160323 SWM Report

Civil Geotechnical Structural Environmental

Hydrogeology 210 Prescott Street Unit 1 PO Box 189 (613) 860-0923 Kemptville Ontario K0G 1J0 FAX (613) 258-0475

Professional Engineers Authorized by the Association of Professional Engineers

Ontario Of Ontario to offer professional engineering services

SERVICING AND STORMWATER MANAGEMENT REPORT

LIGHT INDUSTRIAL BUILDING 139 JOHN CAVANAUGH DRIVE

OTTAWA ONTARIO

Prepared For

Lor-Issa Construction Inc 3140 Carp Road Ottawa Ontario

K0A 1L0

PROJECT 160323

DISTRIBUTION 6 copies ndash City of Ottawa 1 copy ndash Lor-Issa Construction 1 copy ndash Kollaard Associates Inc

Rev 2 ndash Revised per Second Review Comments June 29 2017 Rev 1 ndash Revised per Review Comments March 14 2017 Rev 0 ndash Issued for Site Plan Approval August18 2016

Servicing and Stormwater Management Report Lor-Issa Construction

139 John Cavanaugh Drive Ottawa ON

June 29 2017 File No 160323

Civil bull Geotechnical bull Structural bull Environmental bull Hydrogeology

1

TABLE OF CONTENTS

LIST OF APPENDICES 2

LIST OF DRAWINGS 2

1 INTRODUCTION 3

2 WATER SERVICE 4

21 Domestic 4

22 Fire Water Storage 5

3 SANITARY SERVICE 6

4 STORMWATER DESIGN 7

41 Stormwater Management Design Criteria 7

411 Minor System Design Criteria 7

412 Major System Design Criteria 7

413 Quality Control Design Criteria 7

42 Stormwater Quantity Control 8

421 Pre-development Site Conditions 8

4211 Pre-development Site Drainage Patterns 8 422 Runoff Coefficients 9

423 Allowable Release Rate 10

424 Post Development Restricted Flow and Storage 10

43 Stormwater Quality Control 11

44 Maintenance 16

5 EROSION AND SEDIMENT CONTROL 18

6 CONCLUSIONS 19



June 29 2017 File No 160323


2

LIST OF APPENDICES Appendix A Storm Design Information

Appendix B Design Criteria

Appendix C Septic Permit

LIST OF DRAWINGS 160323 ndash SER ndash Site Servicing Plan

160323ndash GR ndash Grading Plan

160323ndash ER ndash Sediment amp Erosion Control Plan



June 29 2017 File No 160323


3

1 INTRODUCTION

Kollaard Associates was retained by Lor‐Issa Construction Inc to complete a Stormwater Management Report for a Light Industrial Building in the City of Ottawa Ontario

This report will summarize the stormwater management (SWM) design requirements and proposed works that will address stormwater flows arising from the site under post‐development conditions and will identify any stormwater servicing concerns and also describe any measures to be taken during construction to minimize erosion and sedimentation

The development being proposed by Lor‐Issa Construction Inc is located on the north side of John Cavanaugh Drive

The site has a total area of 1046 hectares and is currently undeveloped The proposed development is to consist of a proposed light industrial building with asphalt parking area in the front and gravel parking area in the rear Vehicular access to the site is from John Cavanaugh Drive by means of an asphalt driveway located along the southeast side of the site



June 29 2017 File No 160323


4

2 WATER SERVICE

21 Domestic The facility is to be serviced by a drilled well constructed on June 20 2016 Information regarding the quality and quantity capabilities of this well can be found in the Hydrogeology Report prepared by Kollaard Associates Hydrogeological Study 139 John Cavanaugh Drive July 11 2016 File Number 160323 This report also contains a copy of the Ministry of Environment Well Record

The water system shall be pressurized with a submersible well pump capable of supplying water at a flow rate of no greater than 35 litresminute (77 igpm) as recommended on the Ministry of Environment Well Record The well shall be fitted with a pitless adapter and protrude from the ground at least 400mm

A seamless 125rdquo polyethylene pipe rated at 150psi shall be installed between the well and the building at a depth of at least 24m

Based on Part 8 of the Ontario Building Code the anticipated design water consumption for the proposed occupancy is up to 3150 litresday as per the septic system design by Fieldstone Engineering Inc



June 29 2017 File No 160323


5

22 Fire Water Storage Fire water storage is required on this site as the proposed building is over 600 square metres in area Total fire storage and requires fire flow was calculated using the Ontario Building Code (2012) Total required fire storage was calculated to be 189529 L as shown below

Formulae

OBC Classification of Building Use Group Division F2 (OBC T-3121)

Assumed Type of Construction

(Most Protective Type)

Building is of limited‐combustible construction Floor assemblies are fire separations but with no fire‐resistance rating Roof assemblies mezzanines Load bearing walls columns and arches do not have a fire‐resistance rating (OBC Appendix A Table 1)

Water Supply Coefficient (Table 1 OBC) K 17 Exposure Distance 1 gt10 m Exposure Distance 2 gt10 m Exposure Distance 3 gt10 m Exposure Distance 4 gt10 m Spatial Coefficient 1 Sside 0 Spatial Coefficient 2 Sside 0 Spatial Coefficient 3 Sside 0 Spatial Coefficient 4 Sside 0 Total Spatial Coefficient Stot 1 Average Building Height H 75 m Building Footprint A 1487 sqm Total Building Volume V 11149 cum Minimum Supply of Water Q 189529 L Required Fire Flow Qf 5400 Lmin per Table 2 on A-3257 of the OBC

90 Ls

Fire water storage is being provided on site in the form of three (3) storage tanks with a capacity of 65000 L providing a total storage volume of 195000 L

TotKVSQ ][01 4321 sidesidesidesideTot SSSSS



June 29 2017 File No 160323


6

3 SANITARY SERVICE

No municipal sanitary services are available at this site The septic system has been design by Fieldstone Engineering Inc The anticipated design water consumption (equivalent to sanitary sewage flow) for the proposed occupancy is 3150 litresday Sanitary sewage will be disposed of by an on‐site sewage system with a level 4 treatment unit The on‐site system will include one (1) septic tank one (1) recirculation tank two (2) Orenco Advantex Model AX20 treatment units and a shallow buried trench disposal field A sewage system permit has been issued by the Ottawa Septic System Office reference permit No 15‐463 Details can be found on DWG No FS‐15‐063‐1 by Fieldstone Engineering Inc



June 29 2017 File No 160323


7

4 STORMWATER DESIGN

41 Stormwater Management Design Criteria Design of the storm sewer system was completed in conformance with the City of Ottawa Design Guidelines (October 2012) and the Ministry of Environment (MOE) Stormwater Management Planning and Design Manual (March 2003)

The City of Ottawa states that ldquoThe roadside ditches were designed assuming that the site will have a post development C‐value of 05 Any runoff above that will have to be storedrdquoRefer to the email from the City of Ottawa provided in Appendix B

411 Minor System Design Criteria

The storm sewers have been designed and sized based on the rational formula and the Manningrsquos Equation under free flow conditions for the 5‐year storm using a 10‐minute inlet time

412 Major System Design Criteria

The major system has been designed to accommodate on‐site detention with sufficient capacity to attenuate the runoff generated onsite during a 100‐year design storm Excess runoff above the 100 year event will flow overland to the ditch in the easement on the northeast side of the property and ultimately into the roadside ditch along John Cavanaugh Drive On site storage is provided and calculated for up to the 100‐year design storm Calculations of the required storage volumes have been provided in Appendix A The depth and extent of surface storage is illustrated on the drawing 160323‐GR

413 Quality Control Design Criteria

The Mississippi Valley Conservation Authority requires that normal level of quality control is met using best management practices as per the Ministry of Environment (MOE) Stormwater Management Planning and Design Manual (March 2003) Normal treatment is defined by the Ministry of Environment Stormwater Management Planning and Design Manual (MOE Stormwater Manual) as long‐term average removal of 70 of suspended solids



June 29 2017 File No 160323


8

42 Stormwater Quantity Control Peak Flow for runoff quantities for the Pre‐Development and Post‐Development stages of the project were calculated using the rational method The rational method is a common and straightforward calculation which assumes that the entire drainage area is subject to uniformly distributed rainfall The formula is

QCiA

360

Where Q is the Peak runoff measured in m3s C is the Runoff Coefficient Dimensionless A is the runoff area in hectares i is the storm intensity measure in mmhr All values for intensity i for this project were derived from IDF curves provided by the City of Ottawa for data collected at the Ottawa International airport For this project two return periods were considered 5 and 100‐year events The formulae for each are 5‐Year Event

81400536

071998

cti

100‐Year Event

8200146

0711735

cti

where tc is time of concentration

421 Pre-development Site Conditions

The site is located north of John Cavanaugh Drive in the City of Ottawa Ontario The site has a total area of about 1046 hectares that is undeveloped All areas will be considered grasslandscaped areas

4211 Pre-development Site Drainage Patterns

Existing stormwater runoff from the entire site in general consists of uncontrolled sheet flow towards the northeast side of the property where it is directed into an existing ditch



June 29 2017 File No 160323


9

422 Runoff Coefficients

Runoff coefficients for impervious surfaces (roofs asphalt and concrete) were taken as 090 whereas pervious surfaces (grass) were taken as 020 A 25 increase for the post development 100‐year runoff coefficients was used PRE-DEVELOPMENT

Description

Runoff Coefficient

Area m2 Area (ha) 5-year 100-year

1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046

Asphalt Parking 0900 1000 000 0000

Gravel 0700 0875 000 0000

Weighted Average C 0200 0250

Used C Value 0200 0375

POST-DEVELOPMENT

Description

Runoff Coefficient


TOTAL DEVELOPED AREA 104600 1046

Total Building Area 14900 0149

Controlled Building Areas 0900 1000 14900 0149

Uncontrolled Building Areas 0900 1000 00 0000

Total Landscape Area (Grass Shrub Tree Pond) 54300 0543

Controlled Landscape Area 0200 025 37500 0375

Uncontrolled Landscape Area 0200 025 16800 0168

Total Asphalt amp Gravel - Parking amp Roadways 35400 0354

Controlled Asphaltpavement 0900 1000 2200 0022

Controlled Gravel 0700 0875 23400 0234

Uncontrolled Asphaltpavement 0900 1000 9800 0098

Uncontrolled Gravel 0700 0875 00 0000

Controlled Area Weighted Avg C 050 060 78000 0780

Uncontrolled Area Weighted Avg C 046 053 26600 0266



June 29 2017 File No 160323


10

423 Allowable Release Rate

With the proposed changes in land use the overall imperviousness of the site will increase thereby increasing the rate of storm runoff To control runoff from the site it will be necessary to limit post‐development flows for all storm return periods up to and including the 100‐year event using onsite inlet controls The City of Ottawa requires that runoff from the site is to be controlled to a post‐development runoff coefficient of 05 and any runoff above that will have to be stored on site The allowable release rates were therefore determined to be 885 Ls and 1510 Ls for the 5‐year and 100‐year storm events respectively as per the design criteria provided by the City of Ottawa Calculations are summarized in Appendix A

424 Post Development Restricted Flow and Storage

In order to meet the stormwater quantity control restriction the post development runoff rate cannot exceed the allowable release rates 1021 Ls and 1744 Ls for the 5‐year and 100‐year storm events respectively Runoff generated on site in excess of the allowable release rate will be temporarily stored in a storage pond and is to be released at a controlled rate following the storm event The flow from the front portion of the site will flow directly to the roadside ditches and will be considered uncontrolled Since flow from a portion of the site is uncontrolled the allowable controlled area release rate is then considered the difference of the allowable release rate and the flow from the uncontrolled portion of the site The uncontrolled area flow for the site was calculated to be 354 Ls and 700 Ls for the 5‐year and 100‐year storm events respectively Refer to Appendix A for Uncontrolled Area Flow Therefore the allowable controlled area release rates are equal to 667 Ls and 1044 Ls 5‐year and 100‐year storm events respectively In order to achieve the allowable controlled area storm water release rate storm water runoff from the site will be controlled by two 200mm diameter outlet culverts in order to control the discharge to the ditch Refer to Appendix A for culvert sizing calculations During a 5 year storm event the storage volume in front of the sand filter will rapidly fill Once this available storage is occupied the sand filter will be overtopped and the release rate from the storage area will be controlled by the outlet culverts Since there is space between the invert of the outlet culverts and the sand filter the sand filter will not significantly affect the head on the outlet culverts



June 29 2017 File No 160323


11

Storage volume required for controlling the 5 and 100 year flows to the allowable controlled area release rates are 282 msup3 and 885 msup3 respectively as per calculations attached in Appendix A These volumes are in addition to the quality storage volume calculated in the next section and will result in ponding elevations of 11881 m and 11893 m for the 5‐year and 100‐year storm events respectively Calculations of the ponding volumes and their respective elevations are provided in Appendix A

It is understood that all runoff originating on the roof of the building will be directed to a grass swale at the west side of the building and ultimately towards the storage pond Runoff from the roof will be collected by eaves troughs and directed through a downspout to the surface

Table 1 ndash SWM Summary

Storm Event

Allowable Release

Rate (Ls)

Uncontrolled Area Release

Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885

43 Stormwater Quality Control Stormwater treatment of 70 TSS removal will be provided for by the use of a sand filter in combination with pre‐treatment utilizing Best Management Practices (BMPrsquos) including the use of grassed lined swales

Quality Control

Quality Control will be provided by providing temporary detention of the entire volume of runoff specified in the MOE Stormwater Manual for quality control in front of a sand filter Discharge of this quality control volume will be through the sand filter only The runoff entering the storage swale in front of the sand filter will be pre‐treated by means of vegetative filtration to prolong the life of the sand filter

The MOE Stormwater Manual in section 467 under the heading Volumetric Sizing provides the following design guidance in order to calculate the quality control volume

Water quality volumes to be used in the design are provided in Table 32 under the ldquoinfiltrationrdquo heading Erosion and quantity control volumes are not applicable to this type of



June 29 2017 File No 160323


12

SWMP The design should be such that at a minimum the by‐pass of flows should not occur below or at the peak runoff from a 4 hour 15 mm design event

The water quality storage volume requirement to achieve a normal level of treatment using filtration was determined from the MOE Stormwater Manual Table 32 The total impervious ratio for the controlled area of the site is (0120+0149 + 0234) 078 = 052 or 52 From Table 32 the storage requirement is 20 m3ha 1046 ha x 20 m3ha gives a total storage requirement of 2092m3

A 4 hour 15 mm design storm was entered into a Visual OTTHYMO 232 model using the controlled area catchment of 078 hectares an impervious ratio of 052 Mannings n of 025 and 0013 for pervious and impervious areas The model produced a total runoff volume of 39 mmm2 or 304 m3

As shown in Appendix A there is a total storage volume for quality control purposes of 309 m3 below the top of the sand filter As such the entire quality control volume will be stored below the top of the sand filter and no by‐pass or overtopping of the filter will occur below or at the peak runoff from a 4 hour 15 mm design event

Release rate through sand filter and Infiltration through bottom of storage swale

The sand filter will be placed in front of the outlet culverts and will have a depth of 015 metres and length and width of 05m x 80m The sand filter will be constructed of a medium grained sand having a percolation rate of T = 2 mincm According to the MOE Stormwater Manual the seepage rate through a sand filter is to be calculated by using Darcys Law and is equal to the projected surface area of the weir x coefficient of permeability x (hydraulic gradient across the filter) Where the hydraulic gradient was calculated as the head across the filter divided by the average length of the flow path through the filter The average flow path length was determined by means of a flow net to be 06 metres as follows

A coefficient of Permeability of 3600 mmh was used in the Darcy Equation to represent the actual coefficient of permeability for the sand in the filter This permeability was derived from



June 29 2017 File No 160323


13

the values given in Table 2 Approximate Relationship of Coarse grained Soil Types to Permeability and Percolation Time in the 2012 Building Code ldquoSupplementary Standards ‐6 Percolation Time and Soil Descriptionsrdquo The percolation rate ldquoTrdquo time of the soil to be used in the filter is 2 minscm This corresponds to a coefficient of permeability of 01 cmsec (or 3600 mmh) This is based on the specified sand material to be used in the sand filter as indicated on Kollaard Associates Inc drawing 1603238 ‐ GR

From the geotechnical report prepared by Field Stone Engineering the underlying soils consist of compact to very‐dense silty sand From Table 2 the coefficient of permeability for this silty sand would be 10 x 10‐5 cmsec

The table quoted above shows the following the fourth column has been added and is different from the quoted table

Soil Type Coefficient of

Permeability K ndash cmsec

Percolation Time

T ndash minscm

Coefficient of Permeability K ndash

msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7

The value provided in the table for a percolation rate (T) of 2 minscm is 01 cmsec or 3600 mmhr

The flow rate through the sand filter would be

Q = A k i

Where A = cross‐sectional area of filter = 01580 = 16 m2

k =coefficient of permeability = 1 x 10‐3 ms

i = hydraulic gradient = 01506 = 025

Q = 3 x 10‐4 m3s = 03 Ls

The flow rate through the bottom of the pond would be

Q = A k i

Where A = surface area of the pond = 255 m2




June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls

With a combined flow rate of 036 Ls the draw down time for a storage volume of 309 m3 would be approximately 239 hours

The flow rate through the Rip‐Rap protecting the sand filter can be calculated using the following Equation

Q = 0327 e 15 S (g D50 T ) 05 p W H 15

Where Q = Flow Rate through Rip‐Rap (m3sec) g = 9806 msec2 D50 = Mean diameter of the rock (m) W = Width of the rock (m) P = Porosity of the rock T = total thickness of the rock (m) H = Hydraulic head (m) S = Slope of Channel ()

Using a total thickness of rock of 20 ndash 07 = 13 and a mean rock diameter of 005 mm the flow rate through the Rip‐Rap at a depth of 01 m = 246 Ls Since this is much greater than the flow rate through the sand filter the Rip‐Rap will not affect the flow rate through the sand filter

This flow rate through the sand filter is not significant compared to the post development release rates indicated above for the 5 year and 100 year storm events Using this design permeability the flow rate through the sand would be insignificant compared to the flow rate through the outlet culverts

Best Management Practices

Section 459 of the MOE Stormwater Management Planning and Design Manual (dated March 2003) discusses the use of grassed swales as a form of lot level and conveyance controls for stormwater management This section promotes the use of shallow low gradient swales as opposed to deep narrow swales Swales are also more effective for water quality purposes if the slope is less than 1 and the velocity less than 05ms These design aspects are incorporated into the detailed design of the development

City of Ottawa Sewer Design Guidelines indicate that all swales with slopes of less than 15 must have a perforated sub‐drain as per City of Ottawa Standard Detail S29 This standard detail is titled Perforated Pipe Installation For Rear Yard and Landscaping Applications This detail specifies a surficial layer with a thickness of 100 mm followed by 300 mm of approved native backfill then by a clear stone drainage layer with a perforated pipe The clear stone



June 29 2017 File No 160323


15

drainage layer has a minimum thickness of 600 mm The perforated pipe has a diameter of 250 mm and is located a minimum of 75 mm from the bottom of the trench This sub‐drain or perforated pipe extends along the bottom of the swale to an outlet In the case where the perforate pipe is used for rear yard drainage and landscaping purposes in an urban setting the outlet for the perforated pipe is typically a storm sewer

The purpose of the minimum swale slope requirement and mitigating detail where the minimum slope cannot be met due to physical limitations of a site is to ensure that there is no long term ponding within the swale Long term ponding negatively affects vegetation and results in stagnant water leading to mosquito habitat and odor

It is considered however that there is no outlet for a sub‐drain at this site due to the limited elevation difference between the bottom of the storage swale and the immediate receiving bodies which are the ditch in the drainage easement along the east side of the site followed by the roadside ditch The bottom of the storage swale elevation is set at 11860 metres and the existing roadside ditch elevation at the outlet location is 11805 metres There is a distance of about 121 metres between the storage swale and the roadside ditch The physical limitations of the site make the installation of a subdrain below the swales unfeasible

In order to reduce the potential for improper drainage of the swales and the for potential surface ponding a clear stone infiltration trench is proposed along the bottom of the swales and storage pond The clear stone trench will have a width of 05 metres and a thickness of 03 metres The clear stone will be surrounded on the sides and bottom with a 4 ounce per square yard non‐woven geotextile fabric As a result of the clear stone trench any potential ponding within the swales will be below the ground surface

Best Management Practices shall be implemented as follows to reduce transport of sediments and promote on site ground water recharge

a) The storage swale has a width of 8 metres and a bottom slope of 032 percent The peak flow rate during a 100 year storm event into the swale is 2323 Ls This peak flow rate would result in a flow velocity of 023 ms and a flow depth of 009 m Since on average the first 008 metres depth of the storage swale are occupied by the quality storage the actual flow depth will be 017 m Since Q=VA the actual velocity would be 015 ms This velocity is well below the velocity at which re‐suspension of settled particles will occur

b) Preservation of existing topographical and natural features The site has been graded to maintain similar drainage patterns to the existing conditions The design has also incorporated areas to remain untouched by the development

c) Discharge roof leaders to yards for natural infiltration evaporation Roof leaders or roof drainage will not be connected to a storm sewer system They will discharge onto



June 29 2017 File No 160323


16

the ground adjacent to the buildings and travel through low gradient grassed swales which will promote infiltration into the ground

d) Servicing via grassed swales and culverts instead of storm sewers The drainage system for the development consists of grassed ditches and culverts (where needed) without the use of storm sewers This will promote surface water infiltration

The contractor shall implement BMPrsquos to provide for protection of the area drainage system as further detailed in Section 5 of this report

44 Maintenance The grassed swales should be inspected on a weekly basis and after any rain fall event after construction until vegetation is well established Any areas of erosion or distress should be repaired immediately Once the vegetation is well established the swales should be visually inspected on a bi‐monthly basis and following significant storm events Any debris should be removed from the swales and the outlet culverts if present The grassed swales should be subjected to the same maintenance schedule as the remainder of the grass covered landscaped lawn surfaces That is the grass should be mowed and cared for as required to maintain a normal healthy appearance Minimum recommended grass height in the swales is 50 mm

Removal of accumulated sediment from the grassed swales should be conducted when the

accumulation of the sediment begins to significantly affect the quality of the grass growth

andor the drainage patterns along the grassed swales The sand filter should be replaced when

the drawdown time increases beyond 20 of the design value

The draw down time for the proposed storage swale is about 24 hours An increase of 20

percent would equate to a draw down time of about 29 hours During a 5 year storm event the

pond is expected to fill to about 021 meters above the bottom During a 100 year storm event

the pond is expected to fill to 033 meters above the bottom It is expected that observations

should be made of the stormwater pond during and after significant rainfall events If the pond

appears to be significantly deeper than expected or it appears that it takes longer than

expected for the water to completely leave the pond the engineer should be notified of the

observations At this point the engineer could make an assessment of the material in the upper



June 29 2017 File No 160323


17

portion of the filter If the assessment indicates that the filter has become compromised with

sediment the filter will require maintenance

The outer layer of the filter material (eg 01 to 015 m) should be removed and replaced with

clear material when accumulated sediment is removed from the filter The protective riprap

may be reused if free of siltsediment

Winter Operation

Since the primary quality control mechanism is storage and sedimentation as opposed to

filtration the proposed system will continue to function even if the filter is frozen It is

considered that freezing of ponded water within the swale and filter may occur during winter

months It is expected that the frozen water within the filter will thaw at a faster rate than the

frozen ponded water adjacent the filter due to the solar energy on the rip‐rap cover over the

filter



June 29 2017 File No 160323


18

5 EROSION AND SEDIMENT CONTROL

The owner (andor contractor) agrees to prepare and implement an erosion and sediment control plan at least equal to the stated minimum requirements and to the satisfaction of the City of Ottawa appropriate to the site conditions prior to undertaking any site alterations (filling grading removal of vegetation etc) and during all phases of site preparation and construction in accordance with the current best management practices for erosion and sediment control It is considered to be the owners andor contractors responsibility to ensure that the erosion control measures are implemented and maintained In order to limit the amount of sediment carried in stormwater runoff from the site during construction it is recommended to install a silt fence along the property as shown in Kollaard Associates Inc Drawing 160323‐ER Grading amp Erosion Control Plan The silt fence may be polypropylene nylon and polyester or ethylene yarn If a standard filter fabric is used it must be backed by a wire fence supported on posts not over 20 m apart Extra strength filter fabric may be used without a wire fence backing if posts are not over 10 m apart Fabric joints should be lapped at least 150 mm (6) and stapled The bottom edge of the filter fabric should be anchored in a 300 mm (1 ft) deep trench to prevent flow under the fence Sections of fence should be cleaned if blocked with sediment and replaced if torn Filter socks should be installed across existing storm manhole and catch basin lids As well filter socks should be installed across the proposed catch basin lids immediately after the catch basins are placed The filter socks should only be removed once the asphaltic concrete is installed and the site is cleaned The proposed landscaping works should be completed as soon as possible The proposed granular and asphaltic concrete surfaced areas should be surfaced as soon as possible The silt fences should only be removed once the site is stabilized and landscaping is completed These measures will reduce the amount of sediment carried from the site during storm events that may occur during construction



June 29 2017 File No 160323


19

6 CONCLUSIONS

This report addresses the stormwater management requirements for the proposed development of the light Industrial building on John Cavanaugh Drive Based on the analysis provided in this report the conclusions are as follows

SWM for the proposed development will be achieved by restricting the runoff to a post‐development runoff coefficient of 05 for the 5‐year and 100‐year storm events respectively Two 200mm diameter outlet pipes are being proposed to control the flow Storage is being provided in a proposed on‐site stormwater management pond

During all construction activities erosion and sedimentation shall be controlled

We trust that this report provides sufficient information for your present purposes If you have any questions concerning this report or if we can be of any further assistance to you on this project please do not hesitate to contact our office Sincerely Kollaard Associates Inc

___________________________________ Steven deWit PEng

June292017



June 29 2017 File No 160323


Appendix A Storm Design Information

Pre-development flows and Allowable Release Rate

Uncontrolled Area Flow

Outlet Control Design Sheet

Stage Storage Curve

Storage Discharge Curve

Required Storage vs Release Rate

Storage Volumes

210 Prescott Street Unit 1 PO Box 189 Kemptville Ontario K0G 1J0

Civil Geotechnical

Hydrogeological Inspection Testing

Septic Systems Grading Structural Environmental

Client Lor‐Issa Construction Inc

Job No 160323

Location 139 John Cavanaugh Drive Ottawa ON

Date

PRE DEVELOPMENT FLOW

Runoff Coefficient Equation

C = (Ahard x 09 + Asoft x 02 )Atot

Pre Dev run‐off Coefficient C

Area (Ha) Surface Ha C Cavg C x 125 C100 avg

Total AsphaltRoof 0000 090 020 100 0251046 Gravel 0000 060 100

GrassField 1046 020 025

C value multiplied by 125 to a max Of 100 for 100 year event

Pre Dev C Intensity Area Pre Dev C Intensity Area

5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755

Use a 25 minute time of concentration Use a 25 minute time of concentration

ALLOWABLE RELEASE RATE


5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744


EquationsFlow EquationQ = 278 x C x I x AWhereC is the runoff coefficientI is the intensity of rainfall City of Ottawa IDFA is the total drainage area

Runoff Coefficient EquationC = (Ahard x 09 + Asoft x 02 )Atot

5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls

PRE DEVELOPMENT FLOWS amp ALLOWABLE RELEASE RATEAPPENDIX A STORMWATER MANAGEMENT MODEL

March 14 2017

5 Year Event

100 Year Event2 amp 5 Year Event


Civil Geotechnical



Client Lor‐Issa Construction Inc Job No 160323Location 139 John Cavanaugh Drive Ottawa ON

Date

Post Dev run-off Coefficient C - UA1

Area Surface Ha C Cavg C x 125 C100 avg

Total Asphalt 0098 090 046 100 0530266 Roof 0000 090 100

Grass 0168 020 025

5 Year EventPost Dev C Intensity Area Post Dev C Intensity Area

5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998

354 LS 700 LSUse a 10 minute time of concentration for 5 year Use a 10 minute time of concentration for 100 year



APPENDIX A STORMWATER MANAGEMENT MODELUNCONTROLLED AREA FLOW

Post Dev Free Flow100 Year Event

March 14 2017

5 Year Event 100 Year Event


Civil Geotechnical




Job No 160323


Date

Dia (m) 0200 HDPE Dia (m) 0200 HDPE

Area (mm) 003142 Area (mm) 003142Pipe Slope 043 Pipe Slope 043

Manning N = 0013 Manning N = 0013Full Flow (m3s) = 0022 Full Flow (m3s) = 0022

Coeff C 060 Coeff C 060Pipe Top (m) 118800 Pipe Top (m) 118900Pipe Cen (m) 118700 Pipe Cen (m) 118800Pipe Inv (m) 118600 Pipe Inv (m) 118700

Layer Thickness (m)

Top Layer Area (msup2)

Bottom Layer Area (msup2)

Flow Depth (m) dD QQf Q (m3s)

Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW

OUTLET CONTROL DESIGN SHEET

March 14 2017

APPENDIX A STORMWATER MANAGEMENT MODEL

Control Pipe 1 Control Pipe 2

Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)

Partially Full Flow (Mannings) Partially Full Flow (Mannings) Orifice Flow

QORIFICE = C A (2 g H)05

where C = Discharge Coefficient QORIFICE = Orifice Flow (m3s) `

A = Orifice Area (m2)

g = Accel due to Gravity (981 ms2) H = Head above centre of orifice (m)


Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)

APPENDIX A STORMWATER MANAGEMENT MODELStage-Storage Curve

Client Lor‐Issa Construction Inc Job No 160323Location 139 John Cavanaugh Drive Ottawa ONDate March 14 2017

100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)

APPENDIX A STORMWATER MANAGEMENT MODELDischarge-Storage Curve

100yr = 872Ls amp 885msup3

Client Lor‐Issa Construction IncJob No 160323Location 139 John Cavanaugh Drive ONDate Mar 14 2017

0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date

Post Dev run-off Coefficient C - CA1

Area (ha) Surface Area (ha) C Cavg C x 125 C100 avg

Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088


TABLE 3 ‐ REQUIRED STORAGE VERSUS RELEASE RATE FOR 5 YEAR STORM

Runoff Coeffcient C = 050 Duration Interval (min) = 5

Drainage Area (ha) = 0780 Release Rate Start (Ls) = 0

Return Period (yrs) = 5 Release Rate Interval (Ls) = 15

Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255

Maximum Storage Rate = 1440 790 554 410 318 234 189 144 99 54





Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017

APPENDIX A STORMWATER MANAGEMENT MODELREQUIRED STORAGE VS RELEASE RATE

Storage Required (m3)




Civil Geotechnical



Client Lor‐Issa Construction Inc Job No 160323Location 139 John Cavanaugh Drive Ottawa ONDate

CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)

Drainage Area = 0780 (hectares)

Release Rate = 520 (Lsec) Release Rate = 890 (Lsec)

Return Period = 5 (years) Return Period = 100 (years)

IDF Parameters A = 998071 B = 0814 IDF Parameters A = 1735688 0820

( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes

1 ) Peak flow is equal to the product of 278 x C x I x A

2) Rainfall Intensity I = A(Tc+C)B

3) Release Rate = Min (Release Rate Peak Flow)

4 ) Storage Rate = Peak Flow ‐ Release Rate

5) Storage = Duration x Storage Rate

6) Maximium Storage = Max Storage Over Duration

7) Parameters abc are for City of Ottawa

APPENDIX A STORMWATER MANAGEMENT MODEL STORAGE VOLUMES FOR THE 5 YEAR AND 100 YEAR STORMS

Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017

Ottawa Sewer Design Guidelines

APPENDIX 5-A OTTAWA INTENSITY DURATION FREQUENCY (IDF) CURVE

City of Ottawa Appendix 5-A1 October 2012



June 29 2017 File No 160323



Email From the City of Ottawa

Email From MVCA

1

Nicole Rajnovich

From Myra Van Die [MVandiemvconca]Sent May-30-16 1012 AMTo nicolekollaardcaSubject RE 139 John Cavanaugh - SWM Design

Follow Up Flag Follow upFlag Status Completed

Hi Nicole The City should be contacted to confirm the stormwater criteria MVCA recommends that quality treatment corresponding to a normal level of protection be provided At a minimum post‐development flows should match pre‐development rates Regards Myra Van Die PEng | Water Resources Engineer Mississippi Valley Conservation Authority

From Craig Cunningham Sent Monday May 30 2016 943 AM To Nicole Rajnovich Cc Myra Van Die Subject RE 139 John Cavanaugh ‐ SWM Design Hi Nicole Please excuse the delay it seems your original request got lost in a jumble of emails Via this reply I am forwarding your request to Myra Van Die our Water Resources Engineer who can outline the SWM design criteria for you Please let either of us know if there are any other information requests that we can assist with Have a nice morning Craig Craig Cunningham | Environmental Planner (Ottawa) | Mississippi Valley Conservation Authority 10970 Highway 7 Carleton Place Ontario K7C 3P1 wwwmvconca |t 613 253 0006 ext 229| f 613 253 0122 | ccunninghammvconca

This e‐mail originates from the Mississippi Valley Conservation Authority e‐mail system Any distribution use or copying of this e‐mail or the information it contains by other than the intended recipient(s) is unauthorized If you are not the

2

intended recipient please notify me at the telephone number shown above or by return e‐mail and delete this communication and any copy immediately Thank you

From Nicole Rajnovich [mailtonicolekollaardca] Sent Monday May 30 2016 811 AM To Craig Cunningham Subject RE 139 John Cavanaugh - SWM Design Hi Craig Have you found any information on this yet Thanks

Nicole Rajnovich

210 Prescott Street Unit 1 PO Box 189 Kemptville Ontario K0G 1J0 CANADA t 6138600923 f 6132580475 wwwkollaardca

From Nicole Rajnovich [mailtonicolekollaardca] Sent May-20-16 226 PM To ccunninghammvconca Subject 139 John Cavanaugh - SWM Design Hi Craig We were retained to prepare a Stormwater Management Report for the proposed light industrial building at 139 John Cavanaugh Drive Could you kind provide us with the Stormwater management design criteria for the proposed development Thank you and best regards

Nicole Rajnovich

210 Prescott Street Unit 1

3

PO Box 189 Kemptville Ontario K0G 1J0 CANADA t 6138600923 f 6132580475 wwwkollaardca

1

Nicole Rajnovich

From Hall Kevin [KevinHallottawaca]Sent May-20-16 135 PMTo Nicole RajnovichSubject RE 139 John Cavanaugh - SWM Design


Nicole The roadside ditches were designed assuming that the site will have a post development C‐value of 05 Any runoff above that will have to be stored Also the site has a drainage easement on two sides I suggest that you contact the conservation authority to find out any quality requirements and the MOECC to confirm whether a ECA is required

Kevin Hall CET Project Manager Infrastructure Approvals Development Review - Rural Services Gestionnaire de projet Approbation des demandes drsquoinfrastructure Examen des demandes drsquoameacutenagement (Services ruraux)

City of Ottawa | Ville dOttawa

6135802424 extposte 27824 ottawacaplanning ottawacaurbanisme

From Nicole Rajnovich [mailtonicolekollaardca] Sent Friday May 20 2016 1147 AM To Hall Kevin Subject 139 John Cavanaugh - SWM Design Hi Kevin We were retained to prepare a Stormwater Management Report for the proposed light industrial building at 139 John Cavanaugh Drive Could you kind provide us with the Stormwater management design criteria for the proposed development Thank you and best regards

Nicole Rajnovich


2


This e-mail originates from the City of Ottawa e-mail system Any distribution use or copying of this e-mail or the information it contains by other than the intended recipient(s) is unauthorized Thank you

Le preacutesent courriel a eacuteteacute expeacutedieacute par le systegraveme de courriels de la Ville dOttawa Toute distribution utilisation ou reproduction du courriel ou des renseignements qui sy trouvent par une personne autre que son destinataire preacutevu est interdite Je vous remercie de votre collaboration



June 29 2017 File No 160323





June 29 2017 File No 160323


1

TABLE OF CONTENTS

LIST OF APPENDICES 2

LIST OF DRAWINGS 2

1 INTRODUCTION 3

2 WATER SERVICE 4

21 Domestic 4

22 Fire Water Storage 5

3 SANITARY SERVICE 6

4 STORMWATER DESIGN 7

41 Stormwater Management Design Criteria 7

411 Minor System Design Criteria 7

412 Major System Design Criteria 7

413 Quality Control Design Criteria 7

42 Stormwater Quantity Control 8

421 Pre-development Site Conditions 8

4211 Pre-development Site Drainage Patterns 8 422 Runoff Coefficients 9

423 Allowable Release Rate 10

424 Post Development Restricted Flow and Storage 10

43 Stormwater Quality Control 11

44 Maintenance 16

5 EROSION AND SEDIMENT CONTROL 18

6 CONCLUSIONS 19



June 29 2017 File No 160323


2









June 29 2017 File No 160323


3

1 INTRODUCTION







June 29 2017 File No 160323


4

2 WATER SERVICE







June 29 2017 File No 160323


5


Formulae






90 Ls





June 29 2017 File No 160323


6

3 SANITARY SERVICE




June 29 2017 File No 160323


7

4 STORMWATER DESIGN











June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


2









June 29 2017 File No 160323


3

1 INTRODUCTION







June 29 2017 File No 160323


4

2 WATER SERVICE







June 29 2017 File No 160323


5


Formulae






90 Ls





June 29 2017 File No 160323


6

3 SANITARY SERVICE




June 29 2017 File No 160323


7

4 STORMWATER DESIGN











June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


3

1 INTRODUCTION







June 29 2017 File No 160323


4

2 WATER SERVICE







June 29 2017 File No 160323


5


Formulae






90 Ls





June 29 2017 File No 160323


6

3 SANITARY SERVICE




June 29 2017 File No 160323


7

4 STORMWATER DESIGN











June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


4

2 WATER SERVICE







June 29 2017 File No 160323


5


Formulae






90 Ls





June 29 2017 File No 160323


6

3 SANITARY SERVICE




June 29 2017 File No 160323


7

4 STORMWATER DESIGN











June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


5


Formulae






90 Ls





June 29 2017 File No 160323


6

3 SANITARY SERVICE




June 29 2017 File No 160323


7

4 STORMWATER DESIGN











June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


6

3 SANITARY SERVICE




June 29 2017 File No 160323


7

4 STORMWATER DESIGN











June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


7

4 STORMWATER DESIGN











June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


8


QCiA

360


81400536

071998

cti

100‐Year Event

8200146

0711735

cti








June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


9



Description

Runoff Coefficient


1046000 1046

Buildings 0900 1000 000 0000

Grass and Shrubs 0200 0250 1046000 1046


Gravel 0700 0875 000 0000



POST-DEVELOPMENT

Description

Runoff Coefficient


















June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


10







June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


11




Storm Event

Allowable Release

Rate (Ls)


Rate (Ls)

Allowable Cont Area

Release Rate (Ls)

Actual

Cont Area Release

Rate (Ls)

Ponding level (m)

Required Storage

(msup3)

Available Storage

(msup3)

5-year 1021 354 667 655 11881 282 1322

100-year 1744 700 1044 872 11893 885


Quality Control






June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


12










June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


13






Percolation Time

T ndash minscm


msec

SW 10‐1 ndash 10‐4 2 ‐ 12 10‐3 ndash 10‐6

SM 10‐3 ndash 10‐5 8 ‐ 20 10‐5 ndash 10‐7



Q = A k i




Q = 3 x 10‐4 m3s = 03 Ls


Q = A k i





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


14

Q = 58 x 10‐5 m3s = 0058 Ls



Q = 0327 e 15 S (g D50 T ) 05 p W H 15









June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


15











June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


16



















June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


17






Winter Operation






filter



June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


18





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323


19

6 CONCLUSIONS






June292017



June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323





June 29 2017 File No 160323






Stage Storage Curve



Storage Volumes


Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323




Civil Geotechnical




Job No 160323


Date










5 Year 020 6090 1046 100 Year 025 10385 1046

278CIA= 3542 278CIA= 7549354 755




5 Year 050 7025 1046 100 Year 050 11995 1046

278CIA= 10214 278CIA= 174401021 1744




5 Year Event

Ls

100 Year Event

LsLs

100 Year Event

Ls


March 14 2017

5 Year Event



Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323




Civil Geotechnical




Date




Grass 0168 020 025


5 Year 046 10419 027 5 Year 053 17856 027278CIA= 3544 278CIA= 6998






March 14 2017



Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323




Civil Geotechnical




Job No 160323


Date





Layer Thickness (m)




Head (m)

Orifice Flow

(m3sec)


Head (m)

Orifice Flow

(m3sec)

11900 0050 6075 5742 295 1322 0400 00528 0300 00457 00985

11895 0050 5742 5433 279 1026 0350 00494 0250 00417 00911

11890 0050 5433 5128 264 747 0300 00457 0200 00373 00831

11885 0050 5128 4856 250 483 0250 00417 0150 00323 00741

11880 0050 4856 4479 233 233 0200 00373 0100 00264 00637

11875 0050 4479 2752 179 309 00 015 075 083 0018 005 025 009 0002 00003

11870 Sand Filter 0050 2752 1326 100 130 00 00003

11865 Sand Filter 0050 1326 100 30 30 00 00003

11860 Bottom of Pond 0000 100 00 00 00 00 000 0000 -010 0000 00000

Orifice FLOW


March 14 2017



Quality Storage

(m3)Stage WSE

Elev (m)

Total Outflow

(m3sec)

Layer Volume

(m3)Comments

Orifice Flow

Quantity Storage

(m3)







Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323




Civil Geotechnical



11860

11865

11870

11875

11880

11885

11890

11895

11900

11905

11910

Elevation (m)



100yr=885msup3 11893m

5yr=282msup3 11881m

11850

11855

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

Storage (m3)

70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323



70

80

90

100

110

120

130

140

arge

(Lsec)




0

10

20

30

40

50

60

0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180

Discha

Storage (m3)



Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323




Civil Geotechnical




Job No 160323


Date



Total Roof 0149 090 050 100 060

Asphalt 0022 090

0780 Gravel 0234 070 088






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 2305 2499 00 00 00 00 00 00 00 00 00 00

5 1412 1531 459 414 369 324 279 234 189 144 99 54

10 1042 1130 678 588 498 408 318 228 138 48 ‐42 ‐132

15 836 906 815 680 545 410 275 140 05 ‐130 ‐265 ‐400

20 703 762 914 734 554 374 194 14 ‐166 ‐346 ‐526 ‐706

25 609 660 990 765 540 315 90 ‐135 ‐360 ‐585 ‐810 ‐1035

30 539 585 1052 782 512 242 ‐28 ‐298 ‐568 ‐838 ‐1108 ‐1378

35 485 526 1105 790 475 160 ‐155 ‐470 ‐785 ‐1100 ‐1415 ‐1730

40 442 479 1150 790 430 70 ‐290 ‐650 ‐1010 ‐1370 ‐1730 ‐2090

45 406 440 1189 784 379 ‐26 ‐431 ‐836 ‐1241 ‐1646 ‐2051 ‐2456

50 377 408 1225 775 325 ‐125 ‐575 ‐1025 ‐1475 ‐1925 ‐2375 ‐2825

55 351 381 1257 762 267 ‐228 ‐723 ‐1218 ‐1713 ‐2208 ‐2703 ‐3198

60 329 357 1286 746 206 ‐334 ‐874 ‐1414 ‐1954 ‐2494 ‐3034 ‐3574

65 310 337 1313 728 143 ‐442 ‐1027 ‐1612 ‐2197 ‐2782 ‐3367 ‐3952

70 294 318 1337 707 77 ‐553 ‐1183 ‐1813 ‐2443 ‐3073 ‐3703 ‐4333

75 279 302 1361 686 11 ‐664 ‐1339 ‐2014 ‐2689 ‐3364 ‐4039 ‐4714

80 266 288 1382 662 ‐58 ‐778 ‐1498 ‐2218 ‐2938 ‐3658 ‐4378 ‐5098

85 254 275 1403 638 ‐127 ‐892 ‐1657 ‐2422 ‐3187 ‐3952 ‐4717 ‐5482

90 243 263 1422 612 ‐198 ‐1008 ‐1818 ‐2628 ‐3438 ‐4248 ‐5058 ‐5868

95 233 253 1440 585 ‐270 ‐1125 ‐1980 ‐2835 ‐3690 ‐4545 ‐5400 ‐6255






Release Rate ‐‐gt 0 15 30 45 60 75 90 105 120 135

Duration

(min)

Rainfall

Intensity

(mmhr)

Peak

Flow

(Lsec)

0 3986 5186 00 00 00 00 00 00 00 00 00 00

5 2427 3158 947 902 857 812 767 722 677 632 587 542

10 1786 2323 1394 1304 1214 1124 1034 944 854 764 674 584

15 1429 1859 1673 1538 1403 1268 1133 998 863 728 593 458

20 1200 1561 1873 1693 1513 1333 1153 973 793 613 433 253

25 1038 1351 2027 1802 1577 1352 1127 902 677 452 227 02

30 919 1195 2151 1881 1611 1341 1071 801 531 261 ‐09 ‐279

35 826 1074 2256 1941 1626 1311 996 681 366 51 ‐264 ‐579

40 751 978 2346 1986 1626 1266 906 546 186 ‐174 ‐534 ‐894

45 691 898 2426 2021 1616 1211 806 401 ‐04 ‐409 ‐814 ‐1219

50 640 832 2496 2046 1596 1146 696 246 ‐204 ‐654 ‐1104 ‐1554

55 596 776 2560 2065 1570 1075 580 85 ‐410 ‐905 ‐1400 ‐1895

60 559 727 2618 2078 1538 998 458 ‐82 ‐622 ‐1162 ‐1702 ‐2242

65 526 685 2671 2086 1501 916 331 ‐254 ‐839 ‐1424 ‐2009 ‐2594

70 498 648 2721 2091 1461 831 201 ‐429 ‐1059 ‐1689 ‐2319 ‐2949

75 473 615 2767 2092 1417 742 67 ‐608 ‐1283 ‐1958 ‐2633 ‐3308

80 450 585 2810 2090 1370 650 ‐70 ‐790 ‐1510 ‐2230 ‐2950 ‐3670

85 430 559 2850 2085 1320 555 ‐210 ‐975 ‐1740 ‐2505 ‐3270 ‐4035

90 411 535 2888 2078 1268 458 ‐352 ‐1162 ‐1972 ‐2782 ‐3592 ‐4402

95 394 513 2924 2069 1214 359 ‐496 ‐1351 ‐2206 ‐3061 ‐3916 ‐4771

100 379 493 2959 2059 1159 259 ‐641 ‐1541 ‐2441 ‐3341 ‐4241 ‐5141


March 14 2017






Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323




Civil Geotechnical




CA 1

050 (5‐yr)

060 (100‐yr Max 095)

5 (mins)





( I = A(Tc+C) C = 6053 ( I = A(Tc+C) C = 6014

0 2305 2499 5200 1979 000 3986 5186 89000 4296 000

5 1412 1531 5200 1011 3032 2427 3158 89000 2268 6803

10 1042 1130 5200 610 3658 1786 2323 89000 1433 8599

15 836 906 5200 386 3473 1429 1859 89000 969 8722

20 703 762 5200 242 2900 1200 1561 89000 671 8047

25 609 660 5200 140 2104 1038 1351 89000 461 6916

30 539 585 5200 65 1164 919 1195 89000 305 5494

35 485 526 5200 06 127 826 1074 89000 184 3872

40 442 479 5200 ‐41 ‐983 751 978 89000 88 2104

45 406 440 5200 ‐80 ‐2147 691 898 89000 08 226

50 377 408 5200 ‐112 ‐3353 640 832 89000 ‐58 ‐1738

55 351 381 5200 ‐139 ‐4593 596 776 89000 ‐114 ‐3771

60 329 357 5200 ‐163 ‐5862 559 727 89000 ‐163 ‐5860

65 310 337 5200 ‐183 ‐7154 526 685 89000 ‐205 ‐7997

70 294 318 5200 ‐202 ‐8465 498 648 89000 ‐242 ‐10173

75 279 302 5200 ‐218 ‐9794 473 615 89000 ‐275 ‐12383

80 266 288 5200 ‐232 ‐11137 450 585 89000 ‐305 ‐14623

85 254 275 5200 ‐245 ‐12493 430 559 89000 ‐331 ‐16889

90 243 263 5200 ‐257 ‐13860 411 535 89000 ‐355 ‐19177

95 233 253 5200 ‐267 ‐15237 394 513 89000 ‐377 ‐21485

100 224 243 5200 ‐277 ‐16624 379 493 89000 ‐397 ‐23812

Max = 3658 8722

Notes









Storage

Rate

(Lsec)

Storage

(m3)

Area No

Time Interval =

Duration

(min)Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

Storage

Rate

(Lsec)

CAVG =

CAVG =

Storage

(m3)

Rainfall

Intensity I

(mmhr)

Peak Flow

(Lsec)

Release

Rate

(Lsec)

March 14 2017






June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323








June 29 2017 File No 160323




Email From MVCA

1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323



1

Nicole Rajnovich






2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323



2



Nicole Rajnovich



Nicole Rajnovich


3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323



3


1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323



1

Nicole Rajnovich








Nicole Rajnovich


2






June 29 2017 File No 160323



2






June 29 2017 File No 160323





June 29 2017 File No 160323



160323 SWM Report

Documents

Transcript of 160323 SWM Report