PVC BOOT CLAMP AROUND INLET

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BIOSWALE BIOSWALE LYSIMETER SLOPES SLOPES SAMPLE POINT DOWN DOWN

DITCH BOTTOM INLET WITH FILTER

24” REUSE PIPE

8” PERFORATED PIPE

DISCHARGE PIPE CROSSING STREET

TYPICAL PLAN VIEW AT BIOSWALE IN PUBLIC RIGHT OF WAY/NORTH/SOUTH SIDE STREET

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PIPE FOR BACK- BASE MATERIAL FOR WASHING SYSTEM ROAD & PARKING LYSIMETER SAMPLE

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TYPICAL SECTION AT DISCHARGE AND REUSE PIPE/SIDE STREET CROSSING

24” REUSE PIPE FOR WATER CONTAINMENT AS PIPE FILLS B

DISCHARGE PIPE CROSSING STREET

24” SUMP

BOTTOM INLET WITH FILTER

TYPICAL SECTION AT DISCHARGE AND REUSE PIPE/SIDE STREET CONNECTION

TOP OF BANK

BIOFILTRATION SWALE

8” PERFORATED PIPE FOR WATER INFILTRATION

LINER

SUSTAINABILITY THROUGH BIOMIMICRY

Biomimicry (from bios, meaning life, and mimesis, meaning to imitate) is a design discipline, that when intrinsic to stormwater systems, reintroduces natural systems into the built environment. This “green infrastructure” will provide flood control during heavy rain events, when soil saturation has peaked, mimicking natural ecosystems for pollutant removal, such as fertilizers, petroleum products and surface contaminants.

As our freshwater supply becomes increasingly taxed, letting minimally remediated and reusable water run “down the drain, ultimately to Lemon Bay, isn’t a balanced biological system in which plants and animals can thrive. By utilizing nature as the template, scientists, engineers, architects and county staff have innovatively modeled new sustainable technologies for the West Dearborn Street Low Impact Development Pilot Program.

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WEST DEARBORN STREET ·· LOW IMPACT DEVELOPMENT

through Living Architecture

2’0” GRAVEL PAVE EXISTING ROAD PRE FILTER STRIP

WITH 3’3” SHELL

3:1

APPROIXMATE SEASONAL HIGH WATER TABLE

2” LATERAL IRRIGATION PIPE

3” MAIN IRRIGATION PIPE

TYPICAL CROSSECTION BIOFILTRATION SWALE WITH RE-USE PIPE AT SIDE STREETS

BIOSWALE LOCATIONS ON PROJECT MAP

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8” SLOTTED PVC HINGED PIP WITH 12” RISER PIPE POROUS SOCK WITH FILTER FILLED WITH THIX MEDIA BAFFLE

3:1

PLANTING SOIL

SAND BED WITH CARBON SOURCE

PEA GRAVEL MEDIA

GRAVEL MEDIA

8” PERFORATED PIPE

24” REUSE PIPE WITH BOTH ENDS CAPPED

EXISTING SOIL

LINER

These functions include linear bioretention located in the roadside public right of ways. Sources of run-off are diverted into these swales, removing pollutants by filtration, absorption to soil particles and biological uptake by plants and microbes. Contact with soil and roots provide water quality treatments better than conventional methods, with removal of up to 75% of phosphorus and nitrogen, 95% of metals and 90% of organic bacteria and total suspended solids.

The stormwater runoff will be harvested to irrigate the vegetated bioswales and landscaped areas. A portion of the runoff will first be captured and stored in the 24” re-use pipe below the swale, to then overflow into the 8” perforated pipe for infiltration into the surrounding soil. As capacity is exceeded, and soil saturation has peaked, then each block of bioswales will discharge under side streets to fill the entire grid of the Dearborn Street storm-water system. On those periodic, continual rain events, water may eventually make its way Lemon Bay, filtrated in quality that biomimics its pre-development attributes. Sustainability

Lemon Bay

---- -- - ~

pollutants left to remove.

ROOF DRAIN WITH STRAINER

RAIN CHAIN

STAINLESS STEEL CAPTURE VESSEL

SUMP

EPIC CEILING

1” PVC IRRIGATION PIPE

PERIMETER UNDERGROUND

CISTERN

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DISCHARGE PIPE TO BIOSWALE

SECTION THROUGH GREEN ROOF

FREEDOM PARKF

GREEN ROOFS IN THE DEARBORN STREET ECO-DISTRICT

Marrying the built to the natural environ-ment, the Freedom Pavilion is truly rooted in the community. As a component of the Low Impact Design Draft Manual, The Freedom Pavilion is an intensive green roof stormwater treatment system as it is irrigated with a cistern where the roof filtrate will be used for irrigation. While non-irrigated systems are possible, the extremely hot temperatures here coupled with drought conditions will not ensure a vibrant plant population. For a greenroof to function as a stormwater treatment system, this integral part of the treatment train must be vigorous and constant. Vegetation will help reduce total phosphorus, ortho-phosphorus, TKN, and total nitrogen concentrations. Wicking water away from the root zone during heavy and frequent rain events and providing watering during dry periods are essential for vigorous plant growth. The use of the cistern will promote denitrification and greatly reduce the volume of runoff leaving the system, with this greatly reduced flow into the adjacent bioswale left very few

6" OR GREATER GROWTH MEDIA CONT.; MIX W/ LESS THAN 10% ORGANICS

WIND NETTING 0NII 1" OF SURFACE)

INSULATION _ _____ ,.,--

METALDECK -----~-

SCALE : 3/4" = 1'-0"

SEPARATION FABRIC (PERVIOUS NON-WOVEN GEOTEXTILE) TO ALLOW MAX 7% MEDIA TO PASS THRU

EDGE RESTRAINTS FOR MEDIA FASTENED TO ROOF MEMBRANE W/ HURRICANE GLUE OF EQUAL AS RECOMMENDED BY ROOF MEMBRANE MFR.

FIBERTITE WATERPROOFING MEMBRANE

CONCRETE

DETAIL GREEN ROOF

ZURN, OR ARCHITECT APPROVED EQUAL ROOF DRAIN

GRAVEL BETWEEN ROOF DRAIN AND PLANT MEDIUM, MIN.24"

FIBERTITE, OR ARCHITECT APPROVED EQUAL ROOF MEMBRANE

TAPERED INSULATION SLOPED TO ROOF DRAIN

CONC ROOF SLAB, SEE STRUCT. DWGS.

METAL DECK

1/8" THICK SS PLATE, SEE DETAIL 4/C2.00

3/8" SS ALL THREADED ROD

"SHOT GUN SHELL RAIN CHAIN", BY RAINWATER WAREHOUSE

SS DEBRIS SCREEN

SCREEN BASKET

SS RAIN WATER COLLECTION VESSEL

4" DIAMETER PVC PIPE

"VESSEL MFR. TO SUBMIT SHOP DWGS. FOR ARCHITECrs APPROVAL

118" THICK SS PLATE, SEE DETAIL 5/C2.00

REINF. CONC. FOUNDATION, SEE STRUCT PLANS 1/2" EXPANSION JOINT@ PERIMETER OF PIPE

4" DIAMETER PVC PIPE TO CISTERN, SEE CIVIL DWGS.

C2.00

ROOF PEAK ELEV. 21 '-0"

TOP OF PARAPET ELEV. 15'-0"

TOP OF COLUMN ELEV. 12'-0"

FINISH FLOOR ELEV. O'..O"

BTM OF FOOTER ELEV. (-)3'-<l"

SCALE : 1/4" = 1'-0"

(4) 3/8" x 2 3/4" LONG SS POWER STUDS BY RAWLS, TO FOOTER

1/8" THICK SS PLATE

WELD CONNECTION, VESSEL TO PLATE

4" DIAMETER PVC PIPE

DETAIL SS PLATE 5 C2.00

1/8" THICK SS PLATE

(2) 3/8" x 2 3/4" LONG SS POWER STUDS BY RAWLS, TO ROOF SLAB

(2) 318" SS ALL THREADED ROOS, TO VESSEL

DETAIL SS PLATE

FIBERTITE, OR ARCHITECT APPROVED EQUAL ROOF MEMBRANE

PREFAB METAL COPING, CONT.

20 GA GALV. METAL TRACK, CONT. 20 GA GALV. METAL BRACING, ATTACH TO CONCRETE SLAB

TAPERED INSULATION SLOPED TO ROOF DRAIN 3/4" STUCCO OVER FELT BACKED GALV METAL LATH OVER 5/8" DENS GLASS SHEATHING, SAND FLOAT FINISH, TYP 20 GA GAL V. METAL STUDS @ 16"0.C. CONC ROOF SLAB, SEE STRUCT. DWGS.

20 GA GALV. METAL BRACING, ATTACH TO CONCRETE SLAB

METAL DECK

20 GA GALV. METAL TRACK, CONT.

VINYL CORNER BEAD

DETAIL PARAPET

FREEDOM PARK

Providing wildlife habitat- butterflies, bees and other pollinating insects frequent the roof on a continual basis.

· Supporting biodiversity

· Creating habitat for endangered plants that are native to Florida and capable of nutrient uptake through root rizomes

· Integrated pest management – tree frogs and anoles inhabit the roof providing pest control of flies, termites and roaches

· Mitigating Urban heat islands-the roof provides approximately 40 degrees F insulating qualities over non-vegetated roofs. While providing shade, they actually remove heat from the air through evapotranspiration, reducing temperatures of the roof surface and the surrounding air. A conventional rooftop can be up to 90 degrees F warmer.

· Creating a Sense of Place and Landscape Beauty

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Evapotranspiration

Precipitation

DECK TAB CONNECTOR CLIPS STEEL REINFORCING TUBE

POST

DEPRESSION MOLDED CUP

SILVA CELLS K

SILVA CELL SYSTEM BY DEEPROOT I

TREE GRATE

SIDEWALK PAVERS

CONCRETE CURB

ADJACENT ROAD IRRIGATION

BUBBLER 6” COMPACT-ROOT ZONE MIX 4” PERFORATED

DRAINAGE PIPE

STRUCTURAL SOIL AND/OR STREET TREE/PALM PLANTING DETAIL J

SUSTAINABILITY THROUGH TREE CANOPIES

Due to limited planting areas that can accommodate 1000 cf of loam soil, the 30 year lifespan of a typical canopy tree is reduced to 7 years in the urban environment. Coupled with the disruption and financial impact of frequent re-plantings, the environmental benefits of mature trees will never be realized.

Silva Cells can provide a modular, structural framework that supports vehicular pavement above while providing chambers for root growth, soil, stormwater retention and utilities below. The soil within the cells can retain significant amounts of water to filter a wide range of pollutants, the tree growth.

Environmental: air and water filtration, carbon sequestration, storm water retention, reduced energy consumption, wildlife habitat

Economic: reduce infrastructure costs, energy savings, increase real estate values, promote consumer spending, amenity appreciation

Sociological: define and strengthen neighborhoods, reduce crime rates, increase health and well being

BENEFITS OF LIDL

• Preserve open space and minimize land disturbance

• Protect natural systems and processes (drainage ways, vegetation, soils, sensitive areas)

• Re-examine the use and sizing of traditional site infrastructure

• Incorporate natural site elements (wetlands, stream corridors, mature forests) as design elements

• Decentralize and micromanage storm water at its source. Reduce pollutant loading/TMDL compliance

• Protect regional flora and fauna

• Balance growth needs with environmental protection

• Reduce municipal infrastructure and utility maintenance costs (streets, curbs, gutters, sidewalks,

storm sewers, storm water collection vaults, retention/detention ponds.)

• Increase collaborative public/private partnerships

• Research opportunities whenever possible - community and education centers

• Reduce land clearing and grading costs and minimize compaction and impervious surfaces

• Reduce storm water management costs

• Potentially reduce impact fees and increases lot yields

• Increase lot and community marketability

• Preserve integrity of ecological and biological systems

• Protect site and regional water quality by reducing sediment, nutrient and toxic loads to water bodies

• Reduce impacts to local terrestrial and aquatic plants and animals

• Preserve trees and natural vegetation

GREEN INFRASTRUCTURE PRACTICESM

INFILTRATION | EVAPOTRANSPIRATION | CAPTURE AND USE

• Amended soils

• Impervious cover removal

• Bioretention

• Permeable pavements

• Green roofs

• Cisterns and rain barrels

• Trees and expanded tree boxes

• Reforestation and restoration

• Redevelopment

• Infill development

• Alternative parking and street designs

• Water Conservation

LID SOLUTIONS: PERVIOUS PAVEMENT IN LIEU OF CONCRETE AND ASPHALT PAVEMENT N

Pervious pavement (also commonly referred to as permeable pavement and porous pavement) systems

are pavement systems that infiltrate and temporarily store part or all of the water quality volume. Pervious

pavement systems infiltrate and capture rainfall that falls on the surface at rates up to the surface infiltration

rate; these are contrasted to impervious pavements where almost all direct rainfall becomes runoff.

Pervious pavement systems infiltrate water below the surface where water is typically allowed to exfiltrate

into the surrounding parent soil. Under these circumstances, pervious pavement systems function as

retention systems. Pervious pavement systems should be considered as part of a treatment train, with credit

based on available storage volume and the ability of the system to readily recover the storage volume.

Profiles of modular block pervious pavements systems typically include three layers: surface layer, filter layer,

and reservoir layer. Cast-in-place systems can either be incorporated into the three-layer design, a two-layer

design (eliminating the filter layer), or be designed as a single continuous layer of the surface material

directly over the parent soil, without a separate reservoir layer.

In single-layer profile systems, water is stored below the surface, within the material’s pore space, and then

exfiltrates out of the profile. In multi-layer profiles, water is stored in the reservoir layer pore space until it

exfiltrates into the surrounding parent soil. Filter layers often consist of coarse sand or small aggregate,

which helps stabilize modular paver surfaces. In Sarasota County a nutrient-absorption layer is required to

be installed between the parent soil and the pervious pavement system. The intent of this layer is to reduce

pollutant loading to the groundwater.

-Excerpts, Sarasota County Low Impact Design Manual

LOW IMPACT DESIGNO

Low Impact Development (LID) is a stormwater management approach that uses a suite of hydrologic con-

trols (structural and non-structural) distributed throughout the site and integrated as a treatment train (i.e.,

in series) to replicate the natural hydrologic functioning of the predevelopment landscape. Unlike conven-

tional systems, which typically control and treat runoff using a single engineered stormwater pond located

at the “bottom of the hill,” LID systems are designed to promote volume attenuation and treatment at or

near the source of stormwater runoff via distributed retention, detention, infiltration, treatment, and reuse

mechanisms. The fundamental goal of applying LID concepts, design, and practice is to improve the overall

effectiveness and efficiency of stormwater management relative to conventional systems, reducing total

and peak runoff volumes and improving the quality of waters discharged from the site.

A site-specific suite of LID integrated management practices can be applied to most if not all development

scenarios in Sarasota County. Regardless of the project context, LID requires consideration of the following

core site planning and design objectives:

• Preserve or conserve existing site features and assets that facilitate predevelopment hydrologic function.

• Minimize generation of runoff from impervious surfaces (i.e., use peak and total volume controls)

and contamination (i.e., use load controls) as close to the source as possible.

• Promote distributed retention, detention, treatment, and infiltration of runoff.

• Capture and reuse stormwater on site.

• Minimize site disturbance and compaction of soils through low impact clearing, grading,

and construction measures.

A RAINWATER HARVESTING Q