RD-R157 234 NATIONAL PROGRAM FOR INSPECTION OF NON-FEDERAL DAMS 1/&INTERNATIONAL PRCKING..(U) CORPS OF ENGINEERS WALTHAMNA NEN ENGLAND DIY RPR 79

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MERRIMACK RIVER BASINBRISTOL, NEW HAMPSHIRE

cv)N INTERNATIONAL PACKINGS

in CORPORATIONLOWER DAM

N H -00480

PHASE I INSPECTION REPORT

NATIONAL DAM INSPECTION PROGRAM

DTICDASAU ROLMECTE

cs JUL1 7985 DL DEPARTMENT OF THE ARMY

NEW ENGLAND DIVISION, CORPS OF ENGINEERSWALTHAM, MASS. 02154

DISTRIUUtMON STATEMMH AAPRL 179 Apploved lot pubbo WSO4

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DISCLAIMER NOTICE

THIS DOCUMENT IS BEST QUALITYPRACTICABLE. THE COPY FURNISHEDTO DTIC CONTAINED A SIGNIFICANTNUMBER OF PAGES WHICH DO NOTREPRODUCE LEGIBLY.

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IINfCI AqsTETED* SECURITY CLASSIFVICATION OF THIlS PAGE fthe.n Dais haleged)

REPORT D)OCUMENTATION PAGE BFREDISRCIN

I. REPORT NUMBER - 1. 1yINSCTLGNME

NH 00480 i~15/ 74. TITLE (and Subtlef) S. TYPg OF REPORT a PERIOD COVERED

International Packings corporation Lover Damn INSPECTION REPORT

NATIONAL PROGRAM FOR INSPECTION OF NON-FEDERAL S. PERFORMING ORG. REPORT NUMBEaR

flAMS__ _ _ _ _ _ _ _ _ _ _ _ _

* 7. AUTI4OR(a) 8. CONTRACT OR GRANT NUMSER(e)

U.S. ARMY CORPS OF ENGINEERS* NEW ENGLAND DIVISION

S. PRFORINGORGAIZAION AME ND DDRES10. PROGRAM ELEMENT. PROJEtCT. TASK9. PRFOMINGORGNIZAIONMAMI AN ADDESSAREA & WORK UNIT MNMERS

11. CONTROLLING OFFICE NAME AND ADDRESS 12. R8PORT DATE

*DEPT. OF THE ARMY, CORPS OF ENGINEERS april 1979NEW ENGLAND DIVISION, NEDED 1.NME FP~S

424 TRAPELO ROAD, WALTHAM, MA. 02254 7514. MONITORING AGENCY NAMIE 4 AODRESS(81 diffrt esm CORM01I1ied 011160) IS. SELCURITY CLASS. (ofthi relfport)

UNCLASSIFIEDIts.- PIECAS 1 C ATION/ DOWNGRADING

SCH DULIE

* 1S. DISTRI@UTION STATIEMENT (of this *eor)

APPROVAL FOR PUBLIC RELEASE: DISTRIBUTION UNLIMITED

*17. DISTRIUIUTIOM STATLMIENT (of the "street enteediUn 000111 20. 181110VR kIIeaIM AWNepe

1S. SUPPLEMENTARY NOTES

Cover program reads: Phase I Inspection Report, National Dam Inspection Program;however, the official title of the program is: National Program for Inspection of

* Non-Federal Dams; use cover date for date of report.

* IS~~1. KEY WORDS (Countinu. on eoeueo .$dd U0S eaeoain andd E.'Ib 6F b1061111ee

DAMS, INSPECTION, DAM SAFETY,Merximack River BasinBristol, New HampshireNewfound River

20. ABISTRACT (Canal,... an rowve side it 06aeeaY 801d 040100110 OF bleek 011410100

THe damn is about 14 ft. high and 87 ft. long. The darn is considered to be inpoor condition . Major concerns regarding the safety of the darn include under-seepage, downstream scour, among others. The test flood is ;I the PMF. The an-nual shutdown and major maintenance should be continued with records to bekept of such work.

DD I "iAN7 1473 EDITION OF I 10OV 66 IS OBSOLETE

- -.~.. .. ~ . ...- . .. ..- 7 - S --

DEPARTMENT OF THE ARMYNEW ENGLAND DIVISION. CORPS OF ENGINEERS

424 TRAPELO ROAD i:. :WALTHAM, MASSACHUSETTS 02154

REPLY TO .'%ATTENT ION OF : -

NEDED-E

; .,-..,J.

Mr. Roger L. Young, Plant Engineer 5'-'

International Packings CorporationPleasant StreetBristol, New Hampshire 03222

Dear Mr. Young:

Forwarded herewith for your information and use is a copy of theInspection Report cn the International Packings Corpari:tion Lower Dam.This inspection was made under the authority of Public Law 92-367 by -..

the firm of E.C. Jordan Co., Inc., Portland, Maine under the directionand supervision of the Corps of Engineers. Copies of the finishedreport have been forwarded to the Governor and the Water ResourcesBoard, the cooperating agency for the State of New Hampshire.

" Section 7 of the report contains an evaluation and recommendations. If-you have any questions concerning this report, we suggest that youcontact the Water Resources Board first. Then, if there are furtherquestions contact the Project Management Branch, Engineering Division ..of this office. We thank you for your cooperation and assistance incarrying out this program.

Sincerely yours,

. Incl B. FRYARAs Stat d * Chief, Engineering Division

*ctesion For" TIS GRA&.DTIC TAB -. ' a"-

Just iflbat ±o. U~annourwed Li"'"

By &ODistribution/Availability Codes

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DEPARTMENT OF THE ARMYNEW ENGLAND DIVISION. CORPS OF ENGINEERS

. 0 ET .424 TRAPELO ROAD

WALTHAM. MASSACHUSETTS 02154

i -" REPLY TO

ATTENTION OF:

N'EDED-E

Mr. George M. McGee, Sr.Chairman, New Hampshire Water Resources BoardState of New HampshireConcord, New Hampshire 03301

Dear Mr. McGee:

. Forwarded herewith for your information and use is a copy of the* Inspection Report on International Packings Corporation Lower Dam.

This inspection was performed in accordance with Public Law 92-367under the direction of the Corps of Engineers. Copies of the finishedreport have been forwarded to the Governor and the owner. IUe thankyou for your cooperation and assistance in carrying out this programand hope this report will help you to develop an effective dam safety

" program.

Sincerely yours,

q

Incl B. FRYAR &...0:As stated Chief, Engineering Division

-#0 % 1.- 46- "1

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DEPARTMENT OF THE ARMYNEW ENGLAND DIVISION. CORPS OF ENGINEERS

424 TRAPELO ROAD

WALTHAM. MASSACHUSETTS 02154

REPLY TOATTENTION OF:

rp NEDED

Honorable Hugh J. Gallen'" Governor of the State of New Hampshire

State House* Concord, New Hampshire 03301

Dear Governor Gallen:

I am forwarding to you a copy of the International Packings CorporationLower Dam Phase I Inspection Report, which was prepared under theNational Program fir Inspection of Non-Federal Das. This report ispresented for your use and is based upon a visual inspection, a reviewof the past performance and a brief hydrological study of the dam. A

s- brief assessment is included at the beginning of the report. I haveapproved the report and support the findings and recommendationsdescribed in Section 7 and ask that you keep me informed of the actions

. taken to implement them. This follow-up action is a vitally importantpart of this program.

A copy of this report has been forwarded to the Water Resources Board,the cooperating agency for the State of New Hampshire. In addition, acopy of the report has also been furnished the owner, International

S"Packings Corporation, Pleasant Street, Bristol, New Hampshire 03222,ATTN: Mr. Roger L. Young, Plant Engineer.

MP Copies of this report will be made available to the public, uponrequest, by this office under the Freedom of Information Act. In thecase of this report the release date will be thirty days from the dateof this letter.

I wish to take this opportunity to thank you and the Water ResourcesBoard for your cooperation in carrying out this program.

Sincerely yours,

Incl - JpI P. CA2,DLER. As stated " Cblonel, Corps of Engineers e

-.jv-sion Engin eer

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MERMCrIE AIBRSTL NEW HAPHR

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NATIONAL DAM INSPECTION PROGRAM

PHASE I INSPECTION REPORT

,- NH-00480

INTERNATIONAL PACKINGS CORPORATIONLOWER DAM

BRISTOL

GRAFTON COUNTY, NEW HAMPSHIRE

NEWFOUND RIVER

November 21, 1978

BRIEF ASSESSMENT

The International Packings Corporation Lower Dam is a timber crib

gravity dam with concrete abutment wing walls. The dam is about 14 feetin height and about 87 feet in length between abutments.

Based on the visual inspection and reports of past operationalperformance, the International Packings Corporation Lower Dam isconsidered to be in poor condition. Major concerns regarding thesafety of the dam include underseepage, downstream scour, deteriorationof timbers, serface deterioration and lack of freeboard both at the .reservoir banks and between spillway and service bridge.

The International Packings Corporation Lower Dam is a small sizedam classified as having a significant hazard potential. In

P accordance with Corps of Engineers' guidelines for the deter-"" mination of spillway adequacy, the test flood is cne-half the

Probable Maximum Flood (PMF). The test flood is estimated to be'=. 12,760 cfs. The spillway could pass 44 percent of the one-half ,'

PMF with all stop logs removed. However, the dam is not a hydrauliccontrol once flooding benins to occur, because the upstream valley

-- section allows a routing of flow upstream of the dam around the northend of the dam. Therefore, during the PMF or one-half PMFoccurrence, considerable flooding would be occurring downstream.Thus the spillway is not considered seriously inadequate underCorps of Engineers' Guidelines because a failure caused by over-

a-4

IPC Lc",.'er ap.

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topping would not significantly increase the downstream hazardpotential above that which existed just before failure occurred.Since the dam is a timber crib gravity structure, it can be con-sidered generally stable during overtopping, with the assumption .that underseepage and downstream scour conditions are correctedand deteriorated timber crib members are replaced.

As outlined in Section 7 of this report, the downstream

OL scour and underseepage should be evaluated further by aqualified engineer, and recommendations for curtailment of"these conditions be prepared and implemented. The followingitems of remedial maintenance should also be performed; 1)replacement of missing stoplog lift hooks; 2) repair ofspalled concrete; 3) repair of deteriorated wood members ofthe structure; 4) provision of 24 hour surveillance duringflood events; 5) development of a warning system; and 6) andinstitute a program of annual periodic technical inspections.These actions should be implemented within 12 months of receiptof this report by the owner. The bnnual shutdown and major

- maintenance should be continued with records to be kept ofsuch work.

EDWARD C. JORD C IC.TAAE,.-.

S2,2

.- .-.. f .:. . , - ... ' .,

' Stan, y E. Walker, P.E.

Proj ct Officer

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IPC Lower Dam

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77 77.77*

This Phase I Inspection Report on International Packings Corporation Lower Dam

has been reviewed by the undersigned Review Board members. In ouropinion, the reported findings, conclusions, and recommendations are

consistent with the Recommended Guidelines for Safety Inspection ofDams, and with good engineering judgment and practice, and is herebysubmitted for approval.

-OS H W NEGAN, JR., M R

ngineering Division

- CARNEY H. 'ERZIAN4, MEMBERDesign BranchEngineering Division

JOSEPH A. MCELROY, CHAIRMAN* Chief, NED Materials Testing Lab.

Foundations & Materials BranchEngineering Division

APPROVAL RECOMMEN~DED:

5E MFRYA AlChief, Engineering Division

_...or

* .. * ..-. -

PREFACE

-This report is prepared under guidance contained in the RecommendedGuidelines for Safety Inspection of Dams, for Phase I investiga-tions. Copies of these guidelines may be obtained from the Officeof Chief of Engineers, Washington, D.C. 20314. The purpose of aPhase I investigation is to identify expeditiously those dams

OL which may pose hazards to human life or property. The assessmentof the general condition of the dam is based upon available dataand visual inspections. Detailed investigation, and analysesinvolving topographic mapping, subsurface investigations, testing

, and detailed computational evaluations are beyond the scope of a- Phase I investigation; however, the investigation is intended to

identify any need for such studies.

- In reviewing this report, it should be realized that the reportedcondition of the dam is based on observations of field conditionsat the time of inspection along with data available to the inspec-tion team. In cases where the reservoir was lowered or drainedprior to inspection, such action, while improving the stabilityand safety of the dam, removes the normal load on the structureand may obscure certain conditions which might otherwise be detect-able if inspected under the normal operating environment of thestructure.

* It is important to note that the condition of a dam depends onnumerous and constantly changing internal and external conditions,and is evolutionary in nature. It would be incorrect to assumethat the present condition of the dam will continue to representthe condition of the dam at some point in the future. Only throughcontinued care and inspection can there be any chance that unsafe

£conditions be detected.

Phase I inspections are not intended to provide detailed hydrologicand hydraulic analyses. In accordance with the established guide-lines, the spillway test flood is based on the estimated "ProbableMaximum Flood" for the region (greatest reasonably possible storm

* runoff), or fractions thereof. Because of the magnitude andrarity of such a storm event, a finding that a spillway will notpass the test flood should not be interpreted as necessarilyposing a highly inadequate condition. The test flood provides ameasure of relative spillway capacity and serves as an aide indetermining the need for more detailed hydrologic and hydraulicstudies, considering the size of the dam, its' general condition

..1 and the downstream damage potential.

ivIPC Lower Dam

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TABLE OF CONTENTS

PAGE.

LETTER OF TRANSMITTALBRIEF ASSESSMENT....................................iREVIEW BOARD SIGNATURE SHEET.......................... iiiPREFACE ............................................ vTABLE OF CONTENTS................................... vOVERVIEW PHOTOGRAPH ............................. .... viiLOCATION MAP.................. ..................... viii

SECTION 1I PROJECT INFORMATION

1.1 GENERAL........................... ............ 1-11.2 DESCRIPTION OF PROJECT .......................... 1-11.3 PERTINENT DATA ................................. 1-4

SECTION 2 -ENGINEERING DATA

2.1 DESIGN ........................................ 2-12.2 CONSTRUCTION................................... 2-12.3 OPERATION...................................... 2-1 ~2.4 EVALUATION..................................... 2-1

SECTION 3 -VISUAL INSPECTION

3.1 FINDINGS ................. ...................... 3-13.2 EVALUATION..................................... 3-3

SECTION 4 - OPERATING PROCEDURES

4.1 PROCEDURES ......... ............................ 4-14.2 MAINTENANCE OF DAM.......................... .... 4-1

L.4.3 MAINTENANCE OF OPERATING FACILITIES .............. 4-1*4.4 DESCRIPTION OF ANY WARNING SYSTEM IN EFFECT ....... 4-2

4.5 EVALUATION..................................... 4-2

SECTION 5-HYDRAULIC/HYDROLOGIC

* .5.1 EVALUATION OF FEATURES........................... 5-1

vIPC Lower Dam

. . . . ... . . . . . . .

(..

TABLE OF CONTENTS (Continued)

SECTION 6 - STRUCTURAL STABILITY

6.1 EVALUATION OF STRUCTURAL STABILITY ................ 6--.* ... ' .° ,

SECTION 7 - ASSESSMENT, RECOMMENDATIONS AND REMEDIAL MEASURESIP

7.1 DAM ASSESSMENT .................................... 7-17.2 RECOMMENDATIONS ................................... 7-27.3 REMEDIAL MEASURES ................................. 7-27.4 ALTERNATIVES .................................... 7-3 -"-

APPENDICES

A FIELD INSPECTION NOTES

B ENGINEERING DATA

C PHOTOGRAPHS

D HYDROLOGIC AND HYDRAULIC COMPUTATIONS

E INVENTORY FORMS

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PHASE I INSPECTION REPORT

* ! INTERNATIONAL PACKINGS CORPORATION F

LOWER DAM

SECTION 1

PROJECT INFORMATION

1.1 GENERAL

a. Authority. Public Law 92-367, August 8, 1972, authorizedthe Secretary of the Army, through the Corps of Engineers,to initiate a National Program of Dam Inspection through-out the United States. The New England Division of theCorps of Engineers has been assigned the responsibilityof supervising the inspection of dams within the NewEngland Region. Edward C. Jordan Co., Inc. has beenretained by the New England Division to inspect andreport on selected dams in the States of Maine and NewHampshire. Authorization and notice to proceed wereissued to Edward C. Jordan Co., Inc. under a letter ofDecember 1, 1978 from Max B. Scheider, Colonel, Corps ofEngineers. Contract No. DACW33-79-C-0017 has beenassigned by the Corps of Engineers for this work.

b. Purpose

(1) To perform technical inspection and evaluation ofnon-Federal dams to identify conditions whichthreaten the public safety and thus permit cor-rection in a timely manner by non-Federal interests.

(2) To encourage and prepare the states to initiateeffective dam safety programs for non-Federal dams.

(3) To update, verify and complete the National Inven-- tory of Dams.

,.. 1.2 DESCRIPTION OF PROJECT

a. Location. The International Packings Corporation Lower..Dam is located on the Newfound River in the town ofBristol, New Hampshire. N 430 36.0' W 710-44.9 '.

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• -IPC Lower Dam

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b. Description of Dam and Appurtenances. The InternationalPackings Corporation Lower Dam is a timber crib dam withconcrete abutment-wing walls. The dam is a "run-of-the-U river" dam situated in a broad and relatively flat ,section of the valley of the Newfound River. The rivermakes a sharp bend both above and below the dam site. -. '.

The dam is approximately 14 feet in height, with a "---'.

spillway structure length of about 87 feet. It appears* to be founded on soil.

Appurtenant to the dam is a gated canal with concretesidewalls which diverts water to a power house. Afterpassing through the generator, the water exits throughan underground tail race to a channel which rejoins theNewfound River several hundred feet below the dam.

Plan and profile sketches of the dam and appurtenantfeatures are presented in-Appendix B.

c. Size Classification. The IPC Lower Dam is classified asa small size dam, based on its height (14 feet) andstorage capacity (31 acre-feet).

d. Hazard Classification. In the event of failure of thedam, approximately ten commercial and residential buildingslocated within a distance of 1,500 feet below the damwould be damaged. Flood depths vary with the distancedownstream of the dam. Because of the small volume ofthe reservoir storage and the flatness of the overbankareas, the flood peak would be rapidly attenuated. Thecommercial/ industrial buildings located directly down-stream of the dam on the north bank would suffer thegreatest damage. Also of some concern is a propanestorage tank located about 100 feet below the dam; ifthe tank were dislodged from its concrete cradle duringa flood event, the tank could pose a serious hazard todownstream residents. Flood depths just below the damwould be two to three feet.

General flooding in the reach downstream of the dambegins at a discharge of 2,000 to 2,500 cfs. The flood

.* peak from failure was estimated to be 3,491 cfs whichcorresponds to a stage of 7.2 feet at a distance of 100

;iA feet below the dam. Flood stage is at 4.5 to 5 feet inthis area. Flood peak from failure would diminish toabout 1,700 cfs within 1,500 feet of the dam. This is

-,1 considered to be below the general flood level. How-ever, some minor localized high water may still occur.

1-2IPC Lower Dam

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The duration of the flow from dam failure would be veryU short. It would take approximately 13 minutes for thereservoir to empty. It is estimated that in no reachof the stream would water be above general flood levelfor more than 10 minutes.

All of the above discharges do not consider the flowalready occurring. With stop logs in place as at thetime of inspection, the discharge at the dam with watersurface at top of dam would be about 570 cfs. Giventhis as a base flow at time of failure, downstreamwater levels would be raised about 0.5 feet above thelevel resulting from failure alone.

If the spillway were discharging at maximum capacity, asignificant flood event would already be occurringdownstream and there would not be a significant increase -

in downstream hazard due to failure of the dam by over-V, topping.

Based on the above discussion, the International PackingsCorporation Lower Dam is given a "significant" hazardpotential classification.

e. Ownership.

Current Owner: International Packings CorporationPleasant Street Bristol, New Hamp-shire 03222

Previous Owner Dodge-Davis Manufacturing Co..S orand dates: 1934-1949 .-...

f. Operator. Roger L. Young, Plant EngineerInternational Packings Corp.Tel: 1 -603-744-2281

- t. Purpose of Dam. This dam is used for hydroelectricpower generation to supplement the power requirements ofthe International Packings Corporation manufacturingfacility in Bristol.

h. Design and Construction History. There is very littledesign data pertinent to this dam, and that available is. -limited to information relating to the generating equip-

1-3

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ment. The designer of the structure is not known.According to the current owner, the Dodge-Davis Manufac-turing Co. constructed the dam about 1934. The Inter-

U. national Packings Corporation overhauled the structurein 1973, at which time a concrete apron was added to theupstream face, new timber uprights were installed on thestop log sections, a steel I-beam was installed at thetop of the dam, and the low-level outlet was furnished ..-

with a steel gate. No plans for this remodeling areU available.

i. Normal Operating Procedure. The International PackingsCorporation Lower Dam is used to supply water to a 100-foot long power canal located on the south bank justupstream of the dam. A gate house is located at theupstream end of the canal. The stop log spillway ismaintained at a level sufficient to provide water forpower generation. The invert of the canal is 6.9 feetbelow the top of dam. During low and normal flows, stoplogs are maintained at maximum height. In anticipation

r- of high flows, stop logs are manually removed. Ifmaintenance is required to the spillway section, .the water level is lowered and the low level outletis opened. The low level outlet can only be openedfrom the upstream apron. Stop logs are not removedduring periods of turbine shutdown. When power is beinggenerated, periodic daily checks ere reportedly made ofthe generating equipment and trash screens. The stoplogs are not designed to automatically fail duringovertopping conditions. Once overtopping of the dam

.- occurred, it would be very difficult to remove the stoplogs.

1.3 PERTINENT DATA

a. Drainage Areas. The drainage area above the Inter-national Packings Corporation Lower Dam is 96.1square miles. The basin is primarily forested withslopes varying from moderate to steep. Elevationin the basin ranges from 3,121 feet (MSL) at MountCardigan to about 480 feet at the dam. About 7% ofthe entire drainage area consists of surface waterat Newfound Lake which is located about 1.2 milesupstream of the International Packings CorporationLower Dam. A dam on Newfound Lake regulates thedischarge to the Newfound River. The drainage area

" above the Newfound Lake Dam is 95.0 square miles.Newfound Lake has a capacity of 38,800 acre-feet.

1-4IPC Lower Dam

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b. Discharge at Damsite. Based on data collected duringthe visual inspection and discussion with flew HampshireWater Resources Board personnel and the owner, thefollowing discharges were estimated. All dischargesassume a water level at top of dam.

" (1) Maximum flood at damsite is unknown. The flood ofJuly 1973 was estimated to be 3,500 cfs.

(2) Stop log spillway capacity at time of inspection -

570 cfs (one port full open, top of remaining stoplogs 1 foot below top of dam).

(3) Stop log spillway capacity (all stop logs in-place) - 130 cfs.

(4) Spillway capacity (all stop logs removed) is 5,600cfs.

(5) Total spillway flow at PMF is 11,635 cfs at flood

elevation of 493.6 feet. "

(6) Total spillway flow at 1/2 PMF is 6,592 cfs atflood elevation of 490.0 feet.

(7) Total project discharge at PMF elevation of 493.6feet is 30,000 cfs.

(8) Total project discharge at 1/2 PMF elevation of490.0 feet is 12,780 cfs.

c. Elevation. During the field inspection, no physicalreference of the dam elevation to mean sea level wasreadily available. New Hampshire Water Resources Boardrecords dating to 1939 indicate an elevation at the topof the south abutment of about 489.2 feet. Using thisas an assumed datum, pertinent elevations at the Inter-national Packings Corporation Lower Dam site are asfollows: "

ApproximateItem Elevation Above MSL ".."

- (1) Streambed at centerline of dam 474.8(2) Maximum tailwater Unknown -" -

(3) Invert at entrance to power -

house canal 482.3

1-5IPC Lower Dam

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ApproximateI tern Elevation Above MSL

*(4) Normal pool 487.9 -(5) Full flood control pool 489.2(6) Spillway crest (at lowest point) 481.8

* ~.(7) Design surcharge Unknown(8) Top of dam (at abutment) 489.2

*(9) Test flood elevation (PMF) 493.6(10) 1/2 PMF elevation 490.0

* -d. Reservoir. The lengths of the reservoir at normalpool (top of stop log spillway) and maximum pool

* were estimated using average streambed slopes.

Itern Length (ft.)

Normal Pool 600

Top of Dam 700

e. Storage

Itern Storage

Top of Dam 31 :

Normal Pool 20

f. Reservoir Surface

Itern Surface Area(ac)

Top of Darn 2.8Normal Pool 2.1L

* 1-6IPC Lower Dam

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g• Dam.

(1) Type - The dam is a timber crib gravity dam withconcrete abutment-wing walls.

(2) Length - The length between abutments is approxi-mately 87 feet. The northerly wing-wall extendsfrom the abutment at an angle upstream of about 45-for a distance of about 35 feet; the southerly

*m wing-wall extends upstream about 30 feet where it ,meets the gate to the power house canal.

(3) Height - The top height of the dam from top ofabutment to level of streambed downstream is about • -.14 feet.

(4) Top Width - See Plan and Cross-sections in AppendixB.

(5) Side Slopes - See Plhn and Cross-sections in

Appendix B.

(6) Zoning - None.

(7) Impervious Core - None.

(8) Cutoff - Cutoff is formed by sloped plank apron* icovered with concrete on upstream side of dam, with

a mud seal.

(9) Grout Curtain - None.

h. Diversion and Regulating Tunnel. Not applicable.

i. Spillway.

(1) Type- The spillway of the dam consists of timbercribwork supporting timber columns which containslots for stop logs. The stop log spillway runsthe entire length of the timber crib structure.

* (2) Length - The spillway is approximately 87 feetlong. There are 18 stop log bays at 4.5 feet wideby 5 to 6 feet high.

(3) Crest Elevation - Approximately 481.8 feet (MSL) at 0-the low point, based on assumed datum as discussedabove.

1-7IPC Lower Dam

•~ .. ...--...

(4) Gates - Control gates for the spillway are stop .'.- ologs across its entire length. Stop logs must bemanually removed, as there is no hoisting equipment.A low level outlet gate is provided in the concreteapron on the upstream side of the dam; this Qate isa manually operated bulk-head type door which canbe operated only during low-water conditions.

(5) Upstream Channel - The upstream approach to thespillway has an apparent slope of 16 feet per 1000feet and is clear of debris and sediment. No looserock or trees overhanging the channel. The streammakes a sharp bend as it approaches the dam, andpasses beneath a highway bridge as it nears the dam -site (see photograph 8, Appendix C); this bridgecauses a restriction in the approach channel. Someminor sedimentation is evident in the reservoir.

(6) Downstream Channel -" The channel of the NewfoundRiver below the spillway is steep and rocky, withrelatively flat overbanks containing some small .trees and brush. The overbank is generally low inrelation to the stream channel.

A significant amount of scour has occurred at thetoe of the dam. The scouring ranges from 1 to 4feet deep and extends 20 to 30 feet downstream.

j. Regulatinq Outlets".- .-

• - (1) Inverts: Spillway stop log gates - elevationvaries from 481.8 to 482.8 (MSL). Power house

* canal gates - elevation 482.3 (MSL).

(2) 18 stop log gates at 5 to 6 feet high by 4.5 feet -.-

wide. 3 canal gates at 6.5 feet high. The width- .varies from 4 ft., 3 in. to 5 ft., 5 in. Low level

outlet - 3 ft. square.

(See Plan and Cross-section sketches in Appendix B)

(3) Description - Spillway stop log gates consist ofindividual wood plank stop logs which are manually

d removed or inserted. These stop logs are supportedin slots in timber uprights; there are 18 of thesestop log sections across the length of the spillway.

." • .i,

.- .'- ..

1-8IPC Lower Dam

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The power house canal gates consist of threetimber vertical lift gates operated by hoistingequipment housed at the inlet to the canal.

The low level outlet gate is located in the concreteapron which has been installed over the cribwork onthe upstream side of the dam. This gate is athree-panel metal bulkhead-type door and can onlybe operated when the pond has been drained to alow-water condition.

(4) Control mechanisms -

Spillway stop logs - None.Canal gates - Manually operated hoisting

S-: equipment.Low level outlet none.

1-9

IPC Lower Damn~

IF . W ..-.--4F.. I

• . a ao .-

SECTION 2

ENGINEERING DATA

2.1 DESIGN

- Essentially no design data were available for the Inter-*.. national Packings Corporation Lower Dam. Drawings of proposed

generating equipment for use at the site are on file in theP! company's plant in Bristol, together with miscellaneous data .

pertaining to that equipment (See Appendix B).

2.2 CONSTRUCTION

No engineering data were available regarding construction ofthe dam.

2.3 Operation

". No engineering operational data were disclosed.

2.4 EVALUATION

a. Availability. There are essentially no engineering dataor plans available that would be useful in evaluatingthe integrity of the International Packings Corporation

* Lower Dam.

b. Adequacy. The lack of in-depth engineering data did notallow for a definitive review. Therefore, the adequacyof this dam could not be assessed from the standpoint ofreviewing design and construction data, but is basedprimarily on visual inspection, performance history andengineering judgment.

C. Validity. Not applicable.

2-1

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2-1 IPC Lower Dam

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SECTION 3

1VISUAL INSPECTION

3.1 FINDINGS

a. General. The International Packings Corporation LowerDam is a timber crib dam with concrete abutment-wingrwalls. The dam appears to be founded on soil and islocated in a broad, relatively flat section of thevalley. The Newfound River makes a sharp bend bothabove and below the dam site. The dam is a run of theriver dam with very little impoundment area or storagecapacity.

b. Dam.

(1) Structural -The visual inspection of the damstructure revealed that the various elements ofthe dam are in generally poor condition. SeeAppendix A for detailed inspection findings. Thestructure consists of concrete abutments and wingwalls with a timber cribwork supporting timbercolumns and stop logs which form the spillway. SeeAppendix B for plan, profile and cross-section

3 sketches, and Appendix C for photographs.

The visual inspection of the dam resulted in thefollowing major findings:

(a) The spillway section and downstream apron ofI the dam show evidence of settlement and deflec-

tion downstream. Settlement of the apron ofat least 4 inches has occurred (see overviewphotograph). Downstream deflection of thestop log section of the spillway of 5 to 7inches at its' center is evident. (see Appendix

- C, photograph 2)

(b) Significant scour has occurred downstream ofthe apron below the spillway. (see photograph9) Some undermining of the timber cribs isevident.

()Direct leakage from the upstream face of thedam to the downstream toe is occurring. Thiswas evidenced by eroded depressions and flow

3-1IPC Lower Dam

. . . . . . . . . ...

- . . , .-. .

into the depressions along the upstream faceof the dam (see photograph 4) and flow fromthe toe. Past attempts to prevent this seepageare evident; these attempted repairs have notbeen successful.

(d) Many of the timber members in the cribwork andsome of the planking show signs of deterior-ation. Some timber has rotted seriously, .other pieces are cracked or split and someplanks are broken.

(e) The concrete abutments and wing walls arebadly spalled in many areas. (see photograph3)

(f) Stop logs and stop log supports are in generallygood condition. The lifting hooks on some ofthe stop logs aire broken, inhibiting easyremoval of these stop logs.

(2) Hydraulics - At the time of visual inspection theflow of the river was estimated to be 2 to 5 cfs,all of which was flowing beneath or through the damstructure. It was noted that only about one footof freeboard exists between the top of the stop

.. logs and the bottom of the service bridge beams.It was also noted that very little freeboard existsbetween the top of the stop logs and the top ofretaining walls upstream of the abutmerts on both .4.,the north and south sides of the impoundment; infact, the elevation of the top of the concrete

m abutments is greater than the low points along the 6,reservoir storage area.

Evidence at the dam suggests that the stop logs(which must be removed manually) are not alwaysremoved to add capacity to the spillway. Over-

- topping of stop logs in the spillway apparentlyoccurs frequently.

c. Appurtenant Structures. South of the spillway sectionof the dam is the gate works and canal to the powerhouse. Below the power house is a covered tailrace tothe downstream channel. The gate works and gates werefound to be in fair condition and apparently operable,however the gate house is being used for storage andaccess to the gate hoists is impeded. The canal is in

,.. 3-2 :'3-2. IPC Lower Dam

• .. ° . . . ....... . . . . . . .

'.'* '. : .:.- .... ............. .... ... ,..... ...... ; ,.-.;-./ ....-..-.. .- , . .. ...-. .... . .-.. . .,.-.-.-.."..-.. .,.-. ...-.. ,.-........... ..-. .,:.., .. ,, .'...-' ', .' ,,-.'

generally fair condition; however, considerable spallingof concrete side walls was noted. The bridge over thecanal appears to be in good condition. At the inlet to Vthe canal is a log boom which is attached to the shoreat its' upstream end by a rope. This log could become

"- loose and swing into the spillway causing obstruction orS"damage. The trash rack above the power house was ob-

served to be heavily laden with debris. The tailrace is- in very poor condition. Erosion has occurred in the

floor and beneath support piers and the timber roof hascollapsed in one area. See Appendix A for detailedfindings.

d. Reservoir Area. At the time of inspection, on 11/21/78,the reservoir was nearly empty. Only a very small flowwas being released from the Newfound Lake Dam locatedupstream. The International Packings Corporation reser-voir had been drained by leakage through eroded depres-sions located upstream of'the concrete apron. Threeactive leaks were discovered. There is evidence ofprevious attempts to repair the leaks; these have notsucceeded. (See photograph 4.)

Some sediment has accumulated in the reservoir area;however, the accumulated sediment is not sufficient toimpede flow to the spillway or cause blockage of the . -approach channel. L__

The Route 3A highway bridge located approximately 150*:, .' feet above the dam causes a restriction in the approach ---.- -

S."channel to the dam.

e. Downstream Channel. The channel of the Newfound River L. below the dam is steep and rocky with relatively flat

overbanks containing some small tree and brush growth.The overbank is generally low in relation to the stream

; ,*.. channel.

A significant amount of scour has occurred at the toe* of the dam. The depth of scour ranges from 1 to 4 feet.

The scour has occurred for a distance of 20 to 30 feetdownstream.

3.2 EVALUATION

Based on the visual inspection, the dam appears to be in poorcondition. The timber spillway section of the dam shows ..- ,

,' ,.. .- ',

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IPC Lower Dam

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evidence of deterioration, settlement, and lateral displace-ment. Leakage is occurring through and beneath the spillwaysection of the dam. A very small amount of freeboard existsbetween the top of the stop logs and service bridge and atthe wing walls compared to the top of the stop logs. Asoutlined in Section 7, rehabilitative construction and main-tenance are necessary to assure the long-term safety of thestructure.

3-4-

IPC Lower Dam

-~~~~~. Pp- 7q _

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ii SECTION 4

OPERATING PROCEDURES -.

4.1 PROCEDURES

,- The International Packings Corporation Lower Dam is used tosupply water to the canal located on the south bank justupstream of the dam. A gated power house sits at the end ofthe 100-foot long canal. The stop log spillway is maintainedat a level sufficient to provide water for power generation.The inlet to the canal is 6.9 feet below the top of dam.During low and normal flows, stop logs are maintained atmaximum height. In preparation for high flows, stop logsare reportedly manually removeld. If maintenance of thespillway section is required, water level is lowered and thelow level outlet is opened. The low level outlet can onlybe opened from the upstream apron. There are no othercontrolled outlets for this dam. There is evidence offrequent overflow of the stop log spillway. Stop logs arenot always removed during periods of turbine shutdown. Whenpower is being generated, periodic daily checks are made of

3 the generating equipment and trash screens. There is anoperation log for the generating equipment, located at thepower house; otherwise, there are no records of operationand maintenance of the dam.

4.2 MAINTENANCE OF DAM

Maintenance of the dam is on an as needed basis. Accordingto the plant engineer at International Packings Corporation,the dam is shut down once a year for checking and maintenance.There are no maintenance records available.

4.3 MAINTENANCE OF OPERATING FACILITIES

While the spillway stop logs and stop log supports aregenerally in good condition, some stop log hooks are missing.The inlet gates to the power house canal appear to be oper-

Sable, but the gate house is used for storing material whichpresently impedes use of the hoisting equipment. Aside from

*.,.- the once-a-year maintenance effort and attention to immediateconditions needing repair, it appears that there is no scheduledmaintenance program for the dam.

4-1

IPC Lower Dam .-,

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4.4 DESCRIPTION OF AN1Y WARNING SYSTEM IN EFFECT

There is no automatic warning system or remote monitoringsystem in effect. In cases of impending high runoff, the NewHampshire Water Resources Board (which operates a dam upstream

O , ,at Newfound Lake) contacts the International Packings Corpor-ation.

4.5 EVALUATION Ii

Aside from an annual maintenance program for the InternationalPackings Corporation Lower Dam, there is an apparent lack ofattention to the upkeep of the dam. Spalling of concrete inmany parts of the structure and appurtenances, deterioratedtimber work, and broken stop log hooks are in need of repair. -A more thorough ongoing maintenance program appears warranted.

Attempted repairs of leaks located just upstream of the* -i concrete apron of the dam were'noted during the visual

inspection. These repairs have not been successful.

The lack of a warning system or some form of remote moni-toring of the dam is of concern, in that the dam has verylittle freeboard and is not subject to continued surveil-ance. Personnel who monitor the dam are located several -

* -miles from the structure at the International PackingsCorporation Plant.

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4-2IPC Lower Dam

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SECTION 5

HYDRAULIC/HYDROLOGIC

'- 5.1 EVALUATION OF FEATURES :""

a. General. The International Packings Corporation LowerDam is a run of the river dam constructed for low headIhydroelectric power production. The structure consistsof a stop log spillway above a timber crib dam, concrete -_-

wingwalls, and an inlet to a penstock canal with threeindividual gates. The gates were at various stages ofclosure, none being fully closed, at the time of inspec-tion. The power production features of the dam areoperable. Flow at the dam is highly regulated by New-found Lake Dam which is located about 1.2 miles upstreamof the International Packings Corporation Lower Dam.

• b. Design Data. There are no design data available. -.

c. Experience Data. There are no published hydrologic datafor the Newfound River Basin. However, for the last

three years the New Hampshire Water Resources Board hasmaintained a flow record of the discharges from NewfoundLake. The maximum flow in these records is 1,280 cfs.According to personnel of the New Hampshire Water Re-sources Board, no damage occurred downstream of NewfoundLake during this release.

d. Visual Observations. Water level at the InternationalPackings Corporation Lower Dam is controlled by the stop

*log spillway at high and normal flows. At very lowflows, leakage through the dam may equal or exceedinflow. Gates to the power canal are reportedly left

.. open with inflow to the power house being controlled bythe gate at the power house. The tailrace of the powerhouse, although not affecting dam stability, is consideredto be unsafe and is not protected from trespass. Thereis a low level service gate located in the concrete

' apron of the spillway structure which passes low flowsduring maintenance of the spillway.

• .. e. Test Flood Analysis. The International Packings Corpor-ation Lower Dam is classified as having a significanthazard potential. To determine the adequacy of the

.1 * spillway, the "Probable Maximum Flood" (PMF) was developedand applied to the dam. Discharges at the International

5-11. IPC Lower Dam

- * . ., * * . . . . .. . .... -..-. -.. -.- ...- .- ....'... ..-7V

Packings Corporation Lower Dam are controlled by Newfound0 Lake. The drainage area above the International PackingsCorporation Lower Dam was planimetered fror U.S.G.S.quad sheets (I" = 1 mile) and determined to be 96.1square miles. The drainage area was classified as

* :mountainous. The slope of the longest channel aboveNewfound Lake averages about 140 feet/mile. Elevations

lO range from 3,121 feet at Mount Cardigan to about 580feet at the Newfound Lake Dam. The PMF flow into theNewfound Lake was estimated to be 114,000 cfs, using theCorps of Engineers "Preliminary Guidance for EstimatingProbable Maximum Discharges." The flood flow was routedthrough Newfound Lake using HEC-l. (see Appendix D)The peak outflow from the dam was determined to be28,700 cfs. The one-half PMF was also routed throughNewfound Lake. Peak outflow of the one-half PMF wasdetermined to 12,100 cfs.

The intervening drainage area between Newfound Lake Dam

and International Packings Corporation Lower Dam is 1.1

square miles. The PMF inflow from this part of thetotal drainage area would be 1,320 cfs. The one-halfPMF contribution from the intervening drainage is 660cfs. The International Packings Corporation Upper Dam,located upstream from the dam under current study, doesnot diminish the peak due to surcharge storage. There-fore, the PMF at the International Packings CorporationLower Dam is 30,000 cfs. The one-half PMF inflow is12,760 cfs.

The spillway of the International Packings CorporationLower Dam has a capacity of about 5,600 cfs with allstop logs removed and water surface elevation at top ofdam. The spillway could pass 19 percent of the PMF and44 percent of the one-half PMF. However, the dam is nota hydraulic control once overbank flow occurs upstreamof the dam and reservoir. Flooding just upstream of thereservoir occurs at a discharge of about 2,000 to 2,500 -

cfs. At flows greater than this, water would begin toflow around the dam to the north, completely bypassing "the dam. (see Appendix D)

* A PMF of 30,000 cfs would overtop the dam by about 4.4feet. The one-half PMF would overtop the dam by about "0.8 feet.

During the PMF or one-half PMF occurrence, considerableflooding would already be occurring downstream of the

5-2

IPC Lower Dam

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dam. The spillway is not considered seriously inade-quate according to the guidelines of ETL 1100-2-234because failure caused by overtopping would not signi-ficantly increase the downstream hazard potential abovethat which existed just before failure occurred. Since . -

the dam is a timber crib structure, it can be consideredas being generally stable during overtopping conditionsprovided the current downstream scour and underseepageconditions are remedied.

f. Dam Failure Analysis. The dam failure analysis relied- upon the "rule of thumb" guidance outlined in an attach-

ment to ETL 1100-2-234. The storage barns and businessoffice of the lumber company located on the north bankjust below the dam (see Photograph #9) would incur

* significant damage. The areas surrounding a largepropane tank bolted to a concrete platform about 100 .-

feet below the dam on the. south bank could be flooded.If the bolts or concrete supporting structure were tofail during a flood event, the propane tank could pose aserious hazard. The flood peak from failure at the dam

. was computed to be 3,491 cfs which corresponds to astage of 7.2 feet at a distance of 100 feet below thedam. Because of the small volume of storage in thereservoir, the dam failure peak is rapidly attenuated.At a distance of 1,000 feet below the dam, peak flow isreduced to 2,200 cfs with a stage of 6 to 6.5 feet.Flood stage in this reach is estimated to be about 5feet. At a distance of 1,500 feet below the dam, peakflow would be 1,700 cfs corresponding to a stage ofabout 4 feet. General flooding in the reach concernedbegins at a discharge of 2,000 to 2,500 cfs. Within1,500 feet downstream of the dam, the peak flow fromfailure would drop below flood level and no significant

. .damage would occur downstream of this area.

Based on the rule of thumb guidelines provided by the

Corps of Engineers, it was estimated that it would take- - 13 minutes to empty the reservoir. Just below the dam,

discharge would be above flood level for about 6 to 8minutes. At a distance of 1,000 feet below the dam,general flood level would be exceeded for less than 4minutes.

None of the above discharges consider the flow already-" occurring. Given the condition of the dam at the time

of inspection, the discharge at the dam with watersurface at top of dam was computed to be about 570 cfs.

5-3IPC Lower Dam

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Given this as a base flow at time of failure, downstreamwater levels would be raised about 0.5 feet above thelevel resulting from failure alone. If the dam were tofail while the spillway was discharging at maximumcapacity (5,600), the increase in downstream floodstages would be insignificant. During large floodflows, a high tailwater condition exists at the dam.

. The dam should remain stable during overtopping condi-tions if the underseepage from the upstream apron isproperly repaired and the downstream scour is remedied.It is important that any further scour be prevented andthe current effects of scour be repaired.

t*.

5-4IPC Lower Damn

-. . .. -.-..............................

° ...... .-.

SECTION 6

STRUCTURAL STABILITY -

6.1 EVALUATION OF STRUCTURAL STABILITY

a. Visual Observations. Based on the visual observations,the International Packings Corporation Lower Dam appearsto be in poor structural condition. The timber cribworksection of the dam has settled and deflected downstreamat the center. Substantial underseepage and leakage isoccurring and apparently erosion of some of the foundationsoils has occurred. Undermining of the downstream toeof the cribwork has also occurred. Some of the timber

*- members and planking show evidence of rot and many arecracked, split or broken.

The concrete abutments and wing walls are badly spalled.g' These sections of the dam show no signs of movement,

however.

b. Design and Construction Data. No data concerningoriginal design or construction of this dam were disclosedin this investigation.

c. Operating Records. None available. S

d. Post-Construction Changes. In 1973, the spillwaystructure was overhauled. A concrete apron was installedover the existing crib work on the upstream side of thedam and furnished with a steel door low level outlet

* gate. New timber uprights were provided for the stoplog sections. A steel I-beam and cable were added atthe top of the stop log uprights. At the time of inspec-

• "tion, November 21st, the pond level was below the bottomof the stop log section and the cable was slack, thusproviding little support for these uprights. However,at the time of the November 30th followup inspection,the pond was full and the cable was taut.

The new timber uprights remain in generally good condi-tion. The older timber crib work shows deterioration,with some members showing signs of rot or cracking. Thesurfaces of the older concrete portions of the dam havedeteriorated over time, as evidenced by considerablespalling in some areas; these concrete sections haveapparently received little maintenance in recent years.

6-1IPC Lower Dam

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e. Seismic Stability. The dam is located in Seismic ZoneNo. 2 and in accordance with recommended Phase I guide-

* lines, does not warrant seismic analysis.

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•*. . ., .,

. . .. . . .. . . . . . . . .

SECTION 7

ASSESSMENT, RECOMMENDATIONS, AND REMEDIAL MEASURES

7.1 DAM ASSESSMENT

a. Condition. The visual inspection indicates that theInternational Packings Corporation Lower Dam is in poorcondition. Major concerns relative to the dam's physical -condition are identified as follows:

(1) Seepage under the structure is taking place asevidenced by eroded depressions and inflow alongthe upstream face and by flow from beneath the toe.

(2) There has been considerable scour of the streambedjust below the toe of the dam to a depth of one tofour feet. Some resultant undermining of thetimber crib structure underlying the spillway apronis evident.

(3) The older timber structure of the dam and some ofthe planking show signs of deterioration.Some timber has rotted seriously, while otherpieces are cracked or split and some planks arebroken. -

(4) A pronounced settlement and downstream deflectionof the spillway structure have occurred. .'. '

(5) Deterioration of some of the concrete is evident,particularly at the north abutment of the spillwaywhich is pitted in places to a depth of 12 inchesand at the east wingwall of the canal entrance

; which is very seriously eroded.

(6) There is a lack of freeboard between the top of thespillway stop logs and the service bridge. Also,there is a lack of freeboard on the reservoir banksrelative to the top of the dam.

b. Adequacy of Information. The information availablerelative to this dam is very limited. Consequently,assessment of the condition of the dam must be basedprimarily on the visual inspection, the past operational .,.'.performance of the dam, and engineering judgment. .-

7-1* "IPC Lower Dam

~ -- . * .- . - .

. . . . .,......:....-... ..- . a , . . ..- . -. . - .- ,

c. Urgency. Based on the poor condition of the dam,recommendations and remedial measures outlined belowshould be implemented within 12 months of receipt of rthis report by the owner.

d. Need for Additional Investigation. Additional investi-gation is not considered necessary for the current(Phase I) assessment.

7.2 RECOMMENDATIONS

The existing seepage under the dam and the scour of thechannel downstream of the spillway apron are consideredpotentially serious conditions. The settlement and deflectionof the structure is also serious. It is therefore recom-mended that further evaluation of these conditions be made byqualified engineers, and that recommendations be formulatedand implemented to curtail both underseepage and downstreamscour. It is also recommended-that a qualified engineer

* .evaluate the possibility of modifying the existing spillwayto allow automatic release of stop logs during overtopping pconditions.

7.3 REMEDIAL MEASURES

a. Operating and Maintenance Procedures. The routineannual inspection and maintenance program by Inter-national Packings Corporation personnel should becontinued. This annual inspection should be supple-mented by a more frequent program of maintenance of theoperational features of the dam (gates, stop logs,lifting mechanisms). Records should be kept of all

S maintenance work performed. The following specificmaintenance and operating procedures should also beimplemented:

(1) Replace missing or broken stop log lift hooks.

(2) Repair spalled concrete throughout the structure.

* . (3) Repair rotted or broken timber members and planking.

(4) Provide the log boom located at the penstock canalentrance with a more secure anchorage than the ropetie-line now used.

(5) Provide for 24 hour surveillance of the structureduring flood conditions.

7-2IPC Lower Dam

S.-,.-

(6) Develop a plan for a formal warning system whichcould be used in the event of an emergency.

(7) Provide for annual inspection of the facility byqualified engineers.

7.4 ALTERNATIVES

An alternative to implementing the recommendations andremedial measures outlined above would be the removal of thedam. Such removal should be under the supervision of aqualified engineer, with consideration given to the potentialrelease of accumulated sediments and other potential environ-mental impacts which could result from removing the structure.

Another alternative would be the permanent removal of stoplogs to reduce the dam's potential hazard under low-flowconditions. Removal of the stop logs as an interim measureuntil the above outlined recommendations and remedial measurescan be implemented may also be considered.

i 7.

7-3IPC Lower Dam

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APPENDIX A-

VISUAL INSPECTION CHECKLISTAND

SUPPLEMENTARY INSPECTION NOTES

4p 6

VISUAL INSPECTION CHECKLISTPARTY ORGANIZATION

PROJECT International Packings DATE 11-21-78Corporation Lower Dam

TIME P.M.

WEATHER Snow-Cold

W.S. ELEV. 480+ U.S. 475+ DN.S. :~

PARTY:

1.- Stephen Cole 6.

2. John Devine 7. __________________

3. David Nyman . 8. __________________

4.- Timothy Noonan 9. __________________

5. Daniel Lane 10. __________________

PROJECT FEATURE INSPECTED BY REMARKS

1.- Geotechnical Cole

2.- Hydraulics/Hydrology Devine.

3.- Structural Cole, Devine, Nyman

*4. Civil Nyman

5. Survey Noonan, Lane

6. Photography Devine, Noonan

7.

8.- Review Inspection

9.- November 30, 1978 Walker, Horstmann

"10 Water level in reservoir was within several inches of top of stop logs

in timber spillway. The cable extending from north to south at the

the level of the I-beam and walkway was taut at full pond.

C NOTE: See Supplementary Inspection Notes Following Checklist

A-1

IPC Lower Dam

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INSPECTION CHECKLIST "L

PROJECT International Packings DATE 11-21-78Corporation Lower Dam

PROJECT FEATURE Embankment NAME Cole

*--i DISCIPLINE Geotechnical NAME_ _ _ _ _ _ _

AREA EVALUATED CONDITIONS

DAM EMBANKMENT.

Crest Elevation 488.6+

' Current Pool Elevation 480 +

Maximum Impoundment to Date Overtopped?

Surface Cracks None observed

Pavement Condition Turf - okay

Movement or Settlement of Crest None

*Lateral Movement None

Vertical Alignment Okay but very little freeboard

Horizontal Alignment Okay

. Condition at Abutment and at OkayConcrete Structures

S-Indications of Movement of NoneStructural Items on Slopes

Trespassing on Slopes None

Sloughing or Erosion of Slopes Some erosion downstream of bothor Abutments north and south abutments.

Vegetation Grass, bushes

A-2IPC Lower Dam

.. . .-.--.......

.• . 5°. ***.° * 5"• .* .5. .. , •'5°°° . °o. .. Q* ...- .. " - .-. " .,.--°.-. ... .... .•' °....°- .°- -°. ... °. - . ' . .. • •°L

E AREA EVALUATED CONDITIONS

DAM EMBANKMENT (cont.)

Rock Slope Protection -Riprap Some loss of slope pro-Failures tection from stream banks

below north & south abutments

Unusual Embankment or Downstream NoneSeepage

Piping or Boils None

Foundation Drainage Features None

Toe Drains None

4- Instrumentation System None

IA-

IPC Lower Dam

...........................................

.7v

INSPECTION CHECKLIST .

PROJECT International Packings DATE 11-21-78 FCorporation Lower Dam

PROJECT FEATURE Intake Channel/Structure NAME Cole, Nyman "

DISCIPLINE Geotechnical, Structural H/H NAME DevineU

AREA EVALUATED CONDITION

OUTLET WORKS - INT6KE CHANNEL AND

INTAKE STRUCTURE'

a. Approach Channel

Slope Conditions Concrete and masonry retainingwalls, upstream wall in poorcondition.

Bottom Conditions Some silt, no debris.

Rock Slides or Falls None

Log Boom Attached by rope only on upstreamend.•.;.: ,.

Debris None

*Condition of Concrete Lining No lining

Drains or Weep Holes None

b. Intake Structure

Condition of Concrete Spalled

Stop Logs and Slots None

Debris Screen None

Low level, low flow outlet trap door through cribwork, and powerhouse canal.

A-4IPC Lower Dam .-...

~ ..... ,..-..V S.-,

........................_..; . . -.. - -_, .. ,,..-.,.,- .... ,-.-.-,-. , ... .. ,. .,,-.-,- .. .-... -... %

INSPECTION CHECKLIST

PROJECT International Packings DATE 11-21-78

Corporation Lower Dam

PROJECT FEATURE Control Tower NAME Cole, Nyman

DISCIPLINE Geotechnical, Structural H/H NAME Devine

.I "

AREA EVALUATED CONDITION

OUTLET WORKS -CONTROL TOWER1

a. Masonry and Structural

General Condition Fair

Condition of Joints Okay

Spalling Some spalling, side walls

Visible Reinforcing None

Rusting or Staining of Concrete Minor staining

* ' Any Seepage or Efflorescence None Evident

Joint Alignment Okay

unusual Seepage or Leaks in Gate None

Chamber

Cracks Horizontal cracks in canal walls

Rusting or Corrosion of Steel None

b. Mechanical and Electrical

Air Vents N/A

Float Wells N/A

Gate Hoist Appear operable, gates open, gatehouse full of stored materials '

Elevator N/A

.Outlet to power house. A-5IPC Lower Dam

. . ....... . . . . ...W..,•. ... •..°....... °

,.".°%'." ." o° -a.." . "o ,.... . . ... .'.. °, -','o.%

€.""."-."". ". ",,% %'-.",W -o.-._," ,° -" .'-.

.. ."... .. . . .... . .'.. . . . . . . . . .-. ,. .-.-.- *°- ,.-a- -p- .'-.. .,.'.'- %'.. . *% -,

AREA EVALUATED CONDIT IONS

OUTLET WORKS -CONTROL TOWER (cont.)

Hydraulic System N/A10S

0Service Gates Timber -okay

Emergency Gates N/A

* Lightning Protection System N/A

Emergency Power System N/A

Wiring and Lighting System N/A

A-6* -f

A-6 IPC Lower Damn**%

* -. * - ~~ --- ~-~--.-.- -~~%:

INSPECTION CHECKLIST

PROJECT International Packings DATE 11-21-78Corporation Lower Dam

PROJECT FEATURE Transition & Conduit NAME Cole, Nyman

DISCIPLINE Geotechnical, Structural H/H NAME Devine

AREA EVALUATED CONDITION

OUTLET WORKS - TRANSITION AND CONDUIT1

General Condition of Stone Masonry Fair to poor

Rust or Staining on Stone Masonry Some staining

Spalling Severe spall, roof -

Erosion or Cavitation Floor eroded, undermining ofsupport piers " -'

Cracking Not observed

Alignment of Monoliths N/A

Alignment of Joints N/A

* Numbering of Monoliths N/A ..

Tailrace from power house.

NOTE: Tailrace has timber roof or -concrete over timber. Timberroof collapsed in one area.Timber seriously deteriorated -.throughout.

t A-7IPC Lower Dam

S. . . . . . . . . . ..-.. . .

S . . . . .. . . . . . . . . . . . ..

. . . . . . . . . . . . . . . . . . . . . . . . ... V .-

• °o"°- °

PERIODIC INSPECTION CHECKLIST

PROJECT International Packings DATE 11-21-78Corporation Lower Dam

PROJECT FEATURE Outlet Structure/Channel NAME Cole, Nyman

DISCIPLINE Geotechnical, Structural H/H NAME DevineIII

AREA EVALUATED CONDITION

OUTLET WORKS - OYTLET STRUCTURE ANDOUTLET CHANNEL'

General Condition of Stone Masonry Fair - masonry loose

p Rust or Staining N/A

Spalling N/A

Erosion or Cavitation Erosion of floor

m Visible Reinforcing N/A

Any Seepage or Efflorescence None

Condition at Joints N/A

Drain holes None

-" Channel

Loose Rock or Trees Overhanging Trees both sides of channelChannel .. .

Condition of Discharge Channel Clear, unobstructed -

Tailrace from power house.

A-8IPC Lower Dam :

S ... . .-

INSPECTION CHECKLIST

PROJECT International Packings DATE 11-21-78Corporation Lower Dam

PROJECT FEATURE Sp illway NAME Cole, Nyman-

SDISCIPLINE Geotechnical, Structural H/H NAME Devine

AREA EVALUATED CONDITION

OUTLET WORKS - SPILLWAY WEIR, APPROACH 0,

AND DISCHARGE CHANNELS

a. Approach Channel

General Condition Clear, unobstructed

Loose Rock Overhanging Channel None

*Trees Overhanging Channel None

Floor of Approach Channel Silted, no debris

b. Weir and Training Walls1

General Condition of Concrete Fair, some spall & erosionand Masonry

Rust or Staining Some rust & lime stain

Spalling Severe

Any Visible Reinforcing None

Any Seepage or Efflorescence None

Drain Holes None

c. Discharge Channel *

General Condition Clear, unobstructed

Timber weir, concrete walls.

A-9IPC Lower Dan

AREA EVALUATED CONDITION

OUTLET WORKS - SPILLWAY WEIR, APPROACHAND DISCHARGE CHANNELS (Cont.)

Loose Rock Overhanging Channel None

Trees Overhanging Channel Trees on banks both sides ofchannel

Floor of Channel Severe scour below spillway -

some undermining

Other Obstructions None

NOTE: Timber weir has settled and de-flected downstream at center.Timber in fair condition.

A-10

A-ILwe Dam

"",rr - -. ~i

INSPECTION CHECKLISTPROJECT International Packings DATE 11-21-78

Corporation Lower Dam

PROJECT FEATURE Service Bridge NAME Cole -

DISCIPLINE Structural NAME Nyman

AREA EVALUATED CONDITION

OUTLET WORKS - SERVICE BRIDGE

a. Super Structure

Bearings .Timber -okay

Anchor Bolts Okay

Bridge Seat Okay

Longitudinal Members Okay- timber

Under Side of Deck Okay

Secondary Bracing Okay - timber

Deck Okay - timber -'

* Drainage System N/A p

Railings Good

Expansion Joints N/A

Paint Railing good - none on timber- deck or beams

b. Abutment & Piers

' General Condition of Concrete Fair

Alignment of Abutment Okay

Approach to Bridge Good

Condition of Seat & Backwall Okay

A-1lIPC Lower Dam

%," %-q%"---------..- ..- '' •' .. '- ,' -- -. ' "- -

t :.- -...-. ..

SUPPLEMENTARY INSPECTION NOTES

INTERNATIONAL PACKING COMPANY

LOWER DAM

BRISTOL, NEW HAMPSHIRE

APPENDIX A

The dam consists of concrete abutments and training walls with atimber spillway. Appurtenant to the dam is a gate works to acanal and power house with a tailrace discharging to the downstreamchannel.

p

1. CONCRETE STRUCTURES IN GENERAL

A. Concrete Surfaces In General

The concrete wing walls at the dam were found to be ingenerally poor condition. Substantial spalling anderosion of the concrete has occurred (especially thenorth abutment on the downstream side of spillway). Noreinforcing steel is presently exposed. The sidewallsof the canal to the power house were also found to bespalled in several areas. No reinforcing steel is

* exposed.

B. Structural CrackingNo structural cracks were observed in the concrete

portions of the dam.

C. Movement, Horizontal and Vertical Alignment

No evidence of substantial settlement or horizontalmovement was observed in the concrete portions of thedam.

D. Junctions

The junctions between the concrete and timber sectionsof the dam were found to be generally in good conditionwith no evidence of significant movement. Some leakagewas noted. A junction in the south wing wall at thecorner between the wing wall and the canal section wasfound to be open indicating some movement.

' :0 A-12 :.,A-i 2 IPC Lower Dam

"~~..l.... W . . . . .l... . . ....• -" ! . .. 1 - l... l.....0....I. .. 0 -- ..-°~~. -.. . ...... .. =.. .. .-..- : -.> .,.-, -: .-....-.. ......- -.... ,. . ..-_._ .7- :.- . ... .". -. . .-.. ,

~~~. -,,. .-.. , .- •... . • •........ ..-.. ,. .,. .- .,..-,., - ,. .- ,_. . .. . . , -'-..-, - . -.

". ' ' ' Z " '' m. ' ' ' ' '"#' " " "

.' '

. . ." .. ,

" '

l ' " " " " - " • " " '" "

E. Drains

No foundation or joint drains were observed in the I

concrete portions of the structure.

F. Water Passages

The wing walls of the dam were found to be spalled andPe show some signs of erosion. In particular, the north ,

abutment exhibits severe spalling. The east wing wallof the canal is also deteriorated. Otherwise, no signi-ficant erosion of concrete surfaces is evident.

G. Seepage or Leakage

No significant seepage or leakage was observed throuqhor below the faces of the concrete portions of the dam.

H. Monolith Joints, Construction Joints

rThe joint at the corner between the southerly wing wall

or training wall in the canal was found to be open asmall amount. No other joints were observed to be open.

I. Foundation

The foundation of the concrete structures at thedam is apparently placed on soil, likely glacial till.No evidence of foundation distress or undermining wasnoted.

J. Abutments

The abutments of the dam consist of the concrete trainingwalls at the end of the timber section and are apparently

,- founded on soil, likely glacial till. The abutments ofthe dam show no signs of instability. Some minor seepagewas observed downstream of the northerly abutment, inthe form of an iron spring.

2. EMBANKMENT STRUCTURES

The only embankment structures at the dam are small areas ofbackfill behind the abutments of the dam. The embankmentstructures show no signs of instability or distress. -

A-1 3IPC Lower Dam '..'.*

. .- . , . -, . - . - - - - .v- -P- -. -- .

- .- .-.- .

" A. Settlement

No settlement of the embankment section of the dam wasU. observed.

B . Slope Stability

The embankment sections of the dam are retained byconcrete, stone masonry or timber crib walls. Noevidence of instability was observed.

C. Seepage

An iron spring is located just downstream of the northabutment. The volume of seepage was less than 1 gpm atthe time of inspection. No evidence of erosion orpiping of materials from this spring was noted.

D. Drainage Systems

No drainage systems were observed or are known to existin the dam.

E. Slope Protection

The embankment sections of the dam are retained byconcrete, stone masonry or timber crib walls. No seriouserosion or slope instability was noted.

- 3. TIMBER STRUCTURE IN GENERAL

The spillway section of the dam is constructed of timber* cribwork with timber columns forming stoplog slots.

The timber columns are supported at their top by tie rodswhich run diagonally down to the upstream toe of the dam. Acable extending from the south to the north abutment alsosupports the top of the stop log columns. The tie rods werefound to be corroded but in generally good condition.

A. Condition of Timber

The planking of the dam was found to be in generallyfair condition. Some of the planking showed signs of

- serious deterioration, cracking, rotting and also insome areas the planking was found to be broken due tothe action of ice. The timber columns which support thestoplogs are found to be in generally good conditionwith no serious rot in evidence.

A-1 4IPC Lower Dam

-4 1P* W 0

.-... . ... . . . . . . . .

.. :...-.~~~~~~~~~.... ... :. . . .. . . ..... :;:5........:.. ..... :...-....,:...........

7" 7

B. Movement, Horizontal and Vertical Alignment

The timber section of the dam shows signs of settlementin at least two areas; the downstream sill has settledas much as 4 or more inches. The stoplog section aswell as the cribs appear to have deflected downstream atleast 5 to 7 inches at the midpoint of the dam.

* C. Junctions

The junctions between the timber sections and theconcrete training walls appear to be in generally fairto good condition. Substantial leakage is occurringthrough these junctions. Substantial movement has notoccurred.

D. Seepage or Leakage

" A substantial flow of water was occurina down throughr the timber cribwork of the dam at the time of inspection.

The flow of the stream was estimated to be 2 to 5 cfs,all of which was flowing through and beneath the timbercrib section of the dam. Several holes at the upstreamtoe of the timber crib were observed and water goingdown through these holes was observed to be flowing outof the downstream face of the cribwork. Some under-mining has occurred at the downstream toe of the crib-work which has probably caused the settlement and down- '- ":stream movement of the structure.

4. SPILLWAY STRUCTURES

The spillway structure consists of the timber section of thedam with stoplogs across its entire length.

A. Control Gates and Operating Machinery

The control gates are stoplogs located at the top of thespillway. The stoplogs have to be manually removed.There is no hoisting equipment available. It was notedthat some hooks on the stoplogs have broken, which wouldmake removal of these stoplogs difficult.

B. Unlined Saddle Spillways

It appears that during high flow conditions, the northerlyupstream bank may be overtopped with flow

A-i 5IPC Lower Dam

. . - .. J. * . .~--.... . .. -.-..-.. .. ..--...

going through a parking area and road returning to thestream channel below the dam. No erosion is evident,however. Flow is also likely to occur over the sidewall

S of the canal in the southerly bank and returns to thestream below the dam. Some erosion was noted on thestream bank below the dam on the southerly side.

S"; C. Approach and Outlet Channels

OL The approach and outlet channel to the spillway wasfound to be clear and unobstructed. There is a boom loglocated across the inlet canal to the power house on thesoutherly side of the spillway. It was noted that theupstream end of the boom log was attached to the shoreby a small rope, not by a chain. This log could becomeloose and swing into the spillway section of the dam,causing an obstruction or damage to the spillway.

D. Stilling Basin

The stilling basin downstream of the spillway consistsof a timber deck on top of the cribwork. It was found -

... that the deck was in fair condition and that many planks. were broken and others were rotted. Downstream of this

deck substantial scouring has occurred. Erosion hasoccurred in the streambed and some undermining of thecribwork has apparently occurred. This has apparently Lcontributed to the settlement and deflection of thespillway section of the dam.

" 5. OUTLET WORKS

The only outlet works at the dam, other than the stoplogsection in the spillway, consists of a steel trap doorlocated in the upstream face of the timber spillway deck.These outlet works can only be operated in low water condi-tions to maintain flow downstream through the cribwork for

" "- maintenance to the facility.

The canal and gate works upstream of the power house form anoutlet only if water is allowed to flow through the generatorturbine and out the tailrace. This structure could be usedas an outlet for the dam.

- - A. Intake Structure

" .. The inlet structure at the canal consists of concrete ... ',..wing walls. There is a log boom upstream of the inlet

A-16IPC Lower Dam .' .

-- . -. - - -". .- - -. . ..

~~~~~~- - - -- - -a- ---&t~~js

"" structure. It was observed that the inlet is clear andunobstructed.

U B. Operating and Emergency Control Gates

The control gates at the canal consist of three verticallift gates. The gates and hoisting equipment were foundto be in generally good condition, however, the gate

house is presently used for storage, and operation of- the gates is not presently possible due to the amount of U

material stored in the gate house.

C. Conduit, Sluices and Water Passages

The interior surface of the canal was found to be infair condition. Substantial spalling of the concreteside walls and erosion of the side walls has occurred. .-

The floor of the canal was found to be in good condition.

D. Stilling Basin

Downstream of the power house the tailrace is an enclosed -structure with stone masonry sidewalls and a timber

:. and/or a concrete roof. This tailrace runs at least 150feet downstream to the stream channel. This coveredtailrace was found to be in very poor condition. It has

.ino concrete floor, substantial erosion has occurred inthe bottom, and undermining of the concrete supportpiers and also some of the stone masonry walls is

, evident. The roof of this tailrace was found to be invery poor condition; the timber being seriously rotted,exposed concrete being seriously spalled and in one areathe timber roof was found to have collapsed. It appears

* presently that the tailrace would clog if substantial -flow was allowed to pass through the tailrace from thepower house.

E. Approach and Outlet Channels

The approach channel to the power house canal was foundto be clear and unobstructed, however, the trash rackimmediately upstream of the power house was heavilycovered by leaves, brush and debris The downstreamchannel consists of the tailrace which, as discussedabove, is in very poor condition. The outlet channel ofthe main stream below the tailrace is clear and un-obstructed.

A-17IPC Lower Dam

•. . . . . . . . . . . ..--.---

"- ~~.. ...... '-. .-.. .. .. .. .. ....... .I - I --- ---...-- ... . . .'- " " ' '

6. INSTRUMENTATION

None.

7. RESERVOIR

A. Shore Line. No active or inactive landslide areas wereobserved.

B. Sedimentation. There is a small amount of sedimentaccumulated in the reservoir area; however, it is notsufficient to impede flow to the dam or significantlydecrease reservoir storage. Newfound Lake controls theamount of sediment delivered to the reservoir.

C. Potential Upstream Hazard Area. A real estate office. located on the north bank of the dam would be flooded to

a shallow depth (<I') with water at top of dam becauseof a low area in the reservoir shoreline. However,

* I general flooding would probably be occurring beforewater was at top of dam during flood events.

D. Watershed Runoff Potential. The drainage basin hasremained primarily rural and forested.

8. DOWNSTREAM CHANNEL

The channel downstream of the IPC Lower Dam is not capable of- handling moderate to high flows without considerable overbanks

flow occurring. In the event of failure of the dam, approxi-mately 10 commercial, industrial, and residential buildingswithin 1500 feet of the dam would be flooded to depths of 1to 3 feet.

9. OPERATION AND MAINTENANCE FEATURES

. . A. Operation

Operation of the dam at high head is continued even'- during times of no power production. Maintenance is on

an as-needed basis, with once-a-year shutdown for main-tenance of this facility. No records are kept.

__a B. Maintenance

It was noted that maintenance is apparently done on the

dam on as-needed basis, however, little maintenance has

A-l8IPC Lower Dam

* *- -*-~-o---

~. . * .. .. . . . . . . ..,. .-. • " .. .. -.. . .. .* , *- * '% ,, . ,, .- " . .• .- ,•.

.' {'" '' -'- ; ,' " ' ' • ' • ' ' "

. ...... ' - - '" -"" " -'" "' "* .. . . . . . . . . . . . . .

*been done on the dam recently. The timber sectionshows signs of rot and deterioration, the cable whichsupports the stop log columns is loose, the stop logs

w ~are missing several lifting hooks, and the gate house .-

is cluttered with stored materials.

ILr

A-i19 5

IPC Lower Dam

APPENDIX B

5 ENGINEERING DATA

This appendix lists the engineering data collected eitherfrom project records and other sources of data developedas a result of the visual inspection. The contents of this

* appendix are listed below.

Appendix DescriptionB-1 General Project DataB-2 Past Inspection Reports

r

B-

IPC Loer Da

AV ' ;"W W '

, , - , .. . .. . . . . .. , I.. .. . . . . . . . . . . . . . . . . . .. O ° " -- " . -' O '. .' W -

APPENDIX B-i

5GENERAL PROJECT DATA

* ~ . The following material relative to the International Packings*Corporation Lower Dam is on file at that firm's Bristol, New

Hampshire plant.

A. Drawing No. 30482: One type "Z" vertical shaft turbineunit for Dodge Davis Mfg. Co., 1922.

*B. Miscellaneous information relating to generating equip-.ment.

. II. The following material is available at the office of the ew. Hampshire Water Resources Board, 37 Pleasant Street, Concord,

New Hampshire:

-A. Periodic inspection reports, copies of which are attachedSas Appendix 8-2 of this report.

B. Photographs taken of dam at various times during the.period 1934 to present.

C. Miscellaneous correspondence and survey data.

III. The following plan, profile and cross-sections of the damwere developed from a limited stadia survey performed during

. .visual inspection, field notes taken by inspection teamSmembers, and photographs taken during the visual inspection.

The survey was referenced to an arbitrary local datum.S.Approximate U.S.G.S. elevations were obtained by adding 388.8 '.

to the local reference.

B--.1IPC Lower Dam

C. Miselanou 1 orsonec an suvy aa

:- viua ispcton fiel. noes.tkenby.ispetiontea . ..-.

,2-ti

02a

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4. ow I

Ix,

CL.

m -V- C,

2 4 ___ 77

I" I -

. LOERDA

PLANI AI PROFIL

B- 2 l" NE AMM

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0 0 L0)

cc Z

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Z UL />wA LI~

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NATONA PAGA OF INPCINO NN0DMINENTOA HAKIG

COP-LWR ACRO _T

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CROSS SECTION

Lw i- ;A 1979~q__ _ _ _ _ __ _ _ _ _ __ _ _ _ _ __ _ _ _

* :::-

APPENDIX B-2

PAST INSPECTION REPORTS --- .

Attached are copies of inspection reports pertaining to theInternational Packing Corporation Lower Dam on file withthe New Hampshire Water Resources Board in Concord, NewHampshire.

Opi

r

B-2.1IPC Lower Dam

72~~~- -:0-.

..... .... .. ... ..... . .. . ... . .. ... ... ....... .. .... . . ..... . FIL

.4j ESOURCES -'1

BO A R D ......... ..... ............. ....... . .... .....

3NrqRD. N. H. ... .......... -t .... k..... .. c.................. ... N C........ ..... N......................................................DAT

COMPUTER .. .......... CHECKER ............................ COW c..............O C ........ lm...O ?C .......... D T .Z

II

r5~

4 9?-414Z ~ e:A.".4eZ-2

4 _ _ I r/

I.r

----cmad in9/ 193 and, 19349.i

Note coisoInspectionrnl

9r3, reports found in file for* 0 ~ ~these dates.

* W e, belowdo~ DCN-J.47-3./ *

B-2.4P V,

B2

M E M 0 R A N 0 U M

DATE: march 2, 1973

FROM: Robert B. Charba nIil Ens, beer

SUBJECT: Inspect jofl .eWiound River Darn ' No. .131.07

TO: Vernon A. Knowlton,Chief Engineer, Vater Resources Board

on February,28, 1973, 1 inspected this damnfollowing a telephone complaint by Bill Swain, ofthe Corps of Engineers on February 23 concerning

the bending of this dam.

The dam is a log crib structure of hard-panfoundation. Height of dam is about four feet andhas four foot of flash boards which are held inplate by a number of wooden frames. At some tim~ein the past, the flash board structure was rein-

U forced with a cable which runs through the abut-ments and along the downstream side of the flash-board structure. (See pictures).

Near the abutments there is an obviousbending toward the downstream, while the ce-n-t r ...

*Ssection appears to be straight. No viii Iwas available to the dam itself, due I ~outfoot of water going over two-third.se- t * Spill-way.

RBC:js

wB-2.3

IPC Lowe Dam

QF~

STATE OF NEW HAMPSHIREINTER-DEPARTMENT COMMUNICATION

DATE November 21, 1977

Clom Stephen C. Rurritt, Civil Engineer ATA FFICE)

erResources Board

. UBJECT Dam 31.07 Bristol, N. H.

To File

This dam looks to be in good shape. At the time of inspectionthe dam was passing about 3* to 6". The old wooden beam holding up thestoplogs has been replaced by a steel wide flange beam, and it still hasa bow in it (see photo).

This damn should beinspected in the summer.

414

B-2.4

IXC Lower Dam

...t..... .. .. ... ....

, .. WATER RLESOURCES BOARD37 Pk a sont Shtee-

Concord, N.H. 03301 TLLFP - O C 27-t - ..

"cwter 23, 1978

-10

International Packing Corp.Bristol,

,New Hampshire 03222 -.. -, =,

Dear Sirs:

Under the provisions of RSA Chapter 482, Sections 8 through 15, the NewHampshire Water Resources Board is authorized to inspect all dams in the

State which by reason of their physical condition, height and location maybe a menace to the public safety.

The dam structure (No. 31.03 & 07 located Bristol, New Hampshire-Newfound River was inspected on October 19, 1978

and as a result of this inspection, certain discrepancies were found which

should require corrective measures in order to protect the integrity of thestructure. (See attached sheet.)

.- Your dam has been classified by the Board as a non-menace dam and with thisclassification, the State will not insist that the item(s) noted on the

i attached be corrected, but it is advisable that corrective measures be volun-tarily initiated to protect the integrity of the structure.

Should you make the repairs and/or maintenance items on the attached sheet in

*[ the waters of the State, you will need a permit from the Special Board. Appli-cations can be obtained by writing or calling the Spe Board Office, "--

37 Pleasant Street, Concord, New Hampshire 03301 , lep e no. 271-2147.

Please feel free to call or write if you hay q stions regarding theevaluation of your structure. C

Si.iCLY, 0--

GCM:paf eorg .cGee, Sr.,

Enc. Chair 11.(CC*L. •71

, ....--.-..... .- . - _. - .B........

.-.... . . . .- ... - .< - -. . . . . . ..-..-. .-... * . ...... .. ... ... .:.. . .'.. . .. -. <.... . -. . . .-.. .... . .-. . :.- , - .% *L . , - ' -' "-""-. . . . . . . . . . . . . .- * - "-** * " - -% * .* ,*.~ .l~ d l . . . .I i i l n I I l

Dam No. 31.03 Newfound River inspected on October 19, 1978

Visuzil Discrepancie-s (31.03 Upper Dm

V fl1- Spalled concrete should be repaf±red tt the following locations:

a- The wing walls at the sto section on the right canal,

b- The left abutment near fef*. -ose

tNoWeroue* c- The downstream side o0th powerhouse.

2- The large crack in the d~tream wing wall between the spillway andpowerhouse should be repaired.

* 3- There are a few large trees growing very near the concrete and stoneappurtenances whicti'should be cut and treated to prevent regrowth.The roots of trees-displace stones, crack concrete and increase seepage

* through earthen embankments.

r Dam No. 31.07 Newfound River inspected on October 19, 1978

Visual Discrepancies (31.07 Lower Dam)

1- The right spillway abutment is badly spalled and should be patched orcompletely refaced.

5 2- The left abutment at the head gates is extrem~ely deteriorated and shouldbe reconstructed.4

* 3- There are two trees growing at the downstreakmnd of the left abutment

which should be cut and chemically trea~ to prevent regrowth.

P. S. -Please contact Mr. Mc~ee by teI~pp'n e (271-3406) to arrange forpurchase of cinders.

B-2.6IPC Lower Dam

"Ap.

NE~ HAPSN.E ATE2_ RESOURCES BOARD

INSPECTION REPORT

To,,,n: Dam Number:_________

*0Name of Dam, Stream andlory)..ater Body: 101_ Nrj 1,I

* Mailing Address: -t2 7 -i

4L'axc. Height of Dam: 1'Por 4ea: _IZ4J2 Length of Dam: Z9"7

* FOUNrDATIONJ: g- 4

r OUTLET VOKS /

167 5PLLUAJA-f A~ -r7A. ~ C-'JA %I

* / ~Poff TO sru P.

ES T3 0~A 3AM. V' ;=L. L7~ L_ PO ,j r

,.-'or5 OA~c!$e To 2e-r r4uIJT

ABU.TIMENTS: F A3Y - 7 i 9L )6

______ ~'X10' 5e-p'ruOiP T-A IL frA 4C

Note: Give Sizing, Condition and detailed description for each itcr~r, if applicable.

*~.e OF '--rer -9 -

-2- Dani No. - I. o-

,Length: 8Fr-eboarJ: I .- / 70P t. ea-s /A-

SEEPAGE: Location, estimated quantity, etc. ,I- uJ/ TPLO, . .

%La

Changes Since Construction or Last Inspection:

6 p' . ~c A ot-t:.-.'eru ltl.--."5-A-

S"op I.D1 PPO (21-5 ; r7T12 -CAL 45

TqLf e - ij s.7irx-TEt! 'i f rc72

*+EP d: ' '"r7

':' C> ,,, !:,~ ~ ./H ~ -0 . '. •

:..Overa 11 Condition of Dam: FAIP_ T. 40P - SPALA-EP AOL77-..4C--N-S

Contact With Owner: V S-

Date of Inspection:____t_ _ SuggesReinspection Date

.Class of Dam: /~ M &A~(

Signature 1

- ~Date 6 /7

B-2.8

IPC Lower Dam

o/ . .'. .. . . .. . .

..........................................................

-3- ~~Dan No._______

CMMIENTS:

IwoF

B-2.9

II

-4- Dam~ No._______

SKETCH OF DA-M (Show Plan, Ele- c nis)

pow.

SPAL z~ j~~pg-r

B-2 10-

IPC Loer Da

Ap 4 -4p -Ar.. 0 0 W v -- 0- -W-

APPENDIX C

PHOTOGRAPHS

The following are photographs referenced in this report. SeeSheet B-1.3 for photograph locations and orientations.

C-11

IPC Lower Dam

rS

UPSTREAM FACE OF DAM; INLET CANAL TOi POWERHOUSE IS ATLEFT

2VIEW OFSPILLWAY STRUCTURE FROM NORTH E'4D; 11TE DEFLECTION -

OOF STRUCTURE TOW4ARD DOWNSTREAMw

___ * w w

- S * -. . . . . a.7

3

NORTH ABUTMENT; NOTE SPALLING

OF CONCRETE

wI.

4SEEP ADJACENT TO UPSTREAM1 APRON; COBBLES & RUBBER SHEET

ARE EVIDENJCE OF ATTEMPTED REPAIR

-... f7 .

. . . . . . . . . . . . .. . . . . .A* *. . .

5INLET TO CANAL TO POWERHOUSE; NOTE DETERIORATION OF LEFT

(EAST) WING WALL

6

POWERHOUSE CANAL; NOTE SPALLING OF SIDE WALLS

7TAIL RACE OUTLET; POWERHOUSE IS INBACKGROUND; CANAL & DAM ARE TO RIGHT

OF POWERHOUSE

w w 'w

8BRIDGE IMMEDIATELY UPSTREAM FROM DAM

9DOWNSTREAM VIEW; DEEPER WATER IN FOREGROUND IS RESULTPA.r OF SCOUR IMMEDIATELY BELOW DAM

APPENDIX D

HYDROLOGIC AND HYDRAULIC COMPUTATIONS T

Hydrologic computations pertinent to this investigation are - ~-attached. The following figure shows the Newfound River

L watershed at the International Packings Corporation LowerDam.

D-

IPC Lower Dam '~..~

%

I: 'RA fiA~if ( *(± ' I

LOWER DAM-WATERSHED BOUNDARY eg

m 11

KiS

RUMNEY N.H. QUADRANGL IM A NT NATINLPCE NSCRLOE LOERDA

I DRAINAGE ARAMA

15 MLES NEFOUN RIVR N

.7T 0 0 0 0 0

PROJECT GUMP' 8Y J03 NO.t~Ro; rA C- A2>vt 207?~~

CHK BY DATE

/Owi 0/ j'j x'p" Luwi'r L..ao, 15 atrec/ed' 4v. /."cs4 ~-,co"

Al )( ela &,m A 95.0 oyxn z7 Th w be dd,,ac rek i'tvc- /Ae .zTc..

7#he rwded Pow~ -w111 Aen A adekei 16 4'rc en/riAwAar iroo Mchg /~reJ4.p"s

cir /.i p~~)/,eni,~4 .,eais 9'3e/orolez of A4 P.l IF

!/ PAIA. The focl kha/ ALht - w,11 Le~ c,/ o/s,&k aie 4m i.j t-1 161 so4e

Slope- of /Ae- onr~l c'(,o/~/~ /~ic7 &rairl1. i 4 (flon/ai'noui

PZ %MPF4 jbi be DLed SJ(0 f

S - ~ a~r 3 H~EC-I)* ~ 19)

2.ak ~ i ooo cf.

3. 77mec r

jkp = 2& (/7 ooo) 6

8=S6 fill-~7 ~ _ 73,S see&Zo4 o~vg

IoO,00PMF

so 0-3

PROJ ECT COMP BY JOB NO.

CHK BY DATE

reerea/04clc04 4 7c rI/eal, /I TO e A- /0i e , j,'./.e +42fpr

re6^re\Jtd'eW Or)j~ AleW e- W2/CPur, relees.: - jakr

S5U,-#re elevcodar yy.. le ai~ 9ie ci 44t, s&or)-cr AfavA ne, w i

olperc(41 prceijrr prvce 4;r ro,na'i*~,x--c. Ae ak- level P2 1 6 (-_SR'I:

.ZQt~ou4rl.nt )dC n pcJ -3.5470 ree f.

ph area - a"C, A L/e irJe wfvc;a)4n ILk. is ,ncidedf in 413~ iten 4, -c

* - e~~daaclj a] rv1i/ pond e/evcdou 'of 589.1 -M 8,oo '-

area .0 d full poa elevi 4 cr ~r.-!" op/ e/ev, S88, 4 "A. 5,an ujS&~z

* ... - ~ser /er -c, -a7t) 5,470 i9-F .

Aeeis o. sdoraj, ca .o 0;0,Ut

1,3j2 zoo ae -e et 6. oe lbt/r Ia-el a4f 3

- rect a-4le''/c vOO //' -00 TOC',oncJ'Iyi

mle/r.'a/ &ct cI s(5,*4100 10, a S2,32o 4-F

4010J catmj, aJ 600fi' 91, ZO

-ar-ea- a] e/evd~icn 4Z0 7,350 azs XjZpdsn/*-ii ~~c S&j3($o0cc1353% A20' /Ze>0 -J)o o

'/doj -Zi1,~A 4-F

"'E/evalion5 cUae~d from Al9 W~ale.# 76ou~-es &ard

D-4IPC Lower Dam

* - -q--*<-- .*~ ~* *-- -. * 0- -S . -7

I.Z: . O 0 a - 5 (I ' -4 ' C I C'J-- '. c a ' -l CN 'D0 ul LA

14 1'_ Ln -I n c% 4 0 0D .- 4 t4 cn

L 4

ccJ

C144 0 e0 0 a% 0r -4 0 0 0

-4 -44 N4 N4 C*J.0C ~

00c- fn r C-I -: fl CN _-TT~~~~J -4 C4 0 _ 0 0 0 0v

Q %4 CA4 f-s 01 %D ~4 -4 T GoLA f-s Ln ..1 Cs c CZ

-4 -4 -4

f- U0 f-s C) G% Co cc 00 _T .

.- 4 -4 .- 4 O-

0 C)-n m- CD Cc m- 0 r '1 -4: to

Nn Co -a, '.0 V) -4 14 Co co0 CAf- 0' '4 ' .0 cc Cu.

C1 r C -4 -n %0 -4

f--c CA Ln a 0 co 0 _4 cc - -40 CA 0 -4 -It %0 cc LA Ln co CI>

cn LA fs 0 -4 rC4 '.0 -4

U4 a

C4 c - - C%' CA '.0 cc0Nt %D co -4 en -4 f- 0C-

0n.4 ~' Locsj 0 CA LA .. ~ N 4 -~ 40En

N4 n &n0 cc ' CA L !A f-) 04 0

0C CA 4-4 -4 -4 -4 C1 (n r I -

C ra' 0 n CA cc cc 0 - Z 44 -4 Q. LA

C) k U1 W n % -4 0 n-4 -4 - Gow~~ -4~

* % '. LA cc LA '.0 .-4 0o NN W LA 44'T '0 cc 0 %nL r- C%Q.

IL ,- .-4 ,-4 )

o - cc r-4 -t CA LAD ccLM A(U C

r- 00 LA cc 01 Ln c4 I'-. L'. to C4 n L coC1 -r a)4 to C

< - 0-44 ~ oE~W -4-C00 44O0 f 0 -, 4 t

C) Le CA 4: -4 .- 4 o 44 @ -4 -G0 0 P

-4 -4 -4 -4 Ou zO -4

C)3~ 0 0 0 0 0 0 0 0 0 V-0(3 N0 CA (D A a c 0 - cc Q 0

D-5

% ~~* ~ , ~ ~ * -

%**. 41*-*.*. *. *5 5 .... - -:

de. .. .. *

LUWARU C. JOICUM W., I NC. *

PROJECT COMP BY JOB NO.

CHK BY DATE

I'SJ WCY.W M. VA..

R___

* --------.-- *------r--~ -

PROJECTCOPB JBN.

CHK BY DATE

0 8~~) C/Iarajc - -Ln2C.k/7,ai

klewfrootcI Lake DOW af]Ld Soh ~ f clom, a/ Alew/)Fou'd iake is a/ e/ev'aon 7724g Te d~oa

/5 H " lrTh.e7v are -Jiree d,1,5inrcf spi /Way sec/Ionxs. Weir "RQcnik013S/op lo~y sec/fl'i7 neeasur'nq /27 r 7 ) J4, 0 ~w

Floor elevokon of weir "191"4 4460' 1to 3777 R. Wear ua854t]5,conzcsis of 3 -slop la10j hn Metcz)gjc 27 # ~ f ieC/ Foor eltvca/tov) of w~je.- "AB,5 S~79 .7 F1.3 Q, sandS46r tp-rn,,m of Ac-

da'n "nmoeoez Plowa 606w, e/evaoo Sb*Z Ft (-2-2 :Ft on 6C-65an Merioor). xi i's assuned 4-Jere is ORA dscjrasa. c.j 7WA

reservir wakr1e -Sur4 c& e/a47o *~ 582 F+.

Weir-* ftc~nSISIS of 6 Ld spln Kneasora 12 0t Wic dej L ,2V A~~~k. P/oor- eievohon of U~er C" is96.

E~eq1 5/'.j bd'Charjf. Ekv' J)rob "SeAOT

4,000 0 518.0oz

10,000 0 60Z9-co .,r

694. 2- /9',oo0 6/5.sz 171,000 71,192.5c.Z 23,ooo /'08 15 zZO.O 0ZO00 69,76 3

28,0o0 1,308

59 *57.Z2 3/)0oo ,735-59.- 35,ooa 2,252

*59?4000

* 5912.

- .~3. 2-. 58,00098

*595.2. 67oo /003/0

D-7 .

IPC Lower Dam

............... . ..... p .... .....

....... -.. .7.......................

ALL......*.**... *. . . . . \ ~ * .

PROJECT COMP BY JOB NO.. -',,~' .... , ,'/ ,--7 k ", '"-' "

CHK BY DATE

evm°o, "%-.S..- R

at t . , f' ,Zfi. Eev

0(.-e. s/// 571. 7 "t

Devc/"o;r %rD.s. -rou k Wer--

(c.! L- -L___

58,.7 .0 24, 4 lie 353 5".o 2. 4 3 -(-05S.a .5 .o7 • 5.5 61 i '"'

,--6.0 444,q. 6.0 t, ,--'..

84.a 6,.5 523 4,. r 7651.0 .85 7.0 '77

- 587. . i'5 448 7.5 q72-.-.o 7)4 S.o 1,071.

S88. z .5 782- 9.C i,'..

9.o .5. 85 .0 9,z.5 5z 9.5 324- 75 )130 --

/0. 1f8 10.0 1,4.97

,5"90._, /o,5" ~/,o74 10.5 1,,- .

*I s~/ 1.1,.5,31 1...-2, 131. 12.0 '1,-9'4-

,5 2.2. /2.5 1)325 6 .5 Z,oqz.-: PAm S?2.4 12.7 ,*ZB )2-7 2,-3

5 693.2 i5.5r 1,54,, 1.5 2;346

174 2 4q.5 ,74-3 t4,5 2,(,,4 .

- , g,.. 2,115 j s, 3,7--

972. 7 Z,310 )7,5 3,4.'6002. ?q29 •

5t5. /8' ,"I 185t'a 7.6 ,718 19.5 ,o7(it60,Z oa Z0,5- Z,,9291 Zo.T Iqi ":

6012 &S. 30i44 21. 56o2.2 22.5 oss , "

4o3.Z 2.5,55 3.6 5,3,3o4 z. 24. S ,z7 24. C, 7"1..... :-,.... ...-. - * .-..-.-. -

II '. " • .... • '--'I . "II' 'II " 0- '" .... I--" -"I ... ... .:' ..... U............. •........ ......

~~~~~~~~~~~.;....... ........ ...:.......................................:...................... .............-.....-.. .....-..-..-..--....--.......-..-.....-..-.-

PROJECT COMP BY JOB NO.

CHK BY DATE

665. z 2.5, 2.63 Of(o~(09 . Z', ',305 45

607.2- 27.6 4,351 4, S7

4/7Z7 31.5 65 1O 794

(,/Z. 2 32.5 ~61 81771

?,, 3. ,I 9,171

&A ~Z 6,~ ,395 9,573(,5 3S.5 6.,475 /0,0/0

6d.. 3(--S 4?o o,(34,17.2- 57.5 /,.4 0,871(0/9.z 3B.5 7,539 /1,301

620.6 6,07+. 12,111

D-9IPC Lower Dam

or* E . ~ S~~ * *~ '

PROJECT COMP BY- JOB NO. ~

CHK BY DATE

,54 72?

* b1 L.~.2~Q~o~ 21 4eir "A" is 44,e. Jop1a

-7,7 0.5 2.0 .- 4 SCk)OO CIOeC to,

e,7 7. wi -'l u~e 1xhre a-c.6V7. 7 1,5 2.,..1 3 miclua Sec~hai.u/

2.0 Z .' Q U7 dievm\ of 4'wiie-Lj~

S88.7 2.5 I 27Z5IQ h 3J.Q reprecQs.13.0 2.73 4j3 PIOW 4iVo~ 0..O 51 -e,

S89.7 S.V 2.74 11781 Con)CrI4. 2.79 Ila Vno~ , wv

5.0 3.o7 i/loa oo FllaS6 scomvSn4 c

*511.7 S .3L1,5 OF4ez inr "jid)oat ze4Anz' ~ ~ ~ 02108 LOAP- Mmmp I.AU1V'on o

or MMP We'd Q

6~- 1/0.0 u. S-3

U (q 7. 2. Ito w53 ~Veir 4,c 6,jW.SV3~.2. 12.0 I5 2 sf~lu.wa, S"o-iC '

15? 3.0l4Z* SXPo..2. i~

*~~~4 1o. Z (O0,?5

* ~~~Oz.z. 2~ /~.

0(0.

22.z. 350 14,80

614.. 30.0A56(1/88s 32

41f,. Z 33-0 **-..........-..... .*.

C PROJECT COM!P BY JOB NO.k4'rl, rvCOAV - /eLt'/d.O~

>q'"t~,r~/a)6CHK BY DATE

2rs -cc4o7a oon (lop W of o/m.oL0') z

o&~~~~~A0n 70nc~ ~.-,k

Jfon6,.

4.3.

4-- 0 0

.M.~~ - - -077

a ek v o

%PO/fl t.)7~

90 2,.8 1o

6/3.4 /1.0 2433 078Of~~ l~ ~,/19-~4 20 ,234 .66*

7049 1.0 -,5/J37(48+140 5 ,'00

601.+. 9.0 a 76094 i$jft (/S86Szo p

64-4 /0 06 7- Ol-

U0.0 1. 3,533

.4 9.4 Av70 4184- -q

- ~ . . . ~ .. ~- .-* * -.-. ...................................-

PROJECT

C ~ COMP BY 103 NO.

- ~ i - : ~ CHK BY DATE

___- ".T...~................. -. ~

_________________ -- ____________- I'.-.

-. ~ .. 0

a ____ ____ ____

2':3

L. 6 p

2w '-I

* ....

A.

a

ci

* U_________________________ lj~

U U,

4* .

V)

* .:____ I ___

** §

r SI .1

-~

%* *!

D-1 2-. *~. * *.~*.. ~*... ~r*JRC4~WPk41fl1. *~ * .* *

~? -. ~ . .

* .* -. -.

.~

I. C Sct a

LL I- C

LL*

I U.LL 0-rL

ZC M

4C V

I& c

(x zM ZC MC

49 Z

IL 1 -0

a. C 0 i

06 a .CkC

LIU Z

L.. 0 -C 46

0 c0sC Loe DamC

* ~ L 0 . -

C p-

IrI

r. C c* C-

CC

06oIff

c cc4C

Id **

C V ur r e

* L a &r -

C -

-C. C CL

c a . .

z e C

D-1

rc 6

* = 9--AV

7

*OOOOOOOe 000S

o

F

-

* emeege ieee.*

0

.-

*

e.g...... eec6

C

- gggegeegg i.e* C-cr 30

-c* SaN

*0 £

o~ e.e..eee.e *0

S&leuc

CC6.E C0'- C-.4 Z

*. I- 4e.ce e~. ceecci

* - Ccc

* -c30 -~cc

* So.0-*

* C e.e.c.. Ce...C b.* __

* '-CCoO-C3CC

Z ecee e.e.c e eece e

* C ce* C-C.

O* CO

C0

Ce~ e e e e e e e eQ e

O 0 0Co ~0C

r N D-15C IPC Lower Dam

* . CC Co* Co C C C e e 0 0 ~ CCo

Co N E~ 4 U ~ P. 4 00- N

Co Co* **q~~q~ ~*~@'**~@ .. ~ ~ -.-. *..--.'*-..~** *.~'**

........ -- --............. . . .--------

. . . . . . . . . *. **.**. . -.. . * .

........... ~....* *ft**W * * * * ~ .. .

AD-A157 234 NATIONAL PROGRAM FOR INSPECTION OF NON-FEDERAL DAMS 2/2INTERNATIONAL PACKING..(U) CORPS OF ENGINEERS WALTHAMMA NEW ENGLAND DIV APR 79

UNCLASSIFIED F/G 13/3 NL

IIflflflfl

IIIIIp

- . -. -. 0

M l 2-

h2.

1* I4 1-NAIOA LA OF STNAD

M~wop OnCMON TP CW

%

iI V. -.1 7' -I

II

ix.

Cc

mob.

CL

dcU'

IP Lowe Da

W* U~h. %6%-

* % 4.

C0 0

ILC

*c

-c

c c4L

AL

A L

ucoc

C~ CC

ea z

C- c-

CL* 0 0

aci 'M It tr

V. N r-

ft

ALI 06e

44

06 C

D-1IP oe a

PROJECT COMPr By JOB NO.

2~c z~~e ~CHK BY DATE

7 7ne or7Jj sp/Iw&a prov/deed az4 -A L"10'rp. js 4r-)e .zlp - lo

/10 3.4 L5 4.5 160

.5 3.51T 30 5.0 82.0 5.45 .6 5.7 228

2.5 3.70 "1 (..0 24-7613.0 3.77- " 87 7.o 311

3.5 9-.7Z 11 Ifc 8- '

10.0 .531

Valve if;-" /a 4Zm)rddk of I4yv-'ro W) c 1'6~ 6rokr , TaL/ Ic Sd3 (i) T-olaJ dapgaca'j I8X31i 6F00 es/ . *-

() Spilwa caa=h al/ Inpc 2 55 S '5Oct (,sev'.a3 .j

Zn 1f/ob 4Ovv or emt ij)i aluare motes v /,azo c4z 4or Pm (w r,6P

F/4 28 U t 3LO S0,060 CI

pmrzIZ' ,7 +E "om ". /20-180 CAi

Spi/Iwa is oap 6/e of Z3117 /?*/a~ of me. PAPF cznd q4~ % di mJ' & .lw,#Ao~ * ~ 4wg pVV is aboroxawma~ epw / 4D~ PMF f* C/o w fro

At~n'~A/4. drat1Jlc c,'. once CWTdA.. flow

am 4^a#/-Mc. Ai 2W' ofvni a a ~ aI~ ceeAo 1owx A4a ,a0a£ Sp~em0 ocm*o rese,// ea Fk re,' A. va//e. -th &'~ $GAC k.se

t/ RO A) ejad/coP&,,,kFkJAJain v/Gd9 (Rl d ii'bM

9t 90 And 'a AA dwa 4 A w FIG dwud #6 4i toA& %

/16rA4n d C~t ig 1 P9.....

**%**.9 %

PROJECT COM1P By JOB NO.

CHK BY DATE

va'e*secr nj. lod,0

Vie ouqb -5klotch4 £e/oci sa a. plnve. of ibr- vaij Zio,~e, is 'es, t~t

+ .+6verio ,i P/OW le 6 occu~r al a flowo mk/e of abaow' :2,cY,)secnS- C

he in 44 arroud va#/e' sechjonjwt qppsrwi? of Me dav7

IL

. 7

N~ :%

vo

C CHK 0Y DATE ....

009g No 0

10

~ ~ 40

It-~A

-to

'a Is V) F3a so)

* .c

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-~~~ E. -Z -cz*~

.6 (20.8 - vK!

-D 2

PRJETCOMP BY JOB NO.

CHK BY DATE

or.

1*3

'I<

D-22~

1rnujru WL I~UtUI Jug. 11W.

CHK BY IIDATE

p PeF c-, 3qo'oa S GW/d over/op A.e Clp Ff at,, 4t 41

Of 42,7EO CA "t,/01 3Vedv4 At 04'r

I EM. /100o- 2 - 234 &e~c.. //0'-. -c

L:. f~Aidurc, decri-e/. R aia'ar ;lood #ijou/,*o .I 'T Ac vokg -e ,'lJoveop ) cc ur #/boZ a/ kip yV Scd ;iikeA C..- Ptbuo 4'a c.-o d &'W

0ftvr,,,I~vj of ihM- coem ,PcnsA ah~,# Oc4 ~ !. l f(t'2 e 2,'yrClaotii*i -flood cvx dot-iett W 1e 4c~

I?) 0&ddvL.4on, ha-,o' on~ eonerz.aon w,/;4 Ih#- own~er, he,'4e 1,5vchc~ aaca#~. pD~k0G74 'S ~ (20C3~A~irySc T yh -Pws4x

c)h/C. A10 e.8~h~ ~~!A~ . Zf7arw :4yez 06dd~ ,c fl"xf.,K radurc, di Me d,*A(c,, )and 9 S; &' Cio=-c/o sfthan &Iowa)A#- 016Mm no evleknce. Wf sSpnee~ce- ftvsc~dyf &0.4r.kc~kf cf WtC6&OCIeyl

//owever, 4Aerx. jo esbwriej we wry roA and t/o npolaie aote/a,/ed p ke.

re. A-"--4

.%.

D-23 .

JPC Lower Dam ,

.% %

jPROJECT COM.P BY JOB NO.

CHK BY DATE ..-

fo'~~",c. 000- ., I.47 aea-f'z )c /I.1 0 / ere - ee t

yo PL /00rOd .1- 0 1J t Ori'e b'"kr er4l du/U/: Ynrj

38o 4. Ft r

A~m4 ~rc/,~proceclure, fA#, flc Zft Lowe, to," cov;-,:4- a/keepmy bpc 4Q/yIn p/are. lb man 'n a x,mal Arad .Sr /.~rr~~I.~. 4 cc~al )4e dar,nd,caei/e MA,, ytoj X&- oc,rred over Me, 16p i"' e'~ii 44 ,z 4 n

procea/we.. r2i od/Icmp41om P111A~y Dows -o/h~ IVS 4-le rennoeio ,prev-e.4

WM £4air sarC-~ce at Avp of aoi irol d~?#n /,7 Me- evrir,/on qAsarvdl C/or,.-,9/a~pechionr o'sdciaft r.fi-z l~q Me- A," woold Le-.

so.4 /-0' "'1 =-ehC'J.+ 20C

Q - /6 x 3. 73 u74~ #- S$yz5CA~

-/op -/oyp and Ake MMJL~y 4 wale, ai ;b & o ia2 jsorke oe-lo~ oneseeu',,r shorela,ie. ft.,/Wl occur.

77n-jgie for reservo, i r p

1z 2.1 -2/ hr3 2y 1,3 mernulfEs

D-24 IPC Lower Dam

PROJECT COPBy J 0 NO.

CHK BY DATE

'1 21q

t 3, 9

acr -9.. t-

ciss

QaA

-V

zi (vs (.,5. V z 4. a F

V, 3(e

**,, Soo

VL (s, -2. So .?f

Q~v 4.75 -4- tI7,e

pm a dfOr"-a e zsug9.1 fl/o erw/@Flof a/ 6ces

e~ ~h -,WI eeviobood if) Me d~en fal/,,t 2,n4lyxiz ee 43Joo-pw~ Vf-w~~~~~~ ~: esiz

1 ~e' tOO

fddhy -Xde o dre)qleoV C-plCAaooSOI 6

7R oJ E6 CICamp By JO0B NO.

CHK By DATE

3 / 3

1/1

Z A - -I t s

40 so

F,o-,v Conr.-cb ons wj1 , perzonel of /i A/cu go14, tcb "let knto-Cez~oarc/ ~oai lee,r~ea' #Ia wneral f/oSiny hjAe P,;1 f/ow.-, Of dcov

2,000 io, , So Cfs d1 tra 6elbw J Ac. XPC lowrLam . Ak zhcw,MIe above synyop. eh -se/'r,~ /iJ?'f/ 0 0 wJdc/

* .?1 ,.~~i elo' /oca/nc eel-' cc45rI)'j'CW afe~ , oa locaze minor laay..r CCI-

/?0)ev-er, a-4. rw~ C4/0k/ a)a 9sc w4oos/df 4ove Abit. (dbk4 ke I~4. -s .omntee~ e t-Joodi a-curz. Ao~er food &olsc4 ez

are m*a-t4u,, 4 r forls 8 0 711 ~ ~ 7nw, .lod .e .

,4 1/Qfe wWud O~cur Utz/ uOsreoflb dow anfl U/ 402 0,wOLviWig

h 9 3 feel. Th",e are ita mr;,ol',ces localt- - lv,z aaI6, ooro i-fA'e ca 'njj #*e f/ocd peai &oin A',/bre- 4dz tvfora IzF~~S~ kr

qnZA90 CzS s1Jfc.A7Aj - 5,',$, cAAjr" Ak .'40re AiC~ a feg

D-26IPC Lower Dam

-- . .-

PROJECT COMP BY J0o3 NO. -..

CHK BY DATE

- -73

'K I

4-t

t8

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PROJECT COMP BY JOB NO.

CHK BY DATE

C4 N

'3 !o..1...I

00e

D -28 oo Lw

*, %°°o.° Io°.

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. .. . .... .. ... * / -_ * *. . .~

* % S.- . .* - S ** S**~* ** ~ ' 5 . . .. . o•° 1

S.. % % '...... . . . . . .

-- **--*. *.. -- ..--- *.,*. 555%5*. , ,, * . -S* .-*** --** .... 4 "S S, ,r + * +. . ...~*S55* +,.. ..- , ,,+:.,.., . ,,% ... ;.,'7 ._'+"-. -. . .. +,,. + - +. ." .. ..- ,,. . ,.. *+. -. .a . . . .. ., ..-..- . .-* ,. ...-.. u .. *.-t-,,,-.+ . .. . . .- ,. .. +.-. -. _

[PROJECT COMP By JOB NO.

CHK BY DATE

a IV.

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qw. 0\ .4. 'rD-29 PC Loer D.I ze

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4. ~.*0**4,* -

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.4*4*44

r4~**~*

L

APPENDIX E

Information as Contained in the NationalInventory of Dams

*0

p. *E .d*,

4,.4~. -0* ~ -

I.

f4.

~.4.

.. .4

.4,d

4%

.4 .~ 4'.

"V

'.6.

* - rwW:'4w~w~~~?,- ~ - '*~ ~ * *~

. . . . ......*.4.*.*.*.*.~.. . .

-.

__ ---- .~-..-.,- ~ W~~W~~*":.'.. **~%

-*'.~0~ *~ *'. -* ...... 4.04

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0 .J=am~3 v~ I* . ~-. i ;Oi

z qj a w - -

4 ~4 Idc 3I

I =jus

U2 2 I.4 aSo0 -

44

FILMED

9-85

DTIC________a-

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