10D-041 Button Shop DAM inspection Main St Leeds TacyCOMMONWEALTH OF MASSACHUSETTS v�dj3G n'
- EXECUTIVE OFFICE OF ENVIRONMENTAL AFFAIRS
DEPARTMENT OF ENVIRONMENTAL MANAGEMENT
w s P.O. BOX 173, OLD COMMON RD., LANCASTER, MA 01523 PHONE 47 92 -7716 AL MAN
FAX 792 -7718
NOTICE OF INSPECTION
September 11, 1998
Argeo Paul Cellucci
GOVERNOR Northampton Conservation Commission
210 Main St.
Trudy Coxe Northampton, MA 01060
SECRETARY
Dear Sirs:
Peter C. Webber
COMMISSIONER The Department of Environmental Management's Office of Dam
Safety has performed a visual inspection on the Button Shop
Dam #2, in Northampton, as prescribed by Dam Safety Rules and
Regulations adopted under M.G.L. CH. 253 11 s. 44 -50.
Our inspection Summary and Recommendations are attached for
your information as the owner of the dam.
You are hereby notified to initiate corrective action as
recommended in the attached report and to eliminate the noted
deficiencies within one (1) year of receipt of this NOTICE OF
INSPECTION. Furthermore, in accordance with Rule 302 CMR
10.17, the dam has been found to be hydraulically inadequate
or non - operational and your spillway discharge capacity under
the standard test flood is inadequate, and /or your outlet
capacity is less than the estimated inflow rate, and /or your
outlet controls are inoperable. Please refer to 302 CMR
10.00 - Dam Safety Rules and Regulations, and to the attached
report for further information. When corrections are made,
please notify the Office of Dam Safety.
If you disagree with our findings, you may engage the
services of a registered professional civil engineer to
perform an independent evaluation. If you choose this
course, you must notify this Office of your intent within
thirty (30) days, identify your consultant and the scope of
services to be performed, and include the date the
consultant's report will be completed.
If you have any questions, please contact this Office. Thank
you for your cooperation.
OWE
R. David Clark, Acting Director
Office of Dam Safety
3B
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MW
PREFACE
The purpose of this report is to identify expeditiously those dams that may pose hazards to
human life or property. The assessment of the general condition of the dam is based upon
available data and visual inspections. Detailed investigation and analyses involving
topographic mapping, subsurface investigations, testing and detailed computational
evaluations are beyond the scope of this report.
In reviewing this report, it should be realized that the described condition of the dam is based
on observations of field conditions at the time of inspection, along with other data available to
the inspection team. In cases where the reservoir was lowered or drained prior to inspection,
such action, while improving the stability and safety of the dam, removes the normal load on
the structure and may obscure certain conditions that might otherwise be detectable if
inspected under normal operating environment of the structure.
It is important to note that the condition of a dam depends on numerous and constantly
changing internal and external conditions, and is evolutionary in nature. It would be incorrect
to assume that the present condition of the dam will continue to represent the condition of the
dam at some point in the future. Only through continued care and inspection can there be any
chance that unsafe conditions will be detected.
SIG D
ons mg Engineer
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TABLE OF CONTENTS
Pave
PREFACE
i
— I. DESCRIPTION OF PROJECT
1
1.1 General
1
— 1.2 Project Description
3
1.3 Engineering Data
II. VISUAL INSPECTION
5
— 2.1 General
5
2.2 Operation and Maintenance
7
2.3 Hydraulic /Hydrologic Evaluation
7
III. ASSESSMENTS, RECOMMENDATIONS AND REMEDIAL MEASURES
8
3.1 Assessments
g
3.2 Recommendations
g
— 3.3 Remedial Measures
g
3.4 Cost for Recommended Repairs
9
REFERENCES
11
APPENDIX A - Drawings
APPENDIX B - Photograph Location Plan and Photographs
APPENDIX C - Visual Inspection Checklist
ii
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ii
I. DESCRIPTION OF PROJECT
1.1 General
ftr A. Authority
The Massachusetts Department of Environmental Management (DEM) contracted
Haley & Aldrich, Inc. to perform inspections and develop reports for a number of
dams within the Commonwealth of Massachusetts. The inspection report for the
Button Shop Dam No. 2 was conducted in accordance with that contract and also
under the Authority of Chapter 253, Sections 44 -50 of the Massachusetts General
Law.
B. Purpose of Work
The purpose of this investigation is to inspect and evaluate the present condition of
the dam and appurtenant structures. More specifically, it is to compare the existing
structural and hydraulic conditions of the dam to the conditions reported during
previous inspections, and to re- evaluate hazard and size classifications as they relate
_. to present Massachusetts 302 CMR 10.00 Dam Safety Rules and Regulations. DEM
will use this report to determine which owners have undertaken remedial action since
the last inspection and to determine if conditions have worsened since the last
inspection.
C. Scope
1
The investigation is divided into four parts: 1) obtain and review readily available
reports, investigations, and data pertaining to the dam and appurtenant structures;
2) perform a visual inspection of the site; 3) evaluate the status, and need for an
emergency action plan for the site; 4) prepare and submit a final report presenting
the evaluation of the retention structure, including recommendations, remedial actions
and associated costs.
1.2 Project Description
A. Location
—" Button Shop Dam No. 2 is located in the Town of Northampton, Massachusetts.
Together with Button Shop Dam No. 1 (DEM No. 2 -8- 214 -9), it creates an
impoundment on the Mill River in Leeds Village. Button Shop Dam No. 2 is located
beneath and 4 1 f2 ft. west of the Main Street bridge over Mill River. The dam is
shown on the Mount Holyoke, Massachusetts, U.S.G.S. Quadrangle, with the
approximate coordinates of North 42 °21'00" and West 71 °42'00 ", as shown on the
Project Locus, Figure 1, Appendix A.
No
There is no readily available information concerning the original construction of the
dam or its history. Some engineering data was available from prior inspections
(Ref. 1 through 4). A sketch of the plan layout of the dam is included herewith as
Figure 2, Appendix A. A section through the dam is presented in Appendix A,
'— Figure 3.
B. Ownership and Purpose of the Dam
The owner's name and address are given below:
Mr. Eugene A. Tacy
383 Spring Street
Village of Florence, Northampton MA 01060
According to discussions with Mr. Tacy, the dam was formerly used for power
generation. Presently the dam provides a recreational pond for skating during the
winter.
C. Description of the Dam and Appurtenances
The dam consists primarily of a cut stone masonry spillway structure about 18 ft.
high and about 86 ft. long. Mortared cut stone walls, about 6 ft. high, form the sides
of the spillway and extend upstream to form training walls on the right and left sides.
A granite block wall also serves as the left training wall for the spillway outlet
channel on the downstream side.
A concrete arch bridge supporting Main Street crosses the Mill River 4 ft.
downstream (east) of the dam. The crest of the arch is only about 4 ft. higher than
the crest of the spillway, and the width of the arch opening at the bottom is narrower
than the spillway. A 10 -in. diameter sewer pipe, suspended from a 4 -in. diameter
metal pipe attached to the bridge at about deck grade, cuts across the arched opening
on the downstream side of the bridge. The close proximity of the concrete arch
bridge to the spillway, the low and relatively narrow arch, and the sewer pipe
constrict flow from the spillway, reducing its capacity.
Information from previous inspections indicated that the outlet works consisted of a
12 -in. diameter cast iron pipe with a gate, and a 10 -in. diameter pipe with a gate. No
controls were observed for these outlets, and they have likely been dismantled.
Previous inspections indicate that a 10 ft. diameter penstock was formerly present on
the left abutment, which leads to a power station on the east side of Main Street.
�- However the power station is no longer present, and the inlet and outlet to the
penstock have been blocked by dumped fill.
" 2
MW
SM
F. Post - Construction Changes
There is no information on post- construction changes. The penstock, formerly used to
divert water into a powerhouse, has been plugged with fill at both ends.
4
L-71
II. VISUAL INSPECTION
2.1 General
On 19 March 1998 Haley & Aldrich, Inc. completed a visual inspection of the Button
Shop Dam No. 2. Based on that inspection, the dam was found to generally be in
fair condition, although a number of conditions were observed that warrant attention.
The following paragraphs present a description of the conditions observed during the
inspection. In addition, refer to the photographs and checklist form included in
Appendices B and C, respectively, for additional information and comments.
A. Dam
The Button Shop Dam No. 2 is a run -of -the river, stone masonry structure. The
spillway is approximately 86 ft. long and 18 ft. high. Bedrock is exposed near the
abutments and likely forms the support for the stone masonry spillway.
At the time of the inspection the pool level was approximately 9 in above the spillway
crest. The water flow obscured the upstream and downstream dam/spillway faces.
Several indications of fill settlement were noted, as indicated on Figure 2. These
areas included: 1) in front of the left side masonry wall, upstream of the spillway;
2) behind the left side masonry wall on the upstream side of the spillway; and
3) settlement of the roadway on the downstream left side of the spillway. It is
unclear whether these indications of settlement are isolated cases of localized
settlement, or reflect loss of soil (piping) behind the left abutment area. We
recommend that additional engineering evaluations and monitoring of these areas
should be conducted to determine whether the settlement is indicative of a problem
which needs to be corrected.
B. Appurtenant Structures
The original penstock sluiceway has been abandoned and backfilled. The 10 and 12
inch diameter outlet pipes previously observed were not visible due to heavy flow at
the time of the inspection. No controls were observed for the outlet pipes.
C. Downstream Area
The river channel immediately downstream of the dam is partially restricted by the
concrete arch structure that support the Main Street bridge.
A portion of the masonry block training wall located about 30 ft. downstream of the
Main Street bridge on the left side has failed; stone blocks have fallen into the
stream bed.
5
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D. Evaluation of Observations
This assessment of Button Shop Dam No. 2 is based on a review of the previous
Phase I inspections, and a visual inspection performed on 19 March 1998. As
indicated above additional studies should be undertaken to adequately assess the
current condition of the dam.
The following conditions were identified during the inspection:
❑ Fill present on the upstream side of the left side masonry block wall was
observed to be irregular, with numerous holes and depressions. The largest
number of holes appeared to be concentrated along the contact between the
fill and the block wall. The largest hole appeared to be located over a former
-- penstock. It was not clear whether those depressions represented loss of soil
into the former penstock, erosion during a flood event, or other mechanism.
❑ A relatively large depression, 4 ft. deep, 15 ft. long, and 10 ft. wide was
present on the left side, downstream of the roadway. Based on a review of
the previous inspection reports, this depression may have resulted from the
removal or the possible collapse of a former manhole.
❑ The roadway has a low area on the left side of the bridge, approximately 4 to
6 -in. deep, downstream of the spillway. Water was puddled within this
relatively broad depression at the time of the visual inspection.
— ❑ The left side stone block training wall, approximately 30 to 35 ft.
downstream of the bridge, has collapsed. Cut stone blocks are present at the
toe of the slope.
' ❑ Chain link fences are in need of minor repairs. There was no fence along the
left side retaining wall, downstream of the bridge.
❑ Foundations for the arch bridge, and a sewer pipeline hung from the bridge
on the downstream side constrict flow downstream of the spillway.
❑ No closing mechanisms were observed for the 10 and 12 in diameter outlet
abandoned outlet works.
❑ Masonry block walls located on the upstream side of the spillway require
some repointing of joints. Brush was observed to be growing out of some of
the joints. The capstone on the left side of the dam on the upstream side
appeared to be undermined by about 2 to 3 inches.
❑ Water flow was observed within a joint beneath the lowest visible stone
masonry block on the upstream left side at a 90 degree corner in the wall.
0
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2.2 Operation and Maintenance
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A. General
The owner, Mr. Eugene Tacy, was interviewed concerning the operation and
maintenance of the dam. The following is a summary of the interview.
�- Both Button Shop Dam No. 1 and Button Shop Dam No. 2 are run -of -the river
structures which create a small impoundment on the Mill River. Mr. Tacy confirmed
that the dams and pond are used only for recreational and scenic purposes. In
addition, there are no known operating outlet works or other measures that control or
affect the pool level. There is also no periodic maintenance program. The stone
spillway structures are in good condition and do not require active maintenance.
B. Emergency Warning System
There is no known established formal warning system or emergency action plan for
the facility.
C. Evaluation of Operation and Maintenance
There is no known operation or maintenance plan for the facility. A systematic
maintenance program should be developed. In addition, an Emergency Action Plan
should be prepared to alert downstream residents in case of an emergency. The plan
should be filed with local officials.
2.3 Hydraulic/Hydrologic Evaluation
There are no known hydraulic /hydrologic evaluations or calculations for the Button Shop
Dam No. 2. A hydraulic /hydrologic evaluation should be undertaken to determine the
overtopping potential for the facility.
7
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..
III. ASSESSMENTS, RECOMMENDATIONS AND REMEDIAL MEASURES
3.1 Assessment
The inspection of the Button Shop Dam No. 2 on 19 March 1998 resulted in the finding that
the structure is generally in fair condition. Several maintenance and remedial repair
measures were identified and are discussed in the following paragraphs.
3.2 Recommendations
It is recommended that the repairs /maintenance items listed in Section 3.3 be made by the
owner.
3.3 Remedial Measures
The remedial measures described below are broken into two categories. The first category
will require the owner to hire a qualified engineer to conduct certain studies and evaluations
and prepare documents to implement the remedial measures. The second category can, if
desired, be undertaken by the owner without the assistance of an engineer. This work may
require state, local or government permits that should be investigated prior to starting work.
Remedial measures requiring assistance from a qualified engineer:
❑ The cut stone masonry training wall located downstream of the bridge on the
left side which has failed should be repaired.
❑ Several indications of settlement were observed on the left side of the dam.
An evaluation should be completed to determine the cause of the settlement,
e.g., are the holes isolated instances of settlement or could continual soil
erosion be present under the left abutment?
❑ There is no longer a control mechanism for the outlet works. The control
mechanism should be restored.
❑ Complete a hydraulic/hydrological evaluation to determine whether the arch
bridge and sewer pipeline prevent the dam from adequately passing the
storm flow.
❑ Evaluate the condition of the outlet pipes and the existence and operational
condition of gate controls. Develop appropriate plans to abandon or repair
the outlet works.
❑ Establish a periodic technical inspection program.
,u�
..
❑ An operations and maintenance plan should be established for the dam.
❑ An emergency action plan (EAP) should be established and periodically
updated.
Remedial measures that can be undertaken by the owner.
❑ Minor brush growth on the upstream side of masonry block walls located
upstream of the spillway should be removed. Trees and brush along the
downstream left training wall also should be removed.
❑ The capstone on the left side of the masonry block wall upstream of the
spillway which faces the impoundment is undermined by 2 to 3 inches, and
should be repointed
❑ All masonry block walls require minor repointing of joints.
❑ There are several areas where the vertical masonry block walls are relatively
high, and there are no fences or other security measures present to restrict
access. Additional chain link fencing should be added, e. g. in the location
of vertical masonry block walls.
❑ The dam should be periodically inspected by qualified personnel.
3.4 Cost for Recommended Repairs
The costs given below are broken into the same categories used for the remedial
measures indicated above. Please note that these costs, including estimated labor and
material costs, are based on limited investigations and are provided for general
information only. Actual costs will vary.
0
4—
..
Remedial measures requiring assistance from a qualified engineer:
REMEDIAL MEASURE APPROXIMATE COST
' Design and repair of downstream block wall
$15,000
Evaluate ground surface settlement
$3,500
Evaluate outlet works and controls
$2,000
Perform periodic technical inspection*
$1,300
Perform hydraulic /hydrologic evaluation*
$3,000
Develop Operations and Maintenance Plan*
$1,000
Develop Emergency Action Plan*
$3,000
_ Subtotal
$28,800
Engineering and Construction Contingencies (20 %)
$5,800
Total
$34,600
* Based on simultaneous analysis of Button Shop No. 1 Dam
Remedial measures that can be undertaken by the owner:
REMEDIAL MEASURE APPROXIMATE COST
Repoint masonry walls
$4,500
Remove brush/trees
$1,500
Provide fencing
$2,000
Subtotal
$8,000
Contingencies (20%)
$1,600
Total
$9,600
The total estimated repair cost for the Button Shop Dam No. 2 is approximately
$44,200.
10
..
REFERENCES
1. "1970 Inspection Report on Dams Located Within the City of Northampton,
Massachusetts ", Tighe & Bond, Inc.
2. "Inspection Report - Dams and Reservoirs ", R. C. Salls, P. E., 11 September 1974.
3. Letter from Executive Office of Environmental Affairs, Department of
Environmental Quality Engineering, Division of Waterways to George D. &
Margaret W. Tobin, dated 8 March 1977, and attached "Inspection Report - Dams
and Reservoirs ", Harold T. Shumway, 15 September 1976.
4. "Dam Inspection Checklist, Massachusetts Department of Environmental
Management, Division of Dam Safety ", Jerzy Pietrzak, 5 October 1990.
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DEM DAM INSPECTIONS
BUTTON SHOP DAM /2
NORTHAMPTON, MASSACHUSETTS
PROJECT LOCUS
UNDERGROUND
ENGINEERING &
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SOLUTIONS APPROXIMATE SCALE: 1:25,000
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DAM SAFETY INFORMATION SHEET
prepared by Haley & Aldrich, Inc.
for
Massachusetts Department of Environmental Management
Office of Dam Safety
Button Shop Dam No. 2
Description:
National ID No: MAl255 IStatelD No: 2 -8- 214 -10
Name of Dam: Button Shop Dam No. 2
Name of Impoundment: Mill River
River / Stream Name: Mill River
Owner: I Name: Mr. Eugene A. Tacy
Address: 383 Spring Street, Village of Florence, Northampton, MA 01060
(Telephone No.: ((413) 585 -8878
Type of Ownership: I Private
Contact Person/ Name: Mr. Eugene A. Tacy
Caretaker: Address:
383 Spring Street ,Village of Florence, Northampton, MA 01060
Telephone No: I (413) 585 -8878
Site Information:
Hazard Classification:
(Significant I Size Classification:
Intermediate
Type of Dam:
I Run of the river; Stone block masonry
Purpose of Dam:
I Recreation, formerly used for power generation
Structural Height:
24 ft Hydraulic Height:
118 ft
Crest Length:
150 ft I Drainage Area:
35 sq. miles
— Normal Impoundment:
113.5 acre -ft I Maximum Impoundment:
�40 acre -ft
Year Completed:
I Unavailable
_ Spillway Information:
Type: Cut Stone Masonry Spillway
I Width: 86 ft
Capacity: 275 cfs for 1 ft overflow
Page 1 of 2
DAM SAFETY INFORMATION SHEET
prepared by Haley & Aldrich, Inc.
for
Massachusetts Department of Environmental Management
Office of Dam Safety
Button Shop Dam No. 2
Location:
Latitude: 42 °21'00"
Town: I Northampton
Inspection Information:
Inspection Condition: Fair
.— Last Inspection Date:
19 March 1998
Army Phase 1: N
Evaluation Information:
E1 IType of Design:
2
E2 I Level of Maintenance:
3
.... E3
Emergency Action Plan:
2
E4
lCondition of Embankment:
2
E5
lCondition of Concrete:
3
' E6 Low Level Outlet Capacity:
1
F: \ 12070 \007 \FINAL \DAMSA FE. W PF
Longitude: 171 °42'00"
USGS Quadrangle: I Easthampton, MA
Consultant: I Haley & Aldrich, Inc.
DEM Phase 1: I No
E7 Low Level Outlet Condition:
E8 Spillway Discharge Capacity:
E9 I General Condition:
E10 I Estimated Repair Cost:
E11 (Roadway:
E12 I Bridge:
1
NA
3
$44,200
No
Yes
Page 2 of 2
3. HOLE ON THE LEFT ABUTMENT DOWNSTREAM OF THE DAM. THE HOLE
IS BELIEVED TO BE EITHER FROM THE EXCAVATION OR COLLAPSE OF A
MANHOLE, OR POSSIBLY A SINKHOLE.
4. LOOKING RIGHT ALONG THE UPSTREAM SIDE OF THE DAM FROM THE
LEFT ABUTMENT. NOTE THAT THE CAPSTONES HAVE BEEN UNDERMINED,
AND BRUSH GROWING FROM JOINTS.
L
L
s
5. LOOKING RIGHT ALONG A MASONRY WALL ON THE UPSTREAM LEFT
SIDE OF THE DAM. NOTE THE HOLES WHICH HAVE FORMED DUE TO
EROSION.
L-7
6. LOOKING LEFT FROM THE RIGHT ABUTMENT AREA. NOTE THE BRUSH
ON THE UPSTREAM RIGHT MASONRY WALL.
L
L
7. LOOKING RIGHT ALONG THE SPILLWAY FROM THE LEFT SIDE. NOTE
THE FLOW CONSTRICTION CAUSE BY THE ARCH BRIDGE FOUNDATIONS.
S. LOOKING UPSTREAM FROM THE DOWNSTREAM RIGHT SIDE. NOTE THE
UTILITY PIPE HANGING FROM THE BRIDGE.
9. LOOKING RIGHT FROM THE LEFT ABUTMENT AREA. NOTE THE REMAINS
OF A FORMER PENSTOCK INTAKE, WHICH REPORTEDLY WAS BACKFILLED.
10. LOOKING LEFT FROM THE DOWNSTREAM RIGHT ABUTMENT AREA.
NOTE THE MASONRY BLOCKS WHICH FELL INTO THE RIVER DUE TO A
MASONRY WALL FAILURE.
1. LOOKING RIGHT ALONG THE MASONRY WALL ON THE RIGHT SIDE OF
THE IMPOUNDMENT. NOTE THE BRUSH GROWING OUT OF
JOINTSIN THE WALL.
2. LOOKING RIGHT AT THE BRIDGE APPROACH ON THE DOWNSTREAM
LEFT SIDE OF THE DAM. NOTE DEPRESSION IN THE ROADWAY.