Infastructure Assessment E yy
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Tighe&Bond, Inc.
53 Southampton Road,Westfield, MA 01085
Tel.413-562-1600 Fax.413-562-5317
I
324 Grove Street,Worcester, MA 01605
Tel. 508-856-0999 Fax. 508-852-8741
25 Village Square, Bellows Falls, VT 05101
Tel. 802-463-2200 Fax. 802-463-1188
312 Court Street, Middletown, CT 06457
Tel. 860-704-4760 Fax. 860-704-4775
488 Main Avenue, Norwalk, CT 06851
Tel.203-849-0898 Fax. 203-849-0355
Pocasset Village Marketplace, Unit 18
Barrows Landing Rd, Pocasset, MA 02559
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Tighe&Bond
flow of 3,200 gpm. It was assumed that this main was in service at the time of the flow
testing, and thus, the field results were less than the results predicted by the model. However,
if this main is in fact closed, the field results are very close to the model results.
One significant difference between the field conditions and the model is noted, which may
*► partially explain this discrepancy. The model included brand new piping around the NSH
campus, and the available fire flows predicted by the model included flow and head loss through
these mains. It is anticipated that the existing piping will be removed and replaced with new
mains to accommodate the proposed development. The existing campus water mains are old and
are likely severely tuberculated, which would increase head losses through the NSH campus.
Thus, the model as currently configured is more appropriate for determining the flows that
will be available when new piping is installed and it is likely overpredicting available fire
flows under existing conditions.
40 It is also noted that the modeling results assumed that the new site piping would be 8-inch
diameter on the north campus and 10-inch diameter on the south campus based on available
information at the time. Since the analysis was performed in June 2003, it is anticipated that the
"" new site piping will be 12-inch diameter. Increasing the pipe size through the campus will reduce
head losses and may cause a slight increase in available fire flow.
The needed fire flow is approximately 1,250 gpm for the residential buildings and
approximately 850 to 1,500 gpm for the commercial/light industrial buildings. Determination
of these needed fire flows was presented in detail in our June 2003 technical memorandum.
The results of this flow test indicate that the available now of 1,860 gpm is sufficient to
accommodate the needed fire flow for both the proposed residential buildings as well as
the proposed commercial/light industrial buildings assuming that the 12-inch Mill River
Water Main is in service. The impact of taking this main out of service could not be
predicted from the field results.
JAMN0501\Technical Memo\flowtest.doc
-2-
40
Original printed on recycled paper.
Tighe&Bond
N-501
Memorandum
To: Gerry Preble, P.E. - Beals and Thomas
Alan Delaney - Mass Development
40 From: Francis J. Hoey, P.E.
Thomas D. LeCourt, P.E.
Date: November 19, 2003
Re: Flow Testing Results
On November 18, 2003, we conducted a flow test along Route 66 to verify the available fire flow
that .was predicted by the City's hydraulic model and presented in our June 2003 technical
memorandum. The hydrant flow test consisted of flowing one of the hydrants along Route 66 and
measuring the residual pressure at the adjacent hydrant. The traditional calculation for available
fire flow is based on the amount of flow that would cause the residual pressure in the adjacent
hydrant to drop to 20 psi. The hydrant flow test results can be used to calculate available fire
flow using the following formula:
0.54
Pstatic —P20 *Q
residual
Pstatic —Presidual
where: Pstatic is the measured static pressure
Presulual is the measured residual pressure
P2o is 20 psi
Qresidual is the measured flow from the hydrant
The flowing hydrant was located along Route 66 (Prince Street section) near the entrance to the
north campus of the Northampton State Hospital (NSH) site. This hydrant is supplied off of
the new main that was recently installed in Route 66. The residual pressure hydrant was
located to the southwest of the flowing hydrant along Route 66 at the intersection of Chapel
Street and Prince Street. The static pressure at this hydrant was 104 psi. During the flow test,
the measured flow from the flowing hydrant was approximately 1,150 gpm, which resulted in a
residual pressure of 86 psi at the residual hydrant. Using the above formula, the available
fire flow at the site is 2,650 gpm.
In our June 2003 technical memorandum, the available fire flow was presented as the flow that
would provide a residual pressure of 60 psi at the street level, which was necessary to serve
the buildings that will be equipped with sprinkler systems. Using the above formula and
substituting 60 psi for 20 psi, the flow that would provide a residual pressure of 60 psi is
approximately 1,860 gpm. This flow is comparable to the available fire flow (1,800 gpm)
on presented in our June 2003 technical memorandum assuming that the 12-inch main that runs
along the Mill River and connects the existing north campus loop to the 16-inch main on
Federal Street is out of service. With this main in service, the model predicted an available of
4
Original panted on recycled paper.
M.D.T.E.No. 997
Sheet 2
Cancelling M.D.T.E.No. 983-B
Summary of Fees and Charges- Policy 1
Allowed Overhead Distance per House 150 feet or
1 pole,
W whichever is
greater
Overhead Cost per Foot $12.89*
Under Policy 1,there is no allowed underground distance for a single residential home. The
Customer is given a credit equal to the cost of 150 feet of overhead distribution line towards the
construction cost of the underground line extension and the Customers pays for the costs in
excess of the amount of the credit.
*These costs include the tax liability for customer cash payments.
W Summary of Fees and Charges- Policy 2
Allowed Overhead Distance per House 65 feet
Overhead Cost per Foot $12.89*
Allowed Underground Distance per House 35 feet
Underground Cost per Centerline Foot $23.20*
* These costs include the tax liability for customer provided labor and material and for cash
payments.
Effective: May 1, 2000
me
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M.D.T.E.No. 997
Sheet 1
Cancelling M.D.T.E.No. 983-B
MASSACHUSETTS ELECTRIC COMPANY
NANTUCKET ELECTRIC COMPANY
TERMS AND CONDITIONS FOR DISTRIBUTION SERVICE
W APPENDIX A
SCHEDULE OF FEES AND CHARGES
The following fees and charges shall be a part of the Terms and Conditions of
Massachusetts Electric Company and Nantucket Electric Company (together"the Company") in
accordance with Docket No. 97-65 of the Department of Telecommunications and Energy
("MDTE").
I. Account Restoration Charge
Pursuant to the Company's Terms and Conditions, the Company may assess an Account
go Restoration Charge for the restoration of service after discontinuance pursuant to Section 1I.6 of
the Company's Terms and Conditions. The Account Restoration Charge of fifteen dollars ($15)
will be charged and collected from all Customers except the Company's low income (Rate
Schedule R-2) Customers. Customers disconnected at a pole or manhole will pay the same
charge or a higher charge if the MDTE should approve a higher charge for restoration at a pole or
manhole. This charge will be paid in a means acceptable to the Company prior to restoration of
service. Local distribution service connections seasonally discontinued at the Customer's request
will be assessed the same charges.
I1. Returned Check Fee
Pursuant to the Company's Terms and Conditions, the Company may assess a Returned
Check Fee for checks the Company has received from the Customer and presented to and
subsequently dishonored by any bank pursuant to Section 11.5K of the Company's Terms and
Conditions. The Returned Check Fee of fifteen($15) dollars will be charged and collected from
all Customers except the Company's low income (Rate Schedule R-2) Customers.
1II. Line Extension Fees for Policy 1 and Policy 2
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M.D.T.E.No. 997
Sheet 8
Cancelling M.D.T.E.No. 983-B
on Policy 3
If a lower or negative "(A)"results from applying the Formula as so modified, and if, in
the Company's opinion, a risk does not exist regarding either a future reduction in the level of the
Customers' usage or the collectability of the Customers' account, then the Company shall refund
a portion of, or the entire calculated Construction Advance or the full cost of construction,
without interest. In no case shall the amount refunded exceed the original construction advance
"(A)"; nor shall the review result in additional payments from the customer.
If a refund is made, the Company will refund the appropriate portion of any tax liability at
the current rate.
on 3. Additional Payment
When in the Company's opinion, significant engineering is required to determine the
method of service or prepare construction estimates,the Company will estimate the cost of such
engineering. The Company may charge the Customer this cost before engineering begins. If
construction is undertaken,this payment will be applied to any required construction advance. If
construction is not undertaken, the Company will refund any balance not spent. If no
Construction Advance is required, the entire Additional Advance Payment will be refunded.
Effective: May 1, 2000
OW
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M.D.T.E. No. 997
Sheet 6
Cancelling M.D.T.E.No. 983-B
Policy 3
In accordance with the Formula below (the"Formula"), the Company shall determine
whether a payment, by the Customer, of a Construction Advance shall be required. The
Construction Advance'shall be paid in full prior to the start of any construction.
x
Construction Advance (A)= C - [(DM)/K]
where:
A= the Construction Advance paid to the Company by the Customer.
C= the total estimated cost of construction for facilities required
exclusively to meet the distribution service requirement of the
Customer. This cost includes capital and non-capital costs and the
Company's liability for tax required on the value of material and
labor provided by the Customer. Where these new or upgraded
facilities are not solely to provide service to the Customer,the
Company shall appropriately apportion these costs.
D= for a single customer,the estimated additional annual Distribution
Revenue derived from the Customer within the first year following
the completion of the Company's construction of facilities; or for
developments, the estimated additional annual Distribution
., Revenue derived from those new customers in the development
anticipated to be supplied directly with electric service within one
year from the commencement of delivery of electricity to the first
customer in the development.
k= the annual carrying charge factor, expressed as a decimal.
M= 0.5, revenue apportionment factor.
Where the calculation of(A) results in a positive number, a construction advance in the
amount of(A) shall be required from the customer. Where the calculation of(A)results in a
negative number, (A) shall be considered to be zero. When the calculation of A results in a
construction advance of$500 or less, the payment of the construction advance will be waived.
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M.D.T.E. No. 997
Sheet 5
Cancelling M.D.T.E.No. 983-B
Policy 3
L a complete copy of construction plans including the subdivision plans approved
by the planning board in the municipality, if such is required by the municipality;
ii. the estimated new or additional electrical loads, as far as is known by the
Customer; or the names and estimated loads of proposed tenants or buyers for
each building or the proposed type of occupant, as far as is known by the
Customer; barring a known occupant, the Customer's best estimates of the likely
load of each proposed building;
iii. all applicable documents required for the Company to prepare an easement for its
" facilities to be installed on private property;
iv. a copy of the approval of the planning board for the subdivision, if such is
required;
V. a copy of all permits and approvals that have been obtained for construction;
vi. the name and address of the financial institution providing financing for the
Customer, including a contact person and phone number;
vii a copy of a street light proposal for the development, approved by the
municipality, or written notice from the municipality that street lighting will not
be required. If installation is requested after construction is complete, additional
cost may be borne by the municipality and/or Customer if the-appropriate tariff
does not collect all costs of construction;
viii. a schedule of the Customer's best estimate for construction; and
ix. such other reasonable information that may be requested.
IV. Payment Required
on
1. Construction Advance
w The Company will determine facilities required to meet the distribution service
requirements of the Customer. Facilities in excess of those required to meet the distribution
service requirements of the Customer are outside the scope of this policy and may entail
wnt additional payments from the Customer.
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an
M.D.T.E.No. 997
Sheet 4
Cancelling M.D.T.E.No. 983-B
Policy 3
V. retaining ownership of transformer foundations and grounding systems,
and all secondary cables and conduit on private property, excluding
Company owned street lighting; and
vi. turning over ownership of the conduit system, excluding the secondary
conduit, to the Company upon inspection and acceptance of the conduit
40 system by the Company.
The Company may, at its discretion, construct the distribution line in segments,rather
OW
than all at once in the proposed development.
III. Customer Responsibilities
OW 1. Easements
The Company will require the Customer to provide the Company with easements, drafted
` by the Company, for all Company owned facilities located on private property.h• The Customer
will provide these easements prior to the start of the Company's construction and at no cost to
the Company.
00
2. Code Compliance
MW All construction must be in accordance with the Company's Construction Standards and
the "Information and Requirements for Electric Service" as published by the Company from time
to time and shall comply with codes and requirements of legally constituted authorities having
jurisdiction.
3. Environmental Permits
The Customer shall be responsible for obtaining any required environmental permits prior
to the start of construction.
4. Plans and Documentation
The Company may require the Customer to provide, in advance of engineering design and
at no cost to the Company,the following:
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M.D.T.E. No. 997
Sheet 3
Cancelling M.D.T.E.No. 983-B
Policy 3
i. developing the plan to provide underground electric service;
ii. supplying a list of approved manufacturers and their part numbers for
equipment to be supplied by the Customer;
ill. designating the location of all Company owned equipment, excluding
street lights, and the service entrance and meter location(s);
iv. providing Company owned street light foundations;
V. providing, installing, owning and maintaining all transformers,primary
cable,related primary equipment, Company owned street lights, and
meters;
Vi. making all connections to Company equipment; and
vii. inspecting the underground conduit system and equipment foundations
installed by the Customer, prior to backfilling.
00 The Customer,at no cost to the Company, shall be responsible for:
i. providing,prior to the start of the Company's construction, all applicable
documents required for the Company to prepare easements for its facilities
to be installed on private property;
OR ii. providing and installing all required foundations (except for Company
owned street light foundations),handholes, manholes, grounding systems,
secondary cable, and conduit including spacers, glue and pulling strings,
etc. as indicated on the Company's plan and related construction
documents;
iii. Installing foundations,provided by the Company, for Company owned
street lights;
*0 iv. supplying copies of all invoices, when requested, indicating manufacturer
and part number for all such equipment listed above; equipment that is not
approved shall not be used without the prior written consent of the
Company;
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40
M.D.T.E. No. 997
Sheet 2
Cancelling M.D.T.E.No. 983-B
Policy 3
II. Construction of Facilities
1. Line Extension on Public Way and Private Property
w 1 A. General
No distinction shall be made between line extensions on public ways or private property
except where specifically noted.
1 B. Overhead Line Extension
When overhead service is requested,the Company shall be responsible for:
i. installing, owning and maintaining all poles, primary and secondary wires,
transformers, service drops,meters, etc. that, in its opinion, are required to
provide adequate service;
ii. designating the location of all Company owned equipment, excluding
street lights, and the service entrance and meter location(s);
iii. blasting and tree trimming and removal along public ways; the Company
may charge the Customer the cost of such blasting and tree trimming and
removal if, in the Company's opinion, such cost is excessive.
The Customer, at no cost to the Company, shall be responsible for:
�a
i. blasting and tree trimming and removal on private property, including
roadways not accepted as public ways by the municipality, in accordance
air with the Company's specifications and subject to the Company's
inspection
The Company may, at its discretion, construct the distribution line in segments,rather
than all at once in the proposed development.
1 C. Underground Line Extension
When underground service is requested, the Company shall be responsible for:
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40
M.D.T.E.No. 997
Sheet 1
Cancelling M.D.T.E.No. 983-B
Policy 3
MASSACHUSETTS ELECTRIC COMPANY
NANTUCKET ELECTRIC COMPANY
TERMS AND CONDITIONS FOR DISTRIBUTION SERVICE
APPENDIX B
POLICY 3
LINE EXTENSION POLICY FOR COMMERCIAL AND INDUSTRIAL CUSTOMERS
oft I. Applicability
1. General
When a commercial or industrial Customer requests service for new or increased load, or
when a developer, contractor,builder or other entity("Customer")proposes to construct a
commercial or industrial development and no suitable distribution facilities exist,the terms of
this policy shall a PP 1 Y• For the purposes of this policy, commercial or industrial customers shall
include condominiums, apartments or mobile home complexes.
Additional information is contained in the Company's "Information And Requirements
For Electric Service"booklet and the Company's Terms and Conditions as filed with the
Massachusetts Department of Telecommunications and Energy.
s
2. Temporary Service
!* This policy shall not apply to lines constructed for temporary service. Temporary service
is defined in the Company's Terms and Conditions. The Company should be contacted
regarding the cost and availability of temporary service.
3. Street Lights
This policy shall not apply to street lights. All street light installations will be made in
accordance with the Company's street light tariffs approved by the Department of
Telecommunications and Energy. The Company should be consulted regarding street light rates,
costs and availability.
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4
$0 M.D.T.E.No. 997
Sheet 9
Cancelling M.D.T.E.No. 983-B
Policy 2
The Company may require the Customer to sign an agreement setting forth the terms of
this policy and any other terms that the Company deems are reasonably necessary in connection
with the installation to the Customer's homes or residential development,provided that such
terms are not inconsistent with the terms expressed in this policy.
The Company, at its sole discretion, may refuse the request for a line extension if
appropriate permits and easements cannot be obtained or if applicable codes and standards
cannot be met.
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Effective: May 1, 2000
wn
s
4
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M.D.T.E.No. 997
Sheet 8
Cancelling M.D.T.E.No. 983-B
Policy 2
The Company will provide a predetermined length of centerline feet per house lot free of
charge("Allowed Underground Distance Per House").
The "Total Allowed Underground Distance"for the development is equal to the number
of house lots times the "Allowed Underground Distance Per House".
The predetermined"Allowed Underground Distance Per House" can be located in
Appendix A, Schedule of Fees and Charges to the Company's Terms and Conditions.
go
D. Underground Installation Charge
If the total centerline feet within the development is greater than the"Total Allowed
Underground Distance", then there will be a charge to the Customer("Underground
Installation Charge").
The "Underground Installation Charge"will be equal to the "Underground Cost Per
Centerline Foot" times the number of centerline feet in excess of the"Total Allowed
Underground Distance".
The "Underground Installation Charge"shall be paid by the Customer in advance of the
Company's construction.
The"Underground Installation Charge"is non-refundable if the line is built.
3. Additional Advance Payments
The Company may, at its discretion, collect the full cost of construction, including the
cost of the "Total Allowed Overhead Distance" or the"Total Allowed Underground Distance".
At the request of the Customer the cost of either the "Total Allowed Overhead Distance" or the
"Total Allowed Underground Distance"will be returned, without interest, upon completion of
50% of the homes. No money will be returned after 5 years from the date of payment.
If the development is approved under the subdivision control law and there is a cost for
+! construction outside of the limits of the development,the Company may charge the Customer
this additional cost, including the Company's tax liabilities.
V. Line Extension Agreement
C:\E-Rates\Mass-May2000\TERMS4.WPD
M.D.T.E.No. 997
Sheet 7
Cancelling M.D.T.E.No. 983-B
Policy 2
If the total centerline feet within the development is greater than the "Total Allowed
Overhead Distance", then there will be a charge to the Customer("Overhead Installation
Charge").
The "Overhead Installation Charge"will be equal to the"Overhead Cost Per Centerline
ow Foot"times the number of centerline feet in excess of the"Total Allowed Overhead
Distance".
The"Overhead Installation Charge" shall be paid by the Customer in advance of the
Company's construction.
The "Overhead Installation Charge"is non-refundable if the line is built.
2. Underground Installation Charge
2A. Definition of Centerline Feet
For developments approved under the subdivision control law, G.L. c. 41, § 8 1 K et al,the
centerline foot as defined in the subdivision plan for all roadways within the
development, shall be included in the calculation of the centerline feet.
For developments not approved under the subdivision control law,the centerline feet will
be defined as the total distance of construction required.
Oft 2B. Underground Cost per Centerline Foot
The"Underground Cost Per Centerline Foot"will be a predetermined cost per centerline
foot calculated annually by the Company. This cost is located in Appendix A, Schedule
of Fees and Charges, to the Company's Terms and Conditions.
OR The"Underground Cost Per Centerline Foot" includes the Company's applicable tax
liability. The applicable tax liability includes the tax liability on material and labor
supplied by the Customer. The"Underground Cost Per Centerline Foot" is calculated
4W assuming all Company facilities terminate within 10 feet of the roadway.
2C. Total Allowed Underground Distance
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M.D.T.E.No. 997
Sheet 6
Cancelling M.D.T.E.No. 983-B
Policy 2
1. Overhead Installation Charge
IA. Definition of Centerline Feet
For developments approved under the subdivision control law, G.L. c. 41, § 8 1 K et al,the
centerline foot as defined in the subdivision plan for all roadways within the
development, shall be included in the calculation of the centerline feet.
For developments not approved under the subdivision control law,the centerline feet will
be defined as the total distance of construction required, excluding service drops.
1B. Overhead Cost per Centerline Foot
The "Overhead Cost Per Centerline Foot"will be a predetermined cost per centerline foot
calculated annually by the Company. The "Overhead Cost Per Centerline Foot"includes
'a the Company's applicable tax liability. This cost is located in Appendix A, Schedule of
Fees and Charges,to the Company' Terms and Conditions.
no The "Overhead Cost Per Centerline Foot"assumes that service points are in close
proximity to roadways. When this is not the case, when more than one span of wire is
required to reach the service point from the roadway, the Company reserves the right to
Or require the Customer to pay any excess costs to reach the service point.
1C. Total Allowed Overhead Distance
The Company will provide a predetermined length of centerline feet per house lot free of
charge ("Allowed Overhead Distance Per House").
The"Total Allowed Overhead Distance" for the development is equal to the number of
house lots times the"Allowed Overhead Distance Per House".
The predetermined"Allowed Overhead Distance Per House" can be located in
Appendix A, Schedule of Fees and Charges to the Company's Terms and Conditions.
1D. Overhead Installation Charge
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M.D.T.E.No. 997
Sheet 5
Cancelling M.D.T.E.No. 983-B
Policy 2
The Customer shall be responsible for obtaining any required environmental permits prior
to the start of construction.
4. Plans and Other Documents
The total number of house lots proposed to be constructed will be provided in advance to
the Company by the Customer, along with a complete copy of the subdivision plans approved by
the planning board in the municipality, if such is required by the municipality. The Company
need not begin design work prior to receipt of the approved plans.
The Company may require the Customer to provide, in advance and at no cost to the
Company, the following:
i. a copy of the approval of the planning board for the subdivision;
ii. a copy of all permits and approvals that have been obtained for constructing the
development;
iii. easements, drafted by the Company, for all facilities required to serve the
development;
iv. the name and address of the financial institution providing financing for the
development, including a contact person and phone number;
V. a copy of a street light proposal for the development, approved by the
municipality, or written notice from the municipality that street lighting will not
be required; if installation is requested after construction is complete, additional
costs, including the Company's tax liabilities, may be borne by the municipality
and/or Customer if the tariff does not collect all costs of construction;
Vi. a schedule of Customer's best estimate for the construction of homes in the
development; and
4* vii. such other reasonable information that may be requested to confirm the viability
of the development.
IV. Payment Required
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M.D.T.E.No. 997
Sheet 4
Cancelling M.D.T.E. No. 983-B
Policy 2
iii. installing foundations, provided by the Company, for Company owned
street lights;
�w iv. supplying copies of all invoices, when requested, indicating manufacturer
and part number for all such equipment listed above; equipment that is not
approved shall not be used without the prior written consent of the
Company;
V. installing, owning, and maintaining all secondary services and service
conduit from the Company's equipment to each designated meter location;
and
4ft vi. turning over ownership of the conduit system, excluding the service
conduit, to the Company upon inspection and acceptance of the conduit
system by the Company.
O
The Company may, at its discretion,construct the distribution line in segments,rather
than all at once in the proposed development.
III. Customer Responsibilities
40 1, Easements
The Company will require the Customer to provide the Company with easements,drafted
by the Company, for all Company owned facilities located on private property. The Customer
will provide these easements prior to the start of the Company's construction and at no cost to
the Company.
OW
2. Code Compliance
o All construction must be in accordance with the Company's Construction Standards and
the "Information and Requirements for Electric Service" as published by the Company from time
to time and shall comply with codes and requirements of legally constituted authorities having
O jurisdiction.
3. Environmental Permits
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A�
■
M.D.T.E.No. 997
Sheet 3
Cancelling M.D.T.E. No. 983-B
Policy 2
The Company may, at its discretion, construct the distribution line in segments, rather
than all at once in the proposed development.
04
1 C. Underground Line Extension
The Company shall be responsible for:
i. developing the plan to provide underground electric service;
ii. supplying a list of approved manufacturers and their part numbers for
equipment to be supplied by the Customer;
iii. designating the location of all Company owned equipment, excluding
street lights, and the service entrance and meter location(s);
iv. providing Company owned street light foundations;
Wk V. providing, installing, owning and maintaining all transformers, Company
owned street lights,primary and secondary cable, except services;
vi. making all connections to Company equipment; and
ON
vii. inspecting the underground conduit system and equipment foundations
installed by the Customer,prior to backfilling.
The Customer,at no cost to the Company, shall be responsible for:
i. providing,prior to the start of the Company's construction, all applicable
documents required for the Company to prepare easements for its facilities
to be installed on private property;
ii. providing and installing all required foundations (except for Company
owned street light foundations),handholes,manholes, grounding systems,
and conduit including spacers, glue and pulling strings, etc. as indicated on
the Company's plan and related construction documents;
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FA
M.D.T.E.No. 997
Sheet 2
Cancelling M.D.T.E. No. 983-B
Policy 2
This policy shall not apply to street lights. All street light installations will be made in
accordance with the Company's street light tariffs approved by the Department of
Telecommunications and Energy. The Company should be consulted regarding street light rates,
costs and availability.
II. Construction of Facilities
1. Line Extension on Public Way and Private Property
IA. General
No distinction shall be made between line extensions on public ways or private property
except where specifically noted.
1 B. Overhead Line Extension
The Company shall be responsible for:
i. installing, owning and maintaining all poles,primary and secondary wires,
transformers, service drops,meters, etc. that, in its opinion, are required to
provide adequate service;
err
ii. designating the location of all Company owned equipment, excluding
street lights, and the service entrance and meter location(s) at each house;
and
iii. blasting and tree trimming and removal along public ways; the Company
may charge the Customer the cost of such blasting and tree trimming and
removal if in the Company's opinion such cost is excessive.
The Customer, at no cost to the Company, shall be responsible for:
i. blasting and tree trimming and removal on private property, including
roadways not accepted as public ways by the municipality, in accordance
with the Company's specifications and subject to the Company's
inspection.
C:\E-Rates\Mass-May2000\TEP,MS4.WPO
■ M.D.T.E.No. 997
Sheet 1
Cancelling M.D.T.E. No. 983-B
Policy 2
MASSACHUSETTS ELECTRIC COMPANY
NANTUCKET ELECTRIC COMPANY
TERMS AND CONDITIONS FOR DISTRIBUTION SERVICE
APPENDIX B
POLICY 2
LINE EXTENSION POLICY FOR RESIDENTIAL DEVELOPMENTS
1. Applicability
1. General
When a developer, contractor,builder or other entity other than an individual residential
customer("Customer")proposing to construct individual homes or a residential development of
single family or duplex homes, requests that distribution lines be constructed to serve the homes
or development and no suitable distribution facilities exist, the terms of this policy shall apply.
This policy applies to a Customer whenever it is building more than one single family or duplex
home.
40 This policy provides for standard single phase residential service. Service above and
beyond standard residential service may result in additional cost to the Customer. Additional
information is contained in the Company's "Information And Requirements For Electric Service"
booklet and the Company's Terms and Conditions as filed with the Massachusetts Department of
Telecommunications and Energy.
2. Temporary Service
This policy shall not apply to lines constructed for temporary service. Temporary service
!* is defined in the Company's Terms and Conditions. The Company should be contacted
regarding the cost and availability of temporary service.
3. Street Lights
CAE-RatesWass-May2000\TERMS4.WPD
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Appendix G
Massachusetts Electric Company
Line Extension Policies
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Tighe&Bond
SUMMARY
• The available fire flow of 1,800 gpm (peak hour demand with the water main crossing
the Mill River out of service) is sufficient to accommodate the needed fire flow for the.
residential buildings, which is not expected to exceed 1,500 gpm.
• The available fire flow of 1,800 gpm (peak hour demand with the water main crossing
the Mill River out of service) is also sufficient to accommodate the needed fire flow for
the commercial/light industrial buildings, which is not expected to exceed 1,500 gpm.
• The capacity of the existing water distribution system is adequate to meet the static
pressure requirements and the anticipated water demands under full build-out conditions
under both proposed design conditions (i.e. 12-inch Mill River main kept in-service or
taken out-of-service). Therefore, the off-site municipal water supply system does not
require any additional improvements to serve this project. The proposed construction
of water utilities for full build-out is expected to be limited to on-site systems to serve
the proposed development sites.
• Because it has been determined that the 12-inch Mill River main is not required to
provide adequate water supply to the full-build project, it may be taken out-of-service
through proper abandonment procedures, if so desired.
• The key existing sewers downstream of the proposed connection points from the
Village at Hospital Hill have sufficient surplus hydraulic capacity to accommodate the
projected full build-out peak flows.
,w • The sewers that were CCTV inspected were observed to be in generally good physical
condition. As such, off-site improvements to the existing City sewerage system are not
expected to be necessary to accommodate the proposed development.
• Significant off-site improvements to the existing private utility systems are not expected
to be necessary to accommodate the proposed development
J:\N\N0501\Technical Memo\Tech Memo 2(utdities).doc
P
-16-
On"ginal printed on recycled paper.
Rw
T4w&Bond
The Village at Hospital Hill
l�!lA
• Opinion
' Cable/High Speed Internet Service(Comcast)
Length(ft) Unit Cost/Linear Foot Subtotal
Underground cable including services only to the edge of the
right-of-way. Assumes Comcast provides their conduit and the 13,000 $5 $65,000
developer is responsible for trenching and conduit installation.
However,Comcast's conduit can be installed in the same trench 20%contingency $13,000
as the electrical duct bank.
Total $78,000
` ! Telephone Service(Verizon) Length(ft) Unit Cost/Linear Foot Subtotal
Underground telephone including services only to the edge of the
right-of-way. Assumes Verizon provides their conduit and 13,000 $10 $130,000
installation. The developer is responsible for trenching.
Verizon's conduit is installed in a trench separate from the 20%contingency $26,000
electric.
Total $156,000
Underground Electric Service(Mass Electric)
Length(ft) Unit Cost/Linear Foot Subtotal
Underground electric including secondary services only to the
edge of the right-of-way. 13,000 $120 $1,560,000
20%contingency $312,000
Total $1,872,000
Natural Gas Service(Baystate Gas)
Length(ft) Unit Cost/Linear Foot Subtotal
Underground natural gas including services only to the edge of
the right-of-way. 13,000 $60 $780,000
20%contingency $156,000
Total $936,000
MA!
J:\N501\Report\Utility Estimates.xis
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All utility distribution systems, public or private, shall be placed underground (bold
added by Tighe & Bond for emphasis).
8:18 Utility Installation
The installation of public utilities shall conform to the standards in the following
sections.
1. The applicant shall employ, at his own expense, an engineer to set all lines and
grades in a manner satisfactory to the Planning Board.
" 2. All utility lines shall be installed with the minimum cover as shown in §7:01(6).
3. Sewers shall be laid to true line and grade.
qft
4. Electric, telephone, cable TV, fiber optic, and all other conduits shall be installed
underground beneath the grass strip with a minimum cover, as shown in §7:01(6)
(bold added by Tighe & Bond for emphasis).
5. Width of trench at the pipe on conduit shall be equal to four thirds (413) diameter of
' the pipe of conduit, plus eighteen (18) inches.
6. Sheeting shall be used, whenever necessary, upon the direction of the Engineer and
OR in conformance with relevant provisions of Section 950 of the Standard Specifications.
7. Pipe and conduits shall be surrounded by six (6) inches of compacted screened
gravel if set in earth, and twelve (12) inches if set in rock. In rock, clay, or peat
excavation, trenches shall be excavated to a depth of twelve (12) inches or more below
the bottom of any water pipe, storm drain, or sewer and filled with bank-run or select
gravel, whichever is approved by the City Engineer.
8. Back-fill shall be compacted to ninety (90) percent of the maximum dry density of the
material as determined by the American Association of State Highway Officials,
Designation T-180D.
9. The water and sanitary sewer systems shall be tested and approved prior to
installation of base course(s) and pavement.
10. All lot connections shall be installed to the right-of-way line, and marked or
surveyed so as to be easily located in the future.
In Table 7 we have developed an "order of magnitude" opinion of probable construction cost
for the subsurface installation of the private utilities described above.
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Under the "Massachusetts Electric Line Extension Policies"' for underground services to new
developments, the developer is responsible for providing and installing all equipment
foundations, handholes, manholes, vaults, grounding systems, and conduit. MECo is
responsible for design of the underground distribution system, furnishing and installing
transformers and cable, and inspection of the distribution system prior to backfilling.
0
A "per foot" fee is assessed by Massachusetts Electric for their portion of the underground
electric work in residential subdivisions. An individual, project-specific fee is calculated for
so commercial or industrial development extensions. Since the Village at Hospital Hill consists of
both residential and commercial development, it is anticipated that a project-specific fee for
MECo's portion of the work will be negotiated. Representatives from MECo have expressed
an interest in meeting to discuss service to the development.
The opinion of probable costs for on-site underground electric installation is based on upon a
' similar underground electric utility installation in a downtown Holyoke residential
development, and the following assumptions:
Electric infrastructure is only installed to the edge of the right-of-way (i.e. no
individual services are included).
' Baystate Gas Company
In 2002, pursuant to the ongoing Route 66 reconstruction project, Baystate Gas Company
(BGC) replaced the 4-inch diameter natural gas main in Route 66 between the Northampton
State Hospital properties with an 8-inch main. Recent pavement markings and design plans for
the reconstruction project indicate three existing gas services extended to the Northampton
State Hospital properties, one service to the northern parcel and two to the southern parcel.
Based on the installation of the new 8-inch diameter main in Route 66, service to the
development is not anticipated to be a problem.
Gas main extensions for subdivisions are typically installed by BGC or subcontractors hired by
BGC with the costs borne by the developer. Services to individual properties or residencies
are generally installed free of charge.
The opinion of probable costs for on-site natural gas main installation is based on upon a
similar natural gas main installation in a Holyoke development, and the following assumptions:
• Natural gas infrastructure is only installed to the edge of the right-of-way (i.e. no
individual services are included).
Opinion of Probable Construction Costs
The RULES AND REGULATIONS GOVERNING THE SUBDIVISION OF LAND IN THE
CITY OF NORTHAMPTON, MASSACHUSETTS state the following:
8:17 Underground Utility Systems
' See Appendix G.
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• Comcast's conduit is installed within the electric trench during installation of the
electric conduits,
• CATV infrastructure is only installed to the edge of the right-of-way (i.e. no individual
services are included).
�i
Verizon (Telephone)
Currently, the telephone communications infrastructure along Route 66 adjacent ' to the
Northampton State Hospital site is pole-mounted overhead. Based upon the conceptual layout,
Verizon has indicated that some off-site improvements may be necessary to accommodate the
'10 development.
With respect to on-site underground telephone, Verizon will supply the materials for their
system at no charge. Depending on the project, Verizon indicated that they may hire a
separate contractor to trench and install the telephone infrastructure, or they may supply the
materials to be installed by the developer's site work contractor. However, it should be noted
that Tighe & Bond's experience on a recent subdivision project in Holyoke was that Verizon
was reluctant to have their conduit installed within the same trench as the primary electric
ducts for the development and a separate trench was necessary for their infrastructure.
Quentin Antes of Verizon (413-247-3136) indicated they would be interested in attending a
coordination meeting to discuss the project and Verizon's infrastructure further.
The opinion of probable costs for on-site underground telephone installation is based on a
recent subdivision project in Holyoke, conversations with Verizon, and the following
assumptions:
• Verizon provides their materials at no cost,
• Verizon's conduit is installed in a separate trench independent of the primary
underground electric duct,
• Telephone infrastructure is only installed to the edge of the right-of-way (i.e. no
individual services are included).
Massachusetts Electric Company
Based upon an on-site inspection and conversation with Peter Normandin (413-582-7514) of
MECo, it was determined that the electric lines along Route 66 adjacent to the Northampton
State Hospital site are pole-mounted overhead with the exception of one drop on the northwest
Oft side of the Prince Street/Chapel Street intersection. The underground electrical service feeds a
transformer located in front of the Haskell Building and does not cross Route 66. Based on the
conceptual site plan, Massachusetts Electric does not anticipate the need for major upgrades to
!! the current infrastructure in Route 66 to be able to serve the proposed development. Three-
phase power is available along Route 66 adjacent to the Northampton State Hospital property.
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Sewer Condition -The key gravity sewers on Earle Street and West Street, as well as
approximately 1,500 feet of the 18-inch interceptor, were inspected by closed circuit television
(CCTV) on October 29 and November 12, 2002 in order to ascertain their condition. The
CCTV inspections indicated that the existing pipes are generally in good physical condition
with observed pipe defects isolated to three locations described as follows:
• Root intrusion at a manhole on Earle Street,
• Corrosion of a 10-foot long pipe section on Earle Street, and
• Corrosion at the ends of the cast iron Mill River siphon.
Conclusions
The key existing sewers downstream of the proposed connection points from the Village at
0 Hospital Hill have sufficient surplus hydraulic capacity to accommodate the projected full
build-out peak flows.
In addition, the sewers that were CCTV inspected were observed to be generally in good
physical condition. As such, improvements to the existing City sewerage system are not
expected to be necessary to accommodate the proposed development.
PRIVATE UTILITIES
Comcast (Cable Television)
Currently, the cable television (CATV) infrastructure along Route 66 adjacent to the
Northampton State Hospital site is pole-mounted overhead. Comcast does not anticipate the
need for major upgrades of the Route 66 infrastructure to accommodate the future Hospital Hill
development.
Typically, Comcast supplies new developments with the necessary materials (conduits) for
their proposed underground system. The conduit is then installed during installation of the
underground electric duct bank. All excavation, backfilling, and conduit installation is
typically performed by Massachusetts Electric Company (MECo), or a contractor hired by the
developer to excavate for MECo. Comcast then installs all wiring and junction boxes within
the right-of-way at no cost to the developer. Joe Chafer of Comcast (413-587-0211) indicated
that they would be interested in attending a coordination meeting to discuss the project and
Comcast's infrastructure further.
The opinion of probable costs for on-site underground CATV installation is based upon a
recent subdivision project in Holyoke, conversations with Comcast, and the -following
assumptions:
• Comcast provides their materials at no cost,
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elevation, pipe length, pipe configuration, and internal surface roughness. Record plans of the
siphons were used to determine pipe diameter, length, configuration, and elevation. The pipe
roughness was assumed to be 100 for this evaluation, which is considered to be a reasonably
conservative value. The siphon hydraulic capacity calculations are also detailed in Appendix
F.
Current peak wastewater flows in the key existing sewers downstream of the proposed
development sites were estimated using wastewater flow data collected from November 14 to
November 20, 2002 by portable flow meters installed on Earle Street, West Street and Clark
Street, as shown below in Table 5.
Table 5
Flow Meter Summary
' ► Peak Wastewater
Meter Location Flow (mgd)
1 182 Earle Street, just south of West Street 0.187
2 126 West Street, east of the Mill River siphon, on the 18-inch interceptor 0.274
3 53 Clark Street, east of Meter 2 on the 18-inch interceptor 0.289
A significant storm occurred during this flow monitoring period, on November 17, 2002. A
total of 1.52 inches of rainfall was recorded at the National Weather Service station in
Westfield on this day. The peak wastewater flow measured by each flow meter during this
rain event is presented in Table 5 and reflects infiltration/inflow impacts. These were the
highest flows recorded during the monitoring period. Note that the flow data was reported in
15-minute time increments and that the flow peaks measured are over a 15-minute time
interval.
In order to determine the surplus hydraulic capacity of the key sewers downstream of the north
campus site, the peak sewer flows measured by Meter 1 (located just south of West Street on
Earle Street) and Meter 2 (located just downstream of the siphon) were compared to the
hydraulic capacity of the sewers from Prince Street to the 18-inch interceptor. Note that the
existing peak wastewater flow on Prince Street was estimated by subtracting the Meter 1 peak
flow from the Meter 2 peak flow.
In order to determine the surplus capacity of the key sewers downstream of the south campus
site, the peak sewer flows measured by Meter 1 and Meter 2 were compared to the hydraulic
capacity of the sewers from Earle Street to the 18-inch interceptor.
The calculated sewer capacities have been compared to the projected peak flows at full build-
' out in Table 6 (on the following page). This table illustrates that there is sufficient surplus
hydraulic capacity within each sewer segment reviewed to accommodate the projected peak
wastewater flows from the Village at Hospital Hill Development.
The Meter 2 and Meter 3 flow data confirms that there is significant surplus capacity in the 18
inch interceptor. Even during peak flow conditions, the flow depth did not exceed 5 inches in
the 18-inch pipe at either metering site.
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Pipe condition was determined through a television inspection program conducted in November
2002.
Surplus Hydraulic Capacity - The proposed development on the north campus site is expected
to be served by the gravity sewer on the north side of Prince Street, which starts as an 8-inch
diameter pipe near the intersection with Route 66 and increases in size to 12-inch diameter
approximately 100 feet west of Earle Street. The wastewater flow from the Prince Street
sewer is conveyed to the 12-inch diameter West Street gravity sewer, which increases in size to
` 14-inch diameter at the intersection with Paquette Avenue. The West Street sewer conveys
wastewater flow to a 260-foot long siphon that extends below the Mill River. The siphon is
10-inch diameter for the first 150 feet and then 12-inch diameter for the remaining 110 feet.
!! The wastewater flow from the siphon discharges into an 18-inch interceptor sewer on the east
side of the river. The existing sewers described above are shown in Figure 2. Note that a
section of new 12-inch gravity sewer is being installed as part of the Route 66 roadway
e improvements project currently underway and has been considered in the above description.
A second 8-inch sanitary sewer extends north of the north campus site and connects to the
intersection of a 30-inch and 36-inch trunk line on the north side of the Mill River via a
siphon. For the purposes of this evaluation, we have assumed that wastewater from the
proposed development on the north campus site will not use the 8-inch sewer north of the site
and will be directed only to the 8-inch sewer on Prince Street.
The wastewater flow from the Ice Pond site would be conveyed by the 8-inch diameter gravity
sewer on Rocky Hill Road, the 8-inch diameter gravity sewer on Grove Street, and the 8-inch
and 12-inch diameter gravity sewers on Earle Street. The Earle Street gravity sewers would
subsequently convey the wastewater flow westerly to the West Street sewer and the
" ` downstream siphon described above. The wastewater flow from the proposed development on
the south campus site would be conveyed by the 12-inch gravity sewer on Earle Street and the
downstream West Street gravity sewer and Mill River siphon, similar to the Ice Pond site. The
' existing sewers that would serve the Ice Pond and south campus sites are also shown in Figure
2.
We have assumed that the 18-inch diameter interceptor sewer downstream of the Mill River
siphon and the existing sewers downstream of the interceptor have adequate capacity to
accommodate the peak wastewater flow from the proposed development. The capacity of the
18-inch interceptor was reviewed using the sewer flow monitoring data described later in this
` technical memorandum.
For the gravity sewers, full-pipe capacities were estimated using the Manning Equation, which
is commonly used to calculate gravity pipe flow from pipe diameter, slope and internal surface
roughness. Recent survey data, sewer record plans, and Massachusetts Highway Department
(MHD) plans for improvements on Route 66 were used to obtain information on pipe diameter
and slope. The pipe roughness was assumed to be 0.013, which is a conservative value
commonly used for this type of evaluation. The gravity sewer hydraulic capacity calculations
are detailed in Appendix F.
For the Mill River siphon, the full-pipe capacity was calculated using the Hazen-Williams
equation, which is commonly used to calculate pressure pipe flow from pipe diameter, pipe
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staff, and the City regularly conducts leakage repair and lining of problematic segments of
pipe.
Projected Wastewater Flows
The sewer collection system in the vicinity of the Northampton State Hospital property is
shown in Figure 2 in Appendix D.
The projected wastewater flow rates for the proposed development are based on the estimated
occupancy of the residential dwelling units and staffing of the commercial buildings. We have
assumed that three people will occupy each single-family residential dwelling unit and that one
person will occupy each assisted living residential dwelling unit. In addition, we have assumed
that there will be 3 employees per 1,000 square feet of commercial/light industrial space.
A per capita wastewater flow rate of 100 gallons per day has been used in this evaluation for
the residential dwelling units. This conservative per capita flow rate includes an allowance for
infiltration, which is typically a small value for new sewer piping. A wastewater flow rate of
20 gallons per day per employee has been used for the commercial/industrial buildings.
The estimated Phase I, Phase II, and full build-out (Phase I + Phase II) wastewater flows are
presented in Tables E-1, E-2 and E-3 in Appendix E for the north campus, the south campus,
and the Ice Pond sites, respectively. These tables include both the estimated average daily
flows and peak wastewater flows from the three proposed development sites. The peak
wastewater flows were determined using Technical Report No. 16, Guides for the Design of
Wastewater Treatment Works, 1998 edition, prepared by the New England Interstate Water
Pollution Control Commission (commonly referred to as TR-16), which is often used as a
guide for this type of work. A peaking factor of approximately 5.6 was determined using TR-
16, based on the projected average daily flows.
The full build-out peak wastewater flows are summarized below in Table 4:
Table 4
Peak Wastewater Flows from the Village at Hospital Hill Development (gpd)
North Campus South Campus Ice Pond Site Total
Phase 1 186,500 47,700 0 234,200
Phase II 209,400 65,200 43,700 318,300
Full Build-Out 1 395,900 1 112,900 43,700 552,500
Evaluation of Existing Sewers
The surplus hydraulic capacity and condition of the key sewers downstream of the proposed
go north campus and south campus development sites were determined in this evaluation. The
sewers directly downstream of the Ice Pond site were not reviewed as part of this evaluation
although the wastewater flows from the Ice Pond site were considered in evaluating the piping
downstream of the north and south campus sites. Surplus hydraulic capacity was determined
for the key sewers by comparing full-pipe capacities to the estimated peak wastewater flows.
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available fire flow of 1,800 gpm (peak hour demand with the water main crossing the Mill
River out of service) is sufficient to accommodate the needed fire flow for the residential
buildings, which is not expected to exceed 1,500 gpm. If sprinkler systems are proposed for
some of the residential buildings, then the needed fire flow values will be reduced.
For the commercial and light industrial buildings, which are expected to be equipped with
sprinkler systems for fire protection, the National Fire Protection Association (NFPA)
Standard for the Installation of Sprinkler Systems (NFPA 13) has been used to estimate needed
"! fire flows. For these buildings, the needed fire flows are essentially the flows needed to meet
the building sprinkler system and hose stream demands. It is important to note that the needed
fire flow values can vary greatly based on factors that include, but are not limited to:
occupancy classification, type of construction, type of material stored, how material is stored,
degree of fire resistance, sprinkler types, and portion of building that is sprinklered.
For this evaluation, the needed fire flow is conservatively estimated to range from 850 to 1,500
gpm at a residual pressure of 50 psi at the highest sprinkler elevation, based on the Pipe
Schedule Method described in NFPA 13 and assuming an Ordinary Hazard occupancy
classification. When sprinkler system piping headloss is considered, the residual pressure at
the street level is estimated to be approximately 60 psi. Through this evaluation it was
determined that the available fire flow of 1,800 gpm (peak hour demand with the water
main crossing the Mill River out of service) is also sufficient to accommodate the needed
fire flow for the commercial/light industrial buildings, which is not expected to exceed
i 1,500 gpm. It is likely that the needed fire flow can be reduced from the range presented
above through a more detailed design of the building sprinkler systems, once more detailed
information on building sizes, construction, occupancy and material to be stored has been
determined.
Conclusions
Under both conditions (i.e. 12-inch Mill River main kept in-service or taken out-of-service) the
capacity of the existing water distribution system is adequate to meet the static pressure
requirements and the anticipated water demands under full build-out conditions. Therefore,
the off-site municipal water supply system does not require any additional improvements to
serve this project. The proposed construction of water utilities for full build-out is expected to
be limited to on-site systems to serve the proposed development sites.
Since it has been determined that the 12-inch Mill River main is not required to provide
' adequate water supply to the full-build project, it may be taken out-of-service through proper
abandonment procedures, if so desired.
SEWER
Northampton's wastewater is treated at the municipal plant on Hockanum Road. The`treatment
plant is an activated sludge plant, which provides secondary treatment for 4.5 mgd (average
daily flow). Design capacity is 8.7 mgd. The City expanded the plant in 1999 (diffused air
process, gravity belt thickener, sludge storage tanks.) It has no present plans for further
expansion. There is an ongoing program to address Infiltration and Inflow, with full-time
O
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Fire Flow Considerations - The amount of flow available to fight a fire is an important
consideration in reviewing the adequacy of a water distribution system to serve a particular
*0 area. For this evaluation, the amount of flow available to fight a fire ("available fire flow")
has been estimated using the computer model of the Northampton water distribution system
described previously. The available fire flow values were compared to the flows required to
40 fight a fire ("needed fire flows") at the north and south campus sites. If the available fire flow
is greater than the needed fire flow (while minimum pressures are maintained), than the system
Owl is considered adequate under the conditions evaluated.
For the purposes of this evaluation, we have assumed that the commercial/light industrial
buildings will be equipped with sprinkler systems for fire protection while the residential
buildings will be unsprinklered.
r
Available Fire Flows - Available fire flows for the north and south campus sites were
estimated using the water distribution system computer model, under full build-out maximum
day water demand conditions. Available fire flows are typically determined by calculating the
maximum possible water demand at the desired location while maintaining a minimum pressure
of 20 psi throughout the remainder of the distribution system. This approach was used in this
evaluation. The available fire flow was determined to be approximately 3,500 gpm at both the
north and south campus sites with the water main crossing the Mill River in service. In
comparison, with the water main crossing the Mill River out of service, the available fire flow
was determined to be approximately 3,000 gpm at both the north and south campus sites.
For the purposes of this evaluation, we have assumed that a residual pressure of approximately
60 psi will be necessary at the street level in order to serve the buildings that will be equipped
« f with sprinkler systems. As such, the available fire flows were also estimated at a residual
pressure of 60 psi and are summarized in Table 3 below.
Table 3
Available Fire Flows in Area of Proposed Development
Development Fire Flow at 60 psi Residual Pressure (gpm)
Site With Mill River Water Main in Service Without Mill River Water Main in Service
North Campus 3,200 1,800
South Campus >3,500 >3,000
Needed Fire Flows - For the unsprinklered residential buildings, needed fire flow can be
estimated using Insurance Services Organization (ISO) guidelines. In this case, needed fire
flow is a function of the building size, building construction, type of occupancy and use, and
the proximity of the building to other buildings and structures. The ISO guidelines indicate
that needed residential fire flows typically range from 500 to 1,500 gpm, at a 20 psi residual
pressure, for 1- and 2-family dwellings not exceeding 2 stories in height.
Using ISO methodology, the needed fire flow was calculated specifically for the typical 3-
family, 3-story residential unit at the north campus site. The calculated value of 1,250 gpm
was within the 500 to 1,500 gpm range. Through this evaluation it was determined that the
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has confirmed that the City's water supply is expected to be adequate to supply the full build-
out demand of the proposed development.
The City's water distribution system in the area of the proposed development was evaluated to
determine whether it has sufficient capacity to accommodate the anticipated water demands. A
computer model of the Northampton water distribution system, originally developed by the
City using the software WaterCAD, was used to determine static pressures and fire flow rates
in the area of the proposed development under full build-out conditions. Two operating
scenarios were considered: 1) the 12-inch water main that crosses under the Mill River is kept
in-service, and 2) the 12-inch water main that crosses under the Mill River is taken out-of-
service.
Figure 1 in Appendix A shows the critical water mains in the vicinity of the Northampton State
Hospital property used in the water distribution system analysis. The City's water distribution
system model was modified to include the recent water main improvements on Route 66 and
the critical water mains located on the Northampton State Hospital property. We have
assumed that new water mains would be installed on the north and south campus sites to serve
the proposed development but that the 10-inch water main from Grove Street to the south
campus and the 12-inch Mill River main serving the north campus would be retained. A
schematic of the skeletonized water distribution system in the area of the proposed
development used for the model is included in Appendix C.
This evaluation only focuses on the flows and pressures at the north and south campus sites and
does not address the adequacy of the water distribution system at the Ice Pond site.
Water System Pressures - Water system pressures in the area of the proposed development
were evaluated under peak hour demand conditions, with and without the 12-inch water main
crossing the Mill River in service. As shown in Figure 1, it was assumed that water would
be drawn from two nodes, one located on the north campus site and the other located on the
south campus site. The total project demand was divided equally between the two nodes. The
results are summarized below in Table 2.
Table 2
Water Distribution System Pressures in Area of Proposed Development
Development Water Distribution System Pressure (psi)
Site With Mill River Water Main in Service Without Mill River Water Main in Service
North Campus 76 74
South Campus 89 88
The water pressures shown in Table 2 indicate that the distribution system has sufficient
capacity to supply the peak hour water demand while still maintaining an adequate system
pressure (typically 70 psi to 100 psi), even if the Mill River water main is out of service. The
predicted water pressures are significantly higher than the minimum residual of 35 psi that is
40 required by the State under non-fire flow conditions.
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The Ice Pond site would be served by a 12-inch City water main on Rocky Hill Road (Route
66). Note that the 12-inch water main from the Ice Pond site easterly to the Mill River on
Route 66 is being installed by the Massachusetts Highway Department (MHD) as part of the
Route 66 improvements project, currently underway, to replace the older water mains on this
street.
Projected Water Demand From the Proposed Development
The projected water demand for the proposed development is based on the estimated
occupancy of the residential dwelling units and staffing of the commercial buildings. We have
assumed that three people will occupy each single-family residential dwelling unit and that one
person will occupy each assisted living residential dwelling unit. In addition, we have assumed
that there will be 3 employees per 1,000 square feet of commercial/light industrial space.
A per capita water demand of 100 gallons per day has been used in this evaluation for the
r residential dwelling units. This residential water demand rate is commonly used for planning
purposes. A water demand of 20 gallons per day per employee has been used for the
no i commercial/industrial buildings.
Based on a review of water demand data collected by the City from 1997 to 2000, the ratio of
maximum day demand to average day demand was determined to be approximately 1.6. The
ratio of peak hour demand to average day demand was estimated as approximately 2.5, based
on similar size water systems.
The estimated Phase I, Phase II, and full build-out (Phase I + Phase II) water demands are
presented in Tables B-1, B-2 and B-3 in Appendix B for the north campus, the south campus,
i and the Ice Pond sites, respectively. These tables include the estimated average day demands,
ymaximum day demands, and peak hour demands for the three proposed development sites.
The full build-out average day, maximum day and peak hour demands for the proposed
development are summarized below in Table 1. In addition, the impact on the overall City
water demands are also shown.
Table 1
Current and Projected Future Water Demands
Demand Current Demands Proposed Development Projected Future Demands with
Condition (mgd) Demands (mgd) Proposed Development(mgd)
Avg. Day 3.60 0.10 3.70 c2i
Max. Day 4.60 0.16 4.76
Peak Hour 9.000) 1 0.25 9.25
Notes: (1) Estimated peak hourly flow, based on a ratio of peak hourly demand to average day demand of 2.5.
(2) The City's permitted water supply withdrawal rate is 4.77 mgd.
The projected future average day water demand of 3.70 mgd is well below the City's permitted
water supply withdrawal rate of 4.77 mgd, indicating that the City's water supply is sufficient
to accommodate the proposed development. The Northampton Department of Public Works
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Am
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.w
Tighe&Bond
1. The Village at Hospital Hill Phase One Report, EOEA #12629, dated April 30, 2002
and prepared by Epsilon Associates, Inc. in association with Vanasse & Associates,
Inc., Tighe & Bond, and Arrowstreet, Inc.
2. The Village at Hospital Hill Draft Environmental Impact Report, EOEA #12629, dated
- April 2003 and prepared by Epsilon Associates, Inc. in association with Vanasse &
Associates, Inc., Tighe & Bond, and Arrowstreet, Inc.
3. Technical Memorandum # 1, Syphon Capacity Evaluation, Route 66 at Mill River,
Northampton, Massachusetts, dated March 21, 2003 and prepared by Tighe & Bond.
,A For information related to private utilities, representatives from the applicable utility company
were contacted by telephone.
The Village at Hospital Hill Development is proposed in two phases. In Phase I, 109
residential dwelling units and 152,000 s.f. of commercial and light industrial development are
' proposed. In Phase II, 98 residential dwelling units, 80 assisted living dwelling units, and
324,000 square feet of commercial and light industrial development are proposed.
Our water and sewer evaluations make limited reference to the Ice Pond site that is located
oaf approximately one mile west of the main site, along Route 66. Although part of the former
Northampton State Hospital, the Ice Pond site is not considered part of the Village at Hospital
Hill.
WATER
i
The City of Northampton water system is supplied from the West Whately, Mountain Street,
's''i and Francis P. Ryan Reservoirs via two transmission mains. The Ryan Reservoir spillway
I discharges into the West Whately Reservoir and flow from the West Whately Reservoir
discharges to the Mountain Street Reservoir via a gravity flow main and brook. A 4.1-mile
j long, 20-inch diameter main carries water to Northampton from the Mountain Street
Reservoir, and a 3.7-mile 36-inch main carries water from the Ryan Reservoir.
*w Distribution System Description
The water distribution system in the vicinity of the Northampton State Hospital property is
shown in Figure 1 in Appendix A. The north campus site is currently served by a 10-inch
water main that loops around the existing buildings on this portion of the State Hospital
property. A 12-inch water main connects the north campus pipe loop to the 12-inch City water
"MI main on West Street (Route 66). In addition, a 12-inch water main crossing the Mill River
connects the north campus pipe loop to a 16-inch City water main north of the site on Federal
Street.
The south campus site is currently served by 6-inch and 10-inch water mains that are located
east and south of the existing buildings on this portion of the State Hospital property. A 10-
inch water main connects the south campus piping to the 12-inch City water main on Prince
Street (Route 66) and a 10-inch main connects the south campus piping to the 10-inch City
water main on Grove Street.
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N-501
Technical Memorandum #2
I To: Michael J. Dryden, R.L.A.
Beals and Thomas
From: Francis J. Hoey, P.E.
David J. Partridge, P.E.
Date: June 13, 2003
Re: Village at Hospital Hill - Infrastructure Assessment
BACKGROUND
The Village at Hospital Hill is a joint public-private redevelopment project, which has resulted
from years of effort by the Commonwealth, the City of Northampton, elected officials,
advocates, and concerned citizens, to provide a forward-looking, economically viable use of
the core campus of the former Northampton State Hospital (NSH), situated on a prominent
hilltop west of downtown Northampton, Massachusetts.
The concept of a planned village program, as presented in the Master Plan for the NSH site,
was adopted by the City of Northampton in 1993 and provided a vision for the development of
the site. The proposed project involves the redevelopment of a portion of the former NSH,
which now includes approximately 50 buildings on 124 acres of land on both sides of Prince
Street (Route 66). The City had created a specific zoning district, named the Planned Village
(PV), to accommodate a development to include a combination of commercial, industrial and
residential uses to create a village-like or campus community.
The total Planned Village build-out includes approximately 476,000 s.f. of mixed-use
commercial space, comprising a mix of retail, office, light industrial, and research &
development/multimedia space as well as space for live-work studios, a child care center, a
possible community center/museum area and the development of a 60-80 unit assisted living
' facility for seniors. The Planned Village will also include 207 residential units, 100 of which
would be single-family homes and 107 of which would be mixed-income rental housing. Fifty
percent of the residential units will be designated as affordable.
This memorandum has been prepared to summarize the findings and observations of our
infrastructure assessment including the following utilities: water, sewer, cable TV, telephone,
electricity, and gas.
The documents listed below were prepared previously and provide information on the Village
at Hospital Hill Development and the adequacy of the existing water distribution and sewer
collection systems to serve the proposed development. These documents were reviewed and
utilized, as appropriate, in the preparation of this technical memorandum.
Original printed on recycled paper.
f
The Village at Hospital Hill
Northampton, MA
Infrastructure Assessment
Technical Memorandum
Prepared For:
MassDevelopment
Boston, Massachusetts
and
Beals &Thomas, Inc.
. • �a . . ` Southborough, Massachusetts
� 9
o MICHAEL R. �yC-1
PARSONS m
°v 29270
o SANITARY
S/
1t��1�03 June 2003
Appendix H Added
November 2003
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