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Infastructure Assessment E yy p� Mn _ ti F - L � I 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 go 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 C:\E-Ratcs\Mass-May2000\TERMS2.WPD g 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 C:\E-Rates\M ass-May2000\TER.MS2.WPD 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 C:\E-Ratcs\Mass-May2000\TERMS5.wpd 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. C:\E-P,ates\Mass-M ay2000\TERMS 5.wpd 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. C:\E-Rates\Mass-M ay2000\TERMS 5.wpd 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: C:\E-Rates\Mass-May2000\TERMS5.wpd 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; C:\E-Rates\Mass-May2000\TEP-MS5.wpd 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: C:\E-Rates\Mass-May2000\TERMS 5.wpd 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. C:\E-Rates\Mass-May2000\TERMS 5.wpd 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. go Effective: May 1, 2000 wn s 4 C:\E-RatesUMass-May2000NTEPMS4.WPD ift 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 C:\E-Rates\Mass-May2000\TERMS4.WPD go 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 C:1E-Ratcs\Mass-May2000\TEP,MS4.WPD 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 C:\E-RatesWass-May2000\TEP,MS4.WPD 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 C:lE-RatesNass-May2000\TERM54.WPD 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; C:\E-RatesiMass-May2000\TEP MS4.WPD 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 A* Am rw a�a X* we A Appendix G Massachusetts Electric Company Line Extension Policies w V 0 �n 0 66 E m CL t4 O O d CD C14 T R L � U A N U o n 'n c d � y r-- O ti Q .✓ Oy CV r ci O •Q O J p F- N O a d M i9 ti N m N CL O O O O CN N (n „� J I m i N j = 00 r VII co W N r N 0 3 m Q V- O .. p to = O .0 O r tT C a) @ LL .0 = O a N w+ d .� ° E v 3 0 M _ v 3 m O O to CV O N p Q. > Z V fQ a) .2 N CV O M U Jam- r J CD AI11 - O •@ Q cc C U) co �+ W d O O O a) 7 = O J w LO CG r to 'O d U O p a) x co Iq u O - Lo c7 to d Z d 2 _ > f0 co s N d U fri N c m _ O N U) 3 0 O 04 O C � m a�i 3 -a _ c p a'� r C) w U CL co d d t0 O Q- E r CV O z 3 c 0 o LO z C7 O 0 W ■` r u R V r r O M h N Un co CO CO CD co N U M w d' O O O) 0 U() tt tt Uf) Un O N O N M N 7 E c = m C i. r CO CO 0 Uf) O Q � Ufa (00 O M O O r CO CO N N i H y Un 6 di M M M M N N N N c C C 3 is Q) O N a n O +. 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N r M CO 1— 11 M N O O a) M M N M Lr) ti > S Q ca d L O r. 2 F� w 0 W � C) O o C) o O o O d O a) O N O O N o o N can M m N R E Z !' O O O d !Z O r.+ d 3 o f cL o m m R _ O O O O r- O O d Y Y 'C U 0 y N CD CO O M co U Cl) N Cl) LO �• U a d CD) d d a7 a7 a� Z o v ' O o Z H !Z > a) m d W '0 .a n .' > > m m m a E E C c E � m .. N N u m w o o) w a) m w aa)) CD 0E) y >+ c O c C N c c a) a) v 'D O " c`v .6 m 6 a) m o m a) I� O N o O O) o O �' •T O O 1l_ N O 1- OD O Ocu co O O O C a) N N r Co N r O N N > D o m fa Z m m s '0 co E E y a) c a 2 •c E - i X j + F C a) a) 'O (7 -O N '0 a) a) a) m d C (9 C of C9 C w :s w E _ (9 fa (0 T N N N N c C: (D a) a) a) a) 3 () a) a) a) m m 2 E p :v_ E 3 o E E to Fn E O U E U U U o O O O a) O a) a) O ca la m _ It U of [f U �_ Q U U U U o a) a) Z in v M m _ a) t0 fa L O t O 7 O Z LL F- 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 Tighe&Bond 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. -14- Original printed on recycled paper. Tighe&Bond 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. -13- On"ginal printed an recycled paper. Tighe&Bond • 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. -12- ON Original printed on recycled paper. Tighe&Bond 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, -11- Original printed on recycled paper. 0 M O W E In r CO O Q rte+ CD N CD CA c 7 V p r O O c m a� ca � U ca 3 w, 3 c o a) o o -0-0 o i N 0 7 M N r-- (o Ly �- �t N LO It co a) a a) CU (D w 3 � v m U `° m m (D C)M U.) CD N a l N U r f•) CO > O L E r r r r �„ > C > "" 3 _a) O d L LL. Cn U) L U O O r Y L C O O d IL 3 N N � c 0 R = U) 3 O O C; O N a 0' d r � D v r Q. E :5 N y vl 3 E co m 0 a O 0 3 0 0 in vi 3 Eo a `) a cu 3 CL—Ir vi O ai o (o i i c o ' > Z H d E M r Lo m N a7 to a) Q? = a) r= t O 0 O a) vi 0 o � F— Y .•L. c` = 0 C R d O a1 C1 0 U co 0 to U CD O L 3 0 3(D Y L ' O a> V a) a) w d Z O ccn d 3 Co co coo ti � � Q) 0 2 E co c C Y O r N N a) E O O O t m N o 0 0 0 CD 3 3 3 3 3 L (Q C o 0 0 0 0 3 L 3 U 0 U LL cu C13 a ? a m a�i ) L 4) y N — N o ".' m m co CL CL °. d a y r r r = � 3 3 3 0 � to 3 E V � oCS o2f 0 U cn In w 5 N fn = co m a) a) a) in X 3 U U U U O a) . m to C C C J U O N U C L a E C (� (� n Z fn c CD to CL d W d � o Z_ Tighe&Bond 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. -9- Original printed on recycled paper. Tighe&Bond 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 -8- Original printed on recycled paper. Tighe&Bond 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. -7- Original printed on recycled paper. Tighe&Bond 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 -6- Original printed on recycled paper. Tighe&Bond 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 -5- Original printed on recycled paper. Tighe&Bond 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. -4- 40 Original printed on recycled paper. Tighe&Bond 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 -3- Am Original printed on recycled paper. .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. -2- Original printed on recycled paper. Tighe&Bond 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 1 •