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HomeMy WebLinkAboutSD-23-08 - Supplemental - 1170 1180 Dorset Street (22)SOUTH BURLINGTON WATER DEPARTMENT 403 Queen City Park Road South Burlington, VT 05403 Phone: (802) 864-4361 Fax: (802) 864-0435 www.sburl.com SBWD Technical Review Comments SD-23-08, Park Road Area Date: June 8, 2023 Submitted by Jay Nadeau, SBWD Director South Burlington Water Department comments below. 1. When a pipe material is specifically noted on the approved project drawings, the contractor/developer shall not have the option of utilizing any other pipe material. Bury depth shall be a minimum of 6’ and a maximum of 8’. 2. All Ductile Iron pipe, hydrant barrel, and fittings for new water lines and appurtenances shall be installed with V-Bio Enhanced Polyethylene Pipe encasement. See CWD Specifications for details. 3. Anchor tees (aka: Hydrant tees and Swivel tees) shall be Class 350 ductile iron, cement lined, conforming to AWWA/ANSI C110/A21.10, C111/A21.11, and C104/A21.4. In lieu of Anchor tees, Mechanical Joint tees may be used if a Foster Adaptor is used to secure the valve directly to the branch of the tee. 4. Mechanical joint restraints shall be either EBAA Iron MegaLug, Ford Uniflange Series 1400, Romac RomaGrip, or approved equal. 5. Gate valves shall be Mueller, Kennedy, AFC, M&H or approved equal on water distribution mains and Mueller, AFC, or approved equal on CWD Transmission mains. 6. Gate valve boxes located in roadways or sidewalks shall have one non-adjustable paving riser of a height ranging from two-inches (2”) to four-inches (4”) as need to be brought to final pavement grade. 7. Curb boxes located in roadways or sidewalks shall be placed inside a gate valve box top section with cover and brought to final pavement/concrete grade with one non-adjustable paving riser per #10 above. 8. V-Bio polyethylene encasement is required for all ferrous material installations underground. This includes fittings for PVC and HDPE pipe. 9. Cor-Blue T-bolts and nuts are required for underground installations. 10. Tracer wire and termination box specifications are required for all plastic pipe. 11. The SBWD shall be notified in advance to inspect all mechanical joint fittings, main line taps, appurtenances, thrust blocks, and water line crossings prior to occurrence of back filling. 12. Fire Hydrants shall be Kennedy K-81 D or Waterous Pacer and shall conform to AWWA C502. Note: Waterous Pacer hydrants shall be installed with a Boston Operating Nut. SOUTH BURLINGTON WATER DEPARTMENT 403 Queen City Park Road South Burlington, VT 05403 Phone: (802) 864-4361 Fax: (802) 864-0435 www.sburl.com 13. 4” Storz pumper nozzle connections are required on hydrants. Spring loaded hydrant flags and Storz connections shall be installed before new lines are turned on by the Department. 14. Concrete thrust blocks shall be installed on caps, tees, hydrants and bends of 22.5 degrees and greater. Thrust blocks shall be used in conjunction with “Mega-Lug” restraining glands or approved equal. Poured in place thrust blocks shall be neatly formed with wooden side forms against undisturbed soil. Precast thrust blocks shall be used behind fire hydrants. 15. CWD continues to allow for “approved equal” products but they shall be reviewed by the appropriate CWD Division. 16. No parallel underground utility (ex. phone, electric, cable, gas) shall be designed or installed within four feet (4’) of the water main from either side, or above the water main from the bottom of the main to finish grade. Storm sewer and sanitary sewer separations are only as allowed in these specifications and the VT Water Supply Rule. No building or structure shall be built above the water line or within the water line easement. All projects that may cross or impact existing transmission or water distribution lines shall include the requirement to field verify all water associated infrastructure that may be impacted. 17. Connections will only be permitted between the hours of 7:00am and 3:00pm on regular Champlain Water District business days, except Fridays. All connections must be completed by 3:00pm; connections that cannot be completed by 3:00pm may be suspended and completed the following business day. A suspended tap may entail back filling the excavation until the following day. CWD personnel have the authority to suspend connections that they deem cannot be completed within the time period stated above. 18. No water lines shall be installed after November 15 or before April 1 without prior approval of the appropriate CWD Division. The appropriate CWD Division may restrict work before November 15 and after April 1 during adverse weather conditions. CWD does not allow excavating for water mains during the winter months except by special permission. 19. The applicant or project engineer shall be responsible for the submittal of test results to the appropriate CWD Division. Submittal of all test results shall be required prior to the water main being placed into service. 20. Record drawings, prepared by a VT licensed Professional Engineer shall be provided to the SBWD in pdf. and Auto-CAD format. Drawings shall include ties to all gate valves and curb stops to sub-meter accuracy. 21. A blasting and monitoring plan must be submitted to the SBWD and CWD prior to blasting for review and comment. Andy damage to the nearby water infrastructure that is a result of blasting is the developers responsibility to repair and their expense. It is the responsibility of the contractor to be familiar with the CWD Specifications beyond what is included in this information. The Champlain Water District Specifications and Detail for the Installation of Water Lines and Appurtenances information can be found at www.champlainwater.org SOUTH BURLINGTON WATER DEPARTMENT 403 Queen City Park Road South Burlington, VT 05403 Phone: (802) 864-4361 Fax: (802) 864-0435 www.sburl.com Plan Specific Comments Existing Conditions, Sheet 2. The water line shown on Park Road has not yet been installed and will be necessary prior to construction of this project. At the time of construction on Park Road, anchor tees and valves must be installed for this project’s water lines since size on size taps are not permitted. If possible, move the electric line to the other side of the road to prevent any interference with future water line or appurtenance work. The water lines for this project located outside the City ROW are considered private and shall not be owned by the City. The proposed 10’ easement to the City of South Burlington shall only be fore access to the fire hydrant for routine maintenance, access to all curb stops for routine maintenance and disconnections, and for the Water Department to oversee repairs in accordance with conditions set forth in the City of South Burlington Water Ordinance. This information is provided for information and engineering purposes. Per the Vermont Department of Public Safety Division of Fire Safety, the current adopted code is the International Plumbing Code (IPC), 2015 Edition. The 2015 IPC requires 20 psi minimum for toilets (“water closet, tank, close coupled or one piece), which is the controlling factor for establishing the minimum required pressure for internal plumbing (assuming the toilets do not have flushometer valves). Site plans indicate that the preconstruction grades of the proposed homes range between 402’ and 429’. The SBET low operating level is 515’, and the highest elevation in the City that can still provide 35psi is 435’. The upper floors of some homes are likely to experience lower water pressures than what customers are accustomed to. Additional data from the applicant will be required to confirm there are adequate pressures for second floor plumbing fixtures. Furthermore, if residents intend to install water booster pump stations within the proposed units, approval must be obtained by the Secretary in accordance with the VT Water Supply Rule. Plan and Profile, Sheet 4. The fire hydrant at the end of Trails Bend Drive should be directly attached to the end of the main, without a bend. The hydrant isolation valve should be at least one full pipe length away from the hydrant. Ne service connections can be installed between the hydrant isolation valve and the hydrant. The hydrant isolation valve on the hydrant at the end of Brookfield Drive should be located on the water main side of the road. Landscape Plan, Sheet L1: No plantings can be installed near (within 5’) water appurtenances including curb stops, gate valves and fire hydrants. Plantings should not be placed over water mains whenever possible.