(A) Guide for design. The design of the water system must be consistent with the town’s water system.
(B) Extension and network design.
(1) Any extension of a water line or network of water lines shall be designed to provide for required fire flows and consumptive flows simultaneously with no residual pressures in the system dropping below 20 psi. If future extension of a proposed system will increase the possibility of residual pressures dropping below 20 psi, system analysis shall include anticipated future expansion.
(2) Required water pipe size will be determined by a network analysis, but in no case will public lines smaller than six inches in diameter be permitted. All systems are required to be looped where practical to provide more than one feed point to a network.
(C) Design water consumption rates. The average annual daily rate of consumption for design purposes is to be 165 gpcd in residential areas. For purposes of computing peak hourly rates of flow, a peak factor of 300% is assumed (i.e., 495 gpcd).
(D) Fire flow requirements and fire hydrants. All fire hydrants shall be capable of delivering at a minimum rate of 800 gpm.
(E) Maximum spacing of hydrants in residential districts is 600 feet. All fire hydrants, when installed, shall have a clear level working area extending not less than three feet around the hydrants. Banks may be excavated to obtain the clearance, but a masonry retaining wall, with footing, shall be constructed where excavated bank exceeds two feet in height. Consideration is to be given to fire truck access and hose laying techniques in the spacing of hydrants. Fire Department approval of fire hydrant location and construction is required prior to final acceptance.
(F) Valve location.
(1) Valves shall be located in the network so that no single accident, breakage or repair to the system will necessitate the removal from service of a length of pipe greater than 500 feet in high value districts and 800 feet in residential districts. Valves are to be located so that no closure of a valve on an “artery” line is required unless there is breakage on the”artery” itself.
(2) Every fire hydrant is to have a valve on the lead line. Blow off valves are required at the ends of dead-end lines, whether temporary or permanent.
(G) Town participation in utility extensions.
(1) In the event that an area to be serviced by a developer is lesser in size than the maximum area to be serviced by the proposed main sewer or water line and its laterals, the main shall be designed, engineered and constructed to serve the maximum area described. The town reserves the right to increase the diameter of any sewer or water extensions, if it deems it advisable, in conforming with the town general plan. If future extensions of a proposed water line will increase the possibility of residual pressures dropping below 20 psi, the town may request the line size be increased. The town will participate by paying the difference in construction costs between the line size required to serve the development and that size deemed necessary by the town to serve all future expansion.
(2) After the developer has submitted a cost breakdown to the Public Works Director, the construction cost of the oversize shall be determined and agreed upon by the Council prior to commencement of construction. Costs of lateral and branch lines and their appurtenances will not be included in the agreed construction cost. Differences between water valve costs may be included in the construction costs; however, fire hydrants will not be included. The Council reserves the right to reject the developer’s cost breakdown if it is inconsistent with current costs of equivalent construction in the town.
(H) Recapture agreement.
(1) If a property owner or developer extends a water or sewer main across undeveloped property to reach his or her development or property, and wishes to be reimbursed for the cost of installing the extension by future customers, he or she may request a recapture agreement be drawn up by the town. The request for a recapture agreement must be in writing to the Clerk for presentation to the Council, who will grant or deny the request.
(2) If the Council grants the request, after the actual construction costs for the extension are submitted to the Public Works Director, the terms of the recapture agreement will then be drawn up by the Public Works Director.
(3) Generally, other customers desiring to tap into the extension after installation shall pay the town their proportionate share of the cost as determined by the recapture agreement. The funds so collected shall then be paid to the developer. If a single entity extends a line, and other customers tap into it, the entity can collect from the other customers through the town.
(4) The maximum period of time of the recapture agreement shall be up to ten years.
(1974 Code, § 14-5-9)