(A) Minimum main line pipe size shall be six inches.
(B) Minimum pressure in system shall be 20 psi at peak demand (fire flow).
(C) Minimize dead ends and where they must occur, provide a fire hydrant per standard detail NPW-12. The fitting required at a dead-end line shall be determined by the Director of Public Utilities.
(D) Minimum cover shall be three feet.
(E) Install valves as follows: three at cross; two at a tee; one on a single hydrant branch.
(F) Install valves on loops so a maximum of 600 feet can be taken from service without affecting other areas.
(G) Separate water lines ten feet horizontal distance from sewer lines (existing or proposed) or keep water line 18 inches clear above sewer line. Where 18 inches clear vertically cannot be maintained below or above the sewer line, both lines shall be mechanical joint ductile iron a minimum of ten feet on either side of the crossing. Center the crossing at the center of the pipe, both lines.
(H) Maximum spacing between fire hydrants shall be 500 feet (250 radius).
(I) Backflow preventers shall be supplied for every service connection. For services up to three- fourths inch, it shall be integral with the meter, for services larger than three-fourths inch up to two inches in a separate meter box and for backflow preventers larger than two inches, a vault shall be provided.
(J) Vaults shall have aluminum hatch doors with lift assist and shall be capable of withstanding expected traffic loads.
(K) All bypasses, other than those with locking valves, shall have detector check valves installed.
(L) Reduced pressure principle backflow preventers are to be installed on all lines to installations involving wet manufacturing processes, sprinkler systems or any other hazardous location as determined by the Director of Public Utilities.
(M) Water line drawings and specifications shall bear the seal of a registered professional engineer licensed to practice in the state and the installation of the system shall be inspected and certified by the engineer in accordance with N.C.A.C.IOD.0903.
(N) Water lines shall have a 25-foot permanent easement (12.5 feet each side of centerline) in the town's name. A 50-foot temporary construction (25 feet each side of centerline, unless directed otherwise) easement shall be provided.
(Ord. passed 6-21-2011)