Section Env-Wq 704.08 - Force Main and Pressure Sewer Construction Materials(a) Force mains and pressure sewers shall be constructed of ductile iron (DI), high density polyethylene (HDPE), or PVC material.(b) Force mains and pressure sewers shall be treated as gravity sewers for purposes of foundation bedding and backfill requirements.(c) PVC pipe used for force mains and pressure sewers shall be certified by its manufacturer as conforming to the ASTM D2241 or ASTM D1785 standards in effect when the pipe is manufactured.(d) HDPE pipe used for force mains and pressure sewers shall be certified by its manufacturer as conforming to the ASTM D3035 standard in effect when the pipe is manufactured.(e) If DI pipe is used in an environment that could cause corrosion or other deterioration of or damage to an iron pipe, or otherwise reduce the typical life expectancy of the pipe, such as may occur with certain soil types, low pH levels, or water conditions, the pipe shall be protected against corrosion, such as with cathodic protection.N.H. Code Admin. R. Env-Wq 704.08
(See Revision Note at chapter heading for Env-Wq 700) #8590, eff 3-25-06
Amended byVolume XXXIV Number 46, Filed November 13, 2014, Proposed by #10693, Effective 10/15/2014, Expires10/15/2024.