Section Env-Ws 372.31 - Verification of Quality of Distribution Pipe Installation(a) Water distribution piping at small community water systems shall be installed in accordance with the provisions of C-601 or C-900 of the AWWA, listed in Env-Ws 307,as applicable to the type of distribution pipe chosen.(b) At a proposed small community water system, the quality of the workmanship and adherence to the approved design and pipe specifications shall be documented in writing to the department in accordance with (c) through (g) below. Such certification shall not be required for the expansion or modification of the distribution system once the initial design has been completed and the water systemhas been assigned an EPA ID number.(c) The person who owns and is proposing the creation of the new small community water system shall retain the services of a qualified third party who is not an employee or otherwise has a financial interest in the project or legal relationship with the project principals to certify the quality of the water distribution piping installation.(d) The following parties shall be acceptable to the department for providing certification: (1) A New Hampshire-certified water distribution system operator with a grade III or higher certificate;(2) A New Hampshire-licensed civil or sanitary engineer;(3) A city or town building or code enforcement official or other person with significant experience in drinking water industry specifications for piping and pipe installationof the city or town in which the project is located; or(4) A public water system designer.(e) Certification from the owner or developer of the water system or from the contractor performing the distribution pipe installation shall not be acceptable.(f) The person or firm selected as the third party to inspect the quality of the distribution piping installation shall: (1) Inspect a minimum of 20% of the total footage for each size of water distribution pipe included on the approved plans; and(2) P rovide to the department a map identifying the pipe section(s) observed and a certificate or letter indicating that the quality of the distribution pipe installation met the applicable AWWA installation standard and was consistent with the best practices in the industry.(g) The certificate required by (f)(2), above,shall include:(1) The name and address of the owner or developer;(2) The name of the development and city or town in which it is located;(3) The name of the street and center line stationing for which the certificate applies;(4) The name of the contractor;(5) Pipe information including type, size, and cover depth;(6) The date(s) of the inspection(s) for the distribution pipe installation;(7) The inspector's qualification pursuant to (d), above, which indicate expertise with pipe line installation and the applicable AWWA pipe installation standards; and(8) Confirmation that the results of the leakage test on the pipe did not exceed the leakage limits specified in the applicable AWWA pipe installation standards.(h) Copies of the leakage test results for the entire water distribution system and the certificate and map as per (f), above, shall accompany the as-built plans or record drawings submitted pursuant to Env-Ws 372.33.(i) Such certification shall not be required if the total length of new distribution piping installedis less than 250 feet.(j) If the local legislative body of a political subdivision that owns a small community water system does notvote to approve funding for the requirements of this section and the requirements are not fully funded by the state, the department shall not require the political subdivision to comply with this section.N.H. Code Admin. R. Env-Ws 372.31
#8496, eff 11-30-05 (formerly Env-Ws 372.26 )