Section Env-Wq 1205.17 - Monitoring and Surveillance(a) The WRBP shall sample and analyze the wastewater discharges of users and conduct surveillance and inspection activities to identify, independently of information supplied by each user, occasional and continuing noncompliance with industrial pretreatment standards. As required by the WRBP's NPDES permit, all users shall grant unrestricted access to department and EPA personnel for the purposes of investigating and sampling discharges from the users.(b) Wastewater monitoring and flow measurement facilities shall be operated and maintained in accordance with the manufacturer's requirements. The failure of the user to maintain its wastewater monitoring and flow measurement facilities in good working order shall not be grounds for the user to claim that sample results are unrepresentative of its discharge.(c) All compliance reports shall be based upon data obtained through sampling and analysis preformed during the period covered by the report.(d) The WRBP shall establish the frequency of monitoring necessary to assess and assure compliance by industrial users with applicable pretreatment standards and requirements.(e) Grab samples shall be used to monitor pH, cyanide, total phenols, oil and grease, sulfide and volatile organic compounds. For all other pollutants, 24-hour composite samples shall be obtained through flow-proportional composite sampling techniques, unless time proportional composite sampling or grab sampling is authorized by the WRBP. Where time-proportional composite sampling or grab sampling is authorized by the WRBP, the samples shall be representative of the discharge and the decision to allow the alternative sampling shall be documented in the industrial user file for that facility or facilities.(f) Multiple grab samples collected during a 24-hour period shall be composited prior to the analysis using protocols, including appropriate preservation, specified in 40 CFR Part 136 and appropriate EPA guidance, as follows:(1) For cyanide, total phenols, and sulfides the samples shall be composited in the laboratory or in the field;(2) For volatile organics and oil & grease the samples shall be composited in the laboratory; and(3) Composite samples for other parameters unaffected by the compositing procedures as documented in approved EPA methodologies shall be authorized by the WRBP in accordance with 40 CFR 403.12(g)(3).(g) For facilities for which historical sampling data do not exist and for which sampling in support of baseline monitoring pursuant to 40 C.F.R. 403.12(b) and 90 -day compliance reports, pursuant to 40 C.F.R. 403.12(d) are required, a minimum of 4 grab samples shall be used for pH, cyanide, total phenols oil and grease, sulfide and volatile organic compounds.(h) For facilities for which historical sampling data are available, the WRBP shall proceed in accordance with 40 CFR 403.12(g)(4).(i) For the periodic reports compliance and reports for industrial users not subject to categorical pretreatment standards, the WRBP shall establish the number of grab samples necessary to assess and assure compliance by industrial users with applicable pretreatment standards and requirements.N.H. Code Admin. R. Env-Wq 1205.17
#6304, eff 7-26-96; ss by #8124, INTERIM, eff 7-26-04, EXPIRES: 1-22-05; ss by #8235, eff 12-22-04 (See Revision Note at chapter heading for Env-Wq 1200) (formerly Env-Ws 1205.17 ); ss by #9798-A, eff 10-9-10
Amended by Volume XXXIX Number 16, Filed April 18, 2019, Proposed by #12739, Effective 3/19/2019, Expires 3/19/2029.