Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 525 - EFFLUENT GUIDELINES AND STANDARDS
Sec2 096-525-4 - General Provisions [see 40 CFR part 401]
Subsection 096-525-4-VIII - pH Effluent limitations under continuous monitoring [see 40 CFR 401.17]
Current through 2024-38, September 18, 2024
(a) Where a permittee continuously measures the pH of wastewater pursuant to a requirement or option in a National Pollutant Discharge Elimination System (NPDES) permit issued pursuant to section 402 of the Act, the permittee shall maintain the pH of such wastewater within the range set forth in the applicable effluent limitations guidelines, except excursions from the range are permitted subject to the following limitations:
(b) The Department, may adjust the requirements set forth in paragraph (a) of this section with respect to the length of individual excursions from the range of pH values, if a different period of time is appropriate based upon the treatment system, plant configuration or other technical factors.
(c) For purposes of this subsection, an excursion is an unavoidable malfunction as defined in 38 MRSA, §349(9)(B) in which the pH value of discharge wastewater exceeds the range set forth in the applicable effluent limitations guidelines.
