314 CMR 12.07
Recordkeeping and Reporting
(1) Monthly operating records shall be maintained in accordance with the Department's
publication titled Directions for Completing Monthly Report Form for Wastewater Treatment
Plants, made available by the Department on request. All daily inspection logs consistent with
the O & M Manual requirements shall be kept at the wastewater treatment facility for a period
of three years.
12.07: continued
(2) Records of operation of wastewater treatment facilities or disposal systems required by the
Department shall be submitted on forms supplied by the Department, on other forms approved
by the Department for such use, or through eDEP. Monthly reports shall be certified by the
wastewater treatment plant operator in charge and submitted by the tenth calendar day of the
following month, unless otherwise specified in the permit. The Department may change the date
of submittal upon receiving a written request from the person explaining the reason that
314 CMR 12.00 imposes an unreasonable hardship.
(3) Records shall be maintained of septage discharged to the treatment works and organic
material accepted and processed in all anaerobic digesters at POTWs pursuant to 314 CMR
12.03(13). They shall contain at a minimum, the date, time, source, volume discharged and
whether or not the load contained industrial wastes. Septage discharged at a wastewater
treatment facility shall be tested for pH. These records shall be made available to the
Department upon request.
(4) Data contained in the monthly operating records or other such records submitted to the
Department shall be factually accurate to the best knowledge of the person operating the
wastewater treatment facility.
(5) Records of all monitoring information including all calibration and maintenance records,
all original strip chart recordings for continuous monitoring instrumentation, and copies of all
reports required by 314 CMR 12.00 shall be retained for a period of at least three years from the
date of the sample, measurement, or report. The retention period may be extended by the
Department at any time. Records of monitoring information shall include:
(a) The date, exact place, and time of sampling or measurements;
(b) The name of the individual(s) who performed the sampling or measurement;
(c) The date(s) analyses were performed;
(d) The name of the individual(s) who performed the analyses;
(e) The analytical techniques or methods used; and
(f) The results of such analyses.
(6) Every person owning a sewer system shall maintain records on all sanitary and industrial
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sewer connections authorized to discharge to the sewer system. By January 31 of each year, the
owner of the sewer system shall submit to the Department an annual sewer connection/extension
report documenting all connections and extensions made to the system in the prior calendar year,
the flows associated with each new connection and extension, and quantification of any
infiltration and inflow reduction work completed to offset the impacts of the additional flow.
A copy of the annual sewer connection/extension report shall also be provided to the owner of
the wastewater treatment facility receiving flow from the sewer system.