(A) All SIUs must, at a frequency determined by the Board submit no less than twice per year (June and December, or on dates specified) reports indicating the nature, concentration of pollutants in the discharge which are limited by pretreatment standards and the measured or estimated average and maximum daily flows for the reporting period. In cases where the pretreatment standard requires compliance with a BMP or pollution prevention alternative, the SIU must submit documentation required by the Board or the pretreatment standard necessary to determine the compliance status of the SIU.
(B) The Board may authorize a CIU to forego sampling of a pollutant regulated by a categorical pretreatment standard if the CIU has demonstrated through sampling and other technical factors that the pollutant is neither present nor expected to be present in the discharge, or is present only at background levels from intake water and without any increase in the pollutant due to activities of the CIU (see 40 CFR 403.12(e)(2)). This authorization is subject to the following conditions:
(1) The waiver may be authorized where a pollutant is determined to be present solely due to sanitary wastewater discharged from the facility provided that the sanitary wastewater is not regulated by an applicable categorical standard and otherwise includes no process wastewater.
(2) The monitoring waiver is valid only for the duration of the effective period of the SIU wastewater discharge permit, but in no case longer than five years. The CIU must submit a new request for the waiver before the waiver can be granted for each subsequent SIU wastewater discharge permit.
(3) In making a demonstration that a pollutant is not present, the CIU must provide data from at least one sampling of the facility's process wastewater prior to any treatment present at the facility that is representative of all wastewater from all processes.
(5) Non-detectable sample results maybe used only as a demonstration that a pollutant is not present if the EPA approved method from 40 CFR Part 136 with the lowest minimum detection level for that pollutant was used in the analysis.
(6) Any grant of the monitoring waiver by the Board must be included as a condition in the CIU's permit. The reasons supporting the waiver and
any information submitted by the CIU in its request for the waiver must be maintained by the Board for three years after expiration of the waiver.
(7) Upon approval of the monitoring waiver and revision of the CIU's permit by the Board, the CIU must certify on each report with the statement in § 52.113(C) below, that there has been no increase in the pollutant in its wastestream due to activities of the CIU.
(8) In the event that a waived pollutant is found to be present or is expected to be present because of changes that occur in the CIU's operations, the CIU must immediately: comply with the monitoring requirements of § 52.103(A), or other more frequent monitoring requirements imposed by the Board, and notify the Board.
(9) This provision does not supersede certification processes and requirements established in categorical pretreatment standards/except as otherwise specified in the categorical pretreatment standard.
(C) All SIU periodic compliance reports must be signed and certified in accordance with § 52.113(A).
(D) Samples collected to satisfy reporting requirements must be based on data obtained through appropriate sampling and analysis performed during the period covered by the report, based on data that is representative of conditions occurring during the reporting period.
(E) If a SIU subject to the reporting requirement in this section monitors any regulated pollutant at the appropriate sampling location more frequently than required by the Board, using the procedures prescribed in § 52.133, the results of this monitoring shall be included in the report.
(Ord. 9-2016, passed 6-7-2016)