A.
When categorical pretreatment standards for an industry category are published (promulgated), nondomestic users that perform that process and either currently discharge or are scheduled to discharge wastewater from the process to the POTW, must submit a baseline monitoring report to the director. This report must contain the information listed in subsection (C) of this section. The report is due within 180 days after the effective date of a categorical pretreatment standard, unless the final administrative decision on a category determination comes later.
B.
Nondomestic users that wish to begin discharging wastewater to the POTW from operations subject to categorical pretreatment standards after EPA has published the standards (called new sources), shall submit a baseline monitoring report to the director containing the information listed in subsection (C) of this section. However, for new sources, the report must be provided at least 120 days before desiring to discharge. New sources shall describe the method of pretreatment they intend to use to meet applicable categorical pretreatment standards. Because monitoring data will not be available for proposed facilities, new sources instead must provide estimates of the anticipated flow rates and quantity of pollutants to be discharged.
C.
The baseline monitoring report shall include the following information:
1.
All information required in BLMC § 13.14.540(A)(1) through (A)(9).
2.
Additional conditions for existing sources measuring pollutants.
a.
Nondomestic users shall take a minimum of three representative sample to compile the data for the baseline monitoring report.
b.
Nondomestic users shall take samples immediately downstream from pretreatment facilities if such exist or immediately downstream from the regulated process if no pretreatment exists. If the nondomestic user mixes other wastewaters with the regulated wastewater prior to pretreatment, the nondomestic user must provide the flows and concentrations necessary to apply the combined wastestream formula of BLMC § 13.14.310(C) and 40 CFR Part 403.6(e). Where the nondomestic user wants an alternate concentration or mass limit, and it is allowed by federal rules at 40 CFR Part 403.6(e), the user shall propose the adjusted limit and provide supporting data to the director.
c.
Sampling and analysis shall be performed in accordance with BLMC § 13.14.800, Sample collection, and 13.14.790, Analytical requirements.
d.
The director may allow the report to use only historical data if the data is good enough to allow the evaluation of whether (and which) industrial pretreatment measures are needed.
e.
The baseline monitoring report shall indicate the time, date, and place of sampling, methods of analysis. The user shall certify that the sampling and analysis presented is representative of normal work cycles and expected pollutant discharges to the POTW.
3.
Compliance Certification. A statement, reviewed by the authorized representative of the nondomestic user and certified by a qualified professional experienced in the design, construction, and operation of pretreatment facilities indicating whether pretreatment standards are being met on a consistent basis, and, if not, whether additional operation and maintenance (O&M) and/or additional pretreatment steps are required to meet the pretreatment standards and requirements.
4.
Compliance Schedule. While new sources must install the treatment required to meet the pretreatment standards prior to operation, existing sources may be granted a compliance schedule where they must provide additional pretreatment and/or O&M to meet the pretreatment standards. In such cases, the nondomestic user shall propose the shortest schedule by which they can provide the additional pretreatment and/or O&M. The completion date which the nondomestic user proposes in this schedule may not be later than the compliance date established for the applicable pretreatment standard. Any compliance schedule authorized pursuant to this section must also meet the requirements set out in BLMC § 13.14.710.
D.
Signature and Report Certification. All baseline monitoring reports must be certified in accordance with BLMC § 13.14.830(A) and signed by an authorized representative of the user.
(Ord. 1719 § 1 (Exh. A), 2024)