Res 2005-105 - Laserfiche WebLink

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City of San Marcos TPDES Permit No. WQOO 1 0273002 specific analyses when the toxicity tests show significant lethality. Where the permittee has identified or suspects specific pollutant(s) and/or source(s) of effluent toxicity, the permittee shall conduct, concurrent with toxicity testing, chemical-specific analyses for the identified and/or suspected pollutant(s) and/or source(s) of effluent toxicity; 3) Quality Assurance Plan - The TRE Action Plan should address record keeping and data evaluation, calibration and standardization, baseline tests, system blanks, controls, duplicates, spikes, toxicity persistence in the samples, randomization, reference toxicant control charts, as well as mechanisms to detect artifactual toxicity; and 4) Project Organization - The TRE Action Plan should describe the project staff, project manager, consulting engineering services (where applicable), consulting analytical and toxicological services, etc. c. Within 30 days of submittal of the 1RE Action Plan and Schedule, the permittee shall implement the TRE with due diligence. d. The permittee shall submit quarterly TRE Activities Reports concerning the progress of the TRE. The quarterly TRE Activities Reports are due on or before April 20th, July 20th, October 20th, and January 20th. The report shall detail information regarding the TRE activities including: 1) results and interpretation of any chemical-specific analyses for the identified andlor suspected pollutant(s) performed during the quarter; 2) results and interpretation of any characterization, identification, and confirmation tests performed during the quarter; 3) any data and/or substantiating documentation which identifies the pollutant(s) and/or source(s) of effluent toxicity; 4) results of any studies/evaluations concerning the treatability of the facility's effluent toxicity; 5) any data which identifies effluent toxicity control mechanisms that will reduce effluent toxicity to the level necessary to eliminate significant lethality; and 6) any changes to the initial TRE Plan and Schedule that are believed necessary as a result of the TRE findings. Copies of the TRE Activities Report shall also be submitted to the U.S. EPA Region 6 office. e. During the TRE, the permittee shall perform, at a minimum, quarterly testing using the more sensitive species; testing for the less sensitive species shall continue at the frequency specified in Part l.b. f. If the effluent ceases to effect significant lethality (herein as defined below) the permittee may end the TRE. A "cessation oflethality" is defined as no significant lethality for a period of 12 consecutive weeks with at least weekly testing. At the end of the 12 weeks, the permittee shall submit a statement of intent to cease the TRE and may then resume the testing frequency specified in Part l.b. The permittee may only apply the "cessation oflethality" provision once. This provision accommodate situations where operational errors and upsets, spills, or sampling errors triggered the TRE, in contrast to a situation where a single toxicant or group of toxicants cause lethality. This provision does not apply as a result of corrective actions taken by the permittee. "Corrective actions" are herein defined as proactive efforts which eliminate or reduce effluent toxicity. These include, but are Page 39