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MONITORING AND REPORTING PROGRAM NO.R5-2002-0220 3_ TEICHERT AGGREGATES TRACY ROCK PLANT SAN JOAQUIN COUNTY submitted to the Regional Board by 1 February each year. In addition to the data normally presented, the Annual Report shall include the following: 1. If requested by staff, tabular and graphical summaries of all data collected during the year; 2. An evaluation of the performance of the wastewater treatment system, as well as a forecast of the flows anticipated in the next year; 3. A discussion of compliance and the corrective actions taken, as well as any planned or proposed actions needed to bring the discharge into full compliance with the waste discharge requirements; 4. A discussion of any data gaps and potential deficiencies/redundancies in the monitoring system or reporting program; 5. A Water Balance and Capacity Calculation Report that demonstrates adequate storage and disposal capacity to ensure full compliance with the WDRs. The water balance shall evaluate the settling pond area's ability to provide sufficient capacity on a monthly basis, and shall consider evaporation, direct precipitation, storm water runoff contribution,percolation, and estimated rate of sedimentation. Rainfall amounts shall be based on the total annual precipitation based on a return period of 100 years, distributed monthly in accordance with historical rainfall patterns. Note that the established maximum daily percolation rate cannot exceed ten percent of the minimum saturated hydraulic conductivity and the evaporation rate cannot exceed 80 percent of the established pan evaporation rate for the area. For the purpose of this analysis, "full compliance"means maintaining two feet of freeboard in all ponds. A transmittal letter shall accompany each self-monitoring report. The letter shall discuss any violations during the reporting period and all actions taken or planned for correcting violations, such as operation or facility modifications. If the Discharger has previously submitted a report describing corrective actions and/or a time schedule for implementing the corrective actions,reference to the previous correspondence will be satisfactory. The transmittal letter shall contain a statement by the Discharger or the Discharger's authorized agent, under penalty of perjury, that to the best of the signer's knowledge the report is true, accurate, and complete. The Discharger shall implement the above monitoring program as of the date of this Order. THOMAS R. PINKOS, Executive Officer 6 December 2002 ALO:12/6/02 (Date)