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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD CENTRAL VALLEY REGION MONITORING AND REPORTING PROGRAM NO. Kh4"It `° ; � FOR MAY 1 $ 1993 SIMPSON INVESTMENT COMPANY SIMPSON PAPER COMPANY ENVIRQNMFNTAL NgALTH RIPON MILL PERMIT/SERVICES SAN JOAQUIN COUNTY Existing monitoring wells show that the past discharge from the Ripon Mill has degraded groundwater quality. The Discharger has made substantial improvements in the quality of wastewater which it discharges. This is a Corrective Action monitoring program, the purpose of which is to determine whether measures taken by the Discharger are sufficient to clean up the effects of past waste discharges to ground water and to determine if the continued discharge of wastewater to land needs to be contained in a waste management unit described in California Code of Regulations, Title 23, Division 3, Chapter 15 (Chapter 15) . Currently the discharge is not classified as a designated waste due to analysis and certification by David A. Lawrence, C.E.G. 618. This monitoring program will serve to verify that decision. REPORTING In reporting the monitoring data, the Discharger shall arrange the data in tabular or graphical form so that the date, the constituents, and the concentrations are readily discernible. The data shall be summarized in such a manner to illustrate clearly the compliance with waste discharge requirements. Monthly monitoring reports shall be submitted to the Regional Board by the 20th day of the following month. The results of any monitoring done more frequently than required at the locations specified in the Monitoring and Reporting Program shall be reported to the Board. Upon written request of the Board, the Discharger shall submit a report to the Board by 30 January of each year. The report shall contain both tabular and graphical summaries of the monitoring data obtained during the previous year. In addition, the Discharger shall discuss the compliance record and the corrective actions taken or planned which may be needed to bring the discharge into full compliance with the waste discharge requirements. SAMPLING AND ANALYSIS PLAN A Sampling and Analysis Plan shall be submitted to Board staff by 1 July 1993 for approval . The sampling and analysis plan shall include specific methods for leachate, surface water, ground water, and vadose zone pore fluid water quality, sample collection, handling, chain of custody control , analytical procedures, and field and laboratory quality assurance and quality control .