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MONITORING AND REPORTING PROGRAM NO. 93-806 - 2 - SANTA 2 - SANTA FE PACIFIC PIPELINE PARTNERS, STOCKTON TERMINAL, SAN JOAQUIN COUNTY REPORTING Quarterly reports shall be submitted to the Board by the 30th day of the month following the end of each calendar quarter until such time that the Executive Officer determines that the reports are no longer necessary. Prior to startup of a ground water treatment system, the Discharger shall supply Board staff with a ground water monitoring program that will demonstrate the effectiveness of the ground water treatment system. An annual report evaluating the effectiveness and progress of investigation and remediation shall be submitted to the Board by 30 January of each year and may be substituted for the quarterly report for the fourth quarter. The report shall contain at a minimum the following information: both tabular and graphical summaries of the monitoring data obtained during the previous year; trends in the concentrations of the pollutants in ground water monitoring wells; whether the contaminant plume is being captured by an extraction system or is continuing to spread; plans as needed for improving the ground water monitoring, extraction or treatments stem; and an estimate of the potential reduction in petroleum hydrocarbon concentration that can be achieved by the implemented remedial action. The annual report shall also include the reasons for and durations of significant interruptions (occurrences lasting more than 48 hours) in the operation of treatment systems. 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. The gPro Discharger shall implement the above monitoring ram as of the date of this Order. g P g Uja . WILLIAM H. CROOKS, Executive Officer 9 August 1993 (date)