SITE INFORMATION AND CORRESPONDENCE

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MONITORING AND REPORTING PROGRAM NO. 5-00-824 -2 - TOWER PARK MARNA SAN JOAQUIN COUNTY Analytical Maximum g Sampling Constituent Method Detection Limit' Frequency Depth to water - Quarterly j Benzene' `' f ' '='1 •8020 or.8260 `"r `' 0.5'µg/1 '} Annually'`3 Toluene 8020 or 8260 0.5 µg/1" Annual ly''3 Ethylbenzene 8020 or 8260 O:!.5 µg/1 Annually' 3 Xylenes 8020 or 8260 0`.5 µg/l Annually',3 Total Petroleum Hydrocarbons 8015M 50 µg/l Quarterly/Annually'' ' as diesel Total Petroleum Hydrocarbons 8015M 50 µg/l x Quarterly' as gasoline . MTBE6 8260 . 0,5 µg/1:. '. Quarterly6• DIPE6 6;., ra;8260`,.:' 0.5`µA ; Quarterly ETBE6 8260- -0:5µg/1 Quarterly TBA6 8260 5 µg/1 Quarterly6 TAME �. 8260 05-.µg/1#" r . Quarter . Methanol6 w r , , 8260 �: 50 µg/1 r' Quarterly6 Ethanol6 8260 5 µg/1 ;rP Quarterly6 'For nondetectable results. z MW-3 shall be monitored quarterly, if no free product is present. 3 Annual sampling shall occur during the first quarter. °MW-1 and MW-2 shall be analyzed,annually for TPHd. MW-4 and MW-3 (if no free product is present) shall be ,s analyzed quarterly. s Analyze only in MW-3 when no free product is,present. 6 Fuel oxygenates, including MTBE,methanol,ethanol, tertiary butyl alcohol(TBA), tertiary amyl methyl ether(TAME), di-isopropyl ether(DIPE),and.ethyl tertiary butyl ether(ETBE)shall be analyzed in all monitoring wells during one monitoring event. If results are nondetectable for fuel oxygenates in all wells,no further monitoring for oxygenates is required. If a fuel oxygenate is detected, it shall be added to the quarterly monitoring program for the well in which it was detected. r I REPORTING ,.Q . 1 When reporting data, the Discharger shall arrange the information in tabular form so that the date, the constituents, and the concentrations are readily discernible. The data shall be summarized in such a j manner as to illustrate clearly the compliance with this Order. . < As required by the California Business and Professions Code Sections 6735, 7835, and 7835.1, all reports shall be prepared by a registered professional or their subordinate and signed by the registered professional. Semi-annual reports shall be submitted to the Board by the 30th day of the month following the end,of the first and third calendar quarter (i.e., by 30 April and 30 October) until such time as the Executive Officer determines that the reports are no longer necessary. Each semi-annual report is to include the following minimum information: