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MONITORING AND REPORTING rROGRAM No. 5-01-841 WOOLSEY OIL COMPANY BULK FUEL PLANT SAN JOAQUIN COUNTY TABLE 1 -2- 1 All wells will be monitored quarterly for water levels and the presence and thickness of free product. Z Wells will be sampled semi-annually during the second and fourth quarters. SAMPLING FREQUENCY' Maximum Quarterly Semi-annually' Wells MW -3 MW -5 MW -6 MW -9 New Wells MW -2 MW -4 MW -8 MW -7 MW -10 1 All wells will be monitored quarterly for water levels and the presence and thickness of free product. Z Wells will be sampled semi-annually during the second and fourth quarters. 1 For nondetectable results. z If dissolved lead is detected, the Discharger shall perform verification sampling within 30 days of submittal of the monitoring report. If lead pollution is verified, the Discharger shall continue quarterly monitoring for dissolved lead. If the presence of dissolved lead is not confirmed, no further test is required. 3 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. 4 Volatile Organic Compounds (VOCs) shall be analyzed in all monitoring wells during one monitoring event. If results are nondetectable for VOCs in all wells, no further monitoring for VOCs is required. If a VOC is detected, it shall be added to the quarterly monitoring program for the well in which it was detected. Analytical Maximum Constituent Method Detection Limit' Depth to water ---- ---- Benzene 8020 or 8260B 0.5 µg/l Toluene 8020 or 8260B 0.5 µg/l Ethylbenzene 8020 or 8260B 0.5 µg/1 Xylenes 8020 or 8260B 0.5 µg/1 Total Petroleum Hydrocarbons 8015M 50 µg/1 as diesel Total Petroleum Hydrocarbons 8015M 50 µg/l as gasoline Dissolved Lead 7421 10 µg/l MTBE' 8260B 0.5 µg/1 TBA' 8260B 0.5 µg/1 DIPE' 8260B 0.5 µg/1 TAME' 8260B 0.5 µg/1 ETBE' 8260B 0.5 µg/1 Methano13 8260B 50 µg/1 Ethanol' 8260B 5 µg/1 Volatile Organic Compounds4 8260B 0.5 µg/l 1 For nondetectable results. z If dissolved lead is detected, the Discharger shall perform verification sampling within 30 days of submittal of the monitoring report. If lead pollution is verified, the Discharger shall continue quarterly monitoring for dissolved lead. If the presence of dissolved lead is not confirmed, no further test is required. 3 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. 4 Volatile Organic Compounds (VOCs) shall be analyzed in all monitoring wells during one monitoring event. If results are nondetectable for VOCs in all wells, no further monitoring for VOCs is required. If a VOC is detected, it shall be added to the quarterly monitoring program for the well in which it was detected.