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MONITORING AND REPOKTING PROGRAM NO. R5- - 2 <br /> ST SERVICES, L.L.C. AND NUSTAR ENERGY L.P. <br /> BULK FUEL TERMINAL#29 <br /> STOCKTON, SAN JOAQUIN COUNTY <br /> SAMPLING FREQUENCY <br /> Quarterly Semi-annual IY2 Annually <br /> Wells PS/MW-14, PS/MW-15, PS/P- OW-8A, OW-813, PS/WC-4M, OW-61D, <br /> 11, PS/P-12, PS/P-13, PS/WC- OW-8C, PS/MW-17, OW-7A, OW-713, <br /> 2S, ST/MW-1, UP/MW-1, ACA- PS/MW-19, PS/P-21 , OW-7C, OW-7D, <br /> 1A, ACA-1 B, ACA-2A, ACA-2B, PS/WC-2M, PS/WC-3M, PS/WC- <br /> New Wells I PS/WC-4S 3S <br /> All wells shall be monitored quarterly for water levels and the presence and thickness <br /> of free product. Groundwater level measurements for all Stockton Terminals <br /> Technical Committee and ST Services, LLC monitoring wells shall be collected on the <br /> same day and all groundwater monitoring samples shall be collected during the same <br /> week. <br /> 2 Wells shall be sampled semi-annually during the first and third quarters. <br /> 3 Wells shall be sampled annually during the third quarter. <br /> Constituents EPA Analytical Method Maximum Detection Limit (pg/1)4 <br /> Depth to groundwater --- --- <br /> TPH as diesel 8015M 50 <br /> TPH as diesel 8015M 50 <br /> Benzene 8020 or 8260B 0.5 <br /> Toluene 8020 or 8260B 0.5 <br /> Ethylbenzene 8020 or 8260B 0.5 <br /> Xylenes 8020 or 8260B 0.5 <br /> MTBE5 8260B 0.5 <br /> TBA' 8260B 5 <br /> TAME' 8260B 0.5 <br /> DIPE' 8260B 0.5 <br /> ETBE5 8260B 0.5 <br /> Ethanols 8260B 50 <br /> Methanols 8260B 100 <br /> 4 For nondetectable results. <br /> 5 Fuel oxygenates, including MTBE, TBA, DIPE, tertiary amyl methyl ether (TAME), ethyl <br /> tertiary butyl ether (ETBE), ethanol, and methanol shall be analyzed in all monitoring <br /> wells during two monitoring events in the first and third quarters at the maximum <br /> detection limit shown in the table. If results are nondetectable for fuel oxygenates for <br /> both sampling events, no further monitoring for oxygenates is required in that well. If a <br /> fuel oxygenate is detected, it shall be added to the monitoring program for the well in <br /> which it was detected. Monitoring wells that have already eliminated fuel oxygenate <br /> monitoring based on previous MRP requirements do not need to be resampled for fuel <br /> oxygenates. <br /> REPORTING <br /> When reporting the data, the Discharger shall arrange the information in tabular form so <br /> that the date, the constituents, and the concentrations are readily discernible. The data <br />