SITE INFORMATION AND CORRESPONDENCE_2001-2018

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MONITORING AND REPORTING PROGRAM NO.R5-2005-XXXX -2- SHELL 2-SHELL OIL PRODUCTS US,BULK FUEL TERMINAL STOCKTON, SAN JOAQUIN COUNTY SAMPLING FREQUENCY Quarterly Semi-annually2 Annually3 Wells MW-1 MW-10 MW-13R MW-15 MW-2 MW-3 MW-5 MW-8 MW-4 MW-6 MW-7 MW-16 MW-20 MW-22 MW-24 MW-11 MW-14 MW-16 MW-9 MW-12 MW-25 MW-27 MW-33 MW-34 MW-18 MW-21 MW-23 MW-19 MW-30 MW-35 MW-36 New Wells MW-26 MW-28 MW-29 DW-2 MW-31 MW-32 All wells shall be monitored quarterly for water levels and the presence and thickness of free product. 2 Wells shall be sampled semi-annually during the first and third quarters. ' Wells shall be sampled annually during the third quarter. Constituents EPA Analytical Method Maximum Practical Quantitation Limit" TPH as gasoline 8015M 50 T TPH as diesel 8015M 50 Benzene 8020 or 8260B 0.5 Toluene 8020 or 8260B 0.5 Ethylbenzene 8020 or 8260B 0.5 Xylene 8020 or 8260B 0.5 Dissolved Leads 7421 10 MT 3E6 8260B 0.5 TBA6 8260B 5 TAME6 8260B 0.5 DIPE6 8260B 0.5 ETBE6 8260B 0.5 Ethanol6 8260B 50 Methanol' 8260B 100 4 For nondetectable results in micrograms per liter. All concentrations between the Method Detection Limit and the Practical Quantitation Limit shall be reported as trace. s 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. r 6 Fuel oxygenates,including MTBE,TBA,TAME,DIPE,ETBE,ethanol, and methanol shall be analyzed in all monitoring wells during two monitoring events in the first and third quarters. If results are nondetectable for fuel oxygenates for both sampling events,no further monitoring for oxygenates is required in that well. If a fuel oxygenate is detected,it shall be added to the quarterly monitoring program for the well in which it was detected. REPORTING When reporting the data, the Discharger shall arrange the information in tabular form so that the T date, the constituents, and the concentrations are readily discernible. The data shall be summarized in such a manner as to illustrate clearly the compliance with this Order. In addition, the Discharger shall notify the Regional Board within 48 hours of any unscheduled shutdown of any soil vapor and/or groundwater extraction system. 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.