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MONITORING AND REPORTING PROGRAM NO.R5-2004-0820 SOUTH SHORE PARCELS,L&M OPERABLE UNIT CONOCOPHILLIPS PETROLEUM COMPANY;CHEVRON,U.S.A.; TEXACO REFINING AND MARKETING,INC.;TOSCO CORPORATION; L&M PETROLEUM COMPANY,INC.;AND MR.BILLY MCKINNON STOCKTON.SAN JOAQUIN COUNTY groundwater also shall be provided in monitoring reports. Sample collection and analysis shall follow standard EPA protocol. Maximum Detection Sampling Constituents EPA Analytical Method Limit(jtgfl)' FrecmenW Depth to Groundwater .-- -- Quarterly Volatile Organic Compounds 802 IB or 8260E 0.5 Quarterly Semivolatile Organic Compounds •8270 various3 Quarterly TPH as Gasoline 8015M 50 Quarterly TPH as Diesel(Extractable) 8015W 50 Quattarly TPH as Motor Oil(Extractable) 8015M, S0 Quarterly Benzene 8020 or 8260E 0.5 Quarterly Toluene 8020 or 8260B 0.5 Quarterly Etbylbenzme- 8020 or 8260B 0.5 Quarterly Xylene 8020 or 9260B 0.5 Quarterly Dissolved Metalss 666on000 various3 Semi-annually6 MTBE' 8260B 0.5 Quarterly TBA7 8260B 5 Quarterly TAME 82608 0-5 Quarterly DIPE7 826013 0.5 Quarterly Ene 82608 0.5 Quarterly Ethanol'• 8260B 50 Quarterly MethanoIr 8260B too Quarterly For nondetectable results. 2 Groundwater level measurements for all South Shore Parcel monitoring wells shall be collected within an eight-hour period Groundwater sampling activities for all wells requiring sampling sball be collected within five days. If the OUs are collecting water levels and performing sampling separately,the activities must be coordinated to meet these requirements. 3 Maximum detection limits must meet or be lower than the pp a licable crater quality objective,unless this is not achievable by an EPA or State approved laboratory method. See Table 2 for a list of applicable water quality objectives. 4 Without silica gel cleanup. S Dissolved metals to be analyzed include antiniony,arsenic, yze y beryllium,cadmium,chromium,copper,mercury,nickel,lead, seleaium,silver,thallium,and zinc. 6 Serni-annual sampling shall be conducted during the fust and third quarters. Fuel oxygenates,including methyl tertiary butyl ether(MTBE),methanol,ethanol,tertiary butyl alcohol(TBA),tertiary amyl methyl ether(TAME),di-isopropyl ether(DIPE),and ethy3 tertiary butyl ether(ETRE),shall be analyzed in all monitoring wells during first and third quarter monitoring eveats. If results are nondetedable for fuel oxygenates in all wells during both monitoring events,no further monitoring for oxygenates is requited_ If a fuel oxygenate is detected is either monitoring event,it shall be added to the quarterly monitoring program for the well in which it was detected REPORnNG When reporting the 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 manner as to illustrate clearly the compliance with this Order. In addition,the Discharger shall notify the Board within 48 hours of any unscheduled shutdown of any soil vapor and/or groundwater extraction systern-