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CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. <br /> CHEVRON PIPELINE COMPANY <br /> ALDEN PARK PROPERTY <br /> TRACY, SAN JOAQUIN COUNTY r1` <br /> s <br /> Petroleum hydrocarbons contaminate the soil and exist as free product odtoof the groiidaate <br /> '= <br /> at the former Chevron site at Alden Park in Tracy. Prior to G.can �tion,plass aspecification ' <br /> for groundwater monitoring and/or extraction wells shalJ�' submf ted to Board sta" for revi�vv <br /> and approval. After construction, new wells are to be s mpled*aH:a at lyzed for the coII l rients <br /> w <br /> below and added to the monitoring program. : <br /> GROUNDWATER MONIT G N' <br /> �. 1 <br /> There are 22 groundwater monitoring wells at the site as shown in Fig re ),O,vlonitoring wells <br /> with free phase petroleum product or visible s11 `s11 be monitored�'or$roduct thickness and <br /> depth to groundwater only. The groundwat&monitoriri wrogram for the wells, and any <br /> additional wells installed subsequently, ecce ` a ;wells contaming free phase petroleum product <br /> or visible sheen, shall include the following <br /> P. 11. <br /> EPA Preparation anet Ma3tm{lm Detection <br /> Constituents Anal81 Methodsv Irgnit(ue/11' Sampling Frequency <br /> 00 <br /> Benzene < 503018020 ' 0.3 Quarterly <br /> Toluene ,£: s�03t)/8020 0.3 Quarterly <br /> All J.. <br /> Ethylbenzene 5 8 0.3 Quarterly <br /> Xyt 5030/802Q' 0.6 Quarterly <br /> TP, H as .olive 30/BtIISM 50 Quarterly <br /> Was Dieser,.. 3510 3011/8015M 50 Quarterly <br /> TPH. a.& rude Oil "`%w;-1510/3630B/8015M 50 Quarterly <br /> olyicleaz somatic 8310 01 to 0.7 Quarterly <br /> >Hydrock, <br /> ons : <br /> l ead2239.2 15 Quarterly <br /> For nondetectable results. <br /> ' If lead is not detected during the fust round of sampling,then no further analyses for lead are required. <br />