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l <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> CENTRAL VALLEY REGION <br /> MONITORING AND REPORTING PROGRAM NO. <br /> CHEVRON PIPELINE COMPANY <br /> CORRAL HOLLOW AND GRANT LINE RO' <br /> TRACY, SAN JOAQUIN COUNTY <br /> Petroleum hydrocarbons contaminate the soil and ground ;ogre Chevron line leak si <br /> near the corner of Corral Hollow and Grant Line Roads ' Tracy.�` he extent of the <br /> contamination is fairly well defined. Prior to construc. nP�aanc: " ecifications for ground <br /> y �, `• a <br /> water monitoring and/or extraction,wells sha11'be`sub ttec` d s for review and <br /> approval. After construction, new wells are to be sam I and analyze or the constituents <br /> below and added to the monitoring program. �``` '�% <br /> GROUND WATER MONITORING <br /> There are eleven ground water monitoringvells at the si shown in Figure 1. Monitoring <br /> wells with free phase petroleum product si been sha monitored for product <br /> thickness and depth to ground water onl a water toring program for the wells, <br /> and any additional wells installed subsec� m yx t w containing free phase petroleum <br /> product or visible sheen, shall include the foll• ing� ' <br /> jZ' Pjre ­ation ' �um Detection <br /> Constituents ;w„ lvtica`Methods Limit(001)' Sampling FreQuencX <br /> Benzene3, 0/8020 0.3 Quarterly <br /> Toluene5030) 3'l 0.3 Quarterly <br /> E y ene . - =' 5030/8o,46- - __ _ 0:3.< _ —Quarterly <br /> S <br /> ,a> <br /> xyleneQ3�$020 0.6 Quarterly <br /> TPIlas Gasoline-`--,,,,., 5030/8015M 50 Quarterly <br /> t `PH? Il ,el 510/3630B/8015M 50 Quarterly <br /> ,ti 01 <br /> NZ <br /> Lead2 •. ;1 239.2 15 Quarterly <br /> ' ondetectabWresults. <br /> For wel its=7,MW-10 and MW-11. if lead is not-detected during,the first round of sampling,then no <br /> further analyses for lead is required. <br />