Laserfiche WebLink
G� Cardna <br /> ER/ <br /> Shaping the Future <br /> Cardno ERI <br /> License AIC10-611363 <br /> October 24, 2011 <br /> Cardno ERI 278913.Q113 601 North McDowell Blvd. <br /> Petaluma,CA 94954-2312 <br /> USA <br /> Mr. James Barton, P.G. Phone 707 766 2000 <br /> California Regional Water Quality Control Board Toll-free 800362 9105 <br /> Central Valley Region Fax 707 789 0414 <br /> 11020 Sun Center Drive#200 www.cardno.com <br /> Rancho Cordova, California 95670-6114 www.cardnoeri.com <br /> SUBJECT Groundwater Monitoring Report, Third Quarter 2011 <br /> Former Mobil Service Station 99CAS <br /> 75 East Alpine Avenue, Stockton, California <br /> INTRODUCTION <br /> At the request of ExxonMobil Environmental Services(EMES), on behalf of ExxonMobil Oil Corporation, Cardno <br /> ERI performed third quarter 2011 groundwater monitoring and sampling activities at the subject site. Relevant <br /> plates, tables, and appendices are included at the end of this report. Currently, the site is a vacant lot and a <br /> parking lot. <br /> GROUNDWATER MONITORING AND SAMPLING SUMMARY <br /> Gauging and sampling date: 09/22/11 <br /> Wells gauged and sampled: MW1, MW2, MW3, MW5, MW7, MW8, DW2, <br /> DW4 <br /> Wells gauged only: MW4, DW1, DW3, EX1, EX2 <br /> Presence of NAPL: Not observed <br /> Laboratory: Calscience Environmental Laboratories, Inc. <br /> Garden Grove, California <br /> Analyses performed: EPA Method 8015B TPHd, TPHg <br /> EPA Method 8260B BTEX, MTBE, TBA, DIPE, ETBE, TAME, EDB, <br /> 1,2-DCA <br /> EPA Method 6010B Arsenic, Calcium, Lead, Selenium (select wells) <br /> Waste disposal: 136 gallons purge and decon water delivered to <br /> InStrat, Inc., of Rio Vista, California on 10/07/11 <br /> Australia • Belgium - Indonesia • Kenya New Zealand • Papua New Guinea <br /> United Arab Emirates • United Kingdom - United States • Operations in 60 countries <br />