Laserfiche WebLink
�� Cardno <br /> ER/ <br /> Shaping the Future° <br /> Cardno ERI <br /> License A/C10-611383 <br /> 601 N McDowell Boulevard <br /> January 16, 2012 Petaluma,CA 94954 <br /> Cardno ERI 278913.Q114 USA <br /> Phone 707 766 2000 <br /> Mr. James Barton, P.G. Toll-free 800 382 9105Fax 707 789 9414 <br /> California Regional Water Quality Control Board www.cardno.com <br /> Central Valley Region <br /> 11020 Sun Center Drive#200 www.cardnoeri.com <br /> Rancho Cordova, California 95670-6114 <br /> SUBJECT Groundwater Monitoring Report, Fourth 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 fourth 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 date: 11/30/11 <br /> Sampling dates: 11/30/11 and 12/01/11 <br /> Wells gauged and sampled: MW1 through MW8, DW1 through DW4, EX1, <br /> 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: 271 gallons purge and decon water delivered to <br /> InStrat, Inc., of Rio Vista, California on 12/01/11 <br /> Australia • Belgium • Canada • Ecuador • Indonesia • Kenya • New Zealand • Papua New Guinea <br /> Peru • United Kingdom • United Arab Emirates • United States • Operations in 70 countries <br />