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i <br /> Advanced <br /> GeoEnvironmental,-i Inc . �= - <br /> 06 January 2010 <br /> AGE-NC Project No. 98-0440 • . a, a� ,- L <br /> Ms. Lori Duncan <br /> San Joaquin County Environmental Health Department 'x ; <br /> 600 East Main Street _ �a <br /> Stockton, California 95202 <br /> Illi 4 H i <br /> Subject: Procedures for Well Destruction <br /> STRONG PROPERTY T <br /> 5157West Business Loop 205s Tracy, California <br /> Dear Ms. Duncan: -_ 4 <br /> At your request Advanced GeoEnvironmental, Inc. (AGE) has'prepared this document presenting <br /> the procedures for monitoring well destruction at 5157 West Business(Loop 205,Tracy,California. <br /> INTRODUCTION/BACKGROUND <br /> To date, a total of 13 groundwater monitoring wells(MW-1 through MW-13)have been advanced <br /> _ wells MW-1 though MW-12 screened from 5-25 feet <br /> off- and on-site. AGE proposes to drill-out we g <br /> or 10-30 feet)using a drill rig equipped with 8.25-inch hollow stem augers.AGE proposes to destroy <br /> deep-screened well MW-13 (screened from 69-79 feet) by pressure grout techniques. 1 <br /> PROCEDURES <br /> In order to ensure that ground water monitoring wells do not provide vertical conduits for ; <br /> contaminants, AGE proposes to properly destroy them in accordance with San Joaquin County <br /> Environmental Health Department (EHD) Standards For Well Construction and Destruction. As <br /> required by :EHD permitting, a health and safety plan will be prepared in accordance with <br /> Occupational Safety and Health Guidance Manual for Hazardous Waste Site Activities (National <br /> Institute for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. <br /> Environmental Protection Agency, 1985).Prior to drilling activities,each proposed drilling location <br /> will be clearly marked and an utility clearance obtained through Underground Service Alert. <br /> " checked for integrity, <br /> Based on the EHD Standards the wells will be sounded for total depth and c gr ty, � <br /> 837 Shaw Road, Stockton.California'95215 <br /> Telephone(209)467-1006 Fax(209)467-1118 <br />