Laserfiche WebLink
w <br /> 19 August 2013 <br /> AGE Project No. 04-1168 <br /> Page 2 of 3 <br /> as part of site investigations performed to date (Figure 2). Wells at the site have been <br /> installed to a total depth of 70 feet below surface grade (bsg; Appendix B). <br /> Utilizing historical soil and groundwater analytical data (Tables 1 and 2) and based on the <br /> limited number of wells installed at the site, AGE proposes to destroy all wells using <br /> over-drilling techniques. <br /> All site wells will be destroyed in accordance with San Joaquin County Environmental <br /> Health Department (SJCEHD), Standards for Well Construction & Destruction in San <br /> Joaquin County, dated February 2005 and in accordance with California Well Standards <br /> Bulletins 74-81 and 74-90. <br /> PROCEDURES <br /> As required, a health and safety plan will be prepared in accordance with Occupational <br /> Safety and Health Guidance Manual for Hazardous Waste Site Activities(National Institute <br /> for Occupational Safety and Health Administration, U.S. Coast Guard and U.S. <br /> Environmental Protection Agency, 1985). Prior to drilling activities, each proposed location <br /> will be clearly marked and an utility clearance will be obtained through Underground <br /> Service Alert. <br /> The required well destruction permits will be obtained from the SJCEHD priorto destruction <br /> activities. Before commencement of drilling, all wells will be checked for total depth and <br /> integrity using a Solinst water level meter. Any obstructions found in the well will be <br /> removed. <br /> Site wells MW-1 through MW-3 are proposed to be drilled-out to one foot deeper then their <br /> installed total depths utilizing 8.25-inch. All original well construction materials will be <br /> removed (including well casing, screen, filter pack, and annular seal) to ensure that no <br /> residual contamination is sealed within the abandoned borehole. Remaining boreholes will <br /> be backfilled to surface grade with neat cement and covered with concrete asphalt, <br /> depending on the surrounding surface material. <br /> Rinseate and soil cuttings generated during drilling and decontamination activities will be <br /> containerized in properly labeled Department of Transportation (D.O.T.)-approved <br /> 55-gallon drums and stored on-site until proper disposal is arranged to a suitable non- <br /> hazardous waste facility. Upon completion of field work and disposal waste, a report <br /> documenting the field activities and procedures, including documentation of waste <br /> disposal, will be prepared and submitted to the SJCEHD. <br /> Advanced GeoEnvironmental,Inc. <br /> Y <br />