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14 November 2014 <br /> AGE Project No . 07- 1529 <br /> Page 6 of 6 <br /> auger. A grouting inspection will be scheduled with EHD personnel prior to any <br /> application of grout. <br /> WELL DEVELOPMENT <br /> Development of the proposed wells will consist of a combination of bailing with a <br /> stainless steel bailer to remove the major portion of fine-grained sediment from inside <br /> the well , surging to flush out or draw in sediment from the filter pack, and additional <br /> groundwater evacuation with a Waterra inertia pump to finish the removal of fine- <br /> grained sediment. Developmental purging activities will be continued until field <br /> parameters (pH , electrical conductivity , and temperature) have stabilized and purged <br /> water is visually sediment-free . <br /> EQUIPMENT DECONTAMINATION/WASTE MANAGEMENT <br /> All sampling tools will be thoroughly rinsed with clean water after being washed with a <br /> solution of Alconox . All down-hole drilling equipment will be pressure washed prior to <br /> starting each boring . Rinseate and soil cuttings generated during drilling and <br /> groundwater sampling activities will be containerized in properly labeled , Department of <br /> Transportation (DOT)-approved 55-gallon drums and stored on-site in an area lacking <br /> public access . Disposal alternatives will be evaluated based on the results of soil <br /> analysis . <br /> If you have any questions or require further information , please contact our office at <br /> (209) 467- 1006 . <br /> Sincerely, Sg°aat cEo<o <br /> QQ°F�\PM R . <br /> Advanced GeoEnvironmental , Inc. 3 e <br /> * No. 7473 <br /> ZL jol P%de� <br /> Daniel Villanueva _ William R . Little <br /> Project Geologist Senior Project Geologist of M�F°� <br /> Professional Geologist No . 743- " <br /> Advanced GeoEnvironmental, Inc. <br />