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I <br />' 12 January 2005 <br /> • AGE-NC Protect No 97-0326 <br />' Page 4 of 11 <br />' 2 1 7 Waste Disposal <br /> On 13 January 2004 American Valley Waste Oil, Inc of Delhi, California collected approximately <br /> 330 gallons of purge water from the site The purge water was transported under non-hazardous <br /> waste manifests to Seaport Environmental of Redwood City, Califorma,an EPA-approved disposal <br /> facility A copy of the waste disposal manifest is included in Appendix E <br />' On 22 April 2004,twenty-four 55-gallons drums of non-hazardous soil,generated during monitoring <br /> well installation,was disposed by Filter Recycling Services, Inc of Rialto, California The soil was <br />' disposed at the Filter Recycling Services facility in Rialto, California A copy of the waste disposal <br /> manifest is included in Appendix E <br />' 22 QUARTERLY WELL MONITORING PROCEDURES <br />' The quarterly ground water monitoring event was performed on 07 April 2004, ground water <br /> monitoring was performed on monitoring wells MW-1 through MW-9 <br /> 2 2 1 Well Monitoring and Evacuation <br />' On 07 April 2004,the depth to ground water in all monitoring wells was measured from the top of <br /> each well casing to the nearest 0 01-foot utilizing a Solinst water level meter Ground water elevation <br /> in each well was calculated by subtracting the measured depth to ground water from the surveyed <br />' casing elevation (Table 2) <br />' After water levels were measured, a Watera hydrohft pump was used to purge each well Between <br /> 6 and 9 5 gallons of water(a minimum of 3 casing water volumes per well)were purged from single- <br /> level wells MW-1 through MW-3 and MW-7,and between 0 45 and 3 75 gallons were purged from <br />' multi-level wells MW-8 and MW-9 Groundwater temperature,pH and conductivity were measured <br /> at regular intervals during purging using an Oakton water analyzer Purged ground water was <br /> containerized in properly labeled DOT-approved 55-gallon drums and stored on-site Field sheets <br /> and data are included in Appendix F <br /> During well purging, free product was observed in well MW-1 A disposable bailer was used to <br />' remove the free product <br />' Advanced GeoEnvi ron mental,Inc <br />