ARCHIVED REPORTS_XR0007549 - Laserfiche WebLink

Home Browse Search

I24 January 2003 AGE-NC Project No 99-0657 ' Page 3 of 7 2 1 5 Monitoring Well Development On 04 October 2002, monitoring wells MW5 through MW8 were developed utilizing a stainless ' steel hand bailer and an Inertia pump Ground water was purged from each monitoring well until ground water was visually sediment free Between three and twelve gallons of water were removed from the wells,however,wells MW5 and MW6 were purged near dry before achieving three casing- water volumes, suggesting slow recharge in these wells Ground water temperature, pH and conductivity were measured at regular intervals during purging using an Oakton water analyzer Field sheets and data are included in Appendix C Purged water was stored on-site in properly labeled, 55-gallon Department of Transportation(DOT)-approved drums 2 1 6 Well Head Survey On 21 November 2002, a California state-licensed survey engineer from Baumbach &Piazza, Inc Isurveyed the elevation at the top of the well casing of monitoring wells MW5 through MWS to the nearest 0 01-foot relative to City of Lodi Bench Mark#344, surveyed at 41 50 feet above mean sea level (MSL) The results of the monitoring well survey are contained in Table 1 The surveying report (Baumbach & Piazza, Inc ) is presented in Appendix D I2 17 Soil Disposal I On 05 December 2002, nine 55-gallon drums of soil cuttings were removed from the site by Filter Recycling Services, Inc The soil cuttings were transported under manifest to Filter Recycling Services, Inc in Rialto, California The non-hazardous waste manifest is presented In Appendix E I 2 2 QUARTERLY WELL MONITORING PROCEDURES fThe quarterly ground water monitoring event was performed on 04 October 2002, ground water monitoring was performed on monitoring wells MW-1 through MW-8 2 2 1 Well Monitoring and Evacuation On 04 October 2002,the depth to ground water in all eight monitoring wells was measured from the p top of each well casing to the nearest 0 01-foot utilizing a Solinst water level meter Groundwater elevation in each well was calculated by subtracting the measured depth to ground water from the • surveyed casing elevation (Table 1) ' Advanced GeoEnviron mental,Inc I