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1 <br />' 25 February 2005 <br /> ,a AGE-NC Project No 95-0104 <br />' Page 9 of 10 <br />' inspection will be scheduled with EHD personnel <br />' 4 4 WELL DEVELOPMENT AND SURVEY <br /> Development of the proposed wells will consist of a combination of bailing with a stainless steel <br />' bailer to remove the mayor portion of fine-grained sediment from inside the well, surging to flush <br /> out or draw in sediment from the filter pack and additional ground water evacuation(purging)with <br /> a submersible pump to finish the removal of fine-grained sediment Developmental purging activities <br />' will be continued until field parameter(pH, electrical conductivity,and temperature)readings have <br /> stabilized and purged water is visually sediment-free <br />' Additionally, the well-head elevations will be surveyed by a California-licensed surveyor <br />' 4 5 EQUIPMENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly rinsed with clean water after being <br /> washed with a solution of Alconox All down-hole drilling and sampling equipment will be pressure <br /> washed prior to starting the boring <br /> I 4 <br /> 6 GROUND WATER MONITORING PROCEDURES <br /> Groundwater sample collection will be performed in accordance with EHD guidelines(San Joaquin <br /> County Environmental Health Department Well Standards) and CVRWQCB guidelines (Tri- <br /> Regional Water Quality Control Board Recommendations for Preliminary Investigations and <br /> Evaluation of Underground Storage Tanks) sampling protocols <br /> 4 b 1 Static Water Level Measurements <br /> Prior to all ground water purging and sampling, static water levels in each well will be measured <br /> using an electric water level indicator Water level data will be recorded to the nearest 0 01 foot from <br /> a reference point marked on the top of each PVC well casing Before and after each use, the <br /> measurement device will be rinsed with clean tap water <br /> I <br /> IAdvanced GeoEnvironmental,Inc <br />