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0 <br /> 10 August 1999 <br /> i AGE-NC Project No 97-0333 <br /> ' Page 8 of 9 <br /> ' pound sack of cement The grout will be placed by pumping through tremmie pipe A grouting <br /> inspection will be scheduled with PHS-EHD personnel <br /> 43 WELL DEVELOPMENT <br /> Development of the proposed AS well will consist of a combination of bailing to remove the mayor <br /> portion of fine-grained sediment from inside the well, surging to flush out or draw in sediment from <br /> the filter pack and additional bailing to finish the removal of sediment Development activities will <br /> be continued until field parameter (pH, electrical conductivity, and temperature) readings have <br /> stabilized and purged water is visually sediment-free <br /> 4 4 EQUIPMENT Q ENT DECONTAMINATION <br /> All sampling tools used for sample collection will be thoroughly rinsed tiNith 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 /> 45 GROUND WATER PUMP TEST PROCEDURES <br /> A forty-eight hour drawdown pilot test will be performed to evaluate feasibility of ground water <br /> ' drawdown in conjunction with SVE <br /> A two-Inch ground water draw down pump will be placed at the bottom of a selected on-site ground <br /> water monitoring well and utilized to induce a decline in static water level, submersible pressure <br /> transducers and transmitters will be deployed in nearby wells to measure difference in ground water <br /> ' levels before well pu3nping versus during well pumping Ground water levels will be continuously <br /> monitored by a four-channel analog data logger, ground water pumping rates will be increased at <br /> regular intervals to achieve optimum pumping rate for the greatest draNkdowrn influence <br /> iPurged ground water will be contarnenzed in a 10,000-gallon Baker tank, a composite"grab" ground <br /> water sample will be collected from the Baker tank for analysis of TPH-g„ BTEX and MTBE "Fhe <br /> purged ground water will be discharged Into the City of Manteca sewer system upon regulatory <br /> approval or will be transported to a suitable hazardous waste disposal facility <br /> 4d%ancedGeoFnkironmental, Inc <br />