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evaluated for the necessity of additional new well placements, see Appendix A _ Revised Pump <br /> Test Plan <br /> WELL DESTRUCTION METHODS <br /> San Joaquin County Public Health Services, Environmental Health Division (SJCPHS,EHD)- Well <br /> Standards 13 17 1 through 13 17 15 lists the requirements for destroying monitoring wells <br /> Based on the review of the above mentioned standards the wells will be destroyed in the following <br /> manner <br /> Drilling out - tremie grout <br /> Groundwater monitoring wells MW i, MW2, and MW3 contained soil contamination and or are in <br /> close proximity of the area to be excavated These wells will be destroyed as follows Remove the <br /> traffic box and concrete pad, drilling out the entire well system (casing, filter pack and sanitary <br /> seal), then fill the excavation with neat cement containing 5% bentonite by tremie method, to the <br /> existing surface The surface will be patched with quick set concrete, see Appendix B - Well <br /> Construction Logs <br /> EXCAVATED SOILS AND FLUIDS <br /> All excavated soils will be temporarily stored on-site within a fence compound, placed on plastic <br /> liner and covered for later disposal and/or treatment <br /> All fluids generated during the excavating will be placed into 55 gallon 17H DOT drums The <br /> fluids will be processed through carbon and discharged to sewer dust prior to the pump test and <br /> after receipt of the sewer discharge permit, see Appendix C <br /> NOTIFICATIONS <br /> Upon approval of this workplan and obtaining of all necessary permits a 48-hour notice will be <br /> given to all concerned parties pnor to start of any site activities <br /> LIMITATIONS <br /> The information presented in this report is based on the following <br /> 1 The observations and data collected by field personnel <br /> 2 The result of laboratory analyzes performed by a state certified analytical laboratory <br /> 3 Our understanding of the regulations of San Joaquin County, the City of Stockton and the <br /> State of California <br /> 4 References reviewed for this report <br /> Changes in groundwater conditions can occur due to variations in rainfall, temperature, local and <br /> regional water use and local construction practices In addition, variations in the soil and <br /> groundwater conditions could exist beyond the points explored in this investigation <br /> 3 Sanchez Wel I Dest 1-10-02 <br />