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bentonite tnmied from 20 to 1 foot below surface A traffic rated flush mounted well vault was set in concrete from 1 foot to surface, see Appendix E MWBA was installed three feet east of MWBB MWBA was drilled with 8 inch hollow stem augers to a total depth of 19 feet below the surface Five feet of 0 01 slot screen was installed from 18 5 to 13 5 feet below the surface Number 2/12 sand was used as a filter pack from total depth (19') to 12 5 feet below the surface Hydrated bentonite was placed above the sand to form a sanitary seal from 9 5 to 12 5 feet below the surface The remaining annular space was filled with neat cement with 5% bentonite tremmd from 9 5 to I foot below surface A traffic rated flush mounted well vault was set in concrete from 1 foot to surface, see Appendix E MWI0-EXCAVATION WELL On June 24, 2004 Woodward Drilling used their AMS PowerProabe 9630 Pro-D direct push, rotary rig with 10 inch hollow stem augers to drill into the pea gravel backfilled excavation area to install a 4 inch diameter groundwater monitoring well From the 24 foot depth to the 28 foot depth a 1 inch core barrel was driven to determine the depth of the termination of the excavation and top of the native clay_ The core was examined and showed the top of clay at 28 feet below the surface The boring was drilled to the 28 foot depth to install well MW10 A MrnnRae PID (10 6 e v bulb) was used to determine if gravel, sods and groundwater contained volatile organic compounds MWIO is a 4 inch diameter sch 40 PVC well with twenty feet of screen The screen is comprised of five feet of 0 02 inch slot from total depth (28 feet) to 23 feet below the surface, ten feet of 0 06 inch slot from 13 to 23 feet below the surface and five feet of 0 04 slot from 8 to 13 feet below the surface Nwnber 3 sand was used as a filter pack from total depth, 28 feet below the surface to 23 feet below the surface The removed pea gravel was placed back through the augers from 6 feet to 23 feet below the surface Hydrated bentonite was placed above the pea gravel to form a sanitary seal from 5 to 6 feet below the surface The remaining annular space was filled with neat cement with 5% bentonite from 2 75 to 5 foot below surface A pre existing traffic rated flush mounted well vault (three feet deep by three feet wide and three feet long was set in concrete to surface Bentonite chips were placed on the floor of the vault and hydrated (two inches thick) Neat cement with 5% bentonite was placed above the hydrated bentonite seal to 2 75 feet below the surface, see Appendix E Once the wells were installed and developed, groundwater samples were obtained from all active wells associated with 1876 Country Club Blvd during this quarter (July 15, 2004) As requested by San Joaquin County Health, WEGE and Advanced GeoEnvrronmental, Inc (AGE) are to coordinate depth to water and groundwater samples on the same date. WEGE monitored and sampled wells associated with the Sanchez Property, 1876 Country Club Boulevard AGE obtained depth to water measurements from the monitored wells associated with Country Club Food and Fuel, 1856 Country Club Boulevard Figure 3 - Site Base Map has been expanded to show the relative positrons of the Country Club Food and Fuel wells to the Sanchez Property wells Field notes from site monitoring and sampling can be found in Appendix A 6 Sanchez QM 3rd 2004