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OCTOBER 17,2005 NOA PROJECT NUMBER E05131A 2.0 WORKPLAN FOR MONITORING WELL INSTALLATION 2.1 Monitoring Well Locations Plate 10 is a scaled site map showing the location of the land application area,the proposed wastewater collection and discharge system, and the location of proposed monitoring wells. A total of three groundwater monitoring wells are proposed for the site (see Plate 10). The proposed well locations were selected to provide for one up-gradient well (MW-1) and two down-gradient wells (MW-2 and MW-3) based on the anticipated direction of groundwater flow. The down-gradient wells are situated immediately east of each of the areas (see Plate 10). The proposed well locations also provide a good spread of points for monitoring the direction of groundwater flow and to allow for future expansion of the land application areas at some locations. 2.2 Pre-Drilling Permits and Safety Meeting Prior to drilling,well drilling permits will be obtained from the San Joaquin County Environmental Health Department, and a check for any existing underground utilities shall be conducted at the drill locations. Also,a brief"tailgate safety meeting"will be conducted to inform the well installation crew of anticipated hazards and the emergency action plan for the site. On-site workers will have Level D personal protection equipment available to them. All drilling,well construction,and sampling activities will be conducted using modified Level D personal protection as appropriate for the activities being conducted. An example of Level D personal protective equipment to be used at the site includes hard hat, safety glasses, steel-toed boots,earplugs,disposable rubber gloves,and disposable overalls. In the event that an injury occurs to any or all of the monitoring well installation team, they could be transported to the nearest hospital that provides emergency room services (Lodi Memorial Hospital,800 Lower Sacramento Road,Lodi, Ca. 95242, 209-339-7575). Emergency 911 service is also available in the area. 2.3 Borehole Installation Boreholes are to be advanced to a depth of 60 feet below ground surface using 8-inch nominal diameter hollow stem augers. Soil samples will be collected at five foot intervals via a split-spoon sampler using California modified Standard Penetration Test. No soil samples are to be submitted for laboratory analysis. Monitoring well borehole cuttings will be disposed by spreading the cuttings on the ground surface in the locations determined by the property owner. Monitoring well drilling will be observed by an experienced geologist under the direction of a California Professional Geologist. The on-site geologist shall log and describe soil samples consistent with the Unified Soils Classification System, observe drilling procedures, watch for indications of groundwater during drilling, direct well construction activities,record materials used, and act as safety officer.The drill rig and all down-hole tools will be cleaned using a high-pressure, hot water wash prior to drilling. The rig will similarly be 3