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DDJC-Tracy Groundwater Monitoring Well Installation Work Plan I i I Table 1-1. Estimated Well Specifications, Well Installations, DDJC-Tracya Estimated Estimated Top Estimated Estimated Well of Screen Casing Casing and Well Slot Length of Well Depth Depth Diameter Screen Material Size(inches) Well Screen LM180A 40 ft bgs 30 ft bgs 2-inch SCH 40 PVC 0.010 10 feet f LM181B 70 It bgs 60 ft bgs 2-inch SCH 40 PVC 0.010 10 feet LM182A 40 ft bgs 30 ft bgs 2-inch SCH 40 PVC 0.010 10 feet LM183B 70 ft bgs 60 ft bgs 2-inch SCH 40 PVC 0.010 10 feet LM184A 40 ft bgs 30 ft bgs 2-inch SCH 40 PVC 0.010 10 feet LM185B 70 ft bgs 60 ft bgs 2-inch SCH 40 PVC 0.010 10 feet LM 186A 40 ft bgs 30 ft bgs 2-inch SCH 40 PVC 0.010 10 feet F LM187B 80 ft bgs 70 ft bgs 2-inch SCH 40 PVC 0.010 10 feet Well specifications will depend on the lithology encountered during drilling. ft bgs = feet below ground surface PVC = polyvinylchloride SCH = schedule 2.0 WELL INSTALLATION ACTIVITIES 2.1 Pre-Well Installation Activities Before any drilling is initiated,well installation permits and encroachment permits will be obtained from San Joaquin County Environmental Health and Public Works Departments. Clearance of aboveground and belowground utility hazards at all of the locations will also be obtained prior to drilling activities. 2.2 Field Documentation 2.2.1 The URS field geologist will maintain an accurate log for all the borings.At a minimum,the log shall include: • Name of the project and site; Boring number; Dates drilled; � 1 • Estimated GPS coordinates of the proposed boring location; II F, • Type of drill rig; • Size and type of drilling method used; • Depth at which groundwater was first encountered; �' KAWprwess\00732\Tracy\GWMW\Work Plan\Frnahllanta Road.doc 5 December 2005