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Bid Request, Well Destructions San Joaquin County T Pic roup, InEnvironmental Health Department DIRECTOR neran, REHS 4 '4' ' y Rd. Suite H 600 East Main Street �. ss. A 95949 Stockton, California 95202-3029 PROGRAM COORDINATORS Robert McCleilon,REHS Or D' ite 110 Nofth FilbertStreet,-- Jeff Carruesco, REHS, RDI Sornia Website: www.sjgov.org/ehd Kasey Foley,REHS IV Phone: (209) 468-3420 Please provide cost per foot for well des rVHi&*MffNV8 General Information A total of 40 boreholes are located on and off-site consisting of 59 casings. Off-Site Boreholes located off-site will need to be pressure grouted from total depth to 5 feet below ground surface (ft-bgs). The top five feet over-drilled using the original size borehole drill bit. Nested wells off- site can also be destroyed in the same matter. On-Site Non nested wells located on-site will need to be over-drilled to total depth using the original size borehole drill bit. Nested wells on-site will need to be destroyed by wire line explosives. Local oversight requires nested well destruction to utilize a larger diameter auger than original borehole. As shown in attached table nested wells can reach depths'-up to 150 ft-bgs and would require a 12-14 inch auger. Sediment Removal In addition, wells highlighted on the''table have sediment obstructing the screened interval. The sediment will need to be removed before commencing well destructions as required by the county. Waste Waste derived from well destruction activities will disposed of in drums on-site. Site Characteristics All on-site features are located within a locked fenced area. There is no water available on-site, but there is electricity. Off-site locations are located either in Caltrans or City of Stockton right of way. SGI will procure necessary encroachment and destruction permits. I have attached a Site Plan showing well locations and a table detailing well depths and borehole diameters.