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Proposed Well Destruction Method Mw3� Frontier Transportation Facility 425 Larch Road,Tracy,California 95304 �6 Ptt- S Screened Well Destruction PIN 7 D� Well Interval DN_ q Interval Contamination B D� ib ID (ft b s) Soil Groundwater X 5-20 Yes g-y.y MW-3R s NX None one B &7 MW-6 s 6-20 X None None 6-20 � MW-7 s }( S4 ecu�ti 87 MW-10 s 5 None None-20 X '- i 5-20 None None X MW-11 s None None 1 �•7 — MW-12 d 30-40 None X v�.7 MW-14 d 30-40 Yes X 5 — MW-15 d 30-40 Yes None X None w 8_6 MW-16 d 30-40 Yes Yes X ,yi4 7 BMJ -DPE4 s 5-20 Yes Yes X mak// y DPE5 s 5-20 Yes X DPE7 s 5-20 Yes Yes Yes X �4 DPE9 s 5-20 Yes Yes X DPE10 s 5-20 None Notes: (s)=Shallow well,20 feet deep. (d)=Deep well,40 feet deep. All well casings are 2-inch diameter,PVC Schedule 40. All soil boring diameters are 8-inch. Well Destruction Methods: nation: Using 8-inch diameter l of the well lull A-Wells with soil and/or water contamisealant). Seal he cleared borehole with l with neat cement from the contents(casing, screen, filter pack, grout bottom upward to a depth of three to five feet below grade. ressure grout under 25 B-Wells neatcementout soil an vater contaminatcement from he bottom upward,whle leaving the well casing rin place Drilleouttthe top 3 to PtP 4 feet of the well with a 2-foot diameter auger.Remove an additional 6 inches of soil below the new(top) o Allow the grout sealant spill out of the top the cut-off casing. Remove and containerize the displaced water. es of the casing and form the mushroom caps al wicacement mseat ( inches low and d6 urface, above the top of the inch cut-off casing). P Well Destruction MethodrFABLE 3 EnviroMonitoring Services,Inc.