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EXCE�TECH <br /> Monitoring Well and Extraction Well Abandonment October 15, 1987 <br /> Kayo Oil Company- Fast Gas Station <br /> 800 East Highway 12 <br /> Lodi, California <br /> PROPOSED MONITORING WELL ABANDONMENT PROCEDURE-2-INCH DIAMETER WELLS <br /> 1. Secure approved permits from the San Joaquin County Health District. The proposed well <br /> destruction procedure would be amended and observed as required by the District. <br /> 2. Review any available monitoring well details to determine depth and original construction <br /> details and borehole depths. <br /> 3. Drill out the existing monitoring well installation with 82-inch diameter drill bit on 8-inch <br /> diameter hollowstem auger. <br /> 4. Advance drill-out boring to a point about 0.5 foot belew the original total well depth, slightly <br /> deeper it the original boring log so indicates. <br /> 5. Backfill the now open borehole with a bentonite-cement from the bottom to the top of the <br /> boring. <br /> 6. Abandonment procedure for additional 2-inch diameter wells similiar to that described above. <br /> k <br /> .4 <br /> PROPOSED EXTRACTION WELL ABANDONMENT PROCEDURE- 24-INCH DIAMETER WELL <br /> 1. Secure required permits from San Joaquin County Health District, and amend procedure as <br /> as required by the District review. s <br /> 2. Review boring log and well detail, if available. R <br /> .3.."Drill out well base using drilling method. Khl <br /> C4, Once the base is drilled out to the desired depththe 6vc�`eTaVsai <br /> remove the annulus gravel pack, and flush the gravel to the surface, will be employed to <br /> 5. Upon removing the gravel, the casing removal and surface annulus seal removal will be <br /> attempted. <br /> 6.i Upon removing the casing, the borehole will.be backfilled frorr to top with a <br /> cementgraut I„3c(� AAe�e�s ta�rr�,t- mu7`` rr v�'��r�iPw7�S, �Ef <br /> 41674 CHRISTY STREET FREMONT) CA 94538 t <br /> PHONE (415) 659-0404 • CONTR. LIC. NO. 464324 <br />