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a�iAIVVArmU <br /> lyre Working To Restore Nature <br /> DEC <br /> 3164 Gold Camp Drive .( VJRO'i- di ri <br /> Rancho Cordova, CA 95670 <br /> Phone:(916)852-6690 December 17, 1992 <br /> Fax: (916)852-6688 <br /> Mr. Tony Refuerzo <br /> San Joaquin County, Department of Public Works <br /> Permitting Section <br /> 1801 East Hazelton, Stockton, California 95201 <br /> Subject: Change in Permit for a Subsurface Investigation at ARCO Service Station No. <br /> 6100, 25775 South Patterson Pass Road, Tracy, California. <br /> Mr. Refuerzo: <br /> As per our telephone conversation of December 15, 1992, we are submitting this letter to <br /> verify the change in Permit No. 92-464-SW for the subject site. The permit was originally <br /> issued for drilling a soil boring along the south side of Patterson Pass Road. Our change <br /> to the original permit will be the installation of a vapor-extraction well in the boring. As <br /> we indicated, after the soil has been remediated, the well will be drilled out and the boring <br /> backfilled with a cement and bentonite grout; the surface will be completed according to the <br /> surface material around the borehole. The location of the boring is shown on Plate 1. Plate <br /> 2 is the Schematic Well Design showing the general features of the vapor-extraction well. <br /> Your timely assistance in this matter is greatly appreciated. Please call if you have any <br /> questions about the work. <br /> Sincerely, <br /> RESNA Industries <br /> „a <br /> David F.'Stavarek <br /> Project*"Geologist <br /> c: <br /> Richard H. Walls, P.E. <br /> Sr. Project Engineer <br /> cc: Mr. Chuck Carmel, ARCO Products Company <br /> Ms. Margaret Lagorio, San Joaquin County Health District <br /> Attachments: Plate 1, Generalized Site Map <br /> Plate 2, Well Schematic Design <br /> 1215tref <br /> 30041-4 <br />