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Mr. Kenneth Earnest <br /> Ultramar Inc. <br /> August 17, 1993 <br /> Page 2 <br /> The monitoring wells will be constructed of 4-inch diameter, flush-threaded, Schedule 40 PVC, with <br /> a screened interval extending from approximately 5 feet above the ground water table to 10 feet <br /> below the ground water table. Proposed construction details for the monitoring wells are illustrated <br /> in Enclosure B. <br /> Soil samples will be collected from each soil boring at 5-foot vertical intervals and will be <br /> field-analyzed for the presence of petroleum hydrocarbon vapors with a photoionization device(PID). <br /> At least four soil samples from each boring will be submitted for laboratory analysis of benzene, <br /> toluene, ethylbenzene, and xylenes, and total petroleum hydrocarbons as gasoline, using methods <br /> approved by the U.S. Environmental Protection Agency and the California Department of Health <br /> Services. Selection of soil samples for laboratory analysis will be based on PID readings and the <br /> depth to ground water. <br /> Enclosed are well permit applications and a check in the amount of$89 which should be submitted <br /> to the San Joaquin County Environmental Health Division. We anticipate that the field work will <br /> commence within two weeks of approval of this work plan. <br /> We recommend that copies of this work plan be forwarded to: <br /> Mr. Harlon Knoll Mr. Gordon L. Boggs <br /> Environmental Health Division California Water Quality Control Board, <br /> Public Health Services Central Valley Region <br /> San Joaquin County 3443 Routier Road <br /> Post Office Box 2009 Sacramento California 95827-3098 <br /> Stockton, California 95201 <br /> If you have any questions regarding this project, please call Rich Chandler at (916) 638-2085. <br /> Sincerely, <br /> DELTA ENVIRONMENTAL CONSULTANTS, INC. <br /> .v CRED GAO <br /> hard E. Chandler ��5 S Ft. 8RO �O <br /> jaimes <br /> drogeologist <br /> No.5078 r <br /> � Ekp�(30�y- � <br /> R. Brownell, R.G.ifornia Registered Geologist No. 5078 ATF4�� <br /> CAt1F0 <br /> REC (LRP129.&TM <br />