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r <br /> STATE OF CALIFORNIA—HEALTH AND WELFARE AGENCY GEORGE DEUKMEJIAN, Governor <br /> DEPARTMENT OF HEALTH SERVICES <br /> 31 E. CHANNEL STREET, ROOM 270 <br /> STOCKTON, CA 93202 <br /> (209) 948-7697 <br /> April 19, 1988 <br /> Mr. Alec Cheney <br /> Associate Civil Engineer <br /> City of Tracy <br /> 520 Tracy Blvd. <br /> Tracy, California 95376 <br /> SOUTHERN PACIFIC CROSSING, TRACY PIPELINE / <br /> This letter responds to your proposed procedure for protecting <br /> the City of Tracy' s drinking water from contamination where your <br /> water distribution pipeline crosses the Southern Pacific pipeline <br /> at Byron Road and the Southern Pacific tracks. <br /> The procedures proposed in your letters of April 7, 1988, and <br /> April 14, 1988, are satisfactory. The enclosed sketch represents <br /> the way that I envision the installation of the monitoring well. <br /> The material used for the well must be equivalent to the material <br /> used for the steel casing. <br /> Monitoring schedules and procedures will be worked out separately <br /> with the City' s water operations personnel . <br /> W. GRIMSHAW <br /> Robert W. Grimshaw, P.E. <br /> District Engineer <br /> Public Water Supply Branch <br /> RWG:hmg <br /> Enclosure <br /> cc: San Joaquin Local Health Districts <br /> Laurie Cotulla <br /> 39011sp. 488 <br />