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W�C(11RNIA-HEALTH AND WELFA RE AGE NCY PETE WILSON Governor <br /> DEPARTMENT OF HEALTH SERVICES <br /> OFFICE OF DRINKING WATER <br /> 6455 JACKSON ROAD,SUITE 120 <br /> SACRAMENTO,CA 95826 <br /> (916)739-4034 <br /> April 9, 1991 <br /> Thomas A Hickey, Project Engineer <br /> Black & Veatch, Consulting Engineers <br /> Post Office Box 8405 <br /> Kansas City, Missouri 64114 <br /> Subject: Marley Cooling Tower - <br /> Remedial Ground Water Treatment <br /> The plans and specifications, for the Marley Cooling Tower <br /> Company, to pipe contaminated ground water to a treatment <br /> system for removal of the contaminants, have arrived and <br /> have been thoroughly reviewed. <br /> It was difficult to determine from the plans if adequate <br /> separation is being provided. Parallel separation from the <br /> existing water mains needs to be at least 4 feet edge to <br /> edge. Vertical separation at perpendicular crossings needs <br /> to have 1 foot vertical separation edge to edge with the <br /> water main being above the industrial main. <br /> When the water main crosses beneath the industrial main <br /> mitigating measures must be taken. The use of schedule 80 <br /> plastic pipe is acceptable as one of those measures. <br /> Please include the required separations on the plans as well <br /> as in the specifications. <br /> i <br /> Homer R Vaughn, P. . <br /> Lead Engineer <br /> Stockton District <br /> Office of Drinking Water <br /> cc: Environmental Health Division, San Joaquin Public Health <br /> Services <br /> Mike Camy, California Water Service <br /> HRV/hv <br /> ['.159\S US N..I ev9l l lP <br /> P <br />