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0 � 0 <br />JOHNS -MANVI LLE <br />PRODUCTS CORPORATION <br />OF CALIFORNIA <br />STOCKTON, CALIFORNIA TELEPHONE: HOWARD 4-7341L <br />Stockton Plant <br />P. O. Box 1587 <br />San Joaquin Local Health District <br />Division of Environmental Sanitation <br />• South American Street <br />• 2, California <br />Attention: J. D. Layson, Director <br />With regard to our several telephone conversations on state accepted <br />back flow preventers, would,you kindly send the • information • <br />this subject. In contacting the water company in connection with a <br />possible tie between city water and our plant water for fire protection,, <br />it will be important to know just what is required. Presently, there is <br />a double check system on the city water line by our meter. <br />Thanking you for this information, I remain <br />L. W. Stilwell <br />Assistant Plant Engineer <br />IWS/pld <br />4 <br />