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• Environmental Management • P.O.Box 5095 <br /> l(\j_J/' San Ramon,CA 94583 <br /> November 10, 2004 <br /> Margaret Lagorio, IRE CEV E D <br /> Supervising REHS <br /> Environmental Health Department NOV 15 2004 <br /> San Joaquin County <br /> 304 East Webber Ave. ENVIRONMEi i i 11EALTH <br /> Stockton, CA 95202 PERMIT/SERVICES <br /> Subject: SBC Facility <br /> 7644 Ashley Lane <br /> Stockton, CA <br /> Dear Ms. Lagorio: <br /> This is a response to your letter of October 14,2004 requesting information on a"shallow <br /> injection well"noted during a facility inspection on September 16, 2004. The drywell <br /> consists of an 18-inch diameter concrete pipe installed to a depth of 3 feet and filled with <br /> course gravel. Drawings for the dry well installed with the facility in 1974 are attached. <br /> The dry well serves to drain the rain water from the asphalt area behind the building. As <br /> shown on the attached drawings there is a drain in the backup generator room that is <br /> attached to the dry well below grade. This floor drain has recently been sealed to prevent <br /> any fluids from the generator room from entering the dry well. <br /> According to the Property Manager for the site there are no permanent employees that <br /> work at the facility. Several technicians may occupy the facility intermittently when <br /> maintaining telecommunication switch gear. The average number of occupants the site <br /> septic system may serve is estimated to be equivalent of two full time persons per day. <br /> There are two bathrooms in the facility(men's and women's) and a lunchibreak room <br /> with a sink. As you have instructed,because the facility serves less than 20 people,we <br /> have not completed the "Inventory of Injection Wells" form. Attached are copies of <br /> drawings of the septic system. <br /> If you have any questions or need additional information,please call me at(925) 824- <br /> 5784. <br /> Thank you, <br /> /`4w, <br /> Matt Hopwood <br /> Environmental Manager <br /> Attachments <br />