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t <br />7AT <br />TAIT &ASSOCIATES, INC. <br />CONSULTING ENGINEERS Civil • Planning • Surveying • Environmental <br />January 28, 1999 <br />Via: Fax <br />Letitia Briggs <br />Senior Registered Environmental Health Specialist <br />Public Health Services <br />304 East Weber, Third Floor <br />Stockton, CA 95202 <br />Phone (209) 468-3468 <br />RE: System Pressure Testing <br />San Joaquin County Corporation Yard <br />1810 East Hazelton, Stockton, CA <br />TAIT Job No. SP3952 <br />Dear Letitia: <br />The primary piping has been installed at the above referenced yard and was initially inspected <br />by your office on 1/19/99. At that time, the 1 -hour air pressure test on the primary piping per <br />the specifications in the project -approved plans was witnessed by your office. A soap test of <br />the joints was performed and no leaks were detected. Although the contractor performed the <br />test per the project -approved plans, the County Health Department has not issued its approval <br />of the test and allowed the contractor to continue the installation of the secondary containment <br />piping. <br />On 1/22/99, I visited the site at the request of Earl Gilford to view the primary piping <br />installation. At that time, the air pressure was increased in the individual piping systems to at <br />least 75 psi and a soap test of all joints and fittings was performed and witnessed by myself. <br />The air pressure was left on the system over the weekend and on the morning of 1/25/99 I <br />again viewed the pressure gauges, and all pipe systems passed the test per the approved plans. <br />After discussions with the Motor Pool Division that morning, you stated that the contractor <br />needed to perform the cyclic pressure test per A.O. Smith's installation recommendations to <br />obtain County Health approval. As this is not what was required at time of plan approval, and <br />is not the normal test procedure for this type of installation, the Public Works Department feels <br />this is extraordinary and unnecessary. As the piping system has passed the industry standard <br />test, the Department accepts the test results and requests your approval to continue the project <br />without performance of the cyclic pressure test. <br />2880 Sunrise Boulevard. • Suite 206 • Rancho Cordova, CA 95742 (916) 635-2444 • (916) 635-2606 FAX <br />Other Locations: Orange, CA • San Diego, CA • Concord, CA Phoenix, AZ • Tucson, AZ <br />Established 1964 <br />