Test Report.pdf

This document is a Backflow Assembly Test Report from San Mateo County Health Environmental Health Services for the Cross Connection Control Program. The report contains test results for two backflow prevention assemblies at USCG Air Station San Francisco (Facility ID: AL-7992), located at 1020 North Access Road, San Francisco, CA 94128.

The first assembly (Device ID: DEV-0000003097) is an 8-inch Watts Model 909 RPDA device serving as an existing commercial water meter for SF - San Francisco International. The initial test conducted on 06/15/2026 from 8:27 AM to 8:30 AM resulted in a failed assembly status. The test identified that the #1 and #2 rubber gaskets and the relief valve rubber goods required replacement. The test after repair was conducted from 11:46 AM to 11:49 AM on 06/15/2026, and the assembly status was marked as failed, with comments indicating the relief valve stem assembly continued to fail and requires complete replacement as it is damaged beyond repair.

The second assembly (Device ID: DEV-0000003098) is a 0.75-inch Watts Model 909 RP device serving as an existing commercial water meter for internal service at the same facility. The initial test on 06/15/2026 at 11:51 AM resulted in a passed status. Following repair work that included replacing the #1 and #2 rubber gaskets and relief valve rubber goods, the test after repair conducted from 12:05 PM to 12:07 PM on 06/15/2026 also resulted in a passed assembly status with Tag No. 26-05835. Both tests were conducted by County Tester Christian Gonzalez (Tester Number 1055).