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• shown on the drawing was determined based on the existing St. <br /> Anthony system configuration and providing a minimum static <br /> pressure of 40 psi to all customers . <br /> In order to determine which areas can effectively be served by <br /> the proposed connection, the potential service area was isolated <br /> by closing down surrounding valves on the system and performing <br /> hydrant flow tests . For the purposes of the tests , it was <br /> determined that the present St. Anthony system could supply the <br /> potential service area with hydraulic conditions which would <br /> accurately represent those of the proposed Roseville connection. <br /> Nine hydrant flow tests were taken in the potential service <br /> area. The locations of these tests are shown on the attached <br /> • drawing and the results are shown on the following table . <br /> TABLE 1 <br /> TEST STATIC RESIDUAL FIRE FLOW <br /> LOCATION PRESSURE FLOW PRESSURE @ 20 PSI <br /> 1 62 psi 995 gpm 48 psi 1800 gpm <br /> 2 47 psi 835 gpm 32 psi 1145 gpm <br /> 3 50 psi 790 gpm 30 psi 985 gpm <br /> 4 51 psi 890 gpm 35 psi 1270 gpm <br /> 5 60 psi 810 gpm 45 psi 1375 gpm <br /> 6 71 psi 555 gpm 28 psi 610 gpm <br /> 7 58 psi 630 gpm 18 psi 615 gpm <br /> 8 72 psi 710 gpm 28 psi 775 gpm <br /> 9 60 psi 580 gpm 22 psi 595 gpm <br /> The critical factor in determining the effective service area is <br /> I <br /> the ability of the system to provide an adequate :fire flow. The <br /> • generally accepted minimum fire flow for residential areas is <br /> 1 ,000 .gallons per minute (GPM) at. a ..residual pressure of 20 psi . <br /> i <br />