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<br />BERLOGAR STEVENS & ASSOCIATES <br /> <br />Berlogar Stevens & Associates (BSA) have performed three Double-Ring Infiltration Tests at the <br />drainage basin on July 22 and 25, 2022. Additional Double Ring Infiltrometer Test was performed <br />at the Park Site on July 26, 2022. Before starting the test, the ground was cleared and cleaned <br />from vegetation, and excavated 5 feet below ground surface. The infiltrometer rings were <br />penetrated 6 inched into the ground. The water level was maintained constant at 12 inches higher <br />than the ground surface adjacent to it. Attached Site Plan shows the location of these three Double- <br />Ring Infiltration Tests. The results of the infiltration testing are shown in Tables below: <br /> <br />Test No. 1 <br />Condition: Pre-soaked a day before starting the test <br />Inner diameter=1 ft <br />Outer diameter=2 ft <br />Trial <br />No. <br />Start <br />Time <br />End <br />Time <br />Intervals <br />(min) <br />Inner Ring flow <br />Cumulative <br />(gal) <br />Outer Ring <br />flow <br />Cumulative <br />(gal) <br />Incremental <br />rate <br />Inner (in/hr) <br />Incremental <br />rate <br />Outer (in/hr) <br />1 7:15 7:30 15 0 0 0 0 <br />2 7:30 7:45 15 0 0.234 0 0.6376 <br />3 7:45 8:00 15 0 0.395 0 0.4387 <br />4 8:00 8:15 15 0 0.458 0 0.1717 <br />5 8:15 8:45 30 0 0.657 0 0.2711 <br />6 8:45 9:15 30 0.072 0.778 0.2943 0.1648 <br />7 9:15 10:15 60 0.072 1.161 0.0000 0.2609 <br />8 10:15 11:15 60 0.072 1.69 0.0000 0.3603 <br />9 11:15 12:15 60 0.173 2.049 0.2064 0.2445 <br />10 12:15 1:15 60 0.173 2.166 0.0000 0.0797 <br /> <br /> <br /> <br />