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Effectiveness of Wastewater Collection System Rehabilitation to Reduce Infilration and Inflow Feb 2004
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Effectiveness of Wastewater Collection System Rehabilitation to Reduce Infilration and Inflow Feb 2004
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Last modified
6/5/2009 11:15:22 AM
Creation date
6/1/2009 12:27:28 PM
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PW_Exec
PW_Division_Exec
Engineering
PWA_Project_Area
Wastewater
PW_Subject
Wastewater
Document_Date
2/29/2004
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140 <br />120 <br />>~ <br />E 100 <br />~ 80 <br />60 <br />40 <br />20 <br />0 <br />DA Basin <br />Pre- vs. Post-Rehabilitation Monitoring Results <br />Reduction = 40% <br />y = 14.72x <br />0 <br />~® y=8.90x <br />a o~ <br />~ o Pre-Rehabilitation <br />® Post-Rehabilitation <br />0.0 2.0 4.0 6.0 8.0 10.0 <br />Event Rainfall Volume (in) <br />Figure 8 - DA Basin pre- vs. post-rehabilitation event comparison (measured flow vs. event <br />rainfall) <br />120 <br />., 100 <br />~ 80 <br />m <br />~ 60 <br />0 <br />~ 40 <br />D <br />~ 20 <br />DA Basin <br />Pre- vs. Post-Rehabilitation Monitoring Results <br />0 <br />0.0 <br />Reduction = 39% <br />y = 9.83x <br />0 <br />o y = 5.98x <br />® o Pre-Rehabilitation <br />~ Post-Rehabilitation <br />2.0 4.0 6.0 8.0 10.0 12.0 <br />Event + 7-Day Preceding Rainfall Volume (in) <br />Figure 9 - DA Basin pre- vs. post-rehabilitation event comparison (measured flow vs. event + <br />7-day rainfall) <br />22 <br />
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