1 / 15

Agenda

Inflow & Infiltration Reduction NACWA – Facility and Collection Systems Committee February 13, 2012. Agenda. History System Wide Coordination Reporting Results. History. Special Purpose District est. in 1925 9 member Board appointed by Governor

tate-battle
Download Presentation

Agenda

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Inflow & Infiltration ReductionNACWA – Facility and Collection Systems CommitteeFebruary 13, 2012

  2. Agenda • History • System Wide Coordination • Reporting Results

  3. History • Special Purpose District est. in 1925 • 9 member Board appointed by Governor • 9 WWTF, 63 Pump Stations and 360 miles of line serving 121,000 customers • 17 local Subdistricts with 1,955 miles of collector lines

  4. History • SCDHEC Court Order in 1988 for Mauldin Road WWTF Basin • ReWa and 4 Subdistricts • Berea Public Service District • Gantt Fire, Sewer and Police District • Parker Sewer and Fire District • City of Greenville

  5. History • Agreements with the 4 Subdistricts • Flow monitoring • Peak flows measured • Babbitt Equation • 10 State Standard • Pump station run times • Manual flow measurement

  6. History • Sewer rehabilitation program • Pre-rehabilitation flow and rainfall monitoring • Sanitary sewer evaluation system • Sewer rehabilitation • Post-rehabilitation flow and rainfall monitoring • Annual progress reporting to SCDHEC

  7. System Wide Coordination • Agreements with other Subdistricts • Work plan for 15 years • Commitments • Milestones • Funding sources • Annual Report to ReWa

  8. System Wide Coordination • Slater • 100% replacement • Almost complete • Piedmont • 100% replacement • Construction began in January • Several years to complete

  9. Reporting Results • I&I volume reduction during a 1.5” rain event • 22.6 million gallons in 2007 • 10.4 million gallons in 2011 • 12.2 million gallons reduction

  10. Reporting Results • Unit Contributory Loading reduction • 2.4 million gallons (375 gpd) at Pelham • 2.0 million gallons (350 gpd) at Gilder Creek • 0.3 million gallons (350 gpd) at Durbin Creek • 4.0 million gallons (400 gpd) at Lower Reedy • 6.0 million gallons (300 gpd) at Mauldin Road • 14.7 million gallons recovered

  11. What does all this mean? • Rehabilitation provides increased capacity • Collection system lines for ReWa & Subdistricts • Trunk lines for ReWa • Wastewater treatment facilities for ReWa • UCL Reduction provides increased capacity • Wastewater treatment facilities for ReWa • Delays need for capacity related capital Reporting Results

  12. http://www.rewaonline.org/inflow-infiltration.php

  13. Questions

More Related