Regional Infiltration and Inflow Control Program

Most Requested

Executive's Recommended Regional I/I Control Program

Resource Center and Document Library

Welcome to the resource center and document library. We will be continually adding new material to this page so keep checking back with us.

Public Notifications
Reports
Graphics
Standards and guidelines (separate Web page)
Program policies (separate Web page)
Archived news releases (separate Web page)

You can download and view documents (.PDF files) using a PDF Reader. For some documents, the file size (in KB or MB) is shown. CDs of some documents are available - please contact us.

Public Notifications back to top

Program Brochure, January 2008 (1.8MB).
Storm water & ground water in sewers is a regional problem

SSES Fact Sheet

SSES postcard mailer

48 Hour Notices

Reports back to top

Executive's Recommended Regional Infiltration and Inflow Control Program, December 2005

Benefit/Cost Analysis Report, November 2005

Regional Needs Assessment Report, March 2005

Alternatives/Options Report, March 2005

Pilot Project Report, October 2004

Warranty Inspection, August 2006 -- Supplement to the Pilot Project Report

2001/2002 Wet Weather Flow Monitoring Technical Memorandum, June 2002
(8.9 MB). Report with appendices is available on CD.

2000/2001 Wet Weather Flow Monitoring Technical Memorandum, May 2001
(9.1 MB). Report with appendices is available on CD.

RWSP Operational Master Plan and Ordinance 13680, December 1999
(Located on the Regional Wastewater Services Plan Web site)

Graphics back to top

	Graphic depicting how infiltration and inflow get into the sewer system. click image for larger view.

	Maximum calculated 20-year peak infiltration and inflow hourly flow rates in the King County system. The data for the following three maps is based on flow monitoring conducted in 2000/2001 and 2001/2002, documented in the Wet Weather Flow Monitoring reports. Local agency boundary-- click image for larger view. Also available as Acrobat PDF (590KB)
	Model basins-- click image for larger view. Also available as Acrobat PDF (634KB)
	Mini basins-- click image for larger view. Also available as Acrobat PDF (674KB)

Requesting copies of reports

To request copies of reports on CD, please contact Valerie Garza at valerie.garza.metrokc.gov or 206-263-6070.

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For questions about the I/I Control Program Web site, please contact Maryann Petrocelli at 206-263-7321 or maryann.petrocelli@kingcounty.gov.

Department of Natural Resources and Parks
Wastewater Treatment Division

Updated: July 3, 2008

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