Oakland-Macomb Interceptor (OMI) Rehabilitation

As part of the recent settlement of litigation between the Detroit Water & Sewerage Department (DWSD) and Oakland, Macomb and Wayne Counties, Oakland and Macomb Counties will be taking over jurisdiction of the Oakland Arm, Avon Arm and Edison Corridor Interceptors. The Edison Corridor Interceptor provides service to both Oakland and Macomb Counties and connects both the Romeo Arm Interceptor and the Oakland Arm Interceptor to the Northeast Waste Water Pumping Station, located near the intersection of Eight Mile Road and Hoover Road. The sewer system has been established as an Inter-County Drain, under the provisions of Chapter 21 of the Drain Code of 1956, as amended, for the rehabilitation, and continued operation and maintenance of this system.

In February 2007, the Detroit Water & Sewerage Department (DWSD) authorized NTH Consultants, LTD. to perform an inspection of the Oakland Arm, Avon Arm and Edison Corridor Interceptors. The inspection and evaluation involved the use of closed circuit television (CCTV) and sonar inspection of approximately 112,979 lineal feet of sewer ranging in size from 36 inches to 12.75 feet in diameter. The individual reaches of sewer were ranked in regards to their current condition and anticipated life expectancy using the Pipeline Assessment Certification Program (PACP) system. The inspection identified multiple areas indicating distress and made recommendations for appropriate repairs. Philip Sanzica, P.E., Chief Engineer and Michael McMahon, P.E., Assistant Chief Engineer, are the Water Resources Office engineers assigned to the project. The estimated project cost of the repairs is $200,000,000. The project will take approximately 5 years to construct with the first phase commencing construction in the spring of 2010. The project will be financed through the Michigan Water Pollution Control Revolving Fund

Project Updates

Contract #1 Construction Progress Update - February 2011 (file size 227k)

Contract #2 - Construction Progress Update -  February 2011 (file size 354k)

Project Plan

OMI Final Project Plan (file size 451k)

Appendices

Appendix A - Community Breakdown Analysis (file size 86k)

Appendix B - Interceptor Drain Segments (file size 26.4m)

Appendix C - Monetary Evaluation (file size 92k)

Appendix D - Agency Contracts (file size 2.5m)

Appendix E - Public Participation (file size 7.6m)

Figures

Figure 1 - Oakland-Macomb Interceptor Drainage District (file size 965K)

Figure 2 - Oakland-Macomb Interceptor Route (file size 344k)

Figure 3 - Oakland-Macomb Interceptor Drainage District Hydrology (file size 638K)

Figure 4 - Pollution Control Interceptor Segments (file size 347k)

Figure 5 - Wetlands & Floodplains (file size 465k)

Figure 6 - Recreational Areas (file size 447k)

Figure 7 - Conceptual Replacement Route (file size 349k)

Figure 8 - Major Rehabilitation Areas (file size 408k)

Figure 9 - Construction Staging Areas (file size 3.7m) 

Project Letters

OMI Project Letters (file size 233K)

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