Summary of Specifications:
The As-Needed Engineering Services solicited under this RFQ may involve a full range of technical Architect/Engineer services in support of the operation and maintenance of the Downriver Sewage Disposal System (DSDS), which provides wastewater transport and treatment services to 13 Wayne County communities as shown in Figure 1-1 and summarized as follows: City of Allen Park, City of Belleville, Brownstown Township (portion), City of Dearborn Heights (portion), City of Ecorse, City of Lincoln Park, City of River Rouge, City of Riverview, City of Romulus (portion), City of Southgate, City of Taylor, Van Buren Township (portion) and City of Wyandotte. The DSDS consists of the following facilities:
a) Wayne County Downriver Wastewater Treatment Facility (DWTF) which utilizes preliminary, primary, secondary, and disinfection treatment processes to treat sewage prior to discharging treated effluent to the Trenton Channel of the Detroit River. The permitted peak flow of the DWTF is 225 MGD. The DWTF was originally constructed in 1938 as a primary treatment plant with solids incineration. The facility has undergone expansions and upgrades in 1964, 1970, 1975, 1989, 1994, 1995, 1999, 2000, 2010, and 2011- Present.
b) 47 miles of sewer interceptor, as follows: i) Wyandotte Interceptor, also commonly referred to as the Riverdrive Interceptor, which transports wastewater from the communities of River Rouge, Ecorse, and Lincoln Park, and approximately 90 percent of the wastewater from Allen Park. This is the oldest constructed section of the collection system with construction drawings dated to 1938. ii) Riverview Interceptor, which transports wastewater from the City of Riverview. iii) Pennsylvania Interceptor, which transports wastewater to the DWTF from eight Downriver communities including Belleville, Van Buren Township, Romulus, Taylor, Dearborn Heights, Brownstown Township, Allen Park, and those portions of Southgate served by separated sewers. Construction drawings were issued in 1962 for this portion of the system.
c) 18.5 miles of tunnel storage known as the Downriver Tunnel Storage and Transport System constructed between 1999 and 2001 to divert excess wet weather flow from the interceptor system to the tunnel, when the capacity of the existing interceptor system was exceeded. The tunnel system components are: i) Lower Tunnel, which extends from the DWTF west along Pennsylvania Road to Allen Road, then north along Allen and Pelham Roads to Champaign Road. ii) Upper Tunnel, which extends along Pelham Road north from the lower tunnel at Champaign Road. iii) Allen Park Tunnel Spur, which extends to the east approximately 8,000 feet from the drop structure of the Upper Tunnel at Champaign Road. iv) Eureka Road Relief Sewer and Relief Sewer Extension, which extends west along Eureka Road from the connection to the lower tunnel at Allen Road to Wahrman Road. v) Taylor (Pelham) Basin to Jackson Street Pumping Station Connection, which extends north approximately 2,750 feet from the Taylor (Pelham) Basin under Highway I-94 and along Jackson Avenue and Weddel Avenue to Hanover Avenue.
d) Flow meters and rain gages as follows: i) Five ADS Environmental Services flow meters are in sanitary sewers ranging in size from 24 inches to 48 inches in diameter ii) Sixteen Accusonic Services Flow meters are in sanitary sewers ranging in size from 36 inches to 78 inches in diameter. iii) Eighteen Novalynx rain gauges in various locations in the DSDS service area
Engineering services for facilities and systems owned or operated by Drainage Districts (e.g., Southgate-Wyandotte Drainage District facilities) and by local communities and agencies tributary to the Downriver Sewage Disposal System are not included in this RFQ.
PLEASE REVIEW THE FORMAL SPECIFICATIONS FOR ADDITIONAL INFORMATION AND SUBMITTAL REQUIREMENTS. FAILURE TO ADHERE MAY RESULT IN YOUR BID BEING DEEMED NON-RESPONSIVE.
