RFP Engineering - Combined Sewer Separation, Drainage Improvements and Storm Water Upgrades, Lead Water Service Replacement and Upgrades, and Wastewater Treatment Plant

The preliminary engineering study for the separation of combined sewers, wastewater treatment plant consolidation, and drainage improvements to the Cherokee Park area. This study will take place in the area between Lake St. to Fullerton Ave. and Addison Rd. to Villa Ave, excluding Normandy Dr. and Princeton St. The study shall provide storm sewer sizing to accommodate a 10-year storm using the most current data. The sewer separation study shall also address any upgrade required at the Diversey Ave. Pump Station. It is also required to provide an analysis for lead water service line replacement in the combined sewer area. The engineer shall be required to conduct an analysis on the wastewater treatment plants to determine the best method for treatment plant consolidation. The study shall include a plan to decommission the AJ LaRocca Facility and convey all flow to the North Waste Water Treatment Plant. It shall be required to determine the most efficient route to convey the wastewater to the North WWTP. It shall be required to develop a plan for plant expansion at the North WWTP as well as capacity and treatment for a combined sewer overflow (CSO). It shall be required to provide an overview on the entire treatment process for the North WWTP to take on the additional flow and comply with phosphorus removal regulations. The study shall state the method for phosphorus removal to comply with a 1.0 mg/L, 0.5 mg/L, and 0.1 mg/L limits. To reduce overland flooding it shall be required to develop a drainage plan for the area north of Cherokee Park. Cherokee Park is owned by the Village of Addison and Addison Park District. It shall be required to determine the amount of land required for retention, the method to hold and release storm water, and provide adequate calculations for retention. Technical questions concerning the RFP may be directed to: Ryan Hayden, Superintendent of Public Works: rhayden@addison-il.org Questions concerning the RFP documents and submittal may be directed to: Anna Hendrey, Purchasing Agent, ahendrey@addison-il.org The method of contractor selection has not been determined at this time.

Division 31 -	Earthwork.
Division 32 -	Exterior Improvements.
Division 33 -	Utilities.
Division 34 -	Transportation.
Division 35 -	Waterway and Marine Construction.