In a comment to another question, Frank Burdick asked: 

A. Here are descriptions of the projects along with project related reports. 

Auburn Hill, Michigan – Population 21,400.  The City removed 532 FDDs from the Bloomfield-Orchards subdivision between 2001 and 2005, comprising 99% of the homes in the district. Flow removals were evaluated using pre- and post-FDD flow data.  The program significantly reduced inflow, infiltration, and base flow volumes.  Based on the unit rainfall and 25-year recurrence interval rainfall events used in the pre-rehab vs. post-rehab analysis, total flow volumes and peaks flows were reduced by 50%-60%. Design peak flow removal rate was 2.4 gpm per FDD. Oakland County’s technical memorandum on the flow evaluation was previously distributed to the Best Practices sub group at the October 29, 2013 Citizens Advisory Committee meeting.

Westland, Michigan – Population 84,094. In 2006, the City performed a pilot footing drain disconnection program funded by a grant from the Rouge Program Office (RPO.) Footing drains in sixteen homes were disconnected from the sanitary sewer system and sump pumps were installed. Post-FDD measurements suggest that the disconnections remove an average of 430 gallons of storm water from the sanitary sewer per home, during a 1.8-inch rain event. Following the results of the pilot program, the City secured State Revolving Fund (SRF) loan to disconnect 200 homes, and in 2010, solicited applicants. Applicants were selected from the pool of volunteers and FDDs were performed. The City did not measure flows post-FDD due to funding limitations.  In 2010, while the FDD program was underway and again in 2011, the City of Westland was hit with two severe rainstorms, which caused widespread flooding across the city. Some homes with FDDs were flooded, as were some homes without. The storms are believed to have been on the order of 100-year storms.

Attachments: Examples of Other Communities (a compendium of various methods communities have used to deal with wet weather issues and the results known.) Robert Czachorski distributed this to the CAC at the October meeting. 

Westland_RPO_VIA_Closeout_Report.pdf - a report of the FDD pilot program in Westland, which was funded by an RPO grant. 

Auburn Hills 2012-0213 Tech Memo BOS.doc - the engineering data and analysis, post FDD, for Auburn Hills' footing drain disconnection project in the Bloomfield Orchards subdivision. 

Auburn Hills FDD program.pdf - an extensive description of the footing drain disconnection project in Auburn Hills' Bloomfield Orchards subdivision.

A