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Item Information   Holdings       More by this author     Davenport, Josh D.     Subjects     Water Pollution     Stormwater infiltration.     Runoff -- Management     MSEV Project.     Browse Catalog     by author:      Davenport, Josh D.       by title:      The reduction of sed...         MARC Display

The reduction of sediment loading distributed to Okauchee Lake via stormwater runoff / Josh D. Davenport. by Davenport, Josh D. Subjects Water Pollution   Stormwater infiltration.   Runoff -- Management   MSEV Project. Description:  106 leaves : ill. ; 29 cm. Contents:  Sedimentation basins -- Filtration/sedimentation enhancements in open channels -- Mechanical systems -- No action -- Design standards and methods -- Analysis of effectiveness -- Effectiveness of alternatives -- Cost analyses -- Environmental impacts -- Conclusions and recommendations -- Appendix A) Alternative cost breakdown B) Design drawings C) Executive summary D) Mass balance diagrams. The area along the south shore of Okauchee Lake known as Ice House Bay has experienced storm water management problems, including localized street flooding, damage to private property due to flooding, and contributions of sediment and associated pollutants deposited on the bed of Ice House Bay. At the request of the Okauchee Lake Management District (OLMD), a study has been performed to analyze the problems and a series of alternative measures to remedy the situation. Three alternatives were analyzed: a sedimentation basin, a mechanical system, and a filtration enhancement in open channels. These options are for the reduction of non-point source pollution that Okauchee Lake Management District can implement locally with the help of the Towns of Summit and Oconomowoc. Each option seeks to remove or reduce the pounds of total suspended solids that are carried by stormwater discharging to Ice House Bay. A wet extended detention pond, bio-retention swale, a Downstream Defender, and no action were analyzed for their cost and effectiveness at removing total suspended solids from the stormwater runoff. Each stormwater management option was designed and analyzed for their ability to reduce the pounds of total suspended solids being discharged into Ice House Bay and the cost of the option. The cost of each design was determined using RS Means. The reduction of total suspended solids was determined using the Source Loading And Management Model (SLAMM). The bio-retention swale removed the most amount of TSS from the stormwater runoff (8,200 lbs); while the Downstream Defender removed the least (5,550 lbs). The no action alternative was the least expensive of the alternatives with a total cost of $49,000. The wet extended detention pond was the most expensive with a total cost of $160,000. TheWet extended detention pond costs $1.37 per pound of solids removed, the Downstream Defender costs $1.04 per pound of solids removed, the bio-retention swale costs $0.76 per pound of solids removed, while no action costs $0.07 per pound of solids removed. Based on the data presented, the alternative recommended to the Okauchee Lake Management District is to not install one of the stormwater management devices analyzed. The stormwater management devices do not justify their prices based on their removal abilities. At this time, MSOE recommends further analysis of the drainage area and analyzing the freeway runoff separate from the residential runoff. However, that analysis was not completed within this report.   Copy/Holding information Location Collection Call No. Status   Walter Schroeder Library Master's Theses AC805 .D37 2006 Available Add Copy to MyList Format: HTMLPlain textDelimited Subject:   Email to:

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