1. Building A Better Biosolids Future

2. A Brief History Sewage Treatment in Detroit  “ The Grand Sewer” 1836  The Fairview Sewer 1913  The Detroit WWTP 1940

3. A Brief History The Detroit Waste Water Treatment Plant  Primary Treatment Incineration of solids Disinfection of effluent  Secondary Treatment added in 1972 Aeration tanks Final clarifiers Cryogenic oxygen plants Additional sludge handling facilities

4. DWSD WWTP Today Serves more than 3 million people in 78 communities. The largest single-site wastewater treatment plant in the U.S. Budget over $100 million/year, 800 employees. Design Flow: 930 MGD, Peak Flow: 1720 MGD Effluent discharged to Rouge and Detroit Rivers Produces over 500 dry tons of solids per day

5. A System Showing its Age  Multi-Hearth Furnaces  Landfilling Ash and some solids  Million $$ upgrades necessary

6. Working to Upgrade Solids Management 2003 Synagro bought out Minergy. Synagro proposes conversion to a 25-year contract. 2001 Detroit signed a 15-year, $25 million/yr, contract with Minergy Detroit LLC Nov 2007 Detroit city council approves contract awarding Synagro the management of a minimum of 73,000 dry tons of material per year.

7. Experience = Peace of Mind Pinellas, FL Sacramento, CA Hagerstown, MD Honolulu, HI Bronx, NY Baltimore, MD Back River WWTP Patapsco WWTP Current Synagro Projects DWSD WWTP

8. Interim Management Options 80% managed by Synagro

9. Incineration & Landfill INCINERATION  Fluidized bed technology  Lower operating temperatures and more complete combustion  More energy efficient  Lower air emissions LANDFILL  Back-up for land application  Ash dewatering and disposal

10. Land Application  Use and recycling – NOT disposal  Protection of Public Health  Protection of Surface and Groundwater  Aesthetic Concerns  Application in compliance with MDEQ Regulations

11. Where Land Application will occur Lenawee St. Clair Livingston Monroe Jackson Ingham Shiawassee Genesee Sanilac Lapeer Macomb Hillsdale Oakland Washtenaw Farmer interest high Spreading season ~ May-Dec., Landfilling in winter

12. Quality Equals Value Metals below EPA Part 503 Table 3 pollutant limits  Meet EPA Part 503 Class B Pathogen and Vector Attraction Reduction requirements  Used for agriculture & reclamation  Economic value $ 250/acre That’s over $1,300,000 annually!! MetalDWSD Result (mg/kg) EPA Table 3 (mg/kg) Arsenic2.8041 Cadmium2.5439 Chromium27.31200 Copper99.31500 Lead21.1300 Mercury0.4217 Molybdenum2.1975 Nickel20.1420 Selenium0.78100 Zinc7042800 MetalDWSD Result (mg/kg) EPA Table 3 (mg/kg) Arsenic2.8041 Cadmium2.5439 Chromium27.31200 Copper99.31500 Lead21.1300 Mercury0.4217 Molybdenum2.1975 Nickel20.1420 Selenium0.78100 Zinc7042800 Nutrient Value Per Acre* Nitrogen (N) $99.43 Phosphorous (P)$60.05 Potassium (K)$9.22 Magnesium (Mg)$17.36 Copper (Cu)$1.23 Zinc (Zn)$5.05 Lime$54.00 Spreading/Tillage$7.50 $253.84/ Acre * Prices as of 1/3/08, Auburn Fertilizer

13. Hauling and Spreading Cake Biosolids  Delivery in sealed dump trailers via approved haul routes  Unloading in designated staging areas  Loading to standard cake spreader

14. Cost savings for YOU! FY08 Biosolids Fund (2.4% CPI)$829,708.99 Less: FY07 Carry Forward-$109,789.34 FY08 Biosolids Funds Needed$719,919.65 2008 Per Ton rate without DWSD$8.29 2008 Per Ton rate with DWSD$6.20 COST SAVINGS PER DRY TON25.16%

15. Public Education  Increase biosolids awareness statewide  Proactive approach  Increased involvement with local groups  Farm Bureau  NRCS