City of Janesville Wastewater Facility Plan Amendment Public Hearing December 18, 2008

Agenda Janesville wastewater treatment needs Alternative evaluations Recommended improvements Financial impacts

Wastewater Treatment Needs Regulatory issues Beneficial use of biosolids Phosphorus Ammonia Growth / Capacity Aged facilities Some existing facilities 40 years old Implement new technologies Operational cost savings / energy efficiency Security and safety

Biosolids Management Current program → Landfill biosolids Using valuable landfill space 6,000 tons per year (Current) Approximately 3% of annual landfill disposal Potential $120,000 per year new revenue if biosolids are replaced with outside revenue Landfill hours restrict dewatering operations Valuable resource enters waste stream Biosolids management is the program for safe disposal or end use of solids produced during wastewater treatment.

Biosolids Management Proposed program → Beneficial use Biosolids have value when recycled Fertilizer (N-P-K) Organic Matter (humus) Proven to increase corn yield Recycling nutrients is environmentally friendly “Carbon neutral”: Fertilizer production requires fossil fuel Nutrients recycled to food chain, not the waste stream

Growth of Janesville Service Area

CPE Design Pop. 78,935

Current and Future Wastewater Flows and Pollutant Loadings 15 to 26 % Increase Over 20 years

Utilization of Treatment Processes

Alternatives Evaluation Formal method of selecting and evaluating alternatives A total of 50 alternatives evaluated for 12 separate treatment processes and 6 support facilities Identify and Evaluate Alternatives for Each Process Assess Treatment Process Needs Select Recommended Project

Recommended Improvements Item Project Cost (MM$) Septage Receiving $0.2 Upgrade Preliminary and Primary Treatment $2.4 Biological Phosphorus Removal $1.1 Activated Sludge $10.4 Capacity Aeration Blowers Final Clarification $1.4 Return Activated Sludge Pumping $0.8 Cap./ Upgrade Disinfection Administration and Laboratory Facilities $2.1 Site Facilities $1.2 Electrical Distribution Upgrades Electrical Equipment Upgrades Standby Diesel Generator $1.5 Digester Gas Generators Anaerobic Digestion $2.5 Centrifuge Dewatering $1.3 Class B Biosolids $0.6 Biosolids Cake Storage Total Estimated Project Cost $32.4

Historical WWTP Project Costs

Recommended Plan

Financial Impacts Typical residential rate increase of $ 18.35 from $ 62 to $ 80 per quarter in 2010 Based on Financing $ 27 Million at 2.4% Over 20 Years

RESIDENTIAL RATE COMPARISON (PEER CITY COMPARISON - 8/4/2008) Financial Impacts RESIDENTIAL RATE COMPARISON (PEER CITY COMPARISON - 8/4/2008)   CITY DATE OF LAST WW EXPANSION TOTAL WATER /QTR PUBLIC FIRE PROTECTION WASTEWATER GRAND TOTAL Water + PFP + WW Fond du Lac 2008 $73.75 $9.50 $96.50 $179.75 Oshkosh 1992 $86.83 $3.82 $70.14 $160.79 Appleton 1990 $90.25 $11.25 $61.35 $162.85 Beloit $47.82 $11.94 $92.65 $152.41 Waukesha 1993 $59.05 $11.79 $71.09 $141.93 Wausau 1995 $56.00 $8.70 $60.90 $125.60 Manitowoc 1998 $41.11 $8.40 $71.07 $120.58 Green Bay 1991 $58.25 $7.20 $54.30 $119.75 Racine 2000 $50.00 NC $67.25 $117.25 Janesville - Future $29.70 $4.90 $79.95* Kenosha 1974 $50.75 $7.35 $49.15 $107.25 Eau Claire 1980 $44.62 $9.46 $51.00 $105.08 Janesville - 2009 1985 $35.10 $5.39 $61.60 $105.60 Sheboygan 1984 $26.10 $4.64 $53.56 $84.30 La Crosse 1979 $35.25 $38.00 $73.25 AVERAGE PEER CITY $63.78 $11.19 $68.65 $141.90 Average residential customer with a 5/8" meter and 25 CCF quarterly usage. Excludes other operating cost adjustments

Potential Future Wastewater Treatment Needs New phosphorus standard Current work identifying total maximum daily load (TMDL) for phosphorus and suspended solids to Rock River New nitrogen standard Current work in Mississippi River watershed to identify acceptable nitrogen levels Others Mercury Chlorides

City of Janesville Wastewater Facility Plan Amendment Public Hearing December 18, 2008

QUESTIONS

Rate Analysis of Staging Options