Solutions for Odor and Corrosion Control.

1. FORCE MAIN ODOR CONTROL LAGUNA BEACH, CA WEF Odors and Air Emissions 2008

3. CORROSION CONCERN

5. TECHNOLOGY OVERVIEW Oxygen Gas Unscreened Raw Wastewater Force Main Oxygenated Raw Water Sidestream Pump

6. ECO 2 ® Oxygenation Cone System Intake System Discharge Oxygen Supply Booster Pump Influent 18” Force main 3 miles long Lift Station Wet Well TYPICAL FORCE MAIN INSTALLATION

7. SYSTEM COMPONENTS

8. Liquid Oxygen SOURCES OF OXYGEN O 2 Generator

9. ONSITE OXYGEN GENERATION

10. COST – LOX vs. GENERATION 5 Year N/A Payback $14,000 $24,500 Annual Operating Cost Electrical Cost $11,000 O&M Cost $3,000 Product Cost $18,500 Annual Lease $6,000 Operating Cost $53,000 $5,000 Capital Cost 1,000 1,000 Oxygen (lbs / day) GENERATION LOX

13. BLUEBIRD PUMP STATION

14. FORCE MAIN DISCHARGE

15. MONTAGE RESORT

16. UNTREATED H2S LEVELS Peak: 800 ppm Average: 145 ppm

19. DESIGN RULES OF THUMB 1. Oxygen Demand: 1 Hour HRT = 10 mg/L D.O. Uptake 2. Pressure Check: 1 ft Head Pressure = 1 mg/L D.O.

20. DESIGN DATA CHECKLIST

22. PERFORMANCE STANDARD Measurement Point at Force Main Discharge Manhole Gas Phase H 2 S Average < 5 ppm H 2 S

23. INSTALLATION INSIDE STATION

24. INSTALLATION LAYOUT Oxygen Generator Force Main Pump Force Main ECO2 Cone Main Level Basement Sidestream Pump

25. SYSTEM COMPONENTS

26. LAGUNA BEACH - H 2 S RESULTS

27. Average: 0.4 ppm LAGUNA BEACH - H 2 S RESULTS

28. BEFORE Average: 145 ppm

29. AFTER Average: 0.4 ppm

30. ECONOMICS - $40,700 Electrical Cost (Oxygen Generator) (15 hp Side stream Pump) - 3.6 Years Payback - $397,000 Capital Cost (Equipment + Installation) - $109,300 Annual Savings $150,000 - Chemical Cost CHEMICAL ECO2

32. TRA - Dallas, TX 150 MGD . 14,000 lb O 2 / day Anticipated Results: 0.0 mg/L DS into Primary Clarifier

33. Cheeney Creek WWTP - Fishers, IN 5.0 MGD . 5 hrs HRT Results: 5 - 10 mg/L D.O. at Plant Headworks Allisonville Road Smock Creek Hague Road

34. KSD - Kennebunk, ME 5.0 MGD . 210 lb O 2 / day Results: WWTP Plant D.O. Discharge 8 mg/L

35. GPA - Savannah Harbor, GA 22 MGD . 30,000 lb O2 / day Results: Cone D.O. Discharge 150 mg/L

40. FORCE MAIN ODOR CONTROL