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Treatment Costs and Level of Treatment

Treatment Costs and Level of Treatment. February 2006. Total Suspended Solids (TSS). Permit Limit. 60. 55. 16.7% below. mg/L. 45. Actual. 43.6% below. 30. Fiscal Year. Biochemical Oxygen Demand (BOD). Permit Limit. 100. 28% below. 70. mg/L. 57% below. Actual. 30.

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Treatment Costs and Level of Treatment

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  1. Treatment Costs and Level of Treatment February 2006

  2. Total Suspended Solids(TSS) Permit Limit 60 55 16.7% below mg/L 45 Actual 43.6% below 30 Fiscal Year

  3. Biochemical Oxygen Demand (BOD) Permit Limit 100 28% below 70 mg/L 57% below Actual 30 Fiscal Year

  4. Percent SecondaryTreatment Percent Treated 01-02 02-03 03-04 04-05 05-06 Fiscal Year

  5. O&M Joint Operating Costs Millions Fiscal Year

  6. FY 05-06 O&M BudgetTotal: $57,285,600 Biosolids Removal$10M, 17% Chemicals$14.3M, 25% Other$4.4M, 8% Natural Gas $2.4M, 4% Power $1.3M, 2% Personnel$23.7M, 41% Water $1.3M, 2%

  7. Unit Cost Increases in FY 05-06 Chemical / Utility FY 04-05 FY 05-06 Increase Sodium Hypochlorite $0.50 / gal $0.67 / gal 34.6% Sodium Bisulfite $0.45 / gal $0.52 / gal 17.2% Ferric Chloride $0.86 / gal $0.96 / gal 11.6% Electricity $0.11 / kWh $0.17 / kWh 61.9% Natural Gas $0.66 / therm $1.10 / therm 66.7%

  8. O&M Staffing FTEs Fiscal Year

  9. O&M Variable Costs Millions (projection) Fiscal Year

  10. ComparativeTreatment Costs Per MG San Diego…………….… $ 1,621 City of Los Angeles……. $ 1,261 Modesto………………… $ 1,252 OCSD…………………… $ 1,246……. $ 731 LA County San District……………….. $ 767 Partial(O&M, Compliance, Lab Total rev 2/02/06

  11. Questions? Visit our website: www.OCSD.com

  12. Secondary Treatment - MGD

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