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Presented to Union County Board of Commissioners Presented by CH2M HILL Bob Forbes, PE

Update of Wastewater Treatment Capacity Alternatives Evaluation for the Yadkin - Pee Dee Basin of Union County, NC. Presented to Union County Board of Commissioners Presented by CH2M HILL Bob Forbes, PE March 1, 2007. Agenda. Project background Alternatives evaluation overview

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Presented to Union County Board of Commissioners Presented by CH2M HILL Bob Forbes, PE

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  1. Update ofWastewater Treatment Capacity Alternatives Evaluationfor the Yadkin - Pee Dee Basin of Union County, NC Presented to Union County Board of Commissioners Presented by CH2M HILL Bob Forbes, PE March 1, 2007

  2. Agenda • Project background • Alternatives evaluation overview • Non-economic parameters • Economic parameters • Summary • Questions

  3. WWTF Alt. 3A

  4. Basis for evaluation of alternatives • Non-economic factors • NPDES permit factors • Institutional issues • Long-term suitability of WRF site • Other environmental factors • Capital costs • Site issues

  5. WWTF Alt. 3A Alt. 3A Route

  6. Non-economic comparison

  7. Non-economic comparison (cont.) Rank

  8. Cost Comparison – First 8 Alternatives

  9. Cost Comparison – Other 4 Alternatives TABLE 3 Summary of Potential Costs in Million Dollars (last four alternatives evaluated, with capacity increased from 5 MGD to 6 MGD in initial phase, decreased from 10 MGD to 9 MGD in 2nd phase, and updated from March 2004 to November 2006 dollars)

  10. Evaluation Summary Non-economic rankings are from Table 1; cost rankings are in order of estimated costs (lowest to highest, from Tables 2 & 3), and the overall rankings of the 12 alternatives represent the sum of non-economic and cost rankings

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