Update of Wastewater Treatment Capacity Alternatives Evaluation for the Yadkin Pee Dee Basin of Unio

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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

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Agenda

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

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(No Transcript)
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WWTF Alt. 3A
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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

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WWTF Alt. 3A
Alt. 3A Route
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Non-economic comparison
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Non-economic comparison (cont.)
Rank
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Cost Comparison First 8 Alternatives
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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)
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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