cost/benefit study of the impacts of potential nutrient controls for ...

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Wastewater Costs - Overview Cost Area Capital Operation & Maintenance Key Cost Elements* • Categorize facilities by general treatment type (6 categories) and permitted capacity • Develop “typical” costs associated with meeting effluent quality tier and upgrading existing facility types • Incorporate allowances (percent of capital cost, varies by facility size and treatment tier) • Hydraulics (% of existing average daily flow) • Site Work (5-10%) • Yard Piping (5-10%) • Electrical (5-10%) • Contingency (30%) and Engineering (25%) • Instr. & Controls (5 – 15%) • Misc. Repair (1%) • Flow Maintenance (1 – 3%) • Land Acquisition (2%) • Labor (additional labor/tier at fully loaded rate and annual training costs) • Chemical (tier dependent) • Power costs/kwh * Sources: EPA, unit costs, literature, CDM’s bid database, POTWs Colorado Nutrient Cost/Benefit Study 26
Facility Categorization – St. Vrain MU Flow Bin (MGD) Existing Treatment Process Facility Category No. of Facilities Upgrade AS Full conversion to AS 0.5 to 1 Aerated Lagoon 4 1 X > 1 to 3 Activated Sludge 1 2 X • MBBR or IFAS with Filters • Activated Sludge with Nitrifying Trickling Filters 3 2 X > 3 to 5 Activated Sludge with Filters 1 1 X > 10 Activated Sludge 1 1 X Activated Sludge with Nitrifying Trickling Filters 1 1 X Colorado Nutrient Cost/Benefit Study 27
Page 1 and 2: COST/BENEFIT STUDY OF THE IMPACTS O
Page 3 and 4: Presentation Outline • Overview
Page 5 and 6: Cost-Benefit Study Objectives • D
Page 7 and 8: Regulatory Approach • CDPHE propo
Page 9 and 10: Proposed Regulation 31 - Total Nitr
Page 11 and 12: Proposed Regulation 85 - Overview
Page 13 and 14: COST-BENEFIT METHODOLOGY FRAMEWORK
Page 15 and 16: 27 Proposed Manageable Units Colora
Page 17 and 18: Platte Basin MUs - Close-up of Fron
Page 19 and 20: Pilot Test Methodology • Two Mana
Page 21 and 22: WASTEWATER COSTS 23
Page 23: Determine Improvements for Each Tie
Page 27 and 28: Develop O & M Costs by Flow Bin, Tr
Page 29 and 30: Water Supply Nitrate/Nitrite Benefi
Page 31 and 32: ENVIRONMENTAL BENEFITS 33
Page 33 and 34: Benefit Definitions • Active Bene
Page 35 and 36: Quantification of Passive Benefits
Page 37 and 38: Environmental Benefits • Not all
Page 39 and 40: Pilot Study Example - Preliminary E
Page 41 and 42: Pilot Study Example - Preliminary P
Page 43 and 44: NEXT STEPS
Page 45: QUESTIONS

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