BAPTIST VALLEY WEST SEWER EXTENSION TAZEWELL COUNTY PUBLIC SERVICE AUTHORITY Cumberland Plateau Planning District

Transcription

1 Cumberland Plateau Planning District Project Background The Baptist Valley West project area includes the areas of tate Route 631 from Dailey Chapel to Cedar Bluff, Mouth of Laurel, Busthead, and tate Route 627 to Bandy. Approximately 1100 residential and 8 commercial connections are located within the Baptist Valley West project area.. Currently, the area is not served by a public sewage system. Residences and businesses in the area primarily utilize privately owned and maintained on-site septic systems. It is suspected that some of the septic systems in the area are failing and that straight piping does occur. The majority of the project area lies in the watershed of the Upper Clinch River which has been identified by the Virginia Department of Environmental Quality (DEQ) as an impaired stream. It is anticipated that, with the provision of public sewage service, moderate and low potential exists for residential and commercial growth, respectively. Proposed Facilities The proposed facilities associated with the Baptist Valley West ewer Extension include approximately 19,800 linear feet of 12-inch gravity sewer, 6,600 linear feet of 10-inch gravity sewer, 127,270 linear feet of 8-inch gravity sewer, 13,200 linear feet of 4-inch force main, 330 linear feet of 2-inch force main, and four sewage pumping stations. The extension will connect to the existing Town of Richlands sewage collection system and all wastewater generated in the project area will ultimately be conveyed to and treated at the existing Richlands Wastewater Treatment Plant (WWTP). The Richlands WWTP has a permitted capacity of 4.00 million gallons per day (MGD) and currently treats an average of 2.25 MGD. Treated effluent from the Richlands WWTP discharges into the Clinch River which has been identified by DEQ as an impaired stream. Based on a 50-year design period, a potential future customer base of 1219 connections (anticipated 50-year growth of 10%) and a flow of 300 gallons per day (GPD) per connection, future average daily flow for the project area will be approximately 365,700 GPD or 0.37 MGD. Therefore, adequate capacity is available at the Richlands WWTP to treat the anticipated wastewater generated in the Baptist Valley West project area. Project Costs The preliminary probable project cost and annual operation and maintenance costs associated with the Baptist Valley West ewer Extension are $14,408,849 and $36,720, respectively. These costs result in an approximate present worth of $13,377 per existing connection.

2 Cumberland Plateau Planning District PRELIMIARY PROBABLE PROJECT COT Construction Cost 19,800 L.F. 12-inch Gravity $71 /L.F. $1,405,800 6,600 L.F. 10-inch Gravity $64 /L.F. $422, ,270 L.F. 8-inch Gravity $54 /L.F. $6,872,580 13,200 L.F. 4-inch Force $18 /L.F. $237, L.F. 2-inch Force $15 /L.F. $4,950 4 EA. ewage Pump $175,000 /EA. $700,000 1,108 EA. Gravity ewer $1,300 /EA. $1,440,400 Total Construction Cost $11,083,730 Related Cost 30 % Total Construction Cost Total Related Cost $3,325,119 TOTAL PROJECT COT $14,408,849 AUAL OPERATIO AD MAITEACE (O&M) COT Operation and Maintenance Cost 19,800 L.F. 12-inch Gravity $0.10 /L.F. $1,980 6,600 L.F. 10-inch Gravity $0.10 /L.F. $ ,270 L.F. 8-inch Gravity $0.10 /L.F. $12,727 13,200 L.F. 4-inch Force $0.10 /L.F. $1, L.F. 2-inch Force $0.10 /L.F. $33 4 EA. ewage Pump $5,000 /EA. $20,000 TOTAL AUAL O&M COT $36,720 PREET WORTH OF AUAL O&M COT (30 YEAR, 8%) $413,386 TOTAL PROJECT PREET WORTH $14,822,235 PREET WORTH PER COECTIO (1108 COECTIO) $13,377

3 8" ubstations BM OF 3 MATCH LIE HEET " 8" BM " W E OURCE: TAZEWELL ORTH, VA. TAZEWELL OUTH, VA. AMAOTE, VA, & POUDIG MILL, VA U..G.. QUADRAGLE

4 8" 8" 4" 2 OF 3 8" MATCH LIE HEET 1 8" W E MATCH LIE HEET 3 OURCE: POUDIG MILL, VA & AMAOTE, VA. U..G.. QUADRAGLE

5 8" MATCH LIE HEET 2 8" 3 OF W E OURCE: POUDIG MILL, VA. & RICHLAD, VA. U..G.. QUADRAGLE