Appendix-C_Alternatives_Cost_Information

Appendix C
Alternatives Cost Information
CLT/2006UPDATE_C&KWSOPTIONSTM.DOC 1 168626
TECHNICAL MEMORANDUM(DRAFT)
Long Term Water Supply Options (40 MGD)
PREPARED FOR:Cities of Concord and Kannapolis
PREPARED BY:CH2M HILL
DATE:July 30, 2002; Updated February 2006
GENERAL REQUIREMENTS/EVALUATION CRITERIA ON EACH ALTERNATIVE
1. Develop preliminary pipeline route to provide 40 MGD of additional supply for future
demand (as detailed in the B&V Master Plan, 2002).
2. Potential routes located on USGS quad maps.
3. Proposed system hydraulics/pipe sizing based on single pipeline with booster stations
as needed for 10, 20, 30, and 40 MGD increments.
4. Evaluate each alternative in terms of supply adequacy/permitability/aesthetics.
5. Develop capital cost estimate for each alternative.
6. Other comments on alternatives.
7. Identify the least alternative or combination of alternatives to ultimately supply 40
MGD.
ASSUMPTIONS:
1. Pipeline designed for a minimum velocity of ~ 2 FPS, 8 FPS max., and based on Ductile
Iron Pipe (DIP).
2. Max. system allowable pressure is 250 psi before a booster station is required.
3. Pipeline discharge location is the headwaters of Lake Howell.
4. Capital costs: 10 MGD PS/Intake ~ $8M; 24 MGD PS/Intake ~ $10M; 36” ~
$1.59M/mile; 30” ~ $1.32M/mile; 10 MGD Booster Station $2.6M; 24 MGD Booster
Station $2.2M; (See attached for Capital Cost development).
ALT. NO. 1: New intake & pipeline from Lake Norman to Coddle Creek (Lake Howell)
Reservoir.
1. From Lake Norman where Perth Road crosses over the lake, take Perth Road to NC 150,
head east along NC 150 to Williamson Road, then to Brawley School Road, then turn onto
West Wilson Road, head east to S. Main Street, (NC 115), turn onto Timber Road heading
east, then begin paralleling the power line easement heading east to the Coddle Creek
Reservoir. Length is ~ 16 miles (84,480 feet).
LONG TERM WATER SUPPLY OPTIONS (40 MGD)
CLT/2006UPDATE_C&KWSOPTIONSTM.DOC 2
2. Pipe sizes considered: 36”.
Pipe Size Velocity Head Loss per
1000’ Pipe
Static
Head
(24 MGD) 36” 4.08 1.81 120
3. Potentially good raw water source; requires an IBT; but IBT stays inside the larger Yadkin -
Pee Dee river basin.
4. Capital Costs:
(24 MGD) 36-inch Pipeline:
16 miles pipe @ $1.59M/mile = $25.4M
No BPS = $0M
24 MGD Intake & PS = $10M
Total = $35.4M
ALT. NO. 2: New Intake and pipeline from the Tuckertown Reservoir on the Yadkin River to
Mt. Pleasant.
1. From the City of Albemarle’s intake at the Tuckertown Reservoir on the Yadkin River head
west on NC 49 through Mt. Pleasant to the intersection of NC 73 and NC 49. New pipeline
will tie into the existing pipeline in Mt. Pleasant. Length is ~ 18 miles (95,040 feet).
2. Pipe size considered: 30” to match existing Second Creek pipeline.
Pipe Size Velocity Head Loss per
1000’ Pipe
Static
Head
(10 MGD) 30” 2.94 0.78 120
3. Potentially good raw water source; requires an IBT; but IBT stays inside the larger Yadkin -
Pee Dee river basin.
4. Capital Costs:
(10 MGD) 30-inch Pipeline:
18 miles pipe @ $1.32M/mile = $23.7M
No BPS = $0M
10 MGD Intake & PS = $2.6M
Total = $26.3M
ALT. NO. 3: New intake and pipeline from High Rock Lake to Kannapolis Lake.
LONG TERM WATER SUPPLY OPTIONS (40 MGD)
CLT/2006UPDATE_C&KWSOPTIONSTM.DOC 3
1. Begin at High Rock Lake at the end of Cranford Road, follow Cranford Road to Leonard
Road, (SR 2168), then head south on Leonard Road to the power line easement, follow the
power line easement to NC 152, head west on NC 152 to Main Street in China Grove, (SR
2739), to Mt. Moriah Church Road which becomes Cannon Farm Road to Kannapolis Lake.
Length is ~ 25 miles (132,000 feet).
2. Pipe sizes considered: 30”
Pipe Size Velocity Head Loss per
1000’ Pipe
Static
Head
(10 MGD) 30” 2.94 0.78 220
3. Potentially good dependable raw water source; requires an IBT; but IBT stays inside the
larger Yadkin - Pee Dee river basin.
4. Capital Costs:
(10 MGD) 30-inch Pipeline:
25 miles pipe @ $1.32M/mile = $32.9M
No BPS = $0M
10 MGD Intake & PS = $10M
Total = $42.9M
ALT. No. 4: New intake and pipeline from Coddle Creek (Lake Howell) Reservoir to Rocky
River.
1. Begin at Coddle Creek Reservoir where the pipeline easement crosses Coddle Creek, follow
the pipeline easement to the southwest, where the pipeline easement crosses with another
pipeline easement follow the pipeline easement to the southeast, then follow a power line
easement approximately 1 mile to the Rocky River. Length is ~ 27.5 miles (145,200 feet).
2. Pipe sizes considered: 36”.
Pipe Size Velocity Head Loss per
1000’ Pipe
Static
Head
(24 MGD) 36” 4.08 1.81 160
3. Raw water source is future WRF effluent making it dependent on completion of other
projects. Will likely have public perception problems.
4. Capital Costs:
(24 MGD) 36-inch Pipeline:
27.5 miles pipe @ $1.59M/mile = $43.7M
LONG TERM WATER SUPPLY OPTIONS (40 MGD)
CLT/2006UPDATE_C&KWSOPTIONSTM.DOC 4
24 MGD BPS = $2.2M
24 MGD Intake & PS = $10M
Total = $55.9M
RANKING OF ALTERNATIVES BYLOWEST CAPITAL COST
Capital Cost by Supply Amount:
24 MGD 10 MGD 10 MGD 24 MGD
Alternative No. 1 Lake Norman to Lake
Howell
36”/$35.4M
Alternative No. 2 Tuckertown Reservoir
Mt. Pleasant
30”/$26.3M
Alternative No. 3 High Rock Lake to
Kannapolis Lake
30”/$42.9M
Alternative No. 4 Lake Howell to Rocky
River
36”/$55.9M