HomeMy WebLinkAbout9 Electric Master Plan Agenda Item # 9
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Memorandum
To: Board of Directors
From: Joe Horvath, District Electrical Engineer
Date: March 29, 2002
Subject: Electric System Master Plan — Final Draft
A. Attached is the final draft of the Electric System Master Plan for your review. I
have incorporated your comments from the preliminary draft document in
preparation for submitting this Plan to other agencies as part of the California
Environmental Quality Act(CEQA) process. I welcome your comments and
suggestions for improvement so that a final version of this Plan can be prepared.
Recommendation:
No formal Board action is requested at this time.
B. I have asked Keith Knibb of Sauers Engineering to prepare a proposal for
providing the District with professional services to perform an environmental
review in compliance with CEQA requirements (proposal attached).The scope of
services would include the preparation of an Environmental Initial Study and a
Negative Declaration following CEQA Guidelines. Sauers will also coordinate
the public hearing, receive oral and written comments, prepare responses, prepare
a final Negative Declaration and Notice of Determination, and file appropriate
final documents with the County Clerk and State Clearinghouse. Final adoption of
the Master Plan is anticipated to occur by early July of this year (see the schedule
of services chart in the proposal). Sauers is requesting a fee of$7000 to perform
this work.
Recommendation:
I recommend that the Board authorize Sauers Engineering to perform an
environmental review and other services for the Electric System Master Plan
according to the attached proposal for a fixed fee of$7000.
@Bt261e]2 01:4@arr. P. 001
Saucrs Engineering, inc:.
Civil & Environmental Engineers
March 14,2002
Mr, Joe Horvath,District Electrical Engineer
Truckee Donner Public Utility District
P.O.Box 309
Truckee;CA 96160-0309
SUBJECT! ELECTRIC SYSTEM MASTER PLAN UPDATE-
ENVIRONMENTAL REVIEW
Dear Joe:
This letter is our proposal for professional services to provide environmental review
in compliance with the California Environmental Quality Act(CEQA)for the
District's Electric System Master Plan Update. The project would involve the
updated mast
er plan for the electric distribution system.
District's adoption of an p p -
Based on our experience with similar District projects, we anticipate that a negative
declaration will be the appropriate level of review for the project_
Scope of Services
For the adoption of the master plan update we will prepare an environmental initial
study and proposed negative declaration following CEQA Guidelines. We will
distribute preliminary documents to the State Clearinghouse and responsible
agencies. We will coordinate a public hearing, receive oral and written continents
and prepare response-- We will prepare a Coral negative declaration and notice of
determination and file appropriate final documents with the County Clerk and State
Clearinghouse,
Schedule of Services
We anticipate needing approximately thirty to forty-five days following the District's
authorization to proceed to prepare the initial study and the proposed negative
declaration- Depending on the number and nature of conaments,preparation of final
documents for approval by the District should take an additional thirty to sixty days
including the public review period and public hearing. We expect the schedule to be
generally as shown below.
Task April May June Jury
Initial Study
x.
Public/Agency ReviewiHealmg
CornmentsrResponses rx'
Final Adoption
440 Lower Gra<s Valley Road, Suite A,tNeva&City. CA 95959 (530) 265-9021 Fax (530)265-6834
Z)w2rIoz 01;t9sm P. 002
i
Engineer's Fee
We propose to provide the above described services for a fixed fee of S7,000. These
fees do not include filing fees with the Department of Fish and Game.
Closure
Thank you for the opportunity to provide this proposal for environmental review
services for the master plan update project. I am available to discuss this proposal
with you at your convenience and with the Board of Directors at the March 20,2002
board meeting.
Y rs truly,
Keith Knrbb
CAPITAL IMPROVEMENT PROJECTS
Electric System Master Plan
Introduction and Summary
The Truckee Donner Public Utility District (District) owns and operates an electric
distribution system serving approximately 12,000 residential and commercial customers.
The electric system consists of 4 substations and approximately 164 miles of 12.47kV
distribution lines including about 12 miles of underground distribution cables. During
December 2001, the system supplied 13,400,00 kWH of energy and a peak demand of
29,040 kW. Over the next 15 years, the District's electric energy sales and peak loads are
projected to grow 2 to 3 percent on an annual basis. This Master Plan therefore reflects a
15-year planning period, for the calendar and fiscal years 2003 through 2017.
Capital improvements to the District's system will be required to provide for the
projected load growth over the 15-year planning period, increase system capacity, and
expand or maintain the operating flexibility of the electric system. Recommended capital
improvements include some of the previously identified projects in the 1992 Electric
Master Plan that have not yet been constructed.The proposed distribution system and
substation capital improvement projects are listed in Table 1 and depicted n Exhibit 1.
After construction of these proposed improvements, the District's system will be capable
of serving projected loads through the year 2017 without low voltage or conductor
overloads during peak loads at normal and contingency conditions.
Cost estimates have been prepared for the proposed capital improvements to the District's
electrical distribution system. The dollar amounts listed below and in Table 1 are based
on unit costs prepared for varying types of underground, overhead, and substation
construction and include allowances for construction (labor and materials), engineering
services, overheads, and contingencies. All costs are in 2002 dollars. The following list
summarizes the annual cost of the proposed improvements by fiscal year:
Year Cost
2003 $156,300
2004 $151,500
2005 $482,900
2006 $402,000
2007 $362,900
2008 $908,700
2009 $340,400
2010 $282,600
03/29/02 Final Draft Page 1 of 4
2011 $494,500
2012 $535,900
2013 $946,100
2014 $774,800
2015 $708,700
2016 $1,957,100
2017 $886,000
15-Year Total $9,390,400
The average cost to the District to implement the proposed capital improvements is
approximately $626,000 per year.
Cost Estimate Methodology
Unit construction cost estimates were developed for varying types of new overhead and
new underground distribution line construction on a per-mile basis, for the upgrade of
Donner Lake Substation, and for a new substation to serve District loads in the Glenshire
area. Cost estimates include allowances for construction, engineering services, overheads,
and contingencies. Construction costs include materials, labor, and other services, such as
outside contractors, necessary for each type of construction. Material and labor costs
reflect the District's current standard construction costs updated with year 2002
overheads. The civil site work costs for trenching and excavation were based on actual
bid costs received from area contractors for similar District projects completed within the
last three years. An allowance of 20 percent of construction costs has been included to
cover construction contingences associated with each cost estimate. An additional
allowance of 20 percent of construction costs has been included to cover engineering,
legal, administrative costs. Unit construction costs are listed and summarized by type of
construction in Table 2.
The costs of overhead distribution line construction were estimated using 397MCM size
conductors with 160-foot spans between pole locations, for a total of 34 poles per mile on
average.Pole size was assumed to be the District's standard 45 foot, class 2 Douglas Fir
treated wood pole. Variations to overhead line construction included modifying the
number of angles and deadend poles per mile (Table 2—heavy, and light feeder
construction). A separate estimate was prepared for performing a reconductor project on
an existing overhead distribution line where the conductors are replaced with a larger,
higher capacity conductor. In addition, an estimate was also prepared for underbuilding a
distribution circuit on Sierra Pacific's existing 60kV wood pole transmission line.
The costs of underground distribution line construction were estimated using 500MCM
and 1/0 AWG size aluminum conductor medium voltage cables, placed in 6-inch conduit
for mainline circuits and 4-inch conduit for distribution loops. Conduit runs were limited
to a maximum of 500 feet between pulling locations in accordance with good cable
03/29/02 Final Draft Page 2 of 4
installation practices. Variations to underground line construction included modifying the
number of vaults, switches,junction enclosures, road crossings, and transformers per
mile (Table 2 - heavy, medium, light and express feeder construction). In addition, a
special estimate was prepared for those locations were the District has previously
installed conduit in joint trenches with other utilities in anticipation of future use.In these
areas, only the installation of electrical equipment and vaults are required to complete the
underground system (Table 2 - special feeder construction).
The cost to upgrade Donner Lake Substation includes the installation of new
transformers, voltage regulators, high and low side distribution bus, and the removal of
old equipment. Site work costs such as a new entrance road, foundations, and a
grounding system are also included. It is proposed to increase the existing capacity of
Donner Lake substation from 3.75MVA to 15MVA, the same capacity as the District's
other three substations.This will increase the District's overall reliability by allowing
load transfers among substations upon the loss of any one substation during an
emergency condition.
The District's electrical distribution system in the Glenshire area is presently served via a
primary meter from Sierra Pacific's Glenshire substation at a voltage of 14.4kV (this is
Sierra Pacific's standard distribution system voltage). It is proposed that the District
extend Truckee Circuit 1 along Glenshire Drive and install a small substation to convert
from the District's standard 12.47kV system voltage to 14.4kV. The new Glenshire
substation would consist of a 2.5MVA, 12.4 7kV to 14.4kV transformer, and associated
switches, disconnects, transformer foundation, grounding system, fence, and entrance
road to be constructed on property owned by the District and located along Glenshire
Drive near Berkshire Circle. The construction of this substation and extension of Truckee
Circuit 1 to Glenshire will give the District the capacity to serve customers in the event of
a Sierra Pacific system outage. In the past, these outages have included transmission
system, distribution system, and substation outages upstream of the District's current
primary metering point, which are all outside of the District's control to restore service.
Project Justifications
Table I includes a column where the justifications of individual projects are briefly
noted.These justifications are grouped into the following categories and are briefly
explained below:
• Upgrade main line to 397MCM
• Provide full capacity feeder ties
• Provide capacity for looping
• Load growth/transfer capacity
• Capacity addition to reduce dependence on SPPC
• Increase Feeder Outlet Capacity
03/29/02 Final Draft Page 3 of 4
Upgrade main line to 397MCM: The District is currently using 397MCM size conductors
for main line feeder overhead circuit configuration (main line refers to the main or
backbone 3 phase feeder sections which carry the bulk of the load on a feeder circuit).
This conductor size allows feeder loading to not exceed 50 percent of the conductor
ampacity rating under normal maximum operating conditions.This allows for up to 100
percent loading during contingency or emergency operating conditions such as picking
up the load from an adjacent feeder.
Provide full capacity feeder ties: The District's distribution feeders should have back-up
ties to other feeders, including feeders from other substations. Providing sufficient full
capacity feeder ties to feeders from other substations is necessary to cover the loss of any
one substation during an emergency condition and to provide operational flexibility for
equipment maintenance and repair.
Provide capacity for looping: Currently, some of the District's main distribution feeders
are a radial only configuration.This means that for an outage on a feeder, all customers
downstream of the outage point will be without power. The construction, where possible,
of loops within individual feeders allows the District during emergency conditions to
baekfeed customer areas and remove from service the smallest possible line sections,
affecting the smallest number of customers, while repairs are made.
Load growthh/transfer capacity: Adequate reserve substation transformer capacity must be
provided to serve District loads with any one substation out of service. See also the
discussion about the Donner Lake Substation in the Cost Estimate Methodology section
above.
Capacity addition to reduce dependence on SPPC: The construction of the new Glenshire
Substation will give the District the capacity to serve customers in the event of a Sierra
Pacific system outage. See the discussion about the new Glenshire Substation in the Cost
Estimate Methodology section above.
Increase Feeder Outlet Capacity: Feeders out of substations should be placed
underground using 750MCM size conductors where practical. Individual feeder
capacities will be increased and the station reliability will be improved due to reduced
exposure to outages associated with exposure to trees, animals, vehicles, and weather
related phenomena. This will allow trees and shrubs to be planted around the substation
perimeter, virtually camouflaging the station from the public's view. This will not only
be aesthetically pleasing but may also reduce vandalism.
In summary, this master plan provides for adequate capacity to meet existing and
projected District loads in a reliable manner. This is achieved because the District's
system will be flexible enough to be operated as necessary to handle project loads under
normal and emergency conditions to keep the highest possible number of customers in
service. The proposed improvements will provide adequate capacity and reliable service
to District customers through the year 2017 while providing for projected load growth.
03/29/02 Final Draft Page 4 of 4
TABLE 1
SUMMARY OF CAPITAL IMPROVEMENT PROGRAM PROJECTS
Electric System Master Plan -2002
Const. Unit Construction Cost
Year Substation/Feeder Description of Project(1) Justification(2) Code(3) Quantity Units Cost(4) Project Subtotal
2003 Martis Valley 1 Reconductor existing 3ph overhead Upgrade main line to 397MCM OH-RC 1,600 feet $27.91 $44,661
line from Highway 267 to the intersection
of Ponderosa and Palisades Dr.
Martis Valley 1 Reconductor existing 1 ph overhead line Provide full capacity feeder tie OH-RC 4,000 feet $27.91 $111,654
to 3 ph adjacent to Jeffrey Pine from the to MV2
intersection of Ponderosa and
Palisades Dr.to Highway 267 $156,300
2004 Truckee 5 Reconductor existing 1 ph overhead line Provide looping capacity for T5 OH-RC 3,500 feet $27.91 $97,697
to 3 ph through Sugar Pine Estates
along Alder Drive to Alder Creek Rd.
Truckee 5 Construct new 3 ph overhead line along Provide looping capacity for T5 OH-HF 1,300 feet $41.36 $53,773
Alder Creek Rd.from the intersection of
Alder Drive to Highway 89 and the
Prosser Lakeview area $151,500
2005 Tahoe Donner 3 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 6,600 feet $27.91 $184,229
along Northwoods Blvd.from the
intersection of Northwoods and
Northwoods to Donner Pass Rd.
Truckee 5 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 10,700 feet $27.91 $298,674
from the intersection of Alder Dr. and
Beacon Rd. to Pannonia Ranchos via
Alder Dr., Rainbow Dr. and
Prosser Dam Rd. $482,900
2006 Tahoe Donner 1 &2 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 14,400 feet $27.91 $401,953
along Northwoods Blvd.from the
substation to Muhlebach and from the
substation to Ramshorn $402,000
03/28/2002 Final Draft Page 1 of 6
TABLE 1
SUMMARY OF CAPITAL IMPROVEMENT PROGRAM PROJECTS
Electric System Master Plan -2002
Const. Unit Construction Cost
Year Substation/Feeder Description of Project(1) Justification(2) Code(3) Quantity Units Cost(4) Project Subtotal
2007 Tahoe Donner 3 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 4,400 feet $27.91 $122,819
along Skislope Way from the
substation to Herringbone Dr,
Martis Valley 3 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 5,600 feet $27.91 $156,315
along Deerfield Dr, from Highway 89S
to Coldstream Rd.
Martis Valley 3 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 3,000 feet $27.91 $83,740
from the intersection of Deerfield Dr.
and Coldstream Rd. to the end of the
circuit at Northwoods and
Donner Pass Rd. (includes crossing
of 1-80 near the A . Inspection Station) $362,900
2008 Donner Lake Upgrade Substation from 3.75 to 15MVA Load growth/transfer capacity Sub-DL 1 each $908,683 $908,683
Substation $908,700
2009 Tahoe Donner 3 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 5,700 feet $27.91 $159,107
along Skislope Way from the
intersection of Skislope and
Herringbone Dr.to Teton Way
Truckee 5 Reconductor existing 1 ph overhead line Provide full capacity feeder tie OH-RC 4,500 feet $27.91 $125,610
to 3 ph through Pannonia Ranchos to T6
from the intersection of Prosser Dam
Road and Mt. Roseview Dr. along
Mt. Roseview Dr.and Dove Terrace
Truckee 5 Convert existing 1 ph underground tap Provide full capacity feeder tie UG-SP 1,200 feet $46.43 $55,714
line to 3 ph configuration between to T6
Dave Terrace and Union Mills Rd.
(the road to CHP scales) R $340,400
03/28/2002 Final Draft Page 2 of 6
TABLE 1
SUMMARY OF CAPITAL IMPROVEMENT PROGRAM PROJECTS
Electric System Master Plan-2002
Const. Unit Construction Cost
Year Substation/Feeder Description of Project(1) Justification(2) Code(3) Quantity Units Cost(4) Project Subtotal
2010 Truckee Substation Convert existing overhead feeder Increase Feeder Outlet Capacity UG-MF 1000 each $161.82 $161,818
getaway circuits to an underground
configuration for feeder circuits T2,
T3, and T4
Truckee Substation Convert existing overhead feeder Increase Feeder Outlet Capacity UG-SP 1200 each $46.43 $55,714
getaway circuits to an underground
configuration via existing 6"conduit
for feeder circuit Tt
Tahoe Donner 3 Extend 3 ph feeder under SPPC's Provide full capacity feeder tie UG-SP 500 feet $46.43 $23,214
60kv line for connection to TD1 to TD1
via existing 6" conduit installed in 2000
Tahoe Donner 3 Reconductor existing 1 ph overhead line Provide full capacity feeder tie OH-RC 1,500 feet $27.91 $41,870
to 3 ph along Skislope Way from to TD1
Teton to Davos and along Davos to
Northwoods Blvd. $282,600
2011 Donner Lake 3 Construct new feeder to be underbuilt Provide full capacity feeder tie OH-UB 11,500 feet $43.00 $494,511
on SPPC's 60kV line that connects circuit between DL and
Donner Lake and Tahoe Donner TO substations
substations $494,500
2012 Donner Lake 2 Reconductor existing 1 ph overhead line Provide full capacity feeder tie OH-RC 1,600 feet $2T91 $44,661
to 3 ph along So. Shore Dr.from to DI-1
14036 So. Shore Dr.to Donner St. Park
Tahoe Donner 1 &2 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 17,600 feet $27.91 $491,276
along Northwoods Blvd. from
Muhlebach to Ramshorn $535,900
03/28/2002 Final Draft Page 3 of 6
TABLE 1
SUMMARY OF CAPITAL IMPROVEMENT PROGRAM PROJECTS
Electric System Master Plan -2002
Const. Unit Construction Cost
Year Substation/Feeder Description of Project(1) Justification(2) Code(3) Quantity Units Cost(4) Project Subtotal
2013 Donner Lake 1 Convert existing 1 ph underground tap Provide full capacity feeder tie UG-XF 7,100 feet $94.73 $672,574
line to 3 ph configuration through to DL2
Donner State Park from Donner Pass
Rd.to the end of South Shore Dr.
Martis Valley 3 Reconductor existing 3ph overhead line Upgrade main line to 397MCM OH-RC 9,800 feet $27.91 $273,552
along West River St. between
Highway 267 and Deerfield Dr. $946,100
2014 Martis Valley 2 Extend underground 3 ph feeder along Provide looping capacity for MV2 UG-LF 2,600 feet $115.87 $301,253
the new section of Soaring Way between
the end of the existing Soaring Way
and Joerger Rd.
Mortis Valley 4 Extend 3 ph underground feeder from Provide full capacity feeder tie UG-SP 1,600 feet $46.43 $74,286
Martis Valley Well area along Joerger Rd. to MV2
to TSD offices via existing 6"conduit
Truckee 1 Extend 3 ph feeder underground along Capacity addition to reduce UG-SP 8,600 feet $46.43 $399,287
Glenshire Dr. and through the dependence on SPPC
Glenshire bridge via existing 6"conduit
installed in 2000 $774,800
2015 Truckee 1 & New Glenshire Substation,2.5MVA, Capacity addition to reduce Sub-Glen 1 each $152,552 $152,552
Glenshire 1 12.5/14.4kV, located along dependence on SPPC
Glenshire Drive near Berkshire Circle
Martis Valley 4 Extend 3 ph underground feeder along Provide full capacity feeder tie UG-LF 4,800 feet $115.87 $556,159
Joerger Rd.from the TSD offices to MV2
to Highway 267 $708,700
03/28/2002 Final Draft Page 4 of 6
TABLE 1
SUMMARY OF CAPITAL IMPROVEMENT PROGRAM PROJECTS
Electric System Master Plan -2002
Const. Unit Construction Cost
Year Substation/Feeder Description of Project(1) Justification(2) Code(3) Quantity Units Cost(4) Project Subtotal
2016 Truckee 5 Extend 3 ph underground feeder along Provide full capacity feeder tie UG-HF 9,500 feet $206.01 $1,957,093
Pioneer Trail Rd.from the intersection to TD3
of Pioneer Trail Rd. and Thayer Dr. to
Northwoods Blvd. (Pioneer Trail Rd. is
the proposed new third access road
into Tahoe Donner) $1,957,100
2017 Truckee 4 Extend 3 ph underground feeder along Provide full capacity feeder tie UG-HF 3,850 feet $206.01 $793,137
Bridge St. and Euer Valley Rd.from the to T5
intersection of Bridge and Jibboom
Streets in downtown Truckee to
Pioneer Trail Rd. (new third access road
into Tahoe Donner)
Martis Valley 3 Extend feeder to serve end of MV3 at Provide full capacity feeder ties UG-SP 2,000 feet $46.43 $92,857
Northwoods and Donner Pass Rd. to T4 and TD3
via existing conduit installed through
new DPR bridge over 1-80. Remove
existing overhead crossing of 1-80
adjacent to A . Inspection Station $886,000
15-Year Total Cost $9,390,400
03/28/2002 Final Draft Page 5 of 6
TABLE 1
SUMMARY OF CAPITAL IMPROVEMENT PROGRAM PROJECTS
Electric System Master Plan -2002
Const. Unit Construction Cost
Year Substation/Feeder Description of Project(1) Justification(2) Code(3) Quantity Units Cost(4) Project Subtotal
Cost Subtotals by Year
Notes: Year Cost
1. See Exhibit 1 for a depiction of project locations. 1 2003 $156,300
2. See Master Plan report for an explanation of project justifications. 2 2004 $151,500
3. See Table 2 for a description of construction codes. 3 2005 $482,900
4. Costs are in 2002 dollars and include allowances for construction contingencies of 20 percent 4 2006 $402,000
and allowances for engineering administration of an additional 20 percent. 5 2007 $362,900
6 2008 $908,700
7 2009 $340,400
8 2010 $282,600
9 2011 $494,500
10 2012 $535,900
11 2013 $946,100
12 2014 $774,800
13 2015 $708,700
14 2016 $1,957,100
15 2017 $886,000
15-Year Total Cost $9,390,400
03/28/2002 Final Draft Page 6 of 6
TABLE 2
COST DETAIL SUMMARY
Electric System Master Plan -2002
Type of Cost
Construction Configuration Description Code $/Mile $/Foot
Overhead Heavy Feeder 3 Phase, 397AAC, 45/2 poles, 160 ft. spans OH-HF $218,400 $41
8 tangent, 20 light angle, &6 deadend poles per mile
Light Feeder 3 Phase, 397AAC, 45/2 poles, 160 ft. spans OH-LF $199,800 $38
22 tangent, 8 light angle, &4 deadend poles per mile
Reconductor 3 Phase, 397AAC, 45/2 poles, 160 ft. spans OH-RC $147,400 $28
replace 25% of existing poles & all crossarms
Underbuild SPPC 3 Phase, 397AAC, 50/H3 poles, 240 ft. spans OH-UB $227,000 $43
6 tangent, 12 light angle, &2 deadend poles per mile
Underground Heavy Feeder 3 Phase, 500MCM cable, 5 vaults, 5 switches, 5 JEs, UG-HF $1,087,700 $206
10 road crossings, 5-3ph transformers with 10 services,
and 10 - 1ph transformers with 20 services per mile
Medium Feeder 3 Phase, 500MCM cable, 3 vaults, 8 switches, 3 JEs, UG-MF $854,400 $162
5 road crossings, 3 - 3ph transformers with 5 services,
and 5 - 1 ph transformers with 10 services per mile
Light Feeder 3 Phase, 500MCM cable, 9 vaults, 1 switches, 2 JEs, UG-LF $611,800 $116
2 road crossings, 2 - 3ph transformers with 4 services,
and 2 - 1 ph transformers with 4 services per mile
Express Feeder 3 Phase, 500MCM cable, 9 vaults, 2 road crossings, UG-XF $500,200 $95
no transformers, switches, or junction enclosures
Special Feeder 3 Phase, 500MCM cable, 9 vaults, 2 road crossings, UG-SP $245,100 $46
no transformers, switches, or junction enclosures
Existing conduit, only vault installation required.
Substations Description Code Cost
Donner Lake Upgrade capacity to 15MVA Sub-DL $908,700
Glenshire Install 2.5MVA, 12.5/14.4kV transformer to serve Sub-Glen $152,600
Glenshire area from Truckee Circuit 1
Notes:
1. Costs are in 2002 dollars.
2. Costs include allowances for construction contingencies of 20 percent and allowances for engineering and
administration of an additional 20 percent.
03/28/2002 Final Draft