Technical Memorandum Cost Criteria for 2010
System Capacity Plan
PREPARED BY: My Huynh
DATE: September 13, 2011
REVIEWED BY: Sonny Lunde
INTRODUCTION
This Technical Memorandum presents the methodology used to develop estimated costs for project shed areas
proposed in the Sacramento Area Sewer District System Capacity Plan 2010. The estimated costs may then be
incorporated into SASD’s rate and fee study.
1. DEVELOPMENT OF ESTIMATED COST
Estimates of the capital costs associated with the proposed project areas are order of magnitude estimates. An
order of magnitude estimate is one that is made without detailed engineering data, and uses techniques such as
cost curves and scaling factors from similar projects. The overall expected level of accuracy of the cost estimates
is approximately 30%. All costs presented in this memorandum have been adjusted to an Engineering News
Record construction cost index of 9527, which represents the average of the January 2011 ENR cost indexes for
the San Francisco area (10116) and the “20-Cities” ENR average (8938).
The estimated costs were developed using a baseline pipe construction cost with added cost and markups for
related items. An example cost estimate sheet for a hypothetical project is presented in Figure 1.
Figure 1 – Cost Estimate Sheet Example
+
+
+
+
+
=
+
=
+
=
+
+
=
2010 SCP Tech Memo - 7 Cost
Baseline Pipe Construction Costs
Additional Costs for Geotechnical Factors
Additional Costs Traffic Control
Additional Costs for Productivity Factors
Surface Restoration Costs
Costs for Special Structures and Pump Stations
Subtotal
5% Mobilization/Demobilization
Estimated Construction Cost Subtotal
30% Contingencies for Unknown Conditions
ESTIMATED CONSTRUCTION COST
Right-of-Way/Easement Acquisition
25% Engineering, Administration, and Legal Cost
TOTAL PROJECT COST
- Final.Docx
Page 1 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
2. SUMMARY OF ESTIMATED UNIT COST
For easy reference, a summary of estimated unit cost is included in Table 1.
Table 1 – Summary of Estimated Unit Cost
Item
Description
Unit Cost
Range
Section
Reference
Baseline Construction
Open Cut Gravity Sewer
8 to 42-inch diameter, 8 to 28 feet deep
$160 to
$680/lf
3.1.1
Open Cut DIP Force Main
4 to 18-inch diameter, 4 to 16 feet deep
$140 to
$430/lf
3.1.2
Trenchless Pipe Construction
Bore and Jack, Microtunnel, Pipe Ramming.
With and without casing
$305 to
$1,700/lf
3.1.3
Geotechnical Factors
Additional Dewater
Deep well system
$45 to $60/lf
3.2.1
Additional Sheeting and
Shoring
Trench boxes, solid shoring, and sheet piles
$30 to $710/lf
3.2.2
Developed Areas
100% of
baseline cost
Undeveloped Areas
20% of
baseline cost
Northeastern part of service area
100% of
baseline cost
3.2.3
For pipe alignments along major roads with
four or more lanes of traffic.
$45/lf
3.3
Congested Traffic/Utility
Corridor
For pipe alignments along major roads with
four or more lanes of traffic.
15% of
baseline cost
3.4.1
Remove and Replace Delay
Factor
For pipe alignments to be upsized in place.
25% of
baseline cost
3.4.2
Cobble Areas
Hard Rock Areas
3.2.3
Traffic Control
Additional Traffic Control
Productivity Factors
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 2 of 18
January 12, 2012
DRAFT
Table 1 – Summary of Estimated Unit Cost - Continued
Item
Technical Memorandum #7
Description
Unit Cost
Range
Section
Reference
Surface Restoration
Pavement Restoration
Final Paving and patch paving
15 feet width
$100/lf
3.5.1
Landscape Restoration
Replanting in medians and landscaped area
40 feet width
$3.00/sf
3.5.2
Revegetation
Hydroseeding in open areas
80 feet width
$0.25/sf
3.5.2
Creek Restoration
Replanting and minor bank erosion control
40 feet width
$12/sf
3.5.2
Junction Structures
Junction, transition, and turning structure
$25,000 to
$850,000 per
structure
3.6.1
Pump Stations
10 MGD or less firm capacity
Based on low, medium, and high total
dynamic heads.
$0.5 to $6.1M
3.6.2
Sewer Structures
Mobilization/Demobilization
% of subtotal
5%
3.7
Contingencies
% of Estimated Construction Cost Subtotal
30%
3.8
Easement Acquisition
Acquisition Cost
Title reports, appraisals, real estate staff
time
$7,000 per
parcel
3.9
Easements in Newly
Constructed Development
Granted to SASD as condition of
development
No Cost to
SASD
3.9
Temporary Construction
Easements
80 feet width
$0.80/sf
3.9
Permanent Easement
20 feet width
$4.00/sf
3.9
25%
3.10
Engineering, Administration, and
Legal Costs
2010 SCP Tech Memo - 7 Cost
- Final.Docx
% of Estimated Construction Cost
Page 3 of 18
January 12, 2012
DRAFT
3. BASIS OF ESTIMATED COST
Technical Memorandum #7
Construction costs include costs for installation of gravity pipelines, force mains, and pump stations. The basis
for these costs is described below.
3.1 Baseline Pipeline Construction
Baseline pipeline construction costs were developed for open cut gravity sewer trunks, force mains, and
trenchless pipe construction. These costs are based on a combination of construction bids for projects in
Sacramento and other urban areas in California, catalog unit price costing, and adjustments to unit costs
identified in previous SASD Master Plans (2000 and 2006).
Both the baseline gravity pipe and force main construction costs include the following:
Vertical trench walls to reduce utility conflicts
Trench box or hydraulic shores
Select, imported backfill in the pipe zone and native back fill above the pipe zone to the pavement
structural base. It is assumed that the spoil may be hauled to a local disposal site. Backfill would be
compacted to 90 percent to within 2 feet of the ground surface.
Temporary pavement to be placed over excavated areas in traveled roads at the end of each day.
Sump pump in the trench used for minor dewatering.
Minor traffic control including two way flagging, construction area traffic signs, and channelizers.
3.1.1 Open Cut Gravity Sewers
Baseline unit pipe construction costs were developed for gravity collector and trunk sewers ranging from 8 to 42
inches in diameter for four depth-to-invert ranges: 8 to 16 feet, 16 to 20 feet, 20 to 24 feet, and 24 to 28 feet.
These unit costs are presented in Table 2. It was assumed that gravity trunk sewers installed by open-cut
construction would not be constructed deeper than 28 feet deep.
In addition to the baseline gravity pipe and force main cost assumptions, the baseline gravity vcp pipe
construction costs include the following assumptions:
Pipe material: VCP for 8 to 36-inch sewers; and PVC-lined (or calcareous aggregate) RCP for 39-inch and
larger sewers.
Manholes will be located every 400 feet in collector pipes (working pipe capacity of less than 1 mgd,
typically pipes 8-inch to 10-inch) and every 500 feet in trunk sewers (working pipe capacity of 1 mgd or
greater, typically pipes 10-inch or greater).
Trench dams if needed to prevent migration of groundwater along the trench section and/or filter fabric
to prevent migration of soil or intermediate back fill into the pipe zone.
Collector sewer not to exceed 19 feet in depth.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 4 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
Table 2 – Open Cut Gravity Pipe Unit Cost
Pipe Size
(in)
Open Cut Gravity Pipe Installation Cost ($/lf)
8 to 16
feet depth
16 to 20
feet depth
20 to 24
feet depth
24 to 28
feet depth
Vitrified Clay Pipe
8
160
185
______
______
10
190
210
______
______
12
220
235
260
285
15
255
275
300
325
18
285
310
340
370
21
330
355
385
415
24
365
390
420
450
27
395
420
455
490
30
430
460
495
530
33
465
495
530
565
36
495
530
570
610
Reinforced Concrete Pipe
39
530
565
605
645
42
565
600
640
680
3.1.2 Open Cut Ductile Iron Force Main
Unit baseline pipe construction costs for force mains are presented in Table 3. In addition to the baseline gravity
pipe and force main cost assumptions, the baseline force main construction costs include the following
assumptions:
A minimum of 4 feet of cover above the pipe.
Pipe material: Ductile iron pipe.
Air release valves, vacuum release valves, or combination valves located every 3,000 feet in 60-inch
diameter manholes.
Trench dams installed at 100 feet spacing in areas with high groundwater along the trench section and
installation of filter fabric to prevent migration of soil or intermediate back fill in the pipe zone.
Includes trust blocks.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 5 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
Table 3 – Open Cut DIP Force Main Unit Cost
Force Main Size (in)
Less Than 10 Feet Deep
Cost ($/lf)
10 to 16 Feet Deep
Cost ($/lf)
4
140
200
6
150
205
8
160
210
10
170
225
12
180
240
15
245
325
18
275
355
21
300
380
24
355
430
3.1.3 Trenchless Pipe Construction
Trenchless pipe construction is an advantageous pipe method to install pipelines that minimizes impacts to the
public and the restoration. For this System Capacity Plan, baseline pipe construction costs were also developed
for microctunneling, bore and jack, and pipe ramming. Although pipe bursting is often a viable method for
installing and upsizing pipes, its dependency on local utility location information and pipe condition makes it
difficult to consider on a planning level document. The same goes for horizontal directional drilling, with its high
sensitivity to geological conditions. For this reason, SASD has chosen not to include pipe bursting and horizontal
directional drilling as one of its trenchless methods in the System Capacity Plan, but considerations for use can
be evaluated during the Project Development Phase. The following assumptions were made regarding
trenchless pipe construction:
All highway and railroad crossing will require a casing.
All major roads (4 lanes or more) will require a trenchless crossing.
All creek crossing will be constructed using open cut methods (see creek restoration costs in later
section).
Neither mircrotunneling nor bore and jack construction methods will be used in cobble areas (see
section on “cobble and hard rock construction” for definition of cobble area) Pipe ramming will be used
for required trenchless crossings in cobble areas. Pipe ramming requires a steel casing.
Bore and jack equipment for 59-inch diameters and smaller is typically auger boring equipment. Auger
boring is not accurate enough for gravity sewer installation. Auger boring can be used to install casings
for force mains.
Casing is determined by the outside diameter of the carrier pipe bell plus 24 inches with a minimum size
of 36-inches.
Bore and jack equipment for 60-inch diameters and larger is typically open shield equipment (laser
target used to steer). Open shield equipment is accurate enough for gravity sewer installation.
Except for microtunneling, unit pricing includes mobilization/demobilization, bore, casing (if specified),
and pipe. Microtunneling includes all of the previous items except for mobilization/demobilization. For
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 6 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
Microtunneling mobilization/demobilization, bore holes less than 24-inches will cost $110,000; bore
holes 24 to 48-inches will cost $180,000; and bore holes 48 to 72-inches will cost $260,000.
3.1.3.1 Trenchless Construction Cost
The recommended unit costs for trenchless pipe construction are the following:
Table 4 – Trenchless Pipe Construction Unit Cost
Pipe Size
(in)
Direct Jack
(No Casing)
Casing Required
Cobble Area
Microtunneling*
($/lf)
Casing Size
(in)
Microtunneling*
($/lf)
Bore and Jack
($/lf)
Casing Size
(in)
Pipe Ramming
($/lf)
8
820
36
1025
615
37
305
10
820
36
1035
625
40
345
12
820
36
1040
630
42
380
15
845
36
1060
655
47
460
18
845
42
1025
670
55
505
21
895
43
1030
720
56
510
24
895
49
1060
795
61
545
27
980
51
1125
845
63
615
30
980
56
1155
890
68
660
33
980
59
1240
945
71
720
36
980
64
1335
1040
76
820
39
980
68
1470
1105
80
890
42
980
72
1700
1165
84
960
* Unit pricing for microtunneling does not include mobilization and demobilization.
Use the following for microtunnel mobilization and demobilization cost:
Bore holes less than 24-inches $110,000,
Bore holes 24 to 48-inches $180,000,
Bore holes greater than 48-inches $260,000.
3.1.3.2 Jacking and Receiving Pits
The construction for microtunneling, boring and jacking, and pipe ramming pipeline installation also includes
costs associated with the jacking and receiving pits. If a long length of microtunneling is required, then a series
of drives with the associated pits will be used. The maximum drive lengths of the boring or tunneling machines
are shown in Table 5. These drive length are conservative and will work for most areas of Sacramento County.
The recommended costs for jacking and receiving pits are shown in Table 6.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 7 of 18
January 12, 2012
DRAFT
Table 5 – Maximum Drive Lengths
Pipe Diameter (in)
3.2 Geotechnical Factors
Depending on location and site conditions, pipeline construction may require additional costs associated with
geotechnical factors. These additional costs include increased dewatering, additional sheeting and shoring, and
special equipment or methods associated with construction in difficult soil conditions such as cobbles or rock.
3.2.1 Additional Dewater
The baseline pipeline costs include the cost of sump pump in the trench for minor dewatering. Some areas of
Sacramento County require a more aggressive dewatering scheme. The cost of installation and maintenance of
each dewatering well could range from $1,000 to $5000. The range of costs depends on depth of wells, the need
for sand screens, and the proximity of electrical services for the pump motors. The cost of dewatering also
depends upon the spacing of the dewatering wells. To adequately dewater a trench with high groundwater,
dewatering wells are generally located at least 50 to 75 feet apart. If the soils have large amounts of clay or
other materials which decrease the capability to dewater the soils, wells are frequently spaced 50 feet apart. For
the purposes of this System Capacity Plan, it is assumed that the wells would be spaced 50 feet apart. Therefore,
the unit dewatering cost could range from $20 to $100 per foot.
Dewatering cost will be applied in areas of the County with known high groundwater as shown Figure 2.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 8 of 18
January 12, 2012
DRAFT
Figure 2 – High Groundwater Areas
Technical Memorandum #7
For the purpose of this System Capacity Plan, dewatering cost from Table 7 will be applied in areas of the County
with known high groundwater as shown in Figure 2.
Table 7 – Additional Dewatering Unit Cost
Groundwater Infiltration
Additional Dewatering Cost
200 GPD/Acre
$45/LF of pipe
500 GPD/Acre
$60/LF of pipe
All Other Areas
$0 – Minor dewatering included in
the cost of the pipe installation.
3.2.2 Additional Sheeting and Shoring
Sheeting and shoring methods could range from hydraulic shores to interlocking full-sheets. The specific type of
shoring used will depend upon trench depths, soil conditions, and groundwater levels. For the purposes of
determining sheeting and shoring requirements for this System Capacity Plan, three different ground conditions
will be used: no groundwater, undeveloped areas with high groundwater, and developed areas with high
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 9 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
groundwater. For pipeline constructed in areas without high groundwater, it is assumed that hydraulic shores or
trench boxes will be used. This cost is included in the baseline pipe construction cost.
The recommended sheeting and shoring costs for the three conditions and various pipeline depths are
presented in Table 8. The cost of the solid shoring ranges from $1 to $3 per square foot. The cost of the sheet
piles ranges from $20 to $40 per square foot. These costs have been used to also assume that any excavation
deeper than 8 feet in areas of high groundwater area of the County, where the subsurface profile typically
consists of 10 feet of clay over clean sands. Therefore, additional dewatering costs will also be required for open
cut construction in areas of high groundwater (except where sheet piles are used), as indicated in Table 8.
Table 8 – Shoring and Dewater Unit Cost for Various Groundwater Conditions
Depth to
Invert (ft)
8 to 16
16 to 20
20 to 24
24 to 28
No Groundwater
High Groundwater
Undeveloped Area
Baseline
Partially laid back trench with
trench box and dewatering wells.
Solid shoring and dewatering
wells.
$30/LF + dewatering
$75/LF + dewatering
Partially laid back trench with
trench box and dewatering wells.
Solid shoring and dewatering
wells.
$60/LF + dewatering
$110/LF + dewatering
Partially laid back trench with
trench box and dewatering wells.
Solid shoring and dewatering wells
(no additional cost)
Baseline
(no additional cost)
Baseline
(no additional cost)
Baseline
(no additional cost)
$90/LF + dewatering
Partially laid back trench with
trench box and dewatering wells.
3.2.3 Ground Condition
Large portions of Sacramento County have a significant amount of cobbles in the soil. These cobbles, which
originated from the Sierra Nevada Mountains and were carried and deposited in the Sacramento area by the
American River, are rounded and very hard. For this reason, the cobbles can be problematic when constructing a
pipeline. Therefore a cobble construction factor will be added to the portions of the projects in extra processing
of excavated material necessary to produce acceptable backfill, and shoring difficulties. For projects that will be
constructed before the road and utility improvement are built, the challenges are not as great as the projects
that are built after the road and utility improvements have been constructed. For this System Capacity Plan, the
cobble construction factor will be applied within the areas shown in Figure 3. Cobble issues reduce in magnitude
from the northeast to southwest in this area. For this reason, projects located on Gerber Road will have zero
cobble factor and projects located on Florin Road will have 50% cobble factor instead of the 100% cobble factor.
In the northeast corner of the SASD service area, there is hard rock located in the trench zone. This hard rock
significantly reduces construction productivity and adds considerable cost to pipeline projects. For this System
Capacity Plan, the hard rock construction factor will be applied to all projects located in the areas shown in
Figure 3.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 10 of 18
January 12, 2012
DRAFT
Figure 3 – Hard Rock and Cobble Construction Factor Areas
Technical Memorandum #7
For the System Capacity Plan, use the following as construction factors:
Cobble Construction Factor:
Developed Areas: 100% of Baseline Pipe Construction Costs
Undeveloped Areas: 20% of Baseline Pipe Construction Costs
Note: Areas within the cobble area but south of Elder Creek Road, reduce the cobble construction factor
by 50%.
Hard Rock Construction Factor:
100% of Baseline Pipe Construction Costs
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 11 of 18
January 12, 2012
DRAFT
3.3 Traffic Control
Technical Memorandum #7
Minor traffic control consisting of two-way flagging, construction area signs, traffic cones, and channelizers are
included in the pipe installation cost. For roads identified as having 4 or more lanes, additional traffic control will
be needed. Additional traffic control includes the cost of traffic design and use of flagging, construction area
traffic signs, temporary crash cushions, barricades, channelizes, flashing beacons, K-rails, and changeable
message boards. Traffic control on major roads could range $3000 to $6000 per day. If it is assumed that
construction will proceed at a rate of 100 feet/day, the equivalent cost would be $30 to $60 per foot. For this
System Capacity Plan, the following unit cost will be used:
Increased Traffic Control: $45 per linear foot of alignment located in major roads (4 or more lanes).
3.4 Productivity Factors
3.4.1 Traffic/Utility Corridor Delay Factor
Constructing a pipeline in a busy road or a road with numerous utilities is slower (and therefore more costly)
than constructing a pipeline in a quiet residential or rural street. Often times, there are restricted work areas
and hours to maintain safe traffic flow, driveway access coordination, and utility conflicts. Therefore a congested
traffic/utility corridor delay factor reflecting the loss of productivity will be added to alignments on roads with 4
or more lanes.
Congested Traffic/Utility Corridor Delay Factor: 15% of baseline pipe construction costs in major roads
(4 or more lanes).
3.4.2 Remove and Replace Delay Factor
Constructing a new pipeline in an alignment that requires the removal of the existing gravity sewer is more
costly than constructing a pipeline in a new alignment. The additional cost is caused by the necessary bypass
pumping and the extra processing of the excavated material to remove the broken pipe from the backfill
material. However, contractors are very creative and could typically avoid completely removing the pipe or
remove it at a lower cost than traditional means. For those reasons, the remove and replace delay factor will be
the following:
Remove and Replace Delay Factor: 25% of baseline pipe construction costs.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 12 of 18
January 12, 2012
DRAFT
3.5 Surface Restoration
Technical Memorandum #7
Surface restoration includes replacement of pavement for pipeline alignments in paved roadways and
replacement of landscaping or other vegetation for pipelines constructed in easements or across open land.
3.5.1 Pavement Restoration
To ensure that the pipe trench does not affect the integrity of the road, restoration will be made to the road
structural section above the pipe trench and overlayed. A tee trench will include a 6-inch thick asphalt concrete
pavement over 6-inches of 3/4 –inch aggregate base compacted to 95 percent. The asphalt concrete section will
extend beyond the trench walls by 12 inches. On both sides of the 6-inch thick pavement, a strip of 2-inch deep
grinding and new pavement overlay the road. The grinding and pavement will extend to lip of gutter, lane line,
or center of traffic lane.
To determine the cost of pavement restoration , two factors must be determined: width and unit cost, While the
width of pavement restoration does vary with pipe diameter, the width is more strongly influenced by factors
such as proximity to edge of pavement, raveling of trench wall, and strength of existing pavement. These factors
are hard to determine during the planning stage; therefore, for the System Capacity Plan, a pavement
restoration width of 15 feet (12 foot traffic lane with a 3 foot shoulder) and a pipe trench accommodating an 18inch pipe (42-inch wide trench), will be used.
For the purposes of this Master Plan, an average cost over the entire 15 foot width will be used, as follows:
Pavement Restoration Cost (15 feet width): $100 per linear foot
3.5.2 Other Restoration
All trunk sewers and constructed outside of paved roadways and temporary lay down areas, if not constructed
by a developer as part of a subdivision, will require either revegetation or landscape restoration. Open cut creek
crossings will require creek restoration. Revegetation, also referred to hydroseeding, is used to restore pipeline
routes located in open fields. Landscape restoration is used when the alignment is located in the landscaped
medians or other landscaped areas. For new subdivisions, pipelines are usually constructed prior to constructing
the subdivision. For this reason revegetation and landscape restoration cost will be included as part of a new
subdivision cost and not part of the capital funding projection.
Where required, both landscape restoration and revegetation will be applied to the entire area disturbed by the
construction operation. Typically, the disturbed area is larger when the alignment goes through an open field
than when the alignment goes through a creek or an area with landscape improvements. For this reason, for this
System Capacity Plan, the revegetation width will be assume to be 80 feet, and the creek and landscape
restoration widths will be 40 feet. The following costs shall be used:
Landscape Restoration (replanting in medians or landscaped areas, 40 feet wide): $4.00 per square
foot
Revegetation (hydroseeding in open areas, 80 feet wide): $0.25 per square foot
Creek Restorations (replanting, minor bank erosion control, 40 feet wide): $12.00 per square foot
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 13 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
3.6 Sewer Structures
3.6.1 Junction Structures
Junction structures are use to combine flows coming from different pipes into one out flowing pipe. They are
required at the connection points of trunk sewers to interceptors. If the trunk sewer is being connected to an
existing or previously constructed interceptor, then the cost for this junction structure will be included in the
trunk sewer cost estimate. If the junction structure is constructed at the time of the interceptor construction,
then it will be assumed to be included in the interceptor cost estimate and not included in the SASD trunk sewer
construction cost.
Transition structures and turning structures are similar to junction structures in construction methods and cost
but differ in not combining flows. For this System Capacity Plan, transition and turning structures will be costed
like junction structures using Table 9.
Table 9 – Junction Structure Cost
Junction Structure
Cost
Trunk Sewer Junction Structure
Less than 24-inch Diameter Outlet Pipe
$25,000
24 to 36-inch Diameter Outlet Pipe
$50,000
Interceptor/Trunk Junction Structure
60-inch or less diameter Interceptor
$165,000
72 to 78-inch Diameter Interceptor
$230,000
84 to 144-inch Diameter Interceptor
$850,000
3.6.2 Pump Stations
Pump stations are used to convey wastewater using pressurized pipelines. Costs can vary greatly depending on
how much wastewater is being conveyed an on how far the wastewater will be pumped. Typically pump stations
of the same firm capacity used to raise the hydraulic grade line (lift stations) require smaller pumps and
appurtenances than pump stations used to convey wastewater from one location to another and are therefore
less costly. The total dynamic head of pump station is a factor for determining the pump size, motor control
center size, switch board size, wet well size, as well as other appurtenances. For those reasons, the pump
stations cost shown in Table 10 are base on three different scenarios representing low, medium, and high head
pump stations.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 14 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
Table 10 – Pump Station Cost
Pump Station
Firm Capacity
Pump Station Cost Based on Total Dynamic Head
Low Head
Less than 60 feet
Medium Head
60 to 120 feet
High Head
Greater than 120 feet
Less than 1 MGD
$560,000
$680,000
$850,000
1 MGD to 2 MGD
$810,000
$980,000
$1,200,000
2 MGD to 3 MGD
$1,200,000
$1,400,000
$1,800,000
3 MGD to 4 MGD
$1,700,000
$2,000,000
$2,400,000
4 MGD to 5 MGD
$2,100,000
$2,400,000
$2,900,000
5 MGD to 6 MGD
$2,700,000
$3,000,000
$3,700,000
6 MGD to 7 MGD
$3,100,000
$3,500,000
$4,200,000
7 MGD to 8 MGD
$3,800,000
$4,300,000
$5,100,000
8 MGD to 9 MGD
$4,200,000
$4,700,000
$5,600,000
9 MGD to 10 MGD
$4,700,000
$5,100,000
$6,100,000
Often times, pump stations are upgraded to increase the pumping and storing capacity. For increasing the
capacity of an existing station, use the following cost factors:
Table 11 – Rehab Pump Station Cost Factor
Pump Station Capacity Increase
Percentage Cost of New Capacity
Pump Station
Less than 0.5 MGD
25%
0.5 to 2 MGD
50%
2 MGD to 4 MGD
75%
Greater than 4 MGD
100%
3.7 Mobilization and Demobilization
These costs usually generally cover contractor activities when the contractor initially moves construction
facilities and equipment to the project site and at the end of the project when removing facilities and equipment
from the site. These costs also include temporary construction needed to begin the project (access roads,
power, internet, etc.). Typically language in SASD construction contracts limit mobilization and demobilization
bid cost to approximately 5 percent to prevent spending an unreasonably large portion of the construction cost
prior to construction.
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 15 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
Mobilization/Demobilization: 5% of the Construction Cost Subtotal
3.8 Contingencies
This contingency is used to adjust the Estimated Construction Cost Subtotal such that the total cost will account
for unforeseen economic variables that are difficult to quantify or cover portions of work that were not
estimated. The percentage used for an overall project will vary depending upon level of effort at various stages
of the project. The percentage used is adjusted based upon detailed or lack of detailed geotechnical, utility, and
other project details and information. Due to a lack of detailed information during the planning phase, a
contingency factor of 30 percent is considered appropriate for planning level costs.
Contingencies for Unknown Conditions: 30% of the Estimated Construction Cost Subtotal.
3.9 Easement Acquisition
The acquisition of easements can vary in cost depending on the incidentals (title reports, appraisals, etc.) and
cooperation of the property owners. On average, the cost of acquiring an easement is $7000 per parcel and do
not include the price of the easement. Because higher cost construction projects do not necessarily yield
proportionally higher costs easements and real estate acquisitions, these costs are separately calculated and
excluded from the typical 25% markup for engineering, administration, and legal costs.
Land acquisition is required for any construction area or pipeline located outside of the public right-of-way.
However, if the alignment of the trunk sewer is within a new development being constructed, it is assumed that
the easement will be granted to SASD as a condition of the development. Therefore no easement acquisition
costs will be incurred by SASD.
Easements can vary in cost. SASD usually acquires permanent easements at 50 percent of the land’s fee value as
determined by an independent appraiser. Temporary easements are acquired at 10 percent of the appraised fee
value for a 12-month usage period. Because of unexpected delays to project schedules, temporary easements
are typically obtained six months beyond the need of the easement or a minimum of two years, whichever is
greater. To ensure that property owners work with SASD, the minimum price for a temporary construction
easement and a permanent easement is $500 and $1,000, respectively. Based on Sacramento County Assessor’s
data for 2010, undeveloped land values can greatly depending on the location of property but, averages around
$8 per square foot. Being a planning level document and real estate typically representing a small percentage of
the project cost, it is appropriate at this level to not distinguish between uses of land and to apply the following
costs:
SASD Acquisition Cost : $7,000 per parcel
Easements in a Newly Constructed Development: No cost to SASD
Temporary Construction Easement (80 feet width) : $0.80 per square foot per year
Permanent Easement (20 feet wide for pipelines, 120 x 120 feet for pump station): $4.00 per square
foot
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 16 of 18
January 12, 2012
DRAFT
3.10 Engineering, Administration, and Legal Costs
Technical Memorandum #7
Typically, a markup is applied to the Estimated Construction Cost to account for the various costs in bringing a
planning level concept through design, construction, and closeout. The engineering, administration, and legal
cost item will account for all reasonably anticipated cost items for both the design and a construction phase,
assumed:
Engineering, Administration, and Legal Costs: 25% of the Total Estimated Construction Cost
This cost item includes and excludes the following:
Include:
Project Development Plan 1 & 2
SASD Design/Project Management
Flow Monitoring and Capacity Analysis
Consultant Design
Environmental Clearance (Mitigated Negative Declaration)
Permitting
Typical Public Outreach
Construction Inspection
Construction Survey
Construction Costs
Administration Costs
Legal Costs
Does not include:
Program Cost associated with implementing District’s Capital Improvement and Trunk Expansion
Programs
Easements nor Real Estate Acquisitions
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 17 of 18
January 12, 2012
Technical Memorandum #7
DRAFT
4. REFERENCES
Tabula Version 3.1.2 King County, Washington, November 10, 2010
CSD-1 Master Plan 2000, Technical Memorandum No. 8B, August 1, 2000
CSD-1 Master Plan 2006, Master Plan TM No. 8B - Cost Research Results, February 23, 2006
SASD Standards and Specifications, June 22, 2011, Version 1.0
County of Sacramento Construction Standard Specification, January 2008
SASD New Construction Bid Summary 2000 to 2010
2010 RSMeans Heavy Construction Cost Data, 24th Annual Edition
Ebidboard.com for public agency construction bids from 2008 to 2010
Engineering News-Record, Construction Cost Index
SASD Sewer Ordinance, April 8, 2011.
Sacramento County Assessor’s Office Commercial and Land Sales for 2010
Interceptor Sequencing Study
2010 SCP Tech Memo - 7 Cost
- Final.Docx
Page 18 of 18
January 12, 2012
COST APPENDIX
ENR CONSTRUCTION COST INDEX
Assumption:
‐ Adjust cost to January 2011 dollars using Engineering News Record Construction Cost Index (ENR CCI)
‐ Out of the 20 cities ENR produces cost indices for, San Francisco is the city closest to Sacramento.
However, Sacramento costs are typically lower thank San Francisco's cost. Therefore to determine the
ENR CCI for Sacramento, take the average ENR CCI of San Francisco and the 20 cities average.
January 2011 ENR CCI = average of San Francisco ENR CCI (10116) and 20 Cities ENR CCI (8938)
= 9827
Year
2010
2009
2008
2007
2006
2005
2004
San Fancisco CCI
9896
9738
9363
9096
8618
8309
8228
20 Cities Average CCI
8802
8570
8310
7966
7751
7446
7115
Average CCI
9350
9150
8840
8530
8180
7880
7670
2011 Cost Mark Up Factor
1.02
1.04
1.08
1.12
1.16
1.21
1.24
GRAVITY PIPELINE COST
Costing Range
Year Description
Project
2010
Lower Silver Creek Flood Protection
and Creek Restoration Project
6‐inch VCP Interstate 680 to Moss Point Drive
(Reaches 4,5, & 6A)
8‐inch VCP NVS Phase A1 Infrastructure
8
inch VCP Laguna Ridge (North Shed C)
8‐inch VCP
Gravity Sewer Installation and Sewer
Lift Station Demolition at Oceanhill
8‐inch VCP Lane from Oceanhill Lane to Beach
Boulevard at Adams Avenue
8‐inch VCP
Castro Valley Sanitary Trunk Sewer
Project
Elk Grove ‐ Major Roads
Elk Grove ‐ Major Roads
Laguna Ridge ‐ Whitelock Parkway
Segment 1
Laguna Ridge ‐ Whitelock Parkway
Segment 2
NVS Phase A1 Infrastructure
Lower Silver Creek Flood Protection
and Creek Restoration Project
Interstate 680 to Moss Point Drive
(Reaches 4,5, & 6A)
Franklin Crossing Major Roads Phase 1
Laguna Ridge Bruceville Road Phase II
Olive Avenue Sewer Trunk Extension
2006 15‐inch VCP Bruceville Road Segment A
2005 15‐inch VCP Laguna Ridge (North Shed C)
Weighted
150% Average
Adjusted 2011
Cost (ENR CCI
9527)
Construction Bid
Jurisdiction
Length
Unit
Median
Santa Clara Valley
Water District
405
LF
$145
$73
$218
$158
$162
$145
$130
$200
City of Elk Grove
636
LF
$69
$34
$103
$65
$66
$58
$70
$67
City of Elk Grove
50%
$112
124
LF
$160
$80
$240
$155
$174
$150
$116
$375
$194
$160
1890
LF
$125
$63
$188
$126
$146
$125
$225
$125
$110
$145
City of Elk Grove
254
LF
$166
$83
$249
$166
$193
$166
City of Elk Grove
1787
LF
$145
$73
$218
$145
$168
$145
County of Sacramento
274
LF
$275
$138
$413
$306
$354
$275
$336
$93
Sacramento
Sacramento
192
1730
LF
LF
$290
$135
$145
$68
$435
$203
$247
$130
$287
$157
$150
$84
$302
$130
$290
$165
$140
City of Huntington
Beach
335
LF
$210
$105
$315
$206
$210
$175
$210
$120
$310
$215
County of Alameda
254
LF
$200
$100
$300
$187
$191
$130
$140
$260
$131
$208 $200 $240
City of Elk Grove
City of Elk Grove
5726
1021
LF
LF
$50
$62
$25
$31
$75
$93
$50
$65
$56
$73
$48
$55
$46
$52
$50
$54
$57
$62
$48
$54
City of Elk Grove
835
LF
$195
$98
$293
$195
$226
$195
City of Elk Grove
1584
LF
$170
$85
$255
$170
$197
$170
Sacramento
269
LF
$250
$125
$375
$249
$289
$166
$331
$250
Santa Clara Valley
Water District
290
LF
$180
$90
$270
$193
$197
$150
$180
$250
City of Elk Grove
1143
LF
$91
$46
$137
$87
$89
$75
$92
$90
City of Elk Grove
1254
LF
$96
$48
$144
$95
$103
$145
$94
$96
County of Sacramento
521
LF
$190
$95
$285
$168
$194
$190
$190
$123
City of Elk Grove
Sacramento
649
557
LF
LF
$170
$165
$85
$83
$255
$248
$170
$156
$197
$189
$170
$115
$170
$180
$92
$160
$48 $109 $86
$91 $106 $93
$55
$63
Costing Range
Year Description
2006 15‐inch VCP
Project
Aerojet Interceptor 1B
Jurisdiction
Length
Unit
Median
50%
Weighted
150% Average
Adjusted 2011
Cost (ENR CCI
9527)
Construction Bid
County of Sacramento
106
LF
$358
$179
$536
$346
$402
$255
$330
$415
$385
2005 18‐inch VCP Laguna Ridge (North Shed C)
Sacramento
Castro Valley Sanitary Trunk Sewer
2010 18‐inch VCP
County of Alameda
Project
2009 18‐inch VCP Lake Murray Trunk Sewer
City of San Diego
Magnolia‐Fillmore‐Golden Sewer From
2010 18‐inch VCP
City of Riverside
SR‐91 to Cochran Avenue
Magnolia‐Fillmore‐Golden Sewer From
City of Riverside
2010 18‐inch VCP
SR‐91 to Cochran Avenue
2005 21‐inch VCP Laguna Ridge (North Shed C)
Sacramento
2005 24‐inch VCP Laguna Ridge (North Shed C)
Sacramento
Natomas Phase 1
2005 24‐inch VCP
County of Sacramento
4048
LF
$193
$96
$289
$190
$229
$138
$195
$190
$235
2005 24‐inch VCP
Natomas Phase 2
Castro Valley Sanitary Trunk Sewer
Project
Castro Valley Sanitary Trunk Sewer
2010 24‐inch VCP
Project
2009 24‐inch VCP Lake Murray Trunk Sewer
2005 27‐inch VCP Laguna Ridge (North Shed C)
Aerojet Interceptor 1B
2006 27‐inch VCP
2010 24‐inch VCP
2006 27‐inch VCP NVS Phase A1 Infrastructure
2009 27‐inch VCP Lake Murray Trunk Sewer
2005 30‐inch VCP Laguna Ridge (North Shed C)
Sacramento Housing and
2006 30‐inch VCP
Redevelopment Agency
Sacramento Housing and
2006 30‐inch VCP
Redevelopment Agency
Sacramento Housing and
2006 30‐inch VCP
Redevelopment Agency
2006 30‐inch VCP NVS Phase A1 Infrastructure
Aerojet Interceptor 1B
2006 36‐inch VCP
2691
LF
$200
$100
$300
$212
$216
$200
$180
$200
$252
$188 $250 $214
2549
LF
$147
$74
$221
$132
$138
$92
$120
$160
$150
$92
1340
LF
$175
$88
$263
$164
$167
$121
$140
$150
$183
$120 $185 $175 $195 $205
2075
LF
$185
$93
$278
$184
$188
$134
$162
$185
$173
$175 $199 $225 $195 $208
1191
4631
LF
LF
$225
$279
$113
$139
$338
$418
$225
$263
$273
$318
$181
$209
$250
$286
$200
$277
$270
$280
2904
LF
$391
$196
$587
$393
$476
$391
$348
$440
County of Sacramento
1058
LF
$600
$300
$900
$526
$636
$451 $1,100
$600
County of Alameda
1161
LF
$300
$150
$450
$299
$305
$320
$260
$240
$389
$253 $300 $330
County of Alameda
2265
LF
$251
$126
$377
$267
$272
$250
$260
$250
$263
$251 $350 $245
City of San Diego
Sacramento
1163
1130
LF
LF
$200
$343
$100
$171
$300
$514
$197
$320
$204
$387
$167
$224
$200
$335
$190
$350
$225
$370
$150 $155 $163 $200 $275 $241 $417
County of Sacramento
201
LF
$438
$219
$656
$428
$496
$425
$375
$450
$460
Sacramento
City of San Diego
Sacramento
1929
3668
222
LF
LF
LF
$290
$247
$410
$145
$124
$205
$435
$371
$615
$292
$234
$390
$338
$244
$472
$303
$152
$229
$282
$250
$450
$290
$205
$370
$240
$510
$247 $210 $184 $270 $270 $317 $405
2940
LF
$705
$353 $1,058
$693
$804
$720
$640
$535
$705
$867
910
LF
$500
$250
$750
$465
$540
$830
$500
$456
$440
$867
705
LF
$565
$283
$848
$493
$571
$930
$565
$473
$440
$867
Sacramento
6123
LF
$325
$163
$488
$353
$410
$425
$325
$310
County of Sacramento
2677
LF
$453
$226
$679
$483
$560
$415
$400
$490
$625
$95 $134 $225 $170 $147 $163
Pipe Cost vs Pipe Diameter
$1,000
Pipe Cost
$800
$600
$400
Series1
$200
Linear (Series1)
$0
0
5
10
15
20
25
30
35
40
y = 14.45x + 25.07
R² = 0.538
Pipe Diameter (in)
MANHOLE COST PER LINEAR FOOT
Manholes
48‐inch Manhole < 16 feet deep Pipe 8‐21
48‐inch Manhole > 16 feet deep Pipe 12‐21
60‐inch Manhole < 16 feet deep Pipe 24<
60‐inch Manhole > 16 feet deep Pipe 24<
72‐inch Manhole > 16 feet deep
FORCE MAIN COST
Assumption:
‐ Force mains to be in depth range of 4 to 16 feet. Force mains located deeper than 16 feet, use unit cost for gravity pipe.
‐ Force main to be ductile iron pipe.
‐ Air release valves and manhole vault to be installed every 3000 feet (included in unit price for force main).
Description
Pavement
Removal/Temporary
Replacement
CY
$/CY
Trench
Excavation
Dewatering
ARV Installation
and Manhole
Pipe and
Installation
Pipe Bedding
Intermediate
Backfill &
Compaction
CY
$/CY
Backfill &
Compaction
Hauling of
Cost Per
Excess Native Total Cost Linear Use
Material
Foot
LS
$/LS
$/LF
$
$/LF
CY
$/CY
CY
$/CY
LF
$/LF
LF
$/LF
CY
$/CY
CY
$/CY
4" DIP less than 10 feet deep
500
$4.00
1222
$28.70
444
$15.00
1000
$4.00
1000
$36.41
110
$45.00
170
$28.70
942
$45.00
367
$12.00
$140,783
$141
4" DIP 10 to 16 feet deep
500
$4.00
1889
$28.70
1111
$15.00
1000
$4.00
1000
$36.41
110
$45.00
170
$28.70
1609
$45.00
567
$8.00
$200,050
$200
$200
6" DIP less than 10 feet deep
500
$4.00
1222
$28.70
444
$15.00
1000
$4.00
1000
$42.24
110
$45.00
170
$28.70
942
$45.00
367
$12.00
$146,613
$147
$150
6" DIP 10 to 16 feet deep
500
$4.00
1889
$28.70
1111
$15.00
1000
$4.00
1000
$42.24
110
$45.00
170
$28.70
1609
$45.00
567
$8.00
$205,880
$206
$205
8" DIP less than 10 feet deep
500
$4.00
1222
$28.70
444
$15.00
1000
$4.00
1000
$46.20
110
$45.00
170
$28.70
942
$45.00
367
$12.00
$150,573
$151
$160
8" DIP 10 to 16 feet deep
500
$4.00
1889
$28.70
1111
$15.00
1000
$4.00
1000
$46.20
110
$45.00
170
$28.70
1609
$45.00
567
$8.00
$209,840
$210
$210
10" DIP less than 10 feet deep
500
$4.00
1222
$28.70
444
$15.00
1000
$4.00
1000
$62.70
110
$45.00
170
$28.70
942
$45.00
367
$12.00
$167,073
$167
$170
10" DIP 10 to 16 feet deep
500
$4.00
1889
$28.70
1111
$15.00
1000
$4.00
1000
$62.70
110
$45.00
170
$28.70
1609
$45.00
567
$8.00
$226,340
$226
$225
12" DIP less than 10 feet deep
500
$4.00
1222
$28.70
444
$15.00
1000
$4.00
1000
$78.10
110
$45.00
170
$28.70
942
$45.00
367
$12.00
$182,473
$182
$180
12" DIP 10 to 16 feet deep
667
$4.00
1889
$28.70
1111
$15.00
1000
$4.00
1000
$78.10
110
$45.00
170
$28.70
1609
$45.00
567
$8.00
$242,407
$242
$240
15" DIP less than 10 feet deep
667
$4.00
1630
$28.70
593
$15.00
1000
$4.00
1000
$107.80
150
$45.00
220
$28.70
1260
$45.00
489
$12.00
$245,740
$246
$245
15" DIP 10 to 16 feet deep
667
$4.00
2519
$28.70
1481
$15.00
1000
$4.00
1000
$107.80
150
$45.00
220
$28.70
2149
$45.00
756
$8.00
$324,762
$325
$325
18" DIP less than 10 feet deep
667
$4.00
1630
$28.70
593
$15.00
1000
$4.00
1000
$138.38
150
$45.00
220
$28.70
1260
$45.00
489
$12.00
$276,315
$276
$275
18" DIP 10 to 16 feet deep
667
$4.00
2519
$28.70
1481
$15.00
1000
$4.00
1000
$138.38
150
$45.00
220
$28.70
2149
$45.00
756
$8.00
$355,337
$355
$355
21" DIP less than 10 feet deep
667
$4.00
1630
$28.70
593
$15.00
1000
$4.00
1000
$163.13
150
$45.00
220
$28.70
1260
$45.00
489
$12.00
$301,065
$301
$300
21" DIP 10 to 16 feet deep
667
$4.00
2519
$28.70
1481
$15.00
1000
$4.00
1000
$163.13
150
$45.00
220
$28.70
2149
$45.00
756
$8.00
$380,087
$380
$380
24" DIP less than 10 feet deep
667
$4.00
1630
$28.70
593
$15.00
1000
$4.00
1000
$214.88
150
$45.00
220
$28.70
1260
$45.00
489
$12.00
$352,815
$353
$355
24" DIP 10 to 16 feet deep
667
$4.00
2519
$28.70
1481
$15.00
1000
$4.00
1000
$214.88
150
$45.00
220
$28.70
2149
$45.00
756
$8.00
$431,837
$432
$430
Use these cost for force mains
Force Main Diameter (in)
4
6
8
10
12
15
18
21
24
Less than 10 Feet
Deep
Cost ($/lf)
140
150
160
170
180
245
275
300
355
10 to 16 Feet
Deep
Cost ($/lf)
200
205
210
225
240
325
355
380
430
Force main
60‐inch Manhole < 16 feet deep
Air Release Valve ‐ ARI Nylon D‐20
Cost per LF Based on Spacing of 3,000 feet
Cost
$8,000
$2,500
$4
$140
BORE AND JACK COST
Assumptions:
‐ Bore and jack unit cost include mobilization and demobilization cost and carrier pipe and
installation cost.
‐ Bore and jack unit cost does not include jacking and receiving pit cost.
Pipe and
Total Bore and Use this for Bore and
Installation
Jack Cost
Jack Unit Cost
Cost
($/lf)
($/lf)
($/lf)
$40.50
$616
$615
$51.50
$627
$625
$56.00
$631
$630
$78.00
$653
$655
$42.50
$668
$670
$46.50
$722
$720
$58.00
$793
$795
$79.00
$844
$845
$87.50
$888
$890
$100.25
$945
$945
$113.00
$1,038
$1,040
$124.00
$1,104
$1,105
$135.00
$1,165
$1,165
MICROTUNNELING COST
Assumptions:
‐ Average production rate is 32 to 60 feet per day.
‐ Unit price of microtunnel includes the cost of bore and carrier pipe. Mobilization and demobilization is separate.
‐ Smaller pipelines (15‐inch diameter or smaller) will be using microtunneling for force mains, pipe material will be
ductile iron.
‐ Larger pipeline (18‐inch diameter or greater) will be using microtunneling for trunk sewers, pipe material will be
reinforced concrete.
‐ Jacking and receiving pits will be separate items and are not included in the unit cost of pipe ramming.
MOBILIZATION AND DEMOBILIZATION
Typical mobilization cost approximately $44,000 per day.
Bore Hole Diameter
Mobilization/
Demobilization ($/Day)
Traveling
Days
Mobilization/Demobilization Cost
(Job)
Less than 24‐inch
24 to 48‐inch
Greater than 48‐inch
PIPE RAMMING COST
Assumptions:
‐ Pipe ramming is most useful in short drives and shallow applications.
‐ Mobilization and demobilization cost will be included in the unit price of pipe ramming.
‐ Pipe installation cost will also be include in the price of pipe ramming.
‐ Due to the lack of available cost information on pipe ramming, unit price cost for pipe ramming will be
obtained from ENR CCI adjustments from Master Plan 2000.
‐ Casing to accommodate carrier pipe bell plus 12 inches.
‐ Smaller pipelines (15‐inch diameter or smaller) will be using pipe ramming for force mains, pipe material will
be ductile iron.
‐ Larger pipelines (18‐inch diameter or greater) will be using pipe ramming for trunk sewers, pipe material
will be reinforced concrete.
‐ Jacking and receiving pits will be separate items and are not included in the unit cost for pipe ramming
Use this for
Pipe
Ramming
Cost ($/lf)
$305
$345
$380
$460
$505
$510
$545
$615
$660
$720
$820
$890
$960
ADDITIONAL SHEETING AND SHORING COST
Assumption:
‐ There is limited information on project cost for sheeting and shoring. Projects are typically bid on a lump sum basis and therefore making it
difficult to determine actual sheeting and shoring cost.
‐ Adjust unit pricing from SASD Master Plan 2000 based on ENR CCI.
Master Plan 2000 (ENR CCI 6474)
Unit Cost Adjustment (ENR CCI 9827)
Use these Unit Cost for System Capacity Plan
High
High
High
High
High
High
Groundwater Groundwater
No
Groundwater Groundwater
No
No
Groundwater Groundwater
Depth (ft)
Groundwater Undeveloped Developed Groundwater Undeveloped Developed Groundwater Undeveloped Developed
Area (LF)
Area (LF)
Area (LF)
Area (LF)
Area (LF)
Area (LF)
Baseline
20
50
Baseline
$29
$74
Baseline
$30
$75
8 to 16
Baseline
40
75
Baseline
$59
$110
Baseline
$60
$110
16 to 20
Baseline
60
90
Baseline
$88
$132
Baseline
$90
$135
20 to 24
Baseline
80
480
Baseline
$118
$706
Baseline
$120
$710
24 to 28
Check Sheet Piles at 24 to 28 feet
Pipe depth at 26 feet, excavation depth at 27 feet
Sheet Piles 25' deep excavation range
drive, extract, and salvage
Sheet Piles =
=$26.50 sf
$715.50 compared to $710/lf
okay
ADDITIONAL TRAFFIC CONTROL COST
Assumptions:
‐ Minor traffic control consisting of two‐way flagging, construction area signs, traffic cones, and
channelizers are included in the pipe installation cost.
‐ Additional traffic control to be used on major roads. Major roads have 4 or more lanes.
‐ Because traffic control is usually bid as a lump sum item, it is difficult to determine traffic control
costs from previous project bids. Therefore traffic control cost are obtained from catalogued unit
items.
Typical cost for 2000 feet of pipeline installation on major road
Description
Traffic Control Design
K‐Type Rail
Portable Changeable Message
Channelizer/Crash barrels
Santa Clara
Lower Silver Creek Flood Protection
Valley Water
and Creek Restoration Project
District
Santa Clara
Lower Silver Creek Flood Protection
Valley Water
and Creek Restoration Project
District
Santa Clara
Lower Silver Creek Flood Protection
Valley Water
and Creek Restoration Project
District
Santa Clara
Lower Silver Creek Flood Protection
Valley Water
and Creek Restoration Project
District
County of
Metro Air Park Gravity Connector
Sacramento
County of
Metro Air Park Force Main
Sacramento
Quantity Unit
Median
50%
150%
Adjusted to 2011
Weighted
Cost (ENR 9527)
Average
($/SF)
PUMP STATION COST (1 MGD to 10 MGD)
Assumption:
‐ Minimum forcemain velocity is 3 feet per second. Maximum forcemain velocity is 8 feet per second.
‐ Maximum discharge pressure is 80 psi.
Pump
Station
‐ Based on the table above, TDH ranges for low, medium, and high pump stations are
Low head pump station
= less than 60 TDH
Medium head pump station
= 60 to 120 THD
High head pump station
=120 or greater pump station
‐ Use Tabula 3.1.2 to calculate pump station cost
‐ Use TDH of 50 feet, 100 feet, 180 feet to represent low, medium, and high head
Pump Station Cost Using Tabula 3.1.2
50 feet TDH (ENR CCI 8815)
PS Firm
Capacity
<1 MGD
1 to 2 MGD
2 to 3 MGD
3 to 4 MGD
4 to 5 MGD
5 to 6 MGD
6 to 7 MGD
7 to 8 MGD
8 to 9 MGD
9 to 10 MGD
Average PS Adjusted PS Cost Use these Low
Cost Low (ENR CCI 9527)
Head Pump
40 feet
45 feet
Head
Low Head
Station Values
$430,000
$557,678
$560,000*
$745,000
$805,175
$810,000
$1,105,000
$1,194,252
$1,200,000
$1,580,000
$1,707,619
$1,700,000
$1,900,000
$2,053,466
$2,100,000
$2,620,000
$2,485,000
$2,685,717
$2,700,000
$3,000,000
$2,840,000
$3,069,391
$3,100,000
$3,360,000 $3,720,000 $3,540,000
$3,825,931
$3,800,000
$3,720,000 $4,130,000 $3,925,000
$4,242,028
$4,200,000
$4,080,000 $4,530,000 $4,305,000
$4,700,000
$4,652,721
*Add 20% markup to account for variability in small pump stations
100 feet TDH (ENR CCI 8815)
PS Firm
Capacity
<1 MGD
1 to 2 MGD
2 to 3 MGD
3 to 4 MGD
4 to 5 MGD
5 to 6 MGD
6 to 7 MGD
7 to 8 MGD
8 to 9 MGD
9 to 10 MGD
Average PS Adjusted PS Cost Use these
Cost
(ENR CCI 9527) Medium Head
40 feet
45 feet
Medium
Medium Head Pump Station
$522,000
$676,995
$680,000*
$904,000
$977,017
$980,000
$1,315,000
$1,421,214
$1,400,000
$1,830,000
$1,977,812
$2,000,000
$2,195,000
$2,372,293
$2,400,000
$2,950,000
$2,815,000
$3,000,000
$3,042,372
$3,360,000
$3,200,000
$3,500,000
$3,458,469
$3,760,000 $4,120,000 $3,940,000
$4,300,000
$4,258,239
$4,150,000 $4,560,000 $4,355,000
$4,706,760
$4,700,000
$4,540,000 $4,990,000 $4,765,000
$5,149,876
$5,100,000
*Add 20% markup to account for variability in small pump stations
180 feet TDH (ENR CCI 8815)
PS Firm
Capacity
<1 MGD
1 to 2 MGD
2 to 3 MGD
3 to 4 MGD
4 to 5 MGD
5 to 6 MGD
6 to 7 MGD
7 to 8 MGD
8 to 9 MGD
9 to 10 MGD
*Add 20% markup to account for variability in small pump stations
Average PS Adjusted PS Cost Use these High
Cost High (ENR CCI 9527)
Head Pump
40 feet
45 feet
Head
High Head
Station Values
$653,000
$846,892
$850,000*
$1,135,000
$1,226,676
$1,200,000
$1,640,000
$1,772,465
$1,800,000
$2,420,928
$2,240,000
$2,400,000
$2,695,000
$2,912,679
$2,900,000
$3,530,000
$3,395,000
$3,669,219
$3,700,000
$4,020,000
$3,860,000
$4,171,778
$4,200,000
$5,058,010
$5,100,000
$4,500,000 $4,860,000 $4,680,000
$4,970,000 $5,380,000 $5,175,000
$5,592,992
$5,600,000
$5,440,000 $5,890,000 $5,665,000
$6,122,570
$6,100,000
Check Pump Station ‐ 1 mgd Low Head
DESCRIPTION
Mobilization
Clearing and Grubbing
Grading, Excavation, Site Preparation
Dewatering
Aggregate Base for PS Pad (120' x 120')
Asphalt for PS Pad (120' x 120')
Chain link fence
20' Chain link Swing Gate
5' Chain link Man Entry Gate
Wash Pad
Electrical Panel Canopy
Bypassing
Sewer Gravity Pipe (8‐inch diameter)
Discharge Manhole (MH + PVC Lining)
Wet Well
Valve Vault and Bypass Vault
Electrical, Lighting, and Instrumentation
Site Piping
Pump 20 Hp
Start Up and Testing
Generator
Odor Control
S132 ‐ Chrysanthy Pump Station
S129 ‐ Fruitridge Center Pump Station
S144 ‐ Wilson Road Pump Station
S145 ‐ Lambert Road Pump Station
S142 ‐ Elk Grove Promenade
3.6 mgd
8.7 mgd
.7 mgd
.7 mgd
2 mgd
S143 ‐ Florin Mall Lift Station
0.5 mgd
S146 ‐ Walnut Grove Pump Station
S147 ‐ Cameron Road Pump Station
Creek Protection Project ‐ Arcade Creek
Pump Station
S132 ‐ Chrysanthy Pump Station
S129 ‐ Fruitridge Center Pump Station
S144 ‐ Wilson Road Pump Station
S145 ‐ Lambert Road Pump Station
S142 ‐ Elk Grove Promenade
S143 ‐ Florin Mall Lift Station
S146 ‐ Walnut Grove Pump Station
S147 ‐ Cameron Road Pump Station
Creek Protection Project ‐ Arcade Creek
Notes
Subject property is a vacant, level, in‐fill commercial lot. Plans approved for a 24,700
$5.73 sqft retail/office center.
Brokered all cash sale to the Catholic Church which owns the adjacent parcel to the
$6.79 west of the subject. Subject property has been marketed and listed as apartment
$3.88
Across the street from Mercy Hospital Folsom, plans to construction medical office
$14.51 bldg.
Arms length transaction thru broker. Vacant office land across the street from
$12.00 Mercy Folsom Hospital. Purchased for investment.
This was an REO sale. The buyer does not have immediate plans for the land at this
$4.23 time.
$4.69 Auto salvage yard.
Unimproved 4‐acre parcel on north side of Elk Grove Blvd about 1/4 mile west of
Bruceville. Buyer plans 110,000 sq ft, 2‐story senior assisted living residential care
$11.31 facility. Seller paid all expenses relating to new parcel map and entitlements. Seller
117‐0220‐025‐0000 to hold for re‐entitlement and sell. Purchase with tentative map
per Comps. MP03 Proposed residential development sold with tentative map to
$1.99 developer for re‐entitlement and re‐sale to builder. Buyer also purchased adjacent
$1.99
$3.52
$3.52
$3.52
Brokered all Cash Sale. First open market sale after internal (Chrysler) CIOS
conveyance pursuant to US Bankruptcy Court. Per Blake Snider (405‐8000), sales
$5.40 price based upon negotiations. Listed @ $11 psf. No freeway visibility.
Brokered cash REO Sale. Confirmed w/Andrew Pfeifer VP 305‐779‐4075 arms length
transaction. Proposed Hyundai dealership ‐ relocating from Florin Rd. MP03
$4.40 contiguous vacant parcels.
0000 Sunrise Bl
$29,900
11/22/2010
22,758
$1.31
Greenback Ln
$100,000
2/25/2010
25,657
$3.90
4/27/2010 560,182
$8.93
100 Promenade Cir
$5,000,000
10635 Fair Oaks Bl
$350,000
9/3/2010
36,590
$9.57
1544 Hood Rd
$368,000
2/19/2010 75,460
Average Commericial Cost
$4.88
$5.80
MP2 Brokered cash sale. One parcel in flood zone. The parcels located in busy and
noisy intersection. Per telephone conversation with the listing agent, Carlos
Skozlows at Coldwell Banker. The other parcel needs off‐sites improvements.
No broker involved in the purchased of the subject property. The subject vacant
land has no street frontage and is landlocked behind parcel #223‐0142‐044‐0000.
Currently, the vacant land is used for storage of containers and cars. The owners of
parcel #223‐0142‐044‐0000, purchased the subject vacant land. Unable to verified
Assemblage, sale out of foreclosure, Full off‐sites, Purchased by Kaiser Foundation
for future medical office building. Buyer states there is no particular timeline for
construction. Subject is located in the Promenade at Gateway Sacramento which is
Direct from seller. Subject located on a very, busy street. The topography is mostly
level with some sloping. No site improvements. Vacant land located on the corner
of Fair Oaks and Central Ave. This corner has a 4‐way stop and is very busy. The
developed for apartments. Some infrastructure in place, road, some electrical and
water. Property was foreclosed on 20091001 and taken by Unite Commercial Bank
as Receiver for East West Bank. Property was listed thru MLS and Loopnet. Buyer
per SF
RESIDENTIAL LAND SALES
Address
Sale Price
2100 6Th St
$100,000
0 57Th St
$75,000
2931 39Th St
$30,000
3833 36Th St
$20,000
4082 73Rd St
$29,000
4440 52Nd St
$45,000
4208 Sierra Vista Av
$5,000
0 Enrico Bl
$50,000
5115 64Th St
$4,000
29 Bunratty Ct
$35,000
978 Briarcrest Wy
$60,000
0 Pocket Rd
$850,000
7713 E Shore Dr
$219,000
6565 Lang Av
$75,000
0 Hing Av
$10,000
0 Citrus Av
$20,000
0 Citrus Av
$19,000
7419 Persimmon Av
$200,000
7471 Della Cr
$75,000
8596 Unsworth Av
$230,000
0 Birch Ranch Dr
$225,000
11867 Country Grdn Dr $1,470,000
4831 Birch Valley Wy
$2,441,000
12295 El Portal Wy
$2,144,000
0 Mormon St
$80,000
659 Hancock Dr
$55,000
801 Cristina Ct
$67,000
805 Cristina Ct
$87,500
1514 Gionata Wy
$52,500
810 Cristina Ct
$80,000
784 Lorena Ln
$75,500
0 Trowbridge Ct
$198,000
107 Kemp Ct
$150,000
498 Listowe Dr
$190,000
729 Heritage Pl
$245,000
$210,000
700 Glen Mady Wy
$148,000
1731 Lake Vista Wy
1763 Barrhead Ct
$185,000
539 Serpa Wy
$172,000
1804 Ruan Ct
$182,500
414 Tobrurry Wy
$150,000
449 Serpa Wy
$250,000
365 Tobrurry Wy
$122,000
369 Tobrurry Wy
$130,000
335 Tobrurry Wy
$130,000
264 Tobrurry Wy
$148,000
323 Tobrurry Wy
$160,000
12785 Thornberg Wy
$262,000
10856 Wraysbury Wy
$246,000
10820 Atherstone Dr
$237,000
6442 Lago Cr
$84,000
6334 Cazador
$25,000
0 Cottonwood Ln
$300,000
7894 Iona Wy
$216,000
0 Gerber Rd
$362,500
0 Gerber Rd
$280,000
8800 Bradshaw Rd
$500,000
$1,840,000
8891 Cobble Crest Dr
10651 Halfway Rd
$66,000
0 Lee School Rd
$143,000
0 Simpson Ranch Ct
$250,000
0 Simpson Ranch Ct
$188,000
$130,000
8900 Good Shepherd Ln
$240,000
8920 Good Shepherd Ln
0 Bradshaw Rd
$280,000
9135 Shire Oaks Ln
$156,500
9136 Shire Oaks Ln
$340,000
0 Meiss Rd
$45,000
0 Washington Av
$50,000
$6,000
3136 Academy Wy
52 Morell Ct
$79,000
$30,000
0 Cottage Wy
6232 Gobernadores Ln
$152,000
1235 Jacob Ln
$150,000
Average Residential Cost
Average of Commercial and Residential
Temporary Construction Easements (10%)
Use for TCE
Permanent Easement (50%)
Use for Permanent Easement
$10.02
$7.91
$0.79
$0.80
$3.96
$4.00
Address
5411 Lambert Rd
8244 Wymark Dr
9990 Winkle Cr
11201 Ketcherside Ln
14059 Diabloview Ct
0 Twin Cities Rd
13067 Stockton Bl
0 Kost Rd
9768 Pringle Av
13459 John Rocha Cr
13570 John Rocha Cr
13500 John Rocha Cr
13444 John Rocha Cr
13472 John Rocha Cr
13585 John Rocha Cr
13542 John Rocha Cr
13514 John Rocha Cr
712 Union St
708 Tyler Is Br Rd
0 Sorento Rd
8341 Nathalie Wy
8340 Nathalie Wy
8336 Nathalie Wy
7341 8Th St
0 7Th Av
637 O St
0 Elkhorn Bl
6740 18Th St
0 U St
7720 Nelson Ln
7129 Walnut Av
231 E St
0 Rio Linda Bl
0 2Nd St
340 Pinedale Av
5041 Sully St
4320 Santa Ana Av
855 Rio Robles Av
0 Peerless Av
0 Telegraph Av
148 Lost Creek Dr
126 Flat Rock Dr
164 Temperance Rv Ct
5425 College Oak Dr
5425 College Oak Dr
0 Walnut Av
5234 Bell Wood Wy
1335 Grace Av
4337 Marysville Bl
4024 Astoria St
4332 Poseidon Ln
0 Hope Ln
4040 Braxton Ln
6350 Mariposa Av
8000 Sunset Av
8261 Winding Wy
4350 Chicago Av
51 Morey Av
3637 Presidio St
0 South Av
8672 Old Villa Ct
3410 Montclaire St
8178 Streng Av
0 Bryan Wy
3925 Hollister Av
0 Fair Oaks Bl
0 Sutter Hill Ln
6148 Sutter Av
6146 Sutter Av
0 Fair Oaks Bl
8490 London Plain Ct
8551 Heather Cross Wy
2741 Altos Av
1035 Sonoma Av
1027 Opal Ln
per SF
per SF
per SF per year
per SF