Technical Memorandum Cost Criteria for 2010 System Capacity Plan

2010 SASD SEWER SYSTEM CAPACITY PLAN UPDATE 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 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 2010 SCP Tech Memo - 7 Cost - Final.Docx Page 1 of 18 November 29, 2011

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 Baseline Construction Open Cut Gravity Sewer Open Cut DIP Force Main Trenchless Pipe Construction Geotechnical Factors Description 8 to 42-inch diameter, 8 to 28 feet deep 4 to 18-inch diameter, 4 to 16 feet deep Bore and Jack, Microtunnel, Pipe Ramming. With and without casing Unit Cost Range $160 to $680/lf $140 to $430/lf $305 to $1,700/lf Section Reference Additional Dewater Deep well system $45 to $60/lf 3.2.1 Additional Sheeting and Shoring Cobble Areas Hard Rock Areas Traffic Control Additional Traffic Control Productivity Factors Congested Traffic/Utility Corridor Remove and Replace Delay Factor 3.1.1 3.1.2 3.1.3 Trench boxes, solid shoring, and sheet piles $30 to $710/lf 3.2.2 Developed Areas Undeveloped Areas Northeastern part of service area For pipe alignments along major roads with four or more lanes of traffic. For pipe alignments along major roads with four or more lanes of traffic. For pipe alignments to be upsized in place. 100% of baseline cost 20% of baseline cost 100% of baseline cost 3.2.3 3.2.3 $45/lf 3.3 15% of baseline cost 25% of baseline cost 3.4.1 3.4.2 2010 SCP Tech Memo - 7 Cost - Final.Docx Page 2 of 18 November 29, 2011

Table 1 Summary of Estimated Unit Cost - Continued Item Surface Restoration Pavement Restoration Landscape Restoration Revegetation Creek Restoration Sewer Structures Junction Structures Pump Stations Description Final Paving and patch paving 15 feet width Replanting in medians and landscaped area 40 feet width Hydroseeding in open areas 80 feet width Replanting and minor bank erosion control 40 feet width Junction, transition, and turning structure 10 MGD or less firm capacity Based on low, medium, and high total dynamic heads. Unit Cost Range Section Reference $100/lf 3.5.1 $3.00/sf 3.5.2 $0.25/sf 3.5.2 $12/sf 3.5.2 $25,000 to $850,000 per structure 3.6.1 $0.5 to $6.1M 3.6.2 Mobilization/Demobilization % of subtotal 5% 3.7 Contingencies % of Estimated Construction Cost Subtotal 30% 3.8 Easement Acquisition Acquisition Cost Easements in Newly Constructed Development Temporary Construction Easements Title reports, appraisals, real estate staff time Granted to SASD as condition of development $7,000 per parcel No Cost to SASD 80 feet width $0.80/sf 3.9 Permanent Easement 20 feet width $4.00/sf 3.9 Engineering, Administration, and Legal Costs % of Estimated Construction Cost 25% 3.10 3.9 3.9 2010 SCP Tech Memo - 7 Cost - Final.Docx Page 3 of 18 November 29, 2011

3. BASIS OF ESTIMATED COST 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 November 29, 2011

Table 2 Open Cut Gravity Pipe Unit Cost Pipe Size (in) Vitrified Clay Pipe 8 to 16 feet depth Open Cut Gravity Pipe Installation Cost ($/lf) 16 to 20 feet depth 20 to 24 feet depth 24 to 28 feet depth 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 November 29, 2011

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 November 29, 2011

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 $260,000. 3.1.3.1 Trenchless Construction Cost The recommended unit costs for trenchless pipe construction are the following: Table 4 Trenchless Pipe Construction Unit Cost Pipe Size (in) Direct Jack (No Casing) Microtunneling* ($/lf) Casing Size (in) Casing Required Microtunneling* ($/lf) Bore and Jack ($/lf) Casing Size (in) Cobble Area 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 November 29, 2011

Table 5 Maximum Drive Lengths Pipe Diameter (in) Drive Length (ft) Microtunneling 8 to 10-inch 1,200 12 to 24-inch 700 27 to 33-inch 400 36-inch and larger 150 Pipe Ramming All Diameters 300 Table 6 Jacking and Receiving Pit Cost Pipe Invert Depth Pit Cost 16 feet or less Jacking Pit $80,000 Receiving Pit $25,000 Greater than 16 feet Jacking Pit $115,000 Receiving Pit $40,000 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 November 29, 2011

Figure 2 High Groundwater Areas 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 November 29, 2011

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) No Groundwater High Groundwater Undeveloped Area High Groundwater Developed Area 8 to 16 Baseline (no additional cost) Partially laid back trench with trench box and dewatering wells. $30/LF + dewatering Solid shoring and dewatering wells. $75/LF + dewatering 16 to 20 Baseline (no additional cost) Partially laid back trench with trench box and dewatering wells. $60/LF + dewatering Solid shoring and dewatering wells. $110/LF + dewatering 20 to 24 Baseline (no additional cost) Partially laid back trench with trench box and dewatering wells. $90/LF + dewatering Solid shoring and dewatering wells Shoring: $135/LF $135/LF + dewatering 24 to 28 Baseline (no additional cost) Partially laid back trench with trench box and dewatering wells. $120/LF + dewatering Interlocking sheet piles $710/LF 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 November 29, 2011

Figure 3 Hard Rock and Cobble Construction Factor Areas 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 November 29, 2011

3.3 Traffic Control 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 November 29, 2011

3.5 Surface Restoration 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 18- inch 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 November 29, 2011

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 November 29, 2011

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 November 29, 2011

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 November 29, 2011

3.10 Engineering, Administration, and Legal Costs 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 November 29, 2011

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 November 29, 2011

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 20 Cities Average CCI Average CCI 2011 Cost Mark Up Factor 9896 8802 9350 1.02 9738 8570 9150 1.04 9363 8310 8840 1.08 9096 7966 8530 1.12 8618 7751 8180 1.16 8309 7446 7880 1.21 8228 7115 7670 1.24

GRAVITY PIPELINE COST Year Description Project Jurisdiction Length Unit Median 2010 6 inch VCP Lower Silver Creek Flood Protection and Creek Restoration Project Interstate 680 to Moss Point Drive (Reaches 4,5, & 6A) Santa Clara Valley Water District Costing Range 50% 150% Weighted Average Adjusted 2011 Cost (ENR CCI 9527) 405 LF $145 $73 $218 $158 $162 $145 $130 $200 Construction Bid 2010 8 inch VCP Franklin Crossing Major Roads Phase 1 City of Elk Grove 636 LF $69 $34 $103 $65 $66 $58 $70 $67 $112 2007 8 inch VCP Parke Bridge Trunk Sewer City of Elk Grove 124 LF $160 $80 $240 $155 $174 $150 $116 $375 $194 $160 Sacramento Housing and 2006 8 inch VCP Redevelopment Agency 1890 LF $125 $63 $188 $126 $146 $125 $225 $125 $110 $145 Laguna Ridge Whitelock Parkway 2006 8 inch VCP Segment 1 City of Elk Grove 254 LF $166 $83 $249 $166 $193 $166 Laguna Ridge Whitelock Parkway 2006 8 inch VCP Segment 2 City of Elk Grove 1787 LF $145 $73 $218 $145 $168 $145 2006 8 inch VCP Olive Avenue Sewer Trunk Extension County of Sacramento 274 LF $275 $138 $413 $306 $354 $275 $336 $93 2006 8 inch VCP NVS Phase A1 Infrastructure Sacramento 192 LF $290 $145 $435 $247 $287 $150 $302 $290 2005 8 inch VCP Laguna Ridge (North Shed C) Sacramento 1730 LF $135 $68 $203 $130 $157 $84 $130 $165 $140 Gravity Sewer Installation and Sewer 2010 8 inch VCP Lift Station Demolition at Oceanhill City of Huntington Lane from Oceanhill Lane to Beach Beach Boulevard at Adams Avenue 335 LF $210 $105 $315 $206 $210 $175 $210 $120 $310 $215 Castro Valley Sanitary Trunk Sewer 2010 8 inch VCP Project County of Alameda 254 LF $200 $100 $300 $187 $191 $130 $140 $260 $131 $208 $200 $240 2007 8 inch VCP Elk Grove Major Roads City of Elk Grove 5726 LF $50 $25 $75 $50 $56 $48 $46 $50 $57 $48 $48 $109 $86 $55 2007 10 inch VCP Elk Grove Major Roads City of Elk Grove 1021 LF $62 $31 $93 $65 $73 $55 $52 $54 $62 $54 $91 $106 $93 $63 Laguna Ridge Whitelock Parkway 2006 12 inch VCP Segment 1 City of Elk Grove 835 LF $195 $98 $293 $195 $226 $195 Laguna Ridge Whitelock Parkway 2006 12 inch VCP Segment 2 City of Elk Grove 1584 LF $170 $85 $255 $170 $197 $170 2006 12 inch VCP NVS Phase A1 Infrastructure Sacramento 269 LF $250 $125 $375 $249 $289 $166 $331 $250 Lower Silver Creek Flood Protection 2010 and Creek Restoration Project Santa Clara Valley 12 inch VCP Interstate 680 to Moss Point Drive Water District (Reaches 4,5, & 6A) 290 LF $180 $90 $270 $193 $197 $150 $180 $250 2010 15 inch VCP Franklin Crossing Major Roads Phase 1 City of Elk Grove 1143 LF $91 $46 $137 $87 $89 $75 $92 $90 $92 2008 15 inch VCP Laguna Ridge Bruceville Road Phase II City of Elk Grove 1254 LF $96 $48 $144 $95 $103 $145 $94 $96 2006 15 inch VCP Olive Avenue Sewer Trunk Extension County of Sacramento 521 LF $190 $95 $285 $168 $194 $190 $190 $123 2006 15 inch VCP Bruceville Road Segment A City of Elk Grove 649 LF $170 $85 $255 $170 $197 $170 2005 15 inch VCP Laguna Ridge (North Shed C) Sacramento 557 LF $165 $83 $248 $156 $189 $115 $170 $180 $160

Year Description Project Jurisdiction Length Unit Median Costing Range 50% 150% Weighted Average Adjusted 2011 Cost (ENR CCI 9527) Construction Bid 2006 15 inch VCP Aerojet Interceptor 1B County of Sacramento 106 LF $358 $179 $536 $346 $402 $255 $330 $415 $385 2005 18 inch VCP Laguna Ridge (North Shed C) Sacramento 4048 LF $193 $96 $289 $190 $229 $138 $195 $190 $235 Castro Valley Sanitary Trunk Sewer 2010 18 inch VCP Project County of Alameda 2691 LF $200 $100 $300 $212 $216 $200 $180 $200 $252 $188 $250 $214 2009 18 inch VCP Lake Murray Trunk Sewer City of San Diego 2549 LF $147 $74 $221 $132 $138 $92 $120 $160 $150 $92 $95 $134 $225 $170 $147 $163 Magnolia Fillmore Golden Sewer From 2010 18 inch VCP SR 91 to Cochran Avenue City of Riverside 1340 LF $175 $88 $263 $164 $167 $121 $140 $150 $183 $120 $185 $175 $195 $205 Magnolia Fillmore Golden Sewer From 2010 18 inch VCP SR 91 to Cochran Avenue City of Riverside 2075 LF $185 $93 $278 $184 $188 $134 $162 $185 $173 $175 $199 $225 $195 $208 2005 21 inch VCP Laguna Ridge (North Shed C) Sacramento 1191 LF $225 $113 $338 $225 $273 $181 $250 $200 $270 2005 24 inch VCP Laguna Ridge (North Shed C) Sacramento 4631 LF $279 $139 $418 $263 $318 $209 $286 $277 $280 2005 24 inch VCP Natomas Phase 1 County of Sacramento 2904 LF $391 $196 $587 $393 $476 $391 $348 $440 2005 24 inch VCP Natomas Phase 2 County of Sacramento 1058 LF $600 $300 $900 $526 $636 $451 $1,100 $600 Castro Valley Sanitary Trunk Sewer 2010 24 inch VCP Project County of Alameda 1161 LF $300 $150 $450 $299 $305 $320 $260 $240 $389 $253 $300 $330 Castro Valley Sanitary Trunk Sewer 2010 24 inch VCP Project County of Alameda 2265 LF $251 $126 $377 $267 $272 $250 $260 $250 $263 $251 $350 $245 2009 24 inch VCP Lake Murray Trunk Sewer City of San Diego 1163 LF $200 $100 $300 $197 $204 $167 $200 $190 $225 $150 $155 $163 $200 $275 $241 $417 2005 27 inch VCP Laguna Ridge (North Shed C) Sacramento 1130 LF $343 $171 $514 $320 $387 $224 $335 $350 $370 2006 27 inch VCP Aerojet Interceptor 1B County of Sacramento 201 LF $438 $219 $656 $428 $496 $425 $375 $450 $460 2006 27 inch VCP NVS Phase A1 Infrastructure Sacramento 1929 LF $290 $145 $435 $292 $338 $303 $282 $290 2009 27 inch VCP Lake Murray Trunk Sewer City of San Diego 3668 LF $247 $124 $371 $234 $244 $152 $250 $205 $240 $247 $210 $184 $270 $270 $317 $405 2005 30 inch VCP Laguna Ridge (North Shed C) Sacramento 222 LF $410 $205 $615 $390 $472 $229 $450 $370 $510 Sacramento Housing and 2006 30 inch VCP Redevelopment Agency 2940 LF $705 $353 $1,058 $693 $804 $720 $640 $535 $705 $867 Sacramento Housing and 2006 30 inch VCP Redevelopment Agency 910 LF $500 $250 $750 $465 $540 $830 $500 $456 $440 $867 Sacramento Housing and 2006 30 inch VCP Redevelopment Agency 705 LF $565 $283 $848 $493 $571 $930 $565 $473 $440 $867 2006 30 inch VCP NVS Phase A1 Infrastructure Sacramento 6123 LF $325 $163 $488 $353 $410 $425 $325 $310 2006 36 inch VCP Aerojet Interceptor 1B County of Sacramento 2677 LF $453 $226 $679 $483 $560 $415 $400 $490 $625

Pipe Cost $1,000 $800 $600 $400 $200 $0 Pipe Cost vs Pipe Diameter 0 5 10 15 20 25 30 35 40 Pipe Diameter (in) Series1 Linear (Series1) y = 14.45x + 25.07 R² = 0.538 VCP GRAVITY PIPELINE COST Pipe Size Cost Depth 8' to 16' 16' to 20' 20' to 24' 24' to 28' 6 111.77 8 to 16 $131 8 140.67 8 to 16 $160 10 169.57 8 to 16 $189 12 198.47 8 to 16 $213 15 241.82 8 to 16 $257 18 285.17 16 to 20 $312 21 328.52 16 to 20 $356 24 371.87 16 to 20 $404 27 415.22 16 to 20 $447 30 458.57 20 to 24 $491 33 501.92 20 to 24 $534 36 545.27 20 to 24 $577 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 USE THIS FOR GRAVITY PIPELINE COST Average Cost Spacing 400 Spacing 500 Pipe Size 8' to 16' 16' to 20' 20' to 24' 24' to 28' 7500 19 15 VCP 6 135 160 13500 N/A 27 VCP 8 160 185 8000 N/A 16 VCP 10 190 210 16000 N/A 32 VCP 12 220 235 260 285 19000 N/A 38 VCP 15 255 275 300 325 VCP 18 285 310 340 370 VCP 21 330 355 385 415 VCP 24 365 390 420 450 VCP 27 395 420 455 490 VCP 30 430 460 495 530 VCP 33 465 495 530 565 VCP 36 495 530 570 610 RCP 39 530 565 605 645 RCP 42 565 600 640 680 CHECK MASTER PLAN 2006 ADJUSTED VALUES (ENR CCI 8064) 8' to 16' 16' to 20' 20' to 24' 24' to 28' Pipe Size Adjusted Adjusted Adjusted Adjusted Value Variance Variance Variance Value Value Value Variance 6 N/A N/A N/A N/A 8 $177 $17 N/A N/A N/A 10 $201 $11 N/A N/A N/A 12 $224 $4 $236 $1 $260 $0 $284 $1 15 $260 $5 $284 $9 $295 $5 $319 $6 18 $295 $10 $319 $9 $343 $3 $366 $4 21 $331 $1 $354 $1 $378 $7 $402 $13 24 $366 $1 $390 $0 $413 $7 $449 $1 27 $402 $7 $425 $5 $461 $6 $496 $6 30 $437 $7 $461 $1 $496 $1 $532 $2 33 $473 $8 $508 $13 $543 $13 $579 $14 36 $508 $13 $543 $13 $579 $9 $626 $16 39 $532 $2 $579 $14 $614 $9 $662 $17 Check Okay 42 $567 $2 $614 $14 $662 $22 $709 $29

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 4" DIP less than 10 feet deep 4" DIP 10 to 16 feet deep 6" DIP less than 10 feet deep 6" DIP 10 to 16 feet deep 8" DIP less than 10 feet deep 8" DIP 10 to 16 feet deep 10" DIP less than 10 feet deep 10" DIP 10 to 16 feet deep 12" DIP less than 10 feet deep 12" DIP 10 to 16 feet deep 15" DIP less than 10 feet deep 15" DIP 10 to 16 feet deep 18" DIP less than 10 feet deep 18" DIP 10 to 16 feet deep 21" DIP less than 10 feet deep 21" DIP 10 to 16 feet deep 24" DIP less than 10 feet deep 24" DIP 10 to 16 feet deep Pavement Intermediate Hauling of Cost Per Trench ARV Installation Pipe and Backfill & Removal/Temporary Dewatering Pipe Bedding Backfill & Excess Native Total Cost Linear Excavation and Manhole Installation Compaction Replacement Compaction Material Foot Use CY $/CY CY $/CY CY $/CY LF $/LF LF $/LF CY $/CY CY $/CY CY $/CY LS $/LS $ $/LF $/LF 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 $140 500 $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 $200 500 $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 $150 500 $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 $205 500 $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 $160 500 $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 $210 500 $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 $170 500 $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 $225 500 $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 $180 667 $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 $240 667 $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 $245 667 $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 $325 667 $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 $275 667 $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 $355 667 $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 $300 667 $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 $380 667 $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 $355 667 $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 $430 Use these cost for force mains Force Main Diameter (in) 4 6 8 10 12 15 18 21 24 Less than 10 Feet 10 to 16 Feet Deep Deep Cost ($/lf) Cost ($/lf) 140 200 150 205 160 210 170 225 180 240 245 325 275 355 300 355 380 430 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

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. Carrier Pipe Diameter (in) 8 10 12 15 18 21 24 27 30 33 36 39 42 Steel Casing Pipe Diameter (in) Bore and Jack Cost ($/lf) Pipe and Installation Cost ($/lf) Total Bore and Jack Cost ($/lf) Use this for Bore and Jack Unit Cost ($/lf) 36 575 $40.50 $616 $615 36 575 $51.50 $627 $625 36 575 $56.00 $631 $630 36 575 $78.00 $653 $655 42 625 $42.50 $668 $670 43 675 $46.50 $722 $720 49 735 $58.00 $793 $795 51 765 $79.00 $844 $845 56 800 $87.50 $888 $890 59 845 $100.25 $945 $945 64 925 $113.00 $1,038 $1,040 68 980 $124.00 $1,104 $1,105 72 1030 $135.00 $1,165 $1,165

Assumptions: Average production rate is 32 to 60 feet per day. MOBILIZATION AND DEMOBILIZATION Typical mobilization cost approximately $44,000 per day. MICROTUNNELING COST Unit price of microtunnel includes the cost of bore and carrier pipe. Mobilization and demobilization is separate. Smaller pipelines (15 inch diameter or smaller) will be using microtunneling for force mains, pipe material will be ductile iron. Larger pipeline (18 inch diameter or greater) will be using microtunneling for trunk sewers, pipe material will be reinforced concrete. Jacking and receiving pits will be separate items and are not included in the unit cost of pipe ramming. Bore Hole Diameter Less than 24 inch 24 to 48 inch Greater than 48 inch Mobilization/ Demobilization ($/Day) $44,000 $44,000 $44,000 Traveling Days 2.5 4 6 Mobilization/Demobilization Cost (Job) $110,000 $180,000 $260,000 MICROTUNNEL Pipe Diameter (in) 8 DIP 10 DIP 12 DIP 15 DIP 18 RCP 21 RCP 24 RCP 27 RCP 30 RCP 33 RCP 36 RCP 39 RCP 42 RCP Use this for Tunnel Tunnel Tunnel Equipment Casing Carrier Microtunnel Microtunnel Diameter Production Rate Equipment Technician Installation Pipe Unit Cost Unit Cost (in) (lf/day) ($/lf) ($/lf) ($/lf) ($/lf) ($/lf) ($/lf) 8 60 $75.00 $10.33 $733.33 $0.00 $819 $820 10 60 $75.00 $10.33 $733.33 $0.00 $819 $820 12 60 $75.00 $10.33 $733.33 $0.00 $819 $820 15 58 $77.59 $10.69 $758.62 $0.00 $847 $845 18 58 $77.59 $10.69 $758.62 $0.00 $847 $845 21 55 $81.82 $11.27 $800.00 $0.00 $893 $895 24 50 $90.00 $12.40 $880.00 $0.00 $982 $980 27 50 $90.00 $12.40 $880.00 $0.00 $982 $980 30 50 $90.00 $12.40 $880.00 $0.00 $982 $980 33 50 $90.00 $12.40 $880.00 $0.00 $982 $980 36 50 $90.00 $12.40 $880.00 $0.00 $982 $980 39 50 $90.00 $12.40 $880.00 $0.00 $982 $980 42 50 $90.00 $12.40 $880.00 $0.00 $982 $980 36 50 $90.00 $12.40 $880.00 $40.50 $1,023 $1,025 36 50 $90.00 $12.40 $880.00 $51.50 $1,034 $1,035 36 50 $90.00 $12.40 $880.00 $56.00 $1,038 $1,040 36 50 $90.00 $12.40 $880.00 $78.00 $1,060 $1,060 42 50 $90.00 $12.40 $880.00 $42.50 $1,025 $1,025 43 50 $90.00 $12.40 $880.00 $46.50 $1,029 $1,030 49 49 $91.84 $12.65 $897.96 $58.00 $1,060 $1,060 51 48 $112.50 $15.50 $916.67 $79.00 $1,124 $1,125 56 47 $114.89 $15.83 $936.17 $87.50 $1,154 $1,155 59 44 $122.73 $16.91 $1,000.00 $100.25 $1,240 $1,240 64 41 $131.71 $18.15 $1,073.17 $113.00 $1,336 $1,335 68 37 $145.95 $20.11 $1,189.19 $124.00 $1,479 $1,470 72 32 $168.75 $23.25 $1,375.00 $135.00 $1,702 $1,700

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 Casing Size 37 inch 40 inch 42 inch 47 inch 55 inch 56 inch 61 inch 63 inch 68 inch 71 inch 76 inch 80 inch 84 inch Pipe Ramming Cost 2000 (ENR CCI 6474) ($/lf) Adjusted Pipe Ramming Cost (ENR CCI 9527) ($/lf) Pipe Size Pipe and Installation Cost ($/lf) Pipe Type Total Pipe Ramming Cost ($/lf) Use this for Pipe Ramming Cost ($/lf) $180 $265 8 inch $40.50 DIP $305 $305 $200 $294 10 inch $51.50 DIP $346 $345 $220 $324 12 inch $56.00 DIP $380 $380 $260 $383 15 inch $78.00 DIP $461 $460 $315 $464 18 inch $42.50 RCP $506 $505 $315 $464 21 inch $46.50 RCP $510 $510 $330 $486 24 inch $58.00 RCP $544 $545 $365 $537 27 inch $79.00 RCP $616 $615 $390 $574 30 inch $87.50 RCP $661 $660 $420 $618 33 inch $100.25 RCP $718 $720 $480 $706 36 inch $113.00 RCP $819 $820 $520 $765 39 inch $124.00 RCP $889 $890 $560 $824 42 inch $135.00 RCP $959 $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 Depth (ft) 8 to 16 16 to 20 20 to 24 24 to 28 No Groundwater High Groundwater Undeveloped Area (LF) High Groundwater Developed Area (LF) No Groundwater High Groundwater Undeveloped Area (LF) High Groundwater Developed Area (LF) No Groundwater High Groundwater Undeveloped Area (LF) High Groundwater Developed Area (LF) Baseline 20 50 Baseline $29 $74 Baseline $30 $75 Baseline 40 75 Baseline $59 $110 Baseline $60 $110 Baseline 60 90 Baseline $88 $132 Baseline $90 $135 Baseline 80 480 Baseline $118 $706 Baseline $120 $710 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 =$26.50 sf Sheet Piles = $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 Quantity Unit Cost Unit Cost Traffic Control Design 1 $25,000.00 LS $25,000.00 K Type Rail 2000 $24.00 LF $48,000.00 Portable Changeable Message 1 $10,000.00 EA $10,000.00 Channelizer/Crash barrels 1 $5,000.00 LS $5,000.00 Total $88,000.00 Price per Linear Foot $44.00 Use this for traffic control $45/LF

REVEGETATION COST Bid Year Description Project Jurisdiction Quantity Unit Median Cost Range 50% 150% Weighted Average Adjusted to 2011 Cost (ENR 9527) ($/SF) Construction Bid 2010 Hydroseeding 2010 Hydroseeding 2010 Hydroseeding 2010 Hydroseeding Lower Silver Creek Flood Protection and Creek Restoration Project Lower Silver Creek Flood Protection and Creek Restoration Project Lower Silver Creek Flood Protection and Creek Restoration Project Lower Silver Creek Flood Protection and Creek Restoration Project 2009 Hydroseeding Metro Air Park Gravity Connector 2009 Hydroseeding Metro Air Park Force Main Santa Clara Valley Water District Santa Clara Valley Water District Santa Clara Valley Water District Santa Clara Valley Water District County of Sacramento County of Sacramento 84330 SF $0.25 $0.13 $0.38 $0.27 $0.27 $0.28 $0.10 $0.25 38500 SF $0.15 $0.08 $0.23 $0.13 $0.13 $0.15 $0.10 $0.25 7900 SF $0.13 $0.07 $0.20 $0.12 $0.12 $0.13 $0.10 $0.25 26200 SF $0.12 $0.06 $0.18 $0.11 $0.11 $0.10 $0.12 $0.25 2 AC $2,500.00 $1,250.00 $3,750.00 $2,266.67 $0.05 $2,500.00 $1,800.00 $6,000.00 $2,500.00 12 AC $1,700.00 $850.00 $2,550.00 $1,764.05 $0.04 $1,700.00 $1,600.00 $2,000.00 $1,250.00 $1,900.00 $1,250.00 $1,635.00 $1,600.00 $2,900.00 $2,100.00 $1,700.00 $2,525.87 $1,907.75 Average $0.12 Use $0.25 per 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 Flow (MGD) Flow (GPM) Velocity (fps) Nominal Pipe Size (in) Pipe Inside Diameter (in) Pipe Length (ft) Friction Head (ft) C=130 Static Head (ft) Minor Head (ft) TDH (psi) Discharge Pressure (psi) Pump Horse Power (hp) 1 MGD 1.00 694 7.9 6 6.0 500 19 47 0 65 29 23 1 MGD 1.00 694 7.9 6 6.0 3,600 136 47 0 183 80 64 1 MGD 1.00 694 4.4 8 8.0 500 5 47 0 51 22 18 1 MGD 1.00 694 4.4 8 8.0 14,300 134 47 0 180 79 63 2 MGD 2.00 1,389 5.7 10 10.0 500 6 47 0 52 23 37 2 MGD 2.00 1,389 5.7 10 10.0 12,000 137 47 0 183 80 128 2 MGD 2.00 1,389 3.9 12 12.0 500 2 47 0 49 21 34 2 MGD 2.00 1,389 3.9 12 12.0 20,000 94 47 0 140 62 98 3 MGD 3.00 2,083 5.9 12 12.0 500 5 47 0 51 23 54 3 MGD 3.00 2,083 5.9 12 12.0 13,800 137 47 0 183 80 193 3 MGD 3.00 2,083 3.8 15 15.0 500 2 47 0 48 21 51 3 MGD 3.00 2,083 3.8 15 15.0 20,000 67 47 0 114 50 119 4 MGD 4.00 2,778 5.0 15 15.0 500 3 47 0 49 22 69 4 MGD 4.00 2,778 5.0 15 15.0 20,000 114 47 0 161 70 225 4 MGD 4.00 2,778 3.5 18 18.0 500 1 47 0 48 21 67 4 MGD 4.00 2,778 3.5 18 18.0 20,000 47 47 0 94 41 131 5 MGD 5.00 3,472 6.3 15 15.0 500 4 47 0 51 22 89 5 MGD 5.00 3,472 6.3 15 15.0 15,700 135 47 0 182 80 319 5 MGD 5.00 3,472 4.4 18 18.0 500 2 47 0 48 21 85 5 MGD 5.00 3,472 4.4 18 18.0 20,000 71 47 0 118 52 206 5 MGD 5.00 3,472 3.2 21 21.0 500 1 47 0 47 21 83 5 MGD 5.00 3,472 3.2 21 21.0 20,000 34 47 0 80 35 140 6 MGD 6.00 4,167 7.6 15 15.0 500 6 47 0 53 23 111 6 MGD 6.00 4,167 7.6 15 15.0 11,300 137 47 0 183 80 385 6 MGD 6.00 4,167 5.3 18 18.0 500 2 47 0 49 21 103 6 MGD 6.00 4,167 5.3 18 18.0 20,000 100 47 0 146 64 307 6 MGD 6.00 4,167 3.9 21 21.0 500 1 47 0 48 21 100 6 MGD 6.00 4,167 3.9 21 21.0 20,000 47 47 0 94 41 197 6 MGD 6.00 4,167 3.0 24 24.0 500 1 47 0 47 21 99 6 MGD 6.00 4,167 3.0 24 24.0 20,000 25 47 0 71 31 150

Pump Station Flow (MGD) Flow (GPM) Velocity (fps) Nominal Pipe Size (in) Pipe Inside Diameter (in) Pipe Length (ft) Friction Head (ft) C=130 Static Head (ft) Minor Head (ft) TDH (psi) Discharge Pressure (psi) Pump Horse Power (hp) 7 MGD 7.00 4,861 6.1 18 18.0 500 3 47 0 50 22 122 7 MGD 7.00 4,861 6.1 18 18.0 20,000 132 47 0 179 78 439 7 MGD 7.00 4,861 4.5 21 21.0 500 2 47 0 48 21 118 7 MGD 7.00 4,861 4.5 21 21.0 20,000 63 47 0 109 48 268 7 MGD 7.00 4,861 3.4 24 24.0 500 1 47 0 47 21 116 7 MGD 7.00 4,861 3.4 24 24.0 20,000 33 47 0 79 35 194 8 MGD 8.00 5,556 7.0 18 18.0 500 4 47 0 51 22 142 8 MGD 8.00 5,556 7.0 18 18.0 16,000 136 47 0 182 80 511 8 MGD 8.00 5,556 5.1 21 21.0 500 2 47 0 49 21 136 8 MGD 8.00 5,556 5.1 21 21.0 20,000 80 47 0 127 56 355 8 MGD 8.00 5,556 3.9 24 24.0 500 1 47 0 48 21 133 8 MGD 8.00 5,556 3.9 24 24.0 20,000 42 47 0 88 39 248 8 MGD 8.00 5,556 3.1 27 27.0 500 1 47 0 47 21 132 8 MGD 8.00 5,556 3.1 27 27.0 20,000 24 47 0 70 31 197 9 MGD 9.00 6,250 7.9 18 18.0 500 5 47 0 52 23 163 9 MGD 9.00 6,250 7.9 18 18.0 13,000 137 47 0 183 80 579 9 MGD 9.00 6,250 5.8 21 21.0 500 2 47 0 49 21 155 9 MGD 9.00 6,250 5.8 21 21.0 20,000 100 47 0 146 64 461 9 MGD 9.00 6,250 4.4 24 24.0 500 1 47 0 48 21 151 9 MGD 9.00 6,250 4.4 24 24.0 20,000 52 47 0 98 43 311 9 MGD 9.00 6,250 3.5 27 27.0 500 1 47 0 47 21 149 9 MGD 9.00 6,250 3.5 27 27.0 20,000 29 47 0 76 33 239 10 MGD 10.00 6,944 6.4 21 21.0 500 3 47 0 50 22 174 10 MGD 10.00 6,944 6.4 21 21.0 20,000 121 47 0 167 73 587 10 MGD 10.00 6,944 4.9 24 24.0 500 2 47 0 48 21 169 10 MGD 10.00 6,944 4.9 24 24.0 20,000 63 47 0 110 48 385 10 MGD 10.00 6,944 3.9 27 27.0 500 1 47 0 47 21 166 10 MGD 10.00 6,944 3.9 27 27.0 20,000 36 47 0 82 36 288 10 MGD 10.00 6,944 3.2 30 30.0 500 1 47 0 47 21 165 10 MGD 10.00 6,944 3.2 30 30.0 20,000 21 47 0 68 30 238 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 Wet Well Depth Average PS Cost Low Capacity 15 feet 20 feet 25 feet 30 feet 35 feet 40 feet 45 feet Head <1 MGD $430,000 $430,000 $430,000 1 to 2 MGD $739,000 $751,000 $745,000 2 to 3 MGD $1,040,000 $1,170,000 $1,105,000 3 to 4 MGD $1,490,000 $1,670,000 $1,580,000 4 to 5 MGD $1,790,000 $2,010,000 $1,900,000 5 to 6 MGD $2,350,000 $2,620,000 $2,485,000 6 to 7 MGD $2,680,000 $3,000,000 $2,840,000 7 to 8 MGD $3,360,000 $3,720,000 $3,540,000 8 to 9 MGD $3,720,000 $4,130,000 $3,925,000 9 to 10 MGD $4,080,000 $4,530,000 $4,305,000 *Add 20% markup to account for variability in small pump stations Adjusted PS Cost (ENR CCI 9527) Low Head $557,678 $805,175 $1,194,252 $1,707,619 $2,053,466 $2,685,717 $3,069,391 $3,825,931 $4,242,028 $4,652,721 Use these Low Head Pump Station Values $560,000* $810,000 $1,200,000 $1,700,000 $2,100,000 $2,700,000 $3,100,000 $3,800,000 $4,200,000 $4,700,000 100 feet TDH (ENR CCI 8815) Average PS PS Firm Wet Well Depth Cost Capacity 15 feet 20 feet 25 feet 30 feet 35 feet 40 feet 45 feet Medium <1 MGD $522,000 $522,000 $522,000 1 to 2 MGD $896,000 $912,000 $904,000 2 to 3 MGD $1,250,000 $1,380,000 $1,315,000 3 to 4 MGD $1,740,000 $1,920,000 $1,830,000 4 to 5 MGD $2,080,000 $2,310,000 $2,195,000 5 to 6 MGD $2,680,000 $2,950,000 $2,815,000 6 to 7 MGD $3,040,000 $3,360,000 $3,200,000 7 to 8 MGD $3,760,000 $4,120,000 $3,940,000 8 to 9 MGD $4,150,000 $4,560,000 $4,355,000 9 to 10 MGD $4,540,000 $4,990,000 $4,765,000 *Add 20% markup to account for variability in small pump stations Adjusted PS Cost (ENR CCI 9527) Medium Head $676,995 $977,017 $1,421,214 $1,977,812 $2,372,293 $3,042,372 $3,458,469 $4,258,239 $4,706,760 $5,149,876 Use these Medium Head Pump Station $680,000* $980,000 $1,400,000 $2,000,000 $2,400,000 $3,000,000 $3,500,000 $4,300,000 $4,700,000 $5,100,000 180 feet TDH (ENR CCI 8815) Wet Well Depth Average PS PS Firm Cost High Capacity 15 feet 20 feet 25 feet 30 feet 35 feet 40 feet 45 feet Head <1 MGD $653,000 $653,000 $653,000 1 to 2 MGD $1,130,000 $1,140,000 $1,135,000 2 to 3 MGD $1,570,000 $1,710,000 $1,640,000 3 to 4 MGD $2,150,000 $2,330,000 $2,240,000 4 to 5 MGD $2,580,000 $2,810,000 $2,695,000 5 to 6 MGD $3,260,000 $3,530,000 $3,395,000 6 to 7 MGD $3,700,000 $4,020,000 $3,860,000 7 to 8 MGD $4,500,000 $4,860,000 $4,680,000 8 to 9 MGD $4,970,000 $5,380,000 $5,175,000 9 to 10 MGD $5,440,000 $5,890,000 $5,665,000 *Add 20% markup to account for variability in small pump stations Adjusted PS Cost (ENR CCI 9527) High Head $846,892 $1,226,676 $1,772,465 $2,420,928 $2,912,679 $3,669,219 Use these High Head Pump Station Values $850,000* $1,200,000 $1,800,000 $2,400,000 $2,900,000 $3,700,000 $4,171,778 $4,200,000 $5,058,010 $5,100,000 $5,592,992 $6,122,570 $5,600,000 $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 QUANTITY UNIT COST UNIT COST 1 20000 LS $20,000 1 4000 LS $4,000 1600 1.01 SY $1,616 1 10000 LS $10,000 1600 26.28 SY $42,048 522 71.5 Ton $37,323 435 47.5 LF $20,663 2 3600 EA $7,200 1 800 EA $800 1 5000 EA $5,000 1 4000 EA $4,000 1 85000 LS $85,000 100 160 LF $16,000 1 8500 EA $8,500 1 75000 $75,000 1 25000 $25,000 1 100000 $100,000 1 50000 $50,000 2 15000 $30,000 1 10000 LS $10,000 $0 $0 Total $552,150 compared to $560,000 okay Check Pump Station Cost Against Previously Built Projects Bid Year Pump Station Capacity PS Head Medium Bid Acceptable Bid Range Adjusted Average Weighted Average Comparison Pump Bid 2011(ENR CCI Bid Station Cost 2011 9527) 50% + 50% Pump Station Bids 2004 S132 Chrysanthy Pump Station 3.6 mgd Low 1,225,000.00 612,500 1,837,500 1,242,361 1,540,528 1,700,000 1,011,637 1,127,349 1,205,000 1,058,500 1,193,700 1,142,200 1,309,000 1,372,725 1,225,000 1,399,000 1,348,818 1,351,194 1,406,573 2004 S129 Fruitridge Center Pump Station 8.7 mgd 5,557,945.50 2,778,973 8,336,918 5,227,223 6,481,756 5,600,000 3,566,500 4,938,641 6,177,250 6,226,500 2007 S144 Wilson Road Pump Station.7 mgd High 1,046,460.00 523,230 1,569,690 1,065,596 1,193,467 710,000 895,454 1,268,410 875,540 1,261,250 940,200 1,152,720 2007 S145 Lambert Road Pump Station.7 mgd High 875,580.00 437,790 1,313,370 911,765 1,021,177 710,000 840,330 900,460 804,300 1,064,900 850,700 1,009,900 2008 S142 Elk Grove Promenade 2 mgd 727,000.00 363,500 1,090,500 736,823 795,769 810,000 767,270 716,200 727,000 S143 Florin Mall Lift Station 0.5 mgd 2008 Low 511,195.00 255,598 766,793 560,557 605,401 460,000 697,264 511,195 473,211 2008 S146 Walnut Grove Pump Station 1.6 mgd High 1,395,050.00 697,525 2,092,575 1,353,081 1,461,328 1,200,000 1,436,300 1,328,566 1,384,200 1,466,200 1,593,960 950,530 1,297,320 1,152,399 1,247,300 1,536,199 1,438,100 1,405,900 2008 S147 Cameron Road Pump Station 1.6 mgd High 1,358,775.00 679,388 2,038,163 1,301,271 1,405,373 1,200,000 1,425,675 1,234,855 1,380,050 1,376,650 1,473,100 1,024,350 1,258,575 1,083,392 1,102,800 1,488,133 1,340,900 1,426,775 2011 Creek Protection Project Arcade Creek 0.5 mgd Low 508,700.00 254,350 763,050 482,633 482,633 460,000 290,500 429,800 512,700 572,000 330,000 508,700 595,000 454,000 651,000 Bid Year Pump Station Capacity Adjusted Adjusted Actual Cost Weighted Average Bid Actual Cost Comparison Pump of Pump Average Bid 2011(ENR CCI of PS (ENR Station Cost Station 2011 9527) CCI 2011) Variance 2004 S132 Chrysanthy Pump Station 3.6 mgd 1,242,361 1,540,528 1,011,637 1,254,430 1,700,000 26.21% 2004 S129 Fruitridge Center Pump Station 8.7 mgd 5,227,223 6,481,756 3,566,500 4,422,460 5,600,000 21.03% 2007 S144 Wilson Road Pump Station.7 mgd 1,065,596 1,193,467 875,540 980,605 850,000 15.37% 2007 S145 Lambert Road Pump Station.7 mgd 911,765 1,021,177 804,300 900,816 850,000 5.98% 2008 S142 Elk Grove Promenade 2 mgd 736,823 795,769 767,270 828,652 970,000 14.57% 2008 S143 Florin Mall Lift Station 0.5 mgd 560,557 605,401 697,264 753,045 550,000 36.92% 2008 S146 Walnut Grove Pump Station 1.6 mgd 1,353,081 1,461,328 1,297,320 1,401,106 1,200,000 16.76% 2008 S147 Cameron Road Pump Station 1.6 mgd 1,301,271 1,405,373 1,258,575 1,359,261 1,200,000 13.27% 2011 Creek Protection Project Arcade Creek 0.5 mgd 482,633 482,633 454,000 454,000 550,000 17.45%

REAL ESTATE COST COMMERCIAL LAND SALES Address Sale Price Sale Date SF $/SF 6451 Stockton Bl $615,000 7/23/2010 107,288 $5.73 Augusta Wy $72,500 10/29/2010 10,683 $6.79 0000 Reese Rd $46,500 2/17/2010 12,000 $3.88 1200 Creekside Dr $2,200,000 6/22/2010 151,589 $14.51 0000 Creekside Dr $820,620 8/13/2010 68,389 $12.00 0000 Iron Point Rd $2,475,000 6/24/2010 584,531 $4.23 0000 Recycle Rd $250,000 6/30/2010 53,302 $4.69 6915 Elk Grove Bl $2,000,000 7/30/2010 176,804 $11.31 8706 W Stockton Bl $1,250,000 6/8/2010 629,573 $1.99 8706 W Stockton Bl $1,250,000 6/8/2010 629,573 $1.99 8980 Grant Line Rd $602,000 10/15/2010 171,191 $3.52 8980 Grant Line Rd $602,000 10/15/2010 171,191 $3.52 8980 Grant line Rd $602,000 10/15/2010 171,191 $3.52 Laguna Grove Dr $1,300,000 3/24/2010 240,887 $5.40 9770 Auto City Dr $1,084,000 5/21/2010 246,550 $4.40 Notes Subject property is a vacant, level, in fill commercial lot. Plans approved for a 24,700 sqft retail/office center. Brokered all cash sale to the Catholic Church which owns the adjacent parcel to the west of the subject. Subject property has been marketed and listed as apartment Across the street from Mercy Hospital Folsom, plans to construction medical office bldg. Arms length transaction thru broker. Vacant office land across the street from Mercy Folsom Hospital. Purchased for investment. This was an REO sale. The buyer does not have immediate plans for the land at this time. 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 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 developer for re entitlement and re sale to builder. Buyer also purchased adjacent Brokered all Cash Sale. First open market sale after internal (Chrysler) CIOS conveyance pursuant to US Bankruptcy Court. Per Blake Snider (405 8000), sales 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 contiguous vacant parcels. 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 0000 Sunrise Bl $29,900 11/22/2010 22,758 $1.31 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 Greenback Ln $100,000 2/25/2010 25,657 $3.90 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 100 Promenade Cir $5,000,000 4/27/2010 560,182 $8.93 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 10635 Fair Oaks Bl $350,000 9/3/2010 36,590 $9.57 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 1544 Hood Rd $368,000 2/19/2010 75,460 $4.88 as Receiver for East West Bank. Property was listed thru MLS and Loopnet. Buyer Average Commericial Cost $5.80 per SF

RESIDENTIAL LAND SALES Address Sale Price Sale Date $/SF Address Sale Price Sale Date 2100 6Th St $100,000 4/20/2010 $31.25 5411 Lambert Rd $180,000 12/2/2010 0 57Th St $75,000 6/11/2010 $9.26 8244 Wymark Dr $3,700,000 12/30/2010 2931 39Th St $30,000 6/28/2010 $5.30 9990 Winkle Cr $1,528,000 3/31/2010 3833 36Th St $20,000 12/6/2010 $3.83 11201 Ketcherside Ln $110,000 12/30/2010 4082 73Rd St $29,000 5/7/2010 $4.76 14059 Diabloview Ct $75,000 1/28/2010 4440 52Nd St $45,000 3/10/2010 $7.20 0 Twin Cities Rd $75,000 11/2/2010 4208 Sierra Vista Av $5,000 10/13/2010 $0.96 13067 Stockton Bl $675,000 9/29/2010 0 Enrico Bl $50,000 6/30/2010 $2.61 0 Kost Rd $102,500 7/7/2010 5115 64Th St $4,000 12/6/2010 $0.46 9768 Pringle Av $95,225 6/4/2010 29 Bunratty Ct $35,000 7/19/2010 $5.39 13459 John Rocha Cr $95,225 6/4/2010 978 Briarcrest Wy $60,000 3/23/2010 $6.56 13570 John Rocha Cr $95,225 6/4/2010 0 Pocket Rd $850,000 11/29/2010 $8.20 13500 John Rocha Cr $95,225 6/4/2010 7713 E Shore Dr $219,000 2/10/2010 $18.62 13444 John Rocha Cr $95,225 6/4/2010 6565 Lang Av $75,000 12/27/2010 $0.68 13472 John Rocha Cr $99,950 5/10/2010 0 Hing Av $10,000 4/14/2010 $0.54 13585 John Rocha Cr $99,950 3/15/2010 0 Citrus Av $20,000 8/27/2010 $2.99 13542 John Rocha Cr $99,950 1/19/2010 0 Citrus Av $19,000 8/10/2010 $2.84 13514 John Rocha Cr $99,950 1/15/2010 7419 Persimmon Av $200,000 8/4/2010 $3.18 712 Union St $35,000 3/3/2010 7471 Della Cr $75,000 12/29/2010 $10.34 708 Tyler Is Br Rd $52,500 10/13/2010 8596 Unsworth Av $230,000 5/7/2010 $3.52 0 Sorento Rd $45,000 10/15/2010 0 Birch Ranch Dr $225,000 12/2/2010 $1.08 8341 Nathalie Wy $60,000 5/3/2010 11867 Country Grdn Dr $1,470,000 6/3/2010 $173.99 8340 Nathalie Wy $58,000 4/9/2010 4831 Birch Valley Wy $2,441,000 12/30/2010 $3.79 8336 Nathalie Wy $58,000 3/29/2010 12295 El Portal Wy $2,144,000 5/28/2010 $5.15 7341 8Th St $112,000 8/19/2010 0 Mormon St $80,000 7/30/2010 $15.31 0 7Th Av $18,000 2/26/2010 659 Hancock Dr $55,000 11/17/2010 $6.65 637 O St $55,000 12/23/2010 801 Cristina Ct $67,000 12/28/2010 $2.93 0 Elkhorn Bl $40,000 12/6/2010 805 Cristina Ct $87,500 12/14/2010 $3.81 6740 18Th St $70,000 5/14/2010 1514 Gionata Wy $52,500 12/8/2010 $3.72 0 U St $590,000 8/16/2010 810 Cristina Ct $80,000 9/14/2010 $5.35 7720 Nelson Ln $50,000 12/20/2010 784 Lorena Ln $75,500 8/31/2010 $6.21 7129 Walnut Av $125,500 3/25/2010 0 Trowbridge Ct $198,000 4/12/2010 $8.93 231 E St $58,000 11/12/2010 107 Kemp Ct $150,000 9/21/2010 $19.13 0 Rio Linda Bl $87,000 1/12/2010 498 Listowe Dr $190,000 6/22/2010 $7.79 0 2Nd St $25,000 12/7/2010 729 Heritage Pl $245,000 1/28/2010 $17.32 340 Pinedale Av $27,000 5/19/2010 700 Glen Mady Wy $210,000 2/10/2010 $13.39 5041 Sully St $50,000 2/16/2010 1731 Lake Vista Wy $148,000 12/10/2010 $9.34 4320 Santa Ana Av $50,000 10/5/2010 1763 Barrhead Ct $185,000 5/6/2010 $7.15 855 Rio Robles Av $18,000 7/19/2010 539 Serpa Wy $172,000 3/25/2010 $7.64 0 Peerless Av $5,000 9/16/2010 1804 Ruan Ct $182,500 9/3/2010 $9.79 0 Telegraph Av $170,000 8/18/2010 414 Tobrurry Wy $150,000 7/25/2010 $7.00 148 Lost Creek Dr $155,000 4/5/2010 449 Serpa Wy $250,000 12/21/2010 $20.83 126 Flat Rock Dr $100,000 7/26/2010 365 Tobrurry Wy $122,000 10/21/2010 $4.90 164 Temperance Rv Ct $52,500 9/23/2010 369 Tobrurry Wy $130,000 9/30/2010 $4.54 5425 College Oak Dr $39,500 1/5/2010 335 Tobrurry Wy $130,000 4/20/2010 $6.70 5425 College Oak Dr $35,000 5/13/2010 264 Tobrurry Wy $148,000 7/28/2010 $8.65 0 Walnut Av $57,000 2/17/2010 323 Tobrurry Wy $160,000 2/5/2010 $8.37 5234 Bell Wood Wy $96,500 2/10/2010 12785 Thornberg Wy $262,000 12/22/2010 $3.90 1335 Grace Av $50,000 1/14/2010 10856 Wraysbury Wy $246,000 9/15/2010 $183.45 4337 Marysville Bl $20,000 7/12/2010 10820 Atherstone Dr $237,000 9/14/2010 $169.89 4024 Astoria St $35,000 6/15/2010 6442 Lago Cr $84,000 6/23/2010 $7.14 4332 Poseidon Ln $72,500 5/28/2010 6334 Cazador $25,000 4/6/2010 $7.23 0 Hope Ln $160,000 3/2/2010 0 Cottonwood Ln $300,000 9/7/2010 $0.52 4040 Braxton Ln $707,000 10/6/2010 7894 Iona Wy $216,000 2/19/2010 $5.61 6350 Mariposa Av $382,000 6/11/2010 0 Gerber Rd $362,500 11/12/2010 $0.60 8000 Sunset Av $200,000 10/14/2010 0 Gerber Rd $280,000 9/10/2010 $0.46 8261 Winding Wy $25,000 2/19/2010 8800 Bradshaw Rd $500,000 6/16/2010 $63.77 4350 Chicago Av $195,000 5/14/2010 8891 Cobble Crest Dr $1,840,000 3/31/2010 $8.22 51 Morey Av $500,000 7/27/2010 10651 Halfway Rd $66,000 5/24/2010 $0.82 3637 Presidio St $21,500 12/6/2010 0 Lee School Rd $143,000 8/10/2010 $0.70 0 South Av $6,000 3/10/2010 0 Simpson Ranch Ct $250,000 8/2/2010 $0.30 8672 Old Villa Ct $89,000 12/7/2010 0 Simpson Ranch Ct $188,000 4/22/2010 $0.23 3410 Montclaire St $130,000 9/7/2010 8900 Good Shepherd Ln $130,000 6/17/2010 $1.91 8178 Streng Av $375,000 1/14/2010 8920 Good Shepherd Ln $240,000 3/2/2010 $0.46 0 Bryan Wy $207,000 8/6/2010 0 Bradshaw Rd $280,000 1/15/2010 $1.35 3925 Hollister Av $121,900 6/30/2010 9135 Shire Oaks Ln $156,500 12/6/2010 $1.88 0 Fair Oaks Bl $91,500 2/11/2010 9136 Shire Oaks Ln $340,000 3/1/2010 $3.12 0 Sutter Hill Ln $25,000 4/23/2010 0 Meiss Rd $45,000 5/21/2010 $0.34 6148 Sutter Av $235,000 8/31/2010 0 Washington Av $50,000 10/20/2010 $3.83 6146 Sutter Av $98,000 4/30/2010 3136 Academy Wy $6,000 12/6/2010 $0.98 0 Fair Oaks Bl $100,000 5/6/2010 52 Morell Ct $79,000 12/23/2010 $1.27 8490 London Plain Ct $135,000 5/25/2010 0 Cottage Wy $30,000 10/19/2010 $3.34 8551 Heather Cross Wy $60,000 8/25/2010 6232 Gobernadores Ln $152,000 6/30/2010 $4.26 2741 Altos Av $15,000 10/14/2010 1235 Jacob Ln $150,000 6/30/2010 $9.44 1035 Sonoma Av $10,000 12/6/2010 1027 Opal Ln $12,500 5/21/2010 Average Residential Cost $10.02 per SF Average of Commercial and Residential $7.91 per SF Temporary Construction Easements (10%) Use for TCE Permanent Easement (50%) $0.79 $0.80 $3.96 per SF per year Use for Permanent Easement $4.00 per SF $/SF $0.13 $6.41 $179.45 $0.25 $1.90 $0.97 $1.22 $0.97 $1.35 $1.32 $1.11 $1.16 $1.16 $1.17 $1.32 $1.22 $1.22 $10.03 $2.68 $0.19 $6.63 $7.01 $6.88 $2.89 $1.17 $0.54 $0.53 $1.12 $2.28 $1.77 $2.32 $0.67 $0.21 $1.25 $1.24 $1.97 $1.01 $2.02 $0.36 $1.70 $13.46 $4.25 $3.75 $2.32 $2.05 $2.84 $13.03 $0.46 $1.70 $2.00 $4.76 $5.17 $3.16 $50.40 $4.69 $3.38 $4.54 $0.98 $3.53 $1.15 $7.05 $16.15 $18.20 $7.09 $3.33 $4.73 $1.18 $11.88 $10.97 $1.23 $7.08 $9.37 $1.86 $1.78 $1.91