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April 2016 - FINAL DRAFT pw://Carollo/Documents/Client/CA/Modesto/9704A00 - WW Collection/Deliverables/App Cover Pages.docx Wastewater Treatment Master Plan APPENDIX A – ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION TECHNICAL MEMORANDUM ---PAGE BREAK--- ---PAGE BREAK--- 2700 YGNACIO VALLEY ROAD, SUITE 300 • WALNUT CREEK, CALIFORNIA 94598 • P. [PHONE REDACTED] • F. [PHONE REDACTED] pw://Carollo/Documents/Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A/Appendix A.docx CITY OF MODESTO WASTEWATER COLLECTION SYSTEM MASTER PLAN TECHNICAL MEMORANDUM ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION DRAFT February 2016 This document is released for the purpose of information exchange review and planning only under the authority of Timothy J. Loper, April 26, 2016, State of California, PE No. 70847, Ryan F. Orgill, April 26, 2016, State of California, PE No. 75802. ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT i pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx CITY MODESTO, CALIFORNIA WASTEWATER COLLECTION MASTER PLAN TECHNICAL MEMORANDUM ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION TABLE OF CONTENTS Page No. 1.0 BACKGROUND 1 2.0 FLOW PROJECTIONS 1 3.0 CAPACITY EVALUATION 2 3.1 Collection System Capacity Improvements 5 3.2 Collection System Expansion to serve Future Growth 5 4.0 CAPITAL IMPROVEMENT PROGRAM 9 4.1 Recommended Projects 9 LIST OF TABLES Table 1 Alternative Existing and Build-Out Design Flows 2 Table 2 Alternative Land Use Proposed 7 Table 3 Alternative Land Use CSMP CIP 10 Table 4 Alternative Land Use Capital Cost Summary and Comparison 15 LIST OF FIGURES Figure 1 Proposed General Plan Land Use 3 Figure 2 Alternative Land Use Map 4 Figure 3 Build-out System Capacity 6 Figure 4 Collection System 16 Figure 5 CSMP CIP Cost By Project Category 17 ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 1 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Wastewater Collection System Master Plan ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION 1.0 BACKGROUND The City of Modesto (City) contracted with Carollo Engineers, Inc. (Carollo) to prepare a Wastewater Master Plan (Master Plan) for the City, which consists of a Wastewater Collection System Master Plan and a Wastewater Treatment Plant Master Plan. The assumptions used in the Master Plan are based on the proposed land use changes to the City’s General Plan Land Use diagram, which were adopted by the City Council on March 25, 2014. The proposed land use changes will be incorporated into a General Plan Amendment, which is currently in the process of being developed. Figure 1 shows the proposed March 15, 2014 land use diagram, which is the basis for the Master Plan wastewater flow projections. The City also developed an “alternative” proposed land use diagram, which was developed on July 11, 2014. Figure 2 shows the "alternative" land use diagram. Again, the Master Plan is based on the proposed General Plan Land Use Diagram that was adopted by the City Council on March 25, 2014. However, the City asked Carollo to perform an evaluation of the impacts to the wastewater collection system of the "alternative" land use diagram, and include the results of this evaluation as an appendix to the Master Plan. This Technical Memorandum (TM) summarizes the results of this analysis. The alternative land use includes some differences in the location and type of future development, and will therefore result in different build out flow projections for the City. The alternative land use incorporates a larger area to the west of the City and increases Village Residential, Business Park, and Business-Park-Commercial Land use. The primary objective of this TM is develop flow projections for the alternative land use, identify new sewer trunks to serve the alternative land use diagram, to identify any additional infrastructure improvements that would be necessary within the existing wastewater collection system, and to develop an estimate of the capital improvement costs associated with the alternative land use. 2.0 FLOW PROJECTIONS A summary of the existing and built out Average Dry Weather Flow (ADWF) and Peak Wet Weather Flow (PWWF) is presented in Table 1. As shown in Table 1, in comparison to the Master Plan, existing flows remain the same while future flow projections increase. The flow projections provided in Table 1 are based on the proposed General Plan and the alternative land use. Under the alternative land use, the build out ADWF is projected to be 36.9 mgd, compared to a build out projection of 34.4 mgd based on the proposed General Plan Land ---PAGE BREAK--- April 2016 - DRAFT 2 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Use. The PWWF is projected to be 82.6 mgd for the alternative land use, compared to 77.8 mgd for the proposed General Plan Land Use. The City’s peaking factors under the Alternative Land Use remain consistent with the Master Plan’s PWWF to ADWF ratio. Table 1 Alternative Existing and Build-Out Design Flows Wastewater Collection System Master Plan City of Modesto, California Flow Conditions Proposed General Plan Land Use (Master Plan Projections)(2) Alternative Land Use(3) ADWF (mgd) PWWF(1) (mgd) PWWF PF ADWF (mgd) PWWF(1) (mgd) PWWF PF Existing 21.4 54.2 2.53 21.4 54.2 2.53 Build-Out 34.4 77.1 2.24 36.9 82.6 2.24 Notes: PWWF projections assume that the City's storm drainage cross connections to the sanitary sewer system are removed. Based on the adopted March 25, 2014 Land Use Diagram Based on the alternative July 11, 2014 Land Use Diagram 3.0 CAPACITY EVALUATION As previously discussed, the existing flows in the collection system are identical in both the proposed General Plan Land Use and the Alternative Land Use. The results of the existing system capacity evaluation are the same as those identified in the Wastewater Collection System Master Plan, and will not be repeated in this TM. Therefore, only the results of the future collection system evaluation are presented. The collection system was evaluated to identify capacity deficiencies during at build-out of the Alternative Land Use service area. For this evaluation, it was assumed that existing deficiencies were mitigated as documented in the Master Plan, and storm drain cross connections were removed. Figure 3 shows the deficient pipelines and lift stations within the existing system for the build out condition of the Alternative Land Use diagram. The deficiencies shown on this figure are similar to the Master Plan, with some exceptions. The firm capacity of the Woodland lift Station has increased from 24.6 mgd to 25.9 mgd. Flow entering the 60-inch diameter pipeline (Project W-1) near the Sutter Plant has increased and reduced available capacity. The maximum flow depth has increased from 90-percent to approximately 96-percent capacity. The Ustick Trunk (Project U-1) will require a larger pipeline diameter to mitigate surcharging. The recommendation has increased from a 15-inch to a 24-inch diameter pipeline. The increase in flow is attribute to the additional residential growth in Area 10. ---PAGE BREAK--- KIERNAN AVE COVERT RD BACON RD BECKWITH RD NORTH AVE WOODLAND AVE MAZE BLVD CALIFORNIA AVE PARADISE RD WHITMORE AVE SHOEMAKE AVE BLUE GUM AVE KANSAS AVE STODDARD RD AMERICAN AVE TULLY RD MC HENRY AVE COFFEE RD OAKDALE RD ROSELLE AVE CLAUS RD LANGWORTH RD CARVER RD DALE RD PRESCOTT RD FINNEY RD ALBERS RD HWY 99 HWY 99 HWY 99 BRIGGSMORE AVE 9TH ST SYLVAN AVE PELANDALE AVE BANGS AVE Sutter Plant pw://Carollo/Documents/Client/CA/Modesto/9704A00 - WW Collection/Data/MXDs/Fig 2_2.mxd PROPOSED GENERAL PLAN LAND USE FIGURE 1 CITY OF MODESTO WASTEWATER COLLECTION SYSTEM MASTER PLAN ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION Legend Land Use Residential Village Residential Downtown Commercial Regional Comercial Business-Commercial-Residential Business Park Industrial Mixed Use Open Space City Limits Sphere of Influence Existing North Ceres Service Area Future North Ceres Service Area Roads O 0 1 2 Miles Beard Industrial Park Empire North Ceres *Based on the adopted March 22, 2014 Land Use Diagram ---PAGE BREAK--- ---PAGE BREAK--- KIERNAN AVE COVERT RD BACON RD BECKWITH RD NORTH AVE WOODLAND AVE MAZE BLVD CALIFORNIA AVE PARADISE RD WHITMORE AVE SHOEMAKE AVE BLUE GUM AVE KANSAS AVE STODDARD RD AMERICAN AVE TULLY RD MC HENRY AVE COFFEE RD OAKDALE RD ROSELLE AVE CLAUS RD LANGWORTH RD CARVER RD DALE RD PRESCOTT RD FINNEY RD ALBERS RD HWY 99 HWY 99 HWY 99 BRIGGSMORE AVE 9TH ST SYLVAN AVE PELANDALE AVE BANGS AVE Sutter Plant pw://Carollo/Documents/Client/CA/Modesto/9704A00 - WW Collection/Data/MXDs/Fig 2_2.mxd ALTERNATIVE LAND USE MAP FIGURE 2 CITY OF MODESTO WASTEWATER COLLECTION SYSTEM MASTER PLAN ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION Legend Land Use Residential Village Residential Downtown Commercial Regional Comercial Business-Commercial-Residential Business Park Industrial Mixed Use Open Space City Limits Sphere of Influence Existing North Ceres Service Area Future North Ceres Service Area Roads O 0 1 2 Miles Beard Industrial Park Empire North Ceres *Based on the July 11, 2014 Alternative Land Use Diagram ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 5 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx 3.1 Collection System Capacity Improvements Figure 3 illustrates the improvements recommended to mitigate capacity deficiencies and projects to accommodate future growth under the alternative land use. Projects that are identical for both the Master Plan (proposed General Plan Land Use) scenario and the Alternative Land Use scenario are shown on Figure 3, however, the descriptions of these projects have not been repeated in this TM. The following outlines the required improvements that are associated with the Alternative Land Use and not identified within the Master Plan. Detailed information for each improvement is provided in Table 2 and discussed below. 3.1.1 Area 1 West Trunk (Project W-1): At build-out of Area 1, the increased PWWF from the new growth and infill will cause flow levels in the lower reach of the West Trunk to exceed the maximum flow depth criteria at approximately 96 percent capacity, creating a bottle necking effect upstream and causing a segment of the 54-inch to surcharge. The deficient pipelines extend 5,300 feet and range from 54-inch to 60-inch diameter. To increase capacity within this reach of the West Trunk, a parallel 48-inch diameter pipeline is recommended. This parallel pipeline will extend 5,200 feet from Carpenter Road to the Sutter Plant. This is a long term project which depends on growth in Area 1. Woodland Lift Station (LS 39): The existing firm capacity of the Woodland Lift station, located near Woodland Avenue and Poust Road intersection, lack sufficient capacity to convey build-out PWWF. The Firm Capacity will be increased from 20.9 mgd to 25.9 mgd. 3.1.2 Area 10 Ustick Trunk (Project U-1): The trunk from Whitmore Avenue to Imperial Avenue surcharges due to new growth within the Whitmore-Carpenter and Fairview CPDs. The 12-inch diameter pipeline will be replaced with 2,100 feet of 24-inch diameter pipeline. 3.2 Collection System Expansion to serve Future Growth The following summarizes the recommendations for new trunk sewers and lift stations to serve future users under the Alternative Land Use. Similar to the previous section, the following outlines improvements required to accommodate new growth associated with the Alternative land Use and not identified in the Master Plan. Detailed information for each improvement is provided in Table 2 and discussed below. ---PAGE BREAK--- ---PAGE BREAK--- R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LSR7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS 3 Ú 3 Ú R7 LS KIERNAN AVE COVERT RD BACON RD BECKWITH RD NORTH AVE WOODLAND AVE MAZE BLVD CALIFORNIA AVE PARADISE RD WHITMORE AVE SHOEMAKE AVE BLUE GUM AVE KANSAS AVE STODDARD RD AMERICAN AVE TULLY RD MC HENRY AVE COFFEE RD OAKDALE RD ROSELLE AVE CLAUS RD LANGWORTH RD CARVER RD DALE RD PRESCOTT RD FINNEY RD ALBERS RD ?Î 21'' 15'' 21'' 45'' 18'' 12'' 10'' 12'' 10'' 10'' 60'' 33'' 10'' 30'' 48'' 30'' 10'' 16'' 60'' 24'' 10'' 30'' 10'' 33'' 18'' 12'' 30'' 10'' 54'' 10'' 10'' 27'' 18'' 10'' 12'' 26'' 18'' 12'' 10'' 24'' 12'' 21'' 15'' 10'' 10'' 18'' 16'' 21'' 12'' 18'' 15'' 10'' 45'' 18'' 16'' 66'' 12'' 39'' 33'' 12'' 15'' 15'' 12'' 33'' 36'' 27'' 36'' 24'' 12'' 36'' 27'' 51'' 10'' 30'' 24'' 12'' 39'' 12'' 24'' 10'' 10'' 24'' 15'' 10'' 21'' 15'' 12'' 12'' 15'' 18'' 30'' 12'' 10'' 12'' 33'' 15'' 12'' 12'' 10'' 10'' 54'' 12'' 15'' 10'' 15'' 16'' 15'' 24'' 15'' 12'' 15'' 15'' 30'' 27'' 12'' 30'' 48'' 36'' 10'' 21'' 18'' 33'' 18'' 10'' 10'' 10'' 18'' 30'' 27'' 24'' 42'' 27'' 60'' 27'' 24'' 48'' 30'' 24'' 10'' 39'' 27'' 18'' 60'' Woodland BUILD-OUT COLLECTION SYSTEM CAPACITY DEFICIENCIES FIGURE 3 CITY OF MODESTO WASTEWATER COLLECTION SYSTEM MASTER PLAN ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION Legend R7 LS Future Lift Stations Deficiencies Future System Deficiencies R7 LS Lift Station Sewer Main Tributary Areas Area 1 Area 2 Area 3 Area 4 Area 5 Area 6 Area 7 Area 8/Northern Ceres Area 9 Area 10 O 0 4,000 8,000 Feet Beard Industrial Park Empire North Ceres ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 7 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Table 2 Alternative Land Use Proposed Improvements Wastewater Collection System Master Plan City of Modesto, California Project Number Project Description/Street Purpose Improvement Category Ex. Size/ Diam. (in)(1) New Size/Diam. (in)(1) Replace/ New Length (ft) Future System Improvements Area 1 West Trunk W-1 Gravity Pipeline Carpenter Road to Sutter Plant Build-out PWWF causes the lower reach of the West Trunk to exceed the maximum depth criteria at approximately 96-percent capacity. Capacity - 48 New 5,200 W-3 Gravity Pipeline Undeveloped Area These improvements are recommended to service future growth within the Beckwith- Dakota and College West CPDs. New Growth - 18 New 4,000 W-4 Force Main North Avenue These improvements are recommended to service future growth within the Beckwith- Dakota CPD. New Growth - 8 New 8,300 W-6 Gravity Pipeline Undeveloped Land This improvement is recommended to service future growth within the Highway 132 CPD. New Growth - 10 New 2,000 W-7 Gravity Pipeline Undeveloped Land This improvement is recommended to service future growth within the Paradise- Carpenter CPD. New Growth - 15 New 2,000 W-8 Gravity Pipeline Vineyard Haven This improvement is recommended to service future growth within the Paradise- Carpenter CPD. New Growth - 15 New 2,000 W-9 Gravity Pipeline Carpenter Road and Paradise Road This improvement is recommended to service infill as the sewer service area extends to include county islands. New Growth - 10 New 2,900 LS 64 Dakota Lift Station Dakota Road and Beckwith Court The proposed lift station is necessary due to the extensive length, minimum slope of the proposed pipelines, and flat topography of the area. New Growth - 2.7 mgd New - LS 39 Woodland Lift Station Woodland Avenue and Poust Road It is proposed that the firm capacity be increased to 25.9 mgd from its current capacity of 20.9 mgd to meet future Capacity 27.4 mgd 32.4 mgd Expand - Area 10 Ustick Trunk U-1 Gravity Pipeline Ustick Road At build-out of Area 10, the PWWF from new growth will cause the Ustick Trunk to surcharge. Capacity 12 24 Replace 2,100 U-2 Gravity Pipeline Whitmore Avenue This group of improvements will service commercial and residential growth to the southwest within the Whitmore-Carpenter and Fairview CPD. New Growth - 21 New 2,000 U-3 Force Main Whitmore Avenue This group of improvements will service commercial and residential growth to the southwest within the Whitmore-Carpenter and Fairview CPD. New Growth - 8 New 2,500 U-4 Gravity Pipeline Whitmore Avenue This group of improvements will service commercial and residential growth to the southwest within the Whitmore-Carpenter and Fairview CPD. New Growth - 18 New 6,000 LS 62 Whitmore/Carpenter Lift Station Whitmore Avenue The proposed lift station is necessary due to the extensive length, minimum slope of the proposed pipelines, and flat topography of the area. New Growth - 4.4 mgd New - Notes: Lift station capacities refer to the total capacity unless noted otherwise. ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 8 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx 3.2.1 Area 1 West Trunk (Projects W-3 through W-4 and Dakota Avenue LS 64): These projects are recommended to serve future growth within the Beckwith-Dakota and College West Comprehensive Planning District (CPD). A new lift station and force main will be required. The force main will convey flow from the lift station to a new subtrunk and connect to the existing West Trunk on the west side of Highway 99. Project W-3 consists of 4,000 feet of 18-inch diameter pipeline from North Avenue to McDonald Avenue, where it connects to the West Trunk. Project W-4 consists of 8,300 feet of 8-inch diameter force main to connect LS 64 to project W-3. The force main will be aligned down Dakota Avenue and North Avenue. Based on topography and the invert elevation of the existing collection system, a lift station is necessary. The Dakota Avenue Lift station (LS 64) will have a firm capacity of 1.35 mgd. West Trunk (Project W-6): This project consists of 2,000 feet of 10-inch diameter pipeline and is located in undeveloped land. The project will extend service to the Highway 132 CPD and serve Business Park development. West Trunk (Project W-7): This sewer trunk extension will provide service to future Village Residential within the Paradise-Carpenter CPD. This project consists of 2,000 feet of 15-inch diameter pipeline and is located in undeveloped land. West Trunk (Project W-8): This project consists of 2,000 feet of 15-inch diameter pipeline and is located in Vineyard Haven. This project will extend service to the Paradise-Carpenter CPD and serve Village Residential development. West Trunk (Project W-9): This project consists of 2,900 feet of 10-inch diameter pipeline in Carpenter Road and Paradise Road. The Project will extend the area served by the West Trunk to include existing county islands in the southwest portion of the city. This project is the same as W-7 within the Master Plan and is included in this report as the project number has changed in Figure 3. 3.2.2 Area 10 Ustick Sub-Trunks and Lift Station (Project U-2 through U-4 and LS 62): This group of improvements will serve future commercial and residential growth within the Whitmore-Carpenter and Fairview CPD’s. This project consists of three segments and a lift Station. – Segment U-2 consists of 2,000 feet of 21-inch diameter in Whitmore Avenue and will connect to the existing collection system in Ustick Road. ---PAGE BREAK--- April 2016 - DRAFT 9 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx – Segment U-3 consists of 2,500 feet of 8-inch force main in Whitmore Avenue. The force main will allow the proposed 21-inch diameter sewer (Segment U-2) to connect with the existing pipeline in Ustick Road. – Segment U-4 consists of 6,000 feet of 18-inch diameter pipeline. The proposed pipeline begins in undeveloped land and continues under Whitmore Avenue, where it terminates at LS 62. – The Whitmore and Carpenter Lift Station (LS 62) will have a firm capacity of 2.2 mgd to convey future PWWF. 4.0 CAPITAL IMPROVEMENT PROGRAM This section presents the capital improvement plan (CIP) for the wastewater collection system under the Alternative Land Use. The CIP includes a summary of the recommended improvements and provides a comparison to the Master Plan. 4.1 Recommended Projects Table 3 summarizes the recommended projects for the CIP. Cost estimates were developed based on unit costs from the Master Plan. ---PAGE BREAK--- April 2016 - DRAFT 10 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Table 3 Alternative Land Use CSMP CIP Wastewater Collection System Master Plan City of Modesto, California Project Number Project Description/Street Purpose Improvement Category Ex. Size/ Diam. (in)(6) New Size/ Diam. (in)(6) Replace/ New Length (ft) Total Project Cost(1) Existing System Improvements Area 1 West Trunk LS 19 - Hahn Hahn Lift Station Honey Creek Road and Nightingale Drive This improvement will increase firm capacity from 0.65 mgd to 1.3 mgd to meet existing and future Capacity 0.6 mgd 2.6 mgd Replace - $1,791,000 A-3 Gravity Pipeline(2) Roseburg/Haney Avenue Inspections along this reach indicate roots have penetrated through the RCP. This Pipeline is recommended for urgent repair. The method of rehabilitation will involve cured-in-place pipe (CIPP) lining. Rehabilitation 18 - RCIPP 3,000 $619,000 C-1 Gravity Pipeline(2) Woodland Avenue Pipeline aggregate along this reach is missing and protruding. The method of rehabilitation will involves sliplining. Rehabilitation 54/60 - RSliplining 24,900 $16,016,000 Rumble Trunk LS 30 - Rumble Rumble Lift Station Rumble Road near Bay Lane This improvement will increase firm capacity from 1.37 mgd to 2.33 mgd to meet existing and future Capacity 1.4 mgd 3.5 mgd Replace - $2,280,000 Area 2 Emerald Trunk B-2 Gravity Pipeline(2) Mercy Avenue Inspections along this reach have observed visible reinforcement with some areas of projecting rebar. The method of rehabilitation will involve CIPP lining and sliplining. Rehabilitation 18/27/54 - RCIPP 7,500 $2,176,000 D-2 Gravity Pipeline(2) Briggsmore Ave/Tully Rd The pipeline coating has deteriorated and is susceptible to corrosion. Rehabilitation 30 - CIPP 110 $39,000 Area 3 Sutter Trunk A-2 Gravity Pipeline(2) Pipelines entering Sutter Plant Pipeline reinforcements within the Sutter reach are corroded and have segments of the wall missing. PoleCam data on the South Trunk identified pipelines with moderate to severe conditions. The South Trunk Siphon was included in this project for budgeting purposes. Rehabilitation 24/30 - CIPP 2,200 $726,000 S-4a Gravity Pipeline Highway 99 This improvement will increase reliability by constructing a parallel 16-inch diameter trunk under Highway 99. Reliability - 16 New -400 $373,000 C-2/S-4b Gravity Pipeline Highway 99 This improvement will rehabilitate the existing 16-inch diameter trunk. Rehabilitation 16 - Rehab -400 $113,000 River Trunk RT-1 Gravity Pipeline(3) Tuolumne Avenue This improvement will provide gravity conveyance of the River Trunk flows from the discharge of the River Trunk force mains to the Sutter Plant. Capacity - 48 New -2,300 $3,211,000 RT-2 Gravity Pipeline(3) Colorado Avenue This improvement will provide gravity conveyance of the River Trunk flows from the discharge of the River Trunk force mains to the Sutter Plant. Capacity - 54 New -4,000 $8,648,000 RT-3 Gravity Pipeline(3) Colorado Avenue This improvement will provide gravity conveyance of the River Trunk flows from the discharge of the River Trunk force mains to the Sutter Plant. Capacity - 60 / 72/84 New -3,300 $7,442,000 RT-4 Gravity Pipeline(3) Tuolumne Boulevard This improvement will provide peak wet weather diversion for the existing Sutter Trunk. Capacity - 21 New -1,300 $1,137,000 RT-5 Force Main(3) Tuolumne Boulevard This improvement will add force mains that allow the system to maintain flushing velocities through a wide range of flows; these force mains will convey flows from the River Trunk Pump Station. Capacity - 30 & 42 New -2,600 $5,818,000 RT-6 Gravity Pipeline(3) Beard Brook North Gravity Alignment This improvement will extend the Dry Creek crossing that conveys flows to the River Trunk Pump Station. Capacity - 48 New -3,900 $16,967,000 RT-7 Gravity Pipeline(3) B Street This improvement will reroute flows to the River Trunk Pump Station. Capacity - 36 & 48 New -1,500 $2,071,000 RT-8 Force Main/ Gravity Pipeline(3) Open Space This improvement will convey flows from the new Shackelford PS to the new River Trunk in Colorado. Capacity - 14 & 18 New -3,200 $1,944,000 ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 11 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Table 3 Alternative Land Use CSMP CIP Wastewater Collection System Master Plan City of Modesto, California Project Number Project Description/Street Purpose Improvement Category Ex. Size/ Diam. (in)(6) New Size/ Diam. (in)(6) Replace/ New Length (ft) Total Project Cost(1) RT-9 Gravity Pipeline(3) Sutter Avenue This improvement will rehabilitate the Sutter Ave Trunk based on the results of the condition assessment. Rehabilitation - 24 New 1,300 $533,000 RT-10 Gravity Pipeline(3) Open Space This improvement will rehabilitate a segment of the River Trunk based on the results of the condition assessment. Rehabilitation - 48/60/66 New 15,000 $14,069,000 RT-11 River Bank Armament(3) Tuolumne River Bank This improvement will provide armoring for the riverbank to prevent future erosion and exposure of the CSL and River Trunk. Reliability - - New - $4,668,000 RT-12 CSL Diversion Structures(3) North or Sutter Plant This improvement will provide a contingency to divert flows between the CSL and River Trunk. Reliability - - New - $560,000 PS - Shackelford Shackelford Pump Station(3) East of Crows Landing This improvement will eliminate the siphon below the Tuolumne River. Capacity - 4.2 mgd New - $2,989,000 PS - River Trunk River Trunk Pump Station(3) Morton Boulevard This improvement will eliminate the River Trunk inverted siphon and the associated issues. Capacity - 54.5 mgd New - $33,483,000 Area 4 Downtown Trunks DT-1 Gravity Pipeline J Street The trunk in J Street exceeds the maximum d/D criteria under PWWF, causing the existing 12-inch pipeline to surcharge; replacing the pipe will increase capacity. Capacity 12 15 Replace 2,400 $800,000 DT-2 Gravity Pipeline Kimble Street and Floto Street The existing 10-inch diameter pipelines exceed the maximum d/D criteria under PWWF at approximately 90 percent capacity; replacing these pipes will increase capacity. Capacity 10 12 Replace 1,000 $265,000 C-3 Gravity Pipeline(2) 9th Street Inspections along this reach have exposed missing aggregate, visible reinforcement and deterioration of the concrete walls. The method of rehabilitation will involve CIPP lining. Rehabilitation 27 - RCIPP 3,300 $1,037,000 D-1 Gravity Pipeline(2) 12th St./Morton Blvd Aggregate and missing segments of the interior wall were observed below the flow line, which indicates the corrosion is due to chemicals within the wastewater. The method of rehabilitation will involve CIPP lining. Rehabilitation 21/24/27 - RCIPP 1,800 $553,000 Area 5 Santa Rosa Trunk SR-4 Gravity Pipeline Coffee Road The existing 10-inch diameter pipelines in Coffee Road exceed the maximum d/D criteria and surcharge under PWWF; replacing these pipes will increase capacity. Capacity 10 15 Replace 1,600 $533,000 SR-6 Gravity Pipeline Kimble Street and Floto Street This improvement will rehabilitate the segment of the pipe that is over 50 years old and is deteriorated to the point that its structural integrity is compromised. Rehabilitation 18 - Rehab 1,000 $358,000 Rose and Celeste Trunk A-1 Gravity/Force Main(2) Scenic Dr/Oregon Dr The project includes rehabilitation gravity pipelines and the 14-inch diameter force main extending from Thousand Oaks Lift Station. Pipeline conditions range from severe to moderate. Urgent repairs are recommended where a void and corroded reinforcements have been observed. The method of rehabilitation will involve CIPP lining. Rehabilitation 16/18/24/30 RCIPP 8,800 $2,631,000 LS 29 - Rose & Celeste Rose & Celeste Lift Station Rose Avenue and Celeste Drive This improvement will increase the firm capacity from 0.86 mgd to 1.3 mgd to meet existing and future Capacity 0.9 mgd 2.6 mgd Replace - $1,791,000 Area 6 Empire Trunk EM-1 Gravity Pipeline(4) MYosemite Road The existing pipelines in McClure Road exceed the maximum d/D criteria under PWWF; replacing these pipes will increase capacity. Capacity 10 15 Replace 200 In Progress EM-2 Gravity Pipeline(4) Garner Road This improvement will add a relief pipeline to alleviate surcharging within the Empire Trunk along Yosemite Boulevard and McClure Road. Capacity - 18 New 3,300 In Progress EM-3 Gravity Pipeline Hoover Avenue The existing pipelines exceed the maximum d/D under PWWF at approximately 95 percent capacity; replacing these pipes will increase capacity. Capacity 10 12 Replace 1,800 $476,000 EM-4 Gravity Pipeline Benson Avenue The 15-inch diameter trunk in Benson Avenue exceeds the d/D criteria under PWWF at approximately 93 percent capacity; replacing the trunk will increase capacity. Capacity 15 18 Replace 1,400 $507,000 LS 03 - Benson Benson Lift Station Benson Avenue This improvement will increase the firm capacity from 0.22 mgd to 1.3 mgd to meet existing and future Capacity 0.2 mgd 2.6 mgd Replace - $1,791,000 ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 12 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Table 3 Alternative Land Use CSMP CIP Wastewater Collection System Master Plan City of Modesto, California Project Number Project Description/Street Purpose Improvement Category Ex. Size/ Diam. (in)(6) New Size/ Diam. (in)(6) Replace/ New Length (ft) Total Project Cost(1) Sonoma/Lakewood Trunk LS 31 - Scenic Scenic Lift Station(4) Scenic Drive This improvement will increase the firm capacity from 2.3 mgd to 18.4 mgd to meet existing and future Capacity 13.0 mgd 25.6 mgd Replace - In Progress Area 8 Ceres Trunk CT-1 Gravity Pipeline(4) Parallel to Tuolumne River This project rehabilitates the oldest and most deteriorated segment of the Ceres Trunk. Rehabilitation 18/21/24 - Replace 2,900 In Progress C-2a Gravity Pipeline(4) Highway 99 crossing This improvement will increase reliability by constructing a parallel 24-inch diameter trunk under Highway 99. Reliability - 24 New 1300 In Progress C-2b Gravity Pipeline(4) Highway 99 crossing This improvement will rehabilitate the existing 24-inch diameter trunk. Rehabilitation -24 24 New 1300 In Progress Area 9 River Trunk Tributary B-1 Gravity Pipeline(2) Spokane St/Cascade Ave Inspections along this reach have observed missing aggregate and visible reinforcement. The method of rehabilitation will involve CIPP lining. Rehabilitation 30 - Rehab 5,600 $1,963,000 City-Wide SDR Storm Drain Various Locations This improvement will remove storm drain connections from the sewer collection system. Storm Drain Removal - - - - $17,040,000 R&R Rehabilitation & Replacement Various Locations These improvements will help carry out the Small and Large Diameter Rehabilitation and Replacement Program. Rehabilitation - - - - $17,720,000 Existing Improvements Cost Estimate $175,138,000 Future System Improvements Area 1 West Trunk W-1 Gravity Pipeline Carpenter Road to Sutter Plant Build-out PWWF causes the lower reach of the West Trunk to exceed the maximum depth criteria at approximately 96 percent capacity. Capacity - 48 New 5,200 $4,664,000 W-3 Gravity Pipeline Undeveloped Area These improvements are recommended to service future growth within the Beckwith- Dakota and College West CPDs. New Growth - 18 New 4,000 $1,450,000 W-4 Force Main North Avenue These improvements are recommended to service future growth within the Beckwith- Dakota and College West CPDs. New Growth - 8 New 8,300 $2,023,000 W-6 Gravity Pipeline Undeveloped Land This improvement is recommended to service future growth within the Highway 132 CPD. New Growth 10 New 2,000 $445,000 W-7 Gravity Pipeline Undeveloped Land This improvement is recommended to service future growth within the Paradise- Carpenter CPD. New Growth - 15 New 2,000 $666,000 W-8 Gravity Pipeline Vineyard Haven This improvement is recommended to service future growth within the Paradise- Carpenter CPD. New Growth - 15 New 2,000 $666,000 W-9 Gravity Pipeline Carpenter Road and Paradise Road This improvement is recommended to service infill as the sewer service area extends to include county islands. New Growth - 10 New 2,900 $645,000 LS # 64 Dakota Lift Station Dakota Road and Beckwith Court The proposed lift station is necessary due to the extensive length, minimum slope of the proposed pipelines, and flat topography of the area. New Growth - 2.7 mgd New - $1,843,000 LS # 39 Woodland Lift Station(5) Woodland Avenue and Poust Road It is proposed that the firm capacity be increased to 25.9 mgd from its current capacity of 20.9 mgd to meet future Capacity 27.4 mgd 32.4 mgd Expand - $1,293,000 ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 13 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Table 3 Alternative Land Use CSMP CIP Wastewater Collection System Master Plan City of Modesto, California Project Number Project Description/Street Purpose Improvement Category Ex. Size/ Diam. (in)(6) New Size/ Diam. (in)(6) Replace/ New Length (ft) Total Project Cost(1) Rumble Trunk R-1 Gravity Pipeline Claremount Avenue and Maud Kump Terrace This reach of the Rumble Trunk experiences flow depths in excess of the maximum d/D at approximately 90 percent capacity during replacing the trunk will increase capacity. Capacity 21 24 Replace 5,100 $2,470,000 R-2 Gravity Pipeline McHenry Avenue This sewer trunk extension will provide service to future development in the Pelandale/McHenry CPD. New Growth - 10 New 900 $200,000 Dale Trunk D-1 Gravity Pipeline Undeveloped Area These improvements are recommended to service future growth within the Kiernan- Carver and Kiernan-Carver North CPDs. New Growth - 15 New 1,200 $400,000 D-2 Force Main Undeveloped Area These improvements are recommended to service future growth within the Kiernan- Carver and Kiernan-Carver North CPDs. New Growth - 6 New 2,600 $621,000 D-3 Gravity Pipeline Chapman Road These improvements are recommended to service future growth within the Kiernan- Carver and Kiernan-Carver North CPDs. New Growth - 12 New 1,700 $450,000 D-4 Gravity Pipeline Chapman Road These improvements are recommended to service future growth within the Kiernan- Carver and Kiernan-Carver North CPDs. New Growth - 10 New 2,200 $489,000 D-5 Gravity Pipeline Undeveloped Area These improvements are recommended to service future growth within the Kiernan- Carver and Kiernan-Carver North CPDs. New Growth - 8 New 1,500 $267,000 LS # 60 Chapman Lift Station Chapman Road This improvement will add a lift station due to the area’s flat topography and the extensive length and minimum slope of the proposed pipelines. New Growth - 1.6 mgd New - $1,276,000 North Trunk Extension N-1 Gravity Pipeline Bangs Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 27 New 2,800 $1,524,000 N-2 Gravity Pipeline Bangs Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 24 New 6,100 $2,954,000 N-3 Gravity Pipeline Bangs Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 21 New 1,600 $676,000 N-4 Gravity Pipeline Bangs Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 18 New 3,100 $1,123,000 N-5 Gravity Pipeline Bangs Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 15 New 2,400 $800,000 N-6 Gravity Pipeline Tully Road and Pelandale Avenue Future development within the northern portion of the City will require the completion of a trunk sewers to serve customers. New Growth - 10 New 800 $179,000 N-7 Gravity Pipeline American Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 15 New 3,100 $1,034,000 N-8 Gravity Pipeline Kiernan Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 10 New 5,600 $1,246,000 N-9 Gravity Pipeline Kiernan Avenue Future development within the northern portion of the City will require the construction of several trunk sewers to serve customers. New Growth - 8 New 6,300 $1,116,000 LS 59 Pelandale Lift Station Pelandale Avenue This improvement will add a lift station because of the area’s flat topography and the extensive length and minimum slope of the proposed pipelines. New Growth - 0.3 mgd New - $645,000 LS 65 Kiernan Lift Station Kiernan Avenue and Carver Road This improvement will add a lift station because of the area’s flat topography and the extensive length and minimum slope of the proposed pipelines. New Growth - 0.5 mgd New - $738,000 Area 3 Sutter Trunk S-1 Gravity Pipeline Jefferson Street The trunk in Jefferson Avenue exceeds the d/D criteria at approximately 89 percent capacity; Since the upstream and pipelines have steeper slopes, they were not identified as capacity deficient. Capacity 16 18 Replace 760 $275,000 ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 14 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Table 3 Alternative Land Use CSMP CIP Wastewater Collection System Master Plan City of Modesto, California Project Number Project Description/Street Purpose Improvement Category Ex. Size/ Diam. (in)(6) New Size/ Diam. (in)(6) Replace/ New Length (ft) Total Project Cost(1) Area 6 Sonoma Trunk Extension SO-1 Gravity Pipeline Undeveloped Area This group of improvements is recommended to service future growth within the Roselle-Claribel CPD. New Growth - 24 New 3,300 $1,597,000 SO-2 Gravity Pipeline Undeveloped Area This group of improvements is recommended to service future growth within the Roselle-Claribel CPD. New Growth - 18 New 2,600 $943,000 SO-3 Gravity Pipeline Undeveloped Area This group of improvements is recommended to service future growth within the Roselle-Claribel CPD. New Growth - 15 New 2,800 $933,000 SO-4 Gravity Pipeline Undeveloped Area This group of improvements is recommended to service future growth within the Roselle-Claribel CPD. New Growth - 8 New 3,100 $549,000 LS 61 Wood Sorrel Lift Station North of Wood Sorrel Drive and Sylvan Avenue This improvement will add a lift station due to the area’s flat topography and the extensive length and minimum slope of the proposed pipelines. New Growth - 0.1 mgd New - $582,000 Lakewood Trunk Extension L-1 Gravity Pipeline Litt Road This group of improvements will service residential and business-commercial- residential growth to the east within the Roselle-Claribel CPD. New Growth - 18 New 900 $327,000 L-2 Gravity Pipeline Litt Road This group of improvements will service residential and business-commercial- residential growth to the east within the Roselle-Claribel CPD. New Growth - 15 New 1,700 $567,000 L-3 Gravity Pipeline Litt Road This group of improvements will service residential and business-commercial- residential growth to the east within the Roselle-Claribel CPD. New Growth - 12 New 800 $211,000 L-4 Gravity Pipeline Plainview Road This group of improvements will service residential and business-commercial- residential growth to the east within the Roselle-Claribel CPD. New Growth - 10 New 3,000 $668,000 L-5 Gravity Pipeline Claus Road This group of improvements will service business, commercial, and residential growth within the Village One CPD. New Growth - 8 New 300 $54,000 L-6 Gravity Pipeline Merle Ave This group of improvements will service business, commercial, and residential growth within the Village One CPD. New Growth - 10 New 400 $89,000 LS 67 Litt Lift Station Litt Road This improvement will add a lift station due to the area’s flat topography and the extensive length and minimum slope of the proposed pipelines. New Growth - 1.3 mgd New - $1,118,000 Area 10 Ustick Trunk U-1 Gravity Pipeline Ustick Road At build-out of Area 10, the PWWF from new growth will cause the Ustick Trunk to surcharge. Capacity 12 24 Replace 2,100 $1,017,000 U-2 Gravity Pipeline Whitmore Avenue This group of improvements will service commercial and residential growth to the southwest within the Whitmore-Carpenter and Fairview CPD. New Growth - 21 New 2,000 $845,000 U-3 Force Main Whitmore Avenue This group of improvements will service commercial and residential growth to the southwest within the Whitmore-Carpenter and Fairview CPD. New Growth - 8 New 2,500 $609,000 U-4 Gravity Pipeline Whitmore Avenue This group of improvements will service commercial and residential growth to the southwest within the Whitmore-Carpenter and Fairview CPD. New Growth - 18 New 6,000 $2,174,000 LS 62 Whitmore/Carpenter Lift Station Whitmore Avenue The proposed lift station is necessary due to the extensive length, minimum slope of the proposed pipelines, and flat topography of the area. New Growth - 4.4 mgd New - $2,797,000 Future Improvements Cost Estimate $47,258,000 Total Capital Improvement Cost Estimate 222,396,000 Notes: Costs are provided in millions of dollars as present value based on an ENR CCI number of 10,037, which corresponds with the 20-City Average Index in July 2015. Costs are not escalated to future years. Total project costs include a 25 percent estimating contingency and a 30 percent allowance for engineering, legal, and administrative costs. Costs are provided in millions of dollars as present value based on an ENR CCI number of 11,155, which corresponds with San Francisco Bay Area Index in July 2015. Costs are not escalated to future years. Total project costs include a 25 percent estimating contingency and a 30 percent allowance for engineering, legal, and administrative costs. Cost estimates are from the River Trunk Realignment, Beard Brook Siphon, and Cannery Segregation Line Improvement Project PDR. The project’s cost is not included in the CIP because the improvement is currently in progress. The cost for the Woodlake Lift Station is based on the 2007 Master Plan and was escalated to reflect the most probable current cost. Lift station capacities refer to the total capacity unless otherwise noted. ---PAGE BREAK--- ---PAGE BREAK--- April 2016 - DRAFT 15 pw:\\Carollo/Documents\Client/CA/Modesto/9704A00 - WW Collection/Deliverables/Appendices/A\Appendix A.docx Cost per project category are summarized in Table 4 and compared to the Master Plan’s CIP. As shown, the costs deviate under Capacity Improvements by 0.4% and new growth improvements by approximately 12%. The increase to capacity improvements is attributed to U-1 and the larger diameter size, while new growth costs are escalated due to the land use expansion on the West side. Figure 4 is a graphical distribution of the costs per category. Table 4 Alternative Land Use Capital Cost Summary and Comparison Wastewater Collection System Master Plan City of Modesto, California Facility Type Master Plan Capital Cost Alternative Land Use Capital Cost Capacity Improvements $103.3 $103.7 New Growth Improvements $33.2 $37.5 R&R Improvements $58.6 $58.6 Reliability Improvements $5.6 $5.6 Storm Drain Removal $17.0 $17.0 Total $217.7 $222.4 Note: Costs are provided in millions of dollars as present value. ---PAGE BREAK--- ---PAGE BREAK--- 3 Ú 3 Ú R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LSR7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LS R7 LSR7 LS R7 LS R7 LS R7 LS R7 LS R7 LS 12'' 15'' 18'' 21'' 15'' 24'' 10'' 10'' 12" 24'' 21'' 15'' Woodland LS 39 10'' 10'' 27'' 10'' 12'' KIERNAN AVE COVERT RD BACON RD BECKWITH RD NORTH AVE WOODLAND AVE MAZE BLVD CALIFORNIA AVE PARADISE RD WHITMORE AVE SHOEMAKE AVE BLUE GUM AVE KANSAS AVE STODDARD RD AMERICAN AVE TULLY RD MC HENRY AVE COFFEE RD OAKDALE RD ROSELLE AVE CLAUS RD LANGWORTH RD CARVER RD DALE RD PRESCOTT RD FINNEY RD ALBERS RD Whitmore/Carpenter LS 62 Scenic LS 31 D-3 D-4 R-2 10'' R-1 24'' U-3 SO-4 EM-1 15'' River Trunk PS Shackelford PS ?Î RT 48'' RT 48'' RT 21'' RT 54'' RT 60'' RT 14'' RT 72'' W-4 18'' W-8 15'' W-8 15'' R7 LS S-1 W-3 U-1 U-4 L-2 N-6 N-4 N-7 U-2 SO-1 L-4 SO-3 L-6 SO-2 N-1 N-3 N-9 L-1 N-5 L-3 N-8 D-1 N-2 W-6 W-9 L-5 D-5 D-2 W-1 W-4 SR-1 DT-1 EM-3 EM-4 DT-2 EM-2 15'' 18'' 18'' 12'' 18'' 18'' 15'' 10'' 15'' 18'' 18'' 15'' 24'' 10'' 48'' Hahn LS 19 Rumble LS 30 Benson LS 03 Rose and Celeste LS 29 COLLECTION SYSTEM CAPACITY IMPROVEMENTS FIGURE 4 CITY OF MODESTO WASTEWATER COLLECTION SYSTEM MASTER PLAN ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION Legend R7 LS Lift Station Upgrade in Progress Pipeline Upgrade in Progress R7 LS New Service Lift Station Improvement New Service Pipeline Improvements R7 LS Capacity Lift Station Improvements Capacity Pipeline Improvements R7 LS Lift Station Sewer Main Sphere of Influence Tributary Areas Area 1 Area 2 Area 3 Area 4 Area 5 Area 6 Area 7 Area 8/Northern Ceres Area 9 Area 10 O 0 4,000 8,000 Feet Beard Industrial Park Empire North Ceres ---PAGE BREAK--- ---PAGE BREAK--- Capacity Improvements New Growth Improvements R&R Improvements Reliability Improvements Storm Drain Removal CSMP CIP COSTS BY PROJECT CATEGORY FIGURE 5 CITY OF MODESTO WASTEWATER COLLECTION SYSTEM MASTER PLAN ALTERNATIVE LAND USE COLLECTION SYSTEM EVALUATION Total CSMP CIP Cost = $ 222.4M $103.7 M $37.5M $58.6 M $5.6 M $17.0 M ---PAGE BREAK---