Pierce County Public Works and Utilities Sewer Utility Unified Sewer Plan Update

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1 Capital Plan/ Sewer Improvement Program 8.1 Introduction 8.2 Cost Estimates 8.3 Scheduling 8.4 Capital Plan /Sewer Improvement Program 8.5 Improvement Types 8.6 Pierce County Sewer Utility, Water Utility, and Chambers Creek Properties 8.7 s Pierce County Sanitary Sewer and Water Utility And Chambers Creek Properties Capital Facility s Map Key 8.9 Detailed Specific Information Pierce County Sewer Utility 8.10 Sewer and Water Utility and Chambers Creek Properties Funds itures Sewer Facility Restricted Reserve Fund Sewer Utility Construction Fund Sewer Utility and Road s Coordination 8.15 Analysis of Septic Failures within the Urban Growth Area 8.16 On-Site Septic System Failure Pierce County Public Works and Utilities Sewer Utility Unified Sewer Plan Update

2 Section Introduction This section outlines the recommended Capital Plan (CFP) for the Pierce County Sewer Utility (Utility). The Capital plan outlines a six year window of proposed construction improvements to both the WWTP and Collection System. The six year CFP is completed for short term budgeting and construction scheduling and is published as part of the annual Capital Plan for Pierce County. The twenty year schedule or Sewer Improvement Program (SIP) is an internal document that the Utility s Strategic Planning and Asset Management group uses to forecast future plant improvements and expansions to meet the demands of residential, commercial, and industrial users. The mission of the Sewer Utility is to provide customers with high quality, cost effective sanitary sewer services by collecting and treating all wastewater generated from County service areas in accordance with applicable local, state, and federal permit requirements. It is the intent of the Utility s CFP that adequate wastewater collection and treatment facilities shall be available no later than occupancy of each new development. Sewer collection system expansion is primarily accomplished through new development paying for the construction of new lines and connections to the existing collection system to carry wastewater to the Chambers Creek Regional Wastewater Treatment Plant (WWTP). Much of Pierce County s Urban Growth Area (UGA) is located above a sole source aquifer, and Pierce County s Comprehensive Plan Section 19A , Utility- Sewer Objective 14 requires the use of sewers in the County s urban areas. Customers are located in portions of unincorporated Pierce County within designated UGA s including Parkland, Spanaway, Midland, Frederickson, Graham, South Hill, and all or portions of the following cities: Town of Steilacoom City of DuPont City of University Place City of Lakewood City of Tacoma MGD (millions of gallons per day) for the Western Slopes Service Area City of Milton (flows to the City of Tacoma's Central Wastewater Treatment Plant) City of Fife (flows to the City of Tacoma's Central Wastewater Treatment Plant) City of Edgewood (flows to the to the Lakehaven Sewer and Water District s Lakota Wastewater Treatment Plant with a small portion (350REs) to the City of Fife to the City of Tacoma's Central Wastewater Treatment Plant) The Utility has established a Residential Equivalent of 220 Gallons per Day (GPD) for system design purposes. Table Current Facility Inventory Facility Current Capacity Chambers Creek Regional Wastewater Treatment Plant 24.40MGD* (85%) University Place, Washington Tacoma Central Wastewater Treatment Plant (PC owned capacity) 2.54MGD* Tacoma, Washington capacity both facilities 26.94MGD* *Millions of Gallons per Day. December Pierce County Unified Sewer Plan

3 8.2 Cost Estimates Cost estimates are based upon many factors including documented costs of similar construction work, engineering experience, and costs of unknown constraints with new technologies. Due to the types of projects and the ever changing technologies associated with them, the actual design and costs to implement those designs may not adhere to the best practices of project cost estimation. to the initiation of any project outlines in the CFP the specifics of design must be reviewed and cost estimates updated to reflect current construction costs and conditions. The cost estimates utilized within the CFP are adjusted to 2010 dollars using an inflationary factor of 4% per year. 8.3 Scheduling The six-year CFP developed for the cycle outlines the immediate projects that the Utility deems most important to complete. The project list has been developed by the Senior Management Team with the assistance of the Strategic Planning and Asset Manager. In addition to those projects slated for 2010, other projects have been inserted in the years to round out the six year planning cycle. priorities not fully known at the time of CFP publication may cause a shift or replacement of projects to best serve the Utility. Funding also plays an integral part of the formation of the six-year CFP. Those projects that are dependent upon other projects for completion such as s 1-9 are seen as priorities that will not be revised unless funding, new technology, or wastewater treatment facility needs arise that would cause a restructuring of the construction timeline. 8.4 Capital Plan /Sewer Improvement Program Purpose of the Sewer Improvement Program (SIP) With the passage of Ordinance No s the Pierce County Council required the Utility to combine the information found in the annual Pierce County Budget and the CFP to produce an annual SIP. The SIP once served as a central review document for the Council, their staff members, and the public to understand the scope, cost, funding, and status, of planned sewer improvement projects proposed to be undertaken by the Utility. With the 2010 submission, the SIP became an appendix and reference to the Capital Six-Year Financing Plan. The Strategic Planning and Asset Management section utilize a 30 year SIP to forecast improvements to the Utility. The CFP will continue to be a part of the overall County six-year projection as compiled by the Advance Planning Section of Planning and Land Services under Title 19E Capital Six-Year Financing Plan. 8.5 Improvement Types With the individual rate payers as the primary stakeholder in the system, the Utility strives to make every effort to improve services within the system through five classes of improvement types: Maintenance: A project considered a routine activity associated with repairing a physical asset or keeping the physical asset functional during the asset's useful life. Maintenance of the wastewater treatment plant, collection system, pumps, and generators are examples of maintenance activities. Operations: (or operating a system) Are projects that include the costs and activities associated with the continued and highest and best use of an asset. Public Works and Utilities operations can include all plant operations including collections, treatment, and fertilizer manufacturing. Providing public education on how to best use a system, responding to constituent requests and questions, and sewer billing are also regarded as activities associated with the efficient operations of a system. December Pierce County Unified Sewer Plan

4 Preservation: Preservation is actually the replacement or preservation of an asset after it has reached its useful life to accomplish the same overall function. These projects can be confused with the capital improvement of a system. Types of preservation projects for the Utility can be replacing a pump at a pump station or replacing a failed pipe in a collections system. Improvement: An improvement project primarily improves the capacity or function of an asset. Any activity in the CFP is considered an improvement activity. In Public Works and Utilities, even the actions associated with the identification or development of the CFP is considered an improvement activity. Administrative: These projects or programs involve the management, planning, and coordination of the overall asset. Examples of administration activities include the management of boards or committees, planning activities such as basin planning or work on Environmental Impact Statements. Maintaining records and participation in department wide programs is also considered an administration activity. 8.6 Pierce County Sewer Utility, Water Utility, and Chambers Creek Properties The Utility includes the WWTP, Water Utility, and the Chambers Creek Properties. The Chambers Creek Properties were originally purchased by the Utility as a location to construct the WWTP. The Chambers Creek Properties Master Site Plan was completed in 1995 and updated in This document provides the blueprint for the development of the Properties including the establishment of the 200 acre reserve for the use of the WWTP and the 240 acres used for the development of the Chambers Bay Golf Course. The remaining 200 acres surrounding the WWTP and the 300 acres in the Chambers Creek Canyon will continue to be developed using the Chambers Creek Properties Master Plan. The WWTP will continue to be developed using the USP. 8.7 s s presented in this document are based upon Public Works and Utilities Core Values, they are: Safety both for the public and our employees; Teamwork provide the workforce the tools to do the job, create teamwork; Public Service being fiscally responsible, garnering a financial reserve, serving both existing and future population and continuing economic growth; Integrity open and honest operations, being a good neighbor ; Quality the Utility will always strive for excellence; Innovation keeping up with and investing in new technologies to meet existing and future regulatory requirements. Based on the above referenced core values, project priorities are based upon the following criteria: Safety, Emergencies, s funded outside of the Utility, s requiring a sequential order, Permit Requirements and Modifications, Level of Service/Cost Savings, Preservation, and New Capacity Chambers Creek Regional Wastewater Treatment Plant Expansion ( ) - s 1-9 This is a preservation and capacity improvement project for the Chambers Creek Regional Wastewater Treatment Plant including providing increased treatment capacity for the expansion and growth of the County s Sewer Service Area, along with preservation of the system. The project is broken into nine (9) sub-projects or sections with each section dependant upon the sub-projects within the section for a completed phase. December Pierce County Unified Sewer Plan

5 1. Chambers Creek Regional Wastewater Treatment Plant - SCADA Plant Communications Upgrade (2010) A maintenance project to replace the Open Process software programming currently used in the Supervisory Control and Data Acquisition (SCADA) process with traditional ladder logic programming making additions and/or changes simpler to effect. Replaces WWTP SCADA Open Process Replacement. 2. Chambers Creek Regional Wastewater Treatment Plant Emergency Generator Expansion ( ) Existing emergency generator capacity is inadequate to provide continuous power to the biological process sections of the WWTP. Current levels of back-up last approximately one-hour then systems start to fail and the overall biologic processes begin to be compromised. This upgrade will insure that in the event of a large scale blackout and/or power failure the plant s biologic processes will function normally until resumption of normal power supplies. 3. Chambers Creek Regional Wastewater Treatment Plant Electric Vault Dewatering Upgrades ( ) The existing vaults are not flood proof and several flooded during the December 2007 storm event. There is a high risk of electrical failure as well as a safety risk associated with vault flooding. Maintenance of flooded vaults requires significant staff time. This improvement project would waterproof and install covers to maintain a dry environment. 4. Chambers Creek Regional Wastewater Treatment Plant Plant Site Development ( ) This improvement project consists of two (2) sub-projects; Biological Treatment Process and Civil Improvements and Site Development. Both projects are integral to the expansion of the WWTP and the separation and insulation of the WWTP from the other Chambers Creek Properties improvements. 5. Chambers Creek Regional Wastewater Treatment Plant Disinfection Improvements ( ) This improvement project consists of projects integral to the expansion of the WWTP s ongoing disinfection improvement efforts to both satisfy our current NPDES discharge Permit and upcoming new requirements from the Governor s Puget Sound Initiative. 6. Chambers Creek Regional Wastewater Treatment Plant Non-Process Facility Improvements ( ) This improvement project consists of six (6) sub-projects; a Sewer and Traffic Operations Facility, Maintenance and Warehousing Improvements, Fertilizer Storage Facility, WWTP Laboratory and Testing Facility Expansion, and Operations Building Expansion. All projects are to improve WWTP efforts in materials storage, vehicle storage and maintenance, and vehicle operations. 7. Chambers Creek Regional Wastewater Treatment Plant - Liquid Stream Process Improvements ( ) This improvement project consists of eleven (11) sub-projects; Service Air Integration, Solids Thickening Expansion, Electrical Systems Upgrades, Phase 1 Utilidor Development, Process Water System Renovation, Biological Process Improvements Phase 1, Biologic Process Building Expansion with Blowers, 2 MGD Reclaimed Water Facility, Primary Tank Sedimentation Rehabilitation, Primary Influent Channel Improvements, and Primary Sedimentation Basin Odor Control. All proposed improvements are required to increase and modernize the liquid stream systems within the WWTP. 8. Chambers Creek Regional Wastewater Treatment Plant Biosolids Upgrades/Improvements Phase 1 ( ) This improvement project consists of five (5) sub-projects; Digester Expansion Phase 1, Fertilizer Manufacturing Facility Expansion Phase 1, Dewatering Expansion, Heating and Energy, and Headworks repair and Replacement s. This project will allow the expansion and improvement of the fertilizer manufacturing facility and its supporting systems. December Pierce County Unified Sewer Plan

6 9. Chambers Creek Regional Wastewater Treatment Plant Miscellaneous Repair and Replacement ( ) An improvement and preservation project to cover small scale system-wide repair and replacement projects during the WWTP Expansion Sewer Utility - Individual s 10 through Chambers Creek Regional Wastewater Treatment Plant Headworks (2010) A maintenance, operations, and improvement project for the for the WWTP including the installation of new perforated plate screens, the addition of a new grit chamber, the replacement of the scum collection system, and the addition of odor control facilities. Improvements also include the abandonment and removal of the existing belt presses as a result of the centrifuge installation in the Fertilizer Manufacturing Building and construction of a new Headworks building to enclose the facilities. 11. Chambers Creek Regional Wastewater Treatment Plant - Influent Flow Monitoring ( ) An operations project to upgrade influent flow metering to comply with existing requirements of the WWTP NPDES permit. 12. Chambers Creek Tunnel Rehabilitation Phase 2 ( ) A preservation project that provides for the rehabilitation and protection of the existing Chambers Creek Tunnel that has experienced accelerated hydrogen sulfide corrosion. The initial project included the lining of approximately 4,200 feet of the tunnel. Continued rehabilitation will include the re-lining of 1,100+ feet of the tunnel structure. The entire Tunnel length is over 12,000 lineal feet. 13. Collection System Flow Meters System Wide (2010) This is an operations project for the installation of flow meters throughout the County s collection system. In 2001, ten (10) flow meters were installed, nine (9) in the CIP budget and one (1) in the maintenance budget. This system of meters allows the Utility to accurately measure flows within the system, identify potential areas with inflow/infiltration problems, identify illegal dumps into the sewer system, and predict system improvements as the collection system expands. 14. Chambers Creek Regional Wastewater Treatment Plant Energy Dissipater Rehabilitation and Odor Control ( ) This preservation project includes the rehabilitation of deteriorating unlined concrete surfaces of this structure at the wastewater treatment plant. Odor Control measures will also be implemented to address existing conditions at this facility. 15. Cypress Green Community System Connection (2011) This is one of three (3) community systems (Etloh on Fox Island and Cascadia the others) that Pierce County has the ongoing responsibility to operate and maintain. Connection to the sewer system will be accomplished through the future extension of a collector line to the site by the City of Lakewood. 16. B Street Phase 2 ( ) split into two phases 2 and 3. Providing an overall cost reduction. Phase 2 includes the installation of approximately 10,000 feet of 36, 30, 27, and 24 diameter gravity pipeline along B Street East and Mountain Highway from 176 th Street East to 8 th Avenue East. Temporary connections into the Cresent Park Interceptor will need be redirected to permanent facilities to alleviate capacity issues in the Interceptor. December Pierce County Unified Sewer Plan

7 The County's Comprehensive plan and Unified Sewer Plan outlines the extension of a public transmission main that will provide the backbone for sewer service to and through the middle portion of the Spanaway Basin. The 24" - 30" transmission main will remove a private pump station and re-route the Holland Glen force main, to its permanent connection, from the existing public pump station while allowing adjacent properties to connect to the gravity sewer system. Expansion of gravity sewer service. Encourage development and develop parcels to preferred densities within the UGA. Remove a portion of the Holland Glen force main and decommission both force main and pump station serving the existing Wal*Mart. 17. B Street Phase 3 ( ) Phase 3 includes the installation of approximately 5,900 feet of 30 diameter gravity pipeline along B Street East and Mountain Highway from 192nd Street East to 204th Street East. 18. Canyon Road Improvements CRP 5404 (2010) A collection system improvement project that includes the installation of 8-inch sanitary sewer collector mains and stubs within the project limits of CRP 5404 Canyon Road. Improvements also include stub and mainline installations on Canyon Road, 144 th Street East and 152 nd Street East, installation of ladders and adjusting existing manholes in Canyon Road. Previous Phases 1 and 2 installed 14,500 feet of 18, 15, and 8 gravity sewer lines from 160 th Street East to 116 th Street East. 19. Lakewood Generator Replacement ( ) This is a preservation and improvement project consisting of the procurement and installation of replacement emergency generator sets at twenty-eight (28) pump station sites within the ULID 73-1 service area. The generators, installed between 1983 through 1986, have reached the end of their expected useful life. Three (3) of the twenty-eight generators were installed in , five (5) additional generators will be bid in 2009 with the remaining twenty (20) generators slated for installation before the end of Sound Transit Sewer Line Crossings ( ) Sound transit proposes to relocate R/R tracks within their R/W along Lakeview Drive SW in Lakewood per an April 15, 2008 letter. The Sewer Utility has six (6) pipeline crossings of the Sound Transit R/W, five of which were installed as part of ULID 73-1 and one as part of the Spanaway Loop Bypass Interceptor. None of the crossings can be eliminated. At a minimum, casing pipes on three of the crossings will need to be replaced or extended. 21. Miscellaneous Sewer Lines ( ) An operations and improvement project that will construct gravity collector sewer line extensions. This includes sewer improvements in conjunction with other jurisdictions road improvement projects. This also includes the cost of raising existing manhole rims located in road improvement projects. 22. Miscellaneous Septic Connections ( ) The Pierce County Council through Ordinance s has directed the Sewer Utility to investigate how best to connect properties that have failed on-site systems to the sewer system through the use of a newly created fund. The fund is comprised of 14% of the 2006 rate increase approved by the County Council for the Utility. This fund should realize approximately $250,000 dollars per year for connection related projects. It is the intent of the Sewer Utility to utilize these funds to offset the costs of the process for newly formed ULIDs returning unused dollars to the Enterprise Fund annually. December Pierce County Unified Sewer Plan

8 23. Chambers Creek Regional Wastewater Treatment Plant Waste Activated Sludge (WAS) Pump Replacement (2010) An operation, maintenance, and expansion project for the replacement of three (3) 10 hp pumps first placed on-line in 1984 that are now near the end of their projected life and are inadequate for the volumes of effluent required to be pumped. 24. Chambers Creek Regional Wastewater Treatment Plant Multi-stage Centrifugal Blowers (2010) A maintenance project to replace three the five 500 horsepower blowers that have reached the end of their service life. Not having enough air available would damage or diminish the biological process and threaten permit compliance. 25. Parkland/Brookdale Interceptor ( ) A maintenance and operation improvement project to increase the capacity of the Parkland/Brookdale Interceptor to meet the future flow needs of the eastern portion of Pierce County. The existing 30 inch reinforced concrete pipe is nearing its hydraulic capacity and will need to be upsizing or paralleled with 4500 feet of 30 inch line from Brookdale Road East and Golden Given Road East to 133rd Street East and A Streets so the sewer utility can continue to provide sewer service to the eastern portions of the County. Not completing this improvement will severely limit future wastewater collection to the eastern areas of the County by the year 2016, leading to a possible construction moratorium due to lack of collection capacity. 26. Grandview Rehabilitation ( ) A preservation project that provides for the rehabilitation and protection of the existing Grandview Drive Interceptor line that has experienced hydrogen sulfide corrosion. Replacement/repair of the identified lines will allow continued serviceability of the underground collection system and protection of the surrounding right of way and road area. 27. Brown s Point Generator Replacement ( ) A preservation and maintenance improvement project to replace the emergency generators at Watau-ga and Tok-a-lou streets in Brown s Point that are nearing their useful life of 30 years. The Brown s Point Sewer System is on the outer boundary of the Pierce County service area in close proximity to sensitive beaches and waterways. Due to the long response time for emergencies and historical roadway closures during natural disasters it is critical to have reliable equipment. A power failure lasting for more than 24 hours could cause significant damage to homes and the marine environment. Lack of replacement parts and service technicians make these generators extremely difficult to maintain and create an unnecessary weak link in the collection system. 28. Barksdale Pump Station Upgrades ( ) A maintenance, preservation, and improvement project to replace both pumps, install a new valve vault and control valves, install new RTU and antenna, and control panel including transfer switching. This sewer pump station, located in the old town historic district of DuPont was inherited by the Utility and the Utility is contractually obligated to upgrade this system based on a previous agreement with the City of DuPont. The pump station has demonstrated a significant ragging problem. The upgrade of this station will improve reliability. 29. Collections Manhole Rehabilitation ( ) A maintenance and operation improvement project to repair/replace 35 deteriorating concrete manholes throughout the collection system caused by hydrogen sulfide produced from force main entry points and turbulent flows. Replacement/repair of the identified manholes will allow continued serviceability of the underground collection system and minimize potential permit violations. 30. Collections Pipe Rehabilitation ( ) December Pierce County Unified Sewer Plan

9 A preservation and operation improvement project to slip line approximately 3,600 lineal feet of concrete and ductile iron pipe throughout the collection system deteriorating from hydrogen sulfide corrosion produced from force main entry points and turbulent flows. Diameter of pipe sizes varies from 8 to 36. Replacement/repair of the identified lines will allow continued serviceability of the underground collection system and minimize potential permit violations. 31. Chambers Creek Regional Wastewater Treatment Plant - Scoping and Feasibility Studies (2010) Study 1 Chambers Creek Regional Wastewater Treatment Plant Septage Receiving Station. An operations and maintenance project for handling Vactor truck waste. Currently Vactor trucks drop material on the asphalt pad on the south end of the treatment plant where it is manually decanted and drained by gravity to a local catch basin which is connected to a sump pump. The sump pump, which is not designed to handle the grit and debris that inevitably finds its way into the basin, receives excessive wear. The Vactor waste left behind is air-dried before being placed in a dumpster via a back-hoe. The process is odorous, inefficient, labor intensive, and relies on a system designed to pump storm water. Study 2 Day Island and Marina Area A maintenance and preservation project to determine the best solution for the Day Island/Marina sewer collection systems. This system is nearing 40 years old and was built on the shoreline of Day Island. Natural events over the past 40 years have seen the shoreline retreat leaving the line in Puget Sound. Due to the sensitivity of the area, saltwater erosion, and accessibility to the sewer mainlines and manholes, it has been determined that the Utility should prepare a rehabilitation and/or replacement plan. System failure would result in the introduction of raw sewage into Puget Sound. With the location of the line below the low water line of the Sound, no emergency repair would be possible. The County would be at risk of substantial fines from the DOE in the event of a failure. 32. Flow Meter Replacements - System Wide ( ) Replace 14 existing flow meters over the course of several years and connect the meters into the County's SCADA system. Existing flow meters throughout Utility's collection system are nearing their useful life span. Without replacement the reliability of the flow data will decrease and the frequency of missing data will increase. Without reliable flow metering the ability to track flows and calibrate the hydraulics model will be limited impeding efforts to control Inflow and Infiltration throughout the collection system and restrict the ability of the Utility to plan for future projects based on existing flows. 33. Chambers Creek Regional Wastewater Treatment Plant/Chambers Creek Properties Well #1 Decommissioning (2011) Originally drilled in 1945 the well was used until 1968 for industrial purposes to supply water for gravel mining operations. Its use was discontinued when Well #2 was drilled as a replacement, making Well #1 unnecessary. The DOE water right for Well #1 was relinquished as part of the conversion of Well #2 water rights from industrial to municipal. This well is located in an area of future development and is required to be properly decommissioned per state law. Leaving this well also allows a potential path for contaminants to enter the deep aquifer, which is intended for future municipal water supplies. Possible risks with not pursuing this project are the potential path of contamination for the deep aquifer and possibility of this well location to interfere with future development plans for this area. The County may be open to risk for non-compliance with State laws regarding proper well decommissioning. The project must be completed prior to the TPCHD approval deadline of March 18, 2011 or a request for extension of the variance will need to be pursued prior to expiration of the approval. December Pierce County Unified Sewer Plan

10 34. Collections Improvements CRP5471 ( ) There are twelve (12) parcels that will have their existing on-site septic systems impacted by the planned widening of 176th St E under County Road (CRP) These parcels must be connected to the sanitary sewer system prior to construction of the CRP to provide uninterrupted wastewater removal from these parcels. The timeframe for construction of CRP 5471 is unknown at this time but the sanitary sewer work needs to be completed prior to the start of the roadway construction. The connection of the described properties is part of the acquisition of right-of-way for the CRP, which is currently in progress. Easements are required for construction (extending stubs on to private property). The easements will be acquired by the Right-of-Way Section of the Engineering Division and all costs will be charged directly to the CRP. Potential high groundwater, deep sewer lines, and construction impacts to private residential properties will be located to minimize impacts as much as possible. 35. Chambers Creek Regional Wastewater Treatment Plant Digester #1 Roof Re-Coating (2011) The ceiling coating for Digester #1 has failed and requires a recoating. The purpose of the coating is to protect the digester's concrete structure, thereby maximizing its service life. The project includes the cleaning of the digester, erection of necessary scaffolding, surface preparation, and coating system application. It also includes the necessary labor efforts by plant staff to determine the correct coating system and also to facilitate and manage this effort. Failure to recoat the tank in a timely fashion can diminish the service life of the digester tank due to concrete degradation. Recoating of the tank will maximize the service life of the tank. This work can only be performed during the summer and only during a short (3 month) duration due to operational constraints. 36. Chambers Creek Regional Wastewater Treatment Plant Grit Blowers Replacement (2011) The blowers for the grit tanks are at the end of their useful life and require replacement. Current best available technology for replacement of these blowers is the application of turbo blowers. These are similar to those that will be used to replace the aeration blowers. Failure to replace the existing blowers in a timely manner can result in increased downtime and increased maintenance effort. Replacing the existing blowers with turbo blowers will increase reliability and decrease energy costs. An energy savings rebate is available for this project up to 70% of all costs. The rebate program with TPU requires the Sewer Utility to pay for all project costs up front, with a rebate coming after the new blowers have demonstrated the necessary performance and efficiency levels. 37. Chambers Creek Regional Wastewater Treatment Plant FMF Grit Tank and Safety Platforms (2011) There are numerous areas of inadequate access for maintenance and operations functions in the FMF and the Headworks grit tanks. These restrictions result in less than ideal access for operational needs (Headworks) and restrict routine maintenance (FMF). This project will provide platform modifications and/or additions to provide the necessary levels of safe and adequate access to the respective areas. There are five platform improvements identified in the FMF and two platform improvements for the grit tanks. Designs sufficient enough for bidding have already been completed for the grit tanks. The FMF platforms are at a 60% design level. This project would involve completion of the designs, which will be accomplished in-house, and the procurement and installation of the various platforms along with sufficient resources for staff involvement to facilitate and manage the design and construction efforts. December Pierce County Unified Sewer Plan

11 The restricted accesses are both a safety and a maintenance issue. Failure to remedy these situations may result in safety violations for fall protection and/or insufficient maintenance in particular areas. 38. Chambers Creek Replacement Pump (2010) This preservation project consists of the replacement of an existing pump within the impoundment area on Chambers Creek. The new system installation will include three 75HP pumps with a combined output of 3,000 gpm total withdrawal and new perimeter security fencing located directly adjacent to the existing facility Chambers Creek Properties - s 39 through Chambers Creek Properties BNSF Access Relocation and Fencing ( ) This improvement and administrative project consists of the revision of the Burlington Northern Santa Fe railroad right-of-way access, including design, permitting, fencing, landscaping, and construction. 40. Chambers Creek Properties Chambers Creek Canyon ( ) This improvement project consists of the construction of three trail heads with limited parking (Chambers Bay, Phillips Road, and Chambers Creek Property), two restroom facilities (lower canyon and upper canyon) pedestrian bridge over Chambers Creek, rehabilitation or installation of 2 1/2 miles of nature trail, removal or relocation of existing unsafe trails, drainage improvements within the middle and upper portion of the trail segments, and interpretive and directional signage. Development of the canyon should be done in phases, beginning with the lower canyon entrance (Chambers Bay). 41. Chambers Creek Properties North Dock Rehabilitation Replacement ( ) This improvement project consists of the removal of the existing North Dock and relocation and construction of a new public access pier and transient day use moorage. The transient day use moorage may be phased and constructed at a later date. Access to the public access pier will be from the Soundview Trail system and the North Dock Overpass. The project includes final engineering, design, and construction. 42. Chambers Creek Properties North Dock Pedestrian Overpass (2010) This improvement project consists of the construction of a 900 foot overpass with stairs and ramps to provide access to the Puget Sound shoreline and access to the future North Dock. The overpass is ADA compliant and is designed to provide safe access over the BNSF tracks. The project may be phased. 43. Chambers Creek Properties South Area Development (2016) Phase I of the South Area development is based on the uses identified within the Chambers Creek Properties Master Site Plan and through the WDFW Acclimation Facility. individual projects will take the information provided within the Master Plan and use it in the development of the project s scope, schedule, and budget. These projects include trail extensions, a boat launch facility, and an off-leash dog area that are provided as mitigation for the WWTP Expansion. Preliminary planning for the overall site plan will be completed to 30% and include the interface points with the new WDFW Acclimation Facility. 44. Chambers Creek Properties - WDFW Fish Count Station Trail Link ( ) An improvement project that provides for the construction of points of connection where the pedestrian bridge, provided by the future Washington Department of Fish and Wildlife Acclimation Facility, intersects the Chambers Creek Properties. Design of the project will occur as part of site planning for the South Area Development. December Pierce County Unified Sewer Plan

12 45. Chambers Creek Properties - Environmental Services Building Renovations (2010) Existing Lobby entrance and reception area does not adequately address today's post 9-11 safety and security standards. Existing workspace for receptionist is not ergonomically correct and is poorly planned to meet today's technological needs. Major conference rooms are so poorly lighted as to be almost unusable. The project will correct safety deficiencies identified in a recent safety audit conducted by head of Pierce County Security. Poor lighting and bad work space leads to less efficiencies and need to be corrected to maximize existing building resources. This is anticipated to be a phased project with design to occur in 2010 and construction in early Design phase will provide a list of the appropriate alternatives for the scope. 8.8 Pierce County Sanitary Sewer and Water Utility and Chambers Creek Properties Capital Facility s Map Key The following pages show location maps for all Sewer and Water Utility projects and Chambers Creek Properties projects for the CFP/SIP cycles. WWTP Indicates project is within the Wastewater Treatment Plant grounds. CCP Indicates projects with the Chambers Creek Properties. System Wide s located in various areas of the County. s not located with the WWTP or CCP are numbered individually on the map. Sewer Utility s: 1. WWTP SCADA Plant Communications Upgrade (2010) 2. WWTP Emergency Generator Expansion ( ) 3. WWTP Electric Vault Dewatering Upgrades ( ) 4. WWTP Site Development ( ) 5. WWTP Disinfection Improvements ( ) 6. WWTP Non-Process Facility Improvements ( ) 7. WWTP Liquid Stream Process Improvements ( ) 8. WWTP Biosolids Upgrades/Improvements Phase 1 ( ) 9. WWTP Miscellaneous Repair and Replacement ( ) 10. WWTP Headworks Conveyor Modifications ( ) 11. WWTP Influent Flow Metering ( ) 12. Chambers Creek Tunnel Rehabilitation ( ) 13. Collection System Flow Meters System Wide (2010) 14. WWTP Energy Dissipater Rehabilitation and Odor Control ( ) 15. Cypress Green Community System Connection (2011) 16. B Street Phase 2 ( ) 17. B Street Phase 3 ( ) 18. Canyon Road Improvements (2010) 19. Lakewood Generator Replacement ( ) 20. Sound Transit Sewer Line Crossings ( ) 21. Miscellaneous Sewer Line Connections System-Wide ( ) 22. Miscellaneous Septic Connections System-Wide ( ) 23. WWTP Waste Activated Sludge Pump Replacement ( ) 24. WWTP Multi-stage Centrifugal Blowers ( ) 25. Parkland/Brookdale Interceptor Phase 2 ( ) 26. Grandview Rehabilitation ( ) 27. Brown s Point Generator Replacement ( ) 28. Barksdale Pump Station Upgrades ( ) 29. Collection Manhole Rehabilitation System Wide ( ) 30. Collections Sewer Line Rehabilitation System Wide ( ) 31. Miscellaneous Scoping and Feasibility Studies ( ) December Pierce County Unified Sewer Plan

13 32. Flow Meter Replacements - System Wide ( ) 33. WWTP/CCP Well #1 Decommissioning (2011) 34. Collections Improvements CRP5471 ( ) 35. WWTP Digester #1 Roof Re-Coating (2011) 36. WWTP Grit Blowers Replacement (2011) 37. WWTP FMF Grit Tank and Safety Platforms (2011) 38. Chambers Creek Replacement Pump (2011) Chambers Creek Properties (CCP) s: 39. CCP BNSF Access Relocation and Fencing ( ) 40. CCP Chambers Creek Canyon ( ) 41. CCP North Dock Rehabilitation ( ) 42. CCP North Dock Pedestrian Overpass (2010) 43. CCP South Area Development (2016) 44. WDFW Fish Count Station Trail Link ( ) 45. CCP Environmental Services Building Renovations (2010) December Pierce County Unified Sewer Plan

14 Gig Harbor Ruston 27 Pierce County Sanitary Sewer Utility Capital Facility s and Financing Plan Map! CIP Point s Tacoma CIP Sewer Lines Fox Island Milton Pacific Auburn Existing Sewer Lines McNeil Island WWTP CCP 26 University Place Fircrest 12 Fife Edgewood Sumner 20 Lakewood Puyallup Bonney Lake Steilacoom!! 18! McChord AFB Municipal Boundaries DuPont 25 Water Features! 28 DISCLAIMER The map features are approximate and are intended only to provide an indication of said feature. Additional areas that have not been mapped may be present. This is not a survey. Orthophotos and other data may not align. The County assumes no liability for variations ascertained by actual survey. ALL DATA IS EXPRESSLY PROVIDED AS IS AND WITH ALL FAULTS. The County makes no warranty of fitness for a particular purpose. 15 Fort Lewis Orting I NOT TO SCALE Figure DISCLAIMER The map features are approximate and are intended only to provide an indication of said feature. Additional areas that have not been mapped may be present. This is not a survey. Orthophotos and other data may not align. The County assumes no liability for variations ascertained by actual survey. ALL DATA IS EXPRESSLY PROVIDED AS IS AND WITH ALL FAULTS. The County makes no warranty of fitness for a particular purpose. PIERCE COUNTY, WASHINGTON Pierce County Unified Sewer Plan Date: March 2010

15 8.9 Detailed Specific Information Pierce County Sewer Utility The projects for the Sewer Improvement Program and Capital Plan cycle are numbered to correspond to the location map in the section. Information in this section is color-coded and details projected costs for Preliminary Engineering, Final Engineering, Permitting, Construction, Construction Engineering, and Miscellaneous or Other. Estimates include a 4% inflation factor starting in 2010 and compounding over the six-year cycle. Additional information such as Fund and Identification, Scope, Purpose, Council District, and Service Basin can be found adjacent to the project name. Additional information such as scoping elements and project abbreviations are detailed at the bottom of each sheet. This same information is also found in the annual Capital Improvement Plan produced by the Pierce County Advance Planning Section. Of the forty-five (45) funded projects in the current Sewer Improvement Program, thirty-eight (38) are Sewer Utility projects and seven (7) are Chambers Creek Properties projects. As with the project descriptions, many projects do not have an individual number callout on the map due to their close proximity within the Chambers Creek Regional Wastewater Treatment Plant Campus, or the Chambers Creek Properties. Others are systemwide projects or are associated with an existing ULID with locations throughout the sewer service basin such as minor sewer line extensions, flow meter installations, or emergency generator replacements. s located within the Chambers Creek Regional Wastewater Treatment Plant are preceded by WWTP s located within the grounds of the Chambers Creek Properties are preceded by CCP December Pierce County Unified Sewer Plan

16 1. WWTP SCADA Plant Communications Upgrade 2010 Links to Other s or Chambers Creek Regional Wastewater Treatment Plant This project is Sub-project 1 of the proposed Chambers Creek Regional Wastewater Treatment Plant Expansion. A maintenance project to replace the Open Process software programming currently used in the Supervisory Control and Data Acquisition (SCADA) process with traditional ladder logic programming making additions and/or changes simpler to effect. Current open process software is out of date and there are no outside vendors that service this equipment. Replaces Wastewater Treatment Plant SCADA Open Process Programming. Cost increase due to scope modification. Reallocations of expenditures to be bond funded. Preliminary Engineering Final Engineering Permitting Construction Construction Engineering Other Cost Bonds Funds General Fund n/a n/a December Pierce County Unified Sewer Plan

17 2. WWTP Emergency Generator Replacement and Expansion Links to Other s or Chambers Creek Regional Wastewater Treatment Plant This project is Sub-project 2 of the proposed Chambers Creek Regional Wastewater Treatment Plant Expansion. Replacement of the wastewater treatment plant s emergency generating equipment. Existing emergency generator capacity is inadequate to provide continuous power to the biological and disinfection process sections of the wastewater treatment plant. Current levels of electric power back-up last approximately one-hour. If systems start to fail the overall biologic processes could be compromised. This upgrade will insure that in the event of a large scale blackout and/or power failure the plant s biologic and disinfection processes will function normally until resumption of normal power supplies. Reallocations of expenditures to be bond funded. re-evaluated due to WWTP project sequencing. Preliminary Engineering Final Engineering Permitting Construction Construction Engineering Other Cost Bonds Funds General Fund n/a n/a n/a December Pierce County Unified Sewer Plan

18 3. WWTP Electric Vault Dewatering Upgrades Links to Other s or Chambers Creek Regional Wastewater Treatment Plant This project is Sub-project 3 of the proposed Chambers Creek Regional Wastewater Treatment Plant Expansion. This improvement project will install covers and waterproofing to maintain a dry environment within the vaults while increasing safety levels. The existing vaults are not waterproof and several flooded during the December 2007 storm event. There is a high risk of electrical failure as well as a safety risk associated with vault flooding. Maintenance of flooded vaults requires significant staff time. re-evaluated due to WWTP project sequencing Preliminary Engineering Final Engineering Permitting Construction Construction Engineering Other Cost Bonds Funds General Fund n/a n/a n/a n/a December Pierce County Unified Sewer Plan

19 Links to Other s or 4. WWTP Site Development Chambers Creek Regional Wastewater Treatment Plant This project is Sub-project 4 of the proposed Chambers Creek Regional Wastewater Treatment Plant Expansion. Re-grade portions of the 180-acre site so that it is at a level in relation to the existing wastewater treatment plant and able to utilize gravity flow for the expansion of the wastewater treatment plant. Create a perimeter access road around the Chambers Creek Regional Wastewater Treatment Plant with construction staging areas, landscaping, stormwater ponds, security fencing, and trail. The landscape features will be added around the borders of the wastewater treatment plant along with a large stormwater detention area along the north border to add to the buffer between the wastewater treatment plant and Chambers Creek Properties. In order to avoid excessive energy costs associated with pumping, certain biological process expansions need to be constructed at a level grade below the existing wastewater treatment plant site to utilize gravity flow through the expanded wastewater treatment plant processes. With increased development and public access around the borders of the wastewater treatment plant, some form of physical and visual screening has become necessary. This will improve site aesthetics, as well as increase site security. The perimeter site development will also serve as the primary site of stormwater detention and treatment for the entire 180 acre wastewater treatment plant site. Schedule shift due to permit processing. Reallocations of expenditures to be bond funded. Construction bids numbers under engineer s estimate. Preliminary Engineering Final Engineering Permitting Construction 5, , ,996.8 Construction Engineering Other Cost 1, , , , ,193.2 Bonds 5, , ,540.0 Funds 1, , , , ,193.2 General Fund n/a n/a n/a December Pierce County Unified Sewer Plan

20 Links to Other s or 5. WWTP Disinfection Improvements Chambers Creek Regional Wastewater Treatment Plant This project is Sub-project 5 of the proposed Chambers Creek Regional Wastewater Treatment Plant Expansion. This improvement project consists of a replacement/upgrade of the ultraviolet systems integral to the wastewater treatment plant s ongoing disinfection efforts to both satisfy our current NPDES discharge permit and upcoming new requirements from the Puget Sound Initiative. The project also adds disinfection capacity to the wastewater treatment plant needed for the expansion of the Plant to both satisfy current NPDES discharge permit and upcoming new requirements from the Puget Sound Initiative. Reliability of the wastewater treatment plant s disinfection system is critical, with a direct impact on meeting the requirements of the wastewater treatment plant s NPDES permit. Maintenance frequency is also important; system downtime with supplemental chlorine addition is becoming less viable, as Ecology seeks to decrease the use of chlorine by increasing effluent chlorine limitations. Increased flows will require increased banks of ultraviolet treatment. Maintenance frequency is also important; system downtime with supplemental chlorine addition is becoming less viable, as Ecology seeks to decrease the use of chlorine by increasing effluent chlorine limitations. As the wastewater treatment plant expands, and additional regulations are brought to bear upon discharge into Puget Sound, there will be less opportunity to utilize chlorine disinfection. The existing ultraviolet disinfection system has a history of high maintenance needs and operation issues. This project replaces Disinfection System Phase 1 and Phase 2. re-evaluated due to WWTP project sequencing Preliminary Engineering ,114.1 Final Engineering 1, ,289.6 Permitting Construction 6, ,009.2 Construction Engineering Other Cost , , , ,441.5 Bonds , , ,441.5 Funds , , , ,441.5 General Fund n/a n/a n/a n/a December Pierce County Unified Sewer Plan