CHAPTER 7 CAPITAL IMPROVEMENT PLAN

Transcription

1 7.1 INTRODUCTION CHAPTER 7 CAPITAL IMPROVEMENT PLAN This Chapter presents the District s Capital Improvement Plan (CIP) in accordance with the requirements of WAC Wastewater capital improvements have been scheduled and prioritized on the basis of growth, regulatory requirements, component reliability, system benefit, and cost. For the proposed projects identified in this Chapter, more detailed project descriptions and preliminary project cost estimates are presented in Appendix K. A wastewater base map illustrating the conceptual locations of the proposed improvement projects is included in the jacket of the Plan. Other capital improvement projects may arise in the future that are not identified as part of the District s CIP presented in this Chapter. Such projects may be deemed necessary for remedying an emergency situation, accommodating improvements proposed by other agencies or land development, or addressing unforeseen problems with the District s wastewater system. Due to budgetary constraints, the construction of these projects may require that the proposed completion date for projects in the CIP be rescheduled. When new information becomes available, the District retains the flexibility to reschedule, add to, or delete proposed projects and to expand or reduce the scope of the projects, as best determined by the District. Additionally, future planning efforts by the Cities of Issaquah and Sammamish, or King County may affect land use zoning and service requirements within the District. Developments may create streets or provide alignments and locations of facilities that are different than shown on the Plan. Each capital improvement project will be reevaluated to consider the most recent planning efforts as the proposed completion date for the project approaches. Funding for CIPs will be assigned on the basis of each project s purpose and benefit, and project funding may come from various sources, such as general facility charges, local facility charges and capital replacement reserves. 7.2 PROPOSED SYSTEM IMPROVEMENTS The proposed system improvements in the CIP are based on projects identified in the collection system hydraulic model, problematic gravity mains and lift station issues identified by the District operational staff, on-going programs intended to reduce infiltration and inflow, and projects previously scheduled by the District WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-1 DECEMBER 2014

2 CHAPTER 7 CAPITAL IMPROVEMENT PLAN Each project cost estimate includes design and engineering, construction with a 20 percent contingency, 9.5 percent sales tax, and construction management. All project costs are based on 2013 dollars (ENR CCI = 9552) with future projects adjusted for inflation using a 3 percent annual interest rate. Projects that span multiple years or have annual recurring costs include escalated costs to adjust for inflation for each year beyond The recommended CIP projects are summarized below using the following abbreviations: R Regional projects INT Interceptor ( >8-inch diameter) projects CS Collection system ( < 8-inch diameter) projects CL Critical link projects LS Lift station and force main projects M Miscellaneous system and planning projects OM Operation and maintenance projects All projects from 2013 through 2018 are listed and described herein. Non-lift station projects included in the 10-year and 20-year CIP are also briefly discussed. The year shown for each project is the anticipated year of construction. New Lift Station projects anticipated for construction in the 10-year and 20-year CIP capital improvement projects, (i.e., after 2018), are listed together, and included in Table REGIONAL CAPITAL IMPROVEMENTS Currently, the District s entire sanitary sewer enters the KCDNR collection system on the south side of Lake Sammamish, near the entrance to Lake Sammamish State Park. When the District and KCDNR designed and constructed the project to increase the capacity of the sanitary sewer system to the KCDNR system at the Lake Sammamish State Park location, it was decided that ultimately the District flows would be split to south and north connections to the KCDNR system. The District is evaluating system and operational changes to accommodate future growth and increase efficiency that would augment the sanitary sewer volume and add the planned northern location for the District connection to the KCDNR collection system R-1A North Diversion Project The District is anticipating significant growth and increased sanitary sewer flows in the North Lake Sammamish, Tiburon, Inglewood East, and Northeast Plateau WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

3 CHAPTER 7 CAPITAL IMPROVEMENT PLAN sewer basins. The District plans to divert flows from these District sewer basins to the KCDNR collection system in Redmond. King County has the flexibility to send this flow to be treated at Brightwater, the new regional wastewater treatment facility north of Woodinville. The North Diversion would provide relief to facilities downstream of the Inglewood and North Lake Sammamish lift stations in the future that would otherwise require costly upgrades. Seven scenarios for the North Diversion Project were evaluated in Chapter 4 comprised of three primary alignments. These alignments included the Hill Top, East Lake Sammamish Parkway, and the East Lake Sammamish Trail alignments. For scenarios 1, 2 and 3 the North Lake Sammamish Lift Station would pump south. In scenarios 4, 5 and 6 the North Lake Sammamish Lift Station would pump north as part of the North Diversion. Scenario 7 posited no foreseeable change of the collection system with all sanitary sewers flowing south to the KCDNR connection point. From the analysis in Chapter 4, the preferred alignment for the North Diversion is Scenario 6: the East Lake Sammamish Trail with the North Lake Sammamish Lift Station pumping to the north. This alternative includes the installation of approximately 3,700 linear feet of 18-inch HDPE pipe in the Inglewood area and approximately 18,000 linear feet of 24-inch HDPE pipe along the East Lake Sammamish Trail to the connection point in Redmond. This portion of the Project would be funded by King County. The cost to the District would include upgrades to the North Lake Sammamish Lift Station and approximately 4,800 linear feet of 16-inch force main to the connection point with the North Diversion. However, once the flows from the Inglewood Lift Station and the Tiburon Sewer Basin are diverted north, the North Lake Sammamish Lift Station will have additional capacity and would not require immediate upgrades. Therefore, the timing of the North Lake Sammamish Lift Station upgrades would depend on the growth rates in the North Lake Sammamish sewer basin and the capacity of the downstream infrastructure, specifically the Central Lake Sammamish Lift Station. From growth projections forecasted in Chapter 2 and the North Diversion Project evaluation in Chapter 4, the District is planning for construction of Scenario 6 to begin in The North Diversion Project, including project alternatives and cost estimates, is discussed in Chapter 4. North Lake Sammamish Lift Station and force main upgrades are discussed in LS-2B. Estimated Project Cost: $14,330, WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-3 DECEMBER 2014

4 CHAPTER 7 CAPITAL IMPROVEMENT PLAN R-1B North Diversion Delay Project The North Diversion Project, as defined in project R-1A, assumes King County will begin design and construction of the North Diversion in If, however, the North Diversion is delayed or does not meet King County s prioritization of imminent conveyance system improvement projects, the District anticipates other downstream facilities and infrastructure will require intermediate upgrades due to the expected population growth within the District s sewer service area. These upgrades include: Interim Facility Project Cost North Lake Lift Station and force main improvements $4,052,500 North Lake gravity sewer main improvements $2,791,800 Central Lake Lift Station and force main improvements $1,394,500 Central Lake gravity sewer main improvements $3,451,200 Total Interim Facility Project Cost $11,690,000 Estimated Project Cost: $11,690, R-2 Control Structure Modifications Modify current operations at the Control Structure site. Modifications include: Replace the east sewer bay with bypass sewer main and backfill to the existing surface elevation. Replace existing bar rack with in-channel grinder, or mechanical screen. Install a metering method, such as a Parshall Flume flow monitor, with telemetry to connect to the District s SCADA system. Remove existing structure above sewer bays and cover with concrete slabs and access hatches. Install ventilation and odor control. Replace roof on remaining structure. Estimated Project Cost: $750, INTERCEPTOR CAPITAL IMPROVEMENTS The interceptor and transmission main improvements identified are designed to increase capacity, repair or replace failing and problematic mains, and to improve WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

5 CHAPTER 7 CAPITAL IMPROVEMENT PLAN access to the mains for operational staff. For this plan, interceptors and transmission mains are defined as gravity and low-pressure sewer pipes larger than eight inches in diameter. For budgeting purposes, the cost estimates shown here assume open trench construction in existing right-of-way. The District may be able to realize cost savings by using trenchless technologies. The District should investigate these alternative construction methods during the design phase of these projects INT-1 East Lake Sammamish Parkway SE Gravity Sewer Replacement at Montage (SE 4 th Street), 12 Inch to 15 Inch Increase the capacity of the existing gravity sewer main along East Lake Sammamish Parkway SE, at approximately SE 4 th Street (if extended), by replacing approximately 310 LF of existing 12-inch-diameter sewer pipe with 15-inchdiameter sewer pipe. This project will correct an existing deficiency. Estimated Project Cost: $352, INT-2 Issaquah-Pine Lake Road and 234 th Avenue SE Gravity Sewer Main Replacement, 8 Inch to 12 Inch Replace approximately 310 LF of 8-inch gravity sewer main along Issaquah-Pine Lake Road, near the intersection of 234 th Avenue SE with 12-inch-diameter main. This project will correct an existing deficiency. Estimated Project Cost: $231, INT st Place SE and SE 56 th Street Gravity Sewer Main Replacement, 12 Inch to 18 Inch Replace approximately 650 LF of 12-inch gravity sewer main along 221 st Place SE, just south of SE 56 th Street, with 18-inch-diameter sewer pipe. This project will increase the capacity of the existing gravity sewer main for anticipated development and population growth in the future. Estimated Project Cost: $442, INT-4 SE 62 nd Street and East Lake Sammamish Parkway SE Gravity Sewer Main Replacement, 8 Inch to 12 Inch Replace approximately 1,250 LF of 8-inch gravity sewer main along SE 62 nd Street, east and west of East Lake Sammamish Parkway SE, with 12-inch-diameter sewer 2013 WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-5 DECEMBER 2014

6 CHAPTER 7 CAPITAL IMPROVEMENT PLAN pipe. This project is identified to increase the capacity of the existing gravity sewer main for anticipated development and population growth in the future. Estimated Project Cost: $494, INT-5 South Plateau Parallel Conveyance Interceptor, 20 Inch and 36 Inch Install approximately 4,500 linear feet of new 20-inch low pressure sewer main along SE 43 rd Way extending from the Highland Creek Parallel sewer to the Control Structure. The extension will be used for redundancy and to potentially reduce high velocities by splitting the flows as the District s sanitary sewer increases in the future. Project also includes approximately 750 linear feet of 36- inch sewer pipe along SE 42 ND Street to parallel the existing 24-inch sewer main from Klahanie. Estimated Project Cost: $6,300, INT-6 South Pine Lake Interceptor Replacement 228 th Avenue SE to 219 th Avenue SE, 10 Inch and 12 Inch The existing condition of the South Pine Lake gravity interceptor is poor. The interceptor is comprised of 10-inch-diameter AC pipe and contains several sags through a generally flat slope. The District plans to replace it with approximately 4,000 linear feet of 12-inch-diameter sewer pipe. For budget planning purposes, the cost estimate assumed replacement of the existing interceptor by open trench. The method for replacement of the existing interceptor will be selected during design. Estimated Project Cost: $1,182, COLLECTION SYSTEM CAPITAL IMPROVEMENTS Collection system improvement projects include gravity or low pressure sewer mains with diameters equal to, or less than 8 inches. These projects may either improve existing facilities or extend new collection systems to currently unsewered areas. For this reason, collection system improvement may have a variety of funding sources and the identified projects could potentially be installed by DEA, ULID, or CIP for the District WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

7 CHAPTER 7 CAPITAL IMPROVEMENT PLAN CS-1 Water s Edge Lift Station Collection Sewer System Install approximately 1,450 linear feet of 8-inch sewer pipe for the gravity collection sewer to connect Pine Lake Heights Lift Station and First Branch Lift Station to the Water s Edge Lift Station (See LS-3). Estimated Project Cost: $1,600, CS-2A Camden Park Shallow Sewer Replacement Install approximately 300 linear feet of replacement deep sewer main in Camden Park to connect to the Camden Park Lift Station. Estimated Project Cost: $450, CS-2B Camden Park Gravity Connection Install approximately 2,000 linear feet of new sewer main to connect the gravity collection system from 244 th Avenue NE (at the Good Samaritan Lift Station) to the Camden Park Lift Station. Estimated Project Cost: $1,319, CRITICAL LINK PROJECTS Critical link projects provide access to sewer service for large unsewered areas or to areas where customers have expressed interest in obtaining sewer service, but have not been successful in extending the service CL-1 South End East Lake Sammamish Parkway/Place Crossing, Gravity Sewer, 8 Inch Install approximately 200 lineal feet of 8-inch gravity sewer main across East Lake Sammamish Parkway to connect Sammamish Woods Highlands area. Estimated Project Cost: $184, WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-7 DECEMBER 2014

8 CHAPTER 7 CAPITAL IMPROVEMENT PLAN CL-2 Upper Waverly Connecting Sewer, Gravity Sewer, 8 Inch Install approximately 950 lineal feet of 8-inch gravity sewer main to provide sanitary sewer service to Upper Waverly. Estimated Project Cost: $434, CL-3 Louis Thompson Sewer Main, Gravity Sewer, 8 Inch Install approximately 1600 lineal feet of 8-inch gravity sewer main along Louis Thompson Road NE to provide sewer service to the District s North Lake Sammamish sewer basin. Estimated Project Cost: $1,194, CL-4A Sammamish Town Center Initiation Support (SE 4 th and Other Gravity) This project is in support of providing service to the Sammamish Town Center. Funding for this project will likely be provided by the developer or as part of a ULID. Estimated Project Cost: $861, CL-4B Sammamish Town Center Collection System This project consists of new sewer piping installed as part of the Sammamish Town Center project. Funding for this project will likely be provided by the developer. Estimated Project Cost: $18,357, LIFT STATION AND FORCE MAIN CAPITAL IMPROVEMENTS The following lift station and force main projects are designed to improve operation of the existing lift station and construct new lift stations LS-1 Central Lake Sammamish Lift Station Improvements Improvements include installing a third pump at the Central Lake Sammamish Lift Station. The additional pump will be used to improve reliability, and to supplement the existing pumping capacity to sustain current peak wastewater flows from the Inglewood and North Lake Lift Stations. The additional capacity WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

9 CHAPTER 7 CAPITAL IMPROVEMENT PLAN from the third pump is anticipated to be sufficient for buildout according to the model and the preceding analysis in Chapter 2. Estimated Project Cost: $195, LS-2A North Lake Sammamish Lift Station Improvement, Phase I 3 rd Pump Installation Phase I improvements include installing a third pump at the North Lake Sammamish Lift Station. The additional pump will be used to improve reliability, and to supplement the existing pumping capacity to sustain current peak wastewater flows and increased future flows. Estimated Project Cost: $195, LS-2B North Lake Sammamish Lift Station Improvement, Phase II Capacity and Force Main Upgrade Phase II improvements include increasing the capacity at the lift station for anticipated growth within the sewer basin, and installation of a new force main that would connect to the North Diversion Project (see R-1A). Phase II improvements are contingent on the expediency of the North Diversion Project and likely to be implemented beyond the District s 6-year planning period. These improvements are discussed in Chapter 4. Estimated Project Cost: $4,300, LS-4A Flow Meter Installation Program (Todd s Landing, Pine Lake Glen, Beaver Lake Estates, Freegard) Install magnetic flow meters at multiple sewer lift stations. The flow meter will include telemetry with continuous monitoring capabilities via the District s SCADA system. The District plans to install flow meters at the following lift stations: Beaver Lake Estates Pine Lake Glen Todd s Landing Freegard 2013 WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-9 DECEMBER 2014

10 CHAPTER 7 CAPITAL IMPROVEMENT PLAN The project cost for installation of a flow meter varies for each lift station identified. Estimated Project Cost: $25,000-$30,000/each ($110,000 total) LS-4B Flow Meter Replacement Program (Beaver Dam, Aldarra, Central Lake Sammamish) Replace existing flow meters at the following sewer lift stations. The project cost for installation of a flow meter varies for each lift station identified. However, for budgeting purposes, the estimated project cost will be based on the most expensive application anticipated. Beaver Dam Aldarra Central Lake Sammamish Estimated Project Cost: $10,000/each ($30,000 total) LS-5A Freegard Lift Station Replacement, Phase I Wet Well Replace the Freegard lift station wet well and related improvements. Improvements would include: Increase storage in the wet well. Replace existing isolation valves. Estimated Project Cost: $1,113, LS-5B Freegard Lift Station Replacement, Phase II Mechanical, Electrical and Flow Meter Replace the Freegard lift station mechanical and electrical equipment and install a magnetic flow meter with telemetry. Estimated Project Cost: $617, LS-6 Inglewood Odor Evaluation Evaluate the use of calcium nitrate injection into the force main to address odors at various locations including air vacuum valves and the manhole at which the force main transitions to open-channel flow. Alternatives to address these odors will be evaluated and include point-source carbon canisters at air vacuum valves WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

11 CHAPTER 7 CAPITAL IMPROVEMENT PLAN and manhole lids, oxygen injection, and increasing the dosing rate/volume of calcium nitrate into the force main. The estimated project cost will be adjusted depending on the alternative selected during design. Estimated Project Cost: $297, LS-24 Trossachs Lift Station Pump Replacement Improvements will include replacement of the two 75-hp pumps at the Trossachs Lift Station, and an evaluation of incoming flow conditions that may be causing cavitation of the impellers. Estimated Project Cost: $55, FUTURE LIFT STATION PROJECTS Future lift station projects include those projects that are unlikely to be implemented in the District s 6-year planning period or are likely to be funded by DEA or ULID. Costs for future lift stations are based on costs developed initially for the District s 2003 Wastewater Comprehensive Plan. The list of future lift station projects is provided in Table 7-1. New Lift Stations in the 10-year CIP LS-3 Water s Edge Lift Station: Estimated Project Cost: $1,551,940 Located along 222 nd Place SE on the south side of Pine Lake. Note: This will replace Pine Lake Heights and First Branch Lift Stations upon completion of connecting collection sewers. LS-7 Tiburon Lift Station: Estimated Project Cost: $1,886,627 Located near the intersection of 216 th Avenue NE and NE 4 th Street. LS-10 Broadmoore Estates Lift Station: Estimated Project Cost: $2,644,229 Located along NE 31 st Way near 240 th Avenue NE. LS rd Lift Station: Estimated Project Cost: $662,902 Located on 223 rd Avenue SE, near SE 12 th WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-11 DECEMBER 2014

12 CHAPTER 7 CAPITAL IMPROVEMENT PLAN LS-15 Inglewood Lift Station Capacity Evaluation and Pump Upgrade: The evaluation will consider the North Diversion Project status, hydraulics associated with the chosen alternative, as well as revised growth projections. Estimated Project Cost: $323,790 Located at NE Inglewood Hill Rd. LS-16 Wesley Cove Lift Station: Estimated Project Cost: $581,730 Located west of 244 th Avenue NE, between NE 22 nd and NE 24 th. LS-17 Swan Ridge Interim Lift Station: Estimated Project Cost: $614,937 Located in the Swan Ridge development area, east of 244 th Avenue NE and north of NE 8 th Street. LS-18 High Country 3 Lift Station: Estimated Project Cost: $843,693 Located in High Country Division 3, along SE 25 th, at approximately 265 th SE, if extended. LS-20 Providence Ridge Lift Station: Estimated Project Cost: $614,937 Located south of SE 43 rd Way at approximately 220 th SE if extended. LS-21 Tibbetts Station Lift Station: Estimated Project Cost: $712,097 Located SE 33 rd Place and 264 th Avenue SE. LS-22 Sunnyhills Estates 2 Lift Station: Estimated Project Cost: $696,109 Located SE 31 st Place and 254 th Avenue SE. LS-23 French SE 8th Lift Station: Estimated Project Cost: $1,543,492 Located near the intersection of SE 8 th Street and 214 th Avenue SE New Lift Stations in the 20-year CIP LS-9 North Fork Lift Station: Estimated Project Cost: $735,693 Located at approximately 220 th Avenue SE and SE 60 th, west of the North Fork of Issaquah Creek. LS-11 Treefarm East Lift Station: Estimated Project Cost: $795,575 Located on the south end of 242 nd Avenue NE in or adjacent to the Treefarm development at approximately the alignment of NE 4 th WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

13 CHAPTER 7 CAPITAL IMPROVEMENT PLAN LS-12 Aldarra Golf South Lift Station: Estimated Project Cost: $1,140,609 Located north of Old Issaquah-Fall City Road, south of The Members Club at Aldarra golf course, between 287 th Avenue SE and 292 nd Avenue SE (if both extended). LS-14 Loree Estates Lift Station: Estimated Project Cost: $2,352,505 Located near the west end of SE 19 th Street, at approximately 204 th Avenue NE (if extended). LS-19 High Country Entrance Lift Station: Estimated Project Cost: $950,983 Located near the Duthie Hill entrance to High Country, at SE 31st Street and 266 th Avenue SE MISCELLANEOUS SYSTEM CAPITAL IMPROVEMENTS The District has identified miscellaneous or general projects that will be fully or partially funded by the wastewater utility. Estimated project costs represent only the cost for sewer for those projects shared by both the water and sewer utility M-2 District Headquarters Site Expansion 60 Percent Water/ 40 Percent Sewer Improvements include: New fuel facility Decant facility Vehicle washing station Material Storage Site fencing Estimated Sewer Portion of Project Cost: $1,650, M-3A New Vehicles 60 Percent Water/40 Percent Sewer The District budgets an amount annually to cover periodic purchases of vehicles. Estimated Sewer Portion of Project Cost through 2018: $580,660 (6-year CIP) 10-year CIP: $689,169 additional 20-year CIP: $2,265,227 additional 2013 WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-13 DECEMBER 2014

14 CHAPTER 7 CAPITAL IMPROVEMENT PLAN M-3B New Equipment 60 Percent Water/40 Percent Sewer The District budgets an amount annually to cover periodic purchases of large equipment. Estimated Sewer Portion of Project Cost: $49,330 for 2013 & $42,228 for 2014 $56,000/year after M Seismic VA 60 Percent Water/40 Percent Sewer Conduct a seismic vulnerability assessment at the District s water and sewer facilities (i.e., wells, storage tanks, lift stations, pump stations) to evaluate and determine facilities at risk of damage or failure. The study will also identify retrofits that may improve reliability and continued operation during and following an earthquake. Estimated Sewer Portion of Project Cost: $42, M-5 Environmental Protection Program 60 Percent Water/40 Percent Sewer The District maintains an environmental protection plan to guide the development of District processes and methods that have less impact on the natural environment. The program will include operation and maintenance of water and sewer systems, construction activities, and District administrative operations. Estimated Sewer Portion of Project Cost: $41, M-6 Security Improvements 60 Percent Water/40 Percent Sewer The District maintains a security improvement plan that includes ongoing assessment of the District s facilities and identifies areas where security could be improved. Current security improvements include perimeter fencing along the south boundary of the District Headquarters and motion detection for the District s water and wastewater facilities. Estimated Sewer Portion of Project Cost: $90,120 6-year CIP $19,680 additional 10-year CIP WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

15 CHAPTER 7 CAPITAL IMPROVEMENT PLAN M-9 Sewer Comprehensive Plan Update (Every 6 Years) Every 6 years the District must update its wastewater comprehensive plan. Capital funds are allocated periodically to support these updates. Estimated Project Cost: 569,188 in 6-year CIP OPERATION AND MAINTENANCE PROJECTS The District has identified operation and maintenance projects that will be fully or partially funded by the wastewater utility OM-1 District Headquarter Maintenance Program 60 Percent Water/40 Percent Sewer The District maintains a program for larger repair and replacement and upgrade projects for the District headquarters facilities. Estimated Project Cost: $113,105 in the 6-year CIP OM-2 Repair and Replacement Program The District maintains a repair and replacement (R&R) program that identifies existing and potential future projects that need to be improved as part of the CIP. R&R projects that the District plans to implement within the 6-year planning period have been identified as individual projects within the CIP. However, future projects beyond the 6-year planning period but within the 20-year planning period must still be included in the District s future budget planning. Estimated Project Cost: $2,459,748 in the 10-year CIP $6,415,924 additional in the 20-year CIP OM-3 Grinder Pump Replacement Program The District maintains the residential grinder pump systems in their sewer service area. Each grinder pump is estimated to have a service life of 15 years. Therefore, the District maintains a program to replace aging grinder pump system every 15 years. Estimated Project Cost: $950,000in the 6-year CIP $360,000 additional in the 10-year CIP $1,320,000 additional in the 20-year CIP 2013 WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-15 DECEMBER 2014

16 CHAPTER 7 CAPITAL IMPROVEMENT PLAN OM-4 Cities Overlay and Road Improvements The District must respond to work to adjust the sewer system components when the land use jurisdiction has an overlay project. Estimated Project Cost: $37,500/year in the 6-year CIP 7.3 CAPITAL IMPROVEMENTS PLAN SCHEDULE Table 7-1 provides a summary of each capital improvement project and the proposed schedule for implementation. Several projects span multiple years. The District can reschedule its capital improvement projects as needed to accommodate unanticipated projects in the future. Wastewater base maps illustrating the conceptual location of the proposed capital improvement projects identified for each of the District s 13 sewer basins are presented in Figures 7-1 through A listing of the Sewer Basins is provided here for reference. An overall map is also provided as a pull-out map. Figure 7-1: Northeast Plateau Figure 7-8: Trossachs Figure 7-2: Beaver Dam Figure 7-9: Yellow Lake Figure 7-3: Inglewood East Figure 7-10: North Sunny Hills Figure 7-4: Tiburon Figure 7-11: Laughing Jacobs Figure 7-5: North Lake Sammamish Figure 7-12: South Pine Lake Figure 7-6: Central Lake Sammamish Figure 7-13: Freegard Figure 7-7: Mallard Bay WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN DECEMBER 2014

17 240th Ave NE 259th Way NE LS-10 NE Redmond Fall City Rd NE 34th St 260th Ave NE NE 29th Ct NE 30th Pl 234th Pl NE NE 29th Pl NE 28th Pl NE 29th St NE 29th St 259th Ave NE NE 32nd St NE 29th Pl NE 27th St NE 27th Pl 233rd Ave NE NE 21st Pl NE 18th St 233rd Pl NE 234th Ave NE 232nd Pl NE NE 20th Pl 235th Ave NE NE 23rd St 234th Ave NE NE 19th Dr NE 17th St NE 16th Pl NE 21st St 236th Ave NE NE 24th Pl NE 22nd St NE 25th Way 238th Pl NE 239th Pl NE LS-16 NE 20th St GOOD SAMARITAN LS NE 25th St 244th Pl NE NE 19th St 245th Pl NE NE 26th St NE 24th St 246th Pl NE 247th Ct NE 247th Pl NE NE 18th St Pedestrian Walk 248th Pl NE 248th Ter NE CS-2A Easement CAMDEN PARK LS NE Ames Lake Rd NE 27th Dr 232nd Ave NE NE 15th St 233rd Ave NE NE 16th St NE 14th St NE 14th St 243rd Ave NE 244th Ave NE NE 11th Pl NE 11th St CS-2B 250th Ave NE 238th Ave NE NE 10th St 258th Ave NE 233rd Ave NE LEGEND: NE 8th St!! INGLEWOOD EAST NE 6th St NE 5th St NE 5th St 242nd Ave NE 245th Pl NE LS th Ln NE 254th Ave NE NE 8th Way NE 10th St NE 9th St! GRINDER PUMPS EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES SAMMAMISH PLATEAU WATER & SEWER DISTRICT GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS NORTHEAST PLATEAU ³ WASTEWATER COMPREHENSIVE PLAN FIGURE 7-1 NORTHEAST PLATEAU BASIN CAPITAL IMPROVEMENT PROJECT LEGEND: CS-X LS-X COLLECTION SYSTEM PROJECT ( 8" DIAMETER ) LIFT STATION & FORCEMAIN PROJECT ,200 Feet M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Northeast_Plateau.mxd

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19 240th Ave NE 245th Pl NE Windsor Dr SE 238th Ave NE 238th Ave NE NE 6th Pl INGLEWOOD EAST Easement NE 5th St NE 5th Pl 242nd Ave NE NE 7th Pl NE 10th St 244th Ave NE 245th Pl NE NE 8th St NORTHEAST PLATEAU LS-4B 250th Ln NE BEAVER DAM LS 250th Ave NE 254th Ave NE NE 10th St NE 8th Way 258th Ave NE NE 9th St 244th Walk NE NE 4th St NE 3rd Pl 246th Ct NE NE 3rd Pl 244th Ave NE NE 2nd Ct 249th Pl NE E Main Dr E Plateau Dr E Main St NE 1st Pl 244th Ave SE 245th Pl SE SE 3rd Ct 246th Way SE 1st St SE 2nd Pl 247th Ave SE SE 4th Pl 245th Ave SE SE Windsor Blvd SE 8th St INGLEWOOD EAST SE 14th St 248th Ave SE NORTH SUNNYHILLS 254th Pl SE LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS BEAVER DAM CAPITAL IMPROVEMENT PROJECT LEGEND: LS-X LIFT STATION & FORCEMAIN PROJECT ³ ,000 Feet SAMMAMISH PLATEAU WATER & SEWER DISTRICT WASTEWATER COMPREHENSIVE PLAN FIGURE 7-2 BEAVER DAM BASIN M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Beaver_Dam.mxd

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21 218th Ave NE 227th Ave SE 219th Pl NE 240th Ave NE NE 17th Pl 217th Pl NE 217th Pl NE E Main St TIBURON SE 3rd Pl SE 5th Pl 218th Ave SE NE 16th St NE 9th St 218th Pl NE NE 17th Ct 219th Ave NE LS-15 SE 1st St SE 8th St NE 1st St 220th Ave SE NE 18th St 220th Pl NE 221st Ave NE SE 4th St 221st Pl NE NE 15th St NE 12th Pl 222nd Pl NE NE 9th Dr NE Inglewood Hill Rd NE 13th Pl 11th Pl NE 223rd Ct NE 222nd Pl SE 223rd Pl NE NE 14th Dr 224th Pl NE NE 10th St NE 7th St NE 6th Ct 224th Ave SE 225th Ave NE 224th Ave NE 224th Pl SE 225th Pl SE 225th Pl NE 226th Pl NE NE 12th Pl 225th Ct NE 227th Ave NE NE 18th Pl NE 16th St 227th Pl NE 228th Ave NE LS-6 228th Ave SE 228th Pl NE 229th Ave NE 231st Pl NE INGLEWOOD LS SE 6th Pl 229th Pl NE 230th Ave NE NE 17th Pl NE 13th St NE 4th St E Main St NE 18th St SE 1st St 232nd Ave NE 232nd Pl NE NE 10th Pl 233rd Ave NE 233rd Pl NE NE 17th St CL-4B NE 16th Pl NE 14th Pl NE 14th St E Main St 234th Pl NE 234th Ave SE 235th Ave NE SE 8th St 236th Ave NE 233rd Ave NE NE 8th St 237th Pl NE NE 4th Pl 238th Ave NE LS th Ave NE E Main St NORTHEAST PLATEAU NE 6th Pl NE 5th St Easement NE 5th Pl NE 14th St 242nd Ave NE 243rd Ave NE 244th Ave SE 244th Ave NE NE 10th St 244th Walk NE 244th Ave NE NE 4th St E Main Dr 245th Pl SE SE 4th Pl NE 16th St 245th Ave NE 245th Pl NE 246th Way NE 18th St NE 11th St 245th Ave SE NE 3rd Pl 247th Ave SE 246th Ct NE Windsor Dr SE BEAVER DAM CL-4A NORTH LAKE SAMMAMISH SE 16th Pl 223rd Ave SE SE 12th Pl SE 13th St SE 15th Pl SE 16th Pl SE 16th St SE 17th St SE 12th St 233rd Ave SE SE 15th Ct 235th Ave SE SE 16th Pl 238th Ave SE NORTH SUNNYHILLS SE Windsor Blvd SE 14th St 248th Ave SE LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN SAMMAMISH PLATEAU WATER & SEWER DISTRICT FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS WASTEWATER COMPREHENSIVE PLAN FIGURE 7-3 INGLEWOOD EAST BASIN Inglewood East CAPITAL IMPROVEMENT PROJECT LEGEND: LS-X CL-X LIFT STATION & FORCEMAIN PROJECT CRITICAL LINK PROJECT ³ ,400 Feet M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Inglewood_East.mxd

22

23 209th Ave NE 210th Pl NE 211th Ave NE 217th Ave NE 218th Pl NE 219th Pl NE 222nd Ave NE NE 13th St 208th Ave NE NE 16th St 209th Ave NE NE 14th St NE Inglewood Hill Rd 209th Ave NE NE 11th St 210th Ave NE NE 15th St 210th Ave NE 208th Ave NE NE 9th St 211th Ave NE 211th Ave NE 211th Pl NE 211th Pl NE NE 15th St 212th Ave NE NE 15th St NE 14th Pl NE 13th Ct NE 8th St LS-8 NE 6th St NE 12th St 213th Pl NE NE 14th St NE 10th Pl NE 9th Pl NE 14th Pl NE 11th Pl 217th Pl NE 218th Ave NE 218th Ave NE NE 16th St 220th Pl NE 221st Ct NE NE 11th St 221st Ave NE NE 15th St NE 12th Pl 222nd Pl NE NE 13th Pl 222nd Pl NE 11th Pl NE 223rd Pl NE 22nd Pl NE 224th Pl NE NE 14th Dr NE 12th Ct NE 10th St 224th Ave NE 223rd Pl NE 208th Ave NE 209th Ave NE NE 8th Pl 214th Pl NE NE 8th St 216th Pl NE 217th Pl NE NE 9th St NE 9th Dr NE 6th Pl 216th Ave NE 216th Pl NE 218th Ave NE 218th Pl NE 219th Ave NE INGLEWOOD EAST 222nd Pl NE NE 7th St 208th Ave NE NE 5th Pl 208th Ave NE 210th Ave NE 210th Ave NE NE 4th St 211th Pl NE 212th Ave NE LS-7 NE 2nd St 218th Ave NE NE 4th St 219th Ave NE 221st Ave NE NE 3rd Pl 222nd Pl NE NE 2nd St NE 6th Ct 223rd Pl NE Louis Thompson Rd SE NORTH LAKE SAMMAMISH E Main St 210th Pl SE 211th Pl SE NE 1st St E Main St 214th Ave NE 214th Ave SE 215th Ave NE 216th Ave NE E Main St NE 1st St 223rd Ave NE LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS TIBURON CAPITAL IMPROVEMENT PROJECT LEGEND: LS-X LIFT STATION & FORCEMAIN PROJECT ³ Feet SAMMAMISH PLATEAU WATER & SEWER DISTRICT WASTEWATER COMPREHENSIVE PLAN FIGURE 7-4 TIBURON BASIN M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Tiburon.mxd

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25 202nd Pl SE 208th Ave SE 210th Pl NE 218th Ave NE 227th Ave SE 227th Pl NE LS-2A NORTH LAKE SAMMAMISH LS LEGEND: LS-2B R-1B 190th Pl SE East Lake Sammamish Pkwy SE 192nd Ave SE SE 26th St EXISTING LIFT STATION FUTURE LIFT STATION LS-2B INT-1 193rd Ave SE SE 25th St LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN 194th Ave SE SE 16th St SE 24th Pl 196th Ave SE SE 28th Pl SE 27th Pl SE 28th Pl FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS NORTH LAKE SAMMAMISH CAPITAL IMPROVEMENT PROJECT LEGEND: INT-X R-X INTERCEPTOR PROJECT ( > 8" DIAMETER ) REGIONAL PROJECT R-1A R-1B 197th Ave SE SE 21st St SE 24th Way SE 29th St SE 10th St LS-14 SE 19th St SE 23rd St SE 25th Pl 200th Ave SE 201st Ave SE CL-3 204th Ave SE SE 8th St CENTRAL LAKE SAMMAMISH 202nd Ave SE 205th Ave NE NE 7th Ct ³ 205th Ave SE 205th Ave NE 206th Ave NE 206th Pl NE Louis Thompson Rd NE 205th Ct NE 206th Ave NE 207th Ave NE 207th Ave NE 207th Ave SE 207th Pl NE 207th Pl NE NE 16th St NE 8th St NE 3rd St 208th Ave SE NE 15th St NE 13th St 208th Ave SE NE 11th St NE 5th Pl 208th Ave NE 209th Pl SE 210th Ave NE NE 9th St NE 8th Pl Louis Thompson Rd SE SE 3rd Way 209th Ave NE 210th Ave NE 211th Ave NE SE 4th St SE 20th St SE 24th St SE 7th St SE 12th St 211th Ave NE 211th Pl NE 211th Pl NE 211th Pl SE 212th Ave SE NE 15th St 213th Pl NE NE 6th St NE 4th St SE 5th Pl SE 11th St 214th Ave SE SE 13th Pl SOUTH PINE LAKE R-1A NE 10th Pl NE Inglewood Hill Rd 214th Ave NE E Main St SE 1st St SE 26th St NE 9th Pl NE 6th Pl TIBURON 215th Pl SE SE 20th St NE 16th St 216th Ave NE E Main St 218th Ave SE LS-23 SE 16th Pl 215th Ln SE NE 8th St SE 8th St 216th Ave SE NE 4th St 217th Ave NE SE 3rd Pl 217th Ave SE SE 28th St NE 9th St 218th Pl NE 219th Ave NE SE 1st St 218th Ct SE 218th Ln SE 219th Ave NE 219th Ln SE 220th Ave SE 219th Pl SE 220th Pl NE 221st Ave NE 221st Ave NE NE 1st St 220th Ave SE 11th Pl NE 222nd Pl NE 222nd Ave NE INGLEWOOD EAST SE 4th St 223rd Ave SE NE 14th Dr 224th Pl NE Lancaster Way SE NE 9th Dr NORTH SUNNYHILLS SE 21st Pl 221st Pl SE NE 13th Pl NE 12th Pl SAMMAMISH PLATEAU WATER & SEWER DISTRICT 222nd Pl SE 223rd Ave NE 225th Ave NE NE 6th Ct 223rd Pl NE 225th Ave SE 225th Pl SE SE 23rd Pl WASTEWATER COMPREHENSIVE PLAN FIGURE 7-5 NORTH LAKE SAMMAMISH BASIN NE 12th Pl 226th Ave SE 225th Ct NE NE 2nd St SE 12th Pl SE 13th St 227th Ave NE SE 21st Pl SE 22nd Pl SE 23rd Pl SE 29th St 228th Ave SE LS-X LIFT STATION & FORCEMAIN PROJECT CL-X CRITICAL LINK PROJECT ,800 Feet M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\North_Lake_Sammamish.mxd

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27 Easement 202nd Ave SE 202nd Pl SE SE 17th St SE 19th St 203rd Ave SE 190th Pl SE 192nd Ave SE SE 22nd Pl 193rd Ave SE 197th Ave SE SE 21st St SE 23rd St SE 20th Pl 201st Ave SE SE 23rd Pl NORTH LAKE SAMMAMISH 207th Ave SE SE 20th St 196th Ave SE SE 24th St CL 1 R-1B CL 2 East Lake Sammamish Pl SE 194th Ave SE 194th Pl SE SE 24th Pl SE 27th Pl SE 24th Way SE 28th Pl 196th Ave SE East Lk Sammamish Sh Ln SE SE 31st Pl 197th Ave SE SE 30th St 196th Ave SE SE 32nd St SE 25th Pl 200th Ave SE SE 29th St 199th Ave SE Easement SE 27th Pl 201st Ave SE 202nd Pl SE SE 26th St SE 30th St 204th Ave SE SE 26th St SE 28th Pl SOUTH PINE LAKE R-1B SE 33rd St 198th Pl SE CENTRAL LAKE SAMMAMISH LS SE 34th St SE 35th Pl LS-1 207th Ave SE LS-4B SE 39th St SE 39th Pl 212th Way SE SE 40th St LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY East Lake Sammamish Pkwy SE 203rd Ave SE MALLARD BAY SAMMAMISH PLATEAU WATER & SEWER DISTRICT SE 40th Pl FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS CENTRAL LAKE SAMMAMISH ³ WASTEWATER COMPREHENSIVE PLAN FIGURE 7-6 CENTRAL LAKE SAMMAMISH BASIN CAPITAL IMPROVEMENT PROJECT LEGEND: R-X REGIONAL PROJECT LS-X CL-X LIFT STATION & FORCEMAIN PROJECT CRITICAL LINK PROJECT ,000 Feet M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Central_Lake_Sammamish.mxd

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29 220th Pl SE SE 50th St SE 32nd St 198th Pl SE SE 33rd St East Lake Sammamish Pkwy SE East Lk Sammamish Sh Ln SE 199th Ave SE SE 30th St CENTRAL LAKE SAMMAMISH 207th Ave SE SE 34th St 212th Ave SE SE 35th Pl SE 34th Pl 211th Pl SE 212th Ct SE 212th Pl SE 213th Pl SE 213th Pl SE SE 28th Ln 214th Pl SE 214th Pl SE SE 35th Way SE 33rd Pl 216th Ave SE 216th Ct SE 216th Pl SE 217th Ave SE SE 30th Pl SE 32nd Pl 217th Pl SE SE 35th St SE 30th Ct 218th Ave SE 219th Pl SE 220th Ave SE 220th Pl SE 220th Pl SE SE 29th Pl SE 32nd St SE 32nd St SE 33rd St SE 34th St SE 35th St 221st Ave SE 222nd Pl SE 223rd Ave SE SE 39th St 202nd Pl SE 212th Way SE SE 37th St SE 39th St SOUTH PINE LAKE 221st Ave SE 221st Pl SE SE 38th St R-1B 203rd Ave SE 205th Ave SE SE 40th Pl R-2 SE 40th Ct SE 40th Ln SE 41st Ln 226th Pl SE 206th Ave SE SE 42nd St East Lk Sammamish Sh Ln SE SE 42nd Pl SE 42nd Ln 221st Pl SE 223rd Pl SE SE 42nd Ln ALEXANDER'S LS SE 43rd Way INT-5 MALLARD BAY LS SE 44th St Pedestrian Opas Pedestrian Walk FREEGARD LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS MALLARD BAY CAPITAL IMPROVEMENT PROJECT LEGEND: R-X INT-X REGIONAL PROJECT INTERCEPTOR PROJECT ( > 8" DIAMETER ) ³ ,100 Feet SAMMAMISH PLATEAU WATER & SEWER DISTRICT WASTEWATER COMPREHENSIVE PLAN FIGURE 7-7 MALLARD BAY BASIN M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Mallard_Bay.mxd

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31 287th Ave SE 300th Ave SE 292nd Ave SE Redmond Fall City Rd 286th Ave SE SE 8th St 290th Ave SE 292nd Ave NE Snoqualmie River Rd SE SE 5th St West Beaver Lake Dr SE SE 18th Pl East Beaver Lake Dr SE 259th Pl SE 259th Pl SE Beaver Lake Way SE LS-18 YELLOW LAKE SE 34th St SE 36th St SE 33rd St 262nd Ave SE 261st Ave SE 264th Ave SE SE Duthie Hill Rd SE 37th St SE 25th St 271st Ave SE TROSSACHS LS LS-24 SE 22nd Way SE 25th Pl 274th Ave SE SE 26th Pl Trossachs Blvd SE 275th Ct SE SE 27th St LS-4B ALDARRA LS 292nd Ave SE ALDARRA CLUB LS LS-12 SR 202 SE 39th Way 262nd Ave SE SE 40th St 262nd Pl SE SE 42nd St SE 39th St 280th Ave SE SE Issaquah Fall City Rd SE 41st St 287th Ave SE 295th Ave SE LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS TROSSACHS CAPITAL IMPROVEMENT PROJECT LEGEND: LS-X LIFT STATION & FORCEMAIN PROJECT ³ ,700 Feet SAMMAMISH PLATEAU WATER & SEWER DISTRICT WASTEWATER COMPREHENSIVE PLAN FIGURE 7-8 TROSSACHS BASIN M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Trossachs.mxd

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33 SE 44th St 256th Ave SE 236th Ave SE SE 32nd Way Issaquah Pine Lake Rd SE SE 24th St 241st Ave SE LAUGHING JACOBS SE 18th St SE 44th St 238th Ave SE 238th Ave SE SE 42nd Ct SE 42nd Pl 239th Ave SE Easement SE 33rd St SE 41st St SE 42nd St 239th Pl SE 239th Pl SE SE 25th Ct SE 40th Pl SE 44th Ct 239th Ave SE 240th Ave SE SE 28th St 240th Ave SE 239th Pl SE SE 39th Ct 240th Pl SE SE 41st Pl SE 42nd Pl SE 43rd Pl SE 22nd St SE 23rd St 241st Pl SE 243rd Ave SE 242nd Pl SE SE 44th St SE 18th Pl SE 37th Pl SE 40th Pl SE 44th Pl SE 45th Pl SE 21st St 242nd Ave SE SE 36th Pl SE 38th Pl SE 39th St SE 40th St SE 41st Ln SE 41st Pl 243rd Pl SE SE 45th St 242nd Ave SE 243rd Ave SE SE 35th Pl 244th Pl SE SE 46th Way SE 17th Pl SE 20th Pl SE 25th St 244th Ave SE SE 30th St SE 32nd St SE 34th Pl SE 39th Pl 245th Ave SE SE 42nd Pl 245th Ave SE SE 46th Ct 244th Ave SE SE 37th St 245th Pl SE SE 46th Pl SE 42nd Ct SE 46th St 246th Ave SE 248th Ave SE NORTH SUNNYHILLS SE 36th Ct 247th Ave SE SE 43rd Pl SE 44th Pl 246th Pl SE SE 44th Ct SE 45th St 247th Ave SE 247th Pl SE SE 31st Pl 248th Ave SE SE 38th St SE 45th Pl SE 28th Pl 248th Pl SE 248th Ct SE 248th Ln SE SE 46th Pl SE 17th St 249th Ave SE SE Issaquah-Fall City Rd LS-22 SE Klahanie Blvd SE 40th Dr SE 41st Dr SE 42nd Dr 251st Ave SE SE 31st Pl SE 42nd St 249th Ave SE 252nd Ave SE 252nd Ave SE 252nd Pl SE SE 43rd Way SE 43rd St Easement SE 43rd Pl LS-4A 253rd Pl SE SE 42nd St SE 18th Pl 255th Pl SE SE 19th Pl SE 28th St 254th Ave SE SE 41st Ct 257th Pl SE West Beaver Lake Dr SE SE 27th St East Beaver Lake Dr SE SE Issaquah Beaver Lake Rd Klahanie Dr SE SE 31st Pl SE 42nd Way 258th Ave SE 257th Ave SE SE 30th St SE 32nd Pl SE 35th Pl SE 41st St SE 39th St SE 40th St 257th Pl SE 258th Ave SE SE 22nd Pl 258th Pl SE SE 34th St 260th Ave SE SE 39th Way 259th Way SE SE 41st Pl SE 38th Ct SE 39th Pl SE 40th Ct 259th Ave SE 261st Ave SE SE 30th St SE 38th St SE 36th St 262nd Pl SE SE 27th St 262nd Ave SE SE 40th St SE 18th Pl East Beaver Lake Dr SE SE 29th St 261st Ave SE 262nd Ave SE SE 42nd St 263rd Ave SE 262nd Pl SE 263rd Pl SE 264th Ave SE SE Duthie Hill Rd SE 39th St 263rd Ct SE TROSSACHS BEAVER LAKE ESTATES LS 266th Ave SE SE 31st St SE 37th St SE Issaquah Fall City Rd LS-19 LS-21 LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS YELLOW LAKE CAPITAL IMPROVEMENT PROJECT LEGEND: LS-X LIFT STATION & FORCEMAIN PROJECT ³ ,500 Feet SAMMAMISH PLATEAU WATER & SEWER DISTRICT WASTEWATER COMPREHENSIVE PLAN FIGURE 7-9 YELLOW LAKE BASIN M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Yellow_Lake.mxd

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35 Windsor Dr SE 218th Ave SE 218th Ave NE NE 1st St 220th Ave SE LS rd Ave NE SE 4th St NORTH LAKE SAMMAMISH 224th Ave SE 224th Pl SE 225th Pl SE NE 2nd St 228th Ave NE 228th Ave SE E Main St SE 1st St 232nd Ave NE E Main St INGLEWOOD EAST REDFORD HUDSON LS E Main St SE 8th St Easement 244th Ave NE 244th Ave SE NE 3rd Pl 245th Pl SE SE 4th Pl 246th Way SE Windsor Blvd 247th Ave SE NE 3rd Pl 249th Pl NE BEAVER DAM E Main Dr E Plateau Dr M-2 217th Ave SE 218th Ln SE 219th Ln SE LS-4A 219th Pl SE SE 37th St SE 16th Pl 219th Pl SE SE 20th St SE 32nd St 223rd Ave SE SOUTH PINE LAKE 220th Pl SE SE 21st Pl SE 28th St LEGEND: 220th Ave SE SE 29th Pl 220th Pl SE SE 33rd St 221st Ave SE 222nd Pl SE SE 38th St 221st Pl SE 223rd Ave SE 223rd Pl SE 224th Ave SE EXISTING LIFT STATION FUTURE LIFT STATION 224th Ln SE 225th Ave SE LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN SE 15th Pl 225th Pl SE SE 16th Pl 226th Ave SE SE 36th Ln 224th Ln SE SE 18th St SE 29th St SE 16th St SE 35th St SE 17th St SE 21st Pl SE 22nd Pl FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS NORTH SUNNYHILLS CAPITAL IMPROVEMENT PROJECT LEGEND: INT-X LS-X INTERCEPTOR PROJECT ( > 8" DIAMETER ) LIFT STATION & FORCEMAIN PROJECT SE 21st St 229th Ave SE OM-1 TODD'S LANDING LS SE 27th Ct SE 37th St SE 40th St 230th Pl SE SE 42nd Ct 230th Ln SE 231st Ave SE Audubon Park Dr SE 231st Ln SE SE 35th Pl 234th Ave SE 235th Ave SE 234th Pl SE SE 26th Pl SE 31st St 236th Ave SE SE 32nd Way SE 18th St 238th Ave SE 238th Ave SE LAUGHING JACOBS ³ 238th Ave SE SE 35th St SE 24th St 239th Ave SE Easement SE 40th Pl 239th Pl SE SE 25th Ct 239th Pl SE 240th Pl SE 241st Ave SE SE 41st Pl SE 18th Pl SE 22nd St SE 23rd St 242nd Ave SE SE 28th St SE 16th Pl SE 21st St 243rd Ave SE SE 32nd St SE 17th Pl SE 34th Pl 245th Ave SE INT-2 SE 40th St SE 40th Pl SE 41st Ln SE 41st Pl 244th Pl SE SE 20th Pl 244th Ave SE 244th Ave SE 246th Ave SE SE 30th St SE 14th St 247th Ave SE 248th Ave SE YELLOW LAKE SE 37th St SE 37th Pl SE 38th St SE 28th Pl 248th Pl SE SE 17th St 249th Ave SE SE Klahanie Blvd SE 40th Dr Easement 251st Pl SE SE 41st Dr 251st Ave SE 251st Ave SE SE 42nd St SE 23rd St 252nd Ave SE 252nd Ave SE Easement 252nd Pl SE 254th Pl SE SE Issaquah Beaver Lake Rd 253rd Ct SE 253rd Pl SE 255th Pl SE West Beaver Lake Dr SE SE 19th Pl 254th Ave SE East Beaver Lake Dr SE 254th Ave SE SE 28th St 256th Ave SE Klahanie Dr SE SE 31st Pl SE 41st St SE 27th St SE 30th St SE 32nd Pl SE 35th Pl SE 37th Way SE 40th St SAMMAMISH PLATEAU WATER & SEWER DISTRICT SE 34th St 260th Ave SE SE 39th Way 259th Way SE WASTEWATER COMPREHENSIVE PLAN FIGURE 7-10 NORTH SUNNYHILLS BASIN SE 22nd Pl Beaver Lake Way SE 259th Ave SE 260th Pl SE 36th St SE 38th St 261st Ave SE 262nd Ave SE SE 40th St M-X MISCELLANEOUS PROJECT OM-X OPERATION AND MAINTENANCE PROJECT ,900 Feet M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\North_Sunnyhills.mxd

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37 223rd Ave SE 226th Pl SE 223rd Pl SE SE 42nd Ln 224th Pl SE SE 37th Ter SE 43rd Way INT-5 SOUTH PINE LAKE 224th Ct SE SE 36th Ln 225th Pl SE SE 38th Ter Providence Point Dr SE SE 42nd Ter 228th Ave SE Providence Point Dr SE SE 42nd Ct Pedestrian Opas 228th Ave SE SE 37th St SE 40th St 229th Ave SE SE 41st Ct 229th Ct SE SE 43rd Pl 229th Pl SE SE 41st Pl SE 42nd Ct 230th Way SE 230th Pl SE 231st Ct SE SE 38th Pl 231st Ave SE 232nd Ct SE 232nd Ave SE SE 40th Pl SE 45th Pl SE 40th Ct 232nd Ave SE 234th Ave SE SE 42nd St NORTH SUNNYHILLS INT-5 Issaquah Pine Lake Rd SE 239th Pl SE SE 44th St 239th Pl SE 240th Pl SE SE 37th Pl 243rd Ave SE 244th Pl SE SE 34th Pl SE Klahanie Blvd YELLOW LAKE 246th Pl SE 225th Ave SE SE 47th Pl FREEGARD 227th Pl SE SE 53rd St SE 48th St SE 52nd St SE 51st Pl SE 47th Way 238th Pl SE 238th Pl SE SE 42nd Ct SE 42nd Pl SE 41st St SE 42nd St SE 44th Ct 241st Ave SE SE 39th Ct SE 40th Pl 241st Ct SE SE 41st Pl SE 42nd Pl SE 42nd St SE 43rd Pl 241st Pl SE 242nd Ave SE 242nd Pl SE SE 39th St SE 40th Pl SE 41st Ln 243rd Ln SE 243rd Pl SE SE 42nd Pl SE 44th St SE 44th Pl SE 45th St SE 35th Pl SE 36th Pl SE 38th Pl SE 40th St SE 41st St 245th Ave SE 246th Ave SE SE 39th Pl SE 42nd Pl 245th Ave SE SE 44th Ct SE 43rd Pl SE 44th St SE 44th Pl 245th Pl SE SE 37th St SE 36th Ct 247th Ave SE 248th Ave SE SE 38th St SE 44th Ct SE 45th St SE 37th Pl 248th Ct SE SE 45th Pl SE 50th St SE 46th Pl SE 48th Pl SE 51st St 227th Ave SE 228th Ave SE 227th Ave SE 228th Ave SE 229th Ave SE 229th Pl SE 230th Ter SE SE 47th Ct 231st Ave SE SE 45th Ct 231st Ave SE 231st Pl SE 232nd Ave SE 233rd Ave SE 234th Ave SE SE 54th Pl 235th Ave SE 236th Ave SE Summerhill Condos AcRd 238th Way SE SE Issaquah-Fall City Rd 239th Ave SE 240th Ave SE Highlands Dr NE 240th Ave SE 240th Ave SE 241st Ave SE SE 46th Pl SE 49th Pl SE 47th Pl SE Issaquah Fall City Rd SE 45th Pl 242nd Ave SE 242nd Ave SE 243rd Ct SE SE 46th Way SE 47th St SE 46th Ct 244th Ave SE 244th Pl SE SE 46th Pl SE 46th St SE Issaquah-Fall City Rd SE 45th Way 247th Pl SE LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS Laughing Jacobs CAPITAL IMPROVEMENT PROJECT LEGEND: INT-X INTERCEPTOR PROJECT ( > 8" DIAMETER ) ³ ,100 Feet SAMMAMISH PLATEAU WATER & SEWER DISTRICT WASTEWATER COMPREHENSIVE PLAN FIGURE 7-11 LAUGHING JACOBS BASIN M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Laughing_Jacobs.mxd

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39 NORTH LAKE SAMMAMISH LS-4 SE34th St 211th PlSE 212th Ave SE SE35th Way SE26th St SE27th St SE28th St SE29th St 213th Ave SE SE32nd St 212th CtSE SE28th L n SE35th Pl SE34th Pl 213th PlSE 213th PlSE 214th Ave SE 214th PlSE 214th PlSE SE33rd Pl 216th Ave SE 216th CtSE 216th PlSE SE28th St 217th Ave SE SE34th Pl PINE LAKE HEIGHTS LS SE30th Pl SE32nd Pl 217th PlSE SE35th St SE30th Ct 218th Ave SE 219th PlSE 220th Ave SE 220th PlSE 220th PlSE SE33rd St CS-1 222nd PlSE SE29th Pl SE32nd St SE34th St SE35th St 221stAve SE 223rd Ave SE SE23rd Pl LS-3 FIRST BRANCH LS 225th Ave SE 226th Ave SE 224th PlSE SE23rd Pl NORTH SUNNY HILLS 226th Ave SE SE27th St SE29th St SE35th St 228th Ave SE U nnam ed SE24th St 230th Ave SE SE27th Ct U nnam ed U nnam ed Issaquah Pine L ake Rd SE 230th L n SE SE36th L n 212th Way SE SE42nd St EastL k Sam m am ish Sh L n SE LEGEND: SE40th Pl EastL ake Sam m am ish Pkwy SE EXISTIN G L IFTSTATION FU TU REL IFTSTATION L OW PRESSU REFORCEMAIN FORCEMAIN S &TIGHTL IN ES GRAV ITY FUTURE SEWER MAINS: GRAV ITY FORCEMAIN L OW PRESSU REFORCEMAIN SE39th St MALLARD BAY SE42nd Pl SE42nd L n FU TU REDISTRICTSEWERSERV ICEBOU N DARY KIN G COU N TY PARCEL S SOU THPIN EL AKE CAPITAL IMPROVEMENT PROJECT LEGEND: CS-X LS-X INT-X COL L ECTION SY STEM PROJECT ( 8"DIAMETER) L IFTSTATION &FORCEMAIN PROJECT IN TERCEPTORPROJECT (>8"DIAMETER) U nnam ed SE44th St SE38th Pl LS th Ave SE SE43rd Way SE37th St ³ ,000 Feet 221stAve SE SE40th Ct 221stPlSE 220th PlSE 221stPlSE SE38th St 222nd Ave SE SE40th L n SE41stL n 221stCtSE Pedestrian Opas Co m m unity CenterAcRd 226th PlSE 223rd PlSE SEHighland Ter 224th L n SE SE42nd L n 224th PlSE 225th PlSE SE37th Ter SE38th Ter 225th PlSE 224th L n SE INT-5 SE42nd Ter Pro vidence Heights L o o p SE43rd Ct SE42nd Ct SAMMAMISHPL ATEAU WATER&SEWERDISTRICT M:\Sam m Plat\11475WW Co m pplan\gis\basins_ CIP\So uth_ Pine_ L ake.m xd 228th Ave SE U nnam ed INT-6 229th Ave SE SE40th St 230th Way SE LAUGHING JACOBS WASTEWATERCOMPREHEN SIV EPL AN FIGU RE7-12 SOU THPIN EL AKEBASIN SE37th St SE42nd Ct 230th PlSE

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41 Kalmia Ct NW FREEGARD LS LS-5A MALLARD BAY East Lake Sammamish Pkwy SE Parking lot AcRd 220th Ave SE SE 51st St SE 51st Pl SE 50th St 225th Ave SE SE 47th Pl SE 48th Pl SE 46th Pl 227th Ave SE 227th Pl SE 228th Ave SE 227th Ave SE 228th Ave SE 229th Ave SE 229th Pl SE 230th Way SE 231st Ave SE 230th Ter SE SE 45th Pl 231st Ave SE 231st Pl SE SE 53rd St SE 47th St SE 48th St LAUGHING JACOBS SE 52nd St 234th Ave SE SE 51st Pl SE 54th Pl SE 47th Way 235th Ave SE 236th Ave SE Issaquah Pine Lake Rd SE 238th Pl SE 238th Way SE SE Issaquah-Fall City Rd SE 45th St SE 46th Pl 240th Ave SE 240th Ave SE 240th Pl SE SE 45th Pl SE 44th Pl 242nd Ave SE SE 45th St 242nd Ave SE 243rd Ct SE SE 47th St NW Sammamish Rd LS-5B NW Sammamish Rd 221st Pl SE SE 56th St 229th Ave SE 230th Ave SE 232nd Ave SE SE 58th St SE 57th St SE Black Nugget Rd LS-4A I-90 Ramp I-90 Ramp NW Maple St NW Newport Way INT-3 LS-9 7th Ave NW NW Locust St INT-4 5th Ave NW NW Juniper St NW Gilman Blvd SE 62nd St I-90 Fwy 224th Ave SE SE 64th Pl I-90 Ramp 229th Ave SE 230th Ave SE NE Locust St NE Juniper St SE Issaquah Fall City Rd INT-4 SE 59th St 239th Ave SE NE High St 9th Ave NE Highlands Dr NE E Dr SE 60th St NE Park Dr 11th Ave NE 12th Ave NW Kalmia Pl NW NW Inneswood Dr NW Firwood Blvd Kalmia Pl NW Jasmine Pl NW Indigo Pl NW NW Everwood Dr NW Everwood Ct NW Datewood Dr Newport Way NW Dorado Dr NW NW Holly St School District Rd School District Rd 3rd Ct NW 3rd Ave NW 2nd Ave NW NW Dogwood St Rainier Blvd N Front St N NE Gilman Blvd I-90 Fwy NE Dogwood St 1st Ave NE I-90 Ramp 3rd Ave NE SE 74th St I-90 Ramp I-90 Ramp I-90 Fwy I-90 Fwy LEGEND: EXISTING LIFT STATION FUTURE LIFT STATION LOW PRESSURE FORCE MAIN FORCEMAINS & TIGHTLINES GRAVITY FUTURE SEWER MAINS: GRAVITY FORCE MAIN LOW PRESSURE FORCE MAIN FUTURE DISTRICT SEWER SERVICE BOUNDARY KING COUNTY PARCELS FREEGARD CAPITAL IMPROVEMENT PROJECT LEGEND: INT-X INTERCEPTOR PROJECT ( > 8" DIAMETER ) LS-X LIFT STATION & FORCEMAIN PROJECT ³ ,400 Feet SAMMAMISH PLATEAU WATER & SEWER DISTRICT WASTEWATER COMPREHENSIVE PLAN FIGURE 7-13 FREEGARD BASIN M:\SammPlat\11475 WW Comp Plan\GIS\Basins_CIP\Freegard.mxd

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43 CHAPTER 7 CAPITAL IMPROVEMENT PLAN TABLE 7-1 Capital Improvements Plan Schedule Funding Information Schedule and Cost of Improvements (1) Project Project Funding Funding Source Type year CIP Total Project No. Description Purpose of Project 6-year CIP Total Regional Projects R-1A North Diversion Project Growth King County CIP $0 $0 $0 $0 $0 $0 $0 $14,330,000 $14,330,000 $0 $14,330,000 R-1B North Diversion Delay -Project Growth GFC CIP $0 $0 $0 $1,394,500 $1,700,100 $1,751,100 $4,845,700 $6,844,300 $11,690,000 $0 $11,690,000 R-2 Control Structure Modifications O&M, Improvement 50%R&R, 50% GFC CIP $0 $30,000 $120,000 $600,000 $0 $0 $750,000 $0 $750,000 $0 $750,000 Interceptor and Transmission Main Projects INT-1 East Lake Sammamish Parkway SE Gravity Sewer Replacement at Montage, 12 Inch to 15 Inch Deficiency R&R CIP $0 $0 $0 $0 $0 $0 $0 $0 $0 $352,163 $352,163 INT-2 Issaquah-Pine Lake Road and 234 th Avenue SE Gravity Sewer Main Replacement, 8 Inch to 12 Inch Deficiency R&R CIP $0 $0 $231,658 $0 $0 $0 $231,658 $0 $231,658 $0 $231,658 INT st Place SE and SE 56 th Street Gravity Sewer Main Replacement, 12 Inch to 18 Inch Growth GFC CIP $0 $0 $144,604 $297,885 $0 $0 $442,489 $0 $442,489 $0 $442,489 INT-4 SE 62 nd St and E Lake Sammamish Pkwy SE Gravity Sewer 50%Rates, Deficiency Main Replacement, 8 In to 12 In or Slope Adj. 50% GFC CIP $0 $0 $0 $494,098 $0 $0 $494,098 $0 $494,098 $0 $494,098 INT-5 South Plateau Conveyance Parallel Interceptor, 20 Inch Growth GFC CIP $0 $0 $0 $0 $0 $0 $0 $6,300,000 $6,300,000 $0 $6,300,000 INT-6 South Pine Lake Interceptor Replacement th Avenue SE to 219 th Avenue SE, 10 Inch and 12 Inch O&M R&R CIP $0 $0 $0 $0 $582,535 $600,011 $1,182,547 $0 $1,182,547 $0 $1,182,547 Collection System Projects CS-1 Water's Edge Lift Station Collection Sewer System Improvement LFC CIP $0 $0 $0 $0 $0 $0 $0 $1,600,000 $1,600,000 $0 $1,600,000 CS-2A Camden Park Shallow Sewer Replacement Deficiency GFC CIP $450,000 $0 $0 $0 $0 $0 $450,000 $0 $450,000 $0 $450,000 CS-2B Camden Park Gravity Connection Improvement LFC DEA $0 $649,801 $669,295 $0 $0 $0 $1,319,097 $0 $1,319,097 $0 $1,319,097 Critical Link Projects CL-1 South End East Lake Sammamish Parkway/Place Crossing, Gravity Sewer - 8 Inch Improvement LFC ULID/DEA $0 $0 $0 $0 $0 $0 $0 $184,481 $184,481 $0 $184,481 CL-2 Upper Waverly Connecting Sewer, Gravity Sewer - 8 Inch Improvement LFC ULID/DEA $0 $0 $0 $0 $434,728 $0 $434,728 $0 $434,728 $0 $434,728 CL-3 Louis Thompson Sewer Main, Gravity Sewer - 8 Inch Improvement LFC CIP $0 $0 $0 $0 $0 $1,194,052 $1,194,052 $0 $1,194,052 $0 $1,194,052 CL-4A Sammamish Town Center Initiation Support (SE 4 th and Other Gravity) Improvement LFC CIP $0 $0 $0 $281,377 $579,637 $0 $861,014 $0 $861,014 $0 $861,014 CL-4B Sammamish Town Center Collection System Improvement LFC ULID/DEA $0 $0 $0 $0 $997,500 $1,027,400 $2,024,900 $5,291,200 $7,316,100 $11,041,200 $18,357,300 Lift Station and Force Main Projects LS-1 Central Lake Sammamish Lift Station Improvement - 3 rd 22%R&R, Growth/Improvement Pump Installation 78% GFC CIP $190,594 $5,000 $0 $0 $0 $0 $195,594 $0 $195,594 $0 $195,594 LS-2A North Lake Sammamish Lift Station Improvement, Phase I 22%R&R, Growth/Improvement - 3 rd Pump Installation 78% GFC CIP $190,594 $5,000 $0 $0 $0 $0 $195,594 $0 $195,594 $0 $195,594 LS-2B North Lake Sammamish Lift Station Improvement, Phase II - Capacity and Force Main Upgrade Growth GFC CIP $0 $0 $0 $0 $0 $0 $0 $4,300,869 $4,300,869 $0 $4,300,869 LS-3 Water's Edge Lift Station Improvement LFC CIP $51,940 $0 $0 $0 $0 $0 $51,940 $1,500,000 $1,551,940 $0 $1,551,940 LS-4A Flow Meter Installation Program (Todds Landing, Pine 50%Rates, O&M/Growth Lake Glen, Beaver Lake Estates, Freegard) 50% GFC CIP $0 $25,000 $25,000 $30,000 $30,000 $0 $110,000 $0 $110,000 $0 $110,000 LS-4B Flow Meter Replacement Program (Beaverdam, Aldarra, Central Lake) O&M/Growth R&R CIP $0 $10,000 $10,000 $10,000 $0 $0 $30,000 $0 $30,000 $0 $30,000 LS-5A Freegard Lift Station Replacement, Phase I - Wet Well Growth GFC CIP $0 $0 $0 $548,686 $565,146 $0 $1,113,832 $0 $1,113,832 $0 $1,113,832 LS-5B Freegard Lift Station Replacement, Phase II - Mechanical, 22.5%R&R, O&M/Growth Electrical and Flow Meter 77.5% GFC CIP $0 $0 $0 $0 $304,309 $313,439 $617,748 $0 $617,748 $0 $617,748 LS-24 Trossachs Lift Station Pump Replacement O&M R&R CIP $15,000 $40,000 $0 $0 $0 $0 $55,000 $0 $55,000 $0 $55,000 LS-6 Inglewood Odor Evaluation Study 50%Rates, 50% GFC CIP $0 $70,000 $227,560 $0 $0 $0 $297,560 $0 $297,560 $0 $297, year CIP Total 2013 WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-17 DECEMBER 2014

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45 CHAPTER 7 CAPITAL IMPROVEMENT PLAN TABLE 7-1 (continued) Capital Improvements Plan Schedule Funding Information Schedule and Cost of Improvements (1) Project No. Description Purpose of Project Project Funding Source Project Funding Type year CIP Total year CIP Total year CIP Total LS-7 Tiburon Lift Station Improvement LFC CIP $0 $0 $0 $0 $0 $0 $0 $1,886,627 $1,886,627 $0 $1,886,627 LS-8 NOT USED $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 LS-9 North Fork Lift Station Improvement LFC ULID/DEA $0 $0 $0 $0 $0 $0 $0 $0 $0 $735,693 $735,693 LS-10 Broadmoore Estates Lift Station Improvement LFC ULID/DEA $0 $0 $0 $0 $0 $0 $0 $2,644,229 $2,644,229 $0 $2,644,229 LS-11 Treefarm East Lift Station Improvement LFC ULID $0 $0 $0 $0 $0 $0 $0 $0 $0 $795,575 $795,575 LS-12 Aldarra Golf South Lift Station Improvement LFC DEA $0 $0 $0 $0 $0 $0 $0 $0 $0 $1,140,609 $1,140,609 LS rd Lift Station Improvement LFC DEA $0 $0 $0 $0 $0 $0 $0 $662,902 $662,902 $0 $662,902 LS-14 Loree Estates Lift Station Improvement LFC ULID $0 $0 $0 $0 $0 $0 $0 $0 $0 $2,352,505 $2,352,505 LS-15 Inglewood Lift Station Capacity Evaluation & Pump Upgrade for Buildout Growth GFC CIP $0 $0 $0 $0 $0 $0 $0 $0 $0 $323,790 $323,790 LS-16 Wesley Cove Lift Station Improvement LFC DEA $0 $0 $0 $0 $0 $0 $0 $581,730 $581,730 $0 $581,730 LS-17 Swan Ridge Interim Lift Station Interim Improvement LFC ULID/DEA $0 $0 $0 $0 $0 $0 $0 $614,937 $614,937 $0 $614,937 LS-18 High Country 3 Lift Station Improvement LFC ULID $0 $0 $0 $0 $0 $0 $0 $843,693 $843,693 $0 $843,693 LS-19 High Country Entrance Lift Station Improvement LFC ULID $0 $0 $0 $0 $0 $0 $0 $0 $0 $950,983 $950,983 LS-20 Providence Ridge Lift Station Improvement LFC DEA $0 $0 $0 $0 $0 $0 $0 $614,937 $614,937 $0 $614,937 LS-21 Tibbetts Station 1 Lift Station Improvement LFC ULID $0 $0 $0 $0 $0 $0 $0 $712,097 $712,097 $0 $712,097 LS-22 Sunnyhills Estates 2 Lift Station Improvement LFC ULID $0 $0 $0 $0 $0 $0 $0 $696,109 $696,109 $0 $696,109 LS-23 French SE 8th Lift Station Improvement LFC DEA $0 $0 $0 $0 $0 $0 $0 $1,543,492 $1,543,492 $0 $1,543,492 Miscellaneous Projects M-1 NOT USED $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 M-2 District Headquarters Site Expansion - 60% Water/40% 50%Rates, Improvement Sewer ( % to Rates) 50% GFC CIP $164,000 $800,000 $686,000 $0 $0 $0 $1,650,000 $0 $1,650,000 $0 $1,650,000 M-3A New Vehicles - 60% Water/40% Sewer (2013 Rates/R&R 25% Rates / Improvement Split based on actual) 75% R&R CIP $92,660 $84,000 $90,000 $98,000 $104,000 $112,000 $580,660 $689,169 $1,269,829 $2,265,527 $3,535,356 M-3B New Equipment - 60% Water/40% Sewer ( % Rates / Improvement Rates/R&R Split based on actual) 50% R&R CIP $49,330 $44,800 $56,000 $56,000 $56,000 $56,000 $318,130 $280,000 $598,130 $504,000 $1,102,130 M Seismic VA 60% Water/40% Sewer + Seismic Retrofit Program 100% Water Study Rates CIP $36,000 $6,000 $0 $0 $0 $0 $42,000 $0 $42,000 $0 $42,000 M-5 Environmental Protection Program - 60% Water/40% Sewer Study Rates CIP $0 $0 $28,840 $12,600 $0 $0 $41,440 $0 $41,440 $0 $41,440 M-6 Security Improvements - 60% Water/40% Sewer Improvement Rates CIP $0 $16,960 $17,480 $18,000 $18,560 $19,120 $90,120 $19,680 $109,800 $0 $109,800 M-7 NOT USED $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 M-8 NOT USED $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 M-9 Sewer Comprehensive Plan Update (Every 6 Years) Study GFC CIP $135,000 $15,000 $0 $0 $48,700 $451,400 $650,100 $0 $650,100 $0 $650,100 Operation & Maintenance Projects OM-1 District Headquarters Maintenance Program - 60% Water/40% Sewer O&M Rates CIP $13,105 $66,000 $18,000 $16,000 $0 $0 $113,105 $0 $113,105 $0 $113,105 NOT USED $0 $0 $0 OM-2 Repair and Replacement Program (Individual projects listed for ) O&M R&R CIP $0 $0 $0 $0 $0 $0 $0 $2,459,748 $2,459,748 $6,415,924 $8,875,672 OM-3 Grinder Pump Replacement Program O&M R&R CIP $310,000 $160,000 $160,000 $160,000 $160,000 $0 $950,000 $360,000 $1,310,000 $1,320,000 $2,630,000 OM-4 Cities Overlay & Road Improvements O&M Rates CIP $37,500 $37,500 $37,500 $37,500 $37,500 $37,500 $225,000 $0 $225,000 $0 $225, WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-18 DECEMBER 2014

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47 CHAPTER 7 CAPITAL IMPROVEMENT PLAN TABLE 7-1 (continued) Capital Improvements Plan Schedule Funding Information Schedule and Cost of Improvements (1) Project No. Description Purpose of Project Project Funding Source Project Funding Type year CIP Total year CIP Total year CIP Total Total Costs of Sewer System Projects $2,422,776 $1,848,836 $2,223,294 $3,579,444 $4,788,487 $16,626,649 $31,489,485 $32,670,346 $64,159,831 $21,121,480 $85,281,311 $62,819,515 $23,278,427 $86,097,942 Sub Total: Funded by District Sources = General Facility Improvements (GFCs) Growth GFC CIP $882,327 $485,300 $673,884 $2,803,119 $2,564,786 $2,445,415 $9,854,831 $17,445,169 $27,300,000 $323,790 $27,623,790 Sub Total: Funded by District Sources = Capital Deficiency, O&M, Replacement (R&R) Imp R&R CIP $489,376 $290,200 $557,158 $571,500 $917,005 $782,535 $3,607,774 $3,476,624 $7,084,398 $10,039,232 $17,123,630 Sub Total: Funded by District Sources = Capital Operations (Rates) O&M, Imp, Study Rates CIP $312,081 $639,760 $621,600 $398,649 $125,060 $112,620 $2,209,770 $331,972 $2,541,742 $818,382 $3,360,124 Sub Total: Funded by District Sources = Local Facility Improvements (LFCs) Improvement LFC CIP $51,940 $0 $0 $281,377 $579,637 $1,194,052 $2,107,007 $4,986,627 $7,093,633 $0 $7,093,633 Sub Total: Funded by Other Sources - DEA or ULID = Local Facility Improvements (LFCs) Improvement LFC ULID or DEA $0 $649,801 $669,295 $0 $1,432,227 $1,027,400 $3,778,724 $14,389,807 $18,168,531 $17,016,564 $35,185,095 King Sub Total: Funded by King County = Regional CIP Growth CIP $0 $0 $0 $0 $0 $0 $0 $14,330,000 $14,330,000 $0 $14,330,000 County TOTAL $1,735,723 $2,065,061 $2,521,938 $4,054,646 $5,618,715 $5,562,022 $21,558,105 $54,960,199 $76,518,304 $28,197,968 $104,716,272 (1) Project costs are escalated based on a 3 percent annual rate of interest inflation and applied to projects implemented after Project costs for 2013 are not escalated WASTEWATER COMPREHENSIVE PLAN AND GENERAL SEWER PLAN 7-19 DECEMBER 2014