Section 5 Existing Collection System_201404161712462116

5.3 University Place West Sub-basin The University Place West Sub-basin is located within the City of University Place and is bordered to the west by Puget Sound, to the north by 19th St

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Pierce County Public Works and Utilities – Sewer Utility

Unified Sewer Plan Update

Section 5

Existing Collection System

5.1 Wastewater Collection System for the Chambers Creek Basin

5.2 Conveyance System Backbone - Existing Interceptors & Force Mains

5.22 Metering Locations and Flow Monitoring

5.23 Collection System Operations & Maintenance

5.24 Infiltration and Inflow

5.27 Large On Site Sewer Systems (LOSS) Maintained By Pierce

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Section 5 – Existing Collection System

Section 5 documents the existing wastewater collection system of the Chambers Creek Regional Wastewater Treatment Plant (WWTP)

5.1 Wastewater Collection System for the Chambers Creek Basin

The Utility owns the collection facilities in Parkland, Spanaway, Frederickson, Graham, South Hill, the cities of University Place and Lakewood, and the City of DuPont The City of Tacoma and Town of Steilacoom own the collection facilities within their respective jurisdictions

5.1.1 Chambers Creek Conveyance System

The conveyance system has 58,960 (2009) connections and includes approximately 658 miles of public sewer and 172 miles of private sewer pipelines ranging in size between 8-inches (for local collection) and 84-inches in diameter (for the largest interceptor), with 15,964 manholes to access the sewer lines The system service area

is 117 square miles or 74,880 acres in total area The County’s Wastewater Utility also operates and maintains

95 pump stations with four new stations in design, and 825 residential grinder pumps in the Chambers Creek Basin (basin)

5.1.2 City of Tacoma – Western Slopes

The Western Slopes service area lies adjacent to the east shore of Tacoma Narrows and extends from North 26th Street in Tacoma to the City of University Place on the south and Pearl Street on the east The system service area is 1,804 acres in total area and drains northeasterly toward the Tacoma Narrows The area

formerly flowed to the now decommissioned Tacoma Western Slopes WWTP a primary wastewater treatment plant operated by the City of Tacoma Wastewater from this service area was transferred to the WWTP in 1990 with the construction of two pump stations and conveyance pipes The Western Slopes service area is pumped

to the Chambers Creek conveyance system by the South 27th Street and 19th and Grandview Pumping Station

5.1.3 City of University Place

The City of University Place is located east of Puget Sound, west of the City of Fircrest and 56th Street West, south of South 19th Street West and north of Chambers Creek The system service area is 5,323 acres in total area Portions of University Place were originally served by the City of Tacoma Western Slopes Treatment Plant and the Westside Sewer District In the 1970s two (2) Pierce County ULIDs, 70-1 and 76-1, incorporated much

of the remainder of University Place into the Pierce County sewer service area

In 1990 the City of Tacoma closed the Western Slopes Treatment Plant and transferred its service area flows to the WWTP for treatment In 1992, Pierce County assumed the Westside Sewer District, which served the northwestern portion of University Place

There are several pockets in University Place, approximately 980 residences, a total of 1800 developed and undeveloped properties without sanitary sewer service The largest pocket lies in the vicinity of the 67th Avenue West Interceptor south of Fircrest to Cirque Drive, between Alameda and Orchard Street The City of University Place has conducted feasibility studies to connect these remaining parcels to sanitary sewers

5.1.4 Town of Steilacoom

The Town of Steilacoom’s present wastewater service area encompasses nearly 1,850 acres, of which

approximately 1,050 acres is sewered The town entered into a 50-year sewage service and rate agreement with Pierce County in 1987 Pierce County provides treatment services; Steilacoom is responsible for collection and maintenance

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Section 5

Existing Collection System

5.1.5 City of Lakewood

The City of Lakewood, excluding the areas known as American Lake Gardens and Tillicum, is located within Utility Local Improvement District (ULID) 73-1, which is the core of the sewer service basin American Lake Gardens and Tillicum were originally intended to send flows to the Tatsolo Point WWTP on the Joint Base Lewis McChord military reserve American Lake Gardens and Tillicum, containing 968 single family and 1,124 multi-family homes will continue to be served by both individual and community on-site sewer systems until the City of Lakewood completes an extension to allow both Tillicum and American Lake Gardens to connect to the sewer system These flows are proposed to be directed to the Chambers Creek Regional Wastewater Plant in late 2011.The system service area is 11,041 acres in total area

5.1.6 DuPont - Northwest Landing

The City of DuPont is located in the southwest corner of the Basin and has contracted with Pierce County to provide sewer service to the Northwest Landing development (ULID 90-4) In October of 2000, the Northwest Landing Offsite Wastewater Facilities Project was completed and wastewater is now conveyed to the WWTP The Historic Village of DuPont was connected and flows began to be sent to the WWTP in 2008 Pierce County now provides for collection, transmission, and treatment for flows from the Northwest Landing Development (Villages I, II, III, IV, and V), Industry, Town Center, and the Historic Village of DuPont The system service area

is 3,727 acres in total area

5.1.7 Eastern Basin - Brookdale, Midland, Parkland, Spanaway, Graham, Frederickson, Cascadia,

and South Hill

The eastern portion of the Chambers Creek - Clover Creek Basin contains the largest part of the planning area The 1986 Sewerage General Plan Update defined the East Basin to include Midland, the drainage of Clover Creek from presently sewered areas of Parkland, Brookdale, and Spanaway, south to Rocky Ridge and east past Frederickson and Meridian Avenue (SR161)

In 1989, the Pierce County Council approved the inclusion of additional areas to the east of Meridian Avenue into the Chambers Creek - Clover Creek East Basin The South Hill Sewer District, in unincorporated Pierce County, was added to the Chambers Creek Regional WWTP system in 1996 The connection to the Chambers Creek Regional WWTP system is located at the end of the East Basin Interceptor The system service area is 58,965 acres in total area

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5.2 Conveyance System Backbone - Existing Interceptors & Force Mains

Interceptors and force mains form the backbone of the conveyance system Pierce County typically installs interceptor lines 15” in diameter and larger and force mains 8” in diameter and larger These are the trunk and large branches of the system into which the wastewater from local collection systems flow

Existing interceptors, force mains, and pump stations for the WWTP sewer service basin are described in Tables 5.3-1 through 5.19-1 and illustrated in Figures 5.1-1 through 5.19-1

A complete inventory of the Utility’s sewer conveyance system may be found in USP Appendix K

Pipe diameter ranges signify that the size of the pipeline changes over the course of its length Each table and corresponding figure is broken down by sewer service sub-basin Figure 5.1 identifies the general location of each sub-basin

The sub basins include:

 University Place West Sub-basin

 University Place East Sub-basin

 East Basin Sub-basin

 Rainier Terrace Sub-basin

 Hylebos Sub-basin

 Brown’s Point Sub-basin

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!

Chambers Creek Regional WWTP

Tacoma Central WWTP

Cascadia

*Note: Pierce County Lake Tapps Service Area Removed per Resolution R-2001-189 (Transfer Agreement #01-1269 Dated 03/29/02)

Fox Island

McNeil

Island

Pierce/King Coun

ty B oun dary

Roy

Pacific Ruston

9 6

10

17 3

16

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 Unified Sewer Plan

PIERCE COUNTY, WASHINGTON

Pierce County Sub-Basins/Service Areas

! Wastewater Treatment Plants

Other Service Area Tributary to Chambers Creek WWTPContract Service Area

Sewerage Sub-basin Area/Service AreasSub-Basin Name

1 University Place West

2 University Place East

11 Spanaway and Roy

Pierce County Sewer Service Area Tributary

to the C/O TacomaPotential Pierce County Service Area Currently Connected to Other WWTP

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5.3 University Place West Sub-basin

The University Place West Sub-basin is located within the City of University Place and is bordered to the west

by Puget Sound, to the north by 19th Street West, to the south by Chambers Creek and to the east at

approximately Bridgeport Way The sub-basin is made up of the University Place North ULID 70-1, Soundview ULID 76-1, Westside Sewer District, numerous developer extensions, and flows transferred from the City of Tacoma’s Western Slope Sub-basin

Flows received from the City of Tacoma connect to the Chambers Creek Regional WWTP collection system at approximately 19th Street West and Grandview Drive The University Place West Sub-basin consists of

approximately 3,990 acres The size and linear footage of mains in this sub-basin is identified in the table below and is graphically represented in Figure 5.3-1

Table-5.3-1 University Place West Sub-basin Existing Conveyance System 1

Interceptor Pipelines

Facility Name Size (inches) Length (feet)

Current ADWF (MGD) 4

Tributary to the City of Tacoma collection system.

Chambers Creek Tunnel

The Chambers Creek Tunnel (Tunnel) is the primary transmission facility for the entire Chambers Creek

Regional WWTP sewer service basin Within the University Place West Sub-basin the Tunnel consists of 7,433

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Section 5

lineal feet of 72-inch gravity sewer line that starts at Manhole #12367 and ends just south of Chambers Creek Road and 75th Street West The Tunnel was constructed as part of the Lakewood/Parkland ULID 73-1 under the Chambers Creek Interceptor project in 1983/1984 A phased rehabilitation of the Tunnel system, beginning with portal installation, was begun in 2000-2001 with project completion planned for 2011

Day Island Trunk

The Day Island Trunk consists of 1,691 lineal feet of 15-inch gravity sewer It conveys flows from Day Island, located in the northwest section of the University Place West Sub-basin, to the Marina Pump Station located at South 19th Street West and Day Island Way This trunk line was constructed as part of the University Place North ULID 70-1 project in 1972/1973 A study has been funded to investigate how best to repair/replace this trunk line

Grandview Drive Interceptor

The Grandview Drive Interceptor consists of 9,600 lineal feet of 30-inch gravity sewer The interceptor, running along Grandview Drive from Heitman Way west to 64th Street West, transports flows from the Tacoma Western Slope Basin as well as flows from the western portion of University Place West Sub-basin These flows

discharge into the Chambers Creek Tunnel at the Drop Structure located at 64th Street West and Chambers Creek Road West The interceptor was constructed under the University Place North/Western Slope Turnaround project in 1988/1989

Sunset Drive Trunk

The Sunset Drive Trunk consists of 2,710 lineal feet of 15-inch gravity collector sewer and serves the north central portion of the sub-basin.The line discharges to the City of Tacoma at 19th Street West and Sunset Drive These flows eventually discharge to the Tacoma Western Slope pump station and flow back through the Grandview Drive interceptor The pipeline was constructed as part of the University Place North ULID 70-1 project in 1972/1973

Tacoma Western Slope Force Main

The Tacoma Western Slope Force Main consists of 9,835 lineal feet of 20 and 24-inch force main The force main runs south from Grandview Drive near 19th Street West to Grandview Drive and Heitman Way West in the University Place West Sub-basin It transports flows from the Tacoma Western Slope Sub-basin and the

northern part of the University Place West basin before discharging to the Grandview Drive Interceptor The force main was constructed as part of the University Place North/Western Slope Turnaround project in

1988/1989

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Grandview Drive Interceptor

Chambers Creek Tunnel

PS01

PS65

PS70 PS66 PS62

PIERCE COUNTY, WASHINGTON University Place West Sub-Basin

DISCLAIMER

University Place West Sewerage Sub-basin Conveyance System

Date: December 2010

Figure 5.3-1

NNTS°

Municipal BoundaryState, Federal or County RouteWater Features

Sewerage Sub-basin Area

Gravity Collectors14" and smaller gravity sewersGravity Transmission Pipelines15" and greater gravity sewersTransmission Force Mains7" and smaller force mainsTransmission Force Mains8" and greater force mains

Private Sewer LinesTransmission Siphon Mains

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Section 5

5.4 University Place East Sub-basin

The University Place East Sub-basin consists of approximately 1,700 acres and is located within the City of University Place and is bordered to the west by Bridgeport Way, to the north by 27th Street West, to the south by Chambers Creek and to the east by Lakewood Drive and Orchard Streets The size and linear footage of mains

in this sub-basin are identified in the table below and is graphically represented in Figure 5.4-1

Table 5.4-1 University Place East Sub-basin Existing Conveyance System 1

Interceptor Pipelines

The 67th Avenue Interceptor consists of 7,608 lineal feet of 15 to 18-inch gravity sewer The interceptor begins

at the intersection of 65th Avenue West and Cirque Drive, travels north and west through residential streets and easements to 47th Street West and 67th Avenue West, and then parallels 67th Avenue West where it terminates

to the west of 38th Street West and 67th Avenue West The pipeline was constructed under the Stonewood developer extension in 1977/1978, the Roman Ridge developer extension in 1978, the Cirque Drive ULID 78-1 project in 1980/1981, and the 67th Avenue West Interceptor developer extension SWLE #151887

A portion of the interceptor was replaced in 1995 under the Cirque Drive ULID Line 6 Replacement project It serves the northern portion of the sub-basin The flows from this interceptor discharge to the Cirque Drive Interceptor

Cirque Drive Interceptor

The Cirque Drive Interceptor consists of 2,910 lineal feet of 15 to 18-inch gravity sewer The interceptor begins

at the intersection of Alameda Avenue West and Cirque Drive, travels west along 56th Street West and

terminates at 54th Street Court West and 67th Avenue West The interceptor collects flows from the central portion of the University Place West sub-basin The pipeline was constructed as part of the Stonewood

developer extension in 1977/1978 and flows from the interceptor discharge to the Leach Creek Interceptor

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Leach Creek Interceptor

The Leach Creek Interceptor consists of 3,404 lineal feet of 30-inch pipeline It begins in an easement located east of Bridgeport Way and south of Alameda Avenue, then travels to the north and east where it terminates at

56th Street West and Alameda Avenue This interceptor is the primary transmission line for the entire sub-basin The pipeline was constructed as part of the Leach Creek Interceptor project in 1987 The flows from the

interceptor discharge to the Chambers Creek Tunnel

The Chambers Creek Tunnel is the primary transmission facility for the entire Chambers Creek Regional WWTP sewer service basin Within the University Place East Sub-basin the Tunnel consists of 4,526 lineal feet of 72-inch gravity sewer that starts just east of Bridgeport Way near 67th Avenue West, through an easement

paralleling Bridgeport Way to the east and terminates at the city limits of the City of University Place and City of Lakewood The Tunnel was constructed as part of the Lakewood/Parkland ULID 73-1 under the Chambers Creek Interceptor project in 1983/1984 In this sub-basin the Tunnel receives flows from the Leach Creek

Interceptor A phased rehabilitation for relining the interior surface of the Tunnel began in 2000-2001 with project completion planned for 2011

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31ST ST W

64TH ST W

REGENTS BL VD

ELECTRON WY

37TH ST W

ONYX DR S W

PS64 PS74

PS76

PS16

PS31

PS89 PS14

PS12

PS13 PS02

PS65

PS70

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

PIERCE COUNTY, WASHINGTON University Place East Sub-Basin

DISCLAIMER

University Place East Sewerage Sub-basin Conveyance System

Date: December 2010

Figure 5.4-1

°NNTS

Pump Stations

!

Private Sewer Lines

Pierce County Sewer Service Area Tributary

to the C/O Tacoma, Pierce County, OTHER WWTPOther Service Area Tributary to Chambers Creek WWTPPotential Pierce County Service Area Currently

Connected to Other WWTP

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5.5 Oakbrook Sub-basin

The Oakbrook Sub-basin is located in the City of Lakewood It is bordered to the west by Puget Sound, to the north by Chambers Creek, to the south by the Fort Steilacoom Golf Course and to the east by 93rd Avenue Court West and consists of approximately 134 acres The size and linear footage of mains in this sub-basin are identified in the table below and is graphically represented in Figure 5.5-1

The conveyance system within the Oakbrook Sub-basin consists of small diameter gravity and force mains that primarily serve residential development, the Oakbrook Sub-basin discharges downstream of the energy

dissipater at the Chambers Creek Regional WWTP via a 4-inch and 6-inch siphon main

The sanitary sewer pipelines serving the Oakbrook Sub-basin were constructed as a developer extension in two phases The first phase was originally connected to a community on-site sewer system and were transferred the sewer system once the Lakewood/Parkland ULID 73-1 sewer lines were installed The remaining lines that serve the sub-basin were installed in 1985

Table 5.5-1 Oakbrook Sub-basin Existing Conveyance System

Interceptor Lines

No Interceptor lines within this Sub-basin

Small Collectors Size (inches) Length (feet)

1 Wastewater Collections Maintenance Pierce County, for pump station data

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Oakbrook Sub-Basin

DISCLAIMER

Oakbrook Sewerage Sub-basin Conveyance System

Date:December 2010

Figure 5.5-1

NNTS

°

Other Service Area Tributary to Chambers Creek WWTP

Pump Stations

!

Waste Water Treatment Plants

!

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5.6 Lakewood West Sub-basin

The Lakewood West Sub-basin is located in the City of Lakewood It is bordered to the west by Puget Sound, to the north by Chambers Creek, to the south by Lake Steilacoom and the Town of Steilacoom and to the east by Gravelly Lake and American Lake and consists of approximately 4,277 acres The Town of Steilacoom connects

to the Chambers Creek Regional WWTP collection system at the treatment plant’s energy dissipator The size and linear footage of mains in this sub-basin are identified in the table below and is graphically represented in Figure 5.6-1

Table 5.6-1 Lakewood West Sub-basin Existing Conveyance System 1

ULID 90-4 Interceptor

5

0.605

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Section 5

Pump Stations 1

No Name Type Location in (gpm) Capacity 2 AWWF

(MGD) 3 ADWF

(MGD) 4

Wastewater Collections Maintenance Pierce County, for pump station data

2 All pump stations are duplex pump systems except PS53 – Lake City which is a triplex pump system

3 Average Wet Weather Flows are the average flows taken from station data Except where noted, pump station data is based on pump run time

4

Average Dry Weather Flows are the average flows taken from station data Except where noted, pump station data is based on pump run time

5 Pump station data based on flow meters.

Lake City Pump Station – Force Main

The Lake City Pump Station Force Main consists of 2,933 lineal feet of 14-inch pressure sewer The Lake City Pump Station is a wet well/dry well pump station with odor control The pump station has a capacity of 1,250 gallons per minute The pump station pumps wastewater from the Lake City Interceptor in the southwest portion

of the sub-basin to the Phillips-Hipkins Interceptor The pump station was constructed as part of the

Lakewood/Parkland ULID 73-1 under the Lakewood Pump Stations Phase I project 1984/1985

Lake City Interceptor

The Lake City Interceptor consists of 7,336 lineal feet of 10 to 24-inch gravity sewer It begins just east of the intersection of 88th AVCT SW and 116th Street SW, travels west to the intersection of Holden Road and 116thStreet SW It collects flows to the Lake City Pump Station, where the interceptor heads to the west along Forest Avenue, then at 93rd Avenue SW it turns south to Washington Boulevard, then from there it goes west and north until it terminates at Holden Road and 116th Street SW The Lake City interceptor was constructed as part of the Lakewood/Parkland ULID 73-1, Lake City Area Schedule B project in 1984 The interceptor collects flows from the southwestern portion of the Lakewood West Sub-basin These flows discharge into the Phillips-Hipkins Interceptor

Phillips-Hipkins Interceptor

The Phillips-Hipkins Interceptor consists of 18,802 lineal feet of 18 to 36-inch gravity sewer The interceptor begins just west of the intersection of Onyx Drive SW and Phillips Road SW, and then continues south along Phillips Road to Steilacoom Boulevard, then west along Steilacoom Boulevard to 83rd Avenue SW where it goes south along 83rd Avenue and terminates just west of the intersection of Idlewood Road SW and 112th Street SW The interceptor was constructed as part of the Lakewood/Parkland ULID 73-1 under the Phillips-Hipkins

Interceptor project (1983/1984) and the Lake City Area Schedule A project (1984) The interceptor is the primary transmission main for the sub-basin These flows continue through the Phillips-Hipkins in the Lakewood East Sub-basin

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ULID 90-4 DuPont Interceptor

The ULID 90-4 Interceptor begins with 8,644 lineal feet of 18 to 36-inch gravity main at 83rd

Avenue and Steilacoom Boulevard in the City of Lakewood and travels west to Farwest Drive From the intersection of Farwest Drive and Steilacoom Boulevard the pipeline continues south along Farwest Drive as a single 3,770 lineal foot 26-inch low pressure main In front of Lakes High School the pipeline connects to twin 22-inch

pressure mains 4,197 lineal feet in length where they eventually leave the sub-basin just west of 106th Avenue Court SW and 112th Street This pipeline was constructed as part of the Northwest Landing ULID 90-4 project in 1999-2000 and transfers flows from the ULID 90-4 Interceptor from the DuPont sub-basin to the Phillips-Hipkins Interceptor

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PS18 PS89

PS60 PS68

PS63

PS58 PS52

PS53

PS73

PS51

PS71 PS72

R SW

ZIR CO

Lakewood West Sub-Basin

DISCLAIMER

Lakewood West Sewerage Sub-basin Conveyance System

Date: December 2010

Figure 5.6-1

NNTS°

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5.7 Lakewood East Sub-basin

The Lakewood East Sub-basin consists of approximately 5,584 acres and is located primarily in the City of Lakewood It is bordered to the west by Lake Steilacoom and Gravelly Lake, to the north by 64th Street West, to the south by Pacific Highway South and Joint Base Lewis McChord and to the east by I-5 and South Tacoma Way The size and linear footage of mains in this sub-basin is identified in the table below and are graphically represented in Figure 5.7-1

Table 5.7-1 Lakewood East Sub-basin Existing Conveyance System 1

Facility Name Size (inches) Length (feet) Interceptor Lines

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Section 5

Table 5.7-1 Lakewood East Sub-basin Existing Conveyance System 1

Avondale Pump Station

The Avondale Pump Station is a wet well/dry well station with odor control The pump station has a design capacity of 1,200 gallons per minute It pumps flows from the Clover Creek Interceptor in the south central portion of the sub-basin to the Custer Interceptor The pump station was constructed as part of

Lakewood/Parkland ULID 73-1 under the Lakewood Pump Stations Phase I project in 1984/1985

Bridgeport Interceptor

The Bridgeport Interceptor consists of 23,235 lineal feet of 15 to 54-inch gravity sewer The interceptor begins at Bridgeport Way and Meadow Park Road and continues south through the City of Lakewood, along Bridgeport Way where it terminates to the southwest of the intersection of Bridgeport Way and Pacific Highway SW The

interceptor was constructed as part of the Lakewood/Parkland ULID 73-1 under the Bridgeport Interceptor project (1981/1982) and the Bridgeport Area Schedule C (1984) It is the primary transmission interceptor for the entire sub-basin The flows from the interceptor discharge to the Chambers Creek Tunnel

Spanaway Loop PS Bypass Interceptor Phase III

The Spanaway Loop Pump Station Bypass Interceptor Phase III (IS99-03) will be an extension of the existing 72-inch Spanaway Loop Bypass Interceptor The bypass of the Spanaway Loop Pump Station will allow it to be removed from service The 72-inch, 6,367-foot (1.2 miles) long gravity pipeline will expand transmission capacity across Interstate-5 to handle future flows from the sub-basins to the east The interceptor extension will continue east on 112th Street SW, then south on Steele Street and Spanaway Loop Road to 116th Street South It is then continued in the Bypass Interceptor Project on the west side of Interstate 5

The Chambers Creek Tunnel is the primary transmission facility for the entire Chambers Creek Regional WWTP sewer service basin Within the Lakewood East Sub-basin the Tunnel consists of 2,900 lineal feet of 54 and 72-inch gravity sewer that starts at the city limits of the City of University Place and City of Lakewood and continues south where it terminates at Bridgeport Way and Meadow Park Road The Tunnel was constructed as part of

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the Lakewood/Parkland ULID 73-1 under the Chambers Creek Interceptor project in 1983/1984 It receives flows from the Bridgeport Interceptor and the Phillips-Hipkins Interceptor and eventually discharges to the Chambers Creek Regional WWTP

Custer Interceptor

The Custer Interceptor consists of 11,409 lineal feet of 21 to 24-inch gravity sewer, the Avondale Pump Station, and 470 feet of 14-inch pressure sewer The interceptor begins at the intersection of Custer Road and

Bridgeport Way, then continues to the south and terminates at the Avondale Pump Station located at the

intersection of Meadow Road SW and Avondale Road SW The pipeline was constructed as part of the

Lakewood/Parkland ULID 73-1 under the Custer Area project in 1979/1980 The interceptor collects flows from the south central portion of the Lakewood East sub-basin These flows discharge into the Bridgeport Interceptor

Clover Creek Interceptor

The Clover Creek Interceptor consists of 10,588 lineal feet of 15 to 24-inch gravity sewer The interceptor begins

at the intersection of Meadow Road SW and Avondale Road SW at the Avondale Pump Station, and then continues to the south and east where it terminates at 120th Street SW and Woodbine Lane SW The pipeline was constructed as part of the Lakewood/Parkland ULID 73-1 under the Clover Creek Area project in

1984/1985 The interceptor collects flows from the south central portion of the Lakewood East sub-basin These flows discharge into the Custer Interceptor

Flett Creek Trunk

The Flett Creek Trunk consists of 1,655 lineal feet of 15-inch gravity sewer The trunk begins at the intersection

of Custer Road and Bridgeport Way, and then continues east to 60th Avenue W, turns south down 60th Avenue, then at 78th Street W turns east and terminates at the intersection of 78th Street W and Burgess Street West The pipeline was constructed as part of the Lakewood/Parkland ULID 73-1 under the Bridgeport Schedule A project in 1983/1984 The trunk collects flows from a small area of the northeast portion of the sub-basin These flows discharge into the Bridgeport Interceptor

Lakeview I Interceptor

The Lakeview I Interceptor consists of 3,634 lineal feet of 15 to 18-inch gravity sewer The interceptor begins at the intersection of Bridgeport Way and Filbert Lane SW, continues to the east and terminates just north of the intersection of Lakeview Avenue SW and Pacific Street SW The pipeline was constructed as part of the

Lakewood/Parkland ULID 73-1 under the Bridgeport Area Schedule B project in 1983/1984 The interceptor collects flows from the eastern portion of the Lakewood East sub-basin These flows discharge into the

Bridgeport Interceptor

Lakeview II Interceptor

The Lakeview II Interceptor consists of 4,082 lineal feet of 15 to 18-inch gravity sewer The interceptor begins at the intersection of Bridgeport Way and 108th Street W, continues to the south and east, terminating at the intersection of 111th Street West and Halcyon Road SW The pipeline was constructed as part of the

Lakewood/Parkland ULID 73-1 under the Bridgeport Area Schedule C project in 1984 The interceptor collects flows from the eastern portion of the Lakewood East sub-basin These flows discharge into the Bridgeport Interceptor

McChord Gate Interceptor

The McChord Gate Interceptor consists of 2,356 lineal feet of 15 to 18-inch gravity sewer The interceptor begins at the intersection of Bridgeport Way and Pacific Highway SW, continues to the southwest, and

terminates at Pacific Highway SW and New York Avenue SW The pipeline was constructed as part of

Lakewood/Parkland ULID 73-1 under the Bridgeport Area Schedule D project in 1984 The interceptor collects flows from the southeastern portion of the Lakewood East Sub-basin south of I-5 These flows discharge into the Bridgeport Interceptor

Phillips-Hipkins Interceptor

The Phillips-Hipkins Interceptor consists of 2,915 lineal feet of 36-inch gravity sewer and 3,558 feet of 14 to inch triple barrel siphon main The interceptor was constructed as part of the Lakewood/Parkland ULID 73-1

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18-Section 5

under the Phillips-Hipkins Interceptor project in 1983/1984 The interceptor collects flows from the western portion of the Lakewood East sub-basin These flows discharge into the Bridgeport Interceptor and the

Lakewood West Sub-basin

Seeley Lake Interceptor

The Seeley Lake Interceptor consists of 2,202 lineal feet of 15-inch gravity sewer The interceptor begins at the intersection of Steilacoom Boulevard and Lakewood Drive SW, and then continues south along Lakewood Drive terminating at 98th Street SW The pipeline was constructed as part of the Lakewood/Parkland ULID 73-1 under the Bridgeport Schedule A project in 1984 The interceptor collects flows from the eastern portion of the

Lakewood East sub-basin These flows discharge into the Steilacoom Boulevard Interceptor

Steilacoom Boulevard Interceptor

The Steilacoom Boulevard Interceptor consists of 7,138 lineal feet of 36-inch gravity sewer The interceptor begins at the intersection of Bridgeport Way and Steilacoom Boulevard, continues to the east along Steilacoom Boulevard, and continues through the South Tacoma Sub-basin to where the Burlington Northern Railroad intersects Steilacoom Boulevard The interceptor was constructed as part of the Lakewood/Parkland ULID 73-1 under the Bridgeport Interceptor project in 1981/1982 The interceptor collects flows from the eastern portion of the Lakewood East sub-basin and also transfers flows from the South Tacoma Sub-basin These flows

discharge into the Bridgeport Interceptor

Spanaway Loop By-Pass Interceptor

The Spanaway Loop By-Pass Interceptor consists of 12,405 lineal feet of 42 to 84-inch gravity sewer The interceptor begins at the intersection of 111th Street SW and Bridgeport Way, then moves east along 111thStreet, crosses under I-5 at 112th Street South and terminates in 112th Street just east of 34th Avenue South This pipeline was constructed as part of the Spanaway Loop Bypass, Schedule A project in 1994 and the under the Lakewood/Parkland ULID 73-1, Bridgeport Area Schedule C project in 1984 It includes a 54” crossing under I-5 The interceptor transfers flows from the eastern portions of the Chambers Creek Regional WWTP sewer service basin These flows discharge into the Bridgeport Interceptor

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McChord Gate Interceptor

Spanaway Loop Bypass Interceptor

Lakeview II InterceptorLakeview I Interceptor

Steilacoom Boulevard Interceptor

Seeley Lake Interceptor

Flett Creek Trunk

PS59

PS48

PS46 PS55

PS50

PS43

PS47

PS41 PS40

PS42

PS65 PS70 PS66 PS62

PS67 PS69

PS61 PS60

PS68 PS63

PS58 PS52

CUST

ER RSW

S STEEL

AV SW

Lakewood East Sub-Basin

DISCLAIMER

Lakewood East Sewerage Sub-basin Conveyance System

Figure 5.7-1

NNTS

°

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Section 5

5.8 DuPont Sub-basin

The DuPont Sub-basin consists of approximately 3,727 acres and is located to the west and north of the Historic Village of DuPont It is bordered to the west by Puget Sound, to the north and south by the Joint Base Fort Lewis McChord Air Field and to the east by Steilacoom Road The Historic Village of DuPont is included in the sub-basin and is under an existing contract for sewer services The size and linear footage of mains in this sub-basin is identified in the table below and are graphically represented in Figure 5.8-1

Table 5.8-1 DuPont Sub-basin Existing Conveyance System 1

- 5

Northwest Landing Pump Station

The Northwest Landing Pump Station is a wet well/dry well pump station with odor control The pump station consists of four pumps, 3 centrifuge pumps and 1 submersible pump, with a capacity of 1950/2400 gallons per minute respectively The station pumps flows through the ULID 90-4 Interceptor from the DuPont Sub-basin to the Lakewood West Sub-basin where it connects with the Phillips-Hipkins Interceptor The Northwest Landing pump station was constructed under the Northwest Landing ULID 90-4 in 1999/2000

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DuPont Interceptor

The DuPont Interceptor consists of 14,324 lineal feet of 15 to 36-inch gravity sewer It is a compilation of all the interceptor pipelines that serve the DuPont area The flows discharge into the DuPont Pump Station The interceptor pipeline has been constructed under various developer extension projects

ULID 90-4 Interceptor

The ULID 90-4 Interceptor consists of 25,687 lineal feet of twin 22-inch pressure sewer pipelines This pipeline was constructed as part of the Northwest Landing ULID 90-4 project in 1998-2000 It transfers flows from the DuPont Pump Station to the Lakewood West Sub-basin

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NT RD SW

SOUTH DR

CEN

TER DR

CENTER DR

PS06

HASKE

LL STBAR KS DAL

E AV

ULID 90-4 InterceptorDuPont Interceptor

DuPont Sub-Basin

DISCLAIMER

DuPont Sewerage Sub-basin Conveyance System

Date: December 2010

Figure 5.8-1

NNTS

°

Gravity Collectors14" and smaller gravity sewersGravity Transmission Pipelines15" and greater gravity sewersTransmission Force Mains7" and smaller force mainsTransmission Force Mains8" and greater force mainsPrivate Sewer LinesPump Stations

!

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5.9 South Tacoma Sub-basin

The South Tacoma Sub-basin consisting of approximately 4,733 acres of which 211 acres is designated Rural Service Area and is located in the South Tacoma and Midland area It is bordered to the west by approximately South Tacoma Way and to the east by 22nd Avenue East The northern and southern boundaries vary as

represented in Figure 5.2-1 with the extreme northern boundary at 72nd Street East and the extreme southern boundary located at 121st Street East The size and linear footage of mains in this sub-basin are identified in the table below and are graphically represented in Figure 5.9.1

Table 5.9-1 South Tacoma Sub-basin Existing Conveyance System 1

nd Street

th Avenue

Midland Pump Station

The Midland Pump Station is a submersible pump station with a capacity of 800 gallons per minute per pump The pump station transfers wastewater from the Midland ULID trunk into the South Tacoma Sub-basin through the Midland Interceptor The pump station was constructed under the Midland Interceptor project in 1996/1997

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Section 5

South Tacoma Interceptor

The South Tacoma Interceptor consists of 15,775 lineal feet of 36-inch gravity sewer The interceptor begins at South Tacoma Way and 96th Street SW, then proceeds to the east where it reaches Ainsworth Street South, continues south to 104th Street South, turns east to South Sheridan Avenue, then heads south along South Sheridan to 108th Street South and then follows 108th Street South where it terminates at 8th Avenue This pipeline was constructed as part of the Lakewood/Parkland ULID 73-1 under the South Tacoma Way Area Sewer project (1979/1980) and the Parkland No 1 project (1979/1980) The interceptor collects flows from the western portion of the sub-basin These flows discharge into the Steilacoom Boulevard Interceptor

Midland Trunk

The Midland Trunk consists of 10,848 lineal feet of 15 to18-inch gravity sewer and 5,680 lineal feet of 10-inch pressure sewer The interceptor begins at McKinley Avenue East and 107th Street East, then proceeds to the north where it reaches 96th Street East, continues east to Amhurst East, turns north to 91st Street East, and then heads north along Golden Given Road where it terminates at to 80th Street The pipeline was constructed under the Midland Trunk Phase I project (1996) and the Midland Trunk Phase II project (1997) (Pump Station and Force main) The interceptor collects flows from the eastern portion of the sub-basin (Midland ULID Trunk) The flows from the interceptor discharge to the Parkland II Interceptor

Midland ULID Trunk

The Midland ULID Trunk consists of 3,272 lineal feet of 15-inch gravity The pipeline begins at Midland Pump Station located at 72nd Street East and 21st Avenue East, and then proceeds to the south where it terminates at

80th Street East and 22nd Avenue East The pipeline was constructed as part of the Midland Sanitary Sewer System ULID 80-2 project in 1982/1983 The pipeline collects flows from the northeastern portion of the sub-basin The flows from the trunk sewer discharge to the Midland Interceptor.

Parkland II Interceptor

The Parkland II Interceptor consists of 13,216 lineal feet of 15 to 30-inch gravity sewer The interceptor begins

at 108th Street South and 10th Avenue South, then proceeds easterly along 108th Street to Golden Given Road, then proceeds north where it reaches 103rd Street East, continues to the north where it terminates at 14th

Avenue East and 97th Street East The pipeline was constructed as part of the Lakewood/Parkland ULID 73-1 under the Parkland No 1 Sewer project (1979/1980) and the Parkland No 2 Sewer project (1982/1983) It is a primary transmission main that collects flows from the central area of the basin and also transfers flow from the Midland Interceptor and Golden Given force main The flows from the interceptor discharge to the South

Tacoma Interceptor

Parkland III Interceptor

The Parkland III Interceptor consists of 3,530 lineal feet of 18 to 30-inch gravity sewer The interceptor begins

116th Street East and 8th Avenue South, and then flows north along 10th Avenue South where it discharges to the South Tacoma Interceptor located at 108th Street South This interceptor was constructed as part of the Lakewood/Parkland ULID 73-1, under the Parkland No 3 project in 1983/1984 The interceptor collects flow from the south-central portion of the sub-basin

Steilacoom Boulevard Interceptor

The Steilacoom Boulevard Interceptor consists of 1,784 lineal feet of 36-inch gravity sewer The interceptor begins at Burlington Northern Railroad on Steilacoom Boulevard, and then proceeds to the east where it

reaches South Tacoma Way, continues south to Sales Road, and terminates at Sales Road and 108th Street South This pipeline was constructed as part of the Lakewood/Parkland ULID 73-1 under the Steilacoom

Boulevard Division 2 Sewer project (1981/1982) and the South Tacoma Way Area Sewer projects (1979/1980) The interceptor collects flows from the western portion of the sub-basin and transfers flow from the South

Tacoma Interceptor These flows eventually discharge into the Bridgeport Interceptor (Lakewood East basin)

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Steilacoom Boulevard Interceptor

South Tacoma Interceptor

PS77 PS44

PS43

PS47

PS41 PS40

South Tacoma Sub-Basin

DISCLAIMER

South Tacoma Sewerage Sub-basin Conveyance System

Figure 5.9-1

NNTS

°

Pump Stations

!

Private Sewer Lines

Other Service Area Tributary to Chambers Creek WWTPPierce County Sewer Service Area Tributary

to the C/O Tacoma, Pierce County, OTHER WWTPPierce County Rural Sewer Service Area

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Section 5

5.10 Summit-Waller Sub-basin

The Summit-Waller Sub-basin consists of approximately 195 acres and is located in unincorporated Pierce County The majority of the service area is located in the Lexington Hills development where gravity collector mains and low pressure force mains discharge to Pump Station #22 which transfers the flows via an 8-inch force main to the gravity system located in the South Tacoma Sub-basin A small portion of this area is zoned as Rural Service Area The size and linear footage of mains in this sub-basin are identified in the table below and are graphically represented in Figure 5.10-1

Table 5.10-1 Summit-Waller Sub-basin Existing Conveyance System 1

There are no Interceptor lines within this sub-basin

1

Wastewater Collections Maintenance, Pierce County, for pump station data

2

This pump station is a duplex pump system

3 Average Wet Weather Flows are the average flows taken from station data Except where noted, pump station data is based on pump run time

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8"

PS32 PS22

PS26 PS27

Summit-Waller Sub-Basin

DISCLAIMER

Summit-Waller Sewerage Sub-basin Conveyance System

Date:December 2010

Figure 5.10-1

NNTS

°

Pump Stations

!

Waste Water Treatment Plants

!

Private Sewer Lines

Contract Service AreaOther Service Area Tributary to Chambers Creek WWTPPierce County Sewer Service Area Tributary

to the C/O Tacoma, Pierce County, OTHER WWTPPierce County Rural Sewer Service Area

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Section 5

5.11 Parkland Sub-basin

The Parkland Sub-basin consists of approximately 4,197 acres of which 67 acres is designated Rural Service Area and is located in unincorporated Pierce County It is bordered to the west by Joint Base Fort Lewis and McChord Air Field and Spanaway Loop Road, to the north generally by 121st Street East (with the northwest portion of the boundary extending all the way to SR 512), to the south by Spanaway Lake and 152nd Street East and to the east by 13th Avenue East The size and linear footage of mains in this sub-basin are identified in the table below and are graphically represented in Figure 5.11-1

Table 5.11-1 Parkland Sub-basin Existing Conveyance System 1

Brookdale Interceptor

The Brookdale Interceptor (also referred to the Parkland-Brookdale Interceptor) consists of 15,911 lineal feet

of 21 to 72-inch gravity sewer It is a continuation of the Brookdale Interceptor that flows through the

Brookdale Sub-basin In the Parkland Sub-basin it begins at the intersection of Garfield Street South and

Spanaway Loop Road and continues to the south and east where it ends just west of the Brookdale Golf

Course located on Brookdale Road The Brookdale Interceptor was constructed as part of the

Lakewood/Parkland ULID 73-1 under the Brookdale No.1 Schedule 2 Sewer project (1983/1984) and the

East 131st Street and Brookdale Road East Sanitary Sewer project (1981)

Brookdale II Interceptor

The Brookdale II Interceptor consists of 7,234 feet of 36-inch gravity sewer It begins at 133rd Street East and

“A” Street, moves south along “A” Street to 138th

Street East, then east along 138th Street to 6th Avenue East, then south along 6th Avenue East to where it intersects with Johns Road East, then south easterly along

Johns Road where it ends at Johns Road East and Golden Given Road East It serves the southeastern

portion of the Parkland sub-basin The pipeline was constructed as part of the Lakewood/Parkland ULID 73-1 under the Brookdale No 2 Schedule 2 Sewer project in 1983/1984

Parkland III Force Main

The Parkland III Force Main consists of 3,188 feet of 16-inch pressure sewer It begins at 116th Street South and Spanaway Loop Road, then to 116th Street East where it discharged to the Parkland III Interceptor

located at 116th Street South and 10th Avenue South The force main was installed as part of the

Lakewood/Parkland ULID 73-1 under the Brookdale Number 1 Sewer project in 1983/1984 and has since been abandoned in place for possible future use should demand increase

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Section 5 Existing Collection System_201404161712462116

Browns Point/Dash Point Service Area