Delridge Basin Sew er System Impr ovemen ts …spu/@drainsew/documents/web...Delridge Basin Sew er...
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Delridge W a y S W Sylvan Way S W SW O r c h a r d S t 16th Ave SW Home Depot SW Myrtle St SW Myrtle St 2 4 t h A v e SW CSO 2 FLOW MONITORING UPGRADES N S W E SEWER SYSTEM IMPROVEMENTS DELRIDGE BASIN Project overview Seattle Public Utilities (SPU) is currently constructing a sewer improvement project in your neighborhood. CSO 2, located at the intersection of Delridge Way SW and SW Orchard Street, is one of two Combined Sewer Overflow (CSO) facilities in the Delridge neighborhood undergoing retrofits to reduce overflows of untreated stormwater and sewage into Longfellow Creek. CSO 2 holds excess untreated stormwater and sewage during heavy rainstorms, releasing it once there is capacity in the downstream system to carry it away. The current tank design is inefficient and prone to clogging that can result in more frequent overflows of untreated stormwater and sewage into Longfellow Creek. What does the project include? Improvements to CSO 2 includes: • Installation of an actively-controlled system, including gates, pumps and sensors to better monitor and control the amount of flow that is allowed to enter the downstream sewer system. • Installation of a new ventilation fan over the large storage tank to improve air quality and safety for SPU maintenance crews. In addition to improvements to the CSO 2 facility, SPU is installing 450 feet of new pipe, an underground diversion structure, pedestrian and landscaping improvements on the north side of SW Orchard Street, three new curb ramps at SW Orchard Street and Dumar Way SW, and a new roadside flow monitoring box at the intersection of 24th Avenue SW and SW Myrtle Street. CSO 2 Project area CSO 2 Today The project includes pedestrian and landscaping improvements on the north side of SW Orchard Street Spring 2015
Transcript of Delridge Basin Sew er System Impr ovemen ts …spu/@drainsew/documents/web...Delridge Basin Sew er...
Delridge Basin Sewer System ImprovementsDelridge Basin Sewer System Improvements
Delridge W
ay SW
Delrid
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Way SW
SW Barton St
SW Henderson St
SW Thistle St
SW Holden St
Sylvan W
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SW Orchard St
16th Ave S
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SW Trenton St
SW Barton St
SW Cloverdale St
Chief SealthHigh School
Westwood Village Shopping Center
Home Depot
SW Myrtle StSW Myrtle St
24th
Ave
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CSO 2
FLOW MONITORING UPGRADES
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SEWER SYSTEM IMPROVEMENTSDELRIDGE BASIN
Project overview
Seattle Public Utilities (SPU) is currently constructing a sewer improvement project in your neighborhood. CSO 2, located at the intersection of Delridge Way SW and SW Orchard Street, is one of two Combined Sewer Overflow (CSO) facilities in the Delridge neighborhood undergoing retrofits to reduce overflows of untreated stormwater and sewage into Longfellow Creek.
CSO 2 holds excess untreated stormwater and sewage during heavy rainstorms, releasing it once there is capacity in the downstream system to carry it away. The current tank design is inefficient and prone to clogging that can result in more frequent overflows of untreated stormwater and sewage into Longfellow Creek.
What does the project include?
Improvements to CSO 2 includes:
• Installation of an actively-controlled system, including gates, pumps and sensors to better monitor and control the amount of flow that is allowed to enter the downstream sewer system.
• Installation of a new ventilation fan over the large storage tank to improve air quality and safety for SPU maintenance crews.
In addition to improvements to the CSO 2 facility, SPU is installing 450 feet of new pipe, an underground diversion structure, pedestrian and landscaping improvements on the north side of SW Orchard Street, three new curb ramps at SW Orchard Street and Dumar Way SW, and a new roadside flow monitoring box at the intersection of 24th Avenue SW and SW Myrtle Street.
CSO 2 Project area
CSO 2 Today
The project includes pedestrian and landscaping improvements on the north side of SW Orchard Street
Spring 2015
Delridge Basin Sewer System ImprovementsDelridge Basin Sewer System Improvements
• Construction began in early 2015. Crews are on-schedule for substantial completion in fall 2015.
• Most construction activity is occurring on SPU property, but upgrades to the flow monitoring system, including a new above-ground equipment cabinet, will take place in the right-of-way at 24th Avenue SW and SW Myrtle Street. Crews are also installing a new diversion structure on SW Orchard Street near Dumar Way SW, which will include construction of a new curb and gutter. This work will result in a narrower street after construction is complete.
• Work hours are Monday through Friday, 7 a.m. - 5 p.m., and Saturdays, 9 a.m. - 5 p.m. Crews may occasionally need to work extended hours. We will notify neighbors ahead of any needed schedule changes.
• During construction, traffic will be periodically reduced to one lane on SW Orchard Street near Delridge Way SW. Parking on SW Orchard Street will be eliminated, but will return in a reduced capacity after construction is completed.
Want to learn more?Contact Tara Wong Esteban (SPU Project Manager)
Phone: 206-684-5903 Email: [email protected]
www.seattle.gov/cso/delridge
For interpretation services please call 206-684-5903.Para servicios de interpretación por favor llame al 206-684-5903. Para sa serbisyo ng tagapagpaliwanag, tumawag sa 206-684-5903. Về dịch vụ phiên dịch xin gọi 206-684-5903.
CONCEPTUAL LANDSCAPE DESIGN ILLUSTRATIVE PLAN: CSO 2 - NPDES 168
DELRIDGE CSO RETROFITS, SEATTLE PUBLIC UTILITIES
NOVEMBER 2014
0’ 30’
Scale: 1”= 30’Low growing plants with thorns
Exis ng vegeta on
Exis ng trees limbed up to 8’, typical
Yucca
Street tree, typical
Low maintenance groundcover
Delri
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Way
SW
CSO 2NPDES 168
SW Orchard St
Narrow evergreen tree, typical
Low growing plants with thorns
Decora ve concrete path
Visually striking low-growing evergreen plants, typical
Fence
Low maintenance groundcover
Exis ng retaining wall
CSO 2 Conceptual landscape design
What will you see and hear during construction?
Spring 2015
Improvements to CSO 2 will prevent polluted runoff from harming the fish and other wildlife that call Longfellow Creek home
