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Sewer Lining

Sewer Lining  



Contact
Public Works Director Paul Hartwig
Em: phartwig@cpwa.us
Ph: (509)-394-8526

Sewer pipe lining is a process used for repairing and replacing cracked, leaking, backed up and damaged sewer lines. Using a “no dig” trenchless process to avoid yard excavation, sidewalk destruction or digging up trees, sewer lining involves inserting new epoxy-saturated pipe tubing into existing pipes, inflating the tubing and curing it into place with hot air, steam or bluelight LED technology. This results in a new seal lining the walls of existing pipes, replacing broken piping with the potential to last for decades.

How does sewer pipe lining work? Most often targeting the replacement of clay piping, cast iron, concrete, plastic and PVC pipes, the trenchless pipe lining process involves these steps:

  • Sewer Camera Inspection – To confirm position of cracks and compromised pipes
  • Cleaning Existing Pipes – Removing debris and other blockages
  • Measurement of Existing Pipes
  • Preparation of Tube Replacement – The replacement pipe tubing will typically be a felt tube made of fiberglass, polyester or similar materials.
  • Epoxy Impregnation & Inversion of Tubing – The tube piping will be saturated or “impregnated” with an epoxy-resin and then flipped or “inverted” inside-out using an advanced inverter drum so that the epoxy-resin will be on the outside of the tubing, allowing it to be affixed to the walls of the existing pipes.
  • Inserting Tubing Throughout the Compromised Pipes – The tubing will slide throughout the walls of the piping system until in place and ready for curing
  • Curing of Tubing – This is what creates the new seal. Using popular technologies — traditional hot air or steam curing (4-12 hours drying time) or Bluelight LED curing (up to 5 times faster), all moisture is drawn out and the pipes can solidify in place
  • Sewer Flow is Returned to New Pipes – Service to pipes can be restored once the curing process is complete.
The City puts $100,000 in Wastewater Funds away per year to line parts of the wastewater system each year. It is in the annual six-year Capital Facility Plans

The following is the anticipated breakout of sewer lining over the next six-years: 

  • 2021: Scenicview/Mountainview Hill area, Puff Lane, and SE 12th & Broadway (Doing FY 2020 lining that was deferred a year due to contractor inavailability due to COVID. 
  • 2022: SE Birch (4th to 6th)
  • 2023: Rose/C/Ash 
  • 2024: SE 10th & Bade. Also, College & B 
  • 2025: Alley of 8th & 9th between College/Bade. Also Cotter & 11th area. 
  • 2026: Dewey Drive 
The following is a list of wastewater lines that need to be lined within the City due to condition: 

  • Sewer between Rose & C and between College and Cottonwood (862 Feet)
  • Backyards of West Side of College between B & Whitman (900 Feet) 
  • Backyards of SW 1st & SW 2nd between Davis & Academy (800 Feet)
  • Sewer on SE 12th between Broadway and Birch (300 Feet)
  • Sewer in alley between Broadway & Birch and 11th & 12th (293 Feet)
  • Backyards on houses on East Side of Broadway Under Creek (200 Feet)
  • Sewer between College & Puff & between 10th & 12th Under Creek (500 Feet)
  • Hillcrest Extension between 5th & 6th (340 Feet)
  • Brentwood Extension to 8th Under Creek (340 Feet) 
  • Lions Park Under Creek (500 Feet)
  • Alley of 12th & Mountainview between Broadway & Sky (1,600 Feet) 
  • Front yards of Houses on Stanford between Date & Church (670 Feet) 
  • Chickadee to Mockingbird (280 Feet) 
  • Robin & Scenic View South to Mockingbird Under Creek (325 Feet) 
  • Backyards between 2nd & 3rd and between Birch & Date (560 Feet) 
  • Backyards of East Side of College between 4th & 6th (856 Feet) 
  • 1000 Block of SE 12th Newgate to Vista (846 Feet) 
  • Alley of College & Ash between A & Whitman (630 Feet) 
  • Pinewood Lane (210 Feet) 
  • Independence to Freedom (305 Feet) 
  • ALley of Scenic and Sunny between Broadway and Central (900 Feet) 
  • ALley of Sunny and Broadway between Sunny & Central (1,050 Feet) 
  • ALley of Ash & Birch between A & C (615 Feet) 
  • Alley of Birch & Cedar between A & C (615 Feet) 
  • Alley of Whitman & 1st between Bade & Clay (400 feet) 
  • Alley of Ash & Birch between A & Whitman (412 feet) 
  • Alley of 8th & 9th between College & Bade (590 Feet) 
  • Alley of 9th & 10th between College & Bade (605 Feet) 
  • Alley of 3rd & 4th between College & Larch (2,500 Feet)
  • Behind Houses on South Side of 4th between Birch & Date (533 Feet) 
  • Alley of 4th & 5th between Elm & Date (542 Feet) 
  • Alley between Date & Birch south of 6th (300 Feet) 
  • Backyards of Date & Elm between 5th & 8th (340 Feet) 
  • SE 9th between College & Ash (310 Feet) 
  • Alley of College & Broadway between 12th & Sunny (646 Feet) 

Total Footage - 21,615 Feet @ $60 Foot =$1,296,900 Total Need 
Legislative Gateway
City Council:  July 14th, 2020 Award Contract to IronHorse LLC
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