• South 208th ST AC Main Replacement
• Lift Station 5B Force Main Replacement

• Lake Desire Watermain Replacement and Low Pressure Sewer Installation
• Cascade Vista Phase 1 AC Main Replacement

South 208th Street AC Main Replacement

This project will replace approximately 1,100 feet of 4 inch asbestos concrete pipe and approximately 7,550 feet of 6' asbestos concrete pipe in South 208th Street from 107th Ave SE to 96th Ave SE and some associated lines southwest of 108th Ave SE & South 208th Street. The pipes were installed in the late 1950's and 1960's and have reached the end of their useful life. We have had several breaks in the area and have determined that the pipe is soft and needs to be replaced. Currently the 6" pipe on South 208th street is shown in our Comprehensive Plan to be increased to 12" and most of the associated lines would increase to 8" for better fire flow.

We are scheduled start construction in July 2009.

Lift Station 5B Force Main Replacement

Deficiencies in the existing west sewer forcemain at the District's Lift Station (LS) #5B necessitate replacement of the sewer forcemain. The existing 12-inch ductile iron forcemain is approximately 4,000 feet long and ties into a gravity system located in SE 196th Street. The deficiencies in the pipe include severe pitting at the bottom of the forcemain pipe, causing the pipe integrity to be compromised. The District has decided to replace the 4,000 feet of existing sewer forcemain with 18-inch and 12-inch HDPE forcemain. The proposed 18-inch HDPE sewer forcemain replacement will start at existing LS #5B, then west in SE 198th Place, and then north in 124th Avenue SE to SE 196th Street. At that point, a 12-inch HDPE sewer forcemain will extend west along SE 196th Street with connection to the existing gravity sewer manhole located west of 119th Avenue SE.

This project is scheduled to begin construction in June 2009 and be completed by October 2009.

Lake Desire Watermain Replacement and Low Pressure Sewer Installations

This project began construction in the June of 2008. The 6" and 8"asbestos concrete water main around the lake was installed in 1965; it was replaced with 8" ductile iron pipe, new water service lines, valves and fire hydrants. Along with this replacement, the District installed a low pressure grinder pump system to convey sewage to an existing gravity sewer system.

Upon completion of this work the roads around the lake were overlaid.

Cascade Vista Phase 1 AC Main Replacement

This project would replace approximately 10,900 feet of 6 inch AC pipe with 8 inch ductile iron and approximately 300 ft of 4 inch AC pipe with 4 inch ductile iron in the Cascade Vista area. The pipes were installed between 1950 and 1961 and have reached the end of their useful life. We have had several breaks in the area and have inspected the pipe at numerous locations. We have determined that the pipe is soft and needs to be replaced.

This project is just starting design and should start construction in early 2010.