Olsson Associates

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Grand Island wastewater project continues to grow

Wednesday, February 13, 2013

Sarah Ferdico, Communications

Grand Island’s wastewater treatment plant and collection system improvements project, which was awarded to the Black & Veatch and Olsson team in 2011, continues to expand. Several miles of large, new trunk collector main are currently being improved, and numerous in-situ upgrades are being made to existing mains.

“We have been very fortunate to assist with Grand Island’s plant improvements, and we’ve got a great team in place to provide the city with efficient and quality solutions,” said Joe Baxter, project manager. “We’ve been given a rare opportunity to rebuild a system inside and out that will benefit Grand Island residents for decades to come, and we’re honored to be a player in making this a reality.”

To date, Olsson staff members have completed the following improvements:

Designed and bid the improvements to Lift Station #7. The improvements consist of removing and replacing the existing block building, pumps, and piping; adding a stand-by generator; and reworking the primary electrical service. Additional improvements include constructing a new valve vault and reworking the influent gravity sewer lines. The project’s construction is scheduled to be complete in May 2013.

Designed and bid the collection system rehabilitation improvements to the existing South Interceptor line and West Interceptor line. The improvements consist of installing approximately 4,430 linear feet of cured in place pipe liner (CIPP) that range in size from 36 inches to 27 inches in pipe diameter. The project is scheduled for completion in June 2013.

Designed and bid the improvements to the collection system interceptor along 5th Street. The project consists of installing approximately 3,790 linear feet of 21-inch gravity sewer line and installing approximately 3,790 linear feet of 15-inch CIPP. The project is scheduled for completion in August 2013.

Designing improvements to the wastewater treatment plant’s headworks. Olsson is working with Black & Veatch to construct a new headworks and screening facility, a new grit facility, and a new flow distribution structure. The construction also will include associated site piping and site work. Olsson’s services on the project design entailed providing site civil, site piping, electrical, geotechnical, automation and technology, and survey services. During construction, Olson will provide construction staking, construction observation, construction administration, and materials testing services. The project is currently scheduled to bid in April 2013.

Designing Phase 1 of the North Interceptor. Olsson is working with Black and Veatch to construct approximately 7,800 linear feet of 54-inch gravity sewer line. The project consists of crossing U.S. Highway 30 (130 linear feet) and the Union Pacific rail line (620 linear feet) via micro-tunneling. The project also includes installing approximately 5,600 linear feet of 24-inch slip line pipe in the existing interceptor sewer line. Olsson’s services consisted of providing survey and geotechnical expertise for the project’s design and assisting with project permitting. During construction, Olson will provide construction staking, construction observation, construction administration, and materials testing services. The project is currently scheduled to bid in March 2013.

Future projects include Phase 2 of the North Interceptor, which will consist of installing approximately 20,500 linear feet of gravity sewer line that ranges in size from 48 inches to 36 inches. Phase 2 is anticipated to be separated into three segments with design completion dates ranging from fall 2013 to fall 2015. Additional collection system rehabilitation improvements are planned for the South Interceptor and West Interceptor, to be bid in fall 2015.

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