Lift Station - Rectangular - 62 ft. long x 7 ft. high x 8 ft. wide. Major bypass of several million gal. per day.
Contact: Wayne Querry, P.E. 303-446-3641
Two large vault/manholes at the WWTP - one rectangular 5 ft. x 14 ft x 12 ft. deep, the other was 7 ft. square x 17 ft. deep. Insituform lined the pipes and we lined the vaults. Major bypass in place, several million gallons per day. Major H2S.
Contact: Bob Moore, PWD 970-350-9321
Sewage Lagoon Splitter Box 8 ft. x 8 ft. x 3 ft deep - as evidenced by photos, the structure was heavily deteriorated due to high H2S levels. Would had to have been replaced if not lined.
Contact - Cal Wilson, Wastewater Collection Supt. 406-844-3881
One m/h 5.5 ft. square x 30 ft. deep. Had a high volume force main. Project featured in June 2003 Trenchless Technology magazine.
Contact - Phil Reeve, P.E., JL Richards and Associates, Ottawa, Ontario 613-728-3571
Gerry Bauer, P.E., author of TT mag article and P.E., Ottawa gbauer@rvanderson.com
Underground rectangular vault beneath street - 14 ft. long x 8 ft. x 8 ft. - major H2S deterioration - had a force main. We rebuilt benches and lined the chimney as well.
Contact: Lance Parris, Wastewater Collection Supt. 727-298-3256
Sykes Creek Wastewater Treatment Plant Headworks - 70 ft. long x 7 ft. high x 4 ft. wide with two 90 degree turns in the channel. Structure was severely deteriorated, even the rebar was partially gone. County personnel were prohibited from walking on top of the structure due to safety concerns about it caving in.
Contact: Scott Heil, Wastewater Collection Supt. 321-264-5070
This sewage pump station was build on the edge of a large lake and since the day it was constructed the lake water has infiltrated into the wet well and gradually gotton worse over the years to the point that there was more infiltration than wastewater being pumped out. This was all due to a sandy lake shore environment which created
many cave ins while the wet well was being constructed causing the concrete rings to not seal properly as well as causing the structure to be leaning several inches away from vertical.
Contact: Ed Russell, Water & Power Department 970-962-3760
City of Kalispell, MT - 2007 "In the summer of 2007 the City of Kalispell, MT found evidence of gasoline in a
natural storm drain detention pond. City crews followed the traces of fuel through a storm drain outfall line to the
intersection of Meridian Road and US 2 (Idaho Street). The fuel had been leaking from gasoline distribution lines at a
nearby convenience store and fuel stop. The fuel had then mixed with groundwater and moved through the soil adjacent to
the storm and sanitary sewer lines. The fuel then entered the sanitary sewer and storm drain systems through cracks and
joints in the manhole barrels and through deteriorated gaskets in the pipeline."
"The City of Kalispell has since completed plans and specifications to perform a total re-line of the sanitary sewer and storm
drain manholes and lines in the area. The project will likely bid after further soil investigations by the Montana Department
of Environmental Quality. In the meantime, the City of Kalispell was concerned about the continued infiltration of the fuel
into the lines, especially during the spring runoff of 2008. The City determined that two manholes were receiving a large
potion of the fuel, and that stopping the infiltration at these two locations would substantially decrease the total volume
of fuel entering the sanitary and storm sewer systems."
"After considering several options to stop the flow of fuel into these manholes, the City chose to use a fiberglass/epoxy and
non-porous membrane liner. SuperTec Infrastructure Technologies installed a liner in the 8-foot diameter storm drain manhole
in January 2008. The sanitary sewer manhole had infiltration occurring around an inlet pipe. To resolve this infiltration,
the City opted to have SuperTec apply a chemical grout to the deteriorated area. The liner and the grout appear to have stopped
the infiltration in these two areas. With spring thaw just a few weeks away, these manholes are prepared to prohibit infiltration
of the seasonally higher groundwater."
Paul Burnham, City Engineer