Delta council last week approved a contract valued at over $1.8 million for the Cliveden Avenue Sanitary Pump Station upgrade project.
Located near Highway 91, the project involves upgrades to the existing pump station, including lining of the existing wet well, a new valve chamber and a new electrical kiosk. The operation of sanitary bypass pumps and generators 24 hours per day will be required during the pump station shutdown to accommodate construction.
Meanwhile, earlier this year, the City of Delta issued a request for proposals for an engineering consultant to come up with proposed better odour mitigation measures for a major sanitary pump station located in a residential area of Ladner.
Built in 1968, the Manor North Sanitary Pump Station, located at 5051 Central Ave., is one of the stations that pumps sanitary flows out of the Ladner area.
The city notes that as the station manages more effluent and is located within a local neighbourhood, odour control has been a concern.
Upgrades were completed in 1983 and one of the odour control means is a biological filter that is located east of the pump station.
Another means for odour control that Delta is carrying out is conducting H2S (hydrogen sulfide) dosing around the upstream.
The pump station also has an UV-based unit inside that helps with odour control, however, the city notes the unit is at the end of its service life, so Delta is seeking other means of odour control that is more efficient and cost effective.
Elsewhere, the Greater Vancouver Sewerage and Drainage District is planning to construct a new air management facility below the Alex Fraser Bridge in Delta.
Delta council this summer endorsed the construction of a facility that would lower hydrogen sulfide emissions from the South Surrey Interceptor and reduce odours and infrastructure corrosion.
Constructed in the 1970s, and to be twinned, the South Surrey Interceptor is a pipe that conveys sewage from South Surrey, White Rock and Langley to the Annacis Island Wastewater Treatment Plant, also located in Delta.
The facility will be approximately 34-to-36 feet in height and include two bio-trickling filter vessels, an activated carbon scrubber vessel, a small building for an electrical room and washroom, as well as other associated process equipment and infrastructure.
The property is located under the Highway 91 approach ramp to the bridge.
A staff report notes that the Ministry of Transportation and Infrastructure issued a permit for most of the new infrastructure, which will be located outside of Delta-owned property and is within the ministry’s right-of-way adjacent to the bridge. However, some of the proposed infrastructure would be within Delta’s property and would exceed the height restriction.
