CALGARY - The company that owns a pipeline that leaked nearly 3,000 barrels of crude oil into a central Alberta river, fouling shorelines, says its cleanup is complete.

Plains Midstream Canada said in a news release Friday that it will return to the site of leak in the Red Deer River near Sundre next spring or early summer to inspect the sites again.

The Calgary-based company says Alberta Environment and Sustainable Resource Development has approved its restoration efforts and closure of the sites.

The pipeline leak on June 7 fouled shorelines and closed a popular downstream recreational lake to fishing and swimming for weeks this summer.

Plains Midstream says it is still trying to determine what caused the leak.

It also says they are still working on compensation for individuals who have been directly impacted.

Story continues below..

Loading Slideshow...
  • A tiny baby beaver, shown this handout photo from Monday June 11, 2012, who was a victim of last week's pipeline leak into the Red Deer River is being nursed back to health by staff and volunteers at a central Alberta wildlife sanctuary. Carol Kelly of the Medicine River Wildlife Centre near Innisfail, Alta., says Fish and Wildlife officials had asked them to be on standby to help out any animals affected by the disaster. (CP)

  • Crews prepare a boom on the Gleniffer reservoir to stop oil from a pipeline leak near Sundre, Alta., on Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of oil.

  • Oil from a pipeline leak coats a pond near Sundre, Alta., Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipeline leaked between 1,000-3,000 barrels of oil.

  • Plains Midstream Canada vice president Stephen Bart, left, speaks to the media at a command post as crews prepare to clean up an oil pipeline spill near Sundre, Alta., Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of crude.

  • Oil from a pipeline leak coats a pond near Sundre, Alta., Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipeline leaked between 1,000-3,000 barrels of oil.

  • Tracks pass through oil on the banks of the Gleniffer reservoir after a pipeline leak near Sundre, Alta., on Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of oil.

  • A photographer takes photos of oil from a pipeline leak as it coats a pond near Sundre, Alta., Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of oil.

  • Alberta Premier Alison Redford, left, walks past the Gleniffer reservoir, with an oil retaining boom across it, after speaking with reporters about an oil spill from a pipeline leak near Sundre, Alta., Friday, June 8, 2012.

"Plains is committed to the process and will continue to work one-on-one with individuals who have been directly impacted until the claims are resolved. Thank you to area landowners and residents for your continued patience while we work through this process.," the company said in the news release.

A class-action lawsuit has been filed over the spill.

Plains Midstream also says aquatic studies are underway to determine the any potential impact on fish habitats, and the first phase of the long-term monitoring plan is approved and underway.

The company says the final tally on how much oil was spilled is 463,000 litres, or 2,911 barrels.

"With interim closure granted, our long-term monitoring plan is now underway," Stephen Bart, vice president of crude oil operations, said in the news release.

"Our crews have been demobilized but we’ll continue to oversee activities and will return to the area in spring or early summer 2013 to inspect the sites again to ensure restoration is progressing.”

The Red Deer is a popular river for both Albertan and foreign anglers, who come to its waters for important sport fish such as mountain whitefish and brown trout.

Plains Midstream has said water quality in the river has returned to near normal and the impact on wildlife has been minimal. Gleniffer Lake reopened the July long weekend.

Fishing guides and landowners along the river have said they fear the spill may have killed off the insects fish feed on and reduced the number of young fish that survived.

The Alberta government has said scientists want to determine if there are any changes to the age distribution of fish populations.

Fish samples will also be assessed for contaminants and there will be long-term monitoring, the department said in August.

Also on HuffPost:

Loading Slideshow...
  • CFB Cold Lake, CNRL

    A bitumen leak was reported at a Canadian Natural Resources oilsands operation in the weapons range part of the RCAF base in June 2013.

  • CFB Cold Lake, CNRL

    Company officials said the leak - at what it calls its Primrose operation - was caused by faulty machinery at one of the wells, affected an area of approximately 13.5 hectares and released as much as 3,200 litres of bitumen each day.

  • CFB Cold Lake, CNRL

    Preliminary tallies put the death toll from the leak at 16 birds, seven small mammals and 38 amphibians. Dozen were rescued and taken to an Edmonton centre for rehabilitation.

  • CFB Cold Lake

    As of early August 2013, more than 1.1 million litres of bitumen had been pulled from marshlands, bushes and waterways.

  • CFB Cold Lake, CNRL

    Although CNRL could not say when the leak may finally be stopped, it estimates it will likely cost more than $40 million to clean up.

  • <em>Click through for other recent spill in Alberta</em>

  • Plains Midstream

    Little Buffalo band member Melina Laboucan-Massimo scoops up July 13, 2012 what appears to oil from the pond shoreline near the site of a 4.5 million-litre Plains Midstream pipeline leak detected April 29, 2011. Photos taken at the site and released by Greenpeace of Alberta's second-worst pipeline spill suggest at least part of the site remains heavily contaminated despite company suggestions that the cleanup is complete.

  • Plains Midstream Canada

    A boat passes by a boom stretching out to contain a pipeline leak on the Gleniffer reservoir near Innisfail, Alta., Tuesday, June 12, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of sour crude near Sundre, Alberta, on June 7 and flowed downstream in the Red Deer river to the reservoir.

  • Plains Midstream Canada

    Debris pushes up against a boom as it stretches out to contain a pipeline leak on the Gleniffer reservoir near Innisfail, Alta., Tuesday, June 12, 2012.

  • Plains Midstream Canada

    A boom stretches out to contain a pipeline leak on the Gleniffer reservoir near Innisfail, Alta., Tuesday, June 12, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of sour crude near Sundre, Alberta, on June 7 and flowed downstream in the Red Deer river to the reservoir.

  • Plains Midstream

    A boom stretches out to contain a pipeline leak on the Gleniffer reservoir near Innisfail, Alta., Tuesday, June 12, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of sour crude near Sundre, Alberta, on June 7 and flowed downstream in the Red Deer river to the reservoir.

  • Plains Midstream Canada

    A photographer snaps a boom stretching out to contain a pipeline leak on the Gleniffer reservoir near Innisfail, Alta., Tuesday, June 12, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of sour crude near Sundre, Alberta, on June 7 and flowed downstream in the Red Deer river to the reservoir.

  • Plains Midstream Canada

    A boom stretches out to contain a pipeline leak on the Gleniffer reservoir near Innisfail, Alta., Tuesday, June 12, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of sour crude near Sundre, Alberta, on June 7 and flowed downstream in the Red Deer river to the reservoir.

  • Plains Midstream Canada

    A worker slows traffic while a boom stretches out to contain a pipeline leak on the Gleniffer reservoir near Innisfail, Alta., Tuesday, June 12, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of sour crude near Sundre, Alberta, on June 7 and flowed downstream in the Red Deer river to the reservoir.

  • Plains Midstream Canada

    A no swimming sign along the banks of the Gleniffer reservoir while a boom stretches out to contain a pipeline leak on the lake near Innisfail, Alta., Friday, June 12, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of sour crude near Sundre, Alberta, on June 7 and flowed downstream in the Red Deer river to the reservoir.

  • Plains Midstream Canada

    Oil from a pipeline leak coats a pond near Sundre, Alta., Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipeline leaked between 1,000-3,000 barrels of oil.

  • Plains Midstream Canada

    Oil from a pipeline leak coats a pond near Sundre, Alta., Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipeline leaked between 1,000-3,000 barrels of oil.

  • Plains Midstream Canada

    Oil from a pipeline leak coats a pond near Sundre, Alta., Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipeline leaked between 1,000-3,000 barrels of oil.

  • Plains Midstream Canada

    Tracks pass through oil on the banks of the Gleniffer reservoir after a pipeline leak near Sundre, Alta., on Friday, June 8, 2012. Plains Midstream Canada says one of their non-functioning pipelines leaked between 1,000-3,000 barrels of oil.

  • Enbrige's Athabasca pipeline

    Approximately 1,450 barrels of oil spilled from a pumping station along Enbridge’s Athabasca pipeline in June 2012. The spill occurred approximately 24 kilometres from Elk Point, Alta., a village located 200 kilometres northeast of Edmonton.

  • Lake Wabamun

    Wreckage from the August 3rd train derailment and subsequent oil spill is seen lining the shore of Lake Wabamun on Monday, August 8, 2005, as clean-up continues.

  • Lake Wabamun

    Wreckage and black oil from the August 3rd train derailment and subsequent oil spill are seen lining the shore and waters of Lake Wabamun on Monday, August 8, 2005, as clean-up continues.

  • Lake Wabamun

    White absorbent boom is seen lining the shores of Lake Wabamun, Alberta, as the clean-up effort from the August 3rd train derailment and subsequent oil spill continues on Monday, August 8, 2005.

  • Lake Wabamun

    Wreckage and black oil from the August 3rd train derailment and subsequent oil spill are seen lining the shore and waters of Lake Wabamun on Monday, August 8, 2005, as clean-up continues.

  • Lake Wabamun

    Wreckage and black oil from the August 3rd train derailment and subsequent oil spill are seen lining the shore and waters of Lake Wabamun on Monday, August 8, 2005, as clean-up continues. Lake Wabamun was severely polluted when a train carrying heavy oil derailed on August 3, 2005, spilling much of it's load into the lake.

  • Lake Wabamun

    Rail cars leak bunker fuel oil, meters from summer homes bordering Lake Wabamun, after a freight train derailed, in this August 3, 2005 file photo, near the town of Wabamun, Alta. Canadian National Railway faces an environmental charge stemming from the train derailment and oil spill at a popular Alberta lake last summer.