The Alberta government has issued a Water Act enforcement order to Associated Aggregates Inc. The company is required to restore a portion of a sand and gravel pit adjacent to the North Saskatchewan River to dry ground surface conditions after an end pit lake was constructed without authorization.

A 2007 Water Act approval permitted the establishment of a single end pit lake at the north end of the Drayton Valley Pit site, and did not authorize a wet excavation in the south end of the site. Aerial photography and site inspections confirmed the existence of two end pit lakes, including an unauthorized lake with a constructed berm at the south end of the site. The unauthorized south-end pit lake, which is below the water table, may affect the Town of Drayton Valley’s water supply.

Under the order, the responsible parties must:

  • Submit a remedial plan that outlines restoration of the surface ground conditions as described in the original Water Act approval, including remedial action for a constructed berm surrounding the southern end pit lake that may be altering the flow of water, by Aug. 25, 2017;
  • Conduct the work described in the approved Remedial Plan, according to the approved schedule of implementation, unless otherwise authorized in writing by the Regional Compliance Manager; and
  • Submit a final report describing final remedial actions by Dec. 15, 2018.

 

An end pit lake, similar to this one from an abandoned quarry, was not authorized as part of Associated Aggregates' agreement with the province.
An end pit lake, similar to this one from an abandoned quarry, was not authorized as part of Associated Aggregates’ agreement with the province.
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