EDMONTON - The Alberta government has issued a Water Act enforcement order to Associated Aggregates Inc. to restore part of a sand and gravel pit adjacent to the North Saskatchewan River.
The pit must be restored to dry ground surface conditions after an end pit lake was constructed without authorization.
According to a release from the Alberta government, a 2007 Water Act approval allowed for establishment of a single end pit lake at the north end of the Drayton Valley Pit site, but did not authorize a wet excavation at the site's south end. Both site inspections and aerial photography revealed two end pit lakes, including an unauthorized lake with a constructed berm on 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, the statement reads.
Under the order, Associated Aggregates Inc. must submit a remedial plan outlining restoration of the surface ground conditions as described in the original Water Act approval. Remedial action must be taken regarding a constructed berm surrounding the southern end pit lake by Aug. 25.
A final report describing final remedial actions must be submitted by Dec. 15, 2018.