(WSB photo from Sunday)

On the third day of cleanup at an oil-contaminated White Center stormwater-retention pond, we’ve just obtained the newest information from state Ecology Department spokesperson Larry Altose:

Workers made progress on Saturday and Sunday, rescuing oiled waterfowl and removing oil from the pond near 13th Avenue Southwest and Southwest 100th Street in unincorporated King County.

The Washington Department of Ecology is coordinating the response, in cooperation with the Washington Department of Fish and Wildlife and the King County Department of Natural Resources and Parks. Ecology has hired a spill response contractor and a wildlife rescue organization for the cleanup.

The spilled material appears to be about 50 to 100 gallons cooking oil that entered the pond via the county stormwater drainage system. County and Ecology staff have been tracing storm drains to search for the source of the spill. No additional oil has entered the lake since a citizen first reported the spill late Friday afternoon.

Cooking and other edible oils, while less toxic to wildlife, still cause environmental harm. When birds contact the oil it coats the feathers so that the animals lose insulation and buoyancy. Oil damages habitat for other aquatic life, reducing oxygen levels and creating physical impacts on the water surface and shoreline.

Crews from Focus Wildlife International have captured 14 oiled birds, four mallard ducks and 10 Canada geese. The birds received initial treatment near the scene in the organization’s special trailer. They were transported for further treatment at the Progressive Animal Welfare Society’s Wildlife Rescue Center in Lynnwood.

Workers hope to capture approximately 20 other oiled birds, some of which have flown to other ponds, lakes or fields in the area. No wildlife deaths have been reported.

Meanwhile, other workers continue to tend oil spill cleanup materials placed in the pond to collect the oil, which has spread into a slick over much of the surface. Crews succeeded in preventing oil from draining out of the pond, which flows into nearby Hicklin Lake.

The cleanup has reduced the amount of oil seen on the pond over the past two days. Ecology’s contractor will measure the amount of oil recovered in cleanup materials to better determine the size of the spill.

The on-site response effort, which involved 25 people on Saturday and 18 on Sunday, continues to step down to about 9 responders today.

Our first report, on Saturday, is here; our Sunday followup is here. As we’ve noted previously, this county-owned area of unincorporated King County had already been the subject of extensive cleanup efforts – focused on the land, rather than the water, because of problems with encampments and drug use during the non-rainy months – here’s a report from last month, published on our partner site White Center Now.