Froth in the Black River


On 8/19/2007 approximately 6 PM i observed a detergent looking discharge flowing into the Black River just West of the Pumping Station at 550 Monster Road.

From  Ecology album



Update 8/23/07  Apparently this is from natural causes and nothing to worry about.
source: email from:  Benjamin Budka, Water Quality Trouble Call Coordinator, King County Environmental Laboratory

Right now I think it is a natural event.  The following information is what I sent out to interested parties back on Tuesday, August 21, 2007:

I was out at the Black River pump station this morning and talked to Roy Nass, from WTD East Offsite. Roy mentioned he had seen the foam a couple of days ago. While I was there the pumps were off and there was no foam visible on either side of the flood control structure. Roy started pump1, closest to the fish ladder, and the foam appeared almost immediately. I could not detect any odor from the foam as sometimes this can help indicate if it is natural or man-made.


As Trouble Call Coordinator, I track all complaints and receive many reports of "foam" during the month of August. Most foam incidences are naturally occurring events and often related to phytoplankton breaking down and releasing algin, a natural surfactant. In fact, I've seen the Ballard Locks generate tremendous amounts of foam when they open up their spillway.

Foam develops when the surface tension of water molecules are reduced and the water is mixed with the air, therefore producing bubbles. The reduction of water molecules can generally be attributed to surfactants such as natural organic compounds or detergents. The activity of mixing is usually achieved by wave action caused by the wind on lakes, or in this case by the heavy-duty pumps. It appears that the combination of organic compounds from the pond (such as the biodegradation of algae, fish, other aquatic macrophytes, and the leaching of soils) are responsible for the large quantities of foam produced during the pumping operations at the Black River pump station.

I would not be surprised that in a few weeks this type of foam incidence is greatly reduced.

 Thanks

I don't want to be a pest but i don't know of any other way to take this sign seriously.

From ecology

Update 9/6/07 a Blue Huron inspects the water ...

From Urban Wildlife

Tags

  1. ecology
  2. renton
  3. 2007
  4. black river
  5. pollution
  6. my pictures
  7. events
  8. huron

Comments


Seth says

I went out there again yesterday and of course the discharge was not still happening.  The water on that side of the pumping station was stagnant and approximately a foot lower than on Saturday. as the picture to the left shows.  

I've drawn an white arrow showing from where the discharge was comming. 


Seth says
M 2007-08-22 13:14:45 7920
Methinks it might have just been the drugs & stuff you folks are smoking these days. Please see this article in sciam.

Actually you might be on to something here ... i found some cocane leaking from the Concrete Recycling outfit uphill of the river ...

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