Cathy Saunders' 10/11/05 email re: sedimentation on Stockwell Manor site.
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    Note: We sent the following email to Craig Carinci of Fairfax County's Sites Inspection Division and to our Supervisor, Joan DuBois, after observing problems with runoff from the Stockwell Manor site following storms on Oct. 7 and 8, 2005. Adrienne Whyte of the Mclean Citizens Organization kindly provided an independent confirmation of our observations. We received a prompt reply from Mr. Carinci promising to have someone look into the problem, and a longer reply from Rosemary Ryan, Joan DuBois' legislative aide, the next day. For photos and a more detailed account of this episode, including the cleanup, click here .


    From:       Catherine E. Saunders

    Subject:    Erosion problems at Stockwell Manor Construction Site


    Tuesday, October 11, 2005 8:37:21 AM

     Mr. Carinci--

    I enjoyed your presentation on erosion and sediment controls at the Green Breakfast a year or so ago, and kept your card.  Could you please pass on the following message about problems with erosion/sedimentation on the Stockwell Manor construction site to the appropriate inspector?  The site is located in Dranesville District, in the West Falls Church area, on the block bounded by Great Falls St. (which the site abuts), Haycock Rd., Kirby Rd., and Westmoreland St.  The watershed is Pimmit Run, and I believe the tax map number is 40-2. 

    After the storm of October 7 and 8, 2005, I'm concerned about the adequacy of the erosion and sedimentation controls on the Stockwell Manor construction site.  I observed the site and the areas downstream on the afternoons of Friday 7 Oct. and Monday 10 Oct., and saw considerable evidence of erosion and sedimentation.  On October 7, a flow of orange-colored water from the site was evident as far downstream as the place where Pimmit Run flows under Westmoreland St., and the contrast with more normal-colored flows was evident at each confluence upstream (see pictures at  and ).  On October 10, a day after the storm, deposits of sediment were very much evident throughout the length of the western fork of Burke's Spring Branch, and in the area of Pimmit Run immediately downstream of its confluence with Burke's Spring Branch.  Sedimentation was  particularly evident in the culvert that runs under Kirby Rd., on the Brooks Square development's stormwater pond (where deposits in places reached almost 3" deep), and on McLean Greens' common land (see pictures at ).  I realize that it's impossible to prevent all erosion and sedimentation from a construction site, but, at least to my admittedly untutored eye, the problem seems to go well beyond "colored water.'  It is certainly causing serious problems for neighbors downstream, especially those at Brooks Square, who will find it difficult to mow their stormwater pond until the deposits of clay there are removed. 

    I would also appreciate any information you can offer about what happened: Were the required erosion and sediment controls not in place? (With a few minor exceptions, super silt fences, sediment basins, and the like appeared from my vantage points on adjoining streets and parcels to be in place and functioning, but I couldn't see all of the site.)  If they were in place, how can they be redesigned or otherwise strengthened to prevent future incidents of this kind?  As you'll see from the links to pictures below, I'm in the process of chronicling, and trying to explain, the events for the website of a group concerned with health of the local subwatershed, the Friends of Burke's Spring Branch.  I'd also like to pass on any information available to neighbors in the Brooks Square and McLean Greens communities, who are understandably concerned about the influx of mud on their common land.  I can be reached at this email address, and/or at 703-534-4494. 


    Thank you,

    Cathy Saunders

    Friends of Burke's Spring Branch


    (cc’d to Joan DuBois, Dranesville District Supervisor; Nancy Hopkins, Dranesville Planning Commissioner; Frank Crandall, Dranesville Environmental Quality Advisory Council Representative; and selected members of McLean Citizens Association, Friends of Burke’s Spring Branch, and nearby HOAs)





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