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Home My WebLink About20130223 Ver 6_U-2524D Slope Failure_20170616Carpenter,Kristi From: Bailey, David E CIV USARMY CESAW (US) <David.E.Bailey2 @usace.army.mil> Sent: Friday, June 23, 2017 9:51 AM To: Parker, Jerry A; Norton, April R Subject: RE: U-2524D Slope Failure (UNCLASSIFIED) CLASSIFICATION: UNCLASSIFIED Thanks Jerry. I appreciate the quick action on the part of NCDOT and its contractors. I also appreciate the before and after pictures. I plan to visit U-2524D on my next compliance visit. Hope to see you then. -Dave Bailey David E. Bailey, PWS Regulatory Project Manager US Army Corps of Engineers CE-SAW-RG-R 3331 Heritage Trade Drive, Suite 105 Wake Forest, North Carolina 27587 Phone: (919) 554-4884, Ext. 30. Fax: (919) 562-0421 Email: David.E.Bailey2@usace.army.mil We would appreciate your feedback on how we are performing our duties. Our automated Customer Service Survey is located at: http://corpsma pu. usa ce.a rmy. m i I/cm_a pex/f?p=136:4:0 Thank you for taking the time to visit this site and complete the survey. -----Original Message----- From: Parker, Jerry A [mailto:jparker@ncdot.gov] Sent: Friday, June 16, 2017 3:33 PM To: Norton, April R<april.norton@ncdenr.gov>; Bailey, David E CIV USARMY CESAW (US) <David.E.Bailey2@usace.army.mil>; Harper, Aaron A <aaharper@ncdot.gov>; Moon, Chris D<cdmoon@ncdot.gov>; Hayes, Meredith D<mdhayes3@ncdot.gov> Subject: [Non-DoD Source] U-2524D Slope Failure Hello All, Due to the recent rain events (over 2.8 inches over the last two days), NCDOT experienced a slope failure at Site 9 on project U-2524D. It appears that most of the sediment eroded down the slope and deposited on either side of the stream banks behind the silt fence (see slope failure pictures). However, due to the large amount of sediment and rain, the fence was overtopped and undercut in some areas which allowed some sediment to undoubtedly reach the stream based on the thin layers of silt on some of the riprap. There must have been significant velocity during the rain event because the sediment did not appear to severely deposit in any particular areas and evidently washed down stream. I walked several hundred yards downstream of the site and did not notice any significant sediment buildup that would have appeared to come from the site (see repair pictures). NCDOT has repaired the slope and removed the deposited sediment from behind the silt fences (see repair pictures). The slope is also scheduled to be matted and seeded. The silt fence has been repaired or replaced as necessary (see repair pictures). In addition, a berm has been installed at the top of the slope and an additional slope drain has been added to help divide the stormwater and send it to different basins. Please let me know if you have any questions, comments, suggestions or if you would like to visit the site. Jerry Parker Environmental Supervisor Division 7 North Carolina Department of Transportation 336 256 2063 office jparker@ncdot.gov <mailto:jparker@ncdot.gov> 1584 Yanceyville St. P.O. Box 14996 Greensboro, NC. 27415-4996 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties. CLASSIFICATION: UNCLASSIFIED