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HomeMy WebLinkAboutRE_ Sediment loss at R-2915 E_followup_part2Carpenter, Kristi From: Hining, Kevin J Sent: Tuesday, January 11, 2022 2:28 PM To: Wanucha, Dave Cc: Hiatt, Todd M Subject: RE: Sediment loss at R-2915 E Attachments: Stat 768 repairsjpg; Stat 778 pipe outlet.pdf Hey Dave, I went by the two sites on R-2915E today that we reported sediment losses at, to check on the fixes/cleanup. The Stat 768 LT (permit site 15A) corrections looked really good. The contractor improved the checks upslope of the pipe outlet and conveyed all of that runoff through a slope drain that directs it into the existing basin. They also fixed the silt fence and SDO by the pipe outlet. Photo attached. The stream looked much better also. At Stat 778 LT (permit site 17A), the sediment I reported was actually collected from the old JS channel —they had not filled it in yet, so it ended up acting like a basin. There was still some water flowing in that old channel when I visited the other day, but that must of just been groundwater that was seeping into breaks in the old pipe, as the JS had already been diverted to the new pipe. Anyhow, I thought it was still receiving some flow from the JS. Our guess is the old pipe is broken and open in several places, allowing groundwater from the recent rain and snow to seep in. Today, there was no flow coming out of the old pipe — they will soon fill the old pipe with flowable fill, which should stop any new seepage. While this is good news, if we got enough rain/sediment loss into the old channel, it could make it into the JS, since this old channel is still connected to the new one. I met with the contractor this morning and they are planning to make a few additional improvements to prevent that from happening (they already had them planned). The plan sheet covering that is attached, so it should clarify. Regardless, we will tidy this spot up and I'll shoot you a finished photo of that later this week (I'll be back out there Thursday). Thanks, Kevin Kevin Hining Division 11 Environmental Supervisor North Carolina Department of Transportation 828-386-7202 cell kihining .ncdot.gov 801 Statesville Rd. PO Box 250 North Wilkesboro, NC 28659 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. From: Wanucha, Dave <dave.wanucha@ncdenr.gov> Sent: Friday, January 7, 2022 12:58 PM To: Hining, Kevin J <kjhining@ncdot.gov> Cc: Hiatt, Todd M <tmhiatt@ncdot.gov> Subject: RE: Sediment loss at R-2915 E Hi Kevin, Sounds like you all have it under control. Thanks for the updates. Send me those pictures next week when all is repaired. Have a good weekend. Dave W. Division of Water Resources 401 & Buffer Transportation Permitting NCDOT Divisions 9 and 11 NC Department of Environmental Quality 336-403-5655 Mobile 336-776-9703 Office Dave.Wanucha@ncdenr.gov NC DEQ Winston Salem Regional Office 450 West Hanes Mill Road, Suite 300 Winston Salem, NC 27106 From: Hining, Kevin J <klhining@ncdot.gov> Sent: Friday, January 7, 2022 12:35 PM To: Wanucha, Dave <dave.wanucha@ncdenr.gov> Cc: Hiatt, Todd M <tmhiatt@ncdot.gov> Subject: RE: Sediment loss at R-2915 E Hey Dave, I spoke to Vannoy regarding the instream sediment cleanup at Stat 768 LT (permit site 15A) and Stat 778 LT (permit site 17A). They removed 17, 5 gallon buckets from the stream yesterday at Stat 768 LT. They indicated 3 buckets of sediment from Stat 778 LT. Their crew is not doing any new earth moving work for the next few days, and are just buttoning up the existing EC measures. We plan to meet with them next week to look at everything and ensure they are doing what is necessary to help prevent similar issues in the future. I will get photos of the corrections they made at these two stations and pass those along to you. Thanks, let me know if you have any questions, and hope you have a good weekend (sounds like a good one to stay inside, and by a warm fire!) Kevi n From: Hining, Kevin J Sent: Thursday, January 6, 2022 1:39 PM To: Wanucha, Dave <dave.wanucha@ncdenr.gov> Cc: Hiatt, Todd M <tmhiatt@ncdot.gov> Subject: Sediment loss at R-2915 E Hey Dave, Hope your holidays went well! After a dry and relatively issue free fall and winter, we recently experienced sediment loss to streams at two stations on R-2915E. The two locations were at Stat 768 LT (permit site 15A) and Stat 778 LT (permit site 17A). We had > 1 inch of rain Sunday evening and into Monday morning (Jan 2-3), which then turned to several inches of snow by Monday morning. As a result of the snow cover following the rain, it was probably difficult for our staff and the contractor to identify problem areas. The snow also prevented the contractor from doing much work on R-2915E during Monday and Tuesday, so there were likely fewer eyes on the ground than normal. Todd Hiatt and I visited the site yesterday to do a routine inspection, and to check on some requests we had made just before the holiday break. By this time, snow had started to melt, resulting in us finding a couple spots with obvious sediment losses to streams. There were several other areas we have instructed the contractor to fix ASAP, and we will be monitoring their progress. In the contractors defense, I think the holiday leave at New Year, coupled with the heavy rain and then immediate cover up of mud and visible issues with snow, hampered their/our ability to catch the issues within 24hrs. We had the contractor (Vannoy) met us immediately after finding these issues yesterday afternoon, and they have gone to work fixing the issues, as well as retrieving sediment. With more rain and snow expected tonight, we asked them to put all their effort into buttoning up any EC measures that had failed first and foremost, and then put their forces to getting out visible sediment from the two streams. I do not have the actual totals lost yet, but hope to have them soon. I expect it to be on the lower scale at the 17A site (maybe only a bucket or two), but I expect numerous buckets from the 15A site. I've attached a photo of each site from yesterday, and will follow up with photos once the corrective actions have taken place. I'll also get you the totals of sediment lost as soon as our staff receive them. Thanks and let me know if you need additional information, etc. Kevin Kevin Hining Division 11 Environmental Supervisor North Carolina Department of Transportation 828-386-7202 cell kihining ncdot.gov 801 Statesville Rd. PO Box 250 North Wilkesboro, NC 28659 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.