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HomeMy WebLinkAbout20130739 Ver 1_emails between DWR & Baker_20151021 Strickland, Bev From:Byers, Jake <JByers@mbakerintl.com> Sent:Wednesday, October 21, 2015 11:32 AM To:Merritt, Katie Cc:Huneycutt, Dwayne Subject:RE: St. Clair Creek Restoration/Baker Engi. (UNCLASSIFIED) Hi Katie, Thanks for the info. In regards to the noted issues: 1. We've discovered a hardware error with the ground water wells. Manual calibration has shown ground water levels significantly above the recorded levels from the wells. This is due to the small hole in the pressure transducer getting clogged with bentonite. They have since been adjusted. 2. The stream gauges are showing success (>30 days for 3 of 6 logger) and we expect this trend to continue and get better. We are only required to document 2 flow events in the 7 year monitoring period. 3. The ford crossing was requested by the landowner. Not sure why that has any bearing on anything since it's outside the CE and not being requested for credit. The impact length was accounted for in the 401/404 permit. The double culverts along UT3 are way more than adequate to handle flow from this drainage without coming close to overtopping the road. The 2 36" culverts can more than convey the 100 year discharge. An overlflow was unnecessary here since the pipes can convey such a large flow and will only overtop the road during extreme storm events. 4. Vegetation species are substituted during construction on almost all projects based on availability, cost etc. All planted species are native, appropriately wetland tolerant, and diverse. Thanks for looking into this stuff. Let me know if you have any questions and if you'd like to make a site visit at any point. Thanks, -Jake Jacob "Jake" Byers, PE | NC Ecosystem Services Manager | Michael Baker Engineering, Inc., a unit of Michael Baker International 797 Haywood Road, Suite 201 | Asheville, North Carolina 28806 | \[O\] 828-350-1408 EXT 2001 | \[M\] 919-259-4814 jbyers@mbakerintl.com | www.mbakerintl.com 1 -----Original Message----- From: Merritt, Katie \[mailto:katie.merritt@ncdenr.gov\] Sent: Wednesday, October 21, 2015 10:49 AM To: Byers, Jake Subject: FW: St. Clair Creek Restoration/Baker Engi. (UNCLASSIFIED) Hey Jake, I had forgotten that I had contacted the USACE about this project right after you and I talked on the 5th. The email below from Andrea indicates some issues noted by the USACE on the Monitoring plan. I'm still reading through the mitigation plan you gave me, but I also found the DWR project #, which allows me access to all of the documentation that DWR has received for this project by the IRT since 2013. Thus, now that I have access to more information, I should be able to figure out the answers to your questions. A site visit is going to be necessary prior to a final decision by the DWR. For your records, the DWR project# is 2013-0739. Thanks Katie Katie Merritt Nutrient Offset & Buffer Banking Coordinator 401 & Buffer Permitting Unit North Carolina Department of Environmental Quality Work: 919-807-6371 Website: http://portal.ncdenr.org/web/wq/401bufferpermitting 512 N. Salisbury Street, Raleigh, NC 27620 1617 Mail Service Center, Raleigh, NC 27699-1617 Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed to third parties. -----Original Message----- From: Hughes, Andrea W SAW \[mailto:Andrea.W.Hughes@usace.army.mil\] Sent: Tuesday, October 06, 2015 10:08 AM To: Merritt, Katie <katie.merritt@ncdenr.gov>; Tugwell, Todd SAW <Todd.Tugwell@usace.army.mil> Cc: Scarbraugh, Anthony <anthony.scarbraugh@ncdenr.gov> Subject: RE: St. Clair Creek Restoration/Baker Engi. (UNCLASSIFIED) Classification: UNCLASSIFIED Caveats: NONE These are the issues we noted from review of the monitoring plan. 1. Groundwater wells not meeting performance standards but were installed late in the growing season. 2. Stream gauges on the site range from 4.6 days to 71 days. (Not meeting the 30 day continuous flow standard) 2 3. A ford crossing was installed just outside easement boundaries - not noted in mit plan. No emergency overflow (culvert) was constructed along UT 3 as proposed. 4. Vegetation (species) not consistent with mitigation plan. They substituted species 3