20130777_Email_20141125

Wanucha, Dave
From: Slaughter, ]ohnathanH
Sent: Tuesday, November Z5,ZUl4l:3lPK4
To: VVanucha'Dave
Cc: Souther, Zachary S; Johnston, Gregory VV
Subject: RE: R'3lUl sediment loss follow-up Site 4l
There are about 5 or 6 other sites that have been approved. They are opened up as they are needed. Usually you try to
have a pit fairly close to the grading operations, particularly if you are using the off road dump trucks. You wouldn't
want to drive the truck 6 miles just to dump one load. Fuel costs would kill the contractor not to mention the time.
Zack — How about taking a look at the other pit plans and verify that a 25-year design was used for the basin
sizing. Recommend revised basin dimensions ifneeded.
From: VVanucha,Dave
Sent: Tuesday, November 25,2O1412:OOPM
To: Souther, Zachary S; S|aughter,]ohnathan H
Cm:Trivette, Nei|;[e-mail]|
Subject: RE: R-3101 sediment loss follow-up Site 41
OK, thanks for the explanation and meeting with me to discuss the matter in more depth. Division 11 has a number of
streams and tributaries located in HQW Zones or sensitive watersheds that need to be protected from sediment
pollution. I think for this point forward we are all on the same page regarding erosion control and design standards and
other conditions per NCDOT's NPDES Construction Stormwater Permit, 401 Certification and Nationwide 404 permits. If
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From: Souther, Zachary
Sent: Tuesday, November 25,2O148:]7AM
To: VVanucha, Dave; S|aughter,]ohnathan H
Cc: Trivette,Neil
Subject: RE: R-3101 sediment loss follow-up Site 41

Dave,
I did not account for trout water tributaries to require the 25 -year storm design and accepted the 10 -year design that
was provided by the contractor's environmental consultant. I have since gotten clarification that unnamed tributaries
carry the same classification as the stream they flow into. We spoke about this at our meeting a few weeks back. This
site should have been designed for a 25 -year storm. The basin currently has a greater volume capacity than the 25 -year
design would require but the surface area does not meet a 25 -year design. However, the failure of the basin occurred at
the inlet slope drain pipes which limited water flowing into the basin. This caused water to back up and the berm
failure. Our investigation indicated this is what lead to the off -site sedimentation.
The basin inlet has been opened up and will have no restrictions on water getting into the basin. A 25 -Year design would
have been a larger basin with greater surface area and volume but the failure likely would have occurred on the larger
design due to the limited inlet capacity. The site is no longer active and the haul road has been seeded and covered. The
site has been prepped but was not able to be seeded and covered due to the rain. The site should be covered by middle
of next week. Hope this helps answer your question. Thanks,
Zack Souther E.I.
NCDOT REU — Field Ops
Phone Number: 336- 466 -7559
From: Wanucha, Dave
Sent: Monday, November 24, 2014 2:44 PM
To: Slaughter, Johnathan H
Cc: Souther, Zachary S
Subject: RE: R -3101 sediment loss follow -up Site 41
Heath,
One issue needs to be addressed relative to the sediment loss for this Site 41.

E-mail correspondence to and from this address may be subject
to the North Carolina Public Records Law and may be disclosed to third partij
From: Slaughter, Johnathan H
Sent: Wednesday, October 29, 2014 9:54 AM
To: Wanucha, Dave
Subject: RE: R -3101 sediment loss follow -up Site 41
From: Wanucha, Dave
Sent: Wednesday, October 29, 2014 9:36 AM
To: Slaughter, Johnathan H
Cc: Souther, Zachary S; Johnston, Gregory W
Subject: R -3101 sediment loss follow -up Site 41
Heath,
Thanks for taking the time to review the project and explain some of the issues you all have encountered. As I
understand it from our site visits on October 27, there were a few tasks we discussed that need to be completed relative
to the sediment loss that occurred following the 5.9 inch storm event over a 4 -day period (Oct 13 —16).
• The debris and sediment that remain in the riparian area along the fence line near the culvert under US 21 need
to be removed, the trib redirected to its original channel and organic core fiber matting laid;
• At the waste site, remove captured sediment from northern basin and repair /reconstruct as needed;
• At the waste site, repair /reconstruct the southern basin as needed; and,
• Several slope drains along US 21 need to be repositioned to discharge at the same elevation as the wattle energy
dissipaters.
The NDPES records reviewed on site were compliant and all other areas we reviewed looked to be in order. When you
get the chance, please rescan the waste site plans and send electronically. The plans you sent previously were cut -off to
8 % x 11 rendering the plan sheets unreadable for the most part.
Let me know if the above listed tasks were not as discussed.
Dave W
Please be advised: Beginning October 23, 2014, the Winston Salem Regional Office (WSRO) of the NC Department of Environment
and Natural Resources (NCDENR) will begin moving to a new location. Starting October 22, 2014 at 5:00 pm, our new main
telephone number will change to 336 -776 -9800. If you contact staff" at their prvious telephone number, you will be directed to their
new direct telephone number. All regional office services, including file review, will continue and all appointments need to be
prescheduled with WSRO staff' during this transition. If you have any questions or concerns, please contact the main number provided
above during our normal hours of operation, 8:00 aim to 5:00 pm.
f'f'ective October 22, 20 Id at 5::00 pin, aia� ollice teVelnhone number will change to 335 "776 97031
Dave Wanucha
NC DENR Winston Salem Region Office
NC Division of Water Resources
Transportation Permitting Unit
Winston - Salem, NC
Cell (336) 403 -5655
01'fice )336) '776 9703

E-mail correspondence to and from this address may besubject
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