20061617 Ver 2_Staff Comments_20080418

Wendell Falls/64 Intersection checkup; upcoming mod.
From: Rob Ridings [[e-mail]]
Date: Apr 18, 2008 12:32
"Ian McMillan"<[e-mail]>, "Cyndi
To: Karoly"<[e-mail]>, "Brian Wrenn"<[e-mail]>
"Niki Maher'<[e-mail]>, "Chris
Cc: M urray"<cmurray@dot. state. nc. us>
Subject: Wendell Falls/64 Intersection checkup; upcoming mod.
All,
Today I met up with Murry Phillips and Dean Hatfield of Louis Berger
Group to look at sites at the Wendell Falls project where the new tie-in
to US 64 is with. This meeting was due to DOT having comments to some
of the sites and it was agreed that I would review these sites for
compliance and inspection.
One issue Division 5 had with several sites was whether the orange
fencing and sediment & erosion controls were in the precise spot that
they were permitted for. -Dean says they will have surveyors come out
ASAP to document this and get a clearer idea that they are in the right
place. They will send the results to both us and DOT.- This will also
be done to belay any concerns about encroachment to DOT's mitigation
sites for US 64.
Other issues:
Site 1 (Bridge over Marks Creek): A temporary workbridge was installed
that had not been permitted. I told them that I appreciated they
bringing this to my attention straight-forward. _I told them to
immediately submit a minor permit modification to the 401 Unit to
account for any temporary impacts due to the bridge, and that a possible
certification condition may include a required site visit at project
completion to prove that the impacts are temporary._
For the rest of the site, everything looked relatively fine. A sediment
basin was moved further from the nearby wetlands than what is on the
drawings, but that's obviously a good thing.
Site 4: DOT expressed concern about two cross vanes being removed from
a permitted stream impact from their US 64 project. One of them was
where the new fill slope is for the new ramp, so it cannot be replaced.
Dean and Murray said however they will replace the second one (near the
pipe inlet) to help slow water to prevent problems later on. Also, they
will remove some riprap stone that was placed in the thalweg near the
pipe inlet to keep flow going smoothly.
_On the other side of the ramp, they will submit a permit mod (on same
one as temp bridge discussed above) to stabilize the inlet of a pipe to
prevent headcutting. _ DOT expressed concern that pipe was buried a bit
too much, so the stabilization will be done to try to keep any expected
headcutting to a minimum.
Site 5 & 6: These looked overall good to me. Additional seeding will
be done to help stabilize slopes even further. Again, re-surveying will
be done to confirm appropriate location for fencing.
There are other permit sites obviously, but these were the ones DOT had
expressed concern about. They were also the main ones dealing with
DOT's right-of-way, so I concentrated my time there.
If any questions, let me know.
-Rob
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