HomeMy WebLinkAbout20150342 Ver 2_More Info Requested_20170129
Strickland, Bev
From:Homewood, Sue
Sent:Sunday, January 29, 2017 9:29 AM
To:'Walter Cole'; Steve Causey (scausey@allied-engsurv.com)
Cc:'Gibby, Jean B SAW'
Subject:Smith Crossing
Hi Walter and Steve,
I have a couple questions and need a couple items before issuing this 401.
- On page 4 of the PCN, question 6b. states that there will be a Phase 2. Could you provide a map that shows
which portion of this property is within Phase 1 and which areas are considered part of Phase 2.
-The 401 WQC 3890 requires that the impacts are installed “in the dry”. ”. Therefore, dewatering methods will
be necessary to temporarily dewater the stream channel during pipe installation. Please provide a construction
sequence that details the method of dewatering to be utilized at the site and the sequence of construction
events to be followed to ensure compliance with this condition. In addition, please ensure that the location of
the temporary impacts are shown on the construction drawings and clearly indicated in the revised impact
table.
-It appears that the alignment of the culvert inlet is not in-line with the channel. We have found this to be
problematic in long term management. Please realign the inlet location of the culvert for the road crossing so
that it is in better alignment with the stream channel. Please update the impact drawings and impact table
accordingly.
-Has the town issued approval of the Stormwater Management Plan? If so, please submit a copy so I do not have
to condition the 401 requiring it at a later date.
-Can you verify what the additional pipe outlet shown within the headwall is for please. It appears to be
connected to a stormwater inlet system.
nd
Just an FYI, when we conducted our site visit we spent a good deal talking about the possibility of a 2 road crossing
(and the plans clearly indicate the potential for a second crossing) and mitigation. If/when a permit is submitted for
Phase 2 it will may put the project over the threshold for mitigation and at that time the existing impacts will count
towards the mitigation calculation. At this time the Division does not require mitigation for intermittent streams but we
have in the past and we may again in the future. There could be a scenario where at the time the Permittee comes in
for Phase 2 they will be required to mitigate for both Phase 1 and Phase 2, where-as if they apply for Phase 2 now the
DWR would only require mitigation for perennial stream impacts greater than 150 feet. I can’t remember if we talked
about that scenario.
Thanks,
Sue Homewood
Division of Water Resources, Winston Salem Regional Office
Department of Environmental Quality
336 776 9693 office
336 813 1863 mobile
Sue.Homewood@ncdenr.gov
450 W. Hanes Mill Rd, Suite 300
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Winston Salem NC 27105
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