20170998 Ver 1_More Info Received_20170928

Homewood, Sue
From: Justin Church <[e-mail]>
Sent: Thursday, September 28, 2017 2:33 PM
To: Homewood, Sue
Cc: Derek Goddard
Subject: Re: Eric Green Project
Let me see if I can clarify. The bankfull width is 13.5 ft as indicated in the table. I think the 14 you are referencing is
the 14 square feet of bankfull area. All of our ratios are normalized on the 13.5 ft width. If you notice on Rosgen's
relationship of pool spacing vs. slope, technically, we would be closer to 2.5 Wbkf with our 3.5% slope. I lean more
toward 2.75 - 3 Wbkf based on my engineering judgement for the area. If you take the range I gave you of 3 Wbkf +-
0.25 Wbkf, then you have a range of 37 to 43.88; 2.75 Wbkf would give a range of 33.75 to 40.51. The majority of our
pool spacing is close to 35 ft as you noted with several in the 45 ft range if you neglect the compound pools we are
trying to maintain in the existing bends. If you couple this with the ratios given in the design table, then I think we are
working well within acceptable ranges for the system. Again, we're working in ranges and trying maintain the existing
alignment where it works. One thing I'm trying to avoid is creating transverse riffles in some of the longer bends, so
we are showing more structure there. If we are able to harvest some longer logs, then we may be able to eliminate a
few of the compound pool structures in the field. On the material question, we will use logs and organic material
wherever possible. We normally show cross vanes as boulders but may do some log cross vanes depending on the
quantity and quality of our log harvest.
Please call me if we need to discuss further.
Thanks
/j c
On Wed, Sep 27, 2017 at 12:29 PM, Homewood, Sue <sue.homewood(cr�,ncdenr.gov> wrote:
Justin,
In reviewing your supplemental information I need more clarification. Your Design Considerations narrative indicates that there
will be a bankfull width of 14 ft and that pool to pool spacing was determined by 3W(bkf) +/- 25W(bkf). That should be 38.5 to
45.5. Your design table indicates that the bankful with is 13.5 and that the pool to pool spacing is a range of 27-54. This range
is much greater than the range you indicate in the text. I looked at your profile and the stations identified at the end of each pool
and the majority of the pool to pool spacing is 35' (this did not include the ones that are clearly closer together/stacked because
you indicated in the text that in select areas they are closer together). I'm concerned that text and table of documentation you
provided don't match and that the text does not support the design. Can you elaborate or address this further please. You also
note that the vanes will be constructed of logs rather than boulders however the plans and details provided indicate that all cross
vanes will be boulder vanes and J -hooks will be logs. If you are proposing something else, or a mix (to be determined by the
designer in the field) then the plans should reflect that please.
Also, I expect comments from NCWRC this week so there may be further follow-up emails.
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(cDncdenr.gov
450 W. Hanes Mill Rd. Suite 300
Winston Salem NC 27105
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Justin Church [mailto:justin e brec.biz]
Sent: Friday, September 15, 2017 12:47 PM
To: Homewood, Sue <sue.homewoodgncdenr.gov>
Subject: Eric Green Project
Sue,
Please see attached. I think I have answered the concerns we discussed, but please let me know if I can provide
something more.
Thanks
J