20100063 Ver 1_More Info Received_20130516 (2)

Strickland, Bev
From: Lucas, Annette
Sent: Thursday, May 16, 2013 1:33 PM
To: Strickland, Bev
Subject: FW: Franklin County HUB -Level Spreader Issue
Attachments: TNF - Level Spreader 10 Alternative_S &N 2013- 05- 16.pdf; HUA - TNF Construction Plans
2011- 06- 15_Sheet X2.pdf; HUA - TNF Construction Plans 2011- 06- 15_Sheet X3.pdf; HUA -
TNF Construction Plans 2011-06-15—Sheet X4.pdf; HUA - TNF Construction Plans
2011-06-15—Sheet X5.pdf; HUA - TNF Construction Plans 2011-06-15—Sheet DF- 03.pdf
Fi RE =113-1 l I1-
From: Stephanie Norris [ mailto :stephanie @spauldingnorris.com]
Sent: Thursday, May 16, 2013 12:07 PM
To: Lucas, Annette; 'Debbie Edwards'
Cc: 'Scott Hammerbacher'
Subject: RE: Franklin County HUB -Level Spreader Issue
My resources to prove the current conditions and create an alternative solution to Level Spreader 10 are limited. In
addition, I do not want to assume responsibility for the Hobbs Upchurch design for liability reasons. My contract with
Franklin County is limited to contract management and construction inspection and testing, which does not include
engineering design. This said, I am attempting to provide as much data as possible with field verification to reach a
resolution to the issue at hand. I hope that you find the information I am providing sufficiently meets your
expectations. I am also happy to meet you on -site, if that will help.
Since I do not have access to survey data for the road or the adjacent lot that reflects the current site conditions, I have
sketched the existing conditions on a PDF of the area prepared by Franklin County using the Hobbs Upchurch
construction drawings, 2013 aerial imagery, and my site inspection of the area. The attached PDF illustrates direction of
flow for both the roadway ditches and roadway cross - sections (arrows in red). Cross - Section Sheets X -2 through X -5
(attached) confirm the road is designed to be in super - elevation to the left side from Culvert 1 to approximately Culvert
2, which is how the site is graded.
Although the topo in the attached PDF illustrates that the drainage area to the right side roadway ditch includes a
substantial area of the field between the USGD building and the roadway project, the May 14, 2013, photos (provided
previously) illustrates this may not be the case. It is my opinion that the topo in the PDF reflects existing conditions prior
to the construction of the USGD building. The field was likely graded during the building and parking area construction
and now sheet flows more toward the stream buffer than to the roadway project. However to be conservative (and
without the benefit of field survey), I assumed that approximately 2 acres drains to the right side roadway ditch at
Culvert 2. Since the road is in super - elevation away from the right side roadway ditch, the majority of the flow through
the ditch is from grassed or natural areas, not impervious areas.
#f the permit and can be eliminated. Once we have your feedback on • • n, I will work with Debbie •
provide additional information be needed for the permit modification. you • your • •- •
,#if this information. - know if you

Stephanie Iv. Norris, PfW
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From: Lucas, Annette [ mailto :annette.lucas @ncdenr.gov]
Sent: Wednesday, May 15, 2013 1:52 PM
To: Stephanie Norris; 'Debbie Edwards'
Cc: 'Scott Hammerbacher'
Subject: RE: Franklin County HUB -Level Spreader Issue
Stephanie — whatever is changing as a result of your latest field reconnaissance would be ideal.
Annette
From: Stephanie Norris [mailto:stephanie spauldinanorris.com]
Sent: Wednesday, May 15, 2013 11:01 AM
To: Lucas, Annette; 'Debbie Edwards'
Cc: 'Scott Hammerbacher'
Subject: RE: Franklin County HUB -Level Spreader Issue
Thanks for the speedy response. Just so I am clear... Do you mean updated topo and map of the drainage area for the
right side roadway ditch only?
Stephanie Iv. Norris, P, ---
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From: Lucas, Annette [ mailto :annette.lucas @ncdenr.gov]
Sent: Wednesday, May 15, 2013 10:54 AM
To: Stephanie Norris; 'Debbie Edwards'
Cc: Scott Hammerbacher
Subject: RE: Franklin County HUB -Level Spreader Issue
Stephanie —
What you are proposing sounds reasonable to me. But in order to approve I will need to have some updated plan sheets
showing the actual topo. Would that be possible?

From: Stephanie Norris
Sent: Tuesday, May 14, 2013 6:07PM
To: 'Debbie Edwards'; Lucas, Annette
Cm: ScottHammerbacher
Subject: RE: Franklin County HUB-Level Spreader Issue
Good evening. I met on-site this morning with the Contractor (Fred Smith Company) and Scott Hammerbacher(Frank|in
County) to evaluate the roadway ditch and slope from Station 16+50 to 24+00 (right side), which leads to the upstream
end of Culvert 2. Attached for your reference is Sheet DF-03 from the TNF Construction Drawings that illustrates a
portion of the subject roadway ditch, Level Spreader 1O, and Culvert 2. After reviewing the site conditions and
construction drawings today, there are a few things | wanted to communicate to you while itisstill fresh on my mind.
1. The roadway is in super-elevation toward the left side from Sta 16+50 to 23+50. All the runoff from the
roadway is draining into the left side roadway ditch and ultimately to Level Spreader 2/3. As a result, the only
flow from impervious area (the roadway) that enters the right side roadway ditch is from Sta 23+50 to Sta 24+70
at Culvert 2 (approximately 120 LF).
2. The runoff from the impervious around the existing building and parking area does not drain into the subject
roadway ditch. Attached are photos of the area between the existing building and our top of slope. |n fact, the
majority of the runoff from the field between the building and our top of slope sheet flows toward the stream at
Culvert 2. Therefore, the subject ditch is not receiving a large amount of off-site runoff. (REF. Photos 233 to 236)
3. Based on the conditions described in Items 1 and 2, the majority of the runoff being conveyed by the subject
roadway ditch is from the grass shoulder to the top of slope (700 LF x 40 LF = 28,000 SF = 0.65 AC; Q = CIA = 0.3 x
7.22 IN/HR xO.65A[= 1.41 [FS roughly).
4. The roadway ditch as graded has a trapezoidal shape with approximately a 2 LF bottom width, as opposed to a
V-ditch illustrated in the typical sections. The slope from the shoulder point tothe ditch is graded to a 5:1. The
slope from the ditch to the top of slope is graded to 2.5:1 to 3:1, as opposed to the 2:1 slope illustrated in the
typical sections. (REF. Photos 229to231)
5. The existing power poles along the top of slope, as shown in the photos, would prohibit the slope from being
regraded to achieve a3:1 (or flatter) slope. Not to mention, the slope itself isrock. This is the cut area where an
extensive amount of blasting occurred for the road construction. Flattening the slope through this area would
So the question is ... Since the amount of runoff through the subject ditch line is potentially less than the design and very
little of the runoff comes from impervious area (existing or proposed), is Level Spreader 10 and nutrient removal
warranted in this case? If you want to schedule a site visit or conference call to discuss this further, just let me know.
Stephanie L Norris, PE
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From: Stephanie Norris [ mailto :stephanie @spauldingnorris.com]
Sent: Monday, May 06, 2013 2:29 PM
To: 'Debbie Edwards'; 'Lucas, Annette'
Subject: RE: Franklin County HUB -Level Spreader Issue
Perfect. I assume we are meeting at Annette's.
Stephanie Iv. Norris, P, ---
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From: Debbie Edwards [mailto:dedwards @sandec.com
Sent: Monday, May 06, 2013 2:09 PM
To: Lucas, Annette; Stephanie Norris
Subject: RE: Franklin County HUB -Level Spreader Issue
Day and time works for me.
Thanks,
Debbie
DEBORAH EDWARDS
Soil & Environmental Consultants, PA
919-846-59oo (office)
919-673-8793 (mobile)
THINK BEFORE YOU PRINT
From: Lucas, Annette [ mailto :annette.lucasCa)ncdenr.aov]
Sent: Monday, May 06, 2013 2:07 PM
To: Stephanie Norris; Debbie Edwards
Subject: RE: Franklin County HUB -Level Spreader Issue
Stephanie — How about if we say 1:30 because I have to head out at 2:45 and just want to make sure we have enough
time.
A
From: Stephanie Norris [mailto:stephanie spauldinanorris.com]
Sent: Monday, May 06, 2013 2:02 PM
To: Lucas, Annette; 'Debbie Edwards'
Subject: RE: Franklin County HUB -Level Spreader Issue
,:
• - .• , a • ID
Stephanie Iv. Norris, P, ---

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From: Lucas, Annette [ mailto :annette.lucas @ncdenr.gov]
Sent: Monday, May 06, 2013 1:32 PM
To: Debbie Edwards
Cc: Stephanie Norris (stephanie @spauldingnorris.com)
Subject: RE: Franklin County HUB -Level Spreader Issue
Next week— Monday, Wed and Thurs are all good for me. Why don't you pick something and we'll put it on the
calendar.
From: Debbie Edwards [mailto:dedwardsCa)sandec.com]
Sent: Monday, May 06, 2013 1:28 PM
To: Lucas, Annette
Cc: Stephanie Norris (stephanie spauldinanorris.com)
Subject: Franklin County HUB -Level Spreader Issue
Annette,
I spoke with Stephanie, unfortunately she has a scheduled meeting in Charlotte that day and will be gone from
7AM -5PM that day. That said, Thursday will not work for us.
Next week anytime we can both be available. Or if anything opens up for you this Friday, the loth we could be
..,
Please provide a date and time and we will make it work.
Thanks for working with us on this issue!
Debbie
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THINK BEFORE YOU PRINT

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