20161272 Ver 1_More Info Received_20170404

Strickland, Bev
From: Jim Spangler <[e-mail]>
Sent: Tuesday, April 04, 2017 2:19 PM
To: Higgins, Karen; Alexander, Tasha L CIV USARMY CESAW (US)
Cc: Ketchem, Brian ([e-mail])
Subject: RE: Brickyard (DWR# 16-1272, Wake County); Corps AID
Attachments: DRAFT ACOE_Impact Maps (02.06.17).pdf, Culvert Sequence Detail.pdf
Hello Karen,
Efforts have fallen flat to get wetland mitigation credits from any of the Providers, so I'll be submitting an ILF request to
DMS. I will be identifying that the 404/401 PCN is in review on the Request Form.
Once I get the confirmation, I'll forward that along to both of you for your records.
In the meantime, can you update me on your review of my response from last month, below (I've also re -attached the
maps I sent you then)?
I'm working on closing out the loose ends with Tasha, but have been delayed because the property owner has been
logging the site. Should have Corps review materials completed within the next week now that the site is safely
available again for data completion on qualitative wetland and stream assessment for mitigation purposes. On the issue
of the appropriate mitigation ratios, I need to get DWR to look at perennial/Intermittent nexus issue (even though all
our data suggest everything is intermittent until you get to the stream that runs under 540)—can you facilitate that or
have that person contact me? RRO seems to be understaffed as I can't get a call back...
Thanks,
Jim
SPANGLER
ENVIRONMENTAL, INC.
James A. (Jim) Spangler, CEI, A.M. ASCE
President
www.SpanglerEnvironmental.com
919-875-4288 0
919-875-4287 F
4338 Bland Road, Raleigh, NC 27609
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From: Jim Spangler
Sent: Tuesday, March 14, 2017 4:41 PM

To: '[e-mail]' <[e-mail]>; 'Alexander, Tasha L CIV USARMY CESAW (US)'
<[e-mail]>
Cc:'Ketchem, Brian (Brian.Ketchem@ meritagehomes.com)' <Brian.Ketchem@ meritagehomes.com>
Subject: FW: Brickyard (DWR# 16-1272, Wake County); Corps AID
Importance: High
Karen,
In response to your Request for Additional Information letter dated February 16, 2017:
1. You are correct that the Supplemental Sheet has a typo on it. The correct wetland impact is shown in Table C.2
of the PCN form.
2. Permanent Loss of Use of 251 Lf. is correct as shown in the Section 3.0 Stream Impact Table supplement, as
presented in the PCN documentation. For clarity, the impact locations are broken down as follows, using the
nomenclature [form # (plan table #)]:
a. Location [S1 (1A)]: 118 Lf. of which 36 feet shall be embedded rip rap energy dissipation as a scour hole
with NO PERMANENT LOSS OF USE [S1 (113 and 1C)] = 82 Lf. PERMANENT LOSS OF USE
b. Location [S2 (3A)]: 86 Lf., of which 21 feet shall be embedded rip rap energy dissipation as a scour hole
with NO PERMANENT LOSS OF USE [S2 (313)] = 65 Lf. PERMANENT LOSS OF USE
c. Location [S3 (4A)]: 140 Lf. of which 36 feet shall be embedded rip rap energy dissipation as a scour hole
with NO PERMANENT LOSS OF USE [S3 (413 and 4C)] = 104 Lf PERMANENT LOSS OF USE
3. No determination of the perennial/intermittent point has been made by DWR. Because our application
proposes to provide mitigation for Corps' permitting purposes of at least 1:1 for all 251 Lf. of impact to streams,
a determination of what of that 251 Lf. amount is intermittent has not been made. As you know, the Corps has
identified that 2:1 mitigation may be necessary for stream impacts unless data can be provided thatjustifies
only 1:1. We are in the process of determining relative condition of the streams in the various impact locations
for appropriate mitigation ratio purposes.
4. Condition #13 of GC3890: See below and the attachments.
5. Condition #6 of GC3890: See below and the attachments.
6. The Town of Cary is reviewing all aspects of this development including applicable Jordan Lake Riparian Buffer
Impacts.
Please feel free to contact me should you require additional information. Please let me know when we may expect to
receive the 401 Water Quality Certification for this project.
Regards,
Jim
SPANGLER
ENVIRONMENTAL, INC.
James A. (Jim) Spangler, CEI, A.M. ASCE
President
www.SpanglerEnvironmental.com
919-875-4288 0
919-875-4287 F
4338 Bland Road, Raleigh, NC 27609

This e-mail is intended only for the identified recipient(s). It (and any attachments) is strictly confidential and may contain
attorney -privileged work product. If you have obtained this e-mail by error or you are not the identified recipient(s), please notify
the sender by calling toll free 1-866-772-6453, then delete this e-mail (and any attachments) from your system. Use of this e-mail
(or any attachments) by any person(s) other than the identified recipient(s) is strictly prohibited.
From: Hart, Brad[mai Ito: [e-mail]]
Sent: Tuesday, March 14, 2017 2:25 PM
To: Jim Spangler<jspangler@spanglerenvironmentaLcom>
Cc: Cal Rieder <[e-mail]>; Ketchem, Brian (Brian.Ketchem@ meritagehomes.com)
<Brian.Ketchem@ meritagehomes.com>; Beasley, Troy <[e-mail]>; Snoberger, Michael
<[e-mail]>; Beasley, Troy <[e-mail]>
Subject: RE: Brickyard
Jim,
Please see our suggested responses below. Also provided for reference is a copy of the impact maps and the culvert
installation sequence detail.
1. Note that twin culvert on Impact Map 1-2 (for Impact #1) illustrates one larger culvert alongside a smaller
"perched" culvert in order to mimic the natural channel. The base flow of the stream will be captured in the
larger culvert, which will maintain normal water depth and allow for aquatic life passage. The smaller "perched"
culvert will only receive flow during periods of extremely high flow/flooding. Also please refer to the attached
Culvert Sequence detail and outline that are also contained within the site construction drawings. Note that the
impact maps include provisions for embedded dissipaters for stabilization of the disturbed portion of stream
channel at both the downstream and upstream ends of the culvert. The rip -rap will be installed such that the
top of the rip -rap matches the pre -construction contours of the stream bed, which will maintain aquatic life
passage and allow the dissipator to continue functioning as a stream.
2. The sewer crossing at Stream Impact #8 will cross an intermittent stream in the very upper reach, just below the
stream origin. The flow in the upper reach of the intermittent stream is very brief and low in
volume. Construction of the sewer crossing will occur during predicted period of dry weather so that work can
be conducted and completed "in the dry'.
Thanks
Brad
Brad Hart, PE, LEED AP
ft
10MO-0 WithersRavenet
ova Ptopte, v r $w4ess.
115 MacKenan Drive I Cary, NC 27511
Office: 919.469.3340 I Direct: 919.535.5164
Mobile: [phone]
[e-mail]
in f
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