HomeMy WebLinkAbout20190910 Ver 1_More Info Received_20190911Peter Galan
From: Goss, Stephanie <stephanie.goss@ncdenr.gov>
Sent: Thursday, October 12, 2017 3:14 PM
To: Peter Galan
Subject: FW: [External] Johnston County Sewer System Improvements
Peter,
Per our conversation today, your project Swift Creek Interceptor and Pump Station in Johnston County does not require
written approval. The project is a perpendicular utility line crossing a stream (at an angle 75 degrees and 105 degrees)
that disturbs equal to or less than 40 linear feet of riparian buffer with a maintenance corridor equal to or less than 10
feet in width is considered exempt and does not require written approval. Also, your project meets the threshold with
the Nationwide permit 12 which the project does not have any permanent fill into or modification of wetlands and/or
waters. Last, no total temporary impacts to streams greater than 500 feet. See the link below to view NWP 12.
http://edocs.deg.nc.gov/WaterResources/DocView.aspx?dbid=0&id=493428&page=1&cr=1
Stephanie Z. Goss
Environmental Senior Specialist
Division of Water Resources
Raleigh Regional Office
3800 Barrett Drive
Raleigh, NC 276o9
919-791-4256
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties
From: Peter Galan[mailto:pgalan@thewootencompany.com]
Sent: Monday, October 09, 2017 8:49 AM
To: Burdette, Jennifer a <Jennifer.Burdette@ncdenr.gov>
Cc: Lee Campbell<Icampbell@thewootencompany.com>
Subject: [External] Johnston County Sewer System Improvements
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you verify that the
attachment and content are safe. Send all suspicious email as an attachment to.report.spam@nc.gov.
Good morning Jennifer,
Back in June we submitted a PCN to the USACE and to your office for a sewer extension/pump station decommissioning
project in Johnston County. We received comments from USACE regarding impact to the wetlands and modified the
plans as a result. The changes consisted of changing two crossings of Swift Creek from open cut to bore -and -jack — these
crossings are on Sheets C-1.04 and C-1.05. We have since resubmitted the PCN with revised plans to USACE and have
received final approval from them. The link below can be used to access the revised PCN for your review.
https://wootencompanV.sharefile.com/d-sfa23a5d769448b9b
Should we expect to receive anything indicating official approval from your office, or will this just be for your review
since USACE has already approved the plans?
Please let me know if you have any questions!
Thanks,
Peter Galan, EI
Assistant to Project Engineer
The Wooten Company
120 North Boylan Avenue
Raleigh, NC 27603 IM
p.919.828.0531
f.919.834.3589
www.thewootencompany.com
NCDbVQ Buffer determination completed 1:17/2017
Sb. If the Corps made a jurisdictional determination, what type of determination was made?
r Preliminary r Approved r Not Verified r Unknown (-- WA
Corps AID Number:
Example SAW 2017-9%99
5c. If 5a is yes, who delineated the jurisdictional areas?
Name (if known): Rick Trone
Agency/Consultant Company: NCDWR Raleigh Regional Office
Other:
Shc. Jurisdictional determination upload
6dcthe u*ad butlm or dag and drop files hP a to attach docrrra t
D WR_RRO1 G_A04.PDF
Fie type mist be FIF
6. Future Project Plans
5 02MB
6a. Is this a phased project?
r Yes r: No
Are any other NWP(s), regional general permit(s), or individual permits(s) used, or intended to be used, to authorize any part of the proposed project or related activity? This
includes other separate and distant crossing for linear projects that require Department of the Army authorization but don't require pre construction notification.
None.
D. Proposed Impacts Inventory
1. Impacts Summary
1 a. Where are the impacts associated with your project? (check all that apply):
W Wetlands A Streams -tributaries r Buffers
r Open Waters r Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
"W." will be used in the table below to represent the word "wetland".
12a Site #'
Reason* f') .ib.
Ipact type m ` P)
2c- Type of W.*
2d. W. name *
".ted*
12f. Type of !
2g. Impact
J—
lie.
Jurisdicition*i'i !area*
lh4a - Ct 04 re,lrJling for Utilities
NO -Tidal Freshwater Marsh
rresh:tate.• Ith','���Iroles
4.145
I
Shrul,�Grass Wetlands IL
W4a - C1 03 Vehicle Access Ford
T
Head.ler Forest
Wooded Welland I
Yes
Corps !
0.014
(ayes) I
2g. Total Temporary Wetland Impact
0.159
2g. Total Permanent Wetland Impact
0.000
2g. Total Wetland Impact
0.159
2h. Comments:
Please note the impact summary represents new impacts. Quantities of impact previously permitted are shown on the impact maps, but are not shown
here. W4a represents the temporarily -impacted area. The W4a wetlands will be allowed to revegetate to their original conditions upon project
completion.
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this question for all stream sites impacted.
"S." will be used in the table below to represent the word "stream".
gy
Stream Foid
JTemporary
Other
Swift Creek -East ChannelPerennial
Corps
19
21
Average(feet) .,
lirsr fee)
53
I Installation .
Temporary
Other
SwiftCreek-West Channel
Perennial
dJLflifit,
Avaage (leaf)
Ifnea Feet)
:/ '" All Perennial or Intermittent streams must be verified by DWR or delegated local government.
3i. Total jurisdictional ditch impact in square feet:
3i. Total permanent stream impacts:
3i. Total temporary stream impacts:
BO
3i. Total stream and ditch impacts:
BO
3j. Comments:
No permanent impacts are proposed to either impacted stream. Contractors will temporarily disturb the streams to install the gravity sewer and
construction access across the East Channel. There will be a permanent low Flow ford crossing installed in the side (east) channel of Swift Creek. The
ford will be constructed to cross below the bottom of the channel and topped with e>usting channel material to epsting bottom grade. The streams will
be restored to their original contours and conditions upon project completion.
E. Impact Justification and Mitigation
1. Avoidance and Minimization
Ia. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project:*
The installation is proposed to cross the impacted streams and wetlands by angles as close to perpendicular as possible (between 75 and 105
degrees). This proposed alignment contains a realignment of the original design. The new alignment avoids some wetland areas originally disturbed
by the proposed installation
tb. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques:*
Proper erosion control techniques will be used throughout the construction process, including the use of silt fence, silt fence outlets, properly
designed and installed construction entrances, tree protection fencing, and rock check dams, Contractors will stay within the limits of disturbance, as
defined by the proposed permanent andlor temporary easement Temporary Coffer Dams will be used to temporarily allowthe stream now to by-pass
the work area within the adjacent channel. The stream channel will be restored to the original cross section.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for impacts to Waters of the U.S. or Waters of the State?
r Yes r: No
2b. If this project DOES NOT require Compensatory Mitigation, explain why:
Less than 0.16 acres of wetland will be temporarily disturbed, and the crossings proposed of Swift Creek and the Lfr to Swift Creek are both at angles between 75 and 105 degrees,
making them allowable installations. The work in the stream channel will also be temporary with the channel being restored to the natural elevations.
NC Stream Temperature Classification Maps can be found under the Mitigation Concepts tab on the Wilmington District's RIBfTS websile.
F. Stormwater Management and Diffuse Flow Plan (required by DWR)
— Recent changes to the stormwater rules have required updates to this section
1. Diffuse Flow Plan
Ia. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules?
Yes r No
1b. All buffer impacts and high ground impacts require diffuse flow or other form of stormwater treatment. If the project is subject to a state implemented riparian buffer protection
program, include a plan that fully documents how diffuse flow will be maintained.
All Stormwater Control Measures (SCM)s must be designed in accordance with the NC Stormwater Design Manual. Associated supplement forms and other documentation shall be
provided.
What type of SCM are you providing?
r Level Spreader
r Vegetated Conveyance (lower SHWT)
I— Wetland Swale (higher SHWT)
r Other SCM that removes minimum 30% nitrogen
W Proposed project will not create concentrated stormwater flowthrough the buffer
(check all that apply)
For a list of options to meet the diffuse flow req uiremen is. click here.
Diffuse Flow Documentation
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