20150603 Ver 1_More Info Received_20150807

ZINK ENVIRONMENTAL, PLLC
129 NoRWOOD AVE, ASHEVILLE, Nc 28804
828-273-8322
August 5, 2015
G. Landon Davidson, PG
Regional Supervisor
Water Quality Regional Operations
Division of Water Resources - Asheville Regional Office
2090 US Hwy 70
Swannanoa, NC 28778
Re: DWR# 15 -0603, Mitchell County
Dear Mr. Davidson:
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Please find responses below and materials attached for the Request for Additional Information for
the 401 Water Quality Certification application for the Grassy Creek Stream Enhancement in
Spruce Pine, Mitchell County, NC (DWR# 15- 0603).
The Agent Authorization Forms for Roger and Mary Pittman and the Baker Family
Partnership properties are unsigned. Provide signed copies of these forms.
Forms were previously signed incorrectly; updated forms are attached.
2. Section C.3. of the Pre - Construction Notification (PCN) form lists stream impacts S1, S2,
S3, and S5 as temporary. The placement of in- stream structures, the relocation of stream
channel, and the modification of stream dimension are considered permanent impacts.
Please re- submit this section of the PCN to reflect permanent impacts.
Attached is a revised version of page 4 (containing Section C.3) to show all stream impacts
as permanent.
3. The PCN proposes to culvert 34.5 feet of Stream 4. Provide additional details describing
why this impact is necessary to achieve your goals.
A rock -lined swa /e, conveying stormwater from approximately 0.8 acres of impervious
surface, currently exists to the west of the existing Stream 4. This swale discharges into
Stream 4, which flows into Grassy Creek. By placing 34.5 feet of Stream 4 in a culvert, the
stormwater drainage can be routed over the culvert, and into a constructed stormwater
wetland to be constructed between Stream 4 and Grassy Creek. Without a culvert, it would
not be possible to route this stormwater into the available treatment area.
Page 1 of 2

4. It is not clear what you propose with regard to stabilization of Stream 3. Provide details
regarding proposed impact S5.
At impact S5, Stream 3 is tied into the new location Grassy Creek. Stream 3 has not been
relocated in this reach but the streambanks and immediate floodplain have been disturbed
due to work on Grassy Creek. This area will be stabilized with typical erosion control
measures and the streambanks replanted with fast growing vegetation.
5. Sheet 5 indicates a berm to the south of Wetland D is to be removed. It appears that
removing the berm may affect the hydrology of Wetland D. Explain how the removal of the
berm will not result in impacts to Wetland D.
Wetland D is a small depressional floodplain wetland on the downstream side of the berm.
By removing the berm, additional flood flows will access the floodplain in this immediate
area and provide more natural hydrology to the wetland. The removal of the berm should
have no negative impacts to Wetland D.
6. Condition 7 of Water Quality Certification 3885 requires that "All work in or adjacent to
stream waters shall be conducted so that the flowing stream does not come in contact with
the disturbed area." Provide a description and work sequence of how you plan to meet this
condition.
Detailed construction notes and work sequence are attached.
Z inc ason Zink, PE
Tel: [phone]
[e-mail]
Attachments:
Agent Authorization Forms
Revised Section C.3.
Construction Notes and Schedule
Page 2 of 2

SAMPLE AGENT AUTHORIZATION FORM
PROPERTY LEGAL DESCRIPTION:
LOT NO. PLAN NO. PARCEL ID: n 0 3 V- 7 3 S y
STREET ADDRESS: I l ,YZ 7 S a ✓ 4-k Al 2.X4
Please print:
Property Owner: dke-,- 5�•��
Property Owner:
The undersigned, registered property owners of the above noted property, do hereby authorize
Jason Zink of Zink Environmental, PLLC
(Contractor / Agent) (Name of consulting firm)
to act on my behalf and take all actions necessary for the processing, issuance and acceptance of
this permit or certification and any and all standard and special conditions attached.
Property Owner's Address (if different than property above):
Telephone:
We hereby certify the above information submitted in this application is true and accurate to the
best of our knowledge.
Authorized Signature
r
Date: 7—,2c -�
Authorized Signature
Date:

SAMPLE AGENT AUTHORIZATION FORM
PROPERTY LEGAL DESCRIPTION:
LOT NO. PLAN NO.
PARCEL ID: J'� -11!2 - or) - ZA- S—�• S`(
STREET ADDRESS: /-/ 11 L' ✓ 1 -,2 6. .S o , • -&
5CrOc F P. A A/r .2� 7 -�I
Please print: (�
I
Property Owner: �' c� e ctnn a� Yti r &.tn
Property Owner::.r._
The undersigned, registered property owners of the above noted property, do hereby authorize
Jason Zink of Zink Environmental, PLLC
(Contractor / Agent) (Name of consulting firm)
to act on my behalf and take all actions necessary for the processing, issuance and acceptance of
this permit or certification and any and all standard and special conditions attached.
Property Owner's Address (if different than property above):
Telephone:
We hereby certify the above information submitted in this application is true and accurate to the
best of our knowledge.
Authorized Signature
M
Date:
Authorized Signature
Date:

C. Proposed Impacts Inventory
1. impacts Summary
1 a. Which sections were completed below for your project (check all that apply).
❑X Wetlands ❑X Streams — tributaries ❑ Buffers ❑ Open Waters ❑ Pond Construction
2. Wetland Impacts
If there are wetland Impacts proposed on the site, then complete this question for each wetland area Impacted.
2a 2b, 2c, 2d. 2e.
2f.
Wetland impact Type of impact Type of wetland Forested Type of jurisdiction
Area of
number Corps (404,10) or
Impact
Permanent (P) or DWQ (401, other)
(acres)
Temporary (T)
W1 P Fill Bottomiand Hardwood Forest Yes Corps
0 036
W2 Choose one Choose one Yes /No
W3 Choose one Choose one Yes /No
W4 Choose one Choose one YeslNo
W5 Choose one Choose one I Yes /No
W6 Choose one Choose one Yes /No
2g. Total Wetland Impacts: I
0.036
2h Comments:
The realignment of Grassy Creek to the east will encroach upon Wetland B impacting 0.036 acres. This wetland is fed by a spring outside the project
area and transitions to a depressionei floodplain wetland with early successional vegetation within the zone of impact.
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.
3a. 3b, 3c, 3d. 3e. 3f. 3g�
Stream impact Type of impact Stream name Perennial (PER) or Type of Average Impact
number intermittent (INT)? jurisdiction stream length
Permanent (P) or width (linear
Temporary (T) (feet) feet)
S1 P Stream Enhancement Grassy Creek - Reachl I PER Corps 35 I 2885
S2 P Stream Enhancement Grassy Creek - Reach2 PER Corps 35 I 7436
S3 P Stream Restoration Grassy Creek - Reach3 PER Corps 35 I 2,118.1
S4 P Fill Stream 3 PER Corps 3 I 153.5
S5 P Stabilization Stream 3 PER Corps 3 34.5
S6 P Culvert Stream 4 INT Corps I 3 345 1I
3h. Total stream and tributary impacts 3.3727 I
3i. Comments:
Grassy Creek will be enhanced by habitat improvement structures and stabilization measures in Reaches 1 and 2 while Reach 3 includes channel
realignment and profile adjustment to improve aquatic habitat and stability See section 133e for a detailed description Stream 3 is being impacted due
to the realignment of Grassy Creek toward the right bank The stabilization impact on Stream 3 accounts for the section of stream that will be adjusted
to tie into Grassy Creek. Stream 4 is a low quality jurisdictional ditch. To improve stability, the culvert at the upstream end is being extended 34.5 feet.
Page 4 of 10
PCN Form — Version 1.4 January 2009

Construction Notes
During project implementation, BMPs /conservation measures will be implemented to reduce
sedimentation into Grass- Creek. Efforts will be made to limit and expedite equipment time
in the stream channel. When possible, work will occur from the streambanks. The design
,attempts to minimize sedimentation and other potentially- negative impacts through the
following practices:
• The contractor will be required to mobilize all equipment and materials necessary for
stabilization work before beguuhing any stream work.
• The contractor will be required to stage and store equipment and materials outside of
the trout buffers (25 linear feet from top of banks).
• Equipment will be well - maintained, cleaned prior to mobilization, and checked dailN
for leaks of petroleum products.
• Fueling will be performed in a contained area outside of the trout buffer.
• The contractor will be required to stage work such that disturbed areas will be
stabilized in phases with seeding, mulch and biodegradable (coir) erosion control
matting (where appropriate).
• All trees, utilities and other site features will be protected unless marked for removal
or relocation.
• All work in or adjacent to stream waters will be conducted in a dry work area to the
extent possible.
• To the extent possible, construction will be timed to occur during low water events.
• Tree protection fencing will be used to protect jurisdictional waters that will not be
impacted.
• Appropriately sized equipment will be utilized to prevent excessive compacting and
minimize clearing.
• Construction scheduling and staging will be timed to minimize the amount of time
spent working in die stream channel.
Construction Schedule /Work Sequence
1. Obtain erosion and sedimentation plan approval, trout buffer variance waiver, and
all other applicable permits.
2. Post certificate of approval for land disturbance at site.
3. Flag the work limits and stake out the extents and elevations of the project.
4. Flag the extents of the trout buffer in areas where no land disturbance will occur.

5. Locate all underground utilities within the worksite.
6. Hold preconstruction conference prior to starting construction.
7. Install construction entrances, access roads and silt fence per the attached plan
sheets and details.
8. Inspect erosion and sedimentation control practices daily and after significant
rainfall events. Make needed repairs immediately.
9. Construct three stormwater treatment wetlands per the attached plan and detail
sheets.
10. Stockpile materials for stream work (e.g., boulders, logs, woody debris) outside of
the trout buffer (at least 25 feet from the top of bank).
11. To the extent practicable, work iteratively- from upstream to downstream
throughout the project reaches. Contractor shall limit streambank disturbance to
areas that can be completed and stabilized during one day of work.
12. From STS 0 +13 — 3 +01:
a) As needed to implement bank grading, remove vegetation from the
eroding right streambaulk. Do not remove healthy, native vegetation from
areas where no grading or structure installation will occur. Stockpile
vegetation for replanting, as appropriate.
b) Working from outside the active channel, grade the right bank per plans.
C) Install in- stream structures and habitat enhancement per plan. When
possible, perform work from streambanks in order to minimize time spent
working in the channel.
d) Install coir streambank matting and temporary- seeding on all disturbed
surfaces on the streambank up to the top of bank.
13. From STA 3 +01 — 10 +45:
a) Mountain existing streambank vegetation, wide the exception of minor
removal as needed for structure installation or access.
b) Install in- stream strictures and habitat enhancement per plan. When
possible, perform work from streambanks in order to muiimize time spent
working u7 the channel.
c) Install coir streambank matting and temporary seeding on all disturbed
surfaces on the streambank up to the top of bank.
E

14. From STA 10 +45 — 18 +00:
a) As needed to implement bank grading and minor channel realignment,
remove vegetation from the right streambank. Do not remove healthy,
native vegetation from areas where no grading or structure installation will
occur. Stockpile vegetation for replanting, as appropriate.
b) Realign channel to the east per plans (approximately STA 10 +45 — 13 +45).
Ensure constructed slopes are graded at a 3:1 slope or flatter, unless
directed otherwise by the field engineer. When possible, perform work
from streambanks in order to minimize time spent working in tine channel.
c) Working from outside the active channel, grade streambanks to a stable
slope per plans.
d) Install in -stream strictures and habitat enhancement per plan. When
possible, perform work from streambanks in order to minimize time spent
working in the channel.
e) Install colt streambank matting and temporary seeding on all disturbed
surfaces on the streambank up to the top of bank.
15. From STA 18 +00 — 28 +00:
a) As needed to implement channel realignment and floodplain creation,
remove vegetation from the wooded area to the east of the strearn. Do
not remove healthy, native vegetation from areas where no grading will
occur. Stockpile vegetation for replaunting, as appropriate.
b) `Forking in the div, excavate new floodplain per plans.
c) Working in the dry, excavate new channel per plans. Stockpile excavated
material between the existing and ne,,v channels. Ensure constructed
slopes are graded at a 3:1 slope or flatter, unless directed otherwise by the
field engineer. Ensure that an earthen plug remains intact at the upstream
end of the new (dry) channel during construction.
d) Working in the dry, install in- strearn structures, riffles, and toe wood.
e) Once all grading and structure installation in the new channel is completed,
turn flow into the realigned channel by removing the earthen plug at the
upstream end of the new channel.
Allow the old channel, contaitning clean water, to dewater through gravity
flow.
g) Once the old channel is dry, install compacted soil plugs at the upstream
and downstream ends of the old channel.
h) Once the old channel is securely= plugged on both ends, use stockpiled
material to fill the entirety of the old channel per plans.
i) Install coir streambank matting and temporary, seeding on all disturbed
surfaces on the streambank up to the top of bank.

16. From STA 28 +00 — 31+63:
a) Maintain existing streambank vegetation, with die exception of minor
removal as needed for structure installation or access.
b) Install iii- stream structures and habitat enhancement per plain. When
possible, perform work from streambanks in order to minimize time spent
working in the channel.
c) Install coir streambank matting and temporary, seeding on all disturbed
surfaces on the streambank up to the top of bank.
17. Any area disturbed within 25 feet from the top of the stream bank shall be
provided with temporary ground cover specified in the vegetation plan within 10
calendar days, unless superseded by the conditions of General Stormvater Permit
NCG 010000.
18. Once site is stabilized, remove and dispose of all non - biodegradable erosion
control devices.
19. When appropriate, install permanent vegetation per planting plans.
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