20220398 Ver 1_Plan Revision_20220318

1
Anderson, Mitchell L
From:Moore, Andrew W
Sent:Friday, March 18, 2022 9:26 AM
To:Anderson, Mitchell L
Cc:Wojoski, Paul A
Subject:FW: [External] revised Mitchell Co Schools PCN
Attachments:MItchell Co School PCN impact tables revised.pdf; USACE Culvert Profile_2022-03-17.pdf; USACE
Master_2022-03-17 revised impact map.pdf; PCN Form Additional Information revised.pdf
Mitchell, 

See email below and attachments regarding the subject project. 

Please make sure to upload to Laserfiche and let me know if you would like to discuss. 

Thanks, 
Andrew 

From: Eric Romaniszyn <[e-mail]>  
Sent: Friday, March 18, 2022 9:19 AM 
To: Boggs, Brandee C CIV USARMY CESAD (USA) <[e-mail]>; Wojoski, Paul A 
<[e-mail]> 
Cc: Leslie, Andrea J <[e-mail]>; Hamstead, Byron A <[e-mail]>; Moore, Andrew W 
<[e-mail]>; Clement Riddle <[e-mail]> 
Subject: [External] revised Mitchell Co Schools PCN 

CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to 
Report Spam. 

Hello Brandee and Paul,  

Regarding our recently submitted Mitchell Co Schools PCN, a mapping error was discovered that requires an update to 
the application.  

Attached is the revised impact map to replace the figure found in Attachment B. You will note there is additional 12’ of 
culvert at the planned entrance. It is needed to capture a small stream coming from off the property to the northeast. 
Also, wetlands W2 and W3 have been merged into a single wetland WB, which is larger than in the original impact map. 
The total wetland impacts increased from 0.084 to 0.098 acres, and the total stream impacts increased from 66 (0.006 
ac) to 77.6 LF (0.0086 ac). Also attached are the PCN impact tables and Additional Comments (Attachment A) with 
updated numbers.  

Please let me know what other information you need and/or steps I need to take for these revisions. Thank you. 

Thank you. 

Eric 

Eric Romaniszyn 
Senior Scientist 
2

145 7th Ave West, Suite B, Hendersonville, NC 28792; EnviroScienceInc.com 
O. 828.698.9800 | C. 865.406.1281 | 24h Emergency: (888) 866‐8540 
OH | TN | VA | WV | NC  

Section B, 3e. Describe the overall project in detail, including the type of equipment to be
used:

The approximately 14.05-acre site is proposed for development of a new middle school. Land use
is an old farm field with vegetation being nearly all pasture with scattered trees and shrubs (see
Attachment F, Photo Log). Much of the site will be cleared and graded for the main building with
associated entrance road, parking, and utilities (see Attachment B, Impact Map).

Approximately 88 LF of 42” diameter HDPE culvert will be installed to route a stream under the
eastern proposed entrance. A Nationwide Permit 18 is requested to authorize this impact. The
culvert would be embedded to allow for aquatic passage. We estimate 26.67 cubic yards of fill
will be required.

The development will connect to existing municipal water utilities along Old Ledger Road on the
western project boundary. This may require one stream crossing (temporary impact) due to the
location of the stream channel, depending on final site design. If so, the utility lines will be installed
“in-the-dry” under the stream bed via open cut (see Attachment B, Impact Map).

Site preparation will involve placing fill in the stream and wetland areas. The total stream impacts
would be 0.0086 acres and wetland impacts would be 0.098 acres. Authorization for these is
requested under a Nationwide Permit 39.

Typical construction equipment will be used during development of the site, including bulldozers,
excavators, backhoes, dump trucks, etc.

Section D, 1a. Specifically describe measures taken to avoid or minimize the proposed
impacts through project design.

The project design avoids permanent impacts to 0.758 acres of wetland (89% of wetland area on
site) and 973.4 linear feet of stream (93% of stream length on site). Only two permanent stream
impacts are proposed for installation of two culverts at the school entrance road. All other
proposed structures and infrastructure including entrance roads, parking areas, and the building
footprint are proposed in uplands.

Section D, 1b. Specifically describe measure taken to avoid or minimize proposed impacts
through construction techniques.

Appropriate erosion and sediment control measure will be implemented to avoid unintended
impacts to waters on and adjacent to the site. A pump-around system will be used to install the
culverts and utilities in the dry (see Attachment B, Impact Map).

Section F, 7. Historic or Prehistoric Cultural Resources.

The proposed project is within 1-mile of two “Determined Eligible Boundaries”, the Upper Poplar
School (ML0098, surveyed only) approximately 0.3 miles to the north along Ledger School Road,
and the Lydia Holman House (ML0055, surveyed only) approximately 0.9 mile to the west along
SR 226 HWY. Development activities will be contained to the project site and it is the opinion of
ClearWater that project construction will not negatively affect any adjacent properties. Due to the
terrain and vegetative cover, the new school will be outside of the veiwshed of these properties.
Data were gathered from NCHPO's HPOWEB 2.0 for General Audience. Accessed March 8,
2022.
NO 1H
0 20
Q
EXISTING 30' STREAM
BUFFER (TYP)
EXISTING WETLANDS (TYP)
Eliigelpts,
PA
NCBELS #: C-2184
m
I
PERMANENT STREAM IMPACT SA
65.61 LF/0.008 AC AREA
PROPOSED 2' CONTOURS
�lg
2739,3
PERMANENT STREAM IMPACT SC
12.00 LF/0.0006 AC AREA
CONNECTION TO EXISTING
48" RCP STORM PIPE
i v `v
/ / 7,�
/ /�� �v ` �v 2710—
\ `
o
2750
2740
2730--
EXISTING 2' CONTOURS
EXISTING STREAM (TYP)
es
as
P
2750
FINISHED GRADE
35LF-48" RCP © 2.8%
EXISTING GRADE
135LF-48" EX. RCP CO 2.8%
51LF-54" HDPE © 4.1%
2740 274
2730 2730
• p O
N N
W X
> r
o - O'
`'+ISO
M r) N
+ M N
O
N z Z_
a�>;
2720 2720--
N Z z
CULVE
Z1
0
0
0_
2740
^
o O 111
•o
N N 2720
+ K) C�1 N
ONz
Q j >
CO
2710 2710-- 2710
in o in
co 0 f-
0 0 0
CULVERT Z2
MITCHELL SCHOOL
CULVERT A DISTURBANCE
MARCH 2022

NORTH
0 120'
PROPERTY LINE (TYP)
Polansky
D.B. 139, Pg. 228
PIN 0872-00-61-7575
NCBELS #: C-2184
Polansky
D.B. 139, Pg. 228
PIN 0872-00-61-7575
Taylor
D.B.322, Pg. 606
PIN 0872-00-70-2694
Pitman
D.B. 203, Pg. 425
PIN 0872-00-71-447,
EXISTING STREAM
BUFFER (TYP)
GFA: 70,580 SF
FFE: 2752.00
PROPOSED 54" HDPE PIPE
South N.C. Highway 226
NOTE: STREAM IMPACT AREAS ARE MEASURED
FROM THE TOPS OF BANKS AND THE
PROPOSED LIMITS OF GRADING.
Greene
D.B.345, Pg. 449 McKinney
D.B.473, Pg. 335
PIN 0872-00-71-9584
UT
tea,
PERMANENT STREAM IMPACT SA
65.61 LF/0.008 AC AREA
CONNECTION TO EXISTING
48" RCP STORM PIPE
PERMANENT STREAM IMPACT SC
12.00 LF/0.0006 AC AREA
EXISTING WETLANDS (TYP)
PERMANENT WETLAND IMPACT WC
2809.23 SF/0.064 AC
PERMANENT WETLAND IMPACT WB
1456.19 SF/0.033 AC
IMPERVIOUS INFORMATION:
EXISTING: 0.8%
PROPOSED: 28%
SUMMARY:
PROJECT SIZE-14.05 AC
WATERS ON SITE:
STREAMS— 1051.0 LF/0.104 AC
WETLANDS— 0.856 AC
PROPOSED IMPACTS:
TOTAL PERM. WETLAND IMPACTS— 0.098 AC
TOTAL TEMP. WETLAND IMPACTS— 0 AC
TOTAL PERM. STREAM IMPACTS— 77.61 LF/.0086 AC
TOTAL TEMP. STREAM IMPACTS— 0 LF/0 AC
MITCHELL SCHOOL
MASTER PLAN BULLETIN
MARCH 2022