HomeMy WebLinkAbout20090246 Ver 2_More Info Received_20101001o q_ a a u @LeJ®r,
O C T r 2C.
DENR. WATER QUALI-fY
WETLANDS AND STOR'"Pi 6TER BRANCH
THE September 24, 2010
WOOTEN
COMPANY Mr. Ian McMillan
NC DENR Division of Water Quality
ENGINEERING 401/Wetlands Unit
P L A N N I N G 1650 Mail Service Center
Raleigh NC 27699-1617
A R C H I T E C T U R E
Re: Request for Additional Information, 401 / 404 Permit
City of Creedmoor
Water Distribution and Sanitary Sewer System Improvements
TWC No. 2084-BU
Dear Ian:
We have received your letter dated September 22, 2010 in which a compensatory
mitigation plan for mechanized clearing within wetlands was requested. The request was
based on our classification of the impact as mechanized clearing.
During construction, the contractor will have to remove a portion, or possibly all of the
trees within the construction corridor as shown on the plans in order to accommodate
installation of the proposed utilities. The Clearing and Grubbing section of the project
manual states:
1.01 CLEARING AND GRUBBING
A. Clear total width of permanent easement. Clear within temporary
construction easement only as necessary for construction.
B. Grub within the permanent easement only as necessary for the installation of
the work. Do not grub within the temporary construction easement.
C. Clear and grub area within the proposed fence line of the pump stations.
D. Clearing shall consist of cutting and removal of vegetation to the existing
ground surface and removal of debris. Debris shall include, but not be limited
to, fences, steps, walls, chimneys, footings, foundation slabs, basements,
signs, junked vehicles, and other rubble.
E. Grubbing shall consist of the removal of roots over 3 inches in diameter,
matted roots, stumps, and other vegetable matter to 12 inches below existing
grade.
As a result, the stumps located beyond the permanent maintenance corridor will remain in
350 North Cox Street Suite 26 place allowing new growth to sprout. Over time, these areas will return to forested
Asheboro NC 27203 wetlands. In addition, since wetland areas within the construction corridor will be
returned to preconstruction elevations, disturbed areas will remain wetlands.
336.626.5322
fax 336.626.5722
Mr. Ian McMillan
NC DENR DWQ
410/Wetlands Unit
September 24, 2010
Page 2
Due to NCDENR rules requiring the City to have access to all sewer lines, the City must
maintain a 10-foot wide corridor. This corridor will be mowed periodically but will
function as herbaceous wetlands. This is the only permanent impact to the wetlands.
Enclosed is a revised Wetland Impact Table for Part C. Proposed Impacts Inventory
submitted with the PCN. On this table the temporary impact to wetlands has been revised
from mechanized clearing to hand clearing.
Please review the submittal and contact us with your approval; or if you have questions,
comments or require additional information.
Sincerely,
THE WOOOTTEEN COMPANY
John C. Grey, PE
Project Manager
/cde
Enclosure
cc: Tom Mercer, City Manger
Eric Alsmeyer, ACOE
rT 1 2010
C. Proposed Impacts Inventory
DEYR - VWATF-R QUALITY
urETL?VDS AND STORIVY A;ER ERIWCH
2. Wetland Impacts.
'Revised 9/2/10 to reflect 10' maintenance corridor within wetlands throughout except 15' maintenance corridor at impact shown on Sheet 27 at station
7+00 due to parallel utilities with 10' seperation. Impact shown on Sheet 33 at Station 34+25 revised to temporary since no conversion of wetland type
will occur due to maintenance corridor.
`Revised 9/23/10, mechanized clearing only within 10' maintenance corridor within wetlands throughout except 15' maintenance corridor at impact shown
on Sheet 27 at station 7+00 due to parallel utilities with 10' seperation. Remainder of clearing within wetlands will be by hand clearing, leaving stumps to
allow reforestation of area.
2a. Wetland impact number -
Permanent (P) or Temporary (T)
2b. Type of Impact
2b. Type known))
(if kno))
2d. Forested 2e. Type of
jurisdiction
(Corps - 404, 10
DWQ - non-404,
other
2f. Area of
impact
(acres)
Golden Pond Interceptor
1 Sh 41 Sta 0+95, P Mechanized Clearing & Excavation es Corps 404 0.04
Sh 41 Sta 0+95, T Hand Clearing es Corps 404 0.11
2- Sh 41 Sta 2+20, P Mechanized Clearing & Excavation es Corps 404 0.01
Sh 41 Sta 2+20, T Hand Clearing es Corps 404 0.01
3 Sh 41 Sta 3+00, P Mechanized Clearing & Excavation es Corps 404 0.02
Sh 41 Sta 3+00, T Hand Clearing es Corps 404 0.05
4- Sh 41 Sta 9+50, P Mechanized Clearing & Excavation es Corps 404 0.01
5 Sh 42 Sta 20+50, P Mechanized Clearing & Excavation es Corps 404 0.02
Sh 42 Sta 20+50, T Hand Clearing es Corps 404 0.02
Brassfield Road Interceptor
6- Sh 32 Sta 3+00, P Mechanized Clearing & Excavation es DWQ non-404 0.00
7- Sh 32 Sta 5+25, P Mechanized Clearing & Excavation es Corps 404 0.01
Sh 32 Sta 5+25, T Hand Clearing es Corps 404 0.00
8 Sh 32 Sta 8+50, P Mechanized Clearing & Excavation es Corps 404 0.02
Sh 32 Sta 8+50, T Hand Clearing es Corps 404 0.03
9- Sh 33 Sta 34+25, T Hand Clearing no Corps 404 0.02
Park Avenue Interceptor
10 Sh 38 Sta 33+25, P Mechanized Clearing & Excavation es Corps 404 0.01
Sh 38 Sta 33+25, T Hand Clearing es Corps 404 0.01
11 - Sh 38 Sta 39+00, P Mechanized Clearing & Excavation es Corps 404 0.01
12 Sh 38 Sta 40+50, P Mechanized Clearing & Excavation es Corps 404 0.00
Sh 38 Sta 40+50, T Hand Clearing es Corps 404 0.01
13 Sh 39 Sta 46+00, P Mechanized Clearing & Excavation es Corps 404 0.07
Sh 39 Sta 46+00, T Hand Clearing es Corps 404 0.25
Park Avenue Interceptor
14- Sh 49 PS Site, T Hand Clearing es Corps 404 0.00
Robertson Creek Interceptor
15- Sh 27 Sta 7+00, P Mechanized Clearing & Excavation es Corps 404 0.13
Sh 27 Sta 7+00, T Hand Clearing es Corps 404 0.22
16 Sh 29 Sta 28+50, P Mechanized Clearing & Excavation es Corps 404 0.02
Sh 29 Sta 28+50, T Hand Clearing es Corps 404 0.05
17- Sh 29 Sta 30+00, P Mechanized Clearing & Excavation es Corps 404 0.00
Sh 29 Sta 30+00, T Hand Clearing es Corps 404 0.02
18 Sh 29 Sta 34+00, P Mechanized Clearing & Excavation es Corps 404 0.08
Sh 29 Sta 34+00, T Hand Clearing es Corps 404 0.22
19 - Sh 30 Sta 53+50, P Mechanized Clearing & Excavation partially Corps 404 0.04
Sh 30 Sta 53+50, T Hand Clearing partially Corps 404 0.08
iotai iempoiaiyImpau 109
Total Permanent Impact 0.48