20090635 Ver 1_More Info Received_20090825

~ ARCADIS

MEMO

To:
Ian McMillan

Copies:
File

From:
Linda Diebolt

Date:
25 August 2009

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ARCADIS Project No.:
GRHPT007.B001

Subject:
Response to U.S. Army Corps of Engineers Comments
Charlotte Avenue Stormwater Improvements
DWQ #: 09-0635

ARCADIS
801 Corporate Center Drive
Suite 300
Raleigh
North Carolina 27607
Tel [phone]
Fax [phone]

ARCADIS G&M of North Carolina, Inc.

NC Engineering License # C-1869
NC Surveying License # C-1869

lan,

Attached is a copy of the response to comments that we provided to the Corps for the above referenced
project. A hard copy is also being provided to Sue Homewood directly, Please let me know if you have
any questions or comments. Have a great day. Linda

document!

Page:
1/1

~ ARCADIS

To:
Sue Homewood

Copies:
Derrick Boone (City of High Point)

ARCADIS
801 Corporate Center Drive
Suite 300
Raleigh
North Carolina 27607
Tel [phone]
Fax [phone]

MEMO

ARCADIS G&M of North Carolina, Inc.

NC Engineering License # C-1869
NC Surveying License # C-1869

From:
Linda Diebolt

Date:
21 June 2009

ARCADIS Project No.:
GRHPT007.B001

Subject:
Response to Comments - SAW-2009-01113
Charlotte Avenue Stormwater Improvements

Sue,

Below is the response to the Incomplete Application Notification that we provided to the U,S. Army Corps
of Engineers. If you have any questions or need additional information, please feel free to call or e-mail
me. Starting today, I will be out in the field for the rest of the summer (at least the middle of August), but I
will be checking voice mail in the mornings and e-mail in the evenings. I can also be reached via cell at
906.1775 at any time.

Response to Comments:

1) A very small amount of work will be performed within the 1 OO-year flood zone. Coordination with
the City of High Point Certified Floodplain Manager, Mr. Terry Kuneff, PE, has been ongoing
regarding the proposed construction activity within the flood plain. A Conditional Letter of Map
Revision (CLOMR) is not required relative to the proposed project. All approvals required by the
City of High Point will be obtained prior to commencement of proposed work.

2) Temporary impacts associated with a cofferdam that will be utilized during construction of this
project at S1 (see attached table and Figure 3). Plan view and cross sectional drawings of the
cofferdam are attached, At S2 and S3, the water will be by-passed pumped from an access port
within the existing culvert upstream of the proposed work and discharged into the stream channel

Page:
1/2

ARCADIS

downstream of the proposed work (Figure 4), At 54, 55, and 56, water within the stream channel
will be by-pass pumped from an access port within the existing culvert upstream of the proposed
work to an access port within existing culvert downstream of the proposed work (Figures 5 and 6).

3) Proposed impacts at 51, 52, 53, 54, 55, and 56 have been depicted on the attached 11 X 17
design drawings.

4) It has been noted that the project will be evaluated for a NWP 39 verification.

Thank you and have a great day,

Linda

Page:
2/2

1. 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 Type of jurisdiction Average Impact
number - (PER) or (Corps - 404, 10 stream length
Permanent (P) or intermittent DWQ - non-404, width (linear
Temporary (T) (INT)? other) (feet) feet)
S1 D P ~ T Coffer dam UT to Boulding DPER ~ Corps 10 40
Branch ~INT DDWQ
S2 D P ~ T By-pass UT to Boulding DPER ~ Corps 10 20
Discharge Line Branch ~INT DDWQ
S3 D P ~ T By-pass UT to Boulding DPER ~ Corps 10 20
Discharge Line Branch ~INT DDWQ
3h. Total stream and tributary impacts 80

Legend

o Coffer Dam
By-Pass Pump
~ Permanent Impacts
~ Temporary Impacts
"~A Erosion Control Matting
- Stream Buffer
-Intermittent Stream
- Proposed Stormwater Structure
- Existing Stormwater Structure to be Removed
Existing Stormwater Structure to be Abandoned and Plugged

N

W+E

Charlotte Avenue Stormwater Improvements
High Point, Guilford County, North Carolina
o 15 30 60
Feet

FIGURE
3

s

1 inch = 30 feet
Source: 2008 Aerial Photograph

Legend

o Coffer Dam

- - By-Pass Pump
~ Permanent Impacts
~ Temporary Impacts
o Erosion Control Matting
- Stream Buffer
-Intermittent Stream
- Proposed Stormwater Strudure
- Existing Slormwaler Strudure 10 be Removed
Existing Stormwater Strudure to be Abandoned and Plugged

N

W+E

Charlotte Avenue Stormwater Improvements
High Point, Guilford County, North Carolina
o 20 40 80
Feet

FIGURE
4

s

1 inch = 40 feet
Source: 2008Aerial Photol1aph

Legend

By-Pass Pump
~ Pennanent Impacts
Stream Buffer
-Intermittent Stream

- Proposed Stormwater Structure

- Existing Stormwater Structure 10 be Removed

Existing Stormwater Structure to be Abandoned and Plugged

N

W+E

)
Charlotte Avenue Stormwater Improvements
High Point, Guilford County, North Carolina
o 15 30 60
Feel

s

FIGURE

1 inch = 30 feel
Source: 2008 Aerial Photo17ii1ph

5

83
Approximately 100 square feet of impact to
Zone 1 will occur in association with stormwater
imrprovement upgrades; however, the riparian
buffer is located within a developed residential
area and consists of impervious surfaces and
maintained lawn
(Note: 83 is included on Figures 5 and 6)

Legend

By-Pass Pump
~ Permanent Impacts
- Stream Buller
-Intermittent Stream
- Proposed Stormwater Structure
- Existing Stormwater Structure 10 be Removed
Existing Stormwater Structure to be Abandoned and Plugged

N

W+E

FIGURE

s

1 inch = 30 feet
Source; 2008Aerial Photol1aph

6

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