20071093 Ver 4_Modifications_20110310

WITHERS & RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
1410 COMMONWEALTH DRIVE, SUITE ioi
WILMINGTON, NORTH CAROLINA, 28403
[phone]
FAX [phone]
T0: NC Division of Water Quality - 4o1 Wetlands Unit
2321 Crabtree Blvd, Suite 250
Raleigh, NC 27604
WE ARE SENDING YOU
? Shop Drawings
? Copy of Letter
® Attached
? Prints
? Change order
the following items:
? Specifications
COPIES DATE NO. DESCRIPTION
3/8/11 02061 .o Additional Information Requested b Lauren Witherspoon
/8/11 02o61 .o Revised PCN Impact Tables
8/11 02o61 .o Revised Impact Exhibits & 6
/8/11 02o61 .o Email from Corps of Engineers

THESE ARE TRANSMITTED as checked below:
® For approval ? Approved as submitted
? Foryour use ? Approved as noted
? As requested ? Returned for corrections
? For review and comment ?
? FOR BIDS DUE 20 ? PRINTS RETURNED AFTER LOAN TO US
REMARKS:
COPY TO: File SIGNED: Troy Beasley
? Resubmit
? Submit
? Return
- copies for approval
copies for distribution
corrected prints
LETTER OF TRANSMMAL
DATE 3/8/11 JOB NO. 02061 .0
ATrENnoN Mr. Ian McMillan
PHONE # [phone]
RE: Crabtree Creek North Bank 2" Sewer Replacement
DWQ Pro' #o -10 , Ver. _aI6
Additional Information Submittal

? Under separate cover via _
? Plans ? Samples
? Diskette ?
If enclosures are not as noted, kindly notify us at once.
WITHERS &- RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
March 8, 2011
NC-Division of Water Quality
Attn: Mr. Ian McMillan
512 N. Salisbury Street - 91i, Floor
Raleigh, NC 27604
G
MAR 10 2011
DENR :WATER Q?
We, . Q.___
Re: Crabtree Creek North Bank 42" Emergency Sewer Replacement
Submittal of Additional Information for Authorization of Permanent Stream
Impacts
DWQ Project # 07-1093, Ver..Z 3
Dear Mr. McMillan:
This letter is in response to the email from Lauren Witherspoon with DWQ, dated
February 10, 2011, regarding the placement of rip-rap within the disturbed areas of the
stream within the existing 40' sewer easement associated with sewer crossings of Marsh
Creek and the stream crossing adjacent to the railroad bridge.
On behalf of the City of Raleigh, we are requesting a revision to the DWQ 401-
certification for the 42" Crabtree Creek North Bank Sewer Emergency Replacement
project. The current request is for 67 if of permanent stream impacts, 68 if of
temporary stream impacts, 0.294 acres of temporary wetland impacts and 1,024 sq
ft of permanent buffer impacts to Zone 1 associated with the replacement of the 42"
Crabtree Creek North Bank Sewer.
Project History
Approximately 4500 if of the Crabtree Creek North Bank 42" sewer line was replaced.
The replacement of the 42" sewer line resulted in 125 If of temporary stream impacts and
0.294 acres of wetland impacts, which were authorized under a NWP 3 from the Corps
and a Water Quality Certification and Buffer Authorization from DWQ (DWQ Project
#07-1093, Ver. 2).
Proposed Permanent Impacts
During the replacement of the 42" sewer line, it was determined that rip-rap was needed
to stabilize the disturbed stream banks of the crossing of the UT to Crabtree Creek,
adjacent to the railroad bridge (Impact Exhibit 3) and the Marsh Creek stream crossing
(Impact Exhibit 6). The rip-rap was necessary to stabilize the disturbed stream banks, as
the flow rates within these streams were so high that the vertical stream banks would
iii MacKenan Drive I Cary, NC 27511 tel.: [phone] I fax: [phone]oo8 I www.withersravenel.com
1410 Commonwealth Drive I Suite loi I Wilmington, NC 28403 1 tel: [phone] fax: [phone]
416 D Gallimore Dairy Road I Greensboro, NC 27409 I tel: [phone] ( fax: [phone]oo8
N.C. Engineering Board No. C-0832
WITHERS &- RAVENEL
ENGINEERS I PLANNERS 1 SURVEYORS
erode and fail without stabilization. Lauren Witherspoon with your office has reviewed
these crossings and concurs that stabilization with rip-rap is necessary to prevent erosion.
Impact Exhibit 3
The proposed rip-rap within the stream bed of the UT to Crabtree Creek (Impact Exhibit
3) is the result of replacement of existing rip-rap that was installed when the 42" sewer
was originally constructed. Since the rip-rap within the stream bed was existing, the
replacement of the rip-rap within the stream bed was authorized under the original NWP
3 and DWQ 401 Water Quality Certification (DWQ Project #07-1093, Ver. 2).
Additional rip-rap will be placed on the stream banks at this crossing for stabilization.
Since no rip-rap will be placed within the stream bed, there will be no stream impacts.
However, Lauren Witherspoon determined that the placement of rip-rap on the stream
banks will result in permanent buffer impacts, and requested that the buffer impacts be
quantified and addressed in the Buffer Impact Table. Therefore, placement of rip-rap on
the stream banks at Impact Exhibit 3 will result in 462 sq ft of permanent buffer impacts
within Zone 1.
Impact Exhibit 6
The placement of rip-rap within the stream bed and banks of Marsh Creek are necessary
to stabilize the disturbed areas of the stream and will result in 45 if of permanent stream
impacts. Due to the vertical banks and high flow rate within Marsh Creek, the rip-rap is
necessary to stabilize the disturbed areas to prevent erosion and failure of the stream
banks. The placement of rip-rap on the stream banks will result in 742 sq ft of permanent
buffer impacts within Zone 1.
The Impact Tables within the PCN have been revised to reflect the placement of rip-rap
within the streams and buffer, as previously discussed. Copies of the PCN Impact Tables
have been provided as an Appendix. Revised Impact Exhibits 3 & 6 have also been
provided as an Appendix.
Mitigation
Since the proposed permanent stream impacts are less than 150 If, there is no proposed
stream mitigation.
Coordination with Corps of Engineers
Jamie Shern with the Corps of Engineers was contacted regarding the permanent stream
impacts associated with the use of rip-rap for stream stabilization. In an email dated
ill MacKenan Drive I Cary, NC 275111 tel.: [phone] fax: [phone]oo8 I www.withersravenet.com
1410 Commonwealth Drive I Suite 1o1 I Wilmington, NC 28403 1 tel: [phone] fax: [phone]
416 D Gallimore Dairy Road I Greensboro, NC 27409 1 tel: [phone] I fax: [phone]oo8
N.C. Engineering Board No. C-o832
WITHERS & RAVENEL
ENGINEERS 1 PLANNERS I SURVEYORS
March 2, 2011, Jamie determined that the permanent stream impacts associated with the
use of rip-rap for stabilization are covered by NWP 3. A copy of email from the Corps
has been provided as an Appendix.
Please feel free to call if you have questions or require additional information.
Sincerely,
Troy Beasley
WITHERS & RAVENEL INC.
Attachments -
1) Revised PCN Impact Tables
2) Revised Impact Exhibits 3 & 6
3) Email from Corps of Engineers
iii MacKenan Drive I Cary, NC 275111 tel.: [phone] fax: [phone]oo8 I www.withersravenef.com
1410 Commonwealth Drive I Suite 1o1 Wilmington, NC 28403 1 tel: [phone] ( fax: [phone]
416 D Gallimore Dairy Road I Greensboro, NC 27409 I tel: [phone] fax: [phone]oo8
N.C. Engineering Board No. C-o832
C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
® Wetlands ® 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 jurisdiction
number - Permanent Type of Type of wetland Forested (Corps - 404, 10 Area of impact
P or Temporary T impact if known DWQ - non-404, other acres
Impact Exhibit 1 Trench and
Herbaceous ? Yes ® Corps
0
067 ac
? P ® T Backfill ® No ® DWQ .
Impact Exhibit 2 Trench and
Herbaceous ? Yes ® Corps
010 ac
0
? P ® T Backfill ® No ® DWQ .
Impact Exhibit 4 Trench and
Herbaceous ? Yes ® Corps
0
016 ac
? P ® T Backfll ® No ® DWQ .
Impact Exhibit 5 Trench and
Herbaceous El Yes ® Corps
201 ac
0
? P ® T Backfll ® No ® DWQ .
2g. Total wetland impacts 0.294 ac
2h. Comments:
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 number Type of Stream name Perennial Type of jurisdiction Average Impact
-Permanent (P) or impact (PER) or (Corps - 404, 10 stream length
Temporary (T) intermittent DWQ - non-404, width (linear
(INT)? other) (feet) feet)
Impact Exhibit 2
Trench UT to Crabtree ® PER ® Corps
16 If
40 If
? P ® T Creek ?INT ®DWQ
Impact Exhibit 3
Trench UT to Crabtree ® PER ® Corps
30 If
28 If
? P ® T Creek ?INT ®DWQ
Impact Exhibit 3 Replacement
of existing rip- UT to Crabtree PER ®Corps
30 If
12 If
® P ? T Creek ?INT ®DWQ
rap
Placement of
Impact Exhibit 7 rip-rap for Marsh Creek ® PER ® Corps 35 If 45 If
® P ? T stabilization of ? INT ® DWQ
stream banks
3h. Total stream and tributary impacts 125 If
3i. Comments:
Page 5 of 11
PCN Form - Version 1.3 December 10, 2008 Version
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individually list all open water impacts below.
4a. 4b. 4c. 4d. 4e.
Open water Name of waterbody
impact number - (if applicable) Type of impact Waterbody type Area of impact (acres)
Permanent (P) or
Temporary T
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4f. Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If and or lake construction proposed, then complete the chart below.
5a. 5b. 5c. 5d. 5e.
Wetland Impacts (acres) Stream Impacts (feet) Upland
Pond ID Proposed use or purpose (acres)
number of pond
Flooded Filled Excavated Flooded Filled Excavated Flooded
P1
P2
5E Total
5g. Comments:
5h. Is a dam high hazard permit required?
? Yes ? No If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If an impacts require mitigation, then you MUST fill out Section D of this form.
6a.
? Neuse ? Tar-Pamlico ? Other:
Project is in which protected basin? ? Catawba ? Randleman
6b. 6c. 6d. 6e. 6f. 6g.
Buffer impact
number - Reason Buffer Zone 1 impact Zone 2 impact
Permanent (P) or for Stream name mitigation (square feet) (square feet)
Temporary T impact required.
Impact Exhibit 3
®P?T Rip-
Rap UT to Crabtree Creek ? Yes
®No 462 sq ft N/A
Impact Exhibit 6
®P?T Rip-
Rap Marsh Creek ? Yes
®No 742 sq ft N/A
6h. Total buffer impacts 1,204 sq ft N/A
6i. Comments: The 1,204 sq ft of permanent buffer impacts to Zone 1 will occur as a result of placement of rip-rap on the
stream banks for stabilization of the disturbed portions of the streams.

Page 6 of 11
PCN Form - Version 1.3 December 10, 2008 Version
Page 1 of 2
Beasley, Troy
Subject: FW: 42" Emergency Sewer Replacement (UNCLASSIFIED)
Attachments: ATT00001.txt
From: Sherri, James F SAW [mailto:[e-mail]]
Sent: Wednesday, March 02, 20114:44 PM
To: Wheeler, Whit
Subject: RE: 42" Emergency Sewer Replacement (UNCLASSIFIED)
Classification: UNCLASSIFIED
Caveats: FOUO
Whit,
I understand that these drawings are modifications of, or in addition to, those activities required for the 4,000+
If of emergency sewer replacement that you notified me of last year. Let me know if I ever assigned you a job
number (USACE Action ID #) for the project. If not, I will need to assign the project a new number. All of the
impacts are covered by NWP 3. Please remember that the reestablishment of preconstruction contours is a
condition of NWP 3. So to the extent that class 2 riprap needs to be placed onto the bed of Marsh Creek, or
others, the riprap should match the elevation of the original stream bed. I think the intent of the condition is that
the riprap not be high enough that it could block the movement of aquatic critters during periods of low flow.
Jamie Sherri
Raleigh Regulatory Field Office
Wilmington District
US Army Corps of Engineers
We would appreciate your feedback on how we are performing our duties. Our
automated Customer Service Survey is located at:
http://per2.nwp,usace.army.mil/survey.htm1
Thank you for taking the time to visit this site and complete the survev.
From: Wheeler, Whit [mailto:[e-mail]]
Sent: Friday, February 25, 201110:49 AM
To: Sherri, James F SAW
Subject: 42" Emergency Sewer Replacement
Jamie,
Attached are drawings of the two creek crossings we discussed for the emergency work that was recently
completed along Crabtree from Raleigh Boulevard down to Marsh Creek. The drawing titled Crabtree CK is an
overall to give you the general location. The 45 feet is the run of Marsh Creek where stone is need for scour
protection. The other crossing will only have stone where it had previously existed as a stream fording just below
the railroad bridge. What permit should be fall under for this work?
Thanks,
W. Whit Wheeler, PE
Construction Projects Administrator
City of Raleigh Public Utilities Dept.
One Exchange Plaza, Suite 620
Raleigh, NC 27601
3/7/2011
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PERMANENT ZONE 1 BUFFER
IMPACT AREA:
242 SQ. FT.
N
W E
• s
Magnetic
V LIMITS OF STREAM
PERMANENT IMPACTED AREA:
52 SQ. FT.
12 L.F.
V aLIMITS OF STREAM \
TEMPORARY IMPACTED AREA: \\ Z NE \1\ RB
174 SQ. FT.
28 L.F. J?? \
/ \ do ZON`
PERMANENT ZONE 1 BUFFER I\
IMPACT AREA: 1 \ J?
220 SQ. FT. I i \
' Cp
i
LEGEND
NEUSE RIVER RIPARIAN BUFFER:
TEMPORARY NONE
WETLANDS IMPACTS
PERMANENT NEUSE RIVER RIPARIAN BUFFER:
ZONE 1 462 SF (0.011 AC)
ZONE 2 1MMIMMMI NONE
42 EABTREE CREEK N BANK MERGENCY REPORTH
ACEMENT III IMPACT EXHIBIT 3

\ \NRB
2 ?
OF
TAINS
PERMANENT STREAM IMPACTS:
L.F. 12 LF
AREA 52 SF (0.001 AC)
TEMPORARY STREAM IMPACTS:
L.F. 28 LF
AREA •::.:•; ; 174 SF (0.004 AC)
GRAPHIC SCALE
50 0 25 50 100
1 inrh - Sn ft
WITHERS &- RAVENEL
ENGINEERS 1 PLANNERS I SURVEYORS
EXISTING STREAM CROSSING

plp
.F
C?
F?
NEUSE RIVER RIPARIAN BUFFER:
/ ZONE 1 NRB
f ZONE 2 NRB,
I ?
I I
PERMANENT ZONE 1 BUFFER
IMPACT AREA:
402 SQ. FT.
OF RALEI H REG LARLY MAINTAINS
EXISTING14O WIDE EASEMENT
TEMPORARY
WETLANDS IMPACTS
NONE
PERMANENT STREAM IMPACTS:
L.F. 45 LF
AREA LLLUIL= 1,670 SF (0.038 AC)
g
g
PERMANENT NEUSE RIVER RIPARIAN BUFFER:
t\
ZONE 1 742 SF (0.017 AC)
ZONE 2 NONE GRAPHIC SCALE
50 0 25 50 100
1 inch = 50 ft.
CRABTREE CREEK NORTH BANK WITHERS &- RAVENEL
42" EMERGENCY REPLACEMENT IMPACT EXHIBIT 6 ENGINEERS 1 PLANNERS 1 SURVEYORS
11
PERMANENT ZONE 1 BUFFER
IMPACT AREA:
340 SQ. FT.
N
W E
s
Nognetic
LIMITS OF STREAM
PERMANENT IMPACTED AREA:
1,670 SQ. FT.
45 L.F.
M??Sti
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LEGEND