20031539 Ver 1_Complete File_20031201

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STATE OF NORTH CAROLINA
DEPARTMENT OF TRANSPORTATION
MICHAEL F. EASLEY
GOVERNOR
Mr. John Thomas
November 25, 2003
U.S. Army Corps of Engineers
Regulatory Field Office
6508 Falls of the Neuse Road, Suite 105 0 1 ?`
Raleigh, North Carolina 27615
(Two Copies)
Ms. Beth Barnes
Wetlands/401 Unit
NC DENR Division of Water Quality
- br- ?-/
LYNDO TIPPETT
SECRETARY
Nos 140,E 001?
WEB
pEC ? .? 2003
WPB
1650 Mail Service Center
Raleigh, NC 27699
(Two copies) Courtesy Notification Written Authorization Not Required
SUBJECT: Birch Lane (SR 1172) Alamance County, replacement of two undersized pipes with
one larger pipe. State Project Number 7B.200111
To Whom It May Concern:
The North Carolina Department of Transportation (NCDOT) proposes to replace two undersized
pipes on Birch Road (SR 1172) in Alamance County near Alamance with one larger pipe. This
activity will result in impacts to UT to Big Alamance Creek. The NCDOT anticipates that the pipe
replacement activity will be authorized under Nationwide Permit (NWP) 3 and 33. This application
is intended as a request for written authorization from the US Army Corps of Engineers for the
Nationwides 3 and 33. This package is also being forwarded to the NC Division of Water Quality as
a courtesy notification as prescribed under General Water Quality Certification #3376 (NW 3) and
#3366 (NW 33). The following information is being provided to satisfy conditions of the
Nationwide Permits and General Water Quality Certifications.
1584 YANCEYVILLE STREET, GREENSBORO, NC 27415
PHONE [phone] FAX [phone]
PROJECT INFORMATION
Road Name SR Number Project Length
feet Classification
Birch Lane SR 1172 60 feet Rural
River Basin: DWQ
ID Water Quality
Designation % Impervious
Surface
Cape Fear 16-19-(4.5) C; NSW N/A
Buffer Rules' Buffer Rule Conditions where applicable)_
No N/A
Protected Species
Presentb Mapped Historic
Properties' CAMA
AEC Essential Fishery
Habitat
No No No No
° Separate documentation attached as needed: See the attached Endangered Species Review Sheet for further
information: ° When Applicable - See the attached Historic Review Letter for further information
PiPF. REPAIR INFORMATION
Site N/A Stream Perennial
Station Type

Repair Cofferdams Dewatering Sandbags
Method Device*
Burial One foot E/C Plan Attached
Depth
Construct- As soon as practicable Duration 15 days
ion Date
Impacts Temporary placement of approximately 20 sf of sandbags at the ends of
(ft.) existing pipes, 10 linear feet of new pipe and 20 linear feet of riprap for a total
of 30 linear feet of permanent impacts
Special None
Conditions
Restoration Within 15 working days of the of the pipe repair the natural stream contours
Plan will be restored and seeded. Temporary silt screens will be cleaned and
removed following vegetation establishment.
RCP = reinforced concrete pipe; CMP = Corrugated metal pipe; CMPA = Corrugated metal pipe arch; E/C =
Erosion control. *A less intrusive dewatering device may be used in lieu of the one proposed.
MINIMIZATION INFORMATION
-2-
Impacts will be minimized by strict enforcement of Best Management Practices for the protection of
surface waters and wetlands, restrictions against the staging of equipment in or adjacent to waters of
the US, and coordination (including a pre-construction meeting) with the Division Environmental
Officer.
MITIGATION INFORMATION
Stream mitigation is not anticipated, as the impacts to any individual stream do not exceed 150 feet
Wetland mitigation is not anticipated, as wetland impacts do not exceed 0.10 acres and do not occur
in a unique natural wetland.
APPLICATION INFORMATION
Enclosed please find the Pre-construction Notification Form and supporting documentation for the
above referenced project. If you have any questions or need any additional information, please
contact Dennis Johmson at [phone] or Jerry Parker at [phone]. Your time and
effort are appreciated.
Sincerely,
f
Mr. ,T'M. Mills, P.E.
? Division Engineer, Division 7
cc: Mr. Jerry Parker, Division Environmental Officer
Mr. C.N. Edwards, P.E., District 1 Engineer
Mr. Mike Venable, County Maintenance Engineer, Alamance
Mr.Barry Harrington, Area Roadside Field Operations Engineer
Mr. Dennis Johnson, Bridge Maintenance Supervisor
- 3 -
Office Use Only: Form Version May 2002
USACE Action ID No. DWQ NoO 31 5 J,,4
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
I. Processing
1. Check all of the approval(s) requested for this project:
X Section 404 Permit ? Riparian or Watershed Buffer Rules
? Section 10 Permit ? Isolated Wetland Permit from DWQ
® 401 Water Quality Certification
2. Nationwide, Regional or General Permit Number(s) Requested: NWP 3 and 33
3. If this notification is solely a courtesy copy because written approval for the 401 Certification
is not required, check here:
4. If payment into the North Carolina Wetlands Restoration Program (NCWRP) is proposed for
mitigation of impacts (verify availability with NCWRP prior to submittal of PCN), complete
section VIII and check here: ?
5. If your project is located in any of North Carolina's twenty coastal counties (listed on page
4), and the project is within a North Carolina Division of Coastal Management Area of
Environmental Concern (see the top of page 2 for further details), check here: ?
II. Applicant Information
Owner/Applicant Information
Name: Mr. J M Mills P E Division Engineer - Division 7
Mailing Address: P.O. Box 14996
Greensboro. NC 27415
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: [e-mail]
2. Agent/Consultant Information (A signed and dated copy of the Agent Authorization letter
must be attached if the Agent has signatory authority for the owner/applicant.)
Name: Jerry A Parker
Company Affiliation: NC DOT
Mailing Address: P.O. Box 14996
Greensboro NC 27415
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: jparker o dot state ne.us
Page 1 of 8
III. ]Project Information
Attach a vicinity map clearly showing the location of the property with respect to local
landmarks such as towns, rivers, and roads. Also provide a detailed site plan showing property
boundaries and development plans in relation to surrounding properties. Both the vicinity map
and site plan must include a scale and north arrow. The specific footprints of all buildings,
impervious surfaces, or other facilities must be included. If possible, the maps and plans should
include the appropriate USGS Topographic Quad Map and NRCS Soil Survey with the property
boundaries outlined. Plan drawings, or other maps may be included at the applicant's discretion,
so long as the property is clearly defined. For administrative and distribution purposes, the
USACE requires information to be submitted on sheets no larger than 11 by 17-inch format;
however, DWQ may accept paperwork of any size. DWQ prefers full-size construction
drawings rather than a sequential sheet version of the full-size plans. If full-size plans are
reduced to a small scale such that the final version is illegible, the applicant will be informed that
the project has been placed on hold until decipherable maps are provided.
1. Name of project: Replacement of two undersized pipes with one larger pipe.
2. T.I.P. Project Number or State Project Number (NCDOT Only): 7B.200111
3. Property Identification Number (Tax PIN): Not Applicable
4. Location
County: Alamance Nearest Town: Alamance
Subdivision name (include phase/lot number): Not Applicable
Directions to site (include road numbers, landmarks, etc.): Project site is south of Burlington
in Alamance County. From I-85/40 take Exit 143 (NC 62 exit) in Burlington and head south
on NC 62 for approx 3 miles Turn left on Birch Lane (SR 1172). Site is 0.1 miles after
turning onto Birch Lane.
5. Site coordinates, if available (UTM or Lat/Long): See the attached USGS MAP.
(Note - If project is linear, such as a road or utility line, attach a sheet that separately lists the
coordinates for each crossing of a distinct waterbody.)
6. Property size (acres): Not Applicable
7. Nearest body of water (stream/river/sound/ocean/lake): UT to Big Alamance Creek
8. River Basin: Cape Fear
(Note - this must be one of North Carolina's seventeen designated major river basins. The
River Basin map is available at httn'//h2o.enr state.nc.us/admin/maps/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Rural community and farmland
10. Describe the overall project in detail, including the type of equipment to be used:
Page 2 of 8
The project will involve replacing two pipes (50 ft long 36 inches) with one 60- ft long by
95" X 67" The increase in size of culvert has been recommended by the hydraulics section
of NCDOT in order to maintain stream stability and to eliminate flooding Proposed rip-
ht-of-way width is illustrated on the attached site plan. Equipment used will be standard road
construction equipment (trackhoe grader, backhoe and bulldozer).
11. Explain the purpose of the proposed work: To maintain traffic safety, eliminate flooding
and reduce future naintenance costs.
IV. Prior Project History
If jurisdictional determinations and/or permits have been requested and/or obtained for this
project (including all prior phases of the same subdivision) in the past, please explain. Include
the USACE Action ID Number, DWQ Project Number, application date, and date permits and
certifications were issued or withdrawn. Provide photocopies of previously issued permits,
certifications or other useful information. Describe previously approved wetland, stream and
buffer impacts, along with associated mitigation (where applicable). If this is a NCDOT project,
list and describe permits issued for prior segments of the same T.I.P. project, along with
construction schedules.
Not Applicable
V. Future Project Plans
Are any future permit requests anticipated for this project? If so, describe the anticipated work,
and provide justification for the exclusion of this work from the current application.
Not Applicable
VI. Proposed Impacts to Waters of the United States/Waters of the State
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
wetlands, open water, and stream channels associated with the project. The applicant must also
provide justification for these impacts in Section VII below. All proposed impacts, permanent
and temporary, must be listed herein, and must be clearly identifiable on an accompanying site
plan. All wetlands and waters, and all streams (intermittent and perennial) must be shown on a
delineation map, whether or not impacts are proposed to these systems. Wetland and stream
evaluation and delineation forms should be included as appropriate. Photographs may be
included at the applicant's discretion. If this proposed impact is strictly for wetland or stream
mitigation, list and describe the impact in Section VIII below. If additional space is needed for
listing or description, please attach a separate sheet.
Page 3 of 8
1. Provide a written description of the proposed impacts: Permanent stream impacts will
result from ten additional feet of channel enclosure and placement of 20 linear feet of rip-rap
energy dissipaters Te=orM stream impacts will result from placement of cofferdams and
siltscreens Silt screens will be cleaned and removed following vegetation establishment.
2. Individually list wetland impacts below:
Wetland Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Located within
100-year Floodplain**
es/no Distance to
Nearest Stream
linear feet
Type of Wetland***
N/A

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditching/drainage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodpWns are identified through the Federal Emergency Management Agency's (FEMA) Flood Insurance Rate Maps
(FIRM), or FEMA-approved local floodplain maps. Maps are available through the FEMA Map Service Center at 1-800-358-9616, or
online at bn://www. fenta. aov.
*** List a wetland type that best describes wetland to be impacted (e.g., freshwater/saltwater marsh, forested wetland, beaver pond,
Carolina Bay, bog, etc.) Indicate if wetland is isolated (determination of isolation to be made by USACE only).
List the total acreage (estimated) of all existing wetlands on the property: Not Applicable
Total area of wetland impact proposed: Not Applicable
3. Individually list all intermittent and perennial stream impacts below:
Stream Impact
Site Number
indicate on ma
Type of Impact* Length of
Impact
linear feet
Stream Name** Average Width
of Stream
Before Impact Perennial or
Intermittent?
leasespecify)

Pipe replacement 10 ft(en)
20 sf(tmp)
20ftr UT to Big Alamance
Creek Three to six
feet
Perennial

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: cmverts and associated np-rap,
dams (separately list impacts due to both structure and flooding), relocation (include linear feet before and after, and net loss/gain),
stabilization activities (cement wall, rip-rap, crib wall, gabions, etc.), excavation, ditching/straightening, etc. If stream relocation is
proposed, plans and profiles showing the linear footprint for both the original and relocated streams must be included.
** Stream names can be found on USGS topographic maps. If a stream has no name, list as UT (unnamed tributary) to the nearest
downstream named stream into which it flows. USGS maps are available through the USGS at 1-800-358-9616, or online at
www.usgs.pov. Several internet sites also allow direct download and printing of USGS maps (e.g., www.topozone.com,
www.maj2quest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 10 linear feet- enclosure
20 square feet- temporary (tmp) 20 linear ft- rip rap (rp)
Page 4 of 8
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Open Water Impact
Site Number
indicate on ma
Type of Impact* Area of
Impact
acres Name of
(if applicable) Waterbody Type of Waterbody
lake, pond, estuary, sound,
bay. ocean, etc.
N/A

List each impact separately and identify temporary impacts. impacts include, out are not limited tu: uu, excava«ou, weUgHir,
flooding, drainage, bulkheads, etc.
5. Pond Creation
If construction of a pond is proposed, associated wetland and stream impacts should be
included above in the wetland and stream impact sections. Also, the proposed pond should
be described here and illustrated on any maps included with this application.
Pond to be created in (check all that apply): ? uplands ? stream ? wetlands
Describe the method of construction (e.g., dam/embankment, excavation, installation of
draw-down valve or spillway, etc.): Not Applicable
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): Not Applicable
Size of watershed draining to pond: N/A Expected pond surface area: N/A
VII. Impact Justification (Avoidance and Minimization)
Specifically describe measures taken to avoid the proposed impacts. It may be useful to provide
information related to site constraints such as topography, building ordinances, accessibility, and
financial viability of the project. The applicant may attach drawings of alternative, lower-impact
site layouts, and explain why these design options were not feasible. Also discuss how impacts
were minimized once the desired site plan was developed. If applicable, discuss construction
techniques to be followed during construction to reduce impacts.
Pipe replacement activities are necessary to bring the project up to current construction standards
and to decrease the possibility of flooding due to the undersized pipes. Impacts will be
minimized by strict enforcement of Best Management Practices for the protection of wetland and
surface waters restrictions against the staging of equipment in or adjacent to waters of the US,
and coordination (including a pre-construction meeting) with the Division Environmental
Officer.
VIII. Mitigation
DWQ - In accordance with 15A NCAC 2H .0500, mitigation may be required by the NC
Division of Water Quality for projects involving greater than or equal to one acre of impacts to
freshwater wetlands or greater than or equal to 150 linear feet of total impacts to perennial
streams.
Page 5 of 8
USACE - In accordance with the Final Notice of Issuance and Modification of Nationwide
Permits, published in the Federal Register on March 9, 2000, mitigation will be required when
necessary to ensure that adverse effects to the aquatic environment are minimal. Factors
including size and type of proposed impact and function and relative value of the impacted
aquatic resource will be considered in determining acceptability of appropriate and practicable
mitigation as proposed. Examples of mitigation that may be appropriate and practicable include,
but are not limited to: reducing the size of the project; establishing and maintaining wetland
and/or upland vegetated buffers to protect open waters such as streams; and replacing losses of
aquatic resource functions and values by creating, restoring, enhancing, or preserving similar
functions and values, preferable in the same watershed.
If mitigation is required for this project, a copy of the mitigation plan must be attached in order
for USACE or DWQ to consider the application complete for processing. Any application
lacking a required mitigation plan or NCWRP concurrence shall be placed on hold as
incomplete. An applicant may also choose to review the current guidelines for stream restoration
in DWQ's Draft Technical Guide for Stream Work in North Carolina, available at
http://h2o,enr.state.nc.us/ncwetlands/strmgide.litml.
Provide a brief description of the proposed mitigation plan. The description should provide
as much information as possible, including, but not limited to: site location (attach directions
and/or map, if offsite), affected stream and river basin, type and amount (acreage/linear feet)
of mitigation proposed (restoration, enhancement, creation, or preservation), a plan view,
preservation mechanism (e.g., deed restrictions, conservation easement, etc.), and a
description of the current site conditions and proposed method of construction. Please attach
a separate sheet if more space is needed.
A finding of insignificant impact is anticipated, therefore a mitigation plan is not provided.
Cumulative impacts are less than 150 feet The maximum amount of impact to a single
stream is linear feet No Outstanding Resource Waters federally protected species or their
habitats or essential fishery habitats occur in the project area The project is not located in a
High Quality Water.
2. Mitigation may also be made by payment into the North Carolina Wetlands Restoration
Program (NCWRP). Please note it is the applicant's responsibility to contact the NCWRP at
[phone] to determine availability and to request written approval of mitigation prior
to submittal of a PCN. For additional information regarding the application process for the
NCWRP, check the NCWRP website at http://h2o.enr.state.nc.us/wr2/index.htm. If use of
the NCWRP is proposed, please check the appropriate box on page three and provide the
following information:
Amount of stream mitigation requested (linear feet): Not Applicable
Amount of buffer mitigation requested (square feet): Not Applicable
Amount of Riparian wetland mitigation requested (acres): Not Applicable
Amount of Non-riparian wetland mitigation requested (acres): Not Applicable
Amount of Coastal wetland mitigation requested (acres): Not Applicable
Page 6 of 8
IX. Environmental Documentation (required by DWQ)
Does the project involve an expenditure of public (federal/state) funds or the use of public
(federal/state) land?
Yes ® No ?
If yes, does the project require preparation of an environmental document pursuant to the
requirements of the National or North Carolina Environmental Policy Act (NEPA/SEPA)?
Note: If you are not sure whether a NEPA/SEPA document is required, call the SEPA
coordinator at [phone] to review current thresholds for environmental documentation.
Yes ? No
If yes, has the document review been finalized by the State Clearinghouse? If so, please attach a
copy of the NEPA or SEPA final approval letter.
Yes ? No
X. Proposed Impacts on Riparian and Watershed Buffers (required by DWQ)
It is the applicant's (or agent's) responsibility to determine, delineate and map all impacts to
required state and local buffers associated with the project. The applicant must also provide
justification for these impacts in Section VII above. All proposed impacts must be listed herein,
and must be clearly identifiable on the accompanying site plan. All buffers must be shown on a
map, whether or not impacts are proposed to the buffers. Correspondence from the DWQ
Regional Office may be included as appropriate. Photographs may also be included at the
applicant's discretion.
Will the project impact protected riparian buffers identified within 15A NCAC 2B .0233
(Meuse), 15A NCAC 2B .0259 (Tar-Pamlico), 15A NCAC 2B .0250 (Randleman Rules and
Water Supply Buffer Requirements), or other (please identify )?
Yes ? No ® If you answered "yes", provide the following information:
Identify the square feet and acreage of impact to each zone of the riparian buffers. If buffer
mitigation is required calculate the required amount of mitigation by applying the buffer
multipliers.
Zone* Impact
(square feet Multiplier Required
Mitigation
1 N/A 3
2 N/A 1.5
Total N/A
* Zone 1 extends out 30 feet perpendicular from near bank of channel; "Zone 2 extends an
additional 20 feet from the edge of Zone 1.
Page 7 of 8
If buffer mitigation is required, please discuss what type of mitigation is proposed (i.e., Donation
of Property, Conservation Easement, Riparian Buffer Restoration / Enhancement, Preservation or
Payment into the Riparian Buffer Restoration Fund). Please attach all appropriate information as
identified within 15A NCAC 213 .0242 or.0260.
Not AMlicable
XI. Stormwater (required by DWQ)
Describe impervious acreage (both existing and proposed) versus total acreage on the site.
Discuss stormwater controls proposed in order to protect surface waters and wetlands
downstream from the property.
Not Applicable
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
Not Applicable
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes_ No X
Is this an after-the-fact permit application?
Yes No X
XIV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
// -2,5?- Ck5
t/Agent's Signature Date
e is valid only if an authorization letter from the applicant is provided.)
Page 8 of 8

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N.C. D.O.T.
BRIDGE MAINT. DEPT.
EROSION CONTROL SEQUENCE
ALAMANCE CO. 336 570 6818
SR 1172
BRIeH LANE
n/Pull
PIPE No. N/A
PROJECT
No.
713.200111
DESCRIPTION: REMOVAL OF EXISTING PIPE STRUCTURE 2@ 36" CONCRETE PIPE & REPLACE WITH
NEW CMPA PIPE STRUCTURE 1 @ 95" x 67" x 60' LONG
1 DAM BOTH ENDS OF STREAM WITH ABC AGGREGATE (underlain & wrapped with
Filter Fabric) or LESS INTRUSIVE DEVICE to ALLOW DEWATERING of WORK AREA
2 INSTALL PUMPS to DIVERT FLOW AROUND WORK AREA
PUMP CLEAN WATER AROUND WORK AREA
3 EXCAVATE SITE TO REMOVE EXISTING PIPE & EXCAVATE AREA FOR NEW PIPE
4 DEWATER WORK AREA-PUMP WATER INTO DIRT BAG
5 EXCAVATE to SUFFICIENT DEPTH to ALLOW BURIAL of the PIPE to 1 foot BELOW
STREAMBED PLACE BASE STONE & SECTIONS of 95" X 67"X 60' long CM PIPE
6 INSTALL SILT FENCE AS SITE CONDITION REQUIRE
7 BACKFILL PIPE AND SHOULDER AREA
8 PLACE FILTER FABRIC AROUND PIPE & SLOPE AREA THEN RIP RAP
KEEPING RIP RAP OUT of STREAM
9 REMOVE BOTH DAMS of ABC AGGREGATE or LESS INTRUSIVE DEWATERING
DEVICE to ALLOW NORMAL STREAM FLOW
10 RESEED AREA AS NEEDED
APPROXIMATE PROJECT START DATE N//A
PREPARED BY J.L CORNELL TRANSPORTATION SUPV. DATE 9/19/2003
APPROVAL DIV. BRIDGE ENG. ?)/ U, - DATE q IS -O3
jcornell
ALAMANCE CO.
SR 1172
-BBfUCITILAN E
(3 /Rctt
PIPE No. N/A
SEQUENCE1
1 DAM BOTH ENDS OF STREAM WITH ABC AGGREGATE (underlain & wrapped with
Filter Fabric) or LESS INTRUSIVE DEVICE to ALLOW DEWATERING of WORK AREA
2 INSTALL PUMPS to DIVERT FLOW AROUND WORK AREA
PUMP CLEAN WATER AROUND WORK AREA
3 EXCAVATE SITE TO REMOVE EXISTING PIPE & EXCAVATE AREA FOR NEW PIPE
4 DEWATER WORK AREA PUMP & WATER INTO SILT BAG
5 EXCAVATE to SUFFICIENT DEPTH to ALLOW BURIAL of the PIPE to 1 foot BELOW
STREAMBED PLACE BASE STONE & SECTIONS of 95" X 67" X 60' long CM PIPE
6 INSTALL SILT FENCE AS SITE CONDITION REQUIRE
SILT FENCE
AS NEEDED
"* ED I
PIPE 1

SR 1172
?ILT FENCE
AS NEEDED
STREAM FLOW
SLIT BAG
I ? V-1,
SILT FENCE
AS NEEDED
0
\ABC AGGREGATE
(underlain & wrapped with Filter Fabric)
ILT FENCE
AS NEEDED
SR 1172 ? sandbags
0 0. {? c rip rap
00b
trees
jcornell
ALAMANCE CO.
SR 1172
PIPE No
N/A
SEQUENCE2
7 BACKFILL PIPE AND SHOULDER AREA
8 PLACE FILTER FABRIC AROUND PIPE & SLOPE AREA THEN RIP RAP
KEEPING RIP RAP OUT of STREAM
9 REMOVE BOTH DAMS of ABC AGGREGATE or LESS INTRUSIVE DEWATERING
DEVICE to ALLOW NORMAL STREAM FLOW
10 RESEED ARED AS NEEDED
SILT FENCE ???
AS NEEDED
SR 1172
4----'SILT FENCE
AS NEEDED
SILT FENCE ---?
AS NEEDED
?a
PIPE 1
I STREAM FLOW
\ FILTER FABRIC
UNDER RIP RAP
4------SILT FENCE
SR 1172
AREA TO BE SEEDED
BY BRIDGE MAINT
009 rip rap
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Downstream view from Birch Road (SR 1172)
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downstream at inlet pipes
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