20031554 Ver 1_Complete File_20031207

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Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
Coleen H. Sullins, Deputy Director
Division of Water Quality
December 12, 2003
Guilford County
DWQ Project #: 03-1554
APPROVAL of 401 Water Quality Certification and AUTHORIZATION CERTIFICATE
City of High Point
211 South Hamilton Street, Post Office Box 230
High Point, NC 27261
Subject Property: Riverdale Road Landfill
You have our approval, in accordance with the attached conditions, to impact 0.02 acres of waters for a detention
pond, 25 feet perennial stream and 0.05 acres of buffers for the purpose of exploratory excavation as you
described in your application dated December 5, 2003. After reviewing your application, we have decided that
this fill is covered by General Water Quality Certification Number 3360, which may be viewed on our website at
http://h26.enr.state.nc.us/ncwetlands. This certification allows you to use Nationwide Permit Number 38 when
the Corps of Engineers issues it. In addition, you should get any other federal, state or local permits before you
go ahead with your project including (but not limited to) Sediment and Erosion Control, Coastal Stormwater,
Non-Discharge and Water Supply Watershed regulations. This approval will expire when the accompanying
404 or CAMA permit expires unless otherwise specified in the General Certification.
This approval is only valid for the purpose and design that you described in your application except as modified
below. If you change your project, you must notify us and you may be required to send us a new application. If
the property is sold, the new owner must be given a copy of this Certification and approval letter and is thereby .
responsible for complying with all conditions. If total wetland fills for this project (now or in the future) exceed
one acre, compensatory mitigation may be required as described in 15A NCAC 2H.0506 (h) (6) and (7). This
approval shall expire when the corresponding Nationwide Permit expires or as otherwise provided in the General
Certification. For this approval to be valid, you must follow the conditions listed in the attached certification and
any additional conditions listed below.
Conditions of Certification:
1. Upon completion of all work approved within the 401 Water Quality Certification or applicable Buffer
Rules, and any subsequent modifications, the applicant is required to return the attached certificate of
completion to the 401/Wetlands Unit, North Carolina Division of Water Quality, 1650 Mail Service
Center, Raleigh, NC, 27699-1650.
2. Erosion & Sediment Control Practices
Erosion and sediment control practices must be in full compliance with all specifications governing the
proper design, installation and operation and maintenance of such Best Management Practices in order
to protect surface waters standards:
a. The erosion and sediment control measures for the project must be designed, installed, operated,
and maintained in accordance with the most recent version of the North Carolina Sediment and
Erosion Control Planning and Design Manual.

N. C. Division of Water Quality, 401 Wetlands Certification Unit,
1650 Mail Service Center, Raleigh, NC 27699-1650 (Mailing Address)
2321 Crabtree Blvd., Raleigh, NC 27604-2260 (Location)
[phone] (phone), 919-733-6893 (fax), (http://h2o.enr.state.nc.us/newetlands
Page 2
City of High Point
December 12, 2003
b. The design, installation, operation, and maintenance of the sediment and erosion control measures
must be such that they equal, or exceed, the requirements specified in the most recent version of
the North Carolina Sediment and Erosion Control Manual. The devices shall be maintained on
all construction sites, borrow sites, and waste pile (spoil) projects, including contractor-owned or
leased borrow pits associated with the project.
c. For borrow pit sites, the erosion and sediment control measures must be designed, installed,
operated, and maintained in accordance with the most recent version of the North Carolina
Surface Mining Manual.
d. The reclamation measures and implementation must comply with the reclamation in accordance
with the requirements of the Sedimentation Pollution Control Act.
3. You must receive the appropriate local government approvals for any riparian buffer impacts (Water
Supply Watershed and Randleman Buffer).
4. The proposed project must comply with the City of High Point local water supply ordinance approved
by the N.C. Environmental Management Commission (EMC) as required under the Randleman Lake
Water Supply Watershed: Protection and Maintenance of Riparian Areas (Randleman Buffer Rule) 15A
NCAC 02B.0250.
5. If dewatering is required during this project, it is a condition of this certification that this activity must
be accomplished in a way that illegal discharges or violations of surface water standards do not occur.
Violations of any condition herein set forth may result in revocation of this Certification and may result in
criminal and/or civil penalties. This Certification shall become null and void unless the above conditions are
made conditions of the Federal 404 and/or coastal Area Management Act Permit.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing. You
must act within 60 days of the date that you receive this letter. To ask for a hearing, send a written petition,
which conforms to Chapter 150B of the North Carolina General Statutes to the Office of Administrative
Hearings, P.O. Box 27447, Raleigh, N.C. 27611-7447. This certification and its conditions are final and binding
unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water Act. If
you have any questions, please telephone John Dorney at 919-733-1786 or Daryl Lamb at our Winston-Salem
Regional Office at 336-771-4600.
JRD/bs
Attachments
?.E., irector
cc: Corps of Engineers Raleigh Field Office
Winston-Salem DWQ Regional Office
File copy
Central Files
Wendell Overby, S&EC, 236 Le Phillip Court, Suite C, Concord, NC 28025
4
Soil & Environmental
236 LePhillip Court, Suite C • Concord, North Carolina 28025
www.SandEC.com
Consultants, PA
Phone: [phone] • Fax: [phone]
December 5, 2003
S&EC #5-1201w1
US Army Corps of Engineers D - WQ
Raleigh Regulatory Field Office W
Attn: Andrea Wade a. N?- ._?ey WEDS 1401 GROUP
6508 Falls of Neuse Road, Suite 12(?ATL-- 321 Suite 250
Raleigh, NC 27615 Raleigh, NC 27604 DEC 0,9 2003
Dear Ms. Wade and Mr. Dorney:
C. -4
401 WATER QUALITY SECTION
The purpose of this letter is to request the use of Nationwide Permit 3 8 for proposed impacts to
waters of the US at the Riverdale Road Landfill in High Point, NC. The landfill is located west
of Interstate 85 north of Riverdale Road and is inactive. The approximate boundaries of the
landfill are shown on the attached USGS Topo Quad vicinity map, USDA Guilford County Soil
Survey, and Guilford County GIS map.. Surface waters on the property flow to Deep River
located very near the landfill. The property is in the Randleman Lake watershed. The purpose of
this preconstruction notification is outlined more clearly in a proposed scope of work included
with this submittal. Mr. Tom Wilson of Environmental Resources Management (ERM) prepared
the scope of work. ERM serves as the coordinator of the proposed work.
Impacts to waters of the US are proposed for exploratory purposes addressed in the scope of
work. Proposed impacts will occur on a small portion of the landfill. Specifically, the end of a
piped stream segment, small segment of stream and a portion of a sediment pond wetland will be
disturbed for remediation purposes. According to ERM, a pipe approximately 700 linear feet in
length conveys surface water under a portion section of the landfill. Based on historical
monitoring data the shallow ground water beneath the piped stream segment is affected by
volatile organic compounds associated with the landfill and the adjacent former Seaboard
Chemical Corporation facility. The NCDENR has indicated that the shallow affected ground
water beneath the piped stream segment should be remediated prior to discharge to streams for
prevention of water quality impacts. Exploratory excavation is proposed to locate, observe and
characterize conditions at the pipe outlet. The pipe outlet is not visible and is believed submerged
in the sediment pond wetland.
One potential form of remediation proposed by ERM involves installation of a ground water
collection trench. In order to evaluate the feasibility of such a collection system and prepare
designs the location and configuration of the pipe must be determined. In order to perform the
necessary evaluation of the pipe and surface water beneath the pipe, impacts to waters of the US
and riparian buffer will result.
Based on a wetland delineation performed by S&EC and descriptions/plans provided by ERM,
the proposed exploratory work is estimated to impact approximately 25 linear feet of channel,
1100 sf of wetlands and approximately 2550 sf of riparian buffer. Proposed impacts will occur at
one end of the sediment pond where the existing pipe reportedly discharges. Fortunately, an
existing road and path (approximately 10' wide) occur south of the wetland that can be followed
Greensboro Office: Hickory Area Office: Raleigh Office:
3817-E Lawndale Drive 710 Boston Road 11010 Raven Ridge Road
Greensboro, NC 27455 Taylorsville, NC 28681 Raleigh, NC 27614
Phone: [phone] Phone: [phone] Phone [phone]
Fax: [phone] Fax: [phone] Fax: [phone]
to the area in question. Photographs of the detention pond, road, and path are included with this
submittal. The existing road and path are currently used by city employees for water collection
and sampling. Impacts to wetlands and streams will occur in the form of excavation to locate the
pipe and evaluate conditions beneath the pipe. Impacts to the riparian buffer will result from
clearing of small trees and brush to access the buried pipe. We believe impacts to the buffer will
be minimal in nature based on the small vegetation that comprises the buffer and by use of the
existing road and path.
Attached please find: l) A completed Preconstruction Notification 2) proposed Scope of Work 3)
signed Agent Authorization Form, 4) USGS topo quad vicinity map, 5) Guilford County Soil
Survey map, 6) Guilford County GIS map, 7) Site Plans 8) Wetland data forms 9) A check for
$200 to cover 401 fees and 10) Site Photographs.
Sincerely,
GtI..G?.,GC'?
Wendell Overby
NC Licensed Soil Scientist
NC Registered Forester
Office Use Only' Form Version May 2002
USACE Action ID No. DWQ No.
(If any particular item is not applicable to this project, please enter "Not Applicable" or "N/A".)
1. Processing
1. Check all of the approval(s) requested for this project:
® 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: 38
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: City of High Point (c/o Perry Kairis)
Mailing Address: 211 South Hamilton Street
PO Box 230
High Point NC 27261
Telephone Number: 336.883.3215 Fax Number: 336.883.1675
E-mail Address:
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: Wendell Overby
Company Affiliation: Soil & Environmental Consultants PA
Mailing Address: 236 LePhillip Ct
Suite C
Concord NC 28025
Telephone Number: [phone] Fax Number: [phone]
E-mail Address: woverby&sandec.com
Page 5 of 12
M. 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: City of High Point Riverdale Drive Landfill
2. T.I.P. Project Number or State Project Number (NCDOT Only):
3. Property Identification Number (Tax PIN): 481-1-2
4. Location
County: Guilford Nearest Town: High Point
Subdivision name (include phase/lot number): N/A
Directions to site (include road numbers, landmarks, etc.): Business I-85 to Kivett Road
in High Point. Go 1 mile east on Kivett to Riverdale Road. Site is 1.25 miles
on left of Riverdale Road (across the street from Wastewater Treatment Plant).
5. Site coordinates, if available (UTM or Lat/Long):35°56'51.4"N. 79°54'27.12"W
(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): 150 (above Riverdale Road)
7. Nearest body of water (stream/river/sound/ocean/lake): DeW River
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 http://h2o.enr.state.nc.us/admin/mUs/.)
9. Describe the existing conditions on the site and general land use in the vicinity of the project
at the time of this application: Site is inactive landfill. Wastewater treatment plant is
adjoining _property. Low density residential areas nearby. 185 is also in close proximity
however no ramp exists for access from Riverdale Road.
Page 6 of 12
10. Describe the overall project in detail, including the type of equipment to be used:
Impacts to waters of the US are requested for exploratory excavation related to remediation
of volatile organic compounds entering Dew River. Contractors will use a trackhoe to
excavate sediment from the detention pond wetland to determine the location of the pipe and
characteristics of materials beneath the pipe in order to determine the feasibilit of
constructing a future collection trench.
11. Explain the purpose of the proposed work: See attached proposed scope of work. An
exploratory excavation is proposed to locate observe and characterize conditions at and
beneath the end of a piped stream segment in waters of the US. Investigators need to monitor
be able to monitor/sample water quality levels below the pipe as well as potentj4ft pump
water from under the pipe to created wetlands (in uplands) for phytoremediation efforts.
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.
No previous permit requests are known.
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.
Unknown at this time.
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
Page 7 of 12
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.
1. Provide a written description of the proposed impacts:Anproximately i 100 sf of impacts to
waters of the US estimated for excavation Impact includes approximately 25 if of Y-wide
stream channel.
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**
(yes/no) Distance to
Nearest Stream
(linear feet)
Type of Wetland***
1 Excavation .025 No 0 Detention pond

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: mechanized clearing, grading, fill,
excavation, flooding, ditchmg/dramage, etc. For dams, separately list impacts due to both structure and flooding.
** 100-Year floodplains 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 http://www.fema.gov.
*** 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: Unknown-for site
but delineation of detention pond area totals 12,700 sf.
Total area of wetland impact proposed: 1100 sqft (estimated)
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 Im act Perennial or
Intermittent?
lease specify)
1 Excavation 25 UT Deep River 3 Perennial

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: culverts 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.gov. Several internet sites also allow direct download and printing of USGS maps (e.g., www:tqpozone.com,
www.mapguest.com, etc.).
Cumulative impacts (linear distance in feet) to all streams on site: 25
4. Individually list all open water impacts (including lakes, ponds, estuaries, sounds, Atlantic
Ocean and any other water of the U.S.) below:
Page 8 of 12
Open Water Impact Area of Name of Waterbody Type of Waterbody
Site Number Type of Impact* Impact
(if applicable)` (lake, pond, estuary, sound,
(indicate on ma) (acres) bay, ocean, etc.)
N/A N/A 0 N/A N/A

* List each impact separately and identify temporary impacts. Impacts include, but are not limited to: fill, excavation, dredging,
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.): N/A
Proposed use or purpose of pond (e.g., livestock watering, irrigation, aesthetic, trout pond,
local stormwater requirement, etc.): N/A
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.
Proposed impacts will occur to one end of the detention pond. Impacts will be the minimum
necessary to locate the end of the pipe in question and characterize the area of concern. An
existing road and small path can be utilized to limit impacts to riparian buffer areas (see
attached). PROJECT JUSTIFICATION IS TO REMEDIATE TOXIC CHEMICALS FROM
ENTERING THE DEEP RIVER!
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.
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 minirnal. Factors
including size and type of proposed impact and function and relative value of the impacted
Page 9 of 12
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.html.
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.
Proposed impacts to wetlands and stream channels will be very small. We contend the
purpose of the work is a very important form of mitigation for the watershed. An existing
road and approx 10' wide grass/ gravel path can be used by the contractor (trackhoe) to access
the area of concern for excavation.
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 htt p //h2o enr state.nc.us/wrp/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): 0
Amount of buffer mitigation requested (square feet): 0
Amount of Riparian wetland mitigation requested (acres): 0
Amount of Non-riparian wetland mitigation requested (acres): 0
Amount of Coastal wetland mitigation requested (acres): 0
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?
Page 10 of 12
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 ?
YL 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* (sqImpact uare feet Multiplier Required
1 2200 3
2 350 1.5
Total 2550
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.
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 2B .0242 or .0260.
Annlicant reauest no buffer mitigation due to need for impacts. The entire landfill area appeared
vegetated with the exception of existing roads and structures.
Page 11 of 12
XL 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.
Project is an abandoned landfill. Very little impervious acreage however detention areas exist on
XH. 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.
No sewage disposal generated by project. Project is an abandoned landfill. Existing ewer
easements were identified in the field because the City of High Point (East) wastewater treatment
plant is located is close proximity.
XM. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H.0500) or any Buffer Rules?
Yes ? No
Is this an after-the-fact permit application?
Yes ? No
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).

Appli(int/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
12 ,f' 03
Page 12 of 12
Proposed Scope of Work
Exploratory Excavation of the SIS Pipe Outlet
Seaboard Chemical/Riverdale Drive Landfill Site
High Point, North Carolina
November 20, 2003
INTRODUCTION
A remedial investigation and monitoring activities have been conducted since 1996 at the
Seaboard Chemical/Riverdale Drive Landfill site located on Riverdale Drive in High
Point, North Carolina. The site investigation has been conducted under an
Administrative Order on Consent (AOC), dated June 30, 1996, with the North Carolina
Department of Environment and Natural Resources (NCDENR), Division of Waste
Management. The site consists of the former Seaboard Chemical Corporation (Seaboard)
facility and the City of High Point's Riverdale Drive Landfill (Landfill). The municipal
landfill portion of the Site was operated for approximately 40 years beginning in the
1950's and ending in 1993. Seaboard operated as a solvent recycling and fuel blending
facility from 1974 until 1989 when they declared bankruptcy.
Ground water monitoring data from wells at the Site indicate elevated levels of volatile
organic compounds. The volatile organic compounds in the ground water include:
tetrachloroethene, trichloroethene, 1,1-DCE, 1,2-DCA; chlorobenzene and 1,4-dioxane.
The former Riverdale Drive Landfill is constructed in part over the valley of a small
stream, the Southern Intermittent Stream (SIS). A 48-inch diameter concrete pipe,
installed on the former streambed of the SIS, conveys the surface water flow beneath the
landfill to the Deep River. The piped segment of the SIS is approximately 700 feet long.
The SIS pipe outlet is not visible and is reportedly submerged in a sediment basin located
between the landfill and the Deep River. Design drawings of the SIS pipe location are
not available.
Based on historical monitoring data, the shallow ground water beneath the piped segment
of the SIS is affected by volatile organic compounds (VOCs) and 1,4-dioxane which are
associated with the landfill and the adjacent former Seaboard Chemical Corporation site.
The NCDENR has indicated that the shallow affected ground water beneath the piped
segment of the SIS should be remediated prior to discharge to the streams at the pipe
outlets to prevent surface water quality impacts.
A potential remedial measure is to construct collection trenches at each pipe outlet to
intercept the shallow affected ground water beneath the pipe. In order to evaluate the
feasibility of a ground water collection trench and determine the design, additional
information is needed on the location and configuration of the SIS pipe outlet. An
exploratory excavation is proposed to locate, observe and characterize the conditions at
the SIS pipe outlet.
1 of 3
Following the clearing activities, the water that currently exists at the suspected SIS
outfall area will be pumped into the adjacent sediment basin. Removal of the water from
the outfall location will provide easier access and improved conditions for observing the
location of the SIS outfall pipe during the excavation activities.
Task 2 - Exploratory Excavation of SIS Pipe Outlet
Following the clearing and water pumping activities, the contractor will utilize a trackhoe
to excavate the suspected SIS outfall area to locate and evaluate the condition of the SIS
pipe outlet and gravel bedding beneath and around the SIS pipe. It is estimated that the
exploratory excavation will be less than 2,500 square feet in area and less than 10 feet in
depth. Excavated soils will be stockpiled on plastic on site for proper disposal.
Excavated waste materials (i.e. washed in trash), if encountered, will be placed in roll-off
containers for characterization, if necessary, and disposal. Once the SIS pipe outlet has
been located, the dimensions, depth and horizontal location of the SIS pipe will be
documented. Documentation will include a location map and cross-section of the SIS
pipe outlet and photographs of the exploratory excavation. Following completion of the
excavation activities, the disturbed areas will be backfilled with clean fill materials,
seeded and mulched. The excavation activities will be conducted in accordance with
applicable permit conditions.
For this excavation effort, it is presumed that sheet piling and shoring materials will not
be needed to stabilize the excavation in order to locate and make observations of the pipe
outlet. If conditions are encountered that require shoring, a modified scope of work
would be prepared.
SCHEDULE
It is estimated that the field activities can be completed in 1 to 2 days. The target
completion date for the field activities is December 15 subject to regulatory notification
and approval.
3 of 3
OBJECTIVES
The objectives of the proposed exploratory excavation at the SIS pipe outlet are :
• Determine the location of the SIS pipe outfall,
• Determine the configuration of the SIS pipe outfall including pipe size and
material, depth of pipe, amount and type of cover material above the pipe, amount
and type of pipe bedding material, and the depth to and nature of the native
material immediately below the pipe bedding,
• Characterize the general condition/integrity of the pipe outlet including the degree
of sedimentation inside the pipe outlet and general flow characteristics,
• Assess the site conditions to determine the feasibility of constructing a future
collection trench at the pipe outlet for the recovery of shallow affected ground
water beneath the pipe, and
• Minimize the area of disturbance by the excavation activities in the sediment
basin.
SCOPE OF WORK
A general description of the proposed field tasks for the exploratory excavation activities
for the SIS pipe is provided below.
Task I - Delineation of Wetlands and Regulatory Notification
Prior to conducting any clearing or excavation activities, the wetlands in the sediment
basin will be delineated and mapped by a qualified wetland scientist. The USACE and
NCDWQ will be contacted by the wetlands consultant to approve the delineation and
determine permit requirements and preconstruction notification, as applicable. It is
anticipated that the excavation project can be conducted under a Nationwide Permit 38.
Task I -Mobilization, Clearing & Dewatering forAccess
Upon regulatory notification, an excavation contractor will mobilize to the Site and clear
an access area for equipment to use during the location and excavation activities. Some
small trees and brush will be cleared adjacent to the presumed location of the SIS outfall
to provide an area for excavation equipment to access the SIS outfall location. The
materials removed from this area will be stockpiled and disposal will be coordinated with
the City of High Point. It is anticipated that the area to be cleared will be less than
approximately 2,500 square feet. Access and the available work area is limited by the
presence of the steep sidewall of the landfill, two concrete tanks associated with the
landfill leachate collection system, stormwater drainage pipes and the wetlands of the
sediment basin.
2 of 3
MOM SOILBENVtRtINr'?ENTALCONSULTANTS_ PAX No. : 7647209406
Concord, NoyU+ cwoina 26mi .
www.$w4w.com
Dec. 03 M03 09.33W P2
Consultants,
Phone; (704) 721`94113 - FIX- r744)
Name: City of Highoint n
Address: P.Q. Box 230
Phone: t336) 883-3215 r
Project Name/ Description: Excavation of SIS Pipe Outlet r
patp; December 3, 2003
The Department of the Army
U.S. Army Carps of Engineers, Wi. mington 1Disu t
P.O. Box 1890
Wilwk%ton, NC 284.42
Attn: Andrea Wade- .
Field Office: Raleigh _.
Re! Wetlmds Related Consulting and Peacnitt ng
To W 1WM It may Conemn:
I, the current proaW owrer, hereby designate and authori2e Soil & Envirorunental Consultants, Inc. to
act in my behalf as my agent In the processing of perwA apglicatiora, to humi,sh upon request
supplemental inf+or wtion in support of apph mdons, etc, from this day ftrrwYard. The rd day of
December; 2003
This notlAca.tic n sup3areedes any previous correspondence concerning the agent for Ods project.
NOTICE: This authorization, for liisbdility and pro£eseiomal courtesy reasons, is valid only for
govesMOn>t *ffiaials to cuter the prapertp when accompanied by S&EC staff. Your should call S&EC
to arrange a site meeMg prior to wlsitiing she site.
/ y t?litl -• --
I'&T opetty Owner's Name P per to 'S Sigat=e
ct: Mr, john Dorney cc: Mr. WertdeU Overby
NCDENR - DWQ Soil & Environsnexmtal Consultants, PA.
2321 Crabtree Blvd., Ste 250
Raleigh, NC 27604-2260
cmw them f){fiee_ ]Act= =a [??flat Fial?l?t [}tYF? .'
3817 ]c Lgwn4aalc Drive 622 Coen Mouyimin Lone r 1010 RevOq fWat RftJ
6reembore, NC 274,13 nylonAle, ?ETC 29681 Ralcigh. NC ?7614
fine' (3361540-6234 Phone: [phone] Phone (914) $46-5900
F4x, !3361 640-BZ35 MW [phone] p>LK: ()19) 8469467
Environmental
AGENT AUTHORIZATION FORM
All Blanks To Be Filled In By The Current Landowner
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is map is prepared for the inventory of real property found within this jurisdiction, and is compiled from recorded deeds, plats and other public
cards and data. Users of this map are hereby notified that the aforementioned public primary information sources should be consulted for
rification of the information contained on this map. The County assumes no legal responsibility for the information contained on this map. The
rrent date is: 12!4/2003 The data effective date is: August 1, 2001
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Wetland Delineation Performed By: Soil & Environmental Consultants, PA
236 LePhillip Ct., Suite C
Concord, North Carolina 28025
[phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Riverdale Road Landfill Date: 11/26/03
Applicant/Owner. City of High Point County: Guilford
Investigator: W. Overby State: NC
Do Normal Circumstances exist on the site? X Yes No Community ID: Sediment pond wetland
Is the site significantly disturbed (Atypical Situation)? Yes X No Transect ID:
Is the area a potential Problem Area? Yes X No Plot ID: wetland
(If needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Acer negundo Shrub FACW 9.
2. Salix nigra Shrub OBL 10.
3. Platanus occidentalis Tree FACW 11.
4. Carex spp. Herb FACW 12.
5. Murdannia keisak Herb OBL 13.
6. Liquidambarstyraciflua Shrub FAC 14.
7. 15.
8. 16.
Percent of Dominant Species that are OBL, FACW, or FAC
(excluding FAC-): 100
Remarks:
HYDROLOGY
Recorded Data (Describe in Remarks):
Stream, Lake or Tide Gauge
Aerial Photographs
Other
X No Recorded Data Available Wetland Hydrology Indicators:
Primary Indicators:
x Inundated
x Saturated in Upper 12 Inches
Sediment Deposits
x Drainage Patterns in Wetlands
Field Observations: Secondary Indicators (2 or more required):
x Oxidized Root Channels in Upper 12 Inches
Depth of Surface Water: 0-2 (in.) _ Water-Stained Leaves
Local Soil Survey Data
Depth to Free Water in Pit: 0-8 (in.) x FAC-Neutral Test
_ Other (Explain in Remarks)
Depth to Saturated Soil: 0 (in.)
Remarks:
Wetland Delineation Performed By: Soil & Environmental Consultants, PA
236 LePhillip Ct., Suite C
Concord, North Carolina 28025
[phone]
Project/Site: Riverdale Road Landfill Plot ID: wetland
?T.lliL-9
Map Unit Name Drainage Class: Poorly
(Series and Phase): Wehadkee Field Observations
Taxonomy (Subgroup): Fluvaquentic endoaquuept Confirm Mapped Type? Yes x No
Profile Description:
Depth Matrix Color Mottle Color Mottle Texture, Concretions,
inches Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
0-6 A 10YR 5/2 Loamy sand
6-15 Bg1 10YR 4/1 Loam
15+ Bg2 10YR 6/1 Sand clay loam
Hydric Soil Indicators:
Histosol Concretions
Histic Epipedon High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor Organic Streaking in Sandy Soils
x Aquic Moisture Regime x Listed on Local Hydric Soils List
x Reducing Conditions x Listed on National Hydric Soils List
x Gleyed or Low-Chroma Colors Other (Explain in Remarks)
Remarks: Soil type estimated as Wehadkee (poorly drained soil). Due to health concerns samples not taken for confirmation.
IL- 11
WETLANDS nFTFRMINATION
X
Hydrophytic Vegetation Present? _ Yes _ No Is this sampling point within a wetland?
Wetland Hydrology Present? x Yes _ No x Yes No
Hydric Soils Present? x Yes _ No
Remarks:
L- I
Wetland Delineation Performed By: Soil & Environmental Consultants, PA
236 LePhillip Ct., Suite C
Concord, North Carolina 28025
[phone]
DATA FORM
ROUTINE WETLAND DETERMINATION
(1987 COE Wetlands Delineation Manual)
Project/Site: Riverdale Road Landfill Date: 11/26/03
Applicant/Owner. City of High Point County: Guilford
Investigator: W. Overby State: NC
Do Normal Circumstances exist on the site? X Yes No Community ID: Early successional spp.
Is the site significantly disturbed (Atypical Situation)? Yes X No Transect ID:
Is the area a potential Problem Area? Yes X No Plot ID: Upland
(if needed, explain on reverse.)
VEGETATION
Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator
1. Pinus taeda Tree FAC 9.
2. Juniperus virginiana Shrub FACU- 10.
3. Quercus phellos Tree FACW- 11.
4. Rubus argutus Herb FACU 12.
5. Prunus serotina Shrub FACU 13.
6. Liquidambar styraciflua Shrub FAC 14.
7. Lonicera japonica Vine FAC- 15.
8. Andropogon virginicus Herb FAC- 16.
Percent of Dominant Species that are OBL, FACW, or FAC
(excluding FAC-): 25
Remarks: Upland areas are vegetated landfill. Mostly early successional species identified in the field.
HYDROLOGY
Recorded Data (Describe in Remarks):
Stream, Lake or Tide Gauge
Aerial Photographs
_ Other
X No Recorded Data Available Wetland Hydrology Indicators:
Primary Indicators:
Inundated
_ Saturated in Upper 12 Inches
Sediment Deposits
_ Drainage Patterns in Wetlands
Field Observations: Secondary Indicators (2 or more required):
_ Oxidized Root Channels in Upper 12 Inches
Depth of Surface Water: N/A (in.) Water-Stained Leaves
Local Soil Survey Data
Depth to Free Water in Pit: N/A (in.) FAC-Neutral Test
Other (Explain in Remarks)
Depth to Saturated Soil: N/A (in.)
Remarks:
Wetland Delineation Performed By: Soil & Environmental Consultants, PA
236 LePhillip Ct., Suite C
Concord, North Carolina 28025
[phone]
Project/Site: Riverdale Road Landfill Plot ID: upland
snu c
Map Unit Name Drainage Class: well
(Series and Phase): Wilkes Field Observations
Taxonomy (Subgroup): Typic Hapludalf Confirm Mapped Type? - Yes x No
Profile Description:
Depth Matrix Color Mottle Color Mottle Texture, Concretions,
inches Horizon (Munsell Moist) (Munsell Moist) Abundance/Contrast Structure, etc.
0-7 Ap 10YR 4/3 Sand loam
7-11 B 10YR 6/6 Sand loam
11-18 Bt1 10YR 5/6 Clay loam
18-26 C 10YR 5/8 Clay loam
Hydric Soil Indicators:
Histosol Concretions
Histic Epipedon High Organic Content in Surface Layer in Sandy Soils
Sulfidic Odor Organic Streaking in Sandy Soils
Aquic Moisture Regime Listed on Local Hydric Soils List
Reducing Conditions Listed on National Hydric Soils List
Gleyed or Low-Chroma Colors Other (Explain in Remarks)
Remarks: Soil type taken from Guilford County Soil Survey. Original soils disturbed due to landfill activities. No sampling of upland
soil performed due to unknown risks from landfill.
L-
I
WFTL_ANDS nFTFRMINATION
Hydrophytic Vegetation Present? Yes x No Is this sampling point within a wetland?
Wetland Hydrology Present? Yes x No Yes x No
Hydric Soils Present? Yes x No
Remarks:
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