9001_UnionCountyCDLFontop_PermitApp_increase capacity__FID1426641_20200721

July 21, 2020

Mr. Ming-tai Chao
Environmental Engineer
North Carolina Department of Environmental Quality
Permitting Branch, Solid Waste Section
1646 Mail Service Center
Raleigh, NC 27699-1646

Dear Ming:

Subject: Permit # 9001-CDLF-1998 Union County C&D Landfill (DIN 20697)

On behalf of Union County, Civil & Environmental Consultants, Inc. (CEC) respectfully submits
this Permit Modification for the Union County CDLF unit on top of the closed unlined MSWLF,
Permit # 9001-CDLF-1998. Included in this application is a summary of the permit
modifications, revised operations plan, calculations and permit modification drawings.

Specifically, the permit modification is related to the final closure grades and stormwater
features. Previously permitted final closure stormwater downchutes and existing Sediment Basin
SB-1 have been modified as part of this permit modification application. The proposed revisions
associated with this permit modification will increase the capacity for the C&D landfill to
1,832,800 yd3. The resulting additional capacity is 159,000 yd3, a 9.5% increase in capacity from
the permitted C&D Landfill Area combined capacity (1,673,800 yd3).

It is understood that changes to the items above may result in additional application fees.

Should you have any questions or concerns, please contact Nathan at [phone] or at
[e-mail].

Sincerely,

CIVIL & ENVIRONMENTAL CONSULTANTS, INC.

Nathan Bivins, PE Scott L. Brown, PE
Project Manager Vice President

MINOR MODIFICATION

UNION COUNTY C&D LANDFILL
PERMIT NO. 90-01--CDLF

Prepared For:
UNION COUNTY PUBLIC WORKS
WINGATE, NC

Prepared By:
CIVIL & ENVIRONMENTAL CONSULTANTS, INC.
CHARLOTTE, NORTH CAROLINA

CEC Project 151-797
JULY 2019
REVISED 2020

July 2020
North Carolina Board of Examiners
For
Engineers and Surveyors
License No. C-3035

-i- Union County Landfill Facility Plan
July 2020
TABLE OF CONTENTS
1.0 GENERAL INFORMATION ...........................................................................................1
1.1 PROJECT DESCRIPTION ..................................................................................... 1
1.2 COMPLIANCE WITH STATE AND COUNTY SOLID WASTE
MANAGEMENT PLANS ...................................................................................... 3
2.0 FACILITY PLAN ..............................................................................................................4
2.1 FACILITY DRAWINGS ........................................................................................ 4
2.2 FACILITY COMPLIANCE ................................................................................... 4
2.3 WASTE STREAM.................................................................................................. 4
2.4 LANDFILL CAPACITY ........................................................................................ 4

-ii- Union County Landfill Facility Plan
July 2020
Table of Contents (Continued)
Page ii

ATTACHMENTS

Appendix A – Operations Plan
Appendix B – Drawings
Appendix C – Engineering Calculations
Appendix D – Franchise Information

- 1 - Union County Landfill Facility Plan
July 2020

1.0 GENERAL INFORMATION

1.1 PROJECT DESCRIPTION

This Facility Plan and other updated information contained in this Permit Modification
represents an update to the Union County facility Permit Renewal Application by Civil &
Environmental Consultants, Inc. 2019. The entire existing Permit to Construct Application
should be kept on file, including this plan, at the site.

The Union County Construction & Demolition (C&D) Landfill is located at 2125 Austin Chaney
Road near Wingate. C&D Landfills dispose of solid waste generated from the construction,
remodeling, repair or demolition of buildings, structures and roads. The current site has been
operated by Union County since 1972. Prior to December 31, 1997 municipal solid waste
(garbage) was disposed of on site. Since January 1, 1998 only C&D waste is disposed of on site.
There are currently no plans to change operating procedures or schedules. Figure 1 shows the
Facility in relation to waterbodies, adjacent properties, and other features.

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July 2020

Figure 1- Site Plan

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July 2020

The Facility is permitted to operate as a construction and demolition (C&D) landfill in
accordance with North Carolina Department of Environment Quality (NCDEQ), Division of
Waste Management Permit Number 90-01. The facility is also permitted as a Large Type 1
Solid waste Compost and Reprocessing Facility Permit Number 90-05T.

Union County owns a total of 175.2 acres of which 26.5 are designated for the disposal of C&D
waste. In addition to C&D disposal, Union County owns and operates a municipal solid waste
transfer station and hosts multiple recycling programs adjacent to the C&D disposal area.

1.2 COMPLIANCE WITH STATE AND COUNTY SOLID WASTE MANAGEMENT
PLANS

The Facility is being developed in compliance with the North Carolina Department of
Environmental Quality (NCDEQ). The State Waste Policy and Management Act required
NCDEQ to develop a state solid waste management plan. NCDEQ requires that a solid waste
management facility permit to have two parts: Permit to Construct, and Permit to Operate and be
in accordance with North Carolina Solid Waste Management Rules 15A NCAC 13B .0201 (c)
and (d) and Rule 15A NCAC 13B .0534 (b) (2). Operation and maintenance of the Solid Waste
Compost and Reprocessing Facility is in accordance with Solid Waste Compost Rules 15A
NCAC 13B, Section .1401.

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July 2020

2.0 FACILITY PLAN

2.1 FACILITY DRAWINGS

Approved Drawings from the Minor Permit Modification can be found in Appendix B.

2.2 FACILITY COMPLIANCE

The following is a discussion of the characteristics of the waste received at the facility, an
analysis of landfill capacity and soil resources, and special engineering features consistent with
Subparagraph (e)(1-2) of 15A NCAC 13B.

2.3 WASTE STREAM

Waste that is generated from the construction, remolding, repair, or demolition operation on
pavement and buildings or structures will be accepted. The waste acceptance rate projected for
this facility is approximately 35,000 tons per year. The average monthly disposal rate over the
past five years is approximately 2,000 tons per month, with the waste stream increasing
significantly over the past two years to approximately 2,900 tons per month. The estimated
disposal rate may vary due to population, industrial, and commercial growth within the region,
recycling efforts, or availability of other landfills. Equipment and staffing recommendations in
this manual are based on these disposal rates and are subject to change in the event of future
modification to waste acceptance rates at the Facility. Waste segregation procedures are
presented in the Operations Plan, Appendix A. The Facility will be operated with equipment
owned by the landfill owner. At minimum, equipment will consist of a dozer, compactor, track
hoe, and a water truck.

2.4 LANDFILL CAPACITY

The currently Permitted Gross Capacity and acreages are shown in the table below:

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July 2020

Table 1-1 – Gross Capacity and Acreages
C&D Unit Acreage (acres)
Permitted Gross
Capacity (cubic
yards)
Status
First Unit 5.7 327,000 Closed
Cell 1A & Partial Cell 1 4.1 154,900 Closed
Cell 1 2.1 142,400 Operational
Cell 2 2.8 163,200 Operational
Cell 3 1.0 49,700 Operational
Cell 4 2.0 161,800 Operational
Cell 5 2.1 140,000 Operational
Cell 6 2.7 148,100 Future
Cell 7 2.0 258,600 Operational
Cell 8 2.0 128,100 Operational
Total for Facility 26.5 1,673,800

Union County utilized approximately 1,201,358 cubic yards (CY) of airspace since it began
operations. CEC estimates 412,556 CY of waste airspace, not including the final cover system,
remain in the C&D landfill as of July 2019. For the C&D landfill, using the historical in-place
waste density of 1,166 lbs/CY (0.58 tons/CY), the landfill has approximately 240,619 tons of
waste capacity remaining. At the disposal rate for the 2018-2019 year of 45,586 tons per year,
approximately 5.3 years of life remain in the C&D landfill. The remaining time for the landfill
operations is proportional to incoming waste stream and in-place waste density. If the incoming
C&D waste stream remains consistent in volume and waste type, the life of the landfill increases
with increasing in-place waste density.

The proposed final closure grade modifications to the C&D Landfill area will result in additional
capacity for the phases. The combined permitted capacity for C&D Landfill is 1,673,800 cubic
yards (cy). The proposed revisions associated with this permit modification will increase the
capacity for the C&D Landfill to 1,832,800 cy. The resulting additional capacity is 159,000 cy, a
9.5% increase in capacity. This information is summarized in the table below:

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July 2020

Table 1-2 – Proposed Capacity Modification
Area
Permitted
Capacity (cy)
Proposed Additional
Capacity (cy)
Proposed
Capacity (cy)
Proposed
Increase in
Capacity
C&D Landfill 1,673,800 159,000 1,832,800 9.5%

Due to population, industrial, and commercial growth within the region, recycling efforts, or
availability of other landfills, disposal rates and in-place waste density may vary.

APPENDIX A
OPERATIONS AND MAINTENANCE PLAN

OPERATIONS PLAN

UNION COUNTY C&D LANDFILL
PERMIT NO. 90-01--CDLF

Prepared For:
UNION COUNTY PUBLIC WORKS
MONROE, NC

Prepared By:
CIVIL & ENVIRONMENTAL CONSULTANTS, INC.
CHARLOTTE, NORTH CAROLINA

CEC Project 151-797
JULY 2019
Revised May 2020

July 2020
North Carolina Board of Examiners
For
Engineers and Surveyors
License No. C-3035

-i- Union County Landfill Operation Plan
July 2020
TABLE OF CONTENTS
1.0 INTRODUCTION..............................................................................................................1
1.1 PURPOSE ............................................................................................................... 1
1.2 REFERENCE DOCUMENTS ................................................................................ 2
1.3 REGULATIONS..................................................................................................... 3
1.4 LOCATION ............................................................................................................ 3
2.0 OPERATIONAL DRAWINGS ........................................................................................4
3.0 WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS ..................................5
3.1 ASBESTOS WASTE .............................................................................................. 5
3.2 WASTE EXCLUSIONS ......................................................................................... 6
3.3 RECYCLING ........................................................................................................ 15
3.4 WASTE SCREENING ......................................................................................... 16
3.5 COVER, SPREADING, AND COMPACTING .................................................. 18
3.6 SURVEY CONTROL ........................................................................................... 18
3.7 AIR CRITERIA AND FIRE CONTROL ............................................................. 19
3.8 ACCESS AND SAFETY ...................................................................................... 20
3.9 EROSION AND SEDIMENTATION CONTROL .............................................. 21
3.10 DRAINAGE CONTROL AND WATER PROTECTION ................................... 22
3.11 DISEASE AND VECTOR Control & DUST CONTROL ................................... 23
3.12 OPERATING RECORD AND RECORDKEEPING ........................................... 24
4.0 FACILITY COMPOSTING ...........................................................................................26
4.1 COMPOSTING OPERATIONS LOCATION ..................................................... 27
4.2 WASTE ACCEPTANCE AND QUANTITY ...................................................... 27
4.3 COMPOSTING PROCESS .................................................................................. 28
4.4 STORMWATER COLLECTION AND CONVEYANCE .................................. 29
4.5 ENVIRONMENTAL MONITORING ................................................................. 30
4.6 MAINTENANCE ................................................................................................. 30
4.7 CONTINGENCY FOR COMPOSTING OPERATIONS .................................... 30
4.8 COMPOST UNIT CLOSURE REQUIREMENTS .............................................. 33
4.9 RECORD KEEPING AND REPORTING REQUIREMENTS ........................... 33

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July 2020
Table of Contents (Continued)
Page ii

ATTACHMENTS

Attachment 1 – Random Load Inspection Form
Attachment 2 – Contact Information

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July 2020

1.0 INTRODUCTION

This document is the Operations Plan for the Union County C&D landfill facility (Facility),
located in Union County, North Carolina. The Plan serves as a guide to the landfill operator with
respect to routine landfill operations, environmental monitoring, and record-keeping. The
Facility is permitted to operate as a construction and demolition (C&D) landfill in accordance
with North Carolina Department of Environmental Quality (NCDEQ), Division of Waste
Management Permit Number 90-01. The facility is also permitted as a Large Type 1 Solid waste
Compost and Reprocessing Facility Permit Number 9015-COMPOST-2020. The Facility is
expected to have an approximate operational waste acceptance rate of 35,000 tons per year.
Equipment and staffing recommendations in this manual are based on these disposal rates and
are subject to change in the event of future modification to waste acceptance rates at the Facility.

1.1 PURPOSE

The Operations Plan is intended to serve as a site reference. Every employee should be
acquainted with its contents and location at the site. Each section of this plan is self-contained,
easily updated, and may be used in the field, for training sessions, or self-instruction.

The operations manual addressed the following topics:
· Personnel requirements;
· Entrance procedures and recordkeeping;
· Incoming vehicle inspection;
· Traffic control;
· Landfilling operations;
· Recycling operations;
· Equipment requirements;
· Operation and maintenance of environmental controls;
· Contingency and emergency procedures; and
· Safety practices and plan implementation.

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This Operations Plan has been prepared in accordance with North Carolina Administrative Code
(NCAC) Title 15A Section 13B .0542. Furthermore, the plan is based on engineering judgment
and reflects generally accepted solid waste landfilling techniques.

1.2 REFERENCE DOCUMENTS

This Operations Plan constitutes a portion of the Union County facility Permit to Construct
Application prepared by S&ME, Incorporated dated 2008. The entire Permit to Construct
Application should be kept on file, including this plan, at the site. Other documents pertinent to
facility operations and site development include:

1. Union County, North Carolina Construction and Demolition Landfill Facility Permit
Submittal Document, Site and Construction Transition Plan modification application for
Operation of a Construction and Demolition Landfill. Prepared by: Union County, March
16, 1998.
2. Letter: Survey Generated Contour of the Proposed C&D Site. Prepared by: Union
County, March 20, 1998.
3. Union County Landfill Closure Report- Addendum. Prepared by S&ME, Incorporated,
May 22, 1998.
4. Construction Certification Report Union County Construction and Demolition (C&D)
Landfill. Prepared by: S&ME, Incorporated, July 16, 2001.
5. Permit Modification for Inclusion of 2-Acre C&D Landfill Expansion. Prepared by
S&ME, Incorporated, July 16, 2003.
6. Letter: operations of C&D Landfill Cell 2 (Formerly Year 4). Prepared by S&ME,
Incorporated, July 9, 2004.
7. Permit Modification for Inclusion of Cells 3-8. Prepared by: S&ME, Incorporated, May
10, 2005.
8. Active C&D Waste Fill Area, Drawing 1. Prepared by S&ME, Incorporated, January 17,
2007.

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9. Disposal Volume Calculations, Table 1. Prepared by S&ME, Incorporated, January 17,
2007.
10. Union County C&D Landfill Permit Application for Continued Operation – Closure and
Post-Closure Plan and Operations and Waste Acceptance Plan. Prepared by S&ME,
Incorporated, Union County June 26, 2008 (5139), revised by SCS Engineers.
Application included Type 1 Composting Facility. October 2012 (17388), March 13,
2013 (18744) and July 9, 2012 (19917).

1.3 REGULATIONS

Solid Waste Management Rules 15A NCAC 13B .0500 and all conditions of the operating
permit granted by the NCDEQ Division of Waste Management, shall take precedence and be
complied with by landfill operators if there is an actual or perceived contradiction with the text
of this plan, unless written consent for variance(s) is granted by the NCDEQ Division of Waste
Management. The Facility supervisory staff should be familiar with the State Solid Waste
Management Rules and the Facility permit(s).

1.4 LOCATION

The Union County C&D Landfill is located on 2125 Austin Chaney Road in Wingate, North
Carolina. The existing landfill property is bordered on the north and west by Richardson Creek
and on the east/southeast by Austin Chaney Road.

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July 2020

2.0 OPERATIONAL DRAWINGS

Appendix B of the Union County C&D Landfill Permit Renewal prepared by CEC consists of
the approved permit application drawings provided by S&ME dated 2008 which illustrate the
site development prepared on topographical maps representative of existing site conditions.
These drawings are consistent with the requirements of Subparagraph (d)(1) of Rule .0537 of
15A NCAC 13B.

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3.0 WASTE ACCEPTANCE AND DISPOSAL REQUIREMENTS

The Facility will accept only those solid wastes it is permitted to receive including:

1. Land Clearing Debris: as defined by G.S. 120A-290, specifically, waste that is generated
solely from land-clearing activities, such as stumps, trees, etc.
2. Inert Debris Waste: defined as solid waste which consist solely of material that is
virtually inert (brick, concrete, rock, and clean soil);
3. Asphalt: in accordance with G.S. 130-294 (m);
4. Construction and Demolition Debris: defined as solid waste resulting solely from
construction, remodeling, repair, or demolition operations on pavements, buildings, or
other structures;
5. Other Wastes that are defined as similar to wastes typically found in the land clearing-
inert debris and C&D waste streams consisting of wastes at this time: roofing shingle
waste from manufacturers, waste building materials from mobile home/modular home
manufacturers and wooden pallets;
6. Asbestos waste as described in Section 3.1 below; and
7. Yard trash (waste), as defined in G.S. 130A-290, shall not be disposed of in the landfill
area. However, yard trash (waste), along with land-clearing debris, may be accepted for
processing in a designated area. Union County may stop accepting yard waste altogether
or they may compost yard waste on-site. Appropriate permits will be obtained if Union
County decides to compost yard waste.

The landfill owner or operator must notify the Division within 24 hours of attempted disposal of
any waste the C&DLF is not permitted to receive, including waste from outside the area the
landfill is permitted to serve.

3.1 ASBESTOS WASTE

The Union County Landfill does not currently accept asbestos waste for disposal.

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July 2020

3.2 WASTE EXCLUSIONS

The Facility will accept all types of wastes generated within approved service area except those
prohibited by 15A NCAC 13B .0542 (e). Specifically, the following types of wastes will not be
accepted:
1. Containers such as tubes, drums, barrels, tanks, cans, and bottles unless they are empty
and perforated to ensure that no liquid, hazardous or municipal solid waste is contained
therein;
2. Garbage as defined in G.S. 130A-290(a)(7);
3. Hazardous waste as defined in G.S. 130A-290(a)(8), to also include hazardous waste
from conditionally exempt small quantity generators;
4. Industrial solid waste unless a demonstration has been made and approved by the
Division that the landfill meets the requirements of Rule .0503(2)(d)(ii)(A);
5. Liquid wastes;
6. Medical waste as defined in G.S. 130A-290(a)(17a);
7. Municipal solid waste as defined in G.S. 130A-290(a)(18a);
8. Polychlorinated biphenyls (PCB) wastes as defined in 40 CFR 761;
9. Radioactive waste as defined in G.S. 104E-5(14);
10. Septage as defined in G.S. 130A-290(a)(32);
11. Sludge as defined in G.S. 130A-290(a)(34);
12. Special wastes as defined in G.S. 130A-290(a)(40);
13. White goods as defined in G.S. 130A-290(a)(44);
14. Yard trash (waste) as defined in G.S. 130A-290(a)(45); Yard trash, except in landfills
approved for the disposal of yard trash under rules adopted by the Commission. Yard
trash that is source separated from solid waste may be accepted at a solid waste disposal
area where the area provides and maintains separate yard trash composting facilities,
thermostats;

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July 2020

15. Batteries including but not limited to those from exit and emergency lights and smoke
detectors; and lead-acid batteries, as provided in G.S. 130A-309.70
16. Transformers, Used oil, Motor vehicle oil filters, antifreeze (ethylene glycol).
17. The owner or operator of a C&DLF must not knowingly dispose any type or form of
C&D waste that is generated within the boundaries of a unit local government that by
ordinance
a. Prohibits generators or collectors of C&D waste from disposing that type or form
of C&D waste.
b. Requires generators or collectors of C&D waste to recycle that type or form of
C&D waste.
18. Aluminum cans.
19. Oyster shells.
20. Discarded computer equipment, as defined in G.S. 130A-309.131.
21. Discarded televisions, as defined in G.S. 130A-309.131.
22. Wooden pallets, except that wooden pallets may be disposed of in a landfill that is
permitted to only accept construction and demolition debris.
23. Recyclable rigid plastic containers that are required to be labeled as provided in
subsection e of this section (G.S. 130A-309.10) have a neck smaller than the body of
the container. And that accept a screw top, snap cap, or other closure, the prohibition
on disposal of recyclable rigid plastic containers in landfills does not apply to rigid
plastic containers that are intended for use in the sale of distribution of motor oil or
pesticides.
24. Whole scrap tires, as provided in G.S. 130A-309.58(b). The prohibition on disposal
of whole scrap tires in landfills applies to all whole pneumatic rubber coverings, but
does not apply to whole solid rubber coverings. Per Rule .NCAC 13B .1106:
a. A scrap tire collection site permit shall be issued for a period of five years. Permit
renewal applications shall be submitted to the Division not less than 60 days prior
to the expiration date of the permit.
b. A permit shall specify the storage limit for a scrap tire collection site.

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c. Scrap tire collection sites shall meet the following siting and design requirements
for a permit to be issued:
(a) a site shall not be located within either the 100-year floodplain or 100
feet of any surface water; A site shall not be located within any wetland
as defined in the Federal Clean Water Act, section 404(b)(1), which is
hereby incorporated by reference, including any subsequent amendments
or additions.
(b) a site shall maintain a 50-foot buffer between all property lines and scrap
tire storage areas;
(c) the site shall be designed to prevent standing water on-site and prevent
off-site drainage problems;
(d) the site shall be designed to prevent liquid runoff from a potential tire fire
from entering any surface water
d. The following information shall be submitted to the Division in an application for
a scrap tire collection site permit:
(a) a site shall not be located within either the 100-year floodplain or 100 feet of
any surface water; A site shall not be located within any wetland as defined in
the Federal Clean Water Act, section 404(b)(1), which is hereby incorporated
by reference, including any subsequent amendments or additions.
(b) name and location of proposed facility, including street address or state road
number, city, county, and zip code;
(c) name, address, telephone number, and signature of site operator;
(d) name, address, telephone number, and signature of property owner, and a
copy of the deed or other legal description of the site that would be sufficient
as a description in an instrument of conveyance, showing property owner's
name;
(e) a map or aerial photograph showing the area within one-fourth mile of the
site, and identifying the following:

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(f) the property owned or leased for use as a scrap tire collection site by the
applicant; and
(g) the location of all homes, buildings, public or private utilities, roads, wells,
water courses, floodplains, and other details regarding the topography;
(h) a description of the operation of the facility;
(i) quantity of tires, expressed in tons, for the following:
(j) the quantity expected to be received per month from each source;
(k) the quantity expected to be shipped off-site per month; and
(l) the quantity expected to be stored on-site.
(m) plans for disposition of all tires collected at the site, including the names,
addresses, and permit information, if applicable, of all facilities where the tires
will be recycled, processed, or disposed;
(n) the projected date of commencing operation;
(o) a description of how any waste resulting from the operation of the tire site will
be disposed;
(p) a description of how the scrap tire collection site will meet the siting and
design requirements of Paragraph (c) of this Rule;
(q) a letter stating that this use complies with local zoning from the unit of local
government having zoning authority over the site. If no zoning is applicable,
the unit of local government shall provide documentation to that effect;
(r) a letter from the local fire protection authority accepting the responsibility for
fire protection services and an annual fire safety survey for the site;
(s) a description of how the scrap tire collection site will meet the operational
requirements of Rule
(t) .1107 of this Section;
(u) documentation of the operator's ability to meet the financial responsibility
requirements of Rule
(v) .1111 of this Section;

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(w) documentation that all processors or recyclers have access to a disposal site
that is permitted to receive scrap tires; and
(x) documentation from the Division of Energy, Land, and Mineral Resources
within the Department stating that the planned site use and operations comply
with the requirements of the Sedimentation Pollution Control Law (15A
NCAC 04).

Per Rule .NCAC 13B .1107 Scrap tire collection sites shall meet the following
operational requirements:
(1) Owners and operators of collection sites that process scrap tires shall submit to
the Division an annual report by August 1 of each year, for the previous
calendar year. The report shall be submitted on a form prescribed by the
Division. The following information shall be included in the report:
(a) the facility name, address, and permit number;
(b) the year covered by the report;
(c) the total quantity and type of scrap tires or processed tires received at
the facility during the year covered by the report;
(d) the total quantity and type of scrap tires or processed tires shipped from
the facility during the year covered by the report;
(e) the quantity of scrap tires or processed tires shipped to each receiving
facility identified by name and address; and
(f) the total quantity and type of scrap tires or processed tires located at the
facility on January 1 of the year covered by the report.
(2) All scrap tire collection, processing, or disposal sites that store scrap tires or
processed tires outdoors shall comply with the following technical and
operational standards:
(a) Whole scrap tires shall be placed in an outdoor scrap tire pile(s) having
dimensions no greater than 200 feet in length, 50 feet in width, and 15
feet in height.
(b) A 50-foot wide fire lane shall be placed around the perimeter of each

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scrap tire pile. Access to the fire lane for emergency vehicles shall be
unobstructed and passable at all times.
(c) The owner or operator of any scrap tire collection site shall control
mosquitoes and rodents to protect the public health and welfare. Whole
and partial scrap tires capable of holding water shall be covered upon
receipt with a water shedding material or disposed of, processed, or
removed from the site within ten days of receipt. Sliced scrap tires
stacked concave-side down shall not be required to be covered. The
Division may approve other methods of rodent and mosquito control, if
the owner or operator submits a request for the proposed method in
writing to the Division, and demonstrates the effectiveness of this
method to be protective of public health and the environment, and to
comply with the requirements of this Subchapter.
(d) If the scrap tire collection site receives tires from persons other than the
operator of the site, a sign shall be posted at the entrance of the site and
the sign shall state the operating hours. An attendant shall be present
when the site is open for receipt of tires.
(e) No operations involving the use of open flames, blow torches, or
flammable substances shall be conducted within 50 feet of a scrap tire
or processed materials pile.
(f) A fire safety survey shall be conducted annually by local fire protection
authorities that accepted responsibility for fire protection services in the
letter submitted in accordance with Rule.1106(d)(12) of this Section.
(g) Communication equipment shall be maintained at the scrap tire
collection site to assure that the site operator is able to contact local fire
protection authorities in case of a fire.
(h) Debris, grass, underbrush, and other potentially flammable vegetation
shall not be within 10 feet of scrap tires or processed materials.
(i) The operator of the scrap tire collection site shall prepare and keep an
emergency preparedness manual at the site. The manual shall be

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updated at least once a year, or upon changes in operations at the site.
The manual shall contain the following elements:
(i) a list of names and numbers of persons to be contacted in the
event of a fire, flood, or other emergency;
(ii) a list of the emergency response equipment at the scrap tire
collection site, its location, and how it should be used in the
event of a fire or other emergency;
(iii) a description of the procedures to be followed in the event of a
fire, including procedures to contain and dispose of the oily
material generated by the combustion of large numbers of tires;
and
(iv) a listing of all hazardous materials stored on-site, their location,
and information regarding precautions.
(j) The operator of the scrap tire collection site shall within 24 hours notify
the Division in the event of a fire or other emergency if that emergency
has potential off-site effects. Within two weeks of any emergency
involving potential off-site impact, the operator of the site shall submit
to the Division a written report describing the cause(s) of the
emergency, actions taken to deal with the emergency, results of the
actions taken, and an analysis of the success or failure of these actions.
(k) The operator of the scrap tire collection site shall maintain the following
records and make them available for inspection by the Division at the
Division's request:
(i) a copy of the permit;
(ii) records of the quantity of scrap tires and processed tires received
at the site, stored at the site and shipped from the site, including
destination (name and address of facility); and
(iii) all certification forms applicable to any tires received, stored, or
shipped from the site.
(l) Unless otherwise specified by the Division in the facility permit, the

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number of scrap tires stored at a scrap tire collection site shall not
exceed 60,000 tires on site at any time and shall not exceed the stated
number of scrap tires shipped off-site per month plus the stated number
of scrap tires disposed of on-site per month, except that the storage limit
for collection sites associated with scrap tire processing facilities shall
be determined by multiplying the daily through put of the processing
equipment used by 30.
(m) A scrap tire processing facility shall not accept any scrap tires for
processing above the number that may be processed daily if it has
reached its storage limit. At least 75 percent of both the scrap tires and
processed tires that are delivered to or maintained on the site of the
scrap tire processing facility site shall be processed and removed for
recycling or disposal at a solid waste management facility permitted by
the Division to receive such waste within one year of their receipt.
(n) The temperature of any above ground piles of compacted, processed
tires over 1,000 cubic yards in size shall be monitored and shall not
exceed 300 degrees Fahrenheit. Temperature control measures shall be
instituted so that pile temperatures do not exceed 300 degrees
Fahrenheit. Temperature monitoring and controls shall not be required
for processed tires disposed of in sanitary landfills permitted by the
Division to receive such waste.
(o) The operator of the scrap tire collection site shall prepare and keep a
contingency plan stating disposal methods or other means to handle tires
during adverse weather, equipment failure, or other conditions that
cause the site to be unavailable.

25. Per Rule .NCAC 13B .1109:

(a) a. Any scrap tire collection or disposal site that does not meet the requirements of this
Section shall be closed.
(b) In closing any non-conforming scrap tire site, the owner or operator shall:

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(1) prevent public access to the site;
(2) post a notice indicating the site is closed and the nearest permitted site where
scrap tires may be deposited;
(3) notify the Division of the closing prior to tire removal;
(4) remove all scrap tires, processed tires and residuals to a scrap tire collection site
that is permitted in accordance with this Section, or that is exempt from
permitting pursuant to G.S. 130A 309.57(d); or to a solid waste management
facility permitted by the Division to accept scrap tires or processed tires, and
provide receipts to the Division by a deadline that shall be specified by the
Division; and
(5) remove any solid waste to a solid waste management facility permitted by the
Division to receive such waste.
(c) Once all requirements set forth in Paragraph (b) of this Rule are complete, the owner or
operator shall notify the Division in writing.

The following wastes are not accepted if separate from C&D landfill waste. The subject wastes
include:
1. Lamps or bulbs including but not limited to halogen, incandescent, neon or fluorescent;
lighting ballast or fixtures;
2. Light switches;
3. Lead pipes;
4. Lead roof flashing;
5. Capacitors; and
6. Copper chrome arsenate (CCA) and creosote treated woods.

Waste accepted for disposal in a landfill unit shall be readily identifiable as C&D waste. C&D
waste that has been shredded, pulverized or otherwise processed shall not be accepted for
disposal from a facility unless that facility has received a permit from an authorized regulatory
authority which specifies such activities are inspected by the authority, and whose primary
purpose is recycling and reuse of the C&D material. Union County shall not knowingly dispose
any type or form of C&D waste that is generated within the boundaries of a unit of local

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government that by ordinance prohibits generators or collectors of C&D waste from disposing
that type or form of C&D waste or requires generators or collectors of C&D waste to recycle that
type or form of C&D waste.

3.3 RECYCLING

The County currently receives segregated pallets and yard waste. These materials are
periodically ground or shredded prior to off-site recycling as boiler fuel or composted on-site.
Recovered material is not subject to regulation as solid waste under this Article. In order for a
material that would otherwise be regulated as solid waste to qualify as a recovered material, the
Department may require any person who owns or has control over the material to demonstrate
that the material meets the requirements of this subsection. In order to protect public health and
the environment, the Commission may adopt rules to implement this subsection. Materials that
are accumulated speculatively, as that term is defined under 40 Code of Federal Regulations §
261 (July 1, 2014 Edition), shall not qualify as a recovered material, and shall be subject to
regulation as solid waste. In order to qualify as a recovered material, the material shall be
managed as a valuable commodity in a manner consistent with the desired use or end use, and
all of the following conditions shall be met:
1. Seventy-five percent (75%), by weight or volume, of the recovered material stored at a
facility at the beginning of a calendar year commencing January 1, shall be removed from
the facility through sale, use, or reuse by December 31 of the same year.
2. The recovered material or the products or by-products of operations that process
recovered material shall not be discharged, deposited, injected, dumped, spilled, leaked,
or placed into or upon any land or water so that the products or by-products or any
constituent thereof may enter other lands or be emitted into the air or discharged into any
waters including groundwaters, or otherwise enter the environment or pose a threat to
public health and safety. Facilities that process recovered material shall be operated in a
manner to ensure compliance with this subdivision.
3. The recovered material shall not be a hazardous waste or have been recovered from a
hazardous waste.

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4. The recovered material shall not contain significant concentrations of foreign constituents
that render it unserviceable or inadequate for sale, or its intended use or reuse. (1989, c.
784, s. 2; 1995 (Reg. Sess., 1996), c. 594, s. 9; 2015-1, s. 2(b).)

White goods as defined in G.S. 130A-290(a)(44), shall not be disposed of in the landfill. White
goods are however accepted for on-site consolidation and off-site recycling and disposal. Freon
containing white goods are segregated for Freon removal. The date and quantity of Freon
removal will be documented and placed in the Operating Record. Tires, antifreeze, oil, batteries,
and pesticide containers are accepted for on-site consolidation and off-site disposal and/or
recycling. Tires are stored under cover in tractor trailers prior to shipment. Antifreeze, oil,
batteries, and pesticide containers are stored under cover prior to shipment. In addition, the
County is currently investigating the options of recycling oil filters, and electronics.

3.4 WASTE SCREENING

The landfill operator shall be responsible for screening wastes to ensure that hazardous or
unacceptable wastes are not disposed in the landfill. Screening of wastes (load inspections) shall
be accomplished as follows:

Informal load checking will be the responsibility of all employees, particularly those that work at
the entrance area and those that work at or near the active working face. Each employee will
observe vehicles entering the Facility and landfill for potentially unauthorized waste and will
alert management personnel if unauthorized wastes are suspected. Facility personnel involved
with the screening inspections shall be trained for identification of hazardous and liquid wastes
through programs offered by the State or by SWANA. Through the waste collection programs,
there will be several checkpoints:
· Facility Entrance – Only authorized vehicles and material will be allowed beyond the
scales. The scale attendant will refuse entry to any unauthorized vehicles or vehicles
observed carrying unauthorized waste. In addition, the scale personnel and operators shall
be educated to recognize probable violations to the acceptable waste guidelines.

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· Active face checkpoints – All incoming loads of waste will be observed by the equipment
operators as it is discharged and compacted at the active face.

The frequency of the random inspections shall be determined by the quantity and type of waste
received, the familiarity with the generators and/or transporters, and the occurrences of identified
unauthorized waste. Inspections should be performed at the minimum of the following
frequency: Once a week. The inspections also need to be random. The time of day and day of
week shall vary between inspections. The transporter/hauler selected for inspection shall also
vary between inspections. Once the random inspection is completed, operations personnel record
the information required on the Random Load Inspection form contained in Attachment 1.

If hazardous waste, liquid waste, MSW, industrial waste or waste not characterized as C&D or
LCID are not found in the inspected load, then the waste is disposed of on the working face in
the cell immediately after completion of the inspection. If hazardous waste, liquid waste, MSW,
industrial waste or waste not characterized as C&D or LCID are identified in the load, the
material will be removed by the responsible party for disposal at an appropriate facility and the
Screening Inspector shall immediately notify the Operations Manager. If hazardous waste is
identified, the hazardous materials emergency response team for Union County shall also be
notified. Emergency response team contact information is provided in Attachment 2.

If liquid waste is discovered, it shall be contained temporarily until an absorbent can be placed or
until proper containers are available for pumping. The saturated absorbent or containers will then
be disposed of at an appropriate facility. The hazardous waste shall be contained in the same
manner as the liquid waste and will be disposed of at a suitable facility for hazardous waste
disposal as determined by the emergency response team or a qualified environmental/hazardous
waste consultant.

Costs for material handling and disposal will be the responsibility of the hauler. Union County
will take appropriate actions toward the hauler, including but not limited, to revoking disposal
privileges. If the presence of excluded waste is discovered only after spreading and compaction

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has commenced, the operator will contact the scale house to establish the hauler and generator
responsible for the load so that they can be made aware of their mistake and their future loads
inspected more carefully. The landfill operator shall notify the Division within 24 hours of any
attempt to dispose of any waste products not approved by the Division for disposal at the facility.

3.5 COVER, SPREADING, AND COMPACTING

Union County shall restrict solid waste placement to the smallest area feasible for operations.
The solid waste shall be compacted as densely as practical using landfill compactors and dozers.
Fencing and/or soil berms shall be provided within the landfill area to confine solid waste which
is subject to be blown by the wind. At the conclusion of each operating day, windblown material
resulting from the operation shall be collected and disposed of by the facility. Solid waste shall
be covered with six (6) inches of earthen material, or approved alternate cover material and
thickness, when the waste disposal area exceeds one-half acre and at least once weekly. Cover
shall be placed at more frequent intervals if necessary to control disease vectors, fires, odors,
blowing litter, and scavenging. The date and time of the cover placement shall be documented
and maintained in the Operating Record. Areas which will not have additional wastes placed on
them for three (3) months or more, but where final termination of disposal operations has not
occurred, shall be covered and stabilized with a 12-inch thick intermediate cover and vegetative
ground cover or other stabilizing material.

The County does not currently utilize alternate cover materials or thicknesses. However, the
facility may utilize alternative materials or an alternative thickness of cover for the landfill units
following approval by the Division.

3.6 SURVEY CONTROL

Operations personnel will periodically monitor landfill top and side slope elevations with a level
or through construction staking by a land surveyor. The survey shall be performed by a
registered land surveyor duly authorized under North Carolina law to conduct such activities.

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When top and side slope elevations approach design grades, the final waste grades will be staked
to provide filling operations consistent with the approved Drawings. Within 60 days of the
Division's written request, the County shall conduct a survey of active or closed portions of unit
or units at the facility in order to evaluate whether operations are being conducted in accordance
with the approved design and operational plans. The County shall then report the results of such
survey, including a map produced by the survey, to the Division within 90 days of receipt of the
Division's request.

3.7 AIR CRITERIA AND FIRE CONTROL

Open burning of solid waste, except for the approved burning of land clearing debris generated
on-site or debris from emergency clean-up operations shall be prohibited at the facility. The open
burning at the landfill should also obtain approval form NC Division of Air Quality, the local
Fire Marshal, and a burning permit from the north Carolina Forest Services. The copy of the
approval documents and the permit should be forwarded to the SWS. A notation of the date of
approval and the name of the Division personnel who approved the burning shall be included in
the Operating Record. Equipment and stockpiled soil is available to control accidental fires.
Union County has made arrangements with Wingate Fire Department to provide firefighting
services as needed. Fire Department contact information is provided in Appendix II. Any fires
or explosions that occur at the facility shall be verbally reported to the Division within 24 hours
and written notification provided within 15 days. Written notification shall include the suspected
cause of fire or explosion, the response taken to manage the incident, and the action(s) to be
taken to prevent the future occurrence of fire or explosion. The SWS has prepared a standardized
fire incidence report which can be downloaded from the link:
https://files.nc.gov/ncdeq/Waste%20Management/DWM/SW/Forms/FireOccurrenceReport.pdf.
If the County likes to use the form, please append a copy of the form to the Operations Plan.
A “hot load” is a load of burning solid waste in an incoming truck. It may be actively burning,
but more likely will just be smoldering. When a “hot load” is discovered in a vehicle, the driver
should be directed to dump the material in an area located away from the working face and
cleared of vegetation and debris. After the “hot load” is dumped, the equipment operator should

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spread the material, and then cover it with soil to smother the fire. After the fire has been
extinguished, the material should remain in the cleared area until no evidence of fire remains. At
the end of the day, check to make sure that the waste is an acceptable waste and that no fire or
smoldering remains. If these checks are satisfactory, then place the waste into the landfill.

3.8 ACCESS AND SAFETY

Landfill operations must be conducted considering the health and safety of the facility’s
operating staff. Union County will provide each of the operating staff with site specific safety
training prior to landfill operations and designate safety protocol on-site in accordance County
practices. The eastern side of the site along Austin Chaney Road is currently enclosed by
fencing. Access to the majority of the north and west portions of the site is restricted by
Richardson Creek. Access to remaining portions of the site to the north, southwest, and south is
restricted by steep terrain and dense vegetation. Site access is controlled by a gate at the main
entrance. A security check station and weigh scales are located at the landfill entrance to weigh
and monitor the incoming waste for proper disposal. Service access roads are constructed of
gravel/dirt, and are maintained to ensure appropriate access and egress of the site.

Signs providing information on disposal procedures, the permit number, hours of operations,
statements that no hazardous or un-permitted waste can be received without written permission
from the State Division of Waste Management, Solid Waste Section (Division) and other
pertinent information are posted at the site entrance. Traffic signs and markers are provided, as
necessary, to promote an orderly traffic pattern to and from the active disposal area and maintain
efficient operating conditions. The County shall maintain permanent physical markers that
accurately identify the edge of approved waste footprint for all active, inactive and closed
disposal units at the landfill facility.

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An individual trained by the Solid Waste Association of North America (SWANA) shall be on
duty at the site while the facility is open for public use and at all times during active waste
management operations to provide compliance with operational requirements. The County will
maintain adequate equipment on-site for landfill operations. The County will perform equipment
maintenance on-site as needed to keep equipment in good working order.

3.9 EROSION AND SEDIMENTATION CONTROL

Erosion/sedimentation control structures, which include diversion berms around the landfill
perimeter and on side slopes, down-drain piping, sediment traps, sediment basins, check dams,
silt fence, and other measures, will be used to minimize on-site erosion and prevent sediment
from leaving the site. Vegetative cover will also be used to reduce erosion and help prevent off-
site transportation of sediment. Maintenance of the control structures will be conducted in
accordance with Erosion and Sedimentation Control Plan for the site and the North Carolina
Erosion and Sedimentation Control Guidelines.

The sediment basins shall be inspected at minimum weekly, and after each significant rain event
(1/2-inch or greater). Sediment shall be removed and the basin restored to original dimensions
after sediment has accumulated to one-half (1/2) of design volume as indicated by cleanout stripe
on riser structure. Removed sediment shall be placed in an area that has sediment controls in
place. Sediment basin spillways, baffles, embankments and outlet control structure shall be
inspected at the same time for erosion damage and piping (embankment only). All necessary
repairs shall be made to prevent basin failure.

Silt fencing shall be inspected at least once per week and after every rainfall event. Any tears,
cracks or overall failure should be repaired and/or replaced immediately. Sediment deposits
shall be removed as necessary to ensure proper functioning of fencing. Silt fencing shall remain
until final site stabilization has occurred.

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Permanent ditches should be seeded and matted after their construction; they should be inspected
after rain events for any failure of the ditch or erosion control matting. Outlet protection
measures used to protect from damage to channel vegetation shall be inspected for wash out.
Necessary repairs/replacements should be made immediately, and rip rap should be added where
necessary.

Embankment and landfill cover slopes shall be periodically inspected for erosion. The slopes
shall be mowed no more than twice per year. The embankment slopes shall be re-fertilized in the
second year unless vegetation growth is fully adequate. The damaged areas shall be re-seeded
(permanent seeding for embankment slopes and temporary seeding for landfill cover slopes),
fertilized and mulched immediately. Seeding, fertilizing and mulching shall be in accordance
with the Erosion and Sedimentation control plan. The Engineering Report includes all relevant
calculations and references for erosion and sedimentation control measures design.

Landfill slopes will be periodically monitored for erosion and shall be mowed at least once a
year. The landfill slopes shall be fertilized in the second year unless vegetation growth is fully
adequate. Damaged areas shall be reseeded, fertilized and mulched.

Seeding, fertilizing and mulching shall be in accordance with the North Carolina Erosion and
Sedimentation Control Guidelines.

3.10 DRAINAGE CONTROL AND WATER PROTECTION

Surface water shall not be impounded over or within the waste. The waste surface shall be
graded and soil berms used, as necessary, to divert surface water away from the operational area
and away from the waste. Waste shall not be disposed of in water. The waste surface shall be
graded and soil berms used, as necessary, to divert surface water away from the operational area
and away from the waste.

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The landfill should be inspected regular and after a major rainfall event for a leachate outbreak at
sloped areas including both active C&DLF unit and the closed unlined MSWLF unit which is
underneath the C&DLF unit. If a Leachate outbreak is observed, the County should:
· Notify the Solid Waste Section (SWS) within 24 hours of any release or discharger
outside of landfill unit per Rule 15A NCAC 13B .1604(b)(2)(L)(iii).
· Environmental impact investigation plan should be prepared and implemented after it is
approved by the SWS. The guidance document for the conducting investigation can be
found at:
https://edocs.deq.nc.gov/WasteManagement/0/edoc/1319075/MSW%20Leachate_Releas
e_Sampling_Guide.pdf?searchid=22b91c58-be48-4f48-97ec-ae3766e88565
· Restore the landfill damaged portion.

Leachate at the facility is currently contained on-site. If it becomes necessary to collect leachate,
methods for leachate handling will be evaluated at that time. Leachate handling methods will be
submitted to NCDEQ and other relevant and appropriate agencies for review and approval at that
time.

The facility will be operated in a manner which prevents the discharge of pollutants into waters
of the United States, including wetlands. Such discharge would be in violation of the
requirements of the Clean Water Act, including the National Pollutant Discharge Elimination
System (NPDES) requirements, pursuant to Section 402. Additionally, the facility will be
operated in a manner which prevents the discharge of a non-point source of pollution to waters of
the United States, including wetlands. Such discharge would be in violation of the requirements
of an area-wide or State-wide water quality management plan that has been approved under
Section 208 or 319 of the Clean Water Act, as amended.

3.11 DISEASE AND VECTOR CONTROL & DUST CONTROL

The Landfill Facility will prevent or control the on-site population of disease vectors using
techniques appropriate for the protection of human health and the environment. Disease vectors

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are defined as any rodent, flies, mosquitoes, or other animals or insects capable of transmitting
disease to humans. Cover material will be applied as an effective vector control measures. It is
not anticipated that additional vector control will be required. If vectors are not adequately
controlled by the normal monthly cover application frequency, the frequency of cover application
will be increased. If increased cover application frequency fails to control vectors, other pest
control methods will be implemented. Due to the nature of landfill operations, dust has the
potential to be generated during dry periods of the year. The following control measures may be
employed at the landfill:

• Soil wetting. Periodic watering using a water tank truck will be utilized to control dust
originating from paved and unpaved access roads. The main access road to the scale will
be paved, while the perimeter roads will be paved or graved-surfaced. Soil wetting may
have to be performed several times during an operating day for gravel-surfaced roads;

3.12 OPERATING RECORD AND RECORDKEEPING

The owner and operator will record and retain at the facility the following information including
dates and times:
· Records for random waste inspections, monitoring results, certifications of training, and
training procedures; Records of random waste inspections, monitoring results,
certifications of training, and training procedures required by the Solid Waste
Management Rules, Section .0542;
· Amounts by weight of solid waste received at the facility to include, consistent with G.S.
130A-309.09D, county of generation;
· Demonstration, certification, finding, monitoring, testing, or analytical data required by
the Solid Waste Management Rules, Sections .0544 through .0545; Closure or post-
closure monitoring, testing, or analytical data as required by the Solid Waste
Management Rules, Section .0543;
· Cost estimates and financial assurance documentation required by the Solid Waste
Management Rules, Section .0546;

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· Notation of date and time of placement of cover material;
· Audit records, compliance records and inspection reports, and
· Fire occurrence report, burning permit/notation, and leachate outbreak.

If records are located at another location, it must be approved by the Solid Waste Section. All
information contained in the operating record will be furnished to the Division upon request or
made available for inspection by the division. The operating record will also include a copy of
all approved permits and Monitoring Plans.

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4.0 FACILITY COMPOSTING

Union County owns and operates a Type I composting operation within the Union County Solid
Waste Management Facility (Facility) property located at 2125 Austin Chaney Road in Wingate.
The Facility operates under solid waste permit number 90-01. The composting operation will
function in accordance with the applicable portions of Solid Waste Management Rule; NCAC
15A 13B .1400 – Solid Waste Compost Facilities. A Type I composting operation as defined by
the rule may receive yard and garden waste, silvicultural waste, untreated and unpainted wood
waste or any combination thereof.

The Landfill Manager is responsible for the operations, maintenance, and safety for the
composting operation. The County shall employ personnel with compost training credentials to
operate the compost unit and provide rule required annual training accord to 15 A NCAC 13B
.1406(19):
· Facilities permitted as Large Type 1, Large Type 2, all Type 3, and all Type 4 shall have
an operator, supervisor, or manager trained in accordance with the requirements in G.S.
130A-309.25. No less than one trained operator, supervisor, or manager meeting the
requirements of this Sub-item shall be onsite during the facility's operating hours or
available at a phone number provided in the facility permit.
· Training in accordance with G.S. 130A-309.25(c) shall be required every five years.
· Persons who have achieved and maintain compost operator certification by the US
Composting Council Certification Commission or equivalent shall be considered as
having met the training requirements in G.S. 130A-309.25 for the permitted facility.
· Owners or operators shall provide annual training for facility staff, including a review of
the operations plan and permit documents.

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· Documentation of training required in Sub-items (a) and (b) of this Item shall be
maintained at the facility and made available to the Division upon request.
· Facilities permitted before the readopted effective date of this Rule shall meet the
requirements of Sub-item (a) of this Item within three years of the readopted effective
date of this Rule. Facilities permitted after the readopted effective date of this Rule shall
meet the requirements of Sub-item (a) of this Item within 18 months of permit issuance.

Contact information for the Landfill Manager and other important persons is included in
Appendix II of the Facility’s Operations and Waste Acceptance Plan, which this document is
part of.

4.1 COMPOSTING OPERATIONS LOCATION

The location for the Type I composting operation is within the County’s Solid Waste
Management Facility property, south of the active construction and demolition landfill and
adjacent to the active white goods collection area. Composting operations shall occupy
approximately 1.75 acres. The composting operation is consistent with previous operations in the
same area, where yard waste and wood pallets were collected, ground up, stockpiled, and
transported off-site for boiler fuel. The composting operation is located adjacent to and on an un-
lined MSW landfill that was closed in December 1997 with a soil cover.

The location, extents, and general configuration for the composting operation are shown on the
included Drawing No. 1 and Drawing No. 2. The extents and specific locations for the
composting operation shall be marked in the field with durable markers.

4.2 WASTE ACCEPTANCE AND QUANTITY

The waste stream (feedstock) for the composting operations will consist of the following
materials and any combination thereof:

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· Tree stumps;
· Tree limbs;
· Brush;
· Grass clippings;
· Leaves;
· Wood pallets and untreated and unpainted wood (i.e. wood material that has not been
glued, treated with preservatives, painted, stained, or varnished); No grinding of wood
wastes shall take place on rainy or windy days, and
· Similar vegetative material.

No other waste materials will be accepted for composting. All detected prohibited wastes will be
handled by the approaches described in Section 3.4 of this Operations plan. The wooden pallet,
wooden waste, and high C:N ratio vegetative waste must be separately stockpiled and processed.
The intermediate material or fines may be co-mingled for compost. The expected average weight
of feedstock materials received for composting annually is 4,200 tons which equates to
approximately 22,400 cubic yards of material.

The random waste screening described in Section 3.4 of this Operations plan shall be
implemented for compost waste screening. Any detected non-conformance wastes must be
temporarily stored on-site and disposed of at the on-site transfer station by the end of each
operating day.

4.3 COMPOSTING PROCESS

Composting operations shall be conducted within the designated area as outlined in Section 4.1.
The general process for composting operations to follow, in sequential order, is as follows:
1. The feedstock materials will be accepted at a designated acceptance area within the
composting operation area, chosen by the Landfill Manager. The acceptance area size and
location may be altered as needed to reflect changes in operations. Stockpiling feedstock
shall be limited to 30-feet in height by 50-foot in width by the as needed length. A

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stockpile size and location shall be manageable and accessible by equipment and
vehicular traffic.
2. During periodic intervals throughout a year the feedstock materials are processed in a tub
grinder and ground up into mulch.
3. The mulch is then formed into parabolic windrows with cross-section dimensions of 10 to
20-feet wide by 6 to 12-feet high. The windrow size and length determination shall be
based on the capability of equipment and operator in turning the windows in a reasonable
amount of time.
4. The windrows shall be aerated by turning or dividing them when compost internal
temperatures reach 160 degrees Fahrenheit (°F) [71 degrees Celsius (°C)], ±5 °F, or at
least monthly by front-end loader(s). To minimize the possibility for spontaneous
combustion, maintain compost internal temperatures below 160 °F, ±5 °F.
5. Take windrow compost internal temperature readings at least every month initially and
more frequently when internal compost temperatures are higher, above 120 °F. The
temperature readings schedule should be adjusted to reflect actual conditions and good
judgment.
6. The windrows internal compost temperature shall be elevated to at least 131 degrees
Fahrenheit (°F) or 55 degrees Celsius (°C) for at least three (3) days. When this occurs,
the compost material is considered a finished product and ready for public use, on-site
use, or stockpiled.
7. Windrows internal compost temperature readings will be documented on Field Logs
showing individual windrow identification, temperature reading, and date collected. The
Field Logs will be maintained on-site in the Facility’s records.
8. The finished product may be stockpiled on-site before use.

4.4 STORMWATER COLLECTION AND CONVEYANCE

Stormwater run-off from the composting operations area should be minimal having relatively flat
slopes ≤1%. Stormwater that flows toward the composting operations area from up-gradient
areas is diverted to the Facility’s existing stormwater collection and conveyance system, away

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from the composting operations area. The division of stormwater shall be maintained by the
Facility.

4.5 ENVIRONMENTAL MONITORING

Environmental monitoring for the composting operations is conducted through the use of the
Facility’s existing regulatory groundwater and surface water monitoring and reporting. The
Facility conducts semi-annual groundwater laboratory testing per 15A NCAC 02L.0202
groundwater quality standards for CFR Part 258 Appendix I and II constituents. In addition, the
Facility completes stormwater qualitative monitoring and laboratory testing at the Facility’s
stormwater outfalls. The Facility’s stormwater discharges are permitted under NPDES General
Permit Number NCG120000, Certificate of Coverage Number NCG120085.

4.6 MAINTENANCE

The composting operation area shall be kept in a neat and organized manner. Access roads to the
designated waste (feedstock) acceptance area and around the perimeter of the composting
operations area shall be kept in a good condition for vehicular travel.

The composting operation area shall be maintained at current grades with no depression for
ponding of water. Additional soil material will be placed to fill depressions, replace removed soil
material by composting operations, construct access roads, or to promote stormwater drainage.
No excavation of soil material is allowed within the composting operations area. Portions of the
composting operation are located on a closed MSW landfill and the closure soil cover must be
maintained. Any soil that is removed as part of composting operations shall be replaced to
previous grades at a minimum. Periodic inspections shall be conducted by Facility personnel for
the composting operations including the ground surface condition.

4.7 CONTINGENCY FOR COMPOSTING OPERATIONS

-31- Union County Landfill Operation Plan
July 2020

The contingency in the event the waste stream cannot be composted in accordance with the
process outlined in Section 4.3 and applicable portions of Solid Waste Management Rule; NCAC
15A 13B .1400 is the waste will be stockpiled, ground up into mulch by a tub grinder, and
transported off-site for boiler fuel. This use of yard waste, land clearing debris, and wood pallets
as boiler fuel is consistent with the regulatory approved operations at the Facility. Classification,
Testing, and Distribution of solid waste compost per Rule 15A NCAC 13B .1407:
1. Compost or mulch that is produced at a Type 1 facility, is free from offensive odor,
contains no sharp particles, and, for compost, has met the temperature requirements in
Rule .1406(11) of this Section shall be classified Grade A and have unrestricted
application and distribution. Compost analytical testing shall not be required for Type 1
compost if temperature requirements in Rule .1406(11) of this Section have been met
and documented.
2. Compost produced from Type 2, 3, and 4 facilities shall be sampled and analyzed as
follows:
a. a composite sample of the compost produced at each compost facility shall be
analyzed at intervals of every 20,000 tons of compost produced or every six
months, whichever comes first, for metals and pathogens;
b. compost samples shall be analyzed for the metals listed in 40 CFR 503.13(b)(3),
except that analysis for mercury shall not be required for Type 2 and 3 facilities,
and analysis for arsenic and selenium shall not be required for Type 2 facilities.
The concentration of metals in compost offered for sale or distribution to the
public shall not exceed the pollutant concentration limits listed in 40 CFR
503.13(b)(3). 40 CFR 503.13 and 40 CFR 503.32 are incorporated by reference
including subsequent amendments and editions. Copies of the Code of Federal
Regulations may be obtained from the U.S. Government Publishing Office
website at www.gpo.gov at no cost;
c. compost samples shall be analyzed for pathogens, either for fecal coliform or
salmonella bacteria. The concentration of pathogens in compost offered for sale
or distribution to the public shall not exceed the concentration limits listed in 40
CFR 503.32(a)(3);

-32- Union County Landfill Operation Plan
July 2020

d. sample collection, preservation, and analysis shall assure valid and
representative results. At least three individual samples of equal volume shall be
taken from each batch produced in separate areas along the side of the batch.
Each sampling point shall be sampled from a depth of two to six feet into the
pile from the outside surface of the pile as follows:
i. metals samples shall be composited and accumulated over a six-month
period or at intervals of every 20,000 tons of product produced,
whichever comes first; and
ii. pathogens samples shall be a representative composite sample of the
compost and shall be processed within a period of time required by the
testing procedure;
e. analytical testing methods shall be in accordance with the procedures of one of
the following:
i. EPA publication SW-846, "Test Methods for Evaluating Solid Waste:
Physical/Chemical Methods." This document is incorporated by
reference, including subsequent amendments and editions, and may be
obtained free of charge at https://www.epa.gov/hw-sw846;
ii. the U.S. Department of Agriculture/U.S. Compost Council publication
"Test Methods for the Examination of Composting and Compost"
(TMECC). This document is incorporated by reference including
subsequent amendments and editions, and may be obtained for a fee of
three hundred fifty dollars ($350.00) at
https://compostingcouncil.org/tmecc/ or a copy may be reviewed free of
charge at the Division of Waste Management, Solid Waste Section office
at 217 West Jones Street, Raleigh, N.C. 27603; or
iii. other methods that are approved by the Division as providing equivalent
standards of analysis; and
f. the Division may decrease or increase the parameters to be analyzed or the
frequency of analysis based upon monitoring data, changes in the waste stream
or processing, or information regarding the potential for the presence of

-33- Union County Landfill Operation Plan
July 2020

contaminants that are not required to be analyzed in this Paragraph.
3. Compost produced from Types 2, 3, and 4 facilities that meet the requirements of
Subparagraphs (b)(2) and (b)(3) of this Rule shall be classified Grade A compost and
shall have unlimited, unrestricted distribution, except as otherwise determined by the
Division based on analyses of parameters pursuant to Subparagraph (b)(6) of this Rule.
4. The facility operator shall be responsible for meeting the requirements of the North
Carolina Department of Agriculture and Consumer Services Plant Industry Division
Seed and Fertilizer Section concerning the distribution of this product.

4.8 COMPOST UNIT CLOSURE REQUIREMENTS

When the permitted compost facility ceases operations, the owner or operator shall meet the
following conditions:
1. All feedstock and unfinished compost materials shall be removed from the site and taken
to a permitted solid waste facility within 180 days;
2. finished compost materials left onsite shall comply with G.S. 130A-309.05; and
3. the owner or operator shall notify the Division in writing upon completion of the
requirements of Subparagraph (1) of this Paragraph.

When a permitted compost facility has been closed in accordance with the requirements of
Subparagraph (a) of this Rule, the permit shall be terminated. Future compost operations at the
site shall require submittal of a new permit application in accordance with Rule .1405 of this
Section.

4.9 RECORD KEEPING AND REPORTING REQUIREMENTS

When the permitted compost facility ceases operations, the owner or operator shall meet the
following conditions:
1. Record Keeping: Facility owners or operators shall maintain records for no less than
five years. The following records shall be available for inspection by Division personnel

-34- Union County Landfill Operation Plan
July 2020

during the facility's normal business hours and shall be sent to the Division upon
request:
a. daily operational records that include temperature data (length of the composting
period) and quantity of material processed;
b. analytical results of compost testing;
c. the quantity, type, and source of waste received;
d. the quantity of waste processed into compost;
e. the odor management records required by Rule .1405(10) of this Section; and
f. the quantity of compost removed for use or disposal and the market or permitted
disposal facility.
2. Annual Reporting: An annual report for the period July 1 to June 30 shall be submitted
by all facility owners or operators to the Division by August 1 of each year and shall
contain:
a. the facility name, address, and permit number;
b. the total quantity in tons, with sludge values expressed in dry weight, and the
type of waste received at the facility during the year covered by the report,
including tons of waste received from local governments of origin;
c. the total quantity in tons of compost produced at the facility during the year
covered by the report;
d. the total quantity in tons of compost removed for use or disposal from the
facility during the year covered by the report;
e. monthly temperature monitoring to support Rule .1406 of this Section; and
f. the results of analytical testing required by Rule .1407 of this Section.
3. Yearly totals of solid waste received and composted shall be reported back to the local
government of origin for annual recycling reporting.

ATTACHMENT 1

RRAANNDDOOMM LLOOAADD IINNSSPPEECCTTIIOONN
UUNNIIOONN CCOOUUNNTTYY LLAANNDDFFIILLLL

Inspectors Name___________________________________________________________________

Date_____________________________

Time_____________________________

TTRRAANNSSPPOORRTTAATTIIOONN CCOOMMPPAANNYY IINNFFOO

Name_____________________________________________________________________________

Phone Number_______________________________________

Drivers Name_______________________________________________________________________

Vehicle Type________________________________________

Vehicle Number______________________________________

Last Stop___________________________________________________________________________

Contents____________________________________________________________________________

OOBBSSEERRVVAATTIIOONNSS AANNDD AACCTTIIOONNSS TTAAKKEENN

Drivers Signature________________________________________________________________________

Inspectors Signature______________________________________________________________________

ATTACHMENT 2

Union County Contacts:

Union County Public Works
Mr. John Yvars, Solid Waste Division Director
500 N. Main St., Suite 600
Monroe, NC 28112
[phone]
[e-mail]

Union County C&D Landfill
Ms. Chris Medlin, Landfill Manager
2125 Austin Chaney Road
Wingate, NC 28174
[phone]
[e-mail]

North Carolina Regulatory Contacts:

North Carolina Department of Environmental Quality
Division of Waste Management, Solid Waste Section
Mooresville Regional Office
610 East Center Ave, Suite 301
Mooresville, NC 28115
[phone]

Emergency Contacts:

Union County Emergency Management
500 N. Main Street, Suite 419
Monroe, NC 28112
[phone], [phone]
After Hours Phone: [phone]

Union County Sheriff's Office
Sheriff
3344 Presson Road
Monroe, NC 28112
[phone]

Wingate Fire Department
Travis Stegall, Chief
204 North Main Street
Wingate, NC, 28174
[phone]

APPENDIX B
ENGINEERING DRAWINGS

8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:COVER SHEET
151-797 TASK 14
N.T.S.
MAY 2020 CTH
NTB
SLB19C000NORTH LIST OF DRAWINGS:JULY 2020C000COVER SHEETC100EXISTING SITE CONDITIONSC200OVERALL SITE PLANC300PERMITTED FINAL COVER PLANC400PERMIT MOD FINAL CLOSURE PLANC500DETAILSC501DETAILSC502DETAILSC503DETAILSMINOR PERMIT MODIFICATION APPLICATIONFORUNION COUNTY LANDFILL C&D LANDFILL(PERMIT No. 90-01)UNION COUNTY, NORTH CAROLINASITENORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035www.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]
UNION COUNTY PUBLIC WORKS
UNION COUNTY LANDFILL MINOR MODIFICATION
2125 AUSTIN CHANEY ROAD
WINGATE, NC
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:EXISTING SITE CONDITIONS
151-797 TASK 14
1"=100'
MAY 2020 CTH
NTB
SLB29C100 NORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035www.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]
UNION COUNTY PUBLIC WORKS
UNION COUNTY LANDFILL MINOR MODIFICATION
2125 AUSTIN CHANEY ROAD
WINGATE, NC LEGENDREFERENCE
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:OVERALL SITE PLAN
151-797 TASK 14
1"=200'
MAY 2020 CTH
NTB
SLB39C200 NORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035LEGENDwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]
UNION COUNTY PUBLIC WORKS
UNION COUNTY LANDFILL MINOR MODIFICATION
2125 AUSTIN CHANEY ROAD
WINGATE, NCREFERENCE
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:PERMITTED FINAL COVER PLAN
151-797 TASK 14
1"= 60'
MAY 2020 CTH
NTB
SLB49C300 NORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035LEGENDwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]
UNION COUNTY PUBLIC WORKS
UNION COUNTY LANDFILL MINOR MODIFICATION
2125 AUSTIN CHANEY ROAD
WINGATE, NCREFERENCE
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:PERMIT MOD FINAL CLOSURE PLAN
151-797 TASK 14
1"= 60'
MAY 2020 CTH
NTB
SLB59C400 NORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035LEGENDwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]
UNION COUNTY PUBLIC WORKS
UNION COUNTY LANDFILL MINOR MODIFICATION
2125 AUSTIN CHANEY ROAD
WINGATE, NCREFERENCE
DESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:DETAILS
151-797 TASK 14
N.T.S.
MAY 2020 CTH
NTB
SLB69C500 GREENWAY WASTE SOLUTIONS OF APEX, LLC
C&D LANDFILL & COMPOST FACILITY
MAJOR PERMIT MODIFICATION APPLICATION
APEX, NORTH CAROLINANORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035SILT FENCEOUTLET PROTECTIONwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]TEMPORARY SLOPE DRAIN8AB3456712CDEFGH83456712ABCDEFGHEROSION CONTROL MATTING
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:DETAILS
151-797 TASK 14
N.T.S.
MAY 2020 CTH
NTB
SLB79C501 GREENWAY WASTE SOLUTIONS OF APEX, LLC
C&D LANDFILL & COMPOST FACILITY
MAJOR PERMIT MODIFICATION APPLICATION
APEX, NORTH CAROLINANORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035SKIMMER DETAILSEDIMENT BASINwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]POROUS BAFFLEROCK CHECK DAM
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:DETAILS
151-797 TASK 14
N.T.S.
MAY 2020 CTH
NTB
SLB89C502 GREENWAY WASTE SOLUTIONS OF APEX, LLC
C&D LANDFILL & COMPOST FACILITY
MAJOR PERMIT MODIFICATION APPLICATION
APEX, NORTH CAROLINANORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035EDGE OF WASTE MARKERCOVER CAP SYSTEM > 5% SLOPESwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]PERIMETER DRAINAGE DITCHINTERCELL BERMACCESS ROADCOVER CAP SYSTEM < 5% SLOPESSLOPE DIVERSION BERM - ALTERNATIVESLOPE DIVERSION BERM WITH DROP INLET-ALTERNATIVEPIPE COVER SECTIONSTANDARD DROP INLET
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:DETAILS
151-797 TASK 14
N.T.S.
MAY 2020 CTH
NTB
SLB99C503 GREENWAY WASTE SOLUTIONS OF APEX, LLC
C&D LANDFILL & COMPOST FACILITY
MAJOR PERMIT MODIFICATION APPLICATION
APEX, NORTH CAROLINANORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035SEEDING SCHEDULEwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]PASSIVE GAS VENT
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:DETAILS
151-797 TASK 14
N.T.S.
MAY 2020 CTH
NTB
SLB89C502 GREENWAY WASTE SOLUTIONS OF APEX, LLC
C&D LANDFILL & COMPOST FACILITY
MAJOR PERMIT MODIFICATION APPLICATION
APEX, NORTH CAROLINANORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035EDGE OF WASTE MARKERCOVER CAP SYSTEM > 5% SLOPESwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]PERIMETER DRAINAGE DITCHINTERCELL BERMACCESS ROADCOVER CAP SYSTEM < 5% SLOPESSLOPE DIVERSION BERM - ALTERNATIVESLOPE DIVERSION BERM WITH DROP INLET-ALTERNATIVEPIPE COVER SECTIONSTANDARD DROP INLET
8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:DETAILS
151-797 TASK 14
N.T.S.
MAY 2020 CTH
NTB
SLB99C503 GREENWAY WASTE SOLUTIONS OF APEX, LLC
C&D LANDFILL & COMPOST FACILITY
MAJOR PERMIT MODIFICATION APPLICATION
APEX, NORTH CAROLINANORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035SEEDING SCHEDULEwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]PASSIVE GAS VENT

APPENDIX C
ENGINEERING CALCULATIONS

STORMWATER AND EROSION CONTROL REPORT

Prepared For:

Union County Public Works
Wingate, NC

Prepared By:

CIVIL & ENVIRONMENTAL CONSULTANTS, INC.
CHARLOTTE, NORTH CAROLINA

CEC Project 151-797

MAY 2020

-i- Union County Minor Modification– Project 151-797
May 2020
TABLE OF CONTENTS
1.0 UNION COUNTY PERMIT MOD CONSTRUCTION NARRATIVE .......................1
1.1 PROJECT DESCRIPTION ................................................................................... 1
1.2 SITE DESCRIPTION ............................................................................................ 1
1.3 ADJACENT PROPERTY ..................................................................................... 1
1.4 SOILS ..................................................................................................................... 1
2.0 PLANNED EROSION CONTROL PRACTICES .......................................................2
2.1 TEMPORARY SEDIMENT BASINs ................................................................... 2
2.2 TEMPORARY DIVERSION ................................................................................ 2
2.3 LAND GRADING ................................................................................................. 2
2.4 SURFACE STABILIZATION .............................................................................. 2
2.5 RIP-RAP CHECK DAM ....................................................................................... 3
3.0 PERMANENT STORMWATER MEASURES ............................................................4
3.1 PROPOSED STORMWATER SYSTEM .............................................................. 4

-1- Union County Minor Modification
May 2020
1.0 UNION COUNTY PERMIT MOD CONSTRUCTION NARRATIVE

1.1 PROJECT DESCRIPTION

The Union County Construction & Demolition (C&D) Landfill is located at 2125 Austin Chaney
Road near Wingate. C&D Landfills dispose of solid waste generated from the construction,
remodeling, repair or demolition of buildings, structures and roads. The current site has been
operated by Union County since 1972. Prior to December 31, 1997 municipal solid waste
(garbage) was disposed of on site. Since January 1, 1998 only C&D waste is disposed of on site.
The site will serve as a Landfill Expansion Area for Class Two landfill of the Union County Solid
Waste Facility. Site construction will include clearing and grubbing, modification of an existing
Sediment Basin (SB-1), C&D minor modification landfill expansion construction grading,
perimeter grading, import and placement of soil material. Final stabilization will establish natural
vegetation within the site.

1.2 SITE DESCRIPTION

The site is approximately 175.2 acres of which 26.5 are designated for the disposal of C&D waste.
The facility is permitted as a C&D (construction and demolition waste) and existing MSW
(municipal solid waste) landfill. The facility is also permitted as a Large Type 1 Solid waste
Compost and Reprocessing Facility Permit Number 90-05T. The immediate surrounding area is
wooded. The site, latitude N35°2’12” and longitude W80°27’36.43”, is situated in Union County,
North Carolina.

1.3 ADJACENT PROPERTY

The land use in the vicinity is mainly developed with majority of the land being wooded.

1.4 SOILS

The project site soil is described as primarily (Ud) Udorthents, loamy. The soils are in the
Hydrology Group B, see Soil Data section in Attachment A of this report.

-2- Union County Minor Modification
May 2020
2.0 PLANNED EROSION CONTROL PRACTICES

2.1 TEMPORARY SEDIMENT BASINS

Sediment Basin SB-1 will be modified and diversion ditches will be installed prior to the initiation
of land disturbance. Runoff from disturbed areas will be directed to existing sediment basins and
sediment traps using appropriate conveyance measures.

2.2 TEMPORARY DIVERSION

Temporary diversions will be constructed to divert flow and sediment from disturbed areas
to Sediment Basin SB-1. Diversion ditches will be adjusted as cut/fill operation progresses.

2.3 LAND GRADING

Initial grading activities will not begin until sediment controls are implemented. Sediment controls
are as follows but not limited to: (Sediment Basin SB-1, existing sediment basins and traps,
sediment diversion ditches, silt fence etc.) Once sediment controls have been implemented land
disturbing/grading activates will begin. The site improvements will be constructed on cut and fill
areas. Excess material from the borrow area grading will be utilized within the C&D Overlay
Expansion area construction.

Fill slopes will typically be 3 (horizontal):1 (vertical). Fill will be placed in layers not to exceed 8
inches in depth and compacted. Four to six inches (4”-6”) of the fill surface will be left in loose
condition and groomed on the contour before seeding. Filling will be done as a continuous
operation until final grade is reached. Berms and temporary diversions at top of fill slopes will be
maintained daily. There will be no cut slopes on site.

2.4 SURFACE STABILIZATION

-3- Union County Minor Modification
May 2020
Surface stabilization will be accomplished with vegetation and mulch as specified in the seeding
specifications.

2.5 RIP-RAP CHECK DAM

Small rip-rap check dams will be constructed in diversion ditches at various points on the project.
The check dams shall be maintained during the construction period.

-4- Union County Minor Modification
May 2020
3.0 PERMANENT STORMWATER MEASURES

3.1 PROPOSED STORMWATER SYSTEM

This project is limited to clearing, grubbing, grading and filling operations on the site. No new
impervious area is proposed. An existing sediment basin (SB-1) with conveyance to the sediment
basin will be modified to capture runoff during filling operations. Runoff from disturbed areas
will be directed to existing sediment basins and sediment traps using appropriate conveyance
measures. Upon completion of filling operations, the site will be seeded in accordance with the
Stormwater General Permit. Once the site has been stabilized, Sediment Basin other existing
basins will remain for permanent stormwater control. For the proposed modified Sediment Basin
(SB-1) outfall, Hydrology analysis using TR-55 Tables provided a curve number of 66 for pre-
developed area, and a curve number of 86 for post-developed disturbed area. Rainfall depth data
was used from NOAA. The analysis demonstrates that pre-development peak discharge will
decrease for the 25-year 24-hour storm event (see Table 1 below).

TABLE 1. SUMMARY OF PRE/POST PEAK DISCHARGES
ANALYSIS POINT – SEDIMENT BASIN (SB-1) OUTFALL
Pre Development
(cfs) Post-Development (cfs)
25-YEAR 79.75 1.32

The post-developed discharge from both the 25-year 24-hour storm event meets NCDEQ
requirements. The site outfalls to the existing Richardson Creek. Riprap dissipaters in conjunction
with NA Green Matting and riprap lined channels are used to reduce flow velocities. Furthermore,
after the stormwater runoff has exited the riprap dissipaters, it will flow through undisturbed
existing vegetated areas, further decreasing the velocity before entering surface waters adjacent to
the site.

STORMWATER CALCULATIONS

Soil Map—Union County, North Carolina
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
5/19/2020
Page 1 of 338763003876500387670038769003877100387730038775003877700387790038765003876700387690038771003877300387750038777003877900547600547800548000548200548400548600548800549000549200549400549600549800550000
547600 547800 548000 548200 548400 548600 548800 549000 549200 549400 549600 549800 550000
35° 2' 35'' N 80° 28' 43'' W35° 2' 35'' N80° 27' 3'' W35° 1' 41'' N
80° 28' 43'' W35° 1' 41'' N
80° 27' 3'' WN
Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 17N WGS84
0 500 1000 2000 3000
Feet
0 150 300 600 900
Meters
Map Scale: 1:11,700 if printed on A landscape (11" x 8.5") sheet.
Soil Map may not be valid at this scale.
MAP LEGEND MAP INFORMATION
Area of Interest (AOI)
Area of Interest (AOI)
Soils
Soil Map Unit Polygons
Soil Map Unit Lines
Soil Map Unit Points
Special Point Features
Blowout
Borrow Pit
Clay Spot
Closed Depression
Gravel Pit
Gravelly Spot
Landfill
Lava Flow
Marsh or swamp
Mine or Quarry
Miscellaneous Water
Perennial Water
Rock Outcrop
Saline Spot
Sandy Spot
Severely Eroded Spot
Sinkhole
Slide or Slip
Sodic Spot
Spoil Area
Stony Spot
Very Stony Spot
Wet Spot
Other
Special Line Features
Water Features
Streams and Canals
Transportation
Rails
Interstate Highways
US Routes
Major Roads
Local Roads
Background
Aerial Photography
The soil surveys that comprise your AOI were mapped at
1:24,000.
Warning: Soil Map may not be valid at this scale.
Enlargement of maps beyond the scale of mapping can cause
misunderstanding of the detail of mapping and accuracy of soil
line placement. The maps do not show the small areas of
contrasting soils that could have been shown at a more detailed
scale.
Please rely on the bar scale on each map sheet for map
measurements.
Source of Map: Natural Resources Conservation Service
Web Soil Survey URL:
Coordinate System: Web Mercator (EPSG:3857)
Maps from the Web Soil Survey are based on the Web Mercator
projection, which preserves direction and shape but distorts
distance and area. A projection that preserves area, such as the
Albers equal-area conic projection, should be used if more
accurate calculations of distance or area are required.
This product is generated from the USDA-NRCS certified data as
of the version date(s) listed below.
Soil Survey Area: Union County, North Carolina
Survey Area Data: Version 19, Sep 16, 2019
Soil map units are labeled (as space allows) for map scales
1:50,000 or larger.
Date(s) aerial images were photographed: Jul 18, 2011—Nov
25, 2017
The orthophoto or other base map on which the soil lines were
compiled and digitized probably differs from the background
imagery displayed on these maps. As a result, some minor
shifting of map unit boundaries may be evident.
Soil Map—Union County, North Carolina
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
5/19/2020
Page 2 of 3
Map Unit Legend
Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI
BaB Badin channery silt loam, 2 to
8 percent slopes
6.7 1.2%
BdB2 Badin channery silty clay loam,
2 to 8 percent slopes,
moderately eroded
119.6 21.7%
BdC2 Badin channery silty clay loam,
8 to 15 percent slopes,
moderately eroded
43.2 7.8%
ChA Chewacla silt loam, 0 to 2
percent slopes, frequently
flooded
68.7 12.5%
CmB Cid channery silt loam, 1 to 5
percent slopes
38.9 7.1%
GoC Goldston very channery silt
loam, 4 to 15 percent slopes
14.6 2.7%
GoE Goldston very channery silt
loam, 15 to 45 percent
slopes
64.1 11.6%
GsB Goldston-Badin complex, 2 to
8 percent slopes
12.8 2.3%
GsC Goldston-Badin complex, 8 to
15 percent slopes
50.1 9.1%
TbB2 Tarrus gravelly silty clay loam,
2 to 8 percent slopes,
moderately eroded
50.0 9.1%
Ud Udorthents, loamy 66.4 12.0%
W Water 16.3 3.0%
Totals for Area of Interest 551.4 100.0%
Soil Map—Union County, North Carolina
Natural Resources
Conservation Service
Web Soil Survey
National Cooperative Soil Survey
5/19/2020
Page 3 of 3
NOAA Atlas 14, Volume 2, Version 3
Location name: Monroe, North Carolina, USA*
Latitude: 35.0908°, Longitude: -80.4391°
Elevation: 539.95 ft**
* source: ESRI Maps
** source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland
PF_tabular | PF_graphical | Maps_&_aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1
Duration Average recurrence interval (years)
1 2 5 10 25 50 100 200 500 1000
5-min 0.419
(0.386-0.456)
0.495
(0.455-0.540)
0.575
(0.527-0.626)
0.633
(0.579-0.687)
0.699
(0.637-0.758)
0.744
(0.675-0.806)
0.784
(0.708-0.850)
0.821
(0.738-0.891)
0.862
(0.767-0.937)
0.891
(0.787-0.970)
10-min 0.670
(0.616-0.728)
0.791
(0.727-0.863)
0.921
(0.844-1.00)
1.01
(0.926-1.10)
1.11
(1.01-1.21)
1.18
(1.08-1.28)
1.25
(1.13-1.35)
1.30
(1.17-1.41)
1.36
(1.21-1.48)
1.40
(1.24-1.53)
15-min 0.837
(0.770-0.910)
0.995
(0.914-1.09)
1.16
(1.07-1.27)
1.28
(1.17-1.39)
1.41
(1.29-1.53)
1.50
(1.36-1.63)
1.58
(1.42-1.71)
1.64
(1.48-1.78)
1.72
(1.53-1.87)
1.76
(1.56-1.92)
30-min 1.15
(1.06-1.25)
1.37
(1.26-1.50)
1.65
(1.52-1.80)
1.86
(1.70-2.01)
2.09
(1.91-2.27)
2.26
(2.05-2.45)
2.41
(2.18-2.62)
2.56
(2.30-2.77)
2.73
(2.43-2.97)
2.85
(2.52-3.11)
60-min 1.43
(1.32-1.56)
1.72
(1.58-1.88)
2.12
(1.94-2.31)
2.42
(2.21-2.62)
2.78
(2.54-3.02)
3.06
(2.78-3.32)
3.32
(3.00-3.60)
3.59
(3.22-3.89)
3.92
(3.49-4.26)
4.16
(3.68-4.53)
2-hr 1.66
(1.52-1.81)
2.00
(1.83-2.19)
2.48
(2.27-2.72)
2.85
(2.60-3.11)
3.32
(3.01-3.62)
3.67
(3.32-4.00)
4.03
(3.62-4.39)
4.38
(3.91-4.77)
4.83
(4.27-5.27)
5.18
(4.54-5.66)
3-hr 1.76
(1.61-1.94)
2.13
(1.95-2.34)
2.66
(2.42-2.92)
3.06
(2.79-3.36)
3.61
(3.27-3.95)
4.04
(3.64-4.41)
4.47
(4.00-4.88)
4.92
(4.36-5.36)
5.52
(4.83-6.03)
6.00
(5.20-6.55)
6-hr 2.12
(1.94-2.33)
2.56
(2.34-2.81)
3.19
(2.92-3.50)
3.69
(3.36-4.04)
4.37
(3.95-4.76)
4.90
(4.41-5.34)
5.45
(4.87-5.93)
6.01
(5.32-6.54)
6.79
(5.93-7.38)
7.40
(6.38-8.05)
12-hr 2.51
(2.30-2.75)
3.03
(2.78-3.34)
3.80
(3.48-4.17)
4.42
(4.03-4.84)
5.26
(4.76-5.75)
5.95
(5.34-6.49)
6.66
(5.92-7.25)
7.40
(6.51-8.05)
8.44
(7.31-9.17)
9.28
(7.92-10.1)
24-hr 2.98
(2.74-3.23)
3.59
(3.32-3.90)
4.51
(4.16-4.90)
5.24
(4.82-5.70)
6.26
(5.73-6.79)
7.07
(6.45-7.68)
7.92
(7.19-8.60)
8.80
(7.96-9.56)
10.0
(9.02-10.9)
11.0
(9.86-12.0)
2-day 3.50
(3.23-3.79)
4.21
(3.90-4.58)
5.26
(4.86-5.71)
6.09
(5.61-6.60)
7.23
(6.64-7.84)
8.15
(7.46-8.84)
9.11
(8.31-9.88)
10.1
(9.17-11.0)
11.5
(10.4-12.5)
12.6
(11.3-13.8)
3-day 3.71
(3.43-4.01)
4.46
(4.13-4.82)
5.53
(5.11-5.99)
6.39
(5.89-6.91)
7.57
(6.96-8.18)
8.52
(7.80-9.21)
9.50
(8.68-10.3)
10.5
(9.57-11.4)
12.0
(10.8-13.0)
13.1
(11.8-14.3)
4-day 3.92
(3.63-4.22)
4.70
(4.36-5.07)
5.80
(5.37-6.27)
6.68
(6.17-7.21)
7.90
(7.27-8.53)
8.88
(8.15-9.59)
9.89
(9.05-10.7)
10.9
(9.98-11.8)
12.4
(11.3-13.5)
13.6
(12.3-14.8)
7-day 4.51
(4.22-4.84)
5.39
(5.04-5.78)
6.57
(6.14-7.05)
7.51
(7.01-8.06)
8.81
(8.19-9.46)
9.86
(9.13-10.6)
10.9
(10.1-11.8)
12.0
(11.1-13.0)
13.6
(12.5-14.7)
14.9
(13.6-16.1)
10-day 5.20
(4.88-5.55)
6.19
(5.79-6.60)
7.45
(6.97-7.94)
8.44
(7.89-9.00)
9.78
(9.12-10.4)
10.8
(10.1-11.6)
11.9
(11.1-12.7)
13.0
(12.0-13.9)
14.5
(13.4-15.6)
15.7
(14.5-16.9)
20-day 6.98
(6.59-7.40)
8.24
(7.77-8.74)
9.73
(9.17-10.3)
10.9
(10.3-11.6)
12.5
(11.8-13.3)
13.8
(12.9-14.6)
15.0
(14.1-16.0)
16.3
(15.2-17.4)
18.1
(16.8-19.3)
19.5
(18.0-20.8)
30-day 8.57
(8.10-9.06)
10.1
(9.54-10.7)
11.7
(11.1-12.4)
13.0
(12.3-13.8)
14.7
(13.9-15.5)
16.0
(15.0-16.9)
17.3
(16.2-18.3)
18.6
(17.4-19.7)
20.3
(18.9-21.6)
21.6
(20.1-23.1)
45-day 10.8
(10.3-11.4)
12.7
(12.0-13.3)
14.5
(13.7-15.2)
15.9
(15.1-16.7)
17.7
(16.8-18.6)
19.1
(18.1-20.1)
20.5
(19.3-21.5)
21.8
(20.5-22.9)
23.5
(22.1-24.8)
24.9
(23.3-26.3)
60-day 12.9
(12.3-13.5)
15.1
(14.4-15.7)
17.0
(16.2-17.8)
18.6
(17.7-19.4)
20.5
(19.5-21.5)
22.0
(20.9-23.1)
23.4
(22.2-24.6)
24.8
(23.5-26.1)
26.7
(25.2-28.0)
28.0
(26.4-29.5)
1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates
(for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds
are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values.
Please refer to NOAA Atlas 14 document for more information.
Back to Top
Page 1 of 4Precipitation Frequency Data Server
3/23/2020https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=35.0908&lon=-80.4391&dat...
NOAA Atlas 14, Volume 2, Version 3
Location name: Monroe, North Carolina, USA*
Latitude: 35.0908°, Longitude: -80.4391°
Elevation: 539.95 ft**
* source: ESRI Maps
** source: USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
G.M. Bonnin, D. Martin, B. Lin, T. Parzybok, M.Yekta, and D. Riley
NOAA, National Weather Service, Silver Spring, Maryland
PF_tabular | PF_graphical | Maps_&_aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches/hour)1
Duration Average recurrence interval (years)
1 2 5 10 25 50 100 200 500 1000
5-min 5.03
(4.63-5.47)
5.94
(5.46-6.48)
6.90
(6.32-7.51)
7.60
(6.95-8.24)
8.39
(7.64-9.10)
8.93
(8.10-9.67)
9.41
(8.50-10.2)
9.85
(8.86-10.7)
10.3
(9.20-11.2)
10.7
(9.44-11.6)
10-min 4.02
(3.70-4.37)
4.75
(4.36-5.18)
5.53
(5.06-6.02)
6.07
(5.56-6.59)
6.68
(6.08-7.24)
7.10
(6.45-7.70)
7.48
(6.76-8.11)
7.81
(7.01-8.47)
8.18
(7.28-8.89)
8.42
(7.44-9.17)
15-min 3.35
(3.08-3.64)
3.98
(3.66-4.34)
4.66
(4.27-5.08)
5.12
(4.68-5.56)
5.64
(5.14-6.12)
6.00
(5.44-6.50)
6.30
(5.69-6.83)
6.57
(5.90-7.13)
6.86
(6.11-7.46)
7.04
(6.22-7.67)
30-min 2.30
(2.11-2.50)
2.75
(2.52-3.00)
3.31
(3.03-3.61)
3.71
(3.39-4.03)
4.18
(3.81-4.53)
4.52
(4.10-4.90)
4.83
(4.36-5.23)
5.11
(4.59-5.55)
5.46
(4.86-5.93)
5.70
(5.04-6.21)
60-min 1.43
(1.32-1.56)
1.72
(1.58-1.88)
2.12
(1.94-2.31)
2.42
(2.21-2.62)
2.78
(2.54-3.02)
3.06
(2.78-3.32)
3.32
(3.00-3.60)
3.59
(3.22-3.89)
3.92
(3.49-4.26)
4.16
(3.68-4.53)
2-hr 0.828
(0.759-0.906)
1.00
(0.917-1.10)
1.24
(1.14-1.36)
1.42
(1.30-1.56)
1.66
(1.51-1.81)
1.84
(1.66-2.00)
2.02
(1.81-2.19)
2.19
(1.95-2.38)
2.42
(2.13-2.64)
2.59
(2.27-2.83)
3-hr 0.587
(0.536-0.645)
0.708
(0.648-0.780)
0.884
(0.807-0.972)
1.02
(0.928-1.12)
1.20
(1.09-1.32)
1.35
(1.21-1.47)
1.49
(1.33-1.62)
1.64
(1.45-1.79)
1.84
(1.61-2.01)
2.00
(1.73-2.18)
6-hr 0.354
(0.324-0.389)
0.427
(0.391-0.469)
0.533
(0.487-0.585)
0.616
(0.561-0.675)
0.729
(0.660-0.795)
0.819
(0.736-0.891)
0.910
(0.813-0.990)
1.00
(0.888-1.09)
1.13
(0.990-1.23)
1.24
(1.07-1.34)
12-hr 0.208
(0.191-0.228)
0.251
(0.231-0.277)
0.315
(0.289-0.346)
0.366
(0.334-0.402)
0.437
(0.395-0.477)
0.494
(0.443-0.538)
0.553
(0.492-0.602)
0.614
(0.540-0.668)
0.700
(0.606-0.761)
0.770
(0.657-0.838)
24-hr 0.124
(0.114-0.135)
0.150
(0.138-0.163)
0.188
(0.173-0.204)
0.219
(0.201-0.237)
0.261
(0.239-0.283)
0.295
(0.269-0.320)
0.330
(0.300-0.358)
0.367
(0.332-0.399)
0.418
(0.376-0.455)
0.459
(0.411-0.500)
2-day 0.073
(0.067-0.079)
0.088
(0.081-0.095)
0.110
(0.101-0.119)
0.127
(0.117-0.137)
0.151
(0.138-0.163)
0.170
(0.155-0.184)
0.190
(0.173-0.206)
0.210
(0.191-0.229)
0.239
(0.216-0.261)
0.262
(0.235-0.287)
3-day 0.052
(0.048-0.056)
0.062
(0.057-0.067)
0.077
(0.071-0.083)
0.089
(0.082-0.096)
0.105
(0.097-0.114)
0.118
(0.108-0.128)
0.132
(0.121-0.143)
0.146
(0.133-0.158)
0.166
(0.150-0.180)
0.182
(0.164-0.198)
4-day 0.041
(0.038-0.044)
0.049
(0.045-0.053)
0.060
(0.056-0.065)
0.070
(0.064-0.075)
0.082
(0.076-0.089)
0.093
(0.085-0.100)
0.103
(0.094-0.111)
0.114
(0.104-0.123)
0.129
(0.117-0.140)
0.142
(0.128-0.154)
7-day 0.027
(0.025-0.029)
0.032
(0.030-0.034)
0.039
(0.037-0.042)
0.045
(0.042-0.048)
0.052
(0.049-0.056)
0.059
(0.054-0.063)
0.065
(0.060-0.070)
0.072
(0.066-0.077)
0.081
(0.074-0.087)
0.089
(0.081-0.096)
10-day 0.022
(0.020-0.023)
0.026
(0.024-0.027)
0.031
(0.029-0.033)
0.035
(0.033-0.037)
0.041
(0.038-0.043)
0.045
(0.042-0.048)
0.050
(0.046-0.053)
0.054
(0.050-0.058)
0.060
(0.056-0.065)
0.066
(0.060-0.070)
20-day 0.015
(0.014-0.015)
0.017
(0.016-0.018)
0.020
(0.019-0.022)
0.023
(0.021-0.024)
0.026
(0.024-0.028)
0.029
(0.027-0.030)
0.031
(0.029-0.033)
0.034
(0.032-0.036)
0.038
(0.035-0.040)
0.041
(0.038-0.043)
30-day 0.012
(0.011-0.013)
0.014
(0.013-0.015)
0.016
(0.015-0.017)
0.018
(0.017-0.019)
0.020
(0.019-0.022)
0.022
(0.021-0.023)
0.024
(0.023-0.025)
0.026
(0.024-0.027)
0.028
(0.026-0.030)
0.030
(0.028-0.032)
45-day 0.010
(0.010-0.011)
0.012
(0.011-0.012)
0.013
(0.013-0.014)
0.015
(0.014-0.015)
0.016
(0.016-0.017)
0.018
(0.017-0.019)
0.019
(0.018-0.020)
0.020
(0.019-0.021)
0.022
(0.020-0.023)
0.023
(0.022-0.024)
60-day 0.009
(0.009-0.009)
0.010
(0.010-0.011)
0.012
(0.011-0.012)
0.013
(0.012-0.013)
0.014
(0.014-0.015)
0.015
(0.015-0.016)
0.016
(0.015-0.017)
0.017
(0.016-0.018)
0.019
(0.017-0.019)
0.019
(0.018-0.021)
1 Precipitation frequency (PF) estimates in this table are based on frequency analysis of partial duration series (PDS).
Numbers in parenthesis are PF estimates at lower and upper bounds of the 90% confidence interval. The probability that precipitation frequency estimates
(for a given duration and average recurrence interval) will be greater than the upper bound (or less than the lower bound) is 5%. Estimates at upper bounds
are not checked against probable maximum precipitation (PMP) estimates and may be higher than currently valid PMP values.
Please refer to NOAA Atlas 14 document for more information.
Back to Top
Page 1 of 4Precipitation Frequency Data Server
3/23/2020https://hdsc.nws.noaa.gov/hdsc/pfds/pfds_printpage.html?lat=35.0908&lon=-80.4391&dat...

DRAINAGE AREAS

8AB3456712CDEFGH83456712ABCDEFGHDESCRIPTIONDATENO
REVISION RECORD
DATE:
DWG SCALE:
DRAWN BY:
CHECKED BY:
APPROVED BY:
PROJECT NO:SHEETOFDRAWING NO.:DRAINAGE AREA MAP
151-797 TASK 14
1"= 60'
MAY 2020 CTH
NTB
SLB NORTHNORTH CAROLINABOARD OF EXAMINERSFOR ENGINEERS ANDSURVEYORS LICENSENO. C-3035LEGENDwww.cecinc.com
3701 Arco Corporate Drive · Suite 400 · Charlotte, NC 28273
Ph: 980.237.0373 · Fax: [phone]
UNION COUNTY PUBLIC WORKS
UNION COUNTY LANDFILL MINOR MODIFICATION
2125 AUSTIN CHANEY ROAD
WINGATE, NCREFERENCE

DOWNCHUTES

Civil & Environmental Consultants, Inc.
By:CTH
Project Name:Union County Landfill Minor Modification Date:5/2020
CEC Project No.:151-797 Checked By:NTB
Description:25-Year Stormwater Downchute Calculations Date:
Downchute #4 4.10 0.60 5.0 8.39 20.64
2' Diameter Pipe
Total Flow (cfs)20.64
Rational Runoff
Perimeter Ditch Composite C
Area
(acres)
Flow, Q
(cfs)
Intensity, I
(in/hr)
Time of
Concentration, Tc
(min)
Channel Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Tuesday, May 19 2020
Downchute #4
Circular
Diameter (ft) = 2.00
Invert Elev (ft) = 500.00
Slope (%) = 33.33
N-Value = 0.011
Calculations
Compute by: Known Q
Known Q (cfs) = 20.64
Highlighted
Depth (ft) = 0.50
Q (cfs) = 20.64
Area (sqft) = 0.62
Velocity (ft/s) = 33.38
Wetted Perim (ft) = 2.10
Crit Depth, Yc (ft) = 1.63
Top Width (ft) = 1.73
EGL (ft) = 17.82
0 1 2 3 4
Elev (ft)Depth (ft)Section
499.50 -0.50
500.00 0.00
500.50 0.50
501.00 1.00
501.50 1.50
502.00 2.00
502.50 2.50
503.00 3.00
Reach (ft)
Civil & Environmental Consultants, Inc.
By:CTH
Project Name:Union County Landfill Minor Modification Date:5/2020
CEC Project No.:151-797 Checked By:NTB
Description:25-Year Stormwater Ditch Calculations Date:
Perimeter Road Ditch 5.53 0.60 5.0 8.39 27.84
2' Deep V-Ditch
Worst Case Scenario Area Total Flow (cfs) 27.84
Tack-On Ditch 1.53 0.60 5.0 8.39 7.70
2' Deep 2' Bottom Trapazoidal Ditch
Worst Case Scenario Area Total Flow (cfs) 7.70
Access Road Ditch 1.10 0.60 5.0 8.39 5.54
1' Deep V-Ditch
Worst Case Scenario Area Total Flow (cfs)5.54
Rational Runoff
Perimeter Ditch Composite C
Area
(acres)
Flow, Q
(cfs)
Intensity, I
(in/hr)
Time of
Concentration, Tc
(min)
Channel Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Tuesday, May 26 2020
PERIMETER ROAD DITCH
Triangular
Side Slopes (z:1) = 2.00, 2.00
Total Depth (ft) = 2.50
Invert Elev (ft) = 520.00
Slope (%) = 2.00
N-Value = 0.052
Calculations
Compute by: Known Q
Known Q (cfs) = 27.84
Highlighted
Depth (ft) = 1.95
Q (cfs) = 27.84
Area (sqft) = 7.60
Velocity (ft/s) = 3.66
Wetted Perim (ft) = 8.72
Crit Depth, Yc (ft) = 1.65
Top Width (ft) = 7.80
EGL (ft) = 2.16
0 1 2 3 4 5 6 7 8 9 10 11 12
Elev (ft)Depth (ft)Section
519.50 -0.50
520.00 0.00
520.50 0.50
521.00 1.00
521.50 1.50
522.00 2.00
522.50 2.50
523.00 3.00
Reach (ft)
North American Green
5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
> > >Perimeter Road Ditch
Name Perimeter Road Ditch
Discharge 27.84
Peak Flow Period 0.083
Channel Slope 0.015
Channel Bottom Width 0
Left Side Slope 3
Right Side Slope 3
Low Flow Liner
Retardence Class C 6-12 in
Vegetation Type Mix (Sod and Bunch)
Vegetation Density Fair 50-75%
Soil Type Clay Loam (CL)
SC150
Phase Reach Discharge Velocity
Normal
Depth Mannings N Permissable
Shear Stress
Calculated
Shear Stress
Safety
Factor Remarks Staple
Pattern
SC150
Unvegetated
Straight 27.84 cfs 3.82 ft/s 1.56 ft 0.039 2 lbs/ft2 1.46 lbs/ft2 1.37 STABLE D
Underlying
Substrate
Straight 27.84 cfs 3.82 ft/s 1.56 ft 0.039 2.18 lbs/ft2 0.69 lbs/ft2 3.16 STABLE D
Unreinforced Vegetation
Phase Reach Discharge Velocity
Normal
Depth Mannings N Permissable
Shear Stress
Calculated
Shear Stress
Safety
Factor Remarks Staple
Pattern
Unreinforced
Vegetation
Straight 27.84 cfs 3.08 ft/s 1.74 ft 0.052 4 lbs/ft2 1.63 lbs/ft2 2.46 STABLE --
Underlying
Substrate
Straight 27.84 cfs 3.08 ft/s 1.74 ft 0.052 5.07 lbs/ft2 0.77 lbs/ft2 6.57 STABLE --
Page 1 of 1ECMDS 7.0
5/26/2020https://ecmds.com/project/144217/channel-analysis/183831/show
Channel Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.Tuesday, May 19 2020
TACK-ON DITCH
Triangular
Side Slopes (z:1) = 2.00, 3.00
Total Depth (ft) = 1.50
Invert Elev (ft) = 520.00
Slope (%) = 2.00
N-Value = 0.056
Calculations
Compute by: Known Q
Known Q (cfs) = 7.70
Highlighted
Depth (ft) = 1.13
Q (cfs) = 7.700
Area (sqft) = 3.19
Velocity (ft/s) = 2.41
Wetted Perim (ft) = 6.10
Crit Depth, Yc (ft) = 0.90
Top Width (ft) = 5.65
EGL (ft) = 1.22
0 1 2 3 4 5 6 7 8 9 10
Elev (ft)Depth (ft)Section
519.50 -0.50
520.00 0.00
520.50 0.50
521.00 1.00
521.50 1.50
522.00 2.00
Reach (ft)
North American Green
5401 St. Wendel-Cynthiana Rd.
Poseyville, Indiana 47633
Tel. [phone]
>Fax [phone]
www.nagreen.com
ECMDS v7.0
CHANNEL ANALYSIS
> > >Tack-On Ditch
Name Tack-On Ditch
Discharge 7.7
Peak Flow Period 0.083
Channel Slope 0.02
Channel Bottom Width 0
Left Side Slope 2
Right Side Slope 3
Low Flow Liner
Retardence Class C 6-12 in
Vegetation Type Mix (Sod and Bunch)
Vegetation Density Fair 50-75%
Soil Type Clay Loam (CL)
Unreinforced Vegetation
Phase Reach Discharge Velocity
Normal
Depth Mannings N Permissable
Shear Stress
Calculated
Shear Stress
Safety
Factor Remarks Staple
Pattern
Unreinforced
Vegetation
Straight 7.7 cfs 2.44 ft/s 1.12 ft 0.056 4 lbs/ft2 1.4 lbs/ft2 2.85 STABLE --
Underlying
Substrate
Straight 7.7 cfs 2.44 ft/s 1.12 ft 0.056 5.82 lbs/ft2 0.65 lbs/ft2 8.97 STABLE --
Page 1 of 1ECMDS 7.0
5/19/2020https://ecmds.com/project/144217/channel-analysis/183832/show

SEDIMENT BASIN CALCULATIONS

CIVIL & ENVIRONMENTAL CONSULTANTS, INC.By:CTH
Project Name:Union County Minor Permit Modification Date:5/13/2020
CEC Project No.:151-797 Checked By:
Description:EXISTING SEDIMENT BASIN SB-1 Date:
NORTH CAROLINA STORMWATER DESIGN Input
6.61.1 SEDIMENT BASIN DESIGN (SEE DIAGRAM BELOW)Calculation
Reference
GOVERNING REVIEW AGENCY Union County
TOTAL DRAINAGE AREA 11.50 Do Not Use
Do Not Use
Okay
RAINFALL INTENSITIES (in/hr) 5.94 2-yr
7.60 10-yr
8.39 25-yr
0.00 0.0000 0%
0.00 0.0000 0%
0.00 0.0000 0%
0.60 11.5000 100%
Composite Runoff Coefficient 0.60
Sediment Basin 6 (10-yr Rational Runoff)11.50 0.6000 5.0 7.60 52.44
Sediment Basin 6 (2-yr Rational Runoff)11.50 0.6000 5.0 5.94 40.99
Sediment Basin 6 (25-yr Rational Runoff)11.50 0.6000 5.0 8.39 57.89
Total 25 yr Flow to Sediment Basin (cfs) 57.89
Sediment Basin 6 (25-yr Rational Runoff)11.50 435 25,182.59
Total REQUIRED Sediment Basin Area (sf) 25,183
Sediment Basin 6 (25-yr Rational Runoff) 11.50 1,800 20,700.00
Total REQUIRED Sediment Basin Volume (cubic feet) 20,700 65 Trial Weir Length ft
0.5 Trial Depth of Flow ft
64.34671709 Spillway Capacity cfs
Elevation Area Inc. Vol. Acc Vol.
508.00 13160 0 0
510.00 20746 33619 33,619
512.00 24753 45440 79,060
514.00 29050 53746 132,805 Riser Weir Elev. (Surface area is set at Riser Weir Elev)
516.00 33550 62546 195,351
Total PROVIDED Sediment Basin Volume (cubic feet)132,805 OKAY
Total PROVIDED Sediment Basin Area (square feet)29,050 OKAY
2.5 Skimmer Size (Inches)(Inches)
0.208 Head on Skimmer (feet)
2.5 Orifice Size (1/4 inch increments)1.5
3.14Dewatering Time (days)* (REQUIRED VOLUME)2
Dewatering Time should be 2-5 days 2.5
3
Q of Skimmer 0.076209642 4
5
6
8
Riser Inside Dimensions (ft) - Circular Riser 3.00
Riser Inside Area (sf)9.42 Density of CMP (lbs/cf)61.00
Riser Outside Area (sf)9.42 Density of water (lbs/cf) 62.40
Riser Structure Height (ft)6.00
WEIGHT DISPLACE BY RISER (lbs)3,526.85
Area of Riser 9.42 Anchor Dimension (n x n) (ft)5.00
Riser Structure Height (ft)6.00 Anchor Thickness (ft)2.00
Volume of Riser concrete (cf)56.52 Anchor Area (sf)25.00
Net Displaced by the Riser (lbs/cf)-1.40 Anchor Volume (cf)50.00
WEIGHT OF THE HDPE RISER (lbs)-79.13 WEIGHT OF ANCHOR (lbs)3,050.00
WEIGHT OF RISER & ANCHOR vs WEIGHT DISPLACED BY RISER Revise Anchor Dimensions
PROVIDED VOLUME
SKIMMER ORIFICE SIZE
Total Volume
Required
(cubic feet)
Sediment Trap
REQUIRED VOLUME
Basin Disturbed Area
(acres)
Volume
Required
(ft/acre)
REQUIRED SURFACE AREA
Basin Drainage Area
(acres)
Area Required
(sf/cfs)
Total Area Required
(sf)
Taken from Table 2-2 Rainfall Intensities - NOAA Union
County NC)
2yr./10-yr. RATIONAL RUNOFF
Impervious Area
Wooded Area
Grassed Area (Lawns w/ slopes > 7%)
Disturbed area
Skimmer Basin
Sediment Basin
Area
(acres)
RATIONAL RUNOFF COEFFICIENT
C-value (Table
8.03b)Description of surface % of Area
Basin Composite CArea
(acres)
Flow, Q
(cfs)
Intensity, I
(in/hr)
Time of
Concentration, Tc
(min)
ANTI-FLOTATION ANCHOR
update area calculations for rectangular or circular riser structures
1 OF 1
Hydrograph Return Period Recap
1
Hyd. Hydrograph Inflow Peak Outflow (cfs)Hydrograph
No. type hyd(s)Description
(origin) 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
1 SCS Runoff ------ 26.49 35.96 ------- ------- 62.84 79.75 ------- 107.31 Sediment Basin SB-1
2 Reservoir 1 0.000 0.000 ------- ------- 0.000 1.324 ------- 6.469 Sediment Basin SB-1
Proj. file: Sediment Basin SB-1..gpw Tuesday, 05 / 26 / 2020
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020
Hydrograph Summary Report
2
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 26.49 2 718 53,353 ------ ------ ------ Sediment Basin SB-1
2 Reservoir 0.000 2 n/a 0 1 510.87 53,353 Sediment Basin SB-1
Sediment Basin SB-1..gpw Return Period: 1 Year Tuesday, 05 / 26 / 2020
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 1
Sediment Basin SB-1
Hydrograph type = SCS Runoff Peak discharge = 26.49 cfs
Storm frequency = 1 yrs Time to peak = 11.97 hrs
Time interval = 2 min Hyd. volume = 53,353 cuft
Drainage area = 11.500 ac Curve number = 82
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 2.98 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
3
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Q (cfs)
0.00 0.00
4.00 4.00
8.00 8.00
12.00 12.00
16.00 16.00
20.00 20.00
24.00 24.00
28.00 28.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 1 -- 1 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 2
Sediment Basin SB-1
Hydrograph type = Reservoir Peak discharge = 0.000 cfs
Storm frequency = 1 yrs Time to peak = n/a
Time interval = 2 min Hyd. volume = 0 cuft
Inflow hyd. No. = 1 - Sediment Basin SB-1 Max. Elevation = 510.87 ft
Reservoir name = Sediment Basin SB-1 Max. Storage = 53,353 cuft
Storage Indication method used.
4
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Q (cfs)
0.00 0.00
4.00 4.00
8.00 8.00
12.00 12.00
16.00 16.00
20.00 20.00
24.00 24.00
28.00 28.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 2 -- 1 Year
Hyd No. 2 Hyd No. 1 Total storage used = 53,353 cuft
Pond Report 5
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Pond No. 1 - Sediment Basin SB-1
Pond Data
Contours -User-defined contour areas. Conic method used for volume calculation. Begining Elevation = 508.00 ft
Stage / Storage Table
Stage (ft) Elevation (ft) Contour area (sqft) Incr. Storage (cuft) Total storage (cuft)
0.00 508.00 13,160 0 0
2.00 510.00 20,746 33,616 33,616
4.00 512.00 24,753 45,436 79,052
6.00 514.00 29,050 53,740 132,792
8.00 516.00 33,550 62,540 195,332
Culvert / Orifice Structures Weir Structures
[A] [B] [C] [PrfRsr] [A] [B] [C] [D]
Rise (in)= 30.00 0.00 0.00 0.00
Span (in)= 30.00 0.00 0.00 0.00
No. Barrels = 1 0 0 0
Invert El. (ft)= 508.00 0.00 0.00 0.00
Length (ft)= 67.00 0.00 0.00 0.00
Slope (%)= 6.00 0.00 0.00 n/a
N-Value = .013 .013 .013 n/a
Orifice Coeff.= 0.60 0.60 0.60 0.60
Multi-Stage = n/a No No No
Crest Len (ft)= 9.42 10.00 0.00 0.00
Crest El. (ft)= 514.00 515.00 0.00 0.00
Weir Coeff.= 3.33 2.60 3.33 3.33
Weir Type = 1 Broad --- ---
Multi-Stage = Yes No No No
Exfil.(in/hr)= 0.000 (by Contour)
TW Elev. (ft)= 0.00
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s).
0.00 7.00 14.00 21.00 28.00 35.00 42.00 49.00 56.00 63.00 70.00
Stage (ft)
0.00 508.00
2.00 510.00
4.00 512.00
6.00 514.00
8.00 516.00
Elev (ft)
Discharge (cfs)
Stage / Discharge
Total Q
Hydrograph Summary Report
6
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 35.96 2 716 72,682 ------ ------ ------ Sediment Basin SB-1
2 Reservoir 0.000 2 n/a 0 1 511.72 72,682 Sediment Basin SB-1
Sediment Basin SB-1..gpw Return Period: 2 Year Tuesday, 05 / 26 / 2020
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 1
Sediment Basin SB-1
Hydrograph type = SCS Runoff Peak discharge = 35.96 cfs
Storm frequency = 2 yrs Time to peak = 11.93 hrs
Time interval = 2 min Hyd. volume = 72,682 cuft
Drainage area = 11.500 ac Curve number = 82
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 3.59 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
7
0 2 4 6 8 10 12 14 16 18 20 22 24
Q (cfs)
0.00 0.00
10.00 10.00
20.00 20.00
30.00 30.00
40.00 40.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 1 -- 2 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 2
Sediment Basin SB-1
Hydrograph type = Reservoir Peak discharge = 0.000 cfs
Storm frequency = 2 yrs Time to peak = n/a
Time interval = 2 min Hyd. volume = 0 cuft
Inflow hyd. No. = 1 - Sediment Basin SB-1 Max. Elevation = 511.72 ft
Reservoir name = Sediment Basin SB-1 Max. Storage = 72,682 cuft
Storage Indication method used.
8
0 2 4 6 8 10 12 14 16 18 20 22 24
Q (cfs)
0.00 0.00
10.00 10.00
20.00 20.00
30.00 30.00
40.00 40.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 2 -- 2 Year
Hyd No. 2 Hyd No. 1 Total storage used = 72,682 cuft
Hydrograph Summary Report
9
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 62.84 2 716 128,937 ------ ------ ------ Sediment Basin SB-1
2 Reservoir 0.000 2 n/a 0 1 513.86 128,937 Sediment Basin SB-1
Sediment Basin SB-1..gpw Return Period: 10 Year Tuesday, 05 / 26 / 2020
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 1
Sediment Basin SB-1
Hydrograph type = SCS Runoff Peak discharge = 62.84 cfs
Storm frequency = 10 yrs Time to peak = 11.93 hrs
Time interval = 2 min Hyd. volume = 128,937 cuft
Drainage area = 11.500 ac Curve number = 82
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 5.24 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
10
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0
Q (cfs)
0.00 0.00
10.00 10.00
20.00 20.00
30.00 30.00
40.00 40.00
50.00 50.00
60.00 60.00
70.00 70.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 1 -- 10 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 2
Sediment Basin SB-1
Hydrograph type = Reservoir Peak discharge = 0.000 cfs
Storm frequency = 10 yrs Time to peak = n/a
Time interval = 2 min Hyd. volume = 0 cuft
Inflow hyd. No. = 1 - Sediment Basin SB-1 Max. Elevation = 513.86 ft
Reservoir name = Sediment Basin SB-1 Max. Storage = 128,937 cuft
Storage Indication method used.
11
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0
Q (cfs)
0.00 0.00
10.00 10.00
20.00 20.00
30.00 30.00
40.00 40.00
50.00 50.00
60.00 60.00
70.00 70.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 2 -- 10 Year
Hyd No. 2 Hyd No. 1 Total storage used = 128,937 cuft
Hydrograph Summary Report
12
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 79.75 2 716 165,426 ------ ------ ------ Sediment Basin SB-1
2 Reservoir 1.324 2 1004 32,632 1 514.09 135,742 Sediment Basin SB-1
Sediment Basin SB-1..gpw Return Period: 25 Year Tuesday, 05 / 26 / 2020
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 1
Sediment Basin SB-1
Hydrograph type = SCS Runoff Peak discharge = 79.75 cfs
Storm frequency = 25 yrs Time to peak = 11.93 hrs
Time interval = 2 min Hyd. volume = 165,426 cuft
Drainage area = 11.500 ac Curve number = 82
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 6.26 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
13
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0
Q (cfs)
0.00 0.00
10.00 10.00
20.00 20.00
30.00 30.00
40.00 40.00
50.00 50.00
60.00 60.00
70.00 70.00
80.00 80.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 1 -- 25 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 2
Sediment Basin SB-1
Hydrograph type = Reservoir Peak discharge = 1.324 cfs
Storm frequency = 25 yrs Time to peak = 16.73 hrs
Time interval = 2 min Hyd. volume = 32,632 cuft
Inflow hyd. No. = 1 - Sediment Basin SB-1 Max. Elevation = 514.09 ft
Reservoir name = Sediment Basin SB-1 Max. Storage = 135,742 cuft
Storage Indication method used.
14
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28
Q (cfs)
0.00 0.00
10.00 10.00
20.00 20.00
30.00 30.00
40.00 40.00
50.00 50.00
60.00 60.00
70.00 70.00
80.00 80.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 2 -- 25 Year
Hyd No. 2 Hyd No. 1 Total storage used = 135,742 cuft
Hydrograph Summary Report
15
Hyd. Hydrograph Peak Time Time to Hyd. Inflow Maximum Total Hydrograph
No. type flow interval Peak volume hyd(s) elevation strge used Description
(origin) (cfs) (min) (min) (cuft) (ft) (cuft)
1 SCS Runoff 107.31 2 716 226,356 ------ ------ ------ Sediment Basin SB-1
2 Reservoir 6.469 2 760 93,562 1 514.34 143,511 Sediment Basin SB-1
Sediment Basin SB-1..gpw Return Period: 100 Year Tuesday, 05 / 26 / 2020
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 1
Sediment Basin SB-1
Hydrograph type = SCS Runoff Peak discharge = 107.31 cfs
Storm frequency = 100 yrs Time to peak = 11.93 hrs
Time interval = 2 min Hyd. volume = 226,356 cuft
Drainage area = 11.500 ac Curve number = 82
Basin Slope = 0.0 % Hydraulic length = 0 ft
Tc method = User Time of conc. (Tc) = 5.00 min
Total precip. = 7.92 in Distribution = Type II
Storm duration = 24 hrs Shape factor = 484
16
0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0
Q (cfs)
0.00 0.00
20.00 20.00
40.00 40.00
60.00 60.00
80.00 80.00
100.00 100.00
120.00 120.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 1 -- 100 Year
Hyd No. 1
Hydrograph Report
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Hyd. No. 2
Sediment Basin SB-1
Hydrograph type = Reservoir Peak discharge = 6.469 cfs
Storm frequency = 100 yrs Time to peak = 12.67 hrs
Time interval = 2 min Hyd. volume = 93,562 cuft
Inflow hyd. No. = 1 - Sediment Basin SB-1 Max. Elevation = 514.34 ft
Reservoir name = Sediment Basin SB-1 Max. Storage = 143,511 cuft
Storage Indication method used.
17
0 2 4 6 8 10 12 14 16 18 20 22 24 26
Q (cfs)
0.00 0.00
20.00 20.00
40.00 40.00
60.00 60.00
80.00 80.00
100.00 100.00
120.00 120.00
Q (cfs)
Time (hrs)
Sediment Basin SB-1
Hyd. No. 2 -- 100 Year
Hyd No. 2 Hyd No. 1 Total storage used = 143,511 cuft
Hydraflow Rainfall Report
18
Hydraflow Hydrographs Extension for Autodesk® Civil 3D® 2019 by Autodesk, Inc. v2020 Tuesday, 05 / 26 / 2020
Return Intensity-Duration-Frequency Equation Coefficients (FHA)
Period
(Yrs) B D E (N/A)
1 60.8786 12.1000 0.8736 --------
2 76.1481 12.9000 0.8797 --------
3 0.0000 0.0000 0.0000 --------
5 76.5347 12.7000 0.8334 --------
10 74.9458 12.3000 0.7991 --------
25 65.6495 11.0000 0.7384 --------
50 61.2202 10.3000 0.7014 --------
100 53.7318 9.1000 0.6538 --------
File name: NOAA_MonroeNC_precip.IDF
Intensity = B / (Tc + D)^E
Return Intensity Values (in/hr)
Period
(Yrs) 5 min 10 15 20 25 30 35 40 45 50 55 60
1 5.10 4.07 3.41 2.94 2.59 2.32 2.10 1.93 1.78 1.65 1.54 1.45
2 6.02 4.85 4.07 3.52 3.11 2.79 2.53 2.32 2.14 1.99 1.86 1.75
3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
5 6.98 5.67 4.80 4.18 3.72 3.35 3.05 2.81 2.61 2.43 2.28 2.15
10 7.68 6.27 5.34 4.66 4.16 3.76 3.44 3.17 2.95 2.76 2.59 2.45
25 8.47 6.93 5.92 5.20 4.66 4.23 3.89 3.60 3.36 3.15 2.98 2.82
50 9.03 7.41 6.35 5.59 5.03 4.58 4.22 3.92 3.67 3.45 3.26 3.10
100 9.53 7.81 6.71 5.93 5.35 4.89 4.52 4.21 3.95 3.73 3.54 3.37
Tc = time in minutes. Values may exceed 60.
Rainfall Precipitation Table (in)
Precip. file name: Sample.pcp
Storm
Distribution 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
SCS 24-hour 2.98 3.59 0.00 5.50 5.24 6.26 8.50 7.92
SCS 6-Hr 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Huff-1st 0.00 0.00 0.00 2.75 0.00 0.00 6.50 0.00
Huff-2nd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Huff-3rd 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Huff-4th 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Huff-Indy 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Custom 0.00 0.00 0.00 2.80 0.00 0.00 6.00 0.00
Figure 8.06a: Design of outlet protection from a round pipe flowing full, minimum
tailwater condition (Tw<0.5 diameter)
DOWNCHUTE #4 OUTLET PROTECTION
Figure 8.06a: Design of outlet protection from a round pipe flowing full, minimum
tailwater condition (Tw<0.5 diameter)
PERIMETER ROAD DITCH OUTLET PROTECTION

APPENDIX D – FRANCHISE INFORMATION

500 North Main St., Suite 500 • Monroe, NC 28112-4730 • Phone: [phone] • Fax: [phone]
UNION COUNTY PUBLIC WORKS
Christie L. Putnam, P.E., Director
May 8, 2008

Daryl Walters
2322 Austin Chaney Road
Wingate, NC 28174

Subject: Union County C&D Landfill Public Meeting

Dear Mr. Walters,

You are receiving this letter because you own property that is adjacent to Union County’s Construction &
Demolition (C&D) Landfill. New State regulations require that Union County hold a public meeting to
discuss future operating plans for the C&D Landfill. The regulations also require that adjacent property
owners be notified of the meeting. Your attendance at the public meeting is not required.

The Union County Construction & Demolition (C&D) Landfill is located at 2125 Austin Chaney Road near
Wingate. C&D Landfills dispose of solid waste generated from the construction, remodeling, repair or
demolition of buildings, structures and roads. The current site has been operated by Union County since
1972. Prior to December 31, 1997 municipal solid waste (garbage) was disposed of on site. Since
January 1, 1998 only C&D waste is disposed of on site. There are currently no plans to change operating
procedures or schedules.

In accordance with Title 15A NCAC 13B.0536c (11C) Union County is holding a public meeting to inform
the community of proposed waste management activities for the existing C&D Landfill. The meeting will
be held June 10, 2008 at Union County’s Agricultural Center, located at 3230 Presson Road, Monroe.
The meeting will be held in Room 162 and will begin promptly at 9:00 AM.

A map showing Union County’s property in relation to yours is attached. Please note that the gray area
outlined in yellow is the topic of discussion. Here are some facts related to the area:

• Union County owns a total of 173.8 acres of which 20.4 are designated for the disposal of C&D
waste.
• Until recently the C&D Landfill has accepted approximately 25,000 tons of waste per year (the
volume received has been significantly reduced over the past several months). There is currently
available space for an additional 438,700 tons to be disposed of. The yearly tonnage and
available space equate to approximately 17.5 years of remaining disposal capacity.
• The proposed final elevation is approximately 642 feet. The current base elevation is
approximately 542 feet.
• In addition to C&D disposal, Union County owns and operates a municipal solid waste transfer
station and hosts multiple recycling programs adjacent to the C&D disposal area.

If additional information or discussion is required, please do not hesitate to contact me at [phone].

Respectfully,

Mark Tye, Assistant Public Works Director

Attachment

1
1
Public Meeting Union County C&D LandfillJune 10, 2008
Public Meeting Union County C&D LandfillJune 10, 2008
Public Meeting Located at:
Union County Agricultural Center Room 162
3230 Presson Road, Monroe.
June 10, 2008 at 9:00 AM
Prepared for:
Union County Public Works
500 N. Main St., Suite 500
Monroe, NC 28112
2
Why Are We Here TodayWhy Are We Here Today
• January 1, 2007 - New Solid Waste Rules for
Construction and Demolition (C&D) Landfills
• C&D Landfills over Closed MSW Landfills must
submit a permit application
• Permit application includes Local Government
Approval
• NC Solid Waste Rules, Title 15A NCAC
13B.0536(c)(11)(C) requires a public meeting to
inform the community
3
C&D Landfill BackgroundC&D Landfill Background
• Landfill at 2125 Austin Chaney Road, Wingate
4
2
5
C&D Landfill BackgroundC&D Landfill Background
• Disposes of construction and demolition (C&D)
waste – from construction, remodeling,
repair/demolition of buildings, structures, and
roads
• Owned/Operated by Union County since 1972
• Prior to 1972 - Wingate owned/operated the
landfill for an unknown amount of time
6
C&D Landfill Background ContinuedC&D Landfill Background Continued
• Municipal Solid Waste (MSW) landfill operated
until December 1997
• December 1997 MSW landfill was closed and
cover system was constructed
• January 1998 C&D disposal over closed MSW
landfill began – 5 year Transition Plan
• Since 2003 – 1 year permit renewals
7
C&D Landfill Background ContinuedC&D Landfill Background Continued
• New Rules – 5 year permit renewal period
• Permit Application for continued operations of
existing landfill
• New activities are not proposed
8
Local Government Approval
Process
Local Government Approval Process
• Local Government Approval from County Board
of Commissioners is required
• May 08, 2008 – Neighbor Letters
• May 10, 2008 – Legal Advertisement
• June 10, 2008 – Public Meeting
• June 16, 2008 – Board of Commissioner's
Meeting
3
9
Solid Waste Management Activity Summary
Solid Waste Management Activity Summary
•Site Map
•Site Facts
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11
Landfill FactsLandfill Facts
• Property is 173.8 Acres
• C&D Landfill Area is 20.4 Acres
• Approximately 25,000 tons C&D waste per year
• Estimated capacity approximately 438,700 tons
• Estimated life approximately 17.5 years
• Final Elevation 642 feet
• Base Elevation 542 feet
12
4
13
Landfill FactsLandfill Facts
• In addition to C&D Landfill
– MSW Transfer Station
– Drop-off & Recycling Center
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15 16
Questions?Questions?
Questions after today may be directed to
Mr. Mark Tye
Union County Assistant Public Works Director
500 N. Main St., Suite 500
Monroe, NC 28112
[phone]