7604_NCZoo_renewapplic_20200527

North Carolina Zoological Park
Solid Waste Composting Facility
Permit Application for SWC-76-04
June 2020
North
Carolina
Prepared by:
North Carolina Zoological Park
4401 Zoo Parkway
Asheboro, North Carolina 27205
Phone: [phone]
Fax: [phone]
Contact Email: [e-mail]
Permit to operate a Small, Type 3 Solid Waste Facility expires 6/23/2020
This document can be found @:
shares/horticulture/compost-horticulture folder/compost permits & applications for the nc
zoo/2020 compost permit application

Table of Contents
Chapter
Page
1.0 General
3
1.1 Compost facility operation statistics table
5
2.0 Application Requirements
7
2.1 Aerial Photograph and maps
7
Figure 1 Compost Facility topographic map
7
Figure 2 Compost Facility aerial map
8
2.2 Zoning Approval
9
Figure 3 Randolph County Zoning Map
9
2.3 Siting Requirements
9
2.3.1 Flood Plain
9
Figure 4 Randolph County — Floodplain map
10
2.3.2 Property line Buffer
11
2.3.3 Residences Buffer
11
2.3.4 Well Buffer
11
2.3.5 Perennial Streams/Rivers Buffer
11
2.3.6 Water Quality Standards
11
2.3.7 Closed -Out Disposal Area
12
2.3.8 Adequate Access
12
2.3.9 Surface Water Requirements
12
2.3.10 Ground Water Requirements
12
2.3.11 Public Access
12
2.3.12 Sedimentation Pollution Control Law
12
2.3.13 Air Pollution Control Requirements
12
2.4 Waste Types
13
2.5 Site Plan
Figure 5 Compost Site map
14
2.6 Operation Description
15
2.7 Process Flow
17
2.8 Description of Composting Process
17
2.8.1 Materials Receiving/Processing
17
2.8.2 Mixing/Composting
18
2.8.3 Curing and Storage
18
2.8.4 Leachate Treatment
18
2.8.5 Product Testing
18
3.0 Product Label
19
4.0 Engineering Plans and Specifications
19
5.0 O&M Manual
19
6.0 As Built Drawings
19
7.0 Equipment Specifications
19
8.0 Documentation for Water Quality Permit
19
9.0 Documentation to pump overflow to sanitary sewer
19
10.0 Attachments — A -I
20
2

1.0 General
The North Carolina Zoological Park currently operates a Small, Type 3 Solid Waste Facility
permit which expires June 23, 2020. The NC Zoo's compost facility was completed in 1998 and
was paved with recycled power plant coal ash. This facility is adjacent to the service support
area and greenhouses in the southeast corner of the NC Zoo grounds in Asheboro, North
Carolina. We received a letter, which approved a permit modification request to add cardboard
to the list of material that may be composted at the facility on 8/6/99. We received a letter, which
approved a permit modification request to add the additional feedstock of incinerator ash to the
list of material that may be composted at the facility on 4/11/11. This 2011 revision also included
an updated facility capacity of 3,999 tons per year. We also received a letter, which approved a
permit modification request to add sludge that was dredged from the bottom of the compost
sediment pond to the list of material that may be composted at the facility on 12/19/13. The Zoo
applied for a continuation permit in September 2009 and received a Solid Waste Compost
Facility permit (Permit Number SWC-76-04) on 6/23/10 for another five years. Again, in 2015,
the Zoo was issued a Permit to Operate a solid waste compost facility with the following
conditions:
1. Operation and maintenance of this facility shall be in accordance with the Solid Waste
Compost Rules (15A NCAC 13B, Section .1400), the Permit Application and the
Operation and Maintenance Manual submitted with the permit application, and the permit
conditions. Failure to comply may result in compliance actions or permit revocation by
the Division of Waste Management.
2. This facility shall be operated in such a manner that erosion and runoff from the site shall
be controlled. Any leachate generated at the facility and any runoff from the facility shall
be managed in such a manner that ground and surface water quality will not be adversely
affected. The facility shall be maintained to prevent the accumulation of stormwater or
leachate on travel areas or active composting sites.
3. An appropriate Division of Water Quality permit for managing any stormwater or
wastewater discharged from the facility shall be obtained within two years of the date of
issuance of the permit (June 23, 2010) as required.
4. Only materials specifically listed in the permit application may be managed at this
facility. Before additional materials may be added, there must be adequate testing and
prior approval by the Division of Waste Management in writing.
5. All compost produced at the facility shall meet the requirements of Rule .1407 of the
Solid Waste Compost Rules and the permit application.
6. Testing and reporting shall be conducted in accordance with the requirements of Rule
.1408 and the permit application. An annual report of facility activities for the fiscal year
July 1 to June 30 shall be submitted to the Division of Waste Management by August 1
of each year on forms provided by the Division. This report shall include the amount of
materials composted in tons.
7. The compost operation and the compost pad shall be operated and maintained with
sufficient dust control measures to minimize airborne emissions and to prevent dust from
becoming a nuisance or safety hazard.
8. Windrow data shall be maintained in writing as required to document temperatures,
moisture levels and turning intervals.

9. The NC Zoological Park Compost Facility shall ensure that windrow moisture levels in
the compost windrows are maintained in the 40-60% range for newly created windrows
and compost windrows within PFRP.
10. Windrow dimensions for active composting shall be 50 feet long x 18 feet wide x 16 feet
tall.
11. Windrows turning shall not occur without consulting weather forecasts for favorable
conditions including temperature, wind direction, temperature inversions, and
precipitation.
12. The odor management plan shall be followed to minimize odors at the facility boundary.
Upon receipt of a facility complaint the facility operator shall investigate and take action
as necessary to minimize the cause of the complaint. A copy of all complaints regarding
this facility shall be maintained for the duration of the permit including the operator's
actions taken to resolve the complaints.
13. Feedstocks shall not be received that are in an anaerobic state.
14. The facility shall be operated in a manner that reduces the potential for vector attraction.
15. Stockpiling of finished product shall be limited to a height of 30'.
16. The facility operational capacity for this permit shall be limited to 3,999 tons of
feedstocks per year received for composting.
17. This permit will expire on June 23,2020. Changes in ownership increase in facility
capacity or receiving feed stocks not identified in the permit application shall require a
permit modification.
In 1996 the NC Zoo composted over 913.03 tons of manure, vegetative waste, and animal feed
processing wastes at a pilot facility. It was estimated that composting these wastes resulted in
annual savings of more then $30,000 over the alternative of land filling off -site with waste sent
to the Randolph County transfer station. Over the years the Zoo's facility has become the
cornerstone for the NC Zoo's Environmental Management System ISO 14001:2015 certification
program. It is integral to the ability of the Zoo to handle approved waste and is consistent with
the overall goals of the NC Zoo to be environmentally sound in its operations. The facilities
capacity appears to be just adequate considering additional Elephant Rhino exhibit expansion.
Future expansions at the Zoo may be within quantity capacity but will undoubtedly exceed space
capacity with the current technology and process. The access to the site during periods of heavy
precipitation is still being augmented by periodic additions of gravel. The site is saving
significant operating costs each year and provides a valuable soil amendment for NC Zoo
landscaping projects. Production, stockpiling and using as needed is handled by Zoo project
management.
See Attachment A for current NC Zoo's EMS program certification.
The original site plan drawings, project specifications and original permit documents for the
permanent facility were prepared for the NC Zoo by E&A Environmental Consultants, Inc.
Subsequent permit applications and operating procedure updates prepared by Curatorial staff in
the Horticulture department at the North Carolina Zoological Park.
4

Compost facility operation statistics to date*(One ton = 2,000 lbs.)
Time Frame
Waste Received
Product produced
Product used
Savings
on site
July 1996-
798.67 tons
120.25 tons
19.50 tons
$43,926 in waste disposal
June 1997
$965 in soil supplement costs
July 1997-
1067.00 tons
80.00 tons
153.00 tons
$59,218 in waste disposal
June 1998
$7,573 in soil supplement costs
July 1998-
1568.55 tons
191.25 tons
97.50 tons
$95,681 in waste disposal
June 1999
$4,826 in soil supplement costs
July 1999-
1408.00 tons
244.00 tons
130.00 tons
$88,704 in waste disposal
June 2000
$6,435 in soil supplement costs
July 2000-
1381.00 tons
207.00 tons
325.00 tons
$87,003 in waste disposal
June 2001
$16087 in soil supplement costs
July 2001—
1444.00 tons
342.00 tons
249.00 tons
$90,972 in waste disposal
June 2002
$12,325.50 in soil supplement costs
July 2002—
1610.64 tons
362.00 tons
92.5 tons
$101,470.32 in waste disposal
June 2003
$ 4,578.75 in soil supplement costs
July 2003—
1408 tons
238 tons
71 tons
$88,704.00 in waste disposal
June 2004
$ 3,514.50 in soil supplement costs
July 2004—
1478 tons
211 tons
146 tons
$93,114.00 in waste disposal
June 2005
$ 7,227.00 in soil supplement costs
July 2005—
1345 tons
298 tons
166 tons
$84,735.00 in waste disposal
May 2006
$14,751.00 in soil supplement costs
July 2006 —
1925 tons
330 tons
934 tons
$121.275.00 in waste disposal
June 07
$46,233.00 in soil supplement costs
July 2007 —
2783 tons
300 tons
328 tons
$244,263.91 in waste disposal
June 08
$16,236.00 in soil supplement costs
July 2008 —
2305 tons
591 tons
461 tons
$167,012.45 in waste disposal
June 09
$22,819.50 in soil supplement costs
July 2009—
1826 tons
555 tons
331 tons
$149,859.82 in waste disposal
June 2010
$16,384.50 in soil supplement
July 2010—
1752 tons
411 tons
690 tons
$ 143,786.64 in waste disposal
June 2011
$ 34,155.00 in soil supplement
July 2011—
1819 tons
644 tons
198 tons
$ 149,285.33 in waste disposal
June 2012
$ 9,801.00 in soil supplement
July 2012—
1820 tons
480 tons
245 tons
$ 149,367.40 in waste disposal
June 2013
$ 23,760.00 in soil supplement
July 2013—
2192 tons
420 tons
205 tons
$153,928.22 in waste disposal
June 2014
$10,147.50 in soil supplement
July 2014-
1834 tons
460 tons
289 tons
$128,788.48 in waste disposal
June 2015
$14,305.50 in soil supplement
July 2015-
1809 tons
535 tons
91 tons
$127,032.91 in waste disposal
June 2016
$4,504.50 in soil supplement
July 2016-
1692 tons
468 tons
193 tons
$118,816.85 in waste disposal
June 2017
$9,553.50 in soil supplement
July 2017-
1621 tons
576 tons
220 tons
$113,831.04 in waste disposal
June 2018
$10,890.00 in soil supplement
July 2018-
1737 tons
662 tons
110 tons
$121,976.88 in waste disposal
June 2019
$5,445.00 in soil supplement

Waste disposal totals for 1996 based on $55 per ton tipping and hauling fee;
Waste disposal totals for 1997-1998 based on $61 per ton tipping and hauling fee for other 'h year;
Waste disposal totals for 1998-1999 based on $61 per ton tipping and handling fee;
Waste disposal totals for 1999-2007 based on $63 per ton tipping and handling fee;Soil Supplement costs $49.50/ton
Waste disposal totals for 2007-2008 based on $87.77 per ton tipping and handling fee
Waste disposal totals for 2009 based on $82.07 per ton tipping and handling fee; Soil Supplement costs based on
$49.50 per ton
Waste disposal totals for 2009-2010 based on $82.07 per ton tipping and handling fee; Soil Supplement costs based
on $49.50 per ton
Waste disposal totals for 2010-2011 based on $82.07 per ton tipping and handling fee; Soil Supplement costs based
on $49.50 per ton
Waste disposal totals for 2011-2012 based on $82.07 per ton tipping and handling fee; Soil Supplement costs based
on $49.50 per ton
Waste disposal totals for 2013-2014 based on Tipping fee $50 per ton, Hauling fee $11.70 per ton, soil supplement
cost at 49.50 per ton
Waste disposal totals for 2015-2020 based on $50.00/ton tipping and handling fee, $11.70/ton hauling fee,
$75.00/ton dumpster roll off fee (approx. 8.8 tons for full dumpster). Soil supplement cost @ $49.50/ton Savings.

2.0 Application Requirements
2.1 Aerial Photograph and Map
Figure 1 shows the NC Zoo Compost Facility with a 250 foot boundary delineated around
it, the Randolph County Property plat map, the perennial streams and rivers in the area,
and the topography data at a 2 foot interval.
Figure 1 Compost Facility Topographic Map:
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Parcel Information: Owner: State of North Carolina
Parcel #: 7678736792 Pg#: 02060
REID: 0016117 Book #: 001227

Total acreage of the parcel that the compost site is on 78 acres. The total acreage of the compost
site is 2 acres.
2.1.2 Aerial Map
Figure 2 of the Compost Facility Aerial map below shows the approximate boundaries of
compost facility, existing zoo property boundaries, and known structures. Using the
ArcView GIS software, measurements have been calculated from the approximate
facility boundaries to neighboring parcel structures. Also calculated are the
measurements of the facility to Zoo property boundaries. Measurements have been noted
on this map. Note: three additional homes have been built near the Compost Facility
sin(
1n 2uu2.

Figure 2 Compost Facility Aerial Map
2.2 Zoning Approval
A letter of approval from the Randolph County Department of Planning and
Development, the zoning jurisdiction, is included as Appendix B. The facility is allowed
within the existing zoning.
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Figure 3 Randolph County Zoning Map
2.3 Siting Requirements
The following sections explain how the facility complies with siting and design
Standard contained in the Solid Waste Compost Rules.
2.3.1 Floodplain
As seen in Figure 4, the Randolph County GIS site shows the Zoo's compost site is not
located within a floodplain.
9

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DatelTime Stamp All information on this media is prepared for the inventory of real property found within Randolph County All data.
including maps, is compiled from recorded deeds, plats, and other public records and data, Users of this data are
hereby notified that the aforementioned public primary informatmn sources should be consulted for verification of the
11113/2007 information. All information contained herein was created for the County's internal use Randolph County, its agents
11:51,42 AM EST and employees make no warranty as to the correctness or accuracy of the information sal forth on this media whether
(September express or implied, in fad or in taw, including without limilalion the implied warranties of merchantability and fitness for a
Version 3.2
22 (S particular use. Any resale of this data is strictly prohibited in accordance with North Carolina General Statute 132-10.
Server. 02 Grid is based on North Carolina State Plane NAl
http://www.co.randolph.ne.uslscriptslesrimap.dll?name—Randolph&LEFT=1768299.48l.., 11/13/2007
Figure 4 Randolph County Floodplain Map
10

2.3.2 Property line Buffer
As shown in Figure 2 of the Aerial map, the facility is greater than 100 feet from the
property line.
2.3.3 Residences Buffer
As shown in Figure 2 of the Aerial map, the facility is greater than 200 feet from the
closest residence. Note: three additional homes have been built near the Compost
Facility since previous application in 2002, one estimated at 250 foot from compost
facility perimeter.
2.3.4 Well Buffer
There was evidence of an existing well located in the vicinity of the compost facility.
The well serviced a single dwelling used by the previous land owner. It was last located
in 1988 and was thought to be a shallow hand dug or bored well. During excavation and
grading of the site a thorough investigation was made by NC Zoo staff to locate the well.
The well was not located during construction. The amount of grading/cut accomplished
in the construction of the site would have unearthed any remains of the well and allowed
it to become visible in the process. No surface sinking has occurred since construction in
1996 that indicates any remains of a well. If any evidence of sinking occurs the well will
be indicated on drawings and abandoned in accordance with the North Carolina
Department of Environment and Natural Resources Division of Water Quality, Well
Construction Standards.
2.3.5 Perennial Streams/Rivers Buffer
As shown in Figure 1: Topographic map the facility is greater than 50 feet from perennial
streams and rivers.
2.3.6 Water Quality Standards
All storm water runoff is collected from the compost facility and diverted to a
sedimentation basin that had infrequent effluent overflows in the past. The sediment
basin is pumped out periodically to avoid overflows. On September 16th of 2014 two
automatic pumps were installed at the sedimentation basin to pump excess water into the
sanitary sewer line and maintain the basin at a level that prevents it from overflowing.
Since the basin is no longer overflowing, the water quality testing that had occurred in the
past has been discontinued.
The collection system and sedimentation basin were designed in accordance with the
North Carolina Sedimentation Law and recommended design practices outlined in the
State of North Carolina Erosion and Sediment Control Planning and Design Manual.
Parameter
Water Quality Standard
pH
6.0-9.0
BOD5
<5 m /l
DO
>5 m /l
NH3-N
<2 m /l
Total Coliform
<1000 m n/
Nitrate -Nitrogen
1Ou /l
Total Dissolved Solids
<500 m /l
Total Suspended Solids
<20 mg/l
A suggested but not required natural succession buffer of 15 feet of grasses was
established around the sediment pond for erosion control and for an additional nutrient
catch zone in 2002. Hay bales are periodically added for filtration as a supplement to the
11

grass border. Since then an additional 25 feet has been added to form a 40 foot vegetation
buffer that is maintained around the sedimentation basin as a vegetation filter. A new
vegetation berm was added to the compost site along the east side of the site to further
buffer the pond from sediment.
2.3.7 Closed -Out Disposal Area
This facility is not located over a closed -out disposal area.
2.3.8 Adequate Access
A 25 foot minimum distance is being maintained around the compost facility to allow
adequate access by fire fighting equipment.
2.3.9 Surface Water Requirements
The compost facility does not discharge into wetlands or any type of water body. Water
quality standards are outlined in 2.3.6
2.3.10 Ground Water Requirements
The facility is operated in accordance with groundwater standards as established under
15A NCAC 2L. Natural soils from the site were used as a pad for the facility. A
minimum of 18 inches of compacted clay is serving as the pad base. A layer of coal ash
mixed with water was placed on the clay base and compacted to serve as the pad surface.
NC Zoo staff has added layers of gravel in high traffic areas to aid equipment handling
and truck/compost unloading.
2.3.11 Public Access
The site does not encourage uncontrolled public access. A locked gate restricts access off
of State Road 2833 Panther Creek Road although removal of a fence around the Zoo's
construction storage area and clearing around electrical lines has opened a potential
access. An automatic gate with clear signage of controlled access off of Panther Creek
Road serves to control public access to the Zoo's service support and is locked by Zoo
Ranger personnel after Zoo hours. The gravel road from the greenhouse to the compost
area discourages public access and the Zoo's perimeter fence and pond does fence
portions of the facility. An old woods clearing path from neighboring property owner on
the east side of the facility has been controlled with downed tree barriers. A perimeter
fence has been repeatedly requested though the Zoo's operating budget but has not been
funded yet.
2.3.12 Sedimentation Pollution Control Law
An erosion and sedimentation control plan was submitted prior to facility construction.
The facility's topography and slope all drain to the sedimentation basin. A suggested but
not required natural succession buffer of 15 feet of grasses was established around the
sediment pond for erosion control and for an additional nutrient catching zone in 2002.
Since then an additional 25 feet for a total of 40 foot vegetation buffer is maintained
around the sedimentation basin as a vegetation filter. Another All grades slope to the
sediment pond but in addition the perimeters of the site and the top of the sediment pond
dam also have a 10 foot buffer of grasses which is mowed on a regular basis.
2.3.13 Air Pollution Control Requirements
The location of the facility meets the minimum buffer requirements. The facility shall be
operated to meet the Air pollution Control Requirements (15A NCAC 2D) to minimize
fugitive emissions and odors. Due to the small scale of the composting operation and
good operational practices such as establishing mix ratios and maintaining aerobic
conditions within the windrows there is minimal odor problems
12

2.4 Waste Types
The compost facility is composting materials from NC Zoo activities. These materials
include:
1. Manure
2. Animal bedding materials (straw, used mulch, other organics, Organic fibers)
3. Restaurant waste from kitchen
4. Green waste (grass clippings, leaves, brush, tree trimmings, etc) from landscape
maintenance
5. Firewood, chipped/shredded wood
6. Organic fibers, bedding, mulch or used mulch
7. Food scraps and/or spoiled, left over food from the commissary
8. Cardboard
9. Incinerator Ash
10. Food scraps, utensils, plates, cups from restaurants
A soil evaluation by the NCDENR indicated that the natural soils in and around the
compost facility were mostly clay with a thin layer of topsoil in some areas.
13

2.5 Site Plan
Soil
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0 0 0 0 0 0 Curing Piles 2' x/
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Figure 5 Compost Site Map
14

2.6 Operation Description
The following information describes the facility operation:
Facility Operator: Jody Stancil
Curator of Horticulture
North Carolina Zoological Park
4401 Zoo Parkway
Asheboro, NC 27205
336-879-7400
e-mail: [e-mail]
List of personnel required
Responsibilities of position
Curator of Horticulture (Jody Stancil)
Facility Operator — Section Manager for
horticulture, responsible for permit
applications, permit reporting,
administration of site.
Exterior Horticulture Supervisor (John
Facility Supervisor- Section supervisor for
Ledbetter)
horticulture, responsible for daily
operations and personnel assignments,
monitors that required testing has been
completed, provides required reports to
Curator, procures supplies and monitors
equipment; updates procedures and training
reminders for unloading at site.
Grounds Worker II (George Adams)
Facility technician —Compost facility
technician, responsible for daily work;
mixing, takes temperatures and maintains
the site, monitors daily log and provides
reporting data, records daily operations in
log, operates equipment, disposes of trash,
mowing, general housekeeping and applies
biological controls.
Grounds Worker II (Dean Hinson)
Assists facility technician, responsible for
daily work; mixing, takes temperatures and
maintains the site, monitors daily log and
provides reporting data, records daily
operations in log, operates equipment,
disposes of trash, mowing, general
housekeeping.
Aquatics Systems Technican (Bert
Water testing
Chabannes
Veterinary Technician Heather Scott
Coliform testing
15
The operation plan for the compost facility is detailed in the Operational procedure which
is included with the permit application. An overview of the facility operation is as
follows: Materials to be composted are delivered by individual zoo staff (animal keepers
and grounds workers) and unloaded according to the type of material nine piles (1 type of
manure, 2 types of plant wastes, 2 types of brush piles, cardboard, fire wood, stumps and

trunks and bamboo). Personnel from the horticulture section monitor and separate in the
unloading area as needed. Horticulture department personnel mix the material within the
types using a front end loader and place the material in windrows. Windrows are
typically 18 feet wide, 50 feet long and 16 feet high. The windrows are turned by front
end loader to maintain aerobic conditions within the pile. Odors are minimized. The
composting pad is sloped to facilitate drainage and gravel has been added in strategic
unloading areas to improve access in adverse weather conditions. In the event of extreme
conditions or problems, waste can be disposed of in the Zoo's dumpster. Material
remains in windrows until correct temperature and duration of temperature has been met
then is transferred to curing pile for at least a month duration prior to use. Temperatures
are monitored weekly within the windrows. The material will achieve process to further
reduce pathogens (PFRP) requirements by maintaining pile temperatures above 13 FF for
at least 15 days with five turnings prior to use. Alternatively, PFRP can be achieved after
windrowing using static pile and achieving a minimum of 131 degrees for three
consecutive days.
The finished compost produced at the compost facility is to be stockpiled on and off site.
The compost produced is utilized in gardening and landscaping projects undertaken on
zoo grounds. This product is used as a soil amendment and has removed the Zoo's need
to purchase outside sources of compost for our landscaping projects. The elephants and
rhinos are some of the main waste producers and have considerably increased our waste
received at the site necessitating a site plan change since the 2002 application. The waste
expected to be received is estimated at 2,294 tons total per year and should not exceed the
1,000 tons per quarter or exceed 2 acres for type 3 small compost sites. This additional
waste has made it imperative to remove or reduce some of the sites operational areas such
as stockpiling all finished product, soil mixing, brush holding or cardboard so that space
to windrow waste properly can be maintained.
The Zoo's compost site is not in operation during hurricanes, heavy rain, and snow,
freezing rain or other adverse conditions. The equipment is not used during these times
at the compost site but used in other sections of the park when needed. Horticulture waste
is not generated during these extremes and animal waste is normally not delivered until
more favorable weather conditions exist. Priority is feeding and protecting the animals
rather then cleaning stalls or removing manure from exhibits. Although we have not had
problems with objects blowing from the site all moveable items are secured during
installation. (Signs are firmly driven into the ground, logbooks are secure and fire
extinguisher is properly secured).
16

2.7 Process Flow
The process flow diagram for this facility is:
Anticipated Process durations:
Receiving/Processing: 2 to 4 hours per week at a minimum of twice per week but
generally every day for a total
Preparation Mixing - 6-8 Hrs per week turning windrows
Composting: 15 days temperature monitoring 30 days rest/ sampling days total of
1 %2 months
Curing and Storage: 2-3 months
Distribution: 2 hours every 1 1/2 months
2.8 Description of composting process:
2.8.1 Materials Receiving/Processing
Materials to be composted are delivered by individual zoo staff (animal keepers
and groundworkers) and unloaded according to the type of material into nine piles
(1 type of manure, 2 types of plant wastes, 2 types of brush piles, cardboard, fire
wood, stumps and trunks and bamboo). Cardboard is not currently being accepted
17

at the compost site but the Zoo would like to retain permission to compost this
waste if needed in the future. Any contaminants inadvertently mixed into the
organic materials are removed at this point and disposed of at the Zoo's dumpster.
Personnel from the horticulture section monitor and separate the nine materials
plus an additional brush decomposing brush pile as needed. Horticulture
personnel will place the processed compost into the aging pile which when
properly aged will go into either an on -site finished pile or transported to the off -
site finished pile.
Various types of vehicles utilize the ramp to dump trailers. Materials requiring
size reduction prior to composting are processed with a chipper by Zoo staff or
are stockpiled and an outside contractor is hired to reduce particle size on site
with larger tub grinder types of equipment.
2.8.2 Mixing/Composting
Manure, plant material and ground up brush are mixed by a front end loader.
Water from the Jones Pond can be added to the mix prior to PFRP if needed for
optimum moisture content for the compost process. The bucket of the front end
loader is used to measure the volumes of each material added to the mix.
Windrows are 18 foot wide, 50 foot long and 16 foot high. The windrows are
turned by front end loader to aerate the pile. Temperatures are measured in each
windrow in accordance with the Zoo's EMS Compost procedure. PFRP reduction
is achieved by maintaining temperatures above 131°F for 15 days while turning
the pile 5 times during the same period.
2.8.3 Curing and Storage
Material is stored on Zoo site or at the existing compost facility for final curing
and to await final use. The material is cured for at least one month. Final curing
and some storage capacity are provided at the compost facility. Additional
storage for stockpiled finished compost is in the process of planning. It is being
placed south of the greenhouse area just off the service support compost gravel
access road within 750 feet of the compost site. Additional compost storage prior
to final use is also available on zoo site with areas such as the staging areas of
exhibit construction, vicinity of the service support greenhouses, vicinity of the
north American soil stockpiling site, or the zoo's entrance to the burrow pit
identified as possible locations.
2.8.4 Leachate Treatment
All run — off from the facility is collected in the sedimentation basin. Testing is
outlined in Section 2.3.6
2.8.5 Product Testing
The finished compost will be tested prior to use in public areas or if shared on a
very limited basis with Zoo partners. Waste samples are taken from every 10 to
20 foot segment of each completed windrow and tested by the NCDA & CS
Agronomic Division Plant/Waste/Solution Section Analysis Laboratory for the
following parameters except Foreign Matter and Fecal Coliform. The Foreign
18

Matter is tested by Zoo personnel twice a year and the fecal coliform tests are by
the Zoo's Veterinary staff. The lab tests for acceptable levels of coliform
bacteria, salmonella and parasitic helminth ova as required by our Chief
Veterinary.
Parameter
Unit
Limit (mg/kg(mg/kg dry weight)
Foreign Matter
%
<6%
Cadmium
mg/kgmg/kg
dry
wt.
39
Copper
mg/kgmg/kg
dry
wt.
1500
Lead
mg/kgmg/kg
dry
wt.
300
Nickel
mg/kgmg/kg
dry
wt.
420
Zinc
mg/kg
dry
wt.
2800
Fecal Coliform
MPN/g dry wt.
<1000 or as ruled
acceptable by Zoo
Veterinary staff
Total N, P, K, pH
%
None
The fecal coliform limit at the sedimentation basin outflow must be less then 1000 mpn/g.
3.0 Product Label
All but a very small amount of the final compost product is utilized on NC Zoo grounds.
Any future sale of the product would be in accordance with the North Carolina Solid
Waste Compost Rules. Sales are not expected in the short term but may be considered as
final product stockpiled is not needed for Zoo exhibits and landscaping projects.
4.0 Engineering Plans and Specifications
Engineering plans and specifications for the compost facility were included with the
original permit application. No plans have been resubmitted with this application.
Existing equipment including front end loader and temperature probes are in use at the
facility. Specifications for this equipment were not included with this application.
5.0 O&M Manual
A copy of the Zoo's EMS Compost Operations Procedure SOP _H_3.19 revision 25 and
the Organic Waste Table EMS _H_3.19.3 revision 16 are included with this permit
application (See Attachment C & D).
6.0 As Built Drawings
As built drawings do not exist for the compost facility. Please refer to Figure 5 Compost
Site Map.
7.0 Equipment Specifications
See attachment F.
8.0 Documentation Regarding Water Quality Permit
See Attachments G-H.
9.0 Letter from the City of Asheboro allowing NCZoo to pump storm
water overflow into the sanitary sewer
See attachment I.
19

10.0 Attachments
20

Attachment A
North Carolina Zoo's Environmental Management System
ISO 14001:2015 Program
Certification
21

NSF
ISR
qr:)
Certificate of Registration
This certifies that the Environmental Management System of
North Carolina Zoological Park
4401 Zoo Parkway
Asheboro, North Carolina, 27205, United States
has been assessed by NSF-ISR and found to be in conformance to the following standard(s):
ISO 14001:2004
Scope of Registration:
Environmental Management System for North Carolina Zoological Park. The fence line is defined as the 1500 acre site. Exclusions are Ridge's Mountain
, Bachelor Creek, Pisgah Covered Bridge, North Carolina Zoo Society Property and Arnett Branch Longleaf Pine Forest.
Certificate Number: C0097662-EM3_
Certificate Issue Date: 22-NOV-2014
(eft a e Registration Date: 02-FEB-2015 Carl Blazik,
Expiration Date *: 01-FEB-2018 Director, Technical
Operations & Business Units,
NSF-ISR, Ltd.
NSF International Strategic Registrations
789 North Dixboro Road, Ann Arbor, Michigan 48105 1 (888) NSF-9000 I www risf-isr.org
Aadie <ed ReguLrdie. and /urAccredi0iu M-L.'I La,-rtiGcate. property efNSF-ISR andrnusL be relurued upuurnyueal.
*Cumpany is audited fur euZol uance aL regular numvals. T. verify uegis4-atiuns eall (888) NSF-9000 ur visit.- web rile A ww—f-isr.aug
22

Attachment B
Zoning Approval Letter from the Randolph County Planning Department
23

�o �►�� 9 RANDOLPH COUNTY
^•y DEPARTMENT OF PLANNING & DEVELOPMENT
s 204 East Academy Street • Post Office Box 771
9 ' .... �% Asheboro, North Carolina 27204-0771
~T Telephone. [phone] • Fax: [phone]
777E . y
May 7, 2015
Miriam Cattabriga
Curator of Horticulture
North Carolina Zoo
4401 Zoo Parkway
Asheboro, NC 27205
REFERENCE: Randolph County Zoning Regulations
Compost Site — NC Zoo
Dear Ms. Cattabriga:
As per renewing the N.C. Zoo's Compost Permit, this is to advise you that the construction and location
of a Compost Site at the NC Zoo is permitted by the Randolph County Zoning Regulations. This Activity
would be considered an accessory use customarily incidental and subordinate to the principal use of the
NC Zoo property
If you have any questions, please contact me.
Sincerely,
Jay Dale, Director
Planning and Zoning
—TOLL FREE NUMBERS —
Greensboro -Liberty: 218-4555 / Archdale -Trinity Area: 819-3555
24

Attachment C
Compost Operations Procedure
SOP H 3.19 Revision 25
25

HORTICULTURE
Name: Compost Operations and Maintenance
Procedure
SOP_H_3.19
Revision Number: 25
STANDARD
Revision Date: 1/2/20
Prepared By: Curator of Horticulture
Created: 1997
OPERATING
Approved By: Curator of Horticulture
Effective Date: 1/2/20
Reviewed Date: 1/2/20
PROCEDURE
Date: 1/2/2020
Review Frequency: yearly
Next Review Due: 2021
Pages: 11
Purpose:
This procedure is to ensure consistent operation of the North Carolina Zoo's compost operations. Solid
Waste Compost rules require the zoo to obtain a permit. The permit requires a detailed operation and
maintenance manual outlining a quality assurance plan for the process and final product, contingency plans
and explanation of how the facility will comply with operational requirements.
2.0 Associated Equipment: None
3.0 Associated Documentation:
• SOP_H_3.19.1 Compost Thermometer Calibration Procedure
• EMS_Z_3.19.2 Compost Operations Unloading Procedure
• EMS_H_4.19 Compost Log Form
• EMS_H_3.19.3 NCZP Organic Waste Table
• WA-200 Service intervals for Komatsu Wheel Loader
• WA-200 Komatsu operating manual — Horticulture office, Grounds Worker II's office and section 6.1
• DRAFT of the General Permit #NCG240000 to process wastewater under the National Pollutant Discharge
Elimination System for Compost Facilities
• SOP EMS_F_3.16 Compost Water Chemistry
• Dog and Cat Policy
• Policy and Procedure on Control of Native Small Predators and Feral Dogs at NCZ
4.0 Trainer: Curator of Horticulture
5.0 Evaluator: Curator of Horticulture
6.0 Location of Form/Document: Shares/Zoowide/Horticulture/Master SOPS
7.0 Consequences and Benefits:
• Less materials going into landfills
• Excellent soil additive for Horticulture purposes
• Reduces operating costs
8.0 Standard Operating Procedures:
8.1) Delivery / Pick up:
8.1.1 Materials to be composted are delivered by individual zoo staff (Animal Keepers and
Horticulture Technicians) and unloaded according to the type of material piles (1 type of manure, 2 types of plant
wastes, 2 types of brush piles, Visitor food scraps and compostable dinnerware, Commissary food waste, cardboard
is only taken as part of regular waste, fire wood, stumps and trunks and bamboo). Personnel from the Horticulture
section monitor and separate in this unloading area as needed.
EMS _H_3.19.3 NCZP Organic Waste Table
8.1.2 The Grounds Worker II position #60033503 is responsible for maintaining and monitoring this area on a regular
basis. If problems occur with inappropriate behaviors or improper
procedures, see Africa Horticulture Supervisor. This supervisor is also responsible for bringing up problems and
trends at the site at either weekly staff meetings or supervisor meetings or to individual supervisors. Warnings
should be clear and consequences of dumping incorrectly or using the compost site as a bone yard should be
followed up by either the Africa Horticulture supervisor or Curator of Exterior Horticulture.
26

8.1.3 The ramp and dumping sites should be contained within a 2,000 square foot area located near the access road.
Waste delivered to compost site will be dumped in "Receiving" area or onto concrete pad below the ramp. Staff will
keep waste organized in this area until a sufficient amount has accumulated to begin a windrow and start the active
composting process.
8.1.4 Firewood log sections should be brought to compost center and stockpiled for employee sign-up
sheet method or state surplus method on the edge of the compost storage area. See site plan. If wood is larger than
18" in length and has been stockpiled over three years it should be considered for removal from the site (burned or
reduced in size with a tub grinder on site). The Africa Horticulture Supervisor and Grounds worker II position
#60033503 will determine the best method of disposal and have a plan for disposal so stockpiled piles will not
accumulate for years. If wood is to be burned, obtain favorable weather conditions and a burn permit from the
forestry service. Timely and proper notification of Rangers, Animal staff, senior staff and Zoo Communications is
mandatory before burning on zoo property.
8.1.5 Brush can be dealt with in three manners.
• The brush can be chipped with the chipper and stockpiled for use as mulch (See document A3 Morbark-Chipper
Operation and A-4 Morbark — Chipper Operation & Service Intervals for chipper standard operating procedures
and Section 6.2 for specifications of chipper)
• When material is not suited for mulch the brush can be chipped with the chipper and added to current windrows
depending on particle size and amounts of chipped product.
• When quantity, labor or over 1 year in age brush accumulates and there are projected funds in the budget a tub
grinder can be requested for chipping and grinding.
• Burning of brush at the compost site is not permitted.
8.1.6 Cardboard is currently not being accepted at the compost site although compost permit allows for this waste source. If
it is determined to accept cardboard at the compost site it should be stockpiled separately and garden worms used to
compost this product. The finished worm section cardboard which has aged 1 year or has broken down to a small
particle size as determined by the Grounds worker II position #60033503, will be removed and added to the newest
raw waste windrow. It will be added at a ratio of 1 scoop of finished worm section cardboard to 10 scoops of raw
waste. Cardboard used by keepers and Horticulture can be placed in receiving pile.
8.1.7 The Africa Supervisor or Curator of Exterior Horticulture are responsible for initiating a "compost rules of
dumping" reminder four times per year. Periodic reminders to those staff who dump organic wastes or pick up
compost should include information on compost operation rules, necessary processes, current problems, remedies
and or changes to operations (such as finish pile location changes) which might have occurred. These reminders are
the responsibility of the Africa Horticulture Supervisor or Curator of Exterior Horticulture and should be timely.
These reminders may be handled by various means such as Division or Section meetings, conservation captain
meetings, emailed memo or supervisor announcements, as needed to correct individual behavior with the staff
person's immediate supervisor. Periodic reminders for yearly refresher training on EMS_Z_3.19.2 Compost
Operations Unloading Procedure should be included.
The communication list for these reminders is located on document EMS_H_3.19.3 NCZP Organic Waste Table.
8.1.8 Pickup of finished compost should be from the finished compost area. The finished compost produced at the
compost facility is expected to be stockpiled on and off site. Location should be appropriately marked with signage.
The Grounds Worker II position #60033503 should be responsible for maintaining and monitoring this area on a
regular basis.
8.2) Mixing Procedures:
8.2.1 Mix wastes together within the materials receiving area until enough material is received to start a new windrow,
normally once per month.
8.2.2 Horticulture staff (usually Grounds Worker II position #60033503 during the week or anyone available that can use
the Komatsu) will push raw manure and wastes into receiving pile daily except on weekends which will be on an as
need basis, at a minimum of twice per week or as needed with the Komatsu. Windrow dimensions for active
composting shall be approximately 40' X 18'x 8' high.
If the Komatsu cannot be used, then use other equipment as necessary, as available or as priorities dictate.
8.2.3 The Africa Horticulture Supervisor will direct operations of when to accomplish the "work manure". Goal setting
will be based on considerations such as:
• Keeping the ramp and gravel roadways free of dumped manure
• The placement of dumping
• Staff availability
• Work priorities
27

• The size of the piles in the mixing zone
• And the distance dumped manure gets from the mixing piles
• Improved housekeeping
• To keep storm water run-off hitting raw waste piles to as minimal a degree as possible.
8.2.4 Maintain a carbon (such as dead brush, fall leaves, straw) to Nitrogen (such as manure, green brush, fertilizer or
fresh food wastes) ratio of 20:1 to 40:1
8.2.5 Maintain moisture levels between 40-60%.
• Moisture levels will be taken similar to temperature taking procedures except moisture is only taken for the first
15 day cycle. Monitoring equipment is kept at the Grounds Worker II position #60033503 office.
• There is currently not a manual for the moisture meter, but there are operating instructions on the side of the
meter itself. The soil moisture meter has readings from 10 to 0, with 10 being the wettest and 0 the driest. As
stated 40-60% is the ideal range so the meter readings should be between 4 — 6. The African Horticulture
Supervisor will maintain an operating manual for any new meters (36" Soil Moisture Meter) ordered
• Water pumped from a pull behind pump if moisture levels are too low. If water is needed from the pull behind
water pump it is to be added before the pathogen reduction temperature period.
8.2.6 If there are questions about currently working compost windrow pile refer to Africa Horticulture Supervisor.
8.2.7 See site plan for location and orientation of windrows. Start at the windrow closest to the material receiving area. As
windrows are turned they will migrate south toward the end of the facility closest to the road.
8.2.8 Windrow Profiles:
a. The pad is sloped for drainage to sedimentation pond and Windrows are angled to drain toward sediment pond.
b. The windrow site should be contained within the site designated on site plan.
8.2.9 Air borne particulates and odors have not been a problem at the Zoo site as most of the wastes generated are from
Elephant manures, Rhino manures and horticulture waste. In the case of problems with odor or air borne
particulates a covering of wood chips would be applied to mitigate the problem or increased frequency of the mixing
of the waste into windrows would be initiated. A windbreak of trees is maintained around the entire site.
8.3) Major Equipment information:
8.3.1 WS-200 Komatsu Front-end loader (Vehicle 48) operating manual is kept on file in the
Horticulture Supervisor's office, or at vehicle maintenance office. Front end loader, document
#WA-200 Vehicle #8 servicing procedures is on Horticulture's Intranet site and section 6.1 in the
compost manual.
8.3.2 Equipment should be cleaned as needed to reduce corrosion, wear and tear on equipment hydraulic lines and to
prevent material from building up on engines for possible fire hazard. Also, equipment should be cleaned before
using in other sections of the park to avoid contamination and decrease sanitation risks. Equipment should be
cleaned prior to handling compost after handling manure. Cleaning consists of hosing equipment off with water and
should happen at the Greenhouse equipment washout area.
8.3.3 Contingency plans for corrective or remedial action in the event of equipment breakdown.
8.3.4 Equipment is taken to the Zoo's vehicle maintenance shop or vehicle maintenance personnel are called to the
composting site to repair. If equipment is not able to be repaired in a timely manner the Zoo's other front end
loaders would be scheduled for use at the site. If the chipper is being repaired, the material is stockpiled and used
when repaired. If the temperature probe is not operating properly after a calibration test the probe is replace and
compost rows affected re- started.
8.3.5 Removal of any non-compostable trash should be accomplished by the staff who dumps the waste. Any inadvertent
trash uncovered by mixing procedure should be removed by the staff person mixing the waste product and placed in
the trash bin located in the receiving area. The Grounds Worker II #60033503 will be responsible for disposing of
the trash on a weekly basis into the Zoo dumpster waste receptacle.
8.3.6 Zoo staff operating mixing equipment should wear protective clothing such as gloves, respirator or dust mask and
eye protection if not in protective glass cage of equipment.
8.4) Soil mixing and soil amendment stockpiling Soil mixing and soil amendment stockpiling is no longer carried out at the
compost site. Finished compost for soil mixing may be used from either the finished compost pile on -site or off -site at the
soil mixing site.
8.5) Recording data on site
8.5.1 A compost log located at the gate near the materials receiving area will be maintained at the site to record waste
being dumped. Waste will be logged upon arrival. A blank log form, EMS _H 4.19, is used for recording. The
28

controlled document of this form is kept in the EMS folder on Zoowide and on the Zoo's intranet EMS site.
Grounds Worker II #60033503 will check the log weekly to ensure staff are logging in materials as required. Two
compost log books are kept on Ground Worker II (#60033503) desk labeled Compost Log 1 and Compost Log 2.
Compost Log 1 contains windrow temps, moisture level and turning with corresponding dates: Waste receiving log
monitoring dates/parasitic wasp application dates/sediment pond stand pipe level.
Compost Log_2 contains straw bale installation dates/sediment pond dredging dates/sediment pond
pumping/thermometer testing dates/Glycerin composted.
8.5.2 The Elephant keeper work unit has been authorized to record compost amounts on a per -day
instead of a per -load basis. This is being done to save staff time as this work units makes on average 8 or 10 trips to
the compost site per day. This is the only Animal Section work unit with this need and is therefore the only one with
authorization to record on a per -day basis.
8.5.3 The person who is transporting the waste is responsible for recording --(see EMS_H_3.19.3 NCZP Organic Waste
Table)
- Composition of material/characterization
- Specific area from which the waste is from
- Amount of material
- Date
- Name of person who transported waste
- Description of the container and what it weighs if it is not a standardized load.
8.5.4 Standardized measurements have been adopted. The compost conversion formulas currently being used are listed in
EMS _H 3.19.3 NCZP Organic Waste Table. The Horticulture and Animal Curators will determine and coordinate
standardized weights and each sections' compost related procedures. The Organic Waste Table is reviewed once per
year. When the review date for the Organic Waste Table approaches, the Horticulture Supervisor (#60033368) or the
Grounds Worker II (position #60033503) will contact appropriate animal personnel for the updates on size of
containers, number of animals, and quantities brought to the compost site. The Horticulture Supervisor should
ensure that the above mentioned information is included in the Zoowide EMS_Z_3.7 Compost Operations
Unloading Procedure.
8.5.5 Temperatures and soil moisture levels will be taken from each currently working windrow at least once per week
and daily in newest windrow going through its first 15 day testing. EMS _H_3.19.1 Compost Thermometer
Calibration Procedure should be used to calibrate thermometer. Temperatures will be taken at the beginning, middle
and end of each 25' to 50' segment and averaged. The Grounds Worker II will take temperatures and record in
compost diary/log (Compost Log 1). See records and logs section
8.5.6 Africa Grounds Worker II position #60033503 will monitor this log weekly. The Grounds Worker II position
#60033503 will track temperatures to determine what needs to happen to which windrows. Moisture levels will be
logged during the first 15 day cycle. Small equipment like temperature and moisture meters are kept in the compost
Horticulture Technician's office.
8.5.7 Grounds Worker II (position #60033503) will monitor logs and diary/logs (Compost log 1 and Compost Log 2) and
compile figures for yearly report.
8.5.8 Diary/Logs will be maintained up to date and available for inspection by the Division of Waste
Management during regular business hours at the Zoo's greenhouse and will include: - Temperatures
- Moisture levels
- Additives (fertilizers for nitrogen content)
- Dates of initial mixing, turnings and aging status of each windrow
- Water sample results
- Parasitic wasp application dates
-Sediment pond pumping/dredging/monitoring dates
-Thermometer testing dates
8. 6.) Reporting
8.6.1 Procedure for compiling compost data completed by
compost Grounds Worker II:
-Gather all the compost log sheets for the time period covered. These will be in the actual log book
folders located at the compost site or in a clearly marked folder or envelope in compost Grounds Worker
II's desk.
29

-Tabulate the total materials received from each folder for separate zoo sections. With the exception of
Elephant and a few other special circumstances, these are recorded by type of vehicle or container and
proportion thereof (i.e., '/2 Cushman or 1 trash can). Elephant records in pounds.
-Using the totals for each type of delivery, refer to the standardized measurements compost conversion
formula chart and assign weight in pounds to each. (For instance, 1 trailer of ZOG waste = 711.51b). These
totals are then converted to tons.
-Add up the total waste received for the time period needed. The compost Grounds Worker II totals all
animal waste and all horticulture waste and adds together the total waste received.
-Calculate the total compost produced by adding together the cubic yards of each windrow that has reached
the finished stage. Then convert cubic yards to tons. (finished compost avg. weight is 750lbs per cubic yd.)
-Calculate compost used by subtracting compost on hand from compost on hand at the end of last reporting
period plus compost produced during this time period. (For example, if we had 300 tons of finished
compost on hand on July 1, 2017 and I know that I produced 200 tons this year and now have 400 tons,
then we have used 100 tons. 300-400+200=100)
-Data from these reports will be quantified by category as well as where they are located at the compost site
to facilitate the analysis of the data and to allow for the creation of figures.
8.6.2 A compost report is due by August 1st of each year (covering July 1 — June 30). This report will be prepared by the
Grounds Worker II, the Africa Horticulture Supervisor and approved by the Curator of Exterior Horticulture, who
will submit the yearly report to the Solid Waste Management Branch.
The yearly report includes a form provided by the division of waste management, which includes the following
information:
- Name, address and permit number
- Volume of waste received
- Volume in tons of each type of waste composted and the mixes used
- The volume of finished product generated and how much used. This will be tracked by estimating how much is
left at the on -site and off -site soil mixing/finished compost stockpile and subtracting it from the total product
generated.
- Grade should be recorded according to waste analysis table 1 & 2
- Testing results of final product
- Distribution of final products
• A cover letter should be attached that includes what attachments are present, timeframe and the type of
compost facility we are operating. The cover letter should also include results of tests for Foreign Matter,
Waste analysis reports listing, Compost sediment pond water test results, facility name, permit number,
ID# and Expiration date and signature.
• An attachment for results of monthly temperature monitoring for the period reporting. Temperature
monitoring should be pulled from the log and compiled into the report. Other activities that must be
recorded in the log such as pile turning, temperature/time relationships and water sampling records are
generally not included in the yearly report.
• Each waste analysis report
• Each diagnostics report for coliforms testing
• Statement from Zoo Aquatics Supervisor of water quality testing, no effluent or of water quality testing if
effluent occurs.
• A copy of any procedures if any changes have occurred.
• An attachment for results of sediment pond water level monitoring.
8.6.3 In the past (up until 2016), the Horticulture Department prepared and submitted a "Midterm" compost
report each year, in January. But, according to our compost permit, Tony Gallagher (Branch Head), Waste
Management Composting and Land Applications and John Patrone (Environmental Senior Specialist, Field
Operations Branch, Solid Waste Section NCDENR, Division of Waste Management, this report is not required
unless specifically requested by the agencies listed above due to a change of circumstances.
8.6.4 Copies of all permits, applications, conditions, reports and compost related information is included in the EMS
compost notebook on file at the Horticulture office.
8.7)Testing:
8.7.1 Finished compost will be tested by the North Carolina Department of Agriculture Waste Analysis Lab. Standard
soil analyses should be completed as well as the tests listed below for heavy metals and pathogens. This is not a
standard practice and may not be accomplished unless requested. Since the lab does not test for heavy metals
automatically, heavy metal testing is to be requested on a specific form and since there is a cost, purchasing
30

should be aware of the transaction. Copies of the waste analysis results shall be forwarded to the Solid Waste
Management Division in the annual report and/or every 20,000 tons.
All compost shall be tested prior to use and should not exceed the concentrations given in .1407 (a) table 1 page
13 of the composting rules. Should not exceed concentrations o£
Ar Arsenic 41 mg/kg dry wt.
Cd Cadmium 39 mg/kg dry wt.
Cu Copper
1500 mg/kg dry wt.
Pb Lead
300 mg/kg dry wt.
Hg Mercury
17 mg/kg dry wt.
Ni Nickel
420 mg/kg dry wt.
Zn Zinc
2800 mg/kg dry wt.
Waste samples will be taken from every 10 to 20 square foot segment of each completed windrow. A soil probe is
inserted approximately 2' into the pile. Enough samples are collected to fill a quart -size baggie. The Africa
Horticulture Supervisor is responsible for comparing and documenting the waste analysis reports findings to the
concentration level table for acceptable concentrations. If a windrow does not meet temperature requirements or
samples do not meet analyzed standards, material will be blended into new wastes and re -windrowed. Variants from
acceptable concentrations shall be brought to the attention of the Curator of Exterior Horticulture.
31

APPENDIX A
Methods for the Analysis of Metals
Pollutants
Sample Preparation and Analytical
Methodologies
SW-846*
Arsenic
EPA Methods 3050/3051 - 7061+ 7060
Cadmium
EPA Methods 3050/3051 - 601017131/7130
Chromium
EPA Methods 3050/3051 - 6010/7191/7190
Copper
EPA Methods 3050/3051 - 6010/7210
Lead
EPA Methods 3050/3051 - 601017421/7420
Mercury
EPA Method 7471/7470
Molybdenum
EPA Methods 3050/3051 - 6010/7481/7480
Nickel
EPA Methods 3050/3051 - 6010/7520
Selenium
EPA Methods 3050/3051 - 6010/7741/7740
Zinc
EPA Methods 3050/3051 - 6010/7950
*Test Methods for Evaluating Solid Waste. Physical/Chemical Methods. EPA Publication SW-
846, Second Edition (1982) with Updates I (April 1984) and 11(April 1985) and the Third
Edition (November 1986) with Revision I (December 1987) and Update I (July 1992). The
Second Edition Updates I and II (PB-87-120-291) are available from the National Technical
Information Service, 5285 Port Royal Road, Springfield, VA 22161_ The Third Edition and
Revision I and Update I (Document number 955-001-00000-1) are available from the
Superintendent of Documents Government Printing Office, 941 North Capitol Street, NE,
Washington, DC 20002. Future updates will be noticed in the Federal Register.
32

APPENDIX B
Analytical Methods for Pathogen Testing
Sample Type
Method
ASTM Designation: D 4994-89. Standard Practice for
Enteric Viruses
Recover of Viruses from Wastewater Sludges, Annual
Book of ASTM Standards: Section 11, Water and
Environmental Technology. ASTM, Philadelphia, PA,
1992.
Part 9221 E or Part 922 D. Standard Methods for the
Fecal Coliform
Examination of Water and Wastewater, 18th edition.
American Public Health Association, Washington, DC,
1992
Yanko, W.A., Occurrence of Pathogens in Distribution
Helminth Ova
and Marketing Municipal Sludges, EPA/60011-87/014,
1987. PB 88-154273/AS, National Technical
Information Service, Springfield, VA:[phone].
Part 9260 D, Standard Methods for Examination of
Water and Wastewater, 18th edition, American Public
Salmonella sp. Bacteria
Health Association, Washington, DC 1992; or Kenner,
B.A. and H.P. Clark. Detection and Enumeration of
Salmonella and Pseudomonas aeruginosa, J. Water
Pollution Control Federation, 46(9):2163-2171, 1974.
8.7.2 Foreign matter content testing will occur twice a year by Horticulture staff passing a dried,
weighed sample of the compost through a one -quarter inch screen. Foreign matter should be
separated and weighed. Divide the weight of the foreign matter by the weight of the total
dried sample and multiply by 100.
Man-made inerts shall not exceed 1" in size. If windrow does not meet temperature requirements or samples do
not meet analyzed standards, material will be blended into new wastes and re -windrowed. Foreign matter content
is reported during twice yearly reporting schedule stated previously.
8.7.3 Samples of the composted material will be analyzed for at least one pathogen listed on page 19
compost rules using approved methods at least twice per year. It is desired to test each recently
completed windrow's finished product before moving it to the curing piles. Samples need to be fresh and are
collected in the same manner as waste samples. Pathogen samples will be sent to the lab for fecal coliform test,
not to Vet unless requested. Other pathogen testing will occur as the Veterinarians deem necessary and
appropriate. The Vet staff will notify Horticulture staff if they see problems with pathogens in the compost. If
windrow does not meet temperature requirements or samples do not meet analyzed standards, material will be
blended into new wastes and re -windrowed unless Vet staff recommends a particular action due to the type of
pathogen discovered.
8.7.4 Use of compost in exhibits has been approved by chief veterinarian. A manure -free `turf compost' can also be
used without vet approval, due to it only containing plant waste.
8.7.5 Soil samples are sent to the following address:
NCDA &CS Agronomic Division
Plant/Waste/Solution/Media Section
33

4300 Reedy Creek Rd Raleigh, NC 27607
8.7.6 If the compost sediment pond overflows the Zoo Aquatics department are alerted by the African Supervisor to come and
sample the water from the outflow pipe below the dam. Testing is required when an overflow occurs but only once per quarter.
8.8) Compost Cycle:
a. Provide enough material to fill create an approximately 40' x 18' by 8' high windrow 50' segment
b. Start to take temperatures daily for 15 days three times a week basis. Temperature samples should be taken
approximately 8 samples per windrow or about 1 sample every 40 square foot.
C. Turn pile: Product lifted and dropped to make a reformed windrow. to cascade back into windrows. In this process,
material will re -aerate and reestablish conditions which are suitable for composting
d. Pile must reach temperature of at least 131 degrees and be maintained for 15 days
e. Turn pile five times during these 15 days. Obtain water from portable pump set up at small farm pond or from
sediment basin. If water is needed from the sediment pond only add before the pathogen reduction temperature
period.
f. After the required turning of new windrows, 5 times in 15 days is complete; pile temperature should stabilize at
110 degrees to become the finished compost product. Windrow temperatures are checked weekly until leveling off at 110
degrees. This indicates the pile is ready to be tested. Testing of finished windrows are normally done in January and August.
After tests come back and are satisfactory the pile is moved to the other side of pad into the aging section of finished
compost.
f. Final sample to be taken and analyzed. Grounds Worker II will determine when the pile has matured sufficiently
and has been approved to move to curing area.
g. Move compost to curing pile after one month (approximate time it takes to sample and receive results) if the
waste sample test are satisfactory. Product is considered finished and is usable if tests are satisfactory.
8.9) Water Quality Compost Site
8.9.1 In order to eliminate overflows of the water holding pond on the compost site, the Zoo has installed a direct
connection of the sedimentation pond to the Asheboro sanitary sewer system. Overflows from this sedimentation
pond are now pumped through a 3" PVC forced main pipe to he closest sanitary sewer connection. (Please see
Attachment H for the letter from the City of Asheboro granting us permission to discharge our overflow into the
city's sanitary sewer.) Attachment G shows correspondences with Ken Pickle of the DEQ stating that we do not
need a permit with DEQ.
8.9.2 Grounds Worker II position #60033503 is to monitor and log information as follows: Compost Log 1 contains
monitoring documentation and Compost Log 2 contains dredging/pumping documentation, as well as each site
visual inspection of sediment pond, the status of the water level in the sediment pond, and any effluent flow
associated with it. See compost reports and logs under 8.5.1 for the names and types of log books maintained.
8.9.3 Sediment pond water should be tested by Aquatics within 30 minutes of a rain event if there is effluent from the
sedimentation pond pipe. Aquatics division is to perform analytical monitoring for process wastewater
discharges (see table 7 & 8 under General Permit) quarterly. If no effluent is present at the rain event when
testing is expected this should be noted and sent to Horticulture office to include in the yearly report.
8.9.4 In the past bales of hay were used in rows to improve filtration of water going into the sediment pond. A new
berm system will now be used around the outside edge of the sediment pond vegetation buffer to increase
sediment retention and filtration. Stone filters and wood chips will be placed along the berm periodically in low
spots to increase porosity and prevent water from ponding on the compost site. Diversion ditches will be added
at the north end of the compost site to reduce the amount of water that coming into the compost site and ending
up in the sediment pond. These improvements will be completed in the 2016 calendar year. Please see figure
below.
These improvements should eliminate overflows from happening in the future.
34

8.10) Sediment Pond
8.10.1 If sedimentation pond pumping system is out of service follow this procedure:
-Grounds Worker II position #60033503 is to alert Horticulture Supervisor when sediment pond water level
is reaching within 24" of its overflow pipe limits.
-The zoo has permission to discharge to the Asheboro Wastewater Treatment Plant and the Asheboro
sanitary sewer.
-Depth of basin pumping — Basin is to be pumped to 36" below the outlet pipe. The basin is not to be
pumped unless 24" or less below the outlet pipe.
If sedimentation pond pumping system is in Manual Mode follow this procedure:
-The system shall be placed in manual mode for normal operation to settle water and to allow flocculation
to occur so the total suspended solids will settle out before pumping. Electrical panel will not be changed
until the Horticulture Supervisor has talked with the Maintenance Supervisor or either Facilities
Engineering and Architect Technicians. Capture of runoff is desired instead of automatic drawdowns but
still not allowing effluent to escape the sedimentation pond. The intent is to manually pump the pond down
after a rain event instead of during the rain event per City of Asheboro recommendations.
-Grounds Worker II is to alert Horticulture Supervisor when sediment pond water level is reaching within
24" of its overflow pipe limits. This is the trigger or indication the system is in manual mode or has failed
and a draw down is neccessary or the system needs evaluated by Maintenance staff.
8.10.2
35

8.10.3 With approval from supervisor, Grounds Worker II will call Maintenance Supervisor or
designee to evaluate the system. If the system is in manual mode and not failed, Maintenance
electrical tech shall operate the system to drain the sediment pond to low level set point
(invert of vault where pumps suck air) or will decide if Grounds Worker II (if trained) will
operate pumping system to accomplish a desired drawdown to avoid effluent discharge.
8.10.4 If system has failed, Maintenance shall repair the system and inform the Grounds Worker II
who is responsible for informing his Supervisor of when repairs are complete.
8.10.5 When repairs are complete Maintenance Electrical Technician shall let Grounds Worker II
know if system is in automatic or manual mode and shall display the correct sign or indicator
at the electrical panel.
8.10.6 If sedimentation pond pumping system is in Automatic Mode follow this procedure:
-Grounds Worker II and Aquatics Staff are to monitor the level of the sediment basin. -Grounds Worker II
logs the sediment pond level and enters it in the Compost Log Book #2.
-Grounds Worker II is to alert Horticulture Supervisor when sediment pond water level is reaching within
24" of its overflow pipe limits or the red alarm light is on at the electrical service panel. This is an
indication the system has failed.
-Grounds Worker II will call Maintenance Hot Line (Admin. Assistant to Operations) to ask for
Maintenance Electrical Technician to evaluate the system. This would be an emergency if rain is expected
and a nonemergency if rain is not expected.
-If system has failed, Maintenance shall repair the system and inform Grounds Worker II who is
responsible for informing his Supervisor of when repairs are complete.
-When repairs are complete Maintenance Electrical Technician shall let Grounds Worker II know if system
is in automatic or manual mode and shall display the correct sign or indicator at the electrical panel.
8.10.7 The Horticulture Supervisor or designee is expected to monitor weather for frequency and total amounts of
rainfall and the effect on the water level of the compost sedimentation pond.
8.10.8 Compost procedure for mixing pond sludge when available and acceptable into active windrows: Grounds
Worker II position #60033503 will add sludge at a ratio of 10:1, 10 units of regular composting waste to 1 unit
of sludge, when creating new windrows. Grounds Worker II position #60033503 will document the mixture by
logging this action in Compost Log Book #2 located in Grounds Worker II office in the section labeled "Sludge
Mixing." Facilities engineering and Architectural Technician for the Zoo will determine if compost
sedimentation pond needs dredging to maintain original volume. Facilities engineering and Architectural
Technician for the Zoo will inspect the pond every two years for status. If and when pond is dredged and sludge
becomes available a waste analysis test and a soil analysis test of the sludge removed from the sedimentation
pond at compost will be conducted. The Grounds Worker II will send analysis for testing using the parameters
listed in section set out in the compost rule book.
8.10.9 Horticulture staff are expected to grade and add gravel to maintain access to monitor/measure sediment pond if
conditions at the site become too muddy. Grounds Worker II is to visually inspect the compost pond on a daily
basis or after rain events. Measurements and effluent discharges should be logged when they occur.
9.0) Pest Control:
9.0.1 Fly program when needed to control noxious insects:
-Use approximately 20,000 fly parasitoid wasps per treatment
-Flies are ordered by Africa Horticulture Supervisor in March. Shipment is received every other week May
through October.
-Grounds Worker II or designee will register shipments in Compost Log Book 2 when they are applied.
-Usually Grounds Worker II position #60033503 or designated employee places the shipment in the newest
compost pile only. Using a pitch fork upper layer of material is pulled back exposing maggots. A small
amount of parasite casings are sprinkled in each opened area. The open area is then covered back up.
-Usually approximately 10,000 fly parasitoid wasps are placed down a side of the compost pile.
9.0.2 See Dog and Cat Policy and Policy and the Procedure on Control of Native Small Predators and Feral Dogs at
NCZ for protocols on the control of stray dogs, cats and indigenous wild animals.
9.1) Sanitation:
9.1.1 Mow, cut down, weed eat or bush hog all weeds so that flowering does not occur
9.1.2 Leave a 15-20' natural succession buffer around the sediment pond for erosion control and for an additional nutrient
catching zone
9.1.3 Mow perimeter of the site and on the sediment pond dam top once per month from March - November.
36

9.1.4 The compost site will not be used as a dump for construction debris, stock piled soil piles, and purchased soil
amendment piles.
9.1.5 Move old bamboo stock piles to active windrows or brush pile if not used within 1 year. Old mixing waste dumpster
is now used as the stockpile for reusable bamboo poles.
9.1.6 Methods in how to reduce the particle size are by chipping or by outside tub grinder contractor.
9.1.7 The Zoo's compost site is not in operation during hurricanes, heavy rain, snow, freezing rain or other adverse
conditions. The equipment is not used during these times at the compost site but used in other sections of the park
when needed. Horticulture waste is not generated during these extremes and animal waste is normally not delivered
until more favorable weather conditions exist. Priority is to feed and protecting the animals rather than cleaning stalls
or removing manure from exhibits.
9.2) Other:
9.2.1 If windrow does not meet temperature requirements or samples do not meet analyzed standards, material will be
blended into new wastes and re -windrowed.
9.2.2 Waste materials that can be composted are covered under general permit conditions:
Permanent Compost Facility -
-All manures from the Zoo except primates or contaminated waste
-Animal bedding materials (straws, mulch, other organics, etc.)
-Restaurant waste
-Source separated paper
-Green waste (pruning's, grass clippings, leaves, brush, tree trimmings etc. from landscape activities)
-Brush/Wood, firewood
-Organic fibers, bedding, mulch, used mulch
-Food scraps or spoiled and left over food from the commissary such as infrequent
1. Outdated packaged fish
2. Undigested food
3. Cardboard
4. Incinerator Ash and chunks of bone (or "sterile minerals")
9.2.3 Any unusual material requested to be composted or stored or taken to the compost site that is not covered under the
solid waste permit shall not be added to the compost site until permission has been obtained from the Solid Waste
Management Branch. Requests should be routed through the Africa Horticulture Supervisor. Compost facility surface
pad may need occasional grading. Do not dig into the surface when operating compost facility whenever possible.
9.2.4 A copy of the current permit with operating conditions is found in the EMS compost notebook found in the
Horticulture office
9.2.5 Periodic inspections of the compost facility should be handled by the Africa Horticulture
Supervisor. The compost site inspector is John Patron, lohn.patrone(g7ncdenr.goy. The new DWM compost
supervisor is Tony Gallagher, [e-mail] but is subject to change. The contact information for Solid
Waste is:
Tony Gallagher
Solid Waste Section
NC DENR-Division of Waste Management
1646 Mail Service Center Raleigh, NC 27699-1646
919-707-8246 (Phone / Fax)
[e-mail]
http://portal.ncdenr.org/web/wm/sw The
physical address at Green Square is:
NCDENR
Division of Waste Management 217 W.
Jones St.
Raleigh, NC 27603
9.2.7 The Africa Horticulture Supervisor is responsible for reporting any significant change of status of the samples,
permits, complications, savings, or achievements to the Exterior Horticulture Curator & Supervisors, Animal Staff
Supervisors and Animal Curators, Veterinarian, Grounds Worker II position #60033503.
9.2.8 The Africa Horticulture Supervisor will be responsible for making sure all erosion control and cleanliness measures
around facility are accomplished. A Bermuda grass turf buffer is maintained around the compost site. Turf is
established monitored, repaired and over -seeded as needed by Horticulture staff under the direction of the Africa
Horticulture Supervisor.
37

9.3 Sign Requirements:
Sign requirements are listed in EMS _H_3.19.3 NCZP Organic Waste Table document including sedimentation pond
electrical panel signage needs. Labels for sedimentation pond pumping system should be color coded green = automatic, Red
= out of service and Yellow = Manual. Grounds Worker II #60033503 will notify Supervisor of signage needs, Africa
Horticulture Supervisor is responsible for requesting signage. Signage should be large font, easily read, large sized
waterproof graphics that stand in back of and can be seen over the various piles. Signs should be replaced if old, erected
again if damaged, removed if no longer needed, or otherwise adjusted if the compost site needs change by the Horticulture
Technician I position #60033503.
9.3.1 New gate and rails are now installed at the compost ramp. New Signage "Gates are to remain closed when not
in use" is installed and must be maintained on compost ramp gates.
u U NC Zoo Compost Site
0
a
7/16112
G7Area
250.
Finr om
S.'
a d
Soil ' ng
Fence
rNle
❑iversion B
Browse
hoard Cun
P
Fin shed COmpoS
Service Support Access
Mate Is Reo i,ing o g Ramp HayBal Ring
0 5 dimentation Ba in
Lon i dro Piles O Pond Sludge ding Pile
Zoo Construction Sto a rea o x6 O Septic Tan (Pumps
0 getation Buff e & Ha Bale Filter
Win row Pil s 3C a 0 0 0 F] Compost
_ControI Panel
r LJ LJ 0 13
11,,t,r Panels
Curing Piles 2l x 35'
at 3"PVC Force Main P N7
Sewer Connection Pipe 1C
}
preventer log pile
38

Attachment D
Organic Waste Table - Revision 16
39

•
Name: NCZP Organic Waste Table
Corresponding Standards:
ISO 14001:2015 8.1, 7.2, 6.1.3, 6.1.2, 9.1.1
Number: EMS H—3.19.3
Revision Number: 18
o
—
Revision Date: 2/5/2020
Prepared By: Jody Stancil
Created: 1/25/2004
Approved By: Jody Stancil
Effective Date: 2/5/2020
'
Reviewed Date: 2/5/2020
Signature:
Review Frequency: Every year
Next Review Due: 2021
Date:
Page 40 of 12
Revision 0 - Discussed and approved by Vet: Mike Loomis, Barb Wolf and Hort: Gin Wall
Approval dates: 2/4/04, 2/12/04
Revision 2 distributed
Organic Wastes the Zoo's Compost Permit and Operating Procedures allows and how they are standardized for measurement:
Need discussion with animal management staff why waste are not being brought to site, or if logs are not being filled out according to area or
if keeper retraining as to what is acceptable at site needs to be organized. Also animal management staff needs to confirm separating non -
organic waste from organic waste that can be recycled is policy.
AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
STANDARDIZED
EVIDENCE OF
ANIMALS PER
PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
Males, Females,
FACILITY
Unknowns
African Plains and
All manures from the Zoo except primates
1 Trailer /
500 pounds =
Yes
48.41
African Plains
and felines or contaminated* waste but
Pickup = Barn
2.5 cubic yards
(Birds, Rhinos
Prop barn/Holding
mostly animal bedding materials (straws,
A
& Hoof stock)
New Plains Barns
used mulch, other organics, organic
Maxi Dump =
1000 pounds
Site 36 & 37
fibers, bedding.)
1 Gator =
700 pounds =
.4 cubic yards
AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
STANDARDIZED
EVIDENCE OF
ANIMALS PER
PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
Males, Females,
FACILITY
Unknowns

Africa Plains Barn
Small amounts of compost. Brought at
1 Can—
75 pounds = .25 cyds
A
the same time as NPB. Food scraps are
1 can=
20 pounds = .5 cubic
Site 36 & 37
not composted (they are meat products, so
yards
are fall/winter; the materials are changed
as needed (not on set schedule)
All manures from the Zoo except primates
—10-20 pounds
Yes
—5-10 birds
and felines or contaminated* waste and
animal bedding materials (straws, used
mulch, other organics, organic fibers,
bedding.)
Food Scraps or spoiled and left over food,
undigested food.
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Animal bedding used fall/winter only, so
measurement is much less in
spring/summer.
Arctic Fox
All manures from the Zoo except primates
1Trailer /
6,500 pounds =
Yes
1.1
Include in site 16
and felines or contaminated* waste and
Pickup
5 cubic yards
Rocky Coast
Rocky coast
animal bedding materials (straws, used
Mammals
mulch, other organics, organic fibers,
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
STANDARDIZED
EVIDENCE OF
ANIMALS PER
PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
-
FACILITY
Males, Females,
Unknowns
41

New Avian
All manures from the Zoo except primates
1 Can =
65 pounds =
Yes
—50 birds
Propagation near
and felines or contaminated* waste and
.25 cubic yards
Vet area
animal bedding materials (straws, used
Site 6
mulch, other organics, organic fibers,
—10-15 pounds
bedding.)
Food Scraps or spoiled and left over food,
undigested food
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Aviary
Food scraps or spoiled and left over food,
1 Can =
50 pounds =
Yes
—100-120
Site 26
undigested food
.25 cubic yards
birds
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Black Bear
All manures from the Zoo except primates
1 Can =
75 pounds =
Yes, included in
0.3
Site 20
and felines or contaminated* waste and
.25 cubic yards
prairie log
animal bedding materials (straws, used
mulch, other organics, organic fibers,
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Commissary
Food scraps or spoiled and left over food,
1 Can =
10 pounds =
yes
N/A
Site 32
undigested food
.25 cubic yards
Does not include animal parts or animal
weighed by commissary
meat products such as rat parts, bird parts,
before transport
raw meat or fish parts.
AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
STANDARDIZED
EVIDENCE OF
ANIMALS PER
PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
-
FACILITY
Males, Females,
Unknowns
Desert — All inside
All manures from the Zoo except primates
NO
85.92.16

exhibits of
and felines or contaminated* waste and
nocturnal and
animal bedding materials (straws, used
reptiles but not
mulch, other organics, organic fibers,
cats
bedding.)
Site 24
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Elephant
All manures from the Zoo except primates
1 Gator =
700 pounds =
Yes
2.4
Site 38
and felines or contaminated* waste and
.4 cubic yard
animal bedding materials (straws, used
mulch, other organics, organic fibers,
Dump Truck =
4,200 pounds =
bedding)
2.4 cubic yards
Grizzly
All manures from the Zoo except primates
1 Can =
75 pounds =
Yes, included in
2.0
Site 23
and felines or contaminated* waste and
.25 cubic yards
Prairie logs
animal bedding materials (straws, used
mulch, other organics, organic fibers,
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Hay Barn near Vet
All manures from the Zoo except primates
N/A
area
and felines or contaminated* waste and
(no animals)
Site 7
animal bedding materials (straws, used
mulch, other organics, organic fibers,
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
43

AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
PORTATION
STANDARDIZED
MEASUREMENT
EVIDENCE OF
DELIVERY TO
COMPOST
FACILITY
ANIMALS PER
EXHIBIT
-
Males, Females,
Unknowns
Horticulture
Green waste (grass, leaves, brush, tree
yes
N/A
Site 39, 40, 42, 13
trimmings etc. from landscape
activities)
Brush / wood
1 Cushman /
1,200 pounds =
Pickup =
1.6 cubic yards
Firewood
1 Arbor truck =
300 pounds / cubic yard
Mulch or used mulch
1 Arbor truck =
750 pounds / cubic yard
17 cubic yards
Prunings / Grass / Clippings
1 Arbor truck =
750 pounds =
1 cubic yard
1 Cushman /
75 pounds =
Gator =
.25 cubic yard
Paper towels i.e.- Source separated paper
1 Can =
1 Pick up =
750 pounds =
1 cubic yard
1 Waste can--
2 pounds
Medical building
All manures from the Zoo except primates
None
None
Yes (minimal
Site 2
and felines or contaminated* waste and
amount)
animal bedding materials (straws, mulch,
other organics, organic fibers, bedding.)
Would need
Does not include animal parts or animal
protocols to
meat products such as rat parts, bird parts,
separate out
raw meat or fish parts.
primate and feline.
Mike agreed to
coordinate
AREA DESCRIPTION OF WASTE ACCEPTED TRANS- STANDARDIZED EVIDENCE OF ANIMALS PER
44

PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
-
FACILITY
Males, Females,
Unknowns
Old Mammal
All manures from the Zoo except primates
No — Old mammal
—5-10
prop/Avian
and felines or contaminated* waste and
prop -Eliminate
holding near Vet
animal bedding materials (straws, used
area
mulch, other organics, organic fibers,
Yes — Avian
Site 4
bedding.)
holding (entered
Eliminate Mammal
Food scraps or spoiled and leftover food,
with Aviary wastes)
undigested food
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Polar Bear
All manures from the Zoo except primates
1 Trailer/Pickup
6500 pounds = 5 cubic
Yes
1.1
Included in Site 16
and felines or contaminated* waste and
=
yards
Rocky coast
animal bedding materials (straws, used
mulch, other organics, organic fibers,
Included in Rocky
bedding.)
Coast mammals
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Prairie /
All manures from the Zoo except primates
Truck
Yes
Prairie 5.8
Rocky Coast
and felines or contaminated* waste and
Buckets
animal bedding materials (straws, used
Trailers
Rocky Coast
Site 21/ Site 16
mulch, other organics, organic fibers,
(Sea Lion,
bedding.)
1 Can =
75 pounds =
Eagle, Puffin)
.25 cubic yards
35.36
Rocky Coast
1 Can =
44 pounds
Seal/Sea Lion
(Seals, Falcon)
4.0
Falcon
—50
45

AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
STANDARDIZED
EVIDENCE OF
ANIMALS PER
PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
-
FACILITY
Males, Females,
Unknowns
Reptiles / Fish /
All manures from the Zoo except primates
None
None
No
Streamside
and felines or contaminated* waste and
2.1.19
animal bedding materials (straws, used
Site 18 & 19
mulch, other organics, organic fibers,
Fish = 630
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
SSA Restaurants
Food scraps or spoiled, left over food,
1 - 30 gal Trash
10-30 pounds
Yes
N/A
undigested food and compostable dinner
can =
Site 25 included in
ware.
Horticulture's logs
Streamside Otter /
All manures from the Zoo except primates
No
Birds / Snakes
and felines or contaminated* waste and
8.12
Site 18 & 19
animal bedding materials (straws, used
mulch, other organics, organic fibers,
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
STANDARDIZED
EVIDENCE OF
ANIMALS PER
PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
-
FACILITY
Males, Females,
Unknowns
Swamp — all but
All manures from the Zoo except primates
None
None
no
22.34.16
Cougar
and felines or contaminated* waste and
animal bedding materials (straws, used
Site l l
mulch, other organics, organic fibers,
beddin .
46

Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
KidZone (birds,
All manures from the Zoo except primates
Can
75 pounds =
9.5
opossum, hooded
and felines or contaminated* waste and
.25 cubic yards
rats, snakes,
animal bedding materials (straws, mulch,
turtles, bearded
other organics, organic fibers, bedding.)
dragon)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
Site 12
raw meat or fish parts.
Red River Hog
All manures from the Zoo except primates
Yes
0.2
Site 29
and felines or contaminated* waste and
(included in zog)
animal bedding materials (straws, used
mulch, other organics, organic fibers,
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Warehouse and all
Cardboard
GMC Truck=
225 pounds =
Currently not
N/A
sections
1 cubic yard
accepting
Site 49 & 33
8 cubic yard capacity =
cardboard. Now it
1,800 pounds
is considered
recycling.
47

AREA
DESCRIPTION OF WASTE ACCEPTED
TRANS-
STANDARDIZED
EVIDENCE OF
ANIMALS PER
PORTATION
MEASUREMENT
DELIVERY TO
EXHIBIT
COMPOST
-
FACILITY
Males, Females,
Unknowns
Wildlife Rehab
All manures from the Zoo except primates
Composted in
Not measured
Not sure if any
6.8.2
and felines or contaminated* waste and
home
records are kept
Site 3
animal bedding materials (straws, used
composter at
mulch, other organics, organic fibers,
building
bedding.)
Wolf / Red Wolf
All manures from the Zoo except primates
None
None
No
11.12
Holding
and felines or contaminated* waste and
animal bedding materials (straws, used
Site 23 / Site 51
mulch, other organics, organic fibers,
bedding.)
Does not include animal parts or animal
meat products such as rat parts, bird parts,
raw meat or fish parts.
Zebra / Ostrich /
All manures from the Zoo except primates
1 Trailer /
711.5 pounds =
yes
3.5
Giraffe
and felines or contaminated* waste and
Pickup =
1.77 cubic yards
animal bedding materials (straws, used
Site 29
mulch, other organics, organic fibers,
beddin .
*Contaminated waste should be determined or defined by Veterinarians and communicated to those staff handling organic waste at the time of
contamination.
Organic waste from Areas Not being considered at all:
❑ Vet Quarantine areas (Site 1)
❑ Vet Medical biohazard waste (Site 2)
Organic waste from Areas not composted as of 2/15/04 but being considered for off site composting through service agreement:
48

❑ Lion/Chimp (Site 28)
❑ Baboon (Site 27)
❑ Pavilion — all exhibits and types of animals includes Batelur Eagle (Site 44)
❑ Forest Glade (Site 45)
❑ Lemur (Site 44)
❑ Desert — cats (Site 24)
❑ Ocelot
❑ Streamside bobcats (Site 19)
❑ Swamp -cougar (Site 11)
❑ Mammal propagation near Vet area (Site 8)
❑ Red Wolf
Estimated Total by George Adams:
5 Tons or 34 cy per week
Sign Requirements at compost facility:
❑ Animal Waste
❑ Plant Waste
❑ Brush pile
❑ Brush pile
❑ Bamboo stock pile
❑ Aging Pile
❑ Finished Compost
❑ Large tree trunks and stumps
❑ Fire Wood 18" or less
❑ Turf Compost
❑ Cardboard
❑ Gate signs: 7:00 a.m. — 4:00 p.m., Authorized personnel only, no unauthorized dumping. No hazardous wastes accepted.
❑ Per inspector's request, at the Compost road entrance shall be visible the following sign: NC Zoo - Compost Area / Permit No. 76 - 04 SWC /
Contact Information: Curator of Horticulture Number 336-879.7420. It was installed on Aug 19th 2016.
49

How the Wastes are separated at the Compost site:
1. All manures except Medical Bldg.
2. Plant wastes
3. Plant waste - Turf compost
4. Brush pile - decomposed
5. Brush pile — to be chipped
6. Bamboo stockpile
7. Fire wood piles that are of appropriate size of 18" or less
8. Large tree trunks and stumps
9. Cardboard — It was removed from compost and added to a recycle list. It was installed a special dumpster for it at gate 1.
Under composition of material each person should state whether thev are from
- Elephant - Black Bear
- Zebra/Ostrich/Giraffe - Grizzly
- Commissary - Wolf
- Aviary Food Scraps - Reptiles/Fish/Streamside
- Plains or Plains Prop - Vet center: Ashes
- Prairie
- Horticulture (what specifically)
-Swamp
- SSA Food Scraps
Communication List:
- Rocky Coast (Polar Bear, Artic Fox, seal, sea lion)
- Other (any other approved item specifically)
Horticulture Staff (Curator of Exterior Horticulture and Supervisors)
Keeper Staff. Keeper III's - (Chris Shupp, Jodi Wiley, Wendy Wadsworth, Chris Lasher, Chris Goldston, Nancy Kaufman, Dennis Cordier),
Commissary (Katherine Hagen)
Curators: (Erin Ivory, Jennifer Ireland, Debbie Zombeck, Dustin Smith)
Veterinarians: (J.B. Minter, Katie Delk)
Permit Signer (Director Patricia Simmons)
Safety Officer: Karen Auman
Zoo wide memo to all personnel
50

Attachment E
North Carolina Zoo Compost Site Map
*See page 7 for Aerial Site map
*See page 14 for Site Layout map

Attachment F
Specifications for 2008 Kamatsu WA200 Wheel Loader
52

WA200-6 WHEEL LOADER
SPECIFICATIONS
MENGINE
Model ..............................Komatsu
SAA4D107E-1
Type ..................................
Water cooled, 4-cycle
Aspiration ..........................Turbocharged,
aftercooled
Number of cylinders ......................................
4
Bare x stroke .................
107 mm x 124 mm 4.21" x 4.88"
Piston displacement ..........................
4.46 Itr 272 inal
Governor ...............................
All -speed, electronic
Horsepower
SAE J1995 ..........................Gross
95.2 kW 128 HP
ISO 9249/SAE J1349
.....................Net 94 kW 126 HP
Hydraulic fan at maximum speed ............Net 91 kW 122 HP
Rated rpm .....................................
2000 rpm
Fan drive method for radiator cooling ..................Hydraulic
Fuel system ..................................Direct
injection
Lubrication system:
Method .........................Gear
pump, force -lubrication
Filter .......................................
Full -flow type
Air cleaner ...................Dry
type with double elements and
dust evacuator, plus dust indicator
EPA Tier 3 and EU Stage 3A emissions certified.
TRANSMISSION
Type ........Hydrostatic, 1 pump, 2 motors with speed range select
Travel speed: kmlh mph
Measured with 17.5-25 tires
1st
2nd
3rd
4111
Both Forward
and Reverse
4.0 - 13.0
2.5 - BA
13.0
8.1
20.0
12.4
34.5
21.4
Measured with 20.5-25 tires
1st
2nd
3rd
4th
Both Forward
and Reverse
4.4 - 14.3
1 2.7 - 8.9
14.3
8.9
22.0
13.7
38.0
23.6
AXLES AND FINAL DRIVES
Drive system ................. .............. Four-wheel drive
Front ...................................Fixed, semi -floating
Rear .........................Center -pin support, semi -floating,
24' total oscillation
Reduction gear .............................Spiral bevel gear
Differential gear ..........................Torque proportioning
Final reduction gear ..............Planetary gear, single reduction
B..RA....IIC.ES
_ ..................................................................,...........,.....,..............,..,...........
Service brakes .........................Hydraulically actuated,
wet disc brakes actuate on four wheels
Parking brake ........Wet, multi -disc brake on transfer output shaft
Emergency brake ...............Parking brake is commonly used
STEIERING SYSTEM
Type .... ........................ Full -hydraulic power steering
Steering angle ................. 38' each direction (40' end stop)
Minimum turning radius at
the center of outside tire ..................... 5100 mm "Ill
HYDRAULIC SYSTEINI
Steering system:
Hydraulic pump ............................Gear
type pump
Capacity .............
85 Itrlmin 22.5 U.S. gal/min at rated rpm
Relief valve setting ............
20.6 MPa 190 kgflcm2 3,000 psi
Hydraulic cylinders:
Type ............................Double-acting,
piston type
Number of cylinders
................................... 2
Bore x stroke ...............
70 mm x 453 mm 2.8" x 17.8"
Loader control:
Hydraulic pump ............................Gear
type pump
Capacity ........................
54 Itrlmin 14.3 U.S. gal/min
Relief valve setting ............
20.6 MPa 210 kgflcm2 3,000 psi
Hydraulic cylinders:
Type ............................Double-acting,
piston type
Number of cylinders -bore x stroke:
Boom cylinder ..........
2- 120 mm x 673.5 mm 4.7" x 26.5"
Bucket cylinder
.......... 1- 130 mm x 493 mm 5.1 " x 19.4"
Control valve ...............
. ................. 2-spool type
Control positions:
Boom .........................Raise,
hold, lower, and float
Bucket ......................
..... Tilt -back, hold, and dump
Hydraulic cycle time
(rated load in bucket)
Raise.........................................5.9
sec
Dump.........................................1.4
sec
Lower (Empty) ..................................
3.6 sec
►` I SERVICE REFILL CAPACITIES
Cooling system ..........................
17 Itr
4.5 U.S. gal
Fuel tank ..............................
177 Itr
46.8 U.S. gal
Engine ...............................
15.5 Itr
4.1 U.S. gal
Hydraulic system .........................
58 Itr
15.3 U.S. gal
Axle (each front and rear)
.................. 18 Itr
4.8 U.S- gal
Transfer case .............................
5 Itr
1.3 U.S. gal
B13UCKET SELECTION GUIDE
Bucket till factor
FINE
nr yd'
115 Ina 95%
Light Material Bucket
y. 2 4 3.1
(Scooping and loading of light material)
R
Stockpile Bickel
2.0 2.6
(Loading and excavating of soil, sand and a
variety of other cam manly handled material)
m 1 7 2 2
Excavating Bucket
Loading anol excavating of crushed or blasted ruck)
IAlyd3 1686 2023 2360 2698 31135 3372 3709
kg?m' 1000 1200 1400 1600 1800 2000 2200
Material density
10

DIMENSIONS
17.5-25 tires
20.5-25 tires
Tread
1930 mm
64"
1930 mm
5'4"
Width over tires
2375 mm
7'10"
2470 mm
8,1"
A
Wheelbase
2840 mm
9'4"
2840 mm
9,4"
B
Hinge pin height,
at max. height
Standard Boom
3635 mm
11'11"
3705 mm
127'
High Lift Boom
4225 mm
1310"
4295 mm
14'1"
C
Hinge pin height,
at carry position
Standard Boom
410 mm
1'4"
380 mm
1'3"
High Lift Boom
600 mm
2'0"
570 mrn
110"
0
Ground clearance
425 mm
1'S"
495 mm
11B"
E
Hitch height
870 mm
2'10"
940 mm
3'1"
f
Overall height, top of the stack
2725 mm
8'11"
2795 mm
97'
G
Overall hei ht ROPS cab
3110 mm
10'2"
1 3180 mm
1115"
Measured with 20.5-25-12PR (1-3) tires, ROPSTOPS cad
Hiuh Lift Boom
Stockpile Bucket
Excavating Bucket
Light Material
Excavating Bucket
Bucket
Bait -On
Bolt -On
Balt-On
Boll -On
Cutting Edges
Cutting Ell
Cutting Edges
Gutting Ed es
Bucket capacity: heaped
2 0 1
1.7 1
2.4 ma
1.7 m3
2.6 yd3
2.2 Xd3
3.1 Yd3
2.2 yd3
1.7 m3
1.4 m3
2.0 m3
1.4 m3
struck
2.2 yd3
1.8 Yd3
2.6 d3
1.8 yV
Bucket width
2550 mm
2550 mm
2550 mm
2550 mm
8'4"
8'4"
8,4"
8'4"
Bucket weight
785 kg
740 kg
875 kg
740 kg
1,731lb
1,631lb
1,929lb
1,631lb
Dumping clearance, max. height
2830 mm
2885 mm
2725 mm
3480 mm
and 45" Ourrip angle*
913"
9'6"
8111"
117
Reach at max. height and 45° dump angle*
930 mm
875 mm
1035 mm
970 mm
31"
2-10"
TY
3'2"
Reach at 2130 mm 7' clearance
1410 rnm
13& rnm
1460 mm
1955 mm
and 45' dump angle*
4'8"
47'
47
6'4"
Reach with arm horizontal and bucket level*
2145 mm
2065 mm
2295 mm
2580 mm
TO"
6191,
TV
815"
Operating height (fully raised)
4955 mm
4835 mm
5065 mm
5430 mm
16'3"
15'10"
167'
17'9"
Overall length
6895 mm
6515 mm
7050 mm
7485 mm
227'
22'4"
23'2"
247'
Loader clearance circle (bucket at carry,
11700 mrn
11660 min
11780 mm
11840 mm
outside corner of bucket)
38'5"
38'3"
38'8"
38'10"
Digging depth: 0'
65 mm
65 mm
65 mm
200 mm
2.6"
2.6"
2.6"
7.9"
250 mm
235 mm
275 mm
365 mm
10'
9.8"
9 3"
10.8"
14.4"
Static tipping load: straight
9690 kg
9750 kg
%40 kg
9270 kg
21.363lb
21,495lb
21,032lb
20,43715
40" full turn
8345 kg
8405 kg
8195 kg
7980 kg
18,397lb
18,530lb
18,067lb
17,593lb
Breakout force
93.2 kN
102 5 kN
81 A kN
93.6 kN
9500 kgf
10450 kgf
83CO kgf
9545 kgf
20,94415
23,038lb
18,298lb
21,043lb
Operating weight
10550 kg
10505 kg
10640 kg
10765 kg
23,2591b
23,160lb
23,457lb
23,733lb
* At the end of B.O.C.E.
All dimensions, weights, and performance values based on SAE J732c and J742b standards.
Static tipping load and operating weight shown include lubricant, coolant, full fuel tank, BOPS cab, and operator,
Machine stability and operating weight affected by counterweight, tire size, and other attachments.
Apply the following weight changes to operating weight and static tipping load,
11

Attachment G
Letter from Division of Water Quality
55

From: Pickle, Ken
Sent: Friday, November 20, 2015 2:47 PM
To: Gallagher, Tony
Cc: Parker, Gerald C
Subject: FW: NC Zoo Compost Report - July 2012 - 1 of 6
Hi Tony,
I understand you all are renewing the Zoo compost permit. Please note that back in 2012 Gerry Parker of the Zoo
managed the project to direct all on -site flows to the City of Asheboro sanitary sewer system. The key objective of that
project in 2012 was to avoid a surface water discharge, and hence avoid the requirement for an NPDES discharge permit
from DEMLR's Stormwater Permitting Program.
See below my reference to the anticipated completion of that project, and the result that the facility would not need a
permit from us. As long as the facility continues to send all site waters (wastewater and stormwater) to the POTW,
rather than to a surface discharge, there is no need for our permit.
DWM inspector's might make it an inspection point on your visits to the site. If there is evidence of a discharge to
surface waters, then the circumstances have changed from what the Zoo reported to me in 2012. In that case the
facility would be discharging without a permit, and potentially would be subject to enforcement action.
However, as it stands now the Zoo's last report to me was that all flows would be going to the POTW. In that case, and
as agreed to before, the Zoo does not need a permit from our program.
Best regards,
Ken
From: Pickle, Ken
Sent: Monday, July 23, 2012 9:44 AM
To: Owen, Cathy <[e-mail]>; Matthews, Dexter <[e-mail]>; Parker, Gerald C
<[e-mail]>; gradams <[e-mail]>; Jernigan, Hugh <[e-mail]>; Kearns,
Martin <[e-mail]>; Scott, Michael <[e-mail]>; Pugh, Maryjoan
<[e-mail]>; Purnell, Brian <[e-mail]>; Stancil, Jody <[e-mail]>; vawall
<[e-mail]>
Cc: Bennett, Bradley <bradley. ben [e-mail]>; Georgoulias, Bethany<[e-mail]>;
Homewood, Sue <[e-mail]>; Matthews, Matt <[e-mail]>
Subject: RE: NC Zoo Compost Report - July 2012 - 1 of 6
Hi Cathy,
Thanks, this is helpful for me to generally understand more about your operation. It's always helpful to understand
more of the physical facts, and more about how you comply with requirements from another Division within NCDENR.
However, please drop me from distribution on future reports. DWQ's interest in your site has been addressed with
Gerry's progress on the connection to the City of Asheboro's sewer system. Essentially, since you have stopped all
discharges to the surface waters of North Carolina, we have no interest/authority as to a continuing review function on
your reports to DWM.
Gerry: 1'd still like to come look at the finished project for the connection to the Asheboro sewer system. Can we
schedule sometime in August?
56

Thanks,
Ken
Ken Pickle
Environmental Engineer
NCDENR I DWQ I Stormwater Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
512 N. Salisbury St, Raleigh, NC 27604
Phone: [phone]
Fax: [phone]
Email: [e-mail]
Website: http://Portal.ncdenr.org/web/wq/ws/su
** Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be
disclosed to third parties unless the content is exempt by statute or other regulations.**
From: Owen, Cathy
Sent: Monday, July 23, 2012 8:37 AM
To: Matthews, Dexter; Parker, Gerald C; gradams; Jernigan, Hugh; Pickle, Ken; Kearns, Martin; Scott, Michael; Pugh,
Maryjoan; Purnell, Brian; Stancil, Jody; vawall
Subject: NC Zoo Compost Report - July 2012 - 1 of 6
TO: Dexter Matthews, Gerry Parker, George Adams, Hugh Jernigan, Ken Pickle, Martin Kearns, Michael Scott, Mary Joan
Pugh, Brian Purnell, Jody Stancil, Virginia Wall
FROM: North Carolina Zoological Park — Horticulture Office
This is the first of several a -mails that will contain the documents required for the NC Zoo Compost Site Report for July
2012.
There will be approximately 6 e-mails (including this one) due to the large number of attachments. If you have any
questions or have problems opening the attachments, please let us know. This report is being sent digital only unless
otherwise required or requested.
Thank you,
Cathy Owen
North Carolina Zoological Park
Administrative Assistant
4401 Zoo Parkway
Asheboro, NC 27205
Phone:[phone]
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed
to third parties unless the content is exempt by statute or other regulation.
57

Attachment H
Letter from Division of Energy, Minerals, and Land Resources
58

Woods, Rachel C
From: White, Glen
Sent: Friday, January 15, 2016 8:21 AM
To: Woods, Rachel C
Subject: RE: NCZoo Compost Site
Rachel
made my recommendation on the Friday after we met. I told Ken Pickle in Raleigh about the improvements you were
planning to make to further reduce potential discharge of wastewater but that there would always be a small chance of
a spill and that the Zoo was willing to do whatever was necessary to ensure clean-up if that ever happened. The Zoo
would also notify DEQ as soon as there was a spill and initiate clean-up immediately. I recommend approval permit
renewal with that understanding from the Zoo.
Glen White
Environmental Specialist
NCDENR Winston-Salem Regional Office
Division of Energy, Minerals & Land Resources
450 Hanes Mill Rd — Suite 300
Winston-Salem NC 27105
glen. white rincdenr.gov
[phone]
From: Woods, Rachel C
Sent: Thursday, January 07, 2016 3:46 PM
To: White, Glen <[e-mail]>
Subject: NCZoo Compost Site
Hello
I just wanted to follow up with the site visit that we had with you on 12-9-15. During your visit to our compost site at the
NCZoo you stated that you would recommend to Raleigh that we did not need a stormwater permit. I was wondering if
you had heard back from them. I am trying to get our compost permit renewal turned in. If you haven't heard back from
Raleigh yet could I possibly get an email back from you stating what you told us on your site visit?
Thanks
Rachel C. Woods
Curator of Exterior Horticulture
NCZP Horticulture
NC Department of Natural and Cultural Resources
NC Zoological Paris
4401 Zoo Parkway
Asheboro, NC 27205
P: 336.879.7420
F: 336.879.2891
www.nczoo.org
rachel.powers(cunczoo.org
North Z Carolina "m&
Connect your life to wildlife
59

Attachment I
Flow acceptance letter for settling pond leachate from the City of
Asheboro — Water Resources Division
60

Water Resources Division
146 N Church Street
PO Box iw6
Asheboro, NC 27204-iio6
December 18, 2015
Cttp of Robeboro
Tel: [phone] Ext. 258
3 s,
i
Fax:336-626-I218
oPCFyBpF 7A � 9
Miriam Cattabriga — Curator of Horticulture
NC Zoological Park
4401 Zoo Parkway
Asheboro, NC 27205
Re: Flow Acceptance Letter for NC Zoo Compost Facility Settling Pond leachate.
Ms. Cattabriga:
This correspondence is sent to advise that the City of Asheboro will continue to accept discharge
of wastewater flow from the referenced leachate settling pond for the compost facility at the NC
Zoo. However, the City has concerns with the current operation of the facility with regards to
the volume of discharge related to wet weather events and its impact on the City Sanitary Sewer
Collection System.
Efforts must be made at the compost facility to reduce the volume of leachate discharged during
a wet weather event. These efforts include increasing leachate detention time as illustrated in the
drawing for the proposed improvements submitted on December 15, 2015 utilizing diversion
ditches, berms and stone filters. If these efforts don't reduce the impact to the collection system,
further improvements will be required, including increasing the storage volume of the existing
settling pond and adding flow control to the pump system.
The City will be glad to consider other alternatives to reduce high flow during wet weather
events. If no measures succeed in reducing the impact of flow on the collection system, the City
will have no option except to terminate this wastewater discharge. The City looks forward to
working with you in this endeavor and will do everything possible to assist in making the
compost facility a successful operation. Please contact me if you need any additional
information or assistance.
Sincerely,
P� 10 y
Michael D. Rhoney, PE
Water Resources Director
Home of the NC Zoological Park
61

Signature page of applicant —
Name of facility %U l�('OVI nc <�Iff
I certify under penalty of law that this document and all attachments were prepared under my
direction or supervision and that the information provided in this application is true, accurate, and
complete to the best of my knowledge.
I understand that North Carolina General Statute 130A-22 provides for administrative penalties of up
to fifteen thousand dollars ($15,000.00) per day per each violation of the Solid Waste Management
Rules. I further understand that the Solid Waste Management Rules may be revised or amended in
the future and that the facility siting and operations of this solid waste management facility will be
requiMd to comply with all such revisions or amendments.
ture Prih Name D to
Title
Business or organization name

From:
Sent:
To:
Cc:
Subject:
Attachments:
Donna,
Thank you very much!
Murphy, Kelly
Wednesday, May 27, 2020 5:53 AM
Wilson, Donna J
Stancil, Jody
RE: NC ZOO Compost
2020 Compost Application Final + Signature.pdf
Here is our completed Compost Application. The hard copy was sent with yesterday mail.
If there is anything that you find that needs addressing, please let Jody Stancil and I know and we will take
care of it.
Thank you so very much for your assistance.
Kelly J. Murphy
EMS Coordinator
Administration to Operations Department
North Carolina Zoo
336-879-7527 (office)
336-416-5822 (mobile)
336-879-7503 (fax)
[e-mail]
www.nczoo.org
4401 Zoo Parkway I Asheboro, North Carolina 27205
North
Carolina
Email correspondence to and from this address is subject to the North Carolina Public Records Law and may be disclosed
to third parties unless the content is exempt by statue or other regulation.
Facebook Twitter Instagram YouTube
From: Wilson, Donna J <[e-mail]>
Sent: Tuesday, May 26, 2020 4:24 PM
To: Murphy, Kelly <[e-mail]>
Subject: RE: NC ZOO Compost
Hi Kelly —Yes, please email to me.
Thanks, Donna
i