SDTF-92-11_PERMIT_APPLICATION_20240324

APPLICATION FOR A PERMIT TO OPERATE A SEPTAGE DETENTION OR
TREATMENT FACILITY
North Carolina Department of Environmental Quality
Division of Waste Management — Solid Waste Section
1646 Mail Service Center, Raleigh, NC 27699-1646
Operator and Facility Information
1. Applicant Greasecycle LLC
Address 3900 Commerce Park Dr. Raleigh NC 27610 (Site)
3901 Commerce Park Dr. Raleigh NC 27610 (main office)
Phone [phone]
2. Contact person for site operation (if different from applicant): _
Title or position Phone
Address
3, Landowner Dylan Gehrken c/o DG Property Holdings LLC
Address 3900 Commerce Park Dr. Raleigh NC 27610
4.
N
Site Location: County Wake State Road Number US-64 Business
Directions to site: Take New Bern Ave exit (US-64b) off 1-440, turn right at Corporation Pkwy and right
again onto Commerce Park Dr.
Is the location on a permitted Septage Land Application Site? No
If yes, give the site permit number here:
Indicate whether project is: new renewal X modification
For a permit renewal or modification, indicate the existing permit number SDTF 92-11
permit expiration date 11/14/23
and the
7, Attach written, notarized landowner authorization to operate a septage storage or treatment facility
form signed by the landowner (if the permit applicant does not solely own the property). If a
corporation owns the land use a corporate landowner authorization form. If Limited Liability
Company owns the land, use a limited liability company landowner authorization form.
8. Aerial photograph scale 1 inch = 400 feet with site property lines accurately located on the photograph
must be enclosed (if 1 inch = 400 feet is not available, 1 inch = 660 feet may be substituted).
9. Vicinity map (county road map showing site location).
10, Land application site or wastewater treatment plant to be used after treatment or storage:
(over)

Facility Information: the following information shall be included with the application form.
1. Facility to be used for: Storage
Treatment X
2. Types of septage to be stored or treated:
Domestic Septage Grease Trap Pumpings X
Portable Toilet Waste Commercial/Industrial Septage
3, Types of treatment to be provided: pH Adjustment (lime stabilization) x
Screening Other (attach explanation if other)
4. A description of the proposed detention or treatment facility including the size, type, and number of
structures to be used and how those structures will be constructed or installed (use additional
paper to explain, if necessary): see attached
5, An explanation of how septage will be discharged into and removed from the facility (use
additional paper to explain, if necessary): Greasecycle pumps out grease traps for restaurants with
it's fleet of vac -trucks. In the facilitym, we will store, process by decanting, and seperate the FOG from waste
water. We will refine the brown grease for sale to the renewable fuel markt. The wastewater will by treated
and disposed via the monitored sewer connection to the municipal WWTP.
An explanation of how any leaks or spills at the facility will be cleaned and how odors will be
controlled (use additional paper to explain, if necessary): see attached
III. Certification
I hereby certify that:
1. The information provided on this application is true, complete, and correct to the best of my
knowledge, and
2. 1 have read and understand the N.C. Septage Management Rules.
3. 1 am aware of the potential consequences, including penalties and permit revocation, for
failing to follow all applicable rules and the conditions of a Septage Detention or Treatment
Facil ty permit,
3/14/24
SI rtatur Signature of company official required) Date
Dylan Gehrken Owner , President
Print name
Title
Note: This application will not be accepted for review until all parts of the application are complete.
S:Solid_Waste\cla\septage\forms\SDTF-Application & Authorization\SDTF Permit Application -Jan 2016.docx
Rev 0 1 -07-16

Limited Liability Company Landowner's Authorization to Operate a
Septage Detention or Treatment Facility
North Carolina Department of Environmental Quality
Division of Waste Management - Solid Waste Section
1646 Mail Service Center, Raleigh, NC 27699-1646
I hereby certify that the undersigned limited liability company, DG Property Holdings, LLC, owns
1.62 acres of land located 3a00 Comore rp Pack Dr. Ralpiah NC2761 D and identified
by Parcel ID 0222299 (book and page of recorded deed or tax map parcel)
and that the limited liability company agrees to allow Greasecycle LLc (SDTF permit
applicant) to use said land for a septage detention or treatment facility for a period of (length
of time) beginning (give date), and that on behalf of the limited liability company, I
have read the North Carolina Septage Management Rules*. Greasecycle LLc (name of
limited liability company) further understands that no septage may be stored or treated until the Division of
Waste Management has issued a permit for a detention or treatment facility. The above described property
is owned solely by the undersigned limited liability company, or jointly with None
(name all co -owners, or state none).
Date; 3/14/24
Limited Liabili�Com any (Print Name)
North Carolina
Wake
Dylan Gehrken - Member
orized Member or Manager) Print Name and Title
County
1, Alisha Owen , a Notary Public for said County and State do hereby certify that
Dylan Gehrken (name of authorized member or manager of limited liability company)
personally appeared before me this day and, being first duly sworn, acknowledged that he (she) is a (the)
Member (member or manager) of DG Property Holdings, LLc , a limited liability
company, and that by authority duly given and as the act of the limited liability company, the foregoing
instrument was signed in its name by its authorized member (member or manager) , and that the
statements contained therein are true. Witness my hand and-offieial.seal, this the 14th day of
March 2024 c�1r1A.1, o :t
Notary Public •.� } '.
My Commission expires:11
CouN•�
* 15A N.C. Admin. Code 13B Section .0800
Rev. 01-07-16

1
�4 0
Raleigh
December 20, 2023
Justin Grich
Greasecycle LLC
3900 Commerce Park Dr.
Raleigh, North Carolina 27610
Subject: Raleigh Water Industrial User Permit Renewal, IUP# GRCY
Dear Justin Grich,
In accordance with the conditions set forth in the City of Raleigh Sanitary Sewer Use Ordinance, I am
forwarding a City of Raleigh Industrial User Permit. This permit is renewed pursuant to the requirements
of State pretreatment regulations (15NCAC 2W.0900) with an effective date of January 1, 2024 and an
expiration date of December 31, 2028.
Significant changes to this permit include:
1) Flow limit increased from 0.03 MGD to 0.04 MGD.
2) Industry will now be considered a Significant Industrial User.
3) Mercury and cyanide monitoring are no longer required due to historic low results.
4) Added requirement that flow metering devices be able to interface with telemetry.
5) Several required detection limits were revised to be more in line with the current PQLs
published by DEQ April 8, 2022. (Please update to method 200.8 if you have not already done
so).
Please review this permit thoroughly and if any parts, requirements, or limitations contained in this
permit are unacceptable to you, you have the right to an appeal meeting upon such written request
within 30 days following receipt of this permit, identifying the specific issues to be contended. Unless
such demand is made, this permit shall be final and binding.
This permit does not affect the legal requirement to obtain other permits which may be required by
separate State or local regulatory agencies. This permit hereby rescinds any previously issued Industrial
User Discharge Permit you may have received from the City of Raleigh regardless of whether or not the
permit you may be holding has expired. If you have questions concerning this permit, please contact me
at 919-996-3715 or via email at sarah-gornickl'@raleighnc.gov.
Sinc rely,
Sarah Gornick
Industrial Pretreatment Coordinator
cc: File

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SDTF=92=1 1
Source: Bing Maps aerial imagery, ESRI, (c) 2010 Microsoft Corporation and its data suppliers; site location, NC DENR
Division of Waste Management.
Map created by NC DENR Division of Waste Management, Compost and Land Application Branch for permitting purposes only.
Sept. 2012

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Transfor-ninb Waste... Rebuilding Soils °'
August 91" 2019
Mr. Dylan Gehrken
Founder & President
GreaseCycle LLC
RE: Residuals acceptance
Dear Mr. Gehrken,
1cCi' Environmental Systems
634 Christian Chapel Church Rd
New Hill, NC 27562
919-362-1 161 1 (Et 91 9-362-1 141
www.mcgillcoinpostxonn
Based on analytical you have previously submitted, McGill Environmental Systems of NC, Inc.
(Permit # SWC19-06) will continue to accept grease residuals from Grease Cycle LLC.
Transportation, and acceptance schedules shall be mutually agreed upon by both parties.
Best regards,
Sean Fallon
Business Development Manager
McGill Environmental Systems
sfallon mcgilicorn�post.-4l�,.;',�;
919-406-4270

4e�x F
Operation Manual
Grease Waste Dewatering and Decanting Facility for Greasecycle LLC
A. Facility Description: See drawings by MacConnell and Associates, P.C.
Grease Trap Waste (Brown Grease) Treatment Equipment:
• One 22x7x3.5' Bar Screen/ Pump Tank
• One 1&7e00 gal heated tank F 600
• One,&.&Pegal storage tank with attached 7.5 hp mixer
• One 15,000 gal storage tank with attached 15 hp mixer 13; a00 pa/
• Two Solids Handling 8 HP Trash Pumps
• One 7.5 HP Air Compressor
• One 125 HP 150 PSI Boiler
• One Polymer Mixing and dosing unit with low speed mixer and polymer injection (metering)
pump.
• One Lime Mixing and dosing unit with low speed mixer and polymer injection (metering)
pump.
• One Stormwater Submersible Pump
• One 20 yard dewatering box
• One 35 yard dewatering box
• Ball Valves to control directional flow of grease and or effluent
• Refrigerated Composite Sampler
• Metering V-Notch Weir with Ultrasonic Flow Meter to measure effluent flow to sanitary
sewer
Definitions:
• Bar Screen/Pump Tank: An open top concrete vault with grates or bars used to screen large
debris and hold screened grease to transfer to tanks. Screenings are placed in trash dumpster.
• Heated Tank: Tank used to heat screened grease trap waste prior to dewatering, cooking or
storage.
• Storage Tanks: Tanks used to store grease trap waste after the valuable grease has been
rendered out. These tanks mix water and food solids before being pumped into dewatering
boxes.
• Transfer Pump: Pump used to transfer grease throughout the facility with the use of 3 inch
flexible EPDM Hose.
• Air Compressor: Equipment used to various equipment throughout the facility.
• Boiler: Produces steam used to heat the grease trap waste to get valuable brown grease to float
to top of tank.
• Polymer: Chemical utilized to separate the liquid and solid fraction in grease
• Lime: Chemical used to reduce acidity of grease trap waste prior to being injected with polymer
and dewatered.

• Polymer and Lime Injection Pumps: Designed to meter activated chemical inline to react with
grease trap waste prior to dewatering.
• Dewatering Box: Metal container with internal screens that is utilized to separate the liquid and
solid fraction in septage and grease.
• Refrigerated Composite Sampler: Equipment used to sample effluent discharging to the sanitary
sewer.
• Metering V-Notch Weir and Ultrasonic Flow Meter: Meters effluent flow to sanitary sewer.
• Submersible Pump: Pump used to pump stormwater out of tank farm into Grease Trap Waste
Tank
B. Facility Operations (Grease Trap Waste):
1. Truck unloading and transfer of grease for settling and dewatering: Use bar screen/pump tank
and transfer pump to off load the trucks, screen out large solids, and transfer grease to desired
tanks.
a. Pre -Operation Procedures will be as follows:
i. All areas of the dewatering facility will be inspected prior to use each day. The
facility will be inspected for damaged equipment, leaks, properly functioning valves
and pumps, etc.
ii. The doors on the dewatering box will be checked to ensure that they are closed
tightly prior to dewatering.
iii. Polymer Levels will be checked to confirm that adequate material is available for the
next dewatering event.
iv. All polymer and lime pipe connections will be inspected for proper operation.
V. All tanks will be inspected for leaks.
b. Unloading: The driver shall follow these unloading procedures:
i. Pull truck up or back up to bar screen/pump tank.
ii. Attach off-loading hose to truck's discharge valve.
iii. Check bar screen/pump tank for loading capacity. Check all screens for
obstructions and clean out if necessary. Check for any obstructions that would
prevent normal water flow.
iv. Attach transfer pump to bar screen for transfer by flex hose for transfer of grease
i nto gal heated tank. 9, aao a
V. Check all valves. All valves except the ones to be used should be closed.
vi. Open truck valve to begin discharging effluent into bar screen/pump tank. Never
leave the discharge area once you have opened the truck discharge valve. If the bar
screen/pump tank begins to fill up, close the truck discharge valve until the bar
screen tank clears out. Start transfer pump to provide needed capacity in bar
screen tank. If necessary use a rake or shovel to clean out the screen before
reopening the truck discharge valve.
vii. As the effluent moves through the bar screen, large items of trash and solids will be
trapped prior to discharge into heated tank.

viii. When the truck is empty, close the discharge valve and disconnect the hose.
ix. Clean bar screen and dispose of trash in the onsite dumpster.
2. Heating/Cooking: The grease will be heated in the 9000 gal tank prior to the bottom material of
water and solids being transferred to one of the two wastewater/food solids tanks by flex hose
to the 15,000 gal or 16,500 grease trap waste storage tanks. Once 6000 gal of brown grease has
accumulated on the top of this 9000 gal tank, a tanker will be loaded with this material out of
the top side port of the tank and sold.
3. Dewatering: Facility uses one 20 yard dewatering box with an additional 35 yard dewatering
box, one polymer mixing tank with low speed mixer, one lime mixing tank with low speed mixer,
and two chemical metering pumps. The material that goes into these roll off boxes comes from
either the 15,000 gal grease trap waste storage tank or the 16,500 gal grease trap waste storage
tank and is transferred to the boxes by flex hose.
a. Operation procedures will be as follows:
i. Verify all valves are closed. Open valves needed to transfer non-dewatered material
to dewatering units. Open valves needed to transfer dewatered liquids.
ii. Check polymer and lime systems for proper operation.
iii. Start the grease moving through lime then polymer system and take a visual sample
of material entering dewatering box to determine the appropriate mixture of lime
and polymer are resulting in good thimble size flocs. If flocs are too small, try adding
more lime first. If no improvement, add more polymer. Target PH is 8. If material
looks slimy or shiny, reduce polymer.
iv. The water will drain from the dewatering box into catch basin and gravity flow into
the local sanitary sewer.
V. The dewatered solids will sit for approximately 24 hours in dewatering box to drain.
After the solids pass the paint filter test, the solids may be land filled or disposed of
in another acceptable manner as approved by NC Division of Solid Waste, Septage
Division. If it does not pass the paint filter test it will be allowed another 24 hrs to
dry and if after 48 hours of total drying time it still does not pass it will be mixed
with an absorption material and then hauled to its final destination. If the
dewatering process does not work, the dewatering process will be cut off and the
liquids will be pumped from the dewatering box by a vacuum truck and returned to
the bar screen/pump tank to run back through the system.
vi. A scraper rake will be used to remove any solids that do not come out of the box
when it is dumped. All solids will be rake from the box when dumped. The inside of the box
and all screens will be pressure washed and cleaned. The wash water from this process will
then be run through the system.
4. Spill Control: Grease spilled at the bar screen/pump tank during unloading will be cleaned up
and directed back into bar screen tank. All storage tanks are above ground and leaks can be
seen and repaired quickly. All valves are visible from the working area and all pumps can be shut
down quickly if a rupture occurs. All tanks are contained within the concrete spill containment
berm. Any spills will be cleaned up as soon as discovered. Any spill in the tank pad of yellow

grease in excess of 5 gallons will be pumped into yellow grease tank. Otherwise, it will be
pumped into a grease trap waste tank.
5. Odor Control: Keeping the area clean is the most important aspect of odor control. In addition
to cleanliness, raw material will be covered as much as possible, closed tanks will be used to the
greatest extent possible, and spills will be immediately cleaned up.
6. Keep vegetation trimmed that is within 6 feet of the plant
7. Waste from other pumpers: Waste from other pumpers will be accepted from 8:OOAM to
4:OOPM M-F. Authorization to discharge forms will be submitted to NC Division of Solid Waste
Septage Division.

4. See plans on file with NCDENR as there have been no changes to the facility.
:KF
4 5. Gathering restaurant grease trap waste and used cooking oil. The two waste streams are
coarsely filtered and treated to separate the grease and cooking oil from the water and
settled solids. The water and solids phase is filtered via dewatering containers and the
resulting filtrate is discharged to the sanitary sewer system. The resulting filtered solids
are incorporated as compost feedstock for beneficial reuse. The screened inert solids are
disposed at McGill Environmental.
6. Greasecycle LLC Sp f Slug Control Plan
I. General Information: Greasecycle recycles used cooking oil and grease trap waste from
restaurants. Cooking oil is recycled by coarse screening and batch settling through heat. Grease
trap waste is processed through batch settling, coarse screening, and a polymer flocculent
dewatering method. Discharge will be between 0 and 25,000 gallons per day in batches that occur
over a 4 hour period.
Address: 3900 Commerce Park Dr. Raleigh NC 27610
Contact. -Dylan. Gehrken, Managing Member at 434-996-7692 or [e-mail]
II. Facility Layout: See attached site plan. a
III. Material Inventory: Used cooking oil. Grease: trap waste. Facing the front of the building (street
view). In the first bay is a dewatering box that holds grease trap waste solids that are to be either
land filled or composted. In the tank farm behind the building, the flat bottom 10,000 gal tank
farthest to the left (once again from the street view perspective) holds the decanted food/water
combination that has separated from the grease trap waste. To the right of this tank is a 20,000 gal
pre -cook tank filled with grease trap waste. To the right of this tank is a 10,000 gal cone bottom
tank that contains used cooking oil. To the right of this tank is a cone bottom 10,000 gal tank that
contains brown grease. All, containers are. mild steel.. --
IV. Spill Prevention Equipment: All containers are inside a concrete spill containment berm. There
is no floor drain in this spill containment zone. If a spill occurs, here is the clean-up protocol.
1) Stop source of spill: If hoses bursts, close. valve. If valve fails, hook hose up to other side
of cam -lock and divert material to another tank. If tank has a. leak use vac truck to suck
material out of leak while-dra ing_rnaterial in tank into. another_ tank_ If unloading-_truuck
has site glass break, put vaccum on truck cap site glass with black iron threaded nipples
that are stored in the tool box of each truck.
2) Contain Spill: If spill exceeds 5 gallons suck up with pump truck. If it is below 5 gallons
simply clean with kitty litter.
3) Clean-up: Do not hose down. Clean spill by spreading kitty litter or absorbent equivalent
to absorbs spilt fluids. Put remaining dry material in dumpster.
V. Reporting: In the event of a spill, the city of Raleigh will be notified by phone call immediately.
Ryan Faw at 919.996.3679 will be called immediately followed by an email to -
yan.Faw 0raleighne-go_v_. If no answer call City of Raleigh Public Works at [phone].
VI. Training: Each new employee is trained with the spill response protocol. An annual refresher
session keeps existing employees mindful and current on the best ways to prevent and mitigate
spills.

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Source: Bing Maps aerial imagery, ESRI, (c) 2010 Microsoft Corporation and its data suppliers; site location, NC DENR
Division of Waste Management.
Map created by NC DENR Division of Waste Management, Compost and Land Application Branch for permitting purposes only.
Sept. 2012

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`GREASE CYCLE° CC3!aO!52
Operations Manual

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
Greasecycle Operations Manual
Table of Contents
Format and Structure
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
This operations manual is divided into three sections. These three sections cover company
policies, production operations, and process flow.
Sectio
n
Section Title
Revision
Date
Issue
Date
Page
Number
Table of Contents
3/07/22
3/07/22
2
Acronyms
3/07/22
3/07/22
3
Scope
3/07/22
3/07/22
4
References
3/07/22
3/07/22
5
1.0
Company Policy
3/07/22
3/07/22
6
2.0
Production and Maintenance Operations
3/07/22
3/07/22
7-10
3.0
Production Process Flow - BFD
3/07/22
3/07/22
11
Appendix A NC DEQ, Best Management
Practices
3/07/22
3/07/22
12

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
Greasecycle Operations Manual
Acronyms
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
Operations Manual
OM
Grease Trap Waste
GTW
Publicly Owned Treatment Works
POTW
Waste Water Treatment Plant
WWTP
Brown Grease
BG
Used Cooking Oil
UCO
Dissolved Air Flotation
DAF
Equalization water
E
Spill Prevention, Control, and Countermeasure Plan
SPCC

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
Greasecycle Operations Manual
Scope
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
The Greasecycle policies contained in this operations manual apply to key aspects of used oil
and grease trap waste collections and treatment operations for the production facilities located at
the Raleigh, NC and Charlotte, NC.
Greasecycle is engaged in the business of collecting and refining used vegetable oils and animal
fats that then are sold into the green biofuel market, such as biodiesel and/or renewable diesel.
Our company collects used cooking oil, refines it, and sources it as a feedstock into the biodiesel
industry. We also pump out and clean restaurant grease traps & jet the lines to keep our
customers' kitchens clean & odor -free. We render out usable brown grease from the grease trap's
mixture of water, food solids, and grease. The " brown grease" is then sold as bunker fuel for
ships. All of the wastewater is processed, and the food solids are composted locally.
Providing restaurants with clean, secure, and easy -to -use oil collection containers helps keep the
restaurants sanitary and safe. Pumping out and cleaning grease traps keeps restaurants compliant
with their local municipality and free of bad odors or drain backups that can be quite disruptive
to business. Our combined services keep restaurants clean, green, and efficient. Consolidating
our services eliminates some of the many headaches that inevitably arise from running a
successful restaurant and we're more than happy to help.
This operations manual provides a presentation of the company management policy and
operations to Greasecycle's customers and serves to inform them of the specific controls
implemented to assure a quality product.
4

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
References
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
The list below provides some of the NC municipalities ordinances regarding grease interceptors
and they are liable to change.
Apex, NC: Sec. 12-194. - Grease interceptors.
Charlotte, NC: Sewer Use Ordinance Chapter 23 of the Charlotte City Code, Article III, Section
23-80.
Raleigh, NC: The City Code in Section 8-2119 states: "All food preparation or serving facilities
and all vehicle maintenance facilities connected to the City's sanitary sewer system shall install,
maintain, and keep in continuous operation a grease trap interceptor. The interceptor shall be
sized in accordance with standards established by the Raleigh Public Utilities Department". See
Details 5-40 and 5-41. The facilities where grease trap interceptors are located must have records
on -site and available for staff review, indicating the history of their grease trap maintenance.
Failure to comply with the requirements of this section of the Code, will result in the issuance of
a Notice of Violation, Civil Penalty assessment, and, if necessary, temporary or permanent
interruption of water, sewer, and/or reuse service from the City of Raleigh.
k,

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
Greasecycle LLC Company Policy
GRITTY
We persevere through the stickiness.
HUMBLE &
®� PROUD
r We admit our mistakes and take
Ipride in the work we do.
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
DECISIVE
We consider what's best for the
company a the customer and get shit done.
`SCRAPPY
We use our existing resources
fr creativity to solve problems quickly.

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
Production Operations
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
Greasecycle operates a grease trap waste treatment facility in Charlotte, NC. This facility shall
maintain and serve local restaurant grease traps and prevent them from overflowing into the city
sewer.
Unit operation: Receiving GTW
Trucks arrive at the Greasecycle facility carrying either used cooking oil or GTW. Trucks
carrying UCO will offload through a trash screen and finer screening dedicated to this liquid
waste stream. Trucks carrying GTW will offload through a different trash screen finer screening
dedicated to this liquid waste stream.
Unit operation: Settling Phase
Both liquid streams will then be pumped to one of the two gravity settling tanks, dedicated to the
UCO and GTW product streams. After the material is held in the settling vessel, water is
decanted from the grease stream to maximize oil yield.
Unit operation: Oil refining Phase
For the UCO, yellow grease is separated from any additional emulsion and pumped to the yellow
grease truck for product sale.
GTW Pre -Centrifuge Heated Settling
After the material is screened, the grease trap waste is pumped into one of the three Grease Trap
Mix tanks. With the heating coils inside the tanks, they are heated by steam up to 170 degrees
and allowed to settle the solids to the bottom, brown grease emulsion to the top, and relatively
clean water in the middle. The middle layer of water goes to the pre-daf tank and then to the daf
after pH adjustment and polymer addition. The brown grease on the top goes to the emulsion mix
tank and then to the centrifuge. The solids layer on the bottom accumulates in the tank through 3
cycles of the above heating and decanting until the mixer is then turned on in this tank, the lime
stabilization happens in situ and the materials is sent to the dewatering trailer after being injected
with a polymer. Any material leaving this tank is no longer considered a septage because it has
been raised to 170 degrees for 4 hours thereby pasteurizing the material.
Unit operation: Water Treatment Phase
Safety requirement: All operators must wear a protective dust mask during this process
The water decanted from each settling tank is transferred to a holding tank.
Operator will add lime to this water stream and adjust the pH.
VA

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
Production goal is to get the material in our "waste water tank" to a pH of between 7 and 9; this
is when our process is most effective. We achieve this in a few steps.
Turn the tank mixer of the "waste water tank" on.
This ensures that all the material in the tank becomes a complete homogenous
slurry
Tank mixer switch is outside in the tank farm, mounted next to the tank
Recirculate the material from the "waste water tank" to the bar screen (where our waste
water enters the plant)
Recirculating the water allows us to physically test pH of the water at any given
time
• Start adding lime to the waste water
This can be done 2 ways:
1. Create a lime slurry in the lime mixing tank and inject it into the recirculating mixture
2. Directly add the 501b bags into the recirculating mixture and physically mix it with a push
broom
(IN GENERAL it takes roughly 1 — 501b bag of lime per/1,000gal of waste water. If
the tank has 17,OOOgal in it, expect to add at least 17 bags of lime.)
Continue adding lime and recirculating the waste water until the pH reaches a 7 to 9.
Once the material in the "waste water tank" has reach its proper pH we can move to the
"adding polymer" phase
Unit operation: DAF Phase
The next step for the waste water is the dissolved air flotation process. As part of this process,
the water is treated with a polymer additive. The polymer is the binding agent used to remove the
suspended solids out of the waste water mixture. These bound or removed solids are referred to as
"flocks."
Here are the operations for adding polymer:
Polymer mixture is created by adding "neat" polymer and water to a mixing tank.
a. "neat" polymer is polymer without water that has been pulled directly out of the
delivered 55gal drum
b. In general we add 2 gallons of "neat" polymer to 250gal of water.
2. With the material in the waste water tank is between 7 and 9 pH, it can be directed it to
the dewatering boxes. Before the material reaches the dewatering boxes the polymer
mixture is directly injected into the slurry
3. To inject polymer into our "slurried" mixture, use a small air diaphragm pump
a. To give the pump air, turn the small ball valve on the air manifold bank until the
pump is operational
b. Turn off the pump when finished
U

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
4. Once the polymer is injected into the "slurried" mixture it immediately goes to work
grabbing the suspended solids and turning them into "flocks"
5. To change the amount of polymer injected turn the globe valve appropriately; open for
more and closed for less. A small change in the valve direction has a large impact.
6. Everything about this entire process is directly related to the "flocks", size, amount,
and the shape
7. Too much or too little polymer and you will NOT have good throughput
8. Once you have achieved a good "flock" and the clean water is now separating from the
solids, it is important to maintain this flow until the dewatering box is full or you have
emptied the entire waste water tank.
9. Water that has been through this clarification process can now be released to the city
sewer
Unit operation: Maintenance of Dewatering Box
• The dewatering box is a giant sieve used to capture "flocks" or solids, while allowing
clean water to drain and go down the sewer.
• All material hauled to the composting facility will pass the paint filter test
• The boxes are returned by the hauler from the composting facility every morning after
they are picked up. The boxes need to be opened up and pressure washed with the hot
water pressure washer. The cleanliness of the box is directly related to the throughput of
the material. The cleaner the screens, the better the throughput.
• Once the box is cleaned, close and lock the doors to the dewatering box before starting
the dewatering process.
Unit operation: Process Monitoring
• Check routinely and confirm that fuel in the trash pumps does not run out
• Check routinely and confirm that polymer mixture does not run out
• Check routinely and confirm that the pH of the material entering the dewatering box
throughout the entire process; material should be between a pH of 7 and 9
• Check routinely and confirm that the "flocks" are appropriately sized and look good
• Do not overfill a dewatering box
9

RDQFci CLFci
3900 Commerce Park D 235 W Liddell S!
Raleigh NC 2 6I0 Charlotte, NC 28206
Production Operations — Block Flow Diagram
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10

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
OdorNector Mitigation and Security
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
A "no trespassing " sign will be clearly posted at all entrances to the property. An 8 ft fence with
razor wire encircles the entire site. Security cameras are also posted throughout the site.
All tanks containing grease trap waste are vented to a Chlorine scrubber. Additionally the
centrifuge has a hood that pulls in odor vapors as well. After neutralizing the odor causing
sulphur hydroxide and free fatty acid aerosols, the air stream is exhausted through a 42 inch
stack that extends 5 feet above the roof. The area downwind by about 300 ft is a railroad and self
storage facility along with an unmanned telecom building. The exhaust from the stack has no
mal-odors but does smell slightly of a swimming pool.
The dewatering trailer will be washed down at the composting facility where it is dumped.
The washwater from powerwashing the trucks is all under our canopy and contained by curbing
and sloped concrete. That material drains to our grease trap waste vault and is processed through
our plant.
The inert solids from the receiving screen are dumped into a 4 yard trash container, we sprinkle
powdered lime over the inert solids to minimize odors and rodent vectors.
When offloading our trucks, we keep the trucks neutralized for as long as possible before
pressurizing and blowing out the bottom solids out of the tank.
11

RDU Facility CLT Facility
3900 Commerce Park Dr 235 W Liddell St.
Raleigh NC 27610 Charlotte, NC 28206
Spill Avoidance and Containment
• The offloading area is under a canopy and contained with curbing and concrete slopes so
that any spills, large or small drain to the 6,000 gal grease trap receiving vault.
• All tanks are outfitted with pressure sensors that read out on a display interface near
within a line of site of where the drivers offload. This read out shows the driver what
percent full the tanks are. An audible alarm and strobe light are activated when a tank
reaches 92.5% capacity. 2.5% capacity is to allow for expansion with heat. The additional
5% is for a margin of error and safety.
• All tanks are brand new and all tanks are top filled to avoid the potential of someone not
closing a valve and then the entire contents of the tank backflow to grease trap vault.
• All material will be hard -piped, there will be no hoses with camlocked fittings prone to
popping off when the gaskets deteriorate.
• The attached stamped spill containment calculations follow the rationale that was
discussed with Adam Ulishney over email and he confirmed his acceptance of the
cascading method described by our engineer. This email exchange was between Aug 20
2021 and Aug 24 2021.
Record Keeping
(u) Record keeping for detention facilities that receive septage from more than one septage
management firm shall include: (1) the date that the septage is received at and removed from the
facility; (2) name of the septage management firm that delivered the septage; (3) type and
amount, in gallons, of septage received; and (4) where septage is discharged. (v) Record keeping
for treatment facilities shall include: (1) date septage is received at the facility; (2) name of the
septage management firm that delivered the septage; (3) type and amount, in gallons, of septage
received; (4) date processed material(s) is removed from the facility; (5) type and amount, in tons
or gallons, of material removed from the facility; and (6) management methods for each type of
material removed by the facility
12

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
Appendix A:
NC DEQ SEPTAGE PUMPER VEHICLES BEST MANAGEMENT PRACTICES
The state's septage management program is responsible for inspecting and
approving pumper vehicles for the safe transportation of septage across the state. In
the event that these vehicles are utilized for the handing and transportation of waste
streams other than septage, the state recommends implementing best management
practices.
CLEANING
Prior to the collection and transportation of material other than septage, the pumper
vehicle must be thoroughly cleaned.
• Spray the interior of the tank with water and disinfectants where applicable,
removing any sludge on the bottom. If there is sludge that is difficult to take
out, a device called a vibrator can be attached to vibrate the tank, loosening
the inside layers of solid material.
• If the above method does not work or if the sludge has been inside the tank
for a while, the only way to eliminate it is manually digging out any residual
material. Remember that the tank is considered a confined space and proper
safety protocol should be followed.
• Make sure that all septage debris from the baffle wall within the tank has
been removed. Once the interior of the tank and hoses have been properly
cleaned of all liquid and stuck -on solid materials, the exterior of the truck
can be cleaned to remove any residual waste.
• Any solids that will pass a paint filter test can be bagged to go to a
Municipal Solid Waste Landfill.
• Throughout the entire cleaning process, wash water runoff shall be collected
and properly disposed as this, too, is now considered to be septage.
• Washings from a pump vehicle tank that previously had septage in it can be
spread on a permitted Septage Land Application Site as long as it does not
destroy the vegetation. These washings may also be placed in a permitted
Septage Detention Tank.
13

RDU Facility
3900 Commerce Park Dr
Raleigh NC 27610
PUMPING
CLT Facility
235 W Liddell St.
Charlotte, NC 28206
It is the responsibility of the owner and operator of a septage pumper vehicle to
know the type of material or waste stream to be pumped and transported.
• Utilization of a septage pumper vehicle for potable water is prohibited.
• Utilization of a septage pumper vehicle for hazardous waste is prohibited.
• Utilization of a septage pumper vehicle for petroleum products (oil, gas,
etc.) or material with a noticeable petroleum odor and/or petroleum sheen is
prohibited.
DISPOSAL
Proper disposal is the responsibility of the owner and operator of a pumper vehicle.
• Prior knowledge of an approved disposal location for the material to be
pumped and transported is recommended.
• Nothing other than septage as defined in G.S. 130A-290(a) (32) may be
placed at a permitted Septage Detention & Treatment Facility.
• Nothing other than septage as defined in G.S. 130A-290(a) (32) may be
placed on a permitted Septage Land Application site.
RECORD -KEEPING
It is recommended that owners and operators of pumper vehicles maintain logs of
each pump event.
• The date, type, quantity, and location of material pumped, and vehicle used.
• The date, type, quantity, and location of material discharged, and vehicle
used.
• Records of pump events should be maintained for a period of five years.
14