WQ0006210_Final Permit_19980305

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
March 5, 1997
Ms. Carol Wrenn, Environmental Engineer
Emro Marketing Company
1954 Airport Road, Suite 206
Chamblee, Georgia 30341
Dear Ms. Wrenn:
I N1.9MA,
�A&j 0
Oak
[DEHNR
Subject: Permit No. WQ0006210
Emro Marketing Company
Emro #251
Groundwater Remediation Facilities
New Hanover County
In accordance with your application received January 3, 1997, we are forwarding herewith Permit
No. WQ0006210, dated March 5, 1997, to Ernro Marketing Company for the continued operation of the
subject groundwater remediation facility. Please be advised that the bent external metal well casing around
monitor well number 6 shall be repaired as soon as possible and the monitor well cap shall remain in place at
all times.
This permit shall be effective from the date of issuance until February 28, 2002, shall void Permit
No. WQ0006210, issued September 25, 1992, and shall be subject to the conditions and limitations as
specified therein. Please pay particular attention to the monitoring requirements in this permit. Failure to
establish an adequate system for collecting and maintaining the required operational information will result in
future compliance problems.
If any parts, requirements, or limitations contained in this permit are unacceptable, you have the right
to request an adjudicatory hearing upon written request within thirty (30) days following receipt of this
permit. This request must be in the form of a written petition, conforming to Chapter 150B of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings, P.O. Drawer 27447,
Raleigh, NC 27611-7447. Unless such demands are made this permit shall be final and binding.
If you have any questions concerning the Groundwater Conditions or groundwater monitoring
requirements, please contact Brian Wootton in the Groundwater Section at [phone] If you need any
additional information concerning this matter, please contact -Rick Moore at [phone] extension 527.
Sincerely,
W-1
A. Preston Howard, Jr.,%P.E.
CC' New Hanover County Health Department
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Training and Certification Unit
Facilities Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
GROUNDWATER REMEDIATION PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION 1S HEREBY GRANTED TO
Emro Marketing Company
New Hanover County
FOR THE
continued operation of a 21,600 GPD groundwater remediation facility consisting of a vertical tube
coalescing oil/water separator with a 300 gallon product tank, a 100 gallon primary surge tank, a 20 GPM,
1.5 hp diffused aeration system, a 100 gallon secondary surge tank, four particle filters in parallel, eight
carbon filters having four parallel paths each with two units in series, an Accu-meter flow totallizer, a 360
ft2 subsurface disposal trench and all necessary pumps, valves and appurtenances to serve Emro
Marketing Company Store #251 with no discharge of wastes to the surface waters, pursuant to the
application received January 3, 1997, and in conformity with the project plan, specifications, and other
supporting data subsequently filed and approved by the Department of Environment, Health and Natural
Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until February 28, 2002, shall void Permit
No. WQ0006210, issued September 25, 1992, and shall be subject to the following specified conditions
and limitations. -
I. PERFORMANCE STANDARDS
1. This permit shall become voidable if the soils fail to adequately assimilate the wastes and
may be rescinded unless the facilities are installed, maintained, and operated in a manner
which will protect the assigned water quality standards of the surface waters and ground
waters.
2. In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those
actions that may be required by this Division, such as the construction of additional or
replacement treatment or disposal facilities.
3. The issuance of this permit shall not relieve the Permittee of the responsibility for damages
to surface or groundwaters resulting from the operation of this facility.
4. Any residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Water Quality.
5. Diversion or bypassing of the untreated groundwater from the treatment facilities is
prohibited.

II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of
the wastewater treatment facilities. The operator must hold a certificate of the type and
grade at least equivalent to or greater than the classification assigned to the wastewater
treatment facilities by the Certification Commission. The Permittee must also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions
of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class II, III, and IV facility at least daily, excluding weekends and
holidays, and must properly manage and document daily operation and maintenance of the
facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202.
3. The facilities shall be effectively maintained and operated as a non -discharge system to
prevent the discharge of any wastewater resulting from the operation of this facility.
III. MONITORING AND REPORTING REQUIREMENTS
1. Any monitoring deemed necessary by the Division of Water Quality to insure surface and
ground water protection will be established and an acceptable sampling reporting schedule
shall be followed.
2. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone
number [phone] as soon as possible, but in no case more than 24 hours or on the
next working day following the occurrence or first knowledge of the occurrence of any of
the following:
a. Any occurrence at the groundwater remediation facility which results in the treatment of
significant amounts of contaminated groundwaters which are abnormal in quantity or
characteristic, such as the dumping of the contents of a basin or tank, the known
passage of a slug of hazardous substance through the facility, or any other unusual
circumstances;
b. Any process unit failure, due to known or unknown reasons, that renders the
groundwater treatment and disposal system incapable of adequate treatment and
disposal, such as mechanical or electrical failures of pumps, aerators, compressors,
etc.;
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass
directly to receiving waters without treatment of all or any portion of the influent to
such station or facility; or
d . Any time that self -monitoring information indicates that the groundwater treatment and
disposal system is not in compliance with any specified permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within five (5) days following first knowledge of the occurrence. This report must
outline the actions taken or proposed to be taken to ensure that the problem does not recur.

3 . The effluent shall be monitored for the following parameters:
Parameter Fre uenc
Flow
Continuously
pH
2/month
Lead
Quarterly
BTEX
Quarterly
MTBE
Quarterly
The results of the monitoring shall be sent to the Water Quality Section, Wilmington Regional
Office, Attention: Water Quality Supervisor, 127 Cardinal Drive, Wilmington, North Carolina
28409.
IV. GROUNDWATER REQUIREMENTS
The influent and effluent from the treatment system shall be sampled monthly for the
parameters specified below:
Standard Method 6230D including isopropyl ether (IPE) and methyl tert-butyl ether
(MTBE)
or
Standard Method 6210D including IPE and MTBE
or
EPA Methods 601 and 602 including IPE, MTBE, ethylene dibromide (EDB) and
xylenes
and
Lead (Standard Methods 3030C)
2. Monitor wells MW-2, MW-3, MW-4 and MW-6 (depicted on Attachment A) shall be
sampled every April and November for the following parameters:
Standard Method 6230D including isopropyl ether (IPE) and methyl tert-butyl ether
(MTBE)
or
Standard Method 6210D including IPE and MTBE
or
EPA Methods 601 and 602 including IPE, MTBE, ethylene dibromide (EDB) and
xylenes
and
Lead (Standard Methods 3030C)
Water Level
The measurement of water levels must be made prior to sampling for the remaining
parameters. The depth to water in each well shall be measured from the surveyed point on
the top of the casing.
The measuring points (top of well casing) of all monitoring wells shall be surveyed to
provide the relative elevation of the measuring point for each monitoring well.
The results of the sampling and analysis must be received on Form GW-59 (Groundwater
Quality Monitoring: Compliance Report Form) by the Groundwater Section, Permits and
Compliance Unit, P.O. Box 29578 Raleigh, N.C. 27626-0578 on or before the last
working day of the month following the sampling month.
4

3. The monitor wells must have identification plates and locks securing the well against
unauthorized access and use (15A NCAC 2C .0108).
4. If during rainfall events, the site shows any potential for flooding, the operations shall be
ceased until the threat of flooding is abated.
5. All components of the groundwater recovery, treatment, and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
b. The groundwater recovery, treatment and disposal system shall be inspected weekly. If it
is determined that the system is malfunctioning, all repairs should be made as soon as
possible and reported to the Wilmington Regional Office within 48 hours.
7. The groundwater treatment system shall consistently achieve at least a 95% treatment
efficiency (i.e. remove 95% of the influent contaminants) prior to discharge to the injection
wells. if the treatment system fails to consistently achieve this standard, additional
treatment units or changes in operational methods, may be required.
8. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
V . INSPECTIONS
1. Adequate inspection, maintenance and cleaning shall be provided by the Permittee to insure
proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the groundwater recovery and treatment
facilities to prevent malfunctions and deterioration, operator errors and discharges which
may cause or lead to the release of wastes to the environment, a threat to human health, or a
nuisance. The Permittee shall maintain an inspection log or summary including at least the
date and time of inspection, observations made, and any maintenance, repairs, or corrective
actions taken by the Permittee. This log of inspections shall be maintained by the Permittee
for a period of three years from the date of the inspection and shall be made available to the
Division of Water Quality or other permitting authority, upon request.
3. Any duly authorized officer, employee, or representative of the Division of Water Quality
may, upon presentation of credentials, enter and inspect any property, premises or place on
or related to the disposal site or facility at any reasonable time for the purpose of
determining compliance with this permit, may inspect or copy any records that must be
maintained under the terms and conditions of this permit, and may obtain samples of
groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
Issuance of this permit does not constitute approval for reimbursement from the Leaking
Petroleum Underground Storage Tank Cleanup Funds (15A NCAC 2P).
2. This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and specifications, and other supporting
data.
This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.

4. This permit is not transferable. In the event there is a desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must be
submitted to the Division of Water Quality accompanied by an application fee,
documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may
not be approved.
5. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
6. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Water Quality in accordance with
North Carolina General Statute 143-215.6(a) to 143-215.6(c).
7. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revoke this permit as specified by 15A NCAC 2H .0205
(c)(4).
8. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
9. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its
extension. Upon receipt of the request, the Commission will review the adequacy of the
facilities described therein, and if warranted, will extend the permit for such period of time
and under such conditions and limitations as it may deem appropriate.
Permit issued this the 5th day of March, 1997.
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. reston Rolward, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0006210
6

appropriate. The approval of this request will be considered on its merits and may or may
not be approved.
5. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
6. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Water Quality in accordance with
North Carolina General Statute 143-215.6(a) to 143-215.6(c).

JO
C14 En
O to
0
0
o L)
ci En
E-4 E-4
3. in 0 N
jti -W E-1 E13
Tei 0 E-1
ppa4
1. A
MOW
I JW,
A19
k'f'
V_
16
Ite
nf Ivorib
r,
sync
1. A
MOW
I JW,
A19
k'f'
V_
16
Ite
nf Ivorib
r,
sync
-

ATTACHMENT A EMRO MARKETING COMPANY
EMRO UNIT #251
GROUNDWATER REMEDIATION SYSTEM
PERMIT NO. WQ0006210
NEW HANOVER COUNTY
MW-6
A M W-4
TNTTL'TRATION GALLERY
MW-3
I
MW-2
A
A MONITOR WELLS TO BE SAMPLED Scale: I" = 30'
4--0 PROPERTY BOUNDARY
N

i
4s7o k)]LWINC oral
SS
W
Ss
(AS0EaL-r
U5. HIGiHkJAY 17
_5 55 55 5s s5
TC�,KA55 AFzt�A T
COrJcRE(E\Q r ASPNAL'��
M ICJ - 6
♦`. �1/
i r-- - Mw-��\
IA E,J �i
Mihl�l lW-- ONE i tA�KFIL.L
s(oKY 6�x
/Y Mt.iO-g
i A
rY{w..2
MW-
nor
L,eGENc
M01141'iORIM� WELL
CoUSTRUCfW I- 4 - -90
MoNtTal�trvC� WELL
Co► -,ff�izv i -i i-oI
E4PWFW0RY OORMej
A -A'
CRoS5 - sEcnom
LOCA-rOM
55
5AMIYAE,Y SEt�lEt�
W
kjAiEf4, LINE
TELE~PHOt JE C.AbL.F-
O 20 40 t;
MAP REF; 5uRgclf E✓R ORM�I7
I?,OAl\JW,C LAME2 SQRVE=Y 0)0-90 13Z APPRox. SCAu-E
c`
SITE PLAN 7 LAW ENVIRONMENTAL, INC.
PO RT 251 SCALF Drawn: K LG Job No 59 -0103+
A-5 5taowti Checked: J 6L_
wi LM�� Wotij) M. G. ��g. No.
Date: Dz - l I — � � 2

y
RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: .VY7 1fn/ir ��
Owner or Contact Person: 120LW,9957VAJ
Mailing Address: / P Z>, t
County: wit) n4L)£71 Telephone: 76S — 1G10
Present Classification:_ .L _„_,__ New Facility Existing Facility
NPDES Per. No. NC00 Nondisc. Per. Nt7.WQL" 10 Health Dept.Per No.
Rated by: /fC / mS Telep,hone: 5RS,e2CV Date: / Yy
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC: A914Q49b 62WZ�il_Grade: —Telephone:C1
Check Classification(s): Subsurface ti/ Spray Irrigation Land Application
Wastewater Classification: (Circle One) I it III IV Total Points:
\ :►1 'titer :\� i :1►Ilan ��. r�e�\1 :I�i��:l :\ ►Ih.i: :.i �i \� is trC��� Ili► mow: ►,1
��ja i 1 :_ i. li : Ill -11 a� i t■ i ��� �,� .:.�alL..: ► 1. �tL� I�,u ��.! i \. * \:. ;JI: •• 4►`�.
SUBSURFACE CLASSIFiCAT10N
(check all units that apply)
1_ septic tanks
2.pump tanks
3.-siphon or pump -dosing systems
4. d sand filters
5. grease trapMterceptor
6._oil/water separators
7.gravity subsurface treatment and disposal:
8. pressure subsurface treatment and disposal
SPRAY IRRIGATION CLASS1FLCATICN
(check all units that apply)
1.
preliminary treatment (definition no. 32 )
2.
lagoons
3.
septic tanks
4.
pump tanks
5.
pumps
6,
sand filters
7.
groase trapfinterceptor
8.
oil/water separators
9.
disinfection
ID. -chemical
addition for nutrient/algae control
11,
spray irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater In excess of these components shall
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class I classification, unless the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate)
1_ OiVwater Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Fifter Systems consisting only of septic tanks, dosing apparatus, pumps,sand filters, disinfection
and direct discharge-,
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems;
5. Groundwater Remediation Systems consisting only of oil/water separators, pumps, air -stripping, carbon adsorption, disinfection
and dispos-rA;
6. Aquaculture operations with discharge to surface waters;
7. Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9. Single-family discharging systems, with the exception of Aerobic Treatment Units, will be classified if permitted after July 1,
1993 or if upon inspection by the Division, it is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassification by the Commission, in writing.

The fallowing scale is used for rating wastewater treatment facilities: (circle appropriate points)
ITEM POINTS
( 1) Industrial Pretreatment Units or Industrial Pretreatment Program (see defintion No. 33)...............:....................................4
(2) DESIGN
FLOW OF PLANT IN gpd [not applicable 10 non -contaminated cooling waters, sludge handling facilities for
water purification
plants, totally closed cycle systems(see definition No. 11), and facilities consisting only of item
(4)(d)
or Items (4)(d) and (I1)(d))
0 20.000............................................:.......................:..........................................................................2
20,001 - 50,000.............................................................................
50,001 - 100,000.................. t :.......:.... .................. I....................
100,001 - 250,000...................................................................................................................................4
250,001 - 500,000..................................................................................................................................5
500.001 - 1,000,000................................................................................................................................8
1.000.001 - 2.000,000....................................................................................................1......................10
point
2.000.001 (and up) rate 1 point additional for each 200.000 gpd capacity up to a maximum of .................30
Design Flaw
(gpd)
(3) PRELIMINARY
UNITS/PROCESS ES (see'definitlon Na.32)
(a)
BarScreans...................................................................................... 1
(b)
or
Mechanical Screens, Static Screens or Comminuting Devices..........................................................................2
(c)
Grit Romoval........................................................................................................................ 1
or
(d)
Mechanical or Aerated Grit Removal.............................................................................................................2
(e)
Flow Measuring Device...... .......................... ................................................................................. ........... _1
or
(f)
Instrumented Flow Measurement..............................................................................................................�
(9)
Preaeratlon...............................................................................................................................................2
(h)
(i)
Influent Flow Equalization........................................................................................................................
Grease or Oil Separators - Gravity... ....... .................................... .......... .......*
ravity..............................................................................
.
Mechanical.............................................................................................................................................
DissolvedAir Flotation ................................................................................................................................6
(�) Prechlodnatlon.........................................................................................................................................5
(4) PRIMARY TREATMENT UNITS/PROCESSES
(a)
Septic Tank (see definition No. 43)............................................................................................................2
(b)
Imhoff Tank..............................................................................................................................................5
(c)
Primary Ciariflers.........................................................................................................................................5
(d)
Settling Ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge handling facilities for water
purification plants, sand, gravel, stone, and other mining operations except recreational activities such as gem
orgold mining)........................................................................................................................................2
(5) SECONDARY TREATMENT LfJITwpioCEssEs
(a)
Carbonaceous stage
(!) Aeratlon-High Purity Oxygen System...............................................................................20
DiffusedAir System.......................................................................................................1 0
Mechanical Air System (fixed, floating or rotor) .................................................... ............. Z
Separate Sludge Reaeration................. 3
Trickling Filter
HighRate.......................................................................................................................7
StandardPalo...............................................................................................................5
PackedTower................................................................................................................5
(III} Biological Aerated Filter or Aerated Biological Filter ............................................................1 0
(iv) Aerated Lagoons...........................................................................•-.............................10
(v) Rotating Biological Contactors ................................................................................. ..10
(vi) Sand Filters -intermittent biological..................................................................................2
Recirculatingbiological....................................................................................................3
(vIi) Stabilization Lagoons.....................................................................................................5
(vial) Clarifier..................................................... S
(fx) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by
nitrification (see deflnhion No. 12)(Points for this item have to be in addition to items
(5)(a)(1) through (5)(a)(viil),
utilizing the extended aeration process (see definition No.3a)...........................................2
utilizing other than the extended aeration process............................................................8
(x) Nutrient additions to enhance BOD removal......................................................................5
(x1) Biological Culture ('Super Bugs")addition........................................................................5
(b)
Nitrogenous Stage
(I} Aeration - High Purity Oxygen System.............................................................................20
DiffusedAir System.......................................................................................................1 0
Mechanical Air System (fixed, floating or rotor)..................................................................8
Separate Sludge Reaerallon................................................................................ ....3
(€I) Trickling Filter -High Rate...................................................................................................7
StandardRate .... ...........................................................................................................6
PackedTower................................................................................................................5
(ill) Biological Aerated Filter or Aerated Biological Filter.............................................................1 0
(iv) Rotating Blologlcal Contactors.....................................................................................A 0
(v) Sand Fliter - Intermittent blological...................................................................................2
Recirculatingbiological.....................................................................................................3
(vi) Clarifier...........................................................................................................................5
(li) TEM ARYORADVANCEDTREATMENTUNITS'PROCESSES
(a)
Activated Carbon Beds -
without carbon regeneration.................................................................................................n
with carbon regeneration.......................................................................................................1
(b)
Powdered or Granular Activated Carbon Feed -
'without carbon regeneration..................................................................................................5
(c)
withcarbon regeneration....................................................................................................
Air stripping........................................................................................................................................... 1-
(d)
Denhrf lcation Process ..............................................................................................................................
(e)
Efecirodialysls.............................................................................................................................................5
(i)
Foam Separation........................................................................................................................................5
(g)
Ion Exchange............................................................................................................................................5
(h)
Land Application of Treated Effluent (see definhlon No. 22b) (not ap ticabl fa sand, g el, stone
and other similar mining operations) by high rate infiltration..,�.Uj5i U97Aac7-.. .Lit.. .Q..t�� .....4.g
(i)
Microscreens.......................................................................................................................................5
O)
Phosphorous Removal by Biological Processes (See definition No. 26)..............................................................20
(k)
Polishing Ponds - without aeration............................................................................................................2
with aeration................................................................................................................5
.

(f)
Post Aeration - cascade................................................................................................ o
diffused or mechanical. 2
(m)
Reverse Osmosis........................................................................................................................................5
(n)
Sand or Mixod-Media Filters - low rate...................................................................
highrate..................................................................
(o)
..5
Treatment processes for removal at metal or cyanide
(p)
...................................................................................
ial
treatment processes for removal of toxic materials other than metal or cyanide.............................................1 5
(7)
SWDGETREATMENT
(a)
Sludge Digestion Tank - Heated (anaerobic)...............................................................................................10
Aerobic...................................
Unheated(anaerobic)................................................................................................................................3
(b)
Sludge Stabllizatlon (chemical or thermal).-......- ..................... -1-1. ................. ............. ........................
(c)
.5
Sludge Drying Beds - Gravity......................................................................................................................2
VacuumAssisted...................................................................................................................................... 5
(d)
Sludge Elutdation......................................
(e)
Sludge Condhioner (chemical or thermal).....................................................................................................5
(f)
Sludge Thickener (gravity)..........................................................................................................................5
(g)
Dissolved Air Flotation Unit (net applicable to a unit rated as ............................... .8
.........................
(h)
Sludge Gas Utilization (Including gas storage),., ...................................... ......2
(I}
Sludge Holding Tank - Aerated....................................................................................................................5
Non- aerated............................................................................................................................................. 2
(])
Sludge Incinerator (not Including activated carbon regeneration)................................................................to
(k)
Vacuum Titer, Centrifuge, or Filter Press or other similar dewatering devices...................................................1 0
(8)
RESIDUALS UTILIZATION/DISPOSAL (Including incinerated ash)
(a)
Lagoons..............................:...................................................................................................................2
(b)
Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
orlandfill permit........................................................................................................................................2
(c
Dedicated Landfill(budal) by the permittee of the wastewater treatment facility...............................................5
9
( )
(a)
Chlorination.............................................................................................................................................5
(b)
Dechlorination.................................................................................................................... ...................5
(c)
Ozone......................................................................................................................................................5
(d)
Radiation..............................................................................................................................................5
(1 0)
CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) (not applicable to chemical additions rated as hem (3)(1).
(5)(a)(4),
(6)(a), (6)(b), (7)(b), (7)(e). (9a), (9)(b) or (9)(c) 5 points each:
List
......................................................................................................................... 5
................................................................................................................................... 5
(11)
........................................................................................................................... 5
MiSCELLANL-OUS UNffSrPRDCESSES .......
(a)
Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials including wastes from mining
operations containing nitrogen or phosphorus compounds In amounts signillcantly greater than Is common
fordomestic wastewater...........................................................................................................................4
(b)
Effluent Flow Equalization (not applicable to storage basins which are Inherent in land application systems},....,
(c)
(d)
Stage Discharge {not applicable to storage basins inherent in land application systems} .................................
Pumps..................................................................................................................
(a)
.......................
Stand -By Power Supply........................................................................................•........................,.....................
(f}
Thermal Pollution Control Device.......................................................................................................
TOTALPOINTS..........................................................................
CLASSIFICATION
ClassI........................................................................................................... 5-25 Points
ClassII .................................................... ................... ..... ............................. 26-50 Points
ClassIII ........ ................................................................................................ 61-65 Points
ClassIV............................................................. ............................. ......... .... 66-Up Points
Facillties having a rating of one through four points, Inclusive, do not require a certified operator.
Facilities having an activated sludge process will be assigned a minimum classification of Class II.
Facilities having treatment processes forthe removal of metal or cyanide will be assigned a minimum classification of Class II.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class ill.
.0004 DEF1NfrIONS T...._}.------
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds, A physlcal/chemical method for reducing soluble organic material from wastewater effluent; The column -type beds used In this
method will have a flow rate varying from two to eight gallons per minute per square foot and may be either upflow or downftow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant site;
(2) Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter Is reduced through artificially
accelerated transfer of oxygen on a flow -through basis,
(3) Aeration. A process of bringing about intimate contact between air or high purity oxygen in a liquid by spraying, agitation or diffusion;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agriculturally managed site. Any she on which a crop Is produced, managed, and harvested (Crop includes grasses, grains, trees, etc.);
(5) Air Stripping. A process by which the ammonium Ion is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene, toluene, and xylene;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the
absorbed impurities;
(7) Carbonaceous Stage. A stage of wastewater treatment designed to achieve 'secondary' effluent limits;
(8) Centrifuge. A mechanical device In which centrifugal force Is used to separate solids from liquids or to separate liquids of different densrlas;
(9) Chemical Addition Systems- The addition of chemlcaf(s) to wastewater at an application point for purposes of Improving solids removal, pH adjustment,
alkalinity control, etc.; the capability to experiment with different chemicals and different application points to achieve a specific result will be considered one
system; the capability to add chemicals) to dual units will be rated as one system; capability to add a chemical at a different application points for different
purposes will result In the systems being rated as separate systems;
(10) Chemical Sludge Conditioning. The addition of a chemical compound such as Ilme, ferric chloride, or a polymer to wet sludge to coalesce the mass prior to
Its application to a dewatering device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks for containment of wastewater containing inorganic, non -toxic materials from sand, grave[,
crushed stone or other similar operations, Such systems shall carry a maximum of two points regardless of pumping facilities or any other appurienances;
(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nitrification- A single stage system required to achieve permit effluent limits on BOD
and ammonia nitrogen within the same biological reactor;
(13) Dechlodnation. The partial or complete reduction of residual chlorine in a liquid by any chemical or physical process;
(14) Denhrdication Process. The conversion of nitrate -nitrogen to nitrogen gas;

(15) Electrodlalysis. Process for removing ionized salts from water through the use of ion -selective ion -exchange membranes;
(16) Filter Press. A process operated mechanically for parilally do watering sludge;
(17) Foam Separation. The piannad frothing of wastewater or wastewater effluent as a means of removing excessive amounts of detergent materials through
the introduction of air In the form of fine bubbles; also called foam fractionation;
(18) Grit Removal. The process of removing grit and other heavy mineral matter from wastewater;
(19) Imhoff Tank. A deep two story wastewater tank consisting of an upper sedimentation chamber and a lower sludge digestion chamber.
(20) Instrumented Flow Measurement. A device which Indicates and records rate of flow;
(21) Ion Exchange. A chemical process in which ions from two different molecules are exchanged;
(22) Land application:
(a) Sludge Disposal. A final sludge disposal method by which wet sludge may be applied to [and either by spraying on the surface or by subsurface injection
(i.e., chisel plow); (not applicable for types of sludge described In (11) of this Rule];
(b) Treated Effluent. The process of spraying treated wastewater onto a land area or other methods of application of wastewater onto a land area as a
means of final disposal or treatment;
(23) Microscreen. A low speed, continuously back -washed, rotating drum filter operating under gravity conditions as a polishing method for removing
suspended solids from effluent;
(24) NlInfioallan Process- The biochemical conversion of unoxidized nitrogen (ammonia and organic nitrogen) to oxidized nitrogen (usually nitrate);
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purpose of converting ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, Biological. The removal of phosphorus from wastewater by an oxicianoxic process designed to enhance luxury uptake of phosphorus
by the microorganisms;
(27) Polishing Pond. A holding pond following secondary treatment with sufficient detention time to allow settling of finely suspended solids;
(28) Post Aeration. Aeration following conventional secondary treatment units to Increase effluent D.O. or for any other purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen is added to the effluent by a nonmechan€cal, gravity means of flowing down a
series of steps or weirs; The flow occurring across the steps or weirs moves in a fairly thin layer and the operation of the cascade requires no operator
adjustment; thus, zero points are assigned even though this Is an essential step to meeting the limits of the discharge permit;
(30) Powdered to Granular Activated Carbon Food. A biophysical carbon process that utilizes biological activity and organic absorption by using powdered or
granular activated carbon; Virgin or regenerated carbon is food controlled into the system;
(31) Preaeration. A tank constructed to provide aeration prior to primary treatment;
(32) Preiiminary Units. Unit operations in the treatment process, such as screening and comminution, that prepare the liquor for subsequent major operations;
(33) Industr#ai Pretreatment.
(a) Pre-treatment Unit, industrial. The conditioning of a waste at its source before discharge, to remove or to neutralize substances injurious to sewers and
treatment processes or to effect a partial reduction in load on the treatment process which is operated by the same governing body as the wastewater
treatment plant being rated;
b) Pre-treatment Program, Industrial - must be a State or EPA required program to receive points on the rating sheet;
(34) Primary Clarifiers. The first settling tanks through which wastewater Is passed in a treatment works for the purpose of removing settleable and suspended
solids and BOD which is associated with the solids;
(35) Pumps. All influent, effluent and in -plant pumps;
(36) Radiation. Disinfection or sterilization process utilizing devices em€aing ultraviolet or gamma rays;
(37) Reverse Osmosis. A treatment process in which a heavy contaminated liquid Is pressurized through a membrane forming nearly pure liquid free from
suspended solids;
(38) Rotating Biological Contractors. A fixed blologicaf growth process In which wastewater flows through tanks In which a series of partially submerged circular
surfaces are rotated;
(39) Sand Filters:
(a) Intermittent Biological. Filtration of effluent following septic tanks, lagoons, or some other treatment process In which further blodecomposhlon Is
expected to produce desired effluents; Hydraulic loading rates on these filters are computed In gpd/ac and have a resulting tow gprrVsf (less than ono);
b) Recirculating biological - the same type of sand filter as defined In Subparagraph (39) (a) of this Rule with the added capability to recycle affluent back
through the sand filter;
(40) Sand or Mixed -Media Filters. A polishing process by which effluent limits are achieved through a further reduction of suspended solids;
(a) low rate -- gravity, hydraulically loaded filler with loading rates In the one to three gpm/sf range;
(b) high rate -- a pressure, hydraulically loaded filter with loading rates in the five gpnVrf range- At any rate, the loading rate will exceed three gprrVsf;
(41) Secondary Clarifiers. A tank which follows the biological unit of treatment plant and which has the purpose of removing sludges associated with the
biological treatment units;
(42) Separate Sludge Reaaration. A part of the contact stabilization process where the activated sludge Is transferred to a tank and aerated before returning it
to the contact basin;
(43) Septic Tank. A single -story settling tank In which settled sludge Is In contact with the wastewater flowing through the tank; shall not be applicable for
septic lank systems serving single family residences having capacity of 2,000 gallons or less which discharge to a nitrification field;
(44) Sludge Digestion. The process by which organic or volatile matter and sludge is gasified, liquefied, mineralized or converted Into more stable organic matter
through the activity of living organisms, which includes aerated holding tanks;
(45) Sludge Drying Beds. An area comprising natural or artificial layers of porous materials upon which digested sewage sludge Is dried by drainage and
evaporation'
(46) Sludge Elutdation- A process of sludge condit€oning In which Certain constituents are removed by successive washings with fresh water or plan# effluent;
(47) Sludge Gas Utilization. The process of using sewage gas for the purpose of heating buildings, driving engines, etc.;
(48) Sludge Holding Tank (Aerated and Nonaerated). A tank utilized for small wastewater treatment plants not containing a digester In which sludge may be
kept fresh, and supernatant withdrawn prior to a drying method (Le- sludge drying beds); This may be done by adding a small amount of air simply to keep the
sludge fresh, but not necessarily an amount that would be required to achieve stabilization of organic matter. A nonaerated tank would simply be used to
decant sludge prior to dewatering and would not allow tong periods (several days of detention) without resulting odor problems;
(49) Sludge Incinerators. A furnace designed to bum sludge and to remove all moisture and combustible materials and reduce the sludge to a sterile ash;
(50) Sludge Stabilization (Chemical or Thermal). A process to make treated sludge less odorous and putrescble, and to reduce the pathogenic organism
content; This may be done by pH adjustment, chlorine dosing, or by heat treatment;
(51) Sludge Thickener, A type of sedimentation tank In which the sludge is permitted to settle and thicken through agitation and gravity;
(52) Stabilization Lagoon. A type of oxidation lagoon in which biological oxidation of organic matter Is effected by natural transfer of oxygen to the water from
air (not a polishing pond);
(53) Stand -By Power Supply. On site or portable electrical generating equipment;
(54) Static Screens. A stationary screen designed to remove solids, including non-biodegradabto particulate (floatable solids, suspended solids and SOD
reduction) from municipal and Industrial wastewater treatment systems;
(55) Tertiary Treatment. A stage of treatment following secondary which Is primarily for the purpose of effluent polishing; A sealing lagoon or sand or coal flltor
might be employed for this purpose;
(56) Thermal Pollution Control Device. A device providing for the transfer of heat from a fluid flowing In tubes to another fluid outside the tubes, or vice versa;
or other means of regulating liquid temperatures;
(57) Thermal Sludge Conditioner. A conditioning process by which heat Is added for a protracted period of tlme to improve the dewaterablitty of sludge by the
solubilizing and hydraullzing of the smaller and more highly hydrated sludge particles;
(58) Toxic Materials. Those wastes or combinations of wastes, Including disease -causing agents which after discharge and upon exposure, Ingestion, Inhalation
or assimilation Into any organism, either directly from the environment or indirectly by ingestion through food chains, will cause death, disease, behavioral
abnormalities, cancer, genellc mutations, physiological malfunctions (Including malfunctions in reproduction) or physical deformations, in such organisms or their
offspring; Toxic materials Include, by way of Illustration and not limitation: load, cadmium, chromium, mercury, vanadium, arsenic, zinc, ortho-nhro-cWerobe nzene
(ONCB), polychlorinated biphenyls (PCBs) and dichiorodipheny# tnchloroethane (DDT); and any other materials that have or may hereafter be determined to have
toxic properties;
(59) Trickling Filter. A biological treatment unit consisting of a material such as broken stone or rock over which wastewater is distributed; A high rate trickling
filter Is one which operated at between 10 and 30 mgd per acre. A low rate trickling filter is one which is designed to operate at one to four mgd per acre;
(60) Trickling Fllter (Packed Tower). A plug flow type of operation ;n which wastewater flows down through successive layers of media or Nitrate material; Organic
material is removed continually by the active blofogicat fixed growth In each successive layer. This method may produce "secondary, quality effluent, or may be
adapted to produce a n1trified effluent;
(61) Vacuum Finer, Centrifuges, or Filter Presses. Devices which are designed to remove excess water from either digested or undigested sludge prior to disposal
or further treatment.