WQ0004097_Final Permit_19910520

ti
i
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27626-0535
James G. Martin., Governor
William W. Cobey, Jr., Secretary
Mr. Robert Arey
Arey Oil Company
1906 E. Dixon Boulevard
Shelby, North Carolina 28150
Dear Mr. Arey:
George T. Everett, Ph.D.
Director
May 20, 1991
Subject: Permit No. WQ0004097
Arey Oil Company
One Stop No. 4, Earl, N.C.
Groundwater Remediation System
Cleveland County
In accordance with your application received September 7, 1990, we are forwarding
herewith Permit No. WQ0004097, dated May 20, 1991, to Arey Oil Company for the construction
and operation of the subject groundwater remediation and infiltration gallery disposal system.
This permit shall be effective from the date of issuance until April 30, 1996, 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 to you,
you have the right to request an adjudicatory hearing upon written request within 30 days
following receipt of this permit. This request must be in the form of a written petition, conforming
to Chapter 150B of North Carolina General Statutes, and filed with the Office of Administrative
Hearings, P.O. Box 11666, Raleigh, NC 27604. Unless such demands are made this permit shall
be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need
additional information concerning this matter, please contact Mr. John Seymour at 919/ 733-5083.
cerely,
eoxge T. E
cc: Cleveland County Health Departme
Mooresville Regional Office
Groundwater Section
Training and Certification
Delta Environmental Consultants, Inc.
Facilities Assessment
Pollution Prevent ion Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
INFILTRATION GALLERY 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 IS HEREBY GRANTED TO
Arey Oil Company
Cleveland County
FOR THE
construction and operation of a 5,800 GPD groundwater remediation system with an infiltration
gallery and soil venting consisting of two (2) recovery wells each with a 7 gpm pump, a 1,000
gallon oil/water separator, a 550 gallon product holding tank, a contact chlorinator, two channeled
diffused aeration tanks in series with a 600 cfm blower, a totalizing flow meter, a 110 gallon
transfer tank with transfer pump, a 6 foot by 50 foot infiltration gallery with two piezometers, a 50
cfm regenerative vacuum pump with inlet coalescing and particle filter, and associated pumps,
piping, valves and appurtenances to serve One Stop No. 4 of Arey Oil Company in Earl, North
Carolina with no discharge to the surface waters, pursuant to the application received September 7,
1990 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 April 30, 1996, and shall be
subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the
permitted facility has been installed in accordance with this permit and the approved
plans and specifications. Mail the Certification to the Permits and Engineering Unit,
P.O. Box 29535, Raleigh, NC 27626-0535,
2. The Mooresville Regional Office, phone no. 704/ 663-1699 shall be notified
at least forty-eight (48) hours in advance of operation of the installed facilities so
that an in -place inspection can be made. Such notification to the regional supervisor
shall be made during the normal office hours from 8:00 a.m. until 5:00 p.m. on
Monday through Friday, excluding State Holidays.
3. This permit shall become voidable if the soils fail to adequately absorb 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.

4. In the event that the facilities faro perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or
replacement treatment or disposal facilities.
5. 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.
6. Any sludge generated from these treatment facilities must be disposed of in
accordance with General Statute 143-215.1 and in a manner approved by the North
Carolina Division of Environmental Management.
7. Diversion or bypassing of the untreated groundwater from the treatment facilities is
prohibited.
II. PERATI A� D MATNTENANCE REQUIREMENT,5
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 of the wastewater treatment facilities. The operator must hold a certificate of
the type and grade at least equivalent to the classification assigned to the wastewater
treatment facilities by the Certification Commission. Once the facility is classified,
the Permittee must submit a letter to the Certification Commission which designates
the operator in responsible charge within thirty days after the wastewater treatment
facilities are 50% complete.
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
Any monitoring deemed necessary by the Division of Environmental Management 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 Mooresville Regional Office, telephone
no. 704/ 663-1699, 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 wastewater treatment facility which results in the
treatment of significant amounts of wastes 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 render the
facility incapable of adequate wastewater treatment such as mechanical or
electrical failures of pumps, aerators, compressors, etc.
2

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.
d. Any time that self -monitoring information indicates that the facility is not in
compliance with its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in
letter form within 15 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.
IV, GROUNDWATER RE IRE -ME FTS
A second aeration system, identical to and in series with the first, shall be added to
the remediation system to further treat the effluent prior to discharge into the
infiltration gallery.
2. The effluent from the remediation system must comply with the groundwater quality
standards contained in 15A N CAC 2L .0200 prior to discharge into the infiltration
gallery.
3. All components of the groundwater recovery, treatment and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
4. The influent and effluent from the treatment system shall be sampled once every two
(2) weeks for the first three (3) months and monthly thereafter for the parameters
specified below:
Volatile Organic Compounds - (by Method 1 or Method 2 below)
Method 1: Method 6230D ( Capillary - Column), "Standard Methods for the
Examination of Water and Wastewater", 17th edition, 1989
Method 2: Method 502.2 " Methods for the Determination of Organic
Compounds in Drinking Water", United States Environmental
Protection Agency - 600/4-88/039
If any volatile organic compounds are detected by method 6230D,or the equivalent
method 502.2, then EPA methods 604 and 611 must also be run to detect other
organic compounds which may be present. The results of all analyses specified in
the monitoring requirements, including 604 and 611 if required, must be submitted
simultaneously.
The results of the sampling and analysis shall be sent to the Groundwater Section in
the Mooresville Regional Office and the Groundwater Section, Permits Unit, P. O.
Box 29535 Raleigh, N.C. 27626-0535, within 30 days of sample collection.
5. Two (2) weeks prior to system start-up, the Permittee shall notify the Division of
Environmental Management's Mooresville Regional Office that operation is about
to commence.
6. 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 Mooresville Regional Office.
47

7. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management 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 keep 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 upon request to the Division of
Environmental Management or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division of
Environmental Management may, upon presentation of credentials, enter and inspect
any property, premises or place on or related to the disposal site and facility at any
reasonable time for the purpose of determining compliance with this permit; may
inspect or copy any records that must be kept under the terms and conditions of this
permit; or may obtain samples of groundwater, surface water, or leachate.
VI. GENERAL CONDITIONS
1. This permit shall become voidable unless the facilities are constructed in accordance
with the conditions of this permit, the approved plans, specifications and other
supporting data.
2. This permit is effective only with respect to the nature and volume of wastes
described in the application and other supporting data.
3. 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 Environmental Management
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.
4. The Permittee shall obtain a well construction permit from the Mooresville Regional
Office prior to construction of the recovery wells.
5. Prior to a transfer of this land to a new owner, a notice shall be given to the new
owner that gives full details of the materials applied or incorporated at this site.
6. A set of approved plans and specifications for the subject project must be retained
by the Permittee for the life of this project.
7. Failure to abide by the conditions and limitations contained in this permit may subject
the Permittee to an enforcement action by the Division of Environmental
Management in accordance with North Carolina General Statute 143-215.6.
0

,%p S. 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 15
NCAC 2H .0205 (c)(4).
9. The issuance of this permit does not preclude the Penrrittee 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.
10. The Permittee, at least six (b) 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 20th day of May, 1991
X1:iZi�h7:1
George T. Ever ,
Division of Env n
By Authority of the
MANAGEMENT COMMISSION
tal Management Commission
5

-,",
Permit No. WQ0004097
May 20, 1991
Engineer's Certification
I, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project, for the
Project Name Location
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the
observation of the construction such that the construction was observed to be built within substantial
compliance and intent of the approved plans and specifications.
Signature
Date
Registration No.
9

BLACKSBURG NORTH G
NORTH CAROLINA-SOUTF
7.5 MINUTE SERIES (TOP
NE/4 CAFFNE' 15' QUA°RA!
2 500) °50 32'30" '51 °52 1 250000 FEET (N.C) j ru u s zyJ
' `
�a-Z 771.-,0 /=-- ,~ i! y'/ •I r • i+ , ;! f� ,i r f •.� . •� r�y , 1.--p�_ C
ate�rj i �) 800
` Uiplf ' Fin !6 '�f� c •l �.
zin-
Old r ^\ •\�. f _
/ A� m ]� 107
•� �> i •_ .
41
a nd. 113l:NasEe
subst.60 n 6 Ponds'-
" •,.. • • �� -� .� -
} l

rl;j�ln
vGr Mlxod-Media Fillers. A polishing process by which affluent limits are achieved through a
edLicilori of suspended solids:(a)low rate -- gravity, hydraullcally loaded filter with loading
iho one to ihroo gpmysl rango;(b)high rate -• a press hydraulically Iaadeal (iher with loading
rates In Iha {Iva gpmisf range; Al any rate, the loading ralo will oxcoad three gpwlsf;
(41)Sacondary Clarillors. A tank which follows Ilia blologlcal unlf of a Iroalmonl plant and which has
Iha purpose of removing sludge associated with the blologlcal lroalmoni units;
(42)Separale SIudge Reaerallon. A part of the conlacl stabilization process where the activated sludge
;s transferred to a tank and aerated before returning It to Ilia basin;
(43)Soptic Tank. A singla-slory settling lank In which settled sludge Is.in cor t wIlh the wastawater
llowing through the lank; shall not be applicable for septic tank syslom�ir�`d` 'in fl �1U 0 JG jfrd;ji dr �r55
loss -which discharge to a nitrification lield;
(44)Sludge Dlgesllon. The procass by which organic ur volalile matter and sludgo Is gasified, liquefied,
minarallzed or converted into more stable organic mailer through the activity of Iiving organisms,
which includes aerated holding ranks;
(45)Studge prying Beds. An area comprising natural or arli6cfal layers of porous materials upon which
digested sewage sfudga is driod by drainage and evaporation;
(46)Sludga.Elulriallon. A process of sludgo conditioning In which certain consiiluanls are removed by
succossivo washings with fresh water or plant affluanl;
(47)SJudga Gas Ulllizallon. The process of using sewage gas for the purposo of howling buildings,
driving engines, etc.;
(48)Sludge Holding lank (Aeralod and Nonaorated). A lank ulil(zod for small wastewater troalmoni
plants not conialning a digester In which sludge may be kopi fresh, and supernatant wllhdrawn prior to
a drying method (i.e. sludge drying beds); This may bo done by adding a small amount of air simply to
keep lho sludge fresh, but not nocassarily an amount that would be required to achieve stabilization of
organic maser. A nonaeraled lank would simply be used to decant sludge prior to dewatedng and wouid
simply be used to decant sludge prior to dewalering and would not allow long periods (several days of
detention) without resutkng odor problems;
(49)Sludge Incinaralors• A furnace designed to burn sludge and to remove all molsturo and combustible
maladals and reduce the sludge to a slorito ash;
(50)Sludgo Siabillzatlon (Chemical or Thormaf). A process to make treated sludge toss odorous and
putrescrible, and to reduce the pathogenic organism content; This may be done by pH adjustment
chlorine dosing, or by heal Iroalment;
(51)Sludge Thickener. A type of sedimentation lank in which the sludge Is permitted to settle and
thicken through agitation and gravity;
M)Stablllxalion Lagoon. A type of uxldalion lagoon in which biological oxidatlon of organic matter is
effected by natural transfer of oxygen to the water Irom air (not a polishing pond);
53)Sland-By Power Supply. On she or portable electrical ganeraling equipment�(54) Static Screens,
A stationary screen designed to remove solids Including non•biodegradablo particulate (floalable solids,
suspended solids and 600 reduction) Irom municipal and industrial
wastewater treatment systems;
(55)Terliary Treatment. A stage of Ireatmenl following secondary which Is primarily for the purposo
of effluent polishing; A settling lagoon or sand or coal filler might be employed for this purpose.
(56)Thormal Pollution Control Device. A device providing for the transfer of heal Irom a fluid flowing
in tubes to another fluid outside the tubes, or vice versa; or, other moans of regulating
Liquid temperatures;
157)Thermal Sludge Gonditionar. A conditioning process by which heat is added for a protracted period
of time to Improve the dawaterablllly of sludgo by Iha solubilixing and hydraultxing of the smaller and
more highly hydralud sludge parlicfes:
(58)Toxic Malaria4. Those wastes or combinations of waslas including disoase•causing agents which
after discharge and upon exposure, ingaslion, inhalation or assimilation into any organism either
directly from the environment or indiroctly by ingestion through food chains, wilt cause death, disease,
behavioral abnofmaiilies, cancer, genetic mutations, physiological malluncttons (including malfunctions
in reproduction) or physical doformalicns, in such organisms or their offspring; Toxic materials
include, by way ifluslralion and not limitation: lead, cadmium, chromium, mercury, vanadium,
arsenic, zinc. ortho-nilrc-chlorabenzene (CNCB polychlorinaled biphanyls (PCBs) and dlchlorodiphenyl
trichtoroothane (DDT); and any other materials that have or may hereafter be determined to have toxic
pfooerttos:
(59)Trick(Ing 101ar. A blologlcal treatment unit consisting of material such as broken slono or rock
over which wastewater Is dislribulod; A high rate trickling Biter is one which is operated at between
10 and 30 mgd per acre_ A tow rate trickling filter is one which Is deslgriod to operate at one to four
mgd per acre;
(60)Trickling Filter (Packed Tower). A plug flow typo of operation In which wastewater flows down r
through successive ' ors idia or filtrate malarial; Organic malarial is removed conlinvally b�
Wive biological fix tch successive layer. This method may produce 'secondary- -quality
effluL,-A'or may be .—ple educe a nilrilied effluent;
(61)1uum Filters, Cenlriluges, or Filler Presses. Devices which are designed to remove excess
n disposal of further
I RATING SCALE FOR CLASS11=1CAIlUN UI- 1-ACII-ITIr.r
Name
of Plant:
4VeL
C�� Co'sw 9ik on
Owner
or Contact
Person:
Mailing
Address:
�, IP kO?
bounty:_
1-evikIrd
Telephone:
`
NPDES
Permit No.
NCQO
Expiration Date:
Issue
Date:
Nondisc. Permit No. WQEecc-�_'c_;27 Expiration Date:
3G l9gd
Issue Date: 7, M�
Rated By: T 5e2wicf— Date:
Reviewed (Train. & Cert.) Reg. Office
Reviewed (Train. & Cert.) Central Office
ORC Grade
PEant Class: (circle one) II III IV
ITEM
(1 )
(2)
POINTS
Industrial Pretreatment Units andlor,
Industrial Pretreatment Program
(see definition No. 33)
DESIGN FLOW OF PLANT IN GPD
(not applicable to non -contaminated cooling
waters, sludge handling facilities for water
purification plants, totally closed cycle
systems (def. No. 11), and facilities
consisting only of Item (4) (d) or Items (4) (d)
and (1 1) (d))
0 20,000.........................
20,001 - 50,000..........................
50,001 -- 100,000..........................
100,001 -- 250,000..........................
250,001 - 500,000..........................
500,001--1,000,000 ..........................
1,000,001 -- 2,000,000 ............ I ... _ ... I ...
2,000,001 (and t1p) - rate 1 point additional for each
200,000 gpd capacity up to a
maximum of 30
Design Flow (gpd) :
4
1
2
3
4
5
8
10

R e1sR�
coniaming inorganic, nun -toxic rnatnrt ­­ ­—, y a.o, ... . ­ ...., w ... ­---- -.
from which there Is no dischargo la the surface watots; such syslams •hall carry a maximum of two
points regardless of pumping facilities or any other appurtonancos,
(12)Combinsd Removal of Carbonaceous BOO and Nitrogenous Remo in - A Single s:;,a
PRCLIMihIATiY
lJl`fl'lS (see definition no. 3?_)
synlom -dnsignnd' to achlovo 'advanced' permit nllllrnnt limits on ni., —id aMeonia nitrogen within
(a)
Bar Screens ... .. . ....... ...................
j
the samo biological reactor.
(13)Do-chlorination. The partial or complete reduction of residual ch€orino in a liquid by any chemseal
(b)
0 r
Mechanical SCf-CCns, Static Screens or
or physical process:
(tq)Donilrificalion proms;. Thn conversion of nitrtta-nitrogen la n;trognn gas:
(15)Eloclrodfalysis. Process for removing ionized sails from water through the use of ion -selective
Comminuting Devices ........... ........... • •
2
ion -exchange membranes,
(c)
Grit Removal .................... • . • .. • • .. •
I
(IS)Filter Press- A process operated mechanically for partially dewafering sludge;
(17)Foam Separation. The planned frothing of wastewater or wastowalar effluent as a moans of
o r
removing excessive amounts of detergent materials Through the introduction of air in the form of fine
(d)
Mechanical or Aerated Grit Removal ...........
2
bubbles; also called foam fractionation;
(e)
Flow Measuring Device .......................
i
(18)Grit Removal. The process of removing grit and other heavy minorat matter from wastewater;
(19)Imholf Tank. A deep Iwo story wastewater lank consisting of an upper sedimentation chamber and
or
2
a lower sludge digestion chamber;
/low;
(f)
Instrumented Flow Measurement . _ ..... ....
(20)Instrumonlod Flow Measurement. A device which indicates and/or records rate of
(g)
Preaeration .................. • • • . • • • • • • . . .
2
(21)lon Exchange. A chemical process in which ions from Iwo different molecules aro exchanged;
(22}1_and application: (a) Sludge Disposal. A final sludge disposal method by which sludge may be
2
applied to land either by spraying on the surface or by subsurface injection (i.e., chisel plow); (not
(h)
Influent Flow Equalization .. . ... . .. ... . . .. . .
Q
applicable for types of sludge described in (11) of this Rule]; (b)Treated Effluent. The process of
land area or other methods of application of wastewater onto a
(I)
Grease or Oil Separators - Gravity ..........
spraying treated wastewater onto a
Mechanical . ... ... . .
rand area as a means of final disposal and/or Irealment;
Dissolved Air Flotation.
8
(23)Mlcroscreen. A low speed, continuously back -washed, rotating drum filler operating under
gravity conditions as a polishing method removing suspended solids from offluoni;
(])
Prechlorination .............................
5
(24)Nitrifiearion Process, The biochamical convorsion of unoxidized nitrogen (ammonia and organic
() PRIMARY
TREATMENT UNITS
2
nitrogen) to oxidized nitrogen (usually nitrate):
(25)Nitrogenous Stage. A soparnta stage of wastowalar treatment dosignod for tho specific purp ai
(a)
Septic Tank (see definition no. 43) ........... . ..
converting ammonia nitrogen to nitrate nitrogen;
(b)
Imhoff Tank .. . ..................... • • . • • • • • . •
5
(26)Phosphats Removal Siolbgical. The removal of phosphorus from w2stewaler by an oxictAoxic
by
5
process designed to enhance luxury uptake of phosphorus the microorganisms;
(C)
Primary Clarifiers .......... ... .. ..
for Inorganic
(27)PolisWng Pond. A holding pond following secondary treatmenl with sufficient detention to allow for
(d)
Settling Ponds or Settling Tanks
the settling of finely suspended solids;
Non -toxic Materials (sludge handling facilities
(28)Pcst Aeration. Aeration following conventional secondary treatment units to increase effluent D.O.
for water purification, plants, sand, gravel,
or for any other purpose;
(2e)Post Aeration. (Cascade) A polishing method by which dissolved oxygen is added to the effluent by
stone, and Other mining operations except
a nonmechanical, gravity means of flowing down a series or steps or weirs: The fiow occurring across
recreational activities such as gem Or gold
the steps or weirs moves in a fairly thin layer and the operation of the cascade requires no operator
2
adjuslrnenl; thus, zero points are assigned oven though this is an ossontiat slop to mooling the limits of
reining) ' . ' • • • • . • • • . "
tiro discharge permit,-
(5) SECONDARY TREATMENT UNITS
(30)Powderad or Granular Activated Carbon Feed. A biophysical carbon process that utilizes biological
(a)
Garl�onaceous Stage
activity and organic absorption by using powdered or granular activated carbon; Virgin and/or
is read Into the system;
i h Puri} oxygen System
(i)Aeration - g �] y9 y • . "
20
regenerated carbon controlled
(31)Proaoration. A lark constructed to provide aeration prior to primary treatment;
Units. Unit operations In the Iroatmant process, such as screening and comminution,
Diffused Air System ...........
(32)Preliminary
Mechanical Air System (fixed,
Thal prepare the liquor for subsequent major operations;
(33)Induslrial Pretreatment: (a)Pre-Ireatmenl Unit, Industrial. The conditioning of a waste at its
floating or rotor) ..............
8
Source before discharge, to remove or to neutralize substances injurious to sewers and Irealme?1l
Separate Sludge Reaeration -
3
processes or to affect a partial reduction in load on a treatment process which is operated by the same
Filter
governing body as the wastewator treatment plant being rated; (b)Pre-irealmenl Program, Industrial -
(II) Trickling
7
must be a State or EPA rog0ad program to receive paints on the rating sheet;
High Rate .... ............. . .
(34)Pdmary C{arifiars. The first settling tanks through which wastewater is passed in a treatment
Standard Rats ...............
J
works for the purpose of removing settleable and suspended solids and BOO which is associated with the
Packed Tower ...............
5
solids:
(35)Pumps. All influent, effluent, and in•plaw pumps;
(i i i) Biological Aerated Filter or Aerated
(3G)fnadi-.AlW%. D;sinloclion and/or morilizallon procase. ulilir.inrd dovicon omitting Or•aviolot or pamma
Biological Filter .... I .. , .. , ..... • . • • • •
1 0
(37)Roverse OSMOSIS. A Iroatmont process In whicn a heavy contaminated liquid is prossurized
1 0
through a membrane forming nearly pure liquid froo from suspended solids;
(iv) Aerated Lagoons ............. I ....... .
10
(38)Rolaling Biological Conlactors, A fixers biological growth process in which wastewater stows
(V) Rotating Biological Contactors
i f
through tanks in which a series of partially submerged circular surfaces are related;
(39)Sand Flllers:(a)inlerm)ltont Biological. Filtralion of effluent following septic tanks, lagoons, or
some other troalmont process in which Iurlhor biodocomposition is oxpected to produce desired
offluonts; Hydraulic loading rates on thaso fillers are computed in gpolac and have a resulting low
gpm/sf (lass than one); (b)RecirculaLing biological - the same type of sand filler as donned in (a) with
the added capability to recycle effluent back through Iho sand filter;

d
(e)
Electrodialysis ...................... . .......
5
(f)
Foam Separation .................... . ........
5
(g)
Ion Exchange ................................
5
(h)
Land Application of. Treatod Effluent
(see definition no. 22b) (not applicable for
sand, gravel, stone and other similar mining
operations)
(8)
(i) on agriculturally managed sites (See def_
No.4)...................................
10
(I i) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) ...........
4
(iii) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) .............................
4
(i)
Microscreens..................................
5
(j)
Phosphorus Removal by Bloiogical Processes
(9)
(See def. No. 26) .............................
20
(k)
Polishing Ponds - without aeration .......
2
with aeration ..........
5
(1)
Post Aeration - cascade ..............
0
diffused or mechanical . . .
5 (10)
(m) Reverse Osmosis .......... ..................... 5
(n)
Sand or Mixed -Media Filters - low rate ...........
2
high rate ..........
5
(o)
Treatment processes for removal of metal or
cyanide....................................
15
(p)
Treatment processes for removal of toxic
materials other than metal or cyanide . _ .. .....
1 5
(7) SLUDGE TREATMENT
(a)
Sludge Digestion Tank - Heated ...............
1 0
Aerobic ...............
5
Unheated ...... ........
3
(b)
Sludge Stabilization (chemical or thermal) _ . . . . . .
5
(c)
Sludge Drying Beds - Gravity . ................
2
Vacuum Assisted .......
5
(d)
Sludge Elutriation .............................
5
(e)
Sludge Conditioner (chemical or thermal) ........
5
(f)
Sludge Thickener (gravity) ......................
5
(g)
Dissolved Air flotation Unit
(not applicable to a unit rates as (3) (i) , ........
8
(h)
Sludn- Gas Utilization (including gas storage) . . . .
2
(i) Sludge Holding Tank - Aerated ................
5
Non -aerated .... _ .......
2
(j) Sludge Incinerator - (not including activated
V
carbon regeneration) .....
10
(k) Vacuum Filter, Centrifuge or Filter Press or other
similar dewatering devices ....................
1 D
SLUDGE DISPOSAL (including incinerated ash)
(a)Lagoons........................................
2
(b) Land Application (surface and subsurface)
(see definition 22a)
-where the facility holds the land app. permit .
10
-by contracting to a land application operator wh.
holds the land application permit .... . .........
V. 2
-land application of sludge by a contractor who does
not hold the permit for the wastewater treatment
facility where the sludge is generated .. .......
10
(c) Landfilled (burial) .............................
5
DISINFECTION
(a) Chlorination ..............................
(b) Dechlorination ....... . ................
5
(c) Ozone ..............................
5.
(d) Radiation ..........................
5
CHEMICAL ADD17ION SYSTEM (S) (See definition No. 9)
(not applicable to chemical additions rated as item
(3) (j), (5) (a) (xi), (6) (a). (6) (b), (7) (b), (7) (e),
(9) (a), (9) (b), or (9) (c) 5 points each: List;
5
5
5
5
(11) MISCELLANEOUS UNITS
(a)
Holding Ponds, Holding Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
from mining operations containing nitrogen and/or
phosphorous compounds in amounts significantly
greater than is common for domestic wastewater ..........
4
(b)
Effluent Flow Equalization (not applicable to storage
basins which are inherent in land application systems).
2
(c)
Stage Discharge (not applicable to storage basins
inherent in land application systems .......................................
5
(d)
Pumps.....................................................................................................
-0
(e)
.Stand -By Power Supply...... ................................... ............. ..........
3
(f)
Thermal Pollution Control Device .............................................
3

TOTAL POINTS 2 C)
CLASSIFICATION
Class))........................................................... 5 - 25 Points
sII ....................................................... 26- 50 Points
Class1I1....................................................... 51- 65 Points
Class IV ........................................................ 66- Up Points
Facilities having a rating of one through four points, inclusive,
do not require a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible
charge.
Facilities having an activated sludge process will be assigned
a minimum, classification of Class ll.
Facilities having treatment processes for the 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.
DEFINITIONS
(1)Activated Carbon Beds, A physicallchomical method for reducing soluble organic material from
wastewater effluent; the column•lypo beds used in this method will have a flow rate varying from two
to eight gallons per minute per square Tool and may be either upflow or dawn€low carbon beds. Carbon
may or may not be raguneralad on the wastewater treatment plant site.
(2)Asraled Lagoons. A basin In which all solids are maintained in suspension and by which biological
oxidation or organic matter is reduced through artificiaily accelerated transfer oI oxygen on a kw -
through basis;
(3)Aeralion. A process of bringing about intimate contact between air or high purity oxygen in a liquid
by spraying, agitation diffusion;
(d)Agriculturally managed silo. Any site on which a crop is produced, managed, and harvested (Crap
Includes grasses, grains, trees, etc);
(5)Air Stripping. A process by which the ammonium ion is first converted to dissolved ammonia (PH
adjustment) wish 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.
P)Centrifuge, A mechanical devica in which centrifugal force is used to separate solids from liquids
and/or to separate liquids of different densities;
(9)Chemical Addition Systems - The addition of chemical (s) to wastewater al an application point for
purposes improving solids removal, pH adjustment, alkalinily control, etc,; the capability to
exparimen rith different chemicals and different application points to achieve a specific result wi)( be
considered one system; the capability to add chemical (s) to dual units will be rated as one system;
'capabi to add a chemical al difference application points for different purposes will rosult-in the
systern0being rate as separate system.
(to)Chomical Sludge conditioning. The addition of a chemical compound such as lime, ferric chloride, or
a polymer to wel sludge to coalesce the mass orior to its application to it dewatering device;
(vi.)
Sand Filters -
intermittent bioicgical
2
recirculating biological . . . . .
3
(vii) Stabilization Lagoons ...................
5
(viii)Clarifier ..............................
5
(ix)
Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrification
(see def. No. 12) (Points for this item
have to be in addition to items (5) (a)
(i) through (5) (a) (viii) .................
8
(x)
Nutrient additions to enhance BCD
removal ...............................
5
(xi)
Biological Culture ("Super Bugs") addition
to enhance organic compound removal .....
5
(b) Nitrogenous Stage
(i)
Aeration - High Purity Oxygen System .....
20
Diffused Air System .. _ ........
10
Mechanical Air System (fixed,
floating, or rotor) ...... ......
8
Separate Sludge Reaeration .....
3
(ii)
Trickling Filter -
High Rate ..............
7
Standard Rate ............
5
Packed Tower............
5
(i i i)
Biological Aerated Filter or Aerated
Biological Filter .........................
10
(iv)
Rotating Biological Contactors ............
10
(v)
Sand Filter -
intermittent. biological .. . . .. ..
2
recirculating biological . .... ...
3
(vi)
Clarifier .......... . .....................
5
(6) TERTIARY OR ADVANCED TREATMENT UNIT
(a) Activated Carbons Beds -
without carbon regeneration ........ . ......... S
with carbon regeneration ... . ................ 15
(b) Powdered or Granular Activated Carbon Feed -
without carbon regeneration ...... . .......... 5
with carbon regeneration ................... 15
(c) Air Stripping ........... . ................. 5
(d) Denitrification Process (separate process) . . . . . 10