WQ0002056_Final Permit_19910709

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. Edgar Earl Gatlin
Gatlin Ramsey Mobile Home Park
145 Hubert Blvd.
Hubert, North Carolina 28539
Dear Mr. Gatlin:
George T. Everett, Ph.D.
Director
July 9, 1991
Subject: Permit No. WQ0002056
Gatlin Ramsey Mobile Home Park
Spray Irrigation Wastewater
Treatment and Disposal System
Onslow County
In accordance with your application received April 9, 1991, we are forwarding herewith
Permit No. WQ0002056, dated July 9, 1991, to Gatlin Ramsey Mobile Home Park for the
operation of the subject spray irrigation wastewater treatment and disposal facility.
This permit shall be effective from the date of issuance until June 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.
Issuance of this permit hereby voids Permit No. WQ0002056 issued February 2, 1990.
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. Drawer 27447, Raleigh, NC 27611-7447. Unless such demands are made this
permit shall be final and binding.
If you need additional information concerning this matter, please contact Mr_ John
Seymour at 919/ 733-5083.
cc: Onslow County Health Departmen
Wilmington Regional Office
Groundwater Section
Training and Certification Unit
Facilities Assessment Unit
z
Pollution Prevention 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
SPRAY IRRIGATION SYSTEM 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
Gatlin Ramsey Mobile Home Park
Onslow County
FOR THE
operation of a 90,000 GPD spray irrigation wastewater treatment and disposal facility consisting of
two 3.6 acre lagoons in series, a 2.0 acre storage lagoon, existing gaseous chlorination facilities,
an irrigation pump station with a 310 GPM pump and a 200 GPM pump, 18.6 acres of irrigation
disposal area, and associated valves, piping, and appurtenances to serve Gatlin Ramsey Mobile
Home Park with no discharge of wastes to the surface waters, pursuant to the application received
April 9, 1991 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 June 30, 1996, and shall be
subject to the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
The spray irrigation facilities shall be effectively maintained and operated at all times so
that there is no discharge to the surface waters, nor any contamination of ground waters
which will render them unsatisfactory for normal use. In the event that the facilities fail
to perform satisfactorily, including the creation of nuisance conditions or failure of the
irrigation area to adequately absorb the wastewater, the Permittee shall take such
immediate corrective action to correct the problem, including actions as may be required
by the Division of Environmental Management.
2. 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.
3. The 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.
4. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.

5 . The following buffers shall be maintained:
a) 400 feet between wetted area and any residence under separate ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drainageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells,
g) 50 feet between wastewater treatment units and property lines.
11. OPERATION AND MAINTENANCE REQIJTREMENTS
I. 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.
3. A suitable vegetative cover shall be maintained.
4. Irrigation shall not be performed during inclement weather or when the ground is in a
condition that will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. 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.
7. The application rate shall not exceed: 1.25 inches per week per acre.
8. No type of wastewater other than that from Gatlin Ramsey Mobile Home Park shall be
sprayed onto the irrigation area.
9. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
10. Public access to the land application sites shall be controlled during active site use. Such
controls may include the posting of signs showing the activities being conducted at each
site.
III. M NIT RI AND__REPORTTNG REOUTREMENTS
Any monitoring (including groundwater, surface water, soil or plant tissue
analyses) 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.
►a

2. Adequate records shall be maintained by the Permittee tracking the amount of wastewater
disposed. These records shall include, but are not necessarily limited to the following
information:
a) date of irrigation,
b) volume of wastewater irrigated,
c) field irrigated,
d) length of time field is irrigated,
e) continuous weekly, monthly,
for each field,
f) weather conditions, and
g) maintenance of cover crops.
and year-to-date hydraulic (inches/acre) loadings
3. The effluent from the subject facilities shall be monitored by the Permittee at the point
prior to irrigation every February, June, and September for the following parameters:
Parameter
BOD5
TSS
Fecal Coliform
pH
NH3 as N
4. Three copies of all operation and disposal records (as specified in condition rII 2) and
all effluent monitoring data (as specified in condition III 3) and any other data as may be
required shall be submitted on or before the last day of the following month to the
following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 27626-0535
5. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office,
telephone no. 919/ 395-3900, 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 sludge digester; 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.
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 has gone out of
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. qROUNDWATER REQUIREMENTS
1. The five (5) existing monitor wells shall continue to be sampled every February,
June, and September for the following parameters:
NO3 (10.0)
TOC
Ammonia Nitrogen
Water Level
Total Suspended Solids
Volatile Organic Compounds -
TDS (500.0)
pH ( 6.5-8.5 standard units)
Chloride (250.0)
Fecal Coliforms (1/100 ml)
In September only (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
The measurement of water level must be made prior to sampling for the remaining
parameters.
The measuring points (top of well casing) of all monitoring wells shall be
surveyed to provide relative elevations of the measuring point for each of the
monitoring wells. The depth of water in each well shall be measured from the
surveyed point on the top of the casing.
The numbers in parentheses represent the maximum allowable concentrations in
groundwater for the various analytical parameters, as specified in 15 NCAC 2L
[Groundwater Classifications and Standards]. Unless otherwise noted, the
concentrations are given in parts per million.
If TOC concentrations greater than 10 mg/l are detected in any downgradient
monitoring well, additional sampling and analysis must be conducted to identify
the individual constituents comprising this TOC concentration. If the TOC
concentration as measured in the background monitor well exceeds 10 mg/l, this
concentration will be taken to represent the naturally occurring TOC concentration.
Any exceedances of this naturally occurring TOC concentration in the downgradient
wells shall be subject to the additional sampling and analysis as described above.
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 analysis 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 N.C. Division of
Environmental Management on Form GW-59 (Compliance Monitoring Report
Form) every March, July, and October.
19

2. The Compliance Boundary for the disposal system is specified by regulations in 15
NCAC 2L, Classifications and Water Quality Standards applicable to the
groundwater of North Carolina. An exceedance of Groundwater Quality Standards
beyond the Compliance Boundary is subject to penalty provisions applicable under
General Statute 143-215.6(1)a. The sale of property, by the Permittee, which is
within or contiguous to the disposal system site may alter location of the Compliance
Boundary.
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the lagoon and spray fields, or 50 feet
within the property boundary.
If the title to any property which may affect the location of the Compliance Boundary
is changed, the permittee shall notify the Division Director within 14 days. The
Director shall then establish a modified Compliance Boundary which will be done as
a modification to the Permit.
The REVIEW BOUNDARY for the disposal system is specified by regulations in 15
NCAC 2L, Groundwater Classifications and Standards. A REVIEW
BOUNDARY is established around disposal systems midway between the
Compliance Boundary and the perimeter of the waste disposal area. When the
concentration of any substance equals or exceeds the maximum allowable
concentration of that substance at the REVIEW BOUNDARY, as determined by
monitoring, the permittee shall either (i) demonstrate, through predictive calculations
or modeling, that natural site conditions, facility design and operational controls will
prevent a violation of standards at the Compliance Boundary; or, (ii) submit a plan
for the alteration of existing site conditions, facility design or operational controls
that will prevent a violation of standards at the Compliance Boundary, and
implement that plan upon its approval by the Director.
3. Any additional groundwater quality monitoring, as deemed necessary by the
Division, shall be provided.
4. The drainage ditches around the spray irrigation field shall be maintained.
V . INSPECTION
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 wastewater treatment and disposal
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.
G

VI. ,-ENE,RAL CQNDITIONS
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 pennit 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. FaiIure 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.
5. 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.
6. Prior to any transfer of this land, a notice shall be given to the new owner that gives full
details of the materials applied at this site.
7. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
8. The annual administering and compliance fee must be paid by the Permittee within thirty
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 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.
10. The subject wastewater treatment and disposal facilities shall be connected to an
operational publicly owned wastewater collection system within 180 days of its
availability to the subject facilities, if the subject wastewater treatment or disposal
facilities are in noncompliance with the terms and conditions of this non -discharge
permit or the governing statutes or regulations.
Prior to the initiation of these connection activities, appropriate approval must be
received from this Division.
on

11. Issuance of this permit hereby voids Permit No. WQ0002056 issued February 2, 1990.
Permit issued this the 9th day of July, 1991
NO TH CAROLINA E IRO MENTAL MANAGEMENT COMMISSION
George T. Everett, D'
Division of Environmental Management
By Authority of the Environmental Management Commission
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�0 Sand--or�Mixed•Media Filters. R polishing process b which effluent limits are achieved through a
(,r.l,„ r P 9 A Y
furlhor:reduclion of suspended solids:fa)low rate -- gravity, hydraullcalfy loaded filter with loading
ra[ar"fri Jito one to three gpmrsf rango;(b)high rate •- a press hydraulically loaded [liter with loading
Was In the five gpm7sl range; At any rate, lho loading rate will oxcoed throe gp /ul;
(41)Socondary Clar(flors, A lank which follows ilia biological unit of a treatment plant and which has
the purpose of removing sludge associated wilh the blologlcal treatment units;
(42)Saparate Sludge Reaeradon- A pan of lha contact stabilization process where the activated sludge
is translarrad to a lank and aerated before (elurning It to the basln;
(43)Seplic Tank. A single-slory sooting lank In which settled sludge Is..ln FF�o at with the w slewaler
flowing through the tank; shall not be applicable for septic lank syslem?;r �tYrn R ZP yrr��lnr1S dr, Li55
loss which discharge to a nitrification lield; •
i44)Siudgo Dlgesllon. The process by which organic or volatile matter and sludge Is gaslfled, liquefied,
minarailzod or converted into more stable organic mailer through the activity of living organisms,
which includes aerated holding ranks;
(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)Sludga.Eiutriallon. A process of sludge conditioning In which cwtaln conslituenls are removed by
successive washings with fresh water or plant effluent;
(47)Sludge Gas UIIIilatlon. Thu procoss of using sewage gas lot the purpose of heating buildings,
driving engines, elc.;
(48)Sludge Holding lank (Aerated and Nonaeraled). 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 (i.e. sludge drying beds); Thls may be done by adding a small amount of air simply to
keep the sludge fresh, bul nol necessarily an amount that would be required to achleve stabilization of
organic matlir, A nonaeraled lank would simply be used to decant sludge prior to dowalering and would
simply be used to decant sludge prior to dewalering and would not allow long periods (several days of
detention) without resulting odor problems;
(49)Sludge Incinerators. A furnace designed to burn sludge and to remove all molsture and combustible
materials and reduce rho sludge to a storilo ash;
(SC)Sludge Stabilization (Chemical or Thermal). A procoss to make treated sludge less odorous and
putrescrible, and to reduce the pathogenic organism content; This may be done by pH adjustment
chlorine dosing, or by heat treatment;
(51)Sludge Thlckonor. A type of sedimentation tank in which the sludge Is permitted to settle and
thicken through agitation and gravity;
(52)Slabllizalion Lagoon, A type of oxidalion 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 electric&! generating equipmenl;(54) Static Screens.
A stationary screen dasignod to removo solids Including non -biodegradable parlfcuiate (ffoalable solids,
suspended solids and BCD reduclion) from municipal and industrial
wastewater treatment systems;
(55)Tertiary Traalment. A stage of treatment following secondary which is primarily for the purpose
of effluent polishing; A sapling lagoon of sand or coal filter might be employed for this purpose,
(56)Thermal Pollution Control Device. A device providing for the transfer of heat from a fluid flowing
in lubes to another nuid outside, the tubes, or vice versa; or, other means of regulaling
liquid lemperalures;
(57)Thermal Sludge Conditioner. A conditioning process by which heat is added for a protracted Period
oI time to improve the dewatarablllly of sludge by the solublllzing and hydraulfzing of the smaller and
moro highly hydraiod sludgu panicles;
(5e)Toxic Maleriats. 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, genetic mutations, physiological malfunctions (including malfunctions
in reproduction) or physical deformations, in such organisms or their offspring; Tokic materials
include, by way illustration and not limitation: lead, cadmium, chromium, mercury, vanadium,
arsenic, zinc, ortho-nitro-chlorabenzene, (ONCE polychlorinated biphanyls (PCBs) and dichlorodiphenyl
16chlcroothane (DDT); and any other materials that have or may hereafter be determined to have toxic
ereaerlles;
(59)Trickling tiller. A biological Ireatmeni unit consisting of material such as broken stone or rock
over which wastewater Is distributed; A high rate Irtckling filler is one which is operated al between
10 and 30 mgd per acre. A low rate trickling filler Is one which Is designed to operate at one to four
mgd per acre;
(6o)Trickling Filter (Packed Tower). A plug Now typo of operation In which wastewater flows down
Through successive layers of media or filtrate material; Organic material Is removed continually b�'
active biological fixed In each successive layer. This method may produce 'secondary' qualiiy
eltluarA or may be a4 , produce a nitrified effluent;
(61)`uum Filters, Ce .es, or Filler Presses. Devices which are designed to remove excess
water from either digested or undigested sludge prior to disposal of further
RATING SCALE FOR CLASSIFIUA i IUIJ UI: l ACILITIC'�
Name of Plant: (!rf
Owner or Contact Person: '
Mailing Address: ' 1 J✓� rt C �'�
('aunty: o Telephone: `
NPOES Permit No. NCDfl Expiration Date:
-issue Date:
Nondisc. Permit No. 1n_,'r1cec2r;"5-6'
Issue Date: T,,jfv V
Rated By: ' t
Expiration Dater ve
Dale: G;1�,b.-/ I —
Reviewed (Train. & ert.) Reg. Office —
Reviewed (Train. & Cert.) Central Office
ORC Grade
Plant Class: (circle one) I 11 111 IV
ITEM POINTS
(1) Industrial Pretreatment Units and/or.
Industrial Pretreatment Pfografn
(see definition No. 33)
4
(2) DESIGN FLOW OF PLANT IN CPD
(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 (11) (d))
0 -- 20,000..........................
1
20,001 - 50,000..... . ... ..............
2
50,001 -- 100,D00 ......... . ............. . ..
0
100,001 -- 250,000 ....... . ................ . .
4
250,001 -- 500,000 ..... . ....................
5
500,001--1,000,000 ...... . ........ . ..... . ...
8
1,000,001 -- 2,000,000 ...... - .... I I ........ I ..
10
2,000,001 (and up) - rate 1 point additional for each
200,000 gpd capacity up to a
maximum of 30
Design Flow (gpd) :

(3) PRELIMINARY UNITS (see definition no. 32)
(a)
Bar Screens ................................
1
or
(b)
Mechanical Screens, Static Screens or
Comminuting Devices ........... I ............
2
(c)
Grit Removal ...............................
1
or
(d)
Mechanical or Aerated Grit Removal ...........
2
(e)
Flow Measuring Device .. . ....................
1
(f)
or
Instrumented Flow Measurement ...............
2
(g)
Preaeration................................
2
(h)
influent Flow Equalization ...................
2
(i)
Grease or Oil Separators - Gravity ..........
2
Mechanical ....... , . ,
3
Dissolved Air Flotation.
8
{j)
Prechlorination ..............................
5
(4) PRIMARY
TREATMENT UNITS
(a)
Septic Tank (see definition no. 43) .. . ...........
2
(b)
Imhoff Tank ..................................
5
(c)
Primary Clarifiers ..... . ......................
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 or gold
alining) ......................................
2
(5) SECONDARY TREATMENT UNITS
(a)
Carbonaceous 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 date ...............
5
Packed Tower ...............
5
(lit) Biologic-ai Aerated Filter or Aerated
Biological Filter ......................
1 0
(iv) Aerated Lagoons .................. . .. .
1 0
(v) Rotating Biological Contactors .... . . . . . .
10
containing Inorganic, non -toxic materials from sand, gravel, crushed stono or other similar operations,
from which there Is no discharge to the surface waters; such systems shall carry a maximum of two
points regardless of pumping facilities or any other appurtenances;
(12)Combined Removal of Carbonaceous SOD and Nitrogenous Removal by Nitrification - A singly stage
system 'designed' to achieve 'advanced' permit effluent limits on BOR and ammonia niiroge5i within
the same biological reactor.
(13)De-chlorinatlon, The partial or complete reduction of residual chlorine in a liquid by any chemical
or physical process;
(14)Dnnitriflcallon Prornss. Thn convorslon of nllrato-nilrogon to nilrognn gas;
(15)Electrodialysis. Process for removing ionized calls from water through the use of ion•seleclive
ion -exchange membranes;
(16)Filler Press. A process operated mechanically for partially dewalering sludge;
(17)Foam Separation. The planned frothing of wastewater or wastewater effiuenl as a means Of
removing excessive amounts of dbtergent materials through the introduction of air in She form of fro
bubbles; also called foam fractionation;
(18)Grfl Removal. The process of removing grit and other heavy mineral matter from wastewater;
(19)Imhoff Tank, A deep two story wastewater lank consisting of an upper sedimentation chamber and
a lower sludge digestion chamber;
(20)Insirumented Flow Measurement. A dovice which indicates and/or records race of flew;
(21)Ion Exchange. A chemical process in which Ions from two different molecules are exchanged;
(22)i..and application: (a) Sludge Disposal. A final sludge disposal method by which sludge may be
applied to land 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 wastewaler onto a
land area as a means of final disposal and/or lrealmenl;
(23)Mieroscreen. A low speed, continuously back -washed. rotating drum filter operating under
gravity conditions as a polishing method removing suspended solids from efiluonl;
(24)Nilrificatian Process. The blochomical convorsion of unaxidizod nitrogon (ammonia and organic
nitrogen) to oxidized nitrogen (usually nilrato):
(25)Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purplx of
converting ammonia nitrogen to nitrate nitrogen;
(26)Phosphals Removal Biolbglcal. The removal of phosphorus from wastewater by an oxiG.*oxic
process designed to enhance luxury uptake of phosphorus by the microorganisms;
(27)Polishing Pond. A holding pond fol€owing secondary treatment with sufficient detention to allow for
the settling of finely suspended solids;
(28)Post Aeration. Aeration following convemlional secondary treatment units 10 increase effluent D.D.
or for any other purpose-,
(29)Post Aeration. (Cascade) A polishing method by which dissolved oxygen is added to the effluent by
a nonmschanical, 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
adjustmenl; thus, zero points are assigned even though this is an essential step to meeting the limits of
the discharge permit;
(30)Powdered or Granular Activated Carbon Feed, A biophysical carbon process that utilizes biological
activity and organic absorption by using powdered or granular activated carbon; Virgin and/or
regenerated carbon Is feed controlled Into the system;
(31)Preaerallon. A lank constructed to provide aeration prior to primary Treatment;
(32)Prolimtnary Units. Unit operations in the treatment process, such as screening and comminution,
that prepare the liquor for subsequent major operations;
(33)lndusirlal Pretreatment: (a)Pre.lrealment Unit, industrial. The conditioning of a waste at its
source before discharge, to remove or to neutralize substances injurious to sewers and Ireatme'nI
processes or to effect a partial reduction in load on a treatment process which is operated by the same
governing body as the wastewater treatment plant being rated; (b)Pre•trealmoni Program, Industrial -
must be a State or EPA required program to receive points on the rating shoe[;
(34)Primary Clarifiers. The first settling tanks through which wastewater is passed in a'lroatmant
works for tho purpose of removing settleable and suspended solids and 900 which is associated with the
solids:
(35)Pumps. All influent, effluent, and in -plant pumps;
(36)r1tndintion, Dislnfoctlon and/or slorilizn lion procoss ulilizinrd devicos omlo;ng ulnav;olol or Gamma
(37)Raverse Osmosis. A treatment process in which a heavy contaminated liquid is prossurized
through a membrane forming nearly pure liquid free from suspended solids;
(38)Rotating Biological Contactors, A fixed biological growth process in which wastewater flows
through tanks In which a series of partially submerged circular surfaces are rofaled;
(39)8and Fillers;(a)fnlermltlonl Biological. Filtration of affluent following septic tanks, lagoons, or
some other treatment process in which furlhor biodecomposition is axpected to produce doskod
offluonls; Hydraulic loading rates on these fillers are computed In gpdt have a rosu{ting-low
gpmfsf (less than one); (b)Recirculaling biological • the same type of sa as dofined in (a)+vilh
the added capability to recycle effluent back through Iho sand filter,

TOTAL POINTS^
CLASSIFICATION
Clash..................
........ ............................. 5 -
25
Points
Class IL .......................................................
26-
50
Points
Class hl.......................................................
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 II.
Facilities having treatment processes for the removal of metal
or cyanide will be assigned a minimum classification of Class il.
Facilities having treatment processes fqr the biological removal
of phosphorus will be assigned a minimum classification of Class
III.
7�FihiITI0N5
:1)Aclivaied Carbon Beds, A physicallchemical method for reducing soluble organic material from
vastewater effluent; the column -typo beds used in this method will have a flow rake varying from two
:o eight gallons per minula per square foot and may be either upflow or downllow carbon beds. Carbon
may or may not be regeneraled on the wastewater lrealment plant site.
2)Aeralad Lagoons. A basin in which ail solids are maintained in suspension and by which biological
jJca600 or organic mal(ar is reduced through artificially accelerated tfansfer of oxygen on a flow-
'.hrough basis;
,3)Aaration. A process of bringing about intimale conlacl between air or high purily oxygen In a liquid
�)y spraying, agitation diffusion;
;a)Agriculiurally managed silo. Any site on which a crop is produced, managed, and harvostod (Crap
Includes grasses, grains, hoes, otc);
;5)Air Stripping. A process by which the ammonium ion is first converted to dissolved ammonia (pH
adjustment) with the ammonia than released to the atmosphere by physical means; or other similar
processes which remove petroleum products such as benzene, toluene, and xylene.
(5)Carbon Regeneration. The rageneralion of exhausted carbon by the use of a furnace to provide
extremely high temperatures which volatilize and oxidize the absorl>od Impurities:
7)Carbonaceous Stage, A stage of wastewater treatment designed to achieve 'secondary" effluent
liml ts.
;8)CenA1u9e, A mechanical device in which centrifugal force Is used to separate solids Irom liquids
andlor to saparale liquids of different densities;
(9)Chamical Addition Systems - The addition of chemical (s) to wastewater at an application point lot
purposes of improving solids removal, pH adjustment, alkalinity control, etc.; the capability to
axparimant`wilh different chemicals and different application points to achieve a specific result will be
considerAd cna system; the capability to add chemical (s) to dual units will be rated as one system;
capabil, to add a chemical_ at difference application points for difforonl purposes wiff result -in the
systam Bing rate as se' system. I
i1o)Chromical Sludge Cor The addition of a chemical compound such as lime, ferric chloride, or
a polymer to wet sludge i sco the mass prior to its application to a dewateriing device;
f i (vi)
Sand Filters -
intermittent biological . . . .
2
recirculating biological .....
3
(vii)
Stabilization Lagoons ...................
Q
(viii)Clarifier ..............................
5
(Ix)
Single stage system for combined
carbonaceous removal of SOD 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 BOD
removai ...............................
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 ...........
1 0
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 .........................
1 0
(iv)
Rotating Biological Contactors ............
10
(v)
Sand Filter -
intermittent biological . . . . . . . .
2
recirculating biological , . . .. ...
3
(v i)
Clarifier ................................
5
(6) TERTIARY OR ADVANCED TREATMENT UNIT
(a) Activated Carbons Beds -
without carbon regeneration .................. 5
with carbon regeneration . ... . ........... . .. 15
(b) Powdered or Granular Activated Carbon Feed -
without carbon regeneration . ... . ..... . ...... 5
with carbon regeneration ................... 1 5
(c) Air Stripping ............................. 5
(d) De,nitrification Process (separate process) . . . . , 1 0

(e) Eiectrodialysis ................ . ........... . .
(f) Foam Separation ........................ I ....
(9) Ion Exchange ................................
(h) Land Application of. Treated Effluent
(see definition no. 22b) (not applicable for
sand, gravel, stone and other similar mining
operations)
(i) on agriculturally managed sites (See def.
No.4)...................................
(i i) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) ....... , .. .
(iii) by subsurface disposal (includes low pressure
pipe systems and gravity systems except at
plants consisting of septic tank and nitrifica-
tion lines only) .............................
(i) Microscrcens..................................
(j) Phosphorus Removal by Biological Processes
(See def. No. 26) . . .......................... .
(k) Polishing Ponds - without aeration ...... .
with aeration ......... .
(1) Post Aeration - cascade ..............
diffused or mechanical . . .
(m) Reverse Osmosis ............................. .
(n) Sand or Mixed -Media Filters - low rate .......... .
high rate ..........
(o) Treatment processes for removal of metal or
cyanide....................................
(p) Treatment processes for removal of toxic
materials other than metal or cyanide ........ .
(7) SLUDGE TREATMENT
(a) Sludge Digestion Tank - Heated ...............
Aerobic . . ............ .
Unheated ...... .......
(b) Sludge Stabilization (chemical or thermal) . .
(c) Sludge Drying Beds - Gravity ............... . .
Vacuum Assisted ...... .
(d) Sludge Elutriation ............. . .............. .
(e) Sludge Conditioner (chemical or thermal) , .. .
(f) Sludge Thickener (gravity) ......................
(g) Dissolved Air Flotation Unit
(not applicable to a unit rates as (3) (i) ........ .
(h) Sludge Gas Utilization (including gas storage) . . . .
5
5
S
10
4
4
5
20
2
5
0
5
S
2
5
15
15
10
5
3
5
2
5
5
5
5
8
2
i
(i) Sludge Holding Tank - Aerated . . .. . ...........
5
Non -aerated ............
2
{}) Sludge Incinerator - (not including activated
carbon regeneration) .....
10
(k) Vacuum Filter, Centrifuge or Filter Press or other
similar dewatering devices ....................
10
(8) 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
1 0
-by contracting to a land application operator wh.
holds the land application permit ..............
W, 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) Landfiiled (burial) .............................
5
(9) DISINFECTION
(a) Chlorination ..............................
(b) Dechlorination ........ . ... . ...........
5
(c) Ozone ..............................
5
(d) Radiation ..........................
5
(10) CHEMICAL ADDITION 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 'n 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)..
(c) Stage Discharge (not applicable to storage basins
inherent in land application systems .......................................
5
(d) Pumps.....................................................................................................
3
(e) Stand -By Power Supply, ......... ................................... ..... ..... 3
(f) Thermal Pollution Control Device .............................................
3