WQ0000911_Final Permit_19910829

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor
William W. Cobey, Jr-, Secretary
Mr. William Robinson, Secretary/Treasurer
Walnut Island Sanitary District
Post Office Box 250
Grandy, North Carolina 27939
Dear Mr. Robinson:
George T. Everett, Ph.D
Director
August 29, 1991
Subject: Permit No. WQ0000911
Walnut Island Sanitary District
Subsurface Disposal System
Currituck County
In accordance with your application received May 6, 1991, we are forwarding herewith Permit No,
WQ0000911, dated August 29,1991, to Walnut Island Sanitary District for the continued operation of a
30,000 GPD wastewater collection, treatment, and subsurface disposal system.
This permit shall be effective from the date of issuance until July 31, 1996, shall hereby void
Permit Number WQ0000911 issued January 3, 1990, 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. 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. Dana Bolden at 919/
733-5083.
cc: Currituck County Health Department
Washington Regional Office
Groundwater Section
Training and Certification Unit
u
Regional Offices
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704/251-6208 9191486-1541 704/663-1699 9191733-2314 919/946-6481 919/395-3900 919/761-2351
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
RALEIGH
SUBSURFACE DISPOSAL 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
Walnut Island Sanitary District
Currituck County
FOR THE
continued operation of a 30,000 GPD wastewater collection, treatment, and subsurface disposal system
consisting of eleven 20 GPM pump stations, a 75 GPM pump station, 7,174 linear feet of four inch force
main, a 30,000 gallon septic tank, a 180 GPM effluent dosing station, and five 8,000 ft2 low pressure
pipe disposal fields to serve Walnut Island Sanitary District with no discharge of wastes to the surface
waters, pursuant to the application received May 6, 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 July 31, 1996, and shall be subject to
the following specified conditions and limitations:
I. PERFORMANCE STANDARDS
1. 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
as may be required by this Division, such as construction of additional or replacement
wastewater treatment or disposal facilities.
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. 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. Adequate measures shall be taken to divert stormwater from the disposal area and prevent
wastewater runoff from the subsurface disposal field.
5. 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.

6- A usable reserve area shall be maintained for wastewater disposal. The reserve area shall
have the capability of accommodating the average daily flow of the facility being served
without exceeding the loading rates of the reserve area while meeting all required buffer
requirements.
7. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
8. The following buffers shall be maintainedt:
a) 100 feet between disposal area and any public or private water supply including
wells
b) 100 feet between disposal area and "SA and SB" classified surface waters
C) 50 feet between disposal area and any stream, lake, river or natural drainageway
d) 50 feet between disposal area and property lines
C) 10 feet between disposal area and surface water interceptor drains or diversions
(upslope)
f) 25 feet between disposal area and surface water interceptor drains or diversions
(downslope) and groundwater drainage systems.
t - As this condition was not included in previous permits issued to Walnut Island Sanitary
District, these buffers do not apply to existing facilities, but can and do preclude any new
construction that would be in violation of this condition.
9. The Permittee shall provide for the pump station and force main the following items:
a. Pump on/off elevations located so that 2-8 pumping cycles may be achieved per
hour in the pump station.
b. An air relief valve located at all high points along the force main.
C. A screened vent for the wet well.
d. Fillets located in the wet well at the intersection of the flooring and sidewalls.
e. Three feet of cover (minimum) over the force main or the use of ferrous material
where three feet cannot be maintained.
f. Sufficient devices which will protect the pump station from vandals.
g. Flood protection if the pump station is located below the 100 -year flood elevation.
II. -OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. 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. The application rates to the disposal field shall not exceed 0.75 gallons per day per square
foot.
4. 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.
5. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
2

6. A suitable cover shall be maintained on the LPP field(s) and the field(s) shall be routinely
mowed. The clippings shall be periodically removed to prevent the build-up of thatch.
II. MONITORING AND REPORTING REQUIREMENTS,
1. 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. The low pressure lines shall be maintained as necessary (including purging of the lines and
pressure testing) in order to ensure that they remain free of obstructing materials and that
the pressure head on the laterals remains within the design specifications. The highest and
lowest laterals on each subfield shall be checked (and adjusted as necessary) annually to
ensure that the pressure heads are within the approved specifications. If adjustments are
necessary to the highest and lowest laterals, the remaining laterals in that subfield shall also
be checked and adjusted to the approved specifications. Adequate records showing all
maintenance shall be maintained by the Permittee. These records should include but are not
Iimited to the following:
Items Inspection Frequency
a) Individual dosing pump operation Monthly
b) Individual field rotation Monthly
C) High water alarms Monthly
d) Residual pressure on highest and
lowest lateral on each subfield Annually
3. Three copies of all operation and maintenance records (as specified in condition III 2) and
all effluent monitoring data (as specified in condition 111 3) shall be submitted on or before
January 31 of the following year to the following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 29535
Raleigh, NC 27626-0535
4. A record shall be maintained of all residuals removed from this facility. This record shall
include the name of the hauler, permit authorizing the disposal or a letter from a
municipality agreeing to accept the residuals, date the residuals were hauled, and volume of
residuals removed.
5. No- compliance . N21ifiration:
The Permittee shall report by telephone to the Washington Regional Office, telephone no.
[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 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.
3

Any failure of a pumping station, sewer line, or treatment facility resulting in a by-
pass 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 four (4) existing monitor wells shall be sampled every March, June, September, and
December for the following parameters:
NO3 (10.0) TDS (500.0)
TOC pH ( 6.5-8.5 standard units)
Ammonia Nitrogen Chloride (250.0)
Water Level Fecal Coliforms (1/100 ml)
Total Suspended Solids Phenol by EPA Method 604
Volatile Organic Compounds - 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 retraining
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 expressed as mg/1.
If TOC concentrations greater than 10 mg/1 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
E!

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
April, July, October, and January.
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 subsurface disposal field, 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 RE IEW 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.
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 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.
W

V1. 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 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. Prior to any transfer of this land, a notice shall be given to the new owner that gives full
details of the materials applied or incorporated at this site.
5. 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).
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 Environmental Management in
accordance with North Carolina General Statute 143-215.6.
7. The wastewater treatment facility shall connect to a publicly owned areawide sewage
collection system within 180 days of its availability. All discharge of wastewater to the
system shall cease at the time of the connection to the sewerage collection system.
9. 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.
10. 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.
11. Water from the deep well located at the treatment facility shall be used for maintenance
purposes and equipment washdown and shall not be used as a potable water supply.
Permit issued this the 29th day of August, 1991
O TH CAROLINA E
George T. Everet , Direct
Division of Envir ental
By Authority of the
Permit Number WQ0000911
AL MANAGEMENT COMMISSION
Management Commission
G

'
i
I
Goat lsIancd,,_.
'
Ti-
al Flats
Shell
`Rocksf.
S }L
T t
41
r iI �1
ri
t
i
Pine
Shoe Note
Say
- f
:Y
:i 4g q v '-( f4 V
f hl7-r.
-Z.
�
�fY F' �•S��y}y � f� �A.
Try T J',• I 3Lk � 13
y'+. �¢
n1
�4
J'
Tidal Flat
�xas
`q
7s�;
' \fir � 4r� i.'�j at'Y`•,w�$. '._
i i
\

RATING SCALE= FOR CLASSIFICATION OF FACILITIES
Name of Plant: 141/0
Owner or Contact Person:
✓y
Mailing Address: �-� g50-_
----
------------- 6, �_ 2273-1--- --
County: �rr� %tcK Telephone,
NPDES Permit No. NC00 Nondisc. Per. No. �� 01V
Issue Date: 9 / -'?��z/9� Expiration Date: 731 `��
Existing Facility/ ✓ New Facility
Rated By: 8,4 -✓1 Date:_ �I�3I�lI
Reviewed (Train. & Cert.) Reg. Office`
Reviewed (Train- & Cert.) Central Office
•:*-
G rad e
Clet s5_Z_
ITEM POINTS ITEM POINTS
Industrial Pretreatment Units and/or
Bar Screens ................................ 1
Industrial Prelreatment Program
or
(see -definition No. 33)
4
t2) FLOWOF PLANT IN GPD
Cemminuling Devices .. 2
(not applicable to non -contaminated cooling
Grit Removal .... - t
waters, sludge handling facilities for water
or
purification plants, totally closed cycle
Mechanical or Aerated Grit Removat ........... 2
systems (def. No. 11), and facilities
Flow Measuring Device.. 1
consisting only of Item (4) (d) or Items (4) (d)
or
and (11) (d))
instrumenled Flow Measurement ............ . 2
0 20,000 ..........................
1
20,001 50.000 ..........................
influent Flow Equalization ....... 2
50,001 100,000 ..........................
3
100,001 250,000 ..........................
4
2S0,001 •• 500,000 ..........................
5
500,001 •-1,000,000 . . ........................
8
1,000,001 -• 2,000,000 ......__-_1 ......1
10
2,000,001 (and up) - rale f point additional for each
200,040 gpd capacity up to a
20
maximum of 30
Diffused Air System ...........
Design Flow (gpd)
PRELIMINARY UNITS (see definition no. 32)
(a)
Bar Screens ................................ 1
(a)
or
(t)
Mechanical Screens, Static Screens or
Imhof! Tank ..................................
Cemminuling Devices .. 2
(c)
Grit Removal .... - t
5
or
(d)
Mechanical or Aerated Grit Removat ........... 2
(e)
Flow Measuring Device.. 1
or
(f)
instrumenled Flow Measurement ............ . 2
(g)
Preaeration .. ........ _ . 2
n)
influent Flow Equalization ....... 2
(i)
Grease or C3ii Separators - Gravity . 2
Mechanical .... 3
2
Dissolved Air Flotation. 8
(t)
Ptechlorinaiion . - . . . _ _ - . . . . . . - 5
(4) PRIMARY TReATMENT UNITS
(a)
Septic Tank (see definition no. 43) ..............
(b)
Imhof! Tank ..................................
5
(c)
Primary Clarifiers ............................
5
(d)
Settling Ponds or Settling Tanks for inorganic
Non-toxic Materials (sludge handling lacili(les
for water purification plants, sand, gravel,
stone, and other mining operations except
recreational activities such as gem or gold
mining) ......................................
2
(5) SECONDARY TREATMENT UNITS
(a)
Carbonaceous Stage
(i)Aeralion - High Purity Oxygen System .... ,
20
Diffused Air System ...........
10
Mechanical Air System (fixed,
floating or rotor) ..............
8
Separate Sludge Reaeration .... -
3
(ii) Trickling Filler
High Bate ...................
7
Standard Rale ...............
5
Packed Tower ...............
5
(iii) Biological Aerated Filler or Aerated
Biological Filler ......................
10
(iv) Aerated Lagoons .................... . .
10
(v) Rotating Biological Conlaclors ..........
10
(vi) Sand Filters -
intermittent biological
2
recirculating biological . . . . .
3
(vii) Stabilization Lagoons ........... . .
S
(viii)Clatiker _ ....
5
(ix) Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrification
(see dei. 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
removal............ .....
5
(xi) Biological Culture ('Super Bugs-) addition
to enhance organic compound removal .....
5

Uilrogenous Stage
i) Aeration - High Purity Oxygen System .....
20
(i) Sludge Holding Tank - Aerated ................
5
Diffused Air System - - - - - - - - - - -
10
Non-aerated .......... -
2
Mechanical Air System (fixed,
{j) Sludge Incinerator - (not including activated
floating, or rotor) ...... ......
8
carbon regeneration) .. - ..
to
Separate Sludge Reaeration .....
3
(k) Vacuum Filter, Centrifuge or Filter Press or other
ii) Trickling Filter -
similar dewatering devices ....................
10
High Rate ..............
7
Standard Hate . - - - - - - - - - - -
5
(8) SLUDGE DISPOSAL (including incinerated ash)
Packed Tower............
5
(a) Lagoons........ ..................
2
iii) Biological Aerated Fitter or Aerated
(b) Land Application (surface and subsurface)
Biological Filler .........................
10
(see definition 22a)
iv) Rotating Biological Contactors ............
10
-where the facility holds the land app. permit . . .
10
V) Sand Filler-
-by contracting to a land application operator who
intermittent biological .... ....
2
holds the land application permit ................
2
recirculating biological .... . ...
3
-land application of sludge by a contractor who does
vi) Clarifier................................
5
not hold the permit for the wastewater treatment
facility where the sludge is generated .........
10
ARY OR ADVANCED TREATMENT UNIT
(c) Landfilled (burial) .............................
5
clivated Carbons Beds -
(9) DISINFECTION
without carbon regeneration - _ - - - - - - - - - - - - - -
5
(a) Chlorination ..............................
5
with carbon regeneration ....................
15
(b) Dechlorination ........................
5
owdered or Granular -Activated Carbon Feed -
(c) Ozone ..............................
5
without carbon regeneration .................
5
(d) Radiation ..........................
5
with carbon regeneration ...................
15
(10) CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
Air Stripping .............................
5
(not applicable to chemical additions rated as item
Denitrification Process (separate process) . ... .
10
(3) 01, (5) (a) (xi), (6) (a), (6) (b), (7) (b), (7) (e),
Electrodialysis .......................
5
(9) (a), (9) (b), or (9) (c) 5 points. each: List:
Foam Separation .............................
5
. . .
5
Ion Exchange................................
5
5
Land Application of Treated Effluent5
(see definition no. 22b) (not applicable for
. . . . .
5
sand, gravel, stone and other similar mining
(11) MISCELLANEOUS UNITS
operations)
(a) Hotting Ponds, Holding Tanks or Settling Ponds
on agriculturally managed sites (See def.
for Organic or Toxic Materials including wastes
.(i)
No. 4) ------------ - - - - -- - - - - - - - - - - - - - - - - -
10
from mining operations containing nitrogen and/or
(ii) by high rate infiltration on non-agriculturally
phosphorous compounds in amounts significantly
managed sites (includes rotary distributors
greater than is common for domestic wastewater ----------
4
and similar fixed nozzle systems) . - - - - - - - - - -
4
(b) Effluent Flow Equalization (not applicable to storage
(iii) by subsurface disposal (includes low pressure
basins which are inherent in land application systems).
2
pipe systems and gravity systems except at
(c) Stage Discharge (not applicable to storage basins
plants consisting of septic tank and nitrifica-
inherent in land application systems .......................................
5
tionlines only) .................. .• .........
(d) Pumps .......... ...................................................
Microscreens..................................
5
(e) Stand-By Power Supply.................................
Phosphorus Removal by Biological Processes
(f) Thermal Pollution Control Device.............................................
3
,See def. No. 26).............................
20
Polishing Ponds - without aeration .......
2
with aeration ..........
5
Dost Aeration - cascade - - - - - - - - - - -
diffused or mechanical ...
0
5
,
TOTAL POINTS /f
Reverse Osmosis_-----.----_----------_---
5
Sand or Mixed-Media Filters - low rate ...........
2
high rate ..........
5
CLASSIFICATION
treatment processes for removal of metal or
:yanide....................................
15
Class I........................................................... 5 - 25 Points
treatment processes for removal of toxic
Class ll------- ......... ....................................... 26- 50 Points
materials other than metal or cyanide .. _ ......
15
Class III....................................................... 51- 65 Points
Class IV........................................................ 66- Up Points
GE TREATMENT
Facilities having a rating of one through four points, inclusive,
;lodge Digestion Tank - Heated ....... . .......
10
do not require a certified operalor. Classification of all other
Aerobic ...............
5
facilities requires a comparable grade operator in responsible
Unhealed ...... ...... .
3
charge.
;lodge Stabilization (chemical or thermal) . . .
5
,lodge Drying Beds - Gravity
9 Y 4 y...----...
2
Facilities having an activated sludge process will be assigned
Vacuum Assislad .......
5
a minimum classification of Class If.
ludge Eluirialion ............... ... . . ........
5
lodge Conditioner (chemical or thermal) . . . .
5
Facilities having treatment processes for the removal of metal
fudge Thickener (gravity) .....
5
or cyanide will be assigned a minimum classification of Class if.
,issolved Air Flotation Unit
iol applicable to a unit rates as (3) (i) ... .. ... .
8
Facilities having treatment processes for the biological removal
fudge Gas Utilization (including gas storage)
2
of phosphorus wil3 be assigned a minimum classification of Class-
HI.

F. F IN MQ N
)AeI; aI.d Carbon Rod,. A phys;e3tCh.m1c11 method for educing anl,bl• argan;c mxl•rixl from
a aewai•r .vlaenl: In. ceh,mn.rypa bed, used :n IN, m.thod wit hay. a itaw fa I. varying from Iwo
.;ght ,,o. par ,moat, p•, aqua,. 1POl end may t .i,Mr upnew a( dawnlbw carbon bad+. Ca,bon
,y or may not b. 119.n•11l.d an was. wail• Mu toayn. d plan[ sir.,
)A.(1I'e 1, s.9 Door. A barn in whkh all abed, are intain.d in a,,p•n,io, and by wh:ch bioloq;cal
:Jell, �an.c n,a Sl.rr is rud4C utl 0_"n ar 4;66 ply lte.l.l al•d [,anal., of o.yg•n on a Ilaw.
ra4ti
;A.( dote, of bringing aboul ;nhmtt. contact a.lw.an air or high purity arrgon ,n a Lquid
'Pro d4hation-_
(A97cuhara11 mansgod site, Any site On which a crap Is produced, managed, and ha,veslnd (Crop
:h.d.a qra s. Ufa;... frees, .1q:
IA;f Suippwp.A poxes by which Ill. ammonium San is last convened to d'.slotv.d amrmania ;pH
jusiment) w;Ih the ammania than r.1•ased to the luvasph•re by PhySiCal meas- or olhar similar
xesser which n,novo potroldiven prod, is such as bonlans, lok+.ne, sod aTlono-
lCarbon Rper41a6on. Th• r,og.neration of sshxuthC carbon by the use of a kafMCO Io peavide
u.m.ty high tempera Wre% which vo[atXae and oS;eclo the absorbed impurities:
ICaibonac.aus Stage. A sage of wasl.w:ur tr41lm4m designed to sch;av, 'tocondary- o[Iluoni
,;13.
ICanw;luga. A ma,ctunical davica in which ca40ugal torte is used to separate solids pont hgvids
dyer to top val. kUlids al W.f.n{ dowil:e r,
Ch.nfeal Addition Systamt - The addilioe, of chemical (s) b Wastewater as An application point for
,posts of emprdviny sands eemoeak pH adiuslen.nt. alkiEnity control, sac.; the npabif;ly Io
pee;mont with 611 r nit choni,eals sed d,fl.rens appl ion po;nls sea aeNave x Specific ,adds will ba
nsid.rod on SYale-. the capabiGsr to add the inlet a[ IS) le dual units w;[[ be fated as on. syssom-
bsbdily %a add a ehemkal al ditf•idam. sppreation points fu differ" pulp.,., w;d ,.tufa in In.
,Ie ma being sale as A.psral. sysl•m,
I)Ch.mkal Sludge Cand1fkw 1p. The ad6tian or a ch•rical compound such at Fm., tank chlor;ds, or
aolym•e lo wol skadge to coalesce IM MASS prior to its app6eatim to a d.waleiing davica:
)Clns.d Cyd. Systems. Use of holdmq ponds of hOW—q tanks ref containment of wact.waa.r
pairing s,wrgaeve, awn -tank naatoriats from sand, gfavok UVsh•d time or olhsr sim7ar opa(tllons,
M which share is no dnseharg. 1e she swfacr wal•fe: such sytl•ms shay easy a maximum of two
nu r.gxrdless of punsp-,sag lacilkias or any *;hat appvn.nardcas-
')Corrabined Removal at Carbonaceous HOD all Katagenous Rtmoval by NiLf'&1tiois - A single slags.
lam -designed' to schitve 'Advanced- perm'd .fay. -I "Is an BOD and srtamaniA niwagan within
sin. b;.kV cal io2cs (.
)De-ehkAnafiom The pafUal or eomphl. ra(!.U<:6On a residual eh[aia. in a Yquid by tray ehomk.l
phrsicsr process:
JDanitrirKalian Process- The eonv•rsian of ritAle-n;trlgen to siltog4n gas-
)El.euedialysle, PIFOCOSS Ear r.movenq soloed .ahs (ram wife( siwowgh she USo of ion-sa(euive
. achanpe membranes;
)Filler Presr, A process operated mecharkial lar parGaty dawal.Anq shdgt-
}Foxm Sep3rx6on, Th. planraad Erothinq of wa,lewaser or wa,lewatef aI Went as a moans of
wve excessive amounts of detergent mal•ants Vuough the insraductfon of air In aha form of line
,bid .: also salad foam rracfionatson-
)Crit Hemoval. The prxesa of romalving g,ii and other haxvy usim(sl miller From wa-tawalbr-
)ImtwQ Tank_ A deep h•o story waslewas•( lark con'411-10 at an upper to&ea4nicon chsmbor and
,.or sludge dges6an chamber,
)Ins' 1 Flow 1.(easw.menL A device which indcatea sidWor records sale at Dour
)i°, . A chemical praeasx in which ;ons from tutu drff.rent Sool•cults are eachasagod;
)LA alert (a) SWJ?dA OsaposaL A final sltsdg. di" --t method by which aludge may b.
,ped s. i.ther by Spearing ort she audxc* or by tvbsurlxe. lijensorl {tit_ chisel ptow1: Inol
'arable (or ITP" or xtudye deserbad in III) of this Rut.); (b)Traat.d E,,,.,.L The proeas o1
Smog 4141100 w3slaw2t4r onto A land area ar other methods of application of wa atawalor onto a
S area S- a means of foal disposal sndror Ir. anon=^
)ld;cfasuesn, A low speed, eonlnuowfr b3e1-waSh4d, totaling drum fills( epauting under
vhY con6 dads al a polishing method a.mav;ng su,p.nded Solids fiana 41Dllenl-
)H;t;Ikxl:on Pnxert. The bioChem;dal convsrslon or unoxida.d nitrog.n tammanil and organic
egsn) 10 ax;diled tiVcgan (usually Nlrale):
)Niu O9enaus Stag.. A sapatal. stago of waste 31- ueatmenl dost"d lot the ipacilk purpose or
x•rtifig xrnmanil nitrogen so nitrate ntuogen•
)Phosphate R. moral EiologieaL The removal of pSasphorw Irom wasl•walac by an dxicra no,;c
=ass da;gnad to eMane. luxury uptake at phosphwvs by the rrtiaoorgv,l4ms-
Wg6tNng POM. A holdlrlg pond so11ow6g secondary uaalmnt +rich tufrkienl d.1 ­ 60A Io allow fix
sallrAq .f Fr.tr w.pismad soLds;
iPast Atra;o Alfa Yon following convenlion.t ucordary taalmtnl units 10 nc,nw .fi int D.O.
Of any other pwpos.:
Poll Aarauoa (Cascade) h pofichinq method by which dr.solved osypen is addod to the o(Ruani by
onmaehankil, gravity moans of flow'" dawn a Series of steps or wears- the naw ac using acr.SS
drops or weint naovez in A la;r[r thin payor and the aparallon e! N• cattalo regv;r•c na oP•r,iw
.stmonl: shut, s... points are assigned even though u,is It an ase radar Slop to marling Iho 6m;t1 of
d;tchatp. pe,m;k
Powd.nd or G ­ tar Act;val.d Carbon Fore. A bioylys;c al tuba. proc.S that ut;gz.. b;ofogkal
ally and olVaik absorption by wing P. e --d o+ q,anufsr ]clivatod ' carbon- V: -gin andnor
fa
nelad carbon it feed dOnl,allad klo in, ,r,t,m; -
Pr•xefSt;an. A lark canslru %d to provide atrat'_ prior Ib prima,y eaalmanl:
P r•iimnary Uruls. Ural Operations ;n Ill. 11•alr,. 1;j ac, ss, such as 1cr n;nq and commination,
W rear• the rl,.1 Ion tubs.gvent mli.e Aper,$._;
lnd"Ll:11 Pr,u.lam.nr (a)Pr•-la.xlmont Unit, Indv,bul Th. condi6on;ng of a wave it a
Ice b.lar• dischug., to t. move or to n.uhal;f, IUJ,fa—e [.ju,ious so an
owes d 1e 1l nl
t s,•1 or Io .11,11 a penial ,•duction n fwd on a t.,tm. int Prot. which it `op..i.d by Ino Sam•
. ning body at n, -1-1- w 1l I_,; plan) befog r.1.4: (b)p­tealmonl Psagram Indv,l6al
FTa Sus. m EPA I.quirod program w i,x•n, poi,on lh,__I;,q ah..r -
aq Cla,;ri.n. The Gut ,eutinq tank, Ih,.ugh which wallow ver Is pa a.d in a voalm.nl
.Ss lo, Ill. purge s, of removing s•1d.abl. and ,v+p,nd.d colds aid BOD a.hich ;s aaaxial.d w;lh iM1.
s:
Pump'. AN inl::a ns o11luanl and in -plant Pura?+;
Radiation. Dis;nlrclion a.ndror %tHa;a•li.n Procoa, u0b:ling dwk.s •milling ulu+viow o, gamma
Revel,, Oa moll i, A l4 imenl Protect in w-'1101 a h.a*y eontiminalsd I;quid i/prt..,•,•aed
rgh a m. mhran. forming n.xrty pun liquid I_ I_ lvap•rd.d 1oGtls
Rola hr icil Conlacwis. A filed b;Oogh,l 91011h protest an which w,pl.w,lo, III—
.Dh 1. :h a 4•f;ei of Pa,;ally a*bm.,g•d :-Iii ,vital o, a a fekat.0-
Sand ,nh,toil le nl Siofog;cal. Fin. ion of .in ... ,
ronowinra Pi
c
nl pa•i^ whim Ianh•bieeompb;l;nn n .ped , pod ­ 4 -t n•oa
11 vlc loading r
r , .n rhes. (;It"' ...cm?a.,.d In VPd/ac end har. a r svhinq law
•'II(I... than one): (billet. via Gnq b;afaprCmM1
al . the la. iyp. of rand „ d.fin.d ;n (a) w;,n
dd.d tsps b:G,7 la ,.cycle , e111uon1 bark shravFh lh. Sand rdaa r'
F;h.ra. A p.C,h;nq p,o-ce„ by .+h:Cn •uw. n, a.ma, a,. aahi.v.d ,hro..gh a
•n t•eucl;an a! ,v+p.nd•d ,o};ds:(a}law ,+t. - q, aw ily- hydc..6l 11y lord.d [ill., xi,h lading
'n Ih• In. lb ,hr.• gpMrl .ang.:ID)h;g )• ,.,. . p,.,, hyd,auacayy ioad.d III— IM 1s. 4d q
in In. Irv. qy w,1 nein,.. A, any oat.. II,. lo,d.rg r,,. —ill .aced third qfm l:
(4;)Sscond+ry CWN;oor, A 11nk -which fallow, the b;,kgic+l and of A tree Ment plant and which hal
the Pu,pa,e If f.mov;ng ,fridge asatciel.d with the biol"kil v.a,m•ne u,a
(f 2)S•p ora . Su.dpe R. aero lion- A F.11 of the w.cacs , taWtulon p,ot. whore rhe auwtoed ,,,cryo
s lran,[.n.e ss. a lank ."' a.nl.d i.lol. .Mor rJng 1, la , • barn:
T
(aa)Septic arr A r-*.,:...tory t.usn7 lank to +.I+ich +alri d +k,dq. Is ;n contact w,irh Iho w, s ..
Ilaa.1ng Iruauph Ino lana; .hall gar be aPP6 able for a.p,;. lank a",._. . vinp •I+n,ily
.,;6enc11 ha ing i c]p,liiy el 20V7 9a60n- of Is., which 6110-190 to a ,a:trirc atiw, 1;•Sd;
(41151*dg• Oip.alion- 71.e pix•„ be which orgarvc ar and 16,69. is gaK-d- Igv.lia d,
mincnfia.d or conv4lla4 info me o aublo organk matt., through Iho activity of li„inq o,glnuma,
wNch ir,clvd•s ae,al.d lauding 11MI;
te6)5audge Dq;ng Beds. An arae sorxpdaing natural .r artif Sal 417441 al Palau% mater;all upon "Ch
digasl.d sewag. scudoio is dr;.d br diainlga and •vlpotalion:
t(6)53udga EmAxi;an. A prccoss of dodge cenditioeing ;h which certain cenitituonts are dorn"ad by
.P1Caaai*a waah,rlp, with hash water or plane alfluanl:
(47)Slu49. Gax U614aiie.-. Th. process of using sewtgo gas for the purpose of hating bu;Liirgt,
driArs9 engine S- ale.:
(cs)S1udg. Herding lank (A.talod crd Nona uxted)- A lank wiW1.4 lei small wasNwal.r tro almonl
plants not eont]Ining a czars In wakh .1"0. may bar 1.n1 Iced,_ and auparnataN wahu,a«n 1.;— Is.
A. eeylig meshed (i,•, at,dras drying tr,dt);•TN; may be done by adding a small amovea of air ,imply to
keep she skldge Ire,k w; not noctsserir an amount that would be lagvaed la achieve rlabtiaal;on of
organic .-Nor. A flofea ers:od Isrk wasdd atimpty be wood to docanl Wdg. plsor to dewatering and wo.ld
'Imply be used to docam sludge p6itr so d.wat.rinq •rad would rant allow pang pal;odt (stv.ral days of
d.lena;on) without resuir.nq Odar probwms;
(49)Studge Nciadrmors, A hrinaco deigned to burn sltrdg. and to remove at rn,34 . and combed".
m1146211 and valets Ran SUdg4 Ie a stars. Ash;
(SD)Shsdge Sitbiika60n (CnemicaE w Thermat). A peoe.ss to make treated sludg. less *dales and
ptruascribte, and to reduce the padtogenk orgarlisrrt c.nt.nl: This may bo don. by pH adjustment
chlorine doing, or by hes[ utwnenl:
(SI)S61dgt Thkk•nor- A type of ss:cnenaatsen tank In which the sludge Is permitted so %alit• and
thtclt.. elv.ugh agitation and gn,rhy: _
(S2JS1xb,Tica11ion Lagoara. A type at er;dslion hpoon h wbkJ, W.lagkal naid.iwn el ugank maear is
trlecled by Ni,+ral trinll.r of asTgte to She avatar Aram iF ("I a poiltirq pond):
(S3)Slaad-Ey Power Supp:y, On sit. or parlabl. electrical ganaeaYrg equipment;
(S1) Static Screens, A stationary scr4en�desepntd b itmov. solids including raort-biodegradable
paralculne (loatabt4 saUds, suspended solids and HOD r.duc6on) from municipal and indwslriai
wastewater treatment systems:
(SS)Tsthaty Treatmanti A slag. of Iraalm.nt InGowing setaitdaly which is primarily far, the purpose
Of Musnt poishiIV-. A sst:2N lagoon or sand or coil ldu might big employed for tins purpose.
(5iJTb4mW Porut;on Con:at Dtvka. A device f rovi6vig for the transfer of h.at from a livid ltowinq
6 tubas to xnoiher Acid DU!4ide the Ilabes, Of rice vefsaG or, oth4r mems of 1e91A16rag
liquid lomp.(1bK.s:
(52)Th.tmat Sltadge Caradetionae. A atcndili-ing pfoceSx by which heat Is added for a prutsacted period
os time b Lraprova she dewat.rabiiSy el shady. by Ill. soivbr til and hydrxvtiiiny of the %maD.r and
mare hIgWT hydrated stud,,. p.,k3ar;
(Ssj"ic w sgthts. Thos• avass.s or corobtnat;or s of ,cissa, kKfwkt9 d;sexs.-causing agents which
altar dsehslg• and upon aaposuro, ingellierti inhalation es xseiaulxlion into any a 92eism o4hoi
d:•ct[r prom Iho environment er ind•ecdy by IngelSen grwgh load chases, war cause death, disease.
behaviaeat oblaorma6».s, terse er, gena tie mularons, phTssosoyka( mallvne ions (a xkKf;ag ma6unetians
in reproduclian) or physical dslorr.Salions. In such urganesms ee their oflspfkV. Tonic naatersafs
indvde, by way illvstfal;on and mel Gnwlalion-. said, cadr.irvcry clu.msum- mercury, vanadium.
aesirk. six, wtho-n4uo-cNortbontan4 (ONCE polrehkadinal.d b-,ph.cayrr (PCBs) and d-at.hSosed+phsn7i
1riWorwth et. (DDT): and any other materials that have tw may Minaret, be del.eminad to have logic
prop.ni.s;
(59)Trickring Ater. A b61a5icat IratmeM unit conal 6419 14 matelot such as broken stens as lock
aver wNch wulowaw is disiribultd; Ahigh rate tickling filer 1. on. which is aptrat.3'u�b.:.v.en
10 and 30 mgel per acre. A low rale uicklnq IUW is one Much is da%ipned so OPalate at on•'Ic lour
nVd p.s stir-,
[60)TAC1,149 Fitter (Packod Tower), A plug flow typo at operation in which wasrewaler flow, down
thawilh successlvo layers of media cr filum• mxtarixf: 0191fk malarial is removad conlinuap:y by
active bidogical faad V(Owlh in both sxc•ssive lar*,- Thi, method may pladuc. -sacaM IT-c',,st,ly
elavora, or may W adaplod to product a nivifted erlluent
(GIJVacuvm Mot,. C.nlr;Ivgn, or FBI., P(osssa- Oev;ea which au de.egned I. ,•tows of as
woes from .kh" d;9..fd r w und;g.lted ssudg. prior b &-polar at fvrlbtr trasme L