WQ0002165_Final Permit_19910906

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. Steven Wrenn, Superintendent
Halifax County Schools
Post Office Box 468
Halifax, North Carolina 27839
Dear Mr. Wrenn:
George T. Everett,Ph.D.
Director
September 6, 1991
Subject- Permit No. WQ0002165
Halifax County Schools
Hollister Elementary School
Subsurface Disposal System
Halifax County
In accordance with your application received May 9, 1991, we are forwarding herewith
Permit No. WQ0002165, dated September 6, 1991, to Halifax County Schools for the operation
of a 4,200 GPD low pressure pipe subsurface wastewater disposal system.
This permit shall be effective from the date of issuance until August 31, 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. WQ0002165 issued February 13, 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.
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.
S lacerely,
George T. Eve ett
cc, Halifax County Health Department
Raleigh Regional Office
Groundwater Section
Training and Certification Unit
Facilities Assessment Unit
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
Halifax County Schools
Halifax County
FOR THE
continued operation of a 4,200 GPD subsurface wastewater disposal system consisting of a septic
tank, a 3,600 gallon pump tank made up of three 1,200 gallon tanks, dual 107 GPM pumps with
high water alarms, approximately 690 linear feet of 3 -inch force main, approximately 2,800 linear
feet of 1-1/4 inch diameter distribution piping, approximately 14,000 square feet of low pressure
pipe nitrification field, and all associated piping and appurtenances to serve Hollister Elementary
School with no discharge of wastes to the surface waters, pursuant to the application received
May 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 August 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.

III
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.
OPERATION AND MAINTENANCE REOIJIREMENTS
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 waster 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 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.
4. No traffic or equipment shall be allowed on the disposal area except while
installation occurs or while normal maintenance is being performed.
5. 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.
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 Iaterals 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 limited to the
following;
Items
a) Individual dosing pump operation
b) Individual field rotation
c) High water alarms
d) Residual pressure on highest and
lowest lateral on each subfield
2
Inspection Fregt1e11c1
Monthly
Monthly
Monthly
Annually

If Groundwater sampling indicates or predicts problems with the compliance with
Groundwater Standards, this permit will be modified to include additional and/or
more restrictive limitations.
3. Three copies of all operation and maintenance records (as specified in condition III
2) 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. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh Regional Office, telephone
no. 919/ 733-2314, 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 rank; 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 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. GROUNDWATER REQ[JIREMENTS
The discontinued water supply well located on the property sh',01 be properly
abandoned in accordance with 15A NCAC 2C.01 13.
2. Any groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
3

3. The Compliance Boundary 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)x. 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 before December 30, 1983, the Compliance Boundary is
established at a distance 500 feet from the waste disposal area, or the property
boundary, whichever is less.
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 lel
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.
V. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Penilittee
to insure proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and dispostsl
facilities to prevent malfunctions and deterioration, operator errors and discharges
which may cause or Iead 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.
Cl

V1. GENERAL CONDITIONS
1. This pem-dt 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. A set of approved pians and specifications for the subject project must be retained
by the applicant for the life of the project.
6. 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).
7. Failure to abide by the conditions and limitations contained in this permit nzay
subject the Permittee to an enforcement action by the Division of Environmental
Management in accordance with North Carolina General Statute 143-215.6.
8. The subject wastewater treatment and disposal facilities shall be connected to ail
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 terns 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.
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 pentyl
for such period of time and under such conditions and limitations as it may deem
appropriate.
5

11. Issuance of this pemnit hereby voids Permit No. WQ0002165 issued February 13,
1990.
Permit issued this the 6th day of September, 1991
RTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
George T. Ever , Director '
Division of Envi mental nage ent
By Authority of the viron enc anagernent Commission
L

r
RATING SCALE FOR CLASSIFICATION OF FACILITIES
Name of Plant: r 5C4001
Owner or Contact Person: nt. 5411,
Mailing Address -._P. ___I�A( C,-2-ZU-7
County: 4/,`
NPDES Permit No. NCOO
Telephone:
Nondisc. Per. No., we Gc�_z1 C5 -
IssueDate: _ 5�, ;, /9R/ Expiration Date: i
Existing Facility I/ _ - New Facility
Rated By: TT Date: oyIZ914/
Reviewed (Train- & Cert.) Reg. Office_
Reviewed (Train. & Cert.) Central Office
ORC
ITEM
Grade
POINTS ITEM
(1) Industrial Pretreatment Units and/or
Bar Screens ................................ i
Industrial Pretreatment Program
r
(see -definition No. 33)
4
(2) QF -SU FLOW OF PLANT IN GPD
Comminuting Devices ........... ............. 2
(not applicable to non -contaminated cooling
Grit Removal ............................... i
waters, sludge handling facilities for water
or
purification plants, totally closed cycle
Mechanical or Aerated Grit Removal ........... 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))
Instrumented Flow Measurement .............. 2
0 20,000....... ...................
Preaeralion................................ 2
20,001 50,000 ..........................
2
50,001 100,000 ..........................
3
100,001 -- 250,000 ..........................
4
250,001 500,000..... .....................
5
500,001 --1,000,000 ..........................
8
1,000,001 -- 2,000,000 .........................
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 ................................ i
r
(b)
Mechanical Screens, Slaiic Screens or
Comminuting Devices ........... ............. 2
(c)
Grit Removal ............................... i
or
(d)
Mechanical or Aerated Grit Removal ........... 2
(e)
Flow Measuring Device ....................... 1
or
(f)
Instrumented Flow Measurement .............. 2
(g)
Preaeralion................................ 2
'h)
Influent Flow Equalization ......... . ......... 2
Grease or Oil Separators . Gravity ..... _ .... 2
Mechanical ....... _ .. 3
Dissolved Air Flotation- 8
(i)
Prechlofination .... . .............. I .......... 5
POINT
(4) PRIMARYTREATMENT UNITS
(a) Septic Tank (see definition no. 43) ..............
(b) Imhoff Tank ..................................
(c) Primary Clarifiers ............................
(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
mining) ......................................
(5) SECONDARY TREATMENT UNITS
(a) Carbonaceous Stage
(i)Aeration - High Purity Oxygen System
Diffused Air System ...........
Mechanical Air System (fixed,
floating or rotor) ..............
Separate Sludge Reaeration .... .
(ii) Trickling Filter
High Rale ...................
Standard Rate ...............
Packed Tower ...............
(iii) Biological Aerated Filler or Aerated
Biological Filter ......................
(iv) Aerated lagoons ..................... .
(v) Rotating Biological Contactors ..........
(vi) Sand Filters -
intermittent biological .. . . .
recirculating biological . . .
(vii) Stabilization Lagoons .................. .
(viii)Clarifier .................. . . ......... .
(ix) Single stage system for combined
carbonaceous removal of BOD and
nitrogenous removal by nitrification
(see del. No. 12) (Points for this ilem
have to be in addition to items (5) (a)
(i) through (5) (a) (viii) . . .............. .
(x) Nutrient additions to enhance BOD
removal .................... ..........
(xi) Biological Culture (-Super Bugs`) addition
to enhance organic compound removal ... . .

Nitrogenous Stage
(i) Aeration - high Purity Oxygen Syslem - - - -
Dillused Air System .......... .
Mechanical Air System (fixed,
floating, or rotor) .... - - - - - - - -
Separate Sludge Reaeralion .... -
(ii) Trickling Filler -
High Rate ............. .
Standard Rale ...... ...
Packed Tower............
(iii) Biological Aerated Filter or Aerated
Biological Filter -- - - - - - ----- - - • - - • . - - .. .
(iv) Rotating Bioiogicat Contactors ....... .... .
(v) Sand Filter -
intermittent biological ... .... .
recirculating biological - . ... .. .
(vi) Clarifier ................................
FIARY OR ADVANCED TREATMENT UNIT
Activated Carbons Beds -
without carbon regeneration ................. .
with carbon regeneration ................... .
Powdered or Granular Activated Carbon Feed -
without carbon regeneration ... . .......... . . .
with carbon regeneration ... . ............ . . .
Air Stripping ............................ .
Denitrification Process (separate process) - . - - .
Electrodialysis ..............................
Foam Separation ................... . .........
Ion Exchange ................................
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)................. ..................
(ii) by high rate infiltration on non -agriculturally
managed sites (includes rotary distributors
and similar fixed nozzle systems) ...........
(iii) by subsurface disposal (includes low pressur
pipe systems and gravity systems except at
plants consisting of septic lank and nitrifica-
tion lines only) ...................... . . . . . . .
Microscreens..................................
Phosphorus Removal by Biological Processes
(See def. No. 26) .............................
Polishing Ponds - without aeration ...... .
with aeration ..........
Post Aeration - cascade ..............
diffused or mechanical . . .
Reverse Osmosis ...............................
Sand or Mixed -Media Filters - low rate .......... .
high rate ..........
Treatment processes for removal of metal or
cyanide..... ................................. '
Treatment processes for removal of toxic
materials other than metal or cyanide .......
JDGE TREATMENT
Sludge Digestion Tank - Healed ....... .......
Aerobic ....... .... . . .
Unhealed ...... .......
Sludge Stabilization (chemical or thermal) .
Sludge Drying Beds - Gravity.... ... .
Vacuum Assisted . ..... .
Sludge Efulrialion ...... ........
Sludge Conditioner (chemical or thermal) .. ... . .
Sludge Thickener (gravity) ....................
Dissolved Air Flotation Unit
(not applicable to a unit rales as (3) (i) .
Sludge Gas Utilization (including gas storage)
20
(i) Sludge Holding Tank - Aerated ................
5
10
Non-aerated .. .........
2-
(j) Sludge Incinerator - (not including activated
(j)
8
carbon regeneration) .. - , ,
1 0
3
(k) Vacuum Filter, Centrifuge or Filter Press or other
similar dewalering devices ....................
1 0
7
5
(8)
SLUDGE DISPOSAL (including incinerated ash)
5
(a)Lagoons ............................. ..........
2
(b) Land Application (surface and subsurface)
10
(see definition 22a)
10
-where the facility holds the land app. permit . . .
10
-by contracting to a land application operator who
2
holds the land application permit ................
2
3
-land application of sludge by a contractor who does
5
not hold the permit for the wastewater Irealmenl
facility where the sludge is generated .... - .. ..
10
(c) Landfilled (burial) .... . ........................
5
(9)
DISINFECTION
5
(a) Chlorination ..............................
5
15
(b) Dechlorinalion ........................
5
(c) Ozone ..................•...........
5
5
(d) Radiation ..........................
5
15
(10)
CHEMICAL ADDITION SYSTEM (S) (See definition No. 9)
5
(not applicable to chemical additions rated as item
10
(3) 0), (5) (a) (xi), (6) (a), (6) (b), (7) (b), (7) (e),
5
(9) (a), (9) (b), or (9) (c) 5 points each: List_
5
5
S
5
5
5
(11)
MISCELLANEOUS UNITS
(a) Holding Ponds, Holding Tanks or Settling Ponds
for Organic or Toxic Materials including wastes
10
from mining operations containing nitrogen and/or
phosphorous compounds in amounts significantly
greater than is common for domestic wastewater ----------
4
4
(b) Effluent Flow Equalization (not applicable to storage
e
basins which are inherent in land application systems)-
2
(c) Stage Discharge (not applicable to storage basins
inherent in land application systems .......................................
5
4
(d) Pumps..............................•---......................---............................._.. ........
0
5
(e) Stand -By Power Supply..................................................................
3
(f) Thermal Pollution Control Device .............................................
3
20
2
5
0
5
t-
TOTAL POINTS U
5
2
5
CLASSIFICATION
ICL)
15
...... .................................................... 5 - 25 Points
Class fl__ .................................................... 26- 50 Points
15
Class I) i ............... ....................................... 51- 65 Points
Class IV '................."--"----....................... 66- Up Points
Facilities having a rating of one through four points, inclusive,
10 do not require a certified operator. Classification of all other
5 lacililies requires a comparable grade operator in responsible
3 charge.
5
2 Facilities having an activated sludge process will be assigned
5 a minimum classilication of Class tl.
5
5 Facililies having Irealment processes for the removal of metal
5 or cyanide will be assigned a minimum classificalion of Class II.
a Facilities having tleatmenl processes for the biological removal
2 of phosphorus will be assigned a minimum classilication o) Class -
Ill.
(I)Acliv,I•d Carbon Bads, A physic2vch•m;a31 m•anod lar r.duc;og iolvbl• organic mxtei;at I-
- I
romwarIr ' u,nl: the column-lypa bads ut.d in INA method "I have a flow rale varying from two
10 .;Qt oar m.nul• per aqua • root and may bo .nhar upnow ar downtlow carbon bods. Carbon
may o ae reg.. r,t.d an the wsal.-ral•r Vwvn. rel plan[ .;I..
(2]Aaea, ani. A bilin In which as ..Gd, s inta;n•d ;n svtp. alien and by which bioloq;c al
oaiJ+cion lie o,ganre nu lacer i, rud.+a.d rllrav�h a.il;dllly }cent./a.•d IranLf.r of oayg.n on a Ila-
vvough basis:
{9]A.ntrorti A process d brinq;nq about int; ­L. contact b.h.ean air or h;qh purity o.yg.n in a I;gv;d
by spraying. x9;1-6— d;lfvtion-
(t)Aqricuhwlly managed All.. Any silo an which a Coop is produced, managed, and harvaslod (Crop
inalsd.r gra sae a, Qu;-. frees, •Ic1; '
(5)A;a Stripping, A process by which the ammonium ton is 1111 converlod to d;tsolvad ammonia (pH
adiuslm•n[) with IN. ammonia than released to N. alrrasphera by physical means; or oshar 3irn6l
proc•sics which r.mor• pepolovro prodvds $uch as bonbons, toluene, and 7ylons,
(6)Cifbon Rsgerosabon. The regeneration of nhauclld carbon by the via of a furnace to provide
atramaty high l.mpenwr•s which v.I.Q t. tad osidib, she absorbed impuritiet•
(7)Carbanoc•ous Sfag.. A alago of wars. coat er Irasimenl designed to echiov• 'socoMary' aJfIu I
limill.
(tlJGonvilvg •. A mechanical ddvico ;n which callilugal lalco is usod to s.parale solids from liquids
endrorto :1-P-1, liquids al trflor6nt den,;r;u.
(9)Ch.rnk Addil;an Syalams - 7116 addition of chemical Is) to waslawalor at an nppl;cal;on point for
purposes of improving sold. removal, pH adjuaten.ol, alkalinity camper. .I[.• the capabrrity to
oxpari,nent wish cirreaont chemicals and d11.e6A1 applies Yon po;nls la achieve a Apae;rre Insall will be
c $.dosed an. tyat.na: sae capabgily to add ch.niic.t Is) to dual vnlil wdl be ral.d as ona sysianr
capaba;ly to add A chemical if dAlaranca appr "n point, Iw dAlotent purposes will result in the
sysnms Wing I.I. as s.paraea syalam,
(lo)Ch•nvcal Shd9e Conditioning. The addition al a ch.r.;car compound such at time. Iatric cNorid., or
A Polymer to we[ sludge to coalesce the mass prior le ;h application bo a dewalarirag device•
(19Cbsad Cycle Syslums. Us* of holding ponds or holding tanks fw containment a[ wastewater
coniaitlie,p inaroarc. n 11axic rt+ala rials Porn sand, gravel, crushed .lone or other sir.ITar oparadons,
from which then. is no dscharga to the sumacs water; such systems shat[ carry a maximum or two
points legardl.a. of pumping hciiiilas or any o;h.r ipptrnsnances•
(12)Cornb;n&d He. al of Caebanxc."x 800 and tYveg.novs Removal by NWilueatien - A single stags
system 'designed' to 26iova -xdvanc•d' permit offhatr.1 rvNte on BOD grad ammonia, niv096n within
the same 6iobgicai !.actor.
It1)De.cl.brinafien. The partial or complete reduction o: residual cNw;no in a lquid by any chonpce
of physical process:
114JD61iuira1t6n Procasc, Th* Conversion of NVate-niuog.n to rlihog.n gar
(l5)Elecsrodiay31i. Proton lot 16maving iorilad salts lrbm water through the use of ion-sohc6vc
ion-.aehange memlantias:
(16)FAlor press. A process operated m.ehassicity lot paslially dewatering sludge•
(17)Fo2m S.pansion. Th. pta.nad frothing of wa.l.waler of wlsl•wal.r of lVant at a moans: of
fsmoving vacsssiv amounts or dalsrpenl materiels dvoagh the inlrodvctf n of air in tho form of lin.
laubbfes; also cxAod loam &actionabion-
{ta)Gik Ramona'- The pocass e1 rnmovinq 961 and blher hoary MinofA miller Irom waslaw3sor_-
(19]!m' A drip two glory W21lowaler bank consisting of in upper sa4menl2tion chamboi and
a bre
4.tbean ehambor;
120)11 ' Flow Measurement A de Vict which Jndicaln indoor records late of how;
{2t)bn f., A [hrmicil process in which ions from lwa dilf•r0nt moleculas are .xchang6d-
{22J.ald apprreiiiw (a) Sludge Disposal. A rural AW . disposal method by which sludge may be
applied to land either by spraying on the Avrfac• or bT svbsvrlac. Ini•crlon (L.., ch;sat plow); (real
sppficibi, ler lypes or sludge 44sc4b6d In (11) of shpt Rural; (b)Tn2t•4 Efhuant, The process o1
spaying u.alad a•atlewater u,la a land area w other mobhods of appr.ext;on of wa,[ewalor onto A
land area as a nuam e1 Gaal disposal andeor I Itmonl;
(21]f.{:csetu.eft A low speed, conlvavousty back -washed. totaling drum titles oparaf;ng under
gravity eo.dsions a, s Po4hing method 70movin2 suep.nd.d solids from slff..nl-
I2tjNileilication Process. The biochemical convauie. of unosidiz.d nlsrogen (ammonia and organic
euuo9.n] to oa;d;l.d oitsog.n {usuahy nilral.);
(2S)Niue9snovl Stag., A sepatats 11190 of wssiswater v.simanl d•signad IM Ne specirrc purpose of
convolang asrunoni, oilrog0n to .;tnl• nittogen•
(26]Pha1ph1ts Rersevaf Biologic IL Th. removal 01 ptsosphorus from w2tlaw3l.( by an oxidanoaic
prx.s, dnignad to tM4rf a knory uptake of phosphorus by she, microorganisms:
{27)PogjNh9 POM- A haldn9 pend loaawing secondary Uoilmenl wish svlrkUnt detention 1. allow la, t
lha solt"V of rimy s Pursded solid,; I
I2aJPosl Atf4Dn, Asu$on following cbelvntionll zaccM,ry treatment units to increase elliuent P.O.
at for any other pwpos.:
(29)Pocl Acranii. (Ct9c141] A PoicN.g method by which dhrolved osypon i, added to the afgvonl by
1 nanmechanical. gravilr moans of flowing down x ..ries of slops w w.irs•Th,a flow occurring across
alta slap, or weir. moves in a fawly Rain first and the aF4fxIIDn e1 she cascade regv;ros no opatalw
a diolley"nr: that, tele points ars assigned Even vwugh Nis ca an •nen6hl step to roosting th. limits of
Ih• discharge Perm;C
(7oRowder.d at Granular Activated Carbon Feed, A b;gphysical carbon process Nal v1;476s biological
scl;vity and organic abselption by using pcwd•r.d ar granular actin I.d carbon• V;rgin andfot
1.9e6o 11d carbon is load convolled Into Ne sysham;
pIJP»aorttion, A tank conatrucbed la provide .Askin Prior 10 primary P61tm6nl_
{32JPnhm;rst ry Urdll. Unit operations in the trsalmanl process, such It screening and comminution.
Thal prepare the iquw for ,ubs.gv.nl major opera4ons;
(11)Induruist PrevalmrnP (a)Pr.-u. abment unit, Indvaleial. Th* condhioning of a waste sl its
source bora& discharge, to remove at to n.vualit. ,ubalxr sx Mjwious to sewers and trexam.frl
pweAsea of 7a eIr.cl , penial feduepon in load on a Ireatm.nl Proe..c wh;eh Is nI.d b No ram.
9"—'o"9 body a, t r wars. wa,ar 1r.atm,M Plant Wing .ted- (b)Pra 4r. alm•nl aPragra m, fresco trial -
rrw,s be a SI -1- or EPA l.qu.,.d program le receive p.i la on she -rasing sh..l;
(]a)Ptlmary Ch,n Th• Iesl 11I16nq links through wh;ch wastawalar Is
9 bald in a Ir.a[m nl
works for the Purpoi. al removing s,td.abl. and s p-M.d sills. and DOD which is aSsccial.d with Ihs
solid[:
03)P ­ Pa, Alrinfbrot. eIrlu. ,. and in -plan) pumps'
ay,: cr.
diction- Dis;nl.uion sndsar ale rpitali
, an ptvs uliGaing devices •miring vitravidlol w gamma
=y•
p)}Revere• Osmose. A I,aasm•nl p,oc6n in w4;ch a heavy canUmimled liquid if gra _urs lid
{ a]Aoh at;rm•obnn. [arming nearly par. liquid file Ram ,u p• d.d solids;
cal C. acts.. A Bard biolaglcal growth Proc,rs in which warmwaior Ilo.-s
Shrough =
[79)Ssnd 'h . a;a
or pa rs; su
ally bm.rr•ad c'acular ,vrlacas cera folat.d-
nt.rmin.nlBi9t994al. Fihra tion ar ,M..nj fanow; q naptic lank., lagoons
o1h: ...ret process in wh;ch fvnhar b;nd.compe.;I;an fir ..pasted Io produc. d.air.d
e Illy, rel s; )/ydravY,c Ioaoinq rales on lh•a* l;ll.ls•cac mpvt.d In gpdeand haul a a•aullinq lbw
9Pm'al past than an.]; (b)Roc r Mating biclog;_at .rhe sama lyp• of sand [,list as d.tinnd in (a) rv;lh
M. +odad upib;Lty ro r,cycl. .nluool hack thrar.gh the sand Gem -
(t9)$and A P.9; h;ng pee i by which rflly. rel limits ar.ch;..ad through
fwth.n udvu;on a7 Iwp.nd.d soYd s;(a)"- tai. --9-4. hydraul;caay loxdadafib.r ..;th I.ad;ng
filer in 1h• Ionive Io th+' . opmesl ran9•:Ib)hgh rat• .. a p,.rr hydr 11cilly Iaad.d lilts w;Ih Iwa;nq
qPW, sang•; At any tet•. Ih. 1a cinq nI. will •acid the.• op—fl:
(al)Secandary C114finrr. A lank which follows the b;ologicaf unil at a h•atm•nt plant and which has
Ne PwPa.• of rrmoving sh+69• +ass.cuted With the biotogic.l seabnanf uN -
(dJSepv.I. Slvdq. Au.n tion_ A Fan al lh. tonus. nabi6tation p+ac... hawhoro Iho .nivalad alvdga
n sat na[•tr•d Io a lank and ..rated l..lor. r` .0 njq it Ie the basin;
(t1J5eplic Tank. A ri,q:a ,,ey s•hs..y unkin which a+ld.d sludge fs in wnlacr s:ah thaw ars ter
Ila.eing nvoagh the 13a1,; shall not be appl;rhbl. for ..;X. tank sy,Isma inq fingto ra rel;ly
r.t;d•nc.a having a capacity of 2ovo p,llam or Inn which discharge Io } NlhrK a4M I;.M:
{4415iudpa D•gutio The paeasa by «Neh orgam or volstib -11.f and Oudg. is 9,s;6ed, lkq bad.
m;nof.51sd or converiaa into mrmn
. slabl• o,ganhc ana lhfough the )ctivily of IMml, argan;sms,
which fndad•r a.,sted U44ng tsnkr
(55)SW69• Ory;ng gods. M area comprising nalvrat w 2ififchl layo,s at porous mawi,ls upon which
&;bled sawags A dq. is d,;.d by en:nagt and •vapar it -:
(t6j5h)d9e OvI416on, A ptm. of slvdge cend;l"ng in which una;n conslilvonls are r.movod by
uc[eiiira wa sh;.gs will, fresh -1., or Planl ahlut rel;
(4y)5ludge G-- Uh6xalicc. Th. pac.st a using sawags gas lar the pvrposa of healing bu;ldings,
driving engines, etc.;
(ca)Sludg. Heldrnq bank (Amsted cr.d Non}stilad). A link vt;liaad lar small wanawator stoa[mont
pssnti not conla"ng a e;gaslol rn s -r> % .wo, may u- kupt [cash• and Iv(A, .rant willulr:.wn pr;.r to
x d,ytrlq method (;... flue,, drying tn[,r, IN, may bo done byadd;nr g a small amount 01 1;r simply 10
keep Via sludge leash• b; nal nbc.saarTl an amour that would ba ebqui ed so aehisv. IabiliCal;dn 0
organic miner. A nonaer,lod tank wxid simply bo usod to Cecan[ sludge piw to dawaaar;r+9 and would
simply be wed t9 docaal shvdgr p+iw to d.wal,rinq sod would not show long pa+➢od. (several digs or
d.loraaion) without tosult,nq odor pmbla :
(49)Stvdgo rncinOW.19; A [.,.at. designed 1. burn Judgo aril la ronwvo at taro;tivr• and combustdalo
mktariala and reduce Iho stadga to a amlgo ash;
(50)Sludga Stabilization (Chemical or Thermal). A process b make valid sludge loss odoaays and
puuo;c6bh, and to rodvca lhr pak,ayanic aroanism content; This may be done by pl{ 2djvrtmrn1
chlorine 4021ing, or by hest uoatmeni-
PI)Sfvdp. Thickan.r. A type of ..dime nsation lank in which the sludge Is paraded to scalp and
bhlek.n Waugh 29"111;0. and privity;
(52)5nbiilation tagoon, A trips of o,idation lagoon In which bfolog;cat oxidation of wgan;c malf.r is
04cl.d by rulural vantf.r of oxygen so the water from au (n9[ a poFshing pond);
(D)St.nd-By Power Supp}f. on ill. or pa,"N..Ioctrkal g.nersling equipment;
(5 t) Static Screens, A 11146nsry ,croon detfgned to remove solids including non.biodogrldibli
Pan;cvlata (0oalibl■ solid[, syspand•d solids and 6oD r•ducaan) [ram municipal and indvslr;al
wastewater Paalmenb systems:
ISS)ieniafy Trealmonl. A slaga of 99alm.n4 following secondary which is primaAy for the purposn
of .fawn( poish;rV. A saz9ng lapoon a sand of coal filler night bet arn;ioyed fee this purpose.
(5617hrmal Pollution Con:o1 D.vic.. A do0k. plavid;ng for the vans[., or hail tram a frv;d Ilow;ng
in tvbes 10 1"111-1 fluid WILSide Iho Ivbtl, w vice versa: or, other means of iagv[%fing
liquid temperafures-
(57)Th•tmal Sludge Conditianor- A eeneibion;rg poeeos by which heat Is added foe x ptouaaod period
of lime to P P40Y, the dewacuabllity of .1u49. by the xOlubl4i.9 and hydraubixtng of the "Millar and
moa hlghdy hydrated slut.,• pvI;cs.a;
(Sa)ieric Mat.n.1s. Thais wi,i.s or co -sin (ions of wallas including Frets-caysing agents whisk
after disrha,ga and upon 0aposun, ingoal;on, inhalation b, assimilation into any organism t4ho,
directly learn the onvfronm.m or;nCc.ety by ingestion through 1694 ehtim, Will cause dexth, discus.
behavioral ibnormalids canc.t, parsiic mvlal;ons, physiological mallvncbons fin wing masunC60AS
in fspiodu6off) or physical defernalions, in such eseganisms Or their offspring; Toxic materials
inclvde, by way illustration and not Pronation; lead, cadmium, chromium m•scury, vanadivm.
Ift-AIC, lint, wlho•nivo•c;Jor•be ref ere. (OHCS poychfo4milad biphenyls (PCIS.) and dichlorod;phenyt
stichlocoelham (DoT): and any other naia(;cels that have or may hereafler be drterndn•d to have toxic
prapnlies:
i59 1Trickrin p blur, A bioldgiol vo=;Heol unit consisting of maloriar such as broken Ston• or rock
*ret which wlst0wiler is dis1r15046. A high rale Vickl;ng filler is one which is op1nua-2leb.7veen
10 and 30 mgd per acre, A law ralo irkUing filter is one which is designed [a P.,al. at on. 'bc low
mgd py act.;
(60ITt4XIing Fiher (Paekod To,eaq, A plug flow lyp• of opualion in which waff.wal•r flows down
Nrough cvccesIN- (lyes. of media a, filtrate material; Organic material is removed cont;nua::y by
2c6vr biological rrsed paowsh in oath sxnss;v■ layer. This method mxy psodvco '..00ndary- cbxfilr
0rfluenl, or may ba adapted 10 podu0e a ruuiG.d efhuen[;
(61)vacuwn Felten, CsnI4Jvgoa, or F1r91r Prots•t. Dsvices which are det;gned to remove eseoss
water from oihaf digested e, vnd;9etud trudg. Paint 10 eYsposal Of lana+r treatment,