WQ0008129_Final Permit_19940310

State of North Carolina
Department of Environment, 0"V
Health and Naturai Resources AKJ Division of Environmental Management L
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary [D E H N F1
A. Preston Howard, Jr., P.E., Director
March 10, 1994
Mr. James Richard Adams,
Distribution Safety & Environmental Planner
Exxon Chemical Americas
13501 Katy Freeway
Houston, Texas 77079-1398
Subject: Permit No. WQ0008129 Modification
Exxon Chemical Americas
Exxon Terminal #4380
Groundwater Remediation
New Hanover County
Dear Mr. Adams:
In accordance with your request for permit modification received January 3, 1994, and the permit
application received July 6, 1993, we are forwarding herewith Permit No. WQ0008129 dated March 10,
1994, to Exxon Chemical Americas for the construction and operation of the subject groundwater
remediation facilities to serve Exxon Terminal #4380. The purpose of this permit modification is to reduce
the groundwater monitoring parameters for monitor wells 1, 5, and 7, substitute groundwater sampling
Method 8310 for Method 610, and adjust the groundwater sampling months to the requested sampling
schedule. However please note, the sampling reporting months are still the standard period used for this
type of permit; the sampling data must be received by the end of the month following the sampling month.
Please note that any sediment or sludge accumulated by the groundwater remediation facilities must
be disposed of in accordance with State laws and regulations. Please note the high water alarm devices for
the infiltrator units must be maintained and monitored to prevent infiltration gallery failure, as the intended
37 GPD/sq.ft. infiltration rate for this project is very high compared to other systems in the State.
This permit shall be effective from the date of issuance until October 31, 1998, 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.lssuance of this permit hereby
voids Permit No. WQ0008129 issued December 2, 1993.
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.
tti P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

If you need additional information concerning this matter, please contact Mr. John Seymour at 919/
733-5081
Sincerely,
�.4IIC.
A. Presto oward, Jr., P.E.
Director
cc: New Hanover County Health Department
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Jack Floyd, Groundwater Section
Law Engineering and Environmental Services
Facilities Assessment Unit
Training and Certification

1►I yaRKI 11114&01
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
INFILTRATION GALLERY PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North Carolina as
amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Exxon Chemical Americas
New Hanover County
FOR THE
construction and operation of a 144,000 GPD groundwater remediation facility consisting of a total of 24
recovery wells each provided with a pneumatic submersible pump at 3 gpm to 5 gpm rates, a 110 gpm
Puritron ultraviolet disinfection unit, a 1,450 gallon capacity surge tank with chemical feed capability
(hydrogen peroxide or magnesium oxide), a 1.5 Hp in -line transfer pump, two tray type 135 gpm air
strippers (using four shallow trays each) in series each with a 900 CFM blower, a 1.5 Hp in -line transfer
pump, an in line 7.5 Hp effluent pump, a 110 gpm sediment bag type filter, two 50 gpm carbon filters in
parallel at 6700 lbs of carbon each, four low pressure spray disposal trenches totaling 3,825 square feet
using infiltrator chambers with high water alarm system having logic circuitry to terminate pumping
operations upon high water conditions, and all necessary and associated piping, valves, controls, and
appurtenances to serve Exxon Chemical Americas Exxon terminal #4380 with no discharge to the surface
waters, pursuant to the modification request received January 3, 1994, and the application received July 6,
1993, 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 October 31, 1998, and shall be subject
to the following specified conditions and limitations:
1. Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted
facility has been installed in accordance with this permit and the approved plans and
specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.

2. The Wilmington Regional Office, telephone number 910/ 395-3900 shall be notified at least
forty-eight (48)-hours in advance of operation of the installed facilities so that an in -place
inspection can be made. Such notification to the regional supervisor shall be made during
-' the normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday,
excluding State Holidays.
3. This permit shall become voidable if the soils fail to adequately absorb the wastes and may
be rescinded unless the facilities are installed, maintained, and operated in a manner which
will protect the assigned water quality standards of the surface waters and ground waters.
4. In the event that the facilities 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 the construction of additional or replacement
treatment or disposal facilities.
5. The issuance of this permit shall not relieve the Permittee of the responsibility for damages
to surface or groundwaters resulting from the operation of this facility.
b. Any sludge generated from these treatment facilities must be disposed of in accordance with
General Statute 143-215.1 and in a manner approved by the North Carolina Division of
Environmental Management.
7. Diversion or bypassing of the untreated groundwater from the treatment facilities is
prohibited.
1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of
the wastewater treatment facilities. The operator must hold a certificate of the type and
grade at least equivalent to or greater than the classification assigned to the wastewater
treatment facilities by the Certification Commission. The Permittee must also employ a
certified back-up operator of the appropriate type and grade to comply with the conditions
of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class I facility at
least weekly and each Class II, III, and IV facility at least daily, excluding weekends and
holidays, and must properly manage and document daily operation and maintenance of the
facility and must comply with all other conditions of Title 15A, Chapter 8A, .0202. Once
the facility is classified, the Permittee must submit a letter to the Certification Commission
which designates the operator in responsible charge within thirty days after the wastewater
treatment facilities are 50%4 complete.
3. The facilities shall be effectively maintained and operated as a non -discharge system to
prevent the discharge of any wastewater resulting from the operation of this facility.
III. MONITORING AND REPORTING REQUIREMENTS
I . Any monitoring deemed necessary by the Division of Environmental Management to insure
surface and ground water protection will be established and an acceptable sampling
4 reporting schedule shall be followed.
04

2. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington Regional Office, telephone
number 910/ 395-3900 as soon as possible, but in no case more than 24 hours or on the
next working day following the occurrence or fist 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.
C. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-
pass directly to receiving waters without treatment of all or any portion of the
influent to such station or facility.
d. Any time that self -monitoring information indicates that the facility is not in
compliance with its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 15 days following first knowledge of the occurrence. This report must outline
the actions taken or proposed to be taken to ensure that the problem does not recur.
1. Monitor wells 1*, 2, 3, 3D, 4, 5*, 7*, S, 22, 23, 29, 30, 31, and Px-5 shall be sampled
every January, May, and September for the following parameters:
EPA Method 602 (including Xylenes, MTBE, and Isopropyl ether)
EPA Method 8310
PH
Water Levels
* These wells shall only be used to monitor water levels.
The measurement of water level must be made prior to sampling for the remaining
parameters. The depth of water in each well shall be measured from the surveyed point on
the top of the casing.
The measuring points (top of well casing) of all monitoring wells shall be surveyed to
provide relative elevations of the measuring point for each of the monitoring wells.
2. The effluent from the treatment system shall be sampled once every two (2) weeks for the
first three (3) months and monthly thereafter for the parameters specified below:
EPA Method 602 (including Xylenes, MTBE, and Isopropyl ether)
3. The effluent of the treatment system shall consistrntly comply with the groundwater
standards of 1 A NCAC 2L
91

4. The Compliance Boundary for the disposal system is specified by regulations in 15 NCAC
2L, Groundwater Classifications and Standards.The Compliance Boundary is established
at either (1) 250 feet from the waste disposal area, or (2) 50 feet within the property
boundary, whichever is closest to the waste disposal area. An exceedance of Groundwater
Quality Standards beyond the Compliance Boundary is subject to penalty provisions
applicable under General Statute 143-215.6A(1)a.
5. Also in accordance with 15A 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. Any exceedance of
standards at the Review Boundary shall require remediation action on the part of the
permittee.
6. All monitoring data (groundwater and effluent) shall be submitted to the Groundwater
Section, P.O. Box 29535, Raleigh, NC 27626, every February, June, and October. All
groundwater data should be submitted on Form GW-59. All effluent data for a period may
be submitted along with the groundwater monitoring data.
7. Any additional groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
8. All components of the groundwater recovery, treatment and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
9. The groundwater recovery treatment and disposal system shall be inspected weekly. If it is
determined that the system is malfunctioning, all repairs should be made as soon as
possible and reported to the Wilmington Regional Office.
10. All wells that are constructed for purposes of groundwater monitoring shall be constructed
in accordance with 15A NCAC 2C .0108 (Standards of Construction for Wells Other than
Water Supply) and any other State and local laws and regulations pertaining to well
construction.
1. Adequate inspection, maintenance and cleaning shall be provided by the Permittee to insure
proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the groundwater recovery and treatment
facilities to prevent malfunctions and deterioration, operator errors and discharges which
may cause or lead to the release of wastes to the environment, a threat to human health, or a
nuisance. The Permittee shall keep an inspection log or summary including at least the date
and time of inspection, observations made, and any maintenance, repairs, or corrective
actions taken by the Permittee. This log of inspections shall be maintained by the Permittee
for a period of three years from the date of the inspection and shall be made available upon
request to the Division of Environmental Management or other permitting authority.
3. Any duly authorized officer, employee, or representative of the Division of Environmental
Management may, upon presentation of credentials, enter and inspect any property,
premises or place on or related to the disposal site and facility at any reasonable time for the
purpose of determining compliance with this permit; may inspect or copy any records that
must be kept under the terms and conditions of this permit; or may obtain samples of
groundwater, surface water, or leachate.
4

1. This permit shall become voidable unless the facilities are constricted in accordance with
the conditions of this permit, the approved plans, specifications and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
3. This permit is not transferable. In the event there is a desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must be
submitted to the Division of Environmental Management accompanied by an application
fee, documentation from the parties involved, and other supporting materials as may be
appropriate. The approval of this request will be considered on its merits and may or may
not be approved.
4. The Permittee shall obtain a well construction permit from the Wilmington Regional Office
prior to construction of the recovery wells.
5. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
6. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
7. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revoke this permit as specified by 15 NCAC 211.0205
(c)(4).
8. The issuance of this permit does not preclude the Permittee from complying with any and
all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
9. The Permittee, at least six (6) months prior to the expiration of this permit, shall request its
extension. Upon receipt of the request, the Commission will review the adequacy of the
facilities described therein, and if warranted, will extend the permit for such period of time
and under such conditions and limitations as it may deem appropriate.
10. Issuance of this permit hereby voids Permit No. WQ0008129 issued December 2, 1993.
Permit issued this the 10th day of March, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Prestonoward, Jr., PE., Director /
Division of -Environmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0008129
5

Pehnit No. WQ0008129
March 10, 1994
Engineer's Certification
I, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project,
Project Name
Location
for the
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of the approved plans and specifications.
Signature
Date
Registration No.

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vy,'k t th FULLU NON CONrTROL SYSTEMS
Nang of Facility: d7r'
"Owner or Contact Person:
Mailing Address:
County: //t''i/}�ir r?,�f'�� - Telep one:(ca:, =1fe
Present Classification: New Facility Existing Facility
NPd)ES Per. No. NCDO Nondisc. Per. No.WQ�C�C' '!Z`t Heath Depl.Per No.
Rated by: 7m t rW Telephone: / i' -3s f�C Date: AJ'�' '
� /.�
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC: Grade: Telephone;
Check Classification(s): Subsurface Spray Irrigation Land Application
Wastewater Classification: (Circle One) 1 II Ill IV Total Points:
KE.6E PROCESSES AND RELATED CC? rTRQL FOUIPMEI fT WHCH ARE AN tNTE<�RA! PART OF INDUSTRIAL PRODUCTION SHALL
Np7 BE CONISIDERED WASTE TREATI.'EtirT FOR THE PURPOSE OFCLASSI 1CATICSIV_,4[tiS,'SEPTIC_TANK SYSTEMS CQ+''*ISTPJG
SUBSURFACE CLAS„lF1CAT)QN
(check a71 unils that apply)
i. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4. sand fillers
5, grease traptinlerceplor
6, oil/water separators
gravity subsurface treatment and disposal:
pressure subsurface treatment and disposal:
SPRAY IRRIGAT)ON CLASSIFr_ATION
(check all units that apply)
I.
preliminary treatment (definition no. 32 }
2.
lagoons
3,
seplic tanks
4,
pump tanks
5.
pumps
6.
sand filters
7.
grease trap/interceplor
a.
oil/waler separators
9.
disinleclion
10.
chemical addition for nutrient/algae control
11.
spray irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater An excess of these
components shall be rated using the point rating system and will require an operator with an
appropriate dual certification.
LAND APPLICATIONAI ESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of bicsofids, residuals or conlaminated soils on a designaled site,
-------------------------------------------------------------
WASTEWATERTREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class I classification, llrlle, s the flow is of a significant quantity or the lechnology is -
unusually complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate)
1. oil/wafer Separator Systems consisting only of physical separation, pumps and disposal;
2. Seplic Tank/Sand Filler Systems consisting only of septic tanks, dosing apparatus, pumps,sand fillers, disinleclion
and direct discharge;
3. Lagoon Systems consisting only of preliminary Ireatmenl, lagoons, pumps, disinfection, necessary chemical
treatment for algae or nutrient control, and direct discharge;
4,losed-loop Recycle Systems;
5. Groundwater Remedialion Systems consisling pnfy of/pumps, air -stripping, carbon adsorption, disinfection and
disposal;
6. Aquaculture operations with discharge to surface waters;
7. Water Plant sludge handling and back -wash water lrealmcr';
Seafood processing consisting of screening and disposal
Single-family discharging systems, with the exception of Aerobic Trealmenr Units, will be classified if permitted
af!er July 1, 1993 or if upon inspection by the Division, it is found That the system is not being adequalety operated
or maintained. Such systems will be notified of [lie classilicalion of reciaassitication by the Commission, in writing.
f rrrt �
ti
"Ito1-W
C,Frl�175k ` -
1

, REM
POINTS
f (1 } lndusirlal Fralrea6ment Units or Industrial Pretreatment Pro ram sea detinhion No. 33 ....4
v - (2) DESIGN FLOW OF PLANTIN gpd (not applicable to non-xnlaminalad cooling waler:r ^;edge handling
lacililies lot water purification plants, totally closed cycle sy sierrn(saa definition No. 11), and lacitilies
consisting only of Item (4)(E) or Items (4)(d) and (11)(d))
0 - 20.000............................................»..................................................... .............................
1
20.001 - 50,000...................... ............... .............. ............................ ....... ............ ..... ...»....•....
......... 12
50,001 100,000 .................................... .......................................................................... ....................a
100.001 - 250,000..--•----•-----•...............•--......................_...........................------------...................................4
250,001 500,000...............................................................-..r......................»,...,................................5
500.001 - 1,000,1300................. ....................................... .............................. ................................
...... "0
1.00O,1701 - 2,DD0,000.............. ............„..................................................................__..._....__....;........10
2,000,001 (and up) tale 1 point additional for each 200,000 ppd capacity up to a
maximumof .......................... .................... »..._».................
30
Design Flow (gpd)
(3) PRELIMINARY UNrTSIPROCESSES (see defirr,;on No.32)
(a) Bar Screens ........................... ................... »................................ ............. ............ .........................
.......... 1
or
(b) Mechanical Screens, Static Screens or Comminuting Da4zes_....................................................... 2
(c) Grit Rarnoval.... .........................................................................................................................................I
or
(d)
Wachanical orAerated Grk Removal .............................................................................................................2
(e)
Flow JkMasuring Device................................................................................................................................1
or
(1)
Instrumented now Measurement ........................ .................... .............. ............. »...,............ .-........ ........... 2
(0)
Preaeralion............................................................................................................................................... 2
(h)
Influent Flow Equalization .... ...........................»..................................................................................2
(i)
Grease or Oil Separators - Gravity... .......... .....-...»,,,,....._........................... ... ......................................... 2
Mechanical.................................................................................................................................3
DissolvedAir Flotation................................................................................................................................B
{))
Prechlorination..........................................................................................................................................
(4) PRIMARYTREATMENTLNITSrPFKXESSES
(a)
Septic Tank (see definition No. 43)............................................................................................................2
(b)
Imhoff Tank .. ........................................................................„..........................................................5
(c)
Primary Clariliers................................................................. ....................5
(d)
Settling Ponds or Settling Tanks for Inorganic Non-loxic Materials (sludge handling lacililies for
water purification plants, sand, gravel, stone, and other mining operations except recreational
activitiessuch as gem or gold mining) ... ......................................... ............................................................ 2
(5) SECONDARY TREATMENT LNrr-cVPF0CESS ES
(a)
Carbonaceous Stage
(I) Aeration -High Purity Oxygen System...............................................................................20
Diffused Air System.............................................. ........................................................10
Mechanical Air System (fixed, floating or rotor)................................................................
Separate Sludge Reasralion.......... ..... .............................................. ........ ......................... 3
(it) Trickling Filler
HighRate............................................................................................ .....................:.7
Standard Rate ........................ ................................ ,..................... ,...... ............. .............. 5
Packed Tower .................... :............... .......... ................ .................................. .................
(fit) Biologic at Ae rated Fille r of Ae rate d
Biological Filter .............................................................................................................1 0
(IV) Aerated Lagoons..........................................................................................................10
(v) Flowing Biological Coniactors............................................................ ............._.............10
(VI) Sand Fitters -intermittent biological..................................................................................2
Recirculating biological .................... :.................................. ..............................................
(vii) Stabilization Lagoons....................................................................................................6
(viii) CuArar..................................................................................... .................... ................ 5
(Ix) Single stage system for combined carbonaceous removal oI BOO and nilrogerious
removal by nhriGcation (sea de!inition No. 12)(Points for this item have to be in
addition to Items (5)(a)(i) through
utilizing the extended aaraiion process (sae definition No.3a)..........................................2
utilizing other than the a::lended aeration process ............ ................................................e
(x) Nutrient additions to enhance BOO removal......................................................................5
(xi) Biological Culture ('Super Bugs')addition........................................................................5
{b)
Nilr°genous Stage
(1) Aeration - High Purity Oxygen System.............................................................................20
Diffused Air System.......................................................................................................1 0
Mechanical Air Syslern {sized, Iloating or rotor) ............. ................ .................................. ...a
Separate Sludge RaaerAlion.............................................................................................3
Trickling Filter -Nigh Fate...................................................................................................7
Slandard Rate...............................................................................................................5
PackedTower ....................................................... ......................................... ................. 5
Biologica! Aerated Filtet or Aerated Biological Filter.............................................................1 0
(iv) Rolaling Biological Conlactors......................................................................................10
(v) Sand Filler - iniarmillenl bio!ogical...................................................................................2
Recirculating biological....................................................................................................3
{vi) Clariliar.............................................................................I.......I..
{6) TERTiA;;YORADVANCEDTRE4'fM&4TUNRSrPFOCESSES
(a)
Activated Carbon Beds -
without carbon regeneration ............................` .......5
with carbon regenoraiion.......................................................................................................1 5
(b) Povedored or Granular Activated Cr.rbon Feed -
without carbon rogenoration..................................................................................................5
Willicarbon regeneration....................................................................................................1 5
(2) Air siript,ing......................._..............,....,..........................................,............................,.............5
......... ..
::"..i:........... 1 0
j) Donitrilicationt'rucoss....................................................................... ......._.............._..
(°) Cleclrodialysis........................... ..............5
(11 foam .SeparAtion............................................................................ . ....... ................ .........................5

.... ............ ...... ......................... . . a
IL r
--kl:aI rocesses (See delinillon No. 26).........................................................20,
(k}
P0Iishing Ponds • withovl rtoralion.........................................................................................................2
wlth aeraoon................ .......................................... ............................ ........_.........--....5
(!)
Post Aerarlon - cascade ................................. .................................................................... .........................
diflusadof mechanical...................................................................... ........ ... .,....__..............2
(m)
Reverse Osmosis..............................................-----._........-.__.....__..............-......._. ................
(n)
Sind or Mixed -Media Filters - low rate ..... .......... ................................... _..__.... _... ..........._...,...._...2
` Ngh rate .................... ............................. ..... ................ 5
(o) -
7realment processes for removal of malal or cyarude..................... .............................................................. i s
(p)
trealment pr%jcssses for removal of toxic materials other than metal or cyanide. .... ...... . ..... . ...........15
(7)
Sl_l rG E TREATMENT
(a)
Sludge Digestion "Tank - Healed (anaerobic)........................................................................................... 10
Aerobic............................................................................................................................................5
Unhealed (anaerobic)... .................... .... ..................................................................................................3 .
(b)
Sludge Stabilization (chemical or thermal).....................................................................6........................_....5
(c)
Sludge Drying Beds -Gravily....................................................................................................................2
Vacuum Assisted......................................................................................................................................5
(d)
Sludge Elulriation... ... ...............................................................................................5
e
Sludge Conditioner chemical or thermal) ........................................ ........................................ ................... 5
(f)
Sludge Thickener (gravity)... .__. .......... ................._.....-.................._..............................5
( g )
Dissolved Air Flotation Unit [not applicable to a unit rated as(3)(1)).............................................................E
(h)
Sludge Gas Utilization (including gas storage) .............................. :............. 6...................................... ......2
(1)
Sludge Holding Tank Aerated.................................................................................................................5
Non -aerated ..................................... .. ................-...._....................«...............6....................2
(J)
Sludge Incinerator (not Including activated carbon regenerallon)................................................................10
(k)
Vacuum Filler, Centrifuge, or Filter Press or other similar dewalering devices.................. ........... .. ... ..........10
(S)
RESIDUALS
UTILI7ATION/DISPOSAL (induding Incinerated ash)
(a)
Lagoons. ....... .................. . .............................................. ,.................................2
(b)
Land Application (surface and subsurface) (sae delinillcn 22a)
by contracting to a land application operator or (andlill teperetorwho holds the land
application permit or landfill permit............................................................................................................2
(c)
Dedicated Landfill(burial) by the permitlee of the waslewaler trealmenl facility ..................... ......5
{ 9)
OrS�FEC: iX:N
(a)
Chlorination..............................................................................................................................................5
(b)
Oechlorinalson......... .............................................................. ................. ........ ........................ .......... I .... I ... I
(c)
Ozone.....................................................................................................................................................5
(d)
Radiation. ... ... ........ .... ........ ..........4......6.........5
(10)
CHEMICAL
ADDITION SYSTEM(S) ( see definition No, 9) (not applicable to chemical additions rated as Item
(3)(j),
(5)(a)(xi), (5)(a), (6)(b), (7)(b), (7)(e), (9a), (9)(b) or (9)(c) 5 points each:'
List.............................
........................................................................ .................... ............. 5
................................................................................................... ............................ S
............................................................................................................................... S
.........................................................................................................................5
(1 1)
MISCELLANEOUS UNr VPROCESSES
(a)
Holding Ponds, Holding Tanks or Senfing Ponds for Organic or Toxic Malelials Including wastes
from mining operaiions containing nitrogen or phosphorus compounds in amounts significantly
greater than is common for domestic wastewater .................. ............................................................. ..........4
(b)
Eliluent Flow Equalization (not applicable to storage basins which are Inherent in land application
systems)................................................................................................................................. 2 .................
(c)
Stage Discharge (not applicable to storage basins Inherent in land application systems).................................5
(d)
Pumps. ..... ....................................................,................-..................-......._........._.._...................3
(e)
Stand -By Power Supply........................................................................................ 3 ....................................
(1)
Thermal Pollution Control Device............................................................ ........................... ..... ........ I .... ....-..3
TOTALPOINTS .............................. ..;............. .............. I..............
CLASS IFICATK' N
CtrsI.....................-..................................................................................5-25 Points
Class11.........................................................................................................26.50 Points
ClassIII............................................................._.................I........................51.65 Points
ClassTV ... ............... ................................... ........................................... ......66-Up Points
tcililies having a rating of one through lour points, inclusive, do not require a cenEied operator.
:iIilies having an aclivaled sludge process will be assignad a mnimum classificalion of Class II,
- slit+es having irsatmenl processes for the removal of metal or cyanide will be assgned a minimum classification of Class 11.
chilies havini irealrrkenl processes for the biological rer„oval o) phosphorus will be assigned a minimum ciassificalionol Class 111,
W DEFINITIONS
s Wowing daGripons [half apply "roughotn th%s Subchapler.
Acivalad Carbon Sods. A physicalrchomical method fix, rsdjcing soh=Sa organic material horn waslowalor alfluent: Tho column -type beds used in Iris mapsod will have
ow tale varying Item two to eight gallons pat rrintrsa par iquali loot acd may be eidtor upfiow of downfiow carbon beds. Carbon may or may not be reg7neraled on the
c1ewat0r tFearnoni plant site;
Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic M&hai is reduced dvough artificially acceteraled
tsior of osygan on a flow -though basis;
AaraGon. A process of WMong abotn inemale contact between air or Koh purify oxygen in ■ ligvid by spraying, agilation os dirlusionX3a) Exlended Aeration An
"&lad srudgo process militing a nirin-mm hydraulic dasention Ems of sE hogs.
AgrictlltxaHy managed site, Any site on which i crop is produ-od, managod, and harvestoo (Crop includes grasses, grains, roes, etc.):
Air.' :mg, A process by which site ammonium ion is firs; cowened to d,ssolvod ammonia (pH ,6;uttrnem) w-Rh of ammona "n Foliated to Via arnosprwre by
aici is; or other sirrilar procossos wNch removu povota•�m peodru atxh as benzene, lorusno, and xylsne;
Cart egonor&iim. The rtgenonlion or exhausled carbon bj ew use at ■ runaee to provide otlromeip hgh lornporatsrres which vofatliru and oxidlte Ov e-saorbod
C �� .00us Stage. A siege 01 wastowaler Iroatrrwnl dasi;nad to srti►vo 'secondary' rrnuem limits;
Ct .90. A modtan;cAl. device in wn;cY cOnuilugal lorce is -.sod Io s:,a+ato solids Irom tiq..ids of to it -panto liquids of dida•eni donsitius:
Chemical Mtilian r.fsiorpx• T'.o adi5:1, at cltnmisal(s) 10 wx:::walrr tI an ayl6ic a:iOrt pa:+s la pvr pose, or +mpr o.•i ny SM,ds rorno tar, prl adios enM:, .•✓. a.n na CM:fQI•
$110 c.paWtiy 10 vap.n ntont w:_s drrlorr,nr elwnicals and !s,r:=•an: a;r� :a_ors points to achiovtr a specific ltsuA wrill 60 cau•or+bd one tfstorn; stw capawilf 10 add