WQ0005906_Final Permit_19980305

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
March 5, 1998
Jan A. Kneib, Environmental Manager
E. I. DuPont de Nemours & Co., Inc.
Post Office Box 800
Kinston, North Carolina 28502-0800
Dear Mr. Kneib:
PINW
4�,
D E N R
Subject: Permit No. WQ0005906
E. I. DuPont de Nemours & Co., Inc.
Kentec Site
Groundwater Remediation Facilities
Lenoir County
In accordance with the renewal request received September 5, 1997, we are forwarding herewith
Permit No. WQ0005906, dated March 5, 1998, to E. I. DuPont de Nemours & Co., Inc. for the continued
operation of the subject groundwater remediation facility.
This permit shall be effective from the date of issuance until February 28, 2003, shall void
Permit No. WQ0005906 issued August 20, 1993, 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, you have the
right to request an adjudicatory hearing upon written request within thirty (30) days following receipt of
this permit. This request must be in the form of a written petition, conforming to Chapter 150B of the
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
questions concerning the Groundwater Conditions o.
contact Ken Pohlig in the Groundwater Section at
information concerning this matter, please contact Mr
547.
is being forwarded to you. If you have any
groundwater monitoring requirements, please
[phone]. If you need any additional
Michael D. A en at [phone] extension
Sincere
./—A. Preston Howard, Jr., P.E.
cc: Lenoir County Health Department
Washington Regional Office, Water Quality Section
Washington Regional Office, Groundwater Section
Bob Cheek, Groundwater Section, Central Office
Technical Assistance and Certification Unit
Non -Discharge Compliance/Enforcement Unit
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

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
GROUNDWATER REMEDIATION 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
E. I. DuPont de Nemours & Co., Inc.
Lenoir County
FOR THE
continued operation of a 20,000 GPD groundwater remediation system with 2,000 GPD being reused in
the Kentec Facility and the remaining flow being collected into a 20,000 gallon railcar and being
transported to the E. I. DuPont de Nemours & Co., Inc.'s Kinston Wastewater Treatment Facility
(NPDES Permit No. NC0003760).
The Kentec Facility consists of approximately 2,605 linear feet of 6-inch perforated groundwater
interceptor piping, two simplex pump stations equipped with Myers 1 HP pumps and high water alarms,
a sand filter, two PAL 20 cartridge filters, two PAL 30 cartridge filters, a 600 gallon surge/pretreatment
tank, an Ultrox F-325 UV/oxidation reactor with a 14 pound ozone generator and peroxide feed with
ultraviolet light, two 165 pound granular activated carbon canisters, and two 16,000 gallon holding
tanks.
The groundwater remediation facility will serve E. I. DuPont de Nemours & Co., Inc., with no discharge
of wastes to the surface waters, pursuant to the renewal request received September 5, 1997, and in
conformity with the project plan, specifications, and other supporting data subsequently filed and
approved by the Department of Environment and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until February 28, 2003, shall void
Permit No. WQ0005906 issued August 20, 1993, and shall be subject to the following specified
conditions and limitations:
I. GENERAL CONDITIONS
This permit shall become voidable unless the subject groundwater remediation and pump and
haul activities are carried out in a manner which has been approved by this Division.
2. This permit is effective only with respect to the nature and volume of wastes described in the
application and other supporting data.
3. The facilities shall be properly maintained and operated at all tunes.

4. 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 Water Quality (Division) 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.
5. No type of remediated groundwater other than that from E. I. DuPont de Nemours & Co., Inc.'s
Kentec Site shall be included in the pump and haul activities.
6. This permit shall become voidable unless the agreement between E. 1. DuPont de Nemours &
Co., Inc., and CSX Transportation or Conoco Transportation for the transportation of the
remediated groundwater is in fall force and effect.
7. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall cease operation of all pump and haul activities and take immediate
corrective actions, including those that may be required by this Division.
The groundwater collected by this system shall be treated in the E. I. DuPont de Nemours & Co.,
Inc.'s Kinston Wastewater Treatment Facility (NPDES Permit No. NC0003760 prior to being
discharged into the receiving stream.
9. The remediated groundwater from the E. I. DuPont de Nemours & Co., Inc.'s Kentec Site will be
accumulated in a 20,000 gallon railcar and shall be sampled and analyzed in accordance with
Condition 1 22 of the subject permit prior to being conveyed through any primary treatment
components at the E. I. DuPont de Nemours & Co., Inc.'s Kinston Wastewater Treatment
Facility. The introduction rate shall not exceed 20,000 gallons in a 24 hour period.
10. The Washington Regional Office, telephone number [phone], shall be notified at least
forty-eight (48) hours in advance of operation of the pump and haul activities 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.
11. The Permittee is liable for any damages caused by a spill or failure of the pump and haul
operations.
12. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to insure
proper operation of the subject facilities.
13. The Permittee or his designee shall inspect the groundwater remediation and collection 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 maintain 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 as long as the pump
and haul activities are being conducted and shall be made available to the Division or other
permitting authority, upon request.
14. Any duly authorized officer, employee, or representative of the Division may, upon presentation
of credentials, enter and inspect any property, premises or place on or related to the groundwater
treatment and pump and haul facilities at any reasonable time for the purpose of determining
compliance with this permit, may inspect or copy any records that must be maintained under the
terms and conditions of this permit, and may obtain samples.
2

15. An accurate record of the pump and haul activities must be maintained by the Permittee,
indicating:
a. date groundwater is removed from the facility,
b. name of facility from which groundwater is removed,
c. name of facility receiving groundwater,
d. volume of groundwater removed, and
e. status of permanent disposal option.
These records shall be submitted monthly to the Washington Regional Office on or before the
fifteenth (15) day of the following month.
16. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division in accordance with North Carolina General
Statute 143-215.6A to 143-215.6C.
17. 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.
18. The Permittee shall provide for the installation and maintenance of an audible and visual high-
water alarm on all storage and pumping facilities associated with this pump and haul operation.
19. A copy of the approved plans and specifications shall be maintained on file by the Permittee for
the life of the project.
20. Noncompliance Notification:
The Permittee shall report by telephone to the Washington Regional Office, telephone number
[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 process unit failure, due to known or unknown reasons, that renders the facility
incapable of adequate wastewater treatment, such as mechanical or electrical failures of
pumps, aerators, compressors, etc.; or
b. Any failure of a pumping station, sewer line, etc. resulting in a by-pass directly to receiving
waters without treatment of all or any portion of the influent to such station or facility.
Persons reporting such occurrences by telephone shall also file a written report in letter form
within five (5) 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.
21. 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 15A NCAC 2H .0205 (c)(4).
22. Each railcar shall be sampled for the following parameters:
Monthly Average Railcar or Tanker
Parameter Railcar or Tanker Concentration` Concentration`
1,1-Dichloroethane (DCA) 14 µg/ljtcr 21 µg/liter
1,1-Dichloroethylene (DCE) 14 µg/liter 21 µg/liter
1,4-Dioxane 200 µg/liter 300 µg/litcr

' The following concentrations were determined from the Treatability Statement outlined in the
"Kentec Corrective Action Plan," dated July 11, 1991, prepared by CH2M Hill for E. 1. DuPont
de Nemours & Co., Inc.:
1,1-Dichloroethane (DCA) 7 µg/liter
1, 1 -Dichloroethylene (DCE) 7 µg/liter
1,4-Dioxane' 100 µg/liter
23. 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.
24. This permit may be modified, or revoked and reissued to incorporate any conditions, limitations,
and monitoring requirements the Division deems necessary in order to adequately protect the
environment and public health.
II. GROUNDWATER COMPLIANCE SCHEDULE
1. Within sixty (60) days of reissuance of the permit, the Permittee shall submit two original copies
of a scaled topographic map (scale no greater than 1"-100') signed and sealed by a professional
engineer or a state licensed land surveyor that indicates all of the following information:
a. the location and identity of all monitoring wells (specifically, the A and B components of the
monitoring wells: i.e., MW-4A and MW-4B, MW-7A and MW-7B, MW-I OA and MW-IOB,
MW-1 IA and MW-11B, and MW-14A and MW-14B),
b. the location of all components of the waste disposal system including the groundwater
interceptor trench,
c. the location of all property boundaries,
d. the latitude and longitude of the established horizontal control monument,
e. the relative elevation of the top of the well casing (which shall be known as the "measuring
point"), and
f. the depth of water below the measuring point at the time the measuring point is established.
The survey shall be conducted using approved practices outlined in North Carolina General
Statutes Chapter 89C and the North Carolina Administrative Code Title 21, Chapter 56. The
surveyor shall establish a horizontal control monument on the property of the waste disposal
system and determine the latitude and longitude of this horizontal control monument to a
horizontal positional accuracy of +/- 10 feet. All other features listed in a. through e. above shall
be surveyed relative to this horizontal control monument. The positional accuracy of features
listed in a. through e. above shall have a ratio of precision not to exceed an error of closure of I
foot per 10,000 feet of perimeter of the survey. Any features located by the radial method will be
located from a minimum of two points. Horizontal control monument shall be installed in such a
manner and made of such materials that the monument will not be destroyed due to activities that
may take place on the property. The map shall also be surveyed using the North American
Datum of 1983 coordinate system and shall indicate the datum on the map. All bearings or
azimuths shall be based on either the true or NAD 83 grid meridian. If a Global Positioning
System (GPS) is used to determine the latitude and longitude of the horizontal control
monument, a GPS receiver that has the capability to perform differential GPS shall be used and
all data collected by the GPS receiver will be differentially corrected.
The maps and any supporting documentation shall be sent to the Groundwater Section, N.C.
Division of Water Quality P.O. Box 29578 Raleigh, N.C. 27626-0578.
4

2. E. I. DuPont de Nemours & Co., Inc. shall submit all progress reports and data required by the
Division established under the provisions of this permit and/or implementation of the Remedial
Action Study (RAS) to the Washington Regional Office on a quarterly basis, which will begin
with first day of the month following the month the RAS was placed into operation.
3. E. I. DuPont de Nemours & Co., Inc. shall operate and maintain the facility so as to minimize the
impact of groundwater contamination.
4. E. I. DuPont de Nemours & Co., Inc. agrees that this permit shall pertain only to the source and
property identified as the Kentec Site located in Lenoir County which is owned by E. I. DuPont
de Nemours & Co., Inc. Unless an applicable Special Order or permit has been issued by the
Commission, violations of groundwater standards resulting from additional sources for which E.
L DuPont de Nemours & Co., Inc. is responsible may subject E. I. DuPont de Nemours & Co.,
Inc. to all sanctions provided by N.C. General Statutes 143-215.2 and 143-215.6.
5. Pursuant to the terms of the Corrective Action Plan (CAP), E. I. DuPont de Nemours & Co., Inc.
shall continue to operate the wastewater collection (from the groundwater interceptor trench),
treatment and disposal system. The system will continue to operate until the groundwater
collection in the trench reaches the target clean-up levels specified in the approved CAP.
6. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall be
provided.
7. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in 15A
NCAC 2L, Groundwater Classi ications and Standards. The Compliance Boundary is for the
disposal system constructed after December 31, 1983 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 at or beyond the Compliance
Boundary is subject to mediate remediation action in addition to the penalty provisions
applicable under General Statute 143-215.6A(a)(1).
In accordance with 15A NCAC 2L, a REVIEW BOUNDARY is established around the 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.
Permit issued this the fifth day of March, 1998
NORZCA1NAEN IRON ENTAL MANAGEMENT COMMISSION
17
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0005906

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! PHASE 3 MONITORING WELL
0 RESIDENTIAL WELL
O PIEZOMETERS
NOTE: BASE MAP COMPILED FROM AERIAL
PHOTOGRAPHY FLOWN ON 2/10/89.
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E5-4
LOCATION OF GROUNDWATER
INTERCEPTOR TRENCH
Du Pont Kentec Facility

r?ATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: _7 .
Owner cr Contact Person: 3 � A _._ k=:,SZ
Mailing Address: P- G • f6 GC, C c) — ^_
County: Telephone: �t�ti —'D a — C. y
Present Classification: New Facility. Existing Facility
NPDES Per. No. NC00 Nondisc. Per. No.WO Health Dept,Per No,
Rated by: l r"�-' S:;w-v,F4' Telephone: 9l,-i�[f _f i? j_ Date: JCl Zr,Irl}
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office
ORC: tj- r,Jl:. Grade:
Check Classification(s): Subsurface Spray irrigation
Wastewater Classification. (Circle One) I W� i r Ill IV
Telephone:
Telephone:
_ Land Application
Total Points: it
AcL(i^rru._-jr t'1vr T(ZA1t,'1J4 `HQ CIZr_ iS 1"t �trtP—;rv^ run^ ��t S 17�/4Lrki�; WtlLky,
IN-FS A.NT EPOCCESSES AND FELATED CCNTP.CAL EQUlf?'vEN—T)WKEAREAN INTEGRAL PART OF NOUSTP!AL PRODUCTION EEALLL-NOT BE
GR-r1 W. iR 77.A. T} Ic t T I Y TAA6C
AV-- GEAVTY NrM1FrADQN LINES ARE EXEMPT FECatvt CLASSIFICATION-
SUBSURFACE CLASSIF'r—kTiON
(check all units that apply)
1. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4, sand fillers
S. grease traprinterceptor
5. oillwater separators
7. gravity subsurface treatment and disposal:
2. pressure subsurface treatment and disposal
SPRAY IRPJSkTICN CLAS.SIfIC,ATtON
(check all units that apply)
1.
preliminary treatment (definition no. 32 }
2,
lagoons
3.
septic tanks
4.
pump tanks
5.
pumps
6—sand
filters
7.
grease trapAntercepior
8.
oil/water separators
9.
disinfection
10.
chemical addition for nutrient/algae control
11,
spray irrfgalion of wastewater
In addition to the above classifications, pretreatment of wastewater In excess of these components shzll
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND AP?LICATO 7' ESIDUALS CLASSIRCATION (Applies only to permit holder)
1. Land of biosolids, residuals or ccnlaminaled soils on a designated site.
WAS i E-,',ATGr; 1 RE TV ?r i FACILITY CLASS:F)CATION
The following sysems shall b-a assigned a Class I dassftation, unlPsn the flow is of a signal;cant quantity or the lti-,;hnology is unusually
czmplex. to require considerationas by the Commission on a case -by -rase basis: (Check if Appropriate)
OT*aler Separator Systems consisting only of physical separation, pumps and disposal;
2 Septic Tar,k'Sand Fitter Systems consisting only of septic tanks, dosing apparatus, pumps,sand fitters, disinfey-:ion
and direct discharge;
Lz70on Systems consisting only of preliminary treatment. lagoons, pumps, disinfei--ion, necessary the-icai treatment fcr
agae or nulrient control, and direct discharge;
Closed -loop Fecyde Systems;
Groundwater Reme liatlon Systems consisting only of oiilwater separators, pumps, air -stripping, czrtvn adsorp.ticn, d:s n'e^ lcn
and disc =J;
Aquacu::tare o eratlons with discharge to surface waters;
7. ti"Dater Plant sludge handling and back -wash water treatment:
S- Seafood processing consisting of screening and disposal.
9 Single-family d:su'tarojng systems, with the exception of Aerobic 'treatment Units, will be classified it permitted afler July 1.
1993 or if upon inspeCion by the Division, it is found that the system is not being adequately operated or maintained. Sl;eh
Systems will be nct ied of the classification or reclassification by the Commission, in writing.

The following scale is used for rating wastewater treatment facllities' (circle appropriate points)
ITEM PCINTS
( 1 )
Industrial Pretrealmarx Units or Industrial Pretrealmem Program (see dellnhion No. 33)...................................................4
(2)
DESIGN FLOW OF PLANT IN gpd jnal appiir2ble to non-contamin2196 cooling walars, sludge handling facilities for
water purification plants, totally closed cycle systems(see delinition No. 11), and facilhies consisting only or Item
(4)(d) or Items
(4)(d) and (11)(d)]
0 - 20.000._.__.......................................................................................................................................4
20.001 50,O00................................................................................................................................. `
.....3
50,001 - 100,000.1..................... ........... ............. ..
100.001 -250,000...................................................................................................................................4
250,001 - 500,000..........................................................._......................................................................5
500,001 - 1.000.000....................................... ....... ............... ................................................................... a
1,000,001 - 2,000.000...........................................................................................................................10
2.000,001 (and up) rats 1 point additional for each 200.000 gpd capacity up to a maximum of ........ „....... 30
Design Flow (gpd)
(3)
PRELIMINARY UNrTSIPROCESSES (see oefinition No.32)
(a)
Barscaers'—...........................................................................................................................................1
or
(b)
Mechanical Screens, Static Screens or Comminuting Devices ...................... _......................... ......................... 2
(c)
Grit Removal..............................................................................................................................................1
or
(d)
Mechanical or Aerated Grit Removal ...................................................... .... ........................ ........................ 2
(e)
Flaw Measuring Device................................................................................................................................1
(1)
or
Instrumented Flow Measurement......................................................•........................................................
(g)
Preaeratlon...............................................................................................................................................
(h)
Inlluerx now Equalization..........................................................................................................................2
(1)
Grease or Oil Separators - Gravity ....... ..... .............................. -.............................. ..................................... 2
Mechanice.......................................................................................................................
Dissolved Air Flolatlon................................................................................................................................
())
Prechlorinatlon............. ..................................... ........... .... .................. ........................... _......................... 5
(4)
PRIMAPrYTREATMENTLNIT&PROCESSES
(a)
Septic Tank (see definition No. 43)............................................................................................................2
(b)
Imhoff Tank..............................................................................................................................................5
(c)
Primary Clarifiers.........................................................................................................................................5
(d)
Settling Ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge ha^+dlirg facilities for water
purification plants, sand, gravel, clone, and other mining operations except recreational activities such az gam
orgold mining)...................................................................................................................................
(5)
SECONDARY TREATMENT LNRS+PROCESSES
(a)
Carbonaceous Stage
(I) Aeratlon-High Purity Oxygen System ................................... ....... ._................................. 20
DiffusedAir System.......................................................................................................1 0
Mechanical Air System (fixed. floating or rotor) .............. ............. --................. .............. 5
Separate Sludge Reasrailon ......................................................................................
(11) Trickling Filter
HighRate ....................... -................................................... ........................................... 7
Standard Rate..... .................................................._.......................................................6
PackedTower............................................................................................... ............5
(iii) Biological Aerated Fitter or Aerated Biological Finer ........ ... .............................................. -1 0
Ov) Aerated Lagoons ..........................................................................................................10
(v) Rotating Biological Contactors......................................................................................10
(vi) Sand Fillers -intermittent biological ... ............ ................................................................... 2
Recirculating biological........................................................._..........................................3
(vn) Stabilization Lagoons ....................................................................................................5
..
(vi
(lx} Single stage system for combined carbonaceous removal of BOO and nitrogenous removal by
nitrification (sae definition No. 12)(Points for this hem have to be in addition to items
(5)(a)(I) through
utilizing the extended aeration process (see definition No.3a)..........................................2
utilizing other than the extended aeration Process ...... .......................... I...........I...I.........8
(r) Nutrient additions to anhancs BOD removal......................................................................5
(xl) Blolcglcal Culture (-Super Bugs')addition........................................................................5
(b)
Nitrogenous Stage
(1) Aeration - High Purity Oxygen System ....... .... _..... ........................................ ..... „......... 20
DiffusedAir System.......................................................................................................1 0
Mechanical Air System (lixed, floating or rotor)..................................................................8
Separate Sludge Reaera]Ian.............................................................................................3
(il) Trickling Filier-High Rate...................................................................................................7
StandardFlata...............................................................................................................4
PackedTower .......................... -............ ................................................................. ....... 5
(lit) Biological Aerated Finer w Aerated Biological Filter...„..........„............................................1 0
(Iv) Rotating Biological Contactors ......................................................................................10
(v) Sand Finer- Iniermmeril biological...................................................................................2
Recirculatingbiological....................................................................................................3
(Yi) Gdrifiar............................................................................................................
(E)
TEn: Ant'
OR ADVANCED TREATMENT INITS'PRIOCESSES
(a)
Acvaied Carbon Beds - �
without carbon regeneration ... ..................... ...... ....... ......................... ................. ..............
4�
with carbon regeneration: .......................... _.......... ................................................ ................
(5)
Powdered or Granular Activated Carbon Feed -
without carbon regeneration .... ........................ ................ ....................................................
with carbon regeneration .................................... .............................. ....................... .---...... i 5
Air stripping ..................................................................................................................
( c)
Denhrilication Procaer.................................... ...... ............ _... .-......... .................. ....................... ............. 1 0
(e)
Electrodlatysis.................................................................................................... ..-_.....................................5
{!}
Foam Saparatlon............ ........................... ............................................... _...............................................
i61
Ion Exchange ...................................... ..... .......... ............... _.................. _................... I ...... I......................
(h)
Lard Application of Treated Effluent (sae definition No. 22b) (riot applicable for sand, gravel, stone
and other similar mining operations) by high rate InriltratIon...... _... ...... _........ _...... .................................. 4
(i}
Microscresns ....................... ....... ................... .....
f l)
Phosphorous Removal by Biological Processes (yes delinnlon No. 26)........................................................20
(k)
Polishing Ponds - without aeration ... ......................... ............................ _........... ............ ................ ..... 2
with aeration............................................_.................................................5

r�
(i)
Post Aeration • Cascade..............................................................................................................................0
diffusedor mechanical........................................................................................................2
(m)
Reverse Osmosis........................................................................................................................................5
(n)
Sand or Mixed -Media Filters - low rate........................................................................................................
highrate ........................ .......................... :...................
(0)
Treatment processes for removal o1 metal or cyanide ...................... ................. ............................................ 1 5
( p )
treatment processes for removal of tOXIC materials other than metal or cyanide...-., ........................................ is
(7) SLLlDGFTRFATMENT
(a)
Sludge Digestion Tank - Heated (anaerobic)...............................................................................................10
Aerobic.........................................................................................
Unheated(anaerobic) ............................... ..... .:...................... I ............. I .............................. ..3
(b)
Sludge Stabilization (chemical or thermal) ..... .................. ................... ........... I ...... .................. .............
(c)
Sludge Drying Bads -Gravity ......................
VacuumAssisted......................................................................................................................................5
(d)
Sludge Elutriation......................................................................................................................................5
(a)
Sludge Conditioner (chemical ar thermal)...................................................................................................5
(1)
Sludge Thickener (gravity).......................................................................................................... 5 ...............
(g)
Dissoivad Air Potation Unit [not applicable to a unit rated as(3)(7)............................... •............................. a
( h )
Sludge Gas Utilization (including gas storage)..............................................................................................2
(t)
Sludge Holding Tank - Aerated,:... .... I ... ......................................... I—— .......... ­.......................................5
Noraerated.............................................................................................................................................2
(�)
Sludge Incinerator (not Including activated carbon rage neration)................................................................1 0
(k)
Vacuum Filter, Centrifuge, or Fitter Press or other similar dewatenng devices...................................................1 0
(8) RESiDOALS
UTILIZAT;ONlD)SPOSAL (incuding incinerated ash)
(a)
Lagocns..................................................................................................................................................2
(b)
Land Application (surface and subsurface) (sae definition 22a)
by contracting to a ;and application operator or landfill operator who holds the land application permit
orlandlilt pamnit........................................................................................................................................2
(C)
Dedicated Landfill(bunal) by the parmitlee of she wastewater treatment facility...............................................5
(a)
Chlorination..............................................................................................................................................5
(b)
Dechlodnation.........................................................................................................................................
(d)
Radiation............................................................................................................................................
(1 0) CHEMICAL
ADDITION SYSTEMS) ( see definition No. 9) [not applicable to chemical additions rated as Item (3)0),
ListC
(7)(e), (9a). (9)(b) or (9)(c) 6 points each:
...............................................
......................... ...................................•......................................................................5
....................................................................................................................................
...................................................................................................................5
(t 1) wLscaLANECU.S UNT&-PROCESSES
(a)
Holding Pords, Holding Tanks or Settling Ponds for Organic or Toxic Materials Including wastes from mining
operations containing nitrogen or phosphorus compounds In amounts significantly greater than Is common
fordomestic wastewater...........................................................................................................................A
(b)
Elkuenl Pow Equalization {not applicable to storage basins which are inherent In land application systems).....2
(c)
(d)
Stage Discharga (not applicable to storage basins Inherent In land application systems), ................................�y
Pumps..............._..................,.........................................................................._......................................ib
(a)
Stand -By Power Suppty..-...................................... ..................................................................................3
(f )
Thermal Pollution Control Device.......................................................................................................... 3
TOTALPOINTS
..........................................................................
CLASSIFICATION
Cass I ............................ ...................... ..... .................................................... 5-25 Points
CrassII .......................................................... ............................................... 26-50 Pcims
Classfit ............................................................... .......... .51-65 Points
ClassIV ..................................................... ........... ......................... .............. 66•Up Points
-----.-------------------...--------------------------_.---r.......,-----
Facilities having a rating of one through four points, Inclusive, do not require a omitted operator.
Facilities having an ac Naled sludge process will be assigned a minimum classification of Class Il.
Facilities hav'ng treatment processes
for the removal of metal or cyanide will be assigned a minimum classification of Class ll.
Facilities having treatment processes for the biological removal of phosphorus will be ass;fined a minimum classilicalion of Class If]
.00OA DE= h:filOtLs
.r,a following def!rff!ons s.`.all apply throughout this Subchapter.
(1) Ac;iva!eC Carbon Beds. A physicalichemica] method for reducing soluble organic material from wastewater onivarr,; The Column -type leads used in this
ma:nod wail have a Ucw rwe varying from two to eight gallons per minute per square loot and.may be either upf!ow or doom:ica carbon beds. Carbon may or
may not be regenerated mn the wastewater trawnris n plans cite; '
(7) Aerated Lagoons. A basin in which a!l solids are maintained in suspension and by which biological oxidwion or organic maner is reduced Ihrnugh artificially
azzWerwec transfer of oxygen on a flow -through basis;
(2) Aeration. A process of bringing about intimate Contact between air or high purity oxygen In a liquid by spraying, a5halion or diffusicn;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(e) Ag-ic;j!tura!ly managed sr<e. Any site on which a crop is produced, managed, and harvested (Crop ;nc}udas grasses, grains, trees, etc.);
(E) Air Sir:pping. A process by which the ammonium ion is first convar,ed to dissolved ammonia (pH adjustmenl) with the ammonia then released to the
a:rttos;.here by physieal means; or other similar processes which remove petroleum products such as benzene, toluene, and xylem:
(5) Carbon Ragenerauon. The regeneration of exha=acl rarbon by the use or a furnace to provide extremely high temperatures which volatilize and oxidize nhe
aosorbed impurnies;
(71 Carbonaceous Stage. A sl-,ge of wastewater treatment designed to achieve 'secondary' effluent Ilmhs;
(6) Carartluge. A mechanical oevice in which csrtrlugat force is used to separate solids Irom liquids or to saparate liquids of dttsreni dians,!as;
(9) Chemical Accrion Sy5lams- The addhfon of chamical(s) to wastewater at an application point for purposes of Improving toads removal, pH adjustment,
aikaiinly control, etc.; the ra a iilry to experiment with d`lerem chemicals and dtlerertf appllcafion points 10 achieve a sbecil'ic resvrt will be corisldered one
system; the capability to add chemical(s) to dual units will be rated as one system; capability to add a chemical at a different application points for dmarant
purposes will resuh in the systems being rated as separata systems-,
(10) Chemical Sludge Conditioning. The addition of a chemical compound such as Ilme, ferric chloride, or a polymer to wet sludge to coalesce the mass pnar to
hs appliu!1on to a dewatering device;
(11) Closed Cycle Syslems. Use of holding ponds or Wding tanks for containment of wastewater containing Inorganic, nontoxic materials from sand, gravel,
crushed stone ce other similar operations. Such systems shall carry a maximum of two points regardless of pumping facilities or any other appurtenances;
(12) Combined Removal of Carboracsous BOD and NftrNanous Removal by Nitrification- A single stage system required to achieve permit effluent limits on BOO
acid ammonia nitrogen within the same biological reactor,
(13) DecNoriratlon. The pafl.W or complete reduction of residual chlorine In a liquid by arty chemical or physical process;
(14) Oentt^ icaf!on Process. The Conversion of nitrate•rinrogen to nitrogen gas;