WQ0008381_Final Permit_19940106

State of North Carolina
Department of Environment,
Health and Natural Resources • •
Division of Environmental Management rr
James B. Hunt, Jr., Governor 1
Jonathan B. Howes, Secretary C) E H N
A. Preston Howard, Jr., P.E., Director
January 6, 1994
Mr. David Massengill, Environmental Engineer
Georgia-Pacific Corporation
133 Peachtree Street, NE
Atlanta, Georgia 30348-5605
Subject: Permit No. WQ0008381
Georgia-Pacific Corporation
Wilmington, N.C.
Building Materials Distribution Facility
Groundwater Rernediation
New Hanover County
Dear Mr. Massengill:
In accordance with your application received August 26, 1993, we are forwarding herewith Permit
No. WQ0008381 dated January 6, 1994, to Georgia-Pacific Corporation for the construction and
operation of the subject groundwater remediation system. Georgia-Pacific Corporation is expected to show
the subject remediation system can successfully treat and reinfiltrate the subject petroleum contaminated
groundwater at the GPD per square foot rate shown in this permit. Please note this permit contains
conditions that require monitoring of the system performance and the addition of facilities if determined to
be necessary. This monitoring includes a 60 day period that restricts the infiltration gallery flow to a
maximum of 30,000 GPD.
This permit shall be effective from the date of issuance until November 30, 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.
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.
P.O. Box 295:36, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

One set of approved plans and specifications is being forwarded to you. if you need additional
information concerning thig matter, please contact Mr. John Seymour at 919/ 733-5083.
Sincerely,
A. Prest Howard, Jr., P.E.
cc: New Hanover County Health Department
Wilmington Regional Office, Water Quality Section
Wilmington Regional Office, Groundwater Section
Jack Floyd, Groundwater Section
Integrated Science & Technology, Inc.
Facilities Assessment Unit
Training and Certification

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
INFILTRATION GALLERY PERMIT
Tn 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
Georgia-Pacific Corporation
New Hanover County
FOR THE
construction and operation of a 115,200 GPD (80 GPM max.) groundwater remediation system consisting
of three 35 gpm recovery wells, a 5,000 gallon surge tank, a transfer pump rated at 60 to 100 gpm, a 100
GPM packed air stripping tower (2.5 feet dia. by 24 feet tall) with a 900 cfm blower, a transfer pump rated
at 60 to 100 gpm, as required and when necessary a 100 GPM particle filter system (bag filter type), as
required and when necessary an 80 GPM carbon filtration system, when necessary a surge tank to recycle
wastewater back through the air stripper, an 80 GPM 150 foot long by 3 foot wide by 8 feet deep
infiltration gallery with a special well monitoring and automatic remediation system cut off float switches,
and all associated piping, valves, controls monitors, alarms and appurtenances to serve Georgia-Pacific
Corporation's Wilmington N.C. Building Materials Distribution Facility with no discharge to the surface
waters, pursuant to the application received August 26, 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 November 30, 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.
6. 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% 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.
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 particle/sediment filter system and the carbon filter system shall be used as part of the
treatment train if influent and effluent sampling indicate the presence of semi -volatile
constituents in the wastewater. If sampling indicates semi-volitile constituents are
nondetectible, carbon filters and sediment filters will not be necessary. Sampling for BTEX
and MTBE, as required by pezznit condition IV.6, will be adequate for that case.
2

3. 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 first knowledge of the occurrence of any of
the following:
a. Any occurrence at the wastewater treatment facility which results in the treatment of
significant amounts of wastes which are abnormal in quantity or characteristic, such
as the dumping of the contents of a basin or tank; the known passage of a slug of
hazardous substance through the facility; or any other unusual circumstances.
b. Any process unit failure, due to known or unknown reasons, that render the facility
incapable of adequate wastewater treatment such as mechanical or electrical failures
of pumps, aerators, compressors, etc.
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. Upon completion of the infiltration trench, three (3) 4-inch diameter PVC water -level
monitoring wells will be constructed at the locations shown on Figure 1. Each well will be
constructed three (3) feet from the edge of the infiltration trench and in native soil. The well
will be screened from ten feet to twenty feet below ground surface and 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.
2. The Wilmington Regional Office (telephone number [phone]) shall be notified at
least forty-eight (48) hours prior to the construction of any monitoring well so that an
inspection can be made of the monitoring well location. Such notification to the regional
groundwater 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. Each of three water -level monitoring wells will be equipped with a float -activated high-level
shutoff device which will shut down the remediation system when the water level in the
well rises to within one (1) foot of the bottom of the infiltration trench. The shutoff device
will be designed such that the remediation system will remain off until the water level in
that well falls to an elevation two (2) feet below the bottom of the infiltration trench. The
system will be wired so that any of the three wells may shut down the system.
3

The water level in the center monitoring well will be measured at least once every day and
this information will be provided to the Central Office of the Groundwater Section. The
remediation system will be equipped with an electronic monitor which automatically
records the time and date of every system shutdown event. If more than six (6) float -
activated shutdown events are recorded during a consecutive 30-day period, the system
flowrate will be reduced by 10% of its rate at that time. If the situation persists after the
flowrate has been reduced, a meeting will be held to discuss and resolve the problem.
The system will initially perform at a pumping rate not to exceed 30,000 gallons per day.
This rate will be maintained for sixty (60) days and the daily water level readings in the
center water -level monitoring well will be furnished to the Raleigh Central Office on a
weekly basis during that time. The record of float -activated system shutdown events will
also be furnished to the Raleigh Central Office, and a determination shall be made by the
Central Office as to whether the flowrate of the system should be increased.
4. Within sixty (60)days of completion of all monitoring wells, 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 each monitoring well,
b. the location of the waste disposal system,
C. the location of all property boundaries,
d. the latitude and longitude of each monitoring well,
e. the relative elevation of the top of the well casing (which shall be known as
the "measuring point"),
f. and the depth of water below the measuring point at the time the measuring
point is established.
5. Upon completion of all well construction activities, a certification must be received from a
professional engineer certifying that the monitoring wells are located and constructed in
accordance with the Well Construction Standards (15A NCAC 2C) and this permit. This
certification should be submitted with copies of the Well Completion Form (GW-1) for
each well. Mail this certification and the associated GW-1 forms to the Permits and
Compliance Unit, Groundwater Section, P.O. Box 29535, Raleigh, NC, 27626-0535.
All monitoring well location and elevations shall be surveyed by a State licensed land
surveyor.
6. The influent and effluent from the treatment system shall be sampled for BTEX and MTBE
by EPA Method 602 immediately prior to system start-up, once every two (2) weeks for
the first three (3) months and monthly thereafter.
The results of the sampling and analysis shall be sent to the Groundwater Section, Permits
Unit, P.O. Box 29535 Raleigh, N.C. 27626-0535 within 30 days of sample collection.
7. The pertnittee shall retain copies of records of all monitoring information, -including all
calibration and maintenance records, all original strip chart recordings for continuous
monitoring instrumentation and copies of all reports required by this permit, for a period of
at least three (3) years for the date of the sample, measurement, report or application.
Records of this monitoring information shall include, but not be limited to, the following:
a. the date, exact place, and time of sampling or measurements,
b. the individual who perforred the sampling or measurements
C. the date the analyses were performed,
d. the analytical techniques or methods used, and
e. the results of any such sampling, measurements, and analyses.
4

8. The permittee shall report any monitoring or other information which indicates that any
contaminant may cause an endangerment to an underground source of drinking water and
any noncompliance with a permit condition or malfunction of the injection system which
may cause fluid migration outside the injection zone or area. The information shall be
provided to the Wilmington Regional Office orally within 8 hours of the occurrence and a
written submission within five days of the occurrence. The written submission shall
contain a description of the noncompliance and its cause, the period of noncompliance,
including exact dates and times, and if the noncompliance has not been corrected, the
anticipated time it is expected to continue, and any steps taken or planned to reduce,
eliminate and prevent reoccurrence of the noncompliance.
9. The following monitoring wells shall be sampled every March, June, September and
December.
MW-5
MW-6
MW-9
MW-11
MW-12
MW-14
MW-15
MW-16
MW-18
MW-21
10. Monitor wells shall be sampled for the following parameters:
Benzene Ethylbezene
MTBE Xylenes
pH Toluene
Water Levels Total Petroleum Hydrocarbons
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 results of the sampling and analysis shall be sent to the Groundwater Section,
Wilmington Regional Office and to the Groundwater Section, Permits Unit, Post Office
Box 29535, Raleigh, North Carolina 27626-0535 within 30 days of sample collection.
11. 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.
12. Effluent concentrations of contaminants shall not exceed 5% of the influent concentrations
(i.e., 95% treatment efficiency). If the treatment system fails to produce an effluent in
compliance with this condition, the Division may require the construction of additional
treatment units.
13. Isoconcentration maps in both the vertical and horizontal directions shall be developed
using the groundwater monitoring data collected prior to system operations for MTBE and
BTEX. A water level contour map must also be developed on a quarterly basis. These
maps shall be submitted along with all groundwater monitoring data.
14. All components of the groundwater recovery, treatment and disposal system shall be
properly weather -proofed to prevent freezing and failure of the system.
PI

15. 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 (a)(1).
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.
16. It is the responsibility of the Wilmington Regional Office to enforce all applicable
Groundwater regulations and to issue appropriate notification to the permittee when
exceedances or violations are observed
17. Any additional groundwater quality monitoring as deemed necessary by the Division of
Environmental Management shall be provided.
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.
M15_-10A4.014 101_V N 1►
1. This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans, specifications and other supporting data.
2. This permit is effective only with respect to the nature and volume of wastes described in
the application and other supporting data.
1.1

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 2H .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.
Permit issued this the 6th day of January, 1994
NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
Ln rWC0"o0'0A-QQ /L
A. Preston fjoward, Jr., P.E.; Director J
Division of Ehvironmental Management
By Authority of the Environmental Management Commission
Permit No. WQ0008381
7

Permit No. WQ0008381
January 6, 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.

4m m M
K
0 50 100
SCALE IN FEET
(APPROXIMATE)
-INFILTRATION
y y �GALLERY
a
w y
y y OFFICE
y �
-Y w
y
O + w MW-5
y
uj
O
Li
Q
Q
PROPOSED LOCATION
GEORGIA—PACIFIC FACT
WILMINGTON. NORTH C
LEGEND
2 INCH DIAMETER
MONITORING WELLS
®
_ � lIvcH VIA flETER
PVC VIATcn-L&V&L
NON17101Rl1V6 WE"5
1
+
*4'
— GRASSY AREAS
1
1•
FIGURE 1
GEORGIA-PACIFIC, INC.
GROUNDWATER REMEDIATION SYSTEM
NEW HANOVER COUNTY
WQ0008381/GW93177
LOCATIONS OF WATER -LEVEL
MONITORING WELLS

"t
RATING SCALE FOR CLASSIFICATION OF
WATER POLLUTION
CONTROL SYSTEMS
Name of Facility: e5eClrdlGt
1Pez_'-=71a
Owner or Contact Person:
Mailing Address:
1 3 3�?�� -
e'' S zF
County: ___ &a: Ale, /f
e y e.,0 --
Telephone:
2 2— 0
Present Classification:
f�4 -..--New
Facility
Existing Facility
NPDES Per. No. NCoo
~~ N ndisc. Per. No.WQ e2ocf Health Dept.Per No. —"
Rated by:
Telephone: eD4 L/
G(,) Date: AzG
Reviewed by:
Health Dept.
Telephone:
Regional Office
Telephone:
Central Office
Telephone:
ORC:
Grade: % Telephone:
Check Classification(s):
Subsue
Spray lrrigation
Land Application
Wastewater Classification: (Circle One) U
II 111 IV
Total Points:
SUBSURFACE CLASSIFICATION
(check a I units that apply)
1- septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4. sand filters
5, grease trapCnterceplor
6, oil/water separators
7._ 1 gravity subsurface "04rX disposal:
8, pressure subsurface treatment and disposal:
----------------------------
SPRAY IRRIGATION CLASSIFICATION
(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 trapliinterceptor
8,
oil/water separators
9,
disinfection
10.
chemical addition for nutrient/algae control
11.
spray Irrigation of wastewater
M
In addition to the above classifications, pretreatment of wastewater In excess of these components shall
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Appries only to permit holder)
1. land application of biosol ids, residuals or contaminaled soils on a designated site.
WASTEWATERTRFATIVIENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class 1 classification, unless the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case -by -case basis: (Check 'rf Appropriate)
1. Oil/water Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filter Systems consisting only of septic tanks, dosing apparatus, pumps,sand filters, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems;
S.—Groundwater Remediation Systems consisting only of o ator separators, pumps, air -stripping, carbon adsorption, di si ion
and dispos;�l;
6. Aquacullure operations with discharge to surface waters;
7—Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9.lSingle4amily discharging systems, with the exception of Aerobic Treatment Units, will be classified if permitted after July 1,
1993 or 4 upon inspection by the Division, it is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassification by the Commission, in writing,
WZILL.S /a'%z'

The following scale is used: for rating wastewater treatment facilities: (circle appropriate points
ITEM POINTS
(1) Industrial Pretreatment Units or Industrial Pretreatment Program (see definition No. 33).................................... .................. 4
(2) DESIGN FLOW OF PLANT IN gpd jnot applicable to non -contaminated cooling waters, sludge handling facilities for
water purification plants, totally closed cycle systams(sae definition No. 11), and facilities consisting only of hem
(4)(d) or items (4)(d) and (11)(d)]
0 - 20.000 .......................... .............. .............. .................................... ....................................................
20,001 - 50,000......................................................................
513,001 - 100,DD0.............................................................................:............... ....... ................................ 3
100,001 - 250,000.......................... ................................ .................. ....................................................... 4
250,001 - 500,000..................................................................................................................................5
500, 001 1.000.000....................................................................................................... ..........I..............8
1.000.001 - 2,000,000...........................................................................................................................10
2.000,001 (and up) rate t point addhional for each 200,000 gpd capacity up to a maximum of .................30
Design Flow (gpd)
(3) PRELIMINARY
UNiTSIPROCESSES (see definition No.32)
(a)
Bar Screens...............................................................................................................................................1
or
(b)
Mechanical Screens, Static Screens or Comminuting Devices..........................................................................2
(c)
Grit Removal..............................................................................................................................................1
or
(d)
Mechanical or Aerated Grp Removal.............................................................................................................2
(a)
Flow Measuring Device................................................................................................................................1
or
(1)
Instrumented Flow Measurement................................................................................................................2
(g)
Preaeratlon...............................................................................................................................................2
(h)
Influent Flaw Equalization..........................................................................................................................2
(1)
Grease or Oil Separators - Gravity....................................................... ...........
Mechanical.................................................................................................................................................3
DissolvedAir Flotation................................................................................................................................8
i))
Prechlorinatlon..........................................................................................................................................5
(4) PRIMARYTRE4TMEINTLNTS/PROCESSES
(a)
Septic Tank (see deflnhlon No. 43)............................................................................................................2
(b)
Imhoff Tank.............................................................................................................................................5
(c)
Primary Clarifiers..........................................................................................................................................5
(d)
Settling Ponds or Settling Tanks for inorganic Non -toxic Materials (sludge handling facilities for water
purification plants, sand, gravel, stone, and other mining operations except recrewt onat activities such as gem
or gold mining).................................................................................................................... .....2
...............
(5) SECONLIARYTREATMENT LNnVPROCESSES
(a)
Carbonaceous Stage
(1) Aeratlon-High Purity Oxygen System..............................................................................20
DiffusedAir System.......................................................................................................10
Mechanical Alt System (fixed, floating or rotor)..................................................................a
Separate Sludge Reaeration............................................................................................2
(fl) Tdckling Filter
HighRate.......................................................................................................................7
StandardRate................................................................................................................5
PackedTower......................................................._.......................---..............................,5
(iii) Biological Aerated Filter or Aerated Biological Filter ............................................................1 D
(Iv) Aerated Lagoons ..........................................................................................................10
(v) Rotating Biological Contactors................................................_........_............................10
(VI) Sand Filters -intermittent biological..................................................................................2
Recirculating biological....................................................................................................3
(vii) Stabilization Lagoons....................................................................................................4
(viil) Clarifier..........................................................................................................................5
(ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by
nitrification (see deflnhlon No. 12)(Points for this hem have to be in addition to hems
(5)(a)(1) through (5)(a)(viil),
utilizing the extended aeration process (see definition No.3a)..........................................2
utilizing other than the extended aeration process..............................................�.... ......8
(x) Nutrient additions to enhance 800 removal......................................................................5
(x1) Biological Culture ("Super Bugs`)addhion........................................................................5
(b)
Nitrogenous Stage
(1) Aeration - High Purity Oxygen System......................................................................I.....20
DiffusedAir System.......................................................................................................1 0
Mechanical Air System (11xed, floating or rotor) ........... ..... .,...... ...... .......... I .... ................... 8
Separate Sludge Reaeration............................................................................................3
(11) Trickling Fllter-High Rate...................................................................................................7
StandardRate...............................................................................................................5
PackedTower........................................................................................_...._...................6
(lil) Biological Aerated Filter or Aerated Biological Rher.............................................................10
(iv) Rotating Biological Contactors ...........................
(v) Sand Fitter - Intermittent biological ..................................................................................2
Recirculating biological....................................................................................................3
(vl) Clarifrer...........................................................................................................................6
(6) TERTIARY OR ADVANCED TREATMENT L1NnWROCESSE5
(a)
Activated Carbon Beds -
whixiut carbon regeneration....................................................................................................5
with carbon regeneration....:..................................................................................................1 5
(b)
Powdered or Granular Activaled Carton Feed-
wilhout carbon regeneration..................................................................................................5
with carbon regeneration.....................................................................................................15
(c)
Air strlpping.............................................................................................................................................5
(d)
Denhrhlcatlon Process..............................................................................................................................10
(a)
Elecirodialysis.............................................................................................................................................5
(1)
Foam Separation e.......................................................................................................................................5
(0)
Ion Exchange.............................................................................................................................................5
(h)
Land Application of Treated Effluent (sea definitlon No. 22b) (not applicable for sand, gravel, stone
and other similar mining operations) by high rate Inflllralion..........................................................................4
(1)
Microscssens.............................................. ........................................................ ............................>.......... 5
(1 )
Phosphorous Removal by Biological Processes (See deflnhlon No. 26)................................_......................._20. .-- --
(k)
Polishing- Ponds - without aeration,., ................................................................................................_........2
withaeration....................................................... ......................... ............................... 5

(1)
Post Aeration - cascade.........................................................................................._........................__..._.....a
diffusedor mechanical........................................................................................................2
(m)
Reverse Osmosis........................................................................................................................................5
(n)
Sand or Mixed -Media i`ilters - tow rate..........................................................................................................2
highrate......................................................................5
(a)
Treatment processes for removal of metal or cyanide................._............................................_....__..............1 5
(p)
treatment processes for removal of toxic materials other than metal or cyanide .......... .................................... I s
(7)
SLUDGETREATME3JT
(a)
Sludge Digesllon Tank - Heated (anaerobic)... ........................................... ............... . .. ....................... 10
Aerobic .....:....:
Unheated(anaerobic)......................................................................... ...................'
(b)
Sludge Stabilization (chemical or thermal) ................... :....................................... ................... ..................... .5
(c)
Sludge Drying Beds- Gravity........................................................
VacuumAssisted
(d)
......................................................................................................................................5
Sludge Elutrlation.....................................................................................................................................5
(a)
Sludge Conditioner (chemical or thermal}......................................................................................................5
(i)
Sludge Thickener (gravity) ............................... ............... ...................... ................................. .......................
(g)
Dissolved Air Flotation Unit (not applicable to a unit rated as(3)(I)]_ .......... .. . ...........................................8
(h)
Sludge Gas Utilization (including gas storage)...................::...................._.............................................__....2
(I)
Sludge Holding Tank - Aerated...................................................................................................................5
Non -aerated .................................................................................................................................... .........2
(J)
Sludge Incinerator (not Including activated carbon regeneration) ........ ........................................................ t 0
(k)
Vacuum Flier, Cenirifuge, or Filter Press or other similar dewalering devices...................................................1 0
(8)
RESIDUALS
UTILIZATION/DISPOSAL (inducting incinerated ash)
(a)
Lagoons..................................................................................................................................................2
(b)
Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
orlandfill permit........................................................................................................................................2
(c
Dedicated Landfill(buriai) by the permittee of the wastewater treatment facility...............................................5
{9}
(a)
Chlorination.............................................................................................................................................5
(b)
Dechlorinallon....... ................................ .............................. .....................................................................5
(c)
Ozone......................................................................................................................................................5
(d)
Radiation.................................................................................................................................................5
(10)
CHEMICAL ADDITION SYSTEM(S) ( see definitlon No. 9) (not applicable to chemical additions rated as hem (3)(j),
(5)(a)(xi),
(6)(a), (6)(b). (7)(b). (7)(e), (9a). (9)(b) or (9)(c) 5 points each:
List...................................................................
................................................................ 5
......................................................................................................................4............
..................................................................................................................................5
(11)
................................................. .......... ........................................................................... 5
MISCELLANEOUS UNFrWAOCESSES
(a)
Holding Ponds. 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
for domestic wastewater............................................................................................................................4
(b)
Effluent Flaw 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..................................................................
(a)
Stand -By Power Supply......................................................... ...................3
(f)
Thermal Pollution Control Device................................................................................................................3
TOTALPOINTS..........................................................................
Ci AMIFICATICN
ClassI .................. ................................................................................ I........ 5-25 Points
Class11.........................................................................................................26-50 Points
(AM III........................................................................................................61.65 Points
ClassIV .......................................................................................................66-Up Points
Facilities having a rating of one through four points, Inclusive, do not require a certified operator.
Facilities having an activated sludge process will be assigned a minimum ctasslf;catlon of Class II.
Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class II.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class Ill.
M04 DEFINITIONS
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physlcal/chemica[ method for reducing soluble organic material from wastewater effluent; The column -type beds used in this
method will have a flow rate varying from two to aight gallons per minute par square foot and may be either upflow or downfiow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant site;
(2) Aerated Lagoons. A basin in which all solids are maintained In suspension and by which biological oxidation or organic matter Is reduced thlnugh artificially
accelerated transfer of oxygen on a ilcw-through basis;
(3) Aeration. A process of bringing about Intimate contact between air or high purfty oxygen In a liquid by spraying, aghatton or diffusion;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agriculturally managed site. Any site on which a crop is produced, managed, and harvested (Crop Includes grasses, grains, trees, etc.);
(6) Air Stripping. A process by which the ammonium Ion is first converted to dissolved ammonia (pH adjustment) wish the ammonia then released to the
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene, toluene, and xylem;
(a) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the
absorbed impurities•
(7) Carbonaceous Stage. A stage of wastewater treatment designed to achieve "secondary" effluent I€mhs;
(8) Centrifuge. A mechanical device in which centrifugal force is used to separate solids from liquids or to separate liquids of different densi«as;
(9) Chemical Addition Systems- The addition of chomlcal(s) to wastewater at an application point for purposes of Improving solids removal, pH adjustment,
alkalinhy control, etc.; the capability to experiment with different chemicals and different appilcallon points to achieve a specific result will be considered one
,ystem; the capability to add chemicals) to dual units will be rated as one system; capability to add a chemical at a different application points for different
urposes will result in the systems being rated as separate systems;
110) Chemical Sludge Conditioning. The addition of a chemical compound such as 11me, ferric chlorlde, or a polymer to wet sludge to coalesce the mass prior to
Its application to a dewatering device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks for rx)ntalnment of wastewater containing inorganic, non -toxic materials from sand, gravel.
crushed stone or other similar operations. Such systems shall carry a maximum of two points regardless ofpumplrng facilitles or any other appurtenances-
(12) Combined Removal of Carbonaceous BCD and Nitrogenous Removal by Nitrffication- A single stage system required to achieve permit effluent limits on BOD
and ammonia nitrogen within the same biological reactor.
(13) Dechlorination. The partial or complete reduction of residual chlorine in a liquid by any chemical or physical process;
(14) DenitrHication Process. The conversion of nitrate -nitrogen to nitrogen gas;

(15) Electroj;afysis. Process for removing ionized safts from water through the use of Ion -selective ion-exc4ange membranes;
(16) Filler Press, A process operated machanica€fy for partially dewate,irg sledge;
(17) Foam Separation. The planned frothing of wastewater or wastewater effluent as a means of removing excessive amounts of detergent materials through
the introduction of air in the form of fine bubbles; also called foam fractionation;
(18) Grit Removal. The process of removing grit and other heavy mineral matter from wastewater;
(19) Imhoff Tank. A deep two story wastewater tank consisting of an upper sadimerRation chamber and a lower sludge digestion chamber.
(20) Instrumented Flow Measurement. A device which Indicates and records rate of flow;
(21) ion Exchange- A chemical process in which Ions from two different molecules are exchanged;
(22) Land application.
(a) Sludge Disposal. A final sludge disposal method by which wet sludge may be applied to land either by spraying on the surface or by subsurface injection
(I,e., chisel plow); (not applicable for types of siudge described In (11) of this Rule];
(b) Treated Elfluent. The process of spraying treated wastewater onto a land area or other methods of application of wastewater onto a land area as a
moans of final disposal or treatment;
(23) Microscreen. A low speed, caontinuously back -washed, rotating drum filter operating under gravity conditions as a polishing method for removing
suspended solids from effluer4;
(24) Nitrification Process- The biochemical conversion of unoxid;zed nitrogen (ammonia and organic nitrogen) to oxidized nitrogen (usually nitrate);
(25) Nitrogenous Stage. A separate stage of wastewater treatment designed for the specific purpose of converting ammonia nitrogen to nitrate nitrogen;
(26) Phosphate Removal, Biological. The removal of phosphorus from wastewater by an oxiclanoxic process designed to enhance luxury uptake of phosphorus
by the microorganisms;
(27) Polishing Pond. A holding pond following secondary treatment with suff€clent detention time to allow settling of finely suspended solids;
(28) Post Aeration, Aeration following conventional secondary treatment units to Increase effluent D.O. or for any other purpose;
(29) Post Aeration. (Cascade) A polishing method by which dissolved oxygen is added to the effluent by a nonmechanicai, gravity means of flowing down a
Was of steps or weirs; The flow occurring across the steps or weirs moves in a lairly thin layer and the operation of the cascade requires no operator
adjustment; thus, zero points are assigned even though this Is an essential step to meeting the limits of the discharge permit;
(30) Powdered to Granular Activated Carbon Feed. A blophyslcal carbon process that utilizes biological activity and Organic absorption by using powdered or
granular activated carbon; Virgin or regenerated carbon Is lard controlled into the system;
(31) Preaeralion. A tank constructed to provide aeration prior to primary treatment;
(32) Preliminary units. Unit operations in the treatment process, such as screening and comminution, that prepare the liquor for subsequent major operations;
(33) Industrial Pretrsatmenl.
(a) Pre-treatment Unit, Industrial. The condttioning of a waste at Its source before discharge, to remove or to neutralize substances injurious to sowers and
treatment processes or to effect a partial reduction In load on the treatment process which is operated by the same governing body as the wastewater
treatment plant being rated;
b) Pre-treatment Program, industrial - must be a State or EPA required program to receive points on the rating sheet;
(34) Primary Glorifiers. The first settling tanks through which wastewater is passed in a treatment works for the purpose of removing settleable andr suspended
solids and 130D which Is associated with the solids;
(35) Pumps. All influent, effluent and In -plant pumps;
(36) Radiation, Disinfection or sterilization process utilizing devices em'ming ultraviolet or gamma rays;
(37) Reverse 0smosls. A treatment process In which a heavy contaminated liquid Is pressurized through a membrane forming nearly pure liquid free from
suspended solids;
(38) Rotating Biological Contractors. A fixed biological growth process in which wastewater flows through tanks in which a series of partiaify submerged circular
surfaces are rotated;
(39) Sand Filters:
(a) Intermittent Biological. Fhration of effluent following septic tanks, lagoons, or some other treatment process in which further blodecomposttlon is
expected to produce desired effluents; Hydraulic loading rates on these filters are computed in gpdrac and have a resulting low gpmisf (less than one);
b) Recircutaling biologicat - the sama type of sand filter as defined in Subparagraph (39) (a) of this Rule with the added capabMir to recycle effluent back
through the sand fifer;
(40) Sand or Mixed-Madla Filters. A poilshing process by which effluent limits are achieved through a further reduction of suspended solids;
(a) low rate — gravity, hydraulically loaded filter with loading rates In the one to three gpmdsf range;
(b) high rate -- a pressure, hydraulically loaded filter with loading rates in the five gprrdsf range; At any rate, the loading rate will exceed three gprNsf;
(41) Secondary Clarifiers. A tank which follows the biological unit of treatment plant and which has the purpose of removing sludges associated with the
biological treatment units;
(42) Separate Sludge Reaeration. A part of the contact stabilization process where the activated sludge is transferred to a tank and aerated before returning it
to the contact basin;
(43) Septic Tank. A single -story settling tank In which settled sludge Is In contact with the wastewater flowing through the tank; shalt not be applicable for
septic lank systems serving single family residences having capacity of 2,000 gallons or less which discharge to a nitrification field;
(44) Sludge Digestion. The process by which organic or volatile matter and sludge is gasified, liquefied, mineralized or converted into more stable organic matter
through Iris activity of living organisms, which Includes aerated holding tanks;
(45) Sludge Drying Beds. An area comprising natural or artificial layers of porous materials upon which digested sewage sludge Is dried by drainage and
evaporation;
(46) Sludge Elutriatlon- A process of sludge conditioning in which certain conslituents are removed by succassve washings with fresh water or plant effluent;
(47) Sludge Gas U lNzation. The process of using sewage gas for the purpose of healing buildings, driving engirtes, etc.;
(4-5) Sludge Holding Tank (Aerated and Nonaerated). A tank utilized for small wastewater treatment plants not containing a digester In which sludge may be
kept fresh, and supernatant withdrawn prior to a drying method (d,e. sludge drying beds); This may be done by adding a small amount of air simply to keep the
sludge fresh, but not necessarily an amount that would be required to achieve stabilization of organic matter. A nonaeraaed tank would simply be used to
decant sludge prior to dawalering and would not allow long perlods (several days of detention) without resulting odor problems-,
(49) Siudgo incinerators, A furnace designed to bum sludge and to remove all moisture and combustible materials and reduce the sludge to a sterile ash;
(50) Sludge Sta lllzalion (Chemicai or Thermal). A process to make treated sludge less odorous and putrescibie, and to reduce the pathogenic organism
content; This may be done by pH adjustment, chiodne dosing, or by heat treatment;
(51) Sludge Thickener. A type of sedimentatlon tank In which the sludge Is permitted to settle and thicken through agitation and gravity;
(52) Stabilization lagoon A type of oxidation lagoon In which biological oxidation of organic matter is eftacted by natural transfer of oxygen to the water from
air (not a polishing pond);
(53) Stand -By Power Supply, On site or portable electrical generating equipment;
(54) Static Screens. A stationary screen designed to remove solids, including non -biodegradable particulate (fdoatable solids, suspended solids and BOD
reduction) from municipal and Industrial wastewater treatment systems;
(5-3) Tertiary Treatment. A. stage of treatment following secondary which is primarily for the purpose of effluent polishing; A settling lagoon or sand or coal fitter
might be employed for this purpose;
(56) Thermal Pollullon Control Device. A device providing for the transfer of heat from a fluid flowing In tubes to another fluid outside the tubes, or vice versa;
or other means of roguiating liquid temperatures;
(57) Thermal Sludge Conditioner. A conditioning process by which heat Is added for a protracted perlod of time to Improve the dewaterablifty of sludge by the
solubilizing and hydraultzing of the smaller and more highly hydrated sludge particles;
(58) Toxic Materials. Those wastes or combinations of wastes, Including disease -causing agents which attar discharge and upon exposure, Ingestion. Inhalation
or assimilation into arty organism, either dtroc€ly from the environment or indirectly by igestlon through food chalna, will cause death, disease, behavioral
abnormalities, cancer, genetic mutations, pitysiologfcai malfunctions (including malfunctions In reproduction) or physical deformations, in such organisms or their
offspring; Toxic malerlais Include, by way of Illustration and not limitatlon: lead, cadmium, chromium, mercury, vanadium, arsenic, zinc, ortho-nitro•chlorobenzene
(ONCB), polychlorinated blpheny€s (PCBs) and dichlorodiphenyl trichloroelhane (DDT); and any other materials that have or may hereafter be determined to have
toxic propertles-
(59) Trickling Filter. A biological treatment unit consisting of a material such as broken stone or rock over which wastewater is dislnbvted; A high rate trickling
Mar Is one which operated at between 10 and 30 mgd per acre. A low rale trickling Viler is one which is designed to operate at one to four mgd per acre;
(60) Trickling Flfter (Packed Tower). A plug flow type of operation In which wastewater flows down through successive layers of media or fiftrate material; Organic
material is removed continually by the aoWe biotogical fixed growth in each successive layer. This method may produce "secondary' quality effluent, or maybe
adapted to produce a nitrified effluent;
(61) Vacuum Filter, Centrifuges, or Fitter Presses. Devices which are designad to remove excess water from either digested or undigested sludge prior to disposat
or further treatment.