WQ0000193_Final Permit_19971027

a State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
October 27, 1997
J. David Edwards, Vice President
B.H.I. Utilities, Inc.
Post Office Box 3069
Bald Head Island, North Carolina 28461
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Subject: Permit No. WQ0000193
B.H.I. Utilities, Inc.
Wastewater Treatment Facility with Disposal
by Infiltration Lagoon
Brunswick County
Dear Mr. Edwards:
In accordance with the renewal request received August 7, 1997, we are forwarding herewith
Permit No. WQ0000193, dated October 27, 1997, to B.H.I. Utilities, Inc. for the continued operation of
the subject wastewater treatment facility with wastewater disposal by infiltration lagoon.
This permit shall be effective from the date of issuance until September 30, 2002, shall void Permit
No. WQ0000193 issued August 21, 1995, 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.
If you need additional information concerning this matter, please contact Mr. Michael D. Allen at
[phone] extension 547.
Sincerel ,
�A. Preston Howard, Jr., P.E.
cc: Brunswick County Health Department
Wilmington Regional Office, Water Quality Section
Wilmington 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

a
NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
INFILTRATION LAGOON 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
B.H.I. Utilities, Inc.
Brunswick County
FOR THE
the continued operation of a 200,000 GPD wastewater treatment facility with disposal by infiltration
lagoon or spray irrigation (reuse) system (which is permitted under WQ0010834).
The facility consists of the Timber Creek WWTP which is used as flow equalization, approximately 827
linear feet of 8 -inch gravity sewer, an 87 GPM pump station with dual pumps, high water alarms and
approximately 4,000 linear feet of 4 -inch force main to pump wastewater from the abandoned Central
WWTP to the influent pump station located near the Timber Creek WWTP, approximately 4,000 linear
feet of 6 -inch force main, a 700 GPM influent pump station with dual pumps, high water alarms, a 25 kW
stand-by generator and approximately 3,100 linear feet of 10 -inch force main, a 200,000 GPD wastewater
treatment facility consisting of a flow meter, a manually cleaned bar screen, flow splitter box, a sequential
batch reactor wastewater treatment facility with dual 155,000 gallon aeration and clarifier basins with three
(3) 25 HP blowers, two (2) 5 HP mixers, and three (3) 2 HP sludge pumps, a 196,400 gallon sludge
holding tank with a 30 HP aqua -jet aerator and a 2 HP transfer pump, two (2) 40 ft2 traveling bridge
filters, a 68,825 gallon post equalization and holding basin with a 2 HP mechanical floating aerator and
three (3) 3 HP transfer pumps, gas chlorination with a 13,000 gallon chlorine contact tank, approximately
3,000 linear feet of force main to pump the effluent to the infiltration lagoon manhole, and a 14 acre
infiltration lagoon; to serve
Bald Head Island, with no discharge of wastes to the surface waters, pursuant to the renewal request
received August 7, 1997, 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 September 30, 2002, shall void Permit
No. WQ0000193 issued August 21, 1995, and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARDS
In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective actions, including those
actions that may be required by the Division of Water Quality (Division), such as the
construction of additional or replacement wastewater treatment or disposal facilities.

2. This permit shall become voidable if the soils fail to adequately assimilate 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. The ponding of wastewater on the surface of the distribution field when the dosing
cycle commences shall be considered as evidence of failure of the soils to adequately
assimilate the wastewater. Additionally, such failure shall be interpreted as a violation of
this permit condition.
3. The residuals generated from these treatment facilities must be disposed in accordance with
General Statute 143-215.1 and in a manner approved by the Division.
4. Adequate measures shall be taken to divert stormwater from the high rate infiltration area
and to prevent wastewater runoff.
5. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
6. 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.
II. OPERATION AND MAINTENANCE REQUIREMENTS
1. The facilities shall be properly maintained and operated at all times.
2. Upon classification of the facility by the Water Pollution Control System Operator
Certification Commission (WPCSOCC), 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
WPCSOCC. The Permittee must also employ a certified back-up operator of the
appropriate type and grade to comply with the conditions of 15A NCAC 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 15A NCAC 8A .0202.
3. The facilities shall be effectively maintained and operated as a non -discharge system to
prevent the discharge of any wastewater outside of the infiltration lagoon, which result
from the operation of this facility.
4. The screenings removed from the wastewater treatment plant shall be properly disposed in
a sanitary landfill or by other means which have been approved by this Division.
5. Freeboard in the infiltration lagoon shall not be less than two feet at any time.
6. An automatically activated standby power source shall be on site and operational at all
times. If a generator is employed as an alternate power supply, it shall be tested weekly by
interrupting the primary power source.
7. The flow measurement device shall be calibrated annually by a representative of a firm
which is routinely engaged in the calibration of flow measurement devices. Records of this
calibration, including all information pertinent to the calibration, shall be available during
any inspection by Division staff.
8. Diffusers shall be cleaned as needed to ensure that adequate aeration is provided. Records
of this maintenance shall be maintained by the permittee.
2

III
9. The Permittee shall provide for the pump station and force main the following items:
a. Pump on/off elevations located so that 2-8 pumping cycles may be achieved per hour in
the pump station,
b. An air relief valve located at all high points along the force main,
c. A screened vent for the wet well,
d. Fillets located in the wet well at the intersection of the flooring and sidewalls,
e. Three feet of cover (minimum) over the force main or the use of ferrous material where
three feet cannot be maintained,
f. Sufficient devices which will protect the pump station from vandals, and
g. Flood protection if the pump station is located below the 100 -year flood elevation.
MONITORING AND REPORTING REQUIREMENTS
Any monitoring deemed necessary by the Division to insure surface and ground water
protection will be established and an acceptable sampling reporting schedule shall be
followed.
2. As an indicator of proper operation and maintenance, the facility shall produce an effluent
in compliance with the following limitations:
Parameter Monthly Averagea Daily Maximums
Flow 200,000 GPD
BODS (5 -day, 20°C) 10 mg/l
NH3 as N 4 mg/1
TSS 20 mg/1
Fecal Coliform 14 per 100 mlb 43 per 100 ml
a Monthly averages for all but fecal coliform shall be the arithmetic mean of all samples
collected during the reporting period.
b Monthly average for fecal coliform shall be the geometric mean of all samples collected
during the reporting period.
c Daily maximum shall be the maximum value of all samples collected during the reporting
period.
The effluent from the subject facilities shall be monitored, by the Permittee, at the point
prior to discharge to the infiltration lagoon for the following parameters:
Parameter Sampling Point Sampling Frequency Type of Sample
Flow
BODS (5 -day, 20°C)
NH3 as N
TSS
Fecal Coliform
Settleable Matter
Residual Chlorine
NO3
TDS
TOC
Chloride
Influent or Effluent
Continuous
Recording
Effluent
*2/Month
Composite
Effluent
*2/Month
Composite
Effluent
*2/Month
Composite
Effluent of first pond
*2/Month
Grab
Effluent
Daily
Grab
Effluent
Daily
Grab
Effluent
**Triannually
Grab
Effluent
**Triannually
Grab
Effluent
Triannually
Grab
Effluent
**Triannually
Grab

The effluent pH shall not be less than 6.0 standard units nor greater than 9.0 standard
units.
* 2/Month sampling frequency only during the months of April through October. During
the remainder of the year, these parameters shall be monitored monthly.
** Triannually sampling shall be conducted during March, July, and November.
If Groundwater sampling indicates or predicts problems with compliance with of the
Groundwater Standards, this permit will be modified to include additional and/or more
restrictive limitations.
3. Three (3) copies of all effluent monitoring data (as specified in condition III 2) on Form
NDMR-1 shall be submitted on or before the last day of April, August, and December. All
information shall be submitted to the following address:
NC Division of Water Quality
Water Quality Section
Non -Discharge Compliance/Enforcement Unit
Post Office Box 29535
Raleigh, North Carolina 27626-0535
4. A record shall be maintained of all residuals removed from this facility. The record shall
include the name of the hauler, the permit authorizing the disposal or a letter from a
municipality agreeing to accept the residuals, the date the residuals were hauled, and the
volume of residuals removed.
5. A maintenance log shall be maintained at this facility including, but not limited to, the
following items:
a. Daily sampling results including residual chlorine, settleable matter, and dissolved
oxygen in the aeration basin and at the clarifier weir;
b. Visual observations of the plant and plant site;
c. Record of preventative maintenance (changing of filters, adjusting belt tensions, alarm
testing, diffuser inspections and cleanings, etc.);
d. Date of calibration of flow measurement device; and
e. Date and results of power interruption testing on alternate power supply;
6. Noncompliance Notification:
The Permittee shall report by telephone to the Wilmington 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 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 renders the facility.
incapable of adequate wastewater treatment, such as mechanical or electrical failures of
pumps, aerators, compressors, etc.;
c. Any failure of a pumping station, sewer line, or treatment facility resulting in a by-pass
of all or any portion of the influent to such station or facility; or

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 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.
IV. GROUNDWATER REQUIREMENTS
1. Monitor wells MW -1, MW -2, and MW -3 shall be sampled March, July, and November for
the following parameters:
Water Level pH
Chloride Total Dissolved Solids (TDS)
Fecal Coliforms Total Organic Compounds (TOC)
Nitrate (NO3) Total Ammonia (as N)
Total Phosphorous
Volatile Organic Compounds - In November only using one of the following:
(A) Standard Method 6230D, PQL at 0.5 ug/L or less
(B) Standard Method 6210D, PQL at 0.5 ug/L or less
(C) EPA Method 8021, Low Concentration, PQL at 0.5 ug/L or less
(D) EPA Method 8260, Low Concentration, PQL at 0.5 ug/L or less
(E) Another method with prior approval by the Groundwater Section Chief
Any method used must meet the following qualifications:
(1) A laboratory must be DWQ certified to run any method used.
(2) The method used must, at a minimum, include all the constituents listed in
Table VIII of Standard Method 6230D.
(3) The method used must provided a PQL at 0.5 ug/L or less which must be
supported by laboratory proficiency studies as required by the DWQ
Laboratory Certification Unit. Any constituents detected above the MDL but
below the PQL at 0.5 ug/L must be qualified (estimated) and reported.
If any volatile organic compounds are detected by the methods listed, then the Wilmington
Regional Office Groundwater Supervisor, telephone number [phone], must be
contacted immediately for further instructions regarding any additional follow-up analyses
required. The results of all initial and follow-up analyses must be submitted
simultaneously.
The measurement of water levels must be made prior to sampling for the remaining
parameters. The depth to water in each well shall be measured from the surveyed point on
the top of the casing.
The measuring points (top of well casing) of all monitoring wells shall be surveyed to
provide the relative elevation of the measuring point for each monitoring well.
If TOC concentrations greater than 10 mg/l are detected in any downgradient monitoring
well, additional sampling and analysis must be conducted to identify the individual
constituents comprising this TOC concentration. If the TOC concentration as measured in
the background monitor well exceeds 10 mg/l, this concentration will be taken to represent
the naturally occurring TOC concentration. Any exceedances of this naturally occurring
TOC concentration in the downgradient wells shall be subject to the additional sampling
and analysis as described above.

The results of the sampling and analysis must be received on Form GW -59 (Groundwater
Quality Monitoring: Compliance Report Form) by the Groundwater Section, Permits and
Compliance Unit, P.O. Box 29578 Raleigh, N.C. 27626-0578 on or before the last
working day of the month following the sampling month.
2. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be provided.
3. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in
15A NCAC 2L, Groundwater Classifications 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 immediate 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.
V. INSPECTIONS
1. Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
2. The Permittee or his designee shall inspect the wastewater treatment and disposal facilities
to prevent malfunctions and deterioration, operator errors and discharges which may cause
or lead to the release of wastes to the environment, a threat to human health, or a nuisance.
The Permittee shall 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 a
period of three years from the date of the inspection and shall be made available to the
Division or other permitting authority, upon request.
3. 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 disposal site or facility 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 of groundwater,
surface water, or leachate.
VI. GENERAL CONDITIONS
This permit shall become voidable unless the facilities are constructed in accordance with
the conditions of this permit, the approved plans and 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.
0

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 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 subject wastewater treatment and disposal facilities shall be connected to an operational
publicly owned wastewater collection system within 180 days of its availability to the
subject facilities, if the subject wastewater treatment or disposal facilities are in
noncompliance with the terms and conditions of this non -discharge permit or the governing
statutes or regulations. Prior to the initiation of these connection activities, appropriate
approval must be received from this Division.
5. The annual administering and compliance fee must be paid by the Permittee within thirty
(30) days after being billed by the Division. Failure to pay the fee accordingly may cause
the Division to initiate action to revoke this permit as specified by 15A NCAC 2H .0205
(c)(4).
6. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division in accordance with North Carolina
General Statute 143-215.6A to 143-215.6C.
7. 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.
8. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of this project.
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 twenty-seventh day of October, 1997
NORTH C OLINA ENVIRONMENTAL MANAGEMENT COMMISSION
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0000193
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RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
lame of Facility:7i-a-t7 Kt=moi �c,��rN� GiT�Lijl> ,4- syr
Owner or Contact Person:,Ce i,A a r]�intcny�C�
Mailing Address: F -c ',l l
County: 2ru<il,e-4, Telephone: 4/ti`7 - 73��
Present Classification: New Facility Existing Facility
NPDES Per. No. NC00 Nondisc. Per. No.WQ /4 :I— Health Dept.Per No.
Rated by: Telephone: Date:
Reviewed by: Health Dept. Telephone:
Regional Office Telephone:
Central Office Telephone:
ORC:Ke L �� �:�� v. c Grade: i J Telephone:
Check Classification (s): Subsurface Sp Irrigation Land Application
Wastewater Classification: (Circle One) 1 IIIII IV Total Points:
u :: ►I ' :.•t. : ► • : • � ►11:.� �. Ii...►1 u. �.I:T:Z�: ► ►Ih ::1 � I► • � 1:: �: .• �1 � ►�:r:1�► ��4?
Ler• : 1: :►1 aea 1 :ler e, i..: .► � � ' 1. :►� 1:,.. Ler i ►. � •. e. JI. :►.
:► :: 11 • I: : Imo► ► :: � J i:.�u :� �.. �►
SUBSURFACE C A-c-&FiCATl0N
(check all units that apply)
1. septic tanks
2. pump tanks
3. siphon or pump -dosing systems
sand filters
5. grease trapAnterceptor
6. oil/wafer separators
7. gravity subsurface treatment and 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 trap)rinterceptor
B.
oil/water separators
9.
disinfection
10.
chemical addition for nutrient/algae control
11.
spray irrigation of wastewater
In addition to the above classifications, pretreatment of wastewater in excess of these components shell
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATIONIRESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class I classification, 11II1ess 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 if 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 fitters, disinfection
and direct discharge;
3. Lagoon Systems consisting only of preliminary treatment, lagooris, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed-loop Recycle Systems;
5. Groundwater Remediation Systems consisting only of oil/waler separators, pumps, air -stripping, carbon adsorption, disinfection
and dispo .-J;
6. Aquaculture operations with discharge to surface waters;
Water Plant sludge handling and back -wash water treatment;
d. Seafood processing consisting of screening and disposal.
9. Single-family discharging systems, with the exception of Aerobic Treatment Units, will be classified 0 permitted after July 1,
1993 or if upon inspection by the Division, h is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or recta ssHication by the Commission, in writing.

The following scale is used for rating wastewater treatment facilities: (circle appropriate points)—
ITEM POINTS
(1) Industrial Pretreatmers Units or Industrial Pretreatment Program (see de!Inhion No. 33) ...................................................4
(2) DESIGN
FLOW OF PLANT IN gpd [not applicable to non-contarrhated cooling waters, sludge handling facilities for
water purification plants, totally closed cycle systems(see definition No. 11), and facilities consisting only of hem
(4)(d) or
Items (4)(d) and (11)(d))
0 - 20,000........................................................................................................................»..»....»............1
20.001 - 50,000.......................................................................»......................»................_....._..».....2
50.001 - 100.000...........................................»...........................»»».................. » .». ..... »......3
100,001 - 250,000 ......................................... ................................... .................................. »»............ (i)
250,001 - 500,000....» ....................... ................................ ............. ......................... ».......................
500,001 - 1.000,000 ............................................... »........................................... .. ... ......................... 5
1.000,001 - 2,000.000..........................................................................................»................».»..........10
2,000,001 (and up) rate 1 point additional for each 200,000 gpd capacity up to a maximum of ....... . �30
Design Flow (gpd)
(3) PRELIMINARY UNUSJPROCESSES (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 Grit Removal.............................................................................................................2
(e)
Flow Measuring Device..........................................................................................».......»....»..............»....1
(t)
or
Instrumented Flow Measurement..............................................................................................................
(g)
Preaeratlon............................................................................................................................................
(h)
Influent Flow Equalization.........................................................................................................................
(i)
Grease or Oil Separators - Gravity ................................................. ...................._..._....„..._................
Mechanical....................................................................».................................................._....».».....».»..3
Dissolved Air Flotation..............................................................................................................................A
i1)
Prechlorinatlon......................................... ».„............................................................................................
(4) PRNARYTREATMENT LINITSrPRDCESSES
(a)
Septic Tank (see definition No. 43)....„„....„.....„...............................................................................».....2
(b)
Imhoff Tank......................................................................................................»................................»...5
(c)
Primary Clarillere........................................................................................................................................5
(d)
Settling Ponds or Settling Tanks for Inorganic Non-toxic Materials (sludge handling facilities for water
purification plants, sand, gravel, cions, and other mining operations except recreational activities such as gem
orgold mining)........................................................................................................................................2
(5) SECONDARY TREATMENT LNRSrPROCESSES
(a)
Carbonaceous Stage
(1) Aeratlon-Mgh Purley Oxygen System .......... .............................. ..............................
DiffusedAir System...................................................................................._............... Q93
Mechanical Air System (fixed, floating or rotor) ..... ..._...„.»_...»..._. _.„_.. �..5
Separate Sludge Reaerallon........................................................... ...............3
.4”.
(It) Trkiding Filer
HighRate .......................... »....... ».................................................................................. 7
StandardRate ............ ..................... »........»..............................................»...............5
PackedTower................................................................................................................5
(iii) Biological Aerated Fitter or Aerated Biological Filter»„._„„.»».»_».»..»._».»__.„»„.__._.10
(Iv) Aerated Lagoons.....................................................................................»...»..............10
(v) Rotating Biological Contactors......................................................................................10
(vi) Sand Filters -intermittent biological ....................... ............................. _.......................... .2
Recirculating biological...............................................................................»...................3
(vii) Stabilization Lagoons...........................................................................».......................5
(viii) Clarifier.........................................................................................:..............................�
(Ix) Single stage system for combined carbonaceous removal of BOD and nitrogenous removal by
nitrification (see definition No. 12)(Points for this hem have to be in addition to hems
(5)(a)(1) through (5)(a)(viil),
utllazing the extended aeration process (see definition No.3a).......................................
utilizing other than the extended aeration process .................................
(x) Nutrient additions to enhance BOD removal..............................................................».....5
(x1) Biological Culture ('Super Bugs')addhion.......................................................................5
(b)
Nitrogenous Stage
(1) Aeration - High Purity Oxygen System ............................................. ..... „..... ..... ..20
DiffusedAir System.................................................................................»..».»......».....10,
Mechanical Air System (fixed, floating or rotor)_......_....,._...»..._».»..._......_..._...»...5
Separate Sludge Reasralion.........................................».....................„..........................3
(II) Trickling Filter -High Rate............................_.....................................,,..............................7
Standard Rate...............................................................................................................5
PackedTower............................................................ »»..................... _......................... 5
(Iii) Biological Aerated Ther or Aerated Biological Filter --------- ------------------------------ 10
(Iv) Rotating Biological Contactors..............................................»......................................10
(v) Sand Filter - Intermittent blologlcal.....................................................................»...........2
Recirculating biological...........................„.............................................................».....».3
(VII) Clarifier .................................................. .... ......................................... .............. »......... 5
(6) TERTIARY OR ADVANCED TREATMENT U NiTSPR OiCESSES
(a)
Activated Carbon Beds -
without carbon regeneration............................................................ »..... ... ...-......................
withcarbon regeneration ........................................... ................................ »..........»..15
(b)
Powdered or Granular Activated Carbon Feed
without carbon regeneration ................ .................... .................. .... ...... ...»...... .................
-with carbon regeneration.....................................».......»..................»........»..........»..........15
(c)
Air stripping ................................................. »....... I ...................................................... ...... .................. 5
(d)
DenhrtficationProcess ... »........................................... ................ ....................................................... .... 10
(e)
Electrodialysis ............................................. »........................................................ »............................. ......5
(f)
Foam Separation.............................................................................._.......................................................5
(g)
Ion Exchange.........................................................................................................................„..................5
L
(h)
Land Application of Treated Effluent (see definition No. 22b) (not applicable for sand, gravel, stone
(I)
and other similar mining operations) by high rate Infiltration ................................................................... A ��
Microscreens.............................................................................................................................................5
())
Phosphorous Removal by Biological Processes (See definition No. 26) ........................................................20
(k)
Polishing Ponds without aeration ............... _................... »...................................................................... 2
with aeration ................... »......... .............................. .... ............................................ 5

(1)
N•
Post Aeration - cascade...........................................................................................................................
diffused or mechanical.....................................................................................................42)
(m)
Reverse Osmosis........................................................................................................................................5
(n)
Sand or Mixed-Media Fifters - low rate ............ ................... ......................... ........................................
highrate.....................................................................5
(o)
Treatmery processes for removal of metal or cyanide................................................................... »...........
(p )
treatment processes for removal of toxic materials other than metal or cyanide...__._ .»».__.» »_ _.»_._.15
t (7) SLLCGE
TREATMENT
(a)
Sludge Digestion Tank - Heated (anaerobic).................................. _......................... _.............. ..»........ ..... 10
Aerobic ................................................................»...................................................................5
Unheated (anaerobic)...........................................................................................................»......._.........
(b)
Sludge Stabilization (chemical or thermal)................................:................................................................
5
(c )
Sludge Drying Beds - Gravity.................................................... ....... ................................ ....»_..................
2
Vacuum Assisted......................................................................................................................................5
(d)
Sludge Elulriation.......................................................................................................................»............5
(e)
Sludge Conditioner (chemical or thermal) ......... ...................... _...................... ........................ ....................
(1)
Sludge Thickener (gravity).........................................................................................................................5
(g)
Dissolved Air Flotation Unit (not applicable to a unh rated as(3)(1)).............................................................6
(h)
Sludge Gas Utilization (including gas storage) ................... .................... .................. ..........................
(1)
Sludge Holding Tank - Aerated.......................................... _............................................. ......................
.
Non-aerated.............................................................................................................................................2
(J)
Sludge Incinerator (not Including activated carbon regeneration)................................................................10
(k)
Vacuum Filter, Centrifuge, or Fitter Press or other similar dewatering devices..»»»»....__......._ ..__...».._.......10
(8) RESIDUALS UTILIZATIOWDISPOSAL (vtduding 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
orlandllU perrut......................................................................................................................................
(c)
Dedicated Landfill(burial) by the permittee of the wastewater treatment facility._......................_..............._..3
(9)
^
(a)
Chlorination................................... _.»......................................................................................... .........
�,y
(b)
Dechiorinalion..........................................................................................................................................5
(c)
Ozone..................................................................»..................................................................................5
(d)
Radiation........................................................................................................................................».......5
(1 0) CHEMICAL ADDITION SYSTEM(S) ( see definition No. 6) [not applicable to chemical additions rated as hem (3)0),
(5)(a)(xi), (6)(a), (6)(b). (7)(b), (7)(9), (9a). (9)(b) or (D)(c) 6 points each:
List......................................................................................................................................5
.....................................................................................................».....».....................5
....................................................................................................................................5
.....................................................................................................................................5
(1 1) MISCELLANEOUS UNITSrPROCESSFF.S
(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
fordomestic wastewater...........................................................................................................................A
(b)
Effluent Flow Equalization (not applicable to storage basins which are Inherent In land application systems)......2
(c)
Stage Discharge (not applicable to storage basins inherent in land application ttystems).._._ ......__........._.
(d)
Pumps...................................................................................................................................................
(6)
Stand-By Power Supply................................»........................................................................................
(1)
Thermal Pollutbn Control Device ............ »....................... ...... _................................ ...................................
TOTAL POINTS..........................................................................
CLASSFICATIM
Class1......................................................................:....................................5.25 Points
Class 11.........................................................................................................26.50 Points
class111........................................................................................................51-65 Points
ClassN.......................................................................................................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 ctasshlcation of Class 11.
Facil tles having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class IL
Facilities having Irsaiment processes for the biological removal of phosphorus will be assigned a minimum classlrication of Class III.
-------------------------------------------------------------
.0004 DEFINITIONS
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physical/chemical 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 eight gallons per minute per square foot and may be either upfiow or downflow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant she;
(2) Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter Is reduced through artificially
accelerated transfer of oxygen on a flow-through basis;
(3) Aeration. A process o1 bringing about intimate contact between air or high purity oxygen in a liquid by spraying, agitation or diffusion;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 16 hours.
(4) Agriculturally managed she. Any she on which a crop Is produced, managed, and harvested (Crop includes grasses, grains, trees, etc.);
(5) Air Stripping. A process by which the ammonium Ion Is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene, toluene, and xylene;
(6) 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 Umhs;
(8) Centrifuge. A mechanical device In which centrifugal force Is used to separate solids from liquids or to separate liquids of drfferent denstlas;
(9) Chemical Addition Systems- The addition of chemical(s) to wastewater at an application point for purposes of Improving solids removal, pH adjustment,
alkalinity control, etc.; the capability to experiment with different chemicals and dtfferent application points to achieve a specf5c resuh will be considered 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 different
purposes will resuh in the systems being rated as separate systems;
(10) Chemical Sludge Condhioning. The addition of a chemical compound such as lime, ferric chloride, or a polymer to wet sludge to coalesce the mass prior to
his application to a dewatering device;
(11) Closed Cycle Systems. Use of holding ponds or holding tanks for containment 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 of pumping facilities or any other appurtenances;
(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nitrification- A lingle stage system required to achieve permit effluent rrrnhs on BOD
and ammonia nitrogen within the same biological reactor,
(13) Dechlorinatlon. The partial or complete reduction o1 residual chlorine In a Ilquid by any chemical or physical process;
(14) Denhrflication Process. The conversion o1 nitrate -nitrogen to nitrogen gas;