WQ0002725_Final Permit_19910322

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor George T. Everett, Ph.D.
William W. Cobey, Jr., Secretary Director
March 22, 1991
Mr. Jerry F. Rimmer
Mallinckrodt Specialty Chemicals, Company
Post Office Box 17627
Raleigh, North Carolina 27619
Subject: Permit No. WQ0002725
Mallinckrodt Specialty Chemicals, Co.
Wastewater Spray Irrigation Facilities
Wake County
Dear Mr. Rimmer:
In accordance with your renewal request received November 2, 1990, we are forwarding
herewith Permit No. WQ000272- 5 'dated March 22, 1991, to Mallinckrodt Specialty Chemicals,
Company for the continued operation of a wastewater treatment facility and spray irrigation
disposal facilities.
This permit shall be effective from the date of issuance until March 31, 1992, and shall
void Permit No. WQ0002725 issued September 12, 1990, 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.
If you need additional information concerning this matter, please contact Mr. Mark Hawes
at 919/ 733-5083. R
cc: Wake County Health Department
Wake County Division of Enviroi
Raleigh Regional Office
Groundwater Section
Training and Certification Unit
n rely,
orge T. Evere
Health
Po11ulion Prevention Pays
P.O. Box 27687, Raleigh, North Carolina 27611-7687 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT, HEALTH AND NATURAL RESOURCES
RALEIGH
SPRAY IRRIGATION SYSTEM PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Mallinckrodt Specialty Chemicals, Company
Wake County
FOR THE
continued operation of a 140,000 gpd spray irrigation type wastewater treatment facility consisting
of a 4.0 MG untreated waste holding tank, a 300,000 gallon equalization basin with a submerged
mixer, a 3,500 gallon neutralization tank, two (2) flow splitter boxes in series, a 10,000 gallon
Magnesium Hydroxide tank, a 5,000 gallon Phosphoric Acid tank, a 6,000 gallon Acetic Acid
tank, a 100,000 gallon anoxic basin, a 190,000 gallon anoxic basin, a 1,800 gpm anoxic effluent
pump station, two (2) 750,000 gallon aeration basins, a 200,000 gallon aeration basin, a 400,000
gallon aeration basin, a clarifier with a diameter of 28 feet, a 150 gpm return sludge pump station,
a 50 gpm Magnesium Hydroxide recycle pump station, a 20 gpm utility water pump station, flow
metering, a 400,000 gallon holding pond, a 35,000 gallon flush water storage tank, two (2) 2.1
MG above ground storage tanks, a 438 acre spray irrigation site utilizing approximately 210 acres
of wetted area to serve Mallinckrodt Specialty Chemicals, Company with no discharge of wastes to
the surface waters, pursuant to the renewal request received November 2, 1990 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 March 31, 1992, and shall
supersede Permit No. WQ0002725 issued September 12, 1990, and shall be subject to the
following specified conditions and limitations:
4 VA n
The spray irrigation facilities shall be effectively maintained and operated at all times so
that there is no discharge to the surface waters, nor any contamination of ground waters
which will render them unsatisfactory for normal use. In the event that the facilities fail
to perform satisfactorily, including the creation of nuisance conditions or failure of the
irrigation area to adequately absorb the wastewater, the Permittee shall take such
immediate corrective action to correct the problem, including actions as may be required
by the Division of Environmental Management.
2. The issuance of this permit shall not relieve the Permittee of the responsibility for
damages to surface or groundwaters resulting from the operation of this facility.
3. Solids, sludges, or other pollutants (waste chemicals, chemical containers and tars)
generated from these treatment facilities or plant processes shall be disposed of in such
a manner as to prevent any contamination of the surface or groundwaters of the State and
in accordance with General Statutes 143-215.1.

4. Diversion or bypassing of the untreated wastewater from the treatment facilities is
prohibited.
5. The following buffers shall be maintained:
a) 400 feet between wetted area of any new spray fields and any residence under
separate ownership,
b) 200 feet between wetted area and property lines,
c) 100 feet between wetted area and potable water wells,
d) 100 feet between wetted area of any new spray fields and drainageways or surface
water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells,
g) 50 feet between wastewater treatment units and property lines.
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 of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade
at least equivalent to the classification assigned to the wastewater treatment facilities by
the Certification Commission. Once the facility is classified, the Permittee must submit a
letter to the Certification Commission which designates the operator in responsible
charge.
3. A suitable vegetative cover shall be maintained.
4. Irrigation shall not be performed during inclement weather or when the ground is in a
condition that will cause runoff.
5. Adequate measures shall be taken to prevent wastewater runoff from the spray field.
6. 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.
7. The application rate shall not exceed: a) 1,570 pounds of TKN/acre/year
b) 0.25 inch/acre/week
No type of wastewater other than that from Mallinckrodt Specialty Chemicals, Company
shall be sprayed onto the irrigation area.
9. No traffic or equipment shall be allowed on the disposal area except while installation
occurs or while normal maintenance is being performed.
10. Public access to the land application sites shall be controlled during active site use. Such
controls may include the posting of signs showing the activities being conducted at each
site.
11. The average annual daily flow rate shall not exceed 140,000 gpd and daily maximum
flowrate shall not exceed 215,000 gpd as indicated in the supporting data.
12. A complete soil evaluation shall be maintained on file for all spray zones. The
recommendation must address loading rates, vegetative management practices (crop
rotation, harvesting, etc.) and site management practices (renovation of soils, removing
some zones for periods of rest, etc.).
K

13. No spray irrigation shall be conducted in the 100-year flood plain as indicated in the
supporting data.
14. Soil conditioning programs to increase soil pH, prevent sodium problems and to
improve overall site manageability shall continue in accordance with recommendations
from the soil scientist and results from the annual soil analysis and evaluation.
III. MONIJOR—ING AND REPORTING E RE T
Any monitoring (including groundwater, surface water, soil or plant tissue
analyses) 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. Adequate records shall be maintained by the Permittee tracking the amount of wastewater
disposed. These records shall include, but are not necessarily limited to the following
information:
a) date of irrigation,
b) volume of wastewater irrigated,
c) field irrigated,
d) length of time field is irrigated,
e) continuous weekly, monthly, and year-to-date hydraulic (inches/acre) loadings
for each field,
f) weather conditions, and
g) maintenance of cover crops.
3. The effluent from the subject facilities shall be monitored by the Permittee at the point
prior to irrigation every March, July and November for the following parameters:
Parameter
MagneTS S Magnesium
Total Coliform Calcium
PH Sodium Adsorption Ratio by Calculation
NH3 as N
4. Three copies of all operation and disposal records (as specified in condition II12) and
all effluent monitoring data (as specified in condition 1113) and any other data as may be
required shall be submitted on or before the last day of the following month to the
following address:
NC Division of Environmental Management
Water Quality Section
Facility Assessment Unit
PO Box 27687
Raleigh, NC 27611-7687
5. Noncompliance Notification:
The Permittee shall report by telephone to the Raleigh Regional Office,
telephone no. [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 sludge digester; 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
ofpumps, 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 has gone out of
compliance with its permit limitations.
Persons reporting such occurrences by telephone shall also file a written report in letter
form within 15 days following first knowledge of the occurrence. This report must
outline the actions taken or proposed to be taken to ensure that the problem does not
recur.
IV. GROUNDWATER REQUIREMENTS
1. Monitoring Wells No. 12, 13, 14, 16, and 17 shall be sampled every March, July,
and November for the following parameters:
NO3 (10.0) TDS (500.0)
TOC pH ( 6.5-8.5 standard units)
Ammonia Nitrogen Chlorides (250.0)
Water Level Total Coliforms (1/100 ml)
SO4(250.0) Sodium
Total Suspended Solids
Volatile Organic Compounds - In November only (by Method 1 or Method
2 below)
Method 1: Method 6230D ( Capillary - Column), "Standard Methods for
the Examination of Water and Wastewater", 17th edition, 1989
Method 2: Method 502.2 " Methods for the Determination of Organic
Compounds in Drinking Water", United States Environmental
Protection Agency - 600/4-881039
The measurement of water level must be made prior to sampling for the remaining
parameters.
The measuring points (top of well casing) of all monitoring wells shall be
surveyed relative to mean sea level (M.S.L.). The depth of the water in each well
shall be measured from the surveyed point on the top of the casing. The water level
elevations shall then be determined relative to mean sea level (M.S.L.).
The numbers in parentheses represent the maximum allowable concentrations in
groundwater for the various analytical parameters, as specified in 15 NCAC 2L
[Groundwater Classifications and Standards]. Unless otherwise noted, the
concentrations are given in parts per million.
2

If TOC concentrations greater than 10 mg/1 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 rng/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.
If any volatile organic compounds are detected by method 6230D, or the equivalent
method 502.2, then EPA methods 604 and 611 must also be run to detect other
organic compounds which may be present. The results of all analysis specified in
the monitoring requirements, including 604 and 611 if required, must be submitted
simultaneously.
The results of the sampling and analysis shall be sent to the N.C. Division of
Environmental Management on Form GW-59 (Compliance Monitoring Report
Form) every April, August, and December.
2. The Compliancf, Boundary for the disposal system is specified by regulations in 15
NCAC 2L, Classifications and Water Quality Standards applicable to the
groundwater of North Carolina. An exceedance of Groundwater Quality Standards
beyond the Compliance Boundary is subject to penalty provisions applicable under
General Statute 143-215.6(1)a. The sale of property, by the Permittee, which is
within or contiguous to the disposal system site may alter location of the Compliance
Boundary.
For facilities permitted on or after December 30, 1983, the Compliance Boundary is
established at the lesser of 250 feet from the spray irrigation area and
treatment/holding basins, or 50 feet within the property boundary.
If the title to any property which may affect the location of the Compliance Boundary
is changed, the permittee shall notify the Division Director within 14 days. The
Director shall then establish a modified Compliance Boundary which will be done as
a modification to the Permit.
The REVIEW BOUNDARY for the disposal system is specified by regulations in 15
NCAC 2L, Groundwater Classifications and Standards. A REVIEW
BOUNDARY is established around disposal systems midway between the
Compliance Boundary and the perimeter of the waste disposal area. When the
concentration of any substance equals or exceeds the maximum allowable
concentration of that substance at the RE -VIEW BOUNDARY, as determined by
monitoring, the permitdee shall either (i) demonstrate, through predictive calculations
or modeling, that natural site conditions, facility design and operational controls will
prevent a violation of standards at the Compliance Boundary; or, (ii) submit a plan
for the alteration of existing site conditions, facility design or operational controls
that will prevent a violation of standards at the Compliance Boundary, and
implement that plan upon its approval by the Director.
3. Any additional groundwater quality monitoring, as deemed necessary by the
Division, shall be provided.
V . INSPECTIONS
Adequate inspection, maintenance, and cleaning shall be provided by the Permittee to
insure proper operation of the subject facilities.
5

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 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.
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_
VI. GENERAL CONDITIONS
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.
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. 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 143-215.6.
5. 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.
6. Prior to any transfer of this land, a notice shall be given to the new owner that gives full
details of the materials applied at this site.
7. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the Iife of the project.
S. The annual administering and compliance fee must be paid by the Permittee within thirty
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).
q. 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.
C-9

Permit issued this the 22nd day of March, 1991
TH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
George T. Ever , Dirxr�anagement
Division of En ' m
By Authority of the Environmental Management Commission
Permit No. WQ0002725
7

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(HiSCELt-ARE•OUS UNITS COHTINUEO) POINTS
(c) HOlding Pond for Effluent Flow Equalization and/or
Stage Discharge . (�
(e) infPlant Pumps (including air lifts). . . . . . 3
{f) Stand -By Power Supply . . . . . . '
(g) Thermal Pollution Control Device 3
(h) Treatnrnt Processes for Removal of Metal or Cyanide and
other TOxic Materials . - . : . . . . . . . . . . 10
Total Points
CLASSIFICATIou
Class 1 . . . . . . . . . . . . 5 - 25 Points
Class 11 . . • , . . • . . . 26 - SO Points
Class Itl . . . . . , . . • . . . 51 - 65 Points
Class IV . . . . . . . . . . . . . . . GG - Up frnirsts
racilitiC$ having a rating of one through Four points, Inclusive,
do not rCqulre a certified operator. Classification of all other
facilities requires a comparable grade operator in responsible charge.
.4-
North Carolina
Oivisian of Environmental Management
Checklist of Facility Components
To be Used In Determing Facility Classification
All information will be printed:
Name of Plant INkA _(A.&[C.KKbZrr, jf_jc,
County A K, E
Oener or Contact Person
Mailing Add ress_--C- 3c �"r _F1pC.Cif)N
Street or P.O. Box 110. Town a r City lip
Permit Number Information
Construction Status
11POES Permit No. _ Pleasc Check:
Date issued Existing Fzeillty
Upgraded Facility
SLaLn 11e1sssft Iso.iA.(i� Hcx FacIIILy ^"
If Upgraded or llcx faelllty, Give:
Uatc Issued ( z rj T�p: 501 Complclion Date
1005 Completion Date -^
Rated by _Regional Office e�lzpft_ oete L al
Opr-rotor in Responsible ChArgc Grade
Design Flow of Plant in GPO _k:�. Qnc� Plant Class
ITEM
POIHTS
(1)
PRETREATMENT UNITS (sec definition No. 34)
2
(2)
_
DESIGN FLOW OF PLANT IN GPO {not applicable to rIon-
contaminated cooling waters and non -discharging systems
0 -- 20,000 . . . . . . . . . . . . . . .
I
20,001 -- 50,000 . . . . . . . . . . . • • . • .
2
50, 001 -- 100,000 . . . . . . . . . • '
3
100,001 -- 250,000 . . . . . . . . . 1 .
4
250,001 -- $00.000 .
. . . . . . . .
500,001 -- 1,000,000 . . . . . - . . . . . . . . . ,
1,000,001 ' . . '
5
y
-- 2,000,000 . . . . 10
2,000,001 (and up) - rate 1 point additional for each 200,OOC
GPD capacity up to
a maxir.,am of
Design Flow (GPO):
-'0
(1)
PRELIMINARY UNITS {sec dz nit on Nn. ]
(a) Influent Pump; (Inr,luding air lift) .
1
lh) floe Screens . . . . . . . . . . . . . . . . . . . .
or
L
(r:) Mr-clianiral Scrr:4n'.. SLdllr• "r;oTen. nr Corrnlnv�-inq
Ih;v i ces , . . . . . . . . . . . . . . ' .
{d) GI -It RiyrruYdl 0r
.
(t:) Mechanical or Aerated Grit Removal
. ' . .
1
2
�w
(f) Flow Measuring Device or .
(g) Instrumented .
I
Flow licasvrernent . . , , . , . , , ,
Q
Effective
411187

a
(5)
(b)
ITEM
POINTS
(h)
Preaeration or Equal Izatfon . . . . . . . . . .
(I)
Crease or.011 Separat.orS -- 6rariLy . . . , . .
?.
1{ech anicaI. . . . . , .
3
Aerated . , . . .
5
(j)
Cherr.ical Conditioning . . . . . . . . . .
CID
PRIMARY
TREATMENT UNITS
(a)
5eplic Tank (;ce deffzlitlon Ila. 14) -
2
(b)
Imhoff Tank . .
0
(c)
Prirrzry Clarifiers (including sludge air lifts) . .
5
(d)
Settling Ponds or Settling Tanks for Inorganic Non -
Toxic Materials involving a Discharge to the Surface
waters (sand, gravel, stone, and other mining operations
except recreaL.onal activities such as gem or gold
mining) . . . . . . . . . . . . . . . ..
10
SECONDARY TREATAEIiT UNITS
(a)
Carbonaceous Stage
(i) Aeration - high Purity Oxygen System
'20
Diffused Air System . . . .•. . . . . . . . .
10
lieeharsica' Air Sy;Lt:tn (fixed, r1niLL1419 ur rotor
SePar'a[e :;rudye HC.IcraLEan
7
(ii) Trickling FLlter - tligh Rate . . . . .
7
Standard Rate. . . . . . .
5
I'ar.V, •ri fnwrr
5
(ill) Acra Led Lagoon;
(iv) Rota Ling Biological Con0cLors (blodis C).
10
(v) Sand FilLGrs (intermittent biological)
2
(rl} SLabiii:a;lon Lar)non:
eL
(vli Clarlfler (Includtn9 S)udtlr air III'").
(6)
Ultragenovs St�:gc
(t) Aeration - I119h PurlLy Dxyge,n Sys lrm. . . . .
20
Dirrused Air Systcnr;, . . . .
10
Mechanical Air System (fined, floating, or rotor)D
Separate Sludge Reaeration . . . . . . . .
3
(11) Trickling Filter - Iligh Rate . . . . . . , .
7
Standard Rate . . . . . .
5
Packed Tower. . .
5
.(lit)
Rotating Biological Contactors (biodisc)
10
(tv) Sand Filter (intermittent biological), ...
2
(v) Clarifier iincluding sludge Air lifts)
5
TERTIARY
OR ADVANCED TREATMEi{T UNITS
(a)
Activated Carbon Beds - Without Carbon regeneration
5
With Carbon regeneration.
15
(b)
Powdered or Granular Activated Carbon Feed - Without
Carbon regeneration
5
With Carbon regeneration.
15
(c)
Ann+onia Stripping .. . . . . . . . . . . . . . . .
18
(d)
Chemical Additions . . . . . . . . .
5
[e)
DenStrlficaLion Process (separate process). . . .
15
(f)
E:ectrodialysis . . . . . . . . . . . . . . . . .
(g)
Foam Separation . . . . . . . . . . . . . . . . .
5
(h)
Inn E.cchange. . . . . . . . . . . . . . . . . . .
5
-2-
ITEM
POINTS
(I)
Land Application (;re, derinitIon Ila. 23hj
(nut applicm: Ie for• lac. IIILIB) under 10(.) .
(,jj
MIcroserecns . . . . . . . . . . . . . . . . . .
S
(k)
Phosphorus Removal
20
(1)
Polishing Ponds- Without aeration . . . . . . . .
I
WI th aeration . . . . . . . . ,
5
00
Pos L Ac ro LI(t rr - Ca S 4:0 de . . . . .
D
Diffused or Mechanical . . . .
S
(n)
Pre -Package Unit for Removal of Oil and Grease
30
(0)
Reverse Osmosis . . . . . . . . . . . . ..
5
(p)
Sand or Mixed -Media Filters -- Lox Rate . . . . ..
2
High ➢.a Le
5
(7)
SLUDGE TREATMENT
(a)
Sludge Digestion Tank -- Heated . . . . . . .
10
Aerobic . . . . . . . . .
5
Unheated . . , . . .
(b)
Sludge Stabilization (chemical or thtrnrzl) . . - .
;0
(c)
Sludge Drying Ueda . . . . . . . . . . . . . . . .
2
(d)
SIizdge Eiulrlatton . . . . . . .
5
e)
Sludge Conditio. . . . tine (chcmlcaI or tlncnnaI)
S
(f)
Sludge Jhicterier . .
2
(9)
Sludge Gas Utilization (itic tuding yas sLarage}, _
2
(It)
Sludge lioldlrtij farsk -- Acra Led .
5
-
Ron -aerated
2
(i)
Sludge Incinerator (not Including acttYALed carbon
regeneration) . . . . . . . .
Fi l rugc
1D
(a)
(j) Vaeuvw Lcr, Ct:n Lri or Filter Pre,,;
SLUDGE o1SPOSAL (including Incinerated ash)
iJ
(a)
Lagoons . . . . .
2
(It)
Land Alrpllcatinn {surface a:td Subsurr.ice) (Sep•, def,
233) . . . . . . . . . .
10
(c)
Landfllled {burial) . . . . . . . . . . . . .
5
(9)
DISINFECT[CIN
(a)
Pre . . . . .
b)
Intermediate . . . . . . . . .
?
(c)
Post . . . . . . . . . . . .
U
(d)
Dechlorination. . . . .
5
(e)
Chlorine or OZonc Generation . . . . . . . . . .
5
(f)
Radiation . . . . .
3
(10)
MISCELLANEOUS UNITS
(a)
Hqlding Ponds or Bolding Tanks for Inorganic, Non -toxic
Materials with no Discharge to the Surface Waters
2
.(Sludge handling facilities for water purification
plants, sand, gravel, crushed stone and other tinilar
operations --see definition Ko. 10)
(b)
holding Ponds ar Holding Tanks For Organic or Toxic
Materials with no Discharge to the surface Waters
4
(Any pump, valve, or other mechanical control subject
to failure creating a potential for bypass or discharge
from the holding ponds or tanks will necessitate a
minimum classification of Class I requiring a certified
operator).
-]-