WQ0006699_Final Permit_19971125

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. William M. King, Plant Manager
Hoechst Celanese Polyester Intermediates
P.O. Box 327
Wilmington, NC 28402-0327
Dear Mr. King:
' IN1.1;VA
T Is
I D E N F�
November 25, 1997
Subject: Permit No. WQ0006699
Hoechst Celanese Polyester Intermediates
Wastewater Spray Irrigation
New Hanover County
In accordance with your application received August 27, 1997, we are forwarding herewith Permit
No. WQ0006699, dated November 25, 1997, to Hoechst Celanese Polyester Intermediates for the
continued operation of the subject wastewater treatment and spray irrigation facilities.
This permit shall be effective from the date of issuance until October 31, 2002, shall void Permit
No. WQ0006699 issued July 31, 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. Randy Kepler at
[phone] extension 544.
Sincerel ,
C
-XA. Preston Howard, Jr., P.E_
cc: New Hanover 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, No change in rating
Non -Discharge Compliance/Enforcement Unit
P.D. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
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
Hoechst Celanese Polyester Intermediates
New Hanover County
FOR THE
continued operation of a 0.407 MGD spray irrigation treatment and disposal facility consisting of a 60 acre
spray site with 28 spray irrigation guns located 300 feet apart, a 0.30 million gallon holding tank, dual 500
GPM irrigation pumps, and all related piping, valves, controls and appurtenances to irrigate treated
effluent from the subject biological wastewater treatment facility; and the continued operation of an existing
process wastewater and iron removal facilities for removal of residuals consisting of earthen lagoons in
which polymer is added and residuals are concentrated, and the ultimate disposal of residuals by
composting under contract agreement with McGill Environmental Systems of N.C. Inc. (Permit No.
WQ0006816), to serve Hoechst Celanese Polyester Intermediates, with no discharge of wastes to the
surface waters, pursuant to the application received August 27, 1997, and in conformity with the project
plan, specifications, and other supporting data subsequently filed and approved by the Department of
Environment and Natural Resources and considered a part of this permit.
This permit shall be effective from the date of issuance until October 31, 2002, shall void Permit
No. WQ0006699 issued July 31, 1995, and shall be subject to the following specified conditions and
limitations:
I. PERFORMANCE STANDARD
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 assimilate the wastewater, 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 and disposal facilities.
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. 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. 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 and any residence or places of public assembly under
separate ownership,
b) 150 feet between wetted area and property lines,
c) 100 feet between wetted area and wells,
d) 100 feet between wetted area and drain ageways or surface water bodies,
e) 50 feet between wetted area and public right of ways,
f) 100 feet between wastewater treatment units and wells, and
g) 50 feet between wastewater treatment units and property lines.
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 Operators
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. A suitable year round vegetative cover for the spray irrigation field shall be maintained.
The cover crop shall be harvested and removed from the spray irrigation site as required for
proper operation.
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 cumulative loading of 91.25 inches over any twelve
(12) month period at an instantaneous application rate not to exceed 0.25 inches per hour.
8. No type of wastewater other than that from Hoechst Celanese Polyester Intermediates 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. Freeboard in the existing earthen lagoons shall not be less than two feet at any time.
2

III. MONITORING AND -REPORTING REQUIREMENTS
1. Any monitoring (including groundwater, surface water, soil or plant tissue analyses)
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. 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,
g . maintenance of cover crops,
h . volume of residuals generated at this facility,
i. volume of residuals transported to the McGill Associate's Facility (Permit No.
WQ0006816).
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:
BOD5
TSS
Fecal Coliform
pH
Cobalt
TOC
Manganese
1,4-Dioxane
NH3 as N
Sodium
Magnesium
Calcium
Sodium Adsorption Ratio by Calculation
4. Three (3) copies of all operation and disposal records (as specified in condition 1112) on
Form NDAR-1 shall be submitted on or before the last day of the following month. Three
(3) copies of all effluent monitoring data (as specified in condition 1113) 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
5. A representative annual soils analysis (Standard. Soil Fertility Analysis) shall be conducted
on each spray field and the results maintained on file by the Permittee for a minimum of
five years. The Standard Soil Fertility Analysis shall include, but is not necessarily limited
to, the following parameters:
Acidity Manganese Potassium
Calcium Percent Humic Matter Sodium
Copper pH Zinc
Magnesium Phosphorus
Cation Exchange Capacity Base Saturation (by calculation)

6. 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 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 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
directly to receiving waters without treatment 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 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 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. For the purposes of groundwater sampling reporting to the Division, the following
groundwater monitoring well names shall be changed:
LE- I shall be renamed MW-1
LE-2 shall be renamed. MW-2
LE-3 shall be renamed MW-3
LE-4 shall be renamed MW-4
LE-5 shall be renamed MW-5
Z shall be renamed MW-8
2. Monitor wells MW-1, MW-2, MW-3, MW-4, MW-5, and MW-8 shall be sampled every
March, July and November for the following parameters:
Water Level
pH
Chloride
Total Dissolved Solids (TDS)
Cobalt
Total Organic Carbon (TOC)
Iron
Nitrate (NO3)
Manganese
Fecal Coliforms
1,4-Dioxane
The measurement of water Ievels 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.
4

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.
3. Any additional groundwater quality monitoring, as deemed necessary by the Division, shall
be. provided.
4. The COMPLIANCE BOUNDARY for the disposal system is specified by regulations in
15A NCAC 2L, Groundwater Classifications and Standards. The Compliance Boundary
for the disposal system constructed prior to December 31, 1983 is established at either (1)
500 feet from the waste disposal area, or (2) at 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 pernuttee.
V . INSPECTIONS
I . 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 Permttee 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 or other permitting authority,
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.
5

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. 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.
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. A set of approved plans and specifications for the subject project must be retained by the
Permittee for the life of the project.
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 15A NCAC 2H .0205
(c)(4).
8. 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.
9. The ultimate disposal of residuals shall be by composting, under contract agreement with
McGill Environmental Systems of N.C. Inc. (Permit No. WQ0006816). In the event the
agreement between Hoechst Celanese Polyester Intermediates and McGill Environmental
Systems of N.C. Inc. is terminated, Hoechst Celanese shall immediately find an alternative
form of residual disposal and submit to the Division a request for permit modification to
have permitted the new form of residual disposal.
Permit issued this the Twenty Fifth day of November, 1997
NORTH C OLINA EN ONMENTAL MANAGEMENT COMMISSION
i
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0006699

,omnc~,��---�\� -
j I � »
{�l,� �_exa^ej-t'
L/'ncl(~"Ix'�`
,
----'
...... x°u III Nil "
----'-
1
\T|')N MAP
)S|R|[S/VY|LW|MCT{)N
OUSF PRnJ[C| ALVV'V ()O|

Hpe J1 � j ce"pem es e
/yam Pd/1vL'1?r C0LtA L00 000 6 E 9
. M.rCsnx rLll Ulsalra[r .q.ridr KLL ?T'� f.-IL 'Sr Ix•1 r. �t�Ik -1 Ir-) 717 T rY-f
a ca•n
- .I2lP lt.
i� r[LPMU l . LL w
Vie_! �' 1 r••rl� Il^r••-•`••_ • x-15
rn ii
Al2-1 �
it-t-► J '� T-] 1r7® — LC-] �]•
I duly.
e� j lw 11 Eli!)
I DrSP]S.l
SSki
u tt^
1� �• a Q � I ��' fy F
CDI
•t! F12 L a
YY TY+ {.TJ-
r
.6s.s..2. a/1 •� ._- wr -: TrA20 4T_
A2 ri-ta• � 11 `
h` r .r )r.-IS T
r }y.a y.A � � et•7 ri-t I.�Sr
' f�-717{ 15•[ v. „ fI-1�T"11 +i
uz �L1.-11
'-
! F] •wit
�y
r
�rE1 REYrSWUS BY RUST PROJECT Na.8.30 OAIE
DES(CMo By L.1. LJ uS I Ivan
I I I E N VI R O NMENT
MAWH BT /93
C1£CRED By INFRASTRUCTURE
1 IFILE he.
�• s:at la ils:
FIGL1fiE ?-�
S)TE PLANPxELL LOCATIOlI ,1MAP
HOECH9T CELANESE POLYE=TER IWTERMEDlATES
VPLMINGTON. NORTH CAROLINA