NC0086827_Issuance of Permit_20001115

State of North Carolina
Department of EnvironmentA:7A
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary NCDENR
Kerr T. Stevens, Director
November 15, 2000
Mr. Bruce Biehl
,,e• em, Inc.
Z // 2300 'ast Pettigrew Street
rham, North Carolina 27702
Subject: Issuance of NPDES Permit NC0086827
Southchem Inc.
Durham County
Dear Mr. Biehl:
Division personnel have reviewed and approved your application for the subject permit. Accordingly, we
are forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S.
Environmental Protection Agency dated May 9, 1994 (or as subsequently amended).
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable
to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt
of this letter. 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(6714 Mail Service Center, Raleigh,
North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal requirements
to obtain other permits which may be required by the Division of Water Quality or permits required by the Division
of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may
be required.
If you have any questions concerning this permit, please contact Michael Myers at telephone number(919)
733-5083,extension 508.
Sincerely,
Original Signed By
David A Goodrich
Kerr T. Stevens
cc: Central Files
igh Regional Office/Water Quality Section
Point Source Compliance Enforcement Unit
Technical Assistance&Certification Unit
Aquatic Toxicology Unit
1617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1617-TELEPHONE [phone]/FAX [phone]
AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER- 50%RECYCLED/ 10%POST-CONSUMER PAPER
VISIT US ON THE INTERNET©http://h2o.enr.state.nc.us/NPDES

Permit Number: NC0086827
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and
the Federal Water Pollution Control Act, as amended,
Southchem, Inc.
is hereby authorized to discharge wastewater from a facility located at
Southche zTiic. Groundwater Remediation System
2309,East Pettigrew Street
2 Durham County
to receiving waters designated as Unnamed Tributary to Third Fork Creek in the Cape Fear River
Basin in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III and IV hereof.
This permit shall become effective December 1, 2000.
This permit and authorization to discharge shall expire at midnight on October 30, 2005.
Signed this day November 15, 2000.
Original Signed By
David A Goodrich
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit Number: NC0086827
SUPPLEMENT TO PERMIT COVER SHEET
Southchem, Inc.
is hereby authorized to:
1. After receiving an Authorization to Construct from the Division of Water Quality,
construct and operate a groundwater remediation treatment system with an ultimate
design capacity of 0.0144 MGD, and
2. Discharge treated groundwater from said treatment works at the location specified on
the attached map through outfall(s) 001, into an unnamed tributary to Third Fork
Creek, which is classified C-NSW waters in the Cape Fear River Basin.

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Southchem Inc. Facility X
Latitude: 35°58'44" Sub-Basin 03-06-05 Location
Longitude: 78°52'51"
Quad#: D 23 NW-SW Durham .4/
Stream Class: C-NSW
North Southchem kr
Receivine Stream Unnamed Tributory to Third Fork Creek
NC0086827
Permitted Flow: 0.0144 MGD Groundwater Remediation System

Permit NC0086827
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
Permittee is authorized to discharge treated groundwater from outfall(s) 001. Such discharges shall
be limited and monitored by the Permittee as specified below:
EFFLUENT LIMITS MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly Weekly Daily Measurement Sample Type Sample
Average Average Maximum Frequency Locationl
Flow'- 0.0144 MGD Continuous Recording E or I
Total-Suspended Solids 30.0 mg/L Monthly Grab E
Oil and•Grease2 Monthly Grab E
Iron Monthly Grab E
Manganese _ Monthly Grab E
Benzene 71.4µg/L Monthly Grab E
Bis(2-ethylhexyl)phthalate -^ -''C 4, ) 5.9 lig/ Monthly Grab E
1,1 -Dichloroethene 3.2µg/L Monthly Grab E
Tetrachloroethene 8.85 mg/ Monthly Grab E
Trichloroethene 81.014/L Monthly Grab E
Toluene 11.0µg/L Monthly Grab E
Carbon disulfide3 -4 ,s rsha sT4'i' Monthly Grab E
Chloroethane3 vi veMonthly Grab E
Chloroform3 cF:.rti,o 1C, Monthly Grab E
1,1-Dichloroethane Monthly Grab E
1.2-Dichloroethane Monthly Grab E
Ethylbenzene3 cr' :-Pied--t, Monthly Grab E
Isopropyl ether3 re r115\re_ Monthly Grab E
Methylene Chloride3 ce,mov-e. Monthly Grab E
Methyl isobutyl Ketone3 re4fovt Monthly Grab E
Napthalene3 ‘.- ,i,o rte. Monthly . Grab E
Silieri>l3• , i,>W' I ro( ¢rr rl 6),c1_.) Monthly Grab E
Sec-butylbenzene3 r tzmot-e. Monthly Grab E
Tert-butylbenzene3 r e,y e arc Monthly Grab E
1,1,1-Trichloroethane3 ,r,;.risv'` Monthly Grab E
1,3,5-Trimethylbenzene3 r,, rti,orL Monthly Grab E
1,2,4-Trimethylbenzene3 ,r .ir Monthly Grab E
Vinyl Chloride Monthly Grab E
Xylenes,(Total) Monthly Grab E
EPA Method 624/625(Full Suite) Annually Grab E
Total Nitrogen Monthly Grab E
Chronic Toxicity° Quarterly Composite E
Footnotes:
1. Sample Location: E- Effluent, I - Influent
2. The grab sample for oil and grease should be skimmed from the surface in a quiescent zone, such
as a holding tank, if possible.
3. If after one year of sampling (12 sampling events) this analtye has not been detected above the
quantitation limit, the permittee may request that the Division evaluate removing that parameter
as a condition for the permit.
4. Chronic P/F (Ceriodaphnia) @ 90%, January, April, July, and October.
The discharge shall contain no floating solids or foam visible in other than trace amounts.

Permit NC0086827
A.(2.) CHRONIC TOXICITY PERMIT LIMIT(QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia
dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina
Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North Carolina
Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised-February 1998) or subsequent versions. The tests will be
performed during the months of January, April,July, and October. Effluent sampling for this testing shall he performed at the
NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit limit, then
multiple-concentration testing shall he performed at a minimum, in each of the two following months as described in "North
Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"(Revised-February 1998)or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration
having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable
impairment of reproduction or survival.The definition of"detectable impairment,"collection methods,exposure regimes, and
further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised-February 1998)or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form
(MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B
for the Chronic Value.Additionally, DWQ Form AT-3(original)is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Branch
1621 Mail Service Center
Raleigh,North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall he'filed with the Environmental Sciences Branch no later than 30 days after the
end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response
data, and be certified by laboratory supervisor and ORC or approved designate signature. Total residual chlorine of the
effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittec
will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit
number, pipe number, county, and the month/year of the report with the notation of"No Flow" in the comment area of the
form.The report shall be submitted to the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during. a month in which toxicity monitoring is required, monitoring will be required
during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water Quality
indicate potential impacts to the receiving stream, this permit may be re-opened and modified to include alternate monitoring
requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival,
minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will
require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial
monitoring.

syy\AI tPUBLIC NOTICE
STATE OF NORTH 10°I)CP
CAROLINA
AFFIDAVIT OF PUBLICATION ENVIRONMENTAL
MANAGEMENT
COMMISSION/
NPDES UNIT
1617 MAIL SERVICE
CENTER
RALEIGH,NC
27699-1617
NOTIFICATION OF
INTENT TO ISSUE A
NPDES WASTEWATER
PERMIT
On the basis of thorough
staff review and applica-
tion of NC General Stat-
ute 143.21,Public law 92-
500 and other lawful
standards and regulations
State of North Carolina ,the North Carolina Envi-
ronmental Management
County of Durham Commission proposes to
issue a National Pollutant
,Discharge Elimination Sys.
m (NPDES) wastewater
Donna B. Minor being dulydischarge permit to the
b sworn says that she is the person(s) listed on the at-
Principal Clerk of The Durham Herald Co. publishers Cached pages effective 45
p Inc.,, days from he publish date
of this notice.
of The Herald-Sun, a newspaper published in and of general Written comments regard-
ing the proposed permit
circulation in said County, and that a notice of which the will be accepted until 30
days after the publish
annexed is a true copy, was published in said newspaper one date of this notice. All
comments received prior
time on the 24th day of June, 2000. to that date are consid-
ered in the final determi-
nation regarding the pro-
posed permit. The Direc-
• tor of the NC Division of
f n _ Water Qualitymay decide
to hold a public meeting
for the proposed
osed permit
should the Division re-
ceive a significant degree
Principal Clerk of public interest.
Copies of the draft permit
and other supporting infor-
mation on file used to de-
termine conditions pres-
ent in the draft permit are
Sworn to and subscribed before me this 27th day of June, available upon request
and payment of the costs
2000. of reproductions. Moil
comments and/or re-
nests forDinformation of Wa tor
the NC Division of Water
)C.(Z') Quality at theabove ad-
dressCJ or call Ms. Christie
Jackson at (919) 733-
5083, extension 538.
Notar})Publ Please include the NPDES
permit number (attached)
in any communication. In-
terested persons may also
visit the Division of Water
Quality at 512 N. Salis-
bury Street, Raleigh, NC
27604-1148 between the
My commission expires December 16, 2001. hours of 8:00 a.m. and
5:00 p.m.to receive infor-
mation on file.
NPDES Permit Number
Durham County, North Carolina NC0086827 Southchem,
Inc., 2300 fast Pettigrew
Street, Durham, NC
27702 has applied for a
new permit for a facility lo-
cated in Durham County
discharging treated waste-
water into Unnamed Tribu-
tary to Third Fork Creek in
the Cape Fear River Basin.
Currently None ore water
p �^ o'r'"/✓�/�y quality limited. This dis-
charge may affect future
„00u00,0Aallocations in this portion
r oo' " of the receivingstream.
H-S:June 24,2000
0
CvF-Y 40 C..

SOC PRIORITY PROJECT: Yes: No: ✓ .
If Yes, SOC No.:
NPDES STAFF REPORT AND RECOMMENDATIONS
FOR A GROUNDWATER REMEDIATION SYSTEM
TO SERVE SOUTHCHEM, INC.
April 24, 2000
To: Permits and Engineering Unit
Water Quality Section
Attention: Mike Myers
County: Durham
Permit No.: NC0086827
PART I - GENERAL INFORMATION
1. Facility and Address: Mr. Bruce Biehl
Southchem,Inc.
2000 East Pettigrew Street
Durham,NC 27702
2. Date of Site Visit: 4/19/2000
3. Report Prepared by: Randy Jones
4. Persons Contacted and Telephone Number: Jim Shilliday and Nanjun Shetty
with Arcadis, Geraghty, and Miller (782-5511); performed site visit with Jim
and Nanjun and Bruce Biehl and David Robertson of Southchem.
5. Directions to Site: I-40 west, north on Hwy. 147, take
Briggs Ave. exit to the right, left at stop sign onto
Pettigrew, Southchem is on left approximately 0.2
miles.
6. Discharge Point(s), List for all discharge points:
MAY - 9 2000
Latitude: 35° 58' 44" Longitude: 78° 52' 1" POINBT SOOP E BRANCH
NPDES Staff Report (NC0086827)
Page 1

Attach a USGS map extract and indicate treatment facility site and discharge point
on map.
U.S.G.S. Quad No.: D23NW U.S.G.S. Quad Name: Southwest Durham
7. Site size and expansion area consistent with application?Yes: ✓
No: If No, explain:
8. Topography (relationship to flood plain included): Site is relatively flat and is
not located in a flood plain.
9. Location of nearest dwelling: Greater than 400 feet
10. Receiving stream or affected surface waters: UT to Third Fork Creek
a. Classification: C NSW
b. River Basin and Subbasin No.: 03 06 05
c. Describe receiving stream features and pertinent
downstream uses: End of pipe is proposed into stormwater ditch
at corner of property. Culvert goes under Hwy. 147.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be permit 14,400 GPD
b. What is the current permitted capacity of the Waste Water Treatment facility?
Not yet permitted
c. Actual treatment capacity of the current facility(current design capacity)?
N/A
d. Date(s) and construction activities allowed by previous Authorization to
Construct issued in the previous two years: N/A
e. Please provide a description of existing or substantially constructed
wastewater treatment facilities: N/A
f. Please provide a description of proposed wastewater treatment facilities: The
submittal refers to recovery wells, a low profile air stripper, carbon
vessels, to discharge; however, detailed design information must be
submitted, aong with a request for an A to C.
g. Possible toxic impacts to surface waters: Chlorinated and non-chlorinated
organic solvents
NPDES Staff Report(NC0086827)
Page 2

h. Pretreatment Program (POTWs only):
in development: approved:
should be required: not needed: ✓
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied,please specify DEM permit no.:
Residual Contractor:
Telephone No.:
b. Residuals stabilization: N/A PSRP:
PFRP: Other:
c. Landfill:
d. Other disposal/utilization scheme (Specify):
3. Treatment plant classification (attach completed rating sheet): Physical/chemical
Grade I
4. SIC Code(s): 5169
Wastewater Code(s) of actual wastewater, not particular facilities i.e.., non-contact
cooling water discharge from a metal plating company would be 14,not 56.
Primary: 66, 84, 85
Main Treatment Unit Code: 560-0
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved. (municipals
only)?Not that I am aware of.
2. Special monitoring or limitations (including toxicity) requests: Typical for
groundwater remediation involving chlorinated and non-chlorinated solvents.
3. Important SOC, JOC or Compliance Schedule dates: (Please indicate)
Date
Submission of Plans and Specifications
Begin Construction
Complete Construction
NPDES Staff Report(NC0086827)
Page 3

4. Alternative Analysis Evaluation: Has the facility evaluated all of the non-discharge
options available? Please provide regional perspective for each option evaluated.
Spray Irrigation: Not enough room
Connection to Regional Sewer System: Durham will not accept remediated
groundwater on a permanent basis.
Subsurface: Soils/site not suitable
Other disposal options:
5. Other Special Items:
PART IV - EVALUATION AND RECOMMENDATIONS
The WQ RRO has reviewed the submitted information and performed a site visit of the
proposed groundwater remediation site. The proposal is to construct a groundwater
remediation system and discharge the remediated groundwater into a storm drain on the
back side of the property. At the end of pipe (at least based upon where the consultant
and Southchem folks indicated that the discharge would be located during the site visit)
the stormwater ditch is approximately three feet wide and reaches a maximum depth of
approximately sixteen inches.
Upon satisfactory review by the NPDES Unit, the WQ RRO has no objection to the
issuance of the permit.
•
Signature(rep• preparer Date
Water Quality Regional Supervisor ate
file: h:\gwremedi\nc86827.sr
NPDES Staff Report (NC0086827)
Page 4

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0086827
Facility Information
Applicant/Facility Name: SouthChem, Inc.
Applicant Address: 2000 East Pettigrew Street,Durham,NC 27702
Facility Address: 2000 East Pettigrew Street,Durham,NC
Permitted Flow 0.0144 MGD
Type of Waste: Remediated Groundwater
Facility/Permit Status: New
County: Durham
Miscellaneous
Receiving Stream: UT to Third Fork Regional Office: Raleigh
Creek
Stream Classification: C NSW USGS Topo Quad: D 23 NW—SW Durham
303(d) Listed?: No Permit Writer: Michael Myers
Subbasin: 03-06-05 Date: June 13,2000
Drainage Area (mi2): <0.1 mi2
Summer 7Q10 (cfs) 0.0 � ' ` ,.
Winter 7Q10 (cfs): 0.0 g d " 1
Average Flow (cfs): <0.1
IWC (%): 100%
Primary SIC Code: 5196
SUMMARY
SouthChem, Inc. has applied for an NPDES permit to discharge remediated groundwater into a storm drain
located in Durham County. The only viable option, other than discharge to surface water, is to discharge to
the City of Durham. However, the City of Durham is unwilling to accept the remediated groundwater.
Leaving the only other economically viable option as discharge to surface water.
The facility is requesting a permitted flow of 0.0144MGD. Groundwater sampling events from 1996 to
present have detected the following compounds including chlorinated solvents:
-Isopropyl ether
Benzene
Carbon disulfide
Chloroethane
Chloroform
1,1-Dichloroethane
1,1-Dichloroethene
1,2-Dichloroethane(total)
1,3,5-Trimethylbenzene
tert-butylbenzene
-1,2,4-Trimethlybenzene
sec-butylbenzene
,ethylbenzene
'Methlyene chloride
Tetrachloroethene
Toluene
1,1,1-Trichlorethane
Trichloroethene
Vinyl chloride
Xylenes(total)
Bis(2ethylhexyl)phthalate
Fact She
NPD[S Re nt:wal
Page 1

Naphthalene
Phenol
In addition to solvent contamination groundwater samples indicate contamination from petroleum sources,
therefore the conditions of the general permit for groundwater remediation systems have been incorporated
into this permit. The general permit assumes zero dilution in developing the permit limits and monitoring
requirements. Assuming zero dilution is appropriate for this site since discharge is to a zero flow stream.
A vacuum-enhanced recovery system will be used to pump groundwater from 10 extraction wells at a
maximum rate of 10 gpm per well. This equates to 0.0144 MGD.
The discharge will be to an unnamed tributary to Third Fork Creek. Though the unnamed tributary is not
listed as impaired, according to the state's 303(d) list, Third Fork Creek is listed as impaired. The cause of
impairment is uncertain but urbanization is suspected.
TOXICITY TESTING:
Recommended Requirement: Chronic Toxicity (Ceriodaphnia) P/F at 90%
INSTREAM MONITORING:
None.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: June 28,2000
Permit Scheduled to Issue: August 14,2000
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Michael
Myers at(919)733-5038 ext.508.
NAME DATE: 4'lz l too
NPDES SUPERVISOR:
NAME: DATE:
Fact S}icc
NPDES Renewal
Page 2

REGIONAL OFFICE COMMENT:
,b-0A
kez-P--ii
7/070_,
/11-74'
NAME: DATE:
Fact Shcc
NPDFS Renewal
Page 3
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