NC0004260_Permit (Modification)_20000327

7
State of North Carolina
Department of Environment
and Natural Resources •
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary NCDENR
Kerr T. Stevens, Director
March 27, 2000
Bruce Hickman
Turner, Hart, and Hickman, P.C.
4421 Stuart Andrews Boulevard, Suite 300
Charlotte, NC 28217
TH&H Job No. COL-01
Subject: Minor Modification of
NPDES Permit No. NCO004260
for CR Industries,
Gaston County
Dear Mr. Hickman:
On December 8, 1999, the Division of Water Quality (the Division) received your request to
modify the existing permit for the subject site. We have conferred with the Mooresville Regional
Office regarding your concerns regarding "instantaneous" versus "continuous" recording.
While this issue does not significantly impair compliance to the permit in your case, the Division
feels that it warrants written clarification. 'Accordingly, we have altered your permit effluent
page and provide these changes herewith. Please note that your current system design is in
compliance with Footnote No. 3.
Please discard the old effluent page and replace it with the attached revised page. If you have
further questions, please don't hesitate to call Joe Corporon at [phone],extension 597.
Respectfully,
err T. Stevens
cc: Water(,duality Central Files
Morresville Regional CIMce, Water Quality Section
NPDES Files.i
Technical Assistance and Certification Unit
Point Source Compliance Enforcement Unit
Layton Schuh, Environmental Manager
CR Industries, 4307 York Road, Gastonia, North Carolina 28053-1767
3617 MAIL SERVICE CENTER, RALEIGH, NORTH CAROLINA 27699-1 61 7 - TELEPHONE [phone]/FAX 919-
733-0719, AN EQUAL OPPORTUNITY AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED/i 0% POST-CONSUMER
PAPER. VISIT US ON THE INTERNET @ http://hZo.enr.5tate.nc.us/NPDE5

Permit NC0004260
A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period following the effective date of the permit and lasting until expiration, the Permittee is
authorized to discharge treated groundwater from Outfall 001. Such discharges shall be limited and
monitored by the Permittee as specified below:
...V r€�. , �. a. ;s a,a;ra 4 -t-s Px'i .. .,t w e titY� w i -X
AFFLUENT LIMITS ' �� � �; I
i, � IN M NII"QRING°REQUIREMENTS s
�`"" yt r} az { i� i J� { i ?.f j 1? i
gCHARACTERISFICS ' � �gt < ,, ��°� ti , , � O '��"s a
Monthl ,y;�Wc�kl 4A.4; DaiIM `Measurements Sam.,i T `Sam IeR '
�C3 9 '.;>w. "�sure FPB� 4 '4i .�"F i t�,v '^°?°9f.:f§'&S:efEM$�T` ,�5? 't 'a eA Bi
Av®rage Averageq� Maximum�h �; Frequency ,�� �Laction'�'
�. M.3 a'Y. s..�..,
Flow 0,0144 MGD2 Instantaneous3 Recording I or E
Chloroform Monthly Grab E
1,24rans-dichloroethene Monthly. Grab E
1,24rans-dichloro ro ane Monthly Grab E
Methylene Chloride Monthly Grab E
Tetrachloroethene PCE Month Grab E
Trichloroathene,TCE - — Month Grab E
Chronic Toxiciy Quarterlys Composite E
Footnotes-
1
I. Sample Location: E=Effluent (treated groundwater); I =Influent (untreated groundwater).
2. MGD =million gallons per day.
3. All discharge leaving the facility shall be monitored. If continuous flow monitoring is not feasible,
the pernuttee shall record the approximate time that discharge began and ended (or provide a
calibrated, totalizing flow meter), along with recording the instantaneous flow at the time of effluent
sampling.
4. Chronic Toxicity (Ceriodaphnia) at 0.33% '
5. Quarterly: Sample during the months of February, May, August, and November.
There shall be no discharge of floating solids or foam visible in other than trace amounts.

TURNER
HART &
HICKMAN, PC
Engineers and Scientists
February 5, 2001
Sent via FedEx
State of North Carolina Department of
Environment and Natural Resources I
\ Division of Water Quality
NPDES Permits Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Attn: David Goodrich i—NCH
�Supervisor;NPDES Unit iRe: Request for NPDES Permit Modification �Q1 +�Permit No. NC0004260 ,i-rrr
Former CR Industries, Gaston County t�"'UTH&H Job No. SKF-01 _J
Dear Mr. Goodrich:
SKF USA, Inc., the current operator of the ground water remediation system at the former CR
Industries facility listed above is requesting a modification to the above referenced permit. This
request is being made to modify the effluent sampling method for chronic toxicity analyses.
Historically, a time composite effluent sample has been collected each quarter using an automatic
sampler that draws multiple aliquots of the effluent over a specified number of hours. The
sampler is connected to the remediation system controls so that it only draws an aliquot when
treated water flows from the treatment system. Due to low ground water flow generated from the
recovery wells in recent months, the ground water remediation system discharges infrequently.
As a result, the automatic sampler is not able to collect sufficient effluent sample volume
required for the composite sample.
slam-matter proicctslskf-usalskf.Ol�npdcs 2-01 pmmit mod,dx
501 Minuet Lane • Suite 101 • Charlotte, North Carolina 28217
Telephone [phone] • Fa.r 704-586-0373

TURNER HART & HICKMAN, PC
Mr. David Goodrich
February 5, 2001
Page 2 of 3
Based on discussions with the NCDENR-DWQ, Mooresville Regional Office, it was agreed that
a modification to the current permit should be requested to allow collection of a grab sample for
chronic toxicity during periods of low flow, such as recently encountered. As also discussed
with DWQ, a flow rate criteria has been established to designate when it becomes possible to
reliably collect time composite samples. Accordingly, this letter serves as SKF USA's request
to modify the permit to allow collection of a grab sample for chronic toxicity testing when the
ground water remediation system effluent discharge rate falls below 30,000 gpd. If flows from
the remediation system are above that criteria, a time composite will be collected.
Should you have any questions concerning this request, please feel free to contact Bruce
Hickman, P.E. or Chad Grubbs of Turner Hart & Hickman, PC at [phone]. Please note
that we have also forwarded copies of this letter to Matt Mathews of the Aquatic Toxicology
Unit, as well as Richard Bridgeman and Rex Gleason of the Mooresville Regional Office.
Sincerely,
TURNER HART& HICKMAN, PC
Bruce Hickman, PE
Principal Engineer
Q 6,, ,1l3ely
Chad Grubbs
Project Geologist
s,Wa-master prnjws\skf-usalskf 011npdes 2-01 permit mod.doc

TURNER HART & HICKMAN, PC
Mr. David Goodrich
February 5, 2001
Page 3 of 3
cc: Bill McGlocklin Director of Environmental Affairs
SKF USA, Inc.
1111 Adams Ave.
Norristown, PA 19403
Mr. Richard Bridgeman
NCDENR - Mooresville Regional Office
919 North Main St.
Mooresville, NC 28115
Mr. Rex Gleason
NCDENR- Mooresville Regional Office
919 North Main St.
Mooresville, NC 28115
Mr. Matt Matthews
NCDENR - Aquatic Toxicology Unit
4401 Reedy Creek Rd.
Raleigh, NC 27607
s:\c -masier projecuslskf-uWskf0I\npdcs 2-01 pe iI mod doc