NC0085928_Permit Modification Request_20050804

oF W A T Michael F.Easley,Governor
William G.Ross Jr.,Secretary
[ North Carolina Department of Environment and Natural Resources
p Alan W.Klimek,P.E.Director
Division of Water Quality
August 4,2005
Mr.Dirk Jaekel
American Truetzschler Inc.
P.O.Box 669228
Charlotte,North Carolina 28299
Subject: Modification of
NPDES Permit NC0085928
American Truetzschler Inc.
Mecklenburg County
Dear Mr.Jaekel:
The Division has reviewed and approved your request to modify the subject permit. This modification corrects the
Monitoring Requirement error for 1,1-Dichloroethane referenced in the NCDENR letter dated August 1,2003.This permit
modification changes the Monitoring Frequency back to Monthly for 1,1-Dichloroethane. No other changes to the permit have
been made.
Please find enclosed the revised pages,which should be inserted into your permit. The old pages may then be
discarded. All other terms and conditions contained in the original permit remain unchanged and in full effect. This permit
modification is issued under the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of
Agreement between North Carolina and the U.S.Environmental Protection Agency.
If any parts,measurement frequencies or sampling requirements contained in this permit modification 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 a written petition conforming to Chapter 150B of the North Carolina General Statutes,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. If you have any questions concerning this permit modification,please contact Robert Guerra
of the NPDES Unit at(919)733-5083,extension 539.
Sincerely,
1/ .-\/V-)
Al n W.Klimek,P.E.
cc: Central Files
Mooresville Regional Office/Surface Water Protection
NPDES Unit
Mecklenburg County,Water Quality Program
Nom` Carolina
:Naturally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh,NC 27699-1617 Phone[phone] Customer Service
Internet h2o.enr.state.nc.us 512 N.Salisbury St. Raleigh,NC 27604 FAX [phone] 1-877-623-6748
An Equal Opportunity/Affirmative Action Employer—50%Recycled/10%Post Consumer Paper

Permit NC0085928
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of the permit and lasting until expiration,the Permittee is
authorized to discharge from Outfall 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
EFFLUENT LIMITS MONITORINi IREQtTR MENTS
CHARACTERISTICS Monthly Daily Measurement Sample Sample Location
Average Maximum Frequency Type
Flow 0.05MGD Weekly Pump or Effluent
Meter
1,1-Dichloroethenel 0.057 µg/L Monthly Grab Effluent
1,2-Dichloroethanel 0.38 µg/L Monthly Grab Effluent
Trichloroethylene(TCE) 2.714/L Monthly Grab Effluent
1,1-Dichloroethane Monthly Grab Effluent
,1,1,1-Trichloroethane Monthly Grab Effluent
d Tetrachloroethylene(PCE) Monthly Grab Effluent
Chronic Toxicity3 Quarterly Composite Effluent
Footnotes:
1. The detection limit for 1,1-Dichloroethene and for 1,2-Dichloroethane is 1.0
pg/L. If the measured level of 1,1-Dichloroethene or 1,2-Dichloroethane is below
the detection limit, then the measurement is considered to be zero for compliance
purposes and should be reported on the Discharge Monitoring Report (DMR) as
<1.0µg/L.
2. Chronic Toxicity (Ceriodaphnia P/F at 90%), monitor quarterly in February, May,
August and November[see Special Condition A. (2.)].
There shall be no discharge of floating solids or foam visible in other than trace amounts.