AQ_F_1900104_20071017_CEM_RptRvwLtr

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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Air Quality
Michael F, Easley, Governor William G. Ross, Jr., Secretary
B. Keith Overcash, P.E., Director
October 17,2007
Mr. William S. Bond
Environmental, Health& Safety Manager
3M Environmental Technology and Safety Services
P.O. Box 33331
St. Paul, MN 55133-3331
Subject: First Semesters 2007Continuous Opacity Monitoring Systems (COMS) Report for 1D No.
CD 1 -40 CFR Part 60, Subparts A and UUU.
Facility ID No.1900104
Dear Mr. Bond:
The Division of Air Quality(DAQ)has reviewed your first semester 2007(January 1,through June
30, 2007)opacity emission reports from the C&S Dryer, CL1Preheater, and CL2 Pre heater as well as the
amended report for CL2 Preheater dated September 11, 2007.The reports were reviewed for compliance
with the monitoring and reporting requirements of the emission control standard(opacity limit) set forth in
the current Air Quality Pen-nit# 09006R00. The reports were also reviewed for compliance with good
operation and maintenance practices set forth in 40 CFR Part 60, Subparts A and UUU and implemented in
the EPA Region IV CEM Enforcement Plan(CEP) and in accordance with EPA's High Priority Violations
(HPVs) guidance.
Based on the review, the opacity excess emissions and monitor downtime for the period were
reported and confirmed as follows:
UNIT 1st SEMESTER 2007
C&S Dryer EE 0.0%
MDT 0.72%
CL 1 Preheater EE 0%
MDT 0.86%
CL2 Pre heater EE 0%
MDT 1.62%
When the reports are reviewed with respect to the emission control standard(opacity limit)no six-
minutes opacity exceedances were noted C&S Dryer, CL1Preheater, and CL2 Pre heater. However,when
the reports are reviewed for compliance with good operation and maintenance practices,excess emissions
and monitor downtime were reported and confirmed(as shown above)to be below the CEP criteria and the
HPVs guidance. Therefore no further action is required.
Technical Services Section
1641 Mail Service Center,Raleigh, North Carolina 27699-1641 One
2728 Capital Blvd.,Raleigh,North Carolina 27604 NofthCarolina
Phone: [phone] FAX [phone]Internet: www.ncair.org Naturally
An Equal Opportunity/Affirmative Action Employer-30%Post Consumer Recycled Paper

Mr. William S. Bond
Page Two
October 17, 2007
If you have any questions regarding this review,please call me at(919)733-1467.
Sincerely,
Dennis U. Igboko
Environmental Engineer
CC: "Mike Aldridge
Ernie Fuller—RRO
IMPAQ—Documents - 1900104
Dianne Dejolsvay—3M
Central File-Chatham County