NC0004685_Technical Correction_19990412

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
Kerr T. Stevens, Director
April 12. 1999
Mr. Lacy Ballard
PPG Industries Fiber Glass Products. Inc.
940 Washburn Switch Road
Shelby, North Carolina 28150
AVA
NCDENR
Subject: NPDES Permit Correction
Permit No. NC0004685
Shelby Facility
Cleveland County
Dear iIVtr. Ballard:
On March 29, 1999 the Division of Water Quality issued NPDES Permit No. NC0004685 to PPG
Industries for their Shelby facility. In response to your request received April 6, 1999, the permit has been
corrected to include weekly monitoring for BOD-, and NH;-N as was required in the previously issued permit.
Please find enclosed an amended effluent limitations page for outfall 001. This page should be
inserted into your permit and the old one discarded. All other terms and conditions contained in the original
permit remain unchanged and in full effect. This permit correction is issued pursuant to 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 you have any questions concerning this permit modification, please contact Mr. Mark McIntire at
telephone number [phone]. extension 555.
Sincerely,
6.4
ft,--
err T. Stevens
Cc: Central Files
Mooresville Regional Office / Water Quality Section
NPDES Unit Files
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50 % Recycled / 10 % Post -consumer paper

A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL
Permit No. NC0004685
During the period beginning on the effective date of the permit and lasting until permit expiration, the Permittee is authorized to discharge from
outfall(s) gerial number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
EFFLUENT LIMITATTONS
MONI'1'ORING REQUIREMENTS
Monthly
Average
lb/day
Daily
Maximum
lb/day
Monthly
Average
Concentration
Daily
Maximum
Concentration
Measurement
Frequency
Sample
Type
Sample
Location'
How (MCiD)
13
Continuous
Recording
1 or E
13OD, 5-day, 20°C
217.0
325.5
20.0 mg/L
30.0 mg/L
Weekly
Composite
E
l'otal Suspended Residue
20.0 mg/L
146.0 mg/L
Daily
Composite
E
N11,-N
65.0
97.5
6.0 mg/L
9.0 mg/L
Weekly
Composite
E
Dissolved Oxygen'
Daily
Grab
I:, U, I)
pl_r
Daily
Grab
E
Temperature °C
Daily
Grab
E, U, D
Fecal Coliform (geometric mean)
Weekly
Grab
E, U, D
Total Nitrogen (I"KN+NO2+NO,)
Quarterly
Composite
E
Total Phosphorus
Quarterly
Composite
E
Conductivity
See Note '
Grab
U, D
Oil and Grease
10.0 mg/L
15.0 rng/L
Weekly
Grab
E
Lead
2/Month
Composite
E
Fluoride
5.4 ing/L
Weekly
Composite
E
Zinc
2/Month
Composite
E
Copper
2/Month
Composite
E
Chloride
2/Month
Composite
E
Chronic Toxicity
Quarterly
Composite
E
Notes:
Sample Locations: E - Effluent, I — Influent, U — Upstream at NCSR 1323, D — Downstream at NCSR 1305; upstream and downstream samples shall be grab samples. Stream samples shall
be collected three times per week during June, July, August, and September and once per week during the remaining months of the year.
'- The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L.
3 The pl l shall not be less than 6.0 standard units nor greater than 9.0 standard units.
d Chronic Toxicity (Ceriodaphnia) P/F a, 33 %; January, April, July, October; Sec A(3) of the Supplement to Effluent Limitations page; collection of the composite toxicity sample shall
coincide with composite samples for lead, fluoride, zinc, copper, and chloride.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

04/06/99 09:17 PPG I ND. ENG. SHELBY NC -> 919 733 0719
NO.855 902
PPG industries, 940 Washburn Switch oad, Shelby, N.C. 28150
April E, 1999
Lacy Ballard, R. E. M.
Staff Engineer, Environmental
Mr. Mark McIntire
Division of Water Quality
NC DENR
PO, Box 29535
Raleigh, N.C. 2 /6'2d-0535
Ref: NPDES Permit No. NC0004685
PPG Industries Fiber Glass Products - Shelby
Dear Mr. McIntire:
704-434-2261
Extension 544
[e-mail]
Thank you for reviewing the new NPDES permit with m by telephone. As we discussed, PPG
would like to request that the monitoring frequency for : OD and ammonia remain at weekly
rather than change to daily in the new permit.
Effluent ammonia averages are typically less than 0.5 m . I arid with a maximum of 5.8 mgll
during the past four years. Effluent BOD has averaged to S mg/1 with a maximum of 22,7 mg/l,
other that a one time upset condition. Additional eftlue monitoring does not appear to be
needed
Thank you for your consideration.
Sincerely,
d