NCS000209 Cover Letter for Draft

Energy. Mineral
and Land Resources
ENVIRONMENTAL QUALITY
ROY COOPER
MICHAEL S. REGAN
WILLIAM E. (TOBY) VINSON, JR.
March 9, 2018
Ms. Angela Beck
Haynes International, Inc.
PO Box 677
158 N. Egerton Rd
Mountain Home, NC 28758
Subject: Draft NPDES Stormwater Permit
Permit No. NCS000209
Haynes International, Inc. dba Haynes Wire Co.
Henderson County
Dear Ms. Beck:
Enclosed with this letter is a copy of the draft stormwater permit for your facility. Please review
the draft carefully to ensure thorough understanding of the conditions and requirements it
contains.
The draft permit contains the following significant changes from the facility's current permit:
1. You are required to collect analytical and qualitative monitoring samples during
"measurable storm events" as defined in Part II, Section B. This term is different from the
"representative storm event" in earlier permits.
2. Requirements for the Stormwater Pollution Plan (SPPP) have been updated in Part II,
Section A.
3. Monitoring requirements remain very similar in the permit with required annual
monitoring for TSS and pH and monitoring for Ni in the 4th year of the permit. Stormwater
benchmarks remain in the permit with the Ni benchmark updated. Keep in mind that
benchmarks are not permit limits, but rather guidelines for implementing the Stormwater
Pollution Prevention Plan (SPPP). A benchmark exceedance is not a permit violation;
however, the permittee must respond to exceedances. The draft permit has modified the
tiered response process for benchmark exceedances consistent with other permits in our
program. Please become familiar with the tiered process as proper response under the
tiers may be enforceable items under your permit. Response to the tiered process may
State of North Carolina I Emoironmental Quality I Energy, Mineral and Land Resources
1612 Mail Service Center 1512 North Salisbury Street I Raleigh, NC 27699-1612
919 707 9200 T

NCS000209 Draft Permit
Page 2
include review of onsite conditions, installation of BMPs or requirements for more
frequent monitoring.
4. Vehicle maintenance (Tables 4 & 5) monitoring parameters have been revised. Non -Polar
Oil & Grease [EPA Method 1664 (SGT -HEM)] replaces Oil & Grease/TPH. The benchmark
for Non -polar Oil & Grease using this method is 15 mg/L. This requirement appears in all
individual stormwater permits; however, it only applies to facilities that perform onsite
vehicle maintenance activities. If the facility begins vehicle maintenance during the permit
cycle, the requirements shall apply. Also, pH monitoring is no longer required for
discharges only associated with vehicle maintenance activities.
5. Language has been added under Part II Section D to address potential responses to
qualitative monitoring issues.
6. A new section on Special Conditions has been added in Part II, Section E to comply with
federal regulations requiring electronic submittal of discharge monitoring reports. Our
electronic submittal process is not available for use at this time, but we will continue to
provide feedback on when this process will be available.
7. Civil and administrative penalty amounts have been updated to reflect current federal
law in Part III, Section A, 2(b) and (g).
Please review the draft permit and submit any comments to me no later than 30 days following
your receipt of the draft. Comments maybe emailed to meat bradley.bennett(@ncdenr.eov or
mailed to my attention at NC DEMLR, Stormwater Permitting Program, 1612 Mail Service Center,
Raleigh, NC 27699-1612. With this notification the Division will solicit comment on this draft by
publishing a notice in a local newspaper. Following the 30 day public comment period, the
Division will review comments and take appropriate action prior to issuance of the final permit.
If you have any questions, please email me or call me at [phone].
Sincerely,
344 -/3
Bradley Bennett
Stormwater Permitting Program
Attachment: Draft Permit NCS000209
cc: Stan Aiken, DEMLR Asheville Regional Office — via email
Stormwater Permitting Program Files