October 22, 2009

Mr. Bob Kantor Hard Chrome, Inc.

2631 Second Street Northeast Minneapolis, MN 55418

RE: Notice of Compliance for the August 12, 2009, Performance Test on the Hard Chromium Plating Emission Units (EU004, EU005/CE001) Pursuant to Ai r Emission Permit No. 05300247

- 001 (Permit), Test Plan Approval dated August 4, 2009, and MPCA letter dated May 5, 2009

Dear Mr. Kantor:

The Minnesota Pollution Control Agency (MPCA) staff has reviewed the final test report for the test conducted

on the emission unit(s) referenced above at the Hard Chrome, Inc. (Company) facility located in Minneapolis, Minnesota. The test report was received September 24, 2009, and the microfiche/compact disc copy of the test report was received September 29, 2009.

The MPCA staff has determined that the test results demonstrate the following under test conditions:

SUMMARY OF PERFORMANCE TEST RESULTS

Emission Unit

Tested Limitation

Basis Pollutant and

Emission Limit Test Result Compliance

Status Chromium Plating

Emi ssion Units EU004, EU005 SV001, CE001 40 CFR § 63.342(c)(1)(i) Chromium :

≤ 0.015 mg/dscm Chromium :

0.0015 mg/dscm Compliant

The test was conducted while operating with an average total amperage of 10,092. The mist eliminator inlet had

an average press ure drop of 1.5 inches of water column. These parameters are within the ranges defined in the approved test plan. Operating limits based on these conditions are defined in Item 1 of this letter.

In addition, please be advised of the following:

1

. The follow ing operating limit applies pursuant to Minn. R. 7017.2025, subp. 3. This limit applies in addition to any operating limit or requirement that already exists, and it does not serve to relax any limit or requirement except where prior authorization has been given by the MPCA staff. Note: Your facility has a Title V (Part 70) Permit; therefore your permit will be re

- opened (under Minn. R. 7007.1600, subp. 1(D)) in order to add the new operating limit. This letter serves as your 30

- day notice of the MPCA's

in tent to amend your permit. The new operating limit is now effective and any operational changes shall be made upon receipt of this letter.Emission

Unit Production Limit Averaging Method

Mist

Eliminator

(CE001) Pressure Drop:

Not to exhibit less than 0.5 inches

of water column (≥ 0.5 in w.c.) Not to exhibit greater than 3.5 in w.c. (≤ 3.5w.c.) Instantaneous Reading taken once Daily Based on the average pressure drop reading observed during the most recent performance test. Record pressure drop at inlet of Mist Eliminator (CE001) at least once each day of operation.

The Company may not operate a control equipment unit at a less stringent rate than that listed in the table above unless it conducts a performance test at an alternate rate and the MPCA st aff determines compliance at that rate for the emission unit.

2

. If an operating/production limit is exceeded, it must be reported in accordance with the deviation reporting requirements of Minn. R. 7007.0800, subp. 6(A).

3

. The operating conditions met the wo rst

- case operating condition as defined in the approved test plan. However, please be aware that should operating practices change such that the current definition of worst

case becomes outdated, the MPCA may require a performance test at the new worst

- cas e condition.

4

. The Emission Inventory rule, Minn. R. 7019.3000 to 7019.3100, requires the calculation of emissions based on an established hierarchy. In the absence of Continuous Emission Monitor data meeting the requirements of Minn. R. 7019.3040, the next method of calculation, a performance test, must be used. When a performance test for particulate matter, particulate matter with an aerodynamic diameter less than or equal to a nominal ten micrometers, carbon monoxide, nitrogen oxides, sulfur oxides, vola tile organic compounds or lead is conducted and meets the requirements of Minn. R. 7017.2001 to 7017.2060, the results must be used to calculate emissions, unless specified otherwise by Minn. R. 7019.3000 to 7019.3100. It is the Company’s responsibility t o ensure the results of performance tests are accounted for in their annual emission inventory submittal. Note that the final decision to approve the emission factor for any given inventory year will be made by the Emission Inventory Coordinator.

If you h ave questions or comments regarding the content of this letter, please contact me at 651

- 757

- 2359.

Your continued cooperation is appreciated.

Sincerely,

Shanda L. Fisher Pollution Control Specialist Compliance and Enforcement Section

Industrial Division

SLF:rrh

cc: Brent Rohne, MPCA St. Paul Kelsey Suddard, MPCA St. Paul AQ Correspondence File No. 1687