From: Stock, Curtis (MPCA)

To: Hancy, Cindy Wang

Subject: RE: Cr Electroplating Information Request - US EPA

Date: Thursday, February 17, 2011 12:47:02 PM

Attachments: MN Cr Electroplating Plant List 2 7 11.xls

Hard Chrome Test Report Aug09.doc.pdf

Hard Chrome NOC Aug09 test.doc

Cindy,

I have looked up all the facilities. Records were not found for many of them.

Many had registration permits with no test requirements.

Only one facility had test data and that is attached to this email.

In the last column of the table everything that says “permit no testing requirements” has a permit

that can be accessed through the MPCA website (link below). The Hard Chrome permit is also

accessed there.

http://www.pca.state.mn.us/index.php/air/air-permits-and-rules/air-permits-and-forms/airpermits-issued-in-minnesota/air-permits-issued-in-minnesota.html

Curt Stock

Pollution Control Specialist Senior

Minnesota Pollution Control Agency

520 Lafayette Road No.

St. Paul, Minnesota 55155-4194

651-757-2757

From: Hancy, Cindy Wang [mailto:chancy@rti.org]

Sent: Tuesday, February 15, 2011 8:48 AM

To: Stock, Curtis (MPCA)

Subject: FW: Cr Electroplating Information Request - US EPA

Curtis,

I just wanted to follow up with you on the Cr Electroplating information request we spoke about

last week.

Thanks,

Cindy Wang Hancy

RTI International

P.O. Box 12194Research Triangle Park, NC 27709

Phone: (919) 541-6623

Fax: (919) 316-3420

From: Hancy, Cindy Wang

Sent: Tuesday, February 08, 2011 2:02 PM

To: 'curtis.stock@state.mn.us'

Cc: Marinshaw, Richard

Subject: Cr Electroplating Information Request - US EPA

Curtis,

Thank you for speaking with me today. As I explained in our conversation, the U.S. Environmental

Protection Agency (EPA), is performing the residual risk and technology review of the National

Emission Standards for Hazardous Air Pollutants: Hard and Decorative Chromium Electroplating

and Chromium Anodizing Tanks (Chromium Electroplating NESHAP). Amendments to the NESHAP

were proposed on October 21, 2010 (75 FR 65068), and EPA is under a court-ordered deadline to

finalize the amendments by June 30, 2011. Several comments received on the October 2010

proposal stated that EPA lacked adequate data to fully assess the risk associated with emissions

from chromium electroplating sources; other commenters stated that EPA did not account for the

facilities with the highest risk. In response to those comments, EPA is now trying to collect data on

potentially high risk facilities. RTI International is assisting EPA in this effort by contacting several

State agencies to request data on the 5 to 10 facilities in those States that are likely to have the

highest risk.

Attached are two files, one containing the facilities we have listed for MN, the other is a file that

lists the specific types of data needed, we would like to collect as many of the listed items as

possible for each facility. The most critical data needs are:

For each chromium electroplating or anodizing tank:

· Type of chromium electroplating process (hard, decorative, trivalent, anodizing)

· Surface dimensions (length and width)

· Rectifier capacity (amperes)

· Limits on rectifier operation (ampere-hours per year)

· Maximum permitted process operating hours (hours per year)

· Typical process operating hours (hours per year)

· Emission control method

· Emission test data (complete test report, if available)

· Any updates to Cr. Electroplating facilities listed in the attachment (plant closings, etc.)

In order to remodel risk for this source category and re-evaluate the regulatory options for

reducing risk to acceptable levels, while meeting the June 30, 2011 deadline, we would like to

obtain the requested information as soon as possible, and no later than the end of February 2011.

If you have any questions about this request or would like to discuss any issues related to the

Chromium Electroplating NESHAP, you can contact Phil Mulrine with EPA's Office of Air QualityPlanning and Standards. Phil can be reached by phone at: 919-541-5289, or by email at:

mulrine.phil@epa.gov

.

Thanks again for your help, and I look forward to talking to you soon.

Cindy Wang Hancy

RTI International

P.O. Box 12194

Research Triangle Park, NC 27709

Phone: (919) 541-6623

Fax: (919) 316-3420