From: Barrows, Robin

To: Hancy, Cindy Wang

Cc: Cherry, Lori; Abraczinskas, Michael; Lasater, Richard

Subject: RE: Cr Electroplating Info Request - EPA

Date: Thursday, February 24, 2011 4:52:45 PM

Attachments: RTI NC Chrome Electroplaters.xlsx

Stack Tests.pdf

Ms. Hancy,

Attached you will find a spread sheet that has some of the data for which you were looking. DAQ

does not routinely collect detailed data for the rectifiers in their permitting process. I would

suggest querying the facilities directly for these data. Also attached are the stack test data that we

have available. Those data are also not routinely collected by DAQ. Please feel free to contact me

directly if you have further questions.

Regards,

Robin Barrows

Robin R. Barrows, Environmental Senior Scientist

Toxics Protection Branch

Technical Services Section

Division of Air Quality, NC DENR

1641 Mail Service Center

Raleigh, NC 27699-1641

phone: (919) 715-6319

FAX: (919) 733-1812

Robin.Barrows@ncdenr.gov

http://www.ncair.org

Opinions expressed in this message may not represent the policy of my agency. All email sent to or from this

sender may be subject to the North Carolina Public Records Law and may be disclosed to third parties.

Please consider the environment - do you really need to print this document?

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

Sent: Thursday, February 03, 2011 3:04 PM

To: Barrows, Robin

Subject: Cr Electroplating Info Request - EPA

Robin,

Thank you for speaking with me today. I have received what you sent to Anne Pope and will review

that data to see if it contains anything we may need. Below is a bulleted list of the most important

information we are looking for. Please see if there is anything you may find that would be helpful.

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 of 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.

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)

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 Quality

Planning 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