From: Chuck French/RTP/USEPA/US To: "Higgins, Cortney" <Cortney_Higgins@omb.eop.gov> Cc: Ann Johnson/DC/USEPA/US@EPA, Phil Mulrine/RTP/USEPA/US@EPA, Mark Morris/RTP/USEPA/US@EPA Date: 07/19/2012 02:41 PM Subject: Re: RIN 2060 - AQ60 - Chromium RTR -- Requested Documents 

### Hi Cortney, I just realized that the RTC that I sent you earlier today still had a comment bubble (that should have been deleted), and I found a few small typos. So, I am resending a revised clean version of the RTC. Attached is the revised "Responses to Comments (RTC)" document. Please let us know if you need anything else. Thanks. Chuck (See attached file: Cr
- Electroplating
- Steel
- Pickling
- RTC
- 7
- 19
- 2012
- revised.docx) Chuck French --- 07/19/2012 12:58:42 PM --- Hi Cortney, Attache d are the "Responses to Comments (RTC)" document; the "Procedures for Det From: Chuck French/RTP/USEPA/US To: "Higgins, Cortney" <Cortney_Higgins@omb.eop.gov> Cc: Ann Johnson/DC/USEPA/US@EPA, Phil Mulrine/RTP/USEPA/US@EPA Date: 07/19/2012 12:58 PM Subject: Re: RIN 2060 - AQ60 - Chromium RTR -- Requested Documents 

### Hi Cortney, Attached are the "Responses to Comments (RTC)" document; the "Procedures for Determining Control Costs and Cost Effectiveness for Chromium Electroplating Supplemental Proposal memorandum"; and the "Information on non - PFOS Fume Suppressants in Minnesota Chromium Electroplating Facilities memorandum", which includes 3 attachments (3 Excel tables). I believe that we have now sent you all of the documents in the list (shown in ema il below). Please let us know if you need anything else. Thanks. Chuck [attachment "Cr - Electroplating - Steel - Pickling - RTC - 7 - 19 - 2012.docx" deleted by Chuck French/RTP/USEPA/US] [attachment "EPA - HQ - OAR - 2010 - 0600 - 0602.pdf" deleted by Chuck

### French/RTP/USEP A/US] [attachment "non - PFOS - data - Memo - 6 - 27 - 12.doc" deleted by Chuck French/RTP/USEPA/US] [attachment "Attachment 1 - July - 11 - 2012.xls" deleted by Chuck French/RTP/USEPA/US] [attachment "Attachment 2 0 6 - 6 - 12.xls" deleted by Chuck French/RTP/USEPA/US] [att achment "Attachment 3.xlsx" deleted by Chuck French/RTP/USEPA/US] "Higgins, Cortney" --- 07/17/2012 09:16:30 AM --- Hi Chuck, I hope you had a good weekend. From: "Higgins, Cortney" <Cortney_Higgins@omb.eop.gov> To: Chuck French/RTP/USEPA/US@EPA Cc: Ann J ohnson/DC/USEPA/US@EPA Date: 07/17/2012 09:16 AM Subject: RIN 2060 - AQ60 - Chromium RTR -- Requested Documents Hi Chuck, I hope you had a good weekend. Can you please send the following documents referenced in the preamble:

- Development of Revised Surface Tension Limits for Chromium Electroplating and Anodizing Tanks Controlled with Wetting Agent Fume Suppressants document (p 18)

- Revised Procedures for Determining Control Costs and Cost Effectiveness for Chromium Electroplating and Anodizing (p. 2 6)

- Responses to Comments (RTC) document (p 26)

- Emissions Reductions and Cost Effectiveness of HEPA Filter Retrofits for Chromium Electroplating, and Emissions Reductions and Cost Effectiveness of Composite Mesh Pads for Chromium Electroplating (p 54)

- “cost analysis technical memo” (p 61)

- Procedures for Determining Control Costs and Cost Effectiveness for Chromium Electroplating Supplemental Proposal memorandum (p 77) (It’s not clear this is the same as the document cited on page 26).

- Information o n non - PFOS Fume Suppressants in Minnesota Chromium Electroplating Facilities memorandum (p 78)

- Economic Impact Analysis for Risk and Technology Review: Chromium Electroplating (p 97)

- Risk Assessment (and supporting documents) – can you please provide a redline comparison of the risk assessment main document compared to the proposal (not the appendices)? Can you also send this as a word document.

- EJ or Demographics analysis Please let me know if you have any questions. Regards, Cortney

_____________ ___________________________________ Cortney Higgins Policy Analyst OMB/OIRA/NRE 202.395.7856 chiggins@omb.eop.gov