The Chemours Company — Hazardous Materials Safety Interpretation

Page 1U.S. Department of Transportation 1200 New Jersey Avenue, SE Washington, DC 20590 Materials Safety Pipeline and Hazardous Administration MAY 3 1 2018 Randolph Martin The Chemours Company 1007 Market Street, Room 2024 Wilmington, DE 19899 Reference No. 18-0009 Dear Mr. Martin: This letter is in response to your January 11, 2018, email requesting clarification of the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180) applicable to bulk packaging requirements for "UN1689 Sodium cyanide, solid, 6.1, Packing Group (PG) I" and "UN3414 Sodium cyanide solution, 6.1, PG III." We have paraphrased and answered your questions as follows: Q1. You ask whether "UN1689 Sodium cyanide, solid, 6.1, PG I"' is authorized for transport in non-DOT specification cargo tank motor vehicles (CTMV). A1. The answer is no. Section 172.102(c)(3), Special Provision B69 authorizes several non- specification packagings for "UN1689 Sodium cyanide, solid, 6.1, PG I." It is the opinion of this Office that a non-specification CTMV is not an authorized packaging. Please note that alternate packaging methods for this material, such as a non-specification CTMV, may be authorized under the terms of an approval (see § 172.102(c)(3), Special Provision B77). Q2. You ask whether "UN3414 Sodium cyanide solution, 6.1, PG III" is authorized for transport in a non-DOT specification CTMV. A2. The answer is yes. Section 173.241(b) authorizes non-DOT specification CTMVs suitable for transport of liquids for "UN3414 Sodium cyanide solution, 6.1, PG III." I hope this information is helpful. Please contact us if we can be of further assistance. Sincerely, Chief, Standards Development Branch Standards and Rulemaking Division#

Page 2Patrick Cargo Tanks January, Ikeya CTR (PHMSA) From: INFOCNTR (PHMSA) 18-0009 Sent: Friday, January 12, 2018 2:35 PM To: Hazmat Interps Subject: FW: Formal Interpretation Hello All, Below is another interp request from Mr. Martin. He and I have spoken over-the-phone regarding his question, but he would like written guidance confirming what we discussed. Regards, -Breanna From: Martin, Randy [mailto:RANDOLPH.MARTIN@chemours.com] Sent: Thursday, January 11, 2018 1:25 PM To: INFOCNTR (PHMSA) < INFOCNTR.INFOCNTR@dot.gov> Subject: Formal Interpretation This is to request a formal interpretation of the hazmat regulations, under 49 CFR 105.20. We spoke with a member of your staff on Jan 10 concerning the transport of 2 hazardous materials in non-DOT specification cargo tank motor vehicles. She indicated that these motor vehicles are authorized packagings for both materials and we wish to confirm. The hazardous materials are correctly classified as: UN1689 Sodium Cyanide, Solid 6.1 PG I and: UN3414 Sodium Cyanide Solution 6.1 PG III Our question is - are these materials authorized for transport in non-DOT specification cargo tank motor vehicles? We believe thạt both are: UN1689 under 172.102(c)(3) Special Provision B69, and UN3414 under 173.241. Thanks for your prompt attention to this request and please let me know if you have any questions.#

Page 3Randolph Martin Sr. Consultant, Hazardous Materials Distribution 302-383-4174 mobile 302-773-2266 office The Chemours Company 1007 Market Street, Rm 2024 Wilmington, DE 19899 Chemours™ Linkedin | Twitter | Chemours.com This communication is for use by the intended recipient and contains information that may be privileged, confidential or copyrighted under applicable law. If you are not the intended recipient, you are hereby formally notified that any use, copying or distribution of this e-mail, in whole or in part, is strictly prohibited. Please notify the sender by return e-mail and delete this e-mail from your system. Unless explicitly and conspicuously designated as "E-Contract Intended", this e- mail does not constitute a contract offer, a contract amendment, or an acceptance of a contract offer. This e-mail does not constitute a consent to the use of sender's contact information for direct marketing purposes or for transfers of data to third parties. Francais Italiano Deutsch Portuges Espanol Japanese Chinese Korean https://www.chemours.com/Chemours Home/en US/email disclaimer.html#