2022.02.25_CCO.p.28_Chemours Paragraph 21 Extension Letter

February 25, 2022

Ms. Dawn Hughes
Plant Manager
Chemours Fayetteville Works
22828 NC Highway 87 W
Fayetteville NC 28306

Re: Consent Order Paragraph 21 Extension Request

Dear Ms. Hughes,

Paragraph 21 of the Consent Order requires that Chemours sample “drinking water wells
for a distance of at least one-quarter (1/4) mile beyond the nearest well with test results showing
a quantifiable level of any PFAS listed in Attachment C above 10 ng/L” and that “[s]uch testing
shall be completed within eighteen (18) months of entry of this Order.” Pursuant to these
requirements in paragraph 21, Chemours has been conducting its Adaptive Step Out and Infill
Sampling Program (the “Sampling Program”), which has involved sampling drinking water wells
at over 8,700 residences around the plant site. Chemours has noted to DEQ that delineation has
been completed in sectors 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and delineation remains in
progress in sectors 1, 2, and 16. DEQ is currently reviewing this information.

Chemours previously requested and DEQ approved, pursuant to paragraph 25 of the
Consent Order, an extension of 3 months, to February 25, 2022, to complete the Sampling
Program. DEQ received the request for extension of the deadline in paragraph 21 of the consent
order from Chemours on February 17, 2022. Therefore, DEQ hereby grants an extension of 3
months, until May 25, 2022 for the company to comply with the requirements of paragraph 21 of
the Consent Order.

Sincerely,

Michael E. Scott, Director
Division of Waste Management, NC DEQ