UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Piedmont Natural Gas Company, Inc.
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(Exact name of registrant as specified in its charter)

Not Applicable
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Former name or former address, if changed since last report

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[  ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01 Other Events.

On April 22, 2016, Constitution Pipeline Company, LLC (Constitution), in which Piedmont Natural Gas Company, Inc. (the Company) holds a 24% membership interest, announced that the New York State Department of Environmental Conservation (NYDEC) denied Constitution’s application for a Section 401 Water Quality Certification (Certification) for the New York State portion of Constitution's proposed 124-mile pipeline that would bring Appalachian natural gas supplies from Pennsylvania to northeast US markets (the Project). Constitution stated that it remains steadfastly committed to pursuing the Project and that it intends to pursue all available options to challenge the legality and appropriateness of NYDEC’s decision.

In light of the denial of the Certification and the anticipated actions to challenge the decision, Constitution has revised its target in-service date to the second half of 2018, assuming that the challenge process is satisfactorily and promptly concluded. Constitution is evaluating the impacts of the denial of the Certification on the Project, and the Company is evaluating the impact on its investment in Constitution. The Company believes that the denial of the Certification and resulting delay in the Project’s in-service date will have no material impact on the proposed acquisition of the Company by Duke Energy Corporation, expected to close by the end of 2016.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.