Exhibit 3.7

CERTIFICATE OF LIMITED PARTNERSHIP

OF

Cypress energy partners, l.p.

This Certificate of Limited Partnership, dated September 19, 2013, has been duly executed and is filed pursuant to Section 17-201 of the Delaware Revised Uniform Limited Partnership Act (the “Act”) to form a limited partnership (the “Partnership”) under the Act.

1. Name. The name of the Partnership is “Cypress Energy Partners, L.P.”.

2. Registered Office; Registered Agent. The address of the registered office required to be maintained by Section 17-104 of the Act is:

1209 Orange Street

Wilmington, Delaware 19801

The name and the address of the registered agent for service of process required to be maintained by Section 17-104 of the Act is:

The Corporation Trust Company

1209 Orange Street

Wilmington, Delaware 19801

3. General Partner. The name and the mailing address of the general partner are:

Cypress Energy Partners GP, LLC

5727 S. Lewis Ave., Suite 500

Tulsa, Oklahoma 74105

4. This Certificate of Limited Partnership shall become effective upon filing with the Secretary of State of the State of Delaware.

[Signature page follows]

IN WITNESS WHEREOF, the undersigned has duly executed this Certificate of Limited Partnership as of the date first written above.

CYPRESS ENERGY PARTNERS, L.P.
By:	CYPRESS ENERGY PARTNERS GP, LLC, its general partner
By:	/s/ G. Les Austin
	Vice President and Chief Financial Officer