FORM OF BORROWING BASE CERTIFICATE Clause Samples

FORM OF BORROWING BASE CERTIFICATE. The form of the Borrowing Base Certificate at Exhibit 2.1.4 of the Loan Agreement shall be replaced by the form of the Borrowing Base Certificate attached to this Amendment as Exhibit 2.1.4

FORM OF BORROWING BASE CERTIFICATE. The undersigned, being a Senior Officer (as defined in the Loan Agreement described below) of INTEGRATED ELECTRICAL SERVICES, INC., a Delaware corporation (individually, and in its capacity as the representative of the other Credit Parties (as defined in the Loan Agreement), “Parent”), hereby gives this Borrowing Base Certificate to BANK OF AMERICA, N.A., as agent pursuant to the below described Loan Agreement (in such capacity, “Agent”), and the Lenders party to such Loan Agreement, pursuant to the terms and conditions of a Loan and Security Agreement dated as of May 12, 2006 (the “Loan Agreement”) by and among the Lenders from time to time party thereto, Agent, Parent, the other Borrowers and the other Credit Parties party thereto. All capitalized terms not defined herein have the meanings given them in the Loan Agreement. The undersigned hereby certifies that:

FORM OF BORROWING BASE CERTIFICATE. This Borrowing Base Certificate (the "Certificate") is delivered pursuant to Section 9.2 of the Revolving Credit and Security Agreement, dated September 28, 2011, (as the same may hereafter be amended, restated, supplemented or otherwise modified from time to time, the "Credit Agreement"), by and among Horsehead Corporation, a Delaware corporation (the "Borrower"), the Guarantors (as defined therein) party thereto, PNC Bank, National Association ("PNC Bank") and various other financial institutions from time to time (PNC Bank and such other financial institutions are each a "Lender" and collectively, the "Lenders"), and PNC Bank, as administrative and collateral agent for the Lenders (in such capacity, the "Agent"). Unless otherwise defined herein, capitalized terms used herein have the meanings provided in the Credit Agreement. The undersigned hereby certifies that [he/she] is the [President] [Chief Financial Officer] [Controller] of the Borrower and that, as such, [he/she] is authorized to execute this Certificate on behalf of the Borrower and further certifies that: For purposes of this Certificate, the date for which the Formula Amount is being calculated is _______________, 201_ (the "Calculation Date").

FORM OF BORROWING BASE CERTIFICATE. To: The PrivateBank and Trust Company Please refer to the Credit Agreement dated as of March 5, 2009 (as amended, restated, supplemented or otherwise modified from time to time, the “Credit Agreement”) among the undersigned Borrowers and The PrivateBank and Trust Company. This certificate (this “Certificate”), together with supporting calculations attached hereto, is delivered to you pursuant to the terms of the Credit Agreement. Capitalized terms used but not otherwise defined herein shall have the same meanings herein as in the Credit Agreement. Each Borrower hereby certifies and warrants to the Lender that at the close of business on ______________, ____ (the “Calculation Date”), the Borrowing Base was $_____________, computed as set forth on the schedule attached hereto. The Borrowers have caused this Certificate to be executed and delivered by its officer thereunto duly authorized on ___________, ______. WESTELL TECHNOLOGIES, INC., as a Borrower and Borrower Representative By: Name:____________________________________ Title: WESTELL, INC., as a Borrower By: Name:____________________________________ Title: TELTREND LLC, as a Borrower By: Name:____________________________________ Title: CONFERENCE PLUS, INC., as a Borrower By: Name:____________________________________ Title: 14766353\V-9 Dated as of [_________________]

FORM OF BORROWING BASE CERTIFICATE. This Borrowing Base Certificate (the “Certificate”) is delivered pursuant to Section 9.3.4 of the Credit Agreement, dated as of July 13, 2017, by and among Mastech Digital, Inc., a Pennsylvania corporation (“MDI”), each of the other Borrowers party thereto from time to time, each of the Guarantors (as defined therein) party thereto from time to time, PNC Bank, National Association (“PNC Bank”) and various other financial institutions from time to time party thereto (PNC Bank and such other financial institutions are each a “Lender” and collectively, the “Lenders”) and PNC Bank, as administrative agent for the Lenders (in such capacity, the “Administrative Agent”) (as may be amended, modified, supplemented or restated from time to time, the “Credit Agreement”). Unless otherwise defined herein, capitalized terms used herein have the meanings provided in the Credit Agreement. The undersigned hereby certifies that [he/she] is an Authorized Officer of the Borrowing Agent and that, as such, [he/she] is authorized to execute this Certificate on behalf of itself and each other Revolving Borrower and further certifies that: For purposes of this Certificate, the date for which the US Borrowing Base and Canadian Borrowing Base is being calculated is , 201 (the “Calculation Date”).

FORM OF BORROWING BASE CERTIFICATE. Exhibit A to the Credit Agreement is hereby replaced by Exhibit A hereto.

FORM OF BORROWING BASE CERTIFICATE. Pursuant to the provisions of the Revolving Credit Agreement, dated as of August 21, 2003 (as amended, restated, supplemented and/or modified from time to time, the “Credit Agreement”) by and among SHERIDAN ACQUISITION CORP., THE SHERIDAN GROUP, INC. and FLEET NATIONAL BANK. Capitalized terms used herein without definition shall have the meaning assigned to such terms in the Credit Agreement.

FORM OF BORROWING BASE CERTIFICATE. Please refer to the Credit Agreement dated as of December 3, 2012 (as amended, restated or otherwise modified from time to time, the "Credit Agreement") among the undersigned ("Borrowers"), the lenders party thereto from time to time, as Lenders, and Atalaya Administrative LLC, as administrative agent for Lenders. This certificate (this "Certificate"), together with supporting calculations attached hereto, is delivered to Administrative Agent and Lenders pursuant to the terms of the Credit Agreement. Capitalized terms used but not otherwise defined herein shall have the same meanings herein as in the Credit Agreement. Borrowers hereby certify and warrant that at the close of business on __________________ (the "Calculation Date"), the Borrowing Base was $_____________, computed as set forth on the schedule attached hereto, and Borrowing Availability was $_____________, computed as set forth on the schedule attached hereto. Borrowers have caused this Certificate to be executed and delivered by its officer thereunto duly authorized on _____________. Focus Fiber Solutions, LLC, as Borrower Representative By: Optos Capital Partners, LLC, sole Member and Manager of each of the foregoing limited liability companies By: Focus Venture Partners, Inc., its sole Member and Manager By: __________________________ C▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇ President

FORM OF BORROWING BASE CERTIFICATE. Exhibit 7. 1.1 Jurisdictions in which Borrower and each Subsidiary is Authorized to do Business Exhibit 7.1.4 Capital Structure of Borrower Exhibit 7.1.5 Legal Names Exhibit 7.1.13 Surety Obligations Exhibit 7.1.14 Tax Identification Numbers of Subsidiaries of Borrower