Document:

EX-10.18.12

 Exhibit 10.18.12 

 
 

 
 801 Houston Street 
 Fort
Worth, Texas 76102 
 June 15, 2016 
 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 Attention: Gary B.
Humphreys 
 4413 Carey Street 
 Fort Worth, Texas 76119 

Re:    Fourth Amendment to Loan Agreement 

Ladies and Gentlemen: 
 This letter (this
“Amendment”) amends the Loan Agreement dated June 15, 2014, among MAALT, L.P., a Texas limited partnership, and GHMR OPERATIONS, L.L.C., a Texas limited liability company (collectively
“Borrowers”); DENETZ LOGISTICS, L.L.C., a Texas limited liability company, GARY B. HUMPHREYS, MARTIN W. ROBERTSON, and the Trust Guarantors
(as defined below) (collectively “Guarantors”); and PLAINSCAPITAL BANK (“Lender”), as amended by the First Amendment dated February 11, 2015, the Second Amendment
dated June 15, 2015, and the Third Amendment dated February 9, 2016 (collectively the “Loan Agreement”). Capitalized terms below have the meanings assigned in the Loan Agreement. 

1.    Revolving Loan. Borrowers have requested that Lender renew and extend the Revolving Loan, and Lender has
agreed on the terms set forth in this Amendment. Subsection (a) of Section lA of the Loan Agreement is hereby amended to read as follows: 

“(a) Subject to the terms and conditions set forth in the Loan Agreement and the other Loan Documents, Lender agrees to
make a revolving loan to MAALT in the maximum principal amount of $2,000,000.00 (the “Revolving Loan”) on the terms set forth in the promissory note attached as Exhibit E to this Amendment (the “Revolving
Note”), for the purposes set forth in the Loan Agreement. Subject to the terms and conditions of the Loan Agreement, MAALT may borrow, repay, and reborrow on a revolving basis from time to time during the period commencing on the date of
this Amendment and continuing through 11:10 a.m. (Fort Worth, Texas time) on June 15, 2017 (the “Termination Date”), such amounts as MAALT may request under the Revolving Loan; provided, however, the total principal amount
outstanding at any time shall not exceed the lesser of (i) the aggregate sums permitted under the Borrowing Base, or (ii) $2,000,000.00. All sums advanced under the Revolving Loan, together with all accrued but unpaid interest thereon, shall be
due and payable in full on the Termination Date.” 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 June 15, 2016 

Page 2 of 8 
  

 2.    Financial Covenants. The financial covenants in
Section 7 of the Loan Agreement are hereby amended to read as follows: 

“7.    Financial Covenants. Until the Loans and all other Secured Obligations are fully paid
and satisfied and any commitment of Lender under the Loan Agreement is terminated, MAALT shall, unless Lender otherwise consents in writing, maintain the following financial covenants: 

(a)    MAALT shall maintain at the end of each fiscal quarter, commencing with the fiscal quarter ending
June 30, 2016, a Debt Service Coverage Ratio greater than or equal to 1.2 to 1.0, calculated for the prior four fiscal quarters on a rolling basis. As used in the Loan Agreement, the following terms have the meanings assigned below: 

(i)    “Debt Service Coverage Ratio” is defined as the ratio of (1) EBIDA for the
prior four fiscal quarters on a rolling basis, less the amount of all Permitted Distributions made by MAALT during such period, divided by (2) the sum of the current maturities of long term debt from the previous fiscal year end,
plus interest expense for the prior four fiscal quarters. 
 (ii)    “EBIDA” is
defined as the sum of MAALT’s net income for the applicable period, plus, without duplication and to the extent deducted in the calculation of net income for such period, (1) depreciation, amortization, and other non-cash charges, and (2) interest expense. 
 (b)    MAALT shall
maintain at the end of each fiscal quarter, commencing with the fiscal quarter ending June 30, 2016, a Quarterly Debt Service Coverage Ratio greater than or equal to 1.0 to 1.0, calculated for the prior fiscal quarter. As used in the Loan
Agreement, the following terms have the meanings assigned below: 
 (i)    “Quarterly Debt
Service Coverage Ratio” is defined as the ratio of (1) EBIDA for the most-recent fiscal quarter, less the amount of all Permitted Distributions made by MAALT during such period, divided by (2) the sum of the current
maturities of long term debt from the previous fiscal quarter ended, divided by four, plus interest expense for the most recent fiscal quarter. 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 June 15, 2016 

Page 3 of 8 
  

 (c)    MAALT shall maintain at the end of each fiscal
quarter, commencing with the fiscal quarter ending June 30, 2016, a Leverage Ratio less than or equal to 2.0 to 1.0. As used in the Loan Agreement, the following terms have the meanings assigned below: 

(i)    “Leverage Ratio” is defined as the ratio of (1) MAALT’s total
liabilities, divided by (2) Tangible Net Worth. 
 (ii)    “Tangible Net
Worth” is defined as MAALT’s total assets, minus MAALT’s intangible assets, including, without limitation, all notes receivable from partners, members, and affiliates, minus MAALT’s total liabilities, excluding
any liabilities that have not been subordinated in Proper Form. 
 (d)    MAALT shall maintain at the end
of each fiscal quarter, commencing with the fiscal quarter ending June 30, 2016, a Cash Flow Leverage Ratio less than or equal to 4.0 to 1.0 for the fiscal quarters ending June 30, 2016, September 30, 2016, December 31, 2016, and
March 31, 2017, and less than or equal to 3.0 to 1.0 for the fiscal quarter ending June 30, 2017, and each fiscal quarter thereafter, calculated for the prior four fiscal quarters on a rolling basis. As used in the Loan Agreement, the
following terms have the meanings assigned below: 
 (i)    “Cash Flow Leverage Ratio”
is defined as the ratio of (1) Senior Debt, divided by (2) EBIDA for the prior four fiscal quarters on a rolling basis, less the amount of all Permitted Distributions made by MAALT during such period. 

(ii)    “Senior Debt” is defined as the sum of the aggregate principal amount outstanding
on the Loans, plus the aggregate principal amount outstanding owed by MAALT with respect to all other obligations for borrowed money, excluding any borrowings that have been subordinated in Proper Form, plus all capital lease
obligations of MAALT. 
 Unless otherwise specified, all accounting and financial terms and covenants set forth above are to be determined
according to Accounting Principles, consistently applied.” 
 3.    Compliance Certificate. Subparagraph
(5) of Subsection (a) of Section 8 of the Loan Agreement is hereby amended to read as follows: 

“(5) With the annual and quarterly financial statements required for MAALT under the Loan Agreement, a Compliance
Certificate in the form of Exhibit B attached to this Amendment, signed by authorized officers of Borrowers and certifying compliance with the financial covenants and other matters in the Loan Agreement;” 

4.    Conditions Precedent. The obligation of Lender to enter into this Amendment and renew and extend the
Revolving Loan is subject to Borrower’s satisfaction, in Lender’s sole discretion, of the following conditions precedent: 

(a)    Borrower shall be in compliance in all material respects with the conditions set forth in Subsection (a) of
Section 4 of the Loan Agreement as of the date of this Amendment, and all representations and warranties set forth in Section 5 of the Loan Agreement must be true in all material respects as of the date of this Amendment. 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 June 15, 2016 

Page 4 of 8 
  

 (b)    the negotiation, execution, and delivery of Loan Documents in
Proper Form, including, but not limited to, the following: 
  

	 	(i)	 this Amendment; 

  

	 	(ii)	 the Revolving Note; 

  

	 	(iii)	 Ratification of Guaranties signed by General Partner, Company Guarantors, and the Trusts;

  

	 	(iv)	 a Borrowing Resolution from MAALT. 

(c)    a Material Adverse Change shall not have occurred. 

5.    Confirmations. (a) As security for the Notes, Borrowers previously executed the Security Documents.
Borrowers ratify and confirm the Security Documents, acknowledge that they are valid, subsisting, and binding, and agree that the Security Documents secure payment of the Notes (including the Term Note, the Revolving Note, and the Second Term Note),
the Loans (including the Term Loan, the Revolving Loan, and the Second Term Loan), and all other Secured Obligations. 

(b)    In connection with the Notes, Guarantors executed the Guaranties. Guarantors ratify and confirm the Guaranties,
acknowledge that the Guaranties are valid, subsisting, and binding upon Guarantors, and agree that the Guaranties guarantee payment of the Notes (including the Term Note, the Revolving Note, and the Second Term Note), the Loans (including the Term
Loan, the Revolving Loan, and the Second Term Loan), and all other Secured Obligations. 
 (c)    Borrowers hereby
represents to Lender that all representations and warranties set forth in Section 5 of the Loan Agreement are true and correct in all material respects as of the date of execution of this Amendment; and that Borrower is in compliance in all
material respects as of the date of execution of this Amendment with all covenants set forth in Section 6 of the Loan Agreement, all financial covenants set forth in Section 7 of the Loan Agreement, and all reporting requirements set forth
in Section 8 of the Loan Agreement. 
 6.    Validity and Defaults. The Loan Agreement, as amended, remains
in full force and effect. Borrowers and Guarantors acknowledge that the Loan Agreement, the Notes, the Security Documents, the Guaranties, and the other Loan Documents are valid, subsisting, and binding upon Borrowers and Guarantors; no uncured
breaches or defaults exist under the Loan Agreement, as amended; and no event has occurred or circumstance exists which, with the passing of time or giving of notice, will constitute a default or breach under the Loan Agreement, as amended.
Borrowers and Guarantors ratify the Loan Agreement, as amended. 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 June 15, 2016 

Page 5 of 8 
  

 7.    Regulation B — Notice of Joint Intent. Federal
Regulation B (Equal Credit Opportunity Act) requires Lender to obtain evidence of Borrowers’ intention to apply for joint credit. Borrowers’ and Guarantors’ signatures below shall evidence such intent. Borrowers’ and
Guarantors’ intent shall apply to future related extensions of joint credit and joint guaranty. 

8.    Counterparts. This Amendment and the related Loan Documents may be executed in counterparts, and Lender is
authorized to attach the signature pages from the counterparts to copies for Lender and Borrowers and filing counterparts. At Lender’s option, this Amendment and the related Loan Documents may also be executed by Borrowers and Guarantors in
remote locations with signature pages faxed or scanned and e-mailed to Lender. Borrowers and Guarantors agree that the faxed and scanned signatures are binding upon Borrowers and Guarantors, and Borrowers and
Guarantors further agree to promptly deliver the original signatures for this Amendment and the related Loan Documents by overnight mail or expedited delivery. It will be an Event of Default if Borrowers or Guarantors fail to promptly deliver all
required original signatures. 
 9.    Captions. Captions are for convenience only and should not be used in
interpreting this Amendment. 
 10.    Final Agreement. (a) In connection with the Loans, Borrowers,
Guarantors, and Lender have executed and delivered this Amendment, the Loan Agreement, and the Loan Documents (collectively the “Written Loan Agreement”). 

(b)    It is the intention of Borrowers, Guarantors, and Lender that this paragraph be incorporated by reference into each
of the Loan Documents. Borrowers, Guarantors, and Lender each warrant and represent that their entire agreement with respect to the Loans is contained within the Written Loan Agreement, and that no agreements or promises have been made by, or exist
by or among, Borrowers, Guarantors, and Lender that are not reflected in the Written Loan Agreement. 
 (c)    THE LOAN
AGREEMENT, AS AMENDED, REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN AGREEMENTS BETWEEN THE PARTIES. 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 June 15, 2016 

Page 6 of 8 
  

 If the foregoing correctly sets forth your understanding of our agreement, please sign and
return one copy of this Amendment. 
  

			
	 Yours very truly,
  

PLAINSCAPITAL BANK

		
	By:	 	/s/ Keeton Moore
		 	 Keeton Moore,

Senior Vice President

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 June 15, 2016 

Page 7 of 8 
  

 Accepted and agreed to 

this      day of August, 2016: 

BORROWERS: 
  

			
	 MAALT, L.P.,
  

a Texas limited partnership

		
	By:	 	 Denetz Logistics, L.L.C.,
 a Texas limited
liability company,
 its general partner

  

					
		 	By:	 	/s/ Gary B. Humphreys
		 		 	 Gary B. Humphreys, Manager

  

			
	 GHMR OPERATIONS, L.L.C.,
 a Texas
limited liability company

		
	By:	 	/s/ Gary B. Humphreys
		 	 Gary B. Humphreys, Manager

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 June 15, 2016 

Page 8 of 8 
  

			
	 GUARANTORS:
  

DENETZ LOGISTICS, L.L.C.,
 a Texas limited liability
company

		
	By:	 	/s/ Gary B. Humphreys
		 	 Gary B. Humphreys, Manager

  

	
	/s/ Gary B. Humphreys
	 GARY B. HUMPHREYS

  

	
	/s/ Martin W. Robertson
	 MARTIN W. ROBERTSON

 Exhibits and Schedules 

Exhibit B - Compliance Certificate 
 Exhibit E - Revolving NoteEX-10.18.13

 Exhibit 10.18.13 

 
 

 
 801 Houston Street 
 Fort
Worth, Texas 76102 
 September 22, 2016 
 MAALT, L.P.

 GHMR OPERATIONS, L.L.C. 
 Attention: Gary B.
Humphreys 
 4413 Carey Street 
 Fort Worth, Texas 76119 

Re:    Fifth Amendment to Loan Agreement 

Ladies and Gentlemen: 
 This letter (this
“Amendment”) amends the Loan Agreement dated June 15, 2014, among MAALT, L.P., a Texas limited partnership, and GHMR OPERATIONS, L.L.C., a Texas limited liability company (collectively
“Borrowers”); DENETZ LOGISTICS, L.L.C., a Texas limited liability company, GARY B. HUMPHREYS, MARTIN W. ROBERTSON, and the Trust Guarantors
(as defined below) (collectively “Guarantors”); and PLAINSCAPITAL BANK (“Lender”), as amended by the First Amendment dated February 11, 2015, the Second Amendment
dated June 15, 2015, the Third Amendment dated February 9, 2016, and the Fourth Amendment dated June 15, 2016 (collectively the “Loan Agreement”). Capitalized terms below have the meanings assigned in the Loan
Agreement. 
 1.    Third Term Loan. (a) GHMR, Gary B. Humphreys, and Martin W. Robertson have requested a
new term loan to refinance the existing loan from Lender to GHMR for the Facility in Dilley, Frio County, Texas, and Lender has agreed on the terms set forth in this Amendment. The Loan Agreement is amended to add a new Section 1C that reads as
follows: 
 “1C.    Third Term Loan. (a) Subject to the terms and conditions set forth
in the Loan Agreement and the other Loan Documents, Lender agrees to make term loan in the maximum aggregate principal amount of $1,797,500.00 to GHMR, Gary B. Humphreys, and Martin W. Robertson, as
co-borrowers (the “Third Term Loan”) on the terms set forth in the Term Promissory Note attached as Exhibit J to this Amendment (the “Third Term Note”), for the purpose
of refinancing the existing principal balance outstanding on the loan from Lender to GHMR for the Facility in Dilley, Frio County, Texas. 

(b)    The unpaid principal balance of the Third Term Note shall bear interest from the date advanced until
paid or until Event of Default or maturity at a fixed rate equal to four and one-half percent (4.5%) per annum. The Third Term Loan is payable on the terms set forth in the Third Term Note and will mature on
September 22, 2023.” 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 September 22, 2016

 Page 2 of 8 
  

 (b)    Subsection (e) of Section 1A of the Loan
Agreement is hereby amended to read as follows: 
 “(e)     The Term Loan, the Revolving Loan, the
Second Term Loan, the Third Term Loan, all other loans now or hereafter made by Lender to Borrowers, or either of them, and any renewals or extensions of or substitutions for those loans, will be referred to collectively as the
“Loans.” The Term Note, the Revolving Note, the Second Term Note, the Third Term Note, all other promissory notes now or hereafter payable by Borrowers, or either of them, to Lender, and any renewals or extensions of or
substitutions for those notes, will be referred to collectively as the “Notes.”” 

2.    Collateral. (a) The first sentence of Subsection (a) of Section 2 of the Loan Agreement is
amended to read as follows: 
 “Payment of the Notes (including the Term Note, the Revolving Note, the Second Term Note,
and the Third Term Note), all other obligations, fees, and expenses due pursuant to the Loan Agreement or the other Loan Documents, all obligations, fees, and expenses with respect to treasury and cash management services, and all other secured
indebtedness under the following security documents (collectively the “Secured Obligations”) will be secured by the first liens and first security interests created or described in the following (collectively the “Security
Documents”): (i) Security Agreements (the “Security Agreements”) dated June 15, 2014, executed by Borrowers, respectively, in favor of Lender, and covering the property, plant, and equipment now or hereafter used or
useful in the Facility or the Big Lake Facility, including, without limitation, sand silos, bucket elevator, railroad tract, pits, and transloading equipment, as well as substantially all other personal property of Borrowers (collectively the
“Collateral”); (ii) [the Assignment of Deposit Account has been released;] (iii) a Collateral Assignment of Transloading and Storage Services (the “Collateral Assignment”) dated June 15, 2014, executed
by MAALT in favor of Lender, and covering the Transloading and Storage Services Agreement dated effective June 9, 2014, between Lonestar Prospects, Ltd. and MAALT (the “Transloading Agreement”); (iv) a Collateral Assignment of
Transloading and Storage Services (the “Second Collateral Assignment”) dated February 9, 2016, executed by MAALT in favor of Lender, and covering (x) the Transloading and Storage Services Agreement dated effective
August 10, 2010, between PIONEER NATURAL RESOURCES USA, INC., a Delaware corporation, and MAALT, as amended by the First Amendment dated July 16, 2013, and the Second Amendment dated November 2, 2015 (collectively the “Pioneer
Agreement”); and (y) Transload Agreement dated effective February 1, 2016, between LONESTAR PROSPECTS, LTD., a Texas limited partnership doing business as Vista Sand, and MAALT (the “Second Transloading
Agreement”); (v) Leasehold Deed of Trust, Security 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 September 22, 2016

 Page 3 of 8 
  

 
Agreement, and Assignment of Rents and Leases (the “Leasehold Deed of Trust”) dated February 9, 2016, executed by MAALT in favor of Lender, and covering MAALT’s
leasehold interest in approximately two hundred and fifty (250) acres in Reagan County, Texas (the “Leasehold Tract”); (vi) Deed of Trust, Security Agreement, and Assignment of Rents and Leases (the “Dilley Deed of
Trust”) dated September 22, 2016, executed by GHMR in favor of Lender, and covering approximately two hundred and two (202) acres in Dilley, Frio County, Texas (the “Dilley Tract”); and (vii) any other
security documents now or hereafter executed in connection with the Secured Obligations.” 
 3.    Existing
Debts and Liens. (a) Clause (iii) of Subparagraph (8) of Subsection (a) of Section 6 of the Loan Agreement is hereby amended to read as follows: 

“(iii) the existing indebtedness disclosed in Schedule 2 attached to this Amendment, . . . .” 

(b)    Clause (ii) of Subparagraph (9) of Subsection (a) of Section 6 of the Loan Agreement is hereby
amended to read as follows: 
 “(ii) those existing and disclosed to Lender in Schedule 2 attached to this
Amendment; . . . .” 
 4.    Conditions Precedent. The obligation of Lender to enter into this Amendment and
make the advance on the Third Term Loan is subject to Borrower’s satisfaction, in Lender’s sole discretion, of the following conditions precedent: 

(a)    Borrower shall be in compliance in all material respects with the conditions set forth in Subsection (a) of
Section 4 of the Loan Agreement as of the date of this Amendment, and all representations and warranties set forth in Section 5 of the Loan Agreement must be true in all material respects as of the date of this Amendment. 

(b)    the negotiation, execution, and delivery of Loan Documents in Proper Form, including, but not limited to, the
following: 
  

	 	(i)	 this Amendment; 

  

	 	(ii)	 the Third Term Note; 

 

	 	(iii)	 the Dilley Deed of Trust; 

 

	 	(iv)	 Unlimited Guaranty signed by MAALT; 

 

	 	(v)	 a Borrowing Resolution from GHMR; and 

 

	 	(vi)	 a Guarantor Resolution from MAALT. 

(c)    a Material Adverse Change shall not have occurred. 

(d)    a loan title policy in the amount of $1,797,500.00, insuring that the Lender’s lien securing payment of the
Notes is a valid, first lien in favor of Lender on the 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 September 22, 2016

 Page 4 of 8 
  

 
Facility, containing no exceptions other than the standard printed exceptions, and with the survey deletion and the exception for standby fees and taxes amended to cover only the current tax year
and subsequent years, and containing such endorsements and only such other exceptions approved by Lender in writing and such endorsements as may be required by Lender (the policy may be delivered after closing pursuant to the commitment approved by
Lender). 
 (e)    GHMR’s payment to Lender of the following fees and expense reimbursement that are non-refundable and earned by Lender upon execution of this Amendment unless otherwise stated: 
  

	 	(i)	 Appraisal fee - $3,000.00; 

	 	(ii)	 Appraisal review - $600.00; 

	 	(iii)	 Phase I ESA - $2,500.00; and 

	 	(iv)	 Flood - $75.00. 

5.    Confirmations. (a) As security for the Notes, Borrowers previously executed the Security Documents.
Borrowers ratify and confirm the Security Documents, acknowledge that they are valid, subsisting, and binding, and agree that the Security Documents secure payment of the Notes (including the Term Note, the Revolving Note, the Second Term Note, and
the Third Term Note), the Loans (including the Term Loan, the Revolving Loan, the Second Term Loan, and the Third Term Loan), and all other Secured Obligations. 

(b)    In connection with the Notes, Guarantors executed the Guaranties. Guarantors ratify and confirm the Guaranties,
acknowledge that the Guaranties are valid, subsisting, and binding upon Guarantors, and agree that the Guaranties guarantee payment of the Notes (including the Term Note, the Revolving Note, the Second Term Note, and the Third Term Note), the Loans
(including the Term Loan, the Revolving Loan, the Second Term Loan, and the Third Term Loan), and all other Secured Obligations. 

(c)    Borrowers hereby represents to Lender that all representations and warranties set forth in Section 5 of the
Loan Agreement are true and correct in all material respects as of the date of execution of this Amendment; and that Borrower is in compliance in all material respects as of the date of execution of this Amendment with all covenants set forth in
Section 6 of the Loan Agreement, all financial covenants set forth in Section 7 of the Loan Agreement, and all reporting requirements set forth in Section 8 of the Loan Agreement. 

6.    Validity and Defaults. The Loan Agreement, as amended, remains in full force and effect. Borrowers and
Guarantors acknowledge that the Loan Agreement, the Notes, the Security Documents, the Guaranties, and the other Loan Documents are valid, subsisting, and binding upon Borrowers and Guarantors; no uncured breaches or defaults exist under the Loan
Agreement, as amended; and no event has occurred or circumstance exists which, with the passing of time or giving of notice, will constitute a default or breach under the Loan Agreement, as amended. Borrowers and Guarantors ratify the Loan
Agreement, as amended. 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 September 22, 2016

 Page 5 of 8 
  

 7.    Regulation B – Notice of Joint Intent. Federal
Regulation B (Equal Credit Opportunity Act) requires Lender to obtain evidence of Borrowers’ intention to apply for joint credit. Borrowers’ and Guarantors’ signatures below shall evidence such intent. Borrowers’ and
Guarantors’ intent shall apply to future related extensions of joint credit and joint guaranty. 

8.    Counterparts. This Amendment and the related Loan Documents may be executed in counterparts, and Lender is
authorized to attach the signature pages from the counterparts to copies for Lender and Borrowers and filing counterparts. At Lender’s option, this Amendment and the related Loan Documents may also be executed by Borrowers and Guarantors in
remote locations with signature pages faxed or scanned and e-mailed to Lender. Borrowers and Guarantors agree that the faxed and scanned signatures are binding upon Borrowers and Guarantors, and Borrowers and
Guarantors further agree to promptly deliver the original signatures for this Amendment and the related Loan Documents by overnight mail or expedited delivery. It will be an Event of Default if Borrowers or Guarantors fail to promptly deliver all
required original signatures. 
 9.    Captions. Captions are for convenience only and should not be used in
interpreting this Amendment. 
 10.    Final Agreement. (a) In connection with the Loans, Borrowers,
Guarantors, and Lender have executed and delivered this Amendment, the Loan Agreement, and the Loan Documents (collectively the “Written Loan Agreement”). 

(b)    It is the intention of Borrowers, Guarantors, and Lender that this paragraph be incorporated by reference into each
of the Loan Documents. Borrowers, Guarantors, and Lender each warrant and represent that their entire agreement with respect to the Loans is contained within the Written Loan Agreement, and that no agreements or promises have been made by, or exist
by or among, Borrowers, Guarantors, and Lender that are not reflected in the Written Loan Agreement. 
 (c)    THE LOAN
AGREEMENT, AS AMENDED, REPRESENTS THE FINAL AGREEMENT BETWEEN THE PARTIES AND MAY NOT BE CONTRADICTED BY EVIDENCE OF PRIOR, CONTEMPORANEOUS, OR SUBSEQUENT ORAL AGREEMENTS OF THE PARTIES. THERE ARE NO UNWRITTEN AGREEMENTS BETWEEN THE PARTIES. 

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 September 22, 2016

 Page 6 of 8 
  

 If the foregoing correctly sets forth your understanding of our agreement, please sign and
return one copy of this Amendment. 
  

			
	 Yours very truly,
  

PLAINSCAPITAL BANK

		
	By:	 	/s/ Keeton Moore
		 	 Keeton Moore,

Senior Vice President

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 September 22, 2016

 Page 7 of 8 
  

 Accepted and agreed to 

this 23 day of September, 2016: 

BORROWERS: 
  

			
	 MAALT, L.P.,
 a Texas limited
partnership

		
	By:	 	 Denetz Logistics, L.L.C.,
 a Texas limited
liability company,
 its general partner

  

					
		 	By:	 	/s/ Gary B. Humphreys
		 		 	 Gary B. Humphreys, Manager

  

			
	 GHMR OPERATIONS, L.L.C.,
 a Texas
limited liability company

		
	By:	 	/s/ Gary B. Humphreys
		 	 Gary B. Humphreys, Manager

 MAALT, L.P. 

GHMR OPERATIONS, L.L.C. 
 September 22, 2016

 Page 8 of 8 
  

  

			
	 GUARANTORS:
  

DENETZ LOGISTICS, L.L.C.,
 a Texas limited liability
company

		
	By:	 	/s/ Gary B. Humphreys
		 	 Gary B. Humphreys, Manager

  

	
	/s/ Gary B. Humphreys
	 GARY B. HUMPHREYS

  

	
	/s/ Martin W. Robertson
	 MARTIN W. ROBERTSON

 Exhibits and Schedules 

Exhibit J – Third Term Note 
 Schedule 2 – Existing
Debts and Liens

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