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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001193125-10-093466.txt : 20100426
<SEC-HEADER>0001193125-10-093466.hdr.sgml : 20100426
<ACCEPTANCE-DATETIME>20100426171734
ACCESSION NUMBER:		0001193125-10-093466
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20100420
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20100426
DATE AS OF CHANGE:		20100426

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			NORTHWEST PIPE CO
		CENTRAL INDEX KEY:			0001001385
		STANDARD INDUSTRIAL CLASSIFICATION:	STEEL PIPE & TUBES [3317]
		IRS NUMBER:				930557988
		STATE OF INCORPORATION:			OR
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27140
		FILM NUMBER:		10771002

	BUSINESS ADDRESS:	
		STREET 1:		12005 N BURGARD
		STREET 2:		P O BOX 83149
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97203
		BUSINESS PHONE:		5032851400

	MAIL ADDRESS:	
		STREET 1:		12005 N BURGARD
		STREET 2:		P O BOX 83149
		CITY:			PORTLAND
		STATE:			OR
		ZIP:			97203
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d8k.htm
<DESCRIPTION>FORM 8-K
<TEXT>
<HTML><HEAD>
<TITLE>Form 8-K</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE">

 <P STYLE="line-height:0px;margin-top:0px;margin-bottom:0px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="line-height:3px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P> <P STYLE="margin-top:4px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>UNITED STATES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>SECURITIES AND EXCHANGE COMMISSION </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>WASHINGTON, D.C. 20549 </B></FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center>
<P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center> <P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>FORM 8-K </B>
</FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="4"><B>CURRENT REPORT </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>EXCHANGE ACT OF 1934 </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>Date of Report (Date of earliest event reported): April&nbsp;20, 2010 </B></FONT></P>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:6px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="6"><B>NORTHWEST PIPE COMPANY </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(Exact name of registrant as specified in its charter) </B></FONT></P>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD WIDTH="32%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
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<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>OREGON</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>0-27140</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>93-0557988</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(State or other jurisdiction</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>of incorporation)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Commission</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>File Number)</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(I.R.S. Employer</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Identification No.)</B></FONT></P></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northwest Pipe Company </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>5721 SE Columbia Way Suite 200 </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Vancouver WA 98661 </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(360) 397-6250 </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Address, including zip code, and telephone number, including area code, of registrant&#146;s principal executive offices)
</B></FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P><center> <P STYLE="line-height:6px;margin-top:0px;margin-bottom:2px;border-bottom:1pt solid #000000;width:21%">&nbsp;</P></center>
<P STYLE="margin-top:6px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">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: </FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) </FONT></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) </FONT></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) </FONT></TD></TR></TABLE>
<P STYLE="font-size:6px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) </FONT></TD></TR></TABLE>
<P STYLE="font-size:8px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="line-height:0px;margin-top:0px;margin-bottom:0px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="line-height:3px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P>



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<TR>
<TD WIDTH="9%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Item&nbsp;1.01.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>ENTRY INTO MATERIAL DEFINITIVE AGREEMENT </B></FONT></TD></TR></TABLE>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">On April&nbsp;20, 2010, Northwest Pipe Company (the &#147;Company&#148;) and Bank of America, N.A., as Administrative Agent, entered into
a Fourth Amendment to Amended and Restated Credit Agreement (the &#147;Credit Agreement Amendment&#148;). The Credit Agreement Amendment amends the Amended and Restated Credit Agreement dated May&nbsp;31, 2007, as amended to date (the &#147;Credit
Agreement&#148;). On April&nbsp;21, 2010, the Company and Prudential Investment Management, Inc. and certain of its affiliates entered into a Fourth Amendment to Amended and Restated Note Purchase and Private Shelf Agreement (the &#147;Note Purchase
Agreement Amendment&#148;). The Note Purchase Agreement Amendment amends the Amended and Restated Note Purchase and Private Shelf Agreement dated as of May&nbsp;31, 2007, as amended to date (the &#147;Note Purchase Agreement&#148;). The Credit
Agreement and the Note Purchase Agreement are referred to herein as the &#147;Financing Agreements&#148;. The Credit Agreement Amendment and the Note Purchase Agreement Amendment are referred to herein as the &#147;Financing Agreement
Amendments&#148;. The Financing Agreement Amendments effect certain changes to the terms of the Financing Agreements, including: (i)&nbsp;extending the dates by which the Company is required to deliver to the lenders audited financial statements
prepared in accordance with generally accepted accounting principles for the year ended December&nbsp;31, 2009, and financial statements prepared in accordance with generally accepted accounting principles for the quarter ended March&nbsp;31, 2010;
(ii)&nbsp;requiring the Company to deliver to the lenders financial statements for the year ended December&nbsp;31, 2009 and the quarter ended March&nbsp;31, 2010 prepared in accordance with accounting practices used by the Company with respect to
the audited financial statements for the year ended December&nbsp;31, 2008; and (iii)&nbsp;designating the delisting of the Company&#146;s common stock from trading on the Nasdaq Stock Market as an event of default. The foregoing description of the
Financing Agreement Amendments does not purport to be complete and is qualified in its entirety by reference to the full text of the Financing Agreement Amendments, which are filed herewith as Exhibits&nbsp;10.1 and 10.2 to this Report, and are
incorporated herein by reference. </FONT></P> <P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="9%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Item&nbsp;9.01.</B></FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>FINANCIAL STATEMENTS AND EXHIBITS </B></FONT></TD></TR></TABLE>
<P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(d) Exhibits. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">10.1</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fourth Amendment to Amended and Restated Credit Agreement, by and among Northwest Pipe Company and Bank of America, N.A., as Administrative Agent</FONT></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP><FONT STYLE="font-family:Times New Roman" SIZE="2">10.2</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Fourth Amendment to Amended and Restated Note Purchase and Private Shelf Agreement by and among Northwest Pipe Company and Prudential Investment Management, Inc. and certain
affiliates.</FONT></TD></TR></TABLE> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">-2- </FONT></P>


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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>SIGNATURE </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">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 thereunto duly authorized on April&nbsp;26, 2010. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P><DIV ALIGN="right">
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<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NORTHWEST PIPE COMPANY</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2">(Registrant)</FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
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<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">By</FONT></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">/s/ Stephanie J. Welty</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stephanie J. Welty,</FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Senior
Vice President and Chief Financial Officer</FONT></P></TD></TR></TABLE></DIV> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">-3- </FONT></P>

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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-10.1
<SEQUENCE>2
<FILENAME>dex101.htm
<DESCRIPTION>FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT
<TEXT>
<HTML><HEAD>
<TITLE>Fourth Amendment to Amended and Restated Credit Agreement</TITLE>
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Exhibit 10.1 </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>FOURTH AMENDMENT TO </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>AMENDED AND RESTATED CREDIT AGREEMENT </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">This FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT (&#147;<U>Amendment</U>&#148;) is entered into effective as of
April&nbsp;15, 2010 (the &#147;<U>Effective Date</U>&#148;), among NORTHWEST PIPE COMPANY, an Oregon corporation (the &#147;<U>Borrower</U>&#148;), and BANK OF AMERICA, N.A., as Administrative Agent (the &#147;<U>Administrative Agent</U>&#148;).
</FONT></P> <P STYLE="margin-top:24px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>RECITALS </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Borrower, Administrative Agent and certain lenders party thereto from time to time are parties to that certain Amended and Restated
Credit Agreement entered into as of May&nbsp;31, 2007 (as amended, modified or supplemented from time to time, the &#147;<U>Credit Agreement</U>&#148;). Borrower and Administrative Agent desire to amend the Credit Agreement as set forth herein. The
Required Lenders (as that term is defined in the Credit Agreement), and Bank of America, N.A., as Swing Line Lender and L/C Issuer, have consented to the amendments to the Credit Agreement set forth herein as indicated by their signatures below.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">NOW THEREFORE, the parties agree as follows: </FONT></P>
<P STYLE="margin-top:24px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>AGREEMENT </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">1. <B>Recitals</B>. The Recitals are true. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">2. <B>Definitions</B>. Capitalized terms used herein and not otherwise defined shall have the meanings given in the Credit Agreement.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">3. <B>Amendment to Section&nbsp;6.01(a) of the Credit Agreement</B>. Section&nbsp;6.01(a) of the Credit Agreement is amended
in its entirety to read as follows: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a)(i) as soon as available, but in any event within 166 days after the
end of Borrower&#146;s 2009 fiscal year, and within 105 days after the end of each other fiscal year of the Borrower, a consolidated balance sheet of the Borrower and its Subsidiaries as at the end of such fiscal year, and the related consolidated
statements of income or operations, shareholders&#146; equity and cash flows for such fiscal year, setting forth in each case in comparative form the figures for the previous fiscal year, all in reasonable detail and prepared in accordance with
GAAP, such consolidated statements to be audited and accompanied by a report and opinion of an independent certified public accountant of nationally recognized standing reasonably acceptable to the Required Lenders, which report and opinion shall be
prepared in accordance with generally accepted auditing standards and shall not be subject to any &#147;going concern&#148; or like qualification or exception or any qualification or exception as to the scope of such audit; and
</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Page 1 &#150; FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT </FONT></P>


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 <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(ii) as soon as available, but in any event within 105 days after the end of
Borrower&#146;s 2009 fiscal year, a consolidated balance sheet of the Borrower and its Subsidiaries as at the end of such fiscal year, and the related consolidated statements of income or operations for such fiscal year, setting forth in each case
in comparative form the figures for the previous fiscal year, all in reasonable detail, such consolidated statements to be certified by the chief executive officer, chief financial officer, treasurer or controller of the Borrower as presenting the
financial condition and results of operations of the Borrower and its Subsidiaries in accordance with Borrower&#146;s accounting practices used in the 2008 fiscal year end audited reports, without regard to any conclusions arising out of the
internal investigation being conducted by the Audit Committee of Borrower&#146;s Board of Directors or any year-end adjustments resulting from the 2009 audited financial information provided under Section&nbsp;6.01(a)(i); and </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">4. <B>Amendment to Section&nbsp;6.01(b) of the Credit Agreement</B>. Section&nbsp;6.01(b) of the Credit Agreement is amended in its
entirety to read as follows: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b)(i) as soon as available, but in any event within 76 days after the end of the
first fiscal quarter of Borrower&#146;s 2010 fiscal year, and within 60 days after the end of each of the other first three fiscal quarters of each fiscal year of Borrower, a consolidated balance sheet of the Borrower and its Subsidiaries as at the
end of such fiscal quarter, and the related consolidated statements of income or operations, shareholders&#146; equity and cash flows for such fiscal quarter and for the portion of the Borrower&#146;s fiscal year then ended, setting forth in each
case in comparative form the figures for the corresponding fiscal quarter of the previous fiscal year and corresponding portion of the previous fiscal year, all in reasonable detail and prepared in accordance with GAAP, such consolidated statements
to be certified by the chief executive officer, chief financial officer, treasurer or controller of the Borrower as fairly presenting the financial condition, results of operations, shareholders&#146; equity and cash flows of the Borrower and its
Subsidiaries in accordance with GAAP, subject only to normal year end audit adjustments and the absence of footnotes; </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(ii) as soon as available, but in any event within 60 days after the end of the first fiscal quarter of the
Borrower&#146;s 2010 fiscal year, a consolidated balance sheet of the Borrower and its Subsidiaries as at the end of such fiscal quarter, and the related consolidated statements of income or operations for such fiscal quarter, setting forth in each
case in comparative form the figures for the corresponding quarter of the previous fiscal year, all in reasonable detail, such consolidated statements to be certified by </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Page 2 &#150; FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:8%"><FONT STYLE="font-family:Times New Roman" SIZE="2">
the chief executive officer, chief financial officer, treasurer or controller of the Borrower as presenting the financial condition and results of operations of the Borrower and its Subsidiaries
in accordance with Borrower&#146;s accounting practices used in the 2008 fiscal year end audited reports, without regard to any conclusions arising out of the internal investigation being conducted by the Audit Committee of Borrower&#146;s Board of
Directors or any year-end adjustments resulting from the 2009 audited financial information provided under Section&nbsp;6.01(a)(i). </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">5. <B>Amendment to Section&nbsp;6.02(a) of the Credit Agreement</B>. Section&nbsp;6.02(a) of the Credit Agreement is amended in its
entirety to read as follows: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a) concurrently with the delivery of the financial statements referred to in
<U>Section&nbsp;6.01(a)(i)</U>, a certificate of independent certified public accountants certifying such financial statements; </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">6. <B>Amendment to Section&nbsp;8.01 of the Credit Agreement</B>. A new paragraph (m)&nbsp;is added to the end of Section&nbsp;8.01 of
the Credit Agreement, to read in its entirety as follows: </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(m) NASDAQ Listing. The Nasdaq Stock Market either
(i)&nbsp;files a Form 25 with the SEC in connection with the delisting of the common stock of the Borrower from the Nasdaq GlobalSelect Market; or (ii)&nbsp;determines pursuant to a hearing or as a result of a default that the common stock of the
Borrower shall be delisted from the Nasdaq GlobalSelect Market; provided, however, that no Event of Default shall occur pursuant to this clause (m)&nbsp;during any period in which the common stock of the Borrower remains listed for trading (and
continues to trade without material suspension or interruption) during the pendency of any appeal from any Nasdaq Stock Market action or determination. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">7. <B>Release</B>. As a material part of the consideration of Administrative Agent entering into, and the Required Lenders consenting to,
this Amendment, Borrower hereby releases and forever discharges Administrative Agent, the Lenders and each of their respective successors, assigns, officers, managers, directors, shareholders, employees, agents, attorneys, representatives, parent
corporations, subsidiaries, and affiliates (all the foregoing, collectively, the &#147;Releasees&#148; and individually, a &#147;Releasee&#148;), jointly and severally from any and all claims, counterclaims, demands, damages, debts, agreements,
covenants, suits, contracts, obligations, liabilities, accounts, offsets, rights, actions and causes of action of any nature whatsoever, including all claims, demands, and causes of action for contribution and indemnity, whether arising at law or in
equity, whether presently possessed or possessed in the future, whether known or unknown, whether liability be direct or indirect, liquidated or unliquidated, whether presently accrued or to accrue hereafter, whether absolute or contingent, foreseen
or unforeseen, and whether or not heretofore asserted, which Borrower may have or claim to have against Releasees (or any one or more of them); <I>provided</I>, <I>however</I>, that neither Administrative Agent
</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Page 3 &#150; FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
nor any Lender nor any other Releasee shall be released hereby from: (i)&nbsp;any obligation to pay to Borrower any amounts that Borrower may have on deposit with Administrative Agent or any
Lender, in accordance with applicable laws and the terms of the documents establishing any such deposit relationship; or (ii)&nbsp;any claim (including without limitation any claim for breach of the Credit Agreement or other Loan Document) arising
from any action, inaction or conduct of Administrative Agent or the Lenders or the other Releasees after the effective date of this Amendment. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">8. <B>Amendment Fee</B>. Upon the execution and delivery hereof, Borrower shall pay to the Required Lenders consenting hereto an
amendment fee of $125,000, such amendment fee to be allocated among such Required Lenders in proportion to the amounts of their respective Commitments. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">9. <B>No Further Amendment, Expenses</B>. Except as expressly modified by this Amendment, the Credit Agreement and the other Loan
Documents shall remain unmodified in full force and effect and the parties hereby ratify their respective obligations thereunder. Without limiting the foregoing, Borrower expressly reaffirms and ratifies its obligation to pay or reimburse
Administrative Agent and Lenders on request for all reasonable expenses, including legal fees actually incurred by Administrative Agent and Lenders in connection with the preparation of this Amendment, any other amendment documents and the closing
of the transaction contemplated hereby and thereby. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">10. <B>Miscellaneous</B>. </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:8%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a) <B>Counterparts</B>. This Amendment may be executed in any number of counterparts and by different parties hereto in
separate counterparts, each of which when so executed shall be deemed to be an original, and all of which taken together shall constitute one and the same Amendment, it being understood that the Administrative Agent may rely on a facsimile
counterpart signature page hereof for purpose of determining whether a party hereto has executed a counterpart hereof. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; margin-left:4%; text-indent:8%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b) <B>Governing Law</B>. This Amendment and the other agreements provided for herein and the rights and obligations of
the parties hereto and thereto shall be construed and interpreted in accordance with the laws of the State of Oregon. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; margin-left:4%; text-indent:8%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(c) <B>Certain Agreements Not Enforceable</B>. UNDER OREGON LAW, MOST AGREEMENTS, PROMISES AND COMMITMENTS MADE BY THE
LENDERS CONCERNING LOANS AND OTHER CREDIT EXTENSIONS WHICH ARE NOT FOR PERSONAL, FAMILY OR HOUSEHOLD PURPOSES OR SECURED SOLELY BY THE BORROWER&#146;S RESIDENCE MUST BE IN WRITING, EXPRESS CONSIDERATION, AND BE SIGNED BY THE LENDERS TO BE
ENFORCEABLE. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">[Signatures appear on the following page.] </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Page 4 &#150; FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">EXECUTED AND DELIVERED by the duly authorized officers of the parties as of the date first
above written. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">

<TR>
<TD WIDTH="47%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD WIDTH="45%"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>BORROWER:</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NORTHWEST PIPE COMPANY</B></FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="4"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>ADMINISTRATIVE AGENT:</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>BANK OF AMERICA, N.A., as</B></FONT><BR> <P STYLE="margin-bottom:1px; margin-top:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Administrative
Agent</B></FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSENTED TO BY THE REQUIRED LENDERS:</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="4"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>BANK OF AMERICA, N.A.</B></FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR></TABLE>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Page 5 &#150; FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT </FONT></P>


<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">


<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">

<TR>
<TD WIDTH="47%"></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD></TD>
<TD VALIGN="bottom" WIDTH="2%"></TD>
<TD WIDTH="45%"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>UNION BANK, N.A., formerly known as</B></FONT><BR> <P STYLE="margin-bottom:1px; margin-top:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Union Bank of
California, N.A.</B></FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="4"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>HSBC BANK USA, NATIONAL ASSOCIATION</B></FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="4"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>U.S. BANK NATIONAL ASSOCIATION</B></FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD>
<TD HEIGHT="8" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="right"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>CONSENTED TO BY SWING LINE</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>LENDER AND L/C ISSUER</B></FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="4"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>BANK OF AMERICA, N.A., </B>as Swing Line<B></B></FONT><BR>
<P STYLE="margin-bottom:1px; margin-top:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B></B>Lender and L/C Issuer<B></B></FONT></P></TD></TR>
<TR>
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<TD HEIGHT="16" COLSPAN="2"></TD></TR>
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<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD HEIGHT="8"></TD>
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<TD HEIGHT="8" COLSPAN="2"></TD></TR>
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<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
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<TD HEIGHT="8" COLSPAN="2"></TD></TR>
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<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR></TABLE>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Page 6 &#150; FOURTH AMENDMENT TO AMENDED AND RESTATED CREDIT AGREEMENT </FONT></P>

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<TYPE>EX-10.2
<SEQUENCE>3
<FILENAME>dex102.htm
<DESCRIPTION>FOURTH AMENDMENT TO AMENDED AND RESTATED NOTE PURCHASE & PRIVATE SHELF AGREEMENT
<TEXT>
<HTML><HEAD>
<TITLE>Fourth Amendment to Amended and Restated Note Purchase &amp; Private Shelf Agreement</TITLE>
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 <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Exhibit 10.2 </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Prudential Investment Management, Inc. (&#147;<B>PIM</B>&#148;) </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Prudential Insurance Company of America (&#147;<B>Prudential</B>&#148;) </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Prudential Retirement Insurance and Annuity Company (&#147;<B>PRIAC</B>&#148;) </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Each Prudential Affiliate under the Note Agreement referred to below </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">c/o Prudential Capital Group </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Four Embarcadero Center, Suite 2700 </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">San Francisco, California 94111 </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>April&nbsp;[<U>&nbsp;&nbsp;&nbsp;&nbsp;</U>], 2010 </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NORTHWEST PIPE COMPANY </B></FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">5721 SE Columbia
Way, Suite 200 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Vancouver, Washington 98661 </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="4%"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">Re:</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><U>Fourth Amendment to Amended and Restated Note Purchase and Private Shelf Agreement dated as of May&nbsp;31, 2007</U> </FONT></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Ladies and Gentlemen: </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">Reference is made to the Amended and Restated Note Purchase and Private Shelf Agreement, dated as of May&nbsp;31, 2007 (as amended,
restated, supplemented or otherwise modified from time to time, the &#147;<B>Note Agreement</B>&#148;), by and between Northwest Pipe Company, an Oregon corporation (the &#147;<B>Company</B>&#148;), on the one hand, and PIM, Prudential, PRIAC and
each Prudential Affiliate (as therein defined) that becomes bound by certain provisions thereof (together with PIM, Prudential and PRIAC and their respective successors and Transferees, collectively, the &#147;<B>Purchasers</B>&#148;), on the other
hand. Capitalized terms used and not otherwise defined herein shall have the meanings provided in the Note Agreement (after giving effect to any amendments of such terms in this letter agreement). </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">1. <U>Amendments</U>. Pursuant to the request of the Company and the provisions of paragraph 11C of the Note Agreement, and subject to
the terms and conditions of this letter agreement, the Purchasers hereby agree with the Company that the Note Agreement shall be amended, effective as of April&nbsp;15, 2010 (the &#147;<B>Fourth Amendment Effective Date</B>&#148;), as follows:
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a) Clause (i)&nbsp;of paragraph 5A is hereby amended and restated in its entirety to read as follows: </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:4%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#147;(i)(A) within 76 days after the end of the first fiscal quarter of the Company&#146;s 2010 fiscal year, and within
60 days after the end of each other quarterly fiscal period in each fiscal year of the Company (other than the last quarterly period), consolidating (by division and product line) and consolidated statements of income and cash flows and a
consolidated statement of shareholders&#146; equity of the Company and its Subsidiaries for the period from the beginning of the current fiscal year to the end of such quarterly period, and a consolidated balance sheet of the Company and its
Subsidiaries as at the end of such quarterly period, setting forth in each case in comparative form figures for the corresponding period in the preceding fiscal year, all in reasonable detail and prepared in accordance with GAAP and certified by an
authorized financial officer of the Company as fairly presenting, in all material respects, the consolidated financial position of the companies being reported on their consolidated results of operations and changes in financial position, subject to
changes resulting from year-end adjustments and the absence of all required footnotes; </FONT></P>

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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northwest Pipe Company </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"> Page
 2
 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(B) within 60 days after the end of the first fiscal quarter of the
Company&#146;s 2010 fiscal year, consolidating (by division and product line) and consolidated statements of income and cash flows of the Company and its Subsidiaries as at the end of such fiscal quarter, and a consolidated balance sheet of the
Company and its Subsidiaries as at the end of such fiscal quarter, setting forth in each case in comparative form figures for the corresponding period in the preceding fiscal year, all in reasonable detail, and certified by an authorized financial
officer of the Company as fairly presenting, in all material respects, the consolidated financial position of the companies being reported on their consolidated results of operations and changes in financial position in accordance with the
Company&#146;s accounting practices used in the 2008 fiscal year end audited reports, without regard to any conclusions arising out of the internal investigation being conducted by the Audit Committee of the Company&#146;s Board of Directors or any
year-end adjustments resulting from the 2009 audited financial information provided under the clause (ii)(A) of this paragraph 5A;&#148; </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b) Clause (ii)&nbsp;of paragraph 5A is hereby amended and restated in its entirety to read as follows: </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#147;(ii)(A) within 166 days after the end of the Company&#146;s 2009 fiscal year, and within 105 days after the end of each other fiscal
year of the Company, consolidating (by division and product line) and consolidated statements of income and cash flows and a consolidated statement of shareholders&#146; equity of the Company and its Subsidiaries for such year, and a consolidated
balance sheet of the Company and its Subsidiaries as at the end of such year, setting forth in each case in comparative form corresponding consolidated figures from the preceding annual audit, all in reasonable detail and prepared in accordance with
GAAP and, as to the consolidated statements, reported on by independent public accountants of recognized national standing, selected by the Company whose report shall be without a &#147;going concern&#148; or like qualification or exception and
without limitation as to scope of the audit and, as to the consolidating statements, certified by an authorized financial officer of the Company as fairly presenting, in all material respects, the consolidated financial position of the companies
being reported on their consolidated results of operations and changes in financial position; </FONT></P> <P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(B) and within
105 days after the end of the Company&#146;s 2009 fiscal year, consolidating (by division and product line) and consolidated statements of income and cash flows of the Company and its Subsidiaries for such fiscal year, and a consolidated balance
sheet of the Company and its Subsidiaries as at the end of such fiscal year, setting forth in each case in comparative form corresponding consolidated figures from the preceding annual audit, all in reasonable detail and, as to the consolidating and
consolidated statements, certified by an authorized financial officer of the Company as fairly presenting, in all material respects, the consolidated financial position of the companies being reported on their consolidated results of operations and
changes in financial position in accordance with the Company&#146;s accounting practices </FONT></P>

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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northwest Pipe Company </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"> Page
 3
 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px; margin-left:8%"><FONT STYLE="font-family:Times New Roman" SIZE="2">
used in the 2008 fiscal year end audited reports, without regard to any conclusions arising out of the internal investigation being conducted by the Audit Committee of the Company&#146;s Board of
Directors or any year-end adjustments resulting from the 2009 audited financial information provided under the preceding clause (ii)(A) of this paragraph 5A;&#148; </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(c) A new clause (xviii)&nbsp;is hereby added to paragraph 7A, in proper numeric order, to read as follows: </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; margin-left:8%"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#147; or (xviii)&nbsp;the NASDAQ Stock Market either (A)&nbsp;files a Form 25 with the U.S. Securities and Exchange Commission
(&#147;<B>SEC</B>&#148;) (or with any governmental authority succeeding to any of the SEC&#146;s principal functions), and in connection with the delisting of the common stock of the Company from the NASDAQ Global Select Market; or
(B)&nbsp;determines pursuant to a hearing or as a result of a default that the common stock of the Company shall be delisted from the NASDAQ Global Select Market; <U>provided</U>, <U>however</U>, that no Event of Default shall occur pursuant to this
clause (xviii)&nbsp;during any period in which the common stock of the Borrower remains listed for trading (and continues to trade without material suspension or interruption) during the pendency of any appeal from any NASDAQ Stock Market action or
decision;&#148; </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">2. <U>Agreement regarding December 2009 Financial Covenants</U>. The Purchasers hereby agree with the Company
that for purposes of determining compliance with the financial covenants set forth in paragraph 6A of the Note Agreement which are to be tested on, at or as of December&nbsp;31, 2009, the Purchasers and the Company shall use the financial data and
other information set forth in the Company&#146;s audited financial statements for fiscal year 2009, which audited statements are to be delivered to the Purchasers pursuant to clause (ii)(A) of paragraph&nbsp;5A of the Note Agreement, as amended and
restated in Section&nbsp;1(b) above. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">3. <U>Limitation of Modifications</U>. Each amendment and/or other modification set
forth in this letter agreement shall be limited precisely as written and shall not be deemed to be (a)&nbsp;an amendment, consent or waiver of any other terms or conditions of the Note Agreement or any other document related to the Note Agreement or
(b)&nbsp;a consent to any future amendment, consent or waiver. Except as expressly set forth in this letter, the Note Agreement and the documents related to the Note Agreement shall continue in full force and effect. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">4. <U>Representations and Warranties</U>. The Company hereby represents and warrants as follows: (a)&nbsp;no Default or Event of Default
has occurred and is continuing (other than the Defaults or Events of Default which may have existed prior to, but not after, the effectiveness of this letter agreement), or would result from the transactions contemplated by this letter agreement;
(b)&nbsp;the Company&#146;s execution, delivery and performance of the Note Agreement, as modified by this letter agreement, have been duly authorized by all necessary corporate and other action and do not and will not require any registration with,
consent or approval of, or notice to or action by, any Person (including any governmental authority) in order to be effective and enforceable; (c)&nbsp;the Note Agreement, as modified by this letter agreement, constitutes the legal, valid and
binding obligation of the Company, enforceable against the Company in accordance with its terms except as the enforceability thereof may be limited by bankruptcy, insolvency or other similar laws of general application relating to or affecting the
enforcement of creditors&#146; rights or by general principles of equity; and (d)&nbsp;each of the representations and warranties set forth in paragraph 8 of the Note Agreement is true, correct and complete as of the date hereof
</FONT></P>

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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northwest Pipe Company </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"> Page
 4
 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">
(except to the extent such representations and warranties expressly relate to another date, in which case such representations and warranties are true, correct and complete as of such other
date). </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">5. <U>Conditions to Effectiveness</U>. This letter agreement shall become effective, as of the Fourth Amendment
Effective Date, on the date on which: (a)&nbsp;the Purchasers shall have received a fully executed and delivered counterpart of this letter agreement executed by the Company, (b)&nbsp;the Purchasers shall have received a fully executed and delivered
copy of the fourth amendment to Bank Credit Agreement in form and substance satisfactory to the Purchasers, and each of the conditions precedent in such amendment shall have been previously or concurrently satisfied; (c)&nbsp;the Company shall have
paid to, or as directed by, PIM in immediately available funds an amendment fee equal to 0.10% of the principal amount outstanding on the Notes; and (d)&nbsp;the Company shall have paid Bingham McCutchen LLP in immediately available funds its
accrued and unpaid legal fees and expenses. </FONT></P> <P STYLE="margin-top:18px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">6. <U>Release; Covenant Not to Sue</U>. </FONT></P>
<P STYLE="margin-top:6px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a) The Company hereby absolutely and unconditionally waives, releases, remises and forever discharges the Purchasers, and any and all of
their respective participants, parent corporations, subsidiary corporations, affiliated corporations, related funds, insurers, indemnitors, officers, directors, shareholders, trustees, agents, employees, consultants, experts, advisors, attorneys,
and each of their respective successors and assigns (each a <B>&#147;</B><B>Released Party</B><B>&#148;</B>), from any and all claims, suits, investigations, proceedings, demands, obligations, liabilities, damages, losses, costs, expenses, or causes
of action of any kind, nature or description, whether based in law, equity, contract, tort, implied or express warranty, strict liability, criminal or civil statute, common law, or under any state or federal law or otherwise, of any kind or
character, known or unknown, past or present, liquidated or unliquidated, suspected or unsuspected, which the Company has had, now has, or might hereafter have, or has made claim to have against any such Released Party with respect to the Note
Agreement, the Notes or any other Transaction Document that, in each case, involve events, acts or omissions that have taken place on or before the date hereof, or with respect to the lender-borrower relationship evidenced by the Transaction
Documents with respect to acts, omissions or events that have taken place on or before the date hereof. It is the intention of the Company in providing this release that the same shall be effective as a bar to each and every claim, demand and cause
of action specified, and in furtherance of this intention it waives and relinquishes all rights and benefits under Section&nbsp;1542 of the Civil Code of the State of California (or any comparable provision of any other applicable law), which
provides: </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">&#147;A GENERAL RELEASE DOES NOT EXTEND TO CLAIMS WHICH A CREDITOR DOES NOT KNOW OR SUSPECT TO EXIST IN HIS FAVOR
AT THE TIME OF EXECUTING THE RELEASE, WHICH IF KNOWN BY HIM, MUST HAVE MATERIALLY AFFECTED HIS SETTLEMENT WITH THE DEBTOR.&#148; </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">The Company acknowledges that it may hereafter discover facts different from or in addition to those now known or believed to be true
with respect to such claims, demands, or causes of action and agrees that this instrument shall be and remain effective in all respects notwithstanding any such differences or additional facts. The Company understands, acknowledges and agrees that
the release set forth above may be pleaded as a full and complete defense and may be used as a basis for an injunction against any action, suit or other proceeding which may be instituted, prosecuted or attempted in breach of the provisions of such
release. </FONT></P>

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 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Northwest Pipe Company </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"> Page
 5
 </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT SIZE="1">&nbsp;</FONT></P>
 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b) The Company, on behalf of itself and its successors, assigns, and other legal
representatives, hereby absolutely, unconditionally and irrevocably, covenants and agrees with and in favor of each Released Party above that it will not sue (at law, in equity, in any regulatory proceeding or otherwise) any Released Party on the
basis of any claim released, remised and discharged by such Person pursuant to the above release. The Company further agrees that it shall not dispute the validity or enforceability of the Note Agreement, any of the Notes or any of the other
Transaction Documents or any of its obligations thereunder. If the Company, or any of its successors, assigns or other legal representations violates the foregoing covenant, such Person, for itself and its successors, assigns and legal
representatives, agrees to pay, in addition to such other damages as any Released Party may sustain as a result of such violation, all reasonable attorneys&#146; fees and costs incurred by such Released Party as a result of such violation.
</FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">7. <U>Counterparts</U>. This document may be executed in multiple counterparts, which together shall constitute a single
document. </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">8. <U>Governing Law</U>. This letter agreement shall be construed and enforced in accordance with, and the rights
of the parties shall be governed by, the internal laws of the State of New York, excluding choice-of-law principles of the law of such state that would require the application of the laws of a jurisdiction other than such state. </FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">[Remainder of the page intentionally left blank.] </FONT></P>

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 <P STYLE="margin-top:0px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">If you are in agreement with the foregoing, please sign the enclosed counterpart of this
letter in the space indicated below and return it to the Purchasers at the above address whereupon, subject to the conditions expressed herein, it shall become a binding agreement between the Company, on the one hand, and the Purchasers, on the
other hand. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P><DIV ALIGN="right">
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<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2">Sincerely,</FONT></TD></TR>
<TR>
<TD HEIGHT="16" COLSPAN="3"></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PURCHASERS</B></FONT></TD></TR>
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<TD HEIGHT="16" COLSPAN="3"></TD></TR>
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<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>P<SMALL>RUDENTIAL</SMALL> I<SMALL>NVESTMENT</SMALL> M<SMALL>ANAGEMENT</SMALL>, I<SMALL>NC</SMALL>.</B></FONT></TD></TR>
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<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
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<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
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<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Vice President</FONT></TD></TR>
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<TD HEIGHT="16" COLSPAN="3"></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>T<SMALL>HE</SMALL> P<SMALL>RUDENTIAL</SMALL> I<SMALL>NSURANCE</SMALL> C<SMALL>OMPANY</SMALL> <SMALL>OF</SMALL> A<SMALL>MERICA</SMALL></B></FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Vice President</FONT></TD></TR>
<TR>
<TD HEIGHT="16" COLSPAN="3"></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>P<SMALL>RUDENTIAL</SMALL> R<SMALL>ETIREMENT</SMALL> I<SMALL>NSURANCE</SMALL> <SMALL>AND</SMALL> A<SMALL>NNUITY</SMALL> C<SMALL>OMPANY</SMALL></B></FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>P<SMALL>RUDENTIAL</SMALL> I<SMALL>NVESTMENT</SMALL> M<SMALL>ANAGEMENT</SMALL>,</B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>&nbsp;&nbsp;&nbsp;&nbsp;I<SMALL>NC</SMALL>., <SMALL>AS</SMALL> I<SMALL>NVESTMENT</SMALL> M<SMALL>ANAGER</SMALL></B></FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Vice President</FONT></TD></TR></TABLE></DIV>

<p Style='page-break-before:always'>
<HR  SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

 <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Accepted and agreed to as of the date first appearing above: </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD WIDTH="86%"></TD></TR>
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<TD VALIGN="bottom" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>NORTHWEST PIPE COMPANY,</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3"><FONT STYLE="font-family:Times New Roman" SIZE="2">an Oregon corporation</FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0px;margin-bottom:1px;border-bottom:1px solid #000000" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">&nbsp;</FONT></P></TD></TR>
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<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Stephanie J. Welty</FONT></TD></TR>
<TR>
<TD VALIGN="top"> <P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">Title:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">Senior Vice President and Chief Financial Officer</FONT></TD></TR></TABLE>
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