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<SEC-DOCUMENT>0001193125-10-116272.txt : 20100511
<SEC-HEADER>0001193125-10-116272.hdr.sgml : 20100511
<ACCEPTANCE-DATETIME>20100511165312
ACCESSION NUMBER:		0001193125-10-116272
CONFORMED SUBMISSION TYPE:	NT 10-Q
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20100331
FILED AS OF DATE:		20100511
DATE AS OF CHANGE:		20100511
EFFECTIVENESS DATE:		20100511

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:		NT 10-Q
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-27140
		FILM NUMBER:		10821611

	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>NT 10-Q
<SEQUENCE>1
<FILENAME>dnt10q.htm
<DESCRIPTION>NOTIFICATION OF LATE FILING
<TEXT>
<HTML><HEAD>
<TITLE>Notification of Late Filing</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="font-size:4px;margin-top:0px;margin-bottom:0px">&nbsp;</P><DIV ALIGN="right">
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="15%" BORDER="0">

<TR>
<TD WIDTH="52%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD></TD></TR>
<TR>
<TD VALIGN="top" COLSPAN="3" ALIGN="center" STYLE="BORDER:1px solid #000000; padding-left:8px; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">OMB APPROVAL</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" STYLE="BORDER-LEFT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-left:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">OMB Number:</FONT></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" STYLE="BORDER-RIGHT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">3235-0058</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" STYLE="BORDER-LEFT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-left:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Expires:</FONT></TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" STYLE="BORDER-RIGHT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">May&nbsp;31,&nbsp;2012</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="3" NOWRAP STYLE="BORDER-LEFT:1px solid #000000; BORDER-RIGHT:1px solid #000000; padding-left:8px; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Estimated&nbsp;average&nbsp;burden&nbsp;
hours</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" NOWRAP STYLE="BORDER-LEFT:1px solid #000000; padding-left:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">per&nbsp;response&nbsp;&#133;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right" STYLE="BORDER-RIGHT:1px solid #000000; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">2.50</FONT></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom" STYLE="BORDER-TOP:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" STYLE="BORDER-TOP:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" STYLE="BORDER-TOP:1px solid #000000">&nbsp;</TD></TR>
<TR>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1px">
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000">&nbsp;</TD>
<TD VALIGN="bottom" STYLE="BORDER-BOTTOM:1px solid #000000">&nbsp;</TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="3" NOWRAP ALIGN="center" STYLE="BORDER-LEFT:1px solid #000000; BORDER-RIGHT:1px solid #000000; padding-left:8px; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">SEC FILE NUMBER</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="3" NOWRAP ALIGN="center" STYLE="BORDER-LEFT:1px solid #000000; BORDER-RIGHT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-left:8px; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">0-27140
</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="3" NOWRAP ALIGN="center" STYLE="BORDER-LEFT:1px solid #000000; BORDER-TOP:1px solid #000000; BORDER-RIGHT:1px solid #000000; padding-left:8px; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">CUSIP
NUMBER</FONT></TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="3" NOWRAP ALIGN="center" STYLE="BORDER-LEFT:1px solid #000000; BORDER-RIGHT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-left:8px; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">667746101
</FONT></TD></TR></TABLE></DIV> <P STYLE="margin-top:12px;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="margin-top:18px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="5"><B>FORM 12b-25 </B></FONT></P>
<P STYLE="margin-top:18px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>NOTIFICATION OF LATE FILING </B></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="28%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="71%"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="right"> <P STYLE="margin-left:1.00em; text-indent:-1.00em" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>(Check One)&nbsp;&nbsp;&nbsp;&nbsp;</I></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"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Form 10-K&nbsp;&nbsp;&nbsp;&nbsp;
<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Form 20-F&nbsp;&nbsp;&nbsp;&nbsp; <FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Form 11-K&nbsp;&nbsp;&nbsp;&nbsp;
<FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT>&nbsp;&nbsp;Form 10-Q</FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Form
10-D&nbsp;&nbsp;&nbsp;&nbsp; <FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Form N-SAR&nbsp;&nbsp;&nbsp;&nbsp; <FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Form N-CSR</FONT></P></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">For Period Ended: <B>March 31, 2010</B></FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Transition Report on Form 10-K</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Transition Report on Form 20-F</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Transition Report on Form 11-K</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Transition Report on Form 10-Q</FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;Transition Report on Form N-SAR</FONT></TD></TR>
<TR>
<TD HEIGHT="16"></TD>
<TD HEIGHT="16" COLSPAN="2"></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2">For the Transition Period Ended: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD></TR></TABLE>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="92%" BORDER="0" ALIGN="center">

<TR>
<TD WIDTH="100%"></TD></TR>
<TR>
<TD VALIGN="top" NOWRAP ALIGN="center" STYLE="BORDER:1px solid #000000; padding-left:8px; padding-right:8px"> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Read Instruction (on back
page) Before Preparing Form. Please Print or Type.</I></FONT></P> <P STYLE="margin-top:0px;margin-bottom:1px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Nothing in this form shall be construed to imply that the Commission
has verified any information contained herein.</B></FONT></P></TD></TR></TABLE> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">If the notification relates to a portion of the filing checked above,
identify the Item(s) to which the notification relates: </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="line-height:0px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PART I &#151; REGISTRANT
INFORMATION </B></FONT></P> <P STYLE="font-size:24px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="margin-top:24px;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="1"><B>Full Name of Registrant </B></FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Former Name if Applicable </B></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="font-size:24px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="margin-top:12px;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="1"><B>Address of Principal Executive Office </B><B><I>(Street and Number)</I></B><B> </B></FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="font-size:24px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="margin-top:12px;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="1"><B>City, State and Zip Code </B></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="line-height:0px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PART II &#151; RULES 12b-25(b)
AND (c) </B></FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">If the subject report could not be filed without unreasonable effort or expense and the registrant seeks relief pursuant to Rule
12b-25(b), the following should be completed. (Check box if appropriate) </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="3%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="2%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="93%"></TD></TR>
<TR>
<TD VALIGN="middle" ROWSPAN="3" STYLE="BORDER-RIGHT:1px solid #000000; padding-left:8px">
<P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2"><FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;&nbsp;</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(a)</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The reason described in reasonable detail in Part III of this form could not be eliminated without unreasonable effort or
expense.</FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:1px">&nbsp;</P></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(b)</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"> <P STYLE="margin-top:0px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">The subject annual report, semi-annual report, transition report on Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or
portion thereof, will be filed on or before the fifteenth calendar day following the prescribed due date; or the subject quarterly report or transition report on Form 10-Q or subject distribution report on Form 10-D, or portion thereof, will be
filled on or before the fifth calendar day following the prescribed due date; and</FONT></P> <P STYLE="font-size:6px;margin-top:0px;margin-bottom:1px">&nbsp;</P></TD></TR>
<TR>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">(c)</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">The accountant&#146;s statement or other exhibit is required by Rule 12b-25(c) has been attached if applicable.</FONT></TD></TR></TABLE>
<P STYLE="font-size:18px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="line-height:0px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PART III &#151; NARRATIVE </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q, 10-D, N-SAR, N-CSR, or the transition report or portion thereof, could not be filed
within the prescribed time period. (Attach Extra Sheets if Needed) </FONT></P> <P STYLE="margin-top:12px;margin-bottom:0px; text-indent:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">As previously disclosed, the Audit Committee of the Board
of Directors of Northwest Pipe Company (the &#147;Company&#148;), with the assistance of independent professionals, is conducting an ongoing internal investigation of certain accounting matters, including certain revenue recognition practices.
Pending the completion of the Audit Committee&#146;s investigation, the Company is unable to complete the preparation of its Quarterly Report on Form 10-Q for the quarter ended March 31, 2010 (the &#147;Form 10-Q&#148;), including the condensed
consolidated financial statements required to be presented in the Form 10-Q. The Company plans to file the Form 10-Q as soon as practicable after the completion of the Audit Committee&#146;s investigation, the completion of any additional accounting
work required as a result of the Audit Committee&#146;s investigation, the completion of the Company&#146;s consolidated financial statements for the year ended December 31, 2009 and the completion of the audit of such financial statements by the
Company&#146;s independent registered public accountants, and the completion of the Company&#146;s condensed consolidated financial statements for the quarter ended March 31, 2010 and the completion of the review of such financial statements by the
Company&#146;s independent registered public accountants. The Company does not expect that the Form 10-Q will be filed before the fifth calendar day following its original due date as prescribed by Rule 12b-25. </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="line-height:0px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000">&nbsp;</P>
<P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>PART IV &#151; OTHER INFORMATION </B></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%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(1)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Name and telephone number of person to contact in regard to this notification </FONT></TD></TR></TABLE>
<P STYLE="font-size:24px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="92%" BORDER="0" ALIGN="center">

<TR>
<TD WIDTH="42%"></TD>
<TD VALIGN="bottom" WIDTH="5%"></TD>
<TD WIDTH="7%"></TD>
<TD VALIGN="bottom" WIDTH="7%"></TD>
<TD WIDTH="39%"></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Stephanie J. Welty</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>(360)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>397-6323</B></FONT></TD></TR>
<TR>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Name)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Area&nbsp;Code)</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="top" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>(Telephone Number)</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">(2)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the investment Company Act of 1940 during the
preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed?&nbsp;If the answer is no, identify
report(s).&nbsp;&nbsp;&nbsp;&nbsp;Yes&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#120;</FONT> </FONT></TD></TR></TABLE>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">As previously disclosed, the Company has not yet filed its:
</FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Quarterly Report on Form 10-Q for the quarter ended September 30, 2009 </FONT></P>
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">Annual Report on Form 10-K for the year ended December&nbsp;31, 2009 </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TR>
<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">(3)</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings
statements to be included in the subject report or portion
thereof?&nbsp;&nbsp;&nbsp;&nbsp;Yes&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;&nbsp;&nbsp;No&nbsp;&nbsp;<FONT STYLE="FONT-FAMILY:WINGDINGS">&#168;</FONT>&nbsp;&nbsp;* See footnote </FONT></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px; margin-left:4%"><FONT STYLE="font-family:Times New Roman" SIZE="2">If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a
reasonable estimate of the results cannot be made. </FONT></P> <P STYLE="margin-top:0px;margin-bottom:0px;page-break-before:always"></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="line-height:8px;margin-top:0px;margin-bottom:2px;border-bottom:0.5pt solid #000000;width:10%">&nbsp;</P>
<TABLE STYLE="BORDER-COLLAPSE:COLLAPSE" BORDER="0" CELLPADDING="0" CELLSPACING="0" WIDTH="100%">
<TR>
<TD WIDTH="2%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">*</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Pending completion of the Audit Committee&#146;s internal investigation described above, the completion of any additional accounting work required as a result of the
Audit Committee&#146;s investigation, the completion of the Company&#146;s condensed consolidated financial statements for the quarter ended March 31, 2010, and the completion of the review of such financial statements by the Company&#146;s
independent registered public accountants, the Company is unable to provide a reasonable estimate of its results of operations for the quarter ended March 31, 2010. </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> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<P STYLE="margin-top:24px;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="1"><B>(Name of Registrant as Specified in Charter) </B></FONT></P>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">has caused this notification to be signed on its behalf by the undersigned hereunto duly authorized. </FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TR>
<TD WIDTH="4%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="46%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></TD>
<TD WIDTH="2%"></TD>
<TD VALIGN="bottom" WIDTH="1%"></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">Date:</FONT></P></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>May 11, 2010</B></FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="right"><FONT STYLE="font-family:Times New Roman" SIZE="2">By:</FONT></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="center"><FONT STYLE="font-family:Times New Roman" SIZE="2">/<SMALL>S</SMALL>/&nbsp;&nbsp;&nbsp;&nbsp;S<SMALL>TEPHANIE</SMALL> J.
W<SMALL>ELTY&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SMALL></FONT></P></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>Stephanie J. Welty, Senior Vice President</B></FONT></TD></TR>
<TR>
<TD VALIGN="top"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom"></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="1"><B>and Chief Financial Officer</B></FONT></TD></TR></TABLE>
<P STYLE="margin-top:12px;margin-bottom:0px"><FONT STYLE="font-family:Times New Roman" SIZE="2">INSTRUCTION: The form may be signed by an executive officer of the registrant or by any other duly authorized representative. The name and title of the
person signing the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized representative (other that an executive officer), evidence of the representative&#146;s authority to
sign on behalf of the registrant shall be filed with the form. </FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="92%" BORDER="0" ALIGN="center">

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<TD VALIGN="bottom" WIDTH="1%"></TD>
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<TD VALIGN="top" STYLE="BORDER-BOTTOM:1px solid #000000"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="middle" ROWSPAN="2" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="3"><B>ATTENTION&nbsp;</B></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 SIZE="1">&nbsp;</FONT></TD></TR>
<TR>
<TD VALIGN="top" STYLE="BORDER-LEFT:1px solid #000000; padding-left:8px">&nbsp;</TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="bottom"><FONT SIZE="1">&nbsp;</FONT></TD>
<TD VALIGN="top" STYLE="BORDER-RIGHT:1px solid #000000; padding-right:8px">&nbsp;</TD></TR>
<TR>
<TD VALIGN="bottom" COLSPAN="5" STYLE="BORDER-LEFT:1px solid #000000; BORDER-RIGHT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-left:8px; padding-right:8px">
<P STYLE="margin-top:0px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>Intentional misstatements or omissions of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).</B></FONT></P>
<P STYLE="font-size:12px;margin-top:0px;margin-bottom:1px" align="left">&nbsp;</P></TD></TR></TABLE> <P STYLE="margin-top:12px;margin-bottom:0px" ALIGN="center"><FONT STYLE="font-family:Times New Roman" SIZE="2"><B>GENERAL INSTRUCTIONS
</B></FONT></P> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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<TD WIDTH="4%" VALIGN="top" ALIGN="left"><FONT STYLE="font-family:Times New Roman" SIZE="2">1.</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">This form is required by Rule 12b-25 (17 CFR 240.12b-25) of the General Rules and Regulations under the Securities Exchange Act of 1934. </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">2.</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">One signed original and four conformed copies of this form and amendments thereto must be completed and filed with the Securities and Exchange Commission, Washington,
D.C. 20549, in accordance with Rule 0-3 of the General Rules and Regulations under the Act. The information contained in or filed with the form will be made a matter of public record in the Commission files. </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">3.</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">A manually signed copy of the form and amendments thereto shall be filed with each national securities exchange on which any class of securities of the registrant is
registered. </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">4.</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2">Amendments to the notifications must also be filed on Form 12b-25 but need not restate information that has been correctly furnished. The form shall be clearly
identified as an amended notification. </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">5.</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><I>Electronic Filers: </I>This form shall not be used by electronic filers unable to timely file a report solely due to electronic difficulties. Filers unable to submit
reports within the time period prescribed due to difficulties in electronic filing should comply with either Rule 201 or Rule 202 of Regulations S-T (&#167;232.201 or &#167;232.202 of this chapter) or apply for an adjustment in filing date pursuant
to Rule 13(b) of Regulations S-T (&#167;232.13(b) of this chapter). </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">6.</FONT></TD>
<TD ALIGN="left" VALIGN="top"><FONT STYLE="font-family:Times New Roman" SIZE="2"><U>Interactive data submissions</U>. This form shall not be used by electronic filers with respect to the submission or posting of an Interactive Data File
(&#167;232.11 of this chapter). Electronic filers unable to submit or post an Interactive Data File within the time period prescribed should comply with either Rule 201 or 202 of Regulation S-T (&#167;232.201 and &#167;232.202 of this chapter).
</FONT></TD></TR></TABLE> <P STYLE="font-size:12px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" ALIGN="center">

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<P STYLE="margin-left:1.00em; text-indent:-1.00em"><FONT STYLE="font-family:Times New Roman" SIZE="2">SEC&nbsp;1344&nbsp;(04-09)</FONT></P></TD>
<TD VALIGN="bottom" STYLE="BORDER-TOP:1px solid #000000; BORDER-BOTTOM:1px solid #000000"><FONT SIZE="1">&nbsp;&nbsp;</FONT></TD>
<TD VALIGN="bottom" STYLE="BORDER-TOP:1px solid #000000; BORDER-RIGHT:1px solid #000000; BORDER-BOTTOM:1px solid #000000; padding-right:8px"><FONT STYLE="font-family:Times New Roman" SIZE="2">Persons who are to respond to the collection of
information contained in this form are not required to respond unless the form displays a currently valid OMB control number.</FONT></TD></TR></TABLE> <P STYLE="font-size:8px;margin-top:0px;margin-bottom:0px">&nbsp;</P>
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