X0303 4 2010-02-01 0 0000888504 LAYNE CHRISTENSEN CO LAYN 0001017043 OBUS NELSON 1 0 0 0 Common Stock 2010-02-01 4 A 0 1572 0 A 5681 D 4,991 of the 5,681 shares reported are held directly by the Reporting Person and 690 of the 5,681 shares reported are held indirectly by the Reporting Person. Wynnefield Capital Management, LLC, a New York limited liability company ("WCM") is the sole general partner of Wynnefield Partners Small Cap Value, L.P., a Delaware limited partnership (the "Partnership"). The Reporting Person is a co-managing member of WCM, and by virture of his positions with WCM and the Partnership, the Reporting Person has the shared power to vote and dispose of the 690 reported securities owned by the Partnership. The Reporting Person disclaims beneficial ownership of the 690 reported securities except to the extent of his pecuniary interest therein. /s/ Nelson Obus 2010-02-02