UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	October 13, 2015 11:00 A.M.

Form:	S-4
CIK: 0001372020 Company Name: Great Lakes Dredge & Dock CORP File Number: 333-206221
CIK: 0001070597 Company Name: DAWSON MARINE SERVICES CO File Number: 333-206221-09
CIK: 0001526375 Company Name: NASDI Holdings, LLC File Number: 333-206221-08
CIK: 0001070599 Company Name: FIFTY THREE DREDGING CORP File Number: 333-206221-07
CIK: 0001526363 Company Name: Great Lakes Dredge & Dock Company, LLC File Number: 333-206221-06
CIK: 0001639808 Company Name: Terra Fluid Management, LLC File Number: 333-206221-05
CIK: 0001639814 Company Name: Terra Contracting Services, LLC File Number: 333-206221-04
CIK: 0001639817 Company Name: Great Lakes Environmental & Infrastructure Solutions, LLC File Number: 333-206221-03
CIK: 0001140031 Company Name: GREAT LAKES DREDGE & DOCK ENVIRONMENTAL, INC File Number: 333-206221-02
CIK: 0001639815 Company Name: Magnus Pacific, LLC File Number: 333-206221-01