US ARMY CORPS OF ENGINEERS DREDGING CONTRACTS AWARDED. page 1of 10

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1 DISTRICT ALASKA OUZINKIE SBH B 5/13/ ,000 $3,304,108 $3,456,000 RED SAMM CONSTRUCTION S 5 DISTRICT BALTIMORE 20,000 $3,304,108 $3,456,000 ATL. COAST HURRICANE PROT. Y 3/17/1998 1,300,350 $9,311,930 $8,360,883 GREAT LAKES DREDGE & DOCK CO. L 3 BALTIMORE HARBOR & CHAN, MD. B 9/25/1998 2,839,760 $11,798,992 $14,622,000 WEEKS MARINE, INC.(GULF) L 2 HONGA RIV, DORCHESTER CO, MD P 8/27/ ,180 $889,386 $948,400 MARYLAND ENGINEERING & DRDG CO E 2 NEABSCO CK, P.WILLIAM, CO,VA B 11/18/ ,415 $906,636 $564,559 LAKE SERVICES,INC. S 4 PL 84-99, ASSATEAGUE ISLAND U 5/28/ ,370 $1,612,547 $1,762,420 WEEKS MARINE, INC.(GULF) L 2 ROCK HALL, KENT CO, MD P 1/22/1998 7,962 $308,104 $149,900 HAMPTON ROADS LEASING, INC. S 3 DISTRICT BUFFALO 4,434,037 $24,827,595 $26,408,161 CLEVELAND B 11/3/ ,000 $1,433,500 $1,645,000 LAKE MICHIGAN CONTRACTORS, INC E 2 DUNKIRK HARBOR B 3/25/ ,000 $135,270 $135,270 LAKE MICHIGAN CONTRACTORS, INC E 1 ERIE HARBOR B 1/6/ ,000 $357,000 $324,500 LUEDTKE ENGINEERING CO. S 2 HURON HARBOR B 3/10/ ,000 $385,000 $318,000 LAKE MICHIGAN CONTRACTORS, INC E 2 LORAIN B 4/16/ ,000 $567,000 $493,000 LUEDTKE ENGINEERING CO. S 3 SANDUSKY HARBOR B 2/24/ ,000 $664,000 $595,000 LAKE MICHIGAN CONTRACTORS, INC E 2 TOLEDO HARBOR B 1/28/ ,000 $421,500 $555,000 LAKE MICHIGAN CONTRACTORS, INC E 3 TOLEDO RIVER B 1/28/1998 1,000,000 $2,627,400 $2,576,000 LAKE MICHIGAN CONTRACTORS, INC E 2 DISTRICT CHARLESTON 2,015,000 $6,590,670 $6,641,770 MYRTLE BEACH REACH 3 H 3/19/1998 1,400,000 $8,791,000 $11,079,660 NATCO LIMITED PARTNERSHIP L 1 page 1of 10

2 1,400,000 $8,791,000 $11,079,660 DISTRICT CHICAGO WAUKEGAN HARBOR X 7/14/ ,000 $262,000 $371,000 KING COMPANY, INC. E 2 DISTRICT DETROIT 45,000 $262,000 $371,000 ARCADIA HARBOR, MI P 12/30/1997 5,500 $37,689 $24,470 M.C.M. MARINE INC. E 3 DETROIT RIVER, MI (PTE M.) B 3/31/ ,000 $391,000 $191,490 LAKE MICHIGAN CONTRACTORS, INC E 3 DULUTH-SUPERIOR HBR MN & WI B 2/27/ ,000 $578,600 $498,500 TNT DREDGING INC E 3 GRAND HAVEN HBR, MI (INNER) P 5/7/ ,000 $515,800 $285,800 KING COMPANY, INC. E 3 GREEN BAY HARBOR, WI B 6/19/ ,800 $1,651,200 $1,513,900 ROEN SALVAGE COMPANY E 2 HARBOR BEACH HARBOR, MI B 3/5/ ,000 $349,300 $368,000 LAKE MICHIGAN CONTRACTORS, INC E 3 HOLLAND HARBOR, MI(O) OPTYR P 2/7/ ,000 $109,395 $101,431 M.C.M. MARINE INC. E 2 KAWKAWLIN RIVER, MI (8A) B 6/19/ ,000 $205,732 $205,752 M.C.M. MARINE INC. E 1 LELAND HARBOR, MI P 12/30/ ,000 $72,038 $60,190 M.C.M. MARINE INC. E 3 LUDINGTON HARBOR, MI (8A) P 3/20/ ,000 $370,900 $370,900 M.C.M. MARINE INC. E 1 MANISTEE HARBOR, MI P 1/28/ ,000 $287,700 $343,200 KING COMPANY, INC. E 2 MONROE HARBOR, MI P 3/31/ ,000 $677,300 $464,531 LAKE MICHIGAN CONTRACTORS, INC E 3 ONTONAGON HARBOR, MI OPTYR P 12/20/ ,000 $287,000 $229,000 LUEDTKE ENGINEERING CO. S 4 PENTWATER HARBOR, MI P 12/30/ ,000 $95,448 $79,240 M.C.M. MARINE INC. E 3 PORT WING HARBOR, WI P 3/10/ ,000 $122,400 $108,650 TNT DREDGING INC E 4 SAGINAW RIVER, MI B 3/31/ ,000 $1,594,500 $1,491,579 LAKE MICHIGAN CONTRACTORS, INC E 2 ST JOSEPH HARBOR, MI (OUTER) P 12/30/ ,000 $153,000 $128,600 M.C.M. MARINE INC. E 3 DISTRICT GALVESTON 1,152,300 $7,499,002 $6,465,233 BIH, Main Channel P 3/20/1998 1,722,000 $2,319,909 $1,785,980 MIKE HOOKS INC. L 1 CCSC, Inside Chan. & Basins P 3/19/1998 1,870,000 $3,648,945 $4,039,520 MIKE HOOKS INC. L 2 Emerg,Ch.to Liberty Smith Pt P 7/10/ ,000 $228,000 $229,498 J.D. IVEY and CO. S 3 FREEPORT, Entrance Channel H 9/16/1998 2,370,000 $3,327,200 $2,912,000 BEAN HORIZON & STUYVESANT JV L 3 page 2of 10

3 FREEPORT, Inside Chl & Basin P 8/18/1998 1,300,000 $2,023,596 $2,079,450 KING FISHER MARINE SERV., INC. L 4 GIWW, Across Aransas Bay P 7/7/1998 1,800,000 $1,137,700 $1,239,472 KING FISHER MARINE SERV., INC. L 2 GIWW, Port Isabel to ARROYO P 1/16/1998 1,000,000 $3,405,050 $3,405,050 KING FISHER MARINE SERV., INC. L 1 GIWW,BOGGY TO COLO RIVER P 7/29/1998 3,500,000 $5,873,732 $6,676,920 RENDA MARINE INC. S 2 HGNC, Lower Bay P 7/23/1998 8,400,000 $42,197,647 $52,285,040 GREAT LAKES DRDG & DOCK/GULF L 1 HGNC, Offshore Reach W 7/16/ ,200,000 $8,719,627 $10,817,000 BEAN HORIZON & STUYVESANT JV L 3 HGNC, UPPER BAYOU P 7/17/1998 3,483,700 $13,610,400 $12,526,100 RENDA MARINE INC. S 5 HSC, RF Reef to MP, Atk Isl P 12/17/1997 2,700,000 $3,594,018 $3,937,630 T.L. JAMES & CO., INC. L 1 MSC, Mata Pen to Pt Comfort P 10/9/1997 5,000,000 $3,221,000 $2,466,025 KING FISHER MARINE SERV., INC. L 2 SNWW, Sabine Jetty,Bar& Bank H 7/17/1998 3,500,000 $8,493,070 $3,183,060 WEEKS MARINE, INC.(GULF) L 4 SNWW, Sabine Neches Canal P 11/24/1997 2,070,000 $4,648,097 $3,770,445 MIKE HOOKS INC. L 3 TX CITY, TB & Ind Canal P 8/14/1998 1,500,000 $2,332,140 $2,885,600 T.L. JAMES & CO., INC. L 5 VICTORIA, new work reach #2a P 1/16/ ,000 $4,968,793 $3,865,050 KING FISHER MARINE SERV., INC. L 4 DISTRICT HONOLULU 53,082,700 $113,748,924 $118,103,840 HALEIWA HARBOR HI B 7/26/1998 4,500 $473,500 $537,010 NORTH PACIFIC CONSTRCUTION INC S 3 DISTRICT HUNTINGTON 4,500 $473,500 $537,010 BIG SANDY HARBOR B 3/31/ ,000 $3,282,400 $2,515,107 MADISON COAL & SUPPLY CO. L 2 KANAWHA RIVER B 4/21/ ,000 $20,500 $18,500 MADISON COAL & SUPPLY CO. L 1 PORTSMOUTH HARBOR P 6/30/ ,000 $194,670 $197,900 MIDWEST DREDGE & EXCVATING INC S 2 DISTRICT JACKSONVILLE 345,000 $3,497,570 $2,731,507 CANAVERAL HBR, 98 B 12/23/ ,000 $2,865,000 $3,373,525 WEEKS MARINE, INC.(GULF) L 3 CANV SAND BYPASS #2 (re-adv) P 12/19/ ,000 $4,922,000 $4,824,850 BEAN HORIZON CORPORATION L 3 DADE CO/SURFSIDE RENOUR/CT#2 H 8/25/ ,000 $9,226,320 $11,779,100 NATCO LIMITED PARTNERSHIP L 1 IWW BAKERS HAULOVER, SS-8a P 2/9/ ,000 $1,988,441 $1,804,654 LAKE MICHIGAN CONTRACTORS, INC E 1 page 3of 10

4 JACKSONVILLE HBR, 98 P 6/25/ ,000 $5,650,000 $3,486,240 THE M OPERATING CO, INC E 3 KINGS BAY E.C., 98 H 10/30/1997 1,060,000 $5,804,000 $6,286,000 WEEKS MARINE, INC.(GULF) L 1 MANATEE HARBOR P 9/11/ ,000 $2,661,000 $3,520,510 MARINEX DREDGING CO S 3 PALM BCH / FT PIERCE HBRS 98 H 10/28/ ,000 $2,853,000 $2,669,000 GULF COAST TRAILING CO. L 2 SAN JUAN HBR, CT. #1 (NW) B 6/9/1998 3,591,000 $10,063,734 $6,991,930 NORFOLK DREDGING COMPANY L 5 TAMPA HBR, HILLS. BAY, 98 P 11/6/1997 1,358,000 $5,551,000 $6,654,750 HENDRY CORPORATION S 3 DISTRICT LITTLE ROCK 9,785,000 $51,584,495 $51,390,559 MCCLELLAN-KERR NAV. SYSTEM P 11/25/1997 1,300,000 $1,575,106 $1,443,375 PENTZIEN. INC. S 2 DISTRICT LOS ANGELES 1,300,000 $1,575,106 $1,443,375 MARINA DEL REY EMER. DRED'G. B 3/3/ ,000 $1,803,700 $920,000 MANSON CONSTRUCTION CO L 2 MORRO BAY MAINT. DREDGING Y 11/13/ ,670 $2,822,520 $2,200,000 MANSON CONSTRUCTION CO L 1 NEWPORT HARBOR MAINT. DRED'G B 9/22/ ,000 $1,875,107 $1,598,000 MANSON CONSTRUCTION CO L 4 OCEANSIDE HARBOR B 12/2/ ,090 $4,564,080 $4,470,000 MANSON CONSTRUCTION CO L 1 POLB MAIN CHANNEL DEEPENING H 7/16/1998 4,970,400 $18,813,950 $13,793,000 NATCO LIMITED PARTNERSHIP L 3 SANTA BARBARA HARBOR (2 yrs) P 7/23/1998 1,569,600 $4,360,500 $3,947,100 J.R. FILANC INC. CONSTR CO L 3 VENTURA HARBOR MAINT DREDG'G P 9/8/ ,000 $6,546,800 $6,796,600 MANSON CONSTRUCTION CO L 2 DISTRICT LOUISVILLE 8,701,760 $40,786,657 $33,724,700 LICKING RIVER/PUBLIC RAMPS P 3/31/ ,000 $436,620 $297,500 COCKRELL DREDGING, INC S 4 OHIO RIVER OPEN CHANNEL P 2/11/1998 1,000,000 $3,002,959 $3,207,737 LUHR BROS. INC. L 1 DISTRICT MEMPHIS 1,030,000 $3,439,579 $3,505,237 MISS. RIVER & HARBORS P 4/28/1998 2,400,000 $2,511,467 $2,865,378 T.L. JAMES & CO., INC. L 2 page 4of 10

5 WHITE RIVER DREDGE P 4/14/1998 1,650,000 $1,735,761 $1,520,200 CARTER CONSTRUCTION CO., INC E 2 DISTRICT MOBILE 4,050,000 $4,247,228 $4,385,578 Alabama River System P 3/19/1998 2,500,000 $3,006,050 $3,283,440 MIKE HOOKS INC. L 4 Apal/Chatt/Flint Rivers GIWW P 11/20/1997 2,500,000 $4,482,230 $5,136,865 HENDRY CORPORATION S 3 BW&T River 98 P 2/10/1998 2,500,000 $3,250,605 $3,498,330 MIKE HOOKS INC. L 4 Carrabelle 98 P 11/25/ ,000 $752,009 $492,832 M.C.M. MARINE INC. E 11 GIWW 8A 98 P 7/8/ ,000 $2,393,846 $2,371,330 LAKE MICHIGAN CONTRACTORS, INC E 1 Gulfport Harbor 98 P 6/23/1998 1,800,000 $1,773,374 $2,114,000 BEAN HORIZON CORPORATION L 1 Harrison Co Industrial Seawy P 12/23/ ,000 $570,314 $449,000 LAKE MICHIGAN CONTRACTORS, INC E 5 Mobile Harbor Bay/Bar #1-99 H 8/13/1998 2,250,000 $5,853,387 $5,488,138 B+B DREDGING CORPORATION S 3 Mobile Harbor Bay/Bar #2-98 H 2/10/1998 3,150,000 $7,553,928 $8,860,454 BEAN HORIZON CORPORATION L 3 Mobile River 98 B 3/17/1998 1,000,000 $6,166,573 $7,477,500 GREAT LAKES DRDG & DOCK/GULF L 3 Pascagoula Snd/Bayou Cos 98 P 4/15/1998 2,400,000 $2,375,029 $2,648,010 BEAN HORIZON CORPORATION L 3 Tenn-Tom Waterway 98 P 3/10/1998 1,000,000 $2,221,298 $2,735,720 HENDRY CORPORATION S 1 DISTRICT NEW ENGLAND 20,107,000 $40,398,642 $44,555,618 Boston Harbor, MA. B 3/20/1998 4,700,000 $42,000,000 $26,905,500 GREAT LAKES DREDGE & DOCK CO. L 4 COHASSET HARBOR, MASS B 7/1/ ,500 $1,346,300 $1,248,055 BURNHAM ASSOCIATES, INC. E 5 PORTLAND HARBOR, MAINE B 8/21/ ,000 $6,911,500 $3,318,800 GREAT LAKES DREDGE & DOCK CO. L 6 DISTRICT NEW ORLEANS 5,496,500 $50,257,800 $31,472,355 3 RIV ORL FBAY PAL FBAY BR H P 8/4/ ,000 $1,177,380 $1,364,405 T.L. JAMES & CO., INC. L 2 ATCH RIV BAR CHANN CY FY98 P 5/27/1998 6,000,000 $4,125,300 $4,491,000 T.L. JAMES & CO., INC. L 1 ATCH RIV H/SHOE LSD CUT 3-97 P 8/13/1997 1,000,000 $1,772,820 $1,349,080 T.L. JAMES & CO., INC. L 2 ATCH RIV HORSESHOE LSD CUT-1 P 7/13/1998 1,000,000 $4,173,417 $4,836,275 T.L.JAMES/GREAT LAKES JV L 1 ATCH RV BY CHENE,BOEUF,BLACK P 5/6/1998 6,000,000 $8,205,800 $5,274,000 T.L. JAMES & CO., INC. L 3 page 5of 10

6 BAPTISTE COLLETTE BR CH 1-98 P 11/25/ ,000 $1,132,170 $1,678,400 T.L. JAMES & CO., INC. L 3 BERWICK BAY LSD CUTTER #1-98 P 2/20/ ,000 $840,338 $753,071 MIKE HOOKS INC. L 1 BERWICK BAY LSD CUTTER #2-98 P 6/3/1998 2,000,000 $2,201,615 $2,746,877 T.L. JAMES & CO., INC. L 1 BY TECHE E&W CALUMET FLDGT P 11/20/ ,000 $121,270 $51,500 RAM INDUSTRIES, INC. S 3 CALC RIV MI & DEV ELBO P 7/20/1998 6,500,000 $5,924,900 $7,080,000 WEEKS MARINE, INC.(GULF) L 3 CALC RV BAR CH LSD HOP FY98 H 12/10/1997 1,781,532 $2,743,482 $3,329,660 NATCO LIMITED PARTNERSHIP L 2 GIWW BELOW BY SORREL LK CY98 P 8/21/ ,000 $891,500 $660,500 MIKE HOOKS INC. L 3 GIWW BELOW BY SORREL LK FY97 P 8/25/ ,000 $650,000 $527,300 MIKE HOOKS INC. L 3 HOUMA NAV CANAL CY FY98 P 6/30/1998 1,300,000 $3,186,200 $3,773,000 BEAN HORIZON CORPORATION L 1 HOUMA NAV CAT ISL, EMERGENCY H 11/26/ ,000 $444,906 $439,225 GULF COAST TRAILING CO. L 2 MISS RIV SWP CY CUTTER 1-98 P 3/31/1998 3,000,000 $3,950,290 $4,081,000 GREAT LAKES DREDGE & DOCK CO. L 2 MISS RIV SWP LSD CUTTER 1-97 P 7/21/1997 3,000,000 $3,612,820 $3,360,000 T.L. JAMES & CO., INC. L 2 MISS RIV SWP LSD HOPP H 6/2/1998 1,000,000 $1,145,700 $1,314,000 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPP H 6/9/1998 1,000,000 $1,145,700 $1,238,314 WEEKS MARINE, INC.(GULF) L 2 MISS RIV SWP LSD HOPP H 6/12/1998 1,000,000 $1,145,700 $1,289,700 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPP H 6/30/1998 1,000,000 $1,145,700 $1,262,700 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPP H 7/9/1998 1,000,000 $1,141,000 $1,260,975 WEEKS MARINE, INC.(GULF) L 2 MISS RIV SWP LSD HOPPER 1-98 H 3/10/1998 6,800,000 $3,168,729 $3,767,400 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPPER 2-98 H 3/26/1998 6,800,000 $1,999,692 $2,366,660 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPPER 3-98 H 1/30/1998 2,300,000 $1,129,879 $1,323,440 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPPER 4-98 H 2/4/1998 2,300,000 $1,321,670 $1,590,350 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPPER 5-98 H 2/10/1998 2,300,000 $1,377,100 $1,620,350 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPPER 6-98 H 2/19/1998 2,300,000 $1,936,880 $2,257,750 BEAN HORIZON CORPORATION L 1 MISS RIV SWP LSD HOPPER 7-98 H 3/17/1998 2,300,000 $1,971,780 $2,373,144 NATCO LIMITED PARTNERSHIP L 1 MISS RIV SWP LSD HOPPER 8-98 H 3/24/1998 2,300,000 $1,971,780 $2,279,020 GULF COAST TRAILING CO. L 2 MISS RIV SWP LSD HOPPR H 12/3/1997 2,300,000 $767,368 $774,475 GULF COAST TRAILING CO. L 2 MISS RV N.O. HAR LSD CT 2-98 P 5/27/1998 2,000,000 $2,028,120 $2,186,201 T.L. JAMES & CO., INC. L 1 MRGO BAR CH MI -3.8 TO -9.0 P 8/6/1997 1,300,000 $2,232,000 $1,467,000 BEAN HORIZON CORPORATION L 2 MRGO MI 23.0 TO MI -3.3 CY98 P 7/30/ ,500,000 $8,949,000 $10,893,000 GREAT LAKES DREDGE & DOCK CO. L 2 N.O. HARB LSD CUTT/WATER INJ N 1/21/1998 7,000,000 $851,201 $738,175 GULF COAST TRAILING CO. L 2 TANGIPAHOA RIV BAR CHAN CY98 P 8/3/ ,000 $675,400 $796,127 LAKE MICHIGAN CONTRACTORS, INC E 1 VERMILION RV NR LAFAYETTE CY B 5/22/ ,000 $547,750 $477,000 LUHR BROS. INC. L 3 WEST BELLE PASS HEADLAND RES P 1/9/1998 2,500,000 $5,560,380 $4,834,155 T.L. JAMES & CO., INC. L 3 page 6of 10

7 DISTRICT NEW YORK 92,413,532 $87,366,737 $91,905,229 Beach Nourishment,Sandy Hook H 11/14/ ,500 $3,049,430 $4,449,950 GREAT LAKES DREDGE & DOCK CO. L 1 Elizabeth Channel, Newark Ba B 3/23/ ,995 $6,254,642 $5,751,820 NORFOLK DREDGING COMPANY L 4 Gravesend Bay-Anchorage H 4/16/ ,409 $798,371 $891,745 GULF COAST TRAILING CO. L 2 Hudson River Chan, Albany,NY H 1/9/ ,000 $2,140,713 $2,455,400 GREAT LAKES DREDGE & DOCK CO. L 1 Jamaica Bay, NY H 9/10/ ,000 $1,641,829 $1,518,423 WEEKS MARINE, INC.(GULF) L 3 Shinnecock & Moriches Inlets Y 8/13/ ,782 $2,857,356 $2,706,104 WEEKS MARINE, INC.(GULF) L 2 Shoal Harbor & Compton Creek P 9/18/ ,415 $841,180 $736,207 WICKBERG MARINE CONSTR L 3 DISTRICT NORFOLK 1,717,101 $17,583,520 $18,509,649 CHANNEL TO NEWPORT NEWS P 9/1/ ,000 $1,272,840 $1,961,450 NORFOLK DREDGING COMPANY L 3 CHINCOTEAGUE INLET OCEAN BAR H 6/10/ ,000 $644,900 $336,090 WEEKS MARINE, INC.(GULF) L 3 NANDUA CREEK P 9/9/ ,000 $267,650 $114,000 COTTRELL ENGINEERING CORP. S 2 NORFOLK HARBOR 45'/50' P 9/8/ ,000 $2,098,500 $1,821,000 NORFOLK DREDGING COMPANY L 4 NORFOLK HARBOR SOUTHERN BR B 9/8/ ,000 $334,800 $295,150 NORFOLK DREDGING COMPANY L 4 OYSTER CHANNEL P 9/8/ ,000 $352,870 $91,000 COTTRELL ENGINEERING CORP. S 2 RUDEE INLET P 3/19/ ,000 $662,920 $471,303 MARINEX DREDGING CO S 4 SANDBRIDGE BEACH, VIRGINIA Y 4/1/1998 1,300,000 $9,211,100 $9,399,000 GREAT LAKES DREDGE & DOCK CO. L 2 WCV-NORTH, SLOOP&BURTON BAY P 5/5/ ,500 $773,250 $479,625 COTTRELL ENGINEERING CORP. S 5 YORK RIVER ENTRANCE CHANNEL Z 5/28/ ,000 $3,593,520 $3,188,200 GREAT LAKES DREDGE & DOCK CO. L 2 DISTRICT PHILADELPHIA 3,518,500 $19,212,350 $18,156,818 CEDAR CREEK P 8/25/ ,000 $229,538 $183,625 COTTRELL ENGINEERING CORP. S 3 DELAWARE RIVER PHILA TO SEA W 8/20/ ,000 $2,385,192 $3,139,000 WEEKS MARINE, INC.(GULF) L 2 DELAWARE RIVER, PHILA TO SEA W 6/25/1998 2,480,000 $4,464,936 $3,372,500 NORFOLK DREDGING COMPANY L 2 IWW,REHOBETH BAY TO DEL. BAY P 8/25/ ,500 $247,131 $181,500 COTTRELL ENGINEERING CORP. S 3 page 7of 10

8 MISPILLION RIVER P 8/25/ ,700 $199,671 $140,895 COTTRELL ENGINEERING CORP. S 3 MURDERKILL RIVER, DE. P 8/25/ ,000 $302,396 $173,700 COTTRELL ENGINEERING CORP. S 3 NJIWW/TUCKERTON CREEK P 3/3/ ,000 $1,819,113 $1,450,050 BARNEGAT BAY DREDGING COMPANY E 2 SCHUYLKILL RIVER, PA W 8/12/ ,000 $1,559,282 $1,851,714 WEEKS MARINE, INC.(GULF) L 2 WILMINGTON HARBOR P 6/23/ ,100 $597,069 $597,069 NORFOLK DREDGING COMPANY L 2 DISTRICT PITTSBURGH 3,934,300 $11,804,326 $11,090,053 CONEMAUGH DREDGING B 187,764 $1 $1 HARVE CODY S 1 DISTRICT PORTLAND 187,764 $1 $1 BONNEVILLE DAM PH2 EM DREDG B 10/9/ ,000 $1,122,600 $935,000 HICKEY MARINE ENTERPRISES S 5 Columbia River Mouth & Lower H 5/5/1998 1,800,000 $2,970,115 $2,993,250 MANSON CONSTRUCTION CO L 2 Port Orford 3-Year Contract N 11/25/ ,500 $2,112,138 $888,000 NEHALEM RIVER DREDGING E 2 Port Orford Sauerman P.O. B 3/9/1998 3,000 $35,340 $47,164 BOB ANGELL, INC S 2 ROGUE RIVER, GOLD BEACH BB X 5/11/ ,000 $163,098 $127,200 NEHALEM RIVER DREDGING E 3 DISTRICT SAN FRANCISCO 1,896,500 $6,403,291 $4,990,614 CRESCENT CITY HARBOR X 8/20/ ,000 $450,370 $252,500 NEHALEM RIVER DREDGING E 3 OAKLAND HARBOR (Inner) H 9/12/ ,000 $895,359 $723,000 GREAT LAKES DREDGE & DOCK CO. L 3 Oakland Harbor (Outer) H 7/10/ ,700 $1,235,020 $1,530,260 MANSON CONSTRUCTION CO L 4 Petaluma River (ATF) H 9/10/ ,800 $1,948,979 $1,058,200 MANSON CONSTRUCTION CO L 3 SUISUN BAY CHANNEL H 5/22/ ,000 $1,478,663 $1,236,800 MANSON CONSTRUCTION CO L 1 DISTRICT SAVANNAH 1,554,500 $6,008,391 $4,800,760 EAST RIVER P 8/24/ ,000 $537,200 $649,300 MARINEX DREDGING CO S 2 page 8of 10

9 SH ST & 0-(-14B) P 3/20/1998 5,520,000 $9,694,810 $5,862,055 NORFOLK DREDGING COMPANY L 4 DISTRICT SEATTLE 6,020,000 $10,232,010 $6,511,355 EVERETT HARBOR, WA P 9/14/ ,000 $1,265,500 $965,000 MANSON CONSTRUCTION CO L 2 Lake Crockett B 9/22/ ,000 $224,000 $160,500 A.H. POWERS INC. S 3 QUILLAYUTE RIVER P 1/6/ ,000 $977,000 $791,948 MCDOUGAL CONSTRUCTION CORP S 4 Quillayute River X 8/28/ ,000 $880,760 $1,121,700 PORTABLE HYDRAULIC DREDGING E 3 WILLAPA HARBOR, WA B 9/3/ ,000 $209,000 $191,000 A.H. POWERS INC. S 2 DISTRICT ST.LOUIS 660,000 $3,556,260 $3,230,148 SLD-UMR,IL,KAS,SEMO,OHIO P 3/30/ ,000 $1,228,360 $1,425,319 GREAT LAKES DREDGE & DOCK CO. L 1 DISTRICT VICKSBURG 750,000 $1,228,360 $1,425,319 MISSISSIPPI RIVER HARBORS P 4/14/ ,000 $2,567,235 $3,103,100 PINE BLUFF SAND & GRAVEL CO. L 2 OUACHITA & BLACK RIVERS P 4/9/ ,000 $1,558,173 $1,735,000 RIVER/GULF MARINE LLC L 3 RED RIVER WATERWAY P 4/7/1998 3,000,000 $2,554,990 $2,878,750 PINE BLUFF SAND & GRAVEL CO. L 2 UPPER YAZOO ITEM 3B-2 P 4/21/1998 1,000,000 $5,686,130 $5,926,550 INLAND DREDGING COMPANY LLC S 5 DISTRICT WALLA WALLA 5,700,000 $12,366,528 $13,643,400 CONFL CLEARWATER & SNAKE R B 11/13/ ,202 $2,282,949 $1,967,000 MANSON CONSTRUCTION CO L 2 MCNARY RESERVOIR B 12/29/ $190,100 $192,238 ZYGOTECH INC S 5 333,202 $2,473,049 $2,159,238 page 9of 10

10 DISTRICT WILMINGTON AIWW INLET XINGS P 10/2/ ,000 $1,441,400 $962,000 COTTRELL ENGINEERING CORP. S 3 AIWW THRU CHANNEL P 10/28/ ,000 $2,428,985 $2,387,000 COTTRELL ENGINEERING CORP. S 3 AIWW-WILM/BEAR TO BROWN P 11/20/ ,000 $1,653,440 $1,532,974 SOUTHERN DREDGING CO., INC. E 3 CAROLINA BEACH NORTH/BCH REN P 1/6/1998 1,500,000 $2,751,256 $2,579,350 GREAT LAKES DREDGE & DOCK CO. L 3 MAINT DREDG MOTSU P 2/20/1998 1,500,000 $2,128,000 $1,368,800 WRIGHT DREDGING CO. E 3 MANTEO SHALLOWBAG BAY (OCEAN H 7/9/ ,000 $1,441,400 $1,009,500 B+B DREDGING CORPORATION S 3 MASONBORO & WRIGHTSVILL B. P 1/6/1998 1,409,222 $3,756,671 $3,419,458 WEEKS MARINE, INC.(GULF) L 3 WILM HARB (OCEAN B./38-FT) H 10/8/ ,000 $2,877,000 $2,597,240 NATCO LIMITED PARTNERSHIP L 2 WILM HARBR(ANCH BASIN 38-FT) P 7/9/ ,000 $2,279,500 $2,291,724 SOUTHERN DREDGING CO., INC. E 2 6,633,222 $20,757,652 $18,148,046 Dredge Type B Bucket D Dustpan H Hopper N Nonconventional P Pipeline S Sidecaster I Water Injection W Combination - All Types X Pipeline & Bucket Y Pipeline & Hopper Z Hopper & Bucket U Undefined Status of Business E Emerging Small L Large S Small page 10of 10