Attachment B

Design and Cost Estimates

Great Chebeague Island - StoneWharf - Total Haul Distance to: Miles

Broad Sound (Royal River) Historic Site 4.7

Outer Broad Sound Bell Buoy Site (233-Foot Site) 6.8

Luckse Sound Historic Site 9.8

Cape Elizabeth (Ram Island) Historic Site 12.7

Portland Disposal Site (103 Ocean Site) 15.7

GREAT CHEBEAGUE ISLAND, MAINESECTION 107 INITIAL APPRAISAL

DISTANCES TO OPEN-WATER DISPOSAL SITESOne-Way Haul Distance - From NOAA Chart #13290 "Casco Bay"

B-1

HISTORIC ROYAL RIVER SITE BROAD SOUND - UPPER CASCO BAY

B-2

1/21/2014 10:44 AM

MECHANICAL DREDGE ESTIMATE For Official Use OnlyGreat Chebeague Isl Feasibility Estimate Plan A - 21Jan2014edit - Me50B.xls Page ____

MOBIL & DEMOB COST: $237,594 BID QUANTITY 32,800 C.Y. UNIT COST... $8.34 PER C.Y.

Great Chebeaque Island Plan "A" Reconnaissance Edi EXCAV. COST. $273,552CHECKLIST FOR INPUT DATA. TIME........ 0.25 MONTHS

PG 1.........PROJECT - Great Chebeaque Island Plan "A" Reconnaiss | PG 7..............DREDGES - 1LOCATION - Maine 21Jan14 edit | SCOWS @ DREDGE - 1

INVIT # - DACW17-98-B-0000 | TOWING VESSELS - 1DATE OF EST. - 16 Dec2013 | SCOWS PER TOW - 1

EST. BY - William McIntyre | ADDITIONAL SCOWS - 0MOB. BID ITEM # - 1 | TOT SCOWS ON JOB - 2

EXCAV. BID ITEM # - 2 || PG 8....QTRS ON DREDGE? - NO

PG 2..........TYPE OF EST. - Planning Estimate | SURVEY BOAT? - YESCONTRACTOR'S O.H. - 20.0% | CREW BOAT? - YES

CONTRACTOR'S PROFIT - 10.0% |CONTRACTOR'S BOND - 2.0% | PG 9...SP COST/MO (1ST) - $0 $0

| SP COST/MO (2ND-14TH) - $0 From Sheet D\4

PG 3...DREDGING AREA - 181,420 sf | SPECIAL COST LS (1ST) - $10,000 PermitREQ'D EXCAVATION - 26,400 cyds | SP COST LS (2ND-14TH) - $0 From Sheet E

PAY OVERDEPTH - 6,400 cyds |

CONTRACT AMOUNT - 32,800 cyds | PG 10....PRESENT YEAR - 2013NOT DREDGED - 0 cyds | ECONOMIC INDEX - 8102

NET PAY - 32,800 cyds | LAF - 1.120

NONPAY YARDAGE - 3,400 cyds | INTEREST RATE - 1.750% /yrGROSS YARDAGE - 36,200 cyds | TIME PERIOD - June - Dec 2013

NONPAY HEIGHT - 0.5 ft overdig | PIPELINE AVAILABILITY - 9 mos/yrTOTAL BANK HEIGHT - 5.4 ft | BUCKET AVAILABILITY - 10 mos/yr

| HOPPER AVAILABILITY - 10 mos/yr

PG 4.......DREDGE SEL. - 8 CY CLAMSHELL | FUEL PRICE - $3.40 /galTYPE OF MATERIAL - MUD |

BUCKET SIZE - 8 |

BUCKET FILL FACTOR - 1.00 |OPTIMUM BANK - 4.5 |

BANK FACTOR - 0.96 | EXCAVATION PRODUCTION - 413 cy/hr (gross)| EXCAVATION EWT - 55.0% ( 402 hrs/mo )

PG 5......BUCKET CYCLE - 50 Seconds | EXCAVATION TIME - 0.22 monthsOTHER FACTOR - 0.90 > |

CLEANUP - 20% More Time | HAULING PRODUCTION - 358 cy/hr (gross)TIME EFFICIENCY - 55.0% of EWT | HAULING EWT - 55.0% ( 402 hrs/mo )

| HAULING TIME - 0.25 months

PG 6...TUG DESCRIPT. - 1000 HP Diesel--Twin Screw |PREPARE SCOW TOW - 15 min | DREDGING TIME - 0.25 months

HAUL DIST - 4.2 mi | EXCAVAT EWT (ADJUSTED) - 348 hrs/mo ( 47.7% EWT)SPEED TO D/A - 6 mph (42 min ) | HAULING EWT (ADJUSTED) - 402 hrs/mo ( 55.1% EWT)

SPEED FROM D/A - 7 mph (36 min ) |DUMP OR PUMPOUT - 10 min | PRODUCTION (GROSS) - 143,916 cy per month

DISENGAGE TOW - 10 min | PRODUCTION (CONTRACT) - 131,200 pay cy per monthTOW EFFICIENCY - 55 % |

SCOW DESCRIPTION - 1,500 CY Split Hull Scow |USEABLE VOLUME - 90 % |

% SOLIDS - 50 % ( 675 cy/load ) |

B-3

1/21/2014 10:36 AM

MECHANICAL DREDGE ESTIMATE For Official Use OnlyGreat Chebeague Isl-add Anchorage Dredging Plan B edit- 21Jan2014 - Me50B.xls Page ____

MOBIL & DEMOB COST: $237,554 BID QUANTITY 76,900 C.Y. UNIT COST... $17.41 PER C.Y.

Great Chebeaque Isl.,add Anchorage to Plan "B" edit EXCAV. COST. $1,338,829CHECKLIST FOR INPUT DATA. TIME........ 1.35 MONTHS

PG 1.........PROJECT - Great Chebeaque Isl.,add Anchorage to Plan | PG 7..............DREDGES - 1LOCATION - Maine 21Jan2014 | SCOWS @ DREDGE - 1

INVIT # - DACW17-98-B-0000 | TOWING VESSELS - 1DATE OF EST. - 18 Dec2013 | SCOWS PER TOW - 1

EST. BY - William McIntyre | ADDITIONAL SCOWS - 0MOB. BID ITEM # - 1 | TOT SCOWS ON JOB - 2

EXCAV. BID ITEM # - 2 || PG 8....QTRS ON DREDGE? - NO

PG 2..........TYPE OF EST. - Planning Estimate | SURVEY BOAT? - YESCONTRACTOR'S O.H. - 20.0% | CREW BOAT? - YES

CONTRACTOR'S PROFIT - 10.0% |CONTRACTOR'S BOND - 2.0% | PG 9...SP COST/MO (1ST) - $0 $0

| SP COST/MO (2ND-14TH) - $0 From Sheet D\4

PG 3...DREDGING AREA - 903,800 sf | SPECIAL COST LS (1ST) - $10,000 PermitREQ'D EXCAVATION - 48,000 cyds | SP COST LS (2ND-14TH) - $0 From Sheet E

PAY OVERDEPTH - 28,900 cyds |

CONTRACT AMOUNT - 76,900 cyds | PG 10....PRESENT YEAR - 2013NOT DREDGED - 0 cyds | ECONOMIC INDEX - 8102

NET PAY - 76,900 cyds | LAF - 1.120

NONPAY YARDAGE - 16,700 cyds | INTEREST RATE - 1.750% /yrGROSS YARDAGE - 93,600 cyds | TIME PERIOD - June 2013-Dec2013

NONPAY HEIGHT - 0.5 ft overdig | PIPELINE AVAILABILITY - 9 mos/yrTOTAL BANK HEIGHT - 2.8 ft | BUCKET AVAILABILITY - 10 mos/yr

| HOPPER AVAILABILITY - 10 mos/yr

PG 4.......DREDGE SEL. - 8 CY CLAMSHELL | FUEL PRICE - $3.40 /galTYPE OF MATERIAL - MUD |

BUCKET SIZE - 8 |

BUCKET FILL FACTOR - 1.00 |OPTIMUM BANK - 4.5 |

BANK FACTOR - 0.40 | EXCAVATION PRODUCTION - 172 cy/hr (gross)| EXCAVATION EWT - 55.0% ( 402 hrs/mo )

PG 5......BUCKET CYCLE - 50 Seconds | EXCAVATION TIME - 1.35 monthsOTHER FACTOR - 0.90 > |

CLEANUP - 20% More Time | HAULING PRODUCTION - 358 cy/hr (gross)TIME EFFICIENCY - 55.0% of EWT | HAULING EWT - 55.0% ( 402 hrs/mo )

| HAULING TIME - 0.65 months

PG 6...TUG DESCRIPT. - 1000 HP Diesel--Twin Screw |PREPARE SCOW TOW - 15 min | DREDGING TIME - 1.35 months

HAUL DIST - 4.2 mi | EXCAVAT EWT (ADJUSTED) - 402 hrs/mo ( 55.1% EWT)SPEED TO D/A - 6 mph (42 min ) | HAULING EWT (ADJUSTED) - 193 hrs/mo ( 26.4% EWT)

SPEED FROM D/A - 7 mph (36 min ) |DUMP OR PUMPOUT - 10 min | PRODUCTION (GROSS) - 69,144 cy per month

DISENGAGE TOW - 10 min | PRODUCTION (CONTRACT) - 56,963 pay cy per monthTOW EFFICIENCY - 55 % |

SCOW DESCRIPTION - 1,500 CY Split Hull Scow |USEABLE VOLUME - 90 % |

% SOLIDS - 50 % ( 675 cy/load ) |

B-4

Last First Boat Name Length Beam Draft <3.5 Feet

3.5 to 4.5 Feet

4.5 to 5.5

Feet

5.5 to 6.5

Feet

6.5 to 7.5 Feet

>7.5 Feet

1 Bowman Lee Caitlin Marie 28 10 5 12 Bowman Mark Summer Girl 21 7 3 13 Burgess Ernest Susan Adams 32.6 10.4 4 14 Campbell David Amada E. 32.1 10.5 4.8 15 Campbell Kenneth Drea Marie 32 10.5 4.8 16 Doughty Amos Dragon 2 28 9 4 17 Doughty Justin Frankie B 30 10 3.5 18 Doughty Nathan Retriever 36 13.2 5 19 Dropping/Springs Stephen/Todd Heidi and Hester 60 18 7 110 Dyer Joseph Amanda J 32 10.4 4.8 111 Dyer Williard Elva Jean 31.9 11.5 5.3 112 Hamilton Jason Alissa J. 35.8 12.3 4 113 Hamilton Jeffrey Andrew and I 35 11.8 6 114 Higgins James 28 11 4 115 Houghton Winthrop Miss Ruby 25 9.7 5 116 Hutchinson Bruce Heidi M 30 10 4 117 Johnson Stephen Osprey 38.1 12.8 6.6 118 Jordan John Storm Walker 119 Martin Christopher Sara Ellen 120 Martin 22 10 3 121 Miller David Gail Elaine 36 12 6 122 Munroe Ralph Lobster Skiff 20 6 2 123 Nida Carleton DJ 20 6 3 124 Nintenner David Different Tactics 45 17 6 125 Olsen Mark Woodcutter 43 14 5 126 Parmenter Rusty Patricia Ann 42 15 7 127 Putnam Jeff Captain B 44 15 6 128 Rich Christopher Stelias 36 11 5 129 Rich David Miss Robinson 36 12 4 130 Rich Patricia Resistance 34 11.5 4.5 131 Rich Patricia Sea Smoke 36 12 6 132 Rich Herbert Precill 25 10 3 133 Rich Sherman Kelly Anne 38 14 5 134 Riddle Barry Tin Lilly 32 11 4 135 Riddle Gregory Ocean Hooker 48 17 7 136 Riddle Melanie Boundy Hunter 36 14 5 137 Robinson Everett Kitty Hawk 36 12 4 138 Robinson Gordan Enterprise 37 14 5 139 Ross Gary Wanderer 35 11.8 5.8 140 Ross Richard Polaris 31.2 10.1 4 141 Taylor Mary Sadi and Eden 28 11 4 142 Todd Daniel 66.5 20.5 9 143 Todd Andrew Emma Ray 46 16 8 144 Todd Alex Jake and Josh 42 16 7 1

45 Todd Jacob/Joshua High Maintenance 1

46 Tozier Ron Keepah 21 9 3 147 Whetham Henri Sea Hag 37 12 6.5 1

1 CTC Passengers/Freight Islander 52 18.3 7 12 CTC Passengers/Freight Pied Piper 56 16 6.5 13 CTC Freight Barge 50 24 5 14 CTC Push Boat Dovekie 25.2 14 5 19 L.P.A. Peaks Island Lionel Plante 87 28 6 110 L.P.A. Peaks Island Ft. Gaines 150 48 6 111 Intercoastal Freight Barge 80 24 5 112 BBC Tozier Barge 40 14 4 115 Casco Bay Line Passengers/Freight Maquoit 100 8 116 Casco Bay Line Passengers/Freight Aucocisco 110 8 117 Portland Harbor Fuel Fuel Supply Judy Anne 2 36 12 5 1

6 Tozier Reid Blackswan 34 11 4 17 Hamilton Leon Greta and Sean 28 10 5.5 118 Water Taxi 30 12 4 1

5 Bohem Kim Electrical Contractor 28 11 3 1

8 Boat Yard Service boat 26 10 5.5 113 CMP Service High Voltage 42 14 5 114 Telephone Co. Service Light Waves 30 11 4 119 Ring Tom Altantic Seal 42 12 5 1

7 18 21 8 8 4Draft 3 4.5 5.5 6.5 7.5 9

Pi 3.14159265 Underkeel Required - Anchorage 1.5 1.5 1.5 2 2 2.5Tides9.0 Mean 10.4 Spring Anchorage Design Depth 4.5 6 7 8.5 9.5 11.5

Underkeel Required - Channel 2 2 2 2.5 2.5 2.5Channel Design Depth 5 6.5 7.5 9 10 11.5

Mid-Sized Fishing Boat Anchorage Design Vessel 44.5 15.4 6.6 17Small Fishing Boat Anchorage Design Vessel 40.1 13.9 5.0 17Large Fishing Boat Anchorage Design Vessel 43.6 14.8 6.7 14

TABLE 1GREAT CHEBEAGUE ISLAND, MAINE - NAVIGATION IMPROVEMENT PROJECT - FLEET STATISTICS

Town of Chebeague Island - Commercial Vessel List - Ron Tozier Harbor Master - October 2012 Vessel Draft Class Ranges

Commercial Fishing Boats

Commercial Ferries and Cargo Transports

Municipal Craft

Commercial - Utility Service and Other Non-Fishing Boats