35_20_23_DREDGING_Work_Covered_By_Contract_Price_and_Estimated_Quantities_REVa.pdf

FY18 CHARLESTON UPPER HARBOR W912HP-18-B-0001

MAINTENANCE DREDGING

SECTION 35 20 23 PAGE 1

1.4.2. Work Covered By Contract Price

ITEM 0001, MOBILIZATION AND DEMOBILIZATION (SHOALS 2 – 4 and 6 - 8), shall include all costs connected with the mobilization and demobilization of all the Contractor's dredging plant and equipment.

ITEMS 0002-0008, DREDGING WORK (SHOALS 2 – 4 and 6 - 8), shall include the cost of removal and disposal of all material and the layout and accomplishment of all work, as specified herein or indicated on the contract drawings. The movement of plant between shoals, as indicated on the contract drawings, shall be included in the unit price. The contract price per cubic yard for dredging shall be applicable to quantities in any extensions of the dredging limits except as provided in Paragraph “Variations In Estimated Quantity – Dredging”. Calculated volumes for cubic yardage will be determined according to Subsection SURVEY for payment purposes.

OPTIONAL ITEM 0009, DREDGING WORK (SHOAL 1 – Shipyard River), shall include the cost of removal and disposal of all material and the layout and accomplishment of all work, as specified herein or indicated on the contract drawings. The movement of plant between shoals, as indicated on the contract drawings, shall be included in the unit price. The contract price per cubic yard for dredging shall be applicable to quantities in any extensions of the dredging limits except as provided in Paragraph “Variations In Estimated Quantity – Dredging”. Calculated volumes for cubic yardage will be determined according to Subsection SURVEY for payment purposes.

OPTIONAL ITEM 0010, MOBILIZATION AND DEMOBILIZATION (TC DOCK), shall include all costs connected with the mobilization and demobilization of all the Contractor's dredging plant and equipment.

ITEM 0011, DREDGING WORK (TC DOCK), shall include the cost of removal and disposal of all material and the layout and accomplishment of all work, as specified herein or indicated on the contract drawings. The movement of plant between shoals, as indicated on the contract drawings, shall be included in the unit price. The contract price per cubic yard for dredging shall be applicable to quantities in any extensions of the dredging limits except as provided in Paragraph “Variations In Estimated Quantity – Dredging”.

Calculated volumes for cubic yardage will be determined according to Subsection SURVEY for payment purposes. Contractor shall also comply with any special conditions contained the permit to dredge TC Dock found in the ATTACHMENT Naval Weapons Station Dredging Permit.

OPTIONAL ITEM 0012, MOBILIZATION AND DEMOBILIZATION (MARAD PIERS S, T, U),

shall include all costs connected with the mobilization and demobilization of all the Contractor's dredging plant and equipment.

OPTIONAL ITEM 0013, DREDGING WORK (MARAD PIERS S, T, U), shall include the cost of removal and disposal of all material and the layout and accomplishment of all work, as specified herein or indicated on the contract drawings. The contract price per cubic yard for dredging shall be applicable to quantities in any extensions of the dredging limits except as provided in Paragraph “Variations In Estimated Quantity – Dredging”. Calculated volumes for cubic yardage will be determined according to Subsection SURVEY for payment purposes. Contractor shall also comply with any special conditions contained the permit to dredge MARAD Piers found in the ATTACHMENT CMMC Dredging Permit.

SECTION 35 20 23 PAGE 2

1.4.3. Estimated Quantities

The total estimated quantity of material necessary to be removed from within the specified limits to complete the work are as follows:

REQUIRED

DREDGING

PRISM

ALLOWABLE

OVERDEPTH

PRISM

TOTAL C.Y.

SHOAL

NO. LOCATION CY MEAS. * CY MEAS. ** PL.

1 Shipyard River 180,000 95,000 275,000

2+00 to 34+00

2 Daniel Island Reach 85,000 90,000 175,000

1348+00 to 1410+00

3 Daniel Island Bend 80,000 25,000 105,000

1420+00 to 1438+00

4 Navy Yard Reach (Right) 17,000 23,000 40,000

1538+00 to 1564+00

5 Navy Yard Reach (Left) 6,000 12,000 18,000

1538+00 to 1564+00

6 Port Terminal Reach 12,000 15,000 27,000

1658+00 to 1670+00

7 Ordnance Reach 140,000 70,000 210,000

1690+00 to 1720+83

8 Ordnance Reach TB 450,000 105,000 555,000

1698+64 to 1720+83

TC Dock

40,000 10,000 50,000

1703+90 to 1720+83

MARAD Pier S 65,000 9,000 74,000

Northern berth

MARAD Pier T 65,000 8,000 73,000

Northern Berth

MARAD Pier U 50,000 7,000 57,000

Northern Berth

TOTALS

1,184,000 457,000 1,641,000

SECTION 35 20 23 PAGE 3

NOTE:

* 1. Required depth will be as shown on the contract drawings. The required dredging prism quantities include the optional side slope material associated with the required depth.

** 2. The allowable overdepth quantities include optional side slope materials associated with the allowable overdepth.