Attachment_3_-_35_20_23_Estimated_Quantities_REVa.pdf

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FY19 CHARLESTON LOWER HARBOR MAINTENANCE DREDGING Federal contract opportunity
Solicitation number
W912HP-19-B-0001
Issued by
Department of the Army Corps of Engineers Engineering District Charleston

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FY19 CHARLESTON LOWER HARBOR W912HP-19-B-0001

MAINTENANCE DREDGING

SECTION 35 20 23 PAGE 1

1.4.3. Estimated Quantities_REVa

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

REQUIRED ALLOWABLE

SHOAL DREDGING PRISM OVERDEPTH PRISM TOTAL C.Y.

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

2 Lower Town Creek Reach 240,000 100,000 340,000 41+69 to 73+45

2A OPTION 160,000 100,000 260,000

Custom House Reach 50+00 to 63+90

3 OPTION 90,000 95,000 185,000

Tidewater Reach 22+00 to 41+69

3A OPTION 35,000 40,000 75,000

Tidewater Reach 10+00 to 22+00

4 OPTION 18,000 28,000 46,000

Town Creek Reach 73+45 to 87+95

4A OPTION 75,000 30,000 105,000

Town Creek Turning Basin 73+62 to 87+82

5 Myers Bend 13,000 21,000 34,000 1315+00 to 1332+00

5A OPTION 2,500 6,000 8,500

Myers Bend 1313+33 to 1319+00

6 Drum Island Reach 60,000 35,000 95,000 1281+00 to 1296+00

10 Daniel Island Reach 110,000 100,000 210,000 1348+00 to 1400+00

OPTION 140,000 280,000 420,000

Anchorage Basin 1032+00 to 1077+68

TOTALS 943,500 835,000 1,778,500

FY19 CHARLESTON LOWER HARBOR W912HP-19-B-0001

MAINTENANCE DREDGING

SECTION 35 20 23 PAGE 2

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 two (2’) allowable overdepth quantities include optional side slope materials associated with the allowable overdepth.

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