Congressional Serial Set

Cultural Resources

The costs for cultural resources studies associated with the Selected Plan are estimated to be $1,375,000, as shown in Table 48.

2.a.

Mapping, removal, and disposition of CSS GEORGIA ordnance

$200,000

1.a.

1.b.

1.c.

Estimate for diver evaluation is based upon a projection of 20 targets at $10,000 per target.

Shoreline testing is based upon a projection of 6 resources at $25,000

per resource.

The old Fig Island channel 40-foot wide sloughing impact area, Station 62+650 to 63+500 (mile 11.9-12.0), is projected to contain 4 wrecks. The cost for testing and data recovery is $80,000 per wreck.

1.d. & 2.d. This estimate is based upon 2 person-years of effort at a GS-11, step 7, level. This includes contract scoping, negotiation and award, contract monitoring, and coordination with the Georgia and South Carolina State Historic Preservation Officers and the Advisory Council on Historic Preservation.

2.a.

The CSS GEORGIA estimate is based upon a projected recovery of 1,000 pieces of ordnance. This includes archaeological mapping, removal, temporary storage, and inerting and preservation of a representative sample. The remainder of the ordnance will be buried, live or inerted, or will be destroyed.

2.c. This estimate is based upon data recovery of two resources at $100,000 per resource.

Selected Plan Cost Summary

Table 49 present a summary of the estimated costs of the Selected Plan, which provides for deepening the harbor channel to 42 feet, the jetties channel to 42 feet, and the bar channel to 44 feet. It also includes deepening Kings Island Turning Basin and the Garden City and Ocean Terminals to 42 feet.

FIRST COST

The estimated costs for Plan 1-40 and Plan 1-42 are shown in Tables 50 and 51. All costs, including engineering, design, supervision, and administration are based on actual experience for similar work in Savannah Harbor. Cost information is presented in the Microcomputer Aided Cost Estimate System (MCACES) format.

Based on present day construction prices, the first cost for the Selected Plan is $38,539,000. The first cost for the NED Plan, Plan 1-40, which must be used for the development of cost sharing, is $16,471,000.

ANNUAL COSTS

The estimated total investment first cost of $38,539,000, plus interest during construction, is equal to an average annual cost of $3,496,100, using interest and amortization over a 50-year project life at 8-1/2 percent.

BENEFIT/COST ANALYSIS

Table 52 presents the project first costs, annual costs, annual benefits, and benefit/cost ratio for the NED Plan (Plan 1-40) and the Selected Plan (Plan 1-42).