Wenger 72944 Spezifikationen PDF herunterladen (Seite 215)

Section 5 Formulation of Alternative Plans

EAA Storage Reservoirs Revised Draft PIR and EIS February 2006

5-61

Seepage control is not required along the common Phase 1, Cell1 and STA

embankment section. Some measure of seepage control will be developed for

Holey Land for both systems. The Earthen Embankment cutoff has an

advantage with less quantities and depths.

Cost Variability issues include risk and uncertainty as are addressed within this

paper, but also consider a deviation in estimated probable cost by the COE and

SFWMD methods and quantities for both Earthen Embankment and RCC.

O&M Delta considers only additional slope areas to be maintained with Earthen

Embankment for erosion repair and mowing. Applying $1,500/Acre/Year, the 6-,

10-, 12- and 14-Foot has $8.9, $7.9, $7.7, and $7.8 million, respectively (present

worth).

Assuming a continued funding stream, both methods are considered nearly

equal. However, should the contract be terminated for convenience, the RCC

plant demobilization is considered an additional cost/risk. The additional

schedule for the acquisition of real estate for Alternative 2 is considered

elsewhere in the table.

Other construction process effects are measured under broader and related

categories. These other categories include: Environmental Quality – Air

Quality; Social Economic - 8A involvement; Regional Economic Development -

Employment (during construction) and Tax Revenues.

First, in terms of air quality, both systems have airborne particulates; however,

measures will be taken to minimize dust from excavation and embankment fill

and compaction operations by maintaining moisture levels in soils and along

haul routes. Also management from airborne particulates from batch plant

operations will be required. A slight advantage is given to the earth placement

process. Aesthetics is addressed under Environmental Quality and is not

addressed from Construction perspective.

Addressing Social Economic and Regional Economic Development, the 8A

contract provision will be met by both systems, and employment during

construction and tax revenues is also addressed within their respective category.

Additional information can be found in the Engineering Appendix (Appendix A).

5.4.5.9 Other Principals and Guidelines Criteria

Other Principal and Guidelines Criteria identified by Corps planning guidance

include Efficiency, Acceptability, Effectiveness and Completeness. Efficiency is

based on the cost per habitat unit of each alternative. Acceptability is the

likelihood that there will be acceptance of the project among all stakeholder

1 2 ... 210 211 212 213 214 215 216 217 218 219 220 ... 385 386

Keine Kommentare

Wenger 72944 Spezifikationen Seite 215