Draft Environmental Impact Statement




НазваниеDraft Environmental Impact Statement
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Дата конвертации29.10.2012
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  • removing features of the dams necessary to restore fish passage and ensure public safety

  • dredging of some fine-grained reservoir sediments and transporting to the ocean by pipeline

  • restoration of historic anadromous fish runs

  • revegetation of the reservoir areas

  • monitoring of sediment transport and river channel topography, water quality, and aquatic ecology

  • short and long-term protection of municipal and industrial water supplies from adverse effects of dam removal

  • mitigation of flood impacts to Lower Elwha Klallam Reservation residents caused by long-term river aggradation

  • reservoir drawdown in controlled increments with periods of constant lake elevation in between

  • short-term protection of native fish stock


Table 9. Cost Estimates – River Erosion Alternative (Proposed Action)

ACTIVITY

REFERENCE YEAR (BUDGET YEAR)

(costs in thousands of dollars)










n-2

n-1

n

n+1

n+2

Balance to Complete







Total

(1)

(2)

(3)

(4)

(5)




Project Acquisition

























Direct Acquisition Costs




29,500

29,500
















Other Lands & Rights Costs




300

250

50
















Subtotal

29,800

29,750

50








































Engineering Design

























Preconstruction Data Collection




458

458
















Decommissioning of Projects




30

30
















Water Quality Protection




1,531

1,523













8

Flood Protection




368

295













73

Dam Removal




800

300

500













Haz Waste Cleanup




53

45




8










Transmission Line Removal




10









10







Road Rehabilitation




48










48







Hatchery Expansions




405




320

85












Subtotal

3,703

2,651

820

93

58




81

Direct Construction Costsa

























Decommission of Projects




300




300












Water Quality Protection




24,788

10,240

14,398










150

Salvage of Water Treatment Equipment




(225)
















(225)

Flood Protection




3,630




1,140

1,765







725

Dam Removal




20,200







9,200

10

1




Haz Waste Cleanup




534




200




334







Transmission Line Removal




650













650




Road Rehabilitation




480













480




Hatchery Expansions




4,040




3,180

860













Subtotal

54,397

10,240

19,218

11,825

10,334

2,130

650




























Construction Management




8,490

1,920

2,560

1,580

1,537

760

133

Waste Disposal Fees




1







500

500







Sediment Management/WQ Monitoring




1,894




100

610

460

320

404

Sediment Modeling




100

70

30













Cultural Resources




665



151

162

167

74

111

Fish Restoration




2,685

91

166

199

226

237

1,766

Revegetation/Wildlife




3,205




885

565

560

560

635

Marine Resources Monitoring




150

10

20

20







100

Construction Related O&M Costs

























Glines Canyon and Elwha Dams




1,100

500

500

100










Water Treatment Facilities




3,676







412

1,088

1,088

1,088

Dredge Hatchery




250










50

100

100




Subtotal

5,026

500

500

512

1,138

1,118

1,118




TOTAL

111,115

45,232

24,500

16,066

14,980

5,269

5,068
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