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DOE/EIS-0332; McNary-John Day Transmission Line Project Draft ...

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Figure 4, continued<br />

Bonneville Power Administration/<strong>McNary</strong> – <strong>John</strong> <strong>Day</strong> 500-kV <strong>Transmission</strong>-line <strong>Project</strong><br />

Tables: Electrical Effects<br />

d) Proposed line with parallel 230-kV, 345-kV, and 500-kV lines (Configuration 4, 125-ft.<br />

spacing)<br />

AUDIBLE NOISE, dBA<br />

e) Proposed line on existing towers with parallel 230-kV, 345-kV, and 500-kV lines<br />

(Configuration 4A)<br />

AUDIBLE NOISE, dBA<br />

65<br />

60<br />

55<br />

65<br />

60<br />

55<br />

SOUTH<br />

EDGE<br />

OF ROW<br />

SOUTH<br />

EDGE<br />

OF ROW<br />

Proposed BPA 500-kV line<br />

540 kV avg.<br />

Existing BPA 230-kV line<br />

237 kV avg.<br />

Existing BPA 230-kV line<br />

237 kV avg.<br />

50<br />

-100 -50 0 50 100 150 200 250 300 350 400 450 500 550 600<br />

DISTANCE FROM CENTERLINE OF PROPOSED LINE, feet<br />

Existing BPA 345-kV line<br />

355 kV avg.<br />

Existing BPA 345-kV line<br />

355 kV avg.<br />

Proposed BPA 500-kV line<br />

(on existing tower)<br />

540 kV avg.<br />

Existing BPA 500-kV line<br />

540 kV avg.<br />

50<br />

-400 -350 -300 -250 -200 -150 -100 -50 0 50 100 150 200 250 300 350<br />

DISTANCE FROM CENTERLINE OF PROPOSED LINE, feet<br />

Existing BPA 500-kV line<br />

(on new tower)<br />

540 kV avg.<br />

Proposed<br />

Existing<br />

NORTH<br />

EDGE OF ROW<br />

Proposed<br />

Existing<br />

NORTH<br />

EDGE<br />

OF ROW<br />

61

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