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Vantage to Pomona Heights Chapter 2 <br />230 kV Transmission Line Project FEIS Proposed Action and Alternatives <br /> PAGE 2-84 <br />Cost estimates were also developed for all Action Alternatives. The cost for underground segments <br />assumes 10 to 15 times cost of overhead ($427,634 per mile for overhead; 10.9 miles – Route Segments <br />NNR-4u & NNR-6u). The estimated construction cost for each Action Alternative is as follows: <br />• NNR Alternative – Overhead Design Option (FEIS Agency Preferred Alternative) - $17.3 <br />million <br />• NNR Alternative – Underground Design Option - $59.2 to 82.5 million <br />• NNR Alternative – MR Subroute - $19.8 million <br />• Alternative A - $28.6 million <br />• Alternative B - $30.8 million <br />• Alternative C – $31.0 million <br />• Alternative D – $28.9 million <br />• Alternative E – $30.9 million <br />• Alternative F – $28.6 million <br />• Alternative G – $31.3 million <br />• Alternative H – $28.9 million