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United States Federal Highway Administration,, Hawaii Department of Transportation,, Char, Winona P., Palmer, Rexford, Paul, David. Draft environmental impact statement : Saddle Road (State Route 200) Mamalahoa Highway (State Route 190) to milepost 6, county of Hawaii, state of Hawaii, FHWA project no. A-AD-6(1). Technical appendices - volume I. 1997. Database: EIS. Roads environmental aspects, Saddle Road, Vegetation surveys, Silene Hawaiiensis, Akoko, Chamaesyce olowaluana, Highway planning Hawaii Island

United States. Federal Highway Administration. Central Federal Lands Highway Division,, Hawaii Department of Transportation,. Draft supplemental environmental impact statement: Saddle Road (State Route 200) Mamalahoa Highway (State Route 190) to Milepost 41. 2009. Database: EIS. Roads environmental aspects Hawaii Island, Highway planning Hawaii Island, Saddle Road, Environmental impact analysis

United States. Federal Highway Administration. Central Federal Lands Highway Division,, Hawaii Department of Transportation,. Final supplemental environmental impact statement: Saddle Road (State Route 200) Mamalahoa Highway (State Route 190) to Milepost 41. 2010. Database: EIS. Roads environmental aspects Hawaii Island, Highway planning Hawaii Island, Saddle Road, Environmental impact analysis, Pohakuloa Training Area (PTA)