3.7 hazardous materials and hazardous waste - Missile Defense ...

Chapter 3—Affected EnvironmentThe main highways in the vicinity of Remote Sprint Launch Site 1 areState Highway ND 1 and County Roads 3 and 32. Estimated traffic noiselevels for these segments of highway are shown in table 3.10-11.Table 3.10-11: Estimated Traffic Noise Levels for theRemote Sprint Launch Site 1 Area (1)Segment of HighwayAverageAnnualDaily TrafficCount (2)Distance at whichLeq(1 hour) = 72 dBAoccursin meters (feet)Distance at whichLeq(1 hour) = 67 dBAoccursin meters (feet)Distance at whichLeq(1 hour) = 57 dBAoccursin meters (feet)ND 1 in the vicinityof Remote SprintLaunch Site 1CR 3 in the vicinityof Remote SprintLaunch Site 1CR 32 in the vicinityof Remote SprintLaunch Site 1510 3 (10) 7 (23) 32 (105)280 2 (7) 4 (13) 17 (56)65 1 (3) 1 (3) 7 (23)(1)Based on the methodology of the U.S. Federal Highway Administration (1978) and assuming a traffic speedof 105 kilometers (65 miles) per hour for ND 1, a traffic speed of 89 kilometers (55 miles) per hour for CRs 3and 32.(2)North Dakota Department of Transportation, 1996—Traffic Volume Map, Ramsey County.Note: dBA = decibel A-weighted, Leq = equivalent sound levelThe closest noise sensitive receptor to the site is a residential unitapproximately 1.6 to 2.4 kilometers (1 to 1.5 miles) northeast of thesite.3.10.2.5 Remote Sprint Launch Site 2—NoiseThe area surrounding Remote Sprint Launch Site 2 is sparsely populated,and based on table 3.10-5, would be expected to have a backgroundnoise level of DNL less than or equal to 55 dBA.The main highways in the vicinity of Remote Sprint Launch Site 2 areState Highway ND 1 and County Road 55. Estimated traffic noise levelsfor these segments of highway are shown in table 3.10-12.The closest noise sensitive receptor to the site is a residential unitapproximately 1 kilometer (0.7 mile) east of the site.NMD Deployment Final EIS 3-307