This polygon shapefile represents Westover Field Airport noise level data in Amador County for 1989. This file was obtained 3/2/2016 by UCSB Library staff. It was originally available via http://www.co.amador.ca.us/departments/information-technology/gis/gis-data.
The following metadata was provided by the data creators: NoiseLevels1989 contains Community Noise Equivalent Level (CNEL) noise exposure contours (at 60 and 65 decibels, dB) representing airport operating conditions for 1989 at Westover Field Airport, Amador County. Anticipated CNEL contours for the year 2010 are in the NoiseLevels2010 dataset. The contours were digitized by scanning the original hardcopy Figure 6.1 from the 1991 Westover Field Airport Master Plan (obtained from the Amador County Planning Department), georeferencing the resulting image to 2003 2-ft resolution County orthophotos and using it as a backdrop against which to hand-digitize the contours (this dataset) in ESRI ArcEditor 9.2.