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<br />ATTACHMENT B <br /> <br />dBVld br~ b n.oc'Bt.....'ncarpar""..d <br /> <br />1313 5th street s.e. · suite 322 · minneepolis. mn 55414 <br />telephone: 812-331-4571 · fex: 812-331-4572 <br /> <br />2 May 1996 <br /> <br />MEMORANDUM <br /> <br />TO: Roseville/SuperAmerica File <br /> <br />FROM: Dave Braslau <br /> <br />RE: Sound Level Measurements - 2 May 1996 <br /> <br />Measurements were made of car wash operations at the SuperAmerica station located on County <br />Road D and Highwy 8 in Roseville. Present during the measurements were the manager (Scott) <br />and Mike Cronin representing SuperAmerica. Second by second spectral readings were taken <br />with a CEL 593 sound level meter to permit clear identification of the source which had to be <br />isolated from passing traffic and other noise sources. Weather conditions at 12:00 following the <br />measurements were: <br /> <br />Sky <br />Temperature <br />Dew Point <br />ReI Humidity <br />Wind <br />Pressure <br /> <br />Cloudy <br />570 <br />220 <br />25% <br />N 3 mph <br />29.93 steady <br /> <br />The following readings were taken (doors were closed for all car wash operations): <br /> <br /> So <br />Reading Source (typical level) Location (dBA) <br />001 Dryer cycle 20 feet north 71 <br />002 Car departing ("slap") 20 feet north 79 <br />003 Wash cycle 20 feet north 58 <br />004 Dryer cycle 20 feet north 69 <br />005 Car departing ("slap") 20 feet north 75 <br />006 Dryer cycle 40 feet north 62 <br />007 Dryer cycle 80 feet north 59 <br />008 Car departing ("slap") 40 feet north 72 <br />009 Dryer cycle 20 feet west 61 <br />010 Vacuum 20 feet north 71 <br />011 Vacuum 40 feet north 67 <br />012 Background 40 feet north of vacuum 55 <br />013 Dryer cycle 15 feet south 72 <br />014 Compressors 50 feet west 64 <br /> <br />sameas.mem 96015 <br />