The NCM Motorsports Park wants to respect our neighbors and protect their ability to enjoy their property. The Clark Circle neighborhood contains many sound sources both natural (birds, dogs, wind blowing through trees) and man-made (I-65, Beech Bend Raceway, aircraft overflights, lawnmowers, HVAC systems) that collectively contribute to the community sound levels. The relative effect of those sound sources on community sound levels is often a function of atmospheric conditions like wind speed and direction, temperature, relative humidity and the presence of temperature inversions.
We aim to reduce our effect on the surrounding sound environment by pursuing the following mutually agreed upon limits:
- With the exception of special manufacturers vehicle testing, track participant vehicles are limited to 103 dBA measured 50 feet from the edge of the track. This sound limit is strictly enforced. Any vehicles exceeding this sound limit will be ordered to leave the track until appropriate corrective measures are taken to bring the vehicle into compliance.
- Track event based sound levels in the community are limited to a one hour equivalent sound level of 55.5 dBA measured at the top of every hour at a semi-permanent location in the Clark Circle neighborhood.
We have also been allowed eight (8) “exception days” during which track based sound levels at the community monitoring location will be limited to a one hour equivalent sounds level of 59.0 dBA.
Current planned exception days are: TBD for 2019
Our sound monitoring station captures and records data digitally and stores it at a data center. These files are provided to the City-County Planning Commission upon request.
Should you have an issue with sound levels from the track, you can register a complaint with the City-County Planning Commission at 270-842-1953.