Here's a look at the chemical composition of the human body, including element abundance and how each element is used. Elements are listed in order of decreasing abundance, with the most common element (by mass) listed first. Approximately 96% of body weight consists of only four elements: oxygen, carbon, hydrogen, and nitrogen.
CORI (Criminal Offender Records Information) Background Checks. Felony convictions are included in CORI reports only for ten years after final disposition (including termination of any period of incarceration). Misdemeanor convictions will be reported only for five years after final disposition (again, including termination of any period of incarceration). If an offender has at least one conviction that is still timely for reporting purposes, however, then all prior convictions (no matter how old) will also be reported.
Depending on your business and the context in which the customer signed the release, that point in time could be very clear or not so much. To get a more definitive answer, you should consult a lawyer, giving him or her the facts surrounding the nature of your business, the language of the release, and so on. You might want to keep the release longer - say six years. If you business extends beyond CO, the laws of other states could be applicable and in that case, you also should consult a lawyer. This response contains general information only and is not legal advice on which you may rely.