GRAND JUNCTION, Colo. -- Some Colorado medical marijuana dispensary owners convicted of certain felonies in the past 5 years won't be able to operate their stores.

It's part of a new law going into affect on Monday. According to the DEA, we may be seeing quite a few closing up shop across the state.

"We were waiting for regulation anyway. So we knew something like this was going to happen," says Jeff Cassinari with Green Natural Solutions.

DEA's new report shows 18 percent of all dispensary owners may have to close their doors because they're convicted felons.

"It's [Colorado law] come along way. This is something that will be worked out. I just don't see this lasting for long. They just need to get a grip on it because it was out of control," says Cassinari.

If any of the felon charges turn out to be drug related, the DEA says owners could face a life time ban from running a pot shop.

"It is unfair. It's discrimination completely... I think it'd be naive to believe that someone who has an operating business, that has to close it, is just going to go away... I think it's probably going to create a different market. It won't be the black market because it's still a medical patient market," says Cassinari.

For some local shops the background checks for owners didn't come as a surprise but employee checks were another story. On Sunday, if you have a record, you may be out of a job because it'll be illegal to employ you.

"This case it's black in white. If it's on your record you can't have any connection [with the dispensary]," says Cassinari.

The no-felon regulations come from law maker's fear drug dealers and users were flocking to the industry. Still, for some, it's a little extreme.

"You know I'm sure there's quite a few people out that there that are going to lose their jobs because of maybe something stupid they did in high school or something. That seems a bit far but I guess the intentions [of law makers] are right," says Cassinari.

If you're a dispensary owner, the state application has to be turned into Colorado's Bureau of investigation by Sunday.

With it comes a long list of things owners have to complete. Just to name a few of them: they have to fill out a permit application, background investigation forms for themselves and all employees, plus send in a complete set of fingerprints for everyone working at the store.

To top it off, application fees start at 12 hundred dollars. Some say the biggest change is yet to come when dispensaries may be required to grow 70 percent of their product which goes into affect September 1st.