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If at least two of the offenses were within the last 10 years, then he will be facing a required minimum of 10 days in jail with a maximum of one year. There is also a possible fine of up to $2500. In addition, his license will be suspended for an additional period equal to the term of the initial suspension (so if he was originally suspended for 1 year, then he will be suspended for an additional year).
Hope this clears things up.