No, you cannot get it dropped but you may be able to get the severity of the charge reduced. There needs to be an official measurement so the "1000 feet " issue, in due time, will be a black and white issue. If the measurement is less than 1000 feet then, the sale, nonetheless , is still an alleged violation of the law but with less serious repercussions. If the measurement is, in fact, less than a 1000 feet, that miscalculation will add legal persuasive leverage to your finance since that affects the police's credibility.