All dealers in hay or feed who are permitted access to the stable area are required to provide at the time of delivery of any hay or feed to a consignee in the stable area a bill specifying the weight and cost of such feed or hay. Any hay dealer who delivers hay or feed which does not weigh at least the amount specified on the bills provided therefore shall be denied access to all stable areas of associations in this State.
Cal. Code Regs. Tit. 4, § 1862