Every egg handler or dealer who pays assessments required under the provisions of this chapter on a monthly basis in lieu of seals shall be subject to audit by the director at such frequency as is deemed necessary by the director. The cost to the director for performing such audit shall be chargeable to and payable by the egg handler or dealer subject to audit. Failure to pay assessments when due or refusal to pay for audit costs may be cause for a summary suspension of an egg handler's or dealer's license and a charge of one percent per month, or fraction thereof shall be added to the sum due the director, for each remittance not received by the director when due. The conditions and charges applicable to egg handlers and dealers set forth herein shall also be applicable to payments due the director for facsimiles of seals placed on egg containers.