In addition to any fine or penalty imposed, whenever a solid waste facility operator causes any violation of this Chapter, said operator shall be liable to the City for reasonable costs necessary to correct that violation, including, but not limited to labor, material, inspection, transportation, overhead and incidental expenses associated with the corrective action. If the costs are not paid within 30 days of the invoice date, an additional charge equal to 25% of the required reimbursement shall be added to the reimbursement.