All commercial enterprises, including paving companies, general contractors, subcontractors and landscapers, submitting an application or performing work under the provisions of this chapter shall also provide or have on file with the city clerk a current bond in the minimum amount of ten thousand dollars ($10,000.00). The minimum amount of the bond required in this section may be adjusted by the city engineer, depending upon the size and nature of the project. (Ord. 878 § 8, 2004; Ord. 566 § 10, 1990)