15.88.390   Improvement security required.
   A.   As a condition for the issuance of grading approval, the director may require the deposit of an improvement security in an amount deemed sufficient by him or her to assure faithful performance of the grading work in the event of default on the part of the applicant. Said security shall be in a form acceptable to the city.
   B.   In the case of subdivisions, the improvement security shall remain in effect until final inspections have been made and all grading work and subdivision improvements have been accepted by the city.
   C.   For projects other than subdivisions, the improvement security shall remain in effect until final inspections have been made and all grading work has been accepted by the director.
   D.   In addition to the improvement security, the director may also require the deposit of maintenance security in an amount deemed sufficient by him or her to guarantee and maintain the grading work performed, to assure the proper functioning of drainage systems and adequate erosion and sedimentation control. Said maintenance security shall be in a form acceptable to the city and shall remain in effect for a period of one year after the date of acceptance of the improvements or grading work, as designated in subsections B and C of this section, or such other periods of time as required by the director.
   E.   Any deposit required by the director pursuant to this title shall be payable to the city.
   F.   Upon failure to complete the work, failure to comply with all of the terms of the grading ordinance, or failure of the completed site to function properly to provide proper drainage or erosion and sedimentation control, the city may do the required work, or cause it to be done and collect from the applicant or surety all costs incurred thereto, including administrative and inspection costs. Any unused portion of a deposit shall be refunded to the applicant after deduction by the city of the cost of the work. (Prior code § 9.34.1810)