(i) A qualified soil scientist or qualified registered professional geologist, a certified sewage enforcement officer or qualified registered professional engineer, not employed by the local agency with jurisdiction over the property in question, confirms in writing that the soil mottling observed in the test pits is not an indication of either a regional or perched seasonal high water table.

(ii) The property owner provides evidence of financial assurance to the local agency in an amount equal to the cost of replacement of the individual residential sewage system proposed and the reasonably anticipated cost of remedial measures to clean up contaminated groundwater, to replace any contaminated water supplies and to repair or replace a malfunction of the on-lot system. In no case shall the local agency approve financial assurance in an amount less than twenty thousand dollars ($20,000) or fifteen percent of the appraised value of the lot and proposed residential dwelling for each year up to three years. The local agency may require an additional two years' financial assurance. The local agency shall waive the financial assurance requirement after five years.

(iii) The property owner provides notification to the local agency seven working days prior to conducting soil evaluations under this section, and a representative of the local agency may observe the soil evaluations and may review resulting reports and correspondence.

(iv) The property owner produces evidence of a clause in the deed to the property that clearly indicates soil mottling is present on the property and that an individual residential on-lot sewage system meeting the requirements of this section was installed on the property.