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Finding: Changes or alterations have been required in, or incorporated into, the project which avoid or substantially lessen the significant environmental effect as identified in the FEIR. These mitigation measures are listed below. Statement of Fact: This impact will be reduced by the following: County ordinance requires that septic suitability studies be done prior to recordation of the final map. Prior to final map approval a soil suitability study shall be done for each on-site sewer disposal site. These studies shall include soil profiles, percolation testing and winter/wet weather groundwater observations to verify conformance with County standards. C-2 Potentially Significant Impact: Development of the septic system easement plan could be done on a piecemeal and uncoordinated basis by individual property owners resulting in the increased possibility for crossing utility lines pipeline rupture and sewage spills. As noted above in Impact Number C-1, septic leach fields are proposed to be located in common open space areas. Because the lots will be sold to individuals for custom home construction, there is the potential for the above noted impact to occur as individuals seek to obtain their septic system permits. Finding: Changes or alterations have been required in, or incorporated into, the project which avoid or substantially lessen the significant environmental effect as identified in the FEIR. These mitigation measures are listed below. Statement of Fact: This impact will be reduced by the following: Based on the results of the required septic suitability studies, the recommended disposal sites for each building site shall be shown, whether it be on-lot or within a dedicated easement in the common open space, prior to final map approval. Prepare and record all sewage disposal easements, including easements for pipeline and disposal areas, prior to final map approval. C-3 Potentially Significant Impact: Potential for premature septic system failure given the remote location of the leachfields with respect to the building sites. Because of the remote location of the leachfields, there is the potential that normal inspection and maintenance may be ignored. Finding: Changes or alterations have been required in, or incorporated into, the project which avoid or substantially lessen the significant environmental effect as identified in the FEIR. These mitigation measures are listed below. Statement of fact: This impact will be reduced by the following: The Homeowners' Association CC&Rs should include provisions for inspection, maintenance and repair of all pipelines, leachfields, and related septic system features located in easement areas of the project. —4—