Koholalele Hamakua EA PBR Final TMK No. 4-2-005:001

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HAMAKUA LAND SALE: KOHOLALELE FINAL ENVIRONMENTAL ASSESSMENT characteristics, topography, and rainfall, the Site is suitable for agriculture, but not as suitable in the upper portion of the Site where the topography is steeper (where the ALISH designation is Unclassified, i.e., not Prime or Other). The Site is beyond the service area of the Hamakua Ditch, and alternative surface or groundwater sources for irrigation may not be feasible; hence, agricultural activity will need to depend on rainfall. Altering the land contours for agricultural or farm dwellings could affect the drainage onto the downstream owner, but this can be mitigated by developing conservation plans as required by the County's grading ordinance. Should the purchaser of the Site subdivide to the maximum permitted by the existing A -40a zoning, the maximum number of lots would be approximately 20 lots (assuming 20% of the land area would be used for road improvements or other purposes). The County would likely require improvements such as all- weather access roads (for emergency vehicles) and safe connection to Mamalahoa Highway as conditions of subdivision. The lack of existing capacity in the County's Pa`auilo water system would mean that the subdivision would be served by water catchments and limited to six lots under the Planning Department's water variance rules. The permitted farm dwellings would be allowed to install cesspools that meet the Department of Health's standards since the Site is located in a non- critical wastewater disposal area where any cesspool leachate would not impact the groundwater or nearshore coastal waters. The Site is not in any special natural hazard area. Determination: Finding of No Significant Impact (FONSI)