11-09-2021 Agency Comments from Various DLNR Divisions

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Mr. Russell Tsuji Page 2 November 3, 2021 http://www.hawaiiscape.con-/wp-content/uploads/2013/04/LICH_Irrigation_Conservation_BMPs.pdf. X❑ 9. There may be the potential for ground or surface water degradation/contamination and recommend that approvals for this project be conditioned upon a review by the State Department of Health and the developer's acceptance of any resulting requirements related to water quality. ❑ 10 The proposed water supply source for the project is located in a designated water management area, and a Water Use Permit is required prior to use of water. The Water Use Permit may be conditioned on the requirement to use dual line water supply systems for new industrial and commercial developments. —1 11 The Hawaii Water Plan is directed toward the achievement of the utilization of reclaimed water for uses other than drinking and for potable water needs in one hundred per cent of State and County facilities by December 31, 2045 (§174C-31(g)(6), Hawaii Revised Statutes). We strongly recommend that this project consider using reclaimed water for its non-potable water needs, such as irrigation. Reclaimed water may include, but is not limited to, recycled wastewater, gray water, and captured rainwater/stormwater. Please contact the Hawai'i Department of Health,Wastewater Branch, for more information on their reuse guidelines and the availability of reclaimed water in the project area. RI 12 A Well Construction Permit(s)is (are)are required before the commencement of any well construction work. X❑ 13 A Pump Installation Permit(s) is (are) required before ground water is developed as a source of supply for the project. X❑ 14 There is (are)well(s) located on or adjacent to this project. If wells are not planned to be used and will be affected by any new construction, they must be properly abandoned and sealed. A permit for well abandonment must be obtained. ❑ 15 Ground-water withdrawals from this project may affect streamflows,which may require an instream flow standard amendment. ❑ 16 A Stream Channel Alteration Permit(s) is (are) required before any alteration can be made to the bed and/or banks of a steam channel. 17 A Stream Diversion Works Permit(s) is (are) required before any stream diversion works is constructed or altered. ❑ 18 A Petition to Amend the Interim Instream Flow Standard is required for any new or expanded diversion(s) of surface water. ❑ 19 The planned source of water for this project has not been identified in this report. Therefore,we cannot determine what permits or petitions are required from our office, or whether there are potential impacts to water resources. X❑ OTHER: Planning- As noted above, the Commission supports the use of alternative resources wherever practicable to conserve natural supplies. It is the policy of the Water Commission to promote the viable and appropriate reuse of reclaimed water insofar as it does not compromise beneficial uses of existing water resources. Kumu Hou is expected to generate an additional 0.38 mgd of wastewater that will be treated to R-1 levels and used for irrigation. A new brackish irrigation system will provide 0.31 mgd of non-potable water for Kumu Hou irrigation demands. It seems that the increased R-1 production could supply the new Kumu Hou irrigation demand. GW-The proposed brackish well source for proposed new brackish water irrigation (0.31 mgd) may have impacts to T&C practices in the area. Impacts to ground water dependent ecosystems is becoming an emerging issue as impacts to these are related to impacts to traditional &customary practices of sustenance from these ecosystems. We recommend consultation with the region's (moku)Aha Moku Council on whether this project will impact any traditional &customary practices. If you have any questions, please contact Neal Fujii of the Planning Branch at 587-0216 or Ryan Imata of the Regulation Branch at 587-0225.