PD Background Report Waikoloa Village Center (PL-REZ-2023-052)

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Waikoloa Light Industrial Center Change of Zoning Background & County Environmental Report The Applicant will work with HELCO to upgrade systems to provide adequate capacity to Project. Waikoloa Village Center LLC will be responsible for the installation of all conduits, manholes, and trenching for any new HELCO utilities. • Telecommunications: Spectrum and Hawaiian Telcom provide tele- communication infrastructure along Waikoloa Road. New Spectrum and Hawaiian Telcom underground conduits and handholes will be installed alongside HELCO's infrastructure, connecting into existing infrastructure along Waikoloa Road. Conduit stub outs will be provided to the Project site. • Drainage: The increase of onsite runoff will be mitigated by constructing onsite drywells. To contain the increase of onsite runoff, the Project site will be graded to provide a positive flow toward the onsite drainage structures. Other related information: While the Flood Insurance Rate Map (FIRM) shows that the Project site is within Zone X (outside 0.2% -annual -chance floodplain), `Auwaiakekua Gulch, which is the mauka boundary of the Project site, is known to overflow during extreme storm events. To address potential impacts from flooding, the Applicant commissioned River Focus to analyze existing conditions and propose improvements to minimize future flooding and improve public safety. Exhibit 9 includes the diagrams from River Focus analyzing existing and proposed conditions. The Project site is within the Former Waikoloa Maneuver Area which is a Formerly Used Defense Site (FUDS). The U.S. Army Corps of Engineers' 2013 Former Waikoloa Maneuver Area map shows the Project site as Cleared Area. A portion of the northwestern section of the Project site is designated as an Exception Area. Exhibit 10 is the portion of the 2013 Former Waikoloa Maneuver Area map showing the Project site. 7