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r p' <br /> O <br /> regulations relating to the utilization, construction or inspection of private roof or <br /> rain catchment water systems for potable or emergency uses. <br /> The alternative to a water system proposed by the applicant`�rivate residential <br /> catchment systemg'by the individual lot owner(s) would not meet the intent and <br /> purpose of the Subdivision Code; and is not allowed pursuant to Planning <br /> Department Rule 22-Water Variance, effective February 25, 2006. Generally, <br /> Rule 22 is both a rule and statement of criteria to be used so that consistent <br /> decisions can be made on water variance requests. <br /> Section 23-84 of the Subdivision Code requires a water system, and Rule 22 <br /> limits subdivisions requesting a variance from water supply to six (6) lots, and, <br /> requires that a proposed subdivision(limited to 6 lots)requesting a variance to <br /> allow individual rainwater catchment systems for potable and emergency needs <br /> must receive a minimum 60 inches of annual rainfall for each lot served by <br /> catchment. Rule 22, states in part: <br /> `22-4 Minimum rainfall. <br /> Except as provided in Rule 22-6, all lots to be served <br /> by catchment shall [] have an average annual rainfall <br /> of not less than 60'. The annual rainfall can be proven <br /> by rainfall records at comparable rain gauges, or by the USGS <br /> rainfall map. <br /> Rule 22 allows the rainfall to be proved by either the USGS rainfall map or by <br /> rain gauge data. The analysis of the information and comparison of maps <br /> attached to the variance application and other rainfall maps and rainfall data at the <br /> Planning Department, etc. indicate that the entire subject TMK property is below <br /> the 60'isohyet line and does not receive 60 inches of rainfall annually. The <br /> elevation of the property begins at above 1280 feet and ends about 1760 feet. <br /> Although the very top of the property is near the 60'isohyet line, most of the <br /> proposed lots are much lower. In view of the applicanfs submittals, e.g. <br /> Exhibit(s) and other historical data published by the Hawaii State Climate Office <br /> (HSCO), it appears that the proposed subdivision is near active rain-gauge station <br /> 'OPMHALE 2" This rain gauge is situated approximately 1.2 miles +/- south of <br /> the TMK property near the Mamalahoa Highway. According to a 1996 U.S. <br /> Geological Survey publication, Opihihale No. 2's elevation or altitude is 1270 feet. <br /> The rain gauge data indicates that the actual rainfall at the subdivision is well <br /> under 60" Historical rainfall data published by HSCO for OPIHIHALE 2 show <br /> the mean average rainfall measured for the years 1956-2000 is 41.20 inches. <br /> ii <br /> The annual rainfall at the property and the property's boundary on Mamalahoa <br /> Highway or South Kona Belt Road is probably about 4r, Therefore, the proposed <br /> 6-lot subdivision does not receive minimum 60'annual rainfall and the applicanfs <br /> request to allow individual rainwater catchment systems for potable and <br /> emergency is not allowed or eligible pursuant to Rule 22-Water Variance which <br /> requires the proposed subdivision to receive minirnuir,60'ar mal rainfall. <br /> i 3 <br />