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Coastal Subsidence Study 2005
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Coastal Subsidence Study 2005
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or where there is no vegetation in the immediate <br />vegetative growth, <br />vicinity, <br /> the upper limit of debris left by the wash of the waves. <br />This definition has been modified on June 3, 2006 to match that found in the <br />State Coastal Zone Management Act. Thus there is no longer a preference to use the <br />vegetation line in the State rules, and the debris line, and vegetation line are to be <br />given equal weight as evidence for the “upper reach of the wash of the waves.” The <br />definition in the Hawaii County Special Management Area Rules § 9.4 uses the same <br />exact definition as found in the Coastal Zone Management Act. <br />The concern for the former State regulatory definition had been that it placed a <br />preference on the vegetation line over the debris line, whereas the definition in the <br />Coastal Zone Management Act places equal emphasis on both. With the recent <br />modification of the State rules to match the statute, no preference is given to the <br />vegetation line or the debris line. <br />In recent conversations with the State DLNR, they indicate that no marker <br />(vegetation line or debris lines) will be used exclusively and all are potential <br />11 <br />indicators for the position of the shoreline. <br /> This is also in conformity with the <br />recent Supreme Court decision, Diamond and Bronstein v. State of Hawai’i, Board of <br />Land and Natural Resources and Carl Stephens. In this October 24, 2006 opinion, the <br />Court held that there is no per se rule giving primacy of the vegetation line over the <br />debris line in determining the “upper reach of the wash of the waves.” <br />From observations made during the field trips there are several issues with the <br />shoreline certification process, especially for the Kapoho area and in light of the <br />recent Supreme Court decision. These problem areas are discussed below. <br />The major problem with relying on the “upper reach of the wash of the <br />waves,” is that it can lead to highly variable, and difficult to document results within a <br />short distance. This can lead to determinations that do not make sense in the <br />administration of a coastal area. This is especially true for Kapoho. Some of these <br />abnormal results have been taken care of by statute or rule, but not all. Below are a <br />few examples of the abnormalities that can result from the current definition of the <br />shoreline, and the existing or proposed regulatory exclusions to address these <br />anomalies. <br />1)In recognizing that the upper reach of the wash of the waves may result in <br />wave inundation significantly inland from an existing house, the exclusion <br />was added to not consider storm or seismic waves (tsunamis). This would <br />prevent the result of a shoreline being placed thousands of feet inland from <br />existing houses. <br />11 <br /> Interview with OCCL – DLNR and UH Sea Grant extension agent Chris Conger on November 21, 2006. <br />29 <br /> <br />
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