Name: Land Capability - Sinclair

Display Field: CAPABILITY

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Indicates land capability boundaries within the Lake Tahoe Basin. This version of the land capability data is a non-adopted Tom Sinclair version. This version includes edits from Tom Sinclair (mostly regarding the stream environment zones) to update and refine the Bailey Land Capability classification system. Land capability challenges can be conducted in accordance with 30.3.4. in the TRPA Code of Ordinances and other applicable regulations. </SPAN></P><P><SPAN>Land Capability Classes: 1A, 1B (Stream Environmental Zone - SEZ), 1C, and 2 = base allowable land coverage is 1% (only one percent of these lands can be developed based on land coverage regulations); 3 = 5%; 4 = 20%; 5 = 25%; 6 and 7 = 30%. 1A-C, 2, and 3 are environmentally sensitive lands and 4-7 are less environmentally sensitive lands.</SPAN></P><P><SPAN>The Threshold Standard (Dec. 2012 Threshold Evaluation Report, Soil Chapter) for impervious surface reads as follows: “</SPAN><SPAN>Impervious cover shall comply with the Land-Capability Classification of the Lake Tahoe Basin, California-Nevada, A Guide for Planning, Bailey, 1974</SPAN><SPAN>.” The adopted Impervious Cover Threshold Standard is guided by Robert Bailey’s land capability classification system for the Lake Tahoe Basin (Bailey 1974).</SPAN><SPAN /><SPAN>Bailey (1974) assigned units of land throughout the Basin to one of nine land capability classes (1a, 1b, 1c, 2, 3, 4, 5, 6, and 7), from most toleast environmentally sensitive, believing that in order to maintain "</SPAN><SPAN STYLE="font-style:italic;"><SPAN>environmental balance</SPAN></SPAN><SPAN>," each capability class has a capacity for development, which should not be exceeded. Factors for determining capability classes included tolerance for developed use, slope percent, relative erosion potential, runoff potential, and disturbance hazards (Bailey 1974). Each land capability class was assigned an allowable percentage of impervious cover, ranging from 1 percent for sensitive lands in classes 1a, 1b, 1c, and 2, to 30 percent for higher tolerance lands in classes 6 and 7. </SPAN></P><P><SPAN>TRPA Code of Ordinances, 2012, Chapter 90 (definitions): Sensitive Lands includes Land Capability Districts 1, 2, 3; and lands with the backshore (land area located between the highwater line of the lake and teh upland area of instability or the wave run-up area) and non-sensitive lands includes 4, 5, 6, or 7; and lands not within the back shore.</SPAN></P><P><SPAN /></P></DIV></DIV></DIV>

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