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32 <br />EXHIBIT R -2A <br />GROUNDWATER IMPACT RATING <br />potential for groundwater contamination can be evaluated <br />The p e o� soil beneath the site and the depth <br />based on the typ permeability of the <br />to groundwater. The lower the p <br />soils or the bedrock, the lower the possibility of contamination <br />and therefore, the lower the impact ratitgal tosimpact gheater the I <br />depth to groundwater, the lower the poten <br />groundwater. <br />SAND, LOAMY SILT, SILT CLAY, SANDY <br />SOIL LOAM, CLAY CLAY, SILTY <br />C:A.RACTERISTICS LOAM SANDY LOAM, LOAM CLAY <br />ROCK HIGHLY FRACTURED SLIGHTLY UNFRACTURED AND OTTER <br />CHARACTERISTICS ROCK, FAULT ZONES FRACTUREDTROCK IMPERVIOUS <br />ROCK <br />IMPACT RATING, B <br />DEPTH TO <br />OUNDWATER (FEET) <br />3 <br />1 <br />>30 2 1 <br />20 -30 4 3 2 <br />10 -20 5 4 3 <br /><10 <br />5 -22 -91 <br />