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<br /> <br />Table 6 (cont.): Standards applicable to desiQnated uses, New Mexico <br /> <br />K, Livestock and Wildlife Waterinli: The following numeric standards shall <br />not be exceeded: <br /> <br />Dissolved aluminum <br />Dissolved arsenic <br />Dissolved boron <br />Dissolved cadmium <br />Dissolved chromium6 <br />Dissolved cobalt <br />Dissolved copper <br />Dissolved lead <br />Total mercury <br />Dissolved selenium <br />Dissolved vanadium <br />Dissolved zinc <br />Radium-226 + radium-228 <br /> <br />5.0 <br />0.02 <br />5.0 <br />0,05 <br />1.0 <br />1.0 <br />0.5 <br />0,1 <br />0.01 <br />0.05 <br />0.1 <br />25.0 <br />30.0 <br /> <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />mg/l <br />pCi/1 <br /> <br />1 For waters with more than a single attainable or designated use the applicable criteria <br />are those which will protect and sustain the most sensitive use. <br /> <br />2As the need arises, the State shall determine for specified stream segments or <br />relevant portions thereof whether the limiting nutrient for the growth of aquatic plants <br />is nitrogen or phosphorus. Upon such a determination the waters in question shall be <br />exempt from the standard for the nutrient found to be not limiting. Until such a <br />determination is made, standards for both nutrients shall apply. If co-limitation is <br />found, the waters in question shall be exempt from the total inorganic nitrogen <br />standard. The State shall make available a list of those waters for which the limiting <br />nutrient has been determined. <br /> <br />3The chronic criteria shall be applied to the arithmetic mean of four samples collected <br />on each of four consecutive days. Chronic criteria shall not be exceeded more than <br />once every three years. <br /> <br />4The acute criteria shall be applied to any single grab sample. Acute criteria shall not <br />be exceeded. <br /> <br />5For numer.ic standards dependent on hardness, hardness (as mg CaC03/1) shall be <br />determined as needed from available verifiable data sources including, but not limited <br />to, the U.S. Environmental Protection Agency's STORET water quality database. <br /> <br />6The criteria for chromium shall be applied to an analysis which measures both the <br />trivalent and hexavalent ions. <br /> <br />Modified from New Mexico Water Quality Control Commission 1991 <br /> <br />30 <br />