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A-23 <br /> TABLE 11 <br /> CDOH Yampa Segment 13d (Dry Creek) and 13e (Sage Creek) Standards <br /> FIELD PH 6.5 - 9.0 <br /> AMMONIA, NITROGEN, MG/L 0.13A <br /> ARSENIC, TOTAL REC., UG/L 100.0 <br /> BORON, DISSOLVED, UG/L 750.0 <br /> CADMIUM, UG/L 9.1 (acute) <br /> CADMIUM, UG/L 1.2 (chronic) <br /> CHROMIUM, UG/L 1773 (acute) <br /> CHROMIUM, UG/L 231 (chronic) <br /> COPPER, UG/L 50.0 (acute) <br /> COPPER, UG/L 29.0 (chronic) <br /> IRON, TOTAL REC., MG/L 1.0 <br /> LEAD, UG/L 281.0 (acute) <br /> LEAD, UG/L 11.0 (chronic) <br /> MANGANESE, MG/L 4.738 (acute) <br /> MANGANESE, MG/L 2.618 (chronic) <br /> MERCURY, TOTAL, UG/L 0.28 <br /> NICKEL, UG/L 1513.0 (acute) <br /> NICKEL, UG/L 168.0 (chronic) <br /> NITRITE, NITROGEN, MG/L 0.05 <br /> SELENIUM, UG/L 18.4 (13e only, acute) <br /> SELENIUM, UG/L 4.6 (13e only, chronic) <br /> SELENIUM, UG/L 60.0 (13d only, acute/chronic) <br /> SULFIDE, MG/L 0.02c <br /> SILVER, UG/L 22.0 (acute) <br /> SILVER, UG/L 3.5 (chronic) <br /> ZINC, MG/L 0.464 (acute) <br /> ZINC, MG/L 0.405 (chronic) <br />Acute = one day max., Chronic = 30 day average. These values were <br />taken from Table IV, CDOH Reg. 31, using a mean hardness of 400 mg/1. <br />All acute/chronic values are the 'dissolved' form. <br />A = Standard is 0.06 mg/1 (un-ionized). Detection limit is 0.05 mg/1. <br />Screening value = 0.13 mg/1 = .06 mg/1 + 45~ (max ionization at pH 9, <br />30° C) <br />B = Standard is 0.01 ug/1. Detection limit is 0.2 ug/1. <br />C = Standard is 0.002 mg/1 (un-ionized). Detection limit is 0.02 mg/1. <br />