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A-20 <br />TABLE 9 <br />CDOH Surface Water Agricultural Use Standards <br />Arsenic, ug/1 " 100.0 <br />Boron, ug/1 a 750.0 <br />Cadmium, ug/1 a 10.0 <br />Chromium, ug/1 '' 100.0 <br />Copper, ug/1 A 200.0 <br />Lead, ug/1 ~ 100.0 <br />Manganese, mg/1 " 0.2 <br />Nickel, ug/1 A 200.0 <br />Nitrate, Nitrogen, mg/1 ~ 100.0 <br />Nitrite, Nitrogen, mg/1 ~ 10.0 <br />Selenium, ug/l A 20.0 <br />Zinc, mg/1" 2.0 <br />A CDOH surface water agricultural standard. Same as the CDOH <br />groundwater irrigation standard. <br />B CDOH surface water standard is set to protect sensitive plant <br />species. Standard for plant species grown in Routt County is 5000 ug/1. <br />C CDOH surface water agricultural standard. Same as the CDOH <br />groundwater livestock standard. <br />• <br />• <br />• <br />