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A-II <br />C <br />• <br />TABLE 5 <br />CDOH Ground Water Agricultural Use Standards <br />Aluminum, mg/1 A 5.0 <br />Arsenic, ug/1 100.0 <br />Boron, ug/1 s 750.0 <br />Cadmium, ug/1 10.0 <br />Chromium, ug/1 100.0 <br />Copper, ug/1 200.0 <br />Fluoride, mg/1 2.0 <br />Iron, mg/1 5.0 <br />Lead, ug/1 x 100.0 <br />Manganese, mg/1 0.2 <br />Mercury, ug/1 A 10.0 <br />Nickel, ug/1 200.0 <br />Nitrate/Nitrite as N, mg/1 a 100.0 <br />Nitrite as N, mg/1 x 10.0 <br />pH (S.U.) 6.5-8.5 <br />Selenium, ug/1 20.0 <br />Zinc, mg/1 2.0 <br />A CDOH livestock standard, without this footnote indicates a CDOH <br />irrigation standard. Irrigation standard for lead is 5000 ug/1. <br />B CDOH standard is set to protect plant sensitive species. Standard <br />for most species found in Routt County is 5000 ug/1. <br />• <br />