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• <br />OUTLINE (con't) <br /> <br />1. Risk to human health or environment due to toxic or acid-forming chemicals <br />To have risk, must have: <br />a) Source of toxic chemical <br />b) Transport mechanism to exposure point <br />c) Uptake to exposed receptor <br />Qualitative risk assessment would demonstrate no significant incremental increase in risk <br />due to toxic metals or acid found in the waste rock. <br />Offsite transport <br />• comply with NPDES stormwater intent and ongoing reclamation activities <br />to prevent runoff <br />-- 6 miles to nearest perennial streamflow. Permit lists soil type in mine <br />azea as "soil 60" - a type used extensively for "prospecting and mining of <br />uranium and vanadium"; mapped (in Exhibit I-2) <br />- Onsite vs. Offsite <br />• sandstones onsite contain no more toxic metals or acid tha~1 sandstone <br />outcrops throughout the area <br />• although regulations do not include radioactivity in definition of toxic, <br />elevated radioactivity levels are ubiquitous to the area <br />• measurements of radiation levels on outcrop were 2-3 times hil;her than at <br />West Sunday Dump <br />• There are "dozens" of similaz places which would have simil;rr levels of <br />radioactivity (i.e., much higher than at West Sunday Dump) <br />Page 2 <br />