On May 20^th personnel from the National Park Service and Alaska Department of Environmental Conservation staff, along with EPA met in McCarthy to investigate the two discharge sites in question, since road conditions improved enough to gain access.  Investigation of the first site where the skid tank overturned during the winter season shown that its location did not threatened any waters of the US; (Nizina River). It was initially speculated during the review of satellite imagery, that channeled terrain would have aided the fuel reaching the river.  Upon inspecting the site however, no channeled terrain was evident.  The fuel spread out during the melting of ice and snow and was absorbed by soil and thick herbaceous vegetation leaving an extremely low probability of reaching “Navigable waters”; especially given a relatively long distance to the river.

Upon inspection of the second site on the bank of the river, where leaking construction equipment was first observed by NPS officials, shown little evidence of discharge.  Given the time waiting for trail conditions to improve in order to gain access, it is believed that flooding during spring “break up” scoured the area removing any trace of contaminated shoreline.  No further action, with the exception of monitoring the activities of the placer miner, is expected.