Laserfiche WebLink
The Table 1 above from February 2, 2015 supersedes any previously submitted sampling <br />proposal for the NOI. All sample tests except for the Full suite surface water analyses will be <br />conducted on site and will be recorded in sheets which are attached. <br />Item 2- Plan to Ensure that Existing Water Emanating from the Mine is not Affected by <br />the NOI Activities of 2015. <br />2.1 Standard five quarters of sampling g ata... <br />Although the standard five quarters of sampling has not been conducted, compilation of past data <br />may provide a sufficient baseline standard to compare the mine discharge to. It is important to <br />note that because of the mine's location water sampling during quarters one and four is <br />extremely difficult. Thus, there is no historical data for those quarters. There is, however, data <br />from Q2 1993, Q2 1997, Q3 2004, Q2 2006, Q3 2006, and 2 samples from Q3 2014. Because the <br />sampling data was taken at different points in time by different parties under the various different <br />mine ownership entities, the parameters tested and exact sample locations slightly vary between <br />the tests. For example, some sampling periods tested "total recoverable" parameters instead of <br />"total ". Where applicable, these parameters will be averaged together to produce a representative <br />value. This methodology is sufficient because there is only a slight difference between these two <br />types of parameter tests. Similarly, not all samples were collected at the exact same longitude <br />and latitude location. However, the records of all sampling dates were found and analyzed to <br />determine that the water measured was the discharge from the Hock Hocking mine into <br />Mosquito Creek. Some sampling dates took this sample at a point described as an effluent weir <br />location, others characterized the point simply as the Hock Hocking discharge, and the most <br />recent samples were taken at the discharge point directly above Mosquito Creek. Nonetheless, <br />because this is the only data available at the mine a baseline standard must be developed from it. <br />It is recognized that the amount and cohesiveness of the data could be improved upon which is <br />why improved testing during the NOI activity has been suggested. <br />2.2 How results from water sampling be compared to past water quality data... <br />All past mine portal water discharge data will be averaged to determine a baseline level for the <br />same parameters found in the full suite analysis. This average is listed in the Table 2 below and <br />will form the basis to determine if the water is being affected by the NOI activity. <br />