Laserfiche WebLink
<br /> <br />Monitoring site SW-S2-10 (Downstream) with the following <br />parameters clotted: <br />total dissolved solids increasing, high values <br />sulfate increasing, high values <br />sulfide high values <br />pH high values <br />Peabody uses the word exceedance in some of the tables <br />comparing surface water quality to stream standards. The <br />Division understands this word is used by Peabody in instances <br />where values for a particular sample at a sampling site <br />exceeds some receiving stream standard whether or not that <br />standard actually applies or whether or not stream mixing has <br />occurred. <br />** The Division understands that the Colorado Department of <br />Health has not designated any receiving stream standards for <br />Grassy Creek or Little Grassy Creek and that Peabody is using <br />the receiving stream standards for Fish Creek in the context <br />of the Grassy Creek Drainage merely as a point of reference in <br />discussing the results of Peabody's monitoring program for <br />that drainage. The Division also understands that Peabody's <br />use of the word "exceedance" for Grassy Creek and Little <br />Grassy Creek is also used in this context. The Division <br />further understands that Peabody samples parameters at NPDES <br />sites beyond what is required in the NPDES permit. <br />*** "Increasing" refers to parameters appearing to indicate <br />patterns of significant increase in value since 1981. <br />