Laserfiche WebLink
Dennis Jones <br />Seneca Coal Company <br />Page 2 <br />August 14, 2001 <br />standazds. Please note that Stream Segment 13d is a new stream segment description that has <br />recently been added to CDPHE Regulation No. 33. The Division recommends that for future <br />AHRs, surface water samples from the Yoast Mine site be compazed to the stream segment <br />standazds provided in CDPHE Regulation No. 33. <br />3. SCC provided a good discussion on groundwater quality trends and comparative analysis <br />with water quality standazds. On several occasions, samples from groundwater monitoring wells <br />exceeded the Basic Standards for Ground Water provided in CDPHE Regulation No. 41. <br />Specifically, SCC indicates that iron and manganese exceeded the applicable CDPHE standazd. <br />Please note that the Division has adopted changes to our surface and groundwater monitoring <br />Rules as of March 21, 2001 (refer to Rule 4.05.13). The rule changes incorporate compliance with <br />applicable groundwater standazds at established points of compliance. The Division is in the process <br />of implementing the point of compliance rules. Additional information regarding downgradient <br />groundwater quality and/or additional groundwater monitoring points may be required to establish <br />appropriate points of comp]iance. <br />If you have any questions concerning the Division's review of the 2000 AHR, please contact me. <br />Sincerely, <br />!'1 P.15~.~/ <br />Michael P. Boulay <br />Environmental Protection Specialist <br />Sandy Brown <br />