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STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Department of Natural Resources <br />1313 Sherman SL, Room 215 <br />Deneer. CuWrado 80203 <br />Phone: 1303) 866-3567 <br />FAY: (307) R32 8106 <br />INTERNAL MEMORANDUM <br />T0: Mike Boulay <br />From: Sandy Browr~ <br />Re: Seneca II-W, Annual Hydrological Report <br />Date: March 23, 1999 <br />DIVISION OF <br />MINERALS <br />GEOLOGY <br />0.EC LAM ATION <br />MI NIN G•SAFETY <br />Bill Owens <br />Gwernnr <br />Greh L lVal~her <br />E*euihve Dneclor <br />Michael 8. Lonp <br />Drcision Direan. <br />I reviewed Seneca II-W's AHR for compliance with their approved monitoring <br />plan. They have conducted all monitoring as required. I used the approved plan <br />in the permit dated November 5, 1993. As you know, the sites have been <br />relabeled which made the comparison a little time consuming! Tables at the <br />beginning of each section in the AHR provide a list of the well number (old site} <br />with the computer id. <br />SCC has included extra sites in their AHR. Ground water sites not in the permit <br />with data in the AHR were: GW-S2W-23A (WSAL14), GW-52W-40V1 ((WOV4- <br />1), GW-52W-40V2 (WOV4-2) and GW-2W-4W (WW4). Surface water sites <br />included in the AHR but not in the approved monitoring plan were: SW-52W- <br />SG9 (WSH9), SW-52W-SG17 (WSH17), SW-52W-SG16 (WSH16), SW-52W-FG5 <br />(WSDS) and SW-S2W-CG1 (WSSC1). Several springs were also added: 5-46 <br />(WSPG46), 5-47 (WSPG47), 5-48 (WSPG48), 5-49 (WSPG49) and Spoil Spring 1 <br />(WSSPGI). <br />There is a statement on page 15 of the AHR, that is somewhat misleading. It <br />says that, "Only water from Surface water site WSHFl (lower Hubberson Gulch) <br />has the potential of being used for irrigation; although this has not been <br />developed as such." As we have discussed, water from above this station is <br />used for irrigation purposes. Therefore, I think we need to evaluate the data <br />from that site taking irrigation into consideration. The data is presented in <br />Appendix E for site WSH7. In June and July the conductivity was 1010 and 1070 <br />umhos/cm respectively. <br />I am attaching the Hydrologic Monitoring Map from the permit application for <br />your assistance and also a summary of the PHC's from the permit application. <br />Let me know if you need anything else. Thank-you for your assistance. <br />Attachments <br />cc. Larry Routten <br /> <br />