1999-11-15_HYDROLOGY - M1977378 ‎(2)‎

• Permit No: M1977378
• IBM Index Class Name: HYDROLOGY
• Doc Date: 11/15/1999
• Doc Name: Project Completion Insp., Upland Hydrologic Control Project
• From: DMG
• To: CDPHE-WQCD
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

STATE OF CC_)LU1\f-NL_,10
DIVISION OF MINERALS AND GEOLOGY
Department of Natural Resources 1313 Sherman St, Room 215 1VE•,4 �F—_ICE
Denver,Colorado 80203 ;� €���t �,,�a :E° ;"" p,`�M ,�,/° D I V I S I O N O F
Phone:[phone] `:�!i-.F`..J ! 5 1dY. V ( M I N E R A L S
FAX:[phone] �4 77. 3 7e GEOLOGY
RECLAMATION
DATE: November 11 , 1999 --� l '/ f. MINING-SAFETY
Bill Owens
TO: Larry Perino, SGC Reclamation Manager ,� L'. Governor
cher
Sarah Johnson CDPHE WQCD 0� Ex e al rector
Michael
/ B.Long
FROM: Wally Erickson 4"�LLe � o����� sion Director
RE: tproject Completion Inspection, Upland Hydrologic Control Pr;iect_� G0oi�gey
CDPS Permit No. CO-0044768, Consent Decree and Order, Case 94CV5459,
Sunnyside Mine, DMG Permit No. N97-378.
Pursuant to CDPHE WQCD request, dated October 18, 1999, DMG conducted a project
completion inspection of the Upland Hydrologic Control Project for the Mayflower Facility.
Inspection Date: October 19, 1999
SGC Representative: Larry Perino
DMG Inspector: Wally Erickson
Summary: Upland diversion ditches and culverts for the project, identified in SGC's
report to Ms. Sarah Johnson, CDPHE WQCD, received by DMG on October 14, 1999,
were inspected. Copy of SGC's October 14, 1999 submittal is attached for reference.
Also attached to this report is a location map, showing the approximate locations of the
upland diversion ditches and diversions A, B and C.
Installation of the diversion structures and reclamation of associated affected lands
appeared consistent with SGC's October 14, 1999 submittal, and appeared to have been
completed in accordance with the conditions of the Consent Decree and in accordance
with the performance requirements of the Colorado Mined Land Reclamation Act and the
Hard Rock/Metal Mining Rules and Regulations of the Colorado Mined Land Reclamation
Board.
Observations: Upland Diversion Ditch had been constructed along the north side of
the Mayflower Tailings Pond 1 . The ditch begins at the topographic rise which creates a
drainage divide near the NE end of Tailings Pond 1 . The ditch proceeds west and outlets
to the Boulder Creek channel located along the west side of Tailings Pond 1 . The diversion
ditch receives flow from upland diversions A and B, as well as upland surface runoff. The
upland diversion ditch is an open channel, lined with heavy black plastic and surfaced with