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HOM,~~6 A]PaE <br />GRANTS NM OFFICE <br />0 ~ 26f~~® <br />~/ViS ~~// <QQU <br />G, <br />Mini~9 anq Sa feafiorl <br />r "' <br />i ~ '; 4 <br />Alan D. Cox 11 ~~ <br />Project Manager- Prtch <br />_. , <br />_; <br />December 15, 2006 <br />Via CERTRIFIED MAIL /RETURN RECEII'"1' REQUESTED <br />Mr. Bob Oswald Re <br />Colorado Depaztment of Natural Resources ~~VQQ- <br />~ Division of Minerals and Geology OF <br />701 Camino del Rio, Room 725 C 20 t <br />Durango, CO 81301 ~j/ebur, , yr, 2Q0(j <br />RE: HOMESTAKE PITCH RECLAMATION PROJECT M/~//,t c~~ ~c~ <br />2006 ANNUAL G}ia'&E~3I:^R~PQRB' (M-1977-004HR) ~ `'J~a e~ oq~ <br />Dear Mr. Oswald: <br />Attached you will find the 2006 Geotechnical Report for the waste rock disposal areas at the <br />Homestake Pitch Reclamation Project. The waste rock dumps were inspected monthly in 2006, <br />except when winter conditions prohibited access, in accordance with the recommended monitoring <br />program. The history of the rock dumps has been provided in previous annual reports and is not <br />repeated in this discussion. A site map with piezometer locations is provided as Figure 1. <br />Detailed analysis and presentation of the 2006 data from all piezometers aze provided in the <br />following pages. <br />The water levels in the waste rock dump piezometers in 2006 continued to show seasonal <br />fluctuations similar to those observed in past yeazs. A chart with 2006 data is provided as Figure 2 <br />and a chazt with piezometers levels since 1996 is provided as Figure 3. The Y-axis on these plots is <br />labeled as depth to water from ground surface. Please note that prior to October 2001 data was not <br />obtained from piezometer IC10600 due to the presence of a gravel obstruction that blocked the <br />passage of the piezometer. The Visual inspections conducted in 2006 indicate stable conditions for <br />the Indian Creek and Tie Camp waste rock dumps. <br />If you have questions, please feel free to contact me in the Grants NM office (505) 287-4456 x25 or <br />via cell phone at (505) 400-2794. <br />Sincerely <br />NOMEBTAKE MINING COMPANY Gi CAIIFGRNIA <br />Alan D. Cox <br />Project Manager <br />cc: Rocky Chase - SLC office <br />Vern Kelso - Sazgents office <br />Phillip De Dycker - ARCADIS-US, Inc. <br />`[{ . NOMEBTAKE MININA COMPANY OF CALIFORNIN 0 P. CI. BOX 9B, GRANT6, NM B')02G TELE: I50$) 2BT~4456 0 FAX: 15G5) 2BT-92B9 <br />