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AR 1S <br />Introduction <br />The Pitch Reclamation Project (property) is an inactive mine owned by Homestake <br />Mining Company (HMC) that is currently in the final closure and reclamation phase of <br />its mine life. The property is located in Township 48 North, Range 6 East in Saguache <br />County approximately 25 miles west of Salida, Colorado near the town of Sargents in <br />the Gunnison National Forest. <br />As reported in annual Geotechnical Reports, water levels in two piezometers in the <br />Indian Creek Waste Dump on the 10,300 and 10,370 -foot benches have become <br />difficult to access due to clogging. HMC proposed replacement of the existing <br />piezometers with new piezometers and abandonment of the clogged, existing <br />piezometers. <br />ARCADIS staff Joe Gilbert and Paul Williams planned and conducted the field <br />operations in coordination with Dale Davis, site manager for Homestake Mining at the <br />Pitch site (HMC- Pitch). This report summarizes the field activities performed by <br />ARCADIS and presents results of the well abandonment, drilling, piezometer <br />installation, and piezometer development. The following field activities were <br />performed: <br />• August 3 — a site visit was conducted to assess the existing piezometers, and <br />to assess the site for possible drilling limitations. Radiologic monitoring and <br />sampling was conducted on waste rock at the existing piezometer locations to <br />establish appropriate health and safety protocols during subsequent work. <br />• August 23 2011 — August 31 2011 — Abandonment of the existing <br />piezometers IC -10300 and IC -10370 was completed. Drilling and well <br />completion of new piezometers at IC- 10300R and IC- 10370R was also <br />completed. <br />• September 15 2011 — September 16 2011 — Replacement piezometers IC- <br />10300R and IC- 10370R were developed through a combination of bailing, <br />surging, and over - pumping. <br />Pitch Reclamation Project - <br />Piezometer Replacement <br />Field Activities Report <br />g:\apmjed\bamck\ao000102.0001 pitch reclamation pmjed\ o102, bardck- pilch\piezo replacement reportingWmftVar pilch_piezo_r lacement_pdd.doc 1 <br />