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6. The stability analysis performed by the Division indicates a slope failure when the profile is analyzed with the second <br />silt and clay layer at the proposed 37 foot offset. The profile was analyzed with the proposed 82 foot offset from the <br />adjacent fence line and indicated safety factor was above 1.00 and therefore acceptable to the Division (see attached). <br />See response for number 5. <br />7. Please indicate the location of PA04-131-108 on Figure No. 1- Parsons Mine - Borings used for stability analysis. <br />The boring location shows on the site plan prepared by Lafarge dated 1110112004 submitted with the boring <br />information. It is approximately 200 feet ENE of Boring PA04-BH11 <br />8. Please provide the source of the ground water data for Borings PA04-131-108 and PA04-13H11. <br />Exhibit G indicates the groundwater level in MW-07 was approximately 9 feet below the ground surface during the <br />monitoring period. Based on this information a depth to groundwater of 9 feet was incorporated in our analysis. <br />9. Please explain the difference in piezometric surface elevation between the stability analysis for PA04-BH011 used for <br />4A and 4C. <br />The piezometric surface used in the analysis of 4C incorporated information from MW-12 and MW-13. When the water <br />level is raised to the highest level recorded (see Exhibit G) the proposed set back distance still has a factor of Safety above <br />1.00 (see attached). <br />Scott Palmer, P.E. <br />Deere & Ault Consultants <br />600 South Airport Rd., Bldg A, Suite 205 <br />Longmont, CO 80503 <br />scott.palm er(a,deereault. com <br />ph 303-651-1468 <br />fax 303-651-1469