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• <br />• <br />Spring 2011 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />5.0 TRAVERSES AND OBSERVATIONS IN THE BOX CANYON, APACHE <br />ROCKS, AND SOD MINING AREAS <br />A detailed discussion of observations associated with traverses A -A' through 0-0' (along with <br />accompanying Maps 1 and 2) is provided in this section. Many of the photographs taken during <br />the June 2011 field visit are included as figures in the text of this report. Where these images <br />have notable differences from comparable photographs taken in previous years, some of the older <br />images are also included for comparison purposes. <br />To reduce the overall size of this document, narrative text and photographs for traverses where <br />no noticeable change was observed are not included in this report. Photographs were obtained <br />from each of the photographic observation points (unless as previously noted) and compared with <br />photographs taken in the previous year for changes. If no changes were noted, the photographic <br />observation point images were archived and excluded from this report. <br />• 5.1 Traverse A -A' Through H -H' <br />Traverses A -A' through H -H' were each visited during the June 2011 field visit. Observation <br />notes and photographic documentation were obtained. However, no noticeable changes were <br />observed between the fall 2010 and spring 2011 field visit (both as observed in the field and in <br />comparison of photographs taken from each field visit). As such, specific details associated with <br />these traverses (i.e., topographic description, overburden depth, exposed surficial materials, etc.) <br />are not included in this report but can be found in older versions of this biannual report. <br />Photographs obtained from Photographic Observation Points 1, 2 and 3 along Traverses A -A' <br />through H -H' were compared to images obtained from these locations in previous visits. These <br />photographic comparisons found there to be no observable changes. As such, these images are <br />not included. <br />831 - 032.793 <br />September 2011 <br />Wright Water Engineers, Inc. Page 15 <br />