Laserfiche WebLink
3.1 Traverse A -A' Through H -H' <br />Fall 2011 Subsidence and Geologic Field Observations <br />Box Canyon, Apache Rocks, and South of Divide Mining Areas <br />3.0 TRAVERSES AND OBSERVATIONS IN THE BOX CANYON, APACHE <br />ROCKS, AND SOD MINING AREAS <br />A discussion of observations associated with traverses A -A' through P -P' is provided in this <br />section (Maps 1 and 2). Several of the photographs taken during the October 2011 field visit are <br />included as figures in the text of this report. Where these images have notable differences from <br />comparable photographs taken in previous years, some of the older images are also included for <br />comparison purposes. However, to reduce the overall size of this document, narrative text and <br />photographs for traverses with no observed changes are excluded. <br />Photographs were obtained from each of the photographic observation points (with the exception <br />of Photographic Observation Points 8, 8A, and 11 which will be discussed later in this section) <br />and compared to previous years for identifiable changes. If no changes were noted, the <br />photographic observation point images were archived and not included in this report. <br />Traverses A -A' through H -H' were each visited during October 2011. However, Traverse A -A' <br />was cut short due to ongoing construction of the Refuse Pile Expansion East area which had <br />made the road impassable above a certain location. As a result, WWE was unable to visit the <br />Photographic Observation Points 8 and 8A to obtain comparative photographs of the landslides <br />on the western edge of West Flatiron. <br />Observation notes and photographic documentation were recorded along the subject traverses as <br />appropriate. However, no noticeable changes were observed between the spring and fall 2011 <br />field visits (both as observed in the field and in comparison of photographs taken from each field <br />visit). Specific details associated with these traverses (i.e., topographic description, overburden <br />depth, exposed surficial materials, etc.) are not included in this report, but can be found in earlier <br />versions of this semi - annual report. <br />Photographs obtained from Photographic Observation Points 1, 2, and 3 (located along Traverses <br />E -E', F -F' and H -H', respectively) were compared to images obtained from these locations in <br />831 - 032.793 <br />May 2012 <br />Wright Water Engineers, Inc. Page 5 <br />