Laserfiche WebLink
4.1 Vegetation Mapping - 1987 A blueline print of a single -frame black and white aerial <br />photograph of the study area at a scale of 1" = 400' was used as the base for mapping <br />vegetation. Stereo - paired color and false -color infrared aerial photographs at a scale of 1" _ <br />500' were used to assist in photo interpretation and delineating map unit boundaries on the <br />base map. The map unit delineations were refined with ground inspection while conducting <br />the field sampling activities. Mapping units were based on the vegetal type classifications <br />previously identified. <br />The acreage of the various vegetation types were determined from the refined base map using <br />a Calcomp 9100 electronic digitizer. The digitizer is linked to an IBM (XT) personal computer <br />equipped with the appropriate software to calculate area from the digitized data. Each map <br />unit was digitized and the resulting areas summed for the corresponding vegetation types to <br />calculate total acreages. <br />4.2 Vegetation Mapping - 1999 In 1999 a 1:2133 scale color aerial photo was scanned at <br />600 dpi and used as a background to digitize map unit boundaries in AutoDesk AutoCAD R14. <br />The resultant drawing was then imported into Arc /INFO to obtain map unit acreage. The map <br />was then refined and verified in the field and final map unit acreage calculated <br />As required under 2.04.10(3) vegetation mapping was carried out in a sufficiently large <br />adjacent area to allow for evaluation of wildlife habitat. In this case the adjacent area <br />encompassed 1/2 mile outside of the proposed mine permit expansion. Since this relates to <br />wildlife habitat, it has been included on Map 2.04.11 -1, Wildlife Habitats and Sampling Sites <br />Map. The completed vegetation map including 1987 and 1999 vegetation mapping efforts is <br />presented as Map 2.04.10. <br />4.3 Floristics - 1987 A comprehensive plant species list was developed from floristic surveys <br />conducted by Dr. David Buckner of ESCO Associates, Inc. The floristic surveys were <br />completed in late June and early August, 1987 by conducting a walking reconnaissance of the <br />study area and noting species occurrence and distribution in the various vegetation types. The <br />floristic surveys were augmented with species lists prepared by Peabody's Environmental <br />Scientists while conducting the quantitative vegetation studies. <br />August 2013 (PR 08) 2.04.10 -14 <br />