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<br />".~. ".. r.. 4" <br />1"l" - . <br /> <br />WELL LOCATION <br /> <br />In this report, the locations of wells are based on the U.S. Bureau <br /> <br />of Land Manage~ent system of land subdivision (fig. 2). <br /> <br />The local well number locates a well within a 10-acre (4.0-ha) <br /> <br />tract using the U.S. Bureau of Land Management system of land subdivi- <br /> <br />sion. The components of the local well number proceed from the largest <br /> <br />to the smallest land subdivisions. This is in contrast to the legal <br /> <br />description" which proceeds from the smallest to the largest land <br /> <br />subdivision. <br /> <br />The largest subdivision is the survey. The northern High Plains of <br /> <br />Colorado is governed by the Sixth Principal Meridian Survey (S) as shown <br /> <br />in figure 2A. The first letter of the well location designates the <br /> <br />survey. <br /> <br />A survey is subdivided into four quad~ants formed by the inter- <br /> <br />section of the baseline and the principal meridian. The second letter <br /> <br />of the well location designates the quadrant: A indicates the northeast <br /> <br />quadrant, B the northwest, C the southwest, and D the southeast. <br /> <br />A quadrant is subdivided in the north-south direction every 6 mi <br /> <br />(10 km) by townships and is subdivided in the east-west direction every <br /> <br />6 mi (10 km) by ~anges (fig. 23). The first numeral of the well loca- <br /> <br />tion designates the township and the second numeral designates the range. <br /> <br />The 36-mi2 (93-km2) area described by the township and range <br /> <br />designation is subdivided into 1-mi2 (2.59-km2), areas called seations. <br /> <br />The sections 4re numbered sequentially in the manner shown in figure 23. <br /> <br />The third number of the well location designates the section. <br /> <br />4 <br /> <br /> <br />,>-",-~~ <br />