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Temporary Substitute Supply Plan -Line Camp, Montezuma County, SEP 2004, Page 21
<br />Figure 13. Explanation of Map (Figure 12)
<br />1. Map Legend:
<br />Green hatched areas show existing forested areas
<br />Blue hatched areas show open water (Dolores River and current pond in pit (2.42 acres)
<br />Red hatched area currently has topsoil stripped off and is being (or capable of being) mined.
<br />This is currently 2.76 acres in size.
<br />Dark blue lines show the Home Ditch, plus laterals as they existed prior to beginning of mining.
<br />Black line is permit boundary for permit M-2001-001.
<br />Thick cyan lines show areas normally irrigated by Home Ditch and dried up by pit operations.
<br />These areas are described in detail below.
<br />2. The purpose of the dry-up is to provide water to substitute for water consumed by the operation of the Line
<br />Camp Pit (including evaporation from pit pond(s), dust control (including during crushing), washing of sand and
<br />gravel, and water shipped with sand and gravel hauled from the site. The dry-up is taken from the 39.9 acre fre/d
<br />south of the old driveway (not the entry road currently shown on the map), which histohcally had consumed 63.4
<br />acre-feet of water per year.
<br />3. For the 2002 SWSP year (May 2002-Apri12003), a total of 21.35 acres was required [o be dried up. It was
<br />requested that this area remain unchanged for the 2003 S WSP year, and this is again requested for the 2004 SWSP
<br />year. However, because of the terrain and geometry, the area officially delissated as being "dried up° is 22.03 acres,
<br />being bounded uphill by the Home Ditch itself, and otherwise by the mining permit boundary (except for the "tail" for
<br />water discharge line to the south). Actually, because the permit boundary does not precisely follow the edge of the
<br />irrigated field, the area dried up is actually 22.28 acres, or 0.93 acres greater than mandated, and thus making
<br />available 35.4 acre-feet of water each year for substitution. In addition, the portion of the field south of the pit permit
<br />area (6.92 acres) was not irrigated in 2003, and thus provided an additional 11.0 acre-feet of water for other users.
<br />4. The Home Ditch is currently capable of conveying water, with regular routine maintenance. Some laterals
<br />have been temporarily discontinued, and will be replaced in accordance with the reclamation plan as approved by the
<br />State (and provided in the original application and S WSP).
<br />5. While it is planned to irrigate the 6.92-acre area south of the permit area in 2004, the 22.28 acres will remain
<br />as dried-up land to provide 35.4 acre-feet of water for the pit operations. The owner of the Home Ditch will continue to
<br />use the remaining 51.6 acre-feet of water for irrigation of the remaining fields (the small field south of the pond (1.8
<br />acres), the field north of the (old) driveway (13.0 acres), and the remainder of the field south of the (old) driveway
<br />(17.6 acres), plus the 0.1 cfs allowed for domestic use for the Line Camp itself.
<br />6. The areas dried up are c/eady defined on the ground by permit boundary markers, the Home Ditch, and the
<br />tree-lines of the various woodlands. We will be pleased to show the Water Commissioner or other officials the
<br />locations on the site, at their convenience. (Due to the nature of the various allegations being made by opponents of
<br />this mining operation, we cannot allow persons other than employees of the +3ppropriate state agency, on official
<br />business, to enter the site.)
<br />Prepared by Nathan A. Barton, PE, DEE, 12 March 2004. For questions, call 605-390-7255.
<br />4. Based on annual consumption (See Figures 1, 2, and 3), other than the land diverted from irrigation by
<br />the mining of sand and gravel (a maximum of 22.03 acres), no additional land be needed to be dried up
<br />in order to allocate consumption to the sand operation. However, to ensure a conservative estimate of
<br />future availability and to meet unanticipated needs, the additional 6.92 acres temporarily dried up can be
<br />again dried up as necessary (as shown on Figure 13).12 In general, water uses are significantly lower
<br />than the water available from dry-up of land diverted from irrigation by the extraction, especially once
<br />mining has ceased and reclamation is completed.
<br />5. The Home Ditch is owned by the owner of the land on which the ponds wil! be located. The owner has
<br />signed the attached Affidavit of Use (Attachment 4) and Dry-Up Covenant (Attachment 5).
<br />12 This does not take into account inflows from runoff of precipitation, in particular from areas which have been stripped and are
<br />free from vegetation, therefore with reduced evapotranspiration losses, since the SEO has said that such flow may not be taken
<br />into account.
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