APPCOR10133

• Permit No: C1981026
• IBM Index Class Name: Application Correspondence
• Doc Date: 7/28/1981
• Doc Name: ADDENDUM I - RESPONSE TO PRELIMINARY ADEQUACY REVIEW COMMENTS
• Media Type: D
• Archive: No

,' ,'
pond 4. The remaining 9.73 acres or 88~ of the subirrigated
region lie east of the pond 4 dam downstream of the area
of proposed physical disturbance as illustrated on
Figure 3.
The only region within the area mapped as subirrigated on
Figure 3 that has the geomorphic potential for agri-
cultural activities is east of sediment pond 4, north of
the stream channel and north of the M&T access road. This
region comprises a mere 4 acres. To the best of Wyoming
Fuel Company's knowledge, nowhere in North Park is a
geographically isolated tract of this size economic for
any kind of agricultural activity other than rangeland.
Regional irrigation practices on acreages of this size
within North Park are non-existent.
To summarize, Wyoming Fuel Company reemphasizes the six
conclusions stated in Section 2.06.8(3) on Pages 114-115.
In addition, based on the subsequent mapping and analysis
of the North Fork of Bolton Draw, the following conclusions
are presented in support of a negative AVF finding:
1) Although the unnamed alluvial soil (Unit 8) comprises
14.46 acres, only 5.40 acres generally within this
region is subirrigated. This area is minimal in size
and is geographically isolated from the downstream
areas of Main Bolton Draw that are mapped as Holocene
alluvium.
2) Of the 5.40 acres that are subirrigated, only 0.67 acre
or 12~ of the area will be physically disturbed by
overburden removal, topsoil stockpiles or sedimentation
pond 4. This is an insignificant impact on an isolated
minimal region.
3) Nowhere in North Park is it economic or practical to
flood irrigate an isolated tract of land less than 5
acres in size.
Main Bolton Draw
As requested by the CMLR staff, Wyoming Fuel Company submit
the following additional documentation concerning the
alluvial valley floor identification in Main Bolton Draw:
Exhibit 2 from the April 14, 1981 application has been
revised to include the extent of the 55 acres of land
historically flood irrigated as discussed in Section 2.06.8
(3) Page 110. This shaded area is labeled on the map as
"region of attempted past flood irrigation".
According to the diversion records of the Bolton Ditch (as
indicated on Page 14 of the Willard Owens Associates Report;
the last usage of the ditch was in July, 1976. Wyoming
-9-