Laserfiche WebLink
Evaluation of Potential Impacts <br />to Wetlands on the Sage Hill Farm from the <br />Proposed Nix Property <br />Sand and Gravel Operation <br />hairy sedge and three-square bulrush. The driest portion of the wetland, which occurs along its <br />southern and western edges, is dominated by drier species including foxtail barley, and salt grass. <br />Canada thistle, sweet clover, and pasture grasses also occur in drier portions of the wetland and <br />areas adjacent to the wetland (Photograph 1). <br />The wetland lacks trees and shrubs. However, the owner of the Sage Hill Farm has planted <br />willows in the northern portion of the wetland south of County Road 28 (Photograph 2). <br />The soil survey shows Vona sandy loam as occurring in the wetland. This is not a hydric <br />(wetland) soil mapping unit. Soil pits dug in the wetland found a 0- to 2-inch surface horizon of <br />silty loam to loam soil. This horizon was underlain by a thicker layer of silty, gravely, or sandy <br />clay. This subsoil horizon was saturated at the time that the soil pits were dug (August 14, 200]) <br />and exhibited a dark color and redoxymorphic features indicative of wetland soils. <br />During field observations, water was observed flowing into the wetland from three irrigation <br />laterals on the south side of the wetland (Photographs 3, 5 and 6). The locations of these laterals <br />are shown on Figure 2. One of the laterals dischazges into the slough on the east side of the <br />wetland (Photograph 6). Water was also observed in the irrigation pond on the Mayer property <br />immediately east of the subject wetland. It was estimated that the water level in this pond was 4- <br />to 6-feet above the ground surface of the wetland. Water was also observed in a pond on the <br />Sage Hill Farm south of the subject wetland (Figure 2). Water in this pond reportedly originates <br />from a spring, and also from laterals from the Side Hill Ditch. <br />STUDY METHODS <br />This evaluation was conducted based on a review and analysis of existing data in the project area, <br />along with data specifically collected for the study. Existing documents reviewed are as follows: <br />011-074.000 Wright Water Engineers, Inc. Page 3 <br />November 2001 <br />