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Wetland & Aquatic Sciences <br />Wildlife Ecology <br />Landscape Architecture <br /> <br /> <br />2111 N. Northgate Way, Ste 219 Seattle, WA 98133 206-525-8122 raedeke.com <br /> <br />Associates, Inc. <br />Raedeke <br />TECHNICAL MEMORANDUM <br /> <br />April 19, 2018 <br /> <br /> <br />To: Mr. Jerry Martens, <br />Marten Enterprises, LLC <br /> <br />From Christopher W. Wright <br />Principal / Soil and Wetland Scientist <br />Raedeke Associates, Inc. <br /> <br />RE: Marian Meadows – Response to County Comments <br />(RAI Project No. 2006-087-004) <br /> <br /> <br />At your request, the purpose of this technical memorandum is to respond to Kittitas <br />County comments on our Stream and Wildlife Habitat Assessment Update (Raedeke <br />Associates, Inc. 2016) regarding the potential for snow melt to flow through the swale <br />feature on the Marian Meadows property. Kittitas County requested this review because <br />a portion of the swale may be used to convey stormwater from the proposed <br />development. <br />SITE LOCATION <br />The project site is located in Sections 1 and 12, Township 20 North, Range 13 East, <br />W.M. in Kittitas County, Washington. The property consists of 560 acres located north <br />of Easton, on the southwest facing slopes of Easton Ridge. The swale is located in the <br />south-central portion of the site as depicted on Figure 3 of the 2016 report. <br /> <br />BACKGROUND <br />We previously investigated the area identified as a Type N stream by the WDNR within <br />the proposed development area of the Marian Meadows PUD property. This area <br />contains a swale feature that is approximately 10 feet wide and the bottom of which is <br />two feet below the surrounding ground surface. Vegetation in the swale consists of <br />scattered lodgepole pine and Douglas fir trees, with a shrub understory of common <br />snowberry. Western wheatgrass (Agropyron smithii) and diffuse knapweed are the most <br />abundant herbaceous species observed in the swale. Soils in the swale are brown (10YR <br />4/3) sandy loams with no redoximorphic features. We did not observe hydrology within <br />the swale to a depth of 16 inches during or 2016 site visit. No evidence of frequent or <br />prolonged inundation was seen, nor was evidence of scour from flowing water observed.