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HomeMy WebLinkAboutRS_Wetland_Assessment_20170118_v1 January 18, 2017 AOA-5346 John Graves johng.bluefern@gmail.com SUBJECT: Wetland and Stream Reconnaissance for: Minter PUD Townhouses Renton, WA (PRE16-000824) Parcels 214480-0295, -0285, -0500, -0488, and -0487 Dear John: On December 12, 2016 I conducted a wetland and stream reconnaissance on the subject property utilizing the methodology outlined in the May 2010 Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0). No wetlands or streams were identified on or adjacent to the property during the field investigation. The site is currently developed with the old Minter plant nursery and greenhouse facility. The property slopes down from north to south and nearly the entire property appears to have been historically graded. Vegetation on the site consists primarily of scattered tree clumps with dense patches of Himalayan blackberry (Rubus armeniacus). During the reconnaissance, a small remnant swale in the southeast corner of the property was reviewed. Vegetation within the vicinity of the swale included black cottonwood (Populus trichocarpa), big-leaf maple (Acer macrophyllum), Himalayan blackberry, and snowberry (Symphoricarpos albus). No hydrophytic plant communities were observed. Borings taken throughout the swale revealed highly disturbed profiles indicating historic grading. The soils were dry at the time of a “wet season” review and there was no evidence of ponding or prolonged soil saturation anywhere within the swale during the field investigation. John Graves January 18, 2017 Page 2 Conclusion No wetlands or streams were identified on or adjacent to the site. This determination is based on a field investigation during which no hydrophytic plant communities, hydric soils, or evidence of wetland hydrology or channels were observed. If you have any questions regarding the reconnaissance, please give me a call. Sincerely, ALTMANN OLIVER ASSOCIATES, LLC John Altmann Ecologist