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. `.. Corps of Engineers, Sacramento District 402 Rood Avenue, Room 142 Grand Junction, Colorado 81501-2563 March S, 2000 WETLANDS DELINEATION CONSULTANTS Increasingly, potential applicants for Department of the Anmry penmito are hiring environmental consultants to do wetlands detenminationa and delineations for them. In addition, because of Federal budgetary and work force constraints, wa are requesting that marry potential applicants have wetlands delineations done by consultants. Under existing constraints, the Corps of Engineers will field verify as many wetlands deltneeti ors as posaibte. Ya recommend that wetl ends delineetioro performed by consul tents be submitted for review and verifiestion at leeet one month 1n advance of a submittal of s Department of the Army permit application. All wetlands delineatiore will be reviewed to insure eovplierce with the methodology contained in the Corps of Engineers wetlands Delineation Manual dated January 1987 and that sufficient information is provided to justify the wetlands/upland boundaries ea shown on the delineation map(s). To obtain e jurisdictioneL determination letter tram the 4estern Colorado Regulatory Office, ail consultant-prepared wetlands delineationv shall contain: 1. A wetlands detineetion map depicting a point to point survey of the wetlands boundary as flagged by the consultant in the field. The consultant should review the survey for accuracy before submittal to this office. Ve prefer topographic maps with contour intervals of one or two feet end at a scale of 1 inch equals 100 feet. However, theca speeifleatlons may very depending upon the scope of the delineation and the nature of the project. In certain sltuatlone, a point to point survey of the wetlands boundary may not be required. However, the boundary suet be reproducible in sane roamer. The consultant should contact this office for approval before submitting a delineetfon without a point to point survey. In all cases, the wetlands boundary moat be oerked with survey flagging or stakes in the field before this office will conduct a site inspection to verify the delineation. The flaps or stakes oust be sequentially rusrbered end those rasrbera shall appear on the survey for each point; 2. The type(s) of wetlands present, such es riparian willow, wet meadow, marsh, etc., should be shown on the delineation map. The respective sizes in acres of each type should be included either on the map or in a report; 3. The location of all aeoQle sites should ba shown an the delirxation map(s); 4. wetlands delineation date forms, or eimllar data sheets, for each aanQte site, eross- referenced to the sites should be shown on the dellneetton map(s). The data for each serrple site shall clearly list the indicators for the soils, vegetation and hydrology, and shell include the basis for determining whether the Semple site is wetlands or upland. The number of smrQle sites will very depending upon the size end shape of the wetlands, the degree of difficulty in differmtiatinB wetlands and upland, width of transition zones, ate.; 5. A site location map, preferably a 7.5-minute USGS quadrangle, shell be included and any other pertinent maps of the site; end 6. A brief written report shall be included with the submittal. This report should list the property owner(s) and/or the developer(s) requesting the delineation. The report shall also describe the nature of the proposed development, end when a permit application will be submitted for the project. Your report should explain the basis for the wetlands boundary location end any problen~a or questionable areas. The dates of the actual fieldwork should also be ircluded fn this narrative. 7. For isolated waters, inlluding isolated wetlands, note in your delineation report any observed and/or donasented examples of an interstate or foreign commerce connection. Exarples include, but are not limited to: • Uae for recreation by fnteretate or foreign travelers. • Uee for taking fish or shellfish sold in interstate or foreign commerce. • Use by industries operating in interstate or foreign commerce. • Uae by birds protected by Migratory Bird Treaties (including migratory songbirds). • Use by other migratory birds [hat cross state lines.