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Corps of Engineers, Sacramento District 402 Rood Avenue, Room 142 Grand Junction, Colorado 81501-2563 August 2, 2001 WETLANDS DELINEATION CONSULTANTS Inereasirq ly, potential applicants for Department of the Arnry permits are hiring envi romrentaL eansultenta to do wetlands determinstiam erd delineetioro for them. In addition, because of Federal budgetary end work force eorotrsints, we ere requesting that many potential applicants have wetlerds delineations done by ~onsul~ent~. Under existf np corotreints, the Corps of Engineers will field verify es merry wetlands del(neatioro ea possible. Ye reeommerd that wet lards delineetioro performed Iry consultants be ar6mitted for review and verification at least one month in advance of a submittal of a Department of the Arnry permit application. All wetlands delineations will be reviewed to insure eouplienee with the methodology contained in the Corps of Engineers Nettends Delineation Manuel dated Jerxury 7987 and that sufficient information is provided to justify the wetlands/uplard baaderies as shown on the delineation map(s). To obtain e Jurisdictional detennirotion letter from the Yestern Colorado Regulatory Office, all consultant-prepared wetlands delineatioro shall contain: 1. A wetLarda delineation map depicting a point-to-point survey of the wet lards boudery es flagged lry the consultant in the field. The consultant should review the survey for accuracy before submi ttsl to this office. Ye prefer topographic naps with contour intervals of one or two feet erd at e scale of 1 inch equals 100 feet. 8owever, these specifications may very depending won the scope of the delineation and the roture of the project. In certain situations, a point-to-point survey of the wetlands borndery may not be required. 8owever, the bor+dary mret be reproducible in sane roamer. The consultant should confect this office for approval before submi ttinp a delineation without a point-to-point survey. In ell caeca, the watlande bourdery mat he marked with survey flapping or stakes in the field before this office will conduct a site iropeetion to verify the delineation. The flags or stakes nuet be sequentially numbered erd those rxmdners shall appear on the survey for each point; 2. The type(s) of wet lards present, such ea riparian willow, wet meadow, marsh, ate., should be shown on the delineation map. The respective sizes in acres of each type should be included either an the map or in a report; 3. The facet tan of ell amrpLe sites should be shown on the delineation rrep(s); i. Vetlerds deliroetion date forme, or similar data sheets, for each sample site, eroas- referenced to the sites should be shown on the delineation map(s). The date for each sample site shell clearly list the irdicatore for the sot le, vegetal ion and hydrology, erd shall include the basis for determining whether the sample site is wetlands or upland. The nudxr of sample sl tee will very depending upon the sire end shape of the wetlands, the degree of difficulty in differentiating uet!erds end ~lerx7, Width of transition zenea, etc.; 5. A site Location map, preferably a 7.5-minute USGS quadrangle, shall be included end erry other pertinent maps of the site; and 6. A brief written report shall be ircl~ded with the sulxnittal. This report should list the property owner(s) end/ar the developer(s) requesting the delineation. The report shall also describe the nature of the proposed development, and when a permit application will be sudnitted for the project. Your report should explain the basis for the wetlands boundary location erd any problems or questionable areas. The dates of the actual fieldwork should also be included in this narrative. 7. For isolated waters, including isolated wetlerds, note in your delineation report any observed and/or documented examples of en interstate or foreign commerce correction. The Corps of Engineers will ackrewledge wetlands delineations that are complete and accurate. In the event that work force constraints preclude timely field verifications, this office may issue a qualified approval. However, prior to definitive regulatory approvals, such es a letter of no Federal jurisdiction, nationwide general permit verification, individual permit issuance, etc., wetlerds maps will usually be field verified by the Corps of Engineers.