2008-11-26_PERMIT FILE - M2008080 ‎(3)‎

• Permit No: M2008080
• IBM Index Class Name: PERMIT FILE
• Doc Date: 11/26/2008
• Doc Name: Exhibit J- Vegetation Information
• From: Journey Ventures, LLC
• To: DRMS
• Media Type: D
• Archive: No

SECTION III: MA ANALYSIS
R. CHARACTERISTICS OF TRIBUTARY (THAT IS NOT A '1'tNW) AND ITS ADJACENT WETLANDS (IF ANY):
This section summarizes information regarding characteristics of the tributary and its adjacent wetlands, if any, and it helps
determine whether or not the standards for jurisdiction established under Rnpanos have been met.
The agencies will assert jurisdiction over non-navigable tributaries of TN Ws where the tributaries are "relatively permanent
waters" (RPWs), i.e. tributaries that typically flow year-round or have continuous now at least seasonally (e.g., typically 3
months). A wetland that directly abuts an RPW is also jurisdictional. If the aquatic resource is not a TNW, but has year-round
(perennial) flow, skip to Section t11.D.2. If the aquatic resource is a wetland directly abutting a tributary with perennial flow,
skip to Section III.D.4.
A wetland that is adjacent to but that does not directly abut an RPW requires a significant nexus evaluation. Corps districts and
EPA regions will include in the record any available information that documents the existence of a significant nexus between a
relatively permanent tributary that is not perennial (and its adjacent wetlands if any) and a traditional navigable water, even
though a significant nexus finding is not required as a matter of law.
If the waterbody° is not an RPW, or a wetland directly abutting an RPW, it JD will require additional data to determine if the
waterbody has a significant nexus with a TNW. If the tributary has adjacent wetlands, the significant nexus evaluation must
consider the tributary in combination with all of its adjacent wetlands. This significant nexus evaluation that combines, for
analytical purposes, the tributary and all of its adjacent wetlands is used whether the review area identified in the JD request is
the tributary, or its adjacent wetlands. or both. If the JD covers a tributary with adjacent wetlands, complete Section 111.8.1 for
the tributary, Section IIL8.2 for any onsite wetlands, and Section 111.8.3 for all wetlands adjacent to that tributary, both onsite
and oftsite. The determination whether a significant nexus exists is determined in Section III.C below.
1. Characteristics of non-TNWs that flow directly or indirectly into TNW
(i) General Area Conditions:
Watershed size: 25(X) square miles
Drainage area: 2 square miles
Average annual rainFdl: Winches
Average annual snowfall: 40 inches
(ii) Physical Characteristics:
(a) Relationshipwiltt "IN1V:
C] Tributary flows directly into'lN W.
? Tributary flows through Pick List tributaries before entering TN W.
Project waters arc 2-3 river miles from TNW.
Project waters are Pick List river miles from RPW.
Project waters are 2-15 aerial (straight) miles from TNW.
Project waters are Pick List aerial (straight) miles from RPW.
Project waters cross or serve as slate boundaries. Explain:
identify flow route to TNW`: Smith Branch of Plumb Ditch flows directly into the South Platte River.
Tributary stream order, if known:
(b) ticnr:_rgl_Triryptarv CC;hargcteristics (check all that -M,
Tributary is: Natural
® Artificial (man-made). Explain: irrigation ditch constructed of dry kind.
? Manipulated (man-altered). Explain:
Tributary properties with respect to top of bank (estimate):
Average %vidth: 7 feet
Average depth: 3 feet
Average side slopes: 2:1.
Primary tributary substrate composition (check all that apply):
? silts Sands ? Concrete
? Cobbles ? Gravel ? Muck
? Bedrock ? Vegetation. TyNi%cover:
'Note that the Instructional Guidebook contains additional information regarding swalcs, ditches, washes, and erosional features generally and in the and
West.
s I-low route can be described by identifying, e.g., tributary a, which flows through the review area, to flow into tributary b. which then fowl into TNW,
88