2015-01-04_GENERAL DOCUMENTS - NO NUMBER

DEPARTMENT OF THE ARMY
CORPS OF ENGINEERS,OMAHA DISTRICT
DENVER REGULATORY OFFICE,9307 SOUTH WADSWORTH a =�Q
/ LITTLETON,COLORADO 80128-6901
A B 4 1016
RE: Section 404 of the Clean Water Act Initial Comments
To whom it concerns:
In accordance with Section 404 of the Clean Water Act,the Corps of Engineers regulates
the discharge of dredged or fill material, and any excavation associated with a dredged or fill
project,either temporary or permanent, into waters of the United States(WOUS). You should
notify this office if the project proposed falls within these regulated activities because the project
may require a Department of the Army Section 404 permit.
A WOUS may include ephemeral and/or perennial streams, wetlands, lakes, ponds,
drainage ditches and irrigation ditches. A wetland delineation must be conducted, and verified
by the Corps of Engineers, using the methods outlined in the Corps of Engineers Wetlands
Delineation Manual(Environmental Laboratory 1987) and Regional Supplement to the Corps of
Engineers Wetland Delineation Manual: (using applicable Regional Supplement)to determine
wetlands based on the presence of three wetland indicators: hydrophytic vegetation, hydric soils,
and wetland hydrology. Wetland delineations must be conducted in the field by a qualified
environmental consultant and any aquatic resource boundaries must be identified accordingly.
Once the aquatic resources have been identified, only this office can determine if they are
WOUS. Please note that development of the upland areas, avoiding stream and wetland
resources,does not require authorization from this office.
Nationwide Permits(NWP)authorize common types of fill activities in WOUS that will
result in a minimal adverse effect to the environment. Descriptions of the 52 types of nationwide
permit activities and their general conditions can be found on our website:
httt://www.nwo.usace.army.miI/Missions/ReQuiatoDProgram/Colorado.aspx.
Some fill activities require notifying the Corps before starting work.Also,some types./sizes of
work may require additional information or mitigation.
Regional General Permits(RGP)authorize specific types of fill activities in WOUS that
will result in a minimal adverse effect to the environment. Descriptions of the 4 types of regional
general permit activities and their general conditions can be found on our website:
http://www.nwo.usace.arm).mil/Missions!RegulatorvProgram.!Colorado/RegionalGencralPermits
.aspx.These fill activities require notifying the Corps before starting work, and possibly other
local or state agencies. Also, some types,isizes of work may require additional information or
mitigation.Please note several of the RGP's are applicant and location specific.