HomeMy WebLinkAbout1.07 Stormwater Management PlanGrass Mesa Telecommunication Tower July, 2017
Garfield County Limited Impact Review
Stormwater Management Plan
Grass Mesa Telecommunications Tower
Garfield County, Colorado
Stormwater Management Plan
1.0 Construction Site Location Description
The Grass Mesa Telecommunication Tower project consists of building one 160-foot tall self-
supporting telecommunications tower and one 8-foot by 20-foot building within a 40-foot by 36-
foot fenced compound area. Also proposed is a 56-foot long by 10-foot wide dirt access driveway
to the tower site from the existing road to the north (Quick Silver Way). The purpose of the tower
will be to support antennas for telecommunications and broadcasting. The total project footprint
will have an approximate area of disturbance of 2,000 sq. feet (0.04 ac) in size. Project
construction is scheduled for late summer of 2017 and should be completed within five (5) weeks,
the first and last weeks of which being the only duration of active construction.
2.0 CDPHE Permitting
The total project disturbance of 0.4-ac is beneath the threshold of what the CDPHE General
Permit defines as “small construction activity”, which constitutes one to five acres of disturbance.
Therefore, due to the fact construction of this telecommunications facility will result in land
disturbance less than one acre in size, this project does not require permit application and
authorization under the Colorado Department of Public Health and Environment’s (CDPHE)
General Permit No. COR-030000 for Stormwater Discharges Associated With Construction
Activity. Additionally, this site is not part of a common plan or related infrastructure that will
ultimately disturb equal to or greater than one acre.
3.0 Construction Activities
The clearing and grading of the construction site will not result in any stockpiled soil. All cleared
soil will be utilized for the pad of the 8-ft by 20-ft accessory structure. One (1) culvert will be
installed under the dirt access road to prevent damage to the roadside ditch next to Quick Silver
Way. Additionally, the negligible slope of the tower location area will not create significant
stormwater flow during precipitation events. The disturbance activities associated with
construction of the Grass Mesa Telecommunications Tower project are not likely to adversely
affect stormwater or surface water quality. However, as a precautionary measure, HRL
recommends the consideration of wattle installation on the downstream side of the culvert
during construction.
T:\CLIENTS\MOUNTAIN RADIO SYSTEMS\GRASS MESA TOWER\PERMITTING\MRS Grass Mesa Tower Site Location map 6-15-17 11x17.mxd
Author: E. Fought
Revision: 1
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Date: 6/19/2017
0 1 2Miles#*±
0 100 200Feet
Site Location MapSite Location Map
39.511671 -107.749799Section 23, Township 6 South, Range 93 West
Grass MesaGrass MesaTowerTower
USGS Quads:and RifleSilt
Quick Silver Way
#*44'25'
40'
56'
36'
Pole
Diagram not to scale
Quick Silver Way
Map Features
Local Road
Overhead Powerline#*160' Tower
Parcel Boundary
8' x 20' Building
Assessment Area
40' x 36' Tower Site
Driveway Boundary