HomeMy WebLinkAboutRIVER DISTRICT BLOCK ONE MIXED-USE (ENCOMPASS) - FDP - FDP130015 - SUBMITTAL DOCUMENTS - ROUND 1 - DRAINAGE REPORT (3)Zone Identifier Scientific Name
Common
Name
90% Height at
Maturity (ft)
Composition
%
Overall Zone
Coverage %
A Salix exigua Coyote willow 9 30%
90%
A Salix planifolia
Plainleaf
willow
7.2 50%
A Salix irrorata
Dewystem
willow
5.4 20%
B Salix exigua Coyote willow 9 10%
70%
B Salix planifolia
Plainleaf
willow
7.2 40%
B Salix irrorata
Dewystem
willow
5.4 50%
C Salix exigua Coyote willow 9 30%
80%
C Salix planifolia
Plainleaf
willow
7.2 70%
D Salix exigua Coyote willow 9 10%
60%
D Salix planifolia
Plainleaf
willow
7.2 40%
D Salix irrorata
Dewystem
willow
5.4 50%
E Salix exigua Coyote willow 9 20%
80%
E Salix planifolia
Plainleaf
willow
7.2 50%
E Salix irrorata
Dewystem
willow
5.4 30%
F Salix exigua Coyote willow 9 100% 90%
Installation on Slopes
Grade soil, fertilize and seed as per general guidelines below.
Begin at the top of the slope and anchor blankets in a 12” deep and 12” wide initial anchor trench
(see Fig.2) and anchor with staples at 18” spacing.
Unroll blanket down slope in the direction of the water flow (see Fig.1). The blanket should not be
stretched but should have full contact with the soil. Anchor blanket using staples or stakes. See
“Staple Pattern Guide for Slopes” on the below.
Overlap edges of adjacent parallel rolls by approximately 6” and anchor with staples at 24” to 36”
spacing depending on the slope.
When blankets have to be spliced, place upper blanket end over lower blanket end (shingle style)
with 12” overlap and anchor with two staggered rows of staples at 12” spacing.
Anchor, fill and compact ends of blankets in 12” deep and 6” wide terminal anchor trench. Anchor
with staples at 18” spacing.
Staple Pattern Guide for Slopes
Fig. 1 Fig. 2
Fig. 3 Fig. 4