Vernal Pool Restoration - American Society of Landscape Architects

Case
No. 038
The regu ulatory envi ironment an nd regulator
was suppoortive
of the project.
Did the client c reque est that othe er factors be b considereed,
such ass
energy savvings,
usabble
green sp pace, or pro operty value e enhancem ments? No
Cost & Jobs Ana alysis
Estimate ed Cost of Stormwater
S r Project: $1 100,000-$5000,000
(Public
funding: SState)
Was a green
vs. gre ey cost analysis
perfor rmed? No
Cost imp pact of cons serving gre een/open sp pace to the ooverall
costs
of the sitte
design/d developmen nt project: Surprisingly,
S
natives are more cost eeffective
thann
exotics even
with a pro oject as com mplex as the Vernal Pools
on Interstaate
80. Beccause
nativees
are adapteed
to
the local environmen nt, their cost t, energy inp puts and envvironmental
iimpact
are rreduced
bothh
short term m and long term. t Althou ugh a grassland
ecosysttem,
vernal ppool
speciess
are low
growing and a don't ne eed mowing. . The casca ading drainagge
system shown
in the LAM article for
the pools s serve to slo ow and store e stormwater
without thee
need for neew
drainagee
systems noor
irrigation.
Exotics do o not slow or r store storm mwater and, tthey
requiree
massive ammounts
of
irrigation.
In addition n, exotics typ pically requir re fertilizer, hherbicides
aand
landscappe
managemment
such as pruning p and disease con ntrol. The California C nattives
of these
vernal poools
require no
environm mental or ma aintenance in nput.
Cost imp pact of cons serving gre een/open sp pace for stoormwater
maanagementt
over
tradition nal site design/site
dev velopment approaches
a
(grey infrastructure)?
? Significanttly
reduced costs (10% or greater savings).
Number of jobs cre eated: 5
Job hours
devoted to project:
Planning P and Design: 300 0
Construction:
C : 600
Annual A Maint tenance: 0
Other: O 9,000 (research an nd education n)
Perform mance Me easures
Stormwa ater reduction
perform mance analy ysis:
20%
Commun nity & economic
benef fits that hav ve resulted from the prroject:
Restoration R te echniques now n applied state-wide s
Pagg
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