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FEDERAL ENERGY REGULATORY COMMISSION
Washington,D.C.20426
OFFICE OF ENERGY PROJECTS
Project No. 2100-185--California
Feather River Hydroelectric Project
California Department of Water
Resources
August 14, 2018
Ms. Jennifer Norris
Field Supervisor
U.S. Fish and Wildlife Service
2800 Cottage Way Room W-2605
Sacramento, CA 95825
Subject: Request for concurrence under the Endangered Species Act
Dear Ms. Norris:
The purpose of this letter is to request U.S. Fish and Wildlife Service (FWS)
concurrence under section 7 of the Endangered Species Act (ESA) on the impacts that
resulted from the actions related to the failure of the Oroville Dam spillways and the
subsequent emergency response efforts. Oroville Dam is part of the Feather River
Hydroelectric Project No. 2100, located on the Feather River in Butte County, California.
A biological assessment is enclosed for your review.
In February 2017, abnormally heavy precipitation resulted in high flows in the
Feather River basin that caused extensive erosion and damage to the main spillway and
emergency spillway area at the Feather River Project's Oroville Dam. The licensee for
the facility, California Department of Water Resources (California DWR), first observed
major damage to the main spillway on February 7, 2017, which included a large area of
foundation erosion and concrete chute loss in the mid-section of the main spillway. Due
to high inflows into Lake Oroville (the project reservoir) and reduced outflow capacity on
the main spillway, Lake Oroville overtopped the adjacent emergency spillway on
February 11, 2017, causing back-cutting erosion below the emergency spillway. The
back-cutting erosion threatened the stability of the emergency spillway's crest structure.
As such, California DWR increased operation of the damaged main spillway to relieve
pressure on the emergency spillway, which led to the loss of the lower portion of the
main spillway chute and caused significant erosion under and adjacent to the main
spillway. Impacts were most severe in the Thermalito Diversion Pool immediately below
Project No. 2100-185 - 2 -
the spillways but turbidity and fluctuating flows also impacted the Feather River
extensively downstream beyond the fish barrier dam and other project works.
By letter dated March 31, 2017, the Commission designated California DWR as its
non-federal representative to conduct informal consultation with the FWS pursuant to
section 7 of the ESA. Since that time, California DWR and the FWS have regularly
consulted on various resources including the valley elderberry longhorn beetle and its
habitat.
During the initial emergency response activities, California DWR identified six
elderberry shrubs, the known habitat for the valley elderberry longhorn beetle, within or
near work areas by the main spillway. The areas were flagged with 25-foot buffer zones
and construction crews were instructed to avoid the plants as much as possible. Two of
the identified elderberry shrubs were located in areas that became necessary for active
construction near the main spillway in March and April 2017. It was determined that the
shrubs needed removal; and in both instances, California DWR contacted the FWS,
surveyed the plant for the number of stems, and presence or absence of valley elderberry
longhorn beetle exit holes. Subsequently, the plants were removed and transplanted to
suitable locations near the Thermalito Afterbay and the Oroville Wildlife Area.
California DWR has prepared a biological evaluation that analyzed the effects of
the emergency response efforts following the February 7, 2017 main spillway failure on
the valley elderberry longhorn beetle and its habitat.'
Several actions taken by California DWR had or may have had a potential effect
on federally-listed species and critical habitat, which included: 1) land and vegetation
clearing; 2) the construction of access roads, work pads, staging area, and spoil sites; 3)
land debris removal; 4) the installation and relocation of powerlines; and 5) other
miscellaneous support efforts.
The action area includes Lake Oroville upstream of the Oroville Dam; the main
spillway and the emergency spillway; the Thermalito Diversion Pool; and two elderberry
shrub transplant locations, one near the eastern extent of the Thermalito Afterbay and the
other within the northern extent of the Oroville Wildlife Area.
California DWR worked with the California Department of Fish and Wildlife to
relocate the two shrubs in locations that would not be affected by the emergency response
actions. The locations chosen are riparian habitats where known clumps of elderberry
shrubs exist. While there were direct impacts to the relocated elderberry shrubs
individually, staff finds that it is not likely that the valley elderberry longhorn beetle
1 See July 17, 2018 and supplemental filing dated August 1, 2018 (Accession Nos.
20180716-5081 and 20180801-5079, respectively).
Project No. 2100-185 - 3 -
species were affected given the isolation of the plants being located within a non-riparian
habitat, and the lack of exist holes. For the reasons addressed above, and outlined in
further detailed in the biological assessment, we have determined that the proposed
actions may have affected, but did not likely adversely affect the valley elderberry
longhorn beetle.
We request your concurrence on the above determination under your agency's
modified consultation procedure for emergencies. 50 C.F.R. § 402.05.
The Commission strongly encourages electronic filing of your response using the
Commission's eFiling system at http://www.ferc.gov/docsfiling/efiling.asp. For
assistance, please contact FERC Online Support at FERCOnlineSupport@ferc.gov, (866)
208-3676 (toll free), or (202) 502-8659 (TTY). In lieu of electronic filing, please send a
paper copy to:
Secretary
Federal Energy Regulatory Commission
888 First Street, NE
Washington, D.C. 20426
The first page of your filing should include docket number P-2100-185. Thank
you for your cooperation. If you have any questions concerning this matter, contact Ms.
Kxista Sakallaris at (202) 502-6302 or by email at krista.sakallaris(czferc.gov.
Sincerely,
Qt?$ed(44
Robert J. Fletcher
Chief, Land Resources Branch
Division of Hydropower Administration
and Compliance
cc: Mr. Ted Craddock
Department of Water Resources
P.O. Box 942836
Sacramento, CA 94236-0001
ENCLOSURE
Biological Assessment
Feather River Hydroelectric Project No. 2100-185
Prepared for:
U.S. Fish and Wildlife Service
2800 Cottage Way Room W-2605
Sacramento, CA 95825
Prepared by:
Federal Energy Regulatory Commission
August 14, 2018
Biological Assessment for Project No. 2100-185 - 1 -
1.0 BACKGROUND/HISTORY
The purpose of this terrestrial Biological Assessment (BA) is to address the effects
of the emergency response actions taken prior to and post spillway failure at the Lake
Oroville Dam for the Feather River Hydroelectric Project No. 2100, on Endangered
Species Act (ESA)-listed species, listed as endangered or threatened under the ESA, or
their designated critical habitat. The BA has the following objectives: 1) determine
whether federally threatened or endangered species managed by the U.S. Fish and
Wildlife Service (FWS) under the ESA, and which are known to exist within the action
area, were adversely affected by the response actions related to the spillway failures, and
2) determine if critical habitat was adversely modified by these actions.
In February 2017, abnormally heavy precipitation resulted in high flows in the
Feather River basin that caused extensive erosion and damage to the main spillway and
emergency spillway area at the Feather River Project's Oroville Dam. California DWR
first observed major damage to the main spillway on February 7, 2017, which included a
large area of foundation erosion and concrete chute loss in the mid-section of the main
spillway. Upon discovery of the main spillway damage, California DWR initiated
consultation with the Commission's Division of Dam Safety and Inspections and the
California Division of Safety of Dams to coordinate appropriate response actions. Due to
high inflows into Lake Oroville (the project reservoir), and reduced outflow capacity on
the main spillway, Lake Oroville overtopped the adjacent emergency ogee spillway on
February 11, 2017, and caused back-cutting erosion below the emergency spillway. The
back-cutting erosion threatened the stability of the emergency spillway's crest structure.
Unavoidable increased operation of the damaged main spillway led to the loss of the
lower portion of the main spillway chute and caused significant erosion under and
adjacent to the main spillway. Since that time, California DWR has implemented
numerous emergency actions including temporarily relocating transmission lines away
from the damaged main spillway, dredging in the diversion pool below the spillways,
removing sediment near the main spillway, establishing site access, and initiating
reconstruction of the main spillway and fortification of the emergency spillway.
By letter dated March 31, 2017, the Commission designated California DWR as its
non-federal representative to conduct informal consultation with the FWS pursuant to
section 7 of the ESA. Since that time, California DWR and the Commission, as
applicable, have conducted early coordination and pre-consultation through a series of
site visits, meetings, and phone conversations with the FWS and other relevant agencies:
Biological Assessment for Project No. 2100-185 - 2 -
Correspondence Specifically Related to the Valley Elderberry Longhorn Beetle
• March 28, 2017 - California DWR contacted the FWS regarding the need to
remove an elderberry shrub due to emergency work. Following discussion,
California DWR biologists examined the plant for exit holes and transplanted the
shrub to appropriate habitat near the Thermalito Afterbay.
• • April 13, 2017—California DWR contacted the FWS regarding emergency
removal of a second elderberry shrub. Following discussion, California DWR
biologists examined the plant for exit holes and transplanted the shrub to appropriate
habitat in the Oroville Wildlife Area.
• April 18, 2017 - Correspondence from FWS on April 18, 2017
acknowledging the emergency situation, that there was not sufficient time to get
conservation bank approvals, and that after the emergency situation was under
control, to contact the FWS for further coordination on long-term management of the
transplanted elderberry shrubs.
General Meetings and Consultation Correspondence
• March 2017 —June 2017: Twice weekly calls regarding environmental
coordination and updates. Participants included FWS, National Marine Fisheries
Services (NMFS), FERC, Federal Emergency Management Agency (FEMA), U.S.
Army Corps of Engineers (Corps), California Department of Fish and Wildlife
(California DFW), California Office of Emergency Services (California OES),
Central Valley Regional Water Quality Control Board (CVRWQCB), State Water
Resources Control Board (SWRCB), and California DWR.
• March 24, 2017: California DWR letter to FERC requesting to be
designated non-federal representative status for consultation under ESA Section 7
and the National Historic Preservation Act (NHPA) Section 106.
• March 31, 2017: FERC letter to the California State Historic Preservation
Officer(SHPO), FWS, and NMFS designating California DWR as non-federal
representative for ESA and NHPA.
• April 20, 2017: FERC letter to FEMA and Corps confirming FERC will be
acting as lead agency.
• May 18, 2017: FERC letter to FEMA and Corps formally designating
DWR as non-federal representative for consultation under the ESA and NHPA for
Emergency Recovery.
This BA, prepared by the Federal Energy Regulatory Commission, addresses the
action taken in compliance with section 7 of the ESA. Section 7 assures that, through
consultation (or conferencing for proposed species) with the FWS, federal actions do not
jeopardize the continued existence of any threatened, endangered or proposed species, or
result in the destruction or adverse modification of critical habitat.
Biological Assessment for Project No. 2100-185 - 3 -
The purpose of the action taken was to conduct emergency repair and remediation
actions after the Oroville spillway incident on February 7, 2017, to protect lives and
property downstream of the Lake Oroville main and emergency spillways. This BA
evaluates the direct and indirect effects to ESA listed terrestrial species that occurred
because of operation, construction, and maintenance activities needed to stabilize and
remediate the damaged facilities and infrastructure associated with the main and
emergency spillways.
2M DESCRIPTION OF THE ACTION & ACTION AREA
2.1 Action Area
The action area includes Lake Oroville upstream of the Oroville Dam; the main
spillway and the emergency spillway; the Thermalito Diversion Pool; and two elderberry
shrub transplant locations, one near the eastern extent of the Thermalito Afterbay and the
other within the northern extent of the Oroville Wildlife Area (OWA).
The action area is located on the eastern edge of the Sacramento Valley and the
lower foothills of the Sierra Nevada. Vegetation in this area varies with elevation
changes from the valley floor (elevation 100 feet above mean sea level at the lower end
of the Oroville Wildlife Area) to the foothill elevations (about 1,200 feet above mean sea
level).
The lands around Lake Oroville and the Thermalito Diversion Pool are composed
of open to dense woodland, forest, and chaparral communities consisting of mixed oak
woodlands, foothill pine/mixed oak woodlands, and oak/pine woodlands and chaparral.
In the lower elevations, around the Oroville Dam and the Thermalito Diversion Pool,
vegetation is mostly blue or mixed oak with varying proportions with foothill pine
woodland, open grasslands, and small proportions of chaparral. Primary woodland
species include interior and canyon live oaks, blue oak, and foothill pine. The open areas
within the woodlands consist of annual grassland species and chaparral vegetation, which
is characterized by evergreen, tough waxy leaves including whiteleaf manzanita,
buckbrush, toyon, and scrub oak.
2.2 Initial Response
The initial response period included the actions that California DWR implemented
to respond to the unanticipated main spillway failure and erosion of the emergency
spillways. The response period spanned from February 7 to May 19, 2017 and includes
California DWR's efforts to: stabilize the main spillway; prepare for use of the
Biological Assessment for Project No. 2100-185 - 4 -
emergency spillway; temporarily relocate transmission lines; dredge eroded material
from the Thermalito Diversion Pool; manage inflow to the project; construct access
roads; and implement other supporting activities.
2.3 Actions Potentially Affecting Terrestrial ESA Species Listed As
Endangered Or Threatened, Or Their Designated Critical Habitat
Vegetation Clearing and Grubbing
Vegetation clearing and grubbing occurred throughout the emergency incident.
During the response phase, vegetation was cleared to:
• prevent large amounts of vegetated debris from falling into the
Thermalito Diversion Pool below the Emergency Spillway;
• install shoofly transmission lines at the upper spillway;
• construct/improve access roads, work pads and staging areas;
• facilitate land-based debris removal from the damaged main
Spillway;
• clear and erect concrete production facilities;
• prepare barge landings and spoil sites for debris removal within the
Thermalito Diversion Pool;
• prepare the PG&E and California DWR right of way to realign the
compromised 230kV powerlines; and
• install fencing to prevent cattle from entering the Project site.
Response Actions for the Reconstruction of the Main Spillway
The erosion of the hillside by the failure of the main spillway created unstable
conditions posing a danger to construction personnel on the left side of the main spillway.
Because the hillside is composed of bedrock, blasting of the hillside was ultimately
necessary to cut back the unstable slopes. During the various flow outages (between
February 2017 to May 2017), temporary access points were constructed to allow
California DWR access to inspect the chute and perform stabilization activities.
Shotcrete was placed under the remaining slabs on the upper chute to help prevent further
erosion of the rock under the slabs; coring of the concrete chute and the underlying
bedrock commenced to better understand the condition of the rock; and crews began
anchoring the remaining upper chute slabs to the underlying bedrock.
The objective of the activity was to get systems in place by November 1, 2017 to
accommodate flows from the upcoming 2017/2018 winter storms.
Biological Assessment for Project No. 2100-185 - 5 -
Response Actions for the Reconstruction of the Emergency Spillway
During the emergency response in February 2017, when the flows over the
emergency spillway weirs were stopped and the water surface elevation of Lake Oroville
was reduced, emergency armoring of the hillside below the weirs commenced.
California DWR cut new access roads across the hillside to replace the roads that were
washed out and to access all areas of the hillside; large diameter rock was placed into
scour holes using helicopters; sections of the hillside were graded and excavated to create
benches; approximately 107,000 cubic yards of concrete was placed on the hillside
immediately downstream of the weirs to prevent additional erosion should the water
surface elevation increase and the emergency spillway be forced into operation again;
staging areas and work pads were created; and additional grubbing and tree removal
continued adjacent to the main spillway. Soon after, a temporary"shoofly" alignment for
high voltage power lines was constructed on the Emergency Spillway hillside, above the
original 230kV alignment.
3.0 LISTED SPECIES & CRITICAL HABITAT IN THE ACTION AREA
3.1 Listed Species And Critical Habitat In The Action Area
California DWR includes a list of the federally-listed threatened and endangered
species that may occur in the action area as part of its amendment application for the
emergency response and recovery activities as well as part of its biological evaluation for
this emergency consultation. This list was compiled using information from the
relicensing proceeding, and supplemented with data from the California Natural Diversity
Database and from a September 2017 search of the FWS' online Information for
Planning and Consultation database (IPAC). Commission staff accessed the FWS' IPAC
database on August 1, 2018, and did not find any additional species known, or with the
potential, to occur within the project area. Table 6 below provides a list of the federally-
listed species that may occur in the proposed project boundary and those with identified
critical habitats.
Species Potentially Within the Action Area
Common Name Scientific Name Federal Status
Birds
Southern Bald Eagle Haliaeetus leucocephalus Delisted
Yellow-Billed Cuckoo2 Coccyzus americanus Threatened
z Designated critical habitat is located in the project area.
Biological Assessment for Project No. 2100-185 - 6 -
Common Name Scientific Name Federal Status
Least Bell's Vireo Vireo bellii pusillus Endangered
Reptiles
Giant Garter Snake Thamnophis gigas Threatened
Amphibians
California Red-Legged Frog3 Rana draytonii Threatened
California Tiger Salamander Ambystoma californiense Threatened
Sierra Nevada Yellow-Legged Frog Rana sierra Endangered
Fish
Delta Smelt Hypomesus transpacificus Threatened
California Central Valley Distinct Oncorhynchus mykiss Threatened
Population Segment (DPS)
Steelhead
Central Valley DPS Spring-Run Oncorhynchus tshawytscha Threatened
Chinook Salmon
Southern DPS North American Acipenser medirostris Threatened
Green Sturgeon
Insects
Valley Elderberry Longhorn Beetle Desmocerus californicus Threatened
dimorphus
Crustaceans
Conservancy Fairy Shrimp Branchinecta conservatio Endangered
Vernal Pool Fairy Shrimp Branchinecta lynchi Threatened
Vernal Pool Tadpole Shrimp Lepidurus packardi Endangered
Flowering Plants
Butte County Meadowfoam Limnanthes floccosa ssp. Endangered
Californica
Green's Tuctoria Tuctoria greenei Endangered
Hairy Orcutt Grass Orcuttia pilosa Endangered
Hoover's Spurge Chamaesyce hooveri Threatened
Layne's Ragwort Senecio layneae Threatened
Slender Orcutt Grass Orcuttia tenuis Threatened
Hartweg's golden sunburst Pseudobahia bahiifolia Endangered
Pine Hill Flannelbush Fremontodendron decumbens Endangered
3 Designated critical habitat is located in the project area.
Biological Assessment for Project No. 2100-185 - 7 -
3.2 Federally-Listed Species Potentially Affected By The Response And
Recover Actions
Habitat assessments, survey data, and occurrence records indicate that the valley
elderberry longhorn beetle has the potential to occur within the action area and may have
been affected by the response actions. Therefore, this is the only species that is analyzed
in detail in this document.
3.2.1 Species Considered But Excluded From Assessment
Based on the action area and the scale of activities, it has been determined that the
species identified below will not be impacted by the response and recovery actions.
Reasoning for the exclusion of these species from this BA is identified and these species
will not be discussed further in this document.
• The action area does not contain vernal pools or designated critical habitat for
Conservancy fairy shrimp, vernal pool fairy shrimp, vernal pool tadpole
shrimp, California tiger salamander, Butte County meadowfoam, Greene's
tuctoria, Hairy Orcutt grass, Hoover's spurge, or Hartweg's golden sunburst.
• The action area does not contain serpentine or gabbro derived soils which
have been identified as the habitat for Layne's ragwort and Pine Hill
flannelbush.
• The action area does not contain large swaths of mature riparian trees with
associated understory, which have been identified as appropriate habitat for
Yellow-billed Cuckoo.
• The 2007 FWS Biological Opinion issued for the Oroville Facilities
Relicensing Project (Project No. 2100), Butte County, California(FWS 2007)
states that although suitable habitat for California red-legged frog exists
within the project boundary and in the North Fork drainage upstream from the
Oroville Dam, this species is not currently known to occur within the area.
• The action area is located outside the elevational range which has been
identified as suitable for mountain yellow-legged frog.
• The action area does not contain or affect aquatic features identified as
suitable for supporting giant garter snake, nor does the action area include
areas within 200 feet of suitable aquatic features which may be considered
upland habitat for giant garter snake.
• Southern Bald Eagle is known to occur within the action area; however, it is
currently delisted under the federal ESA. As such, the southern bald eagle
will not be evaluated in this BA. Impacts to Southern Bald Eagle have been
Biological Assessment for Project No. 2100-185 - 8 -
addressed through a separate consultation under the Migratory Bird Treaty
Act and the Bald and Golden Eagle Protection Act.
4.0 ENVIRONMENTAL BASELINE CONDITIONS
The valley elderberry longhorn beetle was listed as a threatened species on
August 8, 1980, and if afforded full protection under the federal ESA.' The current range
of the valley elderberry longhorn beetle extends throughout the Central Valley from
approximately Shasta County in the north to Fresno County in the south, and includes the
valley floor and lower foothills. Valley elderberry longhorn beetle habitat consists of
elderberry thickets located in riparian woodlands, oak woodlands, or grasslands. Adult
valley elderberry longhorn beetles deposit their eggs in the bark of living elderberry
plants and larvae bore into the pith of stems. The beetles' use of elderberries is not
readily apparent; often the only exterior evidence is an exit-hole created by the larva just
prior to pupation. A variety of branch sizes are used for larval development and
pupation; although, stems 2-4 inches in diameter at the exit hole have been reported to be
used most often. Infrequently, exit holes have been found in smaller branches less than
1.5 inches in diameter, but generally not in branches less than 1.0 inch in diameter. Thus,
larvae appear to be distributed primarily in large, mature plants with stems greater than
1.0 inch in diameter near ground level.
At the time of relicensing, California DWR mapped and surveyed elderberry
shrubs using the FWS protocol. Survey results found that approximately 95 acres of
valley elderberry shrubs were delineated within the project boundary, with 0.402 acre
around Lake Oroville, 2.255 acres in the area downstream from the Oroville Dam and
north of Highway 162, and 91.831 acres in the OWA south of Highway 162 and Larkin
Road. Forty-five elderberry shrub stems greater than 1 inch in diameter(preferred size of
the valley elderberry longhorn beetle) were mapped along the Feather River corridor
between Oroville Dam and the Fish Barrier Pool and along the Thermalito Power Canal,
elderberry shrubs with stems greater than 5 inches in diameter in high density were
located along the levees within the portion of the OWA bordering the Feather River.
5.0 EFFECTS OF THE ACTION
During the initial emergency response activities, California DWR biologists
surveyed the project area for elderberry shrubs suitable for valley elderberry longhorn
beetle habitat. On March 21, 2017, six elderberry shrubs were identified within the
action area (i.e., two at spillway left, one near Hyatt, one along Burma Road, and two
4 See Federal Register 45: 52803-52807.
Biological Assessment for Project No. 2100-185 - 9 -
near the vicinity of Spoil Pile 3). The shrubs were flagged with 25-foot buffer zones and
construction crews were instructed to avoid the plants as much as possible.
California DWR states it implemented best management practices, to the extent
feasible, prior to and during construction activities to reduce potential impacts on the
environment. The following list includes implemented best management practices which
may have helped to minimize adverse effects on valley elderberry longhorn beetle:
• Full time environmental monitoring and pre-project surveys
• Onsite weekly environmental awareness training for new personnel
• Implementation of site-specific speed limits (typically 15 miles per hour) unless
otherwise designated.
• Preservation of existing vegetation where feasible (e.g. retaining riparian
vegetation as much as possible)
• Clearly delineated exclusionary areas for environmentally sensitive sites
On March 28, 2018, California DWR began to clear areas for emergency access
and staging to repair the damaged main spillway. California DWR informed the FWS
that one of the six previously identified shrubs was located in an area to be used at the
spillway left as a helipad. The 1-inch stemmed elderberry shrub did not have evidence of
exit holes, but needed to be relocated. California DFW removed the elderberry shrub
from this location and transplanted it to a location near the Thermalito Afterbay on
March 29, 2017. This location was chosen due to the existence of elderberry shrubs in
the area, California DWR fee ownership of the property, and because the area is managed
by the California DFW.
On April 13, 2017, California DWR contacted the FWS concerning a second
identified elderberry shrub found within the spillway left area that required transplanting.
The FWS responded on April 18, 2018, acknowledging the emergency situation at the
project and requesting that the California DWR contact them again to coordinate the
long-term management of the transplanted elderberry shrubs. The spillway left shrub
was relocated to the OWA to an area in proximity to existing elderberry shrubs.
California DWR, after consultation with the FWS on March 28, 2017 and
April 13, 2017, implemented the following FWS recommendations during the removal of
the two elderberry plants:
• The plants were surveyed for the presence of exit holes and the stem count
and size were recorded.
• Appropriate for relocating the plants was identified nearby but outside of the
Biological Assessment for Project No. 2100-185 - 10 -
emergency action area.
• The plants were removed with as much of the roots intact and transplanted
immediately.
Both relocated plants are being monitored and are known to have survived through
the 2017 summer months. The remaining four identified elderberry shrubs are located
within non-riparian areas, are not located near other elderberry shrubs, and none
displayed exist holes.
Where avoidance and minimization measures outlined in its amendment
application are not possible for any future valley elderberry shrubs, California DWR
states it is developing an Elderberry Relocation Plan (utilizing comments received from
the FWS on November 30, 2017) to move elderberry shrubs to an already identified
mitigation site. The Relocation Plan would include planting additional elderberry shrubs
and associated species utilizing the FWS's most recent.Framework for Assessing Impacts
to the Valley Elderberry Longhorn Beetle from 2017.5 California DWR states it would
monitor the plants for up to five years using the defined success criteria and
implementation measures, should it not meet success criteria.
7.0 CONCLUSION
California DWR worked with the California DFW to relocate the two shrubs
immediately and to locations that would not be affected by the actions taken. The
locations chosen are existing riparian habitats where known clumps of elderberry shrubs
exist. While there were direct impacts to the relocated elderberry shrubs individually at
the time of transplantation, it is not likely that the valley elderberry longhorn beetle
species were affected given the isolation of the relocated plants, their location in a non-
riparian habitat, and the lack of exist holes.
For the reasons addressed above, we have determined that the proposed action
may have affected, but did not likely adversely affect the valley elderberry longhorn
beetle. The actions taken by California DWR to consult with the FWS, implement best
management practices while performing the emergency activities, examine the affected
shrubs for exit holes, and relocated the affected valley elderberry shrubs to more suitable
habitat, likely mitigated any potential harm to the valley elderberry beetle.
5 See https://www.fws.gov/sacramento/documents/VELB Framework.pdf