Riverside City Council
April 21, 2026

Appendix E
Focused Surveys for Rare Plants

525 B Street, Suite 1700, San Diego, CA 92101 USA +1.858.578.8964 +1.844.545.2301 fax icf.com

December 2, 2022
Matt Romero
Senior Associate
Studio MLA
251 South Mission Road
Los Angeles, CA 90033
Subject: Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
Dear Mr. Romero:

This report documents the findings of a focused survey effort to determine the presence or absence of sensitive and rare plant species in support of the Riverside Gateway Project (Project) proposed by the City of Riverside Parks, Recreation, and Community Services Department (PRCSD) in the City of Riverside (City), Riverside County, California. This effort was performed under the survey guidelines of the Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP), as implemented by the City. Portions of the Project fall within the MSHCP narrow-endemic plant survey area. ICF biologists performed focused surveys in April 2022.

Project Description
The Project involves a multidisciplinary effort for the planning, design, engineering, and associated community outreach and environmental compliance for California Environmental Quality Act (CEQA) review for nine identified park sites in the City, in Riverside County, California. The Santa Ana River Trail, adjacent to the Santa Ana River, is completed throughout its length in the City. After completing the 2018 update to the Citywide Parks System Master Plan, the PRCSD proposes to complete planning and design for improvements and enhancement to existing and proposed park areas located along the Santa Ana River and the 4.7 miles of the Santa Ana River Parkway from Fairmount Park to Martha McLean Anza Narrows Park. These park sites were initially identified as part of the planning process in development of the Santa Ana River Parkway and Open Space Plan completed in 2018. Development of these park sites would comply with the City’s overarching goal to “put the river back into Riverside” by providing diverse recreational and educational opportunities, access to open space, and restoration of natural habitat for people and wildlife.

The entire 11-mile northern edge of the City fronts the Santa Ana River. In Riverside, the Santa Ana River is a juxtaposition of a natural and scenic riparian corridor running through an urban setting.

The Santa Ana River is a vital resource in the City, and it supports several important functions for the City, including providing natural habitat that serves wildlife, recharging the groundwater basin that supplies water to residences and businesses, and providing recreational opportunities to Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

connect people to natural resources. There is also a need to provide no-cost and low-cost parks and recreational resources, open space access, and active transportation resources to support the disadvantaged communities identified near the project area in the City.

Conceptual improvement and engagement opportunities have been identified for each of the nine individual park sites, including, but not limited to, habitat conservation areas, woodland restoration, parking lots, an amphitheater, restroom and drinking water facilities, nature trails, active recreation and exercise stations, passive park amenities, camping, picnic areas, community garden and incubator farm, vista points, public art, interpretive and wayfinding signage, landscaping, irrigation, lighting, shade enhancements, equestrian facilities, and bicycle repair station and bike racks, among others. The nine park sites in the City are (1) Camp Evans; (2) Loring Park; (3) Carlson Park; (4) St.

Francis Falls; (5) Santa Ana River Greenway; (6) Tequesquite Extension North; (7) Tequesquite Extension South; (8) Martha McLean Anza Narrows Park; and (9) Jurupa Avenue Trailhead, shown on Figure 2 (Appendix A).

The Project is a forward-looking proposal to recover, reconceive and re-engage with the Santa Ana River to deliver ecological, recreational, cultural, social, and economic value to the City’s inhabitants.

The Project is funded by a grant provided by the State Coastal Conservancy, a California state agency established in 1976 to protect and improve natural lands and waterways, help people get to and enjoy the outdoors, and sustain local economies along California’s coast. The State Coastal Conservancy acts with others to protect, restore, and increase public access to California’s coast, ocean, coastal watersheds, and the San Francisco Bay Area. Its vision is of a beautiful, restored, and accessible coast for current and future generations of Californians.

Location
The project is along the southern side of the Santa Ana River floodplain in the City, in Riverside County, California, as shown on Figure 2 (Appendix A). The Project occurs within the Cities of Riverside/Norco Area Plan and Jurupa Area Plan of the MSHCP. Portions of the Anza Creek/Old Ranch Creek and Lower Hole Creek sites are within the MSHCP Area Plan Subunits (SU) SU1-Santa Ana River South, Cities of Riverside/Norco Area Plan and SU1-Santa Ana River North, Jurupa Area Plan within Criteria Cells 187, 443, 534, 617, and 621 (Figure 2). Also shown on Figure 2, the Project overlaps with MSHCP Public/Quasi-Public Conserved Lands, which comprise a subset of the MSHCP Conservation Area identified for open space value and contribute to the conservation of Covered Species. The project sites are also within the MSHCP Existing Core A and Core Linkage area. Portions of the Project occur within the MSHCP Narrow Endemic Plant Species Survey Area for San Diego ambrosia (Ambrosia pumila), Brand’s star phacelia (Phacelia stellaris), and San Miguel savory (Clinopodium chandleri).

Survey Areas
The rare plant survey areas include all portions of the project limits and 50-foot buffer for six of the nine park sites: Camp Evans, Loring Park, Santa Ana River Greenway, Tequesquite Extension North, Tequesquite Extension South, and Jurupa Avenue Trailhead. The remaining three park sites (Carlson Park, Martha McLean Anza Narrows Park, and St. Francis Falls), consist primarily of ornamental Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

landscape and development and were determined to have no suitable habitat to support rare plant species known from the region; therefore, focus surveys were not conducted at those three locations.

The survey area includes a variety of natural vegetation communities, many of which are riparian shrublands, forests and woodlands as well as ruderal and developed land covers. Descriptions of each vegetation community found within the survey areas are provided in the vegetation section below.

Vegetation
The vegetation communities identified in the survey areas are described below and illustrated on Figures 3a through 3d in Attachment A. The vegetation communities are classified using the plant community definitions provided by Preliminary Descriptions of Terrestrial Natural Communities of California (Holland 1986) and revised by Oberbauer et al (2008). However, vegetation communities encountered that were not accurately described by the Holland classification system were characterized by the California Native Plant Society (CNPS) Manual California of Vegetation (MCVCNPS 2022).

Arrow Weed Scrub
Arrow weed scrub is a dense riparian shrub community dominated or co-dominated by arrow weed (Pluchea sericea), with associated species present, such as mulefat (Baccharis salicifolia), sandbar willow (Salix exigua), quail bush (Atriplex lentiformis), coyote bush (Baccharis pilularis), and arroyo willow (Salix lasiolepis). The shrub cover is variable, typically less than 3 meters in height, and emergent trees may be present at low cover. Within the project area, this community is characterized by dense, monotypic stands of arrow weed. The understory is typically bare to sparsely populated with nonnative grasses and mustards; however, saltgrass (Distichlis spicata) dominates the herbaceous portions of this community within the Santa Ana River Greenway.

Mulefat Scrub
Mulefat scrub is typically a dense, riparian shrub community dominated or co-dominated by mulefat. Within the project area, this community is strongly dominated by mulefat and varied from open canopy between dense patches of mulefat to densely closed shrub cover reaching heights of 3 meters. Associated species found in this community include arroyo willow, mugwort (Artemisia douglasiana), wild tarragon (Artemisia dracunculus), toyon (Heteromeles arbutifolia), and elderberry (Sambucus nigra). Disturbed mulefat within the project area has a generally more-open canopy and a heavily weedy herbaceous cover between patches of mulefat and other native shrubs and trees.

Southern Arroyo Willow Riparian Forest
Southern arroyo willow riparian forest is a dense growth of broadleaf, winter-deciduous riparian species dominated or co-dominated by arroyo willow. Within the project area, arroyo willow is the dominant species, but associated shrubs and trees, such as sandbar willow, mulefat, red willow Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

(Salix laevigata), and elderberry, are present. The tall shrub canopy is intermittent to closed, reaching heights of 4 to 6 meters. The low shrub layer is predominantly sparse and includes mugwort and wild tarragon. The herbaceous understory is also predominantly sparse and composed of ragweeds (Ambrosia psilostachya/acanthicarpa), nonnative grasses and mustards. This community only occurs within a small portion of the Santa Ana River Greenway project area.

Southern Coastal Live Oak Riparian Forest
Southern live oak riparian forest is a stream or lake associated community dominated by dense stands of coast live oak. It is found above the willow riparian zone, and the understory is usually denser than that found under oak woodland. This community within the project area is characterized by coast live oak (Quercus agrifolia) being dominant or co-dominant with California black walnut (Juglans californica; California Native Plant Society [CNPS] California Rare Plant Rank [CRPR] 4.2) within the tree canopy and can reach heights of 8 meters. California black walnut was observed within this vegetation community in the Camp Evans project area (Figure 4b, Appendix A).

Associated small trees and tall shrubs, such as elderberry, arroyo willow, mulefat, poison oak (Toxicodendron diversilobum), and toyon, are also present within this community, as well as nonnative tree species, such as edible ficus (Ficus carica), mulberry (Morus alba), giant reed (Arundo donax), Mexican fan palm (Washingtonia robusta), and Tree-of-Heaven (Ailanthus altissima).

Nonnative trees are typically present at low cover, but contributed to greater cover within portions of this community; furthermore, the shrub layer may be absent or sparse due to the high level of disturbance within the understory for portions of this community. The herbaceous layer, where present, is sparse and composed primarily of native ragweed, dwarf nettle (Urtica urens), and nonnative grasses and mustards.

Southern Cottonwood–Willow Riparian Forest
Southern cottonwood–willow riparian forest is a dense, multi-canopy growth of broadleaf, winter- deciduous riparian trees and shrub species dominated or co-dominated by Fremont cottonwood (Populus fremontii) within the tree layer. Within the project area, this community is often a highly disturbed community consisting of a codominant alliance of Fremont cottonwood and Goodding’s willow (Salix gooddingii) that can reach heights of up to 20 meters. Associated native tree species within this vegetation community include species such as red willow, coast live oak, and arroyo willow. The shrub layer is intermittent to continuous and includes species such as southern California grape (Vitis girdiana), mugwort, mulefat, sandbar willow, poison oak, California blackberry (Rubus ursinus), and wild tarragon. The herbaceous understory is composed primarily of native ragweed, yerba mansa (Anemopsis californica), stinging nettle (Urtica dioica), and nonnative grasses and mustards. Due to the urban setting and past frequent fire disturbance, this community has a considerable cover of nonnative and invasive forbs and grasses, as well as perennial exotic trees and shrubs, which includes species such as Mexican fan palm, salt cedar (Tamarix ramosissima), giant reed, shamel ash (Fraxinus uhdai), pecan (Carya illinoinensis), and eucalyptus trees (Eucalyptus spp.). Furthermore, the shrub layer may be absent or sparse due to the high level of disturbance, such as in the Tequesquite South Extension portion of the project area, which lacks a developed understory of shrubs and was dominated by nonnative grasses and ruderal forbs in the herbaceous layer.

Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Southern Riparian Forest
Southern riparian forest is similar in structure to southern cottonwood–willow riparian forest but lacks cottonwoods within the tall tree canopy. This community is restricted to the Jurupa Avenue Trailhead portion of the project area. Southern riparian forest is highly disturbed within the project area, and willow species are co-dominant with nonnative trees, such as shamel ash, mulberry, and Mexican fan palm. The shrub layer is intermittent to continuous and includes species such as arroyo willow, mulefat, sandbar willow, and poison oak, as well as nonnative species, such as edible ficus and tobacco tree (Nicotiana glauca). The herbaceous understory is composed primarily of ragweed, stinging nettle, and nonnative grasses and mustards.

Southern Riparian Woodland
Southern riparian woodland is a moderately dense riparian woodland typically dominated by small trees or shrubs, with scattered taller riparian trees. Within the project area, this community has an open-to-intermittent tree canopy, and the understory is less developed compared to a riparian forest. Within the Camp Evans portion of the project area, Goodding’s willow is the dominant tree species and reaches heights of 8 meters. The shrub layer is absent or nearly so, and the herbaceous layer is composed of nonnative ruderal mustards and thistles. Within the Tequesquite North Extension, this community is dominated by black elderberry and reaches heights of 4 meters, with scattered mulefat in the shrub canopy and an herbaceous layer composed of nonnative ruderal species.

Nonnative Riparian (Mexican Fan Palm Dominated)
This nonnative riparian community is dominated by Mexican fan palm. Within the project area, willows, cottonwoods, and native riparian shrubs may occur, but at very low cover within this community, or nonnative palms may occur as monospecific stands. These nonnative species are considered invasive, and cumulation of dead fronds on the ground can create a fire hazard. The herbaceous layer, where present, consists of nonnative mustards and grasses.

Nonnative Riparian (Tree-of-Heaven Dominated)
This nonnative riparian community is dominated by tree-of-heaven, a fast-growing, invasive tree whose roots emit an allelopathic poison to deter growth of neighboring trees and can form clonal monocultural stands by lateral root sprouting. Within the project area, this community is strongly dominated by Tree-of-Heaven, with associated trees, such as willows, cottonwoods, and other nonnative trees, present at very low cover or occurs as a monospecific stand of trees. The shrub layer if present, consists of scattered native and nonnative species at very low cover, and the herbaceous layer is composed of ruderal weedy species or is bare.

Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Disturbed Riparian (Arundo Dominated)
This nonnative riparian community is dominated by giant reed. A relative of bamboo and other grasses, giant reed is a tall, robust perennial that forms dense stands in riparian areas. Giant reed occurs as a small, dense, monospecific patch within the Jurupa Trailhead portion of the project area.

Tamarisk Scrub
Tamarisk scrub is a nonnative riparian shrub or tree community characterized by salt cedar or other Tamarix spp. being strongly dominant within the tall shrub or tree canopy. Tamarisk scrub occurs within the Camp Evans portion of the project area as a dense patch of athel trees (Tamarix aphylla) that reach 5 meters in height. This stand of athel trees is disconnected from the larger riparian corridor within the Camp Evans project area. The herbaceous layer is absent to sparse and composed of nonnative mustards and grasses.

Southern Riparian Scrub
Southern Riparian Scrub occurs along seasonally and temporarily flooded streams, levee banks, and other riparian or riparian ecotonal areas. It is typically dominated by small trees or shrubs and generally lacks taller riparian trees. Within the project area, this vegetation community is largely dominated by southern California grape, a perennial shrub that climbs on other plants and covers the ground with twisted, woody vines, trailing stems, and tendrils. Southern California grape dominated shrubland is associated with disturbed riparian habitats within the project area where it forms thick mats over scattered riparian shrubs and trees. The herbaceous layer is not present due to the dense, mat-like cover of the grape vines and leaves. Within the Camp Evans portion of the project area, a small thicket of western indigo bush (Amorpha fruticosa) associated with a small drainage is also defined as part of this riparian vegetation community.

Meadows and Marshes
Alkali Meadow
Alkali meadow is a dense-to-open growth of perennial grasses and sedges, composed of relatively few species, typically occurs in areas where the water table is shallow, and soils are alkaline. Within the project area, alkali meadows are strongly dominated by dense flats of saltgrass. Scattered native shrubs, such as arrow weed and mulefat, are present, but a very low cover, and associated annuals are primarily composed of nonnative grasses and ruderal forbs.

Uplands
Riversidean Alluvial Fan Sage Scrub
Riversidean alluvial fan sage scrub is a Mediterranean shrubland type that occurs in washes and on gently sloping alluvial fans throughout many drainages within western Riverside County. This community is a subset of coastal sage scrub composed predominantly of drought-deciduous, soft- Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

leaved shrubs. Scalebroom (Lepidospartum squamatum) is generally regarded as a primary indicator of this community, with associated species, such as white sage (Salvia apiana), redberry (Rhamnus crocea), Spanish bayonet (Yucca whipplei), California croton (Croton californicus), cholla (Opuntia spp.), wild tarragon, yerba santa (Eriodictyon trichocalyx), mulefat, and mountain-mahogany (Cercocarpus betuloides). Within the project area, this community is dominated by California croton and/or yerba santa that reach heights of 2.5 meters. The herbaceous layer is sparsely composed of native annual herbs, such as California sun cup (Camissoniopsis bistora), common phacelia (Phacelia distans), ragweeds, and Thurber eriogonum (Eriogonum therberi). Federally and state-listed Santa Ana River woolly-star (Eriastrum densifolium ssp. sanctorum; CNPS CRPR 1B.1) was observed within this vegetation community within the Tequesquite North Extension of the project area (Appendix A, Figure 4a). Santa Ana River woolly star are endemic to alluvial scrub vegetation in western Riverside County..

Eucalyptus Woodland
This nonnative woodland community is characterized by one or several different eucalyptus trees being dominant within the tree canopy. Within the project area, eucalyptus trees typically form monospecific stands with a continuous tree canopy reaching heights up to 40 meters. Within the project area this community has little to no shrub layer, and the herbaceous layer, where present, is sparse and primarily composed of nonnative grasses.

Fourwing Saltbush Scrub
Saltbush scrub is typically characterized as xerophytic vegetation community dominated by Atriplex spp. and generally associated with alkaline or saline conditions in arid environments. Fourwing saltbush is a type of saltbush scrub that can also exist as an early successional plant community within disturbed areas throughout southern California. Within the project area, this community is associated with disturbed slopes and dominated by fourwing saltbush (Atrixplex canescens), with little-to-no shrub diversity. The shrub canopy is open to intermittent and reaches heights of 1.5 meters, and the herbaceous layer is composed of nonnative grasses and mustards. Fourwing saltbush scrub is an MCV-defined vegetation community because this classification best characterizes the structure and composition of this vegetation community within the project area.

Nonnative Grassland
Nonnative grassland is an annual community dominated or co-dominated by any of several nonnative wild oat (Avena spp.) and/or annual brome (Bromus spp.) grass species and typically forms a continuous herbaceous cover that may reach heights of 1 meter. Within the project area, shrubs, such as California buckwheat (Eriogonum fasciculatum) and broom baccharis (Baccharis sarothroides), and native forbs, such as fiddleneck (Amsinckia spp.) and common phacelia, are present at very low cover. Invasive species, such as tobacco tree, Russian thistle (Salsola tragus), and ruderal upland mustards, are also common within this community. Within the project area, this community occurs on hillsides and terraces outside of riparian habitat.

Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Riversidian Coastal Sage Scrub
Riversidian sage scrub differentiates interior cismontane coastal sage scrub type from coastal forms and is the typical coastal sage type encountered in western Riverside County. This habitat type is the most xeric expression of coastal sage scrub and dominated by a characteristic suite of low-statured, aromatic, drought-deciduous shrubs and subshrub species. Characteristic species within this community include California sagebrush (Artemisia californica), California buckwheat, laurel sumac (Malosma laurina), California encelia (Encelia californica), and several species of sage (Salvia spp.).

Within the Santa Ana River Greenway project area, this community is co-dominated by brittlebush and California sagebrush and also includes species found commonly in the desert, such as sweet bush (Bebbia juncea) and desert brickellia (Brickellia desertorum). Within the Jurupa Trailhead project area, this community is dominated by California buckwheat. Within both project areas, the shrub canopy is closed to intermittent and reaches heights of up to 1.25 meters. The herbaceous layer is primarily composed of nonnative grasses and mustards.

Ruderal Upland Mustards And Forbs
This ruderal herbaceous vegetation community is characterized by various invasive, annual, or biennial mustards, such as black mustard (Brassica nigra), small-podded mustard (Hirschfeldia incana), or radish (Raphanus sativus), and/or star thistle (Centaurea solstitialis/melitensis) or similar nonnative forbs being dominant (CNPS 2022). Within the project area, this community is typically dominated by small-podded mustard that forms a continuous herbaceous cover that reaches heights of 1 meter. Native forbs, such as fiddleneck and Phacelia spp., and shrubs, such as broom baccharis, mulefat, and California buckwheat, are present within this community, but at very low cover.

Ruderal upland mustards and forbs is an MCV vegetation classification and would be considered a disturbed habitat according to the Holland classification.

Russian Thistle–Five Hook Bassia Fields
This ruderal herbaceous vegetation community is co-dominated by Russian thistle and five hook bassia fields (Bassia hyssopifolia). Scattered native trees and shrubs, such as four-wing saltbush and elderberry, are present at very low cover. Russian Thistle–Five Hook Bassia Fields is a CNPS MCV vegetation classification and would be considered a disturbed habitat according to the Holland classification.

Nonnative Woodland
Nonnative woodland comprises ornamental trees, such as pepper trees (Schinus spp.), ornamental pine trees (Pinus spp.), or Ngaio groves (Myoporum laetum) or other nonnative species. The tree canopy is open to continuous and may reach heights of 18 meters or taller. The shrub layer is sparse to intermittent, and the herbaceous layer is simple to diverse. Within the project area, this community is strongly dominated by pepper trees, with little diversity. The shrub layer is sparse to bare, and the herbaceous layer is sparsely composed of nonnative grasses and mustards or is bare.

Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Other Land Cover Types
Developed
Areas mapped as developed include paved roadways, buildings, residential housing, commercial development, golf courses, and parks, as well as landscaped areas.

Disturbed
Areas mapped as disturbed are mostly devoid of vegetation and have evidence of frequent human disturbance, such as waste areas, as well as dirt roads and areas of ground disturbance. These areas may have very sparse vegetation, typically composed of nonnative ruderal forbs or nonnative grassland species, but the cover is much reduced compared to areas mapped as ruderal vegetation types or nonnative grassland.

Open Water
Areas mapped as open water are free of vegetation and consist of typically year-round standing bodies of water. Open water exists as a small impoundment of water at the outlet end of a large box culvert at the Jurupa Avenue Trailhead project area.

Survey Methods
ICF lead botanist Shawn Johnston conducted focused surveys, assisted by ICF botanists Brian Cropper, Cole Sutter, and Jean-Luc Brullot, on April 5, 6, and 7, 2022. Resumes of the surveying botanists are provided in Attachment B.

Table 1. Rare Plant Survey Dates, Personnel, and Weather Conditions Date Time Personnel Conditions
4/6/22 0700–1530 Shawn Johnston
Cole Sutter
70–96°F, winds 1–10 mph, clear, good visibility
4/7/22 0700–1545 Shawn Johnston
Cole Sutter
Brian Cropper
72–98°F, winds 1–12 mph, clear, good visibility
4/8/22 0630–1300 Shawn Johnston
Jean-Luc Brullot
76–95°F, winds 1–6 mph, clear, good visibility
°F = degrees Fahrenheit; mph = miles per hour.

Prior to field surveys, ICF biologists conducted a literature and database review to identify the special-status plant species known to occur in the vicinity of the project area. Sensitive plant species are those species that have been given special recognition by federal, state, or local conservation agencies and organizations because of limited, declining, or threatened population sizes. This includes those species listed by the federal and state government as threatened or endangered, those species proposed for federal and/or state listing or candidates, those plant species found on Lists 1A, 1B, or 2 of the CNPS’s Inventory of Rare and Endangered Plants of California (CNPS 2022), Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

and plant species found on the MSHCP Endemic Plant List. CNPS List 3 or List 4 species were included in discussions only when incidentally encountered during the field surveys.

The available data reviewed included:
 California Department of Fish and Wildlife (CDFW) California Natural Diversity Database (2022) search of the project area and within a 1-mile radius
 CNPS Inventory of Rare and Endangered Plants nine-quad search centered on USGS 7.5-minute Riverside West topographic quadrangle (CNPS 2022)
 Consortium of California Herbaria online database (Consortium of California Herbaria 2022)  Information for Planning and Consultation resource list from the U.S. Fish and Wildlife Service (USFWS 2022)
 The Calflora database (Calflora 2022)
 The Jepson Manual, Vascular Plants of California (Baldwin et al. 2012)  Western Riverside County Multiple Species Habitat Conservation Plan – 2019 Rare Plant Survey (Biological Monitoring Program 2020)
Based on the above literature and database reviews, a list of potentially occurring sensitive plant species was developed for the project area. A table of potentially occurring species is provided in Attachment C and also provides the preferred habitat for each species and evaluates the potential for occurrence within the survey areas.

The survey for the sensitive plant species were based on: (1) the habitat preference, habit, and phenology for each species; (2) professional experience; and (3) any other additional information gathered from those sources listed above and in Attachment C. The survey for sensitive rare plants was conducted by walking meandering belt transects throughout the survey areas. The distance between transects was adjusted when necessary to provide adequate coverage and account for ground-surface visibility, terrain, vegetation density, and access. Surveys efforts were targeted within unique portions of the project area where microhabitats had an increased potential to support special-status species and followed the CDFW Protocols for Surveying and Evaluating Impacts to Special Status Native Plant Populations and Natural Communities (CDFW 2018). The locations of special-status plants discovered in the project area and the number of individuals observed were recorded with a Trimble GNSS R1 global positioning system receiver with sub-meter accuracy in conjunction with ArcGIS Field Maps software application on tablets.

Prior to the survey, reference population checks were conducted to confirm phenology of rare plants species with the potential to occur within the survey area and included Santa Ana River woolly star (Eriastrum densifolium var. sanctorum), San Diego Ambrosia, and Brand’s phacelia. Table 2 provides the details of the reference population checks.

Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Table 2. Rare Plant Reference Population Site Visits
Species Date Location Status/Phenology
Brand’s Phacelia
(Phacelia stellaris)
4/7/2022 West of Santa Ana River,
southeast of Flabob Airport,
and south of Crestmoore
Road, Riverside, County
Species was not detected at
the only known extant
population of Brand’s
phacelia in western Riverside.

The last documented
observation of this species
was in 2019, when one
individual was detected
(Biological Monitoring
Program 2020).

San Diego Ambrosia
(Ambrosia pumilla)
4/5/2022 Approximately 0.25 mile due
west of I-15 off Nichols Road,
Lake Elsinore, California
Large population, with many
plants observed. Phenology
approximately 100%,
vegetative, 0% budding/
flower
Santa Ana River
Woolly-Star
(Eriastrum
densifolium ssp.
sanctorum)
4/7/2022 Santa Ana River wash, from

0.2 mile north to 0.6 mile
south of SR 60 and west of
Fairmount Park Golf Course,
Riverside California
Historically small population,
two plants observed north of
SR 60. Phenology
approximately 100%,
vegetative: 0%
budding/flower
I- = Interstate; SR = State Route.

All plant species encountered during the field surveys were identified and recorded for inclusion in Attachment D. Latin and common names of plants follow The Jepson Manual (Baldwin et al. 2012).

Where not listed in Baldwin, common names were taken from The Calflora Database (Calflora 2022).

Results
Based on the literature and database searches, 14 special-status plant species were identified as occurring or potentially occurring within the region of the Project (Attachment C). Two special- status species were observed during the focused survey: Santa Ana River woolly Star (federally and state-listed endangered, CRPR 1B.1, MSHCP narrow endemic plant) and California black walnut (CRPR 4.2 and MSCHP-Covered species). The locations of these special-status plant species are shown in Figures 4a and 4b (Appendix A). The location of Santa Ana River woolly star occurs within alluvial scrub habitat within the Tequesquite Extension North portion of the project area. Santa Ana River woolly star is not expected to occur elsewhere within the project area because of the lack of suitable habitat outside of the Tequesquite Extension North. A California black walnut grove and individuals were observed within the Camp Evans project component in Southern Cottonwood– Willow Riparian Forest, Southern Coast Live Oak Riparian Forest, Southern Riparian Scrub, and Mulefat Scrub.

Eight of the 14 identified species were determined to have suitable habitat within the project area, but were not detected during focused surveys conducted in 2022 (Attachment C). The remaining Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

four species were determined to have no suitable or marginally suitable habitat within the survey area.

If there are questions or clarifications needed regarding this report, please contact ICF Senior Botanist Shawn Johnston.

Sincerely,

Shawn Johnston
ICF Senior Botanist
[email protected]

Enclosed:

Attachment A: Figures
Attachment B: Resumes
Attachment C: Special-Status Plant Species Potential for Occurrence Table Attachment D: Observed Plant Species

Literature Cited
Baldwin, B., D. Goldman, D. Keil, R. Patterson, T. Rosatti, and D. Wilken. 2012. The Jepson Manual:

Vascular Plants of California (Second Edition). Los Angeles, CA: University of California Press.

Biological Monitoring Program. 2020. Western Riverside County MSHCP Biological Monitoring Program 2019 Rare Plant Survey Report. Prepared for the Western Riverside County Multiple Species Habitat Conservation Plan. Riverside, CA. Available: http://wrc-rca.org/about- rca/monitoring/monitoring-surveys/. Accessed: April 2022.

Calflora: Information on California Plants for Education, Research and Conservation. 2022. The Calflora Database. Berkeley, CA. Available: https://www.calflora.org. Accessed: April 2022.

California Department of Fish and Wildlife (CDFW). 2018. Protocols for Surveying and Evaluating Impacts to Special Status Native Plant Populations and Sensitive Natural Communities. Available:
https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=18959&inline. Accessed: April 2022.

California Native Plant Society (CNPS). 2022. Inventory of Rare and Endangered Plants of California (online edition, v9-01 0.0). Sacramento, CA. Available at: http://www.rareplants.cnps.org.

Accessed: April 2022.

Consortium of California Herbaria. 2022. Specimen data from CCH contributing herbaria. Available:
https://www.calflora.org. Accessed: April, 2022.

Rare Plant Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Holland, R. F. 1986. Preliminary Descriptions of the Terrestrial Natural Communities of California.

October. Sacramento, CA: California Department of Fish and Game.

Oberbauer et al. 2008. Draft Vegetation Communities of San Diego County. March. Based on Preliminary Descriptions of the Terrestrial Natural Communities of California, Robert F. Holland, Ph.D., October 1986.

U.S. Fish and Wildlife Service (USFWS). 2022. Information for Planning and Consultation. Retrieved from: IPaC: Home (fws.gov). Accessed: April 2022.

Pacific Ocean
Figure 1
Vicinity Map
Riverside Gateway
±
Source: ESRI StreetMap
North America (2010)
0 8 164
Miles
San Bernardino
Riverside
San Diego
Orange
Los Angeles
Kern
P a c i f i c
O c e a n
USA
MEXICO
^_
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\1_Vicinity.mxd Date: 11/21/2022 38834 ^_Project Location
Project Location
Martha McLean
5200
Tequesquite
St. Francis
Falls
Jurupa Ave.

Trailhead
Loring Park
Tequesquite
North
Extension
Tequesquite
South
ExtensionSanta Ana
River
Greenway
Santa Ana
River
Greenway
Camp Evans
187
443
534
617
621
Figure 2
Project Overview
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\2_ProjectOverview.mxd; User: 38834; Date: 11/21/2022 0 2,1001,050
Feet
Legend
Riverside Gateway Project Limits
WRMSHCP Units
Criteria Area Cells
Public/Quasi-public Conserved
Lands
Source: ICF, USFWS, USGS; CNDDB 2019
1:26,000
[
N

Jurupa Ave.

Trailhead
SRF-d
SRF-d
NNG
NNG
NNG
NNG
NNG
MFS
MFS
OW
NNR1
TAM
DEV
DIS
RUD
RUD
RUD
RSS
RSS
RSS
617
Figure 3a
Vegetation and Land Cover
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\3a_RarePlantSurveyArea.mxd; User: 38834; Date: 11/21/2022 0 300150
Feet
Legend
Riverside Gateway Project Limits
Uplands
Nonnative Grassland [NNG]
Riversidean Sage Scrub [RSS]
Ruderal Upland Mustard and
Forbs [RUD]
Riparian
Mule Fat Scrub [MFS]
Non-native Riparian (Arundo
Dominated) [NNR1]
Open Water [OW]
Southern Riparian Forest
(Disturbed) [SRF-d]
Tamarisk Scrub [TAM]
Other
Developed
Disturbed
WRMSHCP Units
Criteria Area Cells
Public/Quasi-public Conserved
Lands
Narrow Endemic Plants Survey
Area
Source: ICF, USFWS, USGS; CNDDB 2019
1:3,600
[
N

5200
Tequesquite
Tequesquite
South
Extension
Santa Ana
River
Greenway
Santa Ana
River
Greenway
Tequesquite
North
Extension
RTBAS
NNW
NNW
NNWNNG
NNG
EUC
EUC
EUC
EUC
EUC
SRW
SRW
CLORF
MFSMFS
MFS
SRS-d
SRS-d
RUD
DEV
RUD

RUD RUD
FWSB
DEV
DEV
DEV
AKM
DIS
DIS
SCWRF-d
SCWRF-d
RUD
RUD
SAWRF
DEV
AKM
AKMAWS
AWS
DIS
SCWRF-d
RUD
FWSB
OWOW
NNR2
NNR4
443
534
Figure 3b
Vegetation and Land Cover
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\3b_RarePlantSurveyArea.mxd; User: 38834; Date: 11/21/2022 0 500250
Feet
Legend
Riverside Gateway Project Limits
WRMSHCP Units
Criteria Area Cell
Public/Quasi-public Conserved Lands
Narrow Endemic Plants Survey Area
Uplands
Eucalyptus Woodland [EUC]
Fourwing Saltbush Scrub [FWSB]
Nonnative Grassland [NNG]
Nonnative Woodland [NNW]
Riversidean Alluvial Fan Sage Scrub
[RAS]
Ruderal Upland Mustard and Forbs
[RUD]
Russia Thistle - Five Hook Bassisa
Fields [RTBAS]
Riparian
Arrowweed Scrub (AWS)
Mule Fat Scrub (MFS)
Non-native Riparian (Mexican Fan Palm
Dominated) [NNR2]
Nonnative Riparian (Tree of Heaven
Dominated) [NNR4]
Open Water [OW]
Southern Arroyo Willow Riparian Forest
[SAWRF]
Southern Coast Live Oak Riparian
Forest [CLORF]
Southern Cottonwood - Willow Riparian
Forest (Disturbed) [SCWRF-d]
Southern Riparian Scrub (Disturbed)
[SRS-d]
Southern Riparian Woodland [SRW]
Meadows and Marshes
Alkali Meadow (AKM)
Other
Developed (DEV)
Disturbed (DIS)
Source: ICF, USFWS, USGS; CNDDB 2019
1:6,000
[
N

5200
Tequesquite
St. Francis
Falls
Loring Park
Tequesquite
North
Extension
Santa Ana
River
Greenway
Tequesquite
South
Extension
RTBAS
RTBAS
RAS
RAS
DIS
NNW
NNW
RSS
RSS
RSS
RSS
DIS
DIS
SRWSRW
DIS
SCWRF

SCWRF AWS
AWS
AWS
RUD
RUD
RUD
RUD
RAS
RAS
RAS
RAS
RAS
RAS
NNG
EUC
RUD
DEV
AWS
DIS
SCWRF
SCWRF
FWSB
443
534
Figure 3c
Vegetation and Land Cover
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\3c_RarePlantSurveyArea_.mxd; User: 38834; Date: 11/21/2022 0 600300
Feet
Legend
Riverside Gateway Project Limits
WRMSHCP Units
Criteria Area Cell
Public/Quasi-public Conserved Lands
Narrow Endemic Plants Survey Area
Uplands
Eucalyptus Woodland [EW]
Fourwing Saltbush Scrub [FWSB]
Nonnative Grassland [NNG]
Nonnative Woodland [NNW]
Riversidean Alluvial Fan Sage Scrub
[RAS]
Riversidean Sage Scrub [RSS]
Ruderal Upland Mustard and Forbs
[RUD]
Russia Thistle - Five Hook Bassisa
Fields [RTBAS]
Riparian
Arrowweed Scrub [AWS]
Open Water [OW]
Southern Cottonwood - Willow Riparian
Forest [SCWRF]
Southern Riparian Woodland [SRW]
Other
Developed [DEV]
Disturbed [DIS]
Source: ICF, USFWS, USGS; CNDDB 2019
1:7,200
[
N

St. Francis
Falls
Loring Park
Camp Evans
NNW
DIS
EUCEUC
NNW

SRSNNG RUD
SCWRF
EUC
EUC
NNG
CLORF
MFS
CLORF
NNG
TAM
EUC
CLORFNNR4
RUD
MFS
NNW
DIS
DIS
NNG
SRS-d
RUD
RUD
DEV
SRS-dMFS
RUD
.

NNW
NNW
SRS-d
RUD
SCWRF-d
SRS-d
RUD
.NNR2
SRW
DIS
RUD
RUD
NNW
DEV
NNW
DISDIS
SRS-d
NNR2
NNR2NNR2
NNR2NNR2
NNR4
187
Figure 3d
Vegetation and Land Cover
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\3d_RarePlantSurveyArea_.mxd; User: 38834; Date: 11/21/2022 0 600300
Feet
Legend
Riverside Gateway Project Limits
WRMSHCP Units
Criteria Area Cell
Public/Quasi-public Conserved Lands
Narrow Endemic Plants Survey Area
Uplands
Eucalyptus Woodland [EUC]
Nonnative Grassland [NNG]
Nonnative Woodland [NNW]
Riversidean Sage Scrub [RSS]
Ruderal Upland Mustard and Forbs
[RUD]
Riparian
Mule Fat Scrub [MFS]
Non-native Riparian (Mexican Fan
Palm Dominated) [NNR2]
Nonnative Riparian (Tree of Heaven
Dominated) [NNR4]
Southern Coast Live Oak Riparian
Forest [CLORF]
Southern Cottonwood - Willow Riparian
Forest (Disturbed)
Southern Riparian Scrub [SRS]
Southern Riparian Scrub (Disturbed)
[SRS-d]
Southern Riparian Woodland [SRW]
Tamarisk Scrub [TAM]
Other
Developed [DEV]
Disturbed [DIS]
Source: ICF, USFWS, USGS; CNDDB 2019
1:7,200
[
N

!(!(
!(!(!(!(!(
!(
443
534
Figure 4a
Rare Plant 2022 Survey Results
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\4a_RarePlantResults.mxd; User: 38834; Date: 11/22/2022 0 600300
Feet
Legend
Riverside Gateway Project Limits
Rare Plants
!( Santa Ana woolly-Star (Eriastrum
densifolium ssp. sanctorum)
WRMSHCP Units
Criteria Area Cells
Public/Quasi-public Conserved
Lands
Narrow Endemic Plants Survey Area
Source: ICF, USFWS, USGS; CNDDB 2019
1:7,200
[
N

!(
!(
!(!(
!(
!(!(!(
!(
!(!(
187
Figure 4b
Rare Plant 2022 Survey Results
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RarePlants\4b_RarePlantResults.mxd; User: 38834; Date: 11/22/2022 0 600300
Feet
Legend
Riverside Gateway Project Limits
RarePlants
!( Southern Black Walnut (Juglans
californica)
Southern Black Walnut (Juglans
californica)
WRMSHCP Units
Criteria Area Cells
Public/Quasi-public Conserved
Lands
Narrow Endemic Plants Survey
Source: ICF, USFWS, USGS; CNDDB 2019
1:7,200
[
N

Page
1 SHAWN JOHNSTON
Senior Botanist and Restoration Ecologist
Shawn Johnston has over 20 years of biological consulting experience with expertise and specialization in rare and special-status plant surveys, vegetation community characterization and biological habitat assessment. His botanical and taxonomic expertise encompasses a wide range of plant communities including desert scrubs and woodlands, coastal and inland scrubs, clay and hardpan vernal pools, chaparrals, grasslands, wetlands and riparian habitats.

In addition to his botanical expertise, Shawn has implemented and monitored both large- and small-scale ecological restoration projects in a myriad of habitats which has furthered his regional knowledge and understanding of the flora, ecology, and micro-habitats within southern California.

Representative Project Experience
Tule Wind Energy Project—Avangrid Renewables, San Diego County, California
Restoration Ecologist. Shawn is currently serving as a restoration ecologist for the revegetation of temporary impacts associated with the construction of the Tule Wind Project. Shawn supervises the execution of mitigation plans by the restoration contractor including remedial hydroseed application and transplanting of salvaged plants. In addition, he oversees on-going restoration site maintenance and weed abatement activities and provides annual vegetation sampling and performance reporting for the project. 2020 - Present
Lake Evans Riverside Gateway Park Project— Riverside County, California
Lead Botanist and Restoration Ecologist. Shawn led rare and special-status plant surveys, vegetation community mapping, and evaluation of habitat restoration potential for the proposed enhancement and development of Fairmont Park and additional open space areas located within the Santa Ana River riparian corridor within the City of Riverside. 2021 – 2022.

I-15 Express Lane Southern Extension—RCTC, Multiple Cities, Riverside County, California Lead Botanist. Shawn led rare and special-status plant surveys and vegetation community mapping for the I-15 Express Lane between the cities of Lake Elsinore and Corona in support of a Natural Environmental Study. Survey habitats included Diegan and Riversidian sage scrub, alluvial fan scrub, riparian forests and shrublands, woodlands and marshes. 2020 and 2021.

Tehachapi Renewable Transmission Project (TRTP) Restoration Program Management, Segments 7, 8, and Underground Segment 6—Southern California Edison (SCE), Los Angeles County, California Lead Restoration Ecologist. Shawn served as the led restoration ecologist for the revegetation of temporary impacts associated with the construction of SCE’s TRTP Segments 6, 7 and 8, which includes portions of the179-mile 500kv transmission line form the southern edge of Angeles National Forest to Chino California. Shawn supervised the execution of restoration plans by the restoration contractor including hydroseed application, soil decompaction and installation of irrigation systems and container plants. He also oversaw the maintenance, remedial treatments, and weed abatement activities for the restoration project and provided annual vegetation monitoring and reporting. 2015 through 2020.

Years of Experience
 Professional start date:
06/2001
 ICF start date: 05/2016
Education
 BS, Biology (emphasis in
Evolution and
Systematics), San Diego
State University

Page
2 Mountain Meadow Preserve—County of San Diego DPR, San Diego County, California Botanist. Shawn served as the lead botanist for a special status plant and vegetation mapping survey for a 768-acre San Diego County open space preserve. Shawn conducted focused surveys within mix-chaparral, coastal sage scrub, oak woodland and riparian habitats, and reported on the finding within an environmental assessment report. 2019.

Cities of Highland and Redlands Regional Connector—Highland and Redlands, San Bernardino County, California
Lead Botanist. Shawn led focused rare plant surveys for state and federally endangered slender-horned spineflower (Dodecahema leptocerus) and Santa Ana River woollystar (Eriastrum densifolium ssp. sanctorum) for a proposed bike trail alignment adjacent to Orange Street over the Santa Ana River and Plunge Creek. 2018.

Big Beau Solar Project—EDF Renewables, kern County, California Lead Botanist. Shawn served as the lead botanist for focused rare and special status plant surveys and vegetation mapping for a proposed 3000-acre photovoltaic site and associated transmission corridors near Rosamond, California. 2018.

State Route 210 Mixed Flow Lane Addition Project— San Bernardino Associated Governments (SANBAG), San Bernardino County, California Lead Botanist. Conducted reference site visits, habitat assessments, and focused rare plant surveys for slender-horned spineflower (Dodecahema leptocerus) and Santa Ana River Wooly Star (Eriastrum densifolium ssp. sanctorum) within portions of the Santa Ana River, Plunge Creek, and City Creek floodplains. Focused surveys for slender-horned spineflower were negative during the survey and approximately 140 individuals of Santa Ana River Wooly star were mapped and documented. 2017.

Otay Valley River Mitigation Bank Expansion (Phase 2)— City of Chula Vista, California Lead Botanist. Shawn led rare and special-status plant surveys, and vegetation community mapping for an open space preserve and riverine restoration project. focused surveys were conducted within a wide range of habitats including mix- chaparral, coastal sage scrub, oak woodland, vernal pool and riparian. 2017 and 2018.

Pio Pico Energy Center Project Environmental Site Assessment—City of Chula Vista, California Lead Botanist. While employed by URS, Shawn conducted rare plant surveys in coastal sage scrub, vernal pool, oak woodland, Tecate cypress woodland, and southern willow scrub habitats for a 250-acre environmental assessment study for a proposed power plant project near Otay Lakes in Chula Vista. 2010.

Hollenbeck Canyon Wildlife Area Land Management Plan—CDFW, South Coast Region, San Diego County, California
Botanist. While employed by AECOM (formerly EDAW), Shawn conducted rare plant surveys and vegetation community mapping within the proposed 3,200-acre Hollenbeck Canyon Wildlife Area. Habitats surveyed included coastal sage scrub, native and non-native grasslands, oak woodlands, chaparral, and mixed chaparral. 2006.

San Diego State Herbarium—San Diego State University, California Herbarium/Research Assistant. Shawn served as herbarium assistant at San Diego State University. Under the guidance of Dr. Michael G. Simpson, he conducted research on Woolyleaf ceanothus (Ceanothus tomentosus) for potential subspecies determination based off distinct morphological characteristics correlated with geographical isolated groups within the species range. His additional herbarium work included collecting, cataloging, mounting, and managing specimens for the San Diego State University Herbarium. 2000 through 2001.

Page
1 JEAN-LUC BRULLOT

Senior Habitat Restoration Specialist / Arborist
Mr. Brullot oversees maintenance crew scheduling, co-
ordinates with project managers and restoration ecologists, and conducts restoration implementation and maintenance.

Mr. Brullot is experienced with the restoration
implementation and maintenance of desert, chaparral,
vernal pool, wetland/riparian, and coastal sage scrub
habitat. Mr. Brullot was a successful landscaper and served as project coordinator for native habitat restoration in Chollas Creek in the City of San Diego.

Project Experience

Lake Evans Creek Restoration—SBVMWD, California,
07/2021 – 07/2021
Habitat Restoration Specialist / Arborist Lead: Jean-Luc led the Arborist survey and mapping of over 900 tree
species and palms. Trees were mapped using a GPS device and a submeter to improve the accuracy and assist with the vegetation mapping. The mapping will be used for future habitat restoration designs. Also, installed water wells for future water table measurements. Jean-Luc monitor the
water wells on a monthly basis.

Gateway Project, Riverside , City of Riverside. 08/2021- 08/2021
.

Habitat Restoration Specialist / Arborist Lead: Surveyed over 2,000 trees and palms at 10 different locations for future recreation park designs. Assist with the vegetation mapping including rare plant species. The survey included mapping, species identification, and overall health. Tree Reports including the results of the surveys submitted to the City of Riverside.

USACE, Corona , Santa Ana River. 11/2019-02/2022
.

Habitat Restoration Specialist / Project Manager: Jean-Luc managed and monitored the implementation and maintenance of 425 acres. The restroration consisted of planting, watering, hydroseeding, and herbicide treatment. Protected present rare plants and seeded to increase the

Years of Experience
 Professional start date: 06/2010
 ICF start date: 10/2016
Education
 AS, Landscape Architecture ,
Cuyamaca College, 2010
Certifications
 Qualified Applicator License (QAL)
129259 Category: Landscape
Maintenance (B) Department Of
Pesticide Regulation, CA,
01/01/2021 -12/31/202 2
 C-27 Landscaping Business
License
 GIS Certificate of Accomplishment
 ISA Arborist Certificate
 ISA Tree Risk Assessment
Qualification

Professional Development
 Propagation, Pest + Disease on
Trees and Shrubs

Page
2 density. Jean-Luc also led the annual transects data collection and wrote quarterly memos to be submits to the USACE.

USACE, Newport Beach , Santa Ana River. 07/2013-08/2016 .

Habitat Restoration Specialist: Jean-Luc scheduled and oversee the progress of the weed removal and maintenance of the Tern Island. Led crew of 5-10 technicians spaying herbicide. Jean- Luc led the herbicide training, supervised the application, reported the amount used to the County, and scheduling.

USACE, Cornona , Santa Ana River, Prado Dam. 12/2020-Present .

Project Manager/Arborist. Jean-Luc is leading the mitigation of 500 coast live oak (Quercus agrifolia). Jean-Luc collected the acorns and had them germinate at a local nursery. Later, Jean- Luc supervised the proper planting installation. Jean-Luc tagged the trees and recorded their location using a GPS. Jean-Luc monitor the trees on quarterly basis, schedule the maintenance and watering visits for a period of five years. Write annual reports and quarterly memos to be submitted to USACE.

SR-125 South Vernal Pool and Quino Checkerspot Butterfly Habitat Restoration—Caltrans and South Bay Expressway, San Diego County, California, 6/2010-6/2012 Field Director / Habitat Restoration Specialist. Jean-Luc oversaw maintenance of the 100 acre site that includes upland and vernal pools for a period of two years. Main tasks were herbicide dispensing supervision and training, tracked herbicide levels, reported to the County of San Diego on a monthly basis, removed non-native plants, seeding, protect rare plants, scheduled crew, ordered materials, and wrote daily progress reports as part of mitigation for the SR-125 South project.

Otay and Sweetwater Rivers Revegetation Projects —Caltrans, San Diego County, California, 6/2010-7/2015
Field Director/Restoration Ecologist. Revegetation of portions of the Sweetwater and Otay Rivers that were temporarily impacted by construction of the State Route (SR) 125 South project, including 10 acres of wetland and upland habitats, was required as mitigation per the project permits.

Performed field crew scheduling and oversight, as well as long-term maintenance of the revegetation areas.

Otay River Restoration Project and Mitigation Bank—HomeFed, Chula Vista, California, 2014 – 2021:

Habitat Restoration Specialist: Jean-Luc schedule, oversaw the progress, and success criteria.

Lead crew of 5-10 technicians planting plants and trees, salvaging plants and trees, weed abatement, and maintaining the 148 acres site quality for a period of 5 years. Report weekly to project managers.

San Diego Thornmint, Wright Field Preserve, Alpine, 2013-2016.

Habitat Restoration Specialist: Performed and supervised weed abatement to promote San Diego thornmint (endangered species) propagation. Collected seeds and propagated San Diego thormint.

Habitiat maintained: Native grassland, Engelmann oak woodland, riparian habitat, coastal sage scrub/chaparral, vernal pools. 230 acres.

Page
3 Sweetwater Regional Park Preserve, San Diego, 2012-2013.

Habitat Restoration Specialist: Performed and supervised weed abatement for the entire area.

Habitiat: Native grassland, riparian habitat, vernal pools, and coastal sage scrub/chaparral. 500 acres.

Employment History
Groundwork Chollas Creek. Project Coordinator. San Diego, CA . 01/2010 – 05/2010.

AECOM. Habitat Restoration Specialist. San Diego, CA. 06/2010 – 10/2016.

ICF. Senior Habitat Restoration Specialst, Arborist. San Diego, CA. 10/2016– Present.

NICHOLAS (COLE) SUTTER
Biologist
Cole Sutter’s professional experience includes a variety of focused wildlife surveys, nesting bird surveys, rare plant surveys, vegetation mapping, restoration monitoring, construction monitoring, protected species and general habitat assessments, implementation and maintenance of wildlife cameras, wetland delineations, as well as bio and wetlands environmental clearance. In addition to relevant project experience, Cole has participated in a wide variety of biologically related projects in a volunteer capacity such as invasive plant removal and restoration monitoring efforts at Audubon Starr Ranch Sanctuary, restoration facilitation and nursery support at local wetlands, and avian vocalization analysis work at Cal State Long Beach.

Restoration Monitoring & Botanical Work:

SCE Remote Grids — Southern California Edison, Multiple Counties, California*
Biologist (Mar 2022-Apr 2022, November 2022) The purpose of this project is to build remote-power systems that will help mitigate wildfire risk and reduce impacts on customers during Public Safety Power Shut-off (PSPS) events. Cole performed baseline biological surveys and vegetation mapping for three different sites located in the Angeles National Forest. Cole also performed a rare plant survey and assisted with a jurisdictional delineation for one of the sites. All findings were later compiled into a habitat assessment and avoidance measures document provided to SCE.

Devil’s Gate Reservoir Restoration Project — LACFCD,
Pasadena, Los Angeles County, California
Biologist (Apr 2022-September 2022) The Devil's Gate Reservoir Restoration Project was a large-scale effort which aimed to increase flood protection for communities downstream of Devil's Gate Dam via sediment removal and restore habitat within a popular section of the Arroyo Seco Watershed. Cole provided restoration monitoring for a landscaping crew of 10+ people tasked with maintaining native vegetation communities and planted riparian sections on the eastern portion of the watershed. Cole also provided daily reporting and CNDDB submissions for any special status species located on site.

Tehachapi Renewable Transmission Project — SCE, Multiple Counties, California* Biologist (Dec 2021, May 2022-September 2022) Massive project focused on creating new and upgraded high-voltage electric transmission lines and substations to carry electricity across multiple counties in Southern California spanning many years and costing hundreds of millions of dollars. Project construction was completed in 2016 and is now in its Restoration phase. Cole was trained by Rancho Santa Ana Botanic Garden employees at an SCE nursery in Auberry and aided in phytophthora and other pathogen testing for SCE nursery raised oaks. Cole later worked on the ANF annual performance monitoring (APM) for sections 6 and 11, which involved visiting restoration sites in the Angeles National

1.7 Years of Experience
Professional start date: 04/2021
ICF start date: 04/2021
Education
BS, Organismal Biology, California
State University Long Beach,
2020
Professional Development
Field Herpetology of the Southwest,
American Museum of Natural
History
- July 2017, July 2018
Amphibians of the San Francisco
Bay Area Workshop, Laguna de
Santa Rosa Foundation
- November 2021
Introduction to the Mojave Desert
Tortoise, Online Lecture Course
& Field Workshop
- Novemb er 2022

Nicholas Sutter | Resume ____________________________________________________________ Forest to document the native plant composition and cover, and fill out rare plant datasheets or tree monitoring sheets where necessary. Following the APM, Cole assisted with quantitative site sampling involving laying down sample plots in natural areas to compare with restoration plots. Cole also assisted in long term monitoring (LTM) focused on progression of plant coverage, erosion, and anthropogenic disturbance. Rare plant and tree installations were given health assessments and soil moisture was documented where necessary. Cole also gained experience in using SCE’s FRED form submission site for APM and LTM forms.

Dominguez Gap Wetlands Maintenance Program — LACFCD, Los Angeles County, California
Biologist (Oct 2021- Feb 2022, November 2022-Ongoing) Project involved vegetation control, clearing trash and debris, removing fallen or dead trees and shrubs, restoring open water areas to as -built condition, conducting repairs to bank stabilization, and surrounding wetland maintenance. Cole provided monitoring for vegetation removal, BMPs, animal mortalities, and water levels. Cole also recorded notable bird sightings and ensured no active nesting was occurring in any of the project’s disturbance areas.

Sandrini Solar Project — EDP Renewables, Community of Mettler, Kern County, California Biologist (Jan 2022) Proposed solar project to develop, construct, and operate a 300 MW solar facility on approximately 3,447 acres of privately owned land. Cole assisted in mapping the area’s vegetation and running 25, 50m representative transects. Area was partially classified as sensitive valley sink scrub, and involved working around multiple occurrences of several rare plant species.

Lane Channel Maintenance Project — Orange County Public Works, MA-080-21010550, Irvine, Orange County, California
Biologist (Jun 2021, Mar 2022) Project consisted of repairing the eroded banks of the channel back to plan conditions. ICF provides restoration monitoring and reporting support for the approximate 8- acre restoration site. Cole provided qualitative restoration monitoring involving identifying hydroseeded and recruited natives as well as invasives and potentially problematic exotic species alongside follow -up reporting.

Wagon Wheel Creek Restoration and Stormwater Management Project — Orange County Parks, MA-080-21010550, Unincorporated Orange County, California Biologist (May 2021, May 2022) Project consisted of installing structures to decrease velocity of storm water flows, reduce erosion, and restore portions of the severely incised Wagon Wheel Creek. ICF provides restoration monitoring and reporting support for the approximate 4-acre habitat restoration site.

Cole provided annual quantitative monitoring support through use of established transects identifying plant species while organizing and producing data sheets used later in reporting.

Wildlife Surveys & Habitat Assessments:

I-215 Harley Knox Interchange — RCTC, Perris, Riverside County, California Biologist (Apr 2022-June 2022) Project focused on expanding the Harley Knox Interchange to better facilitate traffic. Cole assisted with the pre-construction Burrowing Owl habitat assessment and following protocol surveys as outlined by the Western Riverside Multiple Species Habitat Conservation Plan Area (MSHCP).

I-210/Victoria Ave Interchange — SBCTA, Highland, San Bernardino County, California Biologist (Apr 2022-June 2022) The SR 210 Lane Addition/Base Line Interchange project will widen a large stretch of the SR 210 to provide increased traffic flow throughout this corridor to eliminate the

existing bottleneck and provide lane continuity. Cole assisted with the pre-construction Burrowing Owl habitat assessment and four protocol surveys following.

I-405 Improvement Project — OCTA, Orange County, California Biologist (Apr 2022-August 2022) A massive 16-mile widening project including a whole host of other transportation and infrastructure improvement elements. Cole provides as-needed routine nesting bird surveys for the stretches running along the highway and on/off-ramps as well as one-off surveys for other sections that may be affected by smaller efforts throughout the area.

Routine Line Clearing Support — Southern California Edison, Multiple Counties, California Biologist (Feb 2022-Apr 2022) Project involves providing environmental inspections along electrical lines and poles/towers prior to the start of work of electrical maintenance activities. Cole provides nesting bird survey support as well as habitat assessments and identification of sensitive and protected species which may be impacted by maintenance work. Also provides pre-construction form reporting for surveyed areas.

Metro Purple Line Extension, Section 3 — Los Angeles Metropolitan, Los Angeles County, California
Biologist (Jan 2022-August 2022) The project involves providing environmental and cultural support for the expansion of the D Line of Metro’s rail system to the Westside region. Cole provided nesting bird survey support for surrounding construction in Section 3, and follow-up biological reporting.

Riverside Gateway Project — Studio MLA, Riverside, Riverside County, California* Biologist (Dec 2021, April 2022-July 2022) The project aims to improve and expand upon park infrastructure alongside the Santa Ana River in downtown Riverside. Cole staked suitable locations and called in the dig-alerts for soil pit testing, and later assisted wetlands staff in running the delineation while gaining experience filling out wetland data forms. Cole later assisted with 8 Least Bell’s Vireo protocol surveys on site, 5 Southwestern Willow Flycatcher protocol surveys and a Southwestern Willow Flycatcher and Yellow-billed Cuckoo habitat assessment alongside a permitted biologist. Cole also assisted in mapping suitable burrows and conducting Burrowing Owl surveys for portions of the site.

Additionally, Cole helped with rare plant surveys of the site, which led to multiple rare species detections, and associated mapping.

Oso Parkway and Crown Valley Parkway Bridge Bat Surveys — Orange County public works, MA-080-21010550, Mission Viejo, Orange County, California Biologist (Nov 2021) A small project aimed to determine the level of bat usage in two bridges scheduled for maintenance work inside the cells. Assisted with the visual surveys and audio collection for later Anabat analysis over the course of two early mornings and late evenings.

On-Call Biological Task Orders — Caltrans District 5, Santa Barbara and San Benito County, California
Projects aimed to improve highway functionality and capacity. Cole served as a biologist assisting in pre- construction California Tiger Salamander surveys and field labor/burrow excavation for the task orders including:
• TO 27, San Benito Route 156 Project.
• TO 20, Solomon Canyon Rumble Strip/Shoulder Widening.

Nicholas Sutter | Resume ____________________________________________________________ Physical and Camera Trapping:

On-Call Biological Task Orders — Caltrans District 5, Santa Barbara and San Benito County, California
Project aims to assess the usage of culverts, bridges, and other passageways under and along highway 101 running through Gaviota Pass by animals to later propose wildlife crossing solutions to reduce animal mortality. Cole assisted in installing 20 wildlife cameras throughout the pass to best capture nearby animal movement. He has continually supported documentation of further camera installation as well as data and photo processing.
• TO 29, US 101 Gaviota Pass Wildlife Connectivity Study Santa Ysabel Preserve — County of San Diego Department of Parks and Recreation, Santa Ysabel, San Diego County, California
Biologist (May-Jun 2021) This project involved a variety of baseline biological and cultural resource surveys focused on a newly acquired parcel of land for the Santa Ysabel Preserve. Cole assisted with the baseline herpetological surveys utilizing funnel traps alongside a senior biologist, later providing insight for the biodiversity report, and assisted with wildlife camera trapping.

Bullhead Solar Project — EDF Renewables, Rosamond, Kern County, California* Biologist (May 2021, June 2022) Conducted several focused biological technical surveys under supervision of the lead field biologists for a proposed solar project consisting of nearly 2,000 acres and over 30 miles in the western Mojave Desert. Help conduct two of four focused burrowing owl surveys, which resulted in detection of one burrowing owl pair, several desert kit fox dens, and hundreds of potential burrowing owl burrows. Also supported the Mohave ground squirrel biologist during two 5- day camera-trapping sessions throughout the project area. Set up, installed, maintained, baited, and downloaded the memory cards from 15 game cameras over the 10-day period. During all of these surveys, recorded any Joshua trees observed in the project area. Cole later assisted with a vegetation mapping effort aimed to gain information for Swainson’s Hawk mitigation approach.

Construction Monitoring:

OCPW On-Call Tasks — Various Cities, Orange County, California* • Talbert Ocean Outlet Emergency Sand Removal (June 2022) — Project was focused on clearing the Talbert Outlet to restore tidal flushing. Cole monitored the work to ensure the nearby nesting Least Terns were not disturbed as well as ensured no Snowy Plovers nor any other wildlife wandered into the work area.
• San Diego Creek Sediment Removal (Oct 2022) — Project involved removing sediment from a partially channelized stretch of creek. Cole performed compliance checks on Southwestern Pond Turtle exclusion fencing and BMP measures.
• Santa Ana River Outlet Sediment Removal (Oct-Nov 2022) — Project involved dredging sand from the Santa Ana River Outlet and hauling it further down the beach. Cole performed pre- construction Snowy Plover surveys and compliance checks.

Caltrans On-Call Biological Task Orders — District 5, Santa Barbara and San Benito County, California
Project adding one high-occupancy vehicle lane in each direction on US 101 from 0.2 mile south of Bailard Avenue in the City of Carpinteria to Sycamore Creek in the City of Santa Barbara. Cole monitored a landscaping crew during the removal and trimming of willows growing in a draining running along the construction site.
• TO 28, South Coast Highway 101 HOV Lanes

Environmental Clearance and Permitting:

SCE Desktop Support/EHSync Environmental Clearance — Southern California Edison, Multiple Counties, California
Bio and Wetlands SME (August 2022 – Ongoing) SCE Project planners/managers/personnel enter O&M projects in EHSync for environmental review if the project involves ground, vegetation, and/or overland travel disturbance activities. EHSync is used to manage the environmental review/support process. Cole acted as a bio and wetlands subject matter expert and was involved in writing and submitting desktop reviews within EHSync for a variety of Edison work.

Waters:

Aliso Creek at Trabuco Road Project — Orange County Public Works, Lake Forest, Orange County, California
Biologist (Jun 2021) The project will consist of repairing the eroded banks of Aliso Creek near Trabuco Road. Cole assisted with the delineation of U.S. Army Corps of Engineer (USACE), Regional Water Quality Control Board (RWQCB), and California Department of Fish and Wildlife (CDFW) jurisdictions in the study area.

* Project involves more than one type of work
Attachment C. Special-Status Plant Species Potential to Occur Table, City of Riverside Gateway Project
Common /
Scientific
Name
ªStatus
(Federal/
State/
CNPS/
MSHCP)
Habitat Description
⁺Habitat
Present
/Habitat
Absent
/Species
Present/Spe
cies Absent Rationale
San Diego
Ambrosia
(Ambrosia
pumila)
E/-/1B.1/
MSHCP
Occurs in open floodplain
terraces or in the watershed
margins of vernal pools. This
species occurs in a variety of
associations that are dominated
by sparse nonnative grasslands
or ruderal habitat in association
with river terraces, vernal pools,
and alkali playas. San Diego
ambrosia generally occurs at low
elevations generally less than
1,600 ft in the Riverside
populations and less than 600 ft
in San Diego County.

HP/A Suitable habitat is present
in the project area;
however, this species was
not detected in 2022 during
focused rare plant surveys
for the project.

Marsh Sandwort
(Arenaria
paludicola)
E/E/1B.1/- Occurs in wetland and
freshwater marshes and grows
up through dense mats of Typha
sp., Juncus spp. and Scirpus
spp. within freshwater marshes.

Elevation ranges from sea level
to 558 ft. Species was
historically documented within
the Santa Ana River; however,
the species is now believed to be
extirpated from southern
California (USFWS 2020).

HA/A Project area lacks suitable
freshwater marshes;
furthermore, this species is
considered extirpated from
southern California, and is
not expected to occur.

Nevin’s
Barberry
(Berberis
nevinii)
E/E/1B.1/
MSHCP
This evergreen shrub is very rare
and local; found on steep north
facing slopes or in low-grade
sandy washes in chaparral,
coastal sage scrub, riparian
scrub, and cismontane woodland
from 968 ft to 2700 ft. In western
Riverside County; known only in
the vicinity of Vail Lake and
Timoteo Canyon (USFW 2009).

HP/A This large evergreen
conspicuous species was
not detected during
surveys conducted in 2022
and is not expected to
occur.

Smooth
Tarplant
(Centromadia
pungens ssp.
laevis)
-/-/1B.1/
MSHCP
Found in fine or alkaline soils of
seasonally wet chenopod scrub,
meadows and seeps, playas,
riparian woodland, fallow fields,
drainage ditches, and moist
situations within valley and
foothill grasslands below about
1,575 ft elevation. Tolerant of
rural and agricultural land use.

Found primarily in southwestern
Riverside County, but also a few
sites in the interior valleys of San
Bernardino, Los Angeles, and
San Diego Counties.

HP/A Marginally suitable habitat
is present in project area
but generally lacks the
combination of suitable
mesic habitat and fine or
alkaline soils. A focused
rare plant survey was
performed in 2022, and the
species was not detected
within the project area.

Attachment C. Special-Status Plant Species Potential to Occur Table, City of Riverside Gateway Project
Salt Marsh
Bird’s-beak
(Chloropyron
maritimum ssp.
maritimum)

E/E/1B.2/- Occurs within coastal dunes, salt
marshes, and coastal swamps,
but has been documented inland
in the San Bernardino Valley
within alkaline meadows.

Elevations range from sea level
to 99 ft.

HA/A Suitable mesic alkaline
habitat is not present within
the project area. This
species is not expected to
occur within the project
area and was not detected
during surveys in 2022.

Peninsular
Spineflower
(Chorizanthe
leptotheca)
-/-
/4.2/MSH
CP
Found on alluvial fans and
granitic soils within chaparral,
coastal scrub, and lower
montane coniferous forests.

Elevations range from 980 to
6,235 ft and the species blooms
between May and August.

Closely related to and difficult to
distinguish from C. staticoides.

HP/A Suitable alluvial and
coastal scrub habitat is
present in the rare plant
study area. A focused rare
plant survey was
performed in 2022, and the
species was not detected
within the project area.

San Miguel
Savory
(Clinopodium
chandleri)
-/-/1B.2/
MSHCP
Associated with rocky, gabbroic,
and metavolcanic substrates in
valley and foothill grassland,
coastal sage scrub, chaparral,
cismontane woodland, and
riparian woodland. The majority
of populations and individuals
are associated with the Santa
Rosa Plateau and the Santa Ana
Mountains. Known from 3 miles
south of De Luz Road in the
Santa Ana Mountains and 3
miles southwest of Murrieta near
Warner’s Ranch. Expected
within the vicinity of the Santa
Rosa Plateau, the Hogbacks,
and the Santa Ana Mountains.

Elevation range for this species
is 65–3,530 ft, and blooming
period is from March to July.

HA/A Suitable habitats with
rocky, gabbroic or
metavolcanic soils are not
present in the project area.

This species is not
expected to occur within
the project area and was
not detected during
surveys in 2022.

Santa Ana River
Woollystar
(Eriastrum
densifolium ssp.
sanctorum)
E/E/1B.1/
MSHCP
A perennial herb known from a
single extended but heavily
fragmented population in
Riverside and San Bernardino
Counties; it formerly extended
into Orange County. An
inhabitant of alluvial fan sage
scrub in sandy to gravelly soils
and typically blooms during the
period of June through August.

Can be found from 450 to 2,000
ft.

P Santa Ana River woolly-
star is present within
alluvial scrub habitat
Tequesquite Extension
North (Figure 4a) portion of
the project area.

Southern
California Black
Walnut (Juglans
californica)
-/-/4.2/-
Found in alluvial areas within
chaparral, cismontane
woodlands, coastal scrub, and
riparian woodlands. Known to
occur between 160 and 2,955 ft,
and bloom from September to
May. Walnut forest is a much
fragmented, rare, and declining
vegetation community.

Threatened by urbanization,
P This species was observed
within the Camp Evans
portion of the project area
(Figure 4b).

Attachment C. Special-Status Plant Species Potential to Occur Table, City of Riverside Gateway Project
grazing, nonnative plants, and
possibly by lack of natural
reproduction.

Coulter’s
Goldfields
(Lasthenia
glabrata ssp.
coulteri)

-/-/1B.1/
MSHCP
Wide-ranging herb in southern
California, with known
occurrences including Los
Angeles, Orange, Riverside, San
Bernardino, and San Diego
Counties, among others. This is
an annual herb, blooming from
February through June.

Floodplains (seasonal wetlands)
dominated by alkali scrub, alkali
plays, vernal pools, and alkali
grasslands provide potential
habitat for this species. Found
on clay and alkaline, silty-clay
soils. In Riverside County,
primarily restricted to alkali
floodplains of the San Jacinto
River, Mystic Lake, and Salt
Creek in association with
Willows, Domino, and Traver
Soils. Also known in the alkali
flats between Alberhill and Lake
Elsinore. Found in grasslands,
playas, and vernal pools in these
areas, below about 4,002 feet.

HA/A Suitable mesic alkaline
habitat is not present within
the project area. This
species is not expected to
occur within the project
area and was not detected
during surveys in 2022.

Robinson's
Pepper-Grass
(Lepidium
virginicum var.
robinsonii)
-/-/1B.2/- Found in dry soils in chaparral
and coastal sage scrub openings
up to 3,100 ft.

HP/A Suitable habitat is present
in the project area within
coastal sage scrub.

A focused rare plant survey
was performed in 2022,
and the species was not
detected within the rare
plant study area.

Brand’s
Phacelia
(Phacelia
stellaris)
-/-/1B.1/
MSHCP
This species occurs within
coastal dunes and coastal scrub
habitats at elevations ranging
between 3 and 131 ft. Blooms
from March through June. The
last known documented
observation within Western
Riverside County for this species
was in 2019 where 1 individual
was detected within the Santa
Ana Wilderness Area (Biological
Monitoring Program 2020).

Suitable habitat for Brand’s
phacelia includes coastal dunes
and/or coastal scrub in sandy
openings, sandy benches,
dunes, sandy washes, or flood
plains of rivers and is restricted
to clay soils at elevations
between 0 and 1,350 ft.

HP/A Suitable sandy floodplain
habitat is present within the
rare plant study area.

A focused rare plant survey
was performed in 2022,
and the species was not
detected within the rare
plant study area.

Chaparral
Ragwort
-/-/2.2/- Found in chaparral, cismontane
woodland, and coastal scrub
HP/A Suitable habitat is present
in the project area.

Attachment C. Special-Status Plant Species Potential to Occur Table, City of Riverside Gateway Project
Senecio
aphanactis)
habitats from 49 to 2,625 ft. Also
associated with alkaline soils.

A focused rare plant survey
was performed in 2022,
and the species was not
detected.

Praire wedge
grass
(Spenopholis
obtusata)
-/-/2.2/- Found in meadows and seeps
and mesic sites within
cismontane woodlands from 985
to 6560 ft.

HP/A Suitable habitat is present
in the project area.

A focused rare plant survey
was performed in 2022,
and the species was not
detected.
a Status Codes
Federal
E = Federally listed; Endangered
PE = Proposed Endangered
T = Federally listed; Threatened

State
T = State listed; Endangered
E = State listed; Threatened
SC = State Candidate for Listing
R = Rare (Native Plant Protection Act)
CSC = California Species of Special Concern
CFP = California Fully Protected Species
MSHCP = Covered species

CNPS
1A = Plants presumed extinct in California
1B = Plants rare, threatened, or endangered in California and elsewhere 2 = Plants rare, threatened, or endangered in California, but more common elsewhere 3 = Plants about which we need more information
4 = Limited distribution (Watch List)

0.1 = Seriously endangered in California

+Habitat Presence/Absence Codes
P= The species is present.

HP=Habitat is or may be present. The species may be present.

HA= No habitat present and no further work needed.

A= This species is absent.

Work Cited
Biological Monitoring Program. 2020. Western Riverside County MSHCP Biological Monitoring Program 2019 Rare Plant Survey Report. Prepared for the Western Riverside County Multiple Species Habitat Conservation Plan. Riverside, CA.

Available:
2019 Rare Plants Report (wrc-rca.org). Accessed: April 2022.

U.S. Fish and Wildlife Service (USFWS). 2009. Berberis nevinii (Nevin’s barberry) 5-Year Review: Summary and Evaluation.

Carlsbad, CA: Carlsbad Fish and Wildlife Office.

U.S. Fish and Wildlife Service (USFWS). 2020. Arenaria paludicola (Marsh Sandwort) 5-Year Review: Summary and Evaluation. Ventura, CA: Ventura Fish and Wildlife Office.

Attachment D - Riverside Gateway Project: Plant Species List Scientific Name Common Name Special Status
FERNS
Equisetaceae - Horsetail family
Equisetum hyemale ssp. affine Winter horsetail

GYMNOSPERMS
Pinaceae - Pine family
Pinus pinea Italian stone pine

MAGNOLIIDS
Saururaceae - Lizard's-tail family
Anemopsis californica Yerba mansa

EUDICOTS
Adoxaceae - Muskroot family
Sambucus nigra ssp. caerulea Blue elderberry
Anacardiaceae - Sumac Or Cashew family
Pistacia chinensis Chinese pistachio *
Schinus molle Peruvian pepper tree *
Schinus polygamus Chilean pepper tree *
Schinus terebinthifolius Brazilian pepper tree *
Toxicodendron diversilobum Western poison oak
Apiaceae - Carrot family
Anthriscus caucalis Bur-chervil *
Conium maculatum Poison hemlock *
Apocynaceae - Dogbane family
Nerium oleander Oleander *
Asteraceae - Sunflower family
Ambrosia acanthicarpa Annual bur-sage
Ambrosia psilostachya Western ragweed
Artemisia californica California sagebrush
Artemisia douglasiana Douglass' sagebrush
Artemisia dracunculus Tarragon sagebrush
Artemisia tridentata ssp. tridentata Big sagebrush
Baccharis salicifolia ssp. salicifolia Mule fat
Baccharis salicina Emory's baccharis
Baccharis sarothroides Broom baccharis
Carduus pycnocephalus ssp. pycnocephalus Italian thistle * Scientific Name Common Name Special Status
Centaurea melitensis Tocalote *
Cirsium vulgare Bull thistle *
Corethrogyne filaginifolia Common sand aster
Encelia farinosa Brittlebush
Erigeron canadensis Horseweed
Erigeron foliosus var. foliosus Leafy daisy
Eriophyllum confertiflorum Golden woolly sunflower
Helianthus annuus Annual sunflower
Helminthotheca echioides Bristly ox-tongue *
Heterotheca grandiflora Telegraph weed
Hypochaeris glabra Smooth cat's-ear *
Lactuca serriola Prickly lettuce *
Logfia gallica French cottonrose *
Oncosiphon piluliferum Stinknet *
Pluchea sericea Arrow-weed
Pseudognaphalium californicum California everlasting
Pulicaria paludosa Spanish false fleabane *
Sonchus asper ssp. asper Prickly sow thistle *
Sonchus oleraceus Common sow thistle *
Stephanomeria virgata Rod wire-lettuce
Stephanomeria virgata ssp. virgata Rod wire-lettuce
Uropappus lindleyi Silver puffs
Verbesina encelioides ssp. exauriculata Golden crownbeard * Xanthium strumarium Cocklebur
Boraginaceae - Borage family
Amsinckia intermedia Common fiddleneck
Cryptantha intermedia var. intermedia Nievitas Cryptantha Cryptantha sp. Cryptantha
Eriodictyon trichocalyx Hairy yerba santa
Heliotropium curassavicum var. oculatum Alkali heliotrope Phacelia distans Wild heliotrope phacelia
Phacelia ramosissima Branching phacelia
Brassicaceae - Mustard family
Brassica nigra Black mustard *
Scientific Name Common Name Special Status
Hirschfeldia incana Shortpod mustard *
Lepidium latifolium Perennial pepper-grass *
Raphanus raphanistrum Jointed charlock *
Raphanus sativus Radish *
Sisymbrium altissimum Tumble mustard *
Sisymbrium irio London rocket *
Cactaceae - Cactus family
Cylindropuntia californica var. parkeri Cane cholla
Opuntia ficus-indica Mission prickly pear *
Opuntia littoralis Coastal prickly pear
Caryophyllaceae - Pink family
Spergularia rubra Red sand-spurrey *
Chenopodiaceae - Goosefoot family
Atriplex canescens Four-wing saltbush
Atriplex semibaccata Australian saltbush *
Bassia hyssopifolia Fivehorn smotherweed *
Chenopodium album Lamb's quarters *
Kochia americana American Fireweed
Salsola tragus Prickly russian thistle *
Convolvulaceae - Morning-glory family
Cuscuta californica Chaparral dodder
Cuscuta californica var. californica Chaparral dodder
Cucurbitaceae - Gourd family
Cucurbita palmata Coyote melon
Marah macrocarpa Large fruit wild cucumber
Euphorbiaceae - Spurge family
Croton californicus California croton
Croton setigerus Doveweed
Euphorbia maculata Spotted spurge *
Euphorbia polycarpa Many seed spurge
Ricinus communis Castorbean *
Fabaceae - Legume family
Acmispon americanus var. americanus Spanish-Clover
Acmispon glaber Deerweed
Acmispon strigosus Strigose lotus
Scientific Name Common Name Special Status
Amorpha fruticosa Desert false indigo
Astragalus douglasii var. parishii Parish's milkvetch
Lupinus bicolor Miniature lupine
Lupinus hirsutissimus Stinging lupine
Melilotus albus White sweetclover *
Melilotus indicus Indian sweetclover *
Parkinsonia aculeata Mexican palo verde *
Robinia pseudoacacia Black locust *
Trifolium hirtum Rose clover *
Vicia villosa Winter vetch *
Fagaceae - Oak family
Quercus agrifolia Coast live oak
Hamamelidaceae - Witch Hazel family
Liquidsambar styraciflua Liquid Amber *
Juglandaceae - Walnut family
Carya illinoinensis Pecan *
Juglans californica Southern California black walnut CRPR 4.2 Lamiaceae - Mint family
Lamium amplexicaule Henbit *
Marrubium vulgare Horehound *
Salvia apiana White sage
Malvaceae - Mallow family
Malva parviflora Cheeseweed *
Montiaceae - Purslane family
Claytonia perfoliata Round leaf miner's lettuce
Moraceae - Mulberry family
Ficus carica Edible fig *
Morus alba White mulberry *
Myrsinaceae - Myrsine family
Anagallis arvensis Scarlet pimpernel *
Myrtaceae - Myrtle family
Eucalyptus camaldulensis Red gum *
Eucalyptus globulus Blue gum *
Oleaceae - Olive family
Fraxinus uhdei Shamel Ash
Scientific Name Common Name Special Status
Fraxinus velutina Velvet ash
Olea europaea Olive *
Onagraceae - Evening Primrose family
Camissoniopsis bistorta California sun cup
Oenothera elata Great marsh evening primrose
Papaveraceae - Poppy family
Eschscholzia californica California poppy
Plantaginaceae - Plantain family
Plantago lanceolata English plantain *
Platanaceae - Plane Tree, Sycamore family
Platanus racemosa Western sycamore
Polemoniaceae - Phlox family
Eriastrum densifolium ssp. sanctorum Santa Ana River woollystar FE, SE, CRPR 1B.1 Gilia diegensis San Diego gilia
Polygonaceae - Buckwheat family
Eriogonum fasciculatum California buckwheat
Eriogonum thurberi Thurber's buckwheat
Rumex conglomeratus Clustered dock *
Rumex crispus Curly dock *
Rosaceae - Rose family
Heteromeles arbutifolia Toyon
Prunus ilicifolia Holly leaf cherry
Rosa californica California rose
Rubus ursinus California blackberry
Rubiaceae - Madder family
Galium aparine Common bedstraw
Salicaceae - Willow family
Populus fremontii ssp. fremontii Fremont cottonwood
Salix exigua Sand bar willow
Salix gooddingii Goodding's black willow
Salix laevigata Red willow
Salix lasiolepis Arroyo willow
Simaroubaceae - Quassia Or Simarouba family
Ailanthus altissima Tree of heaven *
Solanaceae - Nightshade family
Datura wrightii Wright's jimsonweed
Scientific Name Common Name Special Status
Nicotiana glauca Tree tobacco *
Solanum douglasii Douglas' nightshade
Tamaricaceae - Tamarisk family
Tamarix aphylla Athel tamarix *
Tamarix chinensis Chinese tamarix *
Urticaceae - Nettle family
Urtica dioica Stinging nettle
Urtica urens Dwarf nettle *
Vitaceae - Grape family
Vitis girdiana Desert wild grape
Zygophyllaceae - Caltrop family
Tribulus terrestris Puncturevine *

MONOCOTS
Agavaceae - Century Plant family
Agave americana American century plant *
Hesperoyucca whipplei Chaparral yucca
Yucca gloriosa Garden yucca *
Arecaceae - Palm family
Phoenix canariensis Canary Island palm *
Washingtonia robusta Mexican fan palm *
Cyperaceae - Sedge family
Cyperus involucratus Umbrella flatsedge *
Schoenoplectus californicus California bulrush
Juncaceae - Rush family
Juncus mexicanus Mexican rush
Juncus sp. Rush
Poaceae - Grass family
Arundo donax Giant reed *
Avena barbata Slender wild oat *
Bromus diandrus Ripgut brome *
Bromus hordeaceus Soft brome *
Bromus madritensis Compact brome *
Cortaderia selloana Pampas grass *
Cynodon dactylon Bermuda grass *
Distichlis spicata Salt grass
Scientific Name Common Name Special Status
Ehrharta calycina Perennial veldt grass *
Festuca myuros Rattail fescue *
Festuca perennis Rye grass *
Hordeum jubatum ssp. jubatum Foxtail barley
Hordeum murinum Wall barley *
Melica imperfecta Coast range onion grass
Polypogon monspeliensis Rabbit foot beard grass *
Schismus barbatus Mediterranean schismus *
Stipa cernua Nodding needle grass
Stipa miliacea var. miliacea Smilo grass *
Themidaceae - Brodiaea family
Dichelostemma capitatum Blue dicks
Typhaceae - Cattail family
Typha latifolia Broad-leaved cattail
Legend
Special Status:

Federal:

FE = Endangered
FT = Threatened
State:

SE = Endangered
ST =Threatened
*= Non‐native or invasive species
CRPR – California Rare Plant Rank
1A. Presumed extinct in California and elsewhere
1B. Rare or Endangered in California and elsewhere
2A. Presumed extinct in California, more common elsewhere 2B. Rare or Endangered in California, mo
re  common elsewhere

3. Plants for which we need more information ‐ Review list

4. Plants of limited distribution ‐ Watch list
Threat Ranks
.1 ‐ Seriously endangered in California
.2 – Fairly endangered in California
.3 – Not very endangered in California

Appendix F
Focused Surveys for Western Burrowing Owl

525 B Street, Suite 1700, San Diego, CA 92101 USA +1.858.578.8964 +1.844.545.2301 fax icf.com

December 2, 2022
Matt Romero, ASLA
Senior Associate
Studio MLA
251 South Mission Road
Los Angeles, CA 90033
Subject: Burrowing Owl Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
Dear Mr. Romero:

This report documents the findings of a focused survey effort to determine presence or absence of burrowing owl (Athene cunicularia) in support of the Riverside Gateway Project (Project) proposed by the City of Riverside Parks, Recreation, and Community Services Department (PRCSD) in the City of Riverside, Riverside County, California (Figure 1). This effort was performed under the survey guidelines of the Western Riverside County Multiple Species Habitat Conservation Plan (MSHCP), as implemented by the City of Riverside. Portions of the Project falls within the MSHCP habitat assessment area for burrowing owl. Focused surveys were conducted by ICF International (ICF) biologists in July and August 2022.

Project Description
The Project involves a multidisciplinary effort for the planning, design, engineering, and associated community outreach and environmental compliance for California Environmental Quality Act (CEQA) review for nine identified park sites in the City, in Riverside County, California. The Santa Ana River Trail, adjacent to the Santa Ana River, is completed throughout its length in the City. After completing the 2018 update to the Citywide Parks System Master Plan, the PRCSD proposes to complete planning and design for improvements and enhancement to existing and proposed park areas located along the Santa Ana River and the 4.7 miles of the Santa Ana River Parkway from Fairmount Park to Martha McLean Anza Narrows Park. These park sites were initially identified as part of the planning process in development of the Santa Ana River Parkway and Open Space Plan completed in 2018. Development of these park sites would comply with the City’s overarching goal to “put the river back into Riverside” by providing diverse recreational and educational opportunities, access to open space, and restoration of natural habitat for people and wildlife.

The entire 11-mile northern edge of the City fronts the Santa Ana River. In Riverside, the Santa Ana River is a juxtaposition of a natural and scenic riparian corridor running through an urban setting.

The Santa Ana River is a vital resource in the City, and it supports several important functions for the City, including providing natural habitat that serves wildlife, recharging the groundwater basin Burrowing Owl Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

that supplies water to residences and businesses, and providing recreational opportunities to connect people to natural resources. There is also a need to provide no-cost and low-cost parks and recreational resources, open space access, and active transportation resources to support the disadvantaged communities identified near the project area in the City.

Conceptual improvement and engagement opportunities have been identified for each of the nine individual park sites, including, but not limited to, habitat conservation areas, woodland restoration, parking lots, an amphitheater, restroom and drinking water facilities, nature trails, active recreation and exercise stations, passive park amenities, camping, picnic areas, community garden and incubator farm, vista points, public art, interpretive and wayfinding signage, landscaping, irrigation, lighting, shade enhancements, equestrian facilities, and bicycle repair station and bike racks, among others. The nine park sites in the City are (1) Camp Evans; (2) Loring Park; (3) Carlson Park; (4) St.

Francis Falls; (5) Santa Ana River Greenway; (6) Tequesquite Extension North; (7) Tequesquite Extension South; (8) Martha McLean Anza Narrows Park; and (9) Jurupa Avenue Trailhead, shown on Figure 2 (Appendix A).

The Project is a forward-looking proposal to recover, reconceive and re-engage with the Santa Ana River to deliver ecological, recreational, cultural, social, and economic value to the City’s inhabitants.

The Project is funded by a grant provided by the State Coastal Conservancy, a California state agency established in 1976 to protect and improve natural lands and waterways, help people get to and enjoy the outdoors, and sustain local economies along California’s coast. The State Coastal Conservancy acts with others to protect, restore, and increase public access to California’s coast, ocean, coastal watersheds, and the San Francisco Bay Area. Its vision is of a beautiful, restored, and accessible coast for current and future generations of Californians.

Location
The Project is along the southern side of the Santa Ana River floodplain in the City, in Riverside County, California, shown on Figure 2 (Appendix A). Portions of the Project that fall within MSHCP burrowing owl survey area include Jurupa Avenue Trailhead, Santa Ana River Greenway, Tequesquite Extension South, Tequesquite Extension North, Carlson Park and St. Francis Falls, and Camp Evans, shown on Figures 3a–3c (Appendix A).

The burrowing owl survey area is depicted within Township 2 South, Range 6 West, Sections 25 and Unsectioned areas around Mount Rubidoux in Township 2 South, Range 5 West of the Riverside West, California, U.S. Geological Survey 7.5-minute quadrangle map (USGS 2022).

Survey Area
The burrowing owl survey area includes all portions of the Project limits that fall within the MSHCP burrowing owl survey area, plus an additional 500-feet where the MSHCP burrowing owl survey area extends beyond the project limits, shown on Figures 3a–3c (Appendix A). No areas outside the MSHCP burrowing owl survey area were surveyed.

Some portions of the Project’s burrowing owl survey area provided suitable conditions for burrowing owl in the form of open areas, bare ground, or low-growing vegetation and numerous Burrowing Owl Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

potentially suitable burrowing features. such as California ground squirrel burrows, debris piles, and piles of boulders associated with erosion-control riprap. Dominant vegetation communities within these suitable areas included nonnative grassland, disturbed, Russia thistle–five hook bassia fields, ruderal upland mustard and forbs, and California croton scrub.

Other portions of the Project’s burrowing owl survey area were lacking suitable conditions for burrowing owl because these areas consisted of dense tree and/or shrub cover with little-to-no potentially suitable burrowing features. Dominant vegetation communities exhibiting poor burrowing owl conditions included riparian communities such as Arrow Weed Scrub, Southern Arroyo Willow Riparian Forest, Mulefat Scrub, Southern Riparian Woodland, Black Willow Riparian Woodland, Southern Cottonwood–Willow Riparian Forest, and non-native riparian communities dominated by Mexican fan palm (Washingtonia robusta), giant reed (Arundo donax), athel (Tamarix aphylla), or Tree-of-Heaven (Ailanthus altissima). Specifically, riparian areas associated with Camp Evans, Jurupa Avenue Trailhead, Santa Ana River Greenway, and Tequesquite Extension North.

Representative photographs of the survey area are provided in Appendix B.

Survey Methods
Surveys for burrowing owl followed the Burrowing Owl Survey Instructions for the Western Riverside Multiple Species Habitat Conservation Plan Area (County of Riverside Environmental Programs Department 2006). Under the MSCHP, the focused survey protocol was split in two parts:
(a) Focused Burrow Survey; and (b) Focused Burrowing Owl Survey. The work was conducted during the breeding season as defined under the MSCHP (March 1 to August 31). All work was conducted during weather that was conducive to observing owls outside their burrows and detecting burrowing owl sign. Surveys were not performed within 5 days following rain, during rain, high winds (i.e., >20 miles per hour), and dense fog, nor when temperatures exceeded 90 degrees Fahrenheit. For Part B, surveys were conducted in the morning between 1 hour before sunrise and 2 hours after sunrise.

The entire burrowing owl survey area consisted of approximately 492 acres. As a result, the survey area was separated into three manageable survey units, referred to as Area A, Area B, and Area C, shown in Figures 3a–3c (Appendix A). Burrowing owl survey Area A consisted of approximately 141 acres, Area B approximately 197 acres, and Area C approximately 153 acres.

Part A. Focused Burrow Survey
A systematic survey for burrows, including burrowing owl sign, was conducted by walking through potentially suitable habitat over the entire survey area (i.e., the project site and 500-foot buffer).

Transects were walked to allow 100-percent visual coverage of the ground surface. The distance between transect center lines was no more than 30 meters (approximately 100 feet) and was reduced to account for differences in terrain, vegetation density, and ground-surface visibility. The locations of all suitable burrowing owl habitat, potential owl burrows, burrowing owl sign, and any owls observed were recorded and mapped, including GPS coordinates, on the ESRI Field Maps mobile application. Natural or human-made structures and debris piles that could potentially support burrowing owls also were noted and mapped.

Burrowing Owl Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Part B. Focused Burrowing Owl Surveys
The focused surveys consisted of site visits on four separate days. The first was conducted concurrently with Part A. All potentially suitable habitat, as well as mapped burrows and known locations of owl sign and perch locations (if any), were scanned using binoculars. Part B activities occurred prior to any walking of transects associated with Part A. Once this had been completed, a survey for owls and owl sign was conducted by walking through suitable habitat within the entire project limits and all areas within 150 meters (approximately 500 feet) of the project limits. These pedestrian surveys followed transects spaced to allow 100-percent visual coverage of the ground surface and spaced no more than 30 meters (approximately 100 feet) apart. For potentially suitable habitat within the 150-meter buffer for which legal access had not been acquired, binoculars were used to determine if owls were present.

Results
The findings of the Part A focused burrow survey revealed the Project’s burrowing owl survey areas provide suitable conditions for burrowing owl. All observed California ground squirrel burrows, potential perches, debris piles, and suitable rip-rap located within the survey areas were mapped and thoroughly inspected (where access to those features was obtained) for burrowing owl sign.

Figures 4a to 4c (Appendix A) depict survey boundaries and locations of observed potential burrowing features. Table 1 provides the focused burrow survey dates, personnel, and weather conditions. Appendix C provides a list of wildlife species detected during the surveys.

Table 1. Focused Burrow Survey Dates, Personnel, and Weather Conditions Survey
Area Visit # Date Time Personnel Conditions
A 1 7/5/22 0830–1430 Phil Richard
Cole Sutter
Vincent Baker
Brian Cropper
75–86°F, winds 1–4 mph, clear,
good visibility
B 1 7/6/22 0830–1345 Phil Richards
Vincent Baker
Garrett Moss
Brian Cropper
76–85°F, winds 1–4 mph, clear,
good visibility
C 1 7/14/22 0830–1300 Phil Richards
Vincent Baker
Garrett Moss
72–88°F, winds 1–6 mph, clear,
good visibility
°F = degrees Fahrenheit; mph = miles per hour.

The results of the Part B focused burrowing owl survey yielded no burrowing owls or potential burrowing owl sign (e.g., white wash, feathers, pellets, or tracks) within the Project’s burrowing owl survey areas. Table 2 provides the focused burrowing owl survey dates, personnel, and weather conditions.

Burrowing Owl Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Table 2. Focused Burrowing Owl Survey Dates, Personnel, and Weather Conditions Survey
Area Visit # Date Time Personnel Conditions
A 1 7/5/22 0535–0740 Phil Richard
Cole Sutter
Vincent Baker
61–70°F, winds 1–4 mph, clear,
good visibility
A 2 7/18/22 0540–0750 Phil Richards
Cole Sutter
73–74°F, winds 1–2 mph, partly
cloudy, good visibility
A 3 7/28/22 0545–0800 Phil Richards
Vincent Baker
66–68°F, winds 0–3 mph, partly
cloudy, good visibility
A 4 8/09/22 0555–0800 Phil Richards
James Hickman
74–75°F, winds 0–2 mph, partly
cloudy, good visibility
B 1 7/6/22 0540–0745 Phil Richards
Vincent Baker
63–71°F, winds 1–3 mph, clear,
good visibility
B 2 7/19/22 0530–0750 Phil Richards
Vincent Baker
70–76°F, winds 0–2 mph, clear,
good visibility
B 3 8/2/22 0550–0800 Phil Richards
James Hickman
71–73°F, winds 0–3 mph, clear,
good visibility
B 4 8/11/22 0615–0805 Phil Richards
Vincent Baker
69–76°F, winds 0–3 mph, clear,
good visibility
C 1 7/14/22 0550–0750 Phil Richards
Vincent Baker
65–68°F, winds 1–4 mph, clear,
good visibility
C 2 7/26/22 0530–0755 Phil Richards
Cole Sutter
66–68°F, winds 0–3 mph, clear,
good visibility
C 3 8/4/22 0550–0800 Phil Richards
James Hickman
72–74°F, winds 0–3 mph, clear,
good visibility
C 4 8/23/22 0615–0810 Phil Richards
Vincent Baker
69–71°F, winds 0–3 mph, clear,
good visibility
°F = degrees Fahrenheit; mph = miles per hour.

If you have questions or need clarification regarding this report, please contact the lead biologist at (949) 333-6643 or [email protected].

Sincerely,

Phillip Richards
ICF Biologist

Enclosed:

Appendix A: Figures
Appendix B: Site Photographs
Appendix C: Wildlife Species Detected
Appendix D: Certification Statement

Burrowing Owl Focused Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Literature Cited
County of Riverside Environmental Programs Department. 2006. Burrowing Owl Survey Instructions for the Western Riverside Multiple Species Habitat Conservation Plan Area, March 29, 2006.

U.S. Geological Survey (USGS). 2022. Geographic Names Information System. Available:
https://www.usgs.gov/the-national-map-data-delivery. Accessed: November 9, 2022.

Appendix A
Figures
Martha McLean
5200
Tequesquite
St. Francis
Falls
Jurupa Ave.

Trailhead
Loring Park
Tequesquite
North
Extension
Tequesquite
South
ExtensionSanta Ana
River
Greenway
Santa Ana
River
Greenway
Camp Evans
187
443
534
617
621
Figure 1
Project Overview
Riverside Gateway
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Feet
Legend
Riverside Gateway Project Limits
WRMSHCP Units
Criteria Area Cells
Riverside County Core Linkage
Public/Quasi-public Conserved
Lands
Source: ICF, USFWS, USGS; CNDDB 2019
1:26,000
[
N

Figure 2a
Burrowing Owl 2022 Survey Area A
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\BUOW\2_BUOW_SurveyArea_.mxd; User: 38834; Date: 10/11/2022 0 1,600800
Feet
Legend
Burrowing Owl Survey Area A
Burrowing Owl Survey Area B
Survey Area 500-foot Buffers
WRMSHCP Units
Burrowing Owl Survey Area
Source: ICF, USFWS, USGS; CNDDB 2019
1:20,000
[
N

Figure 2b
Burrowing Owl 2022 Survey Area B
Riverside Gateway
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Feet
Legend
Burrowing Owl Survey Area A
Burrowing Owl Survey Area B
Burrowing Owl Survey Area C
Survey Area 500-foot Buffers
WRMSHCP Units
Burrowing Owl Survey Area
Source: ICF, USFWS, USGS; CNDDB 2019
1:8,400
[
N

Figure 2c
Burrowing Owl 2022 Survey Area C
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\BUOW\2_BUOW_SurveyArea_.mxd; User: 38834; Date: 10/11/2022 0 700350
Feet
Legend
Burrowing Owl Survey Area B
Burrowing Owl Survey Area C
Survey Area 500-foot Buffers
WRMSHCP Units
Burrowing Owl Survey Area
Source: ICF, USFWS, USGS; CNDDB 2019
1:8,400
[
N

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Figure 3a
Burrowing Owl 2022 Survey Results - Area A
Riverside Gateway
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Feet
Legend
!( Potential BUOW Features
Burrowing Owl Survey Area A
Burrowing Owl Survey Area B
Survey Area 500-foot Buffers
Source: ICF, USFWS, USGS; CNDDB 2019
1:20,000
[
N

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Figure 3b
Burrowing Owl 2022 Survey Results - Area B
Riverside Gateway
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Feet
Legend
!( Potential BUOW Features
Potential BUOW Features
Burrowing Owl Survey Area A
Burrowing Owl Survey Area B
Burrowing Owl Survey Area C
Survey Area 500-foot Buffers
Source: ICF, USFWS, USGS; CNDDB 2019
1:8,400
[
N

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Figure 3c
Burrowing Owl 2022 Survey Results - Area C
Riverside Gateway
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Feet
Legend
!( Potential BUOW Features
Potential BUOW Features
Burrowing Owl Survey Area B
Burrowing Owl Survey Area C
Survey Area 500-foot Buffers
Source: ICF, USFWS, USGS; CNDDB 2019
1:8,400
[
N

Appendix B
Site Photographs
Appendix A. Site Photos
City of Riverside Gateway Project 1
Photograph: 1
Phot
o Date: July 5, 2022
Location:

Area A – Jurupa Ave.

Trailhead, south side of
Jurupa Ave.

Dir
ection: View facing southeast
Com
ment: Photo depicts existing
conditions at the time of the survey
Photograph: 2
Phot
o Date: July 5, 2022
Location:

Area A – Jurupa Ave.

Trailhead, north side of
Jurupa Ave.

Dir
ection: View facing north
Com
ment: Photo depicts existing
conditions at the time of the survey
Photograph: 3
Phot
o Date: October 20, 2020
Location:

Area A – Jurupa Ave.

Trailhead, north side of
Jurupa Ave.

Dir
ection: View facing northwest
Com
ment: Photo depicts existing
conditions at the time of the survey
Appendix A. Site Photos
City of Riverside Gateway Project 2
Photograph: 4
Phot
o Date: July 5, 2022
Location:

Area A – Santa Ana River
Greenway (south)
Dir
ection: View facing southwest
Com
ment: Photo depicts existing
conditions at the time of the survey
Photograph: 5
Phot
o Date: July 5, 2022
Location: Area A – west end of
Tequesquite South Extension.

Dir
ection: View facing north
Com
ment: Photo depicts existing
conditions at the time of the survey
Photograph: 6
Phot
o Date: July 5, 2022
Location: Area A – center part of
Tequesquite South Extension.

Direct
ion: View facing southwest
Com
ment: Photo depicts existing
conditions at the time of the survey
Appendix A. Site Photos
City of Riverside Gateway Project 3
Photograph: 7
Phot
o Date: July 5, 2022
Location:

Area A – northeast part of
Tequesquite South Extension
Dir
ection: View facing southwest
Com
ment: Photo depicts existing
conditions at the time of the survey
Photograph: 8
Phot
o Date: July 5, 2022
Location:

Area A – east end of
Tequesquite South Extension
Dir
ection: View facing north
Com
ment: Photo depicts existing
conditions at the time of the survey
Photograph: 9
Phot
o Date: July 6, 2022
Location:

Area B – southwest corner of
Tequesquite North Extension
Dir
ection: View facing northwest
Com
ment: Photo depicts existing
conditions at the time of the survey
Appendix A. Site Photos
City of Riverside Gateway Project 4
Photograph: 10
Phot
o Date: July 6, 2022
Location:

Area B – south end of
Tequesquite North Extension
Dir
ection: View facing west
Com
ment: Photo depicts existing
conditions at the time of the
survey
Photograph: 11
Phot
o Date: July 6, 2022
Location:

Area B – center part of
Tequesquite North Extension
Dir
ection: View facing northeast
Comm
ent: Photo depicts existing
conditions at the time of the
survey
Photograph: 12
Phot
o Date: July 6, 2022
Location:

Area B – north end of
Tequesquite North Extension
Dir
ection: View facing southeast
Com
ment: Photo depicts existing
conditions at the time of the
survey
Appendix A. Site Photos
City of Riverside Gateway Project 5
Photograph: 13
Phot
o Date: July 14, 2022
Location:

Area C – south end of Camp
Evans along existing paved
bike trail
Dir
ection: View facing northeast
Comm
ent: Photo depicts existing
conditions at the time of the
survey
Photograph: 14
Phot
o Date: July 14, 2022
Location:

Area C – center part of Camp
Evans along existing paved
bike trail
Dir
ection: View facing southwest
Com
ment: Photo depicts existing
conditions at the time of the
survey
Photograph: 15
Phot
o Date: July 14, 2022
Location:

Are a C – south end of Camp
Evans along existing paved
bike trail
Dir
ection: View facing northwest
Com
ment: Photo depicts existing
conditions at the time of the
survey
Appendix A. Site Photos
City of Riverside Gateway Project 6
Photograph: 16
Phot
o Date: July 14, 2022
Location:

Area C – north end of Camp
Evans
Dir
ection: View facing southwest
Com
ment: Photo depicts existing
conditions at the time of the
survey
Photograph: 17
Phot
o Date: July 14, 2022
Location:

Area C – center part of Camp
Evans
Dir
ection: View facing northeast
Com
ment: Photo depicts existing
conditions at the time of the
survey
Photograph: 18
Phot
o Date: July 14, 2022
Location:

Area C – center part of Camp
Evans
Dir
ection: View facing southwest
Com
ment: Photo depicts existing
conditions at the time of the
survey
Appendix C
Wildlife Species Detected
Wildlife Species DetectedAppendix B.

Scientific Name Common Name Special Status

VERTEBRATES
Reptiles
Phrynosomatidae ‐ Spiny Lizard Family
Sceloporus occidentalis Western Fence Lizard
Birds
Anatidae ‐ Swan, Goose, and Duck Family
Anas platyrhynchos Mallard
Ardeidae ‐ Heron Family
Ardea herodias Great Blue Heron
Ardea alba Great Egret
Egretta thula Snowy Egret
Threskiornithidae ‐ Ibis Family
Plegadis chihi White‐faced Ibis
Cathartidae ‐ New World Vulture Family
Cathartes aura Turkey Vulture
Accipitridae ‐ Hawk Family
Accipiter cooperii Cooper's Hawk
Buteo lineatus Red‐shouldered Hawk
Buteo jamaicensis Red‐tailed Hawk
Charadriidae ‐ Plover Family
Charadrius vociferus Killdeer
Columbidae ‐ Pigeon and Dove Family
Patagioenas fasciata Band‐tailed Pigeon
*Streptopelia decaocto Eurasian Collared‐Dove
Zenaida macroura Mourning Dove
Columbina passerina Common Ground‐Dove
Cuculidae ‐ Cuckoo and Roadrunner Family
Geococcyx californianus Greater Roadrunner
Strigidae ‐ Typical Owl Family
Bubo virginianus Great Horned Owl
Apodidae ‐ Swift Family
Aeronautes saxatalis White‐throated Swift
Trochilidae ‐ Hummingbird Family
Calypte anna Anna's Hummingbird
Calypte costae Costa's Hummingbird
Scientific Name Common Name Special Status
Selasphorus sasin
Picidae ‐ Woodpecker Family
Melanerpes formicivorus
Picoides nuttallii
Picoides pubescens
Colaptes chrysoides
Falconidae ‐ Falcon Family
Falco sparverius
Tyrannidae ‐ Tyrant Flycatcher Family
Sayornis nigricans
Sayornis saya
Myiarchus cinerascens
Tyrannus vociferans
Tyrannus verticalis
Vireonidae ‐ Vireo Family
Vireo bellii pusillus FE, SE
Vireo gilvus
Corvidae ‐ Jay and Crow Family
Aphelocoma californica
Corvus brachyrhynchos
Corvus corax
Alaudidae ‐ Lark Family
Eremophila alpestris
Hirundinidae ‐ Swallow Family
Stelgidopteryx serripennis
Petrochelidon pyrrhonota
Hirundo rustica
Aegithalidae ‐ Bushtit Family
Psaltriparus minimus
Troglodytidae ‐ Wren Family
Salpinctes obsoletus
Catherpes mexicanus
Troglodytes aedon
Thryomanes bewickii
Regulidae ‐ Kinglet Family
Regulus calendula
Allen's Hummingbird
Acorn Woodpecker
Nuttall's Woodpecker
Downy Woodpecker
Northern Flicker
American Kestrel
Black Phoebe
Say's Phoebe
Ash‐throated Flycatcher
Cassin's Kingbird
Western Kingbird
Least Bell's Vireo
Warbling Vireo
California Scrub‐Jay
American Crow
Common Raven
Horned Lark
Northern Rough‐winged Swallow
Cliff Swallow
Barn Swallow
Bushtit
Rock Wren
Canyon Wren
House Wren
Bewick's Wren
Ruby‐crowned Kinglet
Scientific Name Common Name Special Status
Turdidae ‐ Thrush Family
Sialia mexicana Western Bluebird
Mimidae ‐ Thrasher Family
Toxostoma redivivum California Thrasher
Mimus polyglottos Northern Mockingbird
Sturnidae ‐ Starling Family
*Sturnus vulgaris European Starling
Motacillidae ‐ Pipit and Wagtail Family
Anthus rufescens American Pipit
Ptilogonatidae ‐ Silky‐flycatcher Family
Phainopepla nitens Phainopepla
Parulidae ‐ Wood‐Warbler Family
Geothlypis trichas Common Yellowthroat
Setophaga petechia Yellow Warbler CSC
Setophaga coronata Yellow‐rumped Warbler
Setophaga townsendi Townsend's Warbler
Cardellina pusilla Wilson's Warbler
Icteria virens Yellow‐breasted Chat CSC
Emberizidae ‐ Sparrow Family
Pipilo maculatus Spotted Towhee
Melozone crissalis California Towhee
Melospiza melodia Song Sparrow
Melospiza lincolnii Lincoln's Sparrow
Junco hyemalis Dark‐eyed Junco
Cardinalidae ‐ Cardinals, Grosbeaks and Allies Family
Pheucticus melanocephalus Black‐headed Grosbeak
Passerina caerulea Blue Grosbeak
Passerina amoena Lazuli Bunting
Icteridae ‐ Blackbird, Cowbird and Oriole Family
Sturnella neglecta Western Meadowlark
*Molothrus ater Brown‐headed Cowbird
Icterus cucullatus Hooded Oriole
Icterus bullockii Bullock’s Oriole
Fringillidae ‐ Finch Family
Haemorhous mexicanus House Finch
Carduelis psaltria Lesser Goldfinch
Scientific Name Common Name Special Status
Carduelis tristis American Goldfinch
Mammals
Leporidae ‐ Hare and Rabbit Family
Sylvilagus audubonii Desert Cottontail
Sciuridae ‐ Squirrel Family
Ostospermophilus beecheyi California Ground Squirrel
Canidae ‐ Canid Family
Canis latrans Coyote
Felidae ‐ Cat Family
Lynx rufus Bobcat
Legend
Special Status:

Federal:

FE = Endangered
FT = Threatened
State:

SE = Endangered
ST =Threatened
CSC = California Species of Special Concern
CFP = California Fully Protected Species
*= Non‐native or invasive species
Appendix D
Certification Statement

I certify that the information contained in this survey report and attached exhibits fully and accurately represents my work. Should you have any questions regarding the methodology or findings in this report, please do not hesitate to contact Phillip C. Richards by email ([email protected]) or call (949) 333-6643.

Sincerely,

Phillip C. Richards
Biologist
ICF International

Appendix G
Surveys for Southwestern Willow Flycatcher

525 B Street, Suite 1700, San Diego, CA 92101 USA +1.858.578.8964 +1.844.545.2301 fax icf.com

December 2, 2022
Matt Romero
Senior Associate
Studio MLA
251 South Mission Road
Los Angeles, CA 90033
Subject: Protocol Southwestern Willow Flycatcher and Least Bell’s Vireo Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
Dear Mr. Romero:

This report documents the findings of protocol southwestern willow flycatcher (Empidonax traillii extimus) and least Bell’s vireo (Vireo bellii pusillus) surveys in support of the Riverside Gateway Project (Project) proposed by the City of Riverside Parks, Recreation, and Community Services Department (PRCSD) in the City of Riverside (City), Riverside County, California (Appendix A, Figure 1). Based on the availability of suitable habitat and lack of prior focused surveys, only a portion of the overall project area received focused surveys: the Jurupa Avenue Trailhead parcel received protocol surveys for southwestern willow flycatcher; and the Tequesquite Extension South parcel received protocol surveys for least Bell’s vireo. ICF biologists performed these surveys between April and July 2022.

Project Description
The Project involves a multidisciplinary effort for the planning, design, engineering, and associated community outreach and environmental compliance for California Environmental Quality Act (CEQA) review for nine identified park sites in the City, in Riverside County, California. The Santa Ana River Trail, adjacent to the Santa Ana River, is completed throughout its length in the City. After completing the 2018 update to the Citywide Parks System Master Plan, the PRCSD proposes to complete planning and design for improvements and enhancement to existing and proposed park areas located along the Santa Ana River and the 4.7 miles of the Santa Ana River Parkway from Fairmount Park to Martha McLean Anza Narrows Park. These park sites were initially identified as part of the planning process in development of the Santa Ana River Parkway and Open Space Plan completed in 2018. Development of these park sites would comply with the City’s overarching goal to “put the river back into Riverside” by providing diverse recreational and educational opportunities, access to open space, and restoration of natural habitat for people and wildlife.

The entire 11-mile northern edge of the City fronts the Santa Ana River. In Riverside, the Santa Ana River is a juxtaposition of a natural and scenic riparian corridor running through an urban setting.

Protocol Southwestern Willow Flycatcher and Least Bell’s Vireo Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

The Santa Ana River is a vital resource in the City, and it supports several important functions for the City, including providing natural habitat that serves wildlife, recharging the groundwater basin that supplies water to residences and businesses, and providing recreational opportunities to connect people to natural resources. There is also a need to provide no-cost and low-cost parks and recreational resources, open space access, and active transportation resources to support the disadvantaged communities identified near the project area in the City.

Conceptual improvement and engagement opportunities have been identified for each of the nine individual park sites, including, but not limited to, habitat conservation areas, woodland restoration, parking lots, an amphitheater, restroom and drinking water facilities, nature trails, active recreation and exercise stations, passive park amenities, camping, picnic areas, community garden and incubator farm, vista points, public art, interpretive and wayfinding signage, landscaping, irrigation, lighting, shade enhancements, equestrian facilities, and bicycle repair station and bike racks, among others. The nine park sites in the City are (1) Camp Evans; (2) Loring Park; (3) Carlson Park; (4) St.

Francis Falls; (5) Santa Ana River Greenway; (6) Tequesquite Extension North; (7) Tequesquite Extension South; (8) Martha McLean Anza Narrows Park; and (9) Jurupa Avenue Trailhead, shown on Figure 2 (Appendix A).

The Project is a forward-looking proposal to recover, reconceive and re-engage with the Santa Ana River to deliver ecological, recreational, cultural, social, and economic value to the City’s inhabitants.

The Project is funded by a grant provided by the State Coastal Conservancy, a California state agency established in 1976 to protect and improve natural lands and waterways, help people get to and enjoy the outdoors, and sustain local economies along California’s coast. The State Coastal Conservancy acts with others to protect, restore, and increase public access to California’s coast, ocean, coastal watersheds, and the San Francisco Bay Area. Its vision is of a beautiful, restored, and accessible coast for current and future generations of Californians.

Location
The Project is along the southern side of the Santa Ana River floodplain in the City, in Riverside County, California, as shown on Figure 2 (Appendix A). The surveys were conducted where suitable riparian bird habitat was identified in the project area and where no recent riparian bird surveys had been performed. As a result, the Jurupa Avenue Trailhead parcel received protocol surveys for southwestern willow flycatcher. and the Tequesquite Extension South parcel received protocol surveys for least Bell’s vireo.

The Jurupa Avenue Trailhead southwestern willow flycatcher survey area is on the northwestern corner of Jurupa Avenue and Van Buren Boulevard, as depicted within Township 2 South, Range 5 West, Section 1 of the Riverside West, California, U.S. Geological Survey 7.5-minute quadrangle map (USGS 2022), shown on Figure 3a (Appendix A).

The Tequesquite Extension South least Bell’s vireo survey area is generally between Rubidoux Avenue and Tequesquite Avenue, west of Ryan Bonaminio Park, as depicted within Township 2 South, Range 5 West, Section 33 of the Riverside West, California, U.S. Geological Survey 7.5-minute quadrangle map (USGS 2022), shown on Figure 3b (Appendix A).

Protocol Southwestern Willow Flycatcher and Least Bell’s Vireo Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Survey Area
A significant area within and adjacent to the project limits is annually surveyed by the Santa Ana Watershed Association (SAWA 2021) for southwestern willow flycatcher and least Bell’s vireo1. As a result, most potentially suitable riparian habitat for these species has been adequately surveyed; however, based on a review of the SAWA data and existing conditions within the project limits, the riparian habitat within and adjacent to the Jurupa Avenue Trailhead parcel was determined to be adequately surveyed for least Bell’s vireo, but not for southwestern willow flycatcher. Similarly, a review of the SAWA data and existing conditions within the project limits, the riparian habitat within and adjacent to the Tequesquite Extension South parcel was determined not to have been adequately surveyed for least Bell’s vireo (and did not provide suitable southwestern willow flycatcher habitat).

The survey area for southwestern willow flycatcher includes all potentially suitable habitat within the Jurupa Avenue Trailhead parcel, plus any additional habitat within 500 feet, shown on Figure 3a (Appendix A). The riparian habitat within this survey area consists of mostly Southern Riparian Forest, but also included Mulefat Scrub, Disturbed Riparian (Arundo dominated) , and Tamarisk Scrub. The riparian communities within this survey area are highly disturbed and dominated by Goodding’s willow (Salix gooddingii), arroyo willow (Salix lasiolepis), and red willow (Salix laevigata). Co-dominant nonnative trees, such as Shamel ash (Fraxinus uhdai), mulberry (Morus alba), and Mexican fan palm (Washingtonia robusta), also were present. The shrub layer is intermittent to continuous and includes species such as mugwort (Artemisia douglasiana), mulefat (Baccharis salicifolia), sandbar willow (Salix exigua), and poison oak (Toxicodendron diversilobum), as well as nonnative species, such as edible fig (Ficus carica) and tobacco tree (Nicotiana glauca).

The herbaceous understory is composed primarily of ragweed (Ambrosia psilostachya), yerba mansa (Anemopsis californica), stinging nettle (Urtica dioica), and nonnative grasses and mustards.

The survey area for least Bell’s vireo includes all potentially suitable habitat within the Tequesquite Extension South parcel, plus any additional habitat within 500 feet, shown on Figure 3b (Appendix A). The riparian habitat within this survey area consists of a mosaic of vegetation communities, including Arrow Weed Scrub dominated by arrow weed (Pluchea sericea), Mulefat Scrub dominated by mulefat, Southern Arroyo Willow Riparian Forest dominated by arroyo willow with associated species, such as sandbar willow, mulefat, red willow, and elderberry (Sambucus nigra), Southern Coast Live Oak Riparian Forest dominated by coast live oak (Quercus agrifolia), Southern Cottonwood–Willow Riparian Forest dominated or co-dominated by Fremont cottonwood (Populus fremontii), Southern Riparian Woodland dominated by Goodding’s willow, Wild Grape Shrubland dominated by wild grape (Vitus girdiana), and Non-native Riparian dominated by Mexican fan palm and Tree-of-Heaven (Ailanthus altissima).

Representative photographs of the survey area are provided in Appendix B.

1 These annual reports are available on the SAWA website at Santa Ana Watershed Association Reports and Studies (sawatershed.org).

Protocol Southwestern Willow Flycatcher and Least Bell’s Vireo Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Survey Methods
Southwestern Willow Flycatcher
Surveys for the southwestern willow flycatcher followed the protocol outlined by Sogge et al. (2010). The 2010 protocol recommends five surveys during three survey periods, with two surveys occurring within each of the last two survey periods. These three survey periods are Period 1: May 15–31, Period 2: June 1–24, and Period 3: June 25–July 17.

Surveys were conducted within all areas of suitable habitat using a single transect along the easterly side of the survey area. Southwestern willow flycatcher vocalizations were played at approximately 100-foot intervals along each transect using an MP3 player and portable speaker system. The vocalization was played following an initial approximate 1-minute period of listening. The period of listening, followed by audio playback, was repeated with another period of listening at the end, before moving to the next 100-foot interval. The locations of willow flycatchers and any other sensitive species detections were recorded using a handheld GPS unit capable of 3- to 10-foot accuracy. Survey data were recorded in the field and copied onto Willow Flycatcher Survey and Detection Forms (Appendix C).

Least Bell’s Vireo
Surveys for least Bell’s vireo followed the protocol outlined in USFWS 2001. USFWS protocol for least Bell’s vireo surveys specifies eight surveys spaced at least 10 days apart between April 10 and July 31 (USFWS 2001). All areas of suitable least Bell’s vireo habitat within the survey area were traversed on foot, with frequent stops to look and listen for least Bell’s vireos.

Results
Surveys were performed by ICF biologist Ben Smith, who is authorized to conduct protocol surveys for southwestern willow flycatcher under Federal Recovery Permit TE-67390A-2 and California Department of Fish and Wildlife (CDFW) Memorandum of Understanding. Southwestern willow flycatchers were not detected during any of the surveys. Figure 4a (Appendix A) depicts survey boundaries and locations where least Bell’s vireo were incidentally detected during the southwestern willow flycatcher surveys at the Jurupa Avenue Trailhead parcel. Table 1 summarizes the dates, times, personnel, and weather conditions for each survey. Completed survey forms are included in Appendix C. Southwestern willow flycatcher surveys one through five were each conducted in one day.

Protocol Southwestern Willow Flycatcher and Least Bell’s Vireo Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Table 1. Southwestern Willow Flycatcher Survey Dates, Personnel, and Weather Conditions Visit # Date Time Personnel Conditions
1 05/23/22 0630–0740 Ben Smith
Cole Sutter
54–57°F, winds 1–3 mph, overcast, good
visibility
2 06/06/22 0650–0900 Ben Smith 60–68°F, winds 1–3 mph, clear, good visibility
3 06/20/22 0620–0745 Ben Smith
Cole Sutter
61–69°F, winds 1–3 mph, clear, good
visibility
4 07/01/22 0620–0745 Ben Smith
Cole Sutter
66–70°F, winds 1–3 mph, clear, good
visibility
5 07/12/22 0620–0730 Ben Smith
Cole Sutter
61–63°F, winds 1–3 mph, clear/hazy, good
visibility
°F = degrees Fahrenheit; mph = miles per hour.

Within the Tequesquite Extension South parcel, two least Bell’s vireo territories were confirmed and located along the southeastern and northwestern corners of the survey area (Figure 4b, Appendix A). Table 2 summarizes the dates, times, personnel, and weather conditions for each survey.

Table 2. Least Bell’s Vireo Survey Dates, Personnel, and Weather Conditions Visit # Date Time Personnel Conditions
1 04/18/22 0715–1030 Phil Richard
Cole Sutter
54–67°F, winds 1–5 mph, clear, good
visibility
2 05/02/22 0700–1050 Phil Richards
Cole Sutter
59–66°F, winds 2–6 mph, partly cloudy,
good visibility
3 05/12/22 0700–1015 Phil Richards
Cole Sutter
50–73°F, winds 1–5 mph, clear, good
visibility
4 05/23/22 0755–1010 Ben Smith
Cole Sutter
59–62°F, winds 1–3 mph, overcast–clear,
good visibility
5 06/16/22 0700–1025 Phil Richards
Cole Sutter
62–78°F, winds 1–4 mph, clear, good
visibility
6 06/27/22 0700–1040 Phil Richards 72–93°F, winds 1–3 mph, clear, good visibility
7 07/12/22 0755–1050 Ben Smith
Cole Sutter
65–77°F, winds 1–5 mph, clear, good
visibility
8 07/22/22 0705–1035 Phil Richards
Cole Sutter
67–80°F, winds 1–5 mph, clear, good
visibility
°F = degrees Fahrenheit; mph = miles per hour.

The southeastern territory was located between the skateboard park and Ryan Bonaminio Park. A nest associated with this pair was discovered in wild grape growing over a chain-link fence on the southern end of a stand of willows. Two least Bell’s vireo fledglings were observed being fed by both adults on several occasions.

Protocol Southwestern Willow Flycatcher and Least Bell’s Vireo Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

The northwestern territory was located on both sides of the existing Santa Ana River Trail, just east of Rubidoux Avenue. A pair of least Bell’s vireos was confirmed at this territory, but successful nesting was not confirmed.

In addition, toward the later dates of the survey effort, several dispersing juvenile least Bell’s vireos were detected within the survey area. The location of detected dispersing juveniles is shown on Figure 4b (Appendix A).

Wildlife species included on the CDFW special animals list (CDFW 2022) were incidentally observed within the survey areas. Adult and juvenile yellow warblers (Setophaga petechia), a CDFW Species of Special Concern (SSC), were observed throughout both survey areas. White-faced ibises (Plegadis chihi), an SSC, were seen flying over the Tequesquite Extension South parcel survey area. Yellow- breasted chats (Icteria virens), an SSC, were observed along the western end of the Tequesquite Extension South parcel survey area. A separate list of wildlife species observed during visits to the Jurupa Avenue Trailhead parcel and Tequesquite Extension South parcel is included as Appendix D.

If you have questions or need clarifications regarding this report, please contact us at [email protected] or [email protected].

Sincerely,

Ben Smith Phil Richards
ICF Biologist ICF Biologist

Enclosed:

Appendix A: Figures
Appendix B: Site Photographs
Appendix C: Completed Willow Flycatcher Survey and Detection Forms Appendix D: Wildlife Species Detected
Appendix E: Certification Statements

Protocol Southwestern Willow Flycatcher and Least Bell’s Vireo Survey Results in Support of the City of Riverside Gateway Project, in Riverside County, California
December 2, 2022

Literature Cited
California Department of Fish and Wildlife (CDFW). 2022. Special Animals List. Available:
https://www.wildlife.ca.gov/Conservation/SSC. Accessed: November 9, 2022.

Santa Ana Watershed Association (SAWA). 2021. Status and Management of the Least Bell’s Vireo and Southwestern Willow Flycatcher in the Santa Ana River Watershed, 2021 and Summary Data by Site and Watershed-wide, 2000–2021.

Sogge, M. K., D. Ahlers, and S. J. Sferra. 2010. A Natural History Summary and Survey Protocol for the Southwestern Willow Flycatcher: U.S. Geological Survey Techniques and Methods 2A-10, 38 pp.

U.S. Fish and Wildlife Service (USFWS). 2001. Least Bell's Vireo Survey Guidelines. Carlsbad, CA: U.S.

Department of the Interior, 3 pp.

U.S. Geological Survey (USGS). 2022. Geographic Names Information System. Available:
https://www.usgs.gov/the-national-map-data-delivery. Accessed: November 9, 2022.

Appendix A
Figures
Martha McLean
5200
Tequesquite
St. Francis
Falls
Jurupa Ave.

Trailhead
Loring Park
Tequesquite
North
Extension
Tequesquite
South
ExtensionSanta Ana
River
Greenway
Santa Ana
River
Greenway
Camp Evans
187
443
534
617
621
Figure 1
Project Overview
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RiparianBirds\1_ProjectOverview.mxd; User: 37937; Date: 11/18/2022 0 2,1001,050
Feet
Legend
Riverside Gateway Project Limits
WRMSHCP Units
Criteria Area Cells
Riverside County Core Linkage
Public/Quasi-public
Conserved Lands
Source: ICF, USFWS, USGS; CNDDB 2019
1:26,000
[
N

Jurupa Ave.

Trailhead
Figure 2a
SWFL 2022 Survey Area
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RiparianBirds\2a_SWFLSurveyArea.mxd; User: 37937; Date: 11/18/2022 0 300150
Feet
Legend
Riverside Gateway Project Limits
SWFL Survey Area (500-ft buffer)
Potentially Suitable SWFL Habitat
Source: ICF, USFWS, USGS; CNDDB 2019
1:3,600
[
N

Figure 2b
LBV 2022 Survey Area
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RiparianBirds\2b_LBVSurveyArea.mxd; User: 37937; Date: 11/18/2022 0 600300
Feet
Legend
Riverside Gateway Project Limits
LBV Survey Area (500-ft Buffer)
Potentially Suitable LBV Habitat
Source: ICF, USFWS, USGS; CNDDB 2019
1:7,200
[
N

Figure 3a
SWFL 2022 Survey Results
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RiparianBirds\3a_SWFL_Results.mxd; User: 37937; Date: 11/18/2022 0 200100
Feet
Legend
Incidental Observations (2022)
Confirmed Adult
Confirmed LBV Nest
Dispersing LBV Juvenile(s)
Riverside Gateway Project Limits
SWFL Survey Area
(500-ft Buffer)
Riparian
Black Willow Riparian Woodland
Giant Reed
Mulefat Thicket (Disturbed)
Open Water
Tamarisk Thicket
Uplands
Riversidian Coastal Sage Scrub
(Distubed)
Nonnative Grassland
Ruderal Upland Mustard and
Forbs (nonnative)
Other Cover Types
Developed
Disturbed
Source: ICF, USFWS, USGS; CNDDB 2019
1:2,400
[
N

!(
!(
!(
!(
!(
!(
!(
!(
!(!(
!(
!(
!(
!(
!(
!(
!(
!(
!(
#*
#*
#*
#*
#*
#* #*
#*
#*#*
#*#*
#*
#*
#*
Figure 3b
LBV 2022 Survey Results
Riverside Gateway
\\PDCCITRDSGIS01\Projects_1\City_of_Riverside\P0766_20_Riverside_Gateway\Figures\Doc\RiparianBirds\3b_LBV_Results.mxd; User: 37937; Date: 11/18/2022 0 500250
Feet
Legend
LBV 2022 Survey Results
!( Confirmed Adult LBV
!( Confirmed LBV Nest
!( Dispersing LBV Juvenile(s)
#* SAWA Results (2021)
Riverside Gateway Project Sites
LBV Survey Area
(500-ft Buffer)
Potentially Suitable LBV Habitat
Riparian
Arrowweed Thicket
Arroyo Willow Scrub
Black Willow Riparian Woodland
Fremont Cottonwood Forest and
Woodland
Mulefat Thicket
Open Water
Salt Grass Flats
Uplands
Calfornia Croton Scrub
Elderberry Woodland
Eucalyptus Woodland (nonnative)
Fourwing Saltbush Scrub
Mexican Fan Palm Grove (nonnative)
Nonnative Grassland
Oak Woodland
Pepper Tree Grove (nonnative)
Ruderal Upland Mustard and Forbs
(nonnative)
Russia Thistle - Five Hook Bassisa
Fields (nonnative)
Tree of Heaven Grove (nonnative)
Wild Grape Shrubland
Other Cover Types
Developed
Disturbed
Source: ICF, USFWS, USGS; CNDDB 2019
1:6,000
[
N

Appendix B
Site Photographs
Riverside Gateway Project 2022 SWFL & LBV Surveys
1 Photograph: 1
Phot
o Date: March 15, 2022
Locat
ion: East side of the Jurupa Ave.

Trailhead Parcel.

Direct
ion: View facing northwest.

Comme
nt: Photo depicts an overview of
the habitat within survey area.

Photograph: 2
Phot
o Date: March 15, 2022
Locat
ion: Upstream end of Jurupa Ave.

Trailhead Parcel.

Direct
ion: View facing northwest.

Comme
nt: Photo provides a
representative example of
habitat exterior.

Photograph: 3
Phot
o Date: March 15, 2022
Locati
on: N ortheast corner of Jurupa
Ave. Trailhead Parcel
Direct
ion: View facing northwest.

Comme
nt: Photo provi des a
representative example of
habitat exterior.

Riverside Gateway Project 2022 SWFL & LBV Surveys
2 Photograph: 4

Photo Date: March 15, 2022

Location: Northeast corner of Jurupa
Ave. Trailhead Parcel.

Direction: View facing southwest.

Comment: Photo provides a
representative example of
habitat interior.

Photograph: 5

Photo Date: March 15, 2022

Location: North side of Jurupa Ave.

Trailhead Parcel.

Direction: V iew facing northwest.

Comment: Photo depicts provides a
representative example of
habitat interior.

Photograph: 6

Photo Date: May 2, 2022

Location: Southwest corner of
Tequesquite South Extension
LBV survey area.

Direction: View facing north.

Comment: Photo potentially suitable
LBV habitat along western
boundary of the survey area.

Riverside Gateway Project 2022 SWFL & LBV Surveys
3 Photograph: 7

Photo Date: May 2, 2022

Location: West end of Tequesquite
South Extension LBV survey
area.

Direction: View facing southeast.

Comment: Photo pot entially suitable
LBV habitat along western
boundary of the survey area.

Photograph: 8

Photo Date: May 2, 2022

Location: Northwest corner of
Tequesquite South Extension
LBV survey area.

Direction: View facing west.

Comment: Photo depicts potentia lly
suitable LBV habitat along
western boundary of the
survey area.

Photograph: 9

Photo Date: May 2, 2022

Location: Near center of Tequesquite
South Extension LBV survey
area.

Direction: View facing northwest.

Comment: Photo depicts fragmented
clusters of mixed
riparian/non-native woodlands
within interior of this survey
area.

Riverside Gateway Project 2022 SWFL & LBV Surveys
4 Photograph: 10

Photo Date: May 2, 2022

Location: South side of Tequesquite
South Extension LBV survey
area.

Direction: View facing southwest.

Comment: Photo depict s isolated willow
stand along the south side of
this survey area.

Photograph: 11

Photo Date: May 2, 2022

Location: Southeast corner of the
Tequesquite South Extension
LBV survey area, between
skate park and Ryan
Bonaminio Park.

Direction: View facing south.

Comment: Photo depicts conditions in
area where LBV nesting was
confirmed.

Photograph: 12

Photo Date: July 1, 2022

Location: North end of the survey area
at Jurupa Ave. Trailhead
parcel.

Direction: View facing north.

Comment: Photo depict s juvenile least
Bell’s vireo playing with a
leaf.

Appendix C
Completed Willow Flycatcher Survey and Detection Forms
Appendix 1 31
Willow Flycatcher (WIFL) Survey and Detection Form (revised April 2010) Is
copy of USGS map marked with survey area and WIFL sightings attached (as required)? Yes___ No____ _______
Stop: E___________________ N__ ______________ UTM Zone ________ If survey coordinates changed between visits, enter coordinates for each survey in comments section on back of this page. ** Fill in additional site information on back of this page ** Survey #
Observer(s)
(Full Name)
Date (m/d/y)
Survey time
Number
of Adult
WIFLs
Estimate
d
Number
of Pairs
Estimated
Number of
Territories
Nest(s) Found?
Y or N
If Yes, number
of nests
Comments (e.g., bird behavior;
evidence of pairs or breeding;
potential threats [livestock,
cowbirds, Diorhabda spp.]). If
Diorhabda found, contact
USFWS and State WIFL
coordinator
GPS Coordinates for WIFL Detections
(this is an optional column for documenting
individuals, pairs, or groups of birds found on
each survey). Include additional sheets if
necessary.

# Birds Sex UTM E UTM N Survey # 1
Observer(s) Date
Start
Sto
p
# Birds Sex UTM E UTM N Survey # 2
Observer(s)
Date
Start
Stop
Tota
l hrs ___
# Birds Sex UTM E UTM N Survey # 3
Observer(s) Date
Start
Stop
Tota
l hrs ___
# Birds Sex UTM E UTM NSurvey # 4
Observer(s) Date
Start
Stop
Tot
al hrs ___
# Birds Sex UTM E UTM N Survey # 5
Observer(s) Date
Start
Stop
Tot
al hrs ___
Total
Adult
Res
idents
Total
Pairs
Total
Territories
Total
Nests
Were
any Willow Flycatchers color-banded? Yes___ No ___
If yes, report color combination(s) in the
comments
section on back of form and report to USFWS.

Reporting Individual _____________________________________ Date Report Completed________ ____________________ US Fish and Wildlife Service Permit #________________________State Wildlife Agency Permit #________________________ Submit form to USFWS and State Wildlife Agency by September 1st. Retain a copy for your records.

Appendix 1. Willow Flycatcher Survey and Detection Form Always check the U.S. Fish and Wildlife Service Arizona Ecological Services Field Office web site (http://www.fws.gov/ southwest/es/arizona/) for the most up-to-date version.

Site Name Riverside Gateway Project_________________________________ State______ CA County Riverside_____________ USGS Quad Name _ _______________________________ Elevation 210_________________ (meters) Creek, River, Wetland, or Lake Name Tributary to Santa Ana River____________________________________________________ X
11S
WGS84Survey Coordinates: Start: 501288E___________________ 3757688 ______________ UTM Datum (See instructions) 501180 3757990
5/23/22
0630
0740
Total hrs 1.25
0 00 N
Ben Smith
Cole Sutter
0 0 0 0
Benjamin Smith
67390A-3
Overall Site Summary
Totals do not equal the sum of
each column. Include only
resident adults. Do not include
migrants, nestlings, and
fledglings.

Be careful not to double count
individuals.

Total Survey Hrs____7.75___
Riverside West
6/6/22
0650
0900

2.25 0 0 0 N
6/20/22
0620
0745

1.5 0 0 0 N
7/1/22
0620
0745

1.5 N000
7/12/22
0620
0730

1.25 N000
Ben Smith
Ben Smith
Cole Sutter
Ben Smith
Cole Sutter
Ben Smith
Cole Sutter
32 A Natural History Summary and Survey Protocol for the Southwestern Willow Flycatcher Attach additional sheets if necessary
Territory
Number
All Dates
Detected
UTM E UTM N Pair
Confirmed?
Y or N
Nest
Found?
Y or N
Description of How You Confirmed
Territory and Breeding Status
(e.g., vocalization type, pair interactions,
nesting attempts, behavior)
Fill in the following information completely. Submit form by September 1st. Retain a copy for your records.

Reporting Individual Benjamin Smith__________________________________________________Phone # 949-922-5992__________________________ Affiliation ICF_________________________________________ E-mail ___________ [email protected] Site Name Santa Ana River tributary_________________________Date Report Completed ______________ Was this site surveyed in a previous year? Yes___ No _X__ Unknown ____ Did you verify that this site name is consistent with that used in previous years? Yes ____ No _____ Not Applicable _X__ If site name is different, what name(s) was used in the past?________________________________________________________ If site was surveyed last year, did you survey the same general area this year? Yes ____ No ____ If no, summarize below.

Did you survey the same general area during each visit to this site this year? Yes ____ No ____ If no, summarize below.

Management Authority for Survey Area: Federal____ Municipal/County __X__ State ____ Tribal ____ Private ____ Name of Management Entity or Owner (e.g., Tonto National Forest) _County_of_Riverside Length of area surveyed: 0.65_ (km)
Vegetation Characteristics: Check (only one) category that best describes the predominant tree/shrub foliar layer at this site:
__ __ Native broadleaf plants (entirely or almost entirely, > 90% native) __X___ Mixed n ative and exotic plants (mostly native, 50 - 90% native) _____ Mixed native and exotic plants (mostly exotic, 50 - 90% exotic) _____ Exotic/introduced plants (entirely or almost entirely, > 90% exotic) Identify the 2-3 predominant tree/shrub species in order of dominance. Use scientific names.

Salix gooddingii and Fraxinus velutina_________________________________________________________________ Average height of canopy (Do not include a range): _______________________________ 7 (meters) Attach the following: 1) copy of USGS quad/topographical map (REQUIRED) of survey area, outlining survey site and location of WIFL detections; 2) sketch or aerial photo showing site location, patch shape, survey route, location of any detected WIFLs or their nests; 3) photos of the interior of the patch, exterior of the patch, and overall site. Describe any unique habitat features in Comments.

Comments (such as start and end coordinates of survey area if changed among surveys, supplemental visits to sites, unique habitat features. Attach additional sheets if necessary.
_____________________________________________
________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ ________________________________________________________________________________________________________ __________________________________________________________________________________________________ Territory Summary Table. Provide the following information for each verified territory at your site.

Appendix D
Wildlife Species Detected
Appendix C:    Wildlife Species Detected   ‐   Jurupa Avenue Trailhead Parcel Scientific Name Common Name Special Status

VERTEBRATES
Birds
Columbidae ‐ Pigeon and Dove Family
Zenaida macroura Mourning Dove
Apodidae ‐ Swift Family
Aeronautes saxatalis White‐throated Swift
Trochilidae ‐ Hummingbird Family
Archilochus alexandri Black‐chinned Hummingbird
Calypte anna Anna's Hummingbird
Picidae ‐ Woodpecker Family
Picoides nuttallii Nuttall's Woodpecker
Picoides pubescens Downy Woodpecker
Tyrannidae ‐ Tyrant Flycatcher Family
Sayornis nigricans Black Phoebe
Sayornis saya Say's Phoebe
Vireonidae ‐ Vireo Family
Vireo bellii pusillus Least Bell's Vireo FE,  SE
Vireo huttoni Hutton's Vireo
Hirundinidae ‐ Swallow Family
Stelgidopteryx serripennis Northern Rough‐winged Swallow Petrochelidon pyrrhonota Cliff Swallow
Troglodytidae ‐ Wren Family
Thryomanes bewickii Bewick's Wren
Mimidae ‐ Thrasher Family
Mimus polyglottos Northern Mockingbird
Parulidae ‐ Wood‐Warbler Family
Setophaga petechia Yellow Warbler CSC
Emberizidae ‐ Sparrow Family
Pipilo maculatus Spotted Towhee
Melozone crissalis California Towhee
Melospiza melodia Song Sparrow
Cardinalidae ‐ Cardinals, Grosbeaks and Allies Family
Passerina caerulea Blue Grosbeak
Icteridae ‐ Blackbird, Cowbird and Oriole Family
Icterus cucullatus Hooded Oriole
Scientific Name Common Name Special Status
Fringillidae ‐ Finch Family
Haemorhous mexicanus House Finch
Carduelis psaltria Lesser Goldfinch
Carduelis lawrencei Lawrence's Goldfinch
Carduelis tristis American Goldfinch
Legend
Special Status:

Federal:

FE = Endangered
FT = Threatened
State:

SE = Endangered
ST =Threatened
CSC = California Species of Special Concern
CFP = California Fully Protected Species
*= Non‐native or invasive species
Appendix C:  Wildlife Species Detected  ‐  Tequesquite Extension South Scientific Name Common Name Special Status

VERTEBRATES
Reptiles
Colubridae ‐ Colubrid Snake Family
Coluber flagellum piceus Red Racer
Birds
Anatidae ‐ Swan, Goose, and Duck Family
Anas platyrhynchos Mallard
Ardeidae ‐ Heron Family
Ardea herodias Great Blue Heron
Ardea alba Great Egret
Threskiornithidae ‐ Ibis Family
Plegadis chihi White‐faced Ibis
Accipitridae ‐ Hawk Family
Accipiter cooperii Cooper's Hawk
Buteo lineatus Red‐shouldered Hawk
Buteo jamaicensis Red‐tailed Hawk
Columbidae ‐ Pigeon and Dove Family
*Columba livia Rock Pigeon
Patagioenas fasciata Band‐tailed Pigeon
*Streptopelia decaocto Eurasian Collared‐Dove
Zenaida macroura Mourning Dove
Columbina passerina Common Ground‐Dove
Cuculidae ‐ Cuckoo and Roadrunner Family
Geococcyx californianus Greater Roadrunner
Strigidae ‐ Typical Owl Family
Bubo virginianus Great Horned Owl
Apodidae ‐ Swift Family
Aeronautes saxatalis White‐throated Swift
Trochilidae ‐ Hummingbird Family
Archilochus alexandri Black‐chinned Hummingbird
Calypte costae Costa's Hummingbird
Selasphorus sasin Allen's Hummingbird
Picidae ‐ Woodpecker Family
Melanerpes formicivorus Acorn Woodpecker
Scientific Name Common Name Special Status
Picoides nuttallii Nuttall's Woodpecker
Picoides pubescens Downy Woodpecker
Colaptes auratus Northern Flicker
Falconidae ‐ Falcon Family
Falco sparverius American Kestrel
Tyrannidae ‐ Tyrant Flycatcher Family
Empidonax difficilis Pacific‐slope Flycatcher
Sayornis saya Say's Phoebe
Myiarchus cinerascens Ash‐throated Flycatcher
Tyrannus vociferans Cassin's Kingbird
Tyrannus verticalis Western Kingbird
Vireonidae ‐ Vireo Family
Vireo bellii pusillus Least Bell's Vireo FE,  SE
Corvidae ‐ Jay and Crow Family
Aphelocoma californica California Scrub‐Jay
Corvus brachyrhynchos American Crow
Corvus corax Common Raven
Hirundinidae ‐ Swallow Family
Stelgidopteryx serripennis Northern Rough‐winged Swallow Petrochelidon pyrrhonota Cliff Swallow
Hirundo rustica Barn Swallow
Aegithalidae ‐ Bushtit Family
Psaltriparus minimus Bushtit
Troglodytidae ‐ Wren Family
Troglodytes aedon House Wren
Thryomanes bewickii Bewick's Wren
Turdidae ‐ Thrush Family
Sialia mexicana Western Bluebird
Mimidae ‐ Thrasher Family
Toxostoma redivivum California Thrasher
Mimus polyglottos Northern Mockingbird
Sturnidae ‐ Starling Family
*Sturnus vulgaris European Starling
Ptilogonatidae ‐ Silky‐flycatcher Family
Phainopepla nitens Phainopepla
Scientific Name Common Name Special Status
Parulidae ‐ Wood‐Warbler Family
Geothlypis tolmiei MacGillivray's Warbler
Setophaga petechia Yellow Warbler CSC
Cardellina pusilla Wilson's Warbler
Icteria virens Yellow‐breasted Chat CSC
Emberizidae ‐ Sparrow Family
Pipilo maculatus Spotted Towhee
Melozone crissalis California Towhee
Melospiza melodia Song Sparrow
Cardinalidae ‐ Cardinals, Grosbeaks and Allies Family
Piranga ludoviciana Western Tanager
Passerina caerulea Blue Grosbeak
Passerina amoena Lazuli Bunting
Icteridae ‐ Blackbird, Cowbird and Oriole Family
Icterus cucullatus Hooded Oriole
Icterus bullockii Bullock’s Oriole
Fringillidae ‐ Finch Family
Haemorhous mexicanus House Finch
Carduelis psaltria Lesser Goldfinch
Carduelis tristis American Goldfinch
Mammals
Leporidae ‐ Hare and Rabbit Family
Sylvilagus audubonii Desert Cottontail
Sciuridae ‐ Squirrel Family
Otospermophilus beecheyi California Ground Squrrel
Canidae ‐ Canid Family
Canis latrans Coyote
Felidae ‐ Cat Family
Lynx rufus Bobcat
Scientific Name Common Name Special Status
Legend
Special Status:

Federal:

FE = Endangered
FT = Threatened
State:

SE = Endangered
ST =Threatened
CSC = California Species of Special Concern
CFP = California Fully Protected Species
*= Non‐native or invasive species
Appendix E
Certification Statement
I hereby certify that the statements furnished above and in the attached exhibits present the data and information required for this biological evaluation, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief. Part of the field work conducted for this survey effort was performed by me or under my direct supervision. I certify that I have not signed a non- disclosure or consultant confidentiality agreement with the project applicant or the applicant’s representative and that I have no financial interest in the project.

DATE: 11/10/2022 SIGNED: _________________________

Benjamin Smith
I hereby certify that the statements furnished above and in the attached exhibits present the data
and information required for this biological evaluation, and that the facts, statements, and information presented are true and correct to the best of my knowledge and belief. Part of the field work conducted
for this survey effort was performed by me or under my
direct supervision. I certify that I have not signed a non-disclosure or consultant confidentiality agreement with the project applicant or the applica nt’s representative and that I have no financial intere st in the project.

Sincerely,
Phillip C. Richards
Biologist
ICF International
Date: 11/10/2022

Appendix H
Cultural Resources Technical Report

Confidential

Appendix I
Noise and Vibration Analysis

Riverside Gateway Parks Program
Martha McLean Anza Narrows Park
Modeling Appendices
Construction Noise Analysis Table 2. Phase 1, Demolition Item No. Description
48 Saw, Concrete 89.6 0.2 1 82.6
18 Excavator 80.7 0.4 3 81.5
13 Dozer 81.7 0.4 2 80.7
Combined Equipment 86.5
Construction Noise Analysis Table 3. Phase 2, Site Preparation Item No. Description
13 Dozer 81.7 0.4 3 82.5
29 Loader (Front End Loader) 79.1 0.4 4 81.1
Combined Equipment 84.9
Construction Noise Analysis Table 4. Phase 3, Grading
Item No. Description
18 Excavator 80.7 0.4 1 76.7
23 Grader 85 0.4 1 81.0
13 Dozer 81.7 0.4 1 77.7
29 Loader (Front End Loader) 79.1 0.4 3 79.9
Combined Equipment 85.2
Leq(h),
dBA
Usage
Factor1,2
Leq(h),
dBA
Number
of Units
Leq(h),
dBA
Equipment Typical
Level @
50', dBA1
Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Riverside Gateway Parks Program Martha McLean Anza Narrows Park Construction Noise Analysis Table 5. Phase 4, Building Construction Item No. Description
12 Crane 80.6 0.16 1 72.1
72 Forklift (based on front loader) 79.1 0.4 3 79.9
20 Generator 80.6 0.5 1 77.6
29 Loader (Front End Loader) 79.1 0.4 3 79.3
69 Welder/Torch 74.0 0.4 1 70.0
Combined Equipment 84.3
Construction Noise Analysis Table 6. Phase 5, Paving
Item No. Description
34 Paver 77.2 0.5 2 77.2
75 Paving Equipment (based on p 77.2 0.5 2 77.2
44 Roller 80.0 0.2 2 76.0
Combined Equipment 81.6
Construction Noise Analysis Table 7. Phase 6, Architectural Coating Item No. Description
10 Compressor, Air 77.7 0.4 2 76.7
Combined Equipment 76.7
FHWA Roadway Construction Noise Model (RCNM), Version 1.1, December 8, 2008; and/or

1. Obtained or estimated from:

September 2018; and/or "Noise from Construction Equipment and Operations, Building

2. Usage Factor = percentage of time equipment is operating in noisiest mode while in use Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Leq(h),
dBA
Leq(h),
dBA
Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Leq(h),
dBA
Riverside Gateway Parks Program Martha McLean Anza Narrows Park Construction Noise Analysis Table 8. Noise Levels at Closest Receivers City Receiver
Acoustical
Average
Phase 1
Demolition
Phase 2 Site
Preparation
Phase 3
Grading
Phase 4
Building
Construction
Phase 5
Paving
Phase 6
Architectural
Coating
Reference distance, 50 feet 50 86.5 84.9 85.2 84.3 81.6 76.7 5681 Tucson Ct 236 70 68 68 67 65 60
5965 Tucson Ct 234 70 68 68 68 65 60
6027 Sheppard St 699 58 56 57 56 53 48
6019 William St 906 55 53 54 53 50 45
Jurupa
Valley 5760 Riverview Dr 2158 46 44 44 43 41 36
Construction Noise Level, Leq(h), dBA
Riverside
Riverside Gateway Parks Program Martha McLean Anza Narrows Park Receiver/Noise Source
Reference
Noise Level
@ 50 feet,
L50 dBA1
Reference
Number of
Children
Playing1
Assumed
Number of
Children
Playing
Noise
Adjustment for
Number of
Children, dBA2
Reference
Distance, feet
Distance,
feet
Hard
or Soft
Site?
Noise
Adjustment
for Distance3
Play Noise
Levels,
dBA L50 Combined
5681 Tucson Ct
Water Play Arroyo 66.4 58 100 2.4 50.0 2020 Soft -40.2 28.6 Nature Play 66.4 58 100 2.4 50.0 1950 Soft -39.8 29.0
5965 Tucson Ct
Water Play Arroyo 66.4 58 100 2.4 50.0 1940 Soft -39.7 29.0 Nature Play 66.4 58 100 2.4 50.0 1880 Soft -39.4 29.4
6027 Sheppard St
Water Play Arroyo 66.4 58 100 2.4 50.0 1800 Soft -38.9 29.9 Nature Play 66.4 58 100 2.4 50.0 1700 Soft -38.3 30.5
6019 William St
Water Play Arroyo 66.4 58 100 2.4 50.0 1010 Soft -32.6 36.1 Nature Play 66.4 58 100 2.4 50.0 980 Soft -32.3 36.5

1. Source data from Linda Vista Elementary School in San Diego during morning and lunchtime recess.

2. Adjustment = 10 × log (assumed # children / reference # children); i.e., 10 × log (100 / 58)

3. Assumes acoustically soft site/ground conditions with an attenuation rate of 7.5 dB per doubling of distance.

Receiver/Noise Source
Reference
Noise Level
@ 60 feet,
L
max dBA1
Reference
Number of
Children
Playing1
Assumed
Number of
Children
Playing
Noise
Adjustment for
Number of
Children, dBA2
Reference
Distance, feet
Distance,
feet
Hard
or Soft
Site?
Noise
Adjustment
for Distance3
Play Noise
Levels,
dBA Lmax Combined
5760 Riverview Dr
Water Play Arroyo 82.0 58 100 0.0 60.0 1610 Soft -35.7 46.3 Nature Play 82.0 58 100 0.0 60.0 1670 Soft -36.1 45.9

1. Source data from Linda Vista Elementary School in San Diego during morning and lunchtime recess.

2. Max level assumed to correlate to a single noise event, such as a child screaming.

3. Assumes acoustically soft site/ground conditions with an attenuation rate of 7.5 dB per doubling of distance.

49.1 Operational Noise Analysis Table 1. Noise Levels Due to Martha McLean Park Play Areas at the Nearest Sensitive Receptors in the City of Riverside
Operational Noise Analysis Table 2. Noise Levels Due to Martha McLean Park Play Areas at the Nearest Sensitive Receptors in the City of Jurupa Valley

39.3 32.2

31.8 33.2
Riverside Gateway Parks Program Martha McLean Anza Narrows Park Receiver/Noise Source
Reference
Noise Level,
Leq dBA1
Reference
Noise
Distance,
feet
Distance,
feet
Hard or Soft
Site?
Noise
Adjustment
for
Distance2
Band Shell
Noise
Levels, dBA
L50
5681 Tucson Ct 73.3 100.0 1160 Soft -26.6 46.7
5965 Tucson Ct 73.3 100.0 1080 Soft -25.8 47.5
6027 Sheppard St 79.1 200.0 1050 Soft -18.0 61.1
6019 William St 79.1 200.0 1000 Soft -17.5 61.6
Receiver/Noise Source
Reference
Noise Level,
LmaxdBA1
Reference
Noise
Distance,
feet
Distance,
feet
Hard or Soft
Site?
Noise
Adjustment
for
Distance2
Band Shell
Noise
Levels, dBA
Lmax
5760 Riverview Dr 90.4 100.0 2400 Soft -34.5 55.9
Operational Noise Analysis Table 3. Noise Levels Due to Marth McLean Park Band Shell Muscial Performances at the Nearest Sensitive Recceptors in the City of Riverside Operational Noise Analysis Table 4. Noise Levels Due to Marth McLean Park Band Shell Muscial Performances at the Nearest Sensitive Receptors in the City of Jurupa Valley

1. Source data obtained at the Irvine Regional Park Amphitheater. This venue has a permanent band shell with a solid back, roof, and sides.

2. Assumes acoustically soft site/ground conditions with an attenuation rate of 7.5 dB per doubling of distance.

1. Source data obtained at the Irvine Regional Park Amphitheater. This venue has a permanent band shell with a solid back, roof, and sides.

2. Assumes acoustically soft site/ground conditions with an attenuation rate of 7.5 dB per doubling of distance.

Riverside Gateway Parks Program Martha McLean Anza Narrows Park Receiver
Sound Power
Level, dBA1 Q2
Reference Noise
Level @ 50 feet, L50
dBA3
Acoustical
Average
Distance, feet
Hard or
Soft Site?
Noise
Reduction Due
to Distance4
Parking Lot
Noise Levels,
dBA L50
5681 Tucson Ct 91.0 2 59.3 287 hard -15.2 44.2
5965 Tucson Ct 91.0 2 59.3 504 hard -20.1 39.3
6027 Sheppard St 91.0 2 59.3 1044 soft -33.0 26.4
6019 William St 91.0 2 59.3 1114 Soft -33.7 25.6

1. Sound power level estimated using SoundPLAN software based on 71 trips per hour.

2. Q = directivity factor. A value of 2 corresponds to hemispherical spreading over solid ground.

3. Lp = Lw + 10 × log ( Q / 4 π r2); Lp = sound pressure (noise) level, Lw = sound power level, r = distance in meters (50' = 15.24 m) Receiver
Sound Power
Level, dBA1 Q2
Reference Noise
Level @ 50 feet, Lmax
dBA3
Acoustical
Average
Distance, feet4
Hard or
Soft Site?
Noise
Reduction Due
to Distance5
Parking Lot
Noise Levels,
dBA Lmax
5760 Riverview Dr 98.1 2 66.5 1610 Soft -37.7 28.8

1. Sound power level estimated using SoundPLAN software based on car door slamming.

2. Q = directivity factor. A value of 2 corresponds to hemispherical spreading over solid ground.

3. Lp = Lw + 10 × log ( Q / 4 π r2); Lp = sound pressure (noise) level, Lw = sound power level, r = distance in meters (50' = 15.24 m) Operational Noise Analysis Table 5. Noise Levels Due to Martha McLean Parking Lot at the Nearest Sensitive Receptors in the City of Riverside

4. Lmax noise levels typically occur when the loudest source is closest to the receiver. For this reason, calculations for Lmax propagation only consider the closest distance between the source and receiver.

5. Hard site calculations assume acoustically hard ground conditions with an attenuation rate of 6 dB per doubling of distance. Soft site calculations assume acoustically soft ground conditions with an attenuation rate of 7.5 dB per doubling of distance. Hard site conditions are assumed where noise propagates primarily over the parking lot surface.

4. Hard site calculations assume acoustically hard ground conditions with an attenuation rate of 6 dB per doubling of distance. Soft site calculations assume acoustically soft ground conditions with an attenuation rate of 7.5 dB per doubling of distance. Hard site conditions are assumed where noise propagates primarily over the parking lot surface.

Operational Noise Analysis Table 6. Noise Levels Due to Martha McLean Parking Lot at the Nearest Sensitive Receptors in the City of Jurupa Valley
Riverside Gateway Parks Program Martha McLean Anza Narrows Park Receiver
Sound Power
Level, dBA1 Q2
Reference Noise
Level @ 50 feet, L50
dBA3
Closest
Distance,
feet
Farthest
Distance,
feet
Acoustical
Average
Distance, feet
Hard or
Soft Site?
Noise
Reduction Due
to Distance4
Parking Lot
Noise Levels,
dBA L50
5681 Tucson Ct 91.0 2 59.3 35 2350 287 hard -15.2 44.2
5965 Tucson Ct 91.0 2 59.3 110 2310 504 hard -20.1 39.3 6027 Sheppard St 91.0 2 59.3 540 2020 1044 soft -33.0 26.4 6019 William St 91.0 2 59.3 690 1800 1114 Soft -33.7 25.6

1. Sound power level estimated using SoundPLAN software based on 71 trips per hour.

2. Q = directivity factor. A value of 2 corresponds to hemispherical spreading over solid ground.

3. Lp = Lw + 10 × log ( Q / 4 π r2); Lp = sound pressure (noise) level, Lw = sound power level, r = distance in meters (50' = 15.24 m) Receiver
Sound Power
Level, dBA1 Q2
Reference Noise
Level @ 50 feet, Lmax
dBA3
Closest
Distance,
feet
Farthest
Distance,
feet
Acoustical
Average
Distance, feet4
Hard or
Soft Site?
Noise
Reduction Due
to Distance5
Parking Lot
Noise Levels,
dBA Lmax
5760 Riverview Dr 98.1 2 66.5 1610 - - Soft -37.7 28.8

1. Sound power level estimated using SoundPLAN software based on car door slamming.

2. Q = directivity factor. A value of 2 corresponds to hemispherical spreading over solid ground.

3. Lp = Lw + 10 × log ( Q / 4 π r2); Lp = sound pressure (noise) level, Lw = sound power level, r = distance in meters (50' = 15.24 m) Operational Noise Analysis Table 5. Noise Levels Due to Martha McLean Parking Lot at the Nearest Sensitive Receptors in the City of Riverside

4. Lmax noise levels typically occur when the loudest source is closest to the receiver. For this reason, calculations for Lmax propagation only consider the closest distance between the source and receiver.

5. Hard site calculations assume acoustically hard ground conditions with an attenuation rate of 6 dB per doubling of distance. Soft site calculations assume acoustically soft ground conditions with an attenuation rate of 7.5 dB per doubling of distance. Hard site conditions are assumed where noise propagates primarily over the parking lot surface.

4. Hard site calculations assume acoustically hard ground conditions with an attenuation rate of 6 dB per doubling of distance. Soft site calculations assume acoustically soft ground conditions with an attenuation rate of 7.5 dB per doubling of distance. Hard site conditions are assumed where noise propagates primarily over the parking lot surface.

Operational Noise Analysis Table 6. Noise Levels Due to Martha McLean Parking Lot at the Nearest Sensitive Receptors in the City of Jurupa Valley
Riverside Gateway Parks Program Martha McLean Anza Narrows Park Receiver
Play Noise Levels,
dBA L50
Band Shell Noise
Levels, dBA L50
Parking Lot Noise
Levels, dBA L50
Combined Noise
Levels, dBA L50
5681 Tucson Ct 31.8 46.7 44.2 48.7
5965 Tucson Ct 32.2 47.5 39.3 48.2
6027 Sheppard St 33.2 61.1 25.6 61.1
6019 William St 39.3 61.6 25.6 61.7
Receiver
Play Noise Levels,
dBA Lmax
Band Shell Noise
Levels, Lmax
Parking Lot Noise
Levels, dBA Lmax
Combined Noise
Levels, dBA Lmax
5760 Riverview Dr 49.1 55.9 28.8 56.7
Operational Noise Analysis Table 8. Combined Noise Levels Due to On Site Activity at Martha McLean Park at the Nearest Sensitive Receptors in the City of Jurupa Valley Operational Noise Analysis Table 7. Combined Noise Levels Due to On Site Activity at Martha McLean Park at the Nearest Sensitive Receptors in the City of Riverside Riverside Gateway Parks Program Martha McLean Anza Narrows Park Construction Vibration Analysis Table 1. Potential Building Damage Vibration attenuation constant (n): 1.1
Building Category:

Extremely fragile
historic buildings,
ruins, ancient
monuments
Fragile
buildings
Historic and
some old
buildings
Older
residential
structures
New
residential
structures
Modern
industrial/
commercial
buildings
Vibration Damage Impact
Criteria, PPV, in/s: 0.08 0.1 0.25 0.3 0.5 0.5
Vibratory roller 0.21 61 50 22 19 12 12
Large bulldozerb 0.089 28 23 10 9 6 6
Small bulldozerc 0.003 2 2 1 1 1 1
a Obtained from "Transportation and Construction Vibration Guidance Manual", Caltrans 2020 b Considered representative of any full size/large excavator, dozer, backhoe, etc. c Considered representative of any small excavator, dozer, backhoe, etc.

Equipment Item
Reference PPV
at 25 feet, in/s a
Distance to Impact Criteria,
feet:

Riverside Gateway Parks Program Martha McLean Anza Narrows Park Construction Vibration Analysis Table 2. Human Perception Vibration attenuation constant (n): 1.1
Perceptibility
Classification:

Barely
perceptible
Distinctly
perceptible
Strongly
perceptible Severe
Perceptibility Criteria,
PPV, in/s: 0.01 0.04 0.1 0.4
Vibratory roller 0.21 399 113 50 14 Large bulldozerb 0.089 183 52 23 7 Small bulldozerc 0.003 9 3 2 1 a Obtained from "Transportation and Construction Vibration Guidance Manual", Caltrans 2020 b Considered representative of any full size/large excavator, dozer, backhoe, etc. c Considered representative of any small excavator, dozer, backhoe, etc.

Equipment Item
Reference PPV
at 25 feet, in/s a
Distance to Impact Criteria,
feet:

Riverside Gateway Parks Program Martha McLean Anza Narrows Park Riverside Gateway Parks Program
Jurupa Avenue Trailhead
Modeling Appendices
Construction Noise Analysis Table 1. Phase 1, Site Preparation Item No. Description
13 Dozer 81.7 0.4 1 77.7 81.7
29 Loader (Front End Loader) 79.1 0.4 1 75.1 79.1
Combined Equipment 79.6 81.7
Construction Noise Analysis Table 2. Phase 2, Grading
Item No. Description
23 Grader 85.0 0.4 1 81.0 85.0
18 Excavator 80.7 0.4 1 76.7 80.7
13 Dozer 81.7 0.4 1 77.7 81.7
29 Loader (Front End Loader) 79.1 0.4 2 78.1 79.1
Combined Equipment 84.7 85.0
Construction Noise Analysis Table 3. Phase 3, Building Construction Item No. Description
12 Crane 80.6 0.16 1 72.1 80.6
72 Forklift (based on front loader) 79.1 0.4 2 78.1 79.1 29 Loader (Front End Loader) 79.1 0.4 1 74.5 79.1
69 Welder/Torch 74 0.4 1 70.0 74.0
Combined Equipment 80.8 80.6
Leq(h),
dBA
Lmax,
dBA
Usage
Factor1,2
Leq(h),
dBA
Number
of Units
Leq(h),
dBA
Lmax,
dBA
Equipment Typical
Level @
50', dBA1
Lmax,
dBA
Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Riverside Gateway Parks Program Jurupa Avenue Trailhead Construction Noise Analysis Table 4. Phase 4, Paving
Item No. Description
34 Paver 77.2 0.5 2 77.2 77.2
75 Paving Equipment (based on p 77.2 0.5 2 77.2 77.2
31 Mixer, Concrete (or concrete m 78.8 0.4 1 74.8 78.8
29 Loader (Front End Loader) 79.1 0.4 1 75.1 79.1
44 Roller 80.0 0.2 2 76.0 80.0
Combined Equipment 83.2 80.0
FHWA Roadway Construction Noise Model (RCNM), Version 1.1, December 8, 2008; and/or "Transit Noise and Vibration Impact Assessment Manual", FTA Report No. 0123, September 2018; and/or "Noise from Construction Equipment and Operations, Building Equipment, and Home Equipment Typical
Level @
50', dBA1
Usage
Factor1,2
Number
of Units
Leq(h),
dBA
Lmax,
dBA

2. Usage Factor = percentage of time equipment is operating in noisiest mode while in use

1. Obtained or estimated from:

Riverside Gateway Parks Program Jurupa Avenue Trailhead Construction Noise Analysis Table 5. Noise Levels at Closest Receivers Receiver
Acoustical
Average
Phase 1 Site
Preparation
Phase 2
Grading
Phase 3
Building
Construction Phase 4 Paving
Reference distance, 50 feet 50 79.6 84.7 80.8 83.2
7164 Bradford Street 126 70 75 71 73
7120 Bradford Street 100 72 77 73 76
7106 Bradford Street 140 68 74 70 72
6948 Glendale Avenue 977 47 52 48 51
8607 Parker Way 1187 45 50 46 49
Construction Noise Level, Leq(h), dBA
Riverside Gateway Parks Program Jurupa Avenue Trailhead Operational Noise Analysis Table 1. Noise Levels Due to Jurupa Avenue Trailhead Play Areas Receiver/Noise Source
Reference
Noise Level
@ 50 feet,
L50 dBA1
Reference
Number of
Children
Playing1
Assumed
Number of
Children
Playing
Noise
Adjustment for
Number of
Children, dBA2
Distance,
feet
Hard
or Soft
Site?
Noise
Adjustment
for Distance3
Play Noise
Levels,
dBA L50 Combined
7164 Bradford St
Music Play 66.4 58 10 -7.6 470 Soft -24.3 34.4
Arroyo Play 66.4 58 10 -7.6 550 Soft -26.0 32.7
Nature Play 66.4 58 10 -7.6 620 Soft -27.3 31.4
7120 Bradford St
Music Play 66.4 58 10 -7.6 95 Soft -7.0 51.8
Arroyo Play 66.4 58 10 -7.6 160 Soft -12.6 46.1
Nature Play 66.4 58 10 -7.6 220 Soft -16.1 42.7
7106 Bradford St
Music Play 66.4 58 10 -7.6 140 Soft -11.2 47.6
Arroyo Play 66.4 58 10 -7.6 160 Soft -12.6 46.1
Nature Play 66.4 58 10 -7.6 220 Soft -16.1 42.7
6948 Glendale Avenue
Music Play 66.4 58 10 -7.6 980 Soft -32.3 26.5
Arroyo Play 66.4 58 10 -7.6 960 Soft -32.1 26.7
Nature Play 66.4 58 10 -7.6 960 Soft -32.1 26.7
8607 Parker Way
Music Play 66.4 58 10 -7.6 1080 Soft -33.4 25.4
Arroyo Play 66.4 58 10 -7.6 1010 Soft -32.6 26.1
Nature Play 66.4 58 10 -7.6 980 Soft -32.3 26.5

1. Source data from Linda Vista Elementary School in San Diego during morning and lunchtime recess.

2. Adjustment = 10 × log (assumed # children / reference # children); i.e., 10 × log (10 / 58)

3. Hard site calculations assume acoustically hard ground conditions with an attenuation rate of 6 dB per doubling of distance. Soft site calculations assume acoustically soft ground conditions with an attenuation rate of 7.5 dB per doubling of distance.

50.7 53.2

37.8 31.4

30.8 Riverside Gateway Parks Program Jurupa Avenue Trailhead Operational Noise Analysis Table 2. Noise Levels Due to Jurupa Avenue Trailhead Parking Lot Receiver
Sound Power
Level, dBA1 Q2
Reference Noise
Level @ 50 feet, L50
dBA3
Closest
Distance,
feet
Farthest
Distance,
feet
Acoustical
Average
Distance, feet
Hard or
Soft Site?
Noise
Reduction Due
to Distance4
Parking Lot
Noise Levels,
dBA L50
7164 Bradford St 77.0 2 45.4 520 720 612 Soft -27.2 18.2 7120 Bradford St 77.0 2 45.4 65 260 130 Soft -10.4 35.0 7106 Bradford St 77.0 2 45.4 50 230 107 Hard -6.6 38.8
6948 Glendale Avenue 77.0 2 45.4 760 910 832 Soft -30.5 14.9 8607 Parker Way 77.0 2 45.4 820 950 883 Soft -31.2 14.2

1. Sound power level estimated using SoundPLAN software based on 9 trips per hour.

2. Q = directivity factor. A value of 2 corresponds to hemispherical spreading over solid ground.

3. Lp = Lw + 10 × log ( Q / 4 π r2); Lp = sound pressure (noise) level, Lw = sound power level, r = distance in meters (50 feet = 15.24 meters)

4. Hard site calculations assume acoustically hard ground conditions with an attenuation rate of 6 dB per doubling of distance. Soft site calculations assume acoustically soft ground conditions with an attenuation rate of 7.5 dB per doubling of distance. Hard site conditions are assumed where noise propagates primarily over the parking lot surface.

Riverside Gateway Parks Program Jurupa Avenue Trailhead Operational Noise Analysis Table 3. Combined Noise Levels Due to On-Site Activity at Jurupa Avenue Trailhead Receiver
Play Noise Levels,
dBA L50
Parking Lot Noise
Levels, dBA L50
Combined Noise
Levels, dBA L50
7164 Bradford St 37.8 18.2 37.9
7120 Bradford St 53.2 35.0 53.3
7106 Bradford St 50.7 38.8 51.0
6948 Glendale Avenue 31.4 14.9 31.5
8607 Parker Way 30.8 14.2 30.9
Riverside Gateway Parks Program Jurupa Avenue Trailhead Construction Vibration Analysis Table 1. Potential Building Damage from Construction at Jurupa Avenue Trailhead Vibration attenuation constant (n): 1.1
Building Category:

Extremely fragile
historic buildings,
ruins, ancient
monuments
Fragile
buildings
Historic and
some old
buildings
Older
residential
structures
New
residential
structures
Modern
industrial/
commercial
buildings
Vibration Damage Impact
Criteria, PPV, in/s: 0.08 0.1 0.25 0.3 0.5 0.5
Vibratory roller 0.21 61 50 22 19 12 12
Large bulldozerb 0.089 28 23 10 9 6 6
Small bulldozerc 0.003 2 2 1 1 1 1
a Obtained from "Transportation and Construction Vibration Guidance Manual", Caltrans 2020 b Considered representative of any full size/large excavator, dozer, backhoe, etc. c Considered representative of any small excavator, dozer, backhoe, etc.

Equipment Item
Reference PPV
at 25 feet, in/s a
Distance to Impact Criteria,
feet:

Riverside Gateway Parks Program Jurupa Avenue Trailhead Construction Vibration Analysis Table 2. Human Perception of Construction at Jurupa Avenue Trailhead Vibration attenuation constant (n): 1.1
Perceptibility
Classification:

Barely
perceptible
Distinctly
perceptible
Strongly
perceptible Severe
Perceptibility Criteria,
PPV, in/s: 0.01 0.04 0.1 0.4
Vibratory roller 0.21 399 113 50 14
Large bulldozerb 0.089 183 52 23 7
Small bulldozerc 0 . 0 0 3 9321
a Obtained from "Transportation and Construction Vibration Guidance Manual", Caltrans 2020 b Considered representative of any full size/large excavator, dozer, backhoe, etc. c Considered representative of any small excavator, dozer, backhoe, etc.

Equipment Item
Reference PPV
at 25 feet, in/s a
Distance to Impact Criteria,
feet:

Riverside Gateway Parks Project Jurupa Avenue Trailhead