San Dimas City Council
December 10, 2024

December 2022Page 1300 – 2053
❖ RESULTS ❖
Grading
Area 20ft
Beyond 35%
Impact Area
Limit
Parcel Non
Conservation
Outside 35/
20% Zones
(acres)
Total
Impact
Area
35% Lot
Coverage
(acres)
MCV2 Alliance
Name1
Holland
Classification2
BSA
(acres) Mapped Land Cover
(acres)
(acres)
California walnut groves 31.01

4.10 3.71

0.95 0.53

0.02 5.06

0.08 9.30

1.05 Juglans californica. California walnut
Forest and woodland
California walnut groves Woodland Alliance (71200)
(disturbed)
Quercus agrifolia
Forest &
Woodland Alliance
coast live oak
woodland
(71160)
Coast live oak woodland
and forest (disturbed) 3.54 0.53 0.05 0.98 1.56
Opuntia littoralis -
Opuntia oricola -
Cylindropuntia
prolifera
southern coastal
Coast prickly pear scrub bluff scrub
Developed/Ornamental

3.85 <0.01

14.28 <0.01 0.33

4.67 0.33
(31200)
Shrubland Alliance
n/a n/a 25.28 0.70 19.64
7145/ San Dimas Municipal Code Text Amendment
Biological Resources Evaluation Report

December 2022Page 1301 – 2053
❖ RESULTS ❖
Grading
Area 20ft
Beyond 35%
Impact Area
Limit
Parcel Non
Conservation
Outside 35/
20% Zones
(acres)
Total
Impact
Area
35% Lot
Coverage
(acres)
MCV2 Alliance
Name1
Holland
Classification2
BSA
(acres) Mapped Land Cover
(acres)
(acres)
Schinus [molle,
terebinthifolius] -
Myoporum laetum southern riparian Pepper tree groves 0.81 0.08

0.74 <0.01 0.07

0.83 0.15

0.94 Forest & forest (31200)
Woodland SemiNatural Alliance
non-native
grassland
(42200)
Upland mustards or starthistle fields 10.89 0.11
Brassica nigra -
Centaurea
(solstitialis,
melitensis)
Herbaceous SemiNatural Alliance non-native
grassland
(42200)
Upland mustards or starthistle fields (mowed) 16.71 4.87 0.72

2.12 3.76 9.35
TOTAL 105.43 26.97 16.93 45.27
7145/ San Dimas Municipal Code Text Amendment
Biological Resources Evaluation Report

December 2022Page 1302 – 2053
❖ RESULTS ❖
Grading
Area 20ft
Beyond 35%
Impact Area
Limit
Parcel Non
Conservation
Outside 35/
20% Zones
(acres)
Total
Impact
Area
35% Lot
Coverage
(acres)
MCV2 Alliance
Name1
Holland
Classification2
BSA
(acres) Mapped Land Cover
(acres)
(acres)
MCV2 Alliance Name: naming conventions based on natural community descriptions in Manual of California Vegetation Second Edition (Sawyer et al. 2009) California’s standard vegetation classification for biological consulting firms, planners, and state and federal agencies, including the California Department of Fish and Game, United States Forest Service, National Park Service, and United States Geological Survey Holland Classification: naming conventions based on natural community descriptions in Preliminary Descriptions of the Terrestrial Natural Communities of California (Holland, 1986). as the classification represented is no longer supported by the State of California. It has been replaced by the National Vegetation Classification System (Ecological Society of America and NatureServe) and its California expression, The Manual of California Vegetation, Second Edition (Sawyer, Keeler-Wolf and Evens 2009) under Section 1940 of the Fish and Game Code. The MCV2 should be used when describing existing conditions in environmental documents, assessing impacts, and mapping vegetation.
7145/ San Dimas Municipal Code Text Amendment
Biological Resources Evaluation Report

December 2022Page 1303 – 2053
❖ RESULTS ❖
Some of the vegetation communities and disturbed features identified and mapped within the BSA during the literature review and field surveys are not considered sensitive because they meet the criteria listed in Section 4.1.3.1 of this BRE. Four sensitive land cover types/vegetation communities were identified within the BSA.

Characteristics of each plant community and disturbed features are described in the following sections. Plant species associated with onsite vegetation communities are also described.

5.2.1 California Buckwheat Scrub (Eriogonum fasciculatum Shrubland Alliance) Approximately 2.85 acres of California buckwheat scrub was mapped within the BSA. California buckwheat scrub (Eriogonum fasciculatum shrubland alliance) occurs on upland slopes, arroyos experiencing intermittent flooding, channels and washes. This alliance occurs on coarse, well drained soils that are moderately acidic to slightly saline (CNPS, 2022b). California buckwheat is the dominant species of this mapped land cover. This observed scrub community is best characterized as Diegan coastal sage scrub described in the Preliminary Descriptions of the Terrestrial Communities of California (Holland 1986). in the A Manual of California Vegetation Second Edition (Sawyer et al., 2009) this species assemblage meets the membership rules for the Eriogonum fasciculatum shrubland alliance (California buckwheat scrub).

Sawyer et al. describes California buckwheat scrub as a community that is a nearly pure stand of California buckwheat. Weeds and other coastal sage scrub shrubs occur, but in low densities. The shrub canopy is continuous to intermittent. The herbaceous layer is variable. This community is usually one of the first of the coastal scrubs to establish in mechanically disturbed areas, such as road cuts or slope failures, and it persists in areas with light to moderate grazing.

California buckwheat scrub has been designated by NatureServe as a secure (G5 and S5) natural community. Secure communities are common, widespread, and abundant in the state.

This community is considered low priority for inventory by CDFW and is not considered sensitive (CDFW, 2022a; CNPS, 2022b, NatureServe, 2022).

However, California buckwheat scrub is considered a sensitive and protected vegetation community when found to support special status (listed) species, such as the California gnatcatcher (CDFW, 2022a; CNPS, 2022b).

5.2.2 California Buckwheat Scrub, Disturbed (Eriogonum fasciculatum Shrubland Alliance) There are approximately 1.54 acres of disturbed California buckwheat scrub in the BSA. This mapped land cover is as described above. However, this land cover exists in a disturbed state because it contains areas that have been altered due to human activities resulting in significant soil compaction and reduction in habitat quality.

Onsite areas given the designation of “disturbed” indicate that more than 20 percent of the given polygon consists of non-native or invasive species, but did not meet the criteria to meet the membership rules for other non-native vegetation communities, such as upland mustards/star thistle fields. In its disturbed state, this vegetation community is considered of moderate to low habitat quality.

This community is considered low priority for inventory by CDFW and is not considered sensitive (CDFW, 2022a; CNPS, 2022b).
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Biological Resources Evaluation Report Page 1304 – 2053 December 2022 ❖ RESULTS ❖
However, California buckwheat scrub is considered a sensitive and protected vegetation community when found to support special-status (listed) species, such as the California gnatcatcher (CDFW, 2022a; CNPS, 2022b).

5.2.3 California Sagebrush – Black Sage Scrub (Artemisia californica - Salvia mellifera Shrubland Alliance)
Approximately 4.86 acres of California sagebrush – black sage scrub was identified in the BSA.

California sagebrush – black sage scrub is characterized by the co-dominance of both California sagebrush and black sage with a 30 to 60 percent relative cover in the shrub canopy. This community is typically found on steep east to-southwest-facing slopes in soils that are usually colluvial (CNPS, 2022b). At the project site, the understory ground cover is dominated by leaf litter, with low cover of non-native grass and forb species near the canopy's drip line.

This community is categorized as apparently (S4 and G4), which describes natural communities that are at moderate risk of extirpation in the jurisdiction due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors.

This community is not considered sensitive by CDFW (CDFW, 2022a; CNPS, 2022b).

However, California sagebrush – black sage scrub is considered a sensitive and protected natural community when found to support special status (listed) species, such as the California gnatcatcher (CDFW, 2022a; CNPS, 2022b; NatureServe, 2022).

5.2.4 California Walnut Groves (Juglans californica Forest & Woodland Alliance) Approximately 31.01 acres of California walnut groves was identified within the BSA. Mature California black walnut trees are the dominant and most prevalent tree species in the BSA, in some areas reaching 100 percent cover. California walnut trees occur primarily in slope depressions and swales on southern facing slopes and throughout northern facing slopes. California walnut groves are characterized by the dominance of California black walnut in densities of greater than 50 percent of relative cover in the tree canopy layer or 30 percent relative cover if codominant with coast live oak (CNPS, 2022b). The canopy in this vegetation community varies from open to continuous and the shrub layer consists of sparsely distributed herbs and grasses. California black walnut can reach a height of up to 30 feet and stands occur in association with annual grassland, mesic chaparral, coastal sage scrub, oak woodland, and riparian vegetation (CNPS, 2022b).

This community is categorized by NatureServe as vulnerable (G3 and S3.2), which are natural communities that are at moderate risk of extirpation in the jurisdiction due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors. considered sensitive by CDFW (CDFW, 2022a; NatureServe, 2022).

5.2.5 California Walnut Groves, Disturbed (Juglans californica Forest & Woodland Alliance) Approximately 4.10 acres of disturbed California walnut groves was identified in the BSA. This mapped land cover is as described above. However, this land cover exists in a disturbed state because it contains areas that have been altered by human activities resulting in significant soil compaction and reduction in habitat quality. California black walnut is the dominant canopy species of this mapped land cover. The canopy in this vegetation community varies from open to continuous and the shrub layer consists of sparsely distributed herbs and grasses. California black walnut can reach 7145/San Dimas MCTA 20-0005 Page 5-8
Biological Resources Evaluation Report Page 1305 – 2053 December 2022 ❖ RESULTS ❖
a height of up to 30 feet and stands occur in association with annual grassland, mesic chaparral, coastal sage scrub, oak woodland, and riparian vegetation (CNPS, 2022b).

Onsite areas given the designation of “disturbed” indicate that more than 20 percent of the given polygon consists of non-native or invasive species, but did not meet the criteria to meet the membership rules for other non-native vegetation communities, such as upland mustards/star thistle fields. In its disturbed state, this vegetation community is considered of moderate to low habitat quality. Although if found to support listed species, would be protected as sensitive, with compensatory mitigation likely assigned a reduced ratio.

This community is categorized by NatureServe as vulnerable (G3 and S3.2), which describes natural communities that are at moderate risk of extirpation in the jurisdiction due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors (NatureServe, 2022). This community is considered sensitive by CDFW (CDFW, 2022a).

5.2.6 Coast Live Oak Woodland and Forest, disturbed (Quercus agrifolia Forest & Woodland Alliance)
Approximately 3.54 acres of coast live oak woodland was identified in the BSA. Coast live oak woodland is characterized by the dominance of coast live oak in densities of greater than 50 percent of relative cover in the tree canopy layer (CNPS, 2022b). The understory in this vegetation community is typically sparse to intermittent and the herbaceous layer consists of sparsely distributed herbs, due to the natural mulch dropped by the oak trees that can inhibit germination of plant seedlings. Coast live oaks can reach a canopy height of 30 meters, but usually vary from nine to 22 meters (Sawyer et al., 2009; Barbour and Minnich, 2000). Canopy coverage varies between continuous to open. Shrub cover is occasional or common with the ground layer varying from grassy to absent (Sawyer et al. 2009). Woodlands may intergrade with grasslands such that shrub cover becomes diminished and herbaceous cover can reach 80 percent (Holland and Keil, 1995; Barbour and Minnich, 2000; CNPS, 2022b).

This community is considered vulnerable (G3 and S3) which describes natural communities that are at moderate risk of extirpation in the jurisdiction due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors; this community considered sensitive (CDFW, 2022a; NatureServe, 2022).

5.2.7 Coast Prickly Pear Scrub (Opuntia littoralis - Opuntia oricola - Cylindropuntia prolifera Shrubland Alliance)
Approximately 3.85 acres of coast prickly pear scrub was identified in the BSA. Coast prickly pear scrub is characterized by the dominance of coastal prickly pear in densities greater than 50 percent of relative cover in the shrub canopy layer or greater than 30 percent if sage scrub species, such as California buckwheat, are co-dominant. The canopy is intermittent or continuous; the herbaceous layer is open to continuous and diverse. This community is typically found on south-facing slopes and headlands in shallow loam and clay soils that may be rocky (CNPS, 2022b). Coast prickly pear is the dominant species of this mapped land cover. This community is categorized as vulnerable (S3 and G4), which describes natural communities that are at moderate risk of extirpation in the jurisdiction due to a fairly restricted range, relatively few populations or occurrences, recent and widespread declines, threats, or other factors.

This vegetation community is considered sensitive by CDFW. (CDFW, 2022a; NatureServe, 2022). 7145/San Dimas MCTA 20-0005 Page 5-9
Biological Resources Evaluation Report Page 1306 – 2053 December 2022 ❖ RESULTS ❖

5.2.8 Developed/Ornamental
Approximately 25.28 acres of the developed/ornamental land cover type occurs in the BSA. includes areas that often support man-made structures such as houses, sidewalks, buildings, parks, water tanks, flood control channels and transportation infrastructure (streets, bridges and culverts), as well as turf lawns and other landscaped areas containing non-native, ornamental plant species. Within the BSA, the Developed/Ornamental land cover type comprises single-family residential homes and associated paved surfaces such as roadways and driveways, utility structures, and landscaped gardens and yards with ornamental trees and plants.

This land cover type is not considered sensitive by CDFW (CDFW, 2022a; NatureServe, 2022).

5.2.9 Pepper tree groves (Schinus [molle, terebinthifolius] - Myoporum laetum Forest & Woodland Semi-Natural Alliance)
Approximately 0.81 acre of Pepper tree or Myoporum groves (Schinus [molle, terebinthifolius] - Myoporum laetum Forest & Woodland Semi-Natural Alliance (Pepper tree groves) occurs on the project site. This semi-natural alliance is characterized by the dominance of Myoporum laetum, Schinus molle or Schinus terebinthifolius in the tree canopy; shrubs can occur infrequently or commonly (CNPS, 2022b). In the BSA, this vegetation community is dominated by the non-native Peruvian pepper tree, which is currently assigned a limited rating on the California Invasive Plant Inventory (Cal IPC, 2006). See Section 5.3.2 for defined California Invasive Plant Council (Cal-IPC) ratings and criteria for the rating system.

This vegetation community is not considered sensitive by CDFW (CDFW, 2022a).

5.2.10 Upland Mustards or Star-Thistle Fields (Brassica nigra - Centaurea (solstitialis, melitensis) Herbaceous Semi-Natural Alliance)
Approximately 10.89 acres of upland mustards or star-thistle fields (upland mustard fields) were identified in the BSA in senesced, post-fruiting, “mature” condition. Upland mustard fields are characterized by the dominance of black mustard, short-podded mustard, or other mustards occurring with non-native plants in densities greater than 80 percent of relative cover in the herbaceous layer; cover is open to continuous. This community is typically found on fallow fields, rangelands, grasslands, roadsides, levee slopes, disturbed coastal scrub, riparian areas, cleared roadsides, waste places in clay to sandy loam soils (CNPS, 2022b).

This vegetation community is not considered sensitive by CDFW (CDFW, 2022a; NatureServe, 2022).

5.2.11 Upland Mustards or Star-Thistle Fields, Mowed (Brassica nigra - Centaurea (solstitialis, melitensis) Herbaceous Semi-Natural Alliance) Approximately 16.71 acres of upland mustards or star-thistle fields (Upland mustard fields) were identified in the BSA in a manicured “mowed” condition. Mowed areas are generally associated with fire clearance (fuel modification) requirements within 200 feet of dwelling structures. Upland mustard fields are characterized by the dominance of black mustard, short-podded mustard, or other mustards occurring with non-native plants in densities greater than 80 percent of relative cover in the herbaceous layer; cover is open to continuous. This community is typically found on fallow fields, rangelands, grasslands, roadsides, levee slopes, disturbed coastal scrub, riparian areas, cleared roadsides, waste places in clay to sandy loam soils (CNPS, 2022b). 7145/San Dimas MCTA 20-0005 Page 5-10
Biological Resources Evaluation Report Page 1307 – 2053 December 2022 ❖ RESULTS ❖
This vegetation community is not considered sensitive by CDFW (CDFW, 2022a; NatureServe, 2022).

See Appendix A, Figure 9, Land Cover Overview Map; Figures 9a through 9e, Land Cover Mapbook; and Appendix E, Representative Site Photographs).

5.3 Plants
This section describes the plants detected during the field surveys and the special-status plants that have a potential to occur within the BSA as identified by the literature review and field surveys.

5.3.1 Plant Species Recorded During the Field Surveys
Approximately 53 plant species from 29 distinct plant families were observed within the BSA during the field survey. The dominant tree species are coast live oak and California black walnut, with occasional stands of Peruvian pepper trees. A list of plant species recorded within the BSA during the field surveys is provided in Appendix D, Plant and Wildlife Species Observed During the Field Surveys.

5.3.2 Non-Native Plants
Cal-IPC is a nonprofit organization that is dedicated to protecting California’s lands and waters from ecologically-damaging invasive plants through science, education and policy. It maintains an inventory that categorizes non-native invasive plants that threaten the state’s wildlands.

Non-native vegetation with a Cal-IPC high rating has severe ecological effects on physical processes, plant and animal communities, and vegetation structure. These exotic species’ reproductive biology and other attributes are conducive to moderate to high rates of dispersal and establishment. Most are widely distributed ecologically (Cal-IPC, 2022).

Non-native vegetation with a Cal-IPC moderate rating has substantial and apparent (but generally not severe) ecological effects on physical processes, plant and animal communities, and vegetation structure. Their reproductive biology and other attributes are conducive to moderate to high rates of dispersal, though establishment is generally dependent upon ecological disturbance. Ecological amplitude and distribution may range from limited to widespread.

Non-native vegetation species with a Cal-IPC limited rating are invasive, but their ecological effects are minor on a statewide level or there was not enough information to justify a higher score. Their reproductive biology and other attributes result in low to moderate rates of invasiveness. Ecological amplitude and distribution are generally limited, but these species may be locally persistent and problematic (Cal-IPC, 2022).

Fifteen of the recorded plant species are non-native. The non-native plant species listed below are assigned a Cal-IPC rating (Cal-IPC, 2022). They include the following listed below in Table 5.3-1, Recorded Invasive Plant Species with a Cal-IPC Rating.

Table 5.3-1

RECORDED INVASIVE PLANT SPECIES WITH A CAL-IPC RATING
Scientific Name (=Synonym) Common Name (=Synonym) Cal-IPC Rating Silybum marianum milk thistle
eucalyptus
limited
Eucalyptus spp. limited
7145/San Dimas MCTA 20-0005 Page 5-11
Biological Resources Evaluation Report Page 1308 – 2053 December 2022 ❖ RESULTS ❖
Scientific Name (=Synonym) Common Name (=Synonym) Cal-IPC Rating Salsola tragus Russian thistle
horehound
limited
Marrubium vulgare limited
Ricinus communis
Schinus molle
castor bean limited
Peruvian pepper tree
ripgut grass
limited
Bromus diandrus
Ailanthus altissima
Brassica nigra
moderate
moderate
moderate
moderate
moderate
moderate
moderate
high
tree of heaven
black mustard
Nicotiana glauca tree tobacco
Bromus diandrus
Ailanthus altissima
Atriplex semibaccata
Tamarix ramosissima
Bromus rubens
ripgut grass
tree of heaven
Australian saltbush
saltcedar
red brome high
No federally listed noxious weeds were observed onsite during the field surveys, per the USDA Animal and Plant Health Inspection Service (APHIS) Federal Noxious Weed List (USDA, 2010).

5.3.3 Listed Endangered, Threatened, Candidate, and State Rare Plants No federal or state listed plant species were observed within the BSA during the surveys (see Appendix D, Plant and Wildlife Species Recorded During the Field Surveys).

As discussed in Section 4.1.3, a literature review and query from publicly available databases (USFWS, 2022d; CNDDB, 2022a) for recorded observations of listed and sensitive species within a ten-mile radius of the BSA, determined that two listed plant species were determined to have a moderate potential to occur. These species are listed in Appendix B, Special-Status Species Occurrence Potential Determination.

Moderate Potential to Occur in the BSA
The BSA contains coastal sage scrub, coast live oak woodlands, California walnut groves, and other native vegetation. The soils in the BSA are clay and sandy-loam. These characteristics of the BSA result in the provision of suitable habitat for two listed plant species, which were determined to have a moderate potential to occur within the BSA (see Appendix B, Special-Status Species Occurrence Potential Determination, for the descriptions of the status rankings and for further discussion of these species):
•
•
thread-leaved brodiaea (Brodiaea filifolia) FT, SE, CRPR: 1B.1.

Nevin’s barberry (Berberis nevinii) FE, SE, CRPR: 1B.1

5.3.4 Sensitive Plants
No sensitive plant species were observed within the BSA during the general field surveys (Appendix D, Plant and Wildlife Species Observed During the Field Surveys). 7145/San Dimas MCTA 20-0005 Page 5-12
Biological Resources Evaluation Report Page 1309 – 2053 December 2022 ❖ RESULTS ❖
As discussed in Section 4.1.3, 12 sensitive plant species were determined to have at least a low potential to occur in the BSA; the majority were determined to have a moderate potential to occur in the BSA. These species are listed in Appendix B, Special-Status Species Occurrence Potential Determination.

Moderate Potential to Occur in the BSA
The following nine sensitive species that were determined to have a moderate potential to occur as a result of the literature study and field survey are listed below with their respective protection statuses determined by various state, federal, regional and local regulatory agencies are listed below (see Appendix B, Special-Status Species Occurrence Potential Determination, for the descriptions of the status rankings and for further discussion of these species). •
•
•
•
•
•
•
•
•
white rabbit-tobacco (Pseudognaphalium leucocephalum) CRPR: 2B.2 California satintail (Imperata brevifolia) CRPR: 2B.1
Plummer’s mariposa lily (Calochortus plummerae) CRPR: 4.2 slender mariposa lily (Calochortus clavatus var. gracilis) CRPR: 1B.2 intermediate mariposa lily (Calochortus weedii var. intermedius) CRPR: 1B.2 Robinson’s pepper grass (Lepidium virginicum var. robinsonii) mesa horkelia (Horkelia cuneata var. puberula) CRPR: 1B.1 Coulter’s saltbush (Atriplex coulteri) CRPR: 1B.2
many-stemmed dudleya (Dudleya multicaulis) CRPR: 1B.2
Low Potential to Occur in the BSA
The following three sensitive species that were determined to have a low potential to occur as determined by the results of the literature study and field survey. These plant species are listed below with their respective protection statuses determined by state (see Appendix B, Special-Status Species Occurrence Potential Determination, for the descriptions of the status rankings and for further discussion of these species).
•
•
•
Sonoran maiden fern (Thelypteris puberula var. sonorensis) CRPR: 2B.2 Greata’s asper (Symphyotrichum greatae [=Aster greatae]) CRPR 1B.3 Parry’s spineflower (Chorizanthe parryi var. parryi) CRPR: 1B.2

5.4 Wildlife
This Section describes the wildlife observed and/or detected during the field surveys and the specialstatus wildlife that have a potential to occur within the BSA as determined by the literature review and field surveys. In this BRE, wildlife nomenclature and taxonomic sequence are based on the following:
•
•
Amphibians and reptiles: CDFW’s Complete List of Amphibian, Reptile, Bird and Mammal Species in California (CDFW, 2016).

Birds: American Ornithologists’ Union (AOU) Check-list of North American Birds, 7th edition (AOU, 1998 and supplements).
7145/San Dimas MCTA 20-0005 Page 5-13
Biological Resources Evaluation Report Page 1310 – 2053 December 2022 ❖ RESULTS ❖
• Mammals: Mammal Species of the World (Wilson and Reeder, 2005).

5.4.1 Wildlife Species Recorded During the Field Surveys The BSA supports an assortment of wildlife and provides foraging, nesting, breeding, and cover habitat to reptiles, birds (year-round residents, seasonal residents, migrants), and mammals. During the field surveys, 17 bird species, seven mammal species, and one invertebrate species were observed within the BSA (see Appendix D, Plant and Wildlife Species Observed During the Field Surveys).

Wildlife survey limitations include:
• The biological field surveys were conducted during the daytime to maximize the detection of most wildlife. Birds represent the largest component of the fauna observed because most birds are active in the daytime. In contrast, daytime surveys usually result in few observations of mammals, many of which may only be active at night. Many mammal species may also have been unnoticed due to their subterranean habitat. •
•
•
•
Many species of reptiles, and mammals are secretive in their habits and are difficult for biologists to observe in a walking survey.

Many wildlife species are wide-ranging and/or they only occur on a seasonal basis; therefore, they may not have been present within the BSA at the time of the surveys.

Many species are nocturnal, move about a territory, may have become dormant for the season, or are less active during inclement or hot weather.

Additional wildlife species that likely use the BSA were not observed or indirectly detected during the field surveys due to their scarcity or the need for special survey methods.

Vegetation communities form the basis for wildlife habitat and provide the primary plant productivity upon which wildlife depends, along with nesting and denning sites, escape and movement cover, and protection from adverse weather. Some species are habitat specific for all their life history requirements, while many wildlife species move freely between vegetation communities to obtain all their life history needs. In general, more complex natural communities with more vegetation layers and more plant species provide higher value wildlife habitat than less complex vegetation communities. More complex communities have more niches for wildlife and usually support more animal species than less complex communities. Although simple communities may support few wildlife species, they may provide habitat for great numbers of those few species.

Birds
A variety of bird species are expected to be residents in the survey area, using the habitat throughout the year. Other species are present only during certain seasons. For example, the white-crowned sparrow (Zonotrichia leucophrys) and western bluebird (Sialia mexicana) are expected to occur in the BSA during the winter season and will then migrate north in the spring to breed during the summer.

Native bird species observed in the survey area include cliff swallow (Petrochelidon pyrrhonota), spotted towhee (Pipilo maculatus), lesser goldfinch (Spinus psaltria), American goldfinch, bushtit (Psaltriparus minimus), Nuttall’s woodpecker (Dryobates nuttallii), Cooper’s hawk (Accipiter 7145/San Dimas MCTA 20-0005 Page 5-14
Biological Resources Evaluation Report Page 1311 – 2053 December 2022 ❖ RESULTS ❖
cooperii), Bewick’s wren (Thryomanes bewickii), house wren (Troglodytes aedon), red-tailed hawk (Buteo jamaicensis), red-shouldered hawk (Buteo lineatus), and Anna’s hummingbird (Calypte anna).

The abovementioned species are common in southern California and are not listed as threatened or endangered; however, Nuttall’s woodpecker is a Bird of Conservation Concern and Cooper’s hawk is on the CDFW Watch List (season of concern: nesting). For a list of special-status birds that were determined to have a potential to occur in the BSA, refer to Appendix B, Special-Status Species and Potential Occurrence Determination.

Mammals
As with other taxonomic groups, the vegetation types present in the BSA offers habitat for a variety of mammals. Seven mammal species, including coyote (Canis latrans) and dusky-footed woodrat (Neotoma fuscipes) were observed during the field survey. These species are common in southern California and are not listed as threatened or endangered, and are not rare. A list of wildlife species that were observed during the surveys is located in Appendix D, Plant and Wildlife Species Observed During Field Surveys.

Bats occur throughout most of southern California and may use any portion of the survey area as foraging habitat. The oak woodland vegetation and the structures present in the survey area provides potential roosting habitat for bats; however, no bats or signs thereof were observed during the surveys. For a list of special-status mammals that were determined to have a potential to occur in the BSA, refer to Appendix B, Special-Status Species and Potential Occurrence Determination.

5.4.2 Listed Endangered, Threatened, and Candidate Wildlife One wildlife species that is a candidate for federal listing (overwintering population) was observed within the BSA during the field surveys. This species, monarch butterfly (Danaus plexippus pop. 1), is further discussed below. The literature review and field surveys concluded that the majority of the listed species in the wildlife inventory do not have more than a low potential to occur within the BSA due to a lack of suitable biological and physical features that are adequately needed to support them.

As discussed in Section 4.1.3, seven listed wildlife species were determined to have at least a low potential to occur in the BSA. One listed species in the wildlife inventory, monarch butterfly, was observed during the field survey. All species evaluated in the literature study, including those determined to have no potential or are not expected to occur, are listed in Appendix B, Special-Status Species Occurrence Potential Determination.

Present in the BSA
Monarch butterfly
Monarch butterfly was observed in the BSA during the field survey. Monarch butterflies are found across North America in areas of suitable feeding, breeding, and overwintering habitat. The two populations, referred to as the eastern and the western populations, are distinguished by separation by the Rocky Mountains.

Monarch presence in a given area within their range depends on the time of year. They are one of few migratory insects, traveling long distances between summer breeding habitat and winter habitat where they spend several months inactive. In the summer they range as far north as southern Canada. 7145/San Dimas MCTA 20-0005 Page 5-15
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In the fall the eastern population migrates to the cool, high mountains of central Mexico and the western population migrates to coastal California, where they spend the entire winter.

Butterflies have different diets during their larval caterpillar phase than they do as adults. Monarch caterpillars feed exclusively on the leaves of milkweed, wildflowers in the genus Asclepias. North America has several dozen native milkweed species with which monarchs coevolved and upon which they rely to complete their life cycle.

Milkweed produces toxins to deter animals from eating them, but monarchs have evolved immunity to these toxins. Monarch caterpillars store these toxins in their body as they feed, causing them to taste bad, which serves as a deterrent to predators. The toxins remain in their system even after metamorphosis, protecting them as adult butterflies (National Wildlife Federation, 2022).

The overwintering population of this butterfly is designated as federal candidate for listing.

Candidate species are plants and animals for which the USFWS has sufficient information on their biological status and threats to propose them for listing as endangered or threatened under the ESA, but for which development of a proposed listing regulation is precluded by higher priority listing actions to address species in greater need. A proposed regulation has not yet been published in the Federal Register for these species.

Moderate Potential to Occur in the BSA
The BSA contains coastal sage scrub, coast live oak woodlands, California walnut groves, and other native vegetation with riparian areas, and soils in the BSA are comprised of clay and sandy-loam.

These characteristics of the BSA result in the provision of suitable habitat for several listed wildlife species.

The following three listed species that were determined to have a moderate potential to occur as a result of the literature study and field survey are listed below with their respective protection statuses determined by various state, federal, regional and local regulatory agencies are listed below (see Appendix B, Special-Status Species Occurrence Potential Determination, for the descriptions of the status rankings and for further discussion of these species). •
•
•
coastal California gnatcatcher (Polioptila californica californica) FT, SSC least Bell’s vireo (Vireo bellii pusillus) FE, SE, Season of concern: nesting Southwestern willow flycatcher (Empidonax traillii extimus) FE, SE Coastal California gnatcatcher
The coastal California gnatcatcher (Polioptila californica; gnatcatcher) is found on the coastal slopes of southern California, from southern Ventura southward through Los Angeles, Orange, Riverside, San Bernardino, and San Diego counties into Baja California, Mexico. Within its range, the distribution of gnatcatcher is further defined by relatively narrow elevation limits. In general, inland populations of the gnatcatcher can be found below the 1,640-foot elevation, and coastal populations tend to be found below an elevation of 820 feet (CDFW, 2014).

The BSA contains suitable coastal sage scrub habitat to support this species. 7145/San Dimas MCTA 20-0005 Page 5-16
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Least Bell’s vireo
Least Bell’s vireo is a small, olive-grey migratory songbird, and is a summer resident of riparian areas in southern California. The species’ breeding distribution is currently restricted to eight California counties: Kern, San Diego, San Bernardino, Riverside, Ventura, Los Angeles, Santa Barbara, and Imperial. Preferred habitat for this species is dense willow-dominated riparian habitat with a welldeveloped understory. The understory shrub thickets provide nesting habitat. Willows are most commonly used. High and low shrub layers are used as foraging substrate. Other plant species used for nesting and foraging include California wild rose and coast live oak.

The BSA contains potentially suitable nesting habitat (coast live oak) required for this species.

Southwestern willow flycatcher
The breeding range of the southwestern willow flycatcher (Empidonax traillii extimus; SWFL) includes southern California, Arizona, New Mexico, southwestern Colorado, and extreme southern portions of Nevada and Utah. Southwestern willow flycatcher breed and forage in relatively dense riparian tree and shrub communities associated with rivers, swamps, and other wetlands, including lakes (e.g., reservoirs). SWFL suitable habitat contains: surface water, saturated soil, or herbaceous wetland plants present during the early summer months; woody riparian vegetation is present and covers a minimum aerial extent of 20 percent over a 0.5-acre section of floodplain or adjacent streamside terrace; dense clumps or stands of woody vegetation are present. SWFLs also nests in thickets dominated by the non-native tamarisk and Russian olive and in habitats where native and non-native trees and shrubs are present in essentially even mixtures.

The BSA contains potentially suitable nesting habitat for SWFL (woody vegetation, even mixtures of native and non-native trees and shrubs; the BSA may also contain saturated soils in the bottom of canyons within the BSA).

Low Potential to Occur in the BSA
The following three listed species that were determined to have a low potential to occur as a result of the literature study and field survey are listed below with their respective protection statuses determined by various state, federal, regional and local regulatory agencies are listed below (see Appendix B, Special-Status Species Occurrence Potential Determination, for the descriptions of the status rankings and for further discussion of these species). •
•
arroyo toad (Anaxyrus californicus) FE, SSC
Swainson’s hawk (Buteo swainsoni) ST, BCC, Season of concern: nesting

5.4.3 Sensitive Wildlife
Two sensitive wildlife species, Cooper’s hawk and Nuttall’s woodpecker, were observed within the BSA during the field surveys. The literature review and field surveys concluded that the majority of the sensitive species in the wildlife inventory have at least a low potential to occur within the BSA due to the presence of suitable biological and physical features that are adequately needed to support them (see Appendix D, Plant and Wildlife Species Observed During the Field Surveys).

As discussed in Section 4.1.3, 20 sensitive wildlife species were determined to have at least a low potential to occur. Two of the species in the wildlife inventory, Nuttall’s woodpecker and Cooper’s 7145/San Dimas MCTA 20-0005 Page 5-17
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hawk, were observed during the field survey. These species are further discussed below. All species evaluated in the literature study, including those determined to have no potential or are not expected to occur, are listed in Appendix B, Special-Status Species Inventory and Potential Occurrence Determination.

Present in the BSA
Nuttall’s woodpecker
Nuttall’s woodpecker is a common, permanent resident of low-elevation riparian deciduous and oak habitats, typically occurring in the Central Valley, Transverse and Peninsular Ranges, in the Coast Ranges north to Sonoma County and rarely to Humboldt County, and in lower portions of the Cascade Range and Sierra Nevada. This woodpecker primarily forages in oak and riparian deciduous habitats while pecking, probing, and drilling for sap. Approximately 80 percent of the diet of this species is comprised of adult and larval insects, mostly beetles. Berries, poison-oak seeds, nuts, other fruits are also occasionally consumed. Breeding season occurs from late March through early July with peak activity occurring from April to early June (Bent, 1939; CDFW, 2022b; 2014; Miller and Bock, 1972).

This species is currently designated by USFWS as a bird of conservation concern (BCC). BCC species are those listed in the USFWS’ 2008 Birds of Conservation Concern report (USFWS, 2008). The report identifies species, subspecies, and populations of all migratory and non-migratory bird species (beyond those already designated as federally threatened or endangered) that, without additional conservation actions, are likely to become candidates for listing under the ESA. While the bird species included in the report is priorities for conservation action, the list makes no finding with regard to whether they warrant consideration for ESA listing.

Cooper’s hawk
Cooper’s hawks are medium-sized hawks of the woodlands. These raptors are commonly sighted in parks, neighborhoods, over fields, and even along busy streets if there are large trees nearby for perching and adequate prey species such as other birds and small mammals. They prefer to breed in more densely wooded areas than occur in the BSA, such as woodland openings and edges of riparian and oak habitat (CDFW, 2014; Cornell Lab or Ornithology, 2022). Cooper’s hawks build nests in pines, oaks, Douglas-firs, beeches, spruces, and other trees. Males typically build the nest over a period of about two weeks, with just the slightest help from the female. Nests are piles of sticks roughly 27 inches in diameter and 6-17 inches high with a cup-shaped depression in the middle, 8 inches across and 4 inches deep. The cup is lined with bark flakes and, sometimes, green twigs. (Cornell Lab of Ornithology, 2022)
Cooper’s hawk is included on the CDFW Watch List (CNDDB, 2022b). The CDFW Watch List includes birds identified in the California Bird Species of Special Concern (Shuford and Gardali, 2008) report and have or have had one of the following statuses: they are not on the current CDFW species of special concern list, but were on previous lists and they have not been state-listed under CESA; they were previously state or federally listed and now are on neither list; or, they are on the list of fully protected species. The report identifies species, subspecies, and populations of all migratory and non-migratory bird species (beyond those already designated as federal threatened or endangered) that, without additional conservation actions, are likely to become candidates for listing under the ESA.
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Moderate Potential to Occur in the BSA
The BSA contains coastal sage scrub, coast live oak woodlands, California walnut groves, and other native vegetation. In addition, the sloping topography of the BSA may enable to formation of ephemeral water sources, especially near the drainages. Topography of the BSA also creates favorable conditions for many sensitive species that utilize sloping surfaces. The soils in the BSA are clay and sandy-loam. Lastly, the region of the BSA has a mild, semi-arid climate with Mediterranean characteristics. These characteristics of the BSA result in the provision of suitable habitat for a diverse array of sensitive wildlife species.

The following 15 sensitive species that were determined to have a moderate potential to occur as a result of the literature study and field survey are listed below with their respective protection statuses determined by various state, federal, regional and local regulatory agencies are listed below (see Appendix B, Special-Status Species Occurrence Potential Determination, for the descriptions of the status rankings and for further discussion of these species). •
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
pallid bat (Antrozous pallidus) SSC
Crotch’s bumble bee (Bombus crotchii) SSC
merlin (Falco columbarius) WL
western spadefoot (Spea hammondii) SSC
yellow warbler (Setophaga petechia) SSC, BCC
large-blotched ensatina (Ensatina eschscholtzii klauberi) SSC coastal cactus wren (Campylorhynchus brunneicapillus sandiegensis) BCC two-striped garter snake (Thamnophis hammondii) SSC
Blainville’s horned lizard (Phrynosoma blainvilli) SSC
California glossy snake (Arizona elegans occidentalis) SSC hoary bat (Lasiurus cinereus) WBWG:M
western mastiff bat (Eumops perotis californicus) SSC, WBWG:H southern California rufous-crowned sparrow (Aimophila ruficeps canescens) WL mountain lion (Puma concolor) California Fish and Game Code §§ 4800 – 4810 white-tailed kite (Elanus leucurus) fully protected
Low Potential to Occur in the BSA
The following 12 sensitive species that were determined to have a low potential to occur as a result of the literature study and field survey are listed below with their respective protection statuses determined by various state, federal, regional and local regulatory agencies are listed below (see Appendix B, Special-Status Species Occurrence Potential Determination, for the descriptions of the status rankings and for further discussion of these species). • golden eagle (Aquila chrysaetos) fully protected, WL, BCC, CDF:S, Season of Concern: nesting and wintering
•
•
•
•
•
•
red-diamond rattlesnake (Crotalus ruber) SSC
southern California legless lizard (Anniella stebbinsi) SSC burrowing owl (Athene cunicularia) BCC
California spotted owl (Strix occidentalis occidentalis) SSC, BCC western yellow bat (Lasiurus xanthinus) SSC, WBWG:H
big free-tailed bat (Nyctinomops macrotis) SSC, WBWG:MH 7145/San Dimas MCTA 20-0005 Page 5-19
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• long-eared owl (Asio otus) SSC, Season of concern: nesting

5.5 Waters of the U.S. and State (including Wetlands)
UltraSystems biologists reviewed the aerial imagery to identify natural and man-made drainages (rivers, streams, creeks), open water (lakes, ponds, etc.), and other features that may be subject to federal or state jurisdictional authority within watersheds within the BSA (see Appendix A, Figure 11, USGS Surface Waters and Watersheds). They also reviewed USGS 7.5-Minute Topographic Map for the San Dimas Quadrangle to identify potential presence or absence of onsite waterways. Based on these reviews, the biologists several potential waters of the U.S. and/or State within the BSA.

The BSA contains several NWI-mapped features including freshwater forested/shrub wetlands, riverine areas, and forested/shrub riparian areas (see Appendix A, Figure 12a through 12e, Biological Constraints Mapbook).

During the survey, evidence of hydrologic features such as streams, wetlands, and ponds were evaluated. During the biological surveys, UltraSystems biologists observed hydrologic features including vegetated riverine wetlands (e.g., riparian areas).

5.6 Critical Habitat
The BSA is located less than 1.5 miles from designated critical habitat for the coastal California gnatcatcher within and surrounding Frank G. Bonelli Regional Park (Appendix A, Figure 13, USFWS Critical Habitat). Additionally, the BSA is less than one mile north of designated critical habitat for coastal California gnatcatcher which is mapped along the south-facing slopes of the San Jose Hills from northwest of the I-10/SR-57 Interchange to Highway 39 (Azusa Avenue) in West Covina.

5.7 Wildlife Corridors
A wildlife corridor is a connection of habitat, generally native vegetation, which joins two or more larger areas of similar habitat that are otherwise separated by natural barriers, changes in vegetation composition, or land permanently altered for human activities (e.g., parks, cemeteries); and by infrastructure, including roads, railroads, residential development, or fencing. When native vegetation is cleared, fragmented patches of open space or isolated “islands” of wildlife habitat are created. Fragmentation and habitat loss are the two main contributors to continuing biodiversity decline. The main goal of corridors is to facilitate movement of individuals, through dispersal, seasonal migration, and movement for foraging, breeding, cover, etc. Corridors allow for physical and genetic exchange between isolated wildlife populations and are critical for the maintenance of ecological processes, including allowing for the movement of animals and the continuation of viable populations and higher species diversity.

Wildlife corridors may either be contiguous strips of vegetation and habitat, such as ridgelines or riverbeds, or intermittent patches of habitat or physical features spaced closely enough to allow safe travel. Corridors can be natural, such as a riparian corridor, or man-made, such as culverts, tunnels, drainage pipes, walls, underpasses, overpasses, or streets. Man-made corridors are often referred to as “wildlife crossings” and they allow wildlife to pass over, under, or through physical barriers that otherwise hinder movement. Wildlife corridors also vary greatly in size, shape, and composition.

The BSA does not overlap with CDFW Essential Connectivity Areas, Natural Landscape Blocks, or other wildlife corridors. The nearest Small Natural Area is Via Verde Park, less than 0.75-mile east of 7145/San Dimas MCTA 20-0005 Page 5-20
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the BSA; the nearest Natural Landscape Block is approximately 1.5- mile east of the BSA at Frank G.

Bonelli Regional Park (CDFW, 2022c; see Appendix A, Figure 14, Wildlife Corridors). The Angeles National Forest, approximately five miles north of the BSA, is the nearest Essential Connectivity Area (Google Earth Pro, 2022; CDFW, 2022c).

Due to the urbanization of the region, movement of some mammals that require larger dispersal distances would likely be deterred. Species that are less restricted in movement and/or are welladapted to urbanized areas such as raccoon, skunk, coyote, and mountain lion (Puma concolor) likely move through areas of the BSA. The project area and a portion of the BSA support habitat, including movement habitat, for species on a local scale (habitat for reptiles, bird, and mammal species), and likely facilitates wildlife movement for some larger wildlife species on a regional scale.

Predators (e.g., coyotes) and smaller mammals (e.g., raccoons [Procyon lotor] and striped skunks [Mephitis mephitis]) are known to use medium- to low-density residential neighborhoods, golf courses, and washes for hunting and foraging, using washes (natural and channelized), culverts, underpasses, and city streets for travelling, often but not necessarily limited to overnight hours when human activity decreases (Baker and Timm, 1998; Grubbs and Krausman, 2009; Ng et. al., 2004).

Urban areas provide a unique ecosystem with ecological opportunity in the form of anthropogenic food sources such as discarded human food, pet food, human-associated fruits, and domestic animals (Larson et. al., 2020). Observations recorded during the biological surveys, including the coyote observed on the BSA, and examination of aerial imagery indicate that the BSA acts as a hunting, foraging, and movement area, and the BSA and surrounding areas are suitable wildlife movement corridors.

5.8 Significant Ecological Areas: East San Gabriel Significant Ecological Area The East San Gabriel Valley SEA is located in the easternmost portion of the San Gabriel Valley, which includes the San Jose Hills (see Appendix A, Figure 15, Significant Ecological Areas [SEAs]). For the purpose of delineating an area-wide ecological unit with interacting component habitat areas, this SEA includes incorporated as well as unincorporated lands. The area represents several ridgelines and hilltops and a major drainage at the eastern end of the San Jose Hills which have been surrounded by urban development over the past four decades. The largest component of this SEA is Frank G.

Bonelli Regional County Park (Bonelli Park) and a portion of Walnut Creek Park, both of which are unincorporated. Other component parts are South Hills Park and surrounding undeveloped land in the City of Glendora, Buzzard Peak and undeveloped hillsides to the southwest within the cities of West Covina and Walnut, undeveloped slopes to the west of Bonelli Park and Interstate 210 (I-210) in the City of San Dimas, and Elephant Hill and an adjoining ridgeline in the City of Pomona (PCR 2006, p. 1).

Generally, the topography within this SEA consists of moderate to steep hillsides with north, south, east and west slope aspects. Ridgelines vary in width from narrow to broad with well-defined drainages in between. One major drainage, Walnut Creek, and a man-made reservoir, Puddingstone Reservoir, are found within this SEA. Elevations range from a low of approximately 560 feet above Mean Sea Level (MSL) in the Walnut Creek drainage to a high of approximately 1,375 feet above MSL at Buzzard Peak.

The biological communities found in this SEA vary according to physical habitat conditions (i.e., slope exposure, soil type and depth, and the availability of water) and the area's history of grazing practices. Elevation plays almost no role in defining habitat types. Many slopes support oak and walnut woodland which often intergrade with prevalent stands of mixed chaparral. Coastal sage 7145/San Dimas MCTA 20-0005 Page 5-21
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scrub is also found on slopes with shallower, drier soils. Drainages are typically vegetated with oak riparian woodlands and forests, with stands of western sycamore and willow woodland (PCR 2006, pp. 1-2).

Wildlife populations within the East San Gabriel Valley SEA are generally expected to reflect lower diversity and abundance. This is due to the influences of surrounding development and location of recreational uses over relatively large areas of the SEA components which tends to compromise habitat quality and value (PCR 2006, p. 4).

A high diversity of birds is documented within this SEA including a population of coastal California gnatcatcher, a federally threatened species. For numerous upland, raptorial, and water associated birds the East San Gabriel Valley SEA provides a mosaic of habitats. Between woodland, shrubland, grassland and wetlands, diverse populations of birds are able to meet nesting, foraging, and migratory requirements (PCR 2006, p. 4).

Mammal populations also reflect the suburban environs imparting this SEA. Small mammals are expected to be uneven in their diversity with more adaptive, introduced European species in greater numbers compared to others species. Medium sized mammal populations are expected to exhibit the same characteristics. Large mammals are largely absent on a resident basis (PCR 2006, p. 4).

Sensitive wildlife species occurring or potentially occurring within the SEA are discussed in Section 4.1.3.
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6.0 6.1

POTENTIAL IMPACTS OF THE PROJECT
Limitations of Survey Data and Analyses
This BRE documents the methods and results of the literature review, field surveys, and resulting impact analyses based on the existing project plans, project description, and other relevant data furnished by the City for the project.

Therefore, this BRE provides a summary of existing conditions, based on the best available data at the time of preparation. The limitations of survey data and analyses are provided below.

1. This BRE incorporated findings from the original EIR documents (Takata Associates, 1991; The Planning Center, 1983; and UltraSystems, 1977) to inform our understanding of the existing biological resources at the time of the initial development of the project area. For example, the locations of the pre-project vegetation communities, protected trees, specialstatus species, wetlands and waters, and wildlife corridors, may not be adequately summarized in the historic documents. Erroneous or inadequate information within the baseline documents may affect findings within this BRE.

2. This BRE documents the initial reconnaissance-level evaluation of biological resources within the project area based on aerial photography, visual estimates of vegetation community boundaries, percent cover of dominant, co-dominant, and sub-dominant species, and photo documentation collected during field surveys.

3. The reconnaissance surveys (UltraSystems, 2022) were performed for the sole purpose of the MCTA 20-0005 project and do not absolve individual landowners from performing project-specific surveys during the engineering design phase.

For parcels supporting protected biological resources, focused surveys are required to meet local, regional, state, and federal regulations to accurately determine the resources within the MCTA-approved areas.

Landowners should be aware that biological resource surveys are generally valid for a duration of up to one to three years, dependent upon the survey focus. Due to the uncertainty and temporal variation of individual parcel design, planning, and development phases, additional reconnaissance surveys may be combined with the initial focused biological surveys to meet the regulatory framework at the time any individual project is proposed.

Surveys would be performed for sensitive habitats, protected plants and wildlife species, wildlife corridors, proposed and designated land management areas, changes to species listing statuses, and jurisdictional areas (waters of the U.S., waters of the State).

Focused survey requirements vary season-to-season as determined by the species protocols.

Seasonally dependent surveys must occur within the required season; therefore, surveys may need to be performed up to one year (sometimes two) prior to expected construction. For example, if surveys must occur during the spring and summer, then the landowner must plan the project accordingly to coordinate mitigation with final grading permits. No focused protocol surveys were performed for this MCTA 20-0005 project.

4. Mitigation measures for avoidance, minimization, and compensatory mitigation are based on conditions at the time of survey. Potential impacts to protected resources will be refined 7145/San Dimas MCTA 20-0005 Page 6-1
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during future focused protocol surveys, when required. Additional mitigation may be necessary and should be employed based on the focused survey findings and regulatory context at the time of the proposed development.

5. Time of year, drought conditions, temperature, and individual surveyor observations may affect survey findings, although the margin for error is expected to be negligible during this reconnaissance-level survey.

6. The drainages displayed in Appendix A, Figures 12-12e Biological Constraints were derived from the NWI dataset, NHD datasets, USGS topographic maps, and field observations during the reconnaissance level surveys. Actual limits of jurisdictional areas require additional habitat assessments and may trigger formal jurisdictional delineations for parcels with wetlands and waters during the planning and design phase. Overlays provided are for informational purposes only until delimited at a future date.

6.2 Impact Types
This section discusses potential significant effects, or impacts, if any, to the environmental baseline and sensitive biological resources that could result from implementation of activities by individual property owners pursuant to the proposed MCTA. Individual properties were numbered 1 through 36 for reference, and potential impacts were determined with regard to each lot (see Table 6.2-1 and Appendix A, Figure 16, Residential Lots and Associated Assessor’s Parcel Numbers [APNs]). With regard to potential or expected impacts and their related mitigation measures, MCTA-related activities will also be referred to as “projects” in Section 6.0, Section 7.0, and Section 8.0.

Table 6.2-1
RESIDENTIAL LOTS AND ASSOCIATED ASSESSOR’S PARCEL NUMBERS (APNs) Lot Number APN Lot Number APN
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
8448-038-031
8448-038-032
8448-038-033
8448-038-034
8448-038-035
8448-038-036
8448-038-037
8448-038-038
8448-038-039
8448-038-040
8448-008-041
8448-038-041
8448-038-042
8448-038-043
8448-038-044
8448-008-042
8448-008-043
8448-008-044
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
8448-038-045
8448-038-046
8448-038-047
8448-008-045
8448-008-046
8448-008-047
8448-008-048
8448-008-055
8448-038-048
8448-038-049
8448-038-050
8448-038-051
8448-038-052
8448-038-053
8448-038-054
8448-038-055
8448-038-056
8448-038-057
7145/San Dimas MCTA 20-0005
Biological Resources Evaluation Report

❖ POTENTIAL IMPACTS OF THE PROJECT ❖
Impact analysis is an important step in the CEQA process. Biological resources may be either “directly” or “indirectly” impacted by a project (defined by CEQA Guidelines § 15358). Direct and indirect impacts may be either “permanent” or “temporary” in nature. These impact categories are defined below.
• Direct impact: Direct impacts are those that may cause an immediate effect on the species or its habitat and occur at the same time and place. Any loss, alteration, disturbance or destruction of biological resources that could result from project-related activities is a direct impact. Examples include vegetation clearing and loss of habitat, encroaching into wetlands, diverting natural surface water flows, and the loss of individual species. • Indirect impact: As a result of project-related activities, biological resources may also be affected in a manner that is not direct. Indirect impacts are caused by the project and are later in time or farther removed in distance, but are still reasonably foreseeable. Indirect or secondary effects may include growth-inducing effects and other effects related to induced changes in the pattern of land use, population density, or growth rate, and related effects on air and water and other natural systems, including ecosystems. Indirect impacts can affect biological resources within a project site, adjacent to a project site, or away from a project site. Examples of indirect impacts include increased human activity, elevated noise, light, and dust levels, decreased water quality, soil compaction, erosion created by the removal of vegetation, and the introduction of invasive plants and unnatural predators. Indirect impacts may be both short term and long-term in their extent. Indirect impacts are also referred to as “edge effects.”
•
•
Permanent impacts (long term): All impacts that result in the long-term or irreversible removal of biological resources are considered permanent. Examples include constructing a building or permanent road on an area containing biological resources. Permanent impacts cannot be mitigated in-place.

Temporary impacts (short term): Impacts considered to have reversible impacts to biological resources can be viewed as temporary. Examples include short-term increased vehicle traffic and noise and the generation of fugitive dust during construction; or removing vegetation and either allowing the natural vegetation to recolonize or actively revegetating the impact area. Temporary impacts can be reversed with the implementation of in-place mitigation measures.

6.3 Thresholds of Significance
This section describes the significance criteria used for determining impacts to biological resources.

As mentioned in the CEQA Guidelines (§ 15064.7[a]), each public agency is encouraged to develop and publish thresholds of significance (significance criteria) that it uses to determine the significance of environmental impacts. A threshold of significance is an identifiable quantitative, qualitative or performance level of a particular environmental impact, non-compliance with which means the impact will normally be determined to be significant by the agency and compliance with which means the impact normally will be determined to be less than significant.

Significance criteria serve as benchmarks for determining if a project would result in a significant adverse environmental impact when evaluated against the baseline. CEQA Guidelines § 15065(a) states that a project may have a “significant impact” on the environment if the project has the potential to:
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•
•
•
•
•
Substantially degrade the quality of the environment,
Substantially reduce the habitat of a fish or wildlife species, Cause a fish or wildlife population to drop below self-sustaining levels, Threaten to eliminate a plant or animal community, or
Substantially reduce the number or restrict the range of an endangered, rare or threatened species.

The Environmental Checklist Form in Appendix G of the CEQA Statute and Guidelines (2014) was reviewed in order to determine the level of significance of project related impacts to biological resources. Under CEQA Guidelines impacts to biological resources are considered potentially “significant” if one or more of the following thresholds are exceeded with construction and operation of the project.

Threshold 1: The project would have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by CDFW and USFWS.

Threshold 2:

Threshold 3:

The project would have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by CDFW and USFWS.

The project would have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means.

Threshold 4: The project would interfere substantially with the movement of any native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites.

Threshold 5:

Threshold 6:

The project would conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance.

The project would conflict with the provisions of an adopted HCP, NCCP, or other approved local, regional, or state HCP.

Significant impacts can be reduced to less than significant levels by incorporating off-setting mitigation measures, including BMPs, avoidance and protection measures, and/or mitigation measures. Less than significant impacts are those in which impacts would potentially occur, but are not expected to be substantial. Impacts to biological resources that are considered less than significant include impacts to biological resources which are reasonably widespread or that exist in a degraded or disturbed state, rendering them less valuable as habitat to support wildlife diversity or special-status species, or impacts that do not meet or exceed the significance thresholds defined above. These less than significant impacts do not require mitigation measures, although conservation measure may be applied to further minimize (or avoid) potential impacts. 7145/San Dimas MCTA 20-0005 Page 6-4
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6.4 Potential Impacts to Vegetation Communities (Land Cover Types)

6.4.1 Direct Impacts
Direct impacts to vegetation communities have immediate consequences, such as the changes that occur when land is cleared for permanent development and vegetation communities are altered or removed during project activities. Direct permanent impacts include all areas within the limits of activities on project sites. Appendix F, Lot-Specific Impacts provides the approximate acreages of each plant community and non-vegetated feature that is anticipated to be directly impacted by project activities. Calculations were based on existing APNs (not including conservation easements) in conjunction with vegetation mapping from field surveys and aerial imagery (see Appendix A, Figure 10, Land Cover Types Impact Areas Overview and Figures 10a through 10e, Land Cover Impacts).
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A species may have other sensitive designations in addition to their federal or state listing. Coast live oak woodland and forest, and California walnut groves found on a project site are considered as locally and regional rare, unique and/or uncommon; and/or regionally rare vegetation communities; that is, communities that are rare or uncommon in a local or regional context and, as such, would meet the CEQA definition of a rare species (CEQA § 15380). The loss of onsite populations of coast live oak woodland and forest and California walnut groves would be potentially significant from a project and cumulative perspective under CEQA.

Development of project sites will result in direct impacts (permanent loss of vegetation) to vegetation communities and habitat. Coast live oak woodland and forest is ranked by the State of California as Vulnerable (state rank of S3), and California walnut groves are considered Vulnerable: Extremely Threatened (S3.1); therefore, these vegetation communities are considered special-status. Direct impacts to coast live oak woodlands and California walnut groves would be considered significant because these habitats are considered special-status. vegetation communities.

6.4.2 Indirect Impacts
Indirect impacts to vegetation communities result in secondary consequences and are likely to be temporary. Indirect impacts could occur to vegetation communities within areas located adjacent to project sites. Examples of indirect, temporary impacts include the effects of fugitive dust and mud splatter created by construction activities. Construction-generated fugitive dust and mud splatter can adversely affect vegetation communities by settling on plant surfaces and inhibiting metabolic processes such as photosynthesis and respiration. Construction-related erosion, runoff, siltation, sedimentation, soil compaction, and alteration of drainage patterns could affect vegetation communities by altering conditions within the BSA such that they become unsuitable for survival of these communities.

Implementation of a project could result in indirect impacts to the coast live oak woodland and forest and California walnut groves communities onsite through alteration of drainage patterns which alter the quantity of available water (via stormwater) to these communities; loss of vertical and horizontal structural complexity; and loss of understory species diversity. Indirect impacts to coast live oak woodland and forest and to California walnut groves meet or exceed significance thresholds and are considered significant.

6.4.3 Mitigation Measures
Implementation of a project pursuant to the proposed MCTA could result in direct and indirect impacts to sensitive vegetation communities (see Table 7.0-1). These impacts to sensitive vegetation communities would be significant; therefore, mitigation measures are required.

Implementation of BIO-1, Vegetation Community Replacement Plan, would require projects to avoid areas of protected sensitive vegetation communities, including California walnut groves, coast live oak woodland and forest, coast prickly pear scrub, California sagebrush-black sage scrub, and/or California buckwheat scrub If these communities cannot be avoided, then, mitigation measure BIO1 would require projects to provide compensatory mitigation for impacted vegetation communities in the form of mitigation bank credits or the payment of in-lieu fees to a mitigation bank (see Section

7.1).
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In addition to protecting sensitive vegetation communities designated by CDFW, mitigation measure BIO-1 may also serve to satisfy the requirements of the City of San Dimas tree protection ordinances (§§ 16.42.020, 16.42.090, 18.162.060, 18.162. 070, and 18.162.100) as mandated by the City’s required tree removal permit for Mature Significant Trees (see Section 6.9 and Section 7.18).

Mitigation measure BIO-2, Project Limits and Designated Areas, will specify the limits of ground and vegetation disturbance or removal, and ensure that project-related work limits are delineated and clearly visible to work crews; work crews will be restricted to working within these limits, as described in Section 7.2.

Mitigation Measure BIO-3, General Vegetation and Wildlife Avoidance, will require that removal of native vegetation shall be avoided or minimized to the maximum extent possible. Temporarily impacted areas shall be returned to pre-existing contours and revegetated with appropriate native species.

6.4.4 Impact Determination
Significance criterion: impacts would be considered significant if the project were to have a substantial adverse effect on any riparian habitat or other sensitive natural community identified in local or regional plans, policies, regulations, or by CDFW or USFWS.

Less than Significant Impact with Mitigation Incorporated.

Direct and indirect impacts to sensitive vegetation communities designated by CDFW would occur as a result of project activities pursuant to the proposed MCTA 20-0005. Implementation of mitigation measures BIO-1, BIO-2, and BIO-3 would minimize or avoid potential impacts to special-status vegetation communities, such as California walnut groves, coast live oak woodland and forest, coast prickly pear scrub, California sagebrush-black sage scrub, and/or California buckwheat scrub within the property of an applicant, requiring compensatory mitigation, delineating work areas, and restoring temporarily impacted areas as described in Section 7.1, Section 7.2, and Section 7.3.

Projects would have substantial adverse effects to sensitive natural communities; (see Appendix F, Lot-Specific Impacts) however, with implementation of mitigation measure BIO-1, BIO-2, and BIO-3, potential impacts would be less than significant.

6.5 Potential Impacts to Special-Status Plants
California black walnut (Juglans californica) is present in the BSA; impacts to this species as a vegetation community are described in Section 6.2. No additional listed or sensitive plants were observed within the BSA during the field surveys. However, the literature review and field surveys concluded that the majority of the plant species in the plant inventory have a moderate potential to occur within the BSA (see Appendix F, Lot-Specific Impacts)due to the presence of suitable habitat, soils, and/or other factors to support them.

6.5.1 Direct Impacts
Direct impacts to special-status plant species may occur as a result of the proposed MCTA due to the moderate potential for most of the special-status plant species in the plant inventory to occur in the BSA. Special-status plant species occurring in areas adjacent to the BSA, including on conservation easements, could be indirectly impacted as a result of the project, in the same manner as direct and 7145/San Dimas MCTA 20-0005 Page 6-7
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indirect impacts to vegetation communities. Without appropriate avoidance and minimization measures for special-status plants, potential significant impacts associated with subsequent construction include loss of habitat, loss or reduction of productivity, and direct mortality. Therefore, mitigation is required.

6.5.2 Indirect Impacts
Indirect impacts that could occur as a result of the project activities include effects of fugitive dust and mud splatter created by construction activities. Construction-generated fugitive dust and mud splatter can adversely affect vegetation by settling on plant surfaces and inhibiting metabolic processes such as photosynthesis and respiration. Construction-related erosion, runoff, siltation, sedimentation, soil compaction, and alteration of drainage patterns could affect vegetation communities by altering conditions within the BSA such that they become unsuitable for survival of these plants.

Implementation of a project could result in indirect impacts to plant species that were determined to have a moderate potential to occur on the project site through alteration of drainage patterns which alter the quantity of available water (via stormwater) to these plant species.

6.5.3 Mitigation Measures
Implementation of projects pursuant to the proposed MCTA may result in direct and indirect impacts to special-status plants (see Appendix F, Lot-Specific Impacts); therefore, mitigation measures are required (see Table 7.0-1).

Mitigation measure BIO-4, Focused Botanical Surveys, will require a qualified biologist to conduct focused botanical surveys for special-status plants that are likely to occur based on habitat, soils, elevation, climate, and other conditions, as described in Section 7.4. The focused plant surveys will be conducted in accordance with the Protocols for Surveying and Evaluating Impacts to Special Status Native Plant Populations and Sensitive Natural Communities (CNPS, 2018) and the Guidelines for Conducting and Reporting Botanical Inventories for Federally Listed, Proposed, and Candidate Plants (USFWS, 2000), and conducted in the field at appropriate times of the year to coincide with the growing season and different blooming periods and when optimum conditions for identification (generally blooms, fruits, and leaves) are present. Biologists will pay special attention to those habitat areas that appear to provide suitable habitat for special-status species.

Following completion of the focused botanical surveys, a focused botanical survey report will be prepared in accordance with agency guidelines. The report will: 1) summarize information regarding the habitat of the survey area and the habitat’s suitability for special-status plants; 2) assess the potential presence of special-status plants onsite; 3) analyze the potential impacts to special-status plants from project development; and 4) recommend, as appropriate, BMPs, avoidance and protection measures, and mitigation measures to reduce or avoid potential impacts to special-status plants (see Section 7.4).

Mitigation measures BIO-1, BIO-2, BIO-3, and BIO-4 will also minimize or avoid impacts to specialstatus plant species, as described in Section 7.1, Section 7.2, Section 7.3, and 7.4. 7145/San Dimas MCTA 20-0005 Page 6-8
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6.5.4 Impact Determination
Significance criterion: impacts would be considered significant if the project were to have a substantial adverse effect, either directly or through habitat modifications, to any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by CDFW or USFWS.

Less than Significant Impact with Mitigation Incorporated The BSA contains at least one sensitive plant species, California black walnut. Conditions on the project site may support additional special-status plant species; therefore, the project is anticipated to have direct impacts to listed or sensitive plants. The project is also anticipated to have indirect impacts to special-status plant species through loss of habitat, loss or reduction of productivity, and other future habitat modifications. Implementation of mitigation measures BIO-1, BIO-2, BIO-3, and BIO-4 would minimize or avoid significant impacts to special-status plant species to less than significant.

6.6 Potential Impacts to Special-Status Wildlife
One listed wildlife species, monarch butterfly, was observed within the BSA during the general biological surveys. However, the BSA has the potential to support additional listed wildlife species, including (but not limited to) coastal California gnatcatcher, least Bell’s vireo, southwestern willow flycatcher, Swainson’s hawk, and arroyo toad.

Two sensitive wildlife species, Nuttall’s woodpecker and Cooper’s hawk, were observed within the BSA during the biological surveys. Habitat in the BSA may support additional sensitive species, including (but not limited to) least Bell’s vireo (LBV), southwestern willow flycatcher (SWFL), California gnatcatcher (CAGN), cactus wren, golden eagle, red-diamond rattlesnake, southern California legless lizard, burrowing owl, California spotted owl, long-eared owl, western yellow bat, big free-tailed bat, and mountain lion.

6.6.1 Direct Impacts
Potential direct impacts to common and special-status wildlife occupying the BSA could occur from project-related mortality, injury, or harassment of individuals as a result of permanent development of project sites, and from the removal and direct loss of breeding, foraging, and/or sheltering habitat.

Direct permanent impacts include all areas within the limits of grading in project sites. • Ground-disturbing and habitat-altering activities could result in significant impacts to common and special-status ground-dwelling animals or nesting birds. Examples include grading, clearing, disking, grubbing, excavation, trenching, paving, mowing, heavy equipment compacting, driving over habitat to access the construction work sites, tree removal and other vegetation management activities, and use of herbicides and pesticides. • Direct impacts to less mobile fossorial (burrowing) animals that are underground during most of the day or year (e.g., small mammals or lizards) or have a life stage in the soil or on plants could occur from encounters with vehicles or heavy equipment as many of these animals do not run away from construction vehicles/equipment and would most likely be killed. These species could be expected to experience direct mortality, injury, harassment, and displacement from increased human activity and vehicle/equipment travel if they are 7145/San Dimas MCTA 20-0005 Page 6-9
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present onsite within the project footprint at the time of construction. Individual losses are more likely, especially during clearing activities. The loss of these animals could also affect other common and special-status wildlife that depend on them as prey. •
•
The BSA also supports large trees and other physical features that could potentially provide foraging, nesting, and cover habitat to support a diverse assortment of special-status bird species (year-round residents, seasonal residents, and migrants). It unlawful to take specialstatus birds, and their nests, eggs, and young. Activities which are most likely to result in take of migratory birds during the breeding bird season when eggs or young are likely to be present include, but are not limited to clearing or grubbing of bird nesting habitat, tree removal, or structure demolition. The project has a potential to directly take individual breeding birds, their nests, young, or eggs.

Large trees and buildings in the BSA also provide suitable foraging and nesting habitat for special-status bat species. Clearing or grubbing of bat nesting habitat, including tree removal, is likely to impact special-status bats.

6.6.2 Indirect Impacts
Indirect impacts could occur within areas located adjacent to project sites, including within conservation easements. Indirect impacts are more subtle than direct impacts. Indirect impacts may either be short-term (related to construction) or long-term, affecting populations and habitat quality over an extended period of time long after construction activities have been completed. Examples of indirect impacts include the following:
•
•
The permanent loss of habitat and physical features that would occur from clearing and grading could indirectly impact wildlife species through the loss of foraging, roosting, denning, and/or breeding habitat available. Habitat loss could displace species from existing territories and reduce the home range of those species and impact nearby populations of similar species. Displaced species would then have to compete for and/or find new territories and compete for food with resident species. This could result in delayed nest building, fewer nest attempts, reduced clutch size, and an overall reduction in reproductive output.

Ground-disturbing and construction activities could result in temporary increased ambient noise levels, vibration, lighting and/or human intrusion in and near habitat. This could disrupt natural foraging, roosting, denning, and/or breeding behavior of wildlife species.

Wildlife species stressed by these factors may disperse from habitat in a project site and project vicinity. In addition, increased noise levels could interfere with territorial and mating vocalizations, thereby interfering with wildlife reproduction. •
•
Ground-disturbing and construction activities could increase fugitive dust, pollution, runoff, siltation, sedimentation, and erosion. This could result in degradation and alteration of habitat and soils. Consequently, the ability of onsite and adjacent vegetation communities to support wildlife populations may decrease.

Use of artificial lighting could disrupt natural foraging and breeding behaviors and/or alter wildlife movement patterns and migratory routes of nocturnally active species such as mammals and snakes. Most animals would attempt to avoid moving in or near the lighting; however, some animals such as insects, migratory birds, and bats might be attracted to the lighting, increasing construction-related mortalities. Artificial lighting could also indirectly 7145/San Dimas MCTA 20-0005 Page 6-10
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affect wildlife by increasing detection by predators. The new development could also provide an increase in artificial lighting and glare which could disrupt nocturnal wildlife behavior. • An increase and continuation of human activities within and adjacent to a project site could lead to mortality, injury, or harassment of wildlife species by providing anthropogenic food sources in the form of trash and litter or water which attracts predators such as the common raven (Corvus corax), northern raccoon (Procyon lotor), Virginia opossum (Didelphis virginiana), and coyote.

6.6.3 Mitigation Measures
Special-status wildlife species were observed during the surveys, and the BSA contains habitat that could support additional special-status species. A negative survey finding does not preclude the occupation by special-status species of any location within the BSA. Mitigation measures will be implemented to minimize and avoid impacts to special-status wildlife species (see Table 7.0-1).

Prior to project approval, applicants will implement the following mitigation measures: BIO-2 and BIO-3, described in Sections 7.2 and 7.3; BIO-5, Habitat Assessment for Least Bell’s Vireo and Southwestern Willow Flycatcher and BIO-6, Focused Coastal California Gnatcatcher Surveys, to determine the presence and location of these species if they are occupying a project site. The applicant’s qualified (permitted) biologist will conduct these surveys in accordance with the methodology set forth in Section 7.5 and Section 7.6 (or in accordance with current protocol or guidelines) and submit survey reports to the USFWS and to CDFW. If special-status bird species are present on a project site, the qualified biologist will consult with USFWS and CDFW to determine appropriate avoidance and mitigation measures to minimize impacts to these species.

Applicants will also implement mitigation measure BIO-7, Focused Cactus Wren Surveys prior to grading plan approval, to assess the presence of and use by cactus wren, as described in Section 7.7.

If avoidance of occupied habitat is not possible, then payment into a mitigation bank or onsite restoration will occur (See BIO-1).

Because the BSA supports hunting and foraging habitat for mountain lions, applicants will implement mitigation measure BIO-8, Preconstruction Mountain Lion Avoidance (Natal Dens) prior to grading plan approval, to survey areas that may provide habitat for mountain lions to determine presence/absence and potential for natal dens and avoidance of impacts to mountain lions as described in Section 7.8.

Implementation of mitigation measure BIO-9, Preconstruction Wildlife Surveys, will ensure that sensitive wildlife species are cleared from a project site to the greatest practicable extent, thus minimizing direct impacts to sensitive wildlife species (see Section 7.9); BIO-10, 14-Day Preconstruction Burrowing Owl Surveys, will be implemented no more than 14 days prior to initiation of ground-disturbing activities will minimize or avoid potential impacts to burrowing owl, as detailed in Section 7.10; mitigation measure BIO-11, Preconstruction Bat Surveys, requires that a bat survey be conducted by a qualified biologist within 30 days prior to vegetation removal to minimize or avoid impacts to bats and bat maternity roosts (see Section 7.11). Mitigation Measure BIO-12, Preconstruction Breeding Bird Surveys, requires that a qualified biologist conduct preconstruction surveys for breeding birds (including hawks) and their nests, as described in Section 7.12.

Mitigation measure BIO-13, Worker Environmental Awareness Program, requires all contractors, subcontractors, etc., working on a project site to attend a the WEAP prior to performing any work on 7145/San Dimas MCTA 20-0005 Page 6-11
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project site, as described in Section 7.13. The WEAP is intended to inform workers of the specialstatus plant and wildlife species known to occur on a project site, what species may occur, and steps to take if special-status species are observed by workers. Mitigation measure BIO-14, Biological Monitor, requires the presence of a qualified biological monitor on a project site, as described in Section 7.14. The biological monitor will ensure the implementation of mitigation measures Bio-15, Wildlife Entrapment Avoidance; and BIO-16, Construction Best Management Practices. These mitigation measures are intended to minimize or avoid direct and indirect impacts to wildlife through avoiding inadvertent entrapment of wildlife on a project site, and the maintenance of a clean project site to avoid attracting wildlife by littering and degradation of water quality, and accidental release of hazardous materials as described in Sections 7.15 and 7.16.

The biological monitor will also ensure the implementation of mitigation measures BIO-2 and BIO- 3.

6.6.4 Impact Determination
Significance criterion: impacts would be considered significant if the project were to have a substantial adverse effect, either directly or through habitat modifications, on any species identified as a candidate, sensitive, or special status species in local or regional plans, policies, or regulations, or by CDFW or USFWS.

Less than Significant Impact with Mitigation Incorporated The BSA contains at least three special-status wildlife species: monarch butterfly, Nuttall’s woodpecker and Cooper’s hawk. Conditions within the BSA may support additional special-status wildlife species; therefore, the project is anticipated to have direct impacts to listed or sensitive wildlife. The project is also anticipated to have indirect impacts to special-status wildlife species through increased ambient noise, human activities, lighting, etc. (see Section 6.4.2). Implementation of mitigation measures BIO-2, through BIO-16 would minimize or avoid significant direct and indirect impacts to special-status wildlife species to less than significant (see Table 7.0-1).

6.7 Potential Impacts to Breeding Birds
The BSA supports large trees, shrubs, cacti, and other physical features that could provide foraging, nesting, and cover habitat to support a diverse assortment of bird species (year-round residents, seasonal residents, and migrants). Many bird species that could potentially breed within the BSA are protected by the MBTA and by Fish and Game Code § 3503, § 3503.5, and § 3513. The statutes make it unlawful to take native breeding birds, and their nests, eggs, and young. Project activities which are most likely to result in take of migratory birds during the breeding bird season when eggs or young are likely to be present include, but are not limited to, clearing or grubbing of bird nesting habitat, tree removal, grading, or structure construction. Projects have the potential to directly and indirectly impact individual breeding birds, their nests, young, or eggs.

6.7.1 Direct Impacts
Activities which are most likely to result in take of migratory birds during the breeding bird season when eggs or young are likely to be present include, but are not limited to clearing or grubbing of bird nesting habitat, structure demolition, tree removal, and vegetation trimming or clearing. The project has a potential to directly impact (take) individual breeding birds, their nests, young, or eggs; therefore, mitigation is required.
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6.7.2 Indirect Impacts
Indirect impacts to breeding birds could occur from increased noise, vibration, lighting dust, and human activity during project implementation, which could adversely affect the breeding behavior of some birds and lead to the loss (take) of eggs and chicks, or nest abandonment. The project has a low potential to indirectly impact individual breeding birds, their nests, young, or eggs; therefore, mitigation is required.

6.7.3 Mitigation Measures
Prior to the onset of project-related activities, a qualified biologist will conduct preconstruction breeding bird surveys as described in mitigation measure BIO-12 (see Table 7.0-1). Implementation of mitigation measure BIO-12 will minimize or avoid potential impacts to breed birds, their nests, young, or eggs.

6.7.4 Impact Determination
Less than Significant Impact with Mitigation Incorporated Project activities are expected to result in impacts to bird species that breed and nest on or adjacent to a project site. Direct and indirect impacts to breeding birds, their nests, young, or eggs would potentially occur as a result of the project. With the reduction of suitable breeding and nesting habitat and other project-related impacts; potential impacts to breeding birds, their nests, young, or eggs would potentially be significant. Implementing the recommended mitigation measure BIO-12, as described in Section 7.12, will minimize or avoid significant impacts to breeding birds, their nests, young, or eggs to less than significant levels.

6.8 Potential Impacts to Waters of the U.S. and State, Including Wetlands This section discusses potential significant effects or impacts (if any), to waters of the U.S. and State, including wetlands and other waters, water quality, water quantity, and aquatic/riparian habitat that could result from project development. Biological resources may be either directly or indirectly impacted by a project (defined by CEQA Guidelines § 15358). Direct and indirect impacts may be either permanent or temporary in nature. These impact categories are defined below. • Direct impact: Direct impacts caused by the project are impacts that may cause an immediate effect to jurisdictional wetlands and other waters, water quality, water quantity, and aquatic/riparian habitat and occur at the same time and place. Any loss, alteration, disturbance or destruction of biological resources that would result from project-related activities is a direct impact. Examples include vegetation clearing, encroaching into wetlands, diverting natural surface water flows, and the loss of habitat. Direct impacts are long-term. • Indirect impact: As a result of project-related activities, jurisdictional wetlands and other waters, water quality, water quantity, and aquatic/riparian habitat may also be affected in a manner that is not direct. Indirect impacts caused by the project occur later in time or farther removed in distance, but are still reasonably foreseeable. Indirect or secondary effects may include growth-inducing effects and other effects related to induced changes in the pattern of land use, population density, or growth rate, and related effects on air and water and other natural systems, including aquatic ecosystems. Examples of indirect impacts include increased human activity, elevated dust levels, decreased water quality, soil compaction, 7145/San Dimas MCTA 20-0005 Page 6-13
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erosion created by the removal of vegetation, and the introduction of invasive plants. These indirect impacts may be both short term and long-term in their extent. •
•
Permanent impacts: All impacts that result in the long-term or irreversible removal of jurisdictional resources are considered permanent. Examples include constructing a building or permanent road on an area containing jurisdictional areas.

Temporary impacts: Impacts considered to have reversible effects on jurisdictional resources can be viewed as temporary. Examples include short-term increased vehicle traffic and the generation of fugitive dust during construction; or removing vegetation and either allowing the natural vegetation to recolonize or actively revegetating the impact area.

All impacts (permanent and temporary) to jurisdictional waters are considered significant due to regulation by those agencies. Impacts to waters of the U.S. and State (including wetlands and other waters, water quality, water quantity, and aquatic/riparian habitat) are regulated by USACE, RWQCB, and CDFW, and permits would be required.

6.8.1 Direct Impacts
Direct impacts to waters of the U.S. and State (water features including, but not limited to, wetlands, ephemeral and intermittent streams, water quality, water quantity and availability, and aquatic/riparian habitat) have immediate consequences, such as the changes that occur when land is cleared and graded for permanent development and waters of the U.S. and State are altered or filled in during project construction activities. Examples of potential direct impacts which could destroy or significantly impact water features include any ground-disturbing activities, such as grading, clearing, disking, grubbing, excavation, trenching, paving, or compacting that would permanently remove or alter water features. Other examples of potential direct impacts to water features include filling, stockpiling, channelization, bank stabilization, road crossings, or other permanent drainage modification. Such impacts are considered to be significant; therefore, mitigation is required.

6.8.2 Indirect Impacts
Indirect impacts to water features, water quality, water quantity and availability, and aquatic/riparian habitat result in secondary consequences and are likely to be temporary during construction, but they could also be long-term as a result of the introduction of impervious surfaces and permanent development. Indirect impacts from project implementation could occur within areas adjacent to a project site, including conservation easements, and eventually within downstream areas. Construction-related pollution including fugitive dust, erosion, increased runoff, siltation, sedimentation, and soil compaction could adversely affect water features, water quality, water quantity and availability, and aquatic/riparian habitat. Alteration of drainage patterns could affect downstream water features, plants, and habitat by redirecting flow and runoff to new areas.

The BSA contains waters of the U.S. and State; water which drains from the site into gutters or storm drains ultimately discharge into Walnut Creek. Project implementation would have significant direct and indirect impacts to water features (including, but not limited to, wetlands, ephemeral and intermittent streams, water quality, water quantity and availability, and aquatic/riparian habitat), within the BSA and in receiving waters, such as Walnut Creek. Therefore, mitigation is required (see Table 7.0-1).
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6.8.3 Mitigation Measures
Prior to project approval, the applicant will implement mitigation measure BIO-17, Jurisdictional Delineation Survey and Report. Applicants of grading permits pursuant to the proposed MCTA would be required to contract with an authorized biologist to conduct a jurisdictional delineation assessment on their property to determine the presence and extent of potential waters of the U.S. or State (including but not limited to wetlands, ephemeral and intermittent drainages, and associated vegetation communities) that would be subject to the jurisdictional authority of the United States Army Corps of Engineers (USACE), the California State Water Resources Control Board (SWRCB, as represented by the Los Angeles RWQCB), and CDFW. If the assessment determines that the subject property may contain waters of the U.S. or State, a jurisdictional delineation survey is required.

If waters of the U.S. and/or State are present on project site, this mitigation measure would require a survey and delineation of potential waters of the U.S. and State on a project site and adjacent conservation easement on the property of the applicant; following the survey, the qualified biologist will prepare a jurisdictional delineation report as detailed in Section 7.17. The report will include a list of permits/authorizations/agreements required by the applicant from each agency. The report will also recommend impact avoidance and/or minimization measures and best management practices, and compensatory mitigation, as applicable.

6.8.4 Impact Determination
Less than Significant with Mitigation Incorporated
Significance threshold: impacts would be considered significant if the project would have a substantial adverse effect on state or federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through direct removal, filling, hydrological interruption, or other means.

The literature search and field surveys determined that the BSA contains waters of the U.S. and State, including riverine and riparian areas. The City of San Dimas, pursuant to Section VI(D)(8) of the MS4 permit, will require the implementation of an effective combination of erosion and sediment control BMPs to prevent erosion and sediment loss, and impacts to water quality including those resulting from the discharge of construction wastes within the planning area and to receiving waters (e.g., Walnut Creek).

With regard to the significance criterion for jurisdictional areas, the project is anticipated to result in substantial adverse effect to waters under the jurisdiction of USACE, CDFW, RWQCB; however, implementation of mitigation measure BIO-17, as described in Section 7.17, will minimize or avoid impacts to waters of the U.S. and State (including aquatic and riparian habitat), and impacts would be less than significant.

6.9 Potential Impacts to Critical Habitat
USFWS-designated critical habitat for coastal California gnatcatcher (Polioptila californica californica) is within two miles of the project stie, including Frank G. Bonelli Regional Park and the San Jose Hills. However, the BSA is not located within or adjacent to this critical habitat, the nearest of which is approximately 0.65 mile south of the BSA, in the San Jose Hills south of I- 10. 7145/San Dimas MCTA 20-0005 Page 6-15
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6.9.1 Direct and Indirect Impacts
No direct or indirect impacts to critical habitat are anticipated as a result of construction of the project.

6.9.2 Mitigation Measures
Critical habitat is not anticipated to be significantly impacted; therefore, no mitigation measures are required.

6.9.3 Impact Determination
No Impact
Significance criterion: impacts would be considered significant if the project were to have a substantial adverse effect on any critical habitat identified by USFWS.

The literature review and field surveys determined that the BSA does not contain critical habitat; therefore, the project is not anticipated to have direct or indirect impacts to critical habitat. In regard to the significance criterion, the project is anticipated to have no impact to critical habitat; therefore, no mitigation is proposed.

6.10 Potential Impacts to Fish or Wildlife Movement or Native Wildlife Nursery Sites A review of aerial imagery and observations recorded during the biological surveys, including the coyote observed on the BSA, and examination of aerial imagery indicate that all lots in the BSA acts as a hunting, foraging, and movement area, and the BSA and surrounding areas are suitable wildlife movement corridors. Additionally, the BSA supports habitat for bat maternity roosts and hibernacula

6.10.1 Direct Impacts
The BSA contributes to regional wildlife movement east to west and south to north within the area, and supports the passage of large and small mammals as well as migrating birds and sensitive species foraging in the area. In addition, habitat in the BSA supports the natural areas and the open space in the vicinity. Direct impacts to wildlife corridors and crossings occur as a result of loss of cover and hunting or foraging habitat for wildlife species utilizing these areas.

Direct impacts to bat maternity roosts and hibernacula occurs when trees and vegetation are cleared, removing suitable habitat for maternity roosts and hibernation sites.

6.10.2 Indirect Impacts
Indirect impacts to wildlife corridors occur when vegetation removal results in fragmented patches of open space or isolated “islands” of wildlife habitat. Because wildlife corridors facilitate movement of individuals through dispersal, seasonal migration, and movement for foraging, breeding, and cover, corridors allow for physical and genetic exchange between isolated wildlife populations and are critical for the maintenance of ecological processes, including allowing for the movement of animals and the continuation of viable populations and higher species diversity. 7145/San Dimas MCTA 20-0005 Page 6-16
Biological Resources Evaluation Report Page 1335 – 2053 December 2022 ❖ POTENTIAL IMPACTS OF THE PROJECT ❖
Indirect impacts to bat maternity roosts and hibernacula occur when removal of vegetation reduces available habitat for insects, reptiles, and small mammal species which in turn reduces the available area for hunting and foraging.

Increased lighting and level of human activity would result in indirect impacts to both wildlife corridors and bat maternity roost and hibernacula.

Wildlife corridors and native wildlife nursery sites are anticipated to be impacted as a result of project activities. Because Small Natural Areas occur on all sides of the planning area and a Natural Landscape Block (i.e., Frank G. Bonelli Regional Park) is located approximately 1.5 miles east of the planning area, the loss of open space and vegetation within the planning area, combined with the loss of habitat for bat maternity roosts and hibernacula, would be a potentially significant impact; therefore, mitigation is required.

6.10.3 Mitigation Measures
To minimize or avoid impacts to wildlife corridors, bat maternity roosts, and hibernacula, mitigation measures BIO-1, BIO-2, BIO-3, BIO-11, and BIO-16 will be implemented (see Table 7.0-1) as described in Section 7.0 to minimize or avoid removal of native vegetation and other habitat.

Implementation of these mitigation measures would preserve valuable resources essential to wildlife corridors, bat maternity roosts, and hibernacula, and preserve native vegetation and habitat which supports hunting and foraging areas. Implementation of mitigation measure BIO-11 will identify existing maternity roost or hibernacula minimize or avoid impacts to them by safely evicting nonbreeding bats, establishing avoidance buffers, or replacing roosts at a suitable location.

6.10.4 Impact Determination
Significance criterion: impacts would be considered significant if the project were to interfere substantially with the movement of native resident or migratory fish or wildlife species or with established native resident or migratory wildlife corridors, or impede the use of native wildlife nursery sites.

Less Than Significant Impact with Mitigation Incorporated The literature review and field surveys determined that the planning area functions as a wildlife corridor and potentially contains native wildlife nursery sites (e.g., bat maternity roosts).

Implementation of mitigation measures BIO-1, BIO-2, BIO-3, BIO-11, and BIO-16, impacts to wildlife corridors and native wildlife nursery sites would be less than significant.

6.11 Potential Impacts to Local Policies Protecting Biological Resources The BSA contains numerous trees that qualify for protection under the San Dimas Municipal Code Chapter 18.182 Tree Preservation.

The ordinance designates mature significant tree as follows:
” any tree within the city of an oak genus which measures eight inches or more in trunk diameter, and/or any other species of tree that measures ten inches or more in trunk diameter, and/or any multi-trunk tree(s) having a total circumference of thirty-eight inches or more; the multitrunk tree shall include at least one trunk with a diameter of a minimum of four inches”. 7145/San Dimas MCTA 20-0005 Page 6-17
Biological Resources Evaluation Report Page 1336 – 2053 December 2022 ❖ POTENTIAL IMPACTS OF THE PROJECT ❖
Future removal or relocation of mature significant trees must be approved by the director of development services or the development plan review board. This approval is subject to conditions as deemed necessary to implement the provisions of the ordinance. No protected tree shall be removed or otherwise destroyed unless a tree removal permit has been approved by the director.

6.11.1 Direct Impacts
The removal of the existing protected trees on a project site would cause direct impacts as a result of construction of the project. Other direct impacts to trees scheduled for preservation is that grounddisturbing construction activities such as grading, disking, excavating, soil compaction, and operation of heavy equipment could damage lateral tree roots that extend beyond the tree protection zone. To minimize direct impacts to the root system of protected trees, fencing will be placed around the perimeter of the trees, thus protecting the majority of the trees’ feeder roots.

6.11.2 Indirect Impacts
Potential indirect impacts to mature significant trees in a project site include increased dust levels.

Dust generated during project activities may have indirect impacts to the preservation of protected trees. Dust can coat the leaves throughout a tree’s canopy and reduce the tree’s ability to conduct photosynthetic processes necessary for growth and survival.

As detailed in Section 3.3.2, the City of San Dimas requires a Tree Removal Permit before mature significant trees may be removed. The City defines “remove” as any act which will cause a mature significant tree to die, including but not limited to acts which inflict damage upon the root system or other parts of the tree by fire, cutting, application of toxic substances, operation of equipment or machinery, or by changing the natural grade of land by excavation or filling the drip line area around the trunk. Project activities have the potential to impact mature significant trees that have not been approved for removal per the Tree Removal Permit.

6.11.3 Mitigation Measures
To minimize impacts to the root system or other parts of protected trees, mitigation measure BIO18 will be implemented (see Table 7.0-1); BIO-18, Mature Significant Tree Protection Measures, requires mitigation for trees permitted by the City for removal, as detailed in Section 7.18.

Mitigation measure BIO-1 will also be implemented as described in Section 6.2 and Section 7.1.

6.11.4 Impact Determination
Significance criterion: impacts would be considered significant if the project were to conflict with any local policies or ordinances protecting biological resources, such as a tree preservation policy or ordinance.

Less than Significant Impact with Mitigation Incorporated Potential project impacts to protected trees that are not covered by the City of San Dimas Tree Removal Permit would be impacted during project-related activities. Implementing mitigation measures BIO-1 and BIO-18 will minimize the significant impacts to protected and mature significant trees to a less than significant level.
7145/San Dimas MCTA 20-0005 Page 6-18
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6.12 Potential Impacts to HCPs or NCCPs
The planning area is not located within an HCP or NCP boundary. Components of the East San Gabriel Significant Ecological Area are within approximately 0.5-mile of the planning area; however, the planning area does not intersect with nor is it immediately adjacent to these SEA components. No impact would occur.

6.12.1 Mitigation Measures
Impacts to HCPs, NCCPs, or the East San Gabriel SEA would not occur. Mitigation is not required.

6.12.2 Impact Determination
Significance threshold: impacts would be considered significant if the project would conflict with the provisions of an adopted HCP, NCCP, or other approved local, regional, or state HCP.

No Impact
The project would not conflict with the provisions of an adopted HCP, NCCP, or other approved local, regional, or state HCP including the East San Gabriel SEA. 7145/San Dimas MCTA 20-0005 Page 6-19
Biological Resources Evaluation Report Page 1338 – 2053 December 2022 ❖ MITIGATION MEASURES ❖

7.0 MITIGATION MEASURES
CEQA states that “mitigation measures are not required for effects which are not found to be significant” (§15126.4[a]([3])Therefore, no mitigation measures are proposed for impacts to biological resources that are less than significant. However; if significant impacts to biological resources are identified, then possible mitigation measures are recommended to avoid, eliminate or reduce the level of the impacts to less than significant levels. There are several forms of mitigation.

Under CEQA (§ 15370), “mitigation” includes all of the following:
•
•
“Avoiding” the impact altogether by not taking a certain action or parts of an action. “Minimizing” impacts by limiting the degree or magnitude of the action and its implementation.
•
•
“Rectifying” the impact by repairing, rehabilitating, or restoring the impacted environment. “Reducing” or eliminating the impact over time by preservation and maintenance operations during the life of the action.
• “Compensating” for the impact by replacing or providing substitute resources or environments.

The following mitigation measures are intended to minimize or avoid direct or indirect impacts to biological resources to less than significant levels and to comply with all applicable environmental laws, ordinances, policies, regulations, and management plans. Table 7.0-1 presents the mitigation measures that would be applicable to each lot (property) and project owner (i.e., property owner) for activities pursuant to the proposed MCTA. Residential lots and associate APNs are presented in Table 6.2-1 and shown in Appendix A, Figure 16, Residential Lots and Associated Assessor’s Parcel Numbers.

Disclaimer Regarding MCTA Biological Analyses: The avoidance, minimization, and compensatory mitigation measures provided in Section 7.0 Mitigation Measures are intended to comprehensively address the potential impacts to biological resources within SP-11 as an entire ecological unit, and per individual parcel, based on preliminary reconnaissance surveys for the purposes of the MCTA. The MCTA considered conceptual impact areas at the time of review and were not applicable to project-specific impacts, which are unknown at this time.

The biological constraints that may require avoidance, minimization, and compensatory mitigation include sensitive vegetation communities, special-status species (e.g., plants and wildlife), seasonal species protections (e.g., reproduction and overwintering), jurisdictional wetlands and waters, riparian drainage segments, protected trees, wildlife corridors, and land management designations.

A qualified biologist will perform focused biological surveys for construction approvals, based on 65 percent to 95 percent complete professional engineering drawings at the time of proposed development of each individual parcel. The biologist conducting the focused surveys will incorporate the focused survey results and those of the reconnaissance surveys (UltraSystems, 2022) to assign the relevant mitigation for each individual project. The City will require the mitigation in the construction specifications prior to issuance of grading plans approved for each individual land owner (or project applicant). The mitigation measures contained herein are legally binding and are required if impacts to protected biological resources occur as a result of the project. 7145/San Dimas MCTA 20-0005 Page 7-1
Biological Resources Evaluation Report Page 1339 – 2053 December 2022 ❖ MITIGATION MEASURES ❖
Table 7.0-1

RESIDENTIAL LOTS AND ASSOCIATED MITIGATION MEASURES
Jurisdictiona
l Delineation
Habitat
Assessment
or asGeneral
Vegetatio Focused
n and
Wildlife
Avoidanc
e
Focuse
d
Precon
Wildlif
14-Day
Precon
Pre- Worker
Environment
al Awareness
Program
Vegetation
Community Limits and
Replacemen Designate
Project Habitat Focuse Pre- Pre-con Wildlife
Biologica Entrapmen
Constructio
n Best
Managemen
t Practices
Significant
Tree
Protection
Measures
Constructio
n Mountain
Lion
Botanica Assessmen d CAGN Cactus con Bat Breedin
Lot
No.
l t for LBV & Survey Wren
Survey
s
e BUOW Survey g Bird
Survey
l Monitor t
t Plan
BIO-1
d Areas Surveys SWFL s Survey Survey s Avoidance Avoidance (WEAP) needed Survey
BIO-17
s s
BIO-2
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
BIO-3
X
P
BIO-4 BIO-5 BIO-6 BIO-7 BIO-8 BIO-9 BIO-10 BIO-11 BIO-12 BIO-13 BIO-14 BIO-15: BIO-16 BIO-18 1 2
3 4
5 6
7 8
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
P
X
X
P
X
P
P
P
X P
X
X
P
X
X
P
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
P
P
X
X
X
X
X
X
X
P
X
X
X
X
X
X
X
X
X
X
X
X
P
P
X
X
X
P
P
P
X
X
X
P
P
X
P X
X
X
P
P
P
X
P
P
P
P
X
X
X
X
X
X
X
P
X
X
X
P
P
P
X
X
X
P
P
P
X
P
P
P
P
P
P
P
P
X
X
X
X
X
X
X
P
X
X
X
P
P
P
X
X
X
P
P
P
X
P
P
P
P
P
P
P
P
P
P
X
X
X
X
P
X
X
X
X
X
P
P
P
X
X
P
P
P
X
P
P
P
P
P
P
P
P
P
P
X
X
X
X
P
X
X
X
X
X
P
P
P
X
X
P
P
X
X
P
P
P
X
P
P
P
P
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
P
P
P
P
P
P
P
X
X
X
X
P
P
P
P
P
P
X
X
X
X
X
X
X
X
X
X
X
X
X
P
X
X
X
P
X
X
X
P
P
P
P
X
P
P
P
X
X
X
X
X
X
X
X
X
X
X
X
P
P
P
X
X
P
P
P
X
P
P
X
X
P
P
P
P
X
X
X
X
X
X
P
P
X
X
X
X
P
P
X
X
P
P
P
P
X
P
X
X
X
X
X
X
X
X
X
X
X
X
X
P
P
X
X
X
X
P
P
X
X
P
P
P
P
X
P
X
P
P
P
P
P
P
P
P
X
X
P
P
P
X
X
X
X
P
X
P
X
P
P
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
35 36
P
P
P
X
X
X
X
X
P
P
P
X
X
P
P
P
P
P P
P
Note: X = Mitigation required for any area of the parcel, P = Mitigation required if impacts extend into the remaining parcel (extension to Conservation Easement boundary). 7145/San Dimas MCTA 20-0005
Biological Resources Evaluation Report

❖ MITIGATION MEASURES ❖

7.1 BIO-1: Vegetation Community Replacement Plan
Sensitive natural communities (vegetation communities) are communities that have a limited distribution and are often vulnerable to the environmental effects of projects. These communities may or may not contain special-status species or their habitats. For purposes of this BRE, sensitive natural communities are considered to include vegetation communities listed in the CNDDB and communities (alliances and/or associations) listed in the CDFW Natural Communities List with a rarity rank of S1 (critically imperiled), S2 (imperiled), or S3 (vulnerable) (CDFW, 2022). Replacement and maintenance of natural resources with ecological viability is required in the FEIR (The Planning Center, 1983), General Plan (Takata Associates, 1991), and as per CEQA§ 21081.6 Findings or Negative Declarations; Reporting or Monitoring Project Changes; Effect on Environment; Conditions (CEQA § 21081.6).

As the project contains multiple areas of protected sensitive vegetation communities, including California walnut groves, coast live oak woodland and forest, coast prickly pear scrub, California sagebrush-black sage scrub, and/or California buckwheat scrub (if occupied by CAGN or other listed species), and if impacts cannot be avoided, then the following mitigation would be implemented.

Delimit Sensitive Vegetation Communities: A qualified biologist will survey the project site and field verify the mapped locations and extent of sensitive vegetation communities, per the 2022 surveys (Appendix A, BRE report; UltraSystems, 2022) If discrepancies are observed, then corrections will be made to determine the extent of impact. In inaccessible areas due to topography and/or dense vegetation, a visual estimate may be used to map the vegetation extent via binocular survey, photo documentation, drawn on aerial imagery, then digitized using GIS to estimate the number, maturity, condition, and habitat value of the sampled area. Mitigation will then be fulfilled as follows.

Compensatory mitigation is required for impacts to sensitive natural communities per § 21081.6 Findings or Negative Declarations; Reporting or Monitoring Project Changes; Effect on Environment; Conditions. Therefore, the following compensatory mitigation is provided:

Mitigation Bank. The primary, streamlined approach for compensatory mitigation is payment into a local mitigation bank. The project should ideally be within the service area for the mitigation bank providing available credits for “in kind” impacts to the aforementioned sensitive vegetation communities. The minimum compensatory mitigation ratio for sensitive vegetation communities will be 3:1. If the project applicant uses an existing mitigation bank, such as Soquel Canyon Mitigation Bank1: (https://landveritasmitigationbanks.com/soquel.html) or similar, the fee fully mitigates onsite impacts and no further mitigation is necessary per BIO-1.

Vegetation Communities Replacement Plan (in lieu of mitigation bank). In the event impacts cannot be mitigated through an approved mitigation bank, then on-site and/or off-site replanting is required at a 3:1 ratio for the impacted vegetation. The replacement plantings will be planted to mimic the surrounding natural habitat in an effort to retain the functions and values per each treedominated vegetation community.

A certified arborist, qualified biologist, or licensed landscape architect will prepare a Vegetation Communities Replacement Plan (“habitat mitigation and monitoring plan"; HMMP) which shall be submitted to the City of San Dimas and CDFW (as feasible) for approval. A project-specific HMMP will 1 The Soquel Mitigation Bank is administered by Land Veritas and provides mitigation credits for walnut woodlands, oak woodlands, and coastal sage scrub
7145/San Dimas MCTA 20-0005 Page 7-1
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include location and techniques for habitat restoration, revegetation. The HMMP will define the proposed mitigation site, mitigation site preparation, installation of native vegetation replacement, seed palette, irrigation schedule, maintenance, monitoring, reporting, and performance success criteria. The HMMP will recommend feasible measures for mitigating any impacts to trees, sensitive native vegetation water quality, riparian, and biological resources from project implementation. The minimum monitoring period for restoration and replanting will be 5-years.

In addition to protecting sensitive vegetation communities, BIO-1 may also serve to satisfy a portion of the requirements of the City of San Dimas tree protection ordinances (§§16.42.020, 16.42.090,

18.162.060, 18.162. 070, and 18.162.100) as mandated by the City’s required tree removal permit for Mature Significant Trees (see Section 7.18 and MM-18, below).

7.2 BIO-2: Project Limits and Designated Areas
To avoid impacts to sensitive biological resources, the property owners will collectively implement the following measures prior to project construction and commencement of any ground-disturbing activities or vegetation removal.
• Specifications for the project boundary, limits of construction, project-related parking, storage areas, laydown sites, and equipment storage areas will be mapped and clearly marked in the field with temporary fencing, screens, silt fencing, signs, stakes, flags, rope, cord, or other appropriate markers.
• All markers will be maintained until the completion of activities in that area. Construction employees will be informed to strictly limit their activities, vehicles, equipment, and construction materials to the proposed project footprint and designated staging areas and routes of travel. The construction area(s) shall be the minimal area necessary to complete the project and shall be specified in the construction plans. • The construction crew will inspect excavated areas daily to detect the presence of trapped wildlife. See BIO-15 Wildlife Entrapment Avoidance and BIO-16 Construction Best Management Practices, below.

7.3 BIO-3: General Vegetation and Wildlife Avoidance
The BSA contains vegetation communities that can support many special-status plant and wildlife species. The property owner will implement the following general avoidance and protection measures to protect vegetation and wildlife, to the extent practical:
• Cleared or trimmed native vegetation and woody debris will be chipped and left onsite.

Cleared or trimmed non-native, invasive vegetation that are in the flowering and/or seeding/fruiting stages, then the seed heads will be bagged tightly and disposed of will be disposed of in a legal manner at an approved disposal site (landfill) as soon as possible to prevent regrowth and the spread of weeds.
• The removal of native vegetation shall be avoided and minimized to the maximum extent practicable. Temporary impacts shall be returned to pre-existing contours and revegetated with appropriate native species.
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•
•
Vehicles and equipment will be free of caked mud or debris prior to entering a project site to avoid the introduction of new invasive weedy plant species.

To minimize construction-related mortalities of nocturnally active species such as mammals and snakes, it is recommended that all work be conducted during daylight hours. Nighttime work (and use of artificial lighting) will not be permitted unless specifically authorized. If required, night lighting will be directed away from the preserved open space areas to protect species from direct night lighting. All unnecessary lights will be turned off at sunset to avoid attracting wildlife such as insects, migratory birds, and bats. •
•
•
If any wildlife is encountered during the course of project activities, said wildlife will be allowed to freely leave the area unharmed.

Wildlife will not be disturbed, captured, harassed, or handled. Animal nests, burrows and dens will not be disturbed without prior survey and authorization from a qualified biologist.

Covered trash receptacles will be placed at each designated work site and the contents will be properly disposed at least once a week. Trash removal will reduce the attractiveness of the area to opportunistic predators such as common ravens, coyotes, northern raccoons, and Virginia opossums.
•
•
The contractors and project applicant will ensure that storm water BMPs include erosion control measures for construction-related disturbance near undeveloped land with ponded water to avoid sedimentation of breeding grounds for special-status sensitive amphibians and invertebrates, such as the spadefoot toad.

Post-construction lighting. The MCTA will ensure that construction specifications provide provisions to reduce light pollution, including down-shielding or removal of motion sensor lighting, as this type of lighting can deter wildlife and impede movement throughout the area.

Night lighting can disrupt the circadian rhythms of many wildlife species. Therefore, if night lighting is required at entry points, we recommend low level lighting. All non-essential lighting should be eliminated. The Project should avoid or limit the use of artificial light during the hours of dawn and dusk, as these intervals of time are when many wildlife species are most active.
• The contractors and project applicant will ensure that storm water BMPs include erosion control measures for construction-related disturbance near undeveloped land with ponded water to avoid sedimentation of breeding grounds for special-status sensitive amphibians and invertebrates, such as the spadefoot toad.

7.4 BIO-4: Focused Botanical Surveys
To avoid impacts to special-status plant species, a qualified biologist will survey the project site for the presence of special-status plant species that are likely to occur based on habitat, soils, elevation, climate, and other conditions of the project site. The focused plant surveys will be conducted in accordance with the Protocols for Surveying and Evaluating Impacts to Special Status Native Plant Populations and Sensitive Natural Communities (CNPS, 2018) and the Guidelines for Conducting and Reporting Botanical Inventories for Federally Listed, Proposed, and Candidate Plants (USFWS, 2000).

The surveys will be conducted in the field at appropriate times of the year to coincide with the growing season and different blooming periods and when optimum conditions for identification 7145/San Dimas MCTA 20-0005 Page 7-3
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(generally blooms, fruits, and leaves) are present. Biologists will pay special attention to those habitat areas that appear to provide suitable habitat for special-status species.

A minimum of two surveys would be conducted during different seasons of the same year to adequately capture the floristic diversity of a site, with a focus on areas that will be directly or indirectly receiving impacts from project activities. Plant taxa that occur on site will be identified to the taxonomic level necessary to determine rarity and listing status, as feasible. Plant species will be identified by an expert botanist if a question of rarity and listing status occurs. Special-status plant species will be identified, recorded in field notes, counted or estimated, and mapped on an aerial map or with a GPS unit.

Following completion of the focused botanical surveys, a focused botanical survey report will be prepared in accordance with agency guidelines. The report will: 1) summarize information regarding the habitat of the survey area and the habitat’s suitability for special-status plants; 2) assess the potential presence of special-status plants onsite; 3) analyze the potential impacts to special-status plants from project development; and 4) recommend, as appropriate, BMPs, avoidance and protection measures, and mitigation measures to reduce or avoid potential impacts to special-status plants. The report will include: 1) methods and results of the literature review and field surveys; 2) figures depicting the location of special-status plants; 3) a complete flora compendium; and 4) site photographs.

Because CDFW generally considers botanical surveys to be valid for a period of up to three years, some aspects of the proposed project may warrant periodic updated surveys for certain sensitive taxa, particularly if the project is proposed to occur over a protracted time frame, or in phases, or if surveys are completed during periods of drought.

7.5 BIO-5: Habitat Assessment for Least Bell’s Vireo and Southwestern Willow Flycatcher
Potential indirect impacts to downstream riparian habitat may require a biologist with a valid Section 10(a)(1)(A) permit will perform a habitat assessment for the least Bell’s vireo (LBV) (Vireo bellii pusillus) and the southwestern willow flycatcher (SWFL) (Empidonax traillii extimus) to determine if the downstream riparian areas may support special-status species and project activities may cause an adverse effect (direct or indirect) to said species.

If the qualified biologist determines there is potential for project activities to cause an adverse effect (direct or indirect) to special-status avian species, then the authorized biologist will conduct protocol LBV surveys in accordance with the United States Fish and Wildlife’s (USFWS) LBV Survey Guidelines (dated February 1992 and revised January 19, 2001 [USFWS, 2001]) and protocol SWFL surveys in accordance with the guidelines set forth by the USFWS and the United States Geological Survey (USGS) survey protocol for the SWFL (dated July 11, 2000 [USFWS, 2000] and revised June 22, 2010 [Sogge et al., 2010]). This habitat assessment report will be submitted to USFWS and the South Coast (Region 5) CDFW office within 45 days of survey effort completion. In addition, all survey efforts completed during the calendar year should be submitted to the abovementioned agencies (USFWS, 2001a).

7.6 BIO-6: Focused Coastal California Gnatcatcher Surveys The BSA is located in the known distributional range of the California gnatcatcher (CAGN) and contains suitable coastal sage scrub habitat (coast prickly pear scrub, California sagebrush-black sage 7145/San Dimas MCTA 20-0005 Page 7-4
Biological Resources Evaluation Report Page 1344 – 2053 December 2022 ❖ MITIGATION MEASURES ❖
scrub, California buckwheat scrub) to potentially support this bird; therefore, focused surveys in accordance with the Coastal California Gnatcatcher Presence/Absence Survey Protocol (USFWS, 1997; survey protocol) will be required. The property owners will be responsible for retaining a qualified biologist holding a Section 10(a)(1)(A) permit issued by the USFWS to conduct focused surveys for CAGN. This authorized biologist will coordinate with the Carlsbad USFWS Office prior to survey.

A minimum of six surveys shall be conducted at least one week apart, between March 15 and June

30. A minimum of nine surveys shall be conducted at least two weeks apart between July 1 and March

14. Surveys should be conducted between the hours of 6:00 a.m. and 12:00 p.m. and shall avoid period of inclement conditions. No more than 80 acres of suitable CAGN habitat should be surveyed per biologist per day.

If avoidance of occupied habitat is not possible, then payment into a mitigation bank or onsite restoration will occur (See BIO-1).

A survey report should then be prepared and submitted within 45 days from survey effort completion to the Carlsbad USFWS Office and the CDFW South Coast (Region 5) Office. The survey report should include the names and permit numbers of all surveyors, survey area locations, descriptions of and mapped extent of the vegetation communities in the survey area and areas adjacent. Number age, sex, and applicable color band information for detected CAGNs should be reported by the authorized biologist.

Note: Incidental observations of raptors and sensitive avian species shall be recorded during the CAGN surveys; incidental species include but are not limited to: Cooper’s hawk, merlin, golden eagle, burrowing owl, California spotted owl, long-eared owl, coastal cactus wren, yellow warbler, and southern California rufous-crowned sparrow.

7.7 BIO-7: Focused Cactus Wren Surveys
The BSA is located in the known distributional range of the cactus wren (Campylorhynchus brunneicapillus; CAWR) and contains suitable coastal sage scrub habitat (coast prickly pear scrub, California sagebrush-black sage scrub, California buckwheat scrub) to potentially support this bird; therefore, focused surveys for this species should occur within areas of suitable habitat.

Cactus wren and the CAGN (see BIO-6) occur within similar suitable habitats. Providing that the authorized biologist with a Section 10(a)(1)(A) recovery permit for CAGN has the experience and expertise to conduct the CAWR survey, surveys may be conducted concurrently. If avoidance of occupied habitat is not possible, then payment into a mitigation bank or onsite restoration will occur (See BIO-1).

7.8 BIO-8: Preconstruction Mountain Lion Surveys (for Natal Dens) The project occurs within the Southern California/Central Coast Evolutionary Significant Unit (ESA) of the mountain lion, which is currently a Candidate State Threatened species. As a Candidate species, protections are given as a listed status species would be protected, which is full protections under CESA.

Protections for mountain lion wildlife corridors, and potential hunting, foraging habitat, and breeding opportunities within the area of the proposed MCTA, a qualified biologist familiar with the mountain lion species behavior and life history should conduct pre-construction surveys within the 7145/San Dimas MCTA 20-0005 Page 7-5
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project area and 500-foot buffer that will occur within 30 days prior to project mobilization and ground-moving activities (clear, grub, grade, excavation, etc.) A qualified biologist familiar with the mountain lion species behavior and life history should conduct surveys in areas that may provide possible habitat for mountain lion to determine the potential presence/absence of natal dens for the species. Surveys should be conducted when the species is most likely to be detected, during crepuscular periods at dawn and dusk. Survey results including negative findings should be submitted to CDFW prior to initiation of project activities.

Should an active natal den be located within 500 feet, the applicant should cease work and inform CDFW with 24 hours. No construction activities should occur in the 500-foot buffer zone until a qualified biologist in consultation with CDFW establishes an appropriate setback from the den that would not adversely affect the successful rearing of the cubs. No construction activities or human intrusion should occur within the established setback until the cubs have been successfully reared or the cats have left the area.

If take or adverse impacts to mountain lion cannot be avoided either during project construction or over the life of the project, project proponent shall consult CDFW and must acquire a CESA Incidental Take Permit (pursuant to Fish & Game Code, §2080 et seq.).

If there are no adverse effects to the mountain lion habitat, then project activities may commence without further mitigation.

7.9 BIO-9: Preconstruction Wildlife Surveys
To comply with California Fish and Game Code §§2050-2089, §3511, §4700, §5050 and §5515, the following measures will be implemented to minimize impacts to sensitive species which include, but are not limited to: southern California legless lizard, Crotch’s bumble bee, western spadefoot toad, large-blotched ensatina, coast range newt, two-striped garter snake, Blainville’s horned lizard, California glossy snake, and red diamond rattlesnake. The measures below will help to minimize or avoid direct and indirect impacts caused by project implementation to sensitive species. •
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The project applicant will retain a qualified biologist to conduct pre-construction wildlife surveys within the applicant’s APN (aka project site) and associated conservation easements.

The survey will be conducted at least seven days prior to the onset of scheduled activities, (e.g., staging and stockpiling, structure removal, clear and grub, grading, fill, etc.).

Pre-construction surveys for special-status wildlife species will concentrate attention in areas with potential to detect protected species, their nests, or indicators of presence (i.e., tracks, middens, fur, pellets, claw marks, scat, burrows, and/or vocalizations); observations of special-status species and/or sign will be recorded and mapped. During the surveys, the biologist will also record incidental observations of non-special-status species and/or their sign.
• Upon completion of the pre-construction wildlife surveys, the qualified biologist will prepare a brief letter report summarizing methods, results, and recommendations for project commencement. If greater than 7 days lapse in construction-related activities occurs within the subject parcel then an additional pre-construction survey is required. 7145/San Dimas MCTA 20-0005 Page 7-6
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•
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If it is determined that a federally-listed and/or state-listed or sensitive plant/wildlife species will be directly impacted by the project, the qualified biologist will consult with the USFWS in accordance with the Endangered Species Act § 7 and the CDFW in accordance with CESA under California Fish and Game Code § 2081(b), respectively. However, if the qualified biologist conducts thorough pre-construction surveys and determines there is no threat to special-status species, then construction may commence.

Sensitive wildlife species and/or potential nesting sites will not be disturbed, captured, handled or moved.

7.10 BIO-10: 14-Day Preconstruction Burrowing Owl Surveys A qualified biologist will conduct a preconstruction BUOW survey (Take Avoidance Survey) in accordance with the Staff Report on Burrowing Owl Mitigation (Staff Report) (CDFG, 2012) no less than 14 days prior to initiating ground disturbance activities. The survey shall be conducted in accessible portions of the Biological Study Area (BSA), a zone 500 feet out from the project site that contain BUOW essential habitat (nesting, foraging, wintering, and dispersal habitat). The survey will be conducted from sunrise to 10:00 a.m. or from two hours before sunset until evening twilight when weather conditions are conducive to BUOW observations. The biologist shall walk belt transects spaced no more than 20 meters apart to allow 100 percent visual coverage of the survey area, and examine entrances of potential burrows and suitable man-made structures for BUOWs and signs of BUOW. The biologist shall identify, record, and map with a global positioning system (GPS) unit BUOWs and potential BUOW signs. Detailed notes, including observations of wildlife species encountered during the survey, shall be recorded in field notes. A final preconstruction BUOW survey (Take Avoidance Survey) shall be conducted within 24 hours prior to ground disturbance, following the survey methodology described above (CDFG 2012).

Following the completion of the preconstruction BUOW surveys, the biologist shall prepare and electronically submit to the applicant a report summarizing the results of the survey. The report shall be prepared in accordance with the instructions described in the Staff Report. The applicant will submit one electronic copy to the project proponent and one electronic copy of the report to the City for review and concurrence prior to conducting project activities. • The results of the 14-day preconstruction BUOW surveys will be valid for 14 days. If construction is delayed more than 14 days, then the 14-day preconstruction BUOW surveys must be repeated. That will require a change order.
•
•
If no BUOW or signs of BUOW are observed during the survey and concurrence is received from the City, project activities may begin and no further mitigation will be required.

If BUOW or signs of BUOW are observed during the survey, the site will be considered occupied and the BUOW may require noise and activity shielding BMPs and/or require passively relocation. The qualified biologist will notify the City and contact CDFW to assist in the development of avoidance, minimization, and mitigation measures prior to commencing project activities. A passive relocation program (Burrowing Owl Mitigation Monitoring and Artificial Burrow and Exclusion Plan) may be necessary and will require approval by CDFW prior to commencing project activities.
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7.11 BIO-11: Preconstruction Bat Surveys
The BSA provides suitable oak woodland habitat and other large trees and structures including buildings that provide roosting sites for several special-status bay species. Three sensitive bat species were determined to have a moderate potential to occur in the BSA due to presence of suitable habitat and recent occurrences data (CNDDB, 2022a). These species are pallid bat, western mastiff bat, and big free-tailed bat.

Within 30 days prior to commencement of vegetation removal, a preconstruction bat survey shall be conducted by a qualified biologist during nighttime hours for the presence of any roosting bats.

Acoustic recognition technology shall be used for the bay survey if feasible and appropriate. If either a bat maternity roost or hibernacula (structures used by bats for hibernation) are present, a qualified biologist will develop and implement appropriate protection measures for that maternity roost or hibernacula.

If either a maternity roost or hibernacula is identified, a qualified biologist will develop and implement appropriate protection measures for that maternity roost or hibernacula. These protection measures shall include, as appropriate, safely evicting non-breeding bats, establishment of avoidance buffers, or replacement of roosts at a suitable location.

7.12 BIO-12: Preconstruction Breeding Bird Survey
To maintain compliance with the MBTA and Fish and Game Code, and to avoid impacts or take of migratory non-game breeding birds and other native birds, their nests, young, and eggs, the following measures will be implemented. Impacts to nesting birds would be a potential significant impact if protected breeding birds are present; therefore, the measures below will help to reduce direct and indirect impacts caused by construction-related activities to less than significant levels. • If project activities cannot be avoided during February 15 through September 15, a qualified biologist will conduct a preconstruction breeding bird survey for active nests (adult birds, eggs, nestlings, fledglings, and those dependent upon the nest). The breeding bird nesting season is typically from February 15 through September 15 but can vary slightly from year to year, usually depending on weather conditions.
•
•
The survey will be conducted between three to seven days prior to the onset of scheduled activities and will include all potential nest sites, such as open ground, trees, shrubs, grasses, burrows, and structures during the breeding season.

The project applicant will make every effort to conduct the pre-construction survey and subsequent removal of all physical features that could potentially serve as nest sites (e.g., staging and stockpiling, structure removal, clear and grub, grading, fill, etc.) to avoid impacts to nesting birds.
• If a breeding bird territory or an active bird nest is located during the pre-construction survey and will potentially be impacted, the site will be mapped and location provided to the construction foreman, City, and project applicant. The qualified biologist will establish a buffer zone around the active nest, which will be delimited (fencing, stakes, flagging, orange snow fencing, etc.) at a minimum of 100 feet, or as the qualified biologist determines is appropriate, for the detected species. The biologist will determine the appropriate buffer size 7145/San Dimas MCTA 20-0005 Page 7-8
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based on the planned activities and tolerances of the nesting birds. This no-activity buffer zone will not be disturbed until a qualified biologist has determined that the nest is inactive, the young have fledged, the young are no longer being fed by the parents, the young have left the area, or the young will no longer be impacted by project activities. Periodic monitoring by a biologist will be performed to determine when nesting is complete. Once the nesting cycle has finished, project activities may begin within the buffer zone. •
•
If listed bird species are observed within a project site during the preconstruction survey, the biologist will immediately map the area and notify the appropriate resource agency to determine suitable protection measures and/or mitigation measures and to determine if additional mitigation is necessary. Project activities may begin within the area only when concurrence is received from the appropriate resource agency.

Birds or their active nests will not be disturbed, captured, handled or moved. Active nests cannot be removed or disturbed; however, nests can be removed or disturbed if determined inactive by a qualified biologist.

If no breeding birds or active nests are observed during the preconstruction survey or they are observed and will not be impacted, project activities may begin and no further mitigation will be required.

7.13 BIO-13: Worker Environmental Awareness Program (WEAP) Prior to project construction activities, a qualified biologist will prepare and conduct a Worker Environmental Awareness Program (WEAP) to describe the biological constraints of the project. • All personnel who will work within a project site will attend the WEAP prior to performing any work. The WEAP will include, but not be limited to: results of preconstruction surveys; description of sensitive biological resources potentially present within a project site; legal protections afforded the sensitive biological resources; BMPs for protecting sensitive biological resources (i.e., restrictions, avoidance, protection, and minimization measures); individual responsibilities associated with the project. The program will also include the reporting requirements if workers encounter a sensitive wildlife species (i.e., notifying the biological monitor or the construction foreman, who will then notify the biological monitor). •
•
A condition shall be placed on grading permits requiring a qualified biologist to conduct a training session for project personnel prior to grading.

Training materials will be language-appropriate for all construction personnel. Upon completion of the WEAP, workers will provide their signature on a “sign-in sheet” stating that they attended the program, understand all protection measures, and will abide all the rules of the WEAP. A record of all trained personnel will be kept with the construction foreman at the project field construction office and will be made available to any resource agency personnel.
• If new construction personnel are added to the project later, the construction foreman will ensure that new personnel receive training before they start working. The biologist will provide written hard copies of the WEAP and photos of the sensitive biological resources to the construction foreman.
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7.14 BIO-14: Biological Monitor
A qualified project biologist shall monitor construction activities for the duration of the project to ensure that practicable measures are being employed to avoid incidental disturbance of habitat and species of concern outside the project footprint.

If special-status wildlife species or nesting bird species are observed and determined present within a project site during the pre-construction surveys or as required by the resource agencies, then a biological monitor shall be onsite to monitor throughout earth-moving activities that result in tree or vegetation removal, to minimize the likelihood of inadvertent impacts to protected biological resources. Monitoring shall also be conducted periodically during construction activities to ensure no new nests are built during any vegetation removal or building demolition activities between February 15 through September 15. The biological monitor shall ensure that all BMPs, avoidance, protection and mitigation measures described in the relevant project permits and reports are in place and are adhered to.

The biological monitor shall have the authority to temporarily halt all construction activities and all non-emergency actions if protected biological resources are identified and would be directly affected.

The monitor shall notify the project applicant, the City, and then the appropriate resource agency if the issue cannot be resolved. If necessary, the biological monitor shall relocate wildlife “out of harm’s way,” outside of the work area. Work can continue at the location if the qualified biological monitor determines that the activity will not result in adverse effects on the protected resource.

The appropriate agencies shall be notified if a dead or injured protected species is located within a project site. Written notification shall be made within 15 days of the date and time of the finding or incident (if known) and must include; location of the carcass, a photograph, cause of death (if known), and other pertinent information.

7.15 BIO-15: Wildlife Entrapment Avoidance
Project-related excavations shall be secured to prevent wildlife entry and entrapment. • Holes and trenches shall be backfilled, securely covered, or fenced. Excavations that cannot be fully secured shall incorporate appropriate wildlife ramp(s) at a slope of no more than a 3:1 ratio (horizontal: vertical), or other means to allow trapped animals to escape. •
•
•
Biological monitors shall provide guidance to construction crews to ensure that wildlife ramps or other means are sufficient to allow trapped animals to escape.

At the end of each work day, a biological monitor shall ensure that excavations have been secured or provided with appropriate means for wildlife escape.

All pipes or other construction materials or supplies will be covered or capped in storage or laydown areas. No pipes or tubing will be left open either temporarily or permanently, except during use or installation.

Any construction pipe, culvert, or other hollow materials will be inspected for wildlife before it is moved, buried, or capped. This type of inspection will be conducted to preclude or minimize potential impacts to all targeted species.
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7.16 BIO-16: Construction Best Management Practices
Project work crews will be directed to use BMPs where applicable. These measures will be identified prior to construction and incorporated into the construction operations.

Implementation of this mitigation measure will help to avoid, eliminate or reduce impacts to sensitive biological resources, such as special-status terrestrial wildlife species, to less than significant levels. BMPs that apply to this project construction and development are as follows:
• Water pollution and erosion control plans shall be developed and implemented in accordance with RWQCB (NPDES, § CWA, and/or SWRCB Resolution No. 2019-0015 [Waste Discharge Requirements]) requirements, as discussed in Sections 3.2.7 and 3.2.8. • Equipment storage, fueling, and staging areas shall be located on upland sites with minimal risks of direct drainage into riparian areas or another sensitive habitat. These designated areas shall be located in such a manner as to prevent any runoff from entering sensitive habitat. Necessary precautions shall be taken to prevent the release of cement or other toxic substances into surface waters. Project-related spills of hazardous materials shall be reported to appropriate entities including but not limited to applicable jurisdictional areas per the City, USFWS, and CDFG, RWQCB and shall be cleaned up immediately and contaminated soils removed to approved disposal areas.
• The natural resource agencies shall have the right to access and inspect any sites of approved projects including any restoration/enhancement area for compliance with project approval conditions including these BMPs.

7.17 BIO-17: Jurisdictional Delineation Survey and Report Applicants of grading permits pursuant to the proposed MCTA would be required to contract with an authorized biologist to conduct a jurisdictional delineation assessment on their property to determine the presence and extent of potential waters of the U.S. or State (including but not limited to wetlands, ephemeral and intermittent drainages, and associated vegetation communities) that would be subject to the jurisdictional authority of the United States Army Corps of Engineers (USACE), the California State Water Resources Control Board (SWRCB, as represented by the Los Angeles RWQCB), and CDFW. If the assessment determines that the subject property may contain waters of the U.S. or State, a jurisdictional delineation survey is required.

Upon completion of the survey, waters of the U.S or State, if present on the applicant’s property, would be mapped and described in a jurisdictional delineation report that meets or exceeds the report standards of the USACE, Los Angeles District office. The report would include a determination of potential impacts to waters of the U.S. or State (including associated vegetation communities) that would result from the applicant’s project, quantify the area (in acres and square feet) of impacts to waters under the jurisdiction of each agency, and provide a list of permits, authorizations, and agreements required by the applicant from each agency. The report would also recommend impact avoidance and/or minimization measures and best management practices, and compensatory mitigation, as applicable.
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7.18 BIO-18: Mature Significant Tree Protection Measures There are numerous trees in the project areas that are designated as “mature significant trees” as per the City’s tree preservation ordinance. Refer to Section 3.3.2 for an expanded discussion of the tree ordinance.

Prior to the issuance of a grading permit, in accordance with the tree preservation ordinance, a certified arborist will conduct a complete tree inventory of the project site and adjacent areas within the property of the applicant, including conservation easements. The tree inventory will include the location, species, estimated height, canopy dripline (estimate if inaccessible), health, and diameter(s) (see measurement requirements below). Transplantable saplings will also be noted.

Measurements. The trunk diameter must be measured at a point thirty-six inches above the ground at the base of the tree. Mature significant trees include:
• Any tree of the Genus Quercus (oak) measuring greater than eight inches or more in trunk diameter, and/or
•
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Any other species of tree that measures ten inches or more in trunk diameter, and/or Any multi-trunk tree(s) having a total circumference of thirty-eight inches or more; the multitrunk tree shall include at least one trunk with a diameter of a minimum of four inches”.

The ordinance also requires that no significant trees shall be removed or relocated on an undeveloped area of a property without first submitting an arborist report and obtaining a tree removal permit from the City’s Development Services, Planning Division.

The arborist report will incorporate the aforementioned tree inventory criteria, as well as provisions for disease management using best available management practices including: (1) treated infected trees before removing them from the project site; (2) cleaning and disinfecting all pruning and power tools before and after use to prevent the introduction and/or spread of pathogens; (3) and irrigation avoidance within oak tree canopies. Recommendations for onsite and/or offsite replanting methods will be provided. It is suggested that the City require replanting efforts to mimic the surrounding landscape and avoid separate landscape tree plantings as replacement, which do not meet the definition of CEQA for appropriate mitigation to less than a significant level. § 18.162.060 Conditions Imposed of the Tree Preservation Ordinance:
• Tree relocation and/or two for one replacement with minimum fifteen-gallon box tree(s), or other replacement of equivalent value and size, within the subject property. The two for one replacement ratio may be reduced as determined by the final decision-making body, if a minimum of one of the following additional findings are made: (1) The reduced replacement requirement is consistent with the purposes of this chapter; (2) the tree(s) in question are located where the impact of the tree removal on the community is limited (such as trees in a generally flat portion of the rear yard of a single-family house that are deemed to have less public benefit);
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•
When on-site features, project constraints, and/or other considerations exist which prevent reasonable on-site relocation, relocation to an approved off-site location shall be permitted; If said conditions are imposed, the owner will be responsible for all replacement and relocated trees for a minimum period of two years. If during this time the tree(s) is (are) declared 7145/San Dimas MCTA 20-0005 Page 7-12
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unhealthy by a certified arborist as set forth in § 18.162.090, the diseased trees shall be removed and replaced at the cost of the applicant, as set forth in § 18.162.100 • A maintenance agreement shall be submitted by the applicant and established for each replaced and relocated tree. The maintenance agreement and maintenance responsibility shall be transferred with the sale of the property if title to the property is transferred within the specified maintenance period. (Ord. 1165 § 4, 2006)”
If approved by the City, compensatory mitigation may occur through a fee payment into a local mitigation bank and/or through development and implementation of an HMMP (see BIO-1).

Replanting may occur onsite or offsite (within the reserved open space conservation easement) as “restoration/rehabilitation” and/or “enhancement.” The conservation easement must allow for habitat restoration activities if available as an option. The replacement plantings will be planted to mimic the surrounding natural habitat in an effort to retain the functions and values per each treedominated vegetation community. Individual disjointed plantings will be avoided to the maximum extent feasible, in an effort to maintain or prevent net loss of the existing surrounding landscape.

Upon City approval, BIO-1 may fully mitigate for BIO-18, This mitigation will satisfy the City’s Tree Preservation and Protection ordinance (Municipal Code Chapter 106.39) and will ensure equal or superior ecological viability as required in the FEIR, General Plan, and as per CEQA§ 21081.6 Findings or Negative Declarations; Reporting or Monitoring Project Changes; Effect on Environment; Conditions.
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8.0 POTENTIAL FEDERAL, STATE AND LOCAL BIOLOGICAL PERMITS, AND

APPROVALS
Each project pursuant to the proposed MCTA must comply with federal, state, and local environmental laws, regulations, and ordinances. Any project that proposes to fill or otherwise physically alter creeks, wetlands, or other waters requires federal, state and, in some cases, local permits before it can proceed. Both permanent and temporary impacts would require permits. Prior to project implementation and impacts (permanent or temporary) to waters of the U.S. and/or State, a project may need to submit the following federal and state notifications and potentially obtain the following federal and/or state biological permits and/or approvals, as determined by the resource agencies:
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Preconstruction Notification to the U.S. Army Corps of Engineers, Los Angeles District Office (USACE)
Section 401 Water Quality Certification or a California Waste Discharge Requirement Permit from the Los Angeles Regional Water Quality Control Board (RWQCB) Lake or Streambed Alteration Agreement from the California Department of Fish and Wildlife, South Coast Region (CDFW)
General Permit for Discharges of Storm Water Associated with Construction Activity (Construction General Permit) Order 2009-0009-DWQ) or proof of compliance with Section IV(D)(8)(d)(1) of the MS4 Permit (Order No. R4-2012-0175 as amended by State Water Board Order WQ 2015-0075 and Los Angeles Water Board Order R4-2012-0175-A01 NPDES Permit No. CAS004001)
•
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Incidental Take Permit from the CDFW
Tree Removal Permit from the City of San Dimas.

The following sections describe the process to obtain the necessary permits and approvals.

8.1 Section 404 Preconstruction Notification
Waters of the U.S. under the jurisdiction of the USACE (§ 404 CWA) occur within the BSA; therefore, further evaluation through a jurisdictional delineation survey (BIO-17) is required for projects pursuant to the proposed MCTA. A jurisdictional delineation survey is necessary to determine whether, and to what extent, a project will result in impacts to waters of the U.S. If a project will impact waters of the U.S., a Preconstruction Notification (PCN) must be submitted to the USACE, Los Angeles District Office. The USACE will review the PCN and determine if the project may proceed or if the project requires a permit (e.g., Nationwide Permit, § 404 permit) pursuant to § 404 of the CWA.

Jurisdictional delineation surveys are discussed in Section 7.17.

8.2 Section 401 Water Quality Certification
Waters of the U.S. under the jurisdiction of the RWQCB occur within the BSA; therefore, further evaluation through a jurisdictional delineation survey (BIO-17) is required for projects pursuant to the proposed MCTA. A jurisdictional delineation survey is necessary to determine whether, and to what extent, a project will result in impacts to waters of the U.S. If a project will impact waters of the U.S., a Water Quality Certification (WQC) application must be submitted to the RWQCB. The RWQCB will review the WQC application and determine if the project may proceed or if the project requires 7145/San Dimas MCTA 20-0005 Page 8-1
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7.17. 8.3 State Water Resources Control Board Waste Discharge Requirements Permit Waters of the State under the jurisdiction of the RWQCB occur within the BSA; therefore, further evaluation through a jurisdictional delineation survey (BIO-17) is required for projects pursuant to the proposed MCTA. A jurisdictional delineation survey is necessary to determine whether, and to what extent, a project will result in impacts to waters of the State. If a project will impact waters of the State, a Waste Discharge Requirements (WDR) permit application must be submitted to the RWQCB. The RWQCB will review the WDR application and determine if the project may proceed or if the project requires a WDR pursuant to State Water Resources Control Board Resolution No. 2019- 0015. Jurisdictional delineation surveys are discussed in Section 7.17.

8.4 Lake or Streambed Alteration Agreement
Waters of the State under the jurisdiction of CDFW occur within the BSA; therefore, further evaluation through a jurisdictional delineation survey (BIO-17) is required for projects pursuant to the proposed MCTA. A jurisdictional delineation survey is necessary to determine whether, and to what extent, a project will result in impacts to waters of the State under CDFW jurisdiction. If a project will impact waters of the State, a Lake or Streambed Alteration Notification must be submitted to CDFW via their Environmental Permit Information Management System (EPIMS) website. CDFW will review the Notification and determine if the project may proceed or if the project requires a Lake or Streambed Alteration Agreement (LSAA) pursuant to § 1600 et seq. of the California Fish and Game Code. Jurisdictional delineation surveys are discussed in Section 7.17.

8.5 Construction Stormwater Permits
To minimize or avoid erosion, sediment-laden stormwater, contaminated stormwater, or nonstormwater contaminates from entering storm drains and drainages, projects pursuant to the proposed MCTA are required to obtain a Construction General Permit (for projects that would disturb one or more acres of soil during construction) or show compliance with § IV(D)(8)(d)(1) of the MS4 Permit (for projects that would disturb less than one acre of soil during construction). These permits require the preparation of a project-specific SWPPP and implementation, management, and (if necessary) replacement of construction stormwater BMPs as directed in the SWPPP.

8.6 Incidental Take Permits
Federal or state listed endangered or threatened wildlife species may occur within the BSA; therefore, further evaluation through focused and protocol wildlife surveys (BIO-4, BIO-5, and BIO- 6) is required for projects pursuant to the proposed MCTA. Focused and protocol surveys are necessary to determine whether, and to what extent, a project will result in impacts to federal listed endangered or threatened species or if the project will impact state listed. If a project will impact federal and/or state listed endangered, threatened, or candidate species, an incidental take permit (ITP) pursuant to Section 10(a)(1)(B) of the FESA is required when non-federal, otherwise lawful activities, including lawful project development, will result in take of threatened or endangered wildlife. Likewise, an ITP pursuant to CESA from CDFW is required when such projects will result in impacts to state listed endangered, threatened, or candidate species. The agencies may authorize an ITP is certain conditions are met.
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8.7 Compensatory Habitat Mitigation and Monitoring Plan The USACE and State of California have set a goal to prevent further decline of wetlands through a “no net loss” approach. Projects are required to be in compliance with wetland laws and regulations and to implement the State and federal policies of no net loss of wetlands. As a result, project related impacts to jurisdictional waters and wetlands require mitigation through the creation, restoration, enhancement, and/or preservation of wetlands within a project site or offsite.

A draft Habitat Mitigation and Monitoring Plan (HMMP), if required by the regulatory agencies, will need to be prepared and submitted along with the permit packages and applications (described in the following sections) to the appropriate resource agencies. The HMMP will describe the mitigation, monitoring, and management of waters and habitat provided as mitigation, as required by all the resource agencies (USACE, RWQCB, CDFW). This may include onsite or offsite preservation, restoration, and enhancement. The objective of the compensatory mitigation is to replace functions and values lost by impacts to jurisdictional waters and sensitive habitat after avoidance and minimization has been achieved to the maximum extent practicable. The format of the plan will follow the regulation set forth in the USACE’s Los Angeles District Mitigation Guidelines and Monitoring Requirements, dated April 19, 2004, as amended, and the Mitigation Rule (33 CFR part 332; 73 FR 19670-19687 [April 10, 2008]). In compliance with the 2008 regulations (33 CFR 332.4[c]), the HMMP will address the following items; objectives, site selection, site protection instrument, baseline information, determination of credits, mitigation work plan, maintenance plan, performance standards, monitoring requirements, long-term management plan, adaptive management plan, and financial assurances. No work in jurisdictional areas will be authorized until the project proponent receives, in writing (by letter or email), USACE approval of the final HMMP.

Waters of the U.S. and State, including wetlands and sensitive habitats occur throughout the BSA; therefore, a compensatory HMMP may be required.

8.8 Tree Removal Permit
A tree removal permit pursuant to the City of San Dimas Municipal Code 18.162 for removal of protected mature significant trees and other trees which are determined to be desirable is required.

Removal or relocation of mature significant trees and must be approved by the Director of Development Services or the Development Plan Review Board. This approval is subject to conditions as deemed necessary to implement the provisions of the ordinance. Measures applicable to the Tree Removal Permit are discussed in BIO-1 and BIO-18.
7145/San Dimas MCTA 20-0005 Page 8-3
Biological Resources Evaluation Report Page 1356 – 2053 December 2022 ❖ LITERATURE AND REFERENCES ❖

9.0 LITERATURE CITED AND REFERENCES
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Quinn, N. M. et al., 2018. Pest Notes: Ground Squirrels. UC ANR Publication 7438, revised December 2018. University of California Agriculture and Natural Resources. Statewide Integrated Pest Management Program. Available at http://ipm.ucanr.edu/PMG/PESTNOTES/pn7438.html.

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California Native Plant Society Press. Sacramento, CA. 1300 pp.

Spencer, W.D, P. Beier, K. Penrod, K. Winters, C. Paulman, H. Rustigian-Ronsos, J. Strittholt, M. Parisi, and A. Pettler, 2010. California Essential Habitat Connectivity Project: A Strategy for Conserving a Connected California. Prepared for California Department of Transportation, California Department of Fish and Game, and Federal Highways Administration.

Shuford et al., 2008. California Bird Species of Special Concern: A ranked assessment of species, subspecies, and distinct populations of birds of immediate conservation concern in California.

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Accessed on May 18, 2022.

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https://cms8.revize.com/revize/sandimasca/Document_Center/Department/Community 7145/San Dimas MCTA 20-0005
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❖ LITERATURE AND REFERENCES ❖
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Accessed on
USDA, 2010. Federal Noxious Weed List. December 10, 2010. Available at http://www.aphis.usda.gov/plant_health/plant_pest_info/weeds/downloads/weedlist.pdf.

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USDA NRCS (United States Department of Agriculture, Natural Resources Soil Conservation Service). 2022a. Soil Data Access (SDA) State Hydric Soils List. Available at https://www.nrcs.usda.gov/Internet/FSE_DOCUMENTS/nrcseprd1316619.html. Accessed on August 20, 2022.

USDA NRCS, 2011. Official Soil Series Descriptions: Zaca Series, Soil Survey Staff, Natural Resources Conservation Service. Available at:
https://soilseries.sc.egov.usda.gov/OSD_Docs/Z/ZACA.html#:~:text=The%20soils%20of% 20the%20Zaca,F%20(16%20degrees%20C). Accessed on September 2, 2022.

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USGS (U.S. Geological Survey), 2022. National Hydrography Dataset (ver. USGS National Hydrography Dataset Best Resolution (NHD) for Hydrologic Unit (HU) 8. Available at 7145/San Dimas MCTA 20-0005 Page 9-6
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Wilson, D.E. and D.M. Reeder (editors), 2005. Mammal Species of the World. A Taxonomic and Geographic Reference (3rd ed), Johns Hopkins University Press. 2,142 pp.

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Biological Resources Evaluation Report Page 1363 – 2053 December 2022  APPENDICES 

APPENDIX A

FIGURES

San Dimas
MCTA 20-0005
Legend
Project Boundary
Biological Study Area (BSA)
Key Map
Kern County
San
Bernardino
County
Los Angeles
County Ventura
County
Project
Location
Orange
County
Riverside
County
P a c i f i c
O c e a n
0 ¯
0 225
60 450 Feet
Scale: 1:5,400
120 Meters
Project Boundary and
Biological Study Area (BSA)
Figure 1
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_San_Dimas_MCTA_Project_Location_BSA_2022_10_21.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San
Bernardino
County
Los Angeles
County
Project
Location
Riverside
County
Orange
Project Location County
P a c i f i c
O c e a n
P a c i f i c O c e a n
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\Gissvr\gis\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\7145_SanDimas_2_0_Regional_Location_2022_02_10.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community; Los Angeles County, 2021; UltraSystems Environmental, Inc., 2022 February 10, 2022
Legend San Dimas MCTA ¯
Scale: 1:633,600
Regional Location Project Location
Figure 2
0 0
5 10 Miles

5.5 11 Kilometers

UNINCORPORATED

CITY OF

COVINA UNINCORPORATED

CITY OF

SAN DIMAS

UNINCORPORATED
San
Bernardino
County
Los
Ventura
County
Angeles
County
Project Location
Orange
County
Riverside
County
P a c i f i c
O c e a n San Diego
County
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\Gissvr\gis\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\7145_SanDimas_3_0_Project_Vicinity_2022_02_10.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community; Los Angeles County, 2020-2021; UltraSystems Environmental, Inc., 2022 February 10, 2022
San Dimas MCTA Legend ¯
Scale: 1:18,000
Project Boundary Project Vicinity
Figure 3
0 0
750 1,500 Feet

0.15 0.3 Kilometers

7 8 9 10
17 16 15
18 22 21 19
San
Bernardino
County
20 Los
Angeles
Ventura County
County
Project Location
Riverside
County 29 28 27
Orange
County
P a c i f i c
O c e a n
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\Gissvr\gis\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\7145_SanDimas_4_5_Topo_2022_02_10.mxd February 10, 2022 Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Sources: Esri, HERE, Garmin, Intermap, increment P Corp., GEBCO, USGS, FAO, NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esri Japan, METI, Esri China (Hong Kong), (c) OpenStreetMap contributors, and the GIS User Community, Copyright:© 2013 National Geographic Society, i-cubed; CA Dept. of Conservation, May 2019; UltraSystems Environmental, Inc., 2022 Legend San Dimas MCTA
¯ Quadrangle Map
Scale: 1:24,000 USGS Topographic Project Boundary
Half-Mile Radius
Section Boundary
Figure 4
USGS Quadrangle: San Dimas
Township: 1S Range: 9W
Sections:17,20 0
0 1,000
250
2,000 Feet
500 Meters

San
Los
Angeles
County
Bernardino
County
Riverside
Project Location County
Orange
County
Pacific
Ocean
Pa
ar
s
le M

7.4 31
30 3
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\Gissvr\gis\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\7145_SanDimas_MCTA_PARCELS_INFO_AreaSQFT_2022_04_20.mxd April 20, 2022 Service Layer Credits: Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community, Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Esri, HERE, Garmin, (c) OpenStreetMap contributors, and the GIS user community UltraSystems Environmental, Inc., 2022 Legend San Dimas MCTA
¯
500 Feet
Parcel Map Scale: 1:6,000 Project Boundary Figure 5
Project Parcel (sqft)
0 0
250
70 140 Meters

San Dimas
MCTA
Legend
Project Boundary
500ft Biological Study Area 1232
Soil Map Unit
1007-Urban land-Biscailuz-Pico
complex, 0 to 2 percent slopes
1141-Zaca-Apollo, warm complex,
20 to 55 percent slopes
1232 1232-Counterfeit-Urban land
complex, 10 to 35 percent slopes,
terraced
1232
Key Map
Kern County
1232
1007 San
Bernardino
County
1141 1141
Ventura
County Los Angeles
County Project
Location
1232 1232
1141
Riverside
County
P a c i f i c
O c e a n Orange
County 1007
0 225 450 Feet ¯
1007
Scale: 1:5,400
1141 0 60 120 Meters
USDA Soils
Figure 6
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_SanDimas_MCTA_4_4_Soil_11x17_2022_09_29.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; USDA, 2020; UltraSystems Environmental, Inc., 2022

San Dimas
MCTA
Legend
Project Boundry
2-Mile Radius
Common Name, Scientific Name
California Walnut Woodland
Plummer's mariposa-lily, Calochortus
plummerae
Walnut Forest
Chaparral ragwort, Senecio aphanactis
Intermediate mariposa-lily, Calochortus
weedii var. intermedius
Many-stemmed dudleya, Dudleya
multicaulis
Key Map
Kern County
San
Bernardino
County
Ventura
County
Los Angeles
County
Project
Location
Riverside
County
Orange
County
P a c i f i c
O c e a n
0 ¯
0 0.25 0.5 Miles
Scale: 1:31,680

0.25 0.5 Kilometers
CNDDB Known Occurrences
Plant Species and Habitats
Figure 7
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_SanDimas_MCTA_CNDDB_Plant_2022_09_30.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; CDFW, September 2022; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA
Legend
Project Boundry
2-Mile Radius
Common Name, Scientific Name
American badger, Taxidea
! ! !
Arroyo chub, Gila orcuttii
Coastal California gnatcatcher,
Polioptila californica californica
Coastal whiptail, Aspidoscelis tigris
stejnegeri
Merlin, Falco columbarius
Pallid bat, Antrozous pallidus
! ! ! Pocketed free-tailed bat, Nyctinomops
femorosaccus
Southern California rufous-crowned
sparrow, Aimophila ruficeps canescens
Western mastiff bat, Eumops perotis
californicus
Key Map
Kern County
San
Bernardino
Ventura
County
Los Angeles
County
County
Project Riverside
County
Orange
County
Location
P a c i f i c
O c e a n
0 ¯
0 0.25 0.5 Miles
Scale: 1:31,680

0.25 0.5 Kilometers
CNDDB Known Occurrences
Wildlife Species and Habitat
Figure 8
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_SanDimas_MCTA_CNDDB_Wildlife_2022_09_30.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; CDFW, September 2022; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
Conservation Easement
Land Cover
California buckwheat scrub
California buckwheat scrub (disturbed)
California sagebrush - black sage scrub
California walnut groves
California walnut groves (disturbed)
Coast live oak woodland and forest
(disturbed)
Coast prickly pear scrub
Developed/Ornamental 24
25 23
22 Pepper tree groves
Upland mustards or star-thistle fields
Upland mustards or star-thistle fields
(mowed)
21 17
16 26 18 20 19 Key Map
15 14
San
Bernardino
County
27 28
Los Angeles
County
13 12
Project
Location
29 Orange
County
Riverside
County 11
30 9
P a c i f i c
O c e a n 10 31 San Diego
County 32
7 33
6 36 ¯
8 1
34 5
35 0
0 175
50 350 Feet
2 3 4 Scale: 1:4,200
100 Meters
Land Cover Overview Map
Figure 9

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_Overview_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
Conservation Easement
Land Cover
California buckwheat scrub
California buckwheat scrub (disturbed)
California walnut groves
California walnut groves (disturbed)
Coast live oak woodland and forest
(disturbed)
30 Coast prickly pear scrub
10 Developed/Ornamental
31 Upland mustards or star-thistle fields
Upland mustards or star-thistle fields
32 (mowed)
7 9
33 36
8 1
34 35
2 Key Map
6 5 3 4
5 4
6 2
3 P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover
Figure 9a

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
17 16
2 Conservation Easement
18 20 Land Cover
19 California buckwheat scrub
California buckwheat scrub (disturbed)
California sagebrush - black sage scrub
California walnut groves
15 14
Coast prickly pear scrub
Developed/Ornamental
Pepper tree groves 27
Upland mustards or star-thistle fields
Upland mustards or star-thistle fields
(mowed) 13
28 12
11 Key Map
10 5
4 6
2 3
P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover
Figure 9b

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
Land Cover
California buckwheat scrub
California walnut groves
Coast live oak woodland and forest
(disturbed)
Developed/Ornamental
Pepper tree groves
Upland mustards or star-thistle fields
(mowed)
23 22
Key Map
21 17
16 5
4 18 20
19 6
3 2
P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover
Figure 9c

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
7145_OpenSpaceParcel
Project Boundary
Project Parcels
Conservation Easement
Land Cover
California buckwheat scrub
California walnut groves
California walnut groves (disturbed)
Developed/Ornamental
Upland mustards or star-thistle fields
Upland mustards or star-thistle fields
(mowed) Open Space
Key Map
5 4 24
23 22
6 3
2 25
P a c i f i c
O c e a n
¯
21 0 100 200 Feet
26 Scale: 1:2,400
0 25 50 Meters
20 Land Cover
Figure 9d

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
Conservation Easement
Land Cover
California buckwheat scrub
California walnut groves
Coast live oak woodland and forest
(disturbed)
Developed/Ornamental
Upland mustards or star-thistle fields
(mowed)
27 28
29 Key Map
1 30
10 5
4 31
6 2
3 32
7 9
33 36
P a c i f i c
8 O c e a n
34 35
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover
Figure 9e

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
Remaining Parcel (extension to CE
Boundary)
Conservation Easement
Land Cover
California buckwheat scrub
California sagebrush - black sage scrub
California walnut groves
California walnut groves (disturbed)
Coast live oak woodland and forest
24 (disturbed)
25 23
22 Coast prickly pear scrub
Developed/Ornamental
Pepper tree groves
Upland mustards or star-thistle fields
21 Upland mustards or star-thistle fields
(mowed)
17 16
26 18 20 19 Key Map
15 14
San
Bernardino
County
27 28
Los Angeles
County
13 12
Project
Location
29 Orange
County
Riverside
County 11
30 9
P a c i f i c
O c e a n 10 31 San Diego
County 32
7 33
6 36 ¯
8 1
34 5
35 0
0 175
50 350 Feet
2 3 4 Scale: 1:4,200
100 Meters
Land Cover Impacts
Overview Map
Figure 10

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_Impact_Overview_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
Remaining Parcel (extension to CE
Boundary)
Conservation Easement
Land Cover
California buckwheat scrub
30 California walnut groves
California walnut groves (disturbed) 10
31 Coast live oak woodland and forest
(disturbed)
Developed/Ornamental 32
7 9 Upland mustards or star-thistle fields
33 36 Upland mustards or star-thistle fields
(mowed) 8 1
34 35
2 Key Map
6 5 3 4
5 4
6 2
3 P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover Impacts
Figure 10a

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_Impact_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
17 16
2 35% Lot Coverage (existing allowance)
18 20 20ft Grading Area Extension (MCTA,
19 1,000cuyd)
Remaining Parcel (extension to CE
Boundary)
15 Conservation Easement
14 Land Cover
California buckwheat scrub
California sagebrush - black sage scrub
27 California walnut groves
Coast prickly pear scrub
13 Developed/Ornamental
28 Upland mustards or star-thistle fields
Upland mustards or star-thistle fields
(mowed)
12 11 Key Map
10 5
4 6
2 3
P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover Impacts
Figure 10b

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_Impact_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
Remaining Parcel (extension to CE
Boundary)
Land Cover
California buckwheat scrub
California walnut groves
Coast live oak woodland and forest
(disturbed)
Developed/Ornamental
Pepper tree groves
Upland mustards or star-thistle fields
(mowed) 23
22 Key Map
21 17
16 5
4 18 20
19 6
3 2
P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover Impacts
Figure 10c

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_Impact_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
7145_OpenSpaceParcel
Project Boundary
Project Parcels
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
Remaining Parcel (extension to CE
Boundary)
Conservation Easement
Land Cover
California buckwheat scrub
California walnut groves
Open Space California walnut groves (disturbed)
Developed/Ornamental
Upland mustards or star-thistle fields
(mowed)
Key Map
5 4 24
23 22
6 3
2 25
P a c i f i c
O c e a n
¯
21 0 100 200 Feet
26 Scale: 1:2,400
0 25 50 Meters
20 Land Cover Impacts
Figure 10d

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_Impact_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
Remaining Parcel (extension to CE
Boundary)
Conservation Easement
Land Cover
California buckwheat scrub
California walnut groves
Coast live oak woodland and forest
(disturbed)
27 Developed/Ornamental
Upland mustards or star-thistle fields
(mowed)
28 29
Key Map
1 30
10 5
4 31
6 2
3 32
7 9
33 36
P a c i f i c
8 O c e a n
34 35
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Land Cover Impacts
Figure 10e

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_LandCover_Impact_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
MCTA
Legend
Project Boundary
USGS Stream
HUC12, Name
180701060402, Big Dalton Wash
180701060501, Upper San Jose
Creek
USGS Waterbody
Project
Location
Key Map
Kern County
San
Bernardino
County Ventura
County
Los Angeles
County
Project
P a c i f i c
O c e a n
Location
Orange
County
Riverside
County
¯
0 0
500 1,000 Feet
Scale: 1:12,000
300 Meters
USGS Surface Waters
and Watersheds
Figure 11
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\Gissvr\gis\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\7145_SanDimas_MCTA_4_10_Surface_Waters_11x17_2022_03_07.mxd Service Layer Credits: Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community, Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Esri, HERE, Garmin, (c) OpenStreetMap contributors, and the GIS user community; USGS, 2020; UltraSystems Environmental, Inc., 2022

San Dimas
Drainages MCTA 20-0005
Ø Culvert Legend
Catchbasin
Project Boundary
Ribbon Drain Project Parcels
Drainage (assessed from
Underground Culvert
Open Channel
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
Remaining Parcel (extension to CE
USFWS NWI Wetland Type Boundary)
Freshwater Forested/Shrub
Freshwater Pond
Conservation Easement
Land Cover
California buckwheat scrub
Riverine California buckwheat scrub (disturbed)
California sagebrush - black sage scrub
California walnut groves
Riparian Wetland Type
Forested/Shrub Riparian
California walnut groves (disturbed)
24 25
Coast live oak woodland and forest
(disturbed)
23 22
Coast prickly pear scrub
Developed/Ornamental
Pepper tree groves
Upland mustards or star-thistle fields
21 Upland mustards or star-thistle fields
17 (mowed)
16 26 18 20 19
Key Map
15 14
27 28
San
Bernardino
County
Los Angeles
13 County
12 Project
Location 29
11 Riverside
County
Orange
30 County
9 10 31
P a c i f i c
O c e a n
32 7
San Diego
County
33 36
6 8 1
34 5
¯
35 2
0 0
175
50 350 Feet
3 4
Scale: 1:4,200
100 Meters
Bio Constarints Impacts
Overview Map
Figure 12

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

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San Dimas
Drainages MCTA 20-0005
Ø Culvert Legend
Catchbasin
Project Boundary
Ribbon Drain
Project Parcels
Drainage (assessed from
Underground Culvert
Open Channel
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
USFWS NWI Wetland
Freshwater Forested/Shrub
Freshwater Pond
Remaining Parcel (extension to CE
Boundary)
Conservation Easement
Riverine Land Cover
California buckwheat scrub
California walnut groves
Riparian Wetland Type
Forested/Shrub Riparian 30
California walnut groves (disturbed) 10
31 Coast live oak woodland and forest
(disturbed)
Developed/Ornamental 32
7 9 Upland mustards or star-thistle fields
33 36 Upland mustards or star-thistle fields
(mowed) 8 1
34 35
2 Key Map
6 5 3 4
5 4
6 2
3 P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Bio Constraints Impacts
Figure 12a

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

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San Dimas
Drainages MCTA 20-0005
Ø Culvert Legend
Catchbasin
Project Boundary
Ribbon Drain
Project Parcels
Drainage (assessed from
Underground Culvert
Open Channel
17 16
2 35% Lot Coverage (existing allowance)
18 20 20ft Grading Area Extension (MCTA,
19 1,000cuyd)
USFWS NWI Wetland
Freshwater Forested/Shrub
Freshwater Pond
Remaining Parcel (extension to CE
Boundary)
15 Conservation Easement
14 Riverine Land Cover
California buckwheat scrub
California sagebrush - black sage scrub
California walnut groves
Riparian Wetland Type
Forested/Shrub Riparian
27 Coast prickly pear scrub
13 Developed/Ornamental
28 Upland mustards or star-thistle fields
Upland mustards or star-thistle fields
(mowed)
12 11 Key Map
10 5
4 6
2 3
P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Bio Constraints Impacts
Figure 12b

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_BioConstr_Impact_MapBook_20221213.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

San Dimas
Drainages MCTA 20-0005
Ø Culvert Legend
Catchbasin
Project Boundary
Ribbon Drain
Project Parcels
Drainage (assessed from
Underground Culvert
Open Channel
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
USFWS NWI Wetland
Freshwater Forested/Shrub
Freshwater Pond
Remaining Parcel (extension to CE
Boundary)
Land Cover
California buckwheat scrub
California walnut groves
Riverine
Riparian Wetland Type
Forested/Shrub Riparian Coast live oak woodland and forest (disturbed)
Developed/Ornamental
Pepper tree groves
Upland mustards or star-thistle fields
(mowed) 23
22 Key Map
21 17
16 5
4 18 20
19 6
3 2
P a c i f i c
O c e a n
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Bio Constraints Impacts
Figure 12c

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

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San Dimas
Drainages MCTA 20-0005
Ø Culvert Legend
Catchbasin
7145_OpenSpaceParcel
Project Boundary
Ribbon Drain
Drainage (assessed from
Underground Culvert
Open Channel
Project Parcels
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
USFWS NWI Wetland 1,000cuyd)
Freshwater Forested/Shrub
Freshwater Pond
Remaining Parcel (extension to CE
Boundary)
Riverine Conservation Easement
Riparian Wetland Type Land Cover
Forested/Shrub Riparian California buckwheat scrub
California walnut groves
Open Space California walnut groves (disturbed)
Developed/Ornamental
Upland mustards or star-thistle fields
(mowed)
Key Map
5 4 24
23 22
6 3
2 25
P a c i f i c
O c e a n
¯
21 0 100 200 Feet
26 Scale: 1:2,400
0 25 50 Meters
20 Bio Constraints Impacts
Figure 12d

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

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San Dimas
Drainages MCTA 20-0005
Ø Culvert Legend
Catchbasin
Project Boundary
Ribbon Drain
Project Parcels
Drainage (assessed from
Underground Culvert
Open Channel
35% Lot Coverage (existing allowance)
20ft Grading Area Extension (MCTA,
1,000cuyd)
USFWS NWI Wetland
Freshwater Forested/Shrub
Freshwater Pond
Remaining Parcel (extension to CE
Boundary)
Conservation Easement
Riverine Land Cover
California buckwheat scrub
California walnut groves
Riparian Wetland Type
Forested/Shrub Riparian
Coast live oak woodland and forest
(disturbed)
27 Developed/Ornamental
Upland mustards or star-thistle fields
(mowed)
28 29
Key Map
1 30
10 5
4 31
6 2
3 32
7 9
33 36
P a c i f i c
8 O c e a n
34 35
0 100 200 Feet ¯
Scale: 1:2,400
0 25 50 Meters
Bio Constraints Impacts
Figure 12e

Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

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San Dimas
MCTA
Legend
Project Boundary
5-Mile Radius
USFWS Critical Habitat
Coastal California gnatcatcher,
Polioptila californica californica
Southwestern willow flycatcher,
Empidonax traillii extimus
Thread-leaved brodiaea, Brodiaea
filifolia
Key Map
Kern County
San
Bernardino
County
Ventura
County
Los Angeles
County
Project
Location
Orange
County
Riverside
County
P a c i f i c
O c e a n
0 0.625 1.25 Miles ¯
Scale: 1:79,200
0 0.6 1.2 Kilometers
USFWS Critical Habitats
Figure 13
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_SanDimas_MCTA_4_4_CritHab_2022_09_29.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, and the GIS user community, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; USFWS Critical Habitats, Dec. 2021; UltraSystems Environmental, Inc., 2022

San Dimas
MCTA
Legend
Project Boundary
5-Mile Radius
Natural Landscape Block
Essential Connectivity Area
Small Natural Areas
Potential Riparian Connections

LINKAGE TYPE, NAME
Choke-point, Puente Chino Hills
! ! Missing Link, San Gabriel River
Linkage Network of the California
Desert
Key Map
Kern County
San
Bernardino
County
Los
Angeles
County
Ventura
County
Project
Location Riverside
P a c i f i c County
O c e a n
Orange
County
¯
0 0.625 1.25 Miles
Scale: 1:79,200
0 0.6 1.2 Kilometers
CDFW Wildlife Corridors
Figure 14
Disclaimer: Representations on this map or illustration are intended only to indicate locations of project parameters reported in the legend. Project parameter information supplied by others (see layer credits) may not have been independently verified for accuracy by UltraSystems Environmental, Inc. This map or illustration should not be used for, and does not replace, final grading plans or other documents that should be professionally certified for development purposes.

Path: \\Gissvr\gis\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_SanDimas_MCTA_4_4_Wildlife_Corridors_2022_03_02.mxd March 02, 2022 Service Layer Credits: Source: Esri, Maxar, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community, Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Esri, HERE, Garmin, (c) OpenStreetMap contributors, and the GIS user community; Spencer, W.D., P. Beier, K. Penrod, K. Winters, C. Paulman, H. Rustigian-Romsos, J. Strittholt, M. Parisi, and A. Pettler. 2010. California Essential Habitat Connectivity Project: A Strategy for Conserving a Connected California. Prepared for California Department of Transportation, California Department of Fish and Game, and Federal Highways Administration; BIOS , 2008-2019; UltraSystems Environmental, Inc., 2022

San Dimas
MCTA
Legend
Project Boundary
5-Mile Radius
County Boundary
Significant Ecological Areas
East San Gabriel Valley
San Dimas Canyon/San Antonio
Wash
San Gabriel Canyon
Key Map
Kern County
San
Bernardino
County Ventura
County
Los Angeles
County
Project
Location
P a c i f i c
O c e a n Riverside
Orange County
County
0 0.625 1.25 Miles ¯
Scale: 1:79,200
0 0.6 1.2 Kilometers
Significant Ecological Areas
(SEAs)
Figure 15
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San Dimas
MCTA 20-0005
Legend
Project Boundary
Project Parcels
Conservation Easement
Open Space
8448-008-050
8448-008-047
24 25
-046 23 08
-0 8448
45 22 08-0
-0 8448
-047 38
-0 8448
21 17
16 26 18 20 8448-008-055 19 Key Map
15 14 8-048 48-03 84
San
Bernardino
County
27 28
29 Los Angeles
County
13 12
Project
Location
Orange
County
Riverside
County 11
30 9
P a c i f i c
O c e a n 10 31 San Diego
County 32
7 33
6 36 ¯
8 1
34 5
35 0
0 175
50 350 Feet
2 3 4 Scale: 1:4,200
100 Meters
Residential Lots and
Associated Assessors Parcel
Numbers (APNs)
Figure 16
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Path: \\gissvr\GIS\Projects\7145_SanDimas_MunicipalCode_ISMND\MXDs\BIO\7145_APN_20221214.mxd Service Layer Credits: Sources: Esri, HERE, Garmin, USGS, Intermap, INCREMENT P, NRCan, Esri Japan, METI, Esri China (Hong Kong), Esri Korea, Esri (Thailand), NGCC, (c) OpenStreetMap contributors, and the GIS User Community, Esri, HERE, Garmin, (c) OpenStreetMap contributors, Source: Esri, Maxar, Earthstar Geographics, and the GIS User Community; UltraSystems Environmental, Inc., 2022.

❖ APPENDICES ❖

APPENDIX B

SPECIAL-STATUS SPECIES POTENTIAL OCCURRENCE DETERMINATION

BSA is Located Within the
Plant Species’ Known: BSA Contains
Potential
Suitable
Scientific Name Common Name
(=Synonym) (=Synonym)
Plant Elevation
Range (feet amsl) Status General Habitat Description in California Potential For Occurrence in the BSA Habitat Elevation
Range
General
Distribution
Listed Endangered, Threatened, Candidate and State Rare Plants: Plants with official status under the federal Endangered Species Act (ESA), the California Endangered Species Act (CESA), and/or the Native Plant Protection Act (NPPA). A species may have other sensitive designations in addition to their federal or state listing.

Lifeform: perennial evergreen shrub Moderate potential to occur. There are some sandy-loam soils in the BSA, which could
potentially create suitable consitions to support
this species. In addition, the BSA contains steep
slopes and contains chaparral habitat.

Berberis nevinii
(=Mahonia
nevinii)
Habitats: two habitat types- alluvial scrub community, chaparral community Soils: alluvial scrub community it grows on sandy and gravelly substrates along the margins of dry washes, chaparral community, it grows on steep, north-facing slopes with coarse soils and rocky slopes Bloom Period: February to June
Nevin’s barberry FE, SE, CRPR: 1B.1 229 – 2,706 Yes Yes Yes Brand’s star
phacelia
(=Brand’s
phacelia)
Lifeform: annual herb No potential to occur. The soils of the project site and the BSA are not sandy. The BSA does not
occur In a sandy wash or dune.

Habitats: open areas in coastal dunes and coastal scrub Soils: sandy openings, sandy benches, dunes, sandy washes, or flood plains of rivers Bloom Period: March to June
Phacelia stellaris
Brodiaea filifolia
FC, CRPR: 1B.1 3 – 1,312 No Yes
Yes
Yes
Yes
Lifeform: perennial bulbiferous herb thread-leaved
brodiaea
(=threadleaf
clusterlily)
Moderate potential to occur. The soils of the
project site are fine and contain some clay. USFWSCritical Habitat for this species is located Habitats: gentle hillsides, valleys, and floodplains in semi-alkaline mudflats, vernal pools, mesic southern needlegrass grasslands, mixed native-nonnative grasslands and alkali grasslands plant communities Soils: clay to fine sand
FT, SE, CRPR: 1B.1 82 – 3,674 Yes
approximately 4.5 miles from the project site. Bloom Period: March to June Sensitive Plants: These plants have no official status under the ESA, the CESA, and/or the NPPA; however they are designated as sensitive or locally important by federal agencies, state agencies, and/or local conservation agencies and organizations.

Low potential to occur. The BSA support Thelypteris
puberula var.
sonorensis
Lifeform: perennial rhizomatous herb
Habitats: meadows and seeps along streams and seepage areas Bloom Period: January to September
Sonoran maiden
fern
marginally suitable habitat (seeps and other wet
areas) required by this species. Drainages in the
BSA are ephemeral.

CRPR: 2B.2 164 – 2,001 Yes
Yes
Yes
Yes
Yes
Yes
Moderate potential to occur. . The soils of the
BSA are somewhat sandy although also contain
significant clay and loam components, and the
sloping topography of the project site could cause
presence of enough water to support this species,
especially at the points of lowest elevation and in
the drainages. In addition, the BSA contails coastal
scrub and cismontane woodlands which create
suitable habitat to support this species.

Lifeform: perennial herb Pseudognaphaliu
m leucocephalum
(=Gnaphalium
Habitats: chaparral, cismontane woodlands, coastal scrub and riparian woodlands; sandy or gravelly benches, dry stream bottoms, canyon bottoms
Soils: sandy and gravelly sites
white rabbittobacco CRPR: 2B.2 0 – 6,888
leucocephalum) Bloom Period: (July) August to November (December) No potential to occur. The BSA does not contain
pinyon-juniper woodlands; a natural community
in which this species is typically associated or
carbonate soils.
chaparral ragwort
(=rayless
Lifeform: annual herb Senecio
aphanactis CRPR: 2B.2 Habitats: rocky limestone slopes and washes in pinyon and juniper woodlands (carbonate) Bloom Period: January to April (May)
49 – 2,624 No Yes Yes
ragwort)

Low potential to occur. The BSA supports
suitable habitat (riparian woodlands) required for
this species. The majority of the documented
observations of this species within the vicinity of
the BSA occur in the Angeles National Forest.

Lifeform: perennial rhizomatous herb
Habitats: mesic canyons of broad leafed upland forests, chaparral, cismontane woodlands, lower montane coniferous forests, and riparian woodlands
Symphyotrichum
greatae (=Aster
greatae)
Greata’s aster CRPR: 1B.3 984 – 6,593 Yes Yes Yes
Bloom Period: June to October
Lifeform: annual herb
Habitats: chaparral and coastal sage scrub often around rock outcrops Soils: dry soils
Moderate potential to occur. The BSA provides
some areas of suitable coastal sage scrub and
chaparral habitat, particularly at Areas 4 & 5, to
support this species.

Lepidium
virginicum var.
robinsonii
Robinson’s pepper- CRPR: 4.3 3 – 2,903 Yes
No
Yes
No
Yes
Yes
grass
Bloom Period: January to July
Lifeform: annual herb
Thysanocarpus
rigidus
Habitats: pinyon and juniper woodlands on dry rocky slopes and ridges of oak and pine woodlands in arid mountain ranges
No potential to occur. The BSA is below the
rigid fringepod CRPR: 1B.2 1,968 – 7,216 known elevation range of this species.

Bloom Period: February to May
Moderate potential to occur. The project area
does not contain coastal dunes, which are habitat
types in which this species is typically found,
However, the project area consists primarily of
Zaca-Apollo soils, which have a significant amount
of clay (Zaca). Soils of the project site are
Lifeform: perennial herb
Habitats: coastal bluff scrub; on coastal dunes; and on ridge tops Soils: clay soils and alkaline low places
Bloom Period: March to October
Atriplex coulteri Coulter’s saltbush CRPR: 1B.2 10 – 1,508 Yes Yes Yes consistent with those preferred by this species.

Lifeform: annual rhizomatous herb
Habitats: meadows and seeps (sometimes alkaline) and alluvial riparian scrub Soils: silty loam and alkaline soils
Wetlands, Drainages, or Seeps: Yes
No potential to occur. The BSA does not support
suitable habitat (wetlands and seeps) required for
this species. Drainages in the BSA are ephemeral.
lucky morning- Calystegia felix CRPR: 3.1
CRPR: 2B.2
CRPR: 1B.2
98 - 705
49 - 918
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
glory
Bloom Period: March to September
Cuscuta
obtusiflora var.
glandulosa
Lifeform: annual parasitic vine
Habitats: freshwater marshes and swamps
Bloom Period: July to October
No potential to occur. The BSA does not contain
marshes or swamps that would be necessary to
support this species.

Peruvian dodder
Lifeform: perennial herb
Habitats: steep cliff faces
Soils: granitic soils within chaparral
Bloom Period: April to July
No potential to occur. The BSA does not support
suitable habitat (cliff faces, chaparral) required
for this species.

Dudleya cymosa San Gabriel River 902 – 1,499 ssp. crebrifolia dudleya Moderate potential to occur. The BSA contains
suitable clay soils to support this species,
particularly in Area 5 of the plannng area. The BSA
contains some vegetated openings in chaparral,
therefore providing suitable habitat for this
species.

Lifeform: perennial herb
Habitats: barrens, rocky places, and ridgelines as well as thinly vegetated openings in chaparral, valley and foothill grasslands, and coastal sage scrub
Soils: clay soils, heavy soils, often clay
Dudleya
multicaulis
many-stemmed
dudleya CRPR: 1B.2
CRPR: 2B.2
49 – 2,591 Yes Yes
Yes
Yes
Yes
Bloom Period: April to July
salt spring
checkerbloom
(=mountain
sidalcea)
Lifeform: perennial herb No potential to occur. The BSA does not support suitable habitat (alkali playas, brackish marshes,
wetlands) required for this species.

Sidalcea
neomexicana
Habitats: alkaline, mesic sites in chaparral, coastal scrub, lower montane coniferous forests, Mojavean desert scrub, alkali playas, and brackish marshes. Usually in wetlands.

Bloom Period: March to June
49 – 5,018 No
Low potential to occur. The BSA contains
chaparral, coastal scrub, and cismontane
woodlands, both of which are suitable habitat
types for this species. However, the soils of the
project site and the BSA are fine-loamy and clay
soils; the BSA does not contain the sandy, rocky
soils necessary to support this species and
therefore this species was determined to have a
low potential to occur.

Lifeform: annual herb
Chorizanthe
parryi var. parryi
Parry’s
spineflower
Habitats: coastal scrub, chaparral, cismontane woodlands, and valley and foothill grasslands Soils: sandy or rocky soils
Bloom Period: April to June
CRPR: 1B.1 902 – 4,002 Yes Yes Yes

Horkelia cuneata
var. puberula
(=Horkelia
Moderate potential to occur. There is some
suitable cismontane woodland, coastal scrub, and
chaparral habitat in the BSA. The soils over most
of the BSA contan sand components that could
create suitable conditions for this species.

Lifeform: perennial herb
Habitats: maritime chaparral, coastal scrub, and cismontane woodlands Soils: sandy or gravelly sites mesa horkelia CRPR: 1B.1 230 – 2,657 Yes Yes Yes Yes
cuneata ssp.
puperula) Bloom Period: February to September
Lifeform: perennial deciduous shrub
Habitats: broad leafed upland forests, chaparral, cismontane woodlands, and lower montane coniferous forests
No potential to occur. The BSA is at a lowere
elevation than the known elevation range for this
species..

San Gabriel
bedstraw Galium grande CRPR: 1B.2 1,394 – 4,920 No No
Bloom Period: January to July
Lifeform: perennial rhizomatous herb
Habitats: meadows and seeps and alkaline or freshwater marshes and swamps Wetlands, Drainages, or Seeps: Yes
No potential to occur. The BSA does not support
suitable habitat (meadows and seeps, marshes, or
swamps) required for this species..

Cladium
californicum
California
sawgrass
CRPR: 2B.2
CRPR: 1B.2
CRPR: 4.2
197 – 2,837
1,050 – 3,280
328 – 5,576
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Bloom Period: June to September
Calochortus
clavatus var.
gracilis
Lifeform: perennial bulbiferous herb
Habitats: shaded foothill canyons often on grassy slopes within other habitat, chaparral and coastal scrub Bloom Period: March to June (November)
slender mariposa
lily
Moderate potential to occur. The project area
contains some grassy slopes and shaded areas.

Lifeform: perennial bulbiferous herb
Habitats: chaparral, cismontane woodlands, coastal scrub, valley and foothill grasslands, and lower montane coniferous forests
Soils: dry, rocky slopes and soils
Bloom Period: May to July
Moderate potential to occur. The project site
contains some foothill grasslands that create lowquality suitable habitat for this species. The majority of the soils in the BSA are well-drained
dry soils.

Calochortus
plummerae
Plummer’s
mariposa lily
Moderate potential to occur. There are recent
observations of this species within a 2-mile radius
of the project site. The BSA contains slopes and
chaparral habitat that would create suitable
conditions to support this species.
intermediate
mariposa lily
(=Weeds
Calochortus
weedii var.
intermedius
Lifeform: perennial bulbiferous herb
Habitats: dry, rocky open slopes and rock outcrops in coastal scrub and chaparral Bloom Period: May to July
CRPR: 1B.2
CRPR: 2B.1
344 – 2,804 Yes
Yes
Yes
Yes
Yes
Yes
mariposa lily)
Lifeform: perennial rhizomatous herb
Habitats: mesic sites within chaparral, coastal scrub, Mojavean desert scrub, meadows and seeps (often alkali), and riparian scrub
Moderate potential to occur. The BSA contains
some areas of suitable habitat to support this
species including chaparral and coastal scrub.

Imperata
brevifolia California satintail 0 – 3,985
Wetlands, Drainages, or Seeps: Yes
Bloom Period: September to May
Legend and Notes
Federal Endangered Species Act (ESA) Listing Codes: the ESA is administered by the USFWS and NMFS. The USFWS has primary responsibility for terrestrial and freshwater organisms, while the responsibilities of NMFS are mainly marine wildlife such as whales and anadromous fish such as salmon. For the purposes of the ESA, Congress defined species to include subspecies, varieties, and, for vertebrates, distinct population segments. The official federal listing of Endangered and Threatened plants is published in 50 CFR § 17.12. •ꢀFE = federally listed as endangered: any species of plant or animal that is in danger of extinction throughout all or a significant portion of their range. •ꢀFC = federal candidate for listing: candidate species are plants and animals for which the USFWS has sufficient information on their biological status and threats to propose them for listing as endangered or threatened under the ESA, but for which development of a proposed listing regulation is precluded by higher priority listing actions to address species in greater need. A proposed regulation has not yet been published in the Federal Register for these species.

California Endangered Species Act (CESA) and California Native Plant Protection Act (NPPA) Listing Codes: tth e CESA and NPPA are administered by CDFW. The official listing of Plants of California Declared to Be Endangered, Threatened or Rare is contained in the California Code of Regulations, Title 14, § 670.2. Species, subspecies and varieties of California native plants are declared to be endangered, threatened as defined by § 2062 and § 2067 of the Fish and Game Code or rare as defined by § 1901 of the Fish and Game Code. •ꢀSE = state-listed as endangered: "endangered species" means a native species or subspecies of a bird, mammal, fish, amphibian, reptile, or plant which is in serious danger of becoming extinct throughout all, or a significant portion, of its range due to one or more causes, including loss of habitat, change in habitat, overexploitation, predation, competition, or disease (Fish and Game Code § 2062).

California Rare Plant Ranks (Formerly known as CNPS Lists): the CNPS is a statewide, nonprofit organization that maintains, with CDFW, an Inventory of Rare and Endangered Plants of California. In the spring of 2011, CNPS and CDFW officially changed the name “CNPS List” or “CNPS Ranks” to “California Rare Plant Rank” (or CPRP). This was done to reduce confusion over the fact that CNPS and CDFW jointly manage the Rare Plant Status Review Groups and the rank assignments are the product of a collaborative effort and not solely a CNPS assignment. • CRPR: 1A = California Rare Plant Rank 1A - plants presumed extirpated in California and either rare or extinct elsewhere: the plants with a CRPA of 1A are presumed extirpated because they have not been seen or collected in the wild in California for many years. This rank includes plants that are both presumed extinct as well as those plants which are presumed extirpated in California. All of the plants constituting CRPR 1A meet the definitions of § 2062 and § 2067 (CESA) of the Fish and Game Code, and are eligible for state listing. Should these taxa be rediscovered, it is mandatory that they be fully considered during preparation of environmental documents relating to CEQA. •ꢀCRPR 1B = California Rare Plant Rank 1B - plants rare, threatened, or endangered in California and elsewhere: plants with a CRPR of 1B are rare throughout their range with the majority of them endemic to California. Most of the plants that are ranked 1B have declined significantly over the last century. All of the plants constituting CRPR 1B meet the definitions of § 2062 and § 2067 (CESA) of the Fish and Game Code, and are eligible for state listing. It is mandatory that they be fully considered during preparation of environmental documents relating to CEQA. •ꢀCRPR 2A = California Rare Plant Rank 2A - plants presumed extirpated in California, but more common elsewhere: the plant taxa of CRPR 2A are presumed extirpated because they have not been observed or documented in California for many years. This list includes only those plant taxa that are presumed extirpated in California, but more common elsewhere in their range. All of the plants on List 2A meet the definitions of § 2062 and § 2067 (CESA) of the Fish and Game Code, and are eligible for state listing. Should these taxa be rediscovered, it is mandatory that they be fully considered during preparation of environmental documents relating to CEQA. •ꢀCRPR 2B = California Rare Plant Rank 2B - plants rare, threatened, or endangered in California, but more common elsewhere: except for being common beyond the boundaries of California, plants with a CRPR of 2B would have been ranked 1B. From the federal perspective, plants common in other states or countries are not eligible for consideration under the provisions of the ESA. All of the plants constituting CRPR 2B meet the definitions of § 2062 and § 2067 (CESA) of the Fish and Game Code, and are eligible for state listing. It is mandatory that they be fully considered during preparation of environmental documents relating to CEQA. •ꢀCRPR 3 = California Rare Plant Rank 3 - plants about which more information is needed - a review list: the plants that comprise CRPR 3 are united by one common theme – CNPS and CDFW lack the necessary information to assign them to one of the other ranks or to reject them. Nearly all of the plants constituting CRPR 3 are taxonomically problematic. Some of the plants constituting CRPR 3 meet the definitions of § 2062 and § 2067 (CESA) of the Fish and Game Code, and are eligible for state listing. CNPS strongly recommends that CRPR 3 plants be evaluated for consideration during preparation of environmental documents relating to CEQA. •ꢀCRPR 4 = California Rare Plant Rank 4 - plants of limited distribution - a watch list: the plants in this category are of limited distribution or infrequent throughout a broader area in California. While CNPS and CDFW cannot call these plants "rare" from a statewide perspective, they are uncommon enough that their status should be monitored regularly. Should the degree of endangerment or rarity of a CRPR 4 plant change, CNPS and CDFW will transfer it to a more appropriate rank. Some of the plants constituting CRPR 4 meet the definitions of § 2062 and § 2067 (CESA) of the Fish and Game Code, and few, if any, are eligible for state listing. Nevertheless, many of them are significant locally, and CNPS strongly recommends that CRPR 4 plants be evaluated for consideration during preparation of environmental documents relating to CEQA. •ꢀConsidered But Rejected = plants that have been considered for inclusion into the CNPS Inventory, but were not included for various reasons.

California Native Plant Society (CNPS) Threat Ranks: The CNPS Threat Rank is an extension added onto the California Rare Plant Rank (CRPR) (as a decimal code) and designates the level of threats by a 1 to 3 ranking with 1 being the most threatened and 3 being the least threatened. A Threat Rank is present for all CRPR 1B's, 2B's, 4's, and the majority of CRPR 3's. CRPR 4 plants are seldom assigned a Threat Rank of .1, as they generally have large enough populations to not have significant threats to their continued existence in California; however, certain conditions exist to make the plant a species of concern and hence be assigned a CRPR. In addition, all CRPR 1A and 2A (presumed extirpated in California), and some CRPR 3 (need more information) plants, which lack threat information, do not have a Threat Rank extension. •ꢀ.1 = seriously threatened in California (over 80% of occurrences threatened / high degree and immediacy of threat) •ꢀ.2 = moderately threatened in California (20-80% occurrences threatened / moderate degree and immediacy of threat) •ꢀ.3 = not very threatened in California (<20% of occurrences threatened / low degree and immediacy of threat or no current threats known) Notes:

The BSA contains approximate elevations ranging from 680 to 960 feet above mean sea level.

Yes = the BSA is located within the plant species’ known distribution, elevation range, and/or the BSA contains suitable habitats and/or soils to support the plant species. The plant species has a potential to occur within the BSA. Further evaluation is needed.

No = the BSA is located outside the plant species’ known distribution, elevation range, and/or the BSA lacks suitable habitats and/or soils to support the plant species. It is highly unlikely for the plant species to have a potential to occur within the BSA. No further evaluation is needed.

Present = observed within the BSA during surveys.

A CNPS elevation range is provided for each taxon in feet. The stated range is for the California portion of a plant's range only (if the taxon also occurs outside the state). These CNPS elevation range data are accumulated from literature, herbarium specimens, and field survey information.

Resources
•ꢀTheꢀJepsonꢀDesertꢀManualꢀ(Baldwinꢀetꢀal.,ꢀ2002);
•ꢀTheꢀJepsonꢀManual:ꢀVascularꢀPlantsꢀofꢀCalifornia,ꢀsecondꢀeditionꢀ(Baldwinꢀetꢀal.,ꢀ2012); •ꢀBLMꢀSpecialꢀStatusꢀPlantsꢀunderꢀtheꢀjurisdictionꢀofꢀtheꢀCaliforniaꢀStateꢀOfficeꢀasꢀofꢀOctoberꢀ30,ꢀ2013ꢀ(BLM,ꢀ2013); •ꢀTheꢀFinalꢀEnvironmentalꢀImpactꢀReportꢀandꢀStatementꢀ(FinalꢀEIR/S)ꢀforꢀtheꢀWestꢀMojaveꢀPlanꢀ(BLM,ꢀ2005);

Locate
Withi
Specie
Distribu
and/o
Scientific
Name
(=Synonym)
Common Name
(=Synonym)
Status General Habitat Descriptions in
California
Elevati
Range
known
Listed Endangered, Threatened, and Candidate Wildlife: Wildlife with official status under the federal Endangered Species Act (ESA) and/or the California Endangered Species Act (CESA). A species may have other sensitive designations in addition to their federal or state listing.

Listed
FC: California overwintering Habitats: wind-protected tree groves (eucalyptus [ Invertebrates Eucalyptus sp.], Monterey pine [Pinus radiata ], cypress), with nectar and water sources Danaus plexippus pop. 1
Catostomus
santaanae
monarch
butterfly
Santa Ana
sucker
Yes
Yes
Yes
No
Present. This species was observed in the BSA during
field surveys. populatio
n
nearby
Listed
Habitats: small, shallow streams, less than 25 feet in width, with currents ranging from swift in the canyons to Fish sluggish in the bottom lands,
permanent streams in water ranging in depth from a few centimeters to a meter or more Soils: gravel, rubble, and boulders with growths of filamentous algae, sand/mud substrates Characteristics: most abundant where the water is cool, clean, and clear No potential to occur. The BSA does not contain suitable aquatic habitats to support fish FT[2],
SSC
species.

Listed Amphibians
Habitats: sandy riverbanks, streams, washes, and arroyos, breeds in and near streams Characteristics: nearby sandy terraces, dampened in places by capillary action, and with some scattered vegetation providing surface
sheltering and burrowing sites and foraging areas
Low potential to occur. The BSA does contain some suitable riparian, oak, and scrub habitats
to support this toad. However, thie BSA generally lacks adequate water sources with sandy
river banks that would create a suitable breeding habitat for this species.

Anaxyrus
californicus
(=Bufo
californicus)
arroyo
toad
FE, SSC Yes No
Listed
Habitats: large, open areas with abundant prey in association with suitable nest trees, native grasslands or Birds lightly grazed pastures and
croplands, open deserts, sparse shrub lands
Characteristics: nest in juniper trees of juniper-sage flats not near riparian zones Habitats: high coastal marshes to freshwater marshes along the lower Colorado River, pickleweed, bulrushes, and matted salt grass
(Distichlis spicata) and other marsh vegetation
Low potential to occur. While there are no suitable nesting sites for this species in the BSA, this
species may utilize the BSA for passage or foraging because the BSA does support suitable
habitat for many of the prey species of this raptor.

ST, BCC, Season of
Concern:
nesting
Buteo
swainsoni
Swainson's
hawk
California black
rail
Yes
Yes
Yes
Yes
Yes
No Laterallus
jamaicensis
coturniculus
Not expected to occur. The BSA does not contain marsh vegetation or marshland habitat to ST, fully protected,
BCC
support this
species. Characteristics: they use areas of shallow water with relatively stable water levels and flat shoreline FE, SE, Season of Concern: Habitats: dense riparian tree and shrub communities associated with rivers, swamps, and other wetlands, including lakes, surface water,
nesting saturated soil, or herbaceous wetland plants present during the early summer months; woody riparian vegetation is present
Moderate potential to occur. The BSA contains riparian tree and shrub communities that Empidonax traillii
extimus
Vireo bellii pusillus
Riparia riparia
southwestern willow
flycatcher
least Bell’s vireo
Yes
No
create suitable habitat to support this
species.

FE, SE Season of Concern: Habitats: dry, intermittent streams, on the desert slopes mesquite (Prosopis sp.) and sandbar willow in canyon locations, willow-dominated
Moderate potential to occur. The BSA contains suitable habitat to support nesting riverine riparian habitats with well-developed overstories, understories, and low densities of this species such as aquatic and herbaceous cover
riparian/riverine areas in a canyon
setting. Habitats: naturally eroding habitats of major lowland river systems, sandy, vertical bluffs or riverbanks Characteristics: birds build nests within two to three-foot deep burrows that are dug perpendicularly into near vertical earthen banks
along streams, coastal bluffs, and sand and gravel pits ST, Season of
Concern:
nesting
Not expected to occur. The BSA does not contain vertical bluffs or riverbanks/lowland river bank swallow
coastal California
gnatcatcher
tricolored blackbird
Yes
Yes
Yes
No
Yes
No
systems to support this
species. Polioptila
californica
californica
Moderate potential to occur. The BSA contains areas with suitable coastal sage scrub to FT, SSC Habitats: small, non-migratory, permanent resident of coastal sage scrub, small, non-migratory, permanent resident of coastal sage scrub
support this
Habitats: fresh water, preferably in emergent wetland with tall, dense cattails (Typha sp.) or tules, species. natural grassland, woodland, or
agricultural cropland
Characteristics: species is not migratory, but is nomadic and highly colonial Not expected to occur. The BSA generally lacks suitable aquatic sites and suitable vegetation to Agelaius
tricolor

ST, SSC , BCC,
Season of
Concern: nesting
colony
support this
species. Listed Mammals
Habitats: Riversidean alluvial fan sage scrub, river and stream terraces, flood plains, and along washes with nearby sage scrub Soil: sandy loam soils, alluvial fans
Dipodomys
merriami
parvus
Not expected to occur. The BSA does not support suitable habitat (alluvial fan sage scrub, river San Bernardino
kangaroo rat
FE, SSC Yes No
and stream terraces, floodplains, washes) required
for the species..

Sensitive Wildlife: These animals have no official status under the ESA and/or the CESA; however they are designated as sensitive or locally important by federal agencies, state agencies, and/or local conservation agencies and organizations
Sensitive
Habitats: grasslands and shrublands. Hotter and drier environment than other bumblebee species. Invertebrates Prefers milkweeds, dusty maidens, lupines, medics, phacelias, sages, clarkias, poppies, and wild buckwheats: This species occurs primarily in California, including the
Mediterranean region, Pacific Coast, Western Desert, Great Valley, and adjacent foothills through most of southwestern California. It has
also been documented in southwest Nevada, near the California border.

Moderate potential to occur. The BSA contains suitable shrublands with buckwheat and other Bombus
crotchii
Crotch bumble
bee
SSC Yes
Yes
Yes
No
suitable plants that create favorable conditions for
this species.

Diplectrona
californica
California diplectronan
caddisfly
Special Animals
List
Habitats: No information has been published on the larva of this species, but other larvae in the genus live in fast-flowing, cool streams
No potential to occur. The BSA does not contain suitable aquatic breeding sites for this species.

Sensitive
Fish
No potential to occur. The BSA does not contain suitable aquatic habitats to support fish Gila
orcuttii
arroyo
chub
SSC
SSC
Habitats: slow-moving or backwater sections of warm to cool (10-24 C) streams with mud or sand substrates
Yes
Yes
No
No
species.

Sensitive
Habitats: Stream or river frog of woodlands, chaparral, and forests, rocky streams in a variety of habitats, Amphibians including valley-foothill
hardwood, valley-foothill hardwood-conifer, valley-foothill riparian, Ponderosa pine (Pinus ponderosa), mixed conifer, coastal scrub, mixed
chaparral, and wet meadow types
Not expected to occur. The BSA does not contain suitable aquatic breeding habitats to support Rana
boylii
foothill yellow-legged
frog
this species. This frog requires a permanent water source, which is not Characteristics: foothill yellow-legged frogs are infrequent or absent in habitats where introduced present in the BSA. aquatic predators
Habitats: coastal sage scrub, open chaparral, pine-oak woodlands and grassland habitats, grasslands with vernal pools or mixed grassland/coastal sage scrub areas
No potential to occur. The BSA dows not supports suitable aquatic breeding sites to support Spea
hammondii
western
spadefoot
SSC
SSC
Yes
Yes
No
No
this toad. Characteristics: upland habitats adjacent to potential breeding sites in burrows approximating 1 meter in depth Ensatina
eschscholtzii
klauberi
No potential to occur. The BSA does not support suitable habitat (conifer woodlands, heavily large-blotched
salamander
Habitats: conifer and woodland associations; found in leaf litter, decaying logs, and shrubs in heavily forested areas.
forested areas) required for this
species. Habitats: terrestrial habitats (grassland, woodland and forest), but breeds in ponds, reservoirs, and slow moving streams within coastal
drainages
Characteristics: can migrate over 1 km to breeding areas No potential to occur. The BSA does not support suitable breeding habitat for this species. The
nearest suitable breeding habitat are seperated from the BSA by suburban streets and a
freeway, which would be avoided as movement corridors by this species.

SSC (Monterey County
and
south)
Taricha
torosa
Coast Range newt (=California
newt)
Yes
Yes
Yes
No
No
Sensitive
Actinemys Reptiles
marmorata
(=Actinemys
marmorata
marmorata)
(=Emys
marmorata)
northern western pond turtle
(=northern western
pond turtle)
Habitats: stagnant or slow-moving water in aquatic habitats, ponds, lakes, rivers, streams, creeks, marshes, and irrigation ditches, with
abundant vegetation, and either rocky or muddy bottoms, in woodland, forest, and grassland No potential to occur. The BSA does not support suitable aquatic habitat required for this SSC
SSC
species.

Habitats: occurs in many habitats with sandy soil. Coastal sand dunes and a variety of interior habitats, including sandy washes and alluvial
fans. Population occurs in Piute and Tehachapi mountains at elevation of 400-900 m in oak woodland and mixed conifer forest
Low potential to occur. The BSA contains some sandy-loam soils and oak woodlands which Anniella
stebbinsi
southern California legless
lizard
Yes could create suitable habitat for this
species.

Phrynosoma
blainvilli
(=Phrynosoma
coronatum)
(=Phrynosoma
coronatum
blainvillei)
Habitats: wide variety of vegetation types including coastal sage scrub, annual grassland, chaparral, oak woodland, riparian woodland and
coniferous forest, habitats are loose, fine soils with a high sand fraction; an abundance of native ants or other insects; and open areas with
limited overstory for basking and low
Moderate potential to occur. The project site does contain some coastal scrub and oak
woodland habitats to support this species. The soils in the BSA are primarily sandy-loam and
clay; however there are some areas in the BSA that provide gravelly and loose soils.

Blainville’s horned lizard (=coast
horned lizard) SSC Yes Yes
(=San Diego horned
lizard)
Aspidoscelis tigris
stejnegeri
(=Cnemidophorus
tigris
multiscutatus)
Habitats: variety of ecosystems, primarily hot and dry open areas with sparse foliage such as deserts, chaparral and semiarid, found in open,
often rocky areas with little vegetation or sunny microhabitats within shrub or grassland Characteristics: ground may be firm soil, sandy, or rocky No potential to occur. The BSA contains vegetation cover considered too dense to be San Diegan whiptail (=coastal whiptail)
California glossy snake
SSC
SSC
Yes
Yes
No desireable by this species. The BSA does not offer optimal open, rocky areas.

Habitats: all ecological zones, from the coast to the mountain foothills, light shrubby to barren desert, sagebrush flats, grassland, chaparralcovered slopes, and woodlands Characteristics: refugia takes the form of mammal burrows, rock outcrops, and to a lesser extent Moderate potential to occur. The BSA contains oak woodlands, which create suitable habitat
to support this species. Area 5 in particular offers habitat that would be considered favorable to
this species.

Arizona
elegans
occidentalis
Yes

Locate
Withi
Specie
Distribu
and/o
Scientific
Name
(=Synonym)
Common Name
(=Synonym)
Status General Habitat Descriptions in
California
Elevati
Range
known
Habitats: desert, through dense chaparral in the foothills (it avoids the mountains above around 4,000 feet), to warm inland mesas and
valleys, all the way to the cool ocean shore
Characteristics: need rodent burrows, cracks in rocks or surface cover objects Habitats: aquatic and it is rarely found far from water, permanent or semi-permanent bodies of freshwater and adjacent riparian habitat,
oak woodlands, chaparral and coniferous forests on the coastal slopes of mountains and foothills to sea level Sensitive Birds
Low potential to occur. This species typically prefers rocky, sandy soils.

The soils in the BSA
are sandy-loam and clay. This species is adaptive to a variety of habitat types. While the BSA
could potentially support this species, the soils types are not optimal for this species.

No potential to occur. The BSA does not support suitable aquatic habitat required for this
species.

Crotalus
ruber
red diamond
rattlesnake
two-striped garter
snake
SSC
SSC
Yes
Yes
Yes
Thamnophis No
hammondii
Habitats: undisturbed, open grasslands, meadows, emergent wetlands, farmlands, crops, pastures, and other cultivated habitats
Characteristics: adjacent to their nesting woodland must be open foraging grasslands Moderate potential to occur. The BSA supports suitable nesting and foraging habitat required Elanus
leucurus
white-tailed
kite
fully
protected
Yes Yes
for this
species.

WL, Season of
Concern:
nesting
Habitats: broken woodland and habitat edges
Characteristics: tolerant of human activities near the nest and is seen more often nesting in urban/residential areas
Accipiter
cooperii
Aquila
chrysaetos
Cooper's
hawk
golden eagle
Yes
Yes
Yes
Yes
Present. This species was observed in the BSA during
field surveys.
fully protected, WL, BCC, Habitats: mountainous canyon land, rimrock terrain of open desert and grassland areas, open rolling foothills of grasslands, oak savannas,
Season of Concern: nesting oak and juniper woodlands, chaparral, mountain areas, and desert, open habitats including grasslands, deserts, savannahs, and shrublands
Low potential to occur. This species occurs in a variety of habitat types, and the BSA and
project site could offer feeding habitat due to the presence of grasslands, rolling slopes, and
chaparral.
and
wintering
Characteristics: hilly or mountainous country, deeply cut canyons rising to open mountain slopes and crags are ideal habitat Habitats: open, dry, flat ground or low rolling hills with sparse vegetation and available burrows; however, this species may be found in a
viariety of habitats.

Characteristics: if no burrows are available, may dig their own burrows or utelize pipes, cracks in debris piles, and other artificial
SSC, BCC, Season of
Concern: burrowing
sites and
some wintering sites
Low potential to occur. The BSA supports some suitable habitat required to support this Athene
cunicularia
burrowing
owl
Yes Yes
species.
structures
.Habitats: forests and woodlands with large old trees and snags, high basal areas of trees and snags, dense canopies (>70% canopy closure),
multiple canopy layers, and downed woody debris
Characteristics: low elevations, it uses coastal oak woodland, valley foothill riparian, and redwood (Sequoia sempervirens) forests
Habitats: conifer, oak, riparian, pinyon-juniper, and desert woodlands Characteristics: long-eared owl appears to be more associated with forest edge habitat Habitats: low-elevation oak (any species) woodlands, especially where mixed with California sycamore (Platanus racemosa) and deciduous
riparian habitats
Low potential to occur. The BSA contains suitable oak woodlands to support this species,
however this species prefers vegetative cover that is highly dense and multilayered. Therefore, this species is determiend to have only a low potential to occur in the BSA.

Low potential to occur. The BSA provides suitable oak woodland habitat to support this
species.

Strix
occidentalis
occidentalis
California spotted
owl
long-eared owl
SSC, BCC Yes
Yes
Yes
Yes
Yes
Yes
SSC Season of
Concern:
nesting
Asio otus
Dryobates nuttallii
(=
Picoides
nuttallii)
Nuttall's
woodpecker
BCC Present. This species was observed in the BSA during Characteristics: nests are located mostly in field surveys. riparian habitat Habitats: Alaska and Canada, Merlins winter in California from September to May , annual grasslands to open ponderosa pine and montane
hardwood-conifer habitats, and coastlines, savannahs, woodlands, lakes, and wetlands Characteristics: dense tree stands may be used for cover and are frequently close to bodies of water Moderate potential to occur. There are recent (<15 years) observations of this species within
a 2-mile radius of the project site. The project also offers some suitable nesting woodland
habitat. The trees with dense canopies on-site could create a suitable habitat for this species.

Falco
columbarius
merlin WL Yes
Yes
Yes
No Habitats: grasslands along the coast and deserts near sea level to alpine dwarf-shrub habitat above treeline
Characteristics: birds forage on the ground in either bare areas Not expected to occur. The BSA does not contain suitable open habitats with short vegetation Eremophila alpestris
actia
California horned
lark
WL to support breeding or foraging California
horned larks.

Campylorhynch
us
brunneicapillu
s
sandiegensis
Habitats: coastal sage scrub plant community in which cacti are prominent
Characteristics: usually absent from areas where only low, sprawling cacti grow
Moderate potential to occur. The BSA does contain suitable coastal sage scrub and coastal
prickly pear scrub habitats with suitable nesting cactus vegetation to support this species.
coastal cactus wren (=San Diego
cactus wren)
yellow warbler
BCC Yes
Yes
Yes
Yes
Habitats: deciduous trees of the riparian woodland from coastal desert woodlands to the Sierra Nevada – willows (Salix sp.), cottonwoods
(Populus sp.), aspens (Populus sp.), California sycamores (Platanus racemosa ), and alders (Alnus sp.) Characteristics: nests are deep cups, placed in an upright fork in a deciduous sapling or shrub, typically 2 to 16 feet high
Moderate potential to occur. The BSA does contain some suitable breeding and foraging
habitats to support this species. Yellow warblers occur principally as a migrant and summer
resident in California from late March through early October and breeds from April to late July.

Setophaga
petechia
(=Dendroica
petechia)

SSC, BCC
Habitats: dense riparian thickets of willows, vines, and brush associated with streams and other wetland habitats
Characteristics: nest is an open cup placed in dense shrubs or thickets within 3 to 8 feet above ground along a stream or river
No potential to occur. The BSA does not support suitable nesting habitat (riparian thickets Icteria
virens
yellow-breasted
chat
SSC Yes No
associated with streams or wetlands) required for
this species.

Habitats: dry, steep sloping land and hillsides with a moderate density of low, scattered shrubs, coastal sage scrub, interspersed with
grasses and forbs and occasional rock outcrops for song perches Aimophila
ruficeps
canescens
Moderate potential to occur. The BSA contains steep slopes and coastal sage scrub which southern California rufous-crowned sparrow
northwestern San Diego pocket
mouse
WL
SSC
Yes
Yes
Yes
No
create suitable conditions for this
species. Characteristics: nests are placed in small depressions on the ground Sensitive
Habitats: open, sandy areas of both the Upper and Lower Sonoran life-zones of southwestern California Mammals and northern Baja California
Characteristics: grassland and open sage scrub vegetation with sandy-loam to loam soils Not expected to occur. The BSA does not provide sufficient open sandy areas to support this Chaetodipus fallax
fallax
species.

Habitats: low-lying desert areas of southern California, desert riparian, desert wash, desert scrub, desert succulent shrub, alkali desert
scrub, palm oasis, conifer and deciduous woodlands, coastal scrub, annual and perennial grassslands, chaparral, urban. Roosts in crevices in
cliff faces, high buildings, trees, and tunnels
Moderate potential to occur. The BSA provides suitable woodland and coastal scrub habitat Eumops perotis
californicus
western mastiff
bat
SSC,
WBWG:H
Yes Yes
toupport this
Characteristics: bats often are found in species.
large groups Habitats: pinyon-juniper woodlands, desert scrub, desert succulent shrub, desert riparian, desert wash, alkali desert scrub, Joshua tree,
chaparral, and palm oasis
Characteristics: prefer rock crevices in cliffs as roosting sites No potential to occur. The BSA does not support suitable desert habitat required for this Nyctinomops
femorosaccus
Nyctinomops
macrotis
pocketed free-tailed
bat
big free-tailed bat
SSC Yes
Yes
No
species.

Habitats: rugged, rocky habitats in arid
landscapes, located in a variety of plant associations including desert shrub, woodlands, and evergreen forests. This bat roosts mainly in the crevices of cliff
rocks although may roost in buildings, caves, and tree cavities. Characteristics:
appears to be associated with lowlands primarily below 5,900 ft in the southwestern U.S.

Habitats: near open grassy areas in coniferous and deciduous forest or near lakes, open habitats or habitat mosaics, with access to trees for
cover and open areas or habitat edges for feeding
Characteristics: winter roosts include sides of buildings and tree trunks Habitats: valley foothill riparian, desert riparian, desert wash, and palm oasis habitats Characteristics: occurs year-round in California
Low potential to occur. The BSA provides suitable woodland and coastal scrub habitat SSC,
WBWG:MH
Yes
required to support this
species.

Moderate potential to occur.The BSA provides suitable woodland and coastal scrub habitat to Lasiurus
cinereus
Lasiurus
xanthinus
hoary bat WBWG:M Yes
Yes
Yes
Yes
support this
species. Low potential to occur. The BSA supports some suitable habitat (valley foothill riparian)
required for this species.
western yellow
bat
SSC,
WBWG:H Moderate potential to occur in the BSA for foraging. The BSA is located within this bat’s
distribution and contains suitable grassland, shrubland, and woodland habitats; however they
are most common in deserts, preferring areas of open, dry habitats, with rocky areas for
roosting and water nearby.

Habitats: variety of habitats is occupied by pallid bats, including deserts, grasslands, shrublands, woodlands, and forests form sea level up
through mixed conifer forests
Characteristics: night roosts may be in more open sites, such as porches and open buildings Antrozous
pallidus
pallid bat SSC Yes Yes
Protected by California
Fish
and Game Code §§
4800 –
4810
Habitats: desert scrub, chaparral, swamps, and forests
Characteristics: use rocky areas, cliffs, and ledges that provide cover within open woodlands and chaparral
Moderate potntial to occur. The BSA contains suitable scrub and woodland habitats and prey Puma
concolor
Taxidea
taxus
mountain lion
(=cougar)
American badger
Yes
Yes
Yes
Yes
items. Mountain lions are highly mobile and may pass through or hunt within the BSA. Habitats: Most abundant in drier open stages of most shrub, forest, and herbaceous habitats with friable soils. Required sufficient foor
sources (e.g., burrowing rodents).

Characteristics: requirements - sufficient food, friable soils, and relatively open, uncultivated ground Not expected to occur. The BSA contains marginally suitable habitat for this species; however, SSC the BSA may not provide sufficient food sources for multiple individuals. Legend and
Notes