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1 E
E
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4 E
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E
E
Grading Area – 20 feet
beyond
35% Impact Area Limit
28E
E
E
E
E
E
E
E
E
E
E
E
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E Remainder of
Parcel 13
E E E
E
E
E
E
E
E
E
E
E
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E
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E
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E
E
Coastal Sage Scrub
California Sagebrush Scrub
(Disturbed)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
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29E
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E
E
E
E
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E
California Buckwheat
Scrub
California Buckwheat Scrub (Disturbed)
California Sagebrush - California
Buckwheat Scrub
California Sagebrush - Black Sage Scrub
Coast Prickly Pear Scrub
E 12 E
E
E
E
E
E
E
E
E
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E30E
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Native
Woodland 3
E1 California Walnut
Groves E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
California Walnut Groves
(Disturbed)
Coast Live Oak Woodland
(Disturbed)
E E 11E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Non-Native
Woodland
Pepper Tree
Groves
10 Eucalyptus Groves Non-Native
9 Herbaceous E
E Upland Mustards or Star-thistle
Fields
E
E
E
E
E
Upland Mustards or Star-thistle Fields
(Mowed)
Developed Areas
Developed/Ornamental
8 ²
0 0
87.5 25
175
Feet
50 7 Meters Scale: 1:2,100
Data Source: Vegetation map developed by
UltraSystems (2022)
and updated by Psomas
(2023)
Aerial Source: Nearmap
2023
Project Impacts – Vegetation
Types and Other
Areas
Figure 4.4-5C (Rev: 01/05/2024 PLO)
R:\Projects\SAN04\3SAN040200\Graphics\Bio_NMD\ex_ProjectImpacts_VegTypes_B-D.pdf
E
E
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2 E
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E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
28E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Grading Area – 20 feet
beyond
35% Impact Area Limit 13E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E Remainder of
Parcel Coastal Sage Scrub
California Sagebrush Scrub
(Disturbed)
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
29E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
California Buckwheat
Scrub E
12 E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
California Buckwheat Scrub (Disturbed)
California Sagebrush - California
Buckwheat Scrub
California Sagebrush - Black Sage Scrub
Coast Prickly Pear Scrub
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
31 30E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
32 11E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Native
Woodland E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E E E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
3 E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
3 E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
California Walnut
Groves
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
California Walnut Groves
(Disturbed)
Coast Live Oak Woodland
(Disturbed)
E
3 E
4 E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
36E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Non-Native
Woodland
E35E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
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0 0
87.5 25
175
Feet
50 Meters Scale: 1:2,100
Data Source: Vegetation map developed by
UltraSystems (2022)
and updated by Psomas
(2023)
Aerial Source: Nearmap
2023
Project Impacts – Vegetation
Types and Other
Areas
Figure 4.4-5D (Rev: 01/05/2024 PLO)
R:\Projects\SAN04\3SAN040200\Graphics\Bio_NMD\ex_ProjectImpacts_VegTypes_B-D.pdf
UpdatedBiologicalResourc
esSection
regulations,orbytheCaliforniaDepartmentofFishand
WildlifeorU.S.Fish
andWildlifeService?
LessThanSignificantwithMitigationIn
corporated
SpecialStatusPlantSpecies Of the 76 species reported from the Project region, one species (southern California black
walnut) was incidentally observed during the general surveys and 25 species have potential
or limited potential to occur in the BSA based on the presence of suitable habitat. The
remaining 51 species would not be expected to occur because the BSA lacks suitable habitat
or because it is outside the current known geographic or elevation range of the species
(Table 4.4-2).
Two listed species and nine other species with a CRPR of 1 or 2 have potential or limited
potential to occur in the BSA based on the presence of suitable habitat.
These species are:
Nevin’s barberry, thread-leaved brodiaea, Coulter’s saltbush, intermediate mariposa-lily,
smooth tarplant, Parry’s spineflower, many-stemmed dudleya, mesa horkelia, Brand’s star
phacelia, white rabbit-tobacco, and San Bernardino aster. Because these species are
considered threatened or endangered in the Project region, impacts on these species would
be considered potentially significant depending on the size of the impacted population
relative to the total known population from the region and the average population size in the
region. A focused plant survey would be needed to determine the presence or absence of
these species in the BSA and whether there are any substantial populations. Implementation
of MMs BIO-1 and BIO-2 would reduce potential impacts on special status plant species to
less than significant. This would be required for any parcel containing areas of native and/or
non-native vegetation (i.e., Parcels 1–33) because some special status plant species may
occur in disturbed or ruderal areas. MM BIO-2 would not be required for Parcels 34–36
because these parcels consist entirely of developed/ornamental areas.
Fourteen special status plants that have potential or limited potential to occur have a CRPR
of 3 or 4. These species are: California androsace, western spleenwort, Catalina mariposalily, Plummer’s mariposa-lily, Lewis’s evening-primrose, smallflowered morning-glory, paniculate tarplant, Southern California black walnut, Robinson’s pepper-grass, smallflowered microseris, Hubby’s phacelia, south coast branching phacelia, Engelmann oak, and
Coulter’s matilija poppy. Impacts on species with a CRPR of 3 or 4 are not typically
considered significant because they are on a “review” or “watch” list, respectively, and not
considered Rare, Threatened, or Endangered in California or throughout their range. The
loss of up to 22.527 acres of potential habitat (i.e., all undeveloped areas within the maximum
total impact area) would not be expected to substantially diminish population numbers of
these species in the region. A total of 53.182 acres of undeveloped areas would remain in the
conservation easement areas. Therefore, impacts on these species would be considered
adverse but less than significant, and no mitigation would be required.
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SpecialStatusWildlife
Species Invertebrates
Of the two special status invertebrates reported from the Project region, Crotch bumble bee
has potential to occur. While monarch butterfly was observed during the summer 2022
surveys, this species is not expected to overwinter in the BSA because there are no known
roosts and the area is not typical of most overwintering locations.
Therefore, there would be
no impact on overwintering individuals, and no mitigation would be required.
Crotch bumble has potential to occur in the BSA. Suitable habitat for this species is present
throughout the BSA, including both native and non-native vegetation types. Pre-construction
focused surveys would be required to determine the presence or absence of this species. A
total of 22.527 acres of potential habitat (i.e., all undeveloped areas within the maximum
total impact area) for the Crotch bumble bee could potentially be impacted. This species is a
Candidate for State listing; therefore, if present, impacts on a ground nest of this species
would be considered potentially significant. Implementation of MM BIO-3 would reduce
potential impacts to less than significant.
Fish
The drainages in the BSA are ephemeral; no fish are expected to occur in the BSA. Therefore,
there would be no impact on special status fish species, and no mitigation would be required. Amphibians
Of the six special status amphibian species reported from the Project region, five of them
would not be expected to occur due to lack of suitable habitat (i.e., hydrology, stream type);
the drainages in the BSA are ephemeral and do not have enough water to support these
species. Therefore, there would be no impact on these species, and no mitigation would be
required.
Western spadefoot has limited potential to occur in the BSA. Marginally suitable terrestrial
habitat occurs that may be used for foraging; however, there are no suitable breeding pools
in the BSA. A total of 22.527 acres of marginally suitable foraging habitat (i.e., all
undeveloped areas within the maximum total impact area) could potentially be impacted. A
total of 53.182 acres of undeveloped areas would remain in the BSA within the conservation
easement areas. Due to the limited amount of terrestrial habitat loss relative to the
availability of terrestrial habitat for western spadefoot in the Project region, potential
impacts would not be expected to reduce the regional population of the species to below selfsustaining levels. Therefore, impacts on this species would be considered adverse, but less
than significant, and no mitigation would be required.
Reptiles
Of the nine special status reptile species reported from the Project region, two species (i.e,
western pond turtle and two-striped garter snake) would not be expected to occur due to
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lack of suitable habitat (i.e., hydrology, stream type); the drainages in the BSA are ephemeral
and do not have enough water to support these species. Therefore, there would be no impact
on these species, and no mitigation would be required. Coast horned lizard, orange-throated whiptail, coastal whiptail, southern California legless
lizard, California glossy snake, coast patch-nosed snake, and red-diamond rattlesnake have
potential or limited potential to occur in the BSA. Up to 22.527 acres of suitable or marginally
suitable habitat for these species (varies by species) could potentially be impacted. A total of
53.182 acres of undeveloped areas remains in the BSA within the conservation easement
areas. Due to the limited amount of habitat loss relative to the availability of habitat for
special status reptiles in the Project region, potential impacts would not be expected to
reduce the regional population of the species below self-sustaining levels.
Therefore, impacts
on these species would be considered adverse, but less than significant, and no mitigation
would be required.
Birds
Of the 22 special status bird species reported from the Project region, 13 are not expected to
occur due to lack of suitable habitat (e.g., marsh or riparian scrub/forest) or because the BSA
is outside the subspecies’ current known range. There would be no impact on these species,
and no mitigation would be required.
The federally Threatened coastal California gnatcatcher has potential to occur in the coastal
sage scrub habitats in the BSA. A total of 3.064 acres of suitable habitat for this species is
within the maximum total impact area and may be impacted (i.e., within Lots 10, 11, 23, 24,
28, 29, 30, or 31). It should be noted that 8.531 acres of coastal sage scrub would remain in
the conservation easement areas. Any impact on coastal California gnatcatcher habitat would
be considered potentially significant. Avoidance is recommended, if feasible. If future
homeowner projects on Lots 10, 11, 23, 24, 28, 29, 30, or 31 would impact coastal sage scrub,
implementation of MM BIO-4 would reduce impacts to less than significant.
Southern California rufous-crowned sparrow may occur in the coastal sage scrub vegetation
types in the BSA. A total of 3.064 acres of suitable habitat for this species is within the
maximum total impact area and may be impacted. It should be noted that 8.531 acres of
coastal sage scrub would remain in the conservation easement areas.
Due to the limited
amount of habitat loss relative to the availability of habitat for this species in the region,
potential impacts would not be expected to reduce the regional population of the species
below self-sustaining levels. Therefore, impacts on habitat for this species would be
considered adverse, but less than significant, and no mitigation would be required.
Burrowing owl has a limited potential to occur in the BSA. A total of
8.059 acres potentially
suitable habitat for this species (i.e., non-native herbaceous) is within the maximum total
impact area and may be impacted, while 13.214 acres of non-native herbaceous vegetation
would remain in the conservation easement areas. Due to the limited amount of habitat loss
relative to the availability of habitat for this species in the region, the loss of habitat would
be considered less than significant. However, active burrow sites of this species are
protected (year-round). Implementation of MM BIO-5 would require pre-construction
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burrow surveys and establishment of a protective buffer or exclusion and excavation of the
burrow following approved guidelines.
Cooper’s hawk was observed during the summer 2022 surveys (Ultrasystems 2022). In
addition, the following special status raptor species have potential or limited potential to
occur in the BSA for foraging: golden eagle, Swainson’s hawk, whitetailed kite, merlin, and long-eared owl. A total of 22.527 acres of suitable habitat for these species would be within
the maximum total impact area and may be impacted. A total of 53.182 acres of undeveloped
areas would remain within the conservation easement areas. Due to the limited amount of
habitat loss relative to the availability of habitat for these special status bird species in the
region, potential impacts would not be expected to reduce the regional population of these
species below self-sustaining levels. Therefore, impacts on foraging habitat for these species
would be considered adverse, but less than significant, and no mitigation would be required.
The Cooper’s hawk, white-tailed kite, and long-eared owl also have potential or limited
potential to nest within or adjacent to the BSA. Impacts on any active migratory bird or
raptor nest (common or special status species) would be considered a violation of the
Migratory Bird Treaty Act (MBTA) and/or Sections 3503, 3503.5, and 3513 of the California
FishandGameCode. The potential loss of an active special status bird species nest would be
considered significant. Implementation of MM BIO-6 would require pre-construction
surveys to ensure that construction would not violate the provisions of the MBTA or
CaliforniaFishandGameCode.
Mammals
Of the 12 special status mammal species reported from the Project region, 5 of them would
not be expected to occur due to lack of suitable habitat or because the BSA is outside their
current known range. Therefore, there would be no impact on these species, and no
mitigation would be required.
Northwestern San Diego pocket mouse, Bryant’s [San Diego desert] woodrat, and American
badger have potential or limited potential to occur in the BSA. A total of 22.527 acres of
suitable habitat for these species would be within the maximum total impact area and may
be impacted A total of 53.182 acres of undeveloped areas remains within the conservation
easement areas. Due to the limited amount of habitat loss relative to the availability of
habitat for these special status mammal species in the region, potential impacts would not
be expected to reduce the regional population below self-sustaining levels. Therefore,
impacts on habitat for these species would be considered adverse, but less than significant,
and no mitigation would be required.
Pallid bat, western red bat, and western mastiff bat have potential or limited potential to
forage in the BSA. A total of 22.527 acres of suitable habitat for these species would be within
the maximum total impact area and may be impacted. A total of 53.182 acres of undeveloped
areas would remain within the conservation easement areas. Due to the limited amount of
habitat loss relative to the availability of habitat for these special status bat species in the
region, potential impacts would not be expected to reduce the regional population of these
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species below self-sustaining levels. Therefore, impacts on foraging habitat for these species
would be considered adverse, but less than significant, and no mitigation would be required. Western red bat and western mastiff bat have potential to roost in trees in the BSA; bats may
roost in large walnut, oak, or non-native trees. A total of 11.404 acres of native and nonnative woodland with potential roosting habitat would be within the maximum total impact
area and may be impacted. A total of 31.437 acres of native and nonnative woodland would remain within the conservation easement areas. However, construction activities could
directly impact roosting individuals. Demolition or removal of roosts may be considered
significant, depending on the size of the roost. Implementation of MM BIO-7 would reduce
impacts to less than significant.
Mountain lions may pass through and hunt throughout the undeveloped areas that could
potentially be impacted (i.e., 22.527 acres). The mountain lion is proposed for State listing
due to fragmentation of habitat that isolates populations. Although future projects may
permanently impact suitable habitat, a total of 53.182 acres of undeveloped areas would
remain within the conservation easement area. Additionally, future projects would not
create new barriers to movement. Therefore, future projects would not be expected to
interfere with movement by mountain lions. In addition, rocky outcroppings or secluded
canyons are not present within the maximum potential impact area.
Therefore, mountain
lions are not expected to den within the maximum potential impact area, and no mitigation
would be required.
IndirectImpac
tsNoise
Construction of future homeowner projects could increase noise levels in a very localized
portion of the BSA (i.e., one lot at a time). During construction, temporary noise impacts have
the potential to disrupt foraging, nesting, roosting, and denning activities for a variety of
wildlife species within that lot and its immediate vicinity. This impact would be localized in
space and relatively short-term in nature; therefore, wildlife would be expected to disperse
to adjacent open space during the construction and could return following completion of the
construction. Therefore, noise impacts would be considered adverse, but not significant for
most wildlife species.
Noise from construction activities may cause birds adjacent to the work area to abandon
their territory or may discourage individuals from selecting habitat adjacent to the work
area due to construction noise and human activity. Construction activities could increase
noise in the immediate vicinity and could interfere with communication between a pair that
could affect their nest success. Noise impacts would be considered potentially significant for
the coastal California gnatcatcher and nesting birds and raptors. With the implementation of
MM BIO-6, indirect noise impacts on the coastal California gnatcatcher and other nesting
birds and raptors would be reduced to less than significant.
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The future homeowner projects are not expected to change the noise levels from existing
conditions. Therefore, long-term noise impacts would be less than significant, and no
mitigation would be required. Night
Lighting
Night lighting may impact the behavioral patterns of nocturnal and crepuscular (i.e., active
at dawn and dusk) wildlife adjacent to night lighting. Of greatest concern is the effect on
small, ground-dwelling animals that use the darkness to hide from predators and bats, owls,
and mountain lion, which are specialized night foragers.
Construction activities would not involve night work and, therefore, would not impact
nocturnal and crepuscular wildlife species. While there is existing development (including
lighting of homeowners’ backyards and landscaping) in the BSA, future projects may include
the installation of additional lighting that could negatively impact nocturnal and crepuscular
wildlife species within the lots as well as in the surrounding adjacent open space.
Implementation of MM BIO-8 would reduce this impact to less than significant.
Bird
Strikes
A potential long-term, operational impact associated with installation of large areas of glass
(e.g., infinity edge pools, wind screens) concerns bird strike mortality and injury.
Ornithologists estimate that up to a billion birds are killed or injured annually by collisions
with clear and reflective sheet glass and plastic (Klem 2009). It is thought that they cannot
distinguish between the reflection on the glass/plastic surface and the natural landscape.
Installation of structures with glass surfaces have the potential to result in bird strikes given
the proximity to natural open space areas. The potential loss of a federallylisted species (e.g., coastal California gnatcatcher) due to bird strikes is potentially significant. Implementation
of MM BIO-9 would ensure that potential impacts are less than significant.
Human
Activity
Given the developed nature of the BSA, individual homeowner projects are not expected to
increase human activity. Therefore, there would be no long-term impact, and no mitigation
would be required. During construction, there would be a slight increase in human activity within one lot at a
time. This would incrementally increase the disturbance of the natural open space
immediately adjacent to the construction areas. This increased activity could potentially
disrupt foraging, nesting, roosting, and/or denning activities for a variety of wildlife species.
Increased human activity could deter wildlife from using habitat adjacent to construction.
This impact would be highly localized and relatively short-term in nature; wildlife would be
expected to disperse to adjacent open space. Therefore, this impact would be considered
adverse, but less than significant, and no mitigation would be required.
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b) Wouldtheprojecthaveasubstantialadverseimpactonan
yriparianhabitat
orothersensitivenaturalcommunityidentifiedinlocalor
regionalplans,
policies,regulationsorbytheCaliforniaDepartmentofFis
handWildlifeor
U.S.FishandWildlifeService?
LessThanSignificantwithMitigationIn
corporated
CoastalSageScrub A total of 3.064 acres of coastal sage scrub vegetation occurs in the maximum potential
impact area. Coastal sage scrub vegetation types that may be impacted include California
sagebrush scrub (disturbed), California buckwheat scrub, California buckwheat scrub
(disturbed), California sagebrush – California buckwheat scrub, California sagebrush – black
sage scrub, and coast prickly pear scrub. Coast prickly pear scrub is considered a sensitive
natural community by CDFW. The remaining coastal sage scrub has declined in the region
and may be considered locally sensitive, especially if they are occupied by the federally
Threatened coastal California gnatcatcher.
A total 0.329 acre of coast prickly pear scrub is located within the maximum potential impact
area, entirely located in Lot 11. A total of 3.519 acres of coast prickly pear scrub would
remain in the conservation easement areas. This vegetation type provides high quality
habitat for native species. Therefore, avoidance of this vegetation type is recommended.
However, if the maximum potential impact area was impacted, resulting in the loss of 0.329
acre, that would represent a loss of 9 percent of this vegetation type in the BSA while 91
percent of this vegetation type would be preserved in the conservation area. The potential
loss of 0.329 acre of coast prickly pear scrub would be considered adverse, but less than
significant when considering the amount of this vegetation type in the Project region. MM
BIO-1 is recommended to avoid and minimize impacts on this vegetation type to the extent
possible.
The following lots have coastal sage scrub vegetation present within the maximum potential
impact area: Lots 10, 11, 23, 24, 28, 29, 30, and 31. A total of 2.735 acres of coastal sage scrub
(excluding coast prickly pear scrub) are located within the maximum potential impact area;
2.395 acres are located in Lot 11. Coastal sage scrub (excluding coast prickly pear scrub)
remaining in the conservation easement would be 5.012 acres. Coastal sage scrub vegetation
types (excluding coast prickly pear) are not considered sensitive natural communities;
therefore, the loss of up to 2.735 acres of coastal sage scrub would be considered adverse,
but less than significant when considering the amount of this vegetation type in the Project
region. Therefore, no mitigation would be required for the loss of coastal sage scrub as a
vegetation type. However, coastal sage scrub vegetation types (including coast prickly pear
scrub) could be occupied by coastal California gnatcatcher (discussed above); mitigation
would be required for the loss of occupied habitat. MM BIO-1 is recommended to avoid and
minimize impacts on coastal sage scrub vegetation types to the extent possible.
MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-71
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
UpdatedBiologicalResourc
esSection
NativeWoodland/Protected
Trees
A maximum of 10.752 acres of native woodland vegetation (7.850 acres California walnut
groves, 1.920 acres California walnut groves (disturbed), and 0.982 acre coast live oak
woodland) are located in the maximum potential impact area. Native woodland remaining
in the conservation easement would be 30.635 acres (19,207 acres California walnut groves,
10.609 acres California walnut groves (disturbed), and 0.819 acre coast live oak woodland).
California walnut groves and California walnut groves (disturbed) are considered sensitive
natural communities by CDFW. Oak woodlands are not considered sensitive natural
communities but may be considered locally sensitive because of their high habitat and
aesthetic value. The following lots have California walnut groves and/or California walnut
groves (disturbed) within the maximum potential impact area: Lots 7–28, 31–33. The
following lots have coast live oak woodland within the maximum potential impact area: Lots
2, 3, 4, 17, 18, 22, and 29. Impacts of California walnut groves and/or California walnut
groves (disturbed) would be considered potentially significant. Impacts on coast live oak
woodland would be considered adverse, but less than significant when considering the
amount of this vegetation type in the Project region. MMs BIO-1 and BIO-10 would be
required to avoid and minimize impacts on California walnut groves and California walnut
groves (disturbed) and would be recommended to avoid and minimize impacts on coast live
oak woodland to the extent possible.
Native woodlands in the BSA contain Southern California black walnut and coast live oak
trees that would meet the definition of a mature tree under the City of San Dimas municipal
code, and would therefore be subject to provisions of the municipal code. If mature trees
would be removed from a parcel, the homeowner would be
required to comply with
conditions of Section 18.162.040 (Review Required – Developed Property) of the municipal
code. Implementation of MM BIO-10 would ensure compliance with the municipal code and
would mitigate for the loss of native trees meeting the City’s definition of mature significant
trees. This mitigation would provide compensatory mitigation for the loss of native
woodlands.
JurisdictionalResour
ces
Neither UltraSystems nor Psomas performed a jurisdictional delineation on the BSA.
However, potential jurisdictional water resources (i.e., WOTUS under the regulatory
authority of the USACE, waters of the State under the regulatory authority of the RWQCB,
and/or streambeds under the regulatory authority of the CDFW) may be present in the BSA.
Parcels containing streambeds, channels, converging slopes, or depressional areas may have
areas that would be considered potentially jurisdictional and should be assessed further if
future home-owner projects would affect them (Figure 4.4-6). Parcels containing resources
mapped by the NWI outside the conservation easement include Parcels 8, 9, 10, 11, 12, 13,
14, and 25; however, it should be noted that additional parcels may also contain
jurisdictional resources. In order to determine if jurisdictional resources are present in a
particular parcel, a jurisdictional delineation would be necessary. If jurisdictional waters are
present and would be impacted by a future project, then permits, certifications, and/or
agreements from the USACE, the RWQCB, and/or the CDFW
would be required.
MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-72
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
UpdatedBiologicalResourc
esSection
Implementation of MMs BIO-1 and BIO-11 would ensure that jurisdictional resources are
identified, and applicable jurisdictional permits are obtained.
IndirectImpac
tsIncreased Dust and Urban
Pollutants
Grading activities would disturb soils and result in the temporary accumulation of dust on
the surface of the leaves of trees, shrubs, and herbs. The respiratory function of the plants in
the area could be impaired when dust accumulation is excessive. This indirect effect of
construction of the Project on the native vegetation in the immediate vicinity of the
construction area is considered adverse, but less than significant because it would be limited
in extent and would not substantially reduce plant populations in the region. Therefore, no
mitigation would be required.
During construction, excess silt, petroleum, or chemicals on the soil surface within the
construction area could be washed into drainages during storms and may affect areas
downstream of the BSA. Adverse effects on water quality could indirectly impact species that
use downstream riparian areas by affecting the food web interactions (e.g., abundance of
insects or other prey) or through biomagnification (i.e., the buildup of chemicals in body
tissues to toxic levels in higher trophic levels). These impacts would be reduced to less than
significant with the implementation of MM BIO-12.
Pollutants, such as pesticides or herbicides, may be used in the installation of new
landscaping. These chemicals may have a negative effect on native plant or wildlife species
and their use may be considered potentially significant. It is expected that chemicals used in
new landscaping would be the same as those currently. Furthermore, homeowners are
expected to use chemicals approved for residential use. Therefore, this impact would be
considered less than significant and no mitigation would be required.
Invasive Exotic Plant
Species
Landscaping that includes the installation of non-native, invasive plant species (e.g., species
listed in the California Invasive Plant Council’s invasive plant inventory [Cal-IPC 2023]) can
be detrimental to surrounding native habitat. Invasive species are often more adapted to a
wider variety of growing conditions and can out-compete native plant populations for
available nutrients, prime growing locations, and other resources. They may hybridize with
native species, thereby impacting the genetic integrity of the native species. Because these
plants reproduce so quickly and in such large amounts, they can quickly replace many native
plant populations, resulting in lower species diversity, low of areas suitable for breeding
and/or nesting by wildlife species, changes in riparian ecosystems, and overall reduction in
habitat functions and values.
This impact would be considered potentially significant.
Implementation of MM BIO-13
would reduce this impact to less than significant.
MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-73
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
San Dimas
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(Rev: 01/05/2024 PLO)
R:\Projects\SAN04\3SAN040200\Graphics\Bio_NMD\ex_Potential_JDResources_Impacts.pdf
San Dimas
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E
Legend
Project
16E Boundary
E
E
E
E
E Parcel 2
E E
E7E
E
E
E
E
E
E
E
E
E
E
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E
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E
E
E
E
E
Conservation
Easement
35% Lot Coverage
14E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
!(
!( 15
Grading Area – 20 feet
beyond
35% Impact Area Limit
Rp1SS E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
28E
E
E
E
E
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E
E
E
E Remainder of
Parcel 13
E E E
E
E
E
E
E
E
E
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E
E
E
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E
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E
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E
E
E
E
E
E
Wetland
Type
Riverine
E
E
E
E
E
E
E
E
E
E
E
E
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E
E
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E
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E
E
E
E
E
E
29 Riparian
Type Forested/Shrub
Riparian 12 Rp1E S
E ESE E
E
E
E
E
E
E
E
E
E
E
E
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E
E
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E
Infrastructur
e Culvert 30 E
E
E
E
E
E
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E
R4SBA !( Catch Basin
E
E
E
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Ribbon
Drain
3 E1 Open Channel E
E
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R I
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p
E1ESE ESE
E
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Underground Culvert
Gravity Underground
Culvert
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11E
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E10 E
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R4SBJ E
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E
Note: Jurisdictional resources shown are based on remote data and may not represent
actual jurisdictional resources in the Project Boundary. A jurisdictional delineation would
be required to map resources under the regulatory authority of the U.S.
Army Corps of
Engineers, the Regional Water Quality Control Board, and/or the California
Department of Fish and Wildlife.
E
E Rp1SS
9 E
E
E
E
E
E
E
B Rp1SS
8 Rp1SS
R4SBJ
C D
²
0 0
87.5 25
175
Feet
50 7 Meters Scale: 1:2,100
Data Source: U.S. Fish & Wildlife Service; National Wetlands Inventory (2023);
UltraSystems
(2022)
Aerial Source: Nearmap
2023 R4SBA
Project Impacts –
Potential Jurisdictional
Resources
Figure 4.4-6C
Rp1FO
(Rev: 01/05/2024 PLO)
R:\Projects\SAN04\3SAN040200\Graphics\Bio_NMD\ex_Potential_JDResources_Impacts.pdf
E
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E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
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E
E
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E
E
E
E
E
E
E
E
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E
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E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Conservation
Easement
35% Lot Coverage 28E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
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E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Grading Area – 20 feet
beyond
13E 35% Impact Area Limit
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E Remainder of
Parcel Wetland Type
Freshwater Forested/Shrub
Wetland
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
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E
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E
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9 !(
!(
Riverine E
12 E
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E
E
E
E
Riparian
Type E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
Forested/Shrub
Riparian 31
30 Infrastructur
e
E
E
E
E
E
E
E
E
E
E
E
E
E
E
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32 Culvert
11E
E
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E
E
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E
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E
E
!( Catch Basin E
E
E
E
E
E
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E
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3 E
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Ribbon
Drain E
E
E
E
E
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Open Channel
E
3 E
4 E
E
E
E
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E
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E
E
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E
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36E
E
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I Underground Culvert
Gravity Underground
Culvert
E
E
E
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E
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R4SBJ E
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10 Note: Jurisdictional resources shown are based on remote data and may not represent
actual jurisdictional resources in the Project Boundary. A jurisdictional delineation would
be required to map resources under the regulatory authority of the U.S.
Army Corps of
Engineers, the Regional Water Quality Control Board, and/or the California
Department of Fish and Wildlife.
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8 Rp1SS
R4SBJ
C D
7 E
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0 0
87.5 25
175
Feet
50 Meters Scale: 1:2,100
Data Source: U.S. Fish & Wildlife Service; National Wetlands Inventory (2023);
UltraSystems
(2022)
Aerial Source: Nearmap
2023 !(
Project Impacts –
Potential
!(
R4SBAx Jurisdictional
Resources
Figure 4.4-6D
Rp1FO
(Rev: 01/05/2024 PLO)
R:\Projects\SAN04\3SAN040200\Graphics\Bio_NMD\ex_Potential_JDResources_Impacts.pdf
UpdatedBiologicalResourc
esSection
c) Wouldtheprojecthaveasubstantialadverseeffecton
stateorfederally
protectedwetlands(including,butnotlimitedto,marsh,
vernalpool,
coastal,etc.)throughdirectremoval,filling,hydrological
interruption, or
othermeans?
LessThanSignificantwithMitigationI
ncorporated As discussed above, neither UltraSystems nor Psomas performed a jurisdictional delineation
on the BSA. However, potential jurisdictional water resources (i.e., WOTUS under the
regulatory authority of the USACE, waters of the State under the regulatory authority of the
RWQCB, and/or streambeds under the regulatory authority of the CDFW) may be present in
the BSA.
Parcels containing streambeds, channels, converging slopes, or depressional areas may have
areas that would be considered potentially jurisdictional and should be assessed further if
future home-owner projects would affect them (Figure 4.4-6). Parcels containing resources
mapped by the NWI outside the conservation easement include Parcels 8, 9, 10, 11, 12, 13,
14, and 25; however, it should be noted that additional parcels may also contain
jurisdictional resources. In order to determine if jurisdictional resources are present in a
particular parcel, a jurisdictional delineation would be necessary. If jurisdictional waters are
present and would be impacted by a future project, then permits, certifications, and/or
agreements from the USACE, the RWQCB, and/or the CDFW
would be required.
Implementation of MMs BIO-1 and BIO-11 would ensure that jurisdictional resources are
identified, and applicable jurisdictional permits are obtained.
IndirectImpac
tsUrban
Pollutants
During construction, excess silt, petroleum, or chemicals on the soil surface within the
construction area could be washed into drainages during storms and may affect areas
downstream of the BSA. Adverse effects on water quality could indirectly impact species that
use downstream riparian areas by affecting the food web interactions (e.g., abundance of
insects or other prey) or through biomagnification (i.e., the buildup of chemicals in body
tissues to toxic levels in higher trophic levels). These impacts would be reduced to less than
significant with the implementation of MM BIO-12.
Pollutants, such as pesticides or herbicides, may be used in the installation of new
landscaping. These chemicals may have a negative effect on native plant or wildlife species
and their use may be considered potentially significant. It is expected that chemicals used in
new landscaping would be the same as those currently. Furthermore, homeowners are
expected to use chemicals approved for residential use. Therefore, this impact would be
considered less than significant and no mitigation would be required.
MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-74
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
UpdatedBiologicalResourc
esSection
d) Wouldtheprojectinterferesubstantiallywiththemovement ofanyresident
ormigratoryfish orwildlifespeciesorwithestablished
resident or
migratorywildlifecorridors,orimpedetheuseofwildlife
nurserysites?
LessThanSignificantImpactwithMitigation
The BSA is surrounded by residential development and roadways and Incorporated there are significant
barriers to wildlife movement (SR-57 and I-10) between the BSA and larger areas of open
space. Given the regional context of the BSA, development within the maximum potential
impact area is not expected to impact regional wildlife movement.
Wildlife are expected to use the undeveloped ridgelines, drainages, and slopes for local travel
routes throughout the BSA. Following the text amendment, some portion of each lot may be
impacted depending on home-owner projects; however, the conservation easement on each
parcel would remain available for wildlife movement. Project impacts on local wildlife
movement would be considered adverse but less than significant; no mitigation would be
required.
IndirectImpac
tsNoise
Construction of future homeowner projects could increase noise levels in a very localized
portion of the BSA (i.e., one lot at a time). During construction, temporary noise impacts have
the potential to disrupt foraging, nesting, roosting, and denning activities for a variety of
wildlife species within that lot and its immediate vicinity. This impact would be localized in
space and relatively short-term in nature; therefore, wildlife would be expected to disperse
to adjacent open space during the construction and could return following completion of the
construction. Therefore, noise impacts would be considered adverse, but not significant.
The future homeowner projects are not expected to change the noise levels from existing
conditions. Therefore, long-term noise impacts would be less than significant, and no
mitigation would be required. Night
Lighting
Night lighting may impact the wildlife movement of nocturnal and crepuscular (i.e., active at
dawn and dusk) wildlife adjacent to night lighting.
Construction activities would not involve night work and, therefore, would not impact
nocturnal and crepuscular wildlife movement. While there is existing development
(including lighting of homeowners’ backyards and landscaping) in the BSA, future projects
may include the installation of additional lighting that could negatively impact nocturnal and
crepuscular wildlife movement within the lots as well as in the surrounding adjacent open
space. Implementation of MM BIO-8 would reduce this impact to less than significant. MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-75
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
UpdatedBiologicalResourc
esSection
Human
Activity
Given the developed nature of the BSA, individual homeowner projects are not expected to
increase human activity. Therefore, there would be no long-term impact, and no mitigation
would be required. During construction, there would be a slight increase in human activity within one lot at a
time. This would incrementally increase the disturbance of the natural open space
immediately adjacent to the construction areas. This increased activity could potentially
disrupt wildlife movement immediately adjacent to the work during construction activities.
This impact would be highly localized and relatively short-term in nature; wildlife would be
expected to disperse to adjacent open space. Therefore, this impact would be considered
adverse, but less than significant, and no mitigation would be required. e) Wouldtheprojectconflictwithanylocalpoliciesorord
inancesprotecting
biologicalresources,suchasatreepreservationpolicyor
Lessordinance? thanSignificantImpactwithMitigation
Incorporated
ProtectedTrees Native woodlands in the BSA contain Southern California black walnut and coast live oak
trees that would meet the definition of a mature tree under the City of San Dimas municipal
code, and would therefore be subject to provisions of the municipal code. If mature trees
would be removed from a parcel, the homeowner would be
required to comply with
conditions of Section 18.162.040 (Review Required – Developed Property) of the municipal
code. Implementation of MM BIO-10 would ensure compliance with municipal code. MM
BIO-2 would be required to mitigate for the loss of native trees meeting the City’s definition
of mature significant trees.
Non-native woodlands in the BSA contain gum trees (i.e., Eucalyptus) and other non-native
trees that meet the definition of a mature tree under the City of San Dimas municipal code,
and would therefore be subject to provisions of the municipal code. If mature significant
trees would be removed from a parcel, the homeowner would be required to comply with
conditions of Section 18.162.040 (Review Required – Developed Property) of the municipal
code. Implementation of MM BIO-10 would ensure compliance with municipal code.
MigratoryBirdTreatyAct/CaliforniaFishan
dGameCode Several common bird species have the potential to nest in the vegetation, on the ground, or
in structures throughout the BSA. Common raptor species also have potential to nest in large
trees in the BSA. The loss of an active migratory bird or raptor nest, including nests of
common or special status species, would be considered a violation of the MBTA and Sections
3503, 3503.5, and 3513 of CaliforniaFishandGameCode. The MBTA and CaliforniaFishand
GameCode prohibit the taking of migratory birds, nests, and eggs. The potential loss of an
active nest would be considered significant. This is applicable to all parcels in the BSA.
MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-76
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
UpdatedBiologicalResourc
esSection
Implementation of MM BIO-6 would ensure compliance with the provisions of the MBTA and
CaliforniaFishandGameCode. This would be required for any parcel with impacts requiring
permit approval (e.g., a grading permit from the City of San Dimas). IndirectImpac tsNoise
Construction of future homeowner projects could increase noise levels in a very localized
portion of the BSA (i.e., one lot at a time). During construction, temporary noise impacts have
the potential to disrupt nesting for a variety of bird species within that lot and its immediate
vicinity.
Noise from construction activities may cause birds adjacent to the work area to abandon
their territory or may discourage individuals from selecting habitat adjacent to the work
area due to construction noise and human activity. Construction activities could increase
noise in the immediate vicinity and could interfere with communication between a pair that
could affect their nest success. Noise impacts would be considered potentially significant for
the nesting birds and raptors. With the implementation of MM BIO-6, indirect noise impacts
on nesting birds and raptors would be reduced to less than significant.
Human
Activity
During construction, there would be a slight increase in human activity within one lot at a
time. This would incrementally increase the disturbance of the natural open space
immediately adjacent to the construction areas. This increased activity could potentially
disrupt nesting activities. Increased human activity could deter wildlife from using habitat
adjacent to construction. This impact would be highly localized and relatively short-term in
nature. With the implementation of MM BIO-6, indirect impacts as a result of human activity
on nesting birds and raptors would be reduced to less than significant. f) Would theprojectconflictwiththeprovisionsofan
adoptedHabitat
ConservationPlan,NaturalCommunitiesConservationPlan,
orother
approvedlocal,regional,orstatehabitatconservationplan?
NoImpa
ctThe Project is not located within the boundaries of an adopted Habitat Conservation Plan or
a Natural Communities Conservation Plan.
The Project is not located within an area designated by the County of Los Angeles as a SEA.
The East San Gabriel Valley SEA includes Walnut Creek to the north, Bonelli Regional
Park/Puddingstone Reservoir to the east, and various open spaces referred to as the Walnut
Islands to the south; the nearest SEA boundaries to the BSA are located approximately 0.5
mile to the north and approximately 0.5 mile to the east.
MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-77
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
UpdatedBiologicalResourc
esSection
4.1.5 MITIGATIONPROGRAM
This section focuses on the development of mitigation measures (MMs) for those impacts of
the Project found to be significant or potentially significant. Strategies to mitigate each
impact to a less than significant level are identified and described in the following section.
Table 4.4-5 shows which MMs are applicable to each parcel.
MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-78
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
UpdatedBiologicalResourc
esSection
TABLE4.4
MITIGATIONMEASURESAPPLICABLETOE ‐5
ACHLOTNUMBER
Mitigation Mitigation
MeasureBIO‐4
:
Coastal
California
Gnatcatcher
(Focused
MeasureBIO‐6
:
NestingBirds/
Raptors
Mitigation
MitigationMeasur
e
BIO‐1:
Mitigation
MeasureBIO‐2
:
MeasureBIO‐11
:
Jurisdictional
Permitting
(Survey‐
Jurisdictional
Delineation)2
Mitigation Mitigation
MeasureBIO‐5
BurrowingOw
l
(Pre‐
Mitigation Mitigation Mitigation Mitigation Mitigation
Environmentally
SensitiveAreas
(Design/Plan
Check)
SpecialStatus
MeasureBIO‐3:
(Construction MeasureBIO‐7: MeasureBIO‐8:
MeasureBIO‐9:
Mitigation MeasureBIO‐12:
PlantSpecies MeasureBIO‐13:
(Focused
Survey)
CrotchBumbl
e
Bee(Focused
Survey)
Timing/Pre‐
construction
Survey)
RoostingBats
(Construction
Timing/BMPs)
NightLightin
g
(Design/Plan
Check)
BirdStrikes
(Design/Plan
Check)
MeasureBIO‐10
:
ProtectedTrees
(TreeSurvey)
WaterQuality
(Construction
BMPs)
InvasiveSpecie
s
(Design/Plan
Check)
VegetationTypeswithinPotential
Impact
Area1
LotNumber
Lot 1
Survey) construction)
None 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
P
P
P
P
P
P
X
P
X
X
X
X
P
P
P
P
P
P
P
P
P
P
P
X
P
P
P
P
P
P
P
P
P
P
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
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
Lot 2 Woodland,
Ruderal
Woodland,
Ruderal
Woodland,
Ruderal
Ruderal
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
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
Lot 3
Lot 4
Lot 5
Lot 6 Ruderal
Lot 7 Woodland, Ruderal
Woodland, Ruderal
Woodland, Ruderal
CSS, Woodland, Ruderal
CSS/Cactus Scrub, Woodland,
Ruderal
Woodland
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
Lot 8
Lot 9
Lot 10
Lot 11
Lot 12
Lot 13
Lot 14
Lot 15
Lot 16
Lot 17
Lot 18
Lot 19
Lot 20
Lot 21
Lot 22
Lot 23
Lot 24
Lot 25
Lot 26
Lot 27
Lot 28
Lot 29
Lot 30
Lot 31
Lot 32
Lot 33
Lot 34
Lot 35
Lot 36
Open Space
X
X
Woodland,
Ruderal
Woodland,
Ruderal
Woodland,
Ruderal
Woodland,
Ruderal
Woodland
Woodland
Woodland, Ruderal
CSS, Woodland,
Ruderal
CSS, Woodland,
Ruderal
Woodland, Ruderal
Woodland, Ruderal
Woodland
X
X
X
X
X
CSS, Woodland,
Ruderal
CSS, Ruderal
X
X
X
X
X
X
X
X
X
CSS, Ruderal
CSS, Woodland,
Ruderal
Woodland, Ruderal
Woodland, Ruderal
None
X
X
X
X
X
X
Woodland X X X X X X X
None
None [all within Conservation
Easement]
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TABLE4.4
MITIGATIONMEASURESAPPLICABLETOE ‐5
ACHLOTNUMBER
Mitigation Mitigation
MeasureBIO‐4
:
Coastal
California
Gnatcatcher
(Focused
MeasureBIO‐6
:
NestingBirds/
Raptors
Mitigation
MitigationMeasur
e
BIO‐1:
Mitigation
MeasureBIO‐2
:
MeasureBIO‐11
:
Jurisdictional
Permitting
(Survey‐
Jurisdictional
Delineation)2
Mitigation Mitigation
MeasureBIO‐5
BurrowingOw
l
(Pre‐
Mitigation Mitigation Mitigation Mitigation Mitigation
Environmentally
SensitiveAreas
(Design/Plan
Check)
SpecialStatus
MeasureBIO‐3:
(Construction MeasureBIO‐7: MeasureBIO‐8:
MeasureBIO‐9:
Mitigation MeasureBIO‐12:
PlantSpecies MeasureBIO‐13:
(Focused
Survey)
CrotchBumbl
e
Bee(Focused
Survey)
Timing/Pre‐
construction
Survey)
RoostingBats
(Construction
Timing/BMPs)
NightLightin
g
(Design/Plan
Check)
BirdStrikes
(Design/Plan
Check)
MeasureBIO‐10
:
ProtectedTrees
(TreeSurvey)
WaterQuality
(Construction
BMPs)
InvasiveSpecie
s
(Design/Plan
Check)
VegetationTypeswithinPotential
Impact
Area1
LotNumber
Survey) construction)
1 1
1 2
2 CSS: Coastal sage scrub vegetation types include California sagebrush scrub (disturbed), California buckwheat scrub, California buckwheat scrub (disturbed), California sagebrush – California buckwheat scrub, California sagebrush – black sage scrub, and coast prickly pear scrub.
Woodland: Woodland vegetation types include California walnut groves, California walnut groves (disturbed), and coast live oak woodland (disturbed). Ruderal: Ruderal vegetation types include upland mustards or star-thistle fields and upland mustards or star-thistle fields (disturbed); these areas are dominated by non herbaceous species.
X - This mitigation measure would be required for the parcel. P - A formal jurisdictional delineation was not conducted; therefore, it is unknown whether these parcels contain drainage features that were not identified by the National Wetlands Inventory (see Exhibit 10). If a proposed homeowner project would Colorimpact a drainage feature, a jurisdictional delineation may be required. CodeforTypeof Mitigation
Design/Plan Check Focused
Surveys Pre-construction
Survey
Construction
Timing/BMP
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MMBIO‐1
EnvironmentallySensitiveAreas
Avoidance. Impacts on sensitive natural communities (i.e., coast prickly pear scrub,
California walnut groves, and California walnut groves
[disturbed]), jurisdictional
features, Threatened and Endangered and CRPR 1B and 2B plant locations shall be
avoided or minimized to the extent practicable during Project design. While not
required, it is recommended that other coastal sage scrub and coast live oak
woodland communities and CRPR 3 and 4 locations also be avoided to the extent
practicable. Project plans shall be submitted to the City demonstrating that sensitive
natural communities, jurisdictional features, special status plant locations, and other
native vegetation types have been avoided to the extent practicable. If any sensitive
natural communities, jurisdictional features, special status plant locations, or other
native vegetation types are located within 500 feet of the project, they will be shown
on project plans and labeled Environmentally Sensitive Areas. If the sensitive natural
communities, jurisdictional features, special status plant locations, or other native
vegetation types are located within 200 feet, the plans shall include a note with the
information below with regard to “Protection” of these resources.
Protection. If a future homeowner project involves vegetation clearing and/or the
use of mechanized equipment, and the lot has sensitive habitats (i.e., coast prickly
pear scrub, California walnut groves, and California walnut groves [disturbed]),
jurisdictional features, or Threatened and Endangered and CRPR 1B or 2B plant
locations within 200 feet of the project limits, the limits shall be marked prior to the
initiation of project activities. While not required, it is recommended that this
protection also be implemented if other native vegetation types (i.e., coastal sage
scrub and coast live oak woodland) or CRPR 3 or 4 plant locations are present within
200 feet of project limits. Sensitive natural communities, jurisdictional features,
special status plant locations, as well as other native vegetation types (i.e.,
Environmentally Sensitive Areas), outside the limits shall be avoided during project
activities. No equipment, spoils piles, materials storage, or other disturbance shall
occur within sensitive natural communities, jurisdictional features, special status
plant locations or other native vegetation types (i.e., Environmentally Sensitive
Areas).
MMBIO‐2 SpecialStatusPlants:Prior to removal of vegetation (including coastal sage
scrub, native woodland, non-native woodland, or non-native herbaceous vegetation
types) for projects requiring a City permit, the homeowner shall retain a qualified
Botanist to conducted focused surveys for special status plant species within the
proposed impact area. The survey shall be performed during the target species’ peak
blooming period in accordance with the most current protocols approved by CDFW
and CNPS. Because blooming periods overlap, generally one early spring (i.e.,
March/April) and one late spring/early summer (May/June) survey can be conducted
to cover all target species. The peak blooming time varies based on the rainfall of the
year.
To assist homeowners in the BSA, the HOA could retain a qualified Biologist to
conduct a special status plant survey for the entire BSA during a year of adequate MUNICIPAL CODE TEXT AMENDMENT 20-
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rainfall. This would identify special status plant locations for each lot. Following the
survey, a map overlay could be made showing special status plant locations to be
avoided in order to avoid the need for further mitigation. The preparation of a single
special status plant survey throughout the BSA would provide an efficiency of scale
that would be more cost-effective than the preparation of individual special status
plant surveys by lot.
If no special status plant species are located within 200 feet of project activities, no
further measures would be required.
If there is a special status plant location present, but it would not be impacted,
avoidance and protective measures described under MM BIO-1 shall be followed. If a special status plant location is observed within the project impact area, the
qualified Biologist conducting the survey shall evaluate the significance with respect
to the number of individuals that would be impacted and the status of the species.
If Nevin’s barberry or thread-leaved brodiaea are observed in the impact area
and cannot be avoided, any impact on these species shall be considered
significant. Prior to impacting individuals of either species, approval shall be
required from both the USFWS and CDFW. One of the
following mitigation
options shall be required: (1) payment of an in-lieu
mitigation fee to an
approved mitigation bank with credits for the subject
species; or (2)
preparation of a Special Status Plant Translocation Plan. If translocation is
selected, a qualified Restoration Biologist shall be retained to prepare a Special
Status Plant Species Translocation Plan for approval by the USFWS and CDFW.
The Special Status Plant Translocation Plan shall include the following topics:
(1) responsibilities and qualifications of the personnel to implement and
supervise the plant, (2) mitigation site selection criteria, (3) methods for
seed/bulb/corm or individual collection; (4) site preparation and planting
implementation, (5) implementation schedule, (6)
maintenance
plan/guidelines, (7) monitoring plan, and (8) long-term preservation. If
seeds/bulbs/corms or individuals will be collected as part of the mitigation
strategy, a qualified Restoration Biologist/Seed
Collector shall collect
seed/bulbs/corms or individuals for translocation and shall store them in
appropriate conditions to maintain the viability of the seed. If plants with a CRPR of 1B or 2B are observed in the impact area and cannot
be avoided, the determination of significance will be based on the size of the
impacted population relative to the regional population size. The regional
population size will be determined based on the current total population sizes
(excluding occurrences considered extirpated) of CNDDB
and CCH records
from the USGS Baldwin Park, San Dimas, Ontario, La Habra, Yorba Linda, Prado
Dam, Azusa, Glendora, and Mt. Baldy 7.5-minute quadrangles.
If the impacted
population of CRPR 1B or 2B species represents less than five percent of the
regional population, the impact will be considered less than significant and no
mitigation will be required. If the impacted population of CRPR 1B or 2B
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species represents five percent or more of the
regional population,
compensatory mitigation shall be required. One of the
following mitigation
options shall be required: (1) payment of an in-lieu
mitigation fee to an
approved mitigation bank with credits for the subject species; (2) collection of
seeds/bulbs/corms or individuals by a qualified Seed
Collector and donation
to the California Botanic Garden for their use; or (3)
preparation of a Special
Status Plant Translocation Plan. If translocation is
selected, a qualified
Restoration Biologist shall be retained to prepare a
Special Status Plant
Species Translocation Plan for approval by the City. The Special Status Plant
Translocation Plan shall include the following topics: (1) responsibilities and
qualifications of the personnel to implement and supervise the plant, (2)
mitigation site selection criteria, (3) methods for
seed/bulb/corm or
individual collection; (4) site preparation and planting implementation, (5)
implementation schedule, (6) maintenance plan/guidelines, (7) monitoring
plan, and (8) long-term preservation. If seeds/bulbs/corms or individuals will
be collected as part of the mitigation strategy, a
qualified Restoration
Biologist/Seed Collector shall collect seed/bulbs/corms or individuals for
translocation and shall store them in appropriate conditions to maintain the
viability of the seed.
If plants with a CRPR of 3 or 4 are observed in the impact area and cannot be
avoided, the impact shall be considered less than significant and no further
measures shall be required. However, it should be noted that any Southern
California black walnut (CRPR 4.2) meeting the definition of a mature
significant tree shall be subject to the requirements of MM BIO-10.
MMBIO‐3 CrotchBumbleBee:If CDFW determines that listing of the Crotch bumble bee
is not warranted prior to or during implementation of the project activities, this
measure shall not be required. Until CDFW makes a
determination, or if CDFW
determines that listing of the Crotch bumble bee is warranted, the following measure
shall be required.
Prior to vegetation clearing or grading, homeowners requiring grading permits shall
retain a qualified Biologist to conduct pre-construction focused surveys for Crotch
bumble bee within 100 feet of Project impact areas. The survey shall be performed
during the appropriate window for this species (i.e., March to July). Three visual
surveys will be conducted by a qualified Biologist. Surveys shall be conducted at least
two hours after sunrise and three hours before sunset during suitable weather
conditions. Sunny days with temperatures greater than 60 degrees Fahrenheit and
wind speeds less than 8 mph are optimal, but partially cloudy days or overcast
conditions are permissible if a person’s shadow is visible.
Surveys shall not be
conducted during wet, foggy, or rainy conditions. Meandering transects shall be
walked slowly within the Project survey area to obtain a 100% survey cover. Transect
spacing will depend on the habitat. The Biologist will search for Crotch’s bumble bee
activity and the presence of ground nests. Cavities such as mammal burrows shall be
inspected with binoculars for evidence of bumble bee use. If multiple exiting/entering
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bumble bees are observed at a cavity, further observation shall occur until nesting is
confirmed (e.g. multiple individuals entering the cavity).
If no Crotch bumble bee are observed, no further action will be required within the
year that the focused survey is conducted. Because Crotch bumble bee moves ground
nests annually, the pre-construction focused survey shall be repeated if construction
does not begin before the spring (i.e., March 1) following the previous focused survey.
If Crotch bumble bee is present, the Project Applicant shall consult with CDFW to
determine if a permit (2081) will be needed. If a ground nest is observed, it shall be
protected in place until it is no longer active as determined by a Biologist. An initial
protective buffer of at least 100 feet shall be established around the active ground
nest until CDFW can be consulted. A qualified Biologist shall determine the protective
buffer distance needed depending on the location with respect to construction
activities and the type of construction activities occurring; CDFW shall approve the
protective buffer distance needed.
A Letter Report shall be prepared to document the results of the pre-construction
surveys and shall be provided to CDFW within 30 days of MMBIO‐ completion of the survey. 4 CoastalCaliforniaGnatcatcher:Prior to vegetation clearing or construction,
homeowners with projects that would impact coastal sage scrub shall retain a
qualified Biologist with the appropriate permit to conduct focused surveys for coastal
California gnatcatcher within 500 feet of Project impact areas.
The survey shall be
performed in accordance with the most current protocols approved by the USFWS.
To assist homeowners in the BSA, the HOA could retain a qualified Biologist to
conduct a focused coastal California gnatcatcher survey for the entire BSA. Following
the survey, a map overlay could be made showing occupied habitat to be avoided in
order to avoid the need for further mitigation. Conducting a focused coastal California
gnatcatcher survey throughout the BSA would provide an
efficiency of scale that
would be more cost-effective than the preparation of individual surveys by lot.
If coastal California gnatcatchers are not observed within 500 feet of the project
impact area, no further measures would be needed.
If coastal California gnatcatchers are observed within 500 feet of the project impact
area, then impacts on coastal sage scrub should be avoided or minimized to the extent
practicable. If avoidance of coastal sage scrub is not feasible, then consultation with
the USFWS (Section 7 or Section 10) shall be required to determine the appropriate
mitigation required prior to removal of coastal sage scrub.
Potential mitigation
options shall include payment of an in-lieu mitigation fee to an approved mitigation
bank; long-term preservation of existing coastal sage scrub habitat occupied by
coastal California gnatcatcher at an on-site or off-site location; or another strategy as
approved by the USFWS. Coastal sage scrub shall be replaced at a minimum 1:1 ratio,
or as otherwise determined by the USFWS. The USFWS approval (under Section 7 or
10 of the FESA) must be obtained and mitigation must be secured (i.e., in-lieu
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mitigation fee paid or demonstration of long-term preservation has been obtained)
prior to issuance of a grading permit.
MMBIO‐5 BurrowingOwl:Per the StaffReport
onBurrowingOwl Mitigation (CDFW
2012), the homeowner shall retain a qualified Biologist to conduct a pre-construction
survey for the burrowing owl no less than 14 days prior to any ground disturbance
by the Project and no greater than 30 days prior to ground disturbance in each Project
area (year-round). The pre-construction survey shall include the area of proposed
disturbance plus a 500-foot buffer (if access is available).
If an active burrow is observed outside the breeding season (i.e., September 1 to
January 31) and it cannot be avoided, the burrowing owl shall be passively excluded
from the burrow following methods described in CDFW
guidelines. One-way doors
shall be used to exclude owls from the burrows; doors shall be left in place for at least
48 hours. Once the burrow is determined to be unoccupied, the burrow shall be closed
by a qualified Biologist who shall excavate the burrow using hand tools.
If an active burrow is observed outside the breeding season (i.e., September 1 to
January 31) and it can be avoided, the Biologist shall determine an appropriate
protective buffer for the burrow. The designated protective buffer will be clearly
marked in the field and mapped as an Environmentally Sensitive Area on construction
plans.
If an active burrow is observed during the breeding season (February 1 to August 31),
the active burrow shall be protected until nesting activity has ended (i.e., all young
have fledged from the burrow). The Biologist shall determine the appropriate
protective buffer for the burrow (minimum 300 to 500 feet) based on the sensitivity
of the individuals and the type of construction activities. The designated protective
buffer will be clearly marked in the field and mapped as an Environmentally Sensitive
Area on construction plans.
Upon completion of the pre-construction burrowing owl survey, a Letter Report shall
be prepared and submitted to CDFW documenting the results of the survey within
two weeks of completion of the survey effort. If an active burrow is observed, the
Letter Report shall include a description of the protective buffer that has been
designated.
MMBIO‐6 NestingBirds/Raptors:To the extent possible,
vegetation clearing shall be
conducted during the non-breeding season (i.e., September 16 to January 31) in order
to minimize impacts on nesting birds. If vegetation clearing would be initiated during
the breeding season for nesting birds/raptors (i.e., February 1– September 15), the
construction activity shall be conducted in compliance with the Migratory Bird Treaty
Act and/or Sections 3503, 3503.5, and 3513 of the
CaliforniaFishandGameCode.
In order to avoid direct impacts on active nests, a pre-construction survey shall be
conducted by a qualified Biologist (one with experience conducting nesting bird
surveys) for nesting birds and/or raptors within three days prior to vegetation MUNICIPAL CODE TEXT AMENDMENT 20-
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clearing or initiation of project activities. The nesting bird survey area shall include a
buffer of 100 feet around the work area for nesting birds and a buffer of 500 feet
around the work area for nesting raptors and coastal California gnatcatcher (if there
is coastal sage scrub). If the Biologist does not find any active nests within or
immediately adjacent to the impact area, the vegetation clearing/construction
activities shall be allowed to proceed.
If the Biologist finds an active nest within or immediately adjacent to the construction
area and determines that the nest may be impacted, or
breeding activities
substantially disrupted, the Biologist shall determine an appropriate protective
buffer zone around the nest depending on the sensitivity of the species and the nature
of the construction activity. The protective buffer shall be 25–100 feet for nesting
birds and 200–500 feet for special status bird species or nesting raptors. The active
nest shall be protected until nesting activity has ended as determined by a qualified
Biologist (i.e., nestlings have fledged or the nest has failed).
Encroachment into the
protective buffer around a known nest shall only be allowed if the Biologist
determines that the proposed activity would not disturb the nest occupants.
MMBIO‐7 RoostingBats:The bats with potential to roost in the BSA (i.e., western red
bat and western mastiff bat) roost in trees. If native or non-native trees are proposed
for removal, then either tree removal shall be conducted between September and
November (to avoid the bat maternity and the bat hibernation season), or the tree
removal will occur under the supervision of a qualified Biologist and will utilize
phased tree trimming. First, branches are removed from the trees; lowered to the
ground as gently as possible; and left overnight on the ground to allow bats to escape.
After they have been left overnight for at least one night, the branches can be chipped
and/or removed from the site. The day after branches are cut from the tree, the tree
trunk can be cut; lowered to the ground as gently as possible; and left overnight on
the ground to allow bats to escape. After the trunk has been left overnight for at least
one night, the trunk can be cut into pieces, chipped, and/or removed from the site.
MMBIO‐8 NightLighting:Lighting plans shall be submitted to the City for review to
ensure that night lighting is focused within the usable backyard space and does not
shine into adjacent habitat areas to the extent practicable. Exterior lighting adjacent
to natural open space shall be diffused, shielded, and low intensity and located so that
direct rays are confined to the developed areas.
MMBIO‐9 BirdStrikes:If landscaping or improvements includes installation of glass
walls in outdoor areas within 200 feet of coastal sage scrub or native woodlands,
landscaping plans shall demonstrates that window/glass used are designed to
minimize bird strikes. This may include measures such as angling of windows/glass
downward so that the windows reflect the ground instead of the surrounding habitat
or sky or the use of bird-safe glass that exhibits the “2×4 Rule”, as defined by the
American Bird Conservancy. The 2 X 4 Rule describes the distance between elements
making up a pattern applied to windows for the purpose of preventing bird strikes.
To be effective, the pattern must uniformly cover the entire window and consist of
elements of any shape (e.g., lines, dots, other geometric figures) separated by no more
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than 2 inches if oriented in horizontal rows, or 4 inches if oriented in vertical columns
(i.e., the 2 X 4 Rule). These patterns reduce bird-window collisions when applied to
the outer surface of reflective panes. Greater spacing between pattern elements
increases the risk of a strike and casualties. Bird-safe glass may include a uniformly
dense dot, striped, or grid pattern created as ceramic frit on the external surface of
the window or a uniformly dense dot, striped, or grid patterns of clear UV-reflecting
and UV-absorbing film applied to the exterior of windows. Opaque glass can also be
used. It should be noted that single decals (e.g., falcon silhouettes or large eye
patterns) are ineffective and shall not be used unless the entire glass surface is
uniformly covered with the objects or patterns (Klem 1990).
MMBIO‐10 ProtectedTrees:Removal of mature significant trees protected by the City of
San Dimas Municipal Code shall be avoided to the extent practicable. Mature
significant trees may include native or non-native species in developed or
undeveloped areas, if they meet the size requirement for a mature significant tree
under the City’s code. Prior to removal of mature significant trees, homeowners shall
follow the procedures for tree removal described in San Dimas Municipal Code
18.162 (see
https://file.lacounty.gov/SDSInter/acwm/216023_SanDimasMC.pdf, Chapter 18.162: Tree Preservation). This Code requires that a tree inventory be
prepared by a Certified Arborist to map trees on the
property. If determined
necessary through the City’s review process, conditions for removal of a mature
significant tree may include tree replacement at a 2:1 ratio with a minimum 15-gallon
box tree(s), or other replacement of equivalent value and size, within the subject
property. No grading or building permits shall be issued and no mature significant
trees shall be removed until approved as described in San Dimas Municipal Code
18.162. San Dimas Municipal Code 18.162 also requires protection of existing mature
significant trees during project activities and prohibits topping and/or excessive
pruning of a mature significant tree that would result in significant damage to the tree
to the point that it may limit future growth, as determined by a Certified Arborist.
To assist homeowners in the BSA, the Home Owner’s Association (HOA) could retain
a Certified Arborist to prepare a Native Tree Inventory for the entire BSA. Following
the preparation of the Native Tree Inventory, a map overlay could be made showing
native trees to be avoided in order to avoid the need for tree permitting. The
preparation of a single Native Tree Inventory throughout the BSA would provide an
efficiency of scale that would be more cost-effective than the preparation of individual
tree surveys by lot.
MMBIO‐11 JurisdictionalPermitting:If the project activities would occur within 200
feet of a potential drainage, including potential jurisdictional features shown on
Figure 7, or other topographic features that may comprise a bed, bank, or channel, a
formal Jurisdictional Delineation shall be prepared by a qualified Regulatory
Specialist. The project shall follow avoidance and protective measures described
under MM BIO-1.
To assist homeowners in the BSA, the HOA could retain a Regulatory Specialist to
prepare a Jurisdictional Delineation for the entire BSA. This would identify MUNICIPAL CODE TEXT AMENDMENT 20-
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jurisdictional features and associated regulatory authority for each lot. Following the
preparation of the Jurisdictional Delineation, a map overlay could be made showing
jurisdictional features to be avoided in order to avoid the need for further regulatory
permitting. The preparation of a single Jurisdictional Delineation throughout the BSA
would provide an efficiency of scale that would be more costeffective than the preparation of individual Jurisdictional Delineations by lot.
However, the
Jurisdictional Delineation may need to be periodically
updated if regulatory
requirements change over time.
If project activities would impact features under the jurisdiction of the USACE (if
applicable), CDFW, and/or RWQCB, the homeowner shall
obtain all necessary
permits for impacts to jurisdictional areas. Potential mitigation options shall include
payment of an in-lieu mitigation fee to an approved mitigation bank; long-term
preservation of existing jurisdictional habitat at an on-site or off-site location; or
another strategy as approved by the USACE, CDFW, and/or RWQCB. Jurisdictional
areas shall be replaced at a minimum 1:1 ratio, or as otherwise determined by the
resource agencies during permitting. The appropriate jurisdictional permits must be
obtained and mitigation must be secured (i.e., in-lieu
mitigation fee paid or
demonstration of long-term preservation has been obtained) prior to issuance of a
grading or building permit.
MMBIO‐12 WaterQuality. The following Best Management
Practices (BMPs) shall be used during construction
activities:
Erosion control measures shall be used to minimize erosion (e.g., temporary
installation of silt fences, straw wattles, fiber rolls, gravel bags, etc.). Wattles used for erosion control shall be biodegradable and certified as weedfree.
Spoils shall be stockpiled in disturbed areas lacking
native vegetation. Construction vehicles shall be washed prior to delivery to the site to prevent weed
seeds from entering the construction area. Track-clean or other methods of
vehicle cleaning shall be used by the construction contractor to prevent weed
seeds from entering/exiting the site on vehicles.
Fueling and equipment maintenance shall occur on existing streets or other
developed areas. No equipment maintenance shall occur
within or adjacent to
drainages or native vegetation. Contractor equipment shall be checked for leaks
prior to operation and repaired as necessary.
Any spilled hazardous materials shall be immediately cleaned and hazardous
materials properly disposed of. All trash and debris shall be picked up and removed from the site at the end of
each workday. All work shall be conducted during daylight hours only.
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Trenches and excavations shall be covered at the end of each work day or a wood
plank shall be placed from the bottom of the trench to the ground level to allow
MMBIO‐ wildlife to escape from the trench/excavation. 13 InvasiveSpecies: Landscaping designs shall be submitted to the City for
review to ensure that no invasive, exotic plant species are used in proposed
landscaping (i.e., those listed on the California Invasive Plant Council’s Invasive Plant
Inventory with a Risk Rating of “High” [Cal-IPC 2023]). The review may be conducted
by City staff or a qualified Biologist. If a qualified Biologist conducts the review,
suitable substitutes should be suggested for any plants not allowed.
4.1.6 LEVELOFSIGNIFICANCEAFTERMI
TIGATION With implementation of MM BIO-1 through BIO-13, potential impacts associated with
biological resources would be reduced to levels considered less than significant. No
significant unavoidable impacts to biological resources would result from implementation
of the Project.
R:\Projects\SAN04\3SAN040200\Documentation\ISMND\San-Dimas_Recirculated-DraftISMND-021624.docx MUNICIPAL CODE TEXT AMENDMENT 20-
0005 PROJECT
4-89
RECIRCULATED DRAFT INITIAL STUDY/MITIGATED
NEGATIVE DECLARATION
Appendix D
Mitigation Monitoring and Reporting
Program
October 2024
Mitigation Measures Applicable to Each
Lot Number Mitigatio
n
Mitigatio Measure
n
Measure
BIO-2:
BIO-6:
Nesting
Mitigation
Birds/
Mitigatio
n
Measure
BIO-7:
Mitigation
Measure
BIO-11:
Jurisdictiona
Measure
l Permitting
BIO-12:
(SurveyJurisdictiona
Quality
l
Mitigatio
n
Measure
BIO-1:
Mitigation Mitigation Measure
BIO-3:
Crotch
Bumble
Bee
Measure
BIO-4:
Coastal
Mitigation Mitigation MitigationMitigatio
n
Mitigatio
n
Measure
BIO-13:
Invasive
Species
Special Measure
BIO-5
Raptors
(Constructi Bats
California Burrowing on Timing/
(Constructi Night
Gnatcatche Owl (Pre- Pre- on
Lighting
r (Focused constructio constructio
Timing/B
Roosting Measure
BIO-8:
Measure
BIO-9:
Bird
Measure
BIO-10:
Protecte
d
Trees
Environment
Status
ally Sensitive
Plant
Species
(Design/Plan
(Focused
Water
Areas Strikes
Vegetation Types
within
Lot Number Potential
Impact Area1
(Focused
Survey)
(Design/Pla (Design/Pla
(Tree
(Constructi
Check) Survey) Survey) n) n (Design/Plan
Survey)
MPs) n
Check)
n
Check)
Survey) Delineation)2 on
BMPs)
Check)
Lot 1
Lot 2
Lot 3
Lot 4
Lot 5
Lot 6
Lot 7
Lot 8
Lot 9
Lot 10
None 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
P
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Woodland,
Ruderal
Woodland,
Ruderal
Woodland,
Ruderal
Ruderal
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
Ruderal
Woodland, Ruderal
Woodland, Ruderal
Woodland, Ruderal
CSS, Woodland,
Ruderal
X
X
X
X
X
X
X
X X
X
CSS/Cactus Scrub,
Woodland,
Ruderal
X X X X X X X X X X X X Lot 11
Lot 12
Lot 13
Lot 14
Lot 15
Lot 16
Lot 17
Lot 18
Woodland 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
P
P
P
P
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Woodland,
Ruderal
Woodland,
Ruderal
Woodland,
Ruderal
Woodland,
Ruderal
Woodland
Woodland,
Ruderal
Mitigation Measures Applicable to Each
Lot Number Mitigatio
n
Mitigatio Measure
n
Measure
BIO-2:
BIO-6:
Nesting
Mitigation
Birds/
Mitigatio
n
Measure
BIO-7:
Mitigation
Measure
BIO-11:
Jurisdictiona
Measure
l Permitting
BIO-12:
(SurveyJurisdictiona
Quality
l
Mitigatio
n
Measure
BIO-1:
Mitigation Mitigation Measure
BIO-3:
Crotch
Bumble
Bee
Measure
BIO-4:
Coastal
Mitigation Mitigation MitigationMitigatio
n
Mitigatio
n
Measure
BIO-13:
Invasive
Species
Special Measure
BIO-5
Raptors
(Constructi Bats
California Burrowing on Timing/
(Constructi Night
Gnatcatche Owl (Pre- Pre- on
Lighting
r (Focused constructio constructio
Timing/B
Roosting Measure
BIO-8:
Measure
BIO-9:
Bird
Measure
BIO-10:
Protecte
d
Trees
Environment
Status
ally Sensitive
Plant
Species
(Design/Plan
(Focused
Water
Areas Strikes
Vegetation Types
within
Lot Number Potential
Impact Area1
(Focused
Survey)
(Design/Pla (Design/Pla
(Tree
(Constructi
Check) (Design/Plan
X
Survey) Survey) n) n
Survey)
MPs) n
Check)
n
Check)
Survey) Delineation)2 on
BMPs)
Check)
Lot 19
Lot 20
Lot 21
Lot 22
Lot 23
Lot 24
Lot 25
Lot 26
Lot 27
Lot 28
Lot 29
Lot 30
Lot 31
Lot 32
Lot 33
Lot 34
Lot 35
Lot 36
Woodland 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
P
P
P
P
P
X
P
P
P
P
P
P
P
P
P
P
P
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
Woodland X X X
Woodland X X X
Woodland, Ruderal
CSS, Woodland,
Ruderal
CSS, Woodland,
Ruderal
Woodland, Ruderal
Woodland, Ruderal
Woodland
X X
X
X
X
X
X X
X X X
X X X
X X X
X X X
X X X
CSS, Woodland,
Ruderal
CSS, Ruderal
X X
X
X
X
X
X
X
X
X
X
X X
X X
CSS,
Ruderal
X X
CSS, Woodland,
Ruderal
Woodland, Ruderal
Woodland, Ruderal
None
X X
X
X
X
X
X
X
X X
X X
X
Woodland X X X X X X X X
None X
Mitigation Measures Applicable to Each
Lot Number Mitigatio
n
Mitigatio Measure
n
Measure
BIO-2:
BIO-6:
Nesting
Mitigation
Birds/
Mitigatio
n
Measure
BIO-7:
Mitigation
Measure
BIO-11:
Jurisdictiona
Measure
l Permitting
BIO-12:
(SurveyJurisdictiona
Quality
l
Mitigatio
n
Measure
BIO-1:
Mitigation Mitigation Measure
BIO-3:
Crotch
Bumble
Bee
Measure
BIO-4:
Coastal
Mitigation Mitigation MitigationMitigatio
n
Mitigatio
n
Measure
BIO-13:
Invasive
Species
Special Measure
BIO-5
Raptors
(Constructi Bats
California Burrowing on Timing/
(Constructi Night
Gnatcatche Owl (Pre- Pre- on
Lighting
r (Focused constructio constructio
Timing/B
Survey) n) n Survey) MPs)
Roosting Measure
BIO-8:
Measure
BIO-9:
Bird
Measure
BIO-10:
Protecte
d
Trees
Environment
Status
ally Sensitive
Plant
Water
Areas
(Design/Plan
(Focused
Check)
Survey)
Species Strikes
Vegetation Types
within
Lot Number Potential
Impact Area1
(Focused
Survey)
(Design/Pla (Design/Pla
(Tree
n Check) n Check)
Survey)
(Constructi
Delineation)(Design/Plan 2 on BMPs)
Check)
None [all within
Open Conservation
Space
Easement
]
1 CSS: Coastal sage scrub vegetation types include California sagebrush scrub (disturbed), California buckwheat scrub, California buckwheat scrub (disturbed), California sagebrush – California buckwheat scrub, California sagebrush –
black sage scrub, and coast prickly pear scrub.
1 1
2 2
Woodland: Woodland vegetation types include California walnut groves, California walnut groves (disturbed), and coast live oak woodland (disturbed).
Ruderal: Ruderal vegetation types include upland mustards or star-thistle fields and upland mustards or star-thistle fields (disturbed); these areas are dominated by non herbaceous species.
X - This mitigation measure would be required for the parcel. P - A formal jurisdictional delineation was not conducted; therefore, it is unknown whether these parcels contain drainage features that were not identified by the National Wetlands project would impact a drainage feature, a jurisdictional delineation Inventory (see Exhibit 10). If a proposed homeowner may be required.
Color Code for Type of Mitigation
Design/Plan Check
Focused
Surveys
Pre-construction
Survey
Construction
Timing/BMP
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
BIOLOGICAL
MM BIO- RESOURCES
1 Prior to and
during
ground
disturbance,
vegetation
clearing,
and other project
Environmentally Sensitive
Areas
City
Planning
Avoidance. Impacts on sensitive natural Division
communities (i.e., coast
prickly pear scrub, California walnut groves, and
California walnut
groves [disturbed]), jurisdictional features,
Threatened and
Endangered and CRPR 1B and 2B plant locations shall
be avoided or
minimized to the extent practicable during Project
design. It is
recommended that other coastal sage scrub and
coast live oak
woodland communities and CRPR 3 and 4 locations
also be avoided
to the extent practicable. Project plans shall be
submitted to the City
demonstrating that sensitive natural communities,
jurisdictional
features, special status plant locations, and other
native vegetation
types have been avoided to the extent practicable. If
any sensitive
natural communities, jurisdictional features, special
status plant
locations, or other native vegetation types are located on the lot (or
within 500 feet of the project on an adjacent lot), they will be shown
on project plans and labeled Environmentally
Sensitive Areas. If the
sensitive natural communities, jurisdictional features, special status
plant locations, or other native vegetation types are
present on the
lot, the plans shall also include a note with the
information below
with regard to “Protection” of these resources.
construction
activities
Protection. If a future homeowner project
involves vegetation
clearing and/or the use of mechanized equipment,
and the lot has
sensitive habitats (i.e., coast prickly pear scrub,
California walnut
groves, and California walnut groves [disturbed]),
jurisdictional
features, or Threatened and Endangered and CRPR
1B or 2B plant
locations present on the lot (or within 500 feet of the project on an
adjacent lot), the limits shall be marked prior to the
initiation of
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
project activities. It is also recommended that this
protection also be
implemented if other native vegetation types (i.e.,
coastal sage scrub
and coast live oak woodland) or CRPR 3 or 4 plant
locations are
present on the lot. Sensitive natural communities,
jurisdictional
features, special status plant locations, as well as
other native
vegetation types (i.e., Environmentally Sensitive
Areas), outside the
limits shall be avoided during project activities.
No equipment,
spoils piles, materials storage, or other disturbance
shall occur
within sensitive natural communities,
jurisdictional features,
special status plant locations or other native
vegetation types (i.e.,
Environmentally Sensitive Areas). Additionally, a
note shall be
added to construction plans stating the following: ”All wildlife shall
be allowed to escape the work site unharmed
(e.g., snakes,
woodrats, etc.). No wildlife shall be handled unless
moved by a
qualified Biologist; a push broom may be used to guide
wildlife away
from the work site and toward nearby habitat areas, if
needed.”
MM BIO2Prior to
vegetation
removal
Special Status
Plants:
City
Planning
Prior to removal of vegetation (including coastal sage Division scrub, native
woodland, non-native woodland, or non-native
herbaceous
vegetation types) for projects requiring a City
permit, the
homeowner shall retain a qualified Botanist to
conducted focused
surveys for special status plant species within the
lot. The survey
shall be performed during the target species’ peak
blooming period
in accordance with the most current protocols
approved by CDFW
and CNPS. Because blooming periods overlap,
generally one early
spring (i.e., March/April) and one late
spring/early summer
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
(May/June) survey can be conducted to cover all target
species. The
peak blooming time varies based on the rainfall of the
year. To assist homeowners in the BSA, the HOA could
retain a qualified
Botanist to conduct a special status plant survey for
the entire BSA
during a year of adequate rainfall. This would identify special status
plant locations for each lot. Following the survey, a
map overlay
could be made showing special status plant locations
to be avoided
in order to avoid the need for further mitigation. The
preparation of
a single special status plant survey throughout the
BSA would
provide an efficiency of scale that would be more costeffective than the preparation of individual special status plant
surveys by lot. It
would also allow for a more accurate assessment of
significance for
CRPR 1 and 2 species with regard to the presence of
species in the
BSA as compared to species in the project region.
If no special status plant species are located on the
lot, no further
measures would be required.
If there is a special status plant location present
on the lot,
avoidance and protective measures described under
MM BIO-1 shall
be followed. If a special status plant location is observed within the project
impact area, the qualified Botanist Biologist
conducting the survey
shall evaluate the significance with respect to the
number of
individuals that would be impacted and the status of
the species.
• If Nevin’s barberry or thread-leaved
brodiaea are
observed in the impact area and cannot
be avoided,
any impact on these species shall be
considered
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
significant. Prior to issuance of City permits
allowing
for impacts on Nevin’s barberry or
thread-leaved
brodiaea, the homeowner shall
obtain take
authorization from both the USFWS and
CDFW. The
homeowner shall present the fully
executed take
authorization to the City and shall
comply with
measures and compensatory mitigation
required by
the take authorization. One of the
following
mitigation options shall be required: (1)
payment of
an in-lieu mitigation fee to an approved
mitigation
bank with credits for the subject
species; or (2)
preparation of a Special Status Plant
Translocation
Plan. If translocation is selected, a
qualified
Restoration Biologist shall be retained to
prepare a
Special Status Plant Species Translocation
Plan for
approval by the USFWS and CDFW. The
Special Status
Plant Translocation Plan shall include the
following
topics: (1) responsibilities and
qualifications of the
personnel to implement and supervise the
plant, (2)
mitigation site selection criteria, (3)
methods for
seed/bulb/corm or individual collection;
(4) site
preparation and planting
implementation, (5)
implementatio
n
schedule, (6) maintenance
plan/guidelines, (7) monitoring plan, and
(8) longterm preservation of the mitigation
site. If
seeds/bulbs/corms or individuals will be
collected as
part of the mitigation strategy, a qualified
Restoration
Biologist/See
d
Collector shall collect
seed/bulbs/corms or individuals for
translocation
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
and shall store them in appropriate
conditions to
maintain the viability of the seed. • If plants with a CRPR of 1B or 2B are observed in the
impact area and cannot be avoided, the
determination
of significance will be based on the
size of the
impacted population (including all impacts
within the
BSA to date) relative to the regional
population size.
The regional population size will be
determined
based on the current total population sizes
(excluding
occurrences considered extirpated) of
CNDDB and
CCH records from the USGS Baldwin Park,
San Dimas,
Ontario, La Habra, Yorba Linda, Prado
Dam, Azusa,
Glendora, and Mt. Baldy 7.5-minute
quadrangles. If
the impacted population of CRPR 1B or
2B species
within the BSA represents less than five
percent of the
regional population, the impact will be
considered
less than significant and no mitigation
will be
required. If the impacted population of
CRPR 1B or 2B
species represents five percent or
more of the
regional population, compensatory
mitigation shall
be required. One of the following
mitigation options
shall be required: (1) payment of an in-lieu
mitigation
fee to an approved mitigation bank with
credits for
the subject species; (2) collection of
seeds/bulbs/corms or individuals by a
qualified Seed
Collector and donation to the
California Botanic
Garden for their use; or (3) preparation
of a Special
Status Plant Translocation Plan. If
translocation is
selected, a qualified Restoration
Biologist shall be
retained to prepare a Special Status
Plant Species
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
Translocation Plan for approval by the City.
If desired,
the City may seek input from CDFW in
an advisory
role in review of the adequacy of the
Special Status
Plant Translocation Plan. The Special
Status Plant
Translocation Plan shall include the
following topics:
(1) responsibilities and qualifications
of the
personnel to implement and supervise the
plant, (2)
mitigation site selection criteria, (3)
methods for
seed/bulb/corm or individual collection;
(4) site
preparation and planting
implementation, (5)
implementatio
n
schedule, (6) maintenance
plan/guidelines, (7) monitoring plan, and
(8) longterm preservation of the mitigation
site. If
seeds/bulbs/corms or individuals will be
collected as
part of the mitigation strategy, a qualified
Restoration
Biologist/See
d
Collector shall collect
seed/bulbs/corms or individuals for
translocation
and shall store them in appropriate
conditions to
maintain the viability of the seed. If plants with a CRPR of 3 or 4 are observed in the
impact area and cannot be avoided, the
impact shall
be considered less than significant and
no further
measures shall be required. However, it
should be
noted that any Southern California
black walnut
(CRPR 4.2) meeting the definition of
a mature
significant tree shall be subject to the
requirements of
MM BIO-10.
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
MM BIO3Prior to and
during
ground
disturbance
Crotch’s Bumble
Bee:
City
Planning
If CDFW determines that listing of the Crotch’s Division bumble bee is not
warranted prior to or during implementation of
the project
activities, this measure shall not be required. Until
CDFW makes a
determination, or if CDFW determines that listing of
the Crotch’s
bumble bee is warranted, the following measure shall
be required.
Prior to vegetation clearing or grading,
homeowners requiring
grading permits shall retain a qualified Biologist
(i.e., one with a
Memorandum of Understanding to handle the
species) to conduct
pre-construction focused surveys for Crotch’s
bumble bee
throughout the lot. Focused surveys shall follow
CDFW’s Survey
Considerations for California Endangered Species
Act Candidate
Bumble Bee Species (CDFW 2023). The survey shall
be performed
during the appropriate window for this species
(i.e., April to
August). Three visual surveys will be conducted
by a qualified
Biologist. Surveys shall be conducted at least two hours after sunrise
and three hours before sunset during suitable
weather conditions.
Sunny days with temperatures greater than 60
degrees Fahrenheit
and wind speeds less than 8 mph are optimal, but
partially cloudy
days or overcast conditions are permissible if a
person’s shadow is
visible. Surveys shall not be conducted during wet,
foggy, or rainy
conditions. Meandering transects shall be walked
slowly within the
Project survey area to obtain a 100% survey cover.
The Biologist
will search for Crotch’s bumble bee activity and the
presence of
ground nests. Cavities such as mammal burrows shall
be inspected
with binoculars for evidence of bumble bee use.
If multiple
exiting/entering bumble bees are observed at a
cavity, further
observation shall occur until nesting is confirmed
(e.g. multiple
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
individuals entering the cavity). Survey results,
including negative
findings, shall be submitted to CDFW and the
City prior to
implementing any ground-disturbing activities. If no Crotch’s bumble bee are observed, no further action will be
required within the year that the focused survey
is conducted.
Because Crotch’s bumble bee moves ground nests
annually, the
pre-construction focused survey shall be repeated if
construction
does not begin before the spring (i.e., March 1)
following the
previous focused survey.
If Crotch’s bumble bee is present, no work shall
commence until the
homeowner coordinates the Project Applicant shall
consult with
CDFW and obtains the appropriate take authorization
pursuant to
Fish and Game Code 2080. Prior to City approval of the
homeowner
project, and prior to any vegetation removal or
ground-disturbing
activities, the homeowner shall provide a fully
executed take
authorization from CDFW. During project
construction, the
homeowner shall comply with the measures
detailed in the take
authorization issued by CDFW.
MM BIO4Prior to
vegetation
clearing or
Coastal California Gnatcatcher: Prior to vegetation clearing or City Planning
construction, homeowners with projects that would impact coastal Division
construction in areas sage scrub shall retain a qualified Biologist with the appropriate that would
impact
coastal sage
scrub
permit to conduct focused surveys for coastal
California gnatcatcher
within 500 feet of Project impact areas. The
survey shall be
performed in accordance with the most current
protocols approved
by the USFWS.
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
Completio
n
To assist homeowners in the BSA, the HOA could
retain a qualified
Biologist to conduct a focused coastal California
gnatcatcher survey
for the entire BSA. Following the survey, a map
overlay could be
made showing occupied habitat to be avoided in order
to avoid the
need for further mitigation. Conducting a focused
coastal California
gnatcatcher survey throughout the BSA would provide
an efficiency
of scale that would be more cost-effective than the
preparation of
individual surveys by lot.
If coastal California gnatcatchers are not observed
within 500 feet
of the project impact area, no further measures would
be needed. If coastal California gnatcatchers are observed within 500 feet of the
project impact area, then impacts on coastal sage
scrub should be
avoided or minimized to the extent practicable. If
avoidance of
coastal sage scrub is not feasible, then consultation
with
the USFWS (Section 7 or Section 10) shall be required
to determine
the appropriate mitigation required prior to removal
of coastal sage
scrub. Potential mitigation options shall include
payment of an inlieu mitigation fee to an approved mitigation bank; long-term
preservation of existing coastal sage scrub habitat
occupied by
coastal California gnatcatcher at an on-site or offsite location; or another strategy as approved by the USFWS. Coastal
sage scrub shall
be replaced at a minimum 1:1 ratio,
or as otherwise determined by the USFWS. The
USFWS approval
(under Section 7 or 10 of the FESA) must be obtained
and mitigation
must be secured (i.e., in-lieu mitigation fee paid or
demonstration of
long-term preservation has been obtained) prior to
issuance of a
grading permit. Page 1907 – 2053
San Dimas Municipal Code Text Amendment
(20-0005)
Mitigation Monitoring and Reporting
Program
Mitigatio
n
Measure
Responsible
for
Monitoring
Timing Measur
e
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MM BIO5Prior to construction
Burrowing Owl:
City
Planning
Per the Staff Report on Burrowing Owl Mitigation Division (CDFW 2012), the
homeowner shall retain a qualified Biologist to
conduct a preconstruction survey for the burrowing owl no less than 14 days
prior to any ground disturbance by the Project and no
greater than
30 days prior to ground disturbance in each
Project area (yearround). The pre-construction survey shall include the area of
proposed disturbance plus a 500-foot buffer (if access
is available).
If an active burrow is observed outside the breeding
season (i.e.,
September 1 to January 31) and it cannot be avoided,
the burrowing
owl shall be passively excluded from the burrow
following methods
described in CDFW guidelines. One-way doors
shall be used to
exclude owls from the burrows; doors shall be left
in place for at
least 48 hours. Once the burrow is determined to be
unoccupied, the
burrow shall be closed by a qualified Biologist who
shall excavate
the burrow using hand tools.
If an active burrow is observed outside the breeding
season (i.e.,
September 1 to January 31) and it can be avoided, the
Biologist shall
determine an appropriate protective buffer for the
burrow. The
designated protective buffer will be clearly marked in
the field and
mapped as an Environmentally Sensitive Area on
construction
plans.
If an active burrow is observed during the
breeding season
(February 1 to August 31), the active burrow shall be
protected until
nesting activity has ended (i.e., all young have
fledged from the
burrow). The Biologist shall determine the
appropriate protective
buffer for the burrow (minimum 300 to 500 feet)
based on the
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sensitivity of the individuals and the type of
construction activities.
The designated protective buffer will be clearly
marked in the field
and mapped as an Environmentally Sensitive Area on
construction
plans.
Upon completion of the pre-construction burrowing
owl survey, a
Letter Report shall be prepared and submitted
to CDFW
documenting the results of the survey within
two weeks of
completion of the survey effort. If an active burrow is observed, the
Letter Report shall include a description of the
protective buffer that
has been designated.
MM BIO6Prior to project
activities
including
grading,
demolition,
vegetation
clearing,
etc.
Nesting
Birds/Raptors:
City
Planning
To the extent possible, vegetation clearing shall Division be conducted
during the non-breeding season (i.e., September 16
to January 31)
in order to minimize impacts on nesting birds. If
vegetation clearing
would be initiated during the breeding season
for nesting
birds/raptors (i.e., February 1–September 15), the
construction
activity shall be conducted in compliance with the
Migratory Bird
Treaty Act and/or Sections 3503, 3503.5, and 3513 of
the California
Fish and Game Code.
In order to avoid direct impacts on active nests, a preconstruction survey shall be conducted by a qualified
Biologist (one with
experience conducting nesting bird surveys) for
nesting birds
and/or raptors within three days prior to
vegetation clearing or
initiation of project activities. The nesting bird
survey area shall
include a buffer of 100 feet around the work area for
nesting birds
and a buffer of 500 feet around the work area for
nesting raptors
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and coastal California gnatcatcher (if there is coastal sage scrub). If
the Biologist does not find any active nests within or
immediately
adjacent to the impact area, the vegetation
clearing/construction
activities shall be allowed to proceed.
If the Biologist finds an active nest within or
immediately adjacent
to the construction area and determines that the
nest may be
impacted, or breeding activities substantially
disrupted, the
Biologist shall determine an appropriate protective
buffer zone
around the nest depending on the sensitivity of the
species and the
nature of the construction activity. The protective
buffer shall be
25–100 feet for nesting birds and 200–500 feet for
special status
bird species or nesting raptors. The active nest shall
be protected
until nesting activity has ended as determined
by a qualified
Biologist (i.e., nestlings have fledged or the nest
has failed).
Encroachment into the protective buffer around a
known nest shall
only be allowed if the Biologist determines that
the proposed
activity would not disturb the nest occupants.
MM BIO7Prior to project
activities
including
grading,
demolition,
vegetation
clearing,
etc.
Roosting
Bats:
City
The bats with potential to roost in the BSA (i.e., western red Planning bat and Division
western mastiff bat) roost in trees. If native or non-native trees are
proposed for removal, then either tree removal shall be conducted
between September and November (to avoid the bat maternity and
the bat hibernation season), or the tree removal will occur under the
supervision of a qualified Biologist and will utilize phased tree
trimming. First, branches are removed from the trees;
lowered to
the ground as gently as possible; and left overnight on the ground to
allow bats to escape. After they have been left overnight for at least
one night, the branches can be chipped and/or removed
from the
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site. The day after branches are cut from the tree, the tree trunk can
be cut; lowered to the ground as gently as
possible; and left
overnight on the ground to allow bats to escape. After
the trunk has
been left overnight for at least one night, the trunk
can be cut into
pieces, chipped, and/or removed from the site.
MM BIO8
MM BIO9
Final
Design
Night
Lighting:
City
Lighting plans shall be submitted to the City for review to Planning ensure Division
that night lighting is focused within the usable backyard space and
does not shine into adjacent habitat areas to the extent practicable.
Exterior lighting adjacent to natural open space shall be diffused,
shielded, and low intensity and located so that direct
rays are
confined to the developed areas.
Final
Design
Bird Strikes: If landscaping or improvements includes
installation City Planning
of glass walls in outdoor areas within lots that contain coastal sage Division
scrub or native woodlands, landscaping plans shall demonstrates that window/glass used are designed to minimize bird strikes.
This
may include measures such as angling of windows/glass
downward
so that the windows reflect the ground instead of the
surrounding
habitat or sky or the use of bird-safe glass that exhibits the “2×4
Rule”, as defined by the American Bird Conservancy. The 2 X 4 Rule
describes the distance between elements making up a
pattern
applied to windows for the purpose of preventing bird strikes. To be
effective, the pattern must uniformly cover the entire window and
consist of elements of any shape (e.g., lines, dots, other geometric
figures) separated by no more than 2 inches if oriented in horizontal
rows, or 4 inches if oriented in vertical columns (i.e., the 2 X 4 Rule).
These patterns reduce bird-window collisions when applied to the
outer surface of reflective panes. Greater spacing between pattern
elements increases the risk of a strike and casualties. Bird-safe glass
may include a uniformly dense dot, striped, or grid pattern created
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as ceramic frit on the external surface of the window
or a uniformly
dense dot, striped, or grid patterns of clear UVreflecting and UVabsorbing film applied to the exterior of windows.
Opaque glass can
also be used. It should be noted that single decals
(e.g., falcon
silhouettes or large eye patterns) are ineffective and
shall not be
used unless the entire glass surface is uniformly
covered with the
objects or patterns (Klem 1990).
MM BIO10Final
Design
Protected
Trees:
City
Planning
Division
Removal of mature significant trees protected by
the City of San
Dimas Municipal Code shall be avoided to the extent
practicable.
Mature significant trees may include native or nonnative species in developed or undeveloped areas, if they meet the size
requirement
for a mature significant tree under the City’s code.
Prior to removal
of mature significant trees, homeowners shall follow
the procedures
for tree removal described in San Dimas Municipal
Code 18.162 (see
https://file.lacounty.gov/SDSInter/acwm/216023_SanDi
masMC.p
df, Chapter 18.162: Tree Preservation). This Code
requires that a
tree inventory be prepared by a Certified Arborist to
map trees on
the property. If determined necessary through the
City’s review
process, conditions for removal of a mature
significant tree may
include tree replacement at a 2:1 ratio with a
minimum 15•gallon
box tree(s), or other replacement of equivalent
value and size,
within the subject property. No grading or building
permits shall be
issued and no mature significant trees shall be
removed until
approved as described in San Dimas Municipal
Code 18.162. San
Dimas Municipal Code 18.162 also requires
protection of existing
mature significant trees during project activities
and prohibits
topping and/or excessive pruning of a mature
significant tree that
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would result in significant damage to the tree to the
point that it may
limit future growth, as determined by a Certified
Arborist. To assist homeowners in the BSA, the Home
Owner’s Association
(HOA) could retain a Certified Arborist to prepare a
Native Tree
Inventory for the entire BSA. Following the
preparation of the
Native Tree Inventory, a map overlay could be made
showing native
trees to be avoided in order to avoid the need for
tree permitting.
The preparation of a single Native Tree Inventory
throughout the
BSA would provide an efficiency of scale that would
be more costeffective than the preparation of individual tree surveys by lot.
MM BIO11Final
Design
Jurisdictional Permitting: If a residential lot contains a potential City Planning
drainage, including potential jurisdictional features shown on Division
Figure 7, or other topographic features that may comprise a bed,
bank, or channel, a formal Jurisdictional Delineation shall be
prepared by a qualified Biologist. The project shall follow avoidance
and protective measures described under MM BIO-1.
To assist homeowners in the BSA, the HOA could
retain a qualified
Biologist to prepare a Jurisdictional Delineation for
the entire BSA.
This would identify jurisdictional features and
associated
regulatory authority for each lot. Following the
preparation of the
Jurisdictional Delineation, a map overlay could be
made showing
jurisdictional features to be avoided in order to avoid the need for
further regulatory permitting. The preparation
of a single
Jurisdictional Delineation throughout the BSA
would provide an
efficiency of scale that would be more costeffective than the preparation of individual Jurisdictional
Delineations by lot.
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However, the Jurisdictional Delineation may need to
be periodically
updated if regulatory requirements change over time.
If project activities would impact features under the
jurisdiction of
the USACE (if applicable), CDFW, and/or RWQCB, the
homeowner
shall obtain all necessary permits for impacts to
jurisdictional areas.
Potential mitigation options shall include payment
of an in-lieu
mitigation fee to an approved mitigation
bank; long-term
preservation of existing jurisdictional habitat at an onsite or off-site location; or another strategy as approved by the
USACE, CDFW,
and/or RWQCB. Jurisdictional areas shall be replaced
at a minimum
1:1 ratio, or as otherwise determined by the
resource agencies
during permitting. The appropriate jurisdictional
permits must be
obtained and mitigation must be secured (i.e., in-lieu
mitigation fee
paid or demonstration of long-term preservation
has been
obtained) prior to issuance of a grading or building
permit.
MM BIO12Prior to project
activities
including
grading,
demolition,
vegetation
clearing,
etc.
Water
Quality.
City
Planning
The following Best Management Practices (BMPs) Division shall be used
during construction activities:
• Erosion control measures shall be used
to minimize
erosion (e.g., temporary installation of silt
fences, straw
wattles, fiber rolls, gravel bags, etc.). • Wattles used for erosion control shall be biodegradable and certified as weedfree. • Spoils shall be stockpiled in disturbed areas lacking native
vegetation.
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• Construction vehicles shall be washed prior
to delivery to
the site to prevent weed seeds from
entering the
construction area. Track-clean or other
methods of
vehicle cleaning shall be used by the
construction
contractor to prevent weed seeds from
entering/exiting
the site on vehicles.
• Fueling and equipment maintenance
shall occur on
existing streets or other developed areas. No
equipment
maintenance shall occur within or adjacent to
drainages
or native vegetation. Contractor equipment
shall be
checked for leaks prior to operation and
repaired as
necessary.
• Any spilled hazardous materials shall be
immediately cleaned and hazardous materials properly
disposed of. • All trash and debris shall be picked up and removed from the site at the end of each
workday. • All work shall be conducted during daylight
hours only.
Trenches and excavations shall be covered at the
end of each
work day or a wood plank shall be placed from
the bottom of
the trench to the ground level to allow wildlife to
escape from
the trench/excavation.
MM BIO13Final
Design
Landscaping designs shall be submitted to the City for review to City Planning
ensure that no invasive, exotic plant species are used in proposed Division
landscaping (i.e., those listed on the California Invasive Plant
Council’s Invasive Plant Inventory with a Risk Rating of “High” [CalIPC 2023]). The review may be conducted by City staff or a qualified
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Biologist. If a qualified Biologist conducts the
review, suitable
substitutes should be suggested for any plants not
allowed. CULTURAL
MM CUL- RESOURCES
1 Prior to and
during
ground
disturbance
Prior to the commencement of grading or excavation,
workers City Planning
conducting construction activities and their foremen will receive Division
Worker Environmental Awareness Program (WEAP) training
from
a qualified archaeologist regarding the potential for
sensitive
archaeological and paleontological resources to be
unearthed
during grading activities. The workers will be directed to report any
unusual specimens of bone, stone, ceramics or other
archaeological
artifacts or features observed during grading and/or
other
construction activities to their foremen and to cease
grading
activities in the immediate vicinity of the discovery until a qualified
archaeologist or Native American cultural monitor is notified of the
discovery by the Superintendent of the project site and can assess
their significance. The WEAP shall be implemented to educate all
construction personnel of the area’s environmental conditions and the environmental protection measures that must be adhered to by
all workers throughout the duration of project
construction.
Training materials shall be language-appropriate for
all
construction personnel. Upon completion of the WEAP,
workers
shall sign a form stating that they attended the program, understand all protection measures, and shall abide by all the rules of the WEAP.
A record of all trained personnel shall be kept with the construction
foreman at the project field construction office and shall be made
available to any resource agency personnel. If new
construction
personnel are added to the project later, the construction foreman
shall ensure that new personnel receive training before they start
working. The archaeologist shall provide hard copies of the WEAP
presentation to the construction foreman.
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MM CUL2Prior to and
during
ground
disturbance
If historical or unique archaeological resources are
discovered City Planning
during construction, the contractor shall halt construction activities Division
in the immediate area and notify the City. An on call
qualified
archaeologist shall be notified and afforded the necessary time to
recover, analyze, and curate the find(s). A Monitoring
and
Treatment Plan shall be prepared by the qualified
archaeologist.
The qualified archaeologist shall recommend the extent
of
archaeological monitoring necessary to ensure the protection of any
other resources that may be in the area and afforded the necessary
time and funds to recover, analyze, and curate the
find(s).
Construction activities may continue on other parts of the site while
evaluation and treatment of historical or unique
archaeological
resources takes place.
MM CUL3Prior to and
during
ground
disturbance
If human remains are encountered during excavations
associated City Planning
with this project, all work shall stop within a 30-foot radius of the Division
discovery and the County Coroner shall be notified (§ 5097.98 of the
Public Resources Code). The Coroner shall determine whether the
remains are recent human origin or older Native American ancestry.
If the coroner, with the aid of the supervising
archaeologist,
determines that the remains are prehistoric, they shall contact the
NAHC. The NAHC shall be responsible for designating the Most
Likely Descendant (MLD). The MLD (either an individual
or
sometimes a committee) shall be responsible for the
ultimate
disposition of the remains, as required by § 7050.5 of the California
Health and Safety Code. The MLD shall make recommendations within 24 hours of their notification by the NAHC.
These
recommendations may include scientific removal
and
nondestructive analysis of human remains and items
associated
with Native American burials (§ 7050.5 of the Health and Safety
Code). Page 1917 – 2053
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GEOLOGY AND
MM GEO- SOILS
1 Prior to and
during
ground
disturbance
Before the beginning of grading pursuant to the proposed project, City Planning
the grading proponent shall retain a qualified paleontologist to be Division
on-call during the duration of grading. If paleontological resources
are uncovered during grading, the contractor shall halt grading in
the immediate area and notify the City. The on-call
paleontologist
shall be notified and afforded the necessary time and funds to
recover, analyze, and curate the find(s). Subsequently, the monitor
shall remain onsite for the duration of grading to ensure the
protection of any other resources that are found.
HYDROLOGY AND WATER
MM HYD- QUALITY
1 Final
Design
This mitigation measure would require applicants for
grading City Planning
permits pursuant to the proposed MCTA to prepare a
hydraulic Division
study. The hydraulic study would evaluate the ability of existing
downstream infrastructure to safely collect and convey
any
additional runoff created by future projects into the existing storm
drainage system in accordance with San Dimas and LA
County
standards. The hydraulic study must be approved by the
City
Engineer and would be required prior to review and approval of
grading plans by the Building Official and City Engineer.
ATTACHMENT 2
ORDINANCE 1319
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF SAN DIMAS,
COUNTY OF LOS ANGELES, APPROVING MUNICIPAL CODE TEXT
AMENDMENT 20-05, AN AMENDMENT TO CHAPTER 18.518 – SPECIFIC PLAN 11, OF THE SAN DIMAS MUNICIPAL CODE TO AMEND GRADING
LIMITS WITHIN PLANNING AREA I AND MAKE VARIOUS CLEAN-UP TEXT
AMENDMENTS, WHICH REQUIRES ADOPTION OF AN ASSOCIATED
MITIGATED NEGATIVE DECLARATION AND MITIGATION MONITORING AND REPORTING PROGRAM.
WHEREAS, an Amendment to the San Dimas Municipal Code has been duly initiated by the City of San Dimas; and
WHEREAS, the Amendment is described as an amendment to Chapter 18.518 – Specific Plan 11, in response to an initiation by City Council; and WHEREAS, the Amendment would affect residential areas of the City within Specific Plan 11 - Planning Area: 1; and
WHEREAS, on June 3, 2021, the Planning Commission considered the item and due to concerns about the CEQA categorical exemption, the item was continued to a date uncertain to allow for a thorough review of the environmental determination; and WHEREAS, on October 7, 2021, the item was brought back to the Planning Commission after a draft Mitigated Negative Declaration (MND) was prepared by City Staff, and the Commission voted 3-0-2, with Commissioners Davis and Ross recusing themselves, to recommend approval of the Amendment and the MND to the City Council; and WHEREAS, on October 26, 2021, the item was scheduled to be considered by the City Council; however, the item was pulled after potential issues with the City prepared MND were raised in a letter prepared by the Via Verde Ridge Homeowners Association’s (HOA) legal counsel; and
WHEREAS, on January 11, 2022, the City Council voted 3-2 (Council Members Ebiner and Bertone Davis opposed) to enter into an agreement with UltraSystems, an environmental consultant, to prepare a new MND for the project that would address the issues that were raised by the HOA’s legal counsel; and
WHEREAS, on January 19, 2023, the Planning Commission considered the Amendment and new MND, and voted 3-0-2, with Commissioners Davis and Ross recusing themselves, to adopt Resolution PC-1657 recommending approval of Municipal Code Text Amendment to the City Council, and denied Resolution PC-1658 recommending denial of the MND to the City Council, with a recommendation that City Council direct Staff to seek a peer review of the biological analysis to validate the report and the proposed mitigation measures and if possible, to reduce the onerous mitigation measure requirements on the residents; and WHEREAS, on February 28, 2023, the City Council considered the Amendment and new MND, and voted 5-0 to continue the item to the March 14, 2024, meeting, at which the Council voted 5-0 to continue the item to a date uncertain and directed Staff to seek a peer review of the UltraSystems prepared biological analysis and proposed mitigation measures; and
Ordinance 1319 Page 2
MCTA 20-05
WHEREAS, the City hired Psomas, an environmental consultant, to prepare a peer review of the UltraSystems’ MND, and prepared a revised biological analysis and updated the mitigation measures; which required a recirculation of the MND from June 21, 2004, to July 21, 2024; and WHEREAS, on November 21, 2024, the Planning Commission considered the Amendment and voted 4-0-1, with Commissioner Davis recusing himself, to approve Resolution PC-1689 recommending adoption of the Mitigated Negative Declaration, and to approve Resolution PC-1670 recommending approval of Municipal Code Text Amendment 20-05 to the City Council; and
WHEREAS, notice was duly given of the public hearing on the matter and that public hearing was held on December 10, 2024, at the hour of 7:00 p.m., with all testimony received being made a part of the public record; and
WHEREAS, the application is a project pursuant to the California Environmental Quality Act (Public Resources Code Section 21000 et seq.) ("CEQA") and an initial study has been prepared to determine possible environmental impacts. On the basis of the initial study, which indicated that all potential environmental impacts from the Project were less than significant or could be mitigated to a level of insignificance, a Mitigated Negative Declaration was prepared pursuant to CEQA Guidelines. Furthermore, to ensure that the mitigation measures are implemented, a Mitigation Monitoring and Reporting Program has been prepared for the Project pursuant to CEQA Guidelines Section 15097, which specifies responsible departments, monitoring frequency, timing and method of verification and possible sanctions for noncompliance with mitigation measures.
NOW, THEREFORE, in consideration of the evidence received at the hearing, and for the reasons discussed by the Commissioners at the hearing, the Planning Commission now finds as follows:
A. The proposed Municipal Code Text Amendment will not adversely affect adjoining property as to value, precedent or be detrimental to the area.
The proposed Municipal Code Text Amendment will not adversely affect adjoining property as to value, precedent or be detrimental to the area. The proposed amendment allows residents the ability to further develop their property and will allow for the addition of onsite amenities to all properties affected. In addition, a Mitigated Negative Declaration was prepared which includes mitigation measures to address reduce impacts to less than significant.
B. The proposed Municipal Code Text Amendment will further the public health, safety and general welfare.
The proposed amendments will provide current and future property owners within the affected area the opportunity to improve their backyards with additional onsite recreational uses for all residents. An environmental analysis was prepared to ensure impacts were mitigated, and future grading or improvement projects will be reviewed by the City’s Building and Engineering divisions to ensure all work is completed per Code.