Rancho Mirage City Council
January 15, 2026

Biological Resources Assessment & CVMSHCP Consistency Analysis Report Howard Wildlife Museum Project
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Aquila chrysaetos
golden eagle
F: BGEPA, MBTA, BCC
C: FP, WL
State Rank: S3
CVMSHCP: No
Forages over rolling foothills,
mountain areas, sage -juniper
flats, and desert. Giff-walled
canyons used for nesting,
sometimes large trees in oper
areas.

Nesting: Absent
Suitable habitat lacking
on -site.

Foraging: Low
Marginally suitable habitat
present. Species ranges
widely and could forage
on -site.

Calyptecostae
Costa's hummingbird
F: MBTA, BCC
C: None
State Rank: S4
CVMSHCP: No
Desert and semi -desert, arid
brushy foothills and chaparral
in migration and winter also
in adjacent mountains and in
open meadows and gardens
Nesting: Moderate
Suitable nesting habitat
present.

Foraging: Occurs
Observed.

Cypseloides niger
black swift
F: None
C: SSC
State Rank: S3
CVMSHCP: No
Coastal belt of Santa Cruz and
Monterey counties, central
and southern Nevada, San
Bernardino and San Jacinto
mountains. Resides near
waterfalls in deep canyons
and sea bluffs.

Nesting: Absent
Suitable habitat lacking.

Foraging: Absent
No surrounding habitat.

Empidonaxtraillii extimus
southwestern willow flycatcher
F: END, MBTA
C: END
State Rank: S1
CVMSHCP: Yes*
Breeds in dense riparian areas
with running water.

Nesting: Absent
Suitable habitat lacking.

Riparian vegetation not
present.

Foraging: Very low
Occurs in many habitats
during migration. No
suitable nesting habitat
in surrounding area.

Ste is not within
designated critical habitat
for this species.

Falco mexicanus
prairie falcon
F: MBTA, BCC
C: SSC' (nesting), FGC
State Rank: S3
CVMSHCP: No
Inhabits dry, open terrain,
either level or hilly. Breeding
sites located on cliffs, but
forages far afield.

Nesting:Absent
Suitable habitat lacking.

Steep cliffsides not
present.

Foraging: Low
Site is surrounded by
development and has few
open areas suitable for
foraging. The nearby Sant
Rosa Mountains may offer
refuge for the species.

Known from vicinity.

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Haliaeetusleucocephalus
bald eagle
F: BGEPA, MBTA, BCC
C: END, FP
State: S3
CVMSHCP: No
Margins of lakes, rivers, and
other bodies of water. In
Southern California, nests at
Big Bear Lake and Lake
Silverwood in the San
Bernardino Mountains and
Lake Hemet in the San Jacinto
Mountains.

Nesting: Absent
Suitable habitat lacking.

Foraging: Absent
Suitable habitat lacking.

Laniusludovicianus
loggerhead shrike
F: MBTA, BCC
C: SSC (nesting), FGC
State Rank: S4
CVMSHCP: No
Open fields with scattered
trees or shrubs, open country
with short vegetation,
pastures, old orchards,
cemeteries, golf courses,
riparian areas & open
woodlands.

Nesting: Absent
Suitable nesting habitat
absent. Site has scarce
vegetation and is
surrounded by
development.

Foraging: Low
May nest or winter nearby
& forage on -site.

Polioptila californica californica
coastal California gnatcatcher
F: THR
C: SSC
State Rank: S2
CVMSHCP: No
Obligate, permanent resident
of coastal sage scrub below
2500 ft. Can be found in
coastal sage scrub in arid
washes.

Nesting: Absent
Suitable habitat lacking.

Coastal scrub vegetation
not present.

Foraging: Absent
9�
Specimens were observed
and collected between
1916-1918. Likely black
tailed gnatcatcher.

Polioptila melanura
black -tailed gnatcatcher
F: ND
C: ND
State rank: S3S4
CVMSHCP: No
Nests in wooded desert wash
habitat containing mesquite,
palo verde, ironwood, and
acacia. May also occur in
areas with salt cedar,
especially when adjacent to
native wooded desert wash
habitat. Also occurs in desert
scrub habitat in winter.

Nesting: Absent
Nesting Habitat lacking.

Foraging: Low
May forage or move
through site from nearby
areas.

Pyrocephalusrubinus
vermilion flycatcher
F: MBTA
C: SSC (nesting)
State Rank: S2S3
CVMSHCP: No
During nesting, inhabits
desert riparian adjacent to
irrigated fields, irrigation
ditches, pastures, & other
open, mesic areas with nests
in cottonwood, willow,
mesquite, or other large
desert riparian trees. Also
known to nest in landscaped
areas such as commercial and
residential developments, golf
courses and parks.

Nesting: Absent
Nesting habitat lacking.

Foraging: Low
If nesting nearby.

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Recurvirostra americana
American avocet
F: MBTA, BCC
C: None
State Rank:

CVMSHCP: No
Typically nest in shallow
wetlands, islands, and dikes.

Breed in shallow wetlands.

Nesting: Absent
Suitable nesting habitat
lacking. Wetland habitats
not present.

Foraging: Absent
Suitable habitat lacking.

Wetland habitats not
present.

Spinus lawrencei
Lawrence's Goldfinch
F: MBTA, BCC
C: None
State Rank:

CVMSHCP: No
Reside in oak woodlands,
chaparral, coastal scrub,
juniper pine woodlands, Nest
in dense vegetation near
water sources.

Nesting: Absent
Suitable nesting habitat
lacking. Dense
vegetation and water
sources not present.

Foraging: Very low
Could move through site
during migration.

Toxostoma criosale crissal
thrasher
F: None
C: SSC
State Rank: S2
CVMSHCP: Yes*
Resident of SE deserts in
desert riparian and wash
habitats, nests in dense
mesquite, ironwood, catclaw,
arrowweed.

Nesting: Absent Suitable
nesting habitat lacking.

Foraging: Very low If
nesting nearby.

Ste is not within
CVMSHCP modeled
habitat for this species.

Toxostoma lecontei
Le Conte's thrasher
F: M BTA, BCC
C: SSC (nesting), FGC
State Rank: S3
CVMSHCP: Yes*
Desert resident; primarily of
open desert wash, desert
scrub, alkali desert scrub, and
desert succulent scrub
habitats. Nest in dense, spiny
shrub or densely branched
cactus in desert wash habitat,
usually 2-8 feet above
ground.

Nesting: Absent
Suitable nesting habitat
lacking.

Foraging: Low
If nesting nearby.

Suitable habitat not
observed on adjacent
lands, however.

Site is not within
CVMSHCP modeled
habitat for this species.

Toxostoma redivivum
California thrasher
F: MBTA, BCC
C: None
State Rank:

CVM SHCP:

Refer dense chaparral habitat
Nesting: Absent
Suitable nesting habitat
lacking. Chaparral
vegetation not present.

Foraging: Absent
Suitable habitat not in
surrounding area.

Vireo bellii pusillus
least Bell's vireo
F: END
C: END
State rank: S2
CVMSHCP: Yes
Riparian woodland habitats
aloe the riverine systems of
9 Y
Southern California, primarily
in San Diego, Santa Barbara,
and Riverside Counties. Need:
dense shrub cover within 1 to
2 meters (3 to 6 feet) off the
ground for nesting, and
stratified canopy for foraging
Nesting: Absent
Suitable habitat lacking.

Riparian vegetation not
present.

Foraging: Low
9�
Migration only
Ste is not within
designated critical habitat
for this species.

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Species conserved under the CVMSHCP, but is still protected by the MBTA and FGC Table 7. Special Status Mammals
Species
Status
Habitat
Probability
Chaetodipusfallax pallidus
pallid San Diego pocket mouse
F: None
C: SSC
State Rank: S3S4
CVMSHCP: No
Desert border areas in
desert wash, desert scrub,
desert succulent scrub,
pinon juniper, etc. Sandy
herbaceous areas usually in
association with rocks or
coarse gravel.

Absent
Suitable habitat lacking.

Sandy soils not present.

Site largely disturbed and
surrounded by developed
areas.

Dipodomys merriami collinus
Earthquake Merriam's
(Aguanga) kangaroo rat
F: None
C: SSC
State Rank: S1S2
CVMSHCP: No
Known only from San Diego
& Riverside Counties.

Associated with Riversidean
sage scrub, chaparral, &
non-native grassland. Needs
sandy loam substrates for
digging of burrows.

Absent
Suitable habitat lacking.

Sage scrub, chaparral and
non-native grasslands not
present. The CNDDB
records near site out of
range and habitat for this
subspecies. Presumably
these records are in error
and refer to a different
subspecies.

Lasiurusxanthinus
western yellow bat
F: None
C: SSC
State Rank: S3
WBWG: H
CVMSHCP: Yes
Found in a variety of
habitats: Valley foothill
riparian, desert riparian,
desert wash, and palm oasis
habitats
Roosting: Moderate
Species could potentially
roost within the palm
fronds of the palm trees
on site.

Foraging: Moderate
If nesting roosting
on/near site.

Neotoma lepida intermedia
San Diego desert woodrat
F: None
C: SSC
State Rank: S3S4
CVMSHCP: No
Coastal scrub of southern
California. Moderate to
dense canopies preferred.

Particularly abundant in rock
outcrops & rocky cliffs &
slopes.

Absent
Although there are rocky
outcrops present on -site;
suitable coastal scrub
vegetation is lacking. Site
is largely developed, and
the surrounding area is
heavily developed.

Woodrat sign detected
on -site most likely desert
woodrat (N. I. lepida).

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Table 7. Special Status Mammals
Species
Status
Habitat
Probability
Nyctinomopsfemorosaccus
pocketed free -tailed bat
F: None
C: SSC
State Rank: S2S3
WBWG: M
CVMSHCP: No
Rocky areas with high cliffs
in a variety of arid areas in
southern California. Usually
found near large water
sources.

Roosting: Low
Suitable habitat may be
present in rocky outcrops
on the hillside on -site but
high cliffs and large body
of water not present.

Foraging: Low
May roost on site or in
vicinity and forage over
site.

Nyctinomops macrotis
Big free -tailed bat
F: None
C: None
State Rank: S3
WBWG: M
CVMSHCP: No
Low-lying arid areas in
Southern California. Roost in
rocky outcrops, high cliffs,
tree crevices, and
occasionally roost in
buildings. Roost in areas
with water resources nearby.

Roosting: Low
Rocky outcrops present
within the on -site hillside
may be suitable.

Foraging: Low
If roosting in vicinity.

Oviscanadensis nelsoni (Pop. 2)
Peninsular bighorn sheep DPS
F: END
C: THR
State Rank: S1
MSHCP: Yes
Eastern slopes of the
Peninsular Ranges below
4,600 feet. Optimal habitat
includes steep -walled
canyons/ridges bisected by
rocky or sandy washes w/
available water
Absent
Although a rocky hill
exists in the work site, the
site is isolated from the
Santa Rosa mountains
(BPS range) by the
Highway 111 and existing
development. If a sheep
made it to the site, the
small hillside does not
have the resources to
provide a permanent
residence. The site is not
within PBS reserve.

Perognathuslongimembrisbangsi
Palm Springs pocket mouse
F: None
C: Scr
State Rank: S2
CVMSHCP: Yes
Inhabits flat or gently
sloping areas with sparse
vegetative cover and packed
or sandy soils.

Absent
Soil is disturbed and
graded. Sandy soils not
present. Ste is
surrounded by existing
development.

Site not within CVMSHCP
modeled habitat for this
species.

Perognathuslongimembris
brevinasus
Los Angeles pocket mouse
F: None
C: SSC
State Rank: S1S2
CVMSHCP: No
Inhabits lower elevation
grasslands and coastal sage
communities in/around Los
Angeles basin. Prefers open
ground and fine sandy soils.

Absent
Suitable habitat lacking.

Grasslands and preferred
habitat do not exist on or
adjacent to the site.

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Table 7. Special Status Mammals
Species
Status
Habitat
Probability
Xerospermophilustereticaudus
chlorus
Coachella Valley (Palm Springs)
round -tailed ground squirrel
F: None
C: SSC
State Rank: S1S2
CVMSHCP: Yes
Prefers open, flat, grassy
areas in fine textured, sandy
soil in desert succulent
scrub, desert wash, desert
scrub, alkali scrub, & levees.

Absent
Preferred habitat lacking.

Sany soils not present.

Soils on site are disturbed
and compacted.

Site not within CVMSHCP
modeled habitat for this
species.

Definitions of status designations and occurrence probabilities for Tables 1-7 Definitions for Species
Italics —Scientific name (i.e., Genus spedes subspecies) Bold —Standard common name
[Genus] — Previous genus, relatively recent taxonomic revision var.—variety (plants only)
DPS—Distinct Population Segment
Definitions of occurrence probability:

Occurs: Observed or detected on -site by WSPor recently reported by another reliable source.

High: Observed in similar habitat in region by qualified biologists, or habitat on -site is a type often utilized by the species and the site is within the known range of the species.

Moderate: Reported sightings in surrounding region, or site is within the known range of the species and habitat on - site is a type occasionally used by the species.

Low: Ste is within the known range of the species but habitat on -site is rarely used by the species Very Low: Habitat is of marginal suitability and/or site is at the edge of species known range or distribution.

AbsentA focused study failed to detect the species, suitable habitat not present, or site is outside the geographic distribution of the species.

Unknown: No focused surveys have been performed in the region, & the species' distribution & habitat are poorly known.

CVMSHCP designations
Yes: Conserved by the CVMSHCP
No: Not Specifically Conserved by the CVMSHCP
Federal designations: (F= federal Endangered Species Act or USFWSdesignations) END: Federally listed, Endangered
THR: Federally listed, Threatened
CAN: Candidate for Federal listing
MBTA: Migratory Bird Treat
BEPA: Bald Eagle Protection Act (also protects Golden Eagles) BCC: Birds of Conservation Concern
None: No designation
State desic nations: (C = California Endangered Species Act or CDFG designations) END: State listed, Endangered
THR: State listed, Threatened
CAN: Candidate for State listing
RARE State listed, Rare
FP: Fully Protected Species
S C: Species of Special Concern
FGC: Fish and Game Code
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WL: Watch List Species
CDFW state rankings are a reflection of the overall condition of an element throughout its California range. The number after the decimal point represents a threat designation attached to the rank:

S1 = Critically Imperiled. Less than (<) 6 Bement Occurrences (EOs) OR< 1,000 individuals OR< 2,000 acres S1.1 = very threatened
S1.2 = threatened
S1.3 = no current threats known
S2 = Imperiled. 6-20 BDs OR 1,000-3,000 individuals OR 2,000-10,000 acres S2.1 = very threatened
S2.2 = threatened
S2.3 = no current threats known
S3 = Vulnerable. 21-80 EOs OR 3,000-10,000 individuals OR 10,000-50,000 acres S3.1 = very threatened
S3.2 = threatened
S3.3 = no current threats known
S4 = Apparently Secure. Uncommon but not rare in the state; some cause for long-term concern.

S5 = Secure. Common, widespread, and abundant in the state.

SH = All known California sites are historical, not extant ?= Qualifier: Inexact or Uncertain - A question mark representsa rank qualifier, denoting an inexact or uncertain numeric rank.

California Native Plant Society (CNPS) designations:

Primary Categories
LIST 1A: Rants Presumed Extirpated in California and Ether Rare or Extinct Elsewhere LIST 1B: Rants Rare, Threatened, or Endangered in California and Elsewhere LIST2A: Rants Resumed Extirpated in California, But Common Elsewhere LIST 2B: Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere LIST 3: Rants About Which More Information is Needed - A Review List LIST4: Plants of Limited Distribution - A Watch List
Subdivisions within Catecories

0.1: Seriously threatened in California

0.2: Moderately threatened in California

0.3: Not very threatened in California
Western Bat Working Group (WBWG) designations:

The Western Bat Working Group is comprised of agencies, organizations and individuals interested in bat research, management and conservation from the 13 western states and provinces. Its goals are (1) to facilitate communication among interested parties and reduce risks of species decline or extinction; (2) to provide a mechanism by which current information on bat ecology, distribution and research techniques can be readily accessed; and (3) to develop a forum to discuss conservation strategies, provide technical assistance and encourage education programs.

H: High: Species which are imperiled or are at high risk of imperilment based on available information on distribution, status, ecology and known threats.

M: Medium: Species which warrant a medium level of concern and need closer evaluation, more re- arch, and conservation actions of both the species and possible threats. A lack of meaningful information is a major obstacle in adequately assessing these species' status and should be considered a threat.

L: Low: Species for which most of the existing data support stable populations, and for which the potential for major changes in status in the near future is considered unlikely. There may be localized concerns, but the overall status of the species is believed to be secure. Conservation actions would still apply for these bats, but limited resources are best used on High and Medium status species.

P: Periphery: This designation indicates a species on the edge of its range, for which no other designation has been determined.

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6.0 DISCUSSION
The proposed development of the 7.20 acres project site would result in the loss/conversion of approximately 3.0 acres of the total project site. The proposed disturbed areas are composed of a parking lot, and a graded vacant lot. The rock outcrop is not expected to be disturbed. The likelihood of occurrence for the special status species reported from the vicinity has either been eliminated or reduced by existing development on site and in the surrounding area, removal of most native vegetation, and the grading of existing soils. The vegetation on the rock outcrop is mostly undisturbed and most closely aligns with creosote bush scrub as described by Sawyer et. al (2009). Other existing site disturbance (i.e., compaction of soils, human disturbance, and dumping and accumulation of roadside trash) further reduces the likelihood of occurrence of many special status species. Furthermore, the presence of existing adjacent residential and commercial development to the north, south, and east of the site, and Highway 111 to the west have largely isolated the site from other undeveloped open space. The Santa Rosa Mountains are undeveloped and exist to the west and south of the site. The only barrier between the west end of the project site and the Santa Rosa mountains is Highway 111. As a result, connectivity of the site to other undeveloped open space has been eliminated, or at least diminished, for many terrestrial species.

The CVMSHCP was designed to streamline the permitting process and to mitigate potential impacts resulting from covered projects and the lawful activities of permittees through payment of the requisite development fee and participation in plan's requirements. A few species, which are not covered by the CVMSHCP and/or are not yet adequately conserved by the CVMSHCP (e.g., burrowing owl, nesting birds) require additional consideration and/or actions, which are detailed below.

6.1 Discussion of the Special Status Biological Resources Tables A review of the CNDDB, CNPS and IPaC Resources List resulted in a total of 103 special status biological resources that have been reported from the vicinity (Tables 1-7). Of these, 92 are considered to be absent. The special status biological resources that are considered to be absent from the site include: chaparral sand -verbena (Abronia villosa var. aurita), Borrego milk -vetch (Astragalus lentiginosus var. borreganus), Coachella Valley milk -vetch (Astragalus lentiginosus var. coachellae), Lancaster milk -vetch (Astragalus preussii var. laxiflorus), triple -ribbed milk -vetch (Astragalustricarinatus), Peninsular spineflower (Chorizanthe leptotheca), glandular ditaxis (Ditaxis claryana), Booth's evening primrose (Eremothera boothii var. boothii), Joshua Tree poppy (Eschscholzia androuxii), Arizona spurge (Euphorbia arizonica), flat -seeded spurge (Euphorbia platysperma), southwestern spiny rush (Juncus acutusssp. leopoldii), Cooper's rush (Juncus cooperi), Torrey's box -thorn (Lycium torreyi), California marina (Marina orcuttii var. orcuttii), spear - leaf matelea (Matelea parvifolia), slender cottonheads (Nemacaulis denudate var. gracilis), Deep Howard Wildlife Museum Project BRAR
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Canyon snapdragon (Pseudorontium cyanthiferum), Horn's milk vetch (Astragalus hornii var. hornii), singlewhorl burrobush (Ambrosia monogyra), alkali marsh aster (Almutaster pauciflorus), Payson's jewel flower (Caulanthus simulans), southern jewel flower (Streptanthus campestris), Parish's brittlescale (Atriplex parishii), pygmy lotus (Acmispon haydonii), Parry's spineflower (Chorizanthe parryi), white-bracted spineflower (Chorizanthe xanti var. leucotheca), little San Bernardino Mtns. Linanthus (Linanthus maculatus), San Jacinto linanthus (Linanthus jaegeri), Latimer's woodland gilia (Saltugilia latimeri), shaggy haired alum root (Heuchera hirsutissima), California ayenia (Ayenia compacta), lemon lily (Cilium parryi), California brevifolia (Imperata brevifolia), Sonoran maiden fern (Pelazoneuron puberulum var. sonorense), Parish's Chaenactis (Chaenactis parishii), Mojave tarplant (Deinandra mohavensis), Johnston's rockcress (Arabis johnstonii), rigid fringepod (Thysanocarpus rigidus), long-spined spineflower (Chorizanthe polygonoides var. longispina), white -marginated oxytheca (Oxytheca emarginata), California beardtongue (Penstemon californicus), San Jacinto mariposa -lily (Calochortuspalmeri var. munzii), pointed dodder (Cuscuta californica var. apiculata), Palomar monkeyflower (Erythranthe diffusa), slender bedstraw (Galium pumilum), beautiful hulsea (Hulsea vestita ssp. Callicarpa), San Jacinto beardtongue (Penstemon clevelandii var. conatus), desert spike -moss (Selaginella eremophila), Cove's cassia ( nna covesii), purple stemodia (Stemodia durantifolia), Mecca -aster (Xylorhiza cognata), desert fan palm oasis woodland, Casey's June beetle (Dinacoma caseyi), Crotch's bumblebee (Bombus crotchii), Coachella giant sand treader cricket (Macrobaenetes valgum), cheeseweed owlfly (Oliarces Clara), Coachella Valley Jerusalem cricket (Stenopelmatus cahuilaensis), desert pupfish (Cyprinodon macularius), flat -tailed horned lizard (Phrynosoma mcallii), Coachella Valley fringe -toed lizard (Uma inornata), desert tortoise (Gopherus agassizii), nesting golden eagle (Aquila chrysaetos), nesting burrowing owl (Athene cunicularia), nesting southwestern willow flycatcher (Empidonax traillii extimus), nesting prairie falcon (Falco mexicanus), nesting bald eagle (Haliaeetus leucocephalus), nesting loggerhead shrike (Lanius ludovicianus), nesting black -tailed gnatcatcher (Polioptila melanura), nesting vermilion flycatcher (Pyrocephalus rubinus), nesting crissal thrasher (Toxostoma cri.a ale), nesting Le Conte's thrasher (Toxostoma lecontei), nesting least Bell's vireo (Vireo bellii pusillus), nesting coastal California gnatcatcher (Polioptila californica californica), nesting black swift (Cypseloides niger), nesting American avocet (Recurvirostra americana), nesting California thrasher (Toxostoma redivivum), nesting Clark's grebe (Aechmophorus clarkii), nesting Lawrence's goldfinch (Spinus lawrencei), nesting Western grebe (Aechmophorus occidentalis), Palm Springs pocket mouse (Perognathus longimembris bangsi), Coachella Valley (Palm Springs) round -tailed ground squirrel (Xerospermophilus tereticaudus chlorus), pallid San Diego pocket mouse (Chaetodipus fallax pallidus), Earthquake Merriam's(Aguanga) kangaroo rat (Di podomys merriami collinus), San Diego desert woodrat (Neotoma lepida intermedia), Peninsular bighorn sheep (Ovis canadensis nelsoni), and Los Angeles docket mouse (Perognathus longimembris brevinasus).These special status biological resources will not be discussed further, with the exception of a few.

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Three of the species presumed to be absent, and one species considered to have "moderate" likelihood of being on the site are fully (or partially) covered, conserved (or partially conserved) under the CVMSHCP. Participation in the CVMSHPS and payment of the requisite CVMSHCP development fee and participation in the plan is expected to fully mitigate project related impacts (if any) to these species. Although not detected during the assessment, the western yellow bat could potentially roost in the mature California palm aprons and trees on -site. This species and mitigation efforts are discussed below. Regardless of whether these species occur on the project site or not, participation in the CVMSHCP and payment of the development fee is designed and intended to provide full coverage of potential project -related impacts. Although desert tortoise, burrowing owl, and Peninsular bighorn sheep are considered to be absent from the site, due to an overall lack of suitable habitat, they will also be discussed below for further clarification.

6.1.1 Species Covered Under the CVMSHCP
Desert tortoise is considered to be absent from the project site due to a lack of suitable habitat.

However, this species is covered by the CVMSHCP and occasionally require additional efforts prior to development. The desert tortoise is federally and state listed as threatened by the CDFW and USFWS. Although desert tortoise is covered under the CVMSHCP, further actions are required (where suitable habitat is present) to ensure that take is entirely avoided and/or minimized to the greatest extent possible. No live desert tortoises or sign thereof (i.e., burrows, scat, tracks, carcass remains, courtship rings, drinking depressions) were observed on -site during the assessment.

Furthermore, the site is not only surrounded by development, but also has existing development on site. The site is not located within designated critical habitat or CVMSHCP modeled habitat for desert tortoise. For these reasons, habitat suitable for desert tortoise is not present on -site.

Additionally, surrounding lands (with the exception of lands to the west) have been developed or are currently in the process of being developed. The land to the east is vacant, undeveloped and disturbed but also does not appear to support habitat suitable for desert tortoise. For these reasons, although a very limited amount of remnant vegetation community (i.e., creosote bush scrub) that might otherwise technically be suitable for the desert tortoise, existing site conditions (i.e., nearly 100% conversion to former agricultural practices, existing and past site disturbance, existing adjacent development, etc.) have resulted in an area that is currently unsuitable for this conspicuous and wide-ranging species. For these reasons, it is the opinion of WSP that desert tortoise is absent from the project site and that focused surveys are not warranted or recommended. Project implementation is anticipated to have no impact on the desert tortoise.

The burrowing owl is considered absent from the project site. No burrowing owls, or sign thereof, were observed or detected on -site during the assessment. No California ground squirrel burrows of sufficient size to be suitable for burrowing were observed on -site. For these reasons, WSP considers there to be no potential for the occurrence of burrowing owl on -site. Therefore, they Howard Wildlife Museum Project BRAR
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are not anticipated to be an issue for the proposed development of the site. The burrowing owl is not currently listed as a federal or state listed threatened or endangered species. It is, however, managed as a BCC by the USFWSand designated as a candidate species for listing as endangered by the CDFW. This means it receives the same protections as a state -listed endangered species for a temporary period while review of the status takes place. It is also protected by the M BTA and FGC. The burrowing owl is a covered species under the CVMSHCP, however the federal permit for the CVMSHCP does not allow take of this species under the MBTA. Any impacts to burrowing owl would be considered significant under the CEQA, but are not anticipated at this time.

Peninsular bighorn sheep are considered to be absent from the project site. This species is covered by the CVMSHCP and sometimes require additional efforts. The Peninsular bighorn sheep (PBS) is federally listed as endangered and listed as threatened in California. The project site is within one mile of critical PBS habitat (Figure 6). However, the critical habitat and the project site are divided by the Highway 111. Migration to the site is unlikely, but not impossible. Although there is one relatively small rocky hillside on -site, no sign was observed, and the area is assumed to be not occupied by the species. Thus, Peninsular bighorn sheep are not anticipated to be an obstacle for the project development.

Roosting habitat for Western yellow bat is present on site. This species is covered by the CVMSHCP and is also listed as a species of special concern in California. The western yellow bat is also considered imperiled or at higher risk of imperilment by the Western Bat Working Group (WBWG).

This species roosts in palm fronds which exist on site. Therefore, a bat clearance survey is recommended before removal of palm trees that exist on site, if removal is proposed. It should be noted that bats and bat sign were not observed during the biological assessment.

The remaining 10 species, which are not covered, or not fully covered, under the CVMSHCP are discussed separately below.

6.1.2 Plant Species Not Covered Under the CVMSHCP
Pink velvet mallow is considered to have a "low" possibility of occurring on -site, as they exist in rocky areas in creosote bush scrub. Potentially suitable habitat (creosote bush scrub) is located on the undeveloped rock hillside. Pink velvet mallow is not listed as threatened or endangered by either the CDFW or USWFW. This species has been designated as a List 4.3 species, generally meaning that on a watch list and is "not threatened in California" by the CNPS. Pink velvet mallow has also been assigned a state rank of S4 meaning that the species is generally considered to be "secure" in the state and is also uncommon in the state. Pink velvet mallow is not a CVMSHCP-covered species; therefore development fees offer no mitigation for impact (if any). Impacts could be considered significant under the CEQA if a significant population were to be present on -site. The likelihood of this project encountering/ disturbing this species is low due to the project not being expected to disturb the rock hillside. Therefore, impacts to pink velvet Howard Wildlife Museum Project BRAR
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mallow (if any) would not likely be considered significant under the CEQA. As a result, a focused survey for pink velvet mallow at this site is not anticipated to be required.

California ditaxis is considered to have a "low" possibility of occurring on -site, due to the presence of potentially suitable habitat (creosote bush scrub) located on the undeveloped rock hillside. California ditaxis is not listed as threatened or endangered by either the CDFW or USWFW. This species has been designated as a List 3.2 species, generally meaning that "more information is needed" but that it is considered a "moderately threatened in California" by the CNPS. California ditaxis has also been assigned a state rank of S2? Meaning that the species is generally considered to be "imperiled" in the state but that the assigned rank is inexact or uncertain. Like the other species above, California ditaxis is not a CVMSHCP-covered species, therefore development fees offer no mitigation for impact (if any). Impacts could be considered significant under the CEQA if a significant population were to be present on -site. The likelihood of this project encountering/ disturbing this species is low due to the project not being expected to disturb the rock hillside. Therefore, impacts to California ditaxis (if any) would not likely be considered significant under the CEQA. As a result, a focused survey for California ditaxis at this site is not anticipated to be required.

Newberry's velvet mallow is considered to have a "low" possibility of occurring on -site, as they exist in rocky areas in creosote bush scrub. Potentially suitable habitat (creosote bush scrub) is located on the undeveloped rock hillside. Newberry's velvet mallow is not listed as threatened or endangered by either the CDFW or USWFW. This species has been designated as a List 4.3 species, generally meaning that on a watch list and is "not threatened in California" by the CNPS. Newberry's velvet mallow has also been assigned a state rank of S4 meaning that the species is generally considered to be "secure" in the state, and is also uncommon in the state.

Like the other species above, Newberry's velvet mallow is not a CVMSHCP-covered species, therefore development fees offer no mitigation for impact (if any). Impacts could be considered significant under the CEQA if a significant population were to be present on -site. The likelihood of this project encountering/ disturbing this species is low due to the project not being expected to disturb the rock hillside. Therefore, impacts to Newberry's velvet mallow (if any) would not likely be considered significant under the CEQA. As a result, a focused survey for Newberry's velvet mallow at this site is not anticipated to be required.

Winged cryptantha is considered to have a "low" possibility of occurring on -site, as they exist in rocky areas in creosote bush scrub. Potentially suitable habitat (creosote bush scrub) is located on the undeveloped rock hillside. Winged cryptantha is not listed as threatened or endangered by either the CDFW or USWFW. This species has been designated as a List 4.2 species, generally meaning that on a watch list and is "moderately threatened in California" by the CNPS. Winged cryptantha has also been assigned a state rank of S4 meaning that the species is generally considered to be "secure" in the state, and is also uncommon in the state. Like the other species Howard Wildlife Museum Project BRAR
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above, winged cryptantha is not a CVMSHCP-covered species, therefore development fees offer no mitigation for impact (if any). Impacts could be considered significant under the CEQA if a significant population were to be present on -site. The likelihood of this project encountering/ disturbing this species is low due to the project not being expected to disturb the rock hillside.

Therefore, impacts to winged cryptantha (if any) would not likely be considered significant under the CEQA. As a result, a focused survey for winged cryptantha at this site is not anticipated to be required.

Narrow -leaf sandpaper -plant is considered to have a "low" possibility of occurring on -site, as they exist in rocky areas in creosote bush scrub. Potentially suitable habitat (creosote bush scrub) is located on the undeveloped rock hillside. Narrow -leaf sandpaper -plant is not listed as threatened or endangered by either the CDFW or USWFW. This species has been designated as a List 2B.3 species, generally meaning that it is rare and is "not threatened in California" by the CNPS. Narrow -leaf sandpaper -plant has also been assigned a state rank of S3? meaning that the species is generally considered to be "vulnerable" in the state, but this ranking has uncertainty, and more research is needed. Like the other species above, narrow -leaf sandpaper - plant is not a CVMSHCP-covered species, therefore development fees offer no mitigation for impact (if any). Impacts could be considered significant under the CEQA if a significant population were to be present on -site. The likelihood of this project encountering/ disturbing this species is low due to the project not being expected to disturb the rock hillside. Therefore, impacts narrow -leaf sandpaper -plant (if any) would not likely be considered significant under the CEQA. As a result, a focused survey for narrow -leaf sandpaper -plant at this site is not anticipated to be required.

6.1.3 Wildlife Species Not Covered Under the CVMSHCP
Costa's hummingbird was observed on -site during the assessment. This species is not federally or state listed by the USFWS or CDFW, however is managed as a BCC and protected by FGC and the MBTA while nesting. Limited nesting habitat for Costa's hummingbird is present on -site in the palo verde trees and a few other ornamental trees on -site. In order to avoid potentially impacting nesting Costa's hummingbird, avoidance of any project -related disturbance (i.e., grading, vegetation removal, landscaping, operation of heavy equipment, construction, etc.) during the nesting season (1 February through 31 August) is recommended. If initial project disturbance cannot be scheduled to occur outside of the nesting season, a clearance survey for nesting Costa's hummingbird conducted by a qualified ornithologist or biologist immediately prior to on -site disturbance is recommended. If nesting Costa's hummingbirds are found, 100% avoidance of impacts is required and no work buffer zones would need to be established and observed where no work would be permitted until young have fledged. While there is no established protocol for nest avoidance, when consulted the CDFW generally recommends avoidance buffers of about 100-300 feet for unlisted songbirds.

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Red diamond rattlesnakes are not covered under the CVMSHCP; however they are considered a species of special concern in California. This species favors rocky habitats, and the undeveloped rock outcrop could potentially act as habitat for this species. However, this pocket of habitat is very small, and the surrounding area is developed and disturbed. At this time, the rock outcrop isn't proposed to be disturbed. Thus, this species is not expected to be an issue for the development of the site. If plans change and disturbance of the rocky area is expected to occur, a clearance survey of the rocky area would be recommended.

Monarch butterflies are not covered by the CVMSHCP and is considered to have a low potential to be on -site if milkweed, their larval host plant, is present. Monarchs are proposed threatened under the Endangered Species Act. Monarchs generally overwinter on the coast, and overwintering habitat was not abundant on site. The larval host plant (milkweed) was not observed during the biological survey. However, these plants typically remain dormant during winter and then re-emerge in the spring. The blooming periods are dependent on the species but generally occur between April -July and May -October. The biological survey took place in January and therefore was out of the blooming period. During the preconstruction survey, the on -site biologist will check the area for milkweed, during their proper blooming period immediately prior to any vegetation removal or soil disturbance.

The undeveloped rock outcrop could act as potential roost sites for both pocketed free tail and big freetail bat. Neither species have federal protections, however pocketed free tail is considered a species of special concern in California. The rock outcrop is not proposed to be impacted by the project development. If these plans change and development is expected to occur on the rock outcrop, it is suggested that a bat clearance survey be conducted prior to work activity.

6.1.4 Additional Bird Species Protected by the M igratory Bird Treaty Act Excluded from coverage under the CVMSHCP are a variety of common bird species that are protected by the MBTA and FGC. This includes virtually all native migratory and resident bird species, including birds observed on -site and/or known to occur in the vicinity. Avoidance of impacts to these nesting migratory and resident birds is a requirement of the federal permit issued for the CVMSHCP. In order to avoid potentially impacting nesting birds, avoidance of any project - related disturbance (i.e., grading, vegetation removal, landscaping, operation of heavy equipment, construction, etc.) during the nesting season (1 February through 31 August) is recommended. If initial project disturbance cannot be scheduled to occur outside of the nesting season, a nesting bird clearance survey conducted by a qualified ornithologist or biologist immediately prior to on - site disturbance is recommended. If nesting birds are found, no work buffer zones would need to be established and observed where no work would be permitted until young have fledged. While there is no established protocol for nest avoidance, when consulted the CDFW generally Howard Wildlife Museum Project BRAR
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recommends avoidance buffers of about 100-300 feet for unlisted songbirds and 500 feet for listed songbirds and raptors.

6.1.5 Jurisdictional Areas
No natural streams, creeks, rivers, lakes, ponds or pools are located on the project site. For these reasons, no further actions or considerations regarding jurisdictional areas are anticipated to be required for this project.

7.0 CONCLUSION
The aty of Rancho Mirage is a signatory to the CVMSHCP (CVCC 2024). Therefore, payment of the required development fees for approved projects are anticipated to mitigate the impacts and/or potential impacts (if any) to covered species potentially resulting from the development of the site, whether those covered species occur there or not. The only species covered under the CVMSHCP that may occur on site is the western yellow bat. Impacts to these species (if any) and their respective habitat, would be fully covered and mitigated under the CVMSHCP with the payment of the requisite development fee and participation in the requirements of the plan.

Bat clearance surveys are recommended if the developers plan to remove any palm trees, or if they intended to disturb the rock outcrop. Currently, the proposed project footprint does not extend to the rock outcrop.

Monarch butterflies are considered to have a low potential to be on -site. The larval host plant (milkweed) was not observed during the biological survey. However, WSPs biological survey was conducted during the dormant period for milkweeds. The blooming periods are dependent on the species but generally occur between April -July and May -October It is suggested that during the preconstruction survey, the on -site biologist looks for milkweed.

No further surveys are recommended for the five special status plant species listed above. If any project related disturbance occurs on the adjacent hillside, a pre -construction clearance survey is recommended.

No further surveys are recommended for red diamond rattlesnakes. The only suitable habitat on site for this species is the rock hillside, which is not currently proposed to be disturbed. If disturbances are proposed to take place on the rock hillside in the future, then a clearance survey is recommended.

Impacts to other bird species protected by the M BTA and FGC, including but not limited to Costa's hummingbird, Cooper's hawk, mourning dove (Zenaida macroura), require avoidance. If project activities (i.e., site grading, vegetation removal/trimming, earthwork in undisturbed areas, etc.) are Howard Wildlife Museum Project BRAR
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conducted during the nesting season (i.e., generally between 1 February and 31 August), a nesting bird clearance survey is recommended to ensure impacts to nesting birds are avoided. If project activities are conducted outside of the nesting season, a nesting bird clearance survey could likely be avoided. If active bird nests are found, at any time, proposed project activities would need to be halted and postponed until young have fledged the nest and impacts to nesting birds are entirely avoided.

With participation in and compliance with the requirements of the CVMSHC and implementation of the recommendations above, impacts to special status biological resources are anticipated to be mitigated to a less than significant level.

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8.0 LITERATURE CI TED AN D REFERENCES
Association of Environmental Professionals. 2022. 2022 CEQA California Environmental Quality Act Statute and Guidelines. Accessed online at:
https://www.califaep.org/docs/ 2022 CEQA Statue and Guidelines.pdf California Bird Records Committee. 2025. Official California Checklist. Accessed online at:
http://californiabirds.org/ca list.asp.

California Department of Fish and Wildlife (CDFW). 2025a. California Natural Diversity Data Base, Rarefind 5. Report for the Rancho Mirage, La Quinta, Cathedral City, Myoma, Palm Springs, and Palm View Peak, Calif. quadrangles. Accessed at:
dfg.ca.gov/biogeodata/cnddb/mapsanddata.asp
CDFW. 2025b. Special Animals List. January. Periodic publication. Sacramento, GA. Accessed online at: https://nrm.dfg.ca.gov/ FileHandler.ashx?DocumentID= 109406& inline= 1 CDFW. 2016. Complete List of Amphibian, Reptile, Bird and Mammal Species in California.

Accessed online at: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentlD=87155&inline California Native Plant Society (CNPS). 20525a. CNPS Rare Plant Inventory. Report for the Rancho Mirage, Cathedral City, La Quinta, Myoma, Palm View Peak, and Palm springs Calif. quadrangles. Accessed online at: http://www.rareplants.cnps.org CNPS. 2025. California Rare Plant Ranks. Accessed online at: https://www.cnps.org/rare- plants/california-rare-plant-ranks
Coachella Valley Conservation Commission (CVCC). 2024. Coachella Valley Multiple Species Habitat Conservation Plan. Accessed plan documents online at: cvmshcp.org Jepson Flora Project (2nd ed.). 2025. Jepson eFlora. Accessed online at: [12 February 2025] Sawyer, J.O., T. Keeler -Wolf, and J.M. Evens. 2009. A manual of California vegetation (2nd ed.).

California Native Plant Society, Sacramento, CA.

USDA, NRCS. 2025. Web Soil Survey. Accessed online at: http://websoilsurvey.nres.usda.gov/app/ USDA, NRCS. 2025. The PLANTS Database. National Rant Data Team. Accessed online at:
plants.usda.gov
USFWS. 2025. Migratory Bird Treaty Act of 1918. Accessed online at:
https://www.fws.gov/law/migratory-bird-treaty-act-1918
USGS. 2018. Cathedral City, Calif. 7.5 -Minute Topographic Quadrangle.

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USGS. 2021a. Rancho Mirage, Calif. 7.5 -Minute Topographic Quadrangle.

USGS. 2021b. La Quinta, Calif. 7.5 -Minute Topographic Quadrangle.

USGS. 2021c. Myoma, Calif. 7.5 -Minute Topographic Quadrangle.

USGS. 2021d. Palm View Peak, Calif. 7.5 -Minute Topographic Quadrangle.

USGS. 2021e. Palm Springs, Calif. 7.5 -Minute Topographic Quadrangle.

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APPENDIX A
SPECIES LIST: VASCULAR PLANTS
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APPENDIX A
Species List: Vascular Plants
This list reports only plants observed by WSP on the site during the field assessment. Other species may have been overlooked or undetectable due to their growing season. [1= special status species, * = non-native species, sp. = identified only to genus, ^=landscaped/planted, cf= compares favorably with]
Arecaceae
Palm family
Washingtonia filifera^
California (desert) fan palm^
Washingtonia robusta*^
Mexican fan palm^
Phoenix dactylifera*^
date palm^
Asparagaceae
Agave family
Agave deserti*^
desert agave*A
Asphodelaceae
Aloe family
Aloe sp.*^
aloe species*^
Asteraceae
Sunflower family
Encelia farinosa
brittlebush
Bebbia juncea
sweetbush
Palafoxia arida
giant Spanish needles
Perityle emoryi
rock daisy
Ambrosia dumosa
burro bush
Ambrosia salsola
cheesebush
Boraginaceae
Borage family
.bhnstonella angustifolia
narrow -leaved cryptantha
Phacelia sp.
scorpion weed species
Euphorbiaceae
Spurges
Euphorbia albomarginata
whitemargin sandmat
Euphorbia hirta*
asthma -plant*
Euphorbia tirucalli*^
firestick plant*A
Fouquieriaceae
Ocotillo family
Fouquieria splendens^
Ocotillo^
Geraniaceae
Geranium family
Erodium cicutarium*
common stork's bill*
Brassicaceae
Mustard family
Hirschfeldia sp.
mustard species
Cactaceae
Cactus family
Opuntia sp.^
prickly pear sp.^
Chenopodiaceae
Goosefoot family
Atriplex polycarpa
cattle saltbush
Fabaceae
Pea family
cf. Acacia sp.* A
Unidentified non-native acacia* A
Dalea mollissima
soft prairie clover
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Parkinsonia aculeata* A
Mexican palo verde*A
Psorothamnusemoryi
dyebush
Senna artemisioides*
silver senna*
Malvaceae
Mallow family
MaIva parviflora*
cheeseweed*
Myrtaceae
Myrtle family
Eucalyptus sp.*
eucalyptus species*
Plantaginaceae
Plantain family
Plantago ovata
desert plantain
Rubiaceae
Madder family
Galium angustifolium
narrow leaved bedstraw
Zygophyllaceae
Caltrop family
Tribulusterrestris*
puncture vine*
Larrea tridentata
creosote bush
Nyctaginaceae
Four o'clock family
Bougainvillea glabra choisy*"
Bougainvillea*A
Poaceae
Grass family
Cynodon dactylon*A
Bermuda grass*^
Cenchrus setaceus*
fountain grass*
Schismuscf. barbatus*
Mediterranean grass*
Stipa speciosa
desert needle grass
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APPENDIX B
SPECI ES LIST: VERTEBRATE AN I M ALS
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APPENDIX B
Species List: Vertebrate Animals
This list reports only the vertebrate animals observed or detected by WSP during the field assessment. Other species may have been overlooked or undetectable due to their activity patterns or weather conditions. [1= special status species, * = non-native species, sp. = identified only to genus, cf = compares favorably with]

VERTEBRATES

REPTILIA

REPTILES
Phrynosomatidae
Spiny Lizards & Allies
Uta stansburiana
side -blotched lizard
AVES
BIRDS
Columbidae
Pigeons & Doves
Zenaida macroura
mourning dove
Trochilidae
Hummingbirds
Calypte costaet
Costa's hummingbirdj
Turdidae
Thrush family
Salia mexicana
western blue bird
Tyrannidae
Tyrant Flycatchers
Sayornis saya
Say's phoebe
Accioitridae
Hawks, Kites, Eagles & Allies
Buteo Iineatus
red -shouldered hawk
Falconidae
Caracaras & Falcons
Falco sparverius
American kestrel
Mimidae
Mockingbirds& Thrashers
Mimus polyglottos
northern mockingbird
Corvidae
Crows & Ravens
Corvus corax
common raven
Corvus brachyrhynchos
American crow
Fringillidae
Fringilline & Cardueline Finches
Haemorhous mexicanus
house finch
Parulidae
New World Warblers
Setophaga coronata
yellow-rumped warbler

MAMMALIA

MAMMALS
Geomyidae
Pocket Gophers
Thomomys bottae (burrows & tailings)
Botta's pocket gopher
Cricetidae
Pack rats
Neotoma sp.

Wood rat species
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APPENDIX C

FIGURES
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Service Layer Credits: World Topographic Map: Agua Caliente Band of Indians, County of Riverside, California State Parks, Esri, TomTom, Gannin, SafeGraph, GeoTechnologies, Inc t I VNASA, USGS, Bureau of Land rktituftent, EPA, NI'S, USDA, USFWS Rancho Ramon "'
v,
N
imuth Park
Melody Ranch
Baristo Rd
Ramon Rd
Ramon Palms
Lawrence
Crossley
Los Pueblos
111
Ortega Rd
West Gate
Perez Ra
111
Sunair
Da Vali Dr
Date Palm
Country Club
m
73 a
Ga
Dinah
Mission Hills
Country Club
Sunny Ln
Tamarisk
Country Club
Project Location
Cypress Ln
Y-i
o
Sunnylands
Historic Estate
Springs Country
Club
Bob Hope Dr
Country Club Dr
Sunrise Country
Club
Rancho Mirage
Porcupine
Creek Golf
Course
Vista
Clancy Ln
1 inch =1 miles
0 0.5
COa
ch
Monterey Ave
11 Frank
Hovley
Monterey
Country Clul
Miles
Palm
FIGURE 1
Vicinity and Location
Howard World Wildlife Museum
Rancho Mirage
Riverside County, CA

Service
Layer Credits: USA Topo Maps: Copyright:© 2013 Na
ional Geographic Society, i-cubed
1 inch =2,000 feet O
0 1,000 2,000
Feet
IAN')
74 �ti MAN 11 E, ERVM'EO 4
«!ra.rw
'4G
71C, C Lines€
T PAT.

Project Location
FIGURE 2
USGS 7.5' Topo Quad: Rancho Mirage
Howard World Wildlife Museum
Rancho Mirage
Riverside County, CA
1659

Service Layer Credits: World Imagery: Maser
1 inch =200 feet
0 100
o
Project Boundary
Coachella fine sand, 0 to 2 percent slopes
Rock outcrop
200
(Feet
FIGURE 3
Soils
Howard World Wildlife Museum
Rancho Mirage
Riverside County, CA

Service Layer Credits: Wodd Imagery: Maser
1 inch =138 feet
100
Project Boundary
Vegetation Type
J Urban
0 200
(Feet
FIGURE 4
Vegetation Communities
Howard World Wildlife Museum
Rancho Mirage
Riverside County, CA

Project Boundary
Conservation Area
Santa Rosa and San Jacinto
Mountains Conservation Area
1 inch
0 0.5
Miles
=1 miles
FIGURE 5

CVMSHCP
Howard World Wildlife Museum
Rancho Mirage
Riverside County, CA

Service Laver Credits: World Imanery Earthstar Geographics 1 inch =1 miles
0 0.5 1
Mlles
0 Project Boundary
1 Mile Buffer
Critical Habitat
Casey's June Beetle
Peninsular bighorn sheep
FIGURE 6
Fish and Wildlife Services - Critical Habitat
Howard World Wildlife Museum
Rancho Mirage
Riverside County, CA

w"si r } finto ti
FIGURE 7
CNDDB
Howard World Wildlife Museum
Rancho Mirage
Riverside County, CA

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APPENDIX D

PHOTOGRAPHIC EXHIBITS
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N 30 60 I 90 120 350
• I• I• I• o• I• I• I• I• I• • I• I• I• I• I• I• I• I• I

NE E SE
0 79°E (T) • 33°45'59"N,116°26'38"W ±13ft ♦ 271ft
27 Jan 2025, 08:48:19
Photo 1. Parking lot located on project site.

N NE E SE
0 30 60 I 90 120 150
• I• I• I• I• I• I• I• I• I• I• I• I• I• I• I• I• I• I• O 77°E (T) • 33°46'0"N,116°26'36"W ±9ft • 276ft
Photo 2. Undisturbed rocky hillside.

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NW N I NE E
0 300 330 0 30 60 90
I• I• I I • I• I• I• I• I• I• I• I• I• I• I• I• I• I•
O 5°N (T) C7 33°45'57"N,116°26'38"W ±9ft ♦ 296ft
Photo 3. Vacant lot graded of vegetation.
210 240 270 I 300 330 0
• I • I • I • I • I • I • I • I • I • I • I • I • I • I • I, • I • I . I • SW
IN NW
N
O 283°W (T) O 33°45'59"N,116°26'35"W ±9ft ♦ 340ft
Photo 4. Looking west towards the Santa Rosa mountains, Photo was taken from on top of the rocky hill.

Howard Wildlife Museum Project BRAR
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Biological Resources AcsPssment & CUMSHCP Consistency Analysis Report Howard Wildlife Museum Project BRAR
M arch 2025
NE El SE
0 30 60 90 I 120 150
180
I • I • I • I • I • I • I • I • I • I • I • I • I • I • I • I • I • I • I • ® 94°E (T) O 33°45'59"N,116°26'35"W ±9ft ♦ 345ft
Photo 5. Looking east towards development near the project site.

Photo was taken from on top of the rocky hill.

NW N
300 330 0 30
NE
E
60 90
• I• I• I• I• I• I• I• I• I• I• I• I• I• I• I• I• I• l• I ® 9°N (T) * 33°46'0"N,116°26'35"W ±9ft ♦ 330ft
Photo 6. Looking north towards modular home community. Photo taken from the top of the rocky hill.

Howard Wildlife Museum Project BRAR
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Biological Resources Assessment & CVMS-ICP Consistency Analysis Report Howard Wildlife Museum Project BRAR
March 2025
E SE
90 120
150 I 180 210 240
S SW
• p• I• I. I• I• I• I• I• I• I• I• 1• I• I• I• I• I• I• I 0168°S (T) COQ 33°45'56"N,116°26'35"W ±9ft ♦ 345ft
27 Jan 2025, 10:33:10
Photo 7. Looking south towards development and Santa Rosa mountains. Photo taken from the top of the rock hill.

W NW N NE
270 300 330 0 30 60
I• I• I• I• I• I• I I I• I• I• I• I• I• I• I• I• I• I•
0 343°N (T) O 33°46'53"N,116°26'35"W ±9ft • 276ft
a% 1NTEAEU r
27 Jan 2025, 09:42:37
Photo 8. Photo depicting the compact nature of soils on -site.

Howard Wildlife Museum Project BRAR
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GLOBAL WILDLIFE DISCOVERY MUSEUM
Initial Study/Mitigated Negative Declaration
August 2025
Appendix C
Phasel
Historical / Archaeological Resources Survey
City of Rancho Mirage C
1670

PHASE I HISTORICAL/ARCHAEOLOGICAL RESOURCES SURVEY

HOWARD WORLD WILDLIFE MUSEUM PROJECT
Assessor's Parcel Nos. 689-040-023, -025, and -028
City of Rancho Mirage, Riverside County, California
For Submittal to:

Development Services Department, Planning Division
City of Rancho Mirage
69-825 Highway 111
Rancho Mirage, CA 92270
Prepared for:

Terra Nova Planning and Research, Inc.
42635 Melanie Place, Suite 101
Palm Desert, CA 92211
Prepared by:

CRM TECH
1016 East Cooley Drive, Suite AB
Colton, CA 92324
Bai "Tom" Tang, Principal Investigator
Michael Hogan, Principal Investigator
April 10, 2025
CRM TECH Contract No. 4233
1671

Title:

Authors:

Consulting Firm:

Date:

For Submittal to:

Prepared for:

Project Size:

USGS
Quadrangle:

Keywords:

Phase I Historical/Archaeological Resources Survey: Howard World Wildlife Museum Project; Assessor's Parcel Nos. 689-040-023, -025, and -028, City of Rancho Mirage, Riverside County, California Bai "Tom" Tang, Principal Investigator/Historian
Frank Raslich, Archaeologist/Report Writer
Daniel Ballester, Archaeologist/Field Director
Michael D. Richards, Archaeologist

CRM TECH
1016 East Cooley Drive, Suite A/B
Colton, CA 92324
(909) 824-6400
April 10, 2025
Development Services Department, Planning Division
City of Rancho Mirage
69-825 Highway 111
Rancho Mirage, CA 92270
(760) 328-2266
Nicole Criste, Principal
Terra Nova Planning and Research, Inc.
42635 Melanie Place, Suite 101
Palm Desert, CA 92211
(760) 341-4800
Approximately 6.67 acres
Cathedral City, Calif., 7.5' quadrangle (Section 3, T5S R5E, San Bernardino Baseline and Meridian)
Coachella Valley, western Colorado Desert; former site of the Rancho Mirage Chart House restaurant (Kendrick Bangs Kellogg, 1978); no "historical resources" present under CEQA
1672

EXECUTIVE SUMMARY
Between November 2024 and April 2025, at the request of Terra Nova Planning and Research, Inc., CRM TECH performed a cultural resources survey on approximately 6.67 acres of vacant land in the City of Rancho Mirage, Riverside County, California. The subject property of the study consists of Assessor's Parcel Nos. 689-040-023, -025, and -028, located north of the intersection of Highway 111 and Mirage Cove Drive, within Section 3 of Township 5 South, Range 5 East, San Bernardino Baseline and Meridian.

The study is part of the environmental review process for the proposed Howard World Wildlife Museum Project. The City of Rancho Mirage, as the lead agency for the project, required the study in compliance with the California Environmental Quality Act (CEQA). The purpose of the study is to provide the City with the necessary information and analysis to determine whether the project would cause substantial adverse changes to any "historical resources," as defined by CEQA, that may exist in or around the project area.

To identify such resources, CRM TECH conducted a historical/archaeological resources records search, initiated a Native American Sacred Lands File search, contacted pertinent Native American representatives, pursued historical background research, and carried out an intensive -level field survey. The results of these research procedures indicate that the project area once contained a building at 69-934 Highway 111 that was well-known for its "Organic Modern" architecture. Built in 1978 for the Chart House restaurant chain and designated by architect Kendrick Bangs Kellogg, the building was previously found to be eligible for listing in the National Register of Historic Places and was subsequently designated a local historic resource by the City of Rancho Mirage. After suffering extensive fire damage in 2012, however, the building was demolished in 2013.

No other potential "historical resources" were encountered within the project area throughout the course of the study. Based on these findings, CRM TECH recommends to the City of Rancho Mirage a conclusion of No Impact on "historical resources" for the proposed project.

No further cultural resources investigation is recommended for the project unless development plans undergo such changes as to include areas not covered by this study. However, if buried cultural materials are encountered during any earth -moving operations associated with the project, all work in that area should be halted or diverted until a qualified archaeologist can evaluate the nature and significance of the finds. Additionally, in recognition of the architectural merit of the Chart House building and its celebrity in the community, the project proponent may consider establishing a commemorative display at or near its former site as a point of local historical interest.
1673

TABLE OF CONTENTS
EXECUTIVE SUMMARY i
INTRODUCTION 1
SETTING 4
Current Natural Setting 4
Cultural Setting 4
Prehistoric Context 4
Ethnohistoric Context 6
Historic Context 7
RESEARCH METHODS 8
Records Search 8
Native American Participation 8
Historical Background Research 8
Field Survey 9
RESULTS AND FINDINGS 9
Records Search 9
Native American Participation 10
Historical Background Research 10
Field Survey 12
DISCUSSION 12
CONCLUSIONS AND RECOMMENDATIONS 13
REFERENCES 14
APPENDIX 1: Personnel Qualifications 17
APPENDIX 2: Native American Input 23
APPENDIX 3: California Historical Resources Inventory Site Record Forms 28

LIST OF FIGURES
Figure 1. Project vicinity 1
Figure 2. Project location 2
Figure 3. Recent satellite image of the project area 3
Figure 4. Overview of the current natural setting of the project area 5 Figure 5. The project area and vicinity in 1855-1856 11 Figure 6. The project area and vicinity in 1885-1903 11 Figure 7. The project area and vicinity in 1901 11
Figure 8. The project area and vicinity in 1941 12
Figure 9. The project area and vicinity in 1956-1958 12 1674

INTRODUCTION
Between November 2024 and April 2025, at the request of Terra Nova Planning and Research, Inc., CRM TECH performed a cultural resources survey on approximately 6.67 acres of vacant land in the City of Rancho Mirage, Riverside County, California (Figure 1). The subject property of the study consists of Assessor's Parcel Nos. 689-040-023, -025, and -028, located north of the intersection of Highway 111 and Mirage Cove Drive, within Section 3 of Township 5 South, Range 5 East, San Bernardino Baseline and Meridian (Figures 2, 3).

The study is part of the environmental review process for the proposed Howard World Wildlife Museum Project. The City of Rancho Mirage, as the lead agency for the project, required the study in compliance with the California Environmental Quality Act (CEQA; PRC §21000, et seq.). The purpose of the study is to provide the City with the necessary information and analysis to determine whether the project would cause substantial adverse changes to any "historical resources," as defined by CEQA, that may exist in or around the project area.

To identify such resources, CRM TECH conducted a historical/archaeological resources records search, initiated a Native American Sacred Lands File search, contacted pertinent Native American representatives, pursued historical background research, and carried out an intensive -level field survey. The following report is a complete account of the methods, results, and final conclusion of the study. Personnel who participated in the study are named in the appropriate sections below, and their qualifications are provided in Appendix 1.

Figure 1. Project vicinity. (Based on the USGS Santa Ana, Calif., 120'x60' quadrangle [USGS 1979]) Project
location
SCALE 1:250,000
5 10 miles
1 1675

•
4-
•
0 1000 0
34 .4_x_

INDIAN RESERYLTION '
I %)u
GOLF CUtIRSE
Taller dark _.
3000 4000 feet
Figure 2. Project location. (Based on the USGS Cathedral City and Rancho Mirage, Calif., 7.5' quadrangles [USGS 1981; 1988])
1676

Figure 3. Recent satellite image of the project area. (Based on Google Earth imagery) 1677

SETTING

CURRENT NATURAL SETTING
The City of Rancho Mirage is located in the northwestern portion of the Coachella Valley, a northwest -southeast trending desert valley that constitutes the western end of the Colorado Desert.

Dictated by this geographic setting, the climate and environment of the region are typical of the southern California desert country, marked by extremes in temperature and aridity. Temperatures in the region reach over 120 degrees Fahrenheit in summer and dip to freezing in winter. Average annual precipitation is less than five inches, and the average annual evaporation rate exceeds three feet.

The project area lies on the northeastern outskirts of the City of Rancho Mirage, between the San Jacinto Mountains to the west and the Whitewater River channel to the east, and within the largely urbanized Highway 111 corridor. It is bounded by Highway 111 on the west, Mirage Cove Drive on the south, a residential neighborhood on the east, and the Atrium shopping center and the Desert Braemar 55+ community on the north. The surface soil is composed of nonmarine Quaternary alluvial silty sand deposits in an ancient lake playa and terrace deposits consisting of semi - consolidated, fine- to coarse -grained sands and gravels (Jennings 1985). A granitic rocky knoll occupies the eastern portion of the project area, and the terrain on the rest of the property is generally level (Figure 4). Elevations range approximately from 285 feet to 366 feet above mean sea level.

The project location would be a part of the California Creosote Bush Scrub plant community, but the ground surface on much of the property has been cleared of native vegetation in the past. Flora and fauna observed in the project area remain mostly consistent to the Colorado Desert environment.

Currently, the vegetation on the property consists of creosote (Larrea tridentata), native and non- native palm trees, and various native grasses (Poaceae sp.; Schoenherr 1992; Figure 4).

CULTURAL SETTING
Prehistoric Context
Numerous investigations on the history of cultural development in southern California have led researchers to propose a number of cultural chronologies for the desert regions. A specific cultural sequence for the Colorado Desert was offered by Schaefer (1994) on the basis of the many archaeological studies conducted in the area. The earliest time period identified is the Paleoindian (ca. 8,000 to 10,000-12,000 years ago), when "small, mobile bands" of hunters and gatherers, who relied on a variety of small and large game animals as well as wild plants for subsistence, roamed the region (Schaefer 1994:63). These small groups settled "on mesas and terraces overlooking larger washes" (Schaefer 1994:64). The artifact assemblage of that period typically consists of very simple stone tools, "cleared circles, rock rings, [and] some geoglyph types" (Schaefer 1994:64).

The Early Archaic Period follows and dates to ca. 8,000 to 4,000 years ago. It appears that a decrease in population density occurred at this time and that the indigenous groups of the area relied more on foraging than hunting. Very few archaeological remains have been identified to this time period. The ensuing Late Archaic Period (ca. 4,000 to 1,500 years ago) is characterized by continued low population densities and groups of "flexible" sizes that settled near available seasonal food 1678

Figure 4. Overview of the current natural setting of the project area. (Photograph taken on March 20, 2025; view to the south)
resources and relied on "opportunistic" hunting of game animals. Stone grinding implements for food processing were prominent during this time period.

The most recent period in Schaefer's scheme, the Late Prehistoric, dates from ca. 1,500 years ago to the time of the Spanish missions and saw the continuation of the seasonal settlement pattern. Peoples of the Late Prehistoric Period were associated with the Patayan cultural pattern and relied more heavily on the availability of seasonal "wild plants and animal resources" (Schaefer 1994:66). It was during this period that ceramics and the bow and arrow were introduced into the region.

The shores of Holocene Lake Cahuilla, during times of its presence, attracted much settlement and resource procurement activities. In times of the lake's desiccation and absence, according to Schaefer (1994:66), the Native people moved away from its receding shores towards rivers, streams, and mountains. Numerous archaeological sites dating to the last high stand of Holocene Lake Cahuilla, roughly between 1600 and 1730 A.D., have been identified along its former shoreline.

Testing and mitigative excavations at these sites have recovered brown and buff ware ceramics, a variety of stone grinding tools and projectile point types, ornaments, and cremation remains. 5 1679

Ethnohistoric Context
The Coachella Valley is a historical center of Native American settlement, where U.S. surveyors noted large numbers of Indian villages and rancherias, occupied by the Cahuilla people, in the mid - 19th century. The origin of the name "Cahuilla" is unclear but may be from their own word kawiya, meaning master or boss (Bean 1978). The Takic-speaking Cahuilla are generally divided by anthropologists into three groups according to their geographic setting: the Pass Cahuilla of the San Gorgonio Pass -Palm Springs area, the Mountain Cahuilla of the San Jacinto and Santa Rosa Mountains and the Cahuilla Valley, and the Desert Cahuilla of the eastern Coachella Valley. The basic written sources on Cahuilla culture and history include Kroeber (1925), Strong (1929), and Bean (1978), based on information provided by such Cahuilla informants as Juan Siva, Francisco Patencio, Katherine Siva Saubel, and Mariano Saubel. The following ethnohistoric discussion is derived primarily from these sources.

The Cahuilla did not have a single name that referred to an all-inclusive tribal affiliation. Instead, membership was in terms of lineages or clans. Each lineage or clan belonged to one of two main divisions of the people, known as moieties. Their moieties were named for the Wildcat, or Tuktum, and Coyote, or Istam. Members of clans in one moiety had to marry into clans from the other moiety. Individual clans had villages, or central places, and territories they called their own, for purposes of hunting game, and gathering raw materials for food, medicine, ritual, or tool use. They interacted with other clans through trade, intermarriage, and ceremonies.

Cahuilla subsistence was defined by the surrounding landscape and primarily based on the hunting and gathering of wild and cultivated foods, exploiting nearly all of the resources available in a highly developed seasonal mobility system. They were adapted to the arid conditions of the desert floor, the lacustral cycles of Holocene Lake Cahuilla, and the environments of the nearby mountains. When the lake was full, or nearly full, the Cahuilla would take advantage of the resources presented by the body of fresh water, building elaborate stone fish traps. Once the lake had desiccated, they relied on the available terrestrial resources. The cooler temperatures and resources available at higher elevations in the nearby mountains were also taken advantage of.

The Cahuilla diet included seeds, roots, wild fruits and berries, acorns, wild onions, pifion nuts, and mesquite and screw beans. Medicinal plants such as creosote, California sagebrush, yerba buena and elderberry were typically cultivated near villages (Bean and Saubel 1972). Common game animals included deer, antelope, big horn sheep, rabbits, wood rats and, when Holocene Lake Cahuilla was present, fish and waterfowl. The Cahuilla hunted with throwing sticks, clubs, nets, traps, and snares, as well as bows and arrow (Bean 1978; CSRI 2002). Common tools included manos and metates, mortars and pestles, hammerstones, fire drills, awls, arrow -straighteners, and stone knives and scrapers. These lithic tools were made from locally sourced material as well as materials procured through trade or travel. They also used wood, horn, and bone spoons and stirrers; baskets for winnowing, leaching, grinding, transporting, parching, storing, and cooking; and pottery vessels for carrying water, storage, cooking, and serving food and drink (Bean 1978; CSRI 2002).

As the landscape defined their subsistence practices, the tending and cultivation practices of the Cahuilla helped shape the landscape. Biological studies have recently found evidence that the fan palms found in the Coachella Valley and throughout the southeastern California desert 16 6 0

(Washingtonia filifera) may not be relics from a paleo-tropical environment, but instead a relatively recent addition brought to the area and cultivated by native populations (Anderson 2005). The planting of palms by the Cahuilla is well -documented, as is their enhancement of palm stands through the practice of controlled burning (Anderson 2005; Bean and Saubel 1972). Burning palm stands would increase fruit yield dramatically by eliminating pests such as the palm borer beetle, date scales, and spider mites (Bean and Saubel 1972). It also prevented out -of -control wildfires by eliminating dead undergrowth before it accumulated to dangerous levels. The Cahuilla also burned stands of chia to produce higher yields, and deergrass to yield straighter, more abundant stalks for basketry (Bean and Saubel 1972; Anderson 2005).

Population data prior to European contact is almost impossible to obtain, but estimates range from 3,600 to as high as 10,000 persons covering a territory of over 2,400 square miles. During the 19th century, the Cahuilla population was decimated as a result of European diseases, most notably smallpox, for which the Native peoples had no immunity. Today, Native Americans of Pass or Desert Cahuilla heritage are mostly affiliated with one or more of the Indian reservations in and near the Coachella Valley, including Agua Caliente, Morongo, Cabazon, Torres Martinez, and Augustine.

There has been a resurgence of traditional ceremonies in recent years, and the language, songs, and stories are now being taught to the youngest generations.

Historic Context
In 1823-1825, Jose Romero, Jose Maria Estudillo, and Romualdo Pacheco became the first noted European explorers to travel through the Coachella Valley when they led a series of expeditions in search of a route to Yuma (Johnston 1987:92-95). Due to its harsh environment, few non -Indians ventured into the desert valley during the Mexican and early American periods, except those who traveled along the established trails. The most important of these trails was the Cocomaricopa Trail, an ancient Indian trading route that was "discovered" in 1862 by William David Bradshaw and known after that as the Bradshaw Trail (Gunther 1984:71; Ross 1992:25). In much of the Coachella Valley, this historic wagon road traversed a similar course to that of present-day Highway 111.

During the 1860s -1870s, the Bradshaw Trail served as the main thoroughfare between coastal southern California and the Colorado River, until the completion of the Southern Pacific Railroad in 1876-1877 brought an end to its heyday (Johnston 1987:185).

Non -Indian settlement in the Coachella Valley began in the 1870s with the establishment of railroad stations along the Southern Pacific Railroad and spread further in the 1880s after public land was opened for claims under the Homestead Act, the Desert Land Act, and other federal land laws (Laflin 1998:35-36; Robinson 1948:169-171). Farming became the dominant economic activity in the valley thanks to the development of underground water sources, often in the form of artesian wells. Around the turn of the century, the date palm was introduced into the Coachella Valley, and by the late 1910s dates were the main agricultural crop and the tree an iconic image celebrating the region as the "Arabia of America" (Shields Date Gardens 1957). Then, starting in the 1920s, a new industry featuring equestrian camps, resorts, hotels, and eventually country clubs began to spread throughout the Coachella Valley, transforming it into southern California's premier winter retreat.

In the Rancho Mirage area, the first notable settlement activities occurred in the 1910s -1920s, when several date ranches were established in the present-day city boundary (Love and Tang 1996:7). In 1924, R.P. "Bert" Davie and E.E. McIntyre subdivided the Rancho Rio del Sol Estates around 16 6 1

today's Clancy Lane, creating a small community nicknamed "Little Santa Monica" (Love and Tang 1996:8). Ten years later, Louis Blankenhorn and Laurence Macomber began a new subdivision at the mouth of Magnesia Spring Canyon, and for the first time bestowed the name Rancho Mirage on the community (Love and Tang 1996:8). After the end of WWII, Rancho Mirage embarked on a period of rapid growth. With the development of the Thunderbird Country Club and the Tamarisk Country Club in 1951-1952, Rancho Mirage set the trend in the post -WWII boom among the five cove communities along Highway 111 (Love and Tang 1996:8-9). This trend has continued into the present and has given rise to the City of Rancho Mirage's popular reputation as the "country club city."

RESEARCH METHODS

RECORDS SEARCH
On February 27, 2025, CRM TECH archaeologist Deirdre Encarnacion completed the historical/ archaeological resources records search for this study at the South Coastal Information Center (SCIC) of the California Historical Resources Information System. Located on the campus of San Diego State University, the SCIC is the State of California's official cultural resource records repository for Riverside County. The purpose of the records search was to compile a complete inventory of previously identified cultural resources and existing cultural resources reports within a one -mile radius of the project location. In addition to the SCIC records, CRM TECH also consulted archival records of the City of Rancho Mirage for pertinent information on a cultural resource that was previously located on the property (see further discussion below).

NATIVE AMERICAN PARTICIPATION
On January 24, 2025, CRM TECH submitted a written request to the State of California Native American Heritage Commission (NAHC) for a records search in the commission's Sacred Lands File. In the meantime, CRM TECH also contacted the nearby Agua Caliente Band of Cahuilla Indians (ACBCI) for additional information on potential Native American cultural resources in the project vicinity and to arrange for tribal participation in the upcoming archaeological field survey.

The responses from the NAHC and the ACBCI are summarized below and attached to this report in Appendix 2.

HISTORICAL BACKGROUND RESEARCH
Historical background research for this study was conducted by CRM TECH principal investigator/ historian Bai "Tom" Tang. Sources consulted during the research included primarily published literature in local and regional history, contemporary news accounts, U.S. General Land Office (GLO) land survey plat maps dated 1856-1905, United States Geological Survey (USGS) topographic maps dated 1904-1988, and aerial/satellite photographs taken in 1954-2024. The historical maps are available at the websites of the U.S. Bureau of Land Management and the USGS, and the aerial/satellite photographs are available at the website of Nationwide Environmental Title Research (NETR) Online and through the Google Earth software. 162

FIELD SURVEY
On March 18, 2025, CRM TECH archaeologist Michael D. Richards carried out the field survey of the relatively level portion of the project area with the assistance of ACBCI cultural resources analysts Luz Salazar and Loriea Gregory from the Tribal Historic Preservation Office. The survey was conducted at an intensive level by walking a series of parallel north -south transects at 15 -meter (approximately 50 -foot) intervals. On March 20, CRM TECH archaeologist/field director Daniel Ballester conducted a similar survey on the knoll in the eastern portion of the property, with the transects placed opportunistically along the contours of the terrain. In this way, the ground surface in the entire project area was systematically and carefully examined for any evidence of human activities dating to the prehistoric or historic period (i.e., 50 years or older). Except for a paved parking lot in the northwestern portion of the project area, surface visibility was generally fair (70-80 percent) to excellent (90-100 percent) depending on the presence or absence of scattered vegetation growth (Figure 4).

RESULTS AND FINDINGS

RECORDS SEARCH
According to SCIC records, in 2012 the project area was included in the scope of a large-scale archaeological sensitivity assessment along the Whitewater River channel (Mirro 2012). However, that study did not include any archaeological fieldwork (Mirro 2012:18), and the SCIC had no records suggesting that the project area had been surveyed systematically for cultural resources prior to this study. Documentation that CRM TECH had previously obtained from the City of Rancho Mirage indicates that a building once located in the northwestern portion of the project area had been recorded in 2002 on standard record forms for the California Historical Resources Inventory (Moruzzi et al. 2002; see Appendix 3), but the records search at the SCIC yielded no evidence that this locality had been incorporated into the inventory.

Located at 69-934 Highway 111 and wrapped around the western tip of the knoll, the building recorded in 2002 was then home to a Chart House restaurant. It was designed by architect Kendrick Bangs Kellogg (1934-2024) and constructed in 1978, not yet meeting the usual 50 -year age threshold for listing in the National Register of Historic Places at the time of its recordation or even today. Nonetheless, the 2002 study concluded that the building was eligible for the National Register due to its exceptional architectural merit "as a unique and outstanding example of `Organic Modern' design, sensitively integrated into its site and responsive to the desert climate" (Moruzzi et al. 2002:2-3). In 2004, the building was designated by the City of Rancho Mirage as a local historic resource (City of Rancho Mirage 2012:1).

In January 2012, the building caught on fire and suffered extensive damage (McGinty and Indrelunas 2012; City of Rancho Mirage 2012:1-2). After the fire, further studies were commissioned by the City to explore possible means to avoid or reduce impact on the significance of this historic building, such as restoration, reconstruction, or mitigation (Tang 2012; City of Rancho Mirage 2012), and much public discussion ensued in the City's decision -making process (City of Rancho Mirage 2013a; 2013b). Ultimately, the City concluded that it was infeasible for the building 163

to be restored and that, under the circumstances, the issuance of a demolition permit was a ministerial act exempt from CEQA review (City of Rancho Mirage 2013b; 2013c). The former Chart House building was subsequently removed in March 2013 (Herzog 2013).

Within the one -mile scope of the records search, SCIC records identify a total of 28 previous studies completed on various tracts of land and linear features between 1978 and 2017. As a result of these and other similar studies in the vicinity, two historic -period sites and one prehistoric (i.e., Native American) site were previously recorded within the one -mile radius. One of the historic -period sites, 33-005513, represented the Peterson Ranch, featuring a circa 1930s vernacular wood -frame house in a date garden (Wagner 1982), while the other, 33-026849 (CA-RIV-12616H), was a small refuse deposit (Duryea 2015). The prehistoric site, 33-000628 (CA-RIV-628T), consisted of trail segments found on the slopes of the San Jacinto Mountains, along with several rock cairns (Banks 1979; Parr and Arkush 1988; Bissell 2000). All three of these sites were found more than a quarter -mile from the project location. Therefore, none of them requires further consideration during this study.

NATIVE AMERICAN PARTICIPATION
In response to CRM TECH's inquiry, the NAHC stated in a letter dated February 3, 2025, that the Sacred Lands File identified no Native American cultural resources in the project vicinity but recommended contacting local Native American groups for further information. For that purpose, the NAHC provided a referral list of 22 individuals affiliated with 11 Native American groups in the region. The NAHC's reply is attached to this report in Appendix 2 for reference by the City of Rancho Mirage in future government -to -government consultations, if necessary.

As mentioned above, CRM TECH contacted the ACBCI, which is the nearest Native American group to the project location, as a part of the research procedures. As a result, ACBCI cultural resources analysts Luz Salazar and Loriea Gregory participated in the archaeological field survey. In addition, Ms. Salazar responded on behalf of the ACBCI in a letter dated February 14, 2025. In the letter, Ms. Salazar identified the project location as a part of the tribe's Traditional Use Area.

Therefore, the ACBCI requested copies of all cultural resources documentation generated for this project for review by the Tribal Historic Preservation Office as well as the presence of Agua Caliente Native American Cultural Resource Monitor(s) during any ground -disturbing activities associated with the project (see Appendix 2).

HISTORICAL BACKGROUND RESEARCH
Historical sources consulted for this study demonstrate that the project area has long been a part of the main travel corridor across the Coachella Valley. In the mid -1850s, when the U.S. government conducted the earliest systematic land surveys in the region, a major trail was seen traversing in a generally northwest -southeast direction less than a half -mile north of the project location, undoubtedly a part of the historic Cocomaricopa-Bradshaw Trail (Figure 5). By the turn of the century, the main branch of the trail, identified as the "Road from Colorado River to San Bernardino," had come much closer to the project area, passing roughly 200 feet from the northeastern corner of the property (Figures 6, 7). During the early 20th century, the old wagon road was replaced by an automobile highway that the County of Riverside built on the west side of the project area, which would later become a part of present-day Highway 111 (Figure 8). 166)4

Figure 5. The project area and vicinity in 1855-1856.
(Source: GLO 1856a; 1856b)
1 2000 4000 feet
o
4000 feet
Project
area _
tom.
�
ti ciJ.ii
64-O,76
yry f
Rf
Despite its close proximity to these successive
generations of transportation thoroughfares, the
project area evidently remained unsettled and
undeveloped until the mid -20th century (Figures
5-9). The first development on the property, in
the form of a relatively large building of
unknown nature on the corner of Highway 111
and Mirage Cove Drive, occurred sometime
between 1941 and 1954, most likely during the
post -WWII boom (Figures 8, 9; NETR Online
1954). In 1972-1975, this building and all of its
associated features were removed and the Chart
House restaurant was built on the northwestern
portion of the property in 1978, along with most
of the paved parking area that is still present
today (NETR Online 1954-2022; Moruzzi et al.
2002). After Chart House was closed in 2003, a
series of other restaurants operated at the same
location until the fire destroyed much of the
building on January 10, 2012 (McGinty 2012;
Herzog and Atagi 2013). As mentioned above,
the building was demolished on March 19, 2013,
Project
area
4P -I9
Figure 6. The project area and vicinity in 1885-1903.
(Source: GLO 1886; 1905)
Figure 7. The project area and vicinity in 1901. (Source:

USGS 1904)
165

li, Y.kL V A11 V N
�c i Mc 3o
� — Ranch
Sryde,
1 R ❑ale Garden
34 Cathedral City __ AMs3s.x
'- \. -ISM 3187 r� •35
115e • • Project
area
9 SCALE 1:62,500
0 1 mile
Figure 8. The project area and vicinity in 1941. (Source:

USGS 1941a; 1941b)
Figure 9. The project area and vicinity in 1956-1958.
(Source: USGS 1958)
C.t
SCALE 1:24,000
1000 2000 feet
I I I
and the entire project area has been vacant and largely unused since then (NETR Online 2012-2022; Herzog 2013).

FIELD SURVEY
The field survey of the project area encountered no potential "historical resources." The results of the survey confirmed that the former Chart House building had been completely removed, leaving little physical trace of its 35 -year presence except the paved parking lot nearby, which remains in occasional use by shoppers at the adjacent Atrium shopping center. A concrete slab foundation was noted near the southern end of the project area, where a building stood in the 1950s -1970s (see above), but no evidence of any historic -period artifact deposit was found in association. With the removal of the building in the 1970s, and exhibiting little promise for any archaeological data, the foundation is not considered a potential "historical resource" and requires no further study. Scattered modern refuse, such as bottle fragments, cans, paper, plastic scraps, and building debris, was observed over much of the property, but none of these items was found to be of any historical/ archaeological interest.

DISCUSSION
CEQA establishes that a project that may cause a substantial adverse change in the significance of a "historical resource" is a project that may have a significant effect on the environment (PRC §21084.1). "Substantial adverse change," according to PRC §5020.1(q), "means demolition, 166

destruction, relocation, or alteration such that the significance of a historical resource would be impaired." As defined by PRC §5020.1(j), 'historical resource' includes, but is not limited to, any object, building, site, area, place, record, or manuscript which is historically or archaeologically significant, or is significant in the architectural, engineering, scientific, economic, agricultural, educational, social, political, military, or cultural annals of California." More specifically, CEQA guidelines state that the term "historical resources" applies to any such resources listed in or determined to be eligible for listing in the California Register of Historical Resources, included in a local register of historical resources, or determined to be historically significant by the lead agency (Title 14 CCR §15064.5(a)(1)-(3)). Regarding the proper criteria for the evaluation of historical significance, CEQA guidelines mandate that "generally a resource shall be considered by the lead agency to be `historically significant' if the resource meets the criteria for listing on the California Register of Historical Resources" (Title 14 CCR §15064.5(a)(3)). A resource may be listed in the California Register if it meets any of the following criteria:
(1) Is associated with events that have made a significant contribution to the broad patterns of California's history and cultural heritage.
(2) Is associated with the lives of persons important in our past. (3) Embodies the distinctive characteristics of a type, period, region, or method of construction, or represents the work of an important creative individual, or possesses high artistic values. (4) Has yielded, or may be likely to yield, information important in prehistory or history. (PRC §5024.1(c))
In summary of the research results presented above, the 1978 Chart House restaurant building that was once located in the project area was previously found to be eligible for listing in the National Register of Historic Places, for which the criteria are essentially identical to those for the California Register, and was subsequently designated a local historic resource by the City of Rancho Mirage.

However, the building is no longer extant today, having been demolished in 2013 after suffering fire damage. No other potential "historical resources" were encountered throughout the course of the study. Therefore, the present study concludes that no "historical resources" exist within the project area.

CONCLUSIONS AND RECOMMENDATIONS
In conclusion, the project area was once the site of the "Organic Modern" Chart House restaurant building, a well -recognized architectural masterpiece and a popular local landmark, but no "historical resources," as defined by CEQA, are currently present within the project area. Based on these findings, CRM TECH presents the following recommendations to the City of Rancho Mirage:
• The proposed project will not cause a substantial adverse change to any known "historical resources."
• No further cultural resources investigation is necessary for the project unless development plans undergo such changes as to include areas not covered by this study. • If buried cultural materials are discovered during any earth -moving operations associated with the project, all work in that area should be halted or diverted until a qualified archaeologist can evaluate the nature and significance of the finds.
167

• In recognition of the architectural merit of the Chart House building and its celebrity in the community, the project proponent may consider establishing a commemorative display at or near its former site as a point of local historical interest.

REFERENCES
Anderson, M. Kat
2005 Tending the Wild: Native American Knowledge and the Management of California's Natural Resources. University of California Press, Berkeley.

Banks, Thomas
1979 California Historical Resources Inventory record forms, Site 33-000628 (CA-RIV-628T).

On file, South Coastal Information Center, San Diego State University, San Diego, California.

Bean, Lowell John
1978 Cahuilla. In Robert F. Heizer (ed.): Handbook of North American Indians, Vol. 8:

California; pp. 575-587. Smithsonian Institution, Washington, D.C.

Bean, Lowell John, and Katherine Siva Saubel
1972 Temalpakh: Cahuilla Indian Knowledge and Usage of Plants. Malki Museum Press, Banning, California.

Bissell, Ron M.
2000 California Historical Resources Inventory record forms, Site 33-000628 (CA-RIV-628T; update). On file, South Coastal Information Center, San Diego State University, San Diego, California.

City of Rancho Mirage
2012 Environmental Initial Study: Proposed Demolition of Fire -Damaged Structure Commonly Known as the Chart House Restaurant (Case No. EA120004); draft. Copy previously obtained from the City of Rancho Mirage.
2013a City Council, Library Board, Housing Authority Board, the City Council Representing the Redevelopment Successor Agency and the Community Facilities District, Regular Meeting, Thursday, January 17, 2013, 1:00 P.M., Minutes. Copy provided by the City of Rancho Mirage. 2013b City Council, Library Board, Housing Authority Board, the City Council Representing the Redevelopment Successor Agency, Regular Meeting, Thursday, February 7, 2013, 1:00 P.M., Minutes. Copy provided by the City of Rancho Mirage.
2013c City Council Resolution No. 2013-07. Copy provided by the City of Rancho Mirage.

CSRI (Cultural Systems Research, Inc.)
2002 The Native Americans of Joshua Tree National Park: An Ethnographic Overview and Assessment Study. Http:// www.cr.nps.gov/history/online_books/jotr/history6.htm .

Duryea, Dean
2015 California Historical Resources Inventory record forms, Site 33-026849 (CA-RIV- 12616H). On file, South Coastal Information Center, San Diego State University, San Diego, California.

GLO (General Land Office, U.S. Department of the Interior) 1856a Plat map: Township No. 4 South Range No. 5 East, SBBM; surveyed in 1855-1856. 1856b Plat map: Township No. 5 South Range No. 5 East, SBBM; surveyed in 1855-1856. 1886 Plat map: Township No. 4 South Range No. 5 East, SBBM; surveyed in 1885. 1905 Plat map: Township No. 5 South Range No. 5 East, SBBM; surveyed in 1903. 16d8

Gunther, Jane Davies
1984 Riverside County, California, Place Names: Their Origins and Their Stories. J.D.

Gunther, Riverside.

Herzog, Blake
2013 Chart House Building's Demise: "It Was a Work of Art." The Desert Sun (Palm Springs, California) March 20:A1, A7.

Herzog, Blake, and Colin Atagi
2013 Iconic Building to Be Leveled. The Desert Sun (Palm Springs, California) February 8:B1, B2.

Jennings, C.W.
1985 An explanatory Text to Accompany the 1:750,000 Scale Fault And Geologic Maps of California. California Division of Mines and Geology Bulletin 201. Sacramento.

Johnston, Francis J.
1987 The Bradshaw Trail; revised edition. Historical Commission Press, Riverside.

Kroeber, Alfred L.
1925 Handbook of the Indians of California. Bureau of American Ethnology Bulletin 78.

Government Printing Office, Washington, D.C.

Laflin, Patricia
1998 Coachella Valley California: A Pictorial History. The Donning Company, Virginia Beach, Virginia.

Love, Bruce, and Bai "Tom" Tang
1996 Cultural Resources Report: Rancho Mirage General Plan, City of Rancho Mirage, Riverside County, California. On file, South Coastal Information Center, San Diego State University, San Diego, California.

McGinty, Kate, and Brian Indrelunas
2012 Fire Destroys Local Landmark. The Desert Sun (Palm Springs, California) January 11:A1, A2.

Mirro, Michael
2012 Archaeological Sensitivity Model for the Whitewater River Stormwater Channel, Riverside County, California. On file, South Coastal Information Center, San Diego State University, San Diego, California.

Moruzzi, Peter, Teresa Grimes, and Leslie Heumann
2002 California Historical Resources Inventory record forms (Chart House Restaurant, 69-934 Highway 111). Prepared by Leslie Heumann and Associates, Los Angeles. Copy previously obtained from the City of Rancho Mirage.

NETR (Nationwide Environmental Title Research) Online
1954-2020 Aerial/satellite photographs of the project vicinity; taken in 1954, 1959, 1972, 1975, 1979, 1984, 1996, 2002, 2005, 2009, 2010, 2012, 2014, 2016, 2018, 2020, and 2022. http://www.historicaerials.com .

Parr, R.E, and B.S. Arkush
1988 California Historical Resources Inventory record forms, Site 33-000628 (CA-RIV-628T; update). On File, South Coastal Information Center, San Diego State University, San Diego, California.

Robinson, W.W.
1948 Land in California. University of California Press, Berkeley. 169

Ross, Delmer G.
1992 Gold Road to La Paz: An Interpretive Guide to the Bradshaw Trail. Tales of the Mojave Road Publishing Company, Essex, California.

Schaefer, Jerry
1994 The Challenge of Archaeological Research in the Colorado Desert: Recent Approaches and Discoveries. Journal of California and Great Basin Anthropology 16(1):60-80.

Schoenherr, Allan A.
1992 A Natural History of California. University of California Press. Berkeley.

Shields Date Gardens
1957 Coachella Valley Desert Trails and the Romance and Sex Life of the Date. Shields Date Gardens, Indio.

Strong, William Duncan
1929 Aboriginal Society in Southern California. University of California Publications in American Archaeology and Ethnology, Vol. 26.

Tang, Bai "Tom"
2012 Historic Building Study: Former Chart House, 69-934 Highway 111, City of Rancho Mirage, Riverside County, California. Report prepared for Terra Nova Planning and Research, Inc., by CRM TECH.

USGS (United States Geological Survey, U.S. Department of the Interior) 1904 Map: Indio, Calif. (30', 1:125,000); surveyed in 1901. 1941a Map: Edom, Calif. (15', 1:62,500); aerial photographs taken in 1941. 1941b Map: Toro Peak, Calif. (15', 1:62,500); aerial photographs taken in 1941. 1958 Map: Cathedral City, Calif. (7.5', 1:24,000); aerial photographs in 1956. 1979 Map: Santa Ana, Calif. (120'x60'; 1:250,000); 1959 edition revised. 1981 Map: Cathedral City, Calif. (7.5', 1:24,000); 1958 edition photorevised in 1978. 1988 Map: Rancho Mirage, Calif. (7.5', 1:24,000); 1957 edition photorevised in 1984.

Wagner, Jim
1982 California Historical Resources Inventory record forms, Site 33-005513. On file, South Coastal Information Center, San Diego State University, San Diego, California. 1660

APPENDIX 1:

PERSONNEL QUALIFICATIONS

PRINCIPAL INVESTIGATOR/HISTORIAN
Bai "Tom" Tang, M.A.

Education
1988-1993 Graduate Program in Public History/Historic Preservation, University of California, Riverside.
1987 M.A., American History, Yale University, New Haven, Connecticut. 1982 B.A., History, Northwestern University, Xi'an, China. 2000 "Introduction to Section 106 Review," presented by the Advisory Council on Historic Preservation and the University of Nevada, Reno.
1994 "Assessing the Significance of Historic Archaeological Sites," presented by the Historic Preservation Program, University of Nevada, Reno.

Professional Experience
2002- Principal Investigator, CRM TECH, Riverside/Colton, California. 1993-2002 Project Historian/Architectural Historian, CRM TECH, Riverside, California. 1993-1997 Project Historian, Greenwood and Associates, Pacific Palisades, California. 1991-1993 Project Historian, Archaeological Research Unit, University of California, Riverside. 1990 Intern Researcher, California State Office of Historic Preservation, Sacramento. 1990-1992 Teaching Assistant, History of Modern World, University of California, Riverside. 1988-1993 Research Assistant, American Social History, University of California, Riverside. 1985-1988 Research Assistant, Modern Chinese History, Yale University. 1985-1986 Teaching Assistant, Modern Chinese History, Yale University. 1982-1985 Lecturer, History, Xi'an Foreign Languages Institute, Xi'an, China.

Cultural Resources Management Reports
Preliminary Analyses and Recommendations Regarding California's Cultural Resources Inventory System (with Special Reference to Condition 14 of NPS 1990 Program Review Report). California State Office of Historic Preservation working paper, Sacramento, September 1990.

Numerous cultural resources management reports with the Archaeological Research Unit, Greenwood and Associates, and CRM TECH, since October 1991. 16��1

PRINCIPAL INVESTIGATOR/ARCHAEOLOGIST
Michael Hogan, Ph.D., RPA (Registered Professional Archaeologist) Education
1991 Ph.D., Anthropology, University of California, Riverside. 1981 B.S., Anthropology, University of California, Riverside; with honors. 1980-1981 Education Abroad Program, Lima, Peru.
2002 "Section 106 —National Historic Preservation Act: Federal Law at the Local Level," UCLA Extension Course #888.
2002 "Recognizing Historic Artifacts," workshop presented by Richard Norwood, Historical Archaeologist.
2002 "Wending Your Way through the Regulatory Maze," symposium presented by the Association of Environmental Professionals.
1992 "Southern California Ceramics Workshop," presented by Jerry Schaefer. 1992 "Historic Artifact Workshop," presented by Anne Duffield -Stoll.

Professional Experience
2002- Principal Investigator, CRM TECH, Riverside/Colton, California. 1999-2002 Project Archaeologist/Field Director, CRM TECH, Riverside, California. 1996-1998 Project Director and Ethnographer, Statistical Research, Inc., Redlands, California. 1992-1998 Assistant Research Anthropologist, University of California, Riverside. 1992-1995 Project Director, Archaeological Research Unit, U.C. Riverside. 1993-1994 Adjunct Professor, Riverside Community College, Mt. San Jacinto College, U.C.

Riverside, Chapman University, and San Bernardino Valley College. 1991-1992 Crew Chief, Archaeological Research Unit, U.C. Riverside. 1984-1998 Project Director, Field Director, Crew Chief, and Archaeological Technician for various southern California cultural resources management firms.

Research Interests
Cultural Resource Management, Southern Californian Archaeology, Settlement and Exchange Patterns, Specialization and Stratification, Culture Change, Native American Culture, Cultural Diversity.

Cultural Resources Management Reports
Principal investigator for, author or co-author of, and contributor to numerous cultural resources management study reports since 1986.

Memberships
Society for American Archaeology; Society for California Archaeology; Pacific Coast Archaeological Society; Coachella Valley Archaeological Society. 16J2

PROJECT ARCHAEOLOGIST/REPORT WRITER
Frank J. Raslich, M.A.

Education
2016-
2010
2005
2019
2014
Ph.D. candidate, Michigan State University, East Lansing.

M.A., Anthropology, Michigan State University, East Lansing.

B.A., Anthropology, University of Michigan, Flint.

Grant and Research Proposal Writing for Archaeologists; Society for American Archaeology online seminar.

Bruker Industries Tracer S 1800 pXRF Training; presented by Dr. Bruce Kaiser, Bruker Scientific.

Professional Experience
2022-
2022
2014-2022
2008-2021
2019
2016-2018
2017-2018
2009-2017
2008-2014
2010-2013
2009-2011
Publications
2017
2013
Project Archaeologist/Report Writer, CRM TECH, Colton, California.

Archaeological Monitor, Agua Caliente Band of Cahuilla Indians, Palm Springs, California.

Board of Directors, Ziibiwing Center of Anishinabe Culture and Lifeways, Saginaw Chippewa Indian Tribe of Michigan.

Archaeological Consultant, Saginaw Chippewa Indian Tribe of Michigan.

Archaeologist, Sault Tribe of Chippewa Indians and Little Traverse Bay Band of Odawa Indians.

Adjunct Lecturer, Michigan State University, East Lansing.

Adjunct Lecturer, University of Michigan, Flint.

Teaching Assistant, Michigan State University, East Lansing.

Research Assistant, Intellectual Property Issues in Cultural Heritage, Simon Fraser University, British Columbia, Canada.

Research Assistant, Michigan State University, East Lansing.

Archaeologist/Crew Chief, Saginaw Chippewa Indian Tribe of Michigan.

Preliminary Results of a Handheld X -Ray Fluorescence (pXRF) Analysis on a Marble Head Sarcophagus Sculpture from the Collection of the Kresge Art Center, Michigan State University. Submitted to Jon M. Frey, Department of Art, Art History, and Design, Michigan State University, East Lansing.

Geochemical Analysis of the Dickenson Group of the Upper Peninsula, Michigan: A study of an Accreted Terrane of the Superior Province. Geological Society of America Abstracts with Programs 45:4(53).
1693

PROJECT ARCHAEOLOGIST/FIELD DIRECTOR
Daniel Ballester, M.S., RPA (Registered Professional Archaeologist) Education
2013 M.S., Geographic Information System (GIS), University of Redlands, California. 1998 B.A., Anthropology, California State University, San Bernardino. 1997 Archaeological Field School, University of Las Vegas and University of California, Riverside.
1994 University of Puerto Rico, Rio Piedras, Puerto Rico. 2021 An Introduction to Geoarchaeology: How Understanding Basic Soils, Sediments, and Landforms Can Make You a Better Archaeologist; Society for American Archaeology online seminar.
2007 Certificate in Geographic Information Systems (GIS), California State University, San Bernardino.
2002 Historic Archaeology Workshop; presented by Richard Norwood, Base Archaeologist, Edwards Air Force Base, at CRM TECH, Riverside, California.

Professional Experience
2002- Field Director/GIS Specialist, CRM TECH, Riverside/Colton, California. 2011-2012 GIS Specialist for Caltrans District 8 Project, Garcia and Associates, San Anselmo, California.
2009-2010 Field Crew Chief, Garcia and Associates, San Anselmo, California. 2009-2010 Field Crew, ECorp, Redlands.
1999-2002 Project Archaeologist, CRM TECH, Riverside, California. 1998-1999 Field Crew, K.E.A. Environmental, San Diego, California. 1998 Field Crew, A.S.M. Affiliates, Encinitas, California. 1998 Field Crew, Archaeological Research Unit, University of California, Riverside.

Cultural Resources Management Reports
Field Director, co-author, and contributor to numerous cultural management reports since 2002. 16§4

PROJECT ARCHAEOLOGIST
Deirdre Encarnacion, M.A.

Education
2003
2000
2021
2001
2000
M.A., Anthropology, San Diego State University, California.

B.A., Anthropology, minor in Biology, with honors, San Diego State University, California.

Certificate of Specialization, Kumeyaay Studies, Cuyamaca College, California.

Archaeological Field School, San Diego State University.

Archaeological Field School, San Diego State University.

Professional Experience
2016-
2004-
2001-2003
2001
2001
Presentations
2023
2023
2022
2022
Memberships
Archaeological Consultant, Friends of Maha'ulepu, Koloa, Hawai'i.

Project Archaeologist/Report Writer, CRM TECH, Riverside/Colton, California.

Part-time Lecturer, San Diego State University, California.

Research Assistant for Dr. Lynn Gamble, San Diego State University.

Archaeological Collection Catalog, San Diego State University Foundation. "The Kumeyaay-Critical Awareness, Critical Activation," Salaam, San Diego College of Continuing Education.
"A Look at the Three Wise Men and Their Global Celebrations," The Epiphany Project.
"Voices: A Latina Advocate Shares about Life, Stereotypes, & Rising Above," Salaam online event.
"The Original Beach Town: San Diego's Coastal Heritage," San Diego Archaeological Center Living Room Lecture.

Society for California Archaeology; Society for Hawaiian Archaeology; California Native Plant Society.
16J5

PROJECT ARCHAEOLOGIST
Michael D. Richards, M.A., RPA (Registered Professional Archaeologist) Education
2002 M.A., Anthropology, California State University, Northridge (CSUN). 1986 B.A., Anthropology: University of California, Los Angeles (UCLA). 1982 A.A., Los Angeles Valley College, Los Angeles, California. 2015 Section 106 workshop.
2000 CSUN "Olmec" field excavation and lab analysis; La Venta, Mexico. 1999 Rock art recording, UCLA Extension; Little Lake, California. 1998 Rock art symposium, UCLA Extension.

Professional Experience
2018- Project Archaeologist/Paleontologist, CRM TECH, Colton, Calif. 2016-2018 Co -Principal Investigator/Archaeologist, LSA Associates Inc. 2012-2016 Co -Principal Investigator/Archaeologist, ICF International (Jones & Stokes). 2010-2012 Co -Principal Investigator/Archaeologist, various CRM firms (on call). 2007-2010 Principal Investigator/Field Director/Crew Chief, ASM Affiliates, Inc. 2004-2007 Project Manager/Co-Principal Investigator, ArchaeoPaleo Resource Management, Inc. 2003-2004 Staff Archaeologist/Crew Chief, SRI, Inc.
2000-2003 Project Archaeologist/Field Director, Ancient Enterprises (Clewlow, Jr.). 1999-2000 Staff Archaeologist/Lab Crew Chief, CSC/Edwards Air Force Base.

Research Interests
Pottery and rock art analysis; prehistory the American southwest; Mesoamerica; Japan.

Cultural Resources Management Reports
Author and co-author of, contributor to, and principal investigator for numerous cultural resources management study reports since 1999.

Memberships
Society for American Archaeology; Society for California Archaeology; Archaeological Institute of America; Conejo Open Space Trails Advisory Committee; Conejo Valley Historical Society. 166

APPENDIX 2

NATIVE AMERICAN INPUT
167

CI IAIRr RSCh
Reginald Poipbling
hur 1, vsi,
VICE-Cll dppEF^ _,r I
Bully Mc Quillen
1yc v•ar,u, r[isl,
Norr+6akl To Whom 41 May Concern:

STATE OF CALIFORNIA Gavin Newsom.szavemor

NATIVE AMERICAN HERITAGE COMMISSION
February 3, 2025
Nina Galiardo

CRM TECH
Via Email to: ngollardoe'crmfech.us
Re: Proposed Howard World Wildlife Museum Project, Riverside County SECRn'. RY
Barn Dutsehke
PART OMEN .IARIAN
Wayne Nelson
i,tiisenc
C.:onf .L ::i• •iI k'
tsare Bojorquez
& rttr�ne-Ca;tono�-�n
COMAAG it,NFR
Stanley Rodriguez
Kum er 1F�v
C_+!viMI` I! r.IER
Lauren° Bolden
J rrnrlo
CONNv85IC'rl ER
Reid Mllanovich
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CC_YF/yCILS NEF
Benno Calac
PPaurnc- 17ncBandof
LUise?o lrl. ans
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$EFLT A44 '4
Steven Quinn

NAHC HEADQUARTERS
1 SS0 Harbor Boulevard
Suite 100
west Sncromenta,
Caltointo Y.5611
19161373-3710
laahccenahc.cq,gQv
As requested, a record search of the Native American Heritage Commission (NAHC) Sacred Lands Fife (SLF) was completed based on information 5ubmifted tor the above referenced project. The results were neaatwve. Please note that tribes do not always record their sacred sites in the SLF, nor are they required to do so. As such, a SLF search is not a substitute for consultation with all tribes that are traditionally and culturally affiliated with a project's geographic area.

Attached is a list of Native American tribes who may also have knowledge of cultural resources in the project area_ This Ilst should provide a starting place in locating areas of potential adverse impact within the proposed project area. Please contact all of those listed; if they cannot supply information, they may recommend others with specific knowledge. If within two weeks of notification, a response has not been received, the Commission requests that you foliow=up with a telephone call or email to ensure that the project information was received.

If you receive notification of a change of address or phone number from a tribe, please notify the NAHC so that we can assure that our lists contain current information.

In addition to engaging in tribal consultation, you should consult the appropriate regional Californics Historical Research Information System (CHRIS) archaeok>gicrfl Information Center to determine whether it has information regarding the presence of recorded archaeological sites within the project area.

It you have any questions or need additional Information, please contact me at Andrew.GreenAnanc.ca. iov.

Sincerely,
Andrew Green
Cultural Resources Analyst
Attachment
Page Tof1
16��8

2/3/2025
Tribe Name Fed (F) Contact Person Contact Address Phone # Fax # Email Addre Non -Fed (N)
Agua Caliente Band of
Cahuilla Indians
F
Lacy Padilla, Director of Historic
Preservation/THPO
5401 Dinah Shore Drive
Palm Springs, CA, 92264
(760) 333-5222
(760) 699-6919

ACBCI-THP(
Augustine Band of
Cahuilla Indians
F
Tribal Operations,
84-001 Avenue 54
Coachella, CA, 92236
(760) 398-4722
info@august)
Cabazon Band of
Cahuilla Indians
F
Doug Welmas, Chairperson
84-245 Indio Springs Parkway
Indio, CA, 92203
(760) 342-2593
(760) 347-7880
jstapp@caba
Cahuilla Band of
Indians
F
Erica Schenk, Chairperson
52701 CA Highway 371
Anza, CA, 92539
(951) 590-0942
(951) 763-2808
chair@cahuil
Cahuilla Band of
Indians
F
BobbyRay Esparza, Cultural
Director
52701 CA Highway 371
Anza, CA, 92539
(951) 763-5549
besparza@c
Cahuilla Band of
Indians
F
Anthony Madrigal, THPO
52701 CA Highway 371
Anza, CA, 92539
(951) 763-5549
anthonymad:

Los Coyotes Band of
Cahuilla and Cupeno
Indians
F
Ray Chapparosa, Chairperson
P.O. Box 189
Warner Springs, CA, 92086-0189
(760) 782-0711
(760) 782-0712
Morongo Band of
Mission Indians
F
Ann Brierty, THPO
12700 Pumarra Road
Banning, CA, 92220
(951) 755-5259
(951) 572-6004
abrierty@mo
Morongo Band of
Mission Indians
F
Robert Martin, Chairperson
12700 Pumarra Road
Banning, CA, 92220
(951) 755-5110
(951) 755-5177
abrierty@mo
Quechan Indian Tribe
of the Fort Yuma
Reservation
F
Jordan Joaquin, President,
Quechan Tribal Council
P.O. Box 1899
Yuma, AZ, 85366-1899
(760) 919-3600
executivesec
Quechan Indian Tribe
of the Fort Yuma
Reservation
F
Jill McCormick, Historic
Preservation Officer
P.O. Box 1899
Yuma, AZ, 85366-1899
(928) 261-0254
historicprese
Ramona Band of
Cahuilla
F
John Gomez, Environmental
Coordinator
P. O. Box 391670
Anza, CA, 92539
(951) 763-4105
(951) 763-4325
jgomez@rann
Ramona Band of
Cahuilla
F
Joseph Hamilton, Chairperson
P.O. Box 391670
Anza, CA, 92539
(951) 763-4105
(951) 763-4325
admin@rams
Santa Rosa Band of
Cahuilla Indians
F
Vanessa Minott, Tribal
Administrator
P.O. Box 391820
Anza, CA, 92539
(951) 659-2700
(951) 659-2228
vminott@san
Santa Rosa Band of
Cahuilla Indians
F
Steven Estrada, Tribal Chairman
P.O. Box 391820
Anza, CA, 92539
(951) 659-2700
(951) 659-2228
sestrada@se
Soboba Band of
Luiseno Indians
F
Jessica Valdez, Cultural
Resource Specialist
P.O. Box 487
San Jacinto, CA, 92581
(951) 663-6261
(951) 654-4198
jvaldez@sob
Soboba Band of
Luiseno Indians
F
Joseph Ontiveros, THPO
P.O. Box 487
San Jacinto, CA, 92581
(951) 663-5279
(951) 654-4198
jntiveros@s
Torres -Martinez Desert
Cahuilla Indians
F
Alesia Reed, Cultural Committee
Chairwoman
P.O. Box 1160
Thermal, CA, 92274
(760) 397-0300
lisareed990c
Torres -Martinez Desert
Cahuilla Indians
F
Gary Resvaloso, TM MLD
P.O. Box 1160
Thermal, CA, 92274
(760) 777-0365
grestmtm@g
Torres -Martinez Desert
Cahuilla Indians
F
Thomas Tortez, Chairperson
P.O. Box 1160
Thermal, CA, 92274
(760) 397-0300
(760) 397-8146
thomas.torte:

Torres -Martinez Desert
Cahuilla Indians
F
Abraham Becerra, Cultural
Coordinator
P.O. Box 1160
Thermal, CA, 92274
(760) 397-0300
abecerra@tn
Torres -Martinez Desert
Cahuilla Indians
F
Mary Belardo, Cultural Committee P.O. Box 1160
Vice Chair 1 aQ rmal, CA, 92274
(760) 397-0300
belardom@g
This list is current only as of the date of this document. Distribution of tMs`ItSt not relieve any person of statutory responsibility as defined in Section 7050.5 of the Resources Code and Section 5097.98 of the Public Resources Code.

AGUE CALIENTE BAND QF CAHUO LA INDIANS
t oieHML HIS 10I.4C Pn_s.F R3vkr,10,
February 14, 2025
[VIA EMAIL TO: [email protected]]

CRM TECH
Eulices Lopez
1016 E. Cooley Drive, Ste. A/B
Colton, CA Y92324

43.008-2025-001
Re Information Regarding the Project Area and participation in the Proposed Howard World Wildlife Museum Project, in the City of Rancho Mirage (CRM TECH No. 4233) D ear Euli ces Lopez,
The Agua Caliente Band of Cahuilla Indians (ACBCI) appreciates your efforts to include the Tribal Historic Preservation Office (TI-LPO) in the Howard World Wildlife Museum project. The project area is not located within the boundaries of the ACBCI Reservation. However, it is within the Tribe's Traditional Use Area. For this reason, the ACBCI THPO requests the following:
*A copy of the records search with associated survey reports and site records from the information center.
*Copies of any cultural resource documentation (report and site records) generated in connection with this project.
*The presence of an approved Agua Caliente Native American Cultural Resource Monitor(s) during any ground disturbing activities (including archaeological testing and surveys). Should buried cultural deposits be encountered, the Monitor may request that destructive construction halt and the Monitor shall notify a Qialified Archaeologist (Secretary of the Interior's Standards and Guidelines) to investigate and, if necessary, prepare a mitigation plan for submission to the State Historic Preservation Officer and the Agua Caliente Tribal Historic Preservation Office.

Again, the Agua Caliente appreciates your interest in our cultural heritage. If you have questions or require additional information, please call me -at (760) 883-1137. You may also email me at ACB [email protected].

Cordially,
1760

AGUA CALIENTE BAND OF CAHUILLA INDIANS
TfH9AL HIs1ufli PRFSFRV.TifN
Luz Salazar
Cultural Resources Analyst
Tribal Historic Presentation Office

AGUA CALIENTE BAND

OF CAHUILLA INDIANS
S4(3P I)Ih4hrl MAIM Srr9INr . CA 0.22t3Q
WwV .n, nI n. r.,.IiLkAtt MjI t'.ryW
1761

APPENDIX 3

CALIFORNIA HISTORICAL RESOURCES INVENTORY

SITE RECORD FORMS
(Chart House Restaurant, 69-934 Highway 111)
172

State of California —The Resources Agency

DEPARTMENT OF PARKS AND RECREATION

PRIMARY RECORD
Primary #
HRI #
Trinomial
NRHP Status Code
Other Listings
Review Code Reviewer Date

P1. Other Identifier:
*P2. Location: ❑Not for Publication •Unrestricted *a. County Riverside *b. USGS 7.5' Quad Date:
*c. Address 69-934 Highway 111 City Rancho Mirage
*e. Other Locational Data: Assessor's Parcel Number Block: Lot:

Resource name(s) or number (assigned by recorder) Chart House Restaurant Zip 92270
*P3a. Description: (Describe resource and its major elements. Include design, materials, condition, alterations, size, setting, and boundaries.) Situated at the foot of a small hill along Highway 111, the arrestingly designed Chart House restaurant follows the natural curvature of the site. The hill appears to slope down through the one-story, southwest -facing, Organic Modern building designed by architect Ken Kellogg in 1978. There is 9,296 square feet covered by the roof. Gently sloping roof, with four inches of urethane foam, the roof undulates around the perimeter of the hill, resting on recycled roof boards that are supported by laminated curved beams.

Fixed windows are mostly clerestory and opaque with black anodized aluminum mullions. The center skylight is made of three layers of translucent plastic running the full length of the restaurant. The skylight culminates in a raised, ribbed dome from which a round natural rock chimney emerges. The rock in the subterranean walls and the chimney was quarried on site. The double doors of the recessed entrance are made of laminated beveled glass in curved wood frames for keeping out the summer heat. A low - profile waterfall of about 20 feet runs in and out through the glass on the east side of the entrance. Low concrete walls form planters on either side. A curved concrete walkway leads from the parking lot which, together with the restaurant, is on 5.48 acres of land. Landscaping consists of a front lawn, gravel, cacti, shrubs, and queen palms. Although the interior has been extensively remodeled, the exterior is original and in excellent condition. *P3b. Resource Attributes: (list attributes and codes) HP6. 1-3 story commercial building *P4. Resources Present: •Building ❑Structure ❑Object ❑Site ❑District ❑Element of District ❑Other P5b. Description of Photo: (view
and date)
Southwest elevation
August 2002
*P6. Date Constructed/Age and
Sources: ■historic
1978/ Source: City of Rancho Mirage
Buiilding Permits
*P7. Owner and Address:

Wessman Holdings LLC
1555 South Palm Canyon Drive #G-
10 Palm Springs, CA 92264
*P8. Recorded by:

P. Moruzzi, T. Grimes, L. Heumann
Leslie Heumann and Associates
600 N. Sierra Bonita Ave.

Los Angeles, CA 90036
*P9. Date Recorded:

September 23, 2002
*P10. Survey Type:

Intensive Survey .
*P11. Report Citation: (Cite survey report and other sources, or enter "none") None.
*Attachments: ❑None ❑Location Map ❑Sketch Map •Continuation Sheet •Building, Structure, and Object Record ❑Archaeological Record ❑District Record ❑Linear Feature Record ❑Milling Station Record ❑Rock Art Record ❑Artifact Record ❑Photograph Record ❑ Other (list)
DPR 523A (1/95)
1703
*Required information

State of California —The Resources Agency Primary #
DEPARTMENT OF PARKS AND RECREATION HRI#

BUILDING, STRUCTURE, AND OBJECT RECORD

*NRHP Status Code 3S
*Resource Name or #: Chart House Restaurant
B1. Historic Name: Chart House Restaurant
B2. Common Name: Same
B3. Original Use: Restaurant
*B5. Architectural Style: Organic Modern
*B6. Construction History: (Construction date, alterations, and date of alterations):

June 6, 1978. Restaurant. Value: $317,320.

July 25, 1985. Monument sign.

March 23, 1998. Interior strip out of finishes including carpet, wood booths, fixtures, pavers, adobe tile, etc.

B4. Present Use: Restaurant
*B7. Moved? ■No ❑Yes ❑Unknown Date: Original Location:
*B8. Related Features:

None.

B9a. Architect: Kendrick Bangs Kellogg b. Builder: Wessman Construction Company *B10. Significance: Theme Cityhood Area Rancho Mirage
Period of Significance: 1973 - Present Property Type: Single-family Residence Applicable Criteria: C (Discuss importance in terms of historical or architectural context as defined by theme, period, and geographic scope. Also address integrity) The Chart House is architecturally significant as a unique and outstanding example of "Organic Modern" design, sensitively integrated into its site and responsive to the desert climate. Designed by architect Kendrick Bangs Kellogg, it was built in 1978 and appeared on the cover of Restaurant Design magazine in 1981. In 1994, it received the Vintage Pinot Noir Award sponsored by AIA, APA, ASLA, AEP, CSPE, IEDI of the Inland Empire of California, in large part due to its energy efficiency.

Kellogg attended university at San Diego State, University of Colorado, University of Southern California, and the University of California at Berkeley. He received an architect's license in California in 1964 and a building contractor's license in 1966, a national license in 1979, and a global (international) license in 1998. Kellogg's motto is: "the more unusual the site, the better the Architecture."
(See Continuation Sheet 3 of 3.)
B11. Additional Resource Attributes: (List attributes and codes) *B12. References:

Alan Hess and Andrew Danish, Palm Springs Weekend, Chronicle Books, 2001.

Kendrick Bangs Kellogg website. http.//sandiegoart.com/KKellogg/restps.html City of Rancho Mirage Building Permits.

B13. Remarks:
*B14. Evaluator: Peter Moruzzi, Teresa Grimes, Leslie Neumann *Date of Evaluation: September 23, 2002
(This space reserved for official comments.)
Sketch Map
DPR 523B (1/95)
1704
*Required information

State of California —The Resources Agency

DEPARTMENT OF PARKS AND RECREATION

CONTINUATION SHEET
Primary #
HRI #
Trinomial

*Recorded by P. Moruzzi, T. Grimes, L. Heumann *Date September 23, 2002 I Continuation ❑ Update *B10. Significance (continued):

Kellogg's diversified experience emphasizes composing a totally unified concept. He has a rather unorthodox philosophy regarding architecture and the profession. "Although the `architectural school' taught basic engineering, it also inadvertently taught me what not to do. Architecture cannot be taught. Beauty comes from within. I learned early that license does not make Architecture. Competitions are, for the most part, political. The technology of any time is only a tool. The AIA is composed of those, with and without license, who primarily are in the business of promoting themselves rather than Architecture. And a committee will never be composed of anything more than another level of mediocrity." Kellogg believes "Organic Architecture is the Mother of the Arts. Beauty is the sustainable essence of life. Nature is not sentimental. Both beauty and nature are the practical aspects of our compassion for survival." The Chart House, Kellogg's only known Coachella Valley commission, brilliantly demonstrates Kellogg's design philosophy.

Here he created a building that is an integral and `organic' part of the environment as it grows out of the hill. Hugging the land, the partially subterranean building folds, curves, and undulates with the topography. It is clearly one -of -a -kind. The property appears eligible for separate listing in the National Register of Historic Places under Criterion C for exceptional merit as an example of Organic Modern design (a "3S" National Register Status Code). In addition, the property would be eligible for designation under an existing or proposed local ordinance.

P5b. Description/Date of Photo: View from beneath entrance overhang, August 2002.

DPR 523L
1705

State of California --The Resources Agency

DEPARTMENT OF PARKS AND RECREATION

CONTINUATION SHEET
Primary # _
HRI #
Trinomial

Resource name or # (Assigned by recorder) Chart House
Recorded by Michael D. Richards Date March 18, 2025
Form Prepared by Bai "Tom" Tang
Affiliation: CRM TECH, Colton
Date April 10, 2025
Continuation A/ Update
Project No: CRM TECH 4233
In 2004, the Chart House building was officially designated a local historic resource by the City of Rancho Mirage. Chart House itself closed prior to that, in 2003, and a series of other restaurants continued to operate at the same location until January 10, 2012, when a fire destroyed much of the building. After the fire, further studies were commissioned by the City to explore possible means to avoid or reduce impact on the significance of this historic building, such as restoration, reconstruction, or mitigation, and much public discussion ensued in the City's decision -making process.

Ultimately, the City concluded that it was infeasible for the building to be restored and that, under the circumstances, the issuance of a demolition permit was a ministerial act exempt from provisions of the California Environmental Quality Act (CEQA). The former Chart House building was subsequently demolished on March 19, 2013. A field inspection of its former site on March 18, 2025, confirmed that the building had been completely removed, leaving little physical trace of its 35 - year presence except the paved parking lot nearby, which remains in occasional use by shoppers at the adjacent Atrium shopping center.

Report Citation:

Bai "Tom" Tang, Frank Raslich, Daniel Ballester, and Michael D. Richards 2025 Phase I Historical/Archaeological Resources Survey: Howard World Wildlife Museum Project; Assessor's Parcel Nos. 689-040-023, -025, and -028, City of Rancho Mirage, Riverside County, California.

Additional References:

City of Rancho Mirage
2012 Environmental Initial Study: Proposed Demolition of Fire -Damaged Structure Commonly Known as the Chart House Restaurant (Case No. EA120004); draft. Copy provided by the City of Rancho Mirage.
2013a City Council, Library Board, Housing Authority Board, the City Council Representing the Redevelopment Successor Agency and the Community Facilities District, Regular Meeting, Thursday, January 17, 2013, 1:00 P.M., Minutes. Copy provided by the City of Rancho Mirage.
2013b City Council, Library Board, Housing Authority Board, the City Council Representing the Redevelopment Successor Agency, Regular Meeting, Thursday, February 7, 2013, 1:00 P.M., Minutes. Copy provided by the City of Rancho Mirage
2013c City Council Resolution No. 2013-07. Copy provided by the City of Rancho Mirage.

Herzog, Blake
2013 Chart House Building's Demise: "It Was a Work of Art." The Desert Sun (Palm Springs, California) March 20:A1, A7.

Herzog, Blake, and Colin Atagi
2013 Iconic Building to Be Leveled. The Desert Sun (Palm Springs, California) February 8:B1, B2.

DPR 523L (1/95) *Required information
1706

State of California --The Resources Agency

DEPARTMENT OF PARKS AND RECREATION

CONTINUATION SHEET
Primary # _
HRI #
Trinomial

Resource name or # (Assigned by recorder) Chart House
Recorded by Michael D. Richards Date March 18, 2025
Form Prepared by Bai "Tom" Tang
Affiliation: CRM TECH, Colton
Date April 10, 2025
Continuation A/ Update
Project No: CRM TECH 4233
McGinty, Kate, and Brian Indrelunas
2012 Fire Destroys Local Landmark. The Desert Sun (Palm Springs, California) January 11:A1, A2.

Tang, Bai "Tom"
2012 Historic Building Study: Former Chart House, 69-934 Highway 111, City of Rancho Mirage, Riverside County, California. Report prepared for Terra Nova Planning and Research, Inc., by CRM TECH.

DPR 523L (1/95) *Required information
1707

GLOBAL WILDLIFE DISCOVERY MUSEUM
Initial Study/Mitigated Negative Declaration
August 2025
Appendix D
AB 52 Consultation Initiation Letter
City of Rancho Mirage D
1708

CITY of PJINC o MIR14GC
May 19, 2025
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear :

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at LezleeP ranchomirageca.gov or at the following address within 30 days from the receipt of this letter.

Sincerely,
Zoieee Pag
Lezlee Perez
Assistant Planner
1709

CITY of PJINC o MIR14GC
May 19, 2025
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear :

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at LezleeP ranchomirageca.gov or at the following address within 30 days from the receipt of this letter.

Sincerely,
Zoieee Pag
Lezlee Perez
Assistant Planner
1710

CITY of PJINC o MIR14GC
May 19, 2025
Tribe Name
Contact Person
Contact Address
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Contact Person:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at LezleeP(cc7ranchomirageca.gov or at the following address within 30 days from the receipt of this letter.

Sincerely,
4eiieee Pzel
Lezlee Perez
Assistant Planner
1711

CITY of PJINC o MIR14GC
May 19, 2025
Agua Caliente Band of Cahuilla Indians
Lacy Padilla, Director of Historic Preservation/THPO
5401 Dinah Shore Drive
Palm Springs, CA, 92264
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. Padilla:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Zgeee
Lezlee Perez
Assistant Planner
1712

CITY of PJINC o MIR14GC
May 19, 2025
Augustine Band of Cahuilla Indians
Tribal Operations,
84-001 Avenue 54
Coachella, CA, 92236
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Tribal Operations:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1713

CITY of PJINC o MIR14GC
May 19, 2025
Cabazon Band of Cahuilla Indians
Doug Welmas, Chairperson
84-245 Indio Springs Parkway
Indio, CA, 92203
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Welmas:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1714

CITY of PJINC o MIR14GC
May 19, 2025
Cahuilla Band of Indians
Anthony Madrigal, Tribal Historic Preservation Officer
52701 CA Highway 371
Anza, CA, 92539
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Madrigal:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1715

CITY of PJINC o MIR14GC
May 19, 2025
Cahuilla Band of Indians
BobbyRay Esparza, Cultural Director
52701 CA Highway 371
Anza, CA, 92539
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Esparza:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1716

CITY of PJINC o MIR14GC
May 19, 2025
Cahuilla Band of Indians
Erica Schenk, Chairperson
52701 CA Highway 371
Anza, CA, 92539
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. Schenk:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1717

CITY of PJINC o MIR14GC
May 19, 2025
Los Coyotes Band of Cahuilla and Cupeno Indians
Ray Chapparosa, Chairperson
P.O. Box 189
Warner Springs, CA, 92086-0189
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Chapparosa:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1718

CITY of PJINC o MIR14GC
May 19, 2025
Morongo Band of Mission Indians
Robert Martin, Chairperson
12700 Pumarra Road
Banning, CA, 92220
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Martin:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1719

CITY of PJINC o MIR14GC
May 19, 2025
Morongo Band of Mission Indians
Ann Brierty, THPO
12700 Pumarra Road
Banning, CA, 92220
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. Brierty:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1720

CITY of PJINC o MIR14GC
May 19, 2025
Quechan Indian Tribe of the Fort Yuma Reservation
Jordan Joaquin, President, Quechan Tribal Council
P.O.Box 1899
Yuma, AZ, 85366-1899
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Joaquin:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1721

CITY of PJINC o MIR14GC
May 19, 2025
Quechan Indian Tribe of the Fort Yuma Reservation
Jill McCormick, Historic Preservation Officer
P.O. Box 1899
Yuma, AZ, 85366-1899
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. McCormick:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1722

CITY of PJINC o MIR14GC
May 19, 2025
Ramona Band of Cahuilla
Joseph Hamilton, Chairperson
P.O. Box 391670
Anza, CA, 92539
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Hamilton:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1723

CITY of PJINC o MIR14GC
May 19, 2025
Santa Rosa Band of Cahuilla Indians
Steven Estrada, Tribal Chairman
P.O. Box 391820
Anza, CA, 92539
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Estrada:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1724

CITY of PJINC o MIR14GC
May 19, 2025
Santa Rosa Band of Cahuilla Indians
Vanessa Minott, Tribal Administrator
P.O. Box 391820
Anza, CA, 92539
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. Minott:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Zgeee
Lezlee Perez
Assistant Planner
1725

CITY of PJINC o MIR14GC
May 19, 2025
Soboba Band of Luiseno Indians
Jessica Valdez, Cultural Resource Specialist
P.O. Box 487
San Jacinto, CA, 92581
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. Valdez:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1726

CITY of PJINC o MIR14GC
May 19, 2025
Soboba Band of Luiseno Indians
Joseph Ontiveros, Tribal Historic Preservation Officer
P.O. Box 487
San Jacinto, CA, 92581
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Ontiveros:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1727

CITY of PJINC o MIR14GC
May 19, 2025
Torres -Martinez Desert Cahuilla Indians
Mary Belardo, Cultural Committee Vice Chair
P.O. Box 1160
Thermal, CA, 92274
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. Belardo:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1728

CITY of PJINC o MIR14GC
May 19, 2025
Torres -Martinez Desert Cahuilla Indians
Thomas Tortez, Chairperson
P.O. Box 1160
Thermal, CA, 92274
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Tortez:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1729

CITY of PJINC o MIR14GC
May 19, 2025
Torres -Martinez Desert Cahuilla Indians
Alesia Reed, Cultural Committee Chairwoman
P.O. Box 1160
Thermal, CA, 92274
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Ms. Reed:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1730

CITY of PJINC o MIR14GC
May 19, 2025
Torres -Martinez Desert Cahuilla Indians
Gary Resvaloso, TM MLD
P.O. Box 1160
Thermal, CA, 92274
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Resvaloso:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1731

CITY of PJINC o MIR14GC
May 19, 2025
Torres -Martinez Desert Cahuilla Indians
Abraham Becerra, Cultural Coordinator
P.O. Box 1160
Thermal, CA, 92274
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear Mr. Becerra:

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at [email protected] or at the following address within 30 days from the receipt of this letter.

Sincerely,
Lezlee Perez
Assistant Planner
1732

CITY of PJINC o MIR14GC
May 19, 2025
RE: Environmental Assessment Case No. EA25-0003 and Preliminary Development Plan Case No. PDP25-0003 for the World Wildlife Museum at 69934 Highway 111 (APNs:
689-040-023, -025, & 028)
Dear :

In conformance with Assembly Bill 52 (AB 52), we are sending you this letter to offer consultation to protect cultural resources that may occur within the City per your request. The project being considered is as follows:

The World Wildlife Museum project proposes the development of a new single -story museum located adjacent to a mountain. The project consists of three separate parcels that will be merged into one parcel, totaling 6.75 acres. The building will be approximately 22,000 square feet in size.

Various site improvements are proposed which include approximately 104 parking stalls, a bus drop off area/parking, perimeter landscaping, and other improvements. Enclosed is Attachment 1 — Site Plan for your reference.

If you wish to consult with the City regarding potential cultural resources within the City, or the AB 52 process, please contact me at 760-328-2266 or via email at LezleeP ranchomirageca.gov or at the following address within 30 days from the receipt of this letter.

Sincerely,
Zoieee Pag
Lezlee Perez
Assistant Planner
1733

CITY of PJINC 0 MIR14GC
1734

GLOBAL WILDLIFE DISCOVERY MUSEUM
Initial Study/Mitigated Negative Declaration
August 2025
Appendix E
Geotechnical Investigation
City of Rancho Mirage E
1735

Sladden
Engineering

GEOTECHNICAL INVESTIGATION

PROPOSED HOWARD WORLD WILDLIFE MUSEUM
NEC MIRAGE COVE DRIVE AND HIGHWAY 111

CITY OF RANCHO MIRAGE, CALIFORNIA
-Prepared By-
Sladden Engineering
45090 Golf Center Parkway, Suite F
Indio, California 92201
(760) 863-0713
1736
Sladden Engineering
www.SladdenEngineering.com

Sladden Engineering
45090 Golf Center Parkway, Suite F, Indio, California 92201 (760) 863-0713 Fax (760) 863-0847 6782 Stanton Avenue, Suite C, Buena Park, CA 90621 (714) 523-0952 Fax (714) 523-1369 450 Egan Avenue, Beaumont, CA 92223 (951) 845-7743 Fax (951) 845-8863 www.sladdenengineering.com
March 31, 2025 Project No. 544-25009
25-03-126
Robert S. Howard Foundation
Attn. Cindy Finerty
74900 Highway 111, Suite #120
Indian Wells, California 92210
Subject: Geotechnical Investigation
Project: Proposed Howard World Wildlife Museum
NEC Mirage Cove Drive and Highway 111
City of Rancho Mirage, California
Sladden Engineering is pleased to present the results of the geotechnical investigation performed for the Howard World Wildlife Museum proposed for the property (APN 689-040-023) located on the northeast corner of Mirage Cove Drive and Highway 111 in the City of Rancho Mirage, California. Our services were completed in accordance with our revised proposal for geotechnical engineering services dated January 21, 2025 and your authorization to proceed with the work. The purpose of our investigation was to explore the subsurface conditions at the site to provide recommendations for foundation design and the design of the various site improvements. Evaluation of environmental issues and hazardous wastes was not included within the scope of services provided.

The opinions, recommendations and design criteria presented in this report are based on our field exploration program, laboratory testing and engineering analyses. Based on the results of our investigation, it is our professional opinion that the proposed project should be feasible from a geotechnical perspective provided that the recommendations presented in this report are implemented in design and carried out through construction.

We appreciate the opportunity to provide service to you on this project. If you have any questions regarding this report, please contact the undersigned.

Respectfully submitted,

SLADDEN ENGINEERING
James W. Minor III Brett L. Anderson
Principal Geologist Principal Engineer
SER/jm
Copies: PDF/Addressee
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Sladden Engineering
www.SladdenEngineering.com

GEOTECHNICAL INVESTIGATION

PROPOSED HOWARD WORLD WILDLIFE MUSEUM
NEC MIRAGE COVE DRIVE AND HIGHWAY 111

CITY OF RANCHO MIRAGE, CALIFORNIA
INTRODUCTION 1
PROJECT DESCRIPTION 2
SCOPE OF SERVICES 2
SITE CONDITIONS 3
GEOLOGIC SETTING 3
SUBSURFACE CONDITIONS 4
GROUNDWATER CONDITIONS 6
SEISMICITY AND FAULTING 6
GROUND MOTION PARAMETERS 7
GEOLOGIC HAZARDS 7
CONCLUSIONS 9
EARTHWORK AND GRADING 10
Site Clearing 10
Preparation of Building Areas 10
Cut/Fill Slopes 10
Compaction 11
Shrinkage and Subsidence 11
CONVENTIONAL SHALLOW SPREAD FOOTINGS 12
SLABS -ON -GRADE 12
RETAINING WALLS 13
CORROSION SERIES 13
UTILITY TRENCH BACKFILL 14
EXTERIOR CONCRETE FLATWORK 14
PAVEMENT DESIGN 14
DRAINAGE 14
LIMITATIONS 15
ADDITIONAL SERVICES 15
REFERENCES 16

PLATES -
Site Location Map
Regional Geologic Map
Borehole Location Plan
APPENDIX A Field Exploration
APPENDIX B Laboratory Testing
APPENDIX C Seismic Design Map and Report
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INTRODUCTION
This report presents the results of the geotechnical investigation performed by Sladden Engineering (Sladden) for the Howard World Wildlife Museum proposed for the property (APN 689-040-023) located on the northeast corner of Mirage Cove Drive and Highway 111 in the City of Rancho Mirage, California.

The site is located at approximately 33.7662 degrees north latitude and 116.4439 degrees west longitude.

The approximate location of the site is indicated on the Site Location Map (Figure 1).

Figure 1 (USGS, 2012)
Our investigation was conducted to evaluate the engineering properties of the subsurface materials, to evaluate their in -situ characteristics, and to provide engineering recommendations and design criteria for site preparation, foundation design and the design of various site improvements. This study also includes a review of published and unpublished geotechnical and geological literature regarding seismicity and other geologic hazards at and near the subject site.
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PROJECT DESCRIPTION
Based on the provided plans (Prest Vuksic, 2024), the project will consist of constructing a new single - story museum with a plaza/fountain area. Underground utilities, a billboard sign, paved parking areas, concrete flatwork, landscape areas, and various associated improvements are also anticipated. For our analyses, we expect that the new museum will consist of a relatively lightweight wood -frame or steel - frame structure supported on conventional shallow spread footings and concrete slabs on grade.

Sladden expects that grading will be limited to minor cuts and fills to accomplish the desired surface elevations and provide adequate gradients for site drainage. This does not include the removal and re - compaction of the loose surface soil/bedrock and primary foundation -bearing soil within the proposed building and foundation areas. Upon completion of the precise grading plans, Sladden should be retained to verify that the recommendations presented within this report are properly incorporated into the design of the proposed project
Structural foundation loads were not available at the time of this report. Based on our experience with relatively lightweight structures, we expect that isolated column loads will be less than 20 kips and continuous wall loads will be less than 2.0 kips per linear foot. If these actual loads vary significantly from the assumed loads, we should be consulted to verify the applicability of the recommendations provided.

SCOPE OF SERVICES
The purpose of our investigation was to determine specific engineering characteristics of the surface and near -surface soil to develop foundation design criteria and recommendations for site preparation.

Specifically, our site characterization consisted of the following tasks:
• Site reconnaissance to assess the existing surface conditions on and adjacent to the site. • Drilling three (3) exploratory boreholes to depths ranging from approximately 5 to 21.5 feet bgs to characterize the subsurface soil conditions. Representative samples of the soil were classified in the field and retained for laboratory testing and engineering analyses. • Performing laboratory testing on selected samples to evaluate their engineering characteristics. • Reviewing geologic literature and discussing geologic hazards. • Performing site -specific ground motion procedures for the subject property. • Performing engineering analyses to develop recommendations for foundation design and site preparation.
• The preparation of this report summarizing our work at the site. 1740
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SITE CONDITIONS
The subject property is located on the northeast corner of Mirage Cove Drive and Highway 111 in the City of Rancho Mirage, California. The new museum location is formally identified by the County of Riverside as APN 689-040-023 and occupies a total area of 0.93 acres. At the time of our investigation, the property was vacant. An existing paved parking lot was located near the northern side of the parcel. An ascending bedrock hillside was located on the eastern side of the parcel. The proposed building location is near the elevation of the adjacent properties and roadways and is bounded by residential and commercial property to the north, residential property to the east, Mirage Cove Drive to the south, and Highway 111 to the west.

Based on our review of the Cathedral City 7.5 -Minute Quadrangle Map (USGS, 2021) and (Google Earth, 2025), the site is situated at an approximate elevation of 265 feet above mean sea level (MSL).

No natural ponding of water or surface seeps were observed at or near the sites during our investigation conducted on February 6, 2025. Site drainage is controlled by sheet flow, surface infiltration and through City maintained storm sewers located along nearby streets.

GEOLOGIC SETTING
The project site is located within the Colorado Desert Physiographic Province (also referred to as the Salton Trough) which is characterized as a northwest -southeast trending structural depression extending from the Gulf of California to the Banning Pass. The Salton Trough is dominated by several northwest - trending faults, most notably the San Andreas Fault system. The Salton Trough is bounded by the Santa Rosa -San Jacinto Mountains on the southwest, the San Bernardino Mountains on the north, the Little San Bernardino - Chocolate - Orocopia Mountains on the east, and extends through the Imperial Valley into the Gulf of California on the south.

A relatively thick sequence (20,000 feet) of sediment has been deposited in the Coachella Valley portion of the Salton Trough from Miocene to present times. These sediments are predominately terrestrial in nature with some lacustrine (lake) and minor marine deposits. The major contributor of these sediments has been the Colorado River. The mountains surrounding the Coachella Valley are composed primarily of Precambrian metamorphic and Mesozoic "granitic" rock.

The Salton Trough is an internally draining area with no readily available outlet to Gulf of California and with portions well below sea level (-253' msl). The region is intermittently blocked from the Gulf of California by the damming effects of the Colorado River delta (current elevation +30'msl). Between about 300AD and 1600 AD (to 1700) the Salton Trough has been inundated by the River's water, forming ancient Lake Cahuilla (max. elevation +58' msl). Since that time the floor of the Trough has been repeatedly flooded with other "fresh" water lakes (1849, 1861, and 1891), the most recent and historically long-lived being the current Salton Sea (1905). The sole outlet for these waters is evaporation, leaving behind vast amounts of terrestrial sediment materials and evaporite minerals.

The site has been mapped by Rogers (1965) to be immediately underlain by Quaternary -age alluvium (Qal) to dune sand (Qs) and Pre -Cretaceous metasedimentary rocks (ms). The regional geologic setting for the site vicinity is presented on the Regional Geologic Map (Figure 2). 1741
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P_@Im
Qol
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Figure 2 (Rogers, 1965)

SUBSURFACE CONDITIONS
The subsurface conditions at the site were investigated by drilling three (3) exploratory boreholes and two (2) percolation test holes on the property to depths ranging from approximately 5 to 21 feet bgs. The approximate locations of the boreholes are illustrated on the Borehole Location Plan (Figure 3). The boreholes were advanced using a truck -mounted Mobile B-61 drill -rig equipped with 8 -inch outside diameter hollow stem augers. A representative of Sladden was on -site to log the materials encountered and retrieve samples for laboratory testing and engineering analysis. 1742
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During our field investigation, disturbed/fill soil was encountered to a depth of less than approximately three (3) feet below existing grade. Underlying the disturbed/fill soil, native alluvium overlying bedrock was encountered. The native alluvial soil throughout the site consists primarily of silty sand (SM), and sandy silt (ML). Generally, granular soil was found to be dry, medium dense, and grayish brown in in - situ color. Cohesive layers were found to be dry to slightly moist, medium stiff, dark grayish brown in in - situ color, and exhibited low plasticity characteristics. The encountered bedrock material consisted of a moderately hard, moderately strong, highly weathered metamorphite (ms) that breaks down into a SM/SP soil type.

The final logs represent our interpretation of the contents of the field logs, and the results of the laboratory observations and tests of the field samples. The final logs are included in Appendix A of this report. The stratification lines represent the approximate boundaries between soil types although the transitions may be gradual and variable across the site.

Figure 3 (Prest Vuksic, 2024)
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GROUNDWATER CONDITIONS
Groundwater was not encountered at the maximum explored depth of 21 feet bgs during our field investigation. Information regarding the approximate depth to groundwater provided by the California Department of Water Resources online database indicates that the depth to groundwater is in excess of 50 feet below the existing ground surface in the vicinity of the site (CDWR, 2025). It is our opinion that groundwater should not be a factor in the design or construction of the proposed project.

SEISMICITY AND FAULTING
The southwestern United States is a tectonically active and structurally complex region, dominated by northwest -trending dextral faults. The faults of the region are often part of complex fault systems, composed of numerous subparallel faults that splay or step from main fault traces. Strong seismic shaking could be produced by any of these faults during the design life of the proposed project.

We consider the most significant geologic hazard to the project to be the potential for moderate to strong seismic shaking that is likely to occur during the design life of the project. The proposed project is located in the highly seismic Southern California region within the influence of several fault systems that are considered to be active or potentially active. An active fault is defined by the State of California as a "sufficiently active and well-defined fault" that has exhibited surface displacement within the Holocene epoch (about the last 11,000 years). A potentially active fault is defined by the State as a fault with a history of movement within Pleistocene time (between 11,000 and 1.6 million years ago).

As previously stated, the site has been subjected to strong seismic shaking related to active faults that traverse through the region. Some of the more significant seismic events near the subject site within recent times include: M6.0 North Palm Springs (1986), M6.1 Joshua Tree (1992), M7.3 Landers (1992), M6.2 Big Bear (1992), M7.1 Hector Mine (1999), and M7.1 Ridgecrest (2019).

Table 2 lists the closest known potentially active faults that was generated in part using fault parameters from The Revised 2002 California Probabilistic Seismic Hazard Maps (Cao et al, 2003), 2008 National Seismic Hazard Maps — Source Parameters (USGS, 2008) and the Fault and Fold Database of the United States (USGS, 2024a). This table does not identify the probability of reactivation or the on -site effects from earthquakes occurring on any faults in the region.

TABLE 1

CLOSEST KNOWN ACTIVE FAULTS
Fault Name
Distance
(Km)
Maximum
Event
San Andreas - Coachella

13.3 *7.2
San Andreas - Southern

13.3 *7.2
San Andreas - San Bernardino

18.4 *7.5
Burnt Mountain

21.5 6.5
Eureka Peak

25.2 6.4
San Jacinto - Anza

29.6 7.2
San Jacinto - Coyote Creek

34.2 6.8
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GROUND MOTION PARAMETERS
Sladden has reviewed the 2022 California Building Code (CBC) and ASCE7-16 and developed ground motion parameters for the subject site. The project Seismic Design Maps are summarized in the following table and included within Appendix C. The project Structural Engineer should verify that all design parameters provided are applicable for the subject project.

TABLE 2

GROUND MOTION PARAMETERS
Latitude / Longitude

33.7662/ -116.4439
Risk Category
II
Site Class
C
Code Reference Documents
ASCE 7-16; Chapter 11 & 21
Description
Type
Map Based
MCER Ground Motion (0.2 second period)
Ss

1.5 MCER Ground Motion (1.0 second period)
Si

0.613
Site -Modified Spectral Acceleration Value
SMs

1.8 Site -Modified Spectral Acceleration Value
SM1

0.858
Numeric Seismic Design Value at 0.2 second SA
SDS

1.2 Numeric Seismic Design Value at 1.0 second SA
SD1

0.572
Site Am alification Factor at 0.2 second
Fa

1.2 Site Amplification Factor at 1.0 second
Fv

1.4 Site Peak Ground Acceleration
PGAM

0.788

GEOLOGIC HAZARDS
The subject site is located in an active seismic zone and will likely experience strong seismic shaking during the design life of the proposed project. In general, the intensity of ground shaking will depend on several factors including; the distance to the earthquake focus, the earthquake magnitude, the response characteristics of the underlying materials, and the quality and type of construction. Geologic hazards and their relationship to the site are discussed below.

I. Surface Rupture. Surface rupture is expected to occur along preexisting, known active fault traces. However, surface rupture could potentially splay or step from known active faults or rupture along unidentified traces. Based on our review of Rogers (1965), Jennings (1994), CGS (2025) and CDOC (2025) known active faults are not mapped on the site. In addition, no signs of active surface faulting were observed during our review of non -stereo digitized photographs of the site and site vicinity (Google Earth, 2025). Finally, no signs of active surface fault rupture or secondary seismic effects (lateral spreading, lurching etc.) were identified during our field investigation. Therefore, it is our opinion that risks associated with primary surface ground rupture should be considered "low". 1745
Sladden Engineering
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March 31, 2025
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]I. Ground Shaking. The site has been subjected to past ground shaking by faults that traverse through the region. Strong seismic shaking from nearby active faults is expected to produce strong seismic shaking during the design life of the proposed project. Based on site -specific ground motion parameters developed for the property (Appendix C), the site - modified peak ground acceleration (PGAm) is estimated to be 0.788g.

III. Liquefaction/Dry Sand Settlement. Liquefaction is the process in which loose, saturated granular soil loses strength as a result of cyclic loading. The strength loss is a result of a decrease in granular sand volume and a positive increase in pore pressures. Generally, liquefaction can occur if all of the following conditions apply; liquefaction -susceptible soil, groundwater within a depth of 50 feet or less, and strong seismic shaking.

The project site is situated within a County of Riverside designated "moderate" liquefaction potential zone (RCPR, 2025). Based on our review of groundwater maps of the site vicinity (>50 feet bgs), the presence of shallow seated bedrock underlying the site and our experience in the project vicinity, risks associated with liquefaction and liquefaction related hazards should be considered "negligible".

IV. Tsunamis and Seiches. Because the site is situated at an inland location and is not immediately adjacent to any impounded bodies of water, risks associated with tsunamis and seiches are considered "negligible".

V. Slo?e Failure, Landsliding, Rock Falls. Slope instability in the form of landslides and rock falls were not observed at or near the subject site. The site is situated partially on relatively flat ground. The site is located immediately adjacent to an ascending bedrock slope.

However, bedrock appeared to be in a stable configuration during our site investigation.

Risks associated with slope instability (landslides, mass wasting, and rock falls) are considered "low".

VI. Expansive Soil. Generally, the near -surface soil consists of silty sand (SM). Based on the results of our laboratory testing (EI=0), the materials underlying the site are considered to have a "very low" expansion potential. The recommended remedial grading will result in substantial mixing and blending of the surface soil. The expansion potential of the subsurface soil should be reevaluated after grading.

VII. Static Settlement. Static settlement resulting from the anticipated foundation loads should be tolerable provided that the recommendations included in this report are considered in foundation design and construction. The ultimate static settlement is expected to be less than 1 inch when using the recommended allowable bearing pressures. As a practical matter, differential static settlement between footings can be assumed as one-half of the total static settlement.
1746
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VIII. Subsidence. Land subsidence can occur in valleys where aquifer systems have been subjected to extensive groundwater pumping, such that groundwater pumping exceeds groundwater recharge. Generally, pore water reduction can result in a rearrangement of skeletal grains and could result in elastic (recoverable) or inelastic (unrecoverable) deformation of an aquifer system. Locally, no fissures or other surficial evidence of subsidence were observed at or near the subject site.

Although recent investigations have documented significant subsidence within the Coachella Valley area (USGS, 2007), no fissures or other surficial evidence of subsidence were observed at the subject site. With the exception of isolated tension zones typically manifested on the ground surface as fissures and/or ground cracks, subsidence related to groundwater depletion is generally areal in nature with minimal differential settlement over short distances such as across individual buildings.

The Coachella Valley Water District has publicly acknowledged regional subsidence throughout the southern portion of the Coachella Valley and has indicated a commitment to groundwater replenishment programs that are intended to limit future subsidence. At this time, subsidence is considered a regional problem requiring regional mitigation not specific to the project vicinity.

IX. Debris Flows. Debris flows are viscous flows consisting of poorly sorted mixtures of sediment and water and are generally initiated on slopes steeper than approximately six horizontal to one vertical (6H:1V) (Boggs, 2001). Based on the flat nature of the site and the composition of the surface soil, we judge that risks associated with debris flows should be considered "negligible".

X. Flooding and Erosion. No signs of flooding or erosion were observed during our field investigation. Risks associated with flooding and erosion should be evaluated and mitigated by the project design Civil Engineer.

CONCLUSIONS
Based on the results of our investigation, it is our professional opinion that the project should be feasible from a geotechnical perspective provided that the recommendations included in this report are incorporated into design and carried out through construction. The main geotechnical concerns in the construction of the proposed project are the current building location along an existing hillside and the presence of shallow seated bedrock underlying the subject site.

We recommend that remedial work within the proposed new building and foundation areas include over -excavation and re -compaction of the primary foundation -bearing soil. Specific recommendations for foundation area preparation are presented in the Earthwork and Grading section of this report. 1747
Sladden Engineering
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March 31, 2025
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Caving did occur to varying degrees within each of our exploratory bores and the surface soil may be susceptible to caving within deeper excavations. All excavations should be constructed in accordance with the normal CalOSHA excavation criteria. Based on our observations of the materials encountered, we anticipate that the subsoil will conform to that described by Ca1OSHA as Type C and the underlying bedrock will be classified as Type A. Soil conditions should be verified in the field by a "Competent person" employed by the Contractor.

The following recommendations present more detailed design criteria that have been developed based on our field and laboratory investigation.

EARTHWORK AND GRADING
All earthwork including excavation, backfill, and preparation of the primary foundation and/or slab bearing soil should be performed in accordance with the geotechnical recommendations presented in this report and portions of the local regulatory requirements, as applicable. All earthwork should be performed under the observation and testing of a qualified soil engineer. The following geotechnical engineering recommendations for the proposed project are based on observations from the field investigation program, laboratory testing, and geotechnical engineering analyses. a. Site Clearing: Areas to be graded should be cleared of vegetation, associated root systems, underground utilities, and debris. All areas scheduled to receive fill should be cleared of old fills and any irreducible matter. The strippings should be removed off -site, or stockpiled for later use in landscape areas. Voids left by obstructions should be properly backfilled in accordance with the compaction recommendations of this report.
b. Preparation of the Building Areas. To provide firm and uniform foundation bearing conditions and to mitigate potential transition related differential settlements, we recommend over - excavation and re -compaction of the surface soil and bedrock throughout the building areas. The primary foundation -bearing soil and bedrock should be removed to a depth of at least 4 feet below the existing grade or 3 feet below the bottom of the footings, whichever is deeper.

Remedial grading should extend laterally, a minimum of 5 feet beyond the building perimeter.

The exposed surface should then be scarified, moisture conditioned to near optimum moisture content, and compacted to at least 90 percent relative compaction. The previously removed soil may then be replaced with compacted fill in accordance with the compaction recommendations provided below. Specialized grading equipment may be necessary to accomplish bedrock removals.
c. Cut/Fill Slopes. Where fill is required on slopes steeper than five horizontal to one vertical (5H:1V), all weak soil should be removed and these areas should be positively benched horizontally into bedrock in conjunction with fill placement. Keyways will be required at the toe of all fill embankments. The keyways should be excavated at least two (2) feet into competent bedrock as measured on the downhill side. The height of the benches and keyway dimensions should be determined by the geologist in the field during grading. 1748
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d. Compaction: Soil to be used as engineered fill should be free of organic material, debris, and other deleterious substances. All fill material should be placed in thin lifts, not exceeding six inches in a loose condition. If import fill is required, the material should be of a low to non - expansive nature and should meet the following criteria:
e.

Plastic Index
Liquid Limit
Percent Soil Passing #200 Sieve
Maximum Aggregate Size
Less than 12
Less than 35
Between 15% and 35%
3 inches
The subgrade and all fill should be compacted with acceptable compaction equipment, to at least 90 percent relative compaction. The bottom of the exposed subgrade should be observed by a representative of Sladden Engineering prior to fill placement. Compaction testing should be performed on all lifts to ensure proper placement of the fill materials. Table 4 provides a summary of the excavation and compaction recommendations.

TABLE 3

SUMMARY OF RECOMMENDATIONS
*Remedial Grading
Over -excavation and re -compaction within the building envelope and extending laterally for 5 feet beyond the building limits where possible and to a minimum of 4 feet below existing grade or 3 feet below the bottom of the footings, whichever is dee-Der.

Native / Import
Engineered Fill
Place in thin lifts not exceeding 6 inches in a loose condition, at near optimum moisture content and compact to a minimum of 90 percent relative compaction.

Asphalt Concrete Sections
Compact the top 12 inches to at least 95 percent compaction at near optimum moisture content.
*Actual depth may vary and should be determined by a representative of Sladden Engineering in the field during construction.

Shrinkage and Subsidence: Volumetric shrinkage of the material that is excavated and replaced as controlled compacted fill should be anticipated. We estimate that this shrinkage should be between 10 and 20 percent. Subsidence of the surfaces that are scarified and compacted should be between 1 tenth and 3 tenths of a foot. This will vary depending upon the type of equipment used, the moisture content of the soil at the time of grading and the actual degree of compaction attained.
1749
Sladden Engineering
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CONVENTIONAL SHALLOW SPREAD FOOTINGS
All footings should be founded entirely upon properly compacted engineered fill soil and should have a minimum embedment depth of 12 inches measured from the lowest adjacent finished grade. Continuous footings and isolated pad footings should have minimum widths of 12 inches and 24 inches, respectively.

Continuous footings and isolated pad footings supported upon properly compacted engineered fill soil may be designed using allowable bearing pressures of 1800 and 2000 pounds per square foot (psf), respectively. Allowable increases of 200 psf for each additional 1 foot of width and 250 psf for each additional 6 inches of depth may be used if desired. The maximum allowable bearing pressure should be 3000 psf. The allowable bearing pressures apply to combined dead and sustained live loads. The allowable bearing pressures may be increased by one-third when considering transient live loads, including seismic and wind forces.

Based on the recommended allowable bearing pressures, the total static settlement of the shallow footings is anticipated to be less than 1/2 inch, provided foundation preparations conform to the recommendations described in this report. Static differential settlement is anticipated to be approximately one-half of the total settlement for similarly loaded footings spaced up to approximately 50 feet apart.

Lateral load resistance for the conventional shallow spread footings will be developed by passive pressure against the sides of the footings below grade and by friction acting at the base of the footings.

An allowable passive pressure of 275 psf per foot of depth may be used for design purposes. An allowable coefficient of friction 0.45 may be used for dead and sustained live loads to compute the frictional resistance of the footing placed directly on compacted fill. Under seismic and wind loading conditions, the passive pressure and frictional resistance may be increased by one-third.

All footing excavations should be observed by a representative of the project geotechnical consultant to verify adequate embedment depths prior to placement of forms, steel reinforcement or concrete. The excavations should be trimmed neat, level and square. All loose, disturbed, sloughed or moisture - softened soils and/or any construction debris should be removed prior to concrete placement. Excavated soil generated from footing and/or utility trenches should not be stockpiled within the building envelope or in areas of exterior concrete flatwork. All footings should be reinforced in accordance with the project Structural Engineer's recommendations.

SLABS -ON -GRADE
To provide uniform and adequate support, concrete slabs -on -grade must be placed on properly compacted engineered fill soil as outlined in the previous sections of this report. The slab subgrade should remain near optimum moisture content and should not be permitted to dry prior to concrete placement. Slab subgrade should be firm and unyielding. Disturbed soil should be removed and replaced with engineered fill soil compacted to a minimum of 90 percent relative compaction.

Slab thickness and reinforcement should be determined by the Structural Engineer. We recommend a minimum slab thickness of 4.0 inches and minimum reinforcement of #3 bars at 18 inches on center in both directions. All slab reinforcement should be supported on concrete chairs to ensure that reinforcement is placed at slab mid -height. Final floor slab design and reinforcement should be determined by the Structural Engineer.
1750
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Slabs with moisture -sensitive surfaces should be underlain with a moisture vapor retarder consisting of a polyvinyl chloride membrane such as 10 -mil visqueen, or equivalent. All laps within the membrane should be sealed and at least 2 inches of clean sand should be placed over the membrane to promote uniform curing of the concrete. To reduce the potential for punctures, the membrane should be placed on a pad surface that has been graded smooth without any sharp protrusions. If a smooth surface can not be achieved by grading, consideration should be given to placing a thin leveling course of sand across the pad surface prior to placement of the membrane.

RETAINING WALLS
Minor retaining walls may be necessary to accomplish the proposed construction. Cantilever retaining walls may be designed using "active" pressures. Active pressures may be estimated using an equivalent fluid weight of 35 pcf for level native backfill soil acting in a triangular pressure distribution with drained backfill conditions. "At Rest" pressures should be utilized for restrained walls. At rest pressures may be estimated using an equivalent fluid weight of 55 pcf for native backfill soil with level drained backfill conditions.

We recommend that a back drain system be provided behind all retaining walls or that the walls be designed for full hydrostatic pressures. The back drains should consist of a heavy walled, four -inch diameter, perforated pipe sloped to drain to outlets by gravity, and of clean, free -draining, three-quarter to one -and -a -half -inch crushed rock or gravel. The crushed rock or gravel should extend to within one foot of the surface. The upper one foot should be backfilled with compacted, fine-grained soil to exclude surface water. A Mirafi 140N (or equivalent) filter cloth should be placed between the on -site native material and the drain rock.

We recommend that the ground surface behind retaining walls be sloped to drain. Under no circumstances should the surface water be diverted into back drains. Where migration of moisture through walls would be detrimental, the walls should be waterproofed.

CORROSION SERIES
The soluble sulfate concentrations of the surface soil were determined to be 20 parts per million (ppm).

The soil falls within the "negligible -SO" sulfate exposure category. The use of Type V cement and special sulfate -resistant concrete mixes may not be necessary. The soluble sulfate content of the surface soil should be reevaluated after grading and appropriate concrete mix designs should be established based upon post -grading test results.

The pH level of the surface soil was determined to be 7.7. Based on soluble chloride concentration testing (90 ppm) the falls within the "C1" chloride exposure category. The minimum resistivity of the surface soil was found to be 2,700 that suggests the site soil is considered to have "moderate" corrosion potential with respect to ferrous metal installations. A corrosion expert should be consulted regarding appropriate corrosion protection measures for corrosion sensitive installations. 1751
Sladden Engineering
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March 31, 2025
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UTILITY TRENCH BACKFILL
All utility trench backfill should be compacted to a minimum of 90 percent relative compaction. Trench backfill materials should be placed in lifts no greater than six inches in a loose condition, moisture conditioned (or air-dried) as necessary to achieve near optimum moisture content, and mechanically compacted to a minimum of 90 percent relative compaction. A representative of the project soil engineer should test the backfill to verify adequate compaction.

EXTERIOR CONCRETE FLATWORK
To provide uniform support and minimize settlement related cracking of concrete flatwork, the subgrade soil within concrete flatwork areas should be compacted to a minimum of 90 percent relative compaction.

A representative of the project geotechnical consultant should observe and verify the density and moisture content of the soil prior to concrete placement.

ON -SITE PAVEMENT DESIGN
Asphalt concrete pavements should be designed in accordance with the Caltrans Highway Design Manual based on the R -Value and Traffic Index. The R -value of the near -surface soil was estimated to be

50. Because site grading will result in the significant blending of the near surface soil, the R -value should be determined based on post grading test results. For preliminary pavement design, Traffic Indices (TI) of 5.0 and 6.5 were used for the light -duty and heavy-duty pavements, respectively. We assumed Asphalt Concrete (AC) over Class H Aggregate Base (AB). The preliminary flexible pavement layer thickness is as follows:

TABLE 4

RECOMMENDED ASPHALT PAVEMENT SECTION LAYER THICKNESS
Pavement Material
Recommended Thickness
TI = 5.0
Asphalt Concrete Surface Course

3.0 inches
Class II Aggregate Base Course

4.0 inches
Com Dacted Subgrade Soil

12.0 inches
Asphalt concrete and Class II aggregate base should conform to the latest edition of the Standard Specifications for Public Works Construction ("Greenbook") or CalTrans Standard Specifications. The aggregate base course should be compacted to at least 95 percent of the maximum dry density as determined by ASTM Method D 1557.

DRAINAGE
All final grades should be provided with positive gradients away from foundations to provide rapid removal of surface water runoff to an adequate discharge point. No water should be allowed to be pond on or immediately adjacent to foundation elements. To reduce water infiltration into the subgrade soil, surface water should be directed away from building foundations to an adequate discharge point.

Subgrade drainage should be evaluated upon completion of the precise grading plans and in the field during grading.
1752
Sladden Engineering
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March 31, 2025
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LIMITATIONS
The findings and recommendations presented in this report are based upon an interpolation of the soil conditions between the exploratory locations and extrapolation of these conditions throughout the proposed building areas. Should conditions encountered during grading appear different than those indicated in this report, this office should be notified.

The use of this report by other parties or for other projects is not authorized. The recommendations of this report are contingent upon monitoring of the grading operation by a representative of Sladden Engineering. All recommendations are considered to be tentative pending our review of the grading operation and additional testing, if indicated. If others are employed to perform any soil testing, this office should be notified prior to such testing in order to coordinate any required site visits by our representative and to assure indemnification of Sladden Engineering.

We recommend that a pre -job conference be held on the site prior to the initiation of site grading. The purpose of this meeting will be to assure a complete understanding of the recommendations presented in this report as they apply to the actual grading performed.

ADDITIONAL SERVICES
Once completed, final project plans and specifications should be reviewed by use prior to construction to confirm that the full intent of the recommendations presented herein have been applied to design and construction. Following review of plans and specifications, observation should be performed by the Soil Engineer during construction to document that foundation elements are founded on/or extend into the properly compacted soil, and that suitable backfill soil is placed upon competent materials and properly compacted at the recommended moisture content.

Tests and observations should be performed during grading by the Soil Engineer or his representative in order to verify that the grading is being performed in accordance with the project specifications. Field density testing shall be performed in accordance with acceptable ASTM test methods. The minimum acceptable degree of compaction should be 90 percent for engineered fill soil and 95 percent for Class H aggregate base as obtained by ASTM Test Method D1557. Where testing indicates insufficient density, additional compactive effort shall be applied until retesting indicates satisfactory compaction. 1753
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REFERENCES
Boggs, S. Jr., 2001, "Principles of Sedimentology and Stratigraphy", Prentice Hall, third edition Building Seismic Safety Council (BSSC), 2014, Earthquake Scenario Event Set webpage; available at:
https://usgs.maps . arcgis. com/apps/webappviewer/index.html?id=14d2f75c7c4f4619936dac0d14e1 e468
California Building Code (CBC), 2022, California Building Standards Commission.

California Department of Conservation (CDOC), 2025, Earthquake Zones of Required Investigation; available at: https://maps.conservation.ca.gov/cgs/EQZA D-D/app/ California Department of Water Resources (CDWR), 2025, Historical Data by Well -Map Interface, available at : https://wdl.water.ca.gov/waterdatalibrary/ California Geological Survery (CGS), 2025, Earthquake Zones of Required Investigation Maps and Reports.

Cao T., Bryant, W.A., Rowshandel B., Branum D., Wills C.J., 2003, "The Revised 2002 California Probabilistic Seismic Hazard Maps".

GoogleEarth.com, 2025, Vertical Aerial Photograph for the Rancho Mirage Area, California, Undated, Variable Scale.

Jennings, Charles W. (Compiler), 1994, Fault Activity Map of California and Adjacent Areas, California Division of Mines and Geology, Geologic Data Map No. 6
Prest Vuksic Greenwood Architects Interiors, 2024, Howard World Wildlife Museum Overall Site Plan.

Riverside County Parcel Viewer, available at:
https://gisl.countyofriverside.us/Html5Viewer/index.html?viewer=MMC Public Rogers T.H (compiler), Jenkins, O.P (edition), 1965, Geologic Map of California, Santa Ana Sheet, sixth printing 1992, California Division of Mines and Geology, 1: 250,000.

Southern California Earthquake Data Center (SCEDC), 2025, Significant Earthquakes and Faults; available at: https://scedc.caltech.edu/
Structural Engineer Association (SEA), 2025, Seismic Design Maps; available at:
https://seismicmaps.org/
United States Geological Survey (USGS), 2007, "Detection and Measurement of Land Subsidence Using Global Positioning System and Interferometric Synthetic Aperture Radar, Coachella Valley, California, 1996-2005", Scientific Investigations Report 2007-5251. 1754
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REFERENCES
(Continued)
United States Geological Survey (USGS), 2021, Cathedral City 7.5 Minute Quadrangle Map, 1:24000.

United States Geological Survey (USGS), 2025a, Quaternary Fault and Fold Database; available at:
https://geohazards.usgs.gov/hazards/interactive/
1755
Sladden Engineering
www.SladdenEngineering.com

FIGURES

SITE LOCATION MAP

REGIONAL GEOLOGIC MAP

BOREHOLE LOCATION PLAN
1756
Sladden Engineering
www.SladdenEngineering.com

SITE LOCATION MAP
FIGURE
Project Number:
544-25009
Report Number:
25-03-126
1 Sladden Engineering
Date:
1757 _
March 31, 2025

Thous , rui

EXPLANATION OF SITE UNITS
AIhrz iumri
1 Pleistocene t onmarine
Pre -Cretaceous nietaserlinientary
rc rk4
Rogers 1965

REGIONAL GEOLOGIC MAP
FIGURE
Project Number:

Report Number:
544-25009
25-03-126
2 Sladden Engineering
Date:
158
March 31, 2025

Prest Vuksic (2024)

BOREHOLE LOCATION PLAN
FIGURE
Sladden Engineering
Project Number: 544-25009
Report Number: 25-03-126
1 59
Date:

March 31, 2025
3 APPENDIX A

FIELD EXPLORATION
1760
Sladden Engineering
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APPENDIX A

FIELD EXPLORATION
For our field investigation, three (3) exploratory boreholes were excavated on the subject site. Continuous logs of the materials encountered were made by a representative of Sladden Engineering. Materials encountered in the bores were classified in accordance with the Unified Soil Classification System.

Representative undisturbed samples were obtained within our borings by driving a thin -walled steel penetration sampler (California split spoon sampler) or a Standard Penetration Test (SPT) sampler with a 140 pound automatic -trip hammer dropping approximately 30 inches (ASTM D1586). The number of blows required to drive the samplers 18 inches was recorded in 6 -inch increments and blowcounts are indicated on the boring logs.

The California samplers are 3.0 inches in diameter, carrying brass sample rings having inner diameters of

2.5 inches. The standard penetration samplers are 2.0 inches in diameter with an inner diameter of 1.5 inches. Undisturbed samples were removed from the sampler and placed in moisture sealed containers in order to preserve the natural soil moisture content. Bulk samples were obtained from the excavation spoils and samples were then transported to our laboratory for further observations and testing. 1761
Sladden Engineering
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BORE LOG
( )
Sladden Engineering
Equipment: Mobil -B-61
Date Drilled: 2/6/2025
Elevation: 270Ft.MSL
Boring No: BH-1
Sample
Blow Counts
Bulk Sample
Expansion Index
0 O
N
't
e
0 %o Moisture
Density, pcf
Depth (Feet)
Graphic Lithology
Description
-
3 3 4
17 50
50-9"
1 0

1.3 6.5

2.6 89.3
_

4.0 Inches Asphalt
- 2
- 4 -
- 6 -
_ _
— 8 —
10 Sandy Silt (ML); dark grayish brown, dry, medium stiff, non plastic (Qal/Qs).
-
- 12
Bedrock (Metamorphite); moderately hard, moderately strong, highly

R
- 14
16 _
- 18 -
_ _
- 20 -
-22-
- 24 -
- 26 -
- 28 -
-30-
-3?-
- 34 -
-36-
-38-
- 40 -
-4?-
- 44 -
- 46 -
- 48 -
-50-
Practical Bedrock Refusal at -16.5 Feet bgs.

Bedrock Encountered at 10.0 Feet bgs.

No Groundwater or Seepage Encountered.

Completion Notes:
1 PROPOSED HOWARD WORLD WILDLIFE MUSEUM
NEC MIRAGE DRIVE & HIGHWAY 111, RANCHO MIRAGE
'r . o: 544-25009
Page
1 l r o: 25-03-126

SORE LOG
S l a d d e n Engineering
Equipment: Mobil -B-61
Date Drilled: 2/6/2025
Elevation: 270 Ft. MSL
Boring No: BH-2
Sample
Blow Counts
Bulk Sample
Expansion Index
% Minus #200
Moisture
Density, pd
Depth (Feet)
Graphic Lithology
Description
15 21 39
50-3"

3.4 115.9
_ _
- 2
Silty Sand/Sandy Silt (SM/ML); grayish brown, dry, fine -to coarse- grained (Disturbed).
— _
— 4
Bedrock (Metamorphite); moderately hard, moderately strong, highly w
— 6 —
— 8 -
-10-
-12-
- 14-
- 16—
_ _
18_ _
- 20 -
- 22 -
-24-
-26-
- 28 -
- 30 -
- 32 -
-34-
- 36 -
-38-
- 40 -
- 42 -
- 44 -
- 46 -
-48-
- 50 -
Practical Bedrock Refusal at -5.0 Feet bgs.

Bedrock Encountered at 2.0 Feet bgs.

No Groundwater or Seepage Encountered.

T
Completion Notes:
1 PROPOSED HOWARD WORLD WILDLIFE MUSEUM
NEC MIRAGE DRIVE & HIGHWAY 111, RANCHO MIRAGE
ryjQc io: 544-25009
Page
2 1�il1I o: 25-03-126

Sladden

BORE LOG
Equipment: Mobil -B-61
Date Drilled: 2/6/2025
Engineering
Elevation: 270 Ft. MSL
Boring No: BH-3
Sample
Blow Counts
Bulk Sample
Expansion Index
0 %o Moisture
Density, pcf
Depth (Feet)
Graphic Lithology
rt
O
C
O
N
.5
0 e
_ _
Silty Sand/Sandy Silt (SM/ML); grayish brown, dry, fine -to coarse- - 2
grained (Disturbed).
- 4 -
5 8 11

1.5 95.1
6 Silty Sand (SM); grayish brown, dry, medium dense, fine -to coarse- - -
_ _
grained (Qal/Qa).
- 8 -
- 10-
T
7 5 6

1.5 - -
Silty Sand (SM); grayish brown, dry, medium dense, fine -to coarse- - 12 _
grained (Qal/Qa).
- 14-
12 14 17

0.8 114.9
- 16 -
Silty Sand (SM); grayish brown, dry, medium dense, fine -to coarse- _ _
grained (Qal/Qa).
-18-
-20-
T
8 10 11

1.4 Silty Sand (SM); grayish brown, dry, medium dense, fine -to coarse- - _
,)?
grained (Qa1/Qa).
- 24 -
_ _
Terminated at -21.5 Feet bgs.
- 26 -
No Bedrock Encountered.
_ _
No Groundwater or Seepage Encountered.
_ 28 _
-30-
-32-
- 34 -
- 36 -
- 38 -
- 40 -
-42-
- 44 -
-46-
-48-
-50—
Completion Notes:

PROPOSED HOWARD WORLD WILDLIFE MUSEUM
NEC MIRAGE DRIVE & HIGHWAY 111, RANCHO MIRAGE
o: 544-25009
I
Z'6i4o:

Page
3 25-03-126

APPENDIX B

LABORATORY TESTING
1765
Sladden Engineering
www.SladdenEngineering.com

APPENDIX B

LABORATORY TESTING
Representative bulk soil samples were obtained in the field and returned to our laboratory for additional observations and testing. Laboratory testing was generally performed in two phases. The first phase consisted of testing in order to determine the compaction of the existing natural soil and the general engineering classifications of the soils underlying the site. This testing was performed in order to estimate the engineering characteristics of the soil and to serve as a basis for selecting samples for the second phase of testing. The second phase consisted of soil mechanics testing. This testing including consolidation, shear strength and expansion testing was performed in order to provide a means of developing specific design recommendations based on the mechanical properties of the soil.

CLASSIFICATION AND COMPACTION TESTING
Maximum Density -Optimum Moisture Determinations: Representative soil types were selected for maximum density determinations. This testing was performed in accordance with the ASTM Standard D1557, Test Method A. Graphic representations of the results of this testing are presented in this appendix. The maximum densities are compared to the field densities of the soil in order to determine the existing relative compaction to the soil.

Classification Testing: Soil samples were selected for classification testing. This testing consists of mechanical grain size analyses. This provides information for developing classifications for the soil in accordance with the Unified Soil Classification System which is presented in the preceding appendix.

This classification system categorizes the soil into groups having similar engineering characteristics. The results of this testing is very useful in detecting variations in the soil and in selecting samples for further testing.

SOIL MECHANIC'S TESTING
Expansion Testing: One (1) bulk sample was selected for Expansion testing. Expansion testing was performed in accordance with the UBC Standard 18-2. This testing consists of remolding 4 -inch diameter by 1 -inch thick test specimens to a moisture content and dry density corresponding to approximately 50 percent saturation. The samples are subjected to a surcharge of 144 pounds per square foot and allowed to reach equilibrium. At that point the specimens are inundated with distilled water. The linear expansion is then measured until complete.

Direct Shear Testing: One (1) bulk sample was selected for Direct Shear testing. This test measures the shear strength of the soil under various normal pressures and is used to develop parameters for foundation design and lateral design. Tests were performed using a recompacted test specimen that was saturated prior to tests. Tests were performed using a strain controlled test apparatus with normal pressures ranging from 800 to 2300 pounds per square foot.

Corrosion Series Testing: The soluble sulfate concentrations of the surface soil were determined in accordance with California Test Method Number (CA) 417. The pH and Minimum Resistivity were determined in accordance with CA 643. The soluble chloride concentrations were determined in accordance with CA 422.
1766
Sladden Engineering
www.SladdenEngineering.com

Sladden Engineering
450 Egan Avenue, Beaumont CA 92223 (951) 845-7743 Fax (951) 845-8863 Maximum Density/Optimum Moisture
ASTM D698/D1557
Project Number:

Project Name:

Lab ID Number:

Sample Location:

Description:
544-25009
NEC Mirage Drive & HWY 111
LN6-25046
BH-1 Bulk 1 @ 0-5'
Dark Brown Silty Sand (SM)
Maximum Density: 137.5 pcf
Optimum Moisture: 8%
Corrected for Oversize (ASTM D4718)
Dry Density, pcf
145
140
135
130
125
120
115
110
105
100
Sieve Size % Retained
3/4"
3/8"
#4

10.5 March 28, 2025
ASTM D-1557 A
Rammer Type: Machine
5 10
15 20
Zero Air Voids Lines,
sg =2.65, 2.70, 2.75
Moisture Content, %
25 Beaumonl 7t"7Uena Park

Sladden Engineering
450 Egan Avenue, Beaumont, CA 92223 (951) 845-7743 Fax (951) 845-8863 Expansion Index
ASTM D 4829
Job Number:

Job Name:

Lab ID Number:

Sample ID:

Soil Description:
544-25009
NEC Mirage Drive & HWY 111
LN6-25046
BH-1 Bulk 1 @ 0-5'
Dark Brown Silty Sand (SM)
Wt of Soil + Ring:
606.3
Weight of Ring:
188.5
Wt of Wet Soil:
417.8
Percent Moisture:

6.3%
Sample Height, in

0.95 Wet Density, pcf:
133.7
Dry Denstiy, pcf:
125.8
% Saturation:

50.1 Expansion
Rack # 3
Date/Time
3/27/2025
2:00 PM
Initial Reading

0.0000
Final Reading

0.0000
Expansion Index
(Final - Initial) x 1000
o
March 28, 2025
Beaumont • Indio • Buena Park
1768

Sladden Engineering
450 Egan Avenue, Beaumont, CA 92223 (951) 845-7743 Fax (951) 845-8863 Direct Shear ASTM D 3080-04
(modified for unconsolidated condition)
Job Number: 544-25009
Job Name NEC Mirage Drive & HWY 111
Lab ID No. LN6-25046
Sample ID BH-1 Bulk 1 @ 0-5'
Classification Dark Brown Silty Sand (SM)
Sample Type Remolded @ 90% of Maximum Density
March 28, 2025
Initial Dry Density: 127.0 pcf
Initial Mosture Content: 3.9 %
Peak Friction Angle (0): 37°
Cohesion (c): 240 psf
Test Results
1 2
3 4
Average
Moisture Content, %

6.7 6.7

6.7 6.7

6.7 Saturation, %

55.6 55.6

55.6 55.6

55.6 Normal Stress, kps

0.704

1.409

2.817

5.635
Peak Stress, kps

0.807

1.264

2.354

4.491

6.0 5.0
Q 4.0
t- 3.0
L
6 2.0

1.0 0.0
0 • Peak Stress Linear (Peak Stress)
1 2 3
Normal Stress, kps
4 5
6 Beaumonl 76'9uena Park

Sladden Engineering
450 Egan Avenue, Beaumont, CA 92223 (951) 845-7743 Fax (951) 845-8863 Gradation
ASTM C117 & C136
Project Number: 544-25009
Project Name: NEC Mirage Drive & HWY 111
Lab ID Number: LN6-25046
Sample ID: BH-1 Bulk 1 0-5'
March 28, 2025
Soil Classification: SM
Sieve Sieve Percent
Size, in Size, mm Passing
2" 50.8 100.0
1 1/2" 38.1 100.0
1" 25.4 98.7
3/4" 19.1 97.8
1/2" 12.7 95.8
3/8" 9.53 94.3
#4 4.75 89.4
#8 2.36 78.0
#16 1.18 62.0
#30 0.60 47.2
#50 0.30 35.6
#100 0.15 26.0
#200 0.075 16.9
100.o

90.0 80.0

70.0 60.0
bq
coo

50.0 40.0

30.0 20.0

10.0 •

0.0 100.000 10.000

1.000 0.100
Sieve Size, mm

0.010 0.001
Beaumonl 71170uena Park

Sladden Engineering
6782 Stanton Ave., Suite C, Buena Park, CA 90621 (714) 523-0952 Fax (714) 523-1369 45090 Golf Center Pkwy, Suite F, Indio, CA 92201 (760) 863-0713 Fax (760) 863-0847 450 Egan Avenue, Beaumont, CA 92223 (951) 845-7743 Fax (951) 845-8863 Date: March 28, 2025
Account No.: 544-25009
Customer: Robert S. Howard Foundation
Location: Proposed Howard World Wildlife Museum NEC Mirage Drive & HWY 111 Rancho Mirage
Analytical Report
Corrosion Series
BH-1 @ 0-5'
pH Soluble Sulfates Soluble Chloride Min. Resistivity
per CA 643 per CA 417 per CA 422 per CA 643
ppm ppm ohm -cm

7.7 20
90 2,700
1771

APPENDIX C

SEISMIC DESIGN MAP AND REPORT
1772
Sladden Engineering
www.SladdenEngineering.com

2/24/25, 9:11 AM
U.S. Seismic Design Maps
USGS web services were down for some period of time and as a result this tool wasn't operational, resulting in timeout error.

USGS web services are now operational so this tool should work as expected.

Latitude, Longitude: 33.7662, -116.4439
Ga g
e
Tanforan
Golden State St
,4 °gePm lea
OSHPD
rn
3 o
a.. Vista Cove at
a Rancho Mirage
a
ro
Map data ©2025
Date
Design Code Reference Document
Risk Category
Site Class
2/24/2025, 9:10:46 AM
ASCE7-16
I I
C - Very Dense Soil and Soft Rock
Type Value Description
Ss 1.5 MCER ground motion. (for 0.2 second period)
S1 0.613 MCER ground motion. (for 1.0s period)
SMS 1.8 Site -modified spectral acceleration value
SM1 0.858 Site -modified spectral acceleration value
SDS 1.2 Numeric seismic design value at 0.2 second SA
SD1 0.572 Numeric seismic design value at 1.0 second SA Type Value Description
SDC D Seismic design category
Fa 1.2 Site amplification factor at 0.2 second
Fv 1.4 Site amplification factor at 1.0 second
PGA 0.656 MCEG peak ground acceleration
FPGA 1.2 Site amplification factor at PGA
PGAM 0.788 Site modified peak ground acceleration
TL 8 Long -period transition period in seconds
SsRT 1.827 Probabilistic risk -targeted ground motion. (0.2 second) SsUH 1.997 Factored uniform -hazard (2% probability of exceedance in 50 years) spectral acceleration SsD 1.5 Factored deterministic acceleration value. (0.2 second) S1RT 0.702 Probabilistic risk -targeted ground motion. (1.0 second) S1 UH 0.784 Factored uniform -hazard (2% probability of exceedance in 50 years) spectral acceleration.

S1D 0.613 Factored deterministic acceleration value. (1.0 second) PGAd 0.656 Factored deterministic acceleration value. (Peak Ground Acceleration) PGAUH 0.788 Uniform -hazard (2% probability of exceedance in 50 years) Peak Ground Acceleration CRS 0.915 Mapped value of the risk coefficient at short perig�is7 73 https://www.seismicmaps.org 'I {J 1/3

2/24/25, 9:11 AM U.S. Seismic Design Maps
Type Value Description
CR1 0.895 Mapped value of the risk coefficient at a period of 1 s Cv 1.2 Vertical coefficient
https://www.seismicmaps.org
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2/24/25, 9:11 AM U.S. Seismic Design Maps

DISCLAIMER
While the information presented on this website is believed to be correct, SEAOC /OSHPD and its sponsors and contributors assume no responsibility or liability for its accuracy. The material presented in this web application should not be used or relied upon for any specific application without competent examination and verification of its accuracy, suitability and applicability by engineers or other licensed professionals. SEAOC / OSHPD do not intend that the use of this information replace the sound judgment of such competent professionals, having experience and knowledge in the field of practice, nor to substitute for the standard of care required of such professionals in interpreting and applying the results of the seismic data provided by this website, Users of the information from this website assume all liability arising from such use. Use of the output of this website does not imply approval by the governing building code bodies responsible for building code approval and interpretation for the building site described by latitude/longitude location in the search results of this website. https://www.seismicmaps.org
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GLOBAL WILDLIFE DISCOVERY MUSEUM
Initial Study/Mitigated Negative Declaration
August 2025
Appendix F
Preliminary Water Quality Management Plan
City of Rancho Mirage F
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Whitewater River Region Preliminary WQMP
Howard Museum
Project Specific
PreliminaryWater Quality Management
Plan
Howard World Wildlife Museum
69934 CA -111, Rancho Mirage, CA
Prepared for:

Robert S. Howard Foundation
74-900 Hwy 111, Suite #120
Indian Wells, CA 92210
Cindy Finerty
[email protected]
Prepared by:
@IGTheAltumGroup
James R. Bazua, PE
44-600 Village Court Suite 100
Palm Desert, CA 92260
Telephone: (760) 346 - 4750
ja -s.ba ua ■ thealtumgroup.com
Ja
RCE 58.9
327/25
Date
Exp. 12/31/26
Original Date Prepared: March 27, 2025
Revision Date(s):
1777

Whitewater River Region Preliminary WQMP
World Wildlife Museum

OWNER'S CERTIFICATION
This project -specific Preliminary Water Quality Management Plan (WQMP) has been prepared for:

Prest Vuksic Greenwood Architects by The Altum Group for the project known as The World Wildlife Museum at 69934 CA -111, Rancho Mirage, CA 92270.

This Preliminary WQMP is intended to comply with the requirements of The City of Rancho Mirage for ASSESSOR'S PARCEL NUMBERS: 689-040-023, 689-040-025, and 689-040-028 which includes the requirement for the preparation and implementation of a project -specific WQMP.

The undersigned, while owning the property/project described in the preceding paragraph, shall be responsible for the implementation of the WQMP and will ensure that the WQMP is amended as appropriate to reflect up-to-date conditions on the site. This Preliminary WQMP will be reviewed with the facility operator, facility supervisors, employees, tenants, maintenance and service contractors, or any other party (or parties) having responsibility for implementing portions of the WQMP. At least one copy of the Final WQMP will be maintained at the project site or project office in perpetuity.

The undersigned is authorized to certify and to approve implementation of the Final WQMP. The undersigned is aware that implementation of the WQMP is enforceable under The City of Rancho Mirage Water Quality Ordinance (City of Rancho Mirage Ordinance 13.05.010).

If the undersigned transfers its interest in the subject property/project, the undersigned shall notify the successor in interest of its responsibility to implement the WQMP. "I, the undersigned, certify under penalty of law that I am the owner of the property that is the subject of the final WQMP, and that the provisions of the final WQMP have been reviewed and accepted and that the final WQMP will be transferred to future successors in interest." ATTEST
Owner's Signature
Owner's Printed Name
Notary Signature
Owner
Printed Name
Owner's Title/Position
Title/Position
Date
Date

THIS FORM SHALL BE NOTARIZED BEFORE ACCEPTANCE OF THE

FINAL PROJECT SPECIFIC WQMP
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Whitewater River Region Preliminary WQMP
World Wildlife Museum
Contents

SECTION PAGE
I. Project Description 1
IL Site Characterization 5
III. Pollutants of Concern 7
IV. Hydrologic Conditions of Concern 8
V. Best Management Practices 9
V.1 SITE DESIGN BMP CONCEPTS, LID/SITE DESIGN AND TREATMENT CONTROL BMPs 9 V.1.A SITE DESIGN BMP CONCEPTS AND LID/SITE DESIGN BMPs 11 V.1.B TREATMENT CONTROL BMPs 18
V.1.C MEASURABLE GOAL SUMMARY 20
V.2 SOURCE CONTROL BMPs 21
V.3 EQUIVALENT TREATMENT CONTROL BMP ALTERNATIVES 25
V.4 REGIONALLY -BASED BMPs 25
VI. Operation and Maintenance Responsibility for BMPs 26 VII. Funding 29
TABLES
TABLE 1. POLLUTANT OF CONCERN SUMMARY 7
TABLE 2. BMP SELECTION MATRIX BASED UPON POLLUTANT OF CONCERN REMOVAL EFFICIENCY 10 TABLE 3. IMPLEMENTATION OF SITE DESIGN BMP CONCEPTS 12
TABLE 4. LID/SITE DESIGN BMPS MEETING THE LID/SITE DESIGN MEASURABLE GOAL 16 TABLE 5: TREATMENT CONTROL BMP SUMMARY 19
TABLE 6: MEASURABLE GOAL SUMMARY 20
TABLE 7. SOURCE CONTROL BMPs 21

APPENDICES
A. CONDITIONS OF APPROVAL
B. VICINITY MAP, WQMP SITE PLAN, AND RECEIVING WATERS MAP C. SUPPORTING DETAIL RELATED TO HYDROLOGIC CONDITIONS OF CONCERN (IF APPLICABLE) D. EDUCATIONAL MATERIALS
E. SOILS REPORT (IF APPLICABLE)
F. STRUCTURAL BMP AND/OR RETENTION FACILITY SIZING CALCULATIONS AND DESIGN DETAILS G. AGREEMENTS — CC&Rs, COVENANT AND AGREEMENTS, BMP MAINTENANCE AGREEMENTS AND/OR

OTHER MECHANISMS FOR ENSURING ONGOING OPERATION, MAINTENANCE, FUNDING AND

TRANSFER OF REQUIREMENTS FOR THIS PROJECT -SPECIFIC WQMP H. PHASE 1 ENVIRONMENTAL SITE ASSESSMENT - SUMMARY OF SITE REMEDIATION CONDUCTED AND

USE RESTRICTIONS
I. PROJECT -SPECIFIC WQMP SUMMARY DATA FORM
March 27, 2025
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Whitewater River Region Preliminary WQMP
World Wildlife Museum
I. Project Description
Applicant: Prest Vuksic Greenwood Architects
44-530 San Pablo Avenue, Ste 200
Palm Desert, CA 92260
WQMP Preparer:

G TheAltumGroup
James R. Bazua, PE
44-600 Village Court Suite 100
Palm Desert, CA 92260
Telephone: (760) 346 - 4750
[email protected]
James Bazua Date
RCE 58394 Exp. 12/31/2
Project Site Address: 69934 CA -111
Rancho Mirage, CA 92270
Planning Area/ C -G General Commercial
Community Name/
Development Name:

APN Number(s): 689-040-023, 689-040-025, 689-040-028
Latitude & Longitude: 33.766514, -116.443635
Receiving Water: Whitewater River
Project Site Size: 6.78 acres
Standard Industrial Classification (SIC) Code: 8412 — Museums and Art Galleries Formation of Home Owners' Association (HOA)
or Property Owners Association (POA): Y n N
March 27, 2025
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Whitewater River Region Preliminary WQMP
World Wildlife Museum
Additional Permits/Approvals required for the Project:

AGENCY
Permit required
State Department of Fish and Wildlife, Fish and Game
Code § 1602 Streambed Alteration Agreement
Y N1
State Water Resources Control Board, Clean Water Act
(CWA) Section 401 Water Quality Certification
Y NN
US Army Corps of Engineers, CWA Section 404 permit
Y ❑ NE
US Fish and Wildlife, Endangered Species Act Section 7
biological opinion
y ❑ NO
Statewide Construction General Permit Coverage
Y ' N
Statewide Industrial General Permit Coverage
1' ❑ Na
South Coast Air Quality Management District — PM10
Approval to comply with Rule 403
Y a N
Other: City of Rancho Mirage Grading Permit and Building Permit Y a ❑
March 27, 2025
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Whitewater River Region Preliminary WQMP
World Wildlife Museum
Project Description
The proposed project, `World Wildlife Museum', is located at 69934 CA State Highway 111, Rancho Mirage, CA 92270 on a 6.78 acre site. Project activities consist of the construction of The World Wildlife Museum, a commercial museum development that will occupy a portion of Parcel 1 of Parcel Map No. 8674 (689-040-025), Parcel 2 of Parcel Map No. 8674 (689-040-023) and Lot 88, R.M. Annex No 2 (689-040-028). Construction activities will disturb approximately 3.2 acres of the 6.78 acre site.

Under existing conditions, the site is partially developed with a parking lot. The existing parking lot served a previous commercial building located on Parcel 2 which has been completely demolished.

Existing drainage is designed to surface flow to a low point located in the northeasterly portion of the parking lot toward an existing combination curb inlet/grate catch basin that collects runoff in a sump condition and directs flow into an existing storm drain pipe designed to convey runoff off -site toward the existing Whitewater Evacuation Channel (receiving water) located nearby, to the northeast. Lot 88, R.M. Annex No. 2 (689-040-028) is located at the southerly end of the project boundary, is currently vacant and surface flows over pervious ground cover in a southeasterly direction toward Mirage Cove Drive, and off -site within public right of way and ultimately into Whitewater Evacuation Channel to the east.

Under post development conditions, the existing parking lot (Parcels 1 &2) will be improved and re - purposed, and a new museum building will be constructed and new separate overflow parking facilities will be constructed on Lot 88. Storm runoff generated on improved portions of Parcel 1 and Parcel 2 will continue to flow to the low point of the existing parking lot and into a new combination collection basin and underground storage system designed to replace the existing curb inlet. Storm runoff generated on the overflow parking improvements within Lot 88 will surface flow toward the east into a new surface detention basin.

Developments south and southwest of the Whitewater Evacuation Channel within City of Rancho are required to comply with MS4 permit WQMP treatment requirements but are not required to retain the runoff generated during the 100 year design storm event. The World Wildlife Museum project will collect and store runoff underground (Parcels 1 & 2) and in a surface retention basin (Lot 88) in a manner that captures and treats the Design Capture Volume (DCV) and ensures that flowrates, velocities and volumes leaving the site under the proposed condition do not exceed those under the existing condition.

Flows exceeding the storage capacity of the new on -site storage facilities will leave the project site, and continue to flow toward the Whitewater Evacuation Channel as they do under the existing condition.

Appendix A of this project -specific WQMP will include a complete copy of the Conditions of Approval.

Appendix B of this project -specific Preliminary WQMP includes:
a. A Vicinity Map identifying the project site and surrounding planning areas in sufficient detail; and
b. A Site Plan for the project. The Site Plan included as part of Appendix B depicts the following project features:
• Location and identification of all structural BMPs, including Source Control, LID/Site Design and Treatment Control BMPs.
• Landscaped areas.
• Paved areas and intended uses (i.e., parking, outdoor work area, outdoor material storage area, sidewalks, patios, tennis courts, etc.).

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Whitewater River Region Preliminary WQMP
World Wildlife Museum
• Number and type of structures and intended uses (i.e., buildings, tenant spaces, dwelling units, community facilities such as pools, recreation facilities, tot lots, etc.). • Infrastructure (i.e., streets, storm drains, etc.) that will revert to public agency ownership and operation.
• Location of existing and proposed public and private storm drainage facilities (i.e., storm drains, channels, basins, etc.), including catch basins and other inlets/outlet structures.

Existing and proposed drainage facilities should be clearly differentiated. • Location(s) of Receiving Waters to which the project directly or indirectly discharges. • Location of points where onsite (or tributary offsite) flows exit the property/project site. • Delineation of proposed drainage area boundaries, including tributary offsite areas, for each location where flows exit the project site and existing site (where existing site flows are required to be addressed). Each tributary area should be clearly denoted. • Pre- and post -project topography.

Appendix I is a one page form that summarizes pertinent information relative to the project -specific WQMP.

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Whitewater River Region Preliminary WQMP
World Wildlife Museum
II. Site Characterization
Land Use Designation or Zoning: C -G General Commercial Current Property Use: Paved Parking/ Vacant Land
Proposed Property Use: Commercial Development
Availability of Soils Report: Y ® Nn Note: A soils report is required if infiltration BMPs are utilized. Attach report in Appendix E.

Phase 1 Site Assessment: Y n NE] Note: If prepared, attached remediation summary and use restrictions in Appendix H.

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Whitewater River Region Preliminary WQMP
World Wildlife Museum
Receiving Waters for Urban Runoff from Site
Receiving Waters
EPA Approved 303(d)
List Impairments
Designated
Beneficial
Uses
Proximity to RARE Beneficial
Use Designated Receiving
Waters
Whitewater River
None

MUN, AGR,
GWR, REC 1,
REC 2, WARM,

COLD, WILD,
POW
Not
designated as RARE
(0.5 miles)
Coachella Valley
Storm Water Channel
Pathogens, Toxephene
FRSH, REC 1,
REC 2, WARM,

WILD, RARE
Designated as RARE (17.0 miles)
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Whitewater River Region Preliminary WQMP
World Wildlife Museum
III. Pollutants of Concern
Table 1. Pollutant of Concern Summary
Pollutant Category
Potential for Project
and/or Existing Site
Causing Receiving Water
Impairment
Bacteria/Virus (pathogens(1))
YES
YES
Heavy Metals
YES
NO
Nutrients
YES
YES
Toxic Organic Compounds (3)
YES
YES
Sediment/Turbidity
YES
NO
Trash & Debris
YES
NO
Oil & Grease (4)
YES
NO
Oxygen Demanding Substances
YES
NO
Toxaphene(2), DDT and Dieldren
YES
YES
1) Pathogens are disease causing virus or bacteria. Pathogens are an impairment in the Coachella Valley Storm Water Channel from Dillon Road to the Salton Sea. 2) Toxaphene is an insecticide which was banned from use in the United States in 1990.

Therefore, it is not a potential for the project but is currently a receiving water impairment. 3) Petroleum hydrocarbons are one of the most common organic compounds associated with street and parking lots and is a potential pollutant for the site. See Section V.2 for a description of appropriate Source Control BMPs.
4) Oil and Grease associated with landscaping and onsite operations are potential pollutants for the development. See Section V.2 for a description of appropriate Source Control BMP's.

Discussion of Receiving Water Impairment
Most of the pollutants which have caused impairment to the project's receiving waters are no longer being used. Many of these pollutants can be traced back to agricultural operations prevalent in the Coachella Valley. In addition, water quality management practices (i.e., the MS4 Permit requirements) have been implemented throughout the region to govern storm and non -storm water discharges to the designated receiving waters. These discharges have the ability to impact the "Beneficial Uses" of the receiving waters and can cause or threaten to cause a condition of "pollution" or "nuisance". The purpose of the project WQMP is to provide Best Management Practices (BMPs) which the property owner or their designee will implement and maintain to meet the requirements of the MS4 permit, thus minimizing the pollutant load associated with urban runoff.

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Whitewater River Region Preliminary WQMP
World Wildlife Museum
IV. Hydrologic Conditions of Concern
Local Jurisdiction Requires On -Site Retention of Urban Runoff:

Yes n The project will be required to retain urban runoff onsite in conformance with local ordinance (See Table 6 of the WQMP Guidance document, "Local Land use Authorities Requiring Onsite Retention of Stormwater"). This section does not need to be completed; however, retention facility design details and sizing calculations must be included in Appendix F.

No ® This section must be completed.

This Project meets the following condition:

El
Condition A: 1) Runoff from the Project is discharged directly to a publicly -owned, operated and maintained MS4 or engineered and maintained channel, 2) the discharge is in full compliance with local land use authority requirements for connections and discharges to the MS4 (including both quality and quantity requirements), 3) the discharge would not significantly impact stream habitat in proximate Receiving Waters, and 4) the discharge is authorized by the local land use authority.

Condition B: The project disturbs less than 1 acre and is not part of a larger common plan of development that exceeds 1 acre of disturbance. The disturbed area calculation must include all disturbances associated with larger plans of development.

Condition C: The project's runoff flow rate, volume, velocity and duration for the post -development condition do not exceed the pre -development condition for the 2 - year, 24 -hour and 10 -year 24 -hour rainfall events. This condition can be achieved by, where applicable, complying with the local land use authority's on -site retention ordinance, or minimizing impervious area on a site and incorporating other Site - Design BMP concepts and LID/Site Design BMPs that assure non-exceedance of pre - development conditions. This condition must be substantiated by hydrologic modeling methods acceptable to the local land use authority.

None: Refer to Section 3.4 of the Whitewater River Region WQMP Guidance document for additional requirements.

Supporting engineering studies, calculations, and reports are included in Appendix C. 2 year — 24 hour
10 year — 24 hour
Precondition
Post -condition
Precondition
Post -condition
Discharge (cfs)

3.88 (n), 0.23(s)
0 (n),
0 (s)

10.73 (n),

0.63 (s)

10.13 (n),
0 (s)
Velocity (fps)

5.4 (n), 0.55 (s)
0 (n),
0 (s)

7.12 (n),

0.70 (s)

7.01 (n),
0 (s)
Volume (cubic ft)
1,537 (n), 602 (s)
0 (n),
0 (s)
3,560
(n),
1,178 (s)
3,360 (n) 0 (s)
Duration
(minutes)
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Whitewater River Region Preliminary WQMP
World Wildlife Museum
V. Best Management Practices
This project implements Best Management Practices (BMPs) to address the Pollutants of Concern that may potentially be generated from the use of the project site. These BMPs have been selected and implemented to comply with Section 3.5 of the WQMP Guidance document, and consist of Site Design BMP concepts, Source Control, LID/Site Design and, if/where necessary, Treatment Control BMPs as described herein.

V.1 SITE DESIGN BMP CONCEPTS, LID/SITE DESIGN AND TREATMENT CONTROL BMPs
Local Jurisdiction Requires On -Site Retention of Urban Runoff:

Yes
The project will be required to retain Urban Runoff onsite in conformance with local ordinance (See Table 6 of the WQMP Guidance document, "Local Land use Authorities Requiring Onsite Retention of Stormwater). The LID/Site Design measurable goal has thus been met (100%), and Sections V.1.A and V.1.B do not need to be completed; however, retention facility design details and sizing calculations must be included in Appendix F, and '100%' should be entered into Column 3 of Table 6 below.

No ❑ Section V.1 must be completed.

This section of the Project -Specific WQMP documents the LID/Site Design BMPs and, if/where necessary, the Treatment Control BMPs that will be implemented on the project to meet the requirements detailed within Section 3.5.1 of the WQMP Guidance document. Section 3.5.1 includes requirements to implement Site Design Concepts and BMPs, and includes requirements to address Pollutants of Concern with BMPs. Further, sub -section 3.5.1.1 specifically requires that Pollutants of Concern be addressed with LID/Site Design BMPs to the extent feasible.

LID/Site Design BMPs are those BMPs listed within Table 2 below which promote retention and/or feature a natural treatment mechanism; off -site and regionally -based BMPs are also LID/Site Design BMPs, and therefore count towards the measurable goal, if they fit these criteria.

This project incorporates LID/Site Design BMPs to fully address the Treatment Control BMP requirement where and to the extent feasible. If and where it has been acceptably demonstrated to the local land use authority that it is infeasible to fully meet this requirement with LID/Site Design BMPs, Section V.1.B (below) includes a description of the conventional Treatment Control BMPs that will be substituted to meet the same requirements.

In addressing Pollutants of Concern, BMPs are selected using Table 2 below.

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Table 2. BMP Selection Matrix Based Upon Pollutant of Concern Removal Efficiency (1) (Sources: Riverside County Flood Control & Water Conservation District Design Handbook for Low Impact Development Best Management Practices, dated September 2011, the Orange County Technical Guidance Document for Water Quality Management Plans, dated May 19, 2011, and the Caltrans Treatment BMP Technology Report, dated April 2010 and April 2008)
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V.1.A SITE DESIGN BMP CONCEPTS AND LID/SITE DESIGN BMPs This section documents the Site Design BMP concepts and LID/Site Design BMPs that will be implemented on this project to comply with the requirements detailed in Section 3.5.1 of the WQMP Guidance document.
• Table 3 herein documents the implementation of the Site Design BMP Concepts described in sub -sections 3.5.1.3 and 3.5.1.4.
• Table 4 herein documents the extent to which this project has implemented the LID/Site Design goals described in sub -section 3.5.1.1.

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Table 3. Implementation of Site Design BMP Concepts
Included
Brief Reason for BMPs
Indicated as No or N/A
Design
Concept
Technique
Specific BMP
Yes
No
N/A
Site Design BMP Concept I
Minimize Urban
Runoff,
Minimize
Impervious
Footprint, and
Conserve
Natural Areas
(See WQMP
Section 3.5.1.3)
Conserve natural areas by concentrating or clustering
development on the least environmentally sensitive portions of a site while leaving the remaining land in a natural, undisturbed condition.
❑
❑
A
Conserve natural areas by incorporating the goals of the Multi - Species Habitat Conservation Plan or other natural resource plans.
❑
❑
/1
Preserve natural drainage features and natural depressional storage areas on the site.
❑
❑
Maximize canopy interception and water conservation by
preserving existing native trees and shrubs, and planting additional native or drought tolerant trees and large shrubs. ❑
❑
\
Use natural drainage systems.
❑
❑
Existing drainage infrastructure is being
used.
/1
Where applicable, incorporate Self -Treating Areas
❑
❑
//
Where applicable, incorporate Self -Retaining Areas
❑
❑
/1
Increase the building floor to area ratio (i.e., number of stories above or below ground).
❑
❑
Proposed structure will use an existing pad.
�/
Construct streets, sidewalks and parking lot aisles to minimum widths necessary, provided that public safety and a walkable environment for pedestrians are not compromised.
❑
❑
/1
Reduce widths of streets where off-street parking is available. ❑
❑
Opportunities do not exist for this site
/1
Minimize the use of impervious surfaces, such as decorative ❑
❑
concrete, in the landscape design.

L
Other comparable and equally effective Site Design BMP
concept(s) as approved by the local land use authority (Note:

Additional narrative required to describe BMP and how it addresses site design concept).
❑
❑
//
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Table 3. Site Design BMP Concepts (continued)
Included
Brief Reason for Each BMP
Indicated as No or N/A
Design
Concept
Technique
Specific BMP
Yes
No
N/A
Site Design BMP Concept 2
Minimize
Directly
Connected
Impervious
Area
(See WQMP
Section

3.5.1.4)
Design residential and commercial sites to contain and infiltrate roof runoff, or direct roof runoff to landscaped swales or buffer areas. ❑
Roof runoff will be directed to infiltration
type BMPs
0 Drain impervious sidewalks, walkways, trails, and patios into adjacent ❑
❑
Impervious areas will be directed to
infiltration type BMPs
Alklandscaping.

Incorporate landscaped buffer areas between sidewalks and streets.

L
❑
❑
Use natural or landscaped drainage swales in lieu of underground piping or imperviously lined swales.
❑
❑
Opportunities do not exist on this site
��
Where soil conditions are suitable, use perforated pipe or gravel filtration pits for low flow infiltration.
❑
❑
Infiltration type BMPs will be used on this
site.

Maximize the permeable area by constructing walkways, trails, patios, overflow parking, alleys, driveways, low -traffic streets, and other low- traffic areas with open jointed paving materials or permeable surfaces such as pervious concrete, porous asphalt, unit pavers, and granular materials.
❑
®
P
Permeable pavements are not effective in
this area that experiences severe blowsand.

Use one or more of the following:

Rural swale system: street sheet flows to landscaped swale or gravel shoulder, curbs used at street corners, and culverts used under driveways and street crossings.

Runoff surface flows to infiltration type
BMPs
Urban curb/swale system: street slopes to curb; periodic swale inlets drain to landscaped swale or biofilter.
❑
❑
Runoff surface flows to infiltration type
A.. BMPs
Dual drainage system: first flush captured in street catch basins and yr discharged to adjacent vegetated swale or gravel shoulder; high flows connect directly to MS4s.
❑

R
Runoff surface flows to infiltration type
Other comparable and equally effective Site Design BMP concept(s) as approved by the local land use authority (Note: Additional narrative required to describe BMP and how it addresses site design concept). ❑
❑
/1
Use one or more of the following for design of driveways and private residential parking areas:

Design driveways with shared access, flared (single lane at street), or wheel strips (paving only under the tires).
❑
❑
Opportunities do not exist on this site
��
Uncovered temporary or guest parking on residential lots paved with a permeable surface, or designed to drain into landscaping. ❑
❑
Not a residential project.
��
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Table 3. Site Design BMP Concepts (continued)
Design
Concept
Technique
Minimize
Directly
Connected
Impervious
Area
(See WQMP
Section

3.5.1.4)
March 27, 2025
Specific BMP
Other comparable and equally effective Site Design BMP concept(s) as approved by the local land use authority (Note: Additional narrative required to describe BMP and how it addresses site design concept).

Included
Yes
No
N/A
Brief Reason for Each BMP
Indicated as No or N/A
Use one or more of the following for design of parking areas:

Where landscaping is proposed in parking areas, incorporate parking area landscaping into the drainage design.

Overflow parking (parking stalls provided in excess of the Permittee's minimum parking requirements) may be constructed with permeable pavement.

Other comparable and equally effective Site Design BMP (or BMPs) as approved by the local land use authority (Note: Additional narrative required describin_ BMP and how it addresses site desi! concept . 1793
® ❑
An existing parking lot is being resued.

Permeable pavements are not effective in
this area that experiences severe blowsand.
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Project Site Design BMP Concepts:

The storm water runoff will surface flow towards infiltration type retention basin BMPs. The retention basin will be designed to capture and store the calculated Design Capture Volume (DCV) Alternative Project Site Design BMP Concepts:

No alternatives to the infiltration facility have been proposed. The infiltration basin system for the disturbed area will serve as the main Site Design BMP.

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Table 4. LID/Site Design BMPs Meeting the LID/Site Design Measurable Goal March 27, 2025
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(1)

DRAINAGE

SUB -AREA
ID OR NO.
(2)

LID/SITE DESIGN BMP
TYPE*
(See Table 2)
(3)

POTENTIAL POLLUTANTS
(4)

POTENTIAL

POLLUTANTS
(5)

EFFECTIVENESS

OF LID/SITE

DESIGN BMP AT

ADDRESSING
(6)

BMP MEETS
WHICH
DESIGN
CRITERIA?
(identify as
Vamp OR QBmr)
(7)
TOTAL
AREA

OF CONCERN WITHIN

DRAINAGE SUB -AREA
(Refer to Table 1)

WITHIN SUB-

AREA CAUSING

RECEIVING
WATER

IMPAIRMENTS
(Refer to Table 1)
WITHIN

DRAINAGE

SUB -AREA
(Nearest 0.1 acre)

IDENTIFIED

POTENTIAL

POLLUTANTS
(U, L, M, HfM, H; see
Table 2)
NORTH

INFILTRATION BASIN

BACTERIA, HEAVY METALS,

NUTRIENTS, TOXIC

ORGANICS, SEDIMENT,

TRASH, OIL & GREASE

BACTERIA,

NUTRIENTS,

TOXIC ORGANICS
H
V(BMP)

3.80 SOUTH

INFILTRATION BASIN

BACTERIA, HEAVY METALS,

NUTRIENTS, TOXIC

ORGANICS, SEDIMENT,

TRASH, OIL & GREASE

BACTERIA,

NUTRIENTS,

TOXIC ORGANICS
H
V(BMP)

1.23 TOTAL PROJECT AREA TREATED WITH

LID/SITE DESIGN
BMPs (NEAREST 0.1 ACRE)

5.03 AC
* LID/Site Design BMPs listed in this table are those that completely address the 'Treatment Control BMP requirement' for their drainage sub -area.

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Justification of infeasibility for sub -areas not addressed with LID/Site Design BMPs N/A
V.1.B TREATMENT CONTROL BMPS
Conventional Treatment Control BMPs shall be implemented to address the project's Pollutants of Concern as required in WQMP Section 3.5.1 where, and to the extent that, Section V.1.A has demonstrated that it is infeasible to meet these requirements through implementation of LID/Site Design BMPs.

The LID/Site Design BMPs described in Section V.1.A of this project -specific WQMP completely address the 'Treatment Control BMP requirement' for the entire project site (and where applicable, entire existing site) as required in Section 3.5.1.1 of the WQMP Guidance document. Supporting documentation for the sizing of these LID/Site Design BMPs is included in Appendix F. *Section V.1.B does not need to be completed.

The LID/Site Design BMPs described in Section V.1.A of this project -specific WQMP do NOT completely address the 'Treatment Control BMP requirement' for the entire project site (or where applicable, entire existing site) as required in Section 3.5.1.1 of the WQMP. *Section V.1.B must be completed.

The Treatment Control BMPs identified in this section are selected, sized and implemented to treat the design criteria of VBMP and/or QBMP for all project (and if required, existing site) drainage sub- areas which were not fully addressed using LID/Site Design BMPs. Supporting documentation for the sizing of these Treatment Control BMPs is included in Appendix F.

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Table 5: Treatment Control BMP Summary
(1)

DRAINAGE

SUB -AREA
ID OR NO.
(2)

TREATMENT

CONTROL BMP
TYPE*
(See Table 2)
(3)

POTENTIAL

POLLUTANTS OF
(4)

POTENTIAL

POLLUTANTS
(5)

EFFECTIVENESS OF

TREATMENT

CONTROL BMP AT

ADDRESSING
(6)

BMP MEETS
(7)
TOTAL
AREA
WITHIN

DRAINAGE

SUB -AREA
(Nearest 0.1
acre)
WHICH
DESIGN
CRITERIA?
(Identify as

VBMP OR QBMP)

CONCERN WITHIN

DRAINAGE SUB -AREA
(Refer to Table 1)

WITHIN SUB -AREA

CAUSING

RECEIVING
WATER

IMPAIRMENTS
(Refer to Table 1)

IDENTIFIED

POTENTIAL

POLLUTANTS
(U, L, M, H/M, H; see Table
2)

TOTAL PROJECT
BMPs (NEAREST 0.1 ACRE)
0 AC

AREA TREATED WITH TREATMENT CONTROL
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V.1.C MEASURABLE GOAL SUMMARY
This section documents the extent to which this project has met the measurable goal described in WQMP Section 3.5.1.1 of addressing 100% of the project's 'Treatment Control BMP requirement' with LID/Site Design BMPs. Projects required to retain Urban Runoff onsite in conformance with local ordinance are considered to have met the measurable goal; for these instances, '100%' is entered into Column 3 of the Table.

Table 6: Measurable Goal Summary
(1)
Total Area Treated with
LID/Site Design BMPs
(2)
Total Area Treated with
Treatment Control BMPs
(3)
% of Treatment Control BMP
Requirement addressed with
LID/Site Design BMPs
(Last row of Table 4)
(Last row of Table 5)

5.03 ac

0.0 ac
100%
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V.2 SOURCE CONTROL BMPs
This section identifies and describes the Source Control BMPs applicable and implemented on this project.

Table 7. Source Control BMPs
BMP Name
Check One
If not applicable, state
brief reason
Included
Not
Applicable
Non -Structural Source Control BMPs
Education for Property Owners, Operators,
Tenants, Occupants, or Employees
❑
/1
Activity Restrictions
❑
/1
Irrigation System and Landscape Maintenance
❑
/1
Common Area Litter Control
❑
L1
Street Sweeping Private Streets and Parking Lots
❑
a
Drainage Facility Ins Dection and Maintenance
❑
r
Structural Source Control BMPs
Storm Drain Inlet Stenciling and Signage
❑
a
Landscape and Irrigation System Design
❑
r
Protect Slopes and Channels
❑
LI
Provide Community Car Wash Racks
❑
Not part of the project
design
/1
Properly Design*:

Fueling Areas
❑
0 No facilities
Air/Water Supply Area Drainage
❑
No facilities
.1
Trash Storage Areas
❑
/1
Loading Docks
❑
0 Maintenance Bays
No facilities
/1
Vehicle and Ec uipment Wash Areas
❑
No facilities
/1
Outdoor Material Storage Areas
No facilities
LI
Outdoor Work Areas or Processing Areas
No facilities
/1
Provide Wash Water Controls for Food
Preparation Areas
❑
I1
*Details demonstrating proper design must be included in Appendix F.

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5.2.1 Non -Structural Source Control BMPs

5.2.1.1 Education
Yes
The owner, as responsible party for implementing the Final WQMP, will ensure that owner's employees, operators, and managers are properly trained and attend continuing education classes.

5.2.1.2 Activity Restrictions
Yes
Certain activities within the project area may be restricted to enable the owner/operator to meet the City's water quality requirements. For example, maintenance of vehicles (which contributes to storm water contamination by oil and grease) is not authorized in this area.

Similarly, washing of vehicles and equipment shall be restricted to offsite locations which include properly designed wash racks or other areas which meet the intent of the best management practices.

5.2.1.3 Irrigation System and Landscape Maintenance
Yes
Owner shall ensure that the irrigation systems within the project site are operating properly.

Owner shall also ensure that the ground's landscaping is maintained regularly so that the project site is in compliance with all City and Coachella Valley Water District water quality requirements.

5.2.1.4 Common Area Litter Control
Yes
Owner shall ensure that employees regularly patrol the site in an effort to keep it free of litter so that the project site is in compliance with all City water quality requirements.

5.2.1.5 Street Sweeping
Yes
Owner shall ensure that the parking lot is regularly swept so that the project site is in compliance with all City water quality requirements. Streets/driveways and parking lots shall be swept at least quarterly, including just prior to start of the rainy season (October 1st). The frequency shall be no less than the frequency of street sweeping by the Co-Permittee on public streets.

5.2.1.6 Drainage Facility Inspection and Maintenance
Yes
Owner shall ensure that drainage facilities within the project area are regularly inspected (at least annually) and maintained properly so that the project site is in compliance with all City water quality requirements. At a minimum, routine maintenance of drainage facilities should take place in the late summer or early fall prior to the start of the rainy season (October 1st).

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5.2.2 Structural Source Control BMPs

5.2.2.1 MS4 Stenciling and Signage
Yes
Provide stenciling or labeling of all storm drain inlets and catch basins, constructed or modified, within the project area with prohibitive language and/or graphical icons to discourage illegal dumping.

5.2.2.2 Landscape and Irrigation System Design
Yes
The project will be designed to include native, drought -tolerant plants. These plants use less water, and help reduce the use of fertilizers and pesticides. The irrigation system will be programmable and utilize drip emitters, limiting excess irrigation runoff. The landscape and irrigation system will be designed in accordance with the City's water quality requirements and the Coachella Valley Water District's irrigation requirements.

5.2.2.3 Protect Slopes and Channels
Yes
Project plans shall include Source Control BMPs to decrease the potential for erosion of slopes.

The following design principles shall be considered, and incorporated and implemented where determined applicable and feasible by the local land use authority:
• Convey runoff safely from the tops of slopes.
• Plant slopes with native or drought tolerant vegetation. • Install energy dissipaters at the outlets of new MS4s, culverts, conduits, or channels that enter unlined channels. in accordance with applicable specifications to minimize erosion.

5.2.2.4 Provide Community Car Wash Racks
No
The project site will not include community car wash racks as part of the project design.

Washing of private vehicles and equipment is also a restricted activity.

5.2.2.5 Fueling Areas
No
Project development does not include the construction of fueling areas.

5.2.2.6 Air/Water Supply Area Drainage
No
The project site will not include air/water supply areas.

5.2.2.7 Trash Storage Areas
Yes
The project site will include trash storage areas. Trash storage (or trash enclosures) will be located on -site. Also, trash dumpsters will have attached covers and shall be leak proof. The entire trash storage surface area will be concrete.

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5.2.2.8 Loading Docks
Yes
Loading docks shall be kept in a clean and orderly condition through a regular program of sweeping and litter control and immediate cleanup of spills and broken containers. Cleanup procedures should minimize or eliminate the use of water. If washdown water is used, it must be properly disposed (containment, collection, and disposal to sanitary sewer) and not discharged to the MS4.

5.2.2.9 Maintenance Bays
No
The project site will not include maintenance bays.

5.2.2.10 Vehicle and Equipment Wash Areas
No
The project site will not include vehicle and equipment wash areas.

5.2.2.11 Outdoor Material Storage Areas
No
The project site will not Outdoor Material Storage Areas

5.2.2.12 Outdoor Work Areas or Processing Areas
No
The project site will not include outdoor work areas or processing areas.

5.2.2.13 Wash Water Areas for Food Preparation Areas
No
The project site will not include outdoor work areas or processing areas.

Appendix D includes copies of the educational materials (described in Section 3.5.2.1 of the WQMP Guidance document) that will be used in implementing the project -specific WQMP.

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V.3 EQUIVALENT TREATMENT CONTROL BMP ALTERNATIVES
The project site will not include any other treatment control alternatives.

V.4 REGIONALLY -BASED BMPS
100% of the Design Capture Volume generated on -site during storm events will be retained on - site in infiltration type retention basins.

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VI. Operation and Maintenance Responsibility for
BMPs
Appendix G of the project -specific WQMP will include copies of CC&Rs, Covenant and Agreements, BMP Maintenance Agreement and/or other mechanisms used to ensure the ongoing operation, maintenance, funding, transfer and implementation of the project -specific WQMP requirements.

Operations and maintenance (O&M) will be performed, as necessary, by the Owner, their agents, and/or their assignees. The BMPs for the project are a infiltration type retention basins designed with a capacity to store 100% of the Design Capture Volume generate during the 100 -year storm event.

Maintenance of the on -site storm drain and retention basin systems consists primarily of the removal of trash and debris, repair and removal/reinstallation of facilities if damaged or saturated by native material (due to wind and water erosion) or sediment and organic material from human activity. Any removed material must be hauled away to an approved disposal facility. See Appendix D for a recommended "Infiltration System Maintenance Plan".

Routine inspection and required maintenance of all BMPs and the site should begin immediately upon completion of construction and continue throughout the life of the project. Records of all inspection and repair/modifications shall be kept by the owner. The Owner shall be responsible for all O&M and inspections, until such time as another staff member is designated.

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(1)

ALL BMPS REQUIRING

MAINTENANCE
(2)

DESCRIPTION OF O&M
(3)

START DATE
(4)

O&M FREQUENCY
(5)
PARTY

RESPONSIBLE

FOR O&M
(6)

SELF INSPECTION AND

RECORD KEEPING

REQUIREMENTS

ACTIVITIES

EDUCATION FOR

PROPERTY OWNERS

OPERATORS, OR

EMPLOYEES

MATERIALS WILL BE

AVAILABLE TO EMPLOYEES,

MAINTENANCE CREWS AND
CONTRACTORS. PROVIDE

EDUCATIONAL MATERIALS

ON AN ANNUAL BASIS AND

UPON HIRING OF
EMPLOYEES.

AT PROJECT

COMPLETION

ANNUALLY
OWNER

SEE ATTCHED EXAMPLE OF
TRAINING / EDUCATION LOG.

RECORD TRAINING OF

EMPLOYEES

ACTIVITY RESTRICTIONS

PROVIDE ACCESS TO WQMP

FOR ALL EMPLOYEES AND

CONTRACTORS THAT

PERFORM MAINTENANCE
WORK.

AT PROJECT

COMPLETION

ANNUALLY
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG

IRRIGATION SYSTEM AND

LANDSCAPE

MANAGEMENT

INSPECT ALL COMMON

LANDSCAPE AREAS AND

REPLACE DEAD
VEGETATION. INSPECT,

ADJUST AND REPAIR
IRRIGATION SYSTEM.

UPON COMPLETION

OF LANDSCAPED
AREAS

WEEKLY DURING

REGULAR

MAINTENANCE
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG

COMMON AREA LITTER

CONTROL

INSPECT AND REMOVE ALL

LITTER AND DEBRIS

LOCATED IN ALL COMMON

AREAS, INCLUDING

STREETS, PARKWAYS AND

SIDEWALKS

AT PROJECT

COMPLETION

AS NEEDED
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG

STREET SWEEPING

INSPECT FOR SEDIMENT

DURING ROUTINE

MAINTENANCE ADJUST

FREQUENCY OF SWEEPING

OPERATIONS

PROJECT

COMPLETION

BI -MONTHLY AND

AS NEEDED
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG
March 27, 2025
1806
1-29

Whitewater River Region Preliminary WQMP
World Wildlife Museum

DRAINAGE FACILITY

PROTECTION

INSPECT ALL CATCH BASINS

AND STORM DRAIN PIPES,

REMOVE LITTER DEBRIS

AND ANY LIQUIDS
UPON

INSTALLATION OF

STORM DRAIN

SYSTEM ADDITIONS

QUARTERLY AND

AFTER A

QUALIFYING RAIN
EVENT OF 0.5"
/24HRS
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG

LANDSCAPE AND

IRRIGATION SYSTEM
DESIGN

INSPECT AND REPAIR

LANDSCAPE IRRIGATION
TIMERS. INSPECT AND

REPAIR ALL SPRINKLER

HEADS AS NEEDED,

UPON COMPLETION

OF LANDSCAPED
AREAS
WEEKLY
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG

TRASH STORAGE AREA

INSPECT INTEGRITY OF

STRUCTURAL ELEMENTS

REPLACE CONTAINERS

WHEN NEEDED

AT PROJECT

COMPLETION

MONTHLY AND AS
NEEDED
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG

RETENTION BASIN

INSPECT AND REMOVE

LITTER AND DEBRIS,

MAINTAIN LANDSCAPE,

REMOVE DEAD VEGETATION

AT PROJECT

COMPLETION

QUARTERLY

DURING DRY

SEASON, MONTHLY

DURING RAINY
SEASON
OWNER

SEE ATTACHED EXAMPLE OF

BMP OPERATION AND

MAINTENANCE LOG
March 27, 2025
1807
1-30

Whitewater River Region Preliminary WQMP
World Wildlife Museum
VII. Funding
Source funding and long term funding of operations and maintenance of the project BMP will be provided by the Owner, their agents, and/or assignees. Funding will be addressed in a covenant agreement entered into between City of Rancho Mirage and the Owner before approval of the Final WQMP.

March 27, 2025
1808
1-29

Whitewater River Region Preliminary WQMP
World Wildlife Museum
Appendix A
Conditions of Approval
Planning Commission Resolution
Dated
1809

Whitewater River Region Preliminary WQMP
World Wildlife Museum
Appendix B
Vicinity Map, WQMP Site Plan, and Receiving Waters Map
1810

FRANK SINATRA DR
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NOT TO SCALE
1811

WORLD WILDLIFE MUSEUM

PRELIMINARY WOMP PLAN - EXISTING CONDITION
/ 1 , ( EXISTING STORM DRAIN
I�
APN: 689-040-017

EXISTING CURB INLET CATCH BASIN
(TO BE REMOVED AND REPLACED)
264.54TC
263.71 TG

OUTFLOW (VIA STORM DRAIN) I

EXISTING PARCEL LINE
APN: 689-040-027
(oFF-sITE)
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[EXISTING RAISED MEDIAN
APN: 689-040-023
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HIGHWAY 111
(EXISTING)

GRAPHIC SCALE
SCALE 1"=30'
NORTH
AREA=3.80AC
L(L)=436FT
UPSTREAM ELEV=356FT
DOWNSTREAM ELEV=264.5FT
FRACTION SOIL TYPE A=0.73
FRACTION SOIL TYPE D=0.27
RUNOFF COEFFICIENT (C)=0.62
2 YR.-24 HR. FLOWRATE=3.88CFS
10 YR.-24 HR. FLOWRATE=10.73CFS
l.
(4
SOUTH
AREA=1.23AC
L(L)=320FT
UPSTREAM ELEV=329FT
DOWNSTREAM ELEV=267FT
FRACTION SOIL TYPE A=0.62
FRACTION SOIL TYPE D=0.38
RUNOFF COEFFICIENT (C)=0.35
2 YR.-24 HR. FLOWRATE=0.23CFS
10 YR.-24 HR. FLOWRATE=0.63CFS

EXISTING PROPERTY LINE

EXISTING PARCEL LINE

PRECIPITATION
2 YR.-1 HR.=0.4551N
100 YR.-1 HR=2.411N
SLOPE OF INTENSITY=0.57
S=0.0025
n=0.025
Q(2)=0.23 CFS , V(2)=0.55 FPS
Q(10)=0.63 CFS , V(10)=0.70 FPS
1 PL

EXISTING PERIMETER WALL
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EXISTING RIGHT OF WAY LIN
[EXISTING RAISED MEDIAN
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0 10 20 30
60 90
120
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LEGEND

SUBAREA BOUNDARY

LONGEST LENGTH OF TRAVEL

PROPOSED EARTHEN SWALE

DIRECTIONAL FLOW ARROW

SECTION A -A

NOT TO SCALE

EXISTING PERIMETER WALL
\5'
I
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(EXISTING)

EXISTING NATURAL

TERRAIN
rEXISTING CENTERLINE
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APN: 689-041-001
HIGHWAY 111
(EXISTING)
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CITY OF PALM DESERT, CALIFORNIA

PRELIMINARY WOMP PLAN - EXISTING

WORLD WILDLIFE MUSEUM
SHEET
1 OF

ENGINEERING I PLANNING I SURVEY I ENVIRONMENTAL
FOR:
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WORLD WILDLIFE MUSEUM

PRELIMINARY WQMP PLAN - DEVELOPED CONDITION
L _ _
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I

EXISTING PROPERTY LINE
APN: 689-040-017

EXISTING CURB INLET CATCH BASIN
(TO BE REMOVED AND REPLACED)

EXISTING STORM DRAIN
5U

OVERFLOW PATH
(VIA STORM DRAIN) 260.80FL

EXISTING

OVERFLOW
OUTLET

PROPOSED PRINSCO

HYDROSTOR CHAMBER
VOLUME REQUIRED=2,127 CU.FT.

VOLUME PROVIDED=2,439 CU.FT.

EXISTING PARCEL LINE
4-1 I
i
APN: 689-040-027
(oFF-sITE)

ILO VIIIKANIWII
EXISTING A.C. PAVEMENT
APN: 689-040-025
Uuui
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264.54TC
263.71 TG
259.80FL
OUTLET
272.00FF

EXISTING PARCEL LINE
S- PROPOSED A.C. PAVEMENT
APN: 689-044=6 �
[EXISTING CENTERLINE
HIGHWAY 111
(EXISTING)

PROPOSED MUSEUM
274.00FF i
(NORTH)
_61,6

EXISTING RIGHT OF WAY LINE
(EXISTING RAISED MEDIAN
1 1
4, y1 /r 1
-`-
N. r

GRAPHIC SCALE
SCALE 1"=30'
0 10 20 30
60 90
120
r
y
NORTH
DESIGN CAPTURE VOLUME (DCV) AREA=3.80AC
ON -SITE TRIBUTARY AREA = 3.14 AC
L(L)=480FT
UPSTREAM ELEV=356FT
DOWNSTREAM ELEV=264.5FT
FRACTION SOIL TYPE A=0.73
FRACTION SOIL TYPE D=0.27
RUNOFF COEFFICIENT (C)=0.71
2 YR.-24 HR. FLOWRATE=4.47CFS
10 YR.-24 HR. FLOWRATE=12.36CFS
V(BMP) REQUIRED=2069CU.FT.

V PROVIDED=2116CU.FT.
.(277,5) _
LEGEND

EXISTING PROPERTY LINE
y

SUBAREA BOUNDARY

LONGEST LENGTH OF TRAVEL

PROPOSED EARTHEN SWALE
PROPOSED A.C. PAVEMENT

DIRECTIONAL FLOW ARROW
SOUTH
AREA=1.23AC
L(L)=315FT
UPSTREAM ELEV=329FT
DOWNSTREAM ELEV=267FT
FRACTION SOIL TYPE A=0.62
FRACTION SOIL TYPE D=0.38
RUNOFF COEFFICIENT (C)=0.53
2 YR.-24 HR. FLOWRATE=1.08CFS
10 YR.-24 HR. FLOWRATE=2.99CFS
V(BMP) REQUIRED=402CU.FT.

V PROVIDED=1524CU.FT.

XISTING PARCEL LIN

PRECIPITATION
2 YR.-1 HR.=0.4551N
100 YR.-1 HR=2.41IN
SLOPE OF INTENSITY=0.57
APN: 689-041-001

PROPOSED DETENTION BASIN
VOLUME REQUIRED = 402 CU.FT.

VOLUME PROVIDED = 1524 CU.FT.

PROPOSED MUSEUM PARKING
(SOUTH)

EXISTING RIGHT OF WAY LINE
[EXISTING RAISED MEDIAN
The
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44-600 Village Court, Suite 100
Palm Desert, CA 92260
t.760.346.4750 f. 760.340.0089
TheAltumGroup.com

EXISTING CENTERLINE
HIGHWAY 111
(EXISTING)
IDCO
I000
7711
INTERSECTION: /
HIGHWAY 111 AND

MIRAGE COVE DRIVE
(NOT FOR CONSTRUCTION)
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PRELIMINARY WOMP PLAN - DEVELOPED

WORLD WILDLIFE MUSEUM
SHEET
1 OF
1813

ENGINEERING I PLANNING I SURVEY I ENVIRONMENTAL
FOR:
1 p'
Palm Springs
Rancho Mirage
Legend
Roads
Whitewater River
Tahquitz Creek
Coachella Valley Storm Channel
Reference Interstate/Highway
Geographic infonnatlon Systems
06 The Alturt Group
Strive Higher
44-600 Village Ct Suite 100, Palm Desert, CA 92260
Phone: (760) 346 - 4750 TheAltumGroup.corn
Palm Desert
Indian Wells
La Quinta
1 inch = 2.755735 miles
1814
GeoEye,
Aere RID,
Gad -Digraphic Design By Pardee Martin
Receiving Water Exhibit
N

Whitewater River Region Preliminary WQMP
World Wildlife Museum
Appendix C
Supporting Detail Related to Hydrologic Conditions of Concern (see supporting Preliminary Hydrology Report — Appendix F) 1815

Whitewater River Region Preliminary WQMP
World Wildlife Museum
Appendix D
Educational Materials
1816

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?(Xiat is stormwater rune?
Stormwater runoff occurs when precipitation
from rain or snowmelt flows over the ground.

Impervious surfaces like driveways, sidewalks,
and streets prevent stormwater from
naturally soaking into the ground.

Stormwater can pick up debris, chemicals, dirt, and other pollutants and flow into a storm sewer system or directly to a lake, stream, river, wetland, or coastal water. Anything that enters a storm sewer system is discharged untreated into the waterbodies we use for swimming, fishing, and providing drinking water.
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Polluted stormwater runoff can have
many adverse effects on plants, fish,
animals, and people.
• Sediment can cloud the water
and make it difficult or
impossible for aquatic plants to
grow. Sediment also can
destroy aquatic habitats.
• Excess nutrients can cause
algae blooms. When algae die,
they sink to the bottom and decompose
in a process that removes oxygen from
the water. Fish and other aquatic
organisms can't exist in water with low
dissolved oxygen levels.
• Bacteria and other pathogens can wash
into swimming areas and create health
hazards, often making beach closures
necessary.
• Debris —plastic bags, six-pack rings, bottles, and
cigarette butts —washed into waterbodies can choke, suffocate, or disable aquatic life like ducks, fish, turtles, and birds. • Household hazardous wastes like insecticides, pesticides, paint, solvents, used motor oil, and other auto fluids can poison aquatic life.

Land animals and people can become sick or die from eating diseased fish and shellfish or ingesting polluted water.
• Polluted stormwater often
affects drinking water
sources. This, in turn, can
affect human health and
increase drinking water
treatment costs.

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Stormwater Pollution So(utions
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Lawn care
Excess fertilizers
and pesticides
applied to lawns
and gardens wash
off and pollute
streams. In
addition, yard
clippings and
leaves can wash
into storm drains and contribute
nutrients and organic matter to streams.
• Don't overwater your lawn. Consider
using a soaker hose instead of a
sprinkler.
• Use pesticides and fertilizers
sparingly. When use is necessary, use
these chemicals in the recommended
amounts. Use organic mulch or safer
pest control methods whenever
possible.
• Compost or mulch yard waste. Don't
leave it in the street or sweep it into
storm drains or streams.
• Cover piles of dirt or mulch being
used in landscaping projects.

Septic
systems
Leaking and
poorly
maintained
septic
systems release nutrients and
pathogens (bacteria and
viruses) that can be picked up
by stormwater and discharged
into nearby waterbodies.

Pathogens can cause public
health problems and
environmental concerns.

Auto care
Washing your car and
degreasing auto parts at home
can send detergents and other
contaminants through the
storm sewer system. Dumping
automotive fluids into storm
drains has the same result as
dumping the materials directly
into a waterbody.
• Use a commercial car wash that treats or
recycles its wastewater, or wash your car on
your yard so the water infiltrates into the
ground.
• Repair leaks and dispose of used auto fluids
and batteries at designated drop-off or
recycling locations.
• Inspect your system every
3 years and pump your
tank as necessary (every 3
to 5 years).
• Don't dispose of
household hazardous
waste in sinks or toilets.

Pet waste
Pet waste can be
a major source of
bacteria and
excess nutrients
in local waters.
• When walking
your pet,
remember to pick up the
waste and dispose of it
properly. Flushing pet
waste is the best disposal
method. Leaving pet waste
on the ground increases
public health risks by
allowing harmful bacteria
and nutrients to wash into
the storm drain and
eventually into local
waterbodies.

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that po/'t&tt4 eate ' g e c6caiai will be amid
tatteated i&c a Qoca1 watnitbotly.

Resideorial ladiettpigy
Permeable Pavement —Traditional concrete and
asphalt don't allow water to soak into the ground.

Instead these surfaces rely on storm drains to
divert unwanted water. Permeable pavement
systems allow rain and snowmelt to soak through,
decreasing stormwater runoff.

Rain Barrels —You can
collect rainwater from
rooftops in mosquito -
proof containers. The
water can be used later on
lawn or garden areas.

Rain Gardens and
Grassy Swales—Specially
designed areas planted
with native plants can provide natural places for
rainwater to collect
and soak into the
ground. Rain from
rooftop areas or paved
areas can be diverted
into these areas rather
than into storm drains.

Vegetated Filter Strips —Filter strips are areas of
native grass or plants created along roadways or
streams. They trap the pollutants stormwater
picks up as it flows across driveways and streets.

Dirt, oil, and debris that collect in
parking lots and paved areas can be
washed into the storm sewer system
and eventually enter local
waterbodies.
• Sweep up litter and debris from
sidewalks, driveways and parking lots,
especially around storm drains.
• Cover grease storage and dumpsters
and keep them clean to avoid leaks.
• Report any chemical spill to the local
hazardous waste cleanup team.

They'll know the best way to keep
spills from harming the environment.

Erosion controls that aren't maintained can cause
excessive amounts of sediment and debris to be
carried into the stormwater system. Construction
vehicles can leak fuel, oil, and other harmful fluids
that can be picked up by stormwater and
deposited into local waterbodies.
• Divert stormwater away from disturbed or
exposed areas of the construction site.
• Install silt fences, vehicle mud removal areas,
vegetative cover, and other sediment and
erosion controls and properly maintain them,
especially after rainstorms.
• Prevent soil erosion by minimizing disturbed
areas during construction projects, and seed
and mulch bare areas as soon as possible.

Lack of vegetation on streambanks can lead to erosion. Overgrazed pastures can also contribute excessive amounts of sediment to local waterbodies. Excess fertilizers and pesticides can poison aquatic animals and lead to destructive algae blooms. Livestock in streams can contaminate waterways with bacteria, making them unsafe for human contact. • Keep livestock away from streambanks and provide
them a water source away from waterbodies.
• Store and apply manure away from waterbodies and in
accordance with a nutrient management plan.
• Vegetate riparian areas along waterways.
• Rotate animal grazing to prevent soil erosion in fields. • Apply fertilizers and pesticides according to label
instructions to save money and minimize pollution.

Improperly managed logging operations can result in erosion and sedimentation.
• Conduct preharvest planning to prevent erosion and lower costs. • Use logging methods and equipment that minimize soil disturbance • Plan and design skid trails, yard areas, and truck access roads to minimize stream crossings and avoid disturbing the forest floor. • Construct stream crossings so that they minimize erosion and physical changes to streams.
• Expedite revegetation of cleared
a�8
•
Uncovered fueling stations allow spills to be
washed into storm drains. Cars waiting to be
repaired can leak fuel, oil, and other harmful
fluids that can be picked up by stormwater.
• Clean up spills immediately and properly
dispose of cleanup materials.
• Provide cover over fueling stations and
design or retrofit facilities for spill
containment.
• Properly maintain fleet vehicles to prevent
oil, gas, and other discharges from being
washed into local waterbodies.
• Install and maintain oil/water separators.

RIVERSIDE COUNTY
ANIMAL SERVICES LOCATIONS:
ww w.rcdas.org
BLYTHE
16450 West Hobson Way
Blythe, CA 92225
760-921-7857

COACHELLA VALLEY ANIMAL CAMPUS
72-050 Petland Place
Thousand Palms, CA 92276
760-343-3644

RIVERSIDE COUNTY ANIMAL SERVICES
68S1 Van Buren Blvd.

Riverside, CA 92509
951-688-4340
OTHER ANIMAL SHELTERS:

ANIMAL CARE CENTER OF INDIO
45-355 Van Buren
Indio, CA 92201
760-391-4138

ANIMAL FRIENDS OP THE VALLEYS
29001 Bastron Avenue
Lake Elsinore, CA 92530
951-674-0618'
(Serving incorporated Temecula, Wildomar,
Lake Elsinore, Murrieta and Canyon Lake)
MARY S. ROBERTS PET ADOPTION CENTER
6185 Industrial Avenue
Riverside, CA 92504
951-688-4340

RAMONA HUMANE SOCIETY
690 Humane Way
San Jacinto 92586
951-654-8002
(Serving Sun City, Menifee, Romoland and Homeland)
Looking to adopt a pet?
This website is linked to many animal shelters.
www.pAtflnder.Gnrn
To report illegal storm drain disposal, call
1-800-506-2555
Or visit our website at www.rcflogd.org
E mail fcnp 1es©rcflood.org
CREATE A HEALTHY ENVIRONMENT in and around your home by following these simple pet practices. Your pet. family and neighbors will appreciate their clean comfortable surroundings.

HOUSEHOLD PETS
We all love our pets, but pet waste is a
subject everyone likes to avoid. Pet waste
left on trails, sidewalks, streets and grassy
areas can be washed into the nearest
waterway when it rains. Even if you can't
see streams or lakes
near you, rainfall
(stormwater) or
sprinkler runoff
can wash pet
waste into the
storrn drains that
carry runoff to
the nearest
streams or lakes untreated.

The risk of stormwater
contamination increases
if pet waste is allowed
to accumulate in
outdoor animal pen
areas or left on
sidewalks, streets
or driveways.

Pet waste contains
nutrients and bacteria. Nutrients can
promote the growth of algae in streams
and lakes. Algae can cause fish kills and
other environmental damage if it is
fed too many nutrients. Pet Waste also
contains e. Coli and fecal bacteria, which
can cause disease in other animals and
humans that come in contact with it
when swimming or splashing in streams
and lakes. Dogs also carry salmonella
and giardia, which can make people sick
Pet waste that is not picked up and
properly disposed can also increase vector
problems. Flies and other insects are not
only attracted to and feed on pet waste,
but can also be infected with diseases
and spread those diseases to humans and
other animals.

WHAT CAN YOU DO?
• scoop up pet waste and flush it down
the toilet or place in trash can.
• NEVER DUMP pet waste into a storm
drain or catch basin
• USE the complimentary bags or mutt
mitts offered in dispensers at local parks.
• CARRY EXTRA BAGS when walking
your dog and make them available to
other pet owners who are without.
• 'MACH Cl-IILDREN how to properly
clean up after a pet.
• TELL FRIENDS AND NEIGHBORS about
the ill effects of animal waste on the
environment. Encourage them to clean
up after pets.
can 1-800-S©6-2SSS TOLL 1 'I to report illegal dumping to the storm drain, find the dates and tirnes of ()cal 1-Iousehold 1-1azardous Waste Collection Events obtain additional information on stormwater obiems and solutions, request presentations about stormwater pollution in your child's classroom, or am about free grasscy cling and composting workshops.

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SCOOP THE POOP
Many communities have
"Scoop the Poop" laws
that govern pet
waste cleanup.

Some of
these laws
specifically
require
anyone who walks an animal off their
property to carry a bag, shovel, or
scooper. Any waste left by the animal
must be cleaned up immediately. CALL

YOUR LOCAL CODE ENFORCEMENT
OFFICE to find out more about pet
waste regulations.

OTHER WAYS TO PROTECT

YOUR PETS AND THE

ENVIRONMENT
Pets are only one of many sources that
contribute to water pollution. 1-iowever,
these other sources of water pollution
cannot only harm the environment but
a'so harm your pet Improperly used
or stored lawn fertilizers, pesticides,
soaps, grease and vehicle fluids cannot
only be washed into local streams and
lakes, these chemicals can also harm
your pet if they ingest or touch these
chemicals. Call 1-SOO-SO6-2SSS for
information regarding how to properly
dispose of household hazardous wastes
such as these. You can also keep your
pets and our environment healthy by
properly maintaining your vehicles, and
limiting use of pesticides and fertilizers
to only the amount that is absolutely
needed.

Make sure to not only protect your pets,
but to also protect your neighbors pets.

NEVER HOSE VE1-11CLE FLUIDS into
the street or gutter. USE ABSORBENT
MATERIALS such as cat litter to
clean-up spills. SWEEP UP used
absorbent materials and place it in the
trash.

HORSES AND LIVESTOCK
Fortunate enough to own a horse or
livestock? You, too, can play a part in
protecting and cleaning up our water
resources. The following are a few
simple Best Management Practices
(BMPs) specifically designed for horses
and livestock
• STORE your manure properly. Do
not store unprotected piles of
manure in places where stormwater
runoff may wash the
manure away. Place
a cover
tarp over
the pile
to keep
rainwater
out
or
• BUILD a manure storage facility to
protect your pets, property and the
environment. These structures
usually consist of a concrete pad to
protect groundwater and a short
wall on one or two sides to make
manure handling easier.
• READ the Only Rain Down the
Storm Drain brochure titled "Tips
for Horse Care" for additional
guidance and recommendations. This
brochure should be available from
your local city office or for download
at www.rcflood.org/stormwater .
• KEEP animals out of streams -
Horses and livestock can delicate in
streams causing stormwater
pollution. Livestock and horses in
streams can also disturb sensitive
habitat and vegetation, causing
additional environmental damage.

Keep livestock and horses away from
streams and use designated stream
crossings whenever possible.

MATERIAL STORAGE SAFETY TIPS
Many of the chemicals found in
barns require careful handling and
proper disposal. When using these
chemicals, be certain to -follow these
common sense guidelines:
• Buy only what you need.
♦ Treat spills of hoof oils like a
fuel spill. Use kitty litter to soak
up the oil and dispose of it in a
tightly sealed plastic bag.
♦ Store pesticides in a locked, dry,
well -ventilated area
• Protect stored fertilizer and
pesticides from rain and surface
water.

RESOURCE CONSERVATION

DISTRICTS CAN HELP
Call 1-8'00-506-2SSS for assistance
with locating a local conservation
district that can help you properly
manage your manure, re-establish
healthy pastures, control weeds, or
identify appropriate grasses for your
soils.

Thank you for
doing your part
to protect your
watershed, the
environment, your
pets and your community!

Helpful telephone numbers and links:

Riverside County Stormwater Protection Partners
Flood Control District
County of Riverside
City of Banning
City of Beaumont
City of Calimesa
City of Canyon Lake
Cathedral City
City of Coachella
City of Corona
City of Desert Hot Springs
City of Eastvale
City of Hemet
City of Indian Wells
City of Indio
City of Lake Elsinore
City of La Quinta
City of Menifee
City of Moreno Valley
City of Murrieta
City of Norco
City of Palm Desert
City of Palm Springs
City of Perris
City of Rancho Mirage
City of Riverside
City of San Jacinto
City of Temecula
City of Wildomar
(951) 955-1200
(951) 955-1000
(951) 922-3105
(951) 769-8520
(909) 795-9801
(951) 244-2955
(760) 770-0327
(760) 398-4978
(951) 736-2447
(760) 329-6411
(951) 361-0900
(951) 765-2300
(760) 346-2489
(760) 391-4000
(951) 674-3124
(760) 777-7000
(951) 672-6777
(951) 413-3000
(951) 304-2489
(951) 270-5607
(760) 346-0611
(760) 323-8299
(951) 943-6100
(760) 324-4511
(951) 361-0900
(951) 654-7337
(951) 694-6444
(951) 677-7751

REPORT ILLEGAL STORM DRAIN DISPOSAL
1-800.506.2555 or e-mail us at
[email protected]
• Riverside County Flood Control and Water
Conservation District
wwwrcflood.org
Online resources include:
• California Storm Water Quality Association
www.casqa.org
• State Water Resources Control Board
www.waterboards.ca.gov
• Power Washers of North America
www.thepwna.org
Stormwater Pollution
What you should know for...

Outdoor Cleaning
Activities and
Professional Mobile
Service Providers
Storm drain pollution prevention
information for:
• Car Washing / Mobile Detailers
• Window and Carpet Cleaners
• Power Washers
• Waterproofers / Street Sweepers
• Equipment cleaners or degreasers
and all mobile service providers
Do you know where street flows actually go?
Storm drains are NOT connected to sanitary sewer systems and treatment plants!

ONLY RAIN IN THE DRAIN
The primary purpose of storm drains is to carry rain water away from developed areas to prevent flooding. Pollutants discharged to storm drains are transported directly into rivers, lakes and streams. Soaps, degreasers, automotive fluids, litter and a host of materials are washed off buildings, sidewalks, plazas and parking areas. Vehicles and equipment must be properly managed to prevent the pollution of local waterways.

Unintentional spills by mobile service operators can flow into storm drains and pollute our waterways. Avoid mishaps. Always have a Spill Response Kit on hand to clean up unintentional spills. Only emergency Mechanical repairs should be done in City streets, using drip pans for spills. Plumbing should be done on private property. Always store chemicals in a leak -proof container and keep covered when not in use. Window/Power Washing waste water shouldn't be released into the streets, but should be disposed of in a sanitary sewer, landscaped area or in the soil. Soiled Carpet Cleaning wash water should be filtered before being discharged into the sanitary sewer. Dispose of all filter debris properly. Car Washing/Detailing operators should wash cars on private property and use a regulated hose nozzle for water flow control and runoff / prevention. Capture and dispose of waste water and chemicals properly.

Remember, storm drains are for receiving rain water runoff only.

REPORT ILLEGAL

STORM DRAIN

DISPOSAL
04-800-506-2555

Help Protect Our Waterways!
Use these guidelines for Outdoor Cleaning Activities and Wash Water Disposal Did you know that disposing of
pollutants into the street, gutter,
storm drain or body of water is
PROHIBITED by law and can result
in stiff penalties?
Best Management Practices
Waste wash water from Mechanics, Plumbers,
Window/Power Washers, Carpet Cleaners, Car
Washing and Mobile Detailing activities may
contain significant quantities of motor oil, grease,
chemicals, dirt, detergents, brake pad dust, litter
and other materials.

Best Management Practices, or BMPs as they are
known, are guides to prevent pollutants from
entering the storm drains. Each of us can do our
part to keep stormwater clean by using the
suggested BMPs below:

Simple solutions for both
light and heavy duty jobs:

DO...consider dry cleaning methods first such
as a mop, broom, rag or wire brush. Always keep
a spill response kit on site.

DO...prepare the work area before power
cleaning by using sand bags, rubber mats, vacuum
booms, containment pads or temporary berms to
keep wash water away from the gutters and storm
drains.

DO...use vacuums or other machines to
remove and collect loose debris or litter before
applying water.

DO...obtain the property owner's permission to
dispose of small amounts of power washing waste
water on to landscaped, gravel or unpaved
surfaces.

DO...check your local sanitary sewer agency's
policies on wash water disposal regulations before
disposing of wash water into the sewer. (See list
on reverse side)
DO...be aware that if discharging to landscape
areas, soapy wash water may damage landscaping.

Residual wash water may remain on paved
surfaces to evaporate. Sweep up solid residuals
and dispose of properly. Vacuum booms are
another option for capturing and collecting wash
water.

DO...check to see if local ordinances prevent
certain activities.

Do not let...wash or waste water from
sidewalk, plaza or building cleaning go into a
street or storm drain.

Report illegal storm drain disposal
Call Toll Free
1-800-506-2555
Using Cleaning Agents
Try using biodegradable/phosphate-free products.

They are easier on the environment, but don't
confuse them with being toxic free. Soapy water
entering the storm drain system can impact the
delicate aquatic environment.

When cleaning surfaces with a high-pressure
washer or steam cleaner, additional precautions
should be taken to prevent the discharge of
pollutants into the storm drain system. These
two methods of surface cleaning can loosen
additional material that can contaminate local
waterways.

Think Water Conservation
Minimize water use by using high pressure, low
volume nozzles. Be sure to check all hoses for
leaks. Water is a precious resource, don't let it flow
- ely and be sure to shut it off in between uses.
18 Screening Wash Water
Conduct thorough dry cleanup before washing
exterior surfaces, such as buildings and decks
with loose paint, sidewalks or plaza areas. Keep
debris from entering the storm drain after
cleaning by first passing the wash water through
a "20 mesh" or finer screen to catch the solid
materials, then dispose of the mesh in a refuse
container. Do not let the remaining wash water
enter a street, gutter or storm drain.

Drain Inlet Protection &
Collection of Wash Water
• Prior to any washing, block all storm drains
with an impervious barrier such as sandbags
or berms, or seal the storm drain with plugs
or other appropriate materials.
• Create a containment area with berms and
traps or take advantage of a low spot to keep
wash water contained.
• Wash vehicles and equipment on grassy or
gravel areas so that the wash water can seep
into the ground.
• Pump or vacuum up all wash water in the
contained area.

Concrete/Coring/Saw Cutting
and Drilling Projects
Protect any down -gradient inlets by using dry
activity techniques whenever possible. If water is
used, minimize the amount of water used during
the coring/drilling or saw cutting process. Place a
barrier of sandbags and/or absorbent berms to
protect the storm drain inlet or watercourse. Use a
shovel or wet vacuum to remove the residue from
the pavement. Do not wash residue or particulate
matter into a storm drain inlet or watercourse.

Saltwater Pools
• Salt water pools, although different from regular
pools, are in fact, sanitized using chlorine. A salt -
chlorine generator separates the chlorine and
sodium molecules in salt and reintroduces them
into the pool water. The same harmful effects of
chlorine still apply.
• A salt water pool is still maintained with
chemicals such as Muriatic acid, soda ash and
sodium carbonate to help keep a proper pH, total
Alkalinity, Calcium Hardness and Stabilizer
levels.

EMI
• It may be illegal to discharge salt water to land.

The salt may kill plants and the build-up of salt in
soil puts animals, plants, and groundwater at risk.

Consult your city representatives to determine
local requirements regarding salt water drainage.

NEVER put unused chemicals into the
trash, onto the ground or down a
storm drain.

IMPORTANT: The discharge of pollutants into
the street, gutter, storm drain system or waterways -
without a permit or waiver - is strictly prohibited by
local ordinances, state and federal law. Violations
may result in monetary fines and enforcement
actions.

Helpful telephone numbers and links
Guidelines for
RIVERSIDE COUNTY WATER AGENCIES:

City of Banning (951) 922-3130
City of Beaumont/Cherry Valley (951) 845.9581
City of Blythe (760) 922-6161
City of Coachella (760) 398.3502
City of Corona (951) 736-2263
City of Hemet (951) 765.3710
City of Norco (951) 270 5607
City of Riverside Public Works (951) 351.6140
City of San Jacinto (951) 654-4041
Coachella Valley Water District (760) 398-2651
Desert Water Agency (Palm Springs) (760) 323-4971
Eastern Municipal Water District (951) 928-3777
Elsinore Valley Municipal Water District (951) 674 3146 Elsinore Water District (951) 674.2168
Farm Mutual Water Company (951) 244-4198
Idyllwild Water District (951) 659-2143
Indio Water Authority (760) 391-4129
Jurupa Community Services District (951) 685.7434
Lee Lake Water (951) 658-3241
Mission Springs Water (760) 329-6448
Rancho California Water District (951) 296-6900
Ripley, CSA #62 (760) 922-4951
Riverside Co. Service Area #51 (760) 227-3203
Rubidoux Community Services District (951) 684.7580
Valley Sanitary District (760) 347-2356
Western Municipal Water District (951) 789-5000
Yucaipa Valley Water District (909) 797-5117
CALL 1-800-506-2555 to:
• Report clogged storm drains or illegal storm drain disposal from residential, industrial, construction and commercial sires into public streets, storm drains and/or water holies.
• Find out about our various storm drain pollution prevention materials. • locate the dates and times of Household Hazardous Waste (HIM) Collection Events.
• Request adult, neighborhood, or classroom presentations. • Locate other County environmental services.
• Receive grasscyding information and compiastingworkshop information Or visit our
Riverside County Flood Control and Water Conservation District wehsite at: www.rcllood.org
Other links to additional storm drain pollution information:
• County of Riverside Environmental Health: www.riveoeh.org • Suite Water Resources Control Board: wwwwaterbaards.ca.gov • California Stormwater Quality Association: www.casqa.org • United States Environmental Protection Agency (EPA):
www.epa.gov/compliance/assistance (compliance assistance information) Riverside County's, "Only Rain Do, 823
acknowledges the Bay Area Storm,
agepment Trade Association for ink,
m Prevention Prognun iTatefully
Aseciadon and the Cleaning
Swimming Pool,
Jacuzzi and
Garden Fountain

Where does the water go?
Discharge
Regulations
Maintenance &
Chemicals
Pool, Jacuzzi and Fountain wastewater and rain water
runoff (also called stormwater) that reach streets can
enter the storm drain and be conveyed directly into
local streams, rivers and lakes.

A storm drain's purpose is to prevent flooding by
carrying rain water away from developed areas. Storm
drains are not connected to sanitary sewers systems
and treatment plants!
Wastewater, from residential swimming pools, Jacuzzis,
fishponds and fountains, often contains chemicals
used for sanitizing or cleansing purposes. Toxic
chemicals (such as chlorine or copper -based
algaecides) may pollute the environment when
discharged into a storm drain system.

The Cities and County of Riverside have adopted
ordinances that prohibit the discharge of wastewater
to the street and storm drain system.

Regulatory requirements for discharging wastewater
from your pool may differ from city to city. Chlorinated water should not be discharged into the street, stonn
drain or surface waters. Check with your water agency
to see if disposal to the sanitary sewer line is allowed for pool discharges (see reverse for Riverside County
sewer agencies).

If allowed, a hose can be run from the pool Jacuzzi, or fountain to the private sewer cleanout, washing
machine drain or a sink or bathtub.

J
rrrrrrrrrrrrrrrrrru•sommrrrrrr
L
Cdoa"7.-011:f3
If you cannot discharge to the sewer, you may drain
your fountain, pool, or jacuzzi to your landscaping by
following these guidelines:

First, reduce or eliminate solids (e.g. debris, leaves or dirt) in the pool water and allow the chemicals in the
pool water to dissipate before draining the pool (this
could take up to 7 days, verify using a home pool test
kit) .

Second, slowly drain to a landscaped area away from
buildings or structures. Control the flow to prevent
soil erosion; it may take more than one day to empty.

Do not allow sediment to enter the street, gutter or
storm drain.
1824
Cleaning Filters
Filter rinse water and backwash must be
discharged to the sanitary sewer, on -site
septic tank and drain field system (if
properly designed and adequately sized), ill
or a seepage pit. Alternatively, rinse
water or backwash may be diverted to landscaped or
dirt areas. Filter media and other non -hazardous solids should be picked up and disposed of in the trash.

Algaecides
Avoid using copper -based algaecides unless absolutely
necessary. Control algae with chlorine, organic
polymers or other alternatives to copper -based pool
chemicals. Copper is a heavy metal that can be toxic
to aquatic life when you drain your pool
Chemical Storage and Handling
• Use only the amount indicated on product labels
• Store chlorine and other chemicals in a covered
area to prevent runoff. Keep out of reach of
children and pets.
• Chlorine kits, available at retail swimming pool
equipment and supply stores, should be used to
monitor the chlorine and pH levels before
draining your pool.
• Chlorine and other pool chemicals should never
be allowed to flow into the gutter or storm drain
system.

Take unwanted chemicals to a Househol
Hazardous Waste (HHW) Collection
Event. There's no cost for taking
HHW items to collection events —
it's FREE! Call 1.800.506.2555
for a schedule of HHW events in
your community.

Infiltration System
Inspection and Maintenance Checklist
Property Address: Property Owner:

Treatment Measure No.:

Inspector(s):

Date of Inspection: Type of Inspection: ❑ Monthly OP re -Wet Season ❑ After heavy runoff(1" or greater)
❑ End of Wet Season ❑ Other:

Defect
Conditions When Maintenance Is Needed
Maintenance
Needed?
(Yes/No)
Comments (Describe maintenance
completed and if needed maintenance
was not conducted, note when it will be
done)
Results Expected When Maintenance
Is Performed

1. Standing Water
When water stands in the infiltration system
between storms and does not drain within 3
days after rainfall.

There should be no areas of standing
water once inflow has ceased. Any of
the following may apply: sediment or
trash blockages removed, improved
grade from head to foot of infiltration
system.

2. Trash and Debris
Accumulation
Trash and debris accumulated in the infiltration
system.

Trash and debris removed from
infiltration system and disposed of
properly.

3. Sediment
Evidence of sedimentation in system.

Material removed and disposed of
properly so that there is no clogging or
blockage.

4. Inlet/Outlet
Inlet/outlet areas clogged with sediment or
debris, and/or eroded.

Material removed and disposed of
properly so that there is no clogging or
blockage in the inlet and outlet areas.

5. Overflow
Spillway
Clogged with sediment or debris, and/or
eroded.

Material removed and disposed of
properly so that there is no clogging or
blockage, and system is restored to
design condition.

6. Miscellaneous
Any condition not covered above that needs
attention in order for the infiltration system to
function as designed.

Meet the design specifications.
1825

Infiltration System Maintenance Plan
for
Routine Maintenance Activities
The principal maintenance objective is to prevent sediment buildup and clogging, which reduces pollutant removal efficiency and may lead to system failure. Routine maintenance activities, and the frequency at which they will be conducted, are shown in Table 1.

Table 1
Routine Maintenance Activities for Infiltration Systems No.

Maintenance Task
Frequency of Task
1 Remove obstructions, debris and trash from infiltration system and dispose of properly. Drywells may cleaned by vacuuming the upper chamber with a vacuum truck.

Monthly, or as needed after storm
events
2 Inspect system to ensure that it drains between storms, and within 3 days after rainfall. Check drywell/observation well 2-3 days after storm to confirm drainage.

Monthly during wet season, or as
needed after storm events
3 For drywells, replace filter material (and screen if it is damaged) in accordance with City of Rancho Mirage
Standard Detail No. 306 (see attached).

Monthly, or as needed after storm
events
4 Monitor drywell/observation well to confirm that system has drained during dry season.

Annually, during dry season
5 Remove any trash, grass clippings and other debris in the streets, gutters or parking area (see BMP SC -43) and
near the system perimeter. Dispose of properly.

As needed
6 Inspect infiltration system using the inspection checklist.

Monthly, or after storm events 1" or
greater, and after removal of
accumulated debris or material
Mosquito Abatement
Standing water shall not remain in the treatment measures for more than three days, to prevent mosquito generation.

Inspections
The Infiltration System Inspection and Maintenance Checklist provided shall be used to conduct inspections monthly (or as needed), identify needed maintenance, and record maintenance that is conducted.
1826

PROGRAM IMPLEMENTATION

10. PUBLIC EDUCATION AND OUTREACH

WATERSHED SPECIFIC EDUCATIONAL ACTIVITIES CONDUCTED DURING THE

REPORTING PERIOD
This section provides an overview of watershed specific education activities conducted by the Permittees. During the reporting period Appendix E contains images of most public education materials that are described in this section.

Program Overview
The Riverside County NPDES Permittees have established an ongoing watershed based public education and outreach program known as the "Only Rain Down the Storm Drain" pollution prevention program. The specific objectives of the public education program include:
• Fostering a broad public awareness of water pollution concerns; • Increasing public acceptance of pollution prevention activities to curtail everyday human behaviors that contribute to water quality problems;
• Educating/informing the general public, regulators and key local government and state decision makers on Urban Runoff conditions in Riverside County; and • Promoting stewardship of local water resources.

The "Only Rain Down the Storm Drain" program implements the public awareness objectives by focusing on three areas of pollutant reduction/prevention:
• Public Behavior;
• Proper Management of Pollutants; and
• Business Specific Education Outreach.

In addition, when attempting to make use of the finite resources available to the Public Education Program, the Permittees use these management goals to ensure that resources are used effectively:
• Focusing on pollutants of concern specific to each watershed region; • Coordinating public education efforts with adjacent storm water management programs and other related education programs to share resources, coordinate outreach efforts, and avoid costly duplication of effort; and
• Adapt public education programs and objectives, based on effectiveness analysis, to address changing MS4 programs and objectives.

Program Highlights
The public education program continues to develop changes for the better. Highlights include:
• The public education program has developed surveys in both English and Spanish. The purpose of these surveys is to evaluate the effectiveness of the public education program and are distributed to the public at community events. The results of these surveys are contained in Appendix E. Two surveys were also developed for the K-3 and 4 through 6 grades education outreach programs.

Program Implementation
Section 10 — Public Education and Outreach Page 10-1
1827

PROGRAM IMPLEMENTATION
• The public education web page continues to be revamped and improved. • The program continues to update brochures and develop outreach programs specific to the needs of the MS4.
• As part of the on -going effectiveness evaluation for the municipal training programs, testing has been incorporated into the training for evaluation of its efficiency. In addition, the overall training program was evaluated and is included in the Assessment and Enhancement Analysis of the NPDES Traning Program, August 2006 in Appendix E. • Each month, the County hosts a New Employee Orientation to an average of forty new employees. All the attendees receive "Only Rain Down the Storm Drain" materials and promotionals. The Toll Free 800 Number the message to call to report illegal storm drain disposal is incorporated into all materials.

Santa Ana Pollutants of Concern
Based on monitoring data collected to date, the current 303(d) list and discussions among the Co- Permittees, and stakeholders, the following preventative pollutants of concern were established for this watershed. More discussion on the selection of preventative pollutants of concern can be found in the monitoring section of this report. After each identified pollutant, specific BMP outreach activities are identified to address the pollutant:
• Sedimentation associated with Urban Development and Land Uses o Specific section on construction, municipal, industrial/commercial and new development training focusing on the need to address sedimentation within the watershed;
o Distribution of dust pans at public education outreach events to promote dry cleaning of drive ways and impervious surfaces;
o Construction BMP Poster;
o School/Student program incorporates education on controlling soil erosion; o The "After the Storm" and Storm Water Pollution, what you should know brochures o General Construction Activities & Outdoor Activities brochure • Nutrients and pathogens associated with Urban Development and Land Uses o Specific section on construction, municipal, industrial/commercial and new development training focusing on the need to address increased nutrients within the watershed;
o Pet Waste "What's the Scoop" brochure;
o Partnership with SGA Advertising to place pet waste information in pet stores, veterinarian clinics, kennels and pet grooming facilities; o Coordination with Riverside County Animal Control Depattiiient to distribute "What's the Scoop" and "After the Storm" brochures to families adopting pets; o The Agricultural Commissioner assist in educating on water conservation, fertilizer management and integrated pest management practices. In conjunction with County Waste Management's Composting Workshop, the "After the Storm" brochure and Program Implementation
Section 10 — Public Education and Outreach Page 10-2
1828

PROGRAM IMPLEMENTATION
Household Hazardous Waste flyer is included in the adult informational packet. o "Keep Our Water Clean" video to cover proper use of fertilizers as well as excess runoff from sprinklers;
o Earth Day mailing inserts were developed to inform residents about the problem of storm water pollution and provide simple pollution prevention activities in gardening; o Adult presentations conducted by RCRCD discussing the effects of fertilizers and pesticides on local waterways;
o The "After the Storm" brochure; and
o Construction BMP Activities brochure and poster.

In addition, the District has developed other outreach materials to focus on other pollutants and pollutant causing activities/businesses commonly associated with urban runoff. Outreach methods can be combined to focus on specific pollutants that may exist within the watershed. 24 -hour Watershed -Wide Outreach Portals
The Permittees maintain three 24-hour/7 days per week watershed wide portals to receive and distribute information regarding the "Only Rain Down the Storm Drain" program. These portals include a website, 1-800 number, and an e-mail address.

Storm Water Protection Program Website
The District operates a website that provides information on how to report illegal dumping, clogged storm drains, facility signage and worn or missing curb markers, as well as provide information on upcoming activities, opportunities for public participation in program development and general information about Urban Runoff pollution prevention techniques. The website is located at:
http://www.floodcontrol.co.riverside.ca.us/stormwater/
Almost all of the District's outreach materials have been scanned into an electronic .pdf format and are available for download. Online Order forms and phone numbers are also available to assist in obtaining information that might not be available online.

The website contains pages specific to the following target audiences:
• General Public/Residents
• Businesses
• Developers
• Contractors
• Schools and Teachers
• Kids Page
In addition the website contains links to:

Program Implementation
Section 10 — Public Education and Outreach Page 10-3
1829

PROGRAM IMPLEMENTATION
• Assist viewers in locating their watershed
• An online media library
• Materials order form
• 1-800 information to report storm drain pollution
The District tracks the number of hits to its public education website. The website was completely revamped during the previous reporting period and the web -page counter replaced this reporting period. Results of the webpage counter report are included in Appendix E.

Storm Water toll free 1-800 Hotline
On October 1994, a Toll Free "800" telephone number for reporting suspected Urban Runoff pollution and obtaining pollution prevention information was established.

1. This call line offers easy to understand instructions for connecting to County Environmental Health or Waste Management to obtain grasscycling, composting, or household hazardous waste collection dates and locations.

2. The 24 -hour Hotline also allows callers to report clogged catch basin inlets, illegal dumping and other illicit discharge violations.

3. Finally, the hotline allows people to order public education materials and/or request storm water presentations for schools or community groups. The Permittees advertise the hotline in all appropriate County telephone directories, public education outreach materials, and in other appropriate venues and locations. Callers to the hotline are given options to seek emergency services if the spill is of a suspicious origin or a safety issue.

The 1-800 line diverts callers to appropriate Permittee departments based on caller selections.

Callers requesting information on pollution collection activities are diverted to either County Environmental Health or Waste Management depending on their specific selection. Callers reporting illicit discharges are directed to County Code Enforcement, who accepts the calls and then re -directs them to appropriate Permittee Code Enforcement Departments. Calls for public education materials or presentations are directed to the district's front desk and then to the District's Public Education Staff. School presentation inquiries are directed to the Riverside County Conservation District office, who have been contracted to provide education to elementary schools in the Santa Ana Region. The specific text to the hotline is included as Exhibit A.

The provider of the 1-800 line, Riverside County Communication, tracks the number of incoming calls to the line. This tracking mechanism was discontinued during past reporting period but restored this reporting period.

Program Implementation
Section 10 — Public Education and Outreach Page 10-4
1830

PROGRAM IMPLEMENTATION
Exhibit A
"ONLY RAIN DOWN THE STORM DRAIN" POLLUTION PREVENTION PROGRAM TOLL FREE 1-800 LINE DIALOGUE
Thank you for calling the "Only Rain Down the Storm Drain" Pollution Prevention Program. To better serve the needs of our County communities, please listen carefully to the following options:

If this is an emergency, or you wish to report a significant release or threatened releases of hazardous material into the storm drain or elsewhere in the environment, please hang up and immediately Dial 911. (Si esta llamada es una emergencia o decea reportar desechos de contaminantes peligrosos en las alcantarillas o en el medio ambiente, por favor cuelge y llame 911.)
For water service connection, disconnection, or any other water utility information, call your local water service provider.

To report illegal dumping at residential, commercial, industrial or construction sites, please call Environmental Health at 951.955.8982, or press #1 to be directly connected.

For information regarding Household Hazardous Waste Collection Events, please Press #2.

To report clogged storm drains, please call your local municipal public works department. To report faded or missing "Only Rain Down the Storm Drain" storm drain markers, please press #3.

For General or specific business pollution prevention information or to receive other pollution prevention information please press #3.
(Drop Off Dialogue)
Thank you for your interest in obtaining information on storm drain pollution protection. Basic, construction, industrial, commercial and children's storm water protection outreach packets are available. For a quick response to your request, please slowly and clearly leave your name, address, city and zip code. Also state the type and quantity of the materials you are interested in receiving. Should you need additional assistance, provide your area code and phone number and someone will contact you as soon as possible.

To inquire about our free storm water classroom presentations, workshops, youth group activities and other outreach programs, please press #4.
(Drop Off Dialogue)
The "Only Rain Down the Storm Drain" public education program offers classroom presentations, workshops, youth group activities, special event opportunities and other programs. For inquiries for the Temecula or Murrieta area, please press #1 (Drops to Mission Resource Conservation District) For inquiries in all other Riverside County areas, press 2 (drops to Riverside/Corona Resource Conservation District).

For Grasscycling and composting information or workshops, please PRESS #5. (to 951.486.3200) For additional assistance regarding our storm drain pollution prevention program during regular business office hours, Monday through Thursday from 7:30 am to 5:30 pm and on Friday from 7:30 am to 4:30 pm Program Implementation
Section 10 — Public Education and Outreach Page 10-5
1831

PROGRAM IMPLEMENTATION
E-mail
The Permittees also maintain an e-mail address that can be used to report illicit discharges or request storm water related public information. The e-mail address is:

[email protected]
E -mails are received by the District's Public Information Specialist and are responded to, in most cases, within 2 business days.

Program Coordination with other Stakeholders
The "Only Rain Down the Storm Drain" program has used partnerships to leverage and increase available resources. The Permittees utilize every opportunity to work with Co-permittees, local environmental groups, and other public, private and business organizations to maximize use of existing distribution outlets, events, programs and materials. Impressions, attendance, and other measures of effectiveness relative to these programs are included in Appendix E (Public Education) of this Watershed Annual Report.

To facilitate statewide awareness of storm water public education, educate local and state decision makers, and assist in the development of more effective public education outreach programs, the District participates in the following public education committees:
• Public Information Public Participation Committee (PIPP) — A subcommittee of the California Storm Water Quality Association, and
• Western Regional Pollution Prevention Network (WRPPN) To leverage education outreach resources and coordinate public education activities with other environmental programs, the Permittees closely coordinate and/or have existing partnerships with the following entities/organizations:
• Household Hazardous Waste Information Exchange (HHWIE); This is an eGroup that provides household hazardous waste affiliates the ability to better communicate, share ideas and the latest in legislative rulings.
• Riverside -Corona Resource Conservation District (RCRCD); • Partnership to provide student education outreach in the Santa Ana and Whitewater Watersheds
• Partnership to provide adult education outreach activities in the Santa Ana and Whitewater Watersheds
• Partnership to provide support services for public education outreach activities at community events
• Mission Resource Conservation District (RCRCD);
• Partnership to provide student education outreach in the Santa Ana and Santa Margarita Watersheds
• Partnership to provide adult education outreach activities in the Santa Ana and Santa Margarita Watersheds
Program Implementation
Section 10 — Public Education and Outreach Page 10-6
1832

PROGRAM IMPLEMENTATION
o Partnership to provide support services for public education outreach activities at community events
• California Regional Environmental Education Community Network (CREEC) o A network whose mission is to develop a communication network which provides educators with access to high quality environmental education resources to enhance the environmental literacy of California students.
• Santa Ana River Watershed Clean Up Stakeholders Group in coordination with Riverside Corona Conservation District, Keep Riverside Clean and Beautiful and the California Coastal Commission's Coast. This collaboration of environmental partners support and encourage volunteers, allies and groups to gather for a day to remove trash and debris from the Santa Ana River that might otherwise flow downstream, through the river to the ocean. • In addition the "Only Rain Down the Storm Drain" program also coordinates with the following City/County departments to distribute appropriate storm water education outreach materials:
o City/County/District Front Counters
o County Waste Management
o County Public Health Department
o Agriculture Department
o County Executive Offices
o Code Enforcement
o County Parks
o Animal Control;
o Economic Development Agency
o County Assessor/Recorders Office
o Bio-terrorism
o Fleet Services
o Human Resources
o Library System
o Central Mail
■ Stamp on every piece of mail sent by the County that identifies the 1-800 Number and requests that citizens call it to report storm drain pollution. o County Safety
o County DPSS
o Transportation and Land Management
In general, brochures and promotional items are provided to these departments for distribution in public lobbies, training sessions, through customer interactions and new employee orientations.

Finally, the "Only Drain Down the Storm Drain" Program also coordinates with the following state and/or local government or business entities to distribute public education information:

Program Implementation
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PROGRAM IMPLEMENTATION
• Western Riverside Council of Governments
• Santa Ana Regional Water Quality Control Board
• Orange County Watershed & Coastal Resources Division
• Santa Ana Watershed Association
• South Coast Air Quality Management District
• Santa Rosa Plateau
• Bureau of Reclamation
• Elsinore Valley Municipal Water District
• Metropolitan Water District
• Lake Elsinore/San Jacinto Watershed Authority
• Eastern Municipal Water District
• The Water Education Center
• Rancho California Water District
• Valley Greeters
• Depaitiuent of Water Resources Southern District
• Western Municipal Water District
• Business Industrial Association (BIA)
• Caltrans
Outreach Tools to Change Public Behavior
The "Only Rain Down the Storm Drain" program conducts a wide range of outreach activities to residents, students, community groups, new home owners, homeowner associations; informing them of how their "everyday activities" may contribute to the pollution of Receiving Waters, and encouraging them to adopt alternatives that will lessen or eliminate pollution -causing behaviors.

Program efforts include providing information on pollution prevention techniques and informing residents about the proper disposal of household hazardous wastes, construction materials, used motor oil, pet waste and litter. Public education materials and media emphasize the theme that all citizens have a role to play in reducing and preventing the polluting of Receiving Waters. The goal is to present a clear and consistent message that explains the simple connections between people's everyday activities and their impacts upon Receiving Water quality.

As the public education and outreach program continues to be implemented and enhanced, the Permittees hope to broaden public awareness of Urban Runoff quality problems, promote proper disposal of household hazardous waste and motor oil, encourage illegal discharge reporting, foster good stewardship of Receiving Waters, and take personal responsibility for their actions in preventing pollution.

While public education outreach at events indicates that most people are willing to act in an environmentally responsible manner if given simple ways to change their behavior to avoid polluting our water bodies; most are unaware of the sources of pollution from everyday urban land use. The "Only Rain Down the Storm Drain" pollution prevention program using various media forms educates the County's population about modified behaviors to prevent storm water pollution by focusing on residents, general public, students, home gardeners, do-it-yourselfers, mobile businesses, etc.

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PROGRAM IMPLEMENTATION
Direct Outreach Methods
The "Only Rain Down the Storm Drain" program interfaces directly via program staff, or through contracts and partnerships, to the public through attendance at community events, school education programs, adult education programs and/or by providing classroom based training. Specific outreach activities, segregated by target audiences, are described below.

General Community Outreach
The "Only Rain Down the Storm Drain" program participates in various community events to ensure that our message is delivered to the largest possible municipal audience. At these community events, surveys, to assess overall program effectiveness, have been used.

In addition, the "Only Rain Down the Storm Drain" program has partnered with County Environmental Health to ensure that a storm drain pollution prevention material is available and distributed at all Household Hazardous Waste and Antifreeze, Batteries, Oil and Paint Collection Centers and/or Events throughout each of the Watershed Region's within Riverside County. These events provide free disposal sites for receiving common pollutants that can impair Receiving Waters.

Elementary School Outreach
Elementary (K-6)
The Riverside County Resource Conservation District (RCRCD) continues to provide a variety of K-6 education programs for the "Only Rain Down the Storm Drain" Program. The K-6 education program includes materials such as the Storm Water Pollution Prevention Patrol workbook, the Fancy Fin hands-on classroom presentation and accompanying coloring book, various word match and crossword activity sheets and videos. A second story line featuring Fancy Fin and her friend Phinnious J. Green (a Pacific Tree Frog) educate students about point and non -point pollution and their effects on the environment and other creatures in the watershed. School materials are offered to all public and provide schools in the Santa Ana Watershed Region, as well as to youth groups such as the boy and girl scouts.

Secondary Schools
A video entitled "How to Conduct an Environmentally Friendly Car Wash and Make Money Too" was developed for the "Car Wash Challenge" program. An accompanying flyer is also used which informs students/groups of the potential storm water problems generated from car wash runoff, and provides practical BMPs to minimize or eliminate contaminated runoff. The original focus of the program was high school clubs. However, after contacting several high schools, it was discovered that car washing fundraisers are relatively rare and revenue deficient in comparison with other high Program Implementation
Section 10 — Public Education and Outreach Page 10-9
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PROGRAM IMPLEMENTATION
school fund raising activities. Nevertheless, church groups, scout troops and other organizations do conduct car wash fundraisers. Thus, the scope of the Car Wash Challenge program has been expanded to include these additional fundraising organizations.

Adult Outreach
Valley Greeters is a "Welcoming Wagon" business taking discount coupons, product samples and general vicinity information door to door to new residents and homeowners to the Temecula, Murrieta and Lake Elsinore area. For the past four years, Valley Greeters has included our MS4 materials, (After the Storm; What's the Scoop; Pool, Spa and Fountain Maintenance and HHW Collection Schedule). This information is accompanied with a handy full size dustpan, shop cloth and vehicle air freshener. Every material and promotional is clearly imprinted with the 1-800 Toll Free number for reporting illegal discharges into the storm drain. Young family members receive a copy of Fancy Finn and box of crayons. This business is solely dependent on the status of the construction economy and by January, 07 experienced a considerable slowdown.

The "Only Rain Down the Storm Drain" program contracts with the Riverside/Corona Resource Conservation District for public outreach. Storm Water Pollution Prevention presentations are given to community groups who call and request such services.

Steve Groner & Associates has been retained to prepare and present workshops at major home improvement stores throughout Riverside County. The workshops include passing out reading material regarding targeted BMPs to the public through established corporate partnerships (paint, hardware, home show coordinators, home improvement, garden centers, nurseries and pet stores).

All commercial employees are informed about storm water impacts that could occur from the improper application of all types of home and garden hazardous chemicals. In turn, the employees are then able to share with customers on the proper use and disposal of products that are potential storm drain pollutants. Attendees at the workshop receive "Only Rain Down the Storm Drain" promotionals to help emphasize the storm water pollution prevention message. Fixed advertising tools such as counter displays, tear sheets have been placed throughout to attract attention.

Brochures
Residential_ After the Storm; Storm Water Pollution and the Solutions, Household Hazardous Waste Collection Schedule, Outdoor Activities; Swimming Pool, Jacuzzi and Fountain Maintenance; and What's the Scoop (Pet waste).

Outreach Materials
In addition to the brochures mentioned above, the program utilizes other effective outreach materials such as, magnets, a billboard ad, videos, newspaper supplements, flyers, door knob hangers, calendars, promotionals items, workbooks, curriculum, shop rags, shelf talkers, tear sheets, posters and print ads to cultivate interest in the program.

Program Implementation
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PROGRAM IMPLEMENTATION
A door hanger is also being utilized to help address problem discharges that are commonly observed in residential settings. The door hanger notifies the recipient that a problem discharge was observed flowing in to the street and offering help by following recommended pollution prevention activities. The door hanger is provided to all cities and is used by various County departments and the NPDES staff when conducting field or site activities/inspections.

Mailing Inserts/Slugs
The "Only Rain Down the Storm Drain" Pollution Prevention Program encourages advertising the County's Household Hazardous Waste Collection events via the use of mail inserts. The inserts are included in various utility bills and special notice mass mailings.

In addition, the "Only Rain Down the Storm Drain" program has coordinated with the County Mail Department to have the postage meter carry the "Only Rain Down the Storm Drain" message and the 1-800 Toll Free number to report an illegal storm drain disposal or spill. In 05/06, over 5,000,000 pieces of outgoing County mail were stamped with the message. In November of 06, the postage system was replaced with more sophisticated postage meter units but the cost of the ink in the new system far exceeded the costs and benefits from other media options and therefore this media venue was dissolved.

Media Outreach
The "Only Rain Down the Storm Drain" Program continues to utilize various mass media to reach the public and promote the storm water pollution prevention. Special newspaper inserts, fliers, and advertisements help increase public awareness of storm water pollution and environmental protection.
• Our Sixth Edition of a four -page insert called the National Pollution Prevention or P-2, (National Pollution Prevention Week recognization), was distributed Countywide through the PennySaver. The insert included topics on proper disposal of pet waste, pesticide alternatives, motor oil recycling, grass -cycling, pool and spa best management practices, storm drain marking program, storm water school presentations, general storm drain pollution protection, business storm water pollution information, household hazardous waste (HHW) collection events, syringe disposal program, composting workshops and motor oil specific recycling locations. The insert is released to over 650,500 Riverside County homes generating an increase of calls to the 800 Toll Free Hotline and District IC/ID investigations.

Cooperative Used Oil Program
The Western Riverside Council of Governments (WRCOG) is responsible for administering the Used Oil Block Cycle Grant on behalf of ten cities within WRCOG's boundaries. These cities include: Banning, Beaumont, Canyon Lake, Lake Elsinore, Murrieta, Norco, Perris, Riverside, San Jacinto and Temecula.

Program Implementation
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PROGRAM IMPLEMENTATION
The objective of the Used Oil Block Grant is to make it convenient for Do-It-Yourselfers (DIYers) to recycle their used oil and to make it easy for them to fmd a Certified Center accepting used oil.

In order for these centers to be certified, they need to apply for certification with the California Integrated Waste Management Board (CIWMB). As a grant recipient, WRCOG contacts non - certified centers in the jurisdiction to interest them in becoming certified used motor oil collection center. The goal is to see a significant decrease in the amount of illegally dumped motor oil by adding more oil collection centers within close proximity to users.

Through the same grant funding source, WRCOG also provides used oil containers for distribution to DIYers who need proper containers for automotive fluids. Through WRCOG efforts, all certified centers in the County are in compliance to state and local mandates.

The Storm Drain Pollution Prevention Program assists WRCOG's efforts by making available our MS4 information and supporting promotionals for distributions to their targeted groups.

At various venues, WRCOG staff obtain participant responses to a ten question survey. The survey examines the public's understanding on:
o used oil recycling,
o used oil drop-off locations,
o curbside programs, and other local recycling programs.

The program also maintains an English and Spanish 800 hotline that can be used to get answers to any recycling question a resident may have regarding, "where the nearest Certified Center is located?" and "where can I find a used oil container?". The phone number is printed on all distributed materials including the oil containers.

Cleanest County in the West Program
Through another grant funding source, WRCOG created the "Cleanest County in the West" program to address issues relating to litter and illegal dumping. The program was designed to assist jurisdictions in meeting the 50% diversion goals mandated by Assembly Bi11 939. AB 939 was a state mandate signed in 1989 that required cities to reduce their waste by 50% by the Year 2000.

The core of the program is the elementary school assembly. WRCOG partners with Radio Disney AM 1290 to present an interactive and informational presentation for children in grades K -6th. This program continually reinforces the responsibility of everyone to recycle and pick up litter.

WRCOG at the end of the assembly gives the school two recycling containers for the collection of cans and bottles. During the 06/07 school year, over 18,000 students and 600 teachers have experienced the assembly. Each student receives an environmental activity book and an application to join the Riverside County Kids Recycle Club where they will receive a quarterly newspaper. This club has over 200 members.

Program Implementation
Section 10 — Public Education and Outreach Page 10-12
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PROGRAM IMPLEMENTATION
Like the "Only Rain Down the Storm Drain" Program which promotes litter reduction and recycling throughout the Santa Ana Region, WRCOG also participates in events to promote litter reduction and beverage container recycling. These events gives staff an opportunity to assess how informed the local community is regarding recycling and also allows us to distribute brochures and informational flyers that will assist people in finding the nearest recycling center. During these events promotional items made from recycled content are also given out to show examples on how used items such as money can be recycled into new things such as a pencil, a promotional product first used by the "Only Rain Down the Storm Drain" Program. This particular promotional item especially increases the interest of the people visiting out booth and demonstrates how almost anything can be recycled and reused.

Outreach tools specific to Business Specific
The "Only Rain Down the Storm Drain" Program conducts a wide range of outreach activities to businesses; informing them of how their "everyday activities" may contribute to the pollution of Receiving Waters, and encouraging them to adopt alternatives that will lessen or eliminate polluting -causing activities. Program efforts include providing information on pollution prevention techniques and informing businesses about the proper disposal of wastes. Public education materials and media emphasize the theme that all businesses have a role to play in reducing and preventing the polluting of Receiving waters. The goal is to present a clear and consistent message that explains the simple connections between a business' everyday activities and their impacts upon Receiving Water quality.

Originally, the business education program mainly consisted of the development and distribution of formal BMP guidance and outreach to business associations. The program has now expanded to include direct outreach to businesses through classroom formats, advertising in business trade papers and providing exhibits at various business specific symposiums.

Discussion of the current Business Specific Outreach tools implemented by the Permittees are discussed below.

Direct Business Outreach Activities
The "Only Rain Down the Storm Drain" Program partners with various entities to provide training and education. Currently, the District has allowed AEI-CASC Engineering, a consultant who provides the Permittees internal education programs to train developers and consultants regarding the new WQMP/SUSMP requirements for Riverside County. The District has partnered with Riverside/Corona Resource Conservation District, to develop a Water Quality Design class that focuses on sub -regional solutions and low impact development. This class was offered for the first time through UCR extension in October 2005. Additionally, the District presented at Construction Storm Water Compliance Workshop hosted by the Building Industry Association of Southern California (BIA/SC) on March 22, 2006. The workshop focused on state and municipal construction requirements for contractors, developers, and consultants.

Program Implementation
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PROGRAM IMPLEMENTATION
Through the Compliance Assistance Program (CAP), a partnership with County Environmental Health restaurants and businesses that handle hazardous wastes are reviewed for potential storm water impacts from their activities. Each business is provided with storm drain pollution prevention public education outreach information specific to their activities.

Steve Groner Associates has been retained to prepare and present workshops at major home improvement stores throughout Riverside County. The workshops include a handout educating the store's employees about storm water impacts that could occur from improper application of paint, pesticides or fertilizers. Attendees at the workshop also receive "Only Rain Down the Storm Drain" information and promotionals to help highlight the storm water protection message.

Employees are then able to share with customers the proper use and disposal of products that are potential storm drain pollutants. Point of purchase displays, tearsheets, and counter displays have been installed at strategic locations to educate the public directly.

Each new business trade in Riverside County that is listed in the Inland Business Press newspaper is provided with an "Only Rain Down the Storm Drain" Pollution Prevention packet.

Brochures
Commercial: After the Storm; Food Facilities; Outdoor Cleaning Activities and Non -Point Source Discharges; Automotive Maintenance & Car Care. Note: (Staff is revising the Outdoor Activity brochure to include broader examples of urban pollution causing activities such as, power washers and mobile vehicle maintenance operators).

Industrial: After the Storm; Outdoor Cleaning Activities and Non -Point Source Discharges; and Your Facility May Need a Storm Water Permit.

Construction: After the Storm; Outdoor Cleaning Activities and Non -Point Source Discharges; General Construction & Site Supervision The revision to the construction brochure is pending the finalization of the construction permit.

Posters
BMP posters for automotive, food service establishments (available in Spanish) and construction employees are available. The posters address activities associated with the automotive repair industry, and the food/restaurant industry that may pose a threat to water quality. There are also two new posters for the Fueling Stations and Service Bay Service centers. All the posters recommend storm water BMPs and are designed to serve as informative and attractive visual reminders for employees.

Media Outreach
In March, 07, a full -page ad was placed in the Inland Business Press newspaper to draw the attention of Inland Empire businesses whose urban runoff activities might be threatening local Program Implementation
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PROGRAM IMPLEMENTATION
water quality. The ad also provided links to the District's and CASQA's website for more detailed BMP information.

Supplemental Environmental Projects (SEP)
In an effort to change the behaviors of large storm drain pollution prevention offenders in the County, Environmental Health established a Supplemental Environmental Project (S.E.P.). The S.E.P. requires from the violator a monetary fine and/or the violator's cooperation for the development of a public education tool on the effects of polluted urban run off. S.E.P.'s to date include:
• A Downs Energy SEP project resulted in the development of a billboard ad that has been greeting commuters traveling Westbound on the 60 Freeway lanes.

Outreach tools specific to Pollutants
"Only Rain Down the Storm Drain" Pollution Prevention Program conducts a wide range of outreach activities focusing on reduction of certain pollutants in the receiving waters. These outreach activities focus on sources of those pollutants whether it is residential, business, municipal or some other state or federal source. Education materials explain how "everyday activities" of potential sources may contribute to the pollution of receiving waters, and encourage the sources to adopt alternative approaches to pollutant management that will lessen or eliminate polluting - causing activities. Program efforts include providing information on pollution prevention techniques and informing sources about the proper disposal of pollutants. Public education materials and media emphasize the theme that all citizens/businesses have a role to play in reducing and preventing the polluting of receiving waters. The goal is to present a clear and consistent message that explains the simple connections between a business' everyday activities and their impacts upon receiving water quality.

Each subsection that follows identifies how existing outreach materials previously described address specific potential pollutant sources in the watershed.

Use of pesticides, fertilizers, and herbicides
A. The Riverside County Agricultural Commissioner's Pesticide Applicator's License renewal information package includes materials on the proper use of pesticides and offers information on training workshops. The license renewal process requires continuing education of applicants and detailed record keeping of pesticide applications. Municipal employees that are responsible for the application of pesticides are encouraged to obtain and maintain credentials as Certified Applicators and/or licensed Pest Control Advisors.

B. The "Home Garden Care" materials are being revised to draw and attract the interest of the general public and amateur gardener. The new materials will include Integrated Pest Management and plant selection and materials from the State Water Resource Control Board, Central Contra Costa IPM Outreach Program, University of California and The Program Implementation
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Orange County Storm Water Program are being used. All the materials selected offer alternatives to using chemically based pesticides, herbicides and fertilizers.

C. The "Keep Our Water Clean" video covers proper use of pesticides, fertilizers and herbicides as well as excess runoff from sprinklers.

D. The September annual "Only Rain Down The Storm Drain's" participation in the National Pollution Prevention Week insert informs residents about the problem of storm water pollution and provides simple pollution prevention activities in gardening.

E. The "Only Rain Down The Storm Drain" adult presentations conducted by RCRCD discusses the effects of pesticides and fertilizers on local waterways. The materials distributed following the presentation promote alternatives to pesticide use in the yard and garden.

F. The 2006 Environmental Calendar included a wide array of storm water protection information. It is designed to attract the adult audience by listing best management practices, scheduled special events, household hazardous waste collection sites, used oil collection sites, composting workshops, citywide clean ups, and each of the watersheds along with geographical information. Throughout the calendar the main message is "Only Rain Down The Storm Drain" and the hotline number to call for additional home garden care information.

G. Steve Groner Associates has been retained to prepare and present employee workshops at major home improvement stores throughout Riverside County. This information is then passed on to the public via the shelf talkers accessible to the public or when an employee is addressed with a question. The workshops include information on BMPs the public should be aware of for pesticide and fertilizer application, use, and storage.

Program Implementation
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Whitewater River Region Preliminary WQMP
World Wildlife Museum
Appendix E
Soils Report
1843

PRELIMINARY PARAMETERS

GROUND MOTION PARAMETERS
Sladden has reviewed the 2022 California Building Code (CBC) and ASCE7-16 and developed ground motion parameters for the subject site. The project Seismic Design Maps are summarized in the following table and included within Appendix C. The project Structural Engineer should verify that all design parameters provided are applicable for the subject project.

TABLE

GROUND MOTION PARAMETERS
Latitude / Longitude

33.7662/ -116A439
Risk Category
II
Site Class
C
Code Reference Documents
ASCE 7-16; Chapter 11 & 21
Description
Type
Map Based
MCER Ground Motion (0.2 second period)
Ss

1.5 MCER Ground Motion (1.0 second period)
Si

0.613
Site -Modified Spectral Acceleration Value
SMs

1.8 Site -Modified Spectral Acceleration Value
SMi

0.858
Numeric Seismic Design Value at 0.2 second SA
SDS

1.2 Numeric Seismic Design Value at 1.0 second SA
SD1

0.572
Site Amplification Factor at 0.2 second
Fa

1.2 Site Am Dlification Factor at 1.0 second
Fv

1.4 Site Peak Ground Acceleration
PGAM

0.788
Cut/Fill S10es. Where fill is required on slopes steeper than five horizontal to one vertical (5H:1V), all weak soil should be removed and these areas should be positively benched horizontally into bedrock in conjunction with fill placement. Keyways will be required at the toe of all fill embankments. The keyways should be excavated at least two (2) feet into competent bedrock as measured on the downhill side. The height of the benches and keyway dimensions should be determined by the geologist in the field during grading.
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CONVENTIONAL SHALLOW SPREAD FOOTINGS
All footings should be founded entirely upon properly compacted engineered fill soil and should have a minimum embedment depth of 12 inches measured from the lowest adjacent finished grade. Continuous and isolated pad footings should have minimum widths of 12 inches and 24 inches, respectively.

Continuous and isolated pad footings supported upon properly compacted engineered fill soil may be designed using allowable bearing pressures of 1800 and 2000 pounds per square foot (psf), respectively.

Allowable increases of 200 psf for each additional 1 foot of width and 250 psf for each additional 6 inches of depth may be used if desired. The maximum allowable bearing pressure should be 3000 psf. The allowable bearing pressures apply to combined dead and sustained live loads. The allowable bearing pressures may be increased by one-third when considering transient live loads, including seismic and wind forces.

Based on the recommended allowable bearing pressures, the total static settlement of the shallow footings is anticipated to be less than 1/2 inch, provided foundation preparations conform to the recommendations described in this report. Static differential settlement is anticipated to be approximately one-half of the total settlement for similarly loaded footings spaced up to approximately 50 feet apart.

Lateral load resistance for the conventional shallow spread footings will be developed by passive pressure against the sides of the footings below grade and by friction acting at the base of the footings. An allowable passive pressure of 275 psf per foot of depth may be used for design purposes. An allowable coefficient of friction 0.45 may be used for dead and sustained live loads to compute the frictional resistance of the footing placed directly on compacted fill. Under seismic and wind loading conditions, the passive pressure and frictional resistance may be increased by one-third.

All footing excavations should be observed by a representative of the project geotechnical consultant to verify adequate embedment depths prior to placement of forms, steel reinforcement or concrete. The excavations should be trimmed neat, level and square. All loose, disturbed, sloughed or moisture -softened soils and/or any construction debris should be removed prior to concrete placement. Excavated soil generated from footing and/or utility trenches should not be stockpiled within the building envelope or in areas of exterior concrete flatwork. All footings should be reinforced in accordance with the project Structural Engineer's recommendations.

SLABS -ON -GRADE
To provide uniform and adequate support, concrete slabs -on -grade must be placed on properly compacted engineered fill soil as outlined in the previous sections of this report. The slab subgrade should remain near optimum moisture content and should not be permitted to dry prior to concrete placement. Slab subgrade should be firm and unyielding. Disturbed soil should be removed and replaced with engineered fill soil compacted to a minimum of 90 percent relative compaction.

Slab thickness and reinforcement should be determined by the Structural Engineer. We recommend a minimum slab thickness of 4.0 inches and minimum reinforcement of #3 bars at 18 inches on center in both directions. All slab reinforcement should be supported on concrete chairs to ensure that reinforcement is placed at slab mid -height. Final floor slab design and reinforcement should be determined by the Structural Engineer.
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Slabs with moisture -sensitive surfaces should be underlain with a moisture vapor retarder consisting of a polyvinyl chloride membrane such as 10 -mil visqueen, or equivalent. All laps within the membrane should be sealed and at least 2 inches of clean sand should be placed over the membrane to promote uniform curing of the concrete. To reduce the potential for punctures, the membrane should be placed on a pad surface that has been graded smooth without any sharp protrusions. If a smooth surface can not be achieved by grading, consideration should be given to placing a thin leveling course of sand across the pad surface prior to placement of the membrane.
1846

Whitewater River Region Preliminary WQMP
World Wildlife Museum
Appendix F
Structural BMP and/or Retention Facility Sizing Calculations and Design Details
1847

WORLD WILDLIFE MUSEUM

RANCHO MIRAGE, CA

PRELIMINARY HYDROLOGY REPORT
PREPARED FOR:

PREST VUKSIC GREENWOOD ARCHITECTS
44-530 SAN PABLO AVENUE, STE 200
PALM DESERT, CA 92260
PREPARED BY:
as TheAltumGroup
44-600 VILLAGE COURT, SUITE 100
PALM DESERT, CA 92260
(760) 346-4750
MARCH 27, 2025
Pre are+ Un er the Supervision of:

Expiration Date: December 31, 2026
1848

World Wildlife Museum

PRELIMINARY HYDROLOGY REPORT
TABLE OF CONTENTS:

I PROJECT DESCRIPTION

II DESIGN METHODOLOGY

III DESIGN CAPTURE VOLUME CALCULATIONS

IV RUNOFF VOLUME CALCULATIONS

V RUNOFF DISCHARGE CALCULATIONS

VI RUNOFF VELOCITY CALCULATIONS

VII APPENDIX
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I. PROJECT DESCRIPTION
This report was prepared in support of the World Wildlife Museum submittal. The purpose of this preliminary hydrology report is to analyze and compare the drainage patterns for existing and proposed development conditions, to show that the project meets MS4 permit requirements.

The proposed project, `World Wildlife Museum', is located at 69934 CA State Highway 111, Rancho Mirage, CA 92270 on a 6.78 acre site. Project activities consist of the construction of the World Wildlife Museum, a commercial museum development that will occupy a portion of Parcel 1 of Parcel Map No. 8674 (689-040-025), Parcel 2 of Parcel Map No. 8674 (689- 040-023) and Lot 88, R.M. Annex No 2 (689-040-028). Construction activities will disturb approximately 3.2 acres of the 6.78 acre site.

Under existing conditions, the site is partially developed with a parking lot. The existing parking lot served a previous commercial building located on Parcel 2 which has been completely demolished. Existing drainage is designed to surface flow to a low point located in the northeasterly portion of the parking lot toward an existing combination curb inlet/grate catch basin that collects runoff in a sump condition and directs flow into an existing storm drain pipe designed to convey runoff off -site toward the existing Whitewater Evacuation Channel (receiving water) located nearby, to the northeast. Lot 88, R.M. Annex No. 2 (689- 040-028) is located at the southerly end of the project boundary, is currently vacant and surface flows over pervious ground cover in a southeasterly direction toward Mirage Cove Drive, and off -site within public right of way and ultimately into Whitewater Evacuation Channel to the east.

Under post development conditions, the existing parking lot (Parcels 1 &2) will be improved and re -purposed, and a new museum building will be constructed and new separate overflow parking facilities will be constructed on Lot 88. Storm runoff generated on improved portions of Parcel 1 and Parcel 2 will continue to flow to the low point of the existing parking lot and into a new combination collection basin and underground storage system designed to replace the existing curb inlet. Storm runoff generated on the overflow parking improvements within Lot 88 will surface flow toward the east into a new surface detention basin.
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H. DESIGN METHODOLOGY AND CALCULATIONS
Developments south and southwest of the Whitewater Evacuation Channel within City of Rancho are required to comply with MS4 permit WQMP treatment requirements, but are not required to retain the runoff generated during the 100 year design storm event. The World Wildlife Museum project will collect and store runoff underground (Parcels 1 & 2) and in a surface retention basin (Lot 88) in a manner that captures and treats the Design Capture Volume (DCV) and ensures that flowrates, velocities and volumes leaving the site under the proposed condition do not exceed those under the existing condition. Flows exceeding the storage capacity of the new on -site storage facilities will leave the project site, and continue to flow toward the Whitewater Evacuation Channel as they do under the existing condition.

1.) The Water Quality Management Plan (WQMP) Design Capture Volume (DCV) is calculated using worksheets provided by Riverside County Flood Control and Water Conservation District for Stormwater Quality Best Management Practices for the Riverside County Whitewater River Region.

2.) Riverside County Flood Control District Synthetic Unit Hydrograph methods are used to quantify the runoff volumes generated for the pre and post development site conditions during the 2 year -24 hour and 10 year -24 hour storm events.

3.) Flowrates (Q) generated for the pre and post development site conditions during the 2 year -24 hour and 10 year -24 hour storm events are calculated using CivilD rational method software.

4.) Flow velocities for the pre and post development site conditions during the 2 year -24 hour and 10 year -24 hour storm events are calculated using manning's equation for open channel flow and flowrate results listed in this report

DESIGN CRITERIA
The following Riverside County Flood Control District (RCFCD) parameters were used in the preparation of the analyses:
• 2 year —1 hour Precipitation
• 2 year — 3 hour Precipitation
• 2 year — 6 hour Precipitation
• 2 year — 24 hour Precipitation
• 10 year — 3 hour Precipitation
• 10 year — 6 hour Precipitation
• 10 year — 24 hour Precipitation
• 100 year — 1 hour Precipitation
• Hydrologic Soil Type "A"
• Slope Intensity Duration Curve
• Runoff Index Number

0.455" (NOAA)

0.721" (NOAA)

0.953" (NOAA)

1.36" (NOAA)

1.50" (NOAA)

1.93" (NOAA)

2.66" (NOAA)

2.41" (NOAA)
(RCFC&WCD Plate C-1.36)
(RCFC&WCD Plate D-4.6)
32 (RCFC&WCD Plate D-5.5)
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III DESIGN CAPTURE VOLUME CALCULATIONS
NORTH
DESIGN CAPTURE VOLUME AREA = 3.80 AC (INCLUDES OFF -SITE FLOW) IMPERVIOUS FRACTION = 0.55
DESIGN CAPTURE VOLUME = 2,069 CU.FT.

INFILTRATION BMP VOLUME PROVIDED = 2,439 CU.FT.

SOUTH
DESIGN CAPTURE VOLUME AREA = 1.23 AC
IMPERVIOUS FRACTION = 0.30
DESIGN CAPTURE VOLUME = 402 CU.FT.

INFILTRATION BMP VOLUME PROVIDED = 1,524 CU.FT.
1852

Whitewater Watershed
Required
Legend:

Entries
Cells
BMP Design Volume, VBMp (Rev. 03-2012)
Calculated
Company Name The Altum Group
Date
County/City Case No
3/20/2025
Designed by James Bazua
C2026
Company Project Number/Name
Drainage Area Number/Name WORLD WILDLIFE MUSEUM - NORTH Enter the Area Tributary to this Feature
AT = 3.8 acres
Determine the Effective Impervious Fraction
Type of post -development surface cover
(use pull down menu)
Effective Impervious Fraction
Mixed Surface Types
If=

0.55 Calculate the composite Runoff Coefficient, C for the BMP Tributary Area Use the following equation based on the WEF/ASCE Method C = 0.858If - 0.78If + 0.774If+ 0.04 C =
Determine Design Storage Volume, VBMP
Calculate VU, the 85% Unit Storage Volume Vu= 0.40 x C V„ = Calculate the design storage volume of the BMP, VBMp.

VBMP (ft3)= VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac) VBMP = (in*ac)/ac
ft3
12 (in/ft)
Notes:
1853

Whitewater Watershed
Legend:

Required Entries
Calculated Cells
BMP Design Volume, VBMp (Rev. 03-2012)
Company Name The Altum Group
Date
County/City Case No
3/20/2025
Designed by James Bazua
C2026
Company Project Number/Name
Drainage Area Number/Name WORLD WILDLIFE MUSEUM - SOUTH Enter the Area Tributary to this Feature
AT = 1.23 acres
Determine the Effective Impervious Fraction
Type of post -development surface cover
(use pull down menu)
Effective Impervious Fraction
Mixed Surface Types
If=

0.30 Calculate the composite Runoff Coefficient, C for the BMP Tributary Area Use the following equation based on the WEF/ASCE Method C = 0.858If - 0.78If + 0.774If+ 0.04 C =
Determine Design Storage Volume, VBMP
Calculate VU, the 85% Unit Storage Volume Vu= 0.40 x C
Calculate the design storage volume of the BMP, VBMp.

VBMP (ft3)= VU (in-ac/ac) x AT (ac) x 43,560 (ft2/ac)
V„ =
VBMP =
(in*ac)/ac
ft3
-..
12 (in/ft)
Notes:
1854

IV RUNOFF VOLUME CALCULATIONS

SUBAREA

NORTH EXISTING

NORTH PROPOSED
2 YR. - 24 HR VOLUME
(CU.FT.)
1537
1537
2 YR. - 24 HR VOLUME
STORED ON -SITE (CU.FT.)
0 1537
2 YR. - 24 HR VOLUME
LEAVING SITE (CU.FT.)
1537
0 10 YR. - 24 HR VOLUME
(CU.FT.)
3560
5799
10 YR. - 24 HR VOLUME
-
2439
STORED ON -SITE (CU.FT.)
10 YR. - 24 HR VOLUME
LEAVING SITE (CU.FT.)
3560
3360

SUBAREA

SOUTH EXISTING

SOUTH PROPOSED
2 YR. - 24 HR VOLUME
(CU.FT.)
602
602
2 YR. - 24 HR VOLUME
0 602
STORED ON -SITE (CU.FT.)
2 YR. - 24 HR VOLUME
LEAVING SITE (CU.FT.)
602
0 10 YR. - 24 HR VOLUME
(CU.FT.)
1178
1168
10 YR. - 24 HR VOLUME
0 1168
STORED ON -SITE (CU.FT.)
10 YR. - 24 HR VOLUME
LEAVING SITE (CU.FT.)
1178
0 1855

A B C
D
1 RCFC&WCD SHORTCUT UNIT HYDROGRAPH METHOD
2 DATA INPUT SHEET
3 4
WORKSHEET PREPARED BY:

JAMES R. BAZUA, P.E.
5 6

PROJECT NAME
WORLD MUSEUM EXIST 2 YR EVENT - NORTH
7 JOB #
C2026
8 9

CONCENTRATION POINT DESIGNATION
1 10

AREA DESIGNATION

ON -SITE
11 12

TRIBUTARY AREAS
ACRES
13 14

COMMERCIAL
15 PAVING/HARDSCAPE

1.24 16
SF - 1 ACRE
17 SF - 1/2 ACRE
18 SF-1/4ACRE
19 MF - CONDOMINIUMS
20 MF- APARTMENTS
21 MOBILE HOME PARK
22 LANDSCAPING

0.87 23

RETENTION BASIN
24 GOLF COURSE
25 MOUNTAINOUS

1.03 26

LOW LOSS RATE (PERCENT)
90%
27 28

LENGTH OF WATERCOURSE (L)
436
29 LENGTH TO POINT OPPOSITE CENTROID (Lca)
46 30
31 ELEVATION OF HEADWATER
356
32 ELEVATION OF CONCENTRATION POINT
264.5
33 34

AVERAGE MANNINGS 'N' VALUE

0.02 35
36 STORM FREQUENCY (YEAR)
100
37 38

POINT RAIN
39 3 -HOUR

0.721
40 6 -HOUR

0.953
41 24 -HOUR

1.36 42
43 BASIN CHARACTERISTICS:

ELEVATION
AREA
44 45
46 47
48 49
50 51
52 PERCOLATION RATE (in/hr)
53 54

DRYWELL DATA
55 NUMBER USED
56 PERCOLATION RATE (cfs)
1856

RCFCD SYNTHETIC UNIT HYDROGRAPH METHOD PROJECT: WORLD MUSEUM EXIST 2 YR EVENT - NORTH BASIC DATA CALCULATION FORM JOB # C2026
SHORTCUT METHOD BY =S R. BAZUA, P.E. DATE 3/28/2025

PHYSICAL DATA
[1] CONCENTRATION POINT
1 [2] AREA DESIGNATION

ON -SITE
[3] AREA - ACRES

3.140
[4] L -FEET
436
[5] L -MILES

0.083
[6] La -FEET

46.00 [7] La -MILES

0.009
[8] ELEVATION OF HEADWATER
356
(9] ELEVATION OF CONCENTRATION POINT
264.5
[10] H -FEET

91.5 [11] S-FEET/MILE
1108.1
[12] S^0.5

33.29 [13] L*LCA/S^0.5

0.000
[14] AVERAGE MANNINGS 'N'

0.02 [15] LAG TIME -HOURS

0.01 [16] LAG TIME -MINUTES

0.5 [17] 100% OF LAG -MINUTES

0.5 [18] 200% OF LAG -MINUTES

1.0 [19] UNIT TIME -MINUTES (100%-200% OF LAG)
5 [24] TOTAL PERCOLATION RATE (cfs)

0.00 RAINFALL DATA
[1] SOURCE
[2] FREQUENCY -YEARS 100
[3] DURATION:
3 -HOURS
6 -HOURS
24 -HOURS
[4]
POINT
RAIN
INCHES
(Plate E-5.2)
[5]
AREA
[6]
[7]

AVERAGE
POINT
RAIN
INCHES
[8]
POINT
RAIN
INCHES
(Plate E-5.4)
[9]
AREA
[10]
[11]

AVERAGE
POINT
RAIN
INCHES
[12]
POINT
RAIN
INCHES
(Plate E-5.6)
[13]
AREA
[14]
[15]

AVERAGE
POINT
RAIN
INCHES

0.72 3.140

1.00 0.72

0.95 3.140

1.00 0.95

1.36 3.140

1.00 1.36

0.00 0.00

0.00 0.00

0.00 0.00

0.00 0.00

0.00 0.00

0.00 0.00

0.00 0.00

0.00 0.00

0.00 0.00
SUM [5]
[16] AREA ADJ
[17] ADJ AVG

3.14 SUM [7]

0.72 SUM [9]

3.14 SUM [11]

0.95 SUM [13]

3.14 SUM [15]

1.36 FACTOR

POINT RAIN

1.000

1.000

1.000

0.72 0.95

1.36 STORM EVENT SUMMARY

DURATION
3 -HOUR
6 -HOUR
24 -HOUR

EFFECTIVE RAIN
(in)

0.17 0.16

0.14 FLOOD VOLUME
(cu -ft)
(acre -ft)
1,896

0.04 1,843

0.04 1,550

0.04 REQUIRED STORAGE
(cu -ft)
(acre -ft)
1,880

0.04 1,828

0.04 1,537

0.04 PEAK FLOW
(cfs)

1.31 1.09

0.06 MAXIMUM WSEL
(ft)
-
-
-
1857
Plate E-2.1