WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 18
MARCH 2026
Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
Biological Resources
MM-BIO-1: Pre-Construction Surveys for Special Status
Wildlife. One pre-construction clearance survey for
southern California legless lizard, California glossy
snake, merlin, loggerhead shrike, San Diego black-
tailed jackrabbit, and pocketed free-tailed bat shall be conducted no more than 14 days prior to initiation of
site preparation and grading activities. A qualified
biologist shall walk the entire project site to determine if the above species are observed or detected. Acoustic detection for bats may be used in conjunction with
visual observation of individuals and sign to determine presence/absence of occupied roosts or foraging
behavior. If any of the above species is observed or
detected during the pre-construction survey, additional measures may be required, such as establishing a
buffer around known locations and/or conducting
monitoring during construction near occupied areas to
move observed individuals out of harm’s way. For
pocketed free-tailed bat, if a roost is found and may be impacted during construction, additional measures,
such as a focused bat survey, replacement roost
installation, and/or agency consultation, may be
required.
No more than 14
days prior to
construction
project
biologist
City of Rialto
Department of
Community
Development
MM BIO-2: Focused Burrowing Owl Surveys. CDFW
protocol focused surveys for burrowing owl shall be
conducted by one Dudek biologist on the disturbed
habitat within the project site according to the protocol outlined in the CDFG Staff Report on Burrowing Owl
Mitigation (CDFG 2012). Breeding season surveys
(February through August) will be conducted in order to positively determine burrowing owl presence or
Prior to
construction,
during breeding
season (February
through August):
At least one
survey will be
conducted
project
biologist;
contractor/
builder
City of Rialto
Department of
Community
Development;
California
Department of
Fish and Wildlife
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 19
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
absence prior to the start of construction. Four (4)
survey visits will be conducted on the study area,
spaced apart to allow an adequate amount of time to
detect burrowing owl throughout the breeding season.
At least one survey will be conducted between
February 15 and April 15, and a minimum of three
surveys conducted at least three weeks apart between
April 15 and July 15, with at least one visit after
June 15.
Dudek’s biologist will walk straight line transects spaced approximately 50-feet apart across the entire project
site and a 500-foot buffer (study area). The entire visible areas on the study area will be scanned with the use of binoculars to search for presence of burrowing owl
including individual owl(s), pellets, prey remains,
whitewash, and/or suitable active burrows. The surveys
will not be conducted during periods of inclement
weather with winds over 12 miles per hour, rain, and/or dense fog. Surveys will also be conducted between
sunrise and 10:00 a.m. Any suitable burrows or
individual owls observed will be mapped with a hand-
held GPS unit and marked on a field map. Special
attention will be paid to the disturbed habitat within the project site that supports small mammal burrows.
If owls are found nesting on the study area, a suitable buffer will be established around the active nest and
this area should be avoided, and a Burrowing Owl
Protection and Relocation Plan shall be drafted to
ensure protection of the species. Additional
avoidance/mitigation measures will be provided in the
Burrowing Owl Protection and Relocation Plan to protect the owls from potential take related to project activities including but not limited to appropriate avoidance
between February
15 and April 15,
and a minimum
of three surveys
conducted at
least 3 weeks
apart between
April 15 and
July 15, with at
least one visit
after June 15
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 20
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
buffers, passive and/or active relocation methodology,
construction biomonitoring, and reporting requirements.
The Burrowing Owl Protection and Relocation Plan shall
be reviewed and approved within 30 days of receipt by
CDFW. If the species is not detected, then no further
action is required.
MM BIO-3: Pre-Construction Burrowing Owl Surveys
and Avoidance. A burrowing owl pre‑construction
survey will be required in compliance with Staff Report on Burrowing Owl Mitigation, State of California Natural Resource Agency, Department of Fish and Game, May
7, 2012 (CDFG 2012). To avoid potential direct
impacts to burrowing owl, a burrowing owl pre-
construction survey shall be conducted by a qualified
biologist no more than 30 days prior to ground-
disturbing project activities. The pre-construction
survey will reevaluate the locations of burrowing owl
burrows located within the study area so take of owls
or active owl nests can be avoided. The survey would
include 100% coverage of the development area and
within suitable habitat areas, within 500 feet of the
project limits.
If active burrowing owl burrows are determined to be
present, they would be flagged, and a 160‑foot buffer
would be created around the burrow during the
nonbreeding season (September 1 to January 30). A
250‑foot buffer would be created during the breeding
season (February 1 to August 31) (Environmental
Planning Group 2020, Dudek 2024). Conversely, a
default 300-foot buffer can be created around active
burrows (Environmental Resource Group 2020). These
buffers may be adjusted by a qualified biologist to
Prior to ground-
disturbing project
activities (no
more than 30
days prior for pre-
construction
survey) and
during
construction
project
biologist;
contractor/
builder
City of Rialto
Department of
Community
Development;
California
Department of
Fish and Wildlife
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 21
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
address site-specific conditions. If possible, avoid
disturbing occupied burrows during the nesting period.
Any mitigation methods, including translocation,
mitigation monitoring and reporting, must be
coordinated with CDFW. If burrowing owl are
determined to be present, MM BIO-5: Biological
Monitoring and Worker Environmental Awareness
Program shall be implemented.
MM BIO-4: Pre-Construction Survey for Crotch’s
Bumble Bee. A pre-construction survey for Crotch's
bumble bee shall be conducted within the construction
footprint prior to the start of ground-disturbing
construction activities occurring during the Colony
Active Period (April 1 through August 31 for Crotch's
bumble bee). If ground-disturbing activities occur
outside the period, no further mitigation would be
required. The survey shall ensure that no nests for
Crotch's bumble bee are located within the
construction area.
The focused survey shall be performed by a biologist
with expertise in surveying for bumble bees. Surveys
may occur between 1 hour after sunrise and 2 hours
before sunset. Surveys shall not be conducted during
wet conditions (e.g., foggy, raining, or drizzling) and surveyors shall wait at least 1 hour following rain.
Optimal surveys are when there are sunny to partly
sunny skies and a temperature greater than 60°F.
Surveys may be conducted earlier if other bees or
butterflies are flying. Surveys shall not be conducted
when it is windy (i.e., sustained winds greater than 8
mph). Within non-developed habitats, the biologist
shall look for nest resources suitable for bumble bee
Prior to the start
of ground-
disturbing
construction
activities
occurring during
the Colony Active
Period (April 1
through
August 31)
project
biologist;
contractor/
builder
City of Rialto
Department of
Community
Development;
California
Department of
Fish and Wildlife
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 22
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
use. Ensuring that all nest resources receive 100%
visual coverage, the biologist shall watch the potential nest resources for up to 5 minutes, looking for exiting or entering worker bumble bees. It is up to the
discretion of the biologist regarding the actual survey viewshed limits from the chosen vantage point, but this limit shall not exceed 50 feet. The biologist will reduce the 50-foot limit as necessary to ensure 100% visual
coverage of potential burrow resources depending on
topography, vegetation height and cover, and other
factors. This approach should allow the biologist to
assess multiple burrows at one time to sufficiently
determine if bees are entering/exiting them. If a nest is suspected, the surveyor can block the entrance of the
possible nest with a sterile vial or jar until nest activity is confirmed (no longer than 30 minutes). A photo
voucher of the bee species shall be collected, and the
location mapped. If required, any capture of bumble
bees will be conducted by a biologist with a valid CESA Memorandum of Understanding (MOU) and Scientific
Collecting Permit (SCP) for Crotch’s bumble bee. If a
bumble bee worker is detected, then a representative
shall be identified to species.
If Crotch's bumble bee nests are not detected, no
further mitigation would be required.
If a Crotch’s bumble bee nest is detected, the project
biologist will establish, monitor, and maintain a no-
work buffer around the nest. The size and
configuration of the no-work buffer will be based on
best professional judgement of the project biologist in consultation with CDFW. The buffer will provide at least 50 feet of clearance around the nest entrance(s).
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 23
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
Construction activities will not occur within the no-work buffer until the colony is no longer active. To determine that a nest is no longer active, the nest will be
observed for a minimum of 60 minutes each day
across a minimum of 3 days during suitable flight
weather (i.e., ambient air temperature between 60-
and 90-degrees Fahrenheit, winds under 10 mph, and
no precipitation more than a drizzling rain). If no bees are seen flying in or out of the nest by the end of the observation period, it will be determined that the nest is no longer active. If project activities occur outside of the Colony Active Period, then pre-construction surveys for active bee nests and avoidance measures are not
required.
A written survey report shall be submitted to the City
within 30 days of the pre-construction survey. The report shall include survey methods, weather conditions, and
survey results, including a list of insect species observed and a figure showing the locations of any Crotch's
bumble bee nest sites or individuals observed. The
survey report shall include the qualifications/resumes of the surveyor(s) and approved biologist(s) for
identification of photo vouchers and a detailed habitat assessment. If Crotch bumble bee nests are observed,
the survey report shall also include recommendations
for avoidance, and the location information shall be
submitted to the California Natural Diversity Database at the time of, or prior to, submittal of the survey report.
If the above measures are followed, it is assumed that
the project shall not need to obtain authorization from CDFW through the CESA Incidental Take Permit
process. If the nest resources cannot be avoided, as
outlined in this measure, the project applicant shall
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 24
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
consult with CDFW regarding the need to obtain an
Incidental Take Permit. Any measures determined to
be necessary through the Incidental Take Permit
process to offset impacts to Crotch's bumble bee may
supersede measures provided in this CEQA document
and shall be incorporated into the habitat mitigation
and monitoring plan.
In the event an Incidental Take Permit is needed,
mitigation for direct impacts to Crotch's bumble bee
shall be fulfilled through compensatory mitigation at a minimum 1:1 nesting habitat replacement of equal or
better functions and values to those impacted by the
project, or as otherwise determined through the
Incidental Take Permit process. Mitigation shall be
accomplished either through off-site conservation or
through a CDFW-approved mitigation bank. If
mitigation is not purchased through a mitigation bank,
and lands are conserved separately, a cost estimate
shall be prepared to estimate the initial start-up costs and ongoing annual costs of management activities for
the management of the conservation easement area(s)
in perpetuity. The funding source shall be in the form of an endowment to help the qualified natural lands
management entity that is ultimately selected to hold
the conservation easement(s). The endowment amount
shall be established following the completion of a
project-specific Property Analysis Record to calculate
the costs of in-perpetuity land management. The
Property Analysis Record shall take into account all
management activities required in the Incidental Take
Permit to fulfill the requirements of the conservation
easement(s), which are currently in review and
development.
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 25
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
MM BIO-5: Biological Monitoring and Worker
Environmental Awareness Program. A biological
monitor shall be present during all ground-disturbing
construction activities to ensure that burrowing owls
are not impacted by the project and to administer
passive relocation of owls, if required. Of burrowing
owls are observed, the biological monitor shall have
the authority to halt construction activities to avoid
damaging sensitive resources or violating applicable
laws. The biological monitor shall conduct an initial
training for all construction workers on the biological resources that require protection during construction
activities (Crotch’s bumble bee, burrowing owl) as well as the measures that must be implemented to protect
those resources. The biological monitor shall maintain
a list of personnel that have received the training and any new personnel shall receive the training prior to
commencing construction activities.
Prior to ground-
disturbing
construction
activities
Contractor/
builder; project
biologist
City of Rialto
Department of
Community
Development
MM-BIO-6: Nesting Bird Avoidance. Pursuant to the
Migratory Bird Treaty Act (MBTA), the project should
avoid the avian nesting season (March 15 –
September 15) in order to reduce any potential impact
to protected birds and their nests. In the event the
project must commence during the nesting season, a
pre-construction clearance survey should be conducted
within 3 days prior to ground-disturbing activities to
determine the presence/absence of nesting birds. If an
active nest is found a biologist will establish a buffer around the nest until the nestlings have fledged and
the nest is no longer active. The buffer will be
established by a biologist based on the sensitivity of
the species to disturbance and proximity to project
activities. Construction activities may continue outside Within 3 days
prior to ground-
disturbing
construction
activities
occurring during
the avian nesting
season
(March 15
through
September 15)
and during
construction
Contractor/
builder; project
biologist
City of Rialto
Department of
Community
Development
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 26
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
of the buffer under the discretion of a monitoring
biologist. The monitoring biologist shall remain onsite to monitor an active nest buffer until the nest has
fledged. Once the biologist has determined the nest is
no longer active, the buffer can be removed, and
construction may continue.
Cultural Resources
MM-CUL-1: Project Archaeologist. Prior to issuance of
any permit for ground-disturbing activities, the Project Applicant shall provide evidence to the City of Rialto
(City) that a qualified professional archaeologist
meeting Secretary of the Interior professional
qualifications (Project Archaeologist) has been
retained.
Prior to ground-
disturbing
construction
activities
project
applicant;
qualified
archaeologist
City of Rialto
Department of
Community
Development
MM-CUL-2: Cultural Resources Management Plan. Prior
to any ground-disturbing activities the Project
Archaeologist shall develop a Cultural Resource
Management Plan (CRMP) to address the details,
timing, and responsibilities of all archaeological and
cultural resource activities that occur on the project
site. The CRMP shall be written in consultation with the Consulting Tribes and shall include the following:
approved Mitigation Measures (MM)/Conditions of
Approval (COA), contact information for all pertinent
parties, parties.
Prior to ground-
disturbing
construction
activities
project
applicant;
qualified
archaeologist;
contractor/
builder
City of Rialto
Department of
Community
Development
MM-CUL-3: Cultural Resources Sensitivity Training. A
Cultural Resources Training shall be provided to all
construction managers and construction personnel
prior to commencing any ground disturbance work
within the project area. The training shall be prepared and conducted or overseen by the Project
Archaeologist. The training content shall include, but is Prior to ground-
disturbing
construction
activities
Contractor/
builder;
qualified
archaeologist
City of Rialto
Department of
Community
Development
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 27
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
not limited to, information about any known cultural
resources in Project area and vicinity and the process
for inadvertent discovery. The training may be
discontinued when ground disturbance is completed.
Construction personnel shall not be permitted to
operate equipment within the construction area unless
they have attended the training. The Qualified
Archeologist or designated Archaeological Monitor and
Monitoring Tribes’ designated representatives shall
attend the pre-grade meeting with the grading
contractors to conduct the initial training and explain and coordinate the requirements of the Cultural
Resource Management Plan.
MM-CUL-4: Archaeological Monitoring. The Project
Archaeologist shall monitor or supervise archaeological monitors (Monitors) for initial ground disturbing
activities. After initial grading, should no cultural
resources be present and/or subsurface soils indicate
a low likelihood for significant intact resources, the
Project Archaeologist shall have the ability to
recommend archaeological monitoring be decreased or
eliminated after initial ground disturbing activities are complete, which shall be approved in writing by the
City. Any such recommendation shall be specific to
archaeological monitoring and not impact the
implementation of Mitigation Measures TCR-1 and/or
TCR-2.
Construction Contractor/
builder;
qualified
archaeologist
City of Rialto
Department of
Community
Development
MM-CUL-5: Inadvertent Discovery of Cultural
Resources. In the event that cultural resources are
discovered during Project implementation, all
earthwork and ground-disturbing activities shall halt
within a 60-foot buffer of the discovery as established by the Project Archaeologist, and the Project
Construction Contractor/
builder;
qualified
archaeologist;
County Coroner
City of Rialto
Department of
Community
Development
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 28
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
Archaeologist shall assess the nature and significance
of the find. The Project Archaeologist shall coordinate with the City and identify whether the resource is
potentially significant and if it requires further
evaluation. Work on the other portions of the project
site outside of the buffered area may continue during
this assessment period. If the cultural resources are
Native American in origin, the Consulting Tribes must
be immediately contacted and consulted regarding
potential significance and treatment of the resource.
Specifically, the Consulting Tribes shall be contacted, as detailed within MM-TCR-2, regarding any pre-contact
finds and shall be provided information after the
Project Archaeologist makes his/her initial assessment
of the nature of the find, so as to provide Tribal input with regard to significance and treatment. For any
potential significant cultural resources, the Project
Archaeologist shall make recommendations to the City
to avoid or mitigate impacts to the resource. If
significant pre-contact cultural resources, as defined by CEQA, are discovered and avoidance cannot be
ensured, the archaeologist shall develop a Monitoring
and Treatment Plan, the drafts of which shall be
provided to the Consulting Tribes for review and
comment, as detailed within MM-TCR-1. The Project
Archaeologist shall monitor the remainder of the
project and implement the Plan accordingly.
Preservation in place (i.e. avoidance) is the preferred manner of treatment. If preservation in place is not
feasible, treatment may include implementation of
archaeological data recovery to excavate the resource
along with subsequent laboratory processing and
analysis. Disposition of significant Native American
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 29
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
archaeological materials, such as reburial or curation
by a qualified repository within San Bernardino County, shall be agreed upon by the City and Consulting Tribes.
Any significant non-Native American archaeological
material shall be curated at a public, non-profit
institution with a research interest in the materials
within San Bernardino County, if such an institution
agrees to accept the material. If no institution accepts the archaeological material, it shall be offered to a
local school or historical society in the area for
educational purposes. All identified cultural resources shall be recorded on appropriate California
Department of Parks and Recreation (CA DPR 523)
series forms and evaluated for significance. All findings shall be included within a Monitoring Report drafted by the Project Archaeologist and submitted to the City and Consulting Tribes for review. Final copies of the
Monitoring Report shall be submitted to the City,
Consulting Tribes, and South Central Coastal
Information Center (SCCIC).
Noise
MM-NOI-1: During all project site excavation and
grading on site, the project contractors shall equip all construction equipment, fixed or mobile, with properly
operating and maintained mufflers consistent with
manufacturers’ standards.
Construction Contractor/
builder
City of Rialto
Department of
Community
Development
MM-NOI-2: The project contractor shall place all
stationary construction equipment so that emitted
noise is directed away from sensitive receptors to the
east and southwest of the site.
Construction Contractor/
builder
City of Rialto
Department of
Community
Development
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 30
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Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
MM-NOI-3: The construction contractor shall locate
equipment staging in areas that will create the greatest distance between construction-related noise sources
and noise-sensitive receptors to the east and
southwest of the site during all project construction.
Prior to and
during
construction
Contractor/
builder
City of Rialto
Department of
Community
Development
MM-NOI-4: During all project site construction, the
construction contractor shall limit all construction-
related activities that would result in high noise levels to between the hours of 7:00 a.m. and 5:30 p.m.
Monday through Friday, and between 8:00 a.m. and
5:00 p.m. Saturday. No construction shall be allowed
on Sundays and public holidays.
Construction Contractor/
builder
City of Rialto
Department of
Community
Development
Tribal Cultural Resources
MM-TCR-1: Retain a Native American Monitor Prior to
Commencement of Ground Disturbing Activities. The
project applicant shall retain a Native American
Monitor from or approved by the Consulting Tribes. The
monitor shall be retained prior to the commencement
of any ground-disturbing activity for the subject project at all project locations (i.e., both on-site and any off-site locations that are included in the project
description/definition and/or required in connection
with the project, such as public improvement work).
“Ground-disturbing activity” shall include, but is not
limited to, demolition, pavement removal, potholing,
auguring, grubbing, tree removal, boring, grading,
excavation, drilling, and trenching. A copy of the
executed monitoring agreement shall be submitted to
the City of Rialto prior to the commencement of any
ground-disturbing activity, or the issuance of any
permit necessary to commence a ground-disturbing
activity. The agreement would also address the
Prior to and
during
construction
project
applicant;
consulting
Native
American Tribe
and Native
American Tribal
monitor
City of Rialto
Department of
Community
Development
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 31
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Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
consideration of rotating monitoring between
Consulting Tribes. The monitor will complete daily
monitoring logs that will provide descriptions of the
relevant ground-disturbing activities, the type of
construction activities performed, locations of ground- disturbing activities, soil types, cultural-related
materials, and any other facts, conditions, materials, or discoveries of significance to the Consulting Tribes.
Monitor logs will identify and describe any discovered
tribal cultural resources (TCRs), including but not
limited to, Native American cultural and historical
artifacts, remains, places of significance, etc., as well as any discovered Native American (ancestral) human
remains and burial goods. Copies of monitor logs will
be provided to the project applicant/ City of Rialto
upon written request to the Consulting Tribes. On-site
tribal monitoring shall conclude upon the latter of the following: (1) written confirmation to the Consulting
Tribes from a designated point of contact for the
project applicant that all ground-disturbing activities and phases that may involve ground-disturbing
activities on the project site or in connection with the project are complete; or (2) a determination and
written notification by the Consulting Tribes to the
project applicant that no future, planned construction
activity and/or development/construction phase at the
project site possesses the potential to impact TCRs.
MM-TCR-2: Unanticipated Discovery of Tribal Cultural
Resource Objects (Non-Funerary/Non-Ceremonial).
Upon discovery of any tribal cultural resources (TCRs), all construction activities in the immediate vicinity of the discovery shall cease (i.e., not less than the
surrounding 60 feet) and shall not resume until the
Construction Contractor/
builder; Native
American Tribal
monitor
City of Rialto
Department of
Community
Development
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 32
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Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
discovered TCR has been fully assessed by the Native
American Monitor (pursuant to Mitigation Measure
[MM] CUL-5). The Consulting Tribes will recover and
retain all discovered TCRs in the form and/or manner
the Consulting Tribes deem appropriate and for any
purpose the Consulting Tribes deem appropriate,
including for educational, cultural and/or historic
purposes. Should the find be deemed significant, as
defined by CEQA, the find shall be addressed to the
protocols outlined in the Cultural Resources
Management Plan from MM CUL-2.
MM-TCR-3: Unanticipated Discovery of Human
Remains and Associated Funerary or Ceremonial
Objects.
A. Native American human remains are defined in
Public Resources Code Section 5097.98 (d)(1) as
an inhumation or cremation, and in any state of
decomposition or skeletal completeness. Funerary
objects, called associated grave goods in Public
Resources Code Section 5097.98, are also to be
treated according to this statute.
B. If Native American human remains and/or grave
goods are discovered or recognized on the project
site, work in the immediate vicinity (within a 100-
foot buffer of the find) shall cease, then Public
Resource Code 5097.9 as well as Health and
Safety Code Section 7050.5 shall be followed.
C. Human remains and grave/burial goods shall be
treated alike per California Public Resources Code
section 5097.98(d)(1) and (2).
Construction Contractor/
builder; County
Coroner
City of Rialto
Department of
Community
Development
WILLOW AND VALLEY WAREHOUSE PROJECT / INITIAL STUDY/MITIGATED NEGATIVE DECLARATION 14204 33
MARCH 2026
Table 2. Mitigation Monitoring and Reporting Program
Mitigation Measure
Mitigation Monitoring Verification of Compliance
Implementing
Period
Implementing
Party
Enforcing
Agency Comments Date Initials
D. Preservation in place (i.e., avoidance) is the
preferred manner of treatment for discovered
human remains and/or burial goods.
E. Any discovery of human remains/burial goods shall
be kept confidential to prevent further disturbance.