Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-12 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
feet apart, forming a circle having a radius of no
less than 100 feet from the point of discovery.
⚫ If the finding(s) is not determined to be potentially significant, work may resume.
⚫ If the finding(s) is determined to be potentially
significant, the archaeologist in consultation with
the Tribal representatives shall develop a
mitigation plan outlining management of the
resource, analysis, reporting of the find, and
curation or reburial of cultural items. The plan shall
be implemented by the County in accordance with
state guidelines and in consultation with the
consulting Tribes. The mitigation plan shall include
avoidance of the resource or, if avoidance of the
resource is not feasible, the plan shall outline
appropriate treatment of the resource in
coordination with the consulting Tribes and a
qualified archaeologist. Examples of appropriate
avoidance and mitigation for the Tribal cultural
resources include, but are not limited to, protecting
the cultural character and integrity of the
resources, protecting traditional use of the
resources, protecting the confidentiality of the
resources, heritage recovery, processing materials
for reburial, minimizing handling of cultural
objects, leaving objects in place within the
landscape, construction monitoring of any further
activities by a Tribal representative, and/or
returning the objects to a location that will be set
aside within the Project area or area agreed upon
with consulting Tribes where they will be
protected in perpetuity not be subject to future
impacts such as development. Preservation in place
(i.e., avoidance) is typically the preferred manner
of treatment of Tribal resources and cultural items.
Tribal Cultural Resources shall not be permanently
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-13 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
curated, unless specifically requested by the Tribe.
Work may resume according to the
recommendations in the mitigation plan.
⚫ Any previously undiscovered resources found
during construction within the Project Site shall be
recorded on appropriate California Department of
Parks and Recreation (DPR) 523 forms. These
forms shall be submitted to Contra Costa County
Department of Conservation and Development, and
the Northwest Information Center (NWIC), as
required. County will follow an unanticipated
discovery plan developed with the Tribe for
curation or reburial of resources.
Impact CUL-a
& CUL-b:
Substantial
adverse change
in the
significance of a
historical or
archaeological
resource
Mitigation Measure CUL-4: Communication
Protocols for Tribal Monitoring
The contractor shall develop a set of communication
protocols, to the satisfaction of the County and Wilton Rancheria, to identify all points of contact and to
ensure that tribes are notified when the applicant will proceed with authorized construction activities. Points of contact will be established for the applicant,
construction supervisor, monitoring tribes, and County
archaeologist, and the contact numbers and email
addresses must be documented and shared among all
parties. Points of contact are responsible for identifying backup representatives in the event they are unable to
perform due to an absence or other reasons.
The contractor shall provide advanced notice of the
anticipated work schedule involving earthmoving
activities of the project within a minimum of ten (10)
business days prior to the specified work commencing.
During
construction
Qualified
archaeologist,
Contractor and
CCCPWD
Resident
engineer and
CCCPWD
Impact CUL-c:
Disturbance of
human remains
Mitigation Measure CUL-5: Stop Work and
Notification Procedures for Human Remains
In the event of the accidental discovery or recognition of any human remains, there shall be no further
During
construction
Resident
engineer and
CCCPWD
Resident
engineer and
CCCPWD
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-14 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
excavation or disturbance within 100 feet of the
remains. The Contra Costa County Coroner will be
contacted immediately to determine whether the
remains are Native American and if an investigation of
the cause of death is required. At the same time, an
archaeologist shall be contacted to assess the situation.
If the Coroner determines the remains may be those of
a Native American, the Coroner shall contact the Native American Heritage Commission (NAHC) by telephone
within 24 hours of this identification. The NAHC shall
identify a Most Likely Descendant (MLD) to inspect the
site and provide recommendations for the proper
treatment of the remains and associated funerary
objects. [Pursuant to California Health and Safety Code Section 7050]
If the MLD recommend keeping ancestral remains and
funerary objects in situ and protected, the County shall make every effort to follow the recommendation. If
removal of ancestral remains and related funerary
objects is necessary, Tribal representatives shall work with the qualified archaeologist to ensure that
excavation and documentation are conducted carefully,
ethically, and the ancestral remains are treated
respectfully. No photography or scientific study,
destructive or non-destructive, shall be conducted on
ancestral human remains. No presentations or other inperson displays of data shall be done without explicit and written approval from Wilton Rancheria. The
archaeologist shall prepare a report of all activities, including the recommendations of the MLD for the
treatment of the human remains and any associated
funerary objects. The report shall be submitted to the
County, the Northwest Information Center, and the
Tribe(s). [Pursuant to California Public Resources Code Section 5097.98]
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-15 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
The County, as the landowner, in consultation with the
Tribe(s) shall provide a secure, climate-controlled
storage facility for any recovered ancestral remains
until completion of the excavation process. If no such
facility exists, the remains shall be secured in a lockbox on-site. The County shall also be responsible for
securing exposed but unrecovered ancestral remains
during the excavation process. This may include hiring
temporary security staff or covering the exposed
excavation area with large metal plates that do not
contact the remains.
Native American human remains and associated
funerary objects shall be treated with appropriate
dignity until reburial by Tribal representatives either:
1) In accordance with the recommendations of the MLD
if available; or 2) In the project vicinity at a location agreed upon by the MLD and the County, where the
reburial would be protected in perpetuity and would
not be subject to further subsurface disturbance. The
discovery is to be documented on DPR523 forms or
submitted to the Native American Heritage
Commission (NAHC) and otherwise kept confidential
and secure to prevent any further disturbance.
Impact GEO-f:
Destruction of a
unique
paleontological
resource or site
or unique
geological
feature
Mitigation Measure GEO-1: Procedures for
Paleontological Resources
Contractor(s) shall be notified of the possibility of
encountering paleontological materials during grounddisturbing activities. A standard inadvertent discovery clause will be included in every construction contract
to inform contractors of requirements during
construction.
Implement the following measures if potential
unanticipated paleontological resources are discovered
during project construction.
During
construction
Qualified
paleontologist,
Resident
engineer and
CCCPWD
Resident
engineer and
CCCPWD
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-16 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
1) Contractor will be educated on the types of
materials that may be encountered.
2) If an inadvertent discovery is made, the contractor
will cease all ground-disturbing activities in the
area of discovery.
3) Contractor will immediately notify the County who
will then request a qualified paleontologist to
evaluate the finding(s).
4) If the finding(s) is determined to be potentially
significant, the paleontologist will develop a
research design and treatment plan outlining
management of the resource, analysis, and
reporting of the find.
Impact HAZ-b:
Release of
hazardous
materials into
the
environment
Mitigation Measure HAZ-1: Soil Management Plan
The County or its contractor(s) shall prepare and
implement, during site preparation and grading
activities, a soil management plan (SMP) consistent
with the recommendations in the Phase II
Environmental Site Assessment and Peer Review
Memorandum prepared for the proposed project. The
SMP shall be designed to protect human health and the
environment. It shall include protocols (including
additional sampling, as necessary), measures, and
techniques for the proper handling, management, and
disposition of affected materials found on the site
during site preparation, grading, excavating, and other earth-disturbing activities. The SMP shall also be
designed to protect workers and off-site receptors
during site activities and ensure the proper
characterization, management, and/or disposal of
contaminated environmental media (including
impacted media identified in prior environmental
investigations conducted within the project site) that is above applicable ESLs. The SMP shall be implemented
throughout all ground-disturbing work.
Prior to and
during
construction
Resident
engineer,
Contractor and
CCCPWD
Resident
engineer and
CCCPWD
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-17 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
The SMP shall also establish protocols and measures
for addressing the discovery of presently unknown
environmental conditions or subsurface structures
such as underground storage tanks or sumps. If
unknown environmental conditions or subsurface
structures are uncovered, as directed by an oversight
agency, additional site investigation and
characterization may be required prior to construction
to ensure that potential impacts do not exceed
applicable regulatory thresholds. If additional site
investigation and characterization are required prior to construction, the County or its contractor(s) shall
implement said studies (and their respective
recommendations, if necessary) prior to construction.
Impact NOI-1:
Mechanical
equipment
noise
Mitigation Measure NOI-1 Design Building
Equipment and Enclosures to Meet County and City
Noise Standards
Prior to issuance of building permits for a proposed
project building that would include mechanical
equipment, the County will retain a qualified acoustical consultant to prepare an acoustical report and address
mechanical equipment noise issues, based on the
selected equipment models and design features. The
final report, including the analysis results and any
recommended noise control measures, will be provided
to and approved by the County at the time of
construction permit application for the building. The
recommendations of the report will be incorporated
into the applicable project plans (e.g., site,
architectural, civil, mechanical, as needed) and
implemented during project construction. The
acoustical report will satisfy the following
requirements:
• The analysis will evaluate the design and provide
recommendations, as necessary, to ensure that
Prior to and
during
construction
Resident
engineer,
Contractor and
CCCPWD
Resident
engineer and
CCCPWD
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-18 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
combined noise levels from mechanical equipment
at the project building, including the recommended
noise-control measures incorporated into the project
design, will not exceed the following noise exposure
levels:
o County noise exposure limits (i.e., 60 dBA L50
during daytime hours of 7:00 a.m. to 7:00 p.m.
and 55 dBA L50 during nighttime hours of 7:00
p.m. to 7:00 a.m.) for the nearby residential
uses; and
o City noise exposure limits (i.e., 55 dBA Leq
during daytime hours of 7:00 a.m. to 10:00 p.m.
and 45 dBA Leq during nighttime hours of 10:00
p.m. to 7:00 a.m.) for the nearby residential uses.
• The analysis will consider all noise-generating
equipment, including the anticipated worst-case
combination(s) of equipment that could run
simultaneously. Noise-generating equipment may
include, but is not limited to, ground-source heat
pumps, air-source heat pumps, transformers, and
battery back-up system units.
• Noise-control recommendations may include, but
are not limited to, the following:
o Changing equipment locations, including locating
equipment inside buildings, as feasible,
o Selecting quieter equipment models,
o Providing equipment sound power limits in
procurement specifications,
o Shielding equipment with rooftop parapet walls,
louvers, screens, or enclosures,
o Using acoustic absorption materials, and
o Installing intake or exhaust silencers.
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-19 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
Impact TCR-a:
Adverse change
in the
significance of a
tribal cultural
resource
Mitigation Measure TCR-1: Collaboration with Local
Native American Tribes to Honor the indigenous
Community
The project proponents shall work in collaboration
with the Wilton Rancheria to determine how to best
honor the indigenous community that lived in the area
prior to colonization and the proposed California
Indian District. This could be expressed through
installation of an information panel or plaque that
describes the importance of the area, and incorporation of indigenous art and design elements and native plants into the design for the project, to honor and
acknowledge tribal history and ancestry.
Prior to and
during
construction
Contractor and
CCCPWD
Resident
engineer and
CCCPWD
Impact TCR-a:
Adverse change
in the
significance of a
tribal cultural
resource
Mitigation Measure TCR-2: Support for Tribal
Ceremonies to Preserve the Sacred Nature of the
Project Site
If requested by Wilton Rancheria, the project
proponents shall accommodate ceremonial practices at
the project site, to help preserve and restore the
sacredness of the significant Tribal cultural resources that will be affected by construction. The nature and
the frequency of the ceremonies will be determined by
the Wilton Rancheria, but the project proponents
understand that such ceremonies will not
unnecessarily impede the project. The County shall
negotiate the level of reimbursement to the Wilton
Rancheria for the cost of the materials necessary for
conducting the on-site ceremonies to be held before the start of project construction.
NON-INTENTIONAL DISTURBANCES
Unless authorized by Wilton Rancheria THPO,
contractors, subcontractors, or consultants shall not
purposely (1) search for, (2) disturb, (3)
photograph/draw or (4) excavate Burials, Burial
Prior to and
during
construction
Contractor and
CCCPWD
Resident
engineer and
CCCPWD
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-20 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
Objects, Burial Soil, Cemeteries, Sacred Objects, or
Sacred Sites and Structures beyond the requirements of
the project activity. Any unapproved deliberate search, disturbance or excavation shall be considered to be a
violation of this agreement and potentially a violation of the California State Public Resources Code as
outlined under heading 5.
Such areas or objects may be unintentionally
encountered during the course of ground disturbance.
If this occurs, work must be stopped in the Work Area
for 100 feet in all directions from the disturbance.
Work may not resume in this area until it has been
authorized by the Wilton Rancheria THPO or his
appointee. Such authorization shall not be
unreasonably withheld by Wilton Rancheria, and
Wilton Rancheria shall provide a plan for work to
resume within two business days of unintentional
disturbance.
CONFIDENTIALITY
California Public Records Act, California Government
Code §§ 6254.10, 6254(r). Records of Native American
graves, cemeteries, and sacred places and records of
Native American places, features, and objects described in Sections 5097.9 and 5097.993 of the Public
Resources Code maintained by, or in the possession of,
the Native American Heritage Commission, another
state agency, or a local agency.
Nothing in this chapter requires disclosure of records
that relate to archaeological site information and
reports maintained by, or in the possession of, the
Department of Parks and Recreation, the State
Historical Resources Commission, the State Lands
Commission, the Native American Heritage
Commission, another state agency, or a local agency,
Contra Costa County Public Works Department
Attachment F
Mitigation Monitoring and Reporting Program for the Draft IS/MND East County Service Center (County Project No. WH429A)
Mitigation Monitoring and Reporting Program F-21 February 2026 Impact Mitigation Measure
Implementation
Timing
Implementation
Responsibility
Verification
Responsibility
Compliance
Verification
Date
including the records that the agency obtains through a consultation process between a California Native
American tribe and a state or local agency.
The National Historic Preservation Act (NHPA, 54 U.S.C. § 307103), which provides limited authority for
withholding disclosure of information about the
“location, character and ownership” of historic
resources to the public. The Archaeological Resources
Protection Act (ARPA, 16 U.S.C. § 470hh), which
provides authority to limit information on the “nature
and location” of archaeological resources.
CITY COUNCIL AGENDA ITEM NO. J.1
02/10/2026
SUBJECT: Consider a request from Mayor Meyer and Council Member Mendoza regarding content standards for the City’s website and the Better in Brentwood website pages, and the use of press releases
DEPARTMENT: City Manager’s Office
STAFF: G. Harold Duffey, City Manager
Amanda McVey, City Clerk
TITLE/RECOMMENDATION
That the City Council consider and discuss Mayor Meyer and Council Member Mendoza’s request that the City’s website and associated social media pages be limited to City business and official City activity; that business and retail promotions be posted only on the Better in Brentwood website and associated social media pages; and that a standard be set related to information released through press releases.
FISCAL IMPACT
There is no fiscal impact associated with this agenda item at this time.
BACKGROUND
Pursuant to Rule 4.4 (b)(2) of City Council Policy 110-1, this item has been placed on the agenda so that the City Council may discuss it and provide further direction to staff. Per Section 4.4, City Council discussion is limited to whether staff time and City resources should be spent on the item and the time period for scheduling.
CITY COUNCIL STRATEGIC INITIATIVE
Not Applicable
PREVIOUS ACTION
Not Applicable
ATTACHMENT(S)
None