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III. Air Quality
MM 4.B-1: In order to be consistent with the MSM A-1 and MSM A-2 Transportation Control Measures, the City shall require that the following measures be included as potential Transportation Demand Management strategies to be
implemented by individual project applicants, where feasible and appropriate:
Install charging units for electric vehicles at residences and businesses.
Develop incentives for businesses to include preferential parking for electric and/or hybrid vehicles. (As required by the 2010 California Green Building Standards Code,
Chapter 5, Section 5.106.5.2).
Submittal and approval of
TDM Plan.
Incorporation of TDM
strategies into project
construction documents.
During permit
processing
During permit
processing
City of Napa Public
Works Traffic
Engineer; Economic
Development,
Building Official
MM 4.B-2: The City shall ensure that the Specific Plan design guidelines and development standards incorporate the
following measures to reduce or avoid exposure of sensitive receptors to TACs:
Part 1 for construction activities, measures may include, but not limited to, the following:
Minimize idling time either by shutting equipment off when not in use or reducing the time of idling to 5 minutes (as required by the State Airborne Toxics Control Measure [Title 13, Section 2485 of the California Code of Regulations]).
Provide clear signage that posts this requirement for
workers at the entrances to the site.
Use new diesel engines that are designed to minimize DPM emissions (usually through the use of catalyzed particulate filters in the exhaust) or retrofitting older engines with catalyzed particulate filters which would reduce up to 85 percent of DPM emissions.
Part 2 for operational activities, in order to comply with the Air Quality and Land Use Handbook: A Community Health
Perspective (ARB 2005) and achieve an acceptable interior air quality level for sensitive receptors, appropriate measures, Incorporation into project
construction documents.
Submittal of proof of
implementation during
construction.
The requirements of Part
2 under MM 4.B-2 have
been satisfied by the
analysis contained within
the CEQA Addendum,
and no further action
would be needed by the
proposed project with
respect to
implementation of MM
4.B-2, Part 2.
Prior to building
permit
During construction
through to issuance
of occupancy permit
City of Napa
Community
Development
Department;
Building Official;
Field Inspector
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shall be incorporated into residential building design. For projects to be developed under the Specific Plan that include residential receptors within 1,000 feet of a source of TACs (stationary or CNR railroad), the appropriate measures shall include one of the following methods:
1. The project applicant shall retain a qualified air quality consultant to prepare a Health Risk Assessment in
accordance with the ARB and the Office of Environmental Health and Hazard Assessment requirements to determine
the exposure of project residents to TACs prior to issuance of a demolition, grading, or building permit. The HRA shall be submitted to the Planning Division for review and
approval. The applicant shall implement the approved HRA recommendations, if any. If the HRA concludes that the air quality risks from nearby sources are at or below acceptable levels, then additional measures are not required.
2. The project applicant shall implement features to reduce the air quality risk to sensitive receptors and shall be included in the project construction plans, as applicable. These shall be submitted to the Building Division for review and approval prior to the issuance of a building permit and ongoing. a) Do not locate sensitive receptors near distribution
center’s entry and exit points.
b) Do not locate sensitive receptors in the same building as a perchloroethylene dry cleaning facility.
c) Maintain a 50’ buffer from a typical gas dispensing
facility (under 3.6 million gallons of gas per year).
d) Install, operate and maintain in good working order a central heating and ventilation (HV) system or other air take system in the building, or in each individual
residential unit that meets the efficiency standard of the MERV 13. The HV system shall include the following
features: Installation of a high efficiency filter and/or carbon filter to filter particulates and other chemical matter from entering the building. Either HEPA filters or ASHRAE 85 percent supply filters shall be used.
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e) Retain a qualified HV consultant or HERS rater during the design phase of the project to locate the HV system based on exposure modeling from the mobile and/or
stationary pollutant sources.
f) Maintain positive pressure within the building.
g) Achieve a performance standard of at least one air
exchange per hour of fresh outside filtered air.
h) Achieve a performance standard of at least four air
exchanges per hour of recirculation.
i) Achieve a performance standard of 0.25 air exchanges per hour of unfiltered infiltration if the building is not positively pressurized.
j) Project applicant shall maintain, repair and/or replace HV system or prepare an Operation and Maintenance
Manual for the HV system and the filter. The manual
shall include the operating instructions and maintenance and replacement schedule. This manual shall be
included in the CC&Rs [Covenants, Conditions, and
Restrictions] for residential projects and distributed to the building maintenance staff. In addition, the applicant shall prepare a separate Homeowners Manual. The
manual shall contain the operating instructions and
maintenance and replacement schedule for the HV
system and the filters. It shall also include a disclosure to the buyers of the air quality analysis findings.
Part 3 for projects developed under the Specific Plan that result in phased implementation whereby construction activities of one phase overlap with the operational activities of another phase, and where no previous project-specific air quality analysis has been prepared, the following requirements shall apply:
1. Prior to issuance of any demolition, grading, or building permit for any project where the proposed phasing would create overlapping construction and operational
conditions, the project applicant shall retain a qualified air
For part 3, preparation of
a project specific air
quality analysis to be
submitted to the Planning
Manager.
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quality consultant to prepare a project specific air quality analysis to be submitted to the Planning Manager for
review and approval.
a. The analysis shall quantify combined daily
emissions (in pounds) from:
i. Peak construction activity of the
subsequent phase (or phases); and
ii. Peak operational activity of any
previously completed phase (or phases)
that would be operating during
construction.
b. The analysis shall utilize Bay Area Air District-
accepted emissions models and methodologies
(e.g., CalEEMod), will evaluate the criteria air
pollutants emissions identified above, and
compare combined emissions against applicable
Bay Area Air District significance thresholds.
c. The analysis shall demonstrate whether
incorporation of measures, including but not
limited to, measures within Part 1 and Part 2,
would reduce combined emissions to below
applicable Bay Area Air District thresholds. If
exceedances remain after applying measures,
the applicant shall implement all additional
feasible measures (construction or operational)
necessary to reduce emissions to a
less-than-significant level. These measures shall
be reviewed and approved by the Planning
Manager within the Planning Division prior to
permit issuance and implemented by the
Applicant.
d. If, after implementation of all feasible mitigation, combined overlapping emissions cannot be
reduced to below applicable Bay Area Air District
significance thresholds, a permit shall not be
issued.
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MM 4.B-4: Implement Mitigation Measure 4.B-1 to ensure
consistency with the Bay Area Air District TCMs to promote clean, fuel efficient, and zero-emission vehicles.
See Mitigation Measure
4.B-1.
See Mitigation
Measure 4.B-1.
See Mitigation
Measure 4.B-1.
MM 4.B-5: The City shall ensure that applicant(s) for individual projects to be developed under the Specific Plan would
incorporate Green Building and Development Measures as
listed in Appendix C (AIR-2). Each increment of new
development under the Specific Plan requiring a discretionary approval from the City (e.g., proposed tentative subdivision map, conditional use permit), would demonstrate that GHG emissions from operation would be reduced by 30 percent from business-as-usual 2020 emissions levels, in order to achieve 1990 levels by 2020.
Ensure compliance of
project with Green
Building and
Development Measures.
During permit
processing; ongoing
City of Napa
Community
Development
Department; planner
assigned to project;
building plan
checker
IV. Biological Resources
MM 4.C-1b: Pre-Construction Special-Status Avian Surveys.
No more than two weeks in advance of any tree or shrub
pruning, removal (February 1 through August 31), a qualified wildlife biologist will conduct pre-construction surveys of all potential special-status bird nesting habitat in the vicinity of the planned activity. Pre-construction surveys are not required for construction activities scheduled to occur during the
nonbreeding season (August 31 through January 31) or if no tree or shrub pruning or removal will occur. Construction activities commencing during the nonbreeding season and continuing into the breeding season do not require surveys (as it is assumed that any breeding birds taking up nests would be acclimated to project-related activities already under way).
Nests initiated during construction activities would be presumed to be unaffected by the activity, and a buffer zone around such nests would not be necessary. However, a nest initiated during construction cannot be moved or altered.
If pre-construction surveys indicate that no nests of special- status birds are present or that nests are inactive or potential habitat is unoccupied: no further mitigation is required.
If active nests of special-status birds are found during the surveys: implement Mitigation Measure 4.C-1c.
Qualified Biologist’s pe-
construction survey and
submittal of survey
documents.
No more than 14
days before start or
restart of
construction during
the months of
February to August.
City of Napa
Community
Development
Department;
Qualified Biologist
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MM 4.C-1c: Avoidance of active nests. If active nests of special-status birds or other birds are found during surveys, the results of the surveys would be discussed with the California Department of Fish and Game and avoidance procedures will be adopted, if necessary, on a case-by-case basis. In the event that a special-status bird or protected nest is found,
construction would be stopped until either the bird leaves the area or avoidance measures are adopted. Avoidance
measures can include construction buffer areas (up to several hundred feet in the case of raptors), relocation of birds, or seasonal avoidance. If buffers are created, a no disturbance zone will be created around active nests during the breeding season or until a qualified biologist determines that all young have fledged. The size of the buffer zones and types of construction activities restricted will take into account factors such as the following:
1. Noise and human disturbance levels at the Plan area and the nesting site at the time of the survey and the noise and disturbance expected during the construction activity;
2. Distance and amount of vegetation or other screening between the Plan area and the nest; and sensitivity of
individual nesting species and behaviors of the nesting birds.
Consultation with
California Department of
Fish and Wildlife (CDFW)
and incorporation of
avoidance measures into
construction documents.
Prior to approval of
construction permits
CDFW; City of Napa
Community
Development
Department
V. Cultural and Tribal Cultural Resources
MM 4.D-1: The City shall require that any future development under the Specific Plan meets the intent and goals of the City of Napa Downtown Historic Design Guidelines. This includes any project that would alter historic resources or would be constructed adjacent to a historic resource.
Ensure compliance of
project application with
City of Napa Downtown
Historic Design
Guidelines.
Prior to project
approval
City of Napa
Community
Development
Department
MM 4.D-2a: When specific projects are proposed under the Specific Plan that involves ground-disturbing activity into native soils, the City's "PastFinder" archaeological database shall be consulted. Recommendations provided by the "PastFinder" database shall be implemented based on a parcel’s
archaeological sensitivity. In those cases where a site-specific cultural resources study is necessary, it shall be performed by MM 4.D-2a has been
satisfied through the
consultation with the
City’s PastFinder
database.
Prior to project
approval
City of Napa
Community
Development
Department;
Qualified cultural
resources
professional
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qualified cultural resources professionals. The study will include an updated records search, pedestrian survey of the project area, development of a historic context, sensitivity assessment for buried prehistoric and historic period deposits, and preparation of a technical report that meets federal and State requirements. If significant resources are identified and cannot be avoided, treatment plans will be developed in consultation with the City and Native American representatives to mitigate potential impacts to less than significant.
MM 4.D-2b: Should any archaeological artifacts be found during construction in the Planning Area, all construction activities within 50 feet shall immediately halt and the City must be notified. A qualified Archaeologist shall inspect the findings within 24 hours of the discovery. If the site is determined to contain significant cultural resources, funding will be provided to identify, record, report, evaluate, and recover the resources as necessary. Construction within the area of the find shall not recommence until impacts on the historical or unique
archaeological resource are mitigated. Additionally, Public Resources Code Section 5097.993 stipulates that a project sponsor must inform project personnel that collection of any Native American artifact is prohibited by law.
Submittal and approval of
documentation that
construction personnel
have been trained
regarding the illegality of
collecting Tribal artifacts.
If archaeological artifacts
are found, project
applicant and its
contractor(s) will halt all
construction activities
within 50 feet and notify
the City. Qualified
archaeologist will inspect
the findings within 24
hours of the discovery.
Identify record, report,
evaluate, and recover the
resources as necessary.
Upon full mitigation City
will give approval for
recommencement of
construction within the
area.
Prior to demolition
or grading permit
(whichever occurs
first)
Ongoing during
demolition, grading,
and construction.
City of Napa
Community
Development
Department;
building official;
building plan
checker; Qualified
archaeologist
MM 4.D-4: The treatment of any human remains and
associated or unassociated funerary objects discovered during Upon discovery of human
remains and associated
Ongoing during
grading and
City of Napa
Community
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soil-disturbing activities shall comply with applicable State laws. Such treatment would include immediate notification of the Napa County Coroner. In the event of the Coroner’s
determination that the human remains are Native American, the Coroner shall notify of the Native American Heritage Commission, which would appoint a Most Likely Descendant (MLD) (PRC § 5097.98). The archaeological consultant, the Event Authority, and MLD shall make all reasonable efforts to develop an agreement for the treatment, with appropriate dignity, of any human remains and associated or unassociated funerary objects (CEQA Guidelines § 15064.5(d)). The
agreement would take into consideration the appropriate excavation, removal, recordation, analysis, custodianship, curation, and final disposition of the human remains and associated or unassociated funerary objects. The PRC allows 48 hours to reach agreement on these matters. If the MLD and the other parties could not agree on the reburial method, the Event Authority shall follow Section 5097.98(b) of the PRC, which states that “the landowner or his or her authorized representative shall reinter the human remains and items associated with Native American burials with appropriate dignity on the property in a location not subject to further subsurface disturbance.”
or unassociated funerary
objects, the project
applicant will immediately
notify Napa County
Coroner and City of Napa
project planner. After
such notification, the
archaeological
consultant, project
applicant, Native
Heritage Commission,
and Most Likely
Descendant (MLD) will
develop an agreement in
accordance with the
specifications of this
measure and state law.
If the MLD and the other
parties could not,
applicant will reinter the
human remains in
accordance with the
specifications of this
measure and state law.
The project applicant will
incorporate the
specifications of this
measure into project
specifications and
grading and construction
plans.
construction
In the event of an
accidental discovery
or recognition of any
human remains
during ground-
disturbing activities
Prior to ground-
disturbing activities
Development
Department; field
inspector
Project-Specific IM CUL-1: Archaeological Monitoring
Prior to the initiation of construction activities, all construction personnel conducting ground disturbance at the site shall be Submit documentation
that WEAP training has
been conducted by a
Prior to the initiation
of construction
activities
Qualified
Archaeologist; City
of Napa Community
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provided a Worker Environmental Awareness Program (WEAP) cultural resources “tailgate” training. The training shall include visual aids, a discussion of applicable laws and statutes relating to archaeological resources, types of resources that may be found within the project site, and procedures to be followed in the event such resources are encountered. The training shall be conducted by an Archaeologist who meets the Secretary of the Interior’s Professional Qualification Standards for archaeology.
qualified professional
Archaeologist who meets
the Secretary of the
Interior’s Professional
Qualification Standards
for archaeology.
Development
Department
VI. Energy
MM 4.B-1: In order to be consistent with the MSM A-1 and MSM A-2 Transportation Control Measures , the City shall require that the following measures be included as potential Transportation Demand Management strategies to be
implemented by individual project applicants, where feasible and appropriate:
Install charging units for electric vehicles at residences and businesses.
Develop incentives for businesses to include preferential parking for electric and/or hybrid vehicles. (As required by the 2010 California Green Building Standards Code,
Chapter 5, Section 5.106.5.2).
See Mitigation Measure
4.B-1.
See Mitigation
Measure 4.B-1.
See Mitigation
Measure 4.B-1.
VII. Geology, Seismicity and Soils
MM 4.D-3: Prior to the start of any subsurface excavations that would extend beyond previously disturbed soils, all
construction forepersons and field supervisors shall receive training by a qualified professional Paleontologist, as defined by the Society of Vertebrate Paleontology (SVP), who is experienced in teaching non-specialists, to ensure they can recognize fossil materials and will follow proper notification procedures in the event any are uncovered during
construction. Procedures to be conveyed to workers include halting construction within 50 feet of any potential fossil find and notifying a qualified Paleontologist, who will evaluate its significance. Training on paleontological resources will also be Submittal and approval of
project sponsor’s
documentation of
trainings of forepersons,
field supervisors and all
construction workers.
If required, submittal and
approval of
paleontologist’s
excavation and salvage
plan.
Prior to demolition
or grading permit
(whichever occurs
first)
Prior to the start of
any subsurface
excavations
City of Napa
Community
Development
Department;
building official
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provided to all other construction workers but may involve using a videotape of the initial training and/or written materials rather than in-person training by a Paleontologist. If a fossil is determined to be significant and avoidance is not feasible, the Paleontologist will develop and implement an excavation and salvage plan in accordance with SVP standards.
VIII. Greenhouse Gas Emissions
MM 4.B-1: In order to be consistent with the MSM A-1 and MSM A-2 Transportation Control Measures (TCMs), the City shall require that the following measures be included as potential Transportation Demand Management (TDM)
strategies to be implemented by individual project applicants, where feasible and appropriate:
Install charging units for electric vehicles at residences and businesses.
Develop incentives for businesses to include preferential parking for electric and/or hybrid vehicles. (As required by the 2010 California Green Building Standards Code,
Chapter 5, Section 5.106.5.2).
See Mitigation Measure
4.B-1.
See Mitigation
Measure 4.B-1.
See Mitigation
Measure 4.B-1.
MM 4.B-4: Implement Mitigation Measure 4.B-1 to ensure
consistency with the Bay Area Air District TCMs to promote clean, fuel efficient and zero-emission vehicles.
See Mitigation Measure
4.B-1.
See Mitigation
Measure 4.B-1.
See Mitigation
Measure 4.B-1.
MM 4.B-5: The City shall ensure that applicant(s) for individual projects to be developed under the Specific Plan would
incorporate Green Building and Development Measures as
listed in Appendix C (AIR-2). Each increment of new
development under the Specific Plan requiring a discretionary approval from the City (e.g., proposed tentative subdivision map, conditional use permit), would demonstrate that GHG emissions from operation would be reduced by 30 percent from business-as-usual 2020 emissions levels, in order to achieve 1990 levels by 2020.
Incorporate Green
Building and
Development Measures
into project design as
listed in Appendix C (AIR-
2) and demonstrate GHG
emissions from
operations would adhere
to reduction goals set by
the City.
During permit
processing
City of Napa
Community
Development
Department;
building plan
checker
XIII. Noise
MM 4.I-1a: Construction contractors for subsequent
development projects within the Planning Area shall utilize the Review and approve
project specifications and
Prior to issuance of
building and grading
City of Napa
Community
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best available noise control techniques (e.g., improved mufflers, equipment redesign, use of intake silencers, ducts, engine enclosures, and acoustically-attenuating shields or shrouds, etc.) when within 400 feet of sensitive receptor locations. Additional techniques shall include, but not be limited to the following noise control elements:
Nonresidential construction project activities (Monday through Friday) shall be limited to the hours of 7:00 a.m. to 7:00 p.m. with no startup of machines or equipment prior to 8:00 a.m. No delivery of materials nor equipment shall occur prior to 7:30 a.m. or after 5:00 p.m. No cleaning of machines or equipment shall occur after 6:00 p.m. No servicing of equipment shall occur past 6:45 p.m. Construction of
weekends and holidays shall be limited to the hours of 8:00 a.m. to 4:00 p.m., unless a permit allows otherwise.
Impact tools (e.g., jack hammers, pavement breakers, and rock drills) used for construction shall be hydraulically or electrically powered wherever possible to avoid noise
associated with compressed air exhaust from pneumatically powered tools. However, where use of pneumatic tools is unavoidable, an exhaust muffler on the compressed air
exhaust shall be used; this muffler shall achieve lower noise levels from the exhaust by approximately 10 dBA. External jackets on the tools themselves shall be used where feasible in order to achieve a reduction of 5 dBA. Quieter procedures shall be used, such as drills rather than impact equipment, whenever feasible.
All construction equipment shall not be placed adjacent to developed areas unless said equipment is provided with
acoustical shielding.
Signs shall be posted at all construction site entrances to the property upon commencement of project construction, for the purposes of informing all contractors and subcontractors, their employees, agents, materialmen, and all other persons grading and construction
plans for inclusion of
specifications in this
measure.
Inspect site during
construction to ensure
compliance with project
specifications and
grading and construction
plans.
permit(s).
Field inspections
during construction.
Development
Department;
building official; field
inspector
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at the construction site, of the basic requirements of
Mitigation Measures 4.1-a through 4.1-c.
MM 4.I-1b: Should pile driving be necessary for a proposed project, the project sponsor would require that the construction contractor limit pile driving activity to the least disturbing hours of the day. To further mitigate pile driving and/or other extreme noise-generating construction impacts, a set of site-specific noise attenuation measures shall be completed under the supervision of a qualified acoustical consultant. No extreme noise-generating activities shall be allowed on weekends and holidays. Techniques included may include but not be limited to the following:
Erect temporary plywood noise barriers around the
construction site,;
Implement “quiet” pile driving technology (such as pre- drilling of piles and the use of more than one pile driver to shorten the total pile driving duration), where feasible, in consideration of geotechnical and structural requirements and conditions;
Use noise control blankets on building structures as
buildings are erected to reduce noise emission from the site; Evaluate the feasibility of noise control at the receivers by temporarily improving the noise reduction capability of adjacent buildings; and
Monitor the effectiveness of noise attenuation measures by taking noise measurements.
Review and approve
project specifications and
grading and construction
plans for inclusion of
specifications in this
measure.
Inspect site during
construction to ensure
compliance with project
specifications and
grading and construction
plans.
Prior to issuance of
building and grading
permit(s)
Field inspections
during construction
City of Napa
Community
Development
Department;
building official; field
inspector
MM 4.I-1c: The City shall condition approval of projects in the Planning Area near receptors sensitive to construction noise, such as residences and schools, such that, in the event of a justified complaint regarding construction noise, the City would have the ability to require changes in the construction practices to address the noise complaints.
Review all noise
complaints received;
assess whether noise
complaints are justified;
alert Project Sponsor of
revised construction
practices.
Project applicant will post
At approval of
project
specifications,
grading permits and
building permits
Ongoing during
Community
Development
Department; code
enforcement officer
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the City’s noise complaint
procedure in publicly
accessible locations at
each construction site.
Inspect site during
construction to ensure
compliance with revised
construction practices.
demolition, grading,
construction
Ongoing during
demolition, grading,
construction
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