HomeMy WebLinkAboutTC Res 2008-03-19 (2)
RESOLUTION 13-2008
A RESOLUTION OF THE TOWN COUNCIL OF THE TOWN OF TIBURON
ADOPTING FINDINGS RELATING TO THE APPROVAL OF THE STONY HILL
DEVELOPMENT (FORMERLY CALLED "LING RESIDENTIAL
DEVELOPMENT") PRECISE DEVELOPMENT PLAN PROJECT PURSUANT TO
THE CALIFORNIA ENVIRONMENTAL QUALITY ACT
ASSESSOR PARCEL NUMBER 55-261-10
SECTION 1 - INTRODUCTION
WHEREAS, on January 4, 2006 the Town Council of the Town of Tiburon adopted
Resolution No. 04-2006 certifying the Final Environmental Impact Report (EIR) for the Stony
Hill Development (formerly called "Ling Residential Development", PD#24) Project.
WHEREAS, an Addendum to the EIR, dated December, 2007, was prepared to evaluate the
current three-lot proj ect design. The Planning Commission considered the certified EIR and
the EIR Addendum in making its recommendation to the Town Council on the merits of the
project. The Planning Commission held duly noticed public hearings on the application on
February 13 and February 27, 2008. Following the public hearings, the Planning Commission
adopted Resolution No. 2008-02 recommending to the Town Council conditional approval of
the project as evaluated in the EIR Addendum for the project.
WHEREAS, the EIR identified certain significant environmental impacts caused by the Stony
Hill Development Project (PD#24) and recommends specific mitigation measures to reduce
certain of these impacts to a less-than-significant level and the Town Council has certified the
EIR as being adequate according to CEQA and has reviewed and considered the information
in the EIR and the entire record; therefore, the Town Council makes specific findings, as
follows, for each significant impact, pursuant to CEQA 21081, based not only on the EIR, but
evidence in the entire record, including written and oral testimony to the Planning
Commission and Town Council.
SECTION 2 - LOCATION AND CUSTODIAN OF DOCUMENTS
The Recording of Proceeding ("Record") upon which the Town Council bases these findings
and its actions and determinations regarding the proposed project includes, but is not limited
to:
1 The Final EIR, which consists of the Ling Residential Development Draft
Environmental Impact Report (April 2005); the Ling Residential Development
Final Environmental Impact Report Response to Comments Document (November
2005); the Stony Hill Development (Formerly Called "Ling Residential
Development'') Addendum to the Ling Residential Development Final EIR
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Resolution No. 13-2008
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(December 2007), in addition to any appendices and technical reports cited in
and/or relied on in preparing the Final EIR.
2 All staff reports, Town files and records and other documents, prepared for and/or
submitted to the Planning Commission, Town Council and/or Town staff relating
to the Final EIR, addendums, and/or the proposed project.
The location and custodian of the Record is the Town of Tiburon Community Development
Director, 1505 Tiburon Boulevard, Tiburon, California, 94920.
SECTION 3 -- SIGNIFICANT IMPACTS THAT CAN BE MITIGATED TO A LESS-
THAN-SIGNIFICANT LEVEL
The FEIR indicates that certain significant environmental impacts will or may result from
approval of the proposed project. The FEIR concludes that each of these significant impacts
can be mitigated to a less-than-significant level. In response to those significant impacts so
identified in the FEIR discussed in this Section 3, alterations have been required to the
proposed project or mitigation has been incorporated into or imposed on the project which
will avoid or substantially lessen each significant environmental impact identified in this
section. The Town Council hereby finds that each and every mitigation measure identified in
this section is feasible and has been imposed on or incorporated into the proposed project, and
the Town Council further finds that the significant impacts described in this section have been
reduced to a less-than-significant level by incorporation of these mitigation measures. The
Town Council adopts the findings contained herein.
Geology and Soils
Impact 3.1-A Residences and other improvements could/ail due to landslides on the site.
Facts and Evidence
In Section 3.1 (Geology and Soils) the EIR found that project improvements could fail due to
existing landslides on the site. . This would constitute a potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that impacts
associated with landslides will be mitigated to a less-than-significant level by the imposition
of Mitigation Measures 3.1-A.l to 3.1-A.3. Accordingly, changes or alterations have been
required in, or incorporated into, the proposed project which mitigate or avoid the significant
effects on the environment. The impact is mitigated to a less-than-significant level.
Rationale
Mitigation Measures 3.1- A.l to 3.1- A.3 include specific measures to repair existing landslides
so that future homes and other improvements would not fail and that landslides would be
stabilized consistent with the Town's Landslide Repair Policy.
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Impact 3.1-B Residences and other improvements could fail and residents could be injured
by seismic events.
Facts and Evidence
In Section 3.1 (Geology and Soils) the EIR found that project improvements could fail due to
seismic events occurring in the area or region. This would constitute a potentially significant
impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that impacts
associated with seismic activity will be mitigated to a less-than-significant level by the
imposition of Mitigation Measures 3.1-B.l and 3.1-B.2. Accordingly, changes or alterations
have been required in, or incorporated into, the proposed project which mitigate or avoid the
significant effects on the environment. The impact is mitigated to a less-than-significant
level.
Rationale
Mitigation Measures 3.1-B.l and 3.1-B.2 include specific measures to design project
improvements to withstand probable earthquakes.
Impact 3.1-C Development of homes and other improvements on the expansive soils of the
site could result in the failure of these improvements.
Facts and Evidence
In Section 3.1 (Geology and Soils) the EIR found that project improvements could fail due to
expansive soils occurring on the site. This would constitute a potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that impacts
associated with seismic activity will be mitigated to a less-than-significant level by the
imposition of Mitigation Measures 3.1-C.l to 3.1-C.5. Accordingly, changes or alterations
have been required in, or incorporated into, the proposed project which mitigate or avoid the
significant effects on the environment. The impact is mitigated to a less-than-significant
level.
Rationale
Mitigation Measures 3.1-C.l to 3.1-C.5 include specific geotechnical design measures to
design improvements and construct all proposed improvements to withstand any soil
constraints on the site.
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Hydrology
Impact 3.2-A Development of the project would create new impervious surfaces,
increasing the rate and amount of storm water runoff. This runoff could contribute to local
or downstream flooding and/or changes in the direction or mode of area drainage.
Facts and Evidence
In Section 3.2 (Hydrology) the EIR found that the project would increase runoff from the site
and cause flooding downstream of the site. This would constitute a potentially significant
impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that impacts
associated with downstream flooding will be mitigated to a less-than-significant level by the
imposition of Mitigation Measure 3.2-A.1. Accordingly, changes or alterations have been
required in, or incorporated into, the proposed project which mitigate or avoid the significant
effects on the environment. The impact is mitigated to a less-than-significant level.
Rationale
Mitigation Measure 3.2-A.l includes construction of on-site detention facilities to maintain
peak flows from the site at the pre-project level, so there would be no increase in peak runoff
from the project site.
Impact 3.2-B The proposed project storm drain outfall in the intermittent creek could
cause locally complex flow patterns that could destabilize the western creekbank and the
energy dissipation structure installed for the project.
Facts and Evidence
In Section 3.2 (Hydrology) the EIR found that runoff from the project could cause streambank
erosion of the receiving stream. This constitutes a potentially significant erosion and
sedimentation impacts.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that impacts on
erosion and downstream sedimentation will be mitigated to a less-than-significant level by the
imposition of Mitigation Measures 3.2-B.l and 3.2-B.2. Accordingly, changes or alterations
have been required in, or incorporated into, the proposed project which mitigate or avoid the
significant effects on the environment. The impact is mitigated to a less-than-significant
level.
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Rationale
This mitigation requires bank stabilization at the pipe outlet and installation of a stable outlet
pIpe.
Impact 3.2-C Project development, including the repair of on-site landslides, would result
in the construction of 0.9 acres of impervious surfaces, removal of site vegetation and the
grading of large portions of the site. Construction of hillside residences and related
improvements would also result in increases in concentrated downslope runoff, which
could erode the steep, regraded hillslope soils.
Facts and Evidence
In Section 3.2 (Hydrology) the EIR found that runoff from the project would require extensive
landslide repair and that soils could erode from these repair sites and cause sedimentation of
downstream drainage channels. These constitute potentially significant erosion and
sedimentation impacts.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that impacts on
erosion and downstream sedimentation will be mitigated to a less-than-significant level by the
imposition of Mitigation Measures 3.2-C.l and 3.2-C.2. Accordingly, changes or alterations
have been required in, or incorporated into, the proposed project which mitigate or avoid the
significant effects on the environment. The impact is mitigated to a less-than-significant
level.
Rationale
This mitigations require completion and implementation of an Erosion Control Plan and
connecting subsurface drains to the surface drainage ditch and/or the principal IS-inch storm
drain running downslope from the Stony Hill Road cul-de-sac. Mitigation Measure 3.2-C.1
identifies what elements are to be included in that plan. The plan will be monitored for
effectiveness by the Town. Implementation of this measure will reduce this impact to a less-
than-significant level.
Traffic and Circulation
Impact 3.3-B Sight distance limitations at the Stony Hill Road/Gilmartin Drive
intersection and resultant existing safety concerns would increase with the addition of
project traffic to this intersection.
Facts and Evidence
In Section 3.3 (Traffic and Circulation) the EIR found that the project would increase traffic
volumes at the Stony Hill Road/Gilmartin Drive intersection. There is inadequate sight
distance at this intersection. This constitutes a potentially significant traffic safety impact.
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Finding
Based upon the EIR and the entire record, the Town Council hereby finds that the project and
cumulative-plus project impacts on the left turn lane queuing capacity will be mitigated to a
less-than-significant level by the imposition of Mitigation Measure 3.3-A.l. Accordingly,
changes or alterations have been required in, or incorporated into, the proposed proj ect which
mitigate or avoid the significant effects on the environment. The impact is mitigated to a less-
than-significant level.
Rationale
Mitigation Measure 3.3-A.l requires installation of a stop sign on the southbound Gilmartin
Drive approach to the Stony Hill Road intersection, plus several warning signs. These
improvements would reduce the risk of accident due to inadequate sight lines.
Impact 3.3-D Over the several-month construction phase, the project would add from 11 to
22 semi-trailer trucks (depending upon the grading alternative), as well as other
construction traffic, during project construction phases to Stony Hill Road, Gilmartin Drive
and Tiburon Boulevard.
Facts and Evidence
In Section 3.3 (Traffic and Circulation) the EIR found that project construction traffic would
damage pavement and cause traffic congestion. This constitutes a potentially significant
traffic impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that impacts on the
driveway will be mitigated to a less-than-significant level by the imposition of Mitigation
Measure 3.3-D.1. Accordingly, changes or alterations have been required in, or incorporated
into, the proposed project which mitigate or avoid the significant effects on the environment.
The impact is mitigated to a less-than-significant level.
Rationale
Mitigation Measure 3.3-D.l requires development and compliance with a construction traffic
control plan and roadway (pavement) mitigation plan. This plan will limit construction traffic
hours and parking and require pavement repair where warranted.
Impact 3.3-E The project plus other cumulative traffic would increase traffic volumes at the
Stony Hill Road/Gilmartin Drive and the Gilmartin Drive/Tiburon Boulevard intersections.
Facts and Evidence
In Section 3.3 (Traffic and Circulation) the EIR found that project plus other projected new
development would cause southbound Gilmartin Drive approach would deteriorate from LOS
E (2020 without project conditions) to LOS F operation, with 4.2 seconds added delay due to
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the project during the weekday AM commute peak traffic hour, and continue to operate at
LOS E (2020 without project conditions), with 3.0 seconds delay added due to the project
during the PM commute peak traffic hour. The intersection would operate worse than LOS D
with delay exceeding 35 seconds. This exceeds the Caltrans criterion for Tiburon Boulevard
and constitutes a potentially significant cumulative impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the traffic safety impact will be mitigated to a less-than-significant
level by the imposition of either Mitigation Measure 3.3-E.l or 3.3-E.2. Mitigation Measure
3.3-E.3 would also apply. Accordingly, changes or alterations have been required in, or
incorporated into, the proposed project which mitigate or avoid the significant effects on the
environment. The impact is mitigated to a less-than-significant level.
Rationale
Mitigation Measure 3.3- E.l would add a southbound right turn lane on Gilmartin Drive, while
Mitigation Measure 3.3-E.3 would add a merge/acceleration lane on Tiburon Boulevard at the
Gilmartin Drive intersection. Implementation of either of these two measures will mitigate
this impact to a less-than-significant level. Mitigation Measure 3.3-E.3 states that the project
would be fiscally responsible for its fair share of either alternative.
Noise
Impact 3.4-C Construction of project improvements would generate construction noise
over a period exceeding one year.
Facts and Evidence
In Section 3.4 (Noise) the EIR found that proj ect construction would generate substantial
periodic noise levels in the vicinity of the site. These levels would exceed existing ambient
levels. This would be a temporary but potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that construction
period noise impacts due will be mitigated to a less-than-significant level by the imposition of
Mitigation Measures 3.4-C.l through 3.4-C.5. Accordingly, changes or alterations have been
required in, or incorporated into, the proposed project which mitigate or avoid the significant
effects on the environment. The impact is mitigated to a less-than-significant level.
Rationale
These mitigation measures will reduce construction noise impacts to a less-than-significant
level by implementing the measures set forth in the Town of Tiburon's Municipal Code
Chapter 13 construction hour limitations. In addition, construction equipment mufflers and
maintenance and idling prohibitions will be required. A Noise Disturbance Coordinator will
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be responsible for responding and addressing construction noise complaints. Implementation
of these measures will reduce this impact to a less-than-significant level.
Aesthetic Quality
Impact 3.5-A Proposed residences would change views from public and private vantage
points.
Facts and Evidence
In Section 3.5 (Visual Quality) the EIR found that with implementation of the project the
visual impacts of proposed buildings looking from public and private open spaces would be a
potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the visual impact will be mitigated to a less-than-significant level by
the imposition of Mitigation Measures 3.5-A.l through 3.5-AA. Accordingly, changes or
alterations have been required in, or incorporated into, the proposed project which mitigate or
avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
Rationale
Mitigation Measure 3.5-A.l limits building size to be consistent with surrounding residences.
Mitigation Measure 3.5-A.2 requires that the colors of new homes not significantly contrast
with surrounding vegetation. Mitigation 3.5-A.3 allows the Town to require additional
landscaping when conducting Site Plan and Architectural Review. Mitigation Measure 3.5-
AA requires a photo simulation of each proposed residence and its ancillary improvements be
submitted at the time of the Site Plan and Architectural Review application for each residence,
with the photosimulation prepared from the same location as Visualization 2 as depicted in
the EIR Addendum dated December 2007. The purpose of the design-review-Ievel
simulations is to ensure that the level of visual impact is comparable to that disclosed in the
EIR and is not materially greater. The mitigation measures will reduce the visual impact to a
less-than-significant level.
Impact 3.5-B Project retaining walls would change views.
Facts and Evidences
In Section 3.5 (Visual Quality) the EIR found that with implementation of the project the
visual impacts of retaining walls looking from private and public vantage points surrounding
the site would be a potentially significant impact.
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Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the visual impact will be mitigated to a less-than-significant level by
the imposition of Mitigation Measure 3.5-B.1. Accordingly, changes or alterations have been
required in, or incorporated into, the proposed project which mitigate or avoid the significant
effects on the environment. The impact is mitigated to a less-than-significant level.
Rationale
Mitigation Measure 3.5-B.l requires landscape screening and/or terraced walls with
landscaping to reduce the visual impact of a solid wall. The mitigation measures will reduce
the visual impact to a less-than-significant level.
Impact 3.5-C Projectfencing would change views in the area.
Facts and Evidence
In Section 3.5 (Visual Quality) the EIR found that with implementation of the project the
visual impacts of new fencing looking from private and public vantage points surrounding the
site would be a potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the visual impact will be mitigated to a less-than-significant level by
the imposition of Mitigation Measures 3.5-C.l and 3.5-C.2. Accordingly, changes or
alterations have been required in, or incorporated into, the proposed project which mitigate or
avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
Rationale
The mitigation measures limit the area to be fenced and require wood and wire fencing that is
minimally visible from off the site. These mitigation measures will reduce the visual impact to
a less-than-significant level.
Impact 3.5-D Project V-ditches would alter views in the area.
Facts and Evidence
In Section 3.5 (Visual Quality) the EIR found that with implementation of the project the
visual impacts of project drainage ditches looking from private and public vantage points
surrounding the site would be a potentially significant impact.
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Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the visual impact will be mitigated to a less-than-significant level by
the imposition of Mitigation Measures 3.5-D.l through 3.5-D.3. Accordingly, changes or
alterations have been required in, or incorporated into, the proposed project which mitigate or
avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
Rationale
The mitigation measures require the smallest feasible ditch, with use of vegetated swales if
feasible. If vegetated swales are not feasible, then the concrete will be colored and plantings
will be used to screen or buffer views of the ditches. The mitigation measures will reduce the
visual impact to a less-than-significant level.
Impact 3.5-E Project lighting would change nighttime views in the area.
Facts and Evidence
In Section 3.5 (Visual Quality) the EIR found that with implementation of the project the
visual impacts of project lighting looking from private and public vantage points surrounding
the site would be a potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the visual impact will be mitigated to a less-than-significant level by
the imposition of Mitigation Measures 3.5-E.l to 3.5-E.6. Accordingly, changes or alterations
have been required in, or incorporated into, the proposed project which mitigate or avoid the
significant effects on the environment. The impact is mitigated to a less-than-significant
level.
Rationale
The first five mitigation measures require that outdoor lighting be minimized and designed
not to escape off the site. Mitigation Measure 3.5-E.5 requires that the new access street be
screened or aligned so that headlights do not intrude on an existing residence. The mitigation
measures will reduce the visual impact to a less-than-significant level.
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Fire and Emergency Medical Response
Impact 3. 7-A The project would generate calls for fire response and emergency medical
aid.
Facts and Evidence
In Section 3.7 (Fire Protection and Emergency Medical Response) the EIR found that with
implementation of the project there would be an increased demand for fire protection. This
would be a potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project, the fire and emergency response impact will be mitigated to a less-
than-significant level by the imposition of Mitigation Measure 3.7-A.1. Accordingly, changes
or alterations have been required in, or incorporated into, the proposed project which mitigate
or avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
Rationale
Mitigation Measure 3.7-A.l requires that the project fund the cost of purchasing and installing
a traffic signal preemptor for the signal at the intersection of Tiburon Boulevard and San
Rafael Avenue and a traffic signal emitter for one of TFPD's vehicles. The mitigation
measure will reduce the fire and emergency response impact to a less-than-significant level.
Impact 3. 7-C Homes on the site would be at risk from wildland fires. There is a risk of
wildfire igniting during project construction.
Facts and Evidence
In Section 3.7 (Fire Protection and Emergency Response) the EIR found that residences on
the project site would be subject to wildland fires. This would be a potentially significant
impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the fire impact will be mitigated to a less-than-significant level by the
imposition of Mitigation Measures 3.7-C.l through 3.7-CA. Accordingly, changes or
alterations have been required in, or incorporated into, the proposed project which mitigate or
avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
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Rationale
These mitigation measures ensure that the project would be constructed consistent with the
requirements of the Tiburon Fire Protection District and that future lot owners will be
responsible for maintaining landscaping in a fire resistant fashion in common open space
areas, common landscape areas, and private dedicated open space. The mitigation measures
will reduce the fire impact to a less-than-significant level.
Impact 3.9-A The project would generate demand for wastewater collection, treatment,
and disposal service.
Wastewater Collection, Treatment, and Disposal
Facts and Evidence
In Section 3.9 (Wastewater Collection, Treatment, and Disposal) the EIR found that unless
the project was constructed per the requirements of Sanitary District #5, there could be
impacts to the wastewater system. This would be a potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that due to changes
in the proposed project the wastewater impact will be mitigated to a less-than-significant level
by the imposition of Mitigation Measure 3.9-A.l. Accordingly, changes or alterations have
been required in, or incorporated into, the proposed project which mitigate or avoid the
significant effects on the environment. The impact is mitigated to a less-than-significant
level.
Rationale
Mitigation Measure 3.9-A.l requires that the project be constructed per the requirements of
Sanitary District #5. The mitigation measure will reduce the wastewater impact to a less-
than-significant level.
Recreation
Impact 3. 11-A The proposed public open space would not allow safe access to existing open
space and would cause soil erosion.
Facts and Evidence
In Section 3.11 (Recreation) the EIR found that the proposed public access to Town-owned
open space would potentially not allow safe access and would potentially cause erosion. This
would be a potentially significant impact.
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Finding
Based upon the EIR and the entire record, the Town Council hereby finds that recreation
impacts will be mitigated to a less-than-significant level by the imposition of Mitigation
Measure 3.1-A.2. Mitigation Measures 3.11-A.l and 3.11-A.3 are rejected as unnecessary to
reduce or avoid potentially significant environmental impacts associated with the project. The
requirement to make guest parking spaces available to the public near the future pedestrian
trail could encourage unintended levels of public use of the trail, which could prove to be
disruptive to the residents of this neighborhood. The Town's intent is to have the trail
easement provide local access to the adjacent open space area, and the securing of public
access easements up to and including the trail alignment secures that purpose, making the
public parking spaces described in Mitigation Measure 3.11-A.3 unnecessary. The
requirement to widen the public access easement for the pedestrian trail, as described in
Mitigation Measure 3.11- A.l is unnecessary as there is adequate space within the 20 foot
width of the proposed easement to route a 3 to 5 foot wide path, using switchbacks and/or
other commonly-practiced methods, to reduce trail slope to an acceptable level for the types
of recreational hikers who would be expected to use the trail and to minimize erosion.
Accordingly, changes or alterations have been required in, or incorporated into, the proposed
project which mitigate or avoid the significant effects on the environment. The impact is
mitigated to a less-than-significant level.
Rationale
Mitigation Measures 3.11-A. 2 requires a public access easement over the on-site street to the
trail easement to ensure public access to the proposed trail and open space beyond. This
measure will reduce the impact to recreation to a less-than-significant level.
Other Resources
Impact 3. 12-A Air Quality
Facts and Evidence
In Section 3.12 (Other Resources) the EIR found that construction actIvItIes, including
grading would generate dust into the air and that proj ect construction and use would generate
greenhouse gases. This is a potentially significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that construction
period impacts due to dust will be mitigated to a less-than-significant level by the imposition
of Mitigation Measures 3.12-A.l through 3.12-A.ll. Accordingly, changes or alterations
have been required in, or incorporated into, the proposed project which mitigate or avoid the
significant effects on the environment. The impact is mitigated to a less-than-significant
level. Based upon the EIR and the entire record, the Town Council hereby finds that potential
greenhouse gas impacts due to project implementation will be mitigated to a less-than-
significant level by the imposition of Mitigation Measures 3.12-A.12. Accordingly, changes
or alterations have been required in, or incorporated into, the proposed project which mitigate
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or avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
Rationale
Mitigation Measures 3.12-A.l through 3.12-A-ll will reduce dust emissions from grading
and other construction activities to a less-than-significant level by implementing dust control
measures. These dust control measures include preventing visible dust clouds from extending
beyond construction sites, watering all active construction areas at lest twice daily and more
often during windy period and covering all hauling truck or maintaining two feet of freeboard.
Implementation of these measures will reduce this impact to a less-than-significant level.
Mitigation Measure 3.12-A.12 requires energy efficiency, active and passive solar design,
solar water heating, and that at least 50% of project energy demand be generated on-site.
Implementation of this mitigation measure will reduce this impact to a less-than-significant
level.
Impact 3. 12-A (second part) Asbestos
Facts and Evidence
In Section 3.12 (Other Resources) the EIR found that it is possible that harmful levels of
asbestos could be exposed during landslide repair activities. This would be a potentially
significant impact.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that potential
impacts from asbestos will be mitigated to a less-than-significant level by the imposition of
Mitigation Measures 3.12-E.l and 3.12-E.2. Accordingly, changes or alterations have been
required in, or incorporated into, the proposed project which mitigate or avoid the significant
effects on the environment. The impact is mitigated to a less-than-significant level.
Rationale
Mitigation Measures 3.12- E.l requires that excavated material be tested for the presence of
asbestos. Mitigation Measure 3.12-E.2 requires compliance with the State's "Asbestos
Airborne Toxic Control Measures for Construction, Grading, Quarrying, and Surface Mining
Operations" (California Code of Regulations, Title 17, Section 93105). This regulation
requires the applicant to prepare an Asbestos Dust Mitigation Plan which must be approved
by the BAAQMD prior to the initiation of grading. Implementation of these measures will
reduce this impact to a less-than-significant level.
Impact 3. 12-B Biological Resources
Facts and Evidence
In Section 3.12 (Other Resources) the EIR found that the project could remove native oaks
and disrupt nesting raptors. This would be a potentially significant impact.
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Finding
Based upon the EIR and the entire record, the Town Council hereby finds that potential
impacts on biological resources will be mitigated to a less-than-significant level by the
imposition of Mitigation Measures 3.12-B.l and 3.12-B.2. Accordingly, changes or
alterations have been required in, or incorporated into, the proposed project which mitigate or
avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
Rationale
Mitigation Measure 3.12-B.l requires avoidance of trees where raptors are nesting.
Mitigation Measure 3.12-B.2 requires oak tree replanting at a 3:1 ratio for any oak removed
that is over 5 inches diameter at breast height. Implementation of this measure will reduce
this impact to a less-than-significant level.
Impact 3. 12-C Cultural Resources
Facts and Evidence
In Section 3.12 (Other Resources) the EIR found that while no discernible impacts to
archaeological resources are anticipated and no human remains are expected to be present on
the site, the possibility cannot be precluded that prehistoric cultural deposits and features are
present below the ground surface and could be damaged during land alteration activities.
Finding
Based upon the EIR and the entire record, the Town Council hereby finds that potential
impacts on subsurface cultural resources will be mitigated to a less-than-significant level by
the imposition of Mitigation Measures 3.12-C.l through 3.12-C.3. Accordingly, changes or
alterations have been required in, or incorporated into, the proposed project which mitigate or
avoid the significant effects on the environment. The impact is mitigated to a less-than-
significant level.
Rationale
Mitigation Measures 3.12-C.l through 3.12-C.3 require that the applicant shall implement
specific measures in the event that archaeological artifacts or cultural resources deposits are
encountered during future grading, excavation, or other land alterations or in the event that
human skeletal remains are discovered anywhere on the site. Implementation of these
measures will reduce this impact to a less-than-significant level.
SECTION 4 - IMPACTS FOUND NOT TO BE SIGNIFICANT
During the CEQA scoping process applied to the project, some environmental impacts were
dismissed with a "Less- Than-Significant Impact" response on the Initial Study, on the ground
that there was no fair argument that such impacts would occur. The Town Council finds that
TIBURON TOWN COUNCIL
RESOLUTION NO. 13-2008
3/19/08
15
there is no substantial evidence in the record that the decisions made in the Initial Study
(included in the EIR appendix) to dismiss such theoretical impacts were erroneous, nor is
there substantial evidence that any impact that might occur has not been adequately examined
in the EIR.
Additionally, the Town Council finds, based on the EIR and the record that the following
impacts identified in the EIR are less-than-significant and do not require mitigation.
Impact 3.3-A Project traffic would increase traffic volumes at the Stony Hill Road/Gilmartin
Drive and the Gilmartin Drive/Tiburon Boulevard intersections.
Impact 3.3-C The project access driveway serving Lot 1 could pose safety concerns.
Impact 3.4-A The project would not be exposed to or generate excessive noise.
Impact 3.5-F Landslide repair and project construction will result in short-term views of
substantial cut and fill grading.
Impact 3.6-A The project would generate about 5-6 students.
Impact 3.6-B Project development, combined with development of other projects could
result in school overcrowding.
Impact 3.7-B The project site could have inadequate fireflow.
Impact 3.7-D Project development, combined with development of other anticipated
projects, could contribute to cumulative demands for fire protection services and emergency
medical services.
Impact 3.8-A The project would generate demand for water service.
Impact 3.8-B Project development, combined with development of other anticipated projects
in the planning area, would contribute to cumulative demands on water facilities.
Impact 3.9-B Project development, combined with development of other anticipated
projects, would contribute to cumulative demands on wastewater facilities.
Impact 3.10-A The project would generate calls for police response.
Impact 3.10-B Project development, combined with development of other anticipated projects
in the planning area, would contribute to cumulative demands for police services.
SECTION 5 - ADOPTION OF FINDINGS
The Town Council hereby adopts the Findings of Fact and Rationales as set forth in Sections
1 through 3 of this Resolution.
TIBURON TOWN COUNCIL
RESOLUTION NO. 13-2008
3/1 9/08
16
PASSED AND ADOPTED at a regular meeting of the Town Council of the Town ofTiburon
held on March 19,2008 by the following vote:
AYES:
COUNCILMEMBERS:
Berger, Collins, Fredericks, Gram, Slavitz
NOES:
COUNCILMEMBERS:
None
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DIANE CRANE IAcffl>I~ TOwN CLERK
TIBURON TOWN COUNCIL
RESOLUTION NO. 13-2008
3/19/08
17