HomeMy WebLinkAboutCC Resolution 14364 (2017 Storm Damage Repair)RESOLUTION NO. 14364
A RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SAN RAFAEL AUTHORIZING
THE CITY MANAGER TO EXECUTE A PROFESSIONAL SERVICES AGREEMENT WITH
MILLER PACIFIC ENGINEERING GROUP FOR GEOTECHNICAL INVESTIGATION, SITE
ANALYSES, AND REPORTS ASSOCIATED WITH THE 2017 STORM DAMAGE SITES IN A
TOTAL NOT-TO-EXCEED AMOUNT OF $70,108
______________________________________________________________________________
WHEREAS, in January 2017 the City of San Rafael as well as other communities
throughout the state of California experienced a significant storm event; and
WHEREAS, on February 14, 2017 the President declared a major disaster making
federal disaster aid available to 34 counties including Marin and the Cities within Marin; and
WHEREAS, from January 3, 2017 to January 12, 2017 several downhill slides occurred
at five locations within San Rafael; and
WHEREAS, geotechnical investigations of these sites are needed to develop
engineering data associated with the soil condition to support the design of the repairs at these five
locations; and
WHEREAS, on June 1, 2017 the Department of Public Works sent out a request for
proposals to 7 geotechnical firms and on June 15, 2017, received one proposal for preparing soils reports
for each of the five storm damage sites; and
WHEREAS, the cost associated with preparation of these reports is partially
reimbursable from the federal government, and State of California disaster assistance program; and
WHEREAS, staff has reviewed the proposal from Miller Pacific Engineering Group and
found it to be complete and within industry standards;
NOW, THEREFORE, BE IT RESOLVED that the Council of the City of San Rafael
hereby approves and authorizes the City Manager to execute a Professional Services Agreement between
Miller Pacific Engineering Group and the City, in the form attached hereto as Exhibit “1” and
incorporated herein by reference, subject to final approval as to form by the City Attorney, in an amount
not to exceed $70,108.
WHEREAS, funds in the total amount of $70,108 will be appropriated from the Gas Tax
Fund (#206),
BE IT FURTHER RESOLVED that the Director of Public Works is hereby authorized
to take any and all such actions and make changes as may be necessary to accomplish the purpose of this
resolution.
I, ESTHER C. BEIRNE, Clerk of the City of San Rafael, hereby certify that the
foregoing resolution was duly and regularly introduced and adopted at a regular meeting of the Council
of said City on the 17th day of July 2017, by the following vote, to wit:
AYES: COUNCILMEMBERS: Bushey, Colin, Gamblin, McCullough & Mayor
Phillips
NOES: COUNCILMEMBERS: None
ABSENT: COUNCILMEMBERS: None
ESTHER C. BEIRNE, City Clerk
File No.: 16.11.46
PROPOSAL FOR THE
Geotechnical Investigation, Site Analyses and Reports
2017 Storm Damage
San Rafael, California
City of San Rafael
Department of Public Works
111 Morphew Street
San Rafael, California 94901
June 15, 2017
Proposal for Geotechnical Investigation, Site Analyses and Reports Page 1
2017 Storm Damage Sites
San Rafael, CA
June 15, 2017
City of San Rafael
Department of Public Works
111 Morphew Street
San Rafael, California 94901
Attn: Mr. Kevin McGowen, P.E.
Re: Executive Summary
Proposal for Geotechnical Investigation and Analyses
2017 Storm Damage Sites
San Rafael, California
We are pleased to have the opportunity to submit our proposal to provide geologic and geotechnical
engineering services for stabilization of five sites in San Rafael that were damaged during strong 2017
winter storms. As a local Marin County firm, the successful completion of this project is important to
maintain our reputation in the community and professional relationships with the City of San Rafael.
Having completed hundreds of projects in the San Rafael area, we are familiar with the site conditions
in the vicinity of the project site and with the nuances of working within Marin County. We have previously
worked with City of San Rafael on over 100 projects many of which relate to slope stabilization.
Miller Pacific Engineering Group would perform the work from our Novato office. The attached proposal
will demonstrate our qualifications to perform the work, summarize our proposed scope of services, and
provide our fee estimate. We welcome discussions with the City to refine the scope and fee estimate
as needed to meet the City’s goals and budgets.
The following individual has the authority to negotiate and contractually bind Miller Pacific Engineering
Group. We appreciate the opportunity to work with you on this exciting and important project.
Sincerely,
Scott Stephens, President
Geotechnical Engineer No. 2398
(Expires 6/30/19)
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San Rafael, CA
1.0 INTRODUCTION
We are pleased to respond to the City of San Rafael’s (City) request for proposal to perform geotechnical
investigations to be used in the stabilization of five sites damaged during the 2017 winter storms. The
sites requiring investigation include; 70 Irwin Street, 80 Upper Toyon, 121 Irwin Street, 76 D Street and
21 San Pablo in San Rafael, California. We have previously inspected the sites and provided
geotechnical consultation for emergency “temporary” stabilization. The projects vary from relatively
shallow smaller sloughs to moderately sized landslides
1.1 Project Objectives and Key Issues
We have reviewed the materials in the Request for Proposal (RFP) and understand the project objective
is to provide geotechnical investigation reports for use in designing and constructing long-term slope
stabilization at the various project sites. The following is a brief summary of key issues pertaining to this
project:
Evaluate the geologic and geotechnical site conditions (i.e., subsurface geology, groundwater,
slope stability, settlement, and others) in order to develop alternative repair concepts and provide
geotechnical design criteria for use in the engineering and analyses of the repairs.
Geotechnical exploration using equipment suitable for the site conditions and laboratory testing
to determine the subsurface conditions and engineering properties of the on-site soil and bedrock.
This data will be used to assess reuse for slope stabilization options.
Evaluation of commonly considered geologic and geotechnical hazards and mitigation measures
consistent with the geology, soils, and seismicity section of California Environmental Quality Act
(CEQA)
2.0 SCOPE OF WORK
This section outlines our technical approach for key elements of the project and is organized by the tasks
needed to complete the investigations as identified in the RFP.
2.1 Project Management and Coordination:
Miller Pacific will attend project meetings or conferences as requested by the City for project updates and
at select decision points. We will coordinate the work of subconsultants as needed. Per the RFP, we
have planned for three meetings or progress phone calls with City staff. These meetings will provide an
opportunity to discuss ongoing work, present findings, and solicit feedback.
2.2 Review Available Documents, Site Inspections and Exploration Plan:
We will review available previous studies, topographic plans, our in-house materials, and other data
relevant to the geotechnical investigation. The existing data will be complied and organized.
We will perform site inspections to observe existing conditions. The site inspections shall include visual
confirmation of existing structures and utilities, evaluation of access for exploration equipment, and
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San Rafael, CA
marking potential exploration locations for Underground Service Alert (USA) notification and utility
clearance. The exploration locations will be adjusted to the extent possible to reduce site impacts.
Deliverable: Site exploration plans showing proposed exploration locations, exploration types, depths,
sample method and backfilling method. The subsurface exploration work plan will be issued as a draft.
We will meet with the City to discuss the draft plan and incorporate any comments into a final plan.
2.3 Geotechnical Exploration and Testing:
Following the review and evaluation of existing data, Miller Pacific Engineering Group will perform
geotechnical exploration and laboratory testing that will include the following:
2.3.1 Exploration Permits, and USA
Miller Pacific will obtain and pay for permits (encroachment and Marin County Environmental Health)
necessary to perform the geotechnical explorations. We expect the City will obtain any required
environmental permits, right of entry, cultural permits/clearances, or access permits. Miller Pacific will be
responsible for contacting Underground Service Alert (USA) to locate utilities, and coordinating with
utilities companies as needed to perform subsurface exploration for the project.
Deliverable: Copies of all required drilling permits.
2.3.2 Geotechnical Exploration
Miller Pacific will coordinate and oversee the approved field exploration in accordance with the standard
of practice. All soil classification, sampling, and logging shall be performed in accordance with ASTM
2488 methods by geologists or engineers under supervision of MPEG’s Certified Engineering Geologist
and California Geotechnical Engineer.
We estimate two to three exploratory borings will be performed at each site to log subsurface conditions
and obtain samples for laboratory testing. A combination of track and portable drill equipment will be
used. Samples will be collected with the Modified California split spoon sampler and Standard
Penetration test sampler, as appropriate for the soil types being samples.
The depth of exploration is estimated to range from about 10 feet to 20 feet below existing grade. Soil
cutting will be used to backfill boreholes or cuttings will be spread on-site if bore holes require grouting.
2.3.4 Laboratory Testing
Geotechnical laboratory testing will be performed on select soil samples collected during the subsurface
exploration program in order to aid in soil classification and development of engineering parameters for
levee evaluation and design. The laboratory testing will include in situ moisture and density, grain-size
distribution, Atterberg limits, corrosion, and unconfined compression strength tests.
Deliverable: The results of the subsurface exploration and laboratory testing will be summarized in
subsurface exploration appendices to be attached to the geotechnical reports. These appendices will
include soil and rock classification charts, boring logs, and laboratory test results.
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2.4 Geotechnical Analyses and Report:
MPEG will analyze the data collected during the field exploration and laboratory testing program and
perform analysis appropriate for the proposed project. The analyses are expected to include the
following:
2.4.1 Geologic Hazards Evaluation
We will evaluate geologic and geotechnical hazards commonly considered as part of the California
Environmental Quality Act (CEQA) process. A full environmental review and impact report is beyond the
currently proposed scope of services. We will help coordinate environmental review and documentation
if required.
2.4.2 Geotechnical Analyses
Engineering analyses of slope stability will be performed. These analyses may include static and pseudo-
static (seismic) stability analyses using SLIDE (version 7.009) software that includes:
Geologic cross-section of the landslide and underlying soil and bedrock conditions. Estimate of
engineering properties of the soil for use in the slope stability model.
Conduct two-dimensional static and pseudo-static slope stability analyses to estimate the
improvement in factor of safety of different stabilization options.
Geotechnical analyses to develop recommendations and criteria (i.e., site grading, subsurface
drainage, active pressures, allowable passive pressure, bearing capacities, tie-back friction, etc.)
for design of the slope stabilization repairs.
2.4.3 Geotechnical Report
Miller Pacific will prepare a Geotechnical Report for each site that provides interpretation of subsurface
conditions based on information collected during exploration. We will summarize geologic hazards,
geotechnical analyses procedures/ results, and provide geotechnical recommendations for the project.
The report will include geotechnical tables, recommendations, design criteria, and figures summarizing
the analyses outlined above. The report will also contain at least two alternatives for slope stabilization
for each site and discussion of possible constructability issues.
Deliverable: Draft and final geotechnical reports for each project site. MPEG will submit a draft report
for City review. A meeting/teleconference with the City will be held to discuss any comments or
questions. Final reports will be submitted once all comments have been adequately addressed, and will
be signed by a Geotechnical Engineer (GE) with current license in the State of California.
2.5 Geotechnical Consultation and Plan Review:
Following issuance of our geotechnical reports, we will be available to consult with the project team to
respond to requests for information or answer any geotechnical questions that may arise during project
design development. We should review the plans as they near completion in order to determine whether
the intent of our geotechnical recommendations has been suitably incorporated.
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Deliverable: Geotechnical plan review and letter providing geotechnical comments, or indicating plans
are in conformance with intent of the geotechnical design.
2.6 Geotechnical Construction Support:
As Geotechnical Engineer of Record for the project, we will respond to requests for information and
review submittals as they relate to the geotechnical portions of the project. We would attend a pre-
construction meeting and make intermittent site visits to confirm geotechnical conditions are as
anticipated, or make recommended field modification if needed.
Although not specifically discussed in the RFP, geotechnical inspection and testing of; site excavation,
subsurface drainage, structure fill compaction, pier drilling/foundation excavations, concrete placement
compressive strength testing, tieback load testing, and roadway baserock/asphalt compaction, will likely
be required for complete geotechnical sign-off. The scope of this work will need to be developed once
repair plans have been prepared.
Deliverable: Geotechnical letter summarizing the results of our construction services and providing our
opinion regarding the Contractor’s compliance with the project plans and specifications.
3.0 PROJECT SCHEDULE
The anticipated project schedule following notice to proceed is summarized below. If the scope of the
project is altered, we can revise and update the schedule to meet project milestones.
Task 1: Subsurface Exploration Plan Two weeks
Task 2: USA marking and permits Two weeks
Task 3: Laboratory Testing Two weeks
Task 3: Subsurface Exploration Two weeks
Task 4: Engineering Analyses One week
Task 5: Draft Reports Two weeks
Task 6: Final Reports One week
Most of the tasks need to occur sequentially, although some tasks may overlap a bit. Total estimated
time to prepare and issue final reports is 10 to 12 weeks.
4.0 STATEMENT OF QUALIFICATIONS
Specific Qualifications for this Project
As a firm with over 25 years of experience in Marin County, Miller Pacific Engineering Group (MPEG)
believe we offer a unique background and knowledge that can be applied to this project to meet the City’s
objectives. MPEG has worked on numerous slope stabilization projects within Marin County and has
applied innovation, creativity, and solutions oriented results to our clients’ needs. The following is a
summary of our qualifications for this project.
The successful completion of the project is important to us in maintaining our professional
relationships with the City of San Rafael and our reputation in the community. Our Novato location
enables us to effectively plan and implement the investigation and preparation of geotechnical
reports.
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We have completed hundreds project within the San Rafael area of Marin County. We are very
familiar with the local site conditions and nuances of working within Marin County.
Cost effective investigation and design. We are a local, small to medium sized firm that can easily
adapt to changes in the design and thinking “outside the box”.
4.1 CONSULTANT TEAM
Miller Pacific will provide a majority of the requested services in-house. We will utilize subconsultants
for exploratory drilling and possibly specialized laboratory testing. Roles, responsibilities and
descriptions are summarized below.
Consultant Roles/Responsibilities
Miller Pacific Engineering Group Project Management, Technical Coordination
Evaluation of Subsurface Conditions
Laboratory Testing
Geologic and Geotechnical Analyses
Geologic and Geotechnical Report
Miller Pacific Engineering Group
Miller Pacific Engineering Group (MPEG) provides clients with special services in the Geosciences by
drawing on forty years of professional expertise in Geology, Civil and Geotechnical Engineering. The
majority of our projects are in the Northern San Francisco Bay Area. With a home office in Novato and
additional offices in Napa and Petaluma (including soil laboratory), the firm serves numerous public
agencies and private clients. Their services span the range of Geotechnical Planning, Geological
Hazards Analysis, Geotechnical Exploration and Testing, Foundation Engineering, Construction
Monitoring, Geo-Civil Engineering and Distressed Property Evaluation. The firm’s resource library
provides a wealth of background information on local geologic and soil conditions, and their project
records document the constructability of their various geotechnical designs. MPEG is an employee-
owned California Corporation and registered as a California Small Business (SBE) and Micro-Business.
MPEG provides a variety of geotechnical and geologic services including:
Geotechnical Engineering: Feasibility Studies, Geotechnical Investigations, Earthquake Engineering,
Site Grading Criteria, Stability and Settlement Analyses, Foundation Design, Distressed Property
Evaluation, Forensic Studies, and Expert Witness.
Engineering Geology: Geologic Hazard Investigation, Fault and Seismicity Studies, Environmental
Impact Assessment, Ground Water Studies, Geologic Resource Evaluation, Quarry Closure Reports.
Geo/Civil Engineering: Landslide Mitigation Design, Embankment Design, Foundation Rehabilitation,
Retaining Structures, Bridges, Shoreline Protection, Earth Dam Design, Design Plans and Specifications.
Construction Monitoring and Testing: QA/QC geotechnical inspection and testing including site
grading, foundations construction, subsurface drainage, pavement sections and concrete.
More information is available at www.millerpac.com
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Drilling Subconsultants
Miller Pacific will utilize various drilling subconsultants based on site specific conditions and access. A
combination of truck or track mounted, as well as, portable drilling equipment will be required for
subsurface exploration. We would likely utilize DeNovo Drilling for the track and portable equipment, and
Pearson drilling for truck mounted drilling. If required, specialized outside laboratory testing would likely
be performed by Cooper Testing Lab.
4.2 Key Personnel
The following provides an abbreviated summary of the key personnel for this project. The summary
identifies the qualifications of the individual and the role they will have on the project. Full resumes are
available upon request.
Scott Stephens, Principal, Civil and Geotechnical Engineer (MPEG) – Scott is a California registered
Civil and Geotechnical Engineer and will be the project manager for the geotechnical investigation. He
has more than 25 years of experience including over 600 Geotechnical and Geo-Civil projects in Marin
City that have addressed site grading, consolidation settlement and slope stability. Geotechnical services
have included inspection, exploration, monitoring, stability analyses, expert testimony, repair plans and
construction inspection, testing and project management. He serves as a Peer Reviewer for several
local governmental agencies. He has conducted forensic investigations and has provided expert
testimony on geotechnical issues including slope instability, retaining wall failure, foundation distress and
groundwater seepage. Scott has provided geologic and geotechnical services including investigation,
reports, repair plans and construction inspection for numerous slope stabilization projects.
Project Role: Will be the overall project manager and primary contact for the City. Will direct work of
the consultant team, supervise all geotechnical technical work and perform QA/QC final review to
ensure the accuracy of final work products and that the City’s needs are met.
Mike Jewett, Certified Engineering Geologist, Professional Geologist (MPEG) – Mike Jewett serves
as Project Geologist on a variety of Geotechnical and Geo-Civil Projects. His experience is concentrated
in the San Francisco Bay Area, primarily within Marin, Napa, Contra Costa, and San Francisco Counties.
Mike has conducted dozens of geologic site evaluations for a variety of projects, including distressed
properties, slope failures and pre-development feasibility studies. He has implemented and managed
subsurface exploration and laboratory testing programs for numerous geologic and geotechnical
investigations utilizing a wide array of specialized techniques and equipment, including auger, rotary-
wash, and continuous core drilling, cone penetrometer test (CPT) explorations, slope inclinometer and
monitoring well construction, installation of in-situ instrumentation, downhole geophysical logging, and in-
situ hydraulic conductivity testing. He has performed geologic field mapping and complex geologic
hazard evaluations for projects with acute seismic, liquefaction, settlement, coastal bluff erosion, slope-
stability and groundwater concerns.
Project Role: Will be the project geologist and responsible for the project subsurface exploration and
geologic hazards evaluation.
Ben Pappas, Senior Engineer, Civil and Geotechnical Engineer (MPEG) – Ben Pappas serves as a
Senior Engineer on a variety of Geotechnical and Geo-Civil Projects and is a registered Civil and
Geotechnical Engineer in the State of California. His experience is concentrated in the North and East
Bay area, particularly Marin, Sonoma and Alameda Counties. Ben has extensive experience working
with local City and School Districts and Colleges to improve their facilities. The projects Ben has been
involved with required geotechnical services to comply with the current CBC and Division of State
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San Rafael, CA
Architects (DSA) requirements. For his projects, he has provided detailed seismic hazard analysis,
liquefaction analysis, calculations for seismically induced settlement, slope stability (for both static and
seismic conditions) and settlement analyses.
Project Role: Ben will perform technical analyses to evaluate slope stability and develop
geotechnical design criteria for the project.
4.3 Reference Projects
The following provides an abbreviated summary of a few key projects with features similar to the proposed
project.
Marin County Public Works Landslide Investigation, Monitoring & Repair
Marin County, California
Over the past 20-years Miller Pacific has worked for the County of Marin as a sub-consultant on over 60
landslides which damaged County roads, parks and open space areas. Many of the projects involved
emergency consultation, geotechnical investigation and preparation of complete design repair plans. We
have prepared plans for soldier pile and lagging retaining walls, shotcrete and soil nail walls, tied back CIDH
retaining walls, Geobrugg catchment walls, reinforced earth buttresses, and other types of repairs. For
most of these projects we also performed construction observation and material testing services, working
with County Resident Engineers or Construction Managers. A few of the projects are described below.
The Crown Road at Idlewood Road was the large landslide that damaged
County roads due to FEMA disaster events. We investigated the site with
test borings and inclinometers that were used to determine the depth and
rate of landslide movement (up to 45 feet below road grade) and to model
geologic condition and perform slope stability analyses. The repair
consisted of a 200-foot-long row of 3-foot diameter drilled piers, spaced
7-feet on center, along the edge of the road and a 125-foot-long row of 3-
foot diameter drilled piers, spaced 7 feet on center, about 25 to 50 feet
uphill from the lower row of piers. Both structures are laterally supported
by up to 240 kip tiebacks consisting of double-corrosion protected bundled strands that are up to 110 feet
in length. Miller Pacific Engineering Group provide geotechnical consultation, inspection and testing during
construction.
We are monitoring landslides with slope inclinometers for Marin County where slow, gradual movement
has damaged roadways that have been maintained by asphalt concrete overlays. The landslides have all
been investigated with test borings converted to inclinometers that extend well into bedrock below the depth
of landslide movement. The monitoring is useful in determining the depth, magnitude and rate of slope
movement. The monitoring is typically performed twice a year and is combined with site reconnaissance
work to check for visual evidence of landslide activity. The County uses this information to determine which
landslides are likely candidates for permanent repair and to prioritize the work. The exploration and
monitoring data is also utilized for repair concepts, engineering analyses and development of repair plans
and specifications.
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MMWD Phoenix Lake Area Landslides
Mount Tamalpais Watershed, CA
Following heavy winter rains, Marin Municipal Water District engaged
Miller Pacific to evaluate 4 landslides that damaged fire roads located
within the District’s Mt Tamalpais watershed in the vicinity of Phoenix
Lake. Our scope of services included geologic reconnaissance,
geotechnical investigation with test borings, development of various
stabilization options and preparation of complete repair plans. The sites
were stabilized with drilled soldier pile and timber lagging retaining walls
with one of the sites utilized tiebacks for increased lateral support.
During construction, we observed excavation of landslide debris, soldier pile installation, tieback drilling,
installation and load testing.
Since 2009, we have monitored a large landslide located immediately downslope from the South Marin
Line Fire Road, adjacent to the Bon Tempe Water Treatment Plant. In the late 1960s, the roughly 250-
foot wide by 500-foot long landslide undermined part of a waste water recovery pond. In the late 1970s,
horizontal drains were installed within the landslide and the pond was underpinned with drilled piers to
improved slope stability. However, minor slope movement has continued. Miller Pacific performed a
geotechnical evaluation of the landslide which included; review of historic aerial photographs, site
reconnaissance of the landslide, and drilling a deep test boring located within the upper middle portion of
the landslide. The boring was converted to a slope inclinometer which we continue to monitor to confirm
the depth and rate of landslide movement.
Woodside Terrace Landslide
Fremont, California
A large landslide developed on open space directly below and in the back
yards of several homes. The subject of major litigation, Mr. Stephens
performed a geotechnical forensic investigation and provided expert
testimony. Primary causation factors were determined to be weak
geologic bedrock layers and groundwater seepage. Following litigation,
Mr. Stephens performed analyses to develop a landslide repair plan and
provided construction management, inspection and testing. The repair
included installation of drilled piers with tie-backs to support the landslide
scarp and homes during excavation. The landslide was excavated below
the failure plane and an extensive subsurface drainage system was installed to collect and convey
groundwater. The landslide area was rebuilt with a reinforced earth buttress to restore conditions.
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Zone 7 Cope Lake Detention Basin Slope Stabilization
Livermore, California
Wave erosion along the shoreline, groundwater seepage from an upslope
seasonal creek and non-engineered fill on the east slope of Cope Lake led to
significant toe erosion and landslides that created over-steepened, unstable
slopes and loss of the only vehicular access road around the lake. Miller Pacific
conducted a geotechnical investigation to determine the slope instability
causation factors and develop a geologic cross-section for use in stability
analyses of various slope stability and repair options with rough cost estimates.
The preferred stabilization option was a reinforced earth slope with subsurface
drainage and erosion resistant facing in the lower slope elevations. Existing
concrete and rock debris were utilized to stabilize soft keyway soils and create the rip-rap facing layer. Mr.
Stephens worked with Zone 7 on the preferred mitigation by providing stability analyses, development of
technical specifications, technical review of the contract document, and geotechnical consultation,
inspection and testing during construction.
Fair-Anselm Plaza Creek Bank Stabilization
San Anselmo, California
Fair-Anselm Plaza commercial development was originally constructed to
overhang Corte Madera Creek. During high velocity storm water flows, the creek
banks were eroding and sloughing which exposed the drilled pier foundation
system and was causing the creek bank to encroach on the shallow foundations
that support the structures. Miller Pacific conducted a subsurface exploration
program, designed a bank stabilization system, and provided construction
management and inspection services. Saturated and loose silt, sand and gravel
deposits within the creek bed and banks made traditional drilled excavations
unstable. We designed a reinforced shotcrete wall that was vertically and laterally
supported with helical anchors. The helical anchors were screwed into the ground, eliminating the need
for unsupported excavation and significantly reducing soil cuttings. The shotcrete wall was colored and
textured to match the natural soils in the surrounding creek banks. Existing on-site rock slope protection
was worked around and relocated to the base of the wall for scour protection.
Phoenix Lake Dam Geotechnical Sensitivity Analysis
Ross, California
As part of the Flood Zone 9 Watershed Flood Damage Reduction and Creek
Management Study, Miller Pacific has prepared a Preliminary Geotechnical
Evaluation Report and a Geotechnical Sensitivity Analysis Report. The
purpose of the preliminary studies was to evaluate geologic and
geotechnical conditions for potential use of the dam and reservoir as a flood
control detention basin. Our preliminary analyses were used to consider
possible required remedial measures and conceptual cost estimates for
inclusion in a grant application for funding. We reviewed background
geotechnical and geologic information including geologic maps, geotechnical reports, exploratory boring
logs, laboratory data, topographic mapping, and historic aerial photography. Miller Pacific performed site
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reconnaissance for preliminary evaluation of site geologic conditions. Slope-stability analyses were
performed using different assumed strength profiles for the dam. These analyses included static and
pseudo-static (seismic) evaluation using ground accelerations consistent with DSOD criteria and for sudden
drawdown conditions. Using the slope stability model, we evaluated different conceptual mitigation
measures to improve stability and reduce seismic deformations. Potential dam improvements included;
reconstruction of the down-stream buttress fill, adding internal drainage, foundation grouting and other
ground improvement measures.
5.0 REFERENCES
Miller Pacific Engineering Group has previously worked for the City of San Rafael on several different
projects. In addition to working with City of San Rafael personnel, other firm references are listed
below.
Mr. Ernest Klock, Principal Civil Engineer
Department of Public Works
3501 Civic Center Drive, Suite 304
San Rafael, CA 94903
Email: eklock@marinCity.org
Phone: 415-499-6552
Mr. Drew McIntyre, Chief Engineer
North Marin Water City
999 Rush Creek Place
Novato, CA 94948
Email: dmcintyre@nmwd.com
Phone: 415-897-4133
Mr. Julian Skinner
City of Larkspur Public Works Director
400 Magnolia
Larkspur, CA 94939
Email: pwdirector@cityoflarkspur.org
Phone: 415-927-5020
6.0 AGREEMENT AND INSURANCE COVERAGE
Miller Pacific Engineering Group has successfully negotiated agreements with the City of San Rafael for
previous geotechnical projects. We currently have an on-call agreement with the City that could be used
as the base agreement for this project. We have the insurance coverage required by the proposal.
7.0 COST PROPOSAL
The anticipated project budget is attached in the separate sealed envelope. If requested, we may be
able to alter the scope of services to meet schedule or budget requirements.
Firm
Personnel Classification
Sr. Geotechnical Engineer (Scott Stephens, GE)Project Engineer (Ben Pappas, GE)Project Geologist (Mike Jewett, CEG)Staff Geologist/EngineerOutside ChargesHourly Rate $240 $195 $160 $100
Project Management and Coordination
1.10 Project Meeting (3) 12 12 $2,880
1.20 Subconsultant Coordination 4 4 $400
Subtotal 4 $3,280
Review Documents, Site Inspections and Exploration Plan
2.10 Compile Existing Data 2 6 8 $1,080
2.20 Site Inspection and field measurements 1 6 7 $840
2.30 USA Markings 12 3 $440
2.40 Exploration Plan 16 7 $840
Subtotal 25 $3,200
Geotechical Exploration & Labortory Testing
3.10 Encroachment and MCEH Permits 1 8 $1,500 9 $2,540
3.20 Secure and Schedule Exploration Equipment 2 2 $200
3.30 Subsurface Exploration 2 32 $9,853 34 $13,533
3.40 Laboratory Testing 2 16 $2,080 18 $4,160
3.50 Prepare Figures/Logs/Graphics 1 16 17 $1,840
3.60 Prepare Exploration and Lab Appendix 1 2 3 $440
Subtotal 83 $22,713
GEOTECHNICAL ANALYSIS AND REPORT
4.10 Geologic Hazards Evaluation 5105 20
$3,300
4.20 Slope-Stability Analyses 5555 20
$3,475
4.30 Geotechnical Evaluation and Analyses 55 5 15
$2,675
4.40 Prepare Figures/Graphics 515 20
$2,700
4.50 DRAFT Geotechnical Reports (5 sites)51055 25
$4,450
4.60 Project Conference / Response to Comments 4 4 $960
4.70 FINAL Geotechnical Reports (5 sites)2555 17
$2,755
Subtotal 121 $20,315
Geotechnical Consultation and Plan Review
5.10 Response to Geotechnical Design Questions 10 5 5 5 25
$4,675
5.20 Plan Review and Letter 5 5 10 20
$3,175
Subtotal 45 $7,850
Geotechnical Construction Support
6.10 RFIs and Submittal Reviews 210 10 22
$3,430
6.20 Pre-Con Meeting and Site Inspections 830 38
$4,920
6.30 Construction inpection letters (5 sites)10 20 30
$4,400
Subtotal 90 $12,750
90 45 30 215 Outside
$21,600 $8,775 $4,800 $21,500 $13,433
All 5 Authorized Individual
Authorization
$21,032 $23,136
$14,022 $15,424
$10,516 $11,568
$14,022 $15,424
$10,516 $11,568
80 Upeer Toyon
121 Irwin Street
76 D Street
21 San Pablo
Cost Breakdown per Individual Site
298 $70,108
70 Irwin Street
TABLE 1: SAN RAFAEL 2017 STORM DAMAGE COST ESTIMATE
Labor Hours by Sub-Task
TOTAL CHARGESTOTAL HOURSWork ItemLABOR TOTALS (HOURS BY PERSONNEL)
LABOR TOTALS (CHARGES BY PERSONNEL)TaskMiller Pacific Engineering Group
PROJECT
TOTAL
STAFF REPORT APPROVAL
ROUTING SLIP
Staff Report Author: Kevin McGowan Date of Meeting: July 17, 2017
Department: Public Works
Topic: 2017 Storm Damage Repair
Subject: RESOLUTION OF THE CITY COUNCIL OF THE CITY OF SAN RAFAEL AUTHORIZING THE CITY MANAGER TO
EXECUTE A PROFESSIONAL SERVICES AGREEMENT WITH MILLER PACIFC ENGINEERING GROUP FOR
GEOTECHNICAL INVESTIGATION, SITE ANALYSES AND REPORTS ASSOCIATED WITH THE 2017 STORM DAMAGE
SITES IN A TOTAL NOT-TO-EXCEED AMOUNT OF $70,108.
Type: (check all that apply) ☒ Consent Calendar ☐ Public Hearing
☐ Discussion Item ☐ Resolution ☐ Ordinance
☐ Professional Services Agreement ☐ Informational Report
*If PSA, City Attorney approval is required prior to start of staff report approval process
☐ Was this agenda item publicly noticed?
Due Date Responsibility Description Completed
Date Initial / Comment
PRELIMINARY REVIEW
FRI, 6/30 Author Submit draft report to
Director
6/30/2017 ☒
Prepared by KM
MON, 7/3 Director
Assistant City Manager
Submit draft report to ACM
Readiness review
6/30/2017
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BG
☒
WED, 7/5 City Attorney
Finance
Preliminary legal and
financial impact review
7/5/2017
7/5/2017
☒
LAG
☒
Vanb
CONTENT REVIEW
FRI, 7/7 Assistant City Manager
Author
Content review
Revisions
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FINAL REVIEW
MON, 7/10 City Attorney
Finance
Author
Final legal review
Final financial review
Revisions / accept changes
7/12/2017
7/10/2017
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LAG
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Van
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KM
TUES, 7/11 City Manager Final review and approval Click here to
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