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Work Proposal to Provide
Geologic Report Review Services
City of la Quinta, Design and Development Department
City of La Quinta
Proposal to Provide Geologic Report Review Services
TABLE OF CONTENTS
TABLEOF CONTENTS............................................................................................................................ 1
1. COVER LETTER............................................................................................................................... 2
2. STATEMENT OF QUALIFICATIONS.................................................................................................. 4
PROPOSEDPROJECT PERSONNEL................................................................................................................................. 4
EXPERIENCE WITH SIMILAR WORK............................................................................................................................. 12
CLIENTREFERENCES................................................................................................................................................... 23
SUBCONTRACTEDSERVICES....................................................................................................................................... 23
3. UNDERSTANDING AND APPROACH...............................................................................................24
1
Leighton and Associates, Inc.
A LEIGHTON GROUP COMPANY
August 1, 2017
Proposal No. PD17-033
City of La Quinta
Design and Development Department
78-495 Calle Tampico
La Quinta, CA 92253
Attention: Mr. Bryan McKinney
Interim City Engineer
Subject: TECHNICAL QUALIFICATIONS PROPOSAL and COST PROPOSAL
GEOLOGIC REPORT REVIEW SERVICES
In response to your Request for Proposals (RFP), Leighton and Associates, Inc. is pleased to
present both a Technical Qualifications Proposal and a Cost Proposal for geologic report review
services to the City of La Quinta.
Our most successful client niche is public agency support, for which we have unique local
geotechnical and California regulatory experience. The following is a summary of our
qualifications:
Public Works Client Experience: With 56 years of experience providing geologic and
geotechnical engineering services focused entirely on southern California public agencies,
Leighton is staffed with a deep bench of California licensed Engineering Geologists (CEGs),
Geotechnical Engineers (GEs), and licensed/certified field staff, who provide appropriately
scoped and cost effective geotechnical services. We have worked for numerous California
cities, counties and special agencies, as well as State agencies, who return to us for services
on numerous projects as satisfied and sustaining clients. Our client references will tell you
that our services are provided on -time and on budget to meet your project goals. We value
key -sustaining -clients and work to keep them by continuously providing cost-effective,
timely and quality deliverables.
Development and Regulatory Experience: We routinely provide all services listed in your
RFP, with City planning and public works departments as our main client niches. We know
the current Alquist Priolo Earthquake Hazard requirements, California Building Code (CBC
2016) and other regulatory agency requirements specific to land development and public
works projects, since we work in this realm daily. All of this and more enables us to provide
cost-effective and timely project review that achieve City objectives.
41945 Boardwalk, Suite V Palm Desert, CA 92211
760.776.4192 760.776.4080 Fax www.leightongroup.com
La Quinta, Geolo4zic Report Review Services
PD17-033
Local Presence: Our services will be mobilized from our Palm Desert office. Our staff is well
familiar with geologic conditions in La Quinta. Because of our proximity to the City and
professional staffing levels, we are well positioned to assist with projects both large and
small, short term or long term, throughout the year. Our project teams are structured to
provide our clients streamlined services in a timely manner, specific to the task at hand,
quickly mobilized. We are accustomed to responding to short -notice and urgent requests.
This is what differentiates Leighton and will benefit the City.
Leighton's Experienced Project Manager: Leading our Leighton Consulting, Inc. team is
Robert Riha, P.G., C.E.G., a California Professional Geologist (PG) and Certified Engineering
Geologist (CEG), who is currently managing, and has managed, municipal on -call projects in
southern California. Mr. Riha is experienced dealing with project challenges; providing
timely and complete report/plan reviews, communications and practical technical
commentary.
We understand that the execution of any contract pursuant to this RFP is dependent upon the
recommendation of the Selection Panel and may be subject to the approval of the City of La
Quinta City Council. We have reviewed the terms and conditions in the Agreement and provide
notice of deductibles to General Liability and Professional Liability Insurance. Additionally,
Leighton will reimburse a pro -rate share of cost to defend, if Leighton is found liable to provide
such defense.
We appreciate the opportunity to present this proposal, and look forward to working with your
staff and project teams. If you have any questions, we can be reached at (866) LEIGHTON or
(805) 654-9257, directly at the phone extensions or e-mail addresses listed below.
Respectfully submitted,
LEIGHTON and ASSOCIATES, INC.
(::;�_ �Zx_�_ �-
Robert Riha, P.G., C.E.G.
Vice President / Sr. Principal Geologist
Ext. 8914 rrihaAleiehtoneroup.com
Page 2 of 2
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City of La Quinta 'I
Proposal to Provide Geologic Report Review Services ,
2. STATEMENT OF QUALIFICATIONS
"aalt mv. Wa+Fal
PROPOSED PROJECT PERSONNEL
PROJECT PRINCIPAL % PROJECT MANAGER
Robert 'Bob" Riho, PG, CEG, will have direct responsibility
for Leighton's services throughout the contract. He will be
the City's contact for all matters dealing with the project
and will handle the day-to-day activities through to
completion. Bob is our Senior Principal Geologist and
Managing director of our Palm Desert and Temecula offices
since 1997.
Bob's local experience includes numerous projects
Robert Riha, PG, CEG
Sr. Principal Geologist
41945 Boardwalk, Suite V!
Palm Desert, CA 92211###"
951.252.8914 direct
951.830.9290 mobile
Leighton
rriha@leightongroup.com
completed for the City, private land owners, and numerous other projects throughout the Coachella Valley
area.
Bob's professional experience covers a large range of private large land developments and public works
projects, including, community/civic centers, road improvements, transportation structures, and water
infrastructure. Many of Bob's projects are preliminary studies, reviewing other consultant reports for due
diligence purposes, and geologic/geotechnical design. He also understands the coordination with peer
consultants, private land developers, owners and agencies having provided geologic studies for residential,
commercial, and industrial properties. His collective experience was beneficial when he provided senior
review of the geologic/geotechnical study for planned 220-acre Desert Lakes project in City of Coachella
which contains a portion of the San Andreas Alquist Priolo Earthquake Fault Zone. Another project
contains the Riverside County zoned Garnet Hill Fault Zone located in Palm Springs near 1-10. A detailed
fault investigation was performed to determine locations of active and non -active faults.
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City of La Quinta
Proposal to Provide Geologic Report Review Services
Mr. Riha is also very experienced during the review of peer consultant reports, confirming both the
geologic and geotechnical findings and recommendations that are pertinent to the subject project. For
example, the recently submitted application for a parking structure addition (Ridge Park Drive PA16-1550),
Mr. Riha suggested the applicant should provide further details in their determination of potentially onsite
faulting did not exist and will not impact the structure to recommendations of providing a slope stability
analysis for a large descending slope that shows some indications of potential distress. Bob's technical
expertise, an eye for detail and commitment for responsiveness provided a less than 10-day delivery on this
peer review. Mr. Riha reviewed the applicants responds and report approval (with commentary) was
provided within one week.
City of La Quinta►�
Proposal to Provide Geologic Report Review Services
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TEAM RESUMES
ROBERT RIHA, PG, CEG I Senior Principal Geologist
Senior Principal Geologist - Project Manager - Primary Point of Contact: Mr. Riha will manage all contractual and
technical aspects for each project during the on -call contract including preparing all cost estimates, geologic peer
review reports, performing geologic review/ analyses, and reviewing invoices and/or progress reports for the City
project manager. Mr. Riha will be will be the City's single point of contact during this contract. His responsibilities will
also include scheduling, budget oversight, safety procedures and communication with the project team. As needed
per task order, Mr. Riha will support the geologic/geotechnical services with management of staff level personnel
during data review and site reconnaissance. Mr. Riha will provide submittal requirements to applicants, if needed,
geologic input to peer review reports and seismic ground motion studies, and review field of geological field mapping,
if needed. Mr. Riha will also provide onsite geologic review of exploratory fault trenches or other site conditions such
as rock fall hazard, if needed.
Professional Summary: Mr. Riha has more than 30 years of professional experience performing and managing
geologic/geotechnical assessments for planning and construction of private and public work projects, including
residential subdivisions, commercial centers, public buildings and roadways, pipelines and water facilities. He is
practiced in geologic/geotechnical site investigations, buttress and structural landslide mitigation, seismic hazard
evaluations including active fault evaluation and mitigation, liquefaction and dynamic settlement, evaluation of rock
rippability, rock fall hazard, grading control, ground improvement, pipelines, pavement, and forensic evaluations.
Education: Professional Registrations:
B.S., Geological Sciences, San Diego State University, California Certified Engineering Geologist -1921
San Diego, California, 1985 California Professional Geologist - 5866
PEER REVIEW, CITY OF TEMECULA, Temecula, CA. Project manager and principal geologist for geologic and
geotechnical peer review of geotechnical investigation for planned multi -level parking structure located in the Ridge
Park Business Park. The study included review of provided technical reports, State of California resources, County
provided documents, consultation with County Geologist and review of Leighton's in-house geologic and fault related
reports prepared for nearby projects. The peer review was completed within 10 days of receipt of authorization to
proceed.
PEER REVIEW LAKE ELSINORE MIDDLE SCHOOL, Lake Elsinore, CA. Principal Geologist during peer review of geologic
studies related to potential elementary school site located within a County mapped fault hazard zone. Peer review
including the independent review of provided consultant reports, County data and State AP maps and reports as well
as in-house Leighton reports. Due to missing site specific fault evaluation data, a limited study was recommended
using seismic reflection, cone penetrometer and continuous core borings to evaluate the deep subsurface sediments.
Mr. Riha presented his findings to District representatives and California State Geologists in Sacramento (California
Geologist Survey). Based on his findings, it was concurred with California Geologic Survey that there was insufficient
data to conclude that active faulting was not underlying this site. Recommendations for additional site evaluation
were provided.
RANCHO MIRAGE HIGH SCHOOL, Rancho Mirage, CA. Principal Reviewing Geologist for geologic hazards review,
including site -specific seismic evaluations, and historical seismicity and faulting. Mr. Riha continued as Principal
Geologist during construction.
GARNET HILL, Palms Springs, CA. Project Reviewer and Principal Geologist for geotechnical and fault investigation for
proposed 2.0 MG steel reservoir and mixed use project site. The proposed above ground reservoirs had been planned
on ridgetop susceptible to large ground motions due to proximity of San Andreas Fault and onsite County Zoned
Garnet Hill Fault. The purpose of Leighton's fault investigation was to determine activity and identify the location of
Garnet Hill fault within the project area. Though detailed subsurface investigation and filed mapping, an active strand
was determined to exist onsite and appropriate structural setbacks from the fault were prepared.
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City of La Quinta '
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Proposal to Provide Geologic Report Review Services ; z
DESERT LAKES, Coachella, CA. Principal Reviewer for geotechnical and fault investigation for proposed 220 acre
residential and mixed use property located north of 1-10 and east of Dillon Road. This property contains a segment of
the San Andreas Fault Hazard Zone along with multiple suspected landslides. This investigation included the
excavation and logging of 3 fault trenches totally 1,822 lineal feet, 56 test pits, a geophysical study, site mapping and
analysis for liquefaction, rock fall hazard, rippability, and seismic ground rupture.
SILVERROCK GOLF RESORT, La Quinta, CA. Principal Geologist during geologic and geotechnical investigation for
proposed clubhouse and evaluation of pavement distress on Ahmanson Lane. Recommendations for remedial
earthwork were provided for clubhouse due to deep collapsible soils. Recommendations for remedial repair of
pavements in Ahmanson Lane were provided and included use of geotextiles to support new pavements in selected
areas.
JEFFERSON AVENUE BUSINESS CENTER, Murrieta, CA. Project Manager/Project Geologist for geohazard level
planning review prepared for the City of Murrieta. This included detailed review of historical aerial photos and
numerous consultant reports and Leighton's in-house library. Final report included summary of consultant findings,
maps of all collected data relative to local faulting and other geologic hazards including liquefaction and subsidence.
WORLD LOGISTICS CENTER SPECIFIC PLAN, Moreno Valley, CA. Principal Geologist during all geologic review and
geotechnical evaluations in support of Draft and Final Environmental Import Report for planned 3,814 acre logistics
warehousing, open space and public facilities development. Investigations were performed to determine limits of
onsite Alquist Priolo zoned San Jacinto Fault Zone. Detailed studies were completed to evaluate the property for
compressible and expansive soils, landsliding, subsidence, slope stability and evaluations of site seismic hazards
including seismic ground failure, ground rupture, dynamic settlement and rock fall hazards. Mr. Riha reviewed Draft
EIR documents and community comments for accuracy with the technical reports supporting the Geology and Soils
section. Onsite fault investigations included over 7,000 feet of exploratory trenches reaching depths of up to 30 feet.
This study allowed development planning in areas previously restricted in City EIR documents and were approved
without further conditions by the City technical reviewer.
WILDOMAR SQUARE, Wildomar, CA. Project Manager/Principal Geologist for onsite fault evaluation and
geotechnical studies for the Wildomar Square site located at the intersection of Clinton Keith Road and 1-215 in the
City of Wildomar. Studies included evaluation of lineaments possibly related to the Glen Ivey fault traversing a
portion of the property. Studies concluded no active faulting onsite and approved by county Geologist without
further comment or conditions.
MURRIETA MESA HIGH SCHOOL, Murrieta, CA. Principal Geologist for geologic review and investigation for the 65-
acre Murrieta Mesa High School. Reports were prepared to fulfill the Geotechnical and Engineering Geology
requirements of the California Building Code (CBC) Title 24 for development of the proposed schools. The report
summarized the geologic and geotechnical findings, conclusions and geotechnical design and construction
recommendations for the proposed school developments. A subsurface exploration consisted of the excavation,
logging and sampling of exploratory fault trenches. Trenching concluded that active faulting was determined to exist
at the High School site. Land use restrictions were prepared and the campus building layout adjusted to accommodate
these findings. All geologic reports accepted by CGS and DSA.
REGIONAL WATER RECLAMATION FACILITY EXPANSION AND UPGRADE, Temecula, CA. Principal Geologist and Senior
Reviewer. Performed a detailed review of previous consultant reports and geotechnical investigation for the
expansion and upgrade phase of this project. This project consisted of two new 80 foot diameter digesters, one
clarifier, a maintenance building, two out -of -compliance and one tertiary effluent storage ponds, and associated
pipelines. Work included delineation of onsite active faulting to prevent location of critical facilities atop active faults.
BUSINESS PARK DRIVE, Temecula, CA. Principal Geologist during peer review of consultant reports and onsite
detailed fault investigation for several commercial developments located within the Elsinore Fault Zone. Deep fault
trench excavations exposed stands of the active Elsinore Fault. Structural setbacks were established and the office
park was designed to accommodate a non-structural area as parking lots. All reports reviewed and accepted by
County Geologist.
City of La Quinta ^^»I
Proposal to Provide Geologic Report Review Services;'
PHILIP BUCHIARELLI, PG, CEG I Senior Principal Geologist
Principal Geologist: Mr. Phil Buchiarelli has 30 years of experience in all stages of commercial, industrial and
residential developments. He has completed fault investigation studies on the Raymond fault in San Marino, the
Elsinore Fault Zone south of Corona, the Whittier fault in Yorba Linda, Brea, and La Habra Heights, the Whittier
Extension fault in Rosemead, and other faults in the Southern California area. His projects have included site specific
investigations for the construction of numerous public works projects including water reservoirs and road alignments,
commercial centers and large hillside developments. Mr. Buchiarelli has also worked on environmental impact
assessments and investigations for remediation of geotechnically distressed sites. Mr. Buchiarelli has completed
geologic investigations that include field and laboratory testing programs, analyses and development of
recommendations for design and construction. Complex geotechnical issues include slope stability, settlement,
subdrainage design, foundation design, retaining wall recommendations and pavement design. Sites have included
active faults, with review of seismic hazards and development of deterministic and probabilistic ground motion
parameters, as well as design response spectra, critical to successful design.
Education:
B.S., Geology, University of California at Los Angeles,
1981
U.S. Naval Diving, Salvage and Training Center
(Qualified SCUBA and Surface -Supplied Diving,
Underwater Inspection, Testing, Salvage, and Repair),
1982
Studies toward M.S., Geology, University of California at
Los Angeles
Professional Registrations:
California Certified Engineering Geologist -1715
California Professional Geologist - 5502
ON -CALL GEOTECHNICAL SERVICES, Diamond Bar, CA. Project Engineering Geologist providing geotechnical services
for the City of Diamond Bar since 1992. In addition to providing third party review of geotechnical reports for the City
of Diamond Bar, Mr. Buchiarelli has also providing geotechnical services during design and construction of the city's
community center in Summitridge Park.
SAN GORGONIO PASS WATER AGENCY NEW RECHARGE BASIN, Beaumont, CA. Project Geologist during design of a
new recharge facility for the San Gorgonio Pass Water Agency in the City of Beaumont. Leighton's work on the project
included testing of the soil to evaluate the general infiltration characteristics of the soil as well as review of nearby
active faults (Banning and associated faults) and the seismic conditions and the site, static and seismic stability
analysis of the basin slopes and other geotechnical factors that have an impact of the development. A significant
concern for the project was possible movement of water though the granular soils at design cut slopes and though the
bedding materials along proposed drain lines resulting in slope instability. Leighton provided recommendations for
grading of the facility and construction of site improvements including, retaining walls, spillways, pavement and other
and other associated structures.
TRACT 28693-1, Cathedral City, CA. Project Geologist for the geotechnical investigation of a multi -family residential
development. Specific geotechnical issues included evaluation of previous site grading, potentially compressible soils
and evaluation of potential for strong seismic shaking from nearby San Andreas Fault and other faults in the region.
SKYBOURNE, Desert Hot Springs, CA. Project Geologist for master -planned community with seven neighborhoods,
and civic infrastructure. The project includes development of approximately 2200 residential lots, a school site and a
partially buried water storage tank. Significant geotechnical issues included potentially compressible soil, the presence
of large rock in the alluvial soil and strong seismic shaking.
VISTA LAGUNA RESIDENTIAL DEVELOPMENT, Indio, CA. Project Geologist for geotechnical investigation for the 97-
acre site. The subsurface activities included hollow -stem borings and laboratory analysis. The report provided
information relative to the faulting and seismicity, groundwater, subsurface soil conditions and regional geologic
setting.
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City of La Quinta ;
Proposal to Provide Geologic Report Review Services
THE ENCLAVE, Palm Desert, CA. Project Geologist during rough grading. Provided updated recommendations for
remedial grading including recommended removals, and based on R-Value testing, pavement section
recommendations for'all interior streets and parking lots. During rough grading, Leighton provided backfill observation
and in -situ testing. Services included field density tests using sand cone and nuclear density gauges for 6,500 linear
feet of water and sewer pipeline.
RANCHO MIRAGE HIGH SCHOOL, Rancho Mirage, CA. Project Geologist for a geologic hazards review, including site -
specific seismic evaluations, and historical seismicity and faulting.
TRACT 15898, Chino Hills, CA. Project Geologist during preparation of the Environmental Impact report for Tract
15898 a 200 acre residential development in the City of Chino Hills. Work included review and design stabilization of
five major landslides that covered the entire site. Design included avoidance of oak tree and jurisdiction areas.
TRACT 17498, Calimesa Area of Unincorporated Riverside County, CA. Project Geologist for geotechnical and
environmental studies of residential- mixed use development. Project included detailed analysis of deep soil
conditions, investigation and evaluation of a potential active fault that crossed the site, which was a chicken farm.
Required extensive interaction and meeting with county reviewing agency during preparation of final reports.
THE RESORT AT EASTVALE AND COMMUNITY PARK, Mira Loma, CA. Project Geologist during the preliminary
geotechnical investigation for the design of this mixed -use development. It will include a 120-acre community park,
trail areas, a swimming pool, baseball fields and tennis courts, as well as'homes, a new school and a commercial
development within this master -planned community. The project site is located near several active faults, particularly
the Chino -Central Avenue fault — a major fault zone marking the Chino and Puente Hills.
CLAREMONT HILLS, Claremont, CA. Project Manager for geotechnical services during design and construction of a
large residential development in the City of Claremont. Project included a detailed geotechnical investigation and
slope stability analysis for design and construction of the Chicken Creek drainage improvements under review of the
County of Los Angeles. Significant geotechnical issues included a review of slope stability, debris generation, and
sediment transport in the drainage area for proper sizing of the debris basins. Detailed analysis of interior basin slopes
for rapid drawdown conditions and impact of saturation on adjacent native soils was also required.
LOMA ALTA PARK GYMNASIUM, Alondra, CA. Project geologist for geotechnical exploration and fault investigation
for the planned improvements and geotechnical recommendations for siting, design and construction of the gym. The
park is located near the potentially active Sierra Madre Fault Zone, and recent studies in the northern portion of the
park located the fault in the near subsurface and determined that the fault observed there was active (had moved in
the last 11,000 years). A review of historic aerial photographs revealed that additional fault splays might be present in
the central portion of the park where the new gymnasium was planned. Project manager during geotechnical
observation and testing and materials testing an inspection during gym construction.
EASTSIDE AND WESTSIDE RESERVOIRS, Brea, CA. Project Geologist for two 15-million-gallon above -ground steel
reservoirs, located within the hillside oil fields on the southern flank of the Puente Hills. Complex geotechnical issues
addressed include slope stability, settlement, subdrainage design, foundation design, retaining wall recommendations
and pavement design. Both sites are in the vicinity of the active Whittier fault, so review of seismic hazards and
development of deterministic and probabilistic ground motion parameters, as well as design response spectra, were
critical to the successful design.
ETIWANDA ESTATES RESERVOIRS, Rancho Cucamonga, CA. Project Reviewer for geotechnical and fault investigation
for proposed reservoir. The proposed two above ground reservoirs had been planned immediately south of the
mapped trace of Strand C of the Cucamonga fault, with the northern of the two reservoirs currently proposed to be
constructed within 15 feet of the base of the scarp formed by the fault. The purpose of Leighton's fault investigation
was to identify the location of Strand C of the Cucamonga fault, to determine if the fault is active within the project
area, and if so, to determine an appropriate structural setback distance from the fault.
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City of La Quinta
Proposal to Provide Geologic Report Review Services 1
Staff Geologists: Working under direction of Bob Riha, our staff geologist will provide technical support to Mr. Riha
by providing research on Web based State and County resource sites, locate in-house geologic references and
provide technical support as needed.
JEFF DELAND I Staff Geologist
Professional Summary: Mr. Deland has over 16 years of experience in engineering geology design and environmental
geology as well as experience in observation, testing, documentation and reporting on work performed by
contractors. He has worked on numerous geotechnical and environmental investigation and remediation, grading and
post grading projects in Riverside County. Mr. Deland has geologic experience on a wide range of projects, including
preliminary geotechnical investigations, subsurface fault investigations, rock rippability studies, rock slope stability
analysis, environmental site assessments, groundwater contamination investigations and environmental remediation.
In addition, Mr. Deland has experience in work plan preparation, supervision of field activities and personnel, and
report writing. He has worked on residential developments, roadway projects, institutional and commercial facilities.
Mr. Deland was the field geologist during recent grading of the City's Roripaugh Ranch, Butterfield Stage Road — Phase
II project.
Education: Professional Registrations:
B.S., Geology, California State Polytechnic University Nuclear Density Gauge Certification
Pomona, 2003 40-hour HAZWOPER
RORIPAUGH RANCH — BUTTERFIELD STAGE ROAD PHASE II, Temecula, CA. Staff Geologist responsible to map and
document all remedial earthwork during rough grading. Mr. Deland assisted in earthwork quantity determination for
City contract control.
WINE COUNTRY SEWER GEOTECHNICAL EXPLORATION, Temecula, CA. Staff Geologist for subsurface geotechnical
exploration for a proposed 2 mile sewer pipeline extension and lift stations within the Wine Country of Temecula.
Performed drilling/sampling of borings within street right-of-ways while conducting traffic control. Oversaw
installation of monitoring wells and conducted water sampling for quality analysis.
REGIONAL WATER RECLAMATION FACILITY EXPANSION AND UPGRADE, Temecula, CA. Staff Geologist. Scheduled
subcontractors, obtained encroachment and well permits. During the field investigation he coordinated
drilling/excavation and sampling of soil, documenting all subsurface explorations and custody of all samples for
detailed geotechnical investigation for the expansion and upgrade phase of this project.
MURRIETA MESA HIGH SCHOOL, Murrieta, CA. Staff Geologist, providing geotechnical field services during
preliminary geotechnical investigation. The subsurface investigation included fault trenching under CGS oversight and
28 borings and 40 test pits, highly compressible soils were found to exist below the planned two story classroom
structures which would settle under the planned fill and building loads.
REGIONAL WATER RECLAMATION FACILITY WASTE ACTIVATED SLUDGE THICKENING EXPANSION, Temecula, CA.
Staff Geologist for field observation and soil testing during the Waste Activated Sludge (WAS) expansions for the
Temecula Regional Water Reclamation Facility.
SKECHERS DISTRIBUTION CENTER, Moreno Valley, CA. Staff Geologist during grading of a large commercial project.
Provided in -grading recommendations for appropriate remedial measures during the fast -track schedule. Performed
in -grading exploration for a possible unmapped portion of the Casa Loma Fault. Included storm drain under Riverside
County Flood Control oversight.
HARVESTON, Temecula, CA. Staff Geologist for the 550-acre residential and commercial planned development.
Studies were performed to support the use of onsite soils to create the man-made lake liner, which prevented the
need to import, impermeable clay materials. Recommendations were crafted to suit the needs of four homebuilders
and one apartment boulder and various commercial builders.
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City of La Quinta—►
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Proposal to Provide Geologic Report Review Services
Avi Schwartz, PG, Staff Geologist
Professional Summary: Mr. Schwartz has over 15 years of southern California engineering geology experience,
working on public and private sector projects, infrastructure and large acreage master -planned developments. He has
performed research and subsurface exploration for landslide assessment, slope stability, liquefaction potential,
roadway improvements, earthquake fault evaluation and evaluation of rock rippability. Mr. Schwartz has experience
in aerial photographic analyses, detailed field mapping, active surface fault studies, subsurface exploration, analysis of
geotechnical data, and coordination of field personnel and equipment. He has provided geologic observation,
mapping and documentation for many successfully completed construction projects throughout southern California.
Mr. Schwartz has experience in work plan preparation, supervision of field activities and personnel, and report
writing. He has worked on residential developments, roadway projects, institutional and commercial facilities. Mr.
Schwartz was also a field geologist during recent grading of the City's Roripaugh Ranch, Butterfield Stage Road — Phase
II project.
Education:
B.S., Geology, San Diego State University Pomona, 2000
Professional Registrations:
California Geologist — 7856
Nuclear Density Gauge Certification
40-hour HAZWOPER
Certified Erosion, Sediment and Storm Water
Inspector No. 0249
BNSF Contractor Safety Course
RORIPAUGH RANCH — BUTTERFIELD STAGE ROAD PHASE Il, Temecula, CA. Staff Geologist responsible to map and
document pertinent remedial earthwork during rough grading to relieve other staff geologist.
Quail Ranch Golf Course, Moreno Valley, CA: Staff Geologist for the investigation of a geologically -complex site for a
proposed residential development. Assessed geotechnical issues including the onsite Casa Loma Fault, subsidence
and fissuring due to groundwater withdrawal, possible large-scale landsliding, numerous surficial landslides and deep
undocumented fills. Recommended design alternatives to enhance site utilization while reducing required remedial
grading.
MURRIETA MESA HIGH SCHOOL, Murrieta, CA. Staff Geologist, during research and onsite fault investigation and
responsible for providing geotechnical field services during preliminary geotechnical design and fault investigations for
a proposed high school site. Work included downhole logging and four fault trenches. Services were extended to
include soils and materials testing, and inspection during the construction of the school.
REGIONAL WATER RECLAMATION FACILITY WASTE ACTIVATED SLUDGE THICKENING EXPANSION, Temecula, CA.
Staff Geologist for field observation and soil testing during the Waste Activated Sludge (WAS) expansions for the
Temecula Regional Water Reclamation Facility.
SKECHERS DISTRIBUTION CENTER, Moreno Valley, CA. Staff Geologist during grading of a large commercial project.
Provided in -grading recommendations for appropriate remedial measures during the fast -track schedule. Performed
in -grading exploration for a possible unmapped portion of the Casa Loma Fault. Included storm drain under Riverside
County Flood Control oversight.
MORGAN VALLEY, Temecula, CA. As Staff Geologist, provided geological field services which included observation of
removal bottoms in alluvial and Pauba Formation soil types for large fill areas during rough grading of a multi -million
yard hillside grading project of two housing tracts for Pulte and Pinnacle Homes, near the Temecula Creek.
RANCHO HIGHLANDS, Temecula, CA. Staff Geologist during the geotechnical evaluation of a previously -graded multi-
family residential site. Evaluated the impact of the onsite Wildomar Fault on the existing fills and proposed structures
and obtained regulatory approval.
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City of La Quinta
Proposal to Provide Geologic Report Review Services
EXPERIENCE WITH SIMILAR WORK
Leighton and Associates, Inc. (Leighton) is a multi -disciplined engineering firm, providing geotechnical, environmental,
and testing and inspection services. We provide a professional staff of Professional Geologists, Certified Engineering
Geologists, Registered Civil and Geotechnical Engineers, Registered Hydrogeologists, and Certified Inspectors. From
the early planning stage through site development, Leighton has experience to help your project. We approach each
project as a team, structured to provide the correct mix of engineers, scientists, technicians, and specialists to fit the
project's size and complexity. Field and analysis work is performed by professionals based in a local office. However,
when you have special geotechnical or environmental site conditions, we assign the best experts from any of our eight
California offices to address your specific issue.
Leighton has worked with over 25 municipal agencies throughout the Coachella Valley area. Examples include the
cities of La Quinta, Cathedral City, Palm Desert, Palm Springs, Desert Hot Springs, Indio, as well as various Coachella
Valley School Districts. For these public agencies, we have provided a full spectrum of geotechnical engineering,
environmental and material testing and inspection services.
In addition, Leighton has worked on many residential projects for private developers including:
DR Horton
Spanish Walk - Palm Desert
Santerra - La Quinta
Skyborne - Desert Hot Springs
Shadowview — Coachella
Sonora Wells - Indio
Lennar
Griffin Ranch — La Quinta
Whittier Ranch - Indio
Pulte
Desert Dunes - Desert Hot Springs
Vintage Club — Indian Wells
Saris Regis
Enclave — Palm Desert
O'Donnell Atkins
Lake Village — Indio
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City of La Quinta
Proposal to Provide Geologic Report Review Services, -
SkOorne Residential Villages, DR Horton I Desert Hot Spring5,j
Located in the expanding Coachella Valley, with its affordable housing and year-round resort weather,
Skyborne's six unique residential villages, totaling 2,120 lots, meet the needs of a broad range of home
buyers. The structures range from one and two story wood -frame dwellings constructed on mat, or
post -tensioned foundations. The project also includes the construction of interior streets, and typical
onsite improvements including sewer, storm drain, and wet and dry utilities.
Leighton completed a due diligence geotechnical investigation of the site to explore the subsurface
conditions with respect to the planned development. The investigation also included an evaluation of
general soil characteristics for the purpose of providing preliminary geotechnical recommendations
for use design and construction of the proposed site. Although the topography was relatively flat,
geotechnical recommendations included seismic analysis and fill material requirements.
A component of this development was two 2-million-gallon water storage reservoirs. The reinforced
concrete reservoirs provide water to the 2,120 lots planned for the community. The site exploration
was performed utilizing backhoe test pits to characterize the subsurface soils. Our report included
remedial grading recommendations to reduce differential settlement and provided engineering
recommendations for the design and construction of the water storage reservoirs. Leighton provided
observations and testing during the grading for the reservoirs. Leighton also observed the installation of
approximately 45,000 lineal feet of water and sewer pipe line throughout the community.
Also a factor in the development was the relative dry, loose nature of the existing alluvial soil on site.
Recommendations were provided for heavily watering/flooding of removal bottoms to help consolidate
the native soil and to help reduce the potential for future water -induced collapse.
During rough and post grade operations, Leighton provided testing and observation, including water
and sewer pipe line and over 12,000 If of roadway construction.
Leighton is the Geotechnical Engineer of Record for this project, including a fire and police station
Leighton conducted a geotechnical investigation including recommendations for pavement design.
During construction, Leighton provided soils and materials testing.
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City of La Quinta
Proposal to Provide Geologic Report Review Services
11"Morpra NMI
Sonora Wells is a planned residential development which will consist of one and two story single family
residential buildings. The proposed development will also include roads, a village club.
Leighton conducted a geotechnical investigation to evaluate the geotechnical conditions at the site
with respect to the planned development. Our scope of work included a background review of readily
available relevant in-house geotechnical literature, pre -field investigation activities, a field investigation,
laboratory tests and a professional engineering analysis of findings during the investigation.
Groundwater was encountered during our subsurface exploration, however there were no traces of
active or potentially active faults crossing the project site despite it being situated in the Coachella
Valley. We concluded that construction of the proposed site was feasible from a geotechnical
standpoint despite the geotechnical constraints of the area, which include presence of near -surface,
loose, moderately compressible alluvial soils, and seismic shaking. The geotechnical constraints found
are common in the area, therefore good planning and design of the project can limit the impact of the
mentioned constraints.
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City of La Quinta
Proposal to Provide Geologic Report Review Services
Griffin Ranch, Len
The Griffin Ranch community is located on 240 acres in La Quinta and offers picturesque views of the
Santa Rosa Mountains, spacious and luxurious living spaces and an abundance of beautiful scenery
and wildlife. It features Spanish, Tuscan, Mission and Andalusian influenced exteriors, with private
courtyards and verandas.
Leighton provided field observation and testing services during the re -conditioning of the subject
residential lots. The re -conditioning process generally consisted of scarification, moisture conditioning
and re -compaction of 8 to 12 inches of exposed surface. Based on the results of our testing, the
subgrade soils have the required relative compaction of 90 percent per ASTM D1557. From a
geotechnical viewpoint, it is our opinion that the subject home sites are suitable for the intended use.
Based on our laboratory testing, sulfate content is considered moderate to severe and Type II/Type V
concrete is recommended for these subject lots. The foundation design parameters provided in the
reports remain valid.
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City of La Quinta
Proposal to Provide Geologic Report Review Services
Whittier Ranch by Lennar is a highly anticipated community that offers brand-new single -story
residences ranging from approximately 1,946 to 2,284 square feet of living spaces with three and
four bedrooms, two to three bathrooms and two -bay garages to three -bay garages. This charming
neighborhood, with low taxes, offers large yards and covered patios. The interiors will feature gourmet
appliances, upgraded cabinetry, granite slab countertops and spacious bedrooms.
Leighton provided field observation and testing services during the re -conditioning of the subject
residential lot. The re -conditioning process consisted of removal of the upper 1 foot, scarification,
moisture conditioning and compaction of the removal bottom, and placement of compacted fill
to finish grade. Based on the results of our testing, the subgrade soils have the required relative
compaction of 90 percent per ASTM D1557. From a geotechnical viewpoint, it is our opinion that the
subject home sites are suitable for the intended use. The laboratory testing indicates that the subject
lots have a Very Low Expansion Potential. The foundation design parameters provided in the referenced
reports remain valid.
M.
City of La Quinta
Proposal to Provide Geologic Report Review Services
i - =,"�If��ti►#����11f��'�C��'�.r�.T��f���i�'�ili�r�r�r� : : ���
Leighton and Associates conducted a fault study for the proposed new clubhouse located within the
Desert Dunes Development, Desert Hot Springs area of unincorporated Riverside County California.
There are two design considerations for the clubhouse that are currently proposed. One design
includes maintaining the existing clubhouse with only minor modifications. The second proposal
includes removing the existing structure and replacing it with a new clubhouse. However, the county
geologist has indicated that additional studies to investigate possible faults on the site will be required
if a new structure is planned. The existing clubhouse currently serves the Desert Dunes Golf Course.
17
City of La Quinta -%`
Proposal to Provide Geologic Report Review Services t
o
Vintage Club, Pulte I Indian Well&J
From 1979 to 1985, Leighton and Associates performed geotechnical and geological investigations for
the Vintage Club and Resort project. Leighton's services included materials testing, lake inspection,
design and consultation for groundwater resources, soil and foundation engineering, seismic hazard
evaluations, and field inspection services during construction for this architectural and engineering
award winning resort. Prominent among the country clubs in the Palm Springs/Coachella Valley
area, the Vintage Club is nestled into rocky coves at the northern edge of the Santa Rosa Mountains
overlooking the city of Indian Wells.
Most recently, Leighton provided preliminary geotechnical investigation for the renovation of the
existing restaurant and locker rooms with additions to the existing buildings.
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City of La Quinta �.
Proposal to Provide Geologic Report Review Services
_DmettAands UnifjCdAQgW District I ts„Ugrnto_j
Palm Desert High School
This new high school includes nine new buildings —Administration/ Library, Physical Education,
Amphitheater, Performing Arts/Food Services, Science Center, and Technology Center. Leighton
determined that near surface eolian deposits were unsuitable for the support of structures.
Recommendations were provided within proposed building footprints to over -excavate loose soils
sands, wet to or at slightly above optimum moisture, and then place and compact in lifts.
Leighton provided full-time geotechnical observation and testing during
building pad over -excavation and recompaction, utility trench backfilling,
and slab -on -grade subgrade compaction. We also performed geotechnical
laboratory testing of on -site soils and imported aggregate base materials to
determine the maximum dry density and optimum moisture content, and
corresponding grain size distribution to match these earth materials with the
appropriate compaction curve. DSUSD was able to save more than $100,000
as a direct result of Leighton's diligent and responsive service.
La Quinta High School Expansion
This project included the construction of four new buildings and the lining of Whitewater Channel,
Leighton provided geotechnical recommendations for earthwork construction, and coordinated with
the architect and civil engineer regarding requirements for offsite improvements. Our team provided
all geotechnical and materials testing during construction for soils, pavements, structural concrete,
masonry, and steel. Leighton was also responsible for performing geotechnical and concrete laboratory
testing of slope lining associated with adjacent Whitewater Channel.
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City of La Quint -
Proposal to Provide Geologic Report Review Services -
Bo s and Girls Club of CoIche [a_1Call&v11Y.1.ec
This 30,636-square-foot, 4.86-acre clubhouse community project will include a teen center, cyber cafe,
exercise and weight room, gymnasium, community meeting room, homework center, boxing ring, an
interior courtyard for outdoor activities, outdoor basketball courts, and parking for 257 cars. The design
of the facility will incorporate many features detailed in the Mecca Design Guidelines such as Spanish
roof tiles, decorative paving, covered walkways, and lush but drought -tolerant landscaping.
Leighton provided geotechnical input on several stabilization methods for encountered saturated silts
within the over -excavation, as was described in the geotechnical investigation report. Leighton worked
with the County Inspector for the project to provide effective and efficient geotechnical services for the
project thereby saving the agency money. Leighton also performed a Limited Phase II ESA for the site,
and is currently providing geotechnical observation and materials testing services during construction.
20
City of La Quinta
Proposal to Provide Geologic Report Review Services,. `
Leighton performed an evaluation of geologic conditions in and around the downtown area of Desert
Hot Springs as part of the environmental impact report (EIR) for the Vortex Specific Plan. The Vortex
Specific Plan is intended to revitalize and upgrade the downtown area of Desert Hot Springs. Leighton
reviewed the City of Desert Hot Springs Comprehensive General Plan, California Geologic Survey (CGS)
Note 46, Guidelines for Geologic/Seismic Considerations in Environmental Impact Reports, CGS Special
Report 117, Guidelines for Evaluating and Mitigating Seismic Hazards in California, and County of
Riverside Geologic Hazards Maps, and the City of Desert Hot Springs Fault Zones Map. The plan area
is located in the heart of Desert Hot Springs; bounded by 2nd Street, Buena Vista Avenue, West Drive,
and Mesquite Avenue.
As well as several geologic investigation reports previously performed in the downtown area and
sequential stereoscopic aerial photographs of the area. Leighton analyzed the available data to provide
summaries of the local and regional geologic structure, fault rupture hazard, a seismic and coseismic
activity, secondary seismic hazards, liquefaction potential, slope stability, groundwater conditions,
geothermal activity, seismically induced settlement and ground subsidence, compressible and
collapsible soil, expansive and corrosive soil, rippability and oversized rock, wind and water erosion,
oil, gas geothermal, and mineral resources. We prepared a written report summarizing the finding of
our data research and field investigation. Our report also included recommendations for subsurface
exploration and laboratory testing to evaluate the engineering characteristic of the near surface soils
and generalized geotechnical recommendations for development of the Specific Plan area.
21
City of La Quinta
Proposal to Provide Geologic Report Review Services
Leighton performed a peer review of existing geotechnical documents for the proposed Eagle Canyon
Dam located at the Cathedral City/Palm Springs boundaries. The geotechnical document review
was performed in accordance with California Geologic Survey Notes 41 and 46 as a portion of the
Environmental Impact Report for the project.
The proposed dam will be constructed under the authority of Riverside Flood Control and Water
Conservation District to provide a detention basin and flood control structure across the mouth of Eagle
Canyon. The proposed dam will be approximately 65 and 95 feet high at the outer and inner dam faces,
respectfully, and will span the canyon for a crown width of approximately 335 feet.
22
ty of La Quir`-
n,
Proposal to Provide Geologic Report Review Services
CLIENT REFERENCES
Company.
City of Temecula
Scott Cooper
951.506.5137
Lake Elsinore Unified School District
Greg Bowers
951.253.7015
The Macklin Companies
Richard Macklin
949.752.8977
Highland Fairview Operating Co.
Brian Hixson
714.824.8023
SUBCONTRACTED SERVICES
Based on the scope of service, Leighton will not require subcontractors.
23
City of La Quinta `3
Proposal to Provide Geologic Report Review Services
3. UNDERSTANDING AND APPROACH
Our goal is to provide the City with high quality timely services and meet
project deadlines and budgets. Due to our office location and past Leighton's Palm Desert office is
experience with the City staff, we believe that we are distinctly qualified to less than 10 miles from the La
achieve these goals; and in fact we see ourselves as an extension of the Quinta's City Hall.
Planning Department. Our experience with the City of La Quinta, and other
local public agencies and private developers is extensive and highlighted by
very successful projects. We have always demonstrated technical competence and responsiveness and we are ready
to do the same for the City's upcoming Plan Review projects.
Through previous successful on -call public works contracts, we believe the most important factor to ensure project
success is communication and being proactive in resolving or identifying potential holes in the project scope and
budgets. Communication with the project team on all levels is the foundation of our approach to all projects. Task
order priorities such as budget, scope, deliverables and timing will be established for each project and after
communication with the City project manager. Leighton will use the best combination of technical staff to deliver task
orders on time and meet the project priorities.
Primary communications will be through Leighton's Project Manager, Mr. Bob Riha, PG, CEG. Mr. Riha will be the
single point of contact regarding each project task order, which will greatly reduce the potential for
miscommunications. All Leighton personnel are equipped with cellular phones that are also capable of texting and
transmitting site photographs to allow complete and nearly instant communications between field staff and our
project manager/engineer. This communications system provides our field personnel immediate access to the project
manager, avoiding the potential for mistakes and costly delays.
CITY TASK ORDER ASSIGNMENTS OR REQUESTS FOR PROPOSAL: Project initiation is anticipated to begin with a
phone call or email to our office, Task Orders or requests for proposal (RFP). City Task Order assignments may be as
simple as a phone call to Mr. Riha with a brief description of the project, location, and requested services or may be a
formal written description of the project with geologic/geotechnical reports and project plans depending on the
project/site and needs of City personnel. Project clarification, schedule and scope may be communicated at that time.
The RFP will be carefully reviewed, any provided and in-house documents including our work in the vicinity, web
based resources and other documents will be reviewed to understand the project area and to develop the appropriate
scope of planned work. A written proposal will then be prepared outlining our
scope assumptions, schedule, deliverable, and fee based on our understanding of
the Task Order. Upon review and approval by the City, a meeting may be held Timeline:
with City staff to discuss project details and coordination. It is anticipated that Generally less than five days
the primary Task Order assignments will be in the area of geologic/geotechnical for written proposal
report/plan review.
Scope of Services, Approach and Timeline
La Quinta's geologic report review process is anticipated to require timely review of applicants submitted
geologic/geotechnical reports for a variety of projects that may include private, public, or quasi -public, or public -
private development projects located within the city. The geologic/geotechnical review will be conducted pursuant to
the Alquist-Priolo Earthquake Fault Zoning Act and Riverside County Fault Hazard Zone and in accordance with County
Guideline for Review of Geotechnical and Geologic Reports. Each project may require a special combination of
services — a portion or all of the services described herein may be necessary and additional services not listed may also
be required. We understand the importance of timely report and plan peer review when developing applicants'
submittal for approval.
As a result of Leighton's extensive experience with on -call contracts, our project team is aware of the conditions of
such a contract and we are fully prepared to provide all services that may be requested by the City of La Quinta.
24
City of La Quinta -'
Proposal to Provide Geologic Report Review Services )
Mr. Riha will return a -mails and phone calls within 24 business hours (excluding City recognized holidays). A brief
description of our approach and timeline in each area is summarized below.
Project Task Orde
Task Orders will first be received by Mr. Riha who will then review the provided documents, in-house documents
including our work in the vicinity, up-to-date web based resources and other documents to understand the project
area and to develop the appropriate scope of planned work. When requested, Leighton can provide submittal
requirement's to the applicant prior to their submittal of a formal application with the City of La Quinta.
A scope and fee proposal using a flat rate (fixed fee) basis will be prepared and returned generally within 5 days of the
initial request.
Report and Plan Review
Mr. Riha will review all provided documents to ensure that the reports, plans and specifications are prepared in
accordance with the State Alquist Priolo Fault Zoning Act, County of Riverside Guidelines for Review of Geotechnical
and Geologic Reports and City requests. It is anticipated plans and reports will be submitted electronically using
Adobe Acrobat (Professional) and other city web based data management/transmission methods.
For subsurface fault investigations, Mr. Riha may review the fault trench exposures or other site conditions with the
applicants' geologic consultant to first hand witness the consultants' findings and will provide comment on the
findings and or need for additional information at that time. This approach may save the applicant (and City) time and
expense in needing to extend the investigation.
A letter of acceptance or request for additional information will be prepared within 10-15 days of acceptance of Task
Order. Larger projects (Multiple site visits or complex site geologic conditions) may require an additional 5 days. All
subsequent reviews (2"d, 3ra plan check etc.) will be completed within 8-10 business days. An average of no more than
3 review rounds before approval of applicant's reports is desired.
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