Array ( [0] => Array ( [category] => Bridges [icon] => red [id] => 36 [title] => Early Childhood Center Bridge Replacement [number] => 60100 [description] => After flood waters washed out the two-lane bridge to the Martinez Early Childhood Center in December 2006, Cal Engineering and Geology prepared emergency plans and permitting assistance to quickly establish a temporary footbridge. The bridge was the only access to the Childhood Center which served up to 30-40 kids who came from low income homes and disadvantaged families. CE&G worked to keep the center going while a new bridge was being designed and constructed by preparing calculations, plans, and specifications for the replacement 2 lane vehicular bridge. CE&G also assisted preparing grant applications to FEMA for funding of the replacement bridge. The project required coordiantion with the property owners, City of Martinez, California Department of Fish and Game, Contra Costa Fire District, and FEMA. [lat] => 38.007085571916534 [lng] => -122.130203247070312 [street] => 615 Arch Street [city] => Martinez [state] => CA [categoryID] => 1 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 145 [projectID] => 36 [filename] => Early Childhood Bridge Final.JPG [title] => [description] => ) ) ) [1] => Array ( [category] => Bridges [icon] => red [id] => 21 [title] => Hidden Lakes Pedestrian Bridge [number] => 50380 [description] => The goal of the Hidden Lakes Park Pedestrian Bridge project was to replace two existing timber pedestrian bridges at Hidden Valley Park and Hidden Lakes Open Space in Martinez, California, with prefabricated steel bridges, while utilizing the existing abutments and bents. In addition to conveying pedestrian traffic through the park, the bridges provided support of an 8 inch ductile iron sewer pipe owned by the Central Contra Costa County Sanitary District (CCCSD). The longer bridge on the south side of the project site consists of six spans total, four spans approximately 48 feet in length, and two smaller spans approximately 28 feet and 14 feet in length. The shorter bridge on the north side of the project site consists of three spans total with lengths of 48 feet, 43 feet, and 24 feet. Cal Engineering & Geology prepared plans, specifications, and an engineer’s estimate for construction of the replacement bridge superstructures, the sanitary sewer line, and associated site work. In addition, CE&G provided project development and coordination with the City, the CCCSD, the Department of Fish and Game, and prospective bridge manufacturers. Under a separate contract with the CCCSD, CE&G performed planning-level cost estimates of design alternatives to assist the sanitary district in determining appropriate cost allocations for the various components of the project. [lat] => 37.981155845608390 [lng] => -122.092649638652800 [street] => Hidden Lakes Park [city] => Martinez [state] => CA [categoryID] => 1 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 206 [projectID] => 21 [filename] => Photo.JPG [title] => [description] => ) ) ) [2] => Array ( [category] => Bridges [icon] => red [id] => 505 [title] => Lafayette Community Park Bridge [number] => 70110 [description] => Cal Engineering & Geology was initially retained by the City of Lafayette to complete a siting study and geotechnical investigation for a new 135 foot long prefabricated steel bridge to be constructed over Las Trampas Creek. A geologic reconnaissance of the creek banks in the vicinity of the existing Community Center parking lot was completed and a location was recommended for the bridge based on circulation, locations of existing pathways, and geotechnical conditions along the creek. The city then requested that CE&G undertake responsibility for the entire project, including full design and construction observation and testing services. Working closely with the city’s planning and engineering staffs, CE&G prepared two separate Plans, specifications, and estimates (PS&E) packages: 1) for supplying the pre-fabricated bridge; and 2) for construction of the pile supported abutments, installation of the prefabricated bridge, and construction of the associated pathways and creek bank restoration and stabilization measures. By separating the two contracts, the City was able to speed up the overall construction process by pre-ordering the bridge from the qualified low bidder while the bid process was taking place for the installation and construction contract. When the contractor was ready to proceed with construction, the bridge had already been ordered, manufactured, and waiting for delivery. This design and contracting method saved the City several thousands of dollars due to no contractor mark-up on the purchased bridge. [lat] => 37.863538147074580 [lng] => -122.098188400268550 [street] => [city] => Lafayette [state] => CA [categoryID] => 1 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 152 [projectID] => 505 [filename] => Lafayette Community Park Bridge Web Photo.JPG [title] => [description] => ) ) ) [3] => Array ( [category] => Bridges [icon] => red [id] => 18 [title] => Moraga - Commons Park Pedestrian Bridge [number] => 50050 [description] => Cal Engineering & Geology was retained by the Town of Moraga to complete a siting study, and geotechnical investigation, and to prepare plans, specifications, and estimates for a new 140 foot long prefabricated steel bridge to be constructed over a tributary of Laguna Creek. The bridge was needed to connect an under-utilized area of the Moraga Commons Park to the East Bay Regional Park District’s (EBRPD) Lafayette-Moraga Trail. The project was funded entirely with State of California grants for public parks. [lat] => 37.841328195867334 [lng] => -122.123803496360780 [street] => Moraga Road [city] => Moraga [state] => CA [categoryID] => 1 [level] => 2 [thumbID] => 155 [filename] => Moraga Commons Park Pedestrian Bridge Web Photo.JPG [fileTitle] => [fileDescription] => [thumb] => Moraga Commons Park Pedestrian Bridge Web Photo.jpg [files] => Array ( [0] => Array ( [id] => 155 [projectID] => 18 [filename] => Moraga Commons Park Pedestrian Bridge Web Photo.JPG [title] => [description] => ) ) ) [4] => Array ( [category] => Construction Observation [icon] => brown [id] => 811 [title] => 81st Avenue Branch Library [number] => 80620 [description] => In accordance with our on-call contract with the City of Oakland, Cal Engineering & Geology is providing Inspector-of-Record services for the construction of a new, state-of-the-art public library in East Oakland adjacent to two small public elementary schools. Working with our subconsultant, CE&G is providing inspection supervision and documentation of all phases of construction for the $14.3 million project as they relate to DSA (Division of the State Architect) jurisdiction. The 21,000 square foot facility will include a storytime and family reading alcove, children’s multi-purpose room, a teen services area, preschool and family areas, an internet café, a copy center, a community meeting room, and a library classroom. The project was funded in part by the California Reading and Literacy Improvement and Public Library Construction and Renovation Act of 2000 (Proposition 14). [lat] => 37.750985758393895 [lng] => -122.189855575561520 [street] => 81st Avenuene [city] => East Oakland [state] => CA [categoryID] => 17 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 195 [projectID] => 811 [filename] => Photo.jpg [title] => [description] => ) ) ) [5] => Array ( [category] => Construction Observation [icon] => brown [id] => 817 [title] => Veterans Memorial Building [number] => 40440 [description] => In early 2004, Cal Engineering & Geology was asked by the City of Lafayette to take over the geotechnical services required for construction of a new 8,000 square feet Veterans’ Memorial building in Lafayette, California. The original geotechnical consultant had worked directly for the architect and CE&G was requested by the City of Lafayette to take over the project. After reviewing the existing project report, CE&G consulted with the City and reviewed the project plans. Items were modified on the plans and revisions to some of the recommendations in the report were made. During construction CE&G provided observation and testing during removal and replacement of poor subgrade materials and provided inspection during footing preparation. The building was completed in spring 2005. [lat] => 37.895137719322120 [lng] => -122.105500102043150 [street] => [city] => Lafayette [state] => CA [categoryID] => 17 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 216 [projectID] => 817 [filename] => Photo.jpg [title] => [description] => ) ) ) [6] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 799 [title] => Alameda Creek Levee Certification [number] => 80150 [description] => As a subcontractor to Wood Rodgers, Inc., Cal Engineering & Geology provided the Alameda County Flood Control & Water Conservation District with geotechnical consulting services to certify approximately 21.5 miles of levees with the Federal Emergency Management Agency (FEMA) per 44 CFR (Code of Federal Regulations) 65.10 requirements. The project includes 18 miles of levees along Alameda Creek in Fremont, California, approximately 3 miles of levees along King-Lyon properties in Newark, and less than a mile of levee along Sulfur Creek in Hayward, California. After reviewing available technical documents for the levees, CE&G and the project team developed a subsurface exploration and testing program that could be used to support the geotechnical analyses completed to certify the above listed federal and non-federal levees as meeting the standards for design, operation, and maintenance set forth in 44 CFR 65.10. The subsurface exploration program was entirely coordinated and completed by CE&G. The laboratory soils testing program included strength testing, hydrometer and sieve analyses, consolidation testing, and index properties testing. The majority of the testing was completed at CE&G’s laboratory in Oakland. The exploration and testing were completed on time and within budget and the necessary geotechnical analyses are currently underway. [lat] => 37.578460205250245 [lng] => -122.055187225341800 [street] => [city] => Alameda County [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 138 [projectID] => 799 [filename] => Alameda Levees.jpg [title] => [description] => ) ) ) [7] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 755 [title] => Alhambra Creek Beaver Dam [number] => 80200 [description] => Cal Engineering & Geology provided geotechnical observations and design of an emergency sheetpile wall system to stabilize the east bank of Alhambra Creek in order to protect several commercial buildings from being undermined by dens excavated by the famous Alhambra Creek beavers who established residence in downtown Martinez in 2007. Design and bidding were completed on an emergency basis in order to completed construction prior to the onset of winter rains. In the end of this politically sensitive project, no beavers were harmed. [lat] => 38.014017213643996 [lng] => -122.135224342346190 [street] => Henrietta Street [city] => Martinez [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 184 [projectID] => 755 [filename] => Alhambra Creek Beaver Dam Web Photo.png [title] => [description] => ) ) ) [8] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 508 [title] => Creek Bank Repair at Vargas Road [number] => 990850 [description] => Cal Engineering & Geology completed a geotechnical investigation and geotechnical report, design concept report, and full plans, specifications, and engineer’s estimate (PS&E) in preparation for the repair of a narrow rural road failure situated above the deeply incised Ephemeral Creek in Fremont, California. The creek bank stabilization measures included biotechnical slope stabilization and installation of rock weirs within the creek bed. The existing road was relocated from the top of the creek bank, requiring widening of the road at the base of an ascending slope. The widening was completed by over-excavating the existing slope and constructing a geogrid reinforced steepened slope. Part-time observation of the construction was provided to assist County inspection personnel on an as-needed basis. [lat] => 37.565687895323116 [lng] => -121.930818557739260 [street] => Vargas Road [city] => Fremont [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 201 [projectID] => 508 [filename] => Photo.jpg [title] => [description] => ) ) ) [9] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 510 [title] => Don Castro and Cull Creek Dams [number] => 41190 [description] => On behalf of the Alameda County Flood Control District, Cal Engineering & Geology completed a State-mandated geotechnical exploration and seismic stability analyses of two embankment dams in Castro Valley, California. Preliminary studies of the dams had indicated that their foundations were believed to be potentially liquefiable based on limited exploration and construction data from the 1960s. Don Castro Dam is a 65 foot high zoned earth fill embankment constructed in a narrow canyon in the hills above Castro Valley. Cull Creek Dam is a 45 foot high zoned earth fill embankment which also serves as a local road. The exploration work completed for the studies included drilling and sampling of borings using mud-rotary drilling equipment, SPT testing, sampling using drive samplers and barrel samplers, and the installation and monitoring of standing head piezometers. Laboratory strength testing of the embankment and foundation materials was also completed. Analyses included liquefaction analysis of the foundation and static and pseudostatic slope stability, and simplified seismic deformation analyses. Work was coordinated with the technical staff of the California Division of Safety of Dams. The foundation for Cull Creek Dam was determined to be liquefiable. The dam was determined to be seismically unstable and in need of remedial measures. Conceptual remedial measures were developed and presented for evaluation to the Flood Control District and the Division of Safety of Dams. [lat] => 37.709542867495415 [lng] => -122.056174278259280 [street] => Don Castro [city] => Castro Valley [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 143 [projectID] => 510 [filename] => Don Castro and Cull Creek Dams Web Photo.jpg [title] => [description] => ) ) ) [10] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 22 [title] => Flood Control Channel Improvements [number] => 60450 [description] => Cal Engineering & Geology completed a geotechnical investigation and flood wall design on behalf of the Alameda County Flood Control District for the improvement of an existing earth lined flood control channel in west Hayward. The original scope of work for the project was completed within a tight five week schedule from notice to proceed through completion of the published report. The project included investigations and design assistance for the widening and stabilization of 2500 linear feet of an earthen flood control channel and levee. CE&G’s services included analysis and design of 2 to 3 foot high retaining/flood walls and stability assessment of proposed channel and levee modifications. After issuance of the original report, we provided additional services relating to a re-design of the originally conceived project. Design calculations and detailing were ultimately provided for a sheetpile flood wall to be constructed as part of the improvements. The project proceeded on time and within budget. [lat] => 37.645299999999999 [lng] => -122.134799999999998 [street] => [city] => Hayward [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 203 [projectID] => 22 [filename] => Photo.jpg [title] => [description] => ) ) ) [11] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 509 [title] => Galindo Creek Restoration [number] => 10950 [description] => In early 2000, the City of Concord and the California Department of Fish and Game (CDFG) became aware of dumping of concrete and related construction debris into a privately owned segment of Galindo Creek. The debris and rubble had partially blocked the creek channel and created a constriction that would cause localized flooding in the area if left unabated. After the property owner refused to abate the situation, the City contracted with Cal Engineering & Geology to prepare plans and specifications to remove the debris and restore the creek to pre-debris condition. On behalf of the City, CE&G coordinated with CDFG to obtain permits and then provided observations during construction. The project was successfully completed and the creek bank was revegetated within three months. [lat] => 37.975462211956010 [lng] => -122.028579711914060 [street] => Galindo Creek [city] => Concord [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 204 [projectID] => 509 [filename] => DCP00935.JPG [title] => [description] => ) ) ) [12] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 638 [title] => Grizzly Creek Restoration [number] => 71020 [description] => As a sub consultant to Sycamore Associates, Cal Engineering and Geology provided geotechnical exploration and civil design services for a biotechnical stabilization on a portion of Grizzly Creek in the Lafayette Community Park. The project site had down cut over several years and had caused localized failure of the banks in several areas. CE&G designed a planted redwood log crib wall and recommended flattening of the downstream banks to allow for the formation of a small flood terrace. The terrace and crib wall were planted with native shrubs and the site was maintained for three years. The project successfully reestablished the creek segment without the need for hard armoring of the creek banks. [lat] => 37.859624835652040 [lng] => -122.088596820831300 [street] => Lowell Lane East [city] => Lafayette [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 149 [projectID] => 638 [filename] => Grizzly Creek Web Photo.JPG [title] => [description] => ) ) ) [13] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 511 [title] => Lakeshore Storm Drain Improvements [number] => 60420 [description] => The purpose of the project was to reduce flooding along Lakeshore Avenue between Lake Park Avenue and Mandana Boulevard. Cal Engineering and Geology provided geotechnical engineering consulting services for construction of a 3000-foot long 6x8 foot pre-cast concrete box culvert adjacent to an existing cast-in-place box constructed in the early 1960s. The outfall of the line discharges into Lake Merritt. The variable soil conditions along the alignment required that the downstream 1200 feet of the line be supported on driven piles while the remainder of the project could be constructed as a conventional cut and cover box culvert. [lat] => 37.805986463750310 [lng] => -122.258090972900390 [street] => Lakeshore Avenue [city] => Oakland [state] => CA [categoryID] => 8 [level] => 2 [thumbID] => 183 [filename] => Lakeshore Web Photo.jpg [fileTitle] => [fileDescription] => [thumb] => Lakeshore Web Photo.jpg [files] => Array ( [0] => Array ( [id] => 183 [projectID] => 511 [filename] => Lakeshore Web Photo.jpg [title] => [description] => ) ) ) [14] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 737 [title] => Las Trampas Creek Emergency Stabilization [number] => 987440 [description] => Cal Engineering & Geology provided emergency design services and permitting assistance for a federally-funded repair of a creek bank that failed during the New Years Eve floods of 2005-2006. The bank failure threatened a single family residence situated on top of the bank. High flows in Las Trampas Creek caused an existing gabion revetment to fail and undermine a 20 foot tall bank below a residence. The city and property owner obtained funding from the National Resources Conservation Service (NRCS) Emergency Watershed Protection program to stabilize the failed creek bank. The repair consisted of removing the damaged gabions and constructing vegetated rock slope protection embankment in the lower portion of the creek bank and a planted geogrid reinforced embankment above. Biodegradable containers were placed within the rock slope protection to facilitate planting of willows. CE&G worked with the City and the property owner to obtain the necessary permits from the California Department of Fish and Game, United States Fish and Wildlife, and the San Francisco Regional Water Quality Control Board. Observation and testing services during construction were also provided. [lat] => 37.902761419495940 [lng] => -122.142348289489750 [street] => Via Los Colorados [city] => Lafayette [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 153 [projectID] => 737 [filename] => Las Trampas Creek Web Photo.jpg [title] => [description] => ) ) ) [15] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 507 [title] => Mt. Diablo Creek at Ayers Road [number] => 10940 [description] => On behalf of the City of Concord, Cal Engineering & Geology prepared plans, specifications, and estimates, and provided permitting assistance engineering support during construction for the Mt. Diablo Creek bank stabilization and restoration project located at the Ayers Road overcrossing. In the area of the undercrossing, an excessive accumulation of sediment was present due to a concrete rock slope protection constriction at the downstream side of the bridge abutment. The intent of the project was to remove the excessive sediment from the creek, remove the concreted rock slope protection (RSP), and widen the downstream constriction to reduce the potential for continued sedimentation. The improvements designed by CE&G incorporated planting a geocell revetment with A-Jacks units along the toe of creek bank. Willow and other native planting were also used in the design. This hydrid bioengineering/hard armor system allowed for the needed localized widening of channel without acquiring additional easements from the adjacent private property owners. The project was permitted by the US Fish and Wildlife, California Department of Fish and Game, and San Francisco Regional Water Quality Control Board. The constructed project was successfully vegetated in the first few months following construction. The site has since withstood two 20+ year storm events without any noticeable erosion of the bank. [lat] => 37.959493156611360 [lng] => -121.967039108276370 [street] => Ayers Road [city] => Concord [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 157 [projectID] => 507 [filename] => Mt Diablo Creek at Ayers Road Web Photo.JPG [title] => [description] => ) ) ) [16] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 801 [title] => Murders Creek Bank Stabilization [number] => 20550 [description] => Cal Engineering & Geology completed a geotechnical investigation, alternatives study, and prepared plans, specifications, and estimates for design and construction of a planted geocell creek bank repair on a narrow and steeply banked 1H:1V (horizontal: vertical) section of Murders Creek. The soft armor stabilization method included use of native plantings of willow pole cuttings and berry bushes. Within three weeks after construction, on New Years Eve 2005-2006, the soft armor measures were tested by a 50 year storm event that partially eroded the vegetated geocell structure. The toe of the bank was retrofitted with A-Jack revetment units and the site was re-vegetated. The retrofit work was completed in 2006 and is now fully vegetated and has performed well since. [lat] => 37.930557316884588 [lng] => -122.079863548278809 [street] => 2129 Hoover Court [city] => Pleasant Hill [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 163 [projectID] => 801 [filename] => Murderers Creek Web Photo.jpg [title] => [description] => ) ) ) [17] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 722 [title] => San Leandro Creek Stabilization [number] => 987100 [description] => In 1998 record flows in San Leandro Creek caused failure of several banks along the creek, some of which threatened residential structures and associated improvements. The Alameda County Flood Control District was able to obtain federal funds to implement into the bank stabilization repairs needed at Lee Avenue, in Hayward California. Do the failure of a 35 foot tall creek bank segment that was encroaching to about 3 feet of a house, CE&G was retained by the District to complete a geotechnical investigation, complete repair design, and provide observation and testing services during construction. The geotechnical exploration was accomplished with limited access drilling equipment and complete plans, specifications, and estimates were prepared. The design consisted of a buried sheet pile wall at the toe of the slope and reconstructed the bank as a geogrid reinforced slope with a planted coir wrap in the lowermost 15 feet. CE&G also coordinated with the District to obtain the necessary permits from the California Department of Fish and Game (CDFG), U.S Fish and Widlife (USFW), and San Francisco Regional Water Quality Control Board (SFRWQCB). CE&G provided observation and testing services during construction. [lat] => 37.730963014993170 [lng] => -122.152154445648200 [street] => Lee Avenue [city] => San Leandro [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 171 [projectID] => 722 [filename] => San Leandro Creek Web Photo.jpg [title] => [description] => ) ) ) [18] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 39 [title] => San Ramon Creek Emergency Stabilization [number] => 60140 [description] => Cal Engineering & Geology provided emergency design and engineering services during construction of federally-funded repairs of a creek bank that failed during the New Years Eve floods of 2005-2006, which threatened a single family residence situated on top of the bank. Emergency repair measures were needed to stabilize the site and save the house. The repair included the placement of more than 400 tons of rip rap to protect the toe of the existing sheet pile wall and installation of 100 feet of new sheet pile wall with helical anchor tiebacks. [lat] => 37.858743888412130 [lng] => -122.033718824386600 [street] => Finley Lane [city] => Alamo [state] => CA [categoryID] => 8 [level] => 2 [thumbID] => 173 [filename] => San Ramon Creek Web Photo.JPG [fileTitle] => [fileDescription] => [thumb] => San Ramon Creek Web Photo.jpg [files] => Array ( [0] => Array ( [id] => 173 [projectID] => 39 [filename] => San Ramon Creek Web Photo.JPG [title] => [description] => ) ) ) [19] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 816 [title] => Shoreline Levees [number] => 90940 [description] => Cal Engineering & Geology has been providing geotechnical exploration, laboratory testing, and design for approximately 5 miles of new shoreline levees to be constructed by the Alameda County Flood Control and Water Conservation District. The project is being completed in tandem with the South Bay Salt Pond Restoration Project and will address shoreline flooding including the impacts of anticipated sea level rise and wave run-up. The geotechnical exploration program has included extensive cone penetration testing and mud rotary drilling over soft bay mud deposits of variable thickness. The project has required extensive interaction and collaboration with hydrology and hydraulic consultants, the District, the California Department of Fish and Game, PG&E, and the East Bay Regional Park District. Completion of the design is anticipated in early 2011 with construction to follow dependent on funding. [lat] => 37.586758481479116 [lng] => -122.094497680664060 [street] => [city] => Hayward & Union City [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 214 [projectID] => 816 [filename] => Photo.jpg [title] => [description] => ) ) ) [20] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 720 [title] => Trenchless Culvert Below Interstate 880 [number] => 100050 [description] => In 2008, Cal Engineering & Geology was retained by the Alameda County Flood Control District to complete a subsurface exploration and to prepare a geotechnical data and design report for the trenchless pipe jacking of a 175 feet long, 96 inch diameter steel casing to house a 72 inch reinforced concrete pipe culvert below Interstate 880 on the border between Newark and Fremont. The culvert was to be installed adjacent to an existing reinforced concrete box culvert in order to increase the flood conveyance capacity below the freeway. Geotechncial design recommendations for the temporary excavations and shoring and permanent headwalls and wingwalls were provided. CE&G was subsequently retained in 2010 to assist the District in the design of the project and to prepare the construction documents. CE&G teamed up with two subconsultants in order to complete the project within the timeframe specified. The greatest design challenge for the project involved jacking of the steel casing below a Caltrans masonry block soundwall supported on a cast in place concrete retaining wall. The retaining wall footing included a key that protruded below, which conflicted with the proposed plane elevation of the steel casing. The design therefore required permanent shoring for the retaining wall and sound wall to facilitate removal of the key during construction and allow the steel casing to abut the bottom of the footing. The permanent shoring system design consisted of cast-in-drilled-hole concrete piles, pile caps, and a concrete beam. The final design was reviewed and approved by Caltrans structural and water resources groups. CE&G also prepared the tunneling and concrete pipe specifications and assisted in preparing the engineer’s estimate for the project. [lat] => 37.538928675431850 [lng] => -122.016992568969730 [street] => I-880 Crossing [city] => Newark [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 215 [projectID] => 720 [filename] => Photo.jpg [title] => [description] => ) ) ) [21] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 809 [title] => Upper Sand Creek Flood Control Dam [number] => 81070 [description] => As a subcontractor to GEI Consultants, Inc., Cal Engineering & Geology is providing the Contra Costa County Flood Control & Water Conservation District with geotechnical consulting services to design and construct a new 1,000 acre-foot flood control basin in Antioch, California. The facility is subject to review by the California Division of the Safety of Dams and will include a 40 foot tall earth embankment dam and a 15 foot tall saddle dike embankment. Geotechnical challenges at the site include liquefiable foundation materials and an ancient landslide on the right abutment of the planned dam. These geologic hazards are being investigated and analyzed to determine its potential impact on the dam and basin. CE&G is providing field exploration services, geologic and geotechnical analyses of the ancient landslide, foundation characterization, and assistance in the preparation of construction plans and specifications. Exploration included approximately 14 boreholes and coreholes, 33 exploratory test trenches and pits, and downhole geotechnical testing. [lat] => 37.946803401691575 [lng] => -121.772933006286620 [street] => Sand Creek [city] => Antioch [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 193 [projectID] => 809 [filename] => Upper Sand Creek Web Photo.jpg [title] => [description] => ) ) ) [22] => Array ( [category] => Creeks and Flood Control [icon] => orange [id] => 808 [title] => UPRR Culvert Undercrossing [number] => 40910 [description] => In 2004, Cal Engineering & Geology was retained by the Alameda County Flood Control District to complete a subsurface exploration and prepare a geotechnical design report for the trenchless pipe jacking installation of a new 8 foot diameter concrete culvert adjacent to an existing culvert that passes beneath the Union Pacific Railroad yard in Union City (UPRR). The work required extensive coordination with the UPRR and District during subsurface exploration. The geotechnical exploration project also incorporated environmental sampling taken to assess the potential contamination of soils through which the pipe would be jacked. Geotechnical design recommendations for the jacking pit shoring were provided. The project was designed by District staff and was constructed successfully. [lat] => 37.528106581251990 [lng] => -122.015919685363770 [street] => Smith Avenue [city] => Newark [state] => CA [categoryID] => 8 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 192 [projectID] => 808 [filename] => Trenchless Cuvert Installation Web Photo.jpg [title] => [description] => ) ) ) [23] => Array ( [category] => Engineering Services [icon] => brown [id] => 803 [title] => Jamestown Landfill Cover Reconstruction [number] => 70600 [description] => Cal Engineering & Geology was retained by Geomatrix, Inc. to redesign the cover system for the Jamestown Landfill in Tuolumne County, California. Using computer software with 3-dimensional modeling capabilities, CE&G designed the final cover improvements to mitigate the observed conditions and meet specified stability requirements. The entire cover of the landfill was removed and reconstructed within it’s original footprint with slope inclinations that were 2.5H:1V or flatter A buttress on the north side of the landfill was constructed to accommodate the relocation of solid waste and flattening of steepened slopes. [lat] => 38.106466505982860 [lng] => -119.999542236328120 [street] => [city] => Tuolumne Coutny [state] => CA [categoryID] => 15 [level] => 2 [thumbID] => 181 [filename] => Jamestown Web Photo.JPG [fileTitle] => [fileDescription] => [thumb] => Jamestown Web Photo.jpg [files] => Array ( [0] => Array ( [id] => 181 [projectID] => 803 [filename] => Jamestown Web Photo.JPG [title] => [description] => ) ) ) [24] => Array ( [category] => Geologic and Geotechnical Peer Review [icon] => yellow [id] => 637 [title] => Codornices Creek [number] => 71000 [description] => Cal Engineering & Geology was responsible for reviewing the geotechnical report, project plans, and specifications on behalf of the City of Albany. The design consisted of installation of step pools, installation of a log cross vane, removal of six eucalyptus trees, stream bank grading, and planting in two separate areas along Codornices Creek. The step pools consisted of boulders and gravel placed on the creek bed thereby creating small pools during normal flows with step heights of 6 inches to allow fish passage upstream. [lat] => 37.881594286104300 [lng] => -122.283968925476070 [street] => Albina Avenue [city] => Albany [state] => CA [categoryID] => 18 [level] => 2 [thumbID] => 200 [filename] => Photo.jpg [fileTitle] => [fileDescription] => [thumb] => Photo.jpg [files] => Array ( [0] => Array ( [id] => 200 [projectID] => 637 [filename] => Photo.jpg [title] => [description] => ) ) ) [25] => Array ( [category] => Geologic and Geotechnical Peer Review [icon] => yellow [id] => 718 [title] => Five Canyons Subdivision [number] => 21320 [description] => From 1993 to 1999 Cal Engineering & Geology provided special geotechnical and geologic peer review and inspection services to Alameda County Public Works Agency for Centex Homes' 800+ home hillside Five Canyons residential development in Castro Valley, California. Services included geotechnical and engineering geologic review of roads, bridges, retaining walls, and mass grading of the project. Mass grading of the tract included over 8 million cubic yards of earthwork and construction of more than 80,000 square feet of mechanically stabilized segmental block retaining walls, landslide repairs, surface water drainage and soil nail retaining walls. CE&G was an active participant in the project partnering process with the County Centex Homes and the civil and geotechnical design consultants. Our strong working relationships with all involved parties resulted in the completion of a high quality product which the County continues to use as a example of how to review and implement large residential grading projects. [lat] => 37.684567509808480 [lng] => -122.039136886596680 [street] => Palomares Drive [city] => Castro Valley [state] => CA [categoryID] => 18 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 135 [projectID] => 718 [filename] => 5 Canyons.png [title] => [description] => ) ) ) [26] => Array ( [category] => Geologic and Geotechnical Peer Review [icon] => yellow [id] => 794 [title] => Palos Colorados [number] => 957180 [description] => Palos Colorados is a controversial residential subdivision planned for the rolling hillsides of Moraga, California. Cal Engineering & Geology provided peer review and special geologic consultation services through processing of a controversial 120+ single family home development proposed in a restricted use hillside area. Services included interpretation of hillside planning ordinances, review of geologic reports and EIR documents, testimony before Planning Commissions and Town Council, and observations during investigation phase. [lat] => 37.833784990618575 [lng] => -122.127199172973630 [street] => [city] => Moraga [state] => CA [categoryID] => 18 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 211 [projectID] => 794 [filename] => Photo.jpg [title] => [description] => ) ) ) [27] => Array ( [category] => Geologic and Geotechnical Peer Review [icon] => yellow [id] => 363 [title] => Town of Moraga Skate Park [number] => 30560 [description] => Cal Engineering and Geology provided geologic and geotechnical peer review of the geotechnical report and the grading plans for the Moraga Skatepark constructed at the Moraga Commons in Moraga, California. Our review of the geotechnical report and the grading plans for the skatepark included reconnaissance level observations of the project site and observation during construction. [lat] => 37.841444695375429 [lng] => -122.124538421630859 [street] => Moraga Commons Park [city] => Moraga [state] => CA [categoryID] => 18 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 178 [projectID] => 363 [filename] => Moraga Skate Park Web Photo.jpg [title] => [description] => ) ) ) [28] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 650 [title] => Brandt Drive Culvert Repair [number] => 80560 [description] => As a subconsultant in 2008, Cal Engineering & Geology provided geotechnical and civil design services for the partial replacement and slip lining of a damaged 66” cmp culvert running under Brandt Drive in Moraga, California. Portions of the pipe were washed away in a 2005 storm event and replaced with temporary facilities. The project included subsurface investigation and preparation of a geotechnical design report and pipe replacement alternative analysis, design of temporary steel sheetpile shoring for up to 26’ deep trench, and creation of plans and specifications for the replacement pipe and slip lined culvert and associated headwall. [lat] => 37.824802465340966 [lng] => -122.112092971801760 [street] => Brandt Drive [city] => Moraga [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 198 [projectID] => 650 [filename] => Photo.jpg [title] => [description] => ) ) ) [29] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 632 [title] => California Avenue Widening [number] => 70520 [description] => Cal Engineering & Geology prepared a geotechnical report for the widening of California Avenue in Pittsburg, California. The purpose of the project was to conduct a subsurface exploration and provide pavement design recommendations for design and construction of the improvement project. The presence of significant utilities on the south side of the roadway required coordination during the subsurface exploration phase. A 24 inch gas line was located in close proximity to the north side of the Highway 4 Caltrans right-of-way and there was a nitrogen line located nearly coincident with the existing edge of pavement. Soils testing and analyses were performed on selected samples recovered from the borings. The testing included determination of moisture content and density, Atterberg Limits, compaction curves, and Caltrans R-Value testing. Engineering analyses of the soil samples and boring logs were used to develop geotechnical design recommendations for the preparation and compaction of the pavement subgrade, mitigation options for high plasticity clay subgrade soils, and recommendations for minor cut and fill earthwork operations. The results of our geologic research, exploratory borings, laboratory testing, and engineering analyses was summarized in the geotechnical report. [lat] => 38.015411915998776 [lng] => -121.882957220077510 [street] => California Ave [city] => Pittsburg [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 199 [projectID] => 632 [filename] => Photo.jpg [title] => [description] => ) ) ) [30] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 499 [title] => Carquinez Strait Bay Trail [number] => 21690 [description] => Cal Engineering & Geology provided the geotechnical engineering and preliminary civil design and planning services for the conversion of the 1.7 mile long abandoned section of Carquinez Scenic Drive between Ozol and Port Costa in Contra Costa County. The section of the road, which was being studied, was abandoned by the county in 1983 following the development of several large landslides which made the road impassable. The geotechnical investigation completed for the project included drilling of 13 exploratory borings, laboratory testing, geologic mapping, and preparation of a preliminary geotechnical report. The Design Alternatives Report provided conceptual level alternatives for addressing the geotechnical hazards along the road. Site specific and generalized typical details for repairs consisting of tieback retaining walls, geogrid reinforced embankments, stabilization piles, soldier beam and lagging walls, and pavement stabilization were developed and presented with preliminary engineer’s estimates. [lat] => 38.024836027187980 [lng] => -122.156982421875000 [street] => Carquinez Drive [city] => Martinez [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 170 [projectID] => 499 [filename] => SF Bay Trail Web Photo.png [title] => [description] => ) ) ) [31] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 802 [title] => City of Oakland 7th Street Streetscape [number] => 80540 [description] => In 2008, Cal Engineering & Geology completed geotechnical studies and pavement design for the City of Oakland Public Works Agency in support of the City’s redevelopment of the 7th Street Gateway project in West Oakland, California. The work included more than 10 pavement corings and geotechnical borings of varying depths and the preparation of a geotechnical and pavement design report. The report also included geotechnical design recommendations for gateway and cantilever entry structures to be constructed as part of the project. [lat] => 37.820056538856065 [lng] => -122.284483909606930 [street] => Peralta Street [city] => Oakland [state] => CA [categoryID] => 2 [level] => 2 [thumbID] => 180 [filename] => City of Oakland 7th St. Web Photo.JPG [fileTitle] => [fileDescription] => [thumb] => City of Oakland 7th St. Web Photo.jpg [files] => Array ( [0] => Array ( [id] => 180 [projectID] => 802 [filename] => City of Oakland 7th St. Web Photo.JPG [title] => [description] => ) ) ) [32] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 502 [title] => Crow Canyon Road Safety Improvements [number] => 40410 [description] => Geotechnical investigation and report for 6 km realignment of Crow Canyon Road between Castro Valley and San Ramon. The geotechnical aspects of the project include excavations up to 90 m high through variable bedrock and construction of reinforced embankments and soil nail retaining walls up to 25 m tall. Horizontal continuous coring of bedrock was completed across bedding for two largest proposed cuts. Seismic refraction surveys were used to evaluate rippability of the bedrock. [lat] => 37.761351338658170 [lng] => -122.027034759521480 [street] => Crow Canyon Road [city] => Castro Valley [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 93 [projectID] => 502 [filename] => CCRoad AP34-12a.jpg [title] => Sky View [description] => ) ) ) [33] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 804 [title] => Delta De Anza Trail [number] => 70050 [description] => Under contract to the East Bay Regional Park District, Cal Engineering & Geology served as engineer of record and provided geotechnical engineering and civil design services for improvements to a 3,500 foot long section of the Delta De Anza Regional Trail in Concord, California. The section of trail is located partly in a city park and partly on a federally certified flood control levee. The portion of the trail in the park had several areas of soft subgrade and expansive soils. The portion along the levee was in a segment that was being raised to meet updated flood control requirements. Improving the trail within the park required that the subgrade issues be addressed and expansive soils be mitigated. Along the levee, all work had to adhere to the US Army Corps of Engineers’ standards. The geotechnical investigation completed for the project included drilling of 10 borings, laboratory testing, geologic mapping, and preparation of geotechnical and pavement design recommendations. The project was designed and constructed on time and within budget. [lat] => 37.982971880172500 [lng] => -122.018194198608400 [street] => [city] => Concord [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 187 [projectID] => 804 [filename] => Delta De Anza Web Photo.JPG [title] => [description] => ) ) ) [34] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 164 [title] => EBRPD Trail improvements at Lake Chabot [number] => 50620 [description] => The bicycle and hiking trail at Lake Chabot Regional park is one of the East Bay Regional Park District’s most popular trails. The steep terrain of the East Shore Trail along the reservoir rim had caused many erosion and stability problems over the years. As part of the District’s long-term maintenance program, Cal Engineering & Geology provided geotechnical consulting and design services for the repair of several landslide prone areas along the trail. Services provided by CE&G included landslide and pavement distress mapping, completion of a geotechnical investigation report, and preparation of landslide stabilization plans. The project was completed successfully on time and within budget. The East Shore Trail is once again a favorite of hikers, runners, and cyclists. [lat] => 37.726872958168933 [lng] => -122.107801437377930 [street] => Lake Chabot Trail [city] => Castro Valley [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 146 [projectID] => 164 [filename] => Lake Chabot Web.JPG [title] => [description] => ) ) ) [35] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 733 [title] => Hennessey Creek Improvements [number] => 80010 [description] => Following complete sediment infilling of an existing underground diversion facility, a bypass was needed to re-establish flood control capabilities on Hennessey Creek in Fairfield, California. On behalf of the project’s civil design team, Cal Engineering & Geology performed a geotechnical investigation and provided design parameters and recommendations for the new concrete lined bypass channel and reinforced concrete box culvert. The investigation included geologic research, exploratory drilling, and laboratory testing. CE&G designed portions of the reinforced concrete channel walls, a concrete drainage inlet for normal flow conditions, and a 40 foot long reinforced concrete box culvert for flood conditions. To reduce the potential for increased loading on an existing large diameter high pressure water main, a pile-supported foundation system was used to support the culvert so that it could bridge over the water pipe. The culvert was designed to reduce the potential of surcharge loading of the water pipe during and after construction. [lat] => 38.229963421583740 [lng] => -122.150362730026250 [street] => Reservoir Lane [city] => Fairfield [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 205 [projectID] => 733 [filename] => Photo.jpg [title] => [description] => ) ) ) [36] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 514 [title] => Lafayette Library and Learning Center [number] => 30400 [description] => Cal Engineering & Geology was the geotechnical consultant for the design and construction of the $30 million dollar State of The Art facility in Lafayette, CA. Geotechnical services included completion of a geotechnical report for design of the new 40,000 square foot facility. The facility includes an underground garage, a three level library and community center building, amphitheatre, and outdoor garden. The services provided by CE&G included extensive collaboration with the project architect and landscape architect during both design and construction. [lat] => 37.889350630198905 [lng] => -122.118358612060550 [street] => Moraga Road [city] => Lafayette [state] => CA [categoryID] => 2 [level] => 2 [thumbID] => 182 [filename] => Lafayette Library Web Photo.png [fileTitle] => [fileDescription] => [thumb] => Lafayette Library Web Photo.jpg [files] => Array ( [0] => Array ( [id] => 182 [projectID] => 514 [filename] => Lafayette Library Web Photo.png [title] => [description] => ) ) ) [37] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 813 [title] => Laguna Creek Culvert Repair [number] => 71420 [description] => Cal Engineering and Geology conducted a geotechnical investigation and prepared plans, specifications, and estimates (PS&E) for repair of a 9 foot diameter culvert inlet and outlet structures after the structures failed during a winter storm. The plans for the federally funded project consisted of removing and replacing the existing headwall, endwall, and wingwalls to their pre-disaster condition and the incorporation of rock slope protection placed on the creek bed to reduce the potential for undermining of the new structures. CE&G also proposed a conceptual green alternative for the outlet structures in which the failed structures would be replaced with a rock slope protection embankment vegetated with willow pole cuttings above a splash pool. This alternative provided habitat for the California Red Legged Frog, and reduced the conceptual cost of the downstream repair to approximately 35% of the cost to restore the site to the pre-disaster condition. The alternative is currently being reviewed by Office of Emergency Services (OES) and Federal Emergency Management Agency (FEMA). [lat] => 37.853383859915810 [lng] => -122.126874625682830 [street] => 2100 Donald Drive [city] => Moraga [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 207 [projectID] => 813 [filename] => Photo.jpg [title] => [description] => ) ) ) [38] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 415 [title] => Orinda City Offices [number] => 31210 [description] => Cal Engineering & Geology provided geotechnical services for planning, design, and construction of the City Offices Facility for the City of Orinda. The new (2007) facilities included a two story, 15,000 building situated on a hillside overlooking downtown Orinda. The primary geotechnical challenge at the site included highly localized variations in subsurface soil conditions. As a result the project included heavy involvement with project architects and structural engineers regarding the design and construction of the most cost -effective foundation system. The selected foundation system utilized a hybrid of piles, spread footings, and retaining wall all supported on bedrock. The completed project was the first public building in Contra Costa County to attain LEED certification. [lat] => 37.882170112647351 [lng] => -122.187366485595703 [street] => 22 Orinda Way [city] => Orinda [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 165 [projectID] => 415 [filename] => Orinda City Offices Web Photo.bmp [title] => [description] => ) ) ) [39] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 647 [title] => Pavement Rehabilitation [number] => 80220 [description] => Cal Engineering & Geology completed geologic and geotechnical subsurface exploration and pavement design for pavement rehabilitation projects along Velarde Street, Peacock Avenue, and Elsie Avenue in Mountain View, California. The proposed project consisted of reconstruction of the existing curbs, gutters and asphalt pavement along segments of the three streets. Following completion of the exploratory drilling and laboratory testing program, geotechnical design parameters were developed for the proposed improvements, and pavement structural sections were designed. CE&G presented four design alternatives to mitigate the high plasticity clay subgrade without lime treatment and provided specifications for the desired alternative. [lat] => 37.404903298640260 [lng] => -122.087137699127200 [street] => Velarde Street [city] => Mountain View [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 212 [projectID] => 647 [filename] => Photo.jpg [title] => [description] => ) ) ) [40] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 719 [title] => Peralta Creek Improvements [number] => 71160 [description] => Cal Engineering & Geology performed a geotechnical investigation and designed creek bank retaining systems as part of an Alameda County Flood Control District led project to improve the hydraulic capacity and habitat of a section of Peralta Creek in Oakland, California. The site presented numerous challenges due to accessibility, space limitations, and unknowns regarding existing improvements. Work included exploratory borings and laboratory testing, preparation of a geotechnical design memorandum, design of new variable batter soil nail retaining walls, cantilever reinforced masonry retaining walls, and stabilization of existing un-engineered retaining walls. Plans, specifications, and estimates for the various retaining structures were prepared by CE&G and provided to the District for inclusion in the overall PS&E package. Due to the unknown configuration of many of the existing facilities at the site, additional design work was completed during construction based on the conditions encountered. [lat] => 37.782451238963660 [lng] => -122.219080924987800 [street] => Foothill Boulevard [city] => Oakland [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 166 [projectID] => 719 [filename] => Peralta Creek Web Photo.JPG [title] => [description] => ) ) ) [41] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 807 [title] => Power Avenue and California Avenue [number] => 90080 [description] => Under severe time constraints, Cal Engineering & Geology prepared a geotechnical report for the overlay and reconstruction of portions of Power Avenue and California Avenue in Pittsburg, California. The client requested that the geotechnical report be provided within four weeks of the initial phone call. The purpose of this project was to conduct a subsurface exploration and provide pavement design recommendations for design and construction of the fast-tracked pavement rehabilitation project. Soils testing and analyses was performed on selected samples recovered from the borings. The testing included determination of moisture content and density, Atterberg Limits, compaction curves, and Caltrans R-Value testing. Our in-house laboratory provided test results within three days of completion of the subsurface investigation. Engineering analyses of the soil samples and boring logs were used to develop geotechnical design recommendations for the preparation and compaction of the pavement subgrade, mitigation options for high plasticity clay subgrade soils, and recommendations for minor cut and fill earthwork operations. The results of our geologic research, exploratory borings, laboratory testing, and engineering analyses was summarized in the geotechnical report. The project was completed on budget within the requested four week time frame. [lat] => 38.020373460133186 [lng] => -121.902108192443850 [street] => Power Avenue and California Avenue [city] => Pittsburg [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 191 [projectID] => 807 [filename] => Power Avenue and California Avenue Web Photo.JPG [title] => [description] => ) ) ) [42] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 311 [title] => Studio One Art Center [number] => 41250 [description] => Cal Engineering and Geology completed a geotechnical investigation and report for the seismic renovation of the Studio One Art Center in the Temescal District in Oakland, California. The project involved seismic and accessibility retrofitting of a historic unreinforced masonry building constructed in 1894. The work included completion of a subsurface investigation, preparation of a geotechnical report, coordination with the project architect and structural engineer, and providing special inspection services during construction. The geotechnical work was completed in less than three weeks after receiving a notice to proceed from the City. [lat] => 37.833107102332498 [lng] => -122.257318496704102 [street] => 365 45th Street [city] => Oakland [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 177 [projectID] => 311 [filename] => Studio One Web Photo.jpg [title] => [description] => ) ) ) [43] => Array ( [category] => Geotechnical Investigation [icon] => yellow [id] => 810 [title] => West Grand Avenue Sewer Relief [number] => 40530 [description] => Cal Engineering & Geology was retained to perform a geotechnical investigation and report for a new 60 inch diameter, 6,300 foot long gravity sewer line, with associated junction structures and access holes beneath West Grand Avenue between Wood Street and Martin Luther King Jr. Way in west Oakland, California. The scope of work included the review of geotechnical and geologic maps of the area, evaluating historical maps and reports to determine the approximate limits of old fill pushed into the bay in the early 20th century, drilling and sampling a total of 17 borings to depths between 18.5 and 45 feet below finished grade, and preparation of a report with recommendations for design of the sewer and for temporary shoring. Based upon both our historical evaluation of the site history and the subsurface borings, CE&G determined that the ground conditions along the line varied substantially and provided two sets of recommendations. CE&G also tied the recommendations to the project stationing so that the appropriate recommendations would be used for design of the shoring and final design of the sewer relief line. CE&G completed our investigation and report in 2004 and then responded to minor comments and provided supplemental recommendations in 2006 during final design of the project. [lat] => 37.818751355571830 [lng] => -122.293217182159420 [street] => W. Grand Avenue [city] => Oakland [state] => CA [categoryID] => 2 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 194 [projectID] => 810 [filename] => West Grand Avenue Web Photo.png [title] => [description] => ) ) ) [44] => Array ( [category] => Landslide Repair [icon] => blue [id] => 496 [title] => Calaveras Road Landslide Repair [number] => 990840 [description] => Cal Engineering & Geology performed a geotechnical investigation for the reconstruction of three landslide damaged stretches of Calaveras Road for the Alameda County Public Works Agency. CE&G personnel completed geologic mapping, subsurface exploration with conventional drilling and sampling techniques, prepared a geotechnical data report and project report which provided repair alternatives and recommendations for stabilization of the slope. CE&G prepared plans, specifications, and engineer’s estimates for construction of two geogrid reinforced soil geocell faced embankments supported on cast-in-drilled-hole (CIDH) piles. The hydrid structure with CIDH piles was used to support the embankments in order to limit the size of the excavation and encroachment into the adjacent creek channel. Geocell facing for the geogrid reinforced embankment was incorporated in order to create a living plantable face to a near vertical structure. The project was constructed in 1999-2000 on time and within the engineer’s estimate. [lat] => 37.555873327772180 [lng] => -121.859321594238280 [street] => Calaveras Road [city] => Sunol [state] => CA [categoryID] => 6 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 140 [projectID] => 496 [filename] => Calaveras Web Photo.JPG [title] => [description] => ) ) ) [45] => Array ( [category] => Landslide Repair [icon] => blue [id] => 112 [title] => McKillop Road Embankment Stabilization [number] => 61250 [description] => In 2006 a large catastrophic landslide destroyed one home and threatened to cut off the only public access to 12 others. To address the emergency situation, Cal Engineering & Geology was retained by the City of Oakland to complete a geologic and geotechnical study, prepare plans, specifications, and engineer’s estimate to stabilize the roadway. The initial scope of work included historical research, geologic mapping, and monitoring of crack gauges and other points of measurement near the headscarp. Preliminary geologic mapping was completed to assess the boundaries and direction of movement. Different repair alternatives to protect the public facilities and the public right-of-way were developed and evaluated. CE&G completed design of a drilled pile and tieback road embankment stabilization system. Due to subsequent right of entry issues on the private property, modifications were made which allowed for construction activity limited only to the City's right of way. A two-wall system was used in which the first wall with tieback anchors was constructed below the center of the roadway and a second wall connected with tie rods at the edge of the right of way. During construction, CE&G provided engineering observation, inspection, and testing services. Changes were made to the design during construction based on conditions encountered after logging the deep stabilization piles. The Federal Emergency Management Agency (FEMA) funded project was completed at a cost of approximately $3 million and was an award winning project. [lat] => 37.794898033963257 [lng] => -122.221580743789673 [street] => McKillop Road [city] => Oakland [state] => CA [categoryID] => 6 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 159 [projectID] => 112 [filename] => McKillop Web Photo.jpg [title] => [description] => ) ) ) [46] => Array ( [category] => Landslide Repair [icon] => blue [id] => 814 [title] => Mines Road Emergency Landslide Repair [number] => 985460 [description] => Sudden re-activation of a large landslide along a remote rural road providing the only access to 12 residential properties required that the portion of the landslide affecting the road be stabilized immediately. On an emergency basis Cal Engineering & Geology worked together with Alameda County Public Works Agency engineers to develop an emergency stabilization. Within two weeks, a geotechnical investigation had been completed and plans were prepared for a tie-back soldier beam and lagging retaining wall which would isolate the road from the landslide. An emergency contractor was selected by the County and worked together with CE&G and the County engineers to complete stabilization measures within about six weeks. [lat] => 37.527153617233780 [lng] => -121.555652618408200 [street] => Mines Road [city] => Alameda County [state] => CA [categoryID] => 6 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 209 [projectID] => 814 [filename] => Photo.JPG [title] => [description] => ) ) ) [47] => Array ( [category] => Landslide Repair [icon] => blue [id] => 815 [title] => Nebreda Landslide Repair [number] => 62150 [description] => In April 2006 a landslide impacted four properties in an unincorporated area of San Mateo County. Landslide debris displaced into the rear portions of the lower two homes, rendering the houses unsafe for occupancy. As part of the remedial effort, CE&G investigated the slide mass by performing subsurface exploration. This data and subsequent laboratory testing enabled CE&G to design a repair consisting of the replacement of the slide mass with engineered and drained fill. Since the original slope had an inclination of 1.6 (horizontal):1(vertical), it was necessary to incorporate three retaining walls in to the repair. The walls, which consisted of pressure-treated wood lagging supported by steel I-beams set in drilled concrete piers, allowed the finished slope to conform to the existing topography east and west of the repair. Concrete-lined drainage ditches were incorporated at the top of the walls in order to control surface runoff. At the conclusion of the grading the hillside was hydro-seeded and covered with erosion-control matting. The most unique challenge on the project was the discharge of water collected by the repair’s wall drains and surface ditches. CE&G designed a percolation catch basin to maintain flow on site during low flow conditions, with an overflow system that discharges into the street gutter during peak flow. [lat] => 37.691665373998944 [lng] => -122.482924461364750 [street] => Nimitz Drive [city] => Colma [state] => CA [categoryID] => 6 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 210 [projectID] => 815 [filename] => Nebrida Photo.png [title] => [description] => ) ) ) [48] => Array ( [category] => Landslide Repair [icon] => blue [id] => 247 [title] => Norton-Rettig Landslide [number] => 40470 [description] => Cal Engineering & Geology completed a geotechnical investigation and designed the repair of a complex landslide effecting six hillside residential properties in Oakland, California. The project was politically sensitive and required extensive coordination and city review. Substantial project constraints included: right-of-way, hydrology, trees, creek, and environmental groups. The major elements of the repair were: construction of piers, temporary tiebacks to allow excavation of the landslide debris; the installation of subsurface drainage; and geogrid reinforced walls and slopes to stabilize the hillside. CE&G worked with the contractor and city to develop a project staging scheme that would reduce the need to off-haul soil and thereby minimize the disturbance to the neighborhood and damage to city streets. The project included about 20,000 cubic yards of excavation and geogrid reinforced fill placement, construction of about 600 linear feet of shoring piles with temporary tieback, and construction of approximately 3000 square feet of modular block retaining wall. The project construction cost was $1.3 million. [lat] => 37.801379202895617 [lng] => -122.195311188697815 [street] => 4165, 4201, 4168, 4200, and 4206 Norton Avenue [city] => Oakland [state] => CA [categoryID] => 6 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 164 [projectID] => 247 [filename] => Norton Rettig Web Photo.jpg [title] => [description] => ) ) ) [49] => Array ( [category] => Landslide Repair [icon] => blue [id] => 530 [title] => Zander Drive Landslide Study [number] => 61430 [description] => Zander Drive Landslide is a large historic slide in Orinda, California that extends approximately 1,000 feet west of Zander Drive to San Pablo Creek. After several episodes of slide reactivation in the 1960s, 1980s, and 1998, the City of Orinda took possession of two private properties located within the headscarp area of the slide. In 2006, Cal Engineering & Geology was retained by the City to study the upper portions of the landslide in detail and determine the feasibility of constructing engineering improvements to stabilize the landslide CE&G evaluated the previous geotechnical work completed regarding the landslide over the past 40 years and completed an extensive subsurface exploration, instrumentation, monitoring, and testing program to characterization the landslide. Several potential stabilization concepts and estimates were developed, evaluated, and presented to the City. Complete stabilization of the 100+ foot deep landslide proved to be unfeasable. In lieu of complete stabilization, the City choose CE&G’s design and implemented affordable headscarp drainage improvements and a long term maintenance program. [lat] => 37.864774778039610 [lng] => -122.145835161209100 [street] => Zander Drive [city] => Orinda [state] => CA [categoryID] => 6 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 179 [projectID] => 530 [filename] => Zander Drive Web Photo.JPG [title] => [description] => ) ) ) [50] => Array ( [category] => Reinforced Slope [icon] => pink [id] => 438 [title] => Cowell Road Embankment Stabilization [number] => 20100 [description] => Cal Engineering & Geology was retained by the City of Concord in 2002 to evaluate the potential for stabilizing a section of Cowell Road where a previously repaired landslide had reactivated. Previous consultants had recommended an earthwork repair which would have required the off-haul of over 50,000 cubic yards of soil and import of a similar quantity to rebuild the failing embankment. The estimated cost of the removal and replace repair was well over $1 million. After reviewing the available data developed by others, CE&G recommended that a buried tieback retaining structure be utilized to globally stabilize the site and that the upper 15 feet be rebuilt as a geogrid reinforced embankment. The proposed repair had the dual benefit of being more economical for the city and less disruptive to traffic due to a smaller project footprint. CE&G provided part-time observation and testing services and engineering assistance to the City’s resident engineer. The cost of the repair was approximately $700,000 and was completed in 2004. [lat] => 37.947649453550632 [lng] => -121.992273330688477 [street] => Cowell Road [city] => Concord [state] => CA [categoryID] => 3 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 141 [projectID] => 438 [filename] => Cowell Road Web Picture.png [title] => [description] => ) ) ) [51] => Array ( [category] => Reinforced Slope [icon] => pink [id] => 498 [title] => Moraga Way Soil Nail Wall [number] => 988360 [description] => After 30 years of service, a concrete faced cutslope along a main road through Orinda, California was failing and was in jeopardy of collapsing onto the road. Community concerns regarding the appearance of the existing concrete faced structure required that any replacement be aesthetically pleasing as well as structurally sound. CE&G investigated the condition of the structure and recommended that the slope be stabilized by constructing a new sculpted and textured concrete faced soil nail retaining wall. Once the design was completed, the conflicting aesthetics requirements of the community and the mandated low bid contractor selection process posed a significant challenge. By working closely with the City’s Architectural Review Board, CE&G was able to develop carefully worded specifications which resulted in an on budget project, which with a finished appearance, was praised by the community. [lat] => 37.853169958949780 [lng] => -122.152175903320310 [street] => Moraga Way [city] => Orinda [state] => CA [categoryID] => 3 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 156 [projectID] => 498 [filename] => Moraga Way Cutslope Web Photo.JPG [title] => [description] => ) ) ) [52] => Array ( [category] => Reinforced Slope [icon] => pink [id] => 265 [title] => Reinforced Steep Embankment LA Unified HS No. 10 [number] => 40690 [description] => From 1998-2007, Los Angeles Unified School District undertook one of the most aggressive school building programs in history. One of the most challenging parts of the program was to build a new high school in Downtown LA as part of a value-engineering effort by Clark Construction. Cal Engineering & Geology prepared plans and specifications for construction of a 70 to 100 foot tall geosynthetic reinforced slope as part of the site grading required for development and construction of High School #10. The reinforced slope was completed in lieu of several large retaining walls. [lat] => 34.057992707863583 [lng] => -118.262414932250977 [street] => 322 Lucas Ave [city] => Los Angeles [state] => CA [categoryID] => 3 [level] => 2 [thumbID] => 169 [filename] => LA Unified HS Web Photo.jpg [fileTitle] => [fileDescription] => [thumb] => LA Unified HS Web Photo.jpg [files] => Array ( [0] => Array ( [id] => 169 [projectID] => 265 [filename] => LA Unified HS Web Photo.jpg [title] => [description] => ) ) ) [53] => Array ( [category] => Reinforced Slope [icon] => pink [id] => 805 [title] => Slope Stabilization & Road Repair [number] => 60990 [description] => Cal Engineering and Geology provided geotechnical investigation, design, construction observation & testing, and administration services for the reconstruction of a portion of Dwight Place located in the hills above the University of California in Berkeley, California. An incipient slope failure impacted a 10-foot wide by 75-foot long portion of the roadway. The slope below the roadway was stabilized by installing a row of reinforced concrete stabilization piles along the downslope edge of the roadway. The affected roadway and subgrade were removed and replaced with a new asphalt concrete section. The project was completed on time and within budget. [lat] => 37.863165459700790 [lng] => -122.272725105285640 [street] => Dwight Way [city] => Oakland [state] => CA [categoryID] => 3 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 188 [projectID] => 805 [filename] => Dwight Place Web Photo.png [title] => [description] => ) ) ) [54] => Array ( [category] => Retaining Wall [icon] => white [id] => 746 [title] => Camino Sobrante Retaining Wall [number] => 2480 [description] => In 2002, Cal Engineering and Geology investigated a failing retaining wall that supported a heavily trafficked residential street adjacent to the Orinda Country Club in Orinda, California. The purpose of this investigation was to determine and document the surface and subsurface geotechnical conditions at the site of a deteriorated, 18 foot high, timber retaining wall adjacent to Camino Sobrante, northeast of the intersection of Camino Sobrante. CE&G prepared plans, technical specifications, and estimates using modified Caltrans format, and provided bidding assistance and construction observation and testing. [lat] => 37.892585021379816 [lng] => -122.189576625823970 [street] => Camino Sobrante [city] => Orinda [state] => CA [categoryID] => 4 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 185 [projectID] => 746 [filename] => Camino Sobrante Web Photo.JPG [title] => [description] => ) ) ) [55] => Array ( [category] => Retaining Wall [icon] => white [id] => 392 [title] => El Morro Elementary School [number] => 30940 [description] => Cal Engineering & Geology completed a review and evaluation of distressed Allan Block segmental retaining walls constructed as part of site improvements to El Morro Elementary School in Laguna Beach, California. The purpose was to develop opinions regarding the cause(s) of the observed distress of the walls, and to report our findings. Our work also included the following: discussions with Geotechnical Professionals, Inc. (GPI), and the school district regarding the project and the current distress to the retaining walls and appurtenances; review of the geotechnical reports prepared for the project, review of the relevant retaining wall design and construction documents (reports, calculations, and plans) included in the project manual; review of the original design calculations and evaluation of the design using a non-proprietary segmental retaining wall design program; review of survey monitoring data for the retaining wall; review of a report regarding the retaining wall distress; and development of opinions regarding the potential for repairing the retaining walls in place. [lat] => 33.563872796977044 [lng] => -117.824270725250244 [street] => 8681 North Coast Hwy [city] => Laguna Beach [state] => CA [categoryID] => 4 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 202 [projectID] => 392 [filename] => El Morro School 2.jpg [title] => [description] => ) ) ) [56] => Array ( [category] => Retaining Wall [icon] => white [id] => 500 [title] => Vasco Road Realignment [number] => 1860 [description] => For years, a dangerous segment plagued the motorists who used Vasco Road, a formerly rural road that serves as a major commute route for east Contra Costa County. Cal Engineering & Geology was retained by the Alameda County Public Works Agency to provide geotechnical consultation and design services for the realignment and safety improvements of approximately 2 km of Vasco Road just north of Livermore and south of the County line. 3 km of 30 inch diameter PG&E gas lines were also rerouted as part of the project. The geotechnical aspects of the project included excavations up to 30 m high through highly sheared and faulted bedrock and construction of embankments up to 25 m. At the request of the County, CE&G also designed and prepared the plans for the large cut slope, 12 m tall segmental block retaining wall, and several other temporary retaining structures. Design services also included preparation of the specifications for the earthwork, all retaining structures, and hydroaugers. CE&G provided engineering and construction observations and testing in support of the ACPWA Construction Division throughout the construction of a required PG&E relocation project ($4 million construction), and during the construction of the actual road project ($12 million). [lat] => 37.809783953010970 [lng] => -121.668434143066400 [street] => Vasco Road [city] => Livermore [state] => CA [categoryID] => 4 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 167 [projectID] => 500 [filename] => Vasco Road Web Photo.JPG [title] => [description] => ) ) ) [57] => Array ( [category] => Road Embankment Stabilization [icon] => black [id] => 812 [title] => Alcosta Boulevard Pavement [number] => 90630 [description] => Cal Engineering & Geology was retained by the City of San Ramon to provide geotechnical engineering services for the investigation of the pavement distress located in the northbound lanes of Alcosta Boulevard between Norris Canyon Road and Bollinger Canyon Road in San Ramon, California. The road had experienced pavement distress which could not be remedied by normal maintenance. The purposes of our work were to develop surface and subsurface information regarding the geologic and geotechnical conditions within the study area in order to develop opinions of the cause of the pavement distress and to develop recommendations to solve the problem. CE&G reviewed historic plans, memorandums, and reports provided by the City, and drilled six exploratory borings to depths of 10-15 feet. Laboratory testing was performed on selected samples recovered from the exploratory test borings. The pavement distress was determined to be a result of a combination of factors which included poor subgrade soils conditions, poorly placed asphalt concrete, poorly compacted fill, and the roadway and hillside geometry. CE&G evaluated several methods of addressing the poor subgrade soils and provided a comparison of the methods in our report to the City. The report documented our review of documents provided by the City and published geologic maps, subsurface investigation, findings, and recommendations. [lat] => 37.776786744485214 [lng] => -121.961288452148440 [street] => Alcosta Boulevard [city] => San Ramon [state] => CA [categoryID] => 9 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 196 [projectID] => 812 [filename] => Photo.jpg [title] => [description] => ) ) ) [58] => Array ( [category] => Road Embankment Stabilization [icon] => black [id] => 25 [title] => Bailey Road Stabilization [number] => 41270 [description] => CE&G completed a geotechnical investigation and developed plans and specifications for stabilizing the undermined and failing embankment and natural slope below the north bound lane of Bailey Road adjacent to Lawlor Creek in Pittsburg, California. The stabilization measures included construction of a steel beam and wood lagging retaining wall with tieback anchors. Due to overhead power line constraints, each cast-in-drilled-hole (CIDH) pile was constructed in two shorter pieces with a steel spiral cage in the lower portion, and the steel beam in the upper portion. [lat] => 38.004815739471820 [lng] => -121.943644881248470 [street] => Bailey Road [city] => Pittsburg [state] => CA [categoryID] => 9 [level] => 2 [thumbID] => 197 [filename] => Photo.jpg [fileTitle] => [fileDescription] => [thumb] => Photo.jpg [files] => Array ( [0] => Array ( [id] => 197 [projectID] => 25 [filename] => Photo.jpg [title] => [description] => ) ) ) [59] => Array ( [category] => Road Embankment Stabilization [icon] => black [id] => 643 [title] => Skyline Road Slope Stabilization [number] => 80000 [description] => Cal Engineering & Geology completed a geotechnical investigation and prepared a geotechnical report and flood wall design on behalf of the Alameda County Flood Control and Water Conservation District for the improvement of an existing earth lined flood control channel in west Hayward, California. This original scope of work for the project was completed within a tight five week schedule from notice to proceed through completion of the published report. The project included investigations and design assistance for widening and stabilization of 2,500 linear feet of an existing earth lined flood control channel and levee. The project included analysis and design of 2 to 3 foot high retaining/flood walls and stability assessment of proposed channel and levee modifications. After issuance of the original report, CE&G was asked to provide additional services relating to a re-design of the originally conceived project. We provided design assistance and completed design calculations for a sheetpile flood wall to be constructed as part of the improvements. The project was completed on time and within budget. [lat] => 37.842427520264465 [lng] => -122.197880744934080 [street] => Skyline Boulevard [city] => Oakland [state] => CA [categoryID] => 9 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 174 [projectID] => 643 [filename] => Skyline Web Photo.png [title] => [description] => ) ) ) [60] => Array ( [category] => Road Embankment Stabilization [icon] => black [id] => 791 [title] => St. Mary's Road Embankment Stabilization [number] => 61220 [description] => Cal Engineering & Geology completed a geotechnical investigation, design, and construction administration services for a 6 ft tall soldier pile and wood lagging retaining wall and geogrid-reinforced embankment to stabilize the slope below St. Mary’s Road in Lafayette, California. Construction administration services included performing daily site visits, writing daily reports, and monitoring contract working days. The Federal Emergency Management Agency (FEMA) funded project also required conducting random interviews with contractor’s employees and confirming that federal wage standards were being followed. [lat] => 37.901847125113870 [lng] => -122.140674591064450 [street] => Palo Alto Drive [city] => Lafayette [state] => CA [categoryID] => 9 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 175 [projectID] => 791 [filename] => St. Marys Road Web Photo.png [title] => [description] => ) ) ) [61] => Array ( [category] => Road Embankment Stabilization [icon] => black [id] => 484 [title] => Stanley Blvd Emergency Repair [number] => 985440 [description] => The Stanley Boulevard Embankment Restoration and Roadway Reconstruction Project was conceived, designed, permitted, and constructed within 300 days of the catastrophic failure which closed two eastbound lanes in February 1998. The Alameda County Public Works Agency, Cal Engineering & Geology, and Redgwick Construction teamed together to expedite the re-opening of the heavily trafficked thoroughfare. Reconstructing the failed 90 meter long section of the steep 0.6H:1.0V (Horizontal: Vertical), 15 meter high embankment was accomplished by constructing a geocell faced, geogrid reinforced embankment. The major constraints of the project included visual and environmental concerns with the adjoining lake at the East Bay Regional Park District=s Shadow Cliffs Regional Park and difficulty with embankment construction during inclement weather. Plantable tan geocell facing units with variable slope inclinations and selected plantings were to match the appearance of, and to conform, to the adjacent slope. Free-draining granular embankment fill available from the nearby rock quarries was specified to facilitate fill placement during inclement weather. Extensive erosion and sediment control measures were implemented and cooperation with the California Department of Fish and Game assured protection of the fragile lake ecosystem during construction. [lat] => 37.672773025449239 [lng] => -121.834087371826172 [street] => 1544 Stanley Boulevard [city] => Alameda County [state] => CA [categoryID] => 9 [level] => 1 [thumbID] => 0 [filename] => [fileTitle] => [fileDescription] => [thumb] => .jpg [files] => Array ( [0] => Array ( [id] => 176 [projectID] => 484 [filename] => Stanley Blvd. Web Photo.jpg [title] => [description] => ) ) ) )