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Marcus J. Galvan, PE Executive Vice President - Geotechnical Engineer Years of Experience: 27 Industry Tenure: 2015 to Present Corsair Consulting LLC Principal Owner 1998 to 2015 TxDOT, Bridge Division Geotechnical Branch, Branch Manager 20112015 1996 to 1998 Rodriguez Engineering Laboratories, Laboratory Engineer 1995 to 1996 US Army Corps of Engineers, Geoenvironmental Branch, Civil Engineer Expertise: Mr. Galvan has more than 27 years of experience covering a broad range of structural, materials, geotechnical engineering and construction issues. For 16 of his 27 years in industry, Mr. Galvan worked in the TxDOT Geotechnical Branch of the Bridge Division. Here he supervised and managed personnel engaged in statewide geotechnical support activities. These include the design of bridge foundations, retaining walls, bank and stream scour countermeasures, evaluation and remediation of slope stability issues, forensic evaluations, participation in Value Engineering studies, oversight of highway research projects, PS and E review, development and maintenance of Statewide Bridge Geotechnical Standards and Specifications, planning and execution of geotechnical investigations and construction support for geotechnical structures on Texas highway projects. Select Projects / Experience: Mr. Galvan was the Geotechnical Branch Manager for the TxDOT Bridge Division. While leading this TxDOT office of primary responsibility for structurally related geotechnical designs Mr. Galvan led the branch in: 1988 to 1995 TxDOT, Bridge Division, Inspection Branch, Bridge Inspection Engineer Registrations: Texas Education: Bachelor of Science, Civil Engineering, University of Texas, Austin, Texas Master of Engineering, Civil Engineering Geotechnical, University of Texas, Austin, Texas The development and updates of TxDOT Bridge Design Standards including the RW(MSE) and RW(MSE)DD standards Updates to the State Geotechnical Manual Updates and revisions to the TxDOT Standard Specifications including the recent 2014 specification rewrite of the 400 series specifications Development and revisions of special specifications including special specifications for Micropiling, Thermal Integrity Testing of Drilled Shafts, High Strain Dynamic Testing of Foundation Elements and Jet Grouting. Oversight in the selection and execution of statewide geotechnical drilling contracts. This activity required development of geotechnical investigation and testing plans, analysis, design recommendations and turn-key design details. The designed and supervision of the design of 100’s of bridge foundations throughout the State of Texas. These foundations varied in complexity and included drilled shafts, driven piling and spread footings. Marcus J. Galvan, PE Executive Vice President - Geotechnical Engineer Certifications: TXDOT Precertification - 14.1.1-Soil Exploration - 14.2.1-Geotechnical Testing - 14.3.1-Transportation Foundation Studies - 14.4.1-Building Foundation Studies Professional Affiliations: American Society of Civil Engineers International Association of Foundation Drilling, ADSC The design and supervision of the design of 100’s of retaining walls throughout the State of Texas. Wall types include soil nail, rock nail, tie back, sheet pile, drilled shaft, cast in place and mechanically stabilized earth. Oversight the State’s Scour program developing policy and guidance regarding the analysis of proposed and existing structures including structures with unknown foundations. Development of research problem statements and supervision of research projects. Research projects included MSE walls, soil nail walls, rock nail walls, drilled shafts and slope stability issues. Specific Project Experience includes: IH 35 Salado to Hillsboro, Waco District: Mr. Galvan was the Geotechnical Engineer of record for the reconstruction of IH 35. He provided oversight in the geotechnical investigations and geotechnical design activities for the 100 mile plus corridor. Mr. Galvan designed numerous soil nail, rock nail and MSE walls (both temporary and permanent) as well as bridge foundations for many of the bridge structures on this project. Mr. Galvan worked to develop phasing plans as determine retaining wall requirements for construction phases. Mr. Galvan also assisted in developing underpinning details using micro piling for several structures due to phasing requirements. Throughout the duration of construction, Mr. Galvan provided construction support for geotechnical related questions or issues. SH 71 at Riverside Drive, Austin District: Mr. Galvan was the designer of record for tie back walls used on this project. The tie back walls were in excess of 40’ in height and required unique design details. Mr. Galvan also provided a redesign of detention pond retaining walls due to issues related to original wall instability. The redesign included soil nail and tie back walls. Use of these walls simplified construction and increased capacity of the pond. Throughout the duration of construction, Mr. Galvan provided construction support for geotechnical related questions or issues. LP 375 at Zaragosa Drive, El Paso District: Mr. Galvan was the designer of record for retaining walls and bridge foundations used on this project. MSE, concrete block and Soil Nail walls were used on this project. Existing concrete block walls created unique challenges with the construction of both bridge foundation elements and the construction of the soil nail walls. These challenges required special phasing and wall construction details. Marcus J. Galvan, PE Executive Vice President - Geotechnical Engineer LP 375 at US 54, El Paso District: Mr. Galvan was the designer of record for bridge foundations and provided design oversight for tie back, soil nail and MSE walls on the project. The proximity of the US 54 bridge to the tie back walls required that spread footings used to support the existing US 54 bridge be underpinned with micro piling. Mr. Galvan designed the footing underpinning details and provided construction phasing details for underpinning and wall construction. The problematic nature of the soil profile required continual construction support for geotechnical related questions or issues. US 183 at US 290, Austin District: Mr. Galvan was the designer of record for the tie back/soil nail retaining walls used on this project. The design provided unique challenges due to the existing US 290 overpass structures, proposed direct connector footings and proposed drainage features. These elements required numerous transitions between wall types which included tie back, soil nail and drilled shaft shoring. Throughout the duration of construction, Mr. Galvan provided construction support for geotechnical related questions or issues. MSE Wall Rehabilitation, Various TxDOT Districts: Mr. Galvan has investigated and provided repair details for several high profile MSE walls due to issues related to loss of material or overall stability concerns. These walls included: IH 10 at Dowlen Road, Beaumont District, site investigation and monitoring concluded walls exhibited significant movement and stability concerns. Soldier pile/tie back details were developed to remediate the walls. Construction oversight was provided throughout the duration of construction. US 281 at Brook Hollow Drive, San Antonio District, site investigation and monitoring concluded walls exhibited significant movement and stability concerns. Soldier pile/tie back details were developed to remediate the walls. Construction oversight was provided throughout the duration of construction. US 290 at Westgate Boulevard, Austin District, monitoring of these walls identified a significant loss of backfill material. The repair for these walls included the use of tied back solider piling and a compaction grouting program. A total of 200 yards of compaction grout was used. Construction oversight was provided throughout the duration of construction. Bridge Foundation Rehabilitation, Various TxDOT Districts: Mr. Galvan has investigated and provided repair details for several bridge Marcus J. Galvan, PE Executive Vice President - Geotechnical Engineer structures due to issues related to loss of foundation support or overall stability concerns. These bridges included: Loop 256 at Wells Creek, Tyler District, drilled shafts on 3 bents were not taken to the proper founding strata. The bridge foundations settled upon placement of the bridge deck. Underpinning details were developed utilizing micro piling and footings to establish adequate support for the structure. IH 30 at Draw, Paris District, upon completion of the bridge the bridge settled under live traffic. Underpinning details were developed utilizing micro piling and footings to establish adequate support for the structure. The structure was repaired while under traffic. FM 99 at Onion Creek, Dallas District, due to continued erosion and down cutting of the channel a reduced embedment of drilled shaft foundation elements was identified. Micro pile underpinning details were developed to adequately support the structure until the bridge could be replaced. Channel Erosion Rehabilitation/Restoration, Various TxDOT Districts, Mr. Galvan has investigated and provided rehabilitation and restoration details for scour and erosion issues for bridge and related structures. Projects included: IH 20 at Salt Draw, Odessa District, continued erosion under the Salt Draw structure caused undermining of an existing gabion wall. Undermining resulted in failure of the wall and collapse of portions of the east bound structure. Mr. Galvan provided emergency response, an assessment of the west bound structure and recommendations to temporarily rehabilitate the west bound structure to keep it in service. Geotechnical borings were acquired and plans developed to replace portions of the eastbound structure that had collapsed as well as the westbound structure that were impacted. Mr. Galvan determined appropriate foundation lengths and developed channel repair and restoration details. These details included the use of gabion mattresses and baskets, concrete armor units (A-Jacks) and stone protection. FM 20 at San Marcos River, Austin District, channel meander and lateral migration resulted in a severe angle of attack. This angle of attack in conjunction with flood events resulted in complete erosion of the north approach embankment resulting in in bridge closure. Mr. Galvan assessed channel flow and migration patterns and from an existing hydraulic study determined stone size needed for armoring and redirecting the Marcus J. Galvan, PE Executive Vice President - Geotechnical Engineer channel. A stone buttress and stone tie-back system was used to armor and redirect channel flow. US 183 at Boggy Creek, Austin District, urbanization upstream and down cutting of the Colorado River resulted in a raw and unstable channel under the US 183 main lane bridges. Mr. Galvan studied flow patters, determined global stability of the channel banks and developed armoring details for the portion of channel under the bridges. Details included soil nail temporary special shoring and stone protection. Park Road 4 in Palo Duro Canyon, Amarillo District, continued erosion of the side slopes of Park Road 4 leading to the lower canon floor resulted in encroachment of the roadway and stability/safety concerns. The main erosion occurred at storm sewer discharge points located at specific locations along the roadway. Retaining wall details were developed to best retain the roadway embankment and handle storm water runoff. Due to the sensitive environmental nature of the park the wall system had to blend into the natural surroundings. Wall structures included gabion gravity walls as well as gabion faced MSE walls.