CONDOR EARTH TUNNELS AND WINE CAVES

CONDOR EARTH provides technical support for the construction of underground works. Depending on specific project needs, this support can include: ▪ Project feasibility studies ▪ Design services ▪ Construction management - Serving as the owner's technical representative or Construction Manager - Technical review of contractor's methods ▪ Field engineering - Design optimization based on field observation - Field observations of geologic conditions to determine the applicability of the design - Confirm that ground supports and water seepage mitigation measures adequate and in the right place ▪ Quality assurance - Focusing on client’s goals and objectives for finished project ▪ Materials testing and special inspection ▪ Program coordination with team consultants and contractors

Additionally, Condor provides general geologic, geotechnical and geostructural engineering support as needed: ▪ Geotechnical reports for winery structures, tanks, retaining walls, slopes, portal and cut/cover structures ▪ Geohazards investigations ▪ Soil anchors, tie-backs, rock bolts and shotcrete wall design ▪ Water storage reservoir dams, embankments and liner design ▪ Storm water compliance ▪ Water Availability Analysis

QUALIFICATIONS Condor is a leader in geotechnical/geological evaluation and geostructural design of small and medium sized tunnel projects, including numerous tunnels and wine caves in the Napa/Sonoma Valley, Central Coast, and Sierra Foothills regions. With approximately 50 employees in five California offices, Condor is a diversified, multidisciplinary organization with the capability to provide a variety of earth and environmental science, engineering, mapping, GIS, materials testing and special inspection, construction management and monitoring services to private and public sector clients. Condor’s experience includes evaluating geological hazards; geotechnical foundation, slope cut/cover and tunneling conditions; tunnel liner, shaft, rehabilitation and portal design; tunnel construction management; and materials testing. Our clients include the agricultural, mining, and construction industries; water resources managers and developers; educational and health institutions; and federal, state, and local governmental agencies. A partial list of Condor’s tunnel projects is included in Table 1. Project Personnel CONDOR assigns experienced professionals to meet the technical and management requirements for completing project work in a competent and cost effective manner. Depending on the project scope, the following lead professionals will conduct the work with the support of staff and associate engineers, field technicians, computer-aided drafting, word processing, and accounting personnel as needed. Scott W. Lewis, P.G., C.E.G. – Principal Engineering Geologist, Principal Tunneling Consultant. Mr. Lewis has over 30 years of experience in geologic investigations and construction/repair of tunnels, structural foundations, landslides, slope stability, dam sites, and other geologic hazards. He has served as the project manager and/or principal investigator on over 300 tunnel feasibility and construction projects. His specialty is in feasibility and conceptual design, coordinating and performing field investigations, tunnel evaluation, construction plans and specifications preparation, and construction management and supervision. Andrew S. Kositsky, P.E., G.E. – Senior Civil/Geotechnical Engineer. Mr. Kositsky serves as Condor’s lead Design and Geotechnical Engineer for tunnel, wine cave, dam, retaining wall and shoring projects. He is responsible for preparing Design Submittals and Geotechnical Engineering Studies. He has over 25 years of experience in geotechnical investigations, foundations, slope stabilizations, tunnel and shotcrete wall designs, and related work. Mr. Kositsky provides engineering and peer review services for wine cave projects throughout California and elsewhere. Brad Peterson – Project Director. Mr. Peterson is a geologist with more than 30 years of experience in the construction industry with emphasis in project management, construction management, geotechnical engineering, materials testing and special inspection for various types of public and private infrastructure. Mr. Peterson is experienced in supervising and managing teams of engineers and inspectors on large scale construction projects in a wide variety of markets including commercial, residential, educational and healthcare facilities, transportation infrastructure and water resources. Mr. Peterson is an excellent communicator, is well organized, and is effective in the implementation of quality assurance/quality control procedures that enhance overall project quality and performance. Mr. Peterson is uniquely qualified to serve as Project Director based on his technical expertise in the industry and his broad field experience. Steven C. Devin, P.E., G.E. – Senior Civil/Geotechnical Engineer. Mr. Devin provides engineering support for Condor’s tunnel, wine cave, dam, retaining wall and shoring projects. He is responsible for preparing submittals and reports. He has over 25 years of experience in civil engineering, and over 10 years in geotechnical engineering/investigations and related work. Mr. Devin provides engineering and peer review services. Kyle V. White, P.G. – Associate Geologist. Mr. White serves as associate tunnel geologist for Condor and is responsible for tunnel logging and mapping, construction management, and inspection for general conformance with project specifications. Sierra Brandt – Staff Engineer. Ms. Brandt serves as a Staff Engineer for Condor and assists in design services of tunnels, dams, wine caves, portals and shotcrete retaining walls. Kim Tarantino – Project Coordinator. Ms. Tarantino serves as Project Coordinator for Condor and assists in client and project management, coordination of submittals, design and field services, and all aspects of administrative support from feasibility services to construction management. John Kennedy – Senior Technician/Special Inspector. Mr. Kennedy serves as Senior Technician and Special Inspector for Condor in construction phases of projects. Gregg E. Korbin, Ph.D. – Geotechnical Consultant. Dr. Korbin is an associate geotechnical consultant that has worked together with Condor on numerous projects over the past 25 years and with Mr. Lewis over the past 30 years. He has extensive experience in the design and construction of underground works. Dr. Korbin provides oversight, technical analyses, design and peer review services. Michael Gowring – Underground and Heavy Construction Consultant. Mr. Gowring is an associate consultant with over 40 years of underground and heavy construction experience. He has served as tunnel project manager for various construction companies. Mr. Gowring provides project constructability and cost estimate services.

For additional information please contact:

Scott W. Lewis, PG, CEG Principal Engineering Geologist Principal Tunneling Consultant Condor Earth P.O. Box 3905 21663 Brian Lane Sonora, CA 95370 Office: 800.800.0490 Direct: 209.536.7370 Cell: 209.601.5585 [email protected]

“We Lay the Groundwork for Success”

Condor Earth www.CondorEarth.com

X:\Office\Marketing\Discussion Docs\Wine Caves\2019 Tunnels_Wine Caves SOQ.docx

CONDOR EARTH Table 1 Selected Wine Cave and Tunnel Project Experience

Client/Owner Project Services Bypass tunnel feasibility, site investigation and monitoring, design, contract documents, drawings, GBR, GDR, preliminary construction cost Oakdale Irrigation District Two-Mile Bar Tunnel estimate, assist with contractor selection and evaluation, construction observation and management, special inspection and materials testing Skunk Train Tunnel and Consultation, construction management, civil Mendocino Railway Slope Repairs design Project feasibility, geotechnical exploration and Winery and Caves, report, cave design, access road design, QA and Ferrari-Carano Vineyards Reservoir, Access Road, consultation during construction, materials testing, and Winery Portals, and Tunnel wine cave expansion (PreVail) design and Extension construction observations, materials testing Wine Cave, Shaft and Project feasibility and consultation, cave and B Cellars Portals shotcrete wall design, construction observations Conceptual design, subsurface investigation, Truckee Meadows Water Fleish Tunnel preliminary construction cost estimate, final Authority design, construction observations Project feasibility, cave construction plans and The Napa Valley Reserve Wine Cave and Portals consultation, portal design, cave bid documents, construction monitoring and management Project feasibility, cave and portal design, landslide Winery, Caves and hazard evaluation, geotechnical exploration and Vineyard 29 Portals report, QA and construction monitoring, special inspection and materials testing Site exploration, design analysis, plans and Stanford University Stadium Tunnels specifications, construction observation Exploration, design, QA and construction Underground Winery, Jarvis Vineyards monitoring, materials testing, construction Wine Caves, and Portals management Wine Cave, Water Initial feasibility, conceptual design, geotechnical Realm Cellars Storage Tunnel and report, cave and portal design, site wall design and Shotcrete Walls construction observation Underground Art Project feasibility, design, construction Stone Estate Gallery and Portals management, monitoring and consultation City and County of San Tunnel construction and slope shoring plans for Francisco – Hetch Hetchy Tunnel and Slopes Priest Reservoir Bypass Project, construction Water and Power observation Conceptual design and preliminary cost estimate Pacific Gas and Electric Caribou 2 Tunnel and for new tunnel and shaft bypass of existing Company Shaft penstock Client/Owner Project Services East Bay Regional Park Exploration, surveying, design, construction Underground Mining District – Black Diamond monitoring, materials testing for historic mine Museum Mines stabilization Continuum Estate Water Storage Tunnel Tunnel design and construction observations Pre-construction site evaluation, site exploration, Underground Winery, Staglin Family Vineyards design, geotechnical report for cut/cover, QA and Caves, and Portals design consultation during construction Repair and improvements evaluation, rehabilitation Canal, Tunnels and project design and construction documents, Oakdale Irrigation District Shafts construction management, special inspection and materials testing Stanford Linear Tunnel Site exploration, preliminary design report Accelerator Center Project feasibility, site exploration, design, Wine Cave, Portals and Brassfield Estate Winery construction drawings, construction observation, Elevator Shaft materials testing and special inspection Project feasibility, geotechnical exploration and Winery, Caves, and report, cave and portal design, landslide hazard Bryant Family Vineyard Portals evaluation, QA and construction monitoring, materials testing St. Paul Travelers Expert consultant regarding construction defect Water Tunnel Insurance claim U.S. Bureau of Tunnel construction and slope shoring plans for Tunnel and Chamber Reclamation American River Pump Station Project Claim documentation tunnel mapping pertaining to San Diego Water Authority Water Tunnel TBM performance Performance evaluation, remediation Northern California Power Diversion Tunnels, recommendations, design, surveying, landslide Agency Dams, Slopes investigation, construction monitoring Pre-construction evaluation of tunnel conditions, Wine Caves, Portals, geotechnical exploration and reports, design, QA Stag's Leap Wine Cellars Slopes, Reservoir, and consultation during construction, materials Visitor Center testing, geotechnical report Hazard analysis and repair/improvement evaluation South San Joaquin Canal and Tunnels of existing facilities, repairs design, construction Irrigation District observations Portal, tunnel and cut/cover design, grading and Wine Caves, Portals, Gloria Ferrer utility plans, QA and consultation during and Winery Expansion construction, materials testing Project feasibility, cave design, geotechnical Winery, Caves, and Kathryn Hall Winery exploration and report, portal and retaining wall Portals design, QA and consultation during construction Project feasibility, geotechnical exploration and Girard Winery, Rudd Winery, Caves, Portals, reports, tunnel/shaft support design, QA and Wines and Shaft consultation during construction, materials testing Client/Owner Project Services Leslie Rudd Investment Elevator Shaft and Project feasibility, design, construction Company, Rudd Winery Related Improvements observations, special inspections Evaluation of tunnel support requirements during Eisele Vineyards Wine Caves construction, expansion feasibility Exploration, geotechnical and civil conceptual Tuolumne Utilities District Diversion Tunnel, Dam design Pre-construction site evaluation, portal and Wine Caves, Portals, von Strasser Winery reservoir design, hydrology study, construction and Reservoir monitoring, materials testing Project feasibility, tunneling report, tunnel design, Winery, Cave, and permitting and contractor selection assistance, Dierberg Vineyards Portals consultation and construction oversight, shotcrete wall and portal design Project feasibility, geotechnical exploration and Winery, Caves, and O'Shaughnessy Vineyard report, tunnel/portal support design, QA and Portals consultation during construction Oakville Ranch Winery Construction observations and ground support Wine Caves (Miner Family) design Stabilization and seepage remediation of historic Vine Cliff Cellars Winery and Caves winery and cave, new cave support design Metropolitan Water District of Southern Water Tunnel Pre-bid analysis of design alternatives California As-built evaluation and construction dispute J. Fritz Winery Winery and Caves arbitration Two Wineries, Wine Project feasibility, surveying, geotechnical Sutter Home Cave, and Reservoirs exploration and reports, construction QC South Tahoe Public Wastewater Tunnel Feasibility study Utilities District Winery, Caves, and Project feasibility, portal/retaining wall rock bolt Hartwell Vineyards Portals design, and construction monitoring, tunnel QA Alexander Valley Wine Caves Exploration and project feasibility Vineyards Geotechnical recommendations for expansion of Wine Caves, Portals, existing facilities, exploration, report and design, Hans Fahden Winery Tasting Building, and construction observations, update fire safety plans, Reservoir portal and tunnel improvements Exploration, project feasibility, cave design, Spring Mountain Vineyard Wine Caves and Portals construction monitoring, materials testing Tunnel stability verification during construction Cuvaison Winery Wine Caves and Portals per County requirement Silverado Vineyards Wine Caves Project feasibility and design Client/Owner Project Services Site evaluation of development alternatives, Seavey Vineyards Winery and Caves geotechnical exploration and report, construction monitoring Confidential Wine Caves Expert witness regarding construction dispute Project feasibility, site exploration, design, Byington Winery Wine Caves and Portals geotechnical report, QA and construction monitoring Winery, Caves, Portals, Exploration, portal design, dam safety Villa Amorosa-Sattui Dam, Water Tower, and recommendations, site exploration, geotechnical Winery Warehouse report, foundations, construction monitoring Evaluation of structural stability of two existing Confidential Wine Caves caves as part of ownership transition Placer County Water Evaluation of tunnel leakage, design Diversion Tunnel Agency recommendations Materials testing, exploration, design review, Kautz Ironstone Vineyards Wine Cave and, Dam construction monitoring Hydropower Tunnels, Performance evaluation and remediation Sierra Constructors Dams recommendations Surface and underground survey and design/repair U.S. Dept. Interior – Office Underground Mine: consultation for collapsed historic mine openings of Surface Mining Hazard Abatement and shafts Project feasibility, geotechnical exploration and Winery, Caves, and Green and Red Vineyard report, QA and design consultation during Portals construction Wender Partners Winery and Caves Project feasibility Project feasibility, geotechnical exploration and Winery, Caves, and Dancing Hares Winery report, cave and portal wall design, construction Portals monitoring, and special inspection Project feasibility, site exploration, geotechnical Winery, Caves, and Blankiet Vineyard report, cave and portal design, construction Portals monitoring, special inspection and materials testing Wine Caves and The Mobius Group Project feasibility Reservoir Stevenot Winery Wine Caves Project feasibility, cave design Project feasibility, geotechnical exploration, cave Frazier Winery Wine Caves and Portals design, portal design, QA and consultation during construction Martinelli Winery Wine Caves Project feasibility Project feasibility, cave design, QA and Johnson/Nelson Estate Wine Caves consultation during construction East Bay Regional Park Survey and tunnel and shaft stability evaluation, Underground Mine District - Eureka Slope design, construction QC Client/Owner Project Services Pre-construction site evaluation, grading plans, A. Rafanelli Winery Wine Caves and Portals cave design, consultation during construction, material testing Mark West Aggregates Wine Caves Project feasibility Project feasibility, preliminary design, geotechnical Azalea Springs Vineyards Winery and Caves exploration and report Underground Winery Palmaz Winery Project feasibility, landslide hazard evaluation and Caves Project feasibility, geotechnical exploration and Sloan Winery Wine Cave and Portals report for cut/cover, portal design, construction monitoring Geohazards evaluation, geotechnical report, Terra Valentine Winery Winery and Caves construction monitoring Neyers Vineyards Wine Cave and Portals Project feasibility, tunnel and portal design Tunnel liner remediation design, construction Rutherford Hill Winery Wine Cave monitoring and testing Nutter Cellar Wine Cave Project feasibility, tunnel and portal design Rojas Vineyards Wine Cave Project feasibility Indian Spring Vineyards Reservoir Evaluation of seepage impacts Harris Cellar Wine Cave Project feasibility Dalle Valle Vineyards Wine Cave Project feasibility Neiman Cellar Wine Cave Project feasibility Tunnel remediation evaluation and design, cave S. Anderson expansion design, site hazard and geotechnical Vineyards/Cliff Lede Wine Cave and Portal exploration and reports, QA and consultation Vineyards during construction Jericho Canyon Vineyards Wine Cave Project feasibility, tunnel design Cave expansion feasibility, site exploration, tunnel Flora Springs Winery Wine Cave and Portal and portal design, dewatering recommendations, QA and consultation during construction Middletown Farms Winery and Cave Project feasibility, site exploration Wattle Creek Winery Winery and Cave Project feasibility Wine Cave, Office, and Design consultation, geotechnical study, safety Cosentino Winery Pond evaluation of existing dam Broll Mountain Vineyards Winery and Cave Project feasibility Anomaly Vineyards Winery Design consultation for cut/cover structure Winery, Cave, Portals, Project feasibility, site exploration, geotechnical Tom Eddy Winery and Shaft report, tunnel/portal/shaft design, materials testing Stagecoach Vineyards Winery and Cave Project feasibility Project feasibility, site exploration, underground Robert Young Estate Cave, Portals, and design, portal design, QA and consultation during Winery Elevator Shaft construction Client/Owner Project Services Lynch Valley Winery Winery and Cave Project feasibility Stoller Winery, OR Wine Cave Design consultation for project in Oregon Narrow Gate Vineyards Wine Cave Portal support design Chalone Wine Group Winery and Cave Project feasibility Rancho Encantado Winery Winery and Cave Project feasibility Project feasibility, cave and portal/ retaining wall Winery, Cave, and design, cave bid documents, tunnel design, Lynmar Winery Portals consultation during construction, materials testing, and special inspections Project feasibility, site exploration, geotechnical Winery, Cave, and Ladera Winery report, underground design, QA and consultation Portals during construction, special inspections

Poliza Vineyards Wine Cave Evaluation of as-built conditions

Calaveras Cement Tunnel and Shaft Project feasibility Underground Site evaluation, pressure tunnel and tunnel plug Confidential Hydropower Plant design recommendations Roy Estate Winery and Cave Project feasibility Project feasibility, site exploration, geotechnical La Jota Winery Wine Cave and Portals report, cave and portal design, QA and construction monitoring

Darioush Winery Wine Cave Project feasibility and preliminary design

Arroyo Creek Vineyards Wine Cave Project feasibility and preliminary design Piccetti Family Vineyards Winery and Cave Project feasibility Project feasibility, and site exploration, geotechnical report, cave and portal design, cave Keever Vineyards Winery and Cave bid documents, QA and consultation during construction, construction monitoring, special inspection Phelan Vineyards Wine Cave and Portal Portal design, QA and construction monitoring Project feasibility and preliminary design, repair Twisted Oak Winery Winery and Cave design consultation Cave and portal design, geotechnical exploration McMinn Estate Private Cave and Portals and report, QA and construction monitoring East Bay Regional Park Underground Mining Feasibility, surveying, preliminary design of District-G Right Museum, Access Shaft historic mine improvements

Annapura Winery Winery and Cave Project feasibility and preliminary design

Dotzler Winery Winery and Cave Project feasibility and preliminary design Capay Valley Vineyards Winery and Cave Project feasibility Gallo of Sonoma Winery and Cave Project feasibility, evaluation report Client/Owner Project Services Project feasibility and landslide hazard analysis, Pillar Rock Winery Winery and Cave geotechnical exploration and report Bidwell Creek Winery Winery and Cave Project feasibility Simi Winery Winery and Cave Project feasibility LSS Winery Winery and Cave Project feasibility, site exploration Project feasibility, site exploration, Christensen Estate Underground Residence instrumentation, preliminary design Saracina Vineyards Wine Cave Evaluation of structural stability of existing cave Bruno Cellars Wine Cave Stability evaluation of existing cave Project feasibility and preliminary design, site Ehlers Estate Winery and Cave exploration, geotechnical report, cave bid documents, construction observation

Clark-Claudon Vineyards Wine Cave Project feasibility, site exploration

Stability evaluation and repair design of existing Schramsberg Wine Cave cave Niebaum-Coppola Wine Cave Portal Site exploration, portal geotechnical report Project feasibility and design, site exploration, Winery, Cave, and Renteria Wines geotechnical report, construction observations and Portals consultation, and special inspection Site exploration, portal geotechnical report and Smith Winery Wine Cave design, QA/QC and special inspection Grandstrom Estate Wine Cave Project feasibility, design consultation Project feasibility, design report, plans and Carlston Family Private Cave specifications, construction monitoring and QA/QC Site exploration, geotechnical report, cave Del Dotto Vineyards Winery and Cave feasibility Project feasibility and preliminary design, Oakford Vineyards Winery and Cave geotechnical study Snowden Vineyards Winery and Cave Project feasibility Site exploration, landslide hazard analysis and Bravante Vineyards Winery and Cave report, geotechnical report, preliminary cave design, construction observation Adams Vineyards Wine Cave As-built construction evaluation Project feasibility, site exploration and Phillips Winery Winery and Cave geotechnical report, portal/retaining wall design Roncone Vineyards, AZ Wine Cave Project feasibility for project in Arizona Site exploration, geotechnical report and design, Freeman Winery Cave Portal construction monitoring and QA/QC Tunneled Garage and Feasibility consultation and permitting assistance, James Family Shaft site exploration, analysis, and underground design Client/Owner Project Services Winery, Cave, Barrel Design consultation, geotechnical exploration and Gargiulo Winery Cellar, Ag Storage Barn report, portal/retaining wall design and Residence Design consultation, geohazards evaluation and Kenzo Winery Winery and Cave report, site exploration, geotechnical report, portal/retaining wall design Raven Oaks Winery Winery and Cave Project feasibility, preliminary cave design Design consultation and consultation during Underground Winery Boeschen Vineyards construction, cave support design, geotechnical and Portal study, portal design Freemark Abbey Wine Cave Project feasibility A.V. Investors Winery and Cave Project feasibility Six Sigma Ranch and Winery, Cave, and Site exploration, geotechnical report and Vineyards Portal portal/retaining wall design, special inspection Project feasibility, design recommendations and Bull Family Private Cave and Portal consultation during construction Phelps Vineyards Winery Shotcrete retaining wall design, special inspection Project feasibility, design consultation, site Winery, Cave, and exploration, geotechnical report, tunnel and portal Fleming Winery Portals design, construction observations, and special inspection Winery, Cave, and Design, construction observations and Vineyard 7 & 8 Portals consultation, and special inspection Feasibility, tunnel design and report, development Winery, Cave, and Halter Ranch consultation, shotcrete wall design, construction Portals observations Kongsgaard Winery and Cave Project feasibility Evaluation of historic tunnel conditions and Cape Horn Water Oakdale Irrigation District rehabilitation design, plans and specifications, Tunnel construction management Richard Family Tunneled Garage Project feasibility Deister Family Private Cave Project feasibility Tunnel support remediation and rehabilitation Pine Ridge Winery Wine Cave consultation Project feasibility, design and report, construction Gainey Vineyard Wine Cave and Portals management consultation Cave and portal/site shotcrete wall value Ehren Jordan Wine Cellars/ Underground Winery, engineering and design, construction monitoring, Failla Wines Cave, and Portals special inspection Frog Hollow Wine Cave Repair feasibility Stocker Estate Private Cave Project feasibility Client/Owner Project Services Tunnel, shaft and portal design, construction Arkenstone Vineyard Underground Winery monitoring and consultation, materials testing and special inspection Skipstone Ranch Underground Winery Project feasibility Design analysis and report, construction drawings, Wine Cave and PlumpJack Winery/CADE consultation, and construction observation, special Shotcrete Wall inspection Project feasibility, design, geotechnical report, North Winery Wine Cave and Portals construction consultation Fountain Grove Round Wine Cave, Portals, and Project feasibility, site exploration, design analysis Barn Elevator Shaft and report, construction drawings Project feasibility, design consultation, contractor Lindstrom Winery Underground Winery selection assistance Lookout Ridge Winery Wine Cave and Portals Evaluation of existing conditions East Bay Regional Park Underground Mine Tour Site evaluation, route selection, ground control District- Black Diamond Route measures, design, and construction cost estimate Mines Merced Irrigation District Water Tunnel Rehabilitation and improvement evaluation Chappellet Winery Wine Cave Project feasibility and preliminary design Project feasibility, design, landslide hazard Winery, Cave, and Sage Hill Vineyards analysis, geotechnical exploration and report, Portals construction consultation Project feasibility, preliminary tunnel design, site Somerston Winery Winery and Cave exploration, geologic hazard study, geotechnical report Hospitality Cave, Project feasibility and preliminary design, Meadowood Resort Drainage Tunnel rehabilitation of historic tunnel Project feasibility, tunnel design, site exploration, Nemerever Residence and Wine Cave and Portal portal design, construction observations and special Winery inspection Charlie Havill Winery Wine Cave Project feasibility and preliminary design Project feasibility, tunnel design, site exploration, Olney Wine Caves Wine Cave and Portal portal design, construction observations and special inspection Project feasibility and preliminary design, site Heitz Wine Cellars Wine Cave exploration Confidential Wine Cave and Portal Expert services for construction litigation case Project feasibility, tunnel design, consultation, Chehalem Winery, OR Wine Cave and Portals construction management Project feasibility, portal design, site exploration, Screaming Eagle Winery, Cave, and geotechnical report, tunnel design consultation, (El Retiro Ranch) Portals construction observations and special inspection Client/Owner Project Services Project feasibility and tunnel and portal design, Cimarossa Winery Winery and Cave geotechnical report, construction management Site exploration, geotechnical report, portal design, Maldonado Winery Wine Cave and Portal tunnel design consultation, special inspection One True Vine Wine Cave Project feasibility Wine Cave, Portals, and Drum Canyon Vineyards Project feasibility, tunnel design and report Shaft Geotechnical report, portal and tunnel design, Barnett Winery Wine Cave and Portals construction observations Project feasibility and preliminary design Pina Cellars Wine Cave consultation Project feasibility, preliminary design consultation, Confidential Winery and Cave cave and shotcrete wall design, construction consultation and observations Confidential Wine Cave Expert service for construction litigation case Project feasibility, tunnel design and report, Quady North, OR Wine Cave and Portals construction management Underground Storage Design, plans and specifications for tunnel Confidential Facility rehabilitation Underground Project feasibility and preliminary construction Confidential Music/Concert Facility cost estimate Project feasibility, site exploration, design, Wine Cave, Shaft and Presqu’ile Winery construction plans, construction consultation and Shotcrete Wall observations Tunnel design consultation, tunnel construction Cornell Winery Wine Cave and Portals plans, shotcrete wall design Scully Winery Winery and Cave Project feasibility and preliminary design M. T. Bottles Winery and Cave Project feasibility Design, plans and specifications for tunnel Practice Gym Access Stanford University permitting and construction, construction Tunnel observations Castlevale Winery Winery and Cave Project feasibility, geohazard study Winery and Cave, Project feasibility, site exploration, geotechnical Continuum Winery Portals, Water Storage report, cave and portal design, construction Tunnel, Access Roads observations Fossanova Vineyard Winery and Cave Project feasibility, site exploration Project feasibility, geotechnical engineering, Cave and Shotcrete design, construction plans, construction Feathered Horse Winery Walls observations, special inspection and materials testing Wright Winery Underground Winery Project feasibility and preliminary design Client/Owner Project Services Site exploration, design reports, construction plans, Hill House Estate Private Cave and Portals construction observations, special inspection and materials testing Vineyard 22 Underground Winery Project feasibility and preliminary design Tri-Dam Hydroelectric Shaft Rehabilitation Site investigation and repairs recommendations Project Bremer Family Winery Wine Cave and Portals Technical advisor and construction management Badger Mountain, WA Wine Cave Project feasibility, preliminary design report Project feasibility, site exploration, geotechnical Winery, Wine Cave and Oakville Grade Winery report, preliminary cave design, construction Portals observations Tri-Dam Hydroelectric Tulloch Powerhouse Contractor’s temporary shoring design engineering Project Unit 3 Shoring and construction observations Knez Winery Wine Cave Project consultation for cut/cover barrel room Project feasibility, design consultation, site Saxum Vineyards Underground Winery exploration, cave and shotcrete wall design, construction observations Placer County Water Rehabilitation evaluation, drawings and Ragsdale Water Tunnel Agency specifications, construction management Harlan Estate Wine Cave Improvements consultation and engineering U.S. Office of Surface Exploration, design and construction observations Mine Hazard Abatement Mining for abandoned underground mine hazards Beemiller and Associates Wine Cave Project feasibility and conceptual design Krupp Brothers Estates Wine Cave Project feasibility Morlet Wines Abandoned Wine Cave Site investigation Bibliowitz Wine Cave Project feasibility Confidential Landslide Temporary and permanent repairs Project feasibility, site exploration, geotechnical Epoch Estate Winery Wine Cave and Portals report, design Project feasibility, site exploration, geotechnical Wine Cave, Portal, Calera Wine Company report, design, construction management, Cut/Cover construction observations Araujo Estate Wine Cave Existing cave improvements recommendations Site investigation, geotechnical report, design, Castillo de Amorosa Wine Cave and Portal construction management, construction observations Hernandez Estate Private Cave Project feasibility Wine Cave and Project feasibility, site exploration, design, KB Caves Shotcrete Walls construction observations Kitoko Vineyard Winery and Cave Project feasibility Project feasibility, site exploration, preliminary McEvoy Ranch Winery and Cave design Client/Owner Project Services Rehabilitation of ca. 1850’s wine cave, ground Wine Cave, Water Buena Vista Winery support and tunnel design, and construction Storage Tunnel observations Rehabilitation of existing wine cave, project Wine Cave and Odette Winery consultation, site exploration, design, construction Shotcrete Walls observations Black Diamond Mine Portal Project consultation Allen Land Design Personal Use Tunnel Project feasibility Araujo Estate/Axiom Rehabilitation of existing wine cave, project Wine Cave Engineers consultation Site investigation, geotechnical report, cave and Cairdean Vineyards Wine Cave and Portals shotcrete wall design, construction observations Site investigation, geotechnical report, shotcrete Davis Residence Shotcrete Wall and Cave wall and cave design, construction observations Site investigation, geotechnical report, cave and Hamel Family Winery Wine Cave and Portals shotcrete wall design, construction observations Project feasibility, site exploration for multiple Jackson Family Wines Wine Cave and Portals projects Mihalcheon Residence Garage Tunnel Project feasibility and consultation Project feasibility and conceptual design, Oak Mountain Winery Wine Cave and Portals geohazards study, cave and shotcrete wall design, construction observations One Rincon Hill Shoring Temporary shoring design Black Diamond Mine B North Underground mine stabilization Site investigation, geotechnical report, cave and L’Aventure Winery Wine Cave and Portals shotcrete wall design, engineering services during construction Placer County Water Pulp Mill Tunnel Rehabilitation evaluation of existing tunnel Agency Evaluation of conditions, consultation and design, Black Diamond Mine Retreat Mine construction observations Site investigation, geotechnical report, design, Chateau 15 Wine Cave and Portals construction observations Private Cave, Shaft and Site investigation, geotechnical report, design, Fournier Residence Portal construction observations

Mayacamas Vineyards Wine Cave and Portal Project consultation, preliminary design Winery, Cave and Site investigation, geotechnical report, cave and Mountain Peak Vineyards Shotcrete Walls shotcrete wall design Site investigation, feasibility report, hydrogeology Ramey Wine Cellars Wine Cave and Portal study, permitting support Site investigation, landslide hazard evaluation, Wine Cave and Sinegal Estate Winery geotechnical report, cave and shotcrete wall design, Shotcrete Walls construction observations Client/Owner Project Services Whitehall Lane Winery Wine Cave and Portal Initial feasibility Arbuckle Winery Wine Cave Project feasibility Underground Art Confidential Project feasibility and preliminary design Gallery Chapin Vineyards Winery and Cave Project feasibility and landslide hazard assessment Underground Winery, Yountville Hill Winery Shafts, Shotcrete Walls, Project feasibility and preliminary design Tasting Room AS Vineyards Wine Cave Project feasibility Site exploration, geotechnical report, design, Roth Winery Wine Cave and Portals construction observations Starfield Vineyards Wine Cave Project feasibility Fort Ross Winery Wine Cave Initial feasibility Project feasibility, design, engineering and Black Diamond Mine Big Stairs construction monitoring Railtown Access Tunnel Sierra Railroad Project feasibility and preliminary design and Shaft Wine Cave and von Strasser Highway 29 Project feasibility and conceptual design Shotcrete Wall Vintage Oakville Cross Shaft and Shotcrete Wall Feasibility, design and construction observations Residence Site investigation, geotechnical report, design, Woolls Ranch Shotcrete Walls construction monitoring Rice Residence Wine Cave Initial feasibility Villa Aix Vineyards Wine Cave Initial feasibility, geotechnical report, design Darms Lane Winery Wine Cave and Portals Initial feasibility, conceptual design Initial consultation, wine cave and shoring, site The Hilt Winery Winery investigation, geotechnical report, debris flow mitigation Denton Residence Tunneled Garage Geotechnical report, preliminary design Initial feasibility, geotechnical report, cave and Private Use Cave and Perch portal design, engineering and construction Cellar observations, materials testing Promise Wines Wine Cave Initial feasibility, site investigation Initial consultation, geotechnical investigation, Few and Far Between Wine Cave preliminary design, geohazards analysis Hacienda de las Flores Wine Cave Initial feasibility Ciminelli Winery Wine Cave Initial feasibility Initial feasibility, site investigation, geotechnical Aloft Winery Wine Cave and Portals and geohazards report, tunnel design consultation Client/Owner Project Services Saggio Hills Resort and Tunnel and Shotcrete Initial feasibility, geotechnical report, cave and Residences Walls portal design, retaining wall design Project consultation, cave and shotcrete wall Wine Cave and Portals, Teucer Winery design, site investigation and tunnel design, Water Storage Tunnel construction observations Geotechnical report, design, construction Silver Cloud Winery Shotcrete Walls observations Hard Six Winery Wine Cave Initial feasibility, preliminary design Twain Harte Lake Emergency repairs investigation, design, Dam Association construction observations and management Twain Harte Community Rock slope stabilization investigation, repairs Pipeline Services District design, construction observations Geotechnical investigation, geohazard Napa Gateway Winery investigation Le Mélange Wine Cave Feasibility consultation Henderson Residence Tunneled Garage Feasibility consultation The Vineyard House Wine Cave and Portals Feasibility and conceptual design Winery Wine Cave and Construction consultation, design, materials testing Italics Winery Shotcrete Walls and special inspection The Culinary Institute of Storage Caves and Geotechnical investigation, design, consultation America – Greystone Retaining Walls Access Road and Water Meadowood Lane Winery Geotechnical investigation, design, inspection Tanks Evaluation of conditions, assessment of findings, Canal Segment 4 Long conceptual design, 100% design and construction Oakdale Irrigation District Term Repairs bid documents Design cave and shotcrete wall, update Top Shed Vineyards Wine Cave Completion geotechnical report, engineering and construction services Consultation, seepage investigation, documentation Tri-Dam Project Beardsley Afterbay Dam report, rehabilitation design, permitting support, rehabilitation construction bid documents Reservoir rim landslide: Site hazard evaluation and Tri-Dam Project Tulloch Lake consultation Emergency mitigation support, design, Tri-Dam Project Tulloch Dam Spillway construction observation Northern California Power Evaluation and recommendations, repair design, North Fork Tunnel Agency construction monitoring, materials testing Dragonfly Investment Black Mountain – Evaluate existing conditions of tunnel, Group Spring Tunnel recommendations and design Umbra Winery, TX Wine Cave Initial consultation, conceptual design Gandona Winery Winery Expansion Project feasibility Client/Owner Project Services Sisterdale Vineyards, TX Wine Cave Initial consultation, conceptual design Modesto Irrigation District Various Tunnels Initial evaluation of current conditions Anderson’s Conn Valley Evaluation of existing conditions, repairs design, Wine Cave and Portals Vineyards construction bidding assistance Calaveras County Water Annual inspection, instrumentation evaluation, White Pines Dam District repair recommendations Chateau de Montrichard Winery and Cave Project feasibility Emergency repairs design and construction Schramsberg Winery Historic Cave observations South San Joaquin Evaluation of hazard conditions, evaluate options, Canyon Tunnel Irrigation District conceptual design Initial consultation, conceptual design, Shutters Winery Wine Cave geotechnical engineering study, design cave and shotcrete retaining wall Initial consultation, geohazards analysis, water Oakville Winery Winery and Cave availability analysis Initial consultation, hazard evaluation, site Tuolumne Utilities District O’Neil Tunnel investigation Antelope Valley Ranch Cheese Aging Cave Initial consultation, conceptual design Initial consultation, conceptual design, Kitoko Vineyard Winery and Cave geotechnical and engineering design Initial consultation, evaluation of conditions, Vine Cliff Winery Cave Abandonment project feasibility, design of remedial measures, cave abandonment engineering services Private Cave, Portal and Big Rock Residence Initial consultation and conceptual design Access Shaft Mine closure (backfill with cellular grout) design KB Home Mine Hazard Abatement and construction observations Shotcrete, Pier and Consultation, site exploration, geotechnical report Glen Cove Conventional Retaining and engineering design, construction observations Walls Shotcrete and MSE Consultation, site exploration, geotechnical report Greenfield Residence Retaining Walls and engineering design Emergency repairs including bypass, embankment Tri-Dam Project Access Roads and retaining wall design and construction observations Winery Replacement, Consultation, site exploration, design and permit Signorello Winery Wine Cave and Portals submittal support Repairs design for flood-damaged dam and Tuolumne Utilities District Lakewood Dam spillway State-mandated potential flooding hazard analysis Various Dam Owners Dam Inundation Studies for existing dams Confidential Private Wine Cave Initial consultation Client/Owner Project Services Conceptual design, shotcrete wall design, tunnel Inglenook Production Cave geostructural design, permit support Conceptual design, site exploration, geotechnical Cave and Shotcrete Montage Healdsburg report, engineering design, construction monitoring Walls and observation Conceptual design, site exploration and reporting, Stotesbery Residence Residential Cave engineering design Alexander Valley Wine Cave Expansion Conceptual design, site exploration and reporting Vineyards Underground Winery, Tesseron Vineyards Conceptual design and site exploration Cave, Portals Initial consultation and conceptual design, site Lauper Residence Residential Cave exploration and report, engineering design, construction observation and testing Initial consultation and conceptual design, water Farella Vineyards Wine Cave and Portals availability analysis Geotechnical engineering feasibility of site Harlan Estate Site Development development Feasibility, conceptual design, cave and portal Booker Wines Wine Cave and Portal design, elevator shaft design, shotcrete wall design, construction observation Existing Residential Cave, Retaining Wall Fire assessment and engineering consultation Stull Residence and Water Storage during repairs and reconstruction Tunnel Colgin Cellars Wine Cave and Portals Initial consultation and conceptual design Wine Cave and Water Initial consultation and conceptual design work for White Rock Vineyards Analyses potential wine cave, water availability analyses Wine Cave and Walt Wines Site investigation, geostructural design Shotcrete Wall