Payal is a Materials Engineer from Purdue University and a Historic Preservation specialist from the University of Texas-Austin, with over 10 years of experience in building envelope design, roofing, waterproofing, forensics, and building conservation/historic preservation. Prior to that she was a scientist in magnetics specializing in high performance magnetic alloys for aerospace applications. Payal is currently with Architectural Resources Group (ARG) in San Francisco, and was with Simpson Gumpertz & Heger (SGH) and Wiss, Janney, Elstner Associates, Inc. (WJE) prior to that. Her materials conservation work includes remediation of brick masonry contaminated after the BP Deepwater Horizon Oil Spill (Fort Livingston, Louisiana). Other projects in her historic preservation portfolio include the War Memorial Veterans Building, James Browning Courthouse Ninth Circuit Court of Appeals, and the Ferry Building (SF), the Stanford Memorial Church (Stanford), The LA Times Building (Los Angeles), American Bank Building (Portland), Bexar County Courthouse (San Antonio), Tribune Tower (Chicago), and the Lyndon B. Johnson Presidential Library and Plaza (Austin).
Jennifer is an Associate Principal for ARG Conservation Services, Inc. in San Francisco. She has experience working in both public and private sectors. Prior to her current position, Jennifer was a project manager at the San Francisco Arts Commission, senior conservator at ARG Conservation Services, historic compliance coordinator at the Presidio Trust, and architectural conservator at Materials Conservation Co. in Philadelphia, PA. Jennifer specializes in assessing historic and artistic materials, managing and planning mid to small scale projects, designing and performing hands-on conservation treatments, and implementing preventative conservation. She previously served as Chair for AIC’s Architectural Specialty Group.
Jeff has investigated several hundred structures in a wide range of projects. Investigations have involved conditions of distress and deterioration in a variety of materials, including concrete, steel, glass, and wood. The majority of his experience includes investigative work and design of repairs for structural and building envelope systems. Jeff has been with the firm Wiss, Janney, Elstner Associates, Inc. (WJE) for 18 years, with the most recent four years having settled in Los Angeles, California. Since that time, Jeff has been involved with the historic preservation of the following Los Angeles buildings: the Beverly Wilshire Hotel, the LA County Hall of Justice, and the John Anson Ford Theatre. Jeff Caldwell is a structure engineer and currently the Unit Manager and Associate Principal at WJE in Los Angeles.
Annie Lo is the Director of Building Envelope and Forensic Restoration for Walker Consultants. She is a building envelope expert and a licensed Architect who specializes in the design of exterior enclosures and waterproofing systems, as well as the restoration of existing buildings. Annie began her architecture career advocating for the preservation of historic landmarks in Southern California where she worked for the Los Angeles Conservancy and the MAK Center for Art + Architecture at the R.M. Schindler House. Her love for historic buildings brought her to San Francisco, where she managed the restoration of the Hallidie Building curtain wall façade. Annie is now a forensic architect who leads Walker’s team in the investigation of building envelope failures and consults on new construction assemblies related to below-grade waterproofing, plaza decks, exterior walls, fenestration systems, and roofing assemblies. She is a graduate of Columbia University’s Graduate School of Architecture, Planning, and Preservation.
Mara is an Architectural Historian and Preservation Specialist who worked for the Nevada State Historic Preservation Office in Carson City for the past nine years. During her tenure there, her expertise in interpreting and implementing the Secretary of the Interior’s Standards for the Treatment of Historic Properties helped guide proponents through an extensive array of preservation projects including those Hoover Dam (NHL). She has also reviewed several federal projects for compliance with the National Historic Preservation Act (NHPA). Mara is founding member and current president of the Nevada Architectural History Alliance (Nevada AHA). She completed her undergraduate degree in the History of Art at the University of California, Berkeley and received her graduate degree in Historic Preservation (Building Technology) from the University of Oregon.
Schäf is an expert in architectural photography with a practiced understanding of historic structures. He has completed documentary building and engineering surveys for architectural historians, municipalities and cultural resource management firms. His documentary photographs have been used to nominate sites to the National Register of Historic Places and as CEQA and Section 106 mitigation measures. He specializes in large format 5x7 and 4x5 film photography adhering to Secretary of the Interior's Standards for Architectural and Engineering Documentation, which are transmitted to the Library of Congress Historic American Buildings Survey (HABS), Historic American Engineering Record (HAER) and Historic American Landscapes Survey (HALS) collections. Subjects of his work include historic buildings, transportation and utility projects, bridges and range from a Cold-War stealth ship to an 1840 Adobe. Schäf is currently an adjunct professor at CA State University Northridge.
Michelle Sandoval, is a Senior Associate with Wiss, Janney, Elstner Associates, Inc. (WJE), and has over ten years of experience with building envelope restoration. Areas of focus include portland cement plaster restoration, wood window restoration, and roofing/waterproofing. Ms. Sandoval’s work includes investigations of distressed and deteriorated conditions in existing buildings. She participates in various projects, including facade inspections, condition surveys, and preservation and repair of historic buildings. Michelle served as the Project Field Architect for the recently completed Teak Window Restoration project at the Salk Institute of Biological Studies. Other projects in her historic preservation portfolio include the Beverly Wilshire Hotel, Los Angeles County Hall of Justice, Los Angeles Harbor ‘Angel’s Gate’ Lighthouse, and Eames House. Michelle is an Associate AIA member, a LEED Accredited Professional, and is a member of the APTI Technical Committee for Modern Heritage. She completed her Bachelor of Arts in Architecture at the University of California, Berkeley.
Alice established Custance-Baker Conservation in 2018, a historic building materials conservation consultancy. Prior to entering solo practice, Alice was Materials Conservation Specialist with Page & Turnbull, Historic Buildings & Monuments Conservator with Nicolas Boyes Stone Conservation, and Building Materials Analyst with the Scottish Lime Centre Trust. As a Consultant to the Getty Conservation Institute Alice co-authored an annotated bibliography on the Conservation of Concrete Heritage. Alice has a Masters in Geology from the University of Edinburgh, U.K., undertaken in collaboration with the British Geological Survey and Historic Environment Scotland, with a focus on the deterioration of natural building stone, and has trained in stone conservation at the International Centre for the Study of the Preservation and Restoration of Cultural Property (ICCROM). Alice specializes in porous building materials assessment, analysis, and conservation, and has established the Stone Quarries Database, a resource for sourcing and matching historic building stone.
Alan has almost 20 years of preservation experience, ranging from hands-on restoration of medieval properties in the UK to his current role deploying emerging technologies for the non-destructive evaluation and measured survey of structures. As Director of Operations for GBG USA Inc, he leads the Los Angeles subsidiary of the UK-based forensic engineering company, taking care of business development whilst managing a range of technical preservation projects. With a background in engineering (University of Hertfordshire, UK, BEng. (Hons.) Mechanical Engineering) and expertise in data collection & analysis, Alan specializes in the documentation of the built environment, providing highly accurate and detailed construction arrangement and condition assessments. His notable projects include Hearst Castle in San Simeon, CA. Alan brings a broad network of professionals, a unique insight on preservation technology and an enthusiastic approach to educating the AEC industry.
Kelly is currently Project Specialist for the Earthen Architecture Initiative, Seismic Retrofitting Project at the Getty Conservation Institute (GCI). For the past 16 years, she has worked on preservation projects in the US and abroad including Turkey, Italy, Bulgaria, Hong Kong, and Taiwan in the private sector, at public agencies, and for academic institutions. At the GCI, she is responsible for the development of construction documents including the seismic rehabilitation of two adobe structures in Peru, as well as facilitating its implementation with the Ministry of Culture. Before the GCI, Kelly was Preservation Technical Specialist and Preservation Enforcement Planner at San Francisco Planning Department, Preservation Project Manager at The Presidio Trust, and Project Manager at Architectural Resources Group. She has an architecture degree from UC Berkeley and master's in historic preservation (architectural conservation) from the University of Pennsylvania.