San Antonio Missions: Preservation Issues in the 21St Century Page 1 a Summary and Analysis of the 2016, 2017, and 2018 Preservation Workshops
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st San Antonio Missions: Preservation Issues in the 21 Century Page 1 A Summary and Analysis of the 2016, 2017, and 2018 Preservation Workshops SAN ANTONIO MISSIONS Preservation in the 21st Century Prepared by: The University of Texas at San Antonio Center for Cultural Sustainability—a unit of the College of Architecture, Construction and Planning Project Sponsor: Mission Heritage Partners November 2019 Introductionl San Antonio Missions: Preservation in the 21st Century Page 2 A Summary and Analysis of the 2016, 2017, and 2018 Preservation Workshops Project Staff Principal Investigator William Dupont Editorial Tracie Quinn Graduate Students Carolina Dominguez Perez Cristina Gonzalez Pope Marcus Huerta Alesia Hoyle © 2019 UTSA Center for Cultural Sustainability 501 César E. Chávez Blvd. San Antonio, TX 78207 IntroductionL San Antonio Missions: Preservation in the 21st Century Page 3 A Summary and Analysis of the 2016, 2017, and 2018 Preservation Workshops Introduction Held each May for three years, the San Antonio Missions Preservation Workshops engaged local, national, and international experts in topics of materials conservation, Spanish Colonial masonry, cultural resource management, documentation, chemistry, history, geology, architecture, and architectural history. Participants in the four-day events included representatives from government entities at the local, state, and federal levels; representatives from the Archdiocese of San Antonio; academics from throughout the United States; and professional consultants from the private sector. Additionally, the “next generation” of preservationists was represented, as workshop participants included graduate students and members of the Texas Conservation Corps. From San Antonio residents who have spent 50 or more years working with the missions, to non- Texans seeing them for the first time, participants’ familiarity with these structures ran the gamut— creating a healthy blend of insider and outsider points of view. In preparing this report, the UTSA Center for Cultural Sustainability (CCS) aims to document and synthesize this cross-section of knowledgeable voices into broad-scope recommendations for guiding future preservation practices at San Antonio Missions National Historical Park. This is not a technical report on materials conservation; nothing in this report should be used as a guide to treatment. The report is a distillation of conversations to indicate what transpired, hopefully leading to establishment of best practices written specifically for the San Antonio Missions. The workshops—which were sponsored by the National Park Service, the UTSA Center for Cultural Sustainability, the Texas Historical Commission, and Los Compadres de San Antonio Missions National Historical Park (now Mission Heritage Partners)—were held May 23–26, 2016; May 22–25, 2017; and May 21–24, 2018. Additionally, the final workshop in 2018 was an official San Antonio 300 Tricentennial event. IntroductionL San Antonio Missions: Preservation in the 21st Century Page 4 A Summary and Analysis of the 2016, 2017, and 2018 Preservation Workshops Table of Contents INTRODUCTION .............................................................................................................................. 3 Section One: Summary and Analysis .......................................................................................................... 7 RECOMMENDATIONS FOR BEST PRACTICES GOING FORWARD .................................................... 8 Section Two: Review of 2018 Events ......................................................................................................... 11 List of Participants .......................................................................................................................... 12 2018 PLENARY SESSION ............................................................................................................ 13 Overview of Speakers .................................................................................................................... 13 “From Wood to Stone: The Evolution of San Antonio’s Missions” By Dr. Jesús F. de la Teja, Texas State Historical Association .................................................... 14 “Water, Water, Everywhere!” By Carolyn Peterson, FAIA, Principal at Ford, Powell & Carson ............................................... 16 “Documentation of Historic Masonry Preservation at San Juan (Puerto Rico) National Historic Site” By Felix Lopez and Elvis Babilonia, NPS .................................................................................... 21 2018 ROUNDTABLE DISCUSSIONS .............................................................................................. 27 “Water, Moisture Management, and Microbial Communities” Moderated by Judy Jacob, NPS; and Jim Speck ......................................................................... 27 “Documentation of Historic Structures” Moderated by Felix Lopez, NPS; Elvis Babilonia, NPS; and Dr. Angela Lombardi, UTSA ........... 32 “Stone and Stucco Conservation” Fran Gale, UT-Austin; and Pam Rosser, Alamo Trust, Inc.......................................................... 36 2018 HANDS-ON WORKSHOPS .................................................................................................. 42 “Moisture Management” Moderated by Judy Jacob, NPS; Jim Speck; and Dr. Angela Lombardi, UTSA ........................... 42 “Documentation” Moderated by Sara Rodríguez Jimeno, Architectural Fellow, UTSA; Assisted by Alejandra Rodriguez Guajardo, student, UTSA ..................................................... 43 “Masonry” Ramon de Jesus; Fran Gale, UT-Austin; and Pam Rosser, Alamo Trust, Inc. ............................ 48 contentsL San Antonio Missions: Preservation in the 21st Century Page 5 A Summary and Analysis of the 2016, 2017, and 2018 Preservation Workshops Table of Contents (cont.) Section Three: Review of 2017 Events ....................................................................................................... 53 List of Participants .......................................................................................................................... 54 2017 PLENARY SESSION ............................................................................................................ 55 Overview of Four Speakers ............................................................................................................ 55 “Principles of Treatment” By Dr. George Skarmeas, Preservation Design Partnership (PDP) ............................................ 56 “Documenting Historic Buildings in Colonial Quito, Ecuador” By Dr. Susan V. Webster, College of William & Mary ................................................................ 59 “Geology of the San Antonio River Basin” By Dr. Tom Ewing, Yegua Energy Associates ............................................................................. 64 “Masonry Treatments: Long-term Testing, Results, and Lessons Learned” By Judy Jacob, National Park Service ......................................................................................... 67 2017 ROUNDTABLE DISCUSSIONS .............................................................................................. 72 “Principles of Treatment” Moderated by William Dupont, UTSA ....................................................................................... 72 “Architectural History—Documentation and Wall Analysis” Moderated by Dr. Angela Lombardi, UTSA; and Jake Ivey, NPS (retired) ................................. 77 “Stone Conservation and Stone Sourcing” Moderated by Dr. Tom Ewing, Yegua Energy Associates, Fran Gale, UT-Austin; and Dr. Steve Tomka, Raba Kistner, Inc. ................................................................................... 82 2017 HANDS-ON WORKSHOPS .................................................................................................. 84 “Missions Geology Field Trip” Moderated by Dr. Tom Ewing, Yegua Energy Associates; and Dr. Steve Tomka, Raba Kistner, Inc. .................................................................................. 84 “Mortar Workshop” Moderated by Pam Rosser, Alamo Trust, Inc.; and Rachel Adler, NPS ..................................... 85 “Architectural History Workshop” Moderated by Dr. Angela Lombardi, UTSA ............................................................................... 89 contentsL San Antonio Missions: Preservation in the 21st Century Page 6 A Summary and Analysis of the 2016, 2017, and 2018 Preservation Workshops Table of Contents (cont.) Section Four: Review of 2016 Events ......................................................................................................... 91 2016 PLENARY SESSION ............................................................................................................ 92 Overview of Four Speakers ............................................................................................................ 92 “The Authenticity of Historic Places” By William A. Dupont, UTSA ...................................................................................................... 93 “Preserving the Preservation Trades” By Naomi Kroll, National Park Service ....................................................................................... 95 2016 ROUNDTABLE DISCUSSIONS .............................................................................................. 97 “Documentation Techniques” Moderated by Dennis