1 determining and communicating environmental requirements doris a. hamburg national archives and...
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Determining and Determining and Communicating Environmental Communicating Environmental
RequirementsRequirements
Doris A. HamburgDoris A. Hamburg
National Archives and Records AdministrationNational Archives and Records Administration
March 16, 2006March 16, 2006
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High RiskHigh Risk
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Conservators in Conservation Lab
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Check for the Purchase of Alaska
Louisiana Purchase TreatyApollo 11 Flight Plan
Original Design of the Great Seal of the United States (1782)
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Winslow HomerKey West, Hauling Anchor, 1903 National Gallery of Art
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Voting Rights Act
President Lincoln
President Roosevelt’s Day of Infamy speech
following Pearl Harbor
Gift to President Reagan from President of Algeria
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Ideal
Practical Low cost
Short term goals
High Risk Long term goals Low Risk
Most bang for the buck
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Goals
• What are we trying to achieve?
• What are our goals in creating the environment for our collection?
• How long do we wish to keep the collection items? Value of the items?
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These strips are next soaked in water to remove the sugar
“…a sworn foe of oblivion” Cassiodorus, 6th century
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List of Candidates30 B.C.-640 A.D. Egypt
Photo courtesy Duke University
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The Collection
What are the materials made of?
What are the stability and vulnerability of those materials?
What is their condition?
What are the needs of the collection so it will be preserved?
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Fig. 4. Percent relative humidity versus temperature Isoperm diagram displaying environmental conditions unsuitable for paper. Relative humidities greater than 65% subject paper to hazards of mold growth and foxing; values less than 20% RH reduce paper flexibility to potentially hazardous levels.
Cellulose Acetate DeteriorationPhoto courtesy, www.ameshistoricalsociety.org
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Rag paper
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Alexander CalderBig Bird, 1937 Photo courtesy Calder Foundation, New York.
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Presidential Gifts
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• Does the collection contain a mix of media with diverse chemical and mechanical characteristics and needs?
• What are the condition of the materials?
• How much of the useful life has already been used up?
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• What is the level of access?
• How will the materials be used?
• Are there cultural considerations?
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• What is the geographic and climatic setting?
• Is there an existing structure that affects potential options?
• What type of facility is involved: archives, vault, research library, historic house, warehouse?
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Fig. 4. Percent relative humidity versus temperature Isoperm diagram displaying environmental conditions unsuitable for paper. Relative humidities greater than 65% subject paper to hazards of mold growth and foxing; values less than 20% RH reduce paper flexibility to potentially hazardous levels.
D. Sebera-Isoperm Diagrams
11001000 0.10
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Fig. 7. Isoperm diagram displaying set points and ranges illustrative of those proposed for paper document
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Environmental Guidelines for the Storage of Paper Records
William K. Wilson
NISO TR01-1995National Information Standards Organization
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NARA scientists performing research and materials testing
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How Do We Proceed?• We need to know our goals for preserving our
collections.
• We need to know what the collections need to satisfy the goals for preserving the collections
We need to consider in our long term planning the fact that as collections deteriorate they lose “value” and the costs to preserve increase
We need to consider that the storage environment has the greatest potential to minimize preservation costs over the long term
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• We need to acknowledge that there are limitations to energy and to budgets
• We must weigh the competing demands for resources with our priorities
• We need to know how building architecture and environmental systems can work together in an interrelated and supportive manner to create the most cost effective storage environments for the collections we are preserving
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We need to bring all these considerations together to engage in a dialogue, working as a team that includes engineers, architects, conservators, archivists, curators, project managers and others.
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Creative, cost effective solutions Dialogue Balance • the goals and priorities for
the collections• the risks to collections and
buildings• realities of budgets and
energy
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