Appendix B outlining performance standards and cleaning requirements for historic building exteriors.
NYC-WTC_000093728–000093734Folder label: “LANDMARK INFORMATION”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
A cleaning system appropriate for a specific masonry material may not be appropriate for adjacent masonry mortar joints. The removal of paint/stain on mortar joints should be avoided if possible.
Reducing the strength of the removal agent and/or the pressure applied for removing the ,.paint/stain can minimize "clean spots" left onmasonry.
'Masonry surfaces should be tested with non-staining ph strips after removals are completed in order to ensure that the substrate has been adequately neutralized. Neutralizing a surface involves removing all chemical and/or cleaning agents from the fabric. .A substrate that has not been neutralized can lead to subsequent damage of the historic fabric.
Applied Paint (Signage) to Significant Interior Historic Fabric: If paint (signage) is applied to significant interior fabric (e.g. murals, mosaics, decorative metals) an experienced architectural and/or art conservator should be consulted regarding any treatment or removal. It is possible to successfully remove applied overpaint from even the most decorative or .fragile substrates.
Health, Safety, and Environmental Issues:
It is the responsibility of the Applicant to obtain all local, federal and state permits prior to the commencement of work and adhere to all local, state and federal laws with respect to the application and disposal of potential hazardous waste materials.
Sources:
AIC Ethics and Standards Committee. "AIC Code of Ethics and Guidelines for Practice." Revised August, 1994.
Grimmer, Anne E. "Dangers of Abrasive Cleaning to Historic Buildings." Preservation Brief Number 6. Washington, DC: National Park Service, 1979.
New York Landmarks Conservancy. Historic Building Facades: The Manualfor Maintenance and Rehabilitation. New York: John Wiley & Sons, Inc.,'1997.
Weaver, Martin E. "Removing Graffiti from Historic Masonry." Preservation Brief Number 38. Washington, DC: National Park Service, 1995.
Note: National Park Service Preservation Briefs, including those referenced in these performance standards, are available on the Internet; keyword Preservation Briefs.
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NYC-WTC 000093734
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NYC-WTC_000093852
Brief explaining risks of sandblasting and chemical treatments on historic building materials.
2 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.953
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000093788
Fax transmittal from the Mayor's Office regarding a March 2002 meeting with the building group.
5 shared non-person entities · Same agency, volume and box · similarity 0.918
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000093746
Letter from FEMA providing a list of historic buildings and recommended cleaning treatments for post-disaster recovery.
5 shared non-person entities · Same agency, volume and box · similarity 0.904
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000094043
Letter from FEMA providing a list of historic buildings and recommended cleaning treatments for post-disaster recovery.
5 shared non-person entities · Same agency, volume and box · similarity 0.897
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164903
Forwarded programmatic agreement documentation addressing post-disaster building cleaning procedures and eligible building list for recovery efforts.
5 shared non-person entities · similarity 0.932
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000150931
Cover fax from the Mayor's Office forwarding DEP documents regarding exterior clean-up to be reviewed before a meeting with building owners.
4 shared non-person entities · similarity 0.912
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000125098
Protocol document outlining air sampling and monitoring procedures for 130 Cedar Street.
4 shared non-person entities · similarity 0.899
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000111934
Document outlining regulatory compliance and follow-up visual assessments conducted by DEP at buildings near the World Trade Center.
1 shared non-person entities · 1 shared topics · similarity 0.888
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000107407
Permit application detailing background debris conditions and requirements for licensed contractors to clean interior surfaces.
2 shared non-person entities · 1 shared topics · similarity 0.887
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000143163
Application document outlining scope of work for building exterior cleanup in compliance with federal and state environmental regulations.
1 shared non-person entities · 1 shared topics · similarity 0.887
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140551
Draft contract scope for WTC dust cleaning south of Canal Street including asbestos sampling and HEPA vacuuming.
3 shared non-person entities · 1 shared topics · similarity 0.886
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140615
Contract establishing requirements for third-party asbestos monitoring and air sampling in residential buildings near the World Trade Center.
3 shared non-person entities · 1 shared topics · similarity 0.885
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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NYC-WTC_000093580
Archival reference document with minimal visible content related to WTC-era landmark information.
Filed in the same folder
NYC-WTC_000093581
Administrative record from the Landmark Information folder regarding the World Trade Center site.
Filed in the same folder
NYC-WTC_000093582
Administrative record from the Landmark Information folder regarding the World Trade Center site.
Filed in the same folder
NYC-WTC_000093583
Landmarks Preservation Commission notice withdrawing an application for alterations at 192 Broadway due to lack of landmark status.
Filed in the same folder
Permit for minor work issued by the Landmarks Preservation Commission for alterations at 55 Liberty Street.
Filed in the same folder