Document describing the expanded monitoring program approach using existing regulations to define action levels for indoor air.
NYC-WTC_000140817Folder label: “B.Avaltroni EPA INDOOR AIR TASK FORCE”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Benchmark Development Approach
1) Expanded from ambient air monitoring program need to address long-term as well as acute/subchronic exposures
- Tiered Approach
Tier I - action level Tier II - review Tier III - clearance
- Used existing regulations/guidance where applicable
Examples:
NAAQS for Pb (1.5 ug/m^) - action level for indoor air
HUD Pb Standard for floors (40 ug/ft^) - action level for interior dust
Otherwise developed risk-based screening levels
NYC-WTC_000140817
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Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000140645
Documentation establishing Tier I, II, and III action levels for lead and other contaminants based on EPA and HUD guidance.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140647
Table defining action thresholds for lead in indoor air using NAAQS and background values to determine required cleaning measures.
1 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.911
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140819
Table defining Tier I, II, and III lead air concentration thresholds with actions ranging from aggressive cleaning to no further action.
1 shared topics · Same agency, volume and box · similarity 0.906
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164862
Document introduction describing a cross-agency group tasked with identifying contaminants and establishing health-based screening levels.
1 shared non-person entities · 1 shared topics · similarity 0.942
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000151128
Report establishing health-based screening levels for the indoor environment with cross-agency representation.
1 shared non-person entities · 1 shared topics · similarity 0.941
machine-extracted · confidence unavailable · Check page ↗1 shared non-person entities · 1 shared topics · similarity 0.911
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162222
EPA staff distributed an environmental laboratory report to federal and city agencies on May 15, 2002.
1 shared non-person entities · 1 shared topics · similarity 0.910
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000142716
Log of DEP activities coordinating with other agencies for street clean-up and determining road reopening status.
Similar document embedding; no shared entity or topic indexed. · similarity 0.900
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164784
Transmission of revised asbestos sampling results for residential samples collected November-December 2001.
1 shared non-person entities · 1 shared topics · similarity 0.898
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164830
DEP internal memo circulating draft EPA screening level standards for asbestos, fiberglass, and silica in indoor air and settled dust for agency comment.
1 shared non-person entities · 1 shared topics · similarity 0.896
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164732
Draft spreadsheet of asbestos sampling results from residential locations collected November-December 2001, circulated for review.
1 shared non-person entities · 1 shared topics · similarity 0.896
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
1 shared non-person entities · 1 shared topics · similarity 0.895
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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Notice instructing staff to preserve original WTC documents as potential evidence in future legal actions against the City.
Filed in the same folder
NYC-WTC_000140813
Meeting notice for task force discussion of Contaminants of Concern and benchmarks presentation scheduled for April 8, 2002.
Filed in the same folder
NYC-WTC_000140814
Document outlining the creation of a cross-agency group tasked with identifying contaminants of concern and establishing screening levels.
Filed in the same folder
NYC-WTC_000140815
Document detailing the methodology for identifying contaminants of concern and listing seven tentatively identified substances.
Filed in the same folder
NYC-WTC_000140816
Document explaining the exclusion of VOCs and other chemicals from the contaminant of concern list due to trace amounts.
Filed in the same folder