NYC-WTC_000232127

NYC 9/11 Public Portal Document

Part II - Environmental Community Monitoring Plan 133-135 Greenwich & 21-23 Thames Streets Airtek Project 05-0701 - Rev 2 September 16, 2005

Table A-1 - Measurement Quality Objectives - Parameter PMIO (Dichotomous Sampler) Requirement Frequency Acceptance Criteria Reference Information/Action Reporting Units All data Pg''m3 40 CFR, Pt 50.7

Filter Checks Visual defect check Filter All filters See reference Vol II, MS 2.10.4 Discard any defective Integrity filters Collection efficiency Purchase 99% 40 CFR, Pt 50, Integrity Specification ± 5 |ag/m3 App M, S 7.2 As measure by DOP test Alkalinity <25.0 (ASTM-2988). Reject Filter Conditioning All filters microequivalents/gram shipment. Equilibration time 40 CFR, Pt 50, Following 2 months storage Temperature range at least 24 hours App M, S 9.3 at ambient temp and Temperature control 15 to 30“ C 4 CFR, Pt 50, App relative humidity. Humidity range ±3C M, S 7.4 Repeat equilibration Humidity control 20 to 45 % relative humidity Keep thermometer in ± 5 % relative humidity balance room and record temperahire daily.

Keep hygrometer in the balance room and record humidity daily. Equipment Sampler Purchase specification 40CFR, Pt 53.9 Purchase Flow rate transfer specification 40CFR, Pt 50, AppM, S 7.3 standard Purchase Analytical balance specification 40CFR, Pt50, AppM. S7.5 Purchase Vol II, MS 2.10.4 Mass reference standards specification Vol II, MS 2.10.4 Detection Limit The lower limit of the mass EDE Not applicable Not applicable 40 CFR, Pt 50, concenh ation is determined App M, S 3.1 by the repeatability of filter tare weights, assuming the nominal air sample volume for the sampler. Sampler Calibration 40 CFR, Pt 50, Adopt new calibration Flow control device App M, S 7.1 curve if no evidence of On installation, after <4% difference from Vol II, MS 2.10.2 damage, otherwise replace. repairs, after out-of- manufacturers spec and limits flow check actual 40 CFR, Pt 50, Elapsed time meter App M, S 7.1 Adjust or replace. On receipt and 1/6 months ± 15 min 40 CFR, Pt 50, Flow-rate transfer App M, S 8.2 Checked against NIST- Standard Periodically traceable primary standard. ±2% over the expected range Vol II, MS 2.10.1 of ambient conditions Vol II, MS 2.10.1 Balance Calibration 1/year Vol II, MS 2.10.4 Calibrate and maintain according to the manufacturer’s recommendations.

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CITY_DEP_WORBY_CANNATA_SUBP_000087282

NYC-WTC_000232163