NYC-WTC_000234627

NYC 9/11 Public Portal Document

STUYVESANT HIGH SCHOOT, LEAD-IN-WIPE-DUST MERCURY PCB’S SILICA (RESPIRABLE FIBERGLASS HYDROCARBONS DIOXINS WIPE SAMPLE METALS SAMPLE DUST) Date #nf lead T-ead XTeeeiiey Concentration Range of Range nf Results Indoor Outdone Indoor Air Plenum Tndnor Outdoor Sample Cone. On Cone. On Cone. (3 samples per Indoor Cone. Outdoor Cone. (U) samples Readings Reading Surfaces Cone. Readings Reading Floor Window (mg/m'’) day) (11 samples (1 sample day) per (lay) (2 samples (1 sample Range of Cone. (1 sample (2 samples (1 sample O'g/'ft’) Sill (M^cm2) per day) pee day) pee day) (2 samples per per day) pee day) per (lay) (us/ft’) day) (ng/m’) (mg/m’) (mg/m’) (ng/m') II 20. 01 0.000170 I.) Belov' reporliin; No silica found Nd silica fuinid None deleeied None deleeied 0 0013 IO 0.00044 0 020 Cbroiiiiuiii — Ir.iii - 0.0030 0.000.32.1 limit 01 2 iig sainple above deleelion above deleelion above linnls above limits 0.0002 to limit limit ol'detection ofdeteelion 0 0003 Below (.in dance Level I |.•27.•|■)l No silica lonnd Nd silica found Clironiiuin = Below limil of above deleelion above deleelion above linnls above limns 0.00021 10 deleelion limil limil of detection of detection 11 2801 Below Below reporting Null DiiX'cted 0.00015 lu 0.00050 0.0015 Cri-idancc (Tindanee limit of 2 pg sample 12J 01 Below reporting 0.000065 to 0.0010 Lewcls orairborne metals did not limit of 2 pg ■ 0.00016 e.vcced the Liniii crDclcclioii sample except for the blank sample with trace amount ol'chromiuni. ndiiV' Ciiidain:; Level Non De'.eeted -01 No SI lica found \n silica found None detected Lone detected above detection abuse Jeleelinii abo'. e limits limit limit ol'detection of detection Below (hiidaiiee I evel Non Be-ecied 12. 1.3.01 Meicurv was not Below rej,oiling No silica found Nd silica found None detected None delected 0 00006? to (10016 C'liruniinin deteeled in any oi' limit of 2 pg ■ above deleelion above deleelion above limits above limits 0.00016 0.000,306 the samples at a sample limit limil ordeleclion of deleelion nig in Intind in Lwel greater than in ;; blank lobby. Blank 0.026 uiierogiains per niter 12.19 1)1 Below (-uidance Level Non Deecred I2 2().'f)l 0 000333 I.) Relow reporliin: No silica found Tolal OlherR None deleeied 0 000065 Id 0 0016 None of die niclals in the 0 000280 above detection above deleeli Ilvdrocarbons above limits 0 1)0016 aiialvfcal panel were present at limit limit 0.061 ppm of detection levels above Ilie limits of

12'26 01 Belo" Cuidaiiee Level 0.000292 tj Below repoilmg No silica loiiiid No silica loimd Non De'.eeted None detected Aceloiie 0.000065 Io 0.0016 N one of the metals in the 0.000.302 limit of Ipg ■' above detection above detection above limits 0 114 ppm 000016 anaht cal panel were present at sample limit limit ol'detection Hexane levels above the limits of 6 062 ppm deleelion.

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NYC-WTC_000234632