NYC-WTC_000232844

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 fniiiid None deleeied Ntme deleeied 0 0013 to 0.00044 0 020 Cbroiiiiuiii — Ir.iii - 0.0030 0.000.32.1 limit 01 2 iig sainple above deleclion above deleclion above linnls above limits 0.0002 to limit limit ol'detection of detection 0 0003 Below (.in dance Level I |.•27.•|■)l No siliealonnd Nd silica found Clironiiuin = Below limil of above deleclion above deleclion abo". e linnls above limits 0.00021 to deleclion limit limit of detection of detection 11 2801 Below Below reporting Null DiiX'cted 0.00015 lu 0.00050 0.0015 Cri-idanee (Tiadanee limit ul'2 pg sample 12J 01 Below reporting 0.000065 10 0.0010 Levels of airborne metals did not limit of 2 pg ■ 0.00016 exceed the Liiiiii cf Deleclion sample except fcr the hl.ink sample with trace amount ol'ehromiuni. ndiiV' Ciiidain:; Level Non De'.eeted -01 No SI lica found No silica found None detected None detected above detection abnee Jeleelinii abo'. e linnls limit limit ol'detection of detection Below (hiidaiiee I evel Non Be-ecied 12. 1.3.01 Mcicurv was not Below rejmtliiig No silica found Nd silica found None detected None deleeied 0 00006? lo (10016 Cbrnniiiiin detecled in any oi' limit of 2 pg ■ above deleclion above delect ion above linnls above limits 0.00016 0.000,106 the samples at a sample limit limit ol'detection ol'detection nig in Intind in Lwel crealei than in a 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: Tolal OlherR None deleeied 0 000065 Id 0 0016 None of the niefds in the 0000280 above deleeli Ilvdroearbons above limits 0 1)0016 aiialvfeal panel were present at limit 0.061 ppm of detection levels above Ilie limits of

12'26 01 Belo" Cuidaiiee Level 0.000292 to Below repoHiiig No silica loiind No silica loimd Non De'.eeted None detected Aceloiie 0.000065 Io 0.0016 None of the metals in the 0.000.302 limit of 2pg.' above detection above detection above limits 0 114 ppm 000016 anaht cal panel were present at sample limit limit ol'detection Hexane levels above Ilie limits cl' 6 062 ppm deleclion.

C; I TY_2 IMC10 0_0 0 313 86 2 4

NYC-WTC_000232849