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 Lead XTeeeiiey Concentration Range of Range of Results Indoor Outdone Indoor Air Plenum Tndnor Outdoor Sample Cone. On Cone. On Cone. (3 samples per Indoor Cone. Outdoor Cone. (10 samples Readings Reading Surfaces Cone. Readings Reading Floor Window (mg/m'’) day) (11 samples (1 sample day) per day) (2 samples (1 sample Range of Cone. (1 sample (2 samples (1 sample O'g/'ft’) Sill (M^cm2) pee day) pee day) pee day) (2 samples pee per day) pee day) per day) (us/ft’) day) (ng/m’) (mg/m’) (mg/m’) (ng/m~) Floor FliMir Kim I)c:ecied Calet O.K.’ f ' flrl.ohbv 599.94 = 116 1 Belov ('mid: 0 000271 t. Beloi' reporting Kone deleele 0.00020 and O.O019 OX.'’ Kone of die metals in die 00'00.302 above liniils above limits aiialvt cal panel were pres ail er sample ofdcteetioii of dcueiioii levels abeve ilie limits of eleainip) detection. I' I 02 Ko silica found Ko silica found above deleelion abine deleclinn limit limit Belov (’uidaiiee I.evel 0.00041 7 in Belov reporting 2'’' Horn-lobby Ko silica found Kimi Dc.eeieil Kone deleeied Kone deleeied 0.000056 and 0 0010 Kone of die metals in die 0.000.’75 limit el 2 pg ■ 0.0 14 mg Ilf above delect ion above linnls above limits 0.0001" analytical panel were present at sample Room -260 , limit ol'dclcclion of deuetion levels ab.ive lite limits of 0 0135 nig.'in’ Non l.le'.eeted 0.000292 I.) 2"' Hour lobby- Ko siliea finind Kone detected Kone deleele The levels ofairborne metals did 0 000'002 0 0 123 Illg. Ill’ above ileleelion abii'.e limits abo\ e limits not exceed the liniils .ifdcleelion 111 any of the samples exeepi for ehroiniuin in the following localK'iis: r‘ lloor mainlobbv (0.0054.3 mg. in j. 2''-' floor lobby near 1'1 idge eiitiaiiec (0.'904713 iiig'iii ). roof air inlake (0.00638 nigmr'j. and blank sample (0 296 niicrograiiis per lllter. Belov reporting .3 samples were collected for dioxin limit of 2 pg ' The levels found m these samples were sample below Ilie KYSDOll guidelines of25 nc nr. 01 23.'02 Relov f-iiidmiLe T evel Meiciirv was not Reliiv' reporlimt Ko silica was liiiiiiil iihme lielcelioii liiiiil Kimi Dc:eeleil Kone detected Kone deleeied .3 wipe samples ( 1 blanki were The leve s of airbonie metals dnl deteeled in any of limit of 2 pg ■ above liniils above limits collected (sir dioxin. The levels found in not e.xeeed the liniils .ifdelcelion the siimples at a sample of detection of deteeti.>11 these samples are below the KYSDOll ill any of the samples exeepi for level grealei tliiill guideline of25 ng in'. cliioniiuiii V Inch was also foaiid in the blank ill Ilie blank. Non Defected

c; I TY_2 IMC10 0_0 0.3 2 9 2 9.5 2

NYC-WTC_000234633