NYC-WTC_000210784

NYC 9/11 Public Portal Document I.' PEDNEAULT ASSOCIATES, INC. i ' NYCDEP - WTC 631-467-8477 5-BORO SAMPLING METALS IN AIR ' ICALCUI^ON FOR OSHA ID121/125fe METALS IN AIR VIA CASSEITE FILTER (37MMMILUPORE) & MOBILE VACUUM PUMPS jA«= Concentration of Analyte in sample solution(pg/ml) or («ng/L) jB=Concentration of Blank in sample solution (pg/ml) or «I i •SSV- Sample Solution Volume ASSV» Analyte concentration X Sample Solution Volume AR= (A X SSV) - (B X BSV) I ■ BSV-Blank Sample Volume BBSV=BIank concentration x Blank Sample Volume AV I !rAB- Reagent Blank Concentration (pg/ml) or (mg/L) !rABSV“ Reagent Blank Sample Volume I JD- Dilution Factor (NONE) Ino GRAVIME^G FACTORS 1 I For the Trip Blank Analytical Value: AR= (B X BSV 1 - (RAB X RABSV) I IAV= Air Volume Sampled lAR-Analytical Result AV I IARR=AnaJ^Ical Rej>6rtable Result in tng/th^ J (founded off to 3-sigma)

I A (mg/L) SSV® jOBSW :B5V(mL) assv-bssvSar AVLiteri •AR/AV' “ANALYTE? WARlRmg^^ i 0.096 100 9.6 0.073 100 7.3 2.3 30 0.0766667 Aluminum-Al 0.08 I 0.071 100 7.1 “b’b’iT 100 1.1 6 30 0.2 Antimony-Sb 0.2 I ""0'055 5.5 "0.002 100 0.2 5.3 30 0.1766667 Arsenic-As 0.18 I 100 ‘""6?bb'2 100 0.2 "0.002 100 0.2 0 30 0 Barium-Ba <0.01 ■""o?boi 100 0.1 100 0 0.1 30 0.0033333 Beryllium-Be <0.01 ■""o?bb’2 100 0.2 "b'boT 100 0.1 0.1 30 0.0033333 Cadmium-Cd <0.01 ’o.’^ 100 40 "b‘.273 100 27.3 12.7 30 0.4233333 Calcium-Ca 0.42 0.01 100 1 "0.005 100 0.5 0.5 30 0.0166667 Chromium-Cr 0.02 ■""6?bTi 100 1.1 "b’obb 100 0.9 0.2 30 0.0066667 Copper-Cu <0.01 ■■""aie? 100 16.7 "0.036 100 _____________ 3.6 13.1 30 0.4366667 Iron-Fe 0.44 !■ ■■"'6?bi'7 100 1.7 "b'.bo7 100 St 1 30 0.0333333 Lead-Pb 0.03 I.I "' ” 0?084 100 8.4 "b'b57 100 5.7 2.7 30 0.09 Magnesium-Mg 0.09 I ■""6?bT3 100 1.3 "b'.bo5 100 0.5 0.8 30 0.0266667 Manganese-Mn 0.03 o 100 100 30 Mercury-Hg <0.01 H 0.001 100 0.1 -0.001 100 -0.1 0.2 30 0.0066667 Nickel-NI <0.01 1"^ "■oj'42 100 14.2 ■0.091 100 9.1 5.1 30 0.17 Potassium-K 0.17 I—i s ■■"aose 100 8.6 -b'boi' 100 -0.1 8.7 30 0.29 Selenium-Se 0.29 o '’'-0?001 100 -0.1 ^'002 100 -0.2 0.1 30 0.0033333 Silver-Ag <0.01 o "mi? o I ■""L9O4 I. 100 190.4 100 141.7 48.7 30 1.6233333 Sodium-Na 1.62 Io I "■o?6o4 100 0.4 -0.001 100 -0.1 0.5 30 0.0166667 Thallium-TI 0.02 o ! '■"aoaB 100 2.6 ’0.031' 100 3.1 -0.5 30 -0.0166667 Zinc-Zn <0.01 CO CR I—i LAB ID #01100376-003 O CO NYCDEP - CENTRAL PK NO & LENOX-NYC r-/ cil pq/MVrnPP-l-IA7K< AT/h^ni riA-37e vie

NYC-WTC_000210789