NYC-WTC_000220576

z PEDNEAULT ASSOCIATES, INC. NYCDEP - WTC z o 631-467-8477 5-boro sampling o io METALS IN AIR

I |CALCULATION FOR OSHA ID121/125G - METALS IN AJR VIA CASSETTE FILTER (37MM MILLIPORE) & MOBILE VACUUM PUMPS ■D o c o I A-Concentration of Analyte in sample solution (pg/ml) or (mg/L) j CT o ro o' KJ j B=Concentration of Blank in sample solution (|ig/inl) or (mg/L) o ■D cn o jSSV= Sample Solution Volume ASSV= Analyte concentration x Sample Solution Volume AR= (A X SSV) - (B X BSV) 3. 03 *BSV=Blank Sample Volume BBSV=Blank concentration x Blank Sample Volume AV o JrAB= Reagent Blank Concentration (pg/ml) or (mg/L) o o c !rABSV= Reagent Blank Sample Volume 3 CD O J D= Dilution Factor (NONE) Ino GRAVIMETIC FACTORS For the Trip Blank Analytical Value: IAV= Air Volume Sampled AR= (B X BSV) - (RAB X RABSV) I AR=Analytical Result AV lARR=Analytical Reportable Result in mg/m’ (rounded off to 3-sigma)

I A(mg/L) SSV (mL) A X SSV = ASSV B (mg/L) BSV (mL) B X BSV = BBSV ASSV-BSSV = AR AV Liters AR/AV ANALYTE ARR mg/m’ 0.03 100 3 0.223 100 22.3 -19.3 30 -0.6433333 Aluminum- Al <0.01 ■■"O.b95"" 100 9.5 07d24 100 2.4 7.1 30 0.2366667 Antimony-Sb 0.24 ""O.b24"’ 100 2.4 b76o3 100 0.3 ____________ 2J^ 30 0.07 Arsenic-As 0.07 ■■"o.bbr”' 100 0.2 "■"b'4b2 100 40.2 -40 30 -1.3333333 Barium-Ba <0.01 '■"o.b6T"‘ 100 0.1 b'boT 100 0.1 0 30 0 Beryllium-Be <0.01 100 0 ‘■""-b’bbi ioo’ -0.1 0.1 30 0.0033333 Cadmium-Cd <0.01 ""0.282'" 100 28.2 ■""b'aie 100 31.6 -3.4 30 -0.1133333 Calcium-Ca <0.01 ■"■'o.boe'" 0.6 b"."o'b4 100 0.4 0.2 30 0.0066667 Chromium-Cr <0.01 ""o.b67"' 100 0.7 ..... b‘bo2 100 0.2 0.5 30 0.0166667 Copper-Cu 0.01 ""aoe”"' 100 6 .... b'TSg 100 13.9 -7.9 30 -0.2633333 Iron-Fe <0.01 100 0 ""‘""0.004 100 -0.4 0.4 30 0.0133333 Lead-Pb 0.01 “”0.053"" 100 5.3 ■""""b’bei" 100 6.1 -0.8 30 -0.0266667 Magnesium-Mg <0.01 ”"0.’0'26"” 100 2.6 """""b'b23 100 2.3 0.3 30 0.01 Manganese-Mn 0.01 o 100 100 30 Mercury-Hg <0.01 H 0.004 100 0.4 0.003 100 0.3 0.1 30 0.0033333 Nickel-NI <0.01 ■■"o'oes” 100 6.8 “o7583 100 58.3 -51.5 30 -1.7166667 Potassium-K <0.01

I o “'d"ooi“' 100 100 100 2.2 0-1 144.1 -0.008 ■b.boi" "2.626 100 100 -0.8 0.1 262.6 3 0 -118.5 30 30 0.1 Selenium-Se 0 Silver-Ag -3.95 Sodium-Na 0.1 <0.01 o 100 30 <0.01 I o o ■"d'boi"" 100 0.1 ..... "6 100 0 0.1 30 0.0033333 Thallium-TI 0.02 CO '"o.bis" 100 1.3 ■"o"."2"2"7 100 22.7 -21.4 30 -0.7133333 Zinc-Zn <0.01 CO CR LAB ID #01110052-001 LO NYCnFP . BROADWAY & 31 ST QUEENS