NYC-WTC_000220576

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o 631-467-8477 5-BORO SAMPLING o io [CALCULATION FOR OSHA ID121/125G- METALS IN AIR VIA CASSETTE FILTER (37MM MILLIPORE) & MOBILE VACUUM PUMPS METALS IN AIR co

I ■D o c o jA= Concentration of Analyte in sample solution (pg/ml) or (mg/L) CT o ro jB=Concentration of Blank in sample solution (|ig/ml) or (mg/L) o' ro ■D o o cn j.SSV= Sample Solution Volume ASSV= Analyte concentration x Sample Solution Volume AR= (A X SSV) - (B X BSV) 3. CD 03 ■ BSV=Blank Sample Volume BBSV= Blank concentration r Blank Sample Volume AV o !rAB= Reagent Blank Concentration (pg/ml) or (mg/L) o o c ! RABSV= Reagent Blank Sample Volume 3 CD 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) IAR=Analytical Result AV lARR=Anj^tical Reportable Result in m^/m’ (rounded off to 3-sigma)

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’ 0.083 100 8.3 0.223 100 22.3 -14 30 -0.4666667 Aluminum- Al <0.01 ■"b*b*53*" 100 5.3 0.^ 100 2.4 2.9 30 0.0966667 Antimony-Sb 0.1 "b'.'o'i'T" 100 1.4 o.bo's’ 100 0.3 1.1 30 0.0366667 Arsenic-As 0.04 ■"0.003*** 100 0.3 0.40'2' 100 40.2 -39.9 30 -1.33 Barium-Ba <0.01 "o.'o'oi''' 100 0.1 b'.‘o'oi' 100 0.1 0 30 0 Beryllium-Be <0.01 100 0 100 -0.1 0.1 30 0.0033333 Cadmium-Cd <0.01 ■"'0.*3*53**' 100 35.3 0.316 100 31.6 3.7 30 0.1233333 Calcium-Ca 0.12 ■"biooe" 100 0.6 b.'do"4" 100 0.4 0.2 30 0.0066667 Chromium-Cr <0.01 ■''0.062*"' 100 0.2 0.^2 100 0.2 0 30 0 Copper-Cu <0.01 ■"'0.089*" 100 8.9 b.’i'a'g 100 13.9 -5 30 -0.1666667 Iron-Fe <0.01 ■'""oiDOS'' 100 -0.3 '""-b'*o'6*4* 100 -0.4 0.1 30 0.0033333 Lead-Pb <0.01 "0'0'55"" 100 5.5 ■***"o.b'6i' 100 6.1 -0.6 30 -0.02 Magnesium-Mg <0.01 "'bib'3'"' 100 3 ‘o '.”d23 100 2.3 0.7 30 0.0233333 Manganese-Mn 0.02 o 100 100 30 Mercury-Hg <0.01 H 0.003 100 0.3 0.003 100 0.3 0 30 0 Nickel-NI <0.01 K '0.583 I to 0.l‘25 100 12.5 100 58.3 -45.8 30 -1.5266667 Potassium-K <0.01

I o 0”0'02 ■"1*894 100 100 100 0 0.2 189,4 'o.'o'oi" ‘ -0^68 2.626 100 100 100 -0.8 0.1 262.6 0.8 0.1 -73.2 30 0.0266667 Selenium-Se 30 0.0033333 Silver-Ag 30 -2.44 Sodium-Na 0.03 <0.01 <0.01 o Io o.ooi' 100 0.1 100 0 0.1 30 0.0033333 Thallium-TI <0.01 o *0.227 to ’o'oie 100 1.6 100 22.7 -21.1 30 -0.7033333 Zinc-Zn <0.01 co co cn LAB ID #01110052-002 co NYCDEP-138TH & 3RD AVENUE BRONX ^■/ CH cq/MVrnCD l_l a 1 nnco