NYC-WTC_000210800

PEDNEAULT ASSOCIATES, INC. Tj NYCDEP - WTC z z ■<

o 631-467-8477 5-BORO SAMPLING o METALS IN AIR co § s o o ro [CALCULATION FOR OSHA ID121/125G - METALS IN AIR VIA CASSETTE FILTER (37MM MILLIPORE) & MOBILE VACUUM PUMPS jA= Concentration of Analyte in sample solation (p.g/tnl) or (mg/L) j

I ■D c CT o' jB=Concentration of Blank in sample solution (pg/ml) or (mg/L) ■D o O co o ■SSV" Sample Solution Volume ASSV" Analyte concentration x Sample Solution Volume AR= (A X SSV) - (B X BSV) I 3. CD 91 •BSV= Blank Sample Volume BBSV-Blank concentration x Blank Sample Volume AV I O o !rAB= Reagent Blank Concentration (^g/ml) or (mg/L) o c •rABSV" Reagent Blink Sainple Volume I 3 CD

Jd- DUution Factor (NONE) I iNO GRAVIMETIC FACTORS For the Trip Blank Analytical Value: j AV= Air Volume Sampled AR= (B X BSV) - (RAB X RABSV) I |AR=Analytical Result AV I lARR=Analytical Reportable Result in m^/m^ (rounded off to 3-sigma)

I A (mg/L> ^ SSVjmlS Ax SS^ = ASSV BSV(mL) BxBSVi'BBSV A§SV^BSSV=AR AV Liters ^AR/AV^ ^S ANALYTE ■ ’ ARR mg/n? >'S ! 0.092 100 9.2 0.068 100 618 2.4 30 0.08 Aluminum- Al 0.08 i 0.113 100 11.3 ■■“0.419 100 41.9 -30.6 30 -1.02 Antimony-Sb <0.01 67o^14 100 1.4 100 12.8 30 -0.38 Arsenic-As <0.01 ■q'OOZ JOO 0.2 ..-0002 100 ___________ 0^ 0 30 0 Barium-Ba <0.01 ! 100 0.1 0.003 100 0.3 -0.2 30 -0.0066667 Beryllium-Be <0.01 0.001 100 0.1 ■■■■‘d.oos 100 0.5 -0.4 30 -0.0133333 Cadmium-Cd <0.01 ■6‘519 100 51.9 ■■■■■oTaia 100 ___________ 31.3 20.6 30 0.6866667 Calcium-Ca 0.69 d’do9 100 0.9 100 1.6 -0.7 30 -0.0233333 Chromium-Cr <0.01 0,026 100 2.6 _0547, 100 4.7 -2.1 30 -0.07 Copper-Cu <0.01 ■o'oes 100 6.5 0.291 100 29.1 -22.6 30 -0.7533333 Iron-Fe <0.01 100 0.7 07044 100 aS -3.7 30 -0.1233333 Lead-Pb <0.01 100 5.1 ■■—oVdiT 100 4.1 1 30 0.0333333 Magnesium-Mg 0.03 ! 100 9.9 0?09 100 9 0.9 30 0.03 Manganese-Mn 0.03 o 100 100 30 Mercury-Hg <0.01 H 0.001 100 0.1 100 0.2 -0.1 30 -0.0033333 Nickel-NI <0.01 I ■6'.T6i" 100 16.1 0.272 100 27.2 -11.1 30 -0.37 Potassium-K <0.01 o'oST 100 4.1 ■—■'oTmI 100 14 -9.9 30 -0.33 Selenium-Se <0.01 So 'b"o^O3 100 ■“■0.066 0.3 100 0.6 -0.3 30 -0.01 Silver-Ag <0.01 o “i74^i‘9 100 ■“■i788‘4’ -1.55 Sodium-Na o !. 141.9 100 188.4 -46.5 30 <0.01 I -■6?66’6 100 -0.6 '“‘-67664 100 -0.4 -0.2 30 -0.0066667 Thallium-TI <0.01 o o o7o^29' 100 2.9 ■“■67628 100 2.8 0.1 30 0.0033333 Zinc-Zn <0.01 CO CR LAB ID #01100592-005 LO NYCDEP -ATLANTIC AV & SMITH STR. BROOKLYN