NYPD Access Policy for Building Owners and Contractors Oct 2001

Z Z o . - o g kr 5S o Liberty Mutual / ATC Measurement Data I U o c o CT o Weekly Summary o' JX- T] (O o G> 3- CD #of Highest Highest OSHA ACOIH Highest Result Job With Highest tofNQs %NQ Comments Q]

Weak of: Agent Class Samples Analyses Analyte Result PEL TLV % of OEL Exposure O o o 11/2»01 Total DusWIeais 17 340 Cadnttum 2.8 ug^ 5ugftn3 fOugltnS 88% df PEL Torch Cutter 188 58% c 11/2Srt31 Reap. DusVSinca 13 39 Quartz O.Q16nigm o.lmglmS' O.OSmg'rra 36% of TLV Spotter 27 69% 3 11/2S«1 ArorrtaSes 7 28 Toluene 0.0038 ppm 200ppm 50 ppm 0.0076* of TLV Torch Cutter 26 93% CD 11/26/01 Aldehydes 3 21 Formaldehyde 0.010 ppm 0,75 ppm 0.3 ppm (Celling) 1.3% of PEL Backhoe Operator 15 71% 3 11fl»01 PAHs 8 96 Total PAHe 6.8 200uglm3 a»ugim3 3.4% of PEL Qrappier Operator 75 78% 11/26/01 Asbestos 24 24 Ftoers 0.033 f/cc 0.1 »cc 0.1 f/cc 33% of PEL Spotter 17% 11/2»01 Adds 6 38 HydrofiuoricAolti 0.01 ppm 3ppm 3ppm(CslIng) 0.33% of TLV QrappierOperator 59 164% 11/25/01 Ozone 2 2 N/A AO Too Low to Quantify* 2 100% 11/25/01 Carbon Monoidde (TWA) 26 28 Carbon Monoxide 33 ppm 50 ppm 25 ppm 132% of TLV (abbreviated Hagman 15 58% 1 peak over NIOSHCefIng Of 200 8ampla-2hr8,8mln) ppm (Qrapptef Operatojj Totals: 104 612

12/1/01 Total DusVMetals 10 202 Arsenio 1u9/m3 i0ug/m3 10u^m3 10% of PEL Torch Cutter 122 80* 12/1/01 Resp. DusVSIIca 8 24 Respirable Dust 0J4mg/m3 Smg/mS Smyrna 11%otTLV Eqilpment Operator 19 78% 12/1/01 Aromatics 12 48 Benzene 0.0032 ppm ippm 0.5 ppm 084% of TLV Equlpmenf Operator 31 65% 12/1/01 Aldehydes 6 42 FomtaldBhyde 0.017 ppm 0.75 ppm 0.3 ppm (Calling) 23% of PEL Equipment Operator 29 68% 12M/01 PAHs 8 96 Total PAHS 17ug/m3 200u8/ra3 200 ugm 8.5% of PEL Torch cuter 52 54% 12M/01 Asbestos 26 28 Fibsrs 0.048 0.1 f/cc aiffcc 48% of PEL Spotter 5 18% 12/1X)1 Adds 6 36 SuJuioAcId 0.059 1 mgftTiS 1 n^AnS 5.8% of PEL Grappler Operator 31 88% i2n/oi Ozone 8 8 N/A AI Too Lowto Quantity* 8 100* i2n/oi Carbon Monoxide (TWA) 18 18 Carbon Monoxide 5ppm SO ppm 25 ppm 20% of TLV Torch Cultar 14 78%

1211/01 Hydrogen Sulfide 8 8 Hydrogen SuBde 16 ppm 20 ppm (Ceiling) 10 ppm 160% of TLV (Area Sample) SW Comer, near south bridge 5 63* 12fl/01 Diesel Ftme 11 11 Inorganio Carbon 0.078 3.5 mghiS 3.Smgrm3 22% of PEL Torch Cutter 9% Totals: 108 608

HsSSi

The PH. for quartz Is delormlned by the formula PEL=10 mg*m3 / (% quartz +2). Por Custs with Mgh quartz content this works out to be a quartz concentration of approximately 0.1 mgrrnS.

■OEL'=‘ocewatlonal exposure Smif. A generic term encompassing PELS, TLVs and other workplaee exposure limits.

•NQ"=“not quantifiable*. Substance was was not present In sufficient quantity in ths sample ts report a firm value tor the concentration. AI quanafloation levels tor toe sampling methods used are wel below occupational exposure Ms.

The area samples tor hydrogen sutode were taken near suspected soizees and were not representativo of worker exposure.