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VOC surrogate recovery data, Site 524, Sept-Oct 2001

Machine-extracted title · confidence 100%

Table of VOC surrogate recovery percentages for sample AD23606 from Site 524 processed in late September and early October 2001.

NYC-WTC_000000362–000000369

Folder label: “524 10/1 - 10/10/01

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NYC 9/11 Public Portal Document

User: Vannelli, Sandy Westchester Dept. of Labs & Research Date: 10/12/2001 Time: 10:32:45

Sample: AD23719 Analysis: SO_524 Volatile Organic Compounds-Reference Rec Units: ug Started: 09/28/01 13:56 Ended: 09/28/01 13:56 Analyst: WB Result source: manual entry Page: 1

1 Surr-1,2-DICHLOROETHANE-D• 5 .5 2 - Surr - 4-BROMOFLUOROBENZE 5.3 .5 3 Dichlorodifluoromethane 107.5 .5 4 Chloromethane 87.5 .5 5 Vinyl chloride _80 .5 _ 6_ Bromomethane 85 .5 7 Chloroethane 82.5 .5 8 Trichlorofluoromethane 85 .5 9 1,1-Dichloroethene 90 ,.5 -_--- 10 Methylene Chloride 87.5 .5 11 Methyl tert butyl ether 92.5 1.0 12 trans-1,2-dichloroethene 97.5 .5 13 1,1-dichloroethane 95 .5 14 2-butanone (MEK) 6 2.0 15 2,2-dichloropropane .5 16 cis-1,2-dichloroethene 100 .5 17 Chloroform 90 .5 18 Bromochloromethane 92.5 .5 19 _ ;1,2-dichloroethane 90 .5 20 Surr - TOLUENE-D8 5 .5 21 1,1,1-trichloroethane 100 .5 22 1,1-dichloropropene 102.5 .5 23 Carbon tetrachloride 97.5 .5 24 Benzene 97.5 .5 25 Trichloroethene 97.5 .5 26 1,2-dichloropropane 95 .5 27 Dibromomethane 100 .5 28 Bromodichloromethane _ 97.5 .5 29 Methyl iso-butyl ketone 110 1.0 30 cis-1,3-dichloropropene 120 .5 31 Toluene 95 .5 32 trans-1,3-dichloropropene 127.5 -' .5 33 1,1,2-trichloroethane 95 .5 34 Tetrachloroethene 97.5 .5 35 1,3-dichloropropane 97.5 .5 36 Dibromochloromethane .102.5 2.0_ _ 37 Chlorobenzene 92.5 .5 38 1,1,1,2-tetrachloroethane 100 .5 39 Ethylbenzene 97.5 .5 40 P & M-xylene 96.25 .5 41 0-xylene 105 .5 42 Styrene 105 .5 43 1,1,2,2-tetrachloroethane 95 .5 44_Bromoform 105` 2.0 45 lsopropylbenzene ,100 5 46 ~1,2,3-trichloropropane 195 .5 47 N-propylbenzene '92.5 .5

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NYC-WTC_000000364Source: NYC Law Department, mirrored locally

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