NYC-WTC_000232046

NYC 9/11 Public Portal Document

I TRC Field Sample No. I Sample No. I Samolira Location I Collection Start Date I Sample Volume (m^) I Analyte I Analytical Melhcd I Lab I Lab Sample Receipt Date Respirable Silica Concentration (ug/m3) I Exceeds laroet Exceeds ERA |commenls~j Air Quality Site Specific Levels Trigger Levels iSILICA-S I 1-3/8/06 COCI SouthweaArea iadewaikbridge level) 3/8/06 Silica' NIUSH 7500 XHJ itMSL 3;io;o6 NC SILIC'A-Sf2-3/8/d6 JSyupieaik'Ar'e'ajiidew^ 3/8/66 'N'lbsH'dddd'xRD 'i'ems'l " 's'/io/oe.............. Nc

'I I s'lLiCA'stYs/’s’/d’e"' Nort'hwea Area (areet I evel) ' s/e'/'o's'' Silica 'niosh 75'0'0'x'rd'Bmsl ' '3rYo'/6's.............. Nc isil ICA-RT5-3/8/n6 iFIrahoiisA #1 0 (roof level) 3/8/06 Silica MOSH 7500 xm IFIUISI 3,'in,06 Nc SILICA-Sfl'c^dwds" 'iNortYsid'eSidewalk'BnBge.............................................. "3/8/06' '3.55, 'Siii'c'a 'N'lbSH'7500'XR3":'E'MSL '"a/io/de.......... 'Nc.... SILICA-Stl1-3/8’/d6 SO Trinity Place (noflevei) 3/8'/'06 Silica ni6s’h75'ooxr5 evsL 3/1 d;6’6 Nc SILICA-ST12-3/8/06 110 Greenwich Street (roof evel) 3/8/06 Silica NIOSH 7500 XR3 iEMSL 3;io;o6 Nc SILICA-S I 13-3/8/06 Marriott Hotel, 38tn Hoor;(root evel) 3/8/06 Silica NIUSH 7500 XHJ iEMSL 3/1 0,06 Nc SILiCA-STl'4-3/8/'O8 Wea Face - South end at corner (scafolding level 1 iSouth Face - Eaaond at comer (scaffolding level) 3/8/06 Silica 'NlbSH 750'0' XRj' iEMSL 'iVo'/b'e..........

I Nc

I SILICA-STlE-3/8/05 3/8/05 3 59 Silica NIOSH 7500 XRJ iEMSL 3,'10,'OS Nc Sll ICA-STI 6-3/8/06 iFaa =ace - North eno at corner (scaffolding level) 3/8/06 Silica NIUSH 7500 XRJ iRMSI 3,'in,'ns Nc siLicA^stYT'-d/d/d's ' Nort'h Face - Wea end at come-(scaffold ng level) ' 3/8/06 ' 'silica 'NlbSH 7'500 XRj'iEMSL '3,So,'06.............. Nc.... SIL'lCA-Sfl’-3/9/d6 'S'out'h'weaArea (adewal'kbridge level)' 3/9/68 's’iiica 'Nib'SH 7500 XRJ iEMSL ’a/ii/dd Nc SILICA-ST2-3/9/06 iSputheast Area/adewalkbridge level) i i i i i i i i i i 3/9/06 Silica NIUSH 7500 XRJ iEMSL ,3;i,i,;d6.............. Nc SILiCA-ST4-3/9'/d'6 Northwea Area (areet-l evel) 3/9/06 Silica NibSH'/'soo XRJ iEMSL 3/1 1/06 'no' Nc iSl'Lld'A-STd-'o'/S/dd'" iFirehouse #1 0 (roof level)' "3/9/65' '3 .'5'8 'siii'c'a' 'NibSH'dddd 'XRJ 'i'E'MSL '' ■3;i i /de.............. 'n'o' 'Nc.... SILICA-STI C-3/9/05 190C5 North Side SidewalkBridge 3/9/05 3 5-1 Silica NIOSH 7500 XRJ iEMSL 3/11/06 No Nc All ICA-STI f 0-3/9/06 Station -n Field niiplicafe 3/9/06 3 53 Silica NIUSH 7500 XRJ 'FMSI 3/11/06 No Nc SILICA-ST11-3/9/06" Sc/ 9'0 Trinity Plaoe'(ioOf level)" " " " " " " " " ' "3/9/06' '3 59 'Siii'c'a 'N'lbSH'7500'XRj"i'E'MSL "'3/11/06.............. 'Nc.... SILICA-STI 2-3/9/06 SILICA-STI 3-3/9/06 SILICA-STlAis'/S/db" Si/ 1110 Greenwich Street (roof evel) Marriott Hotel, 38th Roor(roof evel) Wea Face - South end at comer (scaTolding level) 3/9/06 3/9/06 3/9/66 3 6 Silica Silica Siii'c'a NIUSH 7500 XRJ ;EMSL NIOSH 7500 XRJ iEMSL 'NlbSH'^dd'XRD 'i'EMSL 3/11/06 3/11/06 3/1 1/06 No No 'No Nc Nc 'Nc.... s'lLiCAistYc'-sw’o’e" 'ijoi'o' South Face - Eaaend at corner- (scaffoid'ing level ) ' sw'o's'' '3'53' 'silica 'NIOSH 75'0'0'XRj'iEMSL ' 'srYi'/d'e.............. 'No' Nc.... SILICA-ST16-3/9/05 con jEaa -ace - North one at corner (scaffolding level) 3/9/05 3 58 Silica NIOSH 7500 XRJ iEMSL 3/11/06 No Nc SILICA-STI 7-3/9/06 !D012 North Face - Wea end at come' (scaffold ng level) 3/9/06 3 58 Silica NIOSH 7500 XRJ iEMSL 3/11/06 No Nc S'lLICA^StY-S/’l'o’/’o’s" 'iDOC'l' Southwea Area (adewaik bridge level) '3'/i'0/C6' '3'62' 'silica 'NIOSH 75'0’0'XRj'iEMSL ' 'a/Ya'/d'e.......... No Nc SILICA-ST2-3/19/06 C0C2 Southeaa Area (adewalk.bridge level) 3/10/06 3 61 Silica NIOSH 7500 XRJ iEMSL 3/13/06 No Nc SILICA-ST4-3/19/06 flOC3 INorthwea Area (areet-l evel) 3/10/C6 3 67 Silica NIOSH 7500 XRJ iEMSL 3/13/06 No Nc SILICAiST'E'-j/l'o/'o'b' ' C0L4 iFlrehouse #10 (roof level) 3/10/06 'silica 'NIOSH '/'su'd XRj' iEMSL 3/1 3/06 'No' Nc.... iG i'l'ICA-GT 1 C -3/1 'o'/O G' 'North Gide GidewalkBridge 'o/'i'o/'c'g' ■j GG Giiica 'NIOGrrTSdo'XRj' 'i'CMGL "'o/io/OG.............. ’Nc.... SILICA-STI 1-3/10/06 190CS 90 Trinity Place (roof level) 3/10/C6 Silica NIOSH 7500 XRJ iEMSL 3/13/06 No Nc siLicA-STYd-s/i'd/de '1960'7' il 10 Greenwich Street (roof evel) 's/'io/ce' '3 '6' Silica 'NIOSH 7500 XRj' iEMSL 'a/i'a'/d'e.......... No Nc S ILICiA-Sf 1' 3 -s'/i '0/6 6' co'ca' 'Marriott Hotel, Ys’lti Roor(roof evel) '3/'i6/'c'6' '3 '68 's'iii'c'a' 'NibsH'dddd 'xR j 'i'e'msl "'3/13/0'6.............. No Nc SILICA-ST14-3/10/O6 19009 Wea Face - South end at comer (scafolding level 1 3/10/C6 3 43 Silica NIOSH 7500 XRJ iEMSL 3/13/06 No Nc SILICA-STI E-3/1 0/06 19010 _South Face - Eaaend al comer (scaffolding level) 3/10/C6 3 34 Silica NIOSH 7500 XRJ iEMSL 3/13/06 No Nc S i'l'ic'A-S'T 1' 6 -3’/'l 'o’/O 6' "p'o'ii" iE'aa'=ace'-'North'eric'a't'o'o'r'n'e'r'(scali'ol'd'lh'g I'evel) " 's/'io/'c'e 's'iii'c'a' 'NlbSH'dsdd 'XRj' 'i'E'MSL "'3/13/0'6.............. ’g Nc SILICA ST17 3/10/06 19012 North Face Wea end at come- (seatbld ng level) 3/10/cs 3 43 Silica NIOSH 7500 XRJ iEMSL 3,'i3,'0S No Nc SlLICA-STl-3/n/0b COCI feouthwea Area (sidewalkbridge level) 3/11/C6 Silica NIOSH 7500 XRJ iEMSL 3/13/06 No Nc SILICA-Sfa-'s/i 1/06" 19'0'02' Southeaa Area (adewalk bridge level) 's^i/c'e Siiioa 'NlbSH'jddd'XRj 'i'EMSL " 'a'/ia/de.......... No Nc s'lLiCA^stY-s/Yi'/’o’e'' '1966'3' Nort'hwea Area (areel'-l evel) '3'/i'l/C6' 'silica 'NIOSH 75'0'0'XRj'iEMSL ' 'a/Ya'/d'e.......... No Nc SILICA-ST5-3/n/06 19004 (Firehouse #10 (roof level) 3/11/C6 3.58 Siiioa NIOSH 7500 XRJ iEMSL 3/13/06 Nc SILICA-Sl 10-3/1 I'/Oe 19005 'n 0 rth's I'd'e si d ewa'i k'Bn'd ge.............................................. 3/11/06 Siiica 'n'iUSH 7500 XHJ iEMSL '3/13/06 Nc S'lLiCAist'l'l'-3H'l'/o'6' lioc'e 'So'f rir'rily'piace (rooNevei)" 's'/i'i/ce' Silica 'NIOSH 75'0'0'XRj'iEMSL 3/I3'/6'6 Nc SILICA ST12 3/11/06 (110 Greenwich Street (roof evel) 3/11/cs 3 43 Siiioa NIOSH 7500 XRJ iEMSL 3/13/06 No Nc SILICA-ST13-3/1 1/06 S'lLiCAiSTY4'-3/l'i/'0'6' SILICA-STlE-3/11/06 s Marriott Hotel, 38th Roor(root evel) 'Wea Face '-'South en'd' at comer (scaholding level' 1' South Face - Eaaend al comer (scaffolding level) 3/11/C6 '3'/'l'l/C6' 3/11/06 3 31 '3'54' 3 63 Silica Siiioa Siiioa NIOSH 7500 XRJ iEMSL 'NlbSH 7'50'0'XRj'iEMSL NIOSH 7500 XRJ iEMSL 3/13/06 '3,Y3'/d'6.............. 3/13/06 .No. Nc Nc Nc SILICA-ST16-3/11/06 ■g. lEaa =ace - North enc at corner (scaffolding level) 'N'o'rt'n i-a'oe'-' Wea end 'at'oo'-ne-'(scattol'd'ng level)' 3/11/06 3'/'l1/C6 3 63 '3 54 Siiioa Silica NIOSH 7500 XRJ iEMSL Nibs'H'7'500 XHJ iEMSL 3/13/06 3/1 3/0'6 Nc Nc si’l'ic’a-s’t I’Y/ij/de" 'S'oul'hweaAreY(siYe'wark'bridge'le'v'ei)'" " " 's/'iz/'c'e' 3 55' 's'iiica 'NlbSH'dsdd 'XRj' 'i'E’MSL '3/13/0'6 Nc SILICA-ST2-3/1 2/05 »0C2 Southeaa Area (adowalk bridge level) 3/12/cs 3 5-1 Siiioa NIOSH 7500 XRj iEMSL 3,'i3,'0S Nc s'li' ioAisTA-a/i'p/n's'' Northwea Area (areel-level) 'o'/'i'p/ro' Silica 'NIOSH 7'50'0' XRj' iFMSI ' 'YYn'/n's.......... Nr....

I Sl’L'lCA-S’f5-3/i2/d6’’ 'Firehouse'#! o'iroof level)' '3/'i2/'0'6' '3'5'5' 's'iii'c'a' "N'lbSH'dddd'XRj'i'E'MSL "■3/13/0'6.............. ’Nc.... SILICA-STlC-3/12/06 North Side SidewalkBridge 3/12/06 3 46 Siiioa NIOSH 7500 XRJ iEMSL 3/13/06 Nc iSILICA-STl1-3/12/06 po Trinity Place (roof level) 3/12/06 Siiioa NIOSH 7500 XRJ iEMSL 3/13/06 Nc SILICA'S I i2-3'/l'2'/66 Yio Gre'enwloh' street'(root"evel)" ' 3/12/06 Siiioa 'n'iOSH 7500 XHJ iEMSL 'a/ia/de Nc SILICA-STI 3-3/1 2/06 SILICA-STI-1-3/1 2/06 Maniott Hotel, SSUi Roor(i'oof evel) ,Woa Face - South end at comer (scafolding level i 3/12/C6 3/12/CS Silica Siiioa NIOSH 7500 XRJ NIOSH 7500 XRJ iEMSL iEMSL 3/13/06 3/13/06 I Nc Nc

B " 's'/i 3/ris.......... Sli lUA-sfiFY/i'p'/iiY South Face - Fa a an,'! al comer (scaffolding level) '3/12/0'6 Siiica 'NibsH'dsnn'xR j 'i'FMs'i' 'Nc.... s'lLiCA^stYe'-s/i'd/o'e East/ace - Nort'h enc at corner (sca'ff'olding l evel) '3'/i'2/C6' 3'72' 'silica ’Nlbs’H’Ys'o’o’XRj’iEMSL ' ’arYa’/d’e.......... Nc'.... SILICA-Sfl 7-3/12/06 North Face - Weaend at come-(scaffold ng level) 3/12/06 Siiioa NIOSH 7500 XRJ iEMSL 3/13/06 Nc SILIC'A-Sfi-3/i3/d6 Southwea Area (adewalkbridge level) 3/13/06 Siiioa 'NIOSH 7500 XRj iEMSL '3/14/06 'No 'Nc.... S'lLiCAist'2'-3/'l'3'/'o'b'' Soutlieaa Area (adewalkbridge level) 's'/i's/Ob' 'silica 'NIOSh'/'p'o'o'XRj'iEMSL 3/14/06 'n6' Nc'.... SILICA-ST4-3/13/08 Northwea Area (areel-l evel) 3/13/C6 3 53 Silica NIOSH 7500 XRJ iEMSL 3/14/06 No Nc SILICA-ST5-3/13/05 »0C-l Firehouse #1 0 (roof level) 3/13/C6 3 58 Siiioa NIOSH 7500 XRJ iEMSL 3/1-1/06 No Nc s'li' ibA-STYd-s/i's/o'e 'lino's' 'North Slde'SidewalkRriti'g'e ' ' " " " " " " " 's'/'i's/ffi' '3'53' Silica 'NIOSH 7'50'0' XRj' iFMSI ' 'YYa/o's.......... 'No' Nr.... SILICA-STI Y3/13/96 o SILICA-STI 2-3/1 3/06 siLiCAistYd-a/i'a/de '9006 19007 '1900'8' 90 Trinity Place (roof level) 1110 Greenwich Street (roof evel) Marrio'tt Hotel, 38thi Roorfroot evel) 3/13/06 3/13/06 '3'/'l'3/C6' '3' 71' Siiioa Siiioa NIOSH 7500 XRJ iEMSL NIOSH 7500 XRJ iEMSL 'silica ; 'NibSH 7500 XR3' :EMSL 3/14/06 3/14/06 '3,Y4/d'6.............. No No 'No' Nc Nc Nc.... S i'l'ic'A-S'T 14-3/'l '3/6 6' 'wea Face - South end at comer (scaholding level 1 '3/'i3/'o'6' 's'lll'o'a' ’N’lb'SH'/ddd'XRj' 'i'EMSL 3/14/06 'n'o' 'Nc....

go SILICA-STI 5-3/1 3/06 South Face - Eaaend al comer- (scaffolding level) 3/13/C6 Silica NIOSH 7500 XRJ iEMSL 3/14/06 No Nc SILICA-STI 6-3/1 3/06 ‘3011 Eaa -ace - North enc at corner (scaffolding level) 3/13/C6 Silica NIOSH 7500 XRJ iEMSL 3/14,'OS No Nc S ILICiA-Sf 1' 7-'3'/i '3/6 6' 13'0'1'2' North Face - 'Wea end at come- (scaffold ng level) '3/'i3/'c'6' '3'6'3' 's'iiica 'NibsH'dddd 'xR j 'i'e'msl "'3/14/0'6.............. No Nc SILICA-STI -3/14/06 80C1 Southwea Area (adewalkbridge level) 3/14/06 Silica NIOSH 7500 XRJ"EMSL 3/15/06 No Nc (Southeaa Area (adewalkbridge level) m SILICA-ST2-3/14/06 <3002 3/14/06 3 67 Silica NIOSH 7500 XRJ iEMSL 3/15/06 No Nc Sl'LIC'A-S'f4-'3'/i4/d6" !3'0'C3' 'Northwest Area jstreel-l evel) '3/14/0'6 Siii'c'a' 'NlbSH'jddd'XRj 'i'EMSL " 'a'/id/de.......... 'No 'Nc.... S'lLICAiSt'5'-3/'l'4/'o'6'' '13004 ■iFl'reh'o'u'se'#! b'('r66f level')................................................ '3'/i4/C6' '3'63' 'silica 'NIOSH 75'0'0'X'Rj'iEMSL ' 'iYs'/d'e.......... 'No' Nd.... OlLICA-GTlC-3/14/OG North Gide GidewalkUridge 3/14/CG .3 .2 3 Silica NIOGI I 7500 XRJ iCMGL 3/15/OG No Nc si'LiCA-sfiiY/iY/oe' 90 Trinity Place (roof level) 's/lii'c's 'Siii'c'a 'NibsH'dddd'xRj 'i'e'ms'l " 'a'/id/ds.............. No Nc s'lLiCA^stYz'-a/i'Afl'e’ '1960'7' Il 10 Greenwich Street (roof evel) '3'/14/or '3 '6'' Silica 'NIOSH 75'0'0'XRj'iEMSL ' '3,Y5'/d'6.............. No Nc SILICA-ST13-3/14/06 0008 (Marriott Hotel, 38th Roor(roof evel) 3/14/06 3 74 Silica NIOSH 7500 XRJ iEMSL 3/15/06 No Nc

o SILICA-ST14-3/14/96 S’lLICA:stY5’-3/l’4A9’6’ SILICA-Sl 19009 ’aoi’o’ con Wea Face - South end at comer (_scahol ding level 1 'S'o'u'th'Faoe'-'Eaa'ehd'aYoo'rh'e'r'(scaffoldi'n'g I'evel)' (Eaa =ace - North enc at corner (scaffolding l evel) 3/14/06 '3/14/06' 3/14/C6 3.44 '3'58' 3 62 Silica 'Silica Silica NIOSH 7500 XRJ iEMSL 'NlbSH'75'o'o'X'Rj'iEM'SL' NIOSH 7500 XRJ iEMSL 3/15/06 ' ’iYs’/d’e.............. 3/15/06 No Nc Nc Nc J] .2. North Face - Wea end at come- (scaffold ng level) .2/.’*2G Silica NIOGI I 7500 XRJ iCMGL 3,;i 5/OG .No. Nc □0

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NYC-WTC_000232049