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EPA interim final report on WTC background study, April 2003

Machine-extracted title · confidence 100%

Interim final report from EPA Region 2 detailing a background study of environmental conditions at the World Trade Center site.

NYC-WTC_000145869–000146029

Folder label: “INTERIM FINAL April 2003

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I CT o' TJ O 3. Table 7-4. Estimated Distribution of Lead Loadings (ug/ff) In U.S. Housing 91 O o o c Uncarpeted Floors, By Census Region and Building Age Category (source: HUD 2001) 3 CD

I R^on lAgeofUousingl

iNortheast ? 1978 -1998 j n 92 IrWii Hj 1.6 L l?-4| 3.5 cv I var

11.85 1265+025 I stderr | max | P99

P-2j 1.1-0 8 11-0 W5 I P90 I

- 5.5J Q3 I median I QI I PS I min

boil OjJt 0.8 dHectlan % nondetects

.3:4 Ipt 0.81! 21/92 77% iNortheast j 1960 -1977 j 79 r _ 5,1.1 d.53.j 5 7:5 38,2 3.73e+p4)l 2.01 129.6? 129.6 .dpi 6.p(i 3.p( i.o8 0.8 8 0-81! 0.8 30/79 62% iNqipieajrt 5 1946-1959 g [Northeast | 1940-1945 ■ 08 J.lL..4p,8L 2d 13’ 1.66e+03| Pd| 17.p[ 17.0 .. 15,P5 P:P 3jt °-!L- mL.. 0.8 30/68 56% 38 .J-3.L.?P?5j dd 15.2 6.55^3 J! 75.08 . 75.0 13.0, lop 7-pf. 4.1 S l.oj 0.81 __ 0.8 23/38 39%

Hf oil [Northeast (j <= 1939 8 155 24.0)! 1765.85 12.2 73.78 3.12e+06 12.9^ 1845.0§ 128.0 56.7 31.0 9.08 4.0 0.8 111/155 28% [Midwest 5 1978-1998 (i 8’ s .iaI. .ml. 12.5| X52e+P21 0.21 18.05 5.6 4-0 .30 0.8 0.85 0.8 16/87 82% [Midwest 5 1960-1977 j 133 2.85 _ 74,0 5 26.21 5.47(8+031. 0.6 ( 72.0 5 22.0 5.0 .2.pL_. 1.0 0.8(1 0.8? 0.8 45/133 66% [Midwert (j 1946-1959 8 85 8 84 [ 2IO.9J 254 ' 4.45e+04 2.0 j 105.01 91.0 52.0 L. 18.0 ,Ao| 2p.8(.. 2.08 toi. 0.81 0.8 47/85 45% (Midwest 8 1940:1945 j 25 15.1,1, _269dJ.. 17.8 ( 7.28e+O4ii 4.3} 92.05 92.0 , 7L0j -33.2 10.2j l.o5 0.85 0.8 15/25 40% iMidwest 8 <= 1939 ji 124 56.4 8 4087.2 ' 10.91 72.59 1.676+07 8 37.8!; 4830.01) 386.0 107.0 li 47.0 15.08 5.0(1 0.85 0.81 0.8 92/124 26% Isoutfi , 1 1978- |998. j 2.0|... 200.0“ 9.9 j 99.4 4.00e+045 1-2| 556.08 5.0.1 ... 5.0J 3.0] 0.81 op ?? 71% Isouft 5 1960 -1977 I 223 JdL .-IIPI .6.65e^28 .0.2?. 28.01 12.0{..... . o-pj . .3P Ml...... 1.0I 0.81 0.81 0.8 ?? ?? Isouth 5 19^-1959 5 125 i 2.08 378.81 lOdJ 54.51 1.44C+05 ) 3.2? 315.0j 14.oj _3X(( 0.8'1 P.8[ 0.8 ?? ?? bouth 1940-194,^ 5 43 J8.3 ( 777e+03 |! 1:2? 56.ol 56.pS - 1-7P1 __9.o| 5.0 i 2.5 1.2 i 0:8[ 0.8 ?? ?? Isouth 5 <= 1939 5 80 17.2!) 479.35 3.95 27.8[ 2.30c :; 2.30e+05. All 404.3 233.o| '6O.OI 12.0} 4.0 1.8) oL 08 ?? ?? 5 1978^1998 j 8 [West jWest J 196pj;1977 5 113 195 6 2.75 14} 3.9J 233.6, 11.51 62.3 j 10.7| 2.71 85.58 5.46c+04 7 1.32e+02 4.o( 16.o5 3.88e+O3 2.0^ 0.1? 276.0?, 11.0^ 10.0J p-oi -4 3:0 8. 1.0( O8 2.01 '■ -‘'"l 0,8 i 0.81 Pdl Pdl 0.8 0.8 ?? ?? ?? ?? Iwest 5 1946-1959 5 27 0.8? 39.0 { 15.pJ ’4. ....34 .. ...1:58- 0,9! 0.8? 0.8 ?? ??

iwest 5 19^-1945 5 li <= 1939 5 21 39 4.oj , 34.15 5.0 5 83.98 0.9 J _ ^8.5,5 1.16e+03 3.15 16.7? 7.05e+03 1.2? 9.08 41.08 41.0? .^4 27.01' 9.0,5 Itoi 4.0 ii , 4.of! 2.15 1.5 j 0.88 1.15 0.8? , Od 0.8 ?? ?? ?? ??

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