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NYC-WTC_000195837
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NYC 9/11 Public Portal Document
starting DATE; 1/18/02 DATE LAST REV.; Z'l 4/02 DRAFT. CHCK. BY: S. Panguiuri INITIATOR: C Hedin DWG. NO.: Dec16-31PCM.pdf DRAWN BY: G. Thompson DRAWN BY: ENGR. CHCK. BY: PROJ. MGR.: PROJ. NO.: 820337
LEGEND □ WTC Site Area • PCM Detects (> 0.1) X Detected Sample • Non Detected Samples
Impact Zone PCM Contours 0.0 - 0.1 ■i 0-1 - 0.2 0.2-0.3 All Units are f/cc ■1 0.3-0.4 0.4-1.0 H >1.0
-:-^Dec-0f I Sampling Date 0.020 PCM Result
Primary road with limited access A.... > Z\/ Secondary and connecting roads /\/ Waterfront
MODEL PARAMETERS: TYPE= KRIGING (UNIVERSAL) GRID SIZE = 4 METERS VARIOGRAM = UNEAR, NO DRIFT SLOPE = 1 J ANISOTROPY = 1,0 NON-DETECTS = 0.0 DATA PTS (N) = 630 J Note; Maximum value at each location was used for contouring; however, every exceedance above 0.1 was posted for discussion purposes. If no exceedances Q occurred for the given time period, the highest value for all values is posted.
to s o 100 200 Meters FIGURE #7: WORLD TRADE CENTER - GROUND ZERO o PCM AIR SAMPLE ANALYSIS o I DECI 6, 2001 - DEC 31,2001 o o O to to
NYC-WTC_000195837
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NYC-WTC_000195837Source: NYC Law Department, mirrored locally
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