Law Department notice on WTC document preservation, Oct 2001

NYC 9/11 Public Portal Document

Table K-3: Bulk Dust Sampling at 110 Greenwich Analyte Screening Level Aluminum 18900 mg/Kg 780000 mg/kg Antimony____ < 5.75 mg/Kg 310 mg/kg Aroclor 1016 < 740 ug/kg Aroclor 1221 < 740 ug/kg Aroclor 1232 < 740 ug/kg Aroclor 1242 < 740 ug/kg Aroclor 1248 < 740 ug/kg /Voclor 1254 < 740 ug/kg Aroclor 1260 < 740 ug/kg Asbestos _______ [3] /Vsenic < 0.96 mg/Kg 43 ma/ka Barium______ 195mg/Kg Beryllium_____ 1.76 mg/Kg 15 mg/kg Cadmium____ 3.8 mg/Kg 390 mg/kg Calcium_____ 186000 mg/Kg Chromium 71.5mg/Kg 3900 mg/kg Cobalt_______ 5.6 mg/Kg 47000 mg/kg Copper______ 93.2 mg/Kg 31 row mg/kg Iron 7410 mg/Kg 23 mg/kg Lead 97.7 mg/Kg Magnesium 19100 mg/Kg Manganese 757 mg/Kg 18row mg/kg Mercury_____ 0.37 mg/Kg 78 mg/kg Nickel 15.5 mg/Kg 16000 mg/kg Potassium 5400 mg/Kg Selenium < 0.96 mg/Kg 3900 mg/kg Silver 4.91 mg/Kg 3900 mg/kg Sodium 3880 mg/Kg TEQ (ND =1/2) 60.9pg/g 410pg/g Thallium < 0.96 mg/Kg 55 mg/kg Vanadium 18.3 mg/Kg 5500 mg/kg Zinc 791 mg/Kg 230000 mg/kg [1] = All samples collected on September 26,2001. [2] = Residential soil screening level from EPA’s Hazard Evaluation Handbook. Only accounts for health risk from ingestion. 131 = No result reported in NYC Resconse database.

On October 10,2001, two bulk dust samples inside 100 Church Street were collected and analyzed for asbestos. The results of this testing, done at the Department of Justice’s request, found that one of the samples contained 1.1 percent asbestos while the other was non-detect.

On October 23, 2001,10 air samples were collected at 100 Church Street and analyzed for asbestos. The samples were analyzed by both the TEM and PCM methods. All TEM results were below the AHERA standard of 70 s/mm2 and all PCM results were below .01 f/cc. This testing was performed on the 18* and 19* floors after these floors had been cleaned.

95 Report No. 2003-P-00012

NYC-WTC_000145450