NYC-WTC_000220051

NYC 9/11 Public Portal Document

HEAVY METALS NYSDEC TAGM ancd TCLP Regulatory Levels May 2002

SOIL SAMPLE RESULTS

TCLP Soil Soil Soil Soil Soil CRITERIA Sample 1 Sample 2 Sample 3 Sample 4 Sample 5 COMPOUND (msfltg) (ppm) (ppm) (ppm) (ppm) (ppm) Arsenic 100 0.028 0.028 0.028 0.028 0.028 Barium 2,000 0.779 1.11 0.841 0.741 0.512 Cadmium 20 0.004 0.004 0.019 0.004 0.004 Chromium 100 0.0094 0.0076 0.0773 0.006 0.040 Lead 100 0.021 0.021 0.96 0.021 0.021 Mercury 4 0.002 0.002 0.002 0.002 0.002 Selenium 20 0.03 0.03 0.03 0.03 0.03 Silver 100 0.01 0.01 0.01 0.01 0.01

Bold # and shaded box - Soil sample results exceed TCLP regulatory levels. TCLP - Toxicity Characteristic Leaching Procedure ppm - pari per million mg/kg - miligram per kilogram

* Soil samples were taken on May 17, 2002. Soil sample locations/identification; sample 1 - SW comer, sample 2 - SE comer, sample 3 - NW corner, sample 4 - NE corner sample 5 - Pier 25

NYCDDC 1 12/1/1999

CITY_21MC100_002911382

NYC-WTC_000220051