Lead poisoning prevention fax transmittal, undated

NYC 9/11 Public Portal Document

2,2-d IblOi

8,500 - 43,000 SB Potassium N/A 50.0 ___

0.1 - 3.9 0.05 2 or SB Silver N/A N/A ' b.i “ SB_____ [Sodium nZa 6,000 - 8,000 50.0 SB ^ailiutn N/A N/A oTf” SB Vanadium WA 1 -300 oT” 150 or SB Zinc N/A 9-?0 0.2 20 or SB

Note: Some forms of metal salts such as Aliuninum Phosphide, Calcium Cyanide, Potassium Cyanide, Copper cyanide, Silver cyanide, Sodium cyanide. Zinc phosphide, Thallium salts, Vanadium pentoxide and Chrornitun (VI) compounds are more toxic in nature. Please refer to the USEPA HEASTs database to find cleanup objectives if such metals are present in soil. SB is site background N/A is not available * CRDL is contract required detection limit which is approx. 10 times the CRDL for water. ** New York State background *#* Some forms of Cyanide are complex and very stable while other forms .are pH dependent and hence are very unstable. Site-specific form(s) of Cyanide should be taken into consideration when establishing soil cleanup objective. •J-*** Background levels for lead vary widely. Average levels in undeveloped, rural areas may range from 4-61 ppm. Average background levels in metropolitan or suburban areas or near lughways are much higher and typically range from 200-500 ppm. «***# Recommended soil cleanup objectives are average background concentrations as reported in a 1984 survey of reference material by E. Carol McGovern, NYSDEC. M

http ://www. dec. state.ny. us/website/der/tagms/prt g4046e. htm I 1/14/02

is-d sr:60 £002-92-ybW NYC-WTC_000150492