NYC-WTC_000209087

NYC 9/11 Public Portal Document

EMSL

METHODOLOGY 5W

All analyses are adapted from one or more of the following reference methods;

“Guidelines Establishing Test Procedures for the Analysis of Pollutants”, Code of Federal Regulations Vol. 40, Part 136.

“Test Methods for Evaluating Solid Waste”, SW846 3'‘‘ Edition, 1996.

• “Appendix Il-Method 1311 Toxicity Characteristic Leaching Procedure (TCLP)”. Code of Federal Regulations Vol. 40, Part 261.

‘Standard Methods for the Examination of Water and Wastewater”, 18“' and 19'" edition.

“Methods for the Chemical Analysis of Water and Wastes”, EPA 600/4-79-020, 1983.

“Annual Book of Standards, Section II-Water”, American Society for Testing and Materials (ASTM).

“Methods for the Determination of Organic Compounds in Drinking Water”, EPA600R/95-131, 1995.

“OfTicial Methods of Analysis”, Association of Official Analytical Chemists (AOAC), IS’" Edition, 1990.

NIOSH Manual of Analytical Methods, d* Edition, 1994, DHHS Pub. No. 94-113.

DEFINITIONS OF ABBREVIATIONS

U: Not Detected B: Compound found in method blank E; Estimated Concentration ND: Not Detected NFL: No Free Liquid D: Dilution NR: Not Requested MDL: Method detection limit NA: Not Applicable MS/MSD: Matrix Spike/Matrix Spike Duplicate Less than minimum detection limit RPD: Relative Percent Difference NC: Not calculable RSD. Relative Standard Deviation LCS: Laboratory Control Sample PPb Parts per billion = gg/Kg, gg/L NTU: Nephelometric Turbidity Units PPJn Parts per million = mg/Kg, gg/g J: Compound detected below gmhos; Conductivity units; reportable detection limit resistance is expressed in ohms ’F: degrees Fahrenheit col/3; Colonies per volume of sample ’C; degrees Celcius mg; milligram (1000 mg= 1 g) pg: microgram {1000 tig = 1 mg) mi: milliliter (1000 ml = IL) g: gram (1000 g = 1 kg) L liter Pl: microliter (1000 pl= 1 ml) Kg: Kilogram

COMMENTS: All soil samples are calculated on a dry weight basis except where noted.

CITY_21MC100_007211188

NYC-WTC_000209088