Table 1 Soil and Groundwater Sampling Summary Table

Transcription

1 Table Soil and Groundwater Sampling Summary Table Phase II Investigation Consolidated Edison - Former kent Avenue Generating Station 0 Kent Avenue Brooklyn, NY Sample ID Date Installed Date Sample Collected Sample Matrix Method of Installation/Type of Boring or Well Method of Sample Collection Number of Sample Depth (ft Samples Collected bgs) Parameters Analyzed PBL- 7/26/2006 7/26/2006 Soil Test Pit Excavation Solvents via 8260, petroleum products, phenols, PAH, and other chemicals via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 805M, Total Organic Carbon PBL-2 7/26/2006 7/26/2006 Soil Test Pit Excavation Solvents via 8260, petroleum products, phenols, PAH, and other chemicals via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 805M. Sample also collected for waste characterization: RCRA TCLP VOCs, RCRA TCLP SVOCs, RCRA TCLP Metals, ignitability, corrosivity, and reactivity. PBL-5 7/25/2006 7/25/2006 Soil Test Pit Excavation Solvents via 8260, petroleum products, phenols, PAH, and other chemicals via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 805M. Sample also collected for waste characterization: RCRA TCLP VOCs, RCRA TCLP SVOCs, RCRA TCLP Metals, ignitability, corrosivity, and reactivity. PBL-7 7/7/2006 7/7/2006 Soil Test Pit Excavation Solvents via 8260, petroleum products, phenols, PAH, and other chemicals via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 805M PBL-8 / PBL-8A Soil Test Pit Excavation / Solvents via 8260, petroleum products, phenols, PAH, and other chemicals via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 805M. Sample also collected for waste characterization: RCRA TCLP VOCs, RCRA TCLP SVOCs, RCRA TCLP Metals, ignitability, corrosivity, and reactivity. PBL-9 7/20/2006 7/20/2006 Soil Test Pit Excavation Solvents via 8260, petroleum products, phenols, PAH, and other chemicals via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 805M, Total Organic Carbon ft bgs = feet below ground surface

2 Table (continued) Soil and Groundwater Sampling Summary Table Phase II Investigation Consolidated Edison - Former kent Avenue Generating Station 0 Kent Avenue Brooklyn, NY Sample ID Date Installed Date Sample Collected Sample Matrix Method of Installation/Type of Boring or Well Method of Sample Collection Number of Sample Depth (ft Samples Collected bgs) Parameters Analyzed S- Soil Hand concentrations), Target Analyte List (TAL Metals) by EPA Methods 600B/747 S-2 Soil Hand concentrations), VOCs by EPA Method 8260B, and SVOCs by EPA Method 8270 (PAHs only) S-3 Soil Hand concentrations), VOCs by EPA Method 8260B, and SVOCs by EPA Method 8270 (PAHs only) S-4 Soil Hand concentrations) S-5 Soil/Water Hand concentrations) S-6 Soil Hand concentrations) S-7 Soil Hand concentrations) ft bgs = feet below ground surface

3 Table (continued) Soil and Groundwater Sampling Summary Table Phase II Investigation Consolidated Edison - Former kent Avenue Generating Station 0 Kent Avenue Brooklyn, NY Sample ID Date Installed Date Sample Collected Sample Matrix Method of Installation/Type of Boring or Well Method of Sample Collection Number of Sample Depth (ft Samples Collected bgs) Parameters Analyzed S-8 Soil Hand concentrations) S-9 Soil Hand concentrations) MW- 8/9/2006 Water Hollow Stem Auger/20 ft deep Permanent Monitoring Well Bladder Pump Solvents via 8260, petroleum products and PAH via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 800M MW-2 8/9/2006 ; /3/07 Water Hollow Stem Auger/20 ft deep Permanent Monitoring Well Bladder Pump /5/06: Solvents via 8260, petroleum products and PAH via 8270, PCBs via 8082, metals via TAL Metals 600B/747, Total Petroleum Hydrocarbons via 800M. /3/07: Solvents via 8260, PAH via 8270, Chlorides by GW- Water Geoprobe/4 ft deep Temporary Well Peristaltic Pump VOCs by EPA Method 8260B, SVOCs and PAHs by EPA Method 8270 (acid extractables and base neutrals), PCBs via EPA Method 8082, TPH via EPA Method 805M (with fingerprint analysis performed on detectable concentrations), Target Analyte List (TAL Metals) by EPA Methods 600B/747 (a filtered and an unfiltered sample were collected) ft bgs = feet below ground surface

4 TABLE 2 DRAFT SUMMARY OF SOIL ANALYTICAL RESULTS WASTE CHARACTERIZATION SAMPLES FORMER KENT AVENUE GENERATING STATION 0 KENT AVENUE, BROOKLYN, NEW YORK PBL-2 (6'-6.5') PBL-5 (8'-8.5') PBL-8 (8'-8.5') PBL-8A (9'-9.5') Toxicity 7/26/2006 7/25/2006 Regulatory Analyte Analytical Units Level* Method % solids SM2540G percent NA NA NA NA Ignitability EPA 7. 0 C NO NO NO NO Mercury (TCLP) EPA 7470A TCLP ppm 0.00 J J J J 0.2 Arsenic (TCLP) EPA 600 TCLP ppm U J Barium (TCLP) EPA 600 TCLP ppm J J 0.7 J J 00.0 Cadmium (TCLP) EPA 600 TCLP ppm U U U U.0 Chromium (TCLP) EPA 600 TCLP ppm U U J 5.0 Lead (TCLP) EPA 600 TCLP ppm U U U 5.0 Selenium (TCLP) EPA 600 TCLP ppm U U U U.0 Silver (TCLP) EPA 600 TCLP ppm U U U J 5.0 ph EPA 9045C standard units Releasable Cyanide Reactive Cyanide mg/kg U 0 U Releasable Sulfide Reactive Sulfide mg/kg U 40 U 2,4,5-Trichlorophenol EPA 8270 TCLP ppm U U U U ,4,6-Trichlorophenol EPA 8270 TCLP ppm 0.00 U 0.00 U 0.00 U 0.00 U Dinitrotoluene EPA 8270 TCLP ppm U U U U 0.3 Hexachlorobenzene EPA 8270 TCLP ppm U U U U 0.3 Hexachlorobutadiene EPA 8270 TCLP ppm U U U U 0.5 Hexachloroethane EPA 8270 TCLP ppm U U U U 3.0 Nitrobenzene EPA 8270 TCLP ppm U U U U 2.0 Pentachlorophenol EPA 8270 TCLP ppm U U U U 00.0 Pyridine EPA 8270 TCLP ppm U U U U Methylphenol EPA 8270 TCLP ppm U U U J 3+4-Methylphenols EPA 8270 TCLP ppm U U ,4-Dichlorobenzene EPA 8270 TCLP ppm U U U U 7.5 Benzene EPA 8260 TCLP ppm U U U U 0.5 Vinyl Chloride EPA 8260 TCLP ppm U U U U Butanone EPA 8260 TCLP ppm U U 0.00 U 0.00 U Chlorobenzene EPA 8260 TCLP ppm U U U U 00.0,-Dichloroethene EPA 8260 TCLP ppm U U U U 0.7 Carbon Tetrachloride EPA 8260 TCLP ppm U U 0.00 U 0.00 U 0.5 Chloroform EPA 8260 TCLP ppm U U U U 6.0,2-Dichloroethane EPA 8260 TCLP ppm U U U U 0.5 Trichloroethene EPA 8260 TCLP ppm U J U U 0.5 Tetrachloroethene EPA 8260 TCLP ppm U U U U 0.7 * Toxicity Regulatory Levels from NYSDEC, TC Rule, september 25, 990 No guidance value published in this reference J = Compound detected in sample at concentration less than the MDL (an estimated concentration). NA = Not analyzed U =Not detected. Page of

5 TABLE 3 SUMMARY OF SOIL ANALYTICAL RESULTS CON EDISON - FORMER KENT AVENUE POWER STATION BROOKLYN, NEW YORK PBL- PBL-2 PBL-5 PBL-5RE PBL-7 PBL-7RE PBL-8 PBL-8A PBL-8ARE PBL-9 PBL-9RE TAGM Sample Depth (ft.): 5'-5.5' 6'-6.5' 8'-8.5' 8'-8.5' 7'-7.5' 7'-7.5' 8'-8.5' 9'-9.5' 9'-9.5' 4'-4.5' 4'-4.5' Soil Conc. * Volatile Organic Compounds (VOCs) by EPA Method 8260: Chloromethane 7/26/ U 7/26/ U 7/25/ U 7/25/ U 7/7/ /7/2006 U U U U /20/2006 U /20/2006 U U Vinyl Chloride U U U U U U U U U U U 0.2 Bromomethane 0.02 U 0.03 U 0.02 U 0.03 U 0.03 U 0.03 U 0.06 U 0.05 U 0.05 U 0.03 U 0.03 U Chloroethane 0.03 U 0.03 U 0.03 U 0.03 U 0.04 U 0.04 U 0.07 U 0.06 U 0.06 U 0.04 U 0.04 U.9,-Dichloroethene U U U U U U U U U U U 0.4 Acetone 0.20 JB 0. JB U JB 0.60 J 0.0 J 0.40 J J J J JB 0.2 B Carbon disulfide U 0.02 JB U U U U J U U U J 2.7 Methylene Chloride 0.0 U 0.0 U 0.0 U 0.0 U 0.02 U 0.02 U 0.04 U 0.03 U 0.03 U 0.02 U 0.02 U 0. trans-,2-dichloroethene U U U U U U U U U U U,-Dichloroethane U U U 0.07 U U U U U U U U Butanone J 0.07 U 0.07 U 0.08 U 0.09 U 0.09 U U 0.02 U 0.02 U 0.09 U 0.09 U 0.3 Carbon Tetrachloride U U U U U U U U U U U 0.6 cis-,2-dichloroethene U U U U U U U U U U U Chloroform U U U U U U U U U U U 0.3,,-Trichloroethane U U U U U U U U U U U 0.8 Benzene U U U U U U U U U U U 0.06,2-Dichloroethane U U U U U U U U U U U 0. Trichloroethene U U U U U U U U U U U 0.7,2-Dichlororpropane U U U U U U U U U U U Bromodichloromethane U U U U U U U U U U U 4-Methyl-2-Pentanone 0.02 U 0.02 U 0.02 U 0.02 U 0.03 U 0.03 U 0.05 U 0.05 U 0.05 U 0.03 U 0.03 U.0 Toluene U U U U U U U U U U U.5 t-,3-dichloropropene U U U U U U U U U U U cis-,3-dichloropropene U U U U U U U U U U U,,2-Trichloroethane U U U U U U U U U U U 2-Hexanone U U U U U U U U U U U Dibromochloromethane U U U U U U U U U U U N/A Tetrachloroethene U U U U U U U U U U U.4 Chlorobenzene U U U U U U U U U U U 0.6 Ethyl Benzene J U U U U U U U U U U 5.5 p&m-xylenes J U U U 0.05 J 0.0 J U U U U U o-xylene 0.03 J U U U U U U U U U U Styrene U U U U U U U U U U U Bromoform U U U U U U U U U U U,,2,2-Tetrachloroethane U U U U U U U U U U U 0.6 Total VOCs * Soil cleanup guidance values from NYSDEC, TAGM 4046, April 995 No guidance value published in this reference MDL = Method Detection Limit Highlighted concentrations exceed their respective TAGM value. N/A = not available

6 TAGM Sample Depth (ft.): 5'-5.5' 5'-5.5' 6'-6.5' 8'-8.5' 8'-8.5' 7'-7.5' 7'-7.5' 8'-8.5' 8'-8.5' 9'-9.5' 9'-9.5' 4'-4.5' Soil Conc. * Dilution Factor Semi-Volatile Organic Compounds (SVOCs) by EPA Method 8270:,2,4-Trichlorobenzene 7/26/ U 7/26/ UD 7/26/ U 7/25/ U 7/25/ /7/2006 UD U 7/7/ U U //900 UD U // U 7/20/ U 0.7,2-Dichlorobenzene U UD 0.06 U 0.06 U UD U U U UD U U U,3-Dichlorobenzene U 3.00 UD U U UD U U U UD U U U 0.3,4-Dichlorobenzene 0.70 U 3.0 UD 0.07 U 0.07 U 0.3 UD U U U UD U U U.7 2,2-oxybis(-Chloropropane) 0.6 U UD U U UD U U U UD U U U 2,4,5-Trichlorophenol 0.60 U 3.00 UD U U 0.30 UD U U U UD U U U 2,4,6-Trichlorophenol U UD U U UD U U U UD U U U 2,4-Dichlorophenol U UD U U UD U U U UD 0.09 U 0.09 U U 0.4 2,4-Dimethylphenol U UD U U UD U U E D U U 2,4-Dinitrophenol U UD 0.3 U U.700 UD U U 0.4 U 4.0 UD U U U 0.2 2,4-Dinitrotoluene U UD U U UD U U U UD U U U.0 2,6-Dinitrotoluene U UD U U UD 0.06 U 0.06 U U UD U U 0.06 U.0 2-Chloronaphthalene U UD U U UD U U U UD U U U 2-Chlorophenol U UD U U UD U U U UD U U U Methylnaphthalene 0.8 J UD U U UD J J J UD J J U Methylphenol U UD U U UD U U JD 0.0 J U U 0.00 or MDL 2-Nitroaniline 0. U 2.0 UD U 0.05 U UD U U U UD U U U or MDL 2-Nitrophenol U 3.00 UD U U 0.30 UD U U U UD U U U or MDL 3,3-Dichlorobenzidine U UD U U UD U U U UD U U U 3+4-Methylphenols U UD U U UD U U E D J J U 3-Nitroaniline U U U UD U U U UD U U U 0.0 or MDL 4,6-Dinitro-2-methylphenol U UD U U UD U U 0.00 U.000 UD U U U 4-Bromophenyl-phenylether U UD 0.06 U U UD U U U UD U U U 4-Chloro-3-methylphenol 0.5 U UD U U UD U U U UD U U U or MDL 4-Chloroaniline U UD U U UD U U U UD U U U or MDL 4-Chlorophenyl-phenylether U UD U U UD U U U UD U U U 4-Nitroaniline U UD U U UD U U U UD J U U 4-Nitrophenol 0.0 U 2.0 UD 0.0 U 0.0 U 0.2 UD U U U 0.6 UD 0.06 U 0.06 U U 0.00 or MDL Acenaphthene D U J UD U U U UD 0.0 J 0.0 J U.0 Acenaphthylene D U 0.40 J UD U U U 0.8 UD J J U 4.0 Anthracene D J JD 0.00 J 0.00 J U UD 0.80 J 0.80 J U.00 Benzo(a)anthracene D 0.30 J D 0.06 U J U UD J J 0.06 U or MDL Benzo(a)pyrene JD 0.0 J D U U U UD J U U 0.06 or MDL Benzo(b)fluoranthene D 0.00 J E D U U U UD J J U.0 Benzo(g,h,I)perylene JD U JD U U U UD J J U.0 Benzo(k)fluoranthene D U JD U U 0.0 U.00 UD 0.80 J 0.90 J U. bis(2-chloroethoxy)methane U UD U U UD 0.07 U 0.07 U U UD 0.08 U 0.08 U 0.07 U bis(2-chloroethyl)ether U UD U U UD U U U UD U U U bis(2-ethylhexyl)phthalate U UD U U UD U U 0.00 U.000 UD U 0.00 J U.0 Butylbenzylphthalate 0.6 U UD U U UD U U U UD U U U.0 Carbazole.000 J 3.00 UD U J 0.3 JD U U U UD U U U Chrysene D 0.30 J D U J U UD J J U 0.60 Dibenz(a,h)anthracene J 2.0 UD 0.05 U J 0.2 UD U U U UD U U U 0.04 or MDL Dibenzofuran JD U 0.80 J UD J 0.00 J U UD 0.20 J 0.20 J U 6.2 Diethylphthalate U 3.0 UD U U 0.3 UD U U U UD U U U 7. Dimehylphthalate 0.6 U UD U U UD U U U UD U U U 2.0 Di-n-butylphthalate 0.60 U 3.00 UD U 0.06 U 0.30 UD U U U UD U U U 8 Di-n-octyl phthalate U UD U U UD U U U UD U U U.0 Fluoranthene E D 0.2 J E D 0.40 J 0.30 J U UD J U.0 Fluorene E D J J UD 0.20 J 0.20 J U UD 0.20 J 0.0 J U.0 Hexachlorobenzene U UD U U UD U U U UD U U U 0.4 Hexachlorobutadiene U 3.00 UD U U 0.30 UD U U U UD U U U Hexachlorocyclopentadiene U UD U U UD U U U UD U U U Hexachloroethane U UD U U UD U U U UD U U U 0.4 Indeno(,2,3-cd)pyrene 3.0 J JD U 0. U.700 JD U U U UD 0.20 J 0.90 J 0.0 J 3.20 Isophorone U UD 0.06 U 0.06 U UD U U U UD U U U 4.4 Naphthalene JD U 0.60 J UD J J 0.20 J UD J J U 3.0 Nitrobenzene U UD U U UD U U 0.0 U.00 UD 0.0 U 0.0 U U or MDL N-Nitroso-di-n-propylamine U UD U U UD U U U UD 0.08 U 0.08 U U N-Nitrosodiphenylamine U UD U U UD 0.07 U 0.07 U U UD 0.08 U 0.08 U 0.07 U Pentachlorophenol U UD U U UD 0.00 U 0.00 U 0.20 U.200 UD 0.0 U 0.0 U 0.00 U.0 or MDL Phenanthrene E.000 D J D J UD U.0 Phenol 0.60 U UD 0.06 U 0.06 U 0.30 UD U U 0.3 J UD U U U 0.03 or MDL Pyrene E D J E D U UD U.0 Total SVOCs: PBL- PBL-DL PBL-2 PBL-5 TABLE 3 (CONT.) SOIL ANALYTICAL RESULTS BROOKLYN,NY PBL-5DL * Soil cleanup guidance values from NYSDEC, TAGM 4046, April 995 U =The compound was not detected at the indicated concentration. No guidance value published in this reference D = Identifies all compounds identified in an analysis at a secondary dilution factor. Highlighted concentrations exceed their respective TAGM value. MDL = Method Detection Limit PBL-7 PBL-7RE PBL-8 PBL-8DL PBL-8A PBL-8ARE PBL-9

7 TABLE 3 (CONT.) SUMMARY OF SOIL ANALYTICAL RESULTS BROOKLYN,NY PBL- PBL-2 PBL-5 PBL-7 PBL-8 PBL-8A PBL-9 TAGM Sample Depth (ft.): 5'-5.5' 6'-6.5' 8'-8.5' 7'-7.5' 8'-8.5' 9'-9.5' 4'-4.5' Soil Conc. * Metals by EPA Method 600B/747: Aluminum 6, 4,920 4,30,980 8,0 6,9 6,920 33,000 Antimony.8 JN 0.4 U 3.3 JN 0.43 U 0.5 U JN NA Arsenic Barium 39.3 E 25.3 E J 600 Beryllium 0.45 J 0.34 J 0.32 J 0.53 J J.75 Cadmium 0.4 J 0.04 U U Calcium 2, E 2,530 E 6,0 E 5,420 8,700 32,600 3,80 35,000 Chromium Cobalt JN 6.3 N JN 60 Copper , Iron 4,900 6,00 8,600 58,600 96,300 55,0 4,000 5,000 Lead Magnesium 2,460 2, 2, ,60 7,380 2,2 5,000 Manganese 5 E 205 E 303 E E 5,000 Mercury () Nickel Potassium, U 8.30 U, ,000 Selenium.5 N 0.42 U.0 J N 3.9 Silver 0.57 J 0.65 J.2 J 0.0 U U 0.47 J NA Sodium 775 N,030 N 29 JN 223 J 2, U 76 JN 8,000 Thallium U U J NA Vanadium 8.4 E 9.9 E 6 E E 300 Zinc , Total Metals 28,727 28,065 45,55 69,4 39,534 06,975 28,3 NA by the NYSDEC for background metals in the lower Hudson Valley. Background levels for lead vary widely. Average levels in undeveloped, rural areas may range from 4-6 ppm. Average background levels in metropolitan or suburban areas or near highways are much higher and typically range from ppm. Highlighted concentrations exceed their respective TAGM value. Mercury analyzed by EPA Method 747 MDL = Method Detection Limit NA = Not Analyzed N= Presumptive Evidence of a Compound E = Value exceeds instrument calibration range 7/26/2006 7/26/2006 7/25/2006 *Standards were derived from the highest of Eastern USA Background Levels, an alternative to TAGM values as reported 7/7/2006 7/20/2006

8 TABLE 3 (CONT.) SUMMARY OF SOIL ANALYTICAL RESULTS BROOKLYN,NY PBL- PBL-2 PBL-5 PBL-7 PBL-8 PBL-8A PBL-9 TAGM Sample Depth (ft.): 5'-5.5' 6'-6.5' 8'-8.5' 7'-7.5' 8'-8.5' 9'-9.5' 4'-4.5' Soil Conc. * 7/26/2006 7/26/2006 7/25/2006 7/7/2006 7/20/2006 PCBs by EPA Method 8082: AROCLOR U U U U U U U 0 () AROCLOR U U U U U U U 0 () AROCLOR U U U U U U U 0 () AROCLOR U U U U U U U 0 () AROCLOR U U U U U U U 0 () AROCLOR U U U U U U U 0 () AROCLOR U U E P U 0 () Total Petroleum Hydrocarbons (TPH) by EPA Method 805 3, NA, ND Qualitative TPH GC Fingerprint by EPA Method 805 HW HW HW M M+B M+B NA Total Organic Carbon by EPA Method 9060 >9488 3,0 >9362 NA NA NA 4700 * Soil cleanup guidance values from NYSDEC, TAGM 4046, April 995 No guidance value published in this reference Highlighted concentrations exceed their respective TAGM value. MDL = Method Detection Limit U =The compound was not detected at the indicated concentration. NA= not Analyzed. E= Value Exceeds Calibration Range HW= #6 Fuel Oil, Weathered M= W Lubricating Oil B= Some Unknown Fuel Oil P= For dual column analysis, the percent difference between the quantitated concentrations on the two columns is greater than 40%. () = This soil cleanup objective applies to subsurface concentrations to protect groundwater quality

9 TABLE 3 SUMMARY OF SOIL ANALYTICAL RESULTS CON EDISON - FORMER KENT AVENUE POWER STATION BROOKLYN, NEW YORK S-2 S-3 TAGM S-2 S-3 S-3RE TAGM Sample Depth (ft.): 2' - 2.5' 2.5' - 3' Soil Conc. * Sample Depth (ft.): 2' - 2.5' 2.5' - 3' 2.5' - 3' Soil Conc. * Volatile Organic Compounds Semi-Volatile Organic Compounds (VOCs) by EPA Method 8260: (SVOCs) by EPA Method 8270: Chloromethane Acenaphthene 0.0 J 0.20 J 0.0 J Vinyl Chloride 0.2 Acenaphthylene ND U 4 Bromomethane Anthracene J J J Chloroethane.9 Benzo(a)anthracene or MDL,-Dichloroethene 0.4 Benzo(a)pyrene J or MDL Acetone 0.2 Benzo(b)fluoranthene Carbon disulfide 2.7 Benzo(g,h,i)perylene 0.20 J J Methylene Chloride 0. Benzo(k)fluoranthene 0.2 J 0.30 J J. trans-,2-dichloroethene Chrysene ,-Dichloroethane 0.2 Dibenz(a,h)anthracene ND U 0.04 or MDL 2-Butanone 0.3 Fluoranthene Carbon Tetrachloride 0.6 Fluorene 0.0 J 0.0 J 0.0 J cis-,2-dichloroethene Indeno(,2,3-cd)pyrene 0.30 J J 3 Chloroform 0.3 Naphthalene 0.00 J 3,,-Trichloroethane 0.8 Phenanthrene Benzene 0.06 Pyrene ,2-Dichloroethane 0. Total SVOCs: Trichloroethene 0.7,2-Dichlororpropane * Soil cleanup guidance values from NYSDEC, TAGM 4046, April 995 Bromodichloromethane No guidance value published in this reference 4-Methyl-2-Pentanone.0 Highlighted concentrations exceed their respective TAGM value. Toluene.5 MDL = Method Detection Limit t-,3-dichloropropene cis-,3-dichloropropene,,2-trichloroethane D = Identifies all compounds identified in an analysis at a secondary dilution factor. 2-Hexanone Dibromochloromethane Tetrachloroethene.4 Chlorobenzene 0.6 Ethyl Benzene J J 5.5 p&m-xylenes 0.02 J J o-xylene Styrene Bromoform,,2,2-Tetrachloroethane 0.6 Total VOCs * Soil cleanup guidance values from NYSDEC, TAGM 4046, April 995 No guidance value published in this reference Highlighted concentrations exceed their respective TAGM value.

10 TABLE 3 SUMMARY OF SOIL ANALYTICAL RESULTS BROOKLYN,NY S- TAGM Sample Depth (ft.): Soil Conc. * Metals by EPA Methods 600B/747: Aluminum 4,370 33,000 Antimony NA Arsenic Barium Beryllium J.75 Cadmium J Calcium 3,620 35,000 Chromium Cobalt 4.30 J 60 Copper 32.0 Cyanide NA NA Iron 9,30 5,000 Lead 82.4 Magnesium,330 5,000 Manganese ,000 Mercury Nickel Potassium J 43,000 Selenium ND U 3.9 Silver J NA Sodium 224 J 8,000 Thallium ND U NA Vanadium Zinc 59.0 Total Metals 9,565 *Standards were derived from the highest of Eastern USA Background Levels, an alternative to TAGM values as reporte by the NYSDEC for background metals No guidance value published in this reference *Average background levels in metropolitan or suburban areas or near highways are much higher and typically range f Highlighted concentrations exceed their respective TAGM value. MDL = Method Detection Limit NA = Not Analyzed ND=Not detected

11 TABLE 3 SUMMARY OF SOIL ANALYTICAL RESULTS BROOKLYN,NY S- S-2 S-3 S-4 S-5 S-6 S-7 S-8 S-8DL S-9 S-9DL TAGM Sample Depth (ft.): 3' - 3.5' 2' - 2.5' 2.5' - 3' 3.5' - 4' 4' - 4.5' 3' - 3.5' 4.5' - 5' 3' - 3.5' 3' - 3.5' 2.5' - 3' 2.5' - 3' Soil Conc. * Concentration: PCBs by EPA Method 8082: AROCLOR 06 ND U 0 () AROCLOR 22 ND U 0 () AROCLOR 232 ND U 0 () AROCLOR 242 ND U 0 () AROCLOR 248 ND U 0 () AROCLOR 254 ND U 0 () AROCLOR E D 0 () Total Petroleum Hydrocarbons (TPH) by EPA Method NA 35.0 NA Qualitative TPH GC Fingerprint by EPA Method 805 E E E E E M E E NA E NA * Soil cleanup guidance values (subsurface) from NYSDEC, TAGM 4046, April 995 No guidance value published in this reference D = Identifies all compounds identified in an analysis at a secondary dilution factor. MDL = Method Detection Limit ND = Not Detected () = This soil cleanup objective applies to subsurface concentrations to protect groundwater quality D = Identifies all compounds identified in an analysis at a secondary dilution factor. E= No Calibrated Fuel Type Detected M= W Lubricating Oil

12 TABLE 4 SUMMARY OF GROUNDWATER ANALYTICAL RESULTS CON EDISON - FORMER KENT AVENUE GENERATING STATION BROOKLYN, NEW YORK GW- MW- MW-2 MW-2DL NYS TOGS* Dilution Rate: 0 Volatile Organic Compounds (VOCs) by EPA Method 8260: Chloromethane 5 Vinyl Chloride 2 Bromomethane 5 Chloroethane 5,-Dichloroethene 5 Acetone Carbon disulfide Methylene Chloride 5 trans-,2-dichloroethene 5,-Dichloroethane 5 2-Butanone Carbon Tetrachloride 5 cis-,2-dichloroethene 5 Chloroform 7,,-Trichloroethane 5 Benzene 40 E 340 D,2-Dichloroethane 5 Trichloroethene 5,2-Dichlororpropane 5 Bromodichloromethane 4-Methyl-2-Pentanone Toluene 5 t-,3-dichloropropene 5 cis-,3-dichloropropene 5,,2-Trichloroethane 5 2-Hexanone Dibromochloromethane 5 Tetrachloroethene 5 Chlorobenzene 5 Ethyl Benzene D 5 p&m-xylenes 4 ND U 5 o-xylene ND U 5 Styrene 5 Bromoform,,2,2-Tetrachloroethane 5 Total VOCs *As per Technical & Operational Guidance Series (TOGS).. (June 998 Reissue & April 2000 Addendum) No Guidance values nor standards found in TOGS.. or NYCRR Part ND = Non-detect E= Indicates value exceeded calibration range D = Dilution run Shaded values indicate a concentration execeding regulatory standards or guidance values

13 TABLE 4(CONT.) GROUNDWATER ANALYTICAL RESULTS BROOKLYN,NY NYS TOGS* Semi-Volatile Organic Compounds (SVOCs) by EPA Method 8270: Acenaphthene Acenaphthylene 2.6 J Anthracene 4.2 J Benzo(a)anthracene ND U Benzo(a)pyrene ND U Benzo(b)fluoranthene ND U Benzo(g,h,i)perylene ND U Benzo(k)fluoranthene ND U bis(2-ethylhexyl)phthalate ND U 2.2 J 2.9 J 5 Carbazole.5 J Chrysene ND U Dibenz(a,h)anthracene ND U Di-n-butylphthalate 2. J Fluoranthene 2.2 J ND U 2.3 J Fluorene 2.4 J Indeno(,2,3-cd)pyrene ND U Naphthalene ND U 0 Phenanthrene 7 U Pyrene.7 J ND U 2.6 J Total SVOCs: *As per Technical & Operational Guidance Series (TOGS).. (June 998 Reissue & April 2000 Addendum) No Guidance values nor standards found in TOGS.. or NYCRR Part Highlighted concentrations exceed their respective TOGM value. MDL = Method Detection Limit D = Identifies all compounds identified in an analysis at a secondary dilution factor. ND = Non-detect Concentration unit: GW- MW- MW-2 GW- MW- MW-2 NYS TOGS* PCBs by EPA Method 8082: AROCLOR 06 ND U 0.09* AROCLOR 22 ND U 0.09* AROCLOR 232 ND U 0.09* AROCLOR 242 ND U 0.09* AROCLOR 248 ND U 0.09* AROCLOR 254 ND U 0.09* AROCLOR 260 ND U 0.09* Hydrocarbons (TPH) by EPA Total Petroleum Hydrocarbons 77 NA NA Gasoline Range Organics NA ND U 70 Diesel Range Organics (DRO) NA ND U 583 Fingerprint by EPA Method E NA E MDL = Method Detection Limit ND = Not Detected NA = Not Analysed J = Compound detected in sample at concentration less than the MDL (an estimated concentration). B = Compound detected in laboratory method b * Applies to the sum of these substances No Guidance values nor standards found in TOGS.. or NYCRR Part E= No Calibrated Fuel Type Detected ND = Non-detect

14 TABLE 4 (CONT.) SUMMARY OF GROUNDWATER ANALYTICAL RESULTS BROOKLYN, NY GW- GW- MW- MW-2 FB206 NYS TOGS* Metals by EPA Methods 600B/747: (Dissolved) Aluminum,730 4,640,780 ND 2,000 Antimony 8.36 J J J ND U J 3 Arsenic ND 4.70 J J ND 25 Barium J 64. JE 245 E ND,000 Beryllium J 0.2 J J J JE 3 Cadmium.00 J J 0. J 0.60 J ND 5 Calcium 67,700 54, ,000 E 70,000 E 52 JE * Chromium J J J ND Cobalt 0.99 J ND U.030 J J ND * Copper J 4.9 J ND 200 Cyanide NA NA NA NA U NA 200 Iron 3, ,280 5,860 OR ND 300 Lead ND 25 Magnesium 3,790 J 3,40 J 7, , J 35,000 Manganese ND 300 Mercury J Nickel ND J 4.2 ND 00 Potassium 9,420 0,700 22,000 E 242,938.6 ND * Selenium ND 8.40 J ND U ND 0 Silver ND ND ND ND U ND Sodium 26,300 32,00 4,000 E 5,568,720 OR,60 JE 20,000 Thallium ND ND ND U ND ND Vanadium J J ND 00 Zinc E 70.3 E 2,000 Total Metals 4,24 02, ,262 6,3,906,370 * *As per Technical & Operational Guidance Series (TOGS).. (June 998 Reissue & April 2000 Addendum) Maximum allowable concentration in NYCRR Part No GA Standard in TOGS.. *No Class GA Standard in NYCRR Part Highlighted concentrations exceed their respective TOGS guidance value. MDL = Method Detection Limit ND = Non-detect OR = Out of range

15 TABLE 4 SUMMARY OF GROUNDWATER ANALYTICAL RESULTS BROOKLYN, NY Sample ID MW-2 MW-2DL MW-2DL2 NYS Sample ID MW-2 NYS Sampling Date 0/03/07 0/03/07 0/03/07 TOGS* Sampling Date 0/03/07 TOGS Matrix WATER WATER WATER Matrix WATER Dilution Factor.0 0 Dilution Factor.0 Units Units Volatile Organic Compounds Semi-Volatile Organic Compounds (VOCs) by EPA Method 802: (SVOCs) by EPA Method 8270: Dichlorodifluoromethane 0.2 U.2 U 6.2 U 5 Naphthalene 48 0 Chloromethane 0.08 U 0.80 U 4.0 U 5 Acenaphthene Vinyl Chloride 0.09 U 0.85 U 4.2 U 2 Fluorene.5 J Bromomethane 0.8 U.8 U 8.8 U 5 Phenanthrene 2 Chloroethane 0.46 U 4.6 U 23 U 5 Anthracene 2.6 J Trichlorofluoromethane 0.0 U.0 U 5.2 U 5 Fluoranthene.6 J,-Dichloroethene 0.9 U.9 U 9.4 U 5 Pyrene 2. J Methyl tert-butyl Ether 0.22 U 2.2 U U 0 Benzo(a)anthracene.2 U Methylene Chloride 0.58 JB 4.2 U 2 U 5 Chrysene.7 U trans-,2-dichloroethene 0.0 U 0.99 U 5.0 U 5 Benzo(b)fluoranthene U 0.002,-Dichloroethane 0.7 U.7 U 8.4 U 5 Benzo(k)fluoranthene 2.0 U Carbon Tetrachloride 0.6 U.6 U 7.8 U 5 Benzo(a)pyrene.2 U ,2-Dichloropropane 0.8 U.8 U 9. U 5 Indeno(,2,3-cd)pyrene U cis-,2-dichloroethene 0.09 U 0.92 U 4.6 U 5 Dibenz(a,h)anthracene U Bromochloromethane 0.4 U.4 U 7.0 U 5 Benzo(g,h,i)perylene. U Chloroform 0.6 U.6 U 8.0 U 7 Total Confident Conc. SVOCs 02.8,,-Trichloroethane 0.6 U.6 U 8. U 5,-Dichloropropene 0.8 U.8 U 8.8 U 5 *As per Technical & Operational Guidance Series (TOGS).. (June 998 Reissue Benzene 390 E 40 ED 520 D & April 2000 Addendum),2-Dichloroethane 0.3 U.3 U 6.4 U 5 No Guidance values nor standards found in TOGS.. or NYCRR Part Trichloroethene 0.2 U.2 U 5.8 U 5 U - The compound was not detected at the indicated concentration.,2-dichloropropane 0.5 U.5 U 7.6 U 5 J - Data indicates the presence of a compound that meets the identification criteria. Dibromomethane 0.09 U 0.92 U 4.6 U 5 The result is less than the quantitation limit but greater than zero. The reported concentration Bromodichloromethane 0.4 U.4 U 6.8 U is an estimated value. Toluene 0.43 J. U 5.4 U 5 t-,3-dichloropropene 0.0 U 0.96 U 4.8 U 5 cis-,3-dichloropropene 0.2 U.2 U 6.0 U 5,,2-Trichloroethane 0. U. U 5.6 U 5,3-Dichloropropane 0.4 U.4 U 7.2 U 5 Dibromochloromethane 0.3 U.3 U 6.5 U 5,2-Dibromoethane 0.2 U.2 U 6.0 U Tetrachloroethene 0.2 U.2 U 6. U 5 Chlorobenzene 0. U. U 5.5 U 5,,,2-Tetrachloroethane 0.5 U.5 U 7.4 U 5 Ethyl Benzene 95 E 94 D 5.7 U 5 o-xylene U 6.5 U 5 Styrene 0. U. U 5.6 U 5 Bromoform 0.09 U 0.94 U 4.7 U Isopropylbenzene U 6. U 5,,2,2-Tetrachloroethane 0.09 U 0.93 U 4.6 U 5,2,3-Trichloropropane 0.7 U.7 U 8.3 U 5 Bromobenzene 0. U. U 5.4 U 5 n-propylbenzene.3.0 U 5. U 5 2-Chlorotoluene 0.09 U 0.86 U 4.3 U 5,3,5-Trimethylbenzene U 4.4 U 5 4-Chlorotoluene 0.0 U.0 U 5.2 U 5 tert-butylbenzene 0.5 U.5 U 7.4 U 5,2,4-Trimethylbenzene 3.0 U 5.0 U 5 sec-butylbenzene 0.3 U.3 U 6.4 U 5 4-Isopropyltoluene 0.3 U.3 U 6.4 U 5,3-Dichlorobenzene 0.0 U 0.97 U 4.8 U 5,4-Dichlorobenzene 0.2 U.2 U 6.2 U 5 n-butylbenzene 0.2 U.2 U 6.2 U 5,2-Dichlorobenzene 0.08 U 0.83 U 4.2 U 5,2-Dibromo-3-Chloropropane 0.20 U 2.0 U 0 U,2,4-Trichlorobenzene 0.08 U 0.83 U 4.2 U 5 Hexachlorobutadiene 0.5 U.5 U 7.6 U 5 Naphthalene 360 E 3 ED 620 D 0,2,3-Trichlorobenzene 0.0 U 0.95 U 4.8 U 5 Total Confident VOC *As per Technical & Operational Guidance Series (TOGS).. (June 998 Reissue & April 2000 Addendum) No Guidance values nor standards found in TOGS.. or NYCRR Part U - The compound was not detected at the indicated concentration. J - Data indicates the presence of a compound that meets the identification criteria. The result is less than the quantitation limit but greater than zero. The concentration given is an approximate value. B - The analyte was found in the laboratory blank as well as the sample. This indicates possible laboratory contamination of the environmental sample. E = Exceeds equipment calibration range D = Dilution run