Sources of Contaminants, Site Uses, and RCRA Waste Determination

Remediation Waste Characterization Catch Basin/Storm Drain Cleanings Former Texas Instruments Facility 34 Forest Street and 40 Perry Avenue Attleboro, MA RTN 4-0022 This remediation waste characterization is for waste composed of sand and associated material removed from storm drains at the former Texas Instruments Facility, RTN 4-0022, Attleboro, MA. The material is primarily sand and sediment-like material generated when subsurface storm drains were cleaned in preparation for video inspection of the drains. The material was removed to allow video inspection of the drains as part of an ongoing assessment of alternatives to eliminate or mitigate contaminated dry weather flow. The portions that were cleaned are shown in the figure attached to this letter. Cleaning activities began on June 20, 2011 and were completed on July 7, 2011. The cleaned drains are located within the boundaries of an MCP site RTN 4-0022, the location of a plume of TCEcontaminated groundwater. Groundwater extraction and treatment to remediate this plume have been ongoing since 1986. Waste Material Characterization. Approximately 20 cubic yards of material ( cleanings ) were removed and placed in two rolloffs. The material is primarily fine dark-colored sand with black streaks. One sample was collected from the two rolloffs and analyzed for 8 RCRA metals, TCLP cadmium, TCLP chromium, TCLP lead, TCLP silver, hexavalent chromium, solids, conductivity, flashpoint, ignitability, ph, reactive cyanide and sulfide, redox potential, VOCs, PCBs, SVOCs, and TPH. The samples were collected by Precision Environmental Management (Mark Sargeant) with assistance from AECOM (Stan Hatfield) on July 12, 2011. Field notes from the sample collection effort and the laboratory data package are included in the Generator Pre-Qualification form and Attachments document appended to this document. The sample was a composite of grab samples from both rolloffs (four from each rolloff) with the exception of the VOC sample, for which compositing was not performed. The sample is considered to be representative of the contents of both rolloffs. The analytical data have been reviewed by AECOM and Precision Environmental. Seven of the eight RCRA metals analyzed for were detected. Silver, barium, cadmium, and chromium concentrations were elevated over values expected had the material consisted only of soil or road sand; however TCLP chromium, TCLP cadmium, TCLP lead, TCLP silver, and hexavalent chromium were not detected. VOCs Cis-1,2-DCE, TCE, trichlorotrifluoroethane; SVOCs (primarily PAHs), PCBs, and unidentified TPH were detected. No detections exceeded the acceptance criteria of the recycling facility, Commercial Paving and Recycling Corporation (Scarborough, Maine) see Generator Pre-Qualification Form Attachment A for comparison of analytical results to acceptance criteria and acceptance by the facility. Waste Description. Catch basin cleanings are typically considered to be regulated as solid waste, if they are not hazardous waste. This material is considered to be MCP remediation waste, because the cleaning of the drains is a response action associated with a release (RTN 4-0022), as described further below. Whether the cleanings should be considered environmental media (soil or sediment), debris, or uncontainerized waste is not immediately evident, based on the definitions provided in the MCP. The MCP definition of sediment and the MCP and MassDEP hazardous waste regulations (30 CMR 30.130) definitions of debris do not appear to be applicable. It is AECOM s professional opinion that the cleanings most closely fit the definition of soil. Sources of Contaminants, Site Uses, and RCRA Waste Determination Based on the characterization results the material is not a characteristic waste. The presence of trichloroethene and metals in the waste, the facility history, and site hydrology indicate the potential for

2 the material to be a listed waste, further documented below. However, a summary of this analysis is that the material is not a listed waste. Manufacturing processes used on the campus. Based on the Supplemental Phase II Report (M&E, 2006), the campus was used by Texas Instruments for manufacturing. Manufacturing processes included light assembly, stamping, plating chemistries, ceramics production, molding, a screw machine shop and tool rooms, rolling and bonding, aqueous and non-aqueous cleaning, abrading, pickling, and alloy casting. Solvents and fuel oils were stored and used on-site. Current Site Uses. Texas Instruments sold the property and vacated in 2006. The site is currently used primarily for industrial/commercial purposes. Other uses include a community college and a YMCA. Description of drain system and inputs. Based on a review of the Supplemental Phase II Report (M&E, 2006, Figures A-5 and A-9), the storm drainage network covers most of the former TI campus and discharges at permitted NPDES outfalls. Based on water level elevations at monitoring wells within the site made over many years and on computer modeling (M&E,2006), groundwater infiltrates the drainage system and creates dry-weather flow. A hydraulic divide running north and south divides the campus into two roughly equal areas. The cleaned drainage pipes are located on the west side of the divide and drain to outfall 002. Based on a review of the Phase II Report (M&E 2001, Figures 5-1 through 5-4), the presence of the groundwater extraction and treatment system on the west side of the divide has induced groundwater flow across the divide from the east. Based on a review of the Phase II Report (M&E, 2001, Figures 8-4 and 8-5), the maximum extent and concentration of contaminated groundwater is located on the west half of the divide. Therefore the dry weather flow in the cleaned areas consists of contaminated groundwater. This is confirmed by recent sampling and analysis of water within the pipes, which indicated the presence of TCE (primarily) and other chlorinated VOCs. Based on the locations of the drains, the cleanings likely consist of sand, soil, and vehicle crankcase oil and gasoline drippings, tree roots, and incidental debris deposited into catch basins. Vehicle crankcase oil would be expected to contain both metals and SVOCs. The drainpipes receive stormwater runoff from parking lots, roads, and roof drains where catch basins and connections are located. Based on a review of the Supplemental Phase II Report (M&E, 2006, Figures A-10 through A-15), building floor drains were known to have existed in Buildings 1, 3, 4, 6, 10, 11, and 12. The floor drains were connected to the roof drainage and site storm water system indicating that the primary function was non-contaminated water discharge. In the early to mid 1980s, a concerted effort was made to seal all floor drains. Due to their location within the manufacturing areas, inadvertent release of oil or hazardous materials cannot be ruled out. A conceptual site model identifying potential sources of contamination on the campus and provided in the Supplemental Phase II Report (M&E, 2006, Table 10-1), indicates materials used onsite and detected in the environment. Several releases are noted that could have entered the drain system, these are discussed below. Historically, TI discharged treated wastewater from its manufacturing processes treatment plant to the storm drain system, however the treatment plant discharged to outfall 003 located on the east side of the divide and any residual wastes would be unrelated to the area that was cleaned. Source of contamination in cleanings. No direct discharge of waste materials to the storm drain is documented. As noted above, groundwater infiltrates the drain system as dry weather flow; therefore a portion of contaminants in groundwater likely becomes adsorbed to solids and is entrained in pore water. Releases potentially impacting groundwater are listed below: As noted above, the cleaned drainpipes are located within the areas of greatest concentrations of groundwater contamination. Therefore it is likely that most of the chlorinated solvents found in the cleanings results from contaminated groundwater. The original releases of TCE to the environment are not documented but are anecdotal or are suspected based on the presence of

3 soil and groundwater contamination. Based on a review of the Supplemental Phase II Report (M&E, 2006, locations shown in Figure A-30), releases of solvents west of the hydraulic divide and in the groundwater capture zone east of the divide are listed below. o Anecdotal catastrophic release from Building 10 to a ceramic drain line leading to the duck pond in 1950s or early 1960s ( duck pond release ) o Anecdotal release from transfer pipe located in chemical stockade in west of Building 11 in late 1950s to early 1960s (east of hydraulic divide) o Suspected release from drum storage area between Buildings 3 and 6 in the 1960s (based on area of greatest GW concentrations and air photos indicating drum storage was present in this area at this time). o Suspected release from former acid neutralization lagoon in the parking lot east of Building 10 (likely used between 1960 and mid-1970s) o Suspected release from historical TCE ASTs east of Building 10 (date unknown). o Suspected release from former Augat property (40 Perry Avenue-Building 20). Electronic components manufacturing was documented at 40 Perry Avenue after 1972. Dry wells may have been used to dispose of solvents, metals, and cyanide. o Suspected release from former Augat properties (34 Perry-Building 23). Historical plating operations and manufacturing were conducted by others (date unknown). Metals were detected in groundwater associated with a reported release from a pickle and scrub line via a leaking sump in Building 3. Metals and VPH fractions were detected in groundwater associated with a scrap metal area and diesel AST south of Building 4. EPH fractions were detected in groundwater associated with a reported release of petroleum from a mineral oil line located near Building 1. Petroleum fractions were detected in groundwater associated with a leaking fuel oil tank near Building 6. Determination that material is not listed waste. The Massachusetts Hazardous Waste rules identify potentially applicable listed waste codes: F001 and F002 refer to spent halogenated solvents which would include TCE F006 through F009 refer to wastewater treatment sludges and solutions from electroplating operations U228 includes discarded commercial chemical products or discarded spill residues in soil, water, or debris; containing TCE (as defined in 310 CMR 30.160). This would apply if the material was deemed to be a soil rather than uncontainerized waste. The Interim Policy Regarding the Regulatory Status of Soils contaminated with Waste Oil of Unknown Origin and/or Hazardous Constituents, HW 93-01, provided by MassDEP, has guidance on assessing whether soil remediation waste is a listed waste. Although intended for soil, the cleanings are sufficiently similar to soil remediation waste, that the same policy is applied. In summary: The cleaning of the drains is an action taken pursuant to M.G.L. c. 21E because it was performed to allow video inspection of the drain for an assessment of alternatives to eliminate or mitigate contaminated dry weather flow. The cleanings are not characteristic wastes.

4 Based on policy HW93-01, the presence of a hazardous waste constituent as defined in 310 CMR 30.160 does not mean the soil is categorically classified as a hazardous waste. Metals and TPH contamination of cleanings are the result of undocumented direct releases of materials to the drains, contamination from a secondary source (groundwater) that had been contaminated by the original release, or from street and parking lot runoff that is not subject to RCRA. The specific source cannot be reasonably determined. Solvent contamination of cleanings is the result of undocumented direct releases of materials to the drains or contamination from a secondary source (groundwater) that had been contaminated by the original release. All releases of solvents described above are anecdotal or suspected, but not documented. The timing of the releases and the specific sources (such as a drum, a tank, or manufacturing process) cannot be reasonably determined. Based on the above, it is concluded that the cleanings described are not a listed or characteristic hazardous waste. Closure Statement Due diligence was used to characterize the storm drain cleanings for the presence of listed hazardous waste and characteristic hazardous waste. Due diligence did not reveal the presence of a listed hazardous waste nor did chemical testing performed on the cleanings exhibit the characteristic of a hazardous waste. Based on my review of the analytical data from the sample collected of the cleanings, including the laboratory QA/QC data, and comparison of these results with the acceptance criteria of the recycling facility (CPRC, Scarborough, Maine), this material meets the criteria for recycling at this facility. AECOM has determined that the sample collected adequately and completely characterizes the cleanings.

5 References Metcalf and Eddy, 2001 (M&E, 2001). DEP Site Number 4-0022. Massachusetts Contingency Plan Phase II Comprehensive Site Assessment, June, 2001. Metcalf and Eddy, 2006 (M&E, 2006). RTNs 4-0022, 4-0559, 4-16018, 4-16019. Massachusetts Contingency Plan Supplemental Phase II Comprehensive Site Assessment, Revised RAO Statement, March 2006.

6 Attachments Figure: 2011 Storm Drain Investigation Generator Pre-Qualification Form and Attachments: Commercial Paving and Recycling Corporation (CPRC), Scarborough, Maine

PLAN SCALE: 1"=60' NOTES: 1. INFORMATION PRESENTED IS A COMBINATION OF EXISTING DATA AND FIELD OBSERVATION. SOME INFORMATION HAS BEEN ADJUSTED MANUALLY BASED ON FIELD VERIFICATION.

ATTACHMENT A - GENERATOR PRE-QUALIFICATION FORM ADDITIONAL WASTE CHARACTERIZATION PARAMETERS * SAMPLE RESULTS & ACCEPTANCE LIMITS WASTE CHARACTERIZATION: PARAMETER SAMPLE RESULTS ACCEPTANCE LIMITS CRS Required Halocarbons When TOX either exceeds 100 ppm or is not being done, the laboratory needs to do the following: Analyze by USEPA Method 8260. Calibrate for and report the following compounds: Result Limit Tetrachloroethylene mg/kg <7 mg/kg Methylene Chloride mg/kg <2 mg/kg Trichloroethylene mg/kg <5 mg/kg 1,1,1-Trichloroethane mg/kg <2 mg/kg Chlorobenzene mg/kg <1000 mg/kg 1,2-Dichlorobenzene mg/kg <2 mg/kg 1,1,2-Trichloroethane mg/kg <2 mg/kg Carbon Tetrachloride mg/kg <5 mg/kg If present, report the following as tentatively identified compounds with the concentration estimated from the nearest internal standard assuming a relative response factor of 1. Flag the result with a J qualifier: 1,1,2-Trichloro-1,2,2-Trifluoroethane mg/kg <2 mg/kg Trichlorofluoroethane mg/kg <2 mg/kg Chlorinated Fluorocarbons mg/kg <2 mg/kg Semi-VOCs (from USEPA TCLP list)** Total mg/kg TCLP mg/l Total ** TCLP *** O-Cresol <2000 mg/kg <200 mg/l M-Cresol <2000 mg/kg <200 mg/l P-Cresol <2000 mg/kg <200 mg/l Total Cresols <2000 mg/kg <200 mg/l 1,4-Dichlorobenzene <75 mg/kg <7.5 mg/l 2,4-Dinitrotoluene <1.3 mg/kg <0.13 mg/l Hexachlorobenzene <1.3 mg/kg <0.13 mg/l Hexachlorobutadiene <5 mg/kg <0.5 mg/l Hexachloroethane <30 mg/kg <3 mg/l Nitrobenzene <20 mg/kg <2 mg/l Pentachlorophenol <1000 mg/kg <100 mg/l Pyridine <50 mg/kg <5 mg/l 2,4,5-Trichlorophenol <4000 mg/kg <400 mg/l 2,4,6-Trichlorophenol <20 mg/kg <2 mg/l 8 RCRA Metals ** Total mg/kg TCLP mg/l Total ** TCLP *** Arsenic <50 mg/kg <5.0 mg/l Barium <1000 mg/kg <100 mg/l Cadmium <10 mg/kg <1.0 mg/l Chromium <50 mg/kg <5.0 mg/l Lead <50 mg/kg <5.0 mg/l Mercury <2 mg/kg <0.2 mg/l Selenium <10 mg/kg <1.0 mg/l Silver <50 mg/kg <5.0 mg/l * Check Generator Pre-Qualification Form for parameters that apply & Table I for analytical methods and hold times. ** Testing for TCLP or Totals is acceptable. If analytical results for Totals exceed the acceptance limit, TCLP analysis is required for that compound. *** If less than 6 composite samples are submitted, the TCLP acceptance criteria is lowered to 50 of listed limits. Form: PQAA Rev. 09/16/96

Wednesday, August 31, 2011 Attn: Mr Chris Paulino Precision Environmental Mgnt. 3 Survey Circle North Billerica, MA 01862 Project ID: AECOM Sample ID#s: BA51801 This laboratory is in compliance with the QA/QC procedures outlined in EPA 600/4-79- 019, Handbook for Analytical Quality in Water and Waste Water, March 1979, SW846 QA/QC and NELAC requirements of procedures used. This report contains results for the parameters tested, under the sampling conditions described on the Chain Of Custody, as received by the laboratory. A scanned version of the COC form accompanies the analytical report and is an exact duplicate of the original. Enclosed are revised Analysis Report pages. Please replace and discard the original pages. If you have any questions concerning this testing, please do not hesitate to contact Phoenix Client Services at ext. 200. Sincerely yours, Phyllis Shiller Laboratory Director NELAC - #NY11301 CT Lab Registration #PH-0618 MA Lab Registration #MA-CT-007 ME Lab Registration #CT-007 NH Lab Registration #213693-A,B NJ Lab Registration #CT-003 NY Lab Registration #11301 PA Lab Registration #68-03530 RI Lab Registration #63 VT Lab Registration #VT11301 587 East Middle Turnpike, P.O. Box 370, Manchester, CT 06040 Telephone (860) 645-1102 Fax (860) 645-0823

Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 Analysis Report August 31, 2011 FOR: Attn: Mr Chris Paulino Precision Environmental Mgnt. 3 Survey Circle North Billerica, MA 01862 Sample Information Matrix: Location Code: Rush Request: P.O.#: Project ID: Client ID: SOLID PEM AECOM DRAIN RUSH AECOM AECOM STORM DRAIN 1 Custody Information Collected by: Received by: Analyzed by: MS SW Laboratory Data see "By" below Date Time 07/12/11 8:00 07/12/11 16:43 SDG ID: GBA51801 Phoenix ID: BA51801 Parameter Result RL Units Date Time By Reference Silver 56.6 0.46 mg/kg 07/13/11 LK 6010/200.7 Arsenic 7.98 0.93 mg/kg 07/13/11 LK 6010/200.7 Barium 423 0.46 mg/kg 07/13/11 LK 6010/200.7 Cadmium 14.5 0.46 mg/kg 07/13/11 LK 6010/200.7 Chromium 473 4.6 mg/kg 07/14/11 EK 6010/200.7 Mercury 1.40 0.10 mg/kg 07/13/11 RS SW-7471 Lead 168 0.46 mg/kg 07/13/11 LK 6010/200.7 Selenium < 1.9 1.9 mg/kg 07/13/11 LK 6010/200.7 TCLP Silver < 0.10 0.10 mg/l 07/19/11 LK SW6010 TCLP Cadmium < 0.050 0.050 mg/l 07/19/11 LK SW6010 TCLP Chromium < 0.10 0.10 mg/l 07/19/11 LK SW6010 TCLP Lead < 0.10 0.10 mg/l 07/19/11 LK SW6010 Percent Solid 70 07/12/11 JL E160.3 Conductivity - Soil Matrix 290 5 umhos/cm 07/14/11 JR SM2510B Flash Point >200 200 degree F 07/18/11 Y SW1010 Chromium, Hexavalent < 0.57 0.57 mg/kg 07/21/11 CL SW3060/7196 Ignitability Passed 140 deg F 07/18/11 Y SW1010 ph - Soil 6.39 0.10 PH 07/12/11 1:11 B/E/E 4500-H B/9045 Reactivity Cyanide < 7.1 7.1 mg/kg 07/13/11 KL/GD SW 846-7.3 7 Reactivity Sulfide < 20 20 mg/kg 07/13/11 KL/GD SW846-7.3 7 Reactivity Negative Pos/Neg 07/13/11 KL/GD SW 846-7.3 7 Redox Potential 150 1.0 mv 07/21/11 EG SM2580B 1,7 Soil Extraction for PCB Completed 07/12/11 NB/F SW3545 Soil Extraction for SVOA Completed 07/12/11 NC/F SW3545 Mercury Digestion Completed 07/13/11 SW7471 TCLP Extraction for Metals Completed 07/18/11 E EPA 1311 Total Metals Digest Completed 07/12/11 AG SW846-3050 TCLP Metals Digestion Completed 07/19/11 SW3005 Page 1 of 6 Ver 3

Project ID: AECOM Client ID: AECOM STORM DRAIN 1 Phoenix I.D.: BA51801 Parameter Result RL Units Date Time By Reference Extraction of TPH SM Completed 07/12/11 NC/D 3545/3550 Field Extraction Completed 07/12/11 MS SW5035 Volatiles 1,1,1,2-Tetrachloroethane ND 1,1,1-Trichloroethane ND 1,1,2,2-Tetrachloroethane ND 1,1,2-Trichloroethane ND 1,1-Dichloroethane ND 1,1-Dichloroethene ND 1,1-Dichloropropene ND 1,2,3-Trichlorobenzene ND 1,2,3-Trichloropropane ND 1,2,4-Trichlorobenzene ND 1,2,4-Trimethylbenzene ND 1,2-Dibromo-3-chloropropane ND 1,2-Dichlorobenzene ND 1,2-Dichloroethane ND 1,2-Dichloropropane ND 1,3,5-Trimethylbenzene ND 1,3-Dichlorobenzene ND 1,3-Dichloropropane ND 1,4-Dichlorobenzene ND 2,2-Dichloropropane ND 2-Chlorotoluene ND 2-Hexanone ND 1800 ug/kg 07/13/11 H/J SW8260 2-Isopropyltoluene ND 4-Chlorotoluene ND 4-Methyl-2-pentanone ND 1800 ug/kg 07/13/11 H/J SW8260 Acetone ND 7300 ug/kg 07/13/11 H/J SW8260 Acrylonitrile ND 730 ug/kg 07/13/11 H/J SW8260 Benzene ND Bromobenzene ND Bromochloromethane ND Bromodichloromethane ND Bromoform ND Bromomethane ND Carbon Disulfide ND Carbon tetrachloride ND Chlorobenzene ND Chloroethane ND Chloroform ND Chloromethane ND cis-1,2-dichloroethene 1200 cis-1,3-dichloropropene ND Dibromochloromethane ND Dibromoethane ND Dibromomethane ND Dichlorodifluoromethane ND Ethylbenzene ND Page 2 of 6 Ver 3

Project ID: AECOM Client ID: AECOM STORM DRAIN 1 Phoenix I.D.: BA51801 Parameter Result RL Units Date Time By Reference Hexachlorobutadiene ND Isopropylbenzene ND m&p-xylene ND Methyl Ethyl Ketone ND 4400 ug/kg 07/13/11 H/J SW8260 Methyl t-butyl ether (MTBE) ND Methylene chloride ND 730 ug/kg 07/13/11 H/J SW8260 Naphthalene ND n-butylbenzene ND n-propylbenzene ND o-xylene ND p-isopropyltoluene ND sec-butylbenzene ND Styrene ND tert-butylbenzene ND Tetrachloroethene ND Tetrahydrofuran (THF) ND 730 ug/kg 07/13/11 H/J SW8260 Toluene ND Total Xylenes ND trans-1,2-dichloroethene ND trans-1,3-dichloropropene ND trans-1,4-dichloro-2-butene ND 730 ug/kg 07/13/11 H/J SW8260 Trichloroethene 1900 Trichlorofluoromethane ND Trichlorotrifluoroethane 920 Vinyl chloride ND QA/QC Surrogates 1,2-dichlorobenzene-d4 98 07/13/11 H/J 70-130 Bromofluorobenzene 98 07/13/11 H/J 70-130 Dibromofluoromethane 93 07/13/11 H/J 70-130 Toluene-d8 102 07/13/11 H/J 70-130 Semivolatiles 1,2,4,5-Tetrachlorobenzene ND 1,2,4-Trichlorobenzene ND 1,2-Dichlorobenzene ND 1,3-Dichlorobenzene ND 1,4-Dichlorobenzene ND 2,4,5-Trichlorophenol ND 2,4,6-Trichlorophenol ND 2,4-Dichlorophenol ND 2,4-Dimethylphenol ND 2,4-Dinitrophenol ND 750 ug/kg 07/14/11 DD SW 8270 2,4-Dinitrotoluene ND 2,6-Dinitrotoluene ND 2-Chloronaphthalene ND 2-Chlorophenol ND 2-Methylnaphthalene 1200 2-Methylphenol (o-cresol) ND 2-Nitroaniline ND 750 ug/kg 07/14/11 DD SW 8270 2-Nitrophenol ND Page 3 of 6 Ver 3

Project ID: AECOM Client ID: AECOM STORM DRAIN 1 Phoenix I.D.: BA51801 Parameter Result RL Units Date Time By Reference 3&4-Methylphenol (m&p-cresol) ND 470 ug/kg 07/14/11 DD SW 8270 3,3'-Dichlorobenzidine ND 570 ug/kg 07/14/11 DD SW 8270 3-Nitroaniline ND 750 ug/kg 07/14/11 DD SW 8270 4,6-Dinitro-2-methylphenol ND 1400 ug/kg 07/14/11 DD SW 8270 4-Bromophenyl phenyl ether ND 470 ug/kg 07/14/11 DD SW 8270 4-Chloro-3-methylphenol ND 4-Chloroaniline ND 4-Chlorophenyl phenyl ether ND 4-Nitroaniline ND 750 ug/kg 07/14/11 DD SW 8270 4-Nitrophenol ND 1400 ug/kg 07/14/11 DD SW 8270 Acenaphthene 870 Acenaphthylene ND Acetophenone ND Aniline ND 1400 ug/kg 07/14/11 DD SW 8270 Anthracene 1300 Azobenzene ND 470 ug/kg 07/14/11 DD SW 8270 Benz(a)anthracene 4500 Benzidine ND 570 ug/kg 07/14/11 DD SW 8270 Benzo(a)pyrene 4400 Benzo(b)fluoranthene 6900 Benzo(ghi)perylene 2100 Benzo(k)fluoranthene 2000 Benzoic acid ND 1400 ug/kg 07/14/11 DD SW 8270 Benzyl butyl phthalate ND Bis(2-chloroethoxy)methane ND Bis(2-chloroethyl)ether ND 470 ug/kg 07/14/11 DD SW 8270 Bis(2-chloroisopropyl)ether ND Bis(2-ethylhexyl)phthalate 1900 Carbazole 1400 710 ug/kg 07/14/11 DD SW 8270 Chrysene 4900 Dibenz(a,h)anthracene 590 Dibenzofuran 610 Diethyl phthalate ND Dimethylphthalate ND Di-n-butylphthalate ND Di-n-octylphthalate ND Fluoranthene 6600 Fluorene 950 Hexachlorobenzene ND Hexachlorobutadiene ND Hexachlorocyclopentadiene ND Hexachloroethane ND Indeno(1,2,3-cd)pyrene 2000 Isophorone ND Naphthalene 470 Nitrobenzene ND N-Nitrosodimethylamine ND 470 ug/kg 07/14/11 DD SW 8270 N-Nitrosodi-n-propylamine ND N-Nitrosodiphenylamine ND 470 ug/kg 07/14/11 DD SW 8270 Pentachloronitrobenzene ND 470 ug/kg 07/14/11 DD SW 8270 Page 4 of 6 Ver 3

Project ID: AECOM Client ID: AECOM STORM DRAIN 1 Phoenix I.D.: BA51801 Parameter Result RL Units Date Time By Reference Pentachlorophenol ND 470 ug/kg 07/14/11 DD SW 8270 Phenanthrene 6300 Phenol ND Pyrene 5200 Pyridine ND 470 ug/kg 07/14/11 DD SW 8270 QA/QC Surrogates 2,4,6-Tribromophenol 77 07/14/11 DD 15-110 2-Fluorobiphenyl 63 07/14/11 DD 15-110 2-Fluorophenol 73 07/14/11 DD 15-110 Nitrobenzene-d5 71 07/14/11 DD 15-110 Phenol-d5 73 07/14/11 DD 15-110 Terphenyl-d14 52 07/14/11 DD 15-110 Polychlorinated Biphenyls PCB-1016 ND 94 ug/kg 07/14/11 MH SW 8082 PCB-1221 ND 94 ug/kg 07/14/11 MH SW 8082 PCB-1232 ND 94 ug/kg 07/14/11 MH SW 8082 PCB-1242 ND 94 ug/kg 07/14/11 MH SW 8082 PCB-1248 ND 94 ug/kg 07/14/11 MH SW 8082 PCB-1254 130 94 ug/kg 07/14/11 MH SW 8082 PCB-1260 ND 94 ug/kg 07/14/11 MH SW 8082 PCB-1262 ND 94 ug/kg 07/14/11 MH SW 8082 PCB-1268 ND 94 ug/kg 07/14/11 MH SW 8082 QA/QC Surrogates DCBP 72 07/14/11 MH 40-140 TCMX 62 07/14/11 MH 40-140 TPH by GC (Extractable Products) Fuel Oil #2 / Diesel Fuel ND 470 mg/kg 07/14/11 JRB 8015M (C9-C36) Fuel Oil #4 ND 470 mg/kg 07/14/11 JRB 8015M (C9-C36) Fuel Oil #6 ND 470 mg/kg 07/14/11 JRB 8015M (C9-C36) Kerosene ND 470 mg/kg 07/14/11 JRB 8015M (C9-C36) Motor Oil ** 470 mg/kg 07/14/11 JRB 8015M (C9-C36) Other Oil (Cutting & Lubricating) ND 470 mg/kg 07/14/11 JRB 8015M (C9-C36) Unidentified 2800 470 mg/kg 07/14/11 JRB 8015M (C9-C36) QA/QC Surrogates n-pentacosane Diluted Out 07/14/11 JRB 50-150 Page 5 of 6 Ver 3

Project ID: AECOM Client ID: AECOM STORM DRAIN 1 Phoenix I.D.: BA51801 Parameter Result RL Units Date Time By Reference 1 = This parameter is not certified by NY NELAC for this matrix. NY NELAC does not offer certification for all parameters. 7 = This parameter is not certified by MA for this matrix. Comments: Ignitability is based solely on the results of the closed cup flashpoint analysis performed above. The reactivity, reported above, is based only on the EPA Interim Guidance for Reactive Cyanide and Reactive Sulfide. This method is no longer listed in the current version of SW-846. **Petroleum hydrocarbon chromatogram was not a perfect match with any of the standards, but most closely resembles motor oil. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. ND=Not detected BDL=Below Detection Level RL=Reporting Level This report must not be reproduced except in full as defined by the attached chain of custody. Phyllis Shiller, Laboratory Director August 31, 2011 Page 6 of 6 Ver 3

QA/QC Report August 31, 2011 Parameter Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 Blank QA/QC Data LCS LCSD LCS MS Rec MS Dup Rec SDG I.D.: GBA51801 Rec Limits Limits QA/QC Batch 180592, QC Sample No: BA51359 (BA51801) Volatiles 1,1,1,2-Tetrachloroethane ND 107 93 14.0 91 87 4.5 70-130 30 1,1,1-Trichloroethane ND 109 96 12.7 90 97 7.5 70-130 30 1,1,2,2-Tetrachloroethane ND 103 89 14.6 101 101 0.0 70-130 30 1,1,2-Trichloroethane ND 100 91 9.4 86 88 2.3 70-130 30 1,1-Dichloroethane ND 97 99 2.0 81 102 23.0 70-130 30 1,1-Dichloroethene ND 107 97 9.8 88 95 7.7 70-130 30 1,1-Dichloropropene ND 100 90 10.5 84 86 2.4 70-130 30 1,2,3-Trichlorobenzene ND 109 91 18.0 48 44 8.7 70-130 30 m 1,2,3-Trichloropropane ND 106 91 15.2 107 117 8.9 70-130 30 1,2,4-Trichlorobenzene ND 102 89 13.6 51 48 6.1 70-130 30 m 1,2,4-Trimethylbenzene ND 104 89 15.5 86 84 2.4 70-130 30 1,2-Dibromo-3-chloropropane ND 110 100 9.5 95 96 1.0 70-130 30 1,2-Dichlorobenzene ND 104 90 14.4 77 78 1.3 70-130 30 1,2-Dichloroethane ND 102 91 11.4 90 96 6.5 70-130 30 1,2-Dichloropropane ND 101 90 11.5 86 90 4.5 70-130 30 1,3,5-Trimethylbenzene ND 106 91 15.2 88 86 2.3 70-130 30 1,3-Dichlorobenzene ND 105 92 13.2 78 78 0.0 70-130 30 1,3-Dichloropropane ND 105 91 14.3 92 92 0.0 70-130 30 1,4-Dichlorobenzene ND 103 89 14.6 77 77 0.0 70-130 30 2,2-Dichloropropane ND 97 101 4.0 92 98 6.3 70-130 30 2-Chlorotoluene ND 105 90 15.4 89 88 1.1 70-130 30 2-Hexanone ND 81 73 10.4 64 68 6.1 70-130 30 m 2-Isopropyltoluene ND 106 94 12.0 85 83 2.4 70-130 30 4-Chlorotoluene ND 104 88 16.7 87 87 0.0 70-130 30 4-Methyl-2-pentanone ND 102 88 14.7 80 84 4.9 70-130 30 Acetone ND 69 74 7.0 58 77 28.1 70-130 30 l,m Acrylonitrile ND 94 105 11.1 78 101 25.7 70-130 30 Benzene ND 103 91 12.4 87 90 3.4 70-130 30 Bromobenzene ND 106 90 16.3 93 95 2.1 70-130 30 Bromochloromethane ND 97 106 8.9 97 107 9.8 70-130 30 Bromodichloromethane ND 108 97 10.7 89 94 5.5 70-130 30 Bromoform ND 107 99 7.8 85 87 2.3 70-130 30 Bromomethane ND 97 86 12.0 81 87 7.1 70-130 30 Carbon Disulfide ND 112 99 12.3 83 90 8.1 70-130 30 Carbon tetrachloride ND 108 102 5.7 90 94 4.3 70-130 30 Chlorobenzene ND 104 92 12.2 83 84 1.2 70-130 30 Chloroethane ND 106 96 9.9 88 97 9.7 70-130 30 Chloroform ND 98 102 4.0 95 102 7.1 70-130 30 Chloromethane ND 100 90 10.5 81 89 9.4 70-130 30 cis-1,2-dichloroethene ND 108 115 6.3 89 101 12.6 70-130 30 cis-1,3-dichloropropene ND 106 93 13.1 85 88 3.5 70-130 30 Page 3 of 6

QA/QC Data SDG I.D.: GBA51801 Parameter Blank LCS LCSD LCS MS Rec MS Dup Rec Rec Limits Dibromochloromethane ND 108 95 12.8 90 93 3.3 70-130 30 Dibromoethane ND 100 92 8.3 83 89 7.0 70-130 30 Dibromomethane ND 103 92 11.3 85 93 9.0 70-130 30 Dichlorodifluoromethane ND 83 79 4.9 77 85 9.9 70-130 30 Ethylbenzene ND 102 90 12.5 84 84 0.0 70-130 30 Limits Hexachlorobutadiene ND 101 86 16.0 51 48 6.1 70-130 30 m Isopropylbenzene ND 108 94 13.9 95 95 0.0 70-130 30 m&p-xylene ND 103 90 13.5 82 79 3.7 70-130 30 Methyl ethyl ketone ND 87 79 9.6 70 76 8.2 70-130 30 Methyl t-butyl ether (MTBE) ND 110 100 9.5 94 98 4.2 70-130 30 Methylene chloride ND 93 84 10.2 81 87 7.1 70-130 30 Naphthalene ND 108 93 14.9 58 52 10.9 70-130 30 m n-butylbenzene ND 103 90 13.5 67 67 0.0 70-130 30 m n-propylbenzene ND 102 89 13.6 89 90 1.1 70-130 30 o-xylene ND 105 92 13.2 83 81 2.4 70-130 30 p-isopropyltoluene ND 107 93 14.0 78 78 0.0 70-130 30 sec-butylbenzene ND 105 91 14.3 81 80 1.2 70-130 30 Styrene ND 104 92 12.2 79 77 2.6 70-130 30 tert-butylbenzene ND 107 93 14.0 91 89 2.2 70-130 30 Tetrachloroethene ND 104 89 15.5 81 80 1.2 70-130 30 Tetrahydrofuran (THF) ND 110 95 14.6 88 96 8.7 70-130 30 Toluene ND 101 91 10.4 82 87 5.9 70-130 30 trans-1,2-dichloroethene ND 95 85 11.1 89 94 5.5 70-130 30 trans-1,3-dichloropropene ND 107 94 12.9 82 88 7.1 70-130 30 trans-1,4-dichloro-2-butene ND 113 100 12.2 96 100 4.1 70-130 30 Trichloroethene ND 104 91 13.3 84 87 3.5 70-130 30 Trichlorofluoromethane ND 111 100 10.4 90 97 7.5 70-130 30 Trichlorotrifluoroethane ND 112 101 10.3 86 93 7.8 70-130 30 Vinyl chloride ND 105 95 10.0 85 92 7.9 70-130 30 1,2-dichlorobenzene-d4 99 98 99 1.0 98 99 1.0 70-130 30 Bromofluorobenzene 96 98 98 0.0 92 91 1.1 70-130 30 Dibromofluoromethane 102 106 111 4.6 105 111 5.6 70-130 30 Toluene-d8 99 98 99 1.0 97 101 4.0 70-130 30 Comment: Additional 8260 criteria: 10 of compounds can be outside of acceptance criteria as long as recovery is 10. QA/QC Batch 180498, QC Sample No: BA51783 (BA51801) Polychlorinated Biphenyls PCB-1016 ND 103 104 1.0 95 116 19.9 40-140 20 PCB-1221 ND 40-140 20 PCB-1232 ND 40-140 20 PCB-1242 ND 40-140 20 PCB-1248 ND 40-140 20 PCB-1254 ND 40-140 20 PCB-1260 ND 100 102 2.0 104 115 10.0 40-140 20 PCB-1262 ND 40-140 20 PCB-1268 ND 40-140 20 DCBP (Surrogate Rec) 89 90 92 2.2 70 78 10.8 40-140 20 TCMX (Surrogate Rec) 84 89 93 4.4 83 91 9.2 40-140 20 QA/QC Batch 180510, QC Sample No: BA51783 (BA51801) TPH by GC (Extractable Products) Ext. Petroleum HC ND 70 80 13.3 85 88 3.5 50-150 20 Page 4 of 6

QA/QC Data SDG I.D.: GBA51801 Parameter Blank LCS LCSD LCS MS Rec MS Dup Rec Rec Limits n-pentacosane 96 74 72 2.7 110 118 7.0 50-150 20 QA/QC Batch 180534, QC Sample No: BA51783 (BA51801) Semivolatiles 1,2,4,5-Tetrachlorobenzene ND 63 69 9.1 93 89 4.4 30-130 30 1,2,4-Trichlorobenzene ND 62 67 7.8 89 85 4.6 30-130 30 1,2-Dichlorobenzene ND 64 69 7.5 87 82 5.9 30-130 30 1,3-Dichlorobenzene ND 63 67 6.2 83 77 7.5 30-130 30 1,4-Dichlorobenzene ND 63 67 6.2 84 79 6.1 30-130 30 2,4,5-Trichlorophenol ND 68 74 8.5 106 107 0.9 30-130 30 2,4,6-Trichlorophenol ND 73 80 9.2 109 108 0.9 30-130 30 2,4-Dichlorophenol ND 68 74 8.5 99 97 2.0 30-130 30 2,4-Dimethylphenol ND 47 52 10.1 75 76 1.3 30-130 30 Limits 2,4-Dinitrophenol ND 17 12 34.5 41 13 103.7 30-130 30 l,m,r 2,4-Dinitrotoluene ND 71 80 11.9 98 102 4.0 30-130 30 2,6-Dinitrotoluene ND 71 78 9.4 98 98 0.0 30-130 30 2-Chloronaphthalene ND 66 73 10.1 92 88 4.4 30-130 30 2-Chlorophenol ND 63 68 7.6 89 87 2.3 30-130 30 2-Methylnaphthalene ND 66 71 7.3 97 95 2.1 30-130 30 2-Methylphenol (o-cresol) ND 62 67 7.8 90 90 0.0 30-130 30 2-Nitroaniline ND >150 >150 NC 111 122 9.4 30-130 30 l 2-Nitrophenol ND 72 78 8.0 104 104 0.0 30-130 30 3&4-Methylphenol (m&p-cresol) ND 62 67 7.8 88 88 0.0 30-130 30 3,3'-Dichlorobenzidine ND 56 63 11.8 NC NC NC 30-130 30 3-Nitroaniline ND >150 >150 NC 62 70 12.1 30-130 30 l 4,6-Dinitro-2-methylphenol ND 69 71 2.9 60 26 79.1 30-130 30 m,r 4-Bromophenyl phenyl ether ND 69 76 9.7 83 79 4.9 30-130 30 4-Chloro-3-methylphenol ND 67 73 8.6 99 104 4.9 30-130 30 4-Chloroaniline ND 83 89 7.0 16 16 0.0 30-130 30 m 4-Chlorophenyl phenyl ether ND 66 73 10.1 95 95 0.0 30-130 30 4-Nitroaniline ND 70 76 8.2 92 103 11.3 30-130 30 4-Nitrophenol ND 83 98 16.6 NC NC NC 30-130 30 Acenaphthene ND 67 74 9.9 95 94 1.1 30-130 30 Acenaphthylene ND 65 71 8.8 91 90 1.1 30-130 30 Acetophenone ND 63 68 7.6 89 87 2.3 30-130 30 Aniline ND N/A N/A NC N/A N/A NC 30-130 30 Anthracene ND 71 77 8.1 98 96 2.1 30-130 30 Azobenzene ND 63 69 9.1 89 97 8.6 30-130 30 Benz(a)anthracene ND 69 76 9.7 101 99 2.0 30-130 30 Benzidine ND 61 84 31.7 NC NC NC 30-130 30 r Benzo(a)pyrene ND 71 80 11.9 96 95 1.0 30-130 30 Benzo(b)fluoranthene ND 75 82 8.9 105 102 2.9 30-130 30 Benzo(ghi)perylene ND 69 76 9.7 120 102 16.2 30-130 30 Benzo(k)fluoranthene ND 74 84 12.7 96 94 2.1 30-130 30 Benzoic acid ND N/A N/A NC N/A N/A NC 30-130 30 Benzyl butyl phthalate ND 65 73 11.6 120 118 1.7 30-130 30 Bis(2-chloroethoxy)methane ND 64 69 7.5 91 92 1.1 30-130 30 Bis(2-chloroethyl)ether ND 63 67 6.2 87 86 1.2 30-130 30 Bis(2-chloroisopropyl)ether ND 61 65 6.3 83 89 7.0 30-130 30 Bis(2-ethylhexyl)phthalate ND 65 71 8.8 94 96 2.1 30-130 30 Carbazole ND 134 148 9.9 NC NC NC 30-130 30 l Chrysene ND 68 75 9.8 101 99 2.0 30-130 30 Dibenz(a,h)anthracene ND 71 79 10.7 113 102 10.2 30-130 30 Page 5 of 6

Parameter Blank QA/QC Data LCS LCSD LCS MS Rec MS Dup Rec SDG I.D.: GBA51801 Rec Limits Dibenzofuran ND 65 72 10.2 94 93 1.1 30-130 30 Diethyl phthalate ND 66 73 10.1 96 98 2.1 30-130 30 Dimethylphthalate ND 67 74 9.9 94 93 1.1 30-130 30 Di-n-butylphthalate ND 66 73 10.1 99 94 5.2 30-130 30 Di-n-octylphthalate ND 64 68 6.1 86 88 2.3 30-130 30 Fluoranthene ND 74 84 12.7 119 96 21.4 30-130 30 Fluorene ND 67 74 9.9 99 102 3.0 30-130 30 Hexachlorobenzene ND 69 76 9.7 84 86 2.4 30-130 30 Hexachlorobutadiene ND 67 74 9.9 94 88 6.6 30-130 30 Hexachlorocyclopentadiene ND 47 60 24.3 NC NC NC 30-130 30 Hexachloroethane ND 63 69 9.1 71 56 23.6 30-130 30 Indeno(1,2,3-cd)pyrene ND 70 78 10.8 116 104 10.9 30-130 30 Isophorone ND 52 56 7.4 73 74 1.4 30-130 30 Naphthalene ND 65 70 7.4 95 92 3.2 30-130 30 Nitrobenzene ND 66 71 7.3 89 90 1.1 30-130 30 N-Nitrosodimethylamine ND 56 59 5.2 71 72 1.4 30-130 30 N-Nitrosodi-n-propylamine ND 63 68 7.6 86 89 3.4 30-130 30 N-Nitrosodiphenylamine ND 72 79 9.3 106 112 5.5 30-130 30 Pentachloronitrobenzene ND 70 77 9.5 89 85 4.6 30-130 30 Pentachlorophenol ND 78 90 14.3 NC NC NC 30-130 30 Phenanthrene ND 68 75 9.8 101 99 2.0 30-130 30 Phenol ND 66 71 7.3 93 93 0.0 30-130 30 Pyrene ND 75 86 13.7 109 86 23.6 30-130 30 Pyridine ND 49 52 5.9 48 38 23.3 30-130 30 Limits 2,4,6-Tribromophenol 98 75 82 8.9 99 112 12.3 15-110 30 m 2-Fluorobiphenyl 72 63 69 9.1 85 81 4.8 15-110 30 2-Fluorophenol 72 62 66 6.3 84 83 1.2 15-110 30 Nitrobenzene-d5 76 64 68 6.1 85 86 1.2 15-110 30 Phenol-d5 72 62 66 6.3 84 86 2.4 15-110 30 Terphenyl-d14 81 78 92 16.5 95 74 24.9 15-110 30 Comment: Additional 8270 criteria: 10 of compounds can be outside of acceptance criteria as long as recovery is at least 10. (Acid surrogates acceptance range for aqueous samples: 10-110, for soils 30-130) l = This parameter is outside laboratory lcs/lcsd specified recovery limits. m = This parameter is outside laboratory ms/msd specified recovery limits. r = This parameter is outside laboratory rpd specified recovery limits. If there are any questions regarding this data, please call Phoenix Client Services at extension 200. - Relative Percent Difference LCS - Laboratory Control Sample LCSD - Laboratory Control Sample Duplicate MS - Matrix Spike MS Dup - Matrix Spike Duplicate NC - No Criteria Phyllis Shiller, Laboratory Director August 31, 2011 Page 6 of 6

Wednesday, August 31, 2011 Page 1 of 2 Sample Criteria Exceedences Report Requested Criteria: CAM SampNo LocCode Acode Phoenix Analyte Criteria Units ST GBA51801 State Category Criteria Name BA51801 PEM $8260MER Dichlorodifluoromethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Chloromethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Vinyl chloride ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Bromomethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Chloroethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Trichlorofluoromethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,1-Dichloroethene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Trichlorotrifluoroethane ug/kg MA Cam Protocol VOA SOIL RL 920 370 10 ug/kg BA51801 PEM $8260MER Acetone ug/kg MA Cam Protocol VOA SOIL RL ND 7300 10 ug/kg BA51801 PEM $8260MER Carbon Disulfide ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Methylene chloride ug/kg MA Cam Protocol VOA SOIL RL ND 730 10 ug/kg BA51801 PEM $8260MER trans-1,2-dichloroethene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,1-Dichloroethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Acrylonitrile ug/kg MA Cam Protocol VOA SOIL RL ND 730 10 ug/kg BA51801 PEM $8260MER cis-1,2-dichloroethene ug/kg MA Cam Protocol VOA SOIL RL 1200 370 10 ug/kg BA51801 PEM $8260MER 2,2-Dichloropropane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Tetrahydrofuran (THF) ug/kg MA Cam Protocol VOA SOIL RL ND 730 10 ug/kg BA51801 PEM $8260MER Methyl Ethyl Ketone ug/kg MA Cam Protocol VOA SOIL RL ND 4400 10 ug/kg BA51801 PEM $8260MER Bromochloromethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Chloroform ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,1,1-Trichloroethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Methyl t-butyl ether (MTBE) ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,1-Dichloropropene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Carbon tetrachloride ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Benzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,2-Dichloroethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Trichloroethene ug/kg MA Cam Protocol VOA SOIL RL 1900 370 10 ug/kg BA51801 PEM $8260MER 1,2-Dichloropropane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Dibromomethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Bromodichloromethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER cis-1,3-dichloropropene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 4-Methyl-2-pentanone ug/kg MA Cam Protocol VOA SOIL RL ND 1800 10 ug/kg BA51801 PEM $8260MER Toluene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER trans-1,3-dichloropropene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,1,2-Trichloroethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Dibromoethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Tetrachloroethene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,3-Dichloropropane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 2-Hexanone ug/kg MA Cam Protocol VOA SOIL RL ND 1800 10 ug/kg BA51801 PEM $8260MER Dibromochloromethane ug/kg MA Cam Protocol VOA SOIL RL Result RL Factored Criteria Factored RL Criteria Analysis Units

Wednesday, August 31, 2011 Page 2 of 2 Sample Criteria Exceedences Report Requested Criteria: CAM SampNo LocCode Acode Phoenix Analyte Criteria Units ST GBA51801 State Category Criteria Name BA51801 PEM $8260MER Chlorobenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,1,1,2-Tetrachloroethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Ethylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER m&p-xylene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER o-xylene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Styrene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Bromoform ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Isopropylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,1,2,2-Tetrachloroethane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Bromobenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,2,3-Trichloropropane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER n-propylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 2-Chlorotoluene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,3,5-Trimethylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER trans-1,4-dichloro-2-butene ug/kg MA Cam Protocol VOA SOIL RL ND 730 10 ug/kg BA51801 PEM $8260MER 4-Chlorotoluene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER tert-butylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,2,4-Trimethylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER sec-butylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,3-Dichlorobenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER p-isopropyltoluene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,4-Dichlorobenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 2-Isopropyltoluene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER n-butylbenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,2-Dichlorobenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,2-Dibromo-3-chloropropane ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,2,4-Trichlorobenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Hexachlorobutadiene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Naphthalene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER 1,2,3-Trichlorobenzene ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8260MER Total Xylenes ug/kg MA Cam Protocol VOA SOIL RL BA51801 PEM $8270-SMR Benzoic acid ug/kg MA Cam Protocol SVOA SOIL RL ND 1400 670 ug/kg BA51801 PEM $8270-SMR 2,4-Dinitrophenol ug/kg MA Cam Protocol SVOA SOIL RL ND 750 670 ug/kg BA51801 PEM $8270-SMR Carbazole ug/kg MA Cam Protocol SVOA SOIL RL 1400 710 670 ug/kg Result RL Factored Criteria Factored RL Criteria Analysis Units Phoenix Laboratories does not assume responsibility for the data contained in this report. It is provided as an additional tool to identify requested criteria exceedences. All efforts are made to ensure the accuracy of the data (obtained from appropriate agencies). A lack of exceedence information does not necessarily suggest conformance to the criteria. It is ultimately the site professional's responsibility to determine appropriate compliance.

MassDEP Analytical Protocol Certification Form Laboratory Name: Phoenix Environmental Laboratories, Inc. Project #: Project Location: AECOM RTN: This Form provides certifications for the following data set: [list Laboratory Sample ID Number(s)] BA51801 Matrices: 8260 VOC CAM II A Groundwater/Surface Water Soil/Sediment Drinking Water Air Other: CAM Protocol (check all that apply below) 7470/7471 Hg CAM III B MassDEP VPH CAM IV A 8081 Pesticides CAM V B 7196 Hex Cr CAM VI B MassDEP APH CAM IX A 8270 SVOC CAM II B 7010 Metals CAM III C MassDEP EPH CAM IV B 8151 Herbicides CAM V C 8330 Explosives CAM VIII A TO-15 VOC CAM IX B 6010 Metals CAM III A A B C D E F G H I 6020 Metals CAM III D 8082 PCB CAM V A 9014 Total Cyanide/PAC CAM V1 A 6860 Perchlorate CAM VIII B Affirmative responses to questions A through F are required for "Presumptive Certainty" status Were all samples received in a condition consistent with those described on the Chainof-Custody, properly preserved (including temperature*) in the field or laboratory, and prepared/analyzed with method holding times? (* see narrative) Were the analytical method(s) and all associated QC requirements specified in the selected CAM protocol(s) followed? Were all required corrective actions and analytical response actions specified in the selected CAM protocol(s) implemented for all identified performance standard nonconformances? Does the laboratory report comply with all the reporting requirements speified in CAM VII A, "Quality Assurance and Quality Control Guidelines for the Acquisition and Reporting of Analytical Data"? a. VPH, EPH, and APH Methods only: Was each method conducted without significant modification(s)? (refer to the individual method(s) for a list of significant modifications). b. APH and TO-15 methods only: Was the complete analyte list reported for each method? Were all applicable CAM protocol QC and performance standard non-conformances identified and evaluated in a laboratory narrative (including all "No" responses to Questions A through E)? Responses to questions G, H and I below is required for "Presumptive Certainty" status Were the reporting limits at or below all CAM reporting limits specified in the selected CAM protocol(s)? Data User Note: Data that achieve "Presumptive Certainty" status may not necessarily meet the data usability and representativeness requirements described in 310 CMR 40. 1056(2)(k) and WSC-07-350 Were all QC performance standards specified in the CAM protocol(s) achieved? See Sections: SVOA, VOA Narrations. Were results reported for the complete analyte list specified in the selected CAM protocol(s)? All negative responses must be addressed in an attached laboratory narrative. I, the undersigned, attest under the pains and penalties of perjury that, based upon my personal inquiry of those responsible for obtaining the information, the material contained in this analytical report is, to the best of my knowledge and belief, accurate and complete. Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No No Authorized Signature: Date: Printed Name: Position: Wednesday, August 31, 2011 Kathleen Cressia QA/QC Officer

MCP Certification Report August 31, 2011 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 SDG I.D.: GBA51801 Phoenix reporting levels may exceed those referenced in the CAM protocol. Please refer to criteria sheet for comparisons to requested MCP standards. The client requested a shorter list of elements than the 6010 MCP list. 8260 Volatile Organics: The following compounds from the MCP 8260 analyte list were not performed: TAME, diethyl ether, diisopropyl ether, 1,4 dioxane, and ETBE. Only high level voa vials were received, not all MCP reporting criteria could be achieved. Soil Hex Chromium Narration Were all QA/QC performance criteria specified in the MADEP document CAM achieved? Yes. Instrument: Spect 07/20/11-1 (BA51801) The initial calibration met criteria, the calibration "r" > 0.995 Three LCS solutions were evaluated and reported: The hexavalent Chromium LCS does not require digestion and is used as a continuing calibration standard. The insoluble and soluble spikes ( LCS) monitor the performance of the extraction. The insoluble and soluble matrix spikes monitor the effect of matrix on the recoveries of hexavalent chromium. Some matrix spike recoveries may be outside of the acceptance criteria of 75-125, however the corresponding LCSs are within control. No further action is required, but a sample matrix bias is suspected. Printed Name Cynde Langille Position: Chemist Date: 7/20/2011 QC (Batch Specific) ----------- Sample No: BA54304 ----------- All LCS recoveries were within 70-130 with the following exceptions: None. I attest under the pains and penalties of perjury that, based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the best of my knowledge and belief, accurate and complete. Mercury Narration Were all QA/QC performance criteria specified in the MADEP document CAM achieved? Yes. Instrument: Merlin 07/13/11-1 (BA51801) The method preparation blank contains all of the acids and reagents as the samples; the instrument blanks do not. The initial calibration met all criteria including a standard run at or below the reporting level. All calibration verification standards (ICV, CCV) met criteria. All calibration blank verification standards (ICB, CCB) met criteria. Page 1 of 5

MCP Certification Report August 31, 2011 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 SDG I.D.: GBA51801 The matrix spike sample is used to identify spectral interfernce for each batch of samples, if within 85-115, no interference is observed and no further action is taken. Printed Name Rick Schweitzer Position: Chemist Date: 7/13/2011 QC (Batch Specific) ----------- Sample No: BA51359 ----------- All LCS recoveries were within 75-125 with the following exceptions: None. All LCSD recoveries were within 75-125 with the following exceptions: None. All LCS/LCSD s were less than 20 with the following exceptions: None. I attest under the pains and penalties of perjury that, based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the best of my knowledge and belief, accurate and complete. ICP Narration Were all QA/QC performance criteria specified in the MADEP document CAM achieved? Yes. Instrument: Icp7 07/13/11-1 (BA51801) The initial calibration met criteria. The continuing calibration standards met criteria for all the elements reported. The linear range is defined daily by the calibration range. The continuing calibration blanks were less than the reporting level for the elements reported. The ICSA and ICSAB were analyzed at the beginning and end of the run and were within criteria. Printed Name Laura Kinnin Position: Chemist Date: 7/13/2011 Instrument: Icp7 07/14/11-1 (BA51801) The initial calibration met criteria. The continuing calibration standards met criteria for all the elements reported. The linear range is defined daily by the calibration range. The continuing calibration blanks were less than the reporting level for the elements reported. The ICSA and ICSAB were analyzed at the beginning and end of the run and were within criteria. Printed Name Laura Kinnin Position: Chemist Date: 7/14/2011 Instrument: Icp7 07/18/11-1 (BA51801) The initial calibration met criteria. The continuing calibration standards met criteria for all the elements reported. The linear range is defined daily by the calibration range. Page 2 of 5

MCP Certification Report August 31, 2011 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 SDG I.D.: GBA51801 The continuing calibration blanks were less than the reporting level for the elements reported. The ICSA and ICSAB were analyzed at the beginning and end of the run and were within criteria. Printed Name Laura Kinnin Position: Chemist Date: 7/18/2011 Instrument: Icp7 07/19/11-1 (BA51801) The initial calibration met criteria. The continuing calibration standards met criteria for all the elements reported. The linear range is defined daily by the calibration range. The continuing calibration blanks were less than the reporting level for the elements reported. The ICSA and ICSAB were analyzed at the beginning and end of the run and were within criteria. Printed Name Laura Kinnin Position: Chemist Date: 7/19/2011 QC (Batch Specific) ----------- Sample No: BA51786 ----------- All LCS recoveries were within 75-125 with the following exceptions: None. All LCSD recoveries were within 75-125 with the following exceptions: None. All LCS/LCSD s were less than 30 with the following exceptions: None. ----------- Sample No: BA53888 ----------- All LCS recoveries were within 75-125 with the following exceptions: None. All LCSD recoveries were within 75-125 with the following exceptions: None. All LCS/LCSD s were less than 30 with the following exceptions: None. I attest under the pains and penalties of perjury that, based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the best of my knowledge and belief, accurate and complete. PCB Narration Were all QA/QC performance criteria specified in the MADEP document CAM achieved? Yes. Instrument: 8082 Narration: Au-ecd1 07/14/11-1 (BA51801) The initial calibration RSD for the compound list was less than 15 except for the following compounds: none The continuing calibration standards were within acceptance criteria except for the following compounds: none Page 3 of 5

MCP Certification Report August 31, 2011 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 SDG I.D.: GBA51801 Printed Name Michael Hahn Position: Chemist Date: 7/14/2011 QC (Batch Specific) ----------- Sample No: BA51783 ----------- All LCS recoveries were within 40-140 with the following exceptions: None. All LCSD recoveries were within 40-140 with the following exceptions: None. All LCS/LCSD s were less than 20 with the following exceptions: None. I attest under the pains and penalties of perjury that, based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the best of my knowledge and belief, accurate and complete. SVOA Narration Were all QA/QC performance criteria specified in the MADEP document CAM achieved? No. The LCS/LCSD recovery for 2,4-Dinitrophenol is below the lower range, but within the method criteria. A slight low bias for this compound is possible. The LCS/LCSD recovery for several other compounds is above the upper range. These compounds were not reported in the sample. No significant bias is suspected. Instrument: Chem06 07/13/11-1 (BA51801) The DDT breakdown and pentachlorophenol & benzidine peak tailing were not evaluated in the DFTPP tune. Initial Calibration (Chem06/SV_0713) Greater than 90 of the target compounds met calibration criteria with a RSD <20 or >0.99 correlation coefficient. The following compounds had RSDs >20 and <0.99 correlation coefficient: Atrazine, Hexachlorocyclopentadiene, 3-nitroaniline, 2,4-dinitrophenol, Carbazole The following compounds failed to meet the minimum required response factor: 2-nitrophenol, Pentachlorophenol Continuing Calibration: Greater than 80 of target compounds met continuing calibration criteria with a D <20. The following compounds had >20 difference from the initial calibration: 3-Nitroaniline, Atrazine Printed Name Damien Drobinski Position: Chemist Date: 7/13/2011 Page 4 of 5

MCP Certification Report August 31, 2011 Environmental Laboratories, Inc. 587 East Middle Turnpike, P.O.Box 370, Manchester, CT 06045 Tel. (860) 645-1102 Fax (860) 645-0823 SDG I.D.: GBA51801 QC (Batch Specific) ----------- Sample No: BA51783 ----------- All LCS recoveries were within 30-130 with the following exceptions: 2,4-Dinitrophenol(17), 2-Nitroaniline(>150), 3-Nitroaniline(>150), Carbazole(134) All LCSD recoveries were within 30-130 with the following exceptions: 2,4-Dinitrophenol(12), 2-Nitroaniline(>150), 3-Nitroaniline(>150), Carbazole(148) All LCS/LCSD s were less than 30 with the following exceptions: 2,4-Dinitrophenol(34.5), Benzidine(31.7) I attest under the pains and penalties of perjury that, based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the best of my knowledge and belief, accurate and complete. VOA Narration Were all QA/QC performance criteria specified in the MADEP document CAM achieved? No. Acetone had LCS recovery slightly below 70 but above 40. The LCSD was within acceptance limits. Instrument: Chem11 07/12/11-2 (BA51801) Initial Calibration Verification (CHEM11/RCPS_0711): >90 of target compounds met criteria. The following compounds had RSDs >20: Acrolein, Acetone Continuing Calibration Verification: >80 of target compounds met criteria. Internal standards were within the 50-200 deviation from the initial calibration. The following compounds had Deviations >30: Acrolein, Acetone Printed Name Johanna Harrington Position: Chemist Date: 7/12/2011 QC (Batch Specific) ----------- Sample No: BA51359 ----------- All LCS recoveries were within 70-130 with the following exceptions: Acetone(69) All LCSD recoveries were within 70-130 with the following exceptions: None. All LCS/LCSD s were less than 30 with the following exceptions: None. I attest under the pains and penalties of perjury that, based upon my inquiry of those individuals immediately responsible for obtaining the information, the material contained in this report is, to the best of my knowledge and belief, accurate and complete. Page 5 of 5