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PHASE II COMPREHENSIVE SITE ASSESSMENT REPORT

Former Boston Junk/Boston Iron and Metal Company 14 Louis Street Boston, Massachusetts

RTN: 3-0580 (RAM Env. Ref. No. 106.24)

July 12, 1999

Prepared for: Prepared by:

Boston Edison Company RAM Environmental, LLC 800 Boylston Street One Roberts Road Boston, Massachusetts Plymouth, Massachusetts 02360. AMENVIRONMENTAL ENVIRONMENTAL REMEDIATION ASSESSMENT * MANAGEMENT

PHASE II COMPREHENSIVE SITE ASSESSMENT REPORT

Former Boston Junk/Boston Iron and Metal Company 14 Louis Street Boston, Massachusetts

RTN: 3-0580 (RAM Env. Ref. No. 106.24)

July 12, 1999

Prepared for: Prepared by:

Boston Edison Company RAM Environmental, LLC 800 Boylston Street One Roberts Road Boston, Massachusetts Plymouth, Massachusetts 02360 RAM ENVIRONMENTAL EMEDIATION * ASSESSMENT * MANAGEMENT 1.0 INTRODUCTION

On behalf of Boston Edison Company ("BECo"), RAM Environmental, LLC ("RAM Environmental") has prepared this Phase II Comprehensive Site Assessment ("Phase II") report in connection with the former Boston Junk/Boston Iron and Metal Company ("Boston Junk") site located at 14 Louis Street in Boston, Massachusetts (the "Site"). The location of the Site is indicated in Figure 1-1, Site Locus Map, Appendix A. The disposal site encompasses the following properties as indicated in Figure 1-2, Appendix A:

* SAK Recycling Corporation ("SAK");

* Energy International ("EI");

* Massport/Cypher Street; and

* Casey and Hayes (C&H).

This report has been prepared as a result of a release ofoil and/or hazardous material ("OHM") from the former Boston Junk and railroad operation at the disposal site. The disposal site is classified as Tier IA and has been assigned DEP Release Tracking Number * ("RTN") 3-0580. This Phase II Report has been prepared pursuant to 310 CMR 40.0835 and does not include a Risk Characterization, that will be submitted to the Department of Environmental Protection ("DEP") in the future.

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 1-1 .RAM ENVIRONMENTAL REMEDIATION ASSESSMENT * MANAGEMENT 8.0 RISK CHARACTERIZATION

A site specific risk characterization will be prepared and submitted to DEP in the future. Continued use of the disposal site for commercial purposes will be assessed as part of the risk characterization. We anticipate that the installation of an asphalt cap with the application of an Activity and Use Limitation ("AUL") will result in a achieving a level of "no significant risk."

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 8-1 RAM ENVIRONMENTAL EMEDIATION * ASSESSMENT * MANAGEMENT 9.0 CONCLUSIONS

RAM Environmental's findings are set forth below.

a.) A release of OHM to the environment has occurred as a result of the former Boston Junk and railroad operations.

b.) The disposal site encompasses the SAK, El, Massport/Cypher Street; and C&H properties.

c.) SAK currently owns the property at 14 Louis Street. El owns the northern portion of the disposal site as indicated in Figure 1-2, Appendix A. SAK bought the property from Louis Freeman in August 1992. Mr. Freeman operated Boston Junk from 1947 to 1985. SAK utilized the property from August 1992 to 1996 when DEP ordered a cessation of all Site activities and the Attorney General's office obtained an injunction to prevent property use. The SAK property at 14 Louis Street is currently inactive and contains several piles of junk, soil, and scattered debris.

d.) Based upon Sanborn Maps dating to 1922, prior to 1947 as well as throughout the 1970/80s the disposal site was utilized as a railroad yard. A moveable electric hoisting crane was located within these former railroad track locations. The crane was a 35 ton 0 gantry crane that likely was utilized for railroad engine and car maintenance in this area.

e.) The source(s) of PCBs at the disposal site include Boston Junk's historical operations over 40 years of operation and the extensive historical railroad yard operations. There is evidence that the Boston Junk facility had equipment that may have contained PCB impacted oils such as motors, generators, transformers and capacitors. Other PCB impacted equipment historically appears to have been salvaged at this location including automobiles, as evidenced by the shredded materials at the Site.

f.) The potential source of the elevated levels of lead would be consistent with, batteries, spent motor or lubricating oil or potentially fill that is ubiquitous to the area.

g.) One (1) of the PCB arochlors detected in the former railroad track area is consistent with the type of petroleum impacted PCB arochlor used in the railroad industry that is not found in transformer oil..

h.) The railroad appears to have been a significant source of PCB impacted petroleum at the disposal site. The most elevated levels and deepest location of PCB impacted soil is located at the end of the former railroad track locations as well as within the hoisting crane area as set forth in Section 4.5.

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 9-1 RAM ENVIRONMENTAL EMEDIATION * ASSESSMENT * MANAGEMENT i) Over 400 samples soil and groundwater samples have undergone laboratory analyses (does not include the samples set forth in Section 3.3) as summarized in Table C-1, Appendix C.

j) PCBs, lead, EPH and TPH are the compounds of concern in soil at the disposal site.

k.) The compounds detected in groundwater are set forth in Table C-3, Appendix C. The only PCB detected in groundwater was Arochlor 1260. This was detected only at one well location 221-W04. EPH and select VOCs were also detected at this location. None of these compounds were detected at any other location other than 274-W02 where EPH was detected. Arsenic, barium cadmium, chromium, mercury, and lead were detected in select groundwater samples collected as set forth in Table C-3, Appendix C.

1.) The estimated extent of PCB impacted soil is indicated on Figure 2-1, Appendix A. In general, PCB impacted soil was detected 0 to 3.0 feet below grade at the locations indicated in the PCB Cross Section A-A' and B-B', Figures 4-1 and 4-2, Appendix A. The estimated vertical extent of PCB impacted soil less than 2 mg/kg is shown in Figure 4-2, Appendix A.

m.) There are seven locations that exceed Upper Concentration Limits ("UCLs") in soil, plus three above ground soil piles indicated in Figure 2-1, Appendix A. Elevated concentrations of PCBs exceeding 100 mg/kg are shown in Figure 2-1 and 4-2. PCBs exceed 100 mg/kg at approximately 3 to 5 feet below grade in Areas A and B. In Areas SS-28, SS-64 and SS-92, PCBs exceed 100 mg/kg to approximately 1 to 3 feet below grade. In Areas 221-B08 and 221-B04, PCBs exceed 100 mg/kg approximately 5 to 10 feet below grade respectively. Areas A and B and the above ground soil piles exceed TCLP thresholds for lead.

n.) Area 221-B04 is the only location that had PCB impacted soil exceeding UCLs to 10 feet below grade and is the only location that exceeded Method 1 Groundwater Cleanup Standards for PCBs and EPH. No other groundwater samples collected at the disposal site exceeded Method 1 GW-2/GW-3 Groundwater Cleanup Standards. Low level VOCs (solvents) were detected in groundwater at this location that may be dissolving these compounds into groundwater in this area. No PCBs or solvent related VOCs were detected in groundwater at any other locations at the disposal site. Migration of these compounds in groundwater appears to be limited to this area.

o.) Four (4) geological units were identified at the disposal site. The upper most unit (Unit A) consists of four (4) to 16 feet of fill. The majority of the fill is sand and gravel containing coal, brick, ash, concrete, bone, glass and wood fragments. In some locations this fill consists primarily of sand and in three (3) locations the soil borings describe a silty fill in the lower portions of the fill unit. Unit B underlies the fill and

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 9-2 RAM ENVIRONMENTAL EMEDIATION * ASSESSMENT * MANAGEMENT consists of sand or silty sand. This unit is discontinuous with a maximum thickness of eight (8) feet. Unit C consists of silt, clay and fine sand, and the upper contact was encountered at four (4) to 16 feet below grade. None of these soil borings encountered bedrock.

p.) The upper contact of Unit C slopes from a high on the northeast side of the Site to a low in the vicinity of C Street and Louis Street. The upper surface of Unit C also appears to be higher on the south side of this building and, therefore, forms a trough below the building. Geological cross section B-B', Figure 5-1, Appendix A, shows the presence of this trough beneath the south end of the Louis and C Street building.

q.) The inferred groundwater flow direction beneath and northeast of the Louis and C Street building is southwest, and groundwater southwest of this building flows northeast, towards a groundwater trough as indicated in Figure 5-2, Appendix A. Groundwater appears to flow southeast through this trough as indicated in Figure 5-2, Appendix A. The groundwater trough is in the same location as the low area in the upper surface of Unit C. Therefore, groundwater flow near C Street and Louis Street appears to be influenced by the presence of this silt, clay and fine sand layer.

r.) The horizontal hydraulic gradient at the disposal site, (under an assumed steady state of conditions) is approximately 0.032 ft/ft on the northeast side of the groundwater Strough,and 0.047 ft/ft on the southwest side of the groundwater trough. RAM Environmental estimates groundwater velocity in Units A and B to be between 9.07 and 13.32 ft/day (3,311 and 4,862 ft/year) and between 9.07 x 10-6 and 1.33 x 10-5 ft/day (0.0033 and 0.0049 ft/year) in Unit C. Since the estimated groundwater velocity in Units A and B is six (6) orders of magnitude greater than the estimated velocity in Unit C, the contact between these units would be expected to influence groundwater flow direction, as observed at the disposal site.

s.) The compounds of concern are relatively immobile. The major exposure pathways for the compounds of concern is via direct contact or inhalation of particulates. The SAK property is no longer in use and a fence and locking gate surround the property. Fencing at the Cypher Street SAK parcel along West 1" Street was repaired or replaced as a public service by BECo. The El and C& H properties are paved.

The presence of the fencing and pavement prevent the potential for direct contact with soil. Therefore, based on the Risk Characterization conducted, HLA determined that an Imminent Hazard is not evident at the Site. In addition, HLA stated that a condition of substantial Release Migration is also not evident at the disposal site.

t.) A Risk Characterization will be conducted in the fiure.

S:\RAM\ 06.24\99REP\PH2RPT.WPDa Page 9-3 ARAM ENVIRONMENTAL .EMEDIATION* ASSESSMENT * MANAGEMENT u.) Further Comprehensive Response Actions are necessary to identify, evaluate, and select remedial action alternatives.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 9-4 RAM ENVIRONMENTAL .EMEDIATION* ASSESSMENT * MANAGEMENT 10.0 LIMITATIONS

1. RAM Environmental is not responsible for the accuracy of information provided to RAM Environmental by third-parties. Except as otherwise stated in this report, RAM Environmental has not attempted to verify the accuracy or completeness of any such information.

2. The data presented in this report and RAM Environmental's opinions based on such data is provided in accordance with RAM Environmental's proposal for professional services. The data reported and findings, observations and conclusions expresses in this report are limited by RAM Environmental's scope of work, including the extent of subsurface exploration and other tests.

3. This report is for the sole use of BECo. Any reuse or reliance on this report by any other third party shall be done only with the written consent of RAM Environmental.

4. The findings, observations, opinions conclusions and recommendations are not intended to and do not imply a warranty or a guarantee and are based solely upon site conditions at the time of RAM Environmental's investigation. The findings, observations, opinions conclusions and recommendations should not be 0considered an opinion concerning the compliance of any past or present owner or operator of the Site with any federal, state or local law or regulation. Nothing in this report constitutes a legal opinion or legal service and should not be relied upon as such.

Page 10-1 CS ONWEALTH OF IASSA SETT 'o

EXECUTIVE OFFICE OF ENVIRONMENTAL AFFAIRS DEPARTMENT OF ENVIRONMENTAL PROTECTION Metropolitan Boston - Northeast Regional Office

ARGEO PAUL CELLUCCI BOB DURAND Governor Secretary JANE SWIFT LAUREN A. LISS Lieutenant Governor Commrnissioner

July 21, 1999

Boston Edison Company SOUTH BOSTON 800 Boylston Street 14 Louis Street Boston, MA 02199 Site Number 3-0580 PHARE ITT REMEDTAT. ACTTON PlT.AN Attn: Howard Steiman Dear Mr. Steiman:

On July 13, 1999, the Department of Environmental Protection's Northeast Regional Office received a Phase III Remedial Action Plan submittal for the above mentioned site. In response, the Department has conducted an administrative completeness review of this submittal. At the conclusion of its review, the Department determined that this Phase III Remedial Action Plan submittal is administratively incomplete.

To address the administrative deficiency in this submittal, please provide the Department with the following information:

Comprehensive Response Action Transmittal BWSC Form 108:

This form is required with this Phase III Remedial Action Plan submittal.

For your convenience, a blank copy of the Comprehensive Response Action Transmittal Form is provided with this letter.

The Department will not consider itself in receipt of this submittal until the required corrections are made. The receipt date of this submittal will be the date that the Department is in receipt of a complete and correct Phase III Remedial Action Plan submittal.

This information is available in alternate formal by calling our ADA Coordinator at (617) 574-6872.

205A Lowell St. WUnington, MA 01887 * Phone (978) 661-7600 * Fax (978) 661-7615 * TTD# (978) 661-7679 SPrinted on Recycled Paper - So • e Boston Edison Company Phase II Comprehensive Site Assessment Page 2

Please be advised that failure to submit a complete and correct Phase III Remedial Action Plan submittal may cause the Potentially Responsible Party to miss required deadlines set forth in the MCP.

If you have any questions relative to this matter, I can be contacted at the letterhead address or by calling (978) 661-7795.

Sincerely,

Amy Brewer Bureau of Waste Site Cleanup

cc: RAM Environmental LLC One Roberts Road Plymouth, MA 02360 Attn: Michael Pierdinock

DEP File Boston Edison aA HEC ENERGY CIOMPANY 101 Linwood Street Somerville, MA 02143

August 9, 1999 -6

Commonwealth of Massachusetts TI Department of Environmental Protection - 205A Lowell Street Wilmington, MA 01887

Attention: Ms. Amy Brewer F

Subject: RTN 3-0580 14 Louis Street, Boston Form BWSC-108 for Phase H and Phase II Reports

Dear Ms. Brewer:

Thank you for contacting Boston Edison Company about the Form BWSC-108 for the Phase II and Phase III Reports for the subject site. To accommodate a request from Mr. Richard J. Chalpin to submit the reports as quickly as possible, we were not able to complete a formal risk assessment. Since this transmittal form includes a completion statement and the LSP of Record (Mr. Pierdinock) was unable to render an opinion that all work was complete, he could not provide the forms with the reports. Therefore, Mr. Pierdinock called Mr. Chalpin prior to preparing and submitting the reports to: * Explain why he was not able to provide Form BWSC-108's, and o Clarify that a formal risk assessment would not change any of the findings or opinions offered in the reports. As a result of their conversations, Mr. Chalpin allowed Boston Edison to submit the reports without the forms and without a formal risk assessment. Therefore, we respectfully request that you accept these reports without the usual transmittal forms. Please do not hesitate to contact either Mr. Pierdinock at (508) 747-7900 or me at (617) 369-5575 for any reason.

Thank you for your attention.

Very truly yours,

Howard E. Steiman Principal Environmental Engineer

cc: Michael J. Pierdinock, RAM Environmental, LLC COMMONWEALTH OF MASSACHUSETTS EXECUTIVE OFFICE OF ENVIRONMENTAL AFFAIRS DEPARTMENT OF ENVIRONMENTAL PROTECTION Metropolitan Boston - Northeast Regional Office

ARGEO PAUL CELLUCCI BOB DURAND Governor

JANE SWIFT LAUREN A. LISS Lieutenant Governor Commissioner

July 21, 1999

Boston Edison Company SOUTH BOSTON 800 Boylston Street 14 Louis Street_ Boston, MA 02199 Site Number .3-0580 PHASE TT COMPREHENSTVE SITE ASRS.SAMENT Attn: Howard Steiman

Dear Mr. Steiman:

On July 13, .1999, the Department of Environmental Protection's Northeast Regional Office received a Phase II Comprehensive Site Assessment submittal for the above mentioned site. In response, the Department.has conducted an administrative completeness review of this submittal. At the conclusion of its review, .the Department determined that this Phase II Comprehensive Site Assessment submittal is administratively incomplete.

To address the administrative deficiency in thissubmittal, please provide the Department with the following information:

Comprehensive Response Action Transmittal BWSC Form 108:

This form is required with this , Phase._II Comprehensive Site Assessment submittal.,

For your convenience, a blank copy of the. Comprehensive Response Action Transmittal Form is provided with this letter..

The Department will not consider itself in receipt . of this submittal until the required corrections are made. The receipt date of this submittal will be the date that the Department is in receipt of a complete and correct Phase II Comprehensive Site Assessment submittal.

This information is availablein alternate formal by callingour ADA Coordinator at(617) 574-6872.

S205A Lowell St. Wilmington, MA 01887 * Phone (978) 661-7600 * Fax (978) 661-7615 * TTD# (978) 661-7679 Q Printed on Recycled Paper Boston Edison Company Phase II Comprehensive Site Assessment Page 2

Please be advised that failure to submit a complete and correct Phase II Comprehensive Site Assessment submittal may cause the Potentially Responsible Party to miss required deadlines set forth in the MCP.

If you have any questions relative to this matter, I can be contacted at the letterhead address or by calling (978) 661-7795.

Sincerely,

Amy Brewer Bureau of Waste Site Cleanup cc: RAM Environmental, LLC One Roberts Road Plymouth, MA 02360 Attn: Michael Pierdinock

DEP File R~AM ENVIRONMENTAL A REMEDIATION *ASSESSMENT * MANAGEMENT

TABLE OF CONTENTS

1.0 INTRODUC ION ...... Page 1-1

2.0 DISPOSAL SITE NAME LOCATION. LOCI S MAP AND DTSPOSAL SITE M AP ...... :...... Page 2-1

3.0 DISPOSAL SITE HISTORY ...... Page 3-1 3.1 SANBORNMAPREVIEW ...... Page3-1 3.2 REGULATORY CORRESPONDENCE AND/OR REPORTS FROM 1982 1996 ...... Page 3-2

4.0 NATURE AND EXTENT OF OIL, AND HAZARDOIUS M ATERIAL("OHM") ...... Page 4-1 4.1 SOURCE(s) OF OHM AT THE SITE ...... Page 4-1 4.2 NATURE OF OHM AT THE SITE ...... Page 4-1 4.2.1 Phase I Initial Site Investigation. New England Environmental Technologies Inc...... Page 4-2 4.2.2 Immediate Response Action and Imminent Hazard Evaluation ...... Page 4-3 S4.2.3 Boston Redevelopment Authority ...... Page 4-4 4.3 PRESENCE OF NAPL ...... Page 4-5 4.4 HORIZONTAL AND VERTICAL EXTENT OF OHM ...... Page 4-5 4.5 SUM MARY ...... Page 4-7

5.0 HYDROGREOLOGY ...... Page 5-1 5.1 DESCRIPTION OF SUBSURFACE SOILS ...... Page 5-1 5.2 DESCRIPTION OF GROUNDWATER CHARACTERISTICS ....Page 5-1 5.3 SOIL BORING AND MONITORING WELL CONSTRUCTION LOGS ...... Page 5-2 5.4 EVALUATION OF THE POTENTIAL FOR FLOODING AT THE SITE ...... Page 5-2

6.0 ENVIRONMENTAL FATE AND TRANSPORT OF OHM ...... Page 6-1 6.1 FATE AND TRANSPORT ...... Page 6-1 6.1.1 Vapor Pressure ...... Page 6-2 6.1.2 Heiy-'s Law onstant...... Page 6-2 6.1.3 SoI bility...... Page 6-2 6.1.4 Organic Carbon Partition Coefficients ...... Page 6-3 6.1.5 Peristence ...... Page 6-3 RAM ENVIRONMENTAL 'EMEDIATION * ASSESSMENT * MANAGEMENT TABLE OF CONTENTS (Continued)

6.1.6 Binaccumulation Potential ...... Page 6-3 6.2 MIGRATORY PATHWAYS ...... Page 6-3

7.0 EXPOSURE ASSESSMENT ...... Page 7-1 7.1 ENVIRONMENTAL RECEPTORS ...... Page 7-1 7.2 HUMAN RECEPTORS...... Page 7-1

8.0 RISK CHARACTERIZATION...... P age 8-1

9.0 CONCTI JSIONS ...... P age 9-1

10.0 LIM ITATIONS ...... Page 10-1 R~AM ENVIRONMENTAL REMEDIATION ASSESSMENT * MANAGEMENT LIST OF TABLES

TABLE No. DESCRIPTION PAGE No.

Table 6-1 Physical and Chemical Properties of PCBs and Lead Page 6-1 RAM ENVIRONMENTrAL REMEDIATION * ASSESSMENT * MANAGEMENT APPENDICES

APPENDIX A FIGURES Figure 1-1 Site Locus Map Figure 1-2 Disposal Site Map Figure 2-1 Estimated Extent of OHM Figure 4-1 PCB Cross Section Locations Figure 4-2 PCB Cross Sections A-A' and B-B' Figure 5-1 Geologic Cross Section A-A' and B-B' Figure 5-2 Groundwater Contour Map

APPENDIX B SANBORN MAPS 1888, 1922, 1923, 1950, 1964 and 1988

APPENDIX C LABORATORY ANALYTICAL SUMMARY TABLES

C-1 HISTORICAL SAMPLES SUBMITTED FOR LABORATORY ANALYSIS C-2 COMPOUNDS DETECTED IN SUBSURFACE SOIL C-2 COMPOUND DETECTED IN GROUNDWATER

APPENDIX D SOIL BORING LOGS AND MONITORING WELL CONSTRUCTION LOGS

APPENDIX E GROUNDWATER ELEVATION RESULTS RAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT 1.0 INTRODUCTION

* SAK Recycling Corporation ("SAK");

* Energy International ("El");

* Massport/Cypher Street; and

* Casey and Hayes (C&H).

This report has been prepared as a result of a release of oil and/or hazardous material ("OHM") from the former Boston Junk and railroad operation at the disposal site. The disposal site is classified as Tier IA and has been assigned DEP Release Tracking Number ("RTN") 3-0580. This Phase II Report has been prepared pursuant to 310 CMR 40.0835 and does not include a Risk Characterization, that will be submitted to the Department of Environmental Protection ("DEP") in the future.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 1-1 RAM ENVIRONMENTAL SREMEDIATION *ASSESSMENT * MANAGEMENT 2.0 DISPOSAL SITE NAME, LOCATION, LOCUS MAP AND DISPOSAL SITE MAP

Pursuant to 310 CMR 40.0835(4)(a) and (b), the disposal site name, location, locus map and disposal site map are set forth below.

Former Boston Junk/Boston Iron and Metal Company 14 Louis Street Boston, Massachusetts

The geographic location of the disposal site and surrounding area is indicated on Figure 1-1, Site Locus Map (Appendix A). The five hundred (500) foot and one-half (0.5) mile radial boundaries surrounding the disposal site are also indicated on Figure 1-1 (United States Geological Survey Map - Boston South Quadrangle). The disposal site maps depicting the study area and locating sampling points relevant to the Phase II report are indicated in Figure 1-2, Appendix A.

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 2-1 RAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT 3.0 DISPOSAL SITE HISTORY

Pursuant to 310 CMR 40.0835(4)(c), the disposal site history is set forth below.

SAK currently owns the property at 14 Louis Street. SAK bought the property from Louis Freeman in August 1992. Mr. Freeman operated Boston Junk from 1947 to 1985. SAK utilized the property from August 1992 to 1996 when DEP ordered a cessation of all Site activities and the Attorney General's office obtained an injunction to prevent property use. The SAK property at 14 Louis Street is currently inactive and contains several piles of junk, soil, and scattered debris.

Based upon Sanborn Maps dating to 1922, prior to 1947 as well as throughout the 1970/80s the disposal site was utilized as a railroad yard at the locations indicated in Figure 2- 1. A moveable electric hoisting crane was located within these former railroad track locations as indicated in Figure 2-1, Appendix A. The crane was a 35 ton gantry crane that likely was utilized for railroad engine and car maintenance in this area.

3.1 SANBORN MAP REVIEW

The 1888, 1922, 1923, 1950, 1964, and 1988 Sanbomrn Maps are attached at Appendix 0 B and summarized below.

1888

The area northeast of Cypher Street was vacant at this time. Southwest of Cypher Street consisted of various commercial establishments and a Cooper Shop. North to northwest of the disposal site consisted of B Street, Boston Cooperage Company, railroad tracks and a kerosene oil company.

1922 & 1923

The NYNH&H Railroad Freight yard was located northeast of Anchor Street (renamed Louis Street). Brooklyn Cooperage Company operated in the building adjacent to C and Anchor Street. A moveable electric hoisting crane was located in the railroad yard directly adjacent to the building. Railroad lines end in this area as indicated in Appendix B.

According to the 1923 Sanborn Map, the following commercial establishments were located between West 1St Street and Cypher Street: Boston Ice Company, W.P Stone & Company that indicate the presence of electric truck storage, R Galvin Trucking, and the City Iron Foundry. Railroad tracks are located on Cypher and C Street. The Boston Transit Commission Stockyard (rod bending, cement storage, pipe shop, machine shop) was located

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 3-1 RAM ENVIRONMENTAL *REMEDIATION * ASSESSMENT * MANAGEMENT between Cypher and Anchor Street. Two railroad spurs end at his location as indicated in Appendix B.

1950

The 1950 Sanborn Map indicates that the railroad lines appear to be in the same locations detailed in the 1920 Sanborn Maps. The only changes evident at this time are associated with the commercial establishments in this area. The City of Boston Transit Company as well as Supreme Wines Company were located between Cypher and Anchor Streets. The following commercial establishments were located between West 1V Street and Cypher Street: private truck garage, motor freight station, and Somerville Barrel and Drum Corp.

1964

The 1964 Sanborn Map indicates that the railroad lines appear to be in the same locations detailed in the 1920 and 1950 Sanborn Maps. Anchor Street is now called Louis Street and an area identified as a Scrap Metal area is evident adjacent to Louis Street as indicated in Appendix B. The area between Cypher and Louis Street is identified as The Boston Iron & Metal Company Scrap Metal Yard and Supreme Wine Company. An area identified as "Junk" was located between West 1St Street and Cypher Street.

1988

The 1988 Sanborn Map indicates that there are no railroad tracks indicated northeast of Louis Street adjacent to the commercial building on C Street. Railroad tracks are indicated between and on Cypher Street, Louis Street, and C Street, that are consistent with historical locations. Other than the railroad track locations, the commercial establishments and descriptions appear consistent with the 1964 Sanborn Map (other than a change in commercial establishments at C and West 1V Street as indicated in Appendix B).

3.2 REGULATORY CORRESPONDENCE AND/OR REPORTS FROM 1982 - 1996

The reports and correspondence from 1982 to 1996 reviewed by RAM Environmental are described below.

1982

The United States Environmental Protection Agency ("USEPA") inspected the Site in November 1982 as a result of a complaint by an adjacent owner that debris had been placed on the adjacent site. Transformers and scrap metal were observed, and a sample collected on

S:\RAM\l06.24\99REP\PH2RPT.WPDa Page 3-2 RAM ENVIRONMENTAL REMEDIATION *ASSESSMENT * MANAGEMENT the outside of a transformer contained 110 ppm of Polychlorinated Biphenyl ("PCB") Arochlor 1242. A soil sample from an oil stained area east of the pile contained 16 ppm of a PCB mixture of Arochlors 1242, 1254, and 1260. 1983

A Massachusetts Department of Environmental Quality and Engineering ("DEQE," now DEP) memorandum reported a resident at 94B Street complaining of oil odors in their houses that resulted in a DEQE Investigation of the Junkyard.

1984

Goldberg-Zoino & Associates ("GZA") was contracted by Mr. Nick Contos in 1984 to conduct an environmental site assessment of his property also known as the "Conrail Property." GZA visited the Contos property several times in 1984 and 1985. In 1984, GZA noted a number of electrical transformers stored between West 1s' and Cypher Streets.

In 1984 the Boston Fire Department responded to six separate alarms at the junk yard and wrote to the DEQE to express concerns that the transformers and electrical equipment at the Site could contain PCBs. O 1985

On February 9, 1985 the DEQE issued a Release/Threat of Release of Oil/Hazardous Material to Frank Freeman of Boston Junk. DEP requested information concerning the origin and contents of the transformers and other electrical equipment and whether the equipment contained PCBs.

In March and April of 1985, GZA advanced soil borings and test pits and installed groundwater monitoring wells on the Contos property as set forth in GZA's report entitled "Environmental Site Assessment, Conrail Properties," November 1985. Twelve (12) test pits (TP-1 through TP-12) were excavated four and one-half (4.5) to 12 feet below grade. Groundwater ranged from three (3) to six (6) feet below grade. Approximately four (4) to seven (7) feet of fill was encountered which was underlain by organic silts and clays. An oily film was observed on groundwater in several of the test pits. Five (5) soil borings were advanced that were completed as groundwater monitoring wells (GZA-1 through GZA-5). Soil and groundwater samples were field screened for total volatile organic compounds ("VOCs") with a Century Systems Model 128 gas chromatograph. According to GZA's report, no significant levels of VOCs were evident in soil and groundwater.

Composite and grab soil samples were submitted for PCB analysis. The results are set forth below.

S:\RAM\I 06.24\99REP\PH2RPT.WPDa Page 3-3 RAM ENVIRONMENTAL EMEDIATION * ASSESSMENT * MANAGEMENT

o S-1, S-2, S-3, S-4, S-7 and S-8: PCB Arochlor 1254 = 62, 140, 12, 94, 110 and 240 mg/kg respectively.

o C-I1, C-2, and C-3: Arochlor 1260 = 0.4, 10.7 and 10.7 mg/kg respectively.

On July 3, 1985, while on the Conto's property, GZA observed that the scrap piles between West 1st and Cypher Streets had been removed and that the transformers had been moved to new locations east of the original location.

On July 12, 1985, GZA observed transformers being disassembled with a blow torch approximately 200 feet northeast of the end of Cypher Street. As the transformer caught fire, the fire was extinguished with water from a water truck. GZA observed the runoff flowing onto the Conto's property. Soil samples from the Conto's property taken by GZA on this date had levels of PCBs up to 240 ppm in soil.

On August 16 and 20, 1985 the EPA conducted a site inspection. The EPA met with Mr. Frank Freeman of Boston Iron and Metal Company. Mr. Freeman informed the EPA that all the capacitors and transformers were drained prior to receiving them. EPA's site inspection revealed some transformers had been cut open and most of the cores were removed. Undamaged General Electric large Puranol capacitors were observed in the piles of scrap metal. None of the capacitors or transformers had PCB ML labels. EPA collected environmental samples for PCB analysis the results are set forth below.

o Leaking Capacitor: PCB Arochlor 1254 at 96% (960,000 ppm) and Arochlor 1242 at 105% (1,050,000 ppm);

o Voltage Regulator: PCB Arochlor 1260 at 144 ppm; and

o Oil Stained Samples contained Arochlor 1242 at 13 % (130,000 ppm) and Arochlor 1260 at 0.29% (2,900 ppm).

19811

On behalf of the USEPA, NUS Corporation Superfund Division ("NUS"), completed a report entitled "Preliminary Assessment: Boston Junk Property," dated March 17, 1986. According to the report, Boston Junk or Boston Iron and Metal Company accepted wire, cable, iron, boilers, motors, generators, transformers and capacitors.

On February 20, 1986, a perimeter survey of the Boston Junk Property was conducted by NUS. A number of 30 foot piles of scrap metal and debris were evident at this location. There was an oily odor in the air. The soil was stained black in a vacant area between West l' t Street, the railroad tracks, and the large fenced in piles on Louis Street. There were two (2)

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five foot piles of debris between West 1"tand Cypher Streets that consisted of wood, tires, wire, and metal scrap. More piles ofjunk, about 20 feet high were visible just outside the fenced area.

1981

In January of 1987 Inland Pollution Control on behalf of BECo removed, transported and properly disposed of various PCB equipment from the Site.

The DEQE issued a Request for Information to BECo, February 11, 1987, requesting records associated with the disposal of transformers, capacitors, etc. at the Site.

The DEQE inspected the Site on September, 17, 1987, and found that the electrical equipment had been removed and records were supplied that documented the removal and disposal of transformers containing PCBs to the disposal facility at Model City, New York.

On November 14, 1987, DEQE inspected the Site and according to the property owner, all electrical equipment was removed from the junkyard in January of 1987 by Inland Pollution Control on behalf of BECo.

DEQE issued a Notice of Responsibility ("NOR") to BECo dated December 1, 1987. According to the NOR, Boston Junk Company routinely purchased scrap from BECo prior to 1960 through 1984. BECo's records document the sale of transformers to Boston Junk Company.

1988

In January of 1988, Frank Freeman employed AsafA. Qazilbash ("AAQ") to conduct an environmental site assessment of the property as indicated in Progress Report No. 1, Program for PCB Clean-Up, Boston Junk Company, dated January 11, 1988. AAQ collected three (3) soil samples (Nos. 1, 2 and 3) at the disposal site. These locations corresponded to EPA sample locations Nos. 9, 5 and 3, respectively. PCB Arochlor 1254 was the only congener detected in the AAQ samples ranging from 36 to 280 mg/kg. These congeners are not consistent with EPA's results that detected Arochlor 1242 and 1260. It should be noted that some of the EPA samples were collected directly from the transformers or regulators.

1992

SAK purchased the Boston Junk property in 1992. SAK conducted extensive site activities and utilized the property as a staging area. SAK informed a DEP Environmental Investigator that their operation included the transportation of fill piled onto the site. DEP

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 3-5 RAM ENVWIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT also observed many soil piles throughout the site. The size and location of the soil piles changed between DEP site inspections.

1994 & 1995

The DEP issued a Notice of Responsibility and Interim Deadline letter to SAK Recycling Corp. According to the NOR, on January 6, 1994 the DEP conducted a site inspection and collected five soil samples for PCB analysis. The exact locations of the samples are not described in the letter, but PCB congeners 1248, 1254 and 1260 ranged from 1.1 to 430 mg/kg. Two (2) of the samples were collected from the above ground soil piles that had PCBs detected as set forth below.

o Sample No. 1: Arochlor 1248 - 430 mg/kg and Arochlor 1260 at 260 mg/kg; and

o Sample No. 2: Arochlor 1248 - 430 mg/kg and Aroehlor 1260 at 290 mg/kg.

DEP conducted multiple inspections and collected samples for PCB analysis as set forth in the Affidavit of Mr. Stephen Spencer, DEP dated February 1, 1996. A screening machine was observed at the Site which is utilized to sift through the debris piles to recover ferrous metals that are sold. From 1995 to 1996 the location and the size of the soil piles changed as a result of the sifting process. These soil piles contained elevated levels of PCBs as set forth below.

o Composite Soil Samples of Soil Piles at the Site, January 6, 1994 (Samples A,B,C,D and E): PCB Arochlor 1248: ranged from 78 to 550 mg/kg respectively; PCB Arochlor 1260 ranged from non detected to 290 mg/kg.; and PCB Arochlor 1254 was detected at a concentration of 140 mg/kg at one location (D); and

o Composite Soil Samples of Soil Piles at the Site, August 31, 1995 (Samples A,B,C,D, E, and F): PCB Arochlor 1242: ranged from 9.6 to 260 mg/kg respectively; PCB Arochlor 1260 ranged from non detected to 300 mg/kg.; and PCB Arochlor 1254 ranged from 9.6 to 260 mg/kg.

It should be noted that Arochlor 1242 was not detected during the first round of sampling and that Arochlor 1248 was not detected during the second round of sampling.

1996

The Phase I Initial Site Investigation Report dated February 1996 prepared by SAK and Third Harbor Tunnel/Central Artery ("THT/CA") details the investigation and

S:\RAM\l 06.24\99REP\PH2RPT.WPDa Page 3-6 RAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT remediation conducted December 1990 and February 1993 by the Massachusetts Highway Department ("MHD") associated with the Haul Road Construction. The PCB impacted soil excavation location is indicated in Figure 1-2, Appendix A. It is reported that PCBs impacted soil was removed to levels below 2 mg/kg.

In 1996, the DEP ordered a cessation of all Site activities and the Attorney General'Ps office obtained an injunction to prevent property use by SAK.

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Pursuant to 310 CMR 40.0835(4)(f), the characterization of the source(s), nature, vertical and horizontal extent of OHM and the presence of non-aqueous liquids ("NAPL"), if any, is set forth below.

4.1 SOURCE(s) OF OHM AT THE SITE

The source(s) of PCBs at the disposal site include Boston Junk's historical operations over 40 years of operation and the extensive historical railroad yard operations. There is evidence that the Boston Junk facility had equipment that may have contained PCB impacted oils such as motors, generators, transformers and capacitors. Other PCB impacted equipment historically may have been salvaged at this location.

The railroad appears to have been a significant source of PCB impacted petroleum at the disposal site. The most elevated levels and deepest location of PCB impacted soil is located at the end of the former railroad track locations as well as within the hoisting crane area as set forth in Section 4.5. Moreover, one (1) of the PCB arochlors detected in this area is consistent with the type of petroleum impacted PCB arochlor used in the railroad industry a that is not found in transformer oil. Other PCB impacted equipment historically appears to have been salvaged at this location including automobiles, as evidenced by the shredded materials at the Site.

The potential source of the elevated levels of lead would be consistent with, batteries, spent motor or lubricating oil or potentially fill that is ubiquitous to the area.

Asphalt covers the majority of the disposal site. Many of the samples were collected directly beneath the asphalt. The asphalt may also be a source of PCBs and total petroleum hydrocarbons ("TPH") in soil at the disposal site. The ratio of extractable petroleum hydrocarbons ("EPH") detected in soil are not consistent with transformer oil.

4.2 NATURE OF OHM AT THE SITE

This section describes the nature of impacted media at the disposal site as described in the Phase I Initial Site Investigation Report and Tier Classification Submital, prepared by New England Environmental Technologies, Inc., dated February 22, 1996, and Immediate Response Action Completion Statement, prepared by Harding Lawson Associates dated, October 1998. In addition, the analytical results associated with the subsurface soil and groundwater samples collected at the disposal site by Weston and Sampson on behalf of Boston Redevelopment Authority is described below.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 4-1 RAM ENVERONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT Over 400 samples have undergone laboratory analyses (does not include the samples set forth in Section 3.3) as summarized in Table C-1, Appendix C. The results of the response actions conducted at the disposal site are set forth below.

4.2.1 Phase I Initial Site Investigation, New England Environmental Technologies, Inc.

On behalf of SAK, New England Environmental Technologies ("NEET") advanced three soil borings (B-1 through B-3) and installed three groundwater monitoring wells (MW- 1 through MW-3) at the locations indicated in Figure 1-2, Appendix A. Depth to groundwater ranged from 0.62 to 4.83 feet below grade. The Phase I report states that the inferred groundwater flow direction is south to south west.

Select soil samples were collected to a maximum depth of 13.5 feet below grade and submitted to an analytical laboratory for TPH (Method 418.1), 8 RCRA Metals and PCB (Method 8080) analyses. The results are summarized in Appendix C, Table C-2. PCB Arochlors 1248, 1254, and 1260 were detected ranging in concentration from non detected to 12 mg/kg. TPH ranged from 38 to 896 mg/kg. Arsenic exceeded RCS-2 levels at 54 mg/kg at B-1 (0-2 feet below grade). Lead exceeded Reportable Concentrations ("RC") levels for soil classified as S-2 at B-2 (0-2 feet below grade).

Groundwater samples were collected from MW-1 MW-2 and MW-3 and submitted to an analytical laboratory for TPH (Method 418.1), PCBs (Method 8080), dissolved 8 RCRA Metals, and VOCs (Method 8010/8020) analyses. The groundwater analytical results are summarized in Appendix C, Table C-3. No PCBs were detected in groundwater and TPH was only detected at MW-3 at a concentration of 4 mg/1. Xylene was the only VOC detected at MW-3 at a concentration of 2 ug/l. Select metals were detected none of which were above RCGW-2 levels.

Composite soil samples were collected from the locations set forth below.

o SS-1: Stockpile No. 1;

o SS-5: Northeast Tailing Pile;

o SS-6: North side of unscreened pile;

o SS-7: North wall/fence;

o SS-8: Parking Area;

o SS-9/SS-10: North and West Debris Pile; and

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o SS-3/4: East Debris Pile.

Each sample underwent PCB (Method 8080) analysis. Select PCB Arochlors 1248, 1254, and 1260 were detected ranging in Total PCB concentrations from 159 to 1,240 mg/kg as set forth in Appendix E, Table C-2.

NEET classified the disposal site as a Tier II Site and rendered an opinion that an Imminent Hazard and Substantial Release Migration was not evident at the disposal site. The DEP requested that an Immediate Response Action be conducted to assess if an Imminent Hazard or Substantial Release Migration exists at the disposal site. The DEP classified the disposal site as a Tier IA and assigned Release Tracking Number ("RTN") 3-0580 to the disposal site.

4.2.2 Immediate Response Action and Imminent Hazard Evaluation

On behalf of BECo, Harding Lawson Associates ("HLA") conducted an investigation of the disposal site as set forth in the IRA Completion Statement dated October 1998. The SAK property is no longer in use and a fence and locking gate surround the property. Fencing at the Cypher Street SAK parcel along West 1st Street was repaired or replaced as a public service by BECo. The El and C& H properties are paved.

Between 1997 and 1998 HLA as part of the IRA activities, collected soil samples (SS- 1 through SS-99) in an approximate 50 foot grid at the locations indicated in Figure 1-2, Appendix A. Sample collection ranged from 0-1 to 6-8 feet below grade. The initial round of sampling conducted included the collection of soil samples 0-1 foot below grade. Areas with elevated concentration of PCBs were further assessed during the second round of sampling. All of the samples underwent PCB (Method 8080) analysis. Select soil samples were also submitted for TPH Fingerprint (GC-FID), EPH and total 8 RCRA Metals analyses. The soil sampling analytical results are set forth in Table C-2, Appendix C.

Four (4) composite soil samples (SP-I through SP-4) were collected as part of the IRA activities from the existing above ground soil/junk piles and submitted for PCB (Method 8080), TPH Fingerprint (GC-FID), 8 RCRA Metals and EPH analyses. The results are set forth in Table C-2, Appendix C.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 4-3 RAM ENVERONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT Sediment samples (CB-1 through CB-3) were collected as part of the IRA activities from three (3) catch basins at the locations indicated in Figure 3-1, Appendix A. Based upon the PCB results (Table C-2) the soil/sediment/standing water within each catch basin (total of 7.5 tons) was removed and disposed of at a licensed facility as part of the IRA. The discharge lines from each catch basin could not be evacuated to determine their destination but they likely discharge to the combined sewer on C Street. Hay bales were placed around the catch basins to prevent silt from entering the catch basins in the future.

4.2.3 Boston Redevelopment Authority

On behalf of the Boston Redevelopment Authority ("BRA"), Weston and Sampson collected subsurface soil and groundwater samples at the disposal site. Based upon the extent of impacted soils detected as set forth above, it appears that the samples were collected to further assess the vertical and horizontal extent of PCB impacted soil at the disposal site. RAM Environmental has been provided the soil and groundwater laboratory analytical results for the samples indicated in Figure 1-2, Appendix A. Soil boring logs and monitoring well construction logs for the samples collected are set forth in Appendix D.

Subsurface soil samples were collected to a maximum depth of 21 feet below grade. All of the samples underwent PCB (Method 8080) analysis with select samples undergoing VOCs (Method 8260), polynuclear aromatic hydrocarbons ("PAHs," Method 8270), EPH, volatile petroleum hydrocarbons ("VPH"), 8 RCRA Metals, and Toxicity Characteristics Leachate Procedure ("TCLP") Metals analyses. The samples submitted for laboratory analyses are summarized in Table C-1, Appendix C, and the compounds detected in soil are set forth in Table C-2, Appendix C.

Groundwater samples were collected from thirteen locations and submitted for PCB (Method 8080), VOCs (Method 8260), PAHis (Method 8270), EPH, VPH, and dissolved 8 RCRA Metals analyses. The compounds detected in groundwater are set forth in Table C-3, Appendix C. The only PCB detected in groundwater was Arochlor 1260. This was detected only at one well location 221-W04. EPH and select VOCs were also detected at this location. None of these compounds were detected at any other location other than 274-W02 where EPH was detected. The acetone detected in three of the groundwater samples is suspect and may be a result of decontamination or laboratory procedures. Arsenic, barium cadmium, chromium, mercury, and lead were detected in select groundwater samples collected as set forth in Table C-3, Appendix C.

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NAPL has not been observed on groundwater at the disposal site. Soil samples exceeded UCLs for PCBs and TPH as set forth in Table C-2, Appendix C.

4.4 HORIZONTAL AND VERTICAL EXTENT OF OHM

The estimated extent of PCB impacted soil is indicated on Figure 2-1, Appendix A. In general, PCB impacted soil was detected 0 to 3.0 feet below grade at the locations indicated in the PCB Cross Section A-A' and B-B', Figures 4-1 and 4-2, Appendix A. The estimated vertical extent of PCB impacted soil less than 2 mg/kg is shown in Figure 4-2, Appendix A.

There are seven locations that exceed Upper Concentration Limits ("UCLs"), plus three above ground soil piles indicated in Figure 2-1, Appendix A. Elevated concentrations of PCBs exceeding 100 mg/kg are shown in Figure 2-1 and 4-2. PCBs exceed 100 mg/kg at approximately 3 to 5 feet below grade in Areas A and B. In Areas SS-28, SS-64 and SS-92, PCBs exceed 100 mg/kg to approximately 1 to 3 feet below grade. In Areas 221-B08 and 221-B04, PCBs exceed 100 mg/kg approximately 5 to 10 feet below grade respectively.

The areas that exceed UCLs for PCBs (>100 mg/kg) and the corresponding TPH, lead and PCB analytical results, are set forth below.

Excavated Soil Piles

The TPH fingerprints at the three (3) soil pile locations (totaling approximately 2,550 yds3) indicated in Figure 2-1, Appendix A, were consistent with mid-molecular weight

hydrocarbons C 16-C 36 that is not consistent with transformer oil. In addition, Arochlors 1260, 1242, 1254 and 1248 were detected in the soil piles. The soil in this area exceeded TCLP lead levels.

Area A

The estimated horizontal extent of soil exceeding PCB UCLs in Area A is shown on Figure 2-1, Appendix A. Soils that exceed UCLs in this area are located approximately 1 to 3 feet below grade. The TPH fingerprints from the soil samples collected from Area A are consistent with motor oil/lubricating oil, hydraulic fluid, PCBs and mid-molecular weight hydrocarbons C16-C36 that is not consistent with transformer oil as indicated in Figure 2-1, Appendix A. Arochlors 1260, 1242, 1254, and 1248 were detected in soil collected from this Area. The soil in this area exceeded TCLP lead levels.

S:\RAM\l 06.24\99REP\PH2RPT.WPDa Page 4-5 RAM ENVWRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT Area.B

The estimated horizontal extent of soil exceeding PCB UCLs in Area B is shown on Figure 2-1, Appendix A. Soils that exceed UCLs in this area are located approximately 4 to 5.5 feet below grade. The TPH fingerprints from the soil samples collected from Area B are consistent with coal tar, motor oil/lubricating oil, hydraulic fluid, PCBs and mid-molecular weight hydrocarbons C16-C36 that is not consistent with transformer oil as indicated in Figure 1-2, Appendix A. The TPH fingerprint for one sample (SS-18) was consistent with transformer oil. Arochlors 1260, 1242, 1254, and 1248 were detected in soil in this area. The soil in this area exceeded TCLP lead levels.

Area SS-28

The estimated horizontal extent of soil exceeding PCB UCLs in Area SS-28 is shown on Figure 2-1, Appendix A. Soils that exceed UCLs in this area are located approximately 1 to 1.5 feet below grade. The TPH fingerprints from the soil samples collected from Area SS- 28 are consistent with motor oil/lubrication oil, hydraulic fluid as indicated in Figure 2-1, Appendix A. Arochlors 1260, 1242 and 1254 were detected in soil at this location.

Area SS-64

The estimated horizontal extent of soil exceeding PCB UCLs in Area SS-64 is shown on Figure 2-1, Appendix A. Soils that exceed UCLs in this area are located approximately 3 feet below grade. The TPH fingerprints from the soil samples collected from Area SS-64 are consistent with PCBs from sources other than transformer oil, as indicated in Figure 1-2, Appendix A. Arochlors 1260 and 1242 were detected in soil in this area.

Area SS-92

The estimated horizontal extent of soil exceeding PCB UCLs in Area SS-92 is shown on Figure 2-1, Appendix A. Soils that exceed UCLs in this area are located approximately 1.5 feet below grade. The TPH fingerprints from the soil samples collected from Area SS-92 are consistent with transformer oil, 0 to 1 foot below grade as indicated in Figure 1-2, Appendix A. PCBs and mid-molecular weight hydrocarbons C1 6-C36 were detected 1 to 3 feet below grade, that is not consistent with transformer oil as indicated in Figure 2-1, Appendix A. Arochlors 1260, 1254 and 1242, were detected in soil at this location.

Area 221-B04

The estimated horizontal extent of soil exceeding PCB UCLs in Area 221-B04 is shown on Figure 2-1, Appendix A. Soils that exceed UCLs in this area are located approximately 10 feet below grade. This is the only location that exceeded Method 1

S:\RAM\l106.24\99REP\PH2RPT.WPDa Page 4-6 RAM ENVWRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT Groundwater Cleanup Standards for PCBs and EPH. Low level VOCs (solvents) were detected in groundwater at this location. PCBs are insoluble in water. The VOCs detected in groundwater may have resulted in the dissolution of PCBs into groundwater at this location. No PCBs or solvent related VOCs were detected in groundwater at any other locations at the disposal site.

Area 221-88

The estimated horizontal extent of soil exceeding PCB UCLs in Area 221-B08 is shown on Figure 2-1, Appendix A. Soils that exceed UCLs in this area are located approximately 5 feet below grade. No TPH fingerprint sampling was conducted in this area. Arochlor 1260 was the only Arochlor detected in this area.

4.5 SUMMARY

In summary, the compounds-of-concern detected at the disposal site that exceed Method 1 Soil Cleanup Standards consist primarily of PCBs, lead, TPH and EPH. The Method 1 Soil Cleanup Standard for PCBs is 2 mg/kg. The estimated extent of PCB impacted soil exceeding 2 mg/k is shown in Figure 2-1, Appendix A. Several locations exceeded UCLs for PCBs of 100 mg/kg at the locations indicated in Figure 2-1, Appendix A. The above ground soil piles and Areas A and B also exceeded TCLP regulatory limits for lead.

Area 221-B04 is the only location that had PCB impacted soil exceeding UCLs to 10 feet below grade and is the only location that exceeded Method 1 Groundwater Cleanup Standards for PCBs and EPH. No other groundwater samples collected at the disposal site exceeded Method 1 GW-2/GW-3 Groundwater Cleanup Standards. Low level VOCs (solvents) were detected in groundwater at this location that may be dissolving these compounds into groundwater in this area. No PCBs or solvent related VOCs were detected in groundwater at any other locations at the disposal site.

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Pursuant to 310 CMR 40.0835(4)(d), description of the disposal site hydrogeologic characteristics is set forth below.

5.1 DESCRIPTION OF SUBSURFACE SOILS

Weston and Sampson Engineers, Inc. oversaw the advancement of soil borings utilizing the hollow stem auger drilling methodology between August 25, 1998 and March 3, 1999. The locations of the soil borings are indicated in Figure 1-2, Appendix A. Split spoon soil samples were collected at two (2) to five (5) foot intervals with two (2) inch diameter, two (2) foot long, steel split spoon samples driven using a 140 pound hammer falling 30 inches. The soil boring logs are attached at Appendix D.

RAM Environmental utilized the soil boring logs set forth in Appendix D to assess the geology at the disposal site. RAM Environmental prepared geologic cross section A-A' and B-B' as indicated in Figures 5-1, Appendix A. Four (4) geological units were identified at the disposal site. The upper most unit (Unit A) consists of four (4) to 16 feet of fill. The majority of the fill is sand and gravel containing coal, brick, ash, concrete, bone, glass and wood fragments. In some locations this fill consists primarily of sand and in three (3) locations the soil borings describe a silty fill in the lower portions of the fill unit. Unit B underlies the fill and consists of sand or silty sand. This unit is discontinuous with a maximum thickness of eight (8) feet. Unit C consists of silt, clay and fine sand, and the upper contact was encountered at four (4) to 16 feet below grade. Only one (1) soil boring penetrated Unit C to Unit D. The soil boring labeled 274-B06 encountered fine to medium grained sand (Unit D) between 30 and 47 feet below grade. None of these soil borings encountered bedrock.

The upper contact of Unit C slopes from a high on the northeast side of the Site to a low in the vicinity of C Street and Louis Street. The upper surface of Unit C also appears to be higher on the south side of this building and, therefore, forms a trough below the building. Geological cross section B-B', Figure 5-1, Appendix A, shows the presence of this trough beneath the south end of the Louis and C Street building.

5.2 DESCRIPTION OF GROUNDWATER CHARACTERISTICS

Weston and Sampson Engineers, Inc. oversaw the installation of eleven (11) monitoring wells at the disposal site between August 25, 1998 and March 3, 1999. The depth to groundwater ranged from 3.98 (271-B01-W01) to 10.65 (272-B01-W01) feet below grade as set forth in Appendix E. Based on Weston and Sampson's groundwater elevation measurements, RAM Environmental has inferred that groundwater beneath and northeast of

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 5-1 RAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT the Louis and C Street building to flow to the southwest, and groundwater southwest of this building to flow northeast, towards a groundwater trough as indicated in Figure 5-2, Appendix A. Groundwater appears to flow southeast through this trough as indicated in Figure 5-2, Appendix A. The groundwater trough is in the same location as the low area in the upper surface of Unit C. Therefore, groundwater flow near C Street and Louis Street appears to be influenced by the presence of this silt, clay and fine sand layer.

The horizontal hydraulic gradient at the disposal site, (under an assumed steady state of conditions) is approximately 0.032 ft/ft on the northeast side of the groundwater trough, and 0.047 ft/ft on the southwest side of the groundwater trough. RAM Environmental assumed a representative hydraulic conductivity for the soils observed at the disposal site of 10-' cm/sec for Units A and B and 10-7 cm/sec for Unit C (283.4 and 2.83 x 10-4 ft/day respectively; Freeze & Cherry, 1979). Based on these hydraulic conductivities and the estimated hydraulic gradients, RAM Environmental estimates groundwater velocity in Units A and B to be between 9.07 and 13.32 ft/day (3,311 and 4,862 ft/year) and between 9.07 x 10-6 and 1.33 x 10-5 ft/day (0.0033 and 0.0049 ft/year) in Unit C. Since the estimated groundwater velocity in Units A and B is six (6) orders of magnitude greater than the estimated velocity in Unit C, the contact between these units would be expected to influence groundwater flow direction, as observed at the disposal site.

O 5.3 SOIL BORING AND MONITORING WELL CONSTRUCTION LOGS

Pursuant to 310 CMR 40.0835(4)(d)2., the soil boring and monitoring well completion logs, prepared by Weston and Sampson Engineers, Inc., are attached at Appendix D.

5.4 EVALUATION OF THE POTENTIAL FOR FLOODING AT THE SITE

According to the USGS Topographic Map (Boston South Quadrangle) the Site is at an elevation of approximately ten (10) feet above mean sea level, and is located approximately 700 feet southeast of Fort Point Channel, the closest surface water body. The potential for short term flooding resulting from unusually heavy rains within a short period of time is possible due to limited stormwater drainage controls at the Site.

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Pursuant to 310 CMR 40.0835(4)(e), the environmental fate and transport of the compounds detected at the disposal site, the identification and characterization of existing and potential migration pathways and the potential for groundwater to be a source of vapors is set forth below.

6.1 FATE AND TRANSPORT

Based upon the results of the investigations set forth above, the compounds-of-concern at the disposal site include PCBs, lead, EPH and TPH. These compounds react differently in the environment as a result of their varying physical and chemical properties. Table 6-1, summarizes the fate and transport characteristics of the four (4) PCBs (Aroclors 1242, 1248, 1254 and 1260), lead and EPH; including solubility, vapor pressure, Henry's Law Constant, organic carbon partition coefficient, and bioconcentration factor ("BCF") in fish.

Table 6-1 PHYSICAL AND CHEMICAL PROPERTIES OF COMPOUNDS OF CONCERN DETECTED AT THE DISPOSAL SITE

Henry's Law ) Vapor Pressure Solubility BCF OHM Constant Vapor Pressure Solubilty(1) Log K. (kg) 3 S(atm.m /mnol) (mm Hg) (mg/I) (L/kg) Arochlor 1242 5.6 x 104 4.06 x 104 0.24 3.71 1 x 105

Arochlor 1248 3.5 x 10-3 4.94 x 104 0.054 5.64 1 x 105

Arochlor 1254 2.7 x 10-3 7.7 x 10' 0.012 5.61 1 x 10

Arochlor 1260 7.1 x 10.3 4.05 x 10' 0.080 6.42 1 x 101

EPH C9-C, 1.7(3) 1.4 x 104(3) 0.01(3) 5.83 NA considered considered considered considered considered EPH C1 9- C36 immobileo3) immobile(3) immobile(3) imnmobile(3) immobile(3)

EPH C,-C2 2 7.38 x 104 (3) 3.2 x 10-s 5.8 3.70 NA Approx. O Lead NA Approx.0 (2) NA NA 49 0 (1.0 at 1,160 C ) NA - Data not avallab le Sources: 1 Suthan S. Suthersan, Remediation Engineering Design Concepts, (CRC Press, 1997). 2 Michael D. LaGrega, et al, Hazardous Waste Management, (McGraw-Hill, Inc. 1994). 3 Massachusetts Department of Environmental Protection, Characterizing Risk Posed by Disposal Sites: Implementation ofMADEP VPH/EPHApproach, (October 31,1997).

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The vapor pressure of a liquid is the pressure a vapor exerts on a liquid at equilibrium (i.e. when the air is saturated with the vapor at a given temperature and pressure) and is a measure of a compounds tendency to volatilize. Chemical compounds with vapor pressures greater than 0.5 to 1.0 mm Hg prefer to exist in the vapor phase at a standard temperature of 25 oC and pressure of I atmosphere. Based upon the vapor pressure of the PCB Arochlors and EPHs, neither readily volatilizes as indicated in Table 6-1.

Lead has a vapor pressure of approximately zero (0), at 25 oC and 1 atmosphere, and a vapor pressure of one (1) mm Hg at 1160 oC. Since lead requires such a high temperature to volatilize, volatilization is not a characteristic of concern.

6.1.2 Henry's Law Constant

The Henry's Law Constant describes the air-water partitioning of a gas dissolved in a liquid. Compounds with high Henry's Law Constants prefer to exist in the vapor phase rather than the dissolved phase. As set forth in Table 6-1, PCBs and EPH C1,-C 22 have low Henry's Law Constants that indicate that these compounds do not readily enter the vapor phase from solutions in water. EPH C9-C 8 has the highest Henry's Law Constant of the compounds of concern as set forth in Table 6-1.

No Henry's Law Constant is available for lead because it is not volatile and has a vapor pressure of zero (0) at normal atmospheric temperatures. Therefore, vaporization from an aqueous solution is not a characteristic of concern for lead.

6.1.3 Solubility

The solubility of a substance is the degree to which the substance (the solute) will dissolve into another substance (the solvent; i.e. water). As indicated in Table 6-1, PCBs generally have relatively low solubilities ranging from 0.012 to 0.24 mg/L. However, the presence of dissolved organic compounds in water likely enhance the concentrations of PCBs in solution (J.S. Waid, PCBs and The Environment). In particular trichlorobenzenes and tetrachlorobenzenes enhance the solubility of PCBs in water (D. Cortes, 1995, Trichlorobenzenes- Draft Memorandum), and 1,2,4-trichlorobenzene has been detected in groundwater at 221-B04, as have concentrations of PCBs.

The solubility of lead is low as indicated in Table 6-1. The solubility of lead depends on the nature of the lead compound, the oxidation/reduction conditions and the pH of the water.

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The EPH fractions are relatively insoluble with EPH C11-C22 having the highest solubility of the compounds of concern set forth in Table 6-1.

6.1.4 Organic Carbon Partition Coefficients

The organic carbon partition coefficient ("Ko,") provides a measure of how a compound will partition between soils containing organic material and groundwater. Compounds with low log Ko values (<10) tend to be hydrophilic (i.e. the compounds prefer to partition into water) and have low soil sorption characteristics. Compounds with high log Koc values (>10) tend to be hydrophobic (i.e. the compounds do not readily partition into water) and have elevated soil sorption characteristics. The PCBs and EPH detected at the disposal site have low log Ko values, and tend to be hydrophobic.

Since the solubility of lead depends on the nature of the lead compound, the oxidation/reduction conditions and the pH of the water, the log K. value would also depend on these conditions. Therefore, there is no tabulated organic carbon partition coefficient for lead.

O 6.1.5 Persistence

Compounds such as metals and PCBs are very persistent in the environment and do not degrade beyond their elemental form. As such, metals have a relatively high potential for bioaccumulation. The persistence of PCBs and lead in the environment is considered high due to the absence of significant naturally occurring degradation.

6.1.6 Bioaceumulation Potential

The BCF, as set forth in Table 6-1, is an indication of the potential for a compound to bioaccumulate in the environment. The higher the BCF, the more likely it is bioaccumulate. PCBs have a BCF of 100,000 L/kg and lead has a BCF of 49 L/kg. Therefore, PCBs are highly likely to bioaccumulate and lead has a lower potential to bioaccumulate.

6.2 MIGRATORY PATHWAYS

Evidence of known or potential OHM migration pathways via air, soil, groundwater, surface water or sediment at the Site is set forth below.

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 6-3 IRAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT Soil Migration

The vertical and horizontal extent of OHM impacted soil is indicated in Figures 2-1 and 4-2, Appendix A. Due to the physical and chemical properties of EPH, PCBs and lead set forth above, these compounds detected in soil are relatively immobile. Migration of OHM in soil is not a significant pathway.

Groundwater Migration

Air Migration

The compounds of concern may migrate on particulates in ambient air throughout the disposal site. The SAK property is no longer in use and a fence and locking gate surround the property. Fencing at the Cypher Street SAK parcel along West 1" Street was repaired or replaced as a public service by BECo. The El and C& H properties are paved.

The presence of the fencing and pavement prevent the potential for direct contact with soil. Therefore, based on the Risk Characterization they conducted, HLA determined that an Imminent Hazard is not evident at the Site. In addition, HLA stated that a condition of substantial Release Migration is also not evident at the disposal site.

Vapor Phase

The compounds of concern have a low vapor pressure, therefore, migration of these compounds in this phase- is unlikely.

Surface Water/Sediment

Surface water discharges to the catch basins that are reported to discharge to the combined sewer on C Street. Bales of straw/hay are presently being utilized to prevent the migration of silt or particulates into the catch basins.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 6-4 RAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT The disposal site is located approximately 700 feet southeast of Fort Point Channel, the closest surface water body. Surface water and sediment is not impacted by the disposal site.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 6-5 AM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT 7.0 EXPOSURE ASSESSMENT

Pursuant to 310 CMR 4 0.08 3 5 (4)(g), evidence of known or potential exposure of OHM by human and environmental receptors at the Site via inhalation, dermal exposure or ingestion is set forth below.

The SAK property is no longer in use and a fence and locking gate surround the property. Fencing at the Cypher Street SAK parcel along West 1st Street was repaired or replaced as a public service by BECo. The El and C& H properties are paved. The presence of the fencing and pavement prevent the potential for direct contact with soil. Any utility or construction worker that may conduct soil intrusive activities at the disposal must take the appropriate health and safety precautions prior to initiating field activities.

7.1 ENVIRONMENTAL RECEPTORS

No environmental receptors or natural resource areas are located within the horizontal and vertical limits of the disposal site.

O 7.2 HUMAN RECEPTORS

As set forth above the SAK property is presently abandoned. The El property is being utilized for commercial purposes but an asphalt cap is located on this property to prevent contact with OHM impacted soils. There are no potable water supply wells at the Site, and the disposal site is not located within an aquifer protection area.

S:\RAM\106.24\99REP\PIH2RPT.WPDa Page 7-1 RAM ENVWRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT 8.0 RISK CHARACTERIZATION

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 8-1 RAM -ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT 9.0 CONCLUSIONS

RAM Environmental's findings are set forth below.

a.) A release of OHM to the environment has occurred as a result of the former Boston Junk and railroad operations.

b.) The disposal site encompasses the SAK, EI, Massport/Cypher Street; and C&H properties.

d.) Based upon Sanborn Maps dating to 1922, prior to 1947 as well as throughout the 1970/80s the disposal site was utilized as a railroad yard. A moveable electric hoisting crane was located within these former railroad track locations. The crane was a 35 ton gantry crane that likely was utilized for railroad engine and car maintenance in this area.

f.) The potential source of the elevated levels of lead would be consistent with, batteries, spent motor or lubricating oil or potentially fill that is ubiquitous to thearea.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 9-1 RAM ENVWRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT i) Over 400 samples soil and groundwater samples have undergone laboratory analyses (does not include the samples set forth in Section 3.3) as summarized in Table C-1, Appendix C.

j) PCBs, lead, EPH and TPH are the compounds of concern in soil at the disposal site.

im.) There are seven locations that exceed Upper Concentration Limits ("UCLs") in soil, plus three above ground soil piles indicated in Figure 2-1, Appendix A. Elevated concentrations of PCBs exceeding 100 mg/kg are shown in Figure 2-1 and 4-2. PCBs exceed 100 mg/kg at approximately 3 to 5 feet below grade in Areas A and B. In Areas SS-28, SS-64 and SS-92, PCBs exceed 100 mg/kg to approximately 1 to 3 feet below grade. In Areas 221-B08 and 221-B04, PCBs exceed 100 mg/kg approximately 5 to 10 feet below grade respectively. Areas A and B and the above ground soil piles exceed TCLP thresholds for lead.

o.) Four (4) geological units were identified at the disposal site. The upper most unit (Unit A) consists of four (4) to 16 feet of fill. The majority of the fill is sand and gravel containing coal, brick, ash, concrete, bone, glass and wood fragments. In some locations this fill consists primarily of sand and in three (3) locations the soil borings a describe a silty fill in the lower portions of the fill unit. Unit B underlies the fill and

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 9-2 IAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT consists of sand or silty sand. This unit is discontinuous with a maximum thickness of eight (8) feet. Unit C consists of silt, clay and fine sand, and the upper contact was encountered at four (4) to 16 feet below grade. None of these soil borings encountered bedrock.

r.) The horizontal hydraulic gradient at the disposal site, (under an assumed steady state of conditions) is approximately 0.032 ft/ft on the northeast side of the groundwater trough, and 0.047 ft/ft on the southwest side of the groundwater trough. RAM Environmental estimates groundwater velocity in Units A and B to be between 9.07 and 13.32 ft/day (3,311 and 4,862 ft/year) and between 9.07 x 106 and 1.33 x 10- ft/day (0.0033 and 0.0049 ft/year) in Unit C. Since the estimated groundwater velocity in Units A and B is six (6) orders of magnitude greater than the estimated velocity in Unit C, the contact between these units would be expected to influence groundwater flow direction, as observed at the disposal site.

t.) A Risk Characterization will be conducted in the future.

S:\RAM\ 106.24\99REP\PH2RPT.WPDa Page 9-3 RAM ENVIRONMENTAL REMEDIATION * ASSESSMENT * MANAGEMENT u.) Further Comprehensive Response Actions are necessary to identify, evaluate, and select remedial action alternatives.

S:\RAM\106.24\99REP\PH2RPT.WPDa Page 9-4 RAM INVWRONMENTAL S EMEDIATION *ASSESSMENT * MANAGEMENT 10.0 LIMITATIONS

3. This report is for the sole use of BECo. Any reuse or reliance on this report by any other third party shall be done only with the written consent of RAM Environmental.

4. The findings, observations, opinions conclusions and recommendations are not intended to and do not imply a warranty or a guarantee and are based solely upon site conditions at the time of RAM Environmental's investigation. The findings, observations, opinions conclusions and recommendations should not be considered an opinion concerning the compliance of any past or present owner or operator of the Site with any federal, state or local law or regulation. Nothing in this report constitutes a legal opinion or legal service and should not be relied upon as such.

Page 10-1 APPENDIX A FIGURES

Figure 1-1 Site Locus Map Figure 1-2 Disposal Site Map Figure 2-1 Estimated Extent of OHM Figure 4-1 PCB Cross Section Locations Figure 4-2 PCB Cross Sections A-A' and B-B' Figure 5-1 Geologic Cross Section A-A' and B-B' Figure 5-2 Groundwater Contour Map FIGURE 1-1 Site Locus Map Boston Junk, South Boston, Massachusetts Source: U.S.G.S Boston South, Massachusetts Quadrangle, 1987 7.5 x 15 minute series (topographic) Scale 1:25 000 Earthvisions G-REF software Ver. 1.2, 1996

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Table C-I Historic Samples Submitted for Laboratory Analyses

VPH PCB -EPH

DepthPAHs VOCs Total TCLP C5-C8 (8260) Metals Metals No. Location (fbg) TPH Fingerprint Total 1260 1248 1242 1016 1232 1221 1254 Total C9-C18 C19-C36 CII-C22 Total C9-C12 4C9-C10

1 s051-o0 I 4 4 2 051-BOI 13 4 4 3- 051-B024 4 4 4 4 4 051-B02 11 4 4 4 5 05 [-803 5 -.. 6 051 -03 9 4 4 4 7 051-B04 14 4 8 051-B04 9 9 052-B01 5 4 4 4 10 052-BOL 15 _4 -- 4 4 4 4 4 4 4 "4 "4 I1I 052-B02 125-15 52-B02 . ... -- 12 052-802 15 13 052-803 2 14 052-803 9 4 4 4 15 052-804 5 4J4 4 4 4 4 4 4 4 1602,4s _ _ _ 4 16 052-B04 15 4 4 4 17 052-LIA .7 4 4 4 18 052-LIB .5 19 052-T01 1.5 4 4 4 4 20 052-To01 7.5 4 4 4 4 4 4 4 21 052-T02 1.5 4 4 44 4 4 4 4 22 052-T02 6.5 4 4 4 4 4 4 4 4 4 4 23 052-T03 1.5 4 4 __ 4 4 4 4 4 24020 ss_ ___ 4 4 24 052-TO3 55 4 5 4-4 "4 4 4 4 4 4 4 4 25 26 053-B01530 I]4 4 26 053-B01 15 4 4 4 27 053-802 I4 4 4 4 28 053-802 9 - "4 4 4 4"__ 4 4 _ _ 4 _ 0-10._ __ - _ 4- 29 05 5-B03, ...... - w 1"4 . " --- -- 30 03-03O 15 4 4 4 4 4 4 31 053-Bo04 14 .4 __"4 32 053-BQ 4 9 4" 4" 4 33 053-B05 - 5 34 053-Bo5 9 053-Bo05 19 35 4 36 053-BO6 5- 4 44 4 053-B06 15 37 4 38 053-BO6A 7 4 15 39 053-BO6A 4 4 } 03-B07)4 " 4 4 4 4.4 4 "4 4 40 053-B07 2 4 -__4 4 4 4 4 41 053-B02 9 4 4 4 4 42 071-B01 2 43 071-B01 9_ " 4 44 071-BOIA 1 4 4 4 4 45 071-BOIA 9 4 4 ._4 -4 -4 4 46 071-B02 5 4 4 _ ...-- 44... 47 071-B02 I 48 071-BO02A 5 . 4 4 4 4 4 49 071-BO2A 15 " 50 072-B01 5 ____"I '-_" 51 072-801 15 4 4 52 072-B02 1 4 4 4 4 4 4 4 4 4 4 53 072-802 9 4 54 073-801 55 073-801 9 -". ------56 073-80! 15 57 073-BO1A 3'4 4 58 073-B01A 9 -- 59 073-B02 I1 4 -4 .. 073-802 3 4 4 60 4 61 073-802 9 62 073-BO2A 1 4 -- 63 073-B02A 9_ 4 4 4 4 4 64 191-801 I4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 65 191-801 94 4 4 4 4 4 4 4 4 4 4 66 191-802 5 4 4 4 4 4 4 4 4 4. 4 1 4 4 4 -__ 4 4 4 _ 67 191-802 681183-444 44 4 4 ,4 4 4 4 4 4 68 191-B03' "4 4 4 4 4 4 4 4 69 191 -B03 9 4 4 4 4 4 4 4 4 4 4 4. 4 4 < 4 4 4 70 191 -B04 4 4 4)4 4 "4 4 " 4 44 71 191-B04 11 4 _ "4- " 4 . 4 4 "4 72 191-BO35 - 4 4 4 4 4 73 191-805 9 4 4 4 4 44 " 4 . 4 74 191-806 1 4 " 1 4 4 _ -_ , -4 4 .4 "_ 76 191-B-B06 O7 [ "4 4 "N N 4 4,4 75 191 _ __ __ 4 __", -4. - "4 N4 _ _ "_ 4 4 4 4 76 191l-B07 ___ 4 4 4 4 __/ J 4 _-__ q. 4 " 4 4 4 4 4 __ 74]]B18 t___ 4 4 4 77 191-B07 9 4 4 78 191-808 74 4 4 4 4 79 191-B08 16 4 4N N NN4

80 191-809 I 4 4 _ _ 81 191-B809 9 4 4 4 4 4 4 4 82 191-810 4 4 4 4 4 4 4 4 4 4 83 191-810 114 4 4 4 4 4 "4 4 4 4 44 4 / 4 84 191-811 26 4 4 4 4 4 4 4 4 4 85 191-812 6 4 4 4 4 4 4 4 4 86 191-812 22 4 4 4 4 4 4 4 4 4 4 87 191-812 36 4 4 4 4 4 4 4 88 191-813 7 4 4 4 4 4 4 4 89 191-813 164 4 4 4 4 4 4 4 4 4 4 4 4 4 4 90 191-814 64 4 4 4 4 4 4 4 4 4 4 4 4 4 4 91 191-B14 16 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 92 191-B15 6 4 4 4 4 4 44 4 4 4 4 4 4 4 4 93 191-815 164 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 94 191-816 6 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 " 95 191-816 19 4 4 "4 4 4 4 4 4 4 4 4 4 4 96 191-B1 4 4 4 4 4 4 4 4 4 4 4 4 97 191-817 154 4 4 "4 4 4 4 1098 191-B18 4 4 4 4 4 4 4 4 4 " 4 4 4 4 99 191-8 9 4 4 4 4 4 4 4 4 4 4 4 10 91-8019 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

" ' " " 104 221-803 21 "__"_ "4 "_ "7-"7" 7 , - - "7 - 77 vm 10 9 221-801 5T m- -- 10I 221-802 9 " m 107 221-802 2 _m m m m ------m m m m m 2 m m m m"4" 7-" m m74" "7 m"4 m"7 m"7 m" m m"4", m m " 109108 22221-03 1-3013 9 ______74 T77"-7.

Table C-I Historic Samples Submitted for Laboratory Analyses

VPH PCB -EPH

DepthPAHs VOCs Total TCLP C5-C8 (8260) Metals Metals No. Location (fbg) TPH Fingerprint Total 1260 1248 1242 1016 1232 1221 1254 Total C9-C18 C19-C36 CII-C22 Total C9-C12 4C9-C10

" . --4 --- - " - -, r "4 110 221-804 2 "_ " " .. " - "T m m m m m m m m m m m' _ 1111201_i 2222-B0X221-309 1-304 159 0 __ 4"..... r-mmm4""4" m~ m4m"i m"m - m4m"m - m4m mm4 ,m"m4 m4.1 m4"mI, m4 m4I- mm...." m"q - m4-J' m m I| /- - "- " I / "- m"4- m 1 m4 I"4 m ______" T -m m 22-B05 4 ______, m4 m4 mm . 1111.2 3 221-305 6 _4 m" 4 " m4 m m4 m4 "4 c4 r4 "- "7 rr -. T "T "4 ______"4 7-4 7- 7- 7- m - 114 22 1-806 II m4 "m m4 m4mm" m, m 115 22 1-806 2 m4 m4 m4 m4 m4 m m4 m4 m" / " 4 4 "- "- "4 "4 7- "7 " "4" , 116 22 1-807 2 ______7- m m m 117 22-07 9 _ m "m " m4 " m4 m4 m4 m4 m4 m4 m4 m4 m m " 47 4T ____"_ 7.777. " , "_ _ 118 22 1-B08 15__ "T T h1 7W7 74 T4 T Tq T 7- Table C-1 Historic Samples Submitted for Laboratory Analyses ------l VPPH PCB EPH 1 VOCs Total TCLP No. LoationPAHs Metals Total C9-C18 C19-C36 CI1I-C22 PAHs (8260) Metals 1248 1242 1016 1232 1221 1254 Total I C5-CSI C9-C12 (C9-C10I Locationeth TPH Fingerprint Total 1260 No. (fbg) 4 444 4 4 4 4 1 051-B01 44 - ,__.__. _ .4 .4___ 2 051-B01 13 - 4 4 4 4 4 4 44 051-B02 5 4 4 4 4 .4_ 1 -" 4 4 051-B02 4 4 4 4 5 051-B(3 5 _ 4-4 4 4 4 4 6 051-B03 9 4 4 __ 4 _ 4 4 4 4 4 7 05I-B04 1 4 4 4 4 4 . 8 051-B04 9 4 4 4 4 4 _ 4 9 052-BO01 -4 4 4154 10 052-B01 4 4 4 4 4 4 4 4 11 052-B02 5 4 4 4 44 . 12 052-B02 15 4 -4 4 .4 4 13 052-B03 2 4 4 4 14 052-803 9 4 4 4 4 4 15 052-804 .4 .4 4 -4 4 4 16 052-804 15 4 I I -I 17 052-LIA .7 - '4-- 4 _ _ _ _ _ 18 052-LIB .54 4 4 4 19 052-701 1.5 4 4. ______4 V/ , t _ _ _ _ 20 052-T01 7.5 21 052-T02 1.5 4 4 4 4 4 4 4 I t ~ I 9 1 1 9 052-T02 6.5 4 4 22 I 4- I I -11 1.5 23 052-T03 __ _ 4. 4 4 ___ 4 4 24 052-T03 5.5 ,_ , ._ . 25 053-301 5 -- 26 053-B 01 15 _ _ _" - .4 - -: - 27 053-B02 1 - 4 4.. ~ - 28 053-Bt02 9 . 4 4 4 4 4 29 053-803 54 , 4 4 4 4 4 4 30 053-803 15 4 4 4 4 __ 053-804 1 31 4 4 4 _4 4 32 053-B04 9 - 33 053-805 5 -- - 34 053-805 9 - .. 4 4 4 4 35 053-B05 19 4 4 4 4 4 4 __ 36 053-806 5 .- 4 4" 37 053-B06 15 ___ 38 053-B06A 7 ______$ I I .7 .1 39 053-306A 15 _ 40 053-B07 2 ------.4 .4 41 053-B07 94 4 4 42 071-B01 2 .___ 43 071-BOI 9 ___ 44 071-B01A 14 4 4 4 45 071-BO0IA 9 46 071-802 54 4 4 4 4 4 4 4 47 071-802 15 4 I__ 48 071-B02A 54 4 4 4 49 071-BO2A 15 .- 4 4 4 4 . ' 4 _ 50 o7072-801 5_ .4 4 51 072-B01 15 52 072-802 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 53 072-B02 9 4 4 4 4 _ " 54 073-801 4 4 4 44 55 073-801 9 56 073-801 15 57 073-BoIA 3 4 4 4------

58 073-BOA 9 4 4 4 4 4 59 073-B02 1_4 4 4 41 4 60 073-B02 3 4 4 4 4 4 4 4 61 073-802 9 _ __ __ I

62 073-BO02A 1 4 4 4 4 4 63 073-BO2A 9 64 191-B01 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 65 191-B01 9 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 66 191-B02 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4

67 __-_02 15 _4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 68 1914303 1 . __ _4 4 4 .4 4 " 4 4 4 4 4 4 4 4 4 4 4 69 191-B03 9. ______4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 70 191-B04 5 4 4 4 4 4 4 4 4 4 4 71 191-B04 11 .. 4 4 4 4 4 4 .4 .4 . 4 4 4 4 4 4 72 191-805 14 4 4 4 4 4 4 4 4 4 .4 4 4 4 4 4 7 191-B05 9 4 4 4 4 4 4 4 4 4 4 4 4 4 4

74 19 -B06 _ I 4 4 4 4 4 4 4 4 4 4/ _ _ 4 4 4 4 4"_ 754194-B06 94 4 4 4 76 191-B07 I 4 4 4 4 44 4 4 4 4 4 4 4 4 77 191-B07 94 4 4 4 4 4 4 4 4 4 4 78 191-B08 74 4 4 4 4 4 .4 4 4 4 79 191-B08 164 4 4 4 4 4 4 4 4 4 4 4 0 191-o9 4 4 4 4 4 4 .4 4 4 4 4 .4 4 4 4 4 81 194-B09 94 4 4 4 4 4 4 4 4 4 82 191-BO 5 4 4 4 4 4 4 4 .4 4 4 4 4 4 4 4 4 4 83 191-BI0 114 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 84 191-Bi 26 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 85 191-B12 64 4 4 4 4 4 4 4 86 191-B12 4224 4 4 4 4 4 4 4 4 4 87 191-BJ2 .364 4 4 4 4 4 98 191-13 7 4 4 4 4 4 4 4 4 4 4 4 4 4 4

89 191-81 3 16 4 4 4 4 4 _ _ _ _ I_ 90 191-B4 6 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 91 191-B14 16 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 92 191-815 6 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 93 191-815 16 4 4 4 4 4 4 44 4 4 4 4 4 4 94 191-816 6 4 4 4 4 .4 4 4 4 44 4 4 4 4

95 191-8B16 1 _1 _ _ _ __4 4 '_ " _ ' _ _ 96 191-817 3 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 97 191-B17 154 4 4 4 4 4 4 4 4 . 4 4 4 4 4 98 191-818S 99 191-818 9 100 191-B19 5 101 191-B19 154 4 4 4 4 4 4 4 4 4 4 4 4 4 4 102 191-B120 3 4 4 4 4 " 4 4 .44 103 191-B20 9 4 4 4 4 4 4 4 4 4 4 4 104 221-BO1 2 .4 4 105 221-801 54 .4 "4 4 4 106 221-B02 I1 4 4 4 4 4 107 221-B02 2 r

10 221-B03 2 _ 109 221-B03 9 110 221-B04 5 _ Il1 221-804 9 _ - 112 221-B05 4 7 Y T 113 221-BO5 6 4 _ 114 221-B06 I11 "4 115 221-B06 2

116 221-B07 2 _ - 117 221-BO07 9 - I__ 7 118 221-Bo08 15 I 4 119 22 1-08 5 ! 4:

Table C-1 Historic Samples Submitted for Laboratory Analyses

PCB EPH VPH

Depth VOCs Total No. Location No LctinTPH Fingerprint TCLP PAHs (flUG Total 1260 1248 1242 1016 1232 1221 1254 Total C9-CI8 C9-C36 Cll-22 Total CS-C8 C9-C12 C9-C1(0 (8260) Metals Metals

344 SS-52 1-2 "-- -- == -=- - - 345 SS-52A 0-1 346 SS-52A 1-2 347 SS-53 0-1-- 348 SS-53 1-2 .4 4 4 4 4 349 SS-53 1-2 350 SS-53 2-3 351 SS-54 o-1 352 SS-55 0- ___4.4- 4 4. 353 SS-55 1-2 -- 354 SS-55 2-3 4--4- 4__ 355 SS-56 0-1 .4 356 SS56 1-2 357 SS-57 (-. 358 SS-57 1-2 359 SS-59 0--4 . m m m 360 SS-59 1-2 361 SS-60 0-1 362 SS-6 10-I I4. - 363 SS-62 _ _. 364 SS-63 -40-1- 365 SS-63 1-2 . 366 SS-63 2-3 . 367 SS-64 0-I __/-_. 368 SS-64 1-2 369 SS-65 0-1I 370 SS-65 1-2 371 SS-66 0-1 372 SS-66 1-2 I 373 SS-67 0-1 374 SS-67 1-2 375 SS-68 0-1 376 SS-68 1-2 377 SS-68 2-3 378 SS-69 0-1 I 379 SS-70 0-1 380 SS-70 1-2 381 SS-72 0-1 382 SS-72 1-2 _ 4 * - 383 SS-72 2-3 38,1 SS-7315- oJ 385 S -74 0-I1q ." -I mr ...... 386 SS-74 1-2 -"4" m -m 387 SS-75 1-2 ____ "."__ 388 SS-75 2-3 389 SS-76 0-I - " 390 SS-77 0-1 391 SS-77 1-2 m 392 SS-79 0-1"T4 393 SS-79 1-2 " m 394 SS-79 2-3 395 SS-80 0-i 396 SS-80 1-2- 397 SS-80 2-3 398 SS-8 J0-1 . 399 SS-81 1-2 400 ss-81 2-3 401 SS-82 0-1 402 SS-82 1-2"T- 403 SS-83 0-1 404 SS-83 1-2"-IT 405 SS-84 0-I 406 SS-84 1-2 T 407 SS-84 2-3"4 408 SS-85 0-1 409 SS-85 1-2 410 SS-85 2-3 41 SS-87 0-1 "-7 7" 413412 SS-88 1-20-1 _mSS-m - m

414 SS-88 2-3 I 415 ss-89 0-1 416 SS-89 t-2 I 417 SS-89 2-3 418 ss-90 -1 419 ss-90 1-2 |4' 420 ss-90 2-3 421 SS-91 0-I1 422 SS-91 1-2 423 SS-91 2-3 v _ _ m m m 424 SS-92 0-1 425 SS-92 1-2 426 SS-92 2-3 427 SS-93 0-1 428 SS-94 0-1 430429 SS-96SS-95 0-1 r0-Iw v mv v - r - m m-

431 SS-97 0-1 v v v 432433 SS-99SS-98 0-1 4 4

APPENDIX C LABORATORY ANALYTICAL SUMMARY TABLES

C-1 HISTORICAL SAMPLES SUBMITTED FOR LABORATORY ANALYSIS

C-2 COMPOUNDS DETECTED IN SUBSURFACE SOIL

C-2 COMPOUND DETECTED IN GROUNDWATER APPENDIX D SOIL BORING LOGS AND MONITORING WELL CONSTRUCTION LOGS PROJECT REPORT OF BORING No. 272-801 Weston & Sampson BRA-BCEC SHEET I OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. -DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/23/99 DATE END 2/23/99

SAMPLER. Unso CSE AstERorscowrs ssPursPooN GROUNDWATER READINGS DRIvaN IN A 14o , sn FAJNG no DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: unfess omnnsb oro. cs nusnrsa e a . 2/23 1030 -6' - None FAU.NG 24 bt. CASING SIZE NwA OTHER 4 114" HSA

)PTCASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (Ibi) No. PEN/REC (in) DEPTH (tit) BLOWS/ (ppm) Bumister Classification S-1 24/10 0.0 -2.0 41-34- 2.4 Brown and black, f-c sand and 17-17 gravel FILL, little Brick and S-2 24/14 2.0-4.0 12-10- 24.6 Asphalt (1) 9-7 Same as S-1 5 S-3 24/14 4.0 -6.0 4-6- 13.1 Moist, dark brown and black, - FILL - r 4-6 f-m sand, ash and gravel FILL,

S-4 24/9 6.0 -8.0 2-2- 1.4 -. trace Cobbles and Brick 2-2 Wet, gray and brown, f-m sand and silt FILL, trace fine Gravel, 9.0 10 trace broken Ceramic and Brick S-5 24/4 10.0-12.0 2-2- 4A Saturated, black, f-c SAND, little (2) 2-3 black Silt and Organic Fibers - SAND -

... __ _(3) EOB @ 12.5' 15

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWSIFT DENSITY BLOWSFT DENSITY (1) Slight petroleum odor. 0-4 V. LOOSE 0-2 V. SOFT (2) Organic odor (non-petroleum). 4-10 LOOSE 2-4 SOFT (3) Instructed drillers to auger to 12.5' to set well. 10-30 M. DENSE 4-8 M. STIFF Well 272-WOI was installed in this boring. 30-50 DENSE 8-15 STIFF Set well @ this location due to petroleum odor. > 50 V.DENSE 15-30 V. STIFF >30 HARD NOTES: I1)THE STRATIFCATION LINES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE SBORING No. 272-801 G:ciSUTTOMRACr Crests 27-23.2J4nearbylsjCST-B11 GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA-BCEC 98121A MONITORING WELL NO. LOCATION SAK Recycling - AG 27 272-WOI CLIENT BRA ELEVATION CONTRACTOR Earth Exploration DRILLER T. Tucker TOP OF PVC OBSERVED BY Chris McDermott DATE 2/23/99 DEPTH TO GROUNDWATER FROM CHECKED BY DATE TOP OF PVC

GROUND <------LENGTH OF CASING ABOVE GROUND SURFACE 0.5 fl ELEVATION <----- LENGTH OF RISER PIPE ABOVE 3 ft. GENERAL SOIL CONDmONS GROUND SURFACE (NOT TO SCALE) THICKNESS OF SURFACE SEAL(S) 0.5 ft. <----- TYPE OF SURFACE SEAL(S) cement

< I----TYPE OF SURFACE CASING cast iron stickup ID OF SURFACE CASING 4 in.

<----- DEPTH BOTTOM OF CASING 1.5 ft

ID OF RISER PIPE 2.0 in. TYPE OF RISER PIPE Schedule 40 PVC

<------TYPE OF BACKFILL AROUND RISER PIPE . #1 Sand

DEPTH TOP OF SEAL 1.0 ft. <- TYPE OF SEAL Bentonite Chips DEPTH BOTTOM OF SEAL/TOP OF 1.5 fL SAND COLUMN <- DEPTH TOP OF SCREEN 2 ft

<---- TYPE OF SCREEN Schedule 40 PVC SIZE OPENINGS 0.010 in. ID OF SCREEN 2.0 in.

<- TYPE OF BACKFILL AROUND SCREEN #1 Sand

---- DEPTH BOTTOM OF SCREEN 12 ft.

<- DEPTH BOTTOM OF SAND COLUMN 12.5 ft.

<----- TYPE OF BACKFILL BELOW SCREEN #1 Sand

<- DIAMETER OF BOREHOLE 8.0 in. <- DEPTH BOTTOM OF BOREHOLE 12.5 ft.

NOTES: MONITORING WELL NO. See boring log 272-Bl0 272-W01 WESTON & SAMPSON ENGINEERS, INC.

GSUTTONMBORC Cenwt.Logsjgp 27-2.3.4rIeabyxs]CST-611 PROJECT REPORT OF BORING No. 272-B02 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/23/99 DATE END 2/23/99 SAMPLER: ns onenS NO E. SAWLa nCsissousr sur SPOON GROUNDWATER READINGS DRIVENuR usG FuNG A 3 n DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: unEss o or. 2/23 1140 --6' - None FALLING 24 irt CASING SIZE N/A OTHER: 4 1/4" HSA

DEPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTiENOTE STR3ATUSTRATUM M DESCRIPTION (feet) (Ibit) No. PEN/REC (in) DEPTH (IfI) BLOWS/6" (ppm) Burmister Classification S-1 2410 0.0 -0.8 27-100/2" - No Recovery (1)

S-2 24/14 2.0 -4.0 12-10- 1 Brown and black, f-c sand and 4-4 gravel FILL, littleBrick and Ash 5 S-3 24/16 4.0 -6.0 2-15- 1 Same as S-2 -FILL - 7-6 S-4 24/6 6.0 -8.0 2-3- 1.2 Wet gray and white, f-c sand 2-2 FILL S-5 24/6 8.0-10.0 1-1- 1.5 Saturated, dark gray, f-c sand (2) 9.0 10 1-1 FILL S-6 24/2 10.0- 12.0 2-1- 1.1 Saturated, dark brown and gray, - SAND - 1-1 f-c SAND, trace Shells

(3) EOB @ 12.5' 15

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWS/FT DENSITY (1) Augered to 2 feet through slag. 0-4 V. LOOSE 0-2 V. SOFT (2) Organic odor. 4-10 LOOSE 2-4 SOFT (3) Instructed drillers to auger to 12.5' to set well. 10-30 M. DENSE 4-8 M. STIFF Well 272-W02 was installed in this boring. 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF >30 HARD NOTES: 1) THE STRATIFICATION UNES REPRESENT THE APPROXJMATE BOUNDARY BETWEEN SOIL TYPES. TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE. BORING No. 272-B02

G:~SUTfM CeNitertgsl p 27.2,3,4+nearyis]CST-Btl GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA-BCEC 98121.A MONITORING WELL NO. LOCATION SAK Recycling - AG 27 272-W02 CLIENT BRA ELEVATION CONTRACTOR Earth Exploration DRILLER T. Tucker TOP OF PVC OBSERVED BY Chris McDermott DATE 2/23/99 DEPTH TO GROUNDWATER FROM CHECKED BY DATE TOP OF PVC

GROUND - LENGTH OF CASING ABOVE GROUND SURFACE 0.5 fL ELEVATION <- LENGTH OF RISER PIPE ABOVE 3fIt. GENERAL SOIL CONDITIONS GROUND SURFACE (NOT TO SCALE) THICKNESS OF SURFACE SEAL(S) 0.5 It. <----- TYPE OF SURFACE SEAL(S) cement

I TYPE OF SURFACE CASING cast iron stickup ID OF SURFACE CASING 4 in.

<------DEPTH BOTTOM OF CASING 1 ft

ID OF RISER PIPE 2.0 in. <-- TYPE OF RISER PIPE Schedule 40 PVC

<------TYPE OF BACKFILL AROUND RISER PIPE #1 Sand

DEPTH TOP OF SEAL 1.0 ft <- TYPE OF SEAL Bentonite Chips DEPTH BOTTOM OF SEAL/TOP OF 1.5 ft. SAND COLUMN <- DEPTH TOP OF SCREEN 2 ft.

TYPE OF SCREEN Schedule 40 PVC

<- TYPE OF BACKFILL AROUND SCREEN #1 Sand

- DEPTH BOTTOM OF SCREEN 12 ft.

<- DEPTH BOTTOM OF SAND COLUMN 12.5 ft.

- TYPE OF BACKFILL BELOW SCREEN #1 Sand

DIAMETER OF BOREHOLE 8.0 in. DEPTH BOTTOM OF BOREHOLE 12.5 ft.

NOTES: MONITORING WELL NO. See boring log 272-BO2 272-W02 WESTON & SAMPSON ENGINEERS, INC.

SG:.JrTONaPAcotve nCenteMt osgp 27.2,3,4A+nearbyxs]CST-B11 PROJECT REPORT OF BORING No. 272-803 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/23/99 DATE END 2/23/99

SAMPLER: uisso wssoo rn~. ss.n CoNsIsTs OF s ur spooN GROUNDWATER READINGS DRIVENUSING A 4o uH.MER FALING 30 in. DATE TIME WATERAT CASING AT STABILIZATI ON TIME CASING: u2ssonwenom s.c eNusi.Nom. nV 2/23 1330 -6' - None FALUING24 I. CASING SIZE NA OTHER: 4 1/4" HSA

DEPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (llit) No. PENIREC (in) DEPTH (It) BLOWS/6" (ppm) Burmister Classification S-1 24/18 0.0 - 2.0 40-36- ND Brown to black, f-c sand and 27-14 gravel FILL, little Ash and Brick - FILL - S-2 24/14 2.0 - 4.0 11-8- 1.1 Light brown, fine sand and black 9-8 f-c sand and gravel FILL 4.0 5 S-3 24/16 4.0 - 6.0 2-1- 1.8 Wet, dark gray and black, SILT 5-4 and SAND - SILT and SAND - S-4 2412 6.0 - 8.0 3-2- 1.4 Saturated, dark gray, SILT, f-c 2-2 SAND, trace Shells 8.0 S-5 24/4 8.0-10.0 1-1- ND Saturated, dark gray, f-c SAND,\ 10 1-1 trace Shells S-6 24/6 10.0 - 12.0 2-1- ND Same as S-5 -SAND- 1-1

__(1) EOB @ 12.5' 15

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWS/FT DENSITY (1) Instructed drillers to auger to 12.5' to set well. 0-4 V. LOOSE 0-2 V. SOFT Well 272-W03 was installed in this boring. 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATI.CATION LINES REPRESENT THE APPROX IMATE BOUNDARY BETWEEN SOIL TYPES. TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS NAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLIUCTLIATIONS IN THE LEVEL. OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE BORING No. 272-803

G:SUTTONWACraurn CcJ sp 27.2,3,4+nea t .JSTBi1 GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA-BCEC 98121.A MONITORING WELL NO. - LOCATION SAK Recycling - AG 27 272-WO3 0 CLIENT BRA ELEVATION CONTRACTOR Earth Exploration DRILLER T. Tucker TOP OF PVC OBSERVED BY Chris McDermott DATE 2/23/99 DEPTH TO GROUNDWATER FROM CHECKED BY DATE TOP OF PVC

GROUND I <-- LENGTH OF CASING ABOVE GROUND SURFACE 0.5 ft. ELEVATION | I - LENGTH OF RISER PIPE ABOVE 3ft GENERAL SOIL CONDITIONS GROUND SURFACE (NOT TO SCALE) THICKNESS OF SURFACE SEAL(S) 0.5 ft. <---- TYPE OF SURFACE SEAL(S) cement

TYPE OF SURFACE CASING cast iron stickup <- ID OF SURFACE CASING 4 in.

<- DEPTH BOTTOM OF CASING 1 ft.

ID OF RISER PIPE 2.0 in. <- TYPE OF RISER PIPE Schedule 40 PVC

------TYPE OF BACKFILL AROUND RISER PIPE #1Sand

DEPTH TOP OF SEAL 1.0 ft. <- TYPE OF SEAL Bentonite Chips DEPTH BOTTOM OF SEAL/TOP OF 1.5 ft. SAND COLUMN DEPTH TOP OF SCREEN 2 fL

TYPE OF SCREEN Schedule 40 PVC <- SIZE OPENINGS 0.010 in. ID OF SCREEN 2.0 in.

<------TYPE OF BACKFILL AROUND SCREEN #1 Sand

<- DEPTH BOTTOM OF SCREEN 12 ft.

<- DEPTH BOTTOM OF SAND COLUMN 12.5 ft.

<- TYPE OF BACKFILL BELOW SCREEN #1 Sand

<- DIAMETER OF BOREHOLE 8.0 in. < - DEPTH BOTTOM OF BOREHOLE 12.5 ft.

NOTES: MONITORING WELL NO. See boring log 272-B03 272-W03 0 WESTON & SAMPSON ENGINEERS, INC.

G: SUTfOMNW- C vent.on Centertogs\gp 27-2,3.4+neaotyiJdSTD11 PROJECT REPORT OF BORING No. 272-BO4 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/1/99 DATE END 3/3/99

SAMPLER: URsomwseNoisna .CONSISTS oF SPUr spooN GROUNDWATER READINGS DRNifnusfAi4oIaHM FAUiGok DAE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: urss o -WE or. cAs rEnusin HAmS 3/1 0930 -3' - None FAULNG24 . CASING SIZE wA OTHER: 4 1/4" HSA EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (Ibit) No. PENIREC (in) DEPTH (ft) BLOWS/" (ppm) Burmister Classification

S-1 24/8 2.0-4.0 13-14- 1.1 Moist, dark brown, f-c sand and 19-19 gravel FILL, trace Ash 5 S-2 24/8 4.0 - 6.0 10-6- 1.5 Wet, brown and dark brown, f-c - FILL - 5-4 sand and gravel FILL S-3 24/8 6.0 - 8.0 3-2- ND Wet, light gray and brown, f-c 3-2 sand and gravel FILL, trace Cobbles and Brick 9.0 10 S-4 24/10 10.0 - 12.0 1-2- ND Wet, black, gray, f-m SAND, 4-3 SILT, and CLAY

- SAND, SILT, and CLAY - 15 S-5 24/10 14.0- 16.0 1-7- ND Wet, gray, f-m SAND, SILT, and 5-8 mottled yellow and grayish-blue S-6 24/12 16.0 - 18.0 12-11- ND " CLAY,traceShells 10-9 Wet bluish gray, dark gray, f-m SAND, SILT, and CLAY 20 EOB @18.0'

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS.-FT DENSITY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRAFN&MiONSNMAY BE GRADUAL. 2) WATER LEVEL. READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE. BORING No. 272-B04

G \SUTTCN B CatesmtOgs[P 27-23.4 lewabyICST.-B 1 PROJECT REPORT OF BORING No. 272-805 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN rim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/1/99 DATE END 3/3/99

SAMPLER: UNEss o-nw s NO o. snwu consTs ror sPurspoon GROUNDWATER READINGS ORivnusA 140A nAERFA. 30kL DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: Uess on~wse Nmoe. CAslC o ussn . 'an 3/1 1220 -1' - None FALJN 24 hi. CASING SIZE NIA OTHER: 4 1/4" HSA

EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTrENOTE STRATUMSTRATM DESCRIPTIONDESCRIPTION (feet) (Ib/ft) No. PEN/REC (in) DEPTH (ft) BLOWSfl (ppm) Burmister Classification - FILL - - COBBLESTONES - S-1 24/8 2.0 - 4.0 16-5- ND Saturated, brown, black f-c sand 4-5 and gravel FILL, trace Brick 5 S-2 24110 4.0 -6.0 5-31- 1.2 Saturated, brown, light gray, 3-3 black, f-c sand and gravel FILL, S-3 24/4 6.0-8.0 2-1- ND trace Brick 2-2 Saturated, dark brown, f-c sand - FILL - and gravel FILL 10 S-4 24/0 10.0-12.0 4-4- - No Recovery 4-6 S-5 24/2 12.0- 14.0 5-3- ND Same as.S-3, small Bone ...... 3-3 fragments 15 NS 24/1 14.0-16.0 1-1- ND Wet, gray, SAND, SILT, and 15.0 2-3 CLAY, trace Shells S-6 24/24 16.0 - 18.0 4-4- ND Wet, gray, SAND, SILT, and -SAND, SILT, and CLAY - 4-5 CLAY, trace Shells EOB @ 18.0' 20-

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION UNES RRESENT THE APPROXiMATE BOUNDARY BETWEEN SOIL TYPES. TRANSITiONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME M ASUREMENTS ARE MADE BORING No. 272-BOS

G:rSUTOSCavr Cea~LeNgsp 27-2.3.4+mneartbyxis]CSBI PROJECT REPORT OF BORING No. 272-806 Weston & Sampson BRA-BCEC SHEET 1 OF ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 312/99 DATE END 3/2/99 SAMPLER: uns omsn.w.sz ,or. sauus casrs o r spur spoon GROUNDWATER READINGS DRIVENUsI A4ObA . AERFALU OGor DATE TIME WATER AT CASING AT STABILIZATIONTIME CASING: IsUss OT.wse NorED. CASINGneN USINGso . AMER 312 0800 -4' - None FA.NG 24 ir CASING SIZE N/A OTHER: 4 1/4" HSA EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOT STRATUM DESCRIPTION (feet) (Ibmi) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification

S-1 24/12 2.0 - 4.0 16-12- 1.1 Brown, gray, black, f-c sand and 9-9 gravel FILL, little Brick, Ash, - FILL - 5 S-2 24/2 4.0 - 6.0 14-15- ND Metal shards 10-4 Moist, dark brown, f-c sand FILL (1) S-3 24/2 6.0 - 8.0 2-2- ND Wet, brown and gray, f-mnsand 8-8 FILL, little Silt EOB @ 8.0' 10

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWSFTr DENSITY BLOWS/FT DENSITY (1) Not enough recovery for VPH sample. 0-4 V. LOOSE 0-2 V. SOFT Well was not installed in this boring. 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION ULINESREPRESENT THE APPROXMATE BOUNDARY BETWEEN SOIL TYPES. TRA KSTIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS ST ATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE BORING No. 272-806

G 1SUTTONBRZoM e Cetetgo~J 27.2.3.4+rmty.xi].CSTB 11 PROJECT REPORT OF BORING No. 272-B07 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/2/99 DATE END 3/2/99

SAMPLER uNss oTenwE NOnD. SAu R consisTs OF r SPuLTrsPooN GROUNDWATER READINGS C VEN USING A 140 t. HAMER FALING 30 DATE TIME WATERAT CASINGAT STABILIZATION TIME CASING: usso Snwar.cs s a. 3/2 0900 -3.5' - None FA'IG 24 kr CASING SIZE N/A OTHER: 4 14" HSA

)EP.= CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (lit ) No. PENIREC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification

S-1 24/10 2.0 - 4.0 48-12- ND Moist brown, black, f-c sand - FILL - 13-12 and gravel FILL, little Brick and 5 S-2 24/10 4.0-6.0 12-14- ND - Ash 5.0 10-10 Wet, brown and black, f-mrnsand N1 and gravel FILL, little - SAND - brown f-m SAND 10EOB @ 6.0' 10

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSrITY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M.DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: ) ,E STRATIFICATION UNS RPRESE ThE APPROxMA TE BOUNDARY BETWEEN SOL TYPES TRA %ONS MAY BE GRADuAL 2; WATER LEVEL READINGS HAVE BEEN MADE IN THE DRELLHOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEV L OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE BORING No. 272-B07

G :SUT"Cen t&ergp 27-2.3,4neart. .i)CST-B11 PROJECT REPORT OF BORING No. 272-B08 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/2/99 DATE END 3/2/99 SAMPLER: UessosmNsaoo.snptncons'sorssPurSPoo GROUNDWATER READINGS DREtNiNG A14O tA. ER FALUNG3 I. DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: UNUsso sc ovust so- bnw's~o.jusmnHsAe M 3/2 1030 -3.5' - None FALLING 24 irt CASING SIZE N/A OTHER: 4 1/4" HSA

EfPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (b/f) No. PEN/REC (in) DEPTH (if) BLOWS/6" (ppm) Burmister Classification

5 S-1 24/8 4.0 - 6.0 9-49- 1.2 Wet, black, brown, f-c sand - FILL - 28-10 FILL, trace Brick and Cobbles S-2 24/10 6.0 - 8.0 5-8- ND Wet, brown, gray, black, f-c 5-5 sand FILL, trace Brick, Wood S-3 24/8 8.0- 10.0 8-7- ND Wet brown, gray, f-c sand FILL, 9.0 10 11-16 little brown f-m SAND -SAND- EOB @ 10.0'

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWS/FT DENSITY Well was not installed in this boring, 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: I1) THE STRATIFICATION LUNESREPRESENT THE APPROXJIMATE BOUNDARY BETWEEN SOIL TYPES. TRANST.IONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LE'VEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THIAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE

SBORING No. 272-B08

GSUTTONfAA-Cawturt Cart.rogsUip 27.234+nearyis]CST- I PROJECT REPORT OF BORING No. 272-B09 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/2/99 DATE END 3/2/99

SAMPLER: .nss O,.wSe Nore. sAwuP conssts or spur soo" GROUNDWATER READINGS nENtus A o i. AmuER PAajuNG so iDATE TIME WATER AT CASING AT STABILIZATON TIME CASING: unsso-enw'seNor.casm R.nus o. .nan 3/2 1130 4' - None FAUJNG 24 r CASING SIZE N/A OTHER: 4 114 HiSA

EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTIONDESCRIPTON (feet) (Iblt) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification

S-1 24/18 2.0 - 4.0 7-3- 2.2 Black, brown, red, tan, f-rn sand 4-4 FILL, little Brick and Silt 5 S-2 24/16 4.0- 6.0 5-14- 1.2 Wet, brown, black, f-c sand and - FILL - 15-21 gravel FILL, little Brick. Ash. S-3 24/12 6.0 - 8.0 9-11- ND and Cobbles 6-6 Wet, brown, black, gray, f-c sand FILL, trace Bricks 10 EOB @ 8.0'

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSlTY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE S RATIFICATION UINES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSmONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREPAENTS ARE PAADE. BORING NO. 272-B09

G OJT NRACarorr Certer gsIlap 27.2.4neasy.xIcST.B 11 PROJECT REPORT OF BORING No. 272-810 Weston & Sampson BRA-BCEC SHEET 1 OF 2 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/2/99 DATE END 3/3/99

SAMPLER: . assotens ossco,.s,- sonrsauspooN GROUNDWATER READINGS DRvEN USING A oHAMfhERFALING3 h DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: uness wo CAe NOmcD.CASfra nAVNUS =o. HAmAER 312 1320 -4' None FALUING24 , CASING SIZE 4" (1) OTHER: -

DEPT CASDNG SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (Ibi') No. PENFREC (in) DEPTH (ft) BLOWS/6 (ppm) Burmnister Classification

5 S-1 24/16 4.0 - 6.0 5-9- 1.4 Moist black, brown, gray, f-mrn - FILL - 13-25 sand and gravel FILL, trace Ash, S-2 24/122 6.0 -8.0 6-2- 1.4 Silt 2-2 Moist black, brown, gray, f-c (2) sand and gravel FILL, trace

10 S-3 24/0 9.0 - 11.0 5-2- _Brick and Ash 10.0 2-1 No Recovery S-4 24/2 11.0 - 13.0 5-3- ND Wet, gray, f-m SAND, trace (3) -SAND- 2-3 Shells .. 13.0 .....

15 S-5 24/14 14.0- 16.0 3-2- ND Wet, gray, greenish, SILT and S4-2 CLAY, trace Sand

20 S-6 24/16 19.0 - 21.0 1-2- ND Wet gray, greenish, SILT and (4) 3-5 CLAY, trace Shells, Wood, - SILT and CLAY - Sand

25 S-7 24/24 24.0-26.0 1/24" ND Wet, gray, SILT and CLAY, trace Shells 27.0

30 S-8 24/24 29.0 - 31.0 3-3- ND Wet, gray and brown, SILT, (4) S4-5 CLAY, and PEAT - SILT, CLAY, and PEAT -

35 S-9 See page 2 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWS/FT DENSITY (1) Boring advanced using the "drive and wash" technique and 4 inch 0-4 V. LOOSE 0-2 V. SOFT cast iron casing. 4-10 LOOSE 2-4 SOFT (2) Sample collected using 3" spoon. 10-30 M. DENSE 4-8 M. STIFF (3) Not enough sample recovered for VPH sample. 30-50 DENSE 8-15 STIFF (4) Egg-like odor (hydrogen sulfide?) > 50 V. DENSE 15-30 V. STIFF Well was not installed in this boring. > 30 HARD .NOTES: 1) THE STRATIPR,-ATION UNES RERESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSrfiONS .AY BE GRADUAL 2) WATER LEVEL READINGS HAVE=SEEN MADE IN THE DRILL. HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORNG LOG. FLUCTUATIONS IN THE LEVE. OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREM--'TS ARE MADE BORING No. 272-BO10

G l5(.rTON18A C Cartertrogslgp 27-2.3,4+neaty.xtsJCST.l PROJEC REPORT OF BORING No. 272-810 Weston & Sampson BRA-BCEC SHEET 2 OF 2 ENGINEERS, INC. Project No 98121A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/2/99 DATE END 3/3/99

SAMPLER, u tss own seSoW= conszss or 2sur ooN GROUNDWATER READINGS oEmN USINGA 1.0 HAI4.R FALuG o DATE TiME WATER AT CASING AT STABILIZATION TIME CASING: uLOss oe s To. c m o,-. Us o s 3/2 1320 ~4' None FA MG 24 i CASING SIZE 4" (1) OTHER: -

-EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION ( eet) (lbIt) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification 35 S-9 24/24 34.0 -36.0 12-16- ND Wet, hard, bluish, yellow, 36-39 mottled CLAY - CLAY - (Boston Blue)

40 S-10 24/24 39.0 - 41.0 9-12- ND Same as S-9 13-12 EOB @ 41.0'

10__

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWSFT DENSITY BLOWS/FT DENSITY (1) Sample collected using 3" spoon. 0-4 V. LOOSE 0-2 V. SOFT (2) Not enough sample recovered for VPH sample. 4-10 LOOSE 2-4 SOFT (3) Egg-like odor (hydrogen sulfide?) 10-30 M. DENSE 4-8 M. STIFF Well was not installed in this boring. 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATiFICATION UNES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSiTIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS S7ATED ON THIS BORING LOG. RLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE BORING No. 272-810 G:SUTTO SR^t4t-8Cerileagto p27*2.3.4+neabytCT811 PROBJECTI REPORT OF BORING No. 272-B11 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/1/99 DATE END 3/1/99

SAMPLER: uNSS ornwise NOTEO.s weR cosists o r spur sON GROUNDWATER READINGS ORNEN us NGA 140 t.HfERFAUINGo 30 DATE TIME WATE-R AT CASING AT STABILIZATION TIME CASING: unassonso SE cAss0ronENuS m.sosmR 3/1 1330 -4.5' - None

FALING 24 Sl CASING SIZE N/A OTHER: 4 1/4" HSA

EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (t/) No. PEN/REC (inm)DEPTH (It) BLOWS/r6" (pprn) Burmister Classification I

S-1 24/12 2.0 -4.0 6-6- 1.4 Light brown and black, f-m sand 30-21 and gravel FILL, trace Ash and

5 S-2 24/8 4.0 -6.0 5-9- 1.4 - Brick - FILL - 15-4 Moist, brown and gray, f-mrn S-3 24/8 6.0 -8.0 33-19- ND - sand and gravel FILL 10-4 Wet, brown and gray, f-m sand - and gravel FILL 10 EOB @ 8.0'

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLCWS'FT DENSITY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION USES REPRESENT THE APPROXIMATE BOUNDARY BETHEEN SOIL TYPES- -RANSNTIONS MAY BE GRADUAL. 2) WATER LE"VEL READINGS .AVEBEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDfIT)IONS STATED ON T IS BORING LOG. FLUCTUATIONS IN THE LE - OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE P-ESENT AT THE TIME

MEASUREMENTS ARE MAZE SORING NO. 272-811

G:LSU T,4 A. CarteCasgp 27-2,3,4+netts) ST-B11 PROJECT REPORT OF BORING No. 272-B12 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/1/99 DATE END 3/1/99

SAMPLER LEss onews NOrm.SA nco'nsscR soe2, uspoon GROUNDWATER READINGS Ve UsING A140 Ib. HAERFALuN 3o t DATE TIME WATERAT CASINGAT STABILIZATION TIME CASING: usEssomRwson.icsCASIVENUSu30hsHAn 3/1 1400 ~4.5' - None FAD.LNG24 & CASING SIZE N/A OTHER: 4 1/4' HSA

)EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (Tt) No. PEN/REC (in) DEPTH (fI) BLOWS/6" (ppm) Burmister Classification

S-1 24/7 2.0 - 4.0 33-65- ND Gray, brown, black, f-c sand - FILL - 11-26 and gravel FILL, trace Brick and

5 S-2 24/10 4.0 - 6.0 22-19- ND - Cobbles 15-4 Wet same as S-1 EOB @ 6.0'

20_

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLCWS 'T DENSITY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION UNES RESENTr THE APROXIMATE BOUNDARY BETWEN SOIL TYPES. TRA STIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THSE PRESENT AT THE TIME MEASUREMENTS ARE MADE. BORING No. 272-B12 G:SUTlTA" in CeriteL qsgp27-2,3.4+neatyxIJ]CST.B 11 PROJECT REPORT OF BORING No. 273-B01 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/1/99 DATE END 3/1/99

SAMPLER unr.ss o~,w sE Nors. s,..PeR coNsIsts oF spmrspoo GROUNDWATER READINGS DR'N UsZIG A 14oA FAIJWNGSO. DATE TIME WATER AT CASING AT STABILIZATIONTIME CASING: u,ESS OTwssorse. cO a Mus US, om Rs 311 1030 -3' - None FAU.SNG24 A CASING SIZE N/A OTHER: 4 1/4" HSA

ICASING NEPT SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (It.t) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification

S-1 24/14 2.0 - 4.0 15-11 1.2 Wet, light brown and gray, f-m 11-14 sand FILL 5 S-2 24/12 4.0 -6.0 5-9- ND Wet, light brown and gray, f-m - FILL - 6-6 sand FILL, littlegreen medium S-3 24/12 6.0-8.0 5-22- ND Sand and Glass shards 5-4 Wet brown, gray, black, f-c sand and gravel FILL 10 EOB @ 8'

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOws.-T DENSITY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION UNS REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSTIONS MAY BE GRADUAL. 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDmONS STATED ON THIS BORING LOG. FaUCTUATIONS IN THE LEEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MAQE BORING No. 273-Bl0

asUTTOW a Ar.a lcgp 27-2,3.4.nuratyxeST-aI PROJECT REPORT OF BORING No. 273-802 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. . DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/1/99 DATE END 3/1/99

SAMPLER: urass onesuss. om. s.a' consisTs o r so sn" GROUNDWATER READINGS Di.iV.ENtsCAt4soauE FALNG 3oir DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: unu-sson s NOE.cconeaus o m 3/1 1200 -3' None FAU.ING24 i. CASING SIZE N/A OTHER: 4 1/4" HSA

EPT CASING SAMPFLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) fIb.l) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification

S-1 24/12 2.0 -4.0 4-5- 1.4 Moist light brown and brown, 5-6 f-m sand and gravel FILL, trace 5 S-2 24/8 4.0 -6.0 5-19- ND Ash and Brick - FILL - 25-10 Wet, dark brown, black, f-c sand S-3 24/8 6.0 - 8.0 4-2- ND and gravel FILL, trace 1-1 Ash and Brick S-4 24/8 8.0- 10.0 2-5- ND Same as S-2 10 6-6 Same asS-3 E B @ 1 EOB @ 10'

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOW'S"FT DENSITY BLOWS/FT DENSITY Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V.DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION LUES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSitiONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDmTIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL--OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MA1DE. BORING No. 273-B02

G:\SL TOtERA-Coaeti Cet4.OOSsp 27-2.3.4 eaby.xis]CST-B11 PROJECT REPORT OF BORING No. 274-801 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/24/99 DATE END 2/24/99

SAMPLER: ut.ss oenm NOTE.snat co s F2 sPur spooN GROUNDWATER READINGS DEN uSN A 140 NM ER FALI SoNGa DATE TIME WATERAT CASINGAT STABILIZATION TIME CASING: untss orERWse worn. cja.e anivznusiwo o .jaws 2/24 - - - None FALLJNG 24 i4o CASING SIZE N/A OTHER: 4 1/4" HSA EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (01:1) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification S-1 5/0 0.0 - 0.4 100-5" - SOIL and COBBLESTONES (1) - COBBLESTONES- 0.4 S-2 24/16 1.0 - 3.0 4-7- Brown and black, f-c sand and 11-4 gravel FILL, little Brick and Ash - FILL - S-3 6/0 3.0-3.5 48-100/1" - No Recovery 5 (2) EOB @ 3.5'

10_

-20

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS.FT DENSITY BLOWS/FT DENSITY (1) Refusal @ 5"- cobblestones (jackhammered) 0-4 V. LOOSE 0-2 V. SOFT (2) Refusal @ 3.5' 4-10 LOOSE 2-4 SOFT Well was not installed in this boring. 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF >30 HARD NOTES: I) THE STRATIFCATION 'NES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSITCNS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATE ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL. OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASWUREMENTS ARE ADS.

BORING No. 274-Bl0 G:OSUTTONtSAA-Ca s,s CetstogsI p 27-2.3,4+rnearbys]CST-B 11 PROJECT REPORT OF BORING No. 274-Bl0 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/24/99 DATE END 2/24/99

SAMPLER: unuss oTs O .,saWLERCONSISs or 2 s r sPooN GROUNDWATER READINGS DRi tUaUmA,4ol.MARfluNGaoi DATE TIME WATERAT CASINGAT STABILIZATION TIME CASING: ura sowsworc nus~notSa j.ua 2/24 0950 -4.5' - None

FALING 24 Me. CASING SIZE N/A OTHER: 4 1/4" HSA

DEPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (Ibm) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification SOIL and COBBLESTONES (1) - COBBLESTONES -1.0 S-1 - 1.0 -3.0 - - (2)

5 S-2 24/2 4.0 -6.0 27-12- 1.0 Brown, gray, and orange, f-c (3) - FILL - 3-3 sand and gravel FILL S-3 24/6 6.0 - 8.0 3-3- 1.0 Wet, brown and gray, f-c sand 3-3 FILL, trace Brick 8.0 S-4 24/8 8.0 -10.0 2-1- 1.4 Wet, gray and brown, f-m SAND, 10 3-4 SILT, and CLAY -SAND, SILT, and CLAY- S-5 24/22 10.0-12.0 1-1- ND Wet, gray, f-m SAND, SILT, and 11.0 2-2 CLAY, trace Shells (Bottom 10" - SILT and CLAY - is Silt and Clay) (4) EOB @12.5' 15

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOv. s FT DENSITY BLOWS/FT DENSITY (1) Jackhammered through top 1 foot of fill and cobblestones. 0-4 V. LOOSE 0-2 V. SOFT (2) Samples collected from previous boring attempt 4-10 LOOSE 2-4 SOFT (3) Low recovery: S-2 sample composited with S-3 for lab analysis. 10-30 M. DENSE 4-8 M. STIFF (4) Instructed drillers to auger to 12.5' to set well. 30-50 DENSE 8-15 STIFF Well 274-WO1 was installed in this boring. > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: I1)THE STRATIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSITIONS MAY BE GRADUAL 2) WATER LEVE-L READIN3S HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MADE. BORING No. 274-B01

G . TO'SAA-Co rton CrerULaslM[g 27-2.3.4.nearyxICST-B I GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA-BCEC 98121.A MONITORING WELL NO. LOCATION SAK Recycling - AG 27 274-WO1 CLIENT BRA ELEVATION CONTRACTOR Earth Exploration DRILLER T. Tucker TOP OF PVC OBSERVED BY Chris McDermott DATE 2/24/99 DEPTH TO GROUNDWATER FROM CHECKED BY DATE TOP OF PVC

GROUND <- LENGTH OF CASING ABOVE GROUND SURFACE 0.5 ft. ELEVATION <- LENGTH OF RISER PIPE ABOVE 3ft. GENERAL SOIL CONDITIONS GROUND SURFACE (NOT TO SCALE) THICKNESS OF SURFACE SEAL(S) 0.5 ft. TYPE OF SURFACE SEAL(S) cement

TYPE OF SURFACE CASING cast iron stickup <- ID OF SURFACE CASING 4 in.

<- DEPTH BOTTOM OF CASING 1 ft.

ID OF RISER PIPE 2.0 in. TYPE OF RISER PIPE Schedule 40 PVC

- - TYPE OF BACKFILL AROUND RISER PIPE

DEPTH TOP OF SEAL 1.0 ft. <------TYPE OF SEAL Bentonite Chips DEPTH BOTTOM OF SEAL/TOP OF 1.5 ft. SAND COLUMN <------DEPTH TOP OF SCREEN 2ft

TYPE OF SCREEN Schedule 40 PVC SIZE OPENINGS 0.010 in. ID OF SCREEN 2.0 in.

<------TYPE OF BACKFILL AROUND SCREEN #1 Sand

DEPTH BOTTOM OF SCREEN 12 ft.

<- DEPTH BOTTOM OF SAND COLUMN 12.5 ft.

- TYPE OF BACKFILL BELOW SCREEN #1 Sand

<--- DIAMETER OF BOREHOLE 8.0 in. <----- DEPTH BOTTOM OF BOREHOLE 12.5 ft.

NOTES: MONITORING WELL NO. See boring log 274-801 274-W01 WESTON & SAMPSON ENGINEERS, INC.

G:\SUTTO RAaona n C t Jr.ogs\[gp 27-2.3.4+nea rty.xls]CST-B I PROJECT REPORT OF BORING No. 274-802 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/24/99 DATE END 2/24/99

SAMPLER: unssornwisaNOTs. S.z coNssTsOr z spurspoo GROUNDWATER READINGS DtRENUsInAolb.HAERtA.uOto DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: ut..ssoreswsa 'noo.sc Nvnust oome aanu 224 1145 -4' - None FALONG 24 i CASING SIZE WNA OTHER: 4 1/4" HSA EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUMSTRATUM DESCRIPTIONDESCRIPON (feet) (Ibtft) No. PENIREC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification S-1 24/20 0.0 - 2.0 19-7- 1.8 Brown and black, f-c sand and - FILL - 18-27 gravel FILL, trace Brick and Ash 2.0 S-2 1/0 2.0-4.0 100/1" - No Recovery (1) -WOOD- 4.0 5 S-3 24/2 4.0 - 6.0 2-2- 8.4 Wet, brown to black, f-c sand (2) - FILL - 7-8 and gravel FILL 6.0 S-4 24/12 6.0- 8.0 3-2- 2.1 Wet, black and gray, SILT and 2-2 CLAY, trace sand FILL on top S-5 24/12 8.0 - 10.0 1/12" 1.8 Wet, black and gray, SILT and 10 1-2 CLAY -SILT and CLAY - S-6 24/18 10.0 - 12.0 2-3- 1.4 Wet black and gray, SILT and 2-2 CLAY, trace Shells

...... | ... @ .... (3) EOB @ 12.5' 15

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWS.T DENSITY (1) Refusal @ ~2 ft. Driller to auger through object (railroad tie). 0-4 V. LOOSE 0-2 V. SOFT (2) Creosote odor low recovery. S-3 sample composited with S-4 4-10 LOOSE 2-4 SOFT for lab analysis. 10-30 M. DENSE 4-8 M. STIFF (3) Instructed driller to auger to 12.5' to set well. 30-50 DENSE 8-15 STFF Well 274-W02 was installed in this boring. > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRAIFICATION ULINESRFRSENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRkA~SIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE SEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDOMTIONSS-ATE=D CN THIS BORING LOG. FLUCTUATIONS IN THE LEVEL COFGROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PESENT AT THE TIME M EASUREMENTSARE MAc0= BORING No. 274-802 G.LSUTTC t C-rerl,t scosD 27-2.34+nearty.xts]CST-B 11 GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAMEINO. BRA-BCEC 98121.A MONITORING WELL NO. LOCATION SAK Recycling - AG 27 274-W02 CLIENT BRA ELEVATION CONTRACTOR Earth Exploration DRILLER T. Tucker TOP OF PVC OBSERVED BY Chris McDermott DATE 2/24/99 DEPTH TO GROUNDWATER FROM CHECKED BY DATE TOP OF PVC

GROUND - LENGTH OF CASING ABOVE GROUND SURFACE 0.5 fL 3 ft ELEVATION - LENGTH OF RISER PIPE ABOVE GENERAL SOIL CONDITIONS GROUND SURFACE (NOT TO SCALE) THICKNESS OF SURFACE SEAL(S) 0.5 ft <- TYPE OF SURFACE SEAL(S) cement

TYPE OF SURFACE CASING cast iron stickup <------ID OF SURFACE CASING 4 in.

<------DEPTH BOTTOM OF CASING I ft.

ID OF RISER PIPE 2.0 in. <--- TYPE OF RISER PIPE Schedule 40 PVC

<- TYPE OF BACKFILL AROUND RISER PIPE #1 Sand

DEPTH TOP OF SEAL 1.0 ft. <-----TYPE OF SEAL Bentonite Chips DEPTH BOTTOM OF SEAIJTOP OF 1.5 ft SAND COLUMN

- DEPTH TOP OF SCREEN 2ft.

TYPE OF SCREEN Schedule 40 PVC <----- SIZE OPENINGS 0.010 in. ID OF SCREEN 2.0 in.

<----- TYPE OF BACKFILL AROUND SCREEN #1 Sand

<----- DEPTH BOTTOM OF SCREEN 12 ft.

<- DEPTH BOTTOM OF SAND COLUMN 12.5 ft.

<- TYPE OF BACKFILL BELOW SCREEN #1 Sand

<-----. DIAMETER OF BOREHOLE 8.0 in. <- DEPTH BOTTOM OF BOREHOLE 12.5 ft

NOTES: MONITORING WELL NO. See boring log 274-802 274-W02 0 WESTON & SAMPSON ENGINEERS, INC.

G: \S rTON.= eo n Cente~togsip 27-2,3.4+neay. sCST-3 11 PROJECT REPORT OF BORING No. 274-803 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tm Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/24199 DATE END 224/99 o N N SAMPLER: uless orwERwisE NoEs.r r co as o s pr sco GROUNDWATER READINGS DmvNuinSAr14.MAuFALL N3o DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: UNLESSOT-Ese nor C nve UsNG slSm .MMER 2/24 1300 -4' - None FALUNG 24 . CASING SIZE N/A OTHER: 4 1/4" H-ISA EPT CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (IbM) No. PENIREC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification

S-1 24/10 2.0-4.0 8-19- 4.2 Brown, gray, f-c sand and gravel -FILL- 17-24 FILL, little Brick and Ash 5 S-2 24/14 4.0- 6.0 8-6- 3.8 Moist, Brown, black, gray, f-c 5-5 sand FILL, little f-m Gravel, 6.0 S-3 24/6 6.0- 8.0 7-5- ND trace Silt 5-4 Wet, black and gray, SILT and - SILT and CLAY - CLAY 10 EOB @ 8.0'

35] GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT I DENSITY BLOWS/F DENSITY~ Well was not installed in this boring. 0-4 V. LOOSE 0-2 V. SOFT 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 7) THE STRATIFICATION UNES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSMTIONS .MAYBE GRADUAL 2) WATER LEVEL READINGS r,VE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONOMONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LE .EL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MA='E

SBORING No. 274-803 GA:1SUrTo B -.cA-rao-~ ~Cer$erOesip 27-2.3.4neafby.xs]CST-B11t PROJECT REPORT OF BORiNG No. 274-804 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/24/99 DATE END 2/24/99 SAMPLER: Ua.ess onsw sa No, s aeR co.sis oS-s spoo GROUNDWATER READINGS DorNUSINGA 14o0 uER FAtuNG ..- ~DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: unFss o w.c snoo.suSvn w k uE 2/24 1400 -4.5' - None FALUNG 24 in CASING SIZE N/A OTHER: 4 1/4" HSA

EPT CASING SAMPLE PID SAMPLE DESCRIPTION NCTE STRATUM DESCRIPTION (feet) (1/TI) No. PEN/REC (On) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification S-1 24/12 0.0 - 2.0 14-8- 1.2 Black and brown, f-c sand and 13-15 gravel FILL, little Brick, Ash, S-2 24114 2.0 - 4.0 27-20 1.6 - and Cobbles 18-15 Same as S-1 -FILL - 5 S-3 24/3 4.0 -6.0 33-22 2.4 Moist, black and brown, f-c sand 13-15 and gravel FILL S-4 24/16 6.0- 8.0 4-8- 2.4 Wet, black and gray, f-c sand (1) 7.0 15-20 FILL; Bottom 8": SAND, SILT S-5 24/18 8.0 - 10.0 4-6- 2.1 -,and CLAY 10 8-12 Wet, black and gray SAND, - SAND. SILT, and CLAY - SILT and CLAY, trace Shells ...... EOB @ 10

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS-FT DENSITY BLOWS/FT DENSITY (1) 3" split spoon used to collect sample due to chronic low recovery 0-4 V. LOOSE 0-2 V. SOFT with 2" spoon. 4-10 LOOSE 2-4 SOFT Well was not installed in this boring. 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V.DENSE 15-30 V. STIFF >30 HARD NcTES: 1) THE STRATIFICAnON LINES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANS-,ONS MAY BE GRADUAL. 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE ORILL HOLES AT TIMES AND UNDER CONDmTONS STA ED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE -- ESENT AT THE TIME MEASU REMENTS ARE MA -ZDRING No. 274-B04 GASUTT OsAn Cnterogs4gp 27.2,3,4+.artyJS]CST-B11 PROJECT REPORT OF BORING No. 274-B05 Weston & Sampson BRA-BCEC SHEET 1 OF I ENGINEERS, INC. Project No 98121.A CHKD BY

BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 2/25/99 DATE END 2/25/99

SAMPLER: uscssocsvsNOrm.s.saco.sstsr 2sarrsPoon GROUNDWATER READINGS ~DrvuN G u.ssonAson.MuV 3DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: u.sso MS NOTE. CS.c OmVEN US o b.HMMER 2/25 0920 -3.5 - None FALjNG 24 r. CASING SIZE NIA OTHER: 4 1/4" HSA

EPT CASING SAMIPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (Iblft) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification (1)

- FILL - brown and black, f-c 5 S-1 24/14 4.0- 6.0 6-7- 4.1 Wet, 12-14 SAND, Gravel, Silt trace Brick S-2 24/6 6.0 - 8.0 5-6- 2.2 Wet, brown, f-c sand FILL, little 7.0 6-4 Silt and Clay S-3 24/8 8.0- 10.0 2-3- ND Wet brown and gray, f-m - SAND, SILT, and CLAY - 10 4-4 SAND, SILT, and CLAY EOB @ 10'

351 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS.T DENSITY BLOWS/F' DENSiTY (1) Stratum observed from auger cuttings. 0-4 V. LOOSE 0-2 V. SOFT Well was not installed in this boring. 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION UNES REPRESENT THE APPROXIMATE BOUNDARY BETVEEN SOIL TYPES TRANSMTONS *MAYBE GRADUAL 2) WATER LEVEL READINGS HA .'/EBEEN MADE INTHE DRILL HOLES AT TIMES AND UNDER CONDrnDNS STAT.ED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVE_ OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESEN AT THE TIME MEASURE4MENTS ARE MA OE BORING No. 274-E05

G:sirr SRA-ra'eton CaeraIosta 27.2.3.4neaby- xICST-l t PROJECT REPORT OF BORING No. 274-B06 Weston & Sampson BRA-BCEC SHEET 1 OF 2 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika Willis DATE START 2/26/99 DATE END 2/26/99

SAMPLER UN.ESS CT'ws NO1ED AU-..R CONSISTS OF 2 sPur PooN GROUNDWATER READINGS ORNusNGAIo HAueRFA:.Cin. DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: unesso, w Sa or.cAsC DRWuNUSINGe a ,cR 2/26 0900 6' - None FALUNG24 it CASING SIZE N/A OTHER: 41/4" HSA

DEPT CASING SA.P.LE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (It') No. PEN/REC (in) DEPTh. (ft) BLOWS/6" (ppm) Burmister Classification COBBLES at 6" (1) - FILL -

4.0 5 S-1 24/18 4.0 - 6.0 6-7- ND Top 2": Wet, black fine SAND, 6-6 gray and black SILT and CLAY, S-2 24/14 6.0- 8.0 5-4- ND some interbedded Shells 3-3 and fine Sand. S-3 24/20 8.0 - 10.0 1-1- ND Gray to black SILT and 10 1-2 CLAY, some interbedded S-4 24/12 10.0 - 12.0 23-5- ND f-c Sand lenses (1-2"), - SAND, SILT and CLAY - 5-4 trace Peat and Wood ...... fragments .

15 S-5 24/0 15.0- 17.0 2-2- - No Recovery - empty spoon 4-4 S-6 24/13 17.0- 19.0 4-5- - No Recovery - empty spoon 5-3 20 19.5 S-7 24/24 20.0- 22.0 1-1- ND Gray, medium dense CLAY and (2) 1-2 SILT, some interbedded Shells.

- SILT and CLAY - 25 S-8 24/23 25.0 - 27.0 WOR124" 16 Gray, medium dense CLAY and (3) SILT, some interbedded Shells, Wood pulp at tip 28.5 30 S-9 24/15 30.0 - 32.0 6-8- ND Light gray, fine SAND, some 12-18 Silt and Clay -SAND-

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS,.T DENSITY BLOWVS/FT DENSITY (1) Cobbles encountered approx. 6" below ground. 0-4 V. LOOSE 0-2 V. SOFT (2) Egg-like odor 4-10 LOOSE 2-4 SOFT (3) Strong egg-like odor 10-30 M. DENSE 4-8 M. STIFF Well was not installed in this boring. 30-50 DENSE 8-15 STIFF WOR - Weight of rods drove the spoon (no hammer blows). > 50 V. DENSE 15-30 V. STIFF I> 30 HARD NOTES: 1) THE STRATIZATION USSRm ESENTTHEAPRXIMATE BouNARY BEThEENSOILTYPES ,-wnSeClNS MAYBEGRADUAL. 2) WATER LEVEL READINGS HA.=- BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STAE- ON THIS BORING LOG. FLUCTUATIONS IN THE VLE_.OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRE SENT AT THE TIME MEASURE)AENTrS ARE M'A E BORING No. 274-806

G:\SU~t.ON'SAA nCean sflp 27.2.3.4+nearthalCST-11 PROJECT REPORT OF BORING No. 274-B06

Weston & Sampson BRA-BCEC SHEET 2 OF 2 ENGINEERS, INC. Project No 98121.A CHKD BY BORING Co. Earth Exploration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika Willis DATE START 2/26/99 DATE END 2/26/99

SAMPLER: uNsss DTrW.SE NOTED.SOF-- CONSrS SPr SPOON GROUNDWATER READINGS OR' nUS4GA'otHnumannu4onG3 DATE TIME WATERAT CASINGAT STABILIZATIONTIME CASING: onaisaw scs on Sus o .ae 2ss2/26 0900 -6' - None FALNG 24 ki. CASING SIZE N/A OTHER: 4 1/4" HSA

EPT CASING SAMPLE PID SAMPLE DESCRIPTION NO..TEOTE STRATUM DESCRIPTION (feet) (blt) No. PENTREC (in) DE -rH (ft) BLOWS/6" (ppm) Burmister Classification S-10 24/11 35.0 - 36.3 39-78- ND Light brown, dense, f-m SAND, 100/3" some poorly sorted fine Gravel

40 S-11 24/17 40.0 - 42.0 22-25- ND Same as S-10 -TILL - 22-24

45 S-12 24/22 45.0-47.0 20-24- ND SameasS-10 40-27 ...... EO B @ .47.0' 50O

55-

70 GRANULAR SOILS COHESIVE SOILS REMARKS: SLOWST DENSITY BLO.S/FT DENSITY (1) Cobbles encountered approx. 6" below ground. 0-4 V. LOOSE 0-2 V. SOFT (2) Egg-like odor 4-10 LOOSE 2-4 SOFT (3) Strong egg-like odor 10-30 M. DENSE 4-8 M. STIFF Well was not installed in this boring. 30-50 DENSE 8-15 STIFF WOR - Weight of rods drove the spoon (no hammer blows). > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES 1) THE STRATIFICATION LNES .LEPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRAN,s NS MAY BE GRADUAL 2 ) WATER LEVE READINGS H-.V BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATE=DON THIS BORING LOG. FLUCTUATIONS IN THE '.= OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE FR=SENT AT THE TIME MEASUREMENTS ARE .AE BORING No. 274-BO6

G:150ClO lSfc.Caun CetaItoags[D 27-23.4+neatys]CST-B1l PROJECT REPORT OF BORING No. 274-B07 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A 0 CHKD BY BORING Co. Earth Exoloration BORING LOCATION Appraisal Group 27 FOREMAN Tim Tucker GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Chris McDermott DATE START 3/1/99 DATE END 3/1/99

SAMPLER: utass rows sjorn. su-auncoussrs oF 2 pspon GROUNDWATER READINGS DRIvENUsNGA1401-IAuERFALuNG3o. DATE TIME WATERAT CASINGAT STABILIZATIONTiME MER CASING: uNLESS onEsSENOTED. c.s DRIVENUSN t. 3/1 1000 ~3' - None FALING 24 s. CASING SIZE N/A OTHER: 4 1/4" HSA

PT CASING SAJ.PLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) ( ,) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification COBBLESTONES - COBBLESTONES -

S-1 24/8 2.0 - 4.0 7-13- 31.1 Moist, black, gray, brown, f-c (1) 56-8 sand FILL, little Clay - FILL - 5 S-2 24/6 4.0- 6.0 8-32- 28.8 Wet, black and brown, f-c sand (2) 5-4 sand and gravel FILL S-3 24/10 6.0 - 8.0 2-4- 12.1 Saturated, greenish SILT and (3) 7.0 3-3 CLAY, little f-c sand FILL @ top 6" -SILT and CLAY - 10 EOB @ 10'

25_

35 GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS-T DENSITY BLOWS/FT DENSITY (1) Strong petroleum odor - VOC sample collected at this depth. 0-4 V. LOOSE 0-2 V. SOFT (2) Strong petroleum odor. 4-10 LOOSE 2-4 SOFT (3) Top 6" smells strongly of petroleum; bottom of silt and dclay 10-30 M. DENSE 4-8 M. STIFF portion has no odor. 30-53 DENSE 8-15 STIFF Well was not installed in this boring. > 50 V. DENSE 15-30 V. STFF > 30 HARD NTES: 1) THE STRATIFICATION U. NES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANS:TIONS M-Y BE GRADUAL 2) WA R L- L READINGS P.AVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CON= MONS STATEn ON THIS BORING LOG. FLUCTUATIONS IN THE LE_- OF GROUND'';ATER MAY OCCUR DUE TO OTHER FACTORS TH,. THOSE PRESEN" AT THE TIME

MEASUJREMENTS ARE Me BORING No. 274-B07

G\StrrctOaaAer Zterouslgp 27-23.4+neaby.lS]CST-BlI PROJECT - REPORT OF BORING No. 221-B02 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert, Inc. BORING LOCATION Appraisal Group 22-1 FOREMAN Donny Rosinha GROUND SURFACE ELEV. - DATUM WSE GEOLOGIST: Annika M. Willis DATE START 8/25/98 DATE END 8/25/98 SAMPLER unnss onwisao.sAus. con.ss-rs SPooN GROUNDWATER READINGS DRVE USNG A 40 HAER FALING 3s DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: uess o-EwIse o'rs.cas-s oN Nso o.Mnues 8/26 1415 4.85' Upon completion FA.JG 24 K. CASING SIZE: OTHER: 4 1/4" HSA

DEPTH ASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) fit) No. PEN/REC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification -ASPHALT- 1.0

S-1 24/15 1.5 - 3.5 15-55- 1.3 Moist dark gray, f-c Sand FILL, - FILL - 57-37 some f-c Gravel 5 S-2 24/0 4.0 -6.0 5-7- - No recovery (1) 5.0 5-5 S-3 24/15 6.0 -8.0 4-3- 0.0 Saturated, greenish-gray. SILT - SILT and SAND - S3-3 some Clay S-3 24/18 8.0 -10.0 3-3- 0.0 8-9': Greenish-gray, SILT and SAND 9.0 10 2-3 9-9.5': Greenish-gray, CLAY S-4 24/12 10.0- 12.0 1-1 0.0 Saturated, greenish-gray, CLAY - CLAY -

15 15.0 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS T DENSITY BLOwVSIFT DENSITY (1) Cobble lodged in split spoon 0-4 V. LOOSE 0-2 V. SOFT Well 221-W02 was installed in this boring 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES. 1) THE STRTIFICATIoN INES REPRSENT THE APPROXIMATE BOUNDARY BSET N SOIL TYPES TRA SMiONS MAY BE GRADUAL. 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDT ONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LE. . OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN 1-+S- PRESENT AT THE TIME MEASUREMENTS ARE MA.- BORING No. 221-B02

G SkLsTT ACn." r CaetgsIgp 27-2.3.4+neartyt]CST81 I GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA- BCEC 98121.A MONITORING WELL NO. LOCATION Appraisal Group 22 (Perini) 221-W02 CLIENT BRA ELEVATION CONTRACTOR Zoino-Hebert DRILLER D. Rosinha TOP OF PVC OBSERVED BY Annika Willis DATE 8/25/98 DEPTH TO GROUNDWATER FROM CHECKED BY Bill Cook DATE 8/27/98 TOP OF PVC

GROUND ELEVATION '<- FLUSH-MOUNTED ROADBOX (GROUND SURFACE) GENERAL SOIL CONDITIONS (NOT TO SCALE) THICKNESS OF SURFACE SEAL(S) 0.5' <- TYPE OF SURFACE SEAL(S) cement

TYPE OF SURFACE CASING cast steel road box <- ID OF SURFACE CASING 3.5"

<- DEPTH BOTTOM OF CASING 10.0"

ID OF RISER PIPE 2.0" <- TYPE OF RISER PIPE Schedule 40 PVC

<--- TYPE OF BACKFILL AROUND RISER PIPE #1 Sand

DEPTH TOP OF SEAL 1.7' <-----TYPE OF SEAL Bentonite chips DEPTH BOTTOM OF SEALITOP OF SAND COLUM 3.0'

- DEPTH TOP OF SCREEN 5.0'

TYPE OF SCREEN Schedule 40 PVC <- SIZE OPENINGS 0.010" ID OF SCREEN 2.0'

<- TYPE OF BACKFILL AROUND SCREEN #1 Sand

<- DEPTH BOTTOM OF SCREEN 15.0'

<- DEPTH BOTTOM OF SAND COLUMN 15.0'

<- TYPE OF BACKFILL BELOW SCREEN #1 Sand

<- DIAMETER OF BOREHOLE 8.0" <- DEPTH BOTTOM OF BOREHOLE 15.0'

NOTES: MONITORING WELL NO. 221-W02 Refer to boring log 221-B02 WESTON & SAMPSON ENGINEERS, INC.

G:\SUT, ' RA-Convna CenterLogs(gp 27-2,3.4neeayxIs]CST-811 PROJECT REPORT OF BORING No. 221-808 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Cc. Zoino-Hebect, Inc. BORING LOCATION AoDpraisal Group 22 FOREMAN Donny Rosinha GROUND SURFACE ELEV. - DATUM WSE GEOLOGIST: Annika M. Willis DATE START 8/27/98 DATE END 8/27/98

SAMPLER: u.sssorw ~om sa consSTSoCrseursPoon GROUNDWATER READINGS DRNvENusC A o h IAMuER FA.NGnic DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: unsss oneSs norm. cascoe n usn a t- s 8/27 1000 3.5' (2) FAUNG 24 ar CASING SIZE: OTHER: 4 1/4" HSA DEPTH CASING SAMPLE PID SAMPLE DESCRIPTION MOTET STRATUM DESCRIPTION ffeet) (Ibf) No. PENREC (in) DEPTH (ft) BLOWS/6 (ppm) Burmister Classification - ASPHALT - 0.5 S-1 24/12 0.5 - 2.5 30-41- 736 Moist, Coal, Brick and dark (1) 15-15 _ brown, fine Sand FILL, some fine Gravel 5 S-2 24/10 4.0 - 6.0 4-5- 2000 Saturated, same as S-1 (1) - FILL - 11-7

7.5

10 S-3 24118 9.0 - 11.0 1-1- 15 Saturated, olive-gray, SILT, very 1-1 fine SAND and interbedded CLAY, Shells - SILT, SAND, and CLAY -

15 S-4 2418 14.0-16.0 1-1- 142 Same as S-3 7-17 16.0 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWSFT DENSITY BLOWS/FT DENSITY (1) Petroleum odor; no sheen 0-4 V. LOOSE 0-2 V. SOFT (2) Depth to water was inferred from visible evidence in S-2 4-10 LOOSE 2-4 SOFT Well was not installed in this boring 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF >30 HARD N rS: ) THE STRATIZ ATION UNES REPRESENT THE APPROXIMATE BOUJNDARY BETWEEN SOIL TYPES. TRANS-tONS MAY BE GRADUAL 2 , WATER ILEVa READINGS HAVE SBEENMADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STA D ON THIS BORING LOG. FLUCTIJATICS IN THE LEVE. OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE SNT AT THE TIME MEASURSMENTS ARE MADE BORING NO. 221-808

G:,sUTtOwa.RA-c,.ec Ce treroas[p 27.2.3A.4+neartM.ICST-11 PROJECT REPORT OF BORING No. 221-B09 Weston & Sampson BA-1CEC SHEET OF 1 ENGINEERS, INC. Projeca No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert. Inc. BORING LOCATION Appraisal Group 22 FOREMAN Donny Rosinha GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika M. Willis DATE START 8/27/98 DATE END 8/27/98

SAMPLER: unssors 'or~. suacoers s rsPUsn N GROUNDWATER READINGS cDvUSINGAl4o u FAU.ING 3ok DATE TIME WATER,AT CASING AT STABILIZATIONTIME CASING: Ess o~sa o cAso n us o . ue 8/27 1230 3.0' (2) FALING 24 a CASING SIZE: OTHER: 4 1/4" HSA = DEPTH CASING SAMPL.E . PID SAMPLE DESCRIPTION NO,-5NOE STRATUM DESCRIPTION (feet) (hb/ft) NO. PEN/REC (in) DEPTH (If) BLOWS/6" (ppmrn) Burmister Classification -ASPHALT- 0.5 S-1 24/1 0.5- 2.5 34-24- 0.0 Moist, dark gray. f-m Sand FILL, 19-24 some coarse Gravel; 2.5': Cobblestone - FILL - 5 S-2 24/2 4.0- 6.0 34-24- 0.0 Saturated, same as S-1 15-8 7.0

S-3 24/4 8.0 -10.0 5-2- 0.0 Saturated, greenish-gray, SILT, 10 2-4 very fine SAND and CLAY S-4 24/2 10.0 -12.0 1-2- 0.0 Same as S-3 - SILT, SAND, and CLAY - 2-2 S-5 24/0 12.0-14.0 Pushed NA No Recovery .... (1.) .. 14.0 15 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS.FT DENSITY BLOWS/FT DENSITY (1) Probably pushing cobble into clay 0-4 V. LOOSE 0-2 V. SOFT (2) Depth to water inferred from visible evidence of soil moisture 4-10 LOOSE 2-4 SOFT Well was not installed in this boring 10-30 M. DENSE 4-8 M. STIFF Drilled to 2.5'; hit steel? Moved hole 5'north and drilled to 14.0' 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD N TES: 1)THE STRATIFICATION UNES REPRESENT THE APPROXIMATE BOUNDARY BETWE EN SOIL TYPES =,ANSCTINS MAYBE GRADUAL 2: WATER LEVEL READINGS H~AVEBEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITICNS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL. OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN Th-OSE PREENT AT THE TIME MEASUREMENTS ARE MAAE 5BORING NO. 221-BO9

G:\SUTTOP BR ACo,~rr on CereriLogsgp 27.2,3.4nearty.is]C5T.B11 PROJECT REPORT OF BORING No. 221-B10 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert, Inc. BORING LOCATION Appraisal Group 22 FOREMAN Donny Rosinha GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika M. Willis DATE START 8/27/98 DATE END 8/27/98

SAMPLER: .fSsormERwSE c sSa R CO@IStSTar spsur speco GROUNDWATER READINGS DvNUSINGA140,EFLUNG0 DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: usssomR a rnseuna..S uven USNo A AusR 8/27 1400 dry (1) FALUN 24 . CASING SIZE: OTHER: 4 1/4" HSA DEPTH CASING SAMP-E PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (Th) No. PEN/REC ('i) DEPTH (II) BLOWS/6" (ppm) Burmister Classification - ASPHALT- 0.5 S-1 24/15 0.5 -2.5 20-15 0.0 Dry, dark gray, f-m Sand and 12-7 f-c Gravel FILL - FILL-

5 5.0

- SILT and SAND - S-2 24/13 8.0 - 10.0 2-2- 0.0 Moist, greenish-gray, SILT and 10 2-2 very fine SAND, interbedded Clay lenses 10.0 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLO ws--r DENSITY BLOWS/FT DENSITY (1) Depth to water inferred from visible evidence of S-1 and S-2 0-4 V. LOOSE 0-2 V. SOFT Well was not installed in this boring 4-10 LOOSE 2-4 SOFT 10-30o M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION UNES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANs TIONS MAY BE GRADUAL. 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONrMONS STATED ON tIS BORING LOG FLUCTUATIONS IN TE LE 'EL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESEN AT THE TIME MEASUREMENTS ARE MA _ BORING No. 221-Bl0

G:'ScUTToafnlms r ton Cets..g.sl 27-2.3.4.neatre ]CS.B I PROJECT REPORT OF BORING NO. 221-Bll Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert, Inc. BORING LOCATION Appraisal Group 22 FOREMAN Donny Rosinha GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika M. Willis DATE START 8/28/98 DATE END 8/28/98 SAMPLER uEss OhESENO, SuLnCONSSTS c 2sf.rr SPOON GROUNDWATER READINGS DuN USNGA 1t40 aMAuERWRNGLiDATE TIME WATERAT CASINGAT STABILIZATION TIME CASING: uW.ESSORnWSENOTED.CaovenUSmGasoonmbnER 8/28 0750 dry (1) FALLING 24 in. CASING SZE: OTHER: 4 1/4" HSA

DEPTH CASING SAMPLE PID SAMPLE DESCRIPTION NOTNOTE STRATUM DESCRIPTION (feet) (1IW) No. PEN/REC (in) DEP-TH (ft) BLO'WS6" (ppm) Burmister Classification - ASPHALT - 0.5 1' depth: Cobblestone

- FILL - 5 S-1 24/14 4.0 - 6.0 20-30- 0.0 Moist, dark gray, f-m Sand FILL, 15-10 some f-m Gravel 7.0

S-2 24/0 8.0- 10.0 2-2- NA No Recovery 10 2-2 - SILT and CLAY - S-3 24/4 10.0 - 12.0 2-3- 0.0 Wet greenish-gray, SILT, CLAY 4-4 12.0 .. ..- ...... EO B S 15

20_

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWVS/FT DENSITY (1) Depth to water inferred from visible evidence of S-1, S-2 & S-3 0-4 V. LOOSE 0-2 V. SOFT Well was not installed in this boring 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NO'ES: 1) THE STRATIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARY SETWEEN SOIL TYPES TMY.NSTONS MAY BE GRADUAL 2) WATER LEVEL READINGS -' AVE- BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE .E OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT TrHE TIME " MEASUREMENTS ARE MA- = BORING No. 221-B11

G:~SUTTON,RA-Conver~n Cerer.cogsp Z7.2,3,4+ear Is]CST-BlI PROJECT REPORT OF BORING No. 241-801 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert, Inc. BORING LOCATION Appraisal Group 24 FOREMAN Donny Rosinha GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika M. Willis DATE START 9/1/98 DATE END 9/1/98

SAMPLER: t-rss onenwsa .orsn. naco.s'srs e 2 spur soo GROUNDWATER READINGS DarEN USINGA 140 A Me FAu.ING30 DATE TIME WATERAT CASINGAT STABILIZATION TIME CASING: LnEasso .nEn NOs. CS. n vDf USING aMEn 9/1 1 000 7.0' (1) FAING 24 it CASING SIZE: OTHER: 4 1/4' HSA

DEPTH CASING SAMPLE .. PID SAMPLE DESCRIPT10N NOTE STRASTRATUM TU M DESCRIPTION (feet (lib/ft) No. PEN/REC (in) DEPTH (It) BLOWS/6" (ppm) Burmister Classification - ASPHALT- 0.5

- FILL - 5 S-1 24/22 4.0 - 6.0 3-5- 0.0 Moist, dark gray to rust, fine 6-4 Sand FILL, Brick, Wood, Button 7.0

S-2 24/18 8.0 - 10.0 3-3- 0.0 Saturated, greenish-gray, SILT 10 4-5 and CLAY - SILT AND CLAY -

S-3 24/13 14.0- 16.0 4-5- 0.0 Same as S-2 15 7-4 16.0 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWSFT DENSITY BLOWS/FT DENSnY (1) Depth to water inferred from visible evidence of moisture in S-1 0-4 V. LOOSE 0-2 V. SOFT and S-2 upon completion 4-10 LOOSE 2-4 SOFT Well was not installed in this boring 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF >50 V. DENSE 15-30 V. STIFF > 30 HARD N:TES: 1) THE STRAIFICATION UNS REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRAN ONS I.MAYBE GRADUAL 2) WATER LEVE=LREADINGS NAVE BEEN MADE IN THE DRILl. HOLES AT TIMES AND UNDER CONDTIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LEVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS TIHAN THCOSE-PRESENT AT THE TIME MEASUREMENTS ARE MAkD=E- BORiNG No. 241-801

GASLTO AcM Carerlt gsp 27-2.3.4nearb.xisCST8l I PROJECT REPORT OF BORING No. 261-801 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Dragin Drilling BORING LOCATION See attached plan FOREMAN Todd Collins GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Eowyn K. Driscoll DATE START 9/9/98 DATE END 9/9/98

SAMPLER' uNussohSy .nom.s.SAwnconrs o,r sprspoon GROUNDWATER READINGS DRIv siNG A 14o AuFAN~a DATE TIME WATERAT CASING AT STABILIZATION TIME CASING: uN9/ssoTw soTW.cAs ovTNUSINGn kco Run 919 1250 -6' - Upon completion FALUJING24 i. CASING SIZE: OTHER: 4 1/4" H-ISA

DEPTH CASING SAMPLE PID SAMPLE DESCRIPTION NCE STRATUM DESCRIPTION (feet) (Ibtf) No. PENREC (inrm)DEPTH (ft) BLOWS/6" (ppm) Burmister Classification S-1 (1) 0.0 -2.0 (1) (1) (1) -CONCRETE- - SAND - - BRICK - -CONCRETE - 5 S-2 24/6 4.0 -6.0 2-2- 0.0 Wet, very loose, dark brown, f-c 2-3 Sand and Gravel FILL, trace Clay, trace Ash

- SAND and GRAVEL 10 FILL - S-3 24/8 10.0 -12.0 1-1- 2.1 Wet, very loose, black-brown, f-c 1-1 Sand and Gravel FILL, some Clay . 14.0 15 S-4 24/20 14.0 - 16.0 1-1- 0.0 Wet, very loose, gray, f-c Sand 1-2 and Clay FILL, some Silt, trace - SAND and CLAY FILL - Smedium Gravel, trace Glass 16.0 EOB 20

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS!FT DENSITY BLOWS/FT DENSITY (1) Jackhammered through top 4';unable to retrieve a split-spoon 0-4 V. LOOSE 0-2 V. SOFT sample due to the presence of concrete 4-10 LOOSE 2-4 SOFT Well 261-W01 was installed in this boring 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATI-CATION UNES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. c M-ASrTCSY BE GRADUAL. 2) WATER LEVEL READINGS HAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STAT~ ON THIS BORING LOG. FLUCTUATIONS IN THE L"EVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN TCSE PRESENT AT THE TIME MEASUREMENTS ARE MADE BORING No. 261-801

G:'surrorr - c er±-Coeem 2aritgsiona.2,3.4.near.xXIlST.aII GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA- BCEC 98121.A MONITORING WELL NO. LOCATION Appraisal Group 26 261-W01 * CLIENT BRA ELEVATION CONTRACTOR Dragin Drilling DRILLER T. Collins TOP OF PVC OBSERVED BY Eowyn Driscoll DATE 9/4/98 DEPTH TO GROUNDWATER FROM CHECKED BY Bill Cook DATE 9/22/98 TOP OF PVC

GROUND ELEVATION <- FLUSH-MOUNTED ROADBOX (GROUND SURFACE) GENERAL SOIL CONDITIONS (NOT TO SCALE) I THICKNESS OF SURFACE SEAL(S) 6.0" <- TYPE OF SURFACE SEAL(S) concrete

TYPE OF SURFACE CASING cast aluminum road box <-I ID OF SURFACE CASING 4.25"

<- DEPTH BOTTOM OF CASING 10.0"

ID OF RISER PIPE 2.0" TYPE OF RISER PIPE Schedule 40 PVC

<---- TYPE OF BACKFILL AROUND RISER PIPE #1 Silica Sand

DEPTH TOP OF SEAL 1.0'

<- TYPE OF SEAL Bentonite chips DEPTH BOTTOM OF SEAL/TOP OF SAND COLUM 2.0'

<- DEPTH TOP OF SCREEN 3.0'

I TYPE OF SCREEN Schedule 40 PVC <-- SIZE OPENINGS 0.010" ID OF SCREEN 2.0"

<- TYPE OF BACKFILL AROUND SCREEN #1 Silica Sand

<----.- DEPTH BOTTOM OF SCREEN 13.0'

<- DEPTH BOTTOM OF SAND COLUMN 16.0'

C - TYPE OF BACKFILL BELOW SCREEN #1 Silica Sand

<- DIAMETER OF BOREHOLE 8.0' <- DEPTH BOTTOM OF BOREHOLE 16.0'

NOTES: MONITORING WELL NO. 261-W01 Refer to boring log 261-801 WESTON & SAMPSON ENGINEERS, INC.

G:SfUOtS S -onvebon Cente.togslgp 272.3,4*eaY.x]ST-B11 PROJECT REPORT OF BORING No. 261-602 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Dragin Drilling BORING LOCATION See attached plan FOREMAN Todd Collins GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Eowyn K. Driscoll DATE START 9/9/98 DATE END 9/9/98

SAMPLER- un. so s NOwas. aE coNS'srs ofr spur spooj GROUNDWATER READINGS ORvEN SG A Iso b. HIAuE FAuJG SO DATE TIME WATER AT CASING AT .STABILIZATION TIME CASING: onwse n.cnsms n t o u.ae 9ss99 1435 "6' - Upon completion FALLIG 24 i CASING SIZE: OTHER: 4 1/4" HSA

DEPTH CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (fet) (I 't) No. PEN/REC (in) DEPTH (ft) BLOWS/" (ppm) Burnnister Classification (1) (1) (1) (1) (1) -CONCRETE-

S-1 24/18 2.0 -4.0 5-3- 0.0 Dry, loose, black, f-c Sand FILL, 2-2 little medium Gravel, trace 5 Cinders, Glass and Ash - SAND FILL -

S-2 24/24 8.0 - 10.0 1-1- 0.0 Wet, loose, brown, f-c Sand and 9.0 10 1-1 gray Clay FILL, trace Wood S-3 24/24 10.0 -12.0 1-1- 5.1 Wet, very soft, gray, CLAY, 1-1 some f-c Sand, little f-c Gravel -CLAY -

14.0 15 S-4 24/24 14.0 -16.0 1-1- 1.8 Wet, very soft, gray, CLAY and (2) - CLAY and SILT - 1-1 SILT, little f-c Sand 16.0 EOB

20-

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWSsFT DENSITY BLOV.WSFT DENSITY (1) Jackhammered through top 2' 0-4 V. LOOSE 0-2 V. SOFT (2) Petroleum odor at 16' 4-10 LOOSE 2-4 SOFT Well 261-W02 was installed in this boring 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTE-S: I) THE STRATIFICATION UNES RN=RESENT THE APPROXIMATEBOUNDARY BETEN SOIL TYPES T-RANSTOS MAYBE GRADUAL 2) WATER LEVEL READINGS MAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONODIlONS STAT ON THIS BORING LOG. FLUCTUATIONS IN TrE LEVEL OF GROUNDWATER MAY OCCUR DUE TO OTHER FACTORS THAN ThOSE PRESENT AT THE TIME MEASUREMENTS ARE MAD.

SBCRJNG No. 261-802 G..suTTot~SAcoarace certrostlo 27.2.3.4*.eartyrxbicsT.Bi I GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA-BCEC 98121.A MONITORING WELL NO. LOCATION Appraisal Group 26 261-W02 CLIENT BRA ELEVATION CONTRACTOR Dragin Drilling DRILLER T. Collins TOP OF PVC OBSERVED BY Eowyn Driscoll DATE 9/9/98 DEPTH TO GROUNDWATER FROM CHECKED BY Bill Cook DATE 9/22/98 TOP OF PVC

GROUND ELEVATION <------FLUSH-MOUNTED ROADBOX (GROUND SURFACE) GENERAL SOIL CONDITIONS (NOT TO SCALE) STHICKNESS OF SURFACE SEAL(S) 6.0" - TYPE OF SURFACE SEAL(S) cement

TYPE OF SURFACE CASING cast aluminum road box <- ID OF SURFACE CASING 4.25"

<- DEPTH BOTTOM OF CASING 10.0"

ID OF RISER PIPE 2.0" <------TYPE OF RISER PIPE Schedule 40 PVC

<- TYPE OF BACKFILL AROUND RISER PIPE #1 Silica Sand

DEPTH TOP OF SEAL 1.0' <- TYPE OF SEAL Bentonite chips DEPTH BOTTOM OF SEAL/TOP OF SAND COLUM 2.0'

<- DEPTH TOP OF SCREEN 3.0'

TYPE OF SCREEN Schedule 40 PVC <--- SIZE OPENINGS 0.010" ID OF SCREEN 2.0"

<- TYPE OF BACKFILL AROUND SCREEN #1 Silica Sand

<- DEPTH BOTTOM OF SCREEN 13.0'

<- DEPTH BOTTOM OF SAND COLUMN 16.0'

<- TYPE OF BACKFILL BELOW SCREEN #1 Silica Sand

<- DIAMETER OF BOREHOLE 8.0" <- DEPTH BOTTOM OF BOREHOLE 16.0'

NOTES: MONITORING WELL NO. 261-W02 Refer to boring log 261-B02 WESTON & SAMPSON ENGINEERS, INC.

G u:'SrTNsA-Ce ton Center.Logsgp 27.2.3.4*nearby xtsJCST-B I PROJFCT REPORT OF BORING No. 261-B03

Weston & Sampson BRA-BCEC SHEET 1 OF I ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert, Inc. BORING LOCATION Appraisal Group 26 FOREMAN Donny Rosinha GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika M. Willis DATE START 9/1/98 DATE END 9/1/98

SAMPLER- umcsssoens Nors. s w. con Sr or spr spoon GROUNDWATER READINGS DvEN usG Aso lMSn FA:.uN 30 DATE TIME WATER AT CASINGAT STABILIZATION TIME CASING: Us ssorens o cornvsnus c0a mn 911 1130 8.0' (1) FLUNG 24 .t CASING SIZE _OTHER 41/4" HSA

DEPTH CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (I'ft) No. PEN/REC (in) DEPTH (t) BLOWSJ (ppm) Burmister Classification -ASPHALT- 0.4 S-1 24/15 1.0 - 3.0 15-15- 0.0 Moist, light brown, fine Sand 9-6 FILL, some fine Gravel. 1' depth: Cobbles 5 S-2 24/4 6.0 - 8.0 3-2- 0.0 Wet, dark brown to dark gray. -FILL - 2-2 f-c Sand FILL, Ash, Brick, some S-3 24/6 8.0- 10.0 Pushed 0.0 f-m Gravel 10_ by rig _ Saturated, same as S-2 10 10.0 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWVS/FT DENSITY (1) Water level inferred from visible soil moisture 0-4 V. LOOSE 0-2 V. SOFT Well was not installed in this boring 4-10 LOOSE 2-4 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION UNES RPRESENT THE APPRO xIMATE BOUNDARY BETVEEN SOILTYPES ,ANSITIONS MAY SE GRADUAL 2) WATER LEVL READINGS -- BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDOCTS STAED ON THI'S BORING LOG. FLUCTUATIONS IN THE LE.<. OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN "r-OSE PRE-SENT AT THE TIME MEASURE:E'NTS ARE LA2-- BORING No. 261-803

G:1SUT'^RS&A.C~ .e~tetogsMQD 27-2.34*nearyzICST811 PROJEC REPORT OF BORING No. 271-801 Weston & Sampson BRA-BCEC SHEET 1 OF ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert. Inc. BORING LOCATION Appraisal Group 27 FOREMAN Donny Rosinha GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika M. Willis DATE START 9/1/95 DATE END 9/1/98 SAMPLER: urnss or wnse NOrao. s esnconsisTs cF -sur spoom GROUNDWATER READINGS I:VENuseA 140b.SuMRFJING3ok DATE TIME WATEAT CASINGAT STABILIZATIONTIME CASING: l,.ESS o lewsE NOrTED.CASING DRIVENUS? st .RA Ee

FAWING 24 kL CASING SIZE: OTHER: 4 1/4" HSA

DEPTH CASING SAMP.E PID SAMPLE DESCRIPTION NOTE STRATUMSTRATM DESCRIPTION (feet) (b) No. PEN/REC (in) D=-TH (ft) BLOWS/6" (ppm) Burmnister Classification S-1 24/18 00 -2.0 5-5- 0.0 Moist, gray to dark brown, m-c - TOPSOIL - 7-9 Sand FILL, Brick and f-m Gravel

- FILL - S-2 24/4 8-0 -10.0 1-1- 0.0 Saturated, gray, ash-like matter, 10 1-1 f-c Sand FILL, some f-c Gravel

S-3 24/12 11.0 -13.0 2-3- 0.0 Same as S-2 1-4 13.0 15 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS/FT DENSITY BLOWSIFT DENSITY Well 271-WO1 was installed in this boring 0-4 V. LOOSE . 0-2 V. SOFT 4-10 LOOSE 24 SOFT 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1) THE STRATIFICATION I.!NE REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSTIONS MAY BE GRADUAL 2} WATER L-EVEL READINC-S -,AVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONCPIONS 5TATED ON THIS BORING LOG. FLUCTUATIONS IN THE -= EL OF GROUNOWATER MAY OCCUR DUE TO OTHER FACTORS THAN OSE PRESENT AT THE TIME MEASUREMENTS ARE MAL- BORING No. 271-Bl0

G.\Sb"OT GeALZnn~.rngstpZ7.3.4+naryzxCSTB11 GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA-BCEC 98121. MONITORING WELL NO. LOCATION Appraisal Group Number 27-1 271-W01 CLIENT BRA ELEVATION CONTRACTOR Zoino-Hebert DRILLER D. Rosinha TOP OF PVC OBSERVED BY Annika Willis DATE 9/1/98 DEPTH TO GROUNDWATER FROM CHECKED BY Bill Cook DATE 9/1/98 TOP OF PVC

GROUND ELEVATION <- FLUSH-MOUNTED ROADBOX (GROUND SURFACE) GENERAL SOIL CONDMONS (NOT TO SCALE) [ THICKNESS OF SURFACE SEAL(S) 0.5' - TYPE OF SURFACE SEAL(S) cement

TYPE OF SURFACE CASING cast steel road box - ID OF SURFACE CASING 3.5"

<- DEPTH BOTTOM OF CASING 10.0"

ID OF RISER PIPE 2.0" <- TYPE OF RISER PIPE Schedule 40 PVC

<- TYPE OF BACKFILL AROUND RISER PIPE #1 Sand

DEPTH TOP OF SEAL 0.5' <- TYPE OF SEAL Bentonite chips DEPTH BOTTOM OF SEAL/TOP OF SAND COLU M 1.0'

<- DEPTH TOP OF SCREEN 2.0'

TYPE OF SCREEN Schedule 40 PVC <----- SIZE OPENINGS 0.010" ID OF SCREEN 2.0"

- TYPE OF BACKFILL AROUND SCREEN #1 Sand

<- DEPTH BOTTOM OF SCREEN 12.0'

- DEPTH BOTTOM OF SAND COLUMN 12.0'

<----- TYPE OF BACKFILL BELOW SCREEN #1 Sand

<- DIAMETER OF BOREHOLE 8.0" <- DEPTH BOTTOM OF BOREHOLE 13.0'

NOTES: MONITORING WELL NO. O 271-W01 Refer to boring log 271-Bl0 WESTON & SAMPSON ENGINEERS, INC.

G SSUTTZ's* RA n on Center ogs(gp 27-2.3,4+neaty.xls]CST-B 11 PROJECT REPORT OF BORING No. 271-B02 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Zoino-Hebert, Inc. BORING LOCATION Appraisal Group 27 FOREMAN Donny Rosinha GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Annika M. Willis DATE START 9/1/98 DATE END 9/1/98 SAMPLER- uss o-n-a.s u.or . sSu consists Or2surspoon GROUNDWATER READINGS D A 14vENU0Am FAu MNG30 DATE TIME WATERAT CASINGAT STABILIZATION TIME CASING: uNUessone w mno.cacsivenusING t. Ran 9/1 8.0' Upon completion (1) FALLNG 24 i. CASING SIZE: OTHER: 41/4" HSA DEPTH CASING SAMPLE PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION (feet) (-/8) No. PENMREC (in) DEPTH (ft) BLOWS/6" (ppm) Burmister Classification - TOPSOIL- 0.5

5 S-1 24/22 4.0 -6.0 3-3- 0.0 Dry, dark gray, f-c Sand, Ash, 5-6 Wood, Brick FILL, and f-m Gravel - FILL -

10 S-2 24/18 10.0 - 12.0 1-1- 0.0 Saturated, Clay and Silt FILL, 1-1 interbedded with gray Ash, Silt and fine Gravel ... 13.0 S-3 24/14 14.0 - 16.0 1-2- 0.0 Saturated, greenish-gray CLAY 15 2-2 and SILT - CLAY and SILT - 16.0 EOB

S20

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS'-FT DENSITY BLOWS/FT DENSITY (1) Depth to water inferred from visible soil moisture in S-2 and S-3 0-4 V. LOOSE 0-2 V. SOFT upon completion 4-10 LOOSE 2-4 SOFT Well was not installed in this boring 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NCOTES: 1) THE STRATIFICATION UNES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSmONS MAY BE GRADUAL 2) WATER L-EVEL READINGS "AVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDTmONS ST ATED ON THIS BORING LOG. FLUCTUATiCSS IN THE L-E - OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN TH-..S PRESENT AT THE TIME MEASUREMrENTS ARE MA=- BORING No. 271-B02

G:'SUTTONtRA-Cnerton CetelngsMgp 27-2.3.4+nearyI)CST-B1I PROJECT REPORT OF BORING No. CST-B10 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Dragin Drilling BORING LOCATION See attached plan FOREMAN Todd Collins GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Eowyn K. Driscol DATE START 8128/98 DATE END 8/31/98 SAMPLER Unss oewsa noso. sa.- coNslss or 2 swr poon GROUNDWATER READINGS nViN UNG A 140t auF JNGo DATE TIME WATER AT CASING AT STABILIZATION TIME CASING: u&ssoReSNOTws A,.C.covENUSmGao0 AnuMER 8/31 0810 -4' - Upon completion FAtUNG 24 nf CASING SIZE OTHER: 4 1/4" HSA

DEPTH CASING SA.MPLE PID SAMPLE DESCRIPTON DESCRIPTIONNOTE STRATUMSTRATM DESCRIPTION (feet) (Ib) No. PEN/REC (in) DEP TrH (f) BLOWSW6" (ppm) Burmister Classification * Asphalt and Cobbles -ASPHALT -

S-1 " 2.0 -3.0 * 0.0 Dry, brown, f-c Sand and Cobble - SAND AND COBBLE FILL, little fine Gravel FILL - 5 6.0

S-2 24/6 8.0- 10.0 1-1- 0.0 Wet, very soft, black-green, 10 1-1 CLAY, trace coarse Sand, fine S-3 24/16 10.0-12.0 1-1- 0.0 Gravel, and Shells -CLAY- 1-1 Same as S-2

15 S-4 24/24 14.0 -16.0 1-1- 0.0 Same as S-2 1-1 16.0 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOW'S/FT DENSITY BLOWS/FT DENSITY * Vacuum removal by Baystate 0-4 V. LOOSE 0-2 V. SOFT " Sample S-1 collected by hand auger 4-10 LOOSE 2-4 SOFT Well CST-W08 was installed in this boring 10-30 M. DENSE 4-8 M. STIFF 30-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD NOTES: 1)THE STRATIFICATION UNES E-RESENT THE APPROXIMATE BOUNDARY BETWEEN SOiL TYPES. - RANs'rIONS MAYBE GRADUAL 2) WATER LEVEL READINGS r-A.5 BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LE VE_ OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENTS ARE MA . BORING No. CST-B10

G:\SUTTO.'SnA-ConUeraCnCoetagtosto p27-23,4.reabya]CST-BII GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA- BCEC 98121. MONITORING WELL NO. LOCATION C Street CST-W08 CLIENT BRA ELEVATION CONTRACTOR Dragin Drilling DRILLER T. Collins TOP OF PVC OBSERVED BY Eowyn Driscoll DATE 8/31/98 DEPTH TO GROUNDWATER FROM CHECKED BY Bill Cook DATE 8/31/98 TOP OF PVC

GROUND ELEVATION <----- FLUSH-MOUNTED ROADBOX (GROUND SURFACE) GENERAL SOIL CONDITIONS (NOT TO SCALE) THICKNESS OF SURFACE SEAL(S) 4.0" <- TYPE OF SURFACE SEAL(S) asphalt

I TYPE OF SURFACE CASING cast aluminum road box <- ID OF SURFACE CASING 4.25"

<- DEPTH BOTTOM OF CASING 10.0"

ID OF RISER PIPE 2.0"

<'-- TYPE OF RISER PIPE Schedule 40 PVC

<- TYPE OF BACKFILL AROUND RISER PIPE #1 Silica Sand

DEPTH TOP OF SEAL 4.0"

<- TYPE OF SEAL Bentonite chips DEPTH BOTTOM OF SEAL/TOP OF SAND COLUM 1.0'

<- DEPTH TOP OF SCREEN 2.0'

I- TYPE OF SCREEN Schedule 40 PVC SIZE OPENINGS 0.010" ID OF SCREEN 2.0"

<- TYPE OF BACKFILL AROUND SCREEN #1 Silica Sand

<----- DEPTH BOTTOM OF SCREEN 12.0'

<- DEPTH BOTTOM OF SAND COLUMN 16.0'

<- TYPE OF BACKFILL BELOW SCREEN #1 Silica Sand

C DIAMETER OF BOREHOLE 8.0" <- DEPTH BOTTOM OF BOREHOLE 16.0'

NOTES: MONITORING WELL NO. 0 CST-WO8 Refer to boring log CST-B10 WESTON & SAMPSON ENGINEERS, INC.

G. ~SLrroVSA.A-Convent Centerstogsgp27-2,3.4nearby xIs]CST.B II PROJECT REPORT OF BORING No. CST-B11 Weston & Sampson BRA-BCEC SHEET 1 OF 1 ENGINEERS, INC. Project No 98121.A CHKD BY WJC BORING Co. Dragin Drilling BORING LOCATION See attached plan FOREMAN Todd Collins GROUND SURFACE ELEV. DATUM WSE GEOLOGIST: Eowyn IC Driscoll DATE START 8/28/98 DATE END 8/31/98 SAMPLER- assoreRw Nsors s ncoNrsOrspursoon GROUNDWATER READINGS RIVENUSNGA 140 IuS MFAu.ING30 in DATE TiME WATERAT CASINGAT STABILIZATIONTIME CASING: onews ore. Cs ovus us so a.tnne 8N1rss8/31 0910 -5.0' - Upon completion FALLING 24 in CASING SIZE: OTHER: 4 1/4' HSA

DEPTNH CAS;NG SAMP.E PID SAMPLE DESCRIPTION NOTE STRATUM DESCRIPTION feet) ( ) No. PEN/REC (in) DE.TH (ft) BLOWS/6" (ppm) Burmister Classification *Asphalt and Cobbles -ASPHALT-

5 S-1 " 4.0 - 6.0 0.0 Dry, brown, f-c Sand and Cobble - SAND and COBBLE * FILL, little fine Gravel FILL -

10 10.0 S-2 24/24 10.0 - 12.0 1-1- 0.0 Wet, very soft, dark gray, CLAY, 1-1 little f-c Sand, trace fine Gravel, .. trace Shells

15 S-3 24/24 14.0 -16.0 1-1- 0.0 Same as S-2 S1-2 -CLAY-

S-4 24/24 18.0 -20.0 1-1- 0.0 Wet, soft, dark gray, CLAY, 20 2-2 trace fine Gravel, trace Shells 20.0 EOB

GRANULAR SOILS COHESIVE SOILS REMARKS: BLOWS,-T DENSITY BLOWS/FT DENSITY * Vacuum removal by Baystate 0-4 V. LOOSE 0-2 V. SOFT ** Sample S-1 collected by hand auger 4-10 LOOSE 2-4 SOFT Well CST-W09 was installed in this boring 10-30 M. DENSE 4-8 M. STIFF 3-50 DENSE 8-15 STIFF > 50 V. DENSE 15-30 V. STIFF > 30 HARD N TES: 1) THE STRATIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARY BETWEEN SOIL TYPES. TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS iAVE BEEN MADE IN THE DRILL HOLES AT TIMES AND UNDER CONDITIONS STATED ON THIS BORING LOG. FLUCTUATIONS IN THE LE~S.- OF GROUNDWATER MAYOCCUR DUE TO OTHER FACTORS THAN THOS PRESE.NT AT THE TIME MEASUREMENTS ARE MA.E. BORING No. CST-B11

G:1,SITTOM0Rcarrvewn CerrJ.ogs p 27.2.3.4+nearbyilsCSTB 11 GROUNDWATER MONITORING WELL INSTALLATION REPORT PROJECT NAME/NO. BRA - BCEC 98121.A MONITORING WELL NO. LOCATION C Street CST-WO9 CLIENT BRA ELEVATION CONTRACTOR Dragin Drilling DRILLER T. Collins TOP OF PVC OBSERVED BY Eowyn Driscoll DATE 8/31/98 DEPTH TO GROUNDWATER FROM CHECKED BY Bill Cook DATE 9/23/98 TOP OF PVC

GROUND ELEVATION <---- FLUSH-MOUNTED ROADBOX (GROUND SURFACE) GENERAL SOIL CONDITIONS (NOT TO SCALE) <- THICKNESS OF SURFACE SEAL(S) 4.0" TYPE OF SURFACE SEAL(S) asphalt

TYPE OF SURFACE CASING cast aluminum road box <- ID OF SURFACE CASING 4.25"

- DEPTH BOTTOM OF CASING 10.0"

I ID OF RISER PIPE 2.0" TYPE OF RISER PIPE Schedule 40 PVC

- TYPE OF BACKFILL AROUND RISER PIPE #1 Silica Sand

DEPTH TOP OF SEAL 4.0"

<- TYPE OF SEAL Bentonite chips DEPTH BOTTOM OF SEAL/TOP OF SAND COLUM 1.0'

- DEPTH TOP OF SCREEN 2.0'

TYPE OF SCREEN Schedule 40 PVC <- SIZE OPENINGS 0.010" ID OF SCREEN 2.0"

<------TYPE OF BACKFILL AROUND SCREEN #1 Silica Sand

<- DEPTH BOTTOM OF SCREEN 12.0'

<- DEPTH BOTTOM OF SAND COLUMN 13.0'

<- TYPE OF BACKFILL BELOW SCREEN #1 Silica Sand/Native Fill

<- DIAMETER OF BOREHOLE 8.0" <- DEPTH BOTTOM OF BOREHOLE 20.0'

NOTES: MONITORING WELL NO. CST-WO9 Refer to boring log CST-B11 WESTON & SAMPSON ENGINEERS, INC.

G:'.S UTrONBRA-Con non Centertoigsjgp 27-2,3.4neay.xs]CSTB 11 APPENDIX E GROUNDWATER ELEVATION RESULTS (Elevations collected by Weston and Sampson) C" *~<

Parcitfi-*," epth to %Ie

221 B02-W02 16.14 16.28 4.33 11.81 808 - 15.46 - - B09 - 16.00 - - 810 - 15.87 - - Bl - 16.05 - - 241 - 801 - 16.75 - - 261 B01-W01 15.49 15.93 7.22 8.27 - B02-W02 15.88 1623 7.78 8.1 B03 - 15.55 - - 271 B01-WO1 15.64 15.80 3.98 11.66 B02 - 15.70 - - 272 B01-WO1 18.68 15.94 10.65 8.03 B02-W02 18.5 15.65 10.4 8.1 B03-W03 16.76 13.94 8.24 8.52 B04 - 14.31. - - 805 - 1429 - - B06 - 15.85 - - 807 - 15.10 - - At 808 - 14.94 - - B09 - 15.78 - - 810 - . 15.69 - - 811 - 1628 - - B812 - 16.30 - - 273 B01 - 14.32 - - B02 - 15.18 - - 274 B01-W01 17.61 14.77 6.37 1124 B02-W02 19.63 16.86 6.12 13.51 B03 - 16.60 - - B04 - 17.61 - - 805 - 17.79 - - B06 - 14.86 - - B07 - 14.80 - - EXIST1 14.72 14.98 1.81 12.91 CST B10-W08 15.68 16.12 4.61 11.07 B11l-W09 1526 15.90 6.34 8.92