GZA Engineers and GeoEnvironmental Inc Scientists

February 10 1995 File No 3103000

oz 140 Broadway Providence Rhode Island 02903

401-421-4140

FAX 401-751-8613

A Subsidiary of GZA

GeoEnvironmental Technologies Inc

Mr Dennis aRusso Environmental Manager RI Solid Waste Management Corporation Central Landfill 65 Shun Pike Johnston Rhode Island 02919

Re Central Landfill Operable Unit 2 RIFS Progress Report No 1 Work Period January 10 to February 10 1995

Dear Dennis

This letter with attachments serves as the first progress report prepared by GZA Geoenvironmental Inc (GZA) associated with activities completed to date on the Central Landfill Operable Unit 2 Remedial InvestigationFeasibility Study (RIFS) This progress report has been prepared in accordance with the requirements of Section 37 of the Administrative Order by ConsentUS EPA Docket No 1-87-1016 We prepared this letter on behalf of the RISWMC in accordance with the terms and conditions of our July 9 1992 Environmental Engineering Consulting Services Contract

Please do not hesitate to call me at ext 320 with any questions or comments regarding this information

Very truly yours

GZA GEOENVIRONMENTAL INC

Edward A Project Manager

EASrl

Attachments Progress Report No 1 February 8 1995 Memorandum

cc Mr James BrownUSEPA (3 copies) Mr Al KlingerUSEPA (1 copy) Mr Warren AngelRIDEM (2 copies)

FJOBS31030EASPRILET u

An Equal Opportune Fmplltigter M FVH

PROGRESS MADE THIS REPORTING PERIOD

oz Amended Consent Order

On January 17 1995 the April 1987 Administrative Order by Consent was amended to include a schedule of activities for the Operable Unit 2 Remedial Investigation (RI) and Feasibility Studies (FS) The schedule provides a time frame for RI activities through preparation of a Technical Memorandum documenting the results of the nine identified OU2Phase I tasks and preparation of a Phase II Work Plan for any additional studies necessary to complete the OU2 Final RI Report The schedule includes FS tasks through preparation of a Work Plan

Operable Unit 2Task 4 Well Installations

Drilling of the six shallow bedrock boreholes as described in the September 30 1994 Field Sampling Plan for OU2Task 4 commenced on January 19 and was completed on February 2 1995 Drilling activities were hampered by very wet weather which made access to some drilling locations difficult Due to these access problems some borehole locations were selectively offset by as much as 40 feet (MW95-51) In our opinion because of the size of the site and the directions in which wells were moved the offsets will have no effect on the useability of the data generated for the boreholes and wells

Packer permeability testing and discrete zone groundwater sampling commenced on February 1 1995 at location MW95-49 We anticipate that testing of the shallow boreholes will be completed on February 10 1995 This program was also impacted by the recent cold weather which caused some equipment to freeze Space heaters are now being used to warm all water bearing equipment associated with the testing Tests which were potentially affected by frozen flow meters or lines were redone after warming the equipment

GZA received the results of the laboratory gas chromatograph screening of volatile organics form boreholes MW95-47 and -48 on February 7 1995 These results were evaluated in conjunction with the drilling logs permeability data and field specific conductance screening results Based on the information reviewed GZA submitted our recommendation for the placement of the deep bedrock borehole (MW95-ML9) in close proximity to MW95-47 as opposed to MW95-48 The recommendation was made in a memorandum dated February 8 1995 attached After review Jim Brown of the EPA provided verbal agreement with the recommended location also on February 8 1995

Central Landfill Operable Unit 2 RIFS Progress Report No 1 Page 1 of 3

Drilling of Well MW95-ML9 commenced on February 10 1995 Note that the draft VOC screening results of MW95-47 Zone 1 (44 to 53) indicated the presence of toluene and chlorobenzene at concentrations of 67 and 64 parts per billion respectively After final review the toluene results were found to be none detected (ND) The February 8 1995 memorandum has been edited to reflect this change and is attached

Boreholes MW95-47 and MW95-48 encountered 31 feet and 34 feet of overburden respectively The observed overburden thickness is approximately double what was anticipated Initial indications are that some of these soils are relatively high oz transmissivity glacial outwash deposits To further evaluate the aquifer properties and groundwater quality within this area RISWMC installed three overburden wells Drilling of these overburden wells commenced on February 7 and was completed on February 9 1995 Two wells were located in close proximity to boreholes MW95-47 and -48 and were designated MW95-47S and -48S The third overburden well designated MW95-53 is located approximately equidistant from MW95-47 and -48 and about 100 feet to the southwest toward Pond No 2

UPCOMING EVENTSACTIVITIES

Plans Correspondence and Meetings

bull In accordance with the amended project schedule RISWMC will be submitting a Response Summary to EPAs August 25 1994 comments to the May 1993 Draft Operable Unit 2 Remedial Investigation Work Plan the week of February 13 1995

bull A schedule for submittal and implementation of Sampling and AnalysisField Sampling Plans for Tasks 3 4 5 7 and 9 in accordance with the amended schedule will be provided to EPA by RISWMC the week of February 27 1995

bull In accordance with the amended project schedule RISWMC will be submitting a Feasibility Study Work Plan with schedule the week of February 27 1995

Field Activities

OU2Task 4 - Well Installations Field activities for this task will continue into the next reporting period and will likely include the following

bull Deep hole drilling - commenced February 10 anticipated completion date is February 15 1995

Central Landfill Operable Unit 2 RIFS Progress Report No 1 Page 2 of 3

bull Shallow Borehole Packer TestingDiscrete Zone Sampling - commenced February 1 anticipated completion date is February 23 1995

bull Deep Borehole Packer TestingDiscrete Zone Sampling - anticipated start date is February 16 anticipated completion date is February 22 1995

bull Shallow Borehole Well Installation - anticipated start date is February 13 anticipated completion date is February 23 1995 oz

bull Borehole Geophysical Analysis - 3 Hot Spot boreholes February 23 and new deep borehole February 24

bull Deep Borehole Well Installation - anticipated start date is March 13 and completion date is March 14 1995

Please note that field activities are highly dependant on the weather and the availability of subcontractors and equipment and are thus subject to change We will notify EPA and RIDEM as such changes become evident

KEY PERSONAL CHANGES

The GZA project team for the OU2 RIFS currently consists of the following individuals Michael Powers is the Principal in Charge of the RIFS projects and technical reviewer for the RI Edward Summerly is the Project Manager for the RIFS projects and technical lead on the RI project Douglas Larson is the technical lead on the FS project Albert Ricciardelli is the technical reviewer for the FS Lisa Camp is the Human Health risk assessment specialist Timothy Briggs is the wetlands and ecological risk assessment specialist Steven Kline and Matthew Bellisle are the project engineers and Mark Dalpe is the project field geologist

FJOBS31030EASPRI RPI

Central Landfill Operable Unit 2 RIFS Progress Report No 1 Page 3 of 3

MEMORANDUM

TO Jim BrownUSEPA and Dennis aRussoRISWMC GZ FROM Ed SummerlyGZA

DATE February 8 1995

FILE NO 314792

SUBJECT Deep Bedrock Borehole MW95-ML9 at Central Landfill

The purpose of this memorandum is to provide GZAs recommendations for the location of the proposed 300 foot deep bedrock well (MW95-ML9) at the Central Landfill Superfund site Based on the available information we recommend placing the deep bedrock borehole beside borehole MW95-47 and not MW95-48 This recommendation is based upon the highly weathered and fractured nature of the bedrock observed at this location elevated ground water specific conductance relative to background and MW95-48 elevated groundwater VOC concentrations relative to MW95-48 and greatly elevated bedrock hydraulic conductivities relative to MW95-48 For your review we have attached 1) draft boring logs of the two shallow boreholes on which our recommendation is based 2) a table summarizing field screening laboratory screening and hydraulic conductivity testing results 3) laboratory gas chromatograph summary sheets and 4) a plan showing our approximate recommended location

We estimate that the drilling contractor will be available to begin drilling the deep borehole by Friday February 10 1995 and anticipate that drilling will take three to four days RISWMC will incur a demobilization charge if we are not in a position to begin drilling on this date Therefore your prompt attention to this matter would be greatly appreciated Please call me at (401) 421-4140 ext 320 with any questions or comments

Thank You

Ed Summerly

fjoU3 U7raquo-2e

GZA GEOENVIRONMENTAL INC PROJECT REP ORT OF BORING NOHW95-47 l40 BROADWAY PROVIDENCE RHODE ISLAND SHE

CENTRAL LANDFILL-OU2 bull TASK 4 FIL E No ST TV1 ~^~ GEOTECHN I CALGEOHYDROLOGI CAL CONSULTANTS JUMNilUN KHUUt 1SLANU CHK U BY

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREMAN JUHN BUWtN GROUND SUKI-AUt ELbVAllUN OAIUH GZA ENGINEER HAKR UALft DATE START 1-31-95 UAIt tNU pound-pound-yraquo

GROUNDWATER READINGS SAMPLER UNLESS OTHERWISE NOTED SAMPLER CONSISTS OF A 2lt bull SPLIT

SPOON DRIVEN USING A U5 Ib HAMMER FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

CASING UNLESS OTHERWISE NOTED CASING DRIVEN USING A 301 Ib 2-6-95 114 33 4 DAYS HAMMER FALLING 24 In

CASING SIZE 10 OTHER 9 78 AIR HAMME R AND 6 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r N W PEN DEPTH DESCRIPTION INSTALLED TESTING G S No REC (Ft) BLOWS6 Bur-mister CLASSIFICATION bull

S-1 2416 0-2 6-22 gtense tan coarse to fine SAND ND some Gravel trace Silt trace GRAVELLY

19-7 Organics witfi REFUSE (FILt) SAND AND REFUSE FILL

S-2 247 5-7 2-5 Medium dense black coarse to 5 SILTY SAND 70 fine SAND AND SILT trace fine AND REFUSE

5-10 Sravel changing at 6i to tan FILL arown coarse to find SAND trace Gravel with REFUSE (FILL)

9 WOOD FILL

10

BOULDER

S-3 246 13-15 10-22 Very dense gray coarse to fine 13 02 SAND AND GRAVEL trace Si It (TILL)

30-20 BOULDERY 15 TILL

17 BOULDERS

20 ND

S-4 2411 21-23 7-19 Dense gray coasre to fine SAND 21 trace Gravel trace Silt (TILL)

11-27 BOULDERY TILL

25 25

BOULDERS AND

COBBLES

30 HIN S-5 31 GRAB TanWhite GRANITE 02 1

15 31 Bedrock I 6 casing to 33

15 13 13

35 10 S-6 35 GRAB Highly weat hered GRANITE ND 2

are kaolinized) 03 HIGHLY

WEATHERED ZON 10

37 10 10 REMARKS 1 6 casing set at 33t

2 Pink kaotimzed rock from 36-37 silty sand-like wash

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED^ FLUCTUATIONS OF GROUNDWATER

GOLD8ERG-ZOINO amp ASSOCIATES INC40 BROAOUAY PROVIDENCE RfiOOE ISLAND

GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

PROJECTL

CENTRAL LANDFILL shy OU2-TASK 4 LI ui ILL V- Ift-- v

REPlt raquoT OF BORING NOMW95-47 SHEEI 2TUH 2 FILE No 31779-2 CHKD BY EAS7

) gt I L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD r H

N W G S No

PENREC

DEPTH (Ft) BLOWS6 Burmister CLASSIFICATION

DESCRIPTION INSTALLED ESTING

10

10 42

05 HIGHLY

10 WEATHERED ZONE

10 43

10 S-7 45 GRAB Weathered Granite WEAHTERED ND GRANITE

10 08 08 NO

10 50

10 10 10

S-8 50 GRAB 3 fayBrown silty fine SAND little Granite rock (angular) fragments VERY HIGHLY

WEATHERED AND FRACTURED

raquo

5

10 ZONE

55 10 S-9 55 GRAB GrayBrown silty fine SAND

little Granite rock (angular) ND

End of Exploration at 55plusmn

(Borehole collapsed to 53i)

60

65

70

75

80

4] Seam at 50-55 puiping 25 gpm fractured zones with silty sand seam borehole collapsed back to 5 Boring was advanced (rollerbit) from 50 to 55 (after collapse) Upon roller-bit withdrawal

the boring collapsed back to 53

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN HADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIC INS OF GROUNDWATER

___ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENtS WERE MADE f7A 1 ROPING MOHU95-47

GZA GEOENVIRONNENTAL INC PROJECT REP 3RT OF BORING NOMW95-48 TO BROADWAY PROVIDENCE RHODE SLAND ^ SHkfcl 1 Uh2 ^ J^^m tFILE No 3T5792 ~ ~ SEOTECHNICALGL-OHYDKOLOGICAL CONSULTANTS JUHNS1UN KHUUh ISLAND CHK1) BY ~

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREHAN JUHN bUWbN UKUUND SUKI-ALt fclbVAI ION UAIUN GZA ENGINEER bltKMtN KLINt UAIt ilAkl itY3 DATt tNU

GROUNDUATER READINGS SAMPLER uggg HWiiiOTlcmW t FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

I USING A 300 Ib 1-31-95 0850 113 21b 25 Days CASING WrtJHBWTS CAS1NG DRIVB 2-2-95 1126 665casf 4 Days

CASING SIZE 10 CASING OTHER 9 7 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r H W PEN DEPTH DESCRIPTION INSTALLED ESTING H G S No REC (Ft) BLOUS6 Bur-mister CLASSIFICATION

S-1 2414 0-2 3-20 Very dense trown SILT AND SAND TOP SOIL NO

31-50 lt brown fine to medium Sand little Silt (trace Gravel at depth) (FROZEN) with REFUSE SAND AND

REFUSE FILL

6 S-2 2419 7-9 10-12 Medium dense dark brown fine SILTY SAND 6

SAND AND Silt little wood chips ANDFiWOCO 8-6 trace coarse Sand (Stump Dunp)

10

11

OUTWASh SAND

15 S-3 2424 16-18 8-8 Medium dense tan fine SAND trace 8

coarse Sand chaning after 12 to 10-12 gray fine SAND (saturated)

20 20 ND 1

S-4 21 GRAB Gray fine to coarse SAND little ND 2 Gravel Silt

S-5 247 215-235 2-3 Loose gray fine to medium SAND some Silt trace Gravel (angular

7-1

GRAY 25 BOULDERY

TILL

S-6 GRAB 26 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

30

S-7 33 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

3 34p

35

APPARENT BEDROCK (Fe STAINED OTZ)

GRANITE

REMARKS 1 Spur fas ing to 21 dril ed open-hole to 24 need more 10 casing have to shut down without grouting 6T casing in p BceLn279)

2 S-5 is suspected tobe bullwash 3 Spun lot casing to 34 1sored open hole to 385 feet set 6 ID sch 40 steel well casing to a

depth at 385 and g route id into place

NOTES 1J STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2 WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIONS OF GROUNDWATER

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

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SAMPLE DEPTH (Ft) BLOUS6

SAMPLE DESCRIPTION

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STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

Drilling of Well MW95-ML9 commenced on February 10 1995 Note that the draft VOC screening results of MW95-47 Zone 1 (44 to 53) indicated the presence of toluene and chlorobenzene at concentrations of 67 and 64 parts per billion respectively After final review the toluene results were found to be none detected (ND) The February 8 1995 memorandum has been edited to reflect this change and is attached

Boreholes MW95-47 and MW95-48 encountered 31 feet and 34 feet of overburden respectively The observed overburden thickness is approximately double what was anticipated Initial indications are that some of these soils are relatively high oz transmissivity glacial outwash deposits To further evaluate the aquifer properties and groundwater quality within this area RISWMC installed three overburden wells Drilling of these overburden wells commenced on February 7 and was completed on February 9 1995 Two wells were located in close proximity to boreholes MW95-47 and -48 and were designated MW95-47S and -48S The third overburden well designated MW95-53 is located approximately equidistant from MW95-47 and -48 and about 100 feet to the southwest toward Pond No 2

UPCOMING EVENTSACTIVITIES

Plans Correspondence and Meetings

bull In accordance with the amended project schedule RISWMC will be submitting a Response Summary to EPAs August 25 1994 comments to the May 1993 Draft Operable Unit 2 Remedial Investigation Work Plan the week of February 13 1995

bull A schedule for submittal and implementation of Sampling and AnalysisField Sampling Plans for Tasks 3 4 5 7 and 9 in accordance with the amended schedule will be provided to EPA by RISWMC the week of February 27 1995

bull In accordance with the amended project schedule RISWMC will be submitting a Feasibility Study Work Plan with schedule the week of February 27 1995

Field Activities

OU2Task 4 - Well Installations Field activities for this task will continue into the next reporting period and will likely include the following

bull Deep hole drilling - commenced February 10 anticipated completion date is February 15 1995

Central Landfill Operable Unit 2 RIFS Progress Report No 1 Page 2 of 3

bull Shallow Borehole Packer TestingDiscrete Zone Sampling - commenced February 1 anticipated completion date is February 23 1995

bull Deep Borehole Packer TestingDiscrete Zone Sampling - anticipated start date is February 16 anticipated completion date is February 22 1995

bull Shallow Borehole Well Installation - anticipated start date is February 13 anticipated completion date is February 23 1995 oz

bull Borehole Geophysical Analysis - 3 Hot Spot boreholes February 23 and new deep borehole February 24

bull Deep Borehole Well Installation - anticipated start date is March 13 and completion date is March 14 1995

Please note that field activities are highly dependant on the weather and the availability of subcontractors and equipment and are thus subject to change We will notify EPA and RIDEM as such changes become evident

KEY PERSONAL CHANGES

The GZA project team for the OU2 RIFS currently consists of the following individuals Michael Powers is the Principal in Charge of the RIFS projects and technical reviewer for the RI Edward Summerly is the Project Manager for the RIFS projects and technical lead on the RI project Douglas Larson is the technical lead on the FS project Albert Ricciardelli is the technical reviewer for the FS Lisa Camp is the Human Health risk assessment specialist Timothy Briggs is the wetlands and ecological risk assessment specialist Steven Kline and Matthew Bellisle are the project engineers and Mark Dalpe is the project field geologist

FJOBS31030EASPRI RPI

Central Landfill Operable Unit 2 RIFS Progress Report No 1 Page 3 of 3

MEMORANDUM

TO Jim BrownUSEPA and Dennis aRussoRISWMC GZ FROM Ed SummerlyGZA

DATE February 8 1995

FILE NO 314792

SUBJECT Deep Bedrock Borehole MW95-ML9 at Central Landfill

The purpose of this memorandum is to provide GZAs recommendations for the location of the proposed 300 foot deep bedrock well (MW95-ML9) at the Central Landfill Superfund site Based on the available information we recommend placing the deep bedrock borehole beside borehole MW95-47 and not MW95-48 This recommendation is based upon the highly weathered and fractured nature of the bedrock observed at this location elevated ground water specific conductance relative to background and MW95-48 elevated groundwater VOC concentrations relative to MW95-48 and greatly elevated bedrock hydraulic conductivities relative to MW95-48 For your review we have attached 1) draft boring logs of the two shallow boreholes on which our recommendation is based 2) a table summarizing field screening laboratory screening and hydraulic conductivity testing results 3) laboratory gas chromatograph summary sheets and 4) a plan showing our approximate recommended location

We estimate that the drilling contractor will be available to begin drilling the deep borehole by Friday February 10 1995 and anticipate that drilling will take three to four days RISWMC will incur a demobilization charge if we are not in a position to begin drilling on this date Therefore your prompt attention to this matter would be greatly appreciated Please call me at (401) 421-4140 ext 320 with any questions or comments

Thank You

Ed Summerly

fjoU3 U7raquo-2e

GZA GEOENVIRONMENTAL INC PROJECT REP ORT OF BORING NOHW95-47 l40 BROADWAY PROVIDENCE RHODE ISLAND SHE

CENTRAL LANDFILL-OU2 bull TASK 4 FIL E No ST TV1 ~^~ GEOTECHN I CALGEOHYDROLOGI CAL CONSULTANTS JUMNilUN KHUUt 1SLANU CHK U BY

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREMAN JUHN BUWtN GROUND SUKI-AUt ELbVAllUN OAIUH GZA ENGINEER HAKR UALft DATE START 1-31-95 UAIt tNU pound-pound-yraquo

GROUNDWATER READINGS SAMPLER UNLESS OTHERWISE NOTED SAMPLER CONSISTS OF A 2lt bull SPLIT

SPOON DRIVEN USING A U5 Ib HAMMER FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

CASING UNLESS OTHERWISE NOTED CASING DRIVEN USING A 301 Ib 2-6-95 114 33 4 DAYS HAMMER FALLING 24 In

CASING SIZE 10 OTHER 9 78 AIR HAMME R AND 6 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r N W PEN DEPTH DESCRIPTION INSTALLED TESTING G S No REC (Ft) BLOWS6 Bur-mister CLASSIFICATION bull

S-1 2416 0-2 6-22 gtense tan coarse to fine SAND ND some Gravel trace Silt trace GRAVELLY

19-7 Organics witfi REFUSE (FILt) SAND AND REFUSE FILL

S-2 247 5-7 2-5 Medium dense black coarse to 5 SILTY SAND 70 fine SAND AND SILT trace fine AND REFUSE

5-10 Sravel changing at 6i to tan FILL arown coarse to find SAND trace Gravel with REFUSE (FILL)

9 WOOD FILL

10

BOULDER

S-3 246 13-15 10-22 Very dense gray coarse to fine 13 02 SAND AND GRAVEL trace Si It (TILL)

30-20 BOULDERY 15 TILL

17 BOULDERS

20 ND

S-4 2411 21-23 7-19 Dense gray coasre to fine SAND 21 trace Gravel trace Silt (TILL)

11-27 BOULDERY TILL

25 25

BOULDERS AND

COBBLES

30 HIN S-5 31 GRAB TanWhite GRANITE 02 1

15 31 Bedrock I 6 casing to 33

15 13 13

35 10 S-6 35 GRAB Highly weat hered GRANITE ND 2

are kaolinized) 03 HIGHLY

WEATHERED ZON 10

37 10 10 REMARKS 1 6 casing set at 33t

2 Pink kaotimzed rock from 36-37 silty sand-like wash

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED^ FLUCTUATIONS OF GROUNDWATER

GOLD8ERG-ZOINO amp ASSOCIATES INC40 BROAOUAY PROVIDENCE RfiOOE ISLAND

GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

PROJECTL

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REPlt raquoT OF BORING NOMW95-47 SHEEI 2TUH 2 FILE No 31779-2 CHKD BY EAS7

) gt I L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD r H

N W G S No

PENREC

DEPTH (Ft) BLOWS6 Burmister CLASSIFICATION

DESCRIPTION INSTALLED ESTING

10

10 42

05 HIGHLY

10 WEATHERED ZONE

10 43

10 S-7 45 GRAB Weathered Granite WEAHTERED ND GRANITE

10 08 08 NO

10 50

10 10 10

S-8 50 GRAB 3 fayBrown silty fine SAND little Granite rock (angular) fragments VERY HIGHLY

WEATHERED AND FRACTURED

raquo

5

10 ZONE

55 10 S-9 55 GRAB GrayBrown silty fine SAND

little Granite rock (angular) ND

End of Exploration at 55plusmn

(Borehole collapsed to 53i)

60

65

70

75

80

4] Seam at 50-55 puiping 25 gpm fractured zones with silty sand seam borehole collapsed back to 5 Boring was advanced (rollerbit) from 50 to 55 (after collapse) Upon roller-bit withdrawal

the boring collapsed back to 53

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN HADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIC INS OF GROUNDWATER

___ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENtS WERE MADE f7A 1 ROPING MOHU95-47

GZA GEOENVIRONNENTAL INC PROJECT REP 3RT OF BORING NOMW95-48 TO BROADWAY PROVIDENCE RHODE SLAND ^ SHkfcl 1 Uh2 ^ J^^m tFILE No 3T5792 ~ ~ SEOTECHNICALGL-OHYDKOLOGICAL CONSULTANTS JUHNS1UN KHUUh ISLAND CHK1) BY ~

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREHAN JUHN bUWbN UKUUND SUKI-ALt fclbVAI ION UAIUN GZA ENGINEER bltKMtN KLINt UAIt ilAkl itY3 DATt tNU

GROUNDUATER READINGS SAMPLER uggg HWiiiOTlcmW t FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

I USING A 300 Ib 1-31-95 0850 113 21b 25 Days CASING WrtJHBWTS CAS1NG DRIVB 2-2-95 1126 665casf 4 Days

CASING SIZE 10 CASING OTHER 9 7 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r H W PEN DEPTH DESCRIPTION INSTALLED ESTING H G S No REC (Ft) BLOUS6 Bur-mister CLASSIFICATION

S-1 2414 0-2 3-20 Very dense trown SILT AND SAND TOP SOIL NO

31-50 lt brown fine to medium Sand little Silt (trace Gravel at depth) (FROZEN) with REFUSE SAND AND

REFUSE FILL

6 S-2 2419 7-9 10-12 Medium dense dark brown fine SILTY SAND 6

SAND AND Silt little wood chips ANDFiWOCO 8-6 trace coarse Sand (Stump Dunp)

10

11

OUTWASh SAND

15 S-3 2424 16-18 8-8 Medium dense tan fine SAND trace 8

coarse Sand chaning after 12 to 10-12 gray fine SAND (saturated)

20 20 ND 1

S-4 21 GRAB Gray fine to coarse SAND little ND 2 Gravel Silt

S-5 247 215-235 2-3 Loose gray fine to medium SAND some Silt trace Gravel (angular

7-1

GRAY 25 BOULDERY

TILL

S-6 GRAB 26 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

30

S-7 33 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

3 34p

35

APPARENT BEDROCK (Fe STAINED OTZ)

GRANITE

REMARKS 1 Spur fas ing to 21 dril ed open-hole to 24 need more 10 casing have to shut down without grouting 6T casing in p BceLn279)

2 S-5 is suspected tobe bullwash 3 Spun lot casing to 34 1sored open hole to 385 feet set 6 ID sch 40 steel well casing to a

depth at 385 and g route id into place

NOTES 1J STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2 WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIONS OF GROUNDWATER

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

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SAMPLE DESCRIPTION

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STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

bull Shallow Borehole Packer TestingDiscrete Zone Sampling - commenced February 1 anticipated completion date is February 23 1995

bull Deep Borehole Packer TestingDiscrete Zone Sampling - anticipated start date is February 16 anticipated completion date is February 22 1995

bull Shallow Borehole Well Installation - anticipated start date is February 13 anticipated completion date is February 23 1995 oz

bull Borehole Geophysical Analysis - 3 Hot Spot boreholes February 23 and new deep borehole February 24

bull Deep Borehole Well Installation - anticipated start date is March 13 and completion date is March 14 1995

Please note that field activities are highly dependant on the weather and the availability of subcontractors and equipment and are thus subject to change We will notify EPA and RIDEM as such changes become evident

KEY PERSONAL CHANGES

The GZA project team for the OU2 RIFS currently consists of the following individuals Michael Powers is the Principal in Charge of the RIFS projects and technical reviewer for the RI Edward Summerly is the Project Manager for the RIFS projects and technical lead on the RI project Douglas Larson is the technical lead on the FS project Albert Ricciardelli is the technical reviewer for the FS Lisa Camp is the Human Health risk assessment specialist Timothy Briggs is the wetlands and ecological risk assessment specialist Steven Kline and Matthew Bellisle are the project engineers and Mark Dalpe is the project field geologist

FJOBS31030EASPRI RPI

Central Landfill Operable Unit 2 RIFS Progress Report No 1 Page 3 of 3

MEMORANDUM

TO Jim BrownUSEPA and Dennis aRussoRISWMC GZ FROM Ed SummerlyGZA

DATE February 8 1995

FILE NO 314792

SUBJECT Deep Bedrock Borehole MW95-ML9 at Central Landfill

The purpose of this memorandum is to provide GZAs recommendations for the location of the proposed 300 foot deep bedrock well (MW95-ML9) at the Central Landfill Superfund site Based on the available information we recommend placing the deep bedrock borehole beside borehole MW95-47 and not MW95-48 This recommendation is based upon the highly weathered and fractured nature of the bedrock observed at this location elevated ground water specific conductance relative to background and MW95-48 elevated groundwater VOC concentrations relative to MW95-48 and greatly elevated bedrock hydraulic conductivities relative to MW95-48 For your review we have attached 1) draft boring logs of the two shallow boreholes on which our recommendation is based 2) a table summarizing field screening laboratory screening and hydraulic conductivity testing results 3) laboratory gas chromatograph summary sheets and 4) a plan showing our approximate recommended location

We estimate that the drilling contractor will be available to begin drilling the deep borehole by Friday February 10 1995 and anticipate that drilling will take three to four days RISWMC will incur a demobilization charge if we are not in a position to begin drilling on this date Therefore your prompt attention to this matter would be greatly appreciated Please call me at (401) 421-4140 ext 320 with any questions or comments

Thank You

Ed Summerly

fjoU3 U7raquo-2e

GZA GEOENVIRONMENTAL INC PROJECT REP ORT OF BORING NOHW95-47 l40 BROADWAY PROVIDENCE RHODE ISLAND SHE

CENTRAL LANDFILL-OU2 bull TASK 4 FIL E No ST TV1 ~^~ GEOTECHN I CALGEOHYDROLOGI CAL CONSULTANTS JUMNilUN KHUUt 1SLANU CHK U BY

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREMAN JUHN BUWtN GROUND SUKI-AUt ELbVAllUN OAIUH GZA ENGINEER HAKR UALft DATE START 1-31-95 UAIt tNU pound-pound-yraquo

GROUNDWATER READINGS SAMPLER UNLESS OTHERWISE NOTED SAMPLER CONSISTS OF A 2lt bull SPLIT

SPOON DRIVEN USING A U5 Ib HAMMER FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

CASING UNLESS OTHERWISE NOTED CASING DRIVEN USING A 301 Ib 2-6-95 114 33 4 DAYS HAMMER FALLING 24 In

CASING SIZE 10 OTHER 9 78 AIR HAMME R AND 6 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r N W PEN DEPTH DESCRIPTION INSTALLED TESTING G S No REC (Ft) BLOWS6 Bur-mister CLASSIFICATION bull

S-1 2416 0-2 6-22 gtense tan coarse to fine SAND ND some Gravel trace Silt trace GRAVELLY

19-7 Organics witfi REFUSE (FILt) SAND AND REFUSE FILL

S-2 247 5-7 2-5 Medium dense black coarse to 5 SILTY SAND 70 fine SAND AND SILT trace fine AND REFUSE

5-10 Sravel changing at 6i to tan FILL arown coarse to find SAND trace Gravel with REFUSE (FILL)

9 WOOD FILL

10

BOULDER

S-3 246 13-15 10-22 Very dense gray coarse to fine 13 02 SAND AND GRAVEL trace Si It (TILL)

30-20 BOULDERY 15 TILL

17 BOULDERS

20 ND

S-4 2411 21-23 7-19 Dense gray coasre to fine SAND 21 trace Gravel trace Silt (TILL)

11-27 BOULDERY TILL

25 25

BOULDERS AND

COBBLES

30 HIN S-5 31 GRAB TanWhite GRANITE 02 1

15 31 Bedrock I 6 casing to 33

15 13 13

35 10 S-6 35 GRAB Highly weat hered GRANITE ND 2

are kaolinized) 03 HIGHLY

WEATHERED ZON 10

37 10 10 REMARKS 1 6 casing set at 33t

2 Pink kaotimzed rock from 36-37 silty sand-like wash

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED^ FLUCTUATIONS OF GROUNDWATER

GOLD8ERG-ZOINO amp ASSOCIATES INC40 BROAOUAY PROVIDENCE RfiOOE ISLAND

GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

PROJECTL

CENTRAL LANDFILL shy OU2-TASK 4 LI ui ILL V- Ift-- v

REPlt raquoT OF BORING NOMW95-47 SHEEI 2TUH 2 FILE No 31779-2 CHKD BY EAS7

) gt I L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD r H

N W G S No

PENREC

DEPTH (Ft) BLOWS6 Burmister CLASSIFICATION

DESCRIPTION INSTALLED ESTING

10

10 42

05 HIGHLY

10 WEATHERED ZONE

10 43

10 S-7 45 GRAB Weathered Granite WEAHTERED ND GRANITE

10 08 08 NO

10 50

10 10 10

S-8 50 GRAB 3 fayBrown silty fine SAND little Granite rock (angular) fragments VERY HIGHLY

WEATHERED AND FRACTURED

raquo

5

10 ZONE

55 10 S-9 55 GRAB GrayBrown silty fine SAND

little Granite rock (angular) ND

End of Exploration at 55plusmn

(Borehole collapsed to 53i)

60

65

70

75

80

4] Seam at 50-55 puiping 25 gpm fractured zones with silty sand seam borehole collapsed back to 5 Boring was advanced (rollerbit) from 50 to 55 (after collapse) Upon roller-bit withdrawal

the boring collapsed back to 53

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN HADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIC INS OF GROUNDWATER

___ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENtS WERE MADE f7A 1 ROPING MOHU95-47

GZA GEOENVIRONNENTAL INC PROJECT REP 3RT OF BORING NOMW95-48 TO BROADWAY PROVIDENCE RHODE SLAND ^ SHkfcl 1 Uh2 ^ J^^m tFILE No 3T5792 ~ ~ SEOTECHNICALGL-OHYDKOLOGICAL CONSULTANTS JUHNS1UN KHUUh ISLAND CHK1) BY ~

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREHAN JUHN bUWbN UKUUND SUKI-ALt fclbVAI ION UAIUN GZA ENGINEER bltKMtN KLINt UAIt ilAkl itY3 DATt tNU

GROUNDUATER READINGS SAMPLER uggg HWiiiOTlcmW t FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

I USING A 300 Ib 1-31-95 0850 113 21b 25 Days CASING WrtJHBWTS CAS1NG DRIVB 2-2-95 1126 665casf 4 Days

CASING SIZE 10 CASING OTHER 9 7 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r H W PEN DEPTH DESCRIPTION INSTALLED ESTING H G S No REC (Ft) BLOUS6 Bur-mister CLASSIFICATION

S-1 2414 0-2 3-20 Very dense trown SILT AND SAND TOP SOIL NO

31-50 lt brown fine to medium Sand little Silt (trace Gravel at depth) (FROZEN) with REFUSE SAND AND

REFUSE FILL

6 S-2 2419 7-9 10-12 Medium dense dark brown fine SILTY SAND 6

SAND AND Silt little wood chips ANDFiWOCO 8-6 trace coarse Sand (Stump Dunp)

10

11

OUTWASh SAND

15 S-3 2424 16-18 8-8 Medium dense tan fine SAND trace 8

coarse Sand chaning after 12 to 10-12 gray fine SAND (saturated)

20 20 ND 1

S-4 21 GRAB Gray fine to coarse SAND little ND 2 Gravel Silt

S-5 247 215-235 2-3 Loose gray fine to medium SAND some Silt trace Gravel (angular

7-1

GRAY 25 BOULDERY

TILL

S-6 GRAB 26 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

30

S-7 33 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

3 34p

35

APPARENT BEDROCK (Fe STAINED OTZ)

GRANITE

REMARKS 1 Spur fas ing to 21 dril ed open-hole to 24 need more 10 casing have to shut down without grouting 6T casing in p BceLn279)

2 S-5 is suspected tobe bullwash 3 Spun lot casing to 34 1sored open hole to 385 feet set 6 ID sch 40 steel well casing to a

depth at 385 and g route id into place

NOTES 1J STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2 WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIONS OF GROUNDWATER

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

CENTRAL LANDFILL - OU2 - TASK 4 tftliio laquoampgtpound GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

1

t

1

C B

G O N U G Sjingt ft0

PENREC

SAMPLE DEPTH (Ft) BLOUS6

SAMPLE DESCRIPTION

Bunnister CLASSIFICATION

STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

bdquo__ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENfS WERE MADE GZA | BORING NOMW95-48

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

MEMORANDUM

TO Jim BrownUSEPA and Dennis aRussoRISWMC GZ FROM Ed SummerlyGZA

DATE February 8 1995

FILE NO 314792

SUBJECT Deep Bedrock Borehole MW95-ML9 at Central Landfill

The purpose of this memorandum is to provide GZAs recommendations for the location of the proposed 300 foot deep bedrock well (MW95-ML9) at the Central Landfill Superfund site Based on the available information we recommend placing the deep bedrock borehole beside borehole MW95-47 and not MW95-48 This recommendation is based upon the highly weathered and fractured nature of the bedrock observed at this location elevated ground water specific conductance relative to background and MW95-48 elevated groundwater VOC concentrations relative to MW95-48 and greatly elevated bedrock hydraulic conductivities relative to MW95-48 For your review we have attached 1) draft boring logs of the two shallow boreholes on which our recommendation is based 2) a table summarizing field screening laboratory screening and hydraulic conductivity testing results 3) laboratory gas chromatograph summary sheets and 4) a plan showing our approximate recommended location

We estimate that the drilling contractor will be available to begin drilling the deep borehole by Friday February 10 1995 and anticipate that drilling will take three to four days RISWMC will incur a demobilization charge if we are not in a position to begin drilling on this date Therefore your prompt attention to this matter would be greatly appreciated Please call me at (401) 421-4140 ext 320 with any questions or comments

Thank You

Ed Summerly

fjoU3 U7raquo-2e

GZA GEOENVIRONMENTAL INC PROJECT REP ORT OF BORING NOHW95-47 l40 BROADWAY PROVIDENCE RHODE ISLAND SHE

CENTRAL LANDFILL-OU2 bull TASK 4 FIL E No ST TV1 ~^~ GEOTECHN I CALGEOHYDROLOGI CAL CONSULTANTS JUMNilUN KHUUt 1SLANU CHK U BY

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREMAN JUHN BUWtN GROUND SUKI-AUt ELbVAllUN OAIUH GZA ENGINEER HAKR UALft DATE START 1-31-95 UAIt tNU pound-pound-yraquo

GROUNDWATER READINGS SAMPLER UNLESS OTHERWISE NOTED SAMPLER CONSISTS OF A 2lt bull SPLIT

SPOON DRIVEN USING A U5 Ib HAMMER FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

CASING UNLESS OTHERWISE NOTED CASING DRIVEN USING A 301 Ib 2-6-95 114 33 4 DAYS HAMMER FALLING 24 In

CASING SIZE 10 OTHER 9 78 AIR HAMME R AND 6 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r N W PEN DEPTH DESCRIPTION INSTALLED TESTING G S No REC (Ft) BLOWS6 Bur-mister CLASSIFICATION bull

S-1 2416 0-2 6-22 gtense tan coarse to fine SAND ND some Gravel trace Silt trace GRAVELLY

19-7 Organics witfi REFUSE (FILt) SAND AND REFUSE FILL

S-2 247 5-7 2-5 Medium dense black coarse to 5 SILTY SAND 70 fine SAND AND SILT trace fine AND REFUSE

5-10 Sravel changing at 6i to tan FILL arown coarse to find SAND trace Gravel with REFUSE (FILL)

9 WOOD FILL

10

BOULDER

S-3 246 13-15 10-22 Very dense gray coarse to fine 13 02 SAND AND GRAVEL trace Si It (TILL)

30-20 BOULDERY 15 TILL

17 BOULDERS

20 ND

S-4 2411 21-23 7-19 Dense gray coasre to fine SAND 21 trace Gravel trace Silt (TILL)

11-27 BOULDERY TILL

25 25

BOULDERS AND

COBBLES

30 HIN S-5 31 GRAB TanWhite GRANITE 02 1

15 31 Bedrock I 6 casing to 33

15 13 13

35 10 S-6 35 GRAB Highly weat hered GRANITE ND 2

are kaolinized) 03 HIGHLY

WEATHERED ZON 10

37 10 10 REMARKS 1 6 casing set at 33t

2 Pink kaotimzed rock from 36-37 silty sand-like wash

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED^ FLUCTUATIONS OF GROUNDWATER

GOLD8ERG-ZOINO amp ASSOCIATES INC40 BROAOUAY PROVIDENCE RfiOOE ISLAND

GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

PROJECTL

CENTRAL LANDFILL shy OU2-TASK 4 LI ui ILL V- Ift-- v

REPlt raquoT OF BORING NOMW95-47 SHEEI 2TUH 2 FILE No 31779-2 CHKD BY EAS7

) gt I L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD r H

N W G S No

PENREC

DEPTH (Ft) BLOWS6 Burmister CLASSIFICATION

DESCRIPTION INSTALLED ESTING

10

10 42

05 HIGHLY

10 WEATHERED ZONE

10 43

10 S-7 45 GRAB Weathered Granite WEAHTERED ND GRANITE

10 08 08 NO

10 50

10 10 10

S-8 50 GRAB 3 fayBrown silty fine SAND little Granite rock (angular) fragments VERY HIGHLY

WEATHERED AND FRACTURED

raquo

5

10 ZONE

55 10 S-9 55 GRAB GrayBrown silty fine SAND

little Granite rock (angular) ND

End of Exploration at 55plusmn

(Borehole collapsed to 53i)

60

65

70

75

80

4] Seam at 50-55 puiping 25 gpm fractured zones with silty sand seam borehole collapsed back to 5 Boring was advanced (rollerbit) from 50 to 55 (after collapse) Upon roller-bit withdrawal

the boring collapsed back to 53

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN HADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIC INS OF GROUNDWATER

___ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENtS WERE MADE f7A 1 ROPING MOHU95-47

GZA GEOENVIRONNENTAL INC PROJECT REP 3RT OF BORING NOMW95-48 TO BROADWAY PROVIDENCE RHODE SLAND ^ SHkfcl 1 Uh2 ^ J^^m tFILE No 3T5792 ~ ~ SEOTECHNICALGL-OHYDKOLOGICAL CONSULTANTS JUHNS1UN KHUUh ISLAND CHK1) BY ~

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREHAN JUHN bUWbN UKUUND SUKI-ALt fclbVAI ION UAIUN GZA ENGINEER bltKMtN KLINt UAIt ilAkl itY3 DATt tNU

GROUNDUATER READINGS SAMPLER uggg HWiiiOTlcmW t FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

I USING A 300 Ib 1-31-95 0850 113 21b 25 Days CASING WrtJHBWTS CAS1NG DRIVB 2-2-95 1126 665casf 4 Days

CASING SIZE 10 CASING OTHER 9 7 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r H W PEN DEPTH DESCRIPTION INSTALLED ESTING H G S No REC (Ft) BLOUS6 Bur-mister CLASSIFICATION

S-1 2414 0-2 3-20 Very dense trown SILT AND SAND TOP SOIL NO

31-50 lt brown fine to medium Sand little Silt (trace Gravel at depth) (FROZEN) with REFUSE SAND AND

REFUSE FILL

6 S-2 2419 7-9 10-12 Medium dense dark brown fine SILTY SAND 6

SAND AND Silt little wood chips ANDFiWOCO 8-6 trace coarse Sand (Stump Dunp)

10

11

OUTWASh SAND

15 S-3 2424 16-18 8-8 Medium dense tan fine SAND trace 8

coarse Sand chaning after 12 to 10-12 gray fine SAND (saturated)

20 20 ND 1

S-4 21 GRAB Gray fine to coarse SAND little ND 2 Gravel Silt

S-5 247 215-235 2-3 Loose gray fine to medium SAND some Silt trace Gravel (angular

7-1

GRAY 25 BOULDERY

TILL

S-6 GRAB 26 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

30

S-7 33 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

3 34p

35

APPARENT BEDROCK (Fe STAINED OTZ)

GRANITE

REMARKS 1 Spur fas ing to 21 dril ed open-hole to 24 need more 10 casing have to shut down without grouting 6T casing in p BceLn279)

2 S-5 is suspected tobe bullwash 3 Spun lot casing to 34 1sored open hole to 385 feet set 6 ID sch 40 steel well casing to a

depth at 385 and g route id into place

NOTES 1J STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2 WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIONS OF GROUNDWATER

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

CENTRAL LANDFILL - OU2 - TASK 4 tftliio laquoampgtpound GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

1

t

1

C B

G O N U G Sjingt ft0

PENREC

SAMPLE DEPTH (Ft) BLOUS6

SAMPLE DESCRIPTION

Bunnister CLASSIFICATION

STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

bdquo__ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENfS WERE MADE GZA | BORING NOMW95-48

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

GZA GEOENVIRONMENTAL INC PROJECT REP ORT OF BORING NOHW95-47 l40 BROADWAY PROVIDENCE RHODE ISLAND SHE

CENTRAL LANDFILL-OU2 bull TASK 4 FIL E No ST TV1 ~^~ GEOTECHN I CALGEOHYDROLOGI CAL CONSULTANTS JUMNilUN KHUUt 1SLANU CHK U BY

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREMAN JUHN BUWtN GROUND SUKI-AUt ELbVAllUN OAIUH GZA ENGINEER HAKR UALft DATE START 1-31-95 UAIt tNU pound-pound-yraquo

GROUNDWATER READINGS SAMPLER UNLESS OTHERWISE NOTED SAMPLER CONSISTS OF A 2lt bull SPLIT

SPOON DRIVEN USING A U5 Ib HAMMER FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

CASING UNLESS OTHERWISE NOTED CASING DRIVEN USING A 301 Ib 2-6-95 114 33 4 DAYS HAMMER FALLING 24 In

CASING SIZE 10 OTHER 9 78 AIR HAMME R AND 6 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r N W PEN DEPTH DESCRIPTION INSTALLED TESTING G S No REC (Ft) BLOWS6 Bur-mister CLASSIFICATION bull

S-1 2416 0-2 6-22 gtense tan coarse to fine SAND ND some Gravel trace Silt trace GRAVELLY

19-7 Organics witfi REFUSE (FILt) SAND AND REFUSE FILL

S-2 247 5-7 2-5 Medium dense black coarse to 5 SILTY SAND 70 fine SAND AND SILT trace fine AND REFUSE

5-10 Sravel changing at 6i to tan FILL arown coarse to find SAND trace Gravel with REFUSE (FILL)

9 WOOD FILL

10

BOULDER

S-3 246 13-15 10-22 Very dense gray coarse to fine 13 02 SAND AND GRAVEL trace Si It (TILL)

30-20 BOULDERY 15 TILL

17 BOULDERS

20 ND

S-4 2411 21-23 7-19 Dense gray coasre to fine SAND 21 trace Gravel trace Silt (TILL)

11-27 BOULDERY TILL

25 25

BOULDERS AND

COBBLES

30 HIN S-5 31 GRAB TanWhite GRANITE 02 1

15 31 Bedrock I 6 casing to 33

15 13 13

35 10 S-6 35 GRAB Highly weat hered GRANITE ND 2

are kaolinized) 03 HIGHLY

WEATHERED ZON 10

37 10 10 REMARKS 1 6 casing set at 33t

2 Pink kaotimzed rock from 36-37 silty sand-like wash

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED^ FLUCTUATIONS OF GROUNDWATER

GOLD8ERG-ZOINO amp ASSOCIATES INC40 BROAOUAY PROVIDENCE RfiOOE ISLAND

GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

PROJECTL

CENTRAL LANDFILL shy OU2-TASK 4 LI ui ILL V- Ift-- v

REPlt raquoT OF BORING NOMW95-47 SHEEI 2TUH 2 FILE No 31779-2 CHKD BY EAS7

) gt I L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD r H

N W G S No

PENREC

DEPTH (Ft) BLOWS6 Burmister CLASSIFICATION

DESCRIPTION INSTALLED ESTING

10

10 42

05 HIGHLY

10 WEATHERED ZONE

10 43

10 S-7 45 GRAB Weathered Granite WEAHTERED ND GRANITE

10 08 08 NO

10 50

10 10 10

S-8 50 GRAB 3 fayBrown silty fine SAND little Granite rock (angular) fragments VERY HIGHLY

WEATHERED AND FRACTURED

raquo

5

10 ZONE

55 10 S-9 55 GRAB GrayBrown silty fine SAND

little Granite rock (angular) ND

End of Exploration at 55plusmn

(Borehole collapsed to 53i)

60

65

70

75

80

4] Seam at 50-55 puiping 25 gpm fractured zones with silty sand seam borehole collapsed back to 5 Boring was advanced (rollerbit) from 50 to 55 (after collapse) Upon roller-bit withdrawal

the boring collapsed back to 53

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN HADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIC INS OF GROUNDWATER

___ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENtS WERE MADE f7A 1 ROPING MOHU95-47

GZA GEOENVIRONNENTAL INC PROJECT REP 3RT OF BORING NOMW95-48 TO BROADWAY PROVIDENCE RHODE SLAND ^ SHkfcl 1 Uh2 ^ J^^m tFILE No 3T5792 ~ ~ SEOTECHNICALGL-OHYDKOLOGICAL CONSULTANTS JUHNS1UN KHUUh ISLAND CHK1) BY ~

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREHAN JUHN bUWbN UKUUND SUKI-ALt fclbVAI ION UAIUN GZA ENGINEER bltKMtN KLINt UAIt ilAkl itY3 DATt tNU

GROUNDUATER READINGS SAMPLER uggg HWiiiOTlcmW t FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

I USING A 300 Ib 1-31-95 0850 113 21b 25 Days CASING WrtJHBWTS CAS1NG DRIVB 2-2-95 1126 665casf 4 Days

CASING SIZE 10 CASING OTHER 9 7 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r H W PEN DEPTH DESCRIPTION INSTALLED ESTING H G S No REC (Ft) BLOUS6 Bur-mister CLASSIFICATION

S-1 2414 0-2 3-20 Very dense trown SILT AND SAND TOP SOIL NO

31-50 lt brown fine to medium Sand little Silt (trace Gravel at depth) (FROZEN) with REFUSE SAND AND

REFUSE FILL

6 S-2 2419 7-9 10-12 Medium dense dark brown fine SILTY SAND 6

SAND AND Silt little wood chips ANDFiWOCO 8-6 trace coarse Sand (Stump Dunp)

10

11

OUTWASh SAND

15 S-3 2424 16-18 8-8 Medium dense tan fine SAND trace 8

coarse Sand chaning after 12 to 10-12 gray fine SAND (saturated)

20 20 ND 1

S-4 21 GRAB Gray fine to coarse SAND little ND 2 Gravel Silt

S-5 247 215-235 2-3 Loose gray fine to medium SAND some Silt trace Gravel (angular

7-1

GRAY 25 BOULDERY

TILL

S-6 GRAB 26 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

30

S-7 33 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

3 34p

35

APPARENT BEDROCK (Fe STAINED OTZ)

GRANITE

REMARKS 1 Spur fas ing to 21 dril ed open-hole to 24 need more 10 casing have to shut down without grouting 6T casing in p BceLn279)

2 S-5 is suspected tobe bullwash 3 Spun lot casing to 34 1sored open hole to 385 feet set 6 ID sch 40 steel well casing to a

depth at 385 and g route id into place

NOTES 1J STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2 WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIONS OF GROUNDWATER

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

CENTRAL LANDFILL - OU2 - TASK 4 tftliio laquoampgtpound GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

1

t

1

C B

G O N U G Sjingt ft0

PENREC

SAMPLE DEPTH (Ft) BLOUS6

SAMPLE DESCRIPTION

Bunnister CLASSIFICATION

STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

bdquo__ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENfS WERE MADE GZA | BORING NOMW95-48

08

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

GOLD8ERG-ZOINO amp ASSOCIATES INC40 BROAOUAY PROVIDENCE RfiOOE ISLAND

GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

PROJECTL

CENTRAL LANDFILL shy OU2-TASK 4 LI ui ILL V- Ift-- v

REPlt raquoT OF BORING NOMW95-47 SHEEI 2TUH 2 FILE No 31779-2 CHKD BY EAS7

) gt I L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD r H

N W G S No

PENREC

DEPTH (Ft) BLOWS6 Burmister CLASSIFICATION

DESCRIPTION INSTALLED ESTING

10

10 42

05 HIGHLY

10 WEATHERED ZONE

10 43

10 S-7 45 GRAB Weathered Granite WEAHTERED ND GRANITE

10 08 08 NO

10 50

10 10 10

S-8 50 GRAB 3 fayBrown silty fine SAND little Granite rock (angular) fragments VERY HIGHLY

WEATHERED AND FRACTURED

raquo

5

10 ZONE

55 10 S-9 55 GRAB GrayBrown silty fine SAND

little Granite rock (angular) ND

End of Exploration at 55plusmn

(Borehole collapsed to 53i)

60

65

70

75

80

4] Seam at 50-55 puiping 25 gpm fractured zones with silty sand seam borehole collapsed back to 5 Boring was advanced (rollerbit) from 50 to 55 (after collapse) Upon roller-bit withdrawal

the boring collapsed back to 53

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN HADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIC INS OF GROUNDWATER

___ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENtS WERE MADE f7A 1 ROPING MOHU95-47

GZA GEOENVIRONNENTAL INC PROJECT REP 3RT OF BORING NOMW95-48 TO BROADWAY PROVIDENCE RHODE SLAND ^ SHkfcl 1 Uh2 ^ J^^m tFILE No 3T5792 ~ ~ SEOTECHNICALGL-OHYDKOLOGICAL CONSULTANTS JUHNS1UN KHUUh ISLAND CHK1) BY ~

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREHAN JUHN bUWbN UKUUND SUKI-ALt fclbVAI ION UAIUN GZA ENGINEER bltKMtN KLINt UAIt ilAkl itY3 DATt tNU

GROUNDUATER READINGS SAMPLER uggg HWiiiOTlcmW t FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

I USING A 300 Ib 1-31-95 0850 113 21b 25 Days CASING WrtJHBWTS CAS1NG DRIVB 2-2-95 1126 665casf 4 Days

CASING SIZE 10 CASING OTHER 9 7 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r H W PEN DEPTH DESCRIPTION INSTALLED ESTING H G S No REC (Ft) BLOUS6 Bur-mister CLASSIFICATION

S-1 2414 0-2 3-20 Very dense trown SILT AND SAND TOP SOIL NO

31-50 lt brown fine to medium Sand little Silt (trace Gravel at depth) (FROZEN) with REFUSE SAND AND

REFUSE FILL

6 S-2 2419 7-9 10-12 Medium dense dark brown fine SILTY SAND 6

SAND AND Silt little wood chips ANDFiWOCO 8-6 trace coarse Sand (Stump Dunp)

10

11

OUTWASh SAND

15 S-3 2424 16-18 8-8 Medium dense tan fine SAND trace 8

coarse Sand chaning after 12 to 10-12 gray fine SAND (saturated)

20 20 ND 1

S-4 21 GRAB Gray fine to coarse SAND little ND 2 Gravel Silt

S-5 247 215-235 2-3 Loose gray fine to medium SAND some Silt trace Gravel (angular

7-1

GRAY 25 BOULDERY

TILL

S-6 GRAB 26 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

30

S-7 33 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

3 34p

35

APPARENT BEDROCK (Fe STAINED OTZ)

GRANITE

REMARKS 1 Spur fas ing to 21 dril ed open-hole to 24 need more 10 casing have to shut down without grouting 6T casing in p BceLn279)

2 S-5 is suspected tobe bullwash 3 Spun lot casing to 34 1sored open hole to 385 feet set 6 ID sch 40 steel well casing to a

depth at 385 and g route id into place

NOTES 1J STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2 WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIONS OF GROUNDWATER

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

CENTRAL LANDFILL - OU2 - TASK 4 tftliio laquoampgtpound GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

1

t

1

C B

G O N U G Sjingt ft0

PENREC

SAMPLE DEPTH (Ft) BLOUS6

SAMPLE DESCRIPTION

Bunnister CLASSIFICATION

STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

bdquo__ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENfS WERE MADE GZA | BORING NOMW95-48

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

GZA GEOENVIRONNENTAL INC PROJECT REP 3RT OF BORING NOMW95-48 TO BROADWAY PROVIDENCE RHODE SLAND ^ SHkfcl 1 Uh2 ^ J^^m tFILE No 3T5792 ~ ~ SEOTECHNICALGL-OHYDKOLOGICAL CONSULTANTS JUHNS1UN KHUUh ISLAND CHK1) BY ~

BORING Co DL MAKER DRILLING COMPANY BORING LOCATION SEE PLAN OREHAN JUHN bUWbN UKUUND SUKI-ALt fclbVAI ION UAIUN GZA ENGINEER bltKMtN KLINt UAIt ilAkl itY3 DATt tNU

GROUNDUATER READINGS SAMPLER uggg HWiiiOTlcmW t FALLING 30 In DATE TIME WATER CASING STABILIZATION TIME

I USING A 300 Ib 1-31-95 0850 113 21b 25 Days CASING WrtJHBWTS CAS1NG DRIVB 2-2-95 1126 665casf 4 Days

CASING SIZE 10 CASING OTHER 9 7 AIR HAMMER

) C B A L SAMPLE SAMPLE DESCRIPTION STRATUM EQUIPMENT FIELD gt

r H W PEN DEPTH DESCRIPTION INSTALLED ESTING H G S No REC (Ft) BLOUS6 Bur-mister CLASSIFICATION

S-1 2414 0-2 3-20 Very dense trown SILT AND SAND TOP SOIL NO

31-50 lt brown fine to medium Sand little Silt (trace Gravel at depth) (FROZEN) with REFUSE SAND AND

REFUSE FILL

6 S-2 2419 7-9 10-12 Medium dense dark brown fine SILTY SAND 6

SAND AND Silt little wood chips ANDFiWOCO 8-6 trace coarse Sand (Stump Dunp)

10

11

OUTWASh SAND

15 S-3 2424 16-18 8-8 Medium dense tan fine SAND trace 8

coarse Sand chaning after 12 to 10-12 gray fine SAND (saturated)

20 20 ND 1

S-4 21 GRAB Gray fine to coarse SAND little ND 2 Gravel Silt

S-5 247 215-235 2-3 Loose gray fine to medium SAND some Silt trace Gravel (angular

7-1

GRAY 25 BOULDERY

TILL

S-6 GRAB 26 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

30

S-7 33 GRAB Gray fine to coarse SAND AND ND GRAVEL little- Silt

3 34p

35

APPARENT BEDROCK (Fe STAINED OTZ)

GRANITE

REMARKS 1 Spur fas ing to 21 dril ed open-hole to 24 need more 10 casing have to shut down without grouting 6T casing in p BceLn279)

2 S-5 is suspected tobe bullwash 3 Spun lot casing to 34 1sored open hole to 385 feet set 6 ID sch 40 steel well casing to a

depth at 385 and g route id into place

NOTES 1J STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2 WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATIONS OF GROUNDWATER

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

CENTRAL LANDFILL - OU2 - TASK 4 tftliio laquoampgtpound GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

1

t

1

C B

G O N U G Sjingt ft0

PENREC

SAMPLE DEPTH (Ft) BLOUS6

SAMPLE DESCRIPTION

Bunnister CLASSIFICATION

STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

bdquo__ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENfS WERE MADE GZA | BORING NOMW95-48

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

PROJECT REP( JRT OF BORING NoJtW95-48 WSBMW 0laquoEElHODECiSLAND

CENTRAL LANDFILL - OU2 - TASK 4 tftliio laquoampgtpound GEOTECHNICALGEOHYDROLOGICAL CONSULTANTS

1

t

1

C B

G O N U G Sjingt ft0

PENREC

SAMPLE DEPTH (Ft) BLOUS6

SAMPLE DESCRIPTION

Bunnister CLASSIFICATION

STRATUM DESCRIPTION

4V

EQUIPMENT INSTALLED

FIELD TESTING

10 Fractured Zone

10 42

10 S-8 43 GRAB Gray GRANITE (rock cuttings) ND

10 10 10

SCITUATE GRANITE

10 10

10 10 10

10 S-9 52 GRAB Gray GRANITE (rock cuttings) ND

10

12 55

12

12 12

12 12 60

60 12 WEATHERED

ZONE 5 12 12

62

12 S-10 63 GRAB Gray GRANITE (rock cuttings) ND

65 12 12 raquoTTEE

12 12 6 10

End of Exploration at 685t 70

75

80

REMARKS 4 Large fracture at 42t 5 Color change in rock cuttings from gray tdeg tanbrown (Fe staining) from 60-62 plusmn 6 Borehole was flushed with compressed air for 10 minutest

NOTES 1) STRATIFICATION LINES REPRESENT APPROXIMATE BOUNDARY BETWEEN SOIL TYPES TRANSITIONS MAY BE GRADUAL 2) WATER LEVEL READINGS HAVE BEEN MADE AT TIMES AND UNDER CONDITIONS STATED FLUCTUATK WS OF GROUNDWATER

bdquo__ MAY OCCUR DUE TO OTHER FACTORS THAN THOSE PRESENT AT THE TIME MEASUREMENfS WERE MADE GZA | BORING NOMW95-48

08

DR

AU

UC

DU

CTI

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BID

ITY

CO i 5pound P 1i Uo o laquo o i i io a

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

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PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl

FILE NO 314792

PROJECT MGR E SUMMERLY

DATE SAMPLED 2695 DATE TESTED 2795

GZA GEOENVIRONMENTAL INC ENVIRONMENTAL CHEMISTRY LAB

320 NEEDHAM STREET

NEWTON UPPER FALLS MA 02164

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

SAMPLE ID

LABORATORY

1 TETRACHLOROETHENE

2 TRICHLOROETHENE

3 11-DICHLOROETHENE

4 cis 12-DICHLORETHENE

5 trans 1 2-DICHLOROETHENE

6 VINYL CHLORIDE

7 111-TRICHLOROETHANE

8 11-DICHLOROETHANE

9 12-DICHLOROETHANE

10 CHLOROETHANE

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

17 ACETONE

18 METHYL ETHYL KETONE

19 METHYL ISOBUTYL KETONE

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113 24 CHLOROBENZENE

25 STYRENE

26 13-DICHLOROBENZENE

27 14-DICHLOROBENZENE

28 12-DICHLOROBENZENE

TOTAL COMPOUNDS (1-25)

METHANE (VV-air PPM)

UNKNOWNS ()

(CONCENTRATION - PPB ugL)

Method MW95-47 Z-1 MW95-47Z-2 MW95-47Z-3 METHOD

Blank DETECTION 61793-B 61794-A 61795-A 61796-A LIMIT

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 20

ND ND ND ND 10

ND ND ND ND 30

ND TRACE(13) ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 1000

ND ND ND ND 1000

ND ND ND ND 200

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 50

ND ND ND ND 10

ND 97 97 64 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

ND ND ND ND 10

| ND 110 97 64 |

| ND 1600 1400 1100 10 PPM

| ND 0) ND ND

COMMENTS A trace level of one late eluting possibly semi-volatile unknown compound was detected in sample

MW95-47 Z-1 Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZAGEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER (CONCENTRATION - PPB ugL)

SAMPLE ID Method EQP BLANK MW95-48 Z-1 MW95-48 Z-2 MW95-48 Z-3 METHOD

Blank (2195) (2395) (2395) (2395) DETECTION

LABORATORY 61710-B 61 711 -A 61712-A 61713-A 61714-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

7 111-TRICHLOROETHANE ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER

12 BENZENE

13 TOLUENE

14 ETHYL BENZENE

15 mp-XYLENES

16 0-XYLENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND^

ND

ND

ND

ND

ND

ND

ND

ND

67

ND

ND

ND

ND

ND

TRACE(74)

ND

ND

ND

30

50

50

50

50

50

17 ACETONE

18 METHYL ETHYL KETONE

1 9 METHYL ISOBUTYL KETONE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

1000

1000

200

20 METHYLENE CHLORIDE

21 CHLOROFORM

22 CARBON TETRACHLORIDE

23 FREON113

24 CHLOROBENZENE

25 STYRENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

TRACE(27)

ND

ND

ND

ND

ND

TRACE(23)

ND

50

50

50

10

10

10

26 13-DICHLOROBENZENE

27 1 4-DICHLOROBENZENE

28 12-DICHLOROBENZENE

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

ND

10

10

10

TOTAL COMPOUNDS (1-25) ND ND ND 94 TRACE(30)

METHANE (VV-air PPM) ND ND 66 230 240 10 PPM

UNKNOWNS () 0) 0) (D I 0) 0)

COMMENTS Trace levels of one (1) early eluting unknown compound which can be tentatively identified as methanol

were detected in the Method Blank and in all of the above samples Methanol is a laboratory artifact that is inherent to this

method and is most likely not present in the above noted samples Results are reported with two significant digits

ANALYZED BY REVIEWED BY

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

PROJECT CLF - OU2 - TASK 4 - JOHNSTON Rl GZA GEOENVIRONMENTAL INC

FILE NO 314792 ENVIRONMENTAL CHEMISTRY LAB

PROJECT MGR E SUMMERLY 320 NEEDHAM STREET

DATE SAMPLED as noted NEWTON UPPER FALLS MA 02164

DATE TESTED 2695

GZA GC SCREENING FOR VOLATILE ORGANICS IN WATER

(CONCENTRATION - PPB ugL)

SAMPLE ID Method MW95-48 Z-4 MW95-48Z-5 MW95-49 Z-1 MW95-49Z-6 METHOD Blank (2395) (2395) (2195) (2295) DETECTION

LABORATORY 61717-B 61715-A 61716-A 61718-A 61719-A LIMIT

1 TETRACHLOROETHENE ND ND ND ND ND 10

2 TRICHLOROETHENE ND ND ND ND ND 10

3 11-DICHLOROETHENE ND ND ND ND ND 10

4 cis 12-DICHLORETHENE ND ND ND ND ND 10

5 trans 12-DICHLOROETHENE ND ND ND ND ND 10

6 VINYL CHLORIDE ND ND ND ND ND 10

0 ND ND ND ND ND 10

8 11-DICHLOROETHANE ND ND ND ND ND 10

9 12-DICHLOROETHANE ND ND ND ND ND 20

10 CHLOROETHANE ND ND ND ND ND 10

11 METHYL-t-BUTYL ETHER ND ND ND ND ND 30

12 BENZENE ND ND ND ND ND 50

13 TOLUENE ND 38 ND 59 41 50

14 ETHYL BENZENE ND ND ND ND ND 50

15 mp-XYLENES ND ND ND ND ND 50

16 o-XYLENE ND ND ND ND ND 50

17 ACETONE ND ND ND ND ND 1000

18 METHYL ETHYL KETONE ND ND ND ND ND 1000

19 METHYL ISOBUTYL KETONE ND ND ND ND ND 200

20 METHYLENE CHLORIDE ND ND ND ND ND 50

21 CHLOROFORM ND ND ND ND ND 50

22 CARBON TETRACHLORIDE ND ND ND ND ND 50

23 FREON113 ND ND ND ND ND 10

24 CHLOROBENZENE ND BMDL ND ND ND 10

25 STYRENE ND ND ND ND ND 10

26 13-DICHLOROBENZENE ND ND ND ND ND 10

27 14-DICHLOROBENZENE ND ND ND ND ND 10

28 12-DICHLOROBENZENE ND ND ND ND ND 10

TOTAL COMPOUNDS (1-25) ND 38 ND 59 41

METHANE (VV-air PPM) ND | 26 45 | ND ND 10 PPM

UNKNOWNS () ND ND ND ND ND

COMMENTS Results are reported with two significant digits

ANALYZED BY REVIEWED BY

1. barcode 3222
2. barcodetext SEMS Doc ID 3222

1. barcode 3222
2. barcodetext SEMS Doc ID 3222