Environmental Consultants

July 25, 2003

Mr. Greg KlimasEnvironmental Products and Services of VermontP.O. Box 4620Burlington, VT 05406

Re: Underground Storage Tank Removal and Site AssessmentVergennes Union Elementary School

Dear Mr. Klimas:

Lincoln Applied Geology, Inc. (LAG) in conjunction with Environmental Productsand Services of Vermont, Inc. (EP&S), and Champlain Construction (Champlain)completed the removal, cleaning, assessment, and permanent closure of oneunderground fuel oil storage tank (UST) on July 23, 2003 at the aforementionedproperty located at 42 East Street, Vergennes (Figure 1). The geographicalcoordinates of the Site are: 44.1670841 N, 73.2481812 W. During the USTassessment free phase product detectable concentrations of volatile organiccompounds (VOCs) were noted in soils directly beneath and adjacent to the removedUST. In an attempt to determine the extent of the soil contamination, exploratoryexcavating was performed beneath the removed UST. Results of the excavating andassessment indicate that the soil and ground water have been impacted to depths atleast 8 feet below ground surface (BGS). All excavated soils were backfilled. A 2-inchdiameter PVC monitor well was installed in the UST excavation.

PID assay data from excavated soils, photographs, UST Permanent ClosureForm, and Site Investigation Expressway Notification Form are attached asAppendices A, B, C, and D, respectively. A sketch map of the Site showing; thelocation of the former UST (removed), newly installed ground water monitor well (MW-I), and other pertinent features related is included in the UST Permanent ClosureForm.

Summarv of Findinas

The following is a summary of the UST removal.

UST #OOl A 1 ,OOO-gallon, single wall, steel, No. 2 fuel oil UST approximately 42years old.

. The UST was noted in poor condition, with numerous holes andsevere pitting along sides, bottom, and seams.

163 Revel1 Road ?? Lincoln, VT 05443 . (802) 453-4384 ?? FAX (802) 453-5399

Mr. Greg KlimasPage 2July 25, 2003

. The associated piping was noted in good condition.

. Visual and olfactory impacts to soils surrounding the UST wereobserved.

. Ground water was encountered during the UST removal work, andis believed to be located between 5.0 and 6.0 feet BGS. A sheenwas observed on the ground water in the excavation.

. The UST was utilized for hot water heater operation inside theschool.

Tank Removal and Cleaning

On July 18’h, EP&S was on-site to purge, cut, and clean the UST prior toremoval. During the cleaning, several perforations in the UST were observed, andground water and #2 fuel oil seeped into the UST. LAG conducted an initial Siteassessment on July 18’h. The DigSafe network was notified of plans to excavate in thevicinity of the UST. The legal date and time for the excavation was determined to beTuesday, July 22”d, at 2 PM.

Approximately 100 gallons of fuel oil and water had infiltrated the UST by July23, 2002 and were hand bailed from the UST into %-gallon drums. When the UST wasempty and clean, adjacent soils were excavated and the UST was lifted from theexcavation. Soil types identified adjacent to and beneath the UST includeapproximately 2 feet of stony silty sand underlain by dark grey, low permeability siltyglacial till. Numerous holes and perforations in the sides, bottom, and seams of theUST were observed. The UST surface was also severely pitted. A heavy sheen wasobserved both in the soils and infiltrating ground water in the excavation. The UST wastransported to Carter’s Salvage in Bristol, Vermont where it will be cut up for scrapmetal. Approximately 100 gallons of residual fuel oil product liquid, water, and solidsludge were generated as a result of the cleaning efforts on July 23”. The waste wastransported and properly disposed of by Environmental Products 5 % Services, Inc. Theapproximate size of the excavation was 14’ by 10’.

Soil Evaluation

Excavated soils were screened with a properly calibrated photoionizationdetector (PID). The PID data is summarized and presented in Appendix A. The dataindicate that soils adjacent to the UST at approximately 3 - 4 feet below ground surfacecontained PID readings between 128 and 135 parts per million (ppm). All petroleumimpacted soils were backfilled within the excavation. Photographs taken during the

Lincoln Applied Geology, Inc.Environmental Consultants

163 Kevcll Road ?? Lincoln, VT 05443 ?? (802) 453-4384 0 FAX (8021 453-5399

Mr. Greg KlimasPage 3July 25, 2003

assessment are included in Appendix B. Ms. Donna Corcoran of the Addison CountyNorthwest Supervisory Union requested that LAG proceed with an ExpresswayInvestigation. The completed UST Permanent Closure Form and Site InvestigationExpressway Notification Form are included as Appendices C and D, respectively.

At the conclusion of excavation work, a 2-inch diameter PVC monitor well (MW-1) was installed within the area of the former UST. The well is constructed of a 5section of 2-inch diameter slotted PVC, wrapped with filter fabric and 5’ of 2-inch solidriser. The well was placed at a depth of 8 feet BGS. Champlain also placedapproximately six cubic yards of topsoil over the excavation.

Sensitive Receptor Survey

LAG conducted a survey of the Site and surrounding properties to locate anypotential sensitive receptors in the area. Immediately downgradient is a drainage swalefor stormwater from the school parking lots. There was no evidence of standing water,but sands and gravels have been recently deposited in this area, indicating that it islikely flooded at times. An active footer drain exists along the west side of the schoolbuilding. This drains to a manmade basin via subsurface piping approximately 200 feetto the east (downgradient) of the former UST. The effluent piping of the footer drainsystem was not observed to be discharging water during the morning of July 23”.However, water was observed to be discharging from immediately beneath the pipe in amanner that would suggest piping failure prior to ultimate discharge. The manmadebasin is designed to protect the downgradient wetland from stormwater runoff. Inaddition to the active footer drain, a relict clay tile footer drain was described by Mr.David Loven, the head maintenance person at the school. The relict footer drainpurportedly runs parallel with the south wall of the school in the vicinity of the formerUST, but was not observed during the excavation of the UST.

Conclusions

The collected data indicates that soil and ground water beneath the former USTis impacted by No. 2 fuel oil released by UST #OOl .

Recommendations

Based on the collected information, an Expressway Investigation will beperformed consisting of the following activities:

. Monitoring wells will be installed to fully delineate the extent andmagnitude of petroleum related contamination to soils and ground water.Four proposed well locations have been identified, and are depicted onthe Site Diagram of the nent Closure Form. Two monitoring

Lincoln Applied Geology, Inc.Environmental Consultants

163 Revel1 Road . Lincoln, VT 05443 . (802) 453-4384 ?? FAX ~80’2~453-5390

Mr. Greg KlimasPage 4July 25, 2003

magnitude of petroleum related contamination to soils and ground water.Four proposed well locations have been identified, and are depicted onthe Site Diagram of the UST Permanent Closure Form. Two monitoringwells will be located adjacent to the building to the east and west of theformer UST. These will indicate whether the relict footer drain is apreferential contaminant flow pathway. One additional monitoring well willbe located downgradient of the former UST, on the edge of the accessroad. One well will be located upgradient of the former UST, on the westside of the school building to provide background data.

. Water quality samples should be collected and analyzed for VOCs viaEPA Method 8260 and EPA Method 8015 Total Petroleum Hydrocarbons(TPH), Diesel Range Organics (DRO) from all monitoring wells andperimeter drain outlets.

. Upon receipt of the water quality analyses, a summary report will begenerated which will provide additional conclusions andrecommendations.

If you have any questions or comments please do not hesitate to call me orSteven LaRosa, LAG Chief of Operations, at (800) 477-4384.

Sincerely,Lincoln Applied Geology, Inc.

Jo%n L. KelliherHydrologist

JLWkgEnclosures

cc: Ms. Susan Thayer, USTP

Lincoln Applied Geology, Inc.lhvironmcntal Consultants

163 Rcvcll Road ?? Lincoln, VT 05443 ?? (802) 453-4384 ??FAX (802i 453-5399

Figure 1

42 East StreetVeraenner Vermont

GENERAL LOCATION MAP

SCALE 124ooO1 5 0 1 MILEt-- t----1 - c( 4

1W.l 0 Iwo zoo0 3x3 UXQ 5cJm m 7003 FEET_--- ~_ ._ ~re-s-s.-.-r~?

1 5 0 1 WOMETER- - b- c--i - - 1

CONTOUR INTERVAL 20 FEETDATUM IS MEAN SEA LEVEL

WestportNEW YORK-VERMONT

44073.82.TF-024PHOTOIN~P&~TED 1 9 8 3

Appendix A

PID Summary

PID Assay Summary (parts per million)

Indoor Airspace - Coffee RoomIndoor Airspace Laundry Room

Tank Bottom (6’) 140, 150, 144, 148South Side Wall (2’) 63, 81

(4’) 129, 136w 79,55

Beneath Fill (0.5’) 1.1, 3.4North Side Wall (2’) 49, 27, 31

(4’) 28, 29, 17(6’) 38, 16

BGBG

Appendix B

Site Photographs

Vergennes Union Elementary School43 East Street

Veraennes. Vermont

Photo #1 - Stained soil south of the UST

Photo #2 - Several holes located in the south wall of theUST

Photographs taken during site visit on 23 July 2003.Lincoln Applied Geology, Inc., 163 Revel1 Road, Lincoln, Vermont 05443

L

Vergennes Union Elementary School43 East Street

Veroennes Vermont

Photo #3 - Another view of the holes in south wall of theUST

Photo #4 - Holes located in the west wall of the UST

Photographs taken during site visit on 23 July 2003..incoln Applied Geology, Inc., 163 Revel1 Road, Lincoln, Vermont 0544 3

Vergennes Union Elementary School43 East Street

Verqennes, Vermont

Photo #5 - Stained soil and free product pooling after USTremoval

Photo #6 - Free product pooling on soils in fresh excavation

Photographs taken during site visit on 23 July 2003.Lincoln Applied Geology, Inc., 163 Revel1 Road, Lincoln,, Vermont 05443

Appendix C

Underground Storage TankPermanent Closure Form

Vermant Agency of Natural Resources, Department of Environmental (‘onservation, Waste Management Division103 South Main Street, West Building, Waterbury, Vermont 05671-0404, Telephone: (802) 241-3888

Street address:

Section A. Facility Information:Name of facility: i/j$jo L~L-C, u

43 E&.5$’ d, N f ou’ LU?ntwy..7~5

Owner of UST(s) to be closed:gUE s--.----.---~- f kc.pn

Contact(iferent than owierj:V&,?q LpJ La,+,Mailing address of owner:q3 E&-S+,-,=& veTelephone number of owner: e;‘73-33~ 1 \

c?Lpxe ._u_Ta*Coaact telephone #: 877- 3332_-.-

Section B. UST Closure Information: (please one)Reason for initiating LJST closure: -Suspected Leak XLiability -Replacement -Abandoned

Which tanks, if any, will be closed in-place: USTs# Authorized by:Disposal/destruction of removed UST(s): Location &+~~/~r&,~M e t h o d J”c~~,,

Date: / /- - -

Amount (gal.) and type of waste generated from USTs: &o cslEvy .# l&f, w&, + slal’tiDate: 2/a/a

(tank contents are hazardous wastes unless recovered as usable product) U u

Tank cleaning company (must be trained in confined space entry)hhft c (;y ws , ibi (Ef’* 5)&v~-t&~~Certified hazardous waste hauler : &PTS Generator ID number: &= 0~~90 11904

Section C. Initial site characterization:Work in this section must be completed by a professional etwironmental cotrsultant or hydrogeologist with experience in environmentalsampling for the presence of hazardous materials. A full report from the consultant must accompany this form.Excavation information: (some tunk pulls require more than one excavdon)

Tank(s) # Depth Groundwaterand Peak of ‘4% Bedrock encountered?

Excavation Depth Excavation PID Peak PID Depth (y/n) and at Soil type(A,B,C,W (f0 size(ft’) reading m reading (Iv depth (ft)

061 0’ [qo. 135 2’ ao+ VN)C yes s 6/ ly2l;q cl,,

Dig Safe Number: 2003 - X9(- KayPID information:Make:Gya Model: o’vP& Calibration information (date. I~I~VZ, gas): T&i&;, ST Isob.+=

Locate all readings and samples on site diagrarnNumber of soil samples collected for laboratory analysis? 0 results due date / /- - -Have any soils been polyencapsulated on site‘? Yes-(#yds’ PID range above zero 111* -~. ___I @) No dHave any soils been transported off site’? Yes-list amount (ydd): No&Location transported to: DEC official who approved-Amount of soils backfilled(yds’): 45Have limits of contamination been defined?

PID range abozozT h’w && -wYes- -

Is there any other known contamination on- site‘? Yes Nob<Comments:

Free Phase product encountered’? YesGroundwater encountered?

yes~~h~ickn~.y+ .$yrz~ No-

Are there existing monitoring wells on-site?eYes___ __

how many: (locate on site diagram)No-v!Have new monitoring wells been installed’? Yes X how many:l-(locate on site diagram)NoSamples obtained from monitoring wells for lab analysis’? Yes results due date / / No@.- - - -

Is there a water supply well on site’? Yes (check type: shallow r o c k > NoKNumber of public water supply wells are located within a 0.5 mi~ius’?~s%?&?mce m:7 - -Number of private water supply wells located within a 0.5 mile radius? 0 mm distance (ft.):

Receptors impacted? fi soil indoor air surface water- - - ambient air eroundwatel- water supply

Page I of2

Fac:l:ty ID#Section L): Tanks/Piping Remaining/installedRegardless of size, include USTs at site as to *status, e.g. “abandoned”, “in use”, or “to be installed”. (Mostinstallations require permits and advance notice to this office.)

UST# Product Size(gallons) Tank age *Tank status Piping age *Pip ing S ta tus

001 4-r. fire\ 1004 8 1; IA. 8 l.&jC

There arc no other tanks at this site.

Section E. Statements of UST closure cornpliunce.(must have both signatures or site assessment not complete)

.4s the party responsible for compliance with the Vermont UST Regulations and related statutes at this facility, Ihereby certify that the all of the information provided on this form is true and correct to the best of my knowledge.

L.eim?~o?,Date of signature

As the environmental consultant on site, I hereby certify that the site assessment requirements were performed inaccordance with DEC policy and regulations, and that information which I have provided on this form is true andcorrect to the best of my knowledge.

Return form along with complete narrative report and photographs to the Department of EnvironmentalConservation(DEC), Underground Storage Tank Program within 72 hours of closure.

Site diagram

\ .

This Closure Form may only be issued for the facility and the date indicated at top of page 1. Changes in thescheduled closure date should be phoned in at least 48 hours in advance. Both the vellow and white copies ofthis form must be returned to the address on the top of page 1 of this form: the nink copy should beretained bv theUST owner. A written report from an environmental consultant covering all aspects of closure and site assessment,complete with photographs and any other relevant data, must accompany this form. All procedures must beconducted by qualified personnel, to include training required by 29 CFR 1910.120. Documentation of all methodsand materials used must be adequate. All work must be performed in compliance with DEC policy “UST Closureand Site Assessment Requirements” as well as all applicable statues, regulations, and additional policies. TheDEC may reject inadequate closure forms and reports.

Page 2 of 2

Appendix D

Site InvestigationExpressway Notification Form

SITE INVESTIGATION EXPRESSWAY NOTIFICATION FORM

Site Owner: \I~~yJvl<~ Vkt, be&, LLi

Site Name, Town: derctaww\ liA.wbJL, Lbo~ ; ~qww

xYes, this site will participate in the Site Investigation Expressway Process.

_ No, this site will not participate in the Site Investigation Expressway Process

If yes, please complete the checklist below:

J c tou amination present in soils above action levels KYes _ No

J Free product observed Yes _ NoJ Groundwater contamination observed _ Yes NoJ Surface water contamination observed

-

JS-Yes &No

uspected release of hazardous substances KYes-No

J Affected receptors >( Yes _ No

If yes, please identify receptors including names and addresses of third party

receptors:

Please provide an estimated date of when you expect to submit Site Investigation Report: L&3/03

Owner’s Signature/Dat r\(mConsultant’s Signature/Date:QL&&%L +/a-3/*

3 A3 03,1 1 4The SMS has reviewed this express ay notification form and approves/disapproves of this action,

SMS Signature/Date:

Appendix E

Cost Estimate

Environmental Products and Services of Vemwnt, Inc.Vergennes Union Elementary School

Cost Estimate for Subsurface Investigation Work

&&& Proiect Coordination

Appendix E

Includes cwrdination with driller, noti0calion of the Digsafe network, and client

Geologist _ 2 W) 8 555.00 perhour $ 110.00

Subtotal Task A $ i10.00

Tapk #iI BorincuXionitorina Well lnstallatio~

Four wil borings will be advanced as indicated on the Sii Sketch. PID assays of soil boring cuttings will bedocumented. I !vs?swy, soil samples &II ba c&acted at Ihe ground watw interface and analyzed fcf VCCs via EPAMethod SO21 B and EPA Memod 8015, TPHKX70. Z-inch monitoring wells will be installed in each of +Jxe soil borings.Each well will be properly developed using a peristaitic pump. Detailed well legs will be generated. The newlyconstructed wells will be surveyed to allw potentiometric maps to be generated. A ffush-mount tvpe wellbox will beins-t&d at prwfwsty installed MN-1

Senior Project Manager -Geologist -

Subconkacted Driller -PID and Interface Probe -

Generator and Pump -Expkslmeter -

Flush Mwnt Road Box _Mileage -

(includes trip to lab)

1a11111

75

$75.00 perhour555.00 per hour

f2.100.00 lump *urn575.00 per day

$110.00 psrdayf50.00 per days50.00 each

SO.35 per mile

75.00440 .w

2.100.0075.00

l lo .w50.0050.w26.25

Subtotal Task B S 2,926.25

m Water Qualitv Samoling

t$ymxI~ one week afte the monitodng wells are installed, LAG will return to conduct water qualm sampling andmonitoring ofthe Site. In addition to collecting water qualii samples from each of tie monitoring wells. a sun%.ce waterquality sample will be collected from the footer drain eflkent.

Geologist -Field Technician -

Water Samples BTEXNTBE -Water Samples TPH DRO

PlD and Interface Proba -Sampling Equipment -

Mileage -(includes trip to lab)

166611

75

555.00 per hours45.00 per hourS5Q.W each$60.00 each575.00 perday

St 10.00 lump sumSO.35 per mile

55.00: 270.00

360.00: 360.00

75.60:110.00

S 26.25

Subtotal Task C S 1,230.OO

Task D- Recwtinq

Upon receipt of the water quality results. LAG will generate a comprehensive summay report detailing our conclusionsand recommendations fw the Site.

Senior Project Manager -Geologist -

DraRperson II -Administrative Assistant -

1 W) % S75.00 perhour 75.M)8 Ws) % S55.00 per hour : 440.004 hr@) ‘32 $55.00 per hour $ 22o.M)2 W) % S35.00 perhour $ 70.00

Subtotal Task D $ 805.00

Grand Total +a> $ 5JI71.26

Outlet +-,- - - --__

--__6 in. clay pipe

y 12 in. plastic pipe--__--__--__--__--__ --__

0f

0

t

o----------------------,0

area of soil contamination

Heating oil UST

kale: not to scale Legend:CB-1 EBtorm water catch basinUnderground structure

NORTH-_Date: July 10, 2002

Watershed Environmental Services, Inc. Project: Foundation Drain Rehab

P.O. Box 64947 Location: Vergennes Union Elementary School

Burlington, Vermont 05406Map #: 1

Type: Site Map

--_ _. . .._.- . _ ._-. __I_...~._1

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