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February 2, 1993

Mr. Ed Hathaway U.S. Environmental Protection Agency Waste Management Division-HPS-1 JFK Federal Building Boston, Mauachuaetta 02203

RE: Air Monitoring Program Results Diapoaal Specialitt, [nc. Facility Rockingham, Vermont

Dear Mr. Hathaway:

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E;!gBalsam Project 6458.00

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An 8-bour air monitoring proll'Bm wu performed by Balsam Environmental Con~ultanta, Inc. (Balaam) on December 9, 1992 at the Diapoaal Speciallata, Inc. = (DSI) facility in R.oddnaham. Vermont in accordance with the protocol presented = in a November 4, 1992 letter to the U.S. Environmental Protection Agency (EPA). Air monitoring wu conducted to provide a more quantitative evaluation of air ­emissiona, and confirm paat volatile organic compound (VOC) air survey results.

C:J The air samples were collected uaing preasurized SUMMA paaaivated aampling caniatera aa described in the updated EPA Method T0-14, "Determination of Volatile Organic Compounda (VOCs) in Ambient Air using SUMMA Passivated Canister Sampling and Gu Chromatographic Analysis," April1988. Samples were u-. dee;gnated AQ· l , AQ-2, AQ.S, AQ-4 and AQ-5 (dupHcato of AQ-4). The earuston were located in the breathing zone approximately 4.5 feet above ground surface at aamplingloeationa illuatrated on Figure 1. The locations were selected baaed upon r-w wind direction (e.g., up and down wind of the landfill) and potential emission sources (i.e., active gu venta, leachate seeps, etc.).

Soils excavated during con1truction of the Route 5 Slope Stabifuation and Seepage u-. Control System are stockpiled at the Bite and are kept covered at all times with plutic to minimize infiltration ofprecipitation and to minimize the potential for air emissions. At the time of sampling, three soil etockpilea were present at the site aa shown in Figure 1. In order to minimUe potential effects from a stockpile, sample point AQ-3 wa1 moved approximately 200 feet northeast and upwind of the originally proposed location. Stockpiles were alto located approrimately 300 feet S<luthweat and approrimately 400 feet northeast of sample point AQ-1 (see Figure 1). Sample point AQ-2, located on an acceas road approximately 100 feet ~ J

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BALSAMENVIRONMENTAL CONSULTANTS INC Balsam Project 6458.00 February 2, 1993 Page 2

northwest of the Route 6 Slope Stabilization and Seepage Control System, may have been subject to emiaaiona from construction vehide traffic passing nearby during the teat period.

Winds were predominantly from the northwest and shifted to the northeast during the 8-bour sampling period. Wind speed ranged from 0-12 k:nota with inten:nittent guatl of 14 to 20 knots. The following meteorologic statistics were r ecorded at the Keene, New Hampshire Airport located approximately 25 miles fnlm the site:

Visibility: Clear with scattered clouds

Temperatures: l6°F Oow) to 23°F (high)

Dew Point: O' F to 5' F

Barometric Pressure (at 488' MSL): 30.03 to 30.13 inches of Mercury

Winds: From the NW and NE: 0-12 knots with gusts as high as 20 knots

After the 8-hour sample collection period, the canisters were shipped via overnight courier to Enaeco-Air Tol:ica Laboratory, City of Industry, California, under chain-of-custody protocol. EnteCO analyzed the air samples using a fuU-acan, low resolution gu chromatoeraphy-maaa spectrometry (GCIMS) analytical method as deacribed in method T0-14 in the EPA Guidance Manual; "Compendium of Methoda for the Determination ofTozic Organic Compounds in Ambient Air" EPA­60014-84-041 and the aubaequent 1988 update to Method T0-14.

Sample AQ-4, AQ-5 (duplicate of AQ-4) and the trip blank were not rep;Jrted to contain VOCa above laboratory reporting limits. In aample AQ-1, toluene at 3.2 part. per billion (ppb) and 1,1,1-Trichloroethane (1,1,1-TCA) at 6.7 ppb were reported preaent. Sample AQ-2 wae not reported to contain VOCa above laboratory reportine limita, with the ezception of acetone at 12 ppb. Sample AQ-3 wu r eported to contain ben&ene at 3.6 ppb, toluene at 39 ppb and 1,1,1-TCA at 2.9 ppb. Reaulta of the laboratory analyais are presented in Table 1 and Appendix A.

Resulta are well below National Institute for Occupational Safety and Health (NIOSH} and Occupational Safety and Health Administration (OSHA) abort-term. and time weighted averap ezpo~ure limita. Baaed on the abaence or low levels of VOCa in ambient air, the conaiatency of the reaulta of thia monitoring program with air monitoring reaulta during the Remediallnveatigation and the undentanding that the landftll will incorporate an improved ga.a management system u part of the landfill cap design, ambient air is judged not to be an ezpoaure pathway which would poae unacceptable riak to on-aite or off-site personnel.

..,= --= =

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BALSAM ENVIRONMENTAL CONSULTANTS. INCBalsam Project 6458.00 February 2, 1993 Page 3

If you have questions or a)mmentl, call either or the undersigned at (207) 623-9188.

?7ik ,i)..,, Jl•.;, Michael A Dgu;;;,:t.G., P.Hg. Regional Manager, Engineering Serviees

lo:A4636

Brian Woodo- vr DEC .,= Deniek Vallance- DSI Kevin Greenwood - DSI Sb.,.n Elliot - HGP&H -= =-

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~~~ TABLE 1

SUMMARY OF AIR 8AMPUNO RESULTS DISPOSAL SPECIA1JST8, INC.

~!l~tr~i; ~ 5--<2:o.:;c

ROCKINGHAM. VERMONT oQ a~e~

AQ·l .... .... AQ< AQ~ Trip BlaH

[~~~ Q flog" iii"~

c::"'~

~~~ Oiclllof'odilliiOfti~AM ·frMa 12 """"'-<'wM

N0(21 NIXUI

N0(2J NIXUJ

N0(2l NIX2.6l

N0(2l ND(2.1il

N0(2J NDIUI

N!:ll21 ND(UI ~ ~

1,2,-Diclllon-1,1.2.2.·T•tnfliiOI'MCJu.De-freoll114 ND<Z ND<Z N0(2J ND(21 ND(2J ND(21 ~a.lono.·-­ NIX2.1il

NIXSI NIXUJ NIXSJ

ND(UJ ND(SJ

ND(UJ NI)(SJ

NOIUI NDI31

NOIUI NOISI !;!li

"""-"' ­~-f'reoDII

1,1-~

NIXIii NIXII NO<m

NIXIII NIXU Nl)(~

NIXIii NOUl NDI21

NO(Ill NI)(1J ND(21

NIXIii NOIU NOI21

NDIIII NDIU

'"'" ~~ "'­

""""""'"""""1,1,2-Trid.Joro.1,2,2-Tri1luoroetb.alle - f'NDD I13-­"'""''-Cioloridet.-.-1.2-~--1.1-~ ViiQ'IA<Male ri--1,2-[)ido)oroetJ.o... 2-Bu~-1 , 1,1-~.,._...........,.._ ................. ............... ........._.....· ­_cW-1,3-DWolanpnpeDe•.....,.-i-1'__..--

NIXl OI NO(Iitl NIX101 NIX41 NOI41 ND(UJ NO< UI

'"'" NO<SJ

'"'" 8.712l ND(2J ND(SJ

'"'" NO<Ul ND(81 N0(2l N0(3J N0<31 3.21:31

NIX 10l N0(2J 12UOI NIX41 NOI41 NOIUI NO<UI N0<21 NO<Sl N0121 NDI21 ND(2J ND(3J N0<2J NO<UI N0(8J NDI2l NOISI NO<SI NO<SJ

NI)( 10) N0(2J ND(10) NDC41 NIX4l N()(UI NOCUJ NIX21 NOCSI

'"'" ..... ND(21 3.11(31

'"'" NO(UJ ND(8J

'"'" NI)(3J ND(3J

"""

ND(101 ND(2J NO( IOI ND(4J NI)(4J NO(UJ ND(2.1il

'"'" NI)(SJ NOC21

'"'" '"'" N0(3l

'"'"NOI2.1il ND(8J N0<21 ND(SJ N0(31 NOISI

NOI 101 NDI21 NDI 101 ND(4) NOI41 N()(UJ ND(UJ

'"'"NO(SJ NO<m

'"'" '"'" ND(S) ND(2) ND(UJ ND(8J

'"'" ND(!J N013) NO(!)

NOI 101

'"'" ND(101 ND(4J NOI4J NO(UJ NOCUI

'"'" NOC31

'"'" '"'" N0(21 N0(31 N0(2J ND(2.1il ND(8J ND(II:l ND(SJ NO(!) ND(S)

~~ f':0~mO

""' or;or 0

ca..,-= =-~1.3-~- ND(3J ND(SJ ND(31 N0(31 N0(31 N0131 1,1,2-~ ND(31 ND(3J ND(31 NOI31 NO(!I NO<SI T......,_··-.._._ 1,2-Dill...--....

ND(SI NIXIii NO< !I

'"'"

ND(3l NOCiil N()(SJ N()(2J

ND(SI ND(IIJ ND(S J NDI21

N0(31 NO(Iii N013J NOC21

N0(3) NO(Ill NOI31 NOIII:J

NO<Sl NOIIil N013J NDI21

C:J ""'""'" ­ NO(UJ N()(Ul N012.1il NIX2.1il NDI2.1il NOIUI Elllo'l'- ­T.... _

"'~-·-~1,1,l,2-~

NOIUI NOll!I Nl)(7l NI)(2J Nl)(4l

NOIUJ NOIIII ND11J

""'" NDI4)

NOIUJ NOll! I NDI71 N0121 NOI4J

NIX2.1il NOI IIJ NDI71 ND(21 ND(41

NOI2.1il NOll!)

'"'" NDI21 N[)(4)

N[)(UJ NDIIil N()(ll

'"'" ND(41

~

BeaqiChlorid.e 4-1'4yl TohMIII 1 ,3,6-~o-a.-

NDI21 NOI41 NDIUI

'"'" ND(41 ND(Ul

N[)(2J NDI41 N[)(2.1il

NIX2J ND(41 NDIUI

NDI21 NDI4) N[)(2.1il

""'" ND(4J NDIUI rw

1.2,4-~lbeoHM NDI31 NDISI NDI3l NOI3J NDI31 NDISJ l,S.Didllorobeutlllt NDI31 NDI3l NDI3J NOI3J ""'" NDISJ 1,4-0idalonoMue,.. 1,2-Didllo...O.-­1,2,4-Triellloi'Obeutllt

NDI4l NDIIil NI)(7J

NDI41 NDIIIJ NI)(7J

NDI41 NDIIil NDI7l

NDI41 NIXIil NDI71

ND(41 NIX Iii NO(?~

NDI4l NDIIil NDI71 co

H•echlonbut.dieM NDflil NOll!I NDIIil NDIIil NDIIII NIXIIJ

~

ppbl.,...l• ....... pe.-billioiii('IO!umeperwolurnl NO(IiJ•NotO.t.ct.d•ttbtrwportiiiCiilllitol lippbl..,,.,l

..... B...uaProjk164M.OO:A4838.U.

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rr NOTICE

If the fUmed ima~e is leas clear BFfSANITARY LANDFILl n than this Notice it is due to ADMINISTRATlVE RECORD BFI 001 u 5 2 g the quality of the document being filmed.

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