ffeiCw.;-:; c, ■■.■■'■.■. ■■ V- ^ERVIUE public library .K.\ V - •.' . ^’• pfeywir-* ; 3 1 55 0 629 25 ^.'([4' i*/' ii’!' (iv..... '■ V •-:, -., ill y, ;-i9S; ■■■■■■■ ■-■■■■.■ .-!'■■ 'w’'' >■■ ;^'^/:-4^^-.:;--'. ;■ '. vj.';-^ ^ 1 Consultants 1021 Main Street Winchester, MA 01890-1970 Geotechnical Environmental and Water Resources Engineering Public Repository RE: 50 Tufts Street Somerville, Massachusetts msM » - Letters to Residents April 27, 2005 ? , i* * I ( ' «■* At ' ^ 1 ■ f ' I ) t 0ID0 CL 00 LU Q CN I 00 _0 cd' o CN D ' 00 CQ CN c OO sz o cd' N- 00 CD CD CNI c0 CNI h- OO « 00 LO 00 00 CO- CO CO 0 CN 0 CCSOI J CMI COI Iz— > C^D CL > 00 £ T- 0 0 0lO0 q: 00) I0- CCND t0S 00 O^O 0O0sl '0—0 ■ •CD JZ 0 CO ^ o CNI 1 CN UO 03 c CD o ^ 2 !(o3/5)’ 0CCND0 Ch0D0- oc0oS0' 5^O■DO 0OCLNDO0I *-oCo4—O» .Cc2O , ^.02 Z—oO OC^DO “I icCoN.i 1 I 0C0N00I 0CN0I 0O0NI C0cD3 0z0 _CCCOO0 O Z MD3—- CCND coii '|i - SCoO %2c CO CDr CO .C O. 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Box 423 Somerville, MA 02143 Dear Mr. Compos: On February 23, 2005 the Department of Environmental Protection (DEP) collected air samples from the basement and first floor of your property located at 9 Tufts Street, Somerville, to test for the presence of Volatile Organic Compounds (VOCs). DEP initiated this sampling in response to receiving the results of an environmental investigation of a disposal site located at 50 Tufts Street, which indicated that contaminated groundwater had been discovered near your home. The results of the analyses show a low level of contamination, specifically 0.27 parts per billion volume (ppbv) of tetrachloroethylene (PCE), was found in tlie samples collected on the occupied first floor of your home. An estimated level of 0.19 ppbv was found in the basement, indicating the possible presence of contaminants, but at a level below the laboratory’s ability to accurately report the concentration. The 0.27 ppbv level is well below the Department’s threshold limit of 1.6 ppbv for PCE, which would constitute an Imminent Hazard, or a significant risk of harm to health over a short period of time. The value is also below the levels DEP typically finds in homes. However, based on the testing results from all of the homes on Tufts Street, DEP believes that this PCE is due to the contaminants in the groundwater near your home. Because these levels are so low, DEP recommends occasional venting (opening windows) in order to further reduce concentrations. Additional measures are not necessary at this time. Tbb iDforinidoa is avallsble io alternate format Call Donald M. Cornea, ADA Coordinator, al 1-617-556-10S7. TDD Service - 1-800-298-2207. One Winter Street, Boston, MA 02108* Phone (617) 654-6500 • Fax (617) 556-1049 • TDD # (800) 298-2207 DEP on the World Wide Web; http7/vvww.state.ma.us/dep Printed on Recycled Paper *■ ■ * r tjy-vo^ '''’^'3 '■1^ :■!•>?.! V •> ■ ^' '•'iti VtA'i''. 'o- ('■« tivi M IC’ u i.< i’\3. I|t£. f K»tr,'- ♦ ** •4 . • 'V r ’ \ \ ' vr,. ■' r’ <f. *A* ‘*.,U- * ■» .t .-1# ■*^ zi'^Ar- --r, i » ' » m 1 » » • r-*. ;■ • |S ' An V- * ■'*ifr'.^.:- ^a- v-'Kr* Jl.u'!i»iiM-v ^;.'..;?-'A>0'.>wa W(:fi:.— ■'-. iumt m'C»y'-'<^!i v-v£,g-a,.s;. Vviwru-osU;*'! v’: i, , ' ' '<isl - , . .' " 1> |■’tl3 ‘\. i> mt»' u^> .:»ien?Qf -^1 wl^.ri ^.^'f : ’ ' Ai 'Tr)': fiHi v4f ■-.‘ ^ " ! ci ='fu'<^rt'a.''^'' 'njV:Hti>n<*"rf;^ '/Miri *1. ^:u.15';jifcl fA-. iRA u- t'-idT^*bA ’4t\ A?*’' • * <r»*^ ~ /> * « K ty ■ *; T'wk %,j»/.^4Cr. ,,... ft •;!,,. > iX'J^fl A--- ^“4 ‘*M ,.';<arMi ,Hir» ^^-wWVta . . v,t. »•■'■ -< ' ■^:’* ■(''<.'.f^e«(?H»«\MI .41^ Attached are the laboratory results of the air samples taken from your property. .If you have any questions, please call me at (617) 654-6554. Sincerely, rvn Irene M. Dale Environmental Engineer ym *y ad uoy H. 4Yt*7 if- ^ ♦ ja'f uv<-f V*' 'tffi W^fTi/!*.''.. r 'i. i iT t I «Yferr>ati<2 «4j4i»V f •’ 4*# "0. 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