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19/12/1995 29.44 9163519357 ANNE M FARR PAGE 11
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<br /> Occurrence of the Gasoline Additive
<br /> MTBE in Shallow Ground Water in
<br /> Urban and Agricultural Areas
<br /> Merhyl reit-Neyl erher(MTBE)is a violatik organic cats uiads from methanol,wbieh is derived pnrmadly from
<br /> pound(VM)drrrved from natural gas that is addedrog�rtt mnual ps 0asoline an contain up to Is pement MTBE by
<br /> ;lute euherseasomally or year round in maty ports of L - vohtae Ia 1993,24 bilhon ponds of MTBE worth show
<br /> United Statex to increase the oamte kyet and to reduce car- $3 billion was�+dttoed so the United States Dotmesoc pm-
<br /> bon mononde and ozone low&in the air in 1999.produc- domon of MIBE and its etre is the United States decreases
<br /> new of MTBE rankrd second among all organic chemuwk tie treed for foreign ail
<br /> manufactured n are Uruud$dotes:Currrnrtg die u S Why ie MT6E o!Intetretrt'r
<br /> En worrmental Prorrcrion AS*wy(EPA)remanwly dam- Y
<br /> fres M73Eas a pacrtble human earawgen.ROOM cont- About 109 million Americas rive in Counties where
<br /> plaints related to MTBE in the air wwereflrst reported in MTBE m brieved to b■used(ha I).Health complmnes
<br /> Farbaab,Alaska in November 1992 when abrin 200 rest- related b MTBE to the air wets List mporwd in Furbaults
<br /> dears reported problems studh as headaches dtrsne=eye Alasim ha November 1992 when about 200 residents
<br /> irritation.burring of Me tragi attdthr+ow.dlsommanon,and reported litedasies.dis=ians,iterated eyes,burning of the
<br /> nausea.Simdar health complaian hawse been neguten d in now and throat,Couglmng,disodentation,and nausea ager
<br /> Anchorage,Alaska,Missoula,Montana, Milwaukee, MTBE dad been added to gasoline Health complaints also
<br /> wica sen and Newiersty have been registered ss Anchorage,Alaska,MiasouIs.
<br /> As parr of the U S Geologu=1 Surveys Nasional Water- 1 ,Wwauker,Wacoaan,and New Jormy Studws
<br /> QualityAssrsament(NAVVQA)Program,concennMuo►ar of dons by the Ceatets for Darma Coottal sod Pteveation to
<br /> 00 toCs wwsre measured in sanplesjh7m 211 Shallow welts F'rdmaJo,Alaska,Albany,New York and 5tatafoed,
<br /> in 8 urban arras and 574 shallow wells in 20 agricultural Concentra lave shown that the eoncentrat►on of MTBE in
<br /> arms Chkmjbrm and MTBE weer the rod mass fir endy the blood is related to the concentration or MTBE in the tat
<br /> detected KXs.MTBE was deteaed in 27percent oche wpb"uh tic greatest exposure,sucb as glaohne aennu
<br /> urban wells and 13 percent of the agricultural ww+rlls Con- sudon attendants and automobiit mccbaoaai,had the lamest
<br /> eentraaotss rartled from less than the direction level of macentranoos of MTBE is their blood(mngwg from less
<br /> Q2 p&T(micrograms prr liter)to as high as 13,00;7 pg/L dwa 0 00 to 37 pg(L),however,even oxmmuters had
<br /> when detected the mesdan concentration of MTBE vas measurable couaeotta4ous of MTBE ria their blood(teapot
<br /> 0 6 pWL MTBE was mosr)MquewN detected in shallow fiva less than 0 05 pglL to 26 pg/L) Funhetarore,the
<br /> ground water in Derive►, Colorado and urti n arras net New midy is Fairbanks showed that among commiuets thele was
<br /> England In Demur. 79 percent of the swVksfrom shallow a sigmficRot a ease to the concentration of MTTIE its!herr
<br /> urban wells had drrecrable eoncearration s of MTAE and in blood as■rmult of exposure to MTSE wbile driving
<br /> New England,97 percent of the sarnpla from urban wells Delodable coaccastmbous of MTBE were found io the blood
<br /> had dtttcwUe concenrrtations Only 3 percent of the wills of all those bmacd 2 motes alder the use of KMF was sus-
<br /> sampled in urban areas had concrntrations qFMTBE that pended in Alaska.
<br /> exceed 20 p ,which is rete am mated lower hisir of the What we the sources of MTBE? '
<br /> EPA&*drinking water health adwsorykwL Cowam mant
<br /> cotcermnanons below the health aedwasory are not exmaed to All sonaws of MTBE released to the eovirommeot arc oat
<br /> cause any adverse effects overs hfeame of etpasure MTBE well documented-The release of MTBE is 1992 from iadusK
<br /> is on the EM Drinking Water Priomy Last,which murm at try m the United States accounted for only 0 03 prow ue of
<br /> is a PC=ble cariddoe for f"Wr rrguhmom the MT136 that was ptoducaL Acc=Aag to EPA's Tomc
<br /> Release I for 1992,show 94 pettxot of lir MTBE
<br /> Whet is MTBE and why Is It used? rekased ria ry was released to the sit,3s percent
<br /> The Clean Air Ad Amendmetil:of L940 aaandate that
<br /> was 4i'charged to sarfaee rater,and 23 perusal was
<br /> utne
<br /> ooinpomds that add oxygen(oxygenates)be added ether filmed into haveUse
<br /> Releases of MTBF,as addwaoa to lic
<br /> seasoo&W or year round to gasohue in spedfic parts of ria from u t of M TOE havxe riot heft epian For
<br /> mfit a seMo tthe
<br /> country where concentrations of ozone in the summer a Mr- donsand from mobile soorces am&as eludes is unknown
<br /> bus mosonde to lire winter exceed established wt"us* best may be au important source of MTBE in the emvaron-
<br /> stasdrrds.Oxygenates an added to income the oaaae of ment Lea60g underground storage tasks and spi s si the
<br /> gasohae sad to improve at quality in turban areas.Olygem- had surface an stew sources of MTBE to the cavirunirmai
<br /> airs are added to mots than 30petceat of the sasohne In the
<br /> United Sates,and by The cod of this decade,the OxySenatsd What are the chemical properties of MTBE
<br /> d=uets Assaaaanoo bas estimated trot oityseowes will be and its fate In the environment?
<br /> added to 70 percent of the gasohm MISE a a Commonly
<br /> used wcygeoate because of its low cost,can of produafott. MTBE is an ether It is a volatile.(lammeW colorlm%
<br /> and favorable transfer and blending cliatrctensdcs.Itis f;gw0d at room temperature and it smells like turprutine
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