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REGION <br /> ;aai 20uce A.Swim X <br /> d ?h=c(91t)) <br /> t .f 95327-5093 :'- - <br /> """"'- phone(9107 1-454000 — -- ?ae'riusoc,G6 <br /> FAX(916)2_<5_1015 <br /> 18 JLiy !997 <br /> Revised 30 August 1997 <br /> To Whom It Lfay Con—_77L . <br /> A_,gALYSIS REQL_= FOR OXYGr IATE COP,lPOL�-S L-SED Ii I C�ORNLA_ <br /> OALSOM�E.EF-A.jN=01D 3250 (8240-3 and 8020) <br /> A t a June 1997 mee+dg at the Deoar�tenr of�:eakh Senecas in Be*`<eiey, the statewide <br /> analytical methods cotizmirm for es`�biisivng analytic=l and additive smn=cs, was <br /> _.formed that oxygenate compounds,which may cuns�tate a threat M g ocmdwate:•, other <br /> than tif-73E, have been and are being added m a soiine. T"ae fist incudes, i-t order of <br /> a_rLa vticai iderttiecxdon <br /> 1. Methanol <br /> 2. Etharoi <br /> 3. Tar arj Butyi 1.lcciwl (7BA) <br /> NME <br /> 3. Di-socrovvi ether(DTI-) <br /> c. E hvi 72= f 3umi Eiier- r.l E) <br /> 7. Tersarj kiyi Ntetf yl Ether(T 3tif E) <br /> =:,e Eest acre- are aicohois and the Lanz* 6uri are ether crxnpc ..ds. B::ianci Lias been used for <br /> sure-Tai years in C.aiir-Ol_ MTBE, as you`CAW,has be--.used as an octane a'Lh=.c=additive <br /> since the late 970s and is how used at a Lv.#,=perc'_e as an oxv,�ate in a ssoli:.e- 'Now <br /> we Have Ieaated that,T�ytE:as been added to Caiiiox= a.yes,since 1995. D=has been <br /> lysed on the East Cori,,but_Tttty has bem feund m SatiLii=C i fc=da = xatz* (_Clay <br /> 1997) and San joaq.=Coum7(Aupst 997)- TBA has beers found m and water at a <br /> gasaiine s,—mce station site i n San joactran County(1100 pab,Angast 1597). To date,we have <br /> no in fc=ai*on=egarcingfwse use of ELBE in['at;n,T,;a_ <br /> isle untroduc=n of these additives greyer ttt anaiytzCii groblMns far Ianorator_e5 be,_use the <br /> =,Id-ple anaivtes can ca—jute from the column. For;nstarn,T?ANE may ca—efixt7a with <br /> be-izan m use r33s3020 anaivtical method^c*****Ftp used Mday. ineTe:,-,we belie-re mai <br /> Mass SFecyophotome+v(NIS) is the most detixddm prosedsaz to den= ne oxygen ate <br /> co=ounds. YIS will iceiy a=ese the cost of samnie anal? s;but,arml ancdmmm <br /> cox?=aha--eve analytical.method is deTm=ed±at can dist nguml`i be ween the c=--oun s, <br /> we b ,Ueve that HFA Me-hod 3250 is the most.-effabie,readily avai abie grocaod- a ee <br /> iaimrator'es- Comnie^tion of=T;csed smdies an anaivdc l prccad=es for oxyrgw e <br /> comcounds by the Lawrence Uver:nore Niaticnai Laboramr:r, =de:==c--to ``te State <br /> Wa Resot cs Cor=i Board shouid provide additional at-idance by early 598_ <br /> 'ed?ever owduan :fi,m,miry afdrerm^ea't-weer remroea.and <br /> aawe•lees avaer ailaoaan mrd y'ic r jm•the bagdt of, ¢ma jj4 �om2mc <br />