Laserfiche WebLink
CALIFORNIA REGION`.WATER QUALITY CONTROL BOARD Cal/EP <br /> CENTRAL VALLEY RAftWON <br /> 3443 Romer Raas,Szrite A <br /> `- -tea;• Sa==c=,C-k 95827-3098 _ <br /> ?hone(916) 255-3000 <br /> F.AX(916)255-3015 WUMM6 eoverrar <br /> 18 July 1997 - <br /> To Whom It May Concern <br /> ANALYSIS REQU= FOR OXYGENATE COMPOUNDS USED IN C-A=ORI LA. <br /> GASOLLN-E - EPA T-v=OD 8260 <br /> At a recent mee+.ng at the Deaart"nent of Health Services in BeTJcejey,the statewide analydcal <br /> methods committee for establishing analytical TI'H and additive standards,was info=ed that <br /> oxygenate comrounds, other than MTBE,have been and are bean;added to California <br /> gasoline which may constitute a threat to groundwaters. The list incudes,in order of <br /> ana lytica.1 ide-*rtiacaticn: <br /> 1. Methanol <br /> 2_ Ethanol <br /> 3. TeY�.ary Butanol <br /> 1. tiiTBE <br /> 5. Di-isopropyi ether (DIFF) - <br /> 6. Ethyl Tertiary Butyl Ether(E T BE) <br /> 7. Teary Amvi Methvi Ethez,(TAM ) <br /> Tine Erst three are alcohols and the later four are ether"o"r. ounds. Ethanol has be°n used for <br /> several years in Caliiorrda- W : E, as you know,bas bei used as an octane enhance-additive <br /> since the late 1970s and is now used at a higher percentage as an oxygenate in gasolft e. Since <br /> 1995, TA,1E,manufactured by Cmvmn,has been added-bo California fuels. OIPE has been <br /> used on the East Coas4 butze_-tdy has be---i found in Souti=i C-adfiornia mound water(May <br /> 1997). To date,we have no infornlaiionregarding the use of=in California. <br /> The introduction of these additives present analytical problems for laboratories because of the <br /> number or analyses refired and mal * nem- For;rs�,TA 1�is difficult to <br /> distinguish because it co-elutes with benze_-m in the EPA-8020 analytical method commonly <br /> used today. Therefore,the analytical methods conn n;ttea concurred that EPA-8260 is required <br /> to dete-amine which compound has been used- This analytical method wuZ lucidly increase the <br /> cost of sample analysis:but,until anod - e analytical method is developed that <br /> can dis g—ui --i between the compourzcs,HFA 8250 is the single,provisional method of <br /> analysis for these compounds. <br /> Tlhis problem is fvrrher compounded because dee oil-iinermAs sruo a soime around the state <br /> and then trade gasoline between�oagaphic ams. For insttance,it gasoline s needed-in""he <br /> San Francisco Bay area by She-17,Snell will obtain some gasoline iioaz,say, 0-u-n-ron in the Bay <br /> area and, in exchange, Cr,--ron wM rive some S'neilgesodne in South=California- The <br /> �el��?sser Ow mi=re it w a crane mrd av m=the quality ajCslirwma—'r-Acma-reazw=and <br /> an%"rhmr;mva zffocza rr and AD'T=m nw jor rhe casqu ori am i umme gar� <br />