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t-1Lt :No. b83 01/29 '96 09:49 I D:f1A I N RECEPTION SAN RpMON 510 866 5681 PAGE 2 <br /> p w N <br /> - r <br /> CALTORK A REGIONAL RATER QUALITY COMMOL BOARD <br /> SAN FRANCISCO BAY REGION <br /> 2101 WE33STER Sr T, Suite 500 <br /> OAKLAND, CA 94612 <br /> Te]: . (S1G) 2915.1255 <br /> FAX; (510) 286-1390 � <br /> J■nuary 1�. 7 8p6 <br /> Ria No, 2198.17tKL.GI <br /> Responsibb Parties <br /> LOP Program Msnageris <br /> I <br /> Subject; MTBE reporting requirements. <br /> Dear Sir/Madam: <br /> i <br /> S <br /> The increasing use of Methyl Tertiary Butyl ether (MTBE) ss s component of reformulated gasoline in the Bay Area <br /> has potential groundwater quality ramifications. In light of recent studies of the environmentel impacts of MTBE. i <br /> This office has decided to require quantification for MTBE as an additional linslyte for EPA method 8020. The letter <br /> formalize*the previously informal request made In a letter dated May 2. 1885. <br /> When we made our initial request for Information, we $Mad that It was not anticipated that additional costs would <br /> be incurred by the addiction of MTBE to the list of onslytes on a standard EPA 5020 analysis. We now know that <br /> this is not correct in ail oases. There are several circumstances In which the cost of tate analyses will increase. <br /> However, we stili believe our request is appropriate and will not present an unwarranted financial burden- <br /> The Water Code speel#ies In section 13767 that Regional Boards may nquirb twjWcsf reports regarding the water <br /> quality in its region. This section also states that the cost of these reports must beer a reasonable relationship to <br /> the,needfor the report and the benefits to be obtained from the report. to light of the increase in usage of MTBE in <br /> our region, the evidence of persistence of MTBE in the anvironment,-and its possible bttpracts. we feel that the <br /> iicrossed cast of EPA method 8020 analysis for MT8E is merited when compared with the benefits to be obtained <br /> by reporting *f the analytical results. This dots will allow us to profile and baseline MTU in our mgipn and be: <br /> prepared to impiernent regulatory programs it a rational, cost effective manner should they become necessary- <br /> Please submit results quantified in parts per billion (ppbi for esch analysis performed. tA datecdon limit of 5 ppb is <br /> recommended. This request, made pursuant to section 13267 of the Water Code. Head not be submitted in a <br /> separate report, but mev tm submined along with other required marNiorina or investigation reports. <br /> If you have any questions regardinQ this matter, please contact Kevin Graves of my staff at (510I 288-O435. <br /> Sincerely, <br /> Loretta K. lEarsamlan <br /> frzmrtivs Officer <br /> I <br /> /Uphen t. Morse <br /> Chief, Toxins Division <br /> James Giannopou$os, SVAC6 <br /> 1 <br />