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MEMORANDUM CALIFORNIh REGIONAL WATER. QUALITY CONTROL BOARD -- CENTF-AL VALLEY REGION 3443 Rout ec Road Phone: (916) 361-5600 Sacramento, CA 95827-3098 ATSS: 8-495-5600 r • GARY REENTS FROM. T ILA 1,ECLE ,r_'-,J( Senior Enginee Area Engine•vr OA7'ES 22 February 1989 SIGNATURE: ..c _ SUBJECT: US Gasohol Corporation United States Gasohol Corporation, 12470 E. Locke Rd. , Lockefo,rd, is under Wastes Discharge -Requirements, Ord':er No. 80-11P O,: to prcdlice ethyl alcohol from molasses for use in gasohol production; wastewater disposal is to land. Lockeford Winery was at this location until it was bought by US Gasohol in July 1980. Molasses was brought in from the Port of Stockton and stored in a 400, 000-gallon concrete tank until ready for use. Fermentation was started by adding yeast and enzymes to the molasses. After approximately 48 hours, the alcohol content was 110. The mixture was then moved to a 840, 000-gallon holding tank before it was. through a beer dill. After the beer still, the 90-proof raixt:.uie was 'moved to steel tanks for storage and then to an azeotropic nnil-_ to upgrade it to 190-200 proof alcohol . This alcohol was thee. & ,n with unleaded gasoline at a ,-ati.o of 5 gallons gasoline to 100 gallons alcohol. The purpc,e of the denaturing process was .:o make the alcohol undrinkable and unfit .for. human Consumption. The final product was stored in one 217, 000-gallor, tank and two ?.6 , 600-gallon tanks until it was picked up by miarke zers to be mixed with gasoline to produce gasohol. The process used 2S6 ton/dart molasses, 900ga day unleaded gasoline, and 18 gal./day (used in the a7ec ropic. unit) to produce 26, 600 gal/day ethanol product. The wastewater flow (m.inimum=0. 0(5 mgd, rnaxi-mun=0. _17 riga) --onsisted of stillacte, coaling water, and wash water. The stil.l.age: waste .rent to shallow land cheeks, and the cooling water and wash water rent to 10 evaporation/percolation ponds. Dc:restiL sewage. gent to a septic tank/Ieach:_geld system. On 26 January 1989 , 1 drove doll n to US Gasohol. for an inspection. The facility was s ;.;t down and for sale b � Califoznia. In,i;- stinerxt, Cotry��^rci�al Real '�" tats:. 1 called the agent:., Dale Tht!r. tcn i (209) 473•-2525) , whc :paid t: ,a taci.lit ha_ beer. for Sala for at least orae year. lie said US ca-schol vxe-nt b : ":pt and lie did not kkinw whon, they stopped operat-ing.