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.zv� 50 MY FEB 2 6 2002 Febi uai y 22 2002 ENVII-eNMEN`I- HEALTH PEK,,,,1/SERVICES Mi Lupe Anaya 17883 Aii poi t Way Manteca, CA 95337 SUBJECT INSTALLATION OF A DOMESTIC WELLHEAD TREATMENT SYSTEM, ANAYA PROPERTY 17883 AIRPORT WAY, MANTECA, CA In reference to- Frank's One Stop 2072 West Yosemite Avenue Manteca California J[XTROIZU CTI10-N On October 23, 2001 , the San Joaquin County Public Health Seivices Enviionmental Health Division (PHS/EHD) sent you a letter stating that a domestic wellhead ti eatinent system �z ould be installed on yo ui pe open ty's well by Aqua Science Engineei s (ASE) as a moi e p e e in a n e n t solution to providing MTBE-free water to the house's plumbing system A copy of this letter is included as Appendix A WELLHEAD Dozing the last week of January 2002, ASE installed a wellhead treatment system on the well located at 17883 Anpoit Way to ieinediate low MTBE concentrations previously identified in that well Thi,, well supplies water to the residents at the property The wellhead treatment system const,,ts of the existing A ell pump a n d holding tank, which is then plumbed to two 250 pound granulated activated carbon (GAC) canisters piped in series Untreated water is removed from the well and stored in the existing holding tank Untreated water leaves the holding tank and enters the GAC canisters prior to entering the plumbing system for the t eszdences on the property Each o t the GAC canisteis is filled with 250 pounds of virgin 1200 mesh activated • carbon The activated carbon is used as a media for the MTBE molecules to adsorb onto Watei leaving the canisters is then free of MTBE At the point in tune when the activated carbon can no longer adsorb the MTBE molecules, MTBE will be found in the water stream between the first and 0,F L%onvlllP C ci 0117;c Q4-)26 82091Qi o lr,, ;' 93/-