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Y'y. <br /> E <br /> f <br /> PUBLIC HEALTH SERVICES <br /> SAN JOAQUIN COUNTY <br /> JOC,I KHANNA M.D.,M.P.H. <br /> Hnlih Officer <br /> P.O.Box 2049 (164!Eau Hatdton Avenue) • Stockton,Cali(a-nia 95201 <br /> (209)468-3400 <br /> APR 3 1991 ' <br /> DOC RAYMOND COPY <br /> RAYMOND INVESTMENT CORPORATION <br /> P 0 BOX 567 <br /> STOCKTON CA 95203 <br /> RE: Pony Express Courier Corp. IN REPLY REFER TO SITE CODE: 1690 <br /> 959 Moffat <br /> Manteca CA 95336 <br /> REVIEW COMPLETED OF: Work Plan dated February 8, 1991 <br /> RE14ARKS: <br /> 1. The slotted PVC casing should extend above first water and the <br /> sand pack should extend above the slotted casing. <br /> 2. The monitoring wells should be provided with water tight caps. I <br /> T 3. Soil and water samplesmust be delivered to a Department of <br /> Health Services certified hazardous materials. testing <br /> laboratory for analysis using methods listed in the 'Tri- <br /> Regional Board Staff Recommendations% The laboratory should <br /> be able to achieve the detection limits listed in the LUFT x <br /> Manual for TPH-G and BTEX. ; <br /> 4: The.'monitoringwells are to be properly developed and purged <br /> before . sampling. Before collecting a water sample <br /> temperature, conductivity, and pH should be measured and <br /> r , measurements should indicate that they have stabilized. . <br /> JW; If you have any questions contact Margaret Lagorio, Senior REHS, of <br /> 4 my staff at (209)468-3449. <br /> Sogi Khann , M.D. , M.P.H. <br /> Health 0 icer <br /> 7 <br /> rie.A.-Ca Ulla; RENS, Program Manager <br /> vironmental Health Division <br /> LAC/ML:nr <br /> ' ---.-----%,,C:----William._S.._-Hunter--and.._Associates-- <br /> - — <br /> k 2701 Cottage Way, Ste 25 -- ---- - -- - --- <br /> Sacramento, Ca 95825 <br /> rf RECEIVED APR 4 1991 <br /> z <br /> A Division of Son Joaquin County Health Ure Services <br /> � f1 \ <br />