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J. H . KLEI N FELDER & ASSOCIATES <br /> GEOTECHNICAL CONSULTANTS • MATERIALS TESTING <br /> LAND & WATER RESOURCES <br /> 2825 EAST MYRTLE STREET <br /> STOCKTON. CA 95205-4794 <br /> (209)948-1345 File No. 20-2568-01ND <br /> June 19, 1987 <br /> Jorgenson Walker, Inc. I "r'` �` ��T►I,a�; <br /> 22496 Tinnin Road . ° <br /> Manteca, CA 95336 <br /> 23 <br /> Subject: PERCOLATION TEST <br /> PROPERTY OFF HAYSENV�Rp�E!v <br /> SAN JOAQUINOCATED COUNTY, CA/MS 87 36AD FERA,11r/SERVj�ESL7H <br /> Dear Mr. Walker: <br /> As requested on June 3, 1987, a representative of our firm performed a per- <br /> colation test at the subject site. In addition, a soil profile boring was <br /> drilled adjacent to the percolation test hole. The approximate locations at <br /> which the percolation test and soil profile boring were performed are shown on <br /> the attached site sketch. <br /> The soil profile boring was drilled on June 17, 1987, using a truck-mounted <br /> drill rig with continuous flight auger. The test boring extended to a depth of <br /> approximately 10 feet below existing ground surface. The Log of Test Boring is <br /> attached to this letter. <br /> The percolation test hole was drilled and set-up on June 17, 1987, by a <br /> representative of our firm. An approximate 36-inch deep boring was drilled and <br /> 4-inch inside diameter slotted PVC pipe was inserted into the boring. The test <br /> hole was then filled to the surface with relatively clean water and left to soak <br /> overnight. <br /> The following day, June 18, 1987, a representative of our firm returned to <br /> the site to perform the percolation test. The test was performed according to <br /> San Joaquin County guidelines and the last 30 minutes was Arobserved by a County <br /> Health Sanitarian. The percolation rate was imeasu'red at 40 minutes per Bich. <br /> The county approved test sheet is attached to this letter. <br /> We trust this letter presents the information requested at this time. If <br /> you have any questions regarding this project, please contact us. <br /> Respectfully submitted, <br /> J. H. KLEINFELDER & ASSOCIATES <br /> Ron Heinzen, C. E. <br /> SRD:rls <br /> MD48/Attachments (3) <br /> cc w/Attach.: San Joaquin Local Health District/Schack do Quartaroli <br /> OTHER OFFICES <br /> Walnut Creek•Sunnvvale•San Ramon•Sacramento•Fresno•Fairfield•Rohnert Park•Merced•Los Angeles 0 Reno 0 Las Vegas 0 St.George,Utah Denver <br />