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Soil Suitability and Nitrate Loading Evaluation-Update-2 Page 7 of 18 <br /> Great Pacific Nut—Nut Processing Facility Expansion <br /> 3501 Lehman Road, Tracy, California <br /> September 6, 2019 CTE Job#25-0710G <br /> An inspection was scheduled and percolation testing was performed on April 9, 2019 <br /> within test-hole P-IX (located at the proposed leach field). The percolation rate obtained <br /> from testing within P-IX was determined to be 480 minutes per inch (slower than the <br /> minimum required for standard designs), therefore, San Joaquin County Environmental <br /> Health Dept (SJCEHD) was notified of the failing test. Per our phone conversation with <br /> SJCEHD it was indicated that since the test had failed, we could cancel the original <br /> inspection time and reschedule the inspection for a new test at an alternate location, <br /> Based on the failing test results and conversation with SJCEHD, the percolation test <br /> inspection for P-IX was cancelled and the test hole was grout backfilled on April 9, <br /> 2019. <br /> Based on our conversations with SJCEHD an alternate proposed leach field location was <br /> planned to the east of the original location. A new percolation test hole, designated "P- <br /> I", and, a groundwater test boring designated `B-GW" were drilled at the new leach field <br /> location on April 24, 2019. The percolation test hole "P-1" was drilled to 38 inches begs <br /> and the groundwater boring `B-GW" was drilled to 25.Of ft to assess groundwater level <br /> in the vicinity of the proposed leach field. Upon completion of drilling a slotted drain <br /> pipe and gravel were installed in the percolation test hole "P-1"to prevent caving and the <br /> test hole was capped. <br /> Testing of percolation test"P-1" had to be postponed several times owing to heavy rains, <br /> problems with access due to soft/wet ground and conflicts in our scheduling. During the <br /> time the test was postponed, the slotted drain pipe was left in place and the hole was <br /> capped to protect it until testing occurred. Testing of percolation test hole "P-1" was <br /> performed and inspected by SJCEHD on July 19, 2019. <br /> SACRAMENTO • FREMONT • MODESTO <br /> INSPECTION&TESTING•GEOTECHMCAL•ENVIRONMENTAL•CONSTRUCTION ENGINEERING <br />