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Gooderham, Aaron [EHD] From: Abby Racco <abby@logelodi.com> Sent: Friday, September 18, 2020 10:55 AM To: Kith, Michael [EHD]; Gooderham,Aaron [EHD] Subject: Perc Test Harney Attachments: CCF18092020.pdf, IMG_1311 jpg CAUTION:This email is originated from outside of the organization. Do not click links or open attachments unless you recognize the sender and know the content is safe. Hi Michael, I wanted to ask you about a perc test we performed yesterday that Aaron observed. This project is past the far eastern end of Harney Lane, a few miles from the County line. It's rocky pasture land that has never been farmed. Because of the rocks and access issues, the customer dug all the perc test holes with a 9" auger attached to a bobcat. Unfortunately, holes drilled this way are less stable than a hand-augered hole and tend to cave in. We ran this test yesterday (form attached), and had five readings of 0.05 or better, including the last reading. In the middle of the test, we did get two readings of 0.03, and one of no movement, but it's pretty clear to me that these were caused by materials sloughing off the sides of the hole. At the no movement reading, a large cobble about 3-4 inches across fell into the hole and could be seen at the bottom(see photo). Because the final reading observed by Aaron was 0.05, I'm hoping we could consider this one passed at 50 min/in. For many years that we worked on these projects,the final reading was the only one that mattered. I think the reasons for that were because the inspector was there to observe it, to give the hole time to settle, and also because these tests almost always slow over time. Let me know what you think. We couldn't reach you yesterday, so Aaron agreed not to sign the form until we hear your decision. Thank you, Abby Abby Racco Live Oak GeoEnvironmental (209) 369-0375 (209) 365-3222 cell www.logelodi.com 1