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'% <br />assume that the leach field had failed; what does the County propose next? It is not providing an alternative but <br />is rather forcing my client to incur extraordinary cost to no end. The leach field has provided many years of <br />service and on Nov 13 passed the first percolation test conducted at test hole number 3. It was the County who <br />incorrectly calculated the percolation rate and having done so, used the wrong testing procedure, resulting in a <br />failed test. Instead of solving the problem, the County blamed the unacceptable testing result on my <br />client. Please speak with the original inspector who tested the field to obtain a fair assessment of what <br />happened. <br />I look forward to a productive meeting and an expeditious resolution. <br />Alfred Martinez, PE <br />(415) 680-5351 <br />PS <br />Please forward to the correct person if you are not responsible for this department. <br />Hello Michael, <br />Enclosed is the new percolation test results performed yesterday. The test hole is located adjacent to the test <br />hole No 3 which was tested on Nov 13, 2019. <br />The Nov 13 test reported a percolation rate of 60 mpi and yesterday's test, not surprisingly, demonstrated an <br />identical rate. The same soil has now been excavated and tested twice and reveals the same rate so we are <br />hopeful that we may proceed? I think it appropriate to include the test results of both tests in the required report <br />with an explanation regarding differences. <br />It is my belief that test hole number 3 on Nov 13 passed. If the tested hole had not passed it would not have <br />resulted in 1/2 inch drop in water during the last reading (last 2.0 hours). The contractor and property owner <br />conducting the test experienced operator error just like your inspector who incorrectly calculated the test results. <br />The test procedure may have wrong, but the percolation results are identical as shown yesterday. <br />The enclosed test procedure does require tester qualifications or provide a test mechanism. <br />Please let me know how to proceed? <br />Thank you <br />Alfred <br />(415) 680-5351 <br />