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V1 Chesney Consulting <br />March 9, 2022�� <br />FAV <br />FOR: Mr. Dylan Goodwin AfeV <br />893 Clearwater Creek Blvd. _ AR l y 20 <br />Manteca, CA 95336 �� ��` ON 22 <br />209-923-2996 /t? /Sv), <br />PROJECT: Proposed Single Family Residence (SFR) S <br />10416 East Southland Road <br />APN 208-070-28, 3.00 Acres <br />Manteca, CA 95336 <br />SUBJECT: Percolation Testing Report for an Onsite Wastewater Treatment System <br />Effluent Disposal. Project Number ST -5.22 <br />INTRODUCTION <br />Chesney Consulting has been retained by Mr. Dylan Goodwin to conduct soil permeability (percolation) <br />testing at the above -referenced project site. The purpose of this testing was based on the requirement by <br />the San Joaquin County Environmental Health Department (EHD) due to the fact that an SFR had never <br />been built on the subject Parcel. Testing was conducted to determine the permeability of the underlying <br />soils in the proposed location of effluent disposal from the Onsite Wastewater Treatment System (OWTS) <br />for Mr. Goodwin's proposed new house. Additionally, information from the percolation test results has <br />been correlated with the effluent disposal volume the receiving soils can manage. The test location was <br />determined by Mr. Goodwin as the project owner and is illustrated on the Percolation Test Rate Data Sheet <br />under "Location of Test Holes." The new domestic well for this project has not been installed as of the <br />date of this report. There is a domestic well in the northwest corner of the property that is proposed to <br />undergo well destruction under EHD permit and requirements. A South San Joaquin Irrigation District <br />(SSJID) concrete irrigation line that traversed the Parcel was removed on March 6, 2022. There are no <br />other improvements made to the property as of the date of this Report. <br />MATERIALS AND METHODS <br />On March 6, 2022, testing began by hand drilling a 40 -inch deep test boring which represents permeability <br />at typical leachline depth. The sidewalls of this test boring were not scarified since the soil is a silty <br />sand/sandy silt material. <br />The boring was sleeved with 3" slotted PVC pipe to mitigate a potential cave-in and as the reference <br />measuring point. Two inches of gravel was placed at the bottom of the test boring to prevent scour. <br />The boring was pre -saturated with 12" of water approximately 24 hrs prior to testing. On March 7, 2022, <br />percolation testing commenced. An electronic water level meter was used to measure the water drop every <br />30 minutes over a four-hour test period. The testing was observed by Aaron Gooderham, REHS, EHD <br />sanitarian. <br />RESULTS AND DISCUSSION <br />The attached Percolation Test Rate Document illustrates the test results obtained in the field. The <br />following Table summarizes the test results from the percolation test. <br />Page 1 of 2 <br />P.O. Box 3794 ❑ Turlock, CA 95381 ❑ 209.402.1652 <br />❑ ddchesney(a charter.net <br />