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WA <br />ASSOCIATED <br />ENGINEERING <br />GROUP <br />TRANSMITTAL LETTER <br />TO: Steven Shih FROM: <br />San Joaquin County EHD DATE: <br />1868 E. Hazelton Avenue JOB NUMBER: <br />Stockton, CA 95205 <br />(209)468-9850 <br />SUBJECT: Onsite Wastewater Treatment System Design and Plans —Cho Residence <br />Ryan Carrell <br />10/24/2018 <br />1275-18 <br />❑ ORIGINALS ❑ MAIL DELIVERY ❑ FOR APPROVAL <br />❑ COPIES ❑ OVERNIGHT DELIVERY ❑x FOR REVIEW & COMMENT <br />Mx PLANS ❑x HAND DELIVERY ❑ FOR YOUR USE <br />❑ OTHER ❑ FAX ❑ AS REQUESTED <br />QUANTITY: DATE: DESCRIPTION: <br />2 10/24/18 Onsite Wastewater Treatment System Design and Plans <br />1 10/24/18 SERVICE REQUEST Application and Fee Payment (Check No. 3192, $304.00) <br />1 - Norweco Treatment System — Supporting Information <br />COMMENTS: <br />Mr. Shih <br />Enclosed please find the plan and supporting information for the above referenced residential wastewater treatment system <br />installation. <br />As we discussed at the counter this morning with Michael, I feel that the Section 7 provisions of the County's OWTS Design <br />Requirements should not strictly apply to this residential installation since we are adhering to the Section 9 sizing requirements for <br />residential installations. The soil type identified in the Terracon report (on file with EHD) coincides with the Table 9.7.1 "Disposal <br />Field Requirements" for residential installations. Section 7 appears to be more suitable for package plants with higher flow rates <br />where percolation rates would govern the sizing of the disposal system. Flow rates for this project, and the corresponding filter bed <br />sizing, are independent of the treatment measure employed upstream of the disposal field. We are respectfully requesting that <br />supplemental percolation testing be waived for this residential installation. <br />Please let me know if you have any questions as you review this submittal. <br />Ryan Carrel <br />Civil Engineer <br />4206 TECHNOLOGY DRIVE, SUITE 4, MODESTO, CA 95356 • PHONE: (209) 545-3390 • FAX: (209) 545-3875 • www.assoceng.com <br />