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• <br /> Page 1 of 1 <br /> Robert Goodwin - 16407 Emerald Green Ln SE 555-21-009752 <br /> From: Robert Goodwin <br /> To: caseylundberg@live.com <br /> Date: 12/14/2021 9:57 AM <br /> Subject: 16407 Emerald Green Ln SE 555-21-009752 <br /> Attachments: pump calcs guide.pdf;table 1.pdf <br /> Good morning Casey and Jeremy, <br /> The County Surveyor reviewed your proposed easement and determined that no easement is required, as <br /> the two tax lots appear to be one parcel. Before I can issue the permit,the following changes need to be <br /> made to the site plan/materials: <br /> 1. The norwesco tanks proposed have a limited approval from the DEQ.They are not approved for the soil <br /> conditions (very high water table)found in the lower part of the site where the tanks are proposed. Please <br /> propose a different tank manufacturer/model. I would speak with your supplier for alternatives, a complete <br /> list of approved tanks can be found here: https://www.oregon.gov/deq/Residential/Pages/Onsite-Approved- <br /> Tanks.aspx <br /> Of tanks I am familiar with, Infiltrator makes tanks that could be used at this site with concrete deadmen but <br /> there may be more, please do not take this as a recommendation of any product. <br /> 2. The pressure effluent line appears to be proposed to pass under the foundation of the home.A 5' <br /> minimum setback from the foundation is required, please revise to meet this setback. If the line needs to be <br /> run under the driveway, it will need to be sleeved with a large diameter pipe. OAR 340-071-0220(1) is where <br /> this requirement can be found,see attached table. <br /> 3. Please provide head loss calculations to demonstrate the pump proposed is adequate. I ran some quick <br /> calculations myself and the head loss comes out in the upper limits of the pumps operable range (-60 feet <br /> of head or more, depending on fittings used). I am attaching a guide to completing these calculations <br /> manually,there are also online softwares for pump calculations. <br /> Please let me know if you have any questions. <br /> Thanks, <br /> Robert Goodwin, REHS <br /> Onsite Wastewater Specialist <br /> Marion County Public Works <br /> PT5G3=566-3g90 <br /> E) Rgoodwin@co.marion.or.us <br /> file:///C:/Users/Rgoodwin/AppData/Local/Temp/XPgrpwise/61 B 86A99GWM4M-MCP... 12/14/2021 <br />