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.,., Marion County <br /> OREGON SEPTIC SYSTEM REQUIREMENTS AND FIELD NOTES <br /> PUBLIC WORKS <br /> Design Flow 450 GPD <br /> Initial System Repair System <br /> System Type:ATT Treatment Standard #1 System Type:ATT Treatment Standard #1 <br /> Field Size: 135 LF Field Size: 135 LF <br /> Size Factor: 45 LF/ 150 gal. Size Factor: 45 LF / 150 gal. <br /> Install Depth (inches) Install Depth (inches) <br /> Min 24 Max 24 Min 24 Max 24 <br /> Special Requirements <br /> Curtain Drain to 48" <br /> Notes & Landscape Features <br /> Stay on upper part of slope. Lower pits denied. <br /> Stakeout required <br /> Temporary Water Table and Space is an issue with this lot. <br /> Horse manure filled much of the location of the NW test pit and surrounding area west. <br />