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<br />EROSIVE SLUMPING (SHORT TERM PROCESS A) <br />PEAT DECOMPOSTION SCALE: <br />1= RAW PlANT ROafS. MOSSES. ETC. <br />10= BLACK OOZE <br />"from5llnd1VenJ,PhD. 1. EXISTING CONDmONS <br /> <br />ROOT MAT <br />Peat Scale 1-4. <br /> <br /> <br />SEDIMENT HAS ACCUMULATED IN THE DITCH, REDUCING PERFORMANCE. <br /> <br />2. SEDIMENT REMOVAL <br /> <br />ROOT MAT <br />Peat Scale 1-4 <br /> <br /> <br />SEDIMENT REMOVAL AND DIGGING THE DITCH DEEPER EXPOSES PEAT B8..0W 1lfE <br />PROTECTED ROOT ZONE. <br /> <br />3. UNDERMINING <br /> <br />ROOT MAT <br />Peat Scale 1-4 <br /> <br /> <br />UNSUPPORTED PEAT BELOW THE ROOT ZONE STAIUS TO SINK INTO THE DITCH <br />BOTTOM - UNDERMINING SIDE BANKS. T1MEFRAME ON 1liE ORDER OF 1lV=-. <br />WEEKS TO MONTHS. ~. <br />