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t Installation of and subsurface <oi 1 J')sorllt ior► Systen n this soil obvtou,iv would not allcw the minima recomatencled separation. The mound systan is designed for soilz \,ith rcriodic high watt rtahle. �inw- ever, the natertable must not be hlijie*r than .: feet 1-,el(.n. the ,lir`ace for the mound system to function effo,ct ivel.. Installat i!vn of any soil absorption system on this type of soil is not rm"%nended. Nessel soils, colored light green on the soils overlay. coammly have a seasonal wateftahle at a depth of ; to ') feet. If the soil mottling irtdicater that the depth of the water -table i;c .1 feet the re-zamended separation between the bottom of the seelAge- trench and the aatertable cannot he maintain►ed. In this came, installation of am subsurface F-'•s t rm is not recorT mee►ded. Ibwe% er , a mound iwstep. car faamct iean proper 1, If the: mottling indicates the: waterta ale present at the ` oot depth tnM a shallow trench system could provi.le -.leeuate treatment. The: Hayden soils colored m.•..c►m grc;en on the accampwnti•ing Overlay, offer the most potential for waste treatment. Presence of tic seal water - table is oftc i ?elos: the S foot depth. This would allok the installation of the standard subsuarf sc:e system. }bwever, in many cases theme is ev iderice of soil mottling at a l to 3 foot .depth. This fact. coupled with the presence of the most preme able , ort ions- of this soil tearer the sfff,rc-e, means that a shallow trench system %ill probably ftax:tion better than the standard system on this soil. lzhoresx;od soils, colored light red on the soil,; overlay, ccttl a - ., have a seasonal watertable at a depth of 3 to S feet. In addition, percolation rates (m these soils are often in excess of tit► minute- per inch. For t h : reason an innovative mound system �, i i I function , re ef feet ively thar either a standard system or a shallc+w qAmrface %Y%tom. In w1dition there are several arenas of Hayden soils with sloes greater than 1:' I'e` r4 ent , colored ci.. r k green arkl hro►.n on the arch i cn-ear lay. It is ►lifficuwt to constru - soil treatment systers on slope% in excess of 1W percent. These area should he avelded Shen locating they on—,ite t reratasecnt s%-4t err.. uh'llAtl- RM.*t AND %DlWXT to U&6 Minnt ton". An eras ion ior mitted irt.lic.tt ir►�. the provisions, for to the lake during `cansttan:t iopt. }n .ritics i., •j =.iia:Csr 01 plan +e2"Mlu he - p*teu trx+ ntb- e 1 im inapt ing ebro, is ►n an►° *� i ,mat ion the methoLk AtAi e! %i; irs&-1txlr use ;)I cAjthen u: Jr3-%4 I.�i� .it�►�r i•�a�, d isturbiarlt !` of A min ii!'flr are. of tlw',e l:icthDjs.