MARCH 18, 1992 - Laserfiche WebLink

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~)nlv TllgSe Slalemenls Below Thai Have Been Marked Are To Be Considered For This Soils Invesllaalloq, The Olhor Slalemenls Are To Bo Disreaarded Because They Do Nol Apply, ( ) This silo may be considered Iora subsurface Irench absorplion field syslem. The trench bollom musl bo ill least 24 inches above any layer wilh a loading rale of less lhan 0.25 gpd/sq. II. or grealer than 1.2 gpd/sq, fl. II lbo design daily flow" is less than 450 gallons, or il the french bollom Is al Ioas130 inches above any layer will] a loading rule el loss titan 0.25 gpd/sq. I1., a gravily flow Irickle Iced syslem may bo conslruclod. II Ihe design daily flow is equal Io or groaler lhan 450 gallons and if Ihe Irench bollom is wilhin 30 inches et a layer will.] a loading rule el 0.25 gpd/sq. I1., Ihen a melhod of (losing, such as pump assisled dislribulion or allernaling fields musl be used because et lhe proximily of Ihe lrench bollom Io this layer. Any absorplion field designed with a Iolal trench lenglh el more Ihan 500 lineal feel must ulilize pump assisled dislribulion In order lo enhance dislribulion of Ihe ellluenl. If Ihe Irench bollom is wilhin 24 inches el a layer wJlh a loading rule et 1.2 gpd/sq. I1., then pressure dislribulion musl be used. Doplh Io layer wilh a loading rule o! less Ihan 0.25 gpd/sq, fl.: Deplh Io layer wilh a loading rule et more Ihan 1.2 gpd/sq, fl.: Doplh to layer with a loading rate of 1.2 gpd/sq. (~en~ 'lLlhe seasonal hiah waler fable can be lowered Io a deph el al leas 34 nches below Ihe surface, Ihis silo may bo considered Iora subsurface lrench absorplion lield syslem. The Irench bollom must be at I.~esl 24 inches above lhe seasonal high water fable allot inslallalion ol Ihe drainage syslem, The lronch bollom must also be ~ql leasl 24 inches above any layer wilh a loading rule el less lhan 0,25 gpd/sq. II. or groalor lhan 1.2 gpd/sq. II. II lbo design daily Ilow' is less Ihan 450 gallons, or il Ihe Irench bollom is al leas130 incl.]os above any layer wilh a loading rule less Iban 0.25 gpd/sq. I1., Ihen a gravily flow Irickle feed syslem may be conslrucled. II Ihe design daily flow is equal lo or greater lhan 450 gallons, and il lhe Irench bollom is wilhin 30 inches el a layer wilh a loading rate el 0,25 gpd/sq. I1,, then a melhod el dosing, such as pomp assisled dislribulion or allernaling fields musl be used because el the proximily of Ihe Irench bollom Io Ibis layer. Any absorplion field designed wilh a Iolal Irench lenglh el more Ihan 500 lineal feel must be dosed using pump assisled dislribulion in order to enhance dislribulion of Ihe effluenl. If Ironch bollom Is will'Jin 24 incl']es of a layer wilh a loading rale el 1.2 gpd/sq, fl., Iben pressure disldbulion musl be used, Deplh Io layer wilh a loading rate of less Ihan 0.25 gpd/sq, fl,: Deplh Io layer wilh a loading rule of more than 1.2 gpd/sq, fl,: Deplh Io layer with a loading rule of 1.2 gpd/sq. Il.: ( ) Tho poor filleting qualilles of Ihese sand lexlures wilhin Ihe soil profile can allow Improperly Iroaled ellluenl lo enler and conlaminale Ihe ground water unless a pressure dislribulion syslem is used, (//~) Surface diversions are required I0 remove Ihe excess surface water from lhe proposed seplic area, ( ) Subsurface drainage, perimeler drainage, and surface diversions are required to remove lhe excess surfaco and subsudace waler Item Ihe proposed septic area. ( ) This silo may be considered for an elevaled sand mou[lrl because the depth Io Ihe seasonal high waler fable and limiling layer Is greater than 20 inches, and Ihe slope is less than 6 percent. ( ) If the seasonal high waler can be lowered Io a deplh of more lhan 20 inches, this silo may bo considered Ior an elevaled sand mound, (. ) This silo Is unsuilablo for any subsudace syslem because of Ihe presence of a limiting layer wllhln 34 inches of Ihe soil surface. (_.._) This silo Is unsuited lot any on-silo sewage disposal system because ( )[Of Flooding/Ponding]; ( )[OI Position In The Landscapo (Flood Plain or Some Olher Topographic Posilion)]; ( )[OI The Presonco OI A Limiling Layer Wilhin 20 Inches OI Tho Soil Surface]; ( )[Of Slopes Grealer Than 15 Porcenl]. [A combinalion of a limiling layer wilhin 34 inches and a slope grealer Ihan 6 percenl]. An aIlernale site should be selecled, Any syslem recommendalions included in lhis repod are based on lhe slope, posilion In landscape, deplh 1o any limiling layers and soil prolile descriplion al each silo. Considerations such as Ihe size of area available, Iol conliguralions, necessary selback and separalion dislances, leasibilily of arlilicial drainage, any necessary easemenls Ior matnlen~ncn nz Ih~ nn~il~ ~zu~l~rn ~,r Iha ~,lr.t ......................