MARCH 18, 1992 - Laserfiche WebLink

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Dnlv Those Slalemenls Delow Thai Have Been Marked Are To Be Considered For This Soils Invesllaalioq, ]'lie Olhor Slalemonls Are To De Disreaarded Decause They Do Not ADDI¥. (zz~.' This silo may be considered for a subsurlace french absorplion field syr. slem. Tle roncb bollom mhusl bo ~1~ above any layor w 1 a oading tale of loss Iban 0.2a gpd/sq, fl. or groaler Iban 1.2 gpd/sq. II. II lbo design daily Ilow' is loss Illan 450 gallons, or illbe Ironcb bollom Is al Ioas130 inches above any layer will] a loading rale el less Ihan 0.25 gpd/sq. I1., a gravily llow Irickle lead syslem may be conslrucled. If Ihe design daily flow is equal Io or grealer Ihan 450 gallons arrd il lbo Irench bollom is wilhin 30 inches of a layer will] a loading tale o! 0.25 gpd/sq. If., Ihon a method of dosing, such as purnp assislod dislribullon or allernaling fields musl be used because of Iho proximil/of Iho Irench bollom Io Ihis layer. Any absorplion lield designed will] a Iolal Ironch lenglh of more Ihan 500 lineal leal must utilize pump assisled dislribulion in older Io enhance dislribulion el lbo ellluenl, g Ihe Irench bollom is wilhin 24 inches el a layer will] a loading rale el 1.2 gpd/sq, fl., Ihen pressure dislribulion musl bo used· Doplh Io layer will] a loading ralo o! less Ihan 0.25 gpd/sq. I1.: Deplh Io layer wilh a loading tale of more Ihan 1.2 gpd/sq. I1.: Depth Io layer wilb a loading ralo of 1.2 gpd/sq. I1.: ( ) Il Ihe seasonal hiah waler labia can be lowered Io a deplb el al leas134 inches below lbo surface, Iben Ihls silo may be considered Ior a subsurface french absorplion liold syslem. "fha Irencb bollom musl bo ~l I.C~,5[ 2.'1 ir]ch~,~ above Ibc seasonal high waler labia alter Inslallalion ol Ihe drainage syslom. Tile Irench bollom rnusl also be ~ql leasl 2,1 incbo.'~ above any layer wilh a loading rale el less Ihan 0.25 gpd/sq. I1. or greater Ilran 1.2 gpd/sq. I1. II II-~e design daily Ilow' is less than 450 gallons, or il Ihe trench bollom is al leas130 inches above any layer wilb a loading tale less Ihan 0.25 gpd/sq. It., lhon a gravily flow Idckle Iced syslom may bo conslrucled. II Ihe dos gn daily ~ow s equal o or grealer Iran 450 gal OhS, a id il lbo Im icl bo om s wilbin 30 ncbos o a layer wilh a loading tale el 0.25 gpd/sq. I1., Ihen a molhod el dosing, such as pump assisled dislribulion or allernaling liolds musl be used because el lhe proximily el Ihe trench bollom Io Ihis layer. ,Any absorplion liold designed will] a Iolal Irench Ionglh el more Ihan 500 lineal leal musl be dosed using pump assisled dislribulion in order Io enhance dislribulion el Ihe ellluenl. Il Iho Imnch bollom is wilhin 24 inches o! a layer will] a loading tale el 1.2 gpd/sq. Il., Ihen pressure dishibulion musl bo used. Deplh Io layer wilh a loading rale ol less Ihan 0.25 gpd/sq. Il.: Deplh Io layer wilh a loading rale of more Ihan 1.2 gpd/sq. I1.: Deplh Io layer with a loading rate of 1.2 gpd/sq. I1.: ( ) Tho poor lilledng qualillos of those sand lexluros wllhin Ihe soil prolile can allow Improperly Iroaled ellluonl fo bnter and conlaminate Ihe ground waler unless a pressure dislribulion syslem is used. (..) Sudace diversions are required to remove Ihe excess surface waler from lbo proposed seplic area, (_ ) Subsudace drainage, perimeler drainage, and sudace diversions are required I0 remove the excess surlace and subsudace waler from Ihe proposed seplic area. ( ) This site may be considered for an elevaled sand mound because tile deplh Io the seasonal high waler labia and limiling layer Is greater Iban 20 inches, and Iho slope is less Ihan 6 percenl. (. ) If lhe seasonal high waler can be lowered to a deplh ol more Ihan 20 Inches, Ihis silo may bo considered for an elevated sand mound. (___) This silo Is ~ Ior any subsudace syslem because el Ihe presence el a limillng layer within 34 inches of Ihe soil surface. ( ) This silo Is unsuiled for any on-silo sewage disposal syslem because ( )[Of Flooding/PondingJ; ( )JOI Posillon In The Landscape (Flood Plain or Some Olher Topographic Posillon)]; ( )[OI Tire Presence el A LImiling Layer Wilhin 20 Inches Of The Soil Sudace]; ( )[Of Slopes Grealer Than 15 PercentJ. [A combination of a limiling layer wilhin 34 inches and a slope grealer Ihan 6 percenl]. An allernalo silo should be selecled. Any syslem recommendallons Included In Ihls roped are based on lbo slope, posilion In landscape, deplh Io any limiling layers and soil profile descriplion al each silo. Consideralions such as lbo size el area available, Iol conliguralions, necessary selback and separalion dislancos, feasibilily ~l adilicial drainage, any nec0ssary easements Ior main enance el tile onsil8 svslem