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-10- <br />I* • <br />M <br />' • . : jl <br />f|! <br />. j <br />k* ^ <br />'/A <br />Hit GUnooe ad Hotlails indicated tar <br />an4i« oiMriflv iMve the hidiest wtertidd <br />the Mdiui blue color on the <br />or <br />nthaw<»fc4i> 1 foot of the surface. This water nqr persist for several <br />Ai>4m the year. Installation of any subsurface ail absoiption systa <br />in ail ob^ously would not allow the ■inia ii recoBMendod soaration. <br />The systa is daipiad for ails with periodic hi|^ watertablM. <br />HoMever. the watertahle ost not be hi^ tha 2 feet below ^ surface <br />for the noiaid systa to fisictia effectively. Insta llatia of any ail <br />abeorotia systa a this ail type is not rnma wnria. <br />Areas of Oisidas and Mbnetonka ails are indicated by the light blue color <br />a the soils overlay. The axiMai height of the sa soal watertahle in <br />this aU a iniicated by the praence of notUa is usually betwea 1 and <br />S fbet. If the nottlina occurs at lea tha a 2 foot depth insta lla tion <br />of any ail absorot^ svsta is not leccafnfied. it tne nettling occurs <br />at adeptn grater tha feet a nound systa niy functia properly. <br />Nessm ails colored light grea a the ails over <br />depth <br />: rae idicatM tiiat the depth of---------------------------^ - . <br />atia betwaa tt» botta of the seepage trench and the atertable cannot <br />be ointainad. In this caa, installatia of any subsurface qrsi <br />recanaaried. However, a nound systa ca fimcUa properly. If tha <br />aottlia indicatM tha atertable present at the 5 foot depth tim a <br />could provide adequate <br />Tha Hiyda aU, colored nadia grea a the acaaqwv^ overlay ofto <br />tidble is ofta below tiie S foot depth. This would allow the installatia <br />of tiia sta nda rd subaurfaa qrsto. However, in any casa there if ^ . <br />evidena of soil aottling at a 4 to S foot depto. This fact, coupled witii <br />nreamre of tha nost nreOable portioM of this soil <br />that a <br />• • ^ <br />SborewDod ails, alored li^ rto <br />sasoal watertohle at a dapdi <br />rata a thaa ails are ofta in <br />tois reasa a inn <br />either a standard qrsta or a <br />the ails overlay, coanonly hove a <br />feet, m additia. percola tia <br />of 60 ninutos per inia ; For <br />nore effactlvely tha <br />Brin aUs indicated by the nadia red color a the soils overlay have <br />in tha siteoil. This ofta results in percolatia rataMgh clay content <br />in eoBceu <br />a ia novatia <br />cannot be installed a . _ <br />a serioa probla for the HtoTpla as presently drafted <br />For this reasa it issoils. <br />a <br />it< <br />that <br />* <br />■ <br />.-cr