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� <br />� <br />.k� ,, , � � I <br />' / <br />, �� <br />� � . j <br />�� � �� , �, <br />�� �,�t, <br />� `, ,� �,.'-;�s>-�- ,, r--� i I <br />i� �—� '�-�_.._ � � __.A�v "_ r . � � � <br />1 + » µV � I <br />1 .1 �.�n� � ..� I Mt . � <br />��1� �J � �ag—� —� ��.�.�. \ `. � I � \\.' r_ . �". <br />� y41 �. \�• ...._ 1� 1� ���b, I 1 <br />6� J i� <br />��v ' � i � -`a..�. �A�. `d I � I <br />�...... �• ' t. � - <br />.. f.�.�—_ <br />ih - - i � � I I `� `„�—�.__ il � <br />�� II �_ ' , 1 .„T"�_'` <br />4..e�--.. __.._ _ _. 1' ! <br />_l <br />:.;, � l ; _ - � �� <br />� `�� '-.-_--�! <br />� / , ''� <br />, <�_�� � � � ,� -�_ : ' , I <br />' .. f.J ^ ! / I� <br />`\ �—��.�z��' �--�� �J <br />Pigurc 3- Dccclnpcd Sub-b:uin and Drain:��c D1ap <br />DOWNSTREAM ANALYSIS <br />The project site consists of a single basin that drains to Kasch Park Bog, a portion of <br />which occupies the western half of the site. Flooding problems have been identified <br />southwest of the site at the outlet of the bog. <br />There will be no noticeable difference in hydrology as measured at the edge of the <br />wetland. The vast majority of the runoff from the deveioped site will be dispersed by <br />evapotranspiration and infiltration, wi;h only minor amounts developing as surface <br />runoff. <br />EXISTING SITE SUMMARY <br />The terrain on the site siopes westerly resulting in only one basin on the site. The table <br />below provides iniormation on runoff from the full area of the developed site. <br />[3ASIN 10: Exo(]2 <br />�f3UH METHOOOLOGY <br />TOTAL AfiEA.......: <br />RNNFALL TYPL...: <br />PPECIPITATION....: <br />TIUE INT[RVAL....: <br />NAME: EKistinp 2-yc�r <br />1.88 Acrc, DASEFLOYIS: 0.00 cfs <br />TYPEfA PERV [MP <br />1.40 inc�e; AREA..: 1.82 Acres 0.06 Acres <br />10.00 min CN....: 7�.00 98.00 <br />TC....: 48.60 min 15.00 min <br />n�STRACTION COEFF: 0.20 <br />TCReach � Shaet L: �00.00 ns:0.2400 p2yr: 1.fi0 s:0.0200 <br />PEAK HATE: 0.02 cfc VOL: 0.02 Ao-fc TIME: 1320 min <br />r-IEARTHSTONE LANE 6 DRAINAGE REPOR7 <br />APRIL 2006 <br />