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.• ' � <br /> � ' � INDIVIDUAL SEWAGE TREATMENT SYSTEM WORKSHEET <br /> ��W Estimated Sewege Flows in Gellans per day <br /> A. Estimated �i S�C) gpd (gpd) <br /> � measured — x 1.5= ---- gpd um '— <br /> SEPTIC TANK VOLUME Bedrooma Ty�I Type II 'iypc III Typc <br /> B. / -- Sc�v gallons-T"�'�}�+-� —«'-,��-� � <br /> 2 300 225 180 <br /> SOILS(Site evaluation data) 3 450 300 218 � <br /> �� 4 600 375 256 °r`h` <br /> C. Depth to restricting layer=aa.'`"� 4a feet�u�� S 75o a5o 294 ""� <br /> D. Maximum depth of system C-3 ft= feet 6 900 525 332 '�rQd�. <br /> E. Percolation rate r7 , � MPI 7 los0 600 370 ,o <br /> F. Soil Siaing Factor �1 sq ft/gpd (Sce table 3) �-o A►�� 8 1200 675 408 �,.,.,� <br /> TRENCN BOTTOM AREA SeptkTink Cpp�citks,(n Rdloni <br /> H. For trenches with 6 inches of rock below the pipe: <br /> A x F= X = ft of bottom area N�^�°� Minimum Liquid Liquid ap�city with <br /> � IIedroome Capecity 6ub�ge disposd <br /> I. For trenches with l2 inches of rock below the pipe: <br /> A x F x 0.8=�x J�x 0.8=�sq ft of bottom area-�i��'.>� ��cr I 23�4' i�o i�so�o <br /> J. For trenches with 18 inches of rock below the pipe: 4 a 6 �soo zuo <br /> A x F x 0.66= x x 0.66= sq ft of bottom arca �.8«9 2000 3000 <br /> o�a 9 <br /> K. For trenches with 24 inches of rock below the pipe: <br /> AxFx0.6= x xp.6= sqftofUottomarca <br /> BED BOTTOM AREA <br /> L. For seepage beds with 6 or 12 inches of rock below the pipe; <br /> 1.5 x A x F= I.J X x = sq ft of bottom area Soll Charsetcristka and Requlred Are�a <br /> ra s�M,��.��i <br /> ROCK VOLUME IN CU FT <br /> Petcobtian Rnn in Squ��e C�llont <br /> M. Rock depth below distribution pipe plus 0.5 foot times bottom area: rw,�d �,�n so�r�.�� r«��. �e.y . <br /> M=Rock depth(ft)+6 inches x Area (H,I,J,L or K) �� a'd;°°' `q"'�� <br /> (1.0 ft+0.5 ft)x�;Q,L= q� I cu ft ._. ._._. <br /> F,.w th.�o.�• c«rte s.�a • <br /> ROCK VOLUME IN CU YDS o.�ws S�nd o.s3 �.20 <br /> N. Volume in Cu ft divided b 27 0.�ws F��..�a•• �.6� o.bo <br /> }� 6 w 15 S�ndy Lo�m OJ9 <br /> M+27=cu ds" +27= cu ds 'lG w�0_ l.o�m .6� 0.60 <br /> y � � y 31 to 45 i t .o� 0.50 <br /> ROCK WEIGHT t6 to 60 Cl�y iv�m 2.zo o.�s <br /> O. Cubic yards dmes 1.4 =tons � s���„��o••• c►,y ---• •--- <br /> Nx1.4= tons�,'Zx1.4= �' _tons <br /> DISTRIBUTION <br /> (Check one based on slo ) T <br /> � r•r•r•r r•r•r•r�r;f r•r � <br /> Bed (less than 69'o slope) •�•��~•~•�•�•�•�••,•,•�•�•~• <br /> r•r•f•r•f•r•r•r•r•r•t•l•f 2 inch Covcr <br /> .ti.ti.ti.ti.ti.ti.y '�.•,.•,.•,.q.ti. � <br /> Trenches f f.f.f.f.f.f.f.f•t•l•�•/ <br /> •ti 1 b ti•ti• •ti�'.•ti�ti••.• <br /> r'•f•1•.'• •f;f•f•t <br /> ✓ Drop boxes(any slope) .1ftirl�f�• �^��!tif'.f <br /> r•r•r• 'r�r;r•r 4 inch Pipe <br /> Distribution box(level to slightly sloping) ltit�ltif� f�f�ftr <br /> �•ti•ti•'L• ti•ti•ti•'4• <br /> TRENCH LENGTH {{;{{;{{{{, rtir�rti��r <br /> r•r•r.�•r•r•�•r•r•l�r•.'�f•'r <br /> P. Select trench width= � . �•`•`.�•'`•'`•� �•'`•�.�•�.�• �.�,� <br /> ft �•r•f•I•�''f'f•f'f'f'f'/'r'f <br /> ti.ti•ti•t•1�ti•ti.ti.ti.ti.•,.ti.ti. <br /> Divide bottom area b trench width: (H i J or K)+P= f''�f•f�r�f�l��•''''f'f'"r <br /> Q• y � � � :�f�t�ltttif~t�t�rLl�l�t�t�t <br /> lineal feet �•�•�•�•�•�•�.�•�.�.�.'..�. 6-24 inch <br /> f.t.f•f.r.r.�'•f•f•f•�'•1•r•r <br /> ti•ti•�•�•ti•ti•�'ti'�'�'ti•ti'ti• Rock Delow the P <br /> C�,+ 3 =�,�lineal feet '•:��f�f�f���f�f�r�f�f���'�f <br /> ~�~�`�`�~�~�`�`�~�~�~�~�`� l <br /> f;r•r•r•r•r•r•r•r•r•r•r�r <br /> LAWN AREA ' ~����•�•�•t•~•,•••••�•�• <br /> r•'r:r•r•r•r•r•r•r•r•r•r•r�f <br /> f~1til�t~t�l~ltr�J~t�l�l~t~/ <br /> R. Select trench spacing,center to center=�feet � <br /> S. Multiply trench spacing by lineal feet R x Q=sq ft of lawn area <br /> �x�_=1'1� sq ft <br /> LAYOUT(Use other sidc? <br /> 1.Select an appropriate scale;one square= feet. <br /> 2.Show pertinent property boundaries,right-of-way,easements. <br /> 3.Show location of housc,garagc,drivcway,and all other <br /> improvemcnts, existing or proposed <br /> 4.Show location and layaut of sew:►gc trcatmcnt systcm. <br /> 5.Show location of watcr supply wcll. <br /> G. Ulmensl�n nll srt bnrk�nn�l ycp��ri�llc►n�llalni��ry, <br />