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1 �p�_.K�� u. <br /> . .__ . . . . <br /> ` t.A.. <br /> �ip' <br /> �"iC'i� <br /> . . �� $ � '�y .. <br /> � r�'t .�! . . . <br /> <� f S^ <br /> q::, ��,� ,, <br /> ia� °�. <br />� <br />^�t, � �" ;�' K: <br /> p �s ,a� ������������k x <br /> r ' ��g <br /> 'ter.�'� `'�' .`��! � 4-�'�� � "� �;* � �, . <br /> r �r r v�.�'C'� � ,�1� � . � '4 , <br /> �'<.:., -.. � -..y� r Y��� .. X a f <br />��# ' I �����5�i�c�1'`k►! r�rr��x�M y�fj <br /> o- y� ; <br /> s,� � >�`� �`iGy4��i�[.�!' a 4 f^- �'� '� .`�+�``g�`a . <br /> �. ��', : x � � <br /> . �e�„x � ,�.�r� � . <br /> iH.. t�`., � t <br /> � � ?X�y ` '�.<�� w�� ��; }� � <br /> � �� �4�• <br />�i' __ , ' �' 'r . � . �� . <br /> -- -� '� �ufficient) . �t' '�rioul+�' �� � g t� �� � .,. <br /> = ��.�;;.ar�d ,atake out before� cc�n�t�utc � � �ta�����: ' <br /> .Y Ba�ed on the proposecl el�vatf����! `p►��bet�n di� �� <br /> boxes, it appears that the 977 ft. contour would coinaic�e <br /> with the final grade of the eleventh (ilth) trer..ch, <br /> countinq from the east boundary of the drainfield. � It <br /> appears that the 976 ft. contour should similarly coincide <br /> with the twentieth (20th) trench, and it should also be <br /> represented on the plans dnd staked out before conatruction <br /> as such. (Theae qrades iqnore the 6 inches of topsoil <br /> mounded ovAr the trenches to allow for settlement of thw <br /> soill . <br /> 3. A note should be added to the effect that the drainfield <br /> should not be qraded after trench construction. To ansure <br /> natural settlement of the soil over the trenchea, <br /> mech�nical c�mpaction by any means should not be allowed <br /> efter backfillinq. <br /> 4. The apecification in Section A-A for crushed rock should b� <br /> chanqed to 3/4" minimum. (Reference the definition of <br /> filter material in the rndividual Sewaqe Treatment Sy�te�as <br /> Standards, 6 MCAR 4. 80�0 Sect. 8. 16) . Also, it �rould ba a <br /> qood idea to note in Sectioa A-A of the plans that the : <br /> trench bottoms should be level and that the aofl aepar�tion <br /> material should be a minimum of 2" of hay or atraw and/or <br /> untreated bufldfnq paper. . <br /> 5. In the septic tank details, the depth of cover over the <br /> manhole should be specified (6 to 12 inches) � and the <br /> clean-out pipe should be centered over the baffle opening <br /> to allow for operation and maintenance inspectiona. xn ita <br /> Fresent position, the pipe could be used for tank <br /> clean-out, however, the quality of effluent flowing out of <br /> the tank to the drainfield could not be monitored. <br /> Fur�?:�r correspondence reqarding this project 3s not necessary <br /> unless you have specific questions or problems you would like to . <br /> discuss. Otherwise, you may use our comments as you see fitf of <br />