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"IJEEPT DELI t!F',' TEL h; ii '' ��-';�E-��' '' 1 C t <br /> c r.11 J whiCh 1S "tin extension of an existing 24 in. diameter culvert <br /> Ott tt:� cul—vQ °t The a1ditiunal. cul%rcrts, of course , wo�sld not: have <br /> ; listal led pr-ior to appr-oval cif the elan, and the map TT -B-App. <br /> �.rti 4 2 these as ''proposed culverts. " <br /> t-)f the P- tual can--tne--ground conditions, wo believe that. the <br /> slioold be changed, rather than the culverts installed. <br /> Pages to t'r�e Haul 1�(,)ad design, indicating that these <br /> ha: c not been installed, have been pr:�-pared; a notation <br /> ha:4 :_oe, added to Trap I!-L-- App. 7-Att. 2 indicating that the <br /> culverts have not been Installed, and indicating the <br /> dot,? of this rpv3sic,•i. Whose are included as Attachment 1 . <br /> of the road in wnioh c,:41 vert C -1N would have to be <br /> Js shalt! bi3droak. To iristall a culvert at this location <br /> wou!O req%4 re blastitzq out fr.rrt the read itself , which in and <br /> of i :eelf would create furthpr sediment. The flow of water, from <br /> the rul- hrt wc.uld t1len empty out on a steep slope of soft and <br /> 1�o-�=i ve shale soi_ ts. rah o le the desiari does call for placement of <br /> rip rop beneath the culvert , the concentrated flow Ctcwn a steep <br /> s'i ope of soft shale Wou-e likely prove erosive. and contribute <br /> setaimej:t , rather tha,,L di.inis'h or Control it. <br /> Map TT- B App, 7 Att. 2 prclposes to ',construct- convoyance ditch <br /> ;Je:ween, .~ulvertsll -7 r 24" culvert at Station 7-39-�20] and C-214 [ lglt <br /> culvert at station 1.36+001 . Lew Tho npsor+, Mid-Continent's <br /> envl_rc-nmantal coca,.mate}r, investigated the site, iijvestigat(,-d the <br /> p;,opdsed fcr the. prop(,);, .ei culvert and ditch, and finds that <br /> the l-oad Ht this point Ls cut into bedrock, making excavation of a <br /> ditch, and the installation of a culvert, infeasik)le as it would <br /> regiiire extensive blasting of the road. <br /> At this site as well , we are concerned that installation of another <br /> culvert would tend to create erosion downslope due to soft soil and <br /> st.�!e p slope. <br /> Yours truly, <br /> Diane Delaney <br /> Mid-Continent roes -� <br /> Mid--Continent Resources TR-22 <br /> 10/91 <br />