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WASTE DISCHARGE REQUIREMENTS -9- <br /> JOHNS-MANVILLE MANUFACTURING COMPANY, INCORPORATED <br /> FORMOSA PLASTICS, USA <br /> SAN JOAQUIN COUNTY <br /> 3. Each landfill or disposal area shall receive a final cover which is designed and <br /> constructed to function with minimum maintenance and consists, at a minimum, of a <br /> thee `ifoot thick soil layer which may not contain any asbestos waste materials. <br /> 4. Vegetation shall be planted and maintained over each closed landfill unit. Vegetation <br /> shall be selected to require a minimum of irrigation and maintenance and shall have <br /> a rooting depth not in excess of the cover thickness. <br /> 5. Closed landfill modules shall be graded to at least a dHee 0e" percent grade and <br /> maintained to prevent ponding. <br /> 6. Areas with slopes greater than ten percent, surface drainage courses, and areas <br /> subject to erosion by wind or water shall be designed and constructed to prevent such <br /> erosion. <br /> SURFACE RVIPOUNDMEENT CLOS ' ,..,Jgffl ,1 T3 <br /> 7. , <br /> oaf after <br /> J___A leftdfill ptffsttam to the above listed <br /> . ......::':� is�.`::f::i:-�': :C:::is v::iti:�::i:::�:'.:i::i::::::i::i::i::ii '�::�iii�:,jj}j;i••:i::i::i::i::isf::i::isi{:?{j:;:{;ii: :': ;:j:ii:;i::iti:::i:::i:::i::i::i::::i::i:�:f::::::i::i::ii'v}:i;:jji:Y.:2 <br /> iso......r...:.: :...:.:..:..:.: x d <br /> . ::. <br /> .:::::::::::::::::::. `#�.....:..... <br /> t €aerie >:.<;{ t :«.: ` :.:::<:>>:>::>:><: >::>;::>::::>:>: .<::>:>;''`'` `> <br /> Y :.;:.;;:�:.;:.........::.:. m t <br /> s <br /> .3 di, Alternatively, if the Discharger leaves the existing wastes in place, <br /> then the surface impoundments shall be closed as landfills pursuant to the above- <br /> listed Landfill Closure Specifications. <br /> >dx> ;::>::>::;is.::: >a: „} :::<::: ............,d<,,,::>f>th:>::;;6>:<st<.<> <: :fi:><;®:;;;tA,6;r< ><::<; :>:><' p:`: »:<:;::: 4:y<i<.>:.;:: [`>x` :'t '.'' <br /> . w loaue 6f tl�: UiEWly .[J4lt }�1 0.cti� ke7 .p ,.Li,�,:y `7 ;a,.:.`,:.:V ;.Aai1F `.. w ` <br /> ..... ... <br /> D. Provisions: <br /> 1. The Discharger shall, in a timely manner, remove and relocate any wastes dis- <br /> charged at this facility in violation of this Order. <br />