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! JL•:R�LD h. BI?l.L, :�.I.L.A. L�uidtiaipc :\rchi�cct <br /> 272J NORTH 148TH STREEI • SEATTIE.WASHINGTON 98133 • f'HONE 362�9137 <br /> � <br /> CO'�F,iRUCTICi! iJi�9'�" i'or ^torm iietention 9asin 1''evelopment, the :,uad, �'�vcrrtt. <br /> ] , Strip all existing growth off of entire retention pond� up to to� oP ban�G. <br /> Haul au�1y �Lripped material and die�iose of� iee3?ty, off' of the eite. <br /> 2. Tn e.xi�tinE stream bed, where soil is very so1't to a depth of 12 to l8 <br /> inches� :ill to sub-grade level wit!i rubbie rock or �ravrl to es!ablinh a <br /> firm suU-erade. Contractor to use inetrumente to aasure that eti•carn erade <br /> ie as level as pos�ible and retains as little water ac poasiLle. Plnce Q to <br /> 6 inch om�oth round river rocks in stream bed and on a porticn of the Uanke. <br /> ae Hhown in the drawinge. <br /> 3. ke-sLape existing bnnke to maxirnum 3 to 1 �lopes and grade all areas ae, <br /> indi�ated on the di•nwin�s. <br /> q. Install retaining rockeries at v:xiatin� inlet and outlet pipe areas. :'et <br /> rocke tight Loeether with minir�um ,jcinte� for etructurally eouna retainin3. <br /> 5. £etablieh a firm nub-grade to elope all areae tokard streem be.d as ehown on <br /> the drawinPs. The Eub-grade maat be f�rm and must not hold p��ckets of water. <br /> G. 1?xtend �xisting daylighted downepout lines to new etroem bed aith naw 4" AD" <br /> non-perfbrated lines in all areae except under crushed rock court. Yttiere <br /> lines are Installed undor court, use Q" YVC, echedule 80. Lay new drain lines <br /> directly on eloped suU-�rade, in ae r,hort rune us pueciU:e. Avoid sharp bende <br /> in linen. ':fhere joint, nnd couplinge are neceasary� use �pecially manufactured <br /> itenc� made for the purpose. <br /> �. Tnetall 1'.° �•ruehed ledge rock on sloped auh--grade, under play court and under <br /> 11wn area between court and atream. See drawings for elevatione and depth of rock. <br /> ti. Build ntep: and inetel] wood edgers for pl�y court as ehown on the drawinge. <br /> 9. 1n�ta11 new be7ch ae shown on the drawin�s. <br /> IG. !n:•tall a �" 1.�/er of ,�-�" to `�/"" cruehed ledge r��cH. nn pin�y court and roll to <br /> com;�act. ?r.e drawin��s fcr f�r �.iah gt'auc of court. .A .:,�� i�,^.'.ali a 2" layer of <br /> cruehe�i leuge rock� �„" tu '��fl" size� on top of the 1; " rook in the ar�se to be <br /> sodded br.tweeu thc ��i�y r,curc znd the At.rPam bnd. 1�`iuieh clevation of thie lqyer <br /> ot' rock ie to be 3" Uelo�•� finish grade of the aod. <br /> 11 . lnstaii a 3" J�yer of s:uiay loam topeoil on all areas to t,e sodded ano on all <br /> area, ahere r�r��und cov�r plante are to L� nt.Antad. On all arens Where topeoil <br /> ir ire=I,slled direct:y on the eub-�r�ide, tF�oroc,>,hty� till the topsoil to a doptii <br /> ,�f q". i:�� tiiling un Lhc 3reae of topsoil Nhir.h �e placed on crushed rock. 4fLvr <br /> tiili�.��� � i�:k out a;l deUric, _*ootn� rocks lar�er thln 1" 3iameter� etc. ahich I <br /> have 1 eeti `�rou+;ht to the curface. In a;�eas to be :3odded� i�oll topsoil bo compact <br /> �t , r,�refully eFtaoii�h finish �radeE AO ahown on the drawing3. <br /> , . . . �. a. , area:� Lo be sndi!ed, ��venly ispread ]0-2Q—?0 f'crtilizer on the r�lled rnd <br /> p;ra:cu to;�e::; : , nt: a ratc n.`' 12 lbr,. Per lOGO eq, ft. Ralce out all irregular— <br /> -- - - --I <br />