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<br /> ENGI�'�EER�NG PLAN F;EVIEW 1'�t?TE� ANI� DETA,ILS III. ROAD�VAY� CLEA�:ING, AND GRA�DIl'+1G Nt3�7�,5: --'�'
<br /> l. All emba�czkm�:nt� shall be buil� and campacted accc�rding to WSD�}T std. spec,
<br /> I. GENEF;AL NOTE�: 2.03.3�14}C m�thc�3 B, The roadway subgrade sh�ll be prepared per WSDUT s�c.
<br /> 2-06.3. 'I'he Gity Engineer shall be pr4vided wittY certifitiatic�n fram the testing Iab of the
<br /> 1. Ali cor�tructit�n sha11 be in acct�rc�ance with the 1994 Washingtt�n State I?eparmnent of compaction of th� rc�adway bed prior tQ paving.
<br /> Transpc�rtaxzon (WST}OT) i Arnerican Pubiic Wc�rks Association {APWA} standard plans 2. Unsuitable s�iis and debris are to be e�port�d �rom the site to an approved location.
<br /> and spe�i�cations for road, bridge, and munici�al canstr��cti�n and the �itY 3. Fieid density tests shall be taken by a qu��lified sails engirr�ering firm. When the tests '
<br /> , Engineerir�g Standards. indicate that t.�e c�e�sity of any iayer c�f fi�l or portion therec�f is belc�w t��e specifiecl { � r e } �
<br /> 2. A,11 construction is sub ject tc� the i��s p e ction b y the Ci t y , En gineerin g Tns p e ctor d e n s i , t h e a rt i c u l a r s e c t i c�n s h a l 1 b e r e w o r k e d u n t i l t h� r e uire� densi �a�s '#�en , � } " ; ;
<br /> �r designated representative. obta'�neci. � � �Y : ;
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<br /> 3. Pric�r to any construction it shall be the responsibi�ity of the general eont�actc�r tc� c�btain 4, The slope t�f cut sur#aces shall be n.o �teeper tha�n is safe for the int�nded use. M�itmmum � ; ` � { ; -
<br /> than i � '
<br /> ali required permits and schedule a preconstructian meeting by contactin� the Public slope is two horizantal �o one vertical. '� ; ; � , �
<br /> Wt�rks department at '� ' , 5. Fill siopes shall not b� consmacteci c�n naturai slopes of twt� to one or steeper. � , � �; j �
<br /> 4. Approxi�nate ioca�ions of existing utilities have been c�btained fro�n availahle record�. 6. It shail be the respvnsibility af the contractor to c�btain a grading permit far any material � �; �" m'
<br /> The contractor shall b� respransible for additional utilities not shown so as to avt�zd ex rted. _ � -�i ��`' � ` �`
<br /> �'° `� �� � �
<br /> daanage ar disturbance. Cc�ntact one-call (1-800-424-�SSS} for utility lc�cation�, The 7. Areas to receive fill shall be pr�f r�lled per WSDC}T standards. A.11 loose and s�ft areas � �# �= c�
<br /> awnez or his representativ�, and the City shall be contacted immediately if a shall be remc�ved and replaced with struchual fill. �e ���` � �!
<br /> utility con#lict�xists. 8. Detrimental amount� of organie material shall not be pez�rnitteci in fills. Nc� rc�ck or �; �
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<br /> PP P P .l P � sirnilar irreducible material in excess gf 22 inches shall b�e buried or placed in fills. � � L,� �'
<br /> 5. A roved ca ies of thes�e lans sh�il be on the }c�t�whenever construction is in ro ress. ; � 3 ; �
<br /> 6. It is the r�s onsibili c�f the eneral contractar and en ineer to kee as construct�d � '
<br /> t P �Y � � P '�. Stockpiles are to kae located in safe areas and adet�uately prgtecteci by tem�orarily seeding �. �� �: �
<br /> infc�rznation du��ing the praject. A mylar rec�rd drawing must be submitted to the City and mulc h i�g. H ydre�seed preferred. �-� ;•t �; �
<br /> _ : priar tc� fi��al acce�tanr�. 1t1. Concrete for ali sidewalk, curb, and ciriveway cr�nstructi�n sl�al]. have a commer�ial mix � �` ���; {,� '
<br /> 7. The contractc�r shall v�erify the l�ation, widthsa thicknesses, and elevations c�f all existing having a minimum compressive strength of 3,IX10, PSI in 28 ciays. ; . .y ,, ; ;, ; �
<br /> pavernent and stzvctures that are to interface with new wc�rk. Pravide a�� trimming, � .- � 4 � ;" ;
<br /> ( � ( :j � i ;
<br /> cutting, �rading, levelin�, sloping, cc�ating, and c�ther work, including tn�terials as . � i ; � � ; I ;
<br />� necessary, to ca�se the �nn�erfac� with existing works to t�e accepiable tc� the City � ; ! ; i �����r ; �
<br /> E��ineer. �' � �
<br /> 8. All traific control in the City _ . right-af-way shall conform Lo the rncrs� recent �� ' ' � ! � '
<br /> Washington State Manual on Unifc�nn Traff'ic Contral Devices. � � i '
<br /> 9, NUTE: Ttus prc��ect may be c�nstructed ui phases. Areas not under canstru.ction are to I , �� �� � :
<br /> either remain vegetated or h�droseeded to mitigate erosion and sedun�ntatiQn impacts. I't'. STU12M D�7:A.IlYAGE NUTES: ��
<br /> �.}, � �
<br /> 10. Ail utilities shail be i.nstalled underground. � � ��
<br /> 11. The ma%lbc>x locatic�ns on site shall b� approved by Ehe Fc�stmaster. 1.. All storm drain pipe may be constructed c�f one of the following matenals untess �'-� ,�-� �= � ;
<br /> 1 2. C c�n t r a c t o r s s h a t l r n a i n t a i n f c�u r f e e t o f c l e a r a k n c e fr c�r n e l e c t r i c a� v a u l t�. otherwzse specifieci in the plans. Ali �z p e joints must be gasketaed ancl must be c�f the same � k�• �. �-
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<br /> 13. Iz�stall tc�n gauge insulated l+xate wire an all und�rground non-metallic pipe. mat�ria! �s t1�e pipe. The pipe shail have miz�imum cover as shown below. . ;� � � �`'
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<br /> _ *Cov�rage r�c�uirements far 18" or smaller: `��` � Q � �
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<br /> G LO Requires rcp (reinforc:ced concrete pipe wich�asketed joints, ASTM �-15 Class II) ;� ,�- �- ���
<br /> � r��iz�imum or ductile iran. ,� �� ` � {
<br /> 1.0' - 1.5' Requires cp (crancrete pip� with rubber gasketed joints, ASTM C-14} ?� �� � �,�j °
<br /> rniniznum. �� �� � `� t�
<br /> II. ERt�SIUN AND SEDIlI�IE1'+t'I` CQ��'R4L NOTES: > 1,5'Requires 16 gauge cmp {corrugate�i metal pipe AASHTC} M2�6 t�+pe I & II} c�r � �! �°} .��' � __.
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<br /> h.d.p,e. pipe with double gasketec# sleeved jc�ints, In high water table ; i ; ' � ; ;
<br /> l. All tempc�raz�y erosion and sediment cc�ntrol {TES�) measures shall be iz�stalled by the areas pvc (pve ASTM 3C13�, SDR 35) with gasketecl joints shall be ' ' � ; ; ' {
<br /> �c�ntractor prior to any gradin� c�r Iand clearing in accardan�e with the agproved TESC requirecl. � ; ` � ` �
<br /> pla.n. These facilities must be mauitained daily until final apprc�va� b� the City InspectQr. 2. All storm drain wc�rk must be staked �y survey fc�r line and grade prior to starting ; ; i � �
<br /> 2. 'i'he TES� facilities shawn c�n this plan are the minimum requirements for anticipat e d site cc�nstruction. ' .
<br /> cc�nditions. Uuring the cc�nstr�uction peric�d, the�e TESC shail be upgraded �e.g. 3. The backf�il shail be piaced �qually on bc3th �ides of the pipe in layers with a lo�se � ,
<br /> a d d i t i c�n a l s u m p s, r e l a c a t i c�n o f d i t c h e s a n d s i l t f e n e e s, e t c.) a s n e e d e d f o r u n e x p e c t e d a v e r a g e d e g t h o f 6 i n c h e s, m a 7 c i m u�n d e p t h 8 i n c h e s, t h c�r o u g h l y �a m p i n g e a c h l a y e r.
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<br /> storm ev�nts. These compacted layers must ext�nd for c�ne c�iameter �n each side c�f th� pipe or tc► the � �
<br /> 3. Construction access tt� the site shall be only as showz�on the appr€�ved plans. �l vehicles side of the trer�ch. To determine matez�ial r�quirements for backfill refer tc� WSDOT -- ` ;
<br /> �eaving the site c�z�to pub�ic right-of-way shall be cl��zied to prevent tracking of mud, dirt, standa�rd spee, 7.tk�.3{3} and standard spec. 2.03.3(1�}C, method B � C. �` -�' ``
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<br /> and c�ther debris. 4. All catch basin� with a depth ov�r S feet to the flc�w line sha11 be a tyype II cb (maY-�haie}. � �
<br /> 4. The contractar sh�ll sweep and ! wash down access streets at leasC daily or more 5. Storm water retention 1 detention facilities, storm pipe, and catch basins sh�Il be flusb.ed � � �4
<br /> frequent�y as may be necessary and so directed by th� City . � . Dust eontrol c�n and cleaned pric�r to city acceptance. Ct�ntatmi�aated wat�r shall not be pumped 'znto an �� �� � �`'
<br /> site will be required. exisii�g city storm syst�m. ,_ �,,:, �-, � .
<br /> 5. Install filtter fabric under all downstream catch basin gra�s (mminamurn Mirafi #1t10). 6. All pipe and appurtenances shali be laid on a properly prepareci fc�undation in accordance _�' �- � �:, .
<br /> 6. Poiluted w�ter may not be gua:npecl intc� the city s�orm system. with WSDQT '1.02.3(1). If, in the opinion c�f the city inspectc�r the exi�ting fr�unc�ation is . � � � �,
<br /> 7. Ali disturbeci areas such as retentic�n facilities, �oadway ba�k-slopes, etc. shall be seedecl unsatisfactory, then it shall be excavated below grade and backfilied in accordance with
<br /> with a p�rennial ground caver ta mininni�e erosic�n. Grass seed`zng will be dane using an standard s�ecificatiozis {V4TST}OT 9-03-123�}. Pipe shall not be ins#alled on soci, frozen � � � �.
<br /> approved hydroseeder. ea�rth, ar large bc�ulders or rc>ck, � `` ��
<br /> 8. I�nmediat�ly folic�wing fuush grading, permanent vegetation cansisting af rapid, gersistent 7. All gra�es (u�lets and catch basins} shall be d�gresseti .1 f�. below pavement level. `� � �
<br /> and legu.me wi11 t�e applied a� a minimum #8Q per acre, This i. ta include the followin:g: 8. All catch b�asins and curb inlets shall have 1c3c;king lids. � `-'C } �
<br /> 24 f annual, pere�nial or hydroseed required. Preparati�n of subgrade may be required 9. �.;tc�rm stub outs sha11 be mark� wzth a 2" '� �" b�ard and tabeled "starm" a�d extended � � �.�. �
<br /> pric�r to �ydroseeding, 1S f�et o�tt� property. L+acator wir� to exten�i ta tt�p of rt�uk�r board. .. � � �' � __
<br /> 9. All erc►sic�n control on site must comply with the Depa�-tment of Eeotogy Stormwater 10. Testing and TV inspectzc�n of storm drain lanes are at �i`�� �^p�i��. Trash ' '
<br /> Manual far the Puget Sound Basin regulatic�n�. racks shall be installed on the upstream <�nc� downstream end �f piges, culverts� and �� ,�,�� e � .
<br /> biosw�les. , ! �� � `;�,�''
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<br /> 11. Handholds in riser �r adjus�eni section sha11 h��.ve 3° r�iinnira�um clearance. Steps in cateh �*� } �'��.���r
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<br /> basin shall have 6" clearance. �.--�,,�4a�r��,���`���
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<br /> I2. All �peci�cations for �atc�i ,basins {t�'pe I & I�} and curb inlets shali � per f ;` �1 ,� � � ��� �. ��
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