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Home My WebLink AboutTED4001855.1N 72- 49 wow STORM WATER DRAINAGE NOTES 11/30/88 00 to INSTALLL F" CAST IRON RO-MAC SADDLE AND S" TEST TEE REIIVTSALL EX CB BY' ADDING A MIN. 1.0' VERT SECTION EX RiM EL=70.00 INV EL=67.00 INSTALL 12LF-12'B AT SLOPE 8.33% - 7'Fo-oto-1Jjr-f` O EX. TIP 1 _ ' c WA 1� ' FUEL 0 /L ' 11 IFILLER CAP " 1 11 1 /t f 78 !8®EXISTING ��- EX. EDGE 182HOUSE I OF ASPHALT S CA LEI 84 ►�l I i ' ' STA IRS r r- � Nt 4V i if ' 32' x 32' ROOF DRAIN EX 4°' SS v"T r f ` p CO "`'' I Z r J �Q / 6" ADS I O v I 0 EX. ' t,0 WM .1 CB +� 2 TYPE ' LV I RIM EL. = 84.50 � '- \ I.E. = 82.00 I 'M 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY 11. Structures shall not be permitted within 10 feet of OCCURS, A PRE -CONSTRUCTION MEETING MUST BE HELD WiTH the spring line of any storm drainage pipe, or 15 feet 11 THE CiTY OF RENTON DEPARTMENT OF PUBLIC WORKS, DESIGN from the top of any channel bank. i ENGINEER. 12. All catch basin grates shall be depressed 0.10 feet 2. All construction shall be in accordance with the 111988 below pavement level. Standard Specifications for Road, Bridge and Municipal Construction" prepared by W_S.D.O.T., and the American Public works Association (APWA), as amended by the 13: Open cut road crossings thru existing public right -of - City of Renton Department of Public Works. way will not.be allowed unless s cific ll d 3. The storm drainage system shall be constructed according to the approved plans which are on file in the Department of Public Works. Any deviation from the approved plans will require written approval from the City of Renton Department of Public Works, Design Engineer or Storm Water Utility . 4. A copy of these approved plans must be on the job site whenever construction is in progress. 5. Datum shalt be U.S.G.S. unless otherwise approved by City of Renton Department of Public Works. Reference benchmark and elevation are noted on the plans. 6. All sedimentation/erosion facilities must be in operation prior to clearing and building construction, and they must be satisfactorily maintained until construction is completed and the potential for on - site erosion has passed. 7. All retention/detention facilities must be installed and in operation prior to or in conjunction with all construction activity unless otherwise approved by the Department of Public Works, Storm Water Utility. 8. Grass seed may be applied by hydroseeding. The grass seed mixture, other than City of Renton approved standard mixes, shall be submitted by a Landscape Architect and approved by the Dept. of Public Works, Storm Water Utility. pe a y approve by City of Renton Dept. of Public Works, Design Engineer. 14. Rock for erosion protection of roadside ditches, where required, shalt be of sound quarry rock placed to a depth of 1 foot and must meet the following specifications: 4"-8"/40%-70% passing; 2"-4" rock/30%- 40% passing; and -2" rock/10%-20% passing. I 15. All building downspouts and footing drains shalt be _! connected to the storm drainage system, unless approved by the Dept. of Public Works, Design Engineer or Storm Water Utility. An accurately dimensioned Certified as built drawing of this drainage system will be submitted to the City of Renton upon completion. 16. Issuance of the Building or Construction Permit by the City of Renton does not relieve the owner of the continuing legal obligation and/or liability connected with storm surface water disposition. Further, the City of Renton does not accept any obligation for the proper functioning and maintenance of the system provided during construction. 17. The Contractor shalt be responsible for providing adequate safeguard, safety devices, protective equipment, floggers, and any other needed actions to protect the life health, and safety of the public, and to protect property in connection with the performance of work covered by the contract. Any work within the traveled right-of-way that may interrupt normal traffic flow shalt require an approved traffic control plan by the Traffic Engineering Div. of the Dept. of Public W k All f h or s. sectrons o t e W.S.D.O.T. Standard _ 9. All pipe and appurtenances shall be laid on a Specifications 1-07-23, Traffic Control, shalt. apply. �-- � J 1 a I :V property prepared foundation in accordance with ISection 7-02.3(1) of the current State of Washington 18. Special drainage measures will be required if the / Standard Specification for Road and Bridge project location is within the aquifer protection q, I � Construction. This shall include necessary leveling area. \) a of the trench bottom or the top of the foundation � CB # ! TYPE l ' �( �� / RIM EL. = 8 4.?_ I material as well as placement and compaction of _required bedding material to uniform grade so that the x=ENE �' I.E.l= 8/.6l entire length of the pipe will be supported on a _= X=�� _SEX. EX. CURB U® S 2. 0% MIN !AT TAL LL I I/2" DCVA I`� U I haltuniformly be unyielding with the exception ofb�PVC Pe g SS S T ' pipe. All trench backfilt shall be compacted to j6 OLF 6 �/ I minimum 95% for pavement and structural fill and 90% P S _- 8'4� I EX. W.M.'SS R-761) I X shalt otherwbee61, overAand under P.V.C.STM pipe.0. Pea gravel bedding 12-0 CM / �R ,P w ' 1621E J� i, �X g„ yVq I ® -L TEL E. C B ` 10. Galvanized steel pipe and aluminized steel pipe for Iall drainage facilities shall have asphalt treatment ' AyL EXISTING I #i or better inside and outside. EXISTING FIREHYDRANT c_: t 1 I 1 ASPHALT ► X- 1 I / i 7 EROSION CONTROL NOTES 1 _ � RIM EL. = 72.0 ! 1 I , 1 _ - T ' S APPROX. 185NEXT ANT m 1 X EX. CONS I LINE EXIST. t3"D . wATE� _J-PRO 691 EXISTING 0'� v� 1 ASPHALT 1.4 J P;�oPE L if�E - � - I 1 1. S9e p3� I PARKING 1 _ Ex. 1 � � 1 EX. SSMH 1 RIM EL. = 75.0 I.E. = 63.63 sV I 1 � ® I 1 1 I `XORIA UTiLiiy 6HGk T)FV q�19/61j UTiu EtrGR Dev q/19/89 1 1 I I I / I NO TE. VERTICAL TOPOGRAPHIC INFORMATION If FROM; TOWNSEND,CH'ASTA/N & ASSOC. EX. SSMH ""� T dam, ° VALEY MEDICAL CENTER SITE PLAN RIM EL. = 69.2 + I CiTY OF RENTON DATUM I.E. = 59.42 BM=66.00 FINISH FIRST FLOOR OF EXIS FIREHYDRANT HOSPITAL 0 SS MH \ p t0 �EX 12-WA /xr __ .t 2Gv/.SBo� �n incdp. c 10/ NO. REVISION 1. All limits of clearing and areas of vegetation preservation as prescribed on the plan shall be clearly flagged in the field and observed during construction. 2. All required sedimentation/erosion control facilities must be constructed and in operation prior to land clearing and/or other construction to insured that sediment laden water does not enter the natural drainage system. All erosion and sediment facilities shall be maintained in a satisfactory condition until such time that clearing and/or construction is completed and potential for on -site erosion has passed. The implementation, maintenance, replacement and additions to erosion/sedimentation control systems shall be the responsibility of the permittee. 3. The erosion and sedimentation control systems depicted on this drawing are intended to be minimum requirements to meet anticipated site conditions. As construction progresses and unexpected or seasr,-al conditions dictate, the permittee shall anticipate that more erosion and sedimentation c;)ntrol facilities wilt be necessary to insured complete siltation control on the proposed site. During the course of construction, it shall be the obligation and responsibility of the permittee to address any new conditions that may be created by his activities and to provide additional facilities, over and above minimum requirements, as may be needed to protect adjacent properties and water quality of the receiving drainage system. 4. Approval of this plan is for erosion/sedimentation control only. it does not constitute an approval of storm drainage design, size nor location of pipes, restrictors, channels, or retention facilities. In any area which has been stripped of vegetation and where no further work is anticipated for a period of 30 days or more, all disturbed areas must be immediately stabilized with mulching, grass planting or other approved erosion control treatment applicable to the time of year in question. Grass seeding alone will be acceptable only during the months of April through September inclusive. Seeding may proceed, however, whenever it is in the interest of the permittee, but must be augmented with mulching, netting, or other treatment approved by the City of Renton, outside the specified time period. 6. For all erosion/sedimentation control ponds where the dead storage depth exceeds 6 inches, a fence, a minimum of 3 feet high is required, with 3:1 side slopes. 7. A temporary gravel construction entrance, 30, x 50, x 8" of 4- to 6- inch quarry spans shall be located at all points of vehicular ingress and egress to the construction site. „eeeeo e,•e, � A. • s �•L� L { • & • h.� CITY OF RENTON 3 DEPARTMENT 0I Pl!_9L I 'CORKS /�T �- /"/-P5' BY APPR. DATE SCANNED MAR � 8 vA L L E Y DIED l C,A L CENTER MED DIVE GARAGE UT_ILl_TY PLHt! DESIGNED G.S. DATE FEBRUARY 1989 FILE N0. DRAWN D.O. SCALE NOTED FIELD BOOK PAGE CHECKED M. T. APPROVED SHEET �_ OFF I DIRECTOR OF PUBLIC i d1v 40 43 615-001-831 1 Y > O 177 C~ D 7) ' 771z