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Home My WebLink AboutSWP272273(1) czz e-zZ � � FOR DISTRIBUTION TO: NO Water Utility Building Division FRI Wastewater Utility Public Works Constr Inspector a— Surface Water Utility Fire Prevention RN Maintenance Services po ME Transportation Systems Project: Y_1�0� Location: Attached please find copies of: PERMIT BILLS OF SALE A RECEIPT COST DATA INVENTORY LETTER OF SPECIAL BILLING EASEMENT(S) STUB SERVICE AGREEMENT COPY OF AS-BUILT PRECON NOTES 0 PRECON ATTENDEES DRAINAGE REPORT IN MEMO-WATER BREAKDOWN MAP WITH NEW MAINS AND VALVES 3 0 OTHER 2 Z From: Date: 4 C:TB:PRECON:DISTFRM R%RCITY OF RENTON Construction Permit Permit Number C 9 6 0 0 9 0 Permission is hereby given to do the following described work, according to the conditions hereon and according to the approved plans and specifications pertaining thereto, subject to compliance with the Ordinances of the City of Renton. Work Description (1►1,�0' INSTALL SEWER UNDER BLDG AND STORM LINE T6 ROW Job Address 200 S TOBIN ST Owner HARPER ENGINEERING CO, INC 200 S TOBIN ST RENTON WA Contractor CALKINS CONSTRUCTION Contractor's License CALKIC*077QN PO BOX 48082 Contractor's Phone (2 0 6) 2 4 4-2 7 8 9 SEATTLE, WA 98148 City License 7 Contact HARPER ENGINEERING CO, INC Contact's Phone Other Information Date Issued 0 4/15/19 9 6 Work Order 87830 Date of Expiration 10/12/19 9 6 Parcel Number 0 0 0 7 2 0-0 0 2 9 Date Finaled Inspector's Name Inspector's Phone It is understood that the City of Renton shall be held harmless of any and all liability, damage or injury arising from the performance of the work described above. You will be billed time and material for any work done by City staff to repair damages. Any work performed within the right-of-way must be done by a licensed, bonded contractor. Call 277-5570 one working day in advance for inspections. Locate utilities before excavating. Call before you dig -48 Hour Locators 1-800-424-5555 I hereby certify that no work is to be done except Subject to compliance with the Ordinances of the as described above and in approved plans, and that City of Renton and information filed herewith this all work is to c6hform to Renton codes and permit is granted. ordinancesl� X j/ � X a�L 4 plicant Public Works Rep THIS PERMIT MUST BE POSTED AT THE JOB SITE AT ALL TIMES. BD3203e 08/94 iif * crry OF C rECEIVED ?996 LEVELI RI'VISION DRAINAGE INSPECTION FOR HARPER SITE PLAN PROJECT NO. 94-62 August 9, 1995 R. NFL O o f w` y� S 12701 c�"70N L ECG BY: FOR: PACIFIC ENGINEERING DESIGN, INC. HARPER ENGINEERING 130 ANDOVER PARK EAST 200 SOUTH TOBIN STREET SUITE 300 RENTON, WA 98055 SEATTLE, WA 98188 PHONE: (206) 255-0414 PHONE: (206) 431-7970 LEVEL I DRAINAGE INSPECTION On August 8, 1995 a site inspection of the down-stream drainage corridor was made during clear weather conditions. The City of Renton Storm Drainage Inventory Maps/data were used as a reference. The subject improvements drain to Lake Street which contains a storm drainage trunk line extending from Airport Way to the intersection of Rainier Avenue N. and 3rd Street. Areas contributing drainage to this line are commercial developments with the exception of Renton High School practice field located between Tobin and 2nd Street. The storm drainage trunk line consists of catch basins with CMP and concrete pipe lines. The pipe sizes range from 12" diameter at the Tobin/Lake Street intersection to 24" diameter concrete south of the Lake Street/2nd Avenue intersection. The drainage corridor was investigated for 1/4 mile downstream of the site and no capacity problems were observed with the exception of an area along the west curb line opposite point 16F5-6 (refer to Inventory Map). In this area, the adjacent building at the west margin of Lake Street has stairways leading from the sidewalk down to building entries for the bottom floor. At two of these stairways, sand bags and plywood have been placed apparently to prevent drainage resulting from street flooding from entering the lower floors due to overtopping of the sidewalk. This indicates flooding at the low point in Lake Street. From the city data it is noted the pipe run (from point 16F5-10 to 16F5-7) is a 15" diameter CMP at 0.15%. Pipe capacity, flowing full at this point, would be approximately 1.3 cfs. A drainage analysis for the 100 year/24 hour event was done. This analysis showed the increase in flows from the proposal would be 0.15 cfs with an increase of runoff volume of 570 c.f. Since the 100 year runoff increase was less than 0.5 cfs the site qualifies for an exemption from providing on-site detention for the proposed development. It should be noted the existing parking lot surface detention area has been relocated from the north portion of the site to the south parking area. Therefore,the existing detention volume is still provided by the new development. The flooding problem previously discussed is likely the result of the 110' of 15" diameter CMP pipe at S = 0.15% having insufficient capacity. The flooding problem probably occurs during even minor storm events. This proposal will not aggravate, i.e., increase the magnitude, frequency or duration, of the existing flooding problem. No erosion, scouring, bank sloughing or sedimentation were noted during the inspection. PACIFIC ENQINEERINQ DESIGN INC. JOEI GA nil -2 CIVIL ENGINEERING AND PLANNING CONSULTANTS SHEET NO. I `�I OF- CALCULATED n/� CALCULATED BY j 1 DATE -J' I�!`1 4- i ......_......................_.:...................................;_ .... .. .. .... ...... ........_j......._.. ..... _ t...... .... ..... lie . �r f ....i.... .... 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I .._._._..�..._...._.:.............:...0 (e �.�._............ ............ ..... _ _ _._.. _ .... .._ .. ...... :.._ ... ....__ ....:_ - ... .................... ........... _.......... ....... ............ ...... _.... ...... ......... ......._....... .. .._.... _........ ..:...........:... ....�... ....... .. 130 ANDOVER PARK EAST, SUITE 300 SEATTLE, WASHINGTON 98188 (206) 431-7970 FAX:431-7975 8/ 9/95 Pacific Engineering Design Inc page 1 HARPER ENGINEERING BUILDING ADDITION EXEMPTION FROM ON-SITE DETENTION BASED ON NET INCREASE FOR 100 YR/24 HR EVENT OF LESS THAN 0 .5 CFS BASIN SUMMARY BASIN ID: DE10 NAME : DEVELOPED BASIN W/ 10 YR SBUH METHODOLOGY TOTAL AREA . . . . . . . = 0 .35 Acres BASEFLOWS: 0 .00 cfs RAINFALL TYPE . . . . : USER1 PERVIOUS AREA PRECIPITATION . . . . : 2 .90 inches AREA . . : 0 .00 Acres TIME INTERVAL . . . . : 10 .00 min CN . . . . : 861 .00 TIME OF CONC . . . . . .. 1 .78 min IMPERVIOUS AREA ABSTRACTION COEFF : 0 .20 AREA . . : 0 .35 Acres CN . . . . : 98 .00 TCReach -- SheeL L: 80 .00 ns : 0 .0110 p2yr : 2 .00 s :0 .0088 PEAL: RATE : 0 .30 cfs VOL : 0 .08 Ac-ft TIME : 470 min BASIN ID: DE100 NAME : DEVELOPED BASIN W/ 100 SBUH METHODOLOGY TOTAL AREA . . . . . . . : 0 .35 Acres BASEFLOWS : 0 .00 cfs RAINFALL TYPE . . . . : USER1 PERVIOUS AREA PRECIPITATION . . . . : 3 .90 inches AREA . . : 0 .00 Acres TIME INTERVAL_ . . . . : 10 .00 min CN . . . . : 86 .00 TIME OF CONC . . . . . : 1 .78 min IMPERVIOUS AREA ABSTRACTION COEFF . 0 .20 AREA . . : 0 .35 Acres CN . . . . : 98 .00 TCReach -- Sheet L : 80 .00 ns:0 .0110 p2yr : 2 .00 s:0 .0088 PEAK RATE : 0 .41 cfs VOL : 0 . 11 Ac-ft TIME : 470 min BASIN ID: DE2 NAME : DEVEELOPED BASIN W/ 2 YR SBUH METHODOLOGY TOTAL AREA . . . . . . . : 0 .35 Acres BASEFLOWS: 0 .00 cfs RAINFALL TYPE . . . . : USER1 PERVIOUS AREA PRECIPITATION . . . . : 2 .00 inches AREA . . : 0 .00 Acres TIME INTERVAL. . . . . : 10 .00 min CN . . . . . 86 .00 TIME OF CONC . . . . . : 1 .78 min IMPERVIOUS AREA ABSTRACTION COEFF : 0 .20 AREA . . : 0 .35 Acres CN . . . . 98 .00 TcReach - Sheet L: 80 .00 ns : 0 .0110 p2yr : 2 .00 s :0 .0088 PEAK RATE : 0 .20 cfs VOL : 0 .05 Ac-ft TIME: 470 min fit/ 9/95 Pacific Engineering Design Inc page 2 HARPER ENGINEERING BUILDING ADDITION EXEMPTION FROM ON-SITE DETENTION BASED ON NET INCREASE FOR 100 YR/24 HR EVENT OF LESS THAN 0 .5 CFS BASIN SUMMARY BASIN ID: EX10 NAME : EXISTING BASIN W 10 YR SBUH METHODOLOGY TOTAL_ AREA . . . . . . . : 0 .35 Acres BASEFLOWS : 0 .00 cfs RAINFALL_ TYPE . . . . : USER1 PERVIOUS AREA PRECIPITATION . . . . : 2 .90 inches AREA . . : 0 . 13 Acres TIME. INTERVAL . . . . : 10 .00 min CN . . . . : 86 .00 TIME OF CONC . . . . . : 14 .40 min IMPERVIOUS AREA ABSTRACTION COEFF : 0 .20 AREA . . : 0 .22 Acres CN . . . . 98 .00 TcReach -- Sheet L: 80 .00 ns : 0 . 1500 p2yr : 2 .00 s :0 .0088 PEAK RATE : 0 . 18 cfs VOL : 0 .07 Ac---ft TIME : 480 min BASIN ID: EX100 NAME : EXISTING BASIN W/ 100 YR SBUH METHODOLOGY TOTAL AREA . . . . . . . : 0 .35 Acres BASEFLOWS: 0 .00 cfs RAINFALL TYPE . . . . : USER1 PERVIOUS AREA PRECIPITATION . . . . : 3 .90 inches AREA . . : 0 . 13 Acres TIME INTERVAL . . . . : 10 .00 min CN . . . . : 86 .00 TIME OF CONC . . . . . : 14 .40 min IMPERVIOUS AREA ABSTRACTION COEFF : 0 .20 AREA . . : 0 .22 Acres CN . . . . 98 .00 TcReach -- Sheet. L : 80 .00 ns: 0 .1500 p2yr : 2 .00 s :0 .0088 PEAK RATE : 0 .26 cfs VOL : 0 .09 Ac--ft TIME : 480 min BASIN ID: EX2 NAME : EXISTING BASIN W/ 2 YR SBUH METHODOLOGY TOTAL AREA . . . . . . . : 0 .35 Acres BASEFLOWS: 0 .00 cfs RAINFALL TYPE . . . . : USER1 PERVIOUS AREA PRECIPITATION . . . . : 2 .00 inches AREA . . : 0 . 13 Acres TIME INTERVAL . . . . : 10 .00 min CN . . . . : 86 .00 TIME OF CONC . . . . . : 14 .40 rain IMPERVIOUS AREA ABSTRACTION COEFF : 0 .20 AREA . . : 0 .22. Acres CN . . . . : 98 .00 TcReach Sheet L: 80 .00 ns :0 .1500 p2yr : 2 .00 s :0 .0088 PEAL: RATE : 0 . 12 cfs VOL : 0 .04 Ac-ft TIME : 480 min EBTSDI6.XLS CATCH BASIN AND OUTLET PIPE INVENTORY SHEET 16 The inventory information for the storm drainage system was compiled from numerous sources and is the best information available at this time and should be used only for GENERAL guidance . The City of Renton is not responsible for errors or omissions when this information is used for engineering purpose. Designers are to field verify this information. DWN GRATE GRATE PIPE PIPE STREAM STRUCTURE INDEX # TYPE ELVE UPPER IE LOWER IE TYPE DIAM TYPE LENGTH STRUCT PLAN FILE CB 16,E 6 - 8 . 1 83.97 81.29 82.21 S. - - 16,E64 4-4-319 CB 16,E. 6, - 9 1 83.69 79.27 - S 1? CC 16,E6-24 4-4-319 CB 16,E 6 - 14' 1 - - - S 12 CC - 16,E6-15 - CB 16,E 6 - 15 1 - - - S 12 CC - 16,E6-16 - CB 16,E 6 - 16 1 - - - S 12 CC - 16,E6-4 - CB 16,E 6 - 17 1 - - - S 12 CC - 16,F7-7 - CB 16,E 6 - 18 1 30.62 26.2 - S 24 CC - 16,D6-19 19-4-13 CB 16,E 6 - 24 1 - - - S - - - 16,E6-21 - CB 16,F 3 - 2 1 27.4 23.79 22.42 S 12 CC 274 16,F3-3 1-2-7. CB 16,F 3 - 3 1 26.3 22.42 22 S 12 CC 83 16,173-4 1-2-7. CB 16,F 4 - 4 1 26.6 24.05 22.8 S 6 CC 260 16,F4-5 4-1-124 CB 16,F 4 - 5 1 25.8 22.8 20.9 S 8 _ CC 230 16,F4-6 4-1-124 CB 16,F 4 - 7 1 25 22.54 20.78 S 8 CMP 80 16,174-8 17-4-163 CB 16,F 4 - 8 1 24.59 20.78 20.32 S 12 CMP - 92 16,F4-9 17-4-163 CB 16,F 4 - 9 1 25 20.32 20.13 S 12 CMP 38 16,174-2 17-4-163 CB 16,F 4 - 10 1 27.9 23.95 22.61 S 12 CC 336 16,F4-11 1-2-7. CB 16,F 4 - 11 1 26.4 22.6 22.5 C 12 CC 22 16,F4-1 1-2-7. CB 16,17 4 - 12 1 - - - S 12 CC �� 16,F4-3- - CB 16,F 6 - 2 1 23.25 20.72 19.6 S 12 CSP 150 16,F6-3 3-1-501 CB 16,F 6 - 4 1 24.5 18.97 18.17 S 12 CSP 45 16,F6-6 3-1-501 CB 16,F . 6 - 12 1 - - - S 12 CC - 16,F7-6 - CB 16,F 7 - 6 1 - - - S 18 CC - 16,F7-7 - CB 16,F 7 - 7 1 - - - C 12 CC - 16,F7-8 - CB 16,F 7 - 8 1 - - - C 12 CC - 16,F7-9 - CB 16,F 7 - 9 1 - - - C 12 CC - 16,F7-10 - CB 16,F 7 - 10 1 - - - C 12 CC - 16,F7-3 - CB 16,F 7 - 11 1 - - - S 18 CC - 16,F7-12 - CB 16,F 7 - 13 1 - - - S 8 CC - 16,F7-14 - April, 1995 Page 3 EYTS016-ns O :AND OUTLET PIPE INVENTORY SHEET 16 "�apr tfie>storm .-drainage system was compiled from numerous sources and is the best information available at this only for GENERAL guidance . The City of Renton is not responsible for errors or omissions when this and', dope':used, Designers are to field verify this information. b uled !or erxJineering purpose. r9 fY •. '.Y DWN GRATE UPPER LOWER GRATE OM PIPE PIPE STREAM PLAN UCTURE INDEX # TYPE CB 7 IE IE IE TYPE SEP. DIAM. TYPE LENGTH STRUCT FILE MH 16,E 8 - 15 2-54. Y 20 16.09 16 S N 24 CMP 42 16,E8-5 4-3-210 MH 16,E 8 - 16 2 Y 21.84 12.85 12.22 C N 48 RCP 225 16,E8-17 SW 7TH ST MH 16,E 8 - 17 Jan-00 Y 22 12.22 11.9 C N 48 RCP 115 16,E8-18 SW 7TH MH 16,E 8 - 18 2-72. Y 22.3 13.7 13.64 C N 24 CC 23 16,E8-4 SW 7TH MH 16,E 8 - 19 2 Y - - - C N 60X36 CMP - 16,1)8-10 - MH 16,F 3 - 1 2 Y 30.77 20.29 20.04 - N 18 CC 100 - 1-2-7. MH 16,F 3 - 4 2 Y 26.8 22 20.79 C N 12 CC 302 16,E3-5 1-2-7. MH 16,F 4 - 1 2-48. Y 26.3 22.31 - C N 12 CC <::�:> 16,F4-12 3-1-551 MH 16,F 4 - 2 2-48. Y 25.5 22.56 22.31 S N 12 CC 50 16,F4-1 3-1-552 • MH 16,F 4 - 3 2-48. Y 24.5 21.99 21.56 S N 15 CMP 286 16,F5-6 3-1-551 MH 16,F 4 - 6 2-48. Y 26.5 24.65 22.56 C N 12 CC 200 16,F4-2 4-1-124 MH 16,F 5 - 1 2 Y - - - C N 12 CC - 16,F5-14 - MH 16,F 5 - 2 2 Y 26.86 15.4 - C N 24 CC <:Z7 "16,F5-16 17-1-7 MH 16,F 5 - 3 2-48. Y 26.03 17.6 17.5 C N 18 CC 16,F5-9 3-1-551 -MH_-1U 5--- 6- 2-48. Y _25.4 18.16 17.97 S _N_ 15 CMP 170 16,F5-10 3-1-551 MH 16,F 5 - 7 2-48. Y 25.8 17.81 17.69 C N 15 CMP 2 16,F5-3 3-1-551 MH 16,F 5 - 8 2 Y 32.96 28.46 - S N 18 CC 190 16,F5-9 17-1-7 MH 16,F 5 - 9 2 Y - - - C N 24 -CC - 16,F5-2 17-1-7 • MH 16,F 5 - 10 2-48. Y 24.9 17.97 17.81 S_ N_ 15_— CC 110 - 16,175-7 4-1-136 MH 16,F 5 - 11 2-54. Y 30.5 20.93 20.6 L N 48 CMP 58 16,F5-12 4-1-136. . MH 16,F 5 - 12 2-54. Y 26.6 20.6 18.22 L Y W/R 12 CC 40 16,F6-10 4-1-136 MH 16,F 5 - 13 2 Y 26.86 15.4 - - N - CC - 16,F5-1 FB 340 MH 16,F 5 - 14 2 N - - - C N 12 CC - 16,F6-10 - MH 16,F 5 - 16 2 Y - - - C N 24 CC - 16,FE — 17-3-31 MH 16,F 6 - 5 2-54. Y 27.34 18.74 18.17 C N 12 CC 260 16,F6-6 3-1-501 MH 16,F 6 - 6 2-54. Y 26.09 18.17 18.17 C N 12 CC 12 16,F7-1 3-1-501 MH 16,F 6 - 7 2-54. Y 21.8 16 15 S N 8 CC 300 16,F6-8 4-1-111 MH 16,F 6 - 8 2-54. 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