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OH W RETAINING WALL OR DRAINAGE PLAN NOTES: OH W BUILDING FOOTING VARIES 1. NO NYSDEC OR FEDERAL WETLANDS OR 100-YEAR OH W FLOODPLAIN BOUNDARIES ARE LOCATED ON OR WITHIN THE VICINITY OF THIS SITE. OH W 2. SELECT BACKFILL IS REQUIRED FOR ALL UTILITIES (GAS, OH W SELECT STRUCTURAL FILL, TYP. GEOTEXTILE DRAINAGE WATER, STORM, SANITARY) THAT CROSS THROUGH ANY ARCHITECTURE & ENGINEERING FABRIC, WRAPPING TRENCH, PAVEMENT AREA. LIMITS OF SELECT BACKFILL ARE SHOWN W/ 1FT OVERLAP AT TOP HEREON. 255 ROUNDS AVE, BUFFALO NY 14225 VARIES - MIN. 1FT OH W NYSDOT No. 2 WASHED BANK RUN GRAVEL 3. A MINIMUM OF 6 INCHES OF COVER IS REQUIRED FOR ALL STORM SEWER PIPES LOCATED IN GRASS AREAS. A MINIMUM PROJECT INFORMATION OH W 4" PERF. UNDERDRAIN- CONNECT TO CATCH BASIN OF 12 INCHES OF COVER IS REQUIRED FOR ALL STORM OH W (SEE PLAN FOR SIZE) SEWER PIPES LOCATED IN PAVEMENT AREAS. STORM SEWER PIPE LOCATED WITHIN THE SUB-BASE OF THE PAVEMENT IS Project Name OH ST NOT PERMITTED. 4350 SENECA STREET 4" W 4. NO STORMWATER SHALL DRAIN ONTO ADJOINING BUILDING ADDITION ST PROPERTIES. OH W Project Address OHW ST 5. STORMWATER SYSTEMS HAVE BEEN DESIGNED FOR THE 4350 SENECA ST. OH W 25-YEAR STORM EVENT. WEST SENECA, NY 14224 OVERFLOW WEIR ST 6. PROVIDE STONE RIP RAP AT ALL PIPE OUTLETS FROM THE Client Name W INV.=645.0 OH 100-YR STORM ELEV. OH W UNDISTURBED COMPACTED DETENTION POND/INFILTRATION PRACTICES. HAVENS HOLDING GROUP CK SUBGRADE, TYP. 7. PROVIDE EMERGENCY OVERFLOW FOR THE DETENTION BA ST ST OH Waves Project Number W POND/INFILTRATION PRACTICES AT THE 100-YEAR STORM SET EXISTING INFILTRATION BED ELEVATION. OHW 24001.00 D NOTES: AR ST OH W A. PIPE INSTALLATION SHALL BE IN ACCORDANCE WITH MANUFACTURERS 8. INVERT ELEVATIONS ARE SHOWN FOR ALL CULVERTS UNDER Y ST RECOMMENDATIONS. AR DRIVEWAYS. ALL CULVERTS UNDER DRIVEWAYS SHALL HAVE ' RE OH B. TRENCHING OPERATIONS SHALL INCLUDE ALL NECESSARY DEWATERING. GALVANIZED END SECTIONS. ' W 38 W 25 OH C. TRENCH DETAILS ARE ONLY SHOWN FOR PURPOSES OF MATERIAL PLACEMENT AND MAXIMUM PAY LIMITS. INVERT = 649.0 INVERT = 663.0 OH W D. AN OSHA APPROVED MOVABLE PROTECTIVE TRENCH SHIELD SHALL UD UD RUN UNDERDRAIN ALONG BE USED IN ALL UNSHEETED TRENCH AREAS. BACK OF FOOTING OHW OH UD W UD UD UD PROJECT ISSUE & REVISION SCHEDULE UD UNDERDRAIN DETAIL UD UD UD 5.00' UD UD TWO STORY BLDG. ADDITION 5' SIDE YARD UD (FFE:648.5) SETBACK EXISTING INFILTRATION BED 2ND STORY 07/27/26 PERMIT DRAWING (FFE: 662.3) UD Description 5.14' Date G 5-2 RA % 1. DE , TY VA P. RI ES 1 , # PROFESSIONAL STAMPS ST ST ST ST ST ST ST ST ST ST ST ST ST SHEET INFORMATION ST ST Issued Scale for 22x34 Sheets 07/28/2026 1" = 20' Project Status PERMIT - SITE PLAN LEGEND: Drawing Title PROPOSED FLOW PATH DRAINAGE PLAN UD PROPOSED UNDERDRAIN Drawn By Checked By ERS JLH PROPOSED ADDITION 20 0 20 40 Drawing Number SCALE IN FEET INFILTRATION BED C-103 Page 14 of 84