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Transcription

1 ,. e: 1 J \,_ ', " NWP of 8

2 NWP of 8 Project #5779 Date 9/17/15 ~ Pacific Habitat Services, nc SW Commerce Circle, Suite 180 Wilsonville, OR Aerial Photo TJGURE Peterson Machinery Company, Oregon 3 Google Earth, 2015

3 Fl:rl NWP of 8 LEGEND = = E2TB Study Area Boundary (22.61 ac) Wetland (1.48 ac) Roadside Ditch SCALE N FEET Pacific Habitat SeNices,lnc SN Conmarcc Clrde, Stlltc 180Wlbofflille, Oregon Phone: (503) Fax (503) Plans Provided by CDA Existing Conditions

4 m NWP of 8 '-, -,_ LEGEND -- = 1~ --,,, Study Area Boundary (22.61 ac) Existing Contours Proposed Contours ~ - - Permanent Wetland mpact Fill (1.48 ac/ 20, 146 cy) Wetland A ac/ 20, 115 cy Wetland B act 31 cy SCALE N FEET ~ - [Jt:JJD Plans Pacific Habitat Services, nc SN Commerce Circle, Suite 180 NllsoovD!o, Oregon Phone: (503) F3:io: (503) Provided by CDA Proposed Site Plan, Grading and Cross Section Locations

5 Fl?RE NWP of 8 Cross Section A-A' r---+~-.k-- ~ ~~J-~o~ '"=-g 1~-:iii ~-~ _---t J,Kh ~# V#//fi'/,/, '.: EXSTNG GRAnF" cc rc;-o ~"' '""""' EJi _, >, " RADE y,- \ ~v \ GRADE Cross Section ' Cross Section 82-82' Pacific Habitat Services, nc SN Commerce Clrde, Sulla 180 Wllsorivllle, Oregon Phone: (503) Fox (503) Plans Provided by CDA Cross Section of Wetland mpacts

6 Sediment Fence Construction Entrance Concrete Washout 5'x5'x3' deep Fl8RE NWP of 8 '"-... ' ' '-, S/fA, l,, v,vs.$" :.:-...>~--"- /' f.t;qf.t/a.' '-.,.. ~s 'fjjfs. vv,q Y '--. ~D/~'J, (us 1-tii;y '..-., ~ LEGEND = Study Area Boundary (22.61 ac) --21~-- Existing Contours _,,, Proposed Contours <>0. "- "- ~ "- "- "- ', "- ' ~'," ' Sediment Fence <1..,,, l V llj ~ ~, ~, ~ \Z ~ ( 0:: 10 ~ l ~ fl L r ri i --o--- Sediment Fence 0 nlet Protection NOTE: See Figure 8A for Erosion Control notes. "- ~ Construction Entrance ~ Concrete Washout SCALE N FEET 400 Pacific Habitat Services, nc SN Commen:e Clrde, SUte 180 Wllsonvlle, Oregon Phone: (503) Fax (503) Plans Provided by CDA Sediment and Erosion Control Plan

7 FBAE NWP of 8 GRADNG & UTLTY EROSON & SEDMENT CONSTRUCTON NOTES 1. SEED USED FOR TEMPORARY OR PERMANENT SEEDNG SHALL BE COMPOSED OF ONE OF THE FOLLOWNG MXTURES, UNLESS OTHERWSE AUTHORZED: A. VEGETATED CORRDOR AREAS REQURE NATVE SEED MXES. SEE RESTORATON PLAN FOR APPROPRATE SEED MX. B. ~~~~ugft~~~m~ 1 N(J~O B1y8~ifHT) 2. TURF-TYPE FESCUE (60l'.: BY WEGHT) C. STANDARD HEGHT GRASS MX (MN. 100 LBS/AC.) 1. DWARF PERENNAL RYEGRASS (BOl'.: BY WEGHT) 2. CREEPNG RED FESCUE (20l'.: BY WEGHT) 2. SLOPE TO RECEVE TEMPORARY OR PERMANENT SEEDNG SHALL HAVE THE SURFACE ROUGHED BY MEANS OF TRACK-WALKNG OR THE USE OF OTHER APPROVED MPLEMENTS. SURFACE ROUGHENNG MPROVES THE SEED BEDDNG AND REDUCES RUN-OFF VELOCTY. 12. SWEEPNGS FROM EXPOSED AGGREGATE CONCRETE SHALL NOT BE TRANSFERRED TOT HE STORM WATER SYSTEM. SWEEPNGS SHALL BE PCKED UP ANO DSPOSED OF N THE TRASH. 13. AVOD PAVNG N WET WEATHER WHEN PAVNG CHEMCALS CAN RUN-OFF NTO THE STORM WATER SYSTEM. 14. USE BMP's SUCH AS CHECK DAMS, BERMS, SEDMENT FENCE AND NLET PROTECTON TO PREVENT RUN-OFF FROM REACHNG DSCHARGE PONTS. 15. COVER CATCHBASNS, MANHOLES, AND OTHER DSCHARGE PONTS WHEN APPLYNG SEAL COAT, TACK COAT, ETC. TO PREVENT NTRODUCNG THESE MATERALS TO THE STORM WATER SYSTEM. 3. LONG TERM SLOPE STABLZATON MEASURES SHALL NCLUDE THE ESTABLSHMENT OF PERMANENT VEGETATVE COVER VA SEEDNG WTH APPROVED M X AND APPLCATON RA TE. 4. TEMP ORARY SLOPE STABLZATON MEASURES SHALL NCLUDE: COVERNG EXPOSED SOL WTH PLASTC SHEETNG, STRAW MULCHNG, WOOD CHPS, OR OTHER APPROVED MEASURES. 5. STOCKPLED SOL STRPPNGS SHALL BE PLACED N A STABLE LOCATON AND CONFGURATON. DURNG "WET WEATHER" PERODS, STOCKPLES SHALL BE COVERED WTH PLASTC SHEETNG OR STRAW MULCH. SEDMENT FENCE S REQURED AROUND THE PERMETER OF THE STOCKPLE. 6. EXPOSED CUT OR FLL AREAS SHALL BE STABLZED THROUGH THE USE OF TEMPORARY SEEDNG AND MULCHNG, EROSON CONTROL BLANKETS OR MATS, MD-SLOPE SEDMENT FENCES OR WATTLES. OR OTHER APPROPRATE MEASURES. SLOPES EXCEEDNG 25l'.: MAY REQURE ADDTONAL EROSON CONTROL MEASURES. 7. AREAS SUBJECT TO WND EROSON SHALL USE AP PROP RA TE DUST CONTROL MEASURES NCLUDNG THE APPLCATON OF A FNE SPRAY OF WATER, PLASTC SHEETNG, STRAW MULCHNG OR OTHER APPROVED MEASURES. B. CONSTRUCTON ENTRANCES SHALL BE NSTALLED AT THE BEGNNNG OF CONSTRUCTON AND MANTANED FOR THE DURATON OF THE PROJECT. ADDTONAL MEASURES MAY NCLUDE, BUT NOT LMTED TO. TRE WASHES, STREET SWEEPNG AND VACUUMNG (REQURED TO NSURE ALL PAVED AREAS ARE KEPT CLEAN FOR THE DURATON OF THE PROJECT). 9. ACTVE NLETS TO STORM WATER SYSTEMS SHALL BE PROTECTED THROUGH THE USE OF APPROVED NLET PROTECTON MEASURES. ALL NLET PROTECTON MEASURES ARE TO BE REGULARLY NSPECTED AND MANTANED AS NEEDED. 10. SATURATED MATERALS THAT ARE HAULED OFF-STE MUST BE TRANSPORTED N WATER-TGHT TRUCKS TO ELMNATE SPLLAGE OF SEDMENT AND SEDMENT-LADEN WATER. EROSON AND SEDMENT CONTROL BMP MPLEMENTATON 1. ALL BASE ESC MEASURES (NLET PROTECTON, PERMETER SEDMENT CONTROL, GRAVEL CONSTRUCTON ENTRANCE, ETC.) MUST BE N PLACE. FUNCTONAL AND APPROVED N AN NTAL NSPECTON, PROR TO COMMENCEMENT OF CONSTRUCTON ACTVTES. 2. ALL "SEDMENT BARRERS (TO BE NSTALLED AFTER GRADNG)" SHALL BE NSTALLED MMEDATELY FOLLOWNG ESTABLSHMENT OF FNSHED GRADE AS SHOWN ON THESE PLANS. 3. LONG TERM SLOPE STABLZATON MEASURES "NCLUDNG MA TllNG" SHALL BE N PLACEOVER ALL EXPOSED SOLS BY OCTOBER THE STORMWATER FACLTY SHALL BE CONSTRUCTED AND FUNCTONNG PROR TO STE PAVNG. 5. NLET PROTECTON SHALL BE N-PLACE MMEDATELY FOLLOWNG PAVNG ACTVTES. 11. AN AREA SHALL BE PROVDED FOR THE WASHNG OUT OF CONCRETE TRUCKS N A LOCATON THAT DOES NOT PROVDE RUN-OFF THAT CAN ENTER THE STORM WATER SYSTEM. F THE CONCRETE WASH-OUT AREA CAN NOT BE CONSTRUCTED GREATER THAN 50' FROM ANY DSCHARGE PONT, SECONDARY MEASURES SUCH AS BERMS OR TEMPORARY SETTLNG PTS MAY BE REQURED. THE WASHOUT SHALL BE LOCATED WTHN SX FEET OF TRUCK ACCESS AND BE CUEANED WHEN T REACHES 50% OF CAPACTY. -~ ot:-hjj Pacific Habitat Services, nc SN Common:e Circle, SUlte 180 Wllsoovllle, '9gon Phone: (503) Fax (503) Plans Provided by CDA Erosion Control Notes

8 FlgRE NWP of 8 ~,... ~- '"'--,._, ' ' " "" " -,_ ' -,, -, -,... _... ";?'&~ l, ~, ~ ~ z ~ (er: 10 ~ l ~i LEGEND _,,, Study Area Boundary (22.61 ac) Proposed Contours " SCALE N FEET Pacific Habitat Services, nc SN Commerce Circle, Suite 180 wnsonvllle, Oregon Phono: (503) 570~800 Fax (503) Plans Provided by CDA Stormwater Plan