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Home My WebLink About3276.1E 1/4, SEC 4, T 23 N, R 5 E, W.M. 26,7 Z ., 426, ; ; INTX STA 0+00 — NE 21 st ST I I r:1-M=" ' -- - INTERCEPTOR SWAL WITH J !E=424,1 ` CHECK DAMS 50' O.C. I�,�.:zr2�=,1� �r� 24,:,' E" (SEE DETAILS) �I REDMOND AVE NE J 33 i!7 i .{s egf w� CIL, "k 71-1 w I"-; , j fY 3"• 5. 5•- ,f _....,. EROSION and SEDIMENT CONTROL NOTES 1. Approval of this erosion and sediment control (ESC) plan does not constitute an approval of permanent road or drainage design (e.g., size and location of roads, pipes, restrictors, channels, retention facilities, ;Jtilities, etc.). 2. The implementation of these ESC plans and the construction, maintenance, replacement, and upgrading of these ESC facilities is the responsibility of the applicant/ESC supervisor until all construction is approved. 3. The boundaries of the clearing limits shown on this plan shall be clearly flagged by a continuous length of survey tape (or fencing, if required) prior to construction. During the construction period, no disturbance beyond the clearing limits shall be permitted. The clearing limits shall be maintained by the applicant/ESC supervisor for the duration of construction. 4. The ESC facilities shown on this plan must be constructed prior to or in conjunction with all clearing and grading so as to ensure that the transport of sediment to surface waters, drainage systems, and adjacent properties is minimized. 5. The ESC facilities shown on this plan are the minimum requirements for anticipated site conditions. During the construction period, these ESC facilities shall be upgraded as needed for unexpected storm events and modified to account for changing site conditions (e.g., additional sump pumps, relocation of ditches and silt fences, etc.). 6. The ESC facilities shall be inspected daily by the applicant/ESC supervisor and maintained to ensure continued proper functioning. Written records shall be kept of weekly reviews of the ESC facilities during the wet season (Oct. 1 to April 30) and of monthly reviews during the dry season (May 1 to Sept. 30). 7. Any areas of exposed soils, including roadway embankments, that will not be disturbed for two days during the wet season or seven days during the dry season shall be immediately stabilized with the approved ESC methods (e.g., seeding, mulching, plastic covering, etc.). 8. Any area needing ESC measures not requiring immediate attention shall be addressed within fifteen (15) days. 9. The ESC facilities on inactive sites shall be inspected and maintained a minimum of once a month or within forty—eight (48) hours following a storm event. 10. At no time shall more than one (1) foot of sediment be allowed to accumulate within a catch basin. All catch basins and conveyance lines shall be cleaned prior to paving. The cleaning operation shall not flush sediment —laden water into the downstream system. 11. Stabilized construction entrances and roads shall be installed at the beginning of construction and maintained for the duration of the project. Additional measures, such as wash pads, may be required to ensure that all paved areas are kept clean for the duration of the project. 12. Any permanent flow control facility used as a temporary settling basin shall be modified with the necessary erosion control measures and shall provide adequate storage capacity. If the facility is to function ultimately as an infiltration system, the temporary facility must be graded so that the bottom and sides are at least three feet above the final grade of the permanent facility. 13. Where straw mulch for temporary erosion control is required, it shall be applied at a minimum thickness of 2 to 3 inches. 14. Prior to the beginning of the wet season (Oct, 1), all disturbed areas shall be reviewed to identify which ones can be seeded in preparation for the winter rains. Disturbed areas shall be seeded within one week of the beginning of the wet season. A sketch map of those areas to be seeded and those areas to remain uncovered shall be submitted to the DDES inspector. The DDES inspector can require seeding of additional areas in order to protect surface waters, adjacent properties, or drainage facilities. ,042�305t'J13�3� —+► BOLLARDS LIMITS OF CLEARING (TYPICAL) 150 LF SILT FENCE (SEE DETAIL) 6' MIN MIN DEPTH OVERFLOW SPILLWAY V)V) zz W W C O O 0 Cy) U '> f— `% U U Of C_ W W IZ n r-) r-) W W >) C/') W W IY IY NE 22nd PLACE o- o- o I O I 00 rX C EXJM I I' _........._, ... 30' , 1 30 C N Ir: .:7.- NE 21st STREET �• �F � /t P r,. 1� I W427,92' .: r (SE 104th STREET)s 0' r..--.....,i , ,.... - ..,._............ . w. .............. r• 'y k:X ..,..�'7 ,....�, .. .... :1 uu Fe t S E"VIVER 'CFI! f•02 8+00 _--. LIMITS OF CLEARING ; IEXJ 7 , �'r i� i("PICAI_�% r:i _. „ !� r I z e i,�3f�v,,.44•$,_0zit. q , _ , r 20 AD l, , ,' 3 �j , r f �— 4 i= W ,,rr jj � Z cc 1 i �0� Cc�I,:��3�0o g� 80�0�0301 0IMENT L 0� i f TRAP �.... f I - 0 L� � -� (SEE ,•fie ' r`. , QETaI L) _..._ ._ r ff O 3,y1-0 i' YL ' ' '= 2-- — _ f - ...s —-------- — ------ Z ,------------------- ,cri tn/ " — — — — — — / r rIR L s ti. y "v 30' _ y 30' , 435.00 n , ..m._ , I ,UNK FENCE i [TREES TO REMAIN IN BACK •'.." 20' OF LOTS ONLY OAOpO�ODO,O�OQOpO — ®°0°o9o°aP MIN 1' DEPTH NATIVE SOIL OR " I' 2"-4" ROCK COMPACTED BACKFILL i=III=I III II —III' I GEOTEXTILE MIN 1' DEPTH .75"-1.5" TRAP OUTLET WASHED GRAVEL MAINTENANCE STANDARDS 1. SEDIMENT SHALL BE REMOVED FROM THE TRAP WHEN IT REACHES 1 FOOT IN DEPTH. 2. ANY DAMAGE TO THE TRAP EMBANKMENTS OR SLOPES SHALL BE REPAIRED, 4' MiN SURFACE AREA DETERMINED AT TOP OF WEIR � �RIPRAP 1' MIN OVERFLOW 1 MIN DISCHARGE TO STABILIZED CONVEYANCE, OUTLET OR -2"-4" ROCK LEVEL SPREADER /4"-1.5" WASHED GRAVEL NOTE: TRAP MAY BE FORMED BY BERM \—GEOTE OR BY PARTIAL OR COMPLETE EXCAVATION CROSS SECTION SEDIMENT TRAP DETAIL NO SCALE r2.1 MAX / SLOPE- 1` MIN —LEVEL BOTTOM 2' MIN INTERCEPTOR SWALE NO SCALE ROCK MUST COMPLETELY COVER THE BOTTOM AND SIDES OF THE DITCH 6" MIN z_ QUO u v v v v v v v v v O`�J 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0000000000000000000 000 0 0 0 O O O O O O O N —CROSS SECTION 442:1 SLOPES ia�� 0" A" Dn�V L = THE DISTANCE SUCH THAT POINTS "'- A AND B ARE OF EQUAL ELEVATION CHECK DAM SPACING CHECK DAM DETAIL NO SCALE JOINTS IN FILTER FABRIC SHALL BE SPLICED AT POSTS. USE STAPLES, WIRE RINGS, OR EQUIVALENT TO ATTACH FABRIC TO POSTS. NE 19th STREET 2"x2" BY 14 Go. WIRE OR EQUIVALENT, IF STANDARD ----% STRENGTH FABRIC USED FILTER FABRIC — 6' MAX. MINIMUM 4"x4" TRENCH / BACKFILL TRENCH WITH NATIVE SOIL OR 3/4"-1.5" POST SPACING MAY BE INCREASED WASHED GRAVEL TO 8' IF WIRE BACKING IS USED 2"x4" WOOD POSTS, STEEL FENCE NOTE: FILTER FABRIC FENCES SHALL BE POSTS, REBAR, OR EQUIVALENT INSTALLED ALONG CONTOUR WHENEVER POSSIBLE WHICH MAY BE LOCATED IN THE PLANTER STRIP OR ADJACENT SIDEWALK. SILT FENCE DETAIL NO SCALE 9 I'I W W Z Z W Z a. W 7 N Z O O (� Q Z � W 0 0 Q W Z W a C!) � Z J 9 W an 00 CC W U Q IL 2 O �i W 2 _Z O N Z W m 3 Q W W w U 0 Z Cq —cr �n J 0 Design By: JJP Drawn By: TLR Scale: 1'= 30' Date: JUNE 8, 2005 BEET 3 OF 3 T,"rov7t ^01/