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HomeMy WebLinkAboutR-439010SW 114, NE1/4, SECTION 32, T23N, R5E, WM VERTICAL DATUM EROSION AND SEDIMENT CONTROL NOTES CONSTRUCTION NOTES NAVD 88 O BENCHMARKS I. APPROVAL OF THIS EROSION AND SEDIMENT CONTROL (ESC) PLAN DOES NOT CONS71TUTE AN APPROVAL OF DEMOLISH AND REMOVE EXISTING STRUCTURE BENCHMARKS ROAD OR DRAINAGE DESIGN (E.G, SIZE AND LOCATION OF ROADS, PIPES, RESTRICTORS, O2 DEMOLISH AND REMOVE EXISTING ASPHALT PAVING. ORIGINAL BM: BM 5812: 3" BRASS DISC SET IN CONCRETE BASE OF CHANNELS, RETENTION FACILITIES, UTIUTIES, ETC.). g� ® LUMINARIE STAMPED 'KING COUNTY KC-F-8A 199V 3O DEMOLISH AND REMOVE EXISTING CONCRETE DDRIVEWAY AND SIDEWALK ® R ®T ®-® 1 MILE NORTH OF THE INTER-TION OF IOM AND SR 515 2, THE IMPLEMENTATION OF YHESE ESC PLANS AND THE CONSTRUCTION, MAINTENANCE, REPLACEMENT, IN FRONT OF BLDG #17622 AND UPGRADING OF THESE ESC FACILITIES IS THE RESPONSiBIUTY OF THE APPUCANT/ESC SUPERVISOR O4 REMOVE AND DISPOSE OF EXISTING FENCErmlomawn?mmmmmolELEVATION= 40096W UNTIL ALL CONSTRUCTION IS APPROVED, O5 REMOVE AND DISPOSE OF EXISTING UNDERGROUND ELECTRCCAI. SERVICE 0 15 30 60 3. THE BOUNDARIES OF THE CLEARING LIMITS SHOWN ON THIS PLAN SHALL BE CLEARLY FLAGGED BY A TSM-A: 'X' IN NWLY BOLT ON TRAFFIC SIGNAL BASE CONTINUOUS LENGTH OF SURVEY TAPE (OR FENCING, IF REQUIRED) PRIOR TO CONSTRUCTION. DURING THE © REMOVE AND DISPOSE OF EXISTING OVERHEAD ELECTRICAL, POLE AND YARD LIGHT SCALE: 1" = 30' IN NE'LY QUAD OF INTX OF 108TH AV SE AND 180111 ST CONSTRUCTION PERIOD, NO DISTURBANCE BEYOND THE CLEARING LIMITS SHALL BE PERMITTED, THE ELEVATION= 403.50' CLEARING LIMITS SHALL BE MAINTAINED BY THE APPLICANT/ESC SUPERVISOR FOR THE DURATION OF O CONTRACTOR TO PROVIDE TREE PROTECTION AND CLEARLY MARK TREES TO BE CONSTRUCTION. SAVED PRIOR TO CLEARING SITE, TSM-8: 'X' IN SW'LY BOLT ON LIGHT POLE BASE 4. THE ESC FACILITIES SHOWN ON THIS PLAN MUST BE CONSTRUCTED PRIOR TO OR IN CONJUNCTION WITH ALL 20`* S'LY FROM SW PROPERTY CORNER CLEARING AND GRADING SO AS 70 ENSURE THAT THE TRANSPORT OF SEDIMENT TO SURFACE WATERS, ELEVATION= 404.56' 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.). I j , , :HW. / 6. THE ESC FACU71ES SHALL BE INSPECTED DAILY BY THE APPLICANT/ESC SUPERVISOR AND MAINTAINED TO 1 ENSURE CONTINUED PROPER FUNCTIONING. WRITTEN RECORDS SHALL BE KEPT OF WEEKLY RENEWS OF THE t /' \ 77 EESC FACILITIES DURING THE WET SEASON (OCT. 7 TO APRIL 30) AND OF MONTHLY RENEWS DURING THE DRY SEASON (MAY 1 TO SEPT. 30), ,., /, >//, •/,; , , 7. ANY AREAS OF EXPOSED SOILS, INCLUDING ROADWAY RING THE DRY THAT N S NOT 3E DISTURBED FOR 1W0 DAYS DURING THE WET SEASON OR SEVEN DAYS WRING THE DRY SEASON SHALL BE IMMEDIATELY y STABILIZED VA7H THE APPROVED ESC METHODS (E.G., SEEDING, MULCHING, PLASTIC COVERING, ETC.). ANY AREA NEEDING ESC MEASURES NOT REQUIRING IMMEDIATE ATTENTION SHALL BE ADDRESSED WITHIN E=382.a6 : FIFTEEN (15) DAYS. tE_19420 .Y -NE i 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 (7) 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 B977•37" kl/� �T:-`- `"� � - / - G � � p� / OPERATION MALL NOT FLUSH SEDIMENT -LADEN WATER INTO THE DOWNSTREAM SYSTEM. ! 9TH r �- �- � 11. STABILIZED CONSTRUCTION ENTRANCES AND ROADS SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION ,SS , - G-- ----- _.s__ _ _ AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES, SUCH AS WASH PADS, MAY BE REQUIRED TO ENSURE THAT ALL PANED AREAS ARE KEPT CLEAN FOR THE DURATION OF THE PROJECT. r \. I t g1YC R4WN 12. ANY PERMANENT FLOW CONTROL FACILITY USED AS A TEMPORARY SETTLING BASIN SHALL BE MODIFIED WITH PS j i M ,T�4 a_____ I .� THE NECESSARY EROSION CONTROL MEASURES AND SHALL PROVIDE ADEQUATE STORAGE CAPACITY. IF THE 2 ____--__ ,�j 5_=ata.2-tYCP "'-' -N,E I y' FACILITY IS TO FUNCTION ULTIMATELY AS AN INFILTRATION SYSTEM, THE TEMPORARY FACILITY MUST BE GRADED r�,.�' ! � \ \ SO THAT THE BOTTOM AND SIDES ARE AT LEAST THREE FEET ABOVE THE FINAL GRADE OF THE PERMANENT Ix I t \ \ 4b FACILITY. '(OpoAW69 -/ Y I 11 WHERE STRAW MULCH FOR TEMPORARY EROSION CONTROL IS REQUIRED, IT SHALL BE APPLIED AT A MINIMUM THICKNESS OF 2 TO 3 INCHES, --SRISTOW DD. 14. PRIOR TO THE BEGINNING OF THE WET SEASON (OCT. 1), ALL DISTURBED AREAS SHALL BE RENEWED TO VOL. 63, PG 56 DENTFY YNICH ON CAN 8E SEEDED IN PREPARATION FOR THE WINTER RAINS DISTURBED AREAS SHALL Ex c9 7YAf 2 / % y (x^ ' 3 ti ' µ BE SEEDED WITHIN ONE WEEK OF THE BEGINNING OF THE WET SEASON. A SKETCH MAP OF THOSE AREAS PousM1Ot.Dx -""� I - } t i �,. ,-// , ,. r; ••.(�. TO BE SEEDED AND THOSE AREAS TO REMAIN UNCOVERED SHALL BE SUBMITTED TO THE DUES INSPECTOR. THE DOES CENT INSPECTOR CAN REWIRE SEEDING OF ADDIRONAL AREAS IN ORDER TO PROTECT 30`0`e F1.OJc W-39&73 np j I `( �I ' J jl ' j i 1 N .5HOUSEi SURFACE WATERS, ADJACENT PROPERTIES, OR DRAINAGE FACILITIES. / / / ; t i t �+ Ex 14 j 244 L SE 180 W BLDG/PAD` I - �'•� I ;i t f 171 I /� fr . t L / F0m4M.60 ��= 111 t ® { r I 1 r 3EYJSTNG TREES REMAIN �N TERRA�E D� '3 VOLIG 1 i I VOL rli2 PG. A 1, 00 IIT EL-411.2 -Ij II , IX HOUSE - D IX HOUSE 0 f BLDG FPS j FF=t1® v �< i AREA NO TREES fi SE/ 180* ^ ST ... ;r ?4 17.79 = - D I TYPE Gn iq<--411041.9 M1M=?]. 4]M-402C ss E% O33.79 IS OF HATER) � � (/ Fes' y�-�._p� -�{ ^�5' � j y�/.�LF/��•y/' �,,..-� � EXNWSE ' / `. I�%f �- / �'� j„CFVJVIN ILFC AGjLI/ V. 3 RECOMMENDED CONSTRUCTION SEQUENCE 1, PRE -CONSTRUCTION MEETING. 2. FLAG OR FENCE CLEARING LIMITS. 3. POST NOTCE OF CONSTRUCTION ACTIVITY SIGN WITH NAME AND PHONE NUMBER OF ESC SUPERVISOR. 4. INSTALL CATCH BASIN PROTECTION IF REQUIRED. 5. GRADE AND INSTALL CONSTRUCTION ENTRANCE(S). 6. INSTALL PERIMETER PROTECTION (SILT FENCE, BRUSH BARRIER, ETC.). 7. CLEAR AND ROUGH GRADE SITE. 8. MAINTAIN EROSION CONTROL MEASURES IN ACCORDANCE WITH KING COUNTY STANDARDS AND MANUFACTURER'S RECOMMENDATIONS 11. RELOCATE SURFACE WATER CONTROLS AND EROSION CONTROL MEASURES OR INSTALL NEW MEASURES SO THAT AS SITE CONDITIONS CHANGE THE EROSION AND SEDIMENT CONTROL IS ALWAYS IN ACCORDANCE WITH THE KING COUNTY EROSION AND SEDIMENT CONTROL STANDARDS. 12. COVER ALL AREAS THAT WILL BE UNWORKED FOR MORE THAN SEVEN DAYS DURING THE DRY SEASON OR TWO DAYS DURING THE WET SEASON WITH STRAW, WOOD FIBER MULCH, COMPOST, PLASTIC SHEETING OR EQUIVALENT. 13. STABILIZE ALL AREAS THAT REACH FINAL GRADE WITHIN SEVEN DAYS 14. SEED OR SOD ANY AREAS TO REMAIN UNWORKED FOR MORE THAN 30 DAYS, 15. UPON COMPLETION OF THE PROJECT, ALL DISTURBED AREAS MUST BE STABILIZED AND BEST MANAGEMENT PRACTICES REMOVED IF APPROPRIATE. STANDARD PRACTICE CODING SYSTEM: CODE BMPs CE STABILIZED CONSTRUCTION ENTRANCE PER DETAIL 1, SHEET C3. DC DUST CONTROL - O FILTER FABRIC FENCE PER DETAIL 2, SHEET C3. IP STORM DRAIN INLET PR07ECTION PER DETAIL 3. SHEET C3. PS PERMANENT SEEDING AND PLANTING a0 cv min � S z W 0) q >1d ASg1m 0 e® 0 dW � da O N ® pa I� PERMIT SET REVISIONS: APPD. �-a. 7 r � 1 r' 6 .-' /�,,_._ 5 `, � 4 gggg 71771171I g DATE: DULY 13, 2005 IX HOUSE ! I EX HOUSE I EX HOUSE DRAWN: CLK CHECKED: REVISION NUMBER: SCALE: 1"=30' PROJECT NUMBER: TCAX00000007 DRAWING FILE: ECIM002TCAX000OOD07 G SHEET NO. a OF 6 R-439010