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Plans (48) BU P2018 - 00104 i TIGARD HIGH SCHOOL BLEACHER DEMOLITION GRADING + EROSION Co RoL PLAN Camino DEMOLITION , Shaping the Future PORTLAND '317C "i' I6720 SW MACADAM AVE,STE 200,PORTLAND,OR 97219 CF1 _ . .,: ? S+ TEL:(503)419-2500 FAX(503)419-2600 www.cardra.com -� .- ,9it =a► . -a -- = = .. .. STANDARD EROSION AND SEDIMENT P A 1 2018 i CITY OF TIGARD r .. -.,-.,_ _ SW DURHAM ROAD 1--- - ----- - _ '3-1" ��v"I�i .�- •- _MI• i-111. z - - __.,_ .. DIVISIONNG NOTES. BUILDING - : w -, , ',:.,.:7,,,,,::::17,77CONTROL PLAN DRAWIi 1t' I Er - __ G �k= may;.-.... ....., r _� ° 1I __- M _ I 1. Hold a pre-construction meeting of project construction personnel that includes the inspector to discuss erosion and THE PERMITTEE IS REQUIRED TO MEET ALL THE CONDITIONS OF THE 1200C PERMIT. THIS ESCP AND OFFICE COPY I� y ``' a£: - - ' (Schedule ( )) GENERAL CONDITIONS HAVE BEEN DEVELOPED TO FACILITATE COMPLIANCE WITH THE 1200C PERMIT I ' o I ; ° sediment control measures and construction limits. A.8.c.i.(3)) -.----- Edd E 2. All inspections must be made in accordance with DEQ 1200-C permit requirements.(Schedule A.12.b and Schedule • I . `�� ,. ° I; I n 3 ° B 1) REQUIREMENTS. IN CASES OF DISCREPANCIES OR OMISSIONS, THE 1200C PERMIT REQUIREMENTS - IL< " ° t \ ' �E 3. Inspection logs must be kept in accordance with DEQs 1200-C permit requirements.(Schedule B.1.c and B.2) SUPERCEDE REQUIREMENTS OF THIS PLAN. • I ' i ° �__.._-..-.-_-___._.__�_ _ • 4. Retain a copy of the ESCP and all revisions on site and make it available on request to DEQ,Agent,or the local I DEVELOPER °L NIMARI /, I i ` municipality. During inactive periods of greater than seven(7)consecutive calendar days,the above records must I ` fi= . i" o °° ° _ DEVELOPER/COMPANY:TIGARD TUALATIN SCHOOL DISTRICT be retained by the permit registrant but do not need to be at the construction site.(Schedule B.2.c) BMP MATRIX F 0 R CON S T R U CT I 0 N PHASE S ' vv_ ( / s ° ,, _ -_ 5. All permit registrants must implement the ESCP. Failure to implement any of the control measures or practices CONTACT: ERNIE BROWN described in the ESCP is a violation of the permit.(Schedule A 8,a) ` � 0 I,, 6970 SW SANDBURG STREET REFER TO DEQ GUIDANCE MANUAL FOR A COMPREHENSIVE LIST OF i I I l° � .fi 7. ESCP revisions is onlyunder specific conditions. j ,-- - ' TIGARD, OREGON 972236. The ESCP must be accurate and reflect site conditions.(Schedule A 12 c.i) a� , '� • Submission of all ESCP revisions is not required.Submittal of the nl s e • AVAILABLE BMP'S. ° . �� to PHONE:559-907-1012 "� o Submit all necessary revision to DEQ or Agent within 10 days.(Schedule A.12.c.iv.and v) �` EMAIL: EBROWN TTSD.K12.OR.US ;;. @ 8. Phase clearing and grading to the maximum extent practical to prevent exposed inactive areas from becoming a z - / source of erosion.(Schedule A.7.a.iii) � HAUL ROAD FINAL a „ l° MO 0} 9. Identify,mark,and protect(by construction fencing or other means)critical riparian areas and vegetation including ,° ° F• important trees and associated rooting zones,and vegetation areas to be preserved. Identify vegetative buffer CLEARING CONSTRUCTION STABILIZATION Z EROSION PREVENTION MI ` °° zones between the site and sensitive areas(e.g.,wetlands),and other areas to be preserved,especially in rn ° O' PRESERVE NATURAL VEGETATION *'X X X ____ cn © I PLANNING / ENGINEERING / penmeterareas. (ScheduleA.8.c.1.(1)and(2)) _ GROUND COVER X • : . li I ° °** * * * ****** °° ° 10. before •and after g ceding oPreserve existing r construcn when tion. Identify the type cal and aof vegetative seed mite open areas. x used.(Schedule A.7 a v)te open areas when racticable HYDRAULIC APPLICATIONS X ril i SURVEYING FIRM 11. Maintain and delineate any existing natural buffer within the 50-feet of waters of the state.(Schedule A.7.b.i.and PLASTIC SHEETING - MATTING �/! ENGINEERING&SURVEY FIRM:CARDNO (2(a)(b)) DUST CONTROL X x x �� CONTACT: MATT LEWIS 12. Install perimeter sediment control,including storm drain inlet protection as well as all sediment basins,traps,and TEMPORARY/PERMANENT SEEDING X x LIMITS OF CONSTRUCTION ' ; ADDRESS:6720 SW MACADAM AVENUE,SUITE 200 barriers prior to land disturbance.(Schedule A.8.c.i.(5)) BUFFER ZONE s ° ; !/ i % 13. Control both peak flow rates and total stormwater volume,to minimize erosion at outlets and downstream channels OTHER: PHONE: 503-419-2500 \ and streambanks.(Schedule A.7.c) SEDIMENT CONTROL -a � , ���j/ , _ - FAX: 1-503-419-2600 I :,%/./../ 14. Control sediment as needed along the site perimeter and at all operational intemal storm drain inlets at all times SEDIMENT FENCE(PERIMETER) / // /•/./,i'f during construction,both internally and at the site boundary.(ScheduleA.7.d.i) SEDIMENT FENCE(INTERIOR) ` /•././././. 15. Establish concrete truck and other concrete equipment washout areas before beginning concrete work.(Schedule STRAW WATTLES ••x x x /I / i / ° A.8.c.i.(6))i r 1 , ® ° ° O) FILTER BERM g I' r.. ° „ "`- ° °4o..-: ° ° ° 0 °°÷7-f--------/-4:0 ° ' 16. Apply temporary and/or permanent soil stabilization measures immediately on all disturbed areas as grading INLET PROTECTION , ,w. t 2-.1 r-I-7--r-r-i-- -.. DEWATERING progresses.Temporary or permanent stabilizations measures are not required for areas that are intended to be left unvegetated,such as dirt access roads or utility pole pads.(Schedule A.8.c.ii.(3)) SEDIMENT TRAP 17. Establish material and waste storage areas,and other non-stormwater controls.(Schedule A.8.c.i.(7)) NATURAL BUFFER ENCROACHMENT SIT-E MAP NARRATIVE DESCRIPTIONS 18. Prevent tracking of sediment onto public or private roads using BMPs such as:construction entrance,graveled(or OTHER: NOT TO SCALE paved)exits and parking areas,gravel all unpaved roads located onsite,or use an exit tire wash.These BMPs must RUN OFF CONTROL EXISTING SITE CONDITIONS be in place prior to land-disturbing activities.(Schedule A 7.d.ii and A.8.c.i(4)) CONSTRUCTION ENTRANCE I 19. When trucking saturated soils from the site,either use water-tight trucks or drain loads on site.(Schedule PIPE SLOPE DRAIN A.7.d.ii.(5)) OUTLET PROTECTION (...--.' *EXISTING COVERED TRACK STADIUM BLEACHERS. SURFACE ROUGHENING 20. Control prohibited discharges from leaving the construction site,i.e.,concrete wash-out,wastewater from cleanout CHECK DAMS DEVELOPED CONDITIONS of stucco,paint and curing compounds.(Schedule A.6) OTHER: le -7-... 21. Use BMPs to prevent or minimize stormwater exposure to pollutants from spills;vehicle and equipment fueling, POLLUTION PREVENTION - �j maintenance,and storage;other cleaning and maintenance activities;and waste handling activities.These PROPER SIGNAGE X x x ill -7 *NEW TRACK BLEACHERS UNDER SEPARATE PERMIT, pollutants include fuel,hydraulic fluid,and other oils from vehicles and machinery,as well as debris,fertilizer, HAZ WASTE MGMT x x x jor 'IL-414 �, pesticides and herbicides,paints,solvents,curing compounds and adhesives from construction operations. SPILL KIT ON-SrrEx x x NATURE OF CONSTRUCTION ACTIVITY AND ESTIMATED TIME (Schedule A.7.e.i.(2)) CONCRETEWASHOUTAREA TABLE 22. Implement the following BMPs when applicable:written spill prevention and response procedures,employee training OTHER:/OO on spill prevention and proper disposal procedures,spill kits in all vehicles,regular maintenance schedule for RTz - vehicles and machinery,material delivery and storage controls,training and signage,and covered storage areas for #, ir / q/VO t ( V 'i *CLEARING (APRIL 13-16,2018) waste and supplies.(Schedule A.7.e.iii.) FINAL STABILIZATION (APRIL 16-20,2018) 23. Use water,soil binding agent or other dust control technique as needed to avoid wind-blown soil.(Schedule A 7.a.iv) * SIGNIFIES ADDITIONAL BMP'S REQUIRED FOR WORK WITHIN 50'OF WATER OF THE STATE. TOTAL SITE AREA - 1,894,860 SF -43.5 ACRES 24. The application rate of fertilizers used to reestablish vegetation must follow manufacturer's recommendations to ** SIGNIFIES BMP THAT WILL BE INSTALLED PRIOR TO ANY GROUND DISTURBING ACTIVITY. �Q,ED PROFFS minimize nutrient releases to surface waters.Exercise caution when using time-release fertilizers within any � I S'p ze ft 1, waterway riparian zone.(Schedule A.9.b.iii) 78 NFF� �9 TOTAL DISTURBED AREA = 38,888 SF = 0.89 ACRES 25. If an active treatment system(for example,electro-coagulation,flocculation,filtration,etc.)for sediment or other • gal 786282018 0 fl i, '� 111111L44 ollutant removal is em to ed,submit an o eration and maintenance lan includin s stem schematic location of •P P Y P P ( 9 Y S2naturesystem,location of inlet,location of discharge,discharge dispersion device design,and a sampling plan and10:10: '00' SITE SOIL CLASSIFICATION: OREGONfrequency)before operating the treatment system.Obtain plan approval before operating the treatment system. y i 1 pip Operate and maintain the treatment system according to manufacturer's specifications.(Schedule A,9.d) �9 v o 9 200 �5 ALOHA SILT LOAM RATING C/D 26. Temporarily stabilize soils at the end of the shift before holidays and weekends,if needed.The registrant is THEW C •\--\- __, r` m HUBERLY SILT LOAM RATING C/D responsible for ensuring that soils are stable during rain events at all times of the year.(Schedule A 7.b) J EXPIRES:12/31/2018 �NORo 0 27. As needed based on weather conditions,at the end of each workday soil stockpiles must be stabilized or covered, g*I6E 6 SW DURHAM RD () ��� 1411. ON-SITE SOILS HAVE A MODERATE TO HIGH EROSION POTENTIAL.ALL FILL or other BMPs must be implemented to prevent discharges to surface waters or conveyance systems leading to `uEI �I0 s, MATERIAL SHALL BE GENERATED ON-SITE FROM GRADING EXCAVATION AND surface waters.(Schedule A 7.e.ii.(2)) %�/�i, -w 28. Construction activities must avoid or minimize excavation and bare ground activities during wet weather.(Schedule a � � UTILITY TRENCH SPOILS, ca A.7.a.i) SW TUALATIN RDcr 29. Sediment fence:remove trapped sediment before it reaches one third of the above ground fence height and before Ra. a. ECEIVING WATER BODIES: fence removal.(ScheduleA.9.c.i) PERMITTEE'S SITE INSPECTOR: SPENCER COOK f- TIGARD TUALATIN SCHOOL DISTRICT 141 i 30. Other sediment barriers(such as biobags):remove sediment before it reaches two inches depth above ground %� NEAREST WATER BODY:TUALATIN RIVER height and before BMP removal.(Schedule A.9.c.i) COMPANY/AGENCY: CARDNO 2 _ 31. Catch basins:clean before retention capacity has been reduced by fifty percent.Sediment basins and sediment PHONE: 503-419-2500 TIGARD El I G H SW TUALATIN SNERWOOD P.O �`/�� traps:remove trapped sediments before design capacity has been reduced by fifty percent and at completion of FAX: 503-419-2600 ;;` project. (Schedule A.9.c.iii&iv) w S C H 0 0 L TRACK t PROJECT E-MAIL: spencer.cook@cardno,com �� 32. Within 24 hours,significant sediment that has left the construction site,must be remediated. Investigate the cause @ Q.:(:. �\ of the sediment release and implement steps to prevent a recurrence of the discharge within the same 24 hours. DESCRIPTION OF EXPERIENCE:WASHINGTON STATE DEPARTMENT OF ECOLOGY CERTIFIED EROSION& J g L EAC H E RS LOCATION Any in-stream clean-up of sediment shall be performed according to the Oregon Division of State Lands required SEDIMENT CONTOL LEAD (CESCL)CERTIFICATION. CESCL#ECO-3-8261602 -----"2 / I timeframe.(Schedule A.9.b.i) 0 33. The intentional washing of sediment into storm sewers or drainage ways must not occur.Vacuuming or dry REM OVAL sweeping and material pickup must be used to cleanup released sediments.(Schedule A.9.b.ii) 34. The entire site must be temporarily stabilized using vegetation or a heavy mulch layer,temporary seeding,or other VICINITY I\/1AP NOT TO SCALE method should all construction activities cease for 30 days or more.(Schedule A.7.f.i) Z 35. Provide temporary stabilization for that portion of the site where construction activities cease for 14 days or more 0 with a covering of blown straw and a tackifier,loose straw,or an adequate covering of compost mulch until work SHEET INDEX resumes on that portion of the site.(Schedule A.7.f.ii) 9000 SW DURHAM RD. 36. Do not remove temporary sediment control practices until permanent vegetation or other cover of exposed areas is Z TIGARD,OR.97224 established.Once construction is complete and the site is stabilized,all temporary erosion controls and retained 0 PROJECT LOCATION: PROPERTY DESCRIPTION: soils must be removed and disposed of properly,unless doing so conflicts with local requirements.(Schedule EROSION AND SEDIMENT CONTROL PLANS JOB NO: 16992.00 A.8.c.iii(1)and D.3.c.ii and iii) City of Tigard ",°.,.,... .,. •. Cf) ISSUE DATE: APRIL 11,2018 NEAR THE INTERSECTION SW DURHAM RD AND "„,•,.°.._ .' TAX LOTS 2S114AA00100(WASHINGTON COUNTY TAX MAP INSPECTION FREQUENCY Building Division """"-°•�' �' � O SW 92ND AVE,WASHINGTON COUNTY,OREGON 2S114AA)LOCATED IN THE NORTHEAST OF SECTION 14, E O.O ESCCOVER 13125 SW Hall Blvd.,Tigard,OR 97223 Jurisdiction Stamp Area LATITUDE=45.4023620, LONGITUDE= 122.768733 TOWNSHIP 1 WEST, RANGE 2 SOUTH,WILLAMETTE MERIDIAN; SITE CONDITION MINIMUM FREQUENCYLOCAL AGENCY-SPECIFIC EROS I 0 N Esco.1 ESC GENERAL NOTES ;;. 503-718-2439 ,,,�.,,..,.,,,. ., CL., WASHINGTON COUNTY, OREGON.ZONING R-4.5- DAILY WHEN STORMWATER RUNOFF, INCLUDING RUNOFF v++ww.tigard-orgov "::":;`:;:':::::;: w LOW-DENSITY RESIDENTIAL DISTRICT. FROM SNOW MELT, IS OCCURRING. ESCO.2 OVERALL SITE PLAN CONTROL NOTES• °es ATTENTION EXCAVATORS: 1. ACTIVE PERIOD ESC1 .0 BLEACHER DEMOLITION, GRADING & EROSION CONTROL PLAN AT LEAST ONCE EVERY FOURTEEN (14)CALENDAR DAYS 0 REGARDLESS OF WHETHER STORMWATER RUNOFF IS 1. If vegetative seed mixes are specified,seeding must take place no later that September 1;the type ESC2.0 ESC DETAILS • O VED ,6-' z OREGON LAW REQUIRES YOU TO FOLLOW RULES ADOPTED BY THE OREGON UTILITY NOTIFICATION OCCURRING. and percentages of seed in the mix must be identified on the plans. CENTER.THOSE RULES ARE SET FORTH IN OAR 952-001-0010 THROUGH OAR 952-001-0090.YOU MAY 2, PRIOR TO THE SITE BECOMING INACTIVE OR ONCE TO ENSURE THAT EROSION AND SEDIMENT 2. All pumping of sediment laden water shall be discharged over an undisturbed,preferably vegetated y/./a7//d 0 OBTAIN COPIES OF THESE RULES FROM THE CENTER BY CALLING 503-232-1987. IF YOU HAVE ANY IN ANTICIPATION OF SITE INACCESSIBILITY. CONTROL MEASURES ARE IN WORKING ORDER. ANY area,and through a sediment control BMP i.e.(filter bag). OFFICE COPY Q QUESTIONS ABOUT THE RULES,YOU MAY CONTACT THE CENTER.YOU MUST NOTIFY THE CENTER AT NECESSARY MAINTENANCE AND REPAIR MUST BE MADE 3. All exposed soils must be covered during the wet weather period,October 01 -May 31. IDL LEAST TWO BUSINESS DAYS, BEFORE COMMENCING AN EXCAVATION.CALL 503-246-6699. PRIOR TO LEAVING THE SITE. ,a-ui/°�o/`f. - 00/0V 0 THAN FOURTEEN(14) ONCE EVERY MONTH. 9e00 sG.� - 2 ESC COVER 3. INACTIVE PERIODS GREATER CONSECUTIVE CALENDAR DAYS. z SHEET 0 4. PERIODS DURING WHICH THE SITE IS INACCESSIBLE IF PRACTICAL, INSPECTIONS MUST OCCUR DAILY AT A � i DUE TO INCLEMENT WEATHER. RELEVANT AND ACCESSIBLE DISCHARGE POINT OR �\Oar 14 1 l5<j q DOWNSTREAM LOCATION. CITY OF TIGARD 0 5. PERIODS DURING WHICH DISCHARGE IS UNLIKELY MONTHLY. RESUME MONITORING IMMEDIATELY UPON Approved by Planning DUE TO FROZEN CONDITIONS. MELT, OR WHEN WEATHER CONDITIONS MAKE Date: -- + t.€2 2 r DISCHARGES LIKELY. Initials: UJ ES0 .0 0 __ _.-..._._.... PRE-CONSTRUCTION, CLEARING, AND DEMOLITION NOTES: GRADING, STREET AND UTILITY EROSION AND SEDIMENT CONSTRUCTION NOTES: EROSION AND SEDIMENT CONTROL BMP IMPLEMENTATION: 1.ALL BASE ESC MEASURES(INLET PROTECTION, PERIMETER SEDIMENT CONTROL,GRAVEL 1.SEED USED FOR TEMPORARY OR PERMANENT SEEDING SHALL BE COMPOSED OF ONE OF THE 1.ALL BASE ESC MEASURES(INLET PROTECTION, PERIMETER SEDIMENT CONTROL,GRAVEL CONSTRUCTION ENTRANCES,ETC.)MUST BE IN PLACE, FUNCTIONAL,AND APPROVED IN AN FOLLOWING MIXTURES, UNLESS OTHERWISE AUTHORIZED: CONSTRUCTION ENTRANCES, ETC.)MUST BE IN PLACE,FUNCTIONAL,AND APPROVED IN AN (1.1) Carers° INITIAL INSPECTION, PRIOR TO COMMENCEMENT OF CONSTRUCTION ACTIVITIES. A. VEGETATED CORRIDOR AREAS REQUIRE NATIVE SEED MIXES. SEE RESTORATION PLAN FOR INITIAL INSPECTION, PRIOR TO COMMENCEMENT OF CONSTRUCTION ACTIVITIES. Shaping the Future APPROPRIATE SEED MIX. (UNDER SEPARATE COVER) 2.SEDIMENT BARRIERS APPROVED FOR USE INCLUDE SEDIMENT FENCE,BERMS B. DWARF GRASS MIX(MIN. 100 LB./AC.) 2.ALL"SEDIMENT BARRIERS(TO BE INSTALLED AFTER GRADING)"SHALL BE INSTALLED PORTLAND IMMEDIATELY FOLLOWING ESTABLISHMENT OF FINISHED GRADE AS SHOWN ON THESE PLANS. srloswneacaDanlavE srE2oo,PORTLAND,OR 97219 CONSTRUCTED OUT OF MULCH, CHIPPINGS, OR OTHER SUITABLE MATERIAL,STRAW WATTLES, 1. DWARF PERENNIAL RYEGRASS(80%BY WEIGHT) TEL:(503)419-2500 FAX(503)419-2600 www.grdno.00m OR OTHER APPROVED MATERIALS. 2.CREEPING RED FESCUE(20%BY WEIGHT) 3. LONG TERM SLOPE STABILIZATION MEASURES"INCLUDING MATTING"SHALL BE IN PLACE C.STANDARD HEIGHT GRASS MIX(MIN. 100LB./AC.) 3. SENSITIVE RESOURCES INCLUDING, BUT NOT LIMITED TO,TREES,WETLANDS,AND RIPARIAN 1.ANNUAL RYEGRASS(40%BY WEIGHT) OVER ALL EXPOSED SOILS BY OCTOBER 1. PROTECTION AREAS SHALL BE CLEARLY DELINEATED WITH ORANGE CONSTRUCTION FENCING 2.TURF-TYPE FESCUE(60%BY WEIGHT) 4.THE STORM WATER FACILITY SHALL BE CONSTRUCTED AND LANDSCAPED PRIOR TO THE OR CHAIN LINK FENCING IN A MANNER THAT IS CLEARLY VISIBLE TO ANYONE IN THE AREA. NO STORM WATER SYSTEM FUNCTIONING AND SITE PAVING. ACTIVITIES ARE PERMITTED TO OCCUR BEYOND THE CONSTRUCTION BARRIER. 2.SLOPE TO RECEIVE TEMPORARY OR PERMANENT SEEDING SHALL HAVE THE SURFACE ROUGHENED BY MEANS OF TRACK-WALKING OR THE USE OF OTHER APPROVED IMPLEMENTS.SURFACE 5. INLET PROTECTION SHALL BE IN-PLACE IMMEDIATELY FOLLOWING PAVING ACTIVITIES. 4.CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION ROUGHENING IMPROVES SEED BEDDING AND REDUCES RUN-OFF VELOCITY. AND MAINTAINED FOR THE DURATION OF THE PROJECT. ADDITIONAL MEASURES INCLUDING, BUT NOT LIMITED TO,STREET SWEEPING,AND VACUUMING, MAY BE REQUIRED TO INSURE 3. LONG TERM SLOPE STABILIZATION MEASURES SHALL INCLUDE THE ESTABLISHMENT OF PERMANENT THAT ALL PAVED AREAS ARE KEPT CLEAN FOR THE DURATION OF THE PROJECT. VEGETATIVE COVER VIA SEEDING WITH APPROVED MIX AND APPLICATION RATE. 5. RUN-ON AND RUN-OFF CONTROLS SHALL BE IN PLACE AND FUNCTIONING PRIOR TO 4.TEMPORARY SLOPE STABILIZATION MEASURES SHALL INCLUDE:COVERING EXPOSED SOIL WITH BEGINNING SUBSTANTIAL CONSTRUCTION ACTIVITIES. RUN-ON AND RUN-OFF CONTROL PLASTIC SHEETING,STRAW MULCHING,WOOD CHIPS,OR OTHER APPROVED MEASURES. MEASURES INCLUDE:SLOPE DRAINS(WITH OUTLET PROTECTION),CHECK DAMS,SURFACE ROUGHENING,AND BANK STABILIZATION. 5.STOCKPILED SOIL OR STRIPPINGS SHALL BE PLACED IN A STABLE LOCATION AND CONFIGURATION. DURING"WET WEATHER"PERIODS,STOCKPILES SHALL BE COVERED WITH PLASTIC SHEETING OR STRAW MULCH.SEDIMENT FENCE IS REQUIRED AROUND THE PERIMETER OF THE STOCKPILE. 6. EXPOSED CUT OR FILL AREAS SHALL BE STABILIZED THROUGH THE USE OF TEMPORARY SEEDING THESE EROSION AND SEDIMENT CONTROL PLANS ASSUME "DRY WEATHER" AND MULCHING, EROSION CONTROL BLANKETS OR MATS, MID-SLOPE SEDIMENT FENCES OR WATTLES, CONSTRUCTION. "WET WEATHER" CONSTRUCTION MEASURES NEED TO BE OR OTHER APPROPRIATE MEASURES.SLOPES EXCEEDING 25%MAY REQUIRE ADDITIONAL EROSION APPLIED BETWEEN OCTOBER 1ST AND MAY 31ST. CONTROL MEASURES. 7.AREAS SUBJECT TO WIND EROSION SHALL USE APPROPRIATE DUST CONTROL MEASURES INCLUDING THE APPLICATION OF A FINE SPRAY OF WATER,PLASTIC SHEETING,STRAW MULCHING,OR OTHER APPROVED MEASURES. 8.CONSTRUCTION ENTRANCES SHALL BE INSTALLED AT THE BEGINNING OF CONSTRUCTION AND MAINTAINED FOR THE DURATION OF THE PROJECT.ADDITIONAL MEASURES INCLUDING,BUT NOT LIMITED TO,TIRE WASHES, STREET SWEEPING,AND VACUUMING MAY BE BE REQUIRED TO INSURE THAT ALL PAVED AREAS ARE KEPT CLEAN FOR THE DURATION OF THE PROJECT. 9.ACTIVE INLETS TO STORM WATER SYSTEMS SHALL BE PROTECTED THROUGH THE USE OF APPROVED INLET PROTECTION MEASURES.ALL INLET PROTECTION MEASURES ARE TO BE REGULARLY INSPECTED AND MAINTAINED AS NEEDED. 10.SATURATED MATERIALS THAT ARE HAULED OFF-SITE MUST BE TRANSPORTED IN WATER-TIGHT TRUCKS TO ELIMINATE SPILLAGE OF SEDIMENT AND SEDIMENT-LADEN WATER. 11.AN AREA SHALL BE PROVIDED FOR THE WASHING OUT OF CONCRETE TRUCKS IN A LOCATION THAT DOES NOT PROVIDE RUN-OFF THAT CAN ENTER THE STORM WATER SYSTEM. IF THE CONCRETE WASH-OUT AREA CAN NOT BE CONSTRUCTED GREATER THAN 50'FROM ANY DISCHARGE POINT, SECONDARY MEASURES SUCH AS BERMS OR TEMPORARY SETTLING PITS MAY BE REQUIRED.THE WASH-OUT SHALL BE LOCATED WITHIN SIX FEET OF TRUCK ACCESS AND BE CLEANED WHEN IT REACHES 50%OF THE CAPACITY. 12.SWEEPINGS FROM EXPOSED AGGREGATE CONCRETE SHALL NOT BE TRANSFERRED TO THE STORM WATER SYSTEM.SWEEPINGS SHALL BE PICKED UP AND DISPOSED IN THE TRASH. 13.AVOID PAVING IN WET WEATHER WHEN PAVING CHEMICALS CAN RUN-OFF INTO THE STORM WATER SYSTEM. 14. USE BMPs SUCH AS CHECK-DAMS, BERMS,AND INLET PROTECTION TO PREVENT RUN-OFF FROM REACHING DISCHARGE POINTS. 15.COVER CATCH BASINS, MANHOLES,AND OTHER DISCHARGE POINTS WHEN APPLYING SEAL COAT, /#\ TACK COAT, ETC.TO PREVENT INTRODUCING THESE MATERIALS TO THE STORM WATER SYSTEM. > ,\cQ,ND I NR�FFss/off �• 78628PE Lt, tal Matt Le rr 2018.04.11 atu51Ed Q9:57 J94/ 0 9. 2 � \5 gITyFW EXPIRES:12/31/2018 I- TIGARD TUALATIN SCHOOL DISTRICT TIGARD HIGH Le SCHOOL TRACK BLEACHERS REMOVAL z O V 9000 SW DURHAM RD. z TIGARD,OR.97224 Cl) JOB NO: 16992.00 vISSUE DATE: APRIL 11,2018 NON Jurisdiction Stamp Area L.I. w W 0 NQN 1.1. 0 ESC GENERAL NOTES O F J 0 E w SCO . 1 a _ _ 8 o <Mr,02, ° CSr�dno TAX LOT TAX LOT TAX LOT , � TAX LOT TAX LOT TAX LOT TAX LOT TAX LOT TAX LOT TAX LOT TAX LOT TAX LOT TAX LOT TAX LOT - 2S111DC 2S111DC 2S111DC ►..� 2S111DC 2S111DC 2S111DC 2S111DC 2811100 2S711DD 2S71100 2S711DD 2S711DD 2S11100 2811100 #12100 #12000 *14700 g #14300 #14400 #14500 #14800 *5100 *5200 #5300 95400 #5500 #5600 #5700 �, e.TP V _ _K I # ►J,�_4108.1.111:; Shaping the Future L,r• i r�_wp,-- n_ = ■✓•• 1:.' i •4 I At mac. �� =. ►:4 v' ►# fi�4�/J . _ _- _ -_- • ._-_ --,a __-.y . _.--sscmr. -�•4:. .7r -- -•`�.• ..- T —... i�i,�l- Y •'4JN— r•.•lC�,!_Y� •— W ..___ 5�. 6720 SWMACADAMA 97219 . .-:,=---i--:.V■OS;eiU�tg• i ;. .�.*ti :I ..• ."-`--.7-; 7•A---= --_!--..70--_------_ --- ,� • _ t...0. -• PORTLAND sTFzoo•PORTLAND, 1�� 1i1 1 I I Iii `ti lll►"G ! � .-�..• Cl G G G- 3�2._ .G .- - wwwraNno.00m FAX 1 19-2600 r�� i- - - _ r,w e . • ,ch s. 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LIMITS OF CONSTRUCTION "•'WATp 2Et TI G A R D H I G H wvi SCHOOL TRACK ) I ;4er x ` , BLEACHERS , •, 0 -,-,, , ," I �°` w REM OVAL ......in. tp 1,i ,, „. : Oi* z 5° O , c O I 0 / O / 5°/ 9000 SW DURHAM RD. � x xl, z TIGARD,OR.97224 7 �— JOB NO: 16992.00 GRASS 50F113111. 3 0 I `IID ° iii �/J ISSUE DATE: APRIL 11,2018 s° `Spl I 0 / 1 O I ' ,.O ON Jurisdiction Stamp Area 1 I 1 L.L. d IC W (0 X51 O1 +# ° Or 1 1 14I I 1 O► 0 06 O 1 I GFGP GA (SP .....-;-s` P Spl I I ° iimie O ■ • p ---- -- -1— I ---� Z 0 0 0 0 --- -• • - O - � -•...., O1000OO 0 0000 � 00000OOam - • Jii, OVERALL SITE 0 PLAN I I I I I I I I I I I I I I I \ I I { I I I I I I I I I { I I .4114 Z MF O I- SCALE: 1"=80' O 1.1. -- 80' 40' 0 80' Vu ESC0 .2 in & '`: Iv., -''' BASEBALL FIELD rs "',,5 : \N c> . I � /wn Iiii : ,< a 5. �" 71401rc (L G ,.. 4/01, AK v gyp, ;� • I 11 , --- 0 (..r) e9z0'� 1g&- - ,•. ----- - �� ��° � � t� � , � -SWDURMRD.--.'."_'.�-.� d+ C_ __ .� S �n v _ _ PORTLAND Mil*-31 l ' • ` r4* \\ n� 0 r '= [ Ps 6720 SW MACADAM STE200,PORTLAND,OR 97219 �, , v7 F (503)419-2600 * ...„,. ,, ,,i, I tt�".. m �, �> VVV wit( 419 2500 AK pc �+tl � ./' �. �� I�_ _ '� °""� BOLLARDS X, W�,L�b�D. PRESS ` I�iHN}$1P ' �` BOX ■ Ci Q cg x _.1 1 . ...mit 11-1e1-0:,ilo> ,,w,-,--,',784.0, mi• IlMi N, *z 0 a.03-.., \ , hi di (:) co R ? I; * o SIIo 10 v) x dii6 / . It' 1 , w 1 u j �G�1111M11 71- • . (� 0 , U.? y C:::*: '''',.'[:,,' Q ,,,_ 0.,''''''* 0 / r I 0 CD KEY MAPIll ° L,j w. \ °SCALE: 1400' ° X I ° w 0/ 0 , OW L- j J 0 r v� I F U 413 II * rgs CI C.0 * * ** * * L 1 7 ' 0 cc h F11111 - • il. _sr.: _0 0 0 * * * * * 11.HMI WAN 1 i OM M NMI . - i 1 (0.1 Pq :::::.:.:.:::.:::•:.:.: )` I 4 , ' o4 ' o r .i:13 : ). // `�..,✓ s......, + Q? LEGEND •1 ,:. ,„:,:,:,:,:,:„,:::,: , 1 ii:ill , ,,,,,,,,l- 1/ 1 , ,q4/' -',',1; * _ LIMITS OF DEMOLITION* I _, ,.. :,:,„:.:,:....::::: , ■ `\ r:!!!L:::'!:::''::!!!!!!!L:'::::....4.114, EXISTING GROUND CONTOUR(2 FT) 198 ' ;�;II''7'i' l. �� I i „ 1ir. ♦• 6 I i - va-.411. . _Tigi :`;::: .. 1'1 , EXISTING GROUND CONTOUR(10 FT) -Zoo -i!: .! I♦� At IEROSION CONTROL NOTES '4r' ' • r PROPOSED GROUND CONTOUR(2 FT) 1ss O.•� ot, I -12' - , m �oR� o GEOTEXTILE FABRIC OVER EXISTING GRASS SURFACE.EXTEND FABRIC 2' /♦.♦ `l _ r••ir. ,♦� i i 0 I€ PROPOSED GROUND CONTOUR(10 FT) 200v�•!�•r••'",�♦#'�`� _ BEYOND EDGE OF DRIVE AISLE.PROVIDE 12"OF 3/4%0"BASE ROCK. , •ante` i♦, •- ` �' ca`TP ..(ccs-‘\U)PROFF .•`• tr �4' .- r. •. X a .._..,.,,..- ..._ __._ ___ X \5�� GINE s`C% SEDIMENT BARRIER X X- 2 �•r!i' > '♦� ��' �N F� - PROPOSED STAGING AREA. •,., ♦♦, .•.ft ii•f•♦♦ 4 1 SAND ;. D'. �:al 7862 P l -.`'}. matt L- - ' g ORANGE CONSTRUCTION FENCE 0 0 3 INSTALL TREE PROTECTION FENCING AT THE EDGE OF EXISTING DRIP LINE. ,•.�:i•! r ♦�♦♦ •r••;.-.•,• 2018.04.11 ARBORIST SHALL PERFORM SEMIMONTHLY(TWICE MONTHLY)SITE i•}I i:�•r•-�.♦.# SAND 1 • r TREE PROTECTION FENCE O O 0 INSPECTIONS FOR TREE PROTECTION MEASURES DURING PERIODS OF • "''..i' ,♦• •i•!'i:.�, jam II d c. 1 ACTIVE SITE DEVELOPMENT AND CONSTRUCTION. e-1r••,t�0♦♦� t) tn°a '�9 0 9• ��� STRAW WATTLES :!..!.... ...•..!.•!�!..!�.!.!. 4 INSTALL STRAW WATTLES.SEE DETAILS NO.880 ON SHEET ESC3.0. r�•�•(Ott!'♦♦•♦ c" ` SD G �,s'i• ' �*- — II: � ' �°°'� EXPIRES:12/31/2018 5 DEMOLISH EXISTING 2500 SF COVERED BLEACHERS. DISPOSE OFF-SITE. #•••�..--,' ', ' ` ' ` STAGING AREA N...: I. � �.��!� �- �' /� 50 ' 6 SAWCUT AND PRESERVE EXISTING ASPHALT AND STRUCTURE SOUTH OF �,4 4.•1•0'••; �# ( i `,° ), • COVERED BLEACHERS. •I.— •.r•.';.4i' - '* ,��� /I 01 9 L L. LTL ror�. ti!. L r.••i•. # / 4 �a�a�a•z����t��, 7 SAWCUT AND PRESERVE EXISTING ASPHALT NORTH OF COVERED I •r r♦i� CONSTRUCTION ENTRANCE ;•�.,•-,•� •�_ •�_�..•Y. rl .�.�.•♦♦ I— TIGARD TUALATIN SCHOOL DISTRICT ►:•:e 1•-•-•-•-•, BLEACHERS. •L• , �� P •ir. L:t��� O.7 CO 8 INSTALL CONSTRUCTION ENTRANCE.SEE DETAIL NO.855 ON SHEET ESC3.0. '''•�' �� -�•r- TIGARD HIGH 0 INLET PROTECTION ` _ ' CONTRACTOR TO REVIEW NECESSITY OF CONSTRUCTION ENTRANCE WITH , ,��♦ , _ ' k X ON-SITE EROSION CONTROL INSPECTOR, IF TRUCK TRAFFIC IS NOT EXPOSED i r.tob!•'�i�1� �1 r GpGp X w rtS.4 SCHOOL TRACK DRAINAGE FLOW DIRECTION TO BARE SOIL,CONSTRUCTION ENTRANCE MAY NOT BE NECESSARY. ,�i•�yi ♦ f 44'424•;'•♦i O 9 INSTALL TYPE 4 INLET PROTECTION.SEE DETAIL NO.915 ON SHEET ESC3.0. ,:;%•r!? 4. :•,�� •� ' J BLEACHERS .. ECO-PANS(CONCRETE WASHOUT) X '` �� GRASSFIEODFTBALL `,••, • 9 ��=�• • •� ..I REMOVAL ::moi'►♦i 0 50 ••�••' I 4.4LSI ' z •At:, ►♦ TREES TO BE REMOVED ►�' �' "� O �i�r! �♦� ' II I • 9000 SW DURHAM RD. ' Pl`' X .ir!tAtv: ►♦� C3; / Z TIGARD,OR.97224 •,.iii ►♦1 0 '�` ' ♦� I • JOB NO: 16992.00 ir ` I Priv! ♦`■ ■ CO ISSUE DATE: APRIL 11,2018 ,• !11 • ►�� f' O/ Jurisdiction Stamp Area 0 �},�' ►� X rDUG ♦ •' #/{, � � :��p1 $ 1 � ►�! 1 OUT 1 w ,. 2424..: ,tet bill . 24: 24 A � 0 0 w I` 2 AoirN,4 Ar Vill 1 - .,tet -y ' a"' ' - �.-• �.. ,',4 •* EXISTING GRAVEL ROADTM ai 4 -.,.-'vTY•. �C•.,yn v,itt,C4 u ,�i `�'; "., yet ' 'itil't.._�'..ei" ,t.,I,P ,aa,...:: L. .'�.•24441" A* j ^�� owl . � — — - - - — — - -� .:_,_.._._._._. ._.� 0 BLEACHER a fp 00 IIII! !t:J;;it0g141taiqlt'$°l;Vri, 17D • ; • •♦ • • .r Y "7" • .�` 4idbi �. Lt9'YE iySJ:t'67� �3 STP C5"%Xd ,. �� .,� ! • „ •4."4.04.40N.•4' • .µ w*. r w .r► v,.� ° 2424 }fIiON €w ":ft� ro =OW a > CXR�VIX. ♦ •. te. .*a, �' •tiA 1k s » „� OM. GY4Ipd. CA7HZX SI I ci O •�".+r ;3•,1►�l�',, • .�.1►.�-. •, :Ir�ri �� „� ,�,r.,M,, ,,. .,�+.•2424 � q � m � � e • y...#-2424., �"y , �+` Y411E - -��y..rd..�. �,�................, ., ,...... ,,�<..z.�. "2424 2424 •., ,2424. . ,. '�'" wx "U-•r nK ..r,m,. �.,..a,��,�,m �,.,.., ,� •:� .......»,.,�2424.._.___.. .,... .,..��.w.....;,. .,, ., ,, ., � . . .�: �; . � � ,.` . ,r ..±r' . 24,24. , ,E r.�1� !'ri�� , ._ __ .: - __ ����� :._�:.,......:...� ,,�., 2424... �...�"t• � V — �=�.�1•'a.,�_.�°.�^..�-'�,��:�y.�;'��..,-�.� .��.-G; .-.a. .�_ :n....._, _ 2424,_:.. .,. ., �e,..a�-, - .�,aa.• �... 2424,�«,...._... 2424 (n z GRADING & Q"illiill;:::: EROSION CONTROL - VW ~_11 PLAN O SCALE: 1'1=40' w ESC 1 .0 rT!Iiiiii 0 40' 20' 0 40' (d, Camino FOR FURTHER INFORMATION Shaping the Future ON DESIGN CRITERIA SEE PORTLAND CHAPTER 4 OF CLEAN WATER 6720 SW MACADAM AVE,STE 200,PORTLAND,OR 97219 SERVICES EROSION PREVENTION /. TEL:(so3)ars-2500 FAX(503)419-2600 AND SEDIMENT CONTROL O\�� / www.cardrw.com PLANNING AND DESIGN MANUAL �-\ S P S QP�1 GG�S • ••:. 0,4/41!* Q tea. . .D. .pQ• • : •••:.0 -:4 RADIUS - 25' MIN. v' :p• • a .D• Jam\. :o. E S CLEAN PIT RUN OR 3'— 6` CLEAN ROCK QcO'• OF �GR�S SUBGRADE REINFORCEMENT \r\Ge GEOTEXTILE, AS REQUIRED P� 8' MIN. DEPTH *20' MIN. FOR SINGLE FAMILY AND DUPLEX RESIDENTIAL GRAVEL CONSTRUCTION ENTRANCE CURB RAMP a PAVEMENT o � : '.• YYi� / / G / I. G• • LIBILIMI • ▪ ''"'.,,• -:.i'7.]::tiff.,.•... .:..:n.di•11. ,:i. e• -. NOTES: 1. THE ENTRANCE SHALL BE MAINTAINED IN A CONDITION THAT WILL PREVENT TRACKING OR FLOWING OF SEDIMENT ONTO PUBLIC RIGHT—OF—WAYS. THIS MAY REQUIRE TOP DRESSING, REPAIR AND/OR CLEAN OUT OF ANY MEASURES USED TO TRAP SEDIMENT. 2. WHEN NECESSARY, WHEELS SHALL BE CLEANED PRIOR TO ENTRANCE ONTO PUBLIC RIGHT—OF— WAY. 3. WHEN WASHING IS REQUIRED, IT SHALL BE DONE ON AN AREA STABILIZED WITH CRUSHED STONE THAT DRAINS INTO AN APPROVED SEDIMENT TRAP OR SEDIMENT BASIN. 4. WHERE RUNOFF CONTAINING SEDIMENT LADEN WATER IS LEAVING THE SITE VIA THE CONSTRUCTION ENTRANCE, OTHER MEASURES SHALL BE IMPLEMENTED TO DIVERT RUNOFF THROUGH AN APPROVED FILTERING SYSTEM. 5. DIMENSIONS SINGLE FAMILY 20' LONG BY 20' WIDE 8" DEEP OF 3/4" MINUS CLEAN ROCK. COMMERCIAL 50' LONG BY 20' WIDE 3-6" CLEAN ROCK, GOVERNING AUTHORITY MAY REQUIRE GEOTEXTILE FABRIC TO PREVENT SUB—SOIL PUMPING. CONSTRUCTION ENTRANCE CeanWater Services — DRAWING NO. 855 REVISED 12-16 At 5<c'o p PROFes, FOR FURTHER INFORMATION c, G I N FF ON DESIGN CRITERIA SEE <c, h) q MAY BE USED SHORT TERM — CHAPTER 4 OF CLEAN WATER 78628PE W/ UTILITY WORK AND W/ ,,,,� .�i�= r`N SERVICES EROSION PREVENTION PHASING OF DEVELOPMENT 1�yY;���:���"'''� AND SEDIMENT CONTROL Ig1tG1 Matt Lewis is :���i y z:aZ mmizmasimpromstfig PLANNING AND DESIGN MANUAL �,2(0�1�8.0' fi l'ai _-`__ a -11 A 5'.�;Ir 1et ,,, '" 4/1/. 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INSTALL THE WATTLES IN A 2” DEEP TRENCH, 0 FOR FURTHER INF❑RMATI❑N INSURING THAT NO GAPS EXIST BETWEEN THE 3. WHEN USING 30" BIO—BAGS TO ❑N DESIGN CRITERIA SEE SOIL AND THE BOTTOM OF THE WATTLE.. THE Q PROTECT A CATCH BASIN YOU MUST CHAPTER 4 OF CLEAN WATER ENDS OF ADJACENT WATTLES SHALL BECC ESC DETAILS HAVE 4 BAGS AND THEY SHALL BE SERVICES ER❑SI❑N PREVENTI❑N OVERLAPPED 1 FT. MINIMUM TO PREVENT OVERLAPPED BY 6". AND SEDIMENT CONTROL SEDIMENT PASSING THROUGH THE FIELD JOINT. n PLANNING AND DESIGN MANUAL. �J Z INLET PROTECTION 0 TYPE 4 C1eanWate� Services WATTLES C1eanWate� Services I— DRAWING NO. 915 REVISED 12-16 DRAWING NO. 880 REVISED 12-16 J O w ESC2 .0 0 - __