5. Attachment D1 - 26108-HSD-Block 56-EC-Plans.pdf

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J O S H U A K E N N E T H G I L C H R I S T

J U L Y 1 1 , 2 0 2 3

090248PE

EXPIRES: 06/30/27

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DEMOLITION

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3J PROJECT #

DESIGNED BY

CHECKED BY

TAX LOT(S)

REVISIONS

PUBLISH DATE

ISSUED FOR

SHEET NUMBER

PROJECT INFORMATION

1N231CD9100,

1N231CD9300,

1N231CD9400,

1N231CD9500,

1N231CD10600

EXISTING CONDITIONS LEGEND

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

DEMOLITION KEY NOTES

EXISTING BUILDING, ASSOCIATED UTILITIES, FOUNDATION, AND

RAMPS TO BE DEMOLISHED AND DISPOSE OFFSITE.

EXISTING FOUNDATION AND ASSOCIATED UTILITIES TO BE

DEMOLISHED AND DISPOSE OFFSITE.

REMOVE EXISTING ASPHALT/ CONCRETE PAVEMENT /GRAVEL WITHIN

AREA INDICATED AND DISPOSE OFFSITE. SAWCUT ASPHALT/

CONCRETE PAVEMENT WITHIN AREA SHOWN OR TO NEAREST JOINT.

REMOVE EXISTING TREE AND DISPOSE OFFSITE.

REMOVE EXISTING UTILITY AND ASSOCIATED APPURTENANCES

WITHIN LIMITS SHOWN. ALL DISCONNECTS TO BE COORDINATED

WITH THE APPROPRIATE UTILITY PROVIDER AND ANY CUSTOMERS

ONE WEEK IN ADVANCE OF DISCONNECT.

ABANDON UTILITY IN-PLACE WITH CUT AT PROPERTY LINE WITH CUT

AND CAP AT PROPERTY LINE.

REMOVE EXISTING FENCE, GATES, AND ASSOCIATED FOOTINGS.

DISPOSE OF MATERIAL OFFSITE.

REMOVE EXISTING WALL AND ASSOCIATED FOOTINGS AND DISPOSE

OFFSITE.

CONTRACTOR TO COORDINATE REMOVAL OF EXISTING OVERHEAD

UTILITY LINE WITH NEIGHBORING PROPERTY PRIOR TO SERVICE

DISCONNECTION.

Knowwhat's below.

Callbefore you dig.

ATTENTION EXCAVATORS:

OREGON LAW REQUIRES YOU TO FOLLOW RULES ADOPTED BY THE

OREGON UTILITY NOTIFICATION CENTER. THOSE RULES ARE SET FORTH

IN OAR 952-001-0010 THROUGH OAR 952-001-0090. YOU MAY OBTAIN

COPIES OF THESE RULES FROM THE CENTER BY CALLING 503-232-1987.

IF YOU HAVE ANY QUESTIONS ABOUT THE RULES, YOU MAY CONTACT

THE CENTER. YOU MUST NOTIFY THE CENTER AT LEAST TWO BUSINESS

DAYS, BEFORE COMMENCING AN EXCAVATION. CALL 503-246-6699.

ZONE X

(UN-SHADED)

THE SITE IS LOCATED WITHIN ZONE X (UN-SHADED) PER FLOOD INSURANCE RATE

MAP (FIRM) COMMUNITY-PANEL NUMBER

FEMA'S DEFINITION OF ZONE X (UN-SHADED) IS AN AREA OF MINIMAL FLOOD

HAZARD, USUALLY DEPICTED ON FIRMS AS ABOVE THE 500-YEAR FLOOD LEVEL.

ZONE X IS THE AREA DETERMINED TO BE OUTSIDE THE 500-YEAR FLOOD AND

PROTECTED BY LEVEE FROM 100-YEAR FLOOD. IN COMMUNITIES THAT

PARTICIPATE IN THE NFIP, FLOOD INSURANCE IS AVAILABLE TO ALL PROPERTY

41067C0338E

FEMA FLOOD ZONE INFORMATION

EXISTING BUILDING

PROJECT BOUNDARY

RIGHT-OF-WAY CENTERLINE

EXISTING CONCRETE

EXISTING CURB

EASEMENT LINE

EXISTING FENCE LINE

EXISTING GAS LINE

EXISTING GRAVEL

EXISTING LOT LINE

EXISTING TELECOM. LINE

EXISTING ADJACENT PROPERTY LINE

EXISTING UNDERGROUND POWER

EXISTING UNSPECIFIED OVERHEAD WIRE

EXISTING SANITARY SEWER

EXISTING STORM DRAIN

EXISTING CABLE LINE

RIGHT-OF-WAY LINE

EXISTING WATER MAIN

EXISTING WATER VALVE/ METER/ HYDRANT)

EXISTING DOWNSPOUT/ STORM MANHOLE/ CATCHBASIN

EXISTING SANITARY SEWER CLEANOUT/ MANHOLE

EXISTING NATURAL GAS METER/ VALVE

EXISTING TELECOMM. STRUCTURES/ VAULTS

EXISTING ELECTRICAL POLES/ VAULTS/ STRUCTURES

EXISTING SIGN

EXISTING TREE (CONIFEROUS/ DECIDUOUS)

DEMOLITION LEGEND

REMOVE EXISTING UTILITY LINE TO EXTENTS SHOWN

ABANDON EXISTING UTILITY LINE TO EXTENTS SHOWN

REMOVE EXISTING PAVEMENT/GRAVEL SURFACE

PROPOSED SAWCUT LIMITS

REMOVE EXISTING TREE AS NOTED

EXISTING TREE TABLE

TREE NUMBER TYPE DIAMETER BREAST HEIGHT (DBH) (IN.)

10019 DECIDUOUS 15

10020 DECIDUOUS 8

10021 DECIDUOUS 13

10073 DECIDUOUS 9

10202 DECIDUOUS 33

10305 DECIDUOUS 16

10361 DECIDUOUS 18, 20

10363 DECIDUOUS 7, 7, 10, 10, 10

10614 DECIDUOUS 14

10809 DECIDUOUS 11, 11, 12, 14

10943 DECIDUOUS 6

10944 CONIFEROUS 6, 7

10953 DECIDUOUS 9

11071 DECIDUOUS 18

11232 CONIFEROUS 19

11281 CONIFEROUS 20

11349 DECIDUOUS 13

11413 DECIDUOUS 10

11529 DECIDUOUS 14

11630 CONIFEROUS 38

11713 CONIFEROUS 10

12463 DECIDUOUS 16

13722 CONIFEROUS 6

13738 CONIFEROUS 6

SURVEYOR NOTES:

1. UTILITIES SHOWN ARE BASED ON:

- PUBLIC UNDERGROUND UTILITY LOCATE MARKING AS PROVIDED BY OTHERS, PROVIDED PER UTILITY LOCATE TICKET NUMBERS 26072699, 26072721, 26072729, 26072921, 26072941, 26072964.

- PRIVATE UNDERGROUND UTILITY LOCATE MARKINGS AS PROVIDED BY RECON LOCATES.

- THE SURVEYOR MAKES NO GUARANTEE THAT THE UNDERGROUND LOCATES REPRESENT THE ONLY UTILITIES IN THE AREA. CONTRACTORS ARE RESPONSIBLE FOR VERIFYING ALL EXISTING CONDITIONS

PRIOR TO BEGINNING CONSTRUCTION.

- UNDERGROUND UTILITIES SHOWN ON TAX LOTS 9100, 9300, AND 9400 WERE LOCATED BEFORE DEMOLITION ACTIVITIES. CONNECTING STRUCTURES ON LOTS HAVE BEEN REMOVED. UNVERIFIED IF

UNDERGROUND LINES STILL EXIST IN DEMOLITION ZONE.

2. FIELD WORK WAS CONDUCTED MARCH 3-7, 2026 AND MARCH 17-18, 2026.

3. HORIZONTAL DATUM: COORDINATES ARE BASED ON OREGON COORDINATE REFERENCE SYSTEM -

PORTLAND ZONE (OCRS).

4. VERTICAL DATUM: ELEVATIONS ARE BASED ON CITY OF HILLSBORO BENCHMARK NO. "X 253 RESET".

ELEVATION = 191.31 FEET (CITY OF HILLSBORO DATUM).

5. CONTOUR INTERVAL IS 1.00 FOOT.

6. THIS IS NOT A PROPERTY BOUNDARY SURVEY TO BE RECORDED WITH THE COUNTY SURVEYOR.

BOUNDARIES MAY BE PRELIMINARY AND SHOULD BE CONFIRMED WITH THE STAMPING SURVEYOR

PRIOR TO RELYING ON FOR DETAILED DESIGN OR CONSTRUCTION.

7. BUILDING FOOTPRINTS ARE MEASURED TO SIDING UNLESS NOTED OTHERWISE. CONTACT SURVEYOR

WITH QUESTIONS REGARDING BUILDING TIES.

8. DENOTED STRUCTURES INVERT ELEVATION ARE PER CITY OF HILLSBORO UTILITY GIS MAPS.

9. TREES WITH DIAMETER OF 6" AND GREATER ARE SHOWN. TREE DIAMETERS WERE MEASURED

UTILIZING A DIAMETER TAPE AT BREAST HEIGHT. TREE INFORMATION IS SUBJECT TO ARBORIST

INSPECTION.

10. EASEMENTS SHOWN ARE BASED ON A TITLE REPORT FROM WFG NATIONAL TITLE INSURANCE COMPANY, ORDER NO. 25-116948 AND 25-116951, WITH AN EFFECTIVE DATE OF FEBRUARY 27, 2025

AND FEBRUARY 13, 2025.

11. GROSS SITE AREA: 1.80 ACRES ±.

DIGITALLY SIGNED 2026.08.11

SE WASHINGTON ST.

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Knowwhat's below.

Callbefore you dig.

J O S H U A K E N N E T H G I L C H R I S T

J U L Y 1 1 , 2 0 2 3

090248PE

EXPIRES: 06/30/27

OREGON

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3J PROJECT #

DESIGNED BY

CHECKED BY

TAX LOT(S)

REVISIONS

PUBLISH DATE

ISSUED FOR

SHEET NUMBER

PROJECT INFORMATION

1N231CD9100,

1N231CD9300,

1N231CD9400,

1N231CD9500,

1N231CD10600

1200-CA

EROSION & SEDIMENT CONTROL PLANS

FOR

HILLSBORO SCHOOL DISTRICT - BLOCK 56 DEMOLITION

PREPARED FOR

HILLSBORO SCHOOL DISTRICT

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PROJECT LOCATION

STANDARD EROSION CONTROL NOTES

1. COMPLY WITH ALL APPLICABLE PROVISIONS IN CHAPTER 6 OF THE MOST CURRENT CLEAN WATER

SERVICES DESIGN AND CONSTRUCTION STANDARDS: R&O 19-5 AS AMENDED BY R&O 19-22.

2. VISUAL MONITORING INSPECTION REPORTS MUST BE MADE IN ACCORDANCE WITH DEQ 1200-CA

PERMIT REQUIREMENTS (SCHEDULE B, SECTION 17.5).

3. INSPECTION LOGS MUST BE KEPT IN ACCORDANCE WITH DEQ 1200-CA PERMIT REQUIREMENTS.

(SCHEDULE B, SECTION 17).

4. RETAIN A COPY OF THE ESCP AND ALL REVISIONS ON SITE AND MAKE IT AVAILABLE ON REQUEST TO

DEQ, AGENT, OR THE LOCAL MUNICIPALITY (SCHEDULE A, SECTION 15.7).

5. THE PERMIT REGISTRANT MUST IMPLEMENT THE ESCP. FAILURE TO IMPLEMENT ANY OF THE

CONTROL MEASURES OR PRACTICES DESCRIBED IN THE ESCP IS A VIOLATION OF THE PERMIT

(SCHEDULE A, SECTION 15.11).

6. THE ESCP MUST BE ACCURATE AND REFLECT SITE CONDITIONS (SCHEDULE A, SECTION 15).

7. IDENTIFY, MARK, AND PROTECT (BY CONSTRUCTION FENCING OR OTHER MEANS) CRITICAL RIPARIAN

AREAS AND VEGETATION INCLUDING IMPORTANT TREES AND ASSOCIATED ROOTING ZONES, AND

VEGETATION AREAS TO BE PRESERVED. IDENTIFY VEGETATIVE BUFFER ZONES BETWEEN THE SITE AND SENSITIVE AREAS (E.G., WETLANDS), AND OTHER AREAS TO BE PRESERVED, ESPECIALLY IN

PERIMETER AREAS (SCHEDULE A, SECTION 15.4).

8. MAINTAIN AND DELINEATE ANY EXISTING NATURAL BUFFER WITHIN THE 50-FEET OF WATERS OF THE

STATE (SCHEDULE A, SECTION 15.4)

9. CONTROL PROHIBITED DISCHARGES FROM LEAVING THE CONSTRUCTION SITE, I.E., CONCRETE

WASH-OUT, WASTEWATER FROM CLEANOUT OF STUCCO, PAINT AND CURING COMPOUNDS

(SCHEDULE A, SECTION 12).

10. PROVIDE PLANS FOR SEDIMENTATION BASINS THAT HAVE BEEN DESIGNED PER SCHEDULE A, SECTION 13.2.17 AND STAMPED BY AN OREGON PROFESSIONAL ENGINEER.

11. IF ENGINEERED SOILS ARE USED ON SITE, A SEDIMENTATION BASIN/IMPOUNDMENT MUST BE

INSTALLED PER SCHEDULE A, SECTION 13.2.18.

12. THE OPERATOR MUST COMPLY WITH THE REQUIREMENTS IN SCHEDULE A, SECTION 13.3 TO

PREVENT THE DISCHARGE OF POLLUTANTS IN GROUNDWATER OR ACCUMULATED STORMWATER

THAT IS REMOVED FROM EXCAVATIONS, TRENCHES, FOUNDATIONS, VAULTS, OR OTHER SIMILAR

POINTS OF ACCUMULATION.

13. IF AN ACTIVE TREATMENT SYSTEM (FOR EXAMPLE, ELECTRO-COAGULATION, FLOCCULATION, FILTRATION, ETC.) FOR SEDIMENT OR OTHER POLLUTANT REMOVAL IS EMPLOYED, SUBMIT AN

OPERATION AND MAINTENANCE PLAN (INCLUDING SYSTEM SCHEMATIC, LOCATION OF SYSTEM,

LOCATION OF INLET, LOCATION OF DISCHARGE, DISCHARGE DISPERSION DEVICE DESIGN, AND A

SAMPLING PLAN AND FREQUENCY) BEFORE OPERATING THE TREATMENT SYSTEM. OBTAIN

ENVIRONMENTAL MANAGEMENT PLAN APPROVAL FROM DEQ BEFORE OPERATING THE TREATMENT

SYSTEM. OPERATE AND MAINTAIN THE TREATMENT SYSTEM ACCORDING TO MANUFACTURER'S

SPECIFICATIONS (SCHEDULE A, SECTION 6).

14. WITHIN 24 HOURS, SIGNIFICANT SEDIMENT THAT HAS LEFT THE CONSTRUCTION SITE, MUST BE

REMEDIATED. INVESTIGATE THE CAUSE OF THE SEDIMENT RELEASE AND IMPLEMENT STEPS TO

PREVENT A RECURRENCE OF THE DISCHARGE WITHIN THE SAME 24 HOURS. ANY IN-STREAM

CLEAN-UP OF SEDIMENT SHALL BE PERFORMED ACCORDING TO THE OREGON DEPARTMENT OF

STATE LANDS REQUIRED TIMEFRAME (SCHEDULE A, SECTION 13)

15. DOCUMENT ANY PORTION(S) OF THE SITE WHERE LAND DISTURBING ACTIVITIES HAVE

PERMANENTLY CEASED OR WILL BE TEMPORARILY INACTIVE FOR 14 OR MORE CALENDAR DAYS

(SCHEDULE A, SECTION 13.2.20).

16. PROVIDE TEMPORARY STABILIZATION FOR THAT PORTION OF THE SITE WHERE CONSTRUCTION ACTIVITIES CEASE FOR 14 DAYS OR MORE WITH A COVERING OF BLOWN STRAW AND A TACKIFIER, LOOSE STRAW, OR AN ADEQUATE COVERING OF COMPOST MULCH UNTIL WORK RESUMES ON THAT

PORTION OF THE SITE (SCHEDULE A, SECTION 13.2.20).

BMP MATRIX FOR CONSTRUCTION PHASE

YEAR 2026

PHASE /BMP DEMOLITION/

CLEARING

MASS

GRADING - N/A

UTILITIES AND

HARDSCAPE - N/A

FINAL

STABILIZATION

EROSION PREVENTION

PRESERVE NATURAL

VEGETATION X X

GROUND COVER X

TEMPORARY

STABILIZATION

(STRAW MULCH)

X X

PERMANENT

STABILIZATION &

SEEDING

X

SEDIMENT CONTROL

SEDIMENT FENCE

(INTERIOR) X

STRAW WATTLES X

INLET PROTECTION X

RUN OFF CONTROL

CONSTRUCTION

ENTRANCE X

EXISTING OUTLET

PROTECTION X X

POLLUTION PREVENTION

HAZARDOUS WASTE

MANAGEMENT X

SPILL KIT ONSITE X

REQUIRED INSPECTION FREQUENCY

SITE CONDITION MINIMUM FREQUENCY

1. ACTIVE PERIOD ON INITIAL DATE THAT LAND DISTURBANCE

ACTIVITIES COMMENCE.

WITHIN 24 HOURS OF ANY STORM EVENT, INCLUDING

RUNOFF FROM SNOW MELT, THAT RESULTS IN

DISCHARGE FROM THE SITE.

AT LEAST ONCE EVERY 14 DAYS, REGARDLESS OF

WHETHER STORM RUNOFF IS OCCURRING.

2. INACTIVE PERIODS GREATER THAN

FOURTEEN (14) CONSECUTIVE

CALENDAR DAYS.

THE INSPECTOR MAY REDUCE THE FREQUENCY OF

INSPECTIONS IN ANY AREA OF THE SITE WHERE THE

STABILIZATION STEPS IN SECTION 2.2.20 HAVE BEEN

COMPLETED TO TWICE PER MONTH FOR THE FIRST

MONTH, NO LESS THAN 14 CALENDAR DAYS APART,

THEN ONCE PER MONTH.

3. PERIODS DURING WHICH THE SITE IS

INACCESSIBLE DUE TO INCLEMENT

WEATHER.

IF SAFE, ACCESSIBLE AND PRACTICAL, INSPECTIONS

MUST OCCUR DAILY AT A RELEVANT DISCHARGE

POINT OR DOWNSTREAM LOCATION OF THE

RECEIVING WATER BODY.

4. PERIODS DURING WHICH

CONSTRUCTION ACTIVITIES ARE

SUSPENDED AND RUNOFF IS

UNLIKELY DUE TO FROZEN

CONDITIONS.

VISUAL MONITORING INSPECTION MAY BE

TEMPORARILY SUSPENDED. IMMEDIATELY RESUME

MONITORING UPON THAWING, OR WHEN WEATHER

CONDITIONS MAKE DISCHARGES LIKELY.

5. PERIODS DURING WHICH

CONSTRUCTION ACTIVITIES ARE

CONDUCTED AND RUNOFF IS

UNLIKELY DURING FROZEN

CONDITIONS.

VISUAL MONITORING INSPECTIONS MAY BE REDUCED

TO ONCE A MONTH. IMMEDIATELY RESUME

MONITORING UPON THAWING, OR WHEN WEATHER

CONDITIONS MAKE DISCHARGES UNLIKELY.

A COMPREHENSIVE LIST OF AVAILABLE BEST MANAGEMENT PRACTICES (BMP) OPTIONS

BASED ON DEQ's GUIDANCE MANUAL HAS BEEN REVIEWED TO COMPLETE THIS EROSION AND SEDIMENT CONTROL PLAN. SOME OF THE ABOVE LISTED BMP's WERE NOT CHOSEN

BECAUSE THEY WERE DETERMINED TO NOT EFFECTIVELY MANAGE EROSION

PREVENTION AND SEDIMENT CONTROL FOR THIS PROJECT BASED ON SPECIFIC SITE

CONDITIONS, INCLUDING SOIL CONDITIONS TOPOGRAPHIC CONSTRAINTS, ACCESSIBILITY

TO THE SITE, AND OTHER RELATED CONDITIONS, AS THE PROJECT PROGRESSES AND

THERE IS A NEED TO REVISE THE ESC PLAN, AN ACTION PLAN WILL BE SUBMITTED.

INITIAL JKG

RATIONALE STATEMENT

BUSINESS HOURS

MONDAY 7AM - 8PM

TUESDAY 7AM - 8PM

WEDNESDAY 7AM - 8PM

THURSDAY 7AM - 8PM

FRIDAY 7AM - 8PM

SATURDAY 7AM - 8PM

SUNDAY -NO WORK-

SITE INSPECTOR AND VISUAL MONITORING

COMPANY/AGENCY: 3J CONSULTING

CONTACT: DARRELL WYANT

PHONE: (971) 253-4194

EMAIL: darrell.wyant@3j-consulting.com

CERTIFICATION TYPE: CESCL

CERTIFICATION NUMBER: ECO-3-1172201

DESCRIPTION OF EXPERIENCE:

A LICENSED AND EXPERIENCED

EROSION AND SEDIMENT CONTROL

LEAD AND INSPECTOR. HAS BEEN

OVERSEEING EROSION CONTROL

INSTALLATION, MAINTENANCE, AND

ACTION PLAN ADJUSTMENTS FOR

APPROXIMATELY 7+ YEARS FOR

SEVERAL COMPANIES ON SEVERAL

PROJECTS ALL AROUND THE

PORTLAND METRO AREA.

SITE INFORMATION

1. TYPE OF CONSTRUCTION: PREPARATION OF SITE FOR NEW

DEVELOPMENT, BY DEMOLISHING THE EXISTING

STRUCTURES AND FOUNDATIONS ON SITE.

2. CONSTRUCTION ACTIVITY WILL CONSIST OF:

A. EXISTING STRUCTURE DEMOLITION

B. EXISTING FOUNDATION REMOVAL

C. EXISTING PRIVATE UTILITY REMOVAL

3. PROJECT TIMELINE:

- BEGINNING DATE: JULY 2026

- END DATE: SEPTEMBER 2026

4. PROJECT SITE AREAS:

- TOTAL PERMIT COVERAGE AREA: 1.80 ACRES

- DISTURBED AREA: 1.23 ACRES

- PERCENT OF SITE DISTURBED: 68.3%

- TOTAL PUBLIC COVERAGE AREA: 0.00 ACRES

6. ONSITE SOIL TYPES:

A. ALOHA SILT LOAM (HYDROLOGIC SOIL GROUP C/D)

7. CUT AND FILL DATA:

- NO MASS GRADING EXPECTED

8. RECEIVING WATER BODIES / STORM SYSTEM:

EXISTING STORM PIPE CONVEYANCE SYSTEM IN SE

WASHINGTON STREET THAT EVENTUALLY

DISCHARGES INTO ROCK CREEK.

9. WATER BODIES WITHIN 1 MILE OF COVERAGE AREA

- ROCK CREEK

- JACKSON BOTTOM WETLANDS

10. RAIN GAUGE LOCATION

- PORTLAND-HILLSBORO AIRPORT (KHIO)

- https://forecast.weather.gov/MapClick.php?lat=45.496974&l on=-122.9500072

ATTENTION EXCAVATORS:

OREGON LAW REQUIRES YOU TO FOLLOW RULES ADOPTED BY THE

OREGON UTILITY NOTIFICATION CENTER. THOSE RULES ARE SET FORTH

IN OAR 952-001-0010 THROUGH OAR 952-001-0090. YOU MAY OBTAIN

COPIES OF THESE RULES FROM THE CENTER BY CALLING 503-232-1987.

IF YOU HAVE ANY QUESTIONS ABOUT THE RULES, YOU MAY CONTACT

THE CENTER. YOU MUST NOTIFY THE CENTER AT LEAST TWO BUSINESS

DAYS, BEFORE COMMENCING AN EXCAVATION. CALL 503-246-6699.

PROPERTY DESCRIPTION:

TAX LOTS 9100, 9300, 9400, 9500, 9600, AND 10600

LOCATED IN THE SOUTHEAST 1/4 OF THE SOUTHWEST 1/4

OF SECTION 31, TOWNSHIP 1 NORTH, RANGE 2 WEST,

WILLAMETTE MERIDIAN, CITY OF HILLSBORO

WASHINGTON COUNTY, OREGON

PROJECT LOCATION:

215 SE 6TH AVE., 233 SE 6TH AVE., 527 SE

BASELINE ST., 222 SE 5TH AVE., 526 SE

WASHINGTON ST., & 534 SE WASHINGTON ST.

HILLSBORO, OREGON 97123

LATITUDE = N 45°31'15.0"

LONGITUDE = W 122°58'54.0"

PROJECT TEAM

HILLSBORO SCHOOL DISTRICT

4901 SE WITCH HAZEL ROAD

HILLSBORO, OR 97123

CONTACT: DAVE PETERSON

PHONE: (503) 844-1332

EMAIL: petersod@hsd.k12.or.us

3J CONSULTING, INC.

9600 SW NIMBUS AVE., SUITE 100

BEAVERTON, OR 97008

CONTACT: JOSH GILCHRIST, PE

PHONE: (253) 470-4675

EMAIL: josh.gilchrist@3j-consulting.com

OWNER / APPLICANT CIVIL ENGINEER

AKS ENGINEERING & FORESTRY, LLC.

12965 SW HERMAN RD, STE. 100

TUALATIN, OR 97062

CONTACT: MICHAEL BUTZ, PLS

PHONE: (503) 563-6151

LAND SURVEYOR

NIDUS CONSULTING

CONTACT: RYAN GILPIN

PHONE: (925) 980-1256

EMAIL: ryan@nidusconsulting.com

ARBORIST

APEX COMPANIES, LLC.

4412 S CORBETT AVE.

PORTLAND, OR 97239

CONTACT: TOM ARCHER

PHONE: (503) 417-7728

EMAIL: tom.archer@apexcos.com

ENVIRONMENTAL CONSULTANT

EROSION AND SEDIMENT CONTROL PLANS SHEET INDEX

SHEET # SHEET TITLE

C140 EROSION & SEDIMENT CONTROL PLAN COVER SHEET

C141 ESCP - DEMOLITION PLAN

C142 ESCP - FINAL STABILIZATION

C143 ESCP - DETAILS

CLEAN WATER SERVICES (CWS)

STANDARD DRAWING NOS.

855 CONSTRUCTION ENTRANCE

875 SEDIMENT FENCE

880 WATTLES

905 CURB AND GUTTER INLET PROTECTION

915 TYPE IV INLET PROTECTION

920 TYPE V INLET PROTECTION

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J O S H U A K E N N E T H G I L C H R I S T

J U L Y 1 1 , 2 0 2 3

090248PE

EXPIRES: 06/30/27

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3J PROJECT #

DESIGNED BY

CHECKED BY

TAX LOT(S)

REVISIONS

PUBLISH DATE

ISSUED FOR

SHEET NUMBER

PROJECT INFORMATION

1N231CD9100,

1N231CD9300,

1N231CD9400,

1N231CD9500,

1N231CD10600

EROSION & SEDIMENT CONTROL LEGEND

PROPOSED SILT FENCING

PROPOSED CONSTRUCTION ENTRANCE

PROPOSED TREE PROTECTION FENCING

PROPOSED STAGING/LAYDOWN AREA

PROPOSED STRAW WATTLE

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

EXISTING SURFACE RUN-OFF FLOW ARROW

PROPOSED INLET PROTECTION

EROSION & SEDIMENT CONTROL KEY NOTES

CONSTRUCT STABILIZED GRAVEL CONSTRUCTION ENTRANCE AT

LOCATION SHOWN, PER CLEAN WATER SERVICES DRAWING NO. 855,

ON SHEET C143.

INSTALL STRAW WATTLES, WEIGHTED DOWN WITH SANDBAGS AT 36"

SPACING, AT LOCATION SHOWN, PER CLEAN WATER SERVICES

DRAWING NO. 880, ON SHEET C143. MAINTAIN THROUGHOUT

CONSTRUCTION.

INSTALL INLET PROTECTION, AT LOCATION SHOWN, WITH

APPROPRIATE INLET PROTECTION TYPE PER CLEAN WATER

SERVICES DRAWING NOS. 905, 915, AND 920, ON SHEET C143.

MAINTAIN THROUGHOUT CONSTRUCTION.

INSTALL TREE PROTECTION FENCING AT LOCATION SHOWN, PER

DETAIL 1 ON SHEET C143. MAINTAIN THROUGHOUT CONSTRUCTION.

PROVIDE CONSTRUCTION STAGING/ LAYDOWN AREA FOR MATERIALS

AND STOCKPILE AT LOCATION SHOWN. ALL MATERIALS AND

STOCKPILE SHALL BE REMOVED COMPLETELY AT END OF PROJECT.

INLET PROTECTION TO BE ADDED TO STORM INLET ON SE 6TH AVE,

SOUTH OF SE GUMLEAF LANE

Knowwhat's below.

Callbefore you dig.

ATTENTION EXCAVATORS:

OREGON LAW REQUIRES YOU TO FOLLOW RULES ADOPTED BY THE

OREGON UTILITY NOTIFICATION CENTER. THOSE RULES ARE SET FORTH

IN OAR 952-001-0010 THROUGH OAR 952-001-0090. YOU MAY OBTAIN

COPIES OF THESE RULES FROM THE CENTER BY CALLING 503-232-1987.

IF YOU HAVE ANY QUESTIONS ABOUT THE RULES, YOU MAY CONTACT

THE CENTER. YOU MUST NOTIFY THE CENTER AT LEAST TWO BUSINESS

DAYS, BEFORE COMMENCING AN EXCAVATION. CALL 503-246-6699.

ZONE X

(UN-SHADED)

THE SITE IS LOCATED WITHIN ZONE X (UN-SHADED) PER FLOOD INSURANCE RATE

MAP (FIRM) COMMUNITY-PANEL NUMBER

FEMA'S DEFINITION OF ZONE X (UN-SHADED) IS AN AREA OF MINIMAL FLOOD

HAZARD, USUALLY DEPICTED ON FIRMS AS ABOVE THE 500-YEAR FLOOD LEVEL.

ZONE X IS THE AREA DETERMINED TO BE OUTSIDE THE 500-YEAR FLOOD AND

PROTECTED BY LEVEE FROM 100-YEAR FLOOD. IN COMMUNITIES THAT

PARTICIPATE IN THE NFIP, FLOOD INSURANCE IS AVAILABLE TO ALL PROPERTY

41067C0338E

FEMA FLOOD ZONE INFORMATION

EROSION CONTROL GENERAL NOTES

1. SEED USED FOR TEMPORARY OR PERMANENT SEEDING SHALL BE COMPOSED OF

ONE OF THE FOLLOWING MIXTURES, UNLESS OTHERWISE AUTHORIZED:

A. VEGETATED CORRIDOR AREAS REQUIRE NATIVE SEED MIXES. SEE

RESTORATION PLAN FOR APPROPRIATE SEED MIX.

B. DWARF GRASS MIX (MIN. 100 LB./AC.)

1. DWARF PERENNIAL RYEGRASS (80% BY WEIGHT)

2. CREEPING RED FESCUE (20% BY WEIGHT)

C. STANDARD HEIGHT GRASS MIX (MIN. 100LB./AC.)

1. ANNUAL RYEGRASS (40% BY WEIGHT)

2. TURF-TYPE FESCUE (60% BY WEIGHT)

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 ROUGHENING IMPROVES SEED BEDDING AND

REDUCES RUN-OFF VELOCITY.

3. LONG TERM SLOPE STABILIZATION MEASURES SHALL INCLUDE THE

ESTABLISHMENT OF PERMANENT VEGETATIVE COVER VIA SEEDING WITH

APPROVED MIX AND APPLICATION RATE.

4. TEMPORARY SLOPE STABILIZATION MEASURES SHALL INCLUDE: COVERING

EXPOSED SOIL WITH PLASTIC SHEETING, STRAW MULCHING, WOOD CHIPS, OR

OTHER APPROVED MEASURES.

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 AND MULCHING, EROSION CONTROL BLANKETS OR MATS,

MID-SLOPE SEDIMENT FENCES OR WATTLES, OR OTHER APPROPRIATE MEASURES.

SLOPES MAY REQUIRE ADDITIONAL EROSION 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, STREET SWEEPING, AND

VACUUMING, MAY 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.

20.0'

50.0'

TREE MARKED FOR REMOVAL (CALIPER LESS THAN 8")

TREE INVENTORY

SURVEY

NO.

ARBORIST

NO. COMMON NAME DBH DISPOSITION

10809 11 JAPANESE FLOWERING CHERRY 14,12,11,10 PROTECT

10953 12 LITTLE LEAF LINDEN 9 PROTECT

11071 13 LITTLE LEAF LINDEN 16 PROTECT

11232 14 WESTERN RED CEDAR 19 PROTECT

11349 15 LITTLE LEAFED LINDEN 13 PROTECT

11413 16 LITTLE LEAF LINDEN 9 PROTECT

11529 17 ZELKOVA 13 PROTECT

11630 22 WESTERN RED CEDAR 39 PROTECT

10614 24 LITTLE LEAF LINDEN 12 PROTECT

10305 25 SUGAR MAPLE 16 PROTECT

10363 26 JAPANESE FLOWERING CHERRY 10,10,9,6,6,4 PROTECT

10361 27 JAPANESE FLOWERING CHERRY 20,15 PROTECT

10202 28 TREE OF HEAVEN 30 REMOVE

10021 29 CHERRY PLUM 12 PROTECT

10020 30 CHERRY PLUM 8 PROTECT

10019 31 CHERRY PLUM 14 PROTECT

10073 32 TREE OF HEAVEN 8,5,4,3 REMOVE

11281 33 WHITE FIR 20 PROTECT

- 34 PORTUGUESE LAUREL 20,13 PROTECT

- 36 SALT CEDAR 6,4 REMOVE

- 37 SOUTHERN MAGNOLIA 18,12 PROTECT

12463 38 RED MAPLE 14 PROTECT

- 39 RED FLOWERING DOGWOOD 10 PROTECT

TREE PRESERVATION NOTES

1. AS PLANS CHANGE OR WHEN FINAL PLANS ARE APPROVED, FORWARD TO THE PROJECT

ARBORIST FOR REVIEW.

2. PLAN FOR NO DEMOLITION WITHIN ANY TREE PROTECTION FENCING AND DO NOT MOVE

FENCING THROUGHOUT THE DEMOLITION PROCESS. IF FENCING NEEDS TO BE MOVED,

CONTACT THE PROJECT ARBORIST.

PRE-DEMOLITION PHASE

3. CONTRACTOR TO SCHEDULE A MEETING WITH THE PROJECT ARBORIST AND SITE

DEMOLITION CONTRACTORS WORKING ON SITE TO DISCUSS DEMOLITION ACTIVITIES,

TREE PROTECTION MEASURES, AND MONITORING SCHEDULE.

4. INSTALL PERIMETER FENCING AND INSPECT THE EXISTING FENCING AROUND TREES

#11, 22, 29-31. FENCING SHOULD MATCH THE TREE PROTECTION PLAN.

5. INSTALL CHAIN LINK TREE PROTECTION FENCING AT LEAST 4 FEET TALL WITH

6-FOOT-TALL METAL POSTS TO PROTECT THE TREE PROTECTION ZONE AS SHOWN ON

THE TREE PROTECTION PLAN.

6. INSTALL 4-FOOT ORANGE SNOW FENCING ALONG THE EDGE OF THE PLANTING STRIP

AROUND TREES #26 & 27 AS SHOWN ON THE TREE PROTECTION PLAN.

DEMOLITION PHASE

7. REMOVE TREES #28, 32, AND 36.

8. THE PROJECT ARBORIST SHALL BE CONTACTED PRIOR TO ANY DEMOLITION WITHIN 15

FEET OF ALL TREES BEING PRESERVED. THE PROJECT ARBORIST SHALL OBSERVE ALL

DEMOLITION THAT THEY DETERMINE TO BE IMPORTANT TO TREE PRESERVATION.

9. IMMEDIATELY AFTER DEMOLITION OF THE BUILDING AT 527 SE BASELINE ST, INSTALL

NEW CHAIN LINK TREE PROTECTION FENCING AT LEAST 4 FEET TALL WITH 6-FOOT-TALL

METAL POSTS TO PROTECT THE TREES #14, 33, 34, AND 39 AT A LOCATION DETERMINED

BY THE PROJECT ARBORIST IN THE FIELD.

10. ALL ROOTS SHALL BE CUT CLEANLY WITH A SHARP SAW. STOP CONSTRUCTION

ACTIVITIES IN THE AREA AND CONTACT THE PROJECT ARBORIST ANYTIME A ROOT

LARGER THAN 2" IN DIAMETER IS ENCOUNTERED.

11. CONTACT THE PROJECT ARBORIST IF ANY TREE IS DAMAGED, AND IF ANY TREE

PROTECTION FENCE NEEDS TO BE MOVED. THE FOLLOWING ACTIVITIES ARE

PROHIBITED WITHIN THE TREE PROTECTION FENCING

A. GROUND DISTURBANCE OR CONSTRUCTION ACTIVITY, INCLUDING VEHICLE OR

EQUIPMENT ACCESS

B. STORAGE OF EQUIPMENT OR MATERIALS, INCLUDING SOIL, TEMPORARY OR

PERMANENT STOCKPILING

C. PROPOSED BUILDINGS, IMPERVIOUS SURFACES, AND UNDERGROUND UTILITIES

D. EXCAVATION OR FILL, TRENCHING, OR OTHER WORK ACTIVITIES

E. CLEANING OF CONSTRUCTION EQUIPMENT, DUMPING OF WASTEWATER,

CONCRETE, PAINT, ETC.

12. KEEP TREE PROTECTION FENCING IN GOOD CONDITION THROUGHOUT THE PROJECT. IF

ANY FENCING SLUMPS, TEARS, OR FALLS DOWN, CONSTRUCTION CREWS SHALL

IMMEDIATELY REPAIR THE TREE PROTECTION FENCING.

ARBORIST TREE NUMBER

PROPOSED TREE PROTECTION FENCING (AFTER DEMO)

TH

A

VE

SE

TH

A

VE

SE GUMLEAF LN.

C142

ES

CP

FI

N

AL

S

TA

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PROPOSED MAJOR CONTOUR

PROPOSED MINOR CONTOUR108

EXISTING MAJOR CONTOUR

EXISTING MINOR CONTOUR

FT

SCALE: 1" = 30'

30 60

N

EW

S

J O S H U A K E N N E T H G I L C H R I S T

J U L Y 1 1 , 2 0 2 3

090248PE

EXPIRES: 06/30/27

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DEMOLITION

26108

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3J PROJECT #

DESIGNED BY

CHECKED BY

TAX LOT(S)

REVISIONS

PUBLISH DATE

ISSUED FOR

SHEET NUMBER

PROJECT INFORMATION

1N231CD9100,

1N231CD9300,

1N231CD9400,

1N231CD9500,

1N231CD10600

EROSION & SEDIMENT CONTROL LEGEND

PROPOSED PERMANENT SEEDING AREA

EROSION & SEDIMENT CONTROL KEY NOTES

PERMANENTLY SEED OR PLANT ALL UNPAVED DISTURBED AREAS IN

ACCORDANCE WITH EROSION CONTROL GENERAL NOTES, THIS

SHEET. CONTRACTOR TO GRADE AND RESTORE SITE TO MATCH

SURROUNDING EXISTING CONDITIONS WHERE FOUNDATION

DEMOLITION OCCURS. REFER TO GEOTECHNICAL FOR LIMITS OF

REMOVAL ON-SITE.

Knowwhat's below.

Callbefore you dig.

ATTENTION EXCAVATORS:

OREGON LAW REQUIRES YOU TO FOLLOW RULES ADOPTED BY THE

OREGON UTILITY NOTIFICATION CENTER. THOSE RULES ARE SET FORTH

IN OAR 952-001-0010 THROUGH OAR 952-001-0090. YOU MAY OBTAIN

COPIES OF THESE RULES FROM THE CENTER BY CALLING 503-232-1987.

IF YOU HAVE ANY QUESTIONS ABOUT THE RULES, YOU MAY CONTACT

THE CENTER. YOU MUST NOTIFY THE CENTER AT LEAST TWO BUSINESS

DAYS, BEFORE COMMENCING AN EXCAVATION. CALL 503-246-6699.

EROSION CONTROL GENERAL NOTES

1. SEED USED FOR TEMPORARY OR PERMANENT SEEDING SHALL BE COMPOSED OF

ONE OF THE FOLLOWING MIXTURES, UNLESS OTHERWISE AUTHORIZED:

A. VEGETATED CORRIDOR AREAS REQUIRE NATIVE SEED MIXES. SEE

RESTORATION PLAN FOR APPROPRIATE SEED MIX.

B. DWARF GRASS MIX (MIN. 100 LB./AC.)

1. DWARF PERENNIAL RYEGRASS (80% BY WEIGHT)

2. CREEPING RED FESCUE (20% BY WEIGHT)

C. STANDARD HEIGHT GRASS MIX (MIN. 100LB./AC.)

1. ANNUAL RYEGRASS (40% BY WEIGHT)

2. TURF-TYPE FESCUE (60% BY WEIGHT)

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 ROUGHENING IMPROVES SEED BEDDING AND

REDUCES RUN-OFF VELOCITY.

3. LONG TERM SLOPE STABILIZATION MEASURES SHALL INCLUDE THE

ESTABLISHMENT OF PERMANENT VEGETATIVE COVER VIA SEEDING WITH

APPROVED MIX AND APPLICATION RATE.

4. TEMPORARY SLOPE STABILIZATION MEASURES SHALL INCLUDE: COVERING

EXPOSED SOIL WITH PLASTIC SHEETING, STRAW MULCHING, WOOD CHIPS, OR

OTHER APPROVED MEASURES.

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 AND MULCHING, EROSION CONTROL BLANKETS OR MATS,

MID-SLOPE SEDIMENT FENCES OR WATTLES, OR OTHER APPROPRIATE MEASURES.

SLOPES MAY REQUIRE ADDITIONAL EROSION 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, STREET SWEEPING, AND

VACUUMING, MAY 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.

GRADING GENERAL NOTES

1. CONTRACTOR TO FILL ALL VOIDS AND/OR EXCAVATION OF FOUNDATIONS

AND COMPACT TO 95% MAXIMUM DRY DENSITY. FINAL GRADES SHALL

SLOPE SURFACE TO AVOID ANY PONDING WATER WITHIN THE FILLED

AREAS.

C143

ES

CP

D

ET

AI

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J O S H U A K E N N E T H G I L C H R I S T

J U L Y 1 1 , 2 0 2 3

090248PE

EXPIRES: 06/30/27

OREGON

ENGINEER

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GIS

TERED PROFESSIONAL

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2026-07-21

DEMOLITION

26108

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.D W

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3J PROJECT #

DESIGNED BY

CHECKED BY

TAX LOT(S)

REVISIONS

PUBLISH DATE

ISSUED FOR

SHEET NUMBER

PROJECT INFORMATION

1N231CD9100,

1N231CD9300,

1N231CD9400,

1N231CD9500,

1N231CD10600

D R

IP

LI

N E

RADIUS

SEE NOTE 2

D R

IP

LI

N E

CHAIN LINK

FENCE

NOTES:

1. 6' CHAIN LINK ON 2" POST AT 10' SPACING, DRIVEN 2' INTO THE

GROUND.

2. RADIUS IS EITHER 1/2' PER CALIPER INCH OR 10' OUTSIDE OF

DRIP LINE - SEE PLANS.

3. TO BE USED FOR CONSTRUCTION OR AN EQUAL AS APPROVED

BY PROJECT ARBORIST FOR ALL RETAINED TREES ADJACENT TO

CONSTRUCTION ACTIVITIES.

4. REFERENCE LOCAL AGENCY HAVING JURISDICTION FOR

EROSION CONTROL STANDARDS.

DETAIL NUMBER TREE PROTECTION

NOT TO SCALE