Att D - PLANS AND DRAWINGS S-10900-00016730.pdf

CONTRACT DOCUMENTS

FOR

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE PROJECT

ATTACHMENT D – HANGAR AND WATERLINE PLANS AND

DRAWINGS

OWNER:

Oregon Department of Aviation

3040 25th St. SE Salem, OR 97302

ENGINEER:

Century West Engineering

5500 Meadows Rd., Suite 250

Lake Oswego, OR 97035

Phone: 503.419.2130

APRIL 2026

This Page Left Intentionally Blank

SITE MAP

N.T.S.

N

VICINITY MAP

N.T.S.

PROJECT

SITE

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT (4S9)

HANGAR AND WATERLINE PROJECT

APRIL 2026

A.I.P. NO. 3-41-0072-019-2025

PROJECT

AREA

N

G-01

COVER SHEET

S MULINO RD

TAXILAN

E

RUNW

AY 14-32

MULINO STATE AIRPORT (4S9)

ODAV STATE AIRPORT MANAGER - TONY BEACH

ODAV PLANNING & PROJECTS MANAGER - ALEX THOMAS

CENTURY WEST ENGINEERING

PROJECT MANAGER - RYAN HALVORSON, PE

SR PROJECT MANAGER - JAMES KIRBY, PE

CONTACTS

LANDING WAY

SCALES ACCORDINGLY.

THIS SHEET, ADJUST

IF NOT ONE INCH ON

0" 1"

ORIGINAL DRAWING.

BAR IS ONE INCH ON

VERIFY SCALES

APPRBYNO. DATE REVISIONS

SHEET NO.

DRAWING NO.

DATE:

APRIL 2026

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE

PROJECT NO: SCALE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

y:

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AS NOTED40097.134.02

CENTURY

WEST

E N G I N E E R I N G

PORTLAND OFFICE

5500 MEADOWS ROAD

SUITE #250

LAKE OSWEGO, OR 97035

503.419.2130 OFFICE

JAK

ALB

RHH

THIS PLAN SHEET IS INTENDED TO BE VIEWED

IN COLOR. THE FOLLOWING COLORS SHOULD

BE DISTINGUISHABLE WHEN PRINTED

CORRECTLY:

RED BLUE

A.I.P. NO. 3-41-0072-019-2025

78906PE

OREGON

EXPIRES: 6/30/27

SEPT 11 , 2012

RYAN HA JIME HA LVORSO

N

ENGINEER

RE

GIS

TERED PROFESSIONAL

DIGITALLY SIGNED

ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

BID SET

TAXIW

AY A

EXISTIN

G

H

AN

G

AR

S

S MULINO RD

H W

Y

S M

ACKSBURG RD

S

KL

IN

G

ER

R

D

SHEET INDEX

SHEET NO DWG NO SHEET DESCRIPTION

1 G-01 COVER SHEET

2 G-02 LEGEND AND GENERAL NOTES

3 G-03 SITE AND SURVEY CONTROL

4 G-04 CONSTRUCTION SITE AND SAFETY PHASING PLAN

5 G-05 SITE SAFETY & PHASING PLAN NOTES

6 EC-01 EROSION CONTROL

7 EC-02 EROSION CONTROL NOTES

8 EC-03 EROSION CONTROL SITE SPECIFIC NOTES

9 EC-04 EROSION CONTROL DETAILS

10 C-01 DEMOLITION PLAN

11 C-02 SITE PLAN

12 C-03 SITE LAYOUT PLAN

13 C-04 FIRE LAYOUT PLAN

14 C-05 PAVEMENT TYPICAL SECTIONS

15 C-06 PAVEMENT TYPICAL SECTIONS

16 C-07 OVERALL GRADING AND DRAINAGE PLAN

17 C-08 GRADING PLAN

18 C-09 STORMWATER DRAINAGE PLAN

19 C-10 STORMWATER FACILITY PLAN

20 C-11 STORMWATER FACILITY PROFILE

21 C-12 UTILITY PLAN

22 C-13 PAVEMENT MARKING PLAN

23 C-14 DETAILS

24 C-15 DETAILS

25 C-16 DETAILS

26 C-17 HANGAR LAYOUT PLAN

27 C-18 HANGAR ELEVATION PLAN

32 E-05

SYMBOL AND LEGEND SHEET

SITE AND BUILDING PLAN

SINGLE LINE DIAGRAM

SCHEDULES

DETAILS

E-01 E-02 E-03 E-04

LEGEND:

BOLLARD

CONCRETE WASHOUT

CONTOUR - MAJOR

CONTOUR - MINOR

CONSTRUCTION ENTRANCE

CONTRACTOR STAGING AREA

CONTRACTOR HAUL ROUTE

CONTROL POINT

CLEANOUT/BACKWATER FLOW VALVE

DOWNSPOUT

EDGE OF PAVEMENT

ELECTRICAL (BURIED)

ELECTRICAL (OVERHEAD)

FENCE - BARBED WIRE

FENCE - SEDIMENT

FIRE HYDRANT

FLOW DIRECTION

FOUNDATION DRAIN

GAS LINE

GRASS AREA

GRAVEL AREA

GRAVEL REMOVAL

HANGAR LIMITS

INLET PROTECTION, TYPE 4

INLET PROTECTION, TYPE 5

LOW LEVEL BARRICADES

OUTFALL/INLET RIPRAP

PAVEMENT REMOVAL

PAVEMENT REPAVING

PAVEMENT AREA

PAVEMENT MARKING

SAWCUT

STORM CATCH BASIN

STORM DRAIN LINE

STORM MANHOLE

TAXIWAY REFLECTOR

TAXILANE OBJECT FREE AREA

TELEPHONE LINE

TRENCH DRAIN

TRENCH DRAIN INLET PROTECTION

TRENCH LIMITS

WATER LINE

WATER METER

WORK AREA

EXISTING PROPOSED

SCALES ACCORDINGLY.

THIS SHEET, ADJUST

IF NOT ONE INCH ON

0" 1"

ORIGINAL DRAWING.

BAR IS ONE INCH ON

VERIFY SCALES

APPRBYNO. DATE REVISIONS

SHEET NO.

DRAWING NO.

DATE:

APRIL 2026

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE

PROJECT NO: SCALE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

y:

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AS NOTED40097.134.02

CENTURY

WEST

E N G I N E E R I N G

PORTLAND OFFICE

5500 MEADOWS ROAD

SUITE #250

LAKE OSWEGO, OR 97035

503.419.2130 OFFICE

JAK

ALB

RHH

THIS PLAN SHEET IS INTENDED TO BE VIEWED

IN COLOR. THE FOLLOWING COLORS SHOULD

BE DISTINGUISHABLE WHEN PRINTED

CORRECTLY:

RED BLUE

A.I.P. NO. 3-41-0072-019-2025

78906PE

OREGON

EXPIRES: 6/30/27

SEPT 11 , 2012

RYAN HA J IME HA LVORSO

N

ENGINEER

RE

GIS

TERED PROFESSIONAL

DIGITALLY SIGNED

ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

BID SET

G-02

LEGEND AND GENERAL NOTES

GENERAL NOTES:

250'

249'

250'

249'

1. CONTRACTOR SHALL OBTAIN ALL REQUIRED PERMITS AND LICENSES BEFORE STARTING CONSTRUCTION.

2. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO VERIFY ALL UTILITY LOCATIONS PRIOR TO CONSTRUCTION AND ARRANGE FOR THE RELOCATION OF ANY IN CONFLICT WITH THE PROPOSED CONSTRUCTION.

THE LOCATIONS, DEPTH, AND DESCRIPTION OF EXISTING UTILITIES SHOWN WERE COMPILED FROM AVAILABLE RECORDS AND/OR SURVEYS. THE ENGINEER OR UTILITY COMPANIES DO NOT GUARANTEE THE ACCURACY OR THE COMPLETENESS OF SUCH RECORDS. ADDITIONAL UTILITIES MAY EXIST WITHIN THE WORK AREA. OREGON LAW REQUIRES THAT THE RULES ADOPTED BY OREGON UTILITY NOTIFICATION CENTER BE FOLLOWED. THOSE RULES ARE SET FORTH IN OAR 952-001-0090. YOU MAY OBTAIN COPIES OF THE RULES BY CALLING THE CENTER OR ACCESSING VIA INTERNET AT WWW.STATE.OR.US/GOVERNME.HTM CALL BEFORE YOU DIG - PORTLAND METRO

AREA 503-246-6699.

3. THE CONTRACTOR SHALL MAKE PROVISIONS TO KEEP ALL EXISTING UTILITIES IN SERVICE AND PROTECT THEM DURING CONSTRUCTION. CONTRACTOR SHALL IMMEDIATELY REPAIR OR REPLACE ANY DAMAGED UTILITIES USING MATERIALS AND METHODS APPROVED BY THE UTILITY OWNER. NO SERVICE INTERRUPTIONS SHALL BE PERMITTED

WITHOUT PRIOR WRITTEN AGREEMENT WITH THE UTILITY PROVIDER.

4. ALL WATERLINE CROSSINGS SHALL BE IN CONFORMANCE WITH OAR CHAPTER 333. MULINO WATER DISTRICT MAY REQUIRE MORE STRINGENT STANDARDS. CONTRACTOR SHALL NOTIFY PROJECT ENGINEER AND CITY OF PORTLAND ENGINEERING STAFF 48 HOURS IN ADVANCE OF STARTING CONSTRUCTION AND 24 HOURS BEFORE RESUMING WORK AFTER SHUTDOWNS, EXCEPT FOR NORMAL RESUMPTION OF WORK FOLLOWING A SATURDAY, SUNDAY, OR HOLIDAY.

5. CONTRACTOR SHALL REMOVE AND DISPOSE OF TREES, STUMPS, BRUSH, ROOTS, TOPSOIL, AND OTHER MATERIAL IN THE ROADWAY AND WHERE INDICATED ON THE PLANS. MATERIAL SHALL BE DISPOSED OF IN SUCH A MANNER AS

TO MEET ALL APPLICABLE REGULATIONS.

6. THE CONTRACTOR SHALL KEEP AN APPROVED SET OF PLANS ON THE PROJECT SITE AT ALL TIMES.

7. UPON COMPLETION OF CONSTRUCTION, THE CONTRACTOR SHALL SUBMIT "REDLINE DRAWINGS" TO PROJECT ENGINEER FOR PREPARATION OF RECORD DRAWINGS. "REDLINE DRAWINGS" DOCUMENT ALL DEVIATIONS AND REVISIONS TO THE APPROVED PLANS; THEY ALSO RECORD A DESCRIPTION OF CONSTRUCTION MATERIALS

ACTUALLY USED (PIPE MATERIAL, ETC.).

8. CONTRACTOR SHALL ERECT AND MAINTAIN TRAFFIC CONTROL PER THE "MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES", PART VI, CONSTRUCTION AND MAINTENANCE, AS ADOPTED AND MODIFIED BY ODOT. SHOULD WORK BE IN AN EXISTING PUBLIC RIGHT OF WAY THAT ARE OPEN TO TRAFFIC, THE CONTRACTOR SHALL SUBMIT A TRAFFIC CONTROL PLAN TO THE APPROPRIATE CITY, COUNTY, AND STATE PERSONNEL FOR APPROVAL. APPROVALS SHALL

BE OBTAINED PRIOR TO START OF WORK.

9. THE CONTRACTOR SHALL PERFORM ALL WORK NECESSARY TO COMPLETE THIS PROJECT IN ACCORDANCE WITH THE PLANS AND SPECIFICATIONS INCLUDING SUCH INCIDENTALS AS MAY BE NECESSARY TO MEET THE INTENT OF THE PROJECT CONTRACT DOCUMENTS, APPLICABLE AGENCY REQUIREMENTS AND OTHER WORK AS NECESSARY

TO PROVIDE A COMPLETE PROJECT.

10. THERE SHALL BE NO ALTERATION OR VARIANCE FROM THE APPROVED PLANS. THE MINIMUM SUBMITTAL REQUIREMENTS FOR PLAN REVISIONS ARE AS FOLLOWS; PLAN REVISIONS SHALL BE SUBMITTED ON AN 8 1/2" X 11" SHEET (MINIMUM), PLAN REVISION SHALL BE WET STAMPED AND SIGNED BY PROJECT ENGINEER, ANY REQUIRED ENGINEERING CALCULATIONS, OR OTHER AGENCY APPROVALS, SHALL BE INCLUDED WITH THE SUBMITTAL REVISION. UPON APPROVAL OF THE SUBMITTED REVISIONS, THE CITY ENGINEER SHALL AFFIX AN APPROVED STAMP TO THE REVISED PLAN SKETCH AND THE PLAN SHALL BE RETURNED TO THE PROJECT ENGINEER. IT IS THE RESPONSIBILITY OF THE PROJECT ENGINEER TO DISTRIBUTE THE APPROVED PLAN REVISION TO ALL PARTIES TO WHOM THE ORIGINAL APPROVED PLANS WERE ISSUED. ALL APPROVED REVISION SHALL BE AFFIXED TO THE

CONSTRUCTION FIELD PRINTS (ALSO KNOWN AS THE CONTRACTOR'S "REDLINE DRAWINGS").

11. CONTRACTOR SHALL PROVIDE EFFECTIVE EROSION PROTECTION TO INCLUDE, BUT NOT LIMIT TO, GRADING, DITCHING, HAY BALES, SILT FENCING, AND SEDIMENT BARRIERS TO MINIMIZE EROSION AND IMPACT TO ADJACENT

PROPERTY. SEE EROSION AND SEDIMENT CONTROL NOTES AND PLAN.

12. OPEN TRENCHES SHALL BE STRICTLY LIMITED TO A MAXIMUM OF 100 LINEAR FEET WITHIN STREET RIGHT-OF-WAY UNLESS LIMITED TO A LESSER AMOUNT BY PERMIT. NO TRENCHES WILL BE ALLOWED TO REMAIN OPEN OVERNIGHT.

13. CONTRACTOR SHALL MAINTAIN AND COORDINATE ACCESS TO ALL AFFECTED PROPERTIES.

14. ANY PAVEMENT DISTORTION CAUSED BY THE CONSTRUCTION OPERATIONS SHALL BE TEMPORARILY REPAIRED SAME DAY OF OCCURRENCE (OR IN A TIME PERIOD AGREED TO WITH THE CITY INSPECTOR), USING COLD OR HOT AC MIX. OWNER/CONTRACTOR SHALL BE REQUIRED TO MAINTAIN REPAIRED AREAS UNTIL CITY FINAL ACCEPTANCE

IS GRANTED.

15. IF GROUND WATER SPRINGS ARE ENCOUNTERED DURING CONSTRUCTION, THE CONTRACTOR SHALL IMMEDIATELY CONTACT THE PROJECT ENGINEER. THE PROJECT ENGINEER SHALL DIRECT THE CONTRACTOR TO TAKE MEASURES TO ENSURE THAT WATER IS NOT CONVEYED THROUGH THE UTILITY TRENCHES AND THE NATURAL FLOW PATH OF THE SPRING IS ALTERED AS LITTLE AS PRACTICABLE. THE PROJECT ENGINEER SHALL SUBMIT A REPORT SUMMARIZING THE FINDING TO THE CITY. IMPACTS AND MITIGATION SHALL BE ADDRESSED FOR THE CITY

APPROVAL.

16. IT IS THE CONTRACTOR'S RESPONSIBILITY TO VISIT THE SITE AND VERIFY ALL EXISTING CONDITIONS BEFORE THE START OF WORK. THE CONTRACTOR SHALL TAKE ALL NECESSARY FIELD MEASUREMENTS AND OTHERWISE VERIFY ALL DIMENSIONS AND EXISTING CONSTRUCTION CONDITIONS INDICATED AND/OR SHOWN ON THE PLANS. SHOULD ANY ERROR OR INCONSISTENCY EXIST, THE CONTRACTOR SHALL NOT PROCEED WITH THE WORK AFFECTED UNTIL

REPORTED TO THE PROJECT ENGINEER FOR CLARIFICATION OR CORRECTION.

17. ANY INSPECTION BY THE COUNTY, STATE, FEDERAL AGENCY, OR PROJECT ENGINEER SHALL NOT, IN ANY WAY, RELIEVE THE CONTRACTOR FROM ANY OBLIGATION TO PERFORM THE WORK IN COMPLIANCE WITH THE

APPLICABLE CODES, REGULATIONS, CITY STANDARDS AND PROJECT CONTRACT DOCUMENTS.

GRADING AND EROSION CONTROL GENERAL NOTES

1. 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.

2. LONG TERM SLOPE STABILIZATION MEASURES SHALL INCLUDE THE ESTABLISHMENT OF PERMANENT

VEGETATIVE COVER VIA SEEDING WITH APPROVED MIX AND APPLICATION RATE.

3. TEMPORARY SLOPE STABILIZATION MEASURES SHALL INCLUDE: COVERING EXPOSED SOIL WITH

PLASTIC SHEETING, STRAW MULCHING, WOOD CHIPS, OR OTHER APPROVED MEASURES.

4. 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.

5. 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 EXCEEDING 25% MAY REQUIRE ADDITIONAL EROSION

CONTROL MEASURES.

6. 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.

7. 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.

8. 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.

9. SATURATED MATERIALS THAT ARE HAULED OFF-SITE MUST BE TRANSPORTED IN WATER-TIGHT

TRUCKS TO ELIMINATE SPILLAGE OF SEDIMENT AND SEDIMENT-LADEN WATER.

10. 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.

11. SWEEPINGS FROM EXPOSED AGGREGATE CONCRETE SHALL NOT BE TRANSFERRED TO THE STORM

WATER SYSTEM. SWEEPINGS SHALL BE PICKED UP AND DISPOSED IN THE TRASH.

12. AVOID PAVING IN WET WEATHER WHEN PAVING CHEMICALS CAN RUN-OFF INTO THE STORM WATER

SYSTEM.

13. USE BMPs SUCH AS CHECK-DAMS, BERMS, AND INLET PROTECTION TO PREVENT RUN-OFF FROM

REACHING DISCHARGE POINTS.

14. 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.

X X X X X X X X X X X X X X X X X X X X

G-03

SITE AND SURVEY CONTROL

G-03SCALE: 1"= 40'

SITE & SURVEY CONTROL PLAN

N

PROPOSED HANGAR

CONTROL POINT TABLE

POINT #

NORTHING

573092.66'

573165.05'

573652.21'

EASTING

7664241.66'

7664404.61'

7664346.41'

ELEVATION

249.02'

248.80'

251.39'

DESCRIPTION

CNT IR RPC

CNT MAG

CNT MAG

LEGEND:

TAXILANE OBJECT FREE AREA

SURVEY CONTROL POINT

WORK AREA BOUNDARY

FENCE - BARBED WIRE

SURVEY NOTES:

1. THE COORDINATES SHOWN ARE BASED ON THE OREGON STATE PLANE

NORTH ZONE (3601).

HORIZONTAL DATUM: NAD 83 (2011) OREGON NORTH GRID COORDINATES

UTILIZING ODOT GPS NETWORK

VERTICAL DATUM: NAVD88

2. IF SHOWN, THE LOCATION OF EXISTING UNDERGROUND UTILITIES

THROUGHOUT THIS SET OF DRAWINGS ARE IN AN APPROXIMATE WAY ONLY

AND HAVE NOT BEEN INDEPENDENTLY VERIFIED BY THE OWNER OR ITS

REPRESENTATIVE. THE CONTRACTOR SHALL DETERMINE THE EXACT

LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK, AND

AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH

MIGHT BE OCCASIONED BY THE CONTRACTORS, FAILURE TO EXACTLY

LOCATE AND PRESERVE ANY AND ALL UNDERGROUND UTILITIES.

3. SURVEY WAS COMPLETED BY CRAWFORD, DRUMMOND & ASSOCIATES IN

OCTOBER 2025.

EXISTING HANGAR

S AIR

PO

R T R

D

S MULINO RD

LANDING WAY

EXISTING APRON

EXISTING

HANG

AR B 4 573659.29' 7664043.49' 252.48' CNT 58 IR RPC

EXISTING

HANG

AR A

EXISTING

HANG

AR C

MAIN ACCESS

SECURITY GATE

CP#1

CP#2

CP#3

CP#4

SCALES ACCORDINGLY.

THIS SHEET, ADJUST

IF NOT ONE INCH ON

0" 1"

ORIGINAL DRAWING.

BAR IS ONE INCH ON

VERIFY SCALES

APPRBYNO. DATE REVISIONS

SHEET NO.

DRAWING NO.

DATE:

APRIL 2026

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE

PROJECT NO: SCALE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

y:

\P ro je ct s\ or eg on d ep ar tm en t o f a vi at io n\

- m ul in o ha ng ar a nd w at er lin e

- d es ig n an d cm

\C

AD

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AS NOTED40097.134.02

CENTURY

WEST

E N G I N E E R I N G

PORTLAND OFFICE

5500 MEADOWS ROAD

SUITE #250

LAKE OSWEGO, OR 97035

503.419.2130 OFFICE

JAK

ALB

RHH

THIS PLAN SHEET IS INTENDED TO BE VIEWED

IN COLOR. THE FOLLOWING COLORS SHOULD

BE DISTINGUISHABLE WHEN PRINTED

CORRECTLY:

RED BLUE

A.I.P. NO. 3-41-0072-019-2025

78906PE

OREGON

EXPIRES: 6/30/27

SEPT 11 , 2012

RYAN HA JIME HA LVORSO

N

ENGINEER

RE

GIS

TERED PROFESSIONAL

DIGITALLY SIGNED

ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

BID SET

SECONDARY ACCESS

GATE

HANG

AR TAXILANE A

HAN

G

AR TAXILAN

E D

HANG

AR TAXILANE C

HANG

AR TAXILANE B

40 40 80

SCALE OF FEET

SCALE: 1"=40'

TLOFA

X X

PROPOSED

HANGAR PROPOSED

STORMWATER

FACILITY

SKYDIVE

LANDING

ZONE

EXISTING LANDSCAPE BERM

EXISTING LANDSCAPE BERM

N: 573653.4057

E: 7664627.7477

N: 573610.2982 E: 7664617.9815

N: 573588.8218 E: 7664487.4911

N: 573415.7145 E: 7664546.6505

N: 573373.2569 E: 7664428.2317

N: 573457.2521 E: 7664399.0426

N: 573432.4825 E: 7664325.3995

N: 573414.1565 E: 7664270.2403

N: 573392.5595 E: 7664205.7611

N: 573215.9093 E: 7664123.0381

N: 573199.2280 E: 7664076.8901

N: 573146.3449 E: 7664129.7902

N: 573152.9682 E: 7664146.1053

G-04SCALE: 1"= 40'

SITE & SURVEY CONTROL PLAN

G-04

CONSTRUCTION SITE AND SAFETY PHASING PLAN

SECONDARY ACCESS

GATE

S AIR

PO

R T R

D

NOTES:

1. ALL WORK SHALL BE COMPLETE WITHIN 180 CALENDAR DAYS OF CONTRACT NOTICE TO PROCEED. THE

RUNWAY SHALL REMAIN OPEN WHEN WORK IS PERFORMED.

2. WORK EXEMPT FROM CALENDAR DAY CONTRACT PERIOD INCLUDES THE SECOND APPLICATION OF

PAVEMENT MARKINGS. A CONTINUOUS 1 CALENDAR DAY (24 HOUR) CLOSURE FOR THE SECOND

APPLICATION OF PAVEMENT MARKINGS WILL BE PERMITTED, A MINIMUM OF 30 DAYS AFTER PAVING

OPERATIONS HAVE BEEN COMPLETED.

3. PROVIDE FOR AND MAINTAIN PUBLIC PARKING AND ACCESS TO EXISTING AIRPORT HANGARS WHERE

APPLICABLE.

4. CONTRACTOR SHALL MAINTAIN THE EXISTING ACCESS AND REPAIR ANY DAMAGE AT THE CONCLUSION OF

CONSTRUCTION. PAYMENT FOR THIS WORK IS INCIDENTAL TO THE PROJECT.

5. STAGING AREA AND STAGING AREA ACCESS WIDTH, LENGTH, DEPTH, MATERIAL, AND UTILITY PROTECTION IMPROVEMENTS TO BE DETERMINED BY THE CONTRACTOR AND SUBMITTED TO THE OWNER

FOR APPROVAL. AT THE CONCLUSION OF THE PROJECT, THE CONTRACTOR SHALL REMOVE AND

RESTORE THE STAGING AREA AND STAGING AREA ACCESS TO ITS ORIGINAL CONDITION.

6. CONTRACTOR SHALL CONTROL DUST AND SMOKE RELATED TO CONSTRUCTION ACTIVITIES AT ALL TIMES.

7. FOR GEOTECHNICAL INFORMATION, REFER TO THE MULINO STATE AIRPORT HANGAR AND WATERLINE

GEOTECHNICAL ENGINEERING REPORT FROM GRI, INC ON FEBRUARY 4TH 2026.

8. TEMPORARY TRAFFIC CONTROL BARRICADES TO BE INSTALLED AT THE NORTH END OF TAXILANE C, D, AND AROUND THE PERIMETER OF THE PROPOSED STORMWATER FACILITY.

9. THE TERM "DAY" SHALL BE TAKEN TO MEAN A CALENDAR DAY OF 24 HOURS, BEGINNING AT 12:00

MIDNIGHT, SATURDAYS, SUNDAYS, AND HOLIDAYS SHALL BE INCLUDED.

10. SEE CSPP FOR FULL SAFETY AND PHASING REQUIREMENTS.

11. CONTRACTOR SHALL IMPLEMENT SPCD IN ACCORDANCE WITH SECTION 01300 OF THE SPECIFICATIONS.

12. CONTRACTOR TO COORDINATE WITH THE ENGINEER AND OWNER FOR COMPLETION AND SUBMITTAL OF

FAA FORM 7460-1.

13. CONTRACTOR SHALL PROVIDE WRITTEN NOTICE TO THE ENGINEER AND AIRPORT MANAGER AT LEAST 14 CALENDAR DAYS IN ADVANCE OF THE PLANNED COMMENCEMENT OF CONSTRUCTION ACTIVITY. THE AIRPORT MANAGER WILL ISSUE APPLICABLE NOTAMS NO LATER THAN 72 HOURS PRIOR TO THE START OF

CLOSURE ACTIVITIES.

LEGEND:

TAXILANE OBJECT FREE AREA

WORK AREA 1 BOUNDARY

CONTRACTOR HAUL ROUTE

BARRICADES

CONTRACTOR STAGING AREA

PROJECT

PHASE DURATION

CALENDAR

DAY

CONSTRUCTION SCHEDULE & OPERATIONS

WORK SCOPE RUNWAY STATUS

RW 14-32

OPEN

-CONSTRUCTION ACCESS

-TEMPORARY TRAFFIC CONTROL

-TEMPORARY EROSION CONTROL

-PAVEMENT REMOVAL

-EXISTING UTILITY REROUTE

-EXCAVATION

-BASE ROCK PLACEMENT

-STORMWATER IMPROVEMENTS

-SITE ELECTRICAL IMPROVEMENTS

-HANGAR SLAB AND FOUNDATION

CONSTRUCTION

-HANGAR BUILDING CONSTRUCTION

-HANGAR BUILDING ELECTRICAL

CONSTRUCTION

-ASPHALT PAVING

-SURFACE SWEEPING

-PAVEMENT MARKINGS

-FOD REMOVAL

TAXIWAY STATUS

TW A

OPENEXISTING HANGAR

MAIN ACCESS

GATE

S MULINO RD

EXISTING APRON

EXISTING

HANG

AR B

EXISTING

HANG

AR C

CONSTRUCTION HAUL

ROUTE TO HWY 213

LOW LEVEL

BARRICADE

CONTRACTOR

STAGING AREA

SCALES ACCORDINGLY.

THIS SHEET, ADJUST

IF NOT ONE INCH ON

0" 1"

ORIGINAL DRAWING.

BAR IS ONE INCH ON

VERIFY SCALES

APPRBYNO. DATE REVISIONS

SHEET NO.

DRAWING NO.

DATE:

APRIL 2026

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE

PROJECT NO: SCALE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

y:

\P ro je ct s\ or eg on d ep ar tm en t o f a vi at io n\

- m ul in o ha ng ar a nd w at er lin e

- d es ig n an d cm

\C

AD

W

O R

KI

N

G \1

S

IT

E

PH

AS

IN

G A

N D

S

AF

ET

Y

PL

AN

.d w g

AS NOTED40097.134.02

CENTURY

WEST

E N G I N E E R I N G

PORTLAND OFFICE

5500 MEADOWS ROAD

SUITE #250

LAKE OSWEGO, OR 97035

503.419.2130 OFFICE

JAK

ALB

RHH

THIS PLAN SHEET IS INTENDED TO BE VIEWED

IN COLOR. THE FOLLOWING COLORS SHOULD

BE DISTINGUISHABLE WHEN PRINTED

CORRECTLY:

RED BLUE

A.I.P. NO. 3-41-0072-019-2025

78906PE

OREGON

EXPIRES: 6/30/27

SEPT 11 , 2012

RYAN HA JIME HA LVORSO

N

ENGINEER

RE

GIS

TERED PROFESSIONAL

DIGITALLY SIGNED

ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

BID SET

LOW LEVEL

BARRICADE

PROPOSED HANGAR

WORK

AREA

HANG

AR TAXILANE A

HANG

AR TAXILANE D

HANG

AR TAXILANE C

HANG

AR TAXILANE B

N

40 40 80

SCALE OF FEET

SCALE: 1"=40'

G-05

G-05

LOW LEVEL

BARRICADE

G-05

LANDING WAY

EXISTING

HANG

AR A

UP TO 90

DAYS SUBMITTAL AND BUILDING PERMIT OPEN OPEN

PROPOSED

HANGAR PROPOSED

STORMWATER

FACILITY

SKYDIVE

LANDING

ZONE

G-05

SITE SAFETY & PHASING PLAN NOTES

GENERAL WORK AREA NOTES:

1. THE CONTRACTOR SHALL BE RESTRICTED TO USE THE ENTRANCE AND HAULING ROUTES SHOWN ON THE DRAWINGS. FOLLOW AIRPORT

AND FAA SAFETY PROCEDURES WHEN MOVING EQUIPMENT OR PERSONNEL. NO PERSONAL VEHICLES SHALL BE ALLOWED OUTSIDE OF THE STAGING AREA. THE AIRPORT MAY IMMEDIATELY REMOVE ANY PERSONNEL AND EQUIPMENT FROM THE SITE IN VIOLATION OF

AIRPORT SAFETY AND SECURITY PROCEDURES.

2. AVOID IMPACTS TO AIRFIELD LIGHTING AND PAVEMENTS OUTSIDE WORK AREA. PROVIDE TEMPORARY CONNECTIONS TO KEEP

ELECTRICAL SYSTEMS ENERGIZED OUTSIDE OF THE WORK AREA.

3. LIMIT EQUIPMENT HEIGHT TO 12 FEET UNLESS OTHERWISE APPROVED BY THE ENGINEER.

4. LIMITS STOCKPILES TO 12 FEET IN HEIGHT AND AT LEAST 250 FEET FROM THE RUNWAY CENTERLINE AND 65.5 FEET FROM TAXIWAY

CENTERLINE.

5. IN THE EVENT OF AN EMERGENCY, MOVE ALL EQUIPMENT AND PERSONNEL TO THE CONTRACTOR'S STAGING AREA UNLESS OTHERWISE

DIRECTED BY THE ENGINEER.

6. ACCESS TO ANY WORK AREA MUST BE AUTHORIZED BY THE ENGINEER PRIOR TO WORK IN THAT AREA. NOTIFY THE ENGINEER A

MINIMUM OF 72 HOURS PRIOR TO BEGINNING WORK IN ANY AREA.

7. CONTRACTOR SHALL PROVIDE WRITTEN NOTICE TO THE ENGINEER AND AIRPORT MANAGER AT LEAST 14 CALENDAR DAYS IN ADVANCE OF THE PLANNED COMMENCEMENT OF CONSTRUCTION ACTIVITY. THE AIRPORT MANAGER WILL ISSUE APPLICABLE NOTAMS NO LATER

THAN 72 HOURS PRIOR TO THE START OF CLOSURE ACTIVITIES.

8. SEE SECTION 01300 OF THE TECHNICAL SPECIFICATIONS. ANY WORK WITHIN 250 FEET OF THE RUNWAY 14-32 CENTERLINE OR WITHIN

300 FEET OF THE RUNWAY END WILL REQUIRE A RUNWAY CLOSURE.

9. PLACE LOW LEVEL BARRICADES AS SHOWN AND AS DESCRIBED IN SECTION 01300 OF THE TECHNICAL SPECIFICATIONS.

10. IN THE EVENT OF NIGHTTIME CONSTRUCTION, LIGHTING EQUIPMENT MUST ADEQUATELY ILLUMINATE THE WORK AREA PER AC

150/5370-2G OPERATIONAL SAFETY ON AIRPORTS DURING CONSTRUCTION.

11. FOR ADDITIONAL REQUIREMENTS, REFER TO SECTION 01300, AIRPORT SAFETY, IN THE TECHNICAL SPECIFICATIONS.

12. WHILE WORKING IN ANY AREA, THE CONTRACTOR SHALL HAVE AN AIRPORT RADIO CAPABLE OF MONITORING THE AIRPORT UNICOM

FREQUENCY:

CTAF/UNICOM: 123.05 MHZ.

RADIO TRAININGS ARE REQUIRED FOR STAFF ASSIGNED TO MONITOR THE RADIO.

13. CONTRACTOR SHALL MOVE ALL EQUIPMENT TO THE STAGING AREA AT THE COMPLETION OF EACH WORK SHIFT.

14. DISENGAGE LIGHTING CIRCUITS, DARKEN LIGHT FIXTURES, AND COVER GUIDANCE SIGNS AS DIRECTED BY THE AIRPORT TO PREVENT AIRCRAFT FROM TAXIING TOWARDS CLOSED WORK AREAS. ALL AIRPORT LIGHTING SHALL BE DISENGAGED DURING A RUNWAY

CLOSURE.

15. RUNWAY CLOSURES WILL REQUIRE THE SHUTDOWN OF AIRPORT NAVAIDS AND FAA OWNED FACILITIES. THE CONTRACTOR IS REQUIRED TO NOTIFY THE ENGINEER OF ANY CLOSURE 45 CALENDAR DAYS IN ADVANCE OF THE CLOSURE.

16. NAVAID SHUTDOWN, IF REQUIRED, WILL BE MADE PUBLIC TO AIRFIELD USERS VIA NOTAM.

17. ENGINEERING CONSULTANT POINT-OF-CONTACT:

RYAN HALVORSON, PE

503-419-2130

18. CONTRACTOR SHALL PREVENT WILDLIFE ATTRACTANTS PER FAA 150/5200-33C HAZARDOUS WILDLIFE ATTRACTANTS ON OR NEAR

AIRPORTS.

19. SPECIFIC WEATHER CONDITIONS MUST BE MET FOR THE PAVEMENT MARKING APPLICATION. CONTRACTOR TO COORDINATE WITH ENGINEER TO DETERMINE IF PAVEMENT MARKING APPLICATION IS DEASIBLE A MINIMUM OF 12 HOURS BEFORE PLANNED APPLICATION.

IF UNPREDICTED WEATHER OCCURS, THE ENGINEER MAY POSTPONE APPLICATION. SEE WEATHER LIMITATIONS SECTION P-620-3.1 IN

THE TECHNICAL SPECIFICATIONS.

SEQUENCING NOTES:

1. COORDINATE WORK AREA CLOSURES WITH THE AIRPORT TO

ENSURE ACCESS AS NEEDED TO MAINTAIN AIRPORT

OPERATIONS, INCLUDING PROVIDING FOR AND MAINTAINING

ACCESS TO THE FOLLOWING:

· ACCESS TO HANGARS

· ACCESS TO APRONS

· RUNWAY AND TAXIWAY ACCESS WHEN ALLOWED

2. RUNWAY AND TAXIWAY MARKINGS SHALL BE IN PLACE ANY

TIME RUNWAYS/TAXIWAYS ARE OPEN TO AIR TRAFFIC.

3. DISENGAGE EXISTING BEACON, GUIDANCE SIGNS, NAVAIDS

AND RUNWAY LIGHT CIRCUITS ANY TIME THE RUNWAY IS

CLOSED.

WORK IN SAFETY AREAS AND OBJECT FREE AREAS:

1. RUNWAY SAFETY AREA (RSA) AND TAXIWAY SAFETY AREA (TSA) AREAS ARE DEFINED AS

AREAS THAT SHALL BE CLEARED AND GRADED AND HAVE NO POTENTIALLY HAZARDOUS

RUTS, HUMPS, DEPRESSIONS, OR OTHER SURFACE VARIATIONS. THE MAXIMUM SLOPE

ANYWHERE WITHIN A RUNWAY OR TAXIWAY SAFETY AREA SHALL BE 5%. IN TRANSITIONS

FROM PAVED TO UNPAVED AREAS, A 3 INCH MAXIMUM VERTICAL DROP IS ALLOWED. THE

RUNWAY AND TAXIWAY SAFETY AREAS SHALL BE MAINTAINED AT ALL TIMES WHEN THE

RUNWAY AND TAXIWAY IS OPEN TO AIR TRAFFIC. PERSONNEL, EQUIPMENT, OR MATERIAL

WITHIN A RUNWAY SAFETY AREA AT ANY TIME REQUIRES A CLOSURE. SAFETY AREAS THAT

ARE CLOSED FOR CONSTRUCTION MUST MEET THESE CRITERIA PRIOR TO REOPENING.

2. THE CONTRACTOR SHALL ANTICIPATE THE CONSTRUCTION OF TEMPORARY FILLS,

COMPACTION, AND GRADING TO MEET THE REQUIREMENTS OF "WORK IN SAFETY AREAS AND

OBJECT FREE AREAS" PRIOR TO REOPENING RUNWAYS AND TAXIWAYS. THIS WORK IS

CONSIDERED INCIDENTAL TO VARIOUS WORK ITEMS AND SEPARATE PAYMENT WILL NOT BE

MADE.

3. CONTRACTOR SHALL NOT ENTER ANY ACTIVE RSA OR TSA WITHOUT AUTHORIZATION FROM

THE AIRPORT. ALL EQUIPMENT, TOOLS, AND MATERIALS SHALL BE MOVED TO STAGING AREAS

PRIOR TO REOPENING A RUNWAY OR TAXIWAY.

4. SAFETY AREA LIMITS:

RUNWAY 14-32 - 75 FEET FROM ; 300 FEET FROM THRESHOLD/RUNWAY END (RSA)

- (60 FEET FROM MIN. STANDARD)

TAXIWAYS - 39.5 FEET FROM

- (24.5 FEET FROM MIN. STANDARD)

5. RUNWAY AND TAXIWAY OBJECT FREE AREAS ARE DEFINED AS AREAS THAT SHALL BE CLEAR

OF FIXED OR MOVABLE OBJECTS. EQUIPMENT NOT IN USE, AND MATERIAL STOCKPILES AND

STORAGE SHALL BE PLACED AT LEAST 250 FEET (CURRENT DESIGN, 125 FEET STANDARD MIN.)

FROM ANY RUNWAY CENTERLINE. NO WORK MAY OCCUR IN TAXIWAY OBJECT FREE AREAS

UNLESS THE TAXIWAY IS CLOSED TO AIRCRAFT TRAFFIC. NO STORAGE OF EQUIPMENT,

MATERIALS OR STOCKPILES IS ALLOWED WITHIN TAXIWAY OBJECT FREE AREAS.

6. PERSONNEL, MATERIAL, AND/OR EQUIPMENT MAY NOT PENETRATE THE OBSTACLE FREE

ZONE WHILE THE RUNWAY IS OPEN FOR AIRCRAFT OPERATIONS.

7. OBJECT FREE AREA LIMITS: OBSTACLE FREE ZONE LIMITS:

RUNWAY 14-32 - 250 FEET FROM RUNWAY 14-32 -200 FEET FROM

TAXIWAYS - 65.5 FEET FROM

(44.5 FEET MIN STANDARD)

TAXILANES - 57.5 FEET FROM

8. RUNWAY AND TAXIWAY SAFETY AREA AND RUNWAY AND TAXIWAY OBJECT FREE ZONE

CRITERIA MUST BOTH BE MET PRIOR TO OPENING AN IMPACTED RUNWAY OR TAXIWAY.

PHASE 1 WORK SCHEDULE AND PHASING NOTES:

1. ALL WORK SHALL BE COMPLETED WITHIN 180 CONTINUOUS CALENDAR DAYS OF

CONTRACT NOTICE TO PROCEED. WORK WITHIN THE 180 CONTINUOUS CALENDAR

DAY PERIOD SHALL BE COMPLETED IN A SINGLE PHASE. FOR MORE INFORMATION,

SEE DRAWING G-04.

1. NOTICE TO PROCEED FOR CONSTRUCTION IS ANTICIPATED SEPTEMBER 2026, AT THE

CONVENIENCE OF THE OWNER.

2. WORK EXEMPT FROM THE 180 CALENDAR DAY CONTRACT PERIOD INCLUDES THE

SECOND APPLICATION OF PAVEMENT MARKINGS. A CONTINUOUS 1 CALENDAR DAY

(24 HOUR) CLOSURE FOR THE SECOND APPLICATION OF PAVEMENT MARKINGS WILL

BE PERMITTED, A MINIMUM OF 30 DAYS AFTER PAVEMENT HAS BEEN COMPLETED.

C L C L

SCALES ACCORDINGLY.

THIS SHEET, ADJUST

IF NOT ONE INCH ON

0" 1"

ORIGINAL DRAWING.

BAR IS ONE INCH ON

VERIFY SCALES

APPRBYNO. DATE REVISIONS

SHEET NO.

DRAWING NO.

DATE:

APRIL 2026

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE

PROJECT NO: SCALE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

y:

\P ro je ct s\ or eg on d ep ar tm en t o f a vi at io n\

- m ul in o ha ng ar a nd w at er lin e

- d es ig n an d cm

\C

AD

W

O R

KI

N

G \1

S

IT

E

PH

AS

IN

G A

N D

S

AF

ET

Y

PL

AN

.d w g

AS NOTED40097.134.02

CENTURY

WEST

E N G I N E E R I N G

PORTLAND OFFICE

5500 MEADOWS ROAD

SUITE #250

LAKE OSWEGO, OR 97035

503.419.2130 OFFICE

JAK

ALB

RHH

THIS PLAN SHEET IS INTENDED TO BE VIEWED

IN COLOR. THE FOLLOWING COLORS SHOULD

BE DISTINGUISHABLE WHEN PRINTED

CORRECTLY:

RED BLUE

A.I.P. NO. 3-41-0072-019-2025

78906PE

OREGON

EXPIRES: 6/30/27

SEPT 11 , 2012

RYAN HA JIME HA LVORSO

N

ENGINEER

RE

GIS

TERED PROFESSIONAL

DIGITALLY SIGNED

ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

BID SET

C L C L

C L

C

L

ORANGE / WHITE STRIPE

HIGH REFLECTIVE SHEETING

INSTALL BATTERY OR SOLAR POWERED

RED LENS STANDARD BARRICADE LIGHT

8'-0"

10"

ELEVATION

FILL WITH WATER

OR SAND

ORANGE BODY

SELF-CONNECTING

PINS

NOTES:

1. BARRICADES SHALL MEET THE REQUIREMENTS OF SECTION 2.20.2, FIGURE 2-8, AND FIGURE 2-9 OF

AC 150/5370-2G OPERATIONAL SAFETY ON AIRPORTS DURING CONSTRUCTION.

2. PLACE BARRICADE PER THE PLANS OR AS DIRECTED BY THE ENGINEER.

3. BARRICADES SHALL BE PROVIDED BY THE CONTRACTOR. THE CONTRACTOR SHALL BE

RESPONSIBLE FOR PLACING, FILLING, EMPTYING, MOVING, MAINTAINING AND PROTECTING

BARRICADES THROUGHOUT THE DURATION OF THE PROJECT.

4. LIGHTS ARE TO BE NO FARTHER APART THAN 10' WHEN PLACED.

5. BARRICADES SHALL BE NOT FARTHER THAN 10' APART.

6. BARRICADES SHALL BE COVERED WITH REFLECTIVE SHEETING OR OTHER MATERIAL APPROVED BY

THE ENGINEER.

7. BARRICADES SHALL BE APPROPRIATELY WEIGHTED DOWN TO RESTRICT MOVEMENT FROM HIGH

WINDS OR PROP WASH.

SCALE: N.T.S.

G-05

LOW LEVEL BARRICADE DETAIL

VARIES 6'-0"

C L C L

PHASE 0 WORK SCHEDULE AND PHASING NOTES:

1. SUBMITTAL AND BUILDING PERMIT PHASE SHALL BE COMPLETED WITHIN 90 CALENDAR DAYS OF CONTRACTOR NOTICE

TO PROCEED IN A SINGLE PHASE.

2. NOTICE TO PROCEED FOR SUBMITTAL AND BUILDING PERMIT IS ANTICIPATED JUNE 2026, AT THE CONVENIENCE OF

THE OWNER.

3. CONTRACTOR SHALL COORDINATE, PREPARE, AND PROVIDE ALL REQUIRED SUBMITTALS PER SPECIFICATIONS, INCLUDING BUT NOT LIMITED TO HANGAR STRUCTURAL DESIGN DRAWINGS, FOUNDATION AND SLAB DESIGN, ELECTRICAL, AND ALL LOCAL BUILDING PERMITS REQUIRED.

4. CONTRACTOR TO COORDINATE SUBMITTAL SCHEDULE WITH ENGINEER.

5. MATERIALS SHALL BE ORDERED AND DELIVERED TO THE SITE WITH ADEQUATE TO BE UTILIZED IN THE SUBSEQUENT

PHASE 1 CONSTRUCTION PHASE.

6. NO ON-SITE WORK ALLOWED UNTIL ALL HANGAR BUILDING SHOP DRAWINGS, FOUNDATION AND SLAB DESIGN, ELECTRICAL, AND LOCAL BUILDING PERMITS HAVE BEEN APPROVED AND ISSUED TO THE CONTRACTOR.

248'248'

249'

249'

250'

250'

247' 248'249'

249'

251'

251'

250'

250'

248'

249'

249'

251'

251' 252'

252'

N: 573590.6008 E: 7664136.5553

N: 573627.0708 E: 7664192.1387

N: 573663.5409 E: 7664247.7220

N: 573662.7199 E: 7664313.1207 N: 573662.0919

E: 7664336.4387

N: 573649.0633 E: 7664460.8409

N: 573611.6441 E: 7664483.9589 N: 573629.2822

E: 7664595.1994

N: 573695.9708 E: 7664613.9039

N: 573695.1214 E: 7664638.7957

N: 573610.9140 E: 7664620.2756

N: 573589.5448 E: 7664483.9856

N: 573418.2204 E: 7664542.2876

N: 573376.3141 E: 7664427.2286

N: 573592.7910 E: 7664354.1692

EC-01SCALE: 1"= 40'

EROSION CONTROL PLAN

LEGEND:

TAXILANE OBJECT FREE AREA

WORK AREA

EXISTING MAJOR CONTOURS

EXISTING MINOR CONTOURS

SEDIMENT FENCE

INLET PROTECTION, TYPE 4

GRAVEL CONSTRUCTION

ENTRANCE

TRENCH DRAIN PROTECTION

OUTLET PROTECTION RIP RAP

CONCRETE WASHOUT

INLET PROTECTION, TYPE 5

OUTFALL PROTECTION BIO-FILTER

BAGS

CONTRACTOR TO PROTECT CONSTRUCTION AREA AND

PROVIDE NOXIOUS WEED CONTROL AS NECESSARY

NOTES:

1. ALL EROSION CONTROL DEVICES SHALL BE INSTALLED AND INSPECTED BY THE ENGINEER

PRIOR TO ANY GROUND DISTURBING ACTIVITIES.

2. ALL AIRPORT PAVEMENTS SHALL BE KEPT FREE OF ALL FOREIGN OBJECT DEBRIS (FOD) BY

SWEEPER OR VAC-TRUCK AS NEEDED OR AS DIRECTED BY THE ENGINEER. AT MINIMUM, THE

PAVEMENT SURFACE WILL BE SWEPT AT THE END OF THE WORK DAY.

3. WORK SHALL BE IN ACCORDANCE WITH OREGON DEQ 1200-C PERMIT FOR THE PROJECT.

4. PLACE SEDIMENT BARRIER (SILT FENCE) AROUND STOCK PILES AS NEEDED.

5. HYDROSEED STAGING AREAS, HAUL ROUTES, AND OTHER DISTURBED SURFACES, UNLESS

OTHERWISE SHOWN, OUTSIDE OF DAYLIGHT LIMITS AT NO COST TO THE OWNER.

HYDROSEEDING SHALL NOT OCCUR ON GRAVEL SHOULDERS. REFER TO TECHNICAL

SPECIFICATIONS FOR ADDITIONAL SEEDING REQUIREMENTS.

6. REFER TO DRAWING EC-02 FOR EROSION AND SEDIMENT CONTROL STANDARD NOTES AND

DRAWING EC-03 FOR EROSION AND SEDIMENT CONTROL ADDITIONAL NOTES.

7. PROPOSED IMPROVEMENTS DOES NOT CHANGE THE EXISTING FLOW DIRECTION.

8. CONSTRUCTION STAGING AREA TO CONTAIN STOCKPILE, PORTABLE TOILET, CONSTRUCTION

FUEL, AND MATERIALS.

EC-01

EROSION CONTROL

SCALES ACCORDINGLY.

THIS SHEET, ADJUST

IF NOT ONE INCH ON

0" 1"

ORIGINAL DRAWING.

BAR IS ONE INCH ON

VERIFY SCALES

APPRBYNO. DATE REVISIONS

SHEET NO.

DRAWING NO.

DATE:

APRIL 2026

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE

PROJECT NO: SCALE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

y:

\P ro je ct s\ or eg on d ep ar tm en t o f a vi at io n\

- m ul in o ha ng ar a nd w at er lin e

- d es ig n an d cm

\C

AD

W

O R

KI

N

G \1

E R

O

SI

O N

C O

N

TR

O L.

dw g

AS NOTED40097.134.02

CENTURY

WEST

E N G I N E E R I N G

PORTLAND OFFICE

5500 MEADOWS ROAD

SUITE #250

LAKE OSWEGO, OR 97035

503.419.2130 OFFICE

JAK

ALB

RHH

THIS PLAN SHEET IS INTENDED TO BE VIEWED

IN COLOR. THE FOLLOWING COLORS SHOULD

BE DISTINGUISHABLE WHEN PRINTED

CORRECTLY:

RED BLUE

A.I.P. NO. 3-41-0072-019-2025

78906PE

OREGON

EXPIRES: 6/30/27

SEPT 11 , 2012

RYAN HA JIME HA LVORSO

N

ENGINEER

RE

GIS

TERED PROFESSIONAL

DIGITALLY SIGNED

ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

BID SET

PROPOSED

HANGAR

SECONDARY ACCESS

GATE

EXISTING

HANG

AR A

S MULINO RD

LANDING WAY

EXISTING APRON

EXISTING

HANG

AR B

EXISTING

HANG

AR C

HANG

AR TAXILANE A

HAN

G

AR TAXILANE D

HANG

AR TAXILANE C

H

AN

G

AR

TAXILAN

E B

N

40 40 80

SCALE OF FEET

SCALE: 1"=40'

249'

250'

EXISTING HANGAR

*CONSTRUCTION ACCESS

*TEMPORARY TRAFFIC CONTROL

*TEMPORARY EROSION CONTROL

EROSION CONTROL KEY NOTES:

INSTALL OUTLET PROTECTION RIP RAP, SEE DETAIL 2, SHEET EC-04.

INSTALL CONSTRUCTION ENTRANCE, SEE DWG. NO. 4-11, SHEET EC-04.

INSTALL SEDIMENT FENCE, SEE DWG. NO. 4-15, SHEET EC-04.

INSTALL CONCRETE WASHOUT, SEE DWG. NO. 4-20, SHEET EC-04.

INSTALL INLET PROTECTION, TYPE 4, SEE DWG. NO. 4-23, SHEET EC-04.

INSTALL INLET PROTECTION, TYPE 5, SEE DWG. NO. 4-24, SHEET EC-04.

INSTALL TRENCH DRAIN INLET PROTECTION, SEE DETAIL 1, SHEET EC-04.

3 3

PROPOSED

STORMWATER

FACILITY

SKYDIVE

CONTRACTOR TO PROTECT CONSTRUCTION AREA AND

PROVIDE NOXIOUS WEED CONTROL AS NECESSARY

1. INCLUDE A LIST OF ALL PERSONNEL (BY NAME AND POSITION) THAT ARE RESPONSIBLE FOR THE DESIGN, INSTALLATION AND MAINTENANCE OF STORMWATER CONTROL MEASURES (E.G. ESCP DEVELOPER, BMP INSTALLER (SEE SECTION 4.10), AS WELL AS THEIR INDIVIDUAL RESPONSIBILITIES. (SECTION 4.4.C.II)

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

REQUIREMENTS. (SECTION 6.5)

3. INSPECTION LOGS MUST BE KEPT IN ACCORDANCE WITH DEQ 1200-C PERMIT REQUIREMENTS. (SECTION 6.5.Q)

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. (SECTION 4.7)

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. (SECTION 4 AND 4.11)

6. THE ESCP MUST BE ACCURATE AND REFLECT SITE CONDITIONS. (SECTION 4.8)

7. SUBMISSION OF ALL ESCP REVISIONS IS NOT REQUIRED. SUBMITTAL OF THE ESCP REVISIONS IS ONLY UNDER SPECIFIC CONDITIONS. SUBMIT ALL NECESSARY REVISION TO DEQ OR AGENT WITHIN 10 DAYS.

(SECTION 4.9)

8. SEQUENCE CLEARING AND GRADING TO THE MAXIMUM EXTENT PRACTICAL TO PREVENT EXPOSED INACTIVE

AREAS FROM BECOMING A SOURCE OF EROSION. (SECTION 2.2.2)

9. CREATE SMOOTH SURFACES BETWEEN SOIL SURFACE AND EROSION AND SEDIMENT CONTROLS TO

PREVENT STORMWATER FROM BYPASSING CONTROLS AND PONDING. (SECTION 2.2.3)

10. 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. (SECTION 2.2.1)

11. PRESERVE EXISTING VEGETATION WHEN PRACTICAL AND RE-VEGETATE OPEN AREAS. RE-VEGETATE OPEN AREAS WHEN PRACTICABLE BEFORE AND AFTER GRADING OR CONSTRUCTION. IDENTIFY THE TYPE OF

VEGETATIVE SEED MIX USED. (SECTION 2.2.5)

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

(SECTION 2.2.4)

13. INSTALL PERIMETER SEDIMENT CONTROL, INCLUDING STORM DRAIN INLET PROTECTION AS WELL AS ALL

SEDIMENT BASINS, TRAPS, AND BARRIERS PRIOR TO LAND DISTURBANCE. (SECTIONS 2.1.3)

14. CONTROL BOTH PEAK FLOW RATES AND TOTAL STORMWATER VOLUME, TO MINIMIZE EROSION AT OUTLETS

AND DOWNSTREAM CHANNELS AND STREAMBANKS. (SECTIONS 2.1.1 AND 2.2.16)

15. CONTROL SEDIMENT AS NEEDED ALONG THE SITE PERIMETER AND AT ALL OPERATIONAL INTERNAL STORM DRAIN INLETS AT ALL TIMES DURING CONSTRUCTION, BOTH INTERNALLY AND AT THE SITE BOUNDARY.

(SECTIONS 2.2.6 AND 2.2.13)

16. ESTABLISH CONCRETE TRUCK AND OTHER CONCRETE EQUIPMENT WASHOUT AREAS BEFORE BEGINNING

CONCRETE WORK. (SECTION 2.2.14)

17. APPLY TEMPORARY AND/OR PERMANENT SOIL STABILIZATION MEASURES IMMEDIATELY ON ALL DISTURBED AREAS AS GRADING PROGRESSES. TEMPORARY OR PERMANENT STABILIZATION MEASURES ARE NOT REQUIRED FOR AREAS THAT ARE INTENDED TO BE LEFT UNVEGETATED, SUCH AS DIRT ACCESS ROADS OR

UTILITY POLE PADS. (SECTIONS 2.2.20 AND 2.2.21)

18. ESTABLISH MATERIAL AND WASTE STORAGE AREAS, AND OTHER NON-STORMWATER CONTROLS. (SECTION 2.3.7)

19. KEEP WASTE CONTAINER LIDS CLOSED WHEN NOT IN USE AND CLOSE LIDS AT THE END OF THE BUSINESS DAY FOR THOSE CONTAINERS THAT ARE ACTIVELY USED THROUGHOUT THE DAY. FOR WASTE CONTAINERS THAT DO NOT HAVE LIDS, PROVIDE EITHER (1) COVER (E.G., A TARP, PLASTIC SHEETING, TEMPORARY ROOF) TO PREVENT EXPOSURE OF WASTES TO PRECIPITATION, OR (2) A SIMILARLY EFFECTIVE MEANS DESIGNED TO PREVENT THE DISCHARGE OF POLLUTANTS (E.G., SECONDARY CONTAINMENT). (SECTION 2.3.7)

20. PREVENT TRACKING OF SEDIMENT ONTO PUBLIC OF PRIVATE ROADS USING BMPS SUCH AS: CONSTRUCTION ENTRANCE, GRAVELED (OR PAVED) EXITS AND PARKING AREAS, GRAVEL ALL UNPAVED ROADS LOCATED ONSITE, OR USE AN EXIT TIRE WASH. THESE BMPS MUST BE IN PLACE PRIOR TO LAND-DISTURBING

ACTIVITIES. (SECTION 2.2.7)

21. WHEN TRUCKING SATURATED SOILS FROM THE SITE, EITHER USE WATER-TIGHT TRUCKS OR DRAIN LOADS

ON SITE. (SECTION 2.2.7.F)

22. CONTROL PROHIBITED DISCHARGES FROM LEAVING THE CONSTRUCTION SITE, I.E., CONCRETE WASH-OUT, WASTEWATER FROM CLEANOUT OF STUCCO, PAINT AND CURING COMPOUNDS. (SECTIONS 1.5 AND 2.3.9)

23. ENSURE THAT STEEP SLOPE AREAS WHERE CONSTRUCTION ACTIVITIES ARE NOT OCCURRING ARE NOT

DISTURBED. (SECTION 2.2.10)

24. PREVENT SOIL COMPACTION IN AREAS WHERE POST-CONSTRUCTION INFILTRATION FACILITIES ARE TO BE

INSTALLED. (SECTION 2.2.12)

25. USE BMPS TO PREVENT OR MINIMIZE STORMWATER EXPOSURE TO POLLUTANTS FROM SPILLS; VEHICLE AND EQUIPMENT FUELING, MAINTENANCE, AND STORAGE; OTHER CLEANING AND MAINTENANCE ACTIVITIES; AND WASTE HANDLING ACTIVITIES. THESE POLLUTANTS INCLUDE FUEL, HYDRAULIC FLUID, AND OTHER OILS FROM VEHICLES AND MACHINERY, AS WELL AS DEBRIS, FERTILIZER, PESTICIDES AND HERBICIDES, PAINTS, SOLVENTS, CURING COMPOUNDS AND ADHESIVES FROM CONSTRUCTION OPERATIONS. (SECTIONS 2.2.15

AND 2.3)

26. PROVIDE PLANS FOR SEDIMENTATION BASINS THAT HAVE BEEN DESIGNED PER SECTION 2.2.17 AND

STAMPED BY AN OREGON PROFESSIONAL ENGINEER. (SECTION 2.2.17.A)

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

(SECTIONS 2.2.17 AND 2.2.18)

28. PROVIDE A DEWATERING PLAN FOR ACCUMULATED WATER FROM PRECIPITATION AND UNCONTAMINATED

GROUNDWATER SEEPAGE DUE TO SHALLOW EXCAVATION ACTIVITIES. (SEE SECTION 2.4)

29. IMPLEMENT THE FOLLOWING BMPS WHEN APPLICABLE: WRITTEN SPILL PREVENTION AND RESPONSE PROCEDURES, EMPLOYEE TRAINING ON SPILL PREVENTION AND PROPER DISPOSAL PROCEDURES, SPILL KITS IN ALL VEHICLES, REGULAR MAINTENANCE SCHEDULE FOR VEHICLES AND MACHINERY, MATERIAL DELIVERY AND STORAGE CONTROLS, TRAINING AND SIGNAGE, AND COVERED STORAGE AREAS FOR WASTE

AND SUPPLIES. (SECTION 2.3)

30. USE WATER, SOIL-BINDING AGENT OR OTHER DUST CONTROL TECHNIQUE AS NEEDED TO AVOID

WIND-BLOWN SOIL. (SECTION 2.2.9)

31. THE APPLICATION RATE OF FERTILIZERS USED TO REESTABLISH VEGETATION MUST FOLLOW MANUFACTURER'S RECOMMENDATIONS TO MINIMIZE NUTRIENT RELEASES TO SURFACE WATERS. EXERCISE CAUTION WHEN USING TIME-RELEASE FERTILIZERS WITHIN ANY WATERWAY RIPARIAN ZONE. (SECTION 2.3.5)

32. 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. (SECTION 1.2.9)

33. TEMPORARILY STABILIZE SOILS AT THE END OF THE SHIFT BEFORE HOLIDAYS AND WEEKENDS, IF NEEDED.

THE REGISTRANT IS RESPONSIBLE FOR ENSURING THAT SOILS ARE STABLE DURING RAIN EVENTS AT ALL

TIMES OF THE YEAR. (SECTION 2.2)

34. AS NEEDED BASED ON WEATHER CONDITIONS, AT THE END OF EACH WORKDAY SOIL STOCKPILES MUST BE STABILIZED OR COVERED, OR OTHER BMPS MUST BE IMPLEMENTED TO PREVENT DISCHARGES TO SURFACE

WATERS OR CONVEYANCE SYSTEMS LEADING TO SURFACE WATERS. (SECTION 2.2.8)

35. SEDIMENT FENCE: REMOVE TRAPPED SEDIMENT BEFORE IT REACHES ONE THIRD OF THE ABOVE GROUND

HEIGHT AND BEFORE FENCE REMOVAL. (SECTION 2.1.5.B)

36. OTHER SEDIMENT BARRIERS (SUCH AS BIOBAGS): REMOVE SEDIMENT BEFORE IT REACHES TWO INCHES

DEPTH ABOVE GROUND HEIGHT AND BEFORE BMP REMOVAL. (SECTION 2.1.5.C)

37. CATCH BASINS: CLEAN BEFORE RETENTION CAPACITY HAS BEEN REDUCED BY FIFTY PERCENT. SEDIMENT BASINS AND SEDIMENT TRAPS: REMOVE TRAPPED SEDIMENTS BEFORE DESIGN CAPACITY HAS BEEN

REDUCED BY FIFTY PERCENT AND AT COMPLETION OF PROJECT. (SECTION 2.1.5.D)

38. WITH 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.

(SECTION 2.2.19.A)

39. THE INTENTIONAL WASHING OF SEDIMENT INTO STORM SEWERS OR DRAINAGE WAYS MUST NOT OCCUR.

VACUUMING OR DRY SWEEPING AND MATERIAL PICKUP MUST BE USED TO CLEAN UP RELEASED SEDIMENTS.

(SECTION 2.2.19)

40. 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. (SECTION 6.5.F)

41. 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.

(SECTION 2.2.20)

42. DO NOT REMOVE TEMPORARY SEDIMENT CONTROL PRACTICES UNTIL PERMANENT VEGETATION OR OTHER COVER OF EXPOSED AREAS IS ESTABLISHED. ONCE CONSTRUCTION IS COMPLETE AND THE SITE IS STABILIZED, ALL TEMPORARY EROSION CONTROLS AND RETAINED SOILS MUST BE REMOVED AND DISPOSED OF PROPERLY, UNLESS NEEDED FOR LONG TERM USE FOLLOWING TERMINATION OF PERMIT COVERAGE.

(SECTION 2.2.21)

EROSION/SEDIMENT CONTROL PLAN (ESCP) NOTES:

REFER TO NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM (NPDES) STORMWATER DISCHARGE PERMIT, ISSUED BY OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY PURSUANT TO ORS 468B.050 AND SECTION 402 OF THE FEDERAL CLEAN WATER ACT.

EROSION/SEDIMENT 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 STORMWATER 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 WATERBODY.

4. PERIODS DURING WHICH

CONSTRUCTION ACTIVITIES

ARE SUSPENDED AND RUNOFF

IS UNLIKELY DUE TO FROZEN

CONDITIONS.

VISUAL MONITORING INSPECTIONS 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 DUE TO FROZEN

CONDITIONS.

VISUAL MONITORING INSPECTIONS MAY BE REDUCED TO ONCE A MONTH.

IMMEDIATELY RESUME MONITORING UPON THAWING, OR WHEN WEATHER

CONDITIONS MAKE DISCHARGES LIKELY.

AUTHORIZED NON-STORMWATER DISCHARGES:

1. WATER AND ASSOCIATED DISCHARGES FROM EMERGENCY FIREFIGHTING ACTIVITIES;

2. FIRE HYDRANT FLUSHING;

3. PROPERLY MANAGED LANDSCAPE IRRIGATION;

4. WATER USED TO WASH EQUIPMENT AND VEHICLES (EXCLUDING THE ENGINE, UNDERCARRIAGE, AND WHEELS/TIRES) PROVIDED THERE IS

NO DISCHARGE OF SOAPS, SOLVENTS, OR DETERGENTS USED;

5. WATER TO CONTROL DUST;

6. POTABLE WATER INCLUDING UNCONTAMINATED WATER LINE FLUSHINGS;

7. EXTERNAL BUILDING WASHDOWN, PROVIDED SOAPS, SOLVENTS, AND DETERGENTS ARE NOT USED, AND EXTERNAL SURFACES DO NOT

CONTAIN HAZARDOUS SUBSTANCES;

8. PAVEMENT WASH WATERS, PROVIDED SPILLS OR LEAKS OF TOXIC OR HAZARDOUS SUBSTANCES HAVE NOT OCCURRED (UNLESS ALL SPILL MATERIAL HAS BEEN REMOVED) AND WHERE SOAPS, SOLVENTS, AND DETERGENTS ARE NOT USED. DIRECTING PAVEMENT WASH WATERS INTO ANY SURFACE WATER, STORM DRAIN INLET, OR STORMWATER CONVEYANCE IS PROHIBITED, UNLESS THE CONVEYANCE IS CONNECTED TO A SEDIMENT BASIN, SEDIMENT TRAP, OR SIMILARLY EFFECTIVE CONTROL FOR THE POLLUTANTS PRESENT. PER 2.2.19.b, HOSING OF ACCUMULATED SEDIMENTS ON PAVEMENT INTO ANY STORMWATER CONVEYANCE IS PROHIBITED;

9. UNCONTAMINATED AIR CONDITIONING OR COMPRESSOR CONDENSATE;

10. UNCONTAMINATED, NON-TURBID DISCHARGES OF GROUNDWATER OR SPRING WATER;

11. FOUNDATION OR FOOTING DRAINS WHERE FLOWS ARE NOT CONTAMINATED WITH PROCESS MATERIALS SUCH AS SOLVENTS OR

CONTAMINATED GROUNDWATER; AND

12. CONSTRUCTION DEWATERING ACTIVITIES (INCLUDING GROUNDWATER DEWATERING AND WELL DRILLING DISCHARGE ASSOCIATED WITH

THE REGISTERED CONSTRUCTION ACTIVITY), PROVIDED THAT:

12.1. THE WATER IS LAND APPLIED IN A WAY THAT RESULTS IN COMPLETE INFILTRATION WITH NO POTENTIAL TO DISCHARGE TO A SURFACE WATER OF THE STATE, OR THE USE OF A SANITARY OR COMBINED SEWER DISCHARGE IS AUTHORIZED WITH LOCAL

SEWER DISTRICT APPROVAL; OR

12.2. BEST MANAGEMENT PRACTICES AND A TREATMENT SYSTEM APPROVED BY DEQ OR AGENT (SEE SECTION 1.2.9) ARE USED TO

ENSURE COMPLIANCE WITH DISCHARGE AND WATER QUALITY REQUIREMENTS IN SECTION 2.4.

POLLUTANT-GENERATING ACTIVITIES:

1. STORMWATER DISCHARGE FOR THE SITE DOES NOT REACH "WATERS OF THE STATE". POLLUTANT-GENERATING ACTIVITIES FOR THE

SITE INCLUDE CLEARING, GRUBBING, STRIPPING, EXCAVATION, BACKFILL, COMPACTION, ASPHALT PAVEMENT AND ASPHALT PAINTING.

STORAGE OF POLLUTANTS AND FUELING AND MAINTENANCE OF EQUIPMENT SHALL OCCUR IN CONTRACTORS STAGING AREA.

EC-02

EROSION CONTROL NOTES

SCALES ACCORDINGLY.

THIS SHEET, ADJUST

IF NOT ONE INCH ON

0" 1"

ORIGINAL DRAWING.

BAR IS ONE INCH ON

VERIFY SCALES

APPRBYNO. DATE REVISIONS

SHEET NO.

DRAWING NO.

DATE:

APRIL 2026

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

HANGAR AND WATERLINE

PROJECT NO: SCALE:

CHECKED BY:

DRAWN BY:

DESIGNED BY:

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AS NOTED40097.134.02

CENTURY

WEST

E N G I N E E R I N G

PORTLAND OFFICE

5500 MEADOWS ROAD

SUITE #250

LAKE OSWEGO, OR 97035

503.419.2130 OFFICE

JAK

ALB

RHH

THIS PLAN SHEET IS INTENDED TO BE VIEWED

IN COLOR. THE FOLLOWING COLORS SHOULD

BE DISTINGUISHABLE WHEN PRINTED

CORRECTLY:

RED BLUE

A.I.P. NO. 3-41-0072-019-2025

78906PE

OREGON

EXPIRES: 6/30/27

SEPT 11 , 2012

RYAN HA JIME HA LVORSO

N

ENGINEER

RE

GIS

TERED PROFESSIONAL

DIGITALLY SIGNED

ELECTRONIC DOCUMENT AVAILABLE UPON REQUEST

BID SET

CONTRACTOR TO PROTECT CONSTRUCTION AREA AND

PROVIDE NOXIOUS WEED CONTROL AS NECESSARY

NARRATIVE:

PART I

1. PERMIT REGISTRATION INFORMATION

1.1. DATE: SEPTEMBER 2026

1.2. PROJECT NAME: MULINO STATE AIRPORT HANGAR AND WATERLINE

PROJECT

1.3. COMPANY NAME: OREGON DEPARTMENT OF AVIATION

1.4. EMAIL: ANTHONY.BEACH@ODAV.OREGON.GOV

1.5. PREPARED BY: SEE TITLE BLOCK INFORMATION

2. OREGON PROFESSIONAL CERTIFICATION INFORMATION

2.1. THIS PROJECT DOES COVER LESS THAN 20 ACRES.

2.2. THIS PROJECT DOES NOT REQUIRE ENGINEERED FACILITIES.

2.3. THE ESCP HAS BEEN PREPARED AND STAMPED BY AN OREGON

REGISTERED PROFESSIONAL ENGINEER,

RYAN HALVORSON, PE

5500 MEADOWS ROAD, SUITE 250, LAKE OSWEGO, OR 97035

503-419-2130, RHALVORSON@CENTURYWEST.COM

3. INSPECTOR QUALIFICATION INFORMATION

3.1. ELIZABETH WILSON, PE

5500 MEADOWS RD, SUITE 250, LAKE OSWEGO, OR 97035

503-419-2130, EWILSON@CENTURYWEST.COM

4. NARRATIVE SITE DESCRIPTION

4.1. THE MULINO STATE AIRPORT HANGAR AND WATERLINE PROJECT WILL

CONSTRUCT AN EXTENSION OF THE EAST HANGAR AND TAXILANE. A

STORM DETENTION POND WILL BE CONSTRUCTED TO ACCOUNT FOR

THE LOSS OF PERVIOUS SURFACE AND MINIMIZE RUNOFF ON THE

SITE.

4.2. NEW PAVEMENT SECTIONS WILL CONSIST OF ASPHALT AND

AGGREGATE IMPORTED FROM LOCAL QUARRIES. ONSITE SOILS WILL

BE UTILIZED FOR EARTH FILL. GEOTECHNICAL REPORT DESCRIBES

SOILS AS VARIABLE COMBINATIONS OF SANDY LOAM, SANDY SILT,

SILTY SAND, CLAY, SILT AND SAND SILT ACROSS SITE. NRCS ASSIGNS

THESE SOILS A MODERATE HIGH TO HIGH ERODIBILITY.

5. TMDL AND 303(D) LISTING

5.1. NEAREST WATERBODY DOES NOT HAVE TMDL OR 303(d)

REQUIREMENTS.

6. NATURAL BUFFER ZONE

6.1. NO WATERS OF THE STATE EXIST WITHIN THE PROJECT SITE OR

WITHIN 50 FEET OF THE SITE.

7. ENGINEERED SOILS

7.1. ENGINEERED SOILS ARE NOT USED ON SITE.

SPILL PROCEDURES:

1. IF MEDICAL EMERGENCY AND/OR ADDITIONAL ASSISTANCE IS REQUIRED,

CALL 911.

2. AVOID CONTACT AND MOVE AWAY OR UPWIND FORM THE SPILL IF UNSURE

IF SAFE.

3. KEEP NON-EMERGENCY INDIVIDUALS OUT OF AREA.

4. CONTROL AND CONTAIN THE SPILL.

5. CLEAN UP WHAT YOU CAN.

6. REPORT THE SPILL TO OREGON EMERGENCY RESPONSE SYSTEM

(1-800-452-0311) IF:

6.1. OIL REACHES A WATER OF THE STATE

6.2. LAND OIL SPILLS GREATER THAN 42 GALLONS

6.3. REPORTABLE QUANTITIES AND HAZARDOUS MATERIALS PER 40 CFR

PART 302.

7. APPROPRIATELY DISPOSE OF CLEANUP MATERIALS.

8. REFER TO EPA'S EMERGENCY RESPONSE WEBSITE TO DETERMINE IF

REPORTABLE AND CALL 1-800-424-8802 IF REQUIRED.

9. CONTINUE LONG TERM CLEANUP.

10. COMPLETE AND SUBMIT SPILL RELEASE REPORT…