APPROVED PLN RESUB4 BLD2023-0640+LANDSCAPE_PLAN_NEW+6.24.2024_3.36.22_PM+4340392FLAN LEOE I VD
— - - - - — PROPERTY LINE
— — — — — — — 50' TOP OF BLUFF BUFFER
100% JAPANESE KNOTWEED
HIMALAYAN BLAGKBERRY
100% HIMALAYAN BLAGKBERRY
100% GHERRY LAUREL
100% JAPANESE KNOTWEED
r r r r cis% HIMALAYAN BLAGKBERRY,
ENCLISH IVY, HERB ROBERT,
GHERRY LAUREL; 5% BIOLEAF
MAPLE, BITTER GHERRY,
THIMBLEBERRY, AND
SALMONBERRY (UNDERSTORY
ONLY)
50% HIMALAYAN BLAGKBERRY,
EN6L I SH IVY, JAPANESE
KNOTWEED, THISTLE; 50% RED
ALDER, BICLEAF MAPLE,
SALMONBERRY, THIMBLEBERRY,
SNOWBERRY, AND BITTER GHERRY
(UNDERSTORY ONLY)
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APPROVED BYPLANNING�-------------
C Reviewed by
Jun 252024 City of Edmonds ;
Planning Division
--------------
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--- ---PROPERTY LINE
— — — — — — —TOP OF BLUFF (50' BUFFER FROM TOP OF SLOPE)
- - EDC E OF LANDSL I DE HAZARD AREA
RESTORATION AREA - 3,54ci SF
LANDSGAPE AREA - 1,351 SF
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FLANT L I Si (SEE FIGURE 4 FOR SGHEDULE)
TREES
KEY SCIENTIFIC NAME COMMON NAME
AG AGER G I RG I NATUM VINE MAPLE
GG GORYLUS GORNUTA WESTERN HAZELNUT
PG PILAUS GONTORA SHORE PINE
TP THUJA PLIGATA 'EXGELSA' EXGELSA CEDAR
SHRUBS
KEY
SCIENTIFIC NAME
COMMON NAME
AA
AMELANGHIER ALNIFOLIA
SERVIGEBERRY
HD
HOLODISGU5 DI5GOLOR
OGEANSPRAY
MA
MAHONIA AOUIFOLIUM
TALL ORECON-CRAPE
M
MAHONIA AOUIFOLIUM 'GOMPACTA'
COMPACT ORECON CRAPE
RS
RIBES SANCUINEUM
RED CURRANT
C
ROSA GYMNOGARPA
BALDHIP ROSE
R
ROSA NUTKANA
NOOTKA ROSE
5
5YMPHORIGARPOS ALBU5
SNOWBERRY
V
VAGGINIUM OVATUM
EVERGREEN HUGKLEBERRY
OROUNDGOVER
KEY
SCIENTIFIC NAME
COMMON NAME
CAULTHERIA SHALLON
5ALAL
POLY5TIGHUM MUNITUM
SWORDFERN
ORAPHIG SCALE
(IN FEET)
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TREES
KEY SG I ENTI F I G NAME
COMMON NAME
SPAG I NC
G2TY.
SIZE (MIN.)
NOTES
AG AGER GIRGINATUM
VINE MAPLE
10, O.G.
2
2 CAL.
MULTI -STEM (3 MIN.)
GG GORYLUS GORNUTA
WESTERN HAZELNUT
10, O.G.
2
2 CAL.
FULL � BUSHY
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FULL � BUSHY
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cl
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SINGLE TRUNK
SHRUBS
KEY SG I ENTI F I C NAME
COMMON NAME
SPAG I NC
G2TY.
SIZE (MIN.)
NOTES
AA
AMELANGHIER ALNIFOLIA
HD
HOLOD I SGUS D I SGOLOR
MA
MAHONIA AOUIFOLIUM
M
MAHONIA AOUIFOLIUM 'GOMPAGTA'
RS
RIBES SANGUINEUM
G
ROSA GYMNOGARPA
R
ROSA NUTKANA
S
SYMPHORIGARPOS ALBUS
V
VAGGINIUM OVATUM
OROUNDGOVER
KEY
SGIENTIFIG NAME
U CAULTHERIA SHALLON
POLYSTIGHUM MUNITUM
MULCH
APPLIEI
SPEC FI
ROOT BALL DIAMETER
SERVIGEBERRY
5' O.G.
15
1 CAL.
MULTI
-STEM (3 MIN.)
OGEANSPRAY
5' O.G.
13
1 CAL.
MULTI
-STEM (3 MIN.)
TALL ORECON-CRAPE
5' O.G.
14
1 CAL.
MULTI
-STEM (3 MIN.)
GOMPAGT OREGON CRAPE
3' O.G.
0
1 CAL.
FULL
� BUSHY
RED GURRANT
5' O.G.
12
1 CAL.
MULTI
-STEM (3 MIN.)
BALDHIP ROSE
3' O.G.
15
1 CAL.
MULTI
-STEM (3 MIN.)
NOOTKA ROSE
3' O.G.
17
1 CAL.
MULTI
-STEM (3 MIN.)
SNOWBERRY
3' O.G.
24
1 CAL.
MULTI
-STEM (3 MIN.)
EVERGREEN HUCKLEBERRY
3' O.G.
15
1 CAL.
FULL
� BUSHY
SALAL 2' O.G
SWOROFERN 3' O.0
GTY. SIZE (MIN
160 1 GAL.
160 1 GAL,
INSTALL PLANTS 3" HIGH AND MULCH PERIMETER
ENSURING NO MULCH OVER PLANT GROWN
SET TREE/SHRUB STRAIGHT AND PLACE ROOTBALL
ON SOLID GROUND OR ON COMPACTED BAGKFILL.
BAGKFILL PLANTING HOLE 1/2 FULL WITH
NATIVE SOIL, TAMP SOIL TO STABILIZE
ROOTBALL. DO NOT DISTURB ROOTBALL.
BAGKFILL REMAINING PLANTING HOLE PER
SPECIFICATIONS. AMEND BAGKFILL AS NOTED
IN THE INSTALLATION NOTES.
FINAL GRADE.
SCARIFY SIDES OF PLANTING HOLE. MAKE SURE
HOLE HAS 600D DRAINAGE.
EXISTING NATIVE SOIL.
ER TREE/SHRUB
Fl-AN7I N,C (71 f=
FULL � BUSHY
FULL � BUSHY
PREVAILING HINDS
B8B OR BAREROOT TREE5
2"-3" MULCH (AS SPECIFIED)
DEPTH SET ALL PLANTS PLUMB
TAPERED AT
TRUNK
SEE NOTE 4
`
SEE NOTE 6
2"-3" MULCH DEPTH
TAPERED AT TRUNK
SEE
FIG
BAGKFILL PER SPEC ON URE 4
JUTE FABRIG
Z1:1
A
MAX. ,;..
NOTES:
I. AMEND SOILS PER GEOTEGHNIGAL
ENGINEER'S REGOMMENDATION5, THEN MULCH �j .; "•
AND APPLY JUTE PER 5PGIFIGATION5 ON -
FIGURE 4.
2. STAKE TREES IMMEDIATELY AFTER PLANTING
3. ONE STAKE PER TREE ON HINDHARD SIDE;
SECOND STAKE ON LEEWARD 51DE
4. GHAINLOGK TREE TIE. LOOP EACH TIE
AROUND
TREE LOOSELY TO PROVIDE I" SLACK FOR
DIAMETER GROWTH.
5. SHAPE 501L 3' DIAMETER OR ROOTBALL
DIAMETER, HHIGHEVER 15 GREATER, TO
PROVIDE WATERING RING.
6. REMOVE ALL HIRE AND STRING. REMOVE TOP
2/3 OF BURLAP.
NC
BdB OR GONTAINERIZED
SHRUB (TT f )
SET ROOTGROHN AT OR
JUST ABOVE 501L LEVEL
(TYP)
SEE NOTE b
EXISTING GRADE (SEE
GRADING PLAN) I:IEVCC
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2"1 HEMLOGK/FIR STAKES,
LOCATED OUTSIDE OF ROOTBALL.
FASTEN w/GHAINLOGK TIES.
STAKE WITH NO EXPOSED WIRE
ENDS. NEITHER STAKE OR WIRE
MAY TOUGH TREE TRUNK. STAKE
HEIGHT MUST BE AT LEAST 5'
FROM FINISHED GRADE.
PLACE 2" OF BARK MULCH IN
SAUCER UP TO TOP OF ROOT
BALL.
REMOVE CONTAINER OR
COMPLETELY REMOTE BURLAP
AND ALL TWINE FROM
ROOTBALL PRIOR TO
PLACEMENT IN PLANTING PIT.
FORM TEMPORARY 5" HT. WATER DAM
AROUND TREE WITH SOIL TO HOLD WATER.
REMOVE WITH FINE GRADE (TYP)
W
Q
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HOLE. MAKE SURE HOLE HAS
GOOD DRAINAGE. T
=i
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NEWLY PLACED TOPSOIL.
1
1
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SET TREE STRAIGHT AND PLACE
ROOTBALL ON SOLID GROUND
OR ON COMPACTED BAGKFILL.
BAGKFILL PLANTING HOLE 1/2
FULL WITH NATIVE SOIL, TAMP
0 SOIL TO STABILIZE
did ROOTBALL. GUT AWAY WIRE,
STRING, AND BURLAP.
0 0 boo d BAGKFILL REMAINING
PLANTING HOLE PER
SPECIFICATIONS. AMEND
BAGKFILL AS NOTED IN THE
INSTALLATION NOTES.
ROOT BALL DIAMETER
545 7REE FLAN71 N (71
SGALE: NTS
TREES
KEY SG I ENT I F I G NAME COMMON NAME SPAG I NO G2TY. SIZE (MIN.) NOTES
A AGER PALMATUM 'BLOODOOOD' BLOODOOOD JAPANESE MAPLE AS SHOWN 5 7-8' HT. MULTI —STEM (3 MIN.)
SHRUBS
KEY SG I ENT I F I G NAME COMMON NAME SPAG I NO 07'r. SIZE (MIN.) NOTES
MM M I SGANTHUS 5I NEN515 'MORN I NO L I OHT' MORN I NO L I OHT MAIDEN GRASS 4' O.G. 17 2 GAL. MULTI —STEM (3 MIN.)
GROUNDGOVER
KEY COMMON NAME OTY.
SHADE FESCUE SEED MIX 10#/1000 SF
MULCH
ORAPHIG SCALE
(IN FEET)
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SFEC I F I CATI ONS
2.
3.
4.
5.
6.
-7.
8.
Cf.
10
II.
12
IN JULY THROUGH SEPTEMBER, ALL HIMALAYAN AND EVERGREEN BLACKBERRY (AND OTHER INVASIVE WOODY VEGETATION) SHALL BE GUT TO 4" HEIGHT AND IMMEDIATELY (HITHIN A FEW MINUTES)
TREATED WITH 100% OLYFH05ATE VIA A DROPPER BOTTLE TO GUT ENDS WITHIN THE BLACKBERRY INFESTED AREA - LOCATION IS DEPIGTED AS APPROXIMATE ON FIGURE I. GUT GANES TO BE GUT TO
0" MAX. PIEGES TO DECOMPOSE ON THE SLOPE. JAPANESE KNOTHEED TO BE STEM INJECTED IN LATE JULY PER KING GOUNTY STANDARDS. WORKERS SHALL TIE OFF FROM EXISTING TREES PRIOR TO
WORKING ON THE SLOPE IN EVENT OF FALLING.
IF POSSIBLE, ALL PLANTS SHOULD BE INSTALLED IN OGTOBER TO MINIMIZE POTENTIAL EROSION ON THE HILLSIDE.
IN ALL GRADED AREAS, OVER-EXGAVATE cf" FOR PLACEMENT OF b" OF IMPORTED 3-WAY TOPSOIL - TOPSOILS NH PREMIUM BLEND - LIGHTLY MIX INTO TOP FEW INGHES OF SUBGRADE SOIL PRIOR TO
PLANTING.
ALL PLANTS SHALL BE PIT -PLANTED IN PLANTING PITS EXCAVATED 2X THE DIAMETER OF THE PLANT. PITS SHALL BE BAGKFILLED WITH A 30/70 MIX OF STEERGO TO NATIVE SOIL. PLANTS SHALL BE
INSTALLED 3" HIGH AND SURFAGED MULCHED TO A DEPTH OF 3" WITH HOG -FUEL PLACED WITHIN A 24" DIAMETER AROUND EACH PLANT FOR PLANTING AMONGST EXISTING VEGETATION. FOR PLANTING
IN COMPLETELY BARE AREAS, MULCH CONTINUOUSLY THROUGHOUT BED TO A DEPTH OF 3 INGHES. IN LANDSCAPED AREAS, AND ALONG EAST SIDE OF ROAD, USE DARK HOOD MULCH FROM PAGIFIG
TOPSOILS. SINGLE STAKE MITIGATION TREES WITH A BIODEGRADABLE BAMBOO STAKE AND BIODEGRADABLE TAPE. INSTALL LANDSCAPE TREES PER B4B TREE PLANTING DETAIL - SEE FIGURE 5.
LAWN AREA SHALL BE HAND SEEDED AT A RATE OF 10#/1000 SF AND WATERED ON A SEPARATE ZONE FROM PLANTING BEDS.
ALL PLANTS SHALL BE NURSERY GROWN (IN H. HA OR OR.) FOR AT LEAST I YEAR FROM PURCHASE DATE, FREE FROM DISEASE OR PESTS, WELL -ROOTED, BUT NOT ROOT -BOUND AND TRUE TO SPEGIES.
UPON COMPLETION OF PLANTING, ALL PLANTS SHALL BE THOROUGHLY WATERED.
UPON APPROVAL OF PLANTING INSTALLATION BY AOA, THE GITY OF EDMONDS HILL BE NOTIFIED TO GONDUGT A SITE REVIEW FOR FINAL APPROVAL OF GONSTRUGTION OF THE MITIGATION.
ALL PLANTS SHALL BE HATERED VIA A TEMPORARY DRIP IRRIGATION SYSTEM FOR THE MITIGATION AREA AND A PERMANENT LOH FLOW SPRAY SYSTEM FOR THE LANDSCAPED AREAS DESIGNED BY
THE LANDSCAPE GONTRAGTOR. WATERING SHOULD OGGUR THIGE-WEEKLY JUNE 15-OGTOBER 15 THE FIRST YEAR AFTER PLANTING AND ONCE WEEKLY JULY 1-5EPTEMBER 30 THE SECOND YEAR AFTER
PLANTING. FLOW SHOULD OGGUR AT A RATE OF I/2" OF HATER DURING EACH WATERING EVENT, ENSURING COMPLETE SATURATION OF THE ROOT ZONE.
MAINTENANCE AND MONITORING SHALL BE PERFORMED UPON GONSTRUGTION COMPLETION FOR A PERIOD OF AT LEAST 5 YEARS (UNLESS EARLY SIGN -OFF IS GRANTED BY THE CITY) - SEE FIGURE -7.
MAINTENANCE SHALL BE IMPLEMENTED ON A REGULAR BASIS AGGORDING TO THE SCHEDULE BELOW.
AN AS -BUILT PLAN MUST BE SUBMITTED FOR GITY REVIEH AND AGGEPTANGE PRIOR TO GOMMENGEMENT OF THE REQUIRED 5 YEAR MAINTENANCE AND MONITORING PERIOD.
ANNUAL MAINTENANGE 5GHEDULE
MAINTENANGE ITEM
J
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A
M
J
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WEED CONTROL
I
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OENERAL MA I NT.
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WATERINO - YEAR 1
4
8
8
8
4
WATERINO - YEAR 2
4
4
4
I-8 = NUMBER OF TIMES TASK SHALL BE PERFORMED PER MONTH.
&ROUNDGOVER PLANT
SEE PLANT L15T
5" DEPTH
BARK MULGH
NO MULCH ON PLANT GROWN
TOP501L DEPTH AND
TYPE A5 5PEGIRED
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Jun 25 20'
CITY OF EDMONI
DEVELOPMENT SER'
DEPARTMENT
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MAINTENANCE $ M0NIT0FR,IN0 FLAN - APPLIES TO MITIGATION AREA ONLY, EXGLUDES LANDSGAPED AREAS
CONSTRUCTION MANAGEMENT
I. Prior to commencement of any work in the steep slope, the clearing limits will be staked and all existing vegetation to be saved will be clearly marked. A pre -installation meeting will be held at
the site to review and discuss all aspects of the project with the owner, aoa, the geotechnical engineer and the civil engineer.
2. A biologist will supervise plan implementation during construction to ensure that objectives and specifications of the steep slope buffer restoration plan are met.
3. Any necessary significant modifications to the design that occur as a result of unforeseen site conditions will be jointly approved by the City of Edmonds and the biologist prior to their
implementation.
MONITORING METHODOLOGY
I. The monitoring program will be conducted twice yearly (in the beginning and end of the growing season) for a period of five years, with reports submitted annually (at the end of the growing
season) to the City of Edmonds.
2. Vegetotion establishment within the steep slope buffer restoration areas will be monitored during each field visit with a record kept of all plant species found.
3. Photo -points will be established from which photographs will be taken throughout the monitoring period. These photographs will document general appearance and progress in plant community
establishment in the restoration areas. Review of the photos over time will provide a semi -quantitative representation of success of the restoration plan.
PERFORMANCE STANDARDS
Success of plant establishment within the steep slope and buffer area will be evaluated on the basis of percent survival of planted species.
I. Native woody cover will be a minimum of; 10% at construction completion, 15% at year I, 20% at year 2, 30% at year 3 and 60% at year 5.
2. There will be 100% survival of all woody planted species throughout the mitigation planted area at the end of the first year of planting. For years 2-5, success will be based on an 85% survival
rate or similar number of recolonized native woody plants.
3. Exotic and invasive plant species will be maintained at levels below 10% total cover. Removal of these species will occur immediately following the monitoring event in which they surpass the
above maximum coverage. Removal will occur by hand whenever possible.
MAINTENANCE (M) $ GONTINGENGY (G)
I. Established performance standards for the project will be compared to the monitoring results in order to judge the success of the restoration project.
2. Gontingency will include many of the items listed below and would be implemented if these performance standards are not met.
3. Maintenance and remedial action on the site will be implemented immediately upon completion of the monitoring event, (unless otherwise specifically indicated below).
- replace dead plants with the some species or a substitute species that meet the goal of the enhancement plan (G)
- re -plant areas after reason for failure has been identified (e.g., moisture regime, poor plant stock, disease, shade/sun conditions, wildlife damage, etc.) (G)
- irrigate following plant installation for five years (M)
PERFORMANCE BOND
1. A performance bond or other surety device will be posted with the City of Edmonds by the applicant to cover the costs of steep slope buffer restoration plan implementation (including labor,
materials, maintenance, and monitoring).
2. The bond or ossignment may be released in partial amounts in proportion to work successfully completed over the five year monitoring period, as the applicant demonstrates performance and
corrective measures.
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CITY OF EDMONI
DEVELOPMENT SER'
DEPARTMENT
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