BLD2023-0562_WETLAND REPORT 04-09-2024_23_47_28_2024.04.09_Final_6831_Baseline (3)Altmann Oliver Associates, LLC AOA
PO Box 578 Carnation, WA 98014 Office (425) 3334535 Fax (425) 333-4509
April 9, 2024
Environmental
Planning &
Landscape
Architecture
AOA-6831
City of Edmonds Planning Department
121 5th Ave N
Edmonds, WA 98020
REFERENCE Heims Property — 9815 Cherry St - Parcel #00475600000400
SUBJECT: Baseline Monitoring Report & As -built Plan
To whom it may concern,
This report documents baseline conditions for the approved Impacts and Mitigation Plan
revised 3-18-24, Sheets 1-5 following plan implementation. The attached As -built Impacts
and Mitigation Plan depicts as -built conditions along with the location of the planting
areas, woody cover monitoring transect, and photo -points to be used during the 5-year
monitoring period. Baseline monitoring was conducted on 4-1-24.
1.0 PROJECT SUMMARY
The project consists of an expansion of the existing residence. Mitigation was required
due to the proximity of the house to Fruitdale Creek (Type F Fish and Wildlife Habitat
Conservation Area - 75-foot buffer).
Impacts associated with the expansion included 168 sf of addition, 84 sf of deck, and 31 sf
of new path and steps for a total of 283 sf of impacts. Mitigation for these impacts
included 1,083 sf of stream buffer mitigation (3:1 Impact ratio).
2.0 VEGETATION SAMPLING DATA
The mitigation area is divided into 5 sections (Areas 1-5) as seen on the attached As -built
plan. During monitoring events woody vegetation coverage is measured through use of
point -intercept sampling methodology within the established 54-foot transect intersecting
Areas 1 (calculated at 15-feet) and 2 (calculated at 35-feet) while visually estimated in the
remaining areas. Survival will be measured by counting live plants and deducting them
from the total installed for each area. Ornamental trees and shrubs existing within the
mitigation areas are not counted toward woody cover or survival totals. Herbaceous and
invasive cover are visually estimated for each area. Following is the monitoring data from
the baseline assessment on 4-1-24.
April 9, 2024
Page 2 of 6
2.1 SAMPLING DATA
Area #
% Woody
Cover
% Herbaceous
Cover
% Survival
% Invasive Cover
1
27.2
0
100
0
2
16.2
0
100
0
3
10
0
100
0
4
10
0
100
0
5
10
0
100
0
Average
14.7
0
100
0
Required
N/A
N/A
100
<10
2.2 SURVIVAL DATA
2.2A Area 1
Woody cover was 27.2% along the transect (15' long). There was no herbaceous or
invasive cover present.
Area 1 at baseline contained 29 woody plants. Baseline quantities are noted in brackets
and used to calculate survival throughout the monitoring period. Ornamental trees and
shrubs are not included in plant totals or assessed as woody cover.
[1] western hazelnut (Cory/us cornuta)
[4] salal (Gaultheria shallop)
[3] sword fern (Polystichum munitum)
[5] baldhip rose (Rosa gymnocarpa)
[4] snowberry (Symphoricarpos albus)
[5] evergreen huckleberry (Vaccinium ovatum)
[7] coast strawberry (Fragaria chiloensis)
2.213 Area 2
Woody cover was 16.2% along the transect (35' long). There was no herbaceous or
invasive cover present.
Area 2 at baseline contained 121 woody plants.
[1] vine maple (Acer circinatum)
[1] western red cedar (Thuja plicata)
[5] red -osier dogwood (Corpus sericea)
[6] salal (Gaultheria shallon)
[3] low Oregon grape (Mahonia nervosa)
[3] Pacific ninebark (Physocarpus capitatus)
[3] sword fern (Polystichum munitum)
[2] red currant (gibes sanguineum)
[13] baldhip rose (Rosa gymnocarpa)
[2] snowberry (Symphoricarpos occidentalis)
[7] evergreen huckleberry (Vaccinium ovatum)
[75] coast strawberry (Fragaria chiloensis)
2.2C Area 3
Woody cover was approximately 10 percent. There was no herbaceous or invasive cover
present.
April 9, 2024
Page 3 of 6
Area 3 at baseline contained 9 woody plants.
[1] Douglas fir (Pseudotsuga menziesh)
[2] low Oregon grape (Mahonia nervosa)
[3] Pacific ninebark (Physocarpus capitatus)
[3] coast strawberry (Fragaria chiloensis)
2.21) Area 4
Woody cover was approximately 10 percent. There was no herbaceous or invasive cover
present.
Area 4 at baseline contained 4 woody plants.
[1] western red cedar (Thuja plicata)
[3] sword fern (Polystichum munitum)
2.2E Area 5
Woody cover was approximately 10 percent. There was no herbaceous or invasive cover
present.
Area 5 at baseline contained 9 woody plants.
[1] vine maple (Acer circinatum)
[1] Douglas fir (Pseudotsuga menziesii)
[4] salal (Gaultheria shallon)
[3] low Oregon grape (Mahonia nervosa)
3.0 MAINTENANCE PLAN
Maintenance will be conducted on a routine, year-round basis. Additional maintenance
needs will be identified and addressed following the yearly maintenance review.
Contingency measures and remedial action on the site will be implemented on an as -
needed basis.
4.0 MONITORING PROGRAM
4.1 MONITORING REPORTS
The city of Edmonds requires a 5-year maintenance and monitoring period for this
project with annual reports submitted in the spring of each year through 2029.
Success of the mitigation project is based on the approved performance standards below.
If, at the time during monitoring, a performance standard is not met, then the
contingency plan for that item will be followed to improve performance.
4.2 GOAL, OBJECTIVES, AND PERFORMANCE STANDARDS
The primary goal of the mitigation plan is to increase the habitat function of the
enhanced buffer. To meet this goal, the following objectives and performance standards
have been incorporated into the design of the plan:
4.3A Objective A: Increase the structural and plant species diversity within the mitigation
area.
4.313 Performance Standard 1: There will be 100% survival of all woody planted species
throughout the mitigation area at the end of the first year of planting. For Years 2-5,
April 9, 2024
Page 4 of 6
success will be based on an 80% survival rate or similar number of recolonized native
woody plants. Areal coverage of plantings or native re -colonized woody species will be
at least 15% at Year 1, 25% at Year 2, 30% at Year 3, 40% at Year 4, and 50% at Year
5.
Current Status. At the time of the baseline monitoring assessment, woody cover averaged
14.7 between the 5 areas. Survival was 1001yo because the site was recently planted, thus
this performance standard is being met for baseline.
4.4A Objective B: Limit the amount of invasive and exotic species within the mitigation
area.
4.413 Performance Standard 2: After construction and following every monitoring event
for a period of five years, exotic and invasive plant species will be maintained at levels
below 10% total cover in all planted areas.
Current Status. At the time of the baseline monitoring assessment, there were no invasive
species present within the mitigation areas, thus meeting this performance standard for
baseline.
5.0 PHOTOS FROM ESTABLISHED PHOTO -POINT LOCATIONS
During the baseline monitoring event six photo -points were established to be monitored
throughout the five-year performance monitoring period. The photos, whose locations
are depicted on the attached as -built plan, are taken throughout the monitoring period to
document the general appearance and progress in plant community establishment.
Review of the photos over time provides a semi -quantitative representation of success of
the planting plan. Following are the photos taken during the baseline review 4-1-24.
Photo -point 1. View looking SE.
Photo -point 2. View looking SW.
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6.0 MAINTENANCE RECOMMENDATIONS
The following items need to be completed in March, May, July, and October.
1. Remove all invasive/non-native vegetation as it sprouts through hand -grubbing.
2. Irrigate the plantings throughout the dry season. Flow should be supplying'/z"
twice -weekly throughout June 15th through October 15th. Winterize by October
315Y.
7.0 SUMMARY & MONITORING SCHEDULE
Overall, the site is functioning well and meeting performance standards at baseline. With
proper on -going maintenance, the site should continue to establish successfully. The next
long-term monitoring event is scheduled for the Year 1 monitoring assessment in the
spring of 2025.
We are happy to schedule a compliance review with you. Should you have any questions,
please email me at dainPaltoliver.com. We would like written approval of this report
and confirmation of monitoring cycle commencement.
Sincerely,
ALTMANN OLIVER ASSOCIATES, LLC
Dain Altmann
Wetland Biologist
Attachments: Figures 1-2. As -Built Impacts and Mitigation Plan
cc: Tracy Heims and Simone Oliver- via email
AREA I / ., ti m
AS-SU I LT PLAN LEOEND a n "I
(E) GONGRETE — - - — PROPERTY L I NE
PATH �
— — — STREAM/PONDS ORDINARY HIGH WATER L N
STREAM OHW STANDARD 75' STREAM BUFFER O I A
75' STANDARD BUFFER (P) NEW PATH W z
18.75 REDUGED BUFFER AND STEPS — — ——18.75' MINIMUM BUFFER (25%) A O u A
\` TRANSEGT LOCATION
I �
PP-# PHOTO -POINT LOCATIONS
1 MIGT LEOEND
\ (E) ;' (P) 4'X21' DECK E,'X21' HOUSE ADDITION 160 SF z
WEEPING (P) 8X21 ° 1 °° °°° °°° °°° °°°° °° ° ° °°°° 4'X21 DECK 84 SF <
Ii PMT °°°°°°°°°
\ AREA 3 `°\ BIRCH ADDITION r PATH AND STEPS 31 SF p
TOTAL IMPACT 205 SF z O
\ \ PP �j� `�, O O
v - MITIOATION LEOEND
iuo❑ �� \ '� AREA 2 ° MITIGATION (3:1 FOR 1,083
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ORAPHIG SGALE
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-75 STANDARD BUFFER \
18.75 REDUGED BUFFER
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NOTES d
I . BASE INFORMATION PROVIDED BY SITE o
SURVEYINO, ING., 21ci23 NE IITH STREET, o
SAMMAMISH, WA 00074, 425.2ci8.4412.
AS-5U I LT FLANT LIST
TREES
SG I ENTI F I G NAME
COMMON NAME
G2TY.
AGER G I RG I NATUM
VINE MAPLE
2
CORYLUS GORNUTA
WESTERN HAZELNUT
I
PSEUDOTSUOA MENZ I ES I I
DOUOLAS FIR
2
THUJA PLIGATA
WESTERN RED CEDAR
2
SHRU5S
SG I ENTI F I G NAME
COMMON NAME
OTY.
GORNUS SERIGEA
RED -OSIER DOOWOOD
5
GAULTHERIA SHALLON
SALAL
14
MAHONIA NERVOSA
LOW OREOON GRAPE
8
PHYSOGARPUS GAP I TATUS
PAG I F I G N I NEBARK
6
POLYSTIGHUM MUNITUM
SWORD FERN
q
RI BES SANOU I NEUM
RED GURRANT
2
ROSA GYMNOCARPA
BALDHIP ROSE
18
SYMPHORIGARPOS ALBUS
SNOWBERRY
6
VAGGINIUM OVATUM
EVERGREEN HUGKLEBERRY
12
OROUNDGOVER
SG I ENTI F I G NAME
COMMON NAME
OTY.
FRAGARIA GHILOENSIS
GOAST STRAWBERRY
85
MAINTENANGE $ MON I TOR I NO FLAN
2
9
m
ALL PLANTINGS SHALL BE IRRIGATED OR HAND WATERED AT A RATE OF y2" OF FLOW 2-3 TIMES
WEEKLY, FROM JUNE 15-OGT 31 THE FIRST YEAR AFTER PLANTI NC . THE SECOND YEAR, FLOW SHOULD
BE REDUCED TO PROVIDE /2" OF FLOW 1-2 TIMES WEEKLY FROM -JULY I-OGT 15. THE SYSTEM GAN BE
REMOVED AT THE END OF THE 3-YEAR MONITORING PERIOD.
PERFORMANGE STANDARDS I NGLUDE: I) YEAR I - THERE WILL BE 100% SURVIVAL OF ALL PLANTED
SPECIES. FOLLOW I NO YEARS 2-5, THERE WILL BE 80% SURVIVAL RATE OF ALL PLANTED SPEGIES
OR EQUIVALENT REPLAGEMENT OF A COMBINATION OF PLANTED AND RE -COLONIZED NATIVE
SPEGIES. 2) FOLLOWINO THE FIRST YEAR AFTER PLANTING, A COMBINATION OF NATIVE OR
NATURALIZED WOODY VEOETATION WILL COVER AT LEAST 15% OF THE MITIGATION AREA. THE
AERIAL GOVERAOE WILL INCREASE TO AT LEAST 25% FOLLOWINO THE SECOND YEAR AFTER
PLANTING, 30% FOLLOWINO THE THIRD YEAR AFTER PLANTING, 40% FOLLOWING THE FOURTH YEAR
AFTER PLANTING AND 50% FOLLOWINO THE FIFTH YEAR AFTER PLANTING. 3) AFTER GONSTRUGTION
AND FOLLOWINO EVERY MONITORING EVENT FOR A PERIOD OF AT LEAST FIVE YEARS, EXOTIC AND
INVASIVE PLANT SPEGIES WILL BE MAINTAINED AT LEVELS BELOW 10% TOTAL GOVERAOE IN ALL
PLANTED AREAS. THESE SPEGIES INCLUDE BUT ARE NOT LIMITED TO; HIMALAYAN AND EVERGREEN
BLAGKBERRY, REED GANARYORASS, MORNING GLORY, JAPANESE KNOTWEED, ENOL I SH IVY, THISTLE,
PERIWINKLE, AND GREEPING NIOHTSHADE.
ANNUAL MON I TORI NO REPORTS WILL BE PREPARED AND SUBMITTED TO G I TY OF EDMONDS EACH OF
THE FIVE YEARS OF THE MONITORING PERIOD. THE REPORTS WILL DETAIL IF THE SITE IS MEETING
THE PERFORMANGE STANDARDS AND PROVIDE PHOTOS FROM ESTABLISHED PHOTO POINTS.
UPON APPROVAL OF PLANTINO INSTALLATION BY AOA, CITY OF EDMONDS WILL BE NOTIFIED TO
GONDUGT A SITE REVIEW FOR FINAL APPROVAL OF GONSTRUGTION.
MAINTENANGE SHALL BE IMPLEMENTED IN MARCH, MAY, JULY AND OGTOBER FOR THE DURATION OF
THE MONITORING PERIOD AGGORDINO TO THE SGHEDULE BELOW.
f�►1►111��u1�I�►i���I�� '�1'.i 1IRA
MAINTENANGE ITEM
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A
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A
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N
D
WEED CONTROL
I
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GENERAL MAINT.
I
I
I
I
WATERING -(EAR 1
4
0
8
8
4
WATERING - YEAR 2
4
4
4
I-8 = NUMBER OF TIMES TASK SHALL BE PERFORMED PER MONTH.
MAINTENANGE WILL INCLUDE:
I. REMOVAL OF NON-NATIVE PLANTS, BY HAND, AS LISTED ABOVE.
2. CONTINUED APPLIGATION OF IRRIGATION, AS NOTED ABOVE.
3. REMOVAL OF PEST INFESTATIONS, LIKE TENT CATERPILLAR AND
SPRUGE APHID, AS DETAILED BY AOA IN THE MONITORING REPORT.
4. REPLAGEMENT OF PLANTS, AS D I REGTED BY AOA, IF MORTALITY
EXCEEDS 20%.
5. THINNING OF RED ALDER AND MOWING OF TALL GRASSES, AS
D I REGTED BY AOA TO ENSURE SURVIVAL OF PLANTED SPEGIES.
6. ANY ADDITIONAL ITEMS IDENTIFIED BY AOA DURING THE FIVE-YEAR
MONITORING PERIOD.
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