Mitigation As-Built_complete.pdfENVIRONMENTAL CONSULTING
March 22, 2019
Kent Dietz
8006 S Lake Stevens Road
Lake Stevens, WA 98258
RE: 742 Daley Street — As -Built
On March 21, 2019, Wetland Resources, Inc. (WRY conducted an as -built inspection at the 0.24-
acre site located at 742 Daley Street in Edmonds, WA (Snohomish County parcel
#00434208401000) to verify correct installation of approved mitigation measures that were
required by the City during the critical areas variance approval process (permit #PLN20130044).
A single-family home and driveway has been constructed on the property. Some minor
adjustments were made from the original mitigation plan in regards to plant species quantities
and the placement of the mitigation plantings. It is the opinion of WRI that the plantings are
appropriate and will successfully meet the stated goals of the approved mitigation plan (Critical
Areas Study and Mitigation Plan, WRI, Revision 1, dated January 7, 2016).
The goals of the approved mitigation plan are:
• Compensate for the loss of stream buffer resulting from the development.
• Provide protection for the on -site stream buffer.
These goals are to be met by performing the following actions (objectives):
• Enhance 1,689 SF of existing stream buffer by installing 15 native trees, 120 native
shrubs, 31 native ferns, and 48 willow stakes within the enhancement areas.
• Install a permanent, split -rail fence along the edge of the on -site stream buffer.
The performance standards as stated in the approved mitigation plan are as follows:
• Survival of planted trees, shrubs, ferns, and willow stakes will be 100% following the first
year of monitoring; 80% following the third year; and 70% by the fifth year. All dead
plants shall be replaced following the first year of monitoring.
• Tree and shrub areal coverage will be 30% at the end of the third year of monitoring and
60% at the end of the fifth year of monitoring (Note: desirable native volunteer species
9505 1911 Avenue SE, Suite 106, Everett, WA 98208 425.337.3174 www.wetlandresources.com
(e.g. red alder, salmonberry) may contribute up to 20% cover in each enhancement area.
If volunteer species exceed 20% cover, control measures shall be initiated in an effort to
maintain species diversity).
• Invasive and non-native species shall not provide more than 25% areal coverage
throughout the enhancement areas at any time.
• The split -rail fence shall be installed per the specifications and shall be maintained
throughout the five-year monitoring period.
As -Built Conditions
Per the approved mitigation plan, non-native and invasive species have been removed from the
enhancement areas. No non-native or invasive species were observed in any of the enhancement
areas during the as -built inspection. Mitigation plantings have been installed in each of the
designated enhancement areas. A split -rail fence has been installed between the home and the
stream buffer as shown on the approved Site Plan and Mitigation Map.
Some minor adjustments have been made to the original mitigation planting plans. It appears
that some of the plants specified for Enhancement Areas # 1 and #2 were installed in
Enhancement Area #3, and Enhancement Area #5 has six fewer Pacific willow (Salix lasiandra)
plants than specified in the original planting plan. The enhancement areas all exhibit
appropriate planting densities and species have been planted in appropriate locations given their
ecological requirements. The overall number of plants installed exceeds the number specified in
the original planting plan. Therefore, WRI has determined that the changes described above are
acceptable. One Salmonberry (Rubus spectabilis) plant was substituted for snowberry
(Symphoricarpos albus) in Enhancement Area #2. This is an appropriate species substitution for this
location. The shapes of Enhancement Areas #3 and 4 differ slightly from that shown on the
original planting plan. This is likely due to the condition of this area following the removal of
Japanese rose (Kem*a japonica) that was dominant prior to implementation of the mitigation
measures. The planting densities and species are appropriate for these areas and these changes
are also acceptable.
Plants have been installed throughout the mitigation areas at appropriate densities and in
suitable locations by species. Overall, the total number of plants specified in the approved
planting plan was 214 and the total number of plants installed is 223. Mulch has been applied
around installed plants and plants have been marked with flagging, as specified in the approved
plan. A temporary irrigation system has been installed to provide water to the mitigation
planting areas during the dry season.
It is the opinion of WRI that the installed mitigation plantings are appropriate and are sufficient
to achieve the goals and meet the performance standards as required in the approved mitigation
plan. The enclosed map (As -Built Mitigation Plan, Sheet 1 / 1) shows the location of the planting
areas. The as -built planting plans for each of the enhancement areas are provided below.
Wetland Resources, Inc. 2 Dietz — Daley Street
March 22, 2019 WRI # 15101
As -Built Mitigation Planting Plans
Enhancement Area #1 (984 SF)
Species
Scientific Name
Size
Spacing
Quantity
Specified
Quantity
Installed
Douglas fir*
Pseudotsuga menziesu
1 gallon
8' on
center
7
4
Vine maple
Acer circinatum
1 gallon
3' OC
20
15
Thimbleberry
Rubus parvifloms
1 gallon
3' OC
20
20
Snowberry
Symphoficarpos albus
1 gallon
3' OC
20
21
Cascara
Fran la purshiana
1 gallon
3' OC
ITOC
20
15
Sword fern
Pol stichum munitum
1 gallon
20
21
Total
107
96
Enhancement Area #2 (284 SF)
Species
Scientific Name
Size
S
Spacing
Quantity
Specified
Quantity
Installed
Douglas fir
Pseudotsu a menziesii
1 gallon
8' OC
4
4
Vine maple
Acer circinatum
1 gallon
3' OC
6
6
Tfirnbleberry
Rubus parvifloms
1 gallon
3' OC
6
5
Snowberry
S m horicar os albus
1 gallon
3' OC
6
4
Cascara
Fran la purshiana
1 gallon
3' OC
6
6
Sword fern
Pol stichum munitum
1 gallon
ITOC
6
6
Salmonberry
Rubus s ectabdis
1 gallon
T OC
0
1
Total
34
32
Wetland Resources, Inc. 3 Dietz — Daley Street
March 22, 2019 WRI # 15101
Enhancement Area #3 (228 SF)
Species
Scientific Name
Size
Spacing
S
Quantity
Specified
Quantity
Installed
Douglas fir
Pseudotsu a menziesii
1 gallon
8' OC
2
7
Western red cedar
Thu'a plicata
1 gallon
8' OC
2
4
Vine maple
Acer arcinatum
1 gallon
3' OC
4
11
Tbinibleberry
Rubus parviflorus
1 gallon
3' OC
4
7
Snowberry
Sympho7icarpos albus
1 gallon
3' OC
4
3
Cascara
Fran la purshLiana
1 gallon
3' OC
4
10
Sword fern
Pol stichum munitum
1 gallon
3' OC
5
10
Total
25
52
Enhancement Area #4 (77 SF)
Quantity
Quantity
Species
Scientific Name
Size
S
Spacing
Specified
Installed
s (-3
Pacific willow
Salix lucida
2' OC
10
10
long)
s (-3'
Sitka willow
Salix sitchensis
2' OC
10
11
long)
Total
20
21
Enhancement Area #5 (116 SF)
Quantity
Quantity
Species
Scientific Name
Size
S
Spacing
Specified
Installed
s (-3'
Pacific willow
Salix lucida
2' OC
14
8
long)
s (-3
Sitka willow
Salix sitchensis
2' OC
14
14
long)
Total
28
22
Total Plants Specified
214
Total Plants Installed
1223
Wetland Resources, Inc. 4 Dietz — Daley Street
March 22, 2019 WRI # 15101
Photographs
Three permanent photo points were established at the time of the as -built inspection to
document the condition of the enhancement areas. Photographs taken at that time are provided
below. White flags were placed next to each installed plant. Most of the installed plants are still in
bud or are just beginning to leaf out. Photo point locations are depicted on the enclosed As Built
Mitigation Plan Map (Sheet 1 / 1).
Photo Point 1: Enhancement Areas # 1 and #5.
Photo Point 2: Enhancement Areas #2 and #4.
Wetland Resources, Inc. 5 Dietz — Daley Street
March 22, 2019 WRI # 15101
Photo Point 3: Enhancement Area #3.
Conclusions and Recommendations
The installed mitigation measures have resulted in direct improvements in critical area functions
and values on the site. It is expected that with regular maintenance and irrigation this project has
a high likelihood of success. The project is ready for inspection and approval.
Regular maintenance including replacement of dead plants, irrigation during the dry season,
removal of invasive and non-native vegetation, trash cleanup, and fence repair as described in
the approved plan is recommended to ensure the success of this mitigation project. Please note
that the temporary irrigation system should be fully operational by June 15 and winterized by
October 15.
Wetland Resources, Inc. 6 Dietz — Daley Street
March 22, 2019 WRI # 15101
Use of this Report
This As -Built mitigation compliance report is supplied to Kent Dietz as a means of evaluating
installed mitigation measures. This report is based largely on readily observable conditions and,
to a lesser extent, on readily ascertainable conditions. No attempt has been made to determine
hidden or concealed conditions.
The laws applicable to wetlands are subject to varying interpretations and may be changed at
any time by the courts or legislative bodies. This report is intended to provide information
deemed relevant in the applicant's attempt to comply with the laws now in effect. The work for
this report has conformed to the standard of care employed by wetland ecologists. No other
representation or warranty is made concerning the work or this report and any implied
representation or warranty is disclaimed.
Should you have any questions or concerns, please feel free to contact me.
Wetland Resources, Inc.
Joffe Goodman
Associate Ecologist
425-337-3174
Enclosures: As Built Mitigation Plan (Sheet 1 / 1)
Wetland Resources, Inc. 7 Dietz — Daley Street
March 22, 2019 WRI # 15101
AS BUILT MITIGATION PLAN
DIETZ - DALEY STREET
PORTION OF SECTION 24, TOWNSHIP 27N, RANGE 03E, W.M.
DALEY STREET EDGE OF ASPHALT
-- SD— --- SD.
---SD
somN
SD
EXISTING BOARD FENCE
F__X X X X X X X� fA
O
UTILITIES I O
GABION WALL
SLOPE TO MATCH —
BOTH SIDES OF
DRIVEWAY
AS REQUIRED
20' BSBL
PROPOSED
SFR
\ POWER CONNECTION
\ AT SIDE OF BLDG
J
\ m
\ m
�\ n
o l
U
\ � D
F
\\ X
\ EDGE OF ASPHALT
\
EOOj
BOARD FENCE (EX.)
BOX CULVERT \ (Pi
�1 PLC'
`NOOO
1 5
4 \ 1
� Nye
SPLIT -RAIL
n
FENCE ZD
o n
P3 �
ALL AREAS OUTSIDE OF
SPLIT -RAIL FENCE WILL
REMAIN AS BUFFER. EXISTING
NATIVE VEGETATION TO
REMAIN.
ROCKERY (EX.) 90.0'
100-FOOT
STREAM BUFFER
— SHELL CREEK
---- 100-FOOT STREAM BUFFER
ENHANCEMENT
AREAS
WILLOW STAKE ENHANCEMENT
AREAS
I
15'BSBL
ho
--=�WjRFFFN
NOTES:
*STREAM BUFFER COMPRISES
ENTIRETY OF PROPERTY OUTSIDE
OF SPLIT -RAIL FENCE.
*EROSION CONTROL BMP'S MUST BE
INSTALLED AROUND AREA OF DISTURBANCE
UNTIL CONSTRUCTION ACTIVITIES ARE COMPLETE.
*THE EXACT LOCATION AND CONFIGURATION
OF THE PLANTING AREAS MAY REQUIRE ADJUSTMENT
DUE TO EXISTING VEGETATION. THIS WILL BE DONE
ON -SITE BY THE LEAD ECOLOGIST AND LANDSCAPER
PRIOR TO PLANTING. ANY CHANGES TO THE
PLANTING AREAS WILL BE DISCUSSED IN THE
AS -BUILT REPORT.
*AREAS OF DENSE/SIGNIFICANT INVASIVE VEGETATION
THROUGHOUT THE STREAM BUFFER WILL BE REMOVED
AND RE -PLANTED WITH NATIVE VEGETATION. THIS WILL
BE DISCUSSED IN THE AS -BUILT REPORT.
�t Delineation / Miti�dtion / Restoration /Habitat Creation /Permit Assistance
AS BUILT MITIGATION PLAN
DIETZ - DALEY STREET
Scale 1" = 20'
0 10 20 30 40
X SPLIT -RAIL FENCE
P1 PHOTO POINTS
950519th Avenue S.E. Suite 106 Everett,Washington 98208
Phone: (425) 337-3174
Fax: (425) 337-3045
Email: mailbox@wetlandresources.com
Sheet 1/1
Kent Dietz WRI Job #15101
8006 S. Lake Stevens Rd. Drawn by: JG
Lake Stevens, WA 98258 March 22, 2019