HomeMy WebLinkAboutY5MR 983700007
Witte Mitigation Monitoring Report
Year Five
September 26, 2024
Prepared for:
Lisa Witte
2313 NW Blue Ridge Drive
Seattle, WA 98177-5429
Regarding:
Jefferson County Case #: MLA10-00225 Csp10-00001
Witte Mitigation - Year Five Monitoring Report i | M S A
TABLE OF CONTENTS
1. PROJECT OVERVIEW ................................................................................................. 1
1.1 Introduction.............................................................................................................................................. 1
1.2 Project Location..................................................................................................................................... 1
2. MONITORING ............................................................................................................... 2
3 FINDINGS ....................................................................................................................... 5
TABLES
Table 1. Monitoring and Maintenance Schedule ................................................................ 2
Table 2. Quantitative List of Species - Area A ................................................................... 2
Table 3. Quantitative List of Species - Area B ................................................................... 3
Table 4. Quantitative List of Species - Area C ................................................................... 3
FIGURES
Figure 1. Vicinity Map .......................................................................................................................................... 1
Figure 2. Monitoring Plan Area Maps ........................................................................................................ 4
Figure 3. Planting Area A .................................................................................................................................... 7
Figure 4. Planting Area B ..................................................................................................................................... 7
Figure 5. Planting Area C ................................................................................................................................... 9
Witte Mitigation - Year Five Monitoring Report 1 | M S A
1. PROJECT OVERVIEW
1.1 Introduction
Olympic Wetland Resources LLC prepared a Critical Area Stewardship Plan (CASP) as
mitigation for a residential garage and driveway project, and subsequently an As-Built
report once the mitigation was executed. The As-Built report was accepted, and Jefferson
County Department of Community Development (JCDCD) issued the final permit on
December 18, 2019. The project area, including construction and mitigation, consists of
two Jefferson County parcels (#983700007 and 983700008).
Native plants that were recommended and installed for this plan included a total of 55
trees and shrubs, distributed throughout three planting areas. The planting areas can be
seen in the monitoring plan site map (Figure 2), and in the monitoring photos (Figures 3-
5). A quantitative list of species per area can be found in Tables 2-4.
On July 10th, 2024, a site visit was completed by Marine Surveys & Assessments (MSA)
Ecologist Meg Amos to determine if the plants are meeting the plan’s performance
standards. This report represents the fifth and final year of monitoring.
1.2 Project Location
SW ¼ of Section 29, Township 25N, Range 02W
Site Address: 195 Paradise Cove Road, Brinnon, WA
Parcels: 983700007 and 983700008 in Jefferson County, WA
Figure 1. Vicinity Map
Witte Mitigation - Year Five Monitoring Report 2
2. MONITORING
Three planting areas were identified and photographed during the As-Built site visit in
2019, all of which show plant locations and site conditions (Figure 2). Photos were taken
from the same locations during each monitoring visit to compare and measure the
required performance standards. The monitoring schedule and list of planted species can
be found in the tables below.
Table 1. Monitoring and Maintenance Schedule
As-
Built
Year
2019
Monitoring
Year 2020
Monitoring
Year 2021
Monitoring
Year 2022
Monitoring
Year 2023
Monitoring
Year 2024
Planting ✓
Weeding ✓ * ✓ ✓ ✓ ✓
Irrigation ✓ ✓ ✓ ✓ ✓ ✓
Replacement
Plants
*10 total ✓ ** ***
Photo Areas ✓ ✓ ✓ ✓ ✓ ✓
As-Built
Report ✓
* 2020 - Areas A and B required replacement plants and Area A required weeding of invasives.
** Additional native plants added by landscaper.
*** Additional native plants were added to area C by landscaper.
Table 2. Quantitative List of Species - Area A
2019 As-
Built
Quantity
Botanical Name Common Name 2020
Tally
2021
Tally
2022
Tally
2023
Tally
2024
Tally
1 Acer circinatum Vine maple 1 1 1 2* *2
1 Oemleria
cerasiformis Oso berry
1
1 1 3* *3
4 Pseudotsuga
menzesii Douglas fir 3 3 3 2 2
3 Ribes sanguineum Red-flowering currant 3 3 3 2 2
5 Thuja plicata Western red cedar 5 6 6 8* *8
14 Total 13 14 14 17 17
Note: Area A rotated on the ground by 180° in comparison with the planting map.
*Some well established volunteer species were included in the tally.
Witte Mitigation - Year Five Monitoring Report 3
Table 3. Quantitative List of Species - Area B
2019 As-
Built
Quantity
Botanical Name Common Name 2020
Tally
2021
Tally
2022
Tally
2023
Tally
2024
Tally
2 Acer circinatum Vine maple 2 2 2 2 2
6 Oemleria
cerasiformis Oso berry 2 6 6 6 6
1 Pinus contorta Shore pine 1 1 2 2 2
4 Pseudotsuga
menzesii Douglas fir 3 3 3 3 3
5 Ribes
sanguineum Red-flowering currant 3 8 8 8 8
4 Thuja plicata Western red cedar 2 2 2 2 *1
22 Total 13 22 23 23 22
*One dead cedar.
Table 4. Quantitative List of Species - Area C
2019 As-
Built
Quantity
Botanical Name Common Name 2020
Tally
2021
Tally
2022
Tally
2023
Tally
2024
Tally
2 Acer circinatum Vine maple 2 2 2 4** 3
5 Oemleria
cerasiformis Oso berry 5 5 5 4 5
2 Pinus contorta Shore pine 2 2 2 2 2
3 *Rhododendron
macrophyllum Pacific rhododendron 3 3 * 4 2*** 0
7 Ribes
sanguineum Red-flowering currant 7 7 7 9** 10
19 Total 19 19 20 21 20
* Plan calls for Rhododendron macrophyllum, but Rhododendron occidentale (Western Azalea)
was planted instead. These plants were not in good condition and were replaced in 2021.
** Ribes Sanguineum and Acer circinatum are doing well in the area and plants were added to
compensate for the Rhododendron occidentale.
***The two Rhododendron occidentale remaining were not healthy.
Witte Mitigation - Year Five Monitoring Report 4
Figure 2. Monitoring Plan Area Maps
Area A rotated
on ground by 180°.
Witte Mitigation - Year Five Monitoring Report 5
3. FINDINGS
The end goal of the CASP mitigation plan is to provide protective measures to minimize
impacts to the shoreline critical habitat area buffer. The following performance standards
are used to measure the success of the mitigation area.
Performance standard #1 - Survival Rate:
Year 1: Achieve 100% survival success at the end of the growing season.
Years 2 - 5: Achieve 80% survival success at end of the growing season.
The Critical Area Stewardship Plan is considered successful if 80% or greater of
desirable cover is achieved and the plants are healthy and vigorous during the
fifth year of monitoring. Desirable species also include volunteer native trees and
shrubs.
Performance Standard #2 - Invasive Species:
No more than 10% invasive species should be present at any time during the
monitoring process. Non-desirable species include Scots’ broom (Cytisus
scoparius), English ivy (Hedera hlix) and Himalayan blackberry (Rubus
armeniacus).
Area A is meeting both performance standards in the fifth and final year of monitoring.
The survival rate is ≥ 100% including volunteer native plants that are creeping in from
the sides (Table 2 & Figure 3). Volunteer species include oso berry (Oemleria
cerasiformis), salmonberry (Rubus spectabilis), peafruit rose (Rosa pisocarpa), evergreen
huckleberry (Vaccinium ovatum), big leaf maple (Acer macrophyllum), pacific madrone
(Arbutus menziesii), Douglas fir (Pseudotsuga menziesii), western red cedar (Thuja
plicata), cascara (Rhamnus purshiana), and trailing snowberry (Symphoricarpos mollis).
Area B is also in exceedance of the performance standards for year 5 with 100% survival
of planted species and no invasive species present within the planting area (Table 3 &
Figure 4). Volunteer native species in and around the area include evergreen huckleberry
(V. ovatum), salal (Gaultheria shallon), trailing blackberry (Rubus ursinus), trumpet
honeysuckle (Lonicera ciliosa.), big leaf maple (A. macrophyllum), pacific madrone (A.
menziesii), Douglas fir (P. menziesii), western red cedar (Thuja plicata), and oso berry
(Oemleria cerasiformis).
Area C is exceeding the performance standards with greater than 100% survival of
planted species and no invasive species (Table 4 & Figure 5). Native plants naturalizing
around the periphery of Area C included: evergreen huckleberry (V. ovatum),
serviceberry (Amelanchier alnifolia), salal (G. shallon), trumpet honeysuckle (L.
ciliosa.), pacific madrone (A. menziesii), and Douglas fir (P. menziesii).
Witte Mitigation - Year Five Monitoring Report 6
During the site visit conducted on July 10, 2024, all planting areas were found to be
meeting or exceeding the expectations of the performance standards (80% survival by the
end of year 5 and ≤ 10% cover by invasive species). No further monitoring is required.
Sincerely,
Meg Amos
Senior Ecologist
Witte Mitigation - Year Five Monitoring Report 7
Figure 3. Planting Area A
Looking east/southeast – Year 5 (7/10/2024)
Looking east/southeast – Year 1 (2020)
Figure 4. Planting Area B
Witte Mitigation - Year Five Monitoring Report 8
Looking south – Year 5 (7/10/2024)
Looking northwest – Year 5 (7/10/2024)
Looking west – Year 1 (2020)
Witte Mitigation - Year Five Monitoring Report 9
Figure 5. Planting Area C
Looking northwest – Year 5 (7/10/2024). The fence is new this year.
Witte Mitigation - Year Five Monitoring Report 10
Looking northeast – Year 5 (7/10/2024)
Looking southwest – Year 1 (2020)