HomeMy WebLinkAboutWetland Report 978900076, 978900077360-385-4073
msa@marinesurveysandassessments.com
December 10, 2019
Rick Thomas
580 Olympus Blvd
Port Ludlow, WA 98365
Regarding: Jefferson County Parcels: 978900076 and 978900077
7 2019
JEFFERSON COUNTY DCD
380 Jefferson Street
Port Townsend WA 98368
Marine Surveys & Assessments (MSA) was contacted by Rick Thomas (Client) to conduct a
wetland determination at a property (parcels 978900076 and 978900077) east of Verner
Avenue, Port Ludlow, Washington. The property is located in the northwest quarter of Section
04, Township 28N, Range 01E (Figure 1). The client intends to install a septic system (Permit
# SEP 19-00194) in the western portion of parcel 978900076 (Figure 2). The Jefferson County
Public Land Records (JCPLR) map recorded the presence of wetlands on parcels to the north
and west of the subject parcel (Figure 3). The US Fish and Wildlife Service National Wetlands
Inventory (NWI) map did not record wetlands on the subject parcels. However, freshwater
forested/shrub wetlands were recorded approximately 800 feet to the southwest and estuarine and
marine wetlands were recorded approximately 700 feet to the northwest (Figure 4). MSA
biologists, Meg Amos and Ioana Bociu completed a site visit on November 6, 2019 to
substantiate the absence or presence of wetlands and/or their buffers on, or near the property. A
forested wetland was observed on parcel 978900123, west of Verner Ave. (Figure 5). No wetland
indicators were identified on the project parcel or parcels to the north.
Parcel 978900076 is vacant land, assessed at 0.24 acres. The highest point on the property is to
the east at an elevation of approximately 70 feet above sea level. The topography slopes gently to
the west where it borders Verner Avenue at an elevation of approximately 50 feet above sea
level. Vegetation on the parcel consists of planted lawn grass (Figure 6).
Parcels 978900080 and 978900081, to the north of subject parcel showed no signs of wetland
indicators, contrary to what the JCPLR map shows (Figure 6). Both parcels are developed with
single-family residences. Parcel 978900123, which borders Verner Avenue on the west is
predominantly undisturbed forest consisting of: Western Red Cedar (Thuja plicata), Western
Hemlock (Tsuga heterophylla), Douglas Fir (Pseudotsuga menziesii), Red Alder (Alnus rubra),
Thimbleberry (Rubus parviflorus), Ocean Spray (Holodiscus discolor), Sword Fern
(Polystichum munitum) and Tall Oregon Grape (Mahonia aquifolium). The topography flattens
considerably from east to west. Approximately 160 feet from the subject parcel's west
boundary the upland vegetation transitions to a more hydrophytic plant community with
Salmonberry (Rubus spectabilis), Lady Fern (Athyrium filix femina), Skunk Cabbage
(Symplocarpus foetidus), Reed Canary Grass (Phalaris arundinacea), Horsetail Species
(Equisetum sp.), Buttercup Species (Ranunculus sp.), Siberian Miners -Lettuce (Claytonia
sibirica), Pacific Water -Parsley (Oenanthe sarmentosa) and Piggy -Back Plant (Tolmiea
menziesii). Wetland soil and hydrology indicators were also present near the transition zone in
the plant commumity (Figure 6).
According to Jefferson County Critical Areas Code, Chapter 18.22.330(3) for high impact land
uses (single-family residential use on parcels smaller than one acre), the maximum undelineated
wetland buffer is 350 feet for Category I wetlands and 340 feet for Category II wetlands with a
habitat score of 8-9 points. The minimum undelineated buffer is 70 feet for a Category IV
wetland.
A wetland delineation and rating were not completed as the wetland is off site. The west end of
the proposed septic system is located approximately 210 feet from the apparent wetland
boundary. In normal circumstances, a rating would be completed to determine the buffer from
the apparent wetland boundary. However, Verner Avenue (paved County Road) forms a physical
separation between the wetland and parcel 978900076 (Figure 6) as per Jefferson County Code,
Chapter 18.22.095 (Physical separation — Functional isolation), "Buffer areas which are both
physically separated and functionally isolated from a critical area and do not protect the critical
area from adverse impacts shall be excluded from buffers otherwise required by this chapter.
Functional isolation can occur due to existing public roads, structures, vertical separating, or any
other relevant physical characteristic." This parcel slopes downhill to Verner Avenue and is
completely disconnected from the wetland to the west of the paved road. No impacts to the
wetland or wetland buffer are anticipated.
Respectfully submitted,
Marine Surveys and Assessments
Meg Amos
Wetland Bio[bgist
Amy itman
Senior Biologist, Owner
Figure 1. Vicinity Map
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Servian Later Credits: Sources:
Esri, HERE, Gamin.n, 46 GS, ,':+F �?'�RI. Client: Thomas Vicinity Map Figure
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Iniemup. INOWMEKIF P, NiC,.P, { �, Parcel: Jefferson County 978900078 9}11
FslJapw, w", Ferri Chinn Wetland Determination
1Imbp1. Esigorea,Evi 11!6+2019 by M. Amos, I. 9ioou Thomas
- Noce' (Q)r Mp Date: 111257D19OpenSireerAap oontributors, and
Wetland Determination
dhe GIS User Community
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Servian Later Credits: Sources:
Esri, HERE, Gamin.n, 46 GS, ,':+F �?'�RI. Client: Thomas Vicinity Map Figure
L
Iniemup. INOWMEKIF P, NiC,.P, { �, Parcel: Jefferson County 978900078 9}11
FslJapw, w", Ferri Chinn Wetland Determination
1Imbp1. Esigorea,Evi 11!6+2019 by M. Amos, I. 9ioou Thomas
- Noce' (Q)r Mp Date: 111257D19OpenSireerAap oontributors, and
Wetland Determination
dhe GIS User Community
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Figure 2. Septic Site Plan
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Figure 3. Jefferson County Public Land Records
Figure 4. NWI Wetland Map
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December 9, 2019 TM. me'
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Figure 5. Approximate Wetland Boundary Location
OKI
Hydric Soil Indicator
Standing on Parcel 978900076 Looking West, Across Verner Ave. — Wetland
Approximately 160' Beyond the Physical Separation.
10
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OKI
Hydric Soil Indicator
Standing on Parcel 978900076 Looking West, Across Verner Ave. — Wetland
Approximately 160' Beyond the Physical Separation.
10