HomeMy WebLinkAboutHMP Habitat Managment Plan - 3/30/2008 Habitat Management Plan
PROJECT SITE:
XXX N Canal Hide Away
Hoodsport, WA 98548
Frepared for:
Mr. Michael McGraw
P.O. BOX 429
Onalaska, WA 98570
Prepared By:
AGUA TIERRA
LAND AND WATER SERVICES, INC (AGUA TIERRA)
Rivers Wetlands Lakes Marine Shorelines Slopes
a design— build firm specializing in environmental critical areas
Assess - Permit - Design - Restore - Build
March 2008
Serving Clients inAGUA
TIERRA
NorthwestPacific
Provincesand 9.
0 INTRODUCTION
At the request of Michael McGraw, Agua Tierra Land& Water Services, Inc.(Agua Tierra)prepared this Habitat
Management Plan(HMP)in compliance with Mason County Resource Ordinance 8.52.170 Fish and Wildlife Habitat
Conservation Areas(FWHCA). This report presents the results of our work.
1.1 LOCATION
The project location is noted below and supporting figures appear as Attachments.
• Address: Lot between 191 & 181 N Canal Hide Away, Hoodsport, WA 98548
• County/Parcel: Mason/323305106007
• Public Land survey: Township 23N, Range 3W, Section 30
• Parcel Size: <0.5 Acres
1.2 PROPOSED LAND MODIFICATION PROJECT
We understand the proposed work to include the following land use modifications:
• Construction of a single family residence
• Construction of a retaining wall per geotechnical report recommendations
• Installation of 1 septic tank and drainage field
• Installation of steps to beach
Due to site constraints all development is proposed to occur within the FWHCA.
' 1 REGULATORY AUTHORITY
ison County regulates Fish and Wildlife Habitat Conservation Areas per Section 8.52.170. Standard buffer widths and
building setbacks are listed below.(The applicable resource area for this site is shown in a bold box below).
Habitat Type(Permanent Habitat Type(Interim Standard Building Setback from
Water Typing System) Water Typing System) Buffer R Buffer 11
T e-S Stream Type-1 Stream 150 15
T -F Stream Type-2&3 Stream 150 15
Type SP Stream** 200 15
Type-Np Stream Type-4 Stream 100 15
Type-Ns Stream Type-5 Stream 75 15
Type-1 Saltwater and Lake
T e-S Water Shorelines over 20 acres 100 0
Type-1 Conservancy
Shorelines Saltwater and Lake
T e-S+Water Shorelines over 20 acres 100 15
**SP stream is proposed for consideration if any specific streams are identified that are significant in terms of
anadromous fish and recommended to be protected by a larger buffer.
2.0 SITE DESCRIPTION: GENERAL
The parcel includes the following existing human built features:
• Bulkhead
• Septic tanks
AGUA TIERRA LAND&6TER SERVICESjlNC.
506 Edison Street SE,Suite 100 • Olympia,WA 98501 • T:(360)754-3755 • F:(360)754 3431 mvw.aguaderra.net
Field inspection was conducted on January 22"d, 2008. The parcel is undeveloped land.The eastern property line forms
the shoreline of Hood Canal(designated as a Type-S Shoreline in the Mason County Shoreline Masters Program). The
eastern portion of the property, which is the widest and only buildable portion of the property, is generally flat except for
ie last approximate 10 feet closest to the bulkhead and the Hood Canal.The property is bisected by an easement(20 feet
ide)running north—south through the center of the property.From the easement the property slopes upward to the west.
The parcel is generally triangular in shape.The longest axis is east-west.The north-south dimension of the parcel narrows
incrementally toward the western end.
Supporting maps and figures appear as Attachments.
2.1 FISH AND WILDLIFE HABITAT CONSERVATION AREAS
Hood Canal a Type 1 (S)marine shoreline and its associated buffer are located along the eastern edge of the property.
2.2 EXISTING TOPOGRAPHY
The net slope of the property is downward to the east and the Hood Canal shoreline. The western portion of the site
includes the steepest grade(70%). The eastern portion of the site is flat to gently sloping downward to the east. At about
10 feet from the bulkhead and shoreline the slope increases to approximately 15%. Eastward(waterward)of the bulkhead
the shoreline gently slopes to the water.
2.3 EXISTING SOILS
Soils for the study area are mapped on the website: websoilsurvey.nres.usda.gov. Mapping shows soil series:
• Hoodsport gravelly sandy loam, 30 to 45%slopes
2.4 EXISTING VEGETATION
The site has been heavily managed. As such,the building site is primarily barren with the exception of three Douglas firs
(DBH>15 in). The slope area is dominated by non-native vegetation.
tive vegetation includes:Douglas fir(Pseudotsuga menziesii)and sword fern(Polystichum munitum).
Non-native vegetation includes: Aaron's beard(Hypericum calycinum) and Scotch broom(Cytisus scoparius).
".5 SURROUNDING LAND USES
.urrent surrounding land use is residential.
3.0 APPLICABLE SETBACKS
Mason County stated in a letter dated 07/26/2007 that the building set backs in the critical areas ordinance can not be met
at this location.The letter states that any new construction will require a variance and must be at least 15 feet from the
bulkhead. The proposed site plans satisfy this requirement.
4.0 REASONABLE USE AND AVOIDANCE
Property shape and an on-site slope hazard area create design challenges and limit buildable area. Given the site
constraints the applicant identified the proposed building site as the most practicable location.
The proposed building site is within the buffer of Type S Marine Shoreline.Due to the size and shape of the parcel and
critical area restrictions, impacts to the buffer appear to be unavoidable. The project is surrounded by areas that have
already been impacted from prior permitted,though now nonconforming land uses. The project should have minimal
additional impacts to the FWHCA buffer in this area.
5.0 WDFW SPECIES INFORMATION
A check list for Species of Importance That May Occur in Mason County is included in the Attachments.No species of
importance were observed during fieldwork.
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Washington Department of Fish and Wildlife(WDFW)Priority Species and Habitats database documents the following
species and habitats within one mile of the project site(Please contact Agua Tierra for further information on exact
species locations):
Washington Department Of Fish And Wildlife Priority Species
Re ,rted Within One Mile Of SuNect Parcel.
S cies Proximity to situ"/Location ifs ific
Osprey >0.25 mi.
Band-tailed pigeon <0.25 mi.
Dungeness Crab <0.25 mi./Hood Canal
Pandalid Shrimp >0.25 mi./Hood Canal
Pacific Oyster <0.25 mi./Hood Canal
Hardshell Inter-tidal Clam <0.25 mi./Hood Canal
Hardshell Subtidal Clam >0.25 mi./Hood Canal
Subtidal Geoduck >0.25 mi./Hood Canal
Fall Chum >0.25 mi./Unnamed stream,Hood Canal
Summer Chum >0.25 mi./Unnamed stream,Hood Canal
Coho Salmon >0.25 mi./Unnamed stream,Hood Canal
Resident Coastal Cutthroat >0.25 mi./Unnamed stream,Hood Canal
Estuarine Zone >0.5 mi./Lilliwaup Bay
Wetlands >0.5 mi./Lilliwaup Bay
OSPREY
osprey nest(identified in 1993)is located approximately 0.5 miles from the project area.No impacts are proposed that
would affect suitable osprey habitat.The project is not expected to adversely impact ospreys.
5.2 BAND-TAILED PIGEON
concentration of band-tailed pigeons is located approximately 0.25 miles from the project area.No impacts are
roposed that would affect suitable band-tailed pigeon habitat.The project is not expected to adversely impact band-tailed
pigeons.
5.3 DUNGENESS CRAB AND PANDALID SHRIIVIP
Dungeness crab and pandalid shrimp occur offshore of the project area.No in-water or over-water work is associated with
this project.The proposed project is not expected to have any adverse impact on Dungeness crab or pandalid shrimp or
their habitat.
5.4 OYSTER,CLAM,AND GEODUCK
Pacific oyster,Hardshell Intertidal Clam,and Subtidal Geoduck occur offshore of the project area.No in-water or over-
water work is associated with this project.The proposed project is not expected to have any adverse impact on Pacific
oysters,Hardshell Intertidal Clam,or Subtidal Geoduck or their habitat.
5.5 SALMONID HABITAT
No in-water or over-water work is associated with this project.The proposed project is not expected to adversely impact
Fall Chum, Summer Chum,Puget Sound Coho,or Resident Cutthroat Trout,their forage species, or their spawning
habitat.
5.6 WETLANDS AND ESTUARIES
tlands and estuarine zones were identified within a mile of the subject parcel.During field work no wetland conditions
indicators were present on-site or in the surrounding area.There will be no direct impacts to either wetlands or
estuarine zone from the purposed project.
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6.0 PROPOSED PROJECT IMPACTS
The impacted portion of the FWHCA Shoreline buffers measures approximately 1650ft2. The entire project area is located
within the FWHCA buffer. Specific anticipated impacts are listed below.
egetation Disturbance
Vegetation disturbance will be minimal and consists of the following: removal of two of the three existing Douglas fir's
on site; removal of these trees in necessary to utilize the buildable area. Lawn/grass will also be disturbed.
;oil Disturbance
Approximately 1650ft2 of soil will be disturbed within the FWHCA buffer. Disturbances will include compaction,
addition of impervious surfaces,removal of topsoil, and construction runoff.
Noise/Light/Human Activity Disturbance
Impacts include:
• Temporary construction related noise/activity during daylight hours.
• The surrounding areas are residential and so increased disturbance by human activities will be minimal.
Water Quality
The project should not adversely impact the water quality of the Hood Canal if the recommended mitigation measures are
followed.
7.0 MITIGATION MEASURES
7.1 IMPACT AVOIDANCE AND MINIMIZATION MEASURES
In order to minimize and/or avoid indirect impacts during construction we recommend:
• Best Management Practices(BMP)for erosion control(Attachment); and
• Maintain a minimum 10 foot no entry zone between the project area and the bulkhead.
MITIGATION RECOMMENDATIONS
The following mitigation strategy is proposed:
• Soil enhancement; and
• Install native vegetation within Mitigation Area.
.3 MITIGATION AREA
The Mitigation Area is located on-site and measures approximately 975ft2.The area is immediately east of an existing
bulkhead. Its location is between the proposed impact area and the protected resource to maximize its benefit; 1:1
mitigation areas were not practicable due to site conditions/constraints.
A proposed site plan,planting details, and other supporting figures appear as Attachments.
7.4 OBJECTIVES AND PERFORMANCE STANDARDS
Specific objective and performance standards are listed in the table below.
Mitigation Objectives and Performance Standards"
Item# Objective Performance Standard/s
Enhance 975 Ft2 of degraded soils to a . Remove soils to a depth of 9 in.
depth of 18". • Install 9 in.of organic rich soils
1 Blend native and organic soils to a depth of 18 in.to
form a uniform soil base for native plantings
Install 975 Ft2 of native vegetation. Professionally install plants at the following densities:
2 0 Trees: 1 per 100 Ft2.
• Shrubs&Groundcover: 110/ 1000 Ft2.
Restoration plantings are: • Minimum 80%survive/thrive each year.
30 Established • Plants achieve healthy,competitive and maintenance
• Self sufficient. free condition.
• Weeds controlled by native plants.
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7.5 SOIL ENHANCEMENT
The Soil Enhancement Area is located on-site within the Mitigation Area.
6 NATIVE PLANTINGS
ecommended native plant species and quantities for Restoration and/or Mitigation Areas are listed below and are
organized by designated site location(Area#).Noted quantities are an estimate. Actual final numbers will vary.
Quantities were estimated based on:
• Estimated project impact area;
• Prescribed planting densities; and
• Correction factor/s estimated for existing or retained and salvaged plants.
PLANT MATERIALS TABLE FOR: MITIGATION AREA
Treatment Strata Species On Center Min Qty Notes
Area Spacing Size
ID (Ft)
Tree Douglas fir 10 2 gal 9
Pseudotsuga menziesii
Shrub Nootka rose 5 7
(Rosa nutkana)
Shrub Kinnikinnick 5 8
(Arctostaphylos uva-ursi)
Ground Woodland Strawberry 5 7
Cover (Fragaria vesca)
- Ground American dunegrass 5 8
Cover (Elymus mollis)
inting densities(spacing)will eventually provide a moderately dense, structurally diverse plant community in the
_,atment area.Any existing native plants retained within the treatment area may be counted towards the specified overall
planting densities. All installed vegetation shall be marked with colored flagging to facilitate monitoring inspections.Any
non-native(weed)vegetation should be removed.
.7 NATIVE PLANT INSTALLATION METHODS
Ylease refer to Naive Plant Installation Instructions and detail drawings in Attachments.
8.0 MONITORING
The County requires performance monitoring when appropriate or necessary to ensure effectiveness. Monitoring enables
early adjustments to installed work, if required,to insure project success and provide for amendments to the HMP.
Ordinance requires the applicant to provide performance monitoring by a qualified biologist or like professional.
• The applicant is required to submit an annual and/or final report to the County.
• Duration(number of years)of monitoring anticipated: 3 Years.
Monitoring shall include annual inspection and reporting sufficient to reflect site conditions and progress toward
achievement of performance standards identified in the table above:Mitigation Objectives and Performance Standards.
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9.0 SCHEDULE
The following timeline is designed to achieve the best chances of mitigation success.
SCHEDULE FOR HABITAT MANAGEMENT PLAN
Item# Mitigation Action Possible Project Timing
1 Project construction Spring—Summer 2008
2 Layout Mitigation Area boundaries with staking Fall 2008(by Dec 1)
(plants and other habitat features)
3* Install native plants in Mitigation Area Dormancy 08/09(By March 1)
4* 1"year monitoring report October 2009
5* 2 nd year monitoring report October 2010
6* T year monitoring report October 2011
* Schedule site visit with Agua Tierra Biologist
10.0 STANDARD DISCLOSURE STATEMENT:BIOLOGICAL SERVICES
This report is based on a reconnaissance inspection of existing site conditions.No scientific measurements,tests or
calculations were performed. The findings and report are limited to the normal standard of care of the industry. If
construction is planned and/or implemented using these documents as a reference,no warranty is made by Agua Tierra
concerning conformity of the construction to the conclusions and recommendations of this report unless the plans are
prepared and/or reviewed, and the construction work inspected by a representative of Agua Tierra.
Agua Tierra's work included:
• Review of existing ecological conditions at the project site;
• Review of the client's reported/proposed project plans;
• Review of potential habitat impacts from the proposed project; and
• Recommendations for Best Management Practice's(BMP's)and mitigation measures to minimize
any noted potential adverse habitat impacts.
commendations were made based on background information provided and/or reported by the client, observed on site
by Agua Tierra, and provided by natural resource agency staff and/or databases.Conditions not known to exist are not
reflected in the report.The observations, interpretations, and conclusions herein are based on generally accepted
assessment and/or design practices commensurate with the scope,budget,and schedule of this work. In addition,
:onditions may change at the site due to human influences,floods,groundwater regime changes, or other fa.tors.This
warranty is in lieu of all others,either expressed or implied.
This report has been prepared for the exclusive use by Agua Tierra's clients,the client's authorized representative/s,and
regulatory agencies.It may be used by others only with the expressed written permission of Agua Tierra.The report has
not been prepared for use by other individuals, entities, or other sites.
Final acceptance, concurrence,and approval of findings included in this report are the responsibility of regulatory
agencies.
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11.0 CONCLUSION AND SCHEDULE
This project proposes for 1650ft2 of development within the FWHCA buffer of a Type S Conservancy Marine Shoreline.
A mitigation area of 975ft2 has been recommended to mitigate for impacts to the FWHCA buffer.Minimization measures
A Best Management Practices(BMP's)have also been identified to avoid,minimize,and mitigate for anticipated
lverse impacts. If the project and mitigation measures are implemented as described we believe this project can be
completed while causing no-net loss to the Fish and Wildlife Habitat Conservation Areas on site.
The following recommended schedule is offered for completing the HMP process.
MASTER SCHEDULE FOR HABITAT MANAGEMENT PLAN
Item# - Action Possible Timing
1 Submit a copy of this report to Mason County Early Spring 2008
2 Project construction Spring—Summer 2008
3 Layout Mitigation Area boundaries with staking Fall 2008(by Dec 1)
(plants and other habitat features)
4* Install native plants in Mitigation Area Dormancy 08/09(Between Dec 1 and March 1)
5 Submit an As-Built Plan to Mason County Within 30-days following installation
6 Schedule Agua Tierra for annual monitoring visit Annually in September
7* 1St year monitoring report October 2009
8* 2 nil year monitoring report October 2010
9* 3rd year monitoring report October 2011
* Schedule site visit with Agua Tierra Biologist
Submitted By: Reviewed By:
Jennifer ertou,B.S. hrjsti romuth, Sc.,C.E.
Restoration Specialist Project Manager
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12.0 REFERENCES
Hitchcock, C.Leo and Cron uist,Arthur. 1973. Flora ofthe Pacific Northwest. University of Washington Press.
Seattle, WA.
Knutson,K. Lea and Naef,Virginia L. 1997.Management Recommendations for Washington's Priority Habitats:
Riparian. Washington Department of Fish and Wildlife.Olympia,WA.
Mason County. 2005.Mason County Resource Ordinance#17-02 Attachment B 17.01.110 Fish and Wildlife Habitat
Conservation Areas. Adopted January 10,2005. Shelton,Washington.
National Marine Fisheries Service(NMFS). 1999.A Habitat Approach:Implementation of Section 7 under the
Endangered Species Act for Actions Affecting the Habitat of Anadromous Salmonids. Northwest Region.
National Marine Fisheries Services.2000.Puget Sound ESUListed Threatened. Federal Register.Vol. 65 No.32.Feb.
16,2000.
Rienman,Bruce E.and Mclntypre,John D. 1993. Demographic and habitat requirements for conservation of bull trout.
Gen.Tech.Rep.INT-302. Ogden,UT: U.S.Department of Agriculture,Forest Service,Intermountain Research
Station. 38 p.
Roderick,Elizabeth and Milner,Ruth. 1991.Management Recommendations for Washington's Priority Habitats and
Species. Washington Department of Fish and Wildlife.
Seabird Bycatch Project. 2002.Marbled Murrelet Information Page. Internet address:
h!W://www.iftlish.orwbvcatch3.htm
dmaster,Mark. 1987. The Bald Eagle.Universe Books.New York,New York.
U.S.Army Corps of Engineers.2000.Listed Fish Species Life Histories for Washington State. Regulatory Branch of
Seattle District. Seattle,WA.
ISDA Soil Conservation Service. 1960.Soil Survey:Mason County, Washington.
U.S.Fish and Wildlife Service(USFWS). 999.Endangered and Threatened Wildlife and Plants;Determination of
Threatened Status for Bull Trout in the Coterminous United States;Final Rule. Federal Register:November 1,
1999(Volume 64,Number 210).Internet address:http://endangered.fws.gov/r/fr99670.htm1.
U.S.Fish and Wildlife Service(USFWS). 1998.Bull Trout Interim Conservation Guidance. Lacey,Washington.
Washington Department of Fisheries. 1975.A Catalog of Washington Streams and Salmon Utilization. Vo.2 Coastal.
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ATTACHMENTS
• Regional /Vicinity Map
• Street Map
• Parcel & / Topographic Map
• Aerial Photo
• Soils Map
• Habitat Management Site Plan
AGUA TIERRA LAND AND WATER SERVICES,INC.
506 EDISON STREET,SE,SUITE 100
OLYMPIA,WA 98501
TEL.(360)754-3755
k- LAND&WATER SERVICES'.INC. FAX(360)754-3431
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FIGURE: Regional /Vicinity Map
SOURCE: www.topozone.com
AGUA TIERRA LAND AND WATER SERVICES, INC.
506 EDISON STREET,SE,SUITE 100
* EnrbAOLYMPIA,WA 98501
TEL.(360)754-3755
LAND&WATER SERVICES.INC. FAX(360)754-3431
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FIGURE: Street Map
SOURCE: www.mapquest.com
AGUA TIERRA LAND AND WATER SERVICES,INC.
506 EDISON STREET,SE,SUITE 100
OLYMPIA,WA 98501
TEL.(360)754-3755
LAND &WATER SERVICES.INC.
FAX(360)754-3431
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FIGURE: Parcel &Topographic Map
SOURCE: http://mapmason.co.mason.wa.us/website/mason/viewer.htm
AGUA TIERRA LAND AND WATER SERVICES,INC.
506 EDISON STREET,SE,SUITE 100
OLYMPIA,WA 98501
TEL.(360)754-3755
LAND&WATER SERVICES.INC. FAX 360 754-3431
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PROJECT AREA =
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FIGURE: Aerial Photo
SOURCE: http://mapmason.co.mason.wa.us/website/mason/viewer.htm
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AGUA TIERRA LAND AND WATER SERVICES, INC.
506 EDISON STREET,SE,SUITE 100
!, OLYMPIA,WA 98501 kGUA TEL.(360)754-3755
• FAX(360)754-3431
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Map Unit Symbol Map Unit Description
Hf Hoodsport gravelly sand loam, 30 to 45 percent slopes
PROJECT AREA =0
FIGURE: web Soil Survey Map
SOURCE: http://websoilsurvey.nres.usda.gov/app/WebSoilSurvey
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OWNER: Mike McGraw
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ENT ACTING ON BEHALF OF OWNER:
PARCEL#/S: 323305106007
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AGUA TIERRA DOES NOT PROVIDE LAND SURVEYING, BASE MAP SOURCE FROM:(CHECK BOX)
❑CLIENT INFORMATION ❑COUNTY RECORDS
❑SURVEYOR DIGITAL COPY ❑HAND SKETCH MAP
MAPPING METHOD FOR THIS PROJECT WAS:(CHECK BOX). U o
❑COMPASS AND TAPE Z
GPS POINTS
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LAND SURVEYOR; W 1)�U�
NATURAL RESOURCE SPECIALIST FIELDWORK DATES Q LLI
Jennifer Overton 01/22/08 W rn
GENERAL NOTES �w o,�
W�WC� �
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1 E MASTER LEGEND SHEET FOR ADDITIONAL EXPLANATIONS L
(2)THIS IS NOT A SURVEY. ANY REFERENCE TO PROPERTY LINENS IS/ARE ASSUMED r Z<-rr 4� �
APPROXIMATE AND REPORTED BY CLIENT/OWNER. 3
(3)THIS DRAWING IS PART OF AN ENVIRONMENTAL RESTORATION/MITIGATION PLAN Q Z 0 C o 0
PREPARED BY AGUA TIERRA LAND AND WATER SERVICES INC.(AQUA TIERRA) Q 0 a m
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4)OTHER RELATED ENVIRONMENTAL DOCUMENTS INCLUDE(ANY CHECKED): V<o�w
El []NONEWETLAND DELINEATION❑HABITAT MANAGEMENT PLAN❑STREAM TYPE Z'D O F-LL
OHWM DETERMINATION NONE
(5, -- EPTIC INFORMATION WAS FURNISHED BY OWNER/CLIENT.
— REQUIRED MAP INFORMATION
CRITICAL AREAS BOUNDARIES AND BUFFERS
WETLANDS,STREAMS,RIVERS,LAKES,MARINE SHORELINES,SLOPES,AND OAK TREES
\ EXISTING AND PROPOSED HUMAN FEATURES
BUILDINGS.UTILITIES,DRIVEWAYS.IMPERVIOUS SURFACES,PROPERTY OUTLINE.
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