HABITAT TECHNOLOGIES

wetlands, streams, fisheries, wildlife – mitigation and permitting solutions P.O. Box 1088, Puyallup, Washington 98371

253-845-5119 contact@habitattechnologies.net

STREAM CORRIDOR BUFFER ESTABLISHMENT AND RESTORATION

PROGRAM

CREEKSIDE TOWNHOMES RESIDENTIAL COMMUNITY

PARCEL 9225000141 CITY OF SUMNER, PIERCE COUNTY, WASHINGTON

prepared for

Ms. Cheryl Ebsworth, Senior Planner @ Apex Engineering, Inc.

2601 South 35th Street, Suite 200 Tacoma, Washington 98409

prepared by

HABITAT TECHNOLOGIES

P.O. Box 1088 Puyallup, Washington 98371-1088

253-845-5119

JULY 16, 2020

Table of Contents

INTRODUCTION .............................................................................................................. 1

PROJECT SITE DESCRIPTION ................................................................................... 1

ONSITE ASSESSMENTS AND CRITICAL AREAS VERIFICATION ............................... 1

ONSITE ASSESSMENTS ............................................................................................. 1

STREAM BUFFER ESTABLISHMENT/RESTORATION PROGRAM .............................. 3

RESTORATION BENEFITS ......................................................................................... 3 DESCRIPTION OF THE BUFFER PROGRAM ............................................................. 4 GOAL OF THE COMPENSATORY BUFFER PROGRAM ............................................. 5 SELECTED PLANT COMMUNITIES ............................................................................ 6 IMPLEMENTATION INSPECTION ............................................................................... 7 IMPLEMENTATION SCHEDULE .................................................................................. 8 PROJECT MONITORING ............................................................................................. 8 STANDARDS OF SUCCESS ........................................................................................ 9 VEGETATION MAINTENANCE PLAN ........................................................................ 10 REMOVAL OF INVASIVE NON-NATIVE VEGETATION ............................................. 10 CONTINGENCY PLAN ............................................................................................... 11 TEMPORARY IRRIGATION ....................................................................................... 11 PLANTING NOTES .................................................................................................... 12 FINANCIAL GUARANTEE .......................................................................................... 12

STANDARD OF CARE .................................................................................................. 13

FIGURES ....................................................................................................................... 14

ATTACHMENT .............................................................................................................. 15

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INTRODUCTION

This document details the STREAM CORRIDOR BUFFER ESTABLISHMENT AND RESTORATION PROGRAM to be implemented as a part of the development of the Creekside Townhomes Residential Community (project site). The project site is located along Elm Street within the City of Sumner, Pierce County, Washington (part of Section 19, Township 20N, Range 05E, W.M.) (Figure 1).

PROJECT SITE DESCRIPTION

The project site was composed of an existing, approximately 2.78-acre, presently vacant parcel. The project site was generally flat and had undergone a number of prior land use manipulations over the past several decades. These prior actions had included the development and management of prior livestock pasture, the development and management of prior agricultural production area; clearing and grading; the ditching of seasonal stormwater runoff; the ongoing management of adjacent public roadways and utilities; and the development of adjacent parcels. The project site was accessed via a connection to Elm Street East located along the southern boundary. The project site was located within a well urbanized area that included single-family and multi-family residential areas, and public roadways. The Salmon Springs Creek (Strawberry Creek) Corridor (a tributary to the Lower White River within the Puyallup Watershed) was located to the east of the eastern boundary of the project site. Directions to Project Site: From the City of Sumner City Hall continue northward on Alder Avenue to Main Street. Turn east onto Main Street and continue to 160th Avenue East. Turn north onto 160th Avenue East and continue to Elm Street East. Project site is located north of Elm Street East at the end of 160th Avenue East.

ONSITE ASSESSMENTS AND CRITICAL AREAS VERIFICATION

ONSITE ASSESSMENTS

Spring 2006: During the spring of 2006 Habitat Technologies completed an assessment of potential critical areas (wetlands, streams, critical fish and wildlife habitats) within the project site. This prior assessment did not identify any critical areas within the project site. This prior assessment did identify Salmon Springs Creek (Strawberry Creek) offsite to the east of the eastern boundary of the project site. Early Winter 2015: A wetland delineation was completed for the project site in January 2015 by J.S. Jones and Associates, Inc. This assessment looked at two representative sample plots within the project site. The first sample plot (SL1) was defined as not

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dominated by hydric soils and as not exhibiting saturation within the upper 12 inches of the soil profile. The second sample plot (SL2) was defined as not dominated by hydric soils but to exhibit saturation within 12 inches of the soil profile. However, based on the January 2015 site visit the J.S. Jones team identified the area around SL2 as meeting the criteria for designation as “wetland” even through all three of the establish wetland criteria were not met (i.e. non-hydric soils) and the assessment of hydrology was not completed during the growing season. As discussed with Mr. Mendenhall, City of Sumner Planner (per.comm 2019) as a part of a subsequent review he completed during April 2015 of the J.S. Jones assessment, Mr. Mendenhall identified that the area associated with SL2 that drained somewhat well to moderately well and did not meet the wetland hydrology criteria during the early part of the growing season. Summer 2019: Following discussions with Mr. Mendenhall, Habitat Technologies completed an onsite assessment during the summer of 2019. This assessment identified that the project site did not contain wetlands, streams, or critical fish and wildlife habitat areas. The project site had been modified by prior and ongoing land use actions typically associated with prior and eventual urbanization consistent with the City of Sumner Comprehensive Plan and local zoning. Salmon Springs Creek (Strawberry Creek) was identified to the east of the eastern boundary of the project site. This aquatic area provided documented habitats for a variety of salmonid fish species and would appear best defined as a City of Sumner Type F Stream (fish bearing). The standard buffer for a City of Sumner Type F Stream is 100 feet in width as measured from the ordinary high water mark (see CRITICAL AREAS ASSESSMENT, PARCEL 9225000141, Creekside Townhomes, Elm Street East, City of Sumner, Pierce County, Washington dated September 24, 2019). Spring 2020: Pursuant to findings noted in the summer 2019 assessment and future discussions with Mr. Eric Mendenhall, Habitat Technologies implemented a spring hydrology monitoring program within the project site during the early growing season of 2020. The overall objective of this hydrology monitoring program was to define whether or not wetland hydrology patterns exist along and immediately east of the eastern boundary of the proposed project site. As defined through this spring 2020 hydrology monitoring program, with the exception of one of the monitoring plots, the area between the proposed Creekside Townhomes and Salmon Springs Creek (Strawberry Creek) was identified as not meeting the established “wetland hydrology” criteria. This area appeared to drain moderately well following seasonal storm events. In addition, soil characteristics within this area were similar to the soil characteristics documented within prior assessments. One monitoring tube (T2) exhibited field data that met the criteria for “wetland hydrology.” This monitoring plot was within a very small depressional area – approximately 20 feet by 20 feet. As defined by the monitoring results for monitoring tubes T3 and T1, and test plots M1 and M2 this small depression was isolated not contiguous with Salmon Springs Creek (Strawberry Creek). Unfortunately, this monitoring plot was routinely vandalized by adjacent “campers” and such actions

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included the filling of the monitoring tube with the clay sealant used around the collar of the monitoring tube and the removal of the monitoring tube. The monitoring tube was re-installed a number of times through the monitoring period and field data was collected often using the open hole associated with the monitoring tube. The small depression associated with monitoring tube T2 was approximately 400 square feet in size and dominated by reed canarygrass (Phalaris arundinacea). This depression appeared best defined as a City of Sumner Category IV Wetland with a standard buffer of 40 feet in width. As such, neither this wetland nor its associated buffer would appear to encroach westerly of the eastern boundary of the Creekside Townhomes project site.

STREAM BUFFER ESTABLISHMENT/RESTORATION PROGRAM

The Selected Development Action for the proposed Creekside Townhomes Residential Community focuses on the development of residential homesites consistent with the City of Sumner Comprehensive Plan and local zoning that would help to meet the overall objective of providing affordable housing opportunities within the City of Sumner (16.46.170.D). The development of this residential community would not adversely encroach into defined critical areas for their associated standard protective buffers. In addition, the development of this residential community shall implement a Stream Buffer Establishment/Restoration Program to help ensure that the Selected Development Action would not adversely impact the character of the Salmon Springs Creek (Strawberry Creek) Corridor. As noted above, the ordinary high water mark for Salmon Springs Creek (Strawberry Creek) is located approximately 70 feet to the east of the eastern boundary of the Creekside Townhomes Residential Community. As such, the standard buffer of 100 feet in width associated with this City of Sumner Type F Stream would encroach approximately 30 feet along the eastern portion of the project site. To ensure that onsite development actions would not adversely impact the physical or biological functions and values of the Salmon Springs Creek (Strawberry Creek) Corridor the onsite portion of the standard buffer shall be restored through the establishment of a viable plant community composed of desirable native plant species. The western boundary of the restored onsite buffer shall also be fenced (or other City approved method) to limit adverse encroachments into the established buffer.

RESTORATION BENEFITS

That portion of the standard 100-foot buffer associated with Salmon Springs Creek (Strawberry Creek) within the project site is presently dominated by a mono-stand of reed canarygrass. The primary elements of the Stream Corridor Buffer Establishment and Restoration Program focuses on the creation of a viable buffer plant community

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composed of a variety of desirable native plant species along the onsite portion of the standard buffer for Salmon Springs Creek (Strawberry Creek). The establishment of this viable plant buffer plant community would enhanced structure and plant diversity; would provide greater nesting, cover, perching, and foraging opportunities for local wildlife; would potentially provide a source of woody debris and detritus for the aquatic environment, and provide increased noise, light, and dust protections for the stream corridor.

DESCRIPTION OF THE BUFFER PROGRAM

1. The onsite buffer area shall be mowed, disced, and removed to help reduce the

present character of the reed canarygrass plant community. 2. The established onsite buffer shall be planted with a variety of native trees and

shrubs common to the local area and selected to provide enhanced biological and physical buffer functions (see Attachment). To help control the impact of reed canarygrass and potential impacts during invasive species control actions, a 4-foot square mat of biodegradable fabric or cardboard may be placed around the base of each installed plant. A minimum 2-inch layer of composted organic mulch shall then be placed around each plant to further reduce the re-establishment of reed canarygrass.

3. Temporary and long-term erosion control measures shall be implemented. These

measures include the use of Best Management Practices during initial actions and as a part of the maintenance program.

4. The outer boundary of the established buffer shall be fences with a split-rail fence (or

other City approved fence) and posted with standard City of Sumner buffer boundary signs to clearly define the buffer area and help to reduce the potential for human intrusion.

5. A minimum of eight (8) monitoring plots shall be established within the planted buffer

area. Each monitoring plot shall be posted and be defined as a 15-foot radius circle around the numbered post. All installed plants within each plot shall be documented for use during the accompanying monitoring program and to define the performance criteria.

6. All onsite activities shall be completed at the technical direction of the onsite biologist.

7. Upon the completion of initial buffer planting actions an Implementation Report shall

be prepared and submitted to the City of Sumner and potentially other involved resource agencies. The Implementation Report shall include a description of who completed the onsite actions, a description of the scope of work completed, a description of work specifications, photo documentation of the actions taken, initial

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plant documentation at each established monitoring plot, and a detailed timeline of completed actions. The Implementation Report shall also include an initial project evaluation prepared by the project biologist.

8. Following the acceptance of the Implementation Report by the City of Sumner a five-

year monitoring program was initially proposed to document the success of the restoration program. This monitoring program shall include annual Monitoring Reports to be submitted to the City of Sumner and potentially other invoice resource agencies.

9. A series of financial guarantees shall be established by the project proponent and

held by the City of Sumner to assure that the proposed implementation and monitoring elements are completed and prove successful.

10. Site development shall utilize designs to minimize potential impact to the established

onsite buffer area. Such designs include directional lighting away from the buffer area and onsite water quality protections.

GOAL OF THE COMPENSATORY BUFFER PROGRAM

The GOAL of the Stream Corridor Buffer Establishment and Restoration Program is to establish and restoration the physical and biological functions of the onsite buffer. This program would also establish a viable plant community composed of native trees and shrubs within an area impacted by prior land use actions. Objective A. The onsite established buffer shall exhibit a scrub/shrub and sapling tree vegetation class within five years following initial planting.

Performance Criterion #A1: As defined by monitoring 100% of the trees and

shrubs initially planted within the established onsite buffer shall exhibit survival through the end of the first growing season following initial planting.

Performance Criterion #A2: As defined by monitoring 80% of the trees and

shrubs initially planted within the onsite established buffer shall exhibit survival through the end of the second growing season following initial planting.

Performance Criterion #A3: As defined by monitoring within the onsite

established buffer the scrub/shrub and sapling vegetation class shall exhibit the following minimum aerial coverage during the fall monitoring periods following initial planting. For purposes of the aerial coverage determination the scrub/shrub and sapling vegetation class shall include both planted and desirable volunteer species.

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MONITORING YEAR MINIMUM AERIAL COVERAGE

End of monitoring year one 5%

End of monitoring year two 10%

End of monitoring year three 20%

End of monitoring year five 30%

Performance Criterion #A4: As defined by monitoring within the onsite

established buffer a minimum of five (5) species of native shrubs and five (5) species of native trees (combined count) shall be present at the end of monitoring year five.

Objective B. Invasive species shall not adversely impact the establishment of desirable species within the onsite buffer.

Performance Criterion #B1: As defined by onsite monitoring within the onsite

buffer invasive species shall not exceed 10% aerial coverage at the end of the first, second, third, and fifth growing seasons following initial planting. Invasive species include reed canarygrass, Canadian thistle, Himalayan blackberry, Scots broom, and other species listed by the WDOE as invasive.

Performance Criterion #B2: As defined by onsite monitoring throughout the

onsite buffer, knotweed (Polygonum spp.) shall not be present at any time during the monitoring period.

SELECTED PLANT COMMUNITIES

The plants selected for placement within the onsite buffer shall be obtained as nursery stock. These selected species are native and commonly occur in the local area. The plant species prescribed are also selected to increase plant diversity, match present offsite communities, increase wildlife habitats, and enhance the aquatic environment. Many of the selected species can be somewhat sensitive to direct sunlight upon initial removal from the nursery and installation within the buffer area. Special care shall be undertaken by the planting contractor during installation to utilize existing shading and to ensure that plants are handled and installed with some care. Adequate irrigation must also be provided at the time of installation. In addition, special planting actions shall be undertaken to help control reed canarygrass. These actions shall include the initial mowing of the reed canarygrass, dicing to remove of reed canarygrass rootballs, and the placement of a cardboard or biodegradable fabric pad and composted mulch around each installed plant.

NUMBER COMMON NAME (ID) - SCIENTIFIC NAME SIZE

18 Paper birch (BEP) - Betula papyrifera 2 gallon

18 Western hawthorne (CRD) - Crataegus douglasii 2 gallon

18 Oregon ash (FRL) – Fraxinus latifolia 2 gallon

19 Sitka spruce (PIS) – Picea sitchensis 2 gallon

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19 Western crabapple (PYF) - Pyrus fusca 2 gallon

19 Pacific willow (SAL) - Salix lasiandra 2 gallon

19 Western red cedar (THP) - Thuja plicata 2 gallon

130 TOTAL TREES

NUMBER COMMON NAME (ID) - SCIENTIFIC NAME SIZE

13 Vine maple (ACC) - Acer circinatum 1 gallon

32 Red-osier dogwood (COS) - Cornus stolonifera 1 gallon

32 Oceanspray (HOD) - Holodiscus discolor 1 gallon

31 Twinberry (LOI) - Lonicera involucrata 1 gallon

31 Pacific ninebark (PHC) - Physocarpus capitatus 1 gallon

26 Red flowering currant (RIS) - Ribes sanguineum 1 gallon

31 Nootka rose (RON) - Rosa nutkana 1 gallon

31 Sitka willow (SAS) - Salix sitchensis 1 gallon

31 Snowberry (SYA) - Symphoricarpus albus 1 gallon

258 TOTAL SHRUBS

IMPLEMENTATION INSPECTION

Essential to the success of the Stream Corridor Buffer Establishment and Restoration Program is the accurate inspection of onsite activities immediately prior to and during the initial invasive control and planting phase. These activities include pre-implementation site inspection, onsite inspection and technical direction during invasive species removal and planting activities, and post-planting site inspection and evaluation. The project biologist shall complete onsite inspections, verify, and approve the following project tasks (at a minimum):

1. Marking of work areas and access corridors. 2. Removal of invasive species and existing garbage. 3. Nursery stock acceptance. 4. Modification of plant species and sizes if required. 5. Installation of the irrigation system. 6. Installation of buffer boundary fencing and signs.

The pre-implementation site inspection allows the project team and the project biologist to evaluate and, if necessary, adjust the onsite implementation steps. These steps include analysis of project site elevation features, project sequencing and timing, unforeseen required minor modifications to the original establishment plan, and the establishment of environmental protections (silt fences, etc.) required during planting. Onsite technical inspection during implementation and planting activities shall be implemented by the project biologist. The project biologist shall perform implementation oversight and address minor unforeseen implementation difficulties to assure that the goal of the buffer program is met.

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The project biologist shall be responsible for ensuring that the species and sizes of native plants selected and noted within the final planting plan are utilized during implementation. If selected native species become unavailable, the project biologist shall approve, based on City standards, substitute plant species to assure that the goal of the buffer program is met. Following the completion of onsite planting activities an Implementation Report plan shall be prepared and submitted to the City of Sumner and to potentially other involved resource agencies. The Implementation Report shall include a description of who completed the onsite compensatory actions, a description of the scope of work completed, a description of work specifications, photo documentation of the actions taken, initial plant documentation at each established monitoring plot, and a detailed timeline of completed actions. The Implementation Report shall also include a project evaluation prepared by the project biologist.

IMPLEMENTATION SCHEDULE

PROJECT TASK TASK SCHEDULE

Onsite pre-implementation meeting Completed by August 1, 202x

Placement of protective fencing. Final marking and identification of work area and access corridors.

Completed by August 5, 202x

Removal of invasive plants and discing of compacted areas to remove rootballs of reed canarygrass.

Completed by August 15, 202x

City of Sumner environmental staff review of the planting areas.

Completed by September 15, 202x

Planting of onsite buffer area and installation of protective biodegradable matting and mulch to limit the establishment of reed canarygrass.

Completed by October 15, 202x

Implementation Report to City. Completed by November 5, 202x

Year 202x represents the completion of the Implementation Report.

PROJECT MONITORING

Following the successful implementation of the buffer planting actions and the acceptance of the Implementation Report by the City of Sumner a five-year monitoring and evaluation program shall be undertaken. The purpose of this monitoring is to ensure the success of the Stream Corridor Buffer Establishment and Restoration Program as measured by an established set of performance criteria.

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STANDARDS OF SUCCESS

A minimum of eight (8) 15-foot radius sample plots shall be established within the onsite buffer area. The evaluation of the success of the Stream Corridor Buffer Establishment and Restoration Program shall be based on the defined performance criteria. The defined performance criteria shall be applied at the times of yearly monitoring. Sample locations shall be shown on the Implementation Report graphic and shall correspond to identified photopoints. 1. As a part of monitoring years one and two the project biologist shall count the

number of live plants which were planted within the identified monitoring plots. Plants shall be identified to species and observations of general plant condition (i.e., plant health, amount of new growth) are to be recorded.

2. During each monitoring period and at each identified sample plot the project biologist

shall determine percent coverage of vegetation for emergent species and for the scrub/shrub and sapling tree species. The project biologist shall also document species richness within each sample plot.

3. At identified sample plots the project biologist shall count the number - and tag for

removal - undesirable invasive species and estimate the aerial coverage (as if the observer were looking straight down from above) of these invasive species.

4. As a part of monitoring years one and two the project biologist shall count the

number of desirable "volunteer" plants and estimate the aerial coverage of these plants.

5. The project biologist shall take photographs that show the onsite buffer area. During

the monitoring period photos shall be taken in the same direction and at the same location to provide a series of photos. These photos shall show plant growth, plant species, and plant coverage.

6. Upon the completion of each annual monitoring period the project biologist shall

prepare a report defining methods, observations, and results along with the date the observations were completed. Each report shall be provided to the City of Sumner and involved resource agencies.

MONITORING

YEAR

PLANT COMMUNITY MONITORING MONITORING REPORT

YEAR-1 On or about April 15, 202x+1

On or about Sept. 15, 202x+1 Report due Oct. 7, 202x+1

YEAR-2 On or about April 15, 202x+2

On or about Sept. 15, 202x+2 Report due Oct. 7, 202x+2

YEAR-3 On or about Sept. 15, 202x+3 Report due Oct. 7, 202x+3

YEAR-5 On or about Sept. 15, 202x+5 report due Oct. 7, 202x+5

Year 202x represents the year of implementation.

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VEGETATION MAINTENANCE PLAN

Maintenance of the onsite buffer area plant community may be required. Such maintenance shall be identified during the monitoring period and shall be undertaken at the direction of the project biologist. The overall objective is to establish undisturbed plant community that does not require maintenance. Activities may include, but are not limited to, the removal of invasive non-native vegetation and the irrigation of selected areas. Established maintenance activities include the removal of any trash within the onsite buffer area.

REMOVAL OF INVASIVE NON-NATIVE VEGETATION

As a contingency, should the removal of invasive non-native species become necessary, the project proponent would contact the City of Sumner to establish and define specific actions to be taken. Resultant contingency plan activities shall be implemented when the ongoing vegetation monitoring program indicates that invasive shrubs are becoming dominant in the onsite plant community (i.e. invasive species greater than 10% aerial coverage or any presence of knotweed). Reed canarygrass control methods shall also be undertaken and shall focus on removal of the vegetation at the ground level using line-trimmers for the first three years following initial planting. The objective is to allow the more desirable native species to become established and eventually shade the reed canarygrass. The project team shall employ a landscape contractor to perform the control of the reed canarygrass, as well at the removal of other invasive species. All removal actions shall also be monitored onsite by the project biologist. The objective of the reed canarygrass control is to limit the ability of this species to adversely impact more desirable species. The success or failure of the overall buffer restoration program is not dependent upon reed canarygrass comprising less than 10% of the plant community. The following invasive vegetation removal program shall be implemented to ensure the establishment of desirable plant communities. At the direction of the project biologist additional removal actions (if required) shall also be undertaken to ensure the establishment of desirable plant communities. The project proponent shall not be responsible for replacement of plants that may be removed or damaged by others.

MONITORING YEAR

FIRST REMOVAL ACTION

SECOND REMOVAL ACTION

THIRD REMOVAL ACTION

YEAR-1 On or about April 15, 202x+1

on or about June 1, 202x+1

on or about July 30, 202x+1

YEAR-2 On or about April 15, 202x+2

on or about June 1, 202x+2

on or about July 30, 202x+2

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YEAR-3 On or about April 15, 202x+3

on or about June 1, 202x+3

on or about July 30, 202x+3

YEAR-5 on or about June 1, 202x+5

on or about July 30, 202x+5

Year 202x represents the year of implementation.

CONTINGENCY PLAN

As a contingency, should the proposed Stream Corridor Buffer Establishment and Restoration Program fail to meet the performance criteria, the project proponent shall undertake required remedial actions. Where plant survival is the failing component, the project proponent shall replant and ensure the success of this second planting which would be held to the same standard of success as measured by threshold criteria and monitoring processes. Where non-native, invasive shrubs exceed 10% aerial coverage the project proponent shall undertake removal actions. Such removal actions shall be completed using hand tools or pulling the plants by hand to remove the invasive vegetation without disrupting the soil profile. All cut or pulled vegetation shall be removed from the onsite buffer area and disposed in an approved location. Herbicides shall only be used following approval by the City of Sumner. If used, all herbicide application shall be completed by a licensed professional. Should additional remedial actions be required, the project proponent shall meet with the City of Sumner to establish and define actions to be taken to meet the desired goal of this Stream Corridor Buffer Establishment and Restoration Program.

TEMPORARY IRRIGATION

The project proponent shall ensure that a minimum of one (1) inch of water is supplied each week to the onsite buffer area between May 1 and October 15 for a least the first two years following initial planting. The calculated amount of required water shall include both natural rainfall and temporary irrigation. The need for additional years of irrigation shall be determined based on site conditions and overall plant survival. The amount of water supplied to the onsite buffer area shall be increased if onsite monitoring defines such a need. Irrigation shall be provided via a temporary system placed on the ground surface within the buffer area or with optional hand watering. The system shall allow for a minimum of 10% overlap of coverage between sprinklers and the sprinklers shall be a minimum of four (4) feet above ground. The project team shall employ a landscape contractor to install, operate, and maintain the irrigation system. All actions shall also be monitored onsite by the project biologist.

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PLANTING NOTES

All plant materials utilized within the onsite buffer area shall be native to the Puget Sound Region. The onsite biologist shall inspect plant materials to assure the appropriate plant schedule and plant characteristics are met. The project proponent shall warrant that all plants would remain alive and healthy for a period of one year following completion of planting activities. The project proponent shall replace all dead and unhealthy plants with plants of the same specifications.

FINANCIAL GUARANTEE

The project proponent shall provide the City of Sumner a financial guarantee defined in two parts. Part One (Implementation Guarantee) shall be associated with the initial onsite elements of the buffer program. Part Two (Performance Guarantee) shall be associated with the maintenance and monitoring elements of the proposed buffer program. These guarantees shall be held by the City of Sumner and be equal to 120% of the actual estimated costs for identified activities. This increased percentage would allow for adequate funds to be available as a contingency should actions be required to meet the goals of these plans. The Implementation Guarantee shall be deemed to be released by the City of Sumner upon the successful completion of the initial onsite compensation elements and the acceptance by the City of Sumner. The Performance Guarantee shall be deemed to be released upon meeting the established threshold criteria and acceptance by the City of Sumner of the required reporting documents. If applicable, equivalent portions of the Performance Guarantee shall be released by the City of Sumner after each monitoring period.

Implementation Guarantee TASK ASSOCIATED COST

Mowing and removal of invasive vegetation and removal of debris. (24 hrs machine and 2-person crew at $150/hr.)

$ 3,600.00

Silt fencing and installation (appro. 650 linear feet x $5/ft) $ 3,250.00

Imported compost mulch and protective pads for planting $ 1,000.00

130 2-gallon trees with installation ($25.00/each) $ 3,250.00

258 1-gallon shrubs with installation ($12.50/each) $ 3,225.00

Onsite biologist technical oversight (12 hours at $120/hr) $ 1,440.00

Installation of a temporary irrigation system $ 2,500.00

Establishment of monitoring plots and production of Implementation Report (15 hrs at $120/hr).

$ 1,800.00

SUB-TOTAL $20,065.00

Required 20% contingency $4.013.00

IMPLEMENTATION GUARANTEE TOTAL $24,078.00

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Performance Guarantee

TASK ASSOCIATED COST

Year-One onsite monitoring with expenses Two times for plants (6 hrs at $100/hr) Hydrology monitoring Annual report with photos (3 hrs at $100/hr)

$ 2,575.00

Year-Two onsite monitoring with expenses Two times for plants (6 hrs at $110/hr) Hydrology monitoring Annual report with photos (3 hrs at $110/hr)

$ 2,750.00

Year-Three onsite monitoring with expenses One time for plants (3 hrs at $120/hr) Hydrology monitoring Annual report with photos (3 hrs at $120/hr)

$ 2,200.00

Year-Five onsite monitoring with expenses One time for plants (3 hrs at $120/hr) Annual report with photos (4 hrs at $120/hr)

$ 1,550.00

Temporary Irrigation Program One inch of water per week between June 1st and October 15th for years one and two.

$ 3,000.00

Invasive Vegetation Removal Four times (early March, early April, mid-June, mid-September) for years one, two, and three (each at 20 hrs, 2-person crew at $50/hr.)

$ 10,000.00

SUB-TOTAL $22,075.00

Required 20% contingency $ 4,415.00

PERFORMANCE GUARANTEE TOTAL $ 26,490.00

STANDARD OF CARE

This document has been completed by Habitat Technologies for use by Apex Engineers, Inc. Prior to extensive site planning this buffer program should be reviewed and approved by the City of Sumner and potentially other resource agency staff. Habitat Technologies has provided professional services that are in accordance with the degree of care and skill generally accepted in the nature of the work accomplished. No other warranties are expressed or implied. Habitat Technologies is not responsible for design costs incurred before this document is approved by the appropriate resource and permitting agencies. Bryan W. Peck Wetland Biologist

Thomas D. Deming, SPWS Habitat Technologies

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FIGURES

Legend

Select_TaxParcels

RoadsInterstateHighway

Highway Ramp

Limited AccessState Highway

Other StateHighway

Major Road

Arterial

Residential

Unknown

Tax ParcelsBase Parcel

Condominium

Other

CWI WetlandsUnconfirmed

Yes

No

PossibleWetlands

60TH ST E

158T

H AVE CT E

160T

H AVE E

164TH AVE C

T E

159T

H AVE E

SUMNER TAPPS HWY E

60TH ST E

MARCH LN

152N

D AVE E

156TH AVE CT E

BOCK AVE

153R

D AVE E

58TH ST E

154T

H AVE CT E

GRAHAM AVE

MAIN ST E

PARKER RD E

VALLEY AVE

MAIN ST

PARKER RD E

MAIN ST

LEWIS AVE

166TH AVE E

162N

D AVE E

54TH ST CT E

47TH ST E

52ND ST E

46TH ST CT E

44TH ST CT E

159TH AVE CT E

45TH ST CT E

168TH AVE E

55TH ST E

168TH AVE E

ELM ST E

44TH ST CT E

160T

H AVE E

160TH AVE E

47TH ST CT E

166TH AV

E CT E

46TH ST E

SUMNER TAPPS HWY E

44TH ST CT E

47TH ST CT E

EAST VALLEY HWY E

WRIGHT AVE

VALLEY AVE

48TH ST CT E

DAFFODIL ST CT E

153R

D AVE CT E

54TH ST CT E

VALLEY AVE

154T

H AVE CT E

VALLEY AVE

50TH ST CT E

157T

H AVE E

55TH ST CT E

53RD ST CT E

PUYALLUP ST

54TH ST CT E

50TH ST E

WRIGHT AVE

52ND ST E

157TH AVE CT E

ELM ST E

PUYALLUP ST

PARKER RD E

ELM ST

WASHINGTON

ST

154TH AVE CT EELM STELM ST E

152N

D AVE CT E

42ND ST E

SOUTH TA

PPS DR E

RIDGEW

EST DR E

166T

H AVE E

41ST ST E

163R

D AVE CT E

162ND AVE E

40TH ST E

164T

H AVE E

159TH AVE E

162N

D AVE E

43RD ST E

44TH ST E

41ST ST E

159TH AVE CT E

150TH AV

E CT E

EAST VALLE

Y HWY E

Figure 1 Site Vicinity

Date: 9/26/2019 04:28 PM

P.O.Box 1088Puyallup, WA 98371

(253) 845-5119 | www.habitattechnologies.net

0 530 1,060265

Feet

±The map features are approximate and are intended only to provide an indication of said feature. Additional areas that have not been mapped may be present. This is not a survey.

Orthophotos and other data may not align. The County assumes no liability for variations ascertained by actual survey. ALL DATA IS EXPRESSLY PROVIDED ‘AS IS’ AND ‘WITH ALL FAULTS’.The County makes no warranty of fitness for a particular purpose.

Habitat Technologies

1:12,000

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