Shorelands and Environmental Assistance Program

April 2019 Page 1

Public Notice: Proposed Certification for a Wetland Mitigation Bank in King County

Public Notice Date:

April 29, 2019

Comment Period Ends:

May 29, 2019

Send written comments to:

Kate Thompson Department of Ecology SEA Program P.O. Box 47600 Olympia, WA 98504-7600 kate.thompson@ecy.wa.gov

More information

A more detailed description of the project is available in the December 2018 Keller Farm Mitigation Bank Mitigation Banking Instrument at: https://ecology.wa.gov/Water-Shorelines/Wetlands/Mitigation/Wetland-mitigation-banking/Mitigation-bank-projects/Keller-Farm

Special accommodations

To request ADA accommodation including materials in a format for the visually impaired, call Ecology at 360-407-6572 or visit https://ecology.wa.gov/accessibility. People with impaired hearing may call Washington Relay Service at 711. People with speech disability may call TTY at 877-833-6341.

Overview The Washington Department of Ecology (Ecology) is considering certifying the Keller Farm Mitigation Bank in King County

Ecology is seeking public comment regarding a proposal to construct and operate a privately-owned 75-acre wetland mitigation bank in the city of Redmond. A wetland bank is a site where wetlands are restored, created, enhanced or preserved before unavoidable, authorized wetland losses occur. The Keller Farm Mitigation Bank (Bank) is designed to provide high-quality consolidated, watershed-based compensatory mitigation for sale to the general public.

Ecology will take public comments to evaluate state certification for the proposed bank from April 29 through May 29, 2019.

Location The proposed Bank is located in Redmond, immediately east of Avondale Road Northeast and north of Northeast Union Hill Road. The site is located on parcels 0125059051 and 0625069013 within portions of Section 1, Township 2 North, Range 5 East, and Section 1, Township 25 North, Range 5 East, Willamette Meridian. The Bank is located within King County. For the exact location, please see the attached project vicinity map (Figure A-1)

Applicant Habitat Bank 801 E. 1st St., Suite B107 Cle Elum, WA 98922

Shorelands and Environmental Assistance Program

April 2019 Page 2

Existing Conditions The proposed bank includes 1.7 acres of existing stream and riparian habitat (agricultural ditches), 7.9 acres of agricultural wetlands, and 65.6 acres of agricultural upland. The wetlands at the site were degraded due to historic farming and drainage activities.

Proposed Improvements The general goals of the Bank project are to restore site hydrology and floodplain connectivity to aquatic areas, increase habitat function and complexity for anadromous fish and other aquatic dependent wildlife, and re-establish wetland and riparian vegetation communities (Figure B-5, Site Design).

If the bank is approved and certified, the site would be permanently protected through a conservation easement. The Bank project would re-establish approximately 51 acres of wetland, rehabilitate 8 acres of wetland, rehabilitate 4 acres of stream channel and associated wetlands, and enhance 12 acres of riparian upland forest.

Proposed Service Area The proposed primary and secondary service areas where Bank wetland mitigation credits could be used is located within the Cedar-Sammamish Watershed (WRIA 8) (Figure E-1, Service Areas).

The primary service area is the Lake Sammamish Watershed boundary including those portions located in both King and Snohomish counties. Within this area, however, the Bank cannot be used to compensate for direct impacts to known or potential salmon-bearing streams unless specifically approved by the permitting agencies and reviewed by the Interagency Review Team (IRT).

The secondary service area includes additional portions of the Lake Washington Sub-basin located north of U.S. Interstate 90 including those portions located in both King and Snohomish counties, but not inside the incorporated boundary of Seattle and the small sub-basins that drain directly into Puget Sound. To see a list of the types of impacts that may be appropriately compensated at the Bank refer to Appendix E, Section E.1 of the Mitigation Banking Instrument.

Additional Information For more information about Washington’s wetland mitigation banking program: https://ecology.wa.gov/Water-Shorelines/Wetlands/Mitigation/Wetland-mitigation-banking

To receive updates about wetland mitigation banking in Washington or sign up for Ecology’s listserv: https://ecology.wa.gov/Water-Shorelines/Wetlands/Wetlands-overview

Comment and Review Period We will evaluate all public comments we receive by 5 p.m. on May 29, 2019, to determine whether it would be in the public interest to certify the Bank. Comments can be made by email or conventional mail to:

Kate Thompson Department of Ecology SEA Program P.O. Box 47600 Olympia, WA 98504-7600 kate.thompson@ecy.wa.gov To request a public hearing on the proposed bank certification submit your request in writing to Ecology before the end of the comment period. Any request for a public hearing must include the reason why a public hearing is warranted

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VICINITY AND SITE LOCATIONFIGURE: A-1

KELLER FARMMITIGATION BANK

Redmond, Washington

CITY OF REDMOND

WRIA 8Keller FarmMitigation Bank

Site Location

OCTOBER 2018

µ0 2,0001,000

Feet

0 10

Miles

µ

LEGENDCity LimitKeller Farm MitigationBank Boundary (75.2 Acres)

44

45

46

46

46

47

45

47

49

51

47

47

47

4548 49 49

5150

50 52 53

54

55

52

5050

5150

52 55

49

48

49

48

50

50

49

49

FUTURE PERRIGO

CREEK CONNECTION

BEAR CREEK

FLOODPLAIN

OVERFLOW

CONNECTIONS

FLOODPLAIN

CONNNECTION

BACKWATER CHANNEL

OUTLET OF

FLOODPLAIN

STREAMS

B

E

A

R

C

R

E

E

K

B

E

A

R

C

R

E

E

K

EV

AN

S C

RE

EK

BEAR CREEK AND

EVANS CREEK

CONFLUENCE

FUTURE LOCATION OF

DAYLIGHTED PERRIGO

CREEK (SCHEMATIC)

EXISTING

WATERMAIN

PERMANENT 20'

EASEMENT

100 ' BANK BUFFER (TYP.)

50' BANK BUFFER (TYP.)

EXISTING DAYLIGHT OF

PERRIGO CREEK INTO

AVONDALE DITCH

STORM SEWER NOT

SURVEYED

30' TRAIL

EASEMENT WITH

15-FOOT BUFFER

ON EACH SIDE.

FUTURE WALKING

TRAIL ALIGNMENT

TBD

MAINTAIN

EXISTING

TEMPORARY

ACCESS BRIDGE

NO CLEARING OR

GRADING IN THIS AREA

SITE DESIGN PLAN

B-5

NOTE:

SEE B-2 FOR LWD, BRUSH PILE,

PERCH POLE, AND DUCK NEST

INSTALLATION DETAILS

STREAM CHANNEL COMPLEX (IN BANK)

7,114 FT EXISTING LENGTH

12,276 FT PROPOSED LENGTH

BEAR CREEK AND PERRIGO CREEKS

BRUSH PILES (MIN 11)

PERCH POLES (MIN 9)

KEY LWD PIECE (MIN 52)

LWD COMPLEX (MIN 10)

BANK BOUNDARY (75.2 AC.)

BUFFER

EASEMENT

EXISTING CONTOUR

PROPOSED CONTOUR

RIFFLE WITH LWD (21) (NTS)

LWD COMPLEX (TYP.)

LEGEND

POOL AT STREAM

MEANDER (TYP.)

STREAM RIFFLE

(TYP.)

REGRADE

FLOODPLAIN

STREAM (TYP.)

N

E

A

V

O

N

D

A

L

E

R

O

A

D

100' BANK

BUFFER TYP.

WETLAND F =

0.94 ACRES

WETLAND G =

0.42 ACRES ON-SITE

1.07 ACRES OFF-SITE

WETLAND H =

1.15 ACRES

WETLAND E = 0.50 ACRES

WETLAND B =

0.55 ACRES

WETLAND C =

0.22 ACRES

WETLAND D = 2.34 ACRES

WETLAND A = 1.60 ACRES

EXISTING PERRIGO

CREEK

0250 500

Scale in Feet

WETLAND I = 0.18 ACRES

FLOODPLAIN CONNECTION,

BACKWATER CHANNEL

Seattle, Washington

(206) 632-8020 www.shannonwilson.com

KELLER FARM MITIGATION BANK

HABITAT BANK, LLC

SE 1/4 SEC. 1, T25N, R5E & SW 1/4 SEC. 6, T25N, R6E

APPROVED FOR CONSTRUCTION

________________________________________________

FOR: Linda E. De Boldt, P.E.Director of Public WorksCity of Redmond

Date: ______________________________________

Plan Chk Engr:________________________________Storm: __________________________________________

Utility: __________________________________________

Fire: ____________________________________________

Trans/Engr: ______________________________________

Planning: ________________________________________

This approval is for the design concept only. These plansappear to be in conformance with the City Of Redmond designstandards for construction. This approval shall not be construedas authorizing construction not in accordance with applicableCity standards. The City reserves the right to require revisionsto the approved plans to assure conformance with City ofRedmond design standards for construction at any time that it isdiscovered that the proposed construction does not otherwisemeet the applicable construction standards. The owner isrequired to provide designs and plans in accordance withapplicable City standards and assures that construction isaccomplished in accordance with those standards. The ownerand/or design engineer and/or developer may be required tomake necessary approved field revisions to correct any errors oromissions found on the approved plan.

P.O. BOX 354, KIRKLAND WA, 98083

(425) 205-0279

NEW HABITAT AREAS EXISTING ACREAGE

PROPOSED ACREAGE

CREDIT

AREAS

BUFFER EASEMENTS

46-54

RIPARIAN UPLAND FOREST (UPL) (ENHANCEMENT)

6.7 5.1 0.1

45-53

RIPARIAN FOREST WETLAND (PFD) (RE-ESTABLISHMENT)

17.5 1.5 0.1

44-53

SHRUB-SHRUB WITH EMERGENT WETLAND POCKETS (PSS/PEM)

(RE-ESTABLISHMENT)

28.7 2.8 0.5

44-50

RIPARIAN WETLAND/STREAM CHANNEL COMPLEX (PEM)

(REHABILITATION)

1.7 3.9 0.3 0.1

46-52

EXISTING WETLAND (PFO/PSS MIX) (REHABILITATION)

7.9 7.7 0.1 0.1

EXISTING GRASS UPLAND 65.6

BUFFER/EASEMENT SUBTOTAL 9.8 0.9

SUBTOTAL 75.2 64.5 9.8 0.9

BANK BOUNDARY 75.2 75.2

FLOODPLAIN

OVERFLOW

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Keller Farm Mitigation Bank Primary Service Area Description

The Primary Service Area consists of the Sammamish Watershed,

including portions of the watershed located in both King and Snohomish

Counties. Within the Primary Service Area, the Bank cannot be used to

compensate for direct impacts to known or potential salmonid-bearing

streams unless specifically approved by the permitting agencies and

reviewed by the IRT. In the absence of mapped or documented salmonid

presence, potential salmonid use will be assumed if the stream meets the

physical parameters for fish use described in Washington Administrative

Code (WAC) 222-6-031(3)()(I)(A-D) and (ii)(A-B), or as revised.

4/12/2019 4:24 PM S:\ELS\WA\King\County-Projects\1209-Habitat Banc\1209.17-Keller Farm Service Area\1209.17-Figures\1209.17_KSA-BW.dwg Jennifer

Keller Farm Mitigation Bank Secondary Service Area Description

The Secondary Service Area includes all additional portions of the Lake

Washington Sub-basin north of Interstate 90 (I-90) including those portions

located in both King and Snohomish Counties, but not including the political

boundaries of the City of Seattle and the small sub-basins that drain

directly into Puget Sound in Northern WRIA-8. The types of impacts in the

Secondary SA that may be appropriately compensated at the Bank include:

wetland buffer-only impacts, Category II, III, and IV Wetland impacts not

directly abutting salmonid-bearing streams, isolated wetlands, and

violations to those kinds of wetlands.

Other types of impacts in the Secondary SA may be allowed to be

compensated at the Bank on a case by case basis with approval by the

permitting agencies and review by the IRT.

SCALE IN MILES

0 3 6

Figure E-1

KELLER FARM MITIGATION BANK SERVICE AREAS

Primary and Secondary Service Areas

Legend

Primary Service Area

Secondary Service Area

Waterbodies

Streams

State Highways

Roads

Water Resource Inventory Area (WRIA)

Counties

City Limits

City of Seattle Limits

Keller Farm Mitigation Bank

Primary Service Area

Keller Farm Mitigation Bank

Secondary Service Area

Please contact bank sponsor for Google

Earth™ KMZ Service Area Boundary lines.