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Home My WebLink AboutD_Nisenna_Residential_SME_FINALDEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT D_Nisena Residential SME-V2 PLANNING DIVISION CERTIFICATE OF EXEMPTION FROM SHORELINE SUBSTANTIAL DEVELOPMENT EVALUATION FORM & DECISION DATE OF DECISION: June 16, 2022 PROJECT NUMBER: LUA22-000148, SME PROJECT NAME: Nisenna Residential Addition PROJECT MANAGER: Jill Ding, Senior Planner APPLICANT/CONTACT: Jonathan Brandt, JB Architecture 1122 NE 75th St, Seattle, WA 98115 OWNER: Sin and Min Lew 3101 Mountain View Ave N, Renton, WA 98056 PROJECT LOCATION: 3101 Mountain View Ave N, Renton, WA 98056 PROJECT DESCRIPTION: The applicant is requesting a Shoreline Exemption for the addition and remodel of an existing 2,940 sq. ft. two-story single-family residence and 750 sq. ft. detached garage. The proposed addition includes a 236 sq. ft. main floor addition between the residence and garage, a 750 sq. ft. second story addition the existing garage, and the construction of a 60 sq. ft. deck. The existing house is located between approximately 20 feet and 45 feet from the ordinary high-water mark (OHWM) of Lake Washington, within the 50-foot shoreline conservation buffer and 15-foot building setback from the buffer and is therefore subject to the Shoreline Non - Conforming Regulations (RMC 4-10-095F.2). A total of 108 sq. ft. of ground floor addition between the residence and garage would be located within the 15-foot building setback from the shoreline vegetation conservation buffer. All other additions would be located outside of the shoreline conservation buffer and building setback. As the proposal includes the expansion of the building footprint within the 15 -foot building setback, the applicant is proposing to revegetate at least 80% of the area between the existing building and the water’s edge with a native community. The project site totals 16,242 sq. ft. of upland area within the R -8 zone and is within the Shoreline Residential Designation of Lake Washington Reach E. SEC-TWN-R: SE31-24-05 DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 City of Renton Department of Community & Economic Development Certificate of Exemption From Shoreline Substantial Development Nisenna Residential Addition LUA22-000148, SME Permit Date: June 16, 2022 Page 2 of 3 D_Nisenna Residential SME_FINAL LEGAL DESCRIPTION: (King County Assessor) HILLMANS LK WN GARDEN OF EDEN # 1 POR OF LOTS 56-57 & 58 & OF ADJ 2ND CL SH LDS DAF BEG AT INTX OF S LN OF LOT 58 WITH GOV MDR LN TH S 80-13-02 W 42.78 FT TH N 72-03-18 W 99.44 FT TH S 89-50-57 W 190.56 FT TO INNER HARBOR LN TH N 23-40-00 E ALG SD HARBOR LN 52.76 FT TH N 89-50-57 E 219.38 FT TH S 75-24-20 E 83.14 FT TH S 61-50-30 E 22.86 FT TH N 89-50-57 E TO ELY LN OF BLK A TH SLY ALG SD ELY LN TO S LN OF LOT 58 TH S 89-50-57 W ALG SD S LN TO BEG TGW POR OF LOTS 57 & 58 & OF ADJ 2ND CL SH LDS DAF BEG AT INTX OF S LN OF LOT 58 WITH MDR LN TH S 80-13-02 W 42.78 FT TO TPOB TH N 72 -03-18 W 99.44 FT TH S 89-50-57 W 190.56 FT TO INNER HARBOR LN TH S 23-40-00 W ALG SD HARBOR LN TAP S 80-13-02 W FR TPOB TH N 80-13-02 E TO TPOB WATER BODY/REACH: Lake Washington, Reach E EXEMPTION JUSTIFICATION/DECISION: An exemption from a Shoreline Management Substantial Development Permit is hereby Approved with Conditions* on the proposed project in accordance with RMC.4.9190C “Exemption from Permit System’ and for the following reasons: Construction on shorelands by an owner, lessee or contract purchaser of a single-family residence for their own use or for the use of their family, which residence does not exceed a height of thirty-five feet (35’) above average grade level and which meets all requirements of the state agency or local government having jurisdiction thereof, other than requirements imposed pursuant to chapter 90.58 RCW. "Single-family residence" means a detached dwelling designed for and occupied by one family including those structures and developments within a contiguous ownership which are a normal appurtenance. An "appurtenance" is necessarily connected to the use and enjoyment of a single-family residence and is located landward of the ordinary high water mark and the perimeter of a wetland. On a statewide basis, normal appurtenances include a garage; deck; driveway; utilities; fences; installation of a septic tank and drainfield and grading which does not exceed 250 cubic yards and which does not involve placement of fill in any wetland or waterward of the ordinary high water mark. Local circumstances may dictate additional interpretations of normal appurtenances which shall be set forth and regul ated within the applicable master program. Construction authorized under this exemption shall be located landward of the ordinary high water mark. Staff Comment: The proposed remodel and addition to the existing single-family residence and garage would qualify as an Exemption from a Shoreline Substantial Development Permit under the construction of a single -family residence for the use of the owner or their family. A Lake Study and Revegetation Plan, prepared by Wetland Resources, Inc., dated May 31, 2022 was included with the project application materials. The submitted report included a mitigation planting plan that would revegetate 80% of the area between the building and shoreline with native vegetation. The report concludes that with the mitiga tion proposed, the proposed addition would result in no net loss of ecological functions an d values on the project site. FINDINGS: The proposed development is: i. Consistent with the policies of the Shoreline Management Act. ii. Consistent with the City of Renton Shoreline Mater Program. DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 City of Renton Department of Community & Economic Development Certificate of Exemption From Shoreline Substantial Development Nisenna Residential Addition LUA22-000148, SME Permit Date: June 16, 2022 Page 3 of 3 D_Nisenna Residential SME_FINAL *CONDITIONS OF APPROVAL: 1. Project construction shall comply with the recommendations outlined in the submitted Lake Study and Revegetation Plan including but not limited to planting trees and other native vegetation along the shoreline and implementing the Best Management Practices during construction. 2. The applicant shall also submit the planting plan as -builts and annual monitoring reports for five (5) to the City to ensure there is no net loss of ecolog ical functions. As-built plans shall be submitted prior to the release of a performance surety device. 3. A performance surety device shall be required prior to the issuance of a building permit for the installation of the proposed mitigation or the mitigati on plantings shall be installed prior to the issuance of a building permit. 4. A maintenance surety shall be required to ensure the mitigation performance standards are met. The surety device shall be sufficient to guarantee that structures, improvements, an d mitigation required by permit condition perform satisfactorily for a minimum of five (5) years after they have been completed. SIGNATURE & DATE OF DECISION: _____________________________________ ______________________________ Vanessa Dolbee, Planning Director Date RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by the approval body. The approval body may modify his decision if material evidence not readily discoverable prior to the original decision is found or if he finds there was misrepresentation of fact. After review of the reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within the 14-day appeal time frame. APPEALS: This administrative land use decision will become final if not appealed in writing to the Hearing Examiner on or before 5:00 PM on June 30, 2022. An appeal of the decision must be filed within the 14 -day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Due to the ongoing state of emergency enacted by Governor’s Proclamation 20-28.14 (and as amended), the City Clerk’s Office is working remotely. For that reason, appeals must be submitted electronically to the City Clerk at cityclerk@rentonwa.gov or delivered to City Hall 1st floor Lobby Hub Monday through Friday. The appeal fee, normally due at the time an appeal is submitted, will be collected at a future date if your appeal is submitted electronically. Appeals to the Hearing Examiner are governed by RMC 4-8-110 and additional information regarding the appeal process may be obtained from the City Clerk’s Office, cityclerk@rentonwa.gov. EXPIRATION: Two (2) years from the date of decision (date signed). Attachments: Lake Study and Revegetation Plan, Site Plan cc: Sin and Min Lew / Owners DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 6/16/2022 | 12:40 PM PDT LAKE STUDY AND REVEGETATION PLAN FOR NISENNA RESIDENCE CITY OF RENTON Wetland Resources, Inc. Project #21372 Prepared By Wetland Resources, Inc. 9505 19th Avenue SE, Suite 106 Everett, WA 98208 (425) 337-3174 Prepared For Sin Lew 3909 Lake Washington Blvd N Renton, WA 98056 Revision 2: May 31, 2022 RECEIVED 06/06/2022 JDing PLANNING DIVISION DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 ii TABLE OF CONTENTS 1.0 PROPOSED PROJECT ...................................................................................................................1 1.1 PROJECT LOCATION .......................................................................................................................... 1 1.2 LANDSCAPE SETTING ......................................................................................................................... 1 1.3 SITE DESCRIPTION ............................................................................................................................. 2 1.4 PROJECT DESCRIPTION ...................................................................................................................... 4 2.0 LAKE STUDY ...............................................................................................................................4 2.1 ASSESSMENT METHODOLOGY .......................................................................................................... 4 2.2 SITE-SCALE LAKE ASSESSMENT ........................................................................................................ 4 2.3 NO NET LOSS OF SHORELINE FUNCTIONS DISCUSSION ................................................................. 7 3.0 REVEGETATION PLAN ................................................................................................................7 3.1 REVEGETATION PLAN SUMMARY ...................................................................................................... 7 3.2 REVEGETATION PLANT SCHEDULE ................................................................................................... 8 3.3 PLANT INSTALLATION NOTES ........................................................................................................... 8 4.0 PROJECT MONITORING PROGRAM ..........................................................................................11 4.1 MONITORING SCHEDULE ................................................................................................................ 11 4.2 PROJECT SUCCESS STANDARDS ...................................................................................................... 12 4.3 PROJECT GOALS, OBJECTIVES, AND PERFORMANCE STANDARDS ................................................ 12 4.4 MAINTENANCE AND CONTINGENCY PLANNING ............................................................................ 13 5.0 USE OF THIS REPORT ..............................................................................................................14 6.0 REFERENCES ............................................................................................................................15 LIST OF FIGURES - AERIAL VIEW OF THE SUBJECT PROPERTY (NOT TO SCALE). ........................................1 - LANDSCAPE-SCALE VICINITY MAP (GOOGLE MAPS) ....................................................2 - BING MAPS BIRD’S EYE VIEW .......................................................................................3 - EXISTING SITE CONDITON. FACING SW TOWARDS LK WASHINGTON. .......................5 - EXISTING SITE CONDITON. FACING NE TOWARDS THE RESIDENCE. ...........................6 LIST OF APPENDICES APPENDIX A: LAKE STUDY AND REVEGETATION PLAN MAPS DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 1 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 1.0 PROPOSED PROJECT 1.1 PROJECT LOCATION The project occurs on King County Tax Parcel 3342103895. This is a 0.87-acre parcel, located at 3101 Mountain View Avenue N in the City of Renton. Access to the property is from the east via Mountain View Avenue N. The Public Land Survey System Locator is Section 31, Township 24N, Range 5E, WM. - Aerial view of the subject property (Not to Scale). 1.2 LANDSCAPE SETTING Basin: Puget Sound Sub-Basin: Water Resource Inventory Area (WRIA) 8 – Cedar River/Renton River Watershed: Lake Washington Watershed DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 2 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 - Landscape-Scale Vicinity Map (Google Maps) The study area is located on the east shore of Lake Washington, the second-largest natural lake in Washington State with a total surface area of over 22,000 acres. The lake is approximately 20 miles in total length, with an average width of 1.5 miles (Kerwin, 2001). Lake Washington is highly developed along much of the approximately 50 miles of lake shoreline. 1.3 SITE DESCRIPTION The subject property is immediately surrounded to the north and south by residential development, to the east by Mountain View Avenue N and to the west by Lake Washington. An existing house, detached garage, driveway, and deck cover the majority of the property. Between DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 3 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 the house and the shoreline of the lake, the backyard consists of maintained lawn and a few ornamental shrubs. Existing development along the lake’s shoreline is limited to the existing bulkhead and rockery. The face of the bulkhead clearly defines the ordinary high water mark (OHWM) of Lake Washington. No vegetation is present waterward of the OHWM and no aquatic vegetation or lake- fringe wetlands were observed. Beach substrate consists of sorted sand and large cobble pieces on a moderate grade. This is consistent with a high-energy shoreline. No other habitat features were observed on or in the vicinity of the subject property. - Bing Maps Bird’s Eye View DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 4 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 1.4 PROJECT DESCRIPTION The applicant proposes to remodel the existing residence, construct a second story over the existing garage, and expand the back door deck. New impervious surfaces are proposed but do not exceed the allowed maximum of 50% (RMC 4-3-090D.7.a.11). The ground footprint of the existing residence will not be changed and will be no closer to the shoreline. The back door deck will expand south and no closer to the shoreline. The proposed addition area is between the existing residence and garage, which currently consists of a few ornamental shrubs. A portion of the existing residential development is considered nonconforming because it is in the 50-foot vegetation conservation buffer and 15-foot building setback. RMC 4-10-095 regulates nonconforming uses and allows the applicant’s proposed development as a “moderate alteration” because the expansion occurs in the 15-foot building setback. This project meets the “80% revegetation between an existing building and the water’s edge” standard of RMC 4-10-095F.2. See section below titled Revegetation Plan. Given that all components of the proposed project will be outside the shoreline buffer (50 feet), the majority of work will be landward of the existing primary structure, and because the applicant has provided a significant native revegetation plan, no net loss of shoreline ecological function will occur. The City of Renton’s Shoreline Master Program (SMP) requires applicants proposing shoreline modifications on existing legal lots to provide a Stream or Lake Study that meets the requirements of RMC 4-8-120D.19. This study was designed to meet that requirement. 2.0 LAKE STUDY 2.1 ASSESSMENT METHODOLOGY Field Investigation Senior Ecologist, Niels Pedersen, PWS, conducted a site investigation on January 6, 2022. Limit of Study The proposed project occurs on tax parcel (tax ID number 3342103895). Lack of legal access to adjacent parcels prevents Wetland Resources, Inc. (WRI) staff from performing detailed investigation in surrounding areas. Therefore, this investigation involved a site visit to the subject property and evaluation of existing on-line information, include the USFWS National Wetlands Inventory (NWI), USDA/NRCS Web Soil Survey, WDFW SalmonScape Interactive Map, WDFW Priority Habitat and Species (PHS) Interactive Map, and King County iMap. 2.2 SITE-SCALE LAKE ASSESSMENT Lake Washington, a Type S water, is the only aquatic critical area located on and near the subject property. The western portion of the property includes a concrete bulkhead, with a rockery above, along Lake Washington. The majority of vegetation in the western portion of the property consists DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 5 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 of maintained lawn and ornamental shrubs. Additional ornamental plantings border the southern and eastern sides of the residence. A few significant trees are located along the southern property boundary. The remaining portions of the property consist of impervious surfaces which include the single-family residence, garage, concrete and gravel walkways, and access driveway. - Existing site conditon. Facing SW towards Lk Washington. Existing Shoreline Ecological Functions The rock bulkhead deflects wave energy, which can cause erosion that leads to deeper water along the shoreline. High-energy/deepwater shorelines do not provide refuge opportunities for migrating fish. Bulkheads also prevent the establishment of riparian vegetation, which provides cover and forage opportunities for juvenile salmon. The absence of overhanging vegetation limits the ecological value for migrating fish. The existing impervious surface also limits the establishment of native vegetation, reducing the overall ecological value of this shoreline. Due to the mostly high-energy shoreline, lack of riparian vegetation, and presence of impervious surface within the shoreline buffer, shoreline ecological functions are limited within the subject property. DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 6 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 - Existing site conditon. Facing NE towards the residence. Fish and Wildlife Presence No fish or wildlife species were directly observed during the site investigation. The Washington Department of Fish and Wildlife (WDFW), Pacific States Marine Fisheries Commission (PSMFC), and the Washington Dept. of Natural Resources (WADNR) are the primary agencies that provide publicly available information used for making fish presence determinations consistent with the water typing rules set forth in WAC 222-16-030. The following information represents the findings from each source. WDFW SalmonScape Map Tool SalmonScape is an online GIS database that contains publicly available resource information for fish population studies and general species distribution (both documented and modeled presence). Within Lake Washington, the following species are depicted: • Fall Chinook (documented presence), • Coho (documented presence), • Winter Steelhead (documented presence), • Sockeye (documented presence), • Bull Trout (documented rearing), • Kokanee (documented presence) DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 7 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 PSMFC StreamNet Map Tool StreamNet is a fish distribution database maintained by the PSMFC as a regional clearinghouse for fish data. In the vicinity of the project area, fish presence is only depicted within Lake Washington. StreamNet states the presence of the following species: • Fall Chinook (migration only) • Coho (migration only) • Sockeye (migration only) • Winter Steelhead (migration only) • Bull Trout (migration only) WDNR Forest Practices Activity Mapping Tool (FPAMT) FPAMT is an online GIS database that aids the process of submitting a Forest Practices permit application. The tool is useful for the purposes of this study because WDNR models fish presence. FPAMT depicts Lake Washington as a fish-bearing shoreline of the state. No other features are noted in the vicinity of the project. WDFW Priority Habitat and Species (PHS) Maps No terrestrial priority habitats are listed on or near the site. Aquatic priority habitats for the above- listed species are noted on the PHS maps. 2.3 NO NET LOSS OF SHORELINE FUNCTIONS DISCUSSION The existing development along the shoreline provides limited ecological value due to its developed and maintained condition. Given the location of the improvements outside the shoreline buffer and adjacent to existing residential structures, construction is not expected to cause any temporary or permanent impacts to the existing ecological function of the lake. Given the lack of existing shoreline functions, the isolated location of the improvement, and the applicant’s revegetation plan, no net loss of shoreline ecological function is expected. 3.0 REVEGETATION PLAN 3.1 REVEGETATION PLAN SUMMARY Due to proposed re-development in the 15-foot building setback, 80% of the area between the existing building and the water’s edge is required to be revegetated pursuant to RMC 4-10-095F.2. The proposed planting plan will increase diversity and density of native plants near the shoreline of Lake Washington, which will improve wildlife habitat. Relative to proposed site development, this planting plan will result in a significant uplift in shoreline ecological functions. DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 8 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 3.2 REVEGETATION PLANT SCHEDULE Shoreline Revegetation Plan (924 square feet) Common Name Latin Name Size Quantity shore pine Pinus contorta 1 gallon 1 Pacific dogwood Cornus nuttallii 1 gallon 1 mock orange Philadelphus lewisii 1 gallon 3 red flowering currant Ribes sanguineum 1 gallon 2 goat’s beard Aruncus dioicus 1 gallon 3 bush cinquefoil Potentilla fruticosa 1 gallon 3 salal Gaultheria shallon 1 gallon 5 beach strawberry Fragaria chiloensis 4” pot 48 kinnikinnick Arctostaphylos uva-ursi 4” pot 51 3.3 PLANT INSTALLATION NOTES Installation Timing All planting shall occur between November 1 and March 1. Plants installed earlier in the dormant period have more time to adapt to the site and extend their root systems before the water demands of spring and summer. Receipts for installation materials shall be made available to the City as requested. The origin of all plant materials specified in this plan shall be native plants, nursery grown in the Puget Sound region of Washington. Some limited species substitution may be allowed, only with the agreement of the project biologist. Pre-Planting Meeting Prior to installation of the above plants, a site meeting shall occur to resolve any questions that may arise. The meeting should be attended by the property owner, project biologist, and installer. The objective will be to discuss site preparation, planting location, and to assess plant stock. Site Inspection The project biologist shall be contracted to periodically inspect the planting area described in this plan. Minor adjustments to the original design may be necessary prior to and during construction due to unusual or hidden site conditions. A City representative and/or the consulting professional will make these decisions during construction. Any deviations from the approved plan shall be noted in the project as-built report. Weeding Existing and exotic vegetation in the planting area will be removed by hand at the time of installation and on a routine basis throughout the monitoring period. No chemical control of vegetation on any portion of the site is recommended. Handling Plants shall be handled so as to avoid all damage, including: breaking, bruising, root damage, sunburn, drying, freezing or other injury. Plants must be covered during transport. Plants shall not be bound with wire or rope in a manner that could damage branches. Protect plant roots with shade and wet soil in the period between delivery and installation. Do not lift container stock by DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 9 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 trunks, stems, or tops. Do not remove plants from containers until ready to plant. Water all plants as necessary to keep moisture levels appropriate to the species horticultural requirements. Plants shall not be allowed to dry out. All plants shall be watered thoroughly immediately upon installation. Soak all containerized plants thoroughly prior to installation. Storage Plants stored for longer than one month prior to planting shall be planted in nursery rows and treated in a manner suitable to those species’ horticultural requirements. Plants must be re- inspected by the project biologist prior to installation. Damaged plants Damaged, dried out, or otherwise mishandled plants will be rejected at installation inspection. All rejected plants shall be immediately removed from the site. Plant Names Plant names shall comply with those generally accepted in the native plant nursery trade. Any question regarding plant species or variety shall be referred to the project biologist. All plant materials shall be true to species and variety and legibly tagged. Plant Stock Requirements Plants shall be normal in pattern of growth, healthy, well-branched, vigorous, with well-developed root systems, and free of pests and diseases. Damaged, diseased, pest-infested, scraped, bruised, dried out, burned, broken, or defective plants will be rejected. Plants with pruning wounds over 1-inch in diameter will be rejected. Roots All plants shall be balled and burlapped (B &B) or containerized, unless explicitly authorized by the project biologist. Rootbound plants or B&B plants with damaged, cracked, or loose rootballs (major damage) will be rejected. Immediately before installation, plants with minor root damage (some broken and/or twisted roots) must be root-pruned. Matted or circling roots of containerized plantings must be pruned or straightened and the sides of the root ball must be roughened from top to bottom to a depth of approximately half an inch in two to four places. Bare root plantings of woody material are allowed only with permission from the project biologist and/or City staff. Sizes Plant sizes shall be the size indicated in the plant schedule. Larger stock may be acceptable provided that it has not been cut back to the size specified, and that the root ball is proportionate to the size of the plant. Smaller stock may be acceptable, and preferable under some circumstances, based on site-specific conditions. Measurements, caliper, branching, and balling and burlapping shall conform to the American Standard of Nursery Stock by the American Association of Nurserymen (latest edition). Form Evergreen trees shall have single trunks and symmetrical, well-developed form. Deciduous trees shall be single trunked unless specified as multi-stem in the plant schedule. Shrubs shall have multiple stems and be well-branched. DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 10 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 Site Conditions The contractor shall immediately notify the project biologist of drainage or soil conditions likely to be detrimental to the growth or survival of plants. Planting operations shall not be conducted under the following conditions: freezing weather, when the ground is frozen, excessively wet weather, excessively windy weather, or in excessive heat. Planting Pits Planting pits shall be circular or square with vertical sides and shall be 6” deeper and 12” larger in diameter than the root ball of the plant. Break up the sides of the pit in compacted soils. Set plants upright in pits. Burlap shall be removed from the planting pit. Backfill shall be worked back into holes such that air pockets are removed without adversely compacting down soils. Fertilizer Slow-release fertilizer may be used if pre-approved by City of Renton staff. Fertilizers shall be applied only at the base of plantings underneath the required covering of mulch (that does not make contact with stems of the plants). No soil amendment or fertilizers will be placed in planting holes. Staking Most shrubs and many trees DO NOT require any staking. Do not use a stake if the plant can stand alone without staking in a moderate wind. If the plant needs support, strapping or webbing should be used as low as possible on the trunk to loosely brace the tree with two stakes. Do not brace the tree tightly or too high on the trunk. If the tree is unable to sway, it will further lose the ability to support itself. Do not use wire in a rubber hose for strapping as it exerts too much pressure on the bark. Remove the stakes as soon as supporting the plant becomes unnecessary. All stakes must be removed within two (2) years of installation. Plant Location Colored ribbon or other appropriate marking shall be attached to the installed plants to assist in locating the plants while removing the competing non-native vegetation and during the monitoring period. Arrangement and Spacing The plants shall be arranged in a pattern with the appropriate numbers, sizes, species, and distribution that are required in accordance with the approved plans. The actual placement of individual plants is intended to mimic natural, asymmetric vegetation patterns found on similar undisturbed sites in the area. Spacing of the plantings may be adjusted to maintain existing vegetation with the agreement of the project biologist and/or City staff. Inspection(s) The project biologist shall be present to inspect the plants prior to planting. Minor adjustments to the original design may be required prior to and during construction. Woodchip Mulch The planting area shall receive no less than 2 to 4 inches of certified woodchip mulch after planting, except in the vicinity of proposed groundcover. A layer of woodchip mulch will be placed around DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 11 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 the base of each plant in a 3-foot radius and at a depth of 2 to 4 inches. To avoid plant decay and rot, woodchip mulch shall not be in contact with plant stems. 4.0 PROJECT MONITORING PROGRAM 4.1 MONITORING SCHEDULE 1. Initial compliance/as-built report 2. Semi-annual site inspection (in the spring and in the fall) for years 1-3 3. Annual site inspection (in the fall) for years 4-5 4. Annual reports including final report (one report submitted in the fall of each monitored year) Purpose for Monitoring The purpose for monitoring this project shall be to evaluate its success. Success will be determined where monitoring reports show that the performance standards stated below are met in year five. The property owners shall grant access to the planting area for inspection and maintenance to the contracted landscaper, project biologist, and City staff during the monitoring period bond or until the project is considered successful. Monitoring Methodology During the as-built site visit, at least four representative photopoints will be selected. Photos shall be taken from the same location during each monitoring year to establish a record of plant growth throughout the monitoring period. The location of permanent photopoints shall be depicted graphically in the as-built report, and Year 0 photographs shall be included in the as-built letter. To ensure successful establishment of new plants, vegetation sampling and definitions of success will be based on a qualitative assessment of survivorship, invasive species cover, and total areal cover. This is an appropriate methodology given the high probability of successful establishment in a residential yard that will be regularly maintained by professional landscapers. Survivorship shall be documented in each annual report. All dead plants shall be removed and replaced with the same species unless an alternate species is recommended by the project biologist. Maintenance shall occur immediately following any monitoring report documenting the presence of invasive species. Monitoring Report Contents Annual monitoring reports shall be submitted by October 31 of each year during the monitoring period. As applicable, monitoring reports must include descriptions / data for: 1. Site plan and vicinity map, 2. Historic description of project, including date of installation, current year of monitoring, restatement of restoration goals and performance standards, 3. Plant survival for all installed plants, 4. Monitoring methodology in the context of assessing performance standards, 5. Assessment of nuisance / exotic biota and recommendations for management, 6. Color photographs taken from permanent photopoints. DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 12 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 4.2 PROJECT SUCCESS STANDARDS Upon installation of the proposed planting plan by the contracted landscaper, an inspection by the project biologist will be made to document correct installation. A compliance letter will be supplied to the City for review within 30 days after successful completion of planting. City review and acceptance of the as-built letter is required prior to commencement of the five-year monitoring period. The project biologist will perform biannual monitoring of the plantings (in the spring and fall) for the first three years, and annual monitoring (in the fall) for years four and five. A written report describing the monitoring results will be submitted to the City after the fall site inspection of each monitored year. Final inspection will occur five years after completion of this project unless performance standards are not met in year five. The project biologist will prepare a final report after all performance standards have been met. If the project does not meet the performance standards below in year five, annual monitoring and maintenance shall continue until the project meets all performance standards. 4.3 PROJECT GOALS, OBJECTIVES, AND PERFORMANCE STANDARDS Environmental goals, objectives, and performance standards have been established to provide an objective measure of success for this project. The primary environmental goal for this project is to improve in-water habitat conditions for aquatic species. To achieve this goal, the primary objective is to install native vegetation along the OHWM that can provide future sources of woody debris, and to create conditions that will increase diffuse over-water shade. A secondary environmental goal is to improve forage habitat for avian species. To achieve this goal, diverse native species that provide habitat value will be installed within the VEA. The following Performance Standards shall be the basis for determining project success. Year 1 Performance Standards 100 percent survival of installed native species No coverage by invasive species Year 3 Performance Standards 90 percent survival of installed native species No coverage by invasive species New growth shall be observable and documented (relative to year 1) >40% Areal Cover Year 5 Performance Standards 90 percent survival of installed native species No coverage by invasive species >60% Areal Cover New growth shall be observable and documented (relative to year 3) DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 13 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 4.4 MAINTENANCE AND CONTINGENCY PLANNING Maintenance Plan This revegetation project may require replacement of installed species that have died. Maintenance is also necessary to control invasive, non-native plant species and competing grasses. The planting areas shall be maintained in the spring of each year of the monitoring period, and again in the fall if recommended by the project biologist. Maintenance will include hand removal of competing grasses and non-native vegetation from a two-foot-diameter ring surrounding all installed plants. Removal of invasive species shall be done by hand to decrease the likelihood of damage occurring to the plantings. All blackberry, Japanese knotweed, scotch broom, reed canarygrass, and other aggressive invasive species sprouting anywhere on-site within twenty feet of the planting area shall be removed during each maintenance period. Invasive species removal shall follow guidance outlined by the King County Noxious Weed Control Program. Herbicide use is prohibited. Following each monitoring site visit, recommendations will be made for replacement of dead plants and other general maintenance. All maintenance recommendations related to invasive cover shall be addressed within 45 days of the date written on the annual report requiring action, and the City shall be supplied with a follow-up letter documenting how these recommendations were addressed. If necessary, re-planting shall occur in the late fall. A brief memo will be drafted and submitted to the City indicating that re-planting efforts were successful. Contingency Plan If more than 20% of installed plants are severely stressed during any of inspection, additional plantings of the same or alternative species may be added to the planting area. A meeting with the project biologist and the property owner will be scheduled to decide upon contingency plans if this situation persists into the next inspection. Elements of the contingency plan may include more aggressive weed control, plant mortality replacement, re-location, species substitution, fertilization, and/or soil amendments. DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 14 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 5.0 USE OF THIS REPORT This Lake Study and Revegetation Plan is supplied to Sin Lew as a means of demonstrating RMC compliance as required by the City of Renton during the permitting process. This report is based largely on readily observable conditions and, to a lesser extent, on readily ascertainable conditions. No attempt has been made to determine hidden or concealed conditions. The laws applicable to salmonid habitat are subject to varying interpretations and may be changed at any time by the courts or legislative bodies. This report is intended to provide information deemed relevant in the applicant's attempt to comply with the laws now in effect. The work for this report has conformed to the standard of care employed by ecologists. No other representation or warranty is made concerning the work or this report and any implied representation or warranty is disclaimed. Wetland Resources, Inc. Alia Richardson Associate Ecologist & Wildlife Biologist DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Nisenna Residence 15 Lake Study and Revegetation Plan WRI #21372 Revision 2: May 31, 2022 6.0 REFERENCES Anderson et al. 2016. Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State. WA Department of Ecology. Publication #16-06-029. Kerwin, J. 2001. Salmon and Steelhead Habitat Limiting Factors Report for the Cedar – Renton Basin (Water Resource Inventory Area 8). Washington Conservation Commission. Olympia, WA. http://www.pugetsoundnearshore.org/supporting_documents/WRIA_8_LFR_FINAL.p df. Accessed January 2022. NOAA. 2022. National Weather Service Forecast Office, Seattle, Washington. http://www.weather.gov/climate/index.php?wfo=sew. Accessed January 2022. StreamNet. 2022. StreamNet Mapper. http://www.streamnet.org/mapping_apps.cfm. Accessed January 2022. U.S. Fish & Wildlife Service (USFWS). 2022. National Wetlands Inventory (NWI) Online Mapper. http://www.fws.gov/wetlands/Data/Mapper.html. Accessed January 2022. Washington State Department of Fish and Wildlife (WDFW).2022a. Priority Habitats and Species: PHS on the Web. http://wdfw.wa.gov/mapping/phs/. Accessed January 2022. WDFW. 2022b. SalmonScape Online Mapping Application. http://apps.wdfw.wa.gov/salmonscape/map.html. Accessed January 2022. DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 APPENDIX A: LAKE STUDY AND REVEGETATION PLAN MAPS DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 LAKE STUDY AND REVEGETATION PLAN MAPS NISENNA RESIDENCE SITE PLAN AND PROJECT IMPACTS Delineation / Mitigation / Restoration / Habitat Creation / Permit Assistance 9505 19th Avenue S.E. Suite 106 Everett,Washington 98208 Phone: (425) 337-3174 Fax: (425) 337-3045 Email: mailbox@wetlandresources.com Date: 5/31/2022 Nisenna Residence Site Plan and Project Impacts Lake Study and Mitigation Plan Maps Drawn by: NP Project # 21372 Sheet 1/2Sin Lew 3909 Lake WA Blvd Ln Renton, WA 98056 MOUNTAIN VIEW DR(SITE ACCESS)LEGEND Scale 1" = 20' 2010 30 400 ORDINARY HIGH WATER MARK (OHWM) LAKE WASHINGTON TYPE S 15' BUILDING SETBACK PROPOSED ALTERATION EXISTING CONCRETE EXISTING GRAVEL EX. SFR EX. GARAGE EX. GRAVEL DRIVEWAY EX. CONCRETE WALKWAY EX. GRAVEL WALKWAY EX. 2ND FLOOR DECK PROPOSED ADDITION 22 SF PROPOSED DECK 60 SF OHWM OF LAKE WASHINGTON 34' 6.5'15'15'3' 6.5'15'34'15'3'18'18'4' 4' 30' 30'25'25'12'5'VEGETATION CONSERVATION BUFFER PARCEL #3342103895 PARCEL #3342103890 5 0' 18' EX. ROCKERY PROPOSED ADDITION 236 SF EXISTING FOUNDATION PROPOSED SETBACK INTRUSION 121 SF EX. CONCRETE SLAB PROPOSED SETBACK INTRUSION 1 5' 15' BUILDING SETBACK 50' VEGETATION CONSERVATION BUFFER DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 Common Name Latin Name Size Quantity shore pine Pinus contorta 1 gallon 1 Pacific dogwood Cornus nuttallii 1 gallon 1 mock orange Philadelphus lewisii 1 gallon 3 red flowering currant Ribes sanguineum 1 gallon 2 goat’s beard Aruncus dioicus 1 gallon 3 bush cinquefoil Potentilla fruticosa 1 gallon 3 salal Gaultheria shallon 1 gallon 5 beach strawberry Fragaria chiloensis 4” pot 48 kinnikinnick Arctostaphylos uva-ursi 4” pot 51 LAKE STUDY AND REVEGETATION PLAN MAPS NISENNA RESIDENCE VEGETATION CONSERVATION BUFFER REVEGETATION PLAN Delineation / Mitigation / Restoration / Habitat Creation / Permit Assistance 9505 19th Avenue S.E. Suite 106 Everett,Washington 98208 Phone: (425) 337-3174 Fax: (425) 337-3045 Email: mailbox@wetlandresources.com Date: 5/31/2022 Nisenna Residence Revegetation Plan Lake Study and Mitigation Plan Maps Drawn by: NP Project # 21372 Sheet 2/2Sin Lew 3909 Lake WA Blvd Ln Renton, WA 98056 LAKE WASHINGTON TYPE S SFR GARAGE GRAVEL DRIVEWAY LAKE WA OHWM 5 0' ROCKERY 1 5' 15' BUILDING SETBACK 80% REVEGETATION AREA 50' VEGETATION CONSERVATION BUFFER AREA BETWEEN EXISTING BUILDING AND WATER'S EDGE MODERATE ALTERATION COMPLIANCE SUMMARY TOTAL AREA BETWEEN EXISTING BUILDING AND WATER'S EDGE PROPOSED REVEGETATION AREA 1,154 SF 924 SF Scale 1" = 20' 2010 30 400 INSET 1 Inset Scale 1" = 10' 105 15 200 INSET 1 OHWM ROCKERY GRAVEL MAP LEGEND OHWM 15' BUILDING SETBACK AREA BETWEEN BUILDING AND WATER'S EDGE CONCRETE FOUNDATION WALL 80% REVEGETATION AREA VEGETATION CONSERVATION BUFFER REVEGETATION PLANTING PLAN (924 SF) PACIFIC DOGWOOD SHORE PINE GOAT'S BEARD MOCK ORANGE SALAL BEACH STRAWBERRY KINNIKINNICK OREGON GRAPE RED FLOWERING CURRANT PLANT LEGEND PACIFIC DOGWOOD SHORE PINE GOAT'S BEARD MOCK ORANGE SALAL BEACH STRAWBERRY KINNIKINNICK BUSH CINQUEFOIL RED FLOWERING CURRANT PLANT LEGEND DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3 RECEIVED 06/06/2022 JDing PLANNING DIVISION DocuSign Envelope ID: 4F3332FA-52D1-429C-A882-1C83E0A8E8D3