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Home My WebLink AboutP_2024-04-18 AB_Renton Talbot_Honey Dew_ 2023 Puget Sound Energy P.O. Box 97034 Bellevue, WA 98009-9734 PSE.com April 18, 2024 Jill Ding, Senior Planner Renton City Hall, 6th Floor 11055 South Grady Way Renton, WA 98057 RE: As Built for Energize Eastside, Renton Segment – Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan (LUA 18-000055, CU-H, SME) Dear Ms. Ding: Puget Sound Energy, Inc. (PSE) provides the following as built document for the Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan. PSE will submit the First Quarter 2024 monitoring report to the City in a few weeks. Please let us know if you have any questions. Sincerely, Karen Worcester Municipal Land Planner Enclosure cc: Brad Strauch, PSE As Built for Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan, 2023 1 AS BUILT FOR ENERGIZE EASTSIDE, CITY OF RENTON – Talbot Mitigation Site, 2023 Conditional Use Permit: LUA 18-000055, CU-H, SME Construction Permit: C20002903 PSE CONTACT: Stan Haralson, PSE Vegetation Management, 253-905-4432 MITIGATION COORDINATOR: Cate Burnett-Vegetation Management,-Asplundh Tree Experts, 206-718- 8216 PLANT INSTALLATION CONTRACTOR: Ezra Hedblom-Monarch Landscape Company, 425-864-5988 INSTALLATION TIMEFRAME: Fall/winter 2023-2024 PLANTING AREA: Location Parcel number: 2023059003 / Lake Youngs Way SE Renton, WA Project Description: Within the City of Renton, PSE’s Energize Eastside Project upgraded approximately 4 miles of two existing 115 kV transmission lines to 230 kV transmission lines. A total area of approximately 9,500 SF of degraded buffer has been enhanced on the Talbot Mitigation Site. The enhancement areas include invasive species removal and installation of native trees, shrubs, and groundcover plants. Tree and shrubs species were chosen for compatibility with PSE powerline infrastructure. PERFORMANCE STANDARDS: Survival Standards • 100% survival of all woody vegetation at the end of year 1, starting from the date of substantially complete installation. This standard may be met through the establishment of installed plants or by replanting as necessary to achieve the required numbers. • 80% survival of all installed woody vegetation at the end of year 2. This standard may be met through the establishment of installed plants or by replanting as necessary to achieve the required numbers. • Survival beyond year 2 is difficult to track. Therefore, diversity and cover standards are proposed in place of survival. Native Vegetation Cover in Planted Area: • Achieve at least 60% cover of native shrubs by the end of year 3. Transmission line-friendly volunteer species may count toward this standard. • Achieve at least 80% cover of native shrubs by the end of year 5. Transmission line-friendly native volunteer species may count toward this standard. As Built for Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan, 2023 2 Species Diversity in Planted Areas: • Establish at least four native species by year 5. Transmission line-friendly native volunteer species may count toward this standard. “Establishment” is considered to be at least four healthy, individual plants of a given species present within the mitigation areas. Invasive Species Standard: • No more than 20% cover of invasive species in the planting area in any monitoring year, except shall not exceed 10% cover at the end of year 5. Invasive species are defined as any Class A, B or C noxious weeds as listed by the King County Noxious Weed Control Board. MONITORING STATIONS: Three permanent monitoring stations have been established within the mitigation sites. Each location was marked with a stake and flagging. Photos will be taken from the center of the stake. Counts of both dead and live plants will be conducted for each species. • PPT 1: 47.2816N/122.1111W (400 SF) • PPT 2: 47.2817N/122.1111W (400 SF) • PPT 3: 47.2818N/122.1109W(400 SF) MONITORING REPORTS & SCHEDULE: Monitoring reports will be submitted to Jill Ding, City of Renton Senior Planner, on an annual basis for years 1-5. • As Built Report – submitted at completion of installation project and upon final inspection approval by the City of Renton. • For the first year following installation, monitoring reports shall be submitted quarterly to the City. Thereafter, annual reports shall be submitted at the end of the growing season (years 2-5.) • Reports will be submitted to PSE and the City of Renton. CONTINGENCY PLAN: • Additional plants may be installed to bring numbers up to the required percentage goals. Installations will occur during October 15 – March 1. • To deter wildlife browsing a perimeter fence was installed. MAINTENANCE: Mitigation plan areas shall be maintained for five years following completion of the initial plant and seed installation. Routine maintenance of Talbot planting areas: • At least twice yearly, remove by hand all competing weeds and weed roots from beneath each installed plant and any desirable volunteer vegetation to a distance of 12 inches from the main plant stem. Weeding should occur as needed during the spring and summer. Frequent weeding will result in lower mortality and lower plant replacement costs. • Do not weed the area near the plant bases with a string trimmer (weed whacker). Native woody plants are easily damaged or killed, and weeds easily recover after trimming. • During regular weed maintenance efforts (focused around installed vegetation), also grub out any invasive species present in designated mitigation areas and remove from the site. As Built for Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan, 2023 3 • Apply slow-release, phosphorous-free, granular fertilizer to each installed plant annually in the spring (by June 1) of years 2 through 5. • Mulch the weeded areas beneath each plant with wood chip mulch as necessary to maintain a minimum 4-inch-thick, 18-inch-diameter mulch ring. • Ensure plants receive a minimum of one inch of water per week, as needed, from June 1st through September 30th for the first two years following installation. The most feasible irrigation option for the site is expected to be use of a watering truck. Irrigation beyond the second year may be needed based on site performance or significant replanting. • Follow additional recommendations notes in the spring or annual monitoring site visit. • As directed, install replacement plants during the upcoming dormant season (October 15th to March 15th) to ensure an 80% survival rate. MITIGATION PLANTING PLAN: Buffer Enhancement Common Botanical Amt Size Spacing Vine maple Acer circinatum 40 2-gallon 9 ft on center Serviceberry Amelanchier alnifolia 40 2-gallon “ Beaked hazelnut Corylus cornuta 40 2-gallon 6 ft oc Oceanspray Holodiscus discolor 40 1-gallon “ Tall Oregon grape Mahonia aquifolium 40 1-gallon “ Indian plum Oemleria cerasiformis 40 1-gallon “ Sweet mock orange Philadelphis lewisii 40 1-gallon “ Pacific ninebark Physocarpus capitatus 40 1-gallon “ Nootka rose Rosa nutkana 40 1-gallon “ Salmonberry Rubus spectabilis 40 1-gallon “ Snowberry Symphoricarpus albus 40 1-gallon “ Sword fern Polysticum munitum 250 1-gallon 2 ft oc Total 690 As Built for Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan, 2023 4 *Non-compensatory Add-on Common Botanical Amt Size Spacing Small-fruited bulrush Scirpus microcarpus 50 1-gallon 2 ft oc Slough sedge Carex obnupta 50 1-gallon 2 ft oc Total 100 *Non-compensatory emergent plant species were added to two small, ponded depression areas within the planting site. The addition of these plants will provide habitat value for amphibians, insects, and bird species. Site Location Map As Built for Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan, 2023 5 Photo Point Map Photo Point Locations PPT 1: 47.2816N/122.1111W As Built for Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan, 2023 6 PPT 2: 47.2817N/122.1111W PPT 3: 47.2818N/122.1109W As Built for Talbot Mitigation Project and Honey Dew Creek Habitat Tree Plan, 2023 7 AS BUILT FOR ENERGIZE EASTSIDE, CITY OF RENTON, Honey Dew Creek Habitat Tree Plan 2023 Conditional Use Permit: LUA 18-000055, CU-H, SME Construction Permit: C20002903 PSE CONTACT: Stan Haralson, PSE Vegetation Management, 253-905-4432 MITIGATION COORDINATOR: DCG/Watershed TREE SERVICE FOR SNAG CREATION: Kemp West SNAG CREATION TIMEFRAME: 2022 PLANTING AREA: Location Parcel numbers: 2023059001, 0423059342, 0423059035, Renton, WA Project Description: In the Honey Dew Creek buffer, snag creation will mitigate for some construction impacts occurring within the May Creek sub-basin. Sixteen (16) trees proposed for removal were snagged or hinge-cut. See the attached Honey Dew Creek Habitat Tree Plan As-Built for additional information.