Robert Saur Sr. Remediation Project Manager

Environmental Remediation 3401 Crow Canyon Road San Ramon, CA 94583

(925) 415-6371 [email protected]

15 September 2020

Mr. Fred Hetzel San Francisco Bay Regional Water Quality Control Board 245 Market Street Mail Room N10A Office 1056B San Francisco, CA 94105

Subject: CIWQS Place ID 812833 Fourth Annual Plant Monitoring Report Former Hunters Point Power Plant 1000 Evans Avenue, San Francisco, California

Dear Mr. Hetzel: Enclosed is the Fourth Annual Plant Monitoring Report for the PG&E Hunters Point Site Shoreline Remediation Project, San Francisco, California, prepared by Still Water Sciences, to document the revegetation and landscaping activities completed under the Conditional Water Quality Certification (Certification; CIWQS ID 812833, Army Corps File No. 2012-00140S) to conduct soil remediation and surface restoration activities at the former Hunters Point Power Plant located at 1000 Evans Avenue, San Francisco, California. This report is meant to satisfy Condition 11 of the Certification which requires the Applicant to submit annual mitigation monitoring reports.

Sincerely,

Please contact me at (925) 415-6371, or [email protected], with any questions.

Sincerely,

Robert Saur, PG Sr. Remediation Project Manager

Enclosure

FINAL TECHNICAL MEMORANDUM ◦ SEPTEMBER 2020 Year 4 Plant Monitoring Report for the PG&E Hunters Point Power Plant Site Shoreline Remediation Project, San Francisco, California

PREPARED FOR PREPARED BY Pacific Gas & Electric Company Stillwater Sciences 245 Market Street, N10A 2855 Telegraph Avenue, Suite 400 San Francisco, CA 94105 Berkeley, CA 94705

Stillwater Sciences Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Stillwater Sciences. 2020. Year 4 Plant Monitoring Report for the PG&E Hunters Point Power Plant Site Shoreline Remediation Project, San Francisco, California. Final Technical Memorandum. Prepared by Stillwater Sciences, Berkeley, California for PG&E, San Francisco, California.

Cover photo: Hunters Point shoreline remediation site June 2020 (photo point 12, facing southeast).

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Table of Contents 1 INTRODUCTION...... 1 1.1 Project Background ...... 1 1.2 Project Area ...... 4 1.3 Planting Implementation ...... 4 2 MANAGEMENT ACTIVITIES PERFORMED ...... 5 3 MONITORING METHODS ...... 5 3.1 Performance Standards ...... 5 3.2 Survival of Planted Species ...... 6 3.3 Percent Cover of Native Species and Target Weeds ...... 9 3.4 Photo Monitoring ...... 9 3.5 Data Analysis ...... 9 4 MONITORING RESULTS ...... 9 4.1 Survival of Planted Species ...... 9 4.2 Percent Cover of Native Species and Target Weeds ...... 12 4.3 Photo Monitoring ...... 14 5 ACHIEVEMENT OF PERFORMANCE STANDARDS...... 15 6 RECOMMENDATIONS FOR ADAPTIVE MANAGEMENT ...... 17 7 LITERATURE CITED ...... 17

Tables Table 1. Vegetation types established in the Project Area...... 4 Table 2. Performance standards for monitoring...... 5 Table 3. Vigor categories...... 6 Table 4. Percent survival by plot and vegetation type in Year 4...... 10 Table 5. Percent survival by plot and vegetation type in Years 2, 3, and 4...... 10 Table 6. Percent survival by species in Year 4...... 11 Table 7. Total absolute cover and absolute cover of target weeds by quadrat and by vegetation type in Year 4...... 12 Table 8. Total absolute cover and relative cover of native plants by quadrat and by vegetation type in Years 2, 3, and 4...... 13 Table 9. Average absolute cover of non-native species within quadrats sampled in Year 4. .... 14 Table 10. Locations for permanent photo points in Year 4...... 14 Table 11. Summary of performance standards for monitoring for Year 4...... 16

Figures Figure 1. Project location...... 2 Figure 2. Project features...... 3 Figure 3. Locations of survival plots, cover quadrats and photo point locations during the Year 3 monitoring effort...... 7

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Appendices Appendix A. Non-native Plants Observed in the Project Area Appendix B. As-built Planting Design Appendix C. Monitoring Data for Year 3 Appendix D. Photo Points

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1 INTRODUCTION

1.1 Project Background The Pacific Gas and Electric Company (PG&E) Hunters Point Power Plant Site (HPPP Site) is located in southeast San Francisco (Figure 1). The HPPP Site is the location of the former Hunters Point Power Plant, which was permanently shut down in May 2006. Since that time, all aboveground structures have been dismantled and removed, underground structures (e.g., former water intake tunnels) have been closed and/or removed, and various cleanup and restoration activities have been completed in accordance with the Voluntary Cleanup Agreement (VCA) between PG&E and the California Department of Toxic Substances Control. As part of the HPPP Shoreline Remediation Project (Project), PG&E performed soil remediation and surface enhancement in the Shoreline Area of the HPPP Site, including (1) removal of accessible soil to an approximate depth of 2 feet at six locations (Remediation Areas 1 through 6; Figure 2), and (2) enhancement of the Shoreline Area surface to conserve existing natural areas and improve public access opportunities. The soil removal activities addressed impacted soil, and the surface enhancement addressed the Bay Area Air Quality Management District requirements for areas with naturally occurring asbestos (NOA), as well as San Francisco Bay Conservation and Development Commission (BCDC) requirements and guidelines for areas within their 100-foot shoreline band. Enhancement activities included landscaping and revegetation (planting) with the following goals: • Stabilize soils to prevent wind- and water-borne mobilization of NOA and protect future users against health risks from NOA; • Improve upland grassland and/or coastal scrub habitat; • Expand and improve artificial swales and bio-retention areas to treat site stormwater runoff; and • Create turf meadow zones for informal public use such as seating and picnicking

As part of the Project, PG&E developed a Planting and Monitoring Plan (Stillwater Sciences et al. 2015) to provide additional details on the planting as well as the monitoring that will be performed to ensure that the planting goals are achieved. The plan includes details on monitoring methods as well as maintenance activities and adaptive management that may be necessary. The Regional Water Quality Control Board (RWQCB) reviewed and approved the plan. The 401 Water Quality Certification required that restoration actions include the re-establishment of 1.83 acres of native upland grassland habitat and 1.15 acres of Coastal Scrub habitat along the shoreline and that “grass, forb, and shrub plantings in mitigation areas shall be monitored for a minimum period of five years, and until the success criteria in the Mitigation and Monitoring Plan are achieved.” As described in the monitoring plan, annual monitoring will occur in late spring/early summer (e.g., May or June) and reports will be prepared after each annual monitoring event and distributed to the permitting agencies by November 15. The annual monitoring reports will document the results for performance standard criteria from all planting areas and whether the performance standards are being met. If performance standards are not met, the report will include recommendations for adaptive management and subsequent discussions will be held with RWQCB and/or other relevant permitting agencies to discuss and finalize these actions.

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Figure 1. Project location.

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Figure 2. Project features.

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1.2 Project Area The HPPP Site is a 30-acre property located at 1000 Evans Avenue in the Hunters Point neighborhood of San Francisco, immediately south of Heron’s Head Park, north of the India Basin Shoreline Park and adjacent to India Basin in San Francisco Bay (Figure 1). The Project Area for planting occurs on the perimeter of the HPPP Site as illustrated in Figure 2 and includes the VCA-defined Shoreline Area, which incorporates the public access path that connects Heron’s Head Park and India Basin Shoreline Park and associated public use areas. The Project Area is bordered on the landside by the demolished, cleaned, and largely paved HPPP Site and on the waterside by India Basin and a tidal inlet and tidal lagoon that are hydrologically connected to San Francisco Bay. The banks of these waterbodies are primarily rip-rap.

1.3 Planting Implementation At Project completion, the Project Area along the shoreline was stabilized with both impervious (concrete and asphalt) and pervious surfaces (decomposed granite and areas with planting). All restoration and planting activities were done in accordance with the Planting and Monitoring Plan. Prior to planting, the site was prepared by contouring temporarily disturbed areas to grade and removing target weeds as defined in the Planting and Monitoring Plan (Appendix A). Weed removal included manual removal of fennel (Foeniculum vulgare) and purple pampas grass (Cortaderia jubata), and herbicide application to areas with a high density of non-native herbaceous cover.

The Project Area was planted in January 2017 in accordance with the planting plan developed in the Planting and Monitoring Plan. Plants were procured from a local source and the planting areas were stabilized with a tackified hydroseed. The Planting and Monitoring Plan included the vegetation types listed in Table 1 and species selected included those that are native to the San Francisco Bay region and/or California, are horticultural varietals of native species, or if not native to California, are appropriately climate-adapted to the San Francisco Bay Area, as well as consistent with BCDC guidelines (Appendix B).

Table 1. Vegetation types established in the Project Area. Approximate Vegetation type Notes acres Bioretention 0.32 – Areas Includes the following sub-types: Coastal Coastal Grassland 1.67 Grassland Low, Coastal Grassland Medium Meadow, and Slope Enhancement Referred to as Coastal Scrub Meadow Coastal Scrub 1.17 Lawn in the Planting and Monitoring Plan; includes an herbaceous understory Meadow Lawn 0.39 –

Immediately after planting was completed, an uncharacteristically large storm event occurred that caused high overland flow and runoff, uprooted recently planted containers and washed away large swathes of seed mix. This unusual event resulted in the need for supplemental planting, seeding, mulching, and other maintenance activities throughout 2017 as detailed in the First Annual Restoration Monitoring Report (ERM 2017).

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2 MANAGEMENT ACTIVITIES PERFORMED

Maintenance activities that have been performed after the Years 1, 2, and 3 plant monitoring dates include regular irrigation, invasive weed control, and vegetation trimming. No replacement plantings were made following the conclusion of Year 1 monitoring in the winter of 2017/2018. Two supplemental planting events occurred after the Year 2 (2018) monitoring: one in March 2019 and one in May 2019. The March event addressed recommendations to improve survival and cover performance where these criteria were not being met as summarized in the Year 2 Planting Recommendations Technical Memorandum (Stillwater Sciences 2018a). The May event addressed recommendations following lighting replacement activities which resulted in ground disturbance and reduction in vegetative cover as summarized in the Planting Recommendations for Lighting Areas Technical Memorandum (Stillwater Sciences 2019a). One supplemental planting event occurred after the Year 3 monitoring in November 2019; this event addressed recommendations to improve survival and cover performance where these criteria were not being met as summarized in the Year 3 Planting Recommendations Technical Memorandum (Stillwater Sciences 2019b).

3 MONITORING METHODS

Year 4 monitoring was conducted on June 17 and 18, 2020. Monitoring methods followed the protocols established in the Planting and Monitoring Plan and any adjustments made to the approach during the Years 2 and 3 monitoring events as described in the Year 2 Plant Monitoring Report (Stillwater Sciences 2018b) and the Year 3 Plant Monitoring Report (Stillwater Sciences 2019c).

3.1 Performance Standards The performance standards developed in the Planting and Monitoring Plan are summarized in Table 2. The monitoring methods described below are intended to assess whether the Project is meeting these standards on an annual basis; however, the standards are not required to be met until the five year monitoring period is complete.

Table 2. Performance standards for monitoring. Minimum Maximum overall percent Minimum absolute Vegetation type survival of absolute percent percent cover of container cover target weeds2 stock1 Bioretention Areas 98 5 Coastal Grassland 80 2 80 Coastal Scrub 70 2 Meadow Lawn 98 5 1 Survival standards only apply to plug and container plantings. 2 Targeted weed species are those plants with a California Invasive Plant Council (Cal- IPC) rating of “high” (CAL-IPC 2020) and any other species deemed appropriate in consultation with a qualified biologist; see Appendix A.

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3.2 Survival of Planted Species During the Year 1 monitoring effort, planted container stock were monitored for survival in five plots; plugs were determined to be indistinguishable from plants that had been seeded so they were not monitored. These plots were 75 feet by 25 feet, their boundaries overlapped different vegetation types, and they included representative samples of each planted vegetation type (Table 1, Figures 3a and 3b). Within each plot, the vigor category (Table 3) was noted for each planted species. The number of dead individuals of each species was compared with the as-built planting numbers to calculate a percent survival by species and for overall plantings. Prior to the Year 4 monitoring event, any container plants that were added within the survival plot boundaries during the March, May, and November 2019 supplemental planting events were recorded with a sub- meter accuracy geographic positioning system (GPS); the as-built information in combination with the supplemental planting events was utilized as the baseline to assess which plants had survived and the vigor of each surviving plant.

Table 3. Vigor categories. Category Description 0 Dead 1 Less than 25 percent of foliage appears to be healthy1 2 25 to 50 percent of foliage appears to be healthy 3 51 to 80 percent of foliage appears to be healthy 4 81 percent (or greater) of foliage appears to be healthy 1 Healthy foliage is defined as showing no signs of herbivory, nutrient or water stress, or pathogens on stems or foliage.

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Figure 3a. Locations of survival plots, cover quadrats and photo point locations during the Year 3 monitoring effort.

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Figure 3b. Locations of survival plots, cover quadrats and photo point locations during the Year 3 monitoring effort.

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3.3 Percent Cover of Native Species and Target Weeds During the Year 1 monitoring effort, six 1-square-meter cover quadrats were established in each of the four planted vegetation types (Figures 3a and 3b).. During Year 2 monitoring, these same quadrats were sampled except for a few cases where the quadrat was not placed in the vegetation type that was being assessed; as such, several quadrats were moved to ensure six quadrats per vegetation type. During Years 3 and 4 monitoring, the same quadrats were sampled as sampled in Year 2. At each quadrat, a visual estimate of absolute cover for each plant species present was recorded. All plant species were identified following the taxonomy of Jepson eFlora (Jepson Flora Project 2020).

3.4 Photo Monitoring Fixed locations for photo monitoring were established during the Year 1 and Year 2 monitoring efforts to monitor site changes over time (Figures 3a and 3b). During Year 4 monitoring, photos were taken from a standing position at all established photo points at the specified compass bearing.

3.5 Data Analysis Data were collected and analyzed to assess whether the performance standards are being met. Percent survival was calculated by dividing the number of living plants by the number of originally planted plants plus any plants that were planted subsequent to the initial planting effort (i.e., March, May, and November 2019 supplemental planting events). Survival was calculated for each vegetation type present within the individual survival plots, as an average per vegetation type, and by species. Average vigor was also calculated at a species level to inform the need for adaptive management.

Percent cover of all target weeds in a plot was summed separately from all other species in each quadrat. Total absolute percent cover and absolute percent cover of target weeds was reported for each quadrat and an average was calculated for each vegetation type.

4 MONITORING RESULTS

An overview of the location of all survival plots, quadrats, and photo points for Year 4 monitoring is displayed in Figures 3a and 3b. Vegetation monitoring field data are available in Appendix C.

4.1 Survival of Planted Species Percent survival of planted individuals varied by plot and vegetation type. Overall, average survival was lowest in Coastal Scrub (Table 4). Between Years 3 and 4, cover decreased significantly for Coastal Grassland and Coastal Scrub and decreased slightly for Bioretention Areas (Table 5). During the Year 4 monitoring event, it was observed that there was significant die-off of multiple plantings in the Coastal Scrub areas of Plots 1 and 5 and Coastal Grassland areas of Plot 2; a portion of this die-off was due to a string-line trimming event that occurred in early June that killed and/or severely damaged many of the plants (i.e., all 40 of the Grindelia camporum [Great Valley gumweed] in Plot 5 and 23 out of 51 Elymus condensatus [giant wild-

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rye] in Plot 2). Reduced survival in the Coastal Grassland area of Plot 5 can primarily be attributed to the fact that most of the plot was re-assigned from Coastal Grassland to Coastal Scrub between Years 3 and 4 (Stillwater Sciences 2019c).

Table 4. Percent survival by plot and vegetation type in Year 4. Total Total plants with Dead or Percent Plot Vegetation type number of vigor of missing survival plants 1 to 4 Coastal Grassland 14 9 5 64 1 Coastal Scrub 146 61 85 42 Coastal Grassland 70 64 6 91 2 Coastal Scrub 5 5 0 100 3 Bioretention Areas 365 343 22 94 Coastal Grassland 28 12 16 43 4 Coastal Scrub 44 24 20 55 Coastal Grassland 3 0 3 0 5 Coastal Scrub 130 47 83 36 Bioretention Areas 365 343 22 94 Coastal Grassland 115 85 30 74 Coastal Scrub 325 137 188 42

Table 5. Percent survival by plot and vegetation type in Years 2, 3, and 4. Percent of survival Plot Vegetation type Year 2 Year 3 Year 4 Coastal Grassland 69 71 64 1 Coastal Scrub 75 62 42 Coastal Grassland 99 100 91 2 Coastal Scrub 100 100 100 3 Bioretention Areas 97 95 94 Coastal Grassland 76 68 43 4 Coastal Scrub 60 63 55 Coastal Grassland 89 68 0 5a Coastal Scrub 64 71 36 Meadow Lawn 43 52 – Bioretention Areas 97 95 94 Coastal Grassland 90 83 74 Coastal Scrub 71 66 42 Meadow Lawn 43 52 – a During the Year 3 monitoring event, it was determined that the species present in survival plot 5 were not representative of Meadow Lawn; the majority of the plot was subsequently re-assigned to Coastal Scrub.

The average survival rate of each planted species was also assessed for Year 4. Species with particularly low survival (i.e., less than 35 percent) and vigor (i.e., 1 or 2) included: Alstromeria sp. (Peruvian lily), Artemisia pycnocephala (coastal sagewort), Ceanothus sp. (California lilac), Eriogonum latifolium (seaside wild buckwheat), Eriophyllum confertiflorum (golden-yarrow), Eriophyllum sp. (woolly sunflower), Grindelia camporum, Hesperocyparis macrocarpa (Monterey cypress), Lupinus arboreus (yellow bush lupine), Plantago subnuda (tall coastal plantain), Romneya coulteri (Coulter’s matilija poppy), and Salvia sp. (sage) (Table 6).

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Additionally, several species had high survival but average relatively low vigor. Some of the low survival and/or vigor may be due to the May 2020 trimming event; however, some of these plants may not be well-suited for the site. This information can be used as a guide for selecting more successful species to replace the less successful plantings.

Table 6. Percent survival by species in Year 4. Total Total Dead or Percent Average Scientific name Common name live plants missing survival vigor plants Alstroemeria sp. Peruvian lily 9 0 9 0% 0 Artemisia coastal sagewort 20 2 18 10% 0 pycnocephala Baccharis pilularis coyote brush 4 4 0 100% 4 orange stalked Bulbine frutescens 18 18 0 100% 3 bulbine Calandrinia rock purslane 34 20 14 59% 1a spectabilis Ceanothus sp. California lilac 19 4 15 21% 1 orange bush Diplacus aurantiacus 6 4 2 67% 2 monkeyflower Elymus condensatus giant wild-rye 61 56 5 92% 1a Erigeron glaucus seaside daisy 32 15 17 47% 1 seaside wild Eriogonum latifolium 32 0 32 0% 0 buckwheat Eriophyllum golden-yarrow 5 0 5 0% 0 confertiflorum Eriophyllum sp. woolly sunflower 3 1 2 33% 1 Fremontodendron California 8 8 0 100% 4 californicum flannelbush Great Valley Grindelia camporum 40 8 32 20% 1a gumweed Hesperocyparis Monterey cypress 1 0 1 0% 0 macrocarpa Heteromeles toyon 1 1 0 100% 4 arbutifolia Juncus patens spreading rush 303 303 0 100% 4 Lupinus arboreus yellow bush lupine 26 6 20 23% 1 Lyonothamnus Catalina ironwood 1 1 0 100% 4 floribundus Malacothamnus Fremont's 4 4 0 100% 3 fremontii bushmallow Melaleuca broad-leaved 2 2 0 100% 4 quinquenervia paperbark Morella californica wax myrtle 5 5 0 100% 4 Muhlenbergia rigens deer grass 5 5 0 100% 3 Plantago subnuda tall coastal plantain 5 0 5 0% 0 Coulter's matilija Romneya coulteri 20 3 17 15% 0 poppy Salix lasiandra Pacific willow 1 1 0 100% 4 Salix lasiolepis arroyo willow 4 4 0 100% 4 Salvia leucophylla purple sage 2 2 0 100% 4 Salvia sonomensis creeping sage 12 8 4 67% 2 Salvia sp. sage 36 9 27 25% 1

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Total Total Dead or Percent Average Scientific name Common name live plants missing survival vigor plants California Salvia spathacea 3 2 1 67% 2 hummingbird sage Sambucus nigra black elderberry 1 1 0 100% 2a Sporobolus sp. dropseed grass 62 52 10 84% 3 Watsonia sp. bulge-lily 18 16 2 89% 3 a Survival and/or vigor for this species was at least partially impacted by the May 2020 trimming event (Appendix C).

4.2 Percent Cover of Native Species and Target Weeds The total cover of all vegetation observed in Year 3 was highly variable between quadrats; average absolute cover was highest in the Bioretention Areas and lowest in Coastal Scrub (Table 7). Absolute cover of target weeds was zero percent in all quadrats except two; this was due to the presence of one plant of Cortaderia jubata (purple pampas grass) in quadrat 2 and one individual Foeniculum vulgare (fennel) in quadrat 18 (Table 7). Between Years 3 and 4, cover decreased significantly in two Meadow Lawn quadrats (8, 11) and two Bioretention Areas quadrats (22, 23) while cover increased, often significantly, in multiple quadrats (Table 8). A few quadrats have relatively low cover of native species (i.e., quadrats 1, 9, and 12). Non-native species that account for significant cover in many plots include Festuca arundinacea (tall fescue), Helminthotheca echioides (bristly ox-tongue), Medicago lupulina (black medick), Medicago polymorpha (California burclover), Plantago coronopus (buckhorn plantain), Polypogon monspeliensis (annual beard grass), and Polypogon viridis (water beard grass) (Table 9).

Table 7. Total absolute cover and absolute cover of target weeds by quadrat and by vegetation type in Year 4. Total absolute Total absolute percent Quadrat Vegetation type percent cover vegetative cover target weeds 1 Coastal Scrub 71 0 2 Coastal Scrub 83 3 3 Coastal Scrub 82 0 4 Coastal Scrub 78 0 5 Coastal Grassland 97 0 6 Coastal Scrub 63 0 7 Meadow Lawn 132 0 8 Meadow Lawn 27 0 9 Meadow Lawn 92 0 10 Coastal Scrub 96 0 11 Meadow Lawn 86 0 12 Meadow Lawn 98 0 13 Coastal Grassland 86 0 14 Coastal Grassland 102 0 15 Coastal Grassland 122 0 16 Coastal Grassland 89 0 17 Coastal Scrub 60 0 18 Coastal Grassland 118 3 19a Coastal Scrub 68 0 20 Bioretention Areas 108 0

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Total absolute Total absolute percent Quadrat Vegetation type percent cover vegetative cover target weeds 21 Bioretention Areas 140 0 22 Bioretention Areas 94 0 23 Bioretention Areas 106 0 24 Bioretention Areas 152 0 Bioretention Areas 120 0 Average absolute Coastal Grassland 102 0.5 percent cover Coastal Scrub 75 0.4 Meadow Lawn 87 0 a This plot was re-assigned between Years 3 and 4 from Bioretention Area to Coastal Scrub based on site topography (Stillwater Sciences 2018c).

Table 8. Total absolute cover and relative cover of native plants by quadrat and by vegetation type in Years 2, 3, and 4. Total absolute percent vegetative cover Quadrat Vegetation type (relative percent native) Year 2 Year 3 Year 4 1 Coastal Scrub 60 (100) 70 (97) 71 (65) 2 Coastal Scrub 44 (68) 70 (53) 83 (77) 3 Coastal Scrub 69 (41) 77 (81) 82 (99) 4 Coastal Scrub 77 (86) 57 (65) 78 (82) 5 Coastal Grassland 67 (84) 90 (61) 97 (82) 6 Coastal Scrub 105 (100) 52 (98) 63 (98) 7 Meadow Lawn 81 (84) 110 (64) 132 (80) 8 Meadow Lawn 56 (100) 66 (30) 27 (96) 9 Meadow Lawn 52 (96) 97 (85) 92 (65) 10 Coastal Scrub 67 (100) 76 (100) 96 (97) 11 Meadow Lawn 71 (56) 98 (78) 86 (84) 12 Meadow Lawn 59 (80) 79 (5) 98 (43) 13 Coastal Grassland 46 (91) 59 (81) 86 (93) 14 Coastal Grassland 28 (89) 73 (52) 102 (81) 15 Coastal Grassland 85 (74) 119 (24) 122 (79) 16 Coastal Grassland 27 (89) 79 (76) 89 (88) 17 Coastal Scrub 121 (63) 50 (100) 60 (100) 18 Coastal Grassland 92 (72) 118 (92) 118 (93) 19 Coastal Scrub 18 (67) 23 (17) 68 (82) 20 Bioretention Areas 102 (95) 63 (81) 108 (100) 21 Bioretention Areas 118 (92) 56 (98) 140 (91) 22 Bioretention Areas 156 (62) 120 (100) 94 (78) 23 Bioretention Areas 115 (98) 165 (97) 106 (100) 24 Bioretention Areas 99 (99) 64 (88) 152 (80) Bioretention Areas 101 (86) 82 (90) 120 (90) Average absolute Coastal Grassland 58 (80) 90 (63) 102 (86) percent cover Coastal Scrub 78 (69) 65 (78) 75 (88) Meadow Lawn 64 (78) 90 (56) 87 (70)

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Table 9. Average absolute cover of non-native species within quadrats sampled in Year 4. Average Scientific name Common name absolute cover Cortaderia jubata purple pampas grass 3 Erigeron bonariensis flax-leaved horseweed 0 Festuca arundinacea tall fescue 10 Festuca myuros rattail sixweeks grass 2 Foeniculum vulgare fennel 3 Helminthotheca echioides bristly ox-tongue 8 Hypochaeris radicata rough cat’s-ear 2 Lactuca serriola prickly lettuce 2.5 Lotus corniculatus bird’s-foot trefoil 2 Medicago lupulina black medick 7 Medicago polymorpha California burclover 10 Melilotus indicus sourclover 0 Plantago coronopus buckhorn plantain 9 Polygonum sp. knotweed 2 Polypogon monspeliensis annual beard grass 15 Polypogon viridis water beard grass 14 Pseudognaphalium luteoalbum Jersey cudweed 2 Sonchus oleraceus common sow thistle 2

4.3 Photo Monitoring The photo log (Appendix D) provides photographs taken at all the established photo points. All photo point locations are summarized in Table 10.

Table 10. Locations for permanent photo points in Year 4. Photo Cardinal Compass Latitude/Longitude Habitat type point direction bearing North 360 Coastal Grassland 1 37.73471, -122.37632 West 290 Coastal Grassland 2 37.73497, -122.37626 South 180 Coastal Grassland 3 37.73497, -122.37615 North 350 Coastal Scrub 4 37.73548, -122.37605 North 350 Coastal Scrub South 170 Meadow Lawn 5 37.73586, -122.37612 Coastal Grassland North 22 & Coastal Scrub East 85 Coastal Grassland 6 37.73591, -122.37661 Southeast 140 Coastal Grassland Coastal Grassland North 22 & Coastal Scrub 7 37.73622, -122.37565 Coastal Grassland Southwest 212 & Coastal Scrub 8 37.73665, -122.37548 Southwest 210 Bioretention Areas 9 37.73682, -122.37513 North 10 Coastal Scrub West 250 Coastal Scrub 10 37.73761, -122.37514 Southeast 140 Coastal Scrub North 340 Coastal Scrub

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Photo Cardinal Compass Latitude/Longitude Habitat type point direction bearing Southeast 140 Meadow Lawn 11 37.73782, -122.37553 West 280 Bioretention Areas 12 37.73796, -122.37575 East 90 Coastal Scrub 13 37.73818, -122.37763 Northeast 30 Coastal Grassland 14 37.73809, -122.37684 Northeast 30 Meadow Lawn Coastal Grassland 15 37.73863, -122.37634 Southwest 240 & Coastal Scrub Coastal Grassland 16 37.73849, -122.37569 West 290 & Coastal Scrub 17 37.73547, -122.37625 North 350 Meadow Lawn

5 ACHIEVEMENT OF PERFORMANCE STANDARDS

There are currently 1.96 acres of native upland grassland (Coastal Grassland and Meadow Lawn) and 1.29 acres of Coastal Scrub; therefore, the Project meets the RWQCB’s requirements for 1.83 acres of native upland grassland habitat and 1.15 acres of Coastal Scrub habitat along the shoreline. However, several of the specific performance standards that were established in the Planting and Monitoring Plan are not yet being met (Table 11): survival performance standards are not being met for Coastal Grassland and Coastal Scrub and absolute cover standards are not being met for Meadow Lawn. As noted above in Section 3.1, performance standards are not required to be met until the monitoring period (5 years) is complete, which is considered an appropriate establishment period for the species that were planted. Recommendations for adaptive management are provided below.

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Table 11. Summary of performance standards for monitoring for Year 4. Survival Cover Target weeds Year 4 percent Year 4 overall Year 4 target weeds Performance Vegetation type survival Performance percent absolute absolute cover Performance standard (performance standard met? cover (performance (performance standard met? met? standard) standard) standard) Bioretention Areas 94 (80) Yes 120 (98) Yes 0 (<5) Yes Coastal Grassland 74 (80) No 102 (80) Yes 0.5 (<2) Yes Coastal Scrub 42 (80) No 75 (70) Yes 0.4 (<2) Yes Meadow Lawn – (80) N/A 87 (98) No 0 (<5) Yes

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6 RECOMMENDATIONS FOR ADAPTIVE MANAGEMENT

Based on the results of the Year 4 monitoring survey, additional planting is recommended in fall 2020 to improve survival and cover performance where these criteria are not being met as indicated in Table 11, as follows: • Coastal Grassland: replace many of the herbaceous plants that have died to improve survival. • Coastal Scrub: replace many of the woody plants that have died to improve survival. • Meadow Lawn: plant plugs to increase cover.

Species should be selected based on the original planting design and also with consideration of documented survival rates and average vigor of individual species as reported in Table 5. A technical memorandum identifying the locations for the supplemental planting and the species for each area should be developed in early fall so the replanting can be completed as the rainy season initiates (e.g., late October or early November) to allow for successful establishment.

Target weed cover should continue to be monitored over the course of Year 5 as part of ongoing Project maintenance activities; removal of target invasive species must be performed as soon as they are identified to minimize establishment. Removal of additional non-native plant species that have significant cover and are displacing natives (e.g., Lotus corniculatus [bird’s-foot trefoil], Medicago lupulina, Medicago polymorpha, Polypogon viridis, and Sonchus asper subsp. asper [prickly sow thistle]) should be also conducted on an as-needed basis.

Irrigation should continue to be monitored as part of ongoing Project maintenance activities and adjusted as necessary to ensure short- and long-term success.

7 LITERATURE CITED

CAL-IPC. 2020. The Cal-IPC inventory. Website. https://www.cal-ipc.org/plants/inventory/ [Accessed August 2020]. Prepared by CAL-IPC, Berkeley, California.

ERM. 2017. First Annual Restoration Monitoring Report, Former Hunters Point Power Plant Shoreline Remediation and Restoration Project. Prepared by ERM for PG&E, San Francisco, California.

Jepson Flora Project, editors. 2020. Jepson eFlora. http://ucjeps.berkeley.edu/eflora/.

Stillwater Sciences, envelope A+D, RHAA Landscape Architecture, and Greenlee & Associates. 2015. Planting and monitoring plan for the PG&E Hunters Point Site Shoreline Remediation Project, San Francisco, California. Draft Report. Prepared by Stillwater Sciences, Berkeley, California; envelope A+D, Berkeley, California; RHAA Landscape Architecture + Planning, San Francisco, California; and Greenlee & Associates, Brisbane, California for PG&E, San Francisco, California.

Stillwater Sciences. 2018a. Year 2 Planting Recommendations Technical Memorandum. Prepared by Stillwater Sciences, Berkeley, California for PG&E, San Francisco, California.

September 2020 Stillwater Sciences 17 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Stillwater Sciences. 2018b. Year 2 Plant Monitoring Report for the PG&E Hunters Point Site Shoreline Remediation Project, San Francisco, California. Final Report. Prepared by Stillwater Sciences, Berkeley, California for PG&E, San Francisco, California.

Stillwater Sciences. 2019a. Hunters Point Planting Recommendations for Lighting Areas Technical Memorandum. Prepared by Stillwater Sciences, Berkeley, California for PG&E, San Francisco, California.

Stillwater Sciences. 2019b. Year 3 Planting Recommendations Technical Memorandum. Prepared by Stillwater Sciences, Berkeley, California for PG&E, San Francisco, California.

Stillwater Sciences. 2019c. Year 3 Plant Monitoring Report for the PG&E Hunters Point Site Shoreline Remediation Project, San Francisco, California. Final Technical Memorandum. Prepared by Stillwater Sciences, Berkeley, California for PG&E, San Francisco, California.

September 2020 Stillwater Sciences 18 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Appendices

September 2020 Stillwater Sciences Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Appendix A

Non-native Plants Observed in the Project Area

September 2020 Stillwater Sciences Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Table A-1. Non-native plants observed at the Hunters Point Project site as of June 2020. Target weeds that must be removed per the Planting and Monitoring Plan are in bold font. Cal-IPC Scientific name Common name Family status1 Acacia melanoxylon blackwood acacia Fabaceae Limited Acacia pycnantha golden wattle Fabaceae None Anthemis cotula mayweed Asteraceae None Atriplex prostrata fat-hen Chenopodiaceae None Avena barbata slender wild oat Poaceae Moderate Avena fatua wild oat Poaceae Moderate Avena sativa cultivated oat Poaceae None Beta vulgaris subsp. maritima sea beet Chenopodiaceae None Brassica nigra black mustard Brassicaceae Moderate Bromus diandrus ripgut grass Poaceae Moderate Bromus hordeaceus soft chess Poaceae Limited Bromus madritensis subsp. rubens red brome Poaceae High Carduus pycnocephalus subsp. Italian thistle Asteraceae Moderate pycnocephalus Carpobrotus edulis hottentot fig Aizoaceae High Centaurea solstitialis yellow star-thistle Asteraceae High Centranthus ruber red valerian Valerianaceae None Cistus incanus hairy rockrose Cistaceae None bindweed, orchard morning- Convolvulus arvensis Convolvulaceae None glory Cortaderia jubata purple pampas grass Poaceae High Cotoneaster pannosus silverleaf cotoneaster Rosaceae Moderate Cynodon dactylon Bermuda grass Poaceae Moderate Dittrichia graveolens stinkwort Asteraceae Moderate Erigeron bonariensis flax-leaved horseweed Asteraceae None Erodium moschatum musky stork’s bill Geraniaceae None Eucalyptus sp. gum Myrtaceae None Festuca arundinacea tall fescue Poaceae Moderate Festuca myuros rattail sixweeks grass Poaceae Moderate Festuca perennis ryegrass Poaceae Moderate Festuca pratensis meadow fescue Poaceae None Foeniculum vulgare fennel Apiaceae Moderate Fumaria capreolata white ramping fumitory Papaveraceae None Genista monspessulana French broom Fabaceae High Geranium dissectum cutleaf geranium Geraniaceae Limited Geranium molle dovefoot geranium Geraniaceae None Glebionis coronaria garland or crown daisy Asteraceae Moderate Grevillia sp. grevillia Proteaceae None Hedera helix English ivy Araliaceae High Helminthotheca echioides bristly ox-tongue Asteraceae Limited Hirschfeldia incana shortpod mustard Brassicaceae Moderate Hordeum marinum subsp. Mediterranean barley Poaceae Moderate gussoneanum Hordeum murinum wall barley Poaceae Moderate Hypochaeris radicata rough cat’s-ear Asteraceae Moderate Lactuca serriola prickly lettuce Asteraceae None Limonium ramosissimum Algerian sea lavender Plumbaginaceae Limited Lobularia maritima sweet alyssum Brassicaceae Limited Lotus corniculatus bird’s-foot trefoil Fabaceae None

September 2020 Stillwater Sciences A-1 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Cal-IPC Scientific name Common name Family status1 Lysimachia arvensis scarlet pimpernel Myrsinaceae None Malva nicaeensis bull mallow Malvaceae None Medicago lupulina black medick Fabaceae None Medicago polymorpha California burclover Fabaceae Limited Medicago sativa alfalfa Fabaceae None Melilotus indicus sourclover Fabaceae None Myoporum laetum myoporum, ngaio tree Scrophulariaceae Moderate Nicotiana glauca tree tobacco Solanaceae Moderate Opuntia spp. pricklypear Cactaceae None Oxalis pes-caprae Bermuda buttercup Oxalidaceae Moderate Paspalum dilatatum dallis grass Poaceae None Phalaris aquatica harding grass Poaceae Moderate Phytolacca americana var. pokeweed Phytolaccaceae Limited americana Plantago coronopus buckhorn plantain Plantaginaceae None Plantago lanceolata English plantain Plantaginaceae Limited Polypogon interruptus ditch beard grass Poaceae None Polypogon monspeliensis annual beard grass Poaceae Limited Polypogon viridis water beard grass Poaceae None Pseudognaphalium luteoalbum Jersey cudweed Asteraceae None Raphanus sativus radish Brassicaceae Limited Rosmarinus officinalis rosemary Lamiaceae None Rumex crispus curly dock Polygonaceae Limited Salsola soda oppositeleaf Russian thistle Chenopodiaceae Moderate Senecio vulgaris common groundsel Asteraceae None Silene gallica small flower catchfly Caryophyllaceae None Sonchus asper subsp. asper prickly sow thistle Asteraceae None Sonchus oleraceus common sow thistle Asteraceae None Spartina alterniflora salt-water cord grass Poaceae High Taraxacum officinale common dandelion Asteraceae None Tragopogon porrifolius salsify, oyster plant Asteraceae None Ulex europaeus common gorse Fabaceae High Vicia sativa subsp. sativa spring vetch Fabaceae None

September 2020 Stillwater Sciences A-2 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Appendix B

As-built Planting Design

September 2020 Stillwater Sciences

Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Appendix C

Monitoring Data for Year 4

September 2020 Stillwater Sciences Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Table C-1. Survival plot data for Year 4. Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 1 413 Coastal Grassland Baccharis pilularis 3 2019 No 1 147 Coastal Grassland Ceanothus sp. 0 Initial No 1 11 Coastal Grassland Erigeron glaucus 0 Initial No 1 19 Coastal Grassland Erigeron glaucus 3 Initial No 1 23 Coastal Grassland Erigeron glaucus 3 Initial No 1 148 Coastal Grassland Erigeron glaucus 3 Initial No 1 25 Coastal Grassland Fremontodendron californicum 4 Initial No 1 4 Coastal Grassland Heteromeles arbutifolia 4 Initial No 1 7 Coastal Grassland Romneya coulteri 0 Initial No 1 9 Coastal Grassland Romneya coulteri 0 Initial No 1 12 Coastal Grassland Romneya coulteri 0 Initial No 1 14 Coastal Grassland Romneya coulteri 1 Initial Yes 1 16 Coastal Grassland Romneya coulteri 1 Initial Yes 1 149 Coastal Grassland Sporobolus sp. 3 Initial No 1 1 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 3 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 6 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 13 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 15 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 21 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 30 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 31 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 34 Coastal Scrub Artemisia pycnocephala 1 Initial No 1 35 Coastal Scrub Artemisia pycnocephala 1 Initial No 1 36 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 39 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 40 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 42 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 45 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 46 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 50 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 55 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 57 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 60 Coastal Scrub Artemisia pycnocephala 0 Initial No 1 5 Coastal Scrub Baccharis pilularis 3 Initial No 1 41 Coastal Scrub Bulbine frutescens 3 Initial No 1 47 Coastal Scrub Bulbine frutescens 3 Initial No 1 48 Coastal Scrub Bulbine frutescens 3 Initial No 1 51 Coastal Scrub Bulbine frutescens 3 Initial No 1 54 Coastal Scrub Bulbine frutescens 3 Initial No 1 56 Coastal Scrub Bulbine frutescens 3 Initial No 1 58 Coastal Scrub Bulbine frutescens 3 Initial No 1 59 Coastal Scrub Bulbine frutescens 3 Initial No 1 63 Coastal Scrub Bulbine frutescens 3 Initial No 1 64 Coastal Scrub Bulbine frutescens 3 Initial No 1 65 Coastal Scrub Bulbine frutescens 3 Initial No 1 67 Coastal Scrub Bulbine frutescens 3 Initial No 1 69 Coastal Scrub Bulbine frutescens 3 Initial No 1 70 Coastal Scrub Bulbine frutescens 3 Initial No 1 71 Coastal Scrub Bulbine frutescens 3 Initial No

September 2020 Stillwater Sciences C-1 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 1 73 Coastal Scrub Bulbine frutescens 3 Initial No 1 75 Coastal Scrub Bulbine frutescens 3 Initial No 1 76 Coastal Scrub Bulbine frutescens 3 Initial No 1 8 Coastal Scrub Ceanothus sp. 0 Initial No 1 17 Coastal Scrub Ceanothus sp. 3 Initial No 1 18 Coastal Scrub Ceanothus sp. 3 Initial No 1 20 Coastal Scrub Ceanothus sp. 3 Initial No 1 22 Coastal Scrub Ceanothus sp. 0 Initial No 1 24 Coastal Scrub Ceanothus sp. 0 Initial No 1 26 Coastal Scrub Ceanothus sp. 0 Initial No 1 27 Coastal Scrub Ceanothus sp. 0 Initial No 1 29 Coastal Scrub Ceanothus sp. 0 Initial No 1 32 Coastal Scrub Ceanothus sp. 0 Initial No 1 33 Coastal Scrub Ceanothus sp. 0 Initial No 1 134 Coastal Scrub Ceanothus sp. 0 Initial No 1 137 Coastal Scrub Ceanothus sp. 0 Initial No 1 138 Coastal Scrub Ceanothus sp. 0 Initial No 1 140 Coastal Scrub Ceanothus sp. 0 Initial No 1 141 Coastal Scrub Ceanothus sp. 0 Initial No 1 142 Coastal Scrub Ceanothus sp. 3 Initial No 1 146 Coastal Scrub Ceanothus sp. 0 Initial No 1 412 Coastal Scrub Diplacus aurantiacus 2 2019 No 1 78 Coastal Scrub Elymus condensatus 1 Initial No 1 81 Coastal Scrub Elymus condensatus 1 Initial No 1 92 Coastal Scrub Elymus condensatus 1 Initial No 1 105 Coastal Scrub Elymus condensatus 1 Initial No 1 117 Coastal Scrub Elymus condensatus 1 Initial No 1 121 Coastal Scrub Elymus condensatus 1 Initial No 1 123 Coastal Scrub Elymus condensatus 1 Initial No 1 132 Coastal Scrub Elymus condensatus 1 Initial No 1 136 Coastal Scrub Elymus condensatus 1 Initial No 1 139 Coastal Scrub Elymus condensatus 1 Initial No 1 10 Coastal Scrub Erigeron glaucus 0 Initial No 1 28 Coastal Scrub Erigeron glaucus 3 Initial No 1 37 Coastal Scrub Erigeron glaucus 4 Initial No 1 38 Coastal Scrub Erigeron glaucus 0 Initial No 1 43 Coastal Scrub Erigeron glaucus 3 Initial No 1 49 Coastal Scrub Erigeron glaucus 1 Initial No 1 52 Coastal Scrub Erigeron glaucus 3 Initial No 1 53 Coastal Scrub Erigeron glaucus 3 Initial No 1 61 Coastal Scrub Erigeron glaucus 0 Initial No 1 62 Coastal Scrub Erigeron glaucus 2 Initial No 1 68 Coastal Scrub Erigeron glaucus 1 Initial No 1 74 Coastal Scrub Erigeron glaucus 0 Initial No 1 77 Coastal Scrub Erigeron glaucus 3 Initial No 1 83 Coastal Scrub Erigeron glaucus 3 Initial No 1 85 Coastal Scrub Erigeron glaucus 0 Initial No 1 97 Coastal Scrub Erigeron glaucus 0 Initial No 1 101 Coastal Scrub Erigeron glaucus 0 Initial No 1 112 Coastal Scrub Erigeron glaucus 0 Initial No 1 118 Coastal Scrub Erigeron glaucus 0 Initial No

September 2020 Stillwater Sciences C-2 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 1 127 Coastal Scrub Erigeron glaucus 0 Initial No 1 135 Coastal Scrub Erigeron glaucus 0 Initial No 1 143 Coastal Scrub Erigeron glaucus 0 Initial No 1 145 Coastal Scrub Erigeron glaucus 3 Initial No 1 82 Coastal Scrub Eriogonum latifolium 0 Initial No 1 84 Coastal Scrub Eriogonum latifolium 0 Initial No 1 87 Coastal Scrub Eriogonum latifolium 0 Initial No 1 89 Coastal Scrub Eriogonum latifolium 0 Initial No 1 90 Coastal Scrub Eriogonum latifolium 0 Initial No 1 91 Coastal Scrub Eriogonum latifolium 0 Initial No 1 93 Coastal Scrub Eriogonum latifolium 0 Initial No 1 94 Coastal Scrub Eriogonum latifolium 0 Initial No 1 95 Coastal Scrub Eriogonum latifolium 0 Initial No 1 98 Coastal Scrub Eriogonum latifolium 0 Initial No 1 99 Coastal Scrub Eriogonum latifolium 0 Initial No 1 100 Coastal Scrub Eriogonum latifolium 0 Initial No 1 102 Coastal Scrub Eriogonum latifolium 0 Initial No 1 103 Coastal Scrub Eriogonum latifolium 0 Initial No 1 104 Coastal Scrub Eriogonum latifolium 0 Initial No 1 106 Coastal Scrub Eriogonum latifolium 0 Initial No 1 107 Coastal Scrub Eriogonum latifolium 0 Initial No 1 108 Coastal Scrub Eriogonum latifolium 0 Initial No 1 109 Coastal Scrub Eriogonum latifolium 0 Initial No 1 110 Coastal Scrub Eriogonum latifolium 0 Initial No 1 111 Coastal Scrub Eriogonum latifolium 0 Initial No 1 113 Coastal Scrub Eriogonum latifolium 0 Initial No 1 115 Coastal Scrub Eriogonum latifolium 0 Initial No 1 116 Coastal Scrub Eriogonum latifolium 0 Initial No 1 119 Coastal Scrub Eriogonum latifolium 0 Initial No 1 120 Coastal Scrub Eriogonum latifolium 0 Initial No 1 122 Coastal Scrub Eriogonum latifolium 0 Initial No 1 124 Coastal Scrub Eriogonum latifolium 0 Initial No 1 125 Coastal Scrub Eriogonum latifolium 0 Initial No 1 128 Coastal Scrub Eriogonum latifolium 0 Initial No 1 130 Coastal Scrub Eriogonum latifolium 0 Initial No 1 131 Coastal Scrub Eriogonum latifolium 0 Initial No 1 416 Coastal Scrub Eriophyllum confertiflorum 0 2019 No 1 417 Coastal Scrub Eriophyllum confertiflorum 0 2019 No 1 418 Coastal Scrub Eriophyllum confertiflorum 0 2019 No 1 419 Coastal Scrub Eriophyllum confertiflorum 0 2019 No 1 420 Coastal Scrub Eriophyllum confertiflorum 0 2019 No 1 44 Coastal Scrub Fremontodendron californicum 4 Initial No 1 72 Coastal Scrub Fremontodendron californicum 4 Initial No 1 114 Coastal Scrub Fremontodendron californicum 3 Initial No 1 414 Coastal Scrub Fremontodendron californicum 2 2019 Yes 1 86 Coastal Scrub Melaleuca quinquenervia 4 Initial No 1 150 Coastal Scrub Melaleuca quinquenervia 3 Initial No 1 80 Coastal Scrub Morella californica 4 Initial No 1 96 Coastal Scrub Morella californica 4 Initial No 1 126 Coastal Scrub Morella californica 4 Initial No 1 129 Coastal Scrub Salvia sp. 0 Initial No

September 2020 Stillwater Sciences C-3 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 1 133 Coastal Scrub Salvia sp. 0 Initial No 1 415 Coastal Scrub Salvia spathacea 0 2019 No 1 427 Coastal Scrub Sambucus nigra 2 2019 Yes 1 2 Coastal Scrub Sporobolus sp. 4 Initial No 1 66 Coastal Scrub Sporobolus sp. 0 Initial No 1 79 Coastal Scrub Sporobolus sp. 4 Initial No 1 88 Coastal Scrub Sporobolus sp. 4 Initial No 1 144 Coastal Scrub Sporobolus sp. 2 Initial No 2 159 Coastal Grassland Elymus condensatus 0 Initial Yes 2 160 Coastal Grassland Elymus condensatus 0 Initial Yes 2 161 Coastal Grassland Elymus condensatus 0 Initial Yes 2 162 Coastal Grassland Elymus condensatus 1 Initial Yes 2 163 Coastal Grassland Elymus condensatus 1 Initial Yes 2 164 Coastal Grassland Elymus condensatus 1 Initial Yes 2 165 Coastal Grassland Elymus condensatus 1 Initial Yes 2 167 Coastal Grassland Elymus condensatus 1 Initial Yes 2 169 Coastal Grassland Elymus condensatus 1 Initial Yes 2 170 Coastal Grassland Elymus condensatus 1 Initial Yes 2 171 Coastal Grassland Elymus condensatus 0 Initial No 2 172 Coastal Grassland Elymus condensatus 1 Initial Yes 2 173 Coastal Grassland Elymus condensatus 1 Initial Yes 2 174 Coastal Grassland Elymus condensatus 1 Initial Yes 2 175 Coastal Grassland Elymus condensatus 1 Initial Yes 2 176 Coastal Grassland Elymus condensatus 1 Initial Yes 2 178 Coastal Grassland Elymus condensatus 1 Initial Yes 2 179 Coastal Grassland Elymus condensatus 1 Initial Yes 2 181 Coastal Grassland Elymus condensatus 1 Initial Yes 2 182 Coastal Grassland Elymus condensatus 1 Initial Yes 2 183 Coastal Grassland Elymus condensatus 1 Initial Yes 2 185 Coastal Grassland Elymus condensatus 1 Initial Yes 2 186 Coastal Grassland Elymus condensatus 1 Initial Yes 2 187 Coastal Grassland Elymus condensatus 1 Initial Yes 2 225 Coastal Grassland Elymus condensatus 2 Initial No 2 230 Coastal Grassland Elymus condensatus 0 Initial No 2 231 Coastal Grassland Elymus condensatus 2 Initial No 2 233 Coastal Grassland Elymus condensatus 2 Initial No 2 234 Coastal Grassland Elymus condensatus 2 Initial No 2 235 Coastal Grassland Elymus condensatus 2 Initial No 2 236 Coastal Grassland Elymus condensatus 2 Initial No 2 237 Coastal Grassland Elymus condensatus 2 Initial No 2 238 Coastal Grassland Elymus condensatus 2 Initial No 2 239 Coastal Grassland Elymus condensatus 2 Initial No 2 242 Coastal Grassland Elymus condensatus 2 Initial No 2 243 Coastal Grassland Elymus condensatus 2 Initial No 2 246 Coastal Grassland Elymus condensatus 2 Initial No 2 247 Coastal Grassland Elymus condensatus 2 Initial No 2 248 Coastal Grassland Elymus condensatus 2 Initial No 2 249 Coastal Grassland Elymus condensatus 2 Initial No 2 254 Coastal Grassland Elymus condensatus 2 Initial No 2 259 Coastal Grassland Elymus condensatus 2 Initial No 2 261 Coastal Grassland Elymus condensatus 2 Initial No 2 263 Coastal Grassland Elymus condensatus 2 Initial No

September 2020 Stillwater Sciences C-4 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 2 264 Coastal Grassland Elymus condensatus 2 Initial No 2 265 Coastal Grassland Elymus condensatus 2 Initial No 2 266 Coastal Grassland Elymus condensatus 2 Initial No 2 267 Coastal Grassland Elymus condensatus 2 Initial No 2 268 Coastal Grassland Elymus condensatus 2 Initial No 2 270 Coastal Grassland Elymus condensatus 2 Initial No 2 271 Coastal Grassland Elymus condensatus 2 Initial No 2 166 Coastal Grassland Hesperocyparis macrocarpa 0 Initial No 2 195 Coastal Grassland Sporobolus sp. 3 Initial No 2 197 Coastal Grassland Sporobolus sp. 3 Initial No 2 202 Coastal Grassland Sporobolus sp. 3 Initial No 2 207 Coastal Grassland Sporobolus sp. 3 Initial No 2 210 Coastal Grassland Sporobolus sp. 3 Initial No 2 211 Coastal Grassland Sporobolus sp. 3 Initial No 2 212 Coastal Grassland Sporobolus sp. 3 Initial No 2 214 Coastal Grassland Sporobolus sp. 3 Initial No 2 215 Coastal Grassland Sporobolus sp. 3 Initial No 2 218 Coastal Grassland Sporobolus sp. 3 Initial No 2 220 Coastal Grassland Sporobolus sp. 3 Initial No 2 221 Coastal Grassland Sporobolus sp. 3 Initial No 2 222 Coastal Grassland Sporobolus sp. 3 Initial No 2 275 Coastal Grassland Sporobolus sp. 3 Initial No 2 277 Coastal Grassland Sporobolus sp. 3 Initial No 2 278 Coastal Grassland Sporobolus sp. 3 Initial No 2 279 Coastal Grassland Sporobolus sp. 3 Initial No 2 280 Coastal Grassland Sporobolus sp. 3 Initial No 2 168 Coastal Scrub Muhlenbergia rigens 3 Initial No 2 177 Coastal Scrub Muhlenbergia rigens 3 Initial No 2 188 Coastal Scrub Muhlenbergia rigens 3 Initial No 2 190 Coastal Scrub Muhlenbergia rigens 3 Initial No 2 191 Coastal Scrub Muhlenbergia rigens 3 Initial No 3 287 Bioretention area Fremontodendron californicum 4 Initial No 3 295 Bioretention area Fremontodendron californicum 4 Initial No 3 304 Bioretention area Fremontodendron californicum 4 Initial No 3 JP Indiv 001 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 002 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 003 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 004 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 005 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 006 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 007 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 008 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 009 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 010 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 011 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 012 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 013 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 014 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 015 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 016 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 017 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 018 Bioretention area Juncus patens 4 Initial No

September 2020 Stillwater Sciences C-5 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 3 JP Indiv 019 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 020 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 021 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 022 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 023 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 024 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 025 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 026 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 027 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 028 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 029 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 030 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 031 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 032 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 033 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 034 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 035 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 036 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 037 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 038 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 039 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 040 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 041 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 042 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 043 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 044 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 045 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 046 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 047 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 048 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 049 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 050 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 051 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 052 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 053 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 054 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 055 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 056 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 057 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 058 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 059 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 060 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 061 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 062 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 063 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 064 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 065 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 066 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 067 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 068 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 069 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 070 Bioretention area Juncus patens 4 Initial No

September 2020 Stillwater Sciences C-6 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 3 JP Indiv 071 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 072 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 073 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 074 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 075 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 076 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 077 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 078 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 079 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 080 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 081 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 082 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 083 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 084 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 085 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 086 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 087 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 088 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 089 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 090 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 091 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 092 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 093 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 094 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 095 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 096 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 097 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 098 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 099 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 100 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 101 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 102 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 103 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 104 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 105 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 106 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 107 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 108 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 109 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 110 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 111 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 112 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 113 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 114 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 115 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 116 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 117 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 118 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 119 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 120 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 121 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 122 Bioretention area Juncus patens 4 Initial No

September 2020 Stillwater Sciences C-7 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 3 JP Indiv 123 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 124 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 125 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 126 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 127 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 128 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 129 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 130 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 131 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 132 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 133 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 134 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 135 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 136 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 137 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 138 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 139 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 140 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 141 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 142 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 143 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 144 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 145 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 146 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 147 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 148 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 149 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 150 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 151 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 152 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 153 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 154 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 155 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 156 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 157 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 158 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 159 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 160 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 161 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 162 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 163 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 164 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 165 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 166 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 167 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 168 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 169 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 170 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 171 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 172 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 173 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 174 Bioretention area Juncus patens 4 Initial No

September 2020 Stillwater Sciences C-8 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 3 JP Indiv 175 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 176 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 177 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 178 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 179 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 180 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 181 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 182 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 183 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 184 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 185 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 186 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 187 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 188 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 189 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 190 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 191 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 192 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 193 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 194 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 195 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 196 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 197 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 198 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 199 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 200 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 201 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 202 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 203 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 204 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 205 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 206 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 207 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 208 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 209 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 210 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 211 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 212 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 213 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 214 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 215 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 216 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 217 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 218 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 219 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 220 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 221 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 222 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 223 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 224 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 225 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 226 Bioretention area Juncus patens 4 Initial No

September 2020 Stillwater Sciences C-9 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 3 JP Indiv 227 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 228 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 229 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 230 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 231 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 232 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 233 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 234 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 235 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 236 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 237 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 238 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 239 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 240 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 241 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 242 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 243 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 244 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 245 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 246 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 247 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 248 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 249 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 250 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 251 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 252 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 253 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 254 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 255 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 256 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 257 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 258 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 259 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 260 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 261 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 262 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 263 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 264 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 265 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 266 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 267 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 268 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 269 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 270 Bioretention area Juncus patens 4 Initial No 3 JP Indiv 271 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 272 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 273 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 274 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 275 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 276 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 277 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 278 Bioretention area Juncus patens 3 Initial No

September 2020 Stillwater Sciences C-10 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 3 JP Indiv 279 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 280 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 281 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 282 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 283 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 284 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 285 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 286 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 287 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 288 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 289 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 290 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 291 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 292 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 293 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 294 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 295 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 296 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 297 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 298 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 299 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 300 Bioretention area Juncus patens 3 Initial No 3 JP Indiv 301 Bioretention area Juncus patens 1 Initial No 3 JP Indiv 302 Bioretention area Juncus patens 1 Initial No 3 JP Indiv 303 Bioretention area Juncus patens 1 Initial No 3 286 Bioretention area Morella californica 4 Initial No 3 303 Bioretention area Morella californica 4 Initial No 3 281 Bioretention area Romneya coulteri 0 Initial No 3 282 Bioretention area Romneya coulteri 0 Initial No 3 283 Bioretention area Romneya coulteri 2 Initial No 3 284 Bioretention area Romneya coulteri 0 Initial No 3 285 Bioretention area Romneya coulteri 0 Initial No 3 290 Bioretention area Romneya coulteri 0 Initial No 3 291 Bioretention area Romneya coulteri 0 Initial No 3 292 Bioretention area Romneya coulteri 0 Initial No 3 293 Bioretention area Romneya coulteri 0 Initial No 3 294 Bioretention area Romneya coulteri 0 Initial No 3 296 Bioretention area Romneya coulteri 0 Initial No 3 297 Bioretention area Romneya coulteri 0 Initial No 3 300 Bioretention area Romneya coulteri 0 Initial No 3 301 Bioretention area Romneya coulteri 0 Initial No 3 288 Bioretention area Salix lasiandra 4 Initial No 3 289 Bioretention area Salix lasiolepis 4 Initial No 3 298 Bioretention area Salix lasiolepis 4 Initial No 3 299 Bioretention area Salix lasiolepis 4 Initial No 3 302 Bioretention area Salix lasiolepis 4 Initial No 3 SS Indiv 01 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 02 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 03 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 04 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 05 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 06 Bioretention area Sporobolus sp. 4 Initial No

September 2020 Stillwater Sciences C-11 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 3 SS Indiv 07 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 08 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 09 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 10 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 11 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 12 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 13 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 14 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 15 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 16 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 17 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 18 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 19 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 20 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 21 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 22 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 23 Bioretention area Sporobolus sp. 4 Initial No 3 SS Indiv 24 Bioretention area Sporobolus sp. 3 Initial No 3 SS Indiv 25 Bioretention area Sporobolus sp. 3 Initial No 3 SS Indiv 26 Bioretention area Sporobolus sp. 3 Initial No 3 SS Indiv 27 Bioretention area Sporobolus sp. 2 Initial No 3 SS Indiv 28 Bioretention area Sporobolus sp. 2 Initial No 3 SS Indiv 29 Bioretention area Sporobolus sp. 2 Initial No 3 SS Indiv 30 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 31 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 32 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 33 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 34 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 35 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 36 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 37 Bioretention area Sporobolus sp. 0 Initial No 3 SS Indiv 38 Bioretention area Sporobolus sp. 0 Initial No 4 180 Coastal Grassland Alstroemeria sp. 0 Initial No 4 203 Coastal Grassland Alstroemeria sp. 0 Initial No 4 227 Coastal Grassland Alstroemeria sp. 0 Initial No 4 228 Coastal Grassland Alstroemeria sp. 0 Initial No 4 229 Coastal Grassland Alstroemeria sp. 0 Initial No 4 240 Coastal Grassland Alstroemeria sp. 0 Initial No 4 257 Coastal Grassland Alstroemeria sp. 0 Initial No 4 213 Coastal Grassland Erigeron glaucus 0 Initial No 4 252 Coastal Grassland Erigeron glaucus 0 Initial No 4 407 Coastal Grassland Eriophyllum sp. 3 2019 No 4 430 Coastal Grassland Malacothamnus fremontii 3 2019 Yes 4 272 Coastal Grassland Plantago subnuda 0 Initial No 4 273 Coastal Grassland Plantago subnuda 0 Initial No 4 276 Coastal Grassland Plantago subnuda 0 Initial No 4 426 Coastal Grassland Salvia leucophylla 4 2019 No 4 269 Coastal Grassland unknown dead 0 Initial No 4 274 Coastal Grassland unknown dead 0 Initial No 4 151 Coastal Grassland Watsonia sp. 4 Initial No 4 152 Coastal Grassland Watsonia sp. 3 Initial No 4 153 Coastal Grassland Watsonia sp. 4 Initial No

September 2020 Stillwater Sciences C-12 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 4 154 Coastal Grassland Watsonia sp. 0 Initial No 4 155 Coastal Grassland Watsonia sp. 2 Initial No 4 156 Coastal Grassland Watsonia sp. 3 Initial No 4 157 Coastal Grassland Watsonia sp. 4 Initial No 4 158 Coastal Grassland Watsonia sp. 0 Initial No 4 244 Coastal Grassland Watsonia sp. 4 Initial No 4 253 Coastal Grassland Watsonia sp. 4 Initial No 4 262 Coastal Grassland Watsonia sp. 2 Initial No 4 192 Coastal Scrub Alstroemeria sp. 0 Initial No 4 199 Coastal Scrub Alstroemeria sp. 0 Initial No 4 401 Coastal Scrub Baccharis pilularis 4 2019 Yes 4 410 Coastal Scrub Baccharis pilularis 4 2019 No 4 399 Coastal Scrub Diplacus aurantiacus 0 2019 Yes 4 400 Coastal Scrub Diplacus aurantiacus 0 2019 No 4 404 Coastal Scrub Diplacus aurantiacus 3 2019 No 4 422 Coastal Scrub Diplacus aurantiacus 3 2019 No 4 423 Coastal Scrub Diplacus aurantiacus 3 2019 No 4 184 Coastal Scrub Erigeron glaucus 4 Initial No 4 219 Coastal Scrub Erigeron glaucus 0 Initial No 4 245 Coastal Scrub Erigeron glaucus 0 Initial No 4 402 Coastal Scrub Eriophyllum sp. 0 2019 No 4 411 Coastal Scrub Eriophyllum sp. 0 2019 No 4 424 Coastal Scrub Malacothamnus fremontii 3 2019 Yes 4 428 Coastal Scrub Malacothamnus fremontii 2 2019 Yes 4 429 Coastal Scrub Malacothamnus fremontii 3 2019 Yes 4 250 Coastal Scrub Plantago subnuda 0 Initial No 4 258 Coastal Scrub Plantago subnuda 0 Initial No 4 425 Coastal Scrub Salvia leucophylla 3 2019 Yes 4 193 Coastal Scrub Salvia sp. 0 Initial No 4 194 Coastal Scrub Salvia sp. 0 Initial No 4 200 Coastal Scrub Salvia sp. 0 Initial No 4 205 Coastal Scrub Salvia sp. 0 Initial No 4 208 Coastal Scrub Salvia sp. 2 Initial No 4 209 Coastal Scrub Salvia sp. 3 Initial No 4 216 Coastal Scrub Salvia sp. 3 Initial No 4 224 Coastal Scrub Salvia sp. 0 Initial No 4 226 Coastal Scrub Salvia sp. 0 Initial No 4 232 Coastal Scrub Salvia sp. 0 Initial No 4 241 Coastal Scrub Salvia sp. 2 Initial No 4 251 Coastal Scrub Salvia sp. 0 Initial No 4 255 Coastal Scrub Salvia sp. 3 Initial No 4 256 Coastal Scrub Salvia sp. 0 Initial No 4 260 Coastal Scrub Salvia sp. 0 Initial No 4 398 Coastal Scrub Salvia spathacea 3 2019 No 4 405 Coastal Scrub Salvia spathacea 2 2019 No 4 189 Coastal Scrub Watsonia sp. 2 Initial No 4 196 Coastal Scrub Watsonia sp. 1 Initial No 4 198 Coastal Scrub Watsonia sp. 3 Initial No 4 204 Coastal Scrub Watsonia sp. 3 Initial No 4 206 Coastal Scrub Watsonia sp. 2 Initial No 4 217 Coastal Scrub Watsonia sp. 2 Initial No 4 223 Coastal Scrub Watsonia sp. 2 Initial No

September 2020 Stillwater Sciences C-13 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 5 371 Coastal Grassland Salvia sp. 0 Initial No 5 373 Coastal Grassland Salvia sp. 0 Initial No 5 378 Coastal Grassland Salvia sp. 0 Initial No 5 331 Coastal Scrub Calandrinia spectabilis 0 Initial Yes 5 332 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 333 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 334 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 335 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 336 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 337 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 338 Coastal Scrub Calandrinia spectabilis 1 Initial Yes 5 339 Coastal Scrub Calandrinia spectabilis 2 Initial Yes 5 340 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 341 Coastal Scrub Calandrinia spectabilis 1 Initial Yes 5 342 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 343 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 345 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 346 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 347 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 348 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 349 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 350 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 351 Coastal Scrub Calandrinia spectabilis 3 Initial No 5 352 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 353 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 354 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 355 Coastal Scrub Calandrinia spectabilis 2 Initial No 5 356 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 357 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 358 Coastal Scrub Calandrinia spectabilis 3 Initial No 5 359 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 360 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 361 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 362 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 363 Coastal Scrub Calandrinia spectabilis 1 Initial No 5 364 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 365 Coastal Scrub Calandrinia spectabilis 0 Initial No 5 GC Indiv 01 Coastal Scrub Grindelia camporum 4 Initial Yes 5 GC Indiv 02 Coastal Scrub Grindelia camporum 4 Initial Yes 5 GC Indiv 03 Coastal Scrub Grindelia camporum 4 Initial Yes 5 GC Indiv 04 Coastal Scrub Grindelia camporum 4 Initial Yes 5 GC Indiv 05 Coastal Scrub Grindelia camporum 4 Initial Yes 5 GC Indiv 06 Coastal Scrub Grindelia camporum 4 Initial Yes 5 GC Indiv 07 Coastal Scrub Grindelia camporum 4 Initial Yes 5 GC Indiv 08 Coastal Scrub Grindelia camporum 2 Initial Yes 5 GC Indiv 09 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 10 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 11 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 12 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 13 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 14 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 15 Coastal Scrub Grindelia camporum 0 Initial Yes

September 2020 Stillwater Sciences C-14 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 5 GC Indiv 16 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 17 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 18 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 19 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 20 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 21 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 22 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 23 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 24 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 25 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 26 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 27 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 28 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 29 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 30 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 31 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 32 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 33 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 34 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 35 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 36 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 37 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 38 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 39 Coastal Scrub Grindelia camporum 0 Initial Yes 5 GC Indiv 40 Coastal Scrub Grindelia camporum 0 Initial Yes 5 305 Coastal Scrub Lupinus arboreus 0 Initial No 5 306 Coastal Scrub Lupinus arboreus 0 Initial No 5 307 Coastal Scrub Lupinus arboreus 0 Initial No 5 308 Coastal Scrub Lupinus arboreus 0 Initial No 5 309 Coastal Scrub Lupinus arboreus 0 Initial No 5 310 Coastal Scrub Lupinus arboreus 0 Initial No 5 311 Coastal Scrub Lupinus arboreus 0 Initial No 5 312 Coastal Scrub Lupinus arboreus 3 Initial No 5 313 Coastal Scrub Lupinus arboreus 0 Initial No 5 316 Coastal Scrub Lupinus arboreus 0 Initial No 5 318 Coastal Scrub Lupinus arboreus 4 Initial No 5 322 Coastal Scrub Lupinus arboreus 4 Initial No 5 325 Coastal Scrub Lupinus arboreus 4 Initial No 5 328 Coastal Scrub Lupinus arboreus 4 Initial No 5 375 Coastal Scrub Lupinus arboreus 0 Initial No 5 381 Coastal Scrub Lupinus arboreus 0 Initial No 5 384 Coastal Scrub Lupinus arboreus 0 Initial No 5 385 Coastal Scrub Lupinus arboreus 0 Initial No 5 388 Coastal Scrub Lupinus arboreus 2 Initial No 5 389 Coastal Scrub Lupinus arboreus 0 Initial No 5 391 Coastal Scrub Lupinus arboreus 0 Initial No 5 392 Coastal Scrub Lupinus arboreus 0 Initial No 5 393 Coastal Scrub Lupinus arboreus 0 Initial No 5 394 Coastal Scrub Lupinus arboreus 0 Initial No 5 395 Coastal Scrub Lupinus arboreus 0 Initial No 5 396 Coastal Scrub Lupinus arboreus 0 Initial No 5 344 Coastal Scrub Lyonothamnus floribundus 4 Initial No

September 2020 Stillwater Sciences C-15 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Plot Plant ID Habitat type Scientific name Vigor Planted Trimmed? 5 397 Coastal Scrub Romneya coulteri 0 Initial No 5 314 Coastal Scrub Salvia sonomensis 4 Initial No 5 315 Coastal Scrub Salvia sonomensis 4 Initial No 5 317 Coastal Scrub Salvia sonomensis 4 Initial No 5 319 Coastal Scrub Salvia sonomensis 0 Initial No 5 320 Coastal Scrub Salvia sonomensis 4 Initial No 5 321 Coastal Scrub Salvia sonomensis 4 Initial No 5 323 Coastal Scrub Salvia sonomensis 4 Initial No 5 324 Coastal Scrub Salvia sonomensis 0 Initial No 5 326 Coastal Scrub Salvia sonomensis 3 Initial No 5 327 Coastal Scrub Salvia sonomensis 2 Initial No 5 329 Coastal Scrub Salvia sonomensis 0 Initial No 5 330 Coastal Scrub Salvia sonomensis 0 Initial No 5 366 Coastal Scrub Salvia sp. 0 Initial No 5 367 Coastal Scrub Salvia sp. 0 Initial No 5 368 Coastal Scrub Salvia sp. 0 Initial No 5 369 Coastal Scrub Salvia sp. 0 Initial No 5 370 Coastal Scrub Salvia sp. 0 Initial No 5 372 Coastal Scrub Salvia sp. 0 Initial No 5 374 Coastal Scrub Salvia sp. 0 Initial No 5 376 Coastal Scrub Salvia sp. 4 Initial No 5 377 Coastal Scrub Salvia sp. 0 Initial No 5 379 Coastal Scrub Salvia sp. 3 Initial No 5 380 Coastal Scrub Salvia sp. 4 Initial No 5 382 Coastal Scrub Salvia sp. 0 Initial No 5 383 Coastal Scrub Salvia sp. 0 Initial No 5 386 Coastal Scrub Salvia sp. 3 Initial No 5 387 Coastal Scrub Salvia sp. 0 Initial No 5 390 Coastal Scrub Salvia sp. 0 Initial No

September 2020 Stillwater Sciences C-16 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Table C-2. Percent cover in quadrats by species for Year 4.

Relative cover Quadrat Cal-IPC Absolute Vegetation type Soil/Bare/ Scientific name Native? ID Vegetation Litter status? cover Rock Medicago polymorpha Naturalized Limited 25 Achillea millefolium Native None 14 RP1 Coastal Scrub 50 40 10 Festuca rubra Native None 12 Elymus glaucus Native None 5 Sporobolus airoides Native None 15 Plantago coronopus Naturalized None 12 Achillea millefolium Native None 3 Festuca rubra Native None 60 RP2 Coastal Scrub 72 25 3 Medicago lupulina Naturalized None 4 Erigeron canadensis Native None Trace Cortaderia jubata Naturalized High 3 Sisyrinchium bellum Native None 1 Festuca rubra Native None 73 Achillea millefolium Native None 6 RP3 Coastal Scrub 82 15 3 Plantago coronopus Naturalized None 1 Elymus glaucus Native None 2 Medicago polymorpha Naturalized Limited Trace

September 2020 Stillwater Sciences C-16 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Relative cover Quadrat Cal-IPC Absolute Vegetation type Soil/Bare/ Scientific name Native? ID Vegetation Litter status? cover Rock Medicago lupulina Naturalized None 12 Achillea millefolium Native None 12 Festuca rubra Native None 42 Diplacus aurantiacus Native None 2 RP4 Coastal Scrub 75 22 3 Plantago coronopus Naturalized None 2 Elymus glaucus Native None 3 Stipa pulchra Native None 5 Hypochaeris radicata Naturalized Moderate Trace Stipa pulchra Native None 10 Festuca rubra Native None 65 Achillea millefolium Native None 3 RP5 Coastal Grassland 85 13 2 Medicago polymorpha Naturalized Limited 9 Plantago coronopus Naturalized None 8 Elymus glaucus Native None 2 Elymus triticoides Native None 15 Acmispon glaber Native None 2 Morella californica Native None 8 RP6 Coastal Scrub 60 25 15 Festuca rubra Native None 25 Erigeron glaucus Native None 8 Medicago lupulina Naturalized None 1 Achillea millefolium Native None 4

September 2020 Stillwater Sciences C-17 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Relative cover Quadrat Cal-IPC Absolute Vegetation type Soil/Bare/ Scientific name Native? ID Vegetation Litter status? cover Rock Medicago polymorpha Naturalized Limited 15 Carex pansa Native None 25 Pseudognaphalium RP7 Meadow Lawn 99 0 1 Naturalized None 2 luteoalbum Polypogon viridis Naturalized None 10 Festuca rubra Native None 80 Plantago subnuda Native None 5 Melilotus indicus Naturalized None Trace Medicago polymorpha Naturalized Limited 1 RP8 Meadow Lawn 25 73 2 Carex pansa Native None 3 Festuca rubra Native None 18 Polypogon viridis Naturalized None Trace Plantago coronopus Naturalized None 30 Helminthotheca echioides Naturalized Limited 2 RP9 Meadow Lawn 85 10 5 Festuca rubra Native None 55 Carex pansa Native None 5 Elymus glaucus Native None 5 Festuca rubra Native None 80 Achillea millefolium Native None 5 RP10 Coastal Scrub 91 7 2 Medicago polymorpha Naturalized Limited 1 Carex pansa Native None 3 Lactuca serriola Naturalized None 1 Hypochaeris radicata Naturalized Moderate 1

September 2020 Stillwater Sciences C-18 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Relative cover Quadrat Cal-IPC Absolute Vegetation type Soil/Bare/ Scientific name Native? ID Vegetation Litter status? cover Rock Achillea millefolium Native None 12 Festuca rubra Native None 60 RP11 Meadow Lawn 70 10 20 Plantago coronopus Naturalized None 8 Polypogon viridis Naturalized None 6 Lactuca serriola Naturalized None Trace Plantago coronopus Naturalized None 20 Medicago polymorpha Naturalized Limited 8 Achillea millefolium Native None 3 Carex pansa Native None 5 Festuca rubra Native None 30 RP12 Meadow Lawn 95 4 1 Elymus glaucus Native None 4 Pseudognaphalium Naturalized None Trace luteoalbum Erigeron bonariensis Naturalized None Trace Polypogon viridis Naturalized None 25 Hypochaeris radicata Naturalized Moderate 3 Plantago coronopus Naturalized None 6 Erigeron glaucus Native None 22 RP13 Coastal Grassland 75 10 15 Festuca rubra Native None 55 Plantago subnuda Native None 2 Erigeron canadensis Native None 1

September 2020 Stillwater Sciences C-19 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Relative cover Quadrat Cal-IPC Absolute Vegetation type Soil/Bare/ Scientific name Native? ID Vegetation Litter status? cover Rock Festuca rubra Native None 65 Medicago lupulina Naturalized None 12 RP14 Coastal Grassland 85 5 10 Unknown grass (no seeds) 0 #N/A 18 Plantago coronopus Naturalized None 6 Helminthotheca echioides Naturalized Limited 1 Acmispon glaber Native None 25 Helminthotheca echioides Naturalized Limited 6 Plantago coronopus Naturalized None 8 RP15 Coastal Grassland 96 3 1 Festuca rubra Native None 65 Elymus glaucus Native None 2 Medicago lupulina Naturalized None 12 Achillea millefolium Native None 4 Achillea millefolium Native None 3 Festuca rubra Native None 75 RP16 Coastal Grassland 83 2 15 Plantago coronopus Naturalized None 10 Helminthotheca echioides Naturalized Limited 1 Sisyrinchium bellum Native None Trace Morella californica Native None 8 Muhlenbergia rigens Native None 15 RP17 Coastal Scrub 58 6 36 Elymus glaucus Native None 7 Festuca rubra Native None 30

September 2020 Stillwater Sciences C-20 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Relative cover Quadrat Cal-IPC Absolute Vegetation type Soil/Bare/ Scientific name Native? ID Vegetation Litter status? cover Rock Achillea millefolium Native None 20 Foeniculum vulgare Naturalized Moderate 3 RP18 Coastal Grassland 99 1 0 Plantago coronopus Naturalized None 5 Festuca rubra Native None 90 Plantago coronopus Naturalized None 5 Stipa pulchra Native None 18 Fremontodendron Native None 30 californicum RP19 Coastal Scrub 45 30 25 Festuca rubra Native None 8 Medicago lupulina Naturalized None 3 Lotus corniculatus Naturalized None 2 Festuca myuros Naturalized Moderate 2 Baccharis pilularis Native None Trace Elymus triticoides Native None 25 Bioretention Juncus patens Native None 40 RP20 95 3 2 Areas Festuca rubra Native None 40 Sporobolus airoides Native None 3 Salix laevigata Native None 80 Juncus patens Native None 6 Bioretention Achillea millefolium Native None 2 RP21 80 2 18 Areas Festuca arundinacea Naturalized Moderate 10 Sporobolus airoides Native None 40 Polygonum sp. Naturalized None 2

September 2020 Stillwater Sciences C-21 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Relative cover Quadrat Cal-IPC Absolute Vegetation type Soil/Bare/ Scientific name Native? ID Vegetation Litter status? cover Rock Polypogon monspeliensis Naturalized Limited 15 Epilobium ciliatum Native None 3 Bioretention Festuca rubra Native None 30 RP22 78 2 20 Areas Lactuca serriola Naturalized None 4 Sonchus oleraceus Naturalized None 2 Elymus glaucus Native None 40 Salix lasiolepis Native None 95 Bioretention RP23 95 5 0 Elymus triticoides Native None 8 Areas Festuca rubra Native None 3 Muhlenbergia rigens Native None 20 Epilobium ciliatum Native None 5 Bioretention Helminthotheca echioides Naturalized Limited 30 RP24 85 14 1 Areas Erigeron canadensis Native None 4 Salix lasiolepis Native None 85 Festuca rubra Native None 8

September 2020 Stillwater Sciences C-22 Final Year 4 Plant Monitoring Report PG&E Hunters Point Power Plant Project

Appendix D

Photo Points

September 2020 Stillwater Sciences

Photo D-1a. Photo point 1, facing North, showing Coastal Grassland.

Photo D-1b. Photo point 1, facing West, showing Coastal Grassland.

September 2020 Stillwater Sciences D-1

Photo D-2. Photo point 2, facing South, showing Coastal Grassland.

Photo D-3. Photo point 3, facing North, showing Coastal Scrub.

September 2020 Stillwater Sciences D-2

Photo D-4. Photo point 4, facing North, showing Coastal Scrub.

Photo D-5a. Photo point 5, facing North, showing Coastal Grassland and Coastal Scrub.

September 2020 Stillwater Sciences D-3

Photo D-5b. Photo point 5, facing South, showing Meadow Lawn.

Photo D-6a. Photo point 6, facing East, showing Coastal Grassland.

September 2020 Stillwater Sciences D-4

Photo D-6b. Photo point 6, facing Southeast, showing Coastal Grassland.

Photo D-7a. Photo point 7, facing Southwest, showing Coastal Scrub and Coastal Grassland.

September 2020 Stillwater Sciences D-5

Photo D-7b. Photo point 7, facing North, showing Coastal Scrub and Coastal Grassland.

Photo D-8. Photo point 8, facing Southwest, showing Bioretention Areas.

September 2020 Stillwater Sciences D-6

Photo D-9. Photo point 9, facing North, showing Coastal Scrub.

Photo D-10a. Photo point 10, facing West, showing Coastal Scrub.

September 2020 Stillwater Sciences D-7

Photo D-10b. Photo point 10, facing Southeast, showing Meadow Lawn and Coastal Scrub.

Photo D-10c. Photo point 10, facing North, showing Coastal Scrub.

September 2020 Stillwater Sciences D-8

Photo D-11a. Photo point 11, facing Southeast, showing Meadow Lawn.

Photo D-11b. Photo point 11, facing West, showing Bioretention Areas.

September 2020 Stillwater Sciences D-9

Photo D-12. Photo point 12, facing Southeast, showing Coastal Scrub.

Photo D-13. Photo point 13, facing Northeast, showing Coastal Grassland.

September 2020 Stillwater Sciences D-10

Photo D-14. Photo point 14, facing Northeast, showing Meadow Lawn.

Photo D-15. Photo point 15, facing Southwest, showing Coastal Scrub and Coastal Grassland.

September 2020 Stillwater Sciences D-11

Photo D-16. Photo point 16, facing West, showing Coastal Scrub and Coastal Grassland.

Photo D-17. Photo point 17, facing North, showing Meadow Lawn.

September 2020 Stillwater Sciences D-12