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3466; OLIVEHAIN RD WIDENING AND REALIGNMENT; FIFTH ANNUAL REPORT; 2003-01-01
qp FitthyAIiRpd'it1 .'.* . .. ',---Wet la,n'd .MitigdtionAre'á: r - CCarlsbàdCálifornia ; 'K ..to Ar 49, - 2 ILI -'i.. --•- r'i'-." - •- '- all .4 ly 4 ' ... I '•; , • t J ____________________________ F P-.•- ' ____________________________ , ,.., .-.'• S.'- . - i City of Carlsbad Olivenhain Road Widening I Wetland Mitigation Area December 2002 : I TABLE OF CONTENTS • - . Page I EXECUTIVE SUMMARY ..........................................................................................................1 • 1.0 INTRODUCTION ...........................................................................................................2 I . 2.0 SUCCESS STANDARDS..............................................................................................5 3.0 MONITORING ................................................................................................................ 3.1 Horticultural Monitoring ........................................................................................6 3.1.1 Horticultural Monitoring Parameters .........................................................6 3.i.2 Seedling Establishment .... ................... .............................. .......................... 6 3.1.3 Natural Recruitment ...... ..................................................... ......................... 6 I 3.1.4 Nonnative Plant Populations.. .................................................................. .9 3. 1'.5 'Irrigation ................................................................................................... I - 3.1.6 Trash Removal ................. .. ...................................................................... 10 I . 3.1.7 Pest and Pathogen Issues ... ........................ ............................................. 10 3.2 Botanical Monitoring.......... ................................................................................. -ii I 4.0 BOTANICAL MONITORING RESULTS ...................................................................... 11 4.1 Tree and Shrub Heights ........................................................................................11 I 4.2 Container Plant Success .............................................................. 13 4.3 Percent Cover ..................................................................................................... 13 I 5.0 EVALUATION OF SUCCESS STANDARDS .................................................................. 14 • 5.1 Tree and Shrub Heights ....................... ................................................................ .15 I . 5.2 Container Plant Success ............................................................ ....................... 15 5.3 Percent Cover....................................................................................................15 I 6.0 RECOMMENDATIONS .................................................................................................15 7.0 REFERENCES ................. .............................................................................................. 16 I ;•. - LIST OF FIGURES • .. . . I Figure 1 Project Location Map .............................................................................................3 Figure2 Site Map .................................... .......................................................................... 4 Figure 3 Olivenhain Wetland Mitigation Area -wr- 2000.......................................................12 32540000-3004/3151-1202R159.doc • . . Page I . . , . . • •. . I City of Carlsbad - :. Olivenhain Road Widening I Wetland Mitigation Area December 2002 LIST OF TABLES Table 1 Olivenhain Road Wetland Mitigation Area - Horticultural and I Botanical Success Standards ............................................................................... .5 Table 2 - Species Detected from Seed Mixes for the Olivenhain Road Wetland Mitigation Area - October 2002..............................................................7 I Table 3 Olivenháin Road Wetland Mitigation Area and Flood Control Dike Floral . SpeciesList ................................ ......................................................................... 8 Table 4 Tree and Shrub Container Heights for the Olivenhain Road I Table 5 Wetland Mitigation Area ..................................................................................... Olivenhain Road Wetland Mitigation Area Percent Cover ...................... ............ .13 14 LIST OF APPENDICES I Appendix A Correspondence ................................................ .................................................. A-i Appendix B Botanical Monitoring Data .......... ...................................................................... B-i Appendix C Photographs of Transect Locations .............................................................. . .... C-i I - . I I I I I I I . -.- - I I 32540000-3004/3151-1 202R1 59.doc Page ii I - City of Carlsbad Olivenhain Road Widening Wetland Mitintinn Area December 2002 EXECUTIVE SUMMARY This is the fifth annual report for the Olivenhain Road Widening Project wetland mitigation area (mitigation area). AMEC Earth & Environmental, Inc. (AMEC) is the biological consultant responsible for the 5-year maintenance and monitoring of the mitigation area for the City of Carlsbad (City). The mitigation area is located along Encinitas Creek south of Olivenhain Road in Olivenhain, California. - AMEC conducted horticultural monitoring visits and one botanical monitoring visit in 2002. During these visits, Native Landscape, Inc. (the landscape maintenance contractor) and/or the City accompanied AMEC to the mitigation area. Horticultural monitoring is a qualitative analysis of the mitigation area including an assessment of several' horticultural parameters. Botanical monitoring is a quantitative analysis of the mitigation area including a comparison to predetermined success standards All success standards, including tree and shrub container height, container plant success and survival,'arid absolute percent cover have been achieved for the mitigation area for year 5. The irrigation success standard has not been achieved for year 5. The tree and shrub height success standard for year 5 was achieved. The specified tree height success standard is 3.4 meters and the shrub height success standard is 1.8 meters. Of the 58 trees measured in the mitigation area, 22 were container trees. The average height for container trees in the mitigation area was 4.0 meters, which achieves the height success standard of 3.4 meters. Of the 42 shrubs measured in the mitigation area, 9 were container shrubs The average height for container shrubs in the mitigation area was 3.1 meters, which achieves the height success standard of 1.8 meters. . The container tree and shrub survival success standard for year 5 has been achieved. The percent survival success standard for year 5 is 90 percent for container trees and 80 percent for container shrubs. No dead container trees or shrubs were located during the fifth year of the mitigation area. The percent cover standard for year 5 has been achieved. The percent cover success standard by all species in the mitigation area for year 4 is 90 percent. The total cover for all species after year 4 for the mitigation area is 135.8 percent. The native species cover is 135.5 percent and the nonnative species cover is .0.3 percent. Black mustard is the most dominant nonnative species with a percent 'cover of 0.2, which is extremely low. The irrigation success standard was not achieved for year 5 of the mitigation area. Irrigation was being supplied to several portions of the mitigation area but was turned off in December 2002. The irrigation success standard states that the mitigation area must be without irrigation for 1 year. The entire mitigation area will have been without irrigation for 1 year in December of 2003. , . . City of Carlsbad -. Olivenhain Road Widening Wetland Mitigation Area . December 2002 - AMEC recommends the following for year 6 of the 5-year maintenance and monitoring program: Monitor the mitigation area since it will have been taken off irrigation completely in December 2002. Make sure that the portions of the mitigation area that were previously irrigated survive for 1 year without irrigation. . Check the mitigation area for nonnative species: especially invasive species. If needed, have a landscape maintenance contractor remove these species from the mitigation area. 1.0 INTRODUCTION This is the fifth annual report for the Olivenhain Road Widening Project wetland mitigation area (mitigation area). This report covers the period from December 2001 through December 2002; AMEC Earth & Environmental, Inc. (AMEC) is the biological consultant responsible for the 5-year maintenance and monitoring of the mitigation area for the City of Carlsbad (City). The mitigation area is located along Encinitas Creek south of Olivenhain Road,. approximately. 0.8 mile east of the road widening impact area at the intersection of Olivenhain Road and El Camino Real (Figures land 2). . . . . Based on a biological survey and report (Mooney 1991), the City obtained California Department of Fish and Game (CDFG) Section 1601 Streambed Alteration Agreement No. .5-560-94 and U.S.. Army. Corps of Engineers (ACOE) Section 404 Nationwide Permit No. 95-20096-BH to construct the project. The permit requirements included the creation, planting, 5-year maintenance, and biological monitoring of 0.5 acre of wetland habitat (0.34 acre southern willow scrub and 0.16 acre freshwater marsh). The permit also addressed the 1.1-acre flood control dike located adjacent to the mitigation area. The flood control dike was seeded with a riparian scrub transitional habitat mix and container plants were installed. The flood control dike wai revegetated to prevent erosion and to create native habitat adjacent to the mitigation area. The flood control dike is separate from the mitigation area and wasnot included in the mitigation package as it was not mitigation for a loss in acreage during construction of the Olivenhain Road Widening Project. . The mitigation area was well maintained during the first 3 months following planting in late 1997 by the landscape contractor, Tarzian Landscape. After the first 3 months, the landscape contractor did not maintain the mitigation area. Weeding was not performed and gullies that had, - - formed from an off-site water source were not fixed. Some willows died due to lack of irrigation and the success of the mitigation area and flood control dike was compromised by overall lack of maintenance. No maintenance occurred on the mitigation area in 1999 or through spring 2000.1n April 2000, AMEC met with Marshall' Plantz of the City and Ardis Perr of Native Landscape, Inc. (Native Landscape) to discuss necessary remedial measures at the mitigation site. -F - .- . . 32540000-300413151-1202R159.doc -. . . -. Page F I ... . . . ... . 0• • I / City of Carlsbad I Olivenhain Road Widening Wetland Mitigation Area December 2002 In April 2001, remedial actions were implemented at the mitigation area and on the flood control dike according to recommendations made in the third annual report from 2000 (Appendix A): I Soil amendments were added to all of the growing areas on the mitigation area and 125 container plants were planted in the mitigation area and on the flood control dike. Weeding occurred for invasive and noninvasive, nonhative plants throughout the mitigation area and flood I control dike. 2.0 SUCCESS STANDARDS I . . Success standards are a set of yearly performance standards for evaluating the mitigation area progress. These success standards will be evaluated to determine when to implement remedial measures to correct deficiencies in project progress. The qualitative horticultural monitoring I data and quantitative botanical monitoring data collected will be analyzed against these success standards. Success standards for the project during years 3 through 5 are outlined in Table 1. I . . . Table OLIVENHAIN ROAD WETLAND MITIGATION AREA HORTICULTURAL AND BOTANICAL SUCCESS STANDARDS Success_Requirements . Standard Remedial Action Year 3 Year 4 Year 5 Willow Heights 2.0m , 2.7m 3.4m -. Replant or receive remedial measures, substitutions possible. Mulefat Heights 1.2m 1.5m 1.8m Replant or receive remedial measures, substitutions possible. Tree Survival Plantings' 90% 90% 90% Replant if not met. Shrub Survival Plantings' 80% 80%, 80% Replant if not met. Groundcover by All Species 75% 85% 90% Additional seed or container plantings as recommended by revegetation designer. Irrigation will gradually be All plantings must survive Final project evaluation will not be withdrawn from the through one full dry season made until the first March after revegetation/mitigation areas without supplemental irrigation, irrigation has been discontinued. during years 3 and 4. I 1 At the discretion of the revegetation monitor, dead container plants can be mitigated for by naturally invading native seedlings, if such seedlings are within 5 feet of the ónginal plantings, and of similar species or habitat value. • • I m=meters . • * - 3.0 MONITORING .• . . I The established monitoring program for the mitigation area is comprised of three purposes: (1) ensure that proper installation, maintenance, and establishment procedures are followed, I (2) quantitatively and qualitatively assess site conditions relative to defined success criteria in order to evaluate project progress, and (3) recommend remedial actions, if the project does not meet the success standards. Horticultural monitoring is the primary method for evaluating 32540000-3004/3151-1202R159.doc Page u . City of Carlsbad I Oliverthain Road Widening - Wetland Mitigation Area December 2002 achievement of establishment, and a combination of horticultural and botanical monitoring is used to evaluate achievement of the success, standards. Remedial measures are sometimes I recommended to achieve success standards. 3.1 Horticultural. Monitoring . I AMEC conducted a horticultural monitoring visitin February, May, June, and October 2002, the fifth year of the mitigation area. During these visits, Native Landscape and/or the City I . accompanied AMEC to the mitigation area. 3.1.1 Horticultural Monitoring Parameters .. I Horticultural monitoring of the mitigation area includes an assessment of the following parameters: seedling establishment, natural recruitment, nonnative weed populations, irrigation, trash removal, and pests and pathogens. The following section includes a discussion of each I horticultural parameter. '- - 3.1.2 Seedling Establishment Seedling germination and establishment are based on a variety of factors, including seasonal rainfall, aspect, soil disturbance, proximity to nonnative invasive plant speôies, seed viability, and the timing of seeding. Evaluation of this parameter includes identifying seedlings of the I species included in both the southern willow scrub and riparian scrub and upland transition zone seed mixes and following their growth and establishment. Establishment of seeded species, both with respect to diversity and density of individual species, has been good this year, taking I into account the less than average seasonal rainfall. - - Seven of nine species from the southern willow scrub seed mix and four of the eight species I from the riparian scrub and upland transition zone seed mix were observed during the fifth year in the mitigation area (Table 2). However, all of these species, except for zorro fescue (Festuca megalura) were observed in the mitigation area since installation in 1997. The majority of the I annual species planted are early successional plant species that dominate vegetation communities in early stages after fire, disturbance, or restoration. After the later successional perennial species become established, the- early successional annuals no longer dominate and I become associates within a vegetation community. 3.1.3 Natural Recruitment I In addition to planting and seeding activities, plants establishing on-site can originate from several sources, including propagules that are transported to the site by wind, water, or animal I vectors. Similarly, seeds may already occur in the soil prior to restoration activities. This natural recruitment plays an important role in increasing the diversity and density of native plant species within the restoration area. This is particularly true for this site where the mitigation project is I surrounded by healthy, well-established upland and riparian native habitats that serve as poteAtial source populations for incoming seed. Evaluation of this parameter involves identifying germinating seedlings or volunteers that were not included in the seed mix. - 32540000-3004/3151-1202R159doc - -.. Page I - - 'S City of Carlsbad - Olivenhain Road Widening Wetland Mitigation Area - December 2002 Table SPECIES DETECTED FROM SEED MIXES FOR THE OLIVENHAIN ROAD WETLAND MITIGATION AREA OCTOBER 2002 Scientific Name Common Name Detected within the Area Southern Willow Scrub Seed Mix Ambrosia psiostachya western ragweed X rtemisia douglasiana Douglas mugwort X Artemisia drancunculus .- arragon X 4tnplexpatula ssp. hastata Halberd-leaf saltbush Encelia califomica California sunflower x Festuca megalura - :orro fescue Isocoma menziesii coastal goldenbush X Leymus condensatus ' giant wild rye - X Oenothera elata ssp. hirsutissima evening primrose X - Riparian Scrub and Upland Transition Zone Seed Mix trtemisia califomica California sagebrush X Encelia califomica California sunflower X Eschscholzia califomica California poppy Festuca megalura - :orro fescue Isocoma menziesii coastal goldenbush X Leymus condensatus ' giant wild rye X Lupinus succulent us arroyo lupine Phacelia tanacetifolia . )hacelia - Nomenclature follows Hickman 1993 Natural recruitment can also occur when native species seeded or planted within an area seed on their own, thereby increasing the density of that particular species 'within the restoration area. A number of native annual and perennial species produced seed this year within the wetland mitigation area. This continuing input of native seed contributes to the recruitment of native plant' species across the mitigation area. There is a diverse abundance of naturally occurring tree and shrub species that are established in the mitigation area. All of these species established from seed that came from the established trees and shrubs in the mitigation area and flood control dike. Species such as coyote bush (Baccharis pilularis), saltgrass (Distichlis spicata), deerweed (Lotus scoparius), salt marsh fleabane (Pluchea odorata), pickleweed' (Salicornia virginica), and tall cattail (Typha latifolia) are naturally occurring species that are abundant throughout the mitigation area, all of which occur in several diverse age classes. - - 32540000-3004/3151-1202R159.doc Page y of Carlsbad venhain Road Widening- . . . tland Mitigation Area cember 2002 ible 3 is a floral species list indicating vegetative composition for the mitigation area and the iod control dike. A total of 43 species have been observed as of to date. Table . OLIVENHAIN ROAD WETLAND MITIGATION AREA AND FLOOD CONTROL DIKE FLORAL SPECIES LIST . . Scientific Name Common Name Acacia longifolla Sydney golden-wattle - Anagallis as'vensis scarlet pimpernel Anemopsis californica* yerba mansa Artemisia douglasiana* Douglas rnugwort Arlemisia drancunculus taragon Artemisia califomica . California sagebrush Artemisia palmeri* . . Palmer's sagewort Baccharis salicifolla * mulefat Baccharis pilularis* . coyote bush Brassica nigra black mustard Carpobrotus edulis - - - Hotentot fig Conium maculatum poison hemlock Conyza canadensis . horseweed Cyperus esculentus' - . * yellow nutsedge Distichlis spicata saltgrass Encelia califomica coastal sunflower Frankenia sauna * - alkali heath .Gnaphalium!uteo-album cudweed - - Heteromeles arbutifolla* .toyon - Isocoma menziesii* coastal goldenbush Isomeris arborea* - bladderpod Juncus acutus ssp. IeopoIdii* Southwestern spiny rush Leymus condensatus* . . giant wild rye Lotus scoparius . deerweed Malvella Ieprosa* . alkali mallow Me/lotus a/ba sweetchover Me/lotus indica - sourclover Qenothera elata ssp. hits utissima - evening primrose Picris echioides bristly ox-tongue - 32540000-300413151-1202R159doc ,. Page City of Carlsbad - - Olivenhain Road Widening Wetland Mitigation Area - - December 2002 Scientific Name Common Name Pluchea odorata - - salt marsh fleabane Pluchea ser1cea arrow weed Polypogon monspliensis rabbit's foot grass Pyracantha sp. firethorn Rumex cnspus curly dock Salicornia virginica*. pickléweed Salix exigua - ,. narrow-leaved willow Salix IasioIepis arroyo willow Scirpus callfomicus California bulrush Scirpus mantimus alkali bulrush Solanum douglasii black nightshade Sonchus oleraceus annual sow thistle Typha Iatifolia tall cattail Washingtonia robusta . ' Mexican fan palm Nomenclature follows Hickman 1993 * Denotes plant species native to southern California. 3.1.4 Nonnative Plant Populations The most critical period for controlling nonnative pInts is during the first 2 years of a restoration project. Control of nonnative plant populations is one of the most important factors in the success of any restoration project because invasive and nonnative plants prevent the establishment of native species-by, competing with them for important resources (Bossard et al. 2000). Weeding has occurred on a regular basis in the mitiation area by the landscape maintenance contractor. Invasive, nonnative perennial weed species such as Hotentot fig' (Cárpobrotus edulis), Sydney golden wattle (Acacia longifolia), and firethorn (Pyracantha sp.) were located in the mitigation area during the fifth year and were completely eradicated from the mitigation area. Nonnative annual species have not been al problem at the mitigation area this year due to low levels of disturbance, a high percentage of native vegetative cover, and a low percentage of bare ground. 3.1.5 Irrigation Supplemental irrigation allows container plants and seeded plants to become established in a restoration project. Irrigation can be supplied by overhead sprinklers or through drip lines. The - amount of water ãan be manipulated to help plants adapt to the climatic conditions of the area. As plants become established, irrigation is slowly reduced until the plants no longer rely on the supplemental water. At this time, usually,2 to 4 years after installation, it is assumed that the restoration project has been successful in relation to plant establishment and success. 32540000-3004/3151 1202R159 doc - -- .• .' ' . ' . - Page I. City of Carlsbad I Olivenhain Road Widening Wetland Mitigation Area December 2002 Irrigation levels were changed inhlay for the portions of the mitigation area that were still being irrigated to help wean the plants off of irrigation. The irrigation in these two areas was * I completely shut off in December 2002. . The majority of the mitigation area is self-supporting and no longr requires irrigation. Only two I areas, the western portion of the mitigation area,' which consists of southern willow scrub, freshwater marsh, and 1-year-old container plants, and the northern portion of the flood control dike, which consists of upland riparian scrub transitional habitat and 1.-year-old container plants, I are not self-supporting and required irrigation through 2002. The success standards state that the mitigation area will be without irrigation for 1 year. The mitigation area will have been without I irrigation for 1 year in December 2003. .: 3.1.6 Trash Removal . I Human associated trash and debris can accumulate in mitigation areas especially if they are located near urban centers, used for homeless encampments, or used by recreationalists. It is the responsibility of the landscape maintenance contractor to remove the trash and debris froth I the mitigation area. . Trash has not been,an issue in the mitigation area during year 5. It is not anticipated that trash I . will become an issue due to the dense vegetation at the mitigation area and since the majority of the mitigation area is fenced. . . I 3.1.7 Pest and Pathogen Issues A number of animal or insect species can become pests within restoration sites if their I populations are not controlled or measures are not initiated to reduce their effect. Similarly, some plant diseases can have a devastating effect if the symptoms are not identified early and remedial actions are not employed. Many of the pests and diseases observed in restoration sites are naturally occufring and are often seasonally fluctuating events. A proactive I ' management program identifies and evaluates these issues, providing remedial measures when site success is jeopardized. . . I One disease, sooty mold was located on Douglas mugwort (Artemisia douglasiara), western ragweed (Ambrosia psiiostachya), and California encelia (Encelia cailfornica) in a small portion of the eastern side of the mitigation area. Sooty mold is a black fungus that appears as a black I coating on the leaves and stems of plants. Sooty mold can take hold of plants that have secretions of honeydew on the leaves and stems frominsects such as aphids, whiteflies, and scales. The sooty mold can only take hold if this honeydew is present since this is where the sooty mold obtains nourishment. Sooty mold can be controlled once the insect responsible for the honeydew secretions is identified. Sooty mold can kill a plant in extreme cases. (Jeff 2002; Cornell University 2002). 32540000-3004/3151-1202R159.doc - - Page 10 I ,. •-.H' ,. - j . City of Carlsbad I Olivenhain Road Widening .. - Wetland Mitigation Area - December 2002 •• - Although pests and diseases have been identified in the mitigation area, no corrective actions are recommended. AMEC will continue to monitor the sooty mold to see if it become significant I issues.- 3.2 Botanical Monitoring . I Botanical monitoring was conducted for the mitigation area in October 2002. Quantitative botanical monitoring consisted of measuring container tree and shrub heights, container plant I success, and percent cover of on-site vegetation. A representative sample of trees and shrubs existing in the mitigation area, including both container and volunteer plants, was sampled for tree and shrub heights. Tree and shrub heights I were collected using a tree height measurement instrument. - Container plant health was visually assessed for container plants installed within the mitigation I area. In addition, the number of dead container plants were counted throughout the mitigation area and evaluated against the success standards. I .Percent cover was collected using the line-intercept method. AMEC used the line intercept method to measure absolute .percent cover of all plant species encountered. The amount of each species intersecting the transect was recorded directly into a palm top.cbmputer. All plant I species were identified to genus and species when possible. Absolute percent cover was calculated for the transectè. Absolute cover measures the canopy cover of all layers of Vegetation, taking into account the overlapping characteristics of many herbs, shrubs, and trees. I .. Bare ground and litter were also recorded. Absolute percent cover will be referred to as percent cover for the remainder of this report. The data were analyzed to provide total cover of native and nonnative species, including a breakdown by each species. Four transects were required I by the mitigation plan and were permanently marked with t-posts and pink flagging (Figure 3). The raw botanical monitoring data are located in Appendix B. Photographs of the transect locations are located in Appendix C. -• . I 4.0 BOTANICAL MONITORING RESULTS I The tree and shrub heights, container plant success, and percent cover for the mitigation area are discussed below. I 4.1 Tree and Shrub Heights - - • . Willow species and Baccharis species heights were ,collected in the mitigation area. WillOw species are referred to as trees and Baccharis species are referred to as shrubs. All tree and I shrub heights were taken for all trees and shrubs occurring in the mitigation area because it was difficult to distinguish container plants from the volunteers after 5 years. Each tree or shrub was recorded as a container, avolunteer, or an unknown The tree assessment included 58 trees, of I - . •.• • •:. - 32540000-3004/3151-1202R159.doc . . .-•. . • Page 11 I - •. - . • - .. -. - I [1 I I [1 I I I I I I I I I I I I I 12/23/02 I * City of Carlsbad .. - I Olivenhain Road Widening Wetland Mitigation Area December 2002 - which 22 were container trees, 33 were volunteer trees, and3 were unknown trees. The shrub assessment included 42 shrub individuals of which 9 were container shrubs, 29 were volunteer shrubs, and 4 were unknown shrubs (Table 4). I . .- TabIe4 I . TREE AND SHRUB CONTAINER HEIGHTS FOR THE OLIVENHAIN ROAD WETLAND MITIGATION AREA I I: I, I I , 1 Trees Scientific Name Common Name Type Height . (m) Sample Size Salix exigua Narrow-leaved willow Container 2.7 9 Salix exigua Narrow-leaved willow Unknown 2.7 3 Salix exigua Narrow-leaved willow Volunteer 2.1 29 Salix lasiolepis Arroyo willow Container 5.3 13 Salix lasiolepis Arroyo willow Volunteer. 2.5 4 Average for Container Trees 4.0 22 Average for All Trees . 3.0 36 Total 58 Shrubs Scientific Name Common Name Type Height (m) Sample Size Baccharis pilularis Coyote bush - Volunteer 1.6 5 Baccharis salicifolia Mulefat Container 3.1 9 Baccharis salicifolla Mulefat Unknown 3.0 4 Baccharis salicifolia Mulefat Volunteer 3.4 24 Average-for Container Shrubs 3.1 9 Average for All Shrubs . 2.5 33 Total - 42 — 4.2 Container Plant Success I No dead container tree or strub plant's were located during year 5. Many of the container trees and shrubs are no longer discernible in the mitigation area: There are several tree and shrub I age classes and an abundancO of established volunteer species in the mitigation area. Several container plants, especially California sagebrush (Artemisia cailfornica) and Palmer's I sagewort (Artemisia palmer,), which were planted in 2001 on the flood control dike, appear - unhealthy and are somewhat stunted. This is most likely due to the higher salt and clay levels in I this area. * 4.3 PercentCover . * I . The total percent vegetative cover for all pecies is 135.8 percent. The native species cover is 135.5 percent and the nonnative species cover is 0.3 percent. Percent cover data are presented in Table 5. 32540000-3004/3151-1202R159.doc - . Page 13 I ::' Scientific Name Common Name Absolute Cover (%) Isocoma menziesii coastal goldenbush 38.1 Salicomia virginica * ickleweed 17.6 rtemisia pa/men * Palmer's sagewort 16.8 Distich/is spicata saltgrass 10,9 Ambrosia psiostachya western ragweed 8.8 Leymus condensatus * giant wild rye . 7.4 Frankenia sauna . alkali heath 6.6 Bacchans salicifolia * mule fat 4.7. Oenothera elata spp. hüsutissima * - evening primrose 3.8 Salix exigua * narrow-leaved willow 3.5 Malvella leprosa * alkali mallow 2.9 %nemopsis californica * 'erba mansa 2.6 trtemisia douglasiana Douglas mugwort 2.6 Pluchea sencea * arrow. weed Encelia ca lifornica , coastal sunflower 1.7 Epiobium ciliatum willow herb - 1.6 Salix lasiolepis . arroyo willow 1.3 Baccharis pilularis * coyote bush 1.2 Heterotheca grandiflora * . telegraph weed 0.5 Solanum douglas/i * )lack nightshade 0.5 Brassica nigra )lack mustard 0.2 Pluchea odorata * ' salt marsh fleabane 0.2 Picns echioides )ristly ox-tongue . - 0.1 Percent Total Cover . . . ' 135.8 Percent Native Cover , 135.5 Percent Nonnative Cover . 0.3 H City of Carlsbad .' Olivenhain Road Widening Wetland Mitigation Area December 2002 Table 5 OLIVENHAIN ROAD WETLAND MITIGATION AREA PERCENT COVER a . Denotes plant species native to southern California. I 5.0 EVALUATION OF SUCCESS STANDARDS . I . The evaluations of the results are discussed below in relation to the success standards outlined in Table 1. . . 32540000-3004/3151-1202R159.doc Page 14 City of Carlsbad . I Olivenhain Road Widening . Wetland Mitigation Area December 2002 . 5.1 Tree and Shrub Heights .. The tree and shrub height success standard for year 5 was achieved. The specified tree height I success standard iê '3.4 meters and the shrub height success standard is 1.8 meters. Of the 58 trees measured in the mitigation area, 22 were container trees. The average height for container trees in the mitigation area was 4.0 meters, which achieves the height success I . standard of 3.4 meters. Including all trees, volunteersand unknown, the average height for a tree is 3.0 meters; however, there is no success standard for volunteer and unknown trees. Of the 42 shrubs measured in the mitigation area, 9 were container shrubs. The average height for I .containershrubs in the mitigation area was 3.1 meters, which hat achieves the height success standard of 1.8 meters. Including all shrubs, volunteers and unknown, the average height for I shrubs is 2.5 meters; however, there is no success standard for volunteer and unknown shrubs. 5.2 Container Plant Success . ... , . I The container tree and shrub survival success standard for year 5 has been achieved. The percent survival success standard for year 5 is 90 percent for container trees and 80 percent for container shrubs. No dead container trees' or shrubs were located during the fifth year of the i mitigation area. . .. .. . . , 53' Percent Cover . . I . The percent cover standard for year 5 has been achieved. The percent cover success standard by all species in the mitigatidn area for year 4 is 90 percent. The total cover for all species after I year 4 for the mitigation area is 135.8' percent. The, native species cover is 135.5 percent and the nonnative species cover is 0.3 percent. The dominant native species is coastal goldenbush with a percent cover of 38.1. Pickleweed is the second most dominant species at the mitigation I .area with a percent cover of 17.6. Wetland indicator species such as willow species, bulrush (Scirpus sp.), and tall cattail (Typha latifolia) àre not represented in,thé percent cover data; however, these species do occur in the mitigation area and just happen to occur in areas where the transects were not placed. Black mustard,!s the most dominant nonnative species with a I percent cover of 0.2, which is extremely low, I 6.0 RECOMMENDATIONS . . ... ' I' AMEC recommends the following for year 6 of the 5-year maintenance and monitoring program: Monitor the mitigation area since it will have been taken off irrigation' completely in December 2002. Make sure that the portions of the mitigation area, which were previously I irrigated, survive for 1 year without irrigation.- Check' the mitigation area for nonnative" species, especially invasive species. If needed, have a landscape maintenance contractor remove these species from the mitigation area. 32540000-3004/3151-1202R159.doc - - Page 15 i City of Carlsbad I Olivenhain Road Widening - Wetland Mitigation Area - December 2002 I 7.0 REFERENCES Bossard, C.C., J.M. Randall, and M.C. Hoshovsky, editors. 2000. Invasive Plants'of Californi's I Wildlands. University of California Press, Berkeley, California. Brian F. Mooney Associates. 1991. Biological survey and report for the Olivenhain Road I widening/realignment and flood control project. June. Cornell University. Plant Diagnostic Clinic. - 1999. Retrieved from -" I http:llplantclinic.corñell.edu/FactSheets/ on December 10, 2002. Hickman, J.C. 1993. The Jepson Manual: Higher Plants of California. University of California I .Press, Berkeley, California. 1400 pp. Jett, Susan. Personal Communication. Ranchà Santa Ana Botanical Garden Horticulturalist. 10 December 2002. - .. . I . - I I - 1 i 1 ) I I I - . 32540000-3004/3151-1202R159.doc S . . Page 16 '1 i ameO 8 July 2002 * 02-124-3151 Project No. 3-25400000-1001-3151 I . Ms. Sherri Howard . . . . . . . Project Manager City of Carlsbad I Engineering Department . .. 1635 Faraday Avenue . ., . Carlsbad, California 92008 I .. . Subject-,','. Olivenhain Road . Widening Wetland Mitigation Site-Second Horticultural Monitoring Report 2002 and Triannual Formal Field Meeting Dear Ms. Howard: AMEC Earth & 'Environmental (AMEC) submits this letter as the second of three I horticultural mohitoring reports for the Olivenhain road widening wetland mitigation site to the City of Carlsbad (the City) for your records for 2002. This letter also details a triannual field visit between the City and Native Landscape, Inc. (Native Landscape) and AMEC on 16 June 2002. I The present status of the site including weeding, volunteer establishment, and irrigation are addressed in this letter report. I The project is authorized under ,U.S:,Army Corps of Engineers'(ACOE) Section 404 'Nationwide 'Permit No. 95-20096-BH and California Department Fish and' Game Section 1601 Streambed ' Alteration Agreement No. 5-560-94. According to the Olivenhain Road Widening/Realignment and .Flood Control Project Wetland Mitigation/Revegetation Plan Carlsbad, California, I ' November 1995, horticultural monitoring reports must be completed and sent to the City and the landscape maintenance contractor, Native Landscape, three times a year. The June 2002 visit is the second of three horticultural monitoring visits for year five of the mitigation. The site is presently performing well and has been prperly maintained over the past year. Weeding is occurring regularly at the site and no invasive and/or nonnative species were detected at the site. I Many volunteer riparian and upland scrub plant species are present at the site and- little bare ground is present. Plant communities consisting of an abundance'of native species that occur I in several age classes have colonized most of the site. Several species including giant wild rye (Leymus condensatus, California sage (Artemisia ca!ifthrnica), and Hooker's evening primrose (Oenothera elata ssp. hirsutissima) were observed flowering or' setting seed at the site. I Supplemental irrigation is presently being applied to the 'northern dike 'portion adjacent to the mitigation site and the northwestern edge of the wetland mitigation 'site. All other portions of the dike and the wetland mitigation site are existing on 'natural conditiOns. AMEC. recommended modifying.the irrigation schedule for the dike and "a portion of the western pa'rt of the wetland " mitigation site during.the May horticultural visit and during this triannuãl formal field meeting. Please see the' May letter report for the irrigation schedule modification. Native Landscape I implemented this irrigation schedule modification during the last week in June 2002. - AMEC Earth & Environmental, Inc. I 5510 Morehouse Drive , ' ' ' ' • ' San Diego, CA 92121 Tel (858) 458-9044 Fax (858) 458-0943 ' ' www.amec.com ' 325400000-1001/3151-0702R065 Ms. Sherri Howard ameo City of Carlsbad 8 July 2002 Past issues regarding the dike portion adjacent to the wetland mitigation site have been I resolved and are explained in detail in the fourth annual report. AMEC will continue site visits and submit letter reports in accordance with the project's permits I. '(858) and agreements. Please, call me' at 4589044, extension. 264, or e-mail me at jess!ca.walker©'amec.corn, if you have any questions.' I Sincerely, AMEC Earth & Environmental, Inc. I Jessie Walker I Botanist JW/css I cc: Debbie Fromme, Native Landscape, Inc. File Contracts I ' ' 1 I I I I I I' I t I - 325400000-1001/3151 -Ô702R065 Page 2. I-, iviarcn b, uu I Ms.' s Sherri Howard Project Manager I City of Carlsbad .- * Engineering Department 1635 Faraday Avenue I Carlsbad, California 92008 Subject: Olivenhain Road Widening Wetland Mitigation Site-First Horticultural I Monitoring Report 2002 and Triannual Formal Field Meeting Dear Ms Howard I , AMEC Earth & Environmental (AMEC) submits this letter as the first, of three horticultural monitoring reports for-the Olivenhain road widening wetland mitigation site to the City of Carlsbad (the City) for your records for 2002. This letter also details a triannual field visit I between the City, Dudek and Associates, Inc. (Dudek), Native Landscape, Inc. (Native Landscape), and AMEC on 22 February 2002. The present status of the site including the site success in relation to the year four success standards was discussed during the' site visit. Loss of mitigation acreage in 2000 on the riparian scrub and upland transitional portion of the dike due to a housing development was also discussed The project is authorized under U.S. Army Corps of Engineers (ACOE) Section 404 I . Nationwide Permit No. 95-20096-BH and California Department Fish and Game Section 1601 Streambed Alteration Agreement No. 5-560-94. According to the Olivenhain Road Widening/Realignment and Rood Control Project Wetland Mitigation/Revegetatión Plan I 'Carlsbad, California, November 1995, horticultural monitoring reports must be completed and sent to the. City and the landscape maintenance contractor, Native Landscape, three times a year. The February 2002 visit is the first of three horticultural monitoring visits for year five of the mitigation I The site is presently performing well and has been properly maintained over the past year. 'Weeding is occurring regularly at the site and many volunteer riparian and upland, I , ' scrub plant species are present.' All but one of the year four success standards for the site has been achieved. Percent I 'cover and container plant survival"are both meeting year four success standards, but tree height standards are not being met The Fourth Annual Report-Olivenhain Road Widening Wetland Mitigation Area February 2002 discusses these success standards in more detail I I AMEC Earth & Environmental Inc • 5510 Morehouse Drive , San Diego, CA 92121 Tel 858458-9044 1 , , Fax 858458-0943 , www.amec.com I I Ms. Sherri Ma 5, 2002 rch ard ameO Pa e2 I Over the last year it was discovered that a portion of the mitigation site was taken over by a housing development. Concordia Homes developed portions of the mitigation site after the City vacated a site easement. The site history, loss of mitigation acreage, and 1 future possible solutions were discussed during the triannual formal field meeting. The City determined that Dudek and AMEC would calculate the remaining mitigation acreage I at the site and locate a suitable wetland/upland mitigation site, to replace the missing acreage at a mitigation ratio determined by ACOE. AMEC will also coordinate discussions and proposals of these activities with the necessary agencies and prepare a conceptual mitigation and monitoring plan for the new mitigation, site once it has been I located. 4 AMEC will continue site visits and submit letter reports in accordance with the project's I permits and agreements. Please call me at (858) 458-9044, extension 264, or e-mail me atjessica.walker@amec.com, if you have any questions. I Sincerely, AMEC Earth & Environmental, Inc. Jessie Walker Botanist I JW/css cc: Debbie Fromme; Native Landscape, Inc. 1 File Contracts 3-i505-2000-1006-3151 I . •-. H. .: I I I I - ameo.,... 11 November 2002 0 02-191-3151 .. 1 Project No. 325400000-3004. . . Ms. Sherri Howard ' ,• •• '. . .... . ,.. •.. .. Project Manager '• - , . City of Carlsbad . . . -. . Engineering Department 1635 Faraday Avenue .- .' ... . . . Carlsbad, California 92008 : . , . . .' .. . . •.. Subject: Olivenhaiñ Road Widening Wetland Mitigation Site-Third Horticultural . MOnitoring Report 2002 and Trianhual Formal Field Meeting Dear Ms. Howard: . . . . . AMEC Earth & Environmental (AMEC) submits this letter as the third and final horticultural monitoring report for the Olivenhain Road widening wetland mitigation site to the City of Carlsbad (the City) for your records for 2002. This letter also details a triannual field visit ..between the City and Native Landscape, Inc. (Native Landscape), and AMEC on 17 October 2002. The present status of the mitigation site, including nonnative plant species establishment, irrigation and mitigation site health, was discussed during the mitigation site visit. The project is authorized under U.S Army Corps of Engineers (ACOE) Section 404 Nationwide Permit No; 95-20096-BH and California Department Fish andGame Section 1601 Streambed Alteration Agreement No. 5-560-94. According-to the Olivenhain Road Widening/Realignment and Flood Control Project Wetland Mitigation/Revegetation Plan Carlsbad, California, November 1995, horticultural monitoring reports must be completed and sent to the City and the landscape maintenance contractor, Native Landscape, three times a year. The October' 2002 visit is the third and final horticultural monitoring visit for year five of mitigation. Prior to the triannual ,field visit, AMEC located one Sydney golden wattle (Acacia longifolia) and a small patch of Hottentot-fig (Carpobrotus edulis) in the mitigation site. AMEC informed Native Landscape and they promptly removed the invasive species. One firethorn (Pyracantha sp.), a nonnative species, was located during botanical surveys of the mitigation site and was removed by AMEC. AMEC will continue to monitor the mitigation site to ensure that these species do/not return..' • •• . . The irrigation being supplied to portions of the mitigation site is adequate, but will be . discontinued when the rainy season begins in late November, since this mitigation site, has been supplemented by irrigation for the past five years and should be able' to be supported on, natural. conditions. . '. ,. : -, • .. • :. • • • .. Many volunteer riparian and'upland scrub plant species are present at the mitigatiOn site. Plant communities consisting of an abundance of native species that occur in several age classes -. have colonized most of the mitigation site. Several species including giant wild 'rye (Leymus condensatus), California mugwort (Artemisia dougiasiana), saltmarsh fleabane (Pluchea AMEC Earth & Environmental, Inc. . 5510 Morehouse Drive . San Diego, CA 92121 . Tel (858) 458-9044 Fax ' (858) 458-0943 ' - www.amec.com 325400000-3004/3151-111021`1139 I Serri Howard 1 City 11 tCarlsbad 0: ame& odorata) and Hooker's evening primrose (Oenothera data ssp. hirsutissima) were observed flowering or setting seed at the mitigation site. AMEC will complete thefifth annual report for the mitigation site bythe end of 2002. Please call. me at (858) 458-9044, extension 264, or e-mail me at jessica.walker@amec.com, if you have I any questions. Sincerely, AMEC Earth & Environmental, Inc. I I Jessie Walker - Botanist JW/css / cc: Debbie Fromme; Native Landscape, Inc. File • Contracts I! . I , - S I- , 'S •, I. • .: " - 5 . .5. . .:'' 1 • .• ' - "S .. 1635 Faraday Avenue Carlsbad, California 92008 Subject: Olivenhain Road Widening Wetland Mitigation Site-Second Horticultural Monitoring Report 2002 Dear Ms Howard AMEC Earth & Environmental, Inc. (AMEC) submits this letter as the second of three horticultural monitoring reports for the Olivenhain road widening wetland mitigation site to the City of Carlsbad (the City) for your records for 2002. This letter also details a field visit between the Native Landscape, Inc. (Native Landscape) and AMEC on 22 May 2002. The present status of the site including irrigation, weed abatement, container plant health, and established plant vigor are discussed in this letter. The project is authorized under U.S. Army Corps of. Engineers (ACOE). Section .404 Nationwide Permit No. 95-20096-BH and California Department of Fish and Game Section 1601. Streambed Alteration Agreement No. 5-560-94. According to the Olivenhain Road WideninglRealignment and Flood Control Project Wetland Mitigation/Revegetation Plan Carlsbad, California, November 1995, horticultural monitoring reports must be completed and sent to the City and the landscape maintenance contractor, Native Landscape, three times a year. The May 2002 visit is the second of three horticultural monitoring visits for year five of the mitigation The site is presently performing well and has been properly maintained. Supplemental irrigation is presently. being applied to the northerh dike portion adjacent to the. site and the northwestern edge of the wetland mitigation area All other portions of the site are existing on natural conditions In order to promote deep root growth so that the container plants can be weaned off irrigation, AMEC recommends the following alterations to the irrigation, schedule. The areas receiving irrigation will be irrigated for 30 minutes, 2 times a week, for the next 6 weeks. After the initial- 6 weeks, the water schedule should be changed to 30 minutes, once a week, for approximately 1 month. After 1 month the water schedule should be changed to 30 minutes every 2 weeks for approximately 2 months. During fall irrigation will be used to mimic seasonal rain conditions if we do not receive normal rainfall. AMEC will. monitor the site to ensure. that the site remains healthy and that the: supplemental water is penetrating the soil and reaching the roots AMEC will work with Native Landscape to ensure that the irrigation schedule is altered AMEC Earth & Environmental, Inc. , 5510 Morehouse Onve San Diego, CA 92121 - Tel (858) 458-9044 Fax (858) 458-0943 . www.arnec.com . I Ms. Sherri Howard 6 June 2002 ameo I .. Weeding has not occurred regularly at the site since April, but will resume. Normative I and/or nonnative noxious weed establishment does not appear to be a threat to the success of the site, as the site is stable and most of the native perennial vegetation has become established. Many volunteer,.riparian and upland scrub plant species have I become established and several age classes are evident. AMEC will continue site visits and submit letter reports in accordance with the project's permits and agreements. Please call me at (858) 458-9044, extension 264, or e-mail I me at jessicawalker©amec.corn, if you have any questions. Sincerely, AMEC Earth & Environmental, Inc. . .• . . I Jessie Walker . Botanist I JW/css . cc: Debbie Fromme; Native Landscape, Inc. I . File Contracts . .. . . 0 I S I S. •• .5 5 5 I 5 5 5 I S. AMEC Earth & Environmental, Inc. I 5510 Morehouse Drive . S San Diego, CA 92121 5 Tel (858) 458-9044 . Fax (858) 458-0943 www.arnec.com 315052000-100151-02R041 Page S I .SS .• . .. S I Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data I .. ... October2002 - - ' End Percent I Transect 1 Species Ambrosia psilostachya . Common Name western ragweed Begin (m) 0, (m) 0.1 - Cover (m) 0.1 cover - 0.33 1 Leymus condensatus giant wild rye 0-. 0.6 0.6 - 2.00 •. 1 1 Artemisia palmeri, Artemisia palmed Palmer's sagebrush Palmer's sagebrush 0.35 ' 0.5 0.45 1.1 0.1 0.6 0.33 2.00 1 Leymus condensatus . giant wild rye .1 1.9 0.9 3.00 . - 1 Isocoma menziesii coastal goldenbush 1.8 4.3 2.5 8.33 i bare ground bare ground 4.3 5.85 1.55 5.17- 1 Oenothera elata spp. hinsutissima evening primrose 5.85 6.55- 0.7 2.33 -I Isocoma menziesii . coastal goldenbush 6.1 7.1 1 3.33 1 Pluchea senicea arrow weed . 6.35 6.8 0.45 ' 1.50 Artemisia palmeri ' Palmer's sagebrush' 6.8 6.85 0.05 0.17 1 bare ground . bare ground , - 7.1 7.35 0.25 .0.83 1 Artemisia palmer! , Palmer's sagebrush 7.35 8.2 0.85 2.83 1 Baccharis salicifolia mule fat 7.4 745 0.05 '0.17 1 Baccharis pilularis ' . coyote bush 7.5 8.9 1.4 4.67 1 Pluchea senicea ". arrow weed , 8 . 8.25 0.25 0.83 • 1 Pluchea senicea .. arrow weed 8.75 . 9.3 055 1.83 1 Baccharis salicifolia - . mule fat • . 7.8 9.2 1.4 4.67 bare ground ' . bare ground . 93 '9.7 0.4. 1.33 • 1 Ambrosia psilostachya ' - western ragweed 9.7 9.9 0.2 0.67 1 Artemisia palmer! , Palmer's sagebrush . 9.9 10 0.1 - 0.33 -I Plucheaseilcea arrow weed ' 9.8 10.3 0.5 1.67 • 1 Artemisia palmer! ' Palmer's sagebrush 10.2 10.3 . 0.1 0.33 1 Pluchea sericea ' arrow weed . 10.5- . 10.8 0.3 1.00 I . .1 Isocoma menziesii coastal goldenbush 10.3 15.6 5.3 17.67 1 Bacchanis sailcifolia - . , mule fat ' '. 12.6 12.7 0.1 0.33 1 ' Oenotheraelataspp. hirsutissima evening primrose ' ' 13.7 13.8 '. 0.1 ' 0.33 Oenothera elata sPp. hiTs utissima evening primrose 15.5- 16.7 1.2 .4.00 I i 1 Baccharis salicifolia mule fat - .. -15.5 15.9 0.4 1.33 1' Isocoma menziesii coastal goldenbush 16.65 . 19 2.35 7.83 • 1 Oenothera elata spp. hirsutissima evening primrose 16.85 16.95 0.1 0.33 1 Pluchea sericea arrow weed '- . - 19 19.8 0.8 2.67 1 Isocoma menz!esii . ' . coastal goldenbush . 19.8 22.75 2.95 9.83 • 1 Salix exigua narrow-leaved willow ' 20.7 - 21 . 0.3 1.00 1 Ambrosia psilostachya' . - western ragweed . •. 20.9 20.95 0.05 0.17 Artemisia palmed Palmer's sagebrush ' - . 20.8 ' 20.84 0.04 0.13 1 1 Salix exigua Ambrosia psilostachya ' ' narrow-leaved willow western ragweed 21.5 22.1 21.6 22.2 . 0.1' 0.1' 0.33 0.33 - Aflemisia palmer! Palmer's sagebrush , 22.3 22.45 0.15 -. 0.50 I i - 1 Ambrosia psilostachya Oenothera elata spp. hirsutlssima - western ragweed ' evening primrose' 22.7 22.75 22.75 22.8 0.05 ' - 0.05 0.17 0.17 Isocoma menziesii coastal goldenbush 22.84 23.35 . 0.51 1.70 1 -i bare ground bare ground , • bare ground bare ground ' - 22.8 - 22.35 - 22.84 23.5 - 0.04 1.15 0.13 - 3.83 1 Isocoma menziesii coastal goldenbush - '. 23.5 25.3 1.8; 6.00 I I Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data October 2002 1 Ambrosia psilosfachya western ragweed 23.7 23.73 0.03 0.10 I i . Anemopsis califomica . yerba mansa . 23.8 23.91 0.11 0.37 1 Ambrosia psiostachya western ragweed 24.84 24.95. 0.11 0.37 1 Anemopsis californica yerba mansa 25.15 25.25 0.1 0.33 I .I litter litter 25.3 25.45 0.15 0.50 Leymus condensatus giant wild rye 25.45 25.9 0.45 1.50 1 Oenothera elata spp. hirsutissima - evening primrose 25.5 26.02 0.52 1:73 -, litter . litter - 26.02 26.2 0.18 0.60 I l 1 Isocoma menziesii . coastal goldenbush 26.2 26.3 0.1 0.33 1 Baccharis salicifolia, mule fat - 26.3 26.45 0.15 0.50 I l Oenothera elata Spp. hirsutissima evening primrose 26.4 26.45. 0.05 0.17 1 Salixlasiolepis arroyo willow . 26.2 26.3 0.1 0.33 1 . Oenothera elata spp. hirsutissima evening primrose 26.45 .26.5 0.05 0.17 litter . lifter . 26.5 26.75 0.25 0.83 I i 1 Oenothera elata spp. hirsutissima evening primrose 26.75 26.87 0.12 0.40 1 Isocoma menziesii coastal goldenbush 26.83 26.97 0.14 0.47 Oenothera elata spp. hirsutissima evening primrose 26.97 27.28 0.31 1.03 I l 1 Isocoma menziesii - coastal goldenbush 27.2 27.55 0.35 1.17 1 Oenothera elata spp. hirsutLssima evening primrose 27.45 27.8 . 0.35 1.17 . 1 Salix lasiolepis arroyo willow, '27 28.45 1.45 .4.83 I 1 Bacchans salicifolia mule fat 27.5 28.3 0.8 . 2.67 - Qeriothera elata spp. hirsutissima evening primrose - 27.9 28.5 0.6 . 2.00 I i Isocoma menziesii , . litter . . . coastal goldenbush litter -' . - 28.5 29.05 29.05 29.1 0.55 0.05 1.83 - 0.17 1 Ambrosia psiostachya - western ragweed 29.1 29.25 0.15 0.50 - 1 Anemopsis califomica . - yerba mansa , 29.15 29.4 0.25 ' 0.83 I . 1 Isocoma menziesii - . coastal goldenbush 29.4 30 0.6 2.00 1 Anemopsis califomica yerba mansa 29.55 . 30 0.45 1.50 - 2 Aflemisia palmed - . Palmer's sagebrush 0 - 0.15 0.15 0.50 I ' 2 Anemopsis califomica . yerba mansa 0.15 0.3 0.15 0.50 - . 2 Artemisia palmed Palmer's sagebrush 0.3 ; 0.38 0.08 0.27 - 2 Anemopsis califomica yerba mansa - 0.38 0.43 .' 0.05 0.17 I . 2bare ground bare ground 0.3 0.5 0.2 0.67 2 - Anemopsis califomica yerba mansa 0.5 0.55 0.05 0;17 2 Artemisia palmed Palmer's sagebrush 0.55 1.94 1.39 4.63 I 2 Anemopsis califomica - yerba mansa . 0.55 -. 1.93 1.38 4.60 2 litter litter , - . - 1.94 2.1 0.16 0.53 2 Artemisia palmed - Palmer's sagebrush 2.1 2.85 0.75 2.50 - I . 2 1eymus condensatus giant wild rye 2.52 5.9 . 3.38 - - 11.27 2 Arternisia palmed - ' - Palmer's sagebrush . 3.85 3.87 0.02 - 0.07 2 Artemisia palmed Palmer's sagebrush . .. 4.12 4.14 0.02 -. 0.07 I - 2 Artemisia palmed Palmer's sagebrush 4.75 4.78 ...0.03 0.10 2 Artemisia palmed ' - . Palmer's sagebrush 5.4 5.42 0.02- 0.07 2 . Isocoma menziesi - coastal goldenbush 5.47 6.2 0.73 2.43 I . 2 Artemisia palmed Palmer's sagebrush - 5.65 . 19.3 - 13.65 45.50 2 Isocoma menziesii coastal goldenbush . . 6.7 6.75 0.05 . 0.17 2 Artemisia douglasiana Douglas mugwort 7.8 - 7.98 0.18 0.60. I.- 20f9 - I : :.". -. .: .- Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data * October 2002 0 Artarnicin dn. ,nincinnc. n,, ,,,i..., 0 0 an Ann a - .....-.....-.... .... L,¼aJla IIUflJIt * U.J D.JO U.CC 2 Brassica nigra - black mustard - 14.75 15 0.25 0.83 2 Solanum doug/ash black nightshade 15.18 15.75 0.57 1.90 2 Pluchea odorafa salt marsh fleabane 15.35 15.4 0.05 0.17 2 Encelia califomica ., coastal sunflower .15.65 16.58 - 0.93 3.10- 2 Encelia califomica - - coastal sunflower 17.55 18.5 0.95 3.17 2 Isocoma menziesii coastal goldenbush 19.1 22.05 2.95 9.83 2 Encelia califomica ,. . coastal s'unflower - 20.35 20.55 0.2 :- 0.67 - 2 Artemisia pa/men- Palme?s sagebrush 22 22.05 0.05 0.17: 2 litter litter 22.05 22.16 0.11 0.37 2 Isocoma menziesii coastal goldenbush 22.16 2759 5.43 18.10 2 Artemisia palmeni Palmer's sagebrush 24.65 25.1 0.45 1.50 2 Leymus condensatus giant wild rye - 25.13 - 25.6 0.47 1.57, 2 Leymus condensatus giant wild i'e 26 26.2 02 0.67 2 Leymus condensatus giant wild rye 26.65 26.8 0.15 0.50 2 Salix exigua narrow-leaved willow 26.8 2703 - 0.23 0.77 2 Leymus condensatus giant wild rye 27.2 . . 29 1.8 600 2 Baccharis salicifolia mule fat 27.4 30 2.6 8.67 2 Isocoma menziesii coastal goldenbush 27.85 27.88 0.03 0.10 2 Artemisiapalmeni - Palmer's sagebrush . 28 28.05, 005 0.17 2 Isocoma menziesii . coastal goldenbush 28.35 - 29.8 1.45 4.83 2 Artemisia douglasiana . Douglas mugwort - 29.2 29.5 0.3 1.00 2 Leymus condensatus giant wild rye 29.05. 30 095 3.17 3 bare ground bare ground 0 0.37 0.37 1.23 3 Isocoma menziesll coastal goldenbush 0.37 0.61 0.24 0.80 3 Ambrosia psi/ostachya western ragweed 0.61 . 068 0.07 023 3- bare ground bare ground - 0.68 0.98 0.3 100 3 Isocoma menziesii coastal goldenbush 0.98 1.32 034 1.13 3 Ambrosia psilostachya western ragweed - 1.19 1.24 0.05 0.17 3 Ambrosia psilostachya western ragweed 1.32 1.54 . 0.22 073 3 Isocoma menziesii coastal goldenbush 1.54 1.87 0.33 1.10 3 Ambrosia psilostachya western ragweed 1.78 3.3 1.52 5.07 3 Isocoma menziesii coastal goldenbush 2.25: 2.64 -.0.39 1.30 3 Oenothera elata spp. hiTs utissima evening primrose 2.9 3.06 - 0.16 0.53 3 Isocoma menzies/i coastal goldenbush 2.98 3.01 003 0.10 - . Oenothera elata spp. hirsutissima evening primrose 3.26 3.45 -. --0.19 0.63 3 - Heterotheca grandiflora - ' telegraph weed .. 3.45 - 36 0.15 050 3 Ambrosia psilostachya western ragweed 3.5 41 0.6 2.00 3 Isocoma menziesii coastal goldenbush 1 4.1 4.7 0.6 2.00 3 - Heterotheca grandiflora - . telegraph weed 4.6 4.8 0.2 067 3 Ambrosia psilostachya western ragweed - 4.4 5.62 1.22 - 4.07 3 Frankenia sauna - alkali heath - 4.85 5.14. 0.29 0.97 3 Isocoma menziesii coastal goldenbush -, 549 6.26 0.77 2.57 3 Ambrosia psilostachya western ragweed -. 5.99 6.6 0.61 2.03 3 Distich/is spicata saltgrass - - 5.66 7.6 -:' 1.94 6.47 3 Heterotheca grandiflora . telegraph weed / - - 6.43 6.66 0.23, ',0.77 3 Maiveula ieprosa * alkali mallow - . - 6.53 - 6.61 0.08 0.27 - . . - . . . . - 3of9- - I Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data I . October 2002 3 Malvellaleprosa alkali mallow 6.75 6.94 0.19., 0.63. I 3 Ambrosia psilosthchya - western ragweed ,., 7.1 7.15 0.05 0.17 • . 3 Ambrosia psilostachya western ragweed - 7.38 . 8.47 1.09 3.63, 3 Distichlis spicata saltgrass 7.8 : 9.25 1.45 4.83 I 3 Ma! ye/la leprosa alkali mallow 7.75 7.85 '0.1 0.33 • 3 lsocoma menziesii coastal goldenbush 8.12 8.5 0.38 1.27 3 Ambrosia psilostachya western ragweed . . 8.55 8.81 0.26 0.87 I . 3 . Salicomia virgin/ca pickleweed 9.19 9.2 0.01 0.03 . . 3 Maivella leprosa . alkali mallow. ' 9.2 9.21 . 0.01 . 0.03 3 !socomamenziesii . coastal goldenbush 9.21 '10.4 1.19 3.97 I 3 Salicomia virginica . pickleweed . 9.52 .9.95 0.43 143 I 3 DitichIis spicata . .saltgrass , 9.87 12 2.13 7.10 3 Salicomia virginica pickleweed . . 10.2, 10.5 0.3 1.00 I 3 Isocoma menziesii coastal goldenbush 10.55 11.93 1.38 4.60 1 3 Ambrosia psilostachya - .' westem ragweed 11.05 11.1 ,• 0.05 ' 0.17 3 Salicomia virginica . pickleweed 11.2. 11.23 0.03 0.10 3 Malvella leprosa alkali mallow . 11.25 ' 11.25 0 . 0.00 I 3 Ambrosia psilostachya . western ragweed 11.5 . 11.53 0.03 0.10 3 Salicomia virgiñica . pickleweed ' ' 11.55 11.93 ' 0.38 1.27 • 3 Ambrosia psilostachya. , western ragweed . 11.93 11.99 0.06 0.20 I 3 Salicomia virginica pickleweed - 12 12.55 0.55 1.83 3 Ambrosia psilostachya . . western ragweed 12.15 12.25 0.1 0.33 I 3 3 litter , Ambrosia psilostachya litter - ' " western ragweed ' 12.55 12.56 12.56 12.58 0.01' 0.02 6.03 0.07 3 Distichlis spicata saltgrass , 12.56 , .12.68 . 0.12- ,0.40 - I . 3 Isocoma menziesii litter, ' coastal goldenbush litter . . 126 12.7 12.7 . 12.95 0.1 025 0.33 0.83 3. !socomamenziesii . coastal goldenbush . , 12.95 13.1 0.15 0.50 3 Distichlis spicata saltgrass . 12.98 13.45 0.47 ' 1.57. I ' 3 !socomamenziesii 'coastal goldenbush' 13.45 13.8 0.35 1.17 3 Malvella leprosa , alkali mallow - 1346 13.5 004 . 0.13 Salicomia virginica . pickleweed , 13.75 13.95 0.2 0.67 I . 3 Distichlis spicata . saltgrass . - 13.95 14.4 0.45 1.50 3 Ma! ye/la leprosa alkali mallow 14.15 14.2 e 10.05 0.17 3 Salicomia virginica pickleweed 'v,. ' 14.3 16.3 2 6.67, I 3 Ambrosia psilostachya . western ragweed ,;' 14.8 14.82 ' 002 ' 0.07 Distichlis spicata ' saltgrass . 16.3 16.35 005 Oil 3 Ma/ye/la leprosa , . alkali mallow . 16.35 17.3 095 3.17 I . 3 Saiicomia virginica , pickleweed . , 16.7 16.75' 005 0.17 3 Salicomia virginica pickleweed 17.3 ., 18.4 ' 1.1 3.67 3 . Distichlis spicata saltgrass -' 18.25 . 18.9 065 2.17 I Ma/ye/la leprosa alkali mallow 18.4 18.7 0.3 1.00 3 Salicomia virginica . - pickleweed . 18.8 20.95 - 2.15 7.17 3 Distichlis spicata . saltgrass , ' 19.3 19.45 0.15 0.50 I ' - 3 Maivella leprosa , alkali mallow 19.9 20.05 0.15 . 0.50 3' Frankenlasalina alkali heath ' -. 2095 ,21.85 0.9' 3.00 3 Ma/ye/la leprosa , . alkali mallow , ' .. . 21.05 21.2 0.15 0.50 4f9 'I ' ' . . - ., , .-, I . '- -• Olivenhai Wetland Mitigation Area Botanical Monitoring Ravi Data I October 2002 . . 3 Malvella leprosa . alkali mallow 21.55 21.65 0.1 0.33 I - 3 Salicomia virginica pickleweed 21.85 21.85 0 0.00 • 3 . Frankenia sailna alkali heath " 21.35 27.8 6.45 21.50 3 Salicomia virginica pickleweed 26.1 26.6 0.5 . 1.67 I 3 Distichlls spicata ' saltgrass ' 26.7 26.92 0.22 0.73 S 3 . Salicomia virginica pickleweed 27.2 27.31 0.11 0.37 3 Salicomia virginica . pickleweed 27.75 28.75 1 3.33 I 3 Malvella leprosa alkali mallow . ' 27.98 28.1 0.12 0.40 . 3 Frankenia sauna alkali heath 28.04 28.06 0.02 0.07 3 Malvella leprosa alkali mallow 28.75 . 29.1 0.35 1.17 - 3 litter litter 29.1 29.2 0.1 0.33 3 Salicomia virginica pickleweed . . 29.2 29.22 0.02 0.07 3 Ma/ye/la leprosa alkali mallow ' 29.22 30 . 0.78 2.60 • 3 Salicomia virginica : pickleweed 29.4 29.55 . 0.15 0.50 U 3 Salicomia virginica . pickleweed 29.7 29.8 0.1 0.33 3 Frankenia sa/ina alkali heath 29.8 30 0.2 0.67 I 4 Isocoma menziesll . coastal goldenbush 0 2.82 2.82 9.40 U 4 Epi/obium cilia turn willow herb 1.45 1.92 0.47 1.57 4 Ambrosia psi/ostachya western ragweed - 2.4 2.44 0.04 0.13 • 4 Epilobiurn ciliatum willow herb 2.7 3.4 - 0.7 2.33 I 4 Isocoma menziesii , coastal goldenbush , 3.09 3.13 0.04 0.13 4 , . Salicomia virginica.. pickleweed . 3.1 4 0.9 3.00 I 4 4 . Isocoma menziesii Isocoma menziesii coastal goldenbush coastal goldénbush 3.4 3.58 . 3.48 3.7 0.08 0.12 0.27 0.40 4- Isocoma menziesii . coastal goldenbush 3.85 4.02 0.17 0.57 - 4 4 Epiloblum ciliatum litter willow herb - litter - 3.85 4.02 4 4.06 0.15 0.04 0.50 0.13 4 Isocoma menziesii ' coastal goldenbush 4.06 4.5 0.44 1.47 - 4 Artemisiapa!rneri- S Palmerssagebrush 4.2 4.3 0.1. 0.33 I ' 4 Artemisiapa/meri , Palmer's sagebrush 4.37 5.6 1.23 4.10 4 Salicomia virgin/ca pickleweed - . 4.1 4.37 0.27 0.90 4 . Dislichlis spicata saltgrass . 4.78 7.5 2.72 9.07 1 4 Salicomia virginica . , pickleweed 5.22 5.44 . 0.22 • 0.73 4 Salicomia virginica pickleweed 5.57 6.03 0.46 1.53 - 4 Isocoma menziesii . coastal goldenbush 5.65 5.78 0.13 0.43 • 4 Salicornia virginica , pickleweed . 6.11 7.2 . 1.09 3.63 • 4 Isocoma menziesii - coastal goldenbush 6.31' 6.94 0.63, 2.10 4 Sailcornia virginica pickleweed 7.5 . 7.82 - 0.32 1.07 :I 4 Ambrosia psiostachya , western ragweed ' 7.85 7.92 0.07 . 0.23 Distichlis spicata saltgrass 7.92 8.95 1.03 3.43 4 Ambrosia psilostachya. western ragweed 7.96 8.04 0.08 0.27 I 4 Isocoma menziesii , coastal goldenbush 8.65 8.71 0.06 0.20' 4 Isocoma menziesii , coastal goldenLush 8.91 9.02 0.11 - 0.37 4 Salicomia virgin/ca -. . pickleweed 8.95, 9.3 0.35 1.17 . Isocoma menziesii coastal goldenbush - 9.14 . 9:29 0.15 0.50 4 Distichils spicata saltgrss " 9.27 10.65 - 1.38 4.60 4 Malvella leprosa alkali mallow 9.5 9.64 0.14 0.47 - . 5'of9 Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data I . October 2002 4 Salicomia virginica pickleweed 9.7 9.9 0.2 0.67 I 4 Salicomia virginica pickleweed 10.65 10.9 0.25 0.83 • 4 Distichlisspicata saltgrass 10.9 11.16 0.26 0.87 4 Ma/vella leprosa alkali mallow 10.94 10.96 0.02 0.07 I 4 Salicomia virginica pickleweed 11.1 13.25 2.15 7.17 • 4 litter litter 13.25 13.57 0.32 1.07 4 Salicomia virginica pickleweed 13.57 19.1 5.53 18.43 I 4 Artemisiapalmeri Palmer's sagebrush 16.84 16.98 0.14 0.47 • 4 Artemisiapalmeri Palmer's sagebrush , 17.4 17.45 0.05 0.17 4 Salix exigua narrow-leaved willow 18 18.02 0.02 0.07 I 4 Ambrosia psilostachya western ragweed 18.24 18.35 0.11 0.37 I 4 Sallx exigua narrow-leaved willow 18.76 18.85 0.09 0.30 4 Isocoma menziesii coastal goldenbush ' 18.6 20.3 1.7 5.67 I 4 Saicomia virginica pickleweed 19.45 19.65 0.2 0.67 4 Ambrosia psilostachya western ragweed 19.95 20.05 0.1 0.33- 4 Artemisia douglasiana , Douglas rnugwort '., 20 20.02 0.02 0.07 4 Artemisia douglasiana Douglas mugwort ' 20.15 22.45 2.3 7.67 - I . 4 Epilobium ciliatum , willow herb . . 20.2 20.24 0.04 0.13 4 Sallx exigua narrow-leaved willow 20.55 20.66 0.11 0.37 4 Salix exigua ' narrow-leaved willow 22 23.5 1.5 5.00 I 4 Ambrosia psilostachya western ragweed 22 22.04 0.04 0.13 4 Isocoma menziesii coastal goldenbush . ' 229 25.4 2.5 8.33 1 4 4 Salix exigua - Anemopsis califomica narrow-leaved willow yerba rnansa' 23.78 24.41 24.05 24.5 0.27 ' 0.09 0.90 0.30 4 Ambrosia psilostachya western ragweed , 24.8 24.83 0.03 0.10 - 1 4 4 Salicomia virginica ' Ambrosia psilostachya pickleweed western ragweed 24.86 25.3 24.9 27 0.04 1.7 . 0.13 5.67 4 Anemopsis califomica ' yerba mansa . ' 25.82 26 0.18 0.60 I . 4 Salix exigua Anemopsis califomica ' narrow-leaved w1110w yerba mansa , . 26.08 26.3 27.58 26.59 1.5 0.29 5.00 0.97 4 Baccharis salicifolla mule fat ' 26.85 27 0.15 0.50 4 Isocoma menziesii coastal goldenbush ' 26.9 27.04 0.14 0.47 I ' 4 Epilobium ciliatum ' . willow herb , 27.25 , 27.45 0.2 0.67 4 Ambrosia psilostachya . western ragweed . 27.41 ' ' 276 , 0.19 0.63.- 4 litter , litter. 27.6 27.75 0.15 0.50 I 4 Isocoma menziesll coastal goldenbush , 27.75 28.2 0.45 1.50 4 Ambrosia psilostachya ' western ragweed , 27.86 28.85 0.99 3.30 4 Salixexigua ' , narrow-leaved willow 28.55 28.6 0.05 0.17' I 4 Pic,is echioides •' , bristly ox-tongue . ' 28.3 28.4 0.1 0.33 4 Isocoma menziesii ' coastal goldenbush 28.85 28.95 0.1 0.33 4 Isocoma menziesii coastal goldenbush 28.96 -'30 1.04 3.47 I ' 4 Epiobium ciliatum ' willow herb 2902 29.23 0.21 0.70 4 Ambrosia psilostachya , western ragweed . 29 29.5 0.5 1.67 4 Epilobium ciliatum willow herb 29.38 29.42 0.04 0.13 I 4 Epilobium ciliatum willow herb - 29.5 29.55 -0.05 0.17 4 Picris echioides '. ' bristly ox-tongue 29.8 29.85 0.05 0.17 4 Pluchea odorata ' salt marsh fleabane - 29.75 29.95 0.2 - 0.67 I "'O - 6ôf9 - Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data I . October 2002 4 Sallxexigua narrow-leaved willow 29.82 29.85..0.03 0.10 I 4 Frankenia sauna alkali heath 29.95 30 0.05 0.17 heights Baccharis pilularis coyote bush 0.6 volunteer I , Baccharis pilularis coyote bush 1 volunteer Baccharis pilularis coyote bush 2.9 volunteer Baccharis pilularis coyote bush 1.7 volunteer I Baccharis pilularis coyote bush 1.6 volunteer Baccharis salicifolia : mule fat 3.3 container Baccharis salicifolia mule fat 3.3 container Baccharis salicifolia mule fat 2.7 container I Baccharis salicifolia mule fat , 3 container Baccharis salicifolia mule fat 3.1 container Baccharis salicifolia mule fat 3.2 container I Baccharis salicifolia mule fat 3 container Baccharis salicifolia mule fat 2.8 container Baccharis sauicifo!ia mule fat 3.4 container I Baccharis salicifolia mule fat 3.1 unknown Baccharis salicifolia mule fat 3.4 unknown Baccharis salicifolia mule fat 3.3 unknown I Baccharis sauicifolia mule fat 2.1 unknown Baccharis salicifolia mule fat 3 volunteer I , Baccharis salicifolia Baccharis salicifolia mule fat mule fat 2.8 2.5 volunteer - volunteer Baccharis salicifolia mule fat 2.2 volunteer I Baccharis Baccharis salicifolia salicifolia . mule fat mule fat 1.2 2.7 volunteer volunteer Baccharis salicifolia mule fat 1.1 volunteer Baccha,is salicifolia mule fat ' 2.5 volunteer I Baccharis salicifolia mule fat 2.6 volunteer Baccharis salicifolia mule fat , 2.1 volunteer Baccharis salicifolia mule fat 2.8 volunteer I Baccharis salicifolia mule fat 2.4 volunteer , Baccharis salicifolia mule fat , 3.3 - volunteer Baccharis salicifolia mule fat 3.1 ' volunteer I Baccharis salicifolia mule fat 3.1 , ' volunteer Baccharis salicifolia mule fat ' 2 volunteer Baccharis salicifolia mule fat - 1.8 volunteer I Baccharis salicifolia mule fat - 1.7 volunteer Baccharis salicifolia mule fat 1.9 - volunteer - Baccharis salicifolia mule fat 3.1 volunteer I Baccharis salicifolia - - mule fat - 3.1 . volunteer Baccharis salicifolia mule fat 2.7 volunteer Baccharis salicifolia - mule fat 2 volunteer I . Baccharis salicifolia mule fat - 2.1 - volunteer - Salix exigua narrow-leaved willow, 1.5 : container - - - - Salix exigua narrow-leaved willow - 3.2 container I - - - - - .7of9 I -,, -- - I Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data I ' 1 October 2002 . Salix exigua narrow-leaved willow 3.2 container I , Salix exigua . narrow-leaved willow 3.4 container S Salix exigua : - narrow-leaved willow 3.2 container" Salix exigua - narrow-leaved willow 2.4 * container I Salix exigua - . narrow-leaved willow 2.3 - container Salix exigua narrow-leaved willow 2.6 container Salix exigua - narrow-leaved willow 2.1 container 1 . Salix exigua . - . narrow-leaved willow 3.2 unknown. Salix exigua narrow-leaved willow '. 2.3 . . unknown Salix exigua - narrow-leaved willow 2.6 . unknown I Salix exigua narrow-leaved willow 2.3 volunteer - - Salix exigua , narrow-leaved willow 2.2 . volunteer - Salix exigua . narrow-leaved willow - 2.7 volunteer Salix exigua - - narrow-leaved willow 2.8 volunteer I ' Salix exigua . narrow-leaved willow 1.1' - volunteer Sallx exigua narrow-leaved willow 1.2 . volunteer Salix exigua narrow-leaved willow '1.3 volunteer Salix exigua narrow-leaved willow 1.7 volunteer Salix exigua - ' narrow-leaved willow 1.6 volunteer Salix exigua ' narrow-leaved willow . 1.6 - volunteer I . Salix exigua - narrow-leaved willow 1.7 volunteer Salix exigua . ' narrow-leaved willow ' 3.3 volunteer , Salix exigua . narrow-leaved willow - - 2 - volunteer I , Salix exigua . ' narrow-leaved willow - 2.1 ' volunteer Salix exigua narrow-leaved willow . 2.9 volunteer, Salix exigua ' - narrow-leaved willow , 2.8 - volunteer I '. Salix exigua narrow-leaved willow , 2.1 , , - volunteer - Salix exigua - narrow-leaved willow . 1.2 - volunteer - - Salix exigua Salix exigua - . . narrow-leaved willow - narrow-leaved willow ' 1.3 - 2 volunteer volunteer Salix exigua narrow-leaved willow 2 - ' ' volunteer I . Salix exigua Salix exigua ' - narrow-leaved willow ' narrow-leaved willow 2 ' 2 . volunteer volunteer Salixexigua narrow-leaved willow ' 2 volunteer' Salix exigua narrow-leaved willow ' 2.1 volunteer I Salix exigua narrow-leaved willow 2.8 . volunteer Salix exigua - ' . narrow-leaved willow , , - 34 , volunteer Salix exigua ' '- narrow-leaved willow - 2 . volunteer I . Salix exigua narrow-leaved willow , , 1.4 volunteer Salix lasiolepis - arroyo willow ' - 3.9 . ' . container Salix lasiolepis . arroyo willow . . , - 4.8 container' Salix lasiolepis . ' arroyo willow 5.3 container Salix lasiolepis arroyo willow ' .7.2 - container. - , Salix lasiolepis arroyo willow '4 container' Salix lasiolepis arroyo willow . - .7 - container Salix lasiolepis ' - arroyo willow -. , - 7 -, container Salix lasiolepis arroyo willow . 3.8 container 8. of9. I I Olivenhain Wetland Mitigation Area Botanical Monitoring Raw Data I October 2002 . . Salix lasiolepis arroyo willow - 5.1 container I Salix lasiolepis . arroyo willow 3.8 container - Salixlasiolepis arroyo willow 6.7 container Salix lasiolepis arroyo willow 5 container I Salix lasiolepis arroyo willow, 4.9 container Salix lasiolepis arroyo willow - 3.3 volunteer Salix lasiolepis arroyo willow 1.2 . volunteer Saiix lasiolepis arroyo willow- 0.7 volunteer I Salix lasiolepis arroyo willow 4.7 volunteer I I l -,.,- - .. I 1: . I I I I I I .. .- I : 90f9 * I.. :... Jill - IA A 1' - - JIlL - I a a r -