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Home My WebLink About3466; OLIVEHAIN RD WIDENING AND REALIGNMENT; SECOND ANNUAL REPORT; 2000-05-01I TABLE OF CONTENTS SECTION : TITLE PAGE I 1 INTRODUCTION I 2 . INSTALLATION MONITORING 1 Maintenance Monitoring I Biological Monitoring . . . . .4 I : . 3SUCCESS STANDARDS J . . . 8 I . 4 CONCLUSIONS ' " . ;. . . 10 0 OH . '• '. . RECOMMENDATIONS H 10 H 6 0 REFERENCES , 12 . ,. .. . I LIST OF FIGURES . NUMBER :' TITLE PAGE '1 Project Location Map . 2 2 Site Map :. , 0 .3 i 3 Vegetation at Mitigation Site 9 I I . , ." '• 0 H, I 315051000 I' H I I . TABLE OF CONTENTS (Continued) I S , LIST OF TABLES 0 I NUMBER TITLE PAGE I 1 Olivenhain Road Wetland. Mitigation Area, Floral Species List, 0 December 1999 7 I S__ I 0 0 '0 LIST OF APPENDICES , I LETTER : ' TITLE * PAGE A' Soil Test Results ' ' A-i 1 ' ' 0'•' •*.!0,H . ' I I * - I I I p I I'. I 315051000 ' - •0. ' 0 * - 0 5 0, 0 u' I 1 INTRODUCTION This is the second of five annual reports for the Olivenhain Road Widening Project I wetland mitigation area. This report covers the period from December 1998 to December 1999. Ogden Environmental and Energy Services Co., Inc. (Ogden) is the iological monitor for the City of Carlsbad (City) to monitor installation and maintenance of the I . wetland mitigation area on this project: Ogden did not perform any other biological monitoring functions associated with the road widening project. The wetland mitigation I area is located along Encinitas Creek south of Olivenhain Road, approximately 0 8 mile east of the impact area at the intersection of Olivenhain Road and El Camino Real I (Figures 1 and 2) I Based on a biological survey and report (Mooney 1991), the City obtained California Department of Fish and Game (CDFG) Section 1601 Streambed Alteration Agreement I . No. 5-560-94 and U.S. Al-my Corps of Engineers (ACOE) Section 404 Nationwide Permit No. 95-20096-BH The included to construct the project. permit requirements the creation, planting, and five years of maintenance and biological monitoring of 0.5. acre of I wetland (0.34 acre southern willow scrub and 0.16 acre freshwater marsh) and 1.1 acres "npanan scrub transitional habitat at the top of the dike and on the slopes" I of 2 INSTALLATION MONITORING : Ogden's contract called for three monitoring visits during the second year, which were made in February, July, and August 1999 Maintenance Monitoring . . I The site was well maintained during the first 3 months following planting in late 1997, I but minimal maintenance took place over the next few months. The City accepted responsibility for the mitigation area installation Ogden met onsite with Fred Burnell, a I Parks Supervisor with the Public Works Department, to discuss the mitigation maintenance and monitoring program, and provided Mr. Burnell with a copy of the first - annual report, ,which outh.neg the needed maintenance and remedial measures I 1 315051000 1 I FIGURE I OGDEN Proejct Location Map ..... I Biology/011venhaln Road Wideningfwiliow_Rip Scrub. FH8 2 • .• ______________________________________ I- - • - • - - • • - ZZONC RUB \ - - 1 •. I' • •- - SCRUB MMCATMN AREA (.39 -•-••' ERN scRu8 ________ I - 'N[4iNE I * - GJSQ BRACKISH MARSH/FRI"AIVt rT/I I4&S Z MITIGAnON AREA, (.16 ACRES) J MARSH TRANSMON FOR 2:1 SLOPE & V ACCESS ROA0 RP - , •, ,, I N AM AC a4o i - ) \IUi ftt1JIL1 —-- °' i---' - - • 'RACXtSH 7 • - -: : .••-•..•.-• TION MARSH M0 5 AC. 1 ' • -.- . _____ -•--.- ___ •. - •••--- •• • ..- ____________ FRESH WAR MARSH I -- I ( CONSTRUCTION EASCMZNT •- 0 -- / - - ____ - - - - • • .• - - - • • • - na sos - ° - -. - - - - - - - o 11 o8e -•••--• -• - • - __ - - - • - • - - - I • : • - - AS Oftr _\ . : '•-...''. '- I I ?1lIl - _____ - - - - - - • U I U CITY OF r 21 I RIPAMN4 SCRUB tsmo ZONE 'Q--- = = = me 014 .:•: :... •.• • .....:.: ••.. • - - - - 6 I. LAD I I - • I -• 4 •, I - - _______________________ = - - - ' ii•...._ - - • -1 •.. : !:- : - -. - - - - - - - - ____________________ - = = . - - - _______ = ________ POW OUMA"m saw wft i OGDEN I Brology/0hvenhaln Road Wdening/Wetlands Mit Plan FH8 Conceptual Wetlands Mitigation Plan1 - F I G U R E - : -_ ________• - - ' - I / I i I I . ' Above average rains during the winter resulted in several erosion gullies on the north dike of the site. Ogden first notified the City of this problem in January 1998. Vegetation has taken over and now shades the gullies. I . Erosion from the adjacent Olivenhain Water District property to the north washed. from into sediment their property the mitigation area, which caused some erosion within the mitigation area. In addition to the erosion problem, the Olivenhain Water District I flooded the mitigation area by excessively (twice daily) irrigating their adjacent landscaped slope for a period of 3 months. This left a portion of the wetland mitigation I area with standing water, for several weeks, stressing the plants and killing a few. . At Ogden's July site visit, it appeared that little maintenance had been done since I Ogden's visit in February. Weeds had not been, controlled and had gone to seed and died. I (Centaurea Portions of the site were impassable because of the infestation of. yellow star-thistle its 'A soistitialis) with numerous sharp thorns. portion of the irrigation system had been rendered ineffective because of plant growth around the sprinkler heads, which I knocked down most of the water within a few feet of the sprinklers, resulting in large dry patches and dying container plants. The City authorized Ogden .to make an additional site monitoring visit in August to meet I with the landscape installation contractor and City. The landscape contractor indicated they would perform the necessary work so they could be released from their responsibilities for' the project., The City signed off on the contractor's work sometime I thereafter. Long-term maintenance responsibilities were then taken over by the City. 1 ' Biological Monitoring I Most container plants and seeded species are establishing as expected. Bulrush (Scirpus californicus), alkali rush (Scirpus robustus), yerba mansa (Anemopsis calfornica), arrow I . weed (Pluchea sericea), and narrow-leaved willow (Salix exigua) all began spreading 'beyond ,their 'container plant basins. These species are forming large spreading clumps and growing into each other, obscuringtheir distinction as individual plants. Volunteer invasion by salt marsh species and certain weeds indicates that wetland conditions have been created in the mitigation area (Reed 198,8). Species designated with I ' 315051000 , , ' ' 4 . . the ii'idicator category obligate wetland (OBL) "occur almost always (estimated probability >99%) under natural conditions in: wetlands." The designation facultative wetland (FACW) "usually occur in wetlands (estimated probability 67-99%), but occasionally found innonwetlands." The'plus (+) sign with facultative species is used to indicate a greater probability toward the higher end of the category estimate. Voluitëer pickleweed (Salicornia virginica) (OBL), saltgrass (Distichlis spicata) (FAqW), and alkali heath (Frankenia sauna) (FACW+) in the lower and more saline,' wetter zone of the mitigation area indicates that wetland conditions have been created. Like'ise, brass buttons (Cotula coronopfolia) and rabbit's foot grass (Polypogon mons,vlieisis) were dominant weeds during the first year of monitoring. Both of these species are classified as facultative wetland (FACW+), also lending support to the notion that wetland conditions have been created. A nunber of species, especially spiny rush (Juncus acutus), were browsed back in year 1 by rabbits but survive and continue to grow'.. Rabbit control on this site is impractical. No other -rodent damage was observed in year 2 monitoring. No insect or disease problems were observed. As discussed previously, weeds were not adequately controlled and dominate the site in some locations. Because the annual weeds bloomed and set seedl weeds have proven to be a competitive problem. Willow mortality was higher than expected at 40 percent because the irrigation system was not kept in good working order during the dry season and many plants died from an apparent lack of water. More drought tolerant species like giant wild rye (Leymus condensatus) and arrow weed were able to survive the dry conditions without significant harm. S The dikes are establishing well considering the salty soil conditions found there. Annuals like arroyo lupine (Lupinus succulentus) and phacelia (Phacelia tanacetfolia) dominated in tlie first months, with little seen in the way of perennial species by the February site visit. Most of the perennial species did germinate and are establishing. Giant wild rye, coastal sunflower (Encelia calfornica), and coastal go1denbush (Isocoma menziesii) are the most dominant native species on the dikes. As would be expected, most annual spe4ies were dead at the December 1999 monitoring visit. • 315051000 5 Above average rainfall during the winter rainy season of 1997-98 probably helped flush some of the excess salts from the surface layer of soil, improving growing conditions and helping with plant establishment The first annual monitoring took place on December 2, 1998 Ogden counted dead container plants, compiled a floral species list, and made observations on plant growth and establishment in the mitigation area Results from the first annual monitoring are in the fir annual report Successful volunteer species that contributed, significant cover include mule fat (Baccharis salicfolia), giant wild rye (Leymus condensatus) and arrow weed (Pluchéa sericea) Tabled is a floral species list for the Olivenhain Road wetland mitigation area. The floral species list covers both the wetland mitigation area and adjacent upland buffer areas, including the dikes. A total of 51 species have been observed at the project site to date, plus several unidentified grasses I - - 315051000 6 I I , I Table OLIVENHAIN ROAD WETLAND MITIGATION AREA I . . FLORAL SPECIES LIST December 1999 I Scientific . Common Name Name Acacia longfolia Sydney golden wattle I A4agallis arvensis scarlet pimpernel * Anemopsis calfornica yerba mansa • I * * Artemisia douglasiana Artemisia calfornica . Douglas mugwort . California sagebrush * Aitemisiapalmeri Palmer's sagewort Aóiplex semibaccata . Australian saltbush I : * Baccharis salicfolia mule fat * Bcfccharis pilularis coyote bush I : Brassica nigra Càrpobrotus edulis : .. black mustard : Hotentot fig . . .• * Centaurea soistitialis : yellow star thistle I -' Conyza canadensis . Côtula coronopfolia horseweed . brass buttons Ctrtqderia species . pampas grass : .Cynara cardunculus artichoke thistle I Cyperus esculentus S yellow nutsedge * Dzstichlis spicata . saltgrass * Encelia calfornica coastal sunflower I * Escthscholzia calfornica :. California poppy F4eniculum vulgare . fennel * Frankenia sauna . alkali heath I Gñaphalium species cudweed * Héterotheca grandflora . telegraph weed * Isocoma menziesii . : coastal goldenbush I * Isomerisarborea bladderpod * Juncus acutus • . spiny rush * Leymus condensatus giant wild rye I Ldbularia maritima • sweet alyssum * Ldtus scoparius . . deerweed * Lupinus succulent us • arroyo lupine . Melilotus species . . sweetclover I Myoporum laetum myoporum * Oenothera hookeri . Hooker's evening primrose '•5 • 315051000 . I . Table 1 (Continued) I OLIVENHAIN ROAD WETLAND MITIGATION AREA j FLORAL SPECIES LIST December 1999 I Scientific Name . Common Name I Pénnisetum clandestinum . . Kikuyugrass * Phacelia tanacetfolia Phaceila Picris echioides . .: bristly ox-tongue - I * Pluchea sericea - arrdw weed Plypogon monspliensis rabbit's foot grass Rphanus sativus . wild radish I * Rhus integrfolia . . lemonade berry Rzmex crispus curly dock * Salicornia virginica . . pickleweed I * Salix exigua : narrow-leaved willow - * Scilix.lasiolepis arroyo willow Salsola tragus Russian thistle I , * Sambucus mexicana .00 ' Mexican elderberry * Scirpus calforniêus bulrush * Scirpus robusta - ' alkali rush I . Sonchus oleraceus annual sow thistle Washingtonia robusta 0 , Mexican fan palm Uiidentified annual grasses I, '• • Denotes species native to San Diego County •0 , 0 Figure 3 shows photographic views of the wetland mitigation area as of the second annual O monitoring. . . . I . 3 SUCCESS STANDARDS 0 ' 00 •., 0 I ' Success standards for the project require 80 percent container plant survival at year 1, and 100 prcent thereafter. The standards also require 75 percent cover after 3 years and I , 100 percent after 5 years. Specific tree' height standards have not been designated for this project, but the Section 1603 Streambed Alteration Agreement calls for tree and shrub I , heights to be collected and discussed in the annual report. 1 . •'.., For the upland dikes portion of the project, container plant survival was 60 percent, I falling below the 80 percent success standard. For the-wetland portion of the project, container plant survival is 95 percent, meeting the 80 percent success standard. .There 'were no cover standards to be met in year 2, but at the end of its third year of monitoring, I 315051000 - 0 , - 8 1 Riparian scrub transition zone OGDEN Vegetation at Mitigation Site 2000 DDDD Biology/OlivenhainRoad Widening/Willow-Rip ScñjbFH8 9 Ogden believes the project will meet its third year success standard of 75 percent cover. I Tree and shrub heights were not collected as part of biological monitoring for the project, so they were not assessed. 4 CONCLUSIONS . . I The Olivenhain Road biological mitigation area appears to be progressing satisfactorily after 2 years of landscape maintenance and biological monitoring. Native species cover I is developing at a satisfactory, rate, however invasive exotic pampas grass (Cortaderia sp.) is a major concern at this time. In year 1, container plant survival fell below success standards on the dike structure, but I met standards in the wetland portion of the site. Despite meeting overall success standards in the wetland, willows did not meet survival standards at 77 percent. Ogden I attributes the loss of willows to a lack of irrigation during the dry. The young willows had not become established enough yet to survive Without irrigation during the summer. I After 2 year, it appears wetland has been successfully created in the wetland mitigation area because obligate wetland and facultative wetland species have volunteered into the project. With adequate maintenance to ensure the establishment of desirable native species and to keep invasive exotic weed species under control, the mitigation should ultimately prove successful. I . 5 RECOMMENDATIONS . For year 3 of the 5-year maintenance and monitoring program, Ogden recommends the 1 . following items be completed by the City: . S 1 1. Set up a meeting between Ogden and the maintenance supervisor to ensure the maintenance crew knows all the species present and which weed species should be controlled; 5, 5 5 5 .. 5 5 • S S 2. Repair, erosion gullies on the dike using 1-gallon potted giant wild rye I . . (Leymus condensatus). I ''•, •: I 315051000 5.. , 10 . • S S 1 .. I • * -. Plant 125 èontainer plants using approximately equal proportions of California I sagebrush (Artemisia alfornici); mule fat (Baccharis salicfolia), giant wild rye (Leymus condensarus), Palmer's sagewart (Artemisia palmeri), and arrow, I . weed (Pluchea sericea). The plants should be ordered for September delivery from Tree of Life Nursery in San Juan Capistrano (949) 728-0685, or another native plant supplier. Keep the irrigation system off during the rainy season so lông as rainfall is U adequate to keep the plants healthy. Begin irrigating again in spring as the rainy season comes to an end. Inspect the irrigation system regularly and I prune growth around sprinkler :heads,,as needed, to maintain adequate sprinider coverage. * Apply agricultural gypsum at the rate of 20 pounds per 1,000 square feet and I S Sarvon wetting agent,.or approved equal, at the rate of 1 pint per 1,000 square feet, to all growing areas of the project site. I • Control all growth around container plants until the plants are established enough to avoid being out competed, and to facilitate biological monitoring. I • Ogden can point out to the landscape maintenance supervisor which plants no longer require clearing. Control the following invasive exotic weed species whenever they appear I onsite: .salt cedar (Tamarix sp.), pampas grass (Cortaderia sp.), castor bean (Ricinus communis), fennel (Foeniculum vulgare), common cocklebur (Xanthium strumarium), gum tree seedlings (Eucalyptus sp.); yellow star- thistle (Centaurea soistitialis), and giant reed (Arundo donax). I 8. Control annual weeds to keep them from becoming competitive and dominant.., - Species that were in need of control in year 1 that may need continuing control measures include: black mustard (Brassica nigra), wild radish (Raphanus I sativus), milk thistle (Silybum marianum), bur clover (Medicago hispida), and I S sow thistle (Sonhus asper). S . S '•. - - . I 315051000 11 I 6 REFERENCES I Brian F. Mooney Associates. 1991. Biological Survey and report for the Olivenhain Road widening/realignment and flood control project. June. I Reed; Jr., Porter B. 1988. National list of plant species that occur in wetlands: California (Region 0). May. I H p : i .• I I H I I I I I I I I • 315051000 • 12 : i TIRRZIFIN LANDSCAPE Fax May 31 18:56 9-29-197 I I ALA! I kUti AGI- I SEkvicii' 7L072778d I __ EED\'/IC'- - SOIL PLANT AND WATFA ANAL MS I SOIL ANALYSIS RESUL us SEPTEMBER 26 W91 I TARZIAN LANDSCAPE LAB #: 18018-1 P;o. BOX 1398 DATE SUBMITTED. 9-23-97 CARLSBAD, CA 92018 .. PROJECT OLIVENHEIN ROAD MITAGATION SAMPLE ID, WETLAND MITAGATION SITE - .. - -'----- - I SATURATION EXTRAC r RESULTS '. . COMMENTS 8a1urs(Ion Percentage 35 SANDY LOAM pH, units 6.41 SLIGHTLY ACID I ECe. mmhos/cm 2.6 HIGH Calcium, meq/I 4.2 REFER TO SAR Magnesium, meq/I 4.4 REFER TO SAR Sodium, meg/i 11.2 REFER TO SAR Chloride, m.q/I , 13.2 - .. ACCEPTABLE TO HIGH Boron ppm 04 ACCEPTABLE Sodium Absorption Ratio 5 4 HIGH POTASSIUM CHLORIDE EXTRACT Nitrate-N. ppm 12 LOW - OLSEN EXTRACT I Phosphorus, ppm 11 LOW AMMONIUM ACETATE I :XTRACT I Potassium, ppm. 194 . OPTIMUM '10 HIGH Calcium, ppm .. 612 iow MagnesIum, ppm 231 HIGH Sodium, ppm 263 HIGH I DPTA EXTRACT Zinc ppm 0 81 LOW Manganese, ppm . 17.4 . OPTIMUM - Iron ppm 471 OPTIMUM 1 Copper, ppm 0.38 LOW BASE SATURATION PERCENTAGE RESULTS SUGGESTED RANGES Potassium, % 7-5 3 - I Calcium, % .. 46.2 , 86 - 75 Magnesium ,*/* 291 " .' 12 - 20 $odlum% 173 0 5 FREE LIME NIL U you should have any qu stions pleasc, f& tree to contact us at any tune I 'ft I 21SE VICE I II 2142 V INDUSTRIAL COURT. VISTA, CALIFORNIA 92053 TARZIAN LANDSCAPE Fax May 31 18:56 9-29-1997 11.46A? Fl-Ott AC1 SEkv ICE 7617270784 I _-jG SER.VICEW SOIL PLANT ANb WATER ANALYSIS SOIL ANALYSIS RESUL:$ I SEPTEMBER 20,1097' TARZIAN LANDSCAPE LAB I P.O. BOX 1398 DATE SUBMITTED 9-23-97 CARLSBAD, CA 92018 "PROJECT OLIVENHEIN ROAD M1TAGATION SAMPLE ID UPLAND MITAGATION SITE I SATURATION EXTRAC RE(PLTS COMMENTS Saturation Percentage -37 SILT LOAM PH, unIts : 6,9 SLIGHTLY ACID I PC., rnmhos/cm 1.9 ACCEPTABLE Calcium, m.qfl - ' 5.5 REFER TO SAR Magnesium, m.qlI 2.9 REFER TO SAR Sodium, m.q/I - . 8.2 -" REFER TO SAR Chloride, maq/I I - •88 .. ACCEPTABLE Boron ppm 06 - ACCEPTABLE Sodium Absorption Ratio 40 ACCEPTABLE I POTASSIUM CHLORIDE EXTRACT Nitrate-N ppm 14 LOW OLSEN EXTRACT - I Phosphorus, ppm 16 LOW AMMONIUM ACETATE I -'XTRACT U Potassium, ppm 188 - - OPTIMUM. Calcium, ppm 1679 OPTIMUM Magnesium, ppm ..351 HIGH Sodium, ppm 214 - HIGH - I DPTA EXTRACT Zinc, ppm 328 , OPTIMUM Manganese, ppm ' 13.6. OPTIMUM -. Iron, ppm . 40:1 OPTIMUM Copper ppm 060 OPTIMUM BASE SATURATION PERCENTAGE RESULTS SUGGESTED RANGES Potassium, % 3.8 3'. 7 I Calcium, % 65.9 .. 65 - 75 Magnesium .% . 23.0 12 - '20 Sodtum% 73 0-5 FREE LIME NIL It you should have any qu istions please feel free locoritact us at any time. /M r rVi La I a, nomlit sif I AGIsEfICEV'o H -- I I - 2142 8' INDUSTRIAL. COURT • VISTA, CALIFORNIA 92083 TRRZIRN LNDSCRPE Fax : .. Jun 02 0:38 --1Y7 11 47Ai FROt1 AGRI SERVICE 7607270734 I JAGRI SEP%VICF- No SOIL PLANT AND WATEA ANALYSIS SOIL ANALYSIS RESULFS , SEPTEMBER 26, 1997 TARZIAN LANDSCAPE LAB #: 18018-3 P.O. BOX 1398 DATE SUBMITTED: 9-23-97 I CARLSBAD, CA 92018 .: PROJECT QLJMENHEIN ROAD MITA(ATIQN - SAMPLE ID !EAYWF'E5_oJ 41?) SATURATION F.XTRAC RESULTS COMMENTS —.--___—• I Saturation Percentage 53 CLAY LOAM pH, units . .7.4 ALKALINE. ACCEPTABLE ECe,mmhos/cm . 6.4 - :.. HIGH • Calcium meq/l 1 7 REFER TO SAR ' Magnesium, meqll Sodium, meqfl 71 30.5 REFER TO SAR .. . REFER TO SAR Chloride, meqll i35 0 HIGH I Boron, ppm 05 ACCEPTABLE 8oium Absorption R60u 144 HIGH POTASSIUM CHLORIUL LXI RACT I Nitrate-N ppm 7 LOW OLSEN EXTRACT I Phosphorus, ppm 7 LOW AMMONIUM ACETATE I XTRACI Potassium ppm 273 . LOW Calcium, ppm 5787 OPTIMUM I Magnesium, ppm 924 .. . OPTIMUM Sodium, ppm 1136 HIGH I DPTA EXTRACT 1 Zinc, ppm '125 OF I IMUM Manganese ppm -.5.2 LOW Iron, ppm 11.3 OPTIMUM Copper, ppm 1 10 OPTIMUM BASE SATURATION PECENTAGE RESULTS SUGGESTED RANGES. Potassium, % . 1.7 3 - .7 Calcium, % . . 68.4 65 - 75 I Man.sIum ,% . Sodium% 18.2 12 - 20 117 0 5 FREE LIME NIL 1, If you should have any qu stions please feel free to contact us at any time. a Me /Qr6n6mis'l I AGSE VICE I 2142 8 PNC#STRIAI. COURT • VISTA, CALIFORNIA 92083