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HomeMy WebLinkAbout20090858 Ver 2_Mitigation Information_20090807EcoEngineering A division of The John R. McAdams Company, Inc. p 9-p 85 8 V? i CARL LLOYD BANK PARCEL ORANGE COUNTY, NORTH CAROLINA BANK PARCEL DEVELOPMENT PACKAGE MAM-09010 IE @F9 O V P Do AUG 7 2009 =ALITY VME"4. WATER BRHNG?i Research Triangle Park, NC August 2009 Post Office Box 14005 Research Triangle Park, North Carolina 27709 2 5 Meridian Parkway North Carolina 27713 33-5646 919-287-4262 i 919-361-2269 Fax www.ecoengr.com Design Services Focused On Client Success Table of Contents . 1.0 Project Location and Description ............................................................................................ 2 2.0 Project Area - Existing Conditions ......................................................................................... 2 2.1 Geologic & Soil Characteristics ......................................................................................... 2 2.2 Vegetative Communities ............................................................................................... 3 2.3 Threatened and Endangered Species ............................................................................. 4 3.0 Proposed Buffer Restoration Plan ............................................................................................ 4 4.0 Monitoring and Maintenance Plan .......................................................................................... 6 5.0 Nutrient Mitigation Potential .................................................................................................. 6 6.0 References ............................................................................................................................... 6 In-Text Tables Table 1. Mapped Soils within the Carl Lloyd Bank Parcel ............................................................ 3 Table 2. Plant List .......................................................................................................................... 5 Appendix A: Site Maps Figure 1: Site Location Map Figure 2: Proposed Riparian Buffer Restoration Area Figure 3: USGS Quad - White Cross Figure 4: Orange County Soils Survey Appendix B: Site Photographs • • 1 JEcoEngineering A division of The John R. McAdams Company. Inc. 0 1.0 Proiect Location and Description Located at the southwest quadrant of the intersection of Holly Creek Lane and Old Greensboro Road (SR 1005) in Orange County, North Carolina (Figure 1) is the proposed nutrient mitigation bank currently known as the Carl Lloyd Bank Parcel (Bank Parcel). The purpose of this Bank Parcel is to improve water quality within the B. Everett Jordan Lake watershed by providing off- site mitigation for development (both existing and proposed) requiring nutrient offsets. The proposed Bank Parcel is located within the Upper New Hope Arm of the B. Everett Jordan Lake watershed, inside of 14-digit USGS HUC 03030002060070. Stormwater runoff from this site drains into an unnamed tributary of Neville Creek (Stream Index #16-41-2-2-1-(1)), which drains into University Lake approximately three (3) miles downstream. According to the N.C. Division of Water Quality Basinwide Information Management System (BIMS), Neville Creek is classified as WS-II; HQW, NSW in this location. The overall tract, which consists of two (2) parcels, is approximately 74 acres with a proposed riparian buffer restoration area of approximately eleven (11) acres (Figure 2). Please note the parcel and parcel area information listed above is measured from Orange County GIS records. The actual area of the proposed riparian buffer restoration will be finalized upon completion of the survey of the conservation easement within the Bank Parcel Please note this Bank Parcel shall be established under the terms and conditions of the Cape Fear Basin Riparian Buffer and Nutrient Mitigation Umbrella Bank (Bank) made and entered into by Mid-Atlantic Mitigation, LLC (MAM), acting as the Bank Sponsor, and the North Carolina Department of Environment and Natural Resources - Division of Water Quality (DWQ). • 2.0 Proiect Area - Existinp- Conditions 2.1 Geologic & Soil Characteristics Based upon review of the United States Geological Survey (USGS) White Cross, North Carolina Quadrangle, the proposed Bank Parcel is located in the headwaters of Neville Creek with elevations ranging from f 550-feet to f 485-feet. Topographic relief and surface drainage is generally southeast (Figure 3). The property is located within the Piedmont Physiographic Province of North Carolina, specifically within the Carolina Slate Belt ecoregion. A review of the Ecoregions of North Carolina and South Carolina (Griffith et al., 2002) shows the geology in the area of the property is comprised of "mineral-rich metavolcanic and metasedimentary rocks with slately cleavage," which is finer grained and less metamorphosed than other eco-regions within the Piedmont. It is also common for streams to dry up, along with low yielding wells. The Soil Survey of Orange County North Carolina (Soil Conservation Service, 1977) lists the soils within the property as from the Appling-Helena Association. As stated in the soil survey, these soils can be generally classified as "gently sloping and sloping, well-drained and moderately well-drained soils that have a surface layer of sandy loam and a subsoil of sandy clay loam, clay, or sandy clay; on uplands." The specific soils within the project area (Figure 4) are described below in Table 1: 2 IlEcoEngineering A division of The John R. McAdams Company, Inc. Table 1. Mapped Soils within the Carl Lloyd Bank Parcel • Soil Type Hydrologic Soil General Description Group Appling HSG B The series consists of well drained, moderately permeable soils on ridges and side slopes of the Piedmont uplands. They are deep to saprolite and very deep to bedrock. Based on the classifications for this site, the slopes will range from 2 to 10 t)ercent. The Enon se" r ies consists of very deep, well drained, slowly permeable soils on ridgetops Enon HSG C and side slopes in the Piedmont. Based on the classifications for this site, the slopes will ........................... _............ .................. ..................... range.._from._2.._to._6...percent................ _............................_. _...... The Helena series consists of very deep, moderately well drained, slowly permeable Helena HSG C soils. These soils are on broad ridges and toe slopes of the Piedmont uplands. Based on the classifications for this site, the slopes will ...... ....... ....._.................... .................. _........... .............................. ..............._...... _..... _..... ................................................. _....... _........... _ .._ _._.._ range from .2 .._ to _ ._8percent_ - .................... _ ..................... _ .............. .. ...................................... The Herndon seri.... es consists of very deep, well drained, moderately permeable soils that formed in material mostly weathered from Herndon HSG B fine-grained metavolcanic rock of the Carolina Slate Belt. Based on the classifications for this site, the slopes will • range from 2 to 6 percent. ... ................ ----.-_._. _ ...._ ......_.. Soils of the Lignum series are moderately well drained, slowly permeable soils that Lignum HSG C formed in the residuum weathered from Carolina slate. Based on the classifications for this site, the slopes will range from 0 to 3 ......................................... .._._...................................................................................... The Wedowee series consists of very deep, well drained, moderately permeable soils that formed in residuum weathered from felsic Wedowee HSG B igneous and metamorphic rocks of the Piedmont uplands. Based on the classifications for this site, the slopes will range from 8 to 15 percent. 2.2 Vegetative Communities There are two distinct vegetative communities within the Bank Parcel that are generally characterized as a Piedmont Bottomland Forest, according to the North Carolina Natural Heritage Program (NHP) classification system (Schafale and Weakley, 1990), and pasture land. Pasture land areas are subject to periodic mowing and crop production (i.e. hay production). Pasture vegetation is a mixture of grasses and herbaceous species. The dominant grasses tend to be Johnson grass (Sorghum halepense), bermuda grass (Cynodon dactylon) and various fescue species (Festuca sp.). Located along the un-named tributaries to Neville Creek within the Bank Parcel are existing forested areas that can be characterized 40 as a Piedmont Bottomland Forest community. Due to historic agricultural activities surrounding the unnamed tributaries, this Piedmont Bottomland Forest community is fairly AEcoEngineering A division of The John R. McAdams Company. Inc. immature, and as a result, there is an abundance of early succession species such as loblolly pine (Pinus taeda), sweet gum (Liquidambar styraciflua), and red maple (Ater rubrum). Most notable is the presence of non-native invasive species such as multiflora rose (Rosa multiflora), Japanese honeysuckle (Lonicera japonica), Japanese stilt grass (Microstegium vimineum), and Chinese privet (Ligustrum sinense), which are indicative of a disturbed forest community. Typical dominant tree species within the Bank Parcel include various oak species (Quercus spp.), river birch (Betula nigra), American elm (Ulmus americana), American beech (Fagus grandifolia), tulip poplar (Liriodendron tulipifera), various hickory species (Carya spp.), loblolly pine, red maple, sweet gum. Dominant groundcover and secondary canopy layer species consist of common greenbriar (Smilax rotundifolia), poison ivy (Toxicodendron radicans), Virginia creeper (Parthenocissus quinquefolia), American holly (Ilex opaca), red cedar (Juniperus virginiana), various viburnum species (Viburnum spp.), Christmas fern (Polystichium acrostichoides), Indian wood-oats (Chasmanthium latifolium), New York fern (Thelypteris noveboracensis), and netted chain fern (Woodwardia aerolata). 2.3 Threatened and Endangered Species Some populations of plants and animals are declining because of natural forces or their inability to coexist with human activity. Plants and animals with Threatened or Endangered status are protected under the Endangered Species Act (ESA) of 1973 (16 US 1531 et seq.). According to the U.S. Fish and Wildlife Service (USFWS) web page (hqp://www.fws.gov/nc-es/es/countvfr.htrnl ); accessed July 3, 2009) the following species are listed as having federal protection in Orange County: red-cockaded woodpecker (Picoides borealis), Michaux's sumac (Rhus michauxii), and smooth coneflower (Echinacea laevigata). The bald eagle (Haliaeeletus leucocephalus) is also listed as occurring in Orange • County and is protected under the Bald and Golden Eagle Protection Act (BGPA) of 2008 (16 US 668-668c). EcoEngineering conducted field surveys by walking transects within the Bank Parcel area. The objective of the field surveys was to determine the presence of federally Threatened or Endangered species within the Bank Parcel area. There were no federally Threatened or Endangered species observed during the field surveys. The work inherent in restoring riparian buffers does not result in habitat destruction or modification for the above listed species. Therefore, it is reasonable to conclude the proposed work will have No Effect on Threatened and Endangered species. A formal Section 7 clearance letter will be obtained from the U.S. Fish and Wildlife Service prior to any construction activities. 3.0 Proposed Buffer Restoration Plan Pasture lands located outside forested areas within the Bank Parcel area will be ripped and scarified prior to vegetation planting activities. The established microtopography on leveled surfaces will promote diffuse flow and surface water storage. In addition, subsurface hardpans will be eliminated to promote vegetation growth/survival and to increase groundwater recharge rates. Grasses may be treated with herbicide to reduce competition with planted species. Where necessary, invasive species will also be treated with herbicide to insure they do not become dominant within the Bank Parcel. Also, old barb-wire en 1 i 1 e re?oved within the Bank Parcel and the boundary will b arked with eath r r? 4/` A/ , -/D r?'0 a ' .,d /,may USG, The proposed riparian planting plan will be develd ed by integrating the native plant species observed within the Bank Parcel area, along with selected species known to inhabit the Piedmont Bottomland Forest community type as described in Classification of the Natural Communities of • North Carolina (Schafale and Weakley, 1990) and procedures outlined in Guidelines for Riparian Buffer Restoration (NCEEP 2004) to institute species diversity. According to the Schafale and 4 FlEcoEngineering A division of The John R. McAdams Companv. Inc. Weakley publication, "Very few bottomlands of any significant size remain. While many • bottomlands exist as successional forest grown up in abandoned fields, intact bottomland forests are among the rarest of communities in North Carolina. Most of the bottomlands that have been cleared or logged in the past are dominated by loblolly pine, red maple, sweet gum, or sycamore." The restored riparian zone will be planted with bare root seedlings or containerized material consisting of bottomland hardwood species as outlined in Schafale and Weakley. Bare root seedlings, or containerized material, will be planted during the fall or early spring seasons. During the following fall, supplemental shrub and tree species will be planted if survival rates of previously planted seedlings are below target densities as determined in late summer (August- September). The planting plan will consist of individual hardwood tree and shrub species as listed in the table below. The goal is to plant 436 to 681 trees and shrubs per acre, with an approximate 8-foot to 10-foot spacing. Plant composition will consist of at a minimum of at least six, (6) of the tree species and three (3) of the shrub species list. Table 2. Plant List Scientific Name Common Name ....................................... _... _........ _. _....................... .... _........................ -.......................................---.-.....................................................................................................................................Trees raxinus pennsylvanica - ------ .................. ......................................................................................__..._.................................................................green ash......... . _ .................................... ........ _...... _................ ................. Platanus occidentalis ......... ......................... ............................. ...................... ...... .......................... .................... .........................._S.ycamore-.......................... _........__. Betula • michauxii river bircr. . _ ............. _ ...... . - ................. ater oak oak uercus..pnettos...._.....__....__ ........................ _ willow oak .......... ..... _ ........................ _.......... ._. -- - -- - uercus lauri olia ................................................. _............. . .-_._........ _.......... _....... _._..__................... ......_............. ......... _........... _...... _..._........... _....... _............................ ---................... _...... ...... ...... ..................................... laurel oak ............. _....... __............ __._...................... ................. __.... ............... ---....... Ulmus americana --.--.-.................. _._.._..........._............._........_._._...._....._............................_...--------.._._.............................. .. . ................. American Elm . ..........................._...._...__........_--- ...--.._._....._._... Liriodendron tuli a .era ..__ .................................... _...__...... ......... _.................................... __._.... ........... ---..... P. .........................__.... _..._.... ...... ---..._...---.... _................................................ ............ --.__._....._._..---.-_................................_..__._................__..._.._-............__.._......_....... tuli o lar ............ ..................P..P......p................._.__... .......... .... _............................... _....................................................................................... Small Trees and Shrubs . ... ..................... _ _ ............. _ ........................................ Corpus ori da g do _....._........._.._..._.........._.._._...._ ..................................... _.............. _...................... _.................. _ flowerin ..........................................._......................._...... _._...... _. l?yrica cerifera wax myr ttex -.._.... aca .. o1?.........................._.............._.._.................................................................................. -_- - American holl ........... Y ................. _...... .... ..................................... . ....................... _ arpanus caroliniana ironwood .... .................. _......... ...... ................................................................._._._..........................................................................................................._..........................................._. _.. Magnolia varganiana sweet bav ......... --.... ....... _ ....................... _............ _.... _.........._.__.........__..._..__........................ ----- Aroma arourijorta * Species composition may be adjusted based on local L? Temporary and permanent native herbaceous seed will be applied simultaneously to existing pasture land areas located outside forested areas within the Bank Parcel area. Temporary seed will provide cover until the permanent seed applied becomes established. Temporary cover will consist of millet (Echinochloa crusgalli), annual rye grain (Secale cereale), and crimson clover (Trifolium incarnatum). Permanent ground cover will consist of switchgrass (Panicum virgatum), deertongue (Panicum clandestinman), black-eyed susan (Rudbeckia hirta), and riverbank wildrye (Elymus riparius). 0 5 [jEcoEngineering A division of?he John R. McAdams Company, Inc. 4.0 Monitoring and Maintenance Plan • The Bank Parcel site will be monitored for five (5) consecutive years or until the required success criteria has been met as determined by DWQ. Monitoring activities will begin immediately following the completion of planting in order to alleviate any potential problems as they occur. Supplemental planting and additional site modifications will be implemented if necessary. Planting will likely occur in the Fall of 2009; therefore, the riparian restoration will be monitored the following growing season, projected to be the Summer of 2010. Monitoring activities will follow the terms and conditions of the Cape Fear Basin Riparian Buffer and Nutrient Mitigation Umbrella Bank (Bank) made and entered into by MAM, acting as the Bank Sponsor, and DWQ. Vegetation within the restored riparian buffer will be monitored annually for five (5) consecutive years after the first full growing season. A monitoring report will be submitted annually to DWQ no later than December 31 of each monitoring year describing the conditions of the Bank Parcel and relating those conditions to the success criteria. The Bank Parcel site will contain approximately 9 vegetative monitoring plots, with the total area not exceeding two (2) percent of the proposed riparian buffer restoration area. The plots will be monitored in accordance with the CVS-EEP Protocol for Recording Vegetation (CVS-EEP, v4.2). Ten (10) by ten (10) meter square plots will be permanently established following completion of the planting phase and at least two opposing corners will be permanently installed and surveyed for future use. The plant species, density, survival rates, and the cause of mortality, if identifiable, will be recorded within each plot. Vegetation plots will be sampled and reported annually. The primary focus of the vegetative monitoring will be solely on the tree and shrub stratum, although herbaceous species encountered may also be recorded. . The target density for the riparian buffer is a minimum of 320 trees and shrubs per acre at the end of the five (5) year monitoring period. Vegetation monitoring will occur between August and October. A determination will be made regarding the success of the project following the collection and evaluation of ecological and physical monitoring data, photographs, and site observations. 5.0 Nutrient Mitigation Potential The Carl Lloyd Bank Parcel will provide nutrient mitigation credits for development impacts within the Upper New Hope Arm of the B. Everett Jordan Lake watershed (i.e. the service area). It is expected to provide approximately 16.1 acres of land of varying riparian buffer width along approximately 3,500 ft of stream within the Bank Parcel boundary. Of the 16.1 acres, approximately eleven (11) acres will be used to generate nutrient offset credits. The exact amount of nutrient mitigation potential (currently based on 2,273 lbs/ac of riparian buffer restoration) will be finalized upon completion of the survey of the conservation easement within the Bank Parcel and will be included in the Bank Ledger. Please note this Bank Parcel is not intended to function for mitigation for buffer impacts. It will only be used for nutrient offsets. 6.0 References United States Geological Survey, 7.5 Minute, Topographic Map of the White Cross, North Carolina adran e, 1993. • Griffith, G.E., Omemik, J.M., Comstock, J.A., Schafle, M.P., McNab, W.H., Lenat, D.R., MacPherson, T.F., Glover, J.B., and Shelburne, V.B., 2002, Ecoregions of North Carolina FiEcoEngineering A division of The John R. McAdams Company. Inc. and south Carolina, (color poster with map, descriptive text, summary tables, and photographs): Reston, Virginia, U.S. Geological Survey (map scale 1:1,500,00). United States Department of Agriculture, Soil Conservation Service. Soil Survey of Orange County, North Carolina, 1977. Schafale MP and AS Weakley. 1990. Classification of the Natural Communities of North Carolina: Third Approximation. North Carolina Natural Heritage Program, Division of Parks and Recreation, Department of Environment and Natural Resources. Raleigh, North Carolina. North Carolina Ecosystem Enhancement Program (NCEEP) 2004. Guidelines for Riparian Buffer Restoration. http•//www nceep netnews/rgports/buffers pdf Lee Michael T., Peet Robert K., Roberts Steven D., and Wentworth Thomas R., 2008. CVS-EEP Protocol for Recording Vegetation Level 1-2 Plot Sampling Only. Version 4.2 • AEcoEngineering A division of The John R. McAdams Company, Inc. r? u APPENDIX A Site Maps AEcoEngineering A division of The John R. McAdams Company, Inc. FIGURE 1 -SITE LOCATION MAP 0 0.5 ? 2 EcoEngineering I Miles A division of The John R. McAdams Company, Inc. 1 inch equals I miles r ,.. v c N, ? b 3 i, „„ as % .y6plz; 's ,a' *s da, bsq'r` aK ; ,. `+4 em,"" a ?, ?4?,^ 01.4 m IF W, S r•*`r- '• +. .,_` • , s. 3 o-#'3 I ^? @ p6z t __ _9 t x? `?•... A .rs?. @ • «,y -. 2,4. x-arx i z r..? ?? ? .: a ? '1? , fi. ? fie,,` ? .??+??„ ? ?s? fi?• „? YtP ' k ".?( iEs 3• Y,{r°.?z:- k " p3 #ss' _ ,?a';. 2.7 #s .:8."'k s ?, A - ?•"? ?? ..+t e ^` *,3, a"hjx?a' .?,4 9 . b 11, % 8*4 J, 4 r?{ ?' fxr w ^? k„'"?? 4 s >a?h: ,q 4 #yy'.' F3 F.-',? * kr P b X ?' g n y T? 5r"*» ' 4 i Al` 41 j j;g m ' t ,r,:. sir - { '` l *'1:c # ,t,?•,:` '", i t' t k'E k t '+R i i# IN -:Y1 7 4-F - k e Legend Site , Proposed Buffer Easement k 77 FIGURE 2 - PROPOSED RIPARIAN BUFFER RESTORATION AREA EcoEngineering 0 250 500 1,000 Feet A division of The John R. McAdams Company, Inc. 1 inch equals 500 feet FIGURE 3 - USGS QUAD - WHITE CROSS 0 1,000 2,000 4,000 Feet EcoEngineering A division of The John R. McAdams Company, Inc. I inch equals 2,000 feet FIGURE 4 - ORANGE COUNTY SOILS SURVEY 300 600 1,200 Feet EcoEngineering A division of The John R. McAdams Company, Inc. 1 inch equals 600 feet • • APPENDIX B Site Photographs [jEcoEngineering A division of1Le John R. McAdams Company, Inc. ;aa3 OOZ simba you! 1 -oui `Xuud[uoj swupVOW '2I uuof 3141 JO uois!n!p d Jay NEEN 5u1jeaulbu:?0o3u °°" °°Z °°` ° S01OHd 311S 01 A3N ?-j . alit .` *4 a tx PITS " "'y,? ce`' `&aA" ' ,,r,• jYe, tib ?..' i w '...._ ' 444 ••r« ??? w4.?E^? '? < t#? ' ,` ay'?iYb +1?? .la?`ai r a»`+?+ e wo, its E .•? ?3 `+?' w ?,• bc ? ` ? ,` ,two ° c S : ¢ a J& q Q. Pit $ ?/. +C ^ c' +'°?*'? a }rt='r? ei1i Yr '. °a%,tt ¢? ' ts'46 ti wtt +. b??, "' ` , 40 IO`' A A ,¢ W 71 lot ? t? "? ?.`° c .c• ?%r. ? per„ e.. ' ? ;?:?? ? $#; "` , .; -:?i'.? ',? '. S t4. 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I q• [ s y ,,,,y 9th f !aR Awl asp ,' i 3efT b a f ' `r., ?A1 r*{ X86 t a°? 3?nG r f ,g ? - s ,'',? rd i it • ,.?4?r . i ! Z w+ :fit 41?'?.?5 tf?? ?{E1 JS6 y,7 tie vt e?c? /i f ;. 'aE ?' tit iE rt v` rr'tiT3?_°.s ? nf: *x K ',? t o- ? .{. ?'R? Aa•.. 1 ira?`,?r ?? !. •,. e n 'CV Ap,r: ?:?c.. _?,... . S.?-r.. "yt1 ?'?b '''W . ;«. Y: r .. s. ?.'?i. iY :. ?r7n1??h .. . , r ?r??` ..r j'? _'r9" •_ i4 ...k a-?s. >. 7? .... Photo 5: Existing conditions facing northwest (August 5, 2009). L' • Photo 6: Existing conditions of stream within forested area (August 5, 2009). • • • Photo 7: Existing conditions of existing forested area (August 5, 2009). Photo 8: Existing conditions facing southeast (August 5, 2009). • • • ?? r'?? y?y;K S r +,+.. •? ?,.•,?i . Sri ... , ? ? i'F ? R7.- ?'° -.'?? i vc; ? ??jt ? . r -T : ••z ?. 4 f:. tt a '" tl ?17?. ... ? ? ? . ]1 )? ?+Yy?'`' Y;ry •4.y, " ? g?j t? .? "?i „?, ? `? ?,t'?., Photo 9: Existing conditions northwest (August 5, 2009). ?." ,.A •. • , # f 'f Y ? r r - t 1 »?.'`J1ra _ 4 Y*' µy ?'1 ?x?ro< s `t '-,°?$?7a?b:.?i:, •;s' v...at'4i1?. '? ? ?.. :.'?31. ?+?a ?'.?iFr.°$'y '`,.AYI•?",.•t.?l?,?`N . Photo 10: Existing conditions facing northeast (August 5, 2009). • 0 0 Photo 11: Existing conditions facing southeast (August 5, 2009). Photo 12: Existing conditions northeast (August 5, 2009). • 0 Photo 13: Existing conditions facing southeast (August 5, 2009). Photo 14: Existing conditions facing southeast (August 5, 2009).