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Fishman Environmental Services- Wetland Determination 4 Fishman Environmental Services, LLC CONSULTANTS IN ECOLOGY AND NATURAL RESOURCE MANAGEMENT TECHNICAL MEMORANDUM Date: September 20, 2001 To: Duane Roberts, City of Tigard From: C. Mirth Walker, PWS Subject: Wetland Determination and Vegetated Corridor Condition Assessment SITE NAME: Proposed Tigard Library Site (approximately 5.5 acres) SITE LOCATION: East of Hall Boulevard, south of Fanno Creek T2S, R1 W, Section 2 SE 1/4; Tax Map/lots 2S 1 02DA 600 and 02DD 100 & 200. Southern tax lot address is 13560 SW Hall Boulevard OWNER: Fred Fields DATE OF SITE VISIT: September 13, 2001 PROJECT STAFF: C. Mirth Walker, PWS, Wetlands Program Manager Stacy Benjamin, Wetland Ecologist FES PROJECT: 98073A INTRODUCTION AND BACKGROUND INFORMATION Fishman Environmental Services, LLC (FES) was contracted by the City of Tigard to conduct a wetland determination/delineation and vegetated corridor condition assessment as a pre-purchase survey at a site proposed for the new library. The site is located immediately east of Hall Boulevard and south of Fanno Creek in Tigard,Oregon(Figure 1). Fanno Creek flows east and south along the north and east site boundaries. The study area on the site was the area located outside of wetlands mapped in the Local Wetlands Inventory and the floodway along Fanno Creek, per City of Tigard mapping (Figure 2). No wetlands are mapped on the site adjacent to Fanno Creek on the Beaverton, Oregon National Wetlands Inventory Map(Figure 3);Fanno Creek is mapped as riverine,upper perennial,open water, intermittently exposed/permanent (R3OWZ). A tributary to Fanno Creek flows east along the southern property boundary.This tributary is mapped as palustrine emergent wetland with persistent vegetation and a saturated/semipermanent/seasonal water regime(PEM1 Y).Two ponds have been excavated along its course: the west pond is mapped as palustrine diked/ impounded open water wetland,artificially flooded,with an intermittently exposed/permanent water regime(POWKZh)and is located south of the subject site; and the east pond is mapped as palustrine forested wetland with broad-leaved deciduous vegetation and a saturated/semipermanent/seasonal water regime(PFO 1 Y) and is located on the southern tax lot, but outside the study area boundary. o 0 0. 0 0 o. p rt% 434 NW Sixth Avenue,Suite 304 Portland OR 97209-3600 phone:503 224 0333 fax 503 224 1851 www.fishenserv.com Soils on the site are mapped as Quatama loam with 3-7 percent slopes(unit 37B) in the Soil Survey of Washington County, Oregon(USDA SCS 1982;Figure 4). Soils along Fanno Creek are mapped as McBee silty clay loam(unit 30).A narrow finger of the hydric Verboort silty clay loam(unit 42) is mapped through the center of the site. McBee soils may have hydric Cove and Wapato soil inclusions. Quatama soils are not listed as having hydric soil inclusions on the Hydric Soils List of Washington County Area, Oregon (USDA SCS 1989). The site was identified in the City of Tigard Local Wetlands Inventory(LWI)conducted by FES in 1994-1995 as being bounded on the north, east, and south by Unit 7, Middle Fanno Creek (see Attachment A). Wetlands to the east of the site include sites E-19 and E-20; the tributary and excavated pond to the south of the site include sites E-17 and E-18. No wetlands were determined to be present on the site within the study area boundary.The wetland boundary of the LWI-mapped wetland was flagged along the south edge of the site along the intermittent tributary wetland and the boundary was surveyed by a City survey crew.The pond to the. east of the proposed building site was not flagged in the field since it is located outside of the study area boundary. The wetland boundary is shown in Figure 5. The banks of Fanno Creek are very steep(almost vertical and undercut)in some areas along the north and east edges of the property. Wetlands occur along the fringe of Fanno Creek at the toe of slope and are confined within the steep stream banks. Wetlands occur from the current water level up to about 4 feet above the water level,based on vegetation changes and the observed ordinary high water mark. These wetland fringes were not marked in the field. The vegetated corridor was found to be in a degraded condition and will require enhancement to good condition upon site development to meet Clean Water Services requirements. The required setback for Fanno Creek,for wetlands associated with Fanno Creek,and the tributary south of the site is 50 feet. METHODOLOGY The methods for determining the presence of wetlands follow the routine methodology of the Army Corps of Engineers Wetlands Delineation Manual(Environmental Laboratory, 1987)used by both the Corps and the Oregon Division of State Lands. Field work was conducted on September 13, 2001. Soils, vegetation, and indicators of hydrology were observed at 3 sample plot locations to document site conditions (Attachment B). Sample plots were not marked in the field (pasture is currently grazed by horses). The wetland boundary along a portion of the south property line was flagged by FES and surveyed by the City of Tigard survey crew.Vegetation in the 50 foot vegetated corridor setback was sampled at three locations (Attachment C). A map of vegetated corridor communities will be prepared upon request. Site photographs are also available upon request. Fishman Environmental Services, LLC Project 98073A Tigard Library Site Wetland Determination Page 2 SITE CONDITIONS The subject site is located on a terrace above Fanno Creek. Residential houses and associated buildings are present on the north tax lot and on the south tax lot. Four horses currently graze the site. The site visit was conducted during the dry part of the year. Wetland Determination Plot 1 was located in a slightly green swale in the north portion of the site on a broad terrace above Fanno Creek. Vegetation was dominated by tall fescue(Festuca arundinacea,FAC-), quack grass (Agropyron[[Elytrigia]]repens,FAC-),and bentgrass(Agrostis species,probably FAC),and did not meet the hydrophytic vegetation criterion. Soils were a dark brown(10YR 3/3)silt loam with many coarse light yellowish brown(2.5Y 6/4)redoximorphic concentrations(mottles).The matrix chroma of 3 indicates the presence of non-hydric soils. No indicators of hydrology, such as oxidized root channels around living roots,were observed.Plot 1 was determined to be upland based on vegetation and soils, and lack of any indicators of wetland hydrology. Plot 2 was located in the emergent wetland area south of the subject site.Vegetation was dominated by reed canarygrass (Phalaris arundinacea, FACW); soils were a gleyed dark greenish gray(10G 3/1)silty clay laom with few fine dark yellowish brown(10YR 4/6)redoximorphic concentrations and were saturated to the surface. This plot displayed all three wetland criteria. It should be noted that purple loosestrife(Lythrum salicaria,FACW+),a very invasive,and noxious,quarantined weed in the State of Oregon, is present in small populations in the wetland and should be removed and destroyed(Attachment D). Plot 3 was located approximately 15 feet north of Plot 2, about 13 feet north of the wetland boundary. Vegetation was dominated by bentgrass (Agrostis species, probably FAC), tall fescue (Festuca arundinacea,FAC-),and ornamental hawthorn(Crataegus monogyna,FACU+), and did not meet the hydrophytic vegetation criterion. Soils were only shallowly sampled due to their dry hardness, and were a dark brown(10YR 3/3) silt loam with no redoximorphic concentrations. No indicators of wetland hydrology were observed. Plot 3 was determined to be upland based on vegetation and soils, and lack of any indicators of wetland hydrology. Vegetated Corridor Condition Assessment The 50 foot wide vegetated corridor adjacent to Fanno Creek consists of the steep slope adjacent to the stream and the grazed pasture at the top of the slope. Grazed pasture constitutes the community adjacent to the wetland boundary along the south property as well,with the addition of scattered non- native trees and patches of Himalayan blackberry.Both communities are in a"degraded"condition. Further information about the vegetated corridor is available upon request(maps and photographs). Degraded vegetated corridors are required to be enhanced to a"good"corridor condition under Clean Water Services guidelines as part of any site development. Fishman Environmental Services, LLC Project 98073A Tigard Library Site Wetland Determination Page 3 CONCLUSION Wetlands were delineated along a portion of the southern property boundary, outside of the study area boundary.The study area is upland;wetland setbacks and the floodway extend onto the subject tax lots. The 50 foot vegetated corridor is in a degraded condition. The services provided under this contract as described in this report include professional opinions and judgements based on data collected. These services have been provided according to generally accepted practices of the environmental profession. Wetland determination and wetland boundary delineation is an inexact science, and different individuals may disagree on exact boundaries. The conclusions drawn in this report represent our best professional judgement after examination of the site conditions and background information, taking into consideration the time of year of our delineation.This report is not jurisdictional until reviewed and confirmed by the Oregon Division of State Lands and/or the U.S.Army Corps of Engineers(the Corps is currently only reviewing wetland delineations when accompanied by a wetland fill permit application). This report documents the investigation, best professional judgment and conclusions of the investigator. It should be considered a Preliminary Jurisdictional Determination and used at your own risk until it has been reviewed and approved in writing by the Oregon Division of State Lands in accordance with OAR 141-090-0005 through 141-090-0055. It should be noted that this technical memorandum does not meet the full requirements of the Division's rules for jurisdictional determinations;additional information(such as precipitation prior to the site visit)will be required to meet the needs of the Division. Please contact the undersigned with any questions. Report prepared by: Report reviewed by: C. Mirth Walker, PWS Stacy N. Benjamin Wetlands Program Manager o ret a dAe� Wetland Ecologist �, fb pro # cg learn 100 Io ft c> $es 000415 ••,.,by dei Wetl� �� rtti���� Fishman Environmental Services, LLC Project 98073A Tigard Library Site Wetland Determination Page 4 REFERENCES Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual, Technical Report Y-87-1. U.S. Army Engineer Waterways Experiment Station, Vicksburg, Miss. Fishman Environmental Services. 1994-1997. City of Tigard Local Wetlands Inventory "Offsite Option"and Wetlands Assessment. Prepared for City of Tigard. FES 94043. Hitchcock,C.L. and A. Cronquist. 1973.Flora of the Pacific Northwest.University of Washington Press, Seattle. Kartesz, J.T. 1994. A Synonymized Checklist of the Vascular Flora of the United States, Canada, and Greenland. Volume 1-Checklist and Volume 2-Thesaurus.Second Edition.In association with Biota of North American Program of the North Carolina Botanical Garden. Timber Press, Portland. Kollmorgen Instrument Corporation. 1998 revised washable edition. Munsell Soil Color Charts. Baltimore. Reed,P.B.,Jr. 1988.National List of Plant Species that Occur in Wetlands:Northwest(Region 9). U.S. Fish and Wildlife Service Biological Report No. 88 (26.9). Reed,P.B.,Jr.,et al. 1993.Supplement to List of Plant Species That Occur in Wetlands: Northwest (Region 9). USDA SCS. 1982. Soil Survey of Washington County, Oregon. United States Department of Agriculture Soil Conservation Service in cooperation with Oregon Agricultural Experiment Station. USDA SCS. 1989. Hydric Soils in Washington County Area, Oregon. USDI Fish and Wildlife Service. No date. Beaverton, Oregon National Wetlands Inventory map. 1:58,000 CIR, 8/81. USGS. 1961,photorevised 1984. Beaverton, Oregon 7.5' topographic quadrangle. G:\1998\98073\98073a\tigard library wetland memo.wpd Fishman Environmental Services, LLC Project 98073A Tigard Library Site Wetland Determination Page 5 , i k 4.0':- p 13'.-P-:0-716 :. i`c -1,0----' T= —,gj; 1 811111$41114111:11015 keitit4.441 — '\ \ IP.• i v .,•.n ` •� 1 ` I 4/1/ 110 :1, t� .4t, azo i 1 .b _ , r(74-" 1— �', \ \,faikAittajw.' .-.9 .iN Za,. 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Environmental Services, LLC SITE LOCATION MAP Source:USGS Beaverton,Oregon Topographic CONSULTANTS IN ECOLOGY AND Quadrangle, 1961,photorevised 1984. NATURAL RESOURCE MANAGEMENT Figure# 1 'September 2001'Project#98073a / \\,„a''''. r-- i 4 C , m V ,AillIllIl N.‘„%, '- - - - tt AFL w��Slut) ArtZ BauDP .y D a , f I f ST \ l f 1 Tit 2.00 __JAW a, O I 141 1 a a I 1 LEGEND I.� o Proposed Tigard Liby Site Scale 0 /I�_ Fishman Wetland Determination Unknown ° ° q�t Em Servnvironices,LLC STUDY AREA BOUNDARY CONSULTANTS IN ECOLOGY AND Source:City of Tigard. NATURAL RESOURCE MANAGEMENT Figure#2 'September 2001'Project#98073a . ., -____1,-.--7 --; •. • - r ':2-': ,',‘ .. - q-''..r.7- 7 '- :: .g.-;'-. :':i!Iir 1 - •! .__: il _ IV 1, __ i_ji_j __... .,______1211:12,:, •,,..1 •,. „;__,....; _ • ‘,.. pdora..r...4...„,\,74K--„,---,- (7.f. 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'kir b"-,tr. ,----„v- i.-e:1"-wo tA,I:'-f,"'"'-'',!•';', ''''k,• ' I 43, 1,;:i...41,74,,..sit- .„.,,k,4't::.r-i'It•A'iilz:r!,,r':r:_V', i (15, •!-. c 4*1 11.11 .i)..k-j.:4-'"*:1-°*:;/ '14/11, .4e: '''' .4'''-'1 i:13-te;,/,‘ ''', -ii.,/,A04:5„'"ki-itloic-Lrk,,,,;-qq7.,,,I,..,"•1,W;„.. loi ....... .v .%.`4*-4111' 14-4 .4,t,..14-:.,•;,,,rts.....,, t--,,.„01,11.4•31-•,-,- .. ,,,t-,,,t ti; isk, '.i[4,-Atri .".t.--!. t44 ' L . ..1--- I E 1 in ci1,667feet LEGEND Ng30-McBee silty claXloT (hYan.cCove proposed TigardLibrarysite8wapato inclusions) 0 00 .42- FishmanWetlandDeterminatin37D-Quatama loam . 1 ‘ Environmental42-Verboort silty clay loam 1Servlce,, TrC SOILSURVYMAP So .uSDAsCSS°ilSfWsinC4C°NSU-TANTSINECOLOGYAOregon,sheet 44,1982. e ah - c NATURAL RESOURCE MANAGEMENT Figure#4 September2001 IFM-ect#98073a • ,,.,,_,...,.....__ I I 6 ;'-' I V.,"1.::::17:;:"?.:-:;: ',.1.: -,\NZA.\ , ___,I ...iiill!„,a- .;:, ,,,,,•,::.:-:!.;:s›...--\ \ , --) . / /‘*ftlummiRS'i ' S-.:1-4:1, ' 1 ),...f".--/e1; .1( N..\ 1 r '. 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I - ( • 4,:z1m4ftil !Ito&..i .ipl.„.,,._._ t i . 1 vile.lso,,,„Emort,i.: A., ...1.-tn 1 ' Alt our!if ti irjr liltz - 111 /./ :,--dify.44 vt,..„....„,,,„,,if,, .,„,,,yr,,,,,,,„,:„„„,,,,,,,„, , ,,,,, ,_„ ..:,,,,,.:,_,„:„,„,„,,,,...„„:„:, • \ _ _ ...„,,,,rimpif,.---- . -7,,,,,,‘ , , .. , ,.„-_-_ .01,1P,!'w----:",,,,,,, i , O, „-,-„,,,,,,,,,,:,,,,,,„, / ,,, _,,..„?' ,„\N„,„‘ \ t " ,, pie - ' ,-. lio-• .., Nor - - eflut--Lmh ‘40) , _ I , . .iilik Iikiii ------------tk/* , ),,,,\-----\\ ,, # 4131 '-* ' #''' - -. 41 -1-L-1:" l" ( /pa , 1 .-- 1-1---"_ , 1 , , - "*411 'Y \''\,,,d4pur '' ---7- - \ \ ' -114.1111114 1 i se .46,..._ A / ,, & 1. -\\ wiliN ' s °� c Neig `PP a r-- �- ,�, 't -**Weiresill'".- 1. 1‘,s‘ ) , -\\ .\/7 \ \ JIMIllgi liPsilfik j ''ess..,. a ' ! b*t.j.1.A,01NBLSIbIPwI,N20-44c.1.,1.4:0-Ii‘‘ \\\Vi `� ,` _ r)iiifi :riga.o_1.i?1t 1� f rl tt 1 AZ4I1:i,11i,rdeI mlli--)lmi„ ikg irli 1 E ailk tf 4f. (/ iti. l , r--- ---- sir , . V t(--) � . :IL fi...,....31. t ,i -,,,,, , .itrail . 9414 , ' lir ! C-I. r MI i Ill ____ trk I( 4-0T-# .k i t 1 m i..�.� it ' /� �� Iwo , M-r i -,1 ., ' , L ., i� 'C — r 'i ', . Qa,e ;0?-5"a41° iu• '� ;f ,, .—/"' En -e- rike'Or/ ( 1 MINE =M 11 1 inch=200 feet LEGEND T. O "-= 100-year floodplain o Proposed Tigard Library Site et 4---., Fishman Wetland Determination Environmental Note:Wetland boundary transposed from City of j ..."-) services, Tigard survey.Sample plot locations approximate. `� LLC WETLAND MAP&SAMPLE PLOT LOCATIONS CONSULTANTS IN ECOLOGY AND Source:City of Tigard aerial topography base map. NATURAL RESOURCE MANAGEMENT _ Figure#5 I September 2001'Project#98073a ATTACHMENT A CITY OF TIGARD LOCAL WETLANDS INVENTORY CITY OF TIGARD c �, I I I �// I \ \ -1---.7l_1- Wetlands Inventory y �, .y 1 �f �I .� ,: Unit 7 wk ;, / :�. 4. '--- /i s Identified Wetlands c4°'' 1V-0 ,' /''' - N S If ' . _ �� 1€•31 / I ---------- Streams l ! l / 13134 Public Land Survey , / ' j' I /�i a 3 Section IDs �� `L n j, ,7/ ---- --�i ,�/ t t,, S J,, „ � - �� Resource Unit Boundary j 4 - ,rte ? rS"-A r „ i: .' ,e» C i� / _..I_7111-1117-_-13A Sample Plot Location y, ,,, />c/;.•I, '/!•o1,0'.."-,,,` , ‘ ,,, i� fi4, Source: Scientific Resources Inc. and i ' r x� 1 r �� Fishman Environmental Services. Aerial --",%"\\\‘ Y \ y` "_a 1 ,' t photography from April, 1994 at a \ ,t nominal scale of 1 400'. •3 � ( ) _fj: q�„ •' i Information on this map is of a 8 ,--)1,,,,--4' �' ��1� �` I ■ eneralized nature. In all cases actual j I , � \// - boundaries• ions determine wetland t 1 r �)� field Condit' __ —El Jr L;' j� ">- -`I ��_ -/- I :5 � _ ���_l_ I�� Public Land Survey Information: All 1 Mil public land survey sections depicted on l 1 I . 1' ti I this map survey are within either 1«< f._.__ _ �a, L T1SR1W or T2SR1W. I \ ‘,40,.\'`/45,0-.) J_—— �, ,, i-- j--, �^^`. {w\+ - _Rm_ L Index Map f= a r ,. 4,1 ,NIcs,,,,,,i_ , \ ' `li 1 I �fq IIIC_ 1.[ i L - ,,,4,:, flll09F. 1 11 2 -\ I_ _ :1 )a * aI L ((I L [LII V 1s 1 STI r 1 V I i:I-. _. I ,) LI I I I I III /, -[ f I mm , 7 1)� �' '�� 0.,..::1111111141:vitaillill....,0;!11.1"H‘riti,"‘"r it/)Il , -_ 'r, -,L+ Itti:1171Eri L [ t ��/if}- ; -LTC--t? • -"°1110,-iffkl 1007•11,100./ ___ I , I CIL�11L. 11 _ tilt d ~� • Ap " II ' I i Tt I , iv iCi _ _�c 1 1 Idz ;7 i j-J J1)-i .rrrIZIF I �, TSII_ rti S ( - - -- --- I� r'`i i. ;girtI ;IjI .� � F � r°7_ 1'i1�`Y�I� IIII. I: --- I ,i I rti iii J - � ^ DIM nnta•0O/71i0a scail 1°=7nn feet Q Tigard Wetlands Inventory and Assessment November 1995 Unit 7 Middle Fanno Creek Unit 7, Middle Fanno Creek, includes the mainstem of Fanno Creek from S.W. Main St. (south of Highway 99W) southeast to S.W. Bonita Rd., two minor tributaries (E7,8, E17, E37, E38), and the mouth of Red Rock Creek south of the Southern Pacific Railroad line. Unit 7 contains approximately 54 acres of wetlands including 29 acres of forest, 21 acres of emergent, 1 acre of scrub-shrub, and 4 acres of open water. The width of the wetland corridor adjacent to Fanno Creek is approximately 400 feet. The tributary is a narrow wetland corridor approximately 10 to 25 feet wide. The northern third of Unit 7, west of Hall Blvd., is within the greenway of Fanno Creek Park with safe access and a paved trail system. Fanno Creek Park wetlands (E6, E9-13) separate commercial and industrial land uses on the north from residential land use south of the park. East of Hall Blvd., Fanno Creek generally travels through residential and agricultural lands. Agricultural land on the south end of the unit north of Bonita Rd. is being replaced by commercial development. E22 has been filled since the 1989 inventory. Unit 7 provides all 7 wetland functions evaluated for this project and was rated the highest for overall wetland functional values in the City of Tigard with Unit 9 (Tualatin River). The high rating of the wetlands was due to their large size, large adjacent undeveloped uplands, and public access and trail systems (Fanno Creek Park). Fanno Creek Park (E9-13) contains diverse wildlife habitat and access for recreation. Wildlife habitat also occurs in the middle of the unit east of Hall Blvd. and Fanno Creek where expansive uplands occur adjacent to the creek. The uplands include a large pasture and a large diverse mixed deciduous/coniferous woodland with two seasonal streams flowing through it. These large adjacent uplands increase wildlife habitat and aesthetic quality values of sites E14-16 and E18-21. Fishman Environmental Services page 33 Oregon Method Summary Sheet Unit 7 Middle Fanno Creek and 2 Minor Tributaries Function Evaluation Description Rationale Wildlife habitat A Permanent water,diverse habitat&structure, connectivity,interspersion. Fish habitat A Fanno Creek provides fishery; Water quality A Stream corridor with FO(53%),EM(40%),and OW (6%);contiguous wetlands trap sediments&nutrients. Hydrologic control A Stream corridor provides runoff and flood storage opportunities. Sensitivity to impact B Potentially sensitive Enhancement potential A Soil compacted by horses/cattle in places;wetlands connected by stream. Education A Public access in Fanno Creek Park;safe access. Recreation A Developed trails and access at Fanno Creek Park. Aesthetic quality A Stream corridor with limited noise and garbage. Characteristic Description Physical characteristics of gently sloping topography with approximately 400'wide wetland corridor;includes watershed or basin 29 acres FO,21 acres EM, 1 acre SS,and 4 acres open water. Biological information provides diverse wildlife habitat with large adjacent undeveloped uplands(E14-16, E18-21). Water quality Fanno Creek has been rated severe WQ condition by DEQ(1988);degraded due to runoff from agricultural lands and commercial,industrial,and residential stormwater. Land use existing land uses within 500'of wetland edge include 30%residential,25%open space,22.5%commercial/industrial,and 22.5%agricultural. Fishman Environmental Services page 34 Tigard Local Wetland Inventory - Offsite Option WETLAND SUMMARY SHEET UNIT: 7 WETLAND: E 14-16, 18-21, 39 Wetland Acreage: 25 Field Date: 9/13/94 (.19 ac PFO/0.25 ac PSS/4 ac PEM/2 ac POW) Location: Fanno Ck E of SW Hall & N of Colony Ct Beaverton Quadrangle T2S R1W Sec. 1,2 Tax Map: 25102 DA, DD & 25112 BA, BB Aerial: NE (E-20, E-20, 21) & SE Zoning: R-4.5, I-L, R-12, R-7, Greenway NWI Classification: POW, PEM, PSS, PFO WWHA Score: 80 Mapped Soils: non-hydric, 42 Verboort SiCL, 13 Cove SiCL, 22 Huberly SiL Hydrologic Basin: Fanno Sub-basin: Fanno Creek Hydrologic Source/Comments: Fanno Creek; perennial stream. Dominant Vegetation: Trees Shrubs Herbs/Emergents Fraxinus latifolia (Rubus discolor) Phalaris arundinacea Alnus rubra Crataegus douglasii Juncus effusus Salix lasiandra Spiraea douglasii Boundary Information: distinct topographic break; vegetation changes to Himalayan blackberry and pasture grasses. Buffer Information: Standard 25 ft minimum. Comments: Fanno Creek, perennial stream with areas of broad adjacent wetlands including forest, emergent and small pondings. Excellent wildlife habitat with diverse vegetation. Interspersion with stream and upland coniferous woodland. An additional wetland (E-39) between RXR tracks E of E-21 consists of ash/willow/blackcottonwood and seasonal pond. Steep channel banks vegetated with Himalayan blackberry and diverse forest cover. Fishman Environmental Services ATTACHMENT B WETLAND DETERMINATION DATA SHEETS WETLAND DETERMINATION DATA SHEET- 1987 MANUAL Project#1,e673aSite:rteGvjibr County:Loa SJin94 State: OR Date://l3/lel Plot: .1 Applicant/Owner:G' 61 Ti 01 cz} Sect.(I/4) I .SCJ Township a S Range I Lv Wet /� Plot Location:S�r,ril-e-r'npnoSi- f c 4-cn oI ft-(.J(c e `�r eer 5 . 41-, M tc 4tp d Topographic Location: f I z4- eaS-Ir_aee, 9 rao1U a I Sloe Actor +-o e�Sl- V Do normal environmental conditions exist?QY N Explain: P Are soils vegetation hydrology significantly disturbed?Explain: VEGETATION *Dominant Plant Species %Cover Ind. *Dominant Plant Species % Cover Ind. Herb Stratum(%total cover:) ) (5 ft. radius) Shrub/Sapling Stratum(% total cover: ) (10' rad.) ()�e.sk a arur-inacea 60 FAG - 1. DA cropLian ('e pe-5 -v FAG- 2. 0Aoiros .3 ' ao pr&i,FAC 3. 4.Tf(Tolit re 2. +r — 4. 5C-it-Sala 0, Oul9.(e. 4( 61( 1 5. 6.Son c/1“50)5e +(--' Tree Stratum (% total cover: ----- ) (30 ft. radius) 7. 1. 8. 2. 9. 3 Remarks: L9C+a4-tcrl 09raze 3 br./ horse S Percent of Dominant Species that are OBL, FAC or FAC (excluding FAC-): '/3 = 33' Hydrophytic Vegetation Criterion Met? YES (�O) NWI Class SOILS /' Mapped unit name: LID - L erbOc41- SO C laC/i Matches Profile? Y Taxonomy: 7(.p,C. Aron i a 1 b0115 Drainage Class: pooribi Depth Horizon Matrix Color, Mottle Abund., Size, Color, on Pores/Peds? Texture, Struct., Other � - S5Mcas of , i hIOYR 3/3moi3 - l. C k ?i2 y/6 Ma4.5 SiL 2.61' 4 r -SNer yam) SIL Histosol Reducing Conditions(test) Hi. Organic Cont. Surf. Layer Histic Epipedon Gleyed Organic Streaking Sulfidic Odor Mottled (w/i 10") Organic Pan Prob. Aquic Moisture Regime Concretions (w/i 3",>2mm) On Hydric Soils List Remarks: .50i l S ( j Art/ 1-Awa 46 clip/; no o1C / Hydric Soil Criterion/Indicators Met? YES C �:� Db5.1-h6(12 6 (014-er ( W oil/11s Ink 20'30 «. HYDROLOGY 177 picicc9c .e/V Depth of inundation: Depth to free water: Depth to saturation: seeps: 1° Indicators 2° Indicators 2° Indicators Inundated Oxidized Root Channels in upper 12" Local Soil Survey Data Saturated in upper 12" Water-stained leaves FAC-Neutral Test Water Marks Recorded Data Available (aerials, gauge)? Explain: Drift Lines Other: Sediment Deposits Remarks: Spi 1s berz.iAR/ Drainage Patterns Wetland Hydrology Criterion/Indicators Met? YES NO DETERMINATION: Is this plot a Wetland? YES �t0) Comments: r+A A ! Determined by:'- vl VJtJ) � ( 4 S}act 1 —.,in Fishman Environmental Services rev 4/00 WETLAND DETERMINATION DATA SHEET- 1987 MANUAL , Project#1$073aSite:r e .) lihraczi CountyL� S�inC cn State:UQ Date:e LVo) Plot: Applicant/Owner: Gi'L. T . _ - Sect.(1/4) 1 5&) Township aS Range ) (CD/ Up Plot Location: (ve5 - o Plan_Macler3 pal f/- J Topographic Location: cAa-Gtal S e � 40 perNcl. +0 eaS-+- (JJ/ Do normal environmentalconditions exist?WN Explain: ',, . ' s. /' to A Jt_ 0.101‘.4 Are soils vegetation hydrology significantly disturbed? Explai : VEGETATION • *Dominant Plant Species % Cover Ind. *Dominant Plant Species % Cover Ind. Herb Stratum(%total cover: 95 ) (5 ft. radius) Shrub/Sapling Stratum(%total cover: _5 ) (10' rad.) OpPhadari• arunc:Vinac.ea 90 FAC() i.Puhus ci.Scalar -5 EACLA reurnSa1ic.ari a 5 F�4Ctoi- 2.Sola-,ca."-. At.�)ca�,wrc +C FMC �rtcl�lu S S +r ..E .v 3. PoSa Sp.. +( FAG x n Pers t c ria FACL )4. 5. 5. 6. Tree Stratum (%total cover: — ) (30 ft. radius) 7. 1. 8. 2. 9. 3. Remarks: Percent of Dominant Species that are OBL FACW, or FAC (excluding FAC-): lY/ = JOD% Hydrophytic Vegetation Criterion Met? 'E-S) NO NWI Class PEM SOILS Mapped unit name:3 7.13 —Q L4 a-1-ar-a I Oar y, Matches Profile? Y Taxonomy: Age., t Ila ]vxera VS Drainage Class:Mc ►�eraflel /i-'e f Depth Horizon Matrix Color Mottle Abund., Size, Color, on Pores/Peds? Texture, Struct., Other OA ]U YR /1 aro it-ir'uAG.ie if- 3. 1, G 3/I /ew,pile ]b9R 11/(, Sid_ Histosol Reducing Conditions (test) Hi. Organic Cont. Surf. Layer Histic Epipedon Gleyed Organic Streaking Sulfidic Odor Mottled (w/i 10") Organic Pan Prob. Aquic Moisture Regime Concretions (w/i 3", >2mm) On Hydric Soils List Remarks: 50(1.5 protc. e no ' _ . E'acs� 4 (, f-lam Hydric Soil Criterion/Indicators Met? NO HYDROLOGY Depth of inundation: Depth to free water: Depth to saturation:•SL+(/a ce- seeps: 1° Indicators 2° Indicators 2° Indicators Inundated Oxidized Root Channels in upper 12" Local Soil Survey Data XSaturated in upper 12" Water-stained leaves FAC-Neutral Test Water Marks Recorded Data Available (aerials, gauge)?Explain: Drift Lines Other: Sediment Deposits Remarks: Drainage Patterns Wetland Hydrology Criterion/Indicators Met? CE-9 NO DETERMINATION: Is this plot a Wetland? ES NO f Comments: &I .SEAS Determined byC,MA>b 4 S+aCCI BerlSaminBe Fishman Environmental Services rev A/00 WETLAND DETERMINATION DATA SHEET- 1987 MANUAL Project#:*8v}14ite:r ew)ibrarzi County:Lca$kinai}al State:02 Date 9f 316) Plot: 3 Applicant/Owner: C1' of T1'o�a� rm Sect.(1/4) I SL.) Townshipcl S Range Jt) L U Wet ) Plot Location: A) 15 4- ncr44-' of poi, D Topographic Location: S)1• h4-lci ki. her 4/1-1 -N ly+ a Do normal environmental conditions exist?6 N Explain: Are soils vegetation hydrology significantly disturbed?Q Explain: VEGETATION *Dominant Plant Species % Cover Ind. *Dominant Plant Species % Cover Ind. Herb Stratum(%total cover: 10 ) (5 ft. radius) Shrub/Sapling Stratum (%total cover:7-5 ) (10' rad.) d Ac roS-1'S 59. 0 Q _ -. aa. , . , - C FAC-1.44- )Fe S4-uCa arut,AinaGed a5 FAC- 2. Pc-iblA.s c1.i 5Golor 1 D 3. 14e4Aera k IiX 3 £.APL 3. I)ex U i.(o1i1,1c- 5 U PL, 4• 4.{( JUS Cofnu-i-a -I< FPC(i 5. 5. oSa S . ps b (=AG 6. Tree Stratum (%total cover: ) (30 ft. radius) 7. 1. 8. 2. 9. 3. Remarks: Percent of Dominant Species that are OBL, FACW or FAC (excluding FAC-): 1/3 = 33°70 Hydrophytic Vegetation Criterion Met? YES 10 NWI Class SOILS Mapped unit name:,34 (3-Qua-Parra loan, Matches Profile?c N Taxonomy: Aq(4(AJ-1.f C. Japl oXera1fs Drainage Class:I'''locksa4e.iy CA-ren J Depth Horizon Matrix Color Mottle Abund., Size, Color, on Pores/Peds? Texture, Struct., Other d—11 02 3/3(mois;) no r eAo)c Sit Histosol Reducing Conditions (test) Hi. Organic Cont. Surf. Layer Histic Epipedon Gleyed Organic Streaking Sulfidic Odor Mottled (w/i 10") _Organic Pan Prob. Aquic Moisture RegimeConcretions(w/i 3", >2mm) On Hydric Soils List S Remarks: oit3 Art/.J- �e . 4-o cl1'd3 Hydric Soil Criterion/Indicators Met? YES 4 HYDROLOGY Depth of inundation: Depth to free water: Depth to saturation: seeps: -- 1° Indicators 2° Indicators 2° Indicators Inundated Oxidized Root Channels in upper 12" Local Soil Survey Data Saturated in upper 12" Water-stained leaves FAC-Neutral Test Water Marks Recorded Data Available (aerials, gauge)?Explain: Drift Lines Other: Sediment Deposits Remarks: —5005 Ol Drainage Patterns Wetland Hydrology Criterion` /Indicators Met? YES (N O DETERMINATION: Is this plot a Wetland? YES 10) Comments: Determined by( ,k4 4-S+-acC1 *h,0Fishman Environmental Services rev 4/00 ATTACHMENT C VEGETATED CORRIDOR CONDITION ASSESSMENT DATA SHEETS Vegetated Corridor Condition Assessment for Clean Water Services Natural Resource Assessments Page 1 of 3 Site: City of Tigard potential library site Investigators: Mirth Walker& Stacy Benjamin Date: 9/13/01 Community # 1 = 12 - 15 foot tall steep slope south of Fanno Creek %of Corridor XX% Plot# 1 Tree Species, % Cover,Native,Invasive or Noxious; 30-foot radius: black locust(Robinia pseudoacacia), non-native, 10% Shrub Species, % Cover,Native,Invasive or Noxious; 30-foot radius: Himalayan blackberry (Rubus discolor), invasive, 20% bittersweet nightshade(Solanum dulcamara), invasive, 10% Herb Species, % Cover, Native,Invasive or Noxious; 10-foot radius: hedge bindweed(Convolvulus [Calystegia]sepium), non-native, 10% poison hemlock(Conium maculatum), noxious, 10% Canada thistle (Cirsium arvense), noxious, 5% reed canarygrass(Phalaris arundinacea), invasive, 5% campion(Silene species), non-native(?), 5% birdsfoot-trefoil(Lotus corniculatus), non-native, trace common velvetgrass (Holcus lanatus), non-native,trace Remainder of slope is rip rap or bare, eroding soil % Cover by Natives: None % Tree Canopy: 10% % Invasive/Noxious: 50% Corridor Condition(if only 1 plot; otherwise average plots for each community): Degraded Fishman Environmental Services, LLC G:\1998\98073\98073a\VCCA_form.wpd Vegetated Corridor Condition Assessment for Clean Water Services Natural Resource Assessments Page 2 of 3 Site: City of Tigard potential library site Investigators: Mirth Walker& Stacy Benjamin Date: 9/13/01 Community #2=pasture at top of slope, south of Fanno Creek %of Corridor XX% Plot# 2 Tree Species, % Cover,Native,Invasive or Noxious; 30-foot radius: None Shrub Species, % Cover,Native,Invasive or Noxious; 30-foot radius: black hawthorn(Crataegus douglasii), native, 5% beaked hazelnut(Corylus cornuta),native, 5% snowberry(Symphoricarpos albus),native, 5% Herb Species, % Cover,Native,Invasive or Noxious; 10-foot radius: tall fescue(Festuca arundinacea),non-native, 70% bentgrass (Agrostis species, -),probably non-native, 30% And likely other grasses such as quack grass(Agropyron [[Elytrigia]] repens), noxious % Cover by Natives: 15% % Tree Canopy: None % Invasive/Noxious: None Corridor Condition(if only 1 plot; otherwise average plots for each community): Degraded Fishman Environmental Services, LLC G:\1998\98073\98073a\VCCA_form.wpd Vegetated Corridor Condition Assessment for Clean Water Services Natural Resource Assessments Page 3 of 3 Site: City of Tigard potential library site Investigators: Mirth Walker& Stacy Benjamin Date: 9/13/01 Community#2 =pasture north of wetland in south portion of site %of Corridor XX% Plot# 3 Tree Species, % Cover,Native, Invasive or Noxious; 30-foot radius: None Shrub Species, % Cover,Native,Invasive or Noxious; 30-foot radius: ornamental hawthorn(Crataegus monogyna), non-native, 60% Himalayan blackberry(Rubus discolor), invasive, 10% English holly (Ilex aquifolium), non-native, 5% beaked hazelnut(Corylus cornuta), native, trace rose(Rosa species), native,trace Herb Species, %o Cover,Native,Invasive or Noxious; 10-foot radius: bentgrass(Agrostis species, -),probably non-native, 40% tall fescue(Festuca arundinacea), non-native, 25% English ivy (Hedera helix), invasive, 5% % Cover by Natives: Trace % Tree Canopy: None % Invasive/Noxious: 15% Corridor Condition(if only 1 plot; otherwise average plots for each community): Degraded • Fishman Environmental Services, LLC G:\1998\98073\98073a\VCCA_form.wpd a ATTACHMENT D PURPLE LOOSESTRIFE INFORMATION I caluics 01 LAIC VV CC& .. 1 lallw .. 1 ul}JIG LuU c u IIc ♦ub. ♦ va c Home I Careers I Contact Us I Site Map k" t '' ''' -' ' i'' ' -Iom.. .. ate. ,.� .. Com' •Became a Member Y ., too ,, �c Vv,:'''-- ''' •MemberhiaRenel'. .1•,:',,,,',,,6A-mrlc ar s_ •Make a Donation Visit a Place Near You: Where We Work 1r_ Purple loosestrife Search: (mss) I I Name r Purple loosestrife Plants Lythrum sal/car/a - , Range Features of the Week Purple loosestrife is an invasive species in North . , Place America that originates from the temperate regions of ; Europe and Asia where it is generally a minor Plant ,„..,::.,,,,- component of wetland communities. It is believed that ', it was introduced to northeastern North America in the -0 Animal ,,. 1800s, although no one knows exactly how. It ,,,,,,,,,,,:v4 currently occurs in most states throughout the U.S. "� and all Canadian provinces except the Yukon and the ft. Northwest Territories, although infestations are heaviest in the northeastern United States and ��� southern Canada. �' Habitat . + Purple loosestrife is found in various types of wetlands. Rivers, streams and lakeshores are all common habitat, as well as ditches and otherk #:.. disturbed wet areas. ',,•, Key Facts • Purple loosestrife is a beautiful menace, with brilliant magenta flowers appearing between July and September. • A single purple loosestrife plant can produce up to 2.5 million seeds annually. • A single purple loosestrife root system can have 30 to 50 stems rising from it. • Loosestrife's tiny, light seeds may remain viable for several years in water or soil, and can be distributed long distances by animals, wind and water. • The seeds can germinate in acidic, alkaline, nutrient-rich or nutrient-poor soils, and have minimal light requirements. • Purple loosestrife is extremely successful in disturbed or degraded wetlands. Threats http://nature.org/features/plants/art2743.html 9/19/01 1 SrULUI\.J Vl LIIV YY VNl1 .. 1 1Ul1L0 .. 1 Ul}llb LVVJVJLL 11V 1 UG.V 4 Lit A. 0 Purple loosestrife is an invasive plant in the wetlands of North America and will crowd or shade out native grasses, sedges and other plants, eventually establishing single-species stands. In its invasive range, it is not desirable to wildlife as habitat or food, and does make for decent spawning habitat. It has been known to drive out some federally endangered orchids and adversely impact waterfowl. Conservation Status Purple loosestrife is extremely difficult to eradicate. Pulling the weed by hand or applying herbicide is effective for small patches but unfeasible for large areas, and experiments with burning and changing the area water level have been relatively unsuccessful. Biocontrol, or the introduction of another nonnative species to control the first, may be the only answer to eradicating large stands—although many argue against this method. The United States and Canada have both approved several species of beetles for use in the biocontrol of purple loosestrife. Also, many states have legislation against the selling and planting of purple loosestrife to curb its use in landscape plantings and flower gardens. Conservancy Protection The Nature Conservancy is finding ways to deal with purple loosestrife at a number of sites across North America. At Niobrara Valley.Preserve—one of the premiere biological reserves in the Great Plains—stewards are using the approved beetles to eradicate stands of this noxious weed. For more information, please visit: Dakotas, Idaho, New York, or Wisconsin. To volunteer to help control purple loosestrife at an invasive plant project in New York, please visit the Adirondack Chapter. Privacy StatementFinancial Information I Legal Disclosure Copyright©2001 The Nature Conservancy http://nature.org/features/plants/art2743.html 9/19/01 Features of the Week::Plants::Purple Loosestrife Page 1 of 2 Home I Careers I Co F¢ Features of the Week Meter.. efelatt Visit a Place Near You: Where We Work Purple loosestrife Search:(Tim) Name Purple loosestrife Plants Lythrum salicaria ;ga Features of the Week Range Place Purple loosestrife is an invasive sp cies in North erica that originates from the t- perate regions Plant of ' rope and Asia where it is ge erally a minor Animal corn.anent of wetland communities. It is believed that it as introduced to northea-tern North America , in the 800s, although no one ows exactly how. It current occurs in most states hroughout the U.S. and all 6-nadian provinces e -pt the Yukon and the North est Territories, alt ough infestations are heaviest i the northeastern nited States and southern C- ada. k � Habitat Purple loosestr e is four'', in various types of wetlands. Rivers, strea and lakeshores are all common habitat, - wel as ditches and other disturbed wet areas. Key Facts • Purple loose- ri _ is a beautiful menace, with brilliant magenta fiowe between Jul and eptember. • A single pu .le loo -strife plant can produce up to 2.5 million seeds • A single p •le loos trife root system can have 30 to 50 stems risin • Loosestrif,'s tiny, ligh seeds may remain viable for several years in and can .e distributed *rig distances by animals,wind and water. • The see•s can germinat. in acidic, alkaline, nutrient-rich or nutrient- have mi imal light require, ents. • Purple sosestrife is extre -ly successful in disturbed or degraded v Threats Purple loos=strife is an invasive plant 'n the wetlands of North America and shade out =tive grasses, sedges and .they plants, eventually establishing stands. In i s invasive range, it is not de irable to wildlife as habitat or food, for decent -pawning habitat. It has been nown to drive out some federally orchids a • adversely impact waterfowl. Conservation Status Purple loosestrife is extremely difficult to eradr, -te. Pulling the weed by har herbicide is effective for small patches but unfe- ible for large areas, and E burning and changing the area water level have been relatively unsuccessf the introduction of another nonnative species to control the first, may be the eradicating large stands—although many argue against this method. The and Canada have both approved several species of beetles for use in the k http://nature.org/features/plants/art2743.html 9/19/01