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DSL/Wetlands rhumb 91 1§‘Sc\ -.1‘11 \\ KT.JRAI-IA ST-IIJ°L fir' ASSOC[Ari , INC_ QTY UFSICA TtGA�0 July 1, 2004 Ms. Kim Mc Millan PE Development Review Engineer —City of Tigard - 13125 SW Hall Blvd. Tigard, Oregon 97223 Re: (2100)Wetland planting progress status Dear Kim, This letter is to confirm that the Planting for the wetland,under DSL Permit 30238-RF, for the Tigard Library has been installed as approved by DSL and the Corps of Engineers. Please feel free to contact us if you require any further information. Sincerely, .r%Gregory Kurahashi PE 1Q.053 Kurahashi and Associates Inc , GTK/hj IPy 1NRN W:\2100\Docs\correspondence\McMillan-COP re plantings status completed.doc 15580 SW Jay Street,Suite 200;Beaverton,Oregon 97006 Phone:(503)644-6842;Fax:(503)644-9731 08/07/2003 22:56 NO.678 P01 ., �i (?rte �'1'''''.-011�; Dep nen �f Environmental Quali '� repo 811 SW Sixth Avenue - 7heod.ore R.Kulongoskd,Governor % 1 Portland,OR 97204 1390 �` '` - 3 503.229-5696 I Y 503-229-6993 Au ust s, Zoos T. .i. a�� ° �� goo 0 August �,P¢ Ms. Kathryn Hams L� t Ur. 1, U.S. Army Corps of Engineers ATTN: CENPP-CO-GP P.O. Box 2946 Portland, OR 97208-2946 • Dear Ms. Harris: The Department of Environmental Quality(DEQ) has reviewed the U.S. Army Corps of Engineers (USACE) provisional Nationwide Permit (NWP) application#2003-00241 [Division of State Lands (DSL) #30238-RF]. The applicant, City of Tigard, proposes to construct a stormwater outfall in conjunction with work on the Tigard Library. The.project is located in Tigard, Washington County, Oregon (Section 2, T1S/R1W). The USACE has determined that this action is authorized under the terms and limitations of NWP Number 43. Section 401 Water Quality Certification has not been issued for NWP Number 43. Based on information provided by the applicant, DEQ does not anticipate any violations of State Water Quality Standards, including Oregon Administrative Rule (OAR) 340-041-0026 (1)(a), Antidegradation Policy for Surface Waters, provided the conditions which follow are incorporated into the permit. 1) Fish protection/ODFW timing: All in-water work shall occur within the Oregon Department of Fish and Wildlife's (ODFW) preferred time window, as specified in: Oregon Guidelines for Timing of In-Water Work to Protect Fish and Wildlife Resources, June 2000. Exceptions to the in-water work timing guidelines must be reviewed and approved by DSL and ODFW. 2) Aquatic life movements: No activity may substantially disrupt the movement of those species of aquatic life indigenous to the water body, including those species that normally migrate through the area. Unobstructed fish passage must be provided at all times during any authorized activity. 3) Turbidity/erosion controls: The authorized work shall not cause turbidity of affected waters to exceed 10% over natural background turbidity 100 feet downstream of the fill point. For projects proposed in areas with no discernible gradient break (gradient of 2% or less), monitoring shall take place at 4 hour intervals and the turbidity standard may be exceeded for a maximum of one monitoring interval per 24 hour work period provided all practicable control measures have been implemented. This turbidity standard exceedance interval applies only to coastal lowlands, floodplains, and valley bottoms. For projects in all other areas, the turbidity standard can be exceeded for a maximum of 2 hours (limited duration) provided all practicable erosion control measures have been implemented. These projects may also be subject to additional reporting requirements. I 08/07/2003 22:56 NO.678 P02 Kathryn Harris Page 2 Turbidity shall be monitored during active in-water work periods. Monitoring points shall be an undisturbed site (representative background) 100 feet upstream from turbidity causing activity (i.e., fill or discharge point), 100 feet downstream from the fill point, and at the point of fill. A turbidimeter is recommended, however, visual gauging is acceptable. Turbidity that is visible over background is considered an exceedance of the standard. Practicable erosion control measures which shall be implemented, as appropriate, include but are not limited to the following: a) Place fill in the water using methods that avoid disturbance to the maximum practicable extent(e.g. placing fill with a machine rather than end-dumping from a truck); b) Prevent all construction materials and debris from entering waterway; c) • Use filter bags, sediment fences, sediment traps or catch basins, silt curtains, leave strips or berms, Jersey barriers, or other measures sufficient to prevent movement of soil; d) Use impervious materials to cover stockpiles when unattended or during rain event; e) Erosion control measures shall be inspected and maintained daily, to ensure their continued effectiveness; f) • No heavy machinery in a wetland or other waterway; g) Use a gravel staging area and construction access; h) Fence off planted areas to protect from disturbance and/or erosion; and i) Flag or fence off wetlands adjacent to the construction area. Turbidity shall be measured (or visually assessed)and recorded at the designated monitoring interval prescribed above during periods of active construction. The designated person attending the monitoring equipment shall be responsible for notifying the project foreman of any exceedance of the turbidity standard. If a 10% exceedance of the background level occurs at 100 feet below the project site, modify the activity causing the problem and continue to monitor at the proper interval. If exceedances occur with two consecutive measurements stop the activity causing the turbidity until the problem is resolved. 4) Deleterious waste materials: a) Petroleum products, chemicals, fresh cement, riprap grout, or other deleterious waste materials shall not be allowed to enter waters of the state; b) Use only clean fill free of waste and polluted substances to maintain water quality; C) Best Management Practices (BMPs) shall be employed in order to prevent discharges of spills to surface or ground waters. d) The applicant must remove all foreign materials, refuse, and waste from the area. 08/07/2003 22:56 NO.678 203 Kathryn Harris Page 3 5) Planting/re-vegetation: a) Plant new vegetation or replace any existing vegetation in areas that may be disturbed as a result of this project, in order to restore the function and stability of the landscape and habitat. b) Plant disturbed areas with native plants and trees in all cases except where the use of non-native plant materials may be essential for erosion control; and c) The standard for success is 80% cover for native plant species. Temporary fencing off of planted areas may be required to insure success. 6) • DEQ recommends that all storm drains be equipped with oil and grease traps, and be regularly maintained. 7) During construction activities,storm water runoff or wash water from disturbed soils, permanent impervious road surfaces, access lanes, and parking lots shall be first treated by a facility specifically designed to remove storm water contaminants before entering state waterways or wetlands, including mitigation wetlands, so as to minimize contaminants entering those water bodies. 8) Provide a buffer zone, where practicable (minimum width of 50 feet recommended) in order to protect existing riparian areas, and existing and mitigation wetlands. 9) Projects of 1 or more acres require an NPDES 1200C Storm Water Discharge Permit. Contact the appropriate DEQ regional office for more information. Projects employing sumps or dry wells for groundwater discharge must conform to OAR 340-044-050. • Contact Barbara Priest, DEQ, at 503-229-5945 for more information. 10) DEQ reserves the option to modify, amend or revoke this WQC, as necessary, in the event new information indicates that the project activities are having a significant adverse impact on State water quality or critical fish resources. 11) A copy of this Water Quality Certification (WQC)letter shall be kept on the job site and readily available for reference by the Corps of Engineers, DEQ personnel, the contractor, and other appropriate state and local government inspectors. 12) This WQC is invalid if the project is operated in a manner not consistent with the project description contained in the permit application. 13) DEQ is to have site access upon reasonable request. 14) If you are dissatisfied with the conditions contained in this certification, you may request a hearing before the Environmental Quality Commission. Such request must be made In writing to the Director of DEQ within 20 days of the mailing of this certification. You may also request written information about alternative dispute resolution services under Oregon Revised Statute 183.502, including mediation or any other collaborative problem-solving process. • 08/07/2003 22:56 NO.678 E04 Kathryn Harris Page 4 The DEQ hereby certifies that this project complies with the Clean Water Act and state water quality standards, if the above conditions are made a part of the Federal permit. The applicant shall notify the DEQ of any change in ownership, scope, or construction methods of the project subsequent to certification. If you have any questions, please contact Tom Melville at (503) 229-5845. Sincerely, Michael T. Llewelyn, Administrator Water Quality Division T:TM.Certharr.03-241 cc: Applicant Colin MacLaren, DSL Charles Bahlman From: Bruce Barton [bbarton@srgpartnership.com] Sent: Wednesday, July 23, 2003 2:43 PM To: 'Brett Arvidson' Cc: Charles Bahlman (E-mail); Dan Vanbrabant (E-mail); Dirk Koopman (E-mail) Subject: RE: Library Corps of Engineers Permit Thanks Brett - i will forward email to Hoffman. When can i expect the wetlands permit with conditions ? Bruce Original Message From: Brett Arvidson [mailto:bretta@kurahashi.com] Sent: Wednesday, July 23, 2003 12:38 PM To: Bruce Barton Subject: Library Corps of Engineers Permit Bruce The city just recieved the wetlands permit from the Corps of Engineers. I'm forwarding you a copy. It places some conditions on the construction that we need to review with the contractor before they enter the wetland areas. (most of the conditions are on the drawings) . They require a minor trench change for the sanitary pipe. We need to install a soil plug on two points in the trench alignment. All we need to do is compact some of the clayey soil from the excavation around the pipe. Please restrain the contractor from entering the wetland area till we confirm that a water quality certification was issued for the project. COE doesn't have one, but its a state permit proceedure when issueing the DSL permit. The Corps will jump on the project if that certification wasn't issued. Otherwise permits are in place. Brett 1 a�¢��,ti�T of � DEPARTMENT OF THE ARMY �` PORTLAND DISTRICT,CORPS OF ENGINEERS �� Vr 1 w -2- approximately 100 feet from the top of bank. The geotechnical blanket is needed to ensure adequate armoring of the bank for discharge events. Blackberries will be removed from the bank, the geotechnical material placed, and native herbaceous seed mix and willow stakes planted on the blanket. Since this portion of the project does not involve a discharge of fill material in wetlands or below the line of ordinary high water, a separate DA permit is not required. This letter verifies that your project is authorized under the terms and limitations of Nationwide Permit Nos. 12 (utility line activities), 14 (linear transportation projects), and 43 (stormwater management facilities). Your activities must be conducted in accordance with the conditions found in the Regional Conditions (Enclosure 2), General Conditions (Enclosure 3), and the following project specific conditions: a. Clay plugs shall be installed at both ends of the trench within the wetland boundaries to ensure that the wetland hydrology is not altered by installation of the sanitary sewer line. b. To compensate for temporary and permanent impacts, you shall complete the restoration work as shown on Figures 7-11 of Enclosure 1 and detailed in the Mitigation Special Conditions (Enclosure 4). The Oregon Department of Environmental Quality has provided their Section 401 water quality certification (WQC)for Nationwide Permit Nos. 12 and 14. The WQC contains conditions (Enclosure 5) that you must comply with as part of your Department of the Army authorization. Water quality certification has not been issued for Nationwide Permit No.43. Therefore,authorization for construction of the stormwater outfall in the wetland adjacent to Pinebrook Creek will not become valid until certification is issued. By copy of this letter, we are notifying DEQ of your proposed work and thus requesting their certification. The certification will be considered by Mr. Tom Melville, Oregon Department of Environmental Quality, 811 SW Sixth Avenue, Portland Oregon, 97204-5694. When water quality certification has been issued, you must provide this office a copy, along with the conditions of their certification. The conditions of the 401 certification are conditions of this authorization. Your activities must be conducted in accordance with those conditions as well as those conditions enclosed with this letter. Your failure to ensure compliance with any of the listed conditions could result in the Corps initiating an enforcement action. We also direct your attention to Regional Condition 1, (Enclosure 2), that requires the transfer of this permit if the property is sold and General Condition 14 that requires you to submit a signed certificate when the work is completed. A "Compliance Certification" is provided (Enclosures 6). -3- Failure to comply with any of the listed conditions could result in the Corps initiating an enforcement action. This authorization does not obviate the need to obtain other permits where required. Permits, such as those required from the Oregon Division of State Lands (ODSL) under Oregon's Removal/Fill Law,must also be obtained before work begins. This verification is valid for a period of 2 years from the date of this letter unless the nationwide permit expires, is modified, reissued, or revoked prior to that date. All the nationwide permits are scheduled to be modified, reissued or revoked in March 2007. If you commence or are under contract to commence this activity before the date the nationwide permit expires, is modified or revoked, you will have twelve months from the date of the modification or revocation to complete the activity under the present terms and conditions of the current nationwide permit. If you have any questions regarding this nationwide permit verification, please contact Ms. Kathryn L. Harris at the letterhead address or telephone (503) 808-4387. cerely, i L.' 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KNLCN A PER s?EpFlCA7KN.5 / 'Al \ ORd �/- l --, \ t' „^?-170 \ ``- \ ,., '"^ \ a�AF{ SHALL ee►1srAGLIED M I = __ 1 ./ c A -'" .„,.......I.,--01.. ... g \ bT7a s AND svEcrrAR PPrry� p� �$�7ii. ✓,'I o 0 Y` ESwy."t R11fft r T Hard Lib wy ' Site Plan g == x+aits MR I . 2 _ _ ` �E; td kor6l �' 4Q 2003 t�`gigx o R: no-4 ''l ` �- n•;, -,y / rn c/ / ; / HUNDRED YEAR ' FLOOD PLAIN ' L_ ROuti,,An'Y 4; '- �� =WETLAND AREA .\_/_3e,,:', 'i\, I4yU SDR D 7 LGOOD P •l / - TOP OF BANK / ►� dGUNDAR' / f.2' - - ci: : I,. ! / rr : t' 50 25 0 50 J ( ! � i _____._ ,,:!,44, /� ' I ` \ 1 INCH = 50 FEET i -' -- -�.,� y .y. :i j 9z 1- - - \\), \ . 4 a'Y ;I \ rte L✓ Si i i ,.8'LOCUST r .,1—.., -_-_ ./___ A',,, 1 j \ \I i f .- �. Berm_ 4, u s il --)4/ / _ - 5:1 GRADING IN BUFFER fL -`T' I ` r' \\ , - NO TREES REMOVED 'I.fr J l -�, lr; i ,,cP SEDC ' i R TOR /} \''''\ 143 �_/ TflorY e _; _ i'l S ORM' U�TFALL CROP SE ) I5'' -=f 'i • N'TO'BIJk�FERtAA,)N / SANIT ftY '� `. " WETS' D' / J \ j` / /- // �� .,' /,. "OUNDARY , .i -� / / `N� . . �/ j �. / \ Berm /"\--/---/-' Gree- �/' j • / / 1 i t „ : / //:- VW/1Y 1:', A/ y•- :._//Z/--4±-,, , / L • \ Berm ,.,,,,-,,,---,. .0.4_,. .,.•..,/ . _ j•:, /',,,,:j ,,,‘, / / ,7- / - ///,'.,,i,::::::.--.1):..._...__..,, 1:0;;:,2,-.1:::::.---e-:;:-.„6.:::),.:2„ •:: ",:, „,: ., r il 51 S l SCALE KURAHASHI Tigard LlbraTy Nan Mom /Wotland Impact & ASSOCIATES, INC. �9 O Civil Engineering •Water Resources ' SHEET aT Landscape Architecture - Planning Environmental • Surveying ��t �•��7 j�G`�{ �'^�' GKN= 15580 SW Jay Street, Suite 200 U"J�lt�ll'JJ UJB LS�'��N/ Beaverton, Oregon 97006 (503)644-6842 fax: (503)644-9731 FIG. 3 • • =PE RM?NEN T IMPACT 40 20 0 40 ./ /' =TEMPORARY IP./IPACT 1 INCH = 40 FEET ''''''1 '1 / I 1 \ I ) I 4 \ I \`28 7 oc\T _r' "'-\ v.;,' ti I _ - Ber f r'. I ,-. (ice . N - . NG SVA, Es El J I �� \ 5: 1 GRADIN SS, 46�CS1 \ GEiAT/oN fI �� ( ( \\\\., NO TREES A R I \ r \ �W Y • 7TOR� ;\ ' -'�, —____ ___-- --:.,--!..A 1 iik Ili i i 1 it 0) Air r 0 / z \ ' y `, � � �` ; STORM OUTFALL ROPIISE17 sr , 1\\ � 4,, if �� ♦ R . AND �� INTO. B`UFFE SANITA :'� � /� .� WETLAND WETLAND \ _ J ��'� � � � BOUNDARY Y ' �� is / �Ge�d.\ I/� - A I. � z4 ,. ritu - i "---------71 / vi, vr./ ,_ ._,, (--------_,L__ __________.= . . -----=-- -----' --:- . '''' ---- ~ Berm _-- �-,( ' d am \ \ L`C UST N \ \ Ø; / __�� \\\\\ '''. \ `i ' _. 0.,L O.0 UST \, �`\ \ \ ' \ \ Tigard Library SCALE KURAHAS i if o tnp o©rary and d pC�P�itlt�1(�C�f�t WC�tiant d impact I9 ; 40' 8c ASSOCIATES, INC. Civil Engineering -Water Resources --- s SHEET Landscape Architecture • Planning Environmental • Surveying r 15 580 SW Jay Street, Suite 200 II lr�;7'a J 1 J 10,J, 200 0 Beaverton.Oregon 97006 FSG 4 (503)644-6842 fax: (503)644-9731 - U7/08/' 003 TUE 08:43 FAX 503 644 9731 Kurahashi & Assoc. , Inc. . J002/002 ..,..,-4-:— •-1..•.-. -FID.O LEUC OR EQUAL CASKETS - / / ^`^ II I I. i• 4i. ...-. - vev.«- ., �.,",v.....,,.• •r` •..~• B•MEGl1LUG RETNNER .tib N.1\/'. 1 4, 3"MATER ✓Alzi 7- i I 0-443) GUS(EDAA IRON) (Se(DATA/44 Sh HOAAS CONCRETE PIER 0' GATE VALVE BLOo/ FLC• .I IAA SIDEWALK WITH PLANTER gam" u.4 x s• nO. TEE 7 c370 an WA STRIP AT CURB ®II SIDEIWALK .T MM. MN(.BREAK MNG NOTE ,e IPi;,-,:l4 .;:tr�i :•r 1. HYORAN7$TO BE MODERN MUELLER OENTURION, A-44Z,(OR APP1) EQUAL)C" 111 5 1/4' ..CFA•1 IND 3 PORT-- TNA 2 1/7" PENTAGON OPERATION NUT,OPEN LEFT 1MTN THE FOLLOWIND A. BR RACTUATION H. STORE ADAPTER B. BRONZE ACTUATION NUT C. BRONZE SEAT RTIC NIF D. WEATHER SNELD CAP E. SAFETY& EVE =PUPAS 1. THREADED NOTES WITH'O'RINGS C. NATIONAL STANDAR©THREADS TI_m. 3. SAFETY CAWS TO DE RDIOVED. 3. HYDRANTS 70 BE PAWED USNO R-1317 SAFLTY YELLOW OR AN ALTERNATE APPROVED BY DISTRICT EIRE MARSHALL. 4. HTDMIFT TO RE INSTALLED TRUE AND PLUMB. • 5. NO OBSTRUCTIONS NTN&3' 0•RADIUS OF HYDRANT. S. IF SUB.ECT TO VEHICLE DAMAGED.PROTECTIVE POST TO BE PROVIDED- • •• 7. VALVE BOW TO BE IN ACCORDANCE LATH STANDARD DRAITNO NO. 503 OR AS APPROVED DT PIONEER. unified 5. THRUST DUCKS SHALL NOT BE PLACED AT HTORANT LOCATIONS. sewerage egenM....• ILO 9:9.14 J erm.w oe P. FIRE HYDRANT DIM M. - E • wow.. A55E1101 Y 542 GI CLASS "B" CLASS "A" NOUFm moms wow!w•,4-- - rI s BAST Heal 910 //1 ....Act 1I I pyo.TISHOH To T. mo +E Too / AS SPEOnso FOR SCn11tyET• 51,Via PLUGGED TTE '*.1.N.:;:zer:„1.....7....p.„....-„; • b-.V ,,Slip.,?4— qm mamma .'• _ cl BO SILLL PIK SHAFT •'••. ' • • LATERAL 5110 S15 ROD -.2 '�•- -G NAEAR11-� • EANTN fir` aI''-9 ORISARO � �'TALZ4219.91 l s..• CON( NEE , '.e' ' ;\ s ZEFITTING O ES) 9F, UAW)1/4•SIL. KATE % • ;` ` 4 S b/- puMEIER • _• 1• •,r, a %E ff GORIER To s .i. L.• krr • --r 12 ,T TRUED 7/4-O ORo6® ..i�•'►:', - • • __ •• • 1/2 PIPE 0.0. ,6 \) 24 •:.-- *:-`_L IN Pl( PPE 7/4--4) MMAIMC .111,4i?: o' i:o"o• - ;. ' e4!00 e •~ ,ov 1. `a os o4e ae ':8 :.•r•, AGUE REARM AR • ALL(VA�E 90�BE COMMEs er�sNe STEAM USE THC T WNW ALS- 1 NOTED \ Qe: • : Oo• . 4 .4-,: a.. I. %f •% DETAIL NO. 2. COwrc1E ',Not3. QONCAEIL • THE MOORED 1/2 PVC C.D.PLUS 4'IAN. FOR PIPE HRA11ER THAN 10' Erumaxo ON 1n PPE Q.D.M.03 0' I1I4. FTji PIPE 11'AND LARCER AREA REAIAREI S F NOT ENWM ' wdUTED ARO \,. FAESSUFF[5)/ 7 "�CG1AL MIEN: e. pE4RINC AREAS PR DDICE EA -.....---- NO FEET. Nur TRENCH BACKFILL unified _ _ �'°" 505 DETAILS LA s sewera ` �� Ons 1Mo 5 = 4sw G,NQ..280 WETLAND AREA DISTURBED AREA TO BE REVEGITATED � - 31' TOP OF BER 6" OF RIP RAP EXISTING GROUND OVER PIPE INLET 10' X 10' CLASS 50 RIP RAP LIVE STAKE PLANTING 191I=111=111=11 -H1191 -11111 „�, _��to A/2' 0.C., TYP. 2 : CREEK \-IE=139.75 12" PVC I E=138.00 Stormwater Outfall Cross Section WETLAND AREA 6" OF RIP RAP OVER PIPE LIVE STAKE PLANTING 2' 0.C., TYP. 10' X 10' CLASS 50 RIP RAP -111== / =� IEa�„`. ORIGINAL GROUND I 1,00 NOTE: 12" PVC PLANT CORNUS SERICEA (REDTWIG DOGWOOD) AT IE= 138.00 2' 0.0. TYP. ON RIP RAP OUTFALL Stormwater Outfall Detail I R NA SCALE KURAHASHI Storm � ater Outfall - Wall Street Pond dc ASSOCIATES. INC. d.t1liteoutering .rater Reeo�uee, 1.cape Architecture . Plem:deg March �L, {�raj G} G{�� SHAY 15&• 80aSTl . SStreet, S Ut•!JarcUU U2y C�©O3 15580 Sr Jaz Street. Suite 200 FCIG Hea�crlcq Oregon 07000 .6 (503)&44 &42 tet(503)&44-4731 r � . ., .. , , ••til imam , �,\� ;' I \ �f%i ; KURAHASHI J .< ""- e t ,••. 1 �1` h ASSOCIATES,,INC. _ I (� ; k LEGEND: , :,,,;":.n„ �, '% fir 9 T 1 ; r' ,a mo , (.)444-85.1 rofi.001)1,11-(1/11 a ROOT WAD-(4 TOTAL) z• ,. t . I � i \ ,, : ,:\ ,., r , ®� .ii ) .,, k �, \ \\ C r -z � ':f • IN TRIBUTARY gg , „.„ r ,,,,, � �` CREEK ' (3), CRDO 1/ ; (1 ) QUG/�', 2 ALRU ' \ 2401/CAOB •.Y r��.� qwo C.• , \ SCSI - -^IAi/00/ 1 �/� y- . •...o 240 SCMI 7)3 \� '� J •t�,,,.N.it AVAV AsV'n� (3) S A S I I ��O :CI n ROOTWAD ...TYP. ,.�. ..Q•:a:::�• .., \ i ; , Is ,....-.1:.:...\ .-.. fl!"��4�`GJi-Ae,e--•.Oi . 1 1 1 I I -- ' 6..�1 �� .py,Alf/VA (450) CAGB , 'I;0 1,, ;• F��FC/ev..•.•b.�wipw f_ /I ollitsi r 0,00..e...eo.w.e/i. .�i im (450) SCMI 5 I i(3) ALRU •®� .�. 'ge..A - 41.6e�s:;:.20wi':T , 3 > ;f �^ _ ��:�_- �r�ram�fi; n?sole.,.. (3) ALRU jr, ', 'it f0 ''� • + �" - - `► B \RM i.1�. ., �`� ROOTWAD TYP' y, ._ _ �/ �i1 �• �� C ;DITCHPAGE .,,, . CRD _,w (4) SASa�::... - FLOW •.. iii Avw+vwvv♦ ♦�•ii�+wa r,.s ____iiii_2‹ _.. SCE 0 (2 6' H OD I. \ '��ePP�-1-�w�w� 0', f ��a;;` a ........ e 0 {.&00). SCMT— (38)�:.RO I-, �N (3) 750 F WETLAND BOUNDARY GOSE (36')' (�50� TE`G R\ \ �' GENERAL NOTE `\ \ WETLAND RESTORATION SCALE: 1.., SEE FIGURE 2 FOR `\\ \�\ AREA = 7800 S -4o°-c)" F PLANTING • , LEGENDETES: ANIS N 2. SEE FIGURE 3 FOR PF SKEET: : ROOTWAD DETAIL. o io 20' ao' SCALE: I"=4o'-0" NORTH File,7 • 1111111651 ICURAHASHI o AssOC ATse. INC. CIN wWni..n. .r..,"ARwly. .Il,.... 4.Mw1.1.ev.op,. MOO SW!q nb„l,!vile LM PLANTING LEGEND PLANTING LEGEND °r^ °(rooNI laoepn.-680 re.: Mu-ons LEES GROUND COVER ABBR. OTY. SYMBOL BOTANICAL /COMMON NAME SIZE CONDITION ABBR. QTY. SYMBOL BOTANICAL /COMMON NAME SIZE/SPACING CONOIIION ALRU 8 0 Alnus rubra / Red Alder 4'-6' B&B CA08 1290 :19:TTe Carex obnupta / Slough Sedge 12" O.C. CLUMPS CRDO 5 re -Cratoegus douglasii / Douglas Hawthorn 4'-6' B&B JVEF 750 ® Juncus. effusus / Soft Rush 12" 0.C. CLUMPS FRLA 3 l + 1 Froxinus latifolia / Oregon Ash 4'-6' B&B SCMI 1290 ::I!6 Scirpus microcarpus/ Small-fruited Bulrush 12" 0.0. TUBERS �•J TEGR 750 M Tellima grandiflora / Fringe Cup 4", 12' 0.C. POT QUGA 70 Quercus garryona / Garry Oak 4'-6' B&8 oV SASI 10 re Sallx sitchenels / Sitko willow 4'-6' B&B g SHRUBS ' ABBR. QTY. SYMBOL BOTANICAL /COMMON NAME SIZE/SPACING CONDITION LIVE STAKES K ABBR. QTY. SYMBOL BOTANICAL/COMMON NAME APPUCAT1ON RATE CONDITION COSE 966 1.._-1 Cornus sericea / Redosier Dogwood 2 GAL., 42" O.C. CONTAINER COSE 200 Cornus sericea / Redosier Dogwood 2' O.C. LIVE STAKE HODI 26 ® Holodiscus discolor/ Ocean-Spray 2 GAL, 60" O.C. CONTAINER MIN. 2' n' ROPI 36 Rosa pisocorpa / Clustered Rose 2 GAL., 42" O.C. CONTAINER LENGTH Q SACS 33 ®-, Sambucus cerulea / Blue Elderberry 2 CAL. 60" 0.C. CONTAINER fg VII" v? NOTES Cop 1. CONTRACTOR SHALL VERIFY ALL QUANTITIES, MEASUREMENTS AND SITE CONOmONB. 7. USE BARK MULCH TO A DEPTH OF 2" UNDER NEWLY PLANTED TREES 1"`' 2. THE CONTRACTOR WILL STAKE, OR FLAG, PROPOSED PLANT BED AND TREE LOCATIONS. AND SHRUBS. '- Gr THE CORNERS OF ALL SHRUB AND GROUND'COVER BEDS SHALL BE STAKED TO ALLOWP FOR REVIEW BY THE OWNER'S REPRESENTATIVE. 8. ALL PLANTS, MATERIALS, PLANTINGUSTAND SEEDING FEROREP SHALL CONFORMEEDQ TO NORMAL LANDSCAPE INDUSTRY STANDARDS, INFERIOR PLANTS OR SEED WILL °° 3. A PRE-PLANTING MEETING WILL BE HELD. CONTACT OWNER'S REPRESENTATIVE AT LEAST BE REJECTED. T`, TWO WEEKS PRIOR TO THIS MEETING. SUBMIT TO OWNER'S REPRESENTATIVE WITH NURSERY CONTRACTOR SHALL CONTROL BLACKBERRIES, THISTLE, TEASEL, PURPLE "SHIPPING UST" TO VERIFY PROPER SPECIES AND QUANTITIES. PROVIDE ONLY SOUND, LOOSESTRIFE, SCOTCH BROOM AND REED CANARYCRASS WHICH MAY DEVELOP Q HEALTHY. VIGOROUS PLANTS, FREE OF DEFECTS, DISEASES AND ALL FORMS OF O1— S INFESTATION. SAMPLES OF PLANT TABS, COMPOST, AND SEED MUST BE SUBMITTED. ON SITE IN NEWLY PLANTED AREAS UNTIL FINAL ACCEPTANCE. _ 8Y THE CONTRACTOR FOR REVIEW ANO APPROVAL BY OWNER'S REPRESENTATIVE. 10. CONTRACTOR SHALL PROVIDE ONE-YEAR PLANT WARRANTY AFTER ACCEPTANCE �' NO PLANTING WILL BE PERFORMED BEFORE THIS MEETING. OWNER'S REPRESENTATIVE OF PLANTING BY OWNER'S REPRESENTATIVE. THE CONTRACTOR SHALL REPLACE ALL r— MAY MAKE ADJUSTMENTS TO PLANT LOCATIONS AT THIS TIME. DEAD OR UNHEALTHY PLANTS FOUND BY OWNER'S REPRESENTATIVE AT THE END OF 4. PLANTING PERIOD IS WEATHER DEPENDENT AND PLANTING SEQUENCE SHALL BE THE WARRANTY PERIOD. 1 ADJUSTED ACCORDING TO SOIL MOISTURE. ALL TREE, SHRUB, AND GROUNDCOVER PLANTINGS SHALL BE COMPLETE BY THE THIRTY FIRST OF OCTOBER AND ALL GRASS 11. THE PLANT QUANTITIES LORWSWN ON PLANSE ARE FOR CONTRACTORSTHECONVENIENCE ONLY. SEEDING SHALL BE COMPLETE BY THE FIFTEENTH OF OCTOBER UNLESS PLANTING PERIOD THE CONTRACTORONTHE PLANTING LEGEND.FOR PLANTING AT THE SPECIFIED O.C. DISTANCE IS EXTENDED BY OWNER'S REPRESENTATIVE AS A RESULT OF CONTINUING MILD WEATHER. SHOWN ON THE LEGEND. 12. STREAM AND WETLAND PLANT FERTIUZATION REQUIREMENTS SHALL CORRESPOND TO g 5. KEEP PLANTS MOIST AND SHADED UNTIL INSTALLATION. DO NOT LEAVE THEM IN SPECIFICATION 02930 - 2.15 WETLAND PLANTING SOIL MIX. THE SUN OR LET THEM DRY OUT. WATER PLANTING AREAS AFTER PLANT INSTALLATION. 13 OEREAS SL DIFFERENT ES ENCRAND CR ) HWPLANTED WITH EQUANMBERSRANDOMLY SPACEDIPLANT BORDER AS 6. DIG, PACK, TRANSPORT AND HANDLE AU. PLANTS WITH CARE TO ENSURE 14. INSTREAM WORK SHALL TAKE PLACE BETWEEN JUNE I AND SEPTEMBER 30. • PROTECTION FROM INJURY. STORE PLANTS IN THE MANNER NECESSARY TO ACCOMMODATE THEIR HORTICULTURAL REQUIREMENTS. HEEL-IN PLANTS 15. CONTRACTOR SHALL NOT COMPACT BACKFILL. IFNECESSARY TO PROTECT ROOT BALLS AND KEEP THEM FROM DRYING SCALE: M.I.5% UNDISTURBED NATIVE SOIL R1fi�'� EXISTING BANK AND BED KURAHASIII ,24)..? \\ . Ad ASSOCIATES. INC. aw 1M•...1. r.,..W....r.., LIMIT OF EXCAVATION d 1 16666 61 Jq IV..1.6"U.100 COMPACT NATIVE SOIL BACKFILL TO 807 i.7,74;"="1..74.,,_.,, 2"X4"X24" WOOD STAKES CUT FROM UNTREATED DOUG FIR 2"X4" STAKES 4' O.C., TYP. LIVE STAKES ROOT WAD FINISH GRADE LIVE STAKES © 2' O.C., TYP. �,� v ROLANKA BIO D—MAT 90 (S '' �Z 4 EROSION CONTROL BLANKET _ I� � j� �`�; I (OR APP. EQUAL), TYP. — `I" f�� , ' D�lif*Y4 2'-0" / ✓ . �'', aM4,2_)5O_oii W _, HEIGHT WOOD STAKE I t , C�?� ; .,. �01 — VARIES r=, �, �� j mss', ; �s�� ry�� -y�♦` �� 0 ` O V, \L SCS '�✓` , rR--4-- •/*-wk��>,l�I`I``Ijl�N`�'i��I `jYJj�f"?,j`"�j�' ✓ �` /• /.\, ‘x >.\,\4 . N",<,•, x `" \i---- ------- -\,__:/ 8'-0 SECTION ROOT WAD o EMBANKMENT PLAN DEPTH / 1 so NOTES: u, 1 1. ROOT WAD TO PROTRUDE INTO CHANNEL THE DEPTH OF THE ROOTMASS AS MEASURED FROM EXISTING BANK CHANNEL. 2. TREES REMOVED FROM SITE SHOULD BE UTILIZED AS ROOT WADS... COORDINATE WITH OWNER'S REPRESENTATIVE. 3. CUT LIVE STAKES END TO A POINT FOR EASIER INSTALLATION. • 4. TRIM OFF BRANCHES FROM LIVE STAKES W/ CLEAN CUTS. 5. LIVE STAKES ARE TO BE PLACED 2' O.C. 6. BATTER ROOT WAD TO MATCH EXISTING CHANNEL BANK. SCALE: H.T.S. El) SOFT G A 310\ SHEET: SCALE: NTS (SECTION & PLAN) F00.9 9 • I• I ‘‹. J r i\! , /)> 1/ .?-2:;?-21. ..... ..r .... .. _,_. ._ .........__.... A vh J INC.+ I{U A SIII ♦ ASSOCIATES.I • I t E � f NI fnjFt Pnenhrrri (•,„,:i......?: , (/,' /' �...• _..-- .... LEGEND I� ��,t �{ \ r f ....``•,.. 6n.trort at.1 x.e LOCATION POINTSn.....1rt `, : (4,;.: if. t1 ..... / l I • �Y , '• {sPa nit-eA,2 Try l�,m}a„8731 P1 PHOTO • i, • , - i ii .,..,,,,, ,„...„:„.../. .,,,„. \ ' \\‘..,,,,t,:,,,,,,,:://:,f,.:,{if.:‘,„\\,,,,,,,,,,,,\ ,,,,, t/ i' i , \iii C71 ,,,,,,,".•.(''. ./!..,i,,i,",: ,.:,.i,,,.,,, i'.,..:,/).,,,—D ,„„..,. / n 1 1(,'�LYr\_ .� YN4��. V,1\V t `,I I t C �V ),..,„*,„7.411N., Ted P _ 'I { a • P1 „ \ ., r Dm Y1 �' S,. \.,„ Blot 1\' ,, \ \` --,,-,-----,-,,,-*-,,,44.4%$ h. ?,`, _......_..._..__.... /� 1 ,_�V.. 7 s,":0:2‘ �,,� is t ck� — -._ ___ �jvj ,,® xA{t. 7 fi , aV �” . 1,3{ y t ti ��? • N-,,,,....,-:,, ., J y31 �i+.. tY +.. .. v. „!...,<y..r {'e-r .df'w it >./v,NNN:._ { 1.....,...... ¢ ? F) t �� \ \ A AV A , �\ t140IFalc;:. • ,•\ . ° ^ °\ V\ V A • v ',\ \ iik --1.....1--‘ 4111, SHEET; \ \ ; 0 10' 20' 40' SCALE: 1"=40'-0“ NORTII FIG.10 • Plant Monitoring Objectives and Success Criteria The monitoring goals are to be achieved by meeting the following objectives and success criteria: •Planting KURAHASI I 61 ASSOCIATES, INC. li.1t[n,ln...ln, PJnr P••nvt.. Establish riparian wetland plant community over the 7,800 square feet of wetland restoration area. Iv.r•,..,,�lKlrr. •i,.nnln< NMrsnm•sIJ.TOr•,Iry ^ R 2•,Ylr••l..9,kI1.20O The success criteria willbe at least 80 percent total vegetative coverage(estimated visually)the end of the first year. .•660°l.n.0,n. N.J (603)611-1612 loot(600)841-1fl1 The success criteria will be at least 80 percent total vegetative coverage(estimated visually)by desirable natives by the end of the second year. The success criteria will be 80 percent total vegetative coverage(estimated visually)by the end of the monitoring period(third year). The success criteria is to have native trees well established by the end of the monitoring period. The success criteria is that non-native invasive species reed canarygrass and Himalayan blackberry shall not exceed 20 percent cover after three years. • Monitoring Program (off To ensure the successful completion of the restoration plan,monitoring will be conducted over three years. An as-built topographic survey will be oe conducted and an as-built report submitted within 60 days after initial planting is completed. Inspections will be conducted once annually in the three year c monitoring period; with a comprehensive report compiled for each annual visit, by a landscape architect or a biologist. The three monitoring reports will include text describing findings and conclusions,plus photographs of site conditions,plant performance data,limited hydrologic data, and other information such as observed wildlife usage. •Monitoring Criteria Planting This program would monitor vegetation parameters for a period of three years and include recommendations for removal and management of undesirable invasive species, to preclude dominance by one species. Total plant counts established on the mitigation planting plan will be used in determining . vegetation parameters discussed below. Selected trees will be tagged in order to monitor growth and survival rates of different species in a range of locations. In addition,permanent photographic points would be established to provide further documentation of the changes in wetland vegetation over time. See Mitigation.Plant Monitoring Plan for locations of proposed photo points. Annual vegetation sampling would be conducted during late March, and in the late growing season.Each of the parameters to be monitored is further described below. a. Vegetation Monitoring; Vegetation would be monitored annually during late March and the late growing season within two weeks of the same time every year. Monitoring would consist of species list compilation and estimated percent cover of vegetation within established mitigation area. To C supplement this information,photographs would be taken that provide a representative sample of each shrub and groundcover species proposed. Groundcover•data would be collected, and shrub and tree data collected within the restoration boundary. C b. Tree Tags:To document the rates of growth and survival, a representative tree will be tagged and monitored. To supplement this information, photographs of the tagged tree would be taken. c. Overview Photographic Sampling: To supplement the sampling measurements described above,permanent overview photographic points would be tsL3 established sufficient to provide consistent photographic documentation for the entire mitigation area and the overall character of the restored wetlands. Contingency Program Should the desired mitigation goals not be achieved, a contingency program will be initiated. The first step of the contingency program is to complete an analysis of the cause of failure in meeting a mitigation performance standard. Once determined, appropriate remediation steps would be proposed. These steps may involve replacing plants that have not survived or additional plantings if growth rates are poor,increasing frequency of maintenance and watering schedules, weed control efforts should reed canarygrass and Himalayan blackberry persist, and further excavation or adjustments to site hydrology ifCAL " required to provide the necessary hydrologic regimes. A written plan will be submitted.to DSL for their approval prior to implementing the plan. The plan •will include an implementation schedule and identify funding sources and parties(names,titles,addresses,and phone numbers) responsible for T n implementing and monitoring the success of the contingency plan. SHEET: FoCr . H I L`,1) 0c Z Q I `y' ° m � I ° � 0 I rL 900 174.,.5600 k V 71 1100 HAL[ gL t/D. ,otce_- 1�� rL 1200 rL IJoo q Q 0�'I i Jfg7 l _ '_" _- -I - -�_* cb S�cb T st00 _ I� 1< I 1! ... __ --I - ----I- - 7f A7 8 � 1 _ a 800 rL 401 j rL 400 -- ,.. __� 00 i Location of Culvert n -Too I 1 n zoo I .................. +— ,—_ to be extended I a 100 r� soo i _ _ ` fOUNO 5/8/NCH/RON R00 ` \ II I Ih II IBM X71N A ! 1//'At UM/NUM CAP I 1 r FANNO PO/NTE W I oN °'ES 6^� W r?1 PROPOS D T/GARD s DEVELOPMENT i� V LIBRARY SITE I � t'1 Approxinate Location ofProq osed Bioswa/e-----® I I I I / LEGEND II y I 1 1 `°'.;'_'`;`r Sidewalk I 1I I I i i i /Approximate Location / :::� Landscaping 1i 11 i 11 of Fenno Creek —--� I 1`11, I // , 1 \ �1 ) i \\ 0 90 leo 300 1 I SCALE IN FEET FIGURE Location of the Hall Boulevard widening project (base map provided by 2711 I2, DeHaas and Associates, 2003). 5/14/03 Pacific Habitat Services, Inc. 1>tts i k i I i 11 Exist CB Q / S a 2+77.31, 2J.55' RT Construct I Grote 156.23 bondon ODOT inlet CG-2 r \• / J I EX/ST. 4"PSC Ho// B/vd. Exist. Wel/and 1 (�� I /E=150..PIP \ / �1 Ir_(...___. !, I i" --/E 143.82 Exist CB // / Grate 156.18 ,I TP.IBUTARY TO i~ I ! . Exist CB f.,;f //' �T NO CREEK Grote 156.1: _._._ M :� ,I I ii- 150.38— 1 i If /� �-".- ' 44 cu. yd. of H„ '' j '� G Upland to be r i I i� 151.23----� --- '® " 18 SU, exist.f. ) _ Excavated . , ; Culvert __- —" Reconstruct channel ILi Al/ Irks/apes in to Extend J ` ' 24' C76—1 ;4.,i y Concrete Advert pipe outflow area Channel Remove Cu/vert i S= 0.0310 to be 2.1 Afok.`"\ li I� \\��Location o" 3.5 ft. y 3.5 ft. Gap in 18" and 24" Culverts Ii i ' I 24" Conc cult':rt —— ^� IE 152.09 �?,, \, c i? i II 12" Conc 1 (I culvert — I!% /E 152.34 1 i _ .__-__Exisfst SS ittH 55.45 ..._._. ..�.. N Sv 'm 156.32 REGI;i,,.i L_N.1-. ,_...._ I 50' BU N (i !T I �, ~" I f°i,i.. ' lc, / '77 . '` _, ) 0 10 20 {0 i SCALE IN FEET i 1 • FIGURE I Plan view of the culvert extension for the Hall Boulevard widening project 2711 j (base map provided by DeHaas and Associates, Inc., 2003). 5/14/03 ! 3 is , . rtes Pacific habitat Services, Inc. f - j i I • o m con o V [a' PUE o .JO N U , O uj h,O { ......................................_.....Q.. tO.�•-•. ^ i 45 O j VMW )II IIS coII n ^mnW ^ 160 . W to .. + h 3 _ _ — 1 ---- "--- -- r �2:1 fox. to DISTANCE BETWEEN EXISTIvN I o + W 154 ..1..a"....AND..24.'.'_...CIULVERT.S.....................-., ... _.....-.. ... .. .__ ... - j„ (7--- i I -. ii vEs w o W -2f. 24•• Con---- -.-�.._ S= o.az72 `' Calvert 1 \,. W150 �; �- Ilr i.,”" Exist. 78 Cul _ ' STL vert j R�gri , Scale: 1 ".= 70' Horiz. �,i �_ — �j � o _ 1 — »— 2' Vert. <I,h I Remove exis�. 18.. e^ * II Stl. culvert i I II ^ IL S=2 " C76—V0.0310 Concrete Culvert 146 i 1+00 1+40 1+80 2+20 • 0 10 20 40 r i I SCALE IN FEET FIGURE Typical cross—section of the culvert extension for the Hall Boulevard 2711 widening project (base map provided by DeHaas and Associates, Inc., 5/14/03 111 2003). Pacific Habitat Services, Inc. n11t-ts GENERAL NOTES: 1. Protect all trees on site. )I I ``l. $v ; I a CONSTRUCTION NOTES. I ��, '�"1 ' 1,� 1: Existing buildings to be ( 3I' i i ``.,. F.}.. removed by others. -;I I ' ' j I `.t. II o i _ \ 2 i I o_ �. I Construct water quality I1 I III \ I i ' `. ��, c r.-�.,>�.,�� ...ti_,4v,\ :;.._..,.„` %swale. � ' I %� 1 'r _ h / - __/ / 3. Construct ditch inlet. See IV , Detail Bond C. / - 22' x 24' Curlex Blanket tz.-2J '' _ 2 4. Connect to new storm sewer : 1 ` ) in street. Begin water ' • • quality facility bid item. ^J - 0 i ...... , 5. Construct inlet flow ad, full c:.' 7 C�N�0 �� width of channel. ` . r .�I L -r U ALL STRUCTURE..---..,.,- I � 6. Reseed swale after grading. I ,,,,----,1,--6," 11,0 -- --• '� ' IE=139:651 See landscape plans. j c) :'' I ,' ��,.c4 •• `- • . — .. • . ; -1 jtv I i I I�j I.. i _,.._ ' • , Ex�ing/louse I I I 1 ! I I. o, a removed 1 , 1 148 148 __ —_ ._ -.. _.....—` _.__. !T: ...,.•i W.L...._._°. !•\___ i l - ! .__._ L..—.. � .''i�uxistu>y t7oo^iJ i----i i._ "� �?; L_ l. ' 14.4 1 /44 ._, .,. _...�._a-�..._._.__�_� _ _ _ _ .-.._, f,1 1 !r_ C7t`rV conn. d -•._jam- 4L 1 ��lY� -' .. iI i V 1 I , 2i i N V J �. r'—._.., .I, Bottom nr'swab" i!........_._4,....___4_, ._ '''''. 140 O.J7• C-'�:r' ..—_. / . ` ( 140 I i i \J • 1 1_ _. i �,E ' i' 1.... Y2'fYVC 5e,:0.01 I I I ;._ , 1 .I I __.._i5:1 4r" 11"IC::!i•-V cc.•rc. I ....i.' I ...I_ .' ! ('j.' i j I I+ ! 1 S.-10,0244 C 131,'1 C'� ��, I I I LSA"'i -i I_--.-•-,-W I — 1-- rlaf�.=� 73.7.f,•4 !1J6 ..� �t!I J - — , i-Ta ! �! I i )V 1 I N4^.j'oY s4triOC;! 7 1 �lC) 1 „III I 11r.., 1 ! i.. ,...i ...., . ±� , ,. :? u! j I CURLEX BLANKET I ! i ; i 1 , 1.12 i ! ! i ' w , c., i ! � h rig i I ! ! .____._ 728 j :+I.Y I o iJr..S_.�: • { 1 I 128 ` I — — 1 - c. 1 i i 1 I 1� I 1 l /24 <J 1 I ( I '...124 ...___-_•,_ 0+00 0440 _ 0+80 1+20 1+60 2+00 2+40 2+80 ______• 3+20—,—___• 1 0 25 50 100 i inimmiinie1 SCALE IN FEET FIGURE Typical cross—section of the proposed bioswale for the Hall. Boulevard 271 widening project (base map provided by DeHaas and Associates, Inc., 5/14/03 1 6 2003). ...., ,1 , . pHsPacific I-Iabitat Services, Inc. ._ Portland District Regional Conditions (a)In-water Work Windows: All in-water work, including temporary fills or structures, shall occur between July 1 and September 30. Exceptions to these time periods require specific approval from the Corps. (b)Upland Disposal: All excess material will be taken to a suitable upland location for disposal. The material shall be placed in a location and manner that prevents its discharge into waterways or wetlands. (c) Heavy Equipment: Heavy equipment shall be operated from the bank and not placed in the stream unless specifically authorized by the District Engineer. Heavy equipment must be placed on mats or similar precautions must be taken to minimize damage to wetland resources. (d)Fish Screening: Fish Screening will comply with standards approved by the National Marine Fisheries Service or the Oregon Department of Fish&Wildlife, as appropriate. (e) Cultural Resources& Human Burials: Permittees must immediately notify the District Engineer if at any time during the course of the work authorized,human burials, cultural resources,or historic properties, as identified by the National Historic Preservation Act, may be affected. Failure to stop work in the area of exposure until such time the Corps has complied with the provisions of 33 CFR 325, Appendix C, the National Historic Preservation Act and other pertinent regulations, could result in violation of state and federal laws. Violators are subject to civil and criminal penalties. (f) Fish Passage: Pei inittee shall insure activities authorized by nationwide permit will not restrict passage of aquatic life. Activities such as the installation of culverts or diversion structures, or other modifications to channel morphology must be designed to be consistent with fish passage standards developed by the Oregon Depaitiiient of Fish and Wildlife (ODFW) and the National Marine Fisheries Service (NMFS). The standards can be found in the document entitled "ODFW standards and Criteria for Stream Road Crossings". The streambed shall be returned to pre-construction contours after construction unless the purpose of the activity is to eliminate a fish barrier. (g)Riparian Vegetation Protection & Restoration: When working in waters of the United States or riparian areas the construction boundary shall be minimized to the maximum extent practicable. Pei inittee shall mark and clearly define the construction boundary before beginning work. Native riparian vegetation will be successfully established along tributaries where the vegetation was removed by construction. The plantings shall start at the ordinary high water mark and extend 10 feet back from the top of the bank. The plantings must be completed by the end of the first planting season following the disturbance. (h) Erosion Controls: All practicable erosion control devices shall be installed and maintained in good working order throughout construction to prevent the unauthorized discharge of material into a wetland or tributary. The devices shall be installed to maximize their effectiveness, e.g. sediment fences shall generally be buried or similarly secured. These controls shall be maintained until permanent erosion controls are in-place. F1AS 2_ Practicable erosion control measures include but are not limited to the following: a. Fill is placed in a manner that avoids disturbance to the maximum practicable extent(e.g. placing fill with a machine rather than end-dumping from a truck); b. Prevent all construction materials and debris from entering waterway; c. Use filter bags, sediment fences, sediment traps or catch basins, silt curtains, leave strips or berms,Jersey barriers, sand bags, or other measures sufficient to prevent movement of soil; d. Use impervious materials to cover stockpiles when unattended or during rain event; e. Erosion control measures shall be inspected and maintained daily to ensure their continued effectiveness; f. No heavy machinery in a wetland or other waterway; g. Use a gravel staging area and construction access; h. Fence off planted areas to protect from disturbance and/or erosion; and i. Flag or fence off wetlands adjacent to the construction area. (i)Maps and drawings: In addition to the items required in Nationwide Permit General Conditions 13, all preconstruction notifications shall contain maps showing the project location as well as plan-view and cross-sectional drawings showing the proposed work. The map(s) shall be of a scale and detail to clearly identify the project location(s). Drawings shall be sufficient in number and detail to accurately portray the project. (j) Bank Protection: Rip-rap shall be clean, durable, angular rock. The use of other materials such as broken concrete, asphalt, tires, wire, steel posts or similar materials is not authorized. The project design shall minimize the placement of rock and maximize the use of vegetation and organic material such as root wads to the extent practicable. Riparian plantings shall be included in all project designs unless the permittee can demonstrate they are not practicable. The permittee must notify the District Engineer in accordance with nationwide permit general condition#13 for any activity that includes bank stabilization. (k) Inspection of project site: The permittee must allow representatives of the Corps to inspect the authorized activity to confirm compliance with nationwide pel wit terms and conditions. Personnel from the Oregon Department of Environmental Quality and the Department of Land Conservation and Development are considered to be authorized "representatives" for the purpose of Section 401 Water Quality or Coastal Zone Management inspections. For projects on tribal land the Environmental Protection Agency is considered an authorized representative. A request for access to the site will no'wally be made sufficiently in advance to allow a property owner or representative to be on site with the agency representative making the inspection. (1) Sale of property/transfer of permit: If you sell the property associated with this permit,you must transfer the permit to the new owner(s) and obtain their signature(s). A copy of this permit with the new owner(s) signature shall be sent to this office to validate the transfer of this permit authorization. • Nationwide Permit General Conditions (From the January 15, 2002 Federal Register, Vol. 67, No. 10) 1. Navigation 2. Proper Maintenance 3. Soil Erosion and Sediment Controls 4. Aquatic Life Movements 5. Equipment 6. Regional and Case-by-Case Conditions 7. Wild and Scenic Rivers 8. Tribal Rights 9. Water Quality 10. Coastal Zone Management 11. Endangered Species 12. Historic Properties 13. Notification 14. Compliance Certification 15. Use of Multiple Nationwide Permits. 16, Water Supply Intakes 17. Shellfish Beds 18. Suitable Material 19. Mitigation 20. Spawning Areas 21. Management of Water Flows 22. Adverse Effects from Impoundments 23. Waterfowl Breeding Areas 24. Removal of Temporary Fills 25. Designated Critical Resource Waters 26. Fills Within 100-year Floodplains 27. Construction Period End, 3 1 • C. Nationwide Permit General Conditions The following General Conditions must be followed in order for any authorization by an NWP to be valid: 1. Navigation. No activity may cause more than a minimal adverse effect on navigation. 2. Proper Maintenance. Any stricture or fill authorized shall be properly maintained, including maintenance to ensure public safety. 3. Soil Erosion and Sediment Controls. Appropriate soil erosion and sediment controls must be used and maintained in effective operating condition during construction,and all exposed soil and other fills, as well as any work below the ordinary high water mark or high tide line, must be permanently stabilized at the earliest practicable date. Permittees are encouraged to perform work within waters of the United States during periods of low-flow or no-flow. 4. Aquatic Life Movements. No activity may substantially disrupt the necessary life-cycle movements of those species of aquatic life indigenous to the waterbody, including those species that normally migrate through the area, unless the activity's primary purpose is to impound water. Culverts placed in streams must be installed to maintain low flow conditions. 5. Equipment. Heavy equipment working in wetlands must be placed on mats, or other measures must be taken to minimize soil disturbance. 6. Regional and Case-Bv-Case Conditions. The activity must comply with any regional conditions that may have been added by the Division Engineer(see 33 CFR 330.4(e)). The activity must comply with any regional conditions that may have been added by the Division Engineer(see 33 CFR 330.4(e))and with any case specific conditions added by the Corps or by the state or tribe in its Section 401 Water Quality Certification and Coastal Zone Management Act consistency determination 7. Wild and Scenic Rivers. No activity may occur in a component of the National Wild and Scenic River System;or in a river officially designated by Congress as a"study river" for possible inclusion in the system,while the river is in an official study status; unless the appropriate Federal agency, with direct management responsibility for such river, has determined in writing that the proposed activity will not adversely affect the Wild and Scenic River designation, or study status. Information on Wild and Scenic Rivers may be obtained from the appropriate Federal land management agency in the area(e.g., National Park Service,U.S. Forest Service,Bureau of Land Management, U.S. Fish and Wildlife Service). 8. Tribal Rights. No activity or its operation may impair reserved tribal rights, including, but not limited to, reserved water rights and treaty fishing and hunting rights. 9. Water Quality. (a) In certain states and tribal lands an individual 401 Water Quality Certification must be obtained or waived(See 33 CFR 330.4(c)). (b) For NWPs 12, 14, 17, 18,32,39,40,42,43, and 44,where the state or tribal 401 certification(either generically or individually) does not require or approve water quality management measures, the permittee must provide water quality management measures that will ensure that the authorized work does not result in more than minimal degradation of water quality(or the Corps determines that compliance with state or local standards, where applicable,will ensure no more than minimal adverse effect on water quality). An important component of water quality management includes stormwater management that minimizes degradation of the downstream aquatic system, including water quality(refer to General Condition 21 for stormwater management requirements).Another important component of water quality management is the establishment and maintenance of vegetated buffers next to open waters, including streams(refer to General Condition 19 for vegetated buffer requirements for the NWPs). This condition is only applicable to projedts that have the potential to affect water quality. While appropriate measures must be taken, in most cases it is not necessary to conduct detailed studies to identify such measures or to require monitoring. 10. Coastal Zone Maria.mein. In certain states,an individual state coastal zone management consistency concurrence must be obtained or waived(see 33 CFR Section 330.4(d)). 11. Endangered Species. (a)No activity is authorized under any NWP,which is likely to jeopardize the continued existence of a threatened or endangered species,or a species proposed for such designation, as identified under the Federal Endangered Species Act(ESA), or which will destroy or adversely modify the critical habitat of such species. Non-federal permittees shall notify the District Engineer if any listed species or designated critical habitat might be affected or is in the vicinity of the project, or is located in the designated critical habitat and shall not begin work on the activity until notified by the District Engineer that the requirements of the ESA have been satisfied and that the activity is authorized. For activities that may affect Federally-listed endangered or threatened species or designated critical habitat,the notification must include the name(s)of the endangered or threatened species that may be affected by the proposed work or that utilize the designated critical habitat that may be affected by the proposed work. As a result of formal or informal consultation with the FWS or NMFS the District Engineer may add species-specific regional endangered species conditions to the NWPs. (b)Authorization of an activity by a NWP does not authorize the"take"of a threatened or endangered species as defined under the ESA. In the absence of separate authorization(e.g., an ESA Section 10 Permit, a Biological Opinion with"incidental take"provisions,etc.)from the USFWS or the NMFS,both lethal and non-lethal"takes"of protected species are in violation of the ESA. Information on the location of threatened and endangered species and their critical habitat can be obtained directly from the offices of the USFWS and NMFS or their world wide web pages at http://www.fws.gov/r9endspp/endspp.html and http://www.nrnfs.noaa,gov/profres/OvervieW/eS.htfll respectively. 12. Historic Propet-ties. No activity which may affect historic properties listed,or eligible for listing, in the National Register of Historic Places is authorized,until the District Engineer has complied with the provisions of 33 CFR Part 325,Appendix C. The prospective permittee must notify the District Engineer if the authorized activity may affect any historic properties listed, determined to be eligible,or which the prospective permittee has reason to believe-may be eligible for listing on the National Register of Historic Places,and shall not begin the activity until notified by the District Engineer that the requirements of the National Historic Preservation Act have been satisfied and that the activity is authorized. Information on the location and existence of historic resources can be obtained from the State Historic Preservation Office and the National Register of Historic Places(see 33 CFR 330.4(g)). For activities that may affect historic properties listed in,or eligible for listing in,the National Register of Historic Places,the notification must state which historic property may be affected by the proposed work or include a vicinity map indicating the location of the historic property. 13. Notification. (a)Timing;where required by the terms of the NWP,the prospective permittee must notify the District Engineer with a preconstruction notification(PCN)as early as possible. The District Engineer must determine if the notification is complete within 30 days of the date of receipt and can request additional information necessary to make the PCN complete only once. However,if the prospective permittee does not provide all of the requested information,then the District Engineer will notify the prospective permittee that the notification is still incomplete and the PCN review process will not commence until all of the requested information has been received by the District Engineer. The prospective permittee shall not begin the activity: (1)Until notified in writing by the District Engineer that the activity may proceed under the NWP with any special conditions imposed by the District or Division Engineer; or (2)If notified in writing by the District or Division Engineer that an Individual Permit is required; or (3)Unless 45 days have passed from the District Engineer's receipt of the complete notification and the prospective permittee has not received written notice from the District or Division Engineer. Subsequently,the pennittee's right to proceed under the NWP may be modified, suspended,or revoked only in accordance with the procedure set forth in 33 CFR 330.5(d)(2). (b)Contents of Notification: The notification must be in writing and include the following information: (1)Name,address and telephone numbers of the prospective permittee; (2)Location of the proposed project; (3)Brief description of the proposed projgct;the project's purpose;direct and indirect adverse environmental effects the project would cause;any other NWP(s),Regional General Permit(s),or Individual Permit(s)used or intended to be used to authorize any part of the proposed project or any related activity. Sketches should be 3 provided when necessary to show that the activity complies with the terms of the NWP (Sketches usually clarify the project and when provided result in a quicker decision.); (4) For NWPs 7, 12, 14, 18, 21, 34,38, 39,40,41,42, and 43, the PCN must also include a delineation of affected special aquatic sites, including wetlands, vegetated shallows (e.g., submerged aquatic vegetation, seagrass beds),and riffle and pool complexes(see paraeraph 13(f)); (5) For NWP 7(Outfall Structures and Maintenance), the PCN must include information regarding the original design capacities and configurations of those areas of the facility where maintenance dredging or excavation; is proposed; (6)For NWP 14 (Linear Transportation Projects),The PCN must include a compensatory mitigation proposal to offset permanent losses of waters of the US and a statement describing how temporary losses of waters of the US will be minimized to the maximum extent practicable; (7) For NWP 21 (Surface Coal Mining Activities), the PCN must include an Office of Surface Mining(OSM) or state-approved mitigation plan,if applicable. To be authorized by this NWP, the District Engineer must determine that the activity complies with the terms and conditions of the NWP and that the adverse environmental effects are minimal both individually and cumulatively and must notify the project sponsor of this determination in writing; (8) For NWP 27(Stream and Wetland Restoration), the PCN must include documentation of the prior condition of the site that will be reverted by the permittee; (9) For NWP 29(Single-Family Housing), the PCN must also include: (i)Any past use of this NWP by the Individual Permittee and/or the permittee's spouse; (ii) A statement that the single-family housing activity is for a personal residence of the permittee; (iii)A description of the entire parcel, including its size,and a delineation of wetlands. For the purpose of this NWP,parcels of land measuring 'A-acre or less will not require a formal on-site delineation. However,the applicant shall provide an indication of where the wetlands are and the amount of wetlands that exists on the property. For parcels greater than '/-acre in size, formal wetland delineation must be prepared in accordance with the current method required by the Corps.(See paragraph 13(f)); (iv)A written description of all land(including,if available, legal descriptions)owned by the prospective permittee and/or the prospective permittee's spouse,within a one mile radiusofthe parcel,in any form of ownership (including any land owned as a partner,corporation,joint tenant,co-tenant,or as a tenant-by-the:entirety)and any land on which a purchase and sale agreement or other contract for sale or purchase has been executed; (10)For NWP 31 (Maintenance of Existing Flood Control Projects),the prospective perm`Ve must either notify the District Engineer with a PCN prior to each maintenance activity or submit a five year(or less) maintenance plan. In addition,the PCN must include all of the following: (i) Sufficient baseline information identifying the approved channel depths and configurations and existing facilities. Minor deviations are authorized,provided the approved flood control protection or drainage is not increased; (ii)A delineation of any affected special aquatic sites, including wetlands;and, (iii)Location of the dredged material disposal site; (11)For NWP 33 (Temporary Construction,Access,and Dewatering),the PCN must also include a restoration plan of reasonable measures to avoid and minimize adverse effects to aquatic resources; (12)For NWPs 39,43 and 44,the PCN must also include a written statement to the District Engineer explaining how avoidance and minimization for losses of waters of the US were achieved on the project site; (13)For NWP 39 and NWP 42, the PCN must include a compensatory mitigation proposal to offset losses of _ waters of the US or justification explaining why compensatory mitigation should not be required. For discharges that cause the loss of greater than 300 linear feet of an intermittent stream bed,to be authorized, the District Engineer must determine that the activity complies with the other terms and conditions of the NWP,determine adverse environmental effects are minimal both individually and cumulatively, and waive the limitation on stream impacts in writing before the permittee may proceed; (14)For NWP 40(Agricultural Activities), the PCN must include a compensatory mitigation proposal to offset losses of waters of the US. This NWP does not authorize the relocation of greater than 300 linear-feet of existing serviceable drainage ditches constructed in non-tidal streams unless, for drainage ditches constructed in intermittent non-tidal streams, the District Engineer waives this criterion in writing, and the District Engineer has determined that the project complies with all terms and conditions of this NWP, and that any adverse impacts of the project on the aquatic environment are minimal, both individually and cumulatively; (15)For NWP 43 (Stonnwater Management Facilities),the PCN must include, for the construction of new stormwater management facilities,a maintenance plan(in accordance with state and local requirements, if 4 _.. applicable)and a compensatory mitigation proposal to offset losses of waters of the US. For discharges that cause the loss of greater than 300 linear feet of an intermittent stream bed,to be authorized,the District Engineer must determine that the activity complies with the other terms and conditions of the NWP,determine adverse environmental effects are minimal both individually and cumulatively, and waive the limitation on stream impacts in writing before the permittee may proceed; (16)For NWP 44 (Mining Activities), the PCN must include a description of all waters of the US adversely affected by the project, a description of measures taken to minimize adverse effects to waters of the US, a description of measures taken to comply with the criteria of the NWP, and a reclamation plan(for all aggregate mining activities in isolated waters and non-tidal wetlands adjacent to headwaters and any hard rock/mineral mining activities); (17)For activities that may adversely affect Federally-listed endangered or threatened species, the PCN must include the name(s)of those endangered or threatened species that may be affected by the proposed work or utilize the designated critical habitat that may be affected by the proposed work;and (18)For activities that may affect historic properties listed in,or eligible for listing in,the National Register of Historic Places,the PCN must state which historic property may be affected by the proposed work or include a vicinity map indicating the location of the historic property. (c)Form of Notification: The standard Individual Permit application folin(Form ENG 4345)may be used as the notification but must clearly indicate that it is a PCN and must include all of the information required in(b)(1)-(18) of General Condition 13. A letter containing the requisite information may also be used. (d) District Engineer's Decision:In reviewing the PCN for the proposed activity,the District Engineer will determine whether the activity authorized by the NWP will result in more than minimal individual or cumulative adverse environmental effects or may be contrary to the public interest. The prospective permittee may submit a proposed mitigation plan with the PCN to expedite the process. The District Engineer will consider any proposed compensatory mitigation the applicant has included in the proposal in determining whether the net adverse environmental effects to the aquatic environment of the proposed work are minimal. If the District Engineer determines that the activity complies with the terms and conditions of the NWP and that the adverse effects on the aquatic environment are minimal, after considering mitigation, the District Engineer will notify the permittee and include any conditions the District Engineer deems necessary. The District Engineer must approve any compensatory mitigation proposal before the permittee commences work. If the prospective permittee is required to submira compensatory mitigation proposal with the PCN,the proposal may be either conceptual or detailed. If the prospective permittee elects to submit a compensatory mitigation plan with the PCN,the District Engineer will expeditiously review the proposed compensatory mitigation plan. The District Engineer must review the plan within 45 days of receiving a complete PCN and determine whether the conceptual or specific proposed mitigation would ensure no more than minimal adverse effects on the aquatic environment. If the net adverse effects of the project on the aquatic environment(after consideration of the compensatory mitigation proposal) are determined by the District Engineer to be minimal,the District Engineer will provide a timely written response to the applicant. The response will state that the project can proceed under the terms and conditions of the NWP. If the District Engineer determines that the adverse effects of the proposed work are more than minimal,then the District Engineer will notify the applicant either:(1)that the project does not qualify for authorization under the NWP and instruct the applicant on the procedures to seek authorization under an Individual Permit;(2)that the project is authorized under the NWP subject to the applicant's submission of a mitigation proposal that would reduce the adverse effects on the aquatic environment to the minimal level;or(3)that the project is authorized under the NWP with specific modifications or conditions. Where the District Engineer determines that mitigation is required to ensure no more than minimal adverse effects occur to the aquatic environment,the activity will be authorized within the 45-day PCN period. The authorization will include the necessary conceptual or specific mitigation or a requirement that the applicant submit a mitigation proposal that would reduce the adverse effects on the aquatic environment to the minimal level. When conceptual mitigation is included, or a mitigation plan is required under item(2) above, no work in waters of the US will occur until the District Engineer has approved a specific mitigation plan. (e)Agency Coordination:The District Engineer will consider any comments from Federal and state agencies concerning the proposed activity's compliance with the terms and conditions of the NWPs and the need for mitigation to reduce the project's adverse environmental effects to a minimal level. • 5 For activities requiring notification to the District Engineer that result in the loss of greater than 'A-acre of waters of the US,the District Engineer will provide immediately(e.g., via facsimile transmission, overnight mail, or other expeditious manner) a copy to the appropriate Federal or state offices(USFWS, state natural resource or water quality agency, EPA, State Historic Preservation Officer(SHPO),and, if appropriate, the NMFS). With the exception of NWP 37,these agencies will then have 10 calendar days from the date the material is transmitted to telephone or fax the District Engineer notice that they intend to provide substantive, site-specific comments. If so contacted by an agency, the District Engineer will wait an additional 15 calendar days before making a decision on the notification. The District Engineer will fully consider agency comments received within the specified time frame,but will provide no response to the resource agency,except as provided below. The District Engineer will indicate in the administrative record associated with each notification that the resource agencies'concerns were considered. As required by Section 305(b)(4)(B)of the Magnuson-Stevens Fishery Conservation and Management Act, the District Engineer will provide a response to NMFS within 30 days of receipt of any Essential Fish Habitat conservation recommendations. Applicants are encouraged to provide the Corps multiple copies of notifications to expedite agency notification. (f)Wetland Delineations: Wetland delineations must be prepared in accordance with the current method rapired by the Corps(For NWP 29 see paragraph(b)(9)(iii)for parcels less than 1/4-acre in size). The permittee may ask the Corps to delineate the special aquatic site. There may be some delay if the Corps does the delineation. Furthermore, the 45-day period will not start until the wetland delineation has been completed and submitted to the Corps, where appropriate. 14. Compliance Certification. Every permittee who has received NWP verification from the Corps will submit a signed certification regarding the completed work and any required mitigation. The certification will be forwarded by the Corps with the authorization letter and will include: (a)A statement that the authorized work was done in accordance with the Corps authorization,including any general or specific conditions; (b)A statement that any required mitigation was completed in accordance with the permit conditions; and(c)The signature of the permittee certifying the completion of the work and mitigation. • 15. Use of Multiple Nationwide Permits. The use of more than one NWP for a single and complete project is prohibited, except when the acreage loss of waters of the US authorized by the NWPs does not exceed the acreage limit of the NWP with the highest specified acreage limit(e.g. if a road crossing over tidal waters is constructed under NWP 14,with associated bank stabilization authorized by NWP 13, the maximum acreage loss of waters of the US for the total project cannot exceed 1/3-acre). 16. Water Supply Intakes. No activity, including structures and work in navigable waters of the US or discharges of dredged or fill material, may occur in the proximity of a public water supply intake except where the activity is for repair of the public water supply intake structures or adjacent bank stabilization. 17. Shellfish Beds. No activity, including structures and work in navigable waters of the US or discharges of dredged or fill material,may occur in areas of concentrated shellfish populations, unless the activity is directly related to a shellfish harvesting activity authorized by NWP 4. 18. Suitable Material. No activity, including structures and work in navigable waters of the US or discharges of dredged or fill material, may consist of unsuitable material(e.g.,trash, debris,car bodies,asphalt, etc.) and material used for construction or discharged must be free from toxic pollutants in toxic amounts(see Section 307 of the CWA). 19. Mitigation. The District Engineer will consider the factors discussed below when determining the acceptability of appropriate and practicable mitigation necessary to offset adverse effects on the aquatic environment that are more than minimal. (a)The project must be designed and constructed to avoid and minimize adverse effects to waters of the US to the maximum extent practicable at the project site(i.e., on site). (b) Mitigation in all its forms(avoiding, minimizing, rectifying, reducing or compensating) will be required to the extent necessary to ensure that the adverse effects to the aquatic environment are minimal. (c) Compensatory mitigation at a minimum one-for-one ratio will be required for all wetland impacts requiring a PCN, unless the District Engineer determines in writing that some other form of mitigation would beinore 6 environmentally appropriate and provides a project-specific waiver of this requirement. Consistent with National policy,the District Engineer will establish a preference for restoration of wetlands as compensatory mitigation,with preservation used only in exceptional circumstances. (d) Compensatory mitigation(i.e.,replacement or substitution of aquatic resources for those impacted) will not be used to increase the acreage losses allowed by the acreage limits of some of the NWPs. For example, 1/4-acre of wetlands cannot be created to change a'/4-acre loss of wetlands to a'/z-acre loss associated with NWP 39 verification. However, %-acre of created wetlands can be used to reduce the impacts of a'.!-acre loss of wetlands to the minimum impact level in order to meet the minimal impact requirement associated with NWPs. (e)To be practicable,the mitigation must be available and capable of being done considering costs, existing technology,and logistics in light of the overall project purposes. Examples of mitigation that may be appropriate and practicable include,but are not limited to:reducing the size of the project;establishing and maintaining wetland or upland vegetated buffers to protect open waters such as streams; and replacing losses of aquatic resource functions and values by creating,restoring,enhancing, or preserving similar functions and values,preferably in the same watershed. (f)Compensatory mitigation plans for projects in or near streams or other open waters will normally include a requirement for the establishment,maintenance,and legal protection(e.g., easements,deed restrictions) of vegetated buffers to open waters. In many cases,vegetated buffers will be the only compensatory mitigation required. Vegetated buffers should consist of native species. The width of the vegetated buffers required will address documented water quality or aquatic habitat loss concerns. Normally,the vegetated buffer will be 25 to 50 feet wide on each side of the stream,but the District Engineers may require slightly wider vegetated buffers to address documented water quality or habitat loss concerns. Where both wetlands and open waters exist on the project site, the Corps will determine the appropriate compensatory mitigation(e.g., stream buffers or wetlands compensation) based on what is best for the aquatic environment on a watershed basis. In cases where vegetated buffers are determined to be the most appropriate form of compensatory mitigation,the District Engineer may waive or reduce the requirement to provide wetland compensatory mitigation for wetland impacts. (g)Compensatory mitigation proposals submitted with the "notification"may be either conceptual or detailed. If conceptual plans are approved under the verification,then the Corps will condition the verification to require detailed plans be submitted and approved by the Corps prior to construction of the authorized activity in waters of the US. (h)Permittees may propose the use of mitigation banks,in-lieu fee arrangements or separate activity-specific compensatory mitigation. In all cases that require compensatory mitigation,the mitigation provisions will specify the party responsible for accomplishing and/or complying with the mitigation plan. 20. pawning Areas. Activities, including structures and work in navigable waters of the US or discharges of dredged or fill material, in spawning areas during spawning seasons must be avoided to the maximum extent practicable. Activities that result in the physical destruction(e.g.,excavate, fill, or smother downstream by substantial turbidity) of an important spawning area are not authorized. • 21. Management of Water Flows. To the maximum extent practicable,the activity must be designed to maintain preconstruction downstream flow conditions(e.g.,location, capacity,and flow rates). Furthermore,the activity must not permanently restrict or impede the passage of normal or expected high flows(unless the primary purpose of the fill is to impound waters)and the structure or discharge of dredged or fill material must withstand expected high flows. The activity must,to the maximum extent practicable,provide for retaining excess flows from the site, provide for maintaining surface flow rates from the site similar to preconstruction conditions, and provide for not increasing water flows from the project site,relocating water,or redirecting water flow beyond preconstruction conditions. Stream channelizing will be reduced to the minimal amount necessary, and the activity must,to the maximum extent practicable,reduce adverse effects such as flooding or erosion downstream and upstream of the project site,unless the activity is part of a larger system designed to manage water flows. In most cases, it will not be a requirement to conduct detailed studies and monitoring of water flow. This condition is only applicable to projects that have the potential to affect waterflows. While appropriate measures must be taken,it is not necessary to conduct detailed studies to identify such measures or require monitoring to ensure their effectiveness. Normally,the Corps will defer to state and local authorities regarding management of water flow, 7 22. Adverse Effects Front Impoundments. If the activity creates an impoundment of water, adverse effects to the aquatic system due to the acceleration of the passage of water, and/or the restricting its flow shall be minimized to the maximum extent practicable. This includes structures and work in navigable waters of the US,or discharges of dredged or fill material. 23. Waterfowl Breeding Areas. Activities, including structures and work in navigable wafers of the US or discharges of dredged or fill material, into breeding areas for migratory waterfowl must be avoided to the maximum extent practicable. 24. Removal of Temporary Fills. Any temporary fills must be removed in their entirety and the affected areas returned to their preexisting elevation. 25. Designated Critical Resource Waters. Critical resource waters include,NOAA-designated marine sanctuaries, National Estuarine Research Reserves,National Wild and Scenic Rivers,critical habitat for Federally listed threatened and endangered species,coral reefs,state natural heritage sites, and outstanding national resource waters or other waters officially designated by a state as having particular environmental or ecological significance and identified by the District Engineer after notice and opportunity for public comment. The District Engineer may also designate additional critical resource waters after notice and opportunity for comment. (a) Except as noted below, discharges of dredged or fill material into waters of the US are not authorized by NWPs 7, 12, 14, 16, 17, 21,29,31,35,39,40,42,43,and 44 for any activity within,or directly affecting, critical resource waters, including wetlands adjacent to such waters. Discharges of dredged or fill materials into waters of the US may be authorized by the above NWPs in National Wild and Scenic Rivers if the activity complies with General Condition 7. Further,such discharges may be authorized in designated critical habitat for Federally listed threatened or endangered species if the activity complies with General Condition 11 and the USFWS or the NMFS has concurred in a determination of compliance with this condition. (b)For NWPs 3, 8, 10, 13, 15, 18, 19,22,23, 25,27, 28, 30,33,34, 36,37,and 38,notification is required in accordance with General Condition 13,for any activity proposed in the designated critical resource waters including wetlands adjacent to those waters. The District Engineer may authorize activities under these NWPs only after it is determined that the impacts to the critical resource waters will be no more than minimal 26. Fills Within 100-Year Floodplains. For purposes of this General Condition, 100-year flo4plains will be identified through the existing Federal Emergency Management Agency's(FEMA) Flood Insurance Rate Maps or FEMA-approved local floodplain maps. (a)Discharges in Floodplain;Below Headwaters. Discharges of dredged or fill material into waters of the US within the mapped 100-year floodplain,below headwaters(i.e. five cfs),resulting in permanent above-grade fills, are not authorized by NWPs 39,40,42,43, and 44. (b)Discharges in Floodway;Above Headwaters. Discharges of dredged or fill material into waters of the US within the FEMA or locally mapped floodway,resulting in permanent above-grade fills, are not authorized by NWPs 39,40,42,and 44. (c)The permittee must comply with any applicable FEMA-approved state or local floodplain management requirements. 27. Construction Period. For activities that have not been verified by the Corps and the project was commenced or under contract to commence by the expiration date of the NWP(or modification or revocation date),the work must be completed within 12-months after such date(including any modification that affects the project). For activities that have been verified and the project was commenced or under contract to commence within the verification period,the work must be.completed by the date determined by the Corps. For projects that have been verified by the Corps, an extension of a Corps approved completion date may requested. This request must be submitted at least one month before the previously approved completion date. • 8 MITIGATION SPECIAL CONDITIONS Grading and Implementation 1. The peimittee shall ensure that the restoration and enhancement design and implementation adheres to the proposed grading and planting scheme submitted to the Corps (see Figures 7-11, Enclosure 1). 2. Restoration and enhancement shall be completed within the first growing season after installation of the sewer line. Vegetation 3. Coverage of planted woody species or naturally recruited, native woody species shall be at least 60%by the fifth year following construction in scrub-shrub and forested portions of the enhancement site. 4. Coverage by native emergent species shall be at least 80%by the fifth year following the planting in herbacious portions of the enhancement site. 5. Vegetative monitoring will be conducted using line-intercept, quadrat, or other appropriate methodology, depending on site conditions. The pennittee shall specify the methodology used during the site inspection. The same methodology shall be used throughout the monitoring period. 6. All sampling locations shall be clearly identified on 8.5 by 11-inch drawings and included in the annual monitoring report. 7. Invasive, non-native species shall not exceed 15% coverage at any time during the monitoring period. 8. The permittee shall establish a minimum of three fixed photo documentation locations to provide a visual record of structural changes during the monitoring period. Each photo documentation location shall be clearly identified on 8.5 by 11-inch drawings and submitted in each annual monitoring report. Monitoring 9. An as-built report of the enhancement site shall be submitted to the Corps within 60 days of completion of grading and planting. This report shall include photographs taken before and after grading of the site,planting, or other substantial activities. 10. Monitoring shall begin immediately after the planting has been accomplished and continue for a period of 5 years. The monitoring period will start when the permittee has demonstrated that initial plantings have been accomplished. The monitoring period may be extended if success criteria are not achieved. 11. Monitoring shall take place between April —June of each year. 12. An annual monitoring report that summarizes the above documentation shall be submitted to the Corps by September 30 of each monitoring year. This monitoring report will document the vegetation and the hydrology of the enhancement area. The monitoring report will include, but not be limited to: a. Permit number and NaMe of permittee; b. Project name and location; c. Vegetation monitoring data(i.e. plant counts); E kick 14 d. Photo documentation of the enhancement site; e. Locations of sample collection point or transects; f. Visual observations of the enhancement site, including observations on invasive/noxious plant growth within the wetland mitigation and buffer area and wildlife usage of the area; and g. Description of all activities that have occurred on the project site during the previous monitoring year. 13 The monitoring report will also include an analysis of the enhancement area and a determination as to whether the wetlands are achieving success criteria. 14. Annual monitoring reports shall be submitted to: U.S. Army Corps of Engineers Regulatory Branch (CENWP-OP-G) Compliance & Enforcement (Washington County—Corps ID No. 200300241) P.O. Box 2946 Portland, Oregon 97208 Contingencies 15. In the event that mitigation success criteria are not met during the monitoring period, the permittee shall submit a contingency plan to the Corps. The contingency plan shall be approved by the Corps prior to implementation. 2. In-Water Work Periods- All in-water work, including temporary fills or structures, may be undertaken only during the time periods recommended by Oregon Department of Fish and Wildlife (ODFW) for in-water work specified in the most current version of Oregon Guidelines for Timing of hi-WaterWork to Protect Fish and Wildlife Resources. An exception is allowed only with specific approval from the USACE after consultation with ODFW or National Marine Fisheries Service (NMFS). On tribal lands, the USACE will coordinate exceptions with the U.S. Environmental Agency(USEPA). 3. Riparian Vegetation Protection and Restoration-Riparian,wetland, and shoreline vegetation in the project area must be protected from disturbance to the maximum extent possible and be restored and enhanced when unavoidably disturbed due to activities associated with the authorized work. All damaged or destroyed vegetation must be replaced with native plant materials. The standard for success is 75% areal coverage after the fifth growing season for native plant species that replace the habitat type lost or damaged. Planted areas must be temporarily fenced, or otherwise protected from damage, until the vegetation is established. Project sites must be revegetated to the extent possible up to the bankfull stage or line of non- aquatic vegetation,whichever is greater. When any wetland areas are adversely affected, revegetation must extend to the upland limits of the wetland area. 4. Stormwater- Stormwater from any authorized activity, conveyed or discharged to a water of the state, must be treated by a facility specifically designed to remove stormwater contaminants before entering streams, wetlands, or other waters of the state,including mitigation wetlands, so as to minimize pollutants entering those water bodies. 5. Bank Stabilization- The linear threshold for bank stabilization projects under any nationwide is 250 feet. All projects exceeding the threshold require individual water quality certification. a. Bioengineering is required: Native plantings, such as willow saplings, must be incorporated into stream bank stabilization structures in order to provide bank erosion protection, variable habitat for wildlife, and shade. [See the Division of State Lands Guidelines On Riparian Restoration Bioeng'neering, included in their 1996 Erosion Control General Authorization.] b. The project must not include retaining walls,bulkheads, gabions or similar vertical structures. Oregon Department of Environmental Quality Conditions for Compliance with Section 401 of the Clean Water Act 1. Turbidity/Erosion Controls-The permittee shall ensure the authorized work does not cause the turbidity of affected waters to exceed 10% over natural background turbidity 100 feet downstream from the activity causing the turbidity. For projects proposed in areas with no discernible gradient break(gradient of 2% or less), monitoring must be done at 4 hour intervals and the turbidity standard may be exceeded for a maximum of one monitoring interval per 24 hour work period provided all practicable control measures have been implemented. This turbidity standard exceedance interval applies only to coastal lowlands and floodplains, valley bottoms and other low-lying and/or relatively flat land. For projects in all other areas, the turbidity standard may be exceeded for a maximum of 2 hours (limited duration)provided all practicable erosion control measures have been implemented. Turbidity must be monitored during active in-water work periods. Monitoring points must be at an undisturbed site (representative background) 100 feet upstream from the turbidity causing activity (i.e., fill or discharge point), 100 feet downstream from the fill point, and at the point of fill. A turbidimeter is recommended,however, visual gauging is acceptable. Turbidity that is visible over background is considered to exceed the standard. Practicable erosion control measures must be implemented. Such measures must include,but are not limited to, the following: a. Place fill in the water using methods that avoid disturbance to the maximum practicable extent (e.g. placing fill with a machine rather than end-dumping from a truck). b. Prevent all construction materials and debris from entering waterway; c. Use filter bags, sediment fences, sediment traps or catch basins, silt curtains, leave strips or berms, Jersey barriers, sand bags, or other measures sufficient to prevent movement of soil; d. Use impervious materials to cover stockpiles when unattended or during rain event; e. Erosion control measures shall be inspected and maintained daily to ensure their continued effectiveness; f. No heavy machinery in a wetland or other waterway; g. Use a gravel staging area and construction access; h. Fence off planted areas to protect from disturbance and/or erosion; and i. Flag or fence off wetlands adjacent to the construction area. Turbidity must be measured(or visually assessed)and recorded at the designated monitoring interval prescribed above during periods of active construction. The designated person attending the monitoring equipment shall be responsible for notifying the project foreman of any exceedance of the turbidity standard. If a 10%exceedance of the background level occurs at 100 feet below the project site,modify the activity causing the problem and continue to monitor at the proper interval. If exceedances occur with two consecutive measurements the activity causing the turbidity must be stopped until the problem is resolved. Compliance Certification Project County: (it Permit Number: 22 7004,9F. Date of Issuance: Name of Permittee: I hereby certify that the work authorized by the above referenced permit, has been completed in accordance with the terms and conditions of the said permit, and that required mitigation was completed in accordance with the permit conditions, except as described below. Signature of Permittee Eric! 6 U . orn --. .' cpc/-4 71 Division State Lands _ 775 Summer Street NE' Suite lOO Y<� Salem, OK973Ol 97301-1279 T�eouu,,n.x"/vogo»u'�ovro^', ^\�\y^~ 5Q3) 378'3805 � . *� ; ` FAX (503) 378-4844 June 102003 c\C\ \�Jr ^��'' www.oregonstatelands.us. \� - � ,�� ` ^ �� ' State Land Board JD03/30230 Theodore R.Th J K \ ki ��|TY (JFT|(�A|�O ,ouon�os ATTN: VANNIE NGUYEN Governor 13125 SW HALL BLVD Bill Bradbury TIGARD OR 97223 Secretary of State RE: []SL Removal/Fill Permit Application No. 30238-NF Randall Edwards T01S RO1W, SectionO2 TaxL�� 3O0 ' ' State Treasurer Tigard, Washington County Tigard Library Site Dear Ms. Nguyen: The Division's 45-day public review period has closed for the above-referenced permit application. Attached is a copy of all written comments received by the Division. I would ask that any responses you wish to make be submitted in writing within 25 days of the date of this letter to allow adequate time for review prior to making our permit decision. If you wish to provide a response that will take more than 25 days to prepare, please inform me as soon as possible of the anticipated submittal date. Please be aware that the Department of Environmental Quality has 75 days to submit comments on your application (ORS 186.825(9)(b)\. Should the Department submit comments requiring your response, I will contact you immediately. A permit decision will be rendered on your application by July 20, 2003 unless you otherwise request to extend that deadline. Please call me at extension 244 if you have any questions on this transmittal. Sincerely, Co|inK8aoLansn Natural Resource Coordinator Field Operations—Western Region Cm:nw Enclosures Copy to: Kathryn Harris, Corps of Engineers Greg Kurahashi, Kurahashi & Associates J:\Cuvn000\wouxinumo\Pub_App\aozon-RFxommonm.goc ) Division of State Lands FCEIVED 775 Summer Street NE, Salem, OR 97301-1279 MAY 1 6 2003 lit 503-378-3805 or 503-378-4844 FAX STATE PARKS &DSL App.30238-RF Ellin"OFF�STATL TION OF STATE LANDS RECREATION DEPT R EWWAV1 RWAY PROJECT PERMIT REVIEW 1003 MAY 211 JIBS IVTICE IS NOT A PERMIT Notice of Pet nut Application Available for Review The referenced application has been received and is available for review at www.statelandsonline.com/. Go to the county of your project and then click on the application number. After reviewing the application, go back to the county page, then to the Comments column on the far right, and click on"Add" to enter your comments. If you wish to make written comment on the proposed project, please use this form or attach comments and return it to us. This form is a self- addressed mailer for your convenience. Please affix proper postage. General information: Date of Notice: May 15,2003 DSL Coordinator: Colin MacLaren x 244 County: Washington Corps Coordinator: Kathryn Harris Applicant: City of Tigard Application involves: ❑ Structure • Fill •Removal 0 Riprap 0 Scenic Waterway ■Essential Salmonid Habitat ■ Wetlands: Tidal X Freshwater 0 Wetland Compensatory Mitigation 0 Willamette Greenway 0 LWRMP PLEASE MARK BOXES BELOW AND,IF NEEDED,SUBMIT WRITTEN COMMENTS IN THE SPACE PROVIDED OR ATTACH ADDITIONAL SHEETS.NO RESPONSE BY THE DUE DATE IS PRESUMED TO MEAN "NO COMMENT." I have reviewed the information and offer the following comments: ❑ A permit is required by this agency. O We do not believe the project would have an adverse effect. ❑ We believe the effects of the project,although measurable,would be acceptable. O We believe the project would be acceptable if methods of construction or design were altered as listed below ❑ We would attend a conference with the applicant to seek project alternatives. • ❑ This project will adversely affect Threatened and Endangered Species.(Please explain below.) The project is unacceptable as proposed.(Please explain below.) O We have no comment. PLEASE F In order to assess the potential effect of this application to known LANDS BY: June 9, 2003 cultural resources, a description of the project and a map showing COMMENTS: the project in relation to its location(township,range and section) needs to be submitted. Please forward all appropriate documents so that this application can be reviewed. c� Signed: ( —f�iu-� Date: A� 4 3 2003 ■ODFW-GRIMES ■DLCD* HALLYBURTON •CITY OF Tigard ■NMFS ■AERONAUTICS 'MARINE BOARD •LYN MATTEI •USFW-MARSHALL ■DEQ ■WATERMASTER tt18 •USA(Clean Water Services) ■CORPS-HARRIS ■HIGHWAY ■SWCD-WASHINGTON ■ADJ.PROP.OWNER(3) (If Corps PN) 0 ECONOMIC DEVELOPMENT HISTORIC PRES ■WASHINGTON COUNTY LOCAL COORDINATOR J:\_Forrns\Electonic PRP\Washington Primary SAC.DOC 4 .1-11.V 101.\-111. \J1 OLULt., J-”.1.11410 4-1.1J1J11.1...:11.101.1 Page 1 of 1 it HOME BROWSE SEARCH CONTACT US • 7." '4...4N -4 4Ezt L-• • May 19,2003 NAME: R. Bewersdorff CITY:Tigard STATE:OR AGENCY: City of Tigard COMMENTS: —Sensitive Lands permit required. Sensitive Lands approval received from City Hearings Officer 4-29-03. it HOME BROWSE SEARCH CONTACT US hap://www.statelandsonline.comidsp_comrnent list.cfrn?i d=30238 5/19/03 /./ ~/�Z ° � � HttU � mm � =— ' «^ ' 4 ^ n n JOINT fforZi- �, .a. , r . PERMIT APPLICATION FORM + ��. . ^-,^° ` ' '~�'" US Ar -� Corps THIS PERMIT WILL MEET THE REQUIREMENTS OF BOTH AGENCIES • of Engineers iaa9 ' Portland District AGENCIES WILL ASSIGN NUMBERS Corps Action ID Number Oregon Division of State Lands Number SEND ONE SIGNED COPY OF YOUR APPLICATION TO EACH AGENCY District Engineer State of Oregon ATTN: CENPP-CO-GP Division of State Lands POBox 2Q4G 775 Summer Street NE Portland, OR 87208'2946 Salem, OR 97301-1279 (503) 326-7730 (503) 378-3805 ©Applicant Name Vannie T. Nguyen business phone# 503-839-4171 and Address City of Tigard home phone# 13125 SW Hall Boulevard FAX# 503-624-0752 Tigard, Oregon 97223 0Cof\pp|ioant Michele Eccleston business phone# (503) 570-0800 O Authorized Agent Pacific Habitat Services, Inc. home phone# • Contractor 9450 SW Commerce Circle, Suite 180 FAX# (503) 570-0855 Name and Address Wilsonville, OR 97070 Property Owner business phone# (if different than applicant) home phone# Name and Address • FAX# 0 PROJECT LOCATION Street, Road, or other descriptive location Legal Description Quarter Section Township Range East of SW Hall Boulevard,justnorthofReginoLane SE 2 2 South 2 West In or near(City or Town) County Tax Map# Tax Lot# Tigard Washington 2G22OO 300 &600 & 1100 Waterway River Mile Latitude Longitude FannoCreek N/A 45°'25'22" 122o454G. . Is consent to enter property granted to the Corps and the Division of State Lands? • Yes 0 No 0 PROPOSED PROJECT INFORMATION Activity Type: • Fill 0 Excavation (removal) 0 In-Water Structure 0 Maintain/Repair on Existing Structure Brief Description: Proposed bioswale and culvert extension to accommodate the widening of Hall Boulevard Fill will involve cubic yards annually and/or cubic yards for the total project 3.66 cubic yards in a wetland or below the ordinary high water or high tide line Fill will be 0Riprap • Rock OGrova| 0Smnd 0Si{t 0C\ay 0Organ)co • Other Compacted soil fill Fill Impact Area is 0.0008 Acres; 8.5 feet length; 7.5 feet width; 4 feet depth Removal will involve cubic yards annually and/or cubic yards for the total project 1 cubic yards below the ordinary high water or high tide line Removal will be 0 Riprap 0 Rock • Gravel • Sand 0 Silt {) Clay • Organics 0 Other Removal Impact Area is 0.0005 Acres; 5 length; 4 width; 1 depth is the Disposal area Upland? • Yes [) No Wetland /Waterway? 0Yao • No Are you aware of any Endangered Species on the project site? [) Yes • No If Yes, please explain in the project Are you aware of any Cultural Resources on the project site? 0 Yes • No description (on page 2block 4). Is the project site near a Wild and Scenic River? ' ) Yes • No 0 PROPOSED PROJECT PURPOSE & DESCRIPTION Project Purpose and Need: SEE ATTACHED Project Description: SEE ATTACHED How many project drawing sheets are included with this application? 8 NOTE: A complete application must include drawings and a location map submitted on separate 8 1/2 x 11 sheets. WiUany material, construction debris, runoff, etc. Enter awetland nrwaterway? 0Yes • No If yes, described the type of discharge and show the discharge location on the site plan. Estimated Start Date September 1. 2O03 Estimated Completion Date September 30, 2003 0� PROJECT IMPACTS AND ALTERNATIVES Describe alternative sites and project designs that were considered to avoid impacts to the waterway or wetland. There were no viable alternatives for the culvert replacement. The culvert replacement will be beneficial to Pinebrook Creek as the existing culvert will be replaced with a fish friendly culvert and an additional area of the channel will be opened as a result of the pjecL Described what measures you will use (before and after construction) to minimize impacts to the waterway or wetland. Erosion control measures including silt fences, biobaga, straw wattles, catch basin silt sacs, straw nmu|oh, and seeding, will be installed as necessary to minimize sediment movement through the construction site. In addition, the culvert extension will be completed within the Oregon Department of Fish and VVildlife's in-water work period, which is June 1 to September 30 when fewer rain events are anticipated. NOTE: If necessary, use additional sheets. A� ADDITIONAL INFORMATION Adjoining Property Owners and Their Addresses and Phone Numbers Edgar Solis Carol and Dernell Zander 13S358VVHall Boulevard 13700 SW Hall Boulevard Tigard, Oregon 97223 Tigard, Oregon 97223 Has the proposed activity or any related activity received the attention of the Corps of Engineers or the State of Oregon in the past, e.g. wetland delineation, violation, permit, lease request, etc.? •Yes 0 No A joint permit application was previously submitted for this project in May 2003. A permit was received from the Corps; however, the DSL did not issue a permit because the proposed culvert under Hall Boulevard was not approved by Oregon Department of Fish and Wildlife. The existing culvert was considered a fish passage barrier and the design has been revised to replace the culvert with one that meets requirements for fish passage. If yes, what identification number(s)were assigned by the respective agencies: Corps# 2003'00241 OO CITY/COUNTY PLANNING DEPARTMENT AFFIDAVIT (TO BE COMPLETED BY LOCAL PLANNING OFFICIAL) O This project is not regulated by the local comprehensive plan and zoning ordinance. O This project has been reviewed and is consistent with the local comprehensive plan and zoning ordinance. O This project has been reviewed and is not consistent with the local comprehensive plan and zoning ordinance. O Consistency of this project with the local planning ordinance cannot be determined until the following local approval(s) are obtained: 0 Conditional Use Approval 0 Development Permit O Plan Amendment 0 Zone Change Other i ogre r 0%1 Nom f An application has 0 as not been made for local approvals checked above. .70 m —rr-co =3'O3 Signature(of local p anning official) Title City/County Date ® COASTAL ZONE CERTIFICATION If the proposed activity described in your permit application is within the Oregon coastal zone,the following certification is required before your application can be processed.A public notice will be issued with the certification statement which will be forwarded to the Oregon Department of Land Conservation and Development(DLCD)for its concurrence or objection. For additional information on the Oregon Coastal Zone Management Program, contact the department at 1175 Court Street NE, Salem, Oregon 97310 or call 503-373-0050. CERTIFICATION STATEMENT I certify that, to the best of my knowledge and belief,the proposed activity described in this application complies with the approved Oregon Coastal Management Program and will be completed in a manner consistent with the program. Print/Type Name Title Applicant Signature Date ® SIGNATURE FOR JOINT APPLICATION (REQUIRED) Application is hereby made for the activities described herein. I certify that I am familiar with the information contained in the application,and to the best of my knowledge and belief,this information is true, complete, and accurate. I further certify that I possess the authority including the necessary requisite property interest to undertake the proposed activities. I understand that the granting of other permits by local, county, state or federal agencies does not release me from the requirement of obtaining the permits requested before commencing the project. I understand that local permits may be required before the state removal-fill permit is issued. I understand that payment of the required state processing fee does not guarantee permit issuance. Vannie T. Nguyen Project Manager Print/Type Name (co-applicant) Title c� Applicant Signature (co-applicant) Datt J e I certify that I may act as the duly authorized agent of the applicant. / r/ ,(_:A2-=1-//)- :z_s j',;%: � : : i'iJ;Z; 'Scc", Print/Type Name Title • / / Authorized Agent yS gnatuie Date SUPPLEMENTAL WETLAND IMPACT INFORMATION* (For Wetland Fills Only) Site Conditions of impact area Impact area is 0 Ocean 0 Estuary 0 River 0 Lake • Stream 0Fneshwater Wetland Note: Estuarian Resource Replacement is required by state law for projects involving intertidal or tidal marsh alterations. A separate Wetlands Resource Compensation Plan may be appended to the application. Has a wetland delineation been completed for this site? •Yes 0 No If yes, by whom: Allison Rhea at Rhea Environmental Consulting delineated Pinebrook Creek and manmade pond located on the Fanno Pointe property. A wetland delineation report was submitted to the Oregon Division of State Lands in February 2003 (reference DSL-2003-0024); however, does not address the open channel area between the existing 24-inch and 18- inch culverts. Describe the existing Physical and biological character of the wetlandlwaterway site by area and type of resource (use separate sheets and photos, if necessary) The channel of Pinebrook Creek approximately 20 feet west of Hall Boulevard is approximately 4 feet wide and 2.5 feet deep. There are no adjacent wetlands to the tributary within the pject area. The channel in the pject area, east of Hall Boulevard, is located between the existing 24-inch and 18-inch culverts. The gap in between the culverts is 3.5 wide, 3.5 feet long, and 4 feet deep. This area is devoid of aquatic vegetation and the channel bottom is rock(see attached photo). The culvert extension will require the placement of 1.81 cubic yards of fill in this portion of the creek channel and abandoning a 4-inch pipe that flows to a man-made pond located on the Fanno Pointe property. Pinebrook Creek daylights approximately 62 feet east of Hall Boulevard and is 4 feet wide and 2 feet deep. The creek is in an open channel for approximately 60 feet until it is piped into a 12-inch culvert that continues in a northeasterly direction until it daylights again. The second open channel segment is approximately 25 feet long, 10 feet wide, and 2 feet deep. The creek continues east and downslope into a manmade pond connected to Fanno Creek by a narrow 5- inchohanne|. The manmade pond located on the Fanno Pointe property was constructed in both upland and hydric soils. The hydrology is supported by flow diverted from Pinebrook Creek into a 4-inch pipe located in the gap between the existing 24-inch and 18-inch culverts. Two small plastic pipes discharge into the southwestern corner of the pond, with a drain and subsurface discharge pipe located in the northeastern corner of the pond that discharges into the southern end of the second open channel segment of Pinebrook Creek. The pond appears to be approximately 2.5 feet deep with a layer of accumulated sediments at the bottom. The pond appears to have been installed for on-site irrigation needs. The source of hydrology to the pond will be abandoned as a result of the proposed culvert extension. Resources Replacement Mitigation Describe measures to be taken to replace unavoidably impacted wetland resources Mitigation measures include the excavation of 44 square feet of upland between the end of the culvert extension and where the channel first daylights. The excavation will be the width of Pinebrook Creek (approximately 4 feet) and seeded with a native herbaceous seed mix. Himalayan blackberry along the top of the bank of the tributary in the project area has been removed. No further mitigation along Pinebrook Creek is proposed at this time because the creek and the manmade pond, east of Hall Boulevard, will be enhanced per Clean Water Services requirements for the Fanno Pointe development. No plans for the enhancement of this system have been developed at this time. Although no mitigation is required for the construction of the proposed bioswale, the Himalayan blackberry (Rubus discolor) along the bank of Fanno Creek, in the vicinity of the outfall structure, will be removed. The bank will be stabilized with a geo-technical material and planted with native grasses, red-osier dogwood (Cornus stolonifera), and Sitka willow (Salix sitchensis) stakes on 1-foot spacings to minimize erosion *Because this information is not necessary for a complete application, you may submit this sheet and other environmental information after submitting your application. WD PROPOSED PROJECT PURPOSE & DESCRIPTION Project Purpose and Need: SW Hall Boulevard will be widened as required by the City of Tigard and Oregon Department of Transportation (ODOT) to accommodate the new access roads leading to the Fanno Pointe development(currently under construction), and the proposed Tigard Library site. SW Hall Boulevard is an ODOT Facility and the state's current improvement standards for the road require a width of 50 feet from curb to curb. The road widening will require the replacement of the existing 24-inch culvert under Hall Boulevard to accommodate standard width improvements of the roadway, landscaping areas, and sidewalk as required by ODOT. A new 122-foot culvert will be installed to allow for fish passage as required by the Oregon Department of Fish and Wildlife regulations. A bioswale will be constructed on the north end of the prject area to collect and treat stormwater runoff from the increased impervious surface and existing impervious areas currently untreated along SW Hall Boulevard. Project Description: The road widening will require the replacement of the existing 24-inch culvert pipe under Hall Boulevard. The pipe contains the flow of Pinebrook Creek, a intermittent tributary to Fanno Creek. The existing 24-inch pipe ends east of the road and there is a 3.5-foot gap before the creek flows into an 18-inch culvert pipe and a 4-inch pipe. The gap in the culvert connection is approximately 4 feet deep, 3.5 feet in length, and 3.5 feet wide. The 18-inch pipe continues east for approximately 62 feet where the creek daylights. The 4-inch pipe in the gap flows to a manmade pond located on the Fanno Pointe property. A 122-foot aluminum galvanized 57" x 38" pipe arch culvert will be installed under Hall Boulevard. The culvert will extend approximately 50 feet further than the existing culvert on the east side, and 5 feet further to the west. Rock material will be placed in the culvert to create a natural channel bottom for fish. Larger rocks approximately 1-foot in diameter, known as"fish rocks," will also be placed in the bottom of the culvert to create low flow pools and meanders in the channel. The culvert will allow for fish passage in the tributary as it has been designed to accommodate the average water velocity at high flow design discharge required for juvenile fish passage. The water will flow though the channel at a flow rate of 8.1 cubic feet per second for a 2-year rain event. The existing 24-inch pipe, east of Hall Boulevard, will end short of the daylihted section of the creek. An upland area of 44 cubic yards will be removed and the open channel will be lengthened. The culvert extension will require the placement of 1.81 cubic yards of fill in the creek channel and abandoning a 4-inch pipe that flows to a man-made pond. The increase of impervious surface as a result of the road widening will be 14,768 square feet. The construction of a bioswale located north of the Tigard Library, east of Hall Boulevard, and south of Fanno Creek is proposed to collect and treat the increased impervious surface and an additional 10,159 square foot area of existing roadway. The bioswale will be constructed at the top of the bank of Fanno Creek and a 20-foot long header with ten 6-inch pipes will disperse the water down the slopes into the creek. The slope will be armored with a geo-technical material (Curtex Blanket)and planted with a native herbaceous seed mix and willow stakes to minimize erosion. The maximum flow to be discharged from the bioswale is 1.55 cubic feet per second. The estimated increased flow to the creek will be 0.64 cubic feet per second. There are no anticipated impacts to any threatened, endangered, or sensitive species. The proposed bioswale will be constructed along the top of the bank, several feet above the ordinary high water elevation. There are no fish in Pinebrook Creek in the location of the culvert extension. The water source in the creek is stormwater collected from subdivisions west of SW Hall Boulevard. The creek flows through several sections of culverts and into a manmade pond located adjacent to Fanno Creek. 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";*: -/,-,,,v,i:,-'• * :;::*," ' , •--: \, : , - - -- ,,-,/,' :•---/..„4,-..- ----/•:-,--.._---.-.•--kk.:-.' 77.:- , ' : .. -'--_,-, "--•--.:‘‘... . •- --------- ---''----,- / - ,'2 - •.*"--'-.), ,I.,--.::::::: •"/5,•;-,---,-•`-----.':,,,r' ' ‹..t- ‘1%.,..;--,Z ti • .-",1 - - .._,,,.......;-:-- -- -----,-,-7 - ' ,;-" './ ,,-• -1,-:1 le, ..,..;,,..,7i,..,•,,,.,:.. .:.., ::::.-.. ,, .,,,,,,--..,: , ./;!-,,... -1,-- ., ....--,--„,, „. :• - :•,-: , ,1-=. '..,....-"'' .,.. 1- -, , --(„_,.<-.-,i, ..„,..A:..,,,, --, -.---4 -.-.4,----\,..,-- • ---., 'all g **;:‘”‘ /*,,.--, ::',.1--Z-:Z.,),:.-•(7' i '' ..7 ...., 2711 --.",--' :-p,',--` .) ',.. . -:' .:,:•--",'"-'-- ''' `-- - ,:,--:: _-': :-42;-'•Iiiti'''' '''''''/-- ---.) ''' '-----::- ...-'2 i„.-.-.7.-----.:-:-.,-;-: ,..,.; , •::•,•;:..,:.....:.,'-':,:-..-,-c .11,.. _ ,-'---- -- -.-:.--- f----, :-..-:-:-..--f-,......•.....,..,,-;)..,-----' ::,,: . • .• . , , -- - FIGURE 4 project (USGS, I d widening). Boulevard for Hall B°photorevised 198 8/22/03 topography, 1961, generalegon quadrangle, Location and r Beaverton, 0 Services, Inc. pacific Habitat — )1. K 1ccS ( CuIvert Q / ? p ct TL 900 1 1X 56000 J I( n „00 I 1`,'I . _ HALL BLVD. o+ao — "— _ _—._ 1Z 1200 12 ,300 0 u 0) 72 401 __ ________4---rt- � - ---._ F- s+ao 6too _ � -— - —� 7-- ---.----—_ a ria., a o0 LI 7L =i+. " 400 �U .�. -`""£'_-"'++�t "",o"..'• .... � —__~!�� ,�_." -= Location of Cu/vert n 3O° 1 1 a 200 I t* iY -. -+-- 1 1 I n wo R 600 I �- to be 4tended 1 I ,�,/yaw s I — — 1 / ,�,,,, , +�aav wo I TL s00 — FANNO POINTE A"UAWN #°1P DEVELOPMENT i� I i PROPOS D T/GARD '"o"� � Ii1 LIBRARY /TE I I t/ I Approximate Location I of Pro osed Bioswa/e I I 1 LEGEND I I j l l / i-'ice Sidewalk I II 1 I I /Approximate/ApproximateLocat/on / :: Landscaping II 1 ii IofFanno Creek --7 I , I / 1 ` � . i1� ` 0 90 180 960 \ I i SCALE IN FEET FIGURE Location of the Hall Boulevard widening project (base map provided by 2711 2 DeHaas and Associates, 2003). 5/14/03 HS r Pem Pacific Habitat Services,Inc. � _� // I1 i I , . , -,, • D / 1 Existing Sidewalk�1 1 I I I( 1 `,Proposed Sidewalk \` t i I Existing Ri ht-of- al I C , I h � � � I ay III ..-, II �1 ii f i Proposed Right-of-Way / / 1 I wI ( I J) • f` :7 Existing Right-of-Way I I I ao ) I 0 15 30 a0 iy 'i 1 �I '. I I / l ;I SCALE IN FEET I I I � o 44 Cubic Y rds of '�-e o I I Uplane FxcaCated ExistIngi4"�;'ipe}o Open'ate�t r,. to'•ExSeact Sannel t.Install 122'of Aluminized galvanized I Po 1 tc`b�R�rroved I .• r- ' corrugated metal, 57"x 38"pipe arch, Remove Existi ig , tff ' ,1 / - '� < .' 2-2/3"x 1/2"corrugations, 12 gauge 24"Concrete(Culvert ,,, A no � -.--- I\\1/4,_ 1i_ . , 4, _ .::::4, -- Stream Bed 1inno — I \I Ex�st•ngreteCulvert ; l \ to beReeareek QTributar to1 l I •�I ,.., 3.5'by 3.5'ga -in_,J8"and 24"Culverts opo .an' I I _._ ci _ j J 1 (I(il' * 1 / / REGINA LN / (= 1 I rT' ' ///) 1 FIGURE Plan view of the culvert extension for the Hall Blvd. widening project (base 2711 3 map provided by DeHaas and Associates, 2003). 8/25/03 PHS Pacific Habitat Services, Inc. r........................................................................_..........,_........_.._................_ .. _ .,........._._.._.._._............__............._.. ....._........_... ........... no d. tie I a I 770 a i 1 1 '�I J65_...................................' ........_ y y ... ........ ... y 165... a 1„ lil CI1 s1 � l60f / j 'Iso V- _. ..~.__.-___--r 1= .__� r. '. �._ $ I ......... ........... ._155- II IL rso' I a 11/44-1 ..L d��.' h --./--','-' rso a I Scale l� 10'HorizI _ ! 1.... . It I.. i..71 4, - ... 1'. s Vert. i � N i-� _ `�•� e `i.. 745. ........ . ._.., i..... ... ... L.... 1... ...._ ... ...._.......A.. ..... i....... ......._... .. ... _ 145 . 8+40 81-80 9+20 9+60 70+00 70+40 70+80 _ - 71+20 FIGURE Typical cross—section of the culvert extension for the Hall Blvd. widening 2711 / project (base map provided by DeHaas and Associates, 2003). 8/25/03 PHS jai Pacific Habitat Services,Inc. A - B -f— FSH ROCKS -, / ,_ , ,_ft >% C ,, ll ) 77 SECTION A—A las A rX NOTES' 0 ATTEMPT ro MIKE LOW WATER STREAM THREAD THROUGH STMRRATED STREAM BEA 0 PLACE FAH ROCKS AT APPROXIMATE LOCATIONS AS SNOW ro CLASS/100 HELP CREATE LOW PLOW POOLS AND MEIN FIRS. RAVI NAY k moor S7D) v s \\ ) SECTION B—B .4.\\ pass ' r'a.i V \ l a \ ! 14111/41MW 4"' /100 RIM?RUN(0007 S7D) AROUND ETV OF PIE ARCH AT BOTH ENOS MIN. T'WOE///// E x 1'DEEP Ems- xl,t?,d,0 1 RIP—RAP HEAD WALL Ms FIGURE Typical cross—section of the culvert showing material to be placed in the 2711 \ bottom for the Hall Blvd. widening project (base map provided by DeHaas 8/25/03 and Associates, 2003). PHS Pacific Habitat Services,Inc. GENERAL NOTES: I r V „ 1 L- 1 ‘ \ `„``-4 1. Protect all trees on site. 1 ( / I 1 sS. CONSTRUCTION NOTES: 1 M ,�' 1. Existing buildings to be �_ I )`'` � A` \ _r. removed by others. 1 i 32 ( /1 -- 3 "— -e 1 \ r 2• Construct water quality $— `I \ : I /I 1 / `N., '�.�_�t... _ .3. Construct ditch inlet. See y _� j' J Detail B and C. ,,,� Q . . I — /7,1 \ / 22' x 24' `\ 1 / J • Gree Curlex Blanket ?2, 4. Connect to new storm sewer { v I ``' • ' 1 7 -� •e O f Fa n n O k in street. Begin water �1 , r-- . _dg - quality facility bid item. I I l • ,; _- ' GEE e� . 5. Construct inlet flowpad, full cz Q a v ,�` is I ND �e width of channel. �t F�� O . 00/ .t . v, I`� r,'' a • • •• . ALL STRUCTURE----`• .�- 6• Reseed swale after grading. '" Ma X I •• ` Ed e 9f. — •• IE-last See landscape plans. ..------';.-6' , . _ . - 4. 7. Install sedimentary manhole. j o a f' �i ` q See Detail D. Rim= ±145.00, : o_ ` 41 j -----a�� 100' „\c) IE in= 141.23, IE out= { I I """":,,� 141.15 Sump= 134.73. 1 I p ? i • AIII 8. Locate and abandon existing 1`'. 1' 1 r..t I I I -� �+ 10+73 ` s � "� . lop ` � DITCH INLE well with concrete in jE OUT= 141.9{' 66LF 12 "` IE IN=149 accordance with Oregon ! ( " 1 C76-� Iona. �: 11 IE 0 40.35 Water Resources f requirements. (By Others) -. !y� \ I i ‘wri _ o_ 25 50 100 9. Hydroseed any disturbed 'A A. j x.4,7- , -. 2'X6'X18" \\ SCALE IN FEET areas not covered by ! ./�i ,� CLASS 50 RIP RAP landscaping plans. . ." . ! ,-— FIGURE Plan view of the proposed bioswale for the Hall Boulevard widening project 2711 6 (base map provided by DeHaas and Associates, Inc., 2003). 5/14/03 PHS Pacific Habitat Services,Inc. . " I ^ ^ . ( . Ex• � - toles /' {wu � ( P� | | 1148 \ _ | -- 1| i !' / | ww` ` / , ! 1 1144 1 ' (wm ` ----4—__�� | ° 1V �� ----- M | wm l� xn� -- �^"m �"�* --_.„-- � |� wo ea | orn« �u� -- -�-- -- /ro~'C�—,"�a + m� { 5= 0.0244 - /ca \ vm - / | � | � / / | � �� | �� r~ �— cn � i �� u �� URLEX LLANKET . 1 / � " o � � �w � | I 2..!:•., t,� �� i � | i | \ or b|� | *811.01,J / | / � ( / |128 i � ' �� . i _-_ � | | -1 �� | i � � 1 1241 °|� ! / | | | | I | / | | | )ow | 0+00 0+40 0+80 mm 1+60 2+00 2+40 2+80 3+20 / 0 25 50 100 | | SCALE IN FEET FIGURE Typical cross—section of the proposed bioswale for the Hall Boulevard 2711 widening project (base map provided by DeHaas and Associates, Inc., 5/14/03 2003\. a, „ .,.,',., 1.,,,,,..1 . 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Nrk,,,,,'„tati •-'''. - 8/14/03 2711 FIGURE "culverts, Photodocumentation of Pinebrook Creekn 8 photo shows the location of the break i of Hall Boulevard. 19, 2003 Top west within the project area, and dak1e8n on August the 24" east of Hall Boulevard. Bottom photo shows the tributary, _.Pacific Habitat Services, Inc. Divisioct of State Lands Permit No.: 30238-RF 775 Summer Street NE, Suite 100 Permit Type: RemovaUFill Salem, OR 97301-1279 Waterway: Fanno Creek 503-378-3805 County: Washington Expiration Date: June 17, 2004 Corps No.: N/A CITY OF TIGARD IS AUTHORIZED IN ACCORDANCE WITH ORS 196.800 TO 196.990 TO PERFORM THE OPERATIONS DESCRIBED IN THE ATTACHED COPY OF THE APPLICATION, SUBJECT TO THE SPECIAL CONDITIONS LISTED ON ATTACHMENT A AND TO THE FOLLOWING GENERAL CONDITIONS: 1. This permit does not authorize trespass on the lands of others. The permit holder shall obtain all necessary access permits or rights-of-way before entering lands owned by another. 2. This permit does not authorize any work that is not in compliance with local zoning or other local, state, or federal regulation pertaining to the operations authorized by this permit. The permit holder is responsible for obtaining the necessary approvals and permits before proceeding under this permit. 3. All work done under this permit must comply with Oregon Administrative Rules, Chapter 340; Standards of Quality for Public Waters of Oregon. Specific water quality provisions for this project are set forth on Attachment A. 4. Violations of the terms and conditions of this permit are subject to administrative and/or legal action which may result in revocation of the permit or damages. The permit holder is responsible for the activities of all contractors or other operators involved in work done at the site or under this permit. 5. A copy of the permit shall be available at the work site whenever operations authorized by the permit are being conducted. 6. Employees of the Division of State Lands and all duly authorized representatives of the Director shall be permitted access to the project area at all reasonable times for the purpose of inspecting work performed under this permit. 7. Any permit holder who objects to the conditions of this permit may request a hearing from the Director, in writing, within 10 days of the date this permit was issued. 8. In issuing this permit, the Division of State Lands makes no representation regarding the quality or adequacy of the permitted project design, materials, construction, or maintenance, except to approve the project's design and materials, as set forth in the permit application, as satisfying the resource protection, scenic, safety,recreation, and public access requirements of ORS Chapters 196, 390 and related administrative rules. 9. Permittee shall defend and hold harmless the State of Oregon, and its officers, agents, and employees from any claim, suit, or action for property damage or personal injury or death arising out of the design, material, construction, or maintenance of the permitted improvements. NOTICE: If removal is from state-owned submerged and submersible land, the applicant must comply with leasing and royalty provisions of ORS 274.530. If the project involves creation of new lands by filling on state- owned submerged or submersible lands, you must comply with ORS 274.905 - 274.940. This permit does not relieve the permittee of an obligation to secure appropriate leases from the Division of State Lands, to conduct activities on state-owned submerged or submersible lands. Failure to comply with these requirements may result in civil or criminal liability. For more information about these requirements, please contact the Division of State Lands, 378-3805. Lori Warner, Manager Western Region Field Operations Oregon Division of State Lands June 17, 2003 Authorized Signature Date Issued Saleml\FOWormsWuthorization\Fernit Face.doc Attachment A Permittee: City of Tigard Special Conditions for Removal/Fill Permit No. 30238-RF. PLEASE READ AND BECOME FAMILIAR WITH CONDITIONS OF YOUR PERMIT. This project may be site inspected by the Division of State Lands as part of our monitoring program. The Division has the right to stop or modify the project at any time if you are not in compliance with these conditions. A copy of this permit shall be available at the work site whenever authorized operations are being conducted. 1. This permit authorizes temporary impacts to wetlands for the installation of a utility crossing, and permanent impacts to 0.01 acres of wetland for the construction of a stormwater outfall in T01 S, R01 W, Section 02, City of Tigard, Washington County, as outlined in the attached permit application, map and drawings, dated May 2, 2003. 2. TURBIDITY/EROSION CONTROLS. The authorized work shall not cause turbidity of affected waters to exceed 10% over natural background turbidity 100 feet downstream of the fill point. For projects proposed in areas with no discernible gradient break (gradient of 2% or less), monitoring shall take place at 4 hour intervals and the turbidity standard may be exceeded for a maximum of one monitoring intervals per 24 hour work period provided all practicable control measures have been implemented. This turbidity standard exceedance interval applies only to coastal lowlands and floodplains, valley bottoms and other low-lying and/or relatively flat land. For projects in all other areas, the turbidity standard can be exceeded for a maximum of 2 hours (limited duration) provided all practicable erosion control measures have been implemented. These projects may also be subject to additional reporting requirements. Turbidity shall be monitored during active in-water work periods. Monitoring points shall be at an undisturbed site (representative background) 100 feet upstream from the turbidity causing activity (i.e., fill or discharge point), 100 feet downstream from the fill point, and at the point of fill. A turbidimeter is recommended, however, visual gauging is acceptable. Turbidity that is visible over background is considered an exceedance of the standard. Practicable erosion control measures which shall be implemented, as appropriate, include but are not limited to the following: a) Place fill in the water using methods that avoid disturbance to the maximum practicable extent (e.g. placing fill with a machine rather than end-dumping from a truck). b) Prevent all construction materials and debris from entering waterway; Attachment A State Application No. 30238-RF Page 2 of 4 c) Use filter bags, sediment fences, sediment traps or catch basins, silt curtains, leave strips or berms, Jersey barriers, sand bags, or other measures sufficient to prevent movement of soil; d) Use impervious materials to cover stockpiles when unattended or during rain event; e) Erosion control measures shall be inspected and maintained daily to ensure their continued effectiveness; f) No heavy machinery in a wetland or other waterway; g) Use a gravel staging area and construction access; h) Fence off planted areas to protect from disturbance and/or erosion; and i) Flag or fence off wetlands adjacent to the construction area. 3. Erosion control measures shall be maintained as necessary to ensure their continued effectiveness, until soils become stabilized. All erosion control structures shall be removed when project is complete and soils are stabilized and vegetated. 4. HAZARDOUS, TOXIC AND WASTE MATERIALS. Petroleum products, chemicals, fresh cement sandblasted material and chipped paint or other deleterious waste materials shall not be allowed to enter waters of the state. No wood treated with leach able preservatives shall be placed in the waterway. Machinery refueling is to occur off-site or in a confined designated area to prevent spillage into waters of the state. Project-related spills into water of the state or onto land with a potential to enter waters of the state shall be reported to the Oregon Emergency Response System (OERS) at 1-800-452-0311. 5. Prior to any site grading, the surveyed boundaries of the wetland mitigation area and the avoided wetlands shall be surrounded by silt fencing/bright orange construction fencing/ or other, at all times during construction of the project. There shall be no heavy equipment in this area except during mitigation construction. 6. If any archaeological resources and/or artifacts are uncovered during excavation, all construction activity shall immediately cease. The State Historic Preservation Office shall be contacted (phone: 503-378-4168). 7. Issuance of this permit is contingent upon acquisition of the required Type III Sensitive Lands permit from the City of Tigard. MITIGATION 8. Mitigation to offset 0.01 acres of wetland fill shall consist of wetland enhancement of 0.17 acres of degraded wetland by increasing hydrology and planting with native shrubs and trees as described in the application and noted on Figure 8. 9. Mitigation for temporary impacts shall consist of site restoration and re-vegetation by October 31 on the year the project is completed. Failure to comply with this condition may result in additional mitigation measures. Attachment A State Application No. 30238-RF Page 3 of 4 10. Shrubs and trees shall be physically protected from herbivory and other damage with heavy gauge wire mesh or other appropriate material. SUCCESS CRITERIA 11. To be deemed successful, the mitigation areas shall meet the following success criteria: a. Survival of planted trees and shrubs (by species) shall be 75% for the duration of the monitoring period. b. There shall be no more than 20% cover of non-native species. There shall be zero tolerance for teasel (Dipsacus sylvestris), giant knotweed (Polygonum sachalinense), or Japanese knotweed (Polygonum cuspidatum). MITIGATION MONITORING 12. The permittee shall monitor the mitigation site to determine success for a minimum period of three (3) years. The annual monitoring report is due by December 1 of each year and shall include the following information: ▪ Documentation that success criteria are being met and statements regarding criteria listed in condition11 above. • Permit number ▪ Permittee's Name • Project Name • Location of mitigation site- describe and show on current map. • Location of impact site • Description of all activities that have occurred on the mitigation site during the past year(i.e. grading, re-grading, planting, re-planting, weed eradication, etc.). • Other information necessary or required to document compliance with mitigation plan. The monitoring period will start when the permittee has demonstrated that hydrology has been established and initial plantings have been accomplished. Failure to submit a monitoring report at the above date may result in an extension of the monitoring period, loss of the performance bond, and/or enforcement action. Attachment A State Application No. 30238-RF Page 4 of 4 CONTINGENCY 13. The Division of State Lands retains the authority to temporarily halt or modify the project in case of unforeseen damage to natural resources. June 17, 2003 J:\AttachmentAwestLAS\RF Removal Fill Permits\30238-RF.doc 011111 v-\ Joint ' -1t . .. US Army CorpsPermit Application Form Of Engineers THIS APPLICATION WILL MEET THE REQUIREMENTS OF BOTH AGENCIES ,8 5 Portland District AGENCIES WILL ASSIGN NUMBERS Corps Action ID Number Oregon Division of State Lands No. 3 D.2 '3 g- SEND ONE SIGNED COPY OF YOUR APPLICATION TO EACH AGENCY District Engineer State of Oregon ATTN: CENWP-CO-GP Division of State Lands PO Box 2946 775 Summer Street NE Portland,OR 97208-2946 Salem,OR 97301-1279 503-808-4373 503-378-3805 1. Applicant Name City of Tigard(Vannie Nguyen) Business Phone# (503)639-4171 and Address 13125 SW Hall Blvd Home Phone# Tigard,Oregon 97223 FAX# (503)624-0752 ❑Co-Applicant Kurahashi&Associates,Inc.(Greg Kurahashi) Business Phone# (503)644-6842 ®Authorized Agent 15580 SW Jay Street,Suite 200 Home Phone# ❑Contractor Beaverton,Oregon 97006 FAX# (503)644-9731 Name and Address Property Owner City of Tigard Business Phone# (503)639-4171 (if different than applicant) 13125 SW Hall Blvd Home Phone# Name and Address Tigard,Oregon 97223 FAX# (503)624-0752 2. PROJECT LOCATION 1 Street,Road or other descriptive location Legal Description East of SW Hall,North of SW McDonald St, Quarter Section Township Range West of Fanno Creek,and South of Fanno Creek SE 02 1S 1W Park. In or Near(City or Town) County Tax Map# Tax Lot# Tigard Washington 2S102DD 300 Waterway River Mile Latitude Longitude Fanno Creek 3 45°26'30" -122°45'35" Is consent to enter property granted by the Corps and the Division of State Lands? ® Yes ❑ No 3.. PROPOSED PROJECT INFORMATION Activity Type: ®Fill ®Excavation(removal) ❑In-Water Structure 0 Maintain/Repair an Existing Structure Brief Description:Install stormwater outfall. Total site cut/fill,including areas outside wetlands is 5,000 cubic yards. Fill will involve cubic yards annually and/or 25 cubic yards for the total project 5 cubic yards is wetlands or below the ordinary high water or high tide line. Fill will be El Riprap 0 Rock 0 Gravel ❑ Sand ❑Silt ®Clay 0 Organics ❑Other Fill Impact Area is 0.01 Acres; 10-feet length; 10-feet width; 1S-feet depth Removal will involve cubic yards annually and/or 25 cubic yards for the total project 10 cubic yards is wetlands or below the ordinary high water or high tide line. Removal will be 0 Riprap 0 Rock ❑Gravel 0 Sand ❑Silt ®Clay 0 Organics ❑Other Removal Impact Area is 0.01 Acres; 10-feet length; 10-feet width; 1S-feet depth Es the disposal area: Upland? ®Yes ❑No Wetland/Waterway? ❑Yes 0 No Are you aware of any Endangered Species on the project site? ❑Yes ®No If yes,please explain in the project Are you aware of any Cultural Resources on the project site? ❑Yes ®No description (on page 2,block 4) [s the project site near a Wild and Scenic River ❑Yes 0 No 4. PROPOSED PROJECT PURPOSE&DESCRIPTION Project Purpose and Need: The proposed project is a stormwater outfall into Fanno Creek from the City of Tigard Library. The project also involves installing a sanitary sewer connection to an existing sewer in the wetland. Project Description: The project involves installing a 12-inch storm drain from a water quality swale into a natural drainage way. To avoid erosion affects,a small 10 by 10-foot riprap pad will be constructed. There is not any temporary or permanent impact to hydrologic characteristics. Temporary impact will be excavation of degraded wetland areas,which will be immediately re-graded and restored to better than original condition. A 6-inch sanitary lateral will be installed to an existing manhole. Except for the riprap pad,the disturbed area will be restored to a natural condition. Temporary impact will be excavation of degraded wetland areas,which will be immediately re-graded and restored to better than original condition. How many project drawing sheets are included with this application? 11 NOTE:A complete application must include drawings and a location map submitted on separate 8%s X 11 sheets. Will any material,construction debris, runoff,etc.enter a wetland or waterway?❑Yes ®No If yes,describe the type of discharge(above)and show the discharge location on the site plan. Estimated Start Date 7/1/03 Estimated Completion Date 9/1/03 5. PROJECT IMPACTS AND ALTERNATIVES Describe alternative sites and project designs that were considered to avoid impacts to the waterway or wetland. Alternative sites were evaluated for the stormwater outfall.Relocating the outfall would necessitate impacts to the main channel of Fanno Creek. Currently the site drains to this tributary waterway. Any alternate outfalls into Fanno Creek would involve much larger impacts since the outfall structures would be larger and longer to reach the creek. Alternate designs were evaluated for the rip rap structure. Any attempts to lower erosion potential by spreading the flow would create larger impacts to the resource and therefore were not adopted. Describe what measures you will use(before and after construction)to minimize impacts to the waterway or wetland. The following measures were adopted to minimize the impact. • The outfall was located in a steep banked area. While entering the stream corridor,the impact to wetland vegetation and soils is reduced. • The rip rap pad dimensions were designed to maximize energy dissipation without a major encroachment. Creating a hydraulic jump reduces the size of pad and the wetland impact. • The rip rap pad will be planted with appropriate sprouts to allow for revegetation. *See attached sheet titled"Tigard Library Water Quality" NOTE: If necessary,use additional Sheets. 6. ADDITIONAL INFORMATION Adjoining Property Owners and Their Address and Phone Numbers See attached sheet. Has the proposed activity or any related activity received the attention of the Corps of Engineers or the State of Oregon in the past,e.g.,wetland delineation,violation,permit,lease request,etc.? ®Yes ❑No If yes,what identification number(s)were assigned by the respective agencies: Corps# State of Oregon# WD#2002-0324 1 4. PROPOSED PROJECT PURPOSE&DESCRIPTION Project Purpose and Need: The proposed project is a stormwater outfall into Fanno Creek from the City of Tigard Library. The project also involves installing a sanitary sewer connection to an existing sewer in the wetland. Project Description: The project involves installing a 12-inch storm drain from a water quality swale into a natural drainage way. To avoid erosion affects,a small 10 by 10-foot riprap pad will be constructed. There is not any temporary or permanent impact to hydrologic characteristics. Temporary impact will be excavation of degraded wetland areas,which will be immediately re-graded and restored to better than original condition. A 6-inch sanitary lateral will be installed to an existing manhole. Except for the riprap pad,the disturbed area will be restored to a natural condition. Temporary impact will be excavation of degraded wetland areas,which will be immediately re-graded and restored to better than original condition. How many project drawing sheets are included with this application? 8 NOTE:A complete application must include drawings and a location map submitted on separate 8%X 11 sheets. Will any material,construction debris, runoff,etc.enter a wetland or waterway?0 Yes ®No IIf yes,describe the type of discharge(above)and show the discharge location on the site plan. Estimated Start Date 7/1/03 Estimated Completion Date 9/1/03 5. PROJECT IMPACTS AND ALTERNATIVES Describe alternative sites and project designs that were considered to avoid impacts to the waterway or wetland. Alternative sites were evaluated for the stormwater outfall.Relocating the outfall would necessitate impacts to the main channel of Fanno Creek. Currently the site drains to this tributary waterway. Any alternate outfalls into Fanno Creek would involve much larger impacts since the outfall structures would be larger and longer to reach the creek. Alternate designs were evaluated for the rip rap structure. Any attempts to lower erosion potential by spreading the flow would create larger impacts to the resource and therefore were not adopted. • Describe what measures you will use(before and after construction)to minimize impacts to the waterway or wetland. The following measures were adopted to minimize the impact. • The outfall was located in a steep banked area. While entering the stream corridor,the impact to wetland vegetation and soils is reduced. • The rip rap pad dimensions were designed to maximize energy dissipation without a major encroachment. Creating a hydraulic jump reduces the size of pad and the wetland impact. • The rip rap pad will be planted with appropriate sprouts to allow for revegetation. NOTE: If necessary,use additional Sheets. 6. ADDITIONAL INFORMATION Adjoining Property Owners and Their Address and Phone Numbers See attached sheet. jHas the proposed activity or any related activity received the attention of the Corps of Engineers or the State of Oregon in the past,e.g.,wetland delineation,violation,permit,lease request,etc.? ®Yes 0 No If yes,what identification number(s)were assigned by the respective agencies: Corps# State of Oregon# WD#2002-0324 7.City/County Planning Department A lavit (to be completed by local planning acial) 0 This project is not regulated by the local comprehensive plan and zoning ordinance. ❑This project has been reviewed and is consistent with the local comprehensive plan and zoning ordinance. ❑This project has been reviewed and is not consistent with the local comprehensive plan and zone ordinance. ❑Consistency of this project with the local planning ordinance cannot be determined until the following local approval(s) are obtained: 0 Conditional Use Approval 0 Development Permit ❑ Plan Amendment ❑ Zone Change Other lips,Ili St. ,..s.1) e L.. ,n,plication K) has 0 has n been made for local approvals checked above. / • / G /n64 ,, G Day 517-43 Signature of local planning cial Title City/County Date 8. COASTAL ZONE CERTIFICATION If the proposed activity described in your permit application is within the Oregon coastal zone,the following certification is required before your application can be processed. A public notice will be issued with the certification statement which will be forwarded to the Oregon Department of Land Conservation and Development for its concurrence or objection. For additional information on the Oregon Coastal Zone Management Program,contact the department at 1175 Court Street NE,Salem,Oregon 97310 or call 503-373-0050. CERTIFICATION STATEMENT I certify that,to the best of my knowledge and belief;the proposed activity described in this application complies with the approved Oregon Coastal Zone Management Program and will be completed in a manner consistent with the program. Print/Type Name Title Applicant Signature Date 9. SIGNATURE FOR JOINT APPLICATION Application is hereby made for the activities described herein. I certify that I am familiar with the information contained in the application, and,to the best of my knowledge and belief;this information is true,complete,and accurate. I further certify that I possess the authority to undertake the proposed activities. I understand that the granting of other permits by local,county,state or federal agencies does not release me from the requirement of obtaining the permits requested before commencing the project. I understand that payment of the required state processing fee does not guarantee permit issuance. 1 A� , Ug-�- • P •PL'e-YN s Gt ��j rte- eerie anager ' Print/Type Name - - - Title N P 1-1(.A..it—et,. tea.,( . 11, Zoo 3 Applicanti ture Date I certify that I may act as the duly authorized agent of the applicant. Gregory Kurahashi President I Print/Type Name Title 1 Lill I/CY; Authorized Agert6'-'ignature Date 10. SUPPLEMMI±:.NTAL WETLAND IMPACT INFORMATION* (For Wetland Fills Only) Site Conditions of impact area Impact area is ❑ Ocean ❑ Estuary ❑ River ❑ Lake ® Stream N Freshwater Wetland Note:Estuarian Resource Replacement is required by state law for projects involving intertidal or tidal marsh alterations. A separate Wetlands Resource Compensation Plan may be appended to the application. Has a wetland delineation been completed for this site? ® Yes ❑ No If yes,by whom: • Kurahashi&Associates,Inc. (Brent Davis). The concurrence letter is attached after the figures. Describe the existing Physical and biological character of the wetland/waterway site by area and type of resource. (use separate sheets and photos,if necessary). See the attached Wetland Delineation Report and HGM Functional Assessment Report. This site is not used for navigational,fishing,or recreational use. There are no known ESA or archeological information. 1 Resource Replacement Mitigation Describe measures to be taken to replace unavoidably impacted wetlands resources. 7,800-square feet of site was converted to wetland plantings along Fanno Creek. Additionally,the buffer area was upgraded. *Because this information is not necessary for a complete application,you may submit this sheet and other environmental i information after submitting your application. • t 07/98 • Tigard Library Water Quality As shown on Figure 11,the outfall originates from a water quality facility. This facility consists of a sedimentation manhole and a bioswale. The design of these facilities conforms with the Clean Water Services(CWS)Standards for Water Quality Facility Design. In establishing the standards,CWS uses a variety of guidance documents. These documents include: • The Total Maximum Daily Loads established for the Tualatin River. • The EPA Best Management Practices for stormwater treatment • Title 3 of the Metro Urban Growth Management Functional Plan • The Endangered Species Act • Other local,state and federal guidance documents Facility design intends to improve the water quality in the Tualatin Basin,. The Tualatin River Standard require reducing • Stream temperature • Nutrient(Phosphorus/Nitrogen)loading • Oil/grease removal • Herbicides/pesticides • Sediment transport/imbalance • Enhancing preserving riparian habitat During a water quality storm The Library water quality facilities are intended to • Remove 65%of phosphorus loading through biological uptake • Remove 70%of Total Suspended Solids by sedimentation • Reduce water temperature by shading • Reduce BOD by biological treatment • Remove particulates and metals through sedimentation. The designed water quality facilities meet the current DEQ 303(d)standards for the Tualatin River. ADJACENT PROPERTY OWNERS 2S102DD00200 Fred Fields 1149 SW Davenport Street Portland,Oregon 97201 (503)228-7089 • 2S102DD00400 • Solaris Homes LLC 121 SW Morrison Street,Suite 200 Portland,Oregon 97204 2S102DD00401 City of Tigard 13125 SW Hall Blvd Tigard,Oregon 97223 (503)639-4141 I 2S1010001200 Fred Fields 1149 SW Davenport Street Portland,Oregon 97201 (503)228-7089 • • c j 1 Y k, g ��'_ - F�i X43 "' w' �". ., ` ..„istb,r 12 mak,,».' ''.r •1,i t l Fr I x.''''," -.tri #12 It 'l _ T . T{ tir i VP om= . f ;mss.; . . ' rZ r f , u t .1 ,,,,,--41 �e • i'{ `�_ ' } st v„ f a dp t� t a iia a 4 ..‘,-.„,z ',.� �' !', `�` :. .0-,-4,94.‘,.- 1 - E'$ \ ,: - j.'�+ -sem , fit i '•h _ i 2- r t ' „flay _ 1 g . ....444.4„, .., ,,,-,-,,,,,,,,z. , ,. ..,.t..„... . ,N - pk,.... Siliffr-AA. . -- ,-, , ,,..,-----. ,, Vt.„-:,;:. s 4,,tc ' - . _,...,.. i '‘../1? i ! ''N's- 44,1/4*91r..„ ....*, f.,(1,,,V,,, ' t?.,-..,.6 , . ,t4.-....cf,-, „„gicz. -4- ---- Az_ '''C' ''''',,, / Rk • ;.'.."'rt#,. ei, . — It . , tit.-,,,,-.,, .. ',7''1. ,r;ligr: '441F. -..‘ N ki, P 0 . ,,-;-'' .1 414:"71, : -";:r 4‘‘ *7*;*‘'.f'if'; I 111.4"4' ",,V,-..•-i"(40604 .0''' ;700.4-4i\`,_ 0 0 it 40( . 0.-.-• -LI- .,--11;11,. - •,,j,-)-„,;?, .."/.7,4rd.IP.-..0***OF-, - ft./ & h.\,v, A ' , , _„,,,,,f:„--.2 ,i',.; E,,,-,,,,,,„„,.. -.44 1 ,_;..., .,,,: alots-r,c.",4",. ...-1, ;T., * .."."'''''WON. 7 —•414,,,cs,',.--4...--,,-.`,.--, '':,= j t,.,,,vy:,;.- 111 a.a.....t„'''' ,.',.-;;:_.„-r" ..&:.,''.1-'-',„. ,..--...nz.____ =', .7 1 , a.gb!), ,,,fl, . 0,, -I,..1.,,,,,,,,,,, .,,,f,,,zr-r,„......,.; ....„: Y''';,---' ..-'1.-VikigiA,:t.i'f',.i?,!:Zi.-;','? PR.1,krati$:.,(,,- (4f4 111747.,40"-i-,%.: 't'4"'l .q'' i 4 „4' .4_<✓%.. ?46?or ,1442.e,\.. •tom t I iV E A' ��r4, ",). -41 ' ." ,Rs' �j I s ' i ,_,--. .V.1:::„11,,,-,77,,,,,,..,„.,t,-,,g, ..ii 0,1 ,,_.,, t 4,,, '-„,_;--.. _ -- .,.,,,,„,....__„,,7 v."-,,Z---41--.-7'.`-'-'4Oo'''''''''N p b, --, < -i:.' -" r,44 - i'44..p,r, r� �► A• ~la a ..-' e3 '2:' i i4( t;',40 j ' I T "-w-- _ ,k,,,,11„ Y' - a,a ' f t x ,,+„` + fit rf c ,` ; 0 T .i,,.,. ^7 ,�,,r (6,- / , es 016',_ ,-- xccs;.J A''r.. + ,. ' e,-c ritr ,�-` i.., -dattrity ,, p�� r Do U N -o ,___,F—' 1 rEirM1 vias [SEG J { KURAHASHI Vlldlffl1 y/ j4jr 0 1000 2000 a.n Inabsearing•Water a, e• SCALE: I"= 2000' 16660 SW Jay Tigard City Library c °" oma.- City of Tigard is ay 23, 2002 Project No.: 2057 Drawn By: BHD i Scale = 1:24000 (1W = 2000) Source: USGS 7.5'Topographic Series J lilliii t- *111111k.44kbW 1,J' +l .illi ::^moi j a F ellittekk- aii WO -- 4 12411w. 49„-- itt ite 2L- •ffink. II i WIZ la ilhlillil i iiii a. 200 1200 = 0111 All 11 300 I 111111111 U " . arm. } 11115.111•11.1111 Ire _.: 91,11 , Wet and De lineation Ail KURAHASHI Tax Lot Map Tigard City Ub landscape Arobiteetsrecif of Tigard ikr+.ms ISBN SW Jay Sheat,Suits 200nellt ��1 y 23, 2002 t - z oxo•-• Dre. r By: s,6 ip 0 250 500 Project o.: 205 SCALE: l"= 500' Scale = 1°°= 500° -� v s. ' / j / 111 ~. .. `+ �t I I nr �/` CO /� / \ ! A.\i ' 'C - HUNDRED YEAR -' -_frg r i T FLOOD PLAIN 1 /id :% > ! BOUNDARY to 1/4'D sar /,t. iir1 *VAPL! \ !!':t i s T , "� =WETLAND AREA ' ! U`'DRED . ! f'' r i i /rt, f L F`OD P�� 1 TOP OF BANK - /` f f 0UNDAR t� :PA wok' if4 Zi -.,--, / ,.. . to .411, o ;' ' K ; ! ? I I / s slQ �' 1 • / •. ,f 50 25 0 50 t s i,; I j "t ,j.` I 1 / /i /; /` �w °' % ` \ 1 1 INCH 50 FEET / r \* i I ea 1 kx 4" Dc "� i AL t i t ' \ 2B%O/,.`UST -„'` : \ ' 7 Y t I i , \ — ---,, ____ _ ___ ___ __ _ �iC '- , ''� • r Be• rr�t� i /■ / �' / t —' m} "' \ \\ 1 '_ / / j �`---'411101,44N - 5:1 GRADING IN BUFFER V GETAT�uN II; ' i ''''''`,#\:\,' NO TREES REMOVED P ,I 1 op Is-D�t f 1h3 • ,r TO 4. /, '. . f i Tribufo ` i .......... t / I5 LOC CT l' 1 ;/` F�. ` I_I_ ROP SE ;s c 'ST j1 0. (.2 r r s, 0 1 ANIT. RY i' ,i,% -A Ie rs / it1 '," / usTE. — . — 1 .O D Y 10 / \ 1:1, 1 S" 1 , A jot ).) 1 I 1- ,,,\,, ✓'/ / '' ' %' �`- -��_ A�� —+� //-'/ •moi`,-.'.'f `• i' ''-\� , .i \,_--:_---,-__________„____:-.� � . fes, k\. may_ .....— / ,r f � f'J "`r. ......^""' .,�.„�--'' --.-a ��' ��\\ �`. N NN stIST ___ 4 .7"'y`.J '/ /', `' •�llf _ �^"_" ✓ � i' , l .^. \\�.\\\."-,.`-�. \ \;, i\ \ \, l.. ,\, `fir ��. •` ci -----,,,,,1010 ...SQ L Tom..--� ,,,,„ "-\` \\ �.�\\ \` \ \.` t\ t\ :r ?O LCF1 Tom\ \ -\ \'l ,, i •\ • l MIM S SCALE KURAHASHI Tigard LQIbr�Py Plan v oew Wetland l tr p l©t 9• ; 0' & ASSOCIATES. INC. 21 Civil Engineering •Nater Resources SHEET Landscape Architecture • Planning Environmental • Surveying Marsch 1 2j 003 15580 SN Jay Street., Suite 200 March LJJ9 'LV LVJ�7j • gi Beaverton.Oregon 97006 FIG. xlt (503)644-6842 fax. (503)644-9731 '& =PERMANENT IMPACT 40 20 0 40 ' j/ =TEMPORARY IMPACT 1 INCH = 40 FEET i y I I '28 L 0? ST 3. -fib.► . '7' iiii ` ►� Bei N} .NG ACTS 6 I 1II 1 1 0•TO l' 41 Zr . STMtJTFALL N.4, ROTv* :45 INTO. /BUFFER . AND. _ . . SANIT' : �/ '� �'�' WETLAND `, WETLAND \ �l40r�ll411(�� / BOUNDARY ; 511019/ 410A10.144:4"/.4%4 i 4 4' -.1111111- ovr .ataii. "_, /Irrer."--7, i k __;;;-- -.---flerivi • ' 4"i/fek46 a I a i b s.,„,giza..,. .4411 __,0,16 ________ „ ;7: J iiiki . ,e, . 0/ serT _____. . 110, �K �ocusr Cu441ihk 1114111!-•40(\ S - LO ._ T \ fl \ 1\ tolocv @)_... _ _ _ 10"LOCUST \ , j Phillial Tigard Library SCALE xuRAxAsxI � 8c ASSOCIATES, INC_ mporrarry and Permanent Wetland [Impact ii : 40' , Civil Engineering •Water Resources - - MM Landscape Architecture • Planning SHEET 15580 Ja Street, March 13, ^9 2003 SW Jay Street, Suite 200 . 1�,\N),U'o N2lj Beaverton,Oregon 97006 ,A (503)644-6842 fax (503)644-9731 .FIG. S7 WETLAND AREA ►. DISTURBED AREA TO BE REVEGITATED TOP OF BER 31` 6" OF RIP RAP EXISTING GROUND OVER PIPE INL 10' X 10' F _ CLASS 50 RIP RAP LIVE STAKE PLANTING P I I Li r ;A i, 2' O.C., TYP. . IV':S: CREEK IE=139.75 12" PVC IE=138.0' Stormwater Outfall Cross Section WETLAND AREA 6" OF RIP RAP OVER PIPE IVE STAKE PLANTING 2' O.C., TYP. 10' X 10' CLASS 50 RIP RAP -III—_ — —�� .�. i ORIGINAL GROUND 1.00 NOTE: 12" PVC PLANT CORNUS SERICEA (REDTWIG DOGWOOD) AT IE=1 38.00 2' O.C. TYP. ON RIP RAP OUTFALL Stormwater Outfall Detail 1111111131 SCALE KURAHASHI Stormwater Outfall - Wall Street Pond ae ASSOCIATES, INC- N.Y.S. ArchitectureMEET• Pluming Environmental.Surveying 15580 SW lay Street.Sotto SO° iAlarch 12p 2003 (503)4-east r.(503$44-5731 Irl®. 74 L �. \ ( i*" {p ' —} ✓—Lai'_ / .... .._. ; �\ sl :----' '\,1,—: �y.v,6 ''''\• \ r _.._._. _....._ _...._ _... I{URAHASIC Y;;-' ) ♦ V A9lOCiATCB, INC. N ,„,,., G I. : ;rjj .� w // �_ LEGEND: r ( V% 1 j.` ` to leadeoope W."iv..nw -.r,`''-,. teem n ry Street,NAN SOO r....nw.Mn NON "` (60.1N -6Nr fu MOM.,MI \ w ,- ,� \ y4 ROOT WAD—(4 TOtAL) _13,:v 0• I) /,''', ,t,t, ./ / , r -) --. ..\,'\.\\\ 0 4 , i • sii ' e,„ ( (,„//, .," ,„..)„,,„‘, 7:„.„,., \, ,,, ,_.,. ., ri it," X N \\\\ ))9K4' ,- \ x \' 1, I / \ 4" .r' I /ter ltbpbAfr ) eniki / /// / `'' ,'-' TRIBUTARY 0 ... .. •\. .„...-,-,-,r �� ' / �. ., CREEK o `,may �' //�t`��` ! �� d 00 (3) QUGA/ (Z5 ALRU �,- y /(�I ,,../ (240)/CAOB \\ � \ eW ti 7I'1 .IA�6r�:As t I� \ OA.A-I',p.., (4 0) S C M I '� �,`\I,I �o 'vi -�.i.A9 ^r ) .(3)--NASI (i s \( y_..:.. . . , , \ \ � `‘,..:-1,.4.-410:4.3.,••73:41f: - 3 SASI 1, 1 - 1 m 0 d 0 R00TWAD,..'TYP. ( N. ,:�.n:..A-..A-- ( ) 4RfAf �� ._\ _,,,e' vv., ...6,#,-..:••.• ;"1,11,11,...-.-AA- , 4 (450) CAGB G �� \� C V / —. .---e,,,,,,-Atli. -A-A-1./" i re-1A t -/�/-i V►� . : _-- -,- A0:::2 : 41StA.-- = (450) SOMI ! ,/IVY ,•__ �� J ALRU ��",,�-�N,..�:.�^.. ,,Vv.%; _ -.A.A-A-A-A.a.---....!a.A-A.wA-Ae I • % rw '�^ `�.^I� w.�', _ (3) ALR .<0// : 1114---- CI Q -• - OC A-A-A-A..�OA`�S // N" ! /. __ _ _ ��A�/.AIIAV WAA.A•Avn 6O�J J / eek • • ,r_• i/� ,e Aediri1�t►•eei4 _ — — �' ® _ - ._erre._ D T./!_ 44 'telt►.. tit :6A— — `� — �^ \ \ �'`--_ `- '°"' _f„i _— 2/,/,.� " // j °� . .._ ` \\ �4�V�LL��I'y'i'' ------` erre. ---,..w,------:.-----A-,:, .. ��.� 4Ciok ,� -��` M -ROOTWAD TYP. f--,*----,.--.._._ I1 1-11 „ - -(2o.)_c b SE r "6-, „?tet.^ 1N,,,,Ivek f- :_ �� '�.`�- .T9 ♦ t„7 p\-'i::CtItIiiiiiigcc as`.. �._c �...._ � •__ uu\V (3) Q U G�4 < N•� rr( s�_ 00000000Ao-A.O�®1.Q, - .� ., _ 1i •1 .A&AOA.000OOA-A.A.AV. �I+�h - / `ere... ` -A ------�--ice-----'-----' -A$ 1 .. .. 3t5- E P G "'' 2 C R uU __ erre.---- 4S/ SA SJ: AGE ----.., `' )N`.,. \erre. • -. C'st' AtAvo000AVA-A.A-A-.fe-i. frr ,i l) -...� .� - .-A�aysysOA.e-A-ovsCpsne-sy fl "... (,... SEEP 26' •.,H OL?6. ,.A..-...-----1.A.A...A----- .0 C A 0• , �( }' ( RLQ A: S C `„. -.,(.3&)''ROP{-`,, \75, )�U ESI; ' \ \\ r'y WETLAND BOUNDARY -(36)--COSE., (-00 T�'GR\\ `� WETLAND RESTORATION \\ SCALE: GENERAL—NOTE: ., '\ \\\ \ \ \ \ \\ 1 EE FIGURE 2 FOR \`\ \ `' AREA = 7800 SQ. FT. �._ \\ N. I 64 1...40.-0' PLANTING LEGEND Aft-TtSTEs.— \ , \ \ �, \ ;�. \ \ \\` \ '\ \ .` \ SHEET: 2. SEE FIGURE 3 FOR \ \\\\ \ \ \ ' mar ROOTWAD DETAIL. \ \ \\ ', \\ \ \� \ \ o Io' 20' 40' \ \\ \ \`\� \ 1 N \ \ \ (/ \ SCALE: I"=40'-0" NORTH FIG. 6 '1 �.__. . r. ._ _.. �: ,._.._.: ...... KURAHASHI . AasocxARne, INC. Nn.j1=;•,h1e Playlig PLANTING LEGEND PLANTING LEGEND 10011 a"as Mot.Ana mo e....ns erg. nee, IBMS GrROUNO COVER (100.44.4.4 A"0101)614-071 ABBR. QTY. SYMBOL BOTANICAL /COMMON NAME SIZE CONDITION ABBR. QTY. SYMBOL BOTANICAL /COMMON NAME SIZE/SPACING CONDITION ALRU 8 O Alnue rubra / Red Alder 4'-6' B&B CAOB 1290 ® Carex obnupta / Slough Sedge 12' O.C. CLUMPS %� ' JUEF 750 Juncus. effusus Soft Rush 12" O.C. CLUMPS 73 CRDO 5 .fp Crotaequs douglasit / Douglas Hawthorn 4'-6 B&B ® / FRU 3 O Froxtnus lotifolia / Oregon Ash 4'-6' B&B SCMI 1290 BE Sctrpus microcarpus/ Small—fruited Bulrush 12" O.C. TUBERS QUGA 70 Quercus garryana / Garry Oak 4'-6' B&B TEGR 730 ® Tama grondifloro / Frtnge Cup 4", 12" O.C. POT �1� SASI 10 LC Solix *Itchenets / Sitka willow 4'-6' 8&B v SHRUB$ ABBR. QTY. SYMBOL BOTANICAL/COMMON NAME SIZE/SPACING CONDITION LIVE STAKES Ens ABBR. QTY. SYMBOL BOTANICAL/COMMON NAME APPUCATION RATE CONDITION COSE 286 Q Cornus sericea / Redosier Dogwood 2 GAL, 42" O.C. CONTAINER ems. COSE 200 Cornus sericea / Redoaler Dogwood 2' 0.C. LIVE STAKE NODI 26 ® Holodiscus discolor/ Ocean—Spray 2 GAL, 60" 0.C. CONTAINER MIN. 2' ROPI 36 Q Rosa pisocarpo / Clustered Rose 2 GAL.., 42" 0.C. CONTAINER LENGTH OD 1 SALE 33 0 Sambucus cerulea / Blue Elderberry 2 GAL.. 60" 0.C. CONTAINER C IC NOTES a 1 C I. CONTRACTOR SHALL VERIFY AU. QUANTITIES, MEASUREMENTS AND SiTE CONDITIONS. 7. USE BARK MULCH TO A DEPTH OF 2" UNDER NEWLY PLANTED TREES Oas i e. D 2. THE CONTRACTOR WILL STAKE, OR FLAG, PROPOSED PLANT BED AND TREE LOCATIONS. AND SHRUBS. I Q THE CORNERS OF AU. SHRUB AND GROUND COVER BEDS SHALL BE STAKED TO ALLOW 8, ALL PLANTS, MATERIALS, PLANTING AND SEEDING ACTMTiES SHALL CONFORM FOR REVIEW BY THE OWNER'S REPRESENTATIVE. TO NORMAL LANDSCAPE INDUSTRY STANDARDS. INFERIOR PLANTS OR SEED WILL 01217I ee 3. A PRE—PLANTING MEETING WILL BE MELD. CONTACT OWNER'S REPRESENTATIVE AT LEAST BE REJECTED. TWO WEEKS PRIOR TO THIS MEETING. SUBMIT TO OWNER'S REPRESENTATIVE WITH NURSERYg, CONTRACTOR SHALL CONTROL BLACKBERRIES, THISTLE, TEASEL, PURPLE n' SHIPPING LIST" TO VERIFY PROPER SPECIES AND QUANTITIES. PROVIDE ONLY SOUND, LOOSESTRIFE, SCOTCH BROOM AND REED CANARYGRASS WHICH MAY DEVELOP Wila HEALTHY, VIGOROUS PUNTS, FREE OF DEFECTS, DISEASES AND AU. FORMS OF ON SiTE IN NEWLY PLANTED AREAS UNTIL FINAL ACCEPTANCE. INFESTATION. SAMPLES OF PLANT TABS, COMPOST, AND SEED MUST BE SUBMITTED BY THE CONTRACTOR FOR REVIEW AND APPROVAL BY OWNER'S REPRESENTATIVE. 10. CONTRACTOR SHALL PROVIDE ONE-YEAR PLANT WARRANTY AFTER ACCEPTANCE NO PLANTING WILL BE PERFORMED BEFORE THIS MEETING, OWNER'S REPRESENTATIVE OF PLANTING BY OWNER'S REPRESENTATIVE. THE CONTRACTOR SHALL REPLACE ALL MAY MAKE ADJUSTMENTS TO PLANT LOCATIONS AT THIS TIME. DEAD OR UNHEALTHY PLANTS FOUND BY OWNER'S REPRESENTATIVE AT THE END OF 4. PLANTING PERIOD IS WEATHER DEPENDENT AND PLANTING SEQUENCE SHALL BE THE WARRANTY PERIOD. ADJUSTED ACCORDING TO SOIL MOISTURE. ALL TREE, SHRUB, AND GROUNDCOVER 11. PLANT QUANTITIES SHOWN ON PLANS ARE FOR CONTRACTORS CONVENIENCE ONLY. aPLANTINGS SHALL BE COMPLETE BY THE THIRTY FIRST OF OCTOBER AND AU. GRASS THE CONTRACTOR IS RESPONSIBLE FOR PLANTING AT THE SPECIFIED O.C. DISTANCE a0 SEEDING SHALL BE COMPLETE BY THE FIFTEENTH OF OCTOBER UNLESS PLANTING PERIOD SHOWN ON THE PLANTING LEGEND. IS EXTENDED BY OWNER'S REPRESENTATIVE AS A RESULT OF CONTINUING'MILD WEATHER. 12. STREAM AND WETLAND PLANT FERTIUZATION REQUIREMENTS SHALL CORRESPOND TO 5. KEEP PLANTS MOIST AND SHADED UNTIL INSTALLATION. DO NOT LEAVE THEM IN SPECIFICATION 02930 — 2.15 WETLAND PLANTING SOIL MIX. THE SUN OR LET THEM DRY OUT. WATER PLANTING AREAS AFTER PLANT INSTALLATION. 13. PLANTING AREAS SHOWING TWO DIFFERENT SPECIES (I.E. SCIRPUS AND CAREX) SHALL BE PLANTED WITH EQUAL NUMBERS RANDOMLY SPACED IN PLANT BORDER AS SHOWN. 6. DIG, PACK, TRANSPORT AND HANDLE ALL PLANTS WITH CARE TO ENSURE 14. INSTREAM WORK SHALL TAKE PLACE BETWEEN JUNE 1 AND SEPTEMBER 30. PROTECTION FROM INJURY. STORE PLANTS IN THE MANNER NECESSARY TO ACCOMMODATE THEIR HORTICULTURAL REQUIREMENTS. HEEL—IN PLANTS 15. CONTRACTOR SHALL NOT COMPACT BACKFILL IF NECESSARY TO PROTECT ROOT BALLS AND KEEP THEM FROM DRYINGOSCALE. N.T.S. FOG, 7 UNDISTURBED NATIVE SOIL Min' EXISTING BANK AND BED KiMRciA ES. No W Wm-wow AnK1•!. 4"'M LIMIT OF EXCAVATION 0 mw....W•ew.qu, COMPACT NATIVE SOIL BACKFILL TO 80% heoe VW lay R.N.Who e ireW 1. I . (421%.°211.41%),....t. 2"X4"X24" WOOD STAKES CUT FROM UNTREATED DOUG FIR 2"X4" STAKES 4' O.C., TYP. LIVE STAKES ROOT WADCO < FINISH GRADE LIVE STAKES ® 2' O.C., TYP. OCII0 \4t94 �%` �yiROLANKA BIO D—MAT 90 C �` q" ,�iv04, .. i EROSION CONTRQL BLANKET �- CD 1�OC��0 �� (OR APP. EQUAL), TYP. — s ig`•��o/��O��'S°;\`4.t/;:0�;y`. l 1! 12 / C3 IV 153 '`• ��r��4,......N.:4 ".,,,,`"\ ��.t! 1� HEIGHT7 WOOD STAKE its .t, .1' ? i,.&..!•�,,r.- OT— f4 VARIES /A* c) —.% / %`> >- �/>; ,,z4e .•Tti ` ii`�fi `1v3`/4 ``%11t``4- `\ `%v4`\S\ !`` �C,/``j�pj;0,'``j`j``j'``�````��\i`\j�oO``',441'NV\y'O�O'�O�i``j'``�O'\`�``��``O``j'`\��``� /( "\ ``4��,lp��`44,. ��`�,\..A`,\�\`\\••`•`/•`,/��:\/0e,4%,!��4�!�„teke,��i�.•?O co ea °' 'V r:3'1 8'-0" SECTION °� Cl ROOT WAD .� Q EMBANKMENT PLAN DEPTH / C3 NOTES: C 1. ROOT WAD TO PROTRUDE INTO CHANNEL THE DEPTH OF THE ROOTMASS AS MEASURED FROM EXISTING BANK CHANNEL. 2. TREES REMOVED FROM SITE SHOULD BE UTILIZED AS ROOT WADS. COORDINATE WITH OWNER'S REPRESENTATIVE. 3. CUT LIVE STAKES END TO A POINT FOR EASIER INSTALLATION. 4. TRIM OFF BRANCHES FROM LIVE STAKES W/ CLEAN CUTS. 5. LIVE STAKES ARE TO BE PLACED 2' O.C. SCALE: 6. BATTER ROOT WAD TO MATCH EXISTING CHANNEL BANK. H.T.S. SOFT GABION SHEET: C.1) SCALE: NTS (SECTION & PLAN) Foe. a y 1 I _ �. ,. .... .._ _ m _ _ 11111161111111116111 ? !?{ry, '� "�,' KURAHASHI •. 'f .r �(�✓/f` ,iLl I t �� T 5 1 a. LEGENp Wv.....MAM.. ,V.., /` \ \\, 1 L, ..-.. ` ~.-�.. PHOTO LOCATION POINTS ,ebeee*,..1..0.SM.BOO - V 1wi/ // rT : * ç_ \` N\-\ \ ,\, ,,,, aii . i 1 ,--/ 1 .4404, ,, .0))."', i ' ) 1 / \\\\\.\)' .i,i/i .., / / ed ,,,, _____\ . Deem / \\ i _ r /ry ,i- of! '\' fut , \ a i N 0-:,,,/ / //, i il il \ , ; / ' V/Atiel rtfi 1"--- 11111.s'":":':-\\ • , V `11,7 4'_ _ _',..----2- ..� awR -ff Y\ � y '� '� ^ J� -7,-4 f� .\ (3)\ yy^ \ ` ►. �y �' _. u �aj r�. // C l`.� e�\ .Mut`t �r � X.__ _ ••.� �\ / % 1 -*Pr \ t�Cp —._....._.......»_-.....—,- ....,. .-,�+n / 44 r,. N .... U A' rr _ Est 1 \� t as %l \� \ ti� \ \ , ,„ \ \ \ \ ` ,. 11„Ai Ili \�\\ \ \\ `\ \ `\ \ \ l �\..__,.. SHEET: �� \ \\ `\\ �\ \� 0 10' 20' 40' \ \\ \ \\ \ \,\ \ \ \ \ \ - SCALE: I"=40_0" NORTHFOG. .. • Plant Monitoring Objectives and Success Criteria The monitoring goals are to be achieved by meeting the following objectives and success criteria: MIi' •Planting KURAHnId StHI NC. Establish riparian wetland plant community over the 7,800 square feet of wetland restoration area. ""1`""'""• '"'"""'""" Lobos,* r.. •n...l.e O..0a1tal.nuW•tungB.t The success criteria will beat least 80 percent total vegetative coverage(estimated visually)the end o the first year. IMO MI Jp B/Stmt.l,Bu1N B00 B..»„..0.4.• roof The success criteria will be at least 80 percent total vegetative coverage(estimated visually)by desirable natives by the end of the second year. "'""' `"'"""'r The success criteria will be 80 percent total vegetative coverage(estimated visually)by the end of the monitoring period(third year). The success criteria is to have native trees well established by the end of the monitoring period. The success criteria is that non-native invasive species reed canarygrass and Himalayan blackberry shall not exceed 20 percent cover after three years. g .Monitoring Program ° , To ensure the successful completion of the restoration plan,monitoring will be conducted over three years. An as-built topographic survey will be Ct conducted and an as-built report submitted within 60 days after initial planting is completed. Inspections will be conducted once annually in the three year g monitoring period; with a comprehensive report compiled for each annual visit,by a landscape architect or a biologist. The three monitoring reports will t include text describing findings and conclusions,plus photographs of site conditions,plant performance data,limited hydrologic data,and other information such as observed wildlife usage. °g .Monitoring Criteria Planting . e D This program would monitor vegetation parameters for a period of three years and include recommendations for removal and management of undesirable g O invasive species,to preclude dominance by one species. Total plant counts established on the mitigation planting plan will be used in determining V3 N vegetation parameters discussed below. Selected trees will be tagged in order to monitor growth and survival rates of different species in a range of d locations. In addition,permanent photographic points would be established to provide further documentation of the changes in wetland vegetation over 7,7 time. See Mitigation Plant Monitoring Plan for locations of proposed photo points. Annual vegetation sampling would be conducted during late March, O N and in the late growing season.Each of the parameters to be monitored is further described below. .., , e a. Vegetation Monitoring: Vegetation would be monitored annually during late March and the late growing season within two weeks of the same time co every year. Monitoring would consist of species list compilation and estimated percent cover of vegetation within established mitigation area. To C' ems supplement this information,photographs would be taken that provide a representative sample of each shrub and groundcover species proposed. Oe Groundcover data would be collected,and shrub and tree data collected within the restoration boundary. M b. Tree Tags: To document the rates of growth and survival,a representative tree will be tagged and monitored. To supplement this information, photographs of the tagged tree would be taken. 0 c. Overview Photographic Sampling: To supplement the sampling measurements described above,permanent overview photographic points would be 0 established sufficient to provide consistent photographic documentation for the entire mitigation area and the overall character of the restored wetlands. .w CP • Contingency Program X Should the desired mitigation goals not be achieved,a contingency program will be initiated. The first step of the contingency program is to complete an analysis of the cause of failure in meeting a mitigation performance standard. Once determined,appropriate remediation steps would be proposed. These steps may involve replacing plants that have not survived or additional plantings if growth rates are poor,increasing frequency of maintenance and watering schedules,weed control efforts should reed canarygrass and Himalayan blackberry persist,and further excavation or adjustments to site hydrology if SCALE: required to provide the necessary hydrologic regimes. 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I _. .... / A I, al \te-4ll1. lI .... irnle.4y��rrA IM.,,,rln A- . --r-44"-- .7 ..-- • 1 _ - fel .-eitv Oregon Division of State Lands t 7:/5 Sumner Street NE,Suite 100 Salem,OR 97301-1279 John A.Kitzhaber,M.D.,Governor (503)378-3805 FAX(503)378-4844 Kuraishi&Associates,Inc http://statelands.dsLstate.or.us October 8, 2002 • 1VZ State Land Board OCT 1 1 Z John A.Kitzhaber Vannie Nguyen d RECEIVED Govervor City of Tigar 13125 SW Hall Blvd Bill Bradbury Tigard, OR 97223 - Secretary of State Randall Edwards Re: Wetland Delineation for Tigard Library located in T 2S R 1W . State Treasurer Section 2, Portions of Tax Lots 100, 200, 300, 600, and 1200 in Tigard;WD#2002-0324 1 - Dear Ms. Nguyen: I have reviewed the wetland delineation report prepared by Kurahashi Associates, Inc.for the project referenced above. Please note that only a portion of each tax lot was investigated,see study limits (not property boundary)on • - attached Figure 5. Based on the information presented in the report, I concur with 1 the wetland and waterway boundaries as mapped in the revised attached versions of Figures 5 and 6. These wetlands and waterways are subject to the permit requirements of the state Removal-Fill Law. A state permit is required for fill or excavation of 50 cubic yards or more in wetland areas on site. Since Fanno Creek is Essential Salmonid Habitat, a state Removal-Fill permit is required for any earthwork below the bed or bankfull stage. The tributary creek and ditch with seepage flow mapped in Figure 6 are also jurisdictional due t6their connection to - Fanno Creek This concurrence is for purposes of the state Removal-Fill Law only. Federal or • local permit requirements may apply as well. The Army Corps of Engineers will review the report and make a determination of jurisdiction for purposes of the Clean Water Act at the time that a permit application is submitted. We recommend that you*attach a copy of this concurrence letter to both copies of any subsequent joint permit application to speed application review. In evaluating a permit application, our agency will first consider whether there is • an analysis of alternatives that avoid or minimize wetland or waterway impacts. State law establishes a preference for avoidance of wetland impacts. Because measures to avoid and minimize wetland impacts may include reconfiguring parcel layout and size or development design, we recommend that you work with Division staff on appropriate site design before completing the city or county land use approval process. The permit coordinator for this site is Colin MacLaren ext. 244. KAWeilndstleriniferNWD letters1W002-0324.doc • . • This Jurisdictional determination is valid for five years from the date of this letter, unless new information necessitates a revision. Circumstances under which the Division may change a determination and procedures for renewal of an expired determination are found in OAR 141-090-0045 (available on our web site or upon request). A request for reconsideration of this determination may be submitted in writing by the applicant, landowner,-or agent within 60 calendar days-of the date of this letter. Thank you for your report. Site E 12 and E 20 on the Tigard Local Wetland Inventory should now be revised or annotated to show these more accurate wetland boundaries. Sincer ly, • Approve •y ab., • mt. Jennifer Goodridge . Jo n E. Lilly Wetland Specialist • :sistant Direct. cc: Brent Davis, Kurahashi&Associates, inc. . 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May 23, 2002 ; m° Wetland Drawn By: BHD ++- S.= J Project No.: 2057 Boundary Map Scale = 1:2400 (1" = 200') , Source: Aerial Photography (Soils from SCS) 1 "05L f 1 l i f W D 2002,-oza Li _.. . ,. . _ - - , ,. ,•,,i?'itt.,-4,--7',.1''-1r.,•02,:-:, • . .. .„'1•,'•': . • . . • . / . ...-- , •••r- t • . ....... . ....... • I / I 1 \ V.• - vr...... 0 / Wetla -id 1 I l 1 \ ....... - - 1 ...... - • 1 I 1 'r.::-.4" 0oundlry - ,-, \ \ 1 W501-gieti. - - • , \ I • _yiii4 ."--...,... -. .0 N Dafa Plot 5 / / .. •-.......... ...-- I \ / / / - ••••••- \\•••• = • Data Plot 4 , ) .• )• I ( I . • • , . • Dat= Plot 6 1 • I il / // . I / // sata•Plot 3' • '• ,,,,,,11 1 •••".../..'''. :Y.. 1 - creek f / --' n't / Data.Ploe-2-- 0 OP •• • .• ./ •• $ i --- -% 9_ •......• .....• $\I ,i / ., ........:,,, 0 \N W88 -----.L. • /--Ditch with seepage flow i ./ / .....--2,- 11)kim• -z. 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' '--.--• ••••,.. --.),,:.\ \ \ \ -- • - .. \ I - . .1 ' • . .1. / ir"-- ....----,, ,*• . *--,, • •,...,..''',- \ N \ \ \ ....._ --...... -..„, -.., N. , s• \ \ \u d..i/ z.i r n/.t,s • . \ I = . - . --- .... „...,.. ...\\.\\ \ N \ \ , \ \ \ • \ \ \ ••. \ / ] . • / i ,.., N \ \ \ \ \ \ s\ `, \ ' 1 \ 1 '. ‘., c••••• V.,••• ' . • ••• ' .1 . riliegriml 5111h2Tigard Oty library Wetland Delineation • Ark • • . LI ICURAHASHI city of Tigard 0 20 40 May 20,2002 . ler 2 . . a. ASSOCIATES. INC. ' • Drawn By: BHD • i • odi...4.4..a41=.:tr,Inn!! 5051-E1 r.-AO' a.t.......t.4•Ilumyt:0'...... 10000 IV aw Mr.%thaft*200 Doaser404,070004 V7000 FIGURE 6 Wetland Dethil 0 (0070$44-0042 kr 00047-mt Source: Field Survey . ' Project:No.: 2057 1 • ' ' Scale=1480(1.•.40') . • • . . . . . Dst-Pde.4 VD 2002-052:1-1 .• . • • 05/02/2003 FRI 10:06 FAX 503 644 9731 Kurahashi & Assoc. , Inc. U1001/003 -7C)3 FAX TRANSMITTAL KURAF ASI I DATE: �v A.SScP .A.-r-Jus. A TV C. - TO: C. ..t• Civil Engineering Water Resources COMPANY: k c1 \ c_Ar-,• ` �• �� • Landscape Architecture Planning Survcyihe PROJECT: j r--d,✓` 15580 SW Jay St, Ste 200 JOB NUMBER: c:.7 Beaverton,Oregon 97006 " Phone:(503)644-6842 FAX NUMBER: 2,9 - (>1 G 9 Fax:(503)644-9731 Number of Pages(including this sheet): FROM: MESSAGE: El Urgent 0 For Review 0 Please Comment 0 Please Reply 0 Please Recycle Cc: [FAX TRANSMITTAL)revised 3/03 05/02/2003 FRI 10:07 FAX 503 644 9731 Kurahash1 & Assoc. , Inc. 1002/003 May 1, 2003 (411111 CITY OF TIGARD Colin Maclaren OREGON Division of State Lands 775 Summer Street NE, Suite 100 ° Salem,OR 97301-1279 Kathryn Harris Corps of Engineers PO Box 2946 Portland, OR 97208-2946 Subject; Tigard Library Outfall DSL Permit Application 30238-RF Corps No. 200300241 Resubmission of Application Dear Mr.Maclaren and Ms.Harris - In response to the letter from Division of State Lands(DSL)dated 4/21/03 and the letter from the Corps of Engineers(COE)dated 4/24/03,we have revised our joint application as requested. Attached is our revised application Our application changes in response to your letter are summarized as follows: 1. An overall library site plan has been added to the application(Sce Figure 11). In response to Ms.Harris's comments regarding the Wall Street Extension,the site plan clearly shows a standard commercial entrance. This entrance will not affect buffer or wetland areas. This project will not build any portions of the Wall Street Project. As indicated in previous discussions,the City of Tigard Transportation Master Plan shows a future alignment of Wall Street. An initiated Local Improvement District process began the more detailed study of the road alignment. Our original wetland delineation evaluates the area along the south boundary for the proposed library. Prudently,we also made some preliminary design assumptions regarding the impacts of Wall Street on the site. Subsequently,concerns about the cost of the project and its environmental impacts indicated more study was necessary for the Wall Street Project. Until the environmental impacts are addressed, the Wall Street project cannot be considered feasible. 13125 SW Hall Blvd., Tigard, OR 97223(503)639-4171 TDD(503)684-2772 05/02/2003 FRI 10:07 FAX 503 644 9731 Kurahashi & Assoc. , Inc. Z003/003 Letter-Page 2 Tigard Library Outfall DSL Permit Application 30238-RF Corps No.200300241 Resubmission of Application If you review our land use applications for the project,the applied for and approved access to Hall Boulevard is only a commercial driveway. 2. We added language regarding the anticipated water quality standards discharging from the outfall. In summary the project includes water quality facilities designed in accordance with the current Clean Water Service Standards. The anticipated discharge will meet or exceed thc water quality standards established for the Tualatin Basin. • 3. Our application intends to construct both a sanitary sewer lateral and a stormwater outfall. The impact and Mitigation plans show both pipes. 4. The implementation schedule was shown on the mitigation plans. In.summary we anticipate a one week construction period which will occur during an August or September timeframe. 5. We added mitigation monitoring plan and outline. See Figures 8 and 9. 6. Attached is the compensatory mitigation form. We hope this response satisfies your concerns regarding our stormwater outfall application. If you have any questions,please don't hesitate to call me at 503-718-24601 Sincerely, iiktuftifeite7in Vannie T.Nguyen,P.E. Engineering Manager c: Agustin P.Duenas,P.E., City Engineer Greg Berry,P,E.,Utility Engineer Brett Arvidson,P_E.,Kurahashi&Associates Marlin DeHaas,P.E.,P.L.S.DeHaas&Associates Am.\ March 24, 2003 _ALA (4 Lawrence C. Evans CITY OF TIGARD Chief, Regulatory Branch rris OREGON Attn: Ms. Kathryn L. Ha Portland District, Corps of Engineers P.O. Box 2946 Portland, Oregon 97208-2946 Dear Ms. Harris: This is in response to your letter dated March 11, 2003 regarding the proposed Wall Street project in Tigard. The Metro RTP (Regional Transportation Plan) calls for expansion of Hall Boulevard and 72nd Avenue to 5 lanes to meet future traffic projections. The transportation system plans for the various jurisdictions examine the transportation circulation needs within their respective areas and address the local needs for circulation and connectivity that then supplement the major roads identified in the Metro RTP. The Tigard Transportation System Plan adopted in January 2002 acknowledges the nee to expand Hall Boulevard and 72nd Avenue over the long term and examined the corridor from the Tigard Triangle north of 1-5 south to Durham Road. The TSP study determined that a connection from Hall Boulevard (between McDonald Street and Burnham Street) to Hunziker Street is important to local circulation and connectivity and is needed to meet forecasted transportation volumes. This street, once constructed, would be able to accommodate 5,000 to 7,000 vehicles per day. Hence, the extension of Wall Street from Hall Boulevard to Hunziker Street is shown as a future road connection that needs to be made. The establishment of that connection, the widening of Hall Boulevard, and the expansion of 72nd Avenue are all projects that need to be done over the long term. These projects are not mutually exclusive; the only question is in what sequence can they be done. Other long-term projects in the Metro RTP and the Tigard TSP are the extension of Wall Street from Hunziker north over Highway 217 to connect to Dartmouth Street, the extension of Hunziker over Highway 217 to connect to Hampton Street, and the extension of Hall Boulevard south from Durham Road to connect to Tualatin. That Tualatin connection, if implemented within the next 20 years, would put a great deal of pressure on widening Hall and creating the Wall Street connection as a bypass. All these project together, when implemented, would require widening of Hall, 72nd and Wall Street to their respective ultimate sections. The underlying assumption in the TSP is that the Wall Street connection would be made as development occurs in that area.The strong interest by the major property owner in that area to construct the new road at this time presents an opportunity for the City to provide that connection with the property owners along that route paying for the cost of the improvements through formation of an LID (Local Improvement District). The construction of Wall Street would provide the following benefits: • Delays widening of Hall Boulevard beyond a 3-lane section for 15 to 20 years. It basically buys the City and the State more time in not having to do the Hall Boulevard 13125 SW Hall Blvd., Tigard, OR 97223 (503)639-4171 TDD (503)684-2772 widening soon. The widening of Hall Boulevard is not an alternative to Wall Street but is in conjunction with that project. • Delays having to improve 72nd Avenue to 5 lanes and expanding the 72nd Avenue/Bonita Road intersection • Establishes a route that could be used as a bypass when and if Hall Boulevard is widened. It would allow Hall Boulevard to be widened in stages. As a result, the Tigard City Council directed preparation of a Preliminary Evaluation Report as the initial step in determining the feasibility of constructing Wall Street. We must make it clear that the City of Tigard is committed to preserving, protecting and improving the integrity of the wetlands along its stream corridors. In addition to the transportation issues, the Preliminary Evaluation Report looked at several potential alignments with the intent of selecting an alignment that would best protect wetlands and other natural resources associated with Fanno Creek. One alternative alignment had Wall Street connecting to Hall Boulevard at the O'Mara Street intersection. However, this alignment would require crossing of Fanno creek at 2 or more locations and would significantly disrupt wetlands in doing so. An alignment that would bring Wall Street to Hall at the southerly boundary of the Zander property would also need to cross Fanno Creek, but would traverse along the wetlands significantly to align properly with the railroad crossing. The alignment selected, after reviewing the environmental impacts and potential crossing points along the railroad, was a point approximately 350 feet south of the O'Mara Street intersection. This alignment was selected for the following reasons: • It crosses Fanno Creek and the associated wetlands directly without traversing alongside that corridor. • It provides an opportunity to remove two man-made ponds that are heat sinks that contribute to a rise in temperature in Fanno Creek during the summer months. D.E.Q requires stream temperatures to be reduced to 64 degrees throughout the Fanno Creek Basin. Moreover, the Fanno Creek Watershed Plan recommends that the highest evaluation criteria for water quality projects should be to reduce in-stream temperature. Construction of the proposed Wall Street at the selected alignment would provide an opportunity to remove two sources of heating by eliminating the ponds connected to the west side of the creek and creating,a free-flowing stream that would feed directly into Fanno Creek. • The current alignment of O'Mara creates a dogleg configuration with Edgewood. At some point in the future, O'Mara needs to be realigned to remove that dogleg. The selected alignment allows for future realignment of O'Mara Street to provide one 4- legged intersection with Hall Boulevard at some time in the future. The new Tigard Library Project and the Fanno Pointe project are not dependent upon the construction of Wall Street. Both projects are required to widen and improve the easterly half of Hall Boulevard to include sidewalks, bike lanes, underground drainage, and undergrounding of the utilities. A proportionality analysis of both projects shows that the Hall Boulevard construction plus dedication of rights-of-way and slope easements for Hall Boulevard and a future Wall Street project is basically all that can be required of both projects. However, it is the City's desire, in conjunction with ODOT (Oregon Department of Transportation), that the two developments access Hall Boulevard at one common access point. The City construction projects Letter to the Corps of Engineers Regarding the Wall Street Project Page 2 of 4 must be consistent with the adopted TSP and it makes good sense to build enough of the selected alignment to provide a consolidated access to the already congested Hall Boulevard. As a result, the City has decided to build the Hall Boulevard/Wall Street intersection and approaches as a separate project using a combination of Library, Fanno Pointe, and T11- (Traffic Impact Fee) funding to build enough of the future Wall Street to allow for that joint access to Hall Boulevard. The funding contributions from the Library and the Fanno Pointe projects will be used to construct the improvements on Hall Boulevard. The T11- funding will provide any remaining funds needed to complete the Hall Boulevard improvements and construct the approach on Wall Street. The City proposes to construct 425 feet of Wall Street to provide access to both developments, allow for vehicle stacking and turning movements, and provide that one common access to Hall Boulevard. The driveway of the library, as shown in the land use application,_coincides with the Wall Street alignment because it makes good sense to locate it where the future construction of Wall Street is projected to occur. I again stress that neither development is dependent on the Wall Street leg being constructed. They can and will be constructed as shown in the land use applications if the City is not able to obtain the permits to build the Wall Street approach in a timely manner. However, they will have to connect to Wall Street, if and when enough of that street is constructed, to provide that common access point. The proposed street construction required to provide access for the two developments would require intrusion into the wetland only in an area that projects south from the main stream corridor. This portion of Wall Street proposed for construction would remove one of the man-made ponds and create a free-flowing stream. The proposed construction would not compromise the integrity of or narrow the Fanno Creek wetland corridor. That area, because of the man-made ponds and the hodge podge of existing connections, is in a degraded state. To compensate for the removal of the degraded wetlands, mitigation plans will be prepared to enhance and upgrade wetlands elsewhere in the area, possibly north of Fanno Creek on the property. The proposed LID to extend Wall Street the rest of the way to Hunziker is now going through the process for LID formation in accordance with Tigard Municipal Code Title 13, Chapter 13.04. The City Council has reviewed the Preliminary Evaluation Report for the proposed Wall Street_. LID and has directed the preparation.of a Preliminary Engineer's Report as the next step in the LID formation process. The Preliminary Engineer's Report is evaluating in greater detail the feasibility of fol ming the LID to construct the improvements. At the Council meeting on March 11, 2003, Council was presented with an interim report on the progress of the study. The Council direction at that meeting is to proceed with completion of the Preliminary Engineer's Report. Completion of that study would provide Council and the property owners involved with enough information to decide whether or not the LID should be formed. If the issues are complex enough to prevent construction of the improvements at this time, Council may decide not to pursue formation of the LID. However, the street may be extended at some point in the future if the issues are resolved appropriately. As explained earlier, we are convinced that the selected alignment is the best possible one taking wetlands impact, environmental enhancement opportunities, and flood plain issues into consideration. Letter to the Corps of Engineers Regarding the Wall Street Project Page 3 of 4 • In summary, I reiterate the following points: • The widening of Hall Boulevard, 72nd Avenue and the Wall Street connection from Hall Boulevard to Hunziker Street are all part of a package of projects that must be constructed to meet future traffic demands. • The Tigard Library Project and the Fanno Pointe Projects are not dependent on the construction of Wall Street. They are required to widen Hall Boulevard and provide necessary rights-of-way and easements. • To allow for a common access point to Hall Boulevard, the City is simultaneously pursuing construction of the Hall Boulevard/Wall Street intersection and approaches. This includes 425 feet of Wall Street to accommodate anticipate turning movements and stacking requirements. • The alignment of Wall Street was selected taking into account potential wetland impacts, opportunities for enhancement of wetlands, environmental concerns and geometric requirements for collector street design. • The construction of Wall Street the rest of the way to Hunziker Street is a decision that Council and the property owners need to make after completion of the Preliminary Engineer's Report.This street connection is considered as part of the long term plan and will remain as a future project, if the LID is not formed to perform the improvements at this time. We request that you review the project for the Hall Boulevard/Wall Street intersection and approaches with the information provided here in mind. If you have any questions or need additional information,please do not hesitate to contact me. Sincerely, (24 P. ., ,,- USTIN P.DUENAS,P.E. y Engineer c: Tigard Mayor and City Councilors William A. Monahan,Tigard City Manager James Hendryx, Community Development Director Division of State Lands (Colin MacLaren) Oregon Fish and Wildlife (Jim Grimes) Clean Water Services (Heidi Berg) Vannie Nguyen, Division Manager,Tigard CIP Division Brian Rager,Tigard Development Review Engineer Dick Bewersdorff,Division Manager, Current Planning Brad Kilby, Associate Planner 1:Eng\Gus\Letters\Letter to Corps Regarding Wall Street Project.doc Letter to the Corps of Engineers Regarding the Wall Street Project Page 4 of 4 /K417,AS\ DEPARTMENT OF THE ARMY 12 __, PORTLAND DISTRICT,CORPS OF ENGINEERS a il@,I ! POST OFFICE BOX 2946 ,y PORTLAND,OREGON 97208-2946 TESo March 11, 2003 REPLY TO RECE11VED ATTENTI ON OF: Operations Division Regulatory Branch MAR 1 2003 Corps No.: 2003-00137 CITY OE T1GARD Mr. Gus Duenas City of Tigard 13125 SW Hall Blvd. Tigard, OR 97223 Dear Mr. Duenas: This letter refers to the proposed Wall Street extension project located in Section 1 of Township 2 South, Range 1 West,in Tigard,Washington County,Oregon. Although an application has not yet been received, your project has been assigned U.S. Army Corps of Engineers (Corps)ID No. 2003-00137. Please reference this number in future correspondence. A meeting with the City, its consultants, and various State and Federal resource agencies was held on March 4, 2003 to discuss permitting issues related to the project. The City is aware that a Corps permit will be required since the project proposes to impact wetlands adjacent to Fanno Creek, a water of the United States. It is the Corps' understanding that the City of Tigard(City) developed a long range transportation master plan that includes an extension of Wall Street from its current terminus northeast of Fanno Creek and the P&W Railroad tracks southwest to Hall Boulevard. The extension would require crossing two sets of railroad tracks, one of which is planned for use as a commuter rail line. It is uncertain whether the City will be able to obtain the required authorization from the railroad to complete the Wall Street extension to SW Hall Blvd. The extension is to relieve traffic congestion on Highway 99W. The City acknowledged that widening the existing SW Hall Boulevard is an alternative to relieve traffic congestion on Highway 99W. The City indicated that the first 425 feet of Wall Street north from SW Hall Blvd.,Phase 1, is associated with two developments that are proposed for construction in Summer 2003,Fanno Pointe Development and the new City of Tigard library. Both projects received approval from the City and from Oregon Department of Transportation (ODOT) with access directly from SW Hall Blvd. The City stated that both access points were conditioned as temporary and will be removed once the Wall Street extension or spur is constructed. The City proposes to use easements from both Fanno Pointe and the library to construct Phase 1 of the Wall Street extension. The City stated that both projects are contributing funds to the road construction. ..-, ....., -2- The Corps is concerned that impacts to the wetland and creek system were not considered during review of either of the above mentioned projects, although both do have an impact on the system since each will be contributing funds to Phase 1 of the road construction. Please be aware that when an application for the road is submitted, the Corps will examine alternatives to the project. The Corps will also consider Fanno Pointe Development and the new library as part of the project since they are interrelated aspects to the road construction. Alternative access designs will also need to be addressed. Please be aware that City approval of the two developments, regardless of conditional access, does not guarantee Corps approval of the Wall Street spur. The Corps will look at both direct, indirect and secondary impacts to the project. As part of the Fanno Pointe approval, Clean Water Services required the developer to restore the creek channel south of the proposed Wall Street alignment. This work will require authorization from the Corps since the project will impact a water of the U.S. The amount of wetland and stream impact will be considered in the cumulative effects analysis for any proposed project in the system. If you have any questions regarding Corps policy or the peimitting process, please contact Ms. Kathryn L. Harris at the letterhead address or telephone (503) 808-4387. Sincerely, i rwrence C. Evans Chief, Regulatory Copy Furnished: Division of State Lands (Colin MacLaren) Vannie Nguyen, City of Tigard