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ZCPD24-81
POOR QUALITY RECORD PLEASE NOTE: The original paper record has been archived and put on microfilm. The following document is a copy of the microfilm record converted back to digital. If you have questions please contact City of Tigard Records Department. $t L. , .,. s; / 11' ` t 1 i YL;;I',/, • i r 0 I Losl t, Inc. #281030 Z0 PD24-81a 8105 SW 8unz.iker 281 1BD lot 300 , • Also M4-81 fl, Y:- f r I•� , r. • • • • a ' ka • • •r • M. lr Y , �1. s ry: . Y Ff • f. 1 �,..� _..,,�. ,. � .rb. �:,�.a,°.«:•.'a...-��u•uan�r...n ����� M,,�rn�-.�.^r'.+f..,�+r......,,,a..acr+...6M,-.x�i .............. _;. ...._.w.��,:..,,....,. _..,.,... ,...._...._.,...,..,-, .s ,..,.-.........,. .-.._....._. -..,.... ...,:.... .,.:..:..-mow..,.,.�,r-... ..�.:..:_:.M ....4.:,.. .._„,-.,. 104 t CflYOFTl .'i WASHINGTON COUNTY,OREGON June 13, 1984 • E. Howard Losli 8015 SW Hunziker Road Tigard, Or 97223-8286 Dear Mr. 14811: • Z have discussed your proposal to perform the required excavation and fill work on your property in stages with Frank Currie, Director of Public Works. , After reviewing your letter dated April 19, 1984, we concluded that the Sensitive Lands Permit (M 4-81) would not prohibit performing the work in this manner. The excavation and fill work described in the Sensitive Land Permit application (M 4-81) may be accomplished in phases. Upon completion, written confirmation shall be provided by Dames and Moore, the author of the engineering plan, indicating that the excavation and fill was completed in - conformance with the report Foundation Investigation Proposed Warehouse, Tigard, Oregon for Losli, Inc.", June 27, 1983. If you have any questions, please contact Frank Currie or myself. Sincerely, KeithS. Liden 1' K Associate Planner • (ISL pm/0475P) CC: Frank Currie Building Inspection pJi 12736 S.VIt,ASH Pa EIGX 23397 TIGAHn,OPIECON 0723 PH:639-4i 71 Jill t 1 ,:.;< ,.•., .,I,�.,.. ....- �, A �.:, •�-.:U..M ;� :, S','"''w.wr, .. '.,y u .•.rTi •,r'tlt%t n .A^rnx e'avv aao. .. .00 ( INCORPORATED ESTABLISHED 1899 • AREA coor., 1503/SE3/1•0750 11016 11,W I 11.1NZIKI4I I ROAD I IGARO,011LCJON • April 19, 1984 City of Tigard P.O. Box 23397 Burnham and Ash Ave. Tigard, OR 97223 Attn: Keith S. Liden Subject: No. M 4-81, Hearing OfEicers Order In connection with the proposed work outlined in M 4-81 and the six conditions included in the hearing officer' s order, the undersigned applicants request clarification . and approval as follows: Item 1. We understand this condition has been satis- , fled by Mackenzie Engineering,Inc. by utiliz- ing natural reseeding on the fill permit draw- , ings. Complete landscape and sprinkler plans will be prepared at the time of the building . permit. Item 213,4,and 6. We understand that Mackenzie Engt. 4 has provided this information to your engineer- ing department and that agreement has been reached on a modification of item 4 per attach- ed letter of November 18, 1983. Item 5. We are prepared to dedicate the flood plain lands in accordance with attached surveys des- cribed as Tracts "A" and "B". We would like confirmation that the dedicated areas will be included In total site area in • determining the building size and location when a building permit is requested. Please note and correct an error in the date of the heat- ings officer' s order. It reads 19820 and should be 1983. CUSTOM STAINLESS stteL OA ALUMINUM PABIlicAtONs kivittAL f, Page 2 We would like to proceed now to complete all details and. receive a permit for excavating and fill required to pre- pare the site for a building. We expect to apply for the building permit later when the market conditions are bet- ter. In regard to the timing of the excavation and fill work, we would like your approval to proceed in phases, rather than doing the entire job at once. The reason is that our excavating contractor estimates a cost of around $112,000.00 including 9700 cubic yards of fill material at $6.00 per yard or $58,200.00. We are not in a position to pay this amount up front and would like to start by excavating approximately 10,000 square feet of the building area, then waiting until suit- r able fill material becomes available, either free or at a reduced cost to us. As fill material is available, we '. would extend the excavation and fill until the entire site is completed. Please let us know if this plan is satisfactory, or if you have any questions we can answer. Yours Very Truly, E. Howard Losli .,... ,....... .,, ,.F, „.,.,..,.. :..„., .,,,....., .. • ... .., . W r urw w o+ r a k ,xu u,au, ;; a n { I ♦, t * 1 Jim 1 Weddle az ssociate PROFESSIONAL LAND SURVEYORS ' ' • 1750 S,W.Skylino Blvd.,Sulto S D IE 1. E W I T.i.phono . . Portland,OroQon 97221 ‘ ry 1 �, t 2724(J•S� , • 1 DEC A 8 19 3 • ` 0 ■ r Mackenzie Endneering incorporated si , . _._,� Losli Manufacturing , , Dec. 421 1983 ' Property Description File Noe 81-1070 Description of a tract of land situated ±n ,the Northwest one-quarter (NW') of' section 1, Township 2 South, Range 1 West of the Willamette Meridian, Washington County, Oregon described as follows Commencing at the Northwest corner of ,the W.W. Graham D.L.C. No 390 thence South 83°02°20" East along the northerly line of , said D.LUC0 i` •. 789.83 .feet to the northwesterly corner of, that certain tract of land ' described in Washington County Recorders Fee No. 80030552, parcels 1 +: and 2 and the TRUE POINT of BEGINNING of the hereinafter described tract of land; thence South 12°l,5 o O7" .West along the westerly line of• said tract 122.34 feet; thence South 77°44153" East, 171.53 feet to the easterly line of .said tract; thence North 8°25"09" East along the east • erly line of said tract 137.'68 feet to the northerly line of the afore- mentioned W.W. Graham f.L .C1 • thence iNorth 83 02 20 West along said '+ .� . o ° of ( . line 16302• feet to the point of beginning. o 4 , SUBJECT TO a 30' foot wide easement along the easterly 30 feet as tea- ' arde4d in took 641 Page 649-654, Washington. County Deed Records. . . 4 . . , { , i. ,., . . i M a 4` �,4r • 1 :HI.+W,.44...- .U,.4.4..1......4 L.4444.42 4 r . 1 ' 14sot Ida isa.„4,60. #9 ' ■ . . ,r ,.Mwei 4r.yy C)x,,.,1444 44 4w►wh4.4 4.^ .�r ti t4 G 1 � i r LAMES 0 N' /IDLE 1 i ` X , N. Y o J 1 4 • * » 1 i 1 • ' 7, 4/it/COle, t PO/ 60,1,14/1,/' Dt C, '3g /y • �l7 4 �R ""-'fir 1 i •1 , i tiii, \ /4,3,44: ••4141 41v\ . 0 0 . ......____,...7.7.........„,....._-------s ;,,,,,,, . . ts.'',04' .. I . . . \-\\\ , i ,W - -,, • 77,,„'■ N. 4cc '5 .. ... 1 , r i / i$,I A / / 1 2„ g0° , r\ 1 I I . 0.,, , 1/4.,- s'CL.e.de. : 4 1 .is. le, fki . n °6Q() i .. 4 ' 14■1 '0 cl / 41N , ' .lo ord I\ . / 4 ti /.! i s ! ' 1 f,O 4 / r„„.2.4-ti k l P4 4),,s0'b • • i i . . it). . 1 �� I . 4.'" / V■ 1 1 I' t n "t,.,'''.-...___ 1 v ./ , iV . 1 a r. ... , �.,�_ 3...,,, .s.o., ...... �. 1 4.. 7„,,, ,,,..„...... / :. . . , 1.J, , L G/ r ■ ■ i. , ■ J ' , d's. tifitotcy s • i, ., , NS . „,Q V Jid.«8++3. Weddle . ooielte PROFESSIONAL LAND SURVEYORS 1750 S.W.Skyline Blvd,,Saito 8 Telephone Portland,Oregon 9722,1 g3 ..� D ` Losli Manufacturing Dec. 21,' 1983 Property Description File No. X81-1070 Description of a tract df land situated in the Northwest one-quarter «„ (NW? ) +of Section 1, Township 2 South, Range 1 West of the Willamette , Meridian, Washington County Oregon described as fala)ows ■ Commencing at the Northwest corner of the W.W. Graham D.L.C. No.39; thence South 83°02'20" East along the northerly line of said D.L.C. 769.83' feet to the northwest corner of that certain tract of land des- cribed in Washington County Recorders Fee No. 80030552, parce !,s 1 and 2; thence' South 12°15'07" `West along the westerly line of said tract •' .1 . 122.34ffet feet ttotthel�TRUE POINT of BJEGINNING; thence South 77°44'530 East ' . .. a " .� , curve 4 � ,limning of a non-tangent 6'0.00 foot radius c left; thence in a southwesterly direction along the arc of said curve i •.� ' . , o g 77°4,053° g ' , , 57 15 07 VWest 84.85 feet) ; thence North West 5.00 e thence ! f 94°2 5 �feet through� a central angle of 90°00' �the long chord bears South � South 12°15'07" West 455.00 feet; thence North 77°44'53" West 5.00 feet , ' thence South 12'15 '07" West 383.45 feet to a point in the a\orther1y right-of--way line of S.W. funtziker Road, 60 feet wide; thence North 61'00'53" West along said ,right--of-way line 10.44 feet to the westerly ., line of the aforementioned tract described in Recorders Fee No 80030552 thence North 12°15'070 East along said line 895.;45 feet to the g point of beginning. , , 1 i r a 4 ( 7t,i44( , . . . .. . i .--r - "k '' . , " , ■ t U ` �i+11 b� ( i i r 1 i. v.. .T"tl. ;U�. z :.... ,..:.•.•..rau..•.. .,n.;, o' d.-,.. _.. a-.e1u ���L_,- r.rwr. rn..wr.n-.aori.».n ........ - ,,rn..w�.�. r' w.' ., ' C ■ • . .0. * C . • ,,, r , AM/�'0M, 6vfr/ lIJ�R,ors Lz�.0 X39 76'9,6:37-7--- . h 1 ' , " 5 (.` 30'4 4455081,40 7- . y? s3.„ ' ( uc11,2 0 CAI c. 4, . ,*. . • 4 Ccir,..5.) . S44400 . ' isss,to 44.4 I i 1 i I . 4 . ' 0\ ‘1 llik 4 41.7740 , . / il I. . 't''. I 13 ,pmi is. . ': .. . /0 . / . Iti .. , + f% " t\ .. 1��f O�Q / bhi . i4) 1 .41) ' cy, ,-,. 4 % a AA 4 ,` 4th, 4& /. I i e 1`` - - q+ . 1� I 4 1 4 . - 4.. �`� , . . ., i , �' '. f O ' / 1 ll /o,, Of re) ' " G """ ill } 1 , y} ', .,,. 2 iO,3 4 i /‘'/-'6A, i t , ' ' • t r 1 «n..,::,pus .',t". `•� ,li 8.._.. yt�t.k1 I'_' .. )10r, MACKENZIE ENGINEERING INCORPORATED RECORD OF TELEPHONE CONVERSATION JOB Losli Fill Plan JOB NO 181030 12/14/83 3:30 DATE TIME. INCOMING CALL 0 Frank Curry PERSON OUTGOING CALL 0 City of Tigard COMPANY. PHONE NO. SUBJECT: Losli Fill Plan REMARKS I asket Frank if he had approved our latest application for ffillars_ ± ardifhe had any additional requirements. He indicated that these requirements had been sufficient and that he had forwarded hiJLAQPITY11191LISLthe other agencies with the City that are involved. We then discussed the requirement by_the Hearings Officers for dedication of the unused portions of the property, lying under the 100 year flood plain. I indicated to Frank that the plan submitted to the Hearings Officers contained approximately 60' of parking area north of the building to the top of the bank. It is our understanding Distribution; that the dedicated bropertyj uld be somewhere in the vicinitY of Frank Curry the top of the bank and extending north to the north boundary of the in BoWman 2Lpyia:oyLgagoert . OurrT . uestiohreardinthis dedication involves the Howard Losli stream area along the western boundary of the property. It is Unclear . to us whether the City wishes to have that property also dedicated FILE El or not. Frank indicated that he felt thatLtkep1poertYldbesF dedicated but that he could accept an_easement to the city11152Arig_ them to have access to that portion of the property for cleaning and maintenance of the stream Channe Ighifilit" • • 0690 8.W, 8ANcRoFT STREET • PoRTLAND, ••REGoN 97201 • PHoNE 5o3/224,9560 0 f • November 23, 1983 MEMORANDUM • TO: Planning Department FROM: Frank Currie, Public Works Director -i-7_-,--' SUBJECT: Losli Site Proposal on Hunziker I have reviewed the proposal of Mackenzie Engineering, Inc. , and Dairies and Moore and will defer to their professional presentation for this 'Project. I had some concerns about the rip-rap size relative to some criteria besides total physical analysis. However, the design is good and in sufficient detail that if proper inspection is provided, my con- cerns should be aieviated. +e. • MACKENZIE ENGINEERING' TNCORPORATED November 18, 1983 TM N Mr. Frank Currie Director of Public Works City of Tigard 12755 S.W. Ash Avenue Tigard, Oregon 97223 Dear Frank: RE: Losli Fill Plan Project 281030 Please find enclosed five sets of plans and one copy of the soils • report for the referenced p project. Within the soils report, you will note a supplement dated August 3, 1983 that addresses size of rip rap rock to be provided. I have also enclosed some material from the Oregon State Highway Division Hydraulics Manual that outlines required size of rock for gi.ren stream velocities. As to your concern for vandalism of the rip rap material, I believe that pedestrian traffic through this industrial area is nearly 'non--existent, and that the Losli operation will police this sort of trespass. Arrangement for the dedication documents for the area to remain in the drainageway is currently being handled by the owner. any q ofethe attached mat a1it�If � l have information required for review y ou any questions,estions, please do not hesitate to call . Sincerely, 09-e7 C‘9.-e/041€ 6 dikt Gary . Thornton, P,F Proj ct Manager cc► Howard Losli Lin Bowman Principals: Thomas P.Mackenzie Erlo t Saito M, N,Ptesheas 0600 S.W. aANCi oPT STREET $ PORTLAND, OREGON 9/201 • PI-40N8 503/224,956o' ^.•^ w.;tw.'.:7=..7-..ru.il:ala.ASxerrcM1•'aurc tr i N, , , r (— (L.., ,. „ I BY Dc (•Ae-LCNI _DATE 11--1('•13$. LOCI-1 MACK(ENZIE ENGINEERING INCORPORATED CHKD.BY DATE.,._. C...1 P :-f cc.tF'Itre ' "�, '� �`. �'"� n.("L` CONSULTING ENGINEERS * __ .�St JOB, SHEET NO, OF 1 f • t ,0t 41 r)fJr«,r)t.I c7-rA,` 1-1-ic #i,ik( .0 tAftS(6,0 (-1,.4PRAVLA .S w1 4v` C..M • r , Pi4A m M ` :, \ - c. ii-1 i M ,p . : r :... „ 1 1 t rte' 1 ru 6 ,:',7",,P; ,$y«y'� 1 'fawlt r Pr S17:11'Y , r&;�v::a �".� �4+"' p0 "" 1,.) (( A r i GM f4 't:''�-� a. � 4+14x014 ^a+"trfi 1 yy.�r:.x t•.'r;`,'�l r ".f , A,ti`C�:.-.R• " I 'All ,, �� PAM U 4 b;. 14 '�.:b 'F #4 t .. .'1 as 11a'o rai+ 6'f m'_ }-,,,,fr 'S�1tY�A�M"tiY'5 A- A I' �,° cr� 1 , r1 . ,:7414m).,:.--,r,. 11,4-1 es = 1 ' n=« i p' v /''i 1 , ) • i It `. tip. ; ..>v to, t q., ye : ( °A) a • i 't i i 'i ., ,' .,..clAS),PROftsm.H. , M . 9 10505, .4 • ' 9'''''''fr! *'iri .141,$)N., ''''''''''f'-'-..e.AudkpAtpi,,,, ,..„-. .,..f...+,-',#: -,-,. ,,.cr.-i,go. .... . . I ' { f: 4 • i a, t ' • r I. • • ; � A Y /din ikilif CITYOFTIARD WASHINGTON COUNTY,OREGON • September 21, 1983 Philip R. McCurdy Mackenzie/Saito & Associates 0690 S.W. Bancroft Portland, Oregon 97201 Dear Mr. McCurdy: Enclosed is a copy of the Hearings Officer's findings regarding the Sensitive Lands Permit for Losli Manufacturing, Inc. I have circled the conditions that must be met before the Building Department issues a fill and grading permit. The Public Works Director would like the engineering plan to indicate: at least a two foot thickness of rip rap; the quantity of fill and excavation below the 152 foot elevation; and an interim drainage plan that shows how the fill will be protected before the future storm sewer is built. Sincerely, / r 40V. t a r Steve Skorney, Associate Planner • 6 2755 5,W ASH P.O,8OX 28807 fi IGAHD,b1IEGON 9722 PHI 689.41 it ''''..7.7+,7•-•..x...- - - ,,,•', , _ ,_. ,, , 1,'•,". ., ., '• . .... . • • ..• '• , . .• ... • r ''' ,,I.,:,-• .• .. : \j,,,,... , / , •,'; ,t,,,,, i • ..• ,• ,• i 4. . . . : ,,•,,,, • BUILDING PFIMIT APPLICATION TIGARD DATE de' '16'43 is .... . ;.. • ,.., '• ,• THE UNDERSIGNED HEREBY APPLIES FOR A PERMIT FOR THEWORK HEREIN INDICATED BUILDER PHONE. OR AS SHOWN AND APPROVED IN THE ACCOMPANYING PLANS AND SPECIFICATIONS. OWNER PHONE •. . LOT NO. ' ,s-- ....,....._ '' ..,. 2'LVtM ./09AMA_ILC/Vt.) 1./ /Ni JOB ADDRESS f5O15 . LW%1. le-e6e. r12 . , I 0. r„,,. , , .z' IN&c Ant-III ""emAct43Eduete. 45Artz) 41egots. •..' ENGINEER .• ' eutinen ADDRESS DESIGNER eerete 41W, f ANegeer, lige ,;.. , . • ......................■.••■• es,.11 - STRUCTURE 0 NEW 0 REMODEL 0 ADDITION , 0.REPAIR 0 RENEWAL • FIRE DAMAG • • DEMO.L.ITIOtst,4 .: rn j:' • 0 RESIDENCE 0 COMM 0 EDUCATIONAL 0 GOVT 0 RELIGIOUS 0 PATIO 0 CAR PORT 0 GARAGE 0 STORAGE' 0 SLABu FENCE OCCUPANCY . '"22._1_. _LAND USE ZONE- & &I P _BLDG.TYPE :NE ___,FIRE ZONE PLAN CHECK By „ HEAT, • ote. .4..)eg., ALsv,..)01 • : _.:..;,... .. .• • ‘24 ........11. .......1:21g AW 1 lj i,52...... . . . . • 4' • # • - ' - , :.' .... _ . .............___ . . . .• i .,.;.: SEWER'PERMIT It i , . • ---: "CV* - E.r .• 0,CC.LOAD, FLOOR LOAD HEIGHT - NO.STORIES AREA NO.BEDROOMS VALUE - • BUILDING DEPARTMENT . SET BACKS FRONT REAR LEFT SIDE RIGHT SIDE • : : Pcrrnit , ' ' . , • THIS PERMIT IS ISSUED SUBJECT TO THE REGULATIONS CONTAINED IN THE BUttLDING CODE,ZONING . REGULATIONS AND ALL P2PLICABLE CODES AND ORDINANCES, AND IT IS HEREBY GREED reArTHE plan.chack , . . , WORK WILL BE DONE IN ACCORDANCE WITH THE PLANS AND SPECIFICATIONS AND IN COMPLIANC:, WITH ALL APPLICABLE CODES AND ORDINANCES.THE ISSUANCE-OF THIS PERIAIT DOES NOT WAIVE ,• , 1SOb-Iotal• '' RESTRICTIVE COVENANTS.CONTRACTOR AND SUB CONTRACTORS TO HAVE CUPd,RENT CITY BUSINES.i..`, . UCENSF.SEPARATE PERMITS REQUIRED FOR SEWER,PLUMBING AND HEATING- • , . :Slte Tan.,* 4 , ,' , -• :un— i . • Total . , . . CANTOR kte- t,t_ - Ag __ -,-r- .. . , ..'• POOS AP CANT OR GENT • .. ' •••••.•••l••••••l••• ••••••.••,l•••••••••••■•.••••••••••OMN••■•••••••••• ' , •. . Receipt No. IA LE. , FA • • Approved ADDRESS HONC . ■■••ma.................01/./M _................„. ___,____I • • 1/ 0s:1,-1 f2.0'-‘4Z trTWAi ! . •:. St WE R CONNECTION S MAto sw . INsciloN . , lik1( Got' .ele) .• • : ................._......._................................._________....„. ... SEWER SURCHARG.E 11 • .. ,. „ ,• , , .--..A—......--------. . .:. 7 ,• ti- , L,- ,- ,. 1 , ,› ... . .. . ,....„„„...„..,_ . .______, ;. . ... . .. , , ,........... . .. "- -- — ' ,,41L,.- . ,. : ,!/"._giLL -, ' '''.. .: . .-_ ,..—(tL .'. ,..'. . . ,:„. ,...„ ,. . . ,• .... ,,, . . „. , . . . • . C . , '• ,',. 14* Dames& Moore 1220 S,W,Morrison Street: — Portland,Oregon 97205 (503)228-7688 August 1983 Mackenzie Engineering Inc. 0690 S.W. Bancroft Street Portland, Oregon 97201 1,1 Attention: Mr. Gary Thornton 2ECE19 ED 1 G 9 Gentlemen: AU 4 8j Foundation Support Proposed Warehouse Mackenzie Engineering Incorporated Tigard, Oregon for Losli, Inc. The following supplement conclusions and recommendations presented ' in our June 27, 1983 report for the subject development. This supplemental information was provided verbally on 'Ally 1 and 21 , 1983, and is documented here for the record. o Refer to first paragraph of page 4 of report Site Preparation. Due to the potential for high settlement of the surface black clayey silts, the report calls for removal of the upper 2 to 3 ft and re- placement with compacted granular fill. We have considered an alternate scheme wherein the surface soils are not removed, except for surface Stripp- ing, follcwed by installation of engineered granular fill to the bottom of floor subgrade above which a 4 ft thick surcharge fill is installed. With this scheme, there should be a minimum of 2 1/2 ft of compacted granular fill between bottom of footing and original material. The preloading Will affect $ettlement of the three load conditions appearing in the tabulation on page 8 of the rcport. The anticipated Settlement for the three load conditions indicated when a surcharge is used will be more nearly represented by settlements indicated in the tabulation for 'black clayey silts removed replaced with coinpacated fill'. o Refer to page 6 next to last paragraph • An alternate to placing conventional interior footings at a depth of 1 1/2 ft beloW top of slab, would be to thicken floor slab to 1 ft to simulate a footinq at the loading locations. k : I• - �.+wv.....N....m..^,-r..:..rw..:,....-.._.........-r........ .,:.«x.e...0 .:..+......:......:..:......n A.?... _....k.:....._.ice-.-... .._..:.._. r ,. .n._r...... .....nom........_.,.v .....,«............_.... .___._.r_.._.._....... _i_.w..I"/i.-........ ......1............u.t l,. ...,tY.'...a-.a......._.-rr-..r.._......._ jqR i y d Dames & Moore Mackenzie Engineering Inc. • August 3, 1983 Page -2- o Refer to page 9 second paragraph. 1, The sloping bank will be subjected to quite low water velocities, hence, a rather low scouring impact would be anticipated during flood con- ditions. +, q. y may • . . Under these ^opndtion , a quality of rock ma be utilized (, than indicated in the report.ort. The specification could be relaxed to utilize a 12 its. thick layer of 6 in. minus fragmental rock. Such rock is available at various rock quarries. The rock could be installed on a filter fabric o placed on the excavated sloping native material. A suitable fabric is TYPAR, a product of DuPont. o Refer to page 10 tabulation. The u'.3e of a geotechnical fabric such as TYPAR would reduce thickness of subbase for indicated roads and parking areas by 5 in. Yours very truly, : • DA & MZZE014...c../ • Irving . Olsen, Partner I 0� IEO:lld (3) 13377-001-04 t ,y { i . , , • .m.-t.,a,. • Y . ..,u 1 , ♦ T .. -- • .. .., t 'k 1w J Jr..:.A:l 13;i,u:4W4 ..N tl:l.. 1 1 ' . . . .‘ . , 1 r .. • ..' , , 4 . ■ • t . . . . ■ ■ r . . . . . . e' ft N 1 k, •,,, %, ,• ,• .,„,.,.., ,...,, . ,,... ... ... • , I, , ••• ., . 1 . 1 . ,. . . ". .. I . . • 1,,,,, ..• . , , . .: _ . . . , .,,, .. . . • • . •• . . ,,,,.... I r., •# , . C 7 1J WE R 0 , JUN 28 198d ... : [ Mackenzie Engineering Incorporated . ,. .',;,:,',..•:,,.:1;',\I'..,,, ,,,,..i.,-. 1:,';',..::::,-,1i",:,.,.',.:'...:';f.';.;,'.1,:::',,,',.',-,i4.;.,1','..,2 '..;r:i::,:',4:f,j.,'fi.':.,*,,,,,,7,',Ar4...,:o.,..;„`,,,:i',y,",.-:,,,,,,',,z.„:‘,'„.2n,Ajti;.i.,:„,..:7.;5,,,,:i,..v;,;,,:::,q,';,,q,:y. . . , • REPORT ,.. FOUNDATION INVESTIGATION • PROPOSED WAREHOUSE TIGARD, OREGON • FOR LOSLI, INC. ,. , ‘ JOB O. 13377-001-04 . 1 jUne 27, 1983 . , . . • . . ':!,..:;;I:,,,:':,;',".::1;!:.,;;4,',..,;',:',':',. :":0....,„',,,::;:i,„s-,..','- '";,;,,:.,:t:::::,..1:',.,....*.,';',-: ''' '..'::11';',:.::;;.*:',,.:::::;:',:::',',.,•,.,,,,,%.„..‘,!',...:..4,..C..,„;a'.....,,,%,;i7ii:Pi.,...,fr':-''..`:):,.',';',.',':.=. . 1 , J ...■ • . • ,C.'',6'''''Oe' 111,;"''. 1.1::.;,',..,,, ''A. -:,:',„`,:t.'- ,' " '''' ' ''1' i'. * ■' ''" ' '1, '''''''I' ''''',.°' t ',=.'''' ' , ■ , ? ,_;,,,.,',1„,-„.- ''.,r;s%.*,,,,,„ 1,.... -,`,°,: '+',;', " . ," \,',,.;.°', '',,..;., 1.,.!''4,C,. 1.,,, ,, ,,`,. '.,:,s, ;. `,: •''••• , •., . . • PORTLAND i OP'0,0 ON . . ' ., .,,t.,',424r.“,,,;4,.- ..ru- • N AL • ',"^,itle„? °N. , C - ill it , • .l • •:1 ..EGO14 4e. 43") i I, • .ir ' . Darriesik Moore 1.220 S.W,Morrison Street 4 ' Portland,Oregon 97205 ,. (503)228-7688 June 27, 1983 Mackenzie Engineering, Inc. 0690 S.W. Bancroft Street • Portland, Oregon 97201 Attention: Mr. Gary Thornton • ' Gentlemen: • a Enclosed herewith are five copies of our report entitled • i "Foundation Investigation, Proposed Warehouse, Tigard, Oregon, for Losli, Inc.". . w We appreciate the opportunity of assisting you in this work. ` If you have any questions, please do not hesitate to contact us. Yours very truly, • DA S &‹ di26.1.1i , • is . ,, i ...., T e_ ' 1 I ing j . Olsen, Partne 2/2;4? 10X, /2,:(24/112c* i Michael F. Pisarik, Project Engineer IEO:MFP11d e .:...tip ,-,.., _,,.. .._..... 1 L e✓n ..,..y...A..tea♦ :/» a.. 4. 1,. w .. -Ar I! ri:. .... a t1' ii ''ik' , A INTRODUCTION { 1 This report presents the results of a foundation investigation , conducted at the site of a proposed warehouse for Losli, Inc., in Tigard, II, Oregon. The location of the site with respect to adjacent streets and Il surface features, is shown on the Plot Plan, Plate 1 . c '! The purpose of this investigation was to provide our conclusions ,, regarding g eneral site stability and recommendations for site preparation and d for building and foundation support. To accomplish this purpose, the scope of our investigation included. ° i`' 1 . Review of previous reports by names & Moore in the vicinity i of the site. ,` i 2 Exploration of subsurface conditions by means of seven test i � borings. 3. Evaluation of pertinent physical characteristics O, soils ' 4 ;' encountered by means of limited laboratory testing an. krela-- tion with laboratory data developed by Dames & Mole.'e dur .ng 4 previous investigations at nearby sites. 4 Engineering studies and analyses to serve as a basis for our doncJusions and recommendations. 4 , 5. Preparation of this report summarizing our findings. PROPOSED CONSTRUCTION "• We understand the proposed development will include a duck height 37,500 s . ft warehouse of tilt,-up concrete Construction The proposed q p pro' os i building will be about 370 ft by 100 ft in plan dimension with a finished floor grade of elevation 154.5. Approximately 3 to 4 ft of fill will be fi 4 1' ' 0 �rcu IC. a&ftfibre G. r A 1 a h . r -2- )i 1 I 111 required to obtain final site grades. Maximum floor loading could be on the P kips p s� order of 300 lb/sq ft with individual column loads up to 50 k s and s aced q� � q on 25 ft centers. It is proposed to modify the existing creek channel on the t west side of the site, as well as excavate an area 170 by 140 by 4 ftseep ,' immediately to the north of the site for flood control. In addition, it is a planned to use these excavated materials as fill for the proposed develop- s ment, if feasible. 1 SITE CONDITIONS b , 1; Surface Conditions The surface of the site is generally level and grades gradually • • I" " frofn about elevation 149 1/2 in the southwest corner to about elevation 152 4 in the northeast corner of the property. At the time of this invrtotigation, vegetation at the site consisted of a dense growth of grass and weeds with an '' occasional small tree. The site is located in the flood plain of a tributary , of Fanno Creek located adjacent tO the west property boundary. According to ! M' r- t 1 flood plain inforMation furnished us, at the present time the majority of the ' site Would become inundated during a 100 year flood as illustrated on the Plot Plan. I Subsurface Conditions Subsurf ace conditions were explored by means of seven power auger borings The locations of the borings are Shown on the Plot flan; Plate 1 . 1 , A description of the field explorations, together with detailed logs of the borings, is presented in Appendix At Field txplorations. Within the proposed building g area i the explorations reveal relatively uniform subsurface coed = tionst consisting of clayey silts with variable organic content and sandy namos a Pia+0,ont IL silts. Generally, the naturally occurring soils consist of a 4 to 6 in. mantle of organic top soil (sod layer) underlain by 2 1/2 to 3 1/2 ft of a ! stiff black clayey silt with occasional to frequent or g anic material except q at Boring 6 where this material was not encountered. Below this material, , kw a stiff mottled dark gray to gray to light brown clayey silt occurs in a ` layer ranging 1/2 upper ,. la. er ran in from 4 1 2 tc� 10 1 2 f t. The u Pr 1 to 2 f t of this material ; e ' contains occasional organic material. The color of these clayey silts ?; g o , [ p. °1 generally grades lighter with depth. Below these stiff clayey silts a very 'w stiff to hard gray to yellowish brown fine sandy silt was encountered to the of maximum depth explored (16 1/2 ft below existing grade). '' The groundwater level varied from about 2 1/2 to 3 1/2 ft below r the present site grade at the time of this invest,Lgation. r . CONCLUSIONS AND RECOMMENDATIONS ,a General Pertinent physical properties of the various soils encountered I were evaluated by means of laboratory tests. Descriptions of tests per" . formed, together with the various test results, are presented in Appendix B, , Laboratory Tests. The field and laboratory data generally indicated the r natural soils i tntiediately underlying the sod, topsoil; 6.nd Upper ' to 3 or so • ft Of the in situ soils (black clayey silts designated Ma/OH on the boring logs) possess moderate strength and compressibility oharacteristice. r � • , suitable foundation su pp ort can be provided b y coventx oyal spread read , footings established on properly compacted granular fill and designed in adcordande with the recommendations presented Subsequently in this report. . r a 9 Dams A Moors yy 1 r . il t, i -4- , , 1 Site Preparation k In the proposed building areas and areas to be paved, the surface + should be stripped to remove vegetation, topsoil, and organic material* Y l Based upon the boring data, stripping to a depth of about 4 to 6 in. will be r . G .t required. Additional stripping and local excavations will be required to + i II, remove tree stumps and roots. The stripping should extend a minimum of 5 ft ,, beyond building lines. Stripped material would not be suitable for engi- . neered fill and should be stockpiled for landscaping purposes or removed from r the site. Due to a variable organic content of the upper 2 to 3 ft of in situ soil and settlement considerations, (to be discussed subsequently in I this report) the upper 2 to 3 ft of the in situ soils (black clayey silts, • 0 E° `designated MH/OH on the boring logs) should be excavated and replaced with compacted granular fill within the building areas. These black clayey silts r 'I would not be suitable for engineered fill and should be stockpiled for Ilf landscaping purposes or removed from the site. 4 , During dry weather, if standing water is not encountered on site after excavation of the black clayey silts, the resulting exposed surface { should be proof rolled with a half loaded dump truck. Soft or weavy areas k, ' encountered during this operation should be overexcavated and replaced with compacted granular fill. Since this Cite is in close proximity mity to a drainage channel, the ground may remain wet even during dr summer weather due to a 1 g g y n high groundwater table. Assuch, it will be necessary to install a ranular necessary ! 4 • working blanket to support donstrUdtion traffic in this area as discussed subsequently. • If site grading is conducted during the wet season or if the ground remains wet due to high groundwater, installation of a granular ' ' , i , omos a More r ---------- s v: Q. 1 5 I hworking blanket in building and pavement areas would be required. Instal- I lation of a minimum of 18 in. of compacted granular material in building and i 1 pavement areas would be necessary to provide a suitably firm working base for p 1 subsequent construction. Relatively free-draining pit-run rock up to 6 in. I: maximum size having less than 5 percent of the portion passing the No. 4 sieve passing the No. 200 sieve would be suitable for use as granular fill g greater granular i may s for the working blanket. A rester thickness of ranular fx,ll maR be required for haul roads in order to prevent subgrade damage and rutting of ,.. `9 the working blanket. When wet, the in situ soils at the site are extremely sensitive and are easily softened by conventional stripping and excavation f procedures. To lessen subgrade disturbance, site stripping and rock fill placement should be accomplished with crawler-type equipment, and the amount ? k '', of traffic on the silt subgrade should be minimized. If the use of tracked . 4j excavation equipment results in appreciable softening of the silt subgrade, it will be necessary to excavate utilizing lower impart techniques, such as dragline or backhoe, with teeth removed from bucket, working from an advance ing pad of granular fill. Following placement of the granular working base, li ° . the entire surface of the site should be compacted by at least 4 passes of a f moderately heavy vibratory roller imposing at least 350 lb of impact force a Y 1 r in. of drum width. The surface of the site should then be pet proof rolled t, With a fully loaded dump truckt and any soft or weaving areas should be, ', i overexcava'ted and re -.laced with rock fill. p Our recommendations for engineered fill material to raise grade Within building and parking areas is as follows engineered fill should • consist of granular material that is relatively well-graded, having a nominal 1 � G �+ Datmoo 04 Olooro c 1 's 4• ' il I 1 -6- il 1 V maximum size not exceeding percent -' 4 in. and with not more -than 5 ercen . of the • i. portion passing the No. 4 sieve passing the No. 200 sieve. Fill material 1 'll which ruts, weaves, or pumps beneath construction equipment, or appears muddy R « r i1 will be classified as unsuitable. This fill should be installed in maximum 8 in. thick horizontal lifts and compacted to at least 92 percent of the maximum dry density obtainable by the Modified AASHTO Method of Compaction (Designation T-180). Earthwork operations at the site should be inspected by ` 0 a qualified soils engineer. 4 In addition, we were asked to comment on the feasibility of `^ utilizing the soils to be excavated north of the proposed building for engineered fill. Based upon the available soil information, it is our opinion these excavated soils would be unsuitable for engineered fill due to their variable organic content and unfavorable compressibility character- istics. Foundation and Floor Support .., Foundation support for the ' ppo proposed development can be provided by spread-type foundations established on properly compacted fill installed A } over undisturbed natural soils. • • Interior footings may be established at a depth of 18 in. below " Ifinished floor grade. Exterior column and wall footings should be estab- ° f • lished at least 2 ft below lowest adjacei7t final grade except for the west Wall foundations. The foundation along the west wall should be established a . . m minimum of 1 ft below the bottom of the proposed draa g e channel. a In order to limit foundation settlement:, to a tolerable amount `to be discussed subsequently), it is recommended that spread footings bear , Dames 8&l oG '' .i. n,,,.-.+.e .r,....... ,. ...,.._. . ..,i,.. .r.. ..... ....:.....:i t .r....::-., . u.4 .. .. . .. .•x r.. 1 . ,...... ..... , ' ...1-. . .. ., .J.. +nn . . t .Y.,..1'+.",..Ixr.4 i..11F,. 1 1 -7- 1 p 1 on at least 4 ft of compacted granular fill installed as discussed previously 5 except for the west wall foundation. The west wall foundations should be underlain by a minimum of 2 ft of compacted granular fill. We recommend that ' Y p g Ii ?' overexcavation of in situ soil beneath the west wall foundations be accom- I .Y I;� bpelneshateh d within wa e st footing of s trthese s fzoonte i ngof. 1 Ghraonriuzlaor n tafl i ll to sh1 +a ould tibc al i nstHl 1 l Vd and compacted as discussed previously. R Foundations established as previously discussed and resting on the J, } aforementioned compacted fill may be desigi.led for an allowable bearing A capacity of 1 ,500 lb/sq ft. This applies to 1 ft o in. minimum wide wall 1 ' footings and 2 ft minimum width for square footings. This design bearing 1 ' I: value applies to the total of dead° and normal live loading and may be increased by one-third for the total of all loads, dead, live, and wind or •• ' ' seismic. x , A compacted fill blanket established on the properly prepared t grannular fill will provide adequate floor slab support for the proposed ' ry building. It is recommended that the fill blanket immediately beneath the . M floor slab consist i �:st of at least 4 in. of well graded sand and gravel, or , crushed rock, 3/4 in. maximum size with not more than 5 percent of that which passes the. No. 4 sieve passing the No. 200 sieve. This material should be r installed in a single lift and compacted with at least 4 passes of a moder- ately heavy vibratory-type compactor. o , Foundation Settlements Laboratory consolidation test data, titilized in our settlement . analyses} provides a basis for es tima'ting sett,l.ement of typical foundations a Dartoe*J.8,t Moore 1 } . ,..,, ., . W.L. ,:. .•.,,:. ..,.. x il l S II designed in accordance with the recommended bearing value to support the i 4} anticipated building loads. A comparison of anticipated settlements for .oF� I spread .;gs installed in accordance with the aformentioned site pre- . F , , �� paration recommendations removal and replacement of black. clayey silts. designated MH/OH on the boring logs) and if the black clayey silts were not removed for typical spread foundations and floor slab are shown in the following tabulation. ESTIMATED TOTAL SETTLEMENTS c Black Clayey Silts Foundation Type Removed - Replaced Black Clayey Silts Load Size With Compacted Fill* Not Removed q Footing 50 kips Square atin xF6 ft 3/4 to 1 in. 1 1/2 to 1 3/4 in. } Wall Footing kip s/ft 18 in. wide 5/8 to 7/8 in. 1 to 1 1/4 in. Center of 300 lb/sq lb/s Floor Slab 5/8 to 7/8 ..n. 1 to 1 1/4 in. ft * . Minimum of 4 ft compacted granular fill beneath bottom of t� ns where foundations and 6 ft beneat h floor slab except for west founda- ere a minimum of 2 ft of compacted fill is required. I The settlements at the edge of the loaded area are estimated to r be about two thirds of the indicated values. For these StUdieS, it tPxs assumed that real loads were equal to approx- . imately 80 percent o total design loads. We estimate that about two-thirds -thid of the indicated settlements will occur within a period df 1 1/2 months after loads have been applied. The remaining settlement will occur more slowly ', over a period of 3 m oaths or so . i Dames a mooro o N 1 9- n, i 1 Site filling will result in additional consolidation of the 3' P underlying natural soils in addition to the settlements from building loads. 1 We estimate this settlement to be about 3/8 in. per ft of fill placed above r' l present grades. In order for the settlements caused by the fill placement to , ,3 i not adversely effect the building, site filling should be completed at least 1 • 2 months prior to building construction. I9 Cut and Fill SloPes '. Permanent cut and fill slopes should be limited to a maximum 0 steepness of 2H: 1V and should be protected from erosion. The erosion t �i protection blanket should protect the entire west and north slopes of the r T/ site along the proposed building and be a minimum of 12 in. in thickness II! underlain by 6 in. of bedding material or a technical filter fabric. by g geotechnical x t Imported riprap should conform to Class I, Corps of Engineers Specification. Y; ; 1 Class I riprap gradation requirements are as follows: R, At least 90 percent of the stone p pieces by weight should range in size 25 to 150 lb with at least 75 percent of the stones heavier than 50 lb be in sizes of 50 to 150 lb, and at least 30 percent of the stones should be n �' sizes larger than 75 lb. The riprap stone should be reasonably well-graded from the smaller to the maximum 1, Size specified. Stones less than 25 lb in weight should . exceed not 1 0 percent p . by weight. ► ,, Bedding material should conform to Corps of Engineers Specifica- 1 tions. Gradation requirments for bedding material are aS follows. fi ► R Sieve Percent By f �Des�gnation Weight Passing 4 in. `100 1 ,f 60 100 t 2 �n 3/4 in 45 75 7 P No. 4 25 - 50 No. 10 15 - 35 No. 40 0 -- 20 o X10, 100 0 • 10 t , f 4 am s at.mootro ij - a ., _ ,: ,. ...,;.,. ..•,. ,.•._,�.�...,w. A.,.■■■■■■■A •• OP • i 4 , •/ 'I i" 4. 4'\e.'/' \. , . 1 -10- ' ! I In lieu of a granular bedding blanket, a geotechnical filter fabric such as lo 1 q ■ MIRAFI 140 or equivalent can be utilized. A toe key should be provided at .'1 th e base of the riprap blanket at the point where the 2H:1V slope intersects , i the channel bottom. This toe key should have a minimum width of 2 ft at the i 1 base and should extend for a minimum of 2 ft below lowest adjacent final grade. , Pavement Support . , , • , On the basis of our review, a saturated CBR value of 3 has been . , assigned the near surface soils at the site. This value is based on a • , . • • ',I correlation with soil type and experience at sites with similar soil condi- tions, Based on (a) a site drainage system which will prevent accumulation , of water on the subgrade, and (b) the previously discussed site preparation . 1 of the subgrade material including replacement of soft near surface soils, 1 recommended minimum pavement design sections are summarised below. , Subbase Base Course Asphalt . g i Thickness Thickness Thickness f. Pavement Use -In.- -In.- -In.- Roads and Parking 10 7 _....... 3 L. Areas - Trucks Roads and Parking 4 7 2 1/2 H Areas - Light Vehicles . Notes: 1 . Single-axle loads of 6,000 lb for automotive vehciles and 18,000 lb for trucks were assumed. 2, base coarse Material should consist of 1 1/2 in. minus ' I crushed rock meeting the base aggregate requirements as set forth in the Standard Spedifications for aighway Constructioni Oregon State Highway Commission. •' 1 I , , 1 Dames 8t Moore , , 4 • . . C' ' 1 i e t ' 6 1 i , 1 ! —11- 3. Subbase materials should consist of locally available ' ii relatively well-graded fragmental rock or sand and gravel, 3 0 1 in. maximum size, with less than 5 percent fines passing the 1 No. 200 sieve. 1 4, 1 d 4. Subbase and base course materials should be compacted with 0. a minimum of 5 passes of a vibratory roller imposing a force of ! at least 400 lb/in. of drum width. A .? If the upper 18 in. of the black clayey silts are excavated and ! i 1 t • 1 ' replaced with compacated rock fill for use as a working blanket, then the 1 1, subbase can be eliminated from the aforementioned pavement section. '.. .., . Prevention of road base saturation is essential for pavement durability and efforts should be made to limit the amount of water entering ' r ! tie base course. This can he accomplished by: :. . 1 , 1 . Placement of curbing around all planters to divert pavement surface water runoff in the catch basins. • ' i 2. Not allowing pavement base course to extend beneath planter or lawn areas. 7 , Providing 4 1 I 3. weep holes through the sides of catch basins, m immediately below the pavement, to allow drainage of any water trapped in the crushed rock base course. 4 6 To prevent damage to automobile parking areas during constrUdtion, , 1 It' oi • wc suggest that these areas not be used by heavy equipment, dump trucks or . . concrete trucks. ' s .s. Lateral Earth Pressures - Below Ground Walls The lateral earth presSure exerted on below ground walls i8 function of the type of wall to be donstrudted as well as subsurface Soil ant water conditions. all designed as non-yielding eleMehts, such aS the below , 1 Slab portion of the building walls/ should be de:tigned for a tinimdm uniform lateral earth pressure equivalent tc 251 lb/sq ft wherein H equals the height , . .• • : 1 ..tri. Donlon a tuatee . 1 ...... ., 1 I S. il • 1 o -12- f of wall in feet below the floor slab and above the lowest adjacent outside `` t 9 grade. hydrostatic , . ?'' These values do not include pressures and assumes a � . k^ nominal, but not excessive, compaction of backfill behind the walls. In this q regard, we recommend that backfill adjacent to (behind) below ground walls " l. g granular sand conazst of free�dranl.n ranular material, such as Jand or sand and. fine � i gravel with less than 5 percent of that portion passing the No. 4 sieve , . . i • passing the No. 200 sieve, compacted to a dry density on the order of 88 to 90 percent of the maximum dry density obtained by the Modified AASHTO Method p • of Compaction. +r 6' • • i Limitations and Concluding Remarks ' Thy' recommendations made in this report are based on the assumption ti I, that the .3011 conditions do not vary appreciably ably between the borings. The r Y subsurface information presented in this report does not constitute a direct or implied warranty that the soil conditions between the boring locations can t • .,.: is be directly interpolated or extrapolated or that soil conditio,ls and/or variations different from those disclosed by the borings will not be rev- t 1 ealed. ;;ttrApolation of this information to the entire site is not possible; therefore, uneXpected conditions could occur and suitable contingency funds should be appropriated to allow for such correction work as may be required by conditions disclosed during construction. n, .. -. to disturbance durin �' Due to she susceptibility of the soils g � '. construction and/or wet leather, inspection services during the construction 0 . phase of the project are necessary to verify soil conditions. } . , Dome9 a Malmo , .•Y IF-r. H ' t rY 1 I 1 -13- i In order to comply with the intent of this report, we recommend that the soil engineer be retaincA for review and inspection services relating 1' to: ti 1 . Site stripping and subgrade preparation. a 2. Proposed structural fill material for the building area and •'` �� inspection of the fill installation. 1, f 3. Footing excavations. t t -000- '^ uu. r A 1. P, , D o `I t l I. X Y a r k f ? 1 „ i Y i t xi . r 1 / r ty Dos Hogue PPP r ,rr 'y 1 7 • f'. 1 r y' - j h I • .• p II` APPENDIX A i FIELD EXPLORATIONS d� b1 Subsurface soil conditions at the site were explored by means 1 '. . [ II of seven borings drilled at the locations shown on the Plot Plan. The • borings were drilled with trailer-mounted, continuous flight auger drilling i�' equipment. The borings were about 6 in. in diameter and extended to depths !,} ii,,, of 13 to 1 6 1/2 ft below present grade. The field explora'iions were coordinated by a field technician log ' �pf(5 from our office who maintained a continuous detailed to of materials and Fi relatively undisturbed ' ;• �' conditions encountered in each boring, obtained ,- y � - , I depth, p ' . ' samples at frequent intervals o� and recorded other pertinent data. at 6 the site. Soil samples were extracted with a Dames & Moore sampler of the t yp e shown or page A-2. Graphical representations of the boring log s are , , 1 % presented on Plates A-1 and A-2. The nomenclature used in classifying the ,,1 soils is shown on Plate A-3. it i , 1 j i t 4 \ . ' e 4 :awe$et O4i 'DO ' /Ott i' 41 1 �. + •.,...,. ......a., .......... ........... ........... .. .... ......,. ..,.,.., , v. „ _, r..0.1�'r•tk .. .. »I 1v,Y w, .«.1.i.II • ■ •' • . ... ...'' ""..1 .• ."4".liker. --"•"■- - •••••■•... ................7..............• '-'-----. ....,. .. . . , . , . . , , . ' ■ , . , . . •, . , • • . , , , 1 ', it : II A-2 . t (://_. ._ ,,.. 11 „ 14,,,,___ • . , . . . . . . 11 ;;; . 1 /;- / . . . . ,....-" i, , • t SOIL SAMPLER TYPE U . 1 1, N%,'), FOR SOILS DIFFICULT TO RETAIN IN SAMPLER _., ..' ,• DRIVING OR PUSHING MECHANISM ! , ; .. - I ".• . I . . .. ' I, .'N',,,----- , 11 ht,,k,'*', COUPLING`------ \I:, ••,• '1 a • '\4 ,*. N. t . WATER OUTLETS •••-.. „,,,,v.• ,,:•01,, . II 4 ' ' , ----...„,..4•,4■„,,,... .—_.... ,/iiia, , A 1, im 1114 , 9 t;N: t'. ' , ..e., *, •,.( i...,;\ . , . if , . • ‘ . I V. or.' '' go- /,, , . .4 , a . /4,,. • •• •.. ,i NOTCHES FOR 0 i ' 1::', •''.',.....N ,. ,; ENGAGING • • . . „ FISHING TOOL k —'• CHECK VALVES I i. . • al I, 014 1 7, k . . ,.. 1: NEOPRENE GASKET . ;I 04'; k.j.. •■,,, :7 ,,le, , „ FIEAD.—........................ A.. Iti„,,,, ,..,10,,, , 1 . . . VALVE CAGE a I „ . •id, 1:, i*.. ..i9 ■ • • c; '41 / , ... •,''• NOTEI .If', • "HEAD EXTENSION”CAN ._ ;,, 1 . . J1' GE INTRODUCED BETWEEN I "HEAD"AND"SPLIT BARREL" c c '''it•i ALTERNATE ATTACHMENTS • ,i 1; 1 , . • • , t .....____... , It, ; ,, SPLIT BARREL 4 a 'IrI,1 11 , , 1 ,-• •,, (TO FACILITATE REMOVAL I',.,,,__ _ ' ;I c, , i OF corm sAMpLE) r, I •44,,I . •; I '11[,,..,44, ,, ,. , •fi 1 AINFR 1 11 C°R F.1.11NEGTS ., . ' , 14' , I -1" 2•/2 G.D.BY 1"ONO) ci I . I i 1 SPLIT BARREL , 1. ill . 1 1' ti.: il 11.; ,..; ; 0 • 120 ; ; . . ; 1 1 II ,); ',,11,j; r. LOCIto,. 1'1:2 :',11.,Coil F.11E7 XINING .. , ■ ; ', 1,4 niNG i nil lc. V: 1 , ,.. $ I ., , '''' .11 „spLIT . , , . ,,. ,,, Bit--........, . )1 , ,s,of ..._.,..,,_ „,,,,„„ FERRuLE Of I c ly CORE,RETAIMINO ,. • te; ,...1' ,, ilE4ilvcERIko FA( ' 4 0' F:•0 ' RETAINER PLATES •.14 '..••• , , • ir • .'kr' (INTENcHANGEAGLE WITH .a I 4 r0",,ani ' " C/THER TYPES) 01' ,gtN4ALLEb,, 5 PIANO TUBE , . . 4•,,, il'0" ■ lope IINTEIICHANGEAELE LENGTHS) . 1 ,'', b•••,.. „ i'')'414 n'[.. . 4 , / [a • 1 0 "4 4 , * , •:•• ; ,o',, .4:41 a ,• .. , e•--___ • • 1 ;,•a., 4•I . • ' '' . ., , .' • ,I, . J ..' •'1, , , g , •) • ' s,....0 - OS 0 Y , t)ortles 8i Moote6 1. i t ' , . I o 0 • 1 ' . f I ! . APPENDIX B 11. Y LABORATORY TESTING A program of laboratory tests were performed to evaluate the pertinent physical properties of the materials encountered in the borings and for classification purposes. The t ests p erformed included consolidation, R moisture-density determinations, Atterberg Limits determinations and ex an- i sion, tests. { Consolidation '. Consolidation tests were performed on representative samples . i : it extracted from the test borings to provide information to be utilized in '" settlement analyses. The test was performed in the manner described on page d 6 ` B-3. The results of the tests are presented on Plate B-1 . r . Moisture and Density ? it ' . 1 Moisture and density tests were performed on all of the undis turbed soil samples for classification and correlation purposes and to � P P p a ` +y evaluate the unit weight of the in situ soils. The test results are tab- ulated to the left of the Log of Borings r Plates A-1 and A-2. The tests were performed Y erformed in accordance with ASTM D2216 63T. At g .L, • Atterberg �.mt5 Atterberg Limit determinations Were perforMed on selected soil , samples, primarily for classification and correlation purposes. Liquid Limit ,, ,,,\'' I I and plastic index test results are tabulated to the left of the Log of Borings; Plates A-1 and A-2. a I The tests Were performed in accordance with ASTM Test Designation `t n423-61T and D424 59. 5 a , 00° , ii r II • t ' ‘ it • B-2 I a 1 ■u. %. : ! 1 Exparisicn crest g 1 I. .m •+ i This test is another form of consolidation test in that any + i,•, At I ), specified one--dimensional vertical load may be applied to the sample in the "ill consolidometer. The sample is saturated and during the saturation period the 1 pressure required to maintain zero vertical movement is measured. The 1 l .., . i 11 results of this test on representative samples indicate the natural soils to 1 i a be non-expansive. ' ! i I ■ is , A t. 1 I r ■1 '` F. .. . I� { B 1 , , r f Y' • : : Il 5 O ,• f K i t t• • r, k r , , a * .1.. i ef* ( •'1 METHOD OF PERFORMING CONSOLIDATION TESTS 4 , CONSOLIDATION TESTS ARE PERFORMED TO EVALUATE THE VOLUME CHANGES OF SOILS SUBJECTED TO INCREASED LOADS, TIME-CONSCLIDATION AND PRESSURE-CONSOLIDATION CURVES MAY BE PLOT- • TED FROM THE DATA OBTAINED IN THE TESTS. ENGINEERING ANALYSES BASED ON THESE CURVES 'D ".; PERMIT ESTIMATES TO BE MADE OF THE PROBABLE MAGNITUDE AND RATE OF SETTLEMENT OF THE .,,-; i TESTED SOILS UNDER APPLIED LOADS, • a EACH SAMPLE IS TESTED WITHIN BRASS RINGS TWO AND ONE i HALF INCHES IN DIAMETER AND ONE INCH IN LENGTH. UNDIS- j ir TURBED SAMPLES OF IN-PLACE SOILS ARE TESTED IN RINGS '" ',,, TTAKEN FROM THE SAMPLING DEVICE IN WHICH THE SAMPLES ;" r?;ii �; � � �.�a WI�R OBTAIN.CD. LOOSE SAMPLES OF SOILS TO BE USED IN # .F CONSTRUCTING EARTH FILLS ARF. COMPACTED IN RINGS TO .',: . " x'13`�k' '''' `�'_},i �, « 1 «F r e "r n�� 1%,,* �A f $ PREDETERMINE!) CONDITIONS AND TESTED,TESTED, + ' *1 '' lfR ,t" . i K °r ; ,-7,..,,,,L4.,,,, 1 3 •e *ail∎' d IN TESTING, THE SAMPLE IS RIGIDLY CONFINED LATERALLY a ;,' BY THE BRASS RING, AXIAL LOADS ARE TRANSMITTED TO THE DEAD LOAD-PNEUMATIC i CONSOLIDOMETER ENDS OF THE SAMPLE BY POROUS DISKS, THE DIskS ALLOW DRAINAGE OF THE LOADED SAMPLE, THE AXIAL COMPRESSION OR EXPANSION OF THE SAMPLE Is d MEASURED BY A MICROMETER DIAL INDICATOR AT APPROPRIATE TIME INTERVALS AFTER EACH LOAD INCREMENT IS APPLIED, EACH LOAD IS ORDINARILY TWICE THE PRECEDING LOAD, THE IN h• CREMENTS ARE SELECTED TO OBTAIN` CONSOLIDATION DATA REPRESENTING THE FIELD LOADING I CONDITIONS FOR WHICH THE TEST IS BEING PERFORMED, EACH LOAD INCREMENT IS ALLOWED TO ACT OVER AN INTERVAL OF TIME DEPENDENT ON THE TYPE AND EXTENT OF THE SOIL IN THE ,. rn 4 a ilIELD, F i k r f Q .. . , ., .. . , .. . .. -1. J., . . . . . .. . , .. • , . ., .. ....... . ..,.... . . . - . ... . .. , .. ... ..... ..- • . . - . .. . , . . .'. ' . \' , V. 1 t *",4.• , (. . . , . • • PRESSURE IN Las./SO. FT. 0 . , • 0 00 § 80 i, 0 8 . . • 8 . g.), . .,:r ir, .00 • ,. .. . . . •• , . . g . _..... .01 Ill11111111 . . . , . , . ■ 4 02 16611111,11.111111116111 6. . ,v IIIIIIIIIIk .. . ._.. ' s , - . .. ' .03 Iii 1 , - -.,___ _____I i :. . . . . , . 1 . . . . . ,. . .04 . o . ..4 . \ n .................1 .1 .; I II 0 466 , t, Ft 1 . . 0 .. 1 .. ^ i . z u I ,". 141 1 4,4 • ' I 11 . ill .09 . 11..._ Rebblivb t80,0 . III": ,,,,,,_, . ...,. • ■ 1‘ .• 2 I .10 it 40 II - lishel, . 1. I . . ' t N .... , ,1 i .....1....... " . a ■ 11 g 4 il x1111 ' ......... ■•■■■■•••■•••••■■•■■■••*111■0 . MOISTURE CONTENT .% DRY DENSITY -MR- SAMPLE ,, Ott.. OLIIRVEs BoIRINO OEPTH SEFoIRE AFTER EFORE AFTER -FT- sYM80L. TEs-r.. TEST . TEST TEST . . 1 1 2I MI1/011 .94 91 66 /1 • • ■•',, 1 2 5 HP 32 29 84 99 6 24 1i HI. 21 21 91 -. 101 , , 1 . • ,. '... 1 CONSOLit)Al'ION li'58"r DATA . . moeiptik '04 PLATE itt-,11 do , 7 n I , ,... ',. 1 - ., - .... w„ , • 1 A filtor layer under all riprap is essential (2) unless the banks . material meets the filter requirements. (See section 2.7.) V, , (1) Tramped riprap is graded stone dumped on a prepared `slope in i . such a Winer that segregation Will not take place. d stone v. ` riprap is the most flexible of the types considered here and viii. a: p � p 3'`Pe ;. adjust itself to uneven bank settlement. In most areas th roped stone is the least costly `type. t (2) Rand-placed riprap is stone laid carefully by hand or by derv- ' „` .. rick following a more or less definite pattern with the voids ., . with smaller stone and the surface : between the larger stone filled W�i , t., . . kept relatively even. The resulting protection approaches good dry i rubble in quality and appearance, but this type of riprap is rigid 'i. ‘ and lacks the strength necessary to bridge even minor movenent of ,.. rt. the surface which it protects. , .., : r,,.,,, (3) .Wire-enclosed riprap is stone placed in vire baskets or in,' ' p wire covered-mats.. Wire-enclosed riprap is generally used because , ,"-rock of .suitable size..is not available. This riprap is effective . . ; , r. s until the wire enclosure fails. ''» (4 Grouted riprap is riprap With the interstices filled with port- ''. . land cement mortar. The use of grouted riprap Is seldom justifiable I . . rl , when stogie of suitable size is available. . 15) Concrete riprap in bags is concrete in cement sacks or suitable ' t burlap.,bags that are hand placed in contact with adjacent sags. ,. ' ?:;i:. . l• ." (6) Concrete'slab riprap i ,concrete slabs . • '� is plain or �reinf , „t,; .., - p ctes p4 The slabs poured ' » ' ” � -poured or placed on the surface to be profs " » not con- �k. d e the surface to be protected. The slabs are „ ' nected to on ach other. x ' II • 'D1$IGX at ' ', «m2.1 IJesi 9l1 i ' �„ °a rruprylwPYrlr.MYY w.Ma..e�Mi��e r n ,: The resistanee of dumped stone to displacement by moving water „ .„• ' . ''` 7/•.••,. ' .. -depends upon: ,• r • • r (i) ° eight1ti roue,'ra pes and compoiitI4ti Of the in di'vidua]. stones The r at .on of the stone ' .. v :; .,rr. r. Y r" "YMft,.y r 3) •The depth of ;water over the stone blanket . i ., (4) The steepnesh and Stability of the protected ói ' • (5) The stability aria effectiveness of the filter bi Watt et on which the stone is placed: ii • `Vr Y is i e, A , . ".. ,. --...,77----........... , . • . ., .., . . ., . .. (6) The Velocity Of the flowing water against the stone . (7) The protection or tog and terMihala of the stone blanket . The design of a dumped-stone blanket for bank protection is similar e to that for a stone-lined channel discussed in section 4.12 of reference 8. . The principal difference betwelln stone linings and stone bank protection is that in linings the channel bed is also lined, and the lining is generally continuous throughout the length of channel wherein erosion is imminent. . e . Bank protection is generally limited to problem areas. The toe and termd- nalg of the bank protection are particularly vulnerable to attack by the , i current. At some locations, wave action may present a more severe form of ,,, attack than water flowing parallel to the embankment; such cases may I e:: require heavier protection. Protection from wave action is discussed in references 1, 4.1. 6, and 7. ., .'.:- . . .1i, .4 2.1.1 - Size of Stone . , . . .. . . -e . The size of stone needed to protect a titre or highway embank- . .. e', ,. ment frcd erosion by a current moving parallel to the etbankment is ''' .,,, .- determined bs4:1c:lestn:illluurvetswtundh:v.e Stlilesa(111)em ::ilig :isam4,:er5t per- cent size of stone. The size of stone is found by a trial-and-error procedure which consists of first estimating a stone size. The mean velocity (Vm) of the stream during the design flood must - ,• • :: then bekdonverted to velocity against the stone by use of figure 1. The ratio (a) of the equivalent spherical diameter of the 50 percent atone size to the depth of flow during the design flood is competed by using ,• •= ,, 0.4 of the total depth when the depth of flow exceeds about 10 feet. The reason for this is that use of the tOtal depth would result in a stone size which would be adequatz, at the total depth but which might be too ; f light to provide protection near the water surface. With the velocity against the stone (Vs) enter figure 2 and read the stone size or the embankment slope. The stone size from figure 2 is the 50 percent (median) size, by weight, of a well-graded mass of stone with a unit Weight of 165 pounds per cubic foot. If the stone size from figure 2 agrees With the assumed stone size, this is the correct size. If not, the •. t. procedure is repeated until the assumed size is in reasonable agreement eith the size from figure 2. ., • • • ,. When the unit Weight of the stone is other than 165 pounds per cubic •. ' e foOti the site from figure 2 should be corrected by CreageVIS eeUation • ' e (discussion of in reference 4): v . , • 1.24:1L. • . . where k = stone size from figUre 2 , . . • kw s. stone olio fOr stone of irt pounds per cubic ,feet 11.4 , . , ..., , O a • 6d w ADAPTED FROM HYDRAULIC CHART 712-14, WA, . HYDRAULIC .DESIGN ORITERIrA,CG RPS OF ' jjEERS , k i= 50 , stone size . , . : r ,,, I . % 0.s• �, j . . u_ . , ) . w ,,,,. 1 , .... 0 • . W' . t . , . . . , . 0 • ',-, 0 ...I ill . 07 o mill 0.2 1 • 1 • .kf t 0 0.2 0.4 0.6 0.6 10 ., Ve1oc t Against Stone - F.P.S. m 7 Average Velocity in Chanel F.P*S. V . FIG. 1 - VELOCITY AGAINST STOVE On CHANNEL BOTTOM ti ;. f' • . ',4 , The size of stone required to resist displacement from direct impinge- tr vent of the current as might occur with a sharp change in stream alinement H. t is greater than the value obtained from figure 2, although research data is ', st how mach larger the stone should be. California Divi ., lacking on u 4:a1 d lion of Highways (6) recc'nrn nds doubling the velocity The the atone as n8 � determined for straight alinement before entering figure 2 for stone size. tt: S Lane (2) recommends reducing the allowable velocity by 22 percent for verb' sinuous channels; by ` ,� , ell; for determining atone size by figure. 2, the velocity (i'e , ;x would be increased by 22 percent. Until data are available for determi ait ' . . � 1ht©s2Qde eiad�: upon the severity of the attack by the would vary from �• , size at the point of t ingement a factors depending P y y e current, should be .. • applied to the velocity vs before enteritg figure 2, i i 11-5 • — _____ — _ .:',.. ,? a I , +. '1 STONE WEIGHT, IN POUNDS (` 20 60 600 1000 1500 3000 5000 1 510 I 401 100 200 400 1 6001 . . .. 26 _ 1 2000 I 4000 I ' ;. 12.1 or bottom I ,; . 24 .-r- or ,. 4:1 . aiii,111‘03:1 ' — I .: 22 ""' , , ' t opr., opp. 2:1 . .. , ,.' • t AA , . _ . ,,.,.:., .;. .. , 20 , .'' .411„.' ......' . . ..4 II/2.1 . . . . � iS - P )40! , ICI Pilicr:',.. .. ,,,-,: .t,„ �n 16 ,. s ,.''. tAii'r- LIJ : ' . 1 . .. i,,,. i: A. ..'' Ag ...,A .:-- /:.'' v t7:- / 4.0 10 . . ' ' i'''' ....i 65 L�S�STONE QI� iNG t FT . ,,, r •r id i„. A I r i• , k ' �`. . ADAPTED FROM REPORT OF j P SUSCOMMITTE ON SLOPE ,, f ERG NECT$ON, AM, SOC. CIVIL . r f. ENGINEERS PROC. JUNE $9441 .41 if.i.:;,,-, oiti,„ yFI,., ,,,,,„,......2_, ,,,.,‘ , . , , " . • A C k` r 0 I 2 y._ 3. 4 • 4. EAU$VALENT SPHERICAL DIAMETER OF STONE, IN FEET Mk • Fitt, 2..,,. STONE THAT WILL RESIST DISPLACEMENT 1 FOR VARIOUS VELOCITIES A 4SIDE SLOPES I f, a, J ., p', P. ■ ,,,, i'.,' ', 1, rl n.. • .b.. it a ... The three classes of riprap described in appendix "B, .section 10-2.1:, • . ., A ° are intended to provide a light, medium and hea class of riprap of sat° 3, p , r p p ` J- •n, isfactory gradation. The three classes shown in the sample specifications 1 r .might not provide a suitable range of riprap size for 'conditions in some �f �,d States Individual specfirlations might have heavier or lighter classes ,, or they might provide the following i 131.ngle gradation referenced to t ' 50 percent size (k). , Y , Y n• ' 4. r it- Size of Percent of total weight i " stone than the ;ivt:n size ~. •� ,Y i1 ,,, :41h:, ,e p1YY 1 �A „ �� :1 N...p �W 11 r..r+.: -•^,,x •. ..+M°rp.i.-<l#lvsF-E-wr.... a ,16.k 61.r • ...- •: suer:.,n ..w'�... ,.... ° � - ■80 , 6%u .a.-p. •r os Y r .' „• M* not to exceed . • r.r a . w -M • ue`�x yya . . . .• ,,,, .,, . . . . t�''F�.ch•�:caed...of�:ar�.prelpM�shou].d-be�, ac�z�abl•���e �r �.e�� ..�. -��r*�1 . � 11 ceded:flro� the .nom w ;° .r ,. .. . r: "',"to the maxiium size .specified. Stones s�.ler than the specified 10 Per- • -, ..:cent size _and spalls should ,not b e permitte d..i n an amount exceeding " -:• .s a, a • rr u . a iikk wy" 4,..e.''r•i L a �,, t. lo Ype1 cent by.wweight of each load. .r P - a,t m 4 R -; G4 a . ;x ��r . ' ,Y, - Gradation of the riprap .being placed As -controlled by 'usual inspec-':i ,, a„rY ,Ai w, ` .ion. .' o..aid•the .inspector s',;judgment, tiro Vor'xmore-samples of rip of ,• 't., ''..,-,° N�!, he';specified gradation 4.should.'.be dbby:Sorting, tghin,g A' '4 , ;•f • . prepare 'die 14i�C1(�. _ � •, kix 3 r-s- r - `•ji'ra- .a+AU a a.tr a.�” t4i ' ` `,: ""fremix�.ng-in proper Iproportious.'w Each -sample should meig about ,5 tons, �,* .,...--.`,--., •-•.,-.)..., 4r +,� x �1W � �# a�� ��4:� a nsample•Should,>be placed at'the ,�affiple �t -the rnon,atsc���� ;. ';A a,f� � 1*-4 , one v ...., P ,, t'; :Mon JAtte.w,','.The bample .at-the uonstructrion'site .could be :.a part 4�, ahe „ „,,::,*„.,.;:::;:.:4,4:,*-, ,*,:,.4i ,.s. o a ,�1-TM1?_•� -.:4.......4:;...,'...,,t. , , :A.Y,, a - s .�.4. t,. `t r aW •, ,,:tinteheci prap blanket 'These samples :should be iXse Pre e • `Y la, r• --- ..°': . -'.t, referencee'''f`or u :the -reuiation -of'the,Tip rep supplied.,°: i#} : } 9.0 nt° r• -' .. . 'g P p ,l�A •P ra• t` K' t'x4,1 s;•-„ t s.•,.. .,••. ,'' '` %,,-,, b .A+. *` - i • u • , i P F; r it • 1 r r, r• r , .1 • : ( ,' t, ') •,• �, ,..r.•...§y r�,•r.,n,Ys • • • BORING 1 BORING 2 0 ELEVATION 15O • • • ELEVATION 150i 4 SOD LAYER O ` 4'" SOU LAYER '" • : r>�� BLACK CLAYEY SILT WITH OCCASIONAL TO FREQUENT ORGANIC MATERIAL $LACK CLAYEY SILIT WITH OCCASIONAL TO FREQUENT ORGANIC MATERIAL • y ' OH (STIFF) % � � (STIFF) • l t: • a Z 3 `. 2 // ! .: r 54 66 r • LL 92% W • ATER LEVEL (5-25-83) 12„ _ 8g WATER LEVEL (5-25-a ) PI - 50 4 LL = 87x 12 � MOTTLED DARK GRAY AND GRAY TO DARK GRAY CLAYEY SILT WITH OCCA-PI MOTTLED DARK GRAY AND GRAY TO DARK GRAY CLAYEY SILT WITH OCCA- PI = 33 SIONAL ORGANIC MATERIAL (STIFF) t 4 l. �� SIONAL ORGANIC MATERIAL (STIFF) 4• • • ! • 8 72 54 1 ,� w } fi MOTTLED GRAY AND BROWN CLAYEY SILT (STIFF) u. 6 ;. .......- �. u_ [AL LIGHT BROWN CLAYEY SILT, TRACE FINE SAND (STIFF)• u z • • g � s--- 39% - 86 ' O • •• lx • `- • LIGHT BROWN CLAYEY SILT WITH REDDISH BROWN STREAKS (STIFF) YELLOWISH BROWN FINE SANDY SILT TRACE CLAY (HARD) • • I• 0 10 37 10 • - • • • " 24% - 108 • ML LIGHT BROWN FINE SANDY SILT, TRACE CLAY WITH REDDISH BROWN / STREAKS (VERY STIFF) • 12 1?. 50 � ' ..30% 92• • • .... • • i s 14 COLOR TO MOTTLED LIGHT BROWN AND BROWN 14• GORING TERMLNATED AT SCHEDULED DEPTH (5-25-83) r, BECOMES HARD • • 68 • • 24% - 102 16 BORING BORING TERMINATED AT SCHEDULED DEPTH (5-25-83) 18 ELEVATION 1501.,±' ti r 4" SOD LAYER • a DARK BROWN TO BLACK CLAYEY SILT WITH OCCASIONAL TO FREQUENT ORGANIC • 0;; •• MATERIAL (STIFF) ,,/. OH• i li • • I� g 2 • `� B ) � 1 11 WATER LEVEL (5-25-83) • •t. q "' 11% - 87 r MH MOTTLED DARK GRAY AND GRAY TO DARK GRAY CLAYEY SILT WITH OCCA- SIONAL ORGANIC MATERIAL (STIFF) _- I 4 W ELEVATION 150', ,,........•.a r_— . , , , 4" SOD LAYER • • o 0 4 , BLACK CLAYEY SILT WITH OCCASIONAL TO FREQUENT ORGANIC MATERIAL ,,4 : I, (STIFF) r.. / � GRAY CLAYEY SILT, TRACE FINE SAND (MEDIUM STIFF TO STIFF) • 2 ' 6 D • Q /,,. Q (5-25-83) BECOMES STIFF • Y . `, WATER LEVEL (5 25-83) ■ • L.1 W 8 mil MOTTLED DARK GRAY AND GRAY TO DARK GRAY CLAYEY SILT WITH OCCA- u 61% - 60 ® SIONAL ORGANIC MATERIAL (STIFF) • • 8 r 11GRAY FINE SANDY CLAYEY SILT (HARD) 2 • 6 . i KEY: uj 10 • r u_ a 20 , •• z 49% - 73 I • DAMES & MOORS TYPE-U SAMPLER NUMBER OF BLOWS REQUIRED TO DRIVE SAMPLER •25 GRADES WITH OCCASIONAL ORGANIC MATERIAL BROWN FINE SANDY SILT, TRACE CLAY (HARD) �- 13 1 FT WITH 140 POUND WEIGHT FALLING 30 IN ' a 50% - 70 •• • • • Lb 8 i;,. < 12 ® UNDISTURBED SAMPLE „ I , GRAY SILTY FINE SAND TO FINE SANDY SILT (DENSE) D SAMPLE ATTEMPT WITH NO RECOVERY • I LABORATORY TEST DATA . t. : • FIELD MOISTURE CONTENT, x DRY SOIL WEIGHT .., _ IN SITU DRY DENSITY C LB U FT • 10 1 54 - 60 14 GRADES WITH OCCASIONAL ORGANIC MATERIAL LL = 92% LIQUID LIMIT • PI = 50 PLASTICITY INDEX • • • ,• 53 57% - 68 12 104 16 �,, • , 43% - 80 MINIM YELLOWISH BROWN FINE SANDY SILT, TRACE CLAY (HARD) '°°'° • e NOTE : BORING TERMINATED AT SCHEDULED DEPTH (5-25-83) • BORING TERMINATED AT SCHEDULED DEPTH (5-25-83) • DISCUSSION IN THE TEXT OF THIS REPORT IS NECESSARY 14 FOR A PROPER UNDERSTANDING 01 SUBSURFACE CONDITIONS 18 ensa.**,"0"......aezinal - • REVEALED BY THE BORINGS. 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Tom, NM�51M.,..+NMt., ,r..,. • •,r ,-:x., .,?'' .+1 /a . ..n.:•^„"Yr,JkJt'rf.•,..'.,'_ '.aMrfTMNK7�;'H�py�.,'", _ .y.r<n:.+•f+«r•«+_+.es:,-vr,-,dw......,,K n.tlbs. ,._ k „ , -,,. 1."`• # yr•xa: �•����y y• dMw wpu'44R, 4 • aF.)ti • m • I a, is n • •, 1,1• -4141 11111111111 • r • • , • I V I 1 , • • I ire, • f 4 • ■ � I c \� 3 O R I N ç1i t , • ELEVATION 1511/21 ELEVATION 1515 O a •. . . 4" SOD LAYER 4" SOD LAYER ,' DARK BROWN TO BLACK; CLAYEY SANDY SILT WITH OCCASIONAL TO FREQUENT BROWN FINE SANDY CLAYEY SILT WITH OCCASIONAL ROOTS (MEDIUM STIFF , NIL. TO STIFF) ' ORGANIC MATERIAL (MEDIUM STIFF TO STIFF) • 2 2 BROWNISH GRAY CLAYEY SILT, TRACE FINE SAND (STIFF) , 14 " : L. 32% - 84 MOTTLED DARK GRAY AND GRAY TO DARK GRAY CLAYEY SILT WITH DCCA- LL 41 SIONAL ORGANIC MATERIAL (STIFF) P1 = 12 17 • 28% 91 II 4 4 F I w-. GRAY CLAYEY SILT (STIFF) 16 • 27% - 93 II 6 iU E u. z ML LIGHT BROWN CLAYEY SILT, TRACE FINE SAND WITH REDDISH BROWN • I STREAKS (VERY STIFF) 27 I-- 8 ?.7 b 97 • st 8 w LL a a L MOTTLED BROWN AND GRAY CLAYEY SANDY SILT (STIFF TO.YERY STIFF) • - 10 • n- 10 • 0 4 - 37 • 25% 101 - ML YELLOWISH BROWN FINE SANDY SILT, TRACE CLAY (HARD) • 12 _. • Nil_ YELLOWISH BROWN FINE SANDY SILT, TRACE CLAY (VERY STIFF) 12 37 30a - 94 • • 1, 14 14 BORING TERMINATED AT SCHEDULED DEPTH (5-25-83) WATER LEVEL NOT RECORDED DUE TO INSUFFICIENT TIME TO ALLOW ' • THE WATER LEVEL IN THE BORING TO STABILIZE 24 28% - 96 16 , • BORING TERMINATED AT SCHEDULED DEPTH (5-25-83) , 18 • • �1 • BORING 7 yr ELEVATION 1511* i • n1 • 111111 6" SOD LAYER .1., f � .DARK GRAY CLAYEY SILT WITH OCCASIONAL TO FREQUENT ORGANIC MATERIAL t ' ' � 'r (S4tIFF) ,, %„� OH //' ;o d 2 , 10 s�' d t 0 if ,P. Jyf ,/,S, WATER LEVEL (5-25-83) 12 � MOTTLED DARK GRAY AND GRAY TO DARK GRAY CLAYEY SILT WITH DCCA- E�• 4 ' 46% - 72 SIGNAL ORGANIC MATERIAL (STIFF) IQ LL = 80% DAMES & TYPE-U SAMPLER °w PI = 37 NUMBER OF BLOWS REQUIRED TO DRIVE SAMPLER X 14 1 FT WITH 140 POUND WEIGHT FALLING 30 IN. ', UNDISTURBED SAMPLE 6 MOTTLED GRAY AND BROWN FINE SANDY CLAYEY SILT (STIFF) el DISTURBED SAMPLE LABORATORY TEST DATA FIELD MOISTURE CONTENT, % DRY SOIL WEIGHT „SIN SITU DRY DENSITY, LB/CU FT • 32% - 84 u. 8` LL = 41% LIQUID LIMIT PI = 12 PLASTICITY INDEX z 20 GRADES WITH OCCASIONAL ORGANIC MATERIAL El- i--• 1G 52 - 70 w • • 12 • • • • • 14 GRAY FINE SANDY SILT (VERY STIFF TO HARD) • • 39 ,. • , 41” - 80 16 NOTE;11 DISCUSSION IN THE TEXT OF THIS REPORT IS NECESSARY PROPER. UNDERSTANDING OF SUBSURFACE CO1DITIONS LOG OF BORINGS . ., . . t`! �e{ 1g BORING TERMINATED AT SCHEDULED DEPTH 5-25-83 REVEALED BY i}iE BORINGS. ,; ,, f.11�i4 ,alt.LNJ JIIn•=w� S IY Dames Moore w.1. ILIe .. 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M1 d4 ';',4,..-.' } n . r r t ,, •,- r • YafY ,I.ti,x^!T`I'}r_.v .. ..,r��'.. -....:. ir(y„a- ... ..,... ly -. ;i s•r.,.{ar rw•an, ...., : :,. . ._- .,..,......,.... . .. ...-3.S•„+.,. ;+w N t L ...+rx..- .,H.a tx..,..... ,..,..t..,w:,.,.,:+♦...,.w.,.:.... ' - .... u r • x Y , • y ,: ,,..•...r.. a :::1:':*”..:::::,'a: i • A I yI1 , A pi.,,I ', . n . 4 %/ 'r � i t y i _ : I , :• a�' s..-+w .. .r! r_ _ , . YKy- uw,.+a _°a�a,v,.r�.ry.,r 7tMa. .•„ f, �'„T 0 r :v S +'r4`t�'M.N�AW«TM, M r : 1 � r ,W�' a ■. r'"a" a.n . , f�• ^ �—�^�r. 14� byi Y.A•f.!-..-w.:§n«wwu w..e+s_4'.n�a.I.._v•r ., . _,w e 4�e•Y�.,x.+.,rw r +:+cr+s Y. ..e,e tt S,_.r,Reve.C:tta<� r r^ ..�aMawti ._ MN<,yu..,an,- „«. rq _4 an w,w.. �a... »�... , : f + . ..LL a 4 iw >, n,a "s „• • • • • • • • • • p , :. 11' MACKENZIE/SAITO & A SSOCIATES, P.C. /V14 4/ 4 TIV)v RECORD OF TELEPHONE CONVERSATION Master Plan Flood Plain Study 4111Y in 281033 . 001 , 1 -83 JOB Hunziker Road JOB NO s 5-12-83 9 ;00 U r1GARD DATE TIME INCOMING CALL 0 PLANN1 G DEPT,, Bill Monahan PERSON OUTGOING CALL 6 City of Tigard 639-4171 COMPANY PHONE NO. • SUBJECT:.........,_E,Wir_a_t_LC>J1_52.L.the _c_.?Lty 01 Tigar_d_Sits-1__Dataan Review Approval ris 9Loo REMARKS Bill indicated that the expiration date of the design review is one year. The site design review approv- - al will expire unless construction is started within one _ year. However, the fill required for the Los project has no expiration date; therefore, after we receive a per- mit to do the fill, it can take several years as long as N 1 it is proceeding. We should indicate in our fill permit the approximate phasing that we anticipate. In that way , the City can review the process and will be able to re- Distribution; spond to public inquiry regarding the process. Placing Bill Monahan the fill on the site does not constitute starting Construe Boward Losli tion Under the design review approval. Design review Dave Larson approval is for building; therefore, construction of the building must 8tart within one year after approval of the PILE fi site design review. siortEiture .40,„dif mo..0.1.to.rs OM' mr Gary t. Tho tn, PE ENGINEEAs PLANNEAs • 0690 S.W. E3ANCROT STREET 1/4 PokTLANbt OREGON 9/20i PHONE 503/P24-9570 '••••••••■ MACKENZIE/SAITO & SOCIATES P C ' ti 11/1611 TOM , April 29, 1983 MAY C 1983 CM OF TIGARD PLANNING DEPT. • City of Tigard • 12755 S.W. Ash Avenue Tigard, Oregon 97223 ATTENTION: Mr. Bill Monahan Dear Bill: RE: Losli Master Plan/Flood. Plain Study Hunziker Roado Tigard M/SA Job 0281030.001 Thanks for taking the time to discuss the development of the Losli property at 80155 West Hunziker Road. As we discussed, the Hearings Officer approved the fill for the proposed building on August 31, 1982. You indi- cated that this approval has no expiration date; there- fore, the remaining steps for City development permits are: 1, Vile for and Obtain a Fill Permit: ror this we must satisfy the conditions of the Hearing Officer's approval. • 2. File for and Obtain Staff Site Design Review Approval: We must satisfy the requirements for development in an M-3 zone. 3. File for and Obtain a Building Permit for theIiI2iegt. Thanks again for your help, • Sincerelyi • dee, rime Oat t. Thronton, P.t. Pro'ject tngineer OtT/jMt AFici-IrrtolS • 5NGINEERS OLANNEhs 0690 W. OANCOOFT STREET • PONTLANbb otIEGON 0720i • [31-40NE 503/224,0570 - - - , .. . . . .4. BETH BLOUNT ATTO \EY.AT LAW , 2437 Pacific Avenue, Forest Grove, Oregon 97116 • Telephone (503) 648-4887 •, August 31, 1982 • , Liz Newton Tigard Planning Department 12755 SW Ash Tigard, OR 97223 Re: Hearings Officer Orders . . Dear Liz: • Attached please find the final Order for M 4-81. Please attach the staff reports marked appropriately, and submit to the City Recorder for filing. There were no exhibits in my possessiOn for this hearing; any that you have retained should be kept in the permanent file of the City in the event there is an appeal. Very tr you/S, • • • :313 11114 E3LOUNT A100°.Pr. .iearings Officer • BB/cem Encl. • (41 1 1 BEFORE THE HEARINGS OFFICER FOR THE CITY OF TIGARD IN THE MATTER OF THE APPLICATION FOR ) No. A SENSITIVE LANDS PERMIT FOR CONSTRUC- ) 4 TION WITHIN THE PLOODPLAIN IN AN M-3, ) M 4-81 LIGHT INDUSTRIAL ZONE; Donald A. and ) E. Howard Losli, Applicants. e ) The above-entitled matter came before the Hearings Officer at the regularly scheduled meeting of August 12, 1982, at which time testimony, evidence and the planning department staff report were received; and The Hearings Officer adopts the findings and conclusions ' contained within the staff report, a copy of which is attached hereto and incorporated by reference herein and marked "txhibit A" ; therefore IT IS HEREBY ORDERED: M 4-81 is approved subject to the fo1lowiqlq2nditions: 1. A detailed landscape and irrigation plan shall be submitted with the preliminary development plan. rhe applicant Shall propose an engineering plan to the Engineering Division of theCity to fill to 152 feet, The plan • shall propose specific excavation to offset fill and Shall be approved by the Engineering Division prior to the issuance of any permi . 401P A 5oi1 s investigation by an approved soils engineer 0 M 4-81 Page 2 of the area to be filled shall be made before and after the filling and excavation occurs. 4. The material used for stream bank protection shall be as required on the attached plan from the City of Tigard Drainage. • Plan (Figure 06.1) 5. All unused lands remaining in the 100 year floodplain Shall be dedicated to the public prior to the issuance of any permits. The dedication document shall be recorded with Washington County after it is approved by the City. 6- A drainage plan shall be filed with the Preliminary Development Plan. • DATED this 31st day of August, 1982, HEARING OFFICER APPR 4D: / //bETR BLOUNT ////' • // H. CITY OF TIGARD, OREGON NOTICE OF PUBLIC HEARING NOTICE IS HEREBY GIVEN THAT THE CITY OF TIGARD'S HEARINGS OFFICER, AT A • MEETING ON August 12, 1982 AT 2 IN THE CONVERENCE ROOM OF THE DURHAM WASTE TREATMENT PLAN, CORNER OF S.W. HALL BLVD. AND S.W. DURHAM ROAD, TIGARD, OREGON, WILL CONSIDER THE FOLLOWING APPLICATION: FILE NUMBER: M 4-81 NPO #: 5 APPLICANT: Donald A. & E. Howard Losli OWNER: Same 8015 S.W. Hunziker Road Tigard, Oregon 97223 REQUEST: For a Sensitive Lands Permit to include channel improvements, and cut and fill within the floodplain, for future development of a building, landscaping and open space. LOCATION: 8015 S.W. Hunziker Road (Wash. Co. Tax Map 281 1BD lot 300) (See location map on the reverse side) THE PUBLIC HEARING ON THIS MATTER WILL BE CONDUCTED IN ACCORDANCE WITH THE RULES OF PROCEDURE OF THE HEARINGS OFFICER. TESTIMONY MAY BE SUBMITTED IN WRITING TO BE ENTERED INTO THE RECORD. PLEASE CONTACT THE PLANNING DIRECTOR AT 639-4171 FOR FURTHER INFORMATION. TIGARD CITY HALL IS LOCATED AT THE CORNER OF S.W. ASH AND S.W. BURNHAM STREET 12755 S.W. A5h Avenuei Tigard, Oregon 97223. _ . . . , . ,. , •,. ... . . ,,-', •'.,,, , •. , „ , . ir,, , .. • 1 , . , . r t , ( 1 .4 ' t. '• • . l' '• ,. • . '......--L-.1-.......-__J 1.__`.. ..=.1.t.---L. . ., 1,.1........!—,......, ' . 1 1 " ! ........_, I-I—I .10 . m ........:... . , \ ..._. i 1 . . 1 _. _ I i ,:. '4'.....4--- .. , I ri , . * —1-.. Y ! • • • I 1 ' '--I - 111 111, . ,5; i ! 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II . ..• . 11.1r IIMTAW41131W...4211.4. ..4*,...... 410 .Com .36 ' ......` `. -...,....\ ' . . .■41tvir.".544Z41111r1PFIF. . . ill I" El 1111111 ., ,.. \ WI ., . 1 -4 ! . • . W.SietSIOW 4Ak,,y14,'„;■-e4r Irk 1 Igo , 7,10. ., ----7 4# tr..„ .,,*, .,.,..,.■ . ' No -. . . , 41 4 .1 lipla 1 L',. - 1 . / . '//' . .' ' 41*, W ' . . IIIIII its„ , . 1 \...... I "at /''/' ', 411110• 4IPV401*r, . II ani. ' : ,t i ... ,.....;,,..)//•.■ -... .,.: --.4., '.. liWp . . 0 J 4 / ' 4 IN eta .,.. 7 , ,.. .#0,410,0Te 0.S. _Nwrieffiiii i , / , ., 411fr •4 40 ili . " ii ', , . ....... .,., ,, .. ,..... : .' , IP' ,,,,/ \\\,,,,,, 181,\'''------7 IT/ , 1 , .,, , ,,„, . ' 4r \ '• ; . . , •■■ ■ • •• " I /■Gr•-• , I '`‘.r.• c+44' / /, 4- , i 1 - '''', \ / i '' t / 1 i \ ,, \ / / '--...-1........4-,..i...... .i. ....- .. ' i' 0 1 . I • iw IVA Nt, I Li 4 I . le ':'. 404 '' ,--,, •• ------ i.. ." ,440 te • .: .v._ , , ,* \/ v ' ...4 0,„ . ., ..., I ' .4,1 W....A...4.0,-ns....4.................. . ,, i, :, . ' '‘c ( '• • r•••••• _ ,-_ 7 .., . 0 1 . el R I• - , ■ . . • ' 53 • * . 411 _ I , . , L,, : * t, ct t.. i.„ ts\a........,\ . 1 w 1 it ' 4 ,,• , . : 41,010 di.tAitA , ,.. , • .. ' —__ it , . , • ...i g i 1). ■ I, 1 siW . 1.. I. pio tiv oill • -.. ......... , Ij Li 17, i'"*---- -. .- ----..--_,,.,„-. . ' t , t ,,_ I i c . , L_L-,--. 1 _i___.—..,*1 ( ' !! • ' I ! I '0 II \ I ' : I ' I 1 2 1 t Aijeet I I .. 3111 s , ... .... .... . . . , • - , - . '-- , r", • -, 1 . , , . , 1 . , .• . e . • / STAFF REPORT YT AGENDA ITEM 2.1 CITY OF TIGARD HEARINGS OFFICER AUGUST 12, 1982 - 7:00 P.M. DURHAM WASTE TREATMENT PLANT - CONFERENCE ROOM Corner of S.W. Durham & S.W. Hall, Tigard, Oregon A. FACTS 1. allEEL INFORMATION CASE: M 4-81 Sensitive Lands Permit • REQUEST: For a Sensitive lands permit to include channel improvements, and cut and fill within the floodplain for future development of a building, landscaping and open space. RECQMANDATION: Based on staff analysis of the technical information supplied by the applicant and site inspection, staff recommends that the Hearings Officer approve the Sensitive Lands Permit with the conditions listed on page 4 of the staff report. APPLICANT: Donald A. & E. Howard Losli OWNER: Same 8015 S.W. Hunziker Road Tigard, Oregon 97223 LOCATION: 8015 S.W. Hunziker Road (Wash Co. Tax Map 281 1BD lot 300) NPO # 5 LOT AREA: 5.3 acres PRESENT ZONE DESIGNATION: M-3 Light Industrial NPO COMMENT: No comments from NPO # 5 had been received at the vriting . *4 of this report. PUBLIC NOTICES MAILED: 13 notices were mailed on August 2, 1982. No comments had been received at the writing of this report. 2. BACKGROUND On September 8, 1981, the Tigard Planning Commission tabled the applicant's 4 4 permit request for a Preliminary Plan Review and .n4 ensitiv Lands until such time as staff could make a recommendation for approval or denial based on full consideration of material submitted by the applicant. At this time, the applicant i8 requesting that only the Sensitive Lands Permit be considered. 3. VICINITY INFORMATION The property to the west is toted and developed for light industrial. . • 4 The area acrOSS Hunziker Road to the south is also toned and developed as light industrial. 114 • . y STAFF REPORT ♦ AGENDA ITEM 2.1 -- M4-81 h y � Page 2 The property across Red Rock Creek to the east is developed as light industrial. To the north of the subject site lies the Park 217 Industrial/Commercial Development and Highway 217. 4. SITE CHARACTERISTICS The property is approximately one third developed as light industrial. There is a large building on the southern end of the lot surrounded by paved parking and maneuvering areas. The land slopes to the north and the unbuilt portion is grass covered. B. APPLICABLE LAND USE POLICIES AND STAFF ANALYSIS 1. LCDC GOALS AND GUIDELINES a. Citizen Involvement The intent of this goal is to insure the opportunity for citizens to be involved in all phases of the planning a ,. process. Owners of records within 250 feet of the site were notified by mail 29, a legal notice was published Tigard July 1982. b. Land Use Planning - All applicable LCDC goals and guidelines, NPO # 5 policies and Tigard Municipal Code sections have been considered in • review of this application. c. Open Spaces, Scenic and Historic Areas and Natural Resources - The intent of this goal is to protect land which may have a value as open spaced historic or natural resource areas. There are twelve resources to be considered in review of this g oal. The resources applicable to the applicant's proposal are as follows: 1. Land needed or desirable for open .space, a portion of this site is designated lreenway on the City's adopted Parks and Open space Plan. + proposing a flood retention area in the north The appl.i?:�:�tt is . °. portion of the property adjacent to the Park 217 Open space Development. 2. Water areas, wetlands, water sheds and groundwater resources. A portion of the property lies within the 100 year floodplain of Red Rock Creek. The applicant is proposing to eut a storm water retention to mitigate the proposed fill which will allow for construction of the new building. section 18.57.070 of the Tigard Municipal Code addresses standards for reviewing proposals to cut and fill within the floodplain. d. Areas Subject to Watural Disasters and Hazards - In the case of this site, flooding is a concern. The excavation and fill proposed by the applicant will be done to meet the requirements of the City under Section 18057.070 of the Tigard Municipal . ..pal Code. This code section prohibits any fill ot excavation which would reduce the capacity of the floodplain area ot raise j flood surface elevations ot adversely affect flow direction on up,;'tireattt or downstream properties. 4 - f 1 • V STAFF REPORT AGENDA ITEM 2.1 - M 4-81 PAGE 3 e. Economy - The purpose of this goal is to improve and encourage diversification of the states economy. Economic growth and expansion A of existing businesses should be encouraged by the City. However, the benefits of encouraging business expansion.in this case need to be weighed against the effect of the applicant's proposal on the floodplain and flood control measures. f. Public Facilities and Services - The intent of this goal is to insure the availability of public services to developing areas. Sewer, eater and storm drainage are available to service the site. Specific locations will be addressed in the preliminary and general plan review. 2. APPLICABLE NPO # 5 POLICIES .0 POLICY 22. The industrial portion of the NPO is seen as an economic asset to Tigard community and land use decisions which affect this area must be judged according to their economic implication. , . 3. APPLICABLE POLICIES FROM ENVIRONMENTAL DESIGN AND OPEN SPACE PLAN Policy 1. Designatu areas of physical limitation (poorly drained, seasonally flooded, ground instability) and incorporate these designations in the City Zoning Ordinance and Map, and develop graduated development restrictions according to the distinct characteristics of the constraints and anticipated Limitations. ' A portion of the site is designated greenway/floodplain and is subject to requirements under Chapter 18.57 of the Tigard Zoning Code. Policy 5. The City shall adopt an ordinance to regulate the removal and/or replacement of existing natural vegetation in designated areas, e.g h flood- plains, drainageways, areas of high visibility, unique habitats, or rare 44 species. Significant trees or stands oftumber shall be protected. Chapter 18.57 of the Tigard Municipal Code regulates activity within the floodplain. 4 APPLICABLE POLICIE3 FROM THE TIGARD MUNICIPAL CODE Chapter 18.57 Sensitive Lands a. 18.57.010 Statement of Intent - The floodplain district has for its purpose the pre,ervaion of natural water stora.e areas within the district by discouraging or prahibitit.......22atlicob1,2 , b. 18.57.040 Uses and Activities allowed with a Soecial Use Permit, TY7-( 5EWETUflange in the topography or terrain whith would change the flow of waters during flooding periods, or Which would increase the flood hazard or alter the direction or velocity of floodwater flow. The fill and excavation proposed by the applicant will alter the topography of the site. , . 0 • f STAFF REPORT AGENDA ITEM 2.1 -- M 4-81 PAGE 4 c. 18.57.060 Special Use Permits - The a pp licant has provided ed the staff , J and commission adequate information to make a decision on the proposal. d. 18.57.070 Standards - (a) application for a special use permit in floodplain areas shall be granted or denied in accordance with the following standards: (1) No structure, fill, excavation, storage or other use shall be , permitted which alone or in combination with existing or proposed uses would reduce the capacity of the floodplain area or raise either the flood surface elevation or flow rates, or adversely affect flow direction on upstream or downsteam r erties, or create_ _ present or forseeable • • hazard to ublic health, sa.fet and enera_l welfare. In the attached narrative (Exhibit "A"), the applicant specifically addresses the standards required for action on a Sensitive Lands Permit to fill and excavate within the 100 year floodplain. Under item B., the applicant states that the proposal will improve the channel efficiency and that the flow direction will remain unchanged nchan ged b the proposal. It is staff's opinion that b y reducing the wetted perimeter, the channel efficiency will be improved and that no adverse flow direction will occur. Under item C. in the narrative, the applicant states hat the change in velocity after construction will be less than 0.20 ft./sec. Under Item D. the applicant suggests a velocity of 2 - 3 ft/sec. . Staff would like the applicant to elaborate further on the proposed change in velocity. Under Item D., Erosion Control, the applicant addressed erosion control of native soil. The Public Works Director has indicated that the soil will not be native' and for that reason, rip rap for stream protection pW poses shall be required for a length of the contact area between the fill and floodplain. 5. APPLICABLE OREGON REVISED STATUTES SECTIONS Staff has attached applicable ORS sections to this report (Attachment "B'') C. STAFF ANALYSIS 1 • r STAFF REPORT AGENDA ITEM 2.1 -- M 4-81 . " PAGE 5 3. A soils investigation by an approved soils engineer of the area to be filled shall be made before and after the filling and excavation occurs. 4. The material used for stream bank protection shall be as required on J attached plan from the City of Tigard Drainage Plan. (figure 16.1) 5. All lands remaining in the 100 year floodplain shall be dedicated to the • public prior to the issuance of any permits. The dedication document shall be recorded with Washington County after it is approved by the City. 6. A drainage plan shall be filed with the Preliminary Development Plan. p. 1 PREP D BY: 11z:b h`A Newton APPROVED BY: William A. Monahan D T) e � Associate Planner Planning Director ' r AFFADAVIT OF MAILING STATE OF OREGON ) County of Washington ) ss. City of Tigard ) I, Diane M. Jelderks, being first duly sworn, on oath despose and say: That I am a Secretary for the City of Tigard, Oregon That I served notice of hearing of the Tigard Planning Commission of which the attached is a copy (Narked Exhibit PO upon each of the following nand persons on the day of 22.e22._ 1982, by nailing to each of them at the address shown on the attached list (Marked Exhibit B) , said notice as hereto attached, desposited in the United States Mail on the day of 1982, postage prepaid. • Subsaribed and sworn to before n on the ..:/7-1 day of 1982 itgo. • 4'6 5 1' PUBLC OF OREGON My Commission, Eire : • .e,: , • . ..fie •. r.� , \ w A 1 r , AFFIDAVIT OF PUBLICATION • STATE OF OREGON, • COUNTY OF WASHINGTON, ss' it r r;° r, .....John W. Marlin. . • being first duly sworn, depose and say that I am the .publisher .:_............ .......:..: ' of The Tigard Times, a newspaper of general circulation, as defined (r '' by ORS 193,010 and 193.020, published at Tigard, in the aforesaid county and state; that the legal notice, a printed copy of which is hereto annexed, was ' published in the entire issue of said newspaper for one successive and Jul 29 1982 . consecutive weeks in the following.. issue ..., ........�'.. .......t...,.... «....... (Signature) d '�U.. " ' L Subscribed and sworn to before me th : ................w »... day of • ?J . @,) ` I ; . it 1- FALIAU.3 t: C' 1. 19.8 2_,.., „... , o , 1.i - 4a, : C K v ` e (��J G'Y /"/ Notary Public of Oregon . 8` r commis si on expires ... . .t,........-...... .............. 1s. ,r .'w w woo W ng viii be i iiaa" '" , :. , ,,r, ;,.,'°ri 1 ii i ��he id to � �f �� " * t its 1082,,:at 7;00'p:nn,at Durham '"ati,s, # , 1 ht, �,`Ix. .t ,\I �. �In tal, ' Ore one �; oji r. s .,`r �! rc ,'• ."VV Tilt ' igard. g �„ -? .p �,1�ir 1 n ng Director at 1275SS W. 1 t i.639.4171, ;, ` t; 1i. . i 2,1 SENSITIVE 1<,A1 Ds 4. hive a� .orrr �to 3 ,�,r ue,t by Donal.Y ,. ,l,Lc for` . ` , . int l�tide channel'iiirtprover ent,an cut and fill Within the floodplain,f oir tut xe nd,opea:Spate,Property IS'i"ovate li t' development of a.li�tilding,lansl�rta i�i�'a w-� ' 8015 . ■W.rHutiziker Road.(WCT M 2S1 113D,lot 300)," ,-vt =-' . , 2,2 VARIANCE V 47 k 82 Glean Caliente NPO � ,7 t A request, by Glenn V.,Chilcdte for a Variance to the publ � ic i ipfoye till :e lde only.Lgcatcd•at'13333 '' rdeulreniea la allow iot a stdew .h on a�nrt,9e , 05th Parkway,(Wash.Co.Tax Map 2 Si 1,1)A Tax�Lota`100,200,300,400 a ,. Written comments o are encouregfd,please mi'b` ?it to tile P r.iiwipg Olt ter 1, • ve addr 1 vance',of the'bearie date, , '{ aE.tiie d00 n ad g". k, 'l r84§1--.Publish July 20,1952' rile 10 'r • A request by Donald and Iloward �� Looli for a Zone Change Planned De, • • velapment Preliminary RevieW and a request fora Sensitive Lands Pertait f to build witlhiii drainageway at 0105 8,W, l unxiker .(Washiagtoa, County Tax Map 2St 1.&A,'Tax Lot 300). • r:v ,w.ar. • • - EXHIBIT 'GA." , • [1:1 IN, C014' PORATED ESTABLISHEU 1899 8O13 S, W, HUNZIKER ROAD • TIGARD, OREGON 97223 • AREA CODE 503/684-0750 , • July 22, 1982 City of Tigard Planning Dept. • Tigard City Hall Tigard, OR 97223 ••, Attn: Hearing Officer Re: Losli's Flood Plain Application ,,• Gentlemen: In addition to the technical information submitted with the subject application, we believe it is in order to provide the fbllowing brief summary of the situation. Our property lies in the heart of Tigard's heavy in,dustrual district. The vacant, surplus land is partially in the 100-year fbood plain • of Red Rock Creek. We are planning development of this vacant property to provide for expansion of our own manufacturing opera- ., tion and to accomodate other similar uses . We believe that the substantial increase in the tax base and the provision of additional jobs will be in the best interests of the community. • Although the county assessor values it at $76,234.00 per acre, the site can best be described as an unsightly weed patch. Our pro- . •, posal will have the effect of getting rid of this blight and creating an attractive, one-story structure surrounded by landsdaping. Open space with a lake adjacent to one already existing next to Highway 217 will provide a much more attractive neighborhood vista. Con't, • cusTom STAINLESS STEEL pk ALUMINUM ABRIAtOS MEtAL spEcIALIOts 44 44 Page 2 of 2 1, .1 • All engineering issues have been resolved on our property, in- .. suring that there will be no increase in peak flood water distri- buted downstream. Provision has been made so that if our ad . jacent neighbor should decide in the future to apply to develop his own property, he can tie engineering and water impoundment into ours. Any other future stream flow plans will be compatible with this project. We trust that this general information supported by the additional data will be of value in assisting you to reach a decision con- cerning this application. Yours Very Truly, Los li, Inc. Donald A. Lash' E. Howard Losli DAL/j1f • 2 , . _ , . .. .. , . . . . .., . • ......,.... . - ., ._ , ,—, . .:. ...---,— ............... ., ,c, ...... _ . . t ,'i .. 4 H: . BY.1.:4 LAP-6M) DATE 1q....1:51.. \--(>5L- 4:-2.<-1-151-rt■& (-"tv....11:)S MACKENZIE ENGINEERING INCORPORATED , CHKD,BY .DATE ----- CONSULTING ENGINEERS ,• ' . JOB#____i_-,e,21C2,. ..________,..._ —. , SHEET NO, I. ' DF, .4: . . ItQl.E.,T - , . \/ E,9 ..-.5f",. ct:14 -ro-x--1tt.t-J -11t--15-1,c._ "24L,.--..s,e...,41...cm-)s:rtiao ..1-r Qt..) -11t-4,E 14',,R 4 '.'• . 1,7 ta, rit.'), .,. . , (11, t-{4' rzs sGc (1-15 q4J 2,g.:,- 5ec (.1v . . 3 4'5-c' 715 1,7_1.4.. Igo( \ c33 c.).- c- '2 I,/A -2-Ltot w' sec . i-t ..;..,:. c)0 o, (::,c 0,G9 - • 0,65: ( .1, 0:--79 27/0 3i 5 ec , 00 0,GI ■ 0 r7 s o .7F3 ';gc3. 41-1- st-c rl ADI s • ____ 01 7 *Itri'A-L -riki 1+11 5e c . , . , , ,.,.. --tik.Q ,kivw---b-m-ke.' qAittritee, *"(7i4-- /44,4-*O. Li- (1.4-4,'-C(.7, tle Jetp, ., i 4 ,,rd„......., P4-11-etr? ,4,...„,..'ctit'4.41- , *Pt- 1,-1'7 P trt--et (lee-4 ituv-14"` • ,... jg*e-. 1:9' ""■./ rz.e,ct (2,,,tit-, 0,44-4. ,' _ d.. 7)....1...., to"of.. ,„9.1„,,,,,,,- a, ,,,,,„,:tz„...„ ...„6„..).t.,,4, .., iiQi too A)-04-4-0-Z .4)-'6.---ii,'& e6,51"c.41.41-•.'to pa lig r2-17 1 (, v-4,,t,eL . • ,,,,w .• . „car PRO/ 1. .: 4710637 ''''‘'' 4 . , ai'164 v AO° , . MACKENZIE/SAITO .SSOCIATES, P.C. Jr RECORD OF TELEPHONE CONVERSATION g Losli JOB Joe NO. 281030 DATE _ July 21, 1.982TIME._ � INCOMING CALL 0 PERSON Liz Newton OUTGOING CALL COMPANY City of Tigard_ _ PHONE NO.; . Sensitive Lands Hearin SUBJECT,.�. - � g,_ • REMARKS Hearing is to address the section of the code in chapter 18.57 only. Zone change to M3PD will be handled at th relimina,r and general plan review by the Planning Commission at a future date It Distribution; Liz Newtdn • . 'Howard Losli • Lin Bowman Lans Stout PILE Zit • -44.01(-Nt4-.1e, •/ AticHITE0T5 Gary ThorntunTas ENoINEERs PLANNERS 0690 aW, etANdNc Pt S1i EET : I'OkTLANb, OREGON 97201 PHONE 603/224,0670 V t .'. .........'.".-••••,...4... e • , ' ■ , .f MACKENZIE/SAITO & ASSOCIATES, P.C. k d(ar i RECORD OF TELEPHONE CONVERSATION , / JOB Losli Flood Plain JOB NO 281.030 DATE _71982 TIME 2:20 INCOMING CALL PERSON. Liz Newton OUTGOING CALL CI \c\CV/i COMPANY City of Tigard PHONE NO. SUBJECT: Clarifibation of city ordinance wording r I • . . .... REMARKS_ The ordinance we have has not been revised as yet however where it states b a. •roval oftiirtpinn1.11a Commission we can now use the words "approval Authority" Which is now the hearing officer for sensitive lands issues. . . 1 .,. Distribution: • , I' _ • • _ Ttin nowman , __ _ Tins stout 1 . FILE 5/ 4 i....444444*4.4.444a.■4444444r4.444 4.4■,...44.45.444.44 5 4 ARCHITECTS Signature A ...44 ENGINEERS uary Tnornton GT/iCS PLANNERS , • . / . 0690 S.W, OANCFZOFT STREET # PoRT'I_AND, OREGON 97201 • PHoI\IE 03/224,9570 . 1 I , ...., ,. Cr int OC TEFM 11.1 t ) (, l' . WASHINGTON COUNTY,OREGON . > GENERAL APPLICATION FORM CASE No. /27# "'Si , � CITY OF �TIGARD 12755 SW Ash, PO Box 23397 ., , � RECEIPT No. * Tigard, Oregon 97223 -- (503)639-4171 [—.....— . _ 0 1. GENERAL INFORMATION FOR STAFF USE ONLY . PROPERTY ADDRESS 8015 S.W. Hunziker Road Associated Cases: Tigard, Oregon 97223 LEGAL DESCRIPTION l B T BD TL 00 INTERNAL PROCESSING: Wi.. ...___ Accepted for Pre App SITE,SIZE 5.23 Acres PROPERTY OWNER/DEED HOLDER* Donald A. & E. Howard Lo s l i By ADDRESS 8015 S.W. Hunziker Road PHONE 684-0750 . - . . _ __ Pre--App.. CITY Tigard ZTP 97223 , l Date & ime: '412,APPLICANT Same As Owner , ADDRESS Same PHONE ..... . Accep ed for Decision.. I . " CITY ZIP . By *Where the owner and the applicant are different people, the • applicant must be the purchaser of record or a leasee in - t PP P Hearing Date: possession with written authorization from the owner or an ent of the owner with written authorization The written • � ag owner t Hearing Reset To: authorization must be submitted with this a ilication [-1. application. 2 REQUIRED LETTER OF AUTHORIZATION IS ATTACHED 0 YES NO ~;- hied t mai l d Decision. LIGATION INVOLVES THE FOLLOWING: APB'. 3. THIS APp Ac:cepte for Appeal.. • FEE � FILED PAID Comprehensive Plan Amendment _. .� .�..r 3 from to By quasi-judicial Date a o£ Hearing � • Zone Chan a from to _. ._._ DESCRIPTION: quasi.-judicial .�.�,. legislative Planned Unit Development - Comp. Plan Designation: is:: concept plan detailed plan SUbdiision NPO No Major Partition Minor Partition -�"'- -`._"` zoning Districti Design Review Conditional. Use Zoning Hap No. Variance to toning Ordinance ! (Title 18) QUartet Section No Variance to Subdivision Ord: (Title 17) Sen8itive Land Permit -y,j STAPF NOTES N t Dranageway's ` i Steep S I ope ,. ` Other ' ,,. rr■ips.-- ----- -- --r . � , J GENERAL ERA L APPLICATION FORA - PACE 2 CASE No CITY OF TIGARD, 12'755 SW Ash, PO Box 23397 Tigard , Oregon 97223 (503)639.4 171 SUPPLEMENTAL_ INFORMATION _ O BE PROVIDED BY APPLICANT')_ FOR S'IAFI' USE ONLY Notice of Response 4. DISTRICTS A. • SentPre1Vd • 'es No Yes SCHOOL DISTRICT Tigard School Distract 23J '': WATER DISTRICT Tigard Water District r .11.111111 FIRE DISTRICT Tualatin Rural F.P.D.F.P. f . .'' PARK DISTRLCT City of Ticta,rd ' UNIFIED SEWERAGE AGENCY -- Seer Available: YES U NO OTHER P - 5 • PUBLIC UTILITIES . `r`. ELECTRICITY Portland General lec. .ric__ _ ..',-.1' , NATURAL GAS NorthWes t Natural Ga.,g ._ �. ,. . . . 111111 , TELEPHONE General. Telephone OTHER None 6. PUBLIC TRANSIT (TRI MET) • I NEAREST BUS ROUTE AND STOP Route 43 S to•s . H. if . • . - . „, , . . . . * 7. , OTHER IN TErESTEU AGENCIES (SPE*CIFY) 1 . - ; Division of State Lands . . CHARACTER OF THE AREA • EXISTING LAND USE PLAN DESIGNATION zONE VERIFIED ' Y STAFF • 4 NORTH Highway 217 Hunziker Road/ �aC1tJTH Light t Manu f. di 1 dn/ l 4 M -3 - � EAS'C `' Warehousing t itrli ilt- WEST avant Wholesale and storage U W-- h4.0tut6,4-rk A4-::;) ., . . L . . , , . . . , .,. - L. CASE r`�. '.13NE .�1�� APPLICATION 1 PAGE CITY O � TIGARD, 12755 SW Ash , PO Box 23397 .. Tigard, Oregon 97223 (503)639-4 171. i 9. CHANGES IN THE CHARACTER OF THE AREA WHICH AFFECT THIS APPLICATION. Please Discuss: The area has gradually been developed, with the most recent addition being the Park 217 complex. This project would be an extension of this , • gradual growth of industrial zoned property 'in`� the City of Tigard. I • 10. DESCRIPTION OF THE SITE Lot Area (acres, square feet) 5. 3 acres or 227,990 sc ft. 11 . EXISTING STRUCTURES ON THE SITE . Square Distance From Prope.rty'Line_ Use Feet North South 'East West L�.ght_l anuf acturin 32 2 000 0 0_- i ' . ' r r , • • • V NATURAL CONDITIONS 12. Percent Slope: 11/2%io to the west. .a + Average Of Each . . X3« Vegetation Types!: ge Dxame ter Percent Yes No Size Of Ties Per Size Trees x 2'' and less 10 0% Brash X Grass: X flow much o. the site is in £loodi�� lain?. 14 . F 10o ci p l a n s x _.. P � ..$,a.�. 1 . Water Courses x What type?Small intermittent 16. Rock Outcro� ins X pP� E 17 Other: The existing. building is elevated above the x.00 year t .00d lain; however, this area has been included in the 85%. 18. Ptoppted Oevel a p tn erits Please briefly tes:,.c, ra be the propobed develap. mortt. The �� o p Sed q includes channel improvement, Wand- sensu�ye land application reuested nol t s ping. and filling for future i�dustryial..develo maim. F.ctt .i d&te o ame .t _ p , includes ` building. add tio., . .. ----""^. ,........m•- . . . . , ,„ r- . . . ,, ,' , ..,,. ii, 1,t L:44, Ge'NERA1.: APPLICATION FORM - PACE 4 CASE No „ CITY OF TIGARD, 12755 SW Ash, PO Box 23397 Tigard, Oregon 97223 - (503)639-4171 . , 19. The following is 0, is not required.* 20.) Overall Site DeveloPment . . . , f --./' Residential Commercial Industrial Open Space Other Roads .Total . ••••■•••••••...41.• 1 No. of acres or square 81,875 57, 350 - 88,765 227,950 feet per use ., 1.... ' Percent of . . . 3,6% 25% - ' 39% . 100 site covera e • , ' 21. Type of Residential Use and Characteristics , • . . . 4 # of Bedrooms/Unit Type of Use 4 of Units MIIIIIIIIIIIIIII0111 ' ProPosed.,_: ils !Del __;_,_ 1111111111. ' ,...,,,_.......6.,____ ,.. . •••••■••••••■•••••4•••••■•••■•mt•■•••■•■• ■••••••■•■••••■••••••■•••••■•••••••■••• ••.••■•••••••■•■■•••••■••■••••...M.o.•••••■■••••••■•••••O■ mil min Mil ME . . . 111111111 .11......1■11■•• 22. Where applicable, please explain how the open space , common areas and recreational ... J 1 o facilities will be maintained. A flood retention area will be constructed in the northern portion of the site adjacent to and designed to compliment the open space developed at Park 217: The open space will be fully landscaped • • to create an attractive park like condition. $0 • • ' ' ' 0 • , I i • k . . . ' . • , • * * % A 0 ' b 1 V 23. If the project is to be completed in phases, please describe each phase of the project. phase I of the Work will entail grading of the site to provide the re- ' quired floodplain alterations, specifically the construction and Channel enhancement: Phase II of the project Will include development of the N buildings, parking and landscaping area. . . ' . . . • • ' • . ' A Staff will idefitify for you, whether ttlig gdctiott ig to be completed, . . , ' - • :• 9 " If 6' a ,c, �y sft,GENERAL APPl..xcATION FORM - PAGE 5 CASE No. CITY OF TICARD, 12755 •SW Ash, PO Box 23397 Tigard, Oregon '97223 - (503)639--4171 THE FOLLOWING PEOPLE, AS REQUESTED BY THE APPLICANT, SHALL BE NOTIFIED OF EACH HEARING. (e.g. Attorney, Surveyor, Engineer) staff Notice Notice Report Decision of Review Name Don/Howard Losli Street: 801 5 Huziker Road free Cit Ti•ard_ State OR Z1P97223 Name Gary Thornton/Mackenzie Engineering, Inc. Street 0690 S.W. Bancroft Portland ' • Cit State OR �ipg72O1 Name Linden Bowman Street 500 Wildox Building- 506 S.W. 6th 97204 CiN,Port].and State s Zip Name • Street City State Zip , 1 ` APPLICANT OWNER OWNER • • f • • • f'. . _ , COMMERCIAL (E )).1VDrdil",\NI COMPANY INDUSTRIAL- 500 WILCOX BUILDING • 506 SOUTHWEST SIXTH AVENUE • PORTLAND, OREGON 97204 • (503) 228-3303 r`,7 July 7 1982 Memorandum to: E. toward Losli Gary Thornton - MaeKenzie,Saito Mr. Art James -/:a z Newton - Tigard City Hall g.D.12.i.q1c1L: Losli I am forwarding this memorandum to all concerned to be sure ue all understand the scheduled hearings and the purpose in connection with Loslits application to the City of Tigard0 liestmegsjull , m. a pre-hearing conference is scheduled. The primary purpose of this hearing is to be sure that all necessary informatibn is on hand for the formal hearing later. In particular, the engineering information concerning flood control must be available to Frank Currie so that he will be able to make his recommendation to the hearings officer° MacXenzie Engineering expects to have Gary Thornton at the pre..hearing conference. Since Art James has a different approach to flood control on behalf of John Xnez, understand that Art expects to be there with sufficient data to review his idea with Frank Currieo Please understand that the time for the prelearing confer- , ence was scheduled by his secretary, Carol, while Frank Currie was out of town* I am to check with Carol on Monday July 120 to reconfirm the time of the hearing° If there is any change I will immediately notify all concerned. Thitraday_t_AsigLisLt_a_oh is the date scheduled for the hearings officer to review Loglils application° The exact time of day will be discussed at the pre e,hearing conference. Please note that this is a change from the previously announced date of August 3rd. Liz Newton told me today that she had set August 3rd in error and we should plan on August 5th0 If there are any questions, please direct them to me to avoid any further confusion° Linden -101T,'' owman LBD:mt PrIOPESSIONAL AL 5STA5 851IVICe5 ro nusmess AN 1NOUSTRY ,97# PEALCOR , S f', A/ i l COMMERCIAL SECEIVED :a JUN 3 0 1982 INDUSTRIAL 500 WILCOX BUILDING • 500 THWEST SIXTH AVENUE • PARTLAN TYLAIIB 1D7204 • (503) 228-3303 June 28, 1982 • City of Tigard City Hall Tigard Oregon 97223 Attention: Liz Newton Dear Ms. Newton: In nectx •La t with Howard Losli's request for reinstatement for his development application you have scheduled a hearing for August 3. There is one matter that perhaps should be brought up to date for the benefit of the Hearings Officer and the City Engineer. This concerns the suggestion that perhaps flood control on Red Rock Creek might be handled by enlarging the culvert under Hunziker Road thereby flushing any peak floodwater on down stream to Fanno Creek. This idea was advanced by Art James, the engineer for Losli's adjacent neighbor, John Knez. Frank Currie thought this might be feasible depending on an evaluation of the site of major culverts down stream under the Southern Pacific and. Burlington Northern Railroads At Mr. Losli's request we contacted the down stveam property owners and received their responses which we have previously distributed to the interested parties. Copies are enclosed as follows : 1) January 28th Bowman Company letter reviewing the situation. Y 2) February y 23rd Cae Manufacturing Company's response (Fred Fields is speaking both for Coe Manufacturing and himself personally as he is a large property owner On the creek himeelf d. •6 . 3) April 1st response from Palmer G. Lewis Company indicating support of Fred Fields' position Ir1 Logil indicated in his request for a hearing that he is willing to go along with either method of flood control acceptable to the city. • ,.». 111 011oPesSibNAL tiNq.EsTATS sEtIVIO .i OR 5USINesb ANb INbUsTAY PEALTOR • • r ' B M 4 City of Tigard - 2 - 6/28/82 He feels that the Art James approach is beyond his ability to control j r. because of the position of the down stream property owners. He would prefer to resolve the problem as recommended by MacKenzie? Engineering. His primary desire is to have permission to go ahead with his develop- ment plans at this time. Yours very truly, BOWMAN CO• �A,►► inden B. Bowman cc: Howard Losli Art James Enclosures LBB/j r • • • • • • k, r, r f � r..• If"„ 4 Ni<h. +r ..ila, r�..hllrµWl s�,. • 1 r '+ y r ..- . . ....•n. r •. •. i.il, d' . •.::h1': .Z'f..,M. ..tf�....�I :l,e.I.:tP�.h...�«n.r F..,L1,(r,..i • L( 0 11/4 0 clt3 [] INCORPORATED ESTABLISHED 1899 8015 8, W, HUNZIKER ROAD TIGARD, OREGON 97223 AREA CODE 503/684-0750 June 17, 1982 ° CITY OF TIGARD City Hall Tigard, Oregon 97223 Attention: Planning Director Subfect: Request for Hearing Gentlemen: Last August we submitted a request for necessary approvals so that we could plan for development of our property at 8015 S.W. Huhziker Road, and start work on site preperation. Detailed engineering and supplemental information was prepared by Mackenzie Engineering, and presented by them at a Planning Commission meeting in September. There appeared to be a lack of understanding of the engineering recommindations possibly because the City Engineer was on vacation biiriT66kenzie's data had hot been reviewed by him, The Planning Commission took no action at that meeting. We understand there seems to be two issues, one being the use of open space in our industrial area, and the other concerns the best engineering solution to flood control on Red Rock Creek. Regarding the use of open space, We requested a meeting with City officials in January, and were encouraged to follow up on our application when a hearings process had been established, which we understand is noW the case. Concerning the engineering of flood control , there appears to be two approaches, Macken2le handled the entire problem on our property, leaving the option for our adjecent property owner to tie ihto the saMe system in the future. prank Currie mentioned that possibly the best solution may be to enlarge drainage under Huhziker Road, depending on downstream factors to be studied. Art James, our neighbor John knezis engineer, likes this approach, but the downstream property owners say they do hot Want it CUSTOM STAIN Less siEEL ft) ALUMINUM IABRICATORS M . *. � ~� � ~ \4*~ June 17, 1982 .�` City of Tigard page 2 ` . '� Our position is that we prefer to solve the problem on our own property, but wl l l be happy to participate in any reasonable method the City Engineer wants. �. Please consider this letter our request for a hearing to follow up on our application. Please advise if you need any additional information. � . Very Truly Yours, LOSLI , INCORPORATED E. Howard Los l | Secretary-Treasurer .` ..� .` EHL/nb � .� ' w | . � 0 -- 1"-" 14E title re,v0„, k Nave , , . , , 4 (r_gc) EicrE) ......... .. April 1, 1982 Mr. Linden Bowman The Bowman Company 500 Wilcox Building 506 S. W. Sixth Avenue Portland, Oregon 97204 Dear Lin: Subject: Property Development Mr. Howard Losli Received copies of your letter of Jaruary 28$ forwarded to me by Ron Pulliam, our Tigard Manager, and Fred Fields' letter of February 23, in response to your original letter, • Palmer G. Lewis Company is receptive to listening to adjacent property owner nlans on development, and subscribe to an owner' s rights to develop his property to its full potential. However, our company feels much the same as Mr, Fields, as expressed in his letter, that we would not be receptive to an expense burden put upon us, such as an LID formation, that would not return the value to us for such an expenditure. In our own caset when developing our property, we were precluded from culverting the creek, which denied us full wcess of our property. We're still interested it pursuing this at some future date. Lint we' ll consider this a dead issue unless we hear directly back from you on Mr. Losli' s interest in pursuing some alternate suggestion, Sincerely) PALMER G)ILEW' S CO INC, (i;772,, 3. Cutler Lewis Executive Vice President JCL/c cc Mr. Ron PUlliam 4 Olgillitlitroll OF OttiLOO110 MAttRIALO 25 C Stroet Northwest,Auburn,W 98002/C2061 941-2t300/Tellex: 327-490 ifiliiilL13111"11111 ALASKA IOAHO MONTANA *WASHINGION 4OREGON CiALIrOHNIA NEVAbA MtM 1:1 - •.-.r....n LLL.r.� .'. ...... .:...........—n.......:..:.«.++.m..nM1nr..u'.-vY:.Y-ik.. ..-.rh • 1 e COMMERCIAL BOVIIMAN COMPANY INDUSTRIAL 500 WILCOX BUILDING • 506 sOUTHV/EST SIXTH AVENUE • PORTLAND, OREGON 97204 • (503) 228-3303 r •, March 31, 1982 ,•: /Mr. Frank Currie Mr. E. Howard Losli Mr, Art James Mr. John Knez Gentlemen: We recently forwarded a copy of Fred Fields' letter of February 23rd commenting on Howard Z+osli>is development plans as regards to flood control, ' { Today we received a copy of that letter with a note from Ron Pulliam, Vice President of Palmer G. Lewis Goy Mr. Pulliam's note reads "Palmer G. Lewis Go, agrees with Mr, Fields' analysis. We feel the reservoir would be the least costly and disturbing approach for all concerned". Fred Fields had indicated that he is not being arbitrary on this issue and will be glad to discuss it. Howard Losli advises that he is willing to participate in a reasonable solution to the flood problem, whether on his own property or by improving the channel below Runziker Road, It appears that " final awaits further 1 dec.iq ion on this matter awax. information from an engineering standpoint to determine just what is in the best interests of all concerned parties, . Yours very,40110011111PP den B6 Bcman LBBmr • 1,5 Ilk PriortEbioNAL SEAL s3TAYS sENVIoss Foli bUOINi 3S ANb INbUSTRY REALTOR . .,.v. -. •.. .. . Y• M ,.. w ( f� Mti^ .a l .... .. ' ..4 AHU,i.."W Kh k f..A Ur..uJ4Yk' u • • 16142j COMMERCIAL CO 11/1�A Iqi Y . .INDUSTRIAL. 500 WILCOX BUILDING • 506 SOUTHWEST SIXTH AVENUE • PORTLAND, OREGON 97204 • (503) 228-3303 March 1, 1982 r! Mr, Frank Currie • City of Tigard �r n Ci. -y Hall `• Tigard, Oregon 97223 Dear M•ro Currie: ••• For your records, enclosed is a copy of a letter from Fred Fields regarding Losli's flood control plans. Yon.>s very ruly,, Linn n Be Bowman LBB smr 1 . Bnclsd • • • L 3 ' jl i I'ROWE tbNAL REAL ss tAfit sERVIbEs,=011 RUSINti s M 1b INDUSTRY IZSALTOR y„,:.,,. , ..:r,.., ,n -.:.,,„ �,m n,r...a *.,,,.a•�r•e., .+.,,.«v... ..,•r.«r„':.a,.,s•�..i.n w,.�m..w. s..n arw-•—•wa.urrenrMubren�f tlrt n�rti+.-N ,.u�.-+.r:.J:w.wr,,,,....�-,�., Vin. '.Hwe�w.- ca1 !�.,�,,,,awe », rn 1 '( 151'ap`,a h.+a,i'�tY,r,a .•�"'��`k' .M�.",.".232C_,,�•«.N,"�#xHE.MfY. SWtW(°.rorM�1G'Jl$� 1150elvFn JN 0 198? UN OF liGki) A 4 tA / A THE COE MAN1C1FAC TURING COMP O , f° ESTAF3LISHED laSZ ROLLER DRYERS • VENEER MACHINERY .PATNE svaiorAE,Ozioro,U.S.A.4 4 0 7 7 • AREA CODE as 3,52*9381 February 23, 1982 "%4/S7 I 0`. ,41 •I Mr. Linde.n. 13, Bowman Bowman Company 500 Wilcox Building 506 Southwest Sixth Avenue Portland, Oregon 97204 . Dear Lin: I have been contemplating your letter of January 28th regarding Mr, Loslits problem in constructing a new building across the street from our plant in Tigard. 1 It seems to me that the reservoir for flood water on his property is the • most practical approach, AS yolt may know, I organized the LID to im- prove Hunziker Road, and have a very vivid memory of the costs involved, and particularly that of locating two large diameter culverts -under Hun- ziker. Those are, approximately five feet in diameter, and to replace 6.• them so Soon seems foolish, and obviously will be quite expensive, To replace those beneath the Southern Pacific and the Burlington. Northern would cost untold amounts, and. I am afraid the combination would be in the hundreds of thousands of dollars. Since I own a substantial amount of the property along that creek, I am sure my assessment would be greater than any oilier property owner, and in the case of the Palmer Lewis Company and Western Foundry, I doubt that they would cooperate since they are not threatened by flooding waters, • Even if the improvement cost were minimal I would need assttrandesi that the water would not simply be dumped onto the downstream side after cross. ing under both tailroadsi, as I own that property and know it to have problems , In handling large volumes of water under flooding conditions. • - •••■•■ 4 his \kSo February 23, 1982 Page 2 I am not trying to be arbitrary on this issue and will be glad to discuss it, but I think you are overlooking the fact that the cost of this project would substantially be greater than you imply in your January 28th letter. I will be in Portland the week of March 1st, and will be glad • to meet with you for further discussion. Yours truly, THE COE MANUFACTURING COMPANY i gltteL Fred W. Fields FWFas cc Mr. Sohn. Knez • 8185 S. W. Hunziker Road Tigard, 0,t.ego,n. 97223 • Mr. Ron Pulliam, Manager Paltrier G. Lewis Company 8100 8. W. Flunziket Road Tigard, Or gon, 97223 , • ■e• 4 1 • f I k • ( .�._ •4•, .w " . d COMNERCIAL • ,, �e phi +�i{pTbCC� t cD pA iy i JUN 3 0 1982 •N 0 u T R A L CITY OF TIGARD ''. 500 WILCOX BUILDING • 506 SOUTHWEST SIXTH AVENUE • PORTLAND, OREGON 97204 • (503) 223,.3303 . •A I. January 28, 1982 Mr. Art James Arthur M. James Engineers, Inca * 319 S.W. Washington Portland, Oregon 97204 4 p' Mr. John Knez :' 8185 S. W. Kunz filter Rd. iMy Tigard Oregon 97223 9 la Mr. Fred Fields . Coe Manufacturing Coo ,� / f' ' • V 7930 S. W. Hunziker Rda , Tigard, Oregon 97223 \\\\ ry i , 4 Mr. Ron Pulliam, Manager Palmer G. Lewis Co. 8100 So W. Hunz .lcei~ rids i Tigard, Oregon 97223 I Gentlemen: r I . . : „ Howard Losli asked that 1 contact you to advise you of his development plans and , ', ask for your support and cooperation. • Losli plans to follow through in April or May on an application to the City of Tigard for a,pprova •to construct a second building p on the rear portion of his M property in a location between the existing building and Highway 217. A portion of this area is marginal flood plain of Red Rock Creek and some of it is designated $• for greenway purposes. This means that suitable flood control engineering must be y done and a sensitive lands development approval be obtained° . i Where are two engineering approaches to handling a pea1e flood on i4lim ctgeka a° Im po n dr en to of the peals of flood water on the Losli peak upstream from o provide storage capacity for the peak of a flood. This fr replaces the relatively shallow storage area there the new building wt11 be • rd built, and insures that no gore water will go downstream Phan before the i,. • ± devo. • •• 1.optnent occurred. I,os:li has already employed engineering consultants . who have designed this storage facility. p • _ ,l tie The alternate engineering conce t; �s to increase i: ie size of the c�tivex�t 4 under Hunziker Road to permit all flood water, to pass through quickly and proceed downstr,lam to Fanno Creek° It appears that Frank Currie, the Tigard City.. Fn ineer favors this approach , - peak i;i a g , as the eak water on Red nook Creek good ; h ad t .r'ant o CreekQ Ze thanks it ould be gocid r on through and get it oubf the way' (.1 1 ilt,„ 1 1 RoptssioNAL REAL tstATE sI~RVICE,s Foil sUSINtss Alb INbUsT'iY , , .. NEALTOR!x u illIP r + c a+{-+! ,wa*p.it`o fi' ' M!..:Y�7,°'*b'n K1Spe+ r •,,.,, r M•r`tfrwr*r°r,p;+ er"y,%,,t,ti #""u' #:4`a^z^wet:*:wl:s":''lw=t^knr.i.a,w•`fifT tM^- fr�»'1rs' r171 a'9t ir - - ,r•••• �' 0 a. JO Air r � ;,. ( 6 4 Mr, Art James, et al . 2 - 1/28/82 Fry ba (cont°d) before the Fanno Creek crest arrives. 1 ' During discussions with Mr. Currie he indicated that only a limited number of . property owners are concerned. Upstream from Hunziker Road a relatively small • amount of creek channel improvement may be required between the Losli and Knez l' properties. Fanno Downstream from Hunziker load he believes the channel to ' ;� Creek would probably require minimal work, largely involving cleaning it out. t appears that this may involve properties owned by Coe Manufacturing and XI. • Palmer G. Lewis Co. as well as Fred Fields. There is, of course, the matter of cost of enlarging the culvert under ,' H�,tn•ziker Road which the City advises could be the subject of a local improve merit disiri.c.to It will be very much appreciated if you will review this matter and advise either Howard Losli or myself as to your thoughts concerning both an approach on flood con1trol and your neighborhood support for his construction of a r:+ second building, Pt r Please do not hesitate to ask if there 1.8 any additional information you may require. Yours very truly, Linden BP Bowman , • LBB mr . , . cc E. Howard Losli - Telephone 684-0750 Frank Currie City of Tigard x„,,, It te / ,,,,,e4reeital.,„..i„4 4,,,,,,,,14,14., t,,,d....4 V 67,71 ;.,:etlfe ore44":4--Z.t4e,4.- ' 4 4.„.... ..6.,60,4;e4e,16,0ee r'...14t.'°'"' (..''..".-- i ir 844.'4' eg.t.M...',...ze, „14,0-ki, ' , _4 , k .+, e....„„0,(1 , • 1/14(.4.....tkeitp-A1 ....-at-e„e...,f..o ---..p.,..... -.<2.-1L-4-44--1 , A. 4,`"7"4i 54/ ,,.e.,-.4-4 6.se-e,,&, 1 .-444. ee....1e-e „,,„,,Ze-„," ..„..;51 le r A..," Lot, d ,T,,,,eg. j.s.‘-,,e,fPr ''''' -4,G..,ea„,iiii,,, �E�- N .lr4�m< a ,..., ..s.. _t,,..:..t ..ek a«r fr -w::nwwa>ta«.:xr+Nrx .,. vto e.:...» .. . ;a: \.\a,a e,.,.,y>.:r•+.i Y'eC4e..t+ p, wtin:'w. +is a.,i-s,arM. ,.,..a. .•,.. ,a+w.:.r•_:;\-r•*+h•mw.aa l6iPaw.,;.wiV 'nr•wwt.n, ti 1 .'.r"`n.pa^w1,.W..�..�..... .o air..\r.w v.<1er.. - , :.,. YM3 '-,la., ..... ■■■■••■•■■••01.1WIMMMO ' ■lloR 4 iti440.P " " t:11, September 14, 1981 F 16 1 *'I" WASHINGTON COUNTY,OREGON Phillip R. McCurdy Mackenzie/Saito & Associates PC • 0690 S.W. Bancroft Street Portland, Oregon 97201 REFERENCE: ZCPD 24-81, M 4-81 Donald A. & E. Howard Losli ' 8015 S.W. Hunziker Rd. 2S-1-1BD lot 300 NPO # 5 Dear Mr. McCurdy: Please be advised that the Tigard Planning Commission at their regular meeting of September 8, 1981 tabled your request for Zone Change Planned Development Preliminary Review and a request for a Sensitive Lands Permit to build within drainageway until staff can come hack with a recommendation for approval or denial, based on full consideration of material submitted by the applicant, especialsv as called for by the sensitive lands ordinance. A letter addressed to the Planning Director requesting to be placed on the Planning Commission Agenda for a re-hearing is required when you have completed the Planning Commission's directive. September 18, 1981, is the cut-off date for acceptance of applications for the next Planning Commission meeting to be held October 6, 1981. If we can be of any further assistance, please do not hesitate to contact this office at 639.4171. Sincerely, • Aldie Howard • • • AHtdmi (A / 14 0 S,W, MAIN Po°, 130X 239 TIG/'ti` , OREGON 97223 PH! 635'4171 r r 1p. Y e ' • I. MINUTES • i , TIGARD PLANNING COMMISSION September 8, 1981 Page 5. x t r s .! *•** Dave Larson, Civil Engineer, discussed the engineering aspects , j ' of the property and the drainage basin and adjacent property. He pointed to the increase of approximately 160 cubic yards of adcditional. flood storage, and the improvements to the drainage channel which will improve its carrying capacity. r l *** Mr. 'McCurdy told of a meeting with the Planning Director .- is after receiving the staff report with recommendation for denial of the sensitive lands permit, in which meeting information and materials were 1 submitted addressing the Director's objections. He stated it was I their hope to commence drainage improvement work and construction of . a the concrete pad prior to the site design review. He told of meetings with the engineers for adjacent properties, and reported they were in accord with what is proposed on this property. He emphasized there would be no detrimental effects from the development as proposed to ,.,. adjoining or downstream property. • � a 1 •PUBLIC TESTIMONY in favor Was presented by Christopher James, son of Art James, Engineer, 300 Jackson Tower, Portland, the engineer for adjoining property. He suggested culvert improvements in Hunziker Road would improve the drainage from the applicant's and adjoining • 8^ property. The senior James suggests studying improvements in the .. passage of water under Httnziker Road ft relation to the need for retention facilities upstream, and that the water flow arrangements i for the two properties should be harmonized. He eUggested also that , .. in the event'of a 100. year flood, Hunziker Road could sustain damage `, by reason of its serving as a dam, which is an aspect the City might wish to look into."' CROSS-ExAMINATIOH AND REBUTTAL Tepedino inquired concerning efficacy of the improvements upstream from Hunziker Road, which rOally had not been addressed by the engineers. Speaker inquired the rationale for recommending denial of the preliminary plan review, but enttmerating conditions to be met prior to the general plan review. ICotvard reported , the a.lternat ve5 open to the Commission, the current state of dealinge With the applicant) aid that the 13 conditions represented`hie concerns as Planning Director& Speaker inquired about Condition 5 for dedica- tion, which Howard stated could be stricken as not pertinent. HO then t recounted some of the history of past negotiations on properties it the area, citing lack of cooperation among the parties at tit les, and fou in stated that id vieW of the definitely negative stand the Commission has 4 talon in the past on -developments in the floodplain he would recomMend t denim: unless there was a definite preponderance of evidence that • /. a proposed development was beneficial to the whole communityi • Tepedino commented that this is a prime eiaMplo of What ahOU1d not be done in Tigard. Re felt nothing had been shothen by the applicant that would be 'benef cial. in. the management agement of stream. floW and that Would >' 0 . ...,- l', Y .b.:.v fi.+ VW,,,,UV.•T.i (AO fit+}( bAw1.400.4ve4 ca, ,►♦&..vvr..M....ww.• ...r,,va+N„r_.. ...:....... - . . .4 ZO , ; --t-...; „En_D1VELO• .a , vol--„, 1:, -,. 'PA 2 •:1 ` 1.1SI TIVE LAN T:• ` it ■ .LaSLI NPO # • A request by Donald and Howard Losli for a Zone Change { . Planned Development ?x'e1iminary Review and a request for • . a Sensitive Lands Permit to b:tild within drainai♦eway at r . 8105 S1'Jiunikr (Washington County Tax 2. D t TLx .! Lot 300). I, Y Y• ;Howard read the STAFF REPO and RECOMMkND.ATIONS The APPLICANTS PRFS TATION was made in three parts, all by staff of'Mackenzie/Saito and Assoc., 0690 SW Bancroft St , Portland: *4* Philip McCurdy stated, their purpose was to get approval for ' construction of a h e:v building' and en add�tio.n to an existing building in the floodplain; and that the pro ,posed improvements will not be detrimental to the adjacent or downstream properties, but rather that the improvemento should actually lower the 1.00 year flood level on this and adjacent properties. He gave an overview of the project with ,,. the aid of a map on the wall. 4#* Tom Wright adcl.reseed Policy 25 of NPO #5, stating the proposed uses are light ind}.tstria1 rather than commercials and there , fore the restraints indicated by the policy do not apply. He stated the requirements for sensitive lands permit have been complied with • and that staff agrees With the applicant that extensive open space is ', not necessary in this area on this developnteh t fir, • r 1 94 •i j.` ' , j ,e.r„,.,, aw+..a aw. •m,.0 r ar..,m,r .a ,.x m r,.r nt !rv.. .... -.. - r rc, s.l . r t a • 's r • C v, MINUTES ' TI GARD PLANNING COMMISSION . September 8, 1981 Page 6. • • • justify siting a building in the floodplain. Owens inquired of James the relation of the Hunziker Road situation to the drainage problem. James was uncertain, but felt his father might write a letter expressing . - p . his thoughts on it. • Moen explored with Mr. Larson the relation of the present con- • Stxic ion, to flow of Hunziker to the improved stream condition contem- plated by the developments Larson stated there would be greater ' retention under the proposed plan. Moen commented it would be pretty late to ask for site design review after the drainage work had been done and the building d constructed. g p' Gary Thornton of MacKenzie/Saito discussed the stream Character- istics of Red Rock Creek (very low velocity), and the of feat Of improve mente to the culvert in Hunziker. He affirmed the soundness of their plan, stating Other engineers agreed With their views. COMMISSION DISCUSSION AND .ACTION. Speaker commented that while information from the applicant may be adequate, the city l s 'staff, including the Public Works Director, have not digested it sufficiently to render a recommendation, either favorable or unfavorable. Until that happens he felt the Comma scion is not in a position to pass' intelligently on it. Therefore Speaker r1OVED for tabling until staff Can come back with a recol"ondation for approval Or denial, based on • ftil . consideration of material submitted by the applicant, especially 7 f as called for by the sensitive lands ordinance. Tepe ino ssconded the �! • motions After a little further disOussion, the motion passed five to . one with Tepedino Voting to • aye IP „„r �I a , �,..(«.... .i .,...... .................-...«-....:. ..._....I ':.:.µ W ,.,OJ.:L.uI.G: ... ,_... .. _. ..♦...W...k..,. .. _ ...- w, -w.,.. - ,r.."r,..•r ,ru.»,,.,., r _ J t,, } ,, 4r' '.r"-: ;.; � 1...,�..,:. �w*,j. .,.�::... -�. �, is Vii. Fx Nor �y", , ,i y � ! . '� � •y fi +'f k ar,, s ff' r ' , ! : i 4 ^ v. NOTICE IS HEREBY GIVEN THAT THE TIGARD PLANNING COMMISSION AT ITS MEETING ON TUESDAY, 8,September 8, 1981 , AT 7:30 P.M., IN THE LECTURE ROOM OF FOWLER JNIR IGH P SCHOOL, 10865 S.W. WALNUT, TIGARD, OREGON, WILL CONSIDER THE FOLLOWING APPLICATION: APPLICANT: Donald & Howard Losli OWNER: SAME o. 8015 S.W. Hunziker w Tigard, Oregon 97223 ,, 1 , REQUEST: A request for a Zone Change from.City of Tigard M-3 to M-3PD; a request for a Preliminary Review and a' request for a Sensitive Lands Permit to build within a drainageway. LOCATION: 8105 S.W. Hunziker ( Washington County Tax Map 2S1 1BD Tax lot 300) FILE NO. : ZCPD 24-81, M 4-81 •' L.--- , �N 1 �< : 1. . S. ....... . ' ............\............) 1 { ---T-1' s 11111111 a ---------,„.._■ : x `1 MO y A D ' r / pga MINIIIIIiiiii r . 1=1,5.r. Lij.., . gfr, ...‹, i , ,...,„,,,, Ago, .0— III ...4, m , 1 i ik›,„0:0 iii., . c . a ii , 4 II ' , .. sr , -, , ./...„..............„,„„ .„:„............. . 7....c......T . ... , „.... / ,, i . .. ,„,, T. PUBLIC HEARING ON PHIS MATTER WILL BE . � COtJ17UCTV.0 IN ACCORDANCE WITH THE RUJ`,►E5 OF PROCEDURES �. OP T-IE PLANNING COMMISSION, ANY PERSONS HAVING INTEREST IN T818 MATTER MAY ATTEND AND BE HEARD," OA, TESTIMONY MAY BE SUBMITTED IN WRITING TO BE ENTERED INTO THE RECORD 0? THE INITIAL HEARING. m ' SHOUIJD YOU WISH TO APPEAL, A WRITTEN LETTER ADDRESSED TO THE CITY RECORb R MUST BE RECEIVED '' PRIOR TO Tf E 8XPIRATION O? THE T WE DAY AFTER THE DECISION OF THE HARING. IV NOTICE ' t TO APPEAL IS Nair RECEI l VEE WITHIN TWENTY DAYS', THE ACT/ON IS VALID. v ?on FURTHER INFORMMTtON i PLEASE CONTACT THE PLANNING DEPARTMENT NT AT 639-4171 r' CITY C? TIOARD, 12420 'SW Main Tigard, Cregoia. 97225 „,nt WvxJ. V. • 14 AFFADAVIT OF MAILING STATE OF OREGON ) County of Washington ) ss. City of Tigard w I, Diane M. Jelderks, being first duly sworn, on oath despose - ' and say: , That I am Secretary for the Planning Department for t the City of Tigard, Oregon That I cerved notice of hearing of the Tigard M 4, Planning Commission • r of which the attached is a copy (Marked Exhibit A) 1•1 each • of the follo wing narrpd persons on t�e44. day of 1981, by nailing to each of them at the address shown •s the attached list (Marked Exhibit B) , said notice as hereto attached, des-•sited in the United States Mail on the day of . . ..:wc..�; 1,981,.postage prepaid. 4 .j i Subscribed and sworn to before me on the r.. 7 da Y of ,I_ , 1981 G r •n k " � :� is a `ti .t=ae q r r v h t j . ,b N - PUBLIC OF OREGON r u • `M Cornti.ssi,on Expires: ' -r , Y , i • j , • r • 1 , • + J. r 1 • S r l• ;_ - .�.. •�•'.. •, . r,.lr 1. :._n,, 1 "_ 1�+Y�':, M1l..Vl.: +'1� .,, '1.'•,• uJ.!'t.- ':S a 'mot'.• ■ ** ,•, ! G✓v y ++ rr.-,, yl....':r .. a I ::«•.• .. I , A ,• .,:,l.af ..,r�:b..,. r .•1..:.• ,... ... ' '' )• , SOIL CHART ii • I GRADATION CHART MAJOR DIVISIONS GRAPHIC LETTER • TYPICAL DESCRIPTIONS ,, • r SYMBOL . SYMBOL T• • 1►'• +c WELL-GRADED GRAVELS,GRAVEL GIN SAND MIXTURES,LITTLE OR NO PARTICLE SIZE ...r'' GRAVEL 4.6..r m; FINES ANDr _ _ __ ▪ 4 ~LOWER I� L I GRAVELLY CLEAN GRAVELS �•A`.•; +, LtJ' 1. LIMIT UPPER LIMIT SOILS (LITTLE OR NO ••••b•••••' POORLY-GRADED GRAVELS MILLIMETERS SIEVE SIZE* MILLIMETERS SIEVE SIZE* bt::.:b::: _._.�.�. --- .r 5 ,44•• GP GRAVEL-SAND MIXTURES',LITTLE FINES) COARSE ®... OR NO FINES SAND GRAINED .d •... • FINE 074 200+ 0,42 40 SILTY GRAVELS,GRAVEL-SAND- , RAVEL-SAN 9_ MEDIUM 0,42 4O 200 IO +�+ GM SI LT MIXTURES • • GRAVELS WITH FINES C..)ARSE 2,00 #10* 4,'15 * 4 * • MORE THAN 50% OF COARSE FRAC- r • (APPRECIABLE / GRAVEL TION RETAINED AMOUNT OF FINES) , * �,r / FINE 4.76 #�4 ig l + 3/g11 ON N0.4 SIEVE � CLAYEY GRAVELS,GRAVEL-SAND- E T .0 GC CLAY MIXTURES COARSE 14.f 3/411• 76.2 311 • r 12 , .„ • C08131.Ea 7G 2 3`" • 304 8 12 • i.....,;..� r: • a ! °o ° n 0.: WELL•GRADED SANDS,GRAVELLY BOULDERS U.S. -- • •.30 1r 12 • r 914.4 3r. ... U•S. STANDARD CLEAR SQ BARE OPENINGS ,•0 SW SANDS,LITTLE OR NO FINES {•I CLEAN SAND ■ o °0• ' ... AND 00 00 ° (LITTLE OR NO ° • ° • BANDY FINES) + ,, r-- ,,, SOILS r # r' POORLY-GRADED SANDS,GRAVEL• P MORE THAN 5U%, SP LY SANDS,LITTLE OR NO FINES 1 OF MATERIAL IS ,,,,;;;'::,,.. * LARGER THAN NO ::iii:;%•.:.':°i 200 SIEVE SIZE 1 [Ill _.� 4 SILTY SANDS,SAND•SILT • a SANDS,WITH FINES , MS MIXTURES MORE THAN 50/a :.11 TION PASSING AMOUNT OF FINES) /' CHART OF COARSE FRAC- (API�RECIABLE , PLASTICITY NO 4 SIEVE •• CLAYEY SANDS,SAND-CLAY • • fr? SC IXTU M RES • 1./QUID LIMIT 0 10 20 30 40 50 €0 70 :..8 A.. 1.1.6....� �.60 . . r _.. . . . 8 INORGANIC SILTS AND VERY FINE ML SANDS,ROCK FLOUR,SILTY OR .. CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY is FINE SILTS INORGANIC CLAYS OF LOW TO • 54 0 GRAINED AND LIQUID LIMIT • CL MEDIUM PLASTICITY,GRAVELLY Z LESS THAN 50 CLAYS,SANDY CLAYS,SILTY Q } SOILS CLAYS �"+ 1 i I �; CLA`rS,LEAN CLAYS I I I ORGANIC S)LTS AND ORGANIC �. I1 1 1 1 OL SILTY CLAYS OF LOW PLASTICITY r , II 4� m i I I I � , L,/ • INORGANIC SILTS,MICACEOUS OR • y. •� : k,, • MH DIATOMACEOUS FINE SAND OR 0 I CL SILTY SOILS 1_ IA 4, 20 -- 11' - SILTS OF MATERIAL IS AND LIQUID LIMIT INORGANIC CLAYS OF HIGH 11 6 . . • MORE THAN 50% SMALLER l HAN NO, CLAYS GREATER THAN 50 CH PLASTICITY,FAT CLAYS MH 8 OH 200 SIEVE SIZE A ,, _L._ . .4.. r p::;i// 10 -- T 1r1 O ° • , , // OH YTS • �,, , �� w Y: 1 0 PEAT,HUMUS,SWAMP SOILS WITH HIGHLY ORGANIC SOILS �: PT HIGH ORGANIC CONTENTS ww• wwvwv.`+ w` wrvM; • ■ 5 NOTES! I, DUAL SYMBOLS ARE USED TO INDICATE BORDERLINE CLASSIFICATIONS. • SAMPLES 2, WHEN SHOWN ON THE BORING LOGS, THE FOLLOWING TERMS ARE USED TO DESCRIBE THE CONSISTENCY OF COHESIVE SOILS AND THE RELATIVE COMPACTNESS OF COHESIONLESS SOILS, ® INDICATES UNDI5TUR9ED SAMPLE 3 ® WDICATES DISTURBED SAMPLE COHESIVE SOILS COHESIONLESS SOILS 0 INDICATES SAMPLING ATTEMPT WITH NO RECOVERY y s T INDICATES LENGTH OF CORING RUN • (APPROXIMATE SHEARING I STRENGTH IN XSF� • NOTE. VERY SOFT LESS THAN 125 VERY LOOSE THESE ARE USUALLY DEFINITIONS OF ANY ADDITIONAL DATA REGARDING SAMPLES ARE ' SOFT 025 TO 0,5 LOOSE . BASED ON AN EXA�gINA- MEDIUM STIFF 0,5 T01.0 MEDIUM DENSE TION OF SOIL SAMPLES, ENTERED ON THE FIRST LOG ON WHICH THE DATA APPEAR, • STIFF $0 TO 2,0 DENSE PENETRATION RESIST- VERY STIFF 2,0 TO 4,0 VERY DENSE ANCE, AND SOIL DENSITY HARD GREATER THAN 4,0 DATA i m to • • UNIFIED SOIL CLASSIFICATION pM. 4 • F + .. ZI 4 ,1 ,,w,—8 .. ,w. ■ Moore t``i �, ..�.,�, #1.. 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', ,' 2 „�nN;rti.w•SIP ,.+, ..'r r _ r., i� mss• .+�,t mx�w' »,.,�...m- .. ` . .-.-,.,. w..,Mn.,;,n gin �.. .- .r a {'• . 1 �� � .. , v . ,max -.nnpy y 1 .I, S.. f k ��) x :,Y,,., r ,.,. , ,1'.4 +•a Uyk,..,• , 11F � ,.{C�+ ,g412e!g , ..{ a�a+ ,f.. .. +,.p, .. ,_.:-r ,a �', w, { A 9 ,µ � � � •'� pt: Y " ',.° • '� .,,Pte+J;?.1»,n.(;-v+l'.,m�{.'r:,ld r.':..w r:a.. •y,k-. o r7�..M...._k , . '. . +':/ T..' .,. . `r, � . --. ,. P/•1+k1" M F' ,oR rr Z. w,,.�Y� ,uM i o, ..; w4 Y,t ,t, w ., a a. ,.. , 6 :.,; , d I w+f..d,r..S�. �a �aTL, z F THIS � F ..:::r w�._�_w=.�...u_ ,� , ,w�Y_,, , . .,, . _.,�a' �.••• r ..._. , ...,.,...... _._.,. .. _ wreea.11.r+inar• � a ..,...._..._�_. .,., a".. . , �' x�,, :, d ...,., .....,.. ........... ... rwrw`�W ... wr,r day.. �,'...�. ,'. ,.,._.... ....w..+.. 'y ilFf".. � , r .,•tl ,.. DRAWING S Lt-:S8 CLEAR f TI—IAN r.. ----- „.... __ r-- r-,.., , =9 •TH IS HOTZC {� ” T L .4,•b rI , a 1 1rvt r., , 5 TY OF THE ORIGINAL I _ a • ,.- • L., «y..,ayy � ,. 9 fi.s!41°4W V!M�! ,,,4 45.4 u.f,. ^y' ♦e.ee.:,MNnrY:+r M�'-.r11 •x!: r..0 +Y w' , d ,,.," n. .u. ,,:r..,:_ ..... 'w1% x p Mo-..w,:a..,aka :..r. Ji M • 'fir ,. __. 'I • a . -.RYK .«a ax. „w a • r:;..,u , 5. 4, .: �I w J k 4 , is 4111 fill, ..,,: . , I p, , to O T ` B 1111111 1111 � � � � 1 r r �p ,rro«' d ., q;If•-• , , � Wes,, r 1 ou�f tt Y .n..i......y. 'N ra, I. ,J ,.g Y•l,. ti.a;A, Z ' � + N .G: r y -,•t'�N+.—s- .-.,.+.:. -.+::.....,._..-,i 6,,.,..�r-,+,%,::.,. 1 n ..:4. '�'4R .... 'bl 1', L „1 Al • , 1 r . ttr IA . , „. , . . . I , 4A .u a . 1, '.{ , , . o + 1• r n' n '— , .�:_ - :'t , . . . . ,4. iw • . { ' i Dom f' r*". STAFF REPORT 1 k AGENDA 5.4/5.4A TIGARD PLANNING COMMISSION it AUGUST 26, 1981 7:30 p.m. {; FOWLER JUNIOR HIGH - LECTURE ROOM 10865 S.W. Walnut Street, Tigard No submission of additional material by applicant shall be made at the Public.. hearing unless the applicant is requested to do so. Should this occur, unrequested, the item will be tabled until the following hearing. •;t:, DOCKET: Zone Change Planned Development, ZCPD 24-81 (Losli Inc.) ,) Sensitive Lands Permit M 4-81. APPLICANT: Donald A & E. Howard Losli 8015 S.W. Hunziker Road Tigard, Oregon 97223 • OWNER: SAME • RE e for Cit Y of Ti and M-3 to M-3PD a Preliminar Preliminary Plan Review and a Sensitive Lands Permit. SITE LOCATION: 8015 S. T. Hunziker (Washington County Tax Map 2S1 1BD, Tax lot 300). PREVIOUS ACTION: On November 30, 1976, Tigard Design Review Board approved a 1 . loading dock, ramp and fencing to the industrial site on S.W. Hunziker Street. (File Number SDR 42-76). i ,'' FINDINGS OF FACT: 1. The site is designated as M-3 "Light Industrials' on Tigard Comprehensive { , Plan and zoned M-3. 2. There is one existing building. on the subject site, The suriounding land uses consist of S.W. Hunziker Street to the South, Park 217 to the North, and Industrial uses to the East, and West. t' " 3. Access to the site is provided off S.W. Hunziker which is a Major Collector with a Sixty (60°) foot right-of-way. 4 The subject site is lousee�°ermit forsa�.lvtheand usesoandaactvites 1. this requites special p proposed proposed by applicant. 5. Applicable policy from the NPO # 5 Plan is as follows: Policy Limit the atnoUnt of : ,-rcial development :. oc r in the .' dustria area, allowing only s,qme gro ` h of exsti g retail and servic-. cog' iercial in the tea. > 1 e i I' S l STAFF REPORT AGENDA 5.4/5.4A Page two 6. The proposed development in the Sensitive Land area does not comply with the Tigard Municipal Code, Sensitive Land Chapter 18.57, Sections 18.57.040 - 18.57.060 - 18.57.070. 7. Sewer is available to the site off S.W. }lunziker. Water is also available. 4 CONCLUSIONS: 1. The site is in a Sensitive Land area. 2. Both sewer and water are available to the subject site. STAFF RECONNENDATION: Staff recommends appprovalof Zone Change from M--3 to M-3 PD. : Staff recommends denial of Preliminary Plan and Sensitive Lands Permit. This decision is based upon Environmental Design and Open Space Plan 4' Policy 3s The City shall restrict alternation of natural drainageways unless it can be demonstrated that the benefits are greater than the detrimental effects. Other jurisdictions in the Fanno Creek Basin shall be encouraged to do the same. Policy 6: Require a site development report, eg, hydrology, soils, geology, for major projects in designated areas, and a statement reflecting methods to be used to minimize the runoff erosion impact of the development on the surrounding area and downstream properties. Applicant is requested to meet the following conditions prior to the General Plan Review, 1 The large warehouse (structure) be rLmoved from the site plan and only i the smaller addition to the existing structure with associated parking be shown on the site plan. r 2 A complete drainage plan with specific details regarding flood storage excavation shell be submitted to the Public Works Director Plans shall be approved by the Public Works Director prior to the RevieW of the General Plan. 3. The applicant shall apply for a Site :Design Review prior to commencement ;. of any work on the site 4. All the construction work in the floodplain shall be supervised by the. Public Works Director. ae6seeli,Ak4 ,z1,-„aee...",6_,,,,,,,,,,,ee,4, _.,40egetz,,,..,e-0-4-x,-/e-edie,-, ,..A4,440, 'ta ,,,,,,t,t. iet ,..te,a,e_a_ii„,4 0,00 ,0 _,,a,,,„6/disc,„. 00,aze/A _-0 -ix - ,/ „, 0,2) , .... , ...,,,i ,..-eta ,i - --goy ,_0.,,,,,,,,ie.,,,,,,,,,,, ei7,,,,,,,, ,,,,,,, , 7,,,,,,,,,m,,,,,, each._ Ag...,,,,,,e44...e„t„4_, ,,,,,,, is �• k „,.; 5. A s :� _s required in Planned Unit Development, the Applicant has to A dedicate the upper portion of his lot to the City for open space purposes. .r. 6. No Minor Land Partition sh��,11 be made in reference to this pro j ect unless formal application is made to the City of Tigard Planning Department and the Minor Land Partition is approved and recorded. 7. Grading and construction plans for all work in public rights-of-way and all other public improvements shall be prepared by a registered professional 1` engineer in accordance with City standards, and shall be submitted to the Public Works Department for review. 8. A metes and bounds legal description and map shall accompany a dedication of Public right-of-way, parks, open space or floodplain areas and shall be prepared by a registered en ineer,or land surveyorer. 31 P p y g� g� y 9. No Occupancy Permits shall be issued until all condition placed, upon , this development by the City of Tigard have been satisfied and inspections verifying this have been carried out by the appropriate department. 10. No changes will be made to approved plans or specifications unless formal application is made to the appropriate City department and changes are approved by that department. Application for changes will be made in writing and shall include applicable drawings. 11. All proposed utilities shall be placed underground. Street lighting installations shall be approved by the Public Works Department. 12. All street and parking areas shall be concrete or asphalt. All sidewalks shall be concrete. 1.3. No Building Permits shall be issued until the expiration of the twenty (20) day appeal period from the date of approval. 0 40010",7 .4 .41r......!L 1 Pi Prepared by S. Hamid Pishvaie Approved by Aldie Howard." Planning Intern Planting Director AO • x , r s __.r. a 4a..•,ss+♦>.Y-N'st;wse• .._ .... ..... .a ` . . STAFF REPORT AGENDA 5.4/5.4A fi TIGARD PLANNING COMMISSION AUGUST 26, 1981 - 7:30 p.m. l FOWLER JUNIOR HIGH -- LECTURE ROOM 10865 S.W. Walnut Street, Tigard ski tt i No submission of additional material by applicant shall be made at the Public nt is requested to do so. Should this occur, unrequested, i hearing unless the. applicant the following hearing.th.. item will be tabled until h g DOCKET: Zone Change Planned Development, ZCPD 24-81 (Losli Inc.) Sensitive Lands Permit M 4-81. r APPLICANT: Donald A & E. Howard Losli 8015 S.W. Hunziker Road <. f Tigard, Oregon 97223 r OWNER: SAME e. RaQUESTs Approval of a Zone Change for City of Tigard M-3 to M-3PD, a Preliminary. Plan Review and a Sensitive Lands Permit, S SITE LOCATION: 8015 S.W. Hunziker (Washington County Tax Map 2S1 1BD, Tax lot 300) PREVIOUS ACTION: On November 30, 1976, Tigard Design Review Board approved a fi i loading doc ,,. ramp and fe cing to the industrial site on .W. H nz er Street. le Number SDt 42-76). —otz 440.t,,,,,k44044,-11' r . 1. The site is designed as M-3 "Liht Industrial" on T'iga`d Comprehensive Plan and zoned M-3. 2. There is one existing building on the subject site. The surrounding land uses consist of S.W. Hunziker Street to the South, Park 217 to the North, and Industrial uses to the East and West. ? ; r 3. Access to the site is provided rovided off S.W. Hunziker which is a Major Collector with a Sixty foot right-of-way. 4. The subject site is located in a Sensitive Lands area (floodplain), tsor q uires special use permit for all the proposed uses and activities p hi p eq by applicant. S j , 5. Applica• e poi cy from the NPO # 5 Plan I as follows: " ii olicy 25 Limit the amount of commercial development to occur in the industrial area allowing . . r only growth rovth of e �stain g retail and service comers'.l in th / / ,. . i 1 ) STAFF REPORT AGENDA 5.4/5.4A • Page two 6. The proposed developmen in the Sensitive Land area does not comply with the Tigard Municipal Code, Sensitive Land Chapter 18.57, Sections 18.57.040 - 18.57.060 - 18.57.070. , 7. Sewer is available to the site off S.W. Hunziker. Water is also available. CONCLUSIONS: 1. The site is in a Sensitive Land area. 2. Both sewer and water are available to the subject site. STAFF RECOMMENDATION: Staff recommends 2.22.2/ of Zone Change from M-3 to M-3 PD. Staff recommends denial of Preliminary Plan and Sensitive Lands Permit. 4' This decision is based upon Environmental Design and Open Space Plan Policy 3: The City shall restrict alternation of natural drainageways unless it can be demonstrated that the benefits are greater than the detrimental effects. Other jurisdictions in the Fanno Creek Basin shall be encouraged to do the same. Policy 6: Require a site development report, eg. hydrology, soils, geology, for major projects in designated areas; and a statement reflecting methods i to be used to minimize the runoff erosion impact of the development on the surrounding area and downstream properties. Applicant is requested to meet the following conditions prior to the General Plan Review. The large warehouse (structure) be removed from the site plan and only the smaller addition to the existing structure with associated parking be shown on the site plan. 2. A complete drainage plan with specific details regarding flood store excavation shall be submitted to the Public Works Director. Plans shall be approved by the Public Works Director prior to the Review of the General Plan, The applicant shall apply for a Site Design Review prior to commencement of any work on the site. 4. All the construction work in the tioodplain shall be supervised by the Public Works Director. y ° • • . , • .to k\•••• t. • id /111. . t• •„ ,11 • I • .• • • , • P1 c lit, , ,//4 p. ne in t De 4 e o` * t i• A la•cant has to • 5. As i r qui•ed' in - P , � PPS di ee -. upper or ,o- of of ., the ty .. ••ses. 6. No Minor 1andPartition shall be made in reference to ,this project 0' unless formal applicat'ioftis made to the City of Tigard Planning Department and the Minor Land Partition is approved and recorded. 7. Grading and construction plans for all work in public rights-of-way and all other public improvements shall be prepared by a,.registered professional engineer in accordance with City standards, and shall be submitted to ' the Public Works Department for review. ° h , 8. A metes and bounds legal description and map shall accompany a dedication of Public right-of-way, parks, 'open space or floodplain areas and shall be prepared by a registered engineerror land surveyorer. 9. No Occupancy Permits shall be issued until all condition placed upon this development by the City of Tigard have been satisfied and inspections verifying this have been carried out by the appropriate department. 10. No changes will be made to approved plans or specifications unless formal application is made to the appropriate City department and changes are gym '. approved by that department. Application for changes will be made in writing and shall include applicable drawings. 11. All proposed utilities shall be *placed underground. Street lighting installations shall be approved by the Public Works Department. 12. Al r All street and parking areas shall. be concrete or asphalt. All sidewalks Q•;, shall be concrete. l3• Building shall be issued until the expiration of the twenty (20) day`yappeal:m period from the date of approval.4e.,,,55e6ce: Prepared by S. Hasid I' shva Approved by Aldie Howard Planning Intern Planning Director t . . ., ,. •• . ... ., . . : 4 , . . . ., . , . . . . .. . . , .,.:, ..., , ) '-7', a: • 4° . '' ,,,,............_ ....,4,40004.....-- 1•, . . • , . ••(. • . .. -• • '• ... ..-...,„ . ,. . . . • .. • •....-- o4 , .., .' affu„...... . d . , , . . . ' . ,.. . .•• '.. . . .• , . . . . . . , . •. . . 4 •r . ' I t .,11•. . Mo , .' .... . • 0 • .• . . . . . . . .• , . . , ....4.4.---- ... . • of'--..''' .,. .. . .. #000,1•64 .., . ..,, ,. . ,'. .. i4.4...,„,,-6 ,.. . 0 " ,(#0.41°°9..4 ."--'4 i i i t l, ,.• . . • • , 1 . t . . , . „ . . , , . . , , , • . . . , , . . ,,. , , • , I.' nom" v* ti4 August 14, 1981 Planning Commission r.; City of Tigard 12410 S. W. Main Street Tigard, Oregon 97223 Subject: Losli Inc. Job Number 281030 Preliminary Plan and General Development Plan and Program Dear Planning Commissioners: 4I Losli Inca is pleased to submit the accompanying documents for • your review and consideration as a Planned Development. This letter is to serve as our petition for an amendment of the current zoning map in accordance with Chapter 18. 56 of the Zoning Code and Application for Sensitive Lands Permit . This particular development includes light industrial uses, parking and truck service areas, and opens ace. Also included is utili - p • zation of those uses within the One Hundred Year Floodplain. I We appreciate your consideration in this matter and ask for your approval of our petition. Very truly yours, LOSLI INC. • Mr. Donald A. Los1i Owner DAL/mm Enclosures �tM .. . r ., .;.. r. -. .ms...µ. ... ..... .... 1 J ± r.rL01100 ; }.. ;Sheets muouramorammiuser , ..5TATION ., ,..0,,iritHt`etajoampet.1. A�RDfi C ald 0 b 61 S. •st;r }� -1 a �cr 0 1 , 6f 0 { • o 4s9, ' l 2-o "P:Aw1111M1111111 * . . . ' I i 0 14 bp i C` i t� 14 LL ay. a . ex • 14 tk IN X 24 l b - o x I' O5 ( x' bra _ t °all NE . ts = .iti , a Min . X16 • 11,1 VIIIIIIIMI1111111111111111. ,. L_ L I F IN=111111.11....1 C :1' Wow I-. . IIII MIII ®� ' -. • EMI IP INN" I • ' 1111.1111 E ii • a . .. . . • .. .. . .. wil . . . , , , . • ... i , 1 • 11.1.111111 . . , . aiiiiinii- ' .. „I n -.1. •• �'1-I,. :. 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IGItss12,06 0,00w . 240 0.01 (Gi.sro> i 1-bo Y.,/t PG' ' 64ST siDa 15i,s5, 44,E, Ins (9.• 15143 I 0,642, toton '1,40 is/ 152.11 crF °‘5-5' c‘. ; Qt: 170 ex's I 1. -T141,74,.Rxlstib4 c,P. 714 0" , i PAcLie.‘P LP t■trr e4147"-rat A, 0641-101.; AS OC.3.4 r-i- 4.4.i - .../ ,. . . „ . • t ED tiS . i 1 . . 1 , * ir' , r r; r ®Y�G L, -C.- -OATE'2'"I�7"`iI .. N `Twice°( . , ._1�.�-.1..... >..� y NIACKENZdE ENGINEERING INCORPORATED CHKID. ®Y DATE - . CONSULTING ENGINEERS JOB#..--212? ?..--., .. 4- —n ot,1 I A ' V � 1- }r-} 63 F Lax ' n f U-1-4 R 151110 ' 0169 j d, 4 1 1151161 '2.16 io,00008 WC ! 0102.. 151,S1 64go u50 15 059 320 IFS N ! F I I I SST 'I©E '. 151.6 1.11,5 k)5* + aryl. I S1 2 0,i6S 1000c011, 2 O j a.i.) 151,5-9 ��, � , 3 I 0S I51,6o V1'D,O 6 , I5l'tz 636 0,5d C ,71 ii6I,S1 ,1 O7UoSS O ,a)3 151.-13 ,000 4 z 0 ; • • X10 GF5 '15115 l�lb D,�o ;:b��l i�l ��, � (�")D �� I � `G,I,t"" t � `,.�J�"7 5 • u sc S r x 1 I I,"1' V �. . ia.:.. a--� - ate. .�. _ -- �...»'.'�"'"'�"=°°..`�.a'•�."� r .<r 4 . 0 11+0o 152x) 51,3. i 0,63 E I Oboe 8 2-/o Ms IS .. . K '''.z ail ' t 1q4 5° '1 S3I0 1401 ; hit/2. 0,07,.. IG' .0"). ie),B(z 10.0621) '755D (tO 1 S.1.00 . r. 37o O F . w I USE, 1510,c__ 1 I . I 1 , t � r 0 M ,, , I 1 1 I M , 4 i .e t R � Y 7 9 w r • k t I , t .' A I • 4 V ♦ ,_, • v 4 DATE f F , v, IACKENZIE ENGINEENIN� NCONPO ATEU C1^!KD, BY 1� ON3U..TING �NGIREE h i. , d®D#—.�.� CJ NO 6 1(.c., i. . \ • I.„ ,, . 1 • • . 8 \ . . \ , .. o 1,i , • S. r r.. 1 I ..• .. r•• �" 1 li • _ , /. .,. 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SY-- DATE- CONSULTING ENGINEERS • J01511.,...„21:21,Zila._ SHT NO. or 16 OY., Cc S cecticOS- V E H I tJATt C7IJ OF '1.1,C,r) STcK2A6 E 1AL.403/4-QCE , Str-k.0 H164-i5ST 100 V(i, VArriot-.1 co-) c...11-E lc 15 ,001 SeT 1-4PJECT '', • . Pi 1.11Sid .t..00-12, E-17.-vA-Tfal-he 15 4,' o (PC-f2 ci-Ni OP Ticpprer) su&D,../IscorQ r:q0 Roan 1":14'V eccr - .... .;),.. r ctiE. L. i zoo 1 1.0 1 zo Bo 1.40 • .. , too siz Pt-o(..,0 sf -",-; * 1 .Z• , • • .44 'I. • "T 4 f 9 ' 15o ( .7.110 -11'( 7-.pf1 ) Ra. 1-4,'i s-rrt Ipprmt; .c.,-rirt'ATet)) , 11-5c) ........ .- - , ■ \''',,,,,e, .. , AL, 2 RillyPP) 1 i so , .., • i 4 e• ............., • 41-,, o •tiou‘ I S 4 • ■ 4 . .4. .4 O., A V 4 a ... I.44 4 ' --L--- • ........ • ...._....... ,,, . ....... „ . .. - .....• I 50 , . ) 14'22 . : r■ I . i •, ....., a • t . 7.. a w_ w P.U,1. DATE ,:. .: 1 1 S.L1 E:=2. �� 5 RENzIE ENGINEERING INCANPOMMTER CF KK® ItV ®A►TI& CONSULT1NU ENGINEERS I Q3C9 1 G1 911... ...,..,.,,,,......L.....-.-- . • SHEET NO,., ,, g _o r 1.00 IGp I/O 60 HO ILI. 54 0 �d6 pi J P1.,012. i 5�,e. r 151,9 PAM 6110, --- 152_ I F $tgAj. PISU'C4 - -----a y _ PILL ZE( L, f p al-rcH , — L/ L .. . 6,„5-nzIppoo C5s-mAT ) 14-a 104 3 \-\c, / . . .._ .. ... . \ 64 ,, 100`la, Pt,oatp 1` 157.,0 i�z ; /x . r-t------ \. ISO \\. A I s'� F-t'" ( P1r') .,...._ t 6o • n• mitt- , 9 .s• II •. ,r• r -r. ....:...........:..._'._..mow.-......�...::._ ._ ..:........,._... 0Y P C2.` DATi 1.�+.. : L 1.,t2C"! .�1�d .S- ' MK�Ii�'IE8G9MEERtNC M4CRI�OiI►�'f0 co�a�ca. WY- ta�►vk . • CONSULTIING ENGINEEPtS ■ sNEct NO,. 9 oir aZ ? F �'��' F► Fwo`a. 15 ,5 , ,,,01',), , 'W/' / .. .. a ... —... .. A lag`t(z,F—L r G*'51, alb• .• .. -� 15119 _• r- 15 ���----' Y r • �C' aux,► . FILL. REOIC>, I .�. . 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ILfrio--1- tir .444: . . , i ji . i:,., l' ii". j:f 1 e0„,451,..-..ri..&,,,,t-......111....--._. t'''', • . , ....42.44,14„."...(72ate,"7„.' °6.tr, .'et( ii6j1,44.,' %..,b(7Z7*""-%-...""t C...ka...."1".4"... , '&r...., ../6737.' f��C% ' ,...lit,M-■de 6,(11,4fertAAL.A.A.4.1,‘-%--1 t.J7‘.4., l 00 c..1,,a44...0\„,) . ...„,... ..„ 4,,,...t.A.„„t..„, : 4freirlt. , r .:;..„„e/t7C71-wri.,45,,,,,,..... . -) J .. 1 a 1 1 ,EE , j 1. 1 . , • r 1 t 4:, . „, ,,, I:. : ... i ., 1: ' 1,,,.- , . ., Arilliallfal r ; • ' — -... '°',7•Peonar.-- — -- — -— - — — --------- ,——-- -- . . : .„ . . , ' - -- - ''•• SENraTIVE LANDS PERMIT , ( t, c -k( REQU EST tl . . t ;, APPLICATION FILE FEE REC'D. Tigard Planning Commission 639-4171 RECEIPT # . 0. 12420 S.W. Main St. , Tigard, Oregon 97223 DATE REC 'D. /a!' BY /4 ,..”,....fri . . .• . . .. , ., . PLEASE PRINT IN INK OR TYPE , .. Action Requested Site Developmeat Within 100 Year Floodelain and PD Desi:nations. 4' L . Applicant' s Name Donald A. and E. Howard Losli Phone .684-0750 Applicant' s Address 8015 S. W. Hunziker Rd. Tigard _ Or. 97223 . . (Street) (City) (State) (Zip) . . Owner' s Name same 1..... ■ Phone 684-0750_ S 1/...*.*1-1V...*..■.•••■••.......I.....IM..........1 ..*.*••■ . Ow-ne2.-° s Address 8015 S. W. Hunziker Rd T1 ard Or. 97223 *i Cs-EFEFET City F-1-S-CaTeT—Tfilp) App, icant is : Owner X Contract Purchased Developer Agent : , Other ,............_.... Owner Recognition of Application ,,,..1 .7„.„ 0 ,..,,,,,,,_,eu, / 64, „.....0 ,:, ... 1 vir 1 ,\ , • signature of own -te -7---s C Person responsible for application Philip R. McCurly___________________1. • 0690 S. W.- Bancroft Steet Portland Or. 97201 't,. .. -,. .', 16 if i I•,..'' (Street) Retgistered Engineer' s Name -_Dave Larson (City) (State) (Zip , --..).----. one2249560f tI li Regi8Lered Engineer,i O f ice Mackenzie/Saito & Associate8 PC Phone 224-9561 Registered Engineer' s AddreSs 0690 S, 'VII, Bancroft St. Pqrtland Or 972Cr , „ I . (Street) - (City) (state) (z? . . r 1.50RERrllY' INVOLVV40: ill ax Map 4 2S-1-1BD Tak Lot (s) 300 , , ; a • . _, ..i , 1 ! 5 Addires 8015 S. W, Hunziker Road Area Od 3 ka,,:i r 01........................... ....*..........M.■■■■■•■.........000.0001.■................... ...1•1..........•1.10.*•••■••■■■■■*V.........4 sting Building8 (# and type ) One Tilt-LIE Concrete Vh1. ) Current 2'oning 1\43 current Use Losli Inc, Warehouse aticit . , Applicahes Appi jc aht i i...., Light Manufacturing it v), 1 Prbposed zoning Me-pp Proposed Use Warehouse and Light t 4 Manufactu4'ing .ti 1 / , ■ , , t . .. . .., SENSITIVE LANDS PERMIT ._ . . C c, REQUEST l' * APPLICATION FILE # FEE REC'D. ---- ---I . Tigard Planning Commission 639-4171 RECEIPT 12420 S.W. Main St. , Tigard, Oregon 97223 DATE RECD. . BY . . PLEASE PRINT IN INK OR TYPE Action Requested Site Development Within 100 Yea,LEkLocjpjpl.rlAnd PD Designations. .., Appii cant ' s Name Donald A. and E. Howard Losli Phone 684 0750 .'" I Applicant' s Address 8015 S. W. Hunziker Rd. Tigard Or. 97223 ,. . (Street) (c3.. ) (State) (Zip) i 1 Owner ' s Name same Phone 684-0750 1. Owner' s Address 8015 S. W. Hunziker Rd Tigard Or. 97223 r-s-Eree --- City StafeT----TXT157-7 4 LA Applicant is Owner, X Contract Purchased . Developer Agent On.................. ..................* Other 1. . ,, . Owner Recognition of Application: 1 i a , , I signature of owner(s,) , . q Person responsible for application Enili21. McgTay_ 0690 S. W. Bancroft Steet Portland Or. 97201 . ,,, ........■*,.........*,.......**............**,.........■,... f a .- -fl717(iar --. (City) (State) (Zip) , Registered Engineer' s Name Dave Larson Phone224-9560 ' g ., Regis bered Engineer t s office Mackenzie/Saito & Associates PC Phone 224-9560 li ----- Registered Engineer' s Address 06905. W. Bancroft St. Portland Or 97201 1 , (Street) (City) (State) (Zi- i ,'. si ----- ii _ PROPERTY INVOLVED: Tax MaP 4 2S-1-1BD Tax Lot (s) 1 300 • . . t 1 • I Address 8015 se we Hunziker Road...... Area 5. 3 (ac • k.......- .. Existing Buildings (4 and type ) 0IntliltgytglaCretelni .........................................................ii 1 . . Current Zoning Ma Current tiri,e LOgli Inc. Warehouse and APPlicant' s tA.pplicani8 Light Manufacturing . i Proposed ZOning DA8-mi Pltopo8CA,d Use Warehouse and Lizht 1 Manufacturing t 1. I . ' • rcxy — 4 „,„ t SENSITIVE LANDS PERMIT REQUEST Fill Type of fill:Selected native soil and innorted fill C yar S 1 to II' C11 16-75Y-M—excavarfUrf,— Cubic yards of fill: net increase in fla_ociplainstoragt. Area of site to be occupied by fill: 79, 800 8q. ft. ,. . (Sq.Ft. (Fill) /Sq.Ft. (Site)) x 100 = 35 % of site to bl , filled. Distance of fill from stream' s edge: Horizontal Distance 20 Ft r' vertical Drop: 4. 0' ± Ft Type of bank to be installed: Buildinafoundation wall Net change in storage capacity of floodplain resulting from fill + 162 CU.Yds. increase in storage capacity) i Will the ill increase the flood crest or modify the flow of floodwater' , Yes No XX If so, what will the quantitative See rep ?r effects be? (ggkoixixxamikier.tx,exxxxxxpiaxmtAxx0 . Structures Existing structure (s) in floodplain: (Yes) Losli Height 20' + Ft. Width 125?"0" Ft. Distance from stream' s edge: Horizontal Distance 15-20' Ft. Vertical Drop 0. 6' Ft. Proposed structure (s) in floodplain Height 20' to 30 Ft. Width 100' Ft. Distance from stream' s edge: Horizontal Distance 20 Ft. Vertical Drop 4, 0 + Ft, •" ' Distance between existing and proposed structure (nearest Point) 801 Ft, (New addition to new bldg. ) Will the structure increase the flood crest or modify the flow of flood waters? Yes No X if SO, what will the quantitative effects be? (Attach a sheet for exPlanation) . Will the proposed StrUCtUre be designed to withstand the destruct effects of a flood WithoUt significant damage? (Attach a sheet t eXplain specifics) . Yes • • r. • , . vx .,,.n.MX�w n.p•.:4 nM�rr.n+w+i- ..�+�•.,..:.w.,-.....+..ti..•.�,......-;J1+:-.rn..,.�...i«-.�.•Cl.e.,................�..-:..^r—:....-...�..A.....�..��,..�.:..,.....,..-+..,.-n..-HI.-.e..,...,,.,.,.:•:+..-._.....-..«.:....�,-.....-.....,�:.:. .._.'._:..-. :: ....._...- .. ......�. ,a...•.. .. ..,,.-........ '),:. � ... - yYld�ui.x. •x PAGE 3 • SENSITIVE LANDS PERmIT REQUEST ■ Storage What type of materials are to be stored? No open a.,r storage g yP _ { Volume/quantity of material (s) N/A i{,. Distance of storage from stream's edge: Horizontal :/A, Ftr Vertical Drop Distance of storage From nearest building N/A-- Ft. i.: Will the material be anchored to prevent movement in the even of a ' • Flood? Yes How? No Why Not? (Attach a sheet fear explanation) Type of screenig for storage N/r ,.^ te • YP - — F. ,• to k _ - - aL OF 111674' WASHINGTON COUNTY,OREGON NOTICE OF FINAL DECISION 1 The final decision was filed by Hearings Officer , • Concerning M 4-81 on August 31L_1282 Case Number De-de 2. Name of Owner: Donald A. & B. Howard Losli 3. Name of Applicant: Same as above Address 8015 S.W. Hunziker Road City Tigard State Oregon 4. Location of Property: k Address 8015 S.W. Hunziler Road Legal Description 2S1 1BD lot 300 5 Nature of Application: Sensitive lands permit to include channel improvements and cut and fill within the floodplain for future development of a building, landscaping and open spaces. -• 6. Action: Approval as requested rirl Approval with conditions • F1 Denial 7. Notice: *Notice was published in the newspaper & was mailed to: • • The applicant & owners 1111 Owners of record within the required distance The affected Neighborhood Planning Urganization [:111 Affected governmental agencies If there are questions regarding the names of the persons Or agencies Who received notice, this information is available at the Planning Department. 8, FiOal Decisioq! The adopted findings of fact, decision, and stateMent of condition can be obtained from the Planning Director) City of Tigard, City Hall, 12755 SW Ash, P,O, Box 23397, Tigard, Oregon 97225. In the case of a decision on an application for a variance, the applicant must acknowledge this form and retUrn it to the City of Tigard, Planning a , DireCtoP, before atiy building permits will be issued or engineering approval given, Signature of Applicant or Applicant's Agent Date M k' • • its k 9 Appeal: An appeal r---F has been filed has not been filed. Notes Any party to the decision may appeal this decision. 10: Questions If 7nu have any questions, please call. the City of Tigard Planning Department, 639-4171. • T • • f • rk •?r. 4 1 , • 7 ,, �. r r n . GENERAL NOTES ' 1 Contractor to verify and confirm all dimensions and conditions . Notify Architect of any discrepancies prior to start of work. 2. Strip existing soil to a depth of 4" to 6"•. Stripped material ,• is not suitable for engineered fill . Stripped material shall be stockpiled for landscaping and surchhrge purposes or removed • from the site. 3 . The upper 2 ' to 3 ' of existing soil is black clayey silt, to be excavated along the west side of the proposed future building as p engineered See plans for surcharge shown and replaced with en sneered fill 5 and alternate excavation and fill at other areas of the building pad . 4. Engineered fill shall consist of granular material having a nominal maximum s ize of 4" with not more than 5% pzssing a No . 4 sieve passing the No . 200 sieve. 5 . Engineered fill shall be installed in amaximum 8" lifts , compacted to at least 92% of maximum dry density obtainable by the modified AASHTO method (designation %-180) . 6. Rip-rap shall be 6" minus fragmented rock approved by the Engineer . 7 . All earthwork operations at the site to be inspected by the Soils ,9 Engineer. • ., 8. . Prior to start of the work this Contractor shall review the soils as pre pared by Dames & Moore, 1983 and as report dated �1ur�e 27 , supplemented on 8/3/83, and shall be considered as part of these general notes. 9. Contractor shall reseed all areas of work Outside of the stream to native grasses as ground cover until Future construction is completed . , ,. 10 Surcharge to be removed after approval of the Soils Engineer and at the direction of the Owner. Reseed as required. • d• •1 • „n„ ti°� xi r ., Hr„• ...t ,< u. r.x,A*z!kRYCCk @t„SS,r •�r,,.a. ... - ... . - -• -- -.7 - ,. . _ [.,....!..! ___ _ !!! , .; : . ... . .. ■. - . . . . . . _ _ .! . - . . „.. . , . ..... . . : , _. _ . ..,_ ,- 1 , ' • —.4 .., t ,- '1 t... , ,, i'tr• 't t 1 tili- t 't -..., . i , • 1 -...: = , c 4 , I 1 I 1\ _ ....„ . -,- _ 'I \(\,‘ [ , I , . . • -, • 1 , 1 - I J ti4k . . [ . \ i t _ .. i. , . ,a 1 , 1 / • . __ .. • ,t -..-;. -4 ., ••• . • , • , . i .•-•i• -•t , . (\\ , , } . . ,.. , .. . ... . . 1 , . , :... . y , t . , 1 .... . .. „„4.... . . • _ _ __ . . . . . _ „ . . . . . _ , . _ . . . ....... .. . . ... . . . . _. . „_ : , . • •.. .... . _ ., ___ . .., ,... _ , . .. . . _ __ __ • .. . . _ .... _ _ ..„.. .. •.... . .. • . .• .., _ _ . .. . .. , . . . -- , . fl- . .(a, s'1,,_,,,,,,,, ,Zgic_, .4' • - , , PLANNED DEVELOPMENT FILE CONTENT ; , IC .4. . 4.44.4...........04.b... Pp 17 ' ,•4,, I , Li LErT SIDE RIGHT SIDE __ _______.--_,_-___---..._ ., V,/Assessor' s Map 4aps/Preliminary Plat ---- . I. . Notification Legal Oescription/Doed . . • / Surrounding Property Notice Letter of Authorization , .4.44......... ei Affidavit Milin g /Copies of Correspondence with Applicant • t Agency/NPO Notice Public Input ---- . • / Affidavit of Publication Agency/NPO Comments . . • . /Articles/Notices from TT Stff a . _.-._ . . . . . . .* Application/Narrative / Minutes of Meetings . . ---__ . -.--, ,,,,' , , / v Final Action Notice Planning Commission-Date . ......... City Council-Dte a . ................ . Resolution No, ,,. Dale .- . Ordinance No Date 4' Correspondence After Approval ........-- SUMMARY , .... Approved a I ootit t '6t3 ' No. of Lots .1 . / i . f as , • 4u, 44 No No o Ph se ,itillooP/6"‘:/)-61-" '41`"--(•"/ /4:61A141/1 . Spec ia I, Se t-,back s ' . Plat Recording , Additional Phases Rect.'ded ..,_ __________ ,L• . (Date) (3oo0Tage No.) , ., bat ) (book/Oago (Jo.) • ' ki.,/bj t(0616 ) a - . ,• T • . . I« TABLE 4.2 i. HYDRAULIC STRUCTURE INVENTORY CULVERT CHARACTERISTICS EXISTING CAPACITY - CONTRIBUTING HYMO BRIDGE HEAD': -; STRUCTURE DRAINAGE AREA STRUCTURE CATCHMENT SIZE LENGTH SLOPE OPENING WATER FLOW DATA. HYDRAULIC NUMBER. (a=acres;m':=mil) CLASSIFICATION NO (inches): MATERIAL1 (ft). (ft/ft), (ft2)' (ft) (cfs): SOURCE2 CONDITION3 100: 470 (a) Minor 312 2-42 RCP 69 0.011 6.5 240 ACPA u 200 590 (a) Minor 312 30,35 RCP 54,42` 0.001 4.5 104 ACPA u;u 300 190 (a) Minor 312 2-24 RCP° 62 0.024 6.5 74 ACPA I 400= 1.3 (in) Major 312 42 6.0• 260 PCA G.f - 500 TA (ml Major 312 54 CM? 40 0.012 7.0 150 AISI o,1. 600= 2.4-: (m)? Major 312. 84 x 72 RCB 32 75 260 COE 700 190 (a). Minor. 313 - ____ -_-__----Blocked Culvert. . 800; 260 (a); Minor 313 30 CMP' 40 - 0.010 6.0 35 AISI 0,1/1.0 ._ -' N. 900, 461: (a) Minor. 314 48 RCP` 36 0.022 6.5 135 ACPA. i 1000 538 (a) Minor 314 72 CMP 40 0.005 8.0 205 AISI 0.1 s• 1100 550= (a) Minor 314 60 CMP` 44 0.016; - 9.0 205 AISI . o,f 1200 2.8 (m)= Major 315 60 CMP' 45 0.013 9.0 410 COE ---- 1300 2.9'- (m) Major 315 2-60 x 60 RCB 30 0.005 6.0 840 COE ---- 1400 3.0 (m) Major 315 2-60 x 60- RCB 35 0.005 6.0 1.090: COE 1500 35 (m) Major 315 2-108 x 144 RCB 250 0.005 10.0 >1;200 COE � F 1600` 256 (a) Minor. 315 2-24 RCP 40 0.018 5.0 66 ACPA i • 1700 4.0 4'.0 (m); Major 315 240 8.5 1,020 COE --- 1800 582! (a) Minor 317 36 RCP' 30 0.006 7.0 86 ACPA 0,1 1000; 3.9 (m) Major 319 71.5 7.5 530 COE - &_< - 2000 4.0- (m) Major 321 66 RCP 25 0.005 7.5 160 COE - �. 2100: 42 (m) Major 321 48 x 60 RCP- 25 0.010 6.0 470 COE -- 2200 55 (m) Major 323 2-66 CM► 40 0.008 9.0 980 COE -- 2300 85 (a) Minor 325 18 CMP 57 0.022 8.3 17 AISI o,I • 24001 325 (a) Minor 309 54, CM? 60 0.010 5.0 80 AISI o, 2500 125 (a) Minor 327 36;.24 CM? 102,102' 0.030 15.0 138 AISI opt;o,x11.0 - 2600 413 (a) Minor 327 48 CMP 100 0.018 3.0 130 AISI o,f . 2700 520 (a) Minor 327 48 CM? 70 0.008 15.0 190 AISI o,1' 2800 88 (a) Minor 329 30 RCP 90 0.016 55 52 ACPA I I_ 2900 105 (a)" Minor 329 30 CMP' 105 0.015 5.0 35 AISI o,f 3000 373 (a) Minor 331 30 CMP 36 0.019 5.0 36. AISI o,1 4 - . >' 3100 84 (a)`, Minor 331 24 CM? 210 0.020 6.5 26 AISI o 3200 1.4`. (m) Major 331 2-54 CM? 120 0.005 7.5 240 AISI o,f 3300 12 (m); Major 331 120 x72 RCB 120 0.005 8.0 520 PCA o,f 3410 1.5 On) Major 331' 72.x72_'' CON.ARCH 50 0.005 11.0 290- PCA o,f' 3420= 1.5 (m);, Major `3311- 95 CM? 70 0.005, 9.0 290 AISI 0,f 3500`- 202 (a) Minor 332 30 CM? 300 0.036 25.0. 70 ALAI • o,f 3600; 2.1 (m) Major 333 84 x 60 CMP' 40 0.001 7.6 150 AISI 0,1 3700 22 (m)? Major 333 96' CM? 42 0.043 6.5 150 AISI o,s/ 3800- 2.2 (m)_ Major 333 72 x60 CMP BS 0.005 8.3 150 AISI o,s/1.0 3900 22 (m)' Major 333 48x60 RCB 100 0.005 7.3 150 PCA a,f 1CMP,corrugated metal piper RCP,reinforced concrete pipe„RCB,reinforced concrete box. ` 2COE Corpsof Engineers hydraullerodel;ACPA,American Concrete Pipe Association;AISI,American Iron and Steel Institute;PCA,Portland Camera Association. 3i==into tcontrol;o,=outlet°control;f=flowing;full;:ll.0=outlet submerged 1.afz;u==outlet unsubmargsd. , 1. r ,.- .. - r �.1,,,,, - s ©� . "- CHANNEL BANK PROTECTION i 4_:_ F ;4 • ~' • 6,0i...00 General Channel bank protection is necessery.when natural bank material is unstable as discussed .in Section . Riprap of rock, rubble m'asonry' ,,,,,• with grout, sacked concrete, and broken concrete s l a,b are most commonly used to protect embankment Or channel slopes Of unstable material . w.o2,00 ck Rips Rock riprap is either light loose or heavy loose riprap Either • i shoul d'be pl aced'on a one°-foot thick filter material graded from sand .. .•' ,, to 6 inch gravel to protect the original bank material from scour or sloughing, The filter should be graded in layers from fine to coars out to the' riprap. Riprap thickness should' be 2 feet thick for light loose and 3 ' feet thick for heavy l Oose r i p rap The >toe of the r i prap • should be placed below the channel bed a depth equal to the thickness - j. of the riprap. 0 i s(---\ 'N.: •f ' ' (N(*)\U/1 r\N'i ' . I r P= /00 gr flood dep/ . , \J--(-,-,), „ . (z1 .ir. ie i delil/7; /A 1 / o T //er Y .� .:. 'CM L. *: i • • �r r2picaf hbth l %pteip rig, 6.1 6 ■ h , • -.:..:._..,.,_.., .. ._... ._:..._.._...._ .. _ .. ..._: _ _.:_... ._.. . _.., aim .. _. __._. A ' n , r INTRODUCTION . The following narrative will provide brief responses to the Tigard Zoning Ordinance criteria for a sensitive lands permit. The pro- posal will include channel improvement, and cut and fill within the floodplain, for future development of a building, landscaping and open space. In addition, these verbal statements addressing Section 18 . 57 (Sensitive Lands) and Part II (a) 4 of the floodplain application, a site plan has been prepared and accompanies the application. Also, complete engineering calculations to support the verbal discussion have been submitted to the City Engineer. It should be noted that similar floodplain development has occurred in the adjacent Park 217 and Main Street Shopping Center, both in Tigard. The subject pro- , posal includes general supportive conclusions gained from these pre- vious floodplain development approvals. Upon approval of this application by Tigard, an application will be made to the Oregon State Division of Lands for appropriate permits. A. The 13 "oposal _will no_t reduce the caJac t of the .floodplain area or raise either the f lood surface elevations or flow rates: The proposal maintains the floodplain capacity in two ways: 1. The flood rate is maintained by reducing the wetted perimeter of the channel which reduces flow resistence andiAfriction, and increases the hydraulic efficiency of the channel. The channel flow rate is ultimately controlled by the constriction imposed on the channel at Hunziker Road. This natural meter remains un changed by this proposal. 2. The storage volume of the floodplain will be maintained by creating a reservoir in the upstream area of the development which will fill at times of high water. '`. This reservoir combined with the channel storage ex- ceeds the storage now available in the 100 year flood- • plain. The capacity of the drainage system has been calculated for both existing conditions and after construction. The calcula- ta,ons demonstrate that development will actually lower the `.; 100 year flood level at the upstream property line by approxi'- mately 0.7 ° or 9" t (see data sheet) . 11 4 pl41 A VVV .1 """' "'",•'7.. .....--- --- - , 4 ., • . * 4, r ,0, 'I (i. B. 112112Er.opiosal will ngtadversey. affect the flow direction on ,..1.14 '1 „,..--°. LIPstream °r dowaLF.29. 211aatELi91i .1.i.fle ., ... " ... ..+,,...,i)fl .1/V)tee 4'1'4' The proposal will improve the channel efficiency in its na uri- al position, therefore, the flow direction will remain un- changed through all reaches .of the development. , 1 1,.lA 4 ,* e ..,' i 41' 6 0,,, 0 0 4 0 ) 6iv ' ...-' c-/ (','... :\ ' 4-' ,,,:1-:,%-1,42,0„ M i l t 6.1 ,,,,, , z, ,,, r„., Cl, Itilya.nIderyfore!eet.121tktzardsLty- and wellareiapdh212 ±11217.2iill be mitigated: , The proposal will not create or increase any hazard to the public health, safety and general welfare since the basic . drainage way character will not change. In most cases, a drainage way, such as is being considered is not generally viewed as being hazardous, in that, - its natural flow and ' flood rise occur slowly enough to pose no particular danger. Fill boundaries of the proposed development will be established close to those occurring naturally along the stream and will have sufficiently gentle slopes to allow one to walk to them. A low stream flow velocity will be Mc„intained to mitigate any danger due to fast moving water. The change in velocity after construction will be less than 0.20 t./ sec. , D. Erosion Control: . Erosion is primarily controlled by maintaining existing stream velocity (approximately 1 ft./sectlell below the level which , . , will cause erosion of t.hq°1--a€.17i2e sofrD(Approxima.tely 2-3 ft./sec. ) . Disturbed areas will be rCs'agd-e-d Vi-Eri native grasses to re- , t. establish a natural ground cover, and landscaping will be add- / ed as depicted on the site plan. '-- J1 * ) li. ' . ,i- '14- e - - p , . , / 4/ , it 11 7 /144 c/j, ttaYi 1 r l' Li, # ,1,1 414 ,,.04" L61 yr1,964,1). " ''' 4'''' / e / ( t 4 . * I GENERAL DATA SHEET Backwater Curve 100 Year Flow Rate - 285 cfs, based on CH2M Hill 100 year flow at Fanno Creek of 317 cfs and estimating that 90% of the drainage basin is above Hunziker Road. Mannings 'n' = 0.030 - 0.080 Velocity Coeff = 1.36 Control PT Elevation - Downstream control assumed at Hunziker Road curb EL = 150. 8 ' • •, 100 Year Flood Profile Elevations Before & After Construction Elevation Elevation Elevation Section* Before Const. After Const. Change 0 (Hunziker 151.60 151.60 0 1 151. 85 151. 90 +0.05' 2 152.10 152.16 +0. 06 ' 3 153.10 152. 40 -0.70 ' *See accompanying °Location Map" These results clearly show that there is no significant effect on the floodplain profile due to the proposed ConStruction; the only effect i8 a slight increaSe at Sections 1 and 2, and a lowering of 0.70 ft. at section 3 , the latter due to the increased hydraulic efficiency of the and excavation. 1 4 • • I EXHIBIT "B" , 541.060 ct WATER LAWS • otherwise, Damage resulting from extraordi 541.080 Suits involving water rights, , r X4.4 •". nary and unforeseen action of the elements, or parties; decree as to priorities. In any suit attributable in whole or in part to the wrong- commenced for the protection of rights to ful interference of another person of irriga water acquired under the provisions of the Act " ` improvement or water of 1891, pages 52 to 60, Oregon Laves 1891, tion, control' district iect organized pursuant uant to ORS the plaintiff may make any or all persons who k chapter 545, 547, 552, 553 or 554 with the have diverted water from the same stream or ?;.,;; .' irrigation, drainage, water su l , water source parties to the suit, and the court may g g > pp Y P Y control or flood control works, which may not in one decree determine the relative priorities ' a' • be known to the person or irrigation, drain- and rights of all parties to the suit, Any per- •age, water improvement or water control son claiming a right on the stream or source, f, district organized pursuant to ORS chapter not made a party to the suit, may become such "'r time as would enable the person or •length of on application to the court, when it is made to " 545, 547, 552 553 or 554 for such gt pp ' , ` ' p r irrigation, appear that he is interested in the result, and '' a have his right determined.The court may district organized pursuant to ORS chapter ter t may ` any y drainage,water improvement or water contr�� rna ` ` g P s a O p at any stage, on its own motion, require tiny 545, 547, 552, 553 or 554 by the exercise of persons having or claiming rights to water on reasonable efforts to remedy the same, shall the stream or source, to be brought in and not be recovered a ainst the erson or irri a- made arties, when it a ears that a corn lete ,, g person p appears complete ,4; .— , . . . MISCELLANEOUS PRO, 3XONS 541.055 ,AK...!iir, ■ WATER COMPANIES ditches, canals, flumes, distributing ditches, , e,-•••• '•',, , • ORGANIZED UNDER 1891 ACT and feeders of any corporation appropriating ... .. ,,. ". . . ... water under the provisions of the Act of 1891, 541,010 Furnishing of water for cer- across all lands belonging to the State of , • , tarn sale, utility; rates; amendment of law. (1) The granted. - use of the water of the lakes and running . strea.ms of Oregon, for general rental, sale or 541.040 Headgate; mode of construe- tion. Every corporation having constructed a • . .1 distribution, for purposes of irrigation, and i supplying water for household and domestic ditch, canal or flume under the provisions of . consumption, and watering livestock upon dry the Act of 1891, pages 52 to 60, Oregon Laws . I lands of the state, is a public use, and the 1891, shall erect and keep in good repair a right to collect rates or compensation for such headgate at the head of its ditch, canal or ',.. use of water is a franchise. A use shall be flume, which, together with the necessary •. deemed general within the purview of this embankments, shall be of sufficient height • section when the water appropriated is sup- and strength to control the water at all ordi ' plied to all persons whose lands lie adjacent to nary stages, The framework of the headgate or within reach of the line of the ditch, canal shall he of timber not less than four inches or flume ill which the water is conveyed,with square, and the bottom, sides and gate shall • ' be of plank not less than two inches in thick- out discrimination other than priority of con- ness, tract, upon payment of charges therefor, as long as there may be water to supply. 541.050 Leakage or overflow; Habil& , ., (2) Rates for the uses of water mentioned tY; exception. Every corporation having .3.• • in this section may'Lc fixed by the Legislative constructed a ditch, canal, flume or reservoir . , Assembly or by such officer as may be given under the provisions of the Act of 1891, pages that authority by the Legislative Assembly, 52 to 60, Oregon Laws 1891,shall be liable for • , but rates shall not be fixed lower than will all damages done to the persons or property of . allow the net profits of any ditch,canal,flume others, arising from of fl leakage or overflow o a or system thereof to equal the prevailing legal water therefrom growing out of want of rate of interest on the amount of money actu- strength in the banks or walls, or negligence ally paid in and employed in the construction or want of care in the management of the and operation of the ditch, canals flume or ditch, canals flume or reservoir, However, system, damage resulting from extraordinary and unforeseen action of the elenients,or attribut- ' (3) This section and ORS 541,020 to able In whole or in part to the wrongful inter- I 541.080 may at any time be amended by the ference of another with the ditch,canal,flume . •: • Legislative Asseittl:..!:v, and commissioners for or reservoir, which may not be known to the the management of water rights and the use corporation for such length of time as would • • of water may be appointed, enable it by the exercise of reasonable efforts to remedy the same, shall not be recovered 541.020 Construction of ditelLeica, by against the corporation, corporation; route across lands. Whenever , any corporation organized, tinder the Act of 541.055 District liability for seepage ci 1891; pages 52 to 80,Oregon Laws 1891, finds and leakage from water or flood cor4rol it necessary to construct its ditCh) canal, works; limitation on commencement of . , flume, distributing ditches, or feeders across action. (1)Any person or irrigation,drainage, the improved or occupied lands of another, it water improvement or water control district shall select the shortest and most direct route organized pursuant to ORS chapter 545, M7, • practicable, having reference to cost of or 652, 653 or 564 that owns, operates or main- struction upon which the ditch, canal, flume, tains any irrigation, drainage, water supply, , distributing ditches, or feeders can be con- water control or flood control works shall be structeci with uniform or nearly uniform liable for damage caused by seepage and leak. ' grade. age from such works only to the extent that such damage is directly and proXimately It.1 541,030 Ditches, etc., across state caused by the negligence of the person or • . .. lands; grant of right of way, The right of irrigation, drainage, water improvement or , f to the extent specified in the Act of 1891, water control district organized pursuant to ' . pages 52 to 60, Oregon Laws 1801, for the ORS chapter 646,547,562, 663 or 5M and not , 801 mim §, .. a , . 4*, ..gditimmmnmmewmmmumimmimiiemmiamsummimmimmmmmimmmimsmmim , . I I CITY OF TIGARD PLANNING DEPARTMENT SCHOOL IMPACT STATEMENT FOR RESIDENTIAL DEVELOPMENTS OF 4 UNITS OR MORE • Since one aspect of development impact relates to schools, the following information must be completed, and this sheet submitted to the Planning Department with the effected application. Please call 639-4171 if there are any questions. 1. THE FOLLOWING IS TO BE COMPLETED BY THE DEVELOPER • Name of person or firm developing the property Donald A. Losli & E. Howard L., Person to contact Howard Losli Phone number 684-0750 Mailing address 8015 S. W. Hunziker Road., Tigard, Or. 97223 - Legal description of property being proposed for development (map number and tax lot(s) number 25-1-1B Lot 300 - In order to expedite responses from the school district involved, please inidcate a general vicinity description of the property being proposed for } development. Property north of existing Losli Manufacturing bldg. south of "Park 21.7 .w . rr - Does the proposed development regU3.r+e a: (please check appropriate box) Plan Amendment PD overlay on existing zoning and Sensitive Lands Permit • zone Change Subdivision Variance •,} r Conditional Use Permit - Total number of dwelling units being proposed NOne 1 • w,.., ,. r,,ww•er r.r~, , < . .,.rc ,,. ,.•,+.r,..won,.ah.• MK,I.iuwn wrie»- .. ""..."""In.■..s.ww----• --______ _ ' -----------r-----------_ . .. .. _ ., ........... ....._ ... TABLE OF CONTENTS (Plan & Program Requirements) PLAN ELEMENTS PAGE . . General Development Plan - 18. 56, 030 1 Existing and Proposed Contours 2 Existing and Proposed Utilities 3 Preliminary Subdivision Plan (Not applicable) • Land Use 4 , 1 Project Phasing 5 d,, • Dedications (Not applicable) . , • Traffic Circulation 6 Streets, Land Uses and Rights of Way 6 . . Pathway Systems 6 Parking (See Plan) • Truck Loading (See Plan) Building Type 7 • : . Preliminary Laildscape Plan 8 Open Space 8 •, Walls, Fencing & Screening (Not applicable) .• • . Storm Drainage (See Plan) •• . ' PROGRAM ELEMENTS ., ' woommemorwrimare...war i •• Goals and Objectives - 18. 56. 030 1 Market Analysis 2 • Land and Building Area Distribution By Use And 3 Permited Uses For The Planned Development • Density For Proposed Residential Development 4 • "! Table of Land And Building Area Distribution By Use 5 ..,. , . Restrictive Covenants . • Statement of Proposed Deviations in ariances 7 Floodplain Analysis And Hyd, dile Study 8y 9, 10 . • • Problem Statement 11 Flood Storage 12 • General Restriction 13 • Data Sheet And Results 14 . 1 ' a . a • , . , 1 a , , * ,, • LIST OF DRAWINGS • FIGURE NO. 1 Development Plan Inclusive Of a. Proposed Contours b. Utilities c. Open Space d. Circulation e. Parking & Truck Maneuvering f. Typical Building Plan • g. Landscape Plan • h. Location Map 2 Existing Contours, Boundary Map, Flood Section 3 Drainage Map A, • t it M , 1 �1 } f • • . PLAN ELEMENTS • f 11 .f . 0 4 7 ,, r • y .n ro.. • GENERAL DEVELOPIvNT PLAN The proposed development is situated on tax lot 300 map 2S-1-IBD. • The site is approximately 5. 23 acres in size and includes an existing building as well as vacant land adjacent to Highway 217 and Hunziker Street. The site is accessible froI7T S. W. Hunziker Street. The proposed building is envisioned as a low, principally single story structure used for business and industry. Off-street parking and truck service areas will be provided throughout the development. • The type of truck service anticipated for the uses described would be light trucking with smaller over-the -road and van type trucks utilized. ' Open space planning will be utilized throughout the development. The open space combined with landscaped areas will provide a campus-like setting and proper screening of the parking and maneuvering areas. The landscaped areas will provide a high quality set ting for entries into the building. Storm retention and floodplain requirements will be incorporated into the parking maneuvering and landscaped areas. The utilization of lands within the 100 Year Floodplain would be for actual building construction, landscaped area and parking and rnaneuv- �:. ering areas all in accordance with Chapter 18. 57 Flo'' 1!)lain District, the special use permits under the Sensitive Lands Ordi. tiance and the w floodplain and hydraulics study for the proposal, • 0. • .t... .l • ...n.,._...ter. ._.............. .. ...... _... . v EXISTING AND PROPOSED CONTOURS As the map of existing contours indicates, the site is relatively flat. The general slope to the west allows storm water to flow into the existing drainage ditch along the west property lines The average percentage of slope is approximately 1 1/2% to the west, for a total drop in elevation from east to west of approximately 3 to 3 1/2 feet. The 100 Year Flood elevation is 152. 0 feet, while the site elevations vary from 153. 0 feet to 149. 5 feet. The map of proposed contours indicates placement of parking, man- euvering, landscaping and open areas within the existing grades as much as possible. The building, and excavated areas for flood storage, only portions the site to be modified within the 100 Year will. be the onl orto �f t will be cut or filled above or below 100 Year Flood plain. These areas w p g y generally Flood elevation. The existing access way from S. W. Hunziker is above the 100 Year Flood plain elevation. Th . roadway will not be revised. • # h ry 11 1 _ ----------- • • x • EXISTING AND PROPOSED UTILITIES All existing and proposed utilities are shown on the plan provided. x', As indicated, sanitary sewer, water, electricity and gas are all readily accessible at locations on/or adjacent to the existing site. Encompassed in the Development Plan are the extensions of these utilities along with provisions for storm sewers throughout the site to enable the development of the project. • N f s' .t f e T LANl7 USE 1 The principal uses of land within the project are open space, landscaping, parking, truck service areas, maneuvering areas and the proposed building. The utilization of lands with respect to the building will be principally light industrial and office. Encompassed in these ;-rincf,pal uses will be warehousing, light manufacturing and offices as elaborated in later sections of this presentation. , 4 •i b . t . ` � r A A • i e } W I: Y I• PROJECT PHASING As indicated by the Plan, the proposal consists of a single building and an addition to an existing building. The initial phase will en- compass the development of the building pad. Construction is tentatively scheduled to start prior to mid 1982. • Phase II of the project would be construction of the actual building, \• utility services, and access ways. This phase of the work will proceed after tenant commitment and completion of the building pad. • • •j j1�1gq4 ('a 1 r , .ui.. Y .4 r, .o... '. k oNw•.- x z;w I ;M. ,..°:7'Bw. .Y....4'!-'{:!'Yd1yYAF • i A CIRCULATION, PARKING AND TRUCK MANEUVERING As shown on the Plan, the primary vehicular circulation pattern into the site is within a shared access easement with two adjacent property • owners. The shared access into the adjoining sites is a reciprocal easement as recorded in Book 641, Page 649°^654 and as denoted on the Weddle survey drawing. This roadway provides ready access for cars to the parking areas and trucks to the truck services areas. In some cases these specific areas are combined, as the amount of traffic is anticipated to be quite low. The truck traffic anticipated will be the b smaller van-type trucks and all truck areas are designed for this type of use. Pedestrian circulation systems within the site consist of sidewalks connecting the parking areas to the buildings. Parking areas will be located near the office entries to eliminate the crossing of pedes- • trian circulation with vehicular traffic wherever possible. • r 1 F :1 1 !! v — ,•• t-A TYPICAL BUILDING TYPE • • The proposed building %I:1 be a low concrete structure. The addition • to the existing building will match that structure in appearance. These structures will be located in a manner to provide adequate parking at/or near the major building entrances and to provide for truck service areas • as shown, with as much landscape screening adjacent to the building as practical. • The structures themselves will have concrete floors and walls with wood framed roofs. The concrete surfaces will be painted and/or treated to • provide a pleasing appearance for offices and businesses. It is anticipated that with careful architectural design and with the use of consistent graphics, the entire project will be developed with a singular identity. Generally, the buildings will be designed to accommodate warehouse/ manufacturing type uses. The office areas will be located toward the • front of the buildings and will be adjacent to the parking areas. The office and parking areas will be located so the office fronts may take advantage of visibility and the landscaped areas. The design of this building will emphasize flexibility to enable the in- . dividual occupants of all or part of the structure to create individual spaces as required. It is anticipated that an occupant would require a minimum of approximately 2, 000 square feet, so it would be possible to have seven1 different businesses Within the structure. • • • • !. r' • PRELIMINARY LANDSCAPE PLAN The landscape concept will emphasize utilization of the open space within the floodplain area. This area is intended to be fully landscaped rather than left in a rough, natural state. Any ponding areas will be treated as landscape accent areas and will be made an accessible and, vital part of the overall landscape plan. This area will be integrated with the adjacent Park 217 development. Landscaping near the new structures will provide screening and softening of the buildings, designed to create a campus-like setting. • • z , • • • • x., PROGRAM ELEMENTS . . 0 • F, 1 A.; • GOALS AND OBJECTIVES The goals and objectives for the proposed Planned Development are as follows: 1. Develop a successful office and light industrial business center which will utilize the high site visibility, and to visually integrate it with the Park 217 complex. 2. Develop this site in a manner that provides the highest quality • of business space possible by providing the most technologically advanced • ,; vanced building type within the most pleasant setting, 3. Plan and develop the site in a manner that the impact of the development is strong and positive within the community. This will be achieved,by a. ensuring that existing traffic patterns are negatively affected; b. providing a design that complements the surrounding lands and structures; c. assuring that the existing floodplain areas are not negatively affected. d. improving ng the overall drainage of the area through the project development. • ti T1 I ir, • i�. • • + Grp PERMITTED USES FOR THE PLANNED DEVELOPMENT '1 1 . The permitted uses for this Planned Development are classified as 4 I office/industrial. The office industrial uses permitted/' pe ' ted will be those uses provided by Chapter 18. 4 8 of the Tigard Zoning Ordinance, Subsection 18. 4 8. 010 and the permitted uses listed under Chapter 18. 52 of the Tigard Zoning Ordinance, Subsection 18. 52. 010. These include uses as listed within the Light Industrial Zone (M3) and ,•, the Industrial Park Zone (M4). • • ' r. i v l k l6t e.f a 1 F i J Yi MI t+M1 .MY k u tl d Ittd r . 4 w • • • • TABLES OF DENSITY FOR PROPOSED RESIDENTIAL DEVELOPMENT Since the proposal is for a office/industrial use, no residential development is contemplated within it. Therefore, this require- merit of Ordinance 18. 56 does not apply. • • e , it is e ' TABLE OF LAND AND BUILDING AREA DISTRIBUTION BY USE i• The utilization of the proposed properties can be broken down • as follows: DESCRIPTION SQUARE FOOTAGE ACREAGE PERCENTAGE E' ,f.. Total Site 227, 990 5. 23 100% Exist g Building 32, 000 . 73 14% • Future Addition 9, 375 . 22 4% Proposed Bldg. 37, 500 . 86 16% Future Office 3, 000 07 • Total Bldg. 81, 875 1 Paving Area 88, 765 2. 03 39% Landscape Areas & Open Spaces (Inclusive 57. 350. 1. 32 25% of Drainage Ditch) • • • i y A y. 7 RESTRICTIVE COVENANTS This project will be accomplished and owned by one party. All space provided within this development will be leased by the owner to individual businesses. The responsibility for maintenance of the entire site will be upon the owner. Therefore, no restrictive covenants are necessary. • • • I a1 • • STATEMENT OF PROPOSED DEVIATIONS OR VARIANCES The project rPon5res deviations or variances from the standards of the k,. City of Tig4 .ling Code as follows: L Chapter `loodplain District Deviations from the restrictions set forth in this section include the utilization of the floodplain areas for off-street parking and • vehicular maneuvering and for building siting. In order to accomplish this, the proposal includes filling within the floodplain, the location of permanent structures within the existing floodplain, and the change in topography or terrain in the floodplain. As substai,dated in the enclosed studies, the required changes to the floodplain will be allowable with respect to floodwater flow, flood hazard, and direction or velocity' of floodwater flows. 2. Chapter 18.. 59 Desi n Review The Tigard Zoning Code, Subsection 18. 59. 060 (d) (2) (D) i ii); requires: "tree �. . ._.,. . . tree and shrub planting areas of a minimum eight, feet in width within parking areas shall be provided, and maintained at approximately • seventy feet on center each way, or an aggregate amount. " The General Plan and General Landscaping Plan pr,oxide for extensive landscaping and open space far beyond the minimums set forth within thi.., Code. Landscape islands will be provided within the parking areas, but the seventy foot spacings have been altered to allow for more efficient parking groups and for more efficient screening of traffic ways and building entries. • 7 ! . V •1 .Y FLOODPLAIN ANALYSIS AND HYDRAULIC STUDY INTRODUCTION The following report and accompanying illustrations provide findings and conclusions of a floodplain and hydrology impact study of the project. The specific area is the Red Rock Creek drainage area adjacent to the proposed site. The floodplain is the 100 Year Floodplain as established by the U. S. Army Corp of Engineers for the Fanno Creek/Red Rock Creek drainage area The improvements to this area, which are nec- essary for the development of the site, consist of the following: 1. Filling within a portion of the floodplain for the following uses: a. building site b. landscaping c. parking and vehicular maneuvering 2. Utilization of portions of the existing floodplain for open space • and landscaping (without filling) 3. Excavation within portions of the floodplain for the following uses: a, floodplain storage displacement and improvement b. overall site and area drainage improvement c. open space and landscaping • d. truck loading/unloading dock • SUMMARY OF CONCLUSIONS AND FINDINGS The results of the study lead to the following conclusions: a. The areas within the floodplain on the site which are proposed to be • fined, are backwater areas of the floodplain itself, These are areas where during the period of a 100 year storm, the storm waters may back tip and be stored, but where no appreciable moving water is located. b. The floodplain filling and excavation and proposed modifications to the drainage channel for Red Rock Creek, will have no negative effect on the waterflow or the floodplain downstream or upstream from the site. C. The amount and placement of fill within the floodplain would result in a reduction of the flood storage capacity as it exists on the site; however, the excavations within the floodplain will result in a net addition to the overall flood storage capacity. • d. The impact of the filling and excavation within the floodplain will result in an improvement to both the flood storage and the overall drainage system. The improvement to the drainage system is a result of the engineered excavation proposed for the site, which serves to replace flood storage capacity as an improved channel for Red Rock Creek. This channel can be integrated with future off-site channel improvements. Construction within the floodplain consists of an embankment for the building and building access and excavation along the westerly and northerly property lines to maintain the flood capabity of Red Rock Creek. The embankment will generally be 6$' to 12" above the existing grade in the parking areas and an average of 3 1/2 feet above the existing • grade in the building areas. DESCRIPTION OF SITE AND IMPROVEMENTS The site lies within the City of Tigard, bounded on the south by S. W. Hunziker Street and the north by Highway 217. Red Rock Creek flows by the west side of the property. The property generally slopes toward • the west from an elevation of approximately 153 down to an elevation of 149. 5. All elevations are referenced to U. S. Co and G. S. 1947 Datum. The site in its present condition is undeveloped north of the existing Los li building except for a paved roadway from Hunziker Street to tax lot 100, and is generally grassy, with some small trees. The Army Corps of Engineers has estimated the 100 year floodplain for Red Rock Creek in a 1979 survey, entitled "Floodplain Information - Red Rock Creek - Tigard, Oregon. This study indicates that the 100 year floodplain has an elevation of approximately 151. 6 feet at the downstream , , .. -. . • .-..,.. -r.._..♦ ........ - _ r a .tit. . .^ 4 end of the concrete box culvert under Highway X17, which is in the vicinity of the northerly corner of the property. CH2M/Hill is now studying the floodplain in the area, however, there data is not published at this time. The Army Corps of Engineers and CH2M/Hill correspond favorably, and this study responds to information gathered from both organizations. • ,n r, 7 ", • I. 1 . PROBLEM STATEMENT There are two ways that proposed construction can create a hydraulic ". impact on the flood capacity of Red Rock Creek; 1. The embankment may decrease the capacity to store flood water; or 2. The embankment may cause a constriction which would result t. in additional flooding. • These potential problems are addressed in this report under the headings of "Flood Storage and ''Channel Restriction. " • I4 • . t. i • t;,n,.:Lo-hT.I'x •7 H 'al"P* +«b1.i31-y,.,.r,r41 1'11.v,"YI r • • FLOOD STORAGE • In order to determine the effect of the proposed construction on the storage capacity of the floodplain, the volume of net fill, or excavation, within the 100 year floodplain is calculated. Net fill would result in a decrease in floodplain storage volume, while a net excavation will . . provide an additional storage volume. The proposed work, as indicated, requires 2847 cubic yards of fill and 3009 cubic yards of excavation. yielding a net gain in the floodplain storage capacity of Red Rock Creek .., of 162 cubic yards. Therefore, the construction increases storage volume. • • F• 1: p't , • • {+j y 1 fi _ .- ,. v,-.i- ,. —1:.,u,,r ,. r,. ..i.x W J.J A ..fa,. !•I.J.t}, r..dA krl ilt]0....i.14.N.1 ` CHANNEL RESTRICTION The flood profile through the site can be computed using the "Standard Step Backwater Computations. " Comparison of the results of this procedure will be applied to both the existing and proposed condition in order to demonstrate the effect of the proposed construction of the floodplain elevation. In the data available from the Army Corps of Engineers, it is apparent that the flow is subcritical and the floodplain , elevation is controlled downstream by Hunziker Road, which is located at, the southwest corner of the site. Under these conditions, relative differences between existing and proposed conditions can be determined by computing the floodplain elevation from Hunziker Road through the site •t: s ' r; rt. . k Off; 41 • 1 .• ■ , •• DATA SHEET AND RESULTS Backwater Curve 100 Year Flow Rate - 285 cis, based on CH2M Hill 100 year flow at • Fanno Creek of 317 cfs and estimating that 90 % of the drainage basin is above Hunziker Road. 4 Mannings 'n' 0. 030 - O. 080 Velocity Coeff = 1. 36 Control PT Elevation - Downstream control assumed at Hunziker Road • curb EL = 150. 8' • • 100 Year Flood Profile Elevations Before & After Construction • Elevation Elevation Elevation Section * Before Const. After Const. Change 0 (Hunziker 151. 60 151. 60 0 1 151. 85 151. 90 +0. 05' 2 152. 10 152. 16 +0. 06' 153. 10 152. 40 -0. 70' * See accompanying "Location Map" These results clearly show that there is no significant effe, t on the floocIplain profile due to the proposed construction; the only effect is a slight increase at Sections 1 and 2, and a lowering of a 70 ft at section 3, the latter due to the increased hydraulic efficiency of the pond egcavatioh. ' •, ., . .... ,. ..1 ■ ''. '• • • ' • . . , , , , , . . . . , , • . . . . . • • , • . ., .• ... • . , ,■ —.,..- 4., ..- .. _ . '' . .....-,-...,.. ,...--....■ . . „ . r. . . .. ■. . , . . • Y. , . . •, . 1 /''' . . . .. . • . . • , •. . . „ • • i• .. .., . •• « . . •..'''/:::. .. _,,. - t. , . . 4 , , Georgia Pacific Corp. ( Georgia Pacific Corp. ‘, ;... Coe Manufacturing Co. ',- - 7920 S.W. Hunziker Drive '-- ,, 900 S.W. 5th Ave. ' P .O. Box 520 Tigard, Oregon 97223 PcPtlandu Ogeon 97202 Painesville, Ohio _ , „ . , •. . , • Coe Manufacturing Company Christen Crow-Spieker-Hosford 067 . ik: . . 7930 S.W. Hunziker Drive Route 4 Box 239 7110 S.W. Fir Loop ' ,.. ':-. Tigard, Oregon 97223 Sherwood, Oregon 97140 Tigard, Oregon 97223 , .• _ . .• , . , . , . , • . ,: . ,. , ' GrUnbaum Kne z U.S . Natural Resources In .. ' Route 3 Box 277B 8185 S.W. Hunziker P.O. Box 23038 -: Sherwood, Oregon 97140 Tigard, Oregon 97223 Portland, Oregon , . . .....,. . , • .„,,,... . , . . . Palmer G. Lewis Co. Hartig , Klokke Corp. • • ,.-‘. ". •.. , . 8100 S.W. Hunziker Rd. 14430 S.W. 94th Ct. 900 S.W. 5th Suite 1514 Tigard, Oregon 97223 Tigard, Oregon 97223 Portland, Oregon 97204 ..,., ., • , '.'4' Occupant 4''''''''' ; , -,..„,k,. if • , ,--1, ,,,-.../c, 1„.„„, v-6,,,,,, ,..., n.,.',..,,,:, ,- 8001 S.W. Hunziker Rd. e,7/.. / L,A,,.;s,.., 7 r, .., ,,,,, . . . Tigard, Oregon 97223 .4,,, ii,74,1, _ 4,:11 c." i ,-',. -4„,11„, ., . , . , . , . . • , , ,•,,, .,. . . , . . , ., . , . , ' • ,• .. . , . . . .. • „ . .. • . I. O'l ' kk:!1•1' ''' . . ' dr, . s . • . . . • • • k Y . 0 •'` . • ' ,.y . . • . ' . , : \ •, , . , ,:.',`,.., , 2S'1, Dil) 14-4-81 Los 1 i i, 2S1 1RD 1U0 ' I - q A , .i D6nald A. & B. 'toward Losli, 1/4 I '.' 8015 S.W. Hunziker Rd. City oE Tigard * ''' 'Pl*C 11, I) L. L*) . T. igaTd, Oregon 97223 . , . . ', Gary Thornton 200 , Mackenzie Eng. KLOKKE CORPORATION 0690 S.W. Bancroft 900 S.W. 5th Suite 1514 Portland, Oregon 97201 Poetland, Oregon 97204 ., • Linden Bowman 500 Wilcox Building 506 S.W. 6th P6rtland, ORegon 97204 i'b.,' • o.''. ‘... i,,, N )4,.\\... I Chris Vanderwood V ..`,..;,„82 2S1 1DA 41,11';: thtu 400 .4.r . • 14345 S.W. 80th Place 014'14 E. Chilcote W . qe ,.,..,' Tigard, Oregon 97223 P.O , Box 1488 ,w) f'ii, Lak.,Allsvaego, Ore:S: 97034 „.. 2S1 1 lot 1202 T.'arme41 Insuranui!;1/4n" row), ' n ohn "4o ' Coe Manufacturing Company Attn. .,'' ilagn : w 01, P.O. Box 520 13333 ',.,'.',,,,.W.68tfilarkway Painesville, Ohio 44077 TigardlijOregolf7223 600 60e700 fr4•o0 Coe Manufacturing Co. Farmen; nsurqxe Group f, :;•?,, 7930 S.W. Hunziker Drive Attn. 1-Pol oidngrich yv, ,' ..: Tigard, Oregon 97223 4680 W ,'-',, sh'yfpe., Boulevard -,, 0.....! Los Ansa..4.es .,: a. , 90010 , ,..- ,., .. } ‘ „, ' 281 1BB 200 i 1 Crow-Spieker-liosford # 67 izHoidi. 4,,,gopatly 4fia0x ,rr,14 7110 84W4 Fir Loop zzzx Tigard, Oregon 97223 1 OA' •:, 2S1 IBA 200 2S1 lAD 5,Y,:',.; . Christen, Louis & Bertha Portlanel l',',A ral Emp. Credit Un. Route 4 Box 239 Head Builit.f. . .t. . Sherwood, Ore. 97140 421 S,w, ii,tt 4 '1 . 1 Portland 011,', 97204 , . • 281 180 100 & 102 3200 AMMO • 8185 S,W, iluntitter 6600 S,U` itial)ton. St, Tigard, ORegon 97223 Box 255;i: " . ! .. . Portia ,t ii Or41,,oti 97223 • 1 i 1 ? f 101 /5 , , US NATURAL RESOURCE INC. 13,J14A -C4'‘,1 P.O. Box 23038 , 1 P.O. 4ox 2357 Portland, Oregon 97225 Port1.1;.d) Ore? ti 97223 i , s 2501 NPO ii. 4 , TO.-'140t,1 c6, 3990 • Palmer 0, towi8 Co, 00rd I Martin 8100 8,W, HunP •ker Rd, 1226S.W, 72Ct!.,' , . ' TioArri. Oroomh 07/91 Tiga 4, OrogaCt972J1 , . . .,.. . , , .., , , . , . . , 4 , .,, , ... . 1 , ,' " , ,,,,,,..,,,, „, .,,,..4 L t* • . , 4'144,13'441j.,,,4 3444,,) \ .: ' . ') 0 1, Of• . i ., 4,,,, 4 4 0 044 *‘"‘ ,g '44 e' ° , ,e_,-,..,•, , l'st,-L, t . ., .,,, • 4,,,, . I ' ...;.,041.1 , 0 401' ,..,..cis : It IISZt, t , A , ''k •t) 4 VI. • ...,..,....*-4" ,,„, ,,,,.. .....- 4,0 x ...."-,-,..../. 1 : F .,.. 1 ,-.,... , 4°:<''''''' i' ' ""'"Pi....4a*,,,,,,„ "."'....:'' ''. t" .-414,41,-- -,...,,,, .„,,..,,,k . 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