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CU89-01 POOR QUALITY RECORD PLEASE NOTE: The original paper record has been archived and put on microfilm.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. •.' " , :. w '1{."I' •.' ..' a.1 4 .r y.^... :1- ., 4x'1 e,.;r;�^•'k{l:-±., ...'m M 2{. 1 , ' �6 6 � '/9 t'. ' � 14 P{l++ , 1. t ; Y f• �1 I• .n -.-M ytham Wast Ma ei Treatment Pl ,, ,. i, ,. n t {• ..� •� Tom•, 2S1 11DD 1 t 600 p r, Tr '+,L. y jor M;I r ,, ��MM4 .r' t, `' M, .{ r l 1 a ' "4% W�x"1 I. M }.M 1• l0 „AK"' h.. I � ", 11• •w, Y A v4,l •{+I Two + ,,k,, ur ■ 4 1Y1: r 1 i{�� {� wT `i v" q w' ', r is"*I. y hI n A • w• " " "•` \*. 4. li : p H • �rw. Z,.ri f k " } M� " r l • ,1 K i+ w ,Y 4 q.'.q..,J7 'q, ...) ,.."" i M 4 r I ,+ n 4 44 Y J .y, i vl •.� � :ii lu , `*`'' ■ ii w 44 A �'• L G x I •,C0 k t !' i R";p1 • •. r I � .A, �� .. '.!. t"Jr br. •e r�, K � 1« J +y, .5 �' , .h • ,;w, d � I �.� i r. M.n `y'y , :AP'„- i',.' -.:,,',' -' ,',/,'1,',, ,, ,,,,■ ,,' - , , ' ',': , 1.-- , ,; ',:r...,•;'' ;,I '1 ,',', 41 ' ,,1 4 0 4" -, ,',■,:. ' ,,, ;',,,4 ,":' ••4 ,',', , . , $010.qt Supplemental Information List of Property Onwers ..', „ .. ...0 :', • ; Page 3 • '1 Tax Lot Owner of Record ','• ''14' '.,)'" . '..*, T2S niw. 13B •,,, .t.,... 300 School District No. 23J 13137 SW Pacific Highway - , ,,,. ,. Tigard, OR 97223 •., , ., '..,,,,, ; , 400 Edwards, Joanne A. '- '''..', .', .. 8100 SW Durham Rd ... ,.....,:•'. ,:‘,...,•, Tigard, OR 97224 '., .'„ ' '. .c ''''''.4 ' ,.. ':. 500 Moore, Donald Leslie & Joan K. , 8170 SW Durham Rd i,..:,. ' . .„ •.,. Tigard, OR 97224 :',•., ;:..,,,,:.:. , , 1- 4... 2200 Nelson, Arthur C. . „ ', ' .' • 2926 Delcourt Dr .; ,.• ., . . . .; tu ',,,,,", , Decar, GA 30033 1 ''', T28 R1W 14D .k■■14, 1,:e. t,,,., 100 Thomas, John N. & Sally P. . , 16575 SW 85th Ave .(1 Tigard, OR 97223 .,. ,".,... . . 14A T2S /1A1W . 100 Tigard School DiStrict No. 233 13137 SW Pacific Highway .r, Tigard, OR 97223 , .,.,, 1000 Lamb, Charles fi Zada A. Gray, R.A. & Linda D. d 11445 SW Tiedeman .,.. . 4 ,,... 4, Tigard, OR 97223 „ i . _ 1100 Tigard Street Investment Co. ,.- PO Box 23516 A ::,,.','". 0 :• Tigard, OR 97223 ' 1 , . ." , 1300 ThoMas, John M. & Sally P. ., 16575 SW 85th Ave I Tigard, OR 97223 , ... w - 1301 Unified Sewerage Agency . , I., ., .: 150 N Virst Ave ,.... , Hillsboro OR 97124 , • , .. .i 1302 Same as T.L. 1300 . .),4 ,, ,,. • - ., , , , " •:,,` b. *4- 44' 'ij . ..„ - *, `.." :',::,, ''. '' ,''' '''':“:[,.'". '4.' '... ..44'..4.' :I : , " ' . .':',.':'''.4'1 . . ., .... .. > .Y 1. t4,: `i,• A i •','rr•,( f r`I ',' ,F ' ''tl'. 1 I .l 1: 'I 140 k.4. . '1 ''';`i..,Yi RI T COMMENTS° ,..—,-;.---1119-0�1:' DATE: J J Y •� 89 ''.X.';;: PROM t Tigard Planning Department �`, RE: CU 89-01 UNIFIED SEWERAGE AGENCY Request for conditional use approval of -' ``'. ,:,.'...• a minor modification to an established previously approved conditional '':n. use. The applicant proposes to construct a new primary clarifier and i,i sludges pumping station at the Durham Wastewater Treatment Plant located at Durham Road. the property is zoned I�'P (lndustrial Park). LOCATION: SE a � � .4. Corner of Durham Road and SW 86th Ave. (W�:T 4 2:31 �.�''D, lot 600). ,'!°' 'C'' `,' (° Attached is the Site Plan and applicant's statement for your review. From , ` „ <,,. r information supplied by various departments and agencies and from other '„. .,'I' information available to our staff, a report and recommendation will be ,•:71 :,,;. prepared sand ado decision will be rendered on the proposall in the near future. Y..'',' 1 If you wish to comment on this application, we need your comments by ... ,':"`:,.,A;,%, 22A_1202. You may use the space provided below or attach a separate letter • f o_ are u 1 able to ...- •() b - e�.. bgyp etea� to return your comments. ,� �.� ._ ''• 1: ', ''''' please phone the staff contact noted below with your comments and confirm your ::' ”- "" ",` cot menti in writing as soon as possible. If you have any quteaatione regarding r ' `,`' this matter, contact the Tigard Planning Department, PO Box 23397, 13125 SW ,.. .:r,yAE.:;', Hall Blvd., Tigard, OR 97223. PHONE: 639-4171. •r r� :, ti°:l - •''1' STAFF CONTACT: Rk X l9FT'DR "°:' j PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: .. ,'d ....4,4r"' We have reviewed the proposal and have no objections to it. ;.::f' ' `.,:'::'•'' Please Contact of our office ,At , `'Y t. ,MI " ip; Please refer to the enclosed letter. • t Y . .o' ' Written Commente: I ._ ._. — "i' ,,,,o,,4', ,=. .F.4I , 9.rIM :;1 'Pr r✓r 1• . It �IT "I r M Name of Person Commenting: __ .... : ,,l Phone Number: S v.'`I',.. '' "d .. o-:. _ .-... •:. ..-.- _ ..tea... ..:.d .. ...... _ ._....: - - +j s; 1::J 1 I RI) 3a ! X - 4 w ';�f f: tsq.,ar 0 ( -. •.:. 0,„,. . Al f':. Richard & Teresa Bowaa 8115 SW Durham Rd. Tigard, OR 97223 _ ♦Y -s --_ -a-.. .. -.. __ of._ : ..r -.. ..•..-.. v :. s.'_ «.. .._ -. _ - - - - - - 1 t -y t ,t+f i4 i! .f,. #, r/l .iL 1' •{ # 5 �;,i L/�' -t N. t j ,, ,5 f.. .1, i t t ,5� 't� ..# ,.t . r. ..'.F�'; .. i ►, �.. 5 ,. it. rlt,.. �f..�.,;.. '� `�#., �..,, ,.., ...' ��t:. Y. . i :I,t � #� •�r°.�. ;�t�� ref •f v., •t. t1 r3, VS !'re# '",+ ''!, c::, ''f..;.:,, , 44, 0-,- :.),:',.,.::': . e ..F S.if Y1.•tl ,„1 n', ib, ,,,,,,`Y e�p'"A • a l5.'•'�t A A Ertl wr '-+', ,e.; 7.•,,4'4 I� ,:'''r:,;" ,7,v? t rift te,� Y UNIFIED SEWERAGE AGENCY ,,';,' �k�•i,i�"t,,a''�' ,_,'n•;roe OF ,,,. 4. •h-4�' WASHINGTON COUNTY, OREGON °,.. i e5_ :k,v, f• t rn 1 .' i,', VV „,,, NEW PRIMARY CLARIFIER ..e��- i,. AND .Y .,ft RAW SLUDGE PUMPING STATION `` 1 V 1 i','"6Y•;a `+51,1',.i'l,�,• Y;`y' •ply''" ;�� } ,'t.1 ,:. t • CONDITIONAL USE PERMIT i4,i.e : MINOR ODIPI ATICC:,.,. ,i MO ' :; !6 '` December, 1988 r. ' Ft p+ "i ` `' ! .4 'r`'t.K Gift if 1 1f, rr i .- ,,, ., !"-yr. Y.!'' � .'�"N'1 .x !, ` �Ly � t;Y,. yl' nt + G,IA f .i t •� " 'q t �w, ri f�� Y, . r r ! Y � ,•I+.• F .0 ',. r « 0' ' , t •: 1 y f• ,. rr. !MI rr{„ , ft/'f:r r ' f i n , y, w ,, r . r « ° 6 _ r ,• 0 / .: ',b",', o'.'it>• r 1. UNIFIED SEWERAGE AGENCY 7:,«rti,,,,• t: t;:.,: CONDITIONAL USE PERMIT�MINOR MODIFICATION .,, `;: SUPPLEMENTAL INFORMATION December, 1988 ° �! .,, '” A. SITE CONDITIONS .i Y•Y+• I•.•1'.! • !x,4 ,'• ` ':: 1. A vicinity map showing streets and access points,pedestrian and bicycle pathways, '. IJ',,:;i id�ansit stops and utility locations. . ''' r'i4-tS,' r>ryA •,r ' �s,'", `' A vicinity map is provided on Figure 1, page 2, of this report. Existing access 1 .,.. points along 85th Avenue are identified on Sheets 101 and 102. No pedestrian '''� `1- ''i or bicycle pathways currently exist along 85th Avenue. No transit stops arc °- �;' :,. known to exist along Durham Road or 85th Avenue. Existing utilities currently }'.. ", identified arc shown on Sheets 109, 110 and 112. , :'n. 2: The site size and its dimensions-- v`' Al i The portion of the property owned by the Unified Sewerage Agency to be � r impacted by this project is shown on Sheet 110. Assessor maps identify the 1 1.41 `� .,'' ' ■.` parcel under tal lot number T2S R1W 11DD 600. Total acreage is approximately 50.4. t#41" I : .F '" .�t 3. Contour lines at 2-foot intervals for grades 0 to 10%and less, and 5-foot intervals for grades over ,1096-- 4'' °''' Contour lines at 1-foot intervals are shown on the site drawing at the subject 4 t1 :, property and on adjacent lands. The general topography of the site is gently Ni sloping from west to east. Elevations arc based on U.S.G>,S, datum, v{.. 171 11 I 4. �� 'he getieral location of drainage patterns- ‘. Mrry No well defined drainage exists on the site. Surface drainage follows t7 : g � y , topography in a west to east dirt+ction. Drainage from the subject property � • discharges to the Fanno Creek drainage area. • ■r.. a 'i r'.' ,1r l -I. tll �5�:Try. 1 ; .),.',. ...•..,,,,,.„, •,.,.." ..i.,...-'•,, .' . ',, t..''..',',', ''''. '.•', ,'.,', ,'Inifillbt.....'4411111619F'' - ` :t. ',r.,,,„ . •,,,' . ., t 1. ■ . " ".., ' .....t....................,._;,...,.,,,,__,..„,•.,,,„„..,,,,,,,,.,_„„...,,„.. , , . . ,/.. .....„......:... ...., P.-,,i , . ....,,.. . . . ..,..,...„.., ...,,„ , . ,„„. .. ......,.„ 26 - 4. '. e t '4,',t`•7 .• , • , . . . '!",':, • ^■', i . 5 .., ' ''*:' , PORTLAND , . ,,, . BEAVERTON HILLSDALLL....... zol . ,,„„..: . , .',„.',;• ",,. ...I, ......„..............., :., , ',,.1 7,•, ,,, ,. r 1 Pt. BEAVERTON* , 217 . . .; :7■ '.''' . 99W ., -.10 ' •,,I, ,,..,`:',:.','"-. SW SCI-1OLLS FERRY / LOWER BOONES ..,,, FERRY RD . , N•'“ '.'., ° '..'‘,. TIGARD 0 , •• , . SW HALL BLVD tr.., KING CITY . '.,i i r. CARMAN DR t ,, ., , , .. ., •„.. . , .',.,,,, SW DURHAM RD .,,, . 4 !DURHAM AWWTP .... , ■C' .' . t%■■ ' .....) . ' :-..■ l':'N. '''''. is 85th-I r.tbode FACILITIES . ., , I , .,. e,,..., % , .. --.‘„,- , % , ,..., t 4.1"'"'"'" %.,) .. , ' •. .4'.'..,,'. TUALAl'IN 41 4%*‘.......-.........,,, ..'`'.'"t -TUALATIN RIVE.R ',•,. ' es, . DURHAM ''\ t, ;,...',..‘ ASERREVAICE UPPER BOONES i , ., ,., . „t, .,.,•,, , ..''4'. .'■:!'. '■' . . , ."': ':' •:' . ''' ' ''''. .A.• i ''. . •A .,' .:... m . ,. :,.• .," . ...... -' , , " ,• ..... 1 . . ....1 • . , `Al . .. „, Y, , • .. DURHAM AWWTP PHASE I EXPANSION VICINITY MAP 1 .: ,. .... - .,, - CWC.HDR .,, , 1 1 ,,,, , , . ,., ., ,,,.. .. , v,.. , . „, .,,- .,•. ' .4 ...4. , ." . ". ' " '. 1...'.''''' + e',',. �` e" Y ' ` 1 A '..''',;',1 . .. 0 r-: # 5. The general location of natural hazard areas including: `.1• f r " (A) Floodplain areas (100-year flood plain and flooding) j 1'. 'r- J; d j b1) Im rovemeuts proposed on the subject property are not located within ; .1: the Tualatin River floodplain are 2, The identified floodplain elevation ' is 120.0, .. ,, a+'. (B) Slopes in excess of 259-- : , ,F S The subject property does not have slopes in excess of 25%. The ; predominant slopes on the subject property are less than 4%. •`, r,}u w , (C) Unstable ground (areas subject to slumping, earth slides or movement)-- 4„, No unstable ground conditions have been identified on the site. A copy u'` 'r, i i • tl ♦ tl i ,r.' • of the soils report for this project is included in Appendix A: ft0 ... : (A) Areas having a high seasonal water table within 0 to 24 inches of the surface 1 for three or more weeks of the year-- No areas of high seasonal water table have been identified on the sites i• A copy of the soils report for this project is included in Appendix A. ' 4' ' K , (L) Areas having a severe soil erosion potential— ,, I '' Y)i' . No areas of severe soil erosion have been identified on the site. A copy y of the soils report for this project is included in Appendix A. 1 (F) Areas having severe week foundation soils-- , 4. r No areas having severe weak foundation soils have been identified on i - the site. A copy of the soils report for this project is included in 4 0 3 '. Appendix A. 4 y�{ -3 • 4 0 : ; . un. ''+, .' ` 6. The general location of nature resource areas as shown on the Comprehensive Plant map inventory data-- .. ,�. No known natural resource areas such as wildlife habitats or wetlands exist on ' ' ;: the subject property, Drainageways and wetlands existing south of thw subject °.': , property will not be impacted by this project. ,'' •f' 7. The general location of site features including: .'r �' (4) Rock outcroppings-- •`4,.. No rock outc.roppings were identified on the subject property. A copy ` of the soils report for this project is included in A pp endix A. .` (,I) Trees with 6-inch caliper or greater measuring 4-feet front ground level-- i. Clearing and grubbing limits for the proposed improvements arc sf,hiwrr Pr' on Sheet 101 and Sheet 102. Clearing and grubbing limits have been held to a minimum, while permitting sufficient area for construction of tile • improvement s. 'rr ;';. The following list identifies those trees on the subject property, and on >`` ,, F the dedicated rightoofa way of 85th Avenue, which will be removed 'ts ' ,;`° - '� part of this project. ,; L;°:` ; ;`, Qpinility, Description 2 12 Inch Pine .'°, ' �: 2 8 Inch Pine 3 8 Inch Maple IL 11 6 Inch Maple . 2 8 Inch Alder A' .a `free removal will be mitigated by planting of trees on the subject N ILI property during cleanup and restoration of the site, 4'r`' `, : .y -4- • r 4. N <r4 4r v;y t, J +, , a 'y" ` 8. The location of existing structures on the site and proposed use of those structures-- ';.' :'r ', r r +1, r5? y` Existing structures on the subject property are identified on Sheet 101 and Sheet ' ' 102. Structures will remain. This project will•add a anew primary ch.rifier and "' „' . raw sludge pumping station which will be connected to the existing process rY , facilities with minor modif'cationm. ti 4 ? ,v. 9. The location and type of noise sources on the site or on adjoining property such as , traffic ways, mechanical equipment or nose producing land uses-- h +: a• �' N•"• Er The existing Durham Advanced Wastewater Treatment Plant(Durham AWWTP) r + ),,, is located on the subject property. Noise sources at the Durham AWWTP are ,' limited. To the north and west of the subject property,light industrial activities are beir4 conducted. A new headworks building will be ccastructed across 85th • ., �;; 4 Avenuic as permitted by the City of Tigard. The lands lying south of the subject property are currently undeveloped. J :Ii �. '„, %, . Noise levels at the proposed improvements will be controlled to no more than fi ...4', ,... 85 dBA inside the raw sludge pumping station and 65 d1 A outside the pumping P,•-. station. l}. st►,ation. 4 1 ,.';"'I' :4; 10. The proposed ventilation and odor control-- ,/ ; • }ti;' The ventilation approach at the raw nudge pumping station is to provide fresh #'4•4 r •„,'' . outside air to the relatively clean areas in the building and then transfer this .'" air through succeeding dirtier rooms until it is finally exhausted through the odor control tower. st k J ' T i This project will also include adding odor control facilities to the two existing ;w ' primary clarifiers and to the new primary clarifier, + 'f The odor control unit is a high pressure, mist type unit having a 10 second • ' detention for odorous gases from the primary clarifiers, raw sludge pumping ' station, and influent and effluent boxes. Odors will 1 be oxidized with sodium w hypochlorite under a pH adjusted environment using sodium hydroxide. The i F exhaust air from the odor control unit will pass through l mist eliminator and 4 :i exhaust from the roof of the raw sludge pumping station. Sodium hypochlorite { s x I i; w , a + b y. art '.•' *,t." � n `- ,}r atr i a• x t •F ,�. 1,•,r K vl e. ,, t... .. , . ,.t.t`, .t '� •!., ,... - ' 1 c '� `,i r ..1' ... ,�9w ' ! 14 ?'�,.�' •� ,! , 'G a", r ",'� ♦ • '7 sT '\ ::'°∎Y and sodium hydroxide will ,be, stored in 1,500 gallon and 500 gallon storage tanks, respectively, with vent and fill lines on the east fate of the raw sludge .' ', pumping station. Manually set, piston-diaphragm pumps will meter chemical •' ".'''�, flow to the odor control unit, ' At',r,`t .l, y•'..1j' t, ,j B. SITE PLAN ; ,, '`. ` :`�';�� 1. The proposed site and surrounding properties- ' •:',\ ., The proposed site is identified on Sheet 102 together with surrounding . M1 N . i . ' `ry- ` properties. Improvements to the subject property arc also indicated. Pipelines `'.'=t'' to be constructed and/or relocated are shown on Sheet 110. .',.',,C r'4y ' r. .i , ', ,< 2. Contour intervals-- :'1 ' See previous response, item A•(3). New contours are shown on Sheet 102: 'tt''.' fey 3. The location, dimensions and names of all: e,r (A) .Existing streets-- - ". 'i r?`,` txistirig streets in the area of subject property are shown on Figure 1. `t '' p,; , The subject property is adjacent to the 30-hoot dedicated right-of-way 0' of 85th Avcni.e.Sheet 102 indicates current cxistilig street conditions and ./ 1 '! r :;.k proposed improvements along the westerly boundary of the subj%�t property. "..k,,*., y, , I, .': , (II) Proposed Streets_, tip, E As part of this project,additional right-of-way y will be dedicated to 85th'? u) Avenue, An additional 30 feet will be dedicated along the cast side of Yi ' ' 85th Avenue old an additional 10 feet will be dedicated along the west ,' side of 85th Avenue, The total dedicated width of 85th Avenue,westerly ;�';' of the new primary clarifier, will be 70 feet. Improvements will be made to the curb line along the east side of 85th Avenue north of the primary clarifiers to the current access drive to the ., `rN,, -6- .w. • a, • •1'„y ';':,,:,6.,'....,,'�. ,' : ' ! + M , ' + •�1 �• -t x{11( j •#Y !s' 1 1 r S'' *••.. 1 I .1.•} . .. ' '.1 pia••• ' .s..+1 "'' ., Pw ,",; a,t. ,, Durham AWWTP. Along the west side of 85th Avenue, adjacent to the proposed new primary clarifier,85th Avenue will be improved to 34 feet ", in width with curb and gutter on both skies. At the south end of' 85th 1.' iMS Avenue, the full width improvements will be discontinued south of the '' . new plant access road to avoid damage to existing trees in the right-of- ,,•.".',' ,'', way. Pavement will be extended southerly to tie in current driveways ' _.�' of properties owned by John and Sally Thomas. {' 4 n ..i•' e. r ti,k '1t':: 4. The location and dimensio, op ..., (A) The entrances and exits on the site-- 1 1, ' A new 30-foot primary access to the existing Durham AWW1 P will be ' constructed at the southerly end of the improved 85th Avenue. The .,,,, ;.`;' ` ., existing entry way to the Durham purl t to the north will be modified ,, as shown on Sheet 101 as part of this project. ;; . t.�; (8) The parking and circulation areas- w ,,.,4, ,tt'r.V'P, x•14 1 ' z Employees of the Durham AWWTP currently utilize parking facilities in z ` ` front of the administration building. No new employees areanticipated t,,' to be hired as the result of this project. ` (C) Loading and service areas-- A, ''"Y . ,, The service area to the r ., . is..": �„'� ° proposed raw sludge pumping station � located ;. � � at ground level together with the MCC/Control room Odor control _ r ;•;, equipment and pumps arc located at the lower level. Operators attending ,, this facility will enter at the ground level (east side) and walk down the , , anterior stairway to attend the lower level equipment. , �'•'M (1)) Pedestrian and bicycle ciwcalatior.if applicable-- „ •+f, IMIg1 ,p ' (i n No pedestrian or bicycle circulation facilities currently exist along 85th �:: ' Avenue. As part of this project, an 8-foot wide sidewalk will be '; • constructed from the existing administration building to 85th Avenue and •,' then north on 85th Avenue to approximately 300-feet south of the ' existing main access to the Durham AWWTP . . ,.a4 7r, ...c w., d - .i ," ,# r. .{, t Y -"a a..., •'.s ,,.�,1', .� ilf - .-" .• . .. ., ,.. '� t a.` kr , C',,Y, , ,q.', '''' ' r -t 4.14'..', '. w' '' } .G 'r, r t ''� „ •, r I • i 4. •tlt. '4p ' (F) Outdoor common areas, if applicable-• .Y i..,.:��,I.,e outdoor common areas, in addition to those already existing, arc �� :. '�''.. proposed in this project, ',a:. v (F) Above ground utilities-- ;.,' f Y, al Potable VIater--Nta new water connection is required fol. the ' ,; `' a proposed primary clarifier and raw sludge pumping station construction. ..-,. 1"'''•;I " ‘.:::..1..�, a.', a Non-Potable Water--New 4-inch chlorinated effluent pipeline to .r.;` ' ,; `e, ' ,' be constructed to the new facilities. Landscaping to be irrigated• •f, with treated effluent(underground installation). Some relocation ' aY• r of existing irrigation piping will be required. a I; Natural Gas--No new gas connection is required for the proposed : "' ,,:r • primary dark e. r :L .d raw sludge pumping station construction. ', '..; K;' y IN Mum and Polymer--New pipelines for alum and polymer feeds :r,. i ' will be constructed to the new facilities (underground " • 4r installation). . F �: ; `,.';;• ® Electrical Power and Communication--electrical service and ;• °'' °' Y,• communication facilities will be extended underground from the ', , ` existing facilities at the Durham A 'r TP to the new facilities, ,'• The existing overhead power lines along 85th Avenue will be ; r moved to the east to permit construction of roadway ,# 0„ i f ,, t', , +. h. ' ,1 >.,, 0.,,,,,:.„ rAytwr. •„;• 7 J'1' i1r• • N • 1 `.•;"" 'Y;' r M T• ■ei...• .,'•,.qtr;'• r �- . ,. . 4.'' ■ Is F '".''. (.1) Located within.25 feet of the site and are on adjoining property- .. N • t'3, :, ` Existing stt�octures on site and on adjoining property are shown .,,t,, on Sheets 101 and 102. All structures located adjacent to the `"'? ;„ :gin t,',,; .. , , `', subject property are setback greater than 5 feet from centerline of the new 85th Avenue improvements. 4' e P It .•f' '1 �,.y ',,,, ( ') To remain on,site-- ;,' 3 :.;`:, : Existing structures to remain on site arc setback greater than 75 '` �.'`� '`.",:. feet from centerline of the new 85th Avenue improvements. �� `';:::;„ (B) proposed structures, improvements and utilities on the site-- (, The proposed facilities are shown on Sheet 102. All new structures will ;, ; ;`:' w': be set back a minimum of 75 feet from ce=nterline of the new 85th ;y r F .'. Avenue improvements. 7. The location of oreas to be landscaped-- ' ' , ;A, = Landscape features include low growth ground cover,deciduous and evergreen '„I. '' ..` .,�` trees and grass planting. All landscaping will be irrigated by underground s ; r ,1 °:”, sprinkler using non-potable le water from the Durham AWWTl”, °1;, `k, .Y ° 8. The locations of proposed utility lines-- , 1' ;,, ; .; r. 'Y..' I ,`.'1 .. .ht 0 . .4 ''.;;' 10. The location of all structures and their orientation-- 7 u 1‘ The location and orientation of all structures are shown on Sheet 102. Structures t`•�` et , .� are aligned with existing facaliee" ' ,,', .;4 •' i 11. the location and type of outdoor lighting considering crime prevention techniques- ' Outdoor lighting, similar to that existing at the Durham AVVWTP, will be '': :`:.., N ,_:r;f' continued. i,. ;, 4.':G. C. GRADING PLAN ''` 1. The sure development plan shall include a grading plan at the same scale as the site "° analysis drawings and shall contain the following information: ; ',•4Y;' ('A) Requirements in Sections 18.130.080 and 18.130.090 of this clapter- , Requirements as set forth in the above paragraphs are descrifted in the ;,,: ' previous text. .,r % 1 r' i i ,M , ,1 i (B) The location and extent to which grading will take place indicating general ,1 � � ,, k. contour lines,slope ratios and slope stabilization proposals-- si Location and extent of grading to be included in this project is identified r' on Sheets 101 and 102. in those Freres where the slope of the fatal surface �`4 `'4, ,:: ',.. 4, is 2 horizontal to 1 vertical or greater, the slope will be protected from `.t erosion with a biaxially oriented net while grass surfacing becomes I :, `.,, established. fl*i 1 IC N� ; (C) A statement from a registered engineer supported by factual data 01) substantiating the validity of the slope stabilization proposals: and that all problems will be mitigated and how they will be mitigated-o r* ,., K . . . �'1 ' fa A copy of the soils report for this project is included in Appendix A. : ■ ■ 'r.... . F,,t;'uj,, -10- t,,Y^ .I 51 ''1• '•1 ,y. • ..• ♦ ... 1 r ' ` r V. .. 71 .1- ., 1 �''I+: '•' .. ,1, 0 J ■ d • *., , ; lx ARCHITECTURAL DRAWINGS . .. 1, The square footage of all structures proposed for use on-site- , b. , 1 The facility to be constructed in this project is a new primary clarifier and raw sludge pumping station to add to the treatment capacity of the existing treatment plant, The majority of the structure will be located below ground; 1 That portion above ground will contain mechanical, electrical and control 1 '' equipment. Sheets 402 and 403 pro vide lower and upper plans of the proposed 11 primary clarifier and raw sludge puar►ping station. 2. Preliminary elevation drawings of each structure-- , d.: ' Preliminary elevations of the new primary clarifier and raw sludge pumping station are shown on Sheet 401. The exposed structure will be constructed from•',,'li '.H. Ib 1 : cast-in-place concrete. The structure will conform with the architectural concept used on the existing treatment plant, E. LANDSCAPING PLAN I f •i 1 L The general location of fences, buffers and screenings-- r Security fences will be added to the existing fencing as shown on Sheet 102: The proposed primary clarifier and raw sludge pumping station will generally be ,� constructed below grade adjacent to existing improvements at the Durham AVVWTP: Where removal of existing trees is required to ,,,onstruct the new I.. facilities,new trees will be planted to screen the facility from its neighbors. All ., N grassed areas will be restored, a 1' 2. The general location of play areas and common open spaces-- . L i � • °1 No new play areas or common open sp ac es will be added with this project g•t. i .. .11., fit' .I 9' 1 r 3. The general location of existing and proposed plant materials-- • Y y. • In order to construct the new primary clarifier,raw sludge pumping station,and 85th Avenue improvements, a number of the existing trees located on the property will be removed. New trees will be planted as required. ,:t v :: 4. Location of underground sprinkler heads where applicable-- Underground sprinklers will be installed for all landscaping within the fenced •D area. Areas outside the fencing will be irrigated in conjunction with the existing, land application system. 5. The landscape plan shall include a narrative which addresses sail conditions, and erosion control that will be used— Soil conditions are described in the soils report incorporated in Appendix A. : :. Erosion control measures are described in a previous section of this report. F. SIGN DRAWINGS , i Entry signs will be placed at the new access drive to the Durham AWWtP. Signs will comply with requirements of Chapter 15.114 of the City Code. 0 Itil • ` l m r •12. . . . . . . . . : .. . • ..., . . 411 ...,,.. , . . . . . . .,. . :.... . .,. . 4 REQUEST FOR COMMENTS ,.... ,• . . ..-,. , .. ',.!,•... .,, : , . . . , . . TO: : . ./ ::.-# , . ' iii-ILL','.. • ..ka.„4A, DATE: FEBRUAl_tY24_MAL_ ••, , ... . _ :. ..,. . . f . , . .-• _. • - FROM: Tigard Planning Department' I .,,,•,:. RE: CU 89-01 UNIFIED SgWERAGE AGENCY Request or conditional uoe approval of :: .. ,:-.. .'• a minor modification to an ..,stablished previously approved conditional . . . . use. The applicant propogies to construct a new primary clarifier and -,-,,• !sludge pumping station at the Durham Wastewater Treatment Plant located at ',.,.• DurhaM Road. the property is zoned I-P (induotria/ Park). LOCATION: SE .,..., ,;........ * , Corner of Durham Road and SW 85th Ave. (WCTM 2S1 1DD, lot 600). Attached io the Site Plan and applicantiO statement for your review. Prom information supplied by variouo departments and agencies and from other . .. information available to our staff, a report and recommendation will be ..• .. prepared and a decision Will be rendered on the proposal in the near future.• :,..., If you wash to comment on this application, we need your comments by nomm • 12,1_221124 toil may use the pado provided below or attach a separate letter ,. . . , to return your CemMents. Ift911AttLjanaleiMO dijI2,z_/, Q9AD'i ab v te ._, . , please phone the staff contact noted below With your comments and confirm your , , . . Commente in Writing ao oden ail poseible. If you have any questions regarding y ;: .. , thio matter, contact the Tigard Planning Department, PO Box 23397, 13125 SW . . . -, Hall BlVd., Tigard, OR 97223. PHONE: 639-4171. " .N., . . . , . • .• STAFF CONTACT: ....--,... . , . . . . . PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY' ' . . . , We have reviewed the proposal and have no objection:at to it % „, .• ,.,,,. . . , .— „• ,,,.• _, Pleads contact . . of our office. ,..- refer to the encloded letter. .., . ., . .,, r Written CoMmentet . . . .... . . . . _ . • . am.,..mos... Anwaini N— . , •. , - .. 4.,... ....rm. wouresrammo , . ., '' '' 01 . t....... ... ......0.11, ' —' ''"viwyriareii..... .1.........,..,.........NNirmistorerror.......,.................e....m............ . ' ,. L.' • i2 . ,1 'I ■ .'., ' iii ';': loonanINI • .......... ............*. • ' ' Ea ' ,.. ..1 _. 0 ' _,, , ..„, •. , " . " .. . ,,,,,,...., lir ., NaMe of Peridon COMM:anti:1g Ammor446 .... .// . 1r . ..... . ....... _. , .. ..v . . .. Phe NUMber: Ail , -, . : * ...1' -. .,. .._ ,,. . . , ,. .., . - . . . . , . . . . . , - 1.. ••• :',' , . ,_ ___ _,....... ___ ..,.„.....,_ ,„..._._. _„ ____ .,.... , ,__ _... . .., _....,.. ., . ,.. ... ._. _ , . . . .„., , , ,. . -. . - ., .. .. . . _ . . _ . - . . - ',:. •. - ' -- - , , . . ---:-.,- ---- . -- - . . . , , .. , _ . '1 . -' S . . , , , ' r P 41 ill MEMORANDUM CITY OF TIGARD, OREGON W 0_ TO: Ferry Offer, Assistant Planner Respond DY .. ,...�..., ... FROM: Gary Alfron, Transportation Engine ..r For Your Information Y.• 1 41 DATE February 21, 1989 I , ,,, ,Sign and Return f. . SoJ :CT► CU 09-0i Unified Sewerage Ardency il ' ► Comme nts,: r. This application is for a modification to the previous conditional use application which was approved in 1908, This modification involves the addition of facilities on sate, The prior app1ication required improvement ,.. .4 % ., and right-of-way dedication to 85th Avenue. plans have been submitted for these improvements and arc currently being reviewed by the City, ,, •� Findings„: :b : 1. The current application is similar to the prior application in regards to ,. the requirements for improvements to fronting roadways, The entire treatment plant site fronts onto 85th Avcnuc and Durham Road, The - , proposed improvements are located on the south end of 05th Avenue, Lnprovemcnts to 05th Avenue have been provided by the prior application. The improvements to Durham Road were errantly overlooked due to the location of the improvements and the large size of the site" , 2. aurham Road is a state highway and is currently a paved 2 lane roadway, The current right-of-way is 80 feet from centerline, Typical right-of-way is 45 feet from centerline for the ultimate development of ; Durham Road, Half street improvements, typically required on fronting roadways, not , . ed recommended for Durham Road for the foliowinr reasons. The Major Streets Bond includes Al the installation of a sr.gnal at Hall Boulevard and IA ef` improvements are not designed ned at this times o Durham ha►n Road, The, ,J therefore, the required improvements along the site"s frontage are not - known at this time. Also, near the east end of the site, a vertical,- ., to , curve exists which requires reconstruction to---- ++ ---eti �', , `-n�1T) '"fi' -6 w 4.-tandtrds, Therefore, half street improvements are not feasible at t tis y time. do`P r y, . 1 .. .. „ . . . ,. . .1 . . . , . .,. . Jerry Offer February 21, 1900 ' V - . Page 2 .: • . , •. ,,, , ..• . . , • ,. . .., '- ' Conditions: ,.. ... 1. Additional right-of-way shall be deeded to the State Along the Durham . .....,' . I■ ..I Road frontage to increase the righ;.-of-way to 45 feet from the -7-1----t— centerline. The description shall bt, tied to the existing right-of-way ,• • .,. . . centerline. STAFF CONTACT: John Hagmam. . . 2, An agreement shall be executed by the applicant, on forms provided by the ., City, which waives the property owner's right to oppose or remonstrate . . . - against a future Local Improvement District formed to improve Durham , . . ,, . . , Road. STAFF CONTACT: aon Feigion. . • • . • , . • ke/9117D ...• ,, 411419 . -) -7,--Zee'VZ. : e.. . • teMiiitte L Zi , ) 0.* ,.. ,.. , . . • ... ,. . . , . . . . .. . . . ,, . • ... , . . . • .,. . .. a. . . 2 . , . CO , ,.. ..., ' ...I .. ', . ,• ,. . . . . ' .4 . .. . . , • A r t ''M♦ r Ili . ;. ..„.... :: t b, REQUEST FOR COMMENTS ip. p , 1 .� TO: 1 DATE: FEBRUARY FROM: • •d. Planning '• • 11.. RE: CU 69-01 UNXFIED SEWERAGE t• y r conditional uste a•• r minor modification ta an established uee. The applicant propoees to condtr (5) 1„,v _ CONSOUDATEDPIREANORESCUE _ /y` sludge pimping t .v. - Durham 1!. !.14;511: i ,1 A Corner r Durham " • •' •' i • Stivortcm H Whim.-Km ' ,:,'rT — Attached ia the Site Plan and applicant's s ocimm...smigmvirov0.8,—, d :.':: : .1..'-':7!, information aUpplied by various department "4"4"w"m""°°* .• information available to our staff, a re; t a. s 1 prepared • • • ._ rendered I • C i : , , . . . If you wieh to domment on this applidatiOn, 4765 S.W.Griffith DriVe PA Ook 4765 • C. r' • • • • •• , tR .. i. pleads) r• • c the staff centact a z• belew with P.yOUr comments and confirm • . . , comments in writing au Goon ao pod:Able. If you have any gustation° regatding , Y : thia matter, contadt the Tigard Planning Department, PO Box 23397, 13125 SW . •, OR 97223. PHONE:S . 639-4171. °!: •_ 'n STAFF.r.. ,..•.• 1. JERRY °. } ' - - PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: . •, t6 r. A 4 • it AI L '4 1,... r 3 '''':''t 1 C�/ ...-- -)2S 1.' -.0.--h2 r • 1 r 0 . -* -. , , , - . ti , 4 c:..)0 c., 1 1,L,e,b4.4 (,..A...... ., III 1Name of Pereon Commen - ng. . . .. _ . : a•A r 147 - •• • 5+ • t: - . . " 1 ��..;, . • _ - Y • , ... ..•, •, it .:' .. ,- ;',.. ,hn ... .. _.. ,. .fr .. . ,...�.,. 1.,.YO 4 • , . ., .. . . 110 411 , Y, ,,, : , N I REQUEST FOR STS \' ' , ,... O• vim',, �FIi. ..� 14 Y+ Ir°"'" .. DAM'v-.rw,.+r R '°'rswi M�srirr...u'^'.i:.X• FROM: Tigard Planning Department • y RR: CU 89-01 UNIFIED SEWERAGE AGENCY Request for conditional use approval of a minor modification to an establisaed previously approved conditional , ' use. They applicant proposes to can; new.truct a ne primary clarifier and sludge pumping station at the Durham Wastewater Treatment Plant located at `' .:i:,'. Durham Road. the property is zoned I-P (Industrial Park). LOCATION: SE Corner of Durham Road and SW 85th Ave. (WCTM 2S1 1DB, lot 600). ti, Attached is the Site Plan and applicant's statement for your review. From information supplied by various departments and agencies and from other information available to our staff, a report and recommendation will be prepared and a decinion will be rendered on the proposal in the near future. '.,t' ' .• If you wish to comment on this application, we need your comments by 17.. 1982. YOu may use the space provided below or attach a separate letter to return your comments. f ors are b:4l able _,es ys . 01 ,bov, d tee• , your s regarding please phone the staff contact noted below with our comments and confirm our comments in writing as noon an possible. If you hay any question g g thin matter, contact the Tigard Planning Department, PO Box 233970 13125 SW ' Hall Blvd., Tigard, OR 97223. PHONE: 639»4171. STAFF CONTACT: T!P QI+"+'o __ _..,r ' /'. . PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: , . We have reviewed the proposal and have no objections to it. , . Please contact of our office. r Pleaoe refer to the enclosed letter. Written Comments: e Y 0 t HJI 9 ;�: Name of Person Commenting: _. Phone Number: ✓ '1 t „.. . . . . 1.. ,, . , , , •. • 1 .... 410 vi$4. .. , ,. 44.44.40,s,•,,,,,,. ,.., i- 09 . .• ..t... v 4,0 ..... .. , .. , ,4 , ..,4 .1 . RAWEST *All =gab= . 1 . . '.. ......".. ,' . . . . ,, . . :, • .. 11 . NI, TO: 4 . ,.. , k4OL• ' -,.. --■• - pc,— . i :• FROM: Tigard Planning Department .'-.; . 1 6.. .. , RE: CU 89-01 UNIFIED SEWERAGE AGENCY Request' for conditional Use approval of .. _ . a minor modification to an established previously approved conditional 0: .. use. The applicant proposes to construct a new primary Clarifier and sludge pumping station at the Durham Wastewater Treatment Plant located at * -; Durham Road. the property is toned I-P (Industrial Park). LOCATION: SE . . _ Corner of Durham Road and SW 85th Ave. (WCTM 2S1 1DD, let 600). , .,,. ,..• . , .. •.. . . •,• I•*,, Attached ia the Site Plan and applicant*s statement for your review. From , *H . , information Supplied by various departmanta and agenciee and from other Th . information available to our staff, a report and recommendation will be . . ,.---. -•'; . ., prepared and a decision will be rendered on the proposal in the near future. . , If you Wish to comment on this application, we need your ComMents by ., • , . 22,"1.20. You may use the space provided below or attach a separate letter , to return your comments. If_yLoparujqIable .to_rbxhye_AL__g.tte _ . . please phone the staff contact noted below with your comments and confirm your contents in writing as soon as pot:able. It you have any questions:4 regarding , thia matter, contact the Tigard Planning Department, PO Box 23397, 13125 SW . ..., . • ...,, Hall Blvd., Tigard, OR 97223. PHONE* 639..4171. •• . . ., STAFF CONTACT: JEREY, OFFER i, ,. ..„ . , .....---,- .. :,' : 2 - PLEASE CHECK THE FOLLOWING ITEMS THAT APPLY: :. . , . ,• ..• . ,... , -. •;,.. . Ila.„. We have reviewed the proposal and have no objections to it. . : .... ..• : .. % . - . . % Please contact __- -- Of our Offide. :.. .. Please refer to the enclosed letter. .... XXX Written Comments: „ .'' -------- . , While we hame....11t2a121esLtionp•_:_totAigpsLop.o, jaias r , . ix • been no contact or_coordination with thevAtgx_diatriat_og_1110„,,,,nged8 •,., .. of USA1. 0nt— ilg,s=1: 11Itgqgptim '4'.., ,:- -,, , 6 .their reiuirement': . . .. .., . . . . . . , • .... ,dir _ ,e , _ __- . .. • .,:... .. - i,,,' ./ ' . . . mi Robert t antee Wane of Person Commenting: . . . .. . ' Phone Number: 659-1554 . ii..........44.4.. ...................n..444.444.4...04r4=4.4kmeiramo. ' 1 •• r . ■ 4 , . .. , 1 . .. . . . ' ' . {• ..' . 4 ' I. !!._ . , ,..,.„.:. . 411 PROPOSAL DESCRIPTION . ,• • i,:.,,,. : „:, .. . -,.. VILE NO: CU 89-01 .. FILE TITLE: UNIFIED SEWERAGE AGENCY • ..... Ti. APPLICANT: UNUIED SEWERAGE AGENCY CMWER:SAME -,--• ,:.. . 150 N. Vint Ave. ' Hillsboro, Oregon 97124 . , , REQUEST: Request for tstadettbagiblitastes approval of a minor modification to an established) previously approved conditional use. The applicant '., - - proposes to construct a new primary clarifier and sludge pumping station at the Durham Wastewater Treatment Plant located at ? DurhaM Road. the property is zoned I-P (Industrial Park). - ... %,. ..: . . 0 . • .,•,. :. ,., .", . .. , LOCATION* SE corner of Durham Road and SW 85th Avenue . ,, ,.. , • (WCTM 281 11 DD, Tax Lot 600) ... k :. ,; • :.- . ZONING DESIGNATION: /.4. . . , . . , COMPREHENSIVE PLAN DESIGNATION: LIGHT INDUSTRIAL , .. . .• . , NPO NO* 5 . , - ' - .. , . CHAIRPERSON* Craig Hopkina PHONE: 639,-5823 (home) • .. X STAPP DECISION PLANNING COMMISION DATE / / TIME “ .. : . . _ • . , . .. . , . . . . . . , --NEARINGs OFFICER DATE TIME , CITY COUNCIL DATE ,..../„ / TIME t_ ........ . * — ,!', ,,: ,!! . '.,• . X REQUEST FOR COMMENTS (dee attached hat) RETURN BY 02/17/89 ,•,. ,,,, ,.,.., .. ATTACHMENTS: VICINITY MAP LANDSCAPING PLAN .•, :* NARRATIVE ARCHITECTURAL PLAN .. jt SITE PLAN •L ' • , •!,..:, Liu . STAFF CONTACT PERSoNt dotty offar . . I: ... PREPARE FOR PLANNER APPROVAL: : ,.;.• ,,,,, , „. X ADVERTISEMENT ,,, TIMES //LP . OPEOONXAN ,,,,.../__/.., •. : . 5 is..... NOTICE TO PROPERTY OWNERS TO a MAILED • — . ..... /LETTER OP ACCEPTANCE OF APPLICATION / ..... lane. . CM. NOTICE TO btcb - ATTACRMENTS: . • • LH . . • ...i .• ... ' . ' • . , . . . . . . . , . . . , . • • . . , . , , . , . , •. • r _ • ,. , • ,: , 1 . . .. . . . ,. . , ... .. ,.. .. . . . .. . ., 0, :.,., .:„... .,, • 0 ‘ .,. .,.... ., „ „- ,...,, „.. . , .:,.,„,y ..„ :...: ,.. .,?..,.;,. , .. _,.. . . . J • ' UNIFIED SEWERA.GE AGENCY OF WASHINGTON COUNTY . . . . , . . .. „ . . .. . , . . . - , . January 10, 1988 A ., , , i.';'' Randy S. Clarno ' • ... Development Services Manager CITY OF TIGARD . . . . 13125 SW Hall . .• • . • . 2igard, Oregon 97223 . - . . ... •. . . RE: Conditional Use Permit Application--Minor Modification . . ., Durham Advanced Wastewater Treatment Facility , .. Primary Clarifier and Raw Sludge Pumping Station . • ,4 . . .4 Dear' Mr, Clarno: . 4 .. . . , . . On behalf of the Unified Sewerage Agency of Washington County ... . . . . ...,, ,, , (USA) / enclosed are the following application elements in support•. . of the Agency's request for a Conditional Use Permit--Minor .. - .. - ,../4 Modification, to construct a new primary clarifier and raw sludge H. ..4: : pumping station on property currently owned by USA lying adjacent . . . -. . ,, , n to the existing Durham Waste Wastewater Treatment Facility. . . i1, A. Application Form: 1 copy .. , ,..•.. ,,, . , B. Owner'S Signature: On application form - . H::... ' C . Title Transfer Instrument (Deed) : 1 copy • , . . : ',4 ' ., D. Applicant's Statement; Statements from our consultant, • , . CWC-HDR, Inc. , and their subtonsultants are included in .. , ..4: the "Supplemental xnformation" enclosed herein. , , • . _ • .. . 4._ ... B. List of Property Owners: List enclosed with .. %. : • „., . "Supplemental Information, " •'' .,. F. Filing Fee: Enclosed Is our check in the amount of $80. .• ..... The site information, site development plan, grading plan, and architectural drawings (prelimina:71) have been incorporated into .• .. : 15.5 • :! our Site brawings and Supplemental Information. Ten (10) copies of this information are submitted with this application for your review. . . . ..... . . al , ...., ., We thank you for your attention to this matter. Should you have questions, please contact Dennis Lively, Division Engineer for .. • USA, at 648-8621. . , . . . . : •• . ,cerely Si' . . • .. .. •• UN\J7-1/4616V\ . . . .. . , . . • Oa y r, RLsahmer . General Manager , Enclosures . ..., . , ._., . . .. . . . , . .. . . . . • ..„ • :, .. . . . . . . '166 North PIM AVOW*Otooni 302 HONbottOregon Vig4 Pliono:603/648-8621 . , .. ,, 0 • .... . ,, .. ,.. , ,„. .. . " ..... , , , I .,. ... ., . . . . ‘ ,., -. .,L ..„,, •, .. . , . . ,.. . - - , . . . . • ,.. .. .„ . , ....... . .,.... . S9 .,:„... .. ... „..„.•.. .. . . � t t• 4° . r., e , APPENDIX A • ,. . . : 0.. z r!. .,'— SUBSURFACE EXPLORATION 1 i AND t: F ^aenx ' ; '.p GEOTECHNICAL ENGINEERING G REPORT r': .j. 1i= e. DURHAM AWWTP d m/ , • , IMO t. rr.�ee `. • u ae�. . I 1 • I • , 4 ADDITIONAL GEOTECIINICAL INFORMATION , . . S6 W ' \ . I DURHAM AWWTP EXPANSION NEW FIRIMAIZY CLARIFIER #3 ,i, ... . , , , WASHINGTON ASHINGTON COUNTY, OREGON ,• . , „ PREPARED FOR: . CWCHDR . . . 1 1,- , 0 0-4472 . NOVEIVII3ER 1988 m . CP 11,11 ...I ilizA 'NM RITTEN110USE-ZEMAN & ASSOCIAT ES • , . Ceotechnical & 11ydrogeological Consultants Riimiiiiiii i-,, . , . ' . , .. , ■ . - 0 411) :. . . •. , RzA RITTENHOUSE-ZEMAN&ASSOCIATES, INC, .. . ,. ,. 1 wur vkvji Geotcchnical&Hydrogeologieal Consultants ,. ;or , ' . ."Itos 8050 Se W Cirrus Drive imdlise., Beaverton, Oregon 97005-5939 ., , . I immuldlibirmom (503)644-9141/PAX(503)641-2820 ... . .. : December 1, 1988 0-4472 . . I ,. CWC-HDR . • . . . 300 Admiral Way .• , . Suite 204 ,,, Edmonds,WA. 980204127 . ' .. • . .• . II Attn: Bruce Willey ,. • SUBJECT: ADDITIONAL GEOTECHNICAL INFORMATION .,.. ..... . I si DURHAM AWWTP EXPANSION,NEW PRIMARY CLARIFIER#3 .,.! •4,, IN WASHINGTON COUNTY,OREGON ,. ., • ( . . I Dear Bruce: . Submitted herewith aro the results of our subsurface geotechnical exploration on the subject project, -- '1 - :..: I 1.0 PROPOSED PRnJECT i. As we understand it, the project will consist of constructing a new primary clarifier slightly northwest of the two existing primary clarifiers, Tht design of the new structure appears similar to the existing ones, a . , , . . .., concrete ring structure 120 feet in diameter and 12 feet deep. - . Our original contract dated April 13, 1988, was extended in order to provide additional geotechnical , , 1 information on the new Primary Clarifier #3, This report has been prepared for exclusive use by cWC., HDR, the Unified Sewerage Abency, and their agents, in accordance with accepted geotechnical engineering practice, H;;ti. 2,0 SUBSURFA E EYr1 ._..._QLWA_TIDITIONS I We drilled two additional borings(B-16 and B47) in the approximate locations shown on the attached Site Plan. The borings ranged from 21,5 to 26.5 feet in depth, and were logged by an experienced geologist . from our office. Borings B-7 and B-8, drilled for our previous exploration in April, 1988, are within the area of the new clarifier and were used for supplemental information. Logs of these four borings are attached at . the end nd of this report . . ,, I , r . „.. ti 4. te • CWC-HDR,., 0-4472 ` December 1, 1988 a e 2 is ,'.r \, In general, the nail% ' ails encountered consisted of sandy slits and fine sands with occasional thin layers of silt and gravel. This area appears to be covered by a layer of fill 10 to 15 feet thick. The fill consists of , - 1 reworked,fairly well-compacted native soils, f6 rn t; Throughout the entire site, ground water was mostly encountered as perched zones over beds of silt and , the soils got wetter with depth. No ground water was encountered In any of the four borings drilled within ' ,:: . ''- the area of the new clarifier. It must be mmembered that the last four years In this area have been near- drought conditions. We have had rain in November, but not nearly enough to bring the ground water levels up to"normal". Normal winter ground water levels are probably around 10 to 15 feet below existing grades, occasionally higher during wetter than normal years. b' 3.0 RECOMMENDATIONS (. 3.1 Grading -The soils are fine-grained and moisture-sensitive and will be difficult to work during the wet , J 5. %• ` , ill season, During the summer months, or when fine-grained soils can be properly compacted, the native ; soils would be suitable for re-use as structural fill. If wet weedier grading is attempted, imported ,,.,:anular ' .. material should be used for fill. Compaction of fills should be based on the modified MSHTO T-180 designation, Fills should Ka compacted to the following specifications: • . I Fine-grained soils 92% Granular materials 95% IUpper 8"of pavement subgrade 95% ;• Landscape&planter areas 85% • a. 1 . All fills should be brought to near optimum moisture and compacted in eight-inch sifts: Optimum moisture `' for the native soils is 15-17 percent, but in-place rioistures are currently running into the 18 to 85 percent I range. A sheeps foot roller should be used on fine-grained soils, and a smooth drum (static or vibratory) t roller on granular soils. ", Prior to placing fill on existing soil% or installing slab or pavement base rock, the subgrade should be proof-roiled with a fully loaded 10 to 12 and dum truck' Any areas that pump; weave, or a p y yard p y p appear soft or , muddy should be overexcavated and replaced with a clean, granular mae:Niel, compacted to 95%as noted 1 above, r, I ,r i CH 4 .i' S+ ,. 0 , 1 CwC`HD \ 0-4472 'r December 1, 1988 Page 3 ""J' 3.2 Settlements.The native,fine-grained soils on this site exhibited moderate to low compressibility in our laboratory tests due to the high percentage of granular material in the soil matrix. Settlements 'ielow . 1;, •, moderately loaded structures or below fills less than five feet In thickness should not exceed one-half of an . inch,and settlements should occur fairly rapidly. . I . Typically, clarifiers exert very high uniform loading over the entire structure, as opposed to conventional ' foundations that exert high loads over a relatively small area. For this reason, settlements tend to control • design. The most crucial time is during, and shortly after, the initial filling of the tank, Total anticipated ., , settlements below this particular structure may well approach two-inches,with differential settlements of as j. much as one-inch. 3.3 Foundations-We do not currently have precis©structural loading information on the proposed facility, -:ii `.•, but we do not anticipate extremely heavy loads on the ring wall. For design purposes, an allowable . a, e�, bearing pressure of 2,500 pounds per square foot (psf) can be used This assumes that the foundations are a minimum of 12 inches in width, 18 inches below adjacent exterior grade,am are founded on firm soil. ,, The factor for resistance against sliding in the native soils is 0.4, a passive pressure of 200 pcf equivalent fluid (including a factor of safety) should be used. .• • 3.4 Drainage As noted previously, winter ground water levels can get quite high in this area, and downward percolating water has a tendency to perch on layers of silt or clayey silt, If the clarifier is emptied for cleaning or mechanical maintenance; the bottom could be subject to uplift pressures. For this reason,we recommend providing positive drainage below the structure. The drainage can be in the form of a 12 inch blanket of free draining,well-compacted (95k of AASHTO T- L 1830) crushed rock. A subdrain, or series of drains, consisting of four-inch perforated pipe packed in drain 2 'b' rock, should be run below the structure and tied to the drain blanket to remove w r o water, alttiibl y, Ito Wilke.the effluent line backfill ao a stubdraln=by plaoln+ the perfpr od pip i1.0 the bottom.of the tretioh , 3 and using'cle$rrerueh d gook titbitafitillittiV1014000,0Ne would be glad to work with you on details • after We have seen a copy of the plans, a .b i t' 3.5 Utility Excavation -The native soils on this site can stand vertically for some period of time, but may • I collapse suddenly and without warning, especially if seepage Is present, Also excavations below the water . ,� table can create a quicksand condition, For these reasons we recommend that any slops greater than fr�ur a .n rfeet In height be slued,or doped at least 1 H:1V If seepage is present,flatter slopes may be necessary, r • `i a r. * r' d '+ V.,, . ,'nr�,..�, •!;, f..'.... .. . .. _,. ,.. .... ..�." ."... ...if ... ... ... . .. ,.. ,. .. 1. '. u . .. ... •. .. .. r J . 0 n , ' CWC-HDR 0-4472 December 1, 1988 Page 4 A, if any of the excavations are made below the water table, the contractor should be prepared for '" ,,r J . ai ' dewatering. Both the shoring system and dewatering system should be contractor-designed items. A , , . , i ,.;. " n The recommendations contained in this report are based on information gathered during our current field and laboratory study and our study in May, 1980,and on preliminary design Information provided by CWC- ., HDR. We have not yet received a final copy of the plans for this project We recommend that we be provided an opportunity to review the final plans and specifications when they become available. This will allow us to determine whether any change in concept may have affected the validity of our 'r;,'• recommendations,and whether they have been correctly interpreted. in order to correlate preliminary soil data with the actual conditions encountered during construction, and �'; x .: to check for construction conformance to our report, we also recommend that we be retained for 4 ,'; construction observation of'stripping, grading, compaction,foundation excavations,and other soils related portions of the project, *:"' ,,., ` , I We have appreciated working with you on this project, and look forward to further involvement, In the ;; ,,, interim, If you have any questions or comments, or have other criteria you wish to be addressed, please .0, contact Mr. Rinne in our Beaverton,OR office, a Respectfully submitted, 7.' off• a`4 "'•, RITTENHOUSE-ZEMAN&ASSOCIATES,INC. OREGON , -1� W. RINNt RIC1 Rb 4 '; ..1...: / ,/ .2„,e,„,„2'../..ke.,........ ,� r Richard W. Rinne,O.B.G. c''. ,; Terry N. Cray= , V110/4, 0 L eA , f i" _ h ./ u OREGON ".il jedid, 30:# ‘::. 'ktitct*0 , ham• 3 , . • , . . , ,,. . , , . , - .. , . , .................,.,,,., ' . , ..,. ,, ,„...,. ....•... '• . • . . • . . . , . •,. .• ,. , . . * 0 ., .,:,.... -... SOIL DESCRIPTION ,,.„.1 . ° ' 2%LI: 4 STANDARD • ...' • ,-, - .j, ., ' .. frq . v. •.'...,'. . ,5 § tz g PENP:TRATION RESISTANCE . '. 1 BORING NUMBER B-7 0 4,4 • A Illors per fet4(140 lb.hareraariOr 4wsop) ; , . ,,• ., At lo. , . • --,t. ' gl 764 3 P"' •0 20 30 40 •,. . . • %,... . 1 1 t ! I 1 1 • • .•, . ••.144.1.4,41••tre wl•i•itariolot•.14,414+4•• 1•1•44114•ottelowt•1414 , : • ..,, 111111 Stiff, damp to moist, medium brown . •,+,,,i,..i..i.••1•4,.•iti...•±.1•1.1.• .1..r.,1•.r• ..I...i..r.i.• .M. ..oi1.1.1.•,••tsto•toloton*4.411411..••••rol.•10*).• oollo•to•• .,..,. .• ,,r..'..•'',,. ,,,,, ... ..., , sandy Silt to silty Sand, layered (Fill) . 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' . , ..., l' • ..• .. , . • •••••1....4„.O. avoto.4.4•10,ii4.41.46.14•11 ii iiii,464.6 Iii.ii,444.4 ,i ,411•. .., , I 1. 1 I II 1 f I 4 4 4 ,', . , . , ,J.,411,414,441•ii.efoi.rail,•WhoitaTioli* ,i'D•••I./pi •ii•(••••1•4•1e,,' ..• .., . ,...., •,,L...i...4.4..„...,,......14.,O4Iiii 444.1.6:44..1.1,44.1444 4,••■1414444'. ooil,,.1...i..4.1.. 44:44,i4,41...44414411.14,. .'.. l'a ' :. -36'•• . . .. ,... 4.4.i.t.el, e• 1.1.1•14to 4.11:411:14 iii itithjii 4 444.4.4,404•1•4 ' 474.1114144440 • 44441.•i iii4444:14:40•ail •1411.114,14 4441.1.4/4i•6'. v, ..1, III" . ' 4 4 . . 1 : 1 1 64 • fl : / il 1 ' ii•il 41.14.••Ili fist•pitil 411.4•44.1.14■•4 ift.o.:14 ••■•41.1.411ali : ••:i•frol••ti t +11•144.irl•4•441444 1.414•Hoi i 444,14•14.14i .,„, .**, 'gilt , , , , _ . .. . . . 4 ' " 1 I _...1..... ... 1••••3011:0•14•4141.1■11•44144,.4 ell i ri•I eihireopolai •'.•••••riri •,, • •,::•; 00 , • .4114141r,..1.:1•Tisla. olii•fivoil,64141•416iii -J 1' ".. ' ' . .... .. . .ar..,.. 4,o1.1.:1,.:„...r .t.i.i. ..ii.orijoir .4- ., •ii,4,44,41.44.'4161•41,4 4wilt adoevilio. ilstitii Pliilitriti eafo+11.147,..,40 . . . .. . ..... . ..„.. . . , ... .. ... .,..,., ....... ..„ . . , . . • i . 1.50 -NO 04 0-44(2 1)-uttliettri SeTP, • • Ir ni,r,", . Lir 0 ii.itpiai iiteirmi imirivJa0 • ill ' p it.iiipiiii iniiiiiii • . . , , iiir 6.6.iiiiiitilitiotiiki 64411014*i o *biehoitiita oonioiot ... „, ._.,,.,.. . ..„. , ,. ... ., ., .... ....,.,, „., „ , . . , . • , §' • •. , 124 titre let thobieirtid innipier ik ith'ilitaiiiii bet i'v4eitivirii • RIFTENI/Ot/S61-ZZWAAI dl s, , . ...:4, ... ,44:rootztrzeg iive . CI iite 3.t.inns iiiiiipisii ,4,4 Iiiiiii, . f, ' .•,,-•wt,• . -... , tar iiikik keiteiti leiol . etiviiire...tisted itoiiriiiiiiiter io 1,,,,,.......'t. . ci oreti loimpiki inissrivi A •• • o i irilsznietei.Up . :',,t y, 7 • idetitii Libiiii.k.a.i/itioiniaiihiii,iiiiiiiii /MO..t is! eirithir Aini . 1 , Mietiiiik, Oreavo 1770404 Itfl. , 4..,..4i 1.4 * , • ., • . , .............„.,,,.. ......,. .,,.., ,,,. . . • � :.... ,. . .. r, ,' 1:.:' ,. . t'.4444 . 4444., .. ., c. . .... „ �,...444,4 .,.• r 1 NIP 0 ,. .d' �' -. 444:,4 .�. .. •4444 .. . ,. r... ..... .l .. .... . .. - .i.. .. . 'i .. • .. , 6444• ,'. . . • 1 SOIL DESCRIPTION fi 9 sTANDARD '1 BORING NUMBER B-8 PEN .b er/e TAE , ' ,�Novo psi faelf>f4o sl,lt�aner/�P•ara�� Y. ' Pa� •i 10 .0 "0 40 ea ' •,• .4..1.4.4.. . 1 •1•e 1.1••1 1 1 1r• r°•i1,.1 1 6.440• ;.r1..'.r, Stiff, chain medium brown sandy Silt •sr r)»r :•±: x: rr :::1:1. .• , ••r .I» •• • .I••4414 4.1•••• •.I.w .r1.♦Ir '•.• :. • Y it •444 r1•474•41r r•1•444•4•w r • «••.r•r'.1..1.••Mr-••.�.•Ate . r , i illi, layered with silty Sand. (fill) 1 . / 1 ii 1 ii 1 .,�, •4+.1.4,..•r •.?..1..rt•1 •14...1.4 4•{.wrr•i••.4.144. \• ' •1 • Ir•Y ••;..r.:-...• / 1 • 1 1 1 ► 1 / 1 r•4«W.hil .rr1a dr•3•dn•wWr ot•rw• •/•«:141•b• •rh / • r ••tr r..dr•. r.14.L•:•....r.••.•u•A.r4.f • .•.I.rdrl.r:ww.. :64.14 y,M! ..ZiY-1 641.4 r'.gw1,•.r1r• ••w'•3ri;.••r=u1i.r.Zr• •a• .f ,. Jjii�•�•; �' 1r.�.rH••.r •-4..144. !}!}j'' 4.• .Li.. f'. • Y• 'Li arr ri••t•r�»r. •�r�r�r1•a'r M1 a r.yr•�r• i=r-�-I"w�.i»j.•4•r w.br�. ' ., / 7 / 1 �, 1 1 0 1 / 1 1 . 1 1 1 1 1 e rj.i,r .•�.i iryrt. r.•.g.rjr••y..+r• •dr.srj♦, ..4.4..1..;.• 1 1 1 1 i 1 1 1 I / 1 . 1 ° 1 �, �•f''- �.4414•►:44.44!►!r�A•�•A«41••i�w►r•1•Yd•• rl«wi.a1♦►Y r•�wA«•►r/rr • .4.i..4.I... ..,4-1•4.•r•;•.i-••�..., .1rr1,1.i..1••.4.w.tr•Zi�r• 1 .4wr.4.... •..4•Ir M•«•• ••4•.M•n. »∎4444 I i!r 1 1 1 1 11 1 1 / 1 1 1 1 : 001 ` •.rww»Y• rr..r•rr•• i• .1 1 1 1 r4-.Fr.t-•Ir• ...r► r• rI 1 i 1 / _1 •j 1 1 0• �••1 / : 1 t v alio,•ir•t• •n=•=wife••..4•:t••-•S•• w••s Y •r r• •••:•s••►•1.• , •`; • .�••.�..r .{...1......=.•i•du r i+{ ..{�r.`4044 r'. W 1 1,. 1..� ! 6sti.,.i r• r1-":;*:1i•alr. e �YU�i./i1F i Y . rd•w Y• r`•r}• i r}•Y•�•;rr; lob ■1 1 L. 4-•.� ••44•I..e•• 4- '. 1 1 1 3 ; : •--, t4• .• d �,•� • i1r.r�r r}.•r. i 14.44 •w1•�•.�.�pw if�.b�.4,.�1 w1rw�0444r 1. Dense, damp to wet, medium gray brown ; •• 1•i .•• ; II •4••11•ri••••t•.i,.I•d•r•.•4.4.4•;••.Y••∎;••4•»,i I. 1.• 1 . Sand with layers of silt and fine gravels. `i':`:i'�:••••.1.••;.•6;:1.•�.:.. .Y:j:.i. ..br.3..• Y y,r• •try•, 64•464444444• •44.44 f.4 rrr.d••.YN• 1 ,1 �1 1'•1.6 r .•1r 6.1.4•1•41. .64.41-.,•r•• •-w;w:.:;i .4.4.3.1.; Bottom of borehole at 21.5 feet. !* , 1 , �• • ; r , • y -34•6.i••.r•J, ••Y{«a.w ,yrj•y•••••• ••••I•0jirpn •i•,•,••1 1. 1 �..wl.... 1 666666 = 1 1 1 ! '1 1 1 1 •1• . a rwlr.t-.r•••}•d.•1 .i• -••1r.�•r!. •1•.1.1...1.• •••�.-1 1 1 tt 1 1 1 1 i 1 i 1 e 1. 1• 1 1 1 .�. /•1�w•►r Y .. d•r•T1•-•ei• rr .1.:.li1•1t•• 1 1 I }} 1 ,.,..,. . IN 4.Ze.1.••••Y r.`r4p. 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Yy4Y ...:.16466 iii J 1 1 1 • 1 Cii 4444.-4444 •.. •'r.1. • •644..6 ti • •e,••»�Y:i•i•L16�•w�Ysi i.�J tl1rY�i' als i / 3 7} • ,, :L,:, ••I 4,41•• • •Y'6.••r ,Y...r•d•i..• 414E•j•w,i YY..1▪1•'r 1" • ..., .,.,:.. ., , ., .. .. it.•1.14•■•••1•.•1::a.1i•Nrr••1}r 1. •14..11•r1ii Y.1..;•tilii �a LEGEND 0-44712 Durham S. y `� ffiIf•0 ""' TJ1 Y .L: D'° *palm p 0striplwi ptmhod '' r It 3.0"0..+ometn'iariee�i aaa,phr e id twirlurA� eomieipt 4�SOTS; INC. _.. . 1•l mil`, 0 nh+1r.al saieWef� is R1oL Irma. -- , e ' • , ter► .tea �IT!.�'Nf.��C! .. x•04 i� u 1• : • 0 df W M).sting rsn p)6r' Q :awn".wsilal+iiara►�•ilon � l lad l L' rt.®m�:fmAle o 0•� eicr ilp Oral.eauA s aalorro�l j 1•/CJ� i al►otaterr/a9Aoo ioa6 raoliyrafrr Y Ave a it dFr7 0/7.110 tart .- ... ., .. ;' ,.., 444,4. .. ., ,. .., .. -, •_ 4444.. ,„ .. .,. 4444 ... ,., ,. ,,., ... _ .. „ Olt .::..... .. ...... .. .:.. 4444 . ii • . . ... .......,.., ,6 ,.,•., .. .... ., . ... .. .. . .. , . .,,.,.., !...•.....: . , .. . . ..., , , ..... ..,;.. .. ... _...,... ,.... ,. .. I • . ,...'. .:. . •. .,., .1 • ,, , ' .. . • ••••■•• , ... . ; 1 ' •'f ".. 1 rilli ., . ..: ' . ', ..,• . ' ,:.: PRIMARY CLARIFIER NO 3 i.. ,;'.';/.;i4:,.....,,!' ...,,, . • 13li .'; . .. .. ...•.' ,, ..'' ,. '•■ ',:‘. i ,.., . • , ,,, 1 4. t B-16 .. m n . . . . ,. . .. , • ., . ,. 4P ,. .. . . , 0 (--- ) .. „. . 47 .. .... . , .,, .. . .,,n... .,,,. .r. ., .• (...jiac, I, •, ' .4. ' '• ' ', ,. . . •. , k .,„,r) .. • . . 4• . • / r, ■• ■ , .., •,I t: , 1" - I ; & .. ;., ..„ •! '. ! ..'• . 1 1 .■ r , ■.'I..•' ,.,‘ , . 4 I ,. I , ' .,j'1/4\ ., .. it . . , . ' 03 ' • .' '.,; • ' C.9 ' '• i...1 i • DURHAM AW-WIP NEW ,CLARIFIER #3 *40 .. .., 6-17 tiakcii NO: A APPROX. .. . ,•-. 4...., . A LOCATION , .. ,. ,„ . ... •. ...•. .. . , , . . ., .., w ,eo .4472 , RITTEN11011,5E,ZEIVAN& • ... ,:. " . e .-- ...-7.-_------___..., ASSOClAtES0 INC, . riedly.,.:Viteg by Ceoteehnied1 Conililitatitt8 . 4 .06.-t. .• ,, ' bate NOV 1066 , . .. . 111111"IIIIIIIAL, , SOO..5:1R Cirriin Drib Femmegffinmiesse , '•: ti, ...-:, ; Scale . 3 el!2°31: ' Bevieeirioci,°Avon 97001t .., ":•,, c.) STANDARD ,- ... ..... , F ' SOIL DESCRI 1 . ION Fe) q SE PENETRATION RESISTANCE . • Pi g. 1. A Mows per foot(140 lb.hantnatr/30"dmp) . . . , pa. 1 ORING NOB 16 6 al...... 4) 0 30 40 , IIIIII , • — _II fil 1 . , . • ._ 11111 Stiff to medium stiff,4ry,brovvn,sandy SILT, • .. Iii I . IIIIIIIII."... .. . .:.:. ....: lot t,race fine gravels at hve feet depth.(FILL) a .—,... . . pri . ., - .i.,.... . . . . • . ,, , •*:*1 . 111 111111 III ''''. • JIM 111 al . . . • . ',I 111 , • . 1 111 ' El 1111 :.. I' hi la • i ' 1 .. .I , • . . .... I ■ 1:111111 1 1111 1111 1 1111 „, ., . ... . _III _4 .. 1 1 a . , . r..:,,,,,!, efl • , ,,..., 1, . . ,,11111 Loose,dry,liht brown,fine SAND ,, .,, .,,,, ., , .3 ',4. „,,,,, .,• ... grid ...... . ic . 'MIM r. .1 . • . , . . .,, .,.. ;,y2 ,„,,,,,: -,.,.1 •-:::11 I: ill 111110 ,, ., ' "‘ .■ •• 111111 •,,, ,.. ,1 ' • , • '•.40.4.1 py *". :1111111111111 II I 111111 . . ..,.....i...................... , , . . Stiff,moist,brown,SILT ..,,,. , . .. 1 , . ni 1111411:xlii 111111 11111,111 . , . . 1111111:11 iii ...IN MI I. ,,,. ' . , t ..,. 11 iliiiiiiiro 111 , • . Medium dense,dry,light brown,medium SAND ..,, . .-,..i, T :,:.,, alli vvitis occassional fine gravels •,4, • y,, 0,1, •,'l',...4,,. 1111 - ,, min 1 • 1 a H. . . lo is ...... 1111111 4, ,". r . •••• •• 111111 ,*, ,, I . ii k .,......., IX...... . . , .7 : ,CI , ,, ra NI ii-a - 4 •. ,•• I .'-''c''..0:'. t" SW II 1111 — II . ill II MI . k,,4 ,14,1 N 1 . . III 1111 Will.: '-• - 11. .. . X XX:XXX tlx:ii a , i 1 !girl - . _ in , . IIIIIII . .• ..11111 - -1 . . ,.., 1 — mil 1111111111 ..,., •11 , milli ilifiliiiiimaiii II a .., ,. . 1 1k ■ . , . . . . 1 1 2.04 0.D,spill spoon sainpkr p Sampler pushed DURHAM AWW1CP EXPANSION E3.0A an.undisturbed sampier 8 t maiattird content 04472 0 Orsb sample interval * SAMple hot l'eCOVerd L 0\ Laboratory/chemicol ';.v.: Water level titietuitian R Z A RITTENHOUSE-ZEMAN&ASSOC. -/ anaiyala 2 Static Water ievel GEOTIECIIIliCAL CONSULTA14TS Piestrneter Op 8050 IP*.CIRRUS/AM I e_ 11(------Liquid limit iigiftWiti0.4 Olt. 07005 , Atterbtri limits: ‘e.... ".---•tiettiral Ali.content (50j)64‘9141 Plastic limit . , i., .. t STANDARD ;» SOIL IDESCRIF1'ION 0 ;� S PENETRATION RESISTANCE .BORING. , • .''.': . tg, [p��■/�� ....:-.1, a A 10 Blows per foot(14O lb.Dritrrmtter/�3O' drop) 20 30 w..n Stiff to very stiff,damp,browrn wyitls =' ■ IMIIIIIIIII .`' y mottling,sandy SIFT,oassio>snl . . . . . fine gravels 1 I , 1 : II 1 ,r: '' — 0 ' . N , :lilt . .MI1. . , . ... ... . . -.'. l'al. 1110111 ill a , • . • -. . sou mi ... • • ■ 0 ' !ha'� , �� ixwiw.w.wMWi..W_.w.NW.,.,wMUwwww.»..W.w..WwwJY••i;_w{w•..wUww.w.i.i...J.wr,...w.w.rww.Ww.+wJ..._."w.W w.".x. �•t 1 ,._a .. i:.r aR ., Medium dense,damp,light brown, •„,y.;,t,,,,,�.7.,,1�jj. to 1 . . :In fine SAND ;;;;,.'::4,1 ' :till litild - i .- , , . . ., ... . ,,,,,,,,;,:. ,„ , , •.` � ... v:34YidLL117�NRL Ii .•1 w«ra • ',, IIiII1IIh!iiIII •N do i i• 1 ...r rr ..r•rJ..M rrurr.tl...r i.r l..r r,..i..frwr�. 'i 1 .• •.5 1 I Y..w.V •Mi+r.r.ir.•/I.r„f.r Yn. .,..,•.I rN[ +1; W w.,"• I! iih1I!iNaar. rvIedhrm deu e,dry,light brown,Medium SAND e� ,..W w._. `th�ceosston�l fine gravels ..•,. :.� J1»' ";��:, 111111 11111 I u. 1 1111, . . .,,,.,4,, ,,,, .. . . . ',,;�J;..: .. pl I. ,• . • . . .. . . , . ,4,,4...,,,, i1!:9iIIHIIIIlliihI, , o M•:iiiiiIii I ,lr Ir• r": N.•M• , •w 1.1 yJ1.,,.r r •,In i • • ' •[ii• MJi11- N w • JIFiFijIII1IIIFE±Ni f.i•Ur I Y, + 111 ..•IrM IN, W/ w.w N S•' N■14W■ . • •..� xM wi■x .r ” NN Nr•.• N.WII w.r•Iw•U•W[,.,1 h•, pi r1 JW +" • •+ •i•r.•M IN.W rii•U rM.11Y w..w Ur 1.MY•N. w'" N.Jr . f". .. iN../w..N 1w•w Ni••N. w ../•i1 .N i r•iN 1•.Na h N.w/•iW.•..x r /Ni " Ir NI.i• , • ' . T a0'O.D+spia spoon gam�l�r' unmet�, DURHAM A'VVV" EXPANSION '• 1[ air'O.D.urellalurbcd eeniplrr �i t moisture content 0,4472 r • ' � G Crab in*intend � ��1 Labornlory/chcriicel Sampla hot rcc errd r.wl hoc fcvcf pucl uelbn R Z �i, II ' N OV sz zE MAN&As soc. /i !V 1 G imat ,t0N U,I1N'tt . , eialya tiiitle level el j , pmiitier lip S CIRRUS E Liquid limit T U Aticrber Midis: etU I Waller cymlani 5 9 4,,,j. ,., h n SRI UNIFIED SEWERAGE AGENCY OF WASHINGTON COUNTY, OREGON N tic AWWTP ,,. DURHAM A NEW PRIMARY CLARIFIER AND • RAW SLUDGE PUMPING STATION nit r .... N.: CONDITIONAL USE PERMIT MINOR MODI'1CATION ..i i co y December, 1908 r 0 . f •n • I I. . . . , 0 UNIFIED SEWERAGE AGENCY • CONDITIONAL USE PERMIT •w MINOR MODIFICATION • SUPPLEMENTAL INFORMATION 1 December, 1988 A. SITE CONDITIONS 1. A vicinity map showing streets and access points,pedestrian and bicycle pathways, transit stops and utility locations A vicinity map is provided on Figure 1, page 2, of this report. Existing access ' points along 85th Avenue are identified on Sheets 101 and 102, No pedestrian j or bicycle pathways currently exist along 85th Avenue. No transit stops are known to exist along Durham Road or 85th Avenue. Existing utilities currently identified are shown on Sheets 109, 110 and 112, 2, The site size and its dimensions-- :;1 R The portion of the property owned by the Unified Sewerage Agency to be impacted by this project is shown on Sheet 110: Assessor maps identify the parcel under tax lot number T2S R1W 11DD 600. Total acreage is approximately 50,4, 3: Contour lines at 2-foot intervals for grades 0 to 10%and less, and 5-foot intervals for grades over 10%-- Contour lines at 1-foot intervals are shown on the site drawing at the subject property and on adjacent lands, The general topography of the site is gently sloping from west to east, Elevations arc based on U:S.G,S, datum, • genera! location o • 4� The g of drainage pattersts-- No well defined drainage exists on the site. Surface drainage follows topography in a west to east direction, Drainage from the subject property ktil J discharges to the Fanno Creek drainage area. 4.„,-? 4,"' AIM ii 1- ■ •lyre r " er....m,,,...,..,........jeL,.e,.....................g..a...T•ytommtmmewamm...Nu.jllLwinMUMIOWII inswillsOnia muThmonmeme Nowa gull ..401\ . , • '"'r, 2S , • , M ` ' , I y I,.�T' R, ,' : ••' PORTLAND - DEAVERTON HILLSDALE • . ~ '"""moo.. 4 BEAVERTON. •217 j 99WN . -'-a 4 SW SCROLLS FERRY '� -,-LOWER BODNES t'' ,.� �� FERRY RD TIGARD '� . . SW HALL BLVD ZINC CITY 6 CARMAN DR •. SW DURHAM RD DURHAM AWVV`TIP 85fh ...�-- ,: . FACILI arms ,. �. �yirrh"b r. t . yy��rr ,, �, r -� r . L„-----"s„) w ti �w~rte '"--TUALATTIN RIVER . ''., ,. . . DURHAM \ • �. •SHE OOD XICE �,.�,� • '` :' v;. ' UPPER BOONES • /.4 . FERRY RD--°"' '"'" '‘.` E ---99 W c41 ```.•. r r ' { . «'rr • • • ' • P1GURE ' DURHAM AWWTP PHASE I EXPANSIOU VICtNi 'Y MAP • r . 4 cWc-HDpt, INo. . . . . .. . .. ... . . ... , . .. ... ....... ... . . Y 0 0 , 5. The general location of natural hazard areas including: (A) Floodplain areas(100-year floodplain and flooding)-- Improvements proposed on the subject property arc not located within the Tuah'tin River floodplain area. The identified floodplain elevation is 126.0. (B) Slopes in excess of 2596-- - . •� The subject property does not have slopes in excess of 25%. The predominant slopes on the subject property arc less than 4%. (C) Unstable ground (areas subject to slumping, earth slides or movement)-- No unstable ground conditions have been identified on the site. A copy of the soils report for this project is included in Appendix A. 7. `' �, (D) Areas having a high seasonal water table within 0 to,14 inches of the surface i for three or more weeks of the year No areas of high seasonal water table have been identified on the site. A copy of the soils report for this project is included in Appendix A. (E) Areas having a severe soil erosion potential-- No areas of severe soil erosion have been identified on the site. A copy of the soils report for this project is included in Appendix A. r n, (P) Areas having severe week foundation soils- ca 4 No areas having severe weak foundation soils have been identified on the site. A copy of the soils report for this project is included in ea Appendix A. , i, 5 �' .. .....iF... .k. n • • r 4 , a. 6. The general location of nature,resource areas as shown on the Comprehensive ,Plan map inventory data- • µ No known natural resource areas such as wildlife habitats or wetlands exist on the subject property. Drainageways and wetlands existing south of the subject property will not be impacted by this project, • 'l, The general location of site features including: ■ (A) Rock outcroppings- , X • '' No rock outcroppings were identified on the subject property. A copy • of the soils report for this project is included in Appendix A, (B) Trees r)tith 6-inch caliper or greater measuring 4-feet from ground level-' .t. Clearing and grubbing limits for the proposed improvements are shown on sheet 101 and Sheet 102, Clearing and grubbing limits have been held to a minimum, while permitting sufficient area for construction of the improvements. The following list identifies those trees on the subject property, and on • • t,. the dedicated right of way of 85th Avenue, which will be removed as part of this project, { • p a au& p5. otioa. 2 12 Inch Pine :•:.,. 2 8 Inch Pine 3 8 Inch Maple _. 11 6 Inch Maple to 2 8 inch Alder • Tree removal will be mitigated by planting of trees on the subject +< property during clean-up and restoration of the site, -4. y' • • • f , 0 0 . n • 8. The location of existing structures on the site and proposed use of those structures-- ,": `:,M ,, Existing structures on the subject property are identified on Sheet 101 and Sheet 102, Structures will remain. This project will add a new primary clarifier and f-'• ••c• raw sludge pumping station which will be connected to the, existing process Y. - • facilities with minor modifications, 9. The location and type of noise sources on the site or on adjoining property such as V traffic ways, mechanical equipment or noise producing land uses-- i The existing Durham Advanced Wastewater Treatment Plant(Durham AWWTP) is located on the subject property, Noise sources at the Durham AWWTP are `; r b , ' limited, To the north and west of the subject property,light industrial activities • , are being conducted, A new headworks building will be constructed across 85th Avenue as permitted by the City of Tigard, The lands lying south of the subject . property are currently undeveloped. ,•- .4 , • n Noise levels at the proposed improvements will be controlled to no more than 85 GI inside the raw sludge pumping station and 65 dBA outside the pumping , station, 4.• A A,` 10, The proposed ventilation and odor control-- The ventilation approach at the raw sludge pumping station is to provide fresh •• It M -. •. '. outside air to the relatively clean areas in the building and then transfer this air through succeeding dirtier rooms until it is finally exhausted through the ; ~ ^' . # odor control tower, - '' This project will also include adding odor control facilities to the two existing primary clarifiea and to the new primary clarifier, fir The odor control unit is a high pressure, mist type unit having a 10 second detention for odorous gases from the primary clarifiers, raw sludge pumping , • F° station, and influent and effluent boxes, Odors will be oxidized with sodium t 1111 hypochlorite under a pH adjusted environment using sodium hydroxide. The exhaust air from the odor control unit will pass through a mist eliminator an exhaust from the roof of the raw sludge pumping station. Sodium hypochlorite k • 4 YP, .�,'1.t4n. , l • • ' 1 r and sodium hydroxide will be stored in 1,500 gnIlon and 500 gallon storage tanks, respectively, with vent and fill lines o>N the east face of the raw sludge pumping station. Manually set, piston-diaphragm pumps will meter chemical flow to the odor control unit. • v' 8. SITE PLAN 1, The proposed site and surrounding properties-- The proposed site is identified on Sheet 102 together with surrounding properties. Improvements to the subject property are also indicated. Pipelines .,• to be constructed and/or relocated are shown on Sheet 110. < „ .', � 2. Contour intervals--• ' • See previous response, item A.(3). New contours are shown on Sheet 102, 3. The location, dimensions and names of all: , .: ' (A) Existing streets-- Existing streets in the area of subject property are shown nn Figure 1. The subject property is adjacent to the 30-foot dedicated right-of»way , . ,ti ; ;: of 85th Avenue,Sheet 102 indicates current exiv,ing street conditions and proposed improvements along the westerly boundary of the subject property. ! (B) Proposed Streets-- As p p ar t of this s project,additional right-of-way will be dedicated to 85th Avenue. An additional 30 feet will be dedicated along the east side of 85th Avenue and an additional 10 feet will be dedicated along the west :, • side of 85th Avenue. The total dedicated width of 85th Avenue,westerly of the new primary clarifier, will be 70 feet. • • Improvements will be made to the curb line along the cast side of 85th • Avenue north of the primary clarifiers to the current access drive to the -6- 1"L • 10' Durham AWWTP. Along the west side of 85th Avenue, adjacent to the proposed new primaryalarifacr,85th Avenue will be improved to 3d feet • • in width with curb and gutter on both sides. At the south end of 85th Avenue, the full width improvements will be discontinued south of the • new plant access road to avoid damage to existing trees in the right-of- 95 0' way. Pavement will be extended southerly to tie in current driveways of properties owned by John and Sally Thomas. 4. The location and dimension of: ', r (A) The entrances and exits on the site-- 4; qt . 5 A new 30-foot primary access to the existing Durham AWWTP will be constructed at the southerly end of the improved 85th Avenue. The • t „ existing entry way to the Durham plant to the north will be modified !` 'o5�u anil• 'p as shown on Sheet 101 as part of this project. • (8) The parking and circulation areas-- Employees of the Durham AWWTP currently utilize parking facilities in "r t' front of the administration building. No new employees are anticipated to be hired as the result of this project. • (C) Loading and service areas " '1 he service area to the proposed raw sludge pumping station is located Y, at ground level together with the MCC/Control room. Odor control \,° equipment and pumps are located at the lower level. Operators attending ' p:' this l` ground level east side and vra, • an facilaty will enter at the grou (east � !k dorm the � u interior stairway to attend the lower level equipment. to Pedestrian and bicycle circulation.if app No pedestrian or bicycle circulation facilities currently exist along 85th Avenue. As part of this project, an 8-foot wide sidewalk will be Constructed from the existing administration building to 85th Avenue and then north on 85th Avenue to approximately 300-feet south of the _ M existing main access to the Durham AWWTP. -7. • • R y ^ h t • 1+ •d Y1 i1.9+ (E) Outdoor common areas, 41 applicable-- . No outdoor common areas, in addition to those already existing, are proposed in this project. 11 r N: a' � (F) Above ground utilities-- ® Potable Water--No new water connection is required for the proposed primary clarifier and raw sludge pumping station construction. is Non-Potable Water--New 4-inch chlorinated effluent pipeline to be constructed to the new facilities. Landscaping to be irrigated with treated effluent(underground installation), Some relocation k of existing irrigation piping will be required. a. Natural Gas--No new gas connection is required for the proposed primary clarifier and raw sludge pumping station construction. Alum and Polymer New pipelines for alum and polymer feeds will be constructed to the new facilities (underground „:T ` installation). �y sti Electrical Power and Communication--Electrical service and communication facilities will be extended underground from the existing facilities at the Durham AWWTP to the new facilities. Y „ The existing overhead power lines along 85th Avenue will be moved to the east to permit construction of roadway improvements: 6. The location, dimension and setback distances of; . ... (A) Existing structures, improvements and utilities which are-- G 4 di. x n �..�; �• i... AYµ `°' �. j , .' o (1) Located within..25 feet of the site and are on adjoining property-- Existing structures on site and on adjoining property arc shown on Sheets 101 and 102. All structures located adjacent to the ; ' subject property are setback greater than 75 feet from centerline of the new 85th Avenue improvements, t `v r . y; 2/� D To Existing structures to remain on site are setback greater than 75 feet from centerline of the new 85th Avenue improvements: (B) Proposed structures, improvements and utilities on the site-p The proposed facilities arc shown on Sheet 102. All new structures will ..% be set back a minimum of 75 feet from centerline of the new 85th Avenue improvements: 7, The location of areas to be landscaped-- f Landscape features include low growth ground cover,deciduous and evergreen trees and grass planting. All landscaping will be irrigated by underground sprinklers using non-potable water from the Durham AWWTP: 8. The locations of proposed utility lines- ]Proposed utility lanes to be constructed as utility part of this project within the 85th ...:,4,: Avenue right-of-way are shown on Sheets 109, 110 and 112: Pipelines and • improvements constructed outside the 85th Avenue right-of-way are also shown, EL . E 9 The location of mailboxes-- No mailboxes will be installed or relocated as part of this project. • -9w •b .r" 10. The location of all structures and their orientation-- The location and orientation of all structures are shown on Sheet 102. Structures are aligned with existing facilities. a''r 11. The location and type of outdoor lighting considering crime prevention techniques-- :`. Outdoor lighting, similar to that existing at the Durham AWWTP, will be continued. C GRADING PLAN 1. The site development plan shall include a grading plan at the same scale a.' 'he site • analysis drawings and shall contain the following information: (A) Requirements in Sections 18.130480 and 18.130490 of this Chapter-- 4•a Requirements as set forth in the above paragraphs are described in the * previous text. .nr (8) The location and extent to which grading will take place indicating general contour lines,slope ratios and slope stabilization proposals- 0. 4 ' M Location and extent of grading to be included in this project is identified on Sheets 101 and 102. In those areas where the slope of the final surface is 2 horizontal to I vertical or greater, the slope will be protected from st erosion with a biaxially oriented net while grass surfacing becomes " = established. , `t from a registered :, statement engineer+ .supported by factual data (C) A staterrie Cd er Silt substantiating the validity of the slope stabilization proposals: and that all problems will be mitigated and how they will be mitigated-'- A copy of the soils report for this project is included in Appendix A. • 1 -10- .r tit f;, n • D. ARCHITECTURAL DRAWINGS 1, The square footage of oil structures proposed for use on-site-- The facility to be constructed in this project is a new primary clarifier and raw • M , sludge pumping station to add to the treatment capacity of the existing treatment plant. The majority of the structure will be located below ground. „ That portion above ground will contain mechanical, electrical and control equipment. Sheets 402 and 403 provide lower and upper plans of the proposed primary clarifier and raw sludge pumping station. 2. Preliminary elevation drawings of each structure-- ' }'*�'1.ry + .;: Preliminary elevations of the new primary clarifier and raw sludge pumping station are shown on Sheet 401. The exposed structure will be constructed from cast„in«place concrete. The structure will conform with the architectural concept used on the existing treatment plant. E. LANDSCAPING PLAN 1. The general location of fences, buffers and screenings-- Security ences will be added to the existing fencin g as shown on Sheet 102. The y g g proposed primary clarifier and raw sludge pumping station will generally be • constructed below grade adjacent to existing improvements at the Durham 4 N. AWWTP. Where removal of existing trees is required to construct the new facilities.new trees will be planted to screen the facility from its neighbors, All ?`' : ; grassed areas will be restored. 2. The general location of play areas and common open spaces- rt ita No new play areas or common open spaces will be added with this project, au w -11k 410 ,, 3. The general location of existing and proposed plant materials-- '• In order to construct the new primary clarifier,raw sludge pumping station,and 85th Avenue improvements, a number of the existing trees located on the property will be removed. New trees will be planted as required. " 4. Location of underground sprinkler heads where applicable-- . Underground sprinklers will be installed for all landscaping within the fenced area. Areas outside the fencing will be irrigated in conjunction with the existing land application system. , 5. The landscape plan shall include a narrative which addresses soil conditions, and :' erosion control that will be used-- Soil conditions are described in the soils report incorporated in Appendix A. `e Erosion control measures are described in a previous section of this report. .s'I F. SIGN DRAWINGS ,a Entry signs will be placed at the new access drive to the Durham AWWtP Signs will comply with requirements of Chapter 18.114 of the City Code. 1 kl 1 e I l .4 '1 1141 rrClr • , 2✓t Y1 • l,' .12- II i 1 t• r{ t, • I q. , . '1 ,J , ,+,+ ' , ' ,. " ,t''. ' ,a ' 1'• .. . ' . •", '� , ' I1T'LE INSURANCE COMPANY - •. ° . I°,jafF{iar,,131--WAAftIMt�01/p,,,, ..- /1) ltartA►til"brw rum L.losllANb,OP ,` '.. :Irorl$o ... ,.:....x 716�j »c:�-4- .'."-•- .._ . 1 r1 KNOW ALL MEN 1W TMESE PRESENTS, Thor Andres, and Harriet A. Saltwick /^•V n� , l• , ,herelnniter called the grantor,lot the consideration hereinafter stated, r'.y r 1 to grantor paid by Unified Sewerage„Agency . ofWishington County ” ,hereinafter called the grantee, I� 4 ' does hereby grant,bargain,tell and convey unto the said grantee and grantee's heirs,successors and assigns, that II '"r t,v .' v certain real property,with the tenements,hereditament:and appurtenances thereunto belonging or appertaining,sit. I �r. •''• ' uated in the County of Washington and State of Oregon,desctibed as follows,to-wit: , ''S ' ,, . ' A tract of land in Section 13, Township 2 South, Range 1 Weat of the Willamette Meridians ! '.:'.it ',,,, ` Washington County, Oregon) more particularly described as follows: .ry'I14. ,r ti•' '11• 7r�'.�G�n�i�1'Va,•l,i r•Beginning at On Northwest cornet.' of Section 13 Township 2 South Range 1 best and ,"., 3w F i B ! P i B i ,�:.. ' ;'r • running thence South 562.5 'let to the Northwest corner of a certain tract conveyed to t y C,'r��;�s Marion M.Maxwel1 et ux, by deed recorded in Book 275) page 501; thence East along the "''i*,' t' t�n�'<'' ' 1 I'. \& North line of said Maxwell tract to the West litre of a 30-foot roadway) which 30-foot '',+'�, iy' • ' roadway is described es being 31 rods East of the Weet line of said Section 13; thencet ,;r�" .h{;'• North along the {Jest lino of said roadway to a point nit the North lino of sand Section �� '"?� 131 thence West 31 Rods to the place of beginning; EXCEPTING 'THEREFROM the following +,tt k"w ai. `! described tract; Beginning at the Northwest cornet' of Section 131 running thence South ,"!•,`ay,a;' a7�an said section line 262.5 feet; thence East and A ' ;i' B ! parallel to the North line of Sect,+h ;� - �.�:��',:..' 13, a distance of 356.5 feet; thence North parallel to the West line of said Section 13, I .F4 , '.;. �) ai distance of 252.5 feet to the North line of Section 13; thence West to the place of ;f4 i 'x hC beginning. filti4°":,',•',r•x,: SUBJECT TO t Statutory posters and assessments of Unified Sewerage Agency and rights of the :ublias ' in d to an ort ion i rr c c , rn►xit 4csirtlo t at r, s e Ins • !1t '`;'t;'' x ant p 1'l Q�wt)tl��t same Unto1lie acp es e n ra or,�hc rtw��ra, I }� ,/,f�l., To Have and to a d t to same unto t e sat grantee Gtr grantee's Mtn,s ccessort end assigns forever, F f�; rwid y: /�f 's ' ilsAt�.�,,,rh''' t/'^ And said grantor hereby covenants to and with Said grantee and grantees heirs,successors and assigns,that ;• tic:, *;else 1 ,, ,. •'', a• it grantor is lawfully doted in fee simple of the above granted premiers,free irons all encumbrances "`I'#y, �"�,?f a • r ,R�yt''s y ' I� ; 1011111:;444;!).. • . I'll''T'' '''' i e ••'''',. '1, n. i' and that p}i r y,.y,i•''I• grantor will warrant and forever defend the above granted promisee and every part and parcel thereof a 4alntt the law- '�f f;,;�,t yt" 'p la)claims end demands a/all person.whomsoever,except those claiming under the above described encumbrance., It;i �`' ,•' •" The true and actual consideration paid lot this transfer,stated ih serail of dollate,is$ 34,000 , ' .,'T,,,42,';;7 . 2)14..000, itr'-eo/Wa/- r feenti.Pa oW.iit).+oi+eainrlooti0.r,risew+y.rep.rip=.e..ua►.,.gitee,..drupsoreiuwd.w'Alolr+la ! t';'',�� ,t.',1'iv r r tit.0.mt .,c aruidesolla.anctionta.,04,1a:lt).T. "/ !_A",,,,{ • 14.11.,;,v F ,;'r' ,,;,, in cohitruing 11.1:deed and where the corded so requires,the singe/at includes the plural, tl ,px 4, ,:�l: ' WITNESS grantor's bend this 7 T day of J ice rnbk' ,14'11 I. ,►r+� '.I -czt.4,4,-,4tez. ... , _�, i • ,'' Andr w SaltWick i ,,;;a��, •t, ,et Harriet A. SeltWick t�l.•A, li M CM?I'' STATE OP OilEi3ON,County of WS31rt'elb«, }ed, j�t'ed.ibte )f 71 . j t' ,. ,.. Personally appeared the above named Aiia.t44 s'al1v,14. e4 "AO la1 4 Spa/�w',,,� tw ,;ii)a4 'f ' i. i' 'fit`•h,,t•^,�. ,• itiai it ktiowledged the loregoing instrument to be i'k1 e l i'. voluiita.y act an d, I ;f'' ,,il ti;;,n4•;r+ ,, A.f j: ,, helots met.4" I ,j^,a,rt.t '4,'. (Op chti,SeAt.) ,1+'" Notary Public for Oregon :au °�;a� '"�,�%j iA t; ,, ,.r My cbtiimiseloh tepitei ' +.v t:eni,,.wiles#isl,i •j'0,'-P'p-1. " N0i(d�fed,OMo.je 4.i•nil a.t it q),if e.5 Nria.ili,,,..vii W 1.LN1,bt cc.,,.,AAl,0.4M i.-.item .t.....Nd i rir.t 1t 10+1.1 i.Ml i, v+:,:'$+,i • T ,.. , t .'7ti<u re,a'. 3 J:,, . ri ,•s ,it;n'.•, ';,. 411'1 /�ey p .d"a,''y ' • ` oo WARRANTY DEED OGi,44 .:,�_"'!r~, '. ', '!a I STATE OP OlitGON it ''Fyn'':t •i +ti"' tt!%.K,, • ,h, ./,'_ '' County bt Wa)hlnfrii AN1�Rl li SAt tilClt e t iui •',,.- :t;'i r j),`,� 1 RoeSt Tho nten Director of RicotdS y' r': b,' ;: To 1 r/tJ n..{ be i b E (Iclo e o 1"` )sou i Uie tN,i 9e once4 Itot d tbuni do ,ieb t Con. '.7,;11,..'f,':':•`:,... I UNI iEb SE�IQRACS�ACENCX i.Ati,i,iifievio ih.y11 the elthin Intliumyent of Wing was 1,: T M o A)toiibiHi t' •a nd bock of tut d' •," A5th.IN Sous eetlVi b Foot In ors ' `{ `, dad t , .: tiiliebo .. ',". !, flit Wutici Ne. ,»...r -' arita iltconbINo atfUhN TV u4io r of 4bld"County )i��L ri 1 ;;' flirt INEU,'I,ANCE i= Wlines4 , -`'w.rti`•. t , f COMPANY h,y Bond and tent ofNaed , �' +': • :r rr N ti, p w pp� +,• .,, .•phi` .; .'1• ';• t/k '''°.• • Y t. ii« . • ` r ,i 1 I « fMQ .R C!R r { i '1 ..................7 REVISIONS _ _ ...&'.9_0„ ,. S o 1 .' _. ". .1,..9,..-t .+ 4 , ,4 ..-_ .,-_.. , , ,- . ■ . imi_i ,,,, . . . , ,...: ..... Wile ........11.11............. . 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