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10775 SW GREENBURG ROAD-4 FILE NO. 442-91 GREENBURG RD. - 10775 STR OPN PERMIT APPLICATION - STREET IMPROr MENT/EXCAVATION COPY TO: OR DI NA LCE NO. 74.14 �►I� (WHITE)-FILE f(PINK) (YELLUW)-INSP, ;INSTRUCTIONS ON SEPARATE SHEET) rQI (BLUE)APPL CANTNCY f APPROVED x APPLICATION�NO.. NOT APPROVED ❑ GIIY OI' TIGARD, OREGON FEE AMT.: S PENDING FEE. PMT. ❑ CITY HALL RECEIPT N _—1L'Zl`g`-7 PENDING SECURITY ❑ PUBLIC WORKS DEPARTMENT BY� DATE e / 79 /I - PENDING AGENCY "OK" ❑ Application and Progress Record MAINTENANCE BOND It PENDING INFORMATION ❑ FOR STREET IMPROVEMENT/EXCAVATION ASREQUIREL ANNUAL L PENDING VARIANCE C I EXPIRATION DATE: / PERMIT NO.: �9L_= _I_ DATE ISSUED: l z_`11_��_L .. ,ABY: __ -"�"r'- (1) APPLICATION IS HEREBY MADE TO EXCAVATE FOR AND INSTALL rlr�GJQtA_�lA! -e[' -_-- - /4Bhi�or;n AS DESCRIBED HEREIN, IN FULL ACCORDANCE WITH CITY REQUIREMENTS, P&fw PGsc�*� APPLICANT __ �I Cu►+1 Z �O�U� _ r, 5tj,, 'Djnc�v v✓ilL�_ _ rI NAME ADDRESS �� CITY t �►cvne CONTRACTOR C� �►►]B�_ PLANS BY 9i 4 -"L,4-se A C ] rA0 D9.LD_SEWSS T" Cgn4fr D r#/3.r Po rCf17A vd,=Q& NAME L_ADDRCSS CIT iI t"HH_OO"NW�E€ ESTIMATED IMPROVEMENT TOTAL VALUATION ( COST). S DOLLAR/ (2) EXCAVATION DATA: FOR oFPICe USE! MIN. 0.04 Y S C10 = f 7-4c.— STREET oo/STREET DESCRIPTION _ PROGRESS & INSPECTION STATUS NAME SURFACE CUTCUT CUT MATERIAL, INSTALLED ITEM DATE_ REMARKS/TYPE BY TYPE LENGTHIWCDEPTH ITEM &_QUANTITY- STREET UANTITY —� S TENET N I �— INSPIEC- R TIOM Q G U ESTIMATED STREET OPENING DATE:A3 Z / yq/�� S ESTIMATED STREET CLOSING DATE: Ss�bfs"l ZL2 / Z9 LI E O STREET (3) SECURITY NO. SECURITY AMT.- S ._��aL.,_ CLOSED SURETY CO.: _ y FINAL K J[ G�+ (ASH :] _ BOND INSPEC. 3/� ` /�•�p►-Cw tt� rt1.;V (4) PLOT PLAN: INDICATE SITE PERTINENT PHN SICA , SPECIAL PROVISIONS /CONDITIONS: 1 FEATURES; EXCAVATION LOCATION AND EXTENT. Iq \C`c U- 1,14CAV-1 �3► �e", #Ir✓S`t 41-11 Z 11 S e.e Iat e %0r LU 41, j_ 1 �WO =Ml a'i'S _ 1 �e`#+ 'L a I Y uP � _-+► - _ - .. .- w w \ -, _�T1UJI�e�` \-CT 2_•3 a]2-JC,IIDCXI W�{ &A rA F, \I ...'_.._ -- - �1— -- j• _— `ai►c+ :\\ti Ctn IA 1S ht bliAll) I L t I Aram 1 I ;3,� f�RS 157.51 - .511 -,.pplle�� (5) NOTE THE CITY OF TIGARD DOES NOT, HEREBY, GRANT PERMISSION TO APPLICANTS TO CONDUCT WORK WHERE RIGHT-OF-WAV JURISDICTION IS THAT OF WASHINGTON COUNTY OR THE STATE OF OREGON. THE APPLICANT AGREES TO DEPOSIT THE REQUIRED SECURITIES, TO COMPLY WITH ALL PERTINENT LAWS AND CONSTRUCTION SPECIFICATIONS PERTINENT TO CONDUCT OF THE WORK, AND TO SAVE HARMLESS THE CITY AND EMPLOYEES AGAINST ANY INJURY OR DAMAGE WHICH MAY RESULT FROM APPLICANTS ACTIONS1- (� 1> GXIS�'1.1, I,I T141nPt I �atMt �ax�I // ysl$est 1. s }F�• tik� be. �rlt�tti.y� r A 1, 1,11\4Xl b CIOM►a.1. tt t APPLICANTS SIGNATURE DATE �P w / Y t .DEFINE:entrct=case->eng definition incorrect ENGINEERING PERMIT PERMIT #. . . . . . . : ENG91-0048 DATA. ISSUED: 08/7.9/91 By: PRIM. PERMIT #. : ENG91-0048 --- SITE ADDRESS. . . : 10775 SW GREENBURG RD PARCEL: 1S135BC-00100 SUBDIVISION. . . . . ZONING: C-G BLOCK. . . . . . . . . . . LOT. . . . . . . . . . . . . ---------------------------------- -- PERMIT TYPE. . : SOP IMPROVEMENTSTS QUANT RATE - -VALUE - AGREEMENT DATE: / / GRAD ARDS ASSURANCE EXPIRATION--- STREET PERFORMANCE: / / SAN SEW MAINTENANCE: / / STM SEW UTILITIES ALL OTHER TOTAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .$ Remarks: STREET OPENING, TO INSTALL GROUND-WATER TEST WELLS WITHIN GF.EENBURG RD & WITHIN CASCADE AVE. (FOR SITE MONITORING) , Permittee: ---- --- FEES BP OIL COMPANY type amount by date recpt 2868 PROSPECT PARK DR. STE#360 OPEN $ 240.00 JSH 08/29/91 216827 RANCHO CORDOVA CA Phone #: (916) 631-6919 Engineer: AI CHA >v"1L(r7Rf3 3. G�aSW c"1� {t U£ r. $ 240.00 TOTAL BEAVERTON OR 97007 Phone #: -- ---- REQUIRED INSPECTIONS -------- Permittee/Agent Signature: ---STORM SEWER-- -- ---STREET----- M.H. & C.B. CRB LINE & GRADE PIPE LN & GRD SUBGRADE BCKFLL & CMPCT BASE ROCK City of Tigard, Oregon AIR & TV TEST LEVEL COURSE 13125 S.W. Hall Blvd. WEARING COURSE P.O. SEWER--- TRAFF & PED CONT Tigard, Oregon 639-4 97223 M.H. & C.O. MONUMENTATION PIPE LN & GRD STREETLIGHTING Phone #: 639-4171 BCKFLL & CMPCT WALK./APRON/RAMP FOR INSPECTION, CONTACT: AIR & TV TEST Carl Viewe #639-41?1 --GRADING----- 9 (office) --REPR'S/ADJ,S-- CONYOURS #780-2647 (mobile) DRAINAGE ----PATHWAYS---- EROSION CNTL. CM OF Z IGARD IMENDMURE RDQT.7EST - '1dr, form is a nndti-use foLm. Appropriate reoeipts must be atczc:hod. Docimentation ; inmi-tant for all txxrposes. Staple docxmientation to form. V114WR NO.: PAYABLE TO: ho �e�� - � RFXXJE= BY: Approved request d(6- Why 10:00 AM to A/P for checl%s by I Friday. MISCELTANDOUS E XPENDr1'(II2ES: ._._- — ---- ---- - Date- Description, Irnvoice No., etc. AccuLuit No. lmrxint DT �U7\7�Ca�_p —I - -_ eM i Pea-►.�,�►t�`�'`�7_-9 — `l1-Z I iog 2-1 cO 711 - _ TWAL Mileage $0.255 - — ----- ----__ APPROPRIATION BALANCE: -- AS OF: --_ _ - SI(MIURE: (Up to $25.00) Section Manager Arch. Agent ($25.01-2,500.00) Division Manages- ($2,500.01-7,500.0o) Dept. Head ($7,500.01-15,000.0o) City Admi-ti,trator -- -- ($15,000.01- ?) Local Cont : Review E3a3rd 1501- November 12, 7.991 CITY OF TIGARD OREGON Mr. John Estrem R.Z.A. 7409 SW Tech Center Drive # 135 Portland, OR 97223-8024 RE: B. P. Oil Street Opening Permit # 442.-91 Dear Mr. Estrem: Enclosed, please find B. P. ' s proposed but unacceptable (original) bond for your disposal . A refund of 90% of R.Z.A. ' s deposit is now forr,hcoming by separate cover; the final 10% will be released when we resolve resetting of the well covers . Sincerely, John S. Hagmn Engineering Technician di/estrem 13125 SW Holl Blvd.,P.O.Box 23397,Tigard,Oregan 97223 (503)639-4171 PUBLIC WORKS CONTRACT BOND City of Tigard State of Oregon #2 SB 100408590-145 KNOW ALL MEN BY THESE PRESENTS,'That we,BP Oil ConlVany,as Principal, and The Aetna Casualand Surety Company duly authorized to conduct a general surety business in the State of Oregon, as Surety, are jointly and severally held and bound unto the City of Tigard, Oregon, hereinafter called the Obligee, id, the sum of Six thousand two hundred_forty Dollars ($6,240.00 40,QQ), lawful money of the L)nited States of America, for the payment of which we, as Principal, and as Surety, jointly and,severally bind ourselves, our successors and assigns, firmly by these presents. THE CONDITION OF THIS BOND ASID OBLIGATION IS SUCH, that WHEREAS, on the day of �` , 19 BP Oil m n , the kri ' "al 1 herein, entered into a contract with the City of Tigard, Oregon, the Obligee a \-for the furnishing of materials, labor and equipment and other- requirements for th f rmance of certain public improven�nts, being located within the City of Tigard,14as to a fully set forth in contract documents described in said contract, all of which.' NOW, THEREFOR , if the Ptincipa.l herein shall faithfully fid truly observe and comply with the terms of the contract a d shall well and truly; to 11 matters and things undertaken to be performed under sai contract and shall pr p�make payments to all persons supplyingJabor and material r any prosecution of Zl a work provided for in such contract and shall �ot permit any lien'or claim to be fil r secution against the City on account of any 14bor or material furnished and shall tly pay all contributions or amounts due the Sta'Je Accident Industrial Fund and all Atributions or amounts due the State Unemployment1Compensation Fund incurred in the erformance of said contract and shall �romptly, as dire, make payment to t1 person, co-partnership, association or corporation entitled thereto of the monies a �ums mentioned in Section 279.320 of the Oregon Revised Statutes, and shall prompt Ny'over to the Oregon State Department of Revenue all sums req fired to be deducted nd Telained from wages of employees of the Principal and his sub- ntractors, pursuant\,tp S ctiob 316.197, Oregon Revised Statutes, then this obligation is to be void, otherwjse Iso erg ain in full force and effect. The total amount of the'Surety's 1 • bilityi under this bund, both to the Obligee and to the persons furnishing 1 ibor materias, provisions and goods and to any other person or persons, shall in no event exc�ed the penalty thereof. - 2 - Provided, however, that the conditions of this obligation shall not apply to any money loaned or ad,,anted to the Principal or to any sub-contractor or other person in the performance of any such work, whether specifically provided for in the contract or not. This bond is executed for the purpose of complying with Chapter 279 of Title 26, Oregon Revised Statutes, the provision of which are hereby incorporated herein and made a part hereof. Said Surety,for value received, hereby stipulates and agrees t'iat no change,extension of time, alteration, or addition to the terms of the contract or to the work to be performed thereunder or the specifications accrmponying the same shall in anywise affect its obligations on this bond, and it does hereby waive notice of any such change, extension of time, alteration, or addition to the terms of the contract or to the work or to the specifications. IN WI'T'NESS WHEREOF, the parties hereto have caused this Bond to be executed in Portland, Gregow, Cleveland, Ohio, this .Lh day of 5qtep mber, 1991. Witnesses: PRINCIPAL(S) BP COIL COMPANY Keith S. Kennedy, Assistant Tres urer SURETY THE AETN_AASUAL'I7l AND SURETY CQMPAN—Y BY Monica Ii. Peres Title Attorn --in-Fact �_� CTTY OF TIGARD EXPENDMURE RE1Q)(TkniQl)�\ stir, form is a multi-use form. Appropriate receipts mist be F.t-tachcci. Documentation important for all purposes. Staple documentation to form. VENDOR NO.: DATE: p ARr TO: �� � �hruSC - G e v" 1 ssc}c, - RI OUF,-' LD BY: - �409 w T--C- eprrw� l35 o Z 4 * Approved request clue Wednesday 3.0:00 AM to A/P for checks by Friday. MIS US EXPENDMURES: Data Description, Invoice No., etc. Aunt No. Amount uc� TIMI SIF-VA) y -'.2 _ 10-ZZe�UO $ X400. n Ssl,lrzv� -.- — - l - -�WIrFL Mileage $0.255 APPROPRIATION BALANCE: AS OF: _-- SIGNAZZT2E: �_---_- (Up to $25.00) Seal.-Ion Manager — -- Murch. Agent ($25.01-2,500.00) Division Manager _--_-- ($2,500.01-7,500.00) Dept. Head. ($7,500.01--15,000.00) city Administrator ($15,000.01- ?) Lacal Contract Review Board /1501F 'A 1 ►y �. � S400 A ,9 wot rC ' a RI7TFNHOL( ZEMAN& ASSOCIATES,INC. RZA ` Earth& Environmental Consultants RECEIVED 7409 S.W. Tech Center Drive Suite 135 Portland,Oregon 97223-11024 OCT 21 1991 r�■� (503)639-3400/FAX(503)620-7892 COMMUN'14 DEVELOPMENT October 18, 1991 6011.401 Development Review Engineer City of Tigard 13125 S.W. Hall Blvd. Tigard, OR 97223 Atin- Chris Davies SUBJECT: PUBLIC WORKS CONTRACT BOND COVERING INSTALLATION OF MONITORING WELLS AT BP SERVICE STATION NO. 1104.2 10775 S.W. GREENBURG ROAD TIGARD, OREGON Dear Mr. Davies, Please find enclosed original copy of Bond #2SB100408590-145 in the amr,_^t of $6,240.00, dated September 6, 1991, covering the construction of monitoring -veils on S.W. Greenbury Road and S.W. Cascade Avenue. Also find enclosed a copy of the signed permit application (permit #442-91) regarding the construction of these weals. Rittenhouse-Zeman & Associates, Inc. (RZA), on behalf of BP Oil, submitted an application to the City of Tigard on Augus: 19, '991, to install up zo five monitoring wells on Tigard City streets adjacent to the sul,ject site. One requirement of the permit was that a refundable surety bond or security check be issued to the City of Tigard covering the full cost of well construction plus a non-refundable fee of 4%. The estimated cost of each well was$1,200.00 1.0nging the total required security to$6,240.00 (5 X$1,200 plus$240 fees). To expedite the permitting process, RZA issued fts check #24153 to the City of Tigard on August 29, 1991, with the understanding that this amount, minus application fees, was refundable upon receipt by the City or 1 igard of a surety bond in like amount. Please have your department remit a check In the amount of $6,000.00 payable to Rittenhouse-Zeman & Associates at its earliest possible convenience. `�' AGRA Fath h Frtvux»manal Crwq • . E fi r 1• I Development. Review Engineer 6011-01 Page 2 October 18, 1991 Please note that the original permit application was for the construction of up to five monitoring wells, numbered #1 -5 on plate 1 of t'ie letter accompanying the permit application. In fact, only three or the five wells have been installed: wells #1, #2 and #4 (now referred to as MW9, MWT and MW8, respectively). Consequently, RZA shall recommend to BP Oil that it reduce the amount of the surety bond to $3,600.00, covering the installation costs of only three wells. If you have any questions or require any additional information, please do not hesitate to call me at 639-3400. Respectfully submitted, RITTENHOUSE-ZEMAN &ASSOCIATES, INC. J" n Estrem, Project Manager Paul M. Trone, P.G., Senior Geologist `7< t RZAEarth ZEMAN& ASSOCIATES,IN(. Earth& Emviron►nental Consultants 7409 S.W. Tech "ter D►•ire.Suite 135 Portland,ni-c,r +7223-4024 (503)639-.,41X)i FAX(503)620-7892 August 19, 1991 10-6011 Development Review Engineer City of Tigard 13125 S.W. Hall Blvd. Tigard, Oregon 97223 Attn: Chris Davies SUB„ECT: OFF-SITE MONITORING WELL INSTALLATION BP SERVICE STATION NO. 11042 11 3775 S.W. GREENBURG ROAD TIGARn, OREGON Dear Mr. Davies: Please find enclosed a completed permit application for the drilling and installation of five groundwater monitoring wells near the Intersection of S.W. Greenbury Road and S.W. Cascade Avenue Described below are our proposed work and construction plans, as wei; as a traffic control plan and estimate.; costs of construction. Work Plan Rittenhouse-Zeman and Associates (RZA) has been contracted by BP Oil Company to rurner♦late impacted groundwater at the BP service station located at the intersection of S.W. Greenburg Road and S.W. Cascade Avenue In Tigard. As a first step in the remediation process, groundwater monitoring wells need to be installed downgradient from the site. In this case, all downgradient well locations fall on either S.W. Greenburg Road or S.W. Cascade Avenue. RZA proposes to drill and install up to five monitoring wells as soon as approval is granted by the City of Tigard. Drilling has tentatively been scheduled for August 22 and 23. The drilling and installation will take no more than two days. However, RZA requests a 30 day window (August 22 to October 20, 1.991) in which to perform the work. Drilling will be scheduled for normal working hours (8 am - 5 pm) unless oti-lerwise directed by the City of Tigard. Construction Plan The locations of the drilling sites are shown on Plate 1. Each well will be drilled to a depth of approximately 15 feet and cased with 2" schedule 40 PVC screened pipe (Figure 1). The casing will be sandpacked below approximately four feet in depth and sealed above four feet with bentonite and concrete. The PVC casing will be fitted with a locking well cap. The well will be fitted with a tamper resistant, traffic-bearing, flush- mounted steel cover according to ctendard BP Oil Company well specifications. A G R A f;f tlH rfNmvnnnnl fxn;l, `� ti M Development Review Engineer 10.6011 August 19, 1991 Page 2 Traffic Control Plan American Barricade will provide traffic control services during all times that drilling operations are In effect. Only one drilling site will be occupieo at one time. The following traffic controls will be instituted for the various drilling locations: 1) For drilling of site #1, both the centermost southbound lane of Greenburg Road and the adjacent left turn lane (Into the Shilo Inn motel parking lot) will be closed. Southbound traffic will be re-routed Into the curbside southbound lane of Greenburg Road. Southbound access to the Shilo Inn will be provided via a traffic flagger. 2) Fcr drilling site f, e, the curbside eastbound turning lane of S.W. Cascade Avenue (south of the traffic islard) will be closed. Traffic wishing to turn either north or south onto Greenburg Road from Cascade AvE nue will be routed through the centermost eastbound lane of Cascade Avenue (no+ih of the traffic island). 3) For drilling Site #3, bcth the curbside eastbound turning lane from Cascade Avenue to Greenburg Road and the curbside southbound lane of Greenburg Road will be closed. Traffic wishing to turn south onto Greenburg Road from Cascade Avenup will be routed onto the centermost eastbound lane of Cascade Avenue to the centermost southbound lane of Greenburg Rcad, 4) For sites #4 and #5, the centermost southbound lane of Greenburg Road will be closed with southbound traffic routed onto the curbside lane of Greenburg Road. Given the large amount of traffic on Greenburg Road, bath flaggers and flashing arrow signs will be located on either side of the drilling operation. Hazard warning signs indicating "FLAGGER AHEAD" wiil also be posted, as appropriate. American Barricade will provide all traffic control services in accordance with standard DOT regulations. Construction Costs P,ZA estimates the cost of installing one off site monitoring well at approximately$1,200. This price includes the cost of providing traffic control services by American Barricade. A security bond in the amount of$6,000 will be provided by BP Oil Company by August 22, 1991. However, _given the likelihood that less than five wells wil! be installed, the security bond will be reduced accordingly following completion of the wells. If you have any questions or require any additional information, please do not hesitate to call. Respectfully submitted, RiiTENHOUSE-ZEMAN &ASSOCIATES, INC. ?JEStrkem,lProject Manager Paul Trone, P.G., geologist C) V v Ceps Jai 0 ZVI.- PL,4TE WO. RITTENHOUSE-ZEMAN RZA A SSOCIA TES- IIVC- qm BY Gf ofechnical& Environmental Dote Consultants W-001 scale lmlmmmm� �Mp��RR*�A6'TANT,TRAFt=tC—BEPR11Jta , F��� rt�pV� E' STEEL W�l'4 �VCrz. IN CoNCR�'� LOCKED wz u_cA•P I BELbW C�NG�C�' 6'�ZAO'L i PV CAS%',,A - EM-TbN ITT-- W E LL SEA L 8-1z. C.o�tulL�,c� S«�CA SA P3 l SC-KE EN ED 40 PVL CASiN4 T1�R.EP,u�p EtJb CAP FltiG,r: 1 J TY ��r' AL �n1t l� CIJ►�'�u!_'11oN �E.� 11_ wo. — R1T7ENNOUS£•2taMANQ, � � By O�N EStrt... A SSOCIA TE S. INC. Date .b ��_ 1 �_ _ Geotechnical&Environmen sd SCSI, Consultants CITY OF TIGARD - RECEIPT OF PAYMENT RECEIPT NO. :91-c-168'_7 CF-'FCK AMOUNT : 6240. 00 )ME : RITTENHOUSE-ZEMAN & ASSOC CASH AMOUNT 0. 00 DRLSC ; : 7409 SW TECH CTR DR. #135 PAYMENT DATE 08/29/91 I SUBDIVISION TIGARD, OR 9722::•-8024 I IRPOSE !',F PAYMENT AMOUNT PAID PURPOSE OF PAYMENT AMOUNT PAID STOME R DEPO 6000. 00 PUBLIC IMPROV 240. 00 � 1 REF_T OR►_N I NG PERMIT #442-91 TAI_ AMOUNT PAID - - - -> 62_'40. 00 i.VTEO STATES NATIONAL SANK d 0,.W RITTENHOUSE•ZEMAN & ASSOCIATES ` T�idBfec1 024153 r�.ro.on e7223 7409 S.W. TECH CENTER DRIVE,SUITE 135 PORTLAND,OREGON 97223-8024 24-22 839-3400 1230 038 11ATF Aug 29 91 Al%iOuNT $6,240.00 PA ************* Six Thousand Tao Hundred Forty and xx/100 ************* M 1 HF )R[ CT_TY OF TIGARD 116021. LS311' 1: 1 2 30002201: 036 0103 57611' �-- -_ „,w,w�Y.wWMAes►.or.w.rU�cw.wmrw+afY'�tlM+wb�a.�Y1c�M�'a+KouoW.ew�AV�L�►1caWuavrAaH�NawY/r4a�wtirWYM�Ns+�Ii'arm+wrual�S�MWvw.rw+rrwr�rnwsswuw.w�.wrra...., ..�.-,. ..._..._. .. ? 1 et al!�be a/14f4 1�` �� R17TF-N11OUSE-ZEMAN&ASSOCIATES,INC. -�,— Earth& Envir rental Consultants '`� 7409 S.W. Tech Center Drive Suite 135 Portland,Oregon 97223-8024 f,'. ;. ,J i,; (503)639-3400/FAX(503)620-7892 August 19, 1991 10-60'. 1 Developrn,ent Review Engineer City of Tigard 13125 S.W. Hall Blvd. Tigard, Oregon 97223 Attn: Chris Davies SUBJECT: OFF-SITE MONITORING WELL INSTALLATION BP SERVICE STATION NO. 11042 10775 S.W.GREENBURG ROAD TIGARD, OREGON Dear Mr. Davies: Please find enclosed a completed permit application for the drilling and Installation of five groundwater monitoring wells near the Intersection of S.W. Greenburg Road and S.W. Cascade Avenue. Described below are our proposed work and construction plans, as well as a traffic contr")l plan and estimated costs of constructlon. Work Plan Rittenhouse-Zeman and Associates (RZA) has been contracted by BP Oil Company to remediate impacted groundwater at the BP service sijtion located at the intersection of S.W. Greenburg Road and S.W. Cascade Avenue in Tigard. As a first step in the remediation process, groundwater monitoring wells need !o be installed downgradient from the site. In this case, all downgr3dient well locations fall on either S.W. Greenburg Road or S.W. Cascade Avenue. RZA proposes to drill and Install up to five monitoring wells as soon as approval is granted by the City of Tigard. Drilling has tentatively been scheduled for August 22 and 23. The drilling and Installation will take no more than two days. However, RZA requests a 30 day window (August 22 to October 20, 1991) in which to perform the work. Drilling will be scheduled for normal working hours (8 am - 5 pm) unless otherwise directed by the City of Tigard. Construction Flan The locations of the drilling sites are shown on Plate 1. Each well will be drilled to a depth of approximately 15 feet and cased with 2' schedule 40 PVC screened pipe (Figure 1). The casing will be sandpacked below approximately four feet in depth and sealed above four feet with bentonite and concrete. The PVC casing will be fitted with a locking well cap. The well will be fitted with a tamper resistant, traffic-bearing, flush- mounted steel cover according to standard BP Oil Company well specifications. AGRA E.ren b Er+.�or�.wtal Go.0 t / Development Review Engine August 19, 1991 10-6011 Page 2 Traffic Cor-trol Plan American Barricade will provide traffic control services during all times that drilling operations are In effect Only one drilling site will be occupied at one time. The following traffic controls will be Instituted for the various drilling locations: 1) For drilling of site #1, both the centermost southbound lane of Greenburg Road and the adjacent left tum lane (into the Shilo Inn motel parking lot) will be closed. Southbound traffic will be re-routed Into the curbside southbound lane of Greenburg Road. Southbound access to the Shilo Inn will be provided via a traffic flagger. 2) For drilling site #2, the curbside eastbound turning lane of S.W. Cascade Avenue (south of the traffic Island) will be closed. Traffic wishing to turn either north or south onto Greenburg Road from Cascade Avenue will be routed through the centermost eastbound lane of Cascade Avenue(north of the traffic Island). 3) For drilling site #3, both the curbside eastbound turning lane from Cascade Avenue to Greenburg Road and the curbside southbound lane of Greenburg Road will be closed. Traffic wishing to turn sou'h onto Greenburg Road from Cascade Avenue will be routed onto the centermost eastbound lane of C-;cads Avenue to the centermost southbound lane of Greenburg Road. 4) For sites #4 and 415, the centermost southbound lane of Greenburg Road will be closed with southbound traffic routed onto the curbside lane of Greenburg Road. Given the large amount of traffic on Greenburg Road, both flaggers and flashing arrow signs will be located on either side of the drilling operation. Hazard warning signs Indicating 'FLAGGER AHEAD' will also be posted, as appropriate. American Barricade will provide all traffic control services In accordance with standard DOT regulations. Construction costs RZA estimates the cost of installing one off site monitoring well at approximately$1,200. This price Includes the cost of providing traffic control services by American Barricade. A security bond in the amount of$6,000 will be provided by BP Oil Company by August 22, 1991. However, given the likelihood that less than five wells will be installed, the security bond will be reduced accordingly following completion of the wells. If you have any questions or require any additional information, please do not hesitate to call. Respectfully submitted: RITTENHOUSE-ZERIAN & ASSOCIATES, INC. J Estrem, Project Manager Paul Trone, P.G., Geolooist b � w jP v;ce / S+a��l y / #1 � .0 v' No ► e,X _ - / � ice • PL/-TE 1 -- Well fact �,o►, N1�P wo RITTE'NHOUSE MUN& R Z A ��� G.��_� A SSOCU TES. INC. By Geotechnical&Emvi-nnmrnla! NZ Contulfanlf m if N M Scale -��