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MMD2003-00019 MMD2003 - 00019 H2O TRANSFER PUMP STATION Lijk CITY OF TIGARD December 9, 2003 OREGON Brian Rager Tigard Water District 13125 SW Hall Boulevard Tigard, OR 97223 RE: Minor Modification Request: Upgrade to Existing Transfer Pump Station at 12475 SW Bull Mountain Road, Case File No. MMD2003-00019. Dear Mr. Rager: This letter is in response to your request for a Minor Modification (MMD2003-00019) of the existing Transfer Pump Station located at 12475 SW Bull Mountain Road, WCTM 2S110BC, Tax Lot 00900. You have requested to modify the approved site plan by upgrading the existing pump capacity to provide a firm pumping capacity to the 550-foot zone of 3,900 gpm and 3,300 gpm to the 713-foot pressure zone. It is proposed that a new transfer pump station will be constructed on the same site and the existing pump station will be abandoned. There will be a total of six pumps, three for each of the two pressure zones. The new pump station would require a new 20-foot by 45-foot CMU building with a metal roof. The architectural treatments to the building will be tied in with the proposed well house building for ASR Well #2 (approved by MMD 2003-00015). The site is zoned R-1, and has a conditional use permit (CUP) for the existing 10 MG reservoir and pump station. As was mentioned previously, a new ASR well was approved at the southwest corner of this site by MMD 2003-00015. The submitted site plan reflects the current conditions as well as the proposed modifications. Analysis of Modification Request: Section 18.330.020 (C)(1) of the Tigard Development Code Condition Use criteria, states; "any modification which is not within the description of a major modification as provided in section 18.330.020 shall be considered a minor modification." Section 18.330.020 states that the Director shall determine that a major modification(s) has resulted if one (1) or more of the changes listed below have been proposed: a) A change in land use Response: The transfer pump station upgrade does not change the overall use of the site. The upgrade merely improves the City's pumping capacity to the 550 and 713-foot pressure zones. 13125 SW Hall Blvd., Tigard, OR 97223 (503)639-4171 TDD (503)684-2772 Palle 1 of 3 b) A 10% increase in dwelling unit density Response: This provision does not apply, as the existing site is not developed as residential. c) A change in the type and/or location of access ways and parking areas where off-site traffic would be affected Response: There is an existing access drive at the northwest corner of the site that serves the existing pump station. That access location will not be changed. d) An increase in the floor area proposed for non-residential use by more than 10% where previously specified Response: The existing reservoir has a floor diameter of approximately 225 feet, yielding a floor area of approximately 39,760 square feet. The new CMU building for the new transfer pump station will have a floor area of approximately 900 square feet, which is roughly 2.3% of the existing floor area. Therefore, the increase is less than 10%. e) A reduction of more than 10% of the area reserved for common open space and/or usable open space Response: There is no designated open space on this site. f) A reduction of specified setback requirements by more than 20% Response: The City will meet all required setbacks of this zone when constructing the transfer pump station building. The plan shown on Figure 4-1 shows the new building to be approximately 10 feet away from the northerly property line, which exceeds the minimum requirement of five feet. There will be no reduction in setbacks necessary. g) An elimination of project amenities by more than 10% where previously specified provided such as: 1) recreational facilities; 2) screening; or 3) landscaping provisions Response: The subject site is approximately 2.35 acres. The existing reservoir, pump station and access roadways encompass roughly 42,500 square feet of area, leaving approximately 1.38 acres as landscaped area. The construction of the CMU building will reduce that landscaped area by approximately 900 square feet, or 1.5%. Therefore, any reduction in landscaped area will be less than 10% and greater than 15% of the site will remain landscaped. There are no recreational facilities on the site, and no screening amenities will be removed. h) A 10% increase in the approved density Page 2 of 3 Response: This criterion does not apply as the site is not developed as residential. THIS REQUEST HAS BEEN APPROVED BY THE PLANNING DEPARTMENT SUBJECT TO THE FOLLOWING LIMITATIONS. PLEASE SUBMIT A COPY OF THIS LETTER WITH YOUR BUILDING PERMIT APPLICATION. This request is determined to be a minor modification to an existing conditional use. The Director's designee has determined that the proposed minor modification of this existing site will continue to promote the general welfare of the City and will not be significantly detrimental, nor injurious to surrounding properties provided that, development which occurs after this decision complies with all applicable local, state, and federal laws. If you need additional information or have any questions, please feel free to call me at (503) 639-4171 ext. 2428. Sincerely, Ai/t. Morgan Tracy Associate Planner i:\curpin lmorganlworkspace\mmd\mmd2003-00019 (cot pump station) decision.doc Page 3 of 3 APPLICANT MATERIALS MINOR MODIFICATION 44 A''1 TYPE I APPLICATION CITY OF TIGARD 13125 SW Hall Blvd., Tigard, OR 97223 (503) 639-4171 FAX: (503) 684-7297 GENERAL INFORMATION Property Address/Location(s): I2`16— SW , —,-.11 P,V Tax Map & Tax Lot#(s): '2-f7-1 )CU b G 'ri.It Oocto0 FOR STAFF USE ONLY Site Size: 2.;5 AC-2-6 5 Case No.(s): /VIM 1.) A Una �r>O 1 `1 Applicant*: CAN q- TiC./AR (Pw DEPT.> Other Case No.(s): Address: I''(2 5 Sy,/ l-ALt— Receipt No.: City/State: 1 I CvA(Uj Zip: 9-12-/- ' Application Accepted By: ( •�-Gw-„,J Primary Contact: -1A1� _ Date: /a - 3 -"03 Phone: ,502,) --its - Z ( Fax:(5o1) (94--se)4o Property Owner/Deed Holder s)': (Attach list if more than one) Date Determined Complete: Rev.2/28/2003 is\curpin\masters\revised\minormod mst Address. 12;125 �vI >�41� CAS. Phone: c503)4A1-4111 City/State: etc 1't-f] / Of--- Zip: 91 Z./ * When the owner and the applicant are different people, the applicant REQUIRED SUBMITTAL ELEMENTS must be the purchaser of record or a lessee in possession with written (Note: applications will not be accepted authorization from the owner or an agent of the owner. The owner(s) without the required submittal elements) must sign this application in the space provided on the back of this form or submit a written authorization with this application. Er Application Form PROPOSAL SUMMARY The owners of record of the subject property request permission for a Owner's Signature/Written Authorization Minor Modification. To review a modification as a Minor Modification, the Director must first find that the expansion does not ❑ Title Transfer Instrument or Deed invoke one or more of the 11 criteria discussed within Section a Site Development Plan (3 copies) 18.120.070(B) of the Tigard Development Code. If the modification exceeds the maximum allowed under any one or more of the Q1 Site/Plot Plan (reduced 81/,'x 11") following criteria, a Major Modification review is required. Major Modifications are processed in the same manner as a new Site a Applicant's Statement (3 copies) Development Review. In a separate letter, please address the (Addressing Criteria Under Section 18.360.050(B) criteria below contained in Section 18.360.050(B) including a detailed Er-- Filing Fee $446.00 response to each criteria. ((t 6Cr> 2f4.1 T) 1. An Increase in dwelling unit density or lot coverage for residential development. Jurisdiction: IRII City ❑ Urb 2. A change in the ratio or number of different types of dwelling units. 3. A change that requires additional on-site parking in accordance with Chapter 18.765. In addition, the Director must find that the 4. A change in the type of commercial or industrial structures as defined by the Uniform proposed change complies with the underlying Building Code. standards of the applicable zoning district. To 5. An increase in the height of the building(s)by more than 20%. complete this review, the Applicant's proposal 6. A change in the type and location of accessways and parking areas where off-site must include a discussion indicating how the traffic would be affected. site expansion will continue to comply with the 7. An increase in vehicular traffic to and from the site and increase can be expected to minimum setback, building height, parking land exceed 100 vehicles per day. landscaping standards. Other applicable 8. An increase in the floor area proposed for a non-residential use by more than 10% requirements such as minimum Clear Vision excluding expansions under 5.000 square feet. areas near driveways and street intersections 9. A reduction in the area reserved for common open space and/or usable open space may also be applicable depending on where that reduces the open space area below the minimum required by this code or the building expansion is proposed to be reduces the open space area by more than ten percent. constructed on the site 10. A reduction of project amenities (recreational facilities. screening. and/or, landscaping provisions) below the minimum established by this code or by more than 10% where specified in the site plan. 11. A modification to the conditions imposed at the time of Site Development Review approval that are not the subject of Criteria 1 through 10 above. APPLICANTS: To consider an application complete, you will need to submit ALL of the REQUIRED SUBMITTAL ELEMENTS as described on the front of this application in the"Required Submittal Elements" box. (Detailed Submittal Requirement Information sheets can be obtained, upon request, for all types of Land Use Applications.) THE APPLICANT(S)SHALL CERTIFY THAT: • The above request does not violate any deed restrictions that may be attached to or imposed upon the subject property. ♦ If the application is granted, the applicant will exercise the rights granted in accordance with the terms and subject to all the conditions and limitations of the approval. • All of the above statements and the statements in the plot plan, attachments, and exhibits transmitted herewith, are true; and the applicants so acknowledge that any permit issued, based on this application, and may be revoked if it is found that any such statements are false. • The applicant has read the entire contents of the application, including the policies and criteria, and understands the requirements for approving or denying the application. SIGNATURES of each owner of the subject property. DATED this 3� day of ,20 027 "ee Owner's Signature Owner's Signature Owner's Signature Owner's Signature CITY OF TIGARD EXPENDITURE REQUEST This form is a multi-use form. Appropriate receipts and documentation must be attached to this form. Approved request due Monday 5:00 PM to A/P for checks by Friday(week opposite payroll only). VENDOR NO.: DATE: December 2, 2003 PAYABLE TO : City of Tigard REQUESTED BY: Brian Rager 13125 SW Hall Boulevard Tigard, OR 97223 MISCELLANEOUS EXPENDITURES. �' �' - ` Date Description. Invoice No etc. ACuntNo. Amount 12i2.1)3 Filing fee for Minor Modification 550-6270-755850 -l-lt, +)O Type I Application. Related to Transfer Pump Station Upgrade project at 12475 SW Bull Mountain Road(10 MG reservoir site). NOTE: Request that a fund transfer to CD be done in lieu of a check, as was done the last time we did a minor mod. TOTAL Mileage 36.5¢ APPROPRIATION BALANCE: $2,939,755.20 AS OF: 10/8/03 PURCHASING: APPROVALS: (IF UNDER$50) Section Manager/Professional Staff (IF UNDER$2500) Division Manager (IF UNDER$7500) Department Manager (IF UNDER$25000) City Manager (IF OVER$25000) Local Contract Review Board MEMORANDUM CITY OF TIGARD, OREGON DATE: December 1, 2003 TO: Current Planning FROM: Brian Rager, Engineering Manager " RE: Narrative for Minor Modification Request: Upgrade of Existing Transfer Pump Station at 12475 SW Bull Mountain Road (2S1 10BC, TL 00900) The City is currently under contract with Murray Smith & Associates (MSA) for the design of a new 3 MG reservoir to be located west of this site. Along with that reservoir, the "Water Distribution System Hydraulic Study", dated May 2000 (Hydraulic Study), calls for an upgrade to be completed of the City's transfer pump station located on the subject site. The reservoir and the pump station upgrade are necessary components to improving the City's 550-foot service zone. The transfer pump station currently serves only the 713-foot pressure zone and does not have enough pumping capacity to serve the 550-foot pressure zone. The Hydraulic Study recommended that this pump station be upgraded to provide a firm pumping capacity to the 550- foot zone of 3,900 gpm and 3,300 gpm to the 713-foot pressure zone. It is proposed that a new transfer pump station will be constructed on the same site and the existing pump station will be abandoned. Figure 4-1 in the application materials shows the proposed layout of the new transfer pump station. There will be a total of six pumps, three for each of the two pressure zones. The new pump station would require a new 20-foot by 45-foot CMU building with a metal roof. The architectural treatments to the building will be tied in with the proposed well house building for ASR Well #2 (approved by MMD 2003-00015). The new pump station will also require the following general infrastructure upgrades: • New piping and valves for the two sets of pumps. • Site grading, paving and landscaping around the new building. • For the 713-foot zone, three 1 ,650 gpm constant speed vertical turbine pumps, each driven by 150 — 200 HP electric motors. • For the 550-foot zone, three 1 ,950 gpm constant speed vertical turbine pumps, each driven by 75 HP electric motors. • New water line connections to 550-foot and 713-foot service zone water lines located in SW 125th Avenue. • New 480 Volt, 3-Phase electrical service. • New telemetry and control systems and upgrades. • The site is zoned R-1, and has a conditional use permit (CUP) for the existing 10 MG reservoir and pump station. As was mentioned previously, a new ASR well was approved at the southwest corner of this site by MMD 2003-00015. 18.330.020.B.2 lists changes to a site that would trigger a major modification. I will address each one as follows: a) A change in land use Response: The transfer pump station upgrade does not change the overall use of the site. The upgrade merely improves the City's pumping capacity to the 550 and 713-foot pressure zones. b) A 10% increase in dwelling unit density Response: This provision does not apply, as the existing site is not developed as residential. c) A change in the type and/or location of access ways and parking areas where off-site traffic would be affected Response: There is an existing access drive at the northwest corner of the site that serves the existing pump station. That access location will not be changed. d) An increase in the floor area proposed for non-residential use by more than 10% where previously specified Response: The existing reservoir has a floor diameter of approximately 225 feet, yielding a floor area of approximately 39,760 square feet. The new CMU building for the new transfer pump station will have a floor area of approximately 900 square feet, which is roughly 2.3% of the existing floor area. Therefore, the increase is less than 10%. e) A reduction of more than 10% of the area reserved for common open space and/or usable open space Response: There is no designated open space on this site. f) A reduction of specified setback requirements by more than 20% Response: The City will meet all required setbacks of this zone when constructing the transfer pump station building. The plan shown on Figure 4-1 shows the new building to be approximately 10 feet away from the northerly property line, which PAGE 2 exceeds the minimum requirement of five feet. There will be no reduction in setbacks necessary. g) An elimination of project amenities by more than 10% where previously specified provided such as: 1) recreational facilities; 2) screening; or 3) landscaping provisions Response: The subject site is approximately 2.35 acres. The existing reservoir, pump station and access roadways encompass roughly 42,500 square feet of area, leaving approximately 1.38 acres as landscaped area. The construction of the CMU building will reduce that landscaped area by approximately 900 square feet, or 1.5%. Therefore, any reduction in landscaped area will be less than 10%. There are no recreational facilities on the site, and no screening amenities will be removed. h) A 10% increase in the approved density Response: This criterion does not apply as the site is not developed as residential. In summary, the proposed transfer pump station upgrade appears to easily fall into a minor modification category. Please let me know if there are questions about the materials submitted. i\eng\brianr\public works\CIP\MMD-Transfer PS Upgrade-Narrative PAGE 3 _--.. — at I — — CITY 0I TIGARD d q ..-- pf _47, GEOGRAPHIC INFORMATION SYSTEM.t . , .R :., . a � 10 MG Res Site„ ,., , , ., .„,,, ,..1. i-St,11114;F 1,, I s6 Pump Station Upgrade �� �I • iiiiisik ,�ar . , 4. Ex. Transfer Pump Sta :. - „, d # �- 10 MG Res. Site t ° , -' `, it . ..,„,N. 4 Future ASR Well #2 ' ¢.� -� -. Approved by MMD 2003-0001 - F '� Tn'�r rcErr? I ate, r w. ' I + . •1 ! e �. I �y 1. .,tr4 �u rit �,y� v � a� • ._;.� py�;a._ till_ ITA pD itillpc_ - m e it I �a , .,„.1, ' Tigard Area Map id M �1 jig` ti., — r . =it ii - .°.` ._1* �SW�, �.Yr�rr sue-r- -.r....,� v ,.., A N.9 !P- +s» ' {.> "°.` _ ”' .. ,` I a; k �. sr t `. ',, _ a''!4 100 200 Feet A ��, 0 300 '� "�, i V=231 feet i1 411, 1 . �,.�: ' i COD ,,� HI a ', ,� ..✓�a 4 ` tr '* I City of Tigard G -. v ,,`�.\ *'I PROPOSED 16' 71]-FOOT ZONE DISTRIBUTION PIPING < PROPOSED NEW '1 • = TRANSFER . n PUMP STATION EXISTI MC.20'EASEMENT /`•' / E%I STING / �, '' ' / 3 TRANSFER • I 0..**,�ri% ,�{, / • V' PUMP I PROPOSED IB' -- STATION � �� • 530-FOOT ZONE \ CONNECT TO PROPOSED 550-FOOT e / DISTRIBUTION ExISTING ZONE RESERVOIR DISTRIBUTION PROPOSED NEW TRANSFER • / ryi�' PIPING llR 10 MG IPIP ING,SEE Fl Cl1NE S-I PUMP STATION +'g '/` ESERVOIR. PROPOSED rPROPERTY LINE / l ', 40' / METERER V�AL \ EXISTING FENCE / E+■BULL MOUNTAIN ROAD I _ __ __ __ __ ' -- --L-� _ti�__ _- 1 � FOPOSED MAP \ PROPOSED PUMP �e I5 S ATG >I 01 SQIARGE PIP INC SUCTI OIt PIPINO 16'WATER \\\\`' (2a'•M 1 M) IB' CONNECT TO EX!STING EI LOCAT I ON MAP ° ,B. 2a'BLIND FLC SCALE NTS § 0- f �' TRANSFER PUMP S �r-, ❑ ❑ ❑ ❑ ❑ ❑ J4___ STAT IONGTO BE ABANDONED ' rr 11 1(-ISCADA I .• I /-22•DUCT TO PUMP STATION r*W I`F--_ L2.1 I +�v I__ ,,,--n- FAN&PLENUM L 2.3------ 1 '_ _I �GJ r_ • CONNECT TO PROPOSED ��� -�� --&-N- I F-�� *l I MI< Q r 717-FOOT SERVICE ZONE �.y7 r-, I I J P 01 STR IBUTIDN PIPING. [- L_J p ^ �J�, I SEE FIGURE S-I �,WS_ ELECTRIC EIEISTING 12'TO • '/ �� \I I I L_J r rowel` METERS ABAIbOEp 1 r 'I --14 �' i EX EXISTING CONTRA VAULT �(`// ` 111 T ll I • _ r''' I j, Q (IN "e•••••••• L ,0 \/ ` W 55 24"OVERFLOW • � V E X.SS EN N 3 I 441 a•OUTLET Z 2a• INLET Cr 4c',/ g.1.1 < . . f , . ~ EXISTING 10 MG P 1 N RESERVOIR FIGURE 41 CRY OF HOARD PRELIMINARY TRANSFER PUMP • . STATION SITE PLAN § SCALE P AN D' 550-FOOT SERVICE ZONE • s SYSTEM IMPROVEMENTS u • NOVEMBER 2003 . ll./ - 03-0619.101 4 • • ii(–PI ED 16" 71,, .00T ZONE DISTRIBUTION PIPING Z w > PROPOSED NEW _ TRANSFER = PUMP STATION In EXISTING 20' EASEMENT / ■\' a EXISTING / 4,-,.... i� pQP�/ / TRANSFER I 'Y `<c PUMP I p'i� / ' PROPOSED 18" STATION �� i Gp�Gi / 550–FOOT ZONE CONNECT TO PROPOSED 550–FOOT �G�� a �� DISTRIBUTION EXISTING`. ZONE RESERVOIR DISTRIBUTION PROPOSED NEW TRANSFER / ��i y, / PIPING 10 MG 'PIPING, SEE FIGURE 5 I PUMP STATION \ci�i /�G�i "ESERVOIR, PROPERTY LINE / F+� t�/ / s–r. I PROPOSED � �' METER VAULT' EXISTING FENCE �� BULL MOUNTAIN ROAD _ _ _� _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ L _/- _____l_ _ _ _ S , i S R A i –x—x % x x x--x x x x—x ---x— Y�—X—x—x-7�-7f---- x—x x x `� PROPOSED PUMP PROPOSED PUMP[ UCTIONPPING ,/'EXISTING ISCHARGE PIPING /' 16" WATER • i� ' w 18 © CONNECT TO EXISTING LOCATION MAP > I6• y. 24" BLIND FLG SCALE: NTS vwwi r r o /r-1 ❑ ❑ ❑ 0 0 ❑ /L---I –` EXISTING TRANSFER PUMP 4 STATION–TO BE ABANDONED r2 7 1 ( 1SCADA I 22" DUCT TO PUMP STATION I. O*I" 14- L- I �i //'i��I �_, FAN & PLENUM 1- CONNECT TO PROPOSED _�---. -- I- I}-II---� ,- 1 ill i l I ct 713–FOOT SERVICE ZONE f–l r–l p / _t_-..v....\ I I J 1' 1 LA DISTRIBUTION PIPING, Lj 1 ITRANS_ ELECTRIC EXISTING 12" TO � I EXISTING__I• !FORMER METERS BE ABANDONED (T ---T• 1 EXISTING CONTROL VAULT Z I I II. r _ ROPO Y'' ' rll (..-\‘`\ S PCC�` S OVERFLOW \Sj�NG PC 24" OUTLET ,' Z "� EX •w 24" INLET RECEIVED I. EXISTING 10 MG DFC 0 �� 2003 N R E S E R V O I R coy OF TIGARD co — �` GIENGINEERING 44•404t., r \ Cr) ( - ° FIGURE 4-1 (7,A.„,„„„,„„, .4- I CITY OF TIGARD \ OREGON a .._ _ ,„,. I , . . ,„ cr I PRELIMINARY TRANSFER PUMP L STATION SITE PLAN PLAN .` 0 SCALE: 1"=20' 550-FOOT SERVICE ZONE Q SYSTEM IMPROVEMENTS - U o NOVEMBER 2003 i 0 _ . M 0 0 03-0619.101