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HomeMy WebLinkAboutResolution 427 - Mingus Creek PlazaI~ PLANNING COMMISSION RESOLUTION NO. 427 A RESOLUTION APPROVING A "I'I~N'I'ATIVI~ PAR"I'ITION AND SI`I'E PLAN REVIEW ( 37 2W 02 TAX LOTS 140, 1200, 1300 & 1400) ( Applicant: Mingus Creek Plaza) Recitals The applicants are proposing the development of a community shopping center with a n~zaj or retail grocery store as the anchor and seven other retail con~znercial uses inclzzding a gas station and restaurant as co-tenants. 2. The applicants are also requesting a zxzizaor partition to separate the grocery store, its parking area and an associated gas station (7.2 acres) from a second parcel (8.1 acres} with six other retail uses and a third parcel {4.9 acres} planned for ahospitality/zxzotel center. 3 . On July 7,1998, the Central Paint Planning Commission conducted aduly-noticed public heating on the application, at which time it reviewed the City staff reports and heard testimony and comments on the application. Now, therefore; BE IT RESOLVED BY THE PLANNING COMMISSION OF THE CITY OF CENTRAL POINT, OREGON, AS FOLLOWS: Section 1. Approval Critezia. The following chapters of the Central Point Municipal Code appy to this application: A. CPMC 10.10.010 et seq. Tentative Plans B. CPMC 17.44.010 et seq. C-4, Tourist and Office Professional District C. CPMC 17.60.010 et seq. General Regulations D. CPMC 17.04.010 et seq. Off Street Paz•king E. CPMC 17.72.010 et seq. Site Plan, Landscaping and Construction Plan Approval Section 2. Finding and Conclusions. The Planning Commission finds and determines as follows: A. Ten~tive Plan for a Land Partition Requirements. The application and tentative plan are in the correct form and contain all of the information required by CPMC Chapter 16.10. 1 -Planning Commission Resolution No. 427 {07107198) F3. ;~t~ til~,~i l~'TCiti~ofLot. C1'MC` 17.28.t)~~1,'st~~ialisl,cs nlini,Tttn~, u,~c~,. ~,ai{Iti~un~1 F;~`~:vSs recl~~ir~n~cnt ti~rthe ~.~`-4~'1"cr~.~ri5t ~,n~i (,)11i~~~~ ~l'rt,i~•~;;i~7,~,1? flist~i~~t. Parcel 1: Parcel 2: 7.2 ~,c~res 8.1 ttt,L 1.~1 a; res S~eti.c~~i 3. Conchtior~al ~~prc~val. `hl7c apPlicatirn f~~r Site t~lan and ~~T'cr,i~,ti~.~c N1 i n~~r Land Partiti~:~n 1,;~,~~ i,-~ is hereby ~~~rrc~v~ci, s~~bject tc~ t?~c cc~,~<f itic~i,~ ~~~~ 1 <]r :~~ an 1~~hibit °°tl,', ~;i t< <ci~~ ~ i ~,~r;~tt~ ~nc3 by reference incoa°pc~rated 1~crein~ in~l~os~:~1 u,~;i~ r a~~,=hcrrity ~.~I'CP~C 16.36. Passed. by tli~ f'i~u~aninf; Cc~znmissic~n anal ~r;-'.nei~l by me in authenticaticaa~ c~f'its i, i~~a~, c~ this '` ~ ~'` day c~i~__ 1998. ~- ChUC;~ Piiai~~_i Pla?~,~in`~, C;omznssian Chairman ~TTF,ST: ,gib ~r ~ ___,m..e.,..v_.-.~.,.~_.....~~.._~..___~, Cit~ l:e~a~.s~ibta.~,,., : ApPrc~ved by me this :' `~ day ai'___.. -~~_._, 1998. `7 Chuc1 I'i I ~:~~? Planning, Commission Chairman. 2 - Planning Commission 12esolution No. 427 (071fl7/98) EXI~III3IT ~~ PLANNING DEPARTMENT RECOMMENllI~.)]) CONI)ITIQNS 4I~ AI'l'ROVAL `l'he applicarltJproperty owner shall submit subsequent building elevatiorls to the Planning Cor11r11issiorl as they l~ecotrte availalile for architectural review. 2. The approval of the Tentative Plan shall expire ir1 one year or1 J~rly 7, 1999 unless art application for final plat or extension has been received by the City. Reciprocal Easer11er1t Agreements shall be obtained and recorded prior to or ir1 canjurlctiarl with the recording of a final plat, 3. The project must comply with all applicable local, state and federal regulatrons including, but not limited to, any requirements of the Division of State Lands for working within a water way. 4. The tentative and final plats shall depict utility easements requested by the City, BCVSA and WP Natural Gas. Any changes to utility layout including fire hydrants shall require subsequent approval by the respective service provider. 5. The applicant/praperty owner shall be responsible for the payment andlor construction of recommended transportatiorl improvements including, but not limited to, a traffic signal at the Freeman/Oak Street intersection; raised medians as determined by the City Public Works Department; a transit shelter and four way stop signage at the intersection of Freeman and Hopkins Roads. 6. The applicant/property owner shall submit final parking, landscaping, lighting and sign plans to the Planning, Public Works and Building Departments for approval prior to obtaining any building permits. CITY OF CENTRAL POINT DEPARTMENT OF PUBLIC WORKS STAFF REPORT for CENTRAL POINT TOWNS CENTER PW#98033 Date: Applican#; Project: Location Legal: Zoning: Area: Units: Plans: Report By: Purpose July 6, 1998 Central Point Towne Center, L.L.C., P.O. Box 8271, Medford, Oregon 97504 Agent: Charles Martinez, 744 Cardley Avenue, Suite 100 Medford, Oregon 97504-6124 Owners: Rowe (Trustee} (1100}; Lamb (1200}; Five Star Properties, Wes#, L.L.C. {1300}; and Korner {1400} Central Point Towne Center East of Intersection of Freeman Road and Oak Street T37S, R2W, Section 2 Tax Lots 1100, 1200, 1300, 1400 C-4, Tourist and Office Professional District 20.2 Acres. 3 Parcels: Parcel 1:7'.2 acres far grocery Store, gas station, and parking Parcel 2: $.1 acres #or six other retail buildings with parking Parcel 3: 4.9 acres for hospitality/motel center with parking 1 `tentative plat" illustrating division of tax lots into 3 parcels prepared by Noffbuhr & Assoc., amended Jufy 2, 9998; and Site Plan - 16, drawing 5-101, dated July 2, 3998 prepared by Abeloe & Associates, A.I.A. Lee N. Brennan, Public Works Director Provide information to the Planning Commission and Applicant (hereinafter referred to as "Developer") regarding City Public Works Department (PWD} standards, requirements, and conditions to be included in the design and development of the proposed industrial facility. Gather information from the Developer/Engineer regarding the proposed development. Special Requirements Existln Infrastructure: The Developer shall demonstrate that all connections to existing infrastructure (i.e. streets; water, sanitary sewer, storm drain systems; natural drainage systems; etc.,} will not interfere with or provide far the degradation of the existing effective level of service or operation of the infrastructure facilities, and chat the existing infrastructure facilities have either adequate capacities to accommodate the flows andlor demands imposed on the existing infrastructure as the result of the connection of the proposed development's infrastructure, or wil' be improved by and at the expense of the Developer to accommodate the additional flows andlor demands; while maintaining or improving the existing lave! of service of the affected facility, as approved by (as applicable}, the regulatory agency, utility owner, andlor property owner involved. 2. Master Plans: In association with City PWD staff, the Developer shall prepare master plans for the storm drain collection, retention, and conveyance system, the sanitary sewer collection and conveyance system, and the water distribution system for the subject tax lots and the areas to the north and south of the proposed development. The master plans should take into account the flows or demands of the proposed development, any future development on neighboring portions of the subject tax lot, on neighboring properties, and any areas deemed by the City that ~rulral 1'nnrl 1 r~nvcc~ (c'rtlc'r' I'll"f) ~'1u//7lryrnrr .11crr'- 1?9~ti f'u~r° , will need to connect-into the proposed development's or existing neighboring infrastructure. The prepared master plans should take into account any previous master plans that have been prepared and approved by the City and Jackson County. 3. Rrghts-of--Way arrd.Easemenfs: Provide dedication for expansion of the righf-of-way along Freeman Road to accommodate necessary improvements to Freeman Road to accommodate traffic and turning movements associated with shopping center. For the traffic lanes proposed on the site plan, this would require right-of-way widths ranging from 68 feet to 82 feet in width. Since the western side of Freeman Road has existing residential development, this would likely necessitate obtaining all the remaining required right-of-way width from the eastern side of Freeman; thus requiring additional righf-of-way dedication ranging from 8 to 22 feet from the proposed development. Additional right-of-way may need to be obtained from tax lots 1500 and 1600 to construct a northbound deceleration lane. The Developer shall provide suitable and acceptable easements for any public works infrastructure loco#ed outside the public rights-of-way. A separate 10-foot minimum width public utilities easement (P.U.E.) should also be required for utility installation outside the Freeman Road right-of-way along the property's exterior frontage with Freeman Road, and potentially with frontage on Interstate 5. Ail construction plans and as-built drawings shall accurately portray (both horizontally and vertically) utility line and appurtenance locations and the locations of any existing and new easements on the proposed development.. 4. Traffic Study: A draft #ransparta#ian impact study for the proposed development, prepared by Ki#telson & Associates, Inc., dated June 17, 1998, has been submitted to the City. The draft traffic study analyzed the year 2000 projected traffic flows and intersection levels of service at the intersections most likely to be impacted from this development; namely: Freeman and Hopkins Roads Freeman Road and East Pine Street Freeman Road and Oak Street. As summarized in tables 3 and 5, and in the Findings section of the report {beginning on page 20), two of the three affected intersections would be greatly affected (Freeman and Hopkins Road, and Freeman Road and Oak Street): the level of service of these intersections would drop to unacceptable levels, based on the estimated traffic flows. The proposed solution for the intersection of Freeman and Hopkins Roads would be to install a 4-way stop sign. This would result in an estimated level of service (LOS) rating decline from "B" without development to LOS "C" with the development, which meets the City's current minimum LOS requirements. The proposed solution for the intersection of Freeman Road and Oak Street is for the installation of a traffic signal (separate turn lane movements) at this intersection. A signal warrant study was performed, and it was determined that based on the projected traffic flows and turning movement at this intersection that a traffic signal for this intersection is warranted. Central Point Tox~ne Center P#'D Staff Report A4nv l7, 1998 Page 3 City PWD staff concur with the proposed improvements to these intersections, and 5. Landscape Buffers: Provide for City PWD and planning department and JC Roads approved landscaped buffers (including suitable landscaping and meandering sidewalks) along the applicable portions of 1=reeman Road. 6. Improvements fo Freeman Road: Freeman Road along the frontage of the subject development is a rural road that does not meet current City or County urban standards. The road will need to be improved, as a minimum, to meet City standards and the traffic flows (both vehicular and pedestrian) created as a result of the proposed development. Since the trafFic flows created as the result of this development affect bath the southbound and northbound directions of Freeman Road, It as the Clty PWD's recommendation that the Developer be responsible for, as a minimum, all necessary improvements to Freeman Road along the proposed development's property frontage with Freeman Road, and any applicable taper or end sections. The improvements include, but are not limited to, street section, curbs, gutters, sidewalks, bikeways, street lighting, storm drainage, landscape buffers, and traffic control and delineation (including appropriate traffic signals at the intersection of Freeman Road and Oak Street), which shat! be coordinated and approved by the JC Roads and the City PWD, and designed and constructed at the expense of the Developer as part of the proposed development. 7. Erosion Confrol Plan: if applicable, a suitable erosion control plan must be prepared and submitted to the Oregon Department of Environmental Quality (DEQ) for the construction of any improvements associated with this development. The construction plans associated with this development will not be approved by the City PWD until the City PWD receives a copy of the written approval of the erosion control plan by the DEQ. 8. Storm Drainage System: The storm drain system shall be designed to accommodate the storm water run-off from and run-on onto the proposed development (either surface run-on or culvert or creek/ditch conveyance); any future development on adjacent properties; conveyed storm drainage or surface water flow, and any flows from areas deemed by the City that will need to connect-into the proposed development's SD System. It appears #hat the majority of surface water flows from the properties south and possibly north of the subject tax lots drain across the subject tax lots. The proposed storm drainage system will need to be designed to accommodate these existing "run-on" flows. However, the City is requesting that the developer design the storm drain conveyance system to accommodate projected post-development flows from these properties. City would propose reimbursement to the Developer far up-sizing the applicable up-sized portion(s) of the storm water conveyance system to accommodate the future development on these neighboring properties, as applicable. The City is currently developing a schedule for the cost differences for up-sizing storm drain pipe and manholes. Once the cost table is developed, the cost differences will be multiplied against the lineal feet of storm drain pipe for the various pipe up-sizing, and the number of manholes up-sized, to determine the total reimbursemen# that would be due the Developer. Once the amount of the reimbursement is determined, it is proposed that the City would enter into an agreement with the Developer that calls for payment of the determined reimbursemen# amount (which would likely be designated as the "Towne Center storm drainage project fee") as it is collected from the developers of the affected properties. C°ertPr'al f'otrrr 7~nu~ne C'errrer afar l', f 99tY f'a~e -! 9. off-Site Storm Drainage Infrastructure: For any storm drainage infrastructure constructed or improved outside the City's rights-of-way or easements for drainage of surface waters from the subject development, the Developer shall provide a suitable document or documents which contain approvals for the implementation of such connection andlar improvements and which describe: ^ Who is responsible for the operation, maintenance, and repair of the infrastructure facilities to maintain the original design parameters associated with the infras#ructure. If the City is to operate and maintain the infrastructure, the applicable funding mechanism that will be created (i.e local improvement district) far the associated City expenditures; ^ How will access be afforded and maintained indefinitely to maintain and repair the infrastructure facilities; ^ That an easement or other suitable conveyance document has been granted, as necessary, to provide suitable access an private property for the inspection, maintenance, and repair work to be performed on the infrastructure facilities. The easement shall include a statement which allows access by City personnel for inspection and maintenance purposes; and 10. Creek Sefback Requirements: Creek setback requirements of CPMC 17.50.090 E. may affect some of the proposed developments strucutres {i.e "Outdoor Dining" area". As applicable, should require maintenance access easement and 20-foot maintenance access road as indicated in the this creek setback requirement of the City's municipal code. 11. Wafer Distri,bufion 5ysfem: The water system should be of "reinforced loop" design: a minimum of two connections will need to be made to the City's distribution system {12-inch water line) on Freeman Road. This distribution line, according to recent Fire District 3 tests, should be able to accomodate a maximum fire demand flow rate of 4,000 gpm. if additional fire flaw demands will be required by the development, then the Developer wilt be resonsible for up- sizing the existing lines to obtain the required flows, as applicable. 12. Flood Study of Mingus Creek: The proposed development places improvements and structures within ar alters the 100-year floodzone associated with Mingus Creek. The Developer should be required to have a 100-year flood study analysis performed. The flood study must provide findings which indicate what affect does the placement of the proposed improvements and struc#ures have on the base flood elevation and floodzone boundary, and what affects will the modification of the floodplain eleva#ion and floodzone boundary have an the existing facilities and properties surrounding the proposed development. The Developer's engineer shall determine the existing base flood flow rates and the base flood elevation contours; and illustrate the existing boundaries of the floodplain and floodway fora 100-year "base flood" storm event associated with Mingus Creek through the affected properties. The construction drawings shall indicate the revised base flood elevation contours and boundaries of the floodplain and floodway expected to occur following the completion of any development within the identified floodzone (also referred to as the "Area of Special Flood Hazard"), including any affected upgradient areas. The information determined in this study wi11 also be used to determine minimum finished floor elevations for any structures that will be placed within the area of special flood hazard. Central Point Towne Center P6f'D Staff Report May z ~, 19 s8 Page S General All construction of public improvements shall conform to the City's PWD Standards, the conditions approved and stipulated by the Planning Commission, and other special specifications, details, standards, andlor upgrades as may be approved by the City Administrator or his designee prior to the approval of the construction plans for the proposed development. During construe#ion, changes proposed by the Developer shall be submitted in writing by the Developer's engineer to the City PWD far approval prior to implementation. 2. Developer shall provide copies of any permits, variances, approvals, and conditions as may be required by other agencies, including, but not limited to, the Oregon Department of Fish and Wildlife {DF'W}, Oregon Department of Environmental Quality (DEQ}, Oregon Division of State Lands {DSL}, U.S. Army Corps of Engineers {ACOE), affected irrigation districts, and JC Roads. 3. Prior to approval and acceptance of the project, the Developer's engineer or surveyor shall provide the Public Works Department with "as-built" drawings. If #easible, the Developer's engineer ar surveyor should provide the drawings in both a "hard copy" form (produced on Myiar~) and in a "digital" format compatible with AutoCAC~, or other farm as approved by the City PWD. As-built drawings are to be provided to the City which provide "red-line" changes to final approved construction plans that identify the locations and or elevations (as appropriate} of actual installed items, including, but not limited to, invert, inlet, and rim or lip elevations; spot elevations identified on drawings; road alignment; water lines, valves, and fire hydrants; water and sewer lateral stationing; modifications to street section; manhole and curb inlet locations; street light locations; o#her below grade utility line locations and depths; etc. Provide a "red- line" hard copy (on Mylar'~), or an approved alternative format, of construction drawings, and if #easible, an acceptable AutoCAD~ compatible drawing electronic file to the City at completion of construction and prior to acceptance of public in#rastructure facilities completed as part of the proposed development, or as otherwise approved by the City Administrator or his designee. 4. All elevations used on the construction plans, on temporary benchmarks, and on the permanent benchmark shall be tied into an established City approved benchmark and be so noted on the plans. At least two permanent benchmarks shall be provided for the proposed development, the locations of which shall be as jointly determined by the City PWD and the Developer. 5. If applicable, all existing concrete, pipe, building materials, structures, clear and grub materials, and ether deleterious materials shall be removed from the site and either recycled or properly disposed of in accordance with the requirements of the DEQ. S. Easements far City in#rastructure (i.e. sanitary sewer, water, and storm drain [if applicable]} should be a minimum of 15-feet wide, and should not spit lot lines. Easements for public storm drainage, sanitary sewer, and water lines should be dedicated to the City and not just a P.U.E. Centerline of buried infrastructure shall be aligned a minimum of five (5) feet from the edge of the easement. If two or more City owned utilities are located within an easement, then a minimum of 20-foot width should be required. Easement dedications in final deeds or CC&Rs need a statement which should clearly indicate that easements must be maintained with suitable, driveable vehicular access to City public infrastructure facilities, as determined by the City PWD. <~cx(ra! Pvrrr~ I'ms~uc' C~cater~ !'iF7J.Sraff Rc~ixrr! ;11cn• 3°. 199cY /'atc~ 7. Prior to the City PWD final approval of the construction plans for the proposed improvements, the following should be submitted: ^ A copy of written approval from l=ire District 3 of the final street and driveway layout, site access, fire hydrant placement, and water system improvement plans for the proposed development. ^ The plans relating to the sanitary sewers should be approved in writing by BCVSA, and the appropriate signature blocks should be completed on the plans. ^ A copy of written approval from JC Roads regarding Freeman Road improvements {as applicable} and driveway connections to Freeman Road. 8. Field verify all existing infrastructure elevations and locations {i.e. pipe inverts, curb elevations, top of banks, ditchlchannel inverts, street elevations, etc.), to which the proposed development's infrastructure will connect into existing improvements, prior to final construction plan design and submit#al for final approval. 9. Overhead power lines. If applicable, coordinate efforts with Pacific Power and Light, US West, and TCI Cable, to convert any overhead electrical power, telephone, or cable facilities within the proposed development to underground facilities, prior to the acceptance by the City PWD of the public improvements associated with the proposed development. All agreements and costs associated with the conversion of these facilities from overhead to underground facilities, shall be by and between the utility owners and the Developer. 10. The accurate locations of any existing underground and above ground public infrastructure, and the location of the associated easements with these facilities, shall be accurately portrayed {both horizontally and vertically) on the construction plans and as-built drawings. 11. The Developer's engineer ar surveyor shall provide to the Public Works Department a drawing of the recorded Final Plat map reproduced on Mylat~ and in an acceptable electronic form in AutoCAD® format. The Final Plat shall be tied to a Segal Government corner and the State Plane Coordinate System. Ths Final Plat shall either reflect or be later modified to reflect any applicable "red-line" changes no#ed in the construction "as-b~ilts", at the discretion of the City Administrator or his designee. StreetslTraffic Existing Improvements - Freeman Road -Secondary Arterial. Current ROW 60' wide, varying street width. Right-of Way required: varying width Jurisdiction -Jackson County. Construction drawings for #his Tentative Plan shall include a Street Lighting Plan in accordance with the requirements of the City PWD or as otherwise approved by the City Administrator or his designee. The construction drawings shall include clear vision areas designed to meet the City's PWD Standards. 2. The Developer's engineer shall, at the cost of the Developer, evaluate the strength of the native soils and determine the private drivewaylstreet and parking lot section designs to accommodate C'c~rlral I'oirrl 7~ois•rte Center f'14`U Sru/f Kr~pa•1 Mao ?-. 1998 Pa~c - the expected loads (including fire equipment and delivery trucks) to be traveled on these driveways. If a public street, then the City will design the required street section. Storm Drainage, Irrigation Improvements Existing Improvements - Mingus Creek flows south to north across the western portion of proposed development. Rogue River Valley Irrigation District potentially controls irrigation rights within the project area including conveyance of water in Mingus Creek. Developer's engineer shall develop a facility plan for the storm drain collection, retention, and conveyance system (SD System) which provides for storm water run-off from and run-on onto the proposed development (ei#her surface run-on or culvert ar creek/ditch conveyance), any existing or future development on adjacent properties, conveyed storm drainage, or surface water flow (i.e. Mingus Creek), and any areas deemed by the City that will need to connect-into the proposed development's SD System. 2. Developer's engineer shall determine how SD system will work during 10-year and 100 year flood events associated with Mingus Creek. Identify the HGl_ in Mingus Creek during 10-and '100-year storm event, and what affect it will have on the proposed outlets and storm drain system. System should be designed to adequately drain 10-year storm without surcharging ar should be provided with adequate storage to prevent surcharging; and be designed to prevent backflow of water from Mingus Creek up into SD system during storm events. 3. During the design of the SD system, the Developer's engineer shall consider the effect of the proposed improvements and structures with regard to the 100-year base flood event floodway and ffoadplain of Mingus Creek. The design of the storm drain collection and conveyance system (SD System) should provide for storm water run-off from and run-on onto the proposed development {either surface run-on or culvert or creeklditch conveyance}; the Developer shall demonstrate that the storm water flows from the completion of the proposed development {and at any time prior to completion of development} do not exceed predevelopment flows into Mingus Creek; or that allowances or provisions have been made (and approval of the applicable properties owners and regulatory agencies has been obtained), which accommodate any additional flow which exceed predevelopment flows. The Developer and the City PWD shall agree on the applicable run-off coefficients, curve numbers, retardance, etc., to be used in the engineering calculations. 4. Developer's engineer shall provide a site drainage plan with the facilities being designed, at a minimum, to accommodate a 1 D year storm event. The SD system must be designed to adequately drain the 10-year storm event without surcharging or must be provided with adequate storage to prevent surcharging; and be designed #a not impact existing public storm drainage facilities. Catch basins and area drains shall be designed for nn-site sediment and petroleum hydrocarbon retention. The private storm drain system shall be designed to directly connect to the public storm drain system, and shall not be designed to discharge to the street surfaces. Surface drainage from the fuel storage and dispensing facilities shall not be directly connected to the storm drainage system without prior approval by the DEQ and City PWD. C•e+:f+~n! Pol+rt Tax°rae C'ente+' Pi#'I3 Staff Kepart htati- 2?. 1998 r~«~>~> s 5. Roof drains and underdrains shall not be directly connected to public storm drain lines, and shall drain to the on-site private storm drain system. 6. As applicable, any discharge points of the storm water facilities steal! be designed to provide an aesthetically pleasing, useful, and low maintenance facility, that are designed to mitigate erosion, damage, or loss during a 100 year storm event; and that mitigate the "attractive nuisance" hazards associated with these types of facilities. 7. Prior #o City PWD construction plan review, the Developer shall provide the City PWD with a complete set of hydrologic and hydraulic calculations and profile plots for sizing the SD system, which shall incorporate the use of the City PWD's rainfalllintensity curve, and City approved run- off coef€icients, curve numbers, retardance, pipe roughness coefficients, etc., that are used in the engineering calculations. 8. Public storm drain pipe materials shall be PVC, HDPE, or reinforced concrete, with water-tight joints. Provide concrete orsand-cement slurry encasement where required in areas of minimum cover. 9. if inlets/catch basins are to exceed ~4.5 feet in depth from the lip of the inlet, then the inlets and ca#ch basins shall be designed to afford suitable "man" entry into the inlets/catch basin far maintenance/cleaning purposes. 10. Developer's engineer shall provide hydrology and hydraulic calculations and flow line plots for private and public storm drains. Plot HGL on profile or provide a separate profile drawing that indicates the HGL on the profile. Pipes should maintain cleaning velocity (minimum 2.0 feet per second} and have adequate capacities without surcharging during the design storm. 11. The Developer may wish to incorporate the use of a perforated SD system. If so, then the perforated storm drain system shall be designed to have adequate capacities to: ^ Convey the collected groundwater and storm water with the minimum cleaning velocities and wi#hout surcharging the collection and conveyance piping; and Cl Minimize silts, sands, gravels, and fines migration from the native soils into the SD system. The plot#ed HGL shall include both the groundwater infiltration, and the storm water run-off and run-on inflows into the SD system. 12. In the public storm drain system, main#ain a minimum 0.2-foot drop between inlet and outlet pipe inverts in manholes and curb inlets, unless flow-through velocities during the design storm event exceed 3.0 feet per second {fps). If flow velocities exceed 3.0 fps and the inlet pipe is in relatively direct (i.e. '180 ~ 5 degree) horizontal alignment with the outlet pipe, then as a minimum the pipe slope shall be maintained through the base of the manhole or curb inlet. If flow velocities exceed 3.0 fps, and there is other than relatively direct horizontal alignment between the inlet and outlet pipes, then a minimum of a 0.1-foot drop between inlet and outlet pipe inverts in manholes or curb inlet must be maintained. A bottom channel shall be formed in the manhole ar curb inlet base to mitigate #ransitional losses and enhance flow through the manhole or curb inlet. C~entra! Point loirnc' Ccritcr f ri'f? Staff I2efu~rt rilav l a, 1994 Pale 9 13. Sheet flow surface drainage from the property onto the public rights-of-way or onto neighboring properties is unacceptable. 1~. Plans which propose to include the discharge to Mingus Creek and any construction or modification within the floodway of Mingus Creek or in the road ditches, shall be in compliance with DS!-, ACOEr, ODFW, DEQ, JC Roads, andlor City PWD (as applicable} guidelines and requirements and any applicable conditions and ar approvals, of these regulatory agencies. Sanitary Sewer All sanitary sewer collection and conveyance system (SS System) design, construction and testing shall conform to the standards and guidelines of the Oregon DFQ, 1990 APWA Standards, Oregon Chapter, Bear Creek Valley Sanitary Authority (BCVSA), and the City PWD Standards, where applicable. 2. The construction plans and the as-built drawings shall identify lateral stationing for construction of sewer laterals. 3. The City upon completion of initial construction plan review and preliminary approval, will forward the plans to BCVSA for completion of the review process. Upon completion of the review by BCVSA, completion of final revisions to the plans by the Developer's engineer, and following the final approval and signature on the construction plans by BCVSA, the Public Works Director will approve the plans in final form. 4. All testing and video inspection of lines and manholes shall be done in accordance with BCVSA requirements, at Developer's expense. The Developer shall provide BCVSA and the City with test reports, TV reports and certification a# the sewer system construction prior to final acceptance. Water System The water system shall be designed to provide the required fire flow demand capacities far the proposed facility, which meet Fire District 3 requirements. Maximum spacing of fire hydrants shall be 300 feet. The water system shall be of reinforced flow ("looped") design. Water service lateral connection stationing and size shall be provided on construction plans and as-built drawings. 2. Developer shall comply with Oregon Health Division (OHD) and Ci#y requirements for backflow prevention. Site work, Grading, and Utility Plans Grading plans should have originallexisting grades and final grades plotted on the plan. Typically, existing grade contour lines are dashed and screened back, and final grade contour lines are overlaid on top of the existing grades and are in a heavier line width and solid. Contour lines should be labeled with elevations. 2. All structures shall have roof drains, area drains, andlor crawl spaces with positive drainage away frog the building. Centro! Point 7ouvie Center PF3'D Staff IZepor't Afay 1 ~, 1998 Page I Q 3. Provide City with a utility plan approved by each utility company which reflects al[ utility line locations, crossings, transformer locations, valves, etc. 4. Utility locations must be accurately included on the as-built drawings, or as a separate set of drawings attached to the as-built drawings. Rights of Waysl~asements If applicable, Developer shall provide a Statement of Water Rights (on a City approved form), for any affected properties. far properties determined to have water rights, the developer will coordinate with the State Watermaster the re-allocation of any waters attached to [ands no longer irrigable as a result of the proposed development.