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Res 91-065 RESOLUTION NO. 91-65 A RESOLUTION OF THE CITY COUNCIL OF THE OF FEDERAL WAY, WASHINGTON, APPROVING FINAL PLAT OF LAKOTA TRAILS, PHASE DESIGNATED AS KING COUNTY BUILDING AND DEVELOPMENT FILE NO. 338-25, CITY THE II, LAND WHEREAS, the preliminary plat for Lakota Trails, Phase II, designated Building and Land Development File No. 388-25, was approved subj ect to conditions on May 2, 1988, by King County Ordinance No. 8497; and WHEREAS, the applicant submitted the application for final plat for Lakota Trails Phase II within three years of receiving approval for the above-referenced preliminary plat; and WHEREAS, city of Federal Way community Development staff, having reviewed the proposed final plat for its conformance to the conditions (modified) of the preliminary plat; NOW, THEREFORE, THE CITY COUNCIL OF THE CITY OF FEDERAL WAY DOES HEREBY RESOLVE AS FOLLOWS: section 1. Findinqs of Fact. The Federal Way City Council makes the following Findings of Fact: 1. The final plat for Lakota Trails, Phase II, Building and Land Development File No, 388-25, is in substantial conformance to the preliminary plat and is in conformance with applicable zoning ordinances or other land use controls in effect at the time of submittal of the substantially complete application. COpy 2. conditions and All recommended by Zoning the Subdivision Hearing Examiner King for County, Washington, contained in report and recommendation to King County Council dated April 13, 1988, have been satisfied, the satisfaction and/or of conditions have been sufficiently guaranteed by the applicant, provided that the following clarification is noted: a. Condition 26 of the Hearing Examiner's report is administratively revised, pursuant to KCC 19.28.050(B) and Interlocal Agreement between King County and the City of Federal Way, to require satisfaction buffering of the and noise attenuation condition through dedication of Fifteen-Foot Native Growth Protection a Easement, rather than the construction of a fence, along the south boundary of lots adjacent to S,W, 320th, which easement shall not building setback adversely affect the lines for those lots. b. The open space requirement imposed pursuant to KCC 19.38 for Phase II shall be corrected to require the dedication of an additional .33 acres of open flat, dry and obstacle-free space property or, in the alternative, the payment of a fee-in-lieu-of in the amount of -2- $8,392.95, 3, Eighty percent of all required improvements have been made and sufficient bond has been accepted by King County as financial guaranty for completion of all required plat improvements, 4. All taxes and assessments owing on the property being subdivided have been paid, section 2. Approval. Based upon the above Findings of Fact, the final plat of Lakota Trails, Phase II, Building and Land Development File No. 388-25, is approved, subject to satisfaction of those conditions as contained in the Report of Subdivision Hearing Examiner dated April 13, 1988, attached hereto as Exhibit A and incorporated by reference. section 3, Recordinq, The appr?ved and signed final plat, together with all legal instruments pertaining thereto as required pursuant to all applicable codes, shall be recorded by the applicant in the King County Department of Elections and Records, All recording fees shall be paid by the applicant. RESOLVED BY THE CITY COUNCIL OF THE CITY OF FEDERAL WAY, WASHINGTON, this 2nd day of July , 1991. CITY OF FEDERAL WAY {Jo~ ß¡J MAYOR, DEBRA ERTÉL -3- AT'!'EêT: FILED WITH THE CITY CLERK: PASSED BY THE CITY COUNCIL: RESOLUTION NO. 91-65 June 26,1991 July 2,1991 91L890 -4- Exhibit A ,x~ April 1), 1988 REPORT AND 9.!:.~.!.E!£_9~!!'.!£. .~.9.!'.!-!!£. .^.- D_.~r¿~!U.":I.~lQ!!_!:'!< A M I " E n . KING COU"TY, WASHINGTON .n_._._- """""'10" .. "" ~'" """'". ~!!!>!££!..=. Building and Land Development Pile No. 308-25 Proposed Ordinance No. O!.-¡'~ --~_.. Proposed Plat ,," -"AKD!~.2.!'.A;~}5.) 37.0 acres lying between S.W. i'¡f'tl~"'::'~'";'s-:-w. 320th Streets, and between 12th and 16th Avenues S.W. (if both roads were extended) ~~!'..!_9.L_~.££Q.!!..!:1.!£ NO AT .!.Q!!§.: Division's Preliminary: Division's Pinal: Examiner: Approve subject to conditions Approve subject to conditions (modifiedl Approve subject to conditions (modifiedl !'..!'..~.é..!.!'.~!'.:L!'.!.".Q!'.!: The Building and Land Development Division's Preliminary Report on Item No. 38B-25 was received by the Examiner on March 3, 1988. PU8LIC HEAnIN9.: After reviewing the Building and Land Development Division's Report, examining available information on file with the application and visiting the property and surrounding area, the Examiner conducted a public hearing on the subject as follows: The hearing on Item No. 388-25 was opened by the Examiner at 9:00 a.m., March 17, 1968, in Room 654, King County Administration Building, Pourth Avenue and James Street, Seattle, Washington and adjourned at 9:55 a.m. The hearing was reopened at 1:30 p.m., March 31, 19BB, in Room No.1, Eastpointe Plaza, Bellevue, washington and closed at 1:45 p.m. Participants at the public hearing and the exhibits offered and entered are listed in the attached minutes. A verbatim recording of the hearing is available in the office of the zoning and Subdivision Examiner. PINDINGS, CONCLUSIONS' RECOMMENDATION: Having reviewed the ë;ëõ<ëì--in-tï;i~lñãtter;--thëEi("mTnerï,o'w makes and enters the fOllowing: EXHIBIT -.Æ-" 388-25 Page 2 ~§.: 1. General Information: STR: Location: SW 7-21-4 Between S.W. )16th and S.W. 32Dth Streets, and between 12th and 16th Avenues S.W. (if both roads were extended) SR )7.43 acres 105 Ranges from 5,000 to 15,000 square feet Detached sin91e family residences Federal Way Water & Sewer District Federal Way Water' Sewer District No. 39 No.2 1 o Zoning: Acreage: Number of Lots: Typical Lot Size: Proposed Use: Sewage Disposal: Water Supply: Pice District: School District: 2. Except as modified below, the facts set forth in the KIng County Building and Land Development Division's preliminary Report to the Zoning and Subdivision Examiner for the March 17, 1988 public hearing are found to be correct and are incorporated herein by this reference. Copies of the said report will be attached to the copies of this report submitted to the County Council. ), Issues were raised by correspondence directed to the Building and Land Development Division concerning the adequacy of the roads north of the subject property to safely accommodate additional traffic without increased congestion. Roads to the north (primanly 13th Avenue S.W. and 14th Avenue S.W., between S.W. 312th Street and S.W. 316th Streetl, are local access streets without sidewalks. These streets now serve the residential area and Lakota 'Junior IJigh school, located between the subject property and S.W. Jl2th Street. At the March 17,1988 public hearing, the Examiner requested that additional information be furnished concerning the existing and anticipated volume of traffic on the roads north of the subject property, their existing condition and analysis of their safety for vehicles and pedestrians. The evidence provIded when the ~'UbliC hearing was reopened on March 31, 1988 was that the proposed subdivision will not adversely impact the conditions surrounding the school, but will provide some relief of existing congestion by providing an alternative route to the south. Information provided by the King county Department of Public Works', Division of Traffic and planning, was that more trips would be generated southbound then northbound. In their opinion, the congestion which presently exists should be addressed by the Department of Public Works and the school district, as it is not a condition which would be adversely impacted by the proposed plat of Lakota Trails. Similar evidence and conclusions, were provided by the applicant's traffic consultant. Existing and projected average daily vehicle traffic counts for the area indicate present and anticipated levels of service which exceed the minimum requirements of the King County Arterial Road Adequacy Ordinance. "I" ... ,-;'~\ 3 ß ß - 2 5 pa g e 3 4. Construction of 13th Avenue S.W./S.W. 3J7th Street/15th Avenue S.W. through the subject property will provide an additional north-south collector street serving the area between S.W. 312th Street and S.W. 320th Street. A neighborhood collector street requires a 56 foo< wide right-of-way. It normally functions <0 connect two or more neighborhoods and provide a connecting route to arterials. King County Road Standards call for a some'.hat restricted access, with lots to front on local access streets where feasible. See King County Road Standards, Section 2.0J, page 10. D;Sign speed is 35 miles per hour. Due to the existence of extensive wetlands on this property, there is a subStantial constraint on providing local access street or cul-de-sac accesses to the lots which front on the neighborhood collector. However, i< may be possible, when road plans and profiles are submitted, to provide additional "eyebrow. access areas. To the extent that it is feasible <0 do so, such areas would reduce the number of individual access driveways directly intersecting the neighborhood collector street. 5, In the event IL~s"t. ,:A,.,-becomes a portion of iL(egional- stormwater detention facili,ty,...o separate retention/detention facility to serve the "subject property wou ld p'¡'ob'åblY-bècomê-'u;,necessà,y :-"~e,.,_t"J'"" r e UJl,ua.n.J.de.t..en,t.Lon...f,ac,u...i,cy,..t.o--ser ve ,,',he..,sub lec < pr,?pe!.t y maY,..be..).ocated..in,a temporary...."act..established for <hat purpose, .the area of which could be made available'for- addirional residentiaL development at 'such-time as"a," regional facility is established within or incorporating"" Tract "A..' 'The'details of this can be work~d out betwHn the app(icant and the Subdivision Technical Committee. 6. The geotechnical report provided in 1986 indicates subsLantial concerns wUh-..re"s,pe"c.Lto ,p,o,ss,~þl"e" ,erosion,,--- during site development, as well as areas of fill whi~h", must be-addressed"prior' to developmeni:""'rhe"conditions recommended by the Subdivision Technical Committee address ,these concerns. Any site grading proposed to be undertaken beyond the limlls õ"õä'¡¡-ánd-õth'e7ï;¡;t impi?vement"s'(,i.~,'!..~;' lo't'grading) "mu 5 t'::a dhë'r ë'.-:e';; speciLic pCëëautionary, measures ,to assure that.. erosion and,. sedimentation of,on-si,te,and oearby wetlands. and ,w,at~r courses does not occur. ,wO,-"" ..~.-' --..-,,-..,-....-.--- CONC!c'!3.!.Q!:!'~: 1. " The preponderance of the evidence is that the proposed development will 'not have adverse impacts upoo traffic congestion or the safety of pedestrian and vehicular traffic in the area lying between the subject property and S.W. 312th Street. ThIs conclusion is based upon the uncontroverted expert testimony that the proposed development will provide an alternative route to the affected area which will more likely reduce traffic volume at the intersection of 14th Avenue S.W. and S.W. 312th Street than increase it. In the event the projections and analysis of impacts proves incorrect, the primary responsibility for resolving congestion and safety concerns that exist in the area is that of the Kin9 County Department of Public Works, rather than the proponent of this development. 38 B -2 5 Pa ge 4 2. If approved subject to the conditions recommended below, the proposed subdivision will comply with the goals and objectives of the King County Comprehensive Plan, Federal Way Community Plan, Subdivision and Zoning Codes, and other official land use controls and policies of King County. J. If approved subject to the conditions recommended below, this proposed subdivision will make appropriate provision for the public health, safety and general welfare and for drainage ways, streets, other pubiic ways, water supply, and sanitary wastes; and it wiLl serve the public use and interest. 4. The conditions for final plat approval recommended below are in the public interest and are reasonable requirements. 5. The dedications of land or easements within and adjacent to the proposed plat, as recommended by the conditions for final plat approval or as shown on the proposed preliminary plat submitted by the applicant, are reasonably necessary as a direct result of the development of this proposed plat, .!!.ECOM~~: ~~~~:H~'~-?:'¿~1~;H:~~t:~YiL~ia8~,\t~~~.~~. ~~.a.~~:..as. - ~!l?_~.i.~.3':_<i.;;.nÚJ.ion~: for:.:.f.i.na.l..pl-at-approv'al: -ì ~;..l I. Compliance with all platting provisions of Title 19 of the King County Code. 2. All persons having an ownership interest in the subject property shall sign on the face of the final plat a dedication which includes the language set forth in King County Council Motion No. 5952. J. The area and dimensions of all lots shall meet the minimum requiremeots of the SR (7200) zone classification or shall be as shown on the face of the approved preliminary plat, whichever is larger. (Minor revisions may be considered.1 All construction and upgrading of public and private roads shall be done in accordance with the King County Road Standards established and adopted by Ordinance No. 8041. To the extent reasonably feasibc¡e, individual driveway accesses directly onto JJth Avenue S.W./S.W. Jl7th Street/15th Avenue S.W. shall be minimized by the use of additional eyebrows. 5. If an area-wide fire protection assessment is authorized by King County prior to final recording of this plat, this plat shall be subject to any assessment provided by that ordinance. 6. The applicant must obtain the approval of the King County Fire Marshai for the adequacy of the fire hydrant, water main, and fire fiow standards of Chapter 17.08 of the King County Code, 7. Final plat approval shall require full compliance with drainage provisions set forth in King County Code 9.04 and current storm drainage requirements and guidelines as established by Surface Water Management. Compliance may result in reducing the number and/or location of lots as '68-25 Page 5 shown on the preliminary approved piaL The following conditions represent portions of tho Code and requirements and shall apply to all plats. See Attachment "A', dated Aprill,19BB. -- 8. Due to the erosion hazard, clearing shall be limited to those areas required for construction of roadways and utilities prior to recording. These...clear.ing. limits can be expanded with the prior approval of the 8uilding and Lan" Development Division. Any expanded clearing limits must include an appropriate ,9.rAdlng..p.!J',n...j!nd temporary _e r os i on/s ed.imen t.at ion"'c'on-trol"p'l'a,,'.>-- ------.., 9. The applicant can satisfy the King County retention/detention requirement (KCC 9.04.050.BJ by either of the following methods: ~-;:::::::. 10, Prior to road and drainage plan approval, the applicant may join into an opportunistic agreement with King County Surface Water Management Division, King County Building and Land Development Division, and others in developing Lower puget Sound Wetland No.9 into a regional detention facility. The final road and drainage plans shall reflect the terms of the agreement. The regional facility shall be constructed and functional prior to final recording of the subdivision (KCC 9.104.090.CI. b. If the agreement described above cannot be made or fulfilled, the final road and drainage plans shall reflect the standard King County detention requirements for subdivisions. Since thè revised plat received Pebruary 16, 19B8 does not show individual tracts for detention, applying the standard subdivision detention requirements may result in a reduction in the total number of lots within the subdivision. c, If Lower Puget Sound Wetland No.9 is not established as a regional detention facility prior to the recording of this plat, the individual tract or tracts provided for detention of storm water from the subject property may be identified as temporary detention tract(sl, so that their ownership and availability for residential lot development could revert to the property owner at such time as a regional detention facility is e-stablished utilizing the said wetland, in a manner which adequately serves the retention/detention requirements for the subject property. Details shall be worked out with the Subdivision Technical Committee. If the storm water runoff is to be controlled by standard on-site subdivision facilities, and not by a regional facility, then no retention/detentionfacility shall be located within any stream, wetland, or natural drainage feature, unless approved by the King County wetland specialist and the drainage review engineer. Two inventoried wetlands (Lower puget Sound Wetland No, 9 and No. 211 and one uninventoried wetland are locat.d within the propose" subdivision. To protect the wetlands and the adjacent property, the following conditions shall be satisfied: II. 12 . ) 0 8 - 2 5 Pð ge 6 a. Pollowing the completion of ð professional wetland study and subject to the review and approval of the King County wetland specialist, the wetlands plus a 50 foot huffer shall he designated as a Native Growth Protection Easement (NGPE). An additional 15 foot building setback line (BSDLI shall be delineated adjacent to <he wetland buffer. b. Poll owing the completion of a 25 year floodplain study and subject to the review and approval of the King County review engineer, the boundary of the 25 year floodplain with a 15 foot 8saL shall be shown on the final road and drainage plan. c. Each wetland and its associated buffer shall be designated within a separate tract. d. The greater of the setbacks described above shall dictate the final BSBL. e. All roadway storm water shall pass through ð oil/water separator, and at least 200 feet of biofiltration before outfalling into any wetland. In addition to the wetlands, three areas of ponding water are located within the proposed subdivision. Their approKimate locations are shown on the revised plat received Pebruary 16, 1988 in the vicinity of Lots 8-13, Lots 74-76 and 80-82 and Lots 29-41. The following conditions shall be satisfied: a. The boundary of each ponding area shall be ---- located by a licensed land surveyor, flagged in the field and shown on the final road and drainage plan. 13, b. The road and drainage plans shall include a proposed filling, grading and dewatering plan for these areas. c, Full compensation shall be provided for the displaced storage. .--- The revised plat received rebruary 16, 1908 shows the location of the existing drainage course between Lower puget Sound Wetland No. 21 (Tract 'B') and Lower puget Sound Wetland No.9 (Tract 'A'). The following condi,ions shall be satisfied with respect,.>'o this drainage course. a, /' A supplemental soils report prepared by a professional geotechnical engineer shall be submitted with the road and drainage plans and include the following items: i. Rscommendations for backfilling the existing channel, including surface preparation, backfill soil specifications, compaction reguirements, compaction methods and inspection p,ocedures. 7' i Recommenda'ions for suPPOrt of buildings, roadways and utilities which are constructed on or across the backfill. 14. b. 388 -2 5 Page 7 The final road and drainage plan shall include a stream realignment and enh,ancement plan. The plan shall be prepared jointly by a professional biologist specializing in riparian enhancement and professional engineer specializing in open channel hydraulics, The plan shall include the following items: i. The final drainage course shall reflect the character of a natural stream and shall maximize the use of existing vegetation. ii. i i i. i v. v. The final drainage course shall not lower the existing outlet of Lower puget Sound Wetland No.2!. The final drainage course shall be designed to convey the 100 year design storm. The final drainage course shall be located within a separate tract(s) shown on the final road and drainage plan and map page. The tract shall be a minimum of 60 feet in width, with the boundary of the tract located a minimum of 15 feet away from the top of each stream bank, The final road and drainage plan and map page shall designate the tract(sl as a drainage easement and NGPE. c. Where S.W. Jl7th Street crosses the drainage course, conveyance shall be provided for the 100 year design storm. A natural drainage course traverses the proposed subdivision in the vicinity of Lots 46-50 as shown on the revised plat received Pebruary 16, 1988. To protect this natural drainage course, the following conditions shall be saUsified, a. "...." The centerline of the drainage course shall be located by a licensed land surveyor and flagged in the field. b. The boundary of the 25.year floodplain of the dralnage course shall ¡;-~ determined by the applicant's engineer and submitted to the 8uilding and Land Development Division review engineer. The boundary of the 25 year floodplain shall be design.ated on the final road and drainage plan and map as a NGPE. The NGP.E shall be a minimum of15feetinwidth. c. d. The NGPE shall not be divided longitudinally by proi>ècEylines, as shown on the revised plat. The NGPE areas shall be located entirely within backyard areas of individual lots. Ali lots containing ~shall have a minimum lot depth of 115 feet. ..\ e. 15. J 8 8.. 2 5 Page 8 f. An additional 15 Eoot BSßL shall extend Erom ,he NGPE. The BSBL shall be designated on the flnal road and drainage plan and map page. g. A cross culvert sized to convey the 100 year design storm shall be provided where 12th Place S.W. crosses the drainage course. As indicated by the geotechnical report dated February 16, 1988, a ground and surface .water regime exists between Tract 'C' and Tract 'ß. as shown on the revised plat received Pebruary 16, 1908. This regime may impact the integrity of 12th Place S.W. and Lots 51-57 and Lot 61. An additional geotechnical report shall be submitted with the road and drainage plans which includes the Eollowing: a. Specific recommendations detailing the proposed construction oE u12Ù."Place.s.;ï,,;---' -- .,--.-.'-----.- b. Specific recommendations detailing a proposed filling, grading and dewatering plan which will ensure the integrity of the lots within the vicinity. c. Specific recommendations detailing a surface and ground water conveyance system in this vicinity. d. Specific recommendations which will ensure that proposed design will not alter the existing hydraulic regimes which currently maintain the wetlands within Tract 'c' and Tract.B'. The final design shall be subject to tho review and approval oE the Building and Land Development Division geologist and review engineer. 16. As indicated in the preliminary site geotechnical report (dated January 19861, surface water, ground water, fill and fine grained soils characterize portions of the site. ,An additional geotechnical report shall be submitted WhlCh includes the following: a, A detailed evaluation of subsurface conditions at the location of proposed roadways, buildings and utilities. b. Site specific recommendations detailing a proposed Eilling, grading and dewatering plan which will ensure the Integrity oE future roadways, buildings and,'utilities. The geotechnical report shall be reviewed by the Building and Land Development Division geologist and review engineer, The final recommendations as mOdified by the Building and Land ßevelopment Division shall be reflected In the final road and drainage plans. 17. The following statement shall be shown on the final drainage plan and map page. -"-.'!i.!.<!J.!'..'!~~~~i !!~li::'..".-"£!'.~~!,-£otecti~~~ Structures, fill and obstructions (including, but not limited '0 decks, patios, outbuildings, or overhangs beyond 18 inchesl are prohibited within the buildin9 setback line (8S8LI and restricted Eloodplains liE applicablel, and within the Native Growth Protection Easements(s) as shown. 380-25 Page 9 Dedication of a Native Growth Protection Easoment (NGPE) conveys to the public a beneficial intereH In the lànd within the eàsement. This interost includes the preservation of native vegetation for all purpose' that benefit tho p"blic health, safety and welfare, including control of surface water and erosion, maintenànce of slope stàbility, visllàl ànd aural buffering, and protection of plant ànd animal habitàt. The NGPE imposes upon all present and f"ture owners ànd occupiers of the land subject to the eàsement, the obligation, enforceàble on behàlf of the public by King County, to leave undisturbed all crees and other vegetation within the easement. The vegetation within the easement MY not be cut, pruned, covered by fill, removed or daffiàged without express permission from King County, which permission must be obtàined in writing from the King County Building and Lànd Development Division or its successor agency. Before and during the course of any grading, building construction, or other deveiopment activity on à iot subject to the NCPE, the common boundary between the easement and the area of development activity must be fenced or otherwise marked to the satisfaction of King County. 18.A The following statement shall be shown on the final map: "Part or all of the lots created within this subdivision are designated as being in a Class III seismic hazard area. A special geotechnical report may be required through the sensitive area review process at the time of building permit application to address foundation stability." 18.8 In the alternative, areas of fill and/or organic soils ..---.......-"Shall be removed and replàced with structuràl fiil, to provide à suitable building site on each lot, approved by the applicant's geotechnical consUltant and the Building and Land Development Division. The suitable building site on each of the affected lots may then be identified on the £J..at, with improvements restricted to that site. .JJ-- Street illumination shall be provided at the intersection of S.W. 320th 1¡treet and 15th Avenue S.W. in accordance with KCRS .5~'Š:.." .".,.-.....- ".---'-". 2 0 . The revised plat submitted Febru,ary 16, 1988 shows a road access stub near Lot 51. The final road and drainage plan shail provide a storm wat.e.r...c.o.on.e.c..t.i.gn ~tub to pr<>'"-Í.de for potential future 'devei'opment. "" 21. There shall be no direct vehicular access to or from S.W. 320th Street from those lots which abut it. /'Ç\ A temporary cul-de-sac shall be provided àt the east ~ terminus of the stub street in the vicinity of LO~ and 51. ~ 23. Provide planter islands in the "eyebrows." The planter islands within the cul-de-sac/eyebrows shall be maintained by the abutting lot owners. This shall be stated on the face of the final plat. 24. The right-of-way for stubbing the Street to the eaH property line in the vicinity of Lots 49-53 shall be widened to 40 feet. J 0 8 - 2 5 Page 10 25. 12th Pla.ce S.W. shall be shortened approximately 150 feet and the lots in the vicinity redesigned accordingly. The redesign must be reviewed and approved by the Subdivision Technical Committee prior to plan and profile approval. 26. A fence designed for longevity and noise attenuation shall be constructed along the south boundary of lots adjacent to S.W. 320th Street. The design shall be submitted for r.eview and approve by the,rûTT<¡-¡ñ< ãniil:ãñ"õ!õev';';opm;'-nt"'. Divis;òn';""-."."'---""'-""-----'.'-"-'..-'.-."--"-----... ..-..-.' ........".,.. 27. A Homeowners Association or other workable organization "';'--' sholl be established to the satisfaction of the Buildlng and Land Development Division which provides for the ownership and continued maintenance of the open space ar.a(sl. 28. If lot make-up area is required, calculations demonstrating compliance, including the provision of sufficient flat, dry, usahle open space, must be submitted prior to approval of the plan and profile. (This requirement is separate from and in addition to open space required in KCC 19.)8). The wetland buffers and drainage tract connecting Tracts .A' and 'B' may be used for density purposes. 29. The applicant shall comply with KCC 19.38 concerning dedication or payment of a fee-in-lieu of providing on-site open space, In the event a portion or all of the proposed Tract 'A' is conveyed to King County for use as a regional storm water detention facility, the area so conveyed shall be excluded from the plat area for the purpose of meeting the requirements of this condition. 30. All lots adjoining an area or having area with a NGPE restriction shall be provided with an acceptable boundary delineation between the lot or portions of the lot and the area restricted with the NGPE. Said boundary delineatlon shall be in place prior to any grading or clearing of the subdivision and remain in place until a dwelling is constructed on the lot and ownership transferred to the first owner-occupant, 31. The rear lot lines for lots adjacent to the wetlands and drainage channel shall be clearly indicated on the final plat as the edge of the wetland buffer. 32. The following have been established by SEPA as necessary requirements of this development, as mitigation. The applicant shall demonstate compliance with these items prior to final approval. a. pay a pro-rata share of improving S. 312th between Highway 99 and 23rd Avenue S. (The share ...Ü-$..1.1..L237.00, based on 105 lots. The amount shall be adjusted if the lot count changes). b, Wetlands - ~ Condition No, 11 Drainage channel - ~ Condition No. 13. ORDERED this 13th day of April, 1980. Q ?lC'(2 ~ ~5 0' conioo-"":~-~ zoning ùnd Subdivision Exùminer � � 388-25 Page 11 TRANSMITTED this 13th day of Apcil, 1988, by certified mail, to the following parties of record: S. J. (Steve) Fersch Chcistophec Brown Rittenhouse-Zeman & Skip Nolman Lance Mann Cecilia Wheeler Claudia V. Rasmusson Jeanne eurbidge/SUe Pac-Tech Engineers, Inc. Shapiro & Associates Assoc Linda Du[rischte[ Cary F[edrickson Bob Scholes Lawrence C. Danielson Cary S Ji1L Childs Wells Michael Mizumoto TRANSMITTED this 13th day of April, 1988, to the following: Lisa Pringle, euilding and Land Development Division Tom eertek, euilding and Land Development Division Joe Miles, Building and Land Development Division Pete Hayes, Wallace b Wheeler Mary Duckan Pat Freitag Soil Co�servation District Dept. of Wildlife C[egocy M. Bush, METRO Fedecal Way School Dist. Gary Samek, Department oE Public Works Lakota PTA, Lakota Junioc High School Jeanette Veasey, Ring County Parks NOTICE OF RICHT TO hPPEAL In ocder to appeal the recommendation of the Examiner, written notice of appeal must be filed with the Cleck of the King County Councfl with a fee of $50.00 (c e�k,w,pa�abl_e, to County OfFice of Finance) on or before�PRII,,....2.7.,,..1.988,;., If a notice of appeal is filed, the original and 6 copies of a written appeal statement specifying the basis for the appeal and argument in support of the appeal must be filed with the Clerk oE the King County Council on or before MAY 4, 1988. If a wcitten notice of appeal and Eiling Eee are not filed within 14 calendar days of the date of this report, or if a written appeal statement and ar9ument are not filed within 21 calendar days oE the date of thts report, the Clerk oE the Council shall place a propoaed ordinance which implements the Examiner's recommended actton on the agenda oE the next available Council meeting. ' Filing requlres actual delivery to the OEfice of the Clerk of the Council, Room 403, King County Courthouse, pcior to the close of business (4:30 p.m.) on the date due. Prior mailing is not sufEicient if actual receipt by the Clerk does not occur withtn the applicabTe time period. The Examiner does not have authority to extend the time period unless the OfEice of the Cleck is not open on the specified closing date, in which event delivery prior to the close of bustness on the next business day is sufficient to meet the filing requirement. Action of the Council Final. The action oE the Council appcoving or adopting a recommendation of the Examiner shall be final and conclusive unless within thirty tJ0) from the date of the action an agrieved party or person applies Eor a writ of certiorari Erom the Superior Court in and for the County of King, State of Washington, for the purpose of review of the ac:ion taken. 380 - 2 5 p, g e 12 MINUTES OP THE MARCH 17, 1988 AND MARCil )J, 1988 PUBLIC HEARINGS ON 8ALD PILE NO. 388-25 - LAKOTA TRAILS James N, O'connor was the hearing examiner in this matter. Participating in the hearings were Lisa Pringle and Tom Bertek, representing the 8uilding and Land Development Division, Christopher 8rown, S.J, (Steve I Fersch, and Michael MlZumoto. The following exhibits were offered and entered into the record: Exhibit No. 1 Exhibit No. 2 Exhibit No, 3 Exh i bit No. 4 Exhibit No. 5 Exhibit No, 6 Ex h i bi t No. 7 Exhibit No. B Exhibit No. 9 Exhibit No. 10 Exhibit No. 11 Ex h i bi t No. i 2 Exh i bit No. 13 Exhibit No, 14 Exhibit No. 15 Exhibit No. 16 Exhibit No, 17 Ex h i bit No. 18-1 Exhibit No, 18-2 Entered 3/3/88 Ex h i bit No. 19 Ex h ib i t No. 20 JNO'C:hlm 31510 Staff report .3/17/88 Application 11/17/87 Enviconmental CheckliÙ ll/17/87 Mitigated Determination of non-significance 2/17/88 Affidavit of Posting received 2/12/88 Revised plat 2/16/88 Letter from Dept. of Wildlife 2/25/88 Letter from METRO 2/26/88 Letter from Pederal Way School District 2/29/88 Letter from 8urbridge/Wells 2/8/80 Letter from Lakota PTA 3/5/88 Letter from King County Parks Dept. 3/i6/88 Wetland .study - 1/30/86 Wetland study addendum - 3/9/88 Geotechnical Assessment. - January 1986 Geotechnical Assessment - pebruary 16, 1988 Traffic study - 8/19/87 Alternative plat design Alternative plat design Memo from Gary Samek to Paulette Norman 3/23/88 Letter to Steve Pertch from C.V, Brown 3/31/8B ~I a. b. c. d. e, f. 4 -1-88 ~~.u_~ Standard Storm Drainage Requirements (Portion Only) BALD a'Pproval of the drainage and roadway plans is required prior to any conStruction. A separate ESe plao for this project shall be submitted with the engineering plans. The plan shall show areas to be cleared (limits of clearing) and provide a schedule for construction (construction sequencel. Retention/detention (R/D) facilities shall be located in tracts, unless located within improved King County rights-of-way. Maintenance access shall be provided to all facilities. This will require a 15-foot access roadway to all manholes (R/D). Access must also be provided for maintenance of the entire pond, Prior to reèording of the final plat those portions of the retention/detention facility necessary to control the flows discharging from the site shall be constructed and operational, Oil/water separation facilities shall be provided at each point of permaoent storm drainage release from the site so contaminants do not enter natural drainage features. In addition to Standard King County oil/water separators, the applicant is required to provide biofiltration prior to discharge of stormwater into any sensitive area (e.g., streams, wetlands, lakes, etc.). Such biofiltration includes 200 feet of broad, flat-bottom, grass-lined swales, or equivalent systems. Drainage outlets (stub-outs I shall be provided for each individual lot, except for ,hose lots approved for infiltration by King County. Stub-outs shall be shown on the engineered plans and shall conform to the following: 1. I Each outlet shall be suitably located at the lowes< elevation on the lot, so as to service all future roof downspouts and footing drains, driveways, yard drains, and any other surface or subsurface drains necessary to render the lots suitable for their intended use. Each outlet shall have free-flowing, positive drainage to an approved stormwater conveyance system or to an approved outfall location. 2. Outlets on each lot shali be located with a five-foot-high, 2' x 4' s<a'ke marked 'storm' or 'drain'. The Stub-out shall eXtend above surface level, be visible and be secured to the stake. J. Pipe material shall conform to underdrain specifications described In KCRS 7.04 and, if non-metallic, the pipe shall contain wire or other acceptable detection feature. 4. DrOlnage easementS are requlCed for drainage sYStems designed to convey flows ,hrough individual lots. 5. The developer and/or contractor is responsible for coordinating the location of all stub-out conveyance lines with respect to the utilities (e.g., power, gas, telephone, ce1evision). 6. All individual stub-outs shall be privately owned and maintained by the lot homeowner. g. In some cases, on-site infiltration systems may be accepted for detention for the lots depending on soil conditions. To determine the süiLãbility of the soil for infiltration systems, a soils report that includes percolation tests and a soil log taken at 6-foot minimum depth shall be submitted by a professional engineer or soil specialist. This shall include, at a minimum, information on soil texture, depth to seasonal high water and the occurrence of mottling and impervious layers. The report shall also address potential down gradient impacts due to increased hydraulic loading on slopes and structures. Soil permeability data obtained from the design of the septic system may be used for the drywell retention system, provided data is submitted verifying that no impervious layer exists withio 6 feet of the soil surface. If the soils report is approved, the infiltration systems shall be installed at the time of the building permit. A note to this effect shall be placed on the map page of the recorded document. The drainage plan and the recorded document shall indicate each lot approve for infiltration. h. Include with the drainage plan a downstream analysis, This analysis must extend for a minimum distance of 1/4 mile from the point of release of each flow discharging from the site. The analysis must address any existing problems with flooding, capacity, overtopping, scouring, sloughing, erosion and sedimentation of any drainage facility, whether natural or man-made. Probable impacts due to construction of the project must also be addressed with respect to these same concerns. Where this analysis reveals more reStrictive conditions, more stringent drainage controls may be required than would otherwise be necessary for a project of this type. These controls may include additional on-site rate and/or volume controls, off-site improvements, or a combination of both. Any off-site improvements will require the approval of all affected property owners. i. Current standard notes and ESC notes, as established by BALD eogineering review, shall be placed on the engineered plans, j, The followiog ootes shall be provided 00 the map page of the recorded document: 1. For all lots: 2. .All building downspouts, footing drains and drains from all impervious surfaces such as patios and driveways shall be connected to the approved permanent storm drain outlet as shown'"lon the approved conStruction drawings I' on file with the Department of Public Works. The plan 'or these connections shall be subm1<ted w1th the applicat'on for aoy building permit. All connections of the drains muse be conStructed and approved prior to the final buil~ing inspection approval.' Por any lots approved for ,nd,vidual infiltration: 'Individual lOt infiltra"on syseems shall be constructed at the time the residence is constructed and shall comply with plans on file at the Public Works Record Center.' ) 0 4 5 0