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Home My WebLink AboutPermit 1713 - Kinnear KenLEGAL DESCR. LOT NO. BLOCK TRACT (XI SEE ATTACHED SHEET OWNER Ken Kinnear PHONE ADDRESS P.O. Box 66558 Seattle, Washington ZIP 98166 CONTRACTOR Coast Construction Company PHONE 243 -0300 ADDRESS 652 S.W. 143rd Seattle, Washing on ZIP 98166 LICENSE NO. CO- AS- TC- C288BE SST NO. C500- 058 -780 TYPE CONST. OCC. GROUP OCC. LOAD FIRE ZONE USE ZONE AUTO SPRINKLERS REQ. VN B2 -B1 300 3 C1 (YES 0 N 1. Driveway 2. OK to 3. Roof 4. OK to 5. Wall- 6. Structure approach and pour footing sheathing enclose board complete and/ slope and /or and nailing framing nailing or OK to foundation OK OK occupy I I I, BUILDING PERMIT DATE OF ISSUANCE JOB ADDRESS BUILDING USE CLASS OF WORK X] NEW 0 ADDITION ❑REMODEL 0 REPAIR ❑OTHER (Specify) BLDG. AREA I CER THAT MET, NE COMMENTS: June 5, 1979 Boulevard Office CITY OF TUKWILA 6200 SOUTHCENTER BOULEVARD TUKWILA, WASHINGTON 98188 EXPIRES 1st FL. 16347 2nd FL. 16995 R / AGENT SIGNATURE BASEMENT 1917 GARAGE 15078 DECK TIFY THAT THE ABOVE INFORMATION IS TRUE AND CORRECT, THE APPLICABLE CITY OF TUKWILA REQUIREMENTS WILL BE AND THAT I AM AN AUTHORIZED AGENT FOR THE PROJECT. MEZZANINE FEE DISTRIB. # OF STORES 2 /BBmt. TOTAL S.F. 50337 BUILDING PLAN RVW. DEMOLITION BOND OTHER Sepa Demo. TOTAL THESE INSPECTIONS ARE REQUIRED BY LAW FOR INSPECTION CALL 433 -1849 BUILDING OFFICIAL, CITY OF TUKWILA PERMIT NUMBER October 7, 1979 v.. .. w w — ..- .. .... a. 1 ..••• n r A /1 A ....- n i1 r\ w 1 A .1 • A 1 11/11 V/ /. I I 11.11 I I I P1 111 1 M 1713 VALUATION $ 1,225,000 1,612 1,04E 5C 2,71E LEGAL IESCR. LOT NO. BLOCK TRACT 0] SEE ATTACHED SHEET OWNER f Ken Kinnear PHONE ADDRESS P.O. Box 66553 Seattle. Washington ZIP 98166 CONTRACTOR Coast Construction Cornt»nY PHONE 243 -0300 ADDRESS 652 S.W. 14:3rd Sea.tt1o, WaI;hiinrltov) ZIP W1r>fi LICENSE NO. CO-- AS- TC- .C2B83E SST NO. C500-058-7M, TYPE CONST. OCC, GROUP OCC. LOAD FIRE ZONE USE ZONE AUTO SPRINKLERS REQ. VN B241 300 i Cl ( (YES ❑NO 1. Driveway approach and slope 2. OK to pour footin g ' ` and /or 1,` foundation' L ' ' 6 /' � ' 3. Roof sheathing/ g � : and Wallin$;' OK / ` 4. OK to enclose ,, framing' / ` /(' s„ 5. Wall- board nailing OK ,f ' .' (.. 6. Structure complete and /t or OK to :�{ occupy r" 4 . 7 7( r ; 1`; BUILDING PERMIT DATE OF ISSUANCE JOB ADDRESS BUILDING USE CLASS OF WORK BLDG. AREA I CER THAT MET, OWNE COMMENTS: ... Aunt' 5, 1979 6300 Southcenter Boulevard Office CITY OF TUKWILA 6200 SOUTHCENTER BOULEVARD TUKWILA, WASHINGTON 98188 KNEW 0 ADDITION ❑REMODEL 0 REPAIR ❑OTHER (Specify) EXPIRES 1st FL. 16347 2nd FL, 1(x995 R / AGENT SIGNATURE BASEMENT 1917 GARAGE 15()72 DECK TIFY THAT THE ABOVE INFORMATION IS TRUE AND CORRECT, THE APPLICABLE CITY OF TUKWILA REQUIREMENTS WILL BE AND THAT I AM AN AUTHORIZED AGENT FOR THE PROJECT. MEZZANINE FEE DISTRIB. # OF STORES 2/C Smt. TOTAL S.F. 50337 BUILDING PLAN RVW. DEMOLITION BOND OTHER Sepia Demo. TOTAL THESE INSPECTIONS ARE REQUIRED BY LAW FOR INSPECTION CALL 433 -1849 BUILDING OFFICIAL, CITY OF TUKWILA PERMIT NUMBER 1 r 13 October 7. 1979 moo" . • i- w- — w . .. — . .. . 41.1.• w •••• .1 /1 A-.- Ia A A /1 . .01111 . w . . 01 . . A . \ I /1 ..1 /1 . I . r\ a a a /\ VALUATION 1.?25 1,61: 1,04f C 0 AoJ 1 DATE April 9, .1979 !PERMIT NO. WHEN VALIDATED EXPIRES JOB ADDRESS 6300 Southcenter Blvd., Tukwila, Washington LEGAL DESCR. LOT NO. BLOCK TRACT ® SEE ATTACHED SHEET OWNER Ken Kinnear PHONE ADDRESS P.O. Box 66558, Seattle, Washington ZIP 98166 CONTRACTOR Coast Construction Co. PHONE 243 -0300 ADDRESS 652 S.W. 143rd, Seattle, Washington ZIP (ifsi ( � / (Q { - LICENSE NO CO- AS- TC- C288BE • S ST NO. C 500 - 058 -780 BUILDING USE Office Space TENANT CLASS OF WORK X NEW D ADDITION ❑ REMODEL ❑ REPAIR 0 OTHER (Specify) BLDG. AREA 1st FL. 2nd FL. BASEMENT GARAGE DECK MEZZANINE = OF STORES TOTAL S.F. VALUATION 16347 16995 1917 15 b-r' OTHER ^' c ,� �.�t -- 2 /Bsmt. 1 $1,225,000. NAME OF APPLICANT (PLEASE PRINT) El Baylis Associates /Architects (Agent) Brian Brand - Representativ ADORE S$ 500 108th Ave. N.E., Bellevue, Wash., 98004 PHONE 454 -0566 I CERTIFY THAT THE INFORMATION FURNISHED BY ME IS TRUE AND CORRECT AND THAT THE APPLICABLE CITY OF TUKWILA REQUIREMENTS WILL BE MET. ./ �.. // //.,/ %/. . _ / •.,:--- �.( I� �ATUAPPLICANT ,PPLICATION FOR PERMIT BUILDING DEPARTMENT CITY of TUKWI LA 6200 SOUTHCENTER BOULEVARD TUKWILA, WASHINGTON 98188 433.1849 0 NOT WRITE BELOW THIS LINE RECEIVED CITY OF ¶UKVVILA ►� it,11319 BUILDING DEPT. TYPE CONST. OCC. GROUP OCC. LOAD FIRE ZONE USE ZONE AUTO SPRINKLERS REQ. 13.2 " 81 3 0 0 ..3 C I jVYES ONO ./1,/ PLAN RVW PLANS: SENT RETURNED APPROVED FEE DIST RI B.. ^ BUILDING 16 (Ar c FIRE DEPT. 1.-I _ I I r� l PLAN RVW. P/) / CUB -if r 0 () DEMOLITION PLANNING/ SEPA ( I • �- 25 O3 1 + , BOND OTHER ^' c ,� �.�t -- J , �r� o cif. '7 )5%00 PPUBLIC WKS. y ti� q TOTAL RECEIPT NO. 1 c) COMMENTS: APPROVED FOR ISSUANCE BY: )3`7 s1(i/ o o `-. 16 r a . 6.0 .-s3 /6g'5 c'-1I -7 ,PPLICATION FOR PERMIT BUILDING DEPARTMENT CITY of TUKWI LA 6200 SOUTHCENTER BOULEVARD TUKWILA, WASHINGTON 98188 433.1849 0 NOT WRITE BELOW THIS LINE RECEIVED CITY OF ¶UKVVILA ►� it,11319 BUILDING DEPT. . air , U.LDL4 APP!:OV T'?" C.71.! T ...a:fl'J ..,........, .... OF •TUKWIIA . 3 C.' .PTM_NT =D NU:TION $U91!CT TO 11 tUOT:J IN'+tED' ...... .....a ... T, . :UP-'••: .: ,; . ti .. DATE ' • '- - • DEPT. - INITIA : C'I'E 'R I •' . PUBLIC WORKS I E; ! .D!' +13 DEPT. RECEIVED 4. iwso boa Edgar D. Bauch • City of Tukwila Mayor , F ire Department Al Pieper Building Department City of Tukwila Dear Al, Hubert H. Crawley Fire Chief Fire Prevention Bureau April 13, 1979 Re: Tukwila Office Bldg. In reviewing the above mentioned project plans, please note the following: 1. Fire dampers required per UBC Standard #43 -7 (if applicable). 2. Maintain sprinkler protection for all enclosed areas. (Includes under stairways) 3. Per UFC Sec. 10.104(b), "All doors in or lead- ing to exits shall be maintained openable from the inside without the use of a key or any special knowledge or effort at all times when the building or area served thereby is occupied." 4. Per UFC Sec. 10.113, "At every required exit doorway, and wherever otherwise required to clearly indicate the direction of egress, an exit sign with letters at least 6 inches high and readily distinguishable shall be maintained." 5. Walls to be fire stopped per UBC Sec. 2517(f). 6. Where attic spaces are fully sprinklered, attic spaces formed of combustible construction shall be divided into horizontal areas not exceeding 9000 square feet by partitions extend- ing from the ceiling to the roof. 7. Hose stations are required per City Ordinance #730. 8. Fire extinguishers shall be provided per NFPA #10, as a minimum requirement. Install nine 21/2 gallon pressurized water units and nine 2A -10 B:C "All - Purpose" dry- chemical units. 9. Per NFPA requirements, extinguishers with a gross weight of 40 pounds or less shall be hung so that the top of the extinguisher is not higher than 60 inches above the floor. City of Tukwila Fire Department, 444 Andover Park East, Tukwila, Washington 98188 (208) 575 -4404 Al Pieper Page ' 2 ,- Fire Prevention Bureau April 13, 1979. Tukwila Office Bldg. 9. 'cont'd. Extinguishers weighing more than 40 pounds, shall be hung so that the top of the unit is not higher than 42 inches above the floor. Extinguishers shall be located so as to be in plain view (if at all possible). If not in plain view, they shall be identified with a sign 'stating, "FIRE EXTINGUISHER" with an arrow pointing. 10. Protective guard posts or curbs are required around all gas meters, electrical vaults, sprinkler valves and hydrants. Finished grades of parking lots and driveways shall not exceed 15 %. R:l'ease include these comments in your review of the above mentioned project. 'Yours very truly, May 24, 1979 Al Pieper, Building Official City of Tukwila 6200 Southcenter Boulevard Tukwila, WA 98188 Dear Mr. Pieper: Subject: Office Building 6300 Southcenter Blvd. Tukwila, WA LESTER J. GILLIS BUILDING PERMIT CONSULTANT 13560 Sherman Road N.W., Seattle, Washington 98177 (206) 363 -4779 I have checked the plans for the above building in accordance with the 1976 edition of the Uniform Building Code and the Washington State Requirements for Barrier Free Design. Here are my findings: 1. Oil separator or trap is required in parking area, Sec. 1102(b). 2. Basement one -hour ceiling should be in conformance with ICBO Research Recommendation #PFC 1694 when installed with truss - joists. 3. Lighting fixtures must be surface mounted on basement ceiling or pro- tected in an approved manner. 4. Draft stops should be provided in floor system every 1000 square feet, Sec. 2517(f)2. 5. Draft stops should be provided in attic system every 9000 square feet, Sec. 3205(b). 6. Roof scupper locations and quantity are not shown. The roof slopes four inches towards the middle. If scuppers are located at the high point and as shown on sheet A -11, eight inches of water will accumulate before scuppers can function. Roof is designed for five inches of water. 7. First floor lobby door should swing in direction of exit, Sec. 3303(b). 8. Doors to stairways in basement must be equipped with signs - "THIS DOOR TO REMAIN UNLOCKED DURING BUSINESS HOURS ", Sec. 3303(c). 9. One -hour enclosure is required on Core #1 stairway. Provide one -hour fire resistive self - closing or automatic closing doors at first and second floors, Sec. 3308(c). Al Pieper May 24, 1979 Page Two 10.. Wire glass relights should be provided in lower lobby wall openings, Sec. 3304(h). 11. Threshold guards should be provided on elevator shaft, Rule 110.10a, ANSI Elevator Code. 12. Elevator should comply with Sec. 5103(a), (d) and (e). 13. Exit illumination should be provided and also illuminated Exit sighs,, Sec. 3312(a), (b) and (c). 14. Barrier Free Regulations: A. Elevator shall comply with Sec. 5515 (c), (d), (e), (f), (g), (h) and (i). B. Vision panels in doors to be no more than 40" above the floor, Sec. 5406. ▪ Hardware shall be provided as required by Sec. 5501 (a), (b), (c) and (d). D. Signage shall be provided on parking spaces and route of travel, Sec. 7501 (m) and 5505 (a). . Required parking spaces shall be located nearest to the primary entrance, Sec. 7503 (b). I am returning one set of marked architectural drawings and two sets of corrected structural drawings. Please feel free to call me if you have any questions regarding these corrections.' Ken Kinnear P.O.. Box 66558 Seattle, Washington 98166 City of Tukwila Building Division 6200 Southcenter Boulevard Tukwila, Washington 98188 433 -1853 , . Office of Community Development The declaration of non - significance relating to the environmental question- aire'has been completed with five conditions. A copy is enclosed for your information. The five items will need to be resolved prior to the issuance of a building permit. For further information you may call me at Description of proposal Proponent Location of Proposal Lead Agency This proposal has been determined to (111110/not have) a significant adverse im- pact upon the environment. An EIS (108/is not) required under. RCW 43.21C.030(2) (c). This decision was made after review by the lead agency of a completed environmental checklist and other information on file with the lead agency. • Responsible Official Position/Title C (" CITY OF TUKWILA OFFICE OF COMMUNITY DEVELOPMENT ItiMMIES/FINAL DECLARATION OF /i'JON- SIGNIFICANCE Date 4 May 1979 Tukwila Office Building for Ken Kinnear Owner: Ken Kinnear Agent: El Baylis Associates /Architects Southcenter Boulevard east of Tukwila City Hall City of Tukwila • Kjell Stoknes File No. EPIC -FD -98 Director, Office of Community Development Signature klAA.A. COt' ENTS : 1. Traffic and related data as may be required by the Public Works Department. No building permit'is to be,issued until access to the property is guaranteed as available through the Public Works Department. '2. No evergreen trees allowed on the north property line. Required is a solid screening by evergreen shrubs which will provide screening but not obstruct view from adjacent property to the north. A revised landscape plan for the north property line is required to be submitted and approved by the Responsible Official prior to issuance of building permit. 3. Sample of exterior building material to be submitted to City prior to issuance ' of building permit. .4. Type II catch basin is to be continually maintained by the owner so it will be able to function consistant with its design. 5. Detailed drawings showing garbage inclosure to be submitted to the Building .Official prior to issuance of building permit. CITY OF TUKWILA OFFICE OF COMMUNITY DEVELOPMENT /FINAL DECLARAT I OR OF /NON - SIGNIFICANCE Description of proposal Proponent Location of Proposal Lead Agency Tukwila Office Building for Ken Kinnear Owner: Ken Kinnear Agent: El Baylis Associates /Architects Southcenter Boulevard east of Tukwila City Hall City of Tukwila File No EPIC -FD -98 This proposal has been determined to (r /not have) a significant adverse im- pact upon the environment. An EIS (II/is not) required under RCW 43.21C.030(2) (c). This decision was made after review by the lead agency of a completed environmental checklist and other information on file with the lead agency. Responsible Official Kjell Stoknes Position /Title Director, Office of Community Develo ent Date _ 4 May 1979 Signature k /A COMMENTS: 1. Traffic and related data as may be required by the Public Works Department. No building permit is to be issued until access to the property is guaranteed as available through the Public Works Department. 2. No evergreen trees allowed on the north property line. Required is a solid screening by evergreen shrubs which will provide screening but not obstruct view from adjacent property to the north. A revised landscape plan for the north property line is required to be submitted and approved by the Responsible Official prior to issuance of building permit. 3. Sample of exterior building material to be submitted to City prior to issuance of building permit. 4. Type II catch basin is to be continually maintained by the owner so it will be able to function consistant with its design. 5. Detailed drawings showing garbage inclosure to be submitted to the Building .Official prior to issuance of building permit. e1 lisp associates . architects TO COPIES al.-it .,.t Mme. RECEIVED CITY *1r• } IKVt!I t LETTER OF TRANSMITTAL APR GATE 500 - 108th avenue northeast tip' R 8 )979 ' • ��'` �'' bellevue, wa. 98004 206 - 454 -0566n j� { A TTENTI� ' MO IDVII�N 0E /. 'y1Jy`�`M' + .� (, eiAtt 'f'uF. WAt. JOB NO. r — GENTLEMEN: WE ARE SENDING YOU VAttached Under separate cover via the following items. ❑ Shop drawings ❑ Prints ❑ Plans ❑ Specifications ❑ Samples ❑ Copy of letter ❑ Change order ❑ DATE w NO. i .`. -1III 111. IF .r s r. . • ■ DESCRIPTION THESE ARE TRANSMITTED as checked below: ❑ For approval ❑ Approved as submitted ❑ Resubmit copies for approval ❑ For your use ❑ Approved as noted ❑ Submit copies for distribution ❑ As requested ❑ Returned for corrections ❑ Return corrected prints ❑ For review and comment ❑ ❑ FOR BIDS DUE 19 ❑ PRINTS RETURNED AFTER LOAN TO US' REMARKS 06€-{soes1: #t., 1, Afa0 # vif xa ItirrA a. • COPY TO ,,.� SIGNED* / G. .�t�1d COPIES DATE NO. DESCRIPTION Rte. TjGli ...fri,,z.........: _.:we J .. , .r 9.. 19,. )01 de41F144 Ofr- Hitt 141-0, ?d x p2.. (.P oie 't 2. ''l, Q , . el baylis ; .associates ' architects 500. 108th avenue northeast bellevue, wa. 98004 206- 454 -0566 TO 4- GENTLEMEN: WE ARE SENDING YOU ❑ Attached Under separate cover via ❑ Shop drawings ❑ Prints ❑ Plans ❑ Copy of letter ❑ Change order ❑ THESE ARE TRANSMITTED as checked below: ❑ For approval ❑ Approved as submitted ❑ Resubmit ❑ For your use ❑ Approved as noted ❑ Submit ❑ As requested ❑ Returned for corrections ❑ Return ❑ For review and comment ❑ ❑ FOR BIDS DUE 19 ❑ PRINTS RETURNED AFTER LOAN TO US REMARKS COPY TO DATE LETTER OF TRANSMITTAL ATTENTION ' RE! (poce ❑ Specifications 7 )4 Ikv, - ,1, ,-, roi , 4615'. , SIGNED* JOB NO. the following items. ❑ Samples copies for approval copies for distribution corrected prints - .Tti.. TO e � Mr. Brian Brand El Baylis Associates 500 - 108th Avenue N.E. Bellevue, WA 98004 SUBJECT: TUKWILA OFFICE BUILDING Dear Mr. Brand: RECEIVED cry OF 't'U1 V,1!A Transportation Engineering & Planning Consultants 4•,; al : April 6, 1979 EL'ILDENG DEPT. Twenty-three 148th Avenue Southeast • BeHevue, Washington 98007 • (206) 641.3881 TRArsJS � RECEV1LEDti" el 1 avlis associates APR' e 1979 In response to your request of March 29, 1979, The TRANSPO Group has prepared the following report summarizing an analysis of several spe- cific traffic related issues as they pertain to the subject project. This report is intended to provide information which will assist you aid your engineer with the design of the building site by suggesting design elements that will help mitigate any existing or potential future adverse traffic related impacts. Specifically, issues addressed in our analysis include safe stopping sight distance, the design of the driveway to the parking lot, and the safety of turning movements in and out of the driveway to and from Southcenter Boulevard. The process followed to prepare this analysis was to assemble infor- mation on the existing traffic and transportation conditions in the project vicinity, forecast traffic volumes generated by the subject project, analyze these traffic forecasts to identify any adverse impacts, and recommend any mitigating measures that might eliminate or reduce the severity of the impacts. Proposed Project This project is proposed to be a two -story office building with a third basement level for parking that comprises 35,000 gross square feet and 115 parking spaces. The building site is located immediately east of the Tukwila City Hall on a rectangular parcel which climbs to the north from Southcenter Boulevard. Access to the property is proposed to be off Southcenter Boulevard via a single- access driveway which, to com- pensate for the steep grade, makes a sweeping "S" turn up the front slope of the property. The driveway is 25 feet wide, is designed to carry one lane of traffic in each direction and sometimes reaches ' a grade of about 15 percent. A sketch of this site, including this access driveway, is shown on Attachment 1. i9" " Mr. Brian Brand Page Two { 'as TRANSPO Existing Conditions Next to the site, Southcenter Boulevard is a 24 foot wide, two -lane major arterial connecting Interurban Avenue to the east with I -5 and South - center Parkway to the west. This road functions as a collector - distributor roadway where north -south streets act as tributaries to the residences up on the hill north of the site, To the west, the nearest intersection is 62nd Avenue S. which serves City Hall and some existing apartments on the top of the hill (and soon will serve about 330 units of condominiums and apartments as well as two office buildings). A private road just east of the subject site intersects Southcenter Boulevard on an angle and will serve the Xerox Headquarters Building and the existing office building slightly further to the east. Further east, 65th Avenue S. is the major arterial serving the residential area on the Hill. Presently Southcenter Boulevard widens at its intersection with 62nd Avenue S. to include a center, left turn, storage lane. The capital improvement program for the City of Tukwila shows Southcenter Boulevard is planned to be reconstructed to a four -lane roadway. There are no current plans to install a traffic signal on Southcenter Boulevard at 62nd Avenue S. or at 65th Avenue S. Both the existing and planned edge of roadway are shown on Attachment 2. A field inspection of the site shows vegetation has overgrown along the north side of the road and blocks a person's line of sight as they look east on Southcenter Boulevard from the location where the proposed driveway to the office building is to be located. It appears the maximum sight distance at this location is about 170 feet. This is compared with the desired safe stopping distance of 250 feet associated with the 35 mile per hour posted speed for Southcenter Boulevard. Traffic control on streets in the area provided by STOP signs which control the side street volumes permitting the higher volume main street traffic to pass without interruption and therefore minimize the total delay experienced at the intersection. Based on traffic counts made by the City of Tukwila, and supplemented by information assembled by The TRANSPO Group, the daily and peak hour volumes on Southcenter Boulevard and other streets in the area are depicted on Attachment 2. These volumes include the traffic anticipated to be generated by the aforementioned developments (i.e., condominiums and office buildings). This shows that Southcenter Boulevard carries about 5,300 vehicles per day with about even volumes passing in each direction. During the evening peak hour, Southcenter Boulevard serves about 260 vehicles per hour (vph) traveling eastbound and 250 vph westbound. ' Mr. Brian Brand Page Three This directional split during the evening peak hour is unusually well balanced considering the typical pattern where one direction of flow is substantially higher than the other - the heavier flow typically pre- dominated by work -to -home trips. Using techniques outlined in a Highway Capacity Manual, this road is shown to operate at a level of service B which is considered very good for urban conditions. When the road is widened to four lanes, it is estimated that the level of service will increase to level of service A which is the best possible level. Forecasted Traffic Volumes Statistics from the Institute of Transportation Engineers', Trip Generation Manual; Arizona Department of Transportations', Trip Generation Intensity Factors Manual, as well as independent accounts made by The TRANSPO Group, show that general multi- tenant office buildings similar to subject project generate about 14 vehicle trips per day per 1,000 gross leaseable square feet and about 2.5 vehicle trips per hour during the evening peak hour for every 1,000 gross leaseable square feet. When these trip generation rates are applied to the gross square footage contained in this office building, it is anticipated it will generate about 480 vehicles per day (240 round trips). During the evening peak hour about 80 trips will be generated with the majority traveling away from the site (70 vph outbound and 10 vph inbound). Normally the influence of the public transportation system is incorporated into these traffic volume estimates through a process known as a mode split. For this analysis, however, this step was not introduced which results in traffic volumes that might be slightly higher than normal. Based on previous studies in the area and existing traffic counts at nearby intersections, it is estimated that the major of the travel to and from this site will be oriented to the west since this provides optimal access to both I -5 and I -405 which provides best direct access to destinations outside the immediate service area. Considering that the average work trip in the region is 9.3 miles, it is safe to assume that a large portion of the trips will be using limited access facilities like I -405, SR 920, and 1 -5. The resulting daily and evening peak hour .volumes are shown on Attachment 3. cM TRANS ' Mr. Brian Brand Page Four David D. Markley Principal Attachments rT?.PNSPO Traffic Analysis, Conclusions and Recommendations The traffic analysis for this site revolves around the ability to make left turns in and out of the access road. The analysis found there were more than three times as many gaps as are needed by the traffic turning on or off Southcenter Boulevard. The ease of turning onto or off of Southcenter Boulevard will be made even easier when it is widened to four lanes. As noted earlier, there is insufficient sight distance to the east from the point where the proposed driveway intersects with Southcenter Boulevard. Accordingly, the existing landscaping will have to be cut back severely so a minimum of 250 feet safe stopping sight dis- tance is provided. Since the site is being regraded for better align- ment of the access road it seems appropriate that the area south of the road be cut back and low lying landscaping be planted (i.e., ground - cover so this minimum sight distance can be provided). As a added safety measure it might be desirable to redesign the driveway slightly to include a flat platform at the foot of the road so drivers can have aomore clear view of traffic, especially as they look to the west. A STOP sign and STOP bar should be installed at the foot of the access driveway to control traffic entering onto Southcenter Boulevard. The 15 percent grade on the driveway is the maximum permitted by the City and since it runs for a very short distance it does not appear to present a significant safety hazard. To enhance the safety on this access drive, especially at the turns, it is probably best to paint a centerline and reinforce the marking by placing 4 inch diameter traffic buttons to provide a tactile as well as visual reference for drivers. I trust this analysis responds to your needs and the above mentioned recommendations will assist you in the design of the access to the site. If you or the City have any questions after your review of this report, please feel free to call me. Sincerely, The TRANSPO Group TUKW ILA — OFFICE BLDG ar J 15X PROPOSED ROAD EDGE �_� ► / S ,CE NTE R EXI STING ROAD EDGE PROPOSED XEROX HEADQUARTERS l 65TH A E LEGEND: XXX - 24 HOUR DAILY TRAFFIC (YYY) - PM PEAK HOUR TRAFFIC NEG - NEGLIGIBLE 490 (3:) ) 490 (60) 920 (140) 920 (60) 70 70 (10)(20) XEROX BLDG. 210 (20) TUKWILA OFFICE BLDG. 590 (50) 580 ..... j (60) 975 (140) 985 (90) 210 (100) NEG 2650 (260) 2650 (250) 1520 (100) 1520 (100) c 2440 > ...! (240) / C .... LI: U 2440 E (240) 2650 (260) 2650 (250) • Attachment 2 1980 DAILY AND PEAK HOUR TRAFFIC VOLUMES WITHOUT THE TruNNspo PROJECT LEGEND: XXX - 24 HOUR DAILY TRAFFIC (YYY) - PM PEAK HOLR.TRAFFIC NEG - 'NEGLIGIBLE . 65TH AVE c 490 (30) 490 (60) 920 (140) 920 (60) 70 (10) 70 (20) 210 210 RR (20) 210 (100) 35 35(10) 1 ` 2650 (260) 590 (50) 41/4, 580 (60)� 2860 (270) 975 (140) 985 (90) 2860 (310) 1555 (120) 1555 (110) 2475 > (250)E C 2475 (245) r 210 2650 (60) (260) Attachment 3 ` 1980 DAILY AND PM PEAK HOUR TRAFFIC VOLUMES WITH THE PROJECT TRANSPO ti I Z .. J 3 t t- i . fool J INCREASE LANDING AT THE FOOT OF THE MILL STOP BAR ♦ ~ S 111111 H I TUKWILA OFF ICE_ BLDG - -• • T • ♦ STOP SIGN E PROPOSED ROAD EDGE PROPOSED XEROX HEADQUARTERS CENTERLINE WI TH 4" BUTTONS TRIM EXISTING LANDSCAPING OR PLANT NEW LANDSCAPING SO IT PROVIDES A MINIMUM OF 250' SIGHT DISTANCE � r EXISTING ROAD EDGE RECEIVED CITY OF TUKWILA Transportation Engineering & Planning Consultants 1 113 BUILDING DEPT. April 6, 1979 Mr. Brian Brand El Baylis Associates 500 - 108th Avenue N.E. Bellevue, WA 98004 SUBJECT: TUKWILA OFFICE BUILDING Dear Mr. Brand: Twenty -three 148th Avenue Southeast • BeNevue, Washington 98007 • (206) 641-3881 T3tANSP0 AEC el havlis associates ASR' • 1978 In response to your request of March 29, 1979, The TRANSPO Group has prepared the following report summarizing an analysis of several spe- cific traffic related issues as they pertain to the subject project. This report is intended to provide information which will assist you and your engineer with the design of the building site by suggesting design elements that will help mitigate any existing or potential future adverse traffic related impacts. Specifically, issues addressed in our analysis include safe stopping sight distance, the design of the driveway to the parking lot, and the safety of turning movements in and out of the driveway to and from Southcenter Boulevard. The process followed to prepare this analysis was to assemble infor- mation on the existing traffic and transportation conditions in the project vicinity, forecast traffic volumes generated by the subject project, analyze these traffic forecasts to identify any adverse impacts, and recommend any mitigating measures that might eliminate or reduce the severity of the impacts. Proposed Project This project is proposed to be a two -story office building with a third basement level for parking that comprises 35,000 gross square feet and 115 parking spaces. The building site is located immediately east of the Tukwila City Hall on a rectangular parcel which climbs to the north from Southcenter Boulevard. Access to the property is proposed to be off Southcenter Boulevard via a single- access driveway which, to com- pensate for the steep grade, makes a sweeping "S" turn up the front slope of the property. The driveway is 25 feet wide, is designed to carry one lane of traffic in each direction and sometimes reaches a grade of about 15 percent. A sketch of this site, including this access driveway, is shown on Attachment 1. Mr. Brian Brand Page Two TRANSPO Existing Conditions Next to the site, Southcenter Boulevard is a 24 foot wide, two -lane major arterial connecting Interurban Avenue to the east with I -5 and South - center Parkway to the west. This road functions as a collector- distributor roadway where north -south streets act as tributaries to the residences up on the hill north of the site. To the west, the nearest intersection is 62nd Avenue S. which serves City Hall and some existing apartments on the top of the hill (and soon will serve about 330 units of condominiums and apartments as well as two office buildings). A private road just east of the subject site intersects Southcenter Boulevard on an angle and will serve the Xerox Headquarters Building and the existing office building slightly further to the east. Further east, 65th Avenue S. is the major arterial serving the residential area on the Hill. Presently Southcenter Boulevard widens at its intersection with 62nd Avenue S. to include a center, left turn, storage lane. The capital improvement program for the City of Tukwila shows Southcenter Boulevard is planned to be reconstructed to a four -lane roadway. There are no current plans to install a traffic signal on Southcenter Boulevard at 62nd Avenue S. or at 65th Avenue S. Both the existing and planned edge of roadway are shown on Attachment 2. A field inspection of the site shows vegetation has overgrown along the north side of the road and blocks a person's line of sight as they look east on Southcenter Boulevard from the location where the proposed driveway to the office building is to be located. It appears the maximum sight distance at this location is about 170 feet. This is compared with the desired safe stopping distance of 250 feet associated with the 35 mile per hour posted speed for Southcenter Boulevard. Traffic control on streets in the area provided by STOP signs which control the side street volumes permitting the higher volume main street traffic to pass without interruption and therefore minimize the total delay experienced at the intersection. Based on traffic counts made by the City of Tukwila, and supplemented by information assembled by The TRANSPO Group, the daily and peak hour volumes on Southcenter Boulevard and other streets in the area are depicted on Attachment 2. These volumes include the traffic anticipated to be generated by the aforementioned developments (i.e., condominiums and office buildings). This shows that Southcenter Boulevard carries about 5,300 vehicles per day with about even volumes passing in each direction. During the evening peak hour, Southcenter Boulevard serves about 260 vehicles per hour (vph) traveling eastbound and 250 vph westbound. a I. Mr. Brian Brand Page Three TRANSPO This directional split during the evening peak hour is unusually well balanced considering the typical pattern where one direction of flow is substantially higher than the other - the heavier flow typically pre- dominated by work -to -home trips. Using techniques outlined in a Highway Capacity Manual, this road is shown to operate at a level of service B which is considered very good for urban conditions. When the road is widened to four lanes, it is estimated that the level of service will increase to level of service A which is the best possible level. Forecasted Traffic Volumes Statistics from the Institute of Transportation Engineers', Trip Generation Manual; Arizona Department of Transportations', Trip Generation Intensity Factors Manual, as well as independent accounts made by The TRANSPO Group, show that general multi- tenant office buildings similar to subject project generate about 14 vehicle trips per day per 1,000 gross leaseable square feet and about 2.5 vehicle trips per hour during the evening peak hour for every 1,000 gross leaseable square feet. When these trip generation rates are applied to the gross square footage contained in this office building, it is anticipated it will generate about 480 vehicles per day (240 round trips). During the evening peak hour about 80 trips will be generated with the majority traveling away from the site (70 vph outbound and 10 vph inbound). Normally the influence of the public transportation system is incorporated into these traffic volume estimates through a process known as a mode split. For this analysis, however, this step was not introduced which results in traffic volumes that might be slightly higher than normal. Based on previous studies in the area and existing traffic counts at nearby intersections, it is estimated that the major of the travel to and from this site will be oriented to the west since this provides optimal access to both I -5 and I -405 which provides best direct access to destinations outside the immediate service area. Considering that the average work trip in the region is 9.3 miles, it is safe to assume that a large portion of the trips will be using limited access facilities like I -405, SR 920, and I -5. The resulting daily and evening peak hour volumes are shown on Attachment 3. Attachments Mr. Brian Brand Page Four Sincerely, The TRANSPO Group David D. Markley Principal TRANSPO Traffic Analysis, Conclusions and Recommendations The traffic analysis for this site revolves around the ability to make left turns in and out of the access road. The analysis found there were more than three times as many gaps as are needed by the traffic turning on or off Southcenter Boulevard. The ease of turning onto or off of Southcenter Boulevard will be made even easier when it is widened to four lanes. As noted earlier, there is insufficient sight distance to the east from the point where the proposed driveway intersects with Southcenter Boulevard. Accordingly, the existing landscaping will have to be cut back severely so a minimum of 250 feet safe stopping sight dis- tance is provided. Since the site is being regraded for better align- ment of the access road it seems appropriate that the area south of the road be cut back and low lying landscaping be planted (i.e., ground - cover so this minimum sight distance can be provided). As a added safety measure it might be desirable to redesign the driveway slightly to include a flat platform at the foot of the road so drivers can have atimore clear view of traffic, especially as they look to the west. A STOP sign and STOP bar should be installed at the foot of the access driveway to control traffic entering onto Southcenter Boulevard. The 15 percent grade on the driveway is the maximum permitted by the City and since it runs for a very short distance it does not appear to present a significant safety hazard. To enhance the safety on this access drive, especially at the turns, it is probably best to paint a centerline and reinforce the marking by placing 4 inch diameter traffic buttons to provide a tactile as well as visual reference for drivers. I trust this analysis responds to your needs and the above mentioned recommendations will assist you in the design of the access to the site. If you or the City have any questions after your review of this report, please feel free to call me. TUKWILA Attachment 1 T1�e OFFICE BUILDING SITE PLAN 'RAN5PO Gro • LEGEND: 65TH AVE XXX - 24 HOUR DAILY TRAFFIC (YYY) - PM PEAK HOUR TRAFFIC NEG - NEGLIGIBLE 62 ND AVF. 975 ( 14 0) 490 (30) 490 (60) ��/// 920 (140) 920 (60) 70 70 (10) (20) XEROX BLDG. 210 (20) TUKWILA OFFICE BLDG. NEG9 590 (50) 580 (60) .w. 210 ( 1 00 ) NEG 2650 (260) 985 2650 (90) (250) 1520 1520 (100) c 2440 J (240)M c w w V I D 2440 E (240) 2650 (260) 2650 (250) Attachment 2 1980 DAILY AND PEAK HOUR TRAFFIC VOLUMES WITHOUT THE PROJECT A • .590 (50) 580 (60)� (270 (270) 75 2860 (310) LEGENDS 65TH AVE S . XXX - 24 HOUR DAILY TRAFFIC (YYY) - PM PEAK HOUR TRAFFIC NEG - NEGLIGIBLE 62 ND a �E 9 ( 140) 985 (90) 490 (30) 490 r (60) �� //// 920 (140) (60) 70 70 (10) (20) 210 (20) \ 210 (100) 35 3 5(10) 5) 210 (10) 210 (60) 1555 (120) 1555 (110) 2475 (250) L IT U- L) 2475 c (245) 2650 (260) 2650 (260) Attachment 3 1980 DAILY AND PM PEAK HOUR TRAFFIC VOLUMES WITH THE PROJECT J INCREASE LANDING AT THE FOOT OF, THE HILL STOP SIGN & STOP BAR TUKWILA OFFICE FRLDG - Timm PROPOSED XEROX HEADQUARTERS CENTERLINE WITH 4" BUTTONS TRIM EXISTING OR PLANT NEW L SO IT PROVIDES OF 250' SIGHT LANDSCAPING ANDSCAPING A MINIMUM DISTANCE f