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HomeMy WebLinkAboutSEPA EPIC-SA-12 - CITY OF TUKWILA - DESIMONE REZONE (CITY HALL)DESIMONE REZONE TO P -F (CITY HALL) EPIC -SA -12 Councilman Traynor said if he had his way it is a nonnegotiable item. 12 - 13--76 . ThF` ' i ty is buying them one retire ` fund and now they want the Ci -.o buy another one, then you epetire and go back on Social Security and get a third retirement pension. Councilman Harris said she would like to have it noted that she was not in agreement with t1 positions that have been stated at the Council Table. Councilman Saul said he agreed with Councilman Traynor, the Fire Fighters were told when they withdrew from Social Security that the City would keep the amount they had previously put in for the Fire Fighters Social Security, there has been no change, and they were aware of the Council's stand on this when they voted. Council President Hill saic he got the feeling they wanted the part the City had contributed to Social Security paid directly to the Fire Fighters. Mayor Bauch said Deputy City Attorney Hard's opinion is being taken out of Conte) by the Fire Department. Council President Hill asked for a vote on how many of the Councilmen would like to back the opinion that they made two or three months ago prior to the Fire Fighters vote that they withdraw from Social Security. TRAYNOR, HILL, SAUL, VAN DUSEN VOTED YES. MS. HARRIS VOTED NO. Council President Hill stated it appeared the Council had not changed their mind. MOVED BY HILL, SECONDED BY TRAYNOR, THAT THE COMMITTEE OF THE WHOLE. MEETING RECESS FOR TEN MINUTES. CARRIED. The meeting was called to order by Council President Hill with all Council Members present as previously listed. or posed City Hall The City Hall architects presented possible alternatives that had - Architect's been'. requested since their last presentation to the City Council. presentation The architect pointed out the changes they had made providing for a secondary meeting space that . would be possible by screening off the vestibule which would make a meeting room that would seat approximate 25 or more people. He said they recommended using the court room as Council chambers. It will seat approximately 100 people. Each Councilman will have space to have a file next to his chair. This could also serve as a conference room when it is not being . used by tl City Council. Councilman Harris said it would be helpful if there could be a podium that a person could use when addressing the meetini also microphones for the speaker and each City Councilman. Councilm, Van Dusen expressed the thought that some people would not like to come up to the front and speak into a microphone. The architect sat that provision could be made. Mayor Bauch noted there was no place for the press. Councilman Harris asked if a handicapped person could get into the City Hall offices, rest rooms, etc. The architec said the handicapped could get into the upper floor of the lower floor, but there was no way for the handicapped to get from the upper floor to lower floor inside the building without installing an elevator. The architect explained the lower level floor plan which would house the Police Department. He said there was a great deal of flexibilit, for the placement of offices and files. He said there would be a good ventilation system with six changes of air every hour. Council President Hill said the City Council would get back with the archite in the near future. Budget Proposal Councilman Traynor said he would like to propose a secretarial pool - 1977 be put in the budget. He said the clerks, secretaries, typists, and stenographers could be put in there and be non - departmental. Steve Hall, Director of Public Works, asked if he was talking about Administrative Secretaries. Councilman Traynor said not necessarily but he would like Administration to set up a secretarial pool. Councilman Harris said a pool is usually comprised of clerk - typists, ,..^r^ +nrioc aro'nf +on rnfatnri ahniit nnrp A VPAr RECESS 8:55 P.M. -9:05 P.M. L1 T ur IUi'W1LM- UUivflI1I Itt ur Itit WhULt NttI1NU November 29, 1976 „EN..? 2 Amendment to.TMC 18.40 and 18.64: to make the process of rendering require a .conditional use permit 'Larimer Annexation - Bonded Indebted- . • -ness and Comprehen- sive Plan • Kejll Stoknes, Director of Community Development, stated the City Council had directed several months ago that the Planning Commission undertake a code amendment to the Tukwila Zoning Ordinance.that wo1od make rendering a conditional use. Mr. Stoknes said he rec- ommended the matter be referred to the Deputy. City Attorney for his recommendation and then scheduled for a public hearing. MOVED BY TRAYNOR, SECONDED BY SAUL, THAT THIS MATTER BE REFERRED TO THE CITY ATTORNEY FOR HIS RECOMMENDATIONS. * Councilman Harris said she noticed there was a representative from Seattle Rendering present and she thought they should hear from him. John Phillips, attorney for Seattle Rendering Plant, said he was prepared to discuss what Seattle Rendering is planning to do in the near future to change their processing procedures. Council President Hill said the Council had the presentation some months ago. * CARRIED. Kjell Stoknes, Director of Community Development, stated the Staff recommends that the City Council establish.a meeting date with the Larimers at which time they could decide the questions of adoption of the comprehensive plan and bonded indebtedness. MOVED BY TRAYNOR, SECONDED BY SAUL, THAT THIS ITEM BE ON THE AGENDA OF THE DECEMBER 20, 1976 AGENDA OF THE CITY COUNCIL MEETING. CARRIED. RECESS MOVED BY SAUL, SECONDED BY TRAYNOR, THAT THE COMMITTEE OF THE WHOLE 8:55 P.M. - 9:05 P.M. MEETING RECESS FOR TEN MINUTES. CARRIED. The . meeting was called to order by Council President Hill with all Council Members present as previously listed. 1977 Budget Proposal Council President Hill said as they had been discussing the budget - City Attorney they let each Department justify their budget proposal. . Deputy City Attorney Hard said they were asking there be a difference between the retainer work and the court work. He said the reason they were asking that it be done this way is because they have expende more time than they had.anticipated. He said so far this year they had 231 hours in municipal court whereas there had been 281.5 last year. There has been an increase in the cases they are trying and this has improved the morale of the Police Department. He said they would like to have the court time handled on an hourly basis; they hope to minimize the time they have to be in court for the year 1977. He said they had set the retainer fee at $1,275 a month and it would cover the following types of work: - Attendance at City Council Meeting; Preparation of ordinances, contrac leases, and other documents; Preparation of legal opinions.„ Inquiries from the City by telephone - sometimes information is requested that requires research and a written opinion; a-1= 1,sr-om- qpeople -, ather-th-an- -C-i- ty- emp-l- oyees -,-who want_i.nf_ormat -ion -from- the -haw. form --a-s they- a- re-the -Ci-ty-- Attorney -; Represent the City at meetings; Review contracts and offer suggestions. Deputy City Attorney Hard said sometimes it is hard to determine what is retainer work and what is other work. He said he thought it would be a good idea to tell people when they call in for::information whether it is retainer work or other. Councilman Pesicka said she felt the City Attorney should attend the Committee of the Whole Meetings as frequently they need legal opinions at that meeting. Attorney Fleming said if they attende the Committee of the Whole Meetings they would have to add $100 to the retainer fee. Mayor Bauch said he had been working with the City Attorney on a procedure to follow for next year so everyone would know what work is covered under the retainer fee and what is not. The roll call vote on approval of the City Attorney budget as presented was unanimous. RECESS. 10:05 P • MOVED BY SAUL, SECONDED BY VAN DUSEN, THAT THE COMMITTEE OF THE .M. -10:10 P.M. WHOLE MEETING RECESS FOR FIVE MINUTES. CARRIED. The meeting was called to order by Council President Hill with all Council Members present as previously listed. Cit ..all Design The Mithun architects presented a film and scale model of the proposed city hall. They explained the;merits of the planned parking space and the open wall concept that would allow rearranoemert of office ;F CITY OF TV AILA COMMITTEE F THE WHOLE MEETING N'avmber 2g, 1976 Page 3 DISCUSSIO, - Contd. City Hall Design - Ccritd. • there was a need. The Council Members asked a number of questions about various space allocations for departments. Councilman Harris said she thought there should be provision for a second medium sized conference room so two meetings could be scheduled at the same time. The architects said they would work on that request. Call for Bids Council President Hill said there was a call for bids on four telemetering systems and 6 -inch double check valve assemblies. MOVED BY VAN DUSEN, SECONDED BY MS. PESICKA, THAT THERE BE A CALL FOR BIDS ON THE TELEMETERING SYSTEMS AND DOUBLE CHECK VALVE ASSEMBLIES. CARRIED. ADJOURNMENT MOVED BY TRAYNOR, SECONDED BY SAUL, THAT THE COMMITTEE OF THE ' 11:45 P.M. WHOLE MEETING ADJOURN. CARRIED. Gem Norma Booher, Recording Secretary PROPOSED REZONE OF DESIMONE PROPERTY TO P• F C TO ALLOW CITY HALL HUMAP ENVIRONMENTAL IMPACT STATEMENT CITY OF TUKWILA OFFICE OF COMMUNITY DEVELOPMENT SEPTEMBER 1978 EPIC - SA -12 PROPOSED REZONE OF DESIMONE PROPERTY TO P -F PTO ALLOW CITY HALL CONSTRUCTION) NATURE OF THIS REPORT: Final Environmental Impact Statement TYPE OF REQUEST: Change of Zoning (R.1 -12.0 to P -F) SPONSOR: City of Tukwila LEAD AGENCY: City of Tukwila NOTE: This Environmental Impact Statement has been prepared for the change in zoning of the Desimone site from R.1 to P -F in order to allow city hall to be built on the property. Because of the interrelatedness of these two proposals (the rezone and city hall construction), the environmental impacts of both actions are collectively discussed in this EIS. INTRODUCTION A. ACTION /ACTION SPONSOR This final environmental impact statement has been prepared for the change in zoning of a 5 -acre parcel of land located at the southwest intersection of 65th Avenue South and South 151st Street, commonly known as the Desimone property, from R.1 -12.0 (Single - family Residential) to P -F (Public Facility). The P -F zoning classification would allow the governmental headquarters of the City of Tukwila to be constructed on the site. The sponsor of the zoning change action is the City of Tukwila. B. LEAD AGENCY The lead agency for this action is the City of Tukwila. The Office of Community Development is responsible for the preparation of the EIS and compliance with SEPA regulations. The Responsible Official is Kjell Stoknes, Director of the Office of Community Development. Contact Person: Fred N. Satterstrom, Associate Planner Office of Community Development 6230 Southcenter Boulevard. Tukwila, Washington 98188 (206) 242 -2177 C. PRINCIPAL CONTRIBUTORS TO FINAL EIS Tom Emrich Architect, Mithun Associates Steve Hall — City of Tukwila, Public Works Director; circulation information Dick Williams — City of Tukwila, Engineer; utility information, traffic counts John Sheets — City of Tukwila, Police Department; impacts on police protection Hubert Crawley — City of Tukwila, Fire Department; fire safety information Carl Stixrood — City of Tukwila, Landscape Architect; biological /botanical input D. OTHER LICENSES /PERMITS REQUIRED Prior to city hall construction, a grading and fill permit, and building permit are required. E. LOCATION OF EIS BACKGROUND DATA Much of the background information to this final EIS can be found in the docu- ment "Data Inventory: Tukwila Planning Area — 1975." This document, along with other pertinent maps, records, and information can be reviewed at the Office of Community Development, 6230 Southcenter Boulevard in Tukwila. F. COST TO PUBLIC OF FINAL EIS $0.75 G. DATE OF ISSUE OF FINAL EIS September 15, 1976 ii TABLE OF CONTENTS Page INTRODUCTION i. DISTRIBUTION LIST 1 SUMMARY 2 I. DESCRIPTION OF THE ACTION 4 II. EXISTING ENVIRONMENTAL CONDITIONS 7 III. ENVIRONMENTAL IMPACT OF THE PROPOSAL 11 IV. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED 14 V. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS 15 VI. ALTERNATIVES TO THE PROPOSAL 15 VII. RELATIONSHIP BETWEEN LOCAL SHORT -TERM USES OF MAN'S 19. ENVIRONMENT AND MAINTENANCE AND ENHANCEMENT OF LONG- TERM PRODUCTIVITY VIII. IRREVERSIBLE AND IRRETRIEVABLE COMMITMENTS OF 20 RESOURCES ATTACHMENTS A 21 B 24 C 25 D 26 E 32 COMMENTS TO DRAFT EIS • 36 DISTRIBUTION LIST OFFICE OF THE GOVERNOR Legislative Building Olympia, Washington 98504 DENNIS LUNDBLAD, HEAD ENVIRONMENTAL REVIEW Department of Ecology Olympia, Washington 98504 BRIAN BEAM, ENVIRONMENTAL PLANNING DIVISION Puget Sound Council of Governments Grand Central on the Park Seattle, Washington 98104 JAMES P. HARRIS, PLANNING DIRECTOR Kent Planning Agency P.O. Box 310, City Hall Kent, Washington 98031 GORDON ERICKSEN, PLANNING DIRECTOR Renton Planning Department 200 Mill Avenue South Renton, Washington 98055 OMER MITHUN Mithun Associates - Architects 2000 - 112th Avenue NE Bellevue, Washington 98004 1 SUMMARY A. THE PROPOSAL This final Environmental Impact Statement has been prepared for a change of land use classification from Single - family Residential (R.1 -12.0) to Public Facility (P -F) on a 4.8 -acre site located at the intersection of 65th Avenue South and South 151st Street and commonly referred to as the Desimone property. The Sponsor of the proposal is the City of Tukwila. The reclassification of land use from R.1 to P -F will allow the construction of a city hall on the site. The objective of the land use reclassification is to obtain zoning for the property which properly permits the construction of governmental offices. The City of Tukwila has informally studied the site for its suitability for this purpose and has shown a definite public interest in constructing the city's governmental headquarters on the property. B. DIRECT AND INDIRECT IMPACTS 1. Impacts to Physical Environment. No direct physical impacts are anticipated as a result of the proposed zone change from R.1 to P -F. As a result of the construction of.a city hall, several physical impacts are anticipated. City hall construction will necessitate the alteration of topo- graphy on a portion of the site; the magnitude of which is dependent on the size of the facility. Some excavation and some filling will be necessary. Existing tree cover will be reduced in proportion to facility size. A reduc- tion in wildlife habitat will accompany the partial removal of vegetation. The rate of storm water runoff is expected to increase while runoff water quality is expected to decrease. Noise and air pollution will increase insignificantly as a result of city hall construction. 2. Impacts t� Human Environment. The change in zoning of the subject site from R.l to P -F is expected to have little, if any, direct impacts on the human environment. Several impacts are anticipated as a result of the indirect action of locating city hall on the site. Resident population on the site will be displaced by 50 - 75 employees who will work in city hall. Traffic volumes are expected to increase on 65th Avenue South and South 151st Street, reducing safety on the streets and increasing noise. The area may experience a proclivity toward other similar office and /or commercial uses, which would change the existing character of the area. C. ALTERNATIVES Three alternatives are considered in detail in the final EIS. 2 The first alternative is "No Action," which entrails maintaining the existing, . scattered city offices. Under this alternative, the maintenance and upkeep costs are expected to be high since the existing structures must be brought up to standards in order to lengthen their lifespan. Employee "overcrowding" is expected under this alternative as the city grows and its services expand. Overcrowding will cause a need for piece -meal expansion of existing structures . creating, in turn, another cost of maintaining these structures. This alterna- tive maintains the present inconvenience which the public encounters in finding the "right" city hall, and also adds to the duplication of facilities and equipment. Alternative two consists of building the city's head offices on what is commonly referred to as the Annex site at 6230 Southcenter Boulevard. This site is already owned by the City of Tukwila and would not require rezoning to allow for city hall. Under this alternative, the benefits of consolidation which come about as a result of locating all city offices in the same building (or on the same site) are identi- cal to those of the proposed action. Alternative three entails purchasing land west of I -5 at 53rd Avenue and South - center Boulevard and erecting city hall. This location would be central to the City if it expanded westward but site costs and city hall construction costs would" be high. D. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED Site and building design and layout can at least keep adverse environmental impacts to a minimum. By conforming building design and parking layout to the topographical and botanical conditions of the site, disruptions to the topography, vegetation, and wildlife can be held to a minimum. E. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS The primary unavoidable impacts include the partial, inextricable loss of vege- tation and the reduction in wildlife habitat caused by buildings and parking space. In addition, traffic volumes on adjoining streets will swell during business hours, and trends in land use in the vicinity may change to office and /or commercial types. 3 I. DESCRIPTION OF THE ACTION A. THE PROPOSAL The City of Tukwila is proposing to rezone a 4.8 -acre wooded lot, commonly referred to as the Desimone property, from R.1 -12.0 to P -F. The property is located at the southwest corner of the intersection of South 151st Street and 65th Avenue South. The purpose of the rezone request is to allow a city hall to be constructed on the site. For several years, the City has studied various locations for a new city hall complex, and considerable interest has been shown in the subject site. As of the date of the final EIS, the Desimone property had not been purchased by the City of Tukwila. However, an appraisal has been completed which values the site at approximately $105,000. Trapezoidal in configuration, the subject site is situated in the southwest corner of the intersection of 65th Avenue South and South 151st Street (SEE, Map 1.) at the southern crest of the Tukwila Hill. One single - family home presently occupies a portion of the northwest corner of the lot and a small clearing is situated in the center, but the majority of the. 4.8 -acre parcel is wooded. Figure 1. depicts a conceptualized building and parking layout for the Desimone property as drawn by the architects for the project, Mithun Associates of Bellevue, Washington. Total floor area of the city hall structure depicted in Figure 1. is 20,000 square feet. B. MAJOR ASPECTS OF THE PROPOSAL The City of Tukwila proposes to .rezone the Desimone property from R.I. to P -F and to construct a city hall on the site. Construction of city hall would entail clearing grading, and filling areas of the site for building and parking spaces. The antici- pated floor area dimension of city hall is approximately 20,000 square.feet. C. LAND USE PLANS AND ZONING REGULATIONS According to the existing Tukwila Comprehensive Plan drafted in 1962 by John . Graham Company and revised in 1967, the Desimone property is located in an area designated "Multiple Family Residential ". It should be noted that the northern boundary of the subject site (or South 151st Street) marks the division between multiple and single - family residential areas on the Land Use Map. Although not yet officially adopted, the new Comprehensive Plan Land Use Map (as proposed by citizen review committees) designates the subject site for "medium - density" residential use. Medium- density is defined as between 6 - 17 units per gross acre and is characterized by duplexes, triplexes, and fourplexes. This class- ification is. subject to change as a result of public hearings on the Land Use Maps. 4 rISCV USi ,1 mat ST CTY OF 11IIWLA MAP 1. VICINITY. MAP OF PROPOSED REZONE (DESIMONE PROPERTY) L. SIT PSTAT Ilt AT No IA. OOIILEVARO 5 wIVI CITY LIMITS Site of proposed rezone to P -F and proposed city hall for Tukwila. I J FIGURE 1. CONCEPTUAL SITE PLAN FOR CITY HALL: DESIMONE SITE NOTE: The figure illustrated above is only an architect's sketch of what city hall might look like • from the air on the Desimone property; it is not a hard and fast layout plan. It is included here so that the reader can get a feel for the relationships which exist between building, • parking space, and site on the Desimone property. 1/4747// s Zo, ovt, cf Pi I A./ Presently the subject site is zoned R.1- 12.0, Single- family residential. Residential lots in this zone must have an area of 12,000 square feet or more. Adjacent properties to the south, west, and north are zoned for single - family residential use also. On the east, however, properties are zoned (and used) for multiple - family residential use. The requested zoning classification, P -F (Public Facility), would restrict use of the subject site to those uses specified in the Tukwila zoning ordinance, TMC 18.44.020. Generally these uses are schools, hospitals, educational institutions, libraries, governmental office buildings, parks, playgrounds, and public meeting halls and auditoriums. Other uses may be permitted in the P -F zone district only after issuance of a use permit authorized by two - thirds vote of the City Council, (SEE, TMC 18.44.030). Construction of a city hall qualifies as a "governmental office building" and is allowed outright in this zone. D. HISTORICAL BACKGROUND OF PROPOSED ACTION The need for a. modern, centralized city hall- structure has long been recognized by the City of Tukwila. In 1973 a study was done by the Planning Commission which analyzed and made recommendations on 10 sites for city hall. Their study was called "City Hall Complex Location Analysis ", and as a result of the study, three sites were recommended to the city council for the location of city. hall. These sites were, in order of preference, Site #10 (VanWoerden property), Site #6 (City Hall Annex property and Site #9 (City Light property). Site #6 was designated as second choice only with the provision that additional land be obtained to the east to augment the 2.4 -acre parcel. Since the initial study by the Planning Commission, considerable time has been spent by the City Council in discussion of a city hall site. Early in 1976, a City Hall. Construction Flow Chart was unofficially adopted by the Council. Selection of a site for city hall was designated as a first step on the Flow Chart. On 7 June 1976, the City Council undertook this step and passed a motion establishing the Desimone propert as the city hall site. The proposed action of rezoning the Desimone property from R.1 to P -F is necessary to allow the secondary action, that of building city hall. II. EXISTING ENVIRONMENTAL CONDITIONS A. PHYSICAL ENVIRONMENT' 1. Earth. (a) Geology and Soils: A very thin layer of soil overlies bedrock on most of the Desimone site. Bedrock geology is composed of sedimentary rocks laid down in pre - glacial times and basal- tic -type rocks which have intruded into these deposits. The thin soils above are comprised largely of till left behind by great glaciers which advanced over the region several times and then melted back again 14,000 to 100,000 years ago. 'Much of the information concerning the physical aspects of the environment on the Desi- mone site has been taken from the document entitled "Data Inventory: Tukwila Planning Area," 1975. 7 The primary, geologic . characteristic of bedrock is its stability. Bedrock provides excellent foundation stability for heavy structues (as city hall would be), stands well under seismic disturbance, and maintains good slope stability. However, sedimentary and basaltic -type rocks are difficult to excavate and tend to inhibit large -scale alterations of the natural land - form. (b) Topography: The subject site lies on the southern crest of the Tukwila Hill. Elevation on the site reaches to approximately 186 feet in the northeastern corner of the property. The lowest elevation is about 140 feet in the southwestern corner. A U- shaped ridge, with two north -south axes running along the east and west sides of the property and an east -west axis running along the north property line, is discernible on the site. The east and west sips of this ridge rise rapidly while the slope inside the "U" is more gradual.4 A nearly level piece of ground, approximately one to one - and -a -half acres in size, is located within this "U" on the eastern half of the site. A small ravine is located on the western edge of the property. A partial fill for a once - contemplated extension of 62nd Avenue South juts into the ravine about 150 to 200 feet. The fill extension is now densely overgrown and hardly discernible without walking the property. 2. Air. According to the Puget Sound Air Pollution Control Agency, air quality in the Tukwila area is marginal. Concentrations of suspended particulates are cur- rently increasing and particle fall out is also considered high. Air quality conditions reach their lowest levels during June - September, when precipita- tion and winds are lightest. 3. Water. Because of the bedrock which underlies the thin surface soils, percolation of water into subsurface strata is probably minimal except in places where the bedrock is severely broken up or fissured. Consequently, much of the precipitation which falls on the property is turned directly into surface runoff .. during the rainy season. Due to the slope of the property, drainage on the site is predominantly to the south. Surface runoff collects in two ill- defined ravines and flows overland into a small, marshy basin just south of the property forming a marsh or pond during much of the year. A poorly- drained marsh or swamp exists along the western edge of the property where the ridge plunges into a small ravine. 2As of the date of the pre -draft EIS, no survey had been completed for the Desimone property. Information concerning the "lay of the land" is the result of an on -site field investigation by staff and an analysis of Walker & Associates topographic maps. 8 4 Flora.3 The Desimone property is heavily forested with a second- growth canopy of coniferous and deciduous trees, the latter vastly outnumbering the former. One huge western red cedar, which stands in a low area along the property's western edge, may be the only "old growth" tree on the site. The predominant specie found on the property is the broadleaf maple. These maples are usually tall, mature, and widespreading. Other deciduous varieties include red alder and willow, and lesser numbers of black cottonwood, wild cherry, and pacific dogwood. Coniferous varieties are found mostly in the southwestern portion of the site and include scattered stands of tall Douglas Firs, western hemlock,, and western red cedar. Understory vegetation is dense and comprised largely of hazelnut, vine maple, . pacific 'elderberry, and indian plum. Wild blackberries, huckleberries, and oregon grape are scattered about the property, and various ferns mat the damp, poorly- drained areas. A clearing exists on the eastern half of the property in which wild and domestic grass species abound. 5. Fauna. The forested environment of the Desimone property provides forage and shelter for a variety of birds and mannals. Rabbit, skunk, weasel, squirrel, and possibly raccoon are expected to inhabit the site. Although no on -site bird observations /counts have been made, it is expected that robin, sparrow, starling, crow, blackbird, and bluejay are the most common species. 6. Noise. The ambient noise level (without vehicular traffic) on the Desimone site is approximately 60 - 65 dba.4 Vehicular traffic passing by momentarily measures between 70 - 90 dba, depending on vehicle type and location of noise measure- ment. Generally, noise originating from traffic moving uphill on 65th Avenue South is louder than traffic moving along South 151st Street which is level. 7. Natural Resources. The forest on the Desimone site represents a wood and pulp resource, although the importance of this site to the forest products industry is negligible. Also, the basaltic -type rocks found on the site represent a potential., quarry rock resource although the actual quality or grade of such rock has not been determined. 3Information concerning vegetation was gathered during an on -site investigation of the Desimone property, 16 July 1976. 4Noise measurements taken on Desimone site, 30 July 1976, by Staff member of Office of Community Development. B. HUMAN ENVIRONMENT 1 Population and Housing. There is one housing unit on the Desimone site which is occupied by one person. The housing unit is a single - family home, approximately 25 years old, and in good condition. 2. Transportation /Circulation. The Desimone site is located along an arterial road, improved with U.A.B. funds in 1971, which traverses the Tukwila Hill from Southcenter Boulevard to Interurban Avenue. Along the east side of the property this arterial is called 65th Avenue South, on the north side it is South 151st Street. The cross section of this arterial is the same throughout: two driving lanes, two parking lanes, sidewalks (both sides), curb and gutter. Current traffic volumes on 65th Avenue South and South 151st Street are light. The average daily traffic is approximately 1265 vehicles, with peaks of about 75 -85 vehicles per hour at 11 AM and 100 - 115 vehicles at 4 - 5 PM. The subject site is served by METRO- operated buses which run along. 65th Avenue South and South 151st Street. 3. Public Services.. Public services are provided to the subject site by the City of Tukwila. A recently built, well - equipped fire station, operated and staffed by the City, is located within four blocks of the site. The subject site is located within the South Central School District No. 406. 4. Utilities. Water and sanitary sewer services are available to the Desimone site and the lines are sized for future expansion in the area. An 8 -inch sanitary sewer stub is available to the property from 65th Avenue South.. A 10 -inch main water line with stubs to the Desimone property exists along both 65th Avenue South and South 151st Street. 5. Aesthetics. The quiet, sylvan setting of the Desimone site and the properties which adjoin it to the south and west contrasts with the more urbanized character of the surrounding area. The area in which the Desimone property is located represents one of the last, large undeveloped residential tracts of land on the Tukwila hill. 6. Recreation. No studies have been done to determine the public use of the Desimone property for recreational purposes, but it is anticipated that any such use is minimal. The ruggedness of the site and the fact that it is in private ownership tend to discourage public use. 5Traffic counts were taken on South 151st Street by the City of Tukwila Public Works Department over a 4 -day period, July 24 - 27, 1976. �n 7. Land Use. The Desimone property is generally located within the Tukwila Hill residen- tial area. The. Maple Crest and Canyon Estates Apartments are located across 65th Avenue to the east. Properties to the north, south, and west of.the subject site are currently undeveloped. Land use trends in the area are for multiple - family residential use, although development to such use has been slow in the past several years. III. ENVIRONMENTAL IMPACT OF THE PROPOSAL For the purposes of this section, two types of impacts will be discussed: direct and indirect impacts. Direct impacts are those effects which are expected as a result of the rezone action from R.1 to P -F. Indirect impacts include those effects which may be expected as a result of city hall construction on the Desimone property. A. ENVIRONMENTAL IMPACT ON THE NATURAL SYSTEMS 1. Earth. Direct impacts: No impacts to the geology or topography are anticipated as a result of the rezone. Indirect impacts: Future development of a city hall structure and parking lots will necessitate some excavation and filling, altering the existing topography. While the stability of the ground on the site is good for large structures, the underlying bedrock makes excavation difficult. As a result, site preparation costs may be increased. 2. Air. Direct impacts: No impacts to the atomosphere are expected as a result of the rezone action. Indirect impacts: Development of city hall will increase auto traffic in the general area. This additional traffic will cause increased vehicular pollutants in the air around the site. This impact is expected to be insig- nificant and will not, by itself, detectably decrease air quality in the Tukwila area. 3. Water. Direct impacts: No impacts to surface or subsurface waters are anticipated as a result of the rezone action. Indirect - impacts: Surface runoff will increase as a result of the construc- tion of city hall and associated parking space. This additional runoff, if not diverted from the present drainage pattern, will drain into a marshy area to the south of the property and could possibly cause problems downstream.6 6SEE, Attachment A for discussion of surface runoff problems. 11 4. Flora. Direct impacts: No impacts to vegetation are expected as a result of the rezone action. Indirect impacts: Construction of city hall and parking space will neces- sarily displace much of the existing tree and groundcover vegetation on the site. The exact amount of vegetation displaced will depend on building size (which will determine parking lot size) and site design. Most of the trees which will be eliminated are deciduous varieties, primarily maples. Because of their location along the property's edges, the few coniferous trees which exist will not be dramatically affected. 5. Fauna. Direct impacts: No impacts are anticipated as a result of the rezone action. Indirect impacts: Construction of a city hall on the Desimone property will significantly reduce the site's existing wildlife habitat. It is expected that these adverse impacts will be uniform on all types of birds currently using the site, but may completely eliminate use by certain mammals. 6. Noise. Direct impacts: No impacts are anticipated as a result of the rezone action. Indirect impacts: Construction of city hall will temporarily increase the ambient noise level in the subject area. Heavy equipment could periodically increase noise readings in excess of 90 dba, although the ambient noise level is expected to be considerably less. Upon completion, increased vehicular traffic is expected to raise the ambient noise level to approximately 65- 75 dba. Increased noise will cause some loss of quietness associated with living in the surrounding residential area. B. HUMAN ENVIRONMENT 1. Housing and Population. Direct impacts: Rezoning the subject site from R.1 to P -F will effectively eliminate future development of the site to residential use. This could mean that future population of the city may be reduced by 60 - 150 persons. Indirect impacts: The existing housing unit along with its occupant will be displaced as a result of construction of city hall on the site. This one resident will be supplanted by approximately 50 - 75 employees who will work at city hall during daytime hours. 2. Transportation /Circulation. Direct impacts: No impacts to transportation systems are expected as a result of the rezone action. 12 Indirect impacts: :Construction of city hall on the Desimone site will increase traffic volumes on all surrounding streets, particularly 65th Avenue South and South 151st Street. It is expected that traffic volumes could increase as much as 50 percent during business hours on these streets. Much of this increase could occur during peak traffic hours. However, the increase in vehicular traffic on 65th Avenue South and South 151st Street is expected to be well within the limits of these streets. The movement of additional vehicles could present safety problems during hours when children are going to and from the elementary school. A need for a marked pedestrian crossing may be created as more residents begin to walk to city hall. It is expected that this cros- sing would be across South 151st Street where the entrance to city hall would occur. 3. Public Services. Direct impacts: No impacts to public services or public service levels are expected as a result of the rezone action. Indirect impacts: Centralization of city departments in one complex is expected to have beneficial impacts on public services. Equipment- sharing among departments could reduce redundant expenditures, saving the public money. Centralized city functions would tend to increase coordination and efficiency, with an ultimate reflection in higher public service levels. Locating the police department and court within city hall on the Desimone.. property would continue the present necessity of transporting law offenders through the residential area.8 According to the police chief, this is an uncomfortable and unnecessary predicament. There may be problems with fire protection of city hall at the Desimone site, particularly if city hall is built of combustible materials .(wood construc- tion).9 The problem is one of inadequate water flow requirements at the site,:. and it is only partly resolved by the addition of sprinklers to the structure. This is due to the fact that the water pressure in the main water line along South 151st Street is approximately 3760 gallons per minute (gpm) while that required for a non - sprinklered building 20,000 square feet in size is 4100 gpm. If sprinklers are added, the necessary water pressure is reduced to 3100 gpm. 4. Utilities. Direct impacts: No impacts to water and sanitary sewer services are expected as a result of the rezone action. 7SEE, Attachment B. 8SEE, Attachment C. 9SEE, Attachment D. 13 Indirect impacts: Water and sanitary sewer utilities are sized for future expanon in the area and are capable of handling the requirements of city hall. Increased surface runoff is expected as impervious surfaces are created on the site. If present drainage patterns are maintained, down- stream flooding problems may occur. If this runoff is piped to 65th Avenue south, these downstream problems may be. averted. 5. Aesthetics. Direct impacts: No impacts to the aesthetic condition of the subject site are expected as a result of the proposed rezone action. Indirect impacts: Much of the quiet, sylvan character of the Desimone property will be diminished as a result of the construction of city hall and associated parking lots. In essence, much of what the City desires to save (i.e., the "naturalness" of the site) will be diminshed or eliminated by city hall construction. The relationship between city hall and the aesthetic condition of the site is an inverse one: the greater the size of city hall, the lesser the aesthetic condition of the site; and the lesser the size of city hall, the greater the aesthetic condition of the site. In this case, a city hall with 20,000 square feet of floor space has a much less adverse impact on site aesthetics than a 30,000 square foot structure. 6. Land Use. Direct impacts: As a result of rezoning the Desimone site to P -F, it is possible that other rezone requests to allow office or commercial uses will occur for other sites in the same general area. As the composition of the City Council changes in the future, the attitude toward permitting these rezone requests may change also. Indirect impacts: Construction of city hall will tend to have a stronger influence.. on rezone requests for office and commercial uses around city hall. Land use trends in the area may change from multiple - family residential to office and /or commercial use or to mixed office /commercial /and multiple - family residential uses. IV. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED Many of the adverse environmental impacts may be mitigated with a measure of foresight and planning. Increased surface runoff, generated by the addition of impervious sur- faces, could be diverted to the 65th Avenue storm sewer system, thereby averting any downstream flooding problems associated with the present drainage pattern. A well - architectured building might help to enhance site aesthetics. Fitting buildings and parking spaces into the "lay of the land" would limit the necessity of extensive excavation and filling while maintaining much of the site's existing vegetation. Generous landscaping after the structure is built would also help to retain the syl- van character and natural charm of the property. 10SEE, Attachment A. 14 V. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS 'A portion of the site's vegetation must be removed to provide room for building and parking spaces. Removal of vegetation will mean reduction of wildlife habitat, possibly expelling some species permanently. Land use trends in the Desimone vicinity may change somewhat from multiple - family residential to office and /or commercial uses. Also, law offenders will be trans- ported through the residential area in order to be brought to the police department. VI. ALTERNATIVES TO THE PROPOSAL Although in this case the construction of city hall is not the primary action but a secondary one based upon the rezoning of the property to P -F, the environmental impacts are more tangible and significant than those of rezoning the property. Therefore, this section will consider the alternatives to locating city hall on the Desimone site in lieu of addressing alternatives to the proposed rezone. A. DO NOTHING The "Do Nothing" alternative would entail maintaining the existing city hall facilities on the Tukwila Hill and on Southcenter Boulevard in an acceptable condition for an indefinite period of time. Expansion to accommodate new personnel or increased space needs would be accomplished through piecemeal additions to existing structures. Maintenance of facilities would be based on a long -term rather than a short -term basis. The primary advantage of this alternative is its initial financial savings to the community, for both sites and all structures are presently owned outright by the City. The environmental impact of this alternative would be low, amounting to much the same condition as that which -prevails`at the present time. Disadvantages are nuerous and wide - ranging. Maintenance and expansion costs , would be great considering the age and condition of some of the structures. "Over- crowding" of employees would be perpetuated and working conditions would be poor. The present problem of the public trying to find city hall (or the "right" city hall) would be perpetuated also. In addition, this alternative would continue the present policy of equipment duplication, increasing costs and decreasing service levels. B. CITY.HALL ON SOUTHCENTER BOULEVARD (ANNEX) SITE This alternative would'include the placement of all city departments in one or a series of buildings on the existing city -owned property at 6230 Southcenter Boule- vard. The present structure ,at this site would be razed. A conceptual site plan of this alternative, as drawn by Mithun Associates, is shown in Figure 2. Access would be from 62nd Avenue South with buildings (20,000 square feet floor space). generally facing south. 15 MS JSr I.... ST • /�I by A J ®I wr %•\ \s \V al S } • _ •_s r COPS OF TWllLA MAP 2. ALTERNATIVE SITES FOR TUKWILA CITY HALL* ST rAe ■_SNNIEER Ij BOULEVARD Q!' /1/ \ A S 7J TUKWILA CITY LINOS 16 erV Alternative #1 (maintain existing city structures at both locations) Proposed location of city hall (and site of rezone to P -F) Alternative #2 Alternative #3 —• - - - ° (SEE, APPENDIX j 1 AA��SMAD IN S .J FIGURE 2. CONCEPTUAIf -TTE PLAN FOR CITY HALL: ANNEX(" 'E t , NOTE: Like the sketch for the Desimone site, this architect's rendering is intended only to show the relationships between site and building /parking space. Drawn by M,ithun Associates a, • N -0 O -U > ..c +3 > r 4) •r r 00 N CO 0 S_ Ln 4--, S- e) En d) r 4) C (1) LO C O > r (1) V < 0 - -C - 4-3 'O 4-' .N N S_ z O M O O N Ln (P) (/) (/) .. FIGURE 3. TUKWILA CITY HALL SITE ANALYSIS The Mithun Associates, Architects Rating Scale: 1. Very poor 2. Poor 3. Average 4, Good 5. Very good CRITERIA FOR EVALUATION 5 2 5 a. Compatibility of proposed use with surrounding zoning 2 3 3 b. Accessibility by constituancy 5 3 5 c. Prominence of location (identity) 3 3 5 d. Appropriateness and efficiency of site size for proposed use 5 4 2 e. Adequacy and efficiency of site for future expansion 3 3 4 f. Vehicular accessibility 4 4 4 g." Accessibility of utilities 4 3 4 h. Accessibility for fire protection (site and buildings) 5 3 5 i. Solar orientation /energy conservation 4 2 5 j. View 3 4 2 k. Indigenous large tree growth 3 3 3 1. Suitability of soil and topography for construction 4 3 4 m. Minimum environmental impact of development (retention of natural site) 2 ' 3 5 n. Minimum site cost 4 3 4 o. Minimum development costs and constraints 2 3 2 p. Minimum impact from freeway and air traffic noise 3 3 4 q. Centrality for police functions 5 5_ 3 r. Minimum disruption of existing city functions 6,to 5-7 ((1 NOTE: Since these ratings are not weighted, addition of the scores would produce misleading totals. Each rating is just a matter of opinion. Some items are relatively unimportant and others very important depending on point of view. 18 2000 112TH AVENUE N. E. [ELL.EVUE, WASHINGTON 9r5)0,1 The primary advantage to this alternative is that, unlike the Desimone property, this site would not have to be purchased before construction could begin. Imple- mentation of this alternative could have a strong influence toward the establish- ment of an office district along Southcenter Boulevard. (This area presently has a proclivity toward office use and this alternative could cement it.) City hall on this site would be visible from the business sector of the town, but would be identified with the hill. Accessibility is facile, and traffic need not pass through residential areas in order to reach the site. Fire protection is expected to be better at this site than at the Desimone property. Police need not escort law offenders from the business /industrial areas through the residential area in order to bring them to city hall. Impacts to the physical environment as a result of this alternative would be insignificant due to the cleared and developed condi- tion of the property. Probably the most significant disadvantage to this alternative is the site's size (2.4 acres) which, by itself, may not allow for future expansion of city hall. Vacant properties exist to the west and to the north, but presently none of this land is owned by the City. C. CITY HALL WEST OF I -5 FREEWAY (SITE #5) This alternative would entail, purchasing approximately 6.9 acres located south of Southcenter Boulevard near 53rd Avenue South and erecting city hall. (This site was referred to as Site #5 in the Planning Commission's report on city hall location sites.) The primary advantage of building city hall on this site would be its location with respect to the future expansion of the City, if indeed the City would annex westward. At the present time, however, the site would not be central to the City of Tukwila. This site is large enough for addition of community center. Presently there are several ownerships in this area and acquiring the site may become a complex, tedious problem. Another disadvantage is the expected cost of the property which could be in excess of $600,000. Accessibility to this site varies depending on origin of trip. The noise levels at this site may also cause city hall construction to be more expensive in order to insulate against such. Development of community center on this site would not alleviate need for community park. The Mithun Associates, architects for Tukwila city hall, have evaluated all three sites (Desimone, Annex, and Site #5) for their suitability for city hall. Their analysis is shown in Figure 3. VII. RELATIONSHIP BETWEEN LOCAL SHORT -TERM USES OF MAN'S ENVIRON- MENT AND MAINTENANCE AND ENHANCEMENT OF LONG -TERM PRODUCTIVITY Improvements to 65th Avenue and 151st Street, land use trends and development in the general vicinity, as well as the existing Comprehensive Plan have collec- tively committed the Desimone site to uses higher than single- family residential. To preserve the Desimone site in its current condition on a short -term basis will have no significant effect on its long -term productivity from an environmental standpoint. 19 To preserve the Desimone site as an open space on a long -term basis would require public purchase of the property. From an environmental standpoint, it is doubtful whether the environmental gains of this course of action would justify such a decision. The proposed use of the property (i.e., city hall) would still allow a portion of the site to remain in its natural state. VIII. IRREVERSIBLE AND IRRETRIEVABLE COMMITMENTS OF RESOURCES As a result of the construction of city hall on the Desimone site, the greater portion of the existing forest environment will be permanently lost to buildings and parking space. The construction and maintenance of the improvements on the -site will require a commitment, of natural and human resources.. This development will require a long- term commitment of energy resources, water resources, and waste treatment facili- ties. In addition to the monetary commitment required to construct a city hall, the City of Tukwila will also lose approximately five acres of land from its property tax rolls. 20 .z. • ID he attempt to reply to your questions. tr Site I - Desimone Property C PU81 -U WD : K3 DEEPARTME T 8220 Southcenter yard Tukwila, W hingiton 88 L 7 telephone B a cri S 9 r.,; 42-2177 July 21, 1976 M E M O R A N D U M To: Fred Satterstrom, Planning Department From: Dick Williams, Public Works Department Subject:. Environmental Impact Statement on City Hall Site Aitetaimetitt is Per your request of 20 July 1976, I have researched our records and will g( EL 1. Water & sanitary services are available to Site I. i 2.._ Lines are sized for future expansion in the area. 3. a. Sanitary sewer - 8" stub to property line from UJ • 65th Ave. So. el b. Water - Main line 10 ", stubs to property line from 65th Ave. So. and 151st Street: 4. a. Sanitary sewer - Inside right -of -way. b. Water - Inside right -of -way. W 5. No problems with sanitary sewer or water services. Ul 6. Present run -off flows in a Southwesterly direction off the property and dissipates. Future run -off generated E by construction improvements shouhd be piped to 65th Ave. So. CO 7. Any increase in run -off that follows existing pattern could cause problems downstream from site. See paragraph 6. E Ea X11 z z Site II - 6230 Southcenter Blvd. 1. Water and sanitary sewer are available to Site II. 2. Lines are sized for future development. 21 Memorandum - Fred Lterstrom July 21, 1976 Page two 3. a. Sanitary sewer located on North side of Southcenter Blvd. b. Water - See attached sheet. 4 a. Sanitary sewer - Inside right -of -way. b. Water - Inside right -of -way. 5. No problems with sanitary sewer or water services. 6. Only collection point is at Southwest corner of property and all run -off ends up on W.S.H.D. property, I -405. 7. No problems providing run -off remains in same pattern as existing. I hope this information answers your questions. If not, don't hesitate to holler. RKW /dp Attachment 22 Dick Williams, Engineering Technician 7 14r 'SE.t' /C f 2.c' °.45'Eil' ,,V..✓. u N ' Y.& :77 /F.Fy;_,-- Q ■ 4R .? / ,OE r0 Ser .B.?,4/OONE'O' .E1=4 cr 1 OC4 r/Q N U,t/ieo wN -/ee/iid y4' h,EUSE... .4. e©ie.Ve . 41 ' 8 "ci P /P.a; G.Y. 1 F'TT /NGS /1 Er✓, >YE'vSE 4!45.s /wgty�' ',a, 1/ //71, o �✓� &ivy /- 8 "n8 .%, '172-4,-, /L. / -8 "614 Ft x/LP✓ CONA/fe r/DA_ND,' A'Ei190YE ''el/ X1■047 CONNECT_ /= 8'.90°,9e4/4m,,, ' xL / - G "G Y, FL. ,x. '• ✓. - 8 :40A F7014, Ft, x 1.. ✓ ' H /G� / /fr4Y CROS3/NC N0.2 6 "": /.,. /N /,' "4.0. STEL C4S /4/G, .,S"D't L DNG %'WALL _5" X.4 X.d" Y. OE"PrS,4'.4,- CS. ",.7.1 f) //lc ///awJ Y CA'o- ssi.vs No. 8 "c'/ /4//"571.: C4S /NC 4 "4/4t.0 �E.P STA re- //z.441 .0E-...oT S. iFCS. TO MINI -MEMO Fred Satterstrom Planning Department Steven M. Hall, P.E. Public Works Director Department of Public Works City of Tukwila 6230 Southcenter Blvd., Tukwila, Washington 98067 Alb SUBJECT E.I.S. - City Hall Site DATE 4 August 1976 In reference to your memo of 20 July 1976, the Public Works Department has taken . count on So. 151st Street and will be receiving processed data within the next few days. As to Southcenter Blvd., we will be setting counters at this location 'this week and will have the data back in processed form in approximately two weeks. As far as your second question on additional volume of traffic to or from City Hall, the impact would be minimal because of the current need for physical communication between City Hall and the Annex, and the present location of the Police Department. The impact of the additional traffic generated through the City Annex would be approxi- mately 10 - 30 cars xSkQNklk per day. Therefore, in my opinion, the traffic impact xiW6c would be fairly minimal. However, I do feel that the presence of Police vehicles operating through a major population center (Maple Crest Apartments, Canyon Estates) and the Tukwila Elementary School pose safety problems during the hours that children are going to and coming from school. DATE 4- RETAIN WHITE COPY FOR OUR FILE. SEND ❑ YELLOW, ❑ PINK COPY TO CUSTOMER. NO REPLY NECESSARY ❑ PLEASE REPLY ❑ TELEPHONE ❑ RETURN ENCLOSED MEMO WITH REPLY 24 July 29, 1976 Atuiet1" C TO: Fred Satterstrom FROM: John A. Sheets, Chief of Police`\ SUBJECT: Environmental Impact Statement on City Hall Site Pursuant to your request for Police Department input on the location of the Police Department facility in the new City Hall, we offer the following comments: 1 Police facility located in the residential area will sub- stantially increase vehicle or traffic in that area. Some of that traffic will be made up of criminals and motor vehicle traffic Ordinance violators who are appearing or making arrangements to appear in Court. Other vehicle traffic will also increase in the area since a variety of people will need to come to Police Station for a variety of licenses, plan reviews, etc. 2 Police vehicles responding to an emergency from the station will be required to travel through a residential area. This would not be an unusual occurrance since the officers assigned to the Detective Division often respond from the station to the scene of a major crime. 3. If the Police Department is located in the residential area, it will also mean that we will be exposing that area to known criminals who have been arrested for other crimes, usually in the industrial /commercial area. We would, in effect, be giving those persons a guided tour of our residential area which they may use in the future, for criminal escapades in our City. 4. Any facility located in the residential area will also increase the difficulty that members of the general public and other law enforcement agencies will have in locating the facility. 5. It is our opinion that the Police Department should be located in the commercial /industrial area since it would have the least amount of impact on the environment in that area. For the above stated reasons, it appears to us that it would be logical to place the police facility away from the residential areas of our City. 25 T®: FROM: SUBJECT: DATE: DFG- aCE MEMO CITY 0 F T U IL FIRE DEPAR'TMEN'T FRED SATTERSTROM HUBERT H, CRAWLEY, FIRE CHIEF ENVIROMENTAL IMPACT STATEMENT ON CITY HALL SITES JULY 27, 1976 AltacM vvie '- D PER YOUR REQUEST OF 21 JULY 1976 I AM FORWARDING RESULTS OF THE WATER FLOW TESTS AND CALCULATIONS FOR FIRE FLOWS ON ESTIMATED STRUCTURES, ALSO, I AM TAKING THE LIBERTY OF ENCLOSING THE REPORT TO THE MAYOR IN REGARDS TO THE SAME SUBJECT, DATED 13 JULY 1976, As YOU WILL NOTE THERE ARE CERTAIN QUESTIONS IN REGARDS TO THE AMOUNT OF WATER AVAILABLE, THAT SHOULD BE ADDRESSED IN BOTH LOCATIONS, HUBER H. CRAWLEY FIRE CHIEF 26 \\ JI • II \ ••• tli /.1 t:; sr. 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TE Q EILTECIFICE=.=C-c 1� , f - ...■■. s����..�QQ..���■■ _� 33-- -5-- — — —�8.. :�� :�E :E i 3 �'gm°- Q = =a= _�--• �GGi��Gi a9�3fl rQie:r rr5r ..■i.- iC- -- �.:�.- :�..u...-:...i .-i-. --. 51-�i�•a•�is iii i. =.•i -�. :Imo= =a= -- - i- i 1.5 2 '25 35 45 as 75 9.5 10 a. r 0. CO to a OFC CE MEMO 1TY OF TUK IL FIRE DEPARTIVIEIVT TO: MAYOR ED BAUCH FROM: HUBERT H. CRAWLEY FIRE CHIEF SUBJECT: WATER FLOW FOR NEW CITY HALL DATE: JULY 13, 1976 PER OUR CONSERVATION DURING STAFF MEETING OF JULY 12, ENCLOSED YOU WILL FIND•THE RECOMMENDATION FOR FIRE WATER. FLOW FOR THE PROPOSED CITY HALL SITE. THIS CHART WAS ARRIVED AT BY FORMULA USED BY THE INSURANCE SERVICE OFFICE. As YOU WILL NOTE SQUARE FOOTAGE AND TYPE OF CONSTRUCTION EFFECT. THE AMOUNT OF WATER REQUIRED. IT IS MY HOPE THAT THE ARCHITECT RETAINED BY THE CITY IS ALSO CONSIDERING FIRE SPRINKLERS FOR THE BUILDING. THE CITY HAS SUFFERED ONE LOSS FROM FIRE AND THE INVESTMENT REQUIRED FOR THE INSTALLATION OF SPRINKLERS WOULD BE SMALL CONSIDERING THE LOSS TO THE CITY IN THE EVENT OF A FIRE. MOST ARCHITECTS WILL RESIST THE INSTALLATION OF SPRINKLERS, BECAUSE OF THE DISTRACTION FROM THE APPEARANCE., IF THE BUILDING IS IN EXCESS OF 20,000 SQUARE FEET CITY ORDINANCES WILL MANDATE SPRINKLERS, BUT MY CONCERN IS WHEN THE BUILDING, AND IF THE BUILDING, IS UNDER 20,000 SQUARE FEET. 30 BASIS OF FORMULA 20,000 SQUARE FEET (NON - SPRINKLERED) 20,000 SQUARE FEET (SPRINKLERED) 30,000 SQUARE FEET CITY OF TU KWILA PROPOSED CITY HALL BUILDING FIRE FLOW REQUIREMENTS FOR FIRE SERVICE TYPE V (COMBUSTIBLE) TYPE III -N (ORDINARY TYPE III -1 HR. F.RESTIVE 4100 G P M 2800 G P M 1800 G P M 3100 G P M 2100 G P M 1350 G P M (NON - SPRINKLERED) 4950 G P M 30,000 SQUARE FEET (SPRINKLERED) 3700 G P M 3300GPM 2100 GPM 2500 G P M 1600 G P M ATTACHMENT E The following maps are site analyses taken from the Planning Commission's 1973 report on alter- native sites for the city hall complex. 32 SITE #: Five LOCATION: South of • Southcenter Boulevard and West of 53rd Ave. S. AREA: 6.9 acres, 300,560 sq.ft. ZONING: C-2 Local Retail TOPOGRAPHY: Gently sloping • MAIN ACCESS:53rd. Ave. S. ADJACENT USES: Public Rights-of-way and commercially zoned property. UTILITIES: Existing sewer, water and utilities are adequate, however approximately $25,000 would be required for street improvements. SITE PREPARATION: Fill not required PROPERTY COST:$2.15/sq.ft., $646,000 TOTAL COST: PROPERTY SITE PREPARATION UTILITIES $646,000 $-25,000 $671,000 - $2.23/sq.ft. 33 • •") .16 • f6 ISAi5 Tukwila I • 7: ' " 1. isA .too 15; ...••• '..."......' ...,.. ....,. . ......,,.. .e,„. .. .. .. • ...",„,....„ . • . .. ,, ,, . • • SOUTH G. EN • • ..s. • • . . ERSTATE'HWY- owreo Access .- ,tak , „ • 475.7 5 ' . • SITE #: LOCATION AREA: 6. ZONING: TOPOGRAP MAIN ACC ADJACENT UTILITIE SITE PRE Six North of Southcenter Boulevard and east 2 acres, 271,800 sq.ft. R-M-H, High Density Multi-Family Residential Hy: Moderately sloping to.the Northeast. ESS: 62nd Ave, S. and Southcenter Boulevard. USES: Multi-Family Residentially and Commercially zoned property. S: Sanitary sever, water and power are adequate, street and storm sewer improvements to be financed by outside sources entirely. PARATION: Fill not required • • PARKWAY of 62nd Ave. S. PROPERTY COST: $1.58/sq.ft., $429,444 TOTAL COST: • PROPERTY SITE PREPARATION UTILITIES $429,444 $429,444 - $1.58/sq.ft. 34 I - 1•- t 21 ti 1 11 11 11 11 11 1 24 �_� - - - -- 1 NN. NI\ -X .N /20 "s:5. z „A 1A _ 140/?R4SOti V .1 11 1 � 1 7• I I I tt i 33` 32131, 30; ..9 2o 1. -1 7 1 8 1 9 i.9 11 112.1 i3 !s .gCjN>rvni 1 4.1ri 4. 1 t NQO 1 J,/ may` 3 9 • I I i .� 1: 12 1 I 1 i IY- I: 3S i 34• ; 33 13213i ! 5 0 I vqc. S/ 111. i • i t li -S - 154771 L - SITE #: Three LOCATION: South of S. 151st St. and west of 65th Ave.. S... AREA: 12.3 acres,. 535,790 sq.ft. ZONING: R -1 -12.0, Single Family Residential (Multi -Fam. Residential. on Cornpr. Plan) - TOPOGRAPHY: Moderately sloping with a few steeper areas, varies from 132' to 192' MAIN ACCESS: 65th Ave: S. and S. 151st•St. ADJACENT USES: Single family residential, undeveloped and multi - family property UTILITIES: Approximately $70,000 would be required for extensions to existing utilities. /5;6!7 SITE PREPARATION: Fill not required PROPERTY COST: Approx. $0.75 /sq.ft., $401,840 TOTAL COST: PROPERTY $401,840 SITE PREPARATION 70,000 UTILITIES $471,840 - $0.88 /sq.ft. 35 COMMENTS TO DRAFT EIS CITY OF N'T August 17, 1976 Fred N. Satterstrom, Associate Planner Office of Community Development 6230 Southcenter Boulevard Tukwila, Washington 98188 RE: Draft Environmental Impact Statement City. Hall Rezone. Dear Fred: I have reviewed this draft impact statement and find that it covers the proposed action very well. My only comment is concerned with possible unavoidable adverse impacts related to noise. A City Hall is an activity center which draws vehicular traffic to it during daylight hours and,as such, in a resi- dential neighborhood there could possibly be some loss of quietness that is associated with daytime living in a residential area. Thank you for the-opportunity to review and comment on this impact statement. /cg ery truly yours, es P. Harris anning Director AUG 'L 11 cr Y Of TUKWILA. 37 P.O. BOX 310 / 220 SO. 4th AVE. / KENT, N /ASHiNGTON 98031 / TELEPHONE 12081 872 -3300 . RESPONSE TO . COMMENTS TUKW LA PLANN3NO DEPARTMENT RESPONSE TO KENT PLANNING DEPARTMENT: 1'. Your comments to the Draft EIS are appreciated. 2. Your suggestion that the additional vehicular traffic generated by city hall would reduce the quietness associated with living in a residential area is a good one. The section on noise impacts has been expanded to reflect this idea. However, rather than state this impact would occur only during daylight hours, we stated that there would be a general loss of quietness for it is quite likely that evening meetings and police operations would generate vehicular noise during the nighttime as well. r 38 sg COY Of WOO. September 7, 1976 Fred N. Satterstrom, Associate Planner Office of Community Development 6230 Southcenter Boulevard Tukwila, Washington 98188 Dear Mr. Satterstrom: State of Mshington Department • of Ecology Thank you for the opportunity to review the draft environmental impact statement for the Proposed Rezone of Desimone Property to P -F (to allow city hall). It appears to be a fairly comprehensive impact statement. We have no other comments to make at this time. If you have any questions, please feel free to contact me at 753 -6892. BJ:bjw Sincerely, Barbara Jans &n Environmental Review Section Daniel J. Evans, Governor. John A. 3igg3, Director- Oiyir.pia, Wa >hingten 98504 Telephone (2.06) 753 2800 39 THE LJ E J V U • L'HUN ASSOC August 18, 1976 AT Fred N; Satterstrom, Associate Planner Department of Community Development City of Tukwila 6230 Southcenter Blvd. Tukwila, Washington 98067 Dear Fred: J E C 1 S Enclosed is an updated version of the Tukwila City Hall Site Analysis prepared by our firm for the City Council. The analysis has been expanded to include the site located at the corner of Southcenter Blvd. and 53rd Avenue South in compliance with your request for this additional information. I hope that this will be of value to you in the preparation of the final EIS. Very truly yours, Thomas D. Emrich rc itect cln Enclosure c: Edger D. Bauch, Mayor City of Tukwila 2000 112TH AVENUE N. E. c BELLEVUE, WASHINGTON 98004 454 • 3344 PROPOSED REZONE . OF DESIMONE PROPERTY TO P • F C TO ALLOW CITY HALL lob ENVIRONMENTAL IMPACT STATEMENT CITY OF TUKWILA OFFICE OF COMMUNITY DEVELOPMENT AUGUST 1978 PROPOSED REZONE OF DESIMONE PROPERTY TO P -F (T0 ALLOW CITY HALL CONSTRUCTION) NATURE OF THIS REPORT: Draft Environmental Impact Statement TYPE OF REQUEST: Rezone (R.1 -12.0 to P -F) SPONSOR: City of Tukwila LEAD AGENCY: City of Tukwila Note: This Environmental Impact Statement has been prepared for the rezoning of the Desimone site from R.1 to P -F in order to allow city hall to be built on the property. Because of the inter - dependence of these two proposals (the rezone and city hall con- struction), the environmental impacts of both actions are collec- tively discussed in this EIS. INTRODUCTION A. ACTION /ACTION SPONSOR This draft environmental impact statement has been prepared for the rezoning of a 5 -acre parcel of land located at the southwest intersection of 65th Avenue South and South 151st Street, commonly known as the Desimone property, from R.1 -12.0 (Single - family Residential) to P -F (Public Facility). The P -F zoning classification would allow the governmental headquarters of the City of Tukwila to be constructed on the site. The sponsor of the rezone action is the City of Tukwila. B. LEAD AGENCY The lead agency for this action is the City of Tukwila. The Office of Community Development is responsible for the preparation of the EIS and compliance with SEPA regulations. The Responsible Official is Kjell Stoknes, Director of the Office of Community Development. Contact Person: Fred N. Satterstrom, Associate Planner Office of Community Development 6230 Southcenter Boulevard Tukwila, Washington 98188 (206) 242 -2177 C. PRINCIPAL CONTRIBUTORS TO DRAFT EIS Tom Emrich Steve Hall — Architect,.Mithun'Associates — City of Tukwila, information Dick Williams — City of Tukwila, counts John Sheets — City of Tukwila, protection Hubert Crawley — City of Tukwila, Public Works Director; circulation Engineer; utility information, traffic Police Department; impacts on police Fire Department; fire safety information Carl Stixrood — City of Tukwila, Landscape Architect; biological /botanical input. D. OTHER LICENSES /PERMITS REQUIRED A waiver from the provisions of Resolution #489 is required prior to official action on the rezone. i E. LOCATION OF EIS BACKGROUND DATA Much of the background information to this draft EIS can be found in the document "Data Inventroy: Tukwila Planning Area — 1975." This document, along with other pertinent maps, records, and information can be reviewed at the Office of Community Development, 6230 Southcenter Boulevard in Tukwila. F. COST TO. PUBLIC OF DRAFT EIS $0.75 G. DATE OF ISSUE OF DRAFT EIS August 9, 1976 H. COMMENT DEADLINE ON DRAFT EIS September 14, 1976 ii. TABLE OF CONTENTS INTRODUCTION DISTRIBUTION LIST SUMMARY I. DESCRIPTION OF THE ACTION II. • EXISTING ENVIRONMENTAL CONDITIONS III. ENVIRONMENTAL IMPACT OF THE PROPOSAL IV. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED V. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS VI. ALTERNATIVES TO THE PROPOSAL VII. RELATIONSHIP BETWEEN LOCAL SHORT -TERM USES OF MAN'S ENVIRONMENT AND MAINTENANCE AND ENHANCEMENT OF LONG- TERM PRODUCTIVITY Page 2 11 14 • 15 15 19 VIII. IRREVERSIBLE AND IRRETRIEVABLE COMMITMENTS OF 20 RESOURCES ATTACHMENTS A B C D E' 111' • DISTRIBUTION LIST DENNIS LUNDBLAD, HEAD ENVIRONMENTAL REVIEW Department of Ecology Olympia, Washington 98504 BRIAN BEAM, ENVIRONMENTAL PLANNING DIVISION Puget Sound Council of Governments . Grand Central on the Park Seattle, Washington 98104 JAMES P. HARRIS, PLANNING DIRECTOR Kent Planning Agency P.O. Box 310, City Hall Kent, Washington 98031 GORDON ERICKSEN, PLANNING DIRECTOR Renton Planning Department 200 Mill Avenue South Renton, Washington 98055 OMER MITHUN Mithun Associates - Architects 2000 112th Avenue NE Bellevue, Washington 98004 1 SUMMARY A. THE PROPOSAL This draft Environmental Impact Statement has been prepared for the City of Tukwila's application for a change of land use classification from Single - family Residential (R.1 -12.0) to Public Facility (P -F) on a 4.8 -acre site located at the intersection of 65th Avenue South and South 151st Street and commonly referred to as the Desimone property. The reclassification of land use from R.1 to P -F will allow the construction of a city hall on the site. The objective of the land use reclassification is to obtain zoning for the property which properly permits the construction of governmental offices. The City of Tukwila has informally studied the site for its suitability for this purpose and has shown a definite public interest in constructing the city's governmental headquarters on the property. B. DIRECT AND INDIRECT IMPACTS 1. Impacts to Physical Environment. No direct physical impacts are anticipated as a result of the proposed rezone from R.1 to P -F. As a result of the construction of a city hall, several physical impacts are anticipated. City hall construction will necessitate the alteration of topo- graphy on a portion of the site; the magnitude of which is dependent on the size of the facility. Some excavation and some filling will be necessary. Existing tree cover will be reduced in proportion to facility size. A reduc- tion in wildlife habitat will accompany the partial removal of vegetation. The rate of storm water runoff is expected to increase while runoff water quality is expected to decrease. Noise and air pollution will increase insignificantly as a result of city hall construction. 2. Impacts to Human Environment. The rezoning of the subject site from R.1 to P -F is expected to have little, if any, direct impacts on the human environment. Several impacts are anticipated as a result of the indirect action of locating city hall on the site. Resident population on the site will be displaced by 50 - 75 employees who will work in city hall. Traffic volumes are expected to increase on 65th Avenue South and South 151st Street. The area may experience a proclivity toward other similar office and /or commercial uses, which would change the existing character of the area. . C. ALTERNATIVES Three alternatives are considered in detail in the draft EIS. 2 The first alternative is "No Action," which entrails maintaining the existing, scattered city offices. Under this alternative, the maintenance and upkeep costs are expected to be high since the existing structures must be brought up to standards in order to lengthen their lifespan. Employee "overcrowding" is expected under this alternative as the city grows and its services expand. Overcrowding will cause a need for piece -meal expansion of existing structures creating, in turn, another cost of maintaining these structures. This alterna- tive maintains the present inconvenience which the public encounters in finding the "right" city hall, and also adds to the duplication of facilities and equipment. Alternative two consists of building the city's head offices on what is commonly referred to as the Annex site at 6230 Southcenter Boulevard. This site is already owned by the City of Tukwila and would not require rezoning to allow for city hall. Under this alternative, the benefits of consolidation which come about as a result of locating all city offices in the same building (or on the same site) are identi- cal to those of the proposed action. Alternative three entails purchasing land west of I -5 at 53rd Avenue and South - center Boulevard and erecting city hall. This location would be central to the City if it expanded westward but site costs and city hall construction costs would be high. D. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED Site and building design and layout can at least keep adverse environmental impacts to a minimum. By conforming building design and parking layout to the topographical and botanical conditions of the site, disruptions to the topography, vegetation, and wildlife can be held to a minimum. E. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS The primary unavoidable impacts include the partial, inextricable loss of vege- tation and-the reduction in wildlife habitat caused by buildings and parking. space. In addition, traffic volumes on adjoining streets will swell during business hours, and trends in land use in the vicinity may change to office and /or commercial types. 3 I. DESCRIPTION OF THE ACTION A. THE PROPOSAL The City of Tukwila is proposing to rezone a 4.8 -1cre wooded lot, commonly referred to as the Desimone property, from R.1 -12.0 to P -F. The property is located at the southwest corner of the intersection of South 151st Street and 65th Avenue South. The purpose of the rezone request is to allow a city hall to be constructed on the site. For several years, the City has studied various locations for a new city hall complex, and considerable interest has been shown in the subject site. As of the date of the draft EIS, the Desimone property had not been purchased by the City of Tukwila. However, an appraisal has been completed which values the site at approximately $105,000. Trapezoidal in configuration, the subject site is s.tuated in the southwest corner of the intersection of 65th Avenue South and South 151st Street (SEE, Map 1.) at the southern crest of the Tukwila Hill. One single - family home presently occupies a portion .Jf the northwest corner of the lot and a small clearing is situated in the centor, but the majority of the 4.8 -acre parcel is wooded. Figure 1. depicts a conceptualized building and parking layout for the Desimone property as drawn by the architects for the project, Aithun Associates of Bellevue, Washington. Total floor area of the city hall structure depicted in Figure 1. is 20,000 square feet. B. MAJOR ASPECTS OF THE PROPOSAL The City of Tukwila proposes to rezone the Desimone p:y erty from R..1 to P -F and . to constructa city hall on the site. Construction of :ity hall would entail clearing grading, and filling areas of the site for building and parking spaces. The antici- pated floor area dimension of city hall is approximately 20,000 square feet. C. LAND USE PLANS AND ZONING REGULATIONS According to the existing Tukwila Comprehensive Plan drafted in 1962 by John Graham Company and revised in 1967, the Desimone property is located in an area designated "Multiple Family Residential ".. It should be n,;ted that the northern boundary of the subject site (or South 151st Street) marh the division between multiple and'single- family residential areas on the Land lse Map. Although not yet officially adopted, the new Comprehensive Plan Land Use Map (as proposed by citizen review committees) designates the subct site for "medium - density" residential use. Medium - density is defined as b oween 6 - 17 units per gross acre and is characterized by duplexes, triplexes, aid. fourplexes. This class- ification is subject to change as a result of public hearings on the Land Use Maps.. L=11 C-3:17111i-..31= \ \ 5 .I531-.22 Nt„ CITY OF PA H. MAP 1. VICINITY MAP OF PROPOSED REZONE (DESIMONE PROPERTY) ST M■M ST Site of proposed rezone to P- and proposed city hall for Tukwila. 1 IS ST MTE TATE FREEWAY .4 T1.1.0,1 •ROWM ,AL1,11(1,ER DOULE WAD TuxwiLt, CITY LIMITS 5 FIGURE 1. CONCEPTUAL SITE PLAN FOR CITY HALL: TESIMONE SITE NOTE: The figure illustrated above is only an architect's sketch of what city hall might look like from the air on the Desimone property; it is not a hard and fast layout plan. It is included here so that the reader can get a feel for the relationships which exist between building, parking space, and site on the Desimone property. Al'alirr/i I N, 7-4— cat,‘ c'cc Presently the subject site is zoned R.1 -12.0, Single - family residential. Residential lots in this zone must have an area of 12,000 square feet or more. Adjacent properties to the south, west, and north are zoned for single- family residential use also. On the east, however, properties are zoned (and used) for multiple - family residential use. The requested zoning classification, P -F (Public Facility), would restrict use of the subject site to those uses specified in the Tukwila zoning ordinance, TMC 18.44.020. Generally these uses are schools, hospitals, educational institutions, libraries, governmental office buildings, parks, playgrounds, and public meeting halls and auditoriums. Other uses may be permitted in the P -F zone district only after issuance of a use permit authorized by two- thirds vote of the City Council, (SEE, TMC 18.44.030). Construction of a city hall qualifies as a "governmental office building" and is allowed outright in this zone. D. HISTORICAL BACKGROUND OF PROPOSED ACTION The need for a,modern, centralized city hall structure has long been recognized by the City of Tukwila. In 1973 a study was done by the Planning Commission which analyzed and made recommendations on 10 sites for city hall. Their study was called "City Hall Complex Location Analysis ", and as a result of the study, three sites were recommended to the city council for the location of city hall. These sites were, in order of preference, Site #10 (VanWoerden property), Site #6 (City Hall Annex property and Site #9 (City Light property). Site #6 was designated as second choice only with the provision that additional land be obtained to the east to augment the 2.4 - -acre parcel. Since the initial study by the Planning Commission, considerable time has been spent by the City Council in discussion of a city hall site. Early in 1976, a City Hall Construction Flow. Chart was unofficially adopted by the Council. Selection of a site for city hall was designated as a first step on the Flow Chart. On 7 Jw:e 1976, the City Council undertook this step and passed a motion establishing the Desimone propert as the city hall site. The proposed action of rezoning the Desimone property from R.1 to P -F is necessary to allow the secondary action, that of building city hall. II. EXISTING ENVIRONMENTAL CONDITIONS A. PHYSICAL ENVIRONMENT1 1. Earth. (a) Geology and Soils: A very thin layer of soil overlies bedrock on most of the Desimone site. Bedrock geology is composed of sedimentary rocks laid down inpre- glacial times and basal- tic -type rocks which have'intruded into these deposits. The thin soils above are comprised largely of till left behind by great glaciers which advanced over the region several times and then melted back again 14,000 to 100,000 years ago. 1Much of the information concerning the physical aspects of the environment on the Desi- mone site has been taken from the document entitled "Data Inventory: Tukwila Planning Area," 1975. 7 The primary geologic characteristic of bedrock is its stability. Bedrock provides excellent foundation stability for heavy structues (as city hall would be), stands well under seismic disturbance, and maintains good slope stability. However, sedimentary and basaltic -type rocks are difficult to excavate and tend to inhibit large-scale alterations of the natural land - form. . (b) Topography: The subject site lies on the southern crest of the Tukwila Hill. Elevation on the site reaches to approximately 186 feet in the northeastern corner of the property. The lowest elevation is about 140 feet in the southwestern corner. A U- shaped ridge, with two north -south axes running along the east and west sides of the property and an east -west axis running along the north property line, is discernible on the site. The east and west sips of this ridge rise rapidly while the slope inside the "U" is more gradual. A nearly level piece of ground, approximately one to one - and -a -half acres in size, is located within this "U" on the eastern half of the site. A small ravine is located on the western edge of the property. A partial fill for a once contemplated extension of 62nd Avenue South juts into the ravine about 150 to 200 feet. The fill extension is now densely overgrown and hardly discernible without walking the property. 2. Air. According to the Puget Sound Air Pollution Control Agency, . air quality in the Tukwila area is marginal. Concentrations of suspended particulates are cur- rently increasing and particle fall out is also considered high. Air quality .conditions reach their lowest levels during June - September, when precipita- tion and winds are lightest. 3. Water. =, Because of the bedrock which underlies the thin surface soils, percolation of water into subsurface strata is probably minimal except in places where the bedrock is severely broken up or fissured. Consequently, much of the precipitation which falls on the property is turned directly into surface runoff,during the rainy season. Due to the slope of the property, drainage on the site is predominantly to the south. Surface runoff collects in two ill- defined ravines and flows overland into a small, marshy basin just south of the property forming a marsh or pond during much of the year. A poorly- drained marsh or swamp exists along the western edge of the property where the ridge plunges into a small ravine. 2As of the date of the pre - draft. EIS, no survey had been completed for the Desimone property. Information concerning the "lay of the land" is the result of an on -site field investigation by staff and an analysis of Walker F, Associates topographic maps. 4. Flora.3 The Desimone property is heavily forested with a second - growth canopy of coniferous and deciduous trees, the latter vastly outnumbering the former. One huge western red cedar, which stands in a low area along the property's western edge, may be the only "old growth" tree on the site. The predominant specie found on the property is the broadleaf maple. These maples are usually tall, mature, and widespreading. Other deciduous varieties include red alder and willow, and lesser numbers of black cottonwood, wild cherry, and pacific dogwood. Coniferous varieties are found mostly in the southwestern portion of the site and include scattered stands of tall Douglas Firs, western hemlock, . and western red cedar. Understory vegetation is dense and comprised largely of hazelnut, vine maple, pacific elderberry, and indian plum. Wild blackberries, huckleberries, and oregon grape are scattered about the property, and various ferns mat the damp, poorly- drained areas. A clearing exists on the eastern half of the property in which wild and domestic grass species abound. 5. Fauna. The forested environment of the Desimone property provides forage and shelter for a variety of birds and mannals. Rabbit, skunk, weasel, squirrel, and possibly raccoon are expected to inhabit the site. Although no on -site bird observations /counts have been made, it is expected that robin, sparrow, starling; crow, blackbird, and bluejay are the most common species. 6. Noise. The ambient noise level (without vehicular traffic) on the Desimone site is approximately 60 - 65 dba.4 Vehicular traffic passing by momentarily measures between 70 - 90 dba, depending on vehicle type and location of noise measure- ment. ..Generally, noise originating from traffic moving uphill on 65th Avenue South is louder than traffic moving along South 151st Street which is level. 7. Natural Resources. The forest on the Desimone site represents a wood and pulp resource, although the importance of this site to the forest products industry is negligible. Also, the basaltic -type rocks found on the site represent a potential quarry rock resource although the actual quality or grade of such rock has not been determined. 3Information concerning vegetation was gathered during an on -site investigation of the Desimone property, 16 July 1976. 4Noise measurements taken on Desimone site, 30 July 1976, by Staff member of Office of Community Development. 9 B. HUMAN ENVIRONMENT 1. Population and Housing. There is one housing unit on the Desimone site which is occupied by one person. The housing unit is a single- family home, approximately 25 years old, and in good condition. 2 Transportation /Circulation. The Desimone site is located along an arterial road, improved with U.A.B. funds in 1971, which traverses the Tukwila Hill from Southcenter Boulevard to Interurban Avenue. Along the east side of the property this arterial is called 65th Avenue South, on the north side it is South 151st Street. The cross section of this arterial is the same throughout: two driving lanes, two parking lanes, sidewalks (both sides), curb and gutter. Current traffic volumes on 65th Avenue South and South 151st Street are light. .The average daily traffic is approximately 1265 vehicles, with peaks s of about 75 -85 vehicles per hour at 11 AM and 100 - 115 vehicles at 4 - 5 PM. The subject site is served by METRO- operated buses which run along 65th Avenue South and South 151st Street. 3. Public Services. Public services are provided to the subject site by the City of Tukwila. A recently built, well - equipped fire station, operated and staffed by the City, is located within four blocks of the site. The subject site is located within the South Central School District No. 406. 4. Utilities. Water and sanitary sewer services are available to the Desimone site and the Tines are sized for future expansion in the area. An 8 -inch sanitary sewer stub is available to the property from 65th Avenue South. A 10 -inch main water line with stubs to the Desimone property exists along both 65th Avenue South and South 151st Street. 5. Aesthetics. The quiet, sylvan setting of the Desimone site and the properties which adjoin it to the south and west contrasts with the more urbanized character of the surrounding area. The area in which the Desimone property is located represents one of the last, large undeveloped residential tracts of land on the Tukwila hill. 6. Recreation. No studies have been done to determine the public use of the Desimone property for recreational purposes, but it is anticipated that any such use is minimal. The ruggedness of the site and the fact that it is in private ownership tend to discourage public use. 5 Traffic counts were taken on South 151st Street by the City of Tukwila Public Works Department over a 4 -day period, July 24 - 27, 1976. 10 7. Land Use. The Desimone property is generally located within the Tukwila Hill residen- tial area. The Maple Crest and Canyon Estates Apartments are located across 65th Avenue to the east. Properties to the north, south, and west of the subject site are currently undeveloped. Land use trends in the area are for multiple - family residential use, although development to such use has been slow in the past several years. III. ENVIRONMENTAL IMPACT OF THE PROPOSAL For the purposes of:.this section, two types of impacts will be discussed: direct and indirect impacts. Direct impacts are those effects which are expected as a result of the rezone action from R.l to P -F. Indirect impacts include those effects which may be expected as a result of city hall construction on the Desimone property. A. ENVIRONMENTAL IMPACT ON THE NATURAL SYSTEMS 1. Earth. Direct impacts: No impacts to the geology or topography are anticipated as a result of the rezone. Indirect. impacts: Future development of a city hall structure and parking lots will necessitate some excavation and filling, altering the existing topography. While the stability of the ground on the site is good for large structures, the underlying bedrock makes excavation difficult. As a result, site preparation costs may be increased. 2. Air. Direct impacts: No impacts to the atomosphere are expected as a result of the rezone action. Indirect impacts: Development of city hall will increase auto traffic in the general area. This additional traffic will cause increased vehicular pollutants in the air around the site. This impact is expected to be insig- nificant and will not, by itself, detectably decrease air quality in the Tukwila area. 3. Water. Direct. impacts: No impacts to surface or subsurface waters are anticipated as a result of the rezone action. Indirect impacts: Surface runoff will increase as a result of the construc- tion of city hall and associated parking space. This additional runoff, if not diverted from the present drainage pattern, will drain into a marshy area to the south of the property and could possibly cause problems downstream.6 6SEE, Attachment A for discussion of surface runoff problems. 11 4. Flora. Direct impacts: No impacts to vegetation are expected as a result of the rezone action. Indirect impacts: Construction of city hall and parking space will neces- sarily displace much of the existing tree and groundcover vegetation on the site. The exact amount of vegetation displaced will depend on building size (which will determine parking lot size) and site design. Most of the trees which will be eliminated are deciduous varieties, primarily maples. Because of their location along the property's edges, the few coniferous trees which exist will not be dramatically affected. 5. Fauna. Direct impacts: No impacts are anticipated as a result of the rezone action. Indirect impacts: Construction of a city hall on the Desimone property will significantly reduce the site's existing wildlife habitat. It is expected that these adverse impacts will be uniform on all types of birds currently using the site, but may completely eliminate use by certain mammals. 6. Noise. Direct impacts :. No impacts are anticipated as a result of the rezone action. Indirect impacts: Construction of city hall will temporarily increase the ambient noise level in the subject area. Heavy equipment could periodically increase noise readings in excess of 90 dba, although the ambient noise level is expected to be considerably less. Upon completion, increased vehicular traffic is expected to raise the ambient noise level above the 60 - 65 dba level which currently exists. It is expected that this new noise level will be around'65 - 75 dba. B. HUMAN ENVIRONMENT 1. Housing and Population. Direct impacts: Rezoning the subject site from R.1 to P -F will effectively eliminate future development of the site to residential use. This could mean that future population of the city may be reduced by 60 - 150 persons. Indirect impacts: The existing housing unit along with its occupant will be displaced as a result of construction of city hall on the site. This one resident will be supplanted by approximately 50 - 75 employees who will work at city hall during daytime hours. 2. Transportation /Circulation. Direct impacts: No impacts to transportation systems are expected as a result of the rezone action. 12 Indirect impacts: Construction of city hall on the Desimone site will increase traffic volumes on all surrounding streets, particularly 65th Avenue South and South 151st Street. It is expected that traffic volumes could increase as much as 50 percent during business hours on these streets. Much of this increase could occur during peak traffic hours. However, the increase in vehicular traffic on 65th Avenue South and South 151st Street is expected to be well within the limits of these streets. The movement of additional vehicles could present safety problems during hours when children are going to and from the elementary school.7 A need for a marked pedestrian crossing may be created as more residents begin to walk to city hall. It is expected that this cros- sing would be across South 151st Street where the entrance to city hall would occur. 3. Public Services. Direct impacts: No impacts to public services or public service levels are expected as a result of the rezone action. 5 Indirect impacts: Centralization of city departments in one complex is expected to have beneficial impacts on public services. Equipment- sharing among departments could reduce redundant expenditures, saving the public money. Centralized city functions would tend to increase coordination and efficiency, with an ultimate reflection in higher public service levels. Locating the police department and court within city hall on the Desimone property would continue the present necessity of transporting law offenders through the residential area.8 According to the police chief, this is an uncomfortable and unnecessary predicament. There may be problems with fire protection of city hall at the Desimone site, particularly if city hall is built of combustible materials (wood construc- tion).9 The problem is one of inadequate water flow requirements at the site, and it is only partly resolved by the addition of sprinklers to the structure. This is due to the fact that the water pressure in the main water line along South 151st Street is approximately 3760 gallons per minute (gpm) while that required for a non - sprinklered building 20,000 square feet in size is 4100 gpm. If sprinklers are added, the necessary water pressure is reduced to 3100 gpm. 4. Utilities. Direct impacts: No impacts to water and sanitary sewer services are expected as a result of the rezone action. 7SEE, Attachment B. 8SEE, Attachment C. 9SEE, Attachment D. 13 Indirect impacts: Water and sanitary sewer utilities are sized for future expan Aon in the area and are capable of handling the requirements of city hall. Increased surface runoff is expected as impervious surfaces are created on the site. If present drainage patterns are maintained, down- stream flooding problems may occur. If this runoff is piped to 65th Avenue south, these downstream problems may be averted. 5. Aesthetics. Direct impacts: No impacts to the aesthetic condition of the subject site are expected as a result of the proposed rezone action. Indirect impacts: Much of the quiet, sylvan character of the Desimone property will be diminished as a result of the construction of city hall and associated parking lots. In essence, much of what the City desires to save (i.e., the "naturalness" of the site) will be diminshed or eliminated by city hall construction. The relationship between city hall and the aesthetic condition of the site is an inverse one: the greater the size of city hall, the lesser the aesthetic condition of the site; and the lesser the size of city hall, the greater the aesthetic condition of the site. In this case, a city hall with 20,000 square feet of floor space has a much less adverse impact on site aesthetics than a 30,000 square foot structure. 6. Land Use. Direct impacts: As a result of rezoning the Desimone site to P -F, it is possible that other rezone requests to allow office or commercial uses will occur for other sites in the same general area. As the composition of the City Council changes in the future, the attitude toward permitting these rezone requests may change also. Indirect impacts: Construction of city hall will tend to have a stronger influence •• on rezone requests for office and commercial uses around city hall. Land use trends in the area may change from multiple - family residential to office and /or commercial use or to mixed office /commercial /and multiple- family residential uses. IV. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED Many of the adverse environmental impacts may be mitigated with a measure of foresight and planning. Increased surface runoff, generated by the addition of impervious sur- faces, could be diverted to the 65th Avenue storm sewer system, thereby averting any downstream flooding problems associated with the present drainage pattern. A well- architectured building might help to enhance site aesthetics. Fitting buildings and parking spaces into the "lay of the land" would limit the necessity of extensive excavation and filling while maintaining much of the site's existing vegetation. Generous landscaping after the structure is built would also help to retain the syl- van character and natural charm of the property. 10SEE, Attachment A. 14 V. UNAVOIDABLE. ADVERSE ENVIRONMENTAL IMPACTS A portion of the site's vegetation must be removed to provide room for building and parking spaces. Removal of vegetation will mean reduction of wildlife habitat, possibly expelling some species permanently. Land use trends in the Desimone vicinity may change somewhat from multiple - family residential to office and /or commercial uses. Also, law offenders will be trans- ported through the residential area in order to be brought to the police department. VI. ALTERNATIVES TO THE PROPOSAL Although in this case the construction of city hall is not the primary action but a secondary one based upon the rezoning of the property to P -F, the environmental impacts are more tangible and significant than those of rezoning the property. Therefore, this section will consider the alternatives to locating city hall on the Desimone site in lieu of addressing alternatives to the proposed rezone. A. DO NOTHING The "Do Nothing" alternative would entail maintaining the existing city hall facilities on the Tukwila_.I-Iill_ and on Southcenter Boulevard in an acceptable condition for an indefinite period of time. Expansion to accommodate new personnel or increased space needs would be accomplished through piecemeal additions to existing structures. Maintenance of facilities would be based on a long -term rather than a short -term basis. The primary . advantage of this alternative is its initial financial savings to the community, for both sites and all structures are presently owned outright by the City. The environmental impact of this alternative would be low, amounting to much the same condition as that which prevails at the present time. Disadvantages are numerous and wide - ranging. Maintenance and expansion costs would be great considering the age and condition of some of the structures. "Over- crowding" of employees would be perpetuated and working conditions would be poor. The present problem of the public trying to find city hall (or the "right" city hall) would be perpetuated also. In addition, this alternative would continue the present policy of equipment duplication, increasing costs and decreasing service levels. B. CITY HALL ON SOUTHCENTER BOULEVARD (ANNEX) SITE This alternative would include the placement of all city departments in one or a series of buildings on the existing city -owned property at 6230 Southcenter Boule- vard. The present structure at this site would be razed. A conceptual site plan of this alternative, as drawn by Mithun Associates, is shown in Figure 2. Access would be from 62nd Avenue South with buildings (20,000 square feet floor space) generally facing south. 15 CM OF I iiVEILit MAP 2. ALTERNATIVE SITES FOR TUKWILA CITY HALL* Alternative #1 (maintain existing city structures at both locations) 16 Proposed location of city hall (and site of rezone to P -F) Alternative #2 Alternative #3 - - -- EPO\11TNOFC197SD OR NHS FIGURE 2. CONCEPTUAL SITE PLAN FOR CITY HALL: ANNEX SITE NOTE: Like the sketch for the Desimone site, this architect's rendering is intended only to show the relationships between site and building /parking space. t Drawn by Mithun Associates FIGURE 3, TUKWILA CITY HALL SITE ANALYSIS THE MITHUN ASSOCIATES: ARCHITECT Rating Scale: 1. Very poor 2. Poor 3. Average 4. Good. 5. Very good W 5-- W 4-) 01 4-) N .� N N 4-) U N • N £ Z3 r- +> 1.0 r - • - O 07 N N CRITERIA FOR EVALUATION 2 5 a. Compatibility of proposed use with surrounding zoning 3 3 b. Accessibility by constituancy 3 5 c. Prominence of location (Identity) 3 5 d. Appropriateness and efficiency of site size for proposed use 4 2 e. Adequacy and efficiency of site for future expansion 3 4 f. Vehicular accessibility 4 4 g. Accessibility of utilities 3 4 h. Accessibility for fire protection (Site and buildings) 3 5 i. Solar orientation /Energy conservation 2 . 5 j. View 4 2 k. a Indigenous large tree growth 3 3 1.' Suitability of soil and topography for construction 3 4 m. Minimum environmental impact of development (Retention of natural site) 3 5 n. Minimum site cost 3 4 o. Minimum development costs and constraints 3 2 p.. Minimum impact from freeway and air traffic noise 3 4 "q. Centrality for police functions 5 3 r. Minimum disruption of existing city functions The primary advantage to this alternative is that, unlike the Desimone property, this site would not have to be purchased before construction could begin. Implementation of this alternative could have a strong influence toward the estab- lishment of an office district along Southcenter Boulevard. (This area presently has a proclivity toward office use and this alternative could cement it.) City hall orf this site would be visible from the business sector of the town, but would be identified with the hill. Accessibility is facile, and traffic need not pass through residential areas in order to reach the site. Fire protection is expected to be better at this site than at the Desimone property. Police need not escort law offenders from the business /industrial areas through the residen- tial area in order to bring them to city hall. Impacts to the physical environ- ment as.a result of this alternative would be insignificant due to the cleared and developed condition of the property. Probably the most significant disadvantage to this alternative is the site's size (2.4 acres) which, by itself, may not allow for future expansion of city hall. Vacant properties exist to the west and to the north, but presently none of this land is owned by the City. In June 1976, Mithun Associates evaluated both the Desimone and Southcenter Boulevard (Annex) sites for their suitability for city hall. Their comparison of the two sites is shown in Figure 3. C. CITY HALL WEST OF I -5 FREEWAY (SITE #5) This alternative would entail purchasing approximately 6.9 acres located south of Southcenter Boulevard near 53rd Avenue South and erecting city hall. (This site was referred to as Site #5 in the Planning Commission's report on city hall location sites.) The primary advantage of building city hall on this site would be its location with respect to the future expansion of the City, if indeed the City would annex westward. At the present time, however, the site would not be central to the City of Tukwila. This site is large enough for addition of community center. Presently there are several ownerships in this area and acquiring the site may become a complex, tedious problem. Another disadvantage is the expected cost of the property which could be in excess of $600,000. Accessibility to this site varies depending on origin of trip. The noise levels at this site may also cause city hall construction to be more expensive in order to insulate against such. Development of community center on this site would not alleviate need for community park. VII. RELATIONSHIP BETWEEN LOCAL SHORT -TERM USES OF MAN'S ENVIRON- MENT AND MAINTENANCE AND ENHANCEMENT OF LONG -TERM PRODUCTIVITY Improvements to 65th Avenue and 151st Street, land use trends and development in the general vicinity, as well as the existing Comprehensive Plan have collec- tively committed the Desimone site to uses higher than single- family residential. To preserve the Desimone site in its current condition on a short -term basis will have no significant effect on its long -term productivity from an environmental standpoint.. 19 To preserve the Desimone site as an open space on a long -term basis would require public purchase of the property. From an environmental standpoint, it is doubtful whether the environmental gains of this course of action would justify such a decision. The proposed use of the property (i.e., city hall) would still allow a portion of the site to remain in its natural state. VIII. IRREVERSIBLE AND IRRETRIEVABLE COMMITMENTS OF RESOURCES As a result of the construciton of city hall on the Desimone site, the greater portion of the existing forest environment will be permanently lost to buildings and parking space. The construction and maintenance of the improvements on the site will require a commitment of natural and human resources. This development will require a long- term commitment of energy resources, water resources, and waste treatment . facili- ties. In addition to the monetary commitment required to construct a city hall, the City of Tukwila will also lose approximately five acres of land from its property tax rolls. 20 w w 10 w w er 2 PLO UC WORKEI CEPA TM ENT EBE3 © athc®rater _ ®ug ward Tukwila, WeishOnnton 9 037 tele 'hone C ; D 84 o 21177 July 21, 1976 Ati-eicAmmeAt �c MEMORANDUM To: Fred Satterstrom, Planning Department From: Dick Williams, Public Works Department Subject: Environmental Impact Statement on City Hall Site Per your request of 20 July 1976, I have researched our records and will attempt to reply to your questions. Site I - Desimone Property 1. Water & sanitary services are available to Site I. 2. Lines are sized for future expansion in the area. 3. a. Sanitary sewer - 8" stub to property line from 65th Ave. So. b. Water - Main line 10 ", stubs to property line from 65th Ave. So. and 151st Street; 4. a. Sanitary sewer - Inside right -of -way. b. Water - Inside right -of -way. 5. No problems with sanitary sewer or water services. 6`.''rresent run -off flows in a Southwesterly direction off the property and dissipates. Future run-off generated . by construction improvements should be piped to 65th 'Ave. So. 7. Any increase in run -off that follows existing pattern could cause problems downstream from site. See paragraph 6. U Site II - 6230 Southcenter Blvd. Ui 1. Water and sanitary sewer are available to Site II. 2. Lines are sized for future development. f .. fi.'!""�'o"' °�,•:, r.r y,, --^. ti �a't ; ;'Kva,; a;L.�' - �+c�':�,`� .x ' ,wit c�•t'•^.."i:t�,.ia'�:+w�'�`"a �. �..:i:. .:kir ''it'i %�d.� c �a r 13.. : 7 *� % •, c w 17 MEI Memorandum - Fred Satterstrom July 21, 1976 Page two 3. a. Sanitary sewer located on North side of Southcenter Blvd. . Water - See attached sheet. 4. a. Sanitary sewer - Inside right -of -way. b. Water - Inside right -of -way. 5. No problems with sanitary sewer or water services. 6. Only collection point is at Southwest corner of property and all run -off ends up on W.S.H.D. property, I -405. 7. No problems providing run -off remains in same pattern as existing. I hope this information answers your questions. If not, don't hesitate to holler. RKW /dp Dick Williams, Engineering Technician Attachment '3"'.3. 7'S 770'iff„ 9N07 r, S� ':7N /S8'J 7�, a71 S. 'O •O, i, /cam /Y/ Y:J., 8.. • /'C»/i/ .9/1'YSSQ»<7..r67if .V ' ///. % :7 ,, sJ.7dS.rd.9OXAV/ S cY.j- 77c 01„1,1 9/V0 7 , 0-9 ' /V/..<" t".9 7.7Jt$ 0 0„ /Y/ / J„ .9 2'ON,DN /SSOd'J .CLOIImo. /N 7'7//x' i'O.,/a' "OP ,8 GVX rif ,.9 -/ r'An('7-7''%1:9 „8 -/ 73_ _7.1 „..9x '"pa _/ ttyc �rOdv� .9J /�ld_gssp %F aye 'O/1/.77,E7006r8- /. .12.7411/0.7 / '0/t/ No /-1 ,0' .2A/ V 7 S0N /..i.0 /..,1 ;drop r2„ 8, QS-.9' 1 'dfr' /V/I4 0.Y/1'1-7 N O /..e 6'.00 7 _C, 4_N00/143:6 b ..? 9 Ol .,tea' / " 4 76'9,, /. z • *1, _1. �-, . . i• j \. 'c'1�; %..7,5'0 57;ec7, .9 -/ MINI -MEMO . Fred Satterstrom TO Planning Department Steven M. Hall, P.E. Public Works Director Department of Public Works City of Tukwila 6230 Southcenter Blvd., Tukwila, Washington 98067 SUBJECT E.I.S. - City Hall Site IDATE 4 August 1976 .In reference to your memo of 20 July 1976, the Public Works Department has taken. count on So. 151st Street and will be receiving processed data within the next few days. As to Southcenter Blvd., we will be setting counters at this location this week and will have the data back in processed form in approximately two weeks. As far as your second question on additional volume of traffic to or from City Hall, the impact would be minimal because of the current need for physical communication between City Hall and the Annex, and the present location of the Police Department. The impact of the additional traffic generated through the City Annex would be approxi- mately 10 - 30 cars akabalk per day. Therefore, in my opinion, the traffic impact xg5dRA would be fairly minimal. However, I do feel that the presence of Police vehicles operating through a major population center (Maple Crest Apartments, Canyon Estates) and the Tukwila Elementary School pose safety problems during the hours that children are going to and coming from school. DATE RETAIN WHITE COPY FOR OUR FILE. SEND ❑ YELLOW, ❑ PINK COPY TO CUSTOMER. NO REPLY NECESSARY ❑ PLEASE REPLY ❑ TELEPHONE ❑ RETURN ENCLOSED MEMO WITH REPLY. July 29, 1976 TO: Fred Satterstrom FROM: John A. Sheets, Chief of Police SUBJECT: Environmental Impact Statement on City Hall Site Att4cie C Pursuant to your request for Police Department input on the location of the Police Department facility in the new City Hall, we offer the following comments: 1. Police facility located in the residential area will sub- stantially increase vehicle or traffic in that area. Some of that traffic will be made up of criminals and motor vehicle traffic Ordinance violators who are appearing or making arrangements to appear in Court. Other vehicle traffic will also increase in the area since a variety of people will need to come to Police Station for a variety of licenses, plan reviews, etc. 2. Police vehicles responding to an emergency from the station will be required to travel through a residential area. This would not be an unusual occurrance since the officers assigned to the Detective Division often respond from the station to the scene of a major crime. 3. If the Police Department is located in the residential area, it will also mean that we will be exposing that area to known criminals who have been arrested for other crimes, usually in the industrial /commercial area. We would, in effect, be giving those persons a guided tour of our residential area which they may use in the future, for criminal escapades in our City. 4. Any facility located in the residential area will also increase the difficulty that members of the general public and other law enforcement agencies will have in locating the facility. 5. It is our opinion that the Police Department should be located in the commercial /industrial area since it would have the least amount of impact on the environment in that area. For the above stated reasons, it appears to us that it would be logical to place the police facility away from the residential areas of our City. TO: F'- OM: SUBJECT: DATE: PEKE E ITV or TLJ , ,; IL FORE DEPARTMENT FRED SATTERSTROM HUBERT H. CRAY LEY, FIRE CHIEF ENVIROMENTAL IMPACT STATEMENT ON CITY HALL SITES JULY 27, 1976 A 4c hvie ' D PER YOUR REQUEST OF 21 JULY 1976 I AM FORWARDING RESULTS OF THE WATER FLOW TESTS AND CALCULATIONS FOR FIRE FLOWS ON ESTIMATED STRUCTURES, ALSO, I AM TAKING THE LIBERTY OF ENCLOSING THE REPORT TO THE MAYOR IN REGARDS TO THE SAME SUBJECT, DATED 13 JULY 1976, AS YOU WILL NOTE THERE ARE CERTAIN QUESTIONS IN REGARDS TO THE AMOUNT OF WATER AVAILABLE, THAT SHOULD BE ADDRESSED IN BOTH LOCATIONS, HUBERT H. CRAWLEY FIRE CHIEF 144.41 1174.9 Jo* °go? 1MllL[ AJJ3. co,„,cis3).A evoTod REMARKS: 7u.lr /.45/ - WASHINGTON SURVEYING AND RATING BUREAU -- SEATTLE, WASH. , 6 C- j19kr") 0 A X71 i)/i)e % / d7 n LOCATION Static Residual 6 1 / c P ) .5' (p3oc 3L,rt )S Dia. Out- lets Location Gauge No. Velocity Pressure Gallons Corr. OO um�.s�.■, ■i a...„` .........i'.C..s -'ii.i - -'.i .'ii �C.— .-....mu.0 :iti:f17�i aaii■I. :r. :. :..rr ... :.`i:i :...CS-Iii:i:i-C•.0 .....r :. E CIIIiIllh::::::: ' aaaa am.m.■C.CCC CCC::a:Q C- =i:y.:C.:. -nen a' .: aEiY:' �'iCaaC'�'Di■'�;;ECa'+'a�I= ...a.m. aa soma ,aC :Ca aaC C- Cem MMMMM OaACaaaaa�=Mos =� =C�anCamms ::a'.aa a- - ogr a:a::a sjE SE" ratilawrCEEC===am aa:ma i aaa. a aaeaaaafasaaaE:r:= rruEma ma =_-- = - - �: 1 Np HE -_ --. . ` - .. CI•. —�• s- g�N.. pa:.m: -a.: -- -- I. - = -- :cm aura - - =. z51 -..1 14.40 TO. 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K 9 L FIRE DEPARTMENT TO: MAYOR ED BAUCH FROM: .HUBERT H. CRAWLEY FIRE CHIEF SUBJECT: WATER FLOW FOR NEW CITY HALL DATE: JULY 13, 1976 PER OUR CONSERVATION DURING STAFF MEETING OF JULY 12, ENCLOSED YOU WILL FIND THE RECOMMENDATION FOR FIRE WATER FLOW FOR THE PROPOSED CITY HALL SITE. THIS CHART WAS ARRIVED AT BY FORMULA USED BY THE INSURANCE SERVICE OFFICE. AS YOU WILL NOTE SQUARE FOOTAGE AND TYPE OF CONSTRUCTION EFFECT. THE AMOUNT OF WATER REQUIRED. IT IS MY HOPE THAT THE ARCHITECT RETAINED BY. THE CITY IS ALSO CONSIDERING FIRE SPRINKLERS FOR THE BUILDING. THE CITY HAS SUFFERED ONE LOSS FROM FIRE AND THE INVESTMENT REQUIRED FOR THE INSTALLATION OF SPRINKLERS WOULD BE SMALL CONSIDERING THE LOSS TO THE CITY IN THE EVENT OF A FIRE. MOST. ARCHITECTS WILL RESIST THE INSTALLATION OF SPRINKLERS, BECAUSE OF THE DISTRACTION FROM THE APPEARANCE., IF THE BUILDING IS IN EXCESS OF 20,000 SQUARE FEET CITY ORDINANCES WILL MANDATE SPRINKLERS, BUT MY CONCERN IS WHEN THE BUILDING, AND IF THE BUILDING, IS UNDER 20,000 SQUARE FEET. BASIS OF FORMULA 20,000 SQUARE FEET (NON - SPRINKLERED) 20,000 SQUARE FEET ( SPRINKLERED) 30,000 SQUARE FEET CITY OF TUKWILA PROPOSED CITY HALL BUILDING FIRE FLOW REQUIREMENTS FOR FIRE SERVICE TYPE V (COMBUSTIBLE) TYPE III -N (ORDINARY TYPE III -1 HR. F.RESTIVE 4100 G P M 2800 G P M 1800 G P M 3100 G P M 2100 G P M 1350 G P M (NON - SPRINKLERED) 4950 G P M. 30,000 SQUARE FEET (SPRINKLERED) 3700 G P M 3300 G P M 2100 G P M 2500 G P M 1600 G P M ATTACHMENT .E The following maps are site analyses taken from the Planning Commission's 1973 report on alter- native sites for the city hall complex. LC) (0 \\\V PO' 11 t.5 piT UA • , : '\ o :. SITE #: Five LOCATION: South of Southcenter Boulevard and West of 53rd Ave. AREA: 6.9 acres, 300,560 sq..ft. ZONING: C -2 Local Retail. TOPOGRAPHY: Gently sloping MAIN ACCESS: 53rd. Ave. S. ADJACENT USES: Public Rights -of -way and commercially zoned property. UTILITIES: Existing sewer, water and utilities are adequate, however approximately $25,000 would be required for street improvements. SITE PREPARATION: Fill not required PROPERTY COST:$2.15 /sq.ft., $646,000 TOTAL COST: PROPERTY SITE PREPARATION UTILITIES $646,000 $ 25,000 $671,000 - $2.23 /sq.ft. a, o LtilLt ''x -� e zip 25a:5 I 40 125 t. 171.----326---- i •v i .f6 • isa G W J Tukwila 28.0 1 • - l 1507 1 ;'_ t • 1 o t . .100 i ti rED • M • /ACE`s /' • ii. ii /c sOUTHcEN ''��� ......... i E R STATE --- • • -SITE 0: Six LOCATION: North of Southcenter Boulevard and east of 62nd Ave. S AREA: 6.2 acres, 271,800 sq.ft. ZONING: R -M -H, High Density Multi- Family Residential TOPOGRAPHY: Moderately sloping to.the Northeast. MAIN ACCESS: 62nd Ave, S. and Southcenter Boulevard. ADJACENT USES: Multi- Family Residentially and Commercially zoned property. UTILITIES: -Sanitary sever, water and power are adequate, street and storm sewer improvements to be financed by outside sources entirely. SITE PREPARATION: Fill not required PROPERTY COST: $1.58 /sq.ft., $429,444 TOTAL COST: PROPERTY SITE PREPARATION UTILITIES tra4p -eo ccess -E f' E -- f�i G F i�- frF 1t�Y 4 75.75 r-- :TUKWILA PARKWAY $429,444 $429,444 — $1.58 /sq.ft. 1 1 _ 1- - - -- 1 1 sf h'7 21 VAC. T • tii • •• : !-. -I— : —r .. ' 33 ; 32 � 31 130 ; 19 1 `' 4 71819 I - 5i 11112113 .z.zc.hNSl0nf f 1 ekrgr4 s SITE #: Three LOCATION: South of S. 151st St. and west of 65th Ave S. AREA: 12.3 acres,. 535,790 sq.ft. ZONING: R -1 -12.0, Single Family Residential (Multi -Fam. Residential . on Compr. Plan) - TOPOGRAPHY: Moderately sloping with a few steeper areas, varies from 132' to 192' MAIN ACCESS: 65th Ave. S. and S. 151st St. ADJACENT USES: Single family residential, undeveloped and multi- family property UTILITIES: Approximately $70,000 would be required for extensions to existing utilities. SITE PREPARATION: Fill not required PROPERTY COST: Approx. $0.75 /sq.ft., $401,840 TOTAL COST: PROPERTY $401,840 SITE PREPARATION 70,000 UTILITIES $471,840 $0.88 /sq.ft. • • PROPOSED REZONE OF DESIMONE PROPERTY TO P -F PTO ALLOW CITY HALL CONSTRUCTION) NATURE OF THIS REPORT: Final Environmental Impact Statement TYPE OF REQUEST: Change of Zoning (R.1 -12.0 to P -F) SPONSOR: City of Tukwila LEAD AGENCY: City of Tukwila NOTE: This Environmental Impact Statement has been prepared for the change in zoning of the Desimone site from R.1 to P -F in order to allow city hall' to be built on the property. Because of the interrelatedness of these two proposals (the rezone and city hall construction), the environmental impacts of both actions are collectively discussed in this EIS. INTRODUCTION A. ACTION /ACTION SPONSOR This final environmental impact statement has been prepared for the change in zoning of a 5 -acre parcel of land located at the southwest intersection of 65th Avenue South and South 151st Street, commonly known as the Desimone property, from R.1 -12.0 (Single - family Residential) to P -F (Public Facility). The P -F zoning classification would allow the governmental headquarters of the City of Tukwila to be constructed on the site. The sponsor of the zoning change action is the City of Tukwila. B. LEAD AGENCY The lead agency for this action is the City of Tukwila. The Office of Community Development is responsible for the preparation of the EIS and compliance with SEPA regulations. The Responsible Official is Kjell Stoknes, Director of the Office of Community Development. Contact Person: Fred N. Satterstrom, Associate Planner Office of Community Development 6230 Southcenter Boulevard Tukwila, Washington 98188 (206) 242 -2177 C. PRINCIPAL CONTRIBUTORS TO FINAL EIS Tom Emrich — Architect, Mithun Associates Steve Hall — City of Tukwila, Public Works Director; circulation information Dick Williams — City of Tukwila, Engineer; utility information, traffic counts John Sheets — City of Tukwila, Police Department; impacts on police protection Hubert Crawley — City of Tukwila, Fire Department; fire safety information Carl Stixrood — City of Tukwila, Landscape Architect; biological /botanical input D. OTHER LICENSES /PERMITS REQUIRED Prior to city hall construction, a grading and fill permit and building permit are required. • • E. LOCATION OF EIS BACKGROUND DATA Much of the background information to this final EIS can be found in the docu- ment "Data Inventory: Tukwila Planning Area — 1975." This document, along with other pertinent maps, records, and information can be reviewed at the Office of Community Development, 6230 Southcenter Boulevard in. Tukwila. F. COST TO PUBLIC OF FINAL EIS $0.75 G. DATE OF ISSUE OF FINAL EIS September 15, 1976 ii TABLE OF CONTENTS Page INTRODUCTION 1 DISTRIBUTION LIST 1 SUMMARY 2 I. DESCRIPTION OF THE ACTION 4 II. EXISTING ENVIRONMENTAL CONDITIONS 7 III. ENVIRONMENTAL IMPACT OF THE PROPOSAL 11 IV. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED 14 V. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS 15 VI. ALTERNATIVES TO THE PROPOSAL 15 VII. RELATIONSHIP BETWEEN LOCAL SHORT -TERM USES OF MAN'S 19 ENVIRONMENT AND MAINTENANCE AND ENHANCEMENT OF LONG- TERM PRODUCTIVITY VIII. IRREVERSIBLE AND IRRETRIEVABLE COMMITMENTS OF 20 RESOURCES ATTACHMENTS A 21 B 24 C 25 D 26 E 32 COMMENTS TO DRAFT EIS 36 iii • • DISTRIBUTION LIST OFFICE OF THE GOVERNOR Legislative Building Olympia, Washington 98504 DENNIS LUNDBLAD, HEAD ENVIRONMENTAL REVIEW Department of Ecology Olympia, Washington 98504 BRIAN BEAM, ENVIRONMENTAL PLANNING DIVISION Puget Sound Council of Governments Grand Central on the Park Seattle, Washington 98104 JAMES P. HARRIS, PLANNING DIRECTOR Kent Planning Agency P.O. Box 310, City Hall Kent, Washington 98031 GORDON ERICKSEN, PLANNING DIRECTOR Renton Planning Department 200 Mill Avenue South Renton, Washington 98055 OMER MITHUN Mithun Associates - Architects 2000 - 112th Avenue NE Bellevue, Washington 98004 • • SUMMARY A. THE PROPOSAL This final Environmental Impact Statement has been prepared for a change of land use classification from Single - family Residential (R.1- 12.0). to Public Facility (P -F) on a 4.8 -acre site located at the intersection of 65th Avenue South and South 151st Street and commonly referred to as the Desimone property. The Sponsor of the proposal is the City of Tukwila. The reclassification of land use from R.1 to P -F will allow the construction of a city hall on the site. The objective of the land use reclassification is to obtain zoning for the property which properly permits the construction of governmental offices. The City of Tukwila has informally studied the site for its suitability for this purpose and has shown a definite public interest in constructing the city's governmental headquarters on the property. B. DIRECT AND INDIRECT IMPACTS 1. Impacts to Physical Environment. No direct physical impacts are anticipated as a result of the proposed zone change from R.1 to P -F. As a result of the construction of a city hall, several physical impacts are anticipated. City hall construction will necessitate the alteration of topo- graphy on a portion of the site; the magnitude of which is dependent on the size of the facility. Some excavation and some filling will be necessary. Existing tree cover will be reduced in proportion to facility size. A reduc- tion in wildlife habitat will accompany the partial removal of vegetation. The rate of storm water runoff is expected to increase while runoff water quality is expected to decrease. Noise and air pollution will increase insignificantly as a result of city hall construction. 2. Impacts to Human Environment. The change in zoning of the subject site from R.1 to P -F is expected to have little, if any, direct impacts on the human environment. Several impacts are anticipated as a result of the indirect action of locating city hall on the site. Resident population on the site will be displaced by 50 - 75 employees who will work in city hall. Traffic volumes are expected to increase on 65th Avenue South and South 151st Street, reducing safety on the streets and increasing noise. The area may experience a proclivity toward other similar office and /or commercial uses, which would change the existing character of the area. C. ALTERNATIVES Three alternatives are considered in detail in the final EIS. 2 The first alternative is "No Action," which entrails maintaining the existing, scattered city offices. Under this alternative, the maintenance and upkeep costs are expected to be high since the existing structures must be brought up to standards in order to lengthen their lifespan. Employee "overcrowding" is expected under this alternative as the city grows and its services expand. Overcrowding will cause a need for piece -meal expansion of existing structures creating, in turn, another cost of maintaining these structures. This alterna- tive maintains the present inconvenience which the public encounters in finding the "right" city hall, and also adds to the duplication of facilities and equipment. Alternative two consists of building the city's head offices on what is commonly referred to as the Annex site at 6230 Southcenter Boulevard. This site is already owned by the City of Tukwila and would not require rezoning to allow for city hall. Under this alternative, the benefits of consolidation which come about as a result of locating all city offices in the same building (or on the same site) are identi- cal to those of the proposed action. Alternative three entails purchasing land west of I -5 at 53rd Avenue and South - center Boulevard and erecting city hall. This location would be central to the City if it expanded westward but site costs and city hall construction costs would be high. D. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED Site and building design and layout can at least keep adverse environmental impacts to a minimum. By conforming building design and parking layout to the topographical and botanical conditions of the site, disruptions to the topography, vegetation, and wildlife can be held to a minimum. E. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS The primary unavoidable impacts include the partial, inextricable loss of vege- tation and the reduction :in wildlife habitat caused by buildings and parking space. In addition, traffic volumes on adjoining streets will swell during business hours, and trends in land use in the vicinity may change to office and /or commercial types. 3 • • I. DESCRIPTION OF THE ACTION A. THE PROPOSAL The City of Tukwila is proposing to rezone a 4.8 -acre wooded lot, commonly referred.to as the Desimone property, from R.1 -12.0 to P -F. The property is located at the southwest corner of the intersection of South 151st Street and 65th Avenue South. The purpose of the rezone request is to allow a city hall to be constructed on the site. For several years, the City has studied various locations for a new city hall complex, and considerable interest has been shown in the subject site. As of the date of the final EIS, the Desimone property had not been purchased by the City of Tukwila. However, an appraisal has been completed which values the site at approximately $105,000. Trapezoidal in configuration, the subject site is situated in the southwest corner of the intersection of 65th Avenue South and South 151st Street (SEE, Map 1.) at the southern crest of the Tukwila Hill. One single - family home presently occupies a portion of the northwest corner of the lot and a small clearing is situated in the center, but the majority of the 4.8 -acre parcel is wooded. Figure 1. depicts a conceptualized building and parking layout for the Desimone property as drawn by the architects for the project, Mithun Associates of Bellevue, Washington. Total floor area of the city hall structure depicted in Figure 1. is 20,000 square feet. B. MAJOR ASPECTS OF THE PROPOSAL The City of Tukwila proposes to rezone the Desimone property from R.1 to P -F and to construct a city hall on the site. Construction of city hall would entail clearing, grading, and filling areas of the site for building and parking spaces. The antici- pated floor area dimension of city hall is approximately 20,000 square feet. C. LAND USE PLANS AND ZONING REGULATIONS According to the existing Tukwila Comprehensive Plan drafted in 1962 by John Graham Company and revised in 1967, the Desimone property is located in an area designated "Multiple Family Residential ". It should be noted that the northern boundary of the subject site (or South 151st Street) marks the division between multiple and single - family residential areas on the Land Use Map. Although not yet officially adopted, the new Comprehensive Plan Land Use Map (as proposed by citizen review committees) designates the subject site for "medium - density" residential use. Medium- density is defined as between 6 - 17 units per gross acre and is. characterized by duplexes, triplexes, and fourplexes. This class- ification is subject to change as a result of public hearings on the Land Use Maps. 4 CITY OF TUKWILA MAP 1. VICINITY MAP OF PROPOSED REZONE (DESIMONE PROPERTY) Site of proposed rezone to P -F and proposed city hall for Tukwila. 5 • , Drawn • by`-`Mithmn ASSOc ates•=,: FIGURE 1. CONCEPTUAL SITE PLAN FOR CITY HALL: •'DESIMONE SITE NOTE: The figure illustrated above is only an architect's sketch of what city hall might look like from the air on the Desimone property; it is not a hard and fast layout plan. It is included here so that the reader can get a feel for the relationships which exist between building, parking space, and site on the Desimone property. ,v s.rc- 20, orsp A's14) Presently the subject site is zoned R.1 -12.0, Single - family residential. Residential lots in this zone must have an area of 12,000 square feet or more. Adjacent properties to the south, west, and north are zoned for single - family residential use also. On the east, however, properties are zoned (and used) for multiple - family residential use. The requested zoning classification, P -F (Public Facility), would restrict use of the subject site to those uses specified in the Tukwila zoning ordinance, TMC 18.44.020. Generally these uses are schools, hospitals, educational institutions, libraries, governmental office buildings, parks, playgrounds, and public meeting halls and auditoriums. Other uses may be permitted in the P -F zone district only after issuance of a use permit authorized by two - thirds vote of the City Council, (SEE, TMC 18.44.030). Construction of a city hall qualifies as a "governmental office building" and is allowed outright in this zone. D. HISTORICAL BACKGROUND OF PROPOSED ACTION The need for a modern, centralized city hall structure has long been recognized by the City of Tukwila. In 1973 a study was done by the Planning Commission which analyzed and made recommendations on 10 sites for city hall. Their study was called "City Hall Complex Location Analysis ", and as a result of the study, three sites were recommended to the city council . for the location of city hall. These sites were, in order of preference, Site #10 (VanWoerden property), Site #6 (City Hall Annex property) and Site #9 (City Light property). Site #6 was designated as second choice only with the provision that additional land be obtained to the east to augment the 2.4 -acre parcel. Since the initial study by the Planning Commission, considerable time has been spent by the City Council in discussion of a city hall site. Early in 1976, a City Hall Construction Flow Chart was unofficially adopted by the Council. Selection of a site for city hall was designated as a first step on the Flow Chart. On 7 June 1976, the City Council undertook this step and passed a motion establishing the Desimone property as the city hall site. The proposed action of rezoning the Desimone property from R.1 to P -F is necessary to allow the secondary action,:that of building city hall. II. EXISTING ENVIRONMENTAL CONDITIONS A. PHYSICAL ENVIR0NMENT1 1. Earth. (a) Geology and Soils: A very thin layer of soil overlies bedrock on most of the Desimone site. Bedrock geology is composed of sedimentary rocks laid down inpre- glacial times and basal- tic -type rocks which have intruded into these deposits. The thin soils above are comprised largely of till left behind by great glaciers which advanced over the region several times and then melted back again 14,000 to 100,000 years ago. 1Much of the information concerning the physical aspects of the environment on the Desi- mone site has been taken from the document entitled "Data Inventory: Tukwila Planning Area," 1975. 7 • The primary geologic characteristic of bedrock is its stability. Bedrock provides excellent foundation stability for heavy structues (as city hall would be), stands well under seismic disturbance, and maintains good slope stability. However, sedimentary and basaltic -type rocks are difficult to excavate and tend to inhibit large -scale alterations of the natural land - form. (b) Topography: The subject site lies on the southern crest of the Tukwila Hill. Elevation on the site reaches to approximately 186 feet in the northeastern corner of the property. The lowest elevation is about 140 feet in the southwestern corner. A U- shaped ridge, with two north -south axes running along the east and west sides of the property and an east -west axis running along the north property line, is discernible on the site. The east and west sips of this ridge rise rapidly while the slope inside the "U" is more gradual. A nearly level piece of ground, approximately one to one- and -a -half acres in size, is located within this "U" on the eastern half of the site. A small ravine is located on the western edge of the property. A partial fill for a once - contemplated extension of 62nd Avenue South juts into the ravine about 150 to 200 feet. The fill extension is now densely overgrown and hardly discernible without walking the property. 2. Air. According to the Puget Sound Air Pollution Control Agency, air quality in the Tukwila area is marginal. Concentrations of suspended particulates are cur- rently increasing and particle fall out is also considered high. Air quality conditions reach their lowest levels during June - September, when precipita -: tion and winds are lightest. 3. Water. Because of the bedrock which underlies the thin-.surface soils, percolation of water into subsurface strata is probably minimal except in places where the bedrock is severely broken up or fissured. Consequently, much of the precipitation which falls on the property is turned directly into surface runoff..during the rainy season. Due to the slope of the property, drainage on the site.;is predominantly to the south. Surface runoff collects in two ill- defined ravines and flows overland into a small, marshy basin just south of the property forming a marsh or pond during much of the year. A poorly- drained marsh or swamp exists along the western edge of the property where the ridge plunges into a small ravine. 2As of the date of the pre -draft EIS, no survey had been completed for the Desimone property. Information concerning the "lay of the land" is the result of an on -site field investigation by staff and an analysis of Walker F, Associates topographic maps. 8 4. Flora.3 The Desimone property is heavily forested with a second - growth canopy of coniferous and deciduous trees, the latter vastly outnumbering the former. One huge western red cedar, which stands in a low area along the property's western edge, may be the only "old growth" tree on the site. The predominant specie found on the property is the broadleaf maple. These maples are usually tall, mature, and widespreading. Other deciduous varieties include red alder and willow, and lesser numbers of black cottonwood, wild cherry, and pacific dogwood. Coniferous varieties are found mostly in the southwestern portion of the site and include scattered stands of tall Douglas Firs, western hemlock, and western red cedar. Understory vegetation is dense and comprised largely of hazelnut, vine maple, pacific elderberry, and indian plum. Wild blackberries, huckleberries, and oregon grape are scattered about the property, and various ferns mat the damp, poorly- drained areas. A clearing exists on the eastern half of the property in which wild and domestic grass species abound. 5. Fauna. The forested environment of the Desimone property provides forage and shelter for a variety of birds and mannals. Rabbit, skunk, weasel, squirrel, and possibly raccoon are expected to inhabit the site. Although no on -site bird observations /counts have been made, it is expected that robin, sparrow, starling, crow, blackbird, and bluejay are the most common species. 6. Noise. The ambient noise level (without vehicular traffic) on the Desimone site is approximately 60 - 65 dba.4 Vehicular traffic passing by momentarily measures between 70 - 90 dba, depending on vehicle type and location of noise measure- ment. Generally, noise originating from traffic moving uphill on 65th Avenue South is louder than traffic moving along South 151st Street which is level. 7. Natural Resources. The forest on the Desimone site represents a wood and pulp resource, although the importance of this site to the forest products-industry is negligible. Also, the basaltic -type rocks found on the site represent a potential quarry rock resource although the actual quality or grade of such rock has not been determined. 3Information concerning vegetation was gathered during an on -site investigation of the Desimone property, 16 July 1976. 4Noise measurements taken on Desimone site, 30 July 1976, by Staff member of Office of Community Development. 9 • B. HUMAN ENVIRONMENT 1. Population and Housing. There is one housing unit on the Desimone site which is occupied by one person. The housing unit is a single - family home, approximately 25 years old, and in good condition. 2. Transportation /Circulation. The Desimone site is located along an arterial road, improved with U.A.B. funds in 1971, which traverses the Tukwila Hill from Southcenter Boulevard to Interurban Avenue. Along the east side of the property this arterial is called 65th Avenue South, on the north side it is South 151st Street. The cross section of this arterial is the same throughout: two driving lanes, two parking lanes, sidewalks (both sides), curb and gutter. Current traffic volumes on 65th Avenue South and South 151st Street are light. The average daily traffic is approximately 1265 vehicles, with peaks 5 of about 75 -85 vehicles per-hour at 11 AM and 100 - 115 vehicles at 4 = 5 PM. The subject site is served by METRO- operated buses which run along. 65th Avenue South and South 151st Street. 3. Public Services. Public services are provided to the subject site by the City of Tukwila. A recently built, well - equipped fire station, operated and staffed by the City, is located within four blocks of the..site. The subject site is located within the South Central School District No. 406. 4. Utilities. Water and sanitary sewer services are available to the Desimone site and the lines are sized for future expansion in the area. An 8 -inch sanitary sewer stub is available to the property from 65th Avenue South.. A 10 -inch main water line with stubs to the Desimone.property exists along both 65th Avenue South and South 151st Street. 5. Aesthetics. The quiet, sylvan setting of the Desimone site and the properties which adjoin it to the south and west contrasts with the more urbanized character of the surrounding area. The area in which the Desimone property is located represents one of the last, large undeveloped residential tracts of land on the Tukwila hill. 6. Recreation. No studies have been done to determine the public use of the Desimone property for recreational purposes, but it is anticipated that any such use is minimal. The ruggedness of the site and the fact that it is in private ownership tend to discourage public use. 5Traffic counts were taken on South 151st Street by the City of Tukwila Public Works Department over a 4 -day period, July 24 - 27, 1976. 10 • • 7. Land Use. The Desimone property is generally located within the Tukwila Hill residen- tial area. The Maple Crest and Canyon Estates Apartments are located across 65th Avenue to the east. Properties to the north, south, and west of the subject site are currently undeveloped. Land use trends in the area are for multiple - family residential use, although development to such use has been slow in the past several years. III. ENVIRONMENTAL IMPACT OF THE PROPOSAL For the purposes of..this section, two types of impacts will be discussed: direct and indirect impacts. Direct impacts are those effects which are expected as a result of the rezone action from R.1 to P -F. Indirect impacts include those effects which may be expected as a result of city hall construction on the Desimone property. A. ENVIRONMENTAL IMPACT ON THE NATURAL SYSTEMS 1. Earth. Direct impacts: No impacts to the geology or topography are anticipated as a result of the rezone. Indirect impacts: Future development of a city hall structure and parking lots will necessitate some excavation and filling, altering the existing topography. While the stability of the ground on the site is good for large structures,the underlying bedrock makes excavation difficult. As a result, site preparation costs may be increased. 2. Air. Direct impacts: No impacts to the atomosphere are expected as a result of the rezone action. Indirect impacts: the general area. pollutants in the nificant and will Tukwila area. 3. Water. Development of city hall will increase auto traffic in This additional traffic will cause increased vehicular air around the site. This impact is expected to be insig- not, by itself, detectably decrease air quality in the Direct impacts: No impacts to surface or subsurface waters are anticipated as a result of the rezone action. Indirect impacts: Surface runoff will increase as a result of the construc- tion of city hall and associated parking space. This additional runoff, if not diverted from the present drainage pattern, will drain into a marshy area to the south of the property and could possibly cause problems downstream.6 6SEE, Attachment A for discussion of surface runoff problems. 11 4. Flora. Direct impacts: No impacts to vegetation are expected as a result of the rezone action. Indirect impacts: Construction of city hall and parking space will neces- sarily displace much of the existing tree and groundcover vegetation on the site. The exact amount of vegetation displaced will depend on building size (which will determine parking lot size) and site design. Most of the trees which will be eliminated are deciduous varieties, primarily maples. Because of their location along the property's edges, the few coniferous trees which exist will not be dramatically affected. 5. Fauna. Direct impacts: No impacts are anticipated as a result of the rezone action. Indirect impacts: Construction of a city hall on the Desimone property will significantly reduce the site's existing wildlife habitat. It is expected that these adverse impacts will be uniform on all types of birds currently using the site, but may completely eliminate use by certain mammals. 6. Noise. Direct impacts: No impacts are anticipated as a result of the rezone action. Indirect impacts: Construction of city hall will temporarily increase the ambient noise level in the subject area. Heavy equipment could periodically increase noise readings in excess of 90 dba, although the ambient noise level is expected to be considerably less. Upon completion, increased vehicular traffic is expected to raise the ambient noise level to approximately 65- 75 dba. Increased noise will cause some loss of quietness associated with living in the surrounding residential area. B. HUMAN ENVIRONMENT 1. Housing and Population. Direct impacts: Rezoning the subject site from R.1 to P -F will effectively eliminate future development of the site to residential use. This could mean that future population of the city may be reduced by 60 - 150 persons. Indirect impacts: The existing housing unit along with its occupant will be displaced as a result of construction of city hall on the site. This one resident will be supplanted by approximately 50 - 75 employees who will work at city hall during daytime hours. 2. Transportation /Circulation. Direct impacts: No impacts to transportation systems are expected as a result of the rezone action. 12 • Indirect impacts: Construction of city hall on the Desimone site will increase traffic volumes on all surrounding streets, particularly 65th Avenue South and South 151st Street. It is expected that traffic volumes could increase as much as 50 percent during business hours on these streets. Much of this increase could occur during peak traffic hours. However, the increase in vehicular traffic on 65th Avenue South and South 151st Street is expected to be well within the limits of these streets. The movement of additional vehicles could present safety problems during hours when children are going to and from the elementary school.7 A need for a marked pedestrian crossing may be created as more residents begin to walk to city hall. It is expected that this cros- sing would be across South 151st Street where the entrance to city hall would occur. 3. Public Services. Direct impacts: No impacts to public services or public service levels are expected as a result of the rezone action. Indirect impacts: Centralization of city departments in one complex is expected to have beneficial impacts on public services. Equipment- sharing among departments could reduce redundant expenditures, saving the public money. Centralized city functions would tend to increase coordination and efficiency, with an ultimate reflection in higher public service levels. Locating the police department and court within city hall on the Desimone property would continue the present necessity of transporting law offenders through the residential area.8 According to the police chief, this is an uncomfortable and unnecessary predicament. There may be problems with fire protection of city hall at the Desimone site, particularly if city hall is built of combustible materials (wood construc- tion).9 The problem is one of inadequate water flow requirements at the site, and it is only partly resolved by the addition of sprinklers to the structure. This is due to the fact that the water pressure in the main water line along South 151st Street is approximately 3760 gallons per minute (gpm) while that required for a non - sprinklered building 20,000 square feet in size is 4100 gpm. If sprinklers are added, the necessary water pressure is reduced to 3100 gpm. 4. Utilities. Direct impacts: No impacts to water and sanitary sewer services are expected as a result of the rezone action. 7SEE, Attachment B. 8SEE, Attachment C. 9SEE, Attachment D. 13 • • Indirect impacts: Water and sanitary sewer utilities are sized for future expanon in the area and are capable of handling the requirements of city hall. Increased surface runoff is expected as impervious surfaces are created on the site. If present drainage patterns are maintained, down- stream flooding problems may occur. If this runoff is piped to 65th Avenue south, these downstream problems may be averted. 5. Aesthetics. Direct impacts: No impacts to the aesthetic condition of the subject site are expected as a result of the proposed rezone action. Indirect impacts: Much of the quiet, sylvan character of the Desimone property will be diminished.as a result of the construction ,of city hall and associated parking lots. In essence, much of what the City desires to save (i.e., the "naturalness" of the site) will be diminshed or eliminated by city hall construction. The relationship between city hall and the aesthetic condition of the site is an inverse one: the greater the size of city hall, the lesser the aesthetic condition of the site; and the lesser the size of city hall, the greater the aesthetic condition of the site. In this case, a city hall with 20,000 square feet of floor space has a much less adverse impact on site aesthetics than a 30,000 square foot structure. 6. Land Use. Direct impacts: As a result of rezoning the Desimone site to P -F, it is possible that other rezone requests to allow office or commercial uses will occur for other sites_in the same general area. As the composition of the City Council changes in the future, the .attitude toward permitting these rezone requests may change also. Indirect impacts: Construction of city hall will tend to have a stronger influence on rezone requests for office and commercial uses around city hall. Land use trends. in the area may change from multiple - family residential to office and /or commercial use or to mixed office /commercial /and multiple - family residential uses. IV. ADVERSE ENVIRONMENTAL IMPACTS WHICH MAY BE MITIGATED Many of the adverse environmental impacts may be mitigated with a measure of foresight and planning. Increased surface runoff, generated by the addition of impervious sur- faces, could be diverted to the 65th Avenue storm sewer system, thereby averting any downstream flooding problems associated with_the present drainage pattern. A well - architectured building might help to enhance site aesthetics. Fitting buildings and parking spaces into the "lay of the land" would limit the necessity of extensive excavation and filling while maintaining much of the site's existing vegetation. Generous landscaping after the structure is built would also help to retain the syl- van character and natural charm of the property. 10SEE, Attachment A. 14 V. UNAVOIDABLE ADVERSE ENVIRONMENTAL IMPACTS A portion of the site's vegetation must be removed to provide room for building and parking spaces. Removal of vegetation will mean reduction of wildlife habitat, possibly expelling some species permanently. Land use trends in the Desimone vicinity may change somewhat from multiple- family residential to office and /or commercial uses. Also, law offenders will be trans- ported through the residential area in order to be brought to the police department. VI. ALTERNATIVES TO THE PROPOSAL Although in this case the construction of city hall is not the primary action but a secondary one based upon the rezoning of the property to P -F, the environmental impacts are more tangible and significant than those of rezoning the property. Therefore, this section will consider the alternatives to locating city hall on the Desimone site in lieu of addressing alternatives to the proposed rezone. A. DO NOTHING The "Do Nothing" alternative would entail maintaining the existing city hall facilities on the Tukwila Hill and on Southcenter Boulevard in an acceptable condition for an indefinite period of time. Expansion to accommodate new personnel or increased space needs would be accomplished through piecemeal additions to existing structures. Maintenance of facilities would be based on a long -term rather than a short -term basis. The primary advantage of this alternative is its initial financial savings to the community, for both sites and all structures are presently owned outright by the City. The environmental impact of this alternative would be low, amounting to much the same condition as that which prevails at the present time. Disadvantages are numerous and wide - ranging. Maintenance and expansion costs would be great considering the age and condition of some of the structures. "Over- crowding" of employees would be perpetuated and working conditions would be poor. The present problem of the public trying to find city hall (or the "right" city hall) would be perpetuated also. In addition, this alternative would continue the present policy of equipment duplication, increasing costs and decreasing service levels. B. CITY HALL. ON SOUTHCENTER BOULEVARD (ANNEX) SITE This alternative would include the placement of all city departments in one or a series of buildings on the existing city -owned property at 6230 Southcenter Boule- vard. The present structure at this site would be razed. A conceptual site plan of this alternative, as drawn by Mithun Associates, is shown in Figure 2. Access would be from 62nd Avenue South with buildings (20,000 square feet floor space) generally facing south. 15 r • MtM H • 1S CITY OF TUKWILA MAP 2. ALTERNATIVE SITES FOR TUKWILA CITY HALL* TUKWILA CITY LIMITS 16 Alternative #1 (maintain existing city structures at both locations) Proposed location of city hall (and site of rezone to P -F) Alternative #2 Alternative #3 4,(SEE, APPEw OR -7 PRIM94Sii Nji‘Si __J FIGURE 2. CONCEPTUA•TE PLAN FOR CITY HALL: ANNEX "E NOTE: Like the sketch for the Desimone site, this architect's rendering is intended only to show the relationships between site and building /parking space. Drawn by Mithun Associates • • (1) C, a -0 > • .0 +> > r i ) •r CO V) m 0 S- t/) 4-, S- W N N {..l - r 4-3 C N Lf) C CU > 0 < 0 - L .z +3 TS +- 4-) a) (I ) Lt) N N N FIGURE 3. TUKWILA CITY HALL SITE ANALYSIS The Mithun Associates, Architects F. 1 Ji Pr71HL i Rating Scale: 1. Very poor 2. Poor 3. Average 4, Good 5, Very good CRITERIA FOR EVALUATION 5 2 5 a. Compatibility of proposed use with surrounding zoning 2 3 3 b, Accessibility by constituancy 5 3 5 c. Prominence of location (identity) 3 3 5 d. Appropriateness and efficiency of site size for proposed use 5 4 2 e. Adequacy and efficiency of site for future expansion 3 3 4 f. Vehicular accessibility 4 4 4 g. Accessibility of utilities 4 3 4 h. Accessibility for fire protection (site and buildings) 5 3 5 i. Solar orientation /energy conservation 4 2 5 j, View 3 4 2 k. Indigenous large tree growth 3 3 3 1. Suitability of soil and topography for construction 4 3 4 m. Minimum environmental impact of development (retention of natural site) 2 3 5 n. Minimum site cost 4 3 4 o. Minimum development costs and constraints 2 3 2 p. Minimum impact from freeway and air traffic noise 3 3 4 q, Centrality for police functions 5 5 3 r. Minimum disruption of existing city functions (0(0 5-7 ("q NOTE: Since these ratings are not weighted, addition of the scores would produce misleading totals. Each rating is just a matter of opinion. Some items are relatively unimportant and others very important depending on point of. view. 2000 112TH AVENUE N. E. 18 BELLEVUE, WASHINGTON 98004 454 3344 • • The primary advantage to this alternative is that, unlike the Desimone property, this site would not have to be purchased before construction could begin. Imple- mentation of this alternative could have a strong influence toward the establish- ment of an office district along Southcenter Boulevard. (This area presently has a proclivity toward office use and this alternative could cement it.) City hall on this site would be visible from the business sector of the town, but would be identified with the hill. Accessibility is facile, and traffic need not pass through residential areas in order to reach the site. Fire protection is expected to be better at this site than at the Desimone property. Police need not escort law offenders from the business /industrial areas through the residential area in order to bring them to city hall. Impacts to the physical environment as a result of this alternative would be insignificant due to the cleared and developed condi- tion of the property. Probably the most significant disadvantage to this alternative is the site's size (2.4 acres) which, by itself, may not allow for future expansion of city hall. Vacant properties exist to the west and to the north, but presently none of this land is owned by the City. C. CITY HALL WEST OF I -5 FREEWAY (SITE #5) This alternative would -entail purchasing approximately 6.9 acres located south of Southcenter Boulevard near 53rd Avenue South and erecting city hall. (This site was referred to as Site #5 in the Planning Commission's report on city hall location sites.) The primary advantage of building city hall on this site would be its location with respect to the future expansion of the City, if indeed the City would annex westward. At the present time, however, the site would not be central to the City of Tukwila. This site is large enough for addition of community center. Presently there are several ownerships in this area and acquiring the site may become a complex, tedious problem. Another disadvantage is the expected cost of the property which could be in excess of $600,000. Accessibility to this site varies depending on origin of trip. The noise levels at this site may also cause city hall construction to be more expensive in order to insulate against such. Development of community center on this site would not alleviate need for community park. The Mithun Associates, architects for Tukwila city hall, have evaluated all three sites (Desimone, Annex, and Site #5) for their suitability for city hall. Their analysis is shown in Figure 3. VII. RELATIONSHIP BETWEEN LOCAL SHORT -TERM USES OF MAN'S ENVIRON- MENT AND MAINTENANCE AND ENHANCEMENT OF LONG -TERM PRODUCTIVITY Improvements to 65th Avenue and 151st Street, land use trends and development in the general vicinity, as well as the existing Comprehensive Plan have collec- tively committed the Desimone site to uses higher than single - family residential. To preserve the Desimone site in its current condition on a short -term basis will have no significant effect on its long -term productivity from an environmental standpoint. 19 • • To preserve the Desimone site as an open space on a long -term basis would require public purchase of the property. From an environmental standpoint, it is doubtful whether the environmental gains of this course of action would justify such a decision. The proposed use of the property (i.e., city hall) would still allow a portion of the site to remain in its natural state. VIII.. .IRREVERSIBLE AND IRRETRIEVABLE COMMIITMENTS OF RESOURCES As a result of the construction of city hall on the Desimone site, the greater portion of the existing forest environment will be permanently lost to buildings and parking space. The construction and maintenance of the improvements on the site will require a commitment of natural and human resources. This development will require a long- term commitment of energy resources, water resources, and waste treatment facili- ties. In addition to the monetary commitment required to construct a city hall, the City of Tukwila will also lose approximately five acres of land from its property tax rolls. 20 r PUBLI ORKB DEPARTME T 6830 Bouthoentsr Boulevard Tukwila, Washington 98067 telephone ( 808 3 242 - 8177 July 21, 1976 MEMORANDUM Z To: Fred Satterstrom, Planning Department -J From: Dick Williams, Public Works Department OM Subject: Environmental Impact Statement on City Hall Site Per your request of 20 July 1976, I have researched our records and will attempt to reply to your questions. 4 Q Site I - Desimone Property CL 1. Water & sanitary services are available to Site I. W 2. Lines are sized for future expansion in the area. it 3. a. Sanitary sewer - 8" stub to property line from W 65th Ave. So. 01 b. Water - Main line 10 ", stubs to property line from W 65th Ave. So. and 151st Street. Q4. a. Sanitary sewer - Inside right -of -way. b. Water - Inside right -of -way. 5. No problems with sanitary sewer or water services. H W 6. Present run -off flows in a Southwesterly direction off CO the property and dissipates. Future run -off generated by construction improvements should be piped to 65th Ave. So. CO 7. Any increase in run -off that follows existing pattern could z cause problems downstream from site. See paragraph 6. iE W Site II - 6230 Southcenter Blvd. W z 1. Water and sanitary sewer are available to Site II. (' 2. Lines are sized for future development. z Att4 wv e.' / 21 Memorandum - Fred Oterstrom July 21, 1976 Page two 3. a. Sanitary sewer located on North side of Southcenter Blvd. b. Water - See attached sheet. 4. a. Sanitary sewer - Inside right -of -way. b. Water - Inside right -of -way. 5. No problems with sanitary sewer or water services. 6. Only collection point is at Southwest corner of property and all run -off ends up on W.S.H.D. property, I -405. 7. No problems providing run -off remains in same pattern as existing. I hope this information answers your questions. If not, don't hesitate to holler. RKW /dp Attachment 22 /0-:" Dick Williams, Engineering Technician ,47//-7Z=- 4/130.14-7P S' - 74'.3ERY/CE /- °494-4/4.,41. ,/. • r, ri PEMOY1 51iQE7/SE� // A5SE/eG9LY / , ,v ,04°E TD BE 41B.m/4OONEO 6.X.4 CT 1 OC41 T/O N e/4//e WN �PE�t90 vE A'Ease" Afti°ROX. 6lo'B "C, /. P/..04 , 6".g F /TT /NGS COA/Nee 7 /4N /VDT /' `. i ZM'YE8'G./ "04g" { CDNN£cr ;• , 8'90 *8 ND,M✓ /= 8 °x8 ".r 6 " TEE FL / -8 "a, g, FL.x Ai, ✓. - 8'A49"/ ''7 , FL. x At a /-//671X4 CROSS /NG No.2 6_ "C: /•_ /N /,r "O.O. STEEL CA5/4/6 S"a'.t L oNd 'i941 " f'E.{'STATEfvwx OE#KSPECS, 3 /4��SE•PY /GE 44 i'Scr, .v,''E ,-- i.vewJO�%94,eoSS /user 8 "C. %. //it 2/ "' 'a: O: 's TE',FL C4S /NC, ONG` % "0,,o -vex, sr.4 re- f/r.,ir, o,e,:ix TO • • Ai-Facln Mcwt b MINI -MEMO Fred Satterstrom Planning Department Steven M. Hall, P.E. Public Works Director Department of Public Works City of Tukwila 6230 Southcenter Blvd., Tukwila, Washington 98067 SUBJECT E.I.S. - City Hall Site DATE 4 August 1976 In reference to your memo of 20 July 1976, the Public Works Department has taken . count on So. 151st Street and will be receiving processed data .within the next few days. As to Southcenter Blvd., we will be setting counters at this location this week and will have the data back in processed form in approximately two weeks. As far as your second question on additional volume of traffic to or from City Hall, the impact would be minimal because of the current need for physical communication between City Hall and the Annex, and the present location of the Police Department. The impact of the additional traffic generated through the City Annex would be approxi- mately 10 - 30 cars xSi$NIU per day. Therefore, in my opinion, the traffic impact xicBdA would be fairly minimal. However, I do feel that the presence of Police vehicles operating through a major population center (Maple Crest Apartments, Canyon Estates) and the Tukwila Elementary School pose safety problems during the hours that children are going to and coming from school. RETAIN WHITE COPY FOR OUR FILE. SEND ❑ YELLOW, ❑ PINK COPY TO CUSTOMER. NO REPLY NECESSARY ❑ PLEASE REPLY ❑ TELEPHONE ❑ RETURN ENCLOSED MEMO WITH REPLY 24 • July 29, 1976 • Attacktmektt TO: Fred Satterstrom FROM: John A. Sheets, Chief of Police \14. SUBJECT: Environmental Impact Statement on City Hall Site Pursuant to your request for Police Department input on the location of the Police Department facility in the new City Hall, we offer the following comments: 1. Police facility located in the residential area will sub- stantially increase vehicle or traffic in that area. Some of that traffic will be made up of criminals and motor vehicle traffic Ordinance violators who are appearing or making arrangements to appear in Court. Other vehicle traffic will also increase in the area since a variety of people will need to come to Police Station for a variety of licenses, plan reviews, etc. 2. Police vehicles responding to an emergency from the station will be required to travel through a residential area. This would not be an unusual occurrance since the officers assigned to the Detective Division often respond from the station to the scene of a major crime. 3. If the Police Department is located in the residential area, it will also mean that we will be exposing that area to known criminals who have been arrested for other crimes, usually in the industrial /commercial area. We would, in effect, be giving those persons a guided tour of our residential area which they may use in the future, for criminal escapades in our City. 4. Any facility located in the residential area will also increase the difficulty that members of the general public and other law enforcement agencies will have in locating the facility. 5. It is our opinion that the Police Department should be located in the commercial /industrial area since it would have the least amount of impact on the environment in that area. For the above stated reasons, it appears to us that it would be logical to place the police facility away from the residential areas of our City. 25 TO: FROM: SUBJECT: DATE: OFWE MEMO CITY of TUKWILA FIRE DEPARTMENT FRED SATTERSTROM HUBERT H. CRAWLEY, FIRE CHIEF ENVIROMENTAL IMPACT STATEMENT ON CITY HALL SITES JULY 27, 1976 A 4c tiviet- D PER YOUR REQUEST OF 21 JULY 1976 I AM FORWARDING RESULTS OF THE WATER FLOW TESTS AND CALCULATIONS FOR FIRE FLOWS ON ESTIMATED STRUCTURES, ALSO, I AM TAKING THE LIBERTY OF ENCLOSING THE REPORT TO THE MAYOR IN REGARDS TO THE SAME SUBJECT, DATED 13 JULY 1976. 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FIRE CHIEF SUBJECT: WATER FLOW FOR NEW CITY HALL DATE: JULY 13, 1976 PER OUR CONSERVATION DURING STAFF MEETING OF JULY 12, • ENCLOSED YOU WILL FIND•THE RECOMMENDATION FOR FIRE WATER FLOW FOR THE PROPOSED CITY HALL SITE. THIS CHART WAS ARRIVED AT BY FORMULA USED BY THE INSURANCE SERVICE OFFICE. AS YOU WILL NOTE SQUARE FOOTAGE AND TYPE OF CONSTRUCTION EFFECT. THE AMOUNT OF WATER REQUIRED. IT IS MY HOPE THAT THE ARCHITECT RETAINED BY THE CITY IS ALSO CONSIDERING FIRE SPRINKLERS FOR THE BUILDING. THE CITY HAS SUFFERED ONE LOSS FROM FIRE AND THE INVESTMENT REQUIRED FOR THE INSTALLATION OF SPRINKLERS WOULD BE SMALL CONSIDERING THE LOSS TO THE CITY IN THE EVENT OF A FIRE. MOST ARCHITECTS WILL RESIST THE INSTALLATION OF SPRINKLERS, BECAUSE OF THE DISTRACTION FROM THE APPEARANCE. ., IF THE BUILDING IS IN EXCESS OF 20,000 SQUARE FEET CITY ORDINANCES WILL MANDATE SPRINKLERS, BUT MY CONCERN IS WHEN THE BUILDING, AND IF THE BUILDING, IS UNDER 20,000 SQUARE FEET. 30 BASIS OF FORMULA 20,000 SQUARE FEET (NON - SPRINKLERED) 20,000 SQUARE FEET (SPRINKLERED) 30,000 SQUARE FEET' CITY OF TUKWILA PROPOSED CITY HALL BUILDING FIRE FLOW REQUIREMENTS FOR FIRE SERVICE TYPE V (COMBUSTIBLE) TYPE III -N (ORDINARY TYPE III -1 HR. F.RESTIVE 4100 G P M 2800 G P M 1800 G P M 3100 G P M 2100 G P M 1350 G P M (NON - SPRINKLERED) 4950 G P M 30,000 SQUARE FEET (SPRINKLERED) 3700 G P M 3300 G P M 2100 G P M 2500GPM '1600GPM • ATTACHMENT E The following maps are site analyses taken from the Planning Commission's 1973 report on alter- native sites for the city hall complex. SITE #: Five LOCATION: South of Southcenter Boulevard and West of 53rd Ave. AREA: 6.9 acres, 300,560 sq,.ft. ZONING: C -2 Local Retail. TOPOGRAPHY: Gently sloping MAIN ACCESS:53rd. Ave. S. ADJACENT USES: Public Rights -of -way and commercially zoned property.. UTILITIES: Existing sewer, water and utilities are adequate, however approximately $25,000 would be required for street improvements. SITE PREPARATION: Fill not required PROPERTY COST:$2.15 /sq.ft., $646,000 TOTAL COST: PROPERTY SITE PREPARATION. UTILITIES $646,000 $ 25,000 $671,000 $2.23 /sq.ft. 33 1 I L-'611) 14°4•5 -IC ,s4:5 11.______32.a 40 123 Z82 8.) Tukwila 1531 +9 cZi w N. 40 -. . o � • ( � � ^1 3 A.a r 4JU • ++ 2 N 41 gx vt CI ti %..; bt �. °0 ‹. %.' 10. //// LanaarE - .rr • LIAI TE0 A!CESS / •t2' J 1 -{ PE -- -L:4 -- n-I G H F- -&F' -fit 'i : TUKWI LA ; • PARKWAY — = 401.05 — - -� % Es0 1 SITE 1/: Six LOCATION: North of Southcenter Boulevard and east of 62nd Ave. S AREA: 6.2 acres, . 271,800 sq.ft. ZONING: R -M -H, High Density Multi- Family Residential TOPOGRAPHY: Moderately sloping. to.the Northeast. MAIN ACCESS: 62nd Ave, S. and Southcenter Boulevard. ADJACENT USES: Multi- Family Residentially and Commercially zoned property. UTILITIES: Sanitary sever, water and power are adequate, street . and storm sewer improvements to be financed by outside sources entirely. SITE PREPARATION: Fill not required PROPERTY COST: $1.58 /sq.ft., $429,444 TOTAL COST: PROPERTY $429,444 SITE PREPARATION UTILITIES $429,444 $1.58 /sq.ft. 34 • • /45 24 0 I VAC. -' ♦♦♦ ♦♦ RO ♦• 374 ,,,x.1; _ I _cMOa.7/SOti • a. ... 'sit . I ! i ( , 331321 3I,30291 1_. I }i118I9i^C71)IIt;1 , gc1N 0oM o1 E,FrAr4'c ' A:p,. R?IMCIN7i1 1; 3S:34:331321 311 c)01 t III S /54TH 1 SITE #: Three LOCATION : South of S. 151st St. and west of 65th Ave. S. AREA: 12.3 acres, 535,790 sq. ft . ZONING: R -1 -12.0, Single Family Residential (Multi -Fain. Residential . on Compr. Plan) TOPOGRAPHY : Moderately sloping with a few steeper areas, varies from 132' to 192' MAIN 'ACCESS: 65th Ave. S. and S. 151st St. ADJACENT USES: Single family residential, undeveloped and multi - family property UTILITIES: Approximately $70,000 would be required for extensions to existing utilities. SITE PREPARATION: Fill not required 9.4.'.5 !,ri PROPERTY COST: Approx. $0.75 /sq.ft., $401,840 TOTAL COST: PROPERTY $401,840 SITE PREPARATION UTILITIES $ 70,000 $471,840 - $0.88 /sq.ft. 35 COMMENTS TO DRAFT EIS CITY OF1i 1H114 August 17, 1976 Fred N. Satterstrom, Associate Planner Office of Community Development 6230 Southcenter Boulevard Tukwila, Washington 98188 RE: Draft Environmental Impact Statement City Hall Rezone. Dear Fred: I have reviewed this draft impact statement and find that it covers the proposed action very well. My only comment is concerned with possible unavoidable adverse impacts related to noise. A City Hall is an activity center which draws vehicular traffic to it during daylight hours and,as such, in a resi- dential neighborhood there could possibly be some loss of quietness that is associated with daytime living in a residential area. Thank you for the opportunity to review and comment on this impact statement. /cg ery truly yours, es P. Harris anning Director in � AUG 1 8 j0i6 CITY OF tUKWIIA 37 P.O. BOX 310 / 220 SO. 4th AVE. / KENT, WASHINGTON 98031 / TELEPHONE (206) 872.3300 • • RESPs• ' tSE TO COM `' ENT9 TUKWILA PLANNING ®EPA TMENT RESPONSE TO KENT PLANNING DEPARTMENT: 1. Your comments to the Draft EIS are appreciated. 2. Your suggestion that the additional vehicular traffic generated by city hall would reduce the quietness associated with living in a residential area is a good one. The section on noise impacts has been expanded to reflect this idea. However, rather than state this impact would occur only during daylight hours, we stated that there would be a general loss of quietness for it is quite likely that evening meetings and police operations would generate vehicular noise during the nighttime as well. 38 SE.? 1996 September 7, 1976 Fred N. Satterstrom, Associate Planner Office of Community Development 6230 Southcenter Boulevard Tukwila, Washington 98188 Dear Mr. Satterstrom: State of Washington Department of Ecology Thank you for . the opportunity to review the draft environmental impact statement for the Proposed Rezone of Desimone Property to P -F (to allow city hall). It appears to be a fairly comprehensive impact statement. We have no other comments to make at this time. If you have any questions, please feel free to contact me at 753 -6892. BJ:bjw Sincerely, Barbara Jansen Environmental Review Section Daniel J. Evans, Governor John A. Biggs, Director Olympia, Washington 98504 Telephone (206) 753 -2800 39 11"ZIF �s�cr /ov 74GV�w icxrc/l