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HomeMy WebLinkAboutSEPA EPIC-222-84 - BENAROYA COMPANY - PARKWAY PLAZA PARKING LOTPARKWAY PLAZA PARKINGLOT 17600 - 17790 SOUTHCENTER PY EPIC- 222 -84 WAC 197 -11 -1350 DECLARATION OF NONSIGNIFICANCE Description of proposal raise level of existing parking lot Proponent Jack A Benaroya Co. Location of proposal 17600 - 17790 Southcenter Parkway J.,ead agency . City of Tukwila File No. EPIC - 222 -84 This proposal has been determined not to . have a probably significant adverse impact on the environment. An environmental impact statement (EIS). is not required under RCW 43- 21C.020(c). This decision was made after review by the lead agency of a completed environmental checklist and other information on file with the lead agency. - This information is available to the public on request. Responsible official Bradley C. Collins Position /title Planning Director Address and phone 6200 Southcenter Boulevard 433 -1845 Date 3- 2-7 -8 tf Signature cab CITY OF TUKWILA PERMIT NUMBER IC LL,-1- - d4 CONTROL NUMBER 84-d62- CENTRAL PERMIT SYSTEM - ROU4lit FORM TO: [[ BLDG. .Q PLNG. Q P.W. Q FIRE te POLICE Q P. & R. PROJECT ?L4( PLJ- -7-c Ot IUC.,I fir- G/ I ‘.Llv 4 �5 , ADDRESS I7 &OO " Imo 5, c.. Ppq2KCi DATE TRANSMITTED 72;(2.72 RESPONSE REQUESTED c,Y 3 (2_7 RESPONSE RECEIVE "u 27 C.P.S. STAFF COORDINATOR $ PLEASE REVIEW THE ATTACHED PROJECT PLANS AND RESPOND WITH APPROPRIATE COMMENTS IN THE SPACE BELOW. INDICATE CRUCIAL CONCERNS BY CHECKING THE BOX NEXT TO THE LINE(S) ON WHICH THAT CONC : N IS NOTED: D.R.C. REVIEW REQUESTED J PLAN SUBMITTAL REQUESTED 0 PLAN APPROVED 0 PLAN CHECK DATE COMMENTS PREPARED BY C.P.S. FORM 2 • Control Number UN -a%� CITY OF TUKWILA ENVIRONMENTAL CHECKLIST FORM f AR 2 7 19841 CITY OF TUKVLA PLAANING DEPT. This questionnaire must be completed and submitted with the app ic" a'i'�tm-fo permit. This questionnaire must be completed by all persons applying for a permit from the City of Tukwila., unless it is determined by the Responsible Official that the permit is exempt or unless the applicant and Responsible Official previously agree an Environmental Impact Statement needs to be completed. A fee of $60.00 must accompany the filling of the Environmental Questionnaire . to cover costs of the threshold determination. I. BACKGROUND 1. Name of Proponent: JACV= A. `F3E+ A Q"' GO 2. Address and Phone Number of Proponent: S/OO 1 (bi"h. Ail. '-,. 5 rfLE 108 3. Date Checklist Submitted: ,3/2(0 !,PA- 4. Agency Requiring Checklist: GI T Y of TU K,\\/I c 5. Name of Proposal, if applicable: p,Ca j c Pi_-A - so v i t+ 6. Nature and Brief Description of the Proposal (including but not limited to its size, general design elements, and other factors, that will give an accurate understanding of its scope and nature):, 1 L - s, 0750 C-`(: -'F1LL- M A, -(-72-4,4,,€_,) (L) T'klA__, SIDE 1&c -r!.s, GLOP k� ANJE cY )— 6 5 t- 'P 1 Lori- ]. Location of Proposal (describe the physical setting of the proposal, as well as the extent of the land area affected by any environmental im- pacts, including any other information needed to give an accurate under- standing of the environmental setting of the proposal): LXl7 j11-4 J• A ,A 0 t -1 ) 8. Estimated Date for Completion of the Proposal: 4 12+vjg4/ 9. List of all Permits, Licenses or Government Approvals Required for the Proposal (federal, state and local): (a) Rezone, conditional use, shoreline permit, etc. YES N0'/ (b) King County Hydraulics Permit YES NOJ (c) Building permit YES NO • (d) Puget Sound Air Pollution Control Permit YES NO 'I( (e) Sewer hook up permit YES NO I (f) Sign permit YES NO (g) Water hook up permit YES NOV (h) Storm.water system permit YES` NO (i) Curb cut permit • YES NO (j) Electrical permit (State of Washington) YES NO `/ (k) Plumbing permit (King County) YES NO (1) Other: 10. Do you have any plans for future additions, expansion, or futher activity related to or connected with this proposal? If yes, explain: 11. Do.you know of any plans by others which may affect the property covered by your proposal? If yes, explain: Flo 12. Attach any other application form that has been completed regarding the pro- posal; if none has been completed, but is expected to be filed at some future date, describe the nature of such application form: .NJfr II. ENVIRONt1ENTAL IMPACTS - (Explanations of all "yes" and "maybe" answers are required) 1 . Earth. Will the proposal result in: (a) Unstable earth conditions or in changes in geologic substructures? (b) Disruptions, displacements, compaction or overcover- i ng of the soil? -. (c) Change in topography or ground surface relief fea- tures? (d) The destruction, covering or modification of ar YES MAYBE NO (e) Any increase in wind or water erosion of soils, either on or off the site? (f) Changes in deposition or erosion of beach sands, or changes.in siltation, deposition or erosion which may modify the channel of a river or stream or the bed of the ocean or any bay, inlet or lake? Explanation: b)ou6-ractx, G,000 C.`<. FIU.. UTAT 14-L, ( 12..a vet- r I2 \v,) A?-1O i2.eP4•-iE- I c ) iA 2-K1 KX.q I-OT \V I LL, S 1-DPE. AvlA41' FRDI/I -1)(4), 2. Air. Will the proposal result in: (a) Air emissions or deterioration of ambient air quality? (b)* The creation of'objectionable odors ?. (c) Alteration of air movement, moisture or temperature, or any change in climate, either locally or regionally? Explanation: 3. Water. Will the proposal result in: (a) Changes in currents, or the course or direction of water movements, in either marine or fresh waters? (b) Changes in absorption rates, drainage patterns, Dr the rate and amount of surface water runoff? (c) Alterations to the course or flow of flood waters? (d) Change in the amount of surface water in any water body? (e) Discharge into surface waters, or in any alteration of surface water quality, including but not limited to temperature, dissolved oxygen or turbidity? (f) Alteration of the direction or rate of flow of ground waters? • (g) Change in the quantity of ground waters, either through direct additions or .withdrawals, or through interception of an aquifer by cuts or excavations? YES MAYBE NO (h) Deterioration in ground water quality, either through direct injection, or through the seepage of leachate, phosphates, detergents, waterborne virus or bacteria, or other substances into the ground waters? (.i) Reduction in the amount of water otherwise avail- able for public water supplies? Explanation: 4. Flora. Will the proposal result in: (a) Change in the diversity of species, or numbers of any species of flora (including trees, shrubs, grass, crops, microflora and aquatic plants)? (b) Reduction of the numbers of any unique, rare or . endangered species of flora? (c) Introduction of new species of flora into an area, or in a. barrier to the normal replenishment of existing species? (d) Reduction in acreage of any agricultural crop? Explanation: 4a) 5o►xe p1dA.-hKot ,,M I I b fleivria rte a" re wlaki 5. Fauna. Will the proposal result in: (a). Changes in the diversity of species, or numbers of any species of fauna (birds, land animals including reptiles, fish and shellfish, benthic organisms, insects or microfauna)? (b) Reduction of the numbers of any unique, rare or endangered species of fauna? (c) Introduction of new species of fauna into an area, or result in a barrier to the migration or movement of fauna? (d) Deterioration to existing fish or wildlife habitat? Explanation: YES MAYBE NO 6. Noise. Will the proposal increase existing noise. levels? Explanation: Dvn -/Lx c_OiU5 C-T10A3 OA.) LY 7. Light and Glare. Will the proposal produce new light or glare? Explanation: 8. Land Use. Will the proposal result in the altera -. tion of the present or planned land use of an area? Explanation: 9. Natural Resources. Will the proposal result in: (a) Increase in the rate of use of any natural. resources? (b) Depletion of any nonrenewable natural resource? Explanation: 10. Risk of Upset. Does the proposal involve a risk of an explosion or the release of hazardous substances (including, but not limited to, oil, pesticides, chemicals or radi- ation) in the event of an accident or upset conditions? Explanation: YES MAYBE NO v/ • 11. Population. Explanation: Will the proposal alter the location, distribution, density, or growth rate of the human population of an area? 12. Housing. Will the proposal affect existing housing, or create a demand for additional housing? Explanation: 13. Transportation /Circulation. Will the proposal result in:: (a) Generation of additional vehicular movement? (b) Effects on existing parking facilities, or demand for new parking? (c) Impact upon existing transportation systems ?. (d) Alterations to present patterns of circulation or movement of people and /or goods? (e) Alterations to waterborne, rail or air traffic? (f) Increase in traffic hazards to motor vehicles, bicyclists or pedestrians? Explanation: l'3 h) R€ 's-caQ ea,✓k� �cccluufi 11 14. Public Services. Will the proposal have an effect upon, . or result in a need for'new or altered: governmental services in any of the following areas: Fire protection? Police protection? Schools? Parks or other recreational facilities? (P) Maintenance of public facilities, including YES MAYBE NO • (f) Other governmental services? Explanation: 15. Energy. Will the proposal result in: (a) Use of substantial amounts of fuel or energy? (b) Demand upon existing sources of energy, or require the development of new sources of energy? Explanation: 16. Utilities. Will the proposal result in a need for new systems, or alterations to the following utilities-: (a) Power or natural gas? (b) Communications systems? (c) Water? (d) Sewer or septic tanks? (e) Storm water drainage? (f) Solid waste and disposal? Explanation: 10 ) Re-tout acittL Ogs ins ` aC2mvv� wtoc;�a- e // Kett) tt) S t L et 190- ck 17. Human Health. Will the proposal result in the crea- tion of any health hazard or potential . health hazard (excluding mental health)? Explanation: YES MAYBE NOY 18. Aesthetics. Will the proposal result in the obstruc- tion of any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically of- fensive site open to public view? Explanation: 19. Recreation. Will the proposal result in an impact upon the quality or quantity of exist- ing recreational opportunities? Explanation: 20. Archeological /Histroical. Will the proposal result in an alteration of a signifi- cant archeological or his- torical site, structure, object or building? Explanation: YES MAYBE NO CERTIFICATION BY APPLICANT: I, the undersigned, state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw any declaration of non - significance that it might issue in reliance upon this checklist should there be any willful misrepresentation or willful lack of full disclosure on my part. P Ntttilkor 3/7401CV Signature and Title De-e 2B -1 GENERAL A. REQUIREMENTS .'Special Conditions are binding on the work in this Section. B. RELATED WORK SPECIFIED ELSEWHERE Soil sterilization, Section 2D Base course for asphalt paving, Section 2D Excavation and backfill for Mechanical work, Section 15A Excavation and backfill for Electrical work, Section 16C. MAR .2 I9is1 CITY C PLANNIRIC SECTION 2B PAGE 1 EARTHWORK C. MONUMENTS Carefully maintain bench marks, monuments and other reference points. If disturbed or destroyed, notify the Architect and replace as directed. D. UTILITIES Protect active pipes encountered; notify companies owning same. E. EXCESS OR SHORTAGE OF EARTH Furnish and place additional material or remove excess material from site to obtain indicated grades. F. SELECTION AND OPERATION OF EQUIPMENT The selection and operation of all earth - moving and compaction equip- ment shall be made with due regard to the soil conditions of the site. The contractor shall exercise caution in the operation of equipment near adjacent property structures to prevent damage to the structures caused by ground heaving or movement. SPECIAL. INSPECTION AND TESTS A testing laboratory shall be selected and paid for by the Owner to assure compliance to Section 2B, Earthwork Specifications. • SECTION 2B Page 2 EARTHWORK 2B -2 PRODUCTS A. FILL MATERIALS 1. General: It shall be the responsibility of the Contractor to provide off -site fill materials as required to complete the project and as required by this Section of the Specifications. 2. Gravel Borrow (All areas except landscape planters) Passing 2" square opening 95% - 100% Passing 1/4" square opening 25% - 70% Passing US 40 sieve 0% - 25% Passing US 200 sieve 0% - 5% Gravel borrow fill material shall have the Owner's approval prior to placement, and shall be capable of compaction as specified in :Section 2B -3, paragraph D, "COMPACTION OF FILLS ". 3. Bank Run Sand (landscape planters only) Bank run sand shall be clean and have the Owner's approval prior to placement, 2B -3 EXECUTION A. PREPARATION Excavation and filling required for footings and all other construction shall be compacted as specified in Section 2B -3, paragraph E. B. FINISH GRADING 1. Subgrade Elevations: a. Exterior Concrete Walks: Bottom side of concrete slabs, grade tolerance, 4 +. b. Asphalt Paving Areas: 6" below finished grades, grade tolerance 1 " +. c. Planting Areas: Excavate planting areas to a depth 12" below finish grade, or to a depth as required to remove any gravel, asphalt or concrete slabs and chunks, and all construction debris. Fill planter to top of curb with bank run sand. C. EXCAVATION, FILL AND GRADING 1. General: Excavate as necessary for work shown on drawings or specified, remove rocks, boulders and other obstructions. Allow ample space for formwork. Excavate for footings to firm undisturbed soils. Keep footing excavations clean, dry and firm. Leave bearing surfaces undisturbed, level and true. Grade surface to provide good drainage and prevent ponding of water. Keep excavation free of water. • • SECTION 2B Page 3 EARTHWORK 2B -3 EXECUTION, continued 2. Excess Excavation: Should excavation, through error, be carried to elevations lower than those shown on drawings, fill to proper levels at this Contractor's expense. 3. Filling: Use only approved materials for fills. Make fills as soon as feasible thereafter to insure maximum settlement. Backfill shall be placed in layers not more than 8" thick. Fill to subgrade elevations. 4. Grading: Grade entire area indicated to reasonably true and even surfaces; slope ground away from building walls to facilitate drainage. Grade to uniform levels or slopes between points where grades are noted on drawings, round surfaces at abrupt changes in levels. Grade tolerances shall be as specified in Section 2B -3, paragraph B. D. COMPACTION OF FILLS Compact to 95% density under slabs, 90% density elsewhere, in accordance with ASTM D1557M, Testing Laboratory to make tests to assure compliance. Place all fills in lifts, which, when compacted will not exceed 8" in depth. Compact with vibrator compactor adjacent to walls, multiple - wheeled pneumatic tired rollers, or other approved equipment elsewhere. Compaction tests will be taken in area of backfills prior to placement of any material over areas. Placed material not meeting compaction specifications will be removed by the Contractor, replaced, and re- tested. Costs of tests performed in areas of replacement fills to be paid for by the`General Contractor. END, SECTION 2B • • SECTION 2C PAGE 1 SITE UTILITIES 2C -1 GENERAL A. "GENERAL REQUIREMENTS" are binding on the work in this section. B. STANDARD SPECIFICATIONS Conform to the standards and specifications of the City of Kent Public Works Department and APWA Standards and Specifications 1977 edition. C. WORK ON PUBLIC PROPERTY When any work is located on public property, The Contractor shall conform to all City, County, and State ordinances governing this work and shall comply with all instructions from the respective Building, Engineering, Street and Highway Departments on portions over which they have jurisdiction. D. LOCATIONS OF EXISTING UTILITIES All locations of existing utilities shown on the drawings are approximate and it shall be the Contractor's responsibility to verify the true and correct locations so as to avoid damage or disturbance. 2C -2 SANITARY SEWER A. MATERIALS 1. The pipe and fittings shall be poly vinyl chloride (P.V.C.) pipe to meet extra strength minimum of SDR -35 of the requirements of ASTM specifications D3034 -73. 2. Connection of P.V.C. pipe to manholes shall be accomplished using A.C. manhole coupling corresponding to the size of sewer pipe. 3. All sewer lines under rail shall be ductile iron pipe. 4. All City manholes shall be equipped with concentric cones and safety steps. 2C -3 STORM SEWER A. MATERIALS 1. All piping shall be corrugated Metal Pipe (C.M.P.), 16 gauge minimum. if steel pipe is used; it shall be treated per APWA Standards and specifications. 2. All catch basins shall be APWA type determined by depth and pipe size. SECTION 2C PAGE 2 SITE UTILITIES 2C -4 RAIN LEADERS A. MATERIALS 1. All piping and fittings shall be poly vinyl chloride (P.V.C.) pipe to meet strength minimum of SDR -30 -34 2C -5 DOMESTIC WATER A. MATERIALS 1. See Section 15B -2B for requirements for water piping. 2C -6 EXECUTION A. .GENERAL 1. It shall be the Contractor's responsibility to secure and pay for all necessary permits prior to starting construction. 2. A preconstruction conference and twenty -four (24) hour notice will be required prior to starting new construction. 3. Inspection will be accomplished by a representative of The City of Tukwila. It shall be the contractor's responsibility to notify the Utility Department twenty four (24) hours in advance if backfilling all construction.. B. EXCAVATION AND BACKFILL 1. The Contractor shall provide all excavation, trenching, and backfilling. Excavation and backfilling shall be done in strict accordance with the Earthwork Section of these specifications. Bottoms of trenches shall be tamped hard, and for soil and waste piping, shall be excavated so that pipe will rest on solid ground for its entire length. Sewer and water pipes shall be laid in separate trenches, except where other- wise noted. After pipe lines have been tested, inspected and approved by the Engineer and /or inspector, and prior to backfilling, the excavation shall be cleaned of all kinds of rubbish and backfill material cleaned free of trash. • • C. CLEAN-UP SECTION 2C PAGE 3 SITE UTILITIES I. At the completion of each portion of the work, the Contractor shall immediately remove all waste materials, rubbish, equipment and surplus materials. END SECTION 2C SECTION 2D PAGE 1 ASPHALTIC CONCRETE PAVING 2D -1 GENERAL A. REQUIREMENTS !Special CSnditicns" are binding on the work in this Section. B. STANDARD SPECIFICATIONS Conform to "Recommended Design Procedures and General Specifications on Asphalt Concrete Pavements ", Bulletin No. 3, Edition 1980, issued by the Asphalt Paving Association of Washington, Inc., as supplemented and modified herein. Standard Specifications may be obtained from the Association, 1200 Westlake Avenue North, Seattle, Washington 98109. C. EVIDENCE OF COMPLIANCE Submit certificate from mixing plant stating the paving material delivered to site conforms to these specifications. D. WORK ON PUBLIC PROPERTY When any work is located on public property, the Contractor shall conform to all City, County and State ordinances governing this work and shall comply with all instructions from the respective Building, Street and Highway Departments on portions over which they have jurisdiction. 2D -2 MATERIALS A. BASE COURSE 3" asphalt treated base course, materials and installation shall conform to Section 32, State of Washington Standard specifications, for road and bridge construction. PAVEVENT Modified Class "B" mix, compacted thickness 2 inches. . EXTRUDED CONCRETE CURBS Extruded concrete curbs shall be machine molded Portland cement curbs. Install with concresive 1001 -LPL bonding agent in accordance with the manufacturer's instructions. Bonding agent shall totally cover surface under the extruded curb with a brushed on film with a minimum thickness of 10 mils. Any proposed substitute for bonding agent, must receive Architect's approval. Provide drainage holes wherever asphalt does not slope away from curb and minimum 8' on center all landscape planters. . TRAFFIC MARKING AND PARKING LINE PAINT Preservative Paint Company traffic marking paint L -1919 (white). E. ALTERNATE PAVING SYSTEM Provide 4" crushed rock base course with 2" of class "B" mix pavement in lieu of 3" ATB course. 3" Class "B" in truck roadways. 2D -3 EXECUTION • SECTION 2D PAGE 2 ASPHALTIC CONCRETE PAVING A. PREPARATION FOR INSTALLATION Grading: All surfaces shall be accurate to line and sloped to drain. Grading shall be accomplished by the use of a motor grader and scarifier and subgrade shall be thoroughly rolled with a modern power roller. Machine grading shall be supplemented by hand grading where areas are small, or as required. B. STERILIZING - Surfaces to be paved shall be sterilized with Casoron G-10, or Casoron G -4, or Casoron W -50 mixed and applied according to manufacturer's printed technical data. Sterilizer shall be applied after finish grading and just before base course is laid. No substitutions accepted. Caution shall be used to avoid contamination of all planting areas. C. PRIMING Where pavement abuts building, walls, curbs, walks, etc., an approved asphaltic emulsion, or a mixture of 1/2 paving asphalt and 1/2 gasoline shall be applied in such manner as to prevent soiling surfaces. D. INSTALLATION OF BASE COURSE An on -site inspection shall be made of the base course and all soft areas shall be removed and patched prior to placement of topping. E. FINISH SURFACES Free from ridges of depressions, properly sloped for drainage. Remove and replace, as directed, defective pavement and that which does not drain properly; patching not acceptable. F. PARKING LANES Paint all traffic markings, and 3" wide parking . lines as indicated on the drawings. G. CLEAN UP Clean all surfaces of building, walls, curbs, walks, etc., soiled by work under this Section. At the completion of each portion of the work, the subcontractor shall immediately remove all waste materials, rubbish, equipment and surplus materials. At the end of construction project, all planting areas to be free of asphaltic base or paving. END SECTION 20 • • SECTION 3D PAGE 1 CONCRETE, GENERAL 3D -1 GENERAL A. REQUIREMENTS "Special Conditions" are binding on the work in this Section. B. WORK IN OTHER SECTIONS of these specifications: For extruded concrete curbs, see Section 2D. For concrete formwork, see Section 3A. For steel reinforcement for concrete, see Section 3B. For anchor bolts, see Section 5F. C. CODES Requirements of the Uniform Building Code, 1976 Edition as adopted by the City, if more rigid than those herein, govern, and standard specifications for municipal public works construction where applicable. D. SPECIAL INSPECTIONS AND TESTS Tests and special inspections for concrete shall betas outlined in Special. Conditions and shall be provided for as required by the Building Regulations of the city or as required by the Owner. The special inspector and testing laboratory shall be approved by the City Building Inspections Director and shall be selected and paid for by the Owner. E. COORDINATION OF WORK Provide all necessary sleeves, inserts, anchors, reglets, boxes for openings, etc., for general construction work. Coordinate the work of subcontractors who may set their own sleeves, inserts, anchors, etc. Cooperate with all subcontractors and set all boxes furnished by other trades for chases or openings. F. NOTICE OF INTENT TO PLACE CONCRETE Notify the Testing Laboratory and the Building Department at least 24 hours before the intended placement of concrete. G. COLD WEATHER REQUIREMENTS Provide adequate equipment for heating the concrete materials and protecting the concrete during freezing or near freezing weather. All concrete materials and all reinforcement, forms, fillers and ground with which the concrete is to come in contact shall be free from frost. Use no frozen materials or materials containing ice. H. DEFECTIVE WORK Remove and replace defective work when directed by the Architect. Slabs that show excessive shrinkage cracks, slabs that are not of the thickness called for, and any slab which does not drain . properly, shall be removed and replaced. 3D -2 PRODUCTS A. READY MIX CONCRETE Ready -mix concrete Portland cement Maximum size aggregate SECTION 3D PAGE 2 CONCRETE, GENERAL ASTM C94 -69 ASTM C150- 69a'Type 1 1 - inches B. ADMIXTURES AND BONDING AGENTS Subject to Architect's prior approval. 3D -3 EXECUTION A. GENERAL Conform to "Building Code Requirements for Reinforced Concrete ", ACI 318 -71, as Architect judges them applicable and as supplemented and modified herein. ACI 318 -71 may be obtained from Portland Cement • Association, 721 Boston Building, Denver, Colorado. 80202. 1. Handling of Materials: Deliver, store, and handle materials so as to prevent their deterioration, in the intrusion of foreign matter, or their damage by water or otherwise. Deliver and store packaged materials in original packages until ready for use. . Lines and Levels: Employ an experienced surveyor to pick up reference points established. Supply all necessary lines and levels to insure that all finished concrete work is straight, true and square. 3. Protection of Surfaces Special precautions will be taken to prevent fresh concrete from splashing on exposed and finish surfaces. B. PREPARATION OF EQUIPMENT AND PLACE OF DEPOSIT Before concrete is placed, clean all equipment for mixing and trans- porting the concrete and remove all debris and ice from the spaces to be occupied by the concrete, thoroughly wet or oil forms; masonry filler units that will be in contact with concrete shall be well drenched, and the reinforcement thoroughly cleaned of ice or other coatings. Remove water from place of deposit before concrete is placed. • • 3D -3 EXECUTION, continued SECTION 3D PAGE 3 CONCRETE, GENERAL C. MIXES AND SLUMP f'c = 2500psi for all walks Mixing and placing of all concrete and selection of materials shall be in accordance with the UBC, and ACI code 318 -77, proportions of aggregate to cement shall be such as to produce a dense workable mix with 3" maximum slump which can be placed without segregation or excess free surface water. Air entrain all concrete exposed to weather with 3% to 6% air by volume. D. CONVEYING AND DEPOSITING 1. Conveying: a. Convey concrete from the mixer to the place of final deposit by methods which will prevent the separation or loss of materials. b. Equipment for chuting, pumping, and pneumatically conveying concrete shall be of such size and design as to insure a practically continuous flow of concrete at the delivery and without separation of materials. 2. Depositing: a. Deposit concrete as nearly as practicable in its final position to avoid segregation due to rehandling or flowing. The concreting shall be carried on at such a rate that the concrete is at all times plastic and flows readily into the spaces. No concrete that has pratially hardened or been contaminated by foreign materials shall be deposited on the work, nor shall retempered concrete be used. b. When concreting is once started, it shall be carried on as a continuous operation until the placing of the section is completed. The top surface shall be generally level. c. Thoroughly compact all concrete by suitable means during the operation of placing and thoroughly work into the corners of the forms. E. VIBRATION Employ mechanical vibrators supplemented by hand rodding whenever in the opinion of the Concrete Inspector or Architect, additional vibration may be necessary. • H. CONCRETE FINISHES • SECTION 3D Page 5 CONCRETE, GENERAL 1. Concrete Walks and Landings Finish shall be lightly broomed textured surface. Score surface with a broom just after the initial set. Patterns shall be a straight line pattern. 2. Slopes to Drain True to line 3/16 inch per foot unless noted otherwise. I. CLEANING 1. Leave all finished surfaces clean. Thoroughly clean to remove all dirt, oil, etc. J. CLEAN UP 1. At the completion of each portion of work, the Contractor shall immediately remove all waste materials, rubbish, equipment and surplus materials. END, SECTION 3D • Control Number $ 60 a) CITY OF TUKWILA ENVIRONMENTAL CHECKLIST FORM. rfri FEZ F{ MAR 2 "/1984 1. PLANNING DEPT. This questionnaire must be completed and submitted with the application for permit. This questionnaire must be completed by all persons applying for a permit from the City of Tukwila., unless it is determined by the Responsible Official that the permit is exempt or unless the applicant and Responsible Official previously agree an Environmental Impact Statement needs to be completed. A fee of $50.00 must accompany the filling of the Environmental Questionnaire to cover costs of the threshold determination. I. BACKGROUND 1. Name of Proponent: �ALVl- A. 13F_►-J-AgO`t'A- GO 2. Address and Phone Number of Proponent: S(oD 1 (oth, AV. 3. Date Checklist Submitted: 4. Agency Requiring Checklist: o o 5/ 210 //AA- CITY dF TUK\ \z(( 5. Name of Proposal, if applicable: j7iz4c.wA,c PtA2- sovi H- HU_ Nature and Brief Description of the Proposal (including but,not limited to its size, general design elements, and other factors that will give an accurate understanding of its scope and nature): s, ort C— F LL_- �. (�-rz -mac -, ( Sm DE; a P tk c E p mi4 1,,_o c • od _ i-5 Ti m `P - 1. Lar 7. Location of Proposal (describe the physical setting of the proposal, as well as the extent of the land area affected by any' environmental im- pacts, including any other information needed to give an accurate under- standing of the environmental setting of the proposal): Xt- (l L-t-y f?A A4 t -10 15e-tm I i toC - .1 -1 110 o i tI 1_7AcJ4 t-) a lck, 1,L)A 61M 8. Estimated Date for Completion of the Proposal: 4 12b lg4{ 9. List of all Permits, Licenses or Government Approvals Required for the Proposal (federal, state and local): (a) Rezone, conditional use, shoreline permit, etc. YES NO / (b) King County Hydraulics Permit YES ,N0 1 (c) Building permit YES V" t0 • (d) Puget Sound Air Pollution Control Permit YES NO ✓ (e) Sewer hook up permit YES NO I (f) Sign permit YES NO V (g) Water hook up permit YES NOV (h) Storm.water system permit YES` NO (i) Curb cut permit • YES NO '(j) Electrical permit (State of Washington) YES NO / (k) Plumbing permit (King County) YES NO (1) Other: 10. Do you have any plans for future additions, expansion, or futher activity related to or connected with this proposal? If yes, explain: 11.. Do you know of any plans by others which may affect the property covered by your proposal? If yes, explain: 10 12. Attach any other application form that has been completed regarding the pro- posal; if none has been completed, but is expected to be filed at somefuturc date, describe the nature of such application foam: II. ENVIRONMENTAL IMPACTS (Explanations of all "yes" and "maybe" answers are required) 1. Earth. Will the proposal result in: (a) Unstable earth conditions or in changes in geologic substructures? (b) Disruptions, displacements, compaction or overcover- ing of the soil? -. Change in topography or ground surface relief fea- tures? (c) .(d) The destruction, covering.or modification of E- YES MAYBE NO (e) Any increase in wind or water erosion of soils, either on or off the site? (f) Changes in deposition or erosion of beach sands, or changes-in siltation, deposition or erosion which may modify the channel of a river or stream or the bed of the ocean or any bay, inlet or lake? Explanation: �AvEc. 119 Iti3Ta�.c. s, OOo G.`l, Flu )4iA mac-- y rjp"(Z2-13\v,) D Z eaJ� I c) PA 12-K {-OT \V I Lk, 5 LOPE, AI44 pROI,4 43--aily 2. Air. Will the proposal result in: (a) Air emissions or deterioration of ambient air quality? (b) The creation of. objectionable odors? (c) Alteration of air movement, moisture or temperature, or any change in climate, either locally or regionally? Explanation: 3. Water. Will the proposal result in: (a) Changes in currents, or the course or direction of water movements, in either marine or fresh waters? (b) Changes in absorption rates, drainage patterns, Dr the rate and amount of surface water runoff? (c) Alterations to the course or flow of flood waters? (d) Change in the amount of surface water in any water body? (e) Discharge into surface waters, or in any alteration of surface water quality, including but not limited to temperature, dissolved oxygen or turbidity? (f) Alteration of the direction or rate of flow of ground waters? • (g) Change in the quantity of ground waters, either through direct additions or- withdrawals, or through • interception of an aquifer by cuts or excavations? ; YES MAYBE NO (h) Deterioration in ground water quality, either through direct injection, or through the seepage of leachate, phosphates, detergents, waterborne virus or bacteria, or other substances into the ground waters? (i) Reduction in the amount of water otherwise avail- able for public water supplies? Explanation: 4. Flora. Will the proposal result in: (a) Change in the diversity of species, or numbers of any species of flora (including trees, shrubs, grass, crops, microflora and aquatic plants)? (b) Reduction of the numbers of any unique, rare or endangered species of flora? (c) 'Introduction of new species of flora into an area, or in a barrier to the normal replenishment of existing species? (d) Reduction in acreage of any agricultural crop? Explanation: 4,9 5orne plaAchKal 14 d 1 b -e p-&.(vr a ►1tn. f b re wt 6.1 5. Fauna. Will the proposal result in: (a). Changes in the diversity of species, or numbers of any species of fauna (birds, land animals including reptiles, fish and shellfish, benthic organisms, insects or microfauna)? (b) Reduction of the numbers of any unique, rare or endangered species of fauna? (c) Introduction of new species of fauna into an area, or result in a barrier to the migration or movement of fauna? (d) Deterioration to existing fish or wildlife habitat? Explanation: YES MAYBE NO 6. Noise. Will the proposal increase existing noise levels? Explanation: Do2hoe_ ok)LY 7. Light and Glare. Will the proposal produce new light or glare? Explanation: 8. Land Use. Will the proposal result in the altera- tion of the present or planned land use of an area? Explanation: 9. Natural Resources. Will the proposal result in: (a) Increase in the rate of use of any natural resources? (b) Depletion of any nonrenewable natural resource? Explanation: 10. Risk of Upset. Does the proposal involve a risk of an explosion or the release �f hazardous substances (including, but not limited to, oil, pesticides, chemicals or radi- ation) in the event of an accident or upset conditions? Explanation: YES MAYBE NO 11. Population. Explanation: • Will the proposal alter the location, distribution, density, or growth rate of the human population of an area? 12. tiousig. Will create pa affect existing housing? or create Explanation: 13. Trans ortation /Circulation. Will the proposal result in: (a) Generation of additional vehicular movement? (b) Effects on existing parking facilities, or demand for new parking? (c) Impact upon existing transportation systems ?. (d) Alterations to present patterns of circulation or movement of people and /or goods? (e) Alterations to waterborne, rail or air traffic? (f) Increase in traffic hazards to motor vehicles, bicyclists or pedestrians. Explanation: t3 h) R64 a,✓k t \cc,iour YES MAYBE NO 14. Public Services. Will or altered upon, altered governmental services in any of the following areas: (a) (b) (c) Schools? (d) Parks or other recreational facilities? (e) Maintenance of public facilities, including Fire protection? Police protection? • • • (f) Other governmental services? Explanation: 15. Energy. Will the proposal result in: (a) Use of substantial amounts of fuel or energy? (b) Demand upon existing sources of energy, or require the development of new sources of energy? Explanation: 16: Utilities. Will the proposal result in a need for new systems, or alterations to the following utilities: (a) Power or natural gas? (b) Communications systems? (c) Water? (d) Sewer or septic tanks? (e) Storm water drainage? (f) Solid waste and disposal? Explanation: Ib j z[zi czish oz ca bets ins 'f `o et . wt.o c� / wz J S L (3k • e4 ()0.J s 17. Human Health. Will the proposal result in the crea- tion of any health hazard or potential health hazard (excluding mental health)? Explanation:' YES MAYBE NO • 18. Aesthetics. Will the proposal result in the obstruc- tion of any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically of- fensive site open to public view? Explanation: 19. Recreation. Will the proposal result in an impact upon the quality or quantity of exist- ing recreational opportunities? Explanation: 20. Archeological /Histroical. Will the proposal result in an alteration: of a signifi- cant archeological or his - torical site, structure, object or building? Explanation: YES MAYBE NO CERTIFICATION BY APPLICANT: I, the undersigned, state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw'any declaration of non - significance that it might issue in reliance upon this checklist should there be any willful misrepresentation or willful lack of full disclosure on my part. Signature and itle td-V 3 /A1Cy Da 7e • 2B -1 GENERAL A. REQUIREMENTS .'Special Conditons Mar 'f\.1AR 2 "' .1984 CITY OF "I"1s1 i-J.LA PLANNING CERT. are binding on the work in this Section. SECTION 2B PAGE 1 EARTHWORK B. RELATED WORK SPECIFIED ELSEWHERE Soil sterilization, Section 2D. Base course for asphalt paving, Section 2D Excavation and backfill for Mechanical work, Section 15A Excavation and backfill for Electrical work, Section 16C. C. MONUMENTS .. Carefully maintain bench marks, monuments and other reference points. . If disturbed or destroyed, notify the Architect and replace as directed. D. UTILITIES Protect active pipes encountered; notify companies owning same. E. EXCESS OR SHORTAGE OF EARTH Furnish and place additional material or remove excess material from site to obtain indicated grades. F. SELECTION AND OPERATION OF EQUIPMENT The selection and operation of all earth - moving and compaction equip- ment shall be made with due regard to the soil conditions of the site. The contractor shall exercise caution in the operation of equipment near adjacent property structures to prevent damage to the structures caused by ground heaving or movement. G SPECIAL INSPECTION AND TESTS A testing laboratory shall be selected and paid for by the Owner . to assure compliance to Section 2B, Earthwork Specifications. • • 2B -2 PRODUCTS A. FILL MATERIALS SECTION 2B Page 2 EARTHWORK 1. General: It shall be the responsibility of the Contractor to provide off -site . fill materials as required to complete the project and as required by this Section of the Specifications. 2. Gravel Borrow (All areas except landscape planters) Passing 2" square opening 95% - 100% Passing 1/4" square opening 25% - 70% Passing US 40 sieve 0% - 25% Passing US 200 sieve 0% - 5% Gravel borrow fill material shall have the Owner's approval prior to placement, and shall be capable of compaction as specified in Section 2B -3, paragraph D, "COMPACTION OF FILLS ". 3. Bank Run Sand (landscape planters only) Bank run sand shall be clean and have the Owner's approval prior to placement, 2B -3 EXECUTION A. PREPARATION Excavation and filling required for footings and all other construction shall be compacted as specified in Section 2B -3, paragraph E. B. FINISH GRADING 1. Subgrade Elevations: a. Exterior Concrete Walks: Bottom side of concrete slabs, grade tolerance, *+. b. Asphalt Paving Areas: 6" below finished grades, grade tolerance 1 " +. c. Planting Areas: Excavate planting areas to a depth 12" below finish grade, or to a depth as required to remove any gravel, asphalt or concrete slabs and chunks, and all construction debris. Fill planter to top of curb with bank run sand. C. EXCAVATION, FILL AND GRADING 1. General: Excavate as necessary for work shown on drawings or specified, remove rocks, boulders and other obstructions. Allow ample space for formwork. Excavate for footings to firm undisturbed soils. Keep footing excavations clean, dry and firm. Leave bearing surfaces undisturbed, level and true. Grade surface to provide good drainage and prevent ponding of water. Keep excavation free of water. • • SECTION 2B Page 3 EARTHWORK 2B -3 EXECUTION, continued 2. Excess Excavation: Should excavation, through error, be carried to elevations lower than those shown on drawings, fill to proper levels at this Contractor's expense. 3. Filling: Use only approved materials for fills. Make fills as soon as feasible thereafter to insure maximum settlement. Backfill shall be placed in layers not more than 8" thick. Fill to subgrade elevations. 4. Grading: Grade entire area indicated to reasonably true and even surfaces; slope ground away from building walls to facilitate drainage. Grade to uniform levels or slopes between points where grades are noted on drawings, round surfaces at abrupt changes in levels. Grade tolerances shall be as specified in Section 2B -3, paragraph B. D. COMPACTION OF FILLS Compact to 95% density under slabs, 90% density elsewhere, in accordance with ASTM D1557M, Testing Laboratory to make tests to assure compliance. Place all fills in lifts, which, when compacted will not exceed 8" in depth. Compact with vibrator compactor adjacent to walls, multiple - wheeled pneumatic tired rollers, or other approved equipment elsewhere. Compaction tests will be taken in area of backfills prior to placement of any material over areas. Placed material not meeting compaction specifications will be removed by the Contractor, replaced, and re- tested. Costs of tests performed in areas of replacement fills to be paid for by the General Contractor. END, SECTION 2B • • SECTION 2C PAGE 1 SITE UTILITIES 2C -1 GENERAL A. "GENERAL REQUIREMENTS" are binding on the work in this section. B. STANDARD SPECIFICATIONS Conform to the standards and specifications of the City of Kent Public Works Department and APWA Standards and Specifications 1977 edition. C. WORK ON PUBLIC PROPERTY When any work is located on public property, The Contractor shall conform to all City, County, and State ordinances governing this work and shall comply with all instructions from the respective Building, Engineering, Street and Highway Departments on portions over which they have jurisdiction. D. LOCATIONS OF EXISTING UTILITIES All locations of existing utilities shown on the drawings are approximate and it shall be the Contractor's responsibility to verify the true and correct locations so as to avoid damage or disturbance. 2C -2 SANITARY SEWER A. MATERIALS 1. The pipe and fittings shall be poly vinyl chloride (P.V.C.) pipe to meet extra strength minimum of SDR -35 of the requirements of ASTM specifications D3034 -73. 2. Connection of P.V.C. pipe to manholes shall be accomplished using A.C. manhole coupling corresponding to the size of sewer pipe. 3. All sewer lines under rail shall be ductile iron pipe. 4. All City manholes shall be equipped with concentric cones and safety steps. 2C -3 STORM SEWER A. MATERIALS 1. All piping shall be corrugated Metal Pipe (C.M.P.), 16 gauge minimum. if steel pipe is used; it shall be treated per APWA Standards and specifications. 2, All catch basins shall be APWA type determined by depth and pipe size. SECTION 2C PAGE 2 SITE UTILITIES 2C -4 RAIN LEADERS A. MATERIALS 1. All piping and fittings shall be poly vinyl chloride (P.V.C.) pipe to meet strength minimum of SDR -30 -34 2C -5 DOMESTIC WATER A. MATERIALS 1. See Section 15B -2B for requirements for water piping. 2C -6 EXECUTION A. .GENERAL 1. It shall be the Contractor's responsibility to secure and pay for all necessary permits prior to starting construction. 2. A preconstruction conference and twenty -four (24) hour notice will be required prior to starting new construction. 3. Inspection will be accomplished by a representative of The City of Tukwila. It shall be the contractor's responsibility to notify the Utility Department twenty four (24) hours in advance if backfilling all construction. B. EXCAVATION AND BACKFILL 1. The Contractor shall provide all excavation, trenching, and backfilling. Excavation and backfilling shall be done in strict accordance with the Earthwork Section of these specifications. Bottoms of trenches shall be tamped hard, and for soil and waste piping, shall be excavated so that pipe will rest on solid ground for its entire length. Sewer and water pipes shall be laid in separate trenches, except where other- wise noted. After pipe lines have been tested, inspected and approved by the Engineer and /or inspector, and prior to backfilling, the excavation shall be cleaned of all kinds of rubbish and backfill material cleaned free of trash. C. CLEAN-UP • • SECTION 2C PAGE 3 SITE UTILITIES 1. At the completion of each portion of the work, the Contractor shall immediately remove all waste materials, rubbish, equipment and surplus materials. END SECTION 2C 2D -1 GENERAL A. REQUIREMENTS °Special C.5nd it icrs" SECTION 2D PAGE 1 ASPHALTIC CONCRETE PAVING are binding on the work in this Section. B. STANDARD SPECIFICATIONS Conform to "Recommended Design Procedures and General Specifications on Asphalt Concrete Pavements ", Bulletin No. 3, Edition 1980, issued by the Asphalt Paving Association of Washington, Inc., as supplemented and modified herein. Standard Specifications may be obtained from the Association, 1200 Westlake Avenue North, Seattle, Washington 98109. C. EVIDENCE OF COMPLIANCE Submit certificate from mixing plant stating the paving material delivered to site conforms to these specifications-. D. WORK ON PUBLIC PROPERTY When any work is located on public property, the Contractor shall conform to all City, County and State ordinances governing this work and shall comply with all instructions from the respective Building, Street and • Highway Departments on portions over which they have jurisdiction. 2D -2 MATERIALS A. BASE COURSE 3" asphalt treated base course, materials and installation shall conform to Section 32, State of Washington Standard specifications, for road and :bridge construction. B. PAVEVENT Modified Class "B" mix, compacted thickness 2 inches. C. EXTRUDED CONCRETE CURBS Extruded concrete curbs shall be machine molded Portland cement curbs. Install with concresive 1001 -LPL bonding agent in accordance with the manufacturer's instructions. Bonding agent shall totally cover surface under the extruded curb with a brushed on film with a minimum thickness of 10 mils. Any proposed substitute for bonding agent, must receive Architect's approval. Provide drainage holes wherever asphalt does not slope away from curb and minimum 8' on center all landscape planters. . . TRAFFIC MARKING AND PARKING LINE PAINT Preservative Paint Company traffic marking paint L -1919 (white). E. ALTERNATE PAVING SYSTEM •Provide 4" crushed rock base course with 2" of class "B" mix pavement in lieu of 3" ATB course. 3" Class "B" in truck roadways. SECTION 2D PAGE 2 ASPHALTIC CONCRETE PAVING 2D -3 EXECUTION A. PREPARATION FOR INSTALLATION Grading: All surfaces shall be accurate to line and sloped to drain. Grading shall be accomplished by the use of a motor grader and scarifier and subgrade shall be thoroughly rolled with a modern power roller. Machine grading shall be supplemented by hand grading where areas are small, or as required. B. STERILIZING Surfaces to be paved shall be sterilized with Casoron.G -10, or Casoron G -4, or Casoron W -50 mixed and applied according to manufacturer's printed technical data. Sterilizer shall be applied after finish grading and just before base course is laid. No substitutions accepted. Caution shall be used to avoid contamination of all planting areas. C. PRIMING Where pavement abuts building, walls, curbs, walks, etc., an approved asphaltic emulsion, or a mixture of 1/2 paving asphalt and 1/2 gasoline shall be applied in such manner as to prevent soiling surfaces. D. INSTALLATION OF BASE COURSE An on -site inspection shall be made of the base course and all soft areas shall be removed and patched prior to placement of topping. E. FINISH SURFACES Free from ridges of depressions, properly sloped for drainage. Remove and replace, as directed, defective pavement and that which does not drain properly; patching not acceptable. F. PARKING LANES Paint all traffic markings, and 3" wide parking lines as indicated on the drawings. G. CLEAN UP Clean all surfaces of building, walls, curbs, walks, etc., soiled by work under this Section. At the completion of each portion of the work, the subcontractor shall immediately remove all waste materials, rubbish, equipment and surplus materials. At the end of construction project, all planting areas to be free of asphaltic base or paving. END SECTION 2D • • SECTION 3D PAGE 1 CONCRETE, GENERAL 3D -1 GENERAL A. REQUIREMENTS "Special Conditions" are binding on the work in this Section. B. WORK IN OTHER SECTIONS of these specifications: For extruded concrete curbs, see Section 2D. For concrete formwork, see Section 3A. For steel reinforcement for concrete, see Section 3B. For anchor bolts, see Section 5F. C. CODES Requirements of the Uniform Building Code, 1976 Edition as adopted by the City, if more rigid than those herein, govern, and standard specifications for municipal public works construction where applicable. D. SPECIAL INSPECTIONS AND TESTS Tests and special inspections for concrete shall betas outlined in Special' tions and shall be provided for as required by the Building Regulations of the city or as required by the Owner. The special inspector and testing laboratory shall be approved by the City Building Inspections Director and shall be selected and paid for by the Owner. E. COORDINATION OF WORK Provide all necessary sleeves, inserts, anchors, reglets, boxes for openings, etc., for general construction work. Coordinate the work of subcontractors who may set their own sleeves, inserts, anchors, etc. Cooperate with all subcontractors and set all boxes furnished by other trades for chases or openings. F. NOTICE OF INTENT TO PLACE CONCRETE Notify the Testing Laboratory and the Building Department at least 24 hours before the intended placement of concrete. G. COLD WEATHER REQUIREMENTS Provide adequate equipment for heating the concrete materials and protecting the concrete during freezing or near freezing weather. All concrete materials and all reinforcement, forms, fillers and ground with which the concrete is to come in contact shall be free from frost. Use no frozen materials or materials containing ice. H. DEFECTIVE WORK Remove and replace defective work when directed by the Architect. Slabs that show excessive shrinkage cracks, slabs that are not of the thickness called for, and any slab which does not drain properly, shall be removed and replaced. 30 -2 PRODUCTS A. READY MIX CONCRETE Ready -mix concrete Portland cement Maximum size aggregate SECTION 30 PAGE 2 CONCRETE, GENERAL ASTM C94 -69 ASTM C150 -69a Type 1 1 - z inches B. ADMIXTURES AND BONDING AGENTS Subject to Architect's prior approval. 3D -3 EXECUTION A. GENERAL Conform to "Building Code Requirements for Reinforced Concrete ", ACI 318 -71, as Architect judges them applicable and as supplemented and modified herein. ACI 318 -71 may be obtained from Portland Cement Association, 721 Boston Building, Denver, Colorado. 80202. 1. Handling of Materials: Deliver, store, and handle materials so as to prevent their deterioration, in the intrusion of foreign matter, or their damage by water or otherwise. Deliver and store packaged materials in original packages until ready for use. 2. Lines and Levels: Employ an experienced surveyor . to pick up reference points established. Supply all necessary lines and levels to insure that all finished concrete work is straight, true and square. 3. Protection of Surfaces Special precautions will be taken to prevent fresh concrete from splashing on exposed and finish surfaces. B. PREPARATION OF EQUIPMENT AND PLACE OF DEPOSIT Before concrete is placed, clean all equipment for porting the concrete and remove all debris and ice be occupied by the concrete, thoroughly wet or oil filler units that will be in contact with concrete and the reinforcement thoroughly cleaned of ice or Remove water from place of deposit before concrete mixing and trans' - from the spaces to forms; masonry shall be well drenched, other coatings. is placed. • • • 3D -3 EXECUTION, continued SECTION 3D PAGE 3 CONCRETE, GENERAL C. MIXES AND SLUMP f'c = 2500psi for all walks Mixing and placing of all concrete and selection of materials shall be in accordance with the UBC, and ACI code 318 -77, proportions of aggregate to cement shall be such as to produce a dense workable mix with 3" maximum slump which can be placed without segregation or excess free surface water. Air entrain all concrete exposed to weather with 3% to 6% air by volume. D. CONVEYING AND DEPOSITING 1. Conveying: a. Convey concrete from the mixer to the place of final deposit by methods which will prevent the separation or loss of materials. b. Equipment for chuting, pumping, and pneumatically conveying concrete shall be of such size and design as to insure a practically continuous flow of concrete at the delivery and without separation of materials. 2. Depositing: a. Deposit concrete as nearly as practicable in its final position to avoid segregation due to rehandling or flowing. The concreting shall be carried on at such a rate that the concrete is at all times plastic and flows readily into the spaces. No concrete that has pratially hardened or been contaminated by foreign materials shall be deposited on the work, nor shall retempered concrete be used. b. When concreting is once started, it shall be carried on as a continuous operation until the placing of the section is completed. The top surface shall be generally level. c. Thoroughly compact all concrete by suitable means during the operation of placing and thoroughly work into the corners of the forms. E. VIBRATION Employ mechanical vibrators supplemented by hand rodding whenever in the opinion of the Concrete Inspector or Architect, additional vibration may be necessary. • H. CONCRETE FINISHES • SECTION 3D Page 5 CONCRETE, GENERAL 1. Concrete Walks and Landings Finish shall be lightly broomed textured surface. Score surface with a broom just after the initial set. Patterns shall be a straight line pattern. 2. Slopes to Drain True to line 3/16 inch per foot unless noted otherwise. I. CLEANING 1. Leave all finished surfaces clean. Thoroughly clean to remove all dirt, oil, etc. J. CLEAN UP 1. At the completion of each portion of work, the Contractor shall immediately remove all waste materials, rubbish, equipment and surplus materials. END, SECTION 3D