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Home My WebLink AboutLUA81-065 :. . BEkIk '. . OF FILE • . . . . . FILE TITLE m lc RoFtmE . _ . 0 f . . . . . (T.s a 4,n i c ti„„). A _.4 ./ ., . ,• , ..., , - PI.- , ,,,,. .. . . , ,__ . . ........ , . ..„.. . . '' di/ 4. ' l . . • /1/7// OF R� 0 q� ► CDTHE RENTON CITY COUNCIL sail g. MUNICIPAL BUILDING • 200 MILL AVENUE SOUTH • RENTON, WASHINGTON 98055 . 235-2586 nO It FD SEP1 `'+'r ,1 F,��` ip T 7 ( Iu- ? P. �� October 12, 1981 APPEAL FILED BY MUNICIPALITY OF METROPOLITAN SEATTLE, METRO SPECIAL PERMIT SP-065-81 ; RENTON TREATMENT PLANT: 1200 MONSTER ROAD To Parties of Record: The Renton City Council ' s Planning and Development Committee will, review this appeal at its meeting of Thursday, October 29, 1981 , at 4:30 p.m. in the sixth floor conference room of the Municipal Building, 200 Mill Avenue South, Renton. If you have any questions regarding this meeting, please phone the Council secretary at 235-2586. Thank you. Randy Rockhill , Chairman • Planning and Development Committee RR:bd . OF 1 iv 0 THE CITY OF RENTON `0 0 Z MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH. 98055 n sal BARBARA Y. SHINPOCH, MAYOR • PLANNING DEPARTMENT 235- 2550 O Q' • 0 SEP1E�O� MEMORANDUM October 26, 1981 TO: Planning and Development Committee FROM: David R. Clemens, Acting Planning Director RE: METRO APPEAL SPECIAL PERMIT 065-81, RENTON TREATMENT PLANT METRO has appealed the wording of Condition No. 4 of the Hearing Examiner's decision dated September 8, 1981. METRO contends that the condition is worded in such a fashion that it is not possible to determine the extent of the requirement. In their request for reconsideration, dated September 10, 1981, METRO notes that it does not have sufficient information to grant an easement which might interfere with future expansion of the Renton Treatment Plant. The Examiner's response to the request for reconsideration notes that expansion of the treatment plant beyond the current flood protection berm would adversely impact the available flood storage capacity in this vicinity. The Examiner concludes that the condition for a drainage easement remains appropriate in this application. The Public Works Director in his letter of September 28, 1981, describes the requirements for the drainage easement to protect flood storage to elevation 16 from periodic flooding inundations. The effect of the requirement for this drainage easement would be to preclude development of this property until such time as the 100 year flood storage is no longer required on this prop,rty. 1. The applicant• has failed to state in his letter of appeal an error in fact or law attributable to the Examiner's decision in this matter. 2. The requirement tor drainage easement to protect the flood storage capacity in this vicinity is appropriate to provide constructive notice to METRO or any future owner of the subject property, that no development may occur until such time as the flood hazard has been remove. 3. The Public Works Department has adequately defined the required drainage easement in its correspondence with METRO. Recommendation: That the appeal by METRO in the case of Special Permit 065-81 should be denied and the Hearing Examiner's decision upheld. cc: Richard C. Houghton, Public Works Director sue -_ v �o ® PUBLIC WORKS DEPARTMENT- � G-- ♦$ z DESIGN/UTILITY ENGINEERING • 235-2631 z , . MUNICIPAL BUILDING 200 MILL AVE.SO. RENTON,WASH.88055 . 4 0,94Tso SEP-c • BARBARA Y. SHINPOCH September 28, 1981 MAYOR 11.1 Mr. Joe Fernandes Municipality of Metropolitan Seattle 821 2nd Avenue Seattle, WA Subject: SP-065-81 • Dear Mr. Fernandes: In accordance with your request for additional clarification concern- ing condition No. 4 of the Land Use Hearing Examiner's findings for SP-065-81 the following information is offered. Since the P-1 channel and backwater pond have not been constructed and said construction is in question, no new fill will be allowed within the 100 year flood plan. Portions of Metro's property both north and east of the berm which was installed in 1968 is in this flood plain. This property cannot be filled therefore a drainage easement over said property is being requested as a condition of your special permit. This easement will identify the property below elevation 16.0 outside of the berm and allow for periodic innundations of said property. Hopefully this provides the clarification you requested. If not, or you wish to discuss the matter further, please advise. Very truly yours, R. and C. Houghton Acting Public Works Director DGM:pmp r..,..,,, o a�TON TREATMENT PLANT EXPAN��ON - . ' t l i i 0 1 ; \\ & c:P/://I ‘ -3 1 \ • \ , ' 1 OA \ // C.1 \\ I/ • \ 'i 11 \. Nos.......... -1\1� • T OysT \N. ` \ ;. • 'p P-1 DRAINAGE CHA::NE.:. \ \\ \ C. s DIGESTERS \\ 0 100 200 400r \ 404, .-.Is, / ' \ \\ GRAVI•:'% � '0 ' ��a� Gl CX VERS .-ii7�.'(?r? \\\\ SCALE IN FEET I i O • t '..._"� �' -'r -��Ii,TER 1 'Li , III • \\ \....N. \ 101 \\\\ G S 1 /-.j ...LE::: :..LE::_ .n \ \ • � JI F OVERY; 1 O©.-3t 0 k. L_--��^S DISSOLVE) a:a I -i-^\t \ \ / �'_ STORA=E FLO:ATI01 *, I y �� „t \ \ \ \\ w °•. R4COVEAY �'� \t\t t �?' p\ \ \ / �' t \ to ttttl�. :tu.. • t\\ a `` / t t t A \11t,t��"tt ,• 1\\ I \ t 11\f T \\/ 1L\ s t 'I l. � It%t t'� motA 1 t\\ 1 \. 4 < V ® \ o \/� ` , , 0 1 \\\ 8 PHY 11\1 i ;tr.- - \ t : 1'111PG s slid' \lU t.'��'��'�'tit �� , \\ ep b.: yr,A9tY -if _ % ° \\ ,,,.\ „.. ...."......„..... , - `•'!"4,1. stql- 00000,16 C2)..0.0,,,10/1_,, t.....1 1,,,„r ,c,„ ,; .... 0 • \ fcp Cb.. S R C \ C/�,t\qEt • • �lz�4D `:."'ATM \ N . . CHLORINE DLI'P":µ7,:li*Gt STORAGE SPURS i '` J LEGC!tD / . r--.1 PHASE I • • / PHASE II \ ' / µpf �/ ' Y G� FUTUREL__J OF4. , + �s: ° THE CITY OF RENTON � MUNICIPAL BUILDING 200 MILL AVE. SO. FdE1VTON,WASH. 98055 p M=M = BARBARA' Y. SHINPOCH, MAYOR ® LAND USE HEARING EXAMINE/ • o P FRED J. KAUFMAN. 235-2593 1 TF0 SEP-c ' September 16, 1981 r' •. 'G' v Mr. Raymond Drebin, Supervisor Right-of-Way and Property Metro • Exchange Building 821 Second Avenue Seattle, WA 98104 _- RE: File No. SP-065-81 ; Request for Reconsideration. Dear Mr. Drebin: • I have reviewed your letter, dated September 10, 1981 , regarding the above entitled matter, and my response follows. As was indicated by your letter, specific information about the required easement will have to be provided by the Public Works Department before said easement can be granted. At the same time, any expansion of the plant beyond the current limits of the protective berm will have a potential impact on the flood stage capacity of that land outside the berm. Expansion plans will be reviewed subject to both federal flood control regulations and local requirements. In addition, it is possible that various common law liabilities may exist if the natural drainage and storm water holding capacity of the land is altered. The permit is subject to the condition that an easement to be further defined by the Department of Public Works is granted by Metro, and that determination stands. . A new appeal period has now been established for this matter to expire on September 30, 1981 . Very truly yours, A.'74S Fred J. Kaufman Hearing Examiner cc: Parties of Record - •• 48, Municipality of Metropolitan mottle KECEiVEd . ® 821 Second Ave.,Seater, O F FNTQ Exchange 96104 fr +sarruG EkA • l SE' j I • September 10 , 1981 ' d� —31466 City of Renton Renton Municipal Building Renton, WA. 98055 Attention: Mr. Fred J. Kaufman Land Use Hearing Examiner • Gentlemen: Renton Treatment Plant Fill Project Your File: No. SP-065-81 Reference is made to the Report and Decision issued by your office in response to the application filed by the Municipal- ity of Metropolitan Seattle. Pursuant to Title IV, Section 3015 of the Renton Municipal Code, Metro is asking for clar- ification of the intent of Condition No. 4 as contained in the Decision conditions . We do not have enough information to grant any easement which might interfere with our future expansion of the Renton Treat- ment Plant. The need to provide the quantity and quality of ' sewage treatment as is determined to be necessary demands that we retain the flexibility to alter or increase existing facil- ities . Metro has demonstrated its willingness to cooperate with the Green River Eastside Watershed Project in conformity with the policies promulgated by the Metropolitan Council and we will do our best to continue in this posture. Our paramount con- cern© however, is the ability to use the Renton Treatment Plant for the most efficient treatment of sewage and we do not want to jeapordize our basic function. Any assistance you may give us to understand Condition 4 will be appreciated. - Very truly yours , • Raymond Drebin, Supervisor Right-of-Way and Property RD:pkd cc: tMr. Boer Blaylock, Associate planner,_ City of Renton r. JoeFernandes Pro ect Ensineer, metro / `�}'.sir_'. p M <-. ..� • .. i. •?. �:,. :A:. "_.f}.ff 4':i T" ��. i;l+fi��f at .`� .. 4.: • G p_o6,s--- / OF R4 o THE CITY OF RENTON © MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON, WASH. 98055 n $ BARBARA Y. SHINPOCH, MAYOR • DELORES A. MEAD 090 CITY CLERK • (206) 235-25( O,9gTFO SEP1°° November. 6, 1981 Municipality of Metropolitan Seattle 821 Second Avenue Seattle, Washington 98104 Attention: Mr. Raymond Drebin Subject: METRO Appeal of Special Permit SP 065-81 Renton Treatment Plant Dear Mr. Drebin: The Renton City Council at its regular meeting of November 2, 1981 concurred in the Planning and Development Committee recommendations, concluding that the Hearing Examiner's September 8, 1980 recommendation Conclusions No. 7 and 8 are erroneous as a matter of law; that the decision be modified by deleting Condition No. 4 and affirming the remainder of the report. If you have further questions regarding the appeal determination, please do not hesitate to contact this office. A copy of the City Council Minutes of November 2, 1981 is enclosed for your information. Yours very truly, CITY OF RENTON Delores A. Mead, C.M.C. City Clerk m cc: Hearing Examiner Mayor Shinpoch Council President Stredicke C\'rL PLANNING AND DEVELOPMENT COMMITTEE COMMITTEE REPORT November 2, 1981 APPEAL BY METRO - SPECIAL PERMIT SP-065-81 (Referred 10-5-81) The Planning and Development Committee has considered the above appeal by Metro and finds that. the Hearing Examiner is in errorin conditioning the granting of the Special Permit upon the execution by Metro of a natural drainage easement since such a requirement is not related to the application presented and is not within the considerations to be made by the Hearing Examiner under Section 4-2303(2) (A) in the granting of a special permit. Therefore, Conclusions No. 7 and 8 of the Hearing Examiner' s report dated September 8, 1981 , are erroneous as a matter of law. The Committee recommends that the City Council modify the decision of the Hearing Examiner by deleting Condition of the decision and, as modified, to affirm. C4C) Randy Rockhill , Chairman Earl Clymer CS)f John Reed RENTON CITY COUNCIL Regular Meeting November 2 , 1981 Municipal Building Monday, 8: 00 P.M. Council Chambers MINUTES CALL TO ORDER Mayor Barbara Y. Shinpoch led the Pledge of Allegiance to the flag and called the meeting of the Renton City Council to order. ROLL CALL OF RICHARD M. STREDICKE, Council President; JOHN W. REED, THOMAS COUNCIL W. TRIM, EARL H. CLYMER, ROBERT J. HUGHES, RANDALL ROCKHILL. MOVED BY TRIMM, SECOND CLYMER, EXCUSE ABSENT COUNCILMAN CHARLES F. SHANE. CARRIED. CITY OFFICIALS BARBARA Y. SHINPOCH, Mayor; LAWRENCE J. WARREN, City Attorney; IN ATTENDANCE DEL MEAD, City Clerk; MICHAEL PARNESS, Administrative Assistant; WILLIAM E. BENNETT, Acting Finance Director; LT. RAY CALDWELL, Police Department; MAXINE MOTOR, Deputy City Clerk/Recorder. MINUTE APPROVAL MOVED BY STREDICKE, SECOND CLYMER, APPROVE COUNCIL MINUTES OF OCTOBER 26, 1981. Councilman Reed requested correction Page 3, Paragraph 4: (Street Resurfacing), Drains chipped, but manhole covers not raised. MOTION CARRIED. AUDIENCE COMMENT Raymond Drebin, 821 2nd Ave. , Seattle, representing the Municipality METRO Appeal of Metropolitan Seattle, requested the Planning and Development of Special Permit Committee report be presented. MOVED BY ROCKHILL, SECOND CLYMER, SP-065-81 (Fill) SUSPEND RULES AND ADVANCE TO PLANNING AND DEVELOPMENT COMMITTEE Renton Treatment REPORT, AGENDA ITEM 7. CARRIED. The Planning and Development Plant Committee report noted review of the Special Permit SP-065-81 for the Renton Treatment Plant at 1200 Monster Road to preload seven acres with 126,000 cu. yds. fill materials to support a future building program to increase the capacity of the existing sewage treatment plant. The Land Use Hearing Examiner Fred Kaufman, on 9/8/81 , recommended approval with conditions. METRO requested reconsideration of Condition 4 contained in the 9/8/81 Examiner decision, which was upheld by the Examiner 9/16/81. METRO filed appeal of requirement for easement conveyance for natural drainage. The Planning and Development Committee report found the Examiner in error in conditioning the granting of the Special Permit upon the execution by Metro of a natural drainage easement, since such requirement is not related to the application presented and is not within considerations under Code Section 4-2303(2) (A) in grant- ing a Special Permit. The Committee report concluded that the Hearing Examiner's Conclusions No. 7 and 8 are erroneous as a matter of law. The committee recommended the decision be modified by deleting Condition No.4 and affirming report. MOVED CLYMER, SECONE ROCKHILL, CONCUR IN THE PLANNING AND DEVELOPMENT REPORT. Upon inquiry by Council President Stredicke, Committee Chairman Rockhill explained the fill permit was requested entirely within the berm at the treatment plant site. MOTION CARRIED. CORRESPONDENCE Letter from Mayor Shinpoch explained potential problem; an area Proposed Appeal church has preliminary plans to construct a facility adjacent to of Fire Code their existing building. The Fire Marshall has informed the Decision church authorities that their proposal is unacceptable without extensive protection to the existing structure. The minister has sought an appeal of the decision; however, specific plans have not been submitted; hence a specific denial has not occurred. The Fire Code allows for appeal of administrative decision via a Board of Appeals to be comprised of five members "qualified by training and experience to pass upon pertinent matters." The Mayor's letter expressed opinion the Board of Adjustment, nor the Hearing Examin meet these requirements and an Appeals Board does not exist. Th letter stated willingness to work with Council to resolve dilema and suggested referral to the Public Safety Committee, urging a early meeting to study the issue and make recommendation. Sam Harvey, 1171 Camas Ave. NE, Minister of Calvary Baptist Ch explained his opposition to Fire Dept. interpretation of Fire Renton City Council 11/2/81 Page 2 Correspondence - Continued Proposed Appeal requiring installation of sprinkler system in the old building Continued as well as new at a cost of $45,000; that the congregation had voted to appeal; noting problem in proceeding with plans. Mayor Shinpoch noted Board of Appeals in Tukwila as possible solution. MOVED BY TRIMM, SECOND HUGHES, REFER MATTER TO PUBLIC SAFETY COMMITTEE. Rev. Harvey noted receipt of •letter from the City's Fire Marshall stating proposed rejection. MOTION CARRIED. CONSENT AGENDA The following items are adopted in one motion which follows those business matters included. Data Processing Letter from City Clerk reported seven bids received at the 10/26/81 Bid Opening bid opening for Electronic Data Processing System. See attached tabulation. Refer bids to the Ways and Means Committee. Damages Claim Claim for Damages was filed by Mary Baima Brown, 500 Burnett Ave. S, in amount of $106.85 for water damage to basement bedroom, alleging defective storm sewer line. Refer to City Attorney and Insurance Carrier. Court Case Court Case was filed by Metzdorf Restaurants, Inc. and Tony. Go's Tony Go's Inc. Inc. vs. the City and Reiniga Corporation (Sunset Plaza Shopping Flood Damage Center) in the amount of $250,000 for flood damage, alleging negli- #81-2-15462-0 gence in drainage system. Refer to City Attorney. Court Case Court Case was filed, by Bellco Electric & Supply, Inc. vs. Jack Robert Taylor Benaroya Co. and the City in amount of $1,164.26 for personal and Driver auto damage, alleging failure to provide adequate warning at the termination of Valley Parkway near 180th located in Tukwila. Refer to City Attorney. Appeal of Appeal was filed by Dean W. Bitney, Leisure Estates, of Hearing Bitney Short Plat Examiner's decision of 10/14/81 regarding Bitney Short Plat SP 074- SP 074-81 and 81 and Waiver W-075-81; property located on the west side of W 075-81 Union Ave. SE, adjacent to the South Annex of Leisure Estates Mobile Home Park. The Land Use Hearing Examiner recommended approval of short plat with conditions and denial of waiver. Refer to the Planning and Development Committee. Consent Agenda MOVED BY STREDICKE, SECOND CLYMER, ADOPT THE CONSENT AGENDA AS Approval PRESENTED. CARRIED. Student Observers Mayor Shinpoch welcomed students from Miss Oiler's Government Class. OLD BUSINESS Public Safety Committee Report was presented by Committee Chairman Public Safety Hughes regarding parking violations at city parks, main problem Committee areas being Lake Washington Beach Park and Cedar River Trail Park. Parking The infractions, such as parking in prohibited areas blocking Violations in traffic and obstructing emergency vehicle movement, have City Parks resulted in damage to park proerty. The committee recommended that parking fines for park property be increased to $25 and that this matter be referred to the Ways and Means Committee for proper legislation. MOVED BY HUGHES, SECOND ROCKHILL CONCUR IN COMMITTEE REPORT. Councilman Reed inquired re automobiles parking in boat trailer stalls. Discussion ensued re seasonal need for trailer park- ing;and upon inquiry, Police Lt. Caldwell advised common sense is used in the enforcement. MOTION CARRIED. Council President Stredicke requested his NO vote be recorded. \lities Utilities Committee Chairman Clymer submitted committee report '\ittee regarding the Rolling Hills sanitary sewer trunk line break and 'ng Hills recommended concurrence in the Public Works Department's recom- `ry Sewer mendation to proceed on an emergency basis to repair the line. dine Break The Committee further recommended acceptance of the bid supplied by Frank Coluccio Construction. MOVED BY CLYMER, SECOND ROCKHILL, CONCUR IN COMMITTEE REPORT. CARRIED. 0 3e j I RENTON CITY COUNCIL Regular Meeting October 5, 1981 Municipal Building Monday, 8 :00 P.M. Council Chambers MINUTES CALL TO ORDER Mayor Barbara Y. Shinpoch led the Pledge of Allegiance to the flag and called the meeting of the Renton City Council to order. ROLL CALL OF RICHARD M. STREDICKE, Council President; RANDALL ROCKHILL, COUNCIL ROBERT J. HUGHES, EARL H. CLYMER, THOMAS W. .TRIMM AND JOHN W. REED. Absent: CHARLES F. SHANE. CITY OFFICIALS BARBARA Y. SHINPOCH, Mayor; LAWRENCE WARREN, City Attorney; DEL IN ATTENDANCE MEAD, City Clerk; LT. D. PERSSON, Police Department; MICHAEL PARNESS, Administrative Assistant; M. MOTOR, Deputy Clerk/Recorder. MINUTE APPROVAL Minutes of Council Meeting of September 28, 1981: Addition to Second Item of CONSENT AGENDA re LID #314: "There is no.compensa- tion for the property as the benefit exceeds the value of the property given. " (Per City Attorney and Public Works Dept.) MOVED BY STREDICKE, SECOND HUGHES, APPROVE COUNCIL MINUTES OF SEPTEMBER 28, 1981. CARRIED. CONSENT AGENDA The following items are adopted by one motion which follows the business matters included: Fund Transfer Letter from the Finance Department requested a resolution to . for 2% Salary and transfer funds from the Contingency Fund to various tax supported Housekeeping funds for the 2% salary increase effective 7/1/81 and other house- keeping items for incorporation into the 1982 Preliminary Budget for 1981 information. Refer to Ways and Means Committee. LID 41325 Letter from Public Works Department, Design Division, requested Preliminary date of 11/16/81 be set for Public Hearing on LID #325 for the Assessment Roll construction of curbs, gutters, sidewalks, watermain, street $581,425.00 lights and sanitary sewers in area south of Valley General Hospital Public Hearing and east of SR 167. Petition was filed by Daryl Connell and was 11/16/81 certified as 100% of property owners within the boundary of the Davis Ave. South proposed LID by the Public Works Department. Refer to Ways and Means Committee for resolution setting hearing date. Primary Election Letter from City Clerk Mead reported canvassed results of 9/15/81 Canvas Results Primary Election from King County Election Division for City Council Position No. 3: Warren C. Gonnason 644 Votes (Nominated); Paul Maxin 534 Votes; John W. Reed 1,133 Votes (Nominated to appear on General Election Ballot 11/3/81). Information. Metro Appeal ,Appeal has been filed by Metro (Municipality of Metropolitan Special Permit Seattle) of the Land Use Hearing Examiner's recommendation of SP-065-81 9/29/81 re Renton Treatment Plan fill project Special Permit No. SP 065-81. The Examiner recommended approval with conditions. Refer to Planning and Development Committee. • Damages Claim Claim for Damages was filed by Bill C. Arrowood, 118 NE 125th, Seattle, alleged loss of cowboy boots while in jail; claim filed in . amount of $71. Refer to the City Attorney and Insurance Carrier. Consent Agenda MOVED BY STREDICKE, SECOND CLYMER, ADOPT ABOVE PORTION OF THE Adopted CONSENT AGENDA AND THE FOLLOWING ITEMS BE CONSIDERED SEPARATELY • (Items 5.b. , 5.e. and 5.g.). MOTION CARRIED. Garbage Collection Letter from the Acting Public Works Director Richard Houghton Call for Bids recommended Call for Bid for the City's garbage collection and the date of 1/21/82 be set for bid opening. Councilman Stredicke inquired re Utilities Committee report and Mayor Shinpoch advised the matter had been referred from committee. MOVED BY STREDICKE, SECOND CLYMER, CONCUR WITH THE PUBLIC WORKS DEPARTMENT RECOMMENDA- TION AND CALL FOR BIDS ON GARBAGE COLLECTION. CARRIED. nton City Council - /5/81 Page 2 RRESPONDENCE AND CURRENT BUSINESS - Continued .ffany Park Letter from the Public Works Department requested transfer of lkway $10,000 from the Burnett Avenue: South Project into Street Mainte- nance for improvements to Tiffany Park Walkway. Refer to Ways and Means Committee for resolution. Council President Stredicke called attention to Council request for cost estimate and use of assistance from civic organizations for the walkway improvements. Councilman Rockhill recalled willingness of area residents to make contributions, noting other walkways also are in need of improve- ments. Mayor Shinpoch indicated agreement. It was MOVED BY STREDICKE, SECOND REED, REFER MATTER TO THE COMMUNITY SERVICES COMMITTEE FOR REPORT. CARRIED. :ewart Rezone Land Use Hearing Examiner recommended 9/15/81 approval with con- ditions and restrictive covenants for the Vincent and Lois Stewart iilding Moratorium Rezone R-067-81 of G to B-1, property located 300 ft. north of inset Lift Station Sunset Blvd. NE on west side of Duvall Ave. NE. Concur and refer to the Ways and Means Committee. Council President Stredicke reported receipt of letter from Acting Public Works Director Houghton concerning his request of 9/28/81 regarding moratorium on area due to capacity of Sunset Lift Station and those hookups- - previously approved. Stredicke reported the letter would be distributed. MOVED BY STREDICKE, SECOND HUGHES, REFER'THE STEWART ' REZONE AND THE PUBLIC WORKS DEPARTMENT LETTER TO THE WAYS AND MEANS COMMITTEE. CARRIED. ells Ave. Bridge Letter from Renton Merchants Association, Toni Nelson, President, thanked Councilman John Reed for his inquiry concerning the Association's opinion of the proposed Wells Ave. Bridge. A poll of the Association members at the 10/1/81 regular meeting revealed a consensus that they did not want the Wells Ave. Bridge widened to a four lanes, fearing it would eventually lead to removal of parking on Wells Ave. in the downtown area and encourage more traffic through downtown wanting to move quickly through. The letter noted the area is already hindered with through traffic which is a detriment to the general business area. MOVED BY REED, SECOND BY STREDICKE, REFER THE MATTER TO THE TRANSPORTATION . COMMITTEE. CARRIED. • LD BUSINESS ommunity Services Community Services Committee Chairman Reed submitted committee ',ommittee report noting preliminary review of the Retrospective Insurance Letrospective Program adopted 6/80. The program represents a change in Insurance Program previous Comprehensive Liability Policies to the extent the City now shares minimal risk with the insurance company and this is an initial savings of approximately $56,000. The report stated additional savings or cost is dependent on total dollars paid by the insurance company on claims against the City; claims are presently the same level as previous years. Full report will be available 1/82. Information. 'lanning and Planning and Development Committee Chairman Rockhill presented )evelopment committee report noting review of the Ralph Evans'• letter.regard- committee ing setbacks and recommended referral to the Planning Commission, Setbacks Ordinance Development Committee presently studying the subject Ralph Evans' Letter of setbacks in general. MOVED BY ROCKHILL, SECOND CLYMER, CONCUR IN RECOMMENDATION. CARRIED. DRDINANCES AND RESOLUTIONS ' Ways and Means Ways and Means Committee Chairman Clymer presented committee Committee report recommending second and final readings of the following Ordinance #3578 ordinances :which had been on first reading 9/28/81: Interim Financing . LID #320 An ordinance was read authorizing the issuance and sale of warrants to be drawn on LID No. 320 providing interim financing for construc- tion of water mains, hydrants and appurtenances in vicinity of NE 27th St. between Edmonds NE and Devils Elbow. MOVED BY CLYMER, • SECOND HUGHES, ADOPT THE ORDINANCE AS READ. ROLL CALL: ALL AYES. MOTION CARRIED: • pF RA,A THE CITY OF RENTON ® Z MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH.98055 n rn BARBARA Y. SHINPOCH, MAYOR • DELORES A. MEAD 09 Oa' CITY CLERK • (206) 235-2500 09gT�D SEPI °��Q October 7, 1981 CERTIFICATE OF MAILING STATE OF WASHINGTON) ss. COUNTY OF KING DELORES A. MEAD, City Clerk of the City of Renton, being first duly sworn on oath, deposes and says that she is a citizen of the United States and a resident of the State of Washington, over the age of 21 and not a party to nor interested in this matter. That on the 7th day of October, 1981, at the hour of 5:00 p.m. , your affiant duly mailed and placed in the United States Post Office at Renton, King County, Washington, by first class mail, to all parties of record, a true and correct NOTICE OF APPEAL OF THE HEARING EXAMINER'S DECISION FILED BY MUNICIPALITY OF METROPOLITAN SEATTLE, METRO, RENTON TREATMENT PLANT.. Special Permit SP-064-81. /Ze'le't-e Tiee? Delores A. Mead, City Cler SUBSCRIBED AND SWORN TO BEFORE me this 7th day of October, 1981. s.(Th �c c Notary Public ini and for the State of Washington, residing in King County OF Re A. . o THE CITY OF RENTON `$ ® Z MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH. 98055 n rn BARBARA Y. SHINPOCH, MAYOR • DELORES A. MEAD 090 CITY CLERK • (206) 235-250 9 GIA gTFo SEPS October 7, 1981 APPEAL FILED BY MUNICIPALITY OF METROPOLITAN SEATTLE, METRO SPECIAL PERMIT SP-065-81; RENTON TREATMENT PLANT: 1200 MONSTER ROAD To Parties of Record: Pursuant to Title 4, Chapter 30, City Code, written appeal of Land Use Hearing Examiner's decision has been filed with the City Clerk, along with the proper fee of $25.00. NOTICE IS HEREBY. GIVEN that the written appeal and other pertinent documents will be reviewed by the Council's Planning and Development Committee and will be considered by the City Council when the matter is reported out of Committee. Please contact the Council Secretary at 235-2586 for date and time of the committee and council meetings, should you desire to attend. Yours very truly, CITY OF RENTON Delores A. Mead, C.M.C. City Clerk DM:gh 111 For se By City Clerk's Office Only A. I . # AGENDA ITEM RENTON CITY COUNCIL MEETING SUBMITTING Dept./Div./Bd./Comm. City Clerk's Office For Agenda Of October 5, 1981 (Meeting Date) Staff Contact Delores A. Mead, City Clerk (Name) Agenda Status: SUBJECT: Appeal of Hearing Examiner's Consent Decision: Metro, Renton Treatment Plant Public Hearing Correspondence Fill Project SP 065-81 Ordinance/Resolution Old Business Exhibits: (Legal Descr. , Maps, Etc. )Attach New Business Study Session A. Appeal Other B. Hearing Examiner's Decision 9/29/81 C. City Clerk's Letter Approval : Legal Dept. Yes No N/AX COUNCIL ACTION RECOMMENDED: Finance Dept. Yes No. N/A X Refer to Planning & Development Committee Other Clearance FISCAL IMPACT:. Expenditure Required $ Amount $ Appropriation- Budgeted Transfer Required SUMMARY (Background. information, prior action and effect of implementation) (Attach additional pages if necessary. ) Appeal filed by Raymond Drebin, Supervisor Righhof-Way and Property for METRO, received September 29, 1981. PARTIES OF RECORD/INTERESTED CITIZENS TO BE CONTACTED: SUBMIT THIS COPY TO CITY CLERK BY NOON ON THURSDAY WITH DOCUMENTATION. jmE-r - oMunicipality of Metropolitan Seattle ti`�212�29. 7 Exchange Bldg. • 821 Second Ave.,Seattle,Washington 98104 S E P 198 RI RECEIVED CITY of RENTON September 28 , 1981 MRK'S OFFICE `/4915livti4'y0 The Honorable Barbara Y. Shinpoch, Mayor and Honorable Members of the Renton City Council Municipal Building 200 Mill Avenue South Renton, WA 98055 Dear Councilmembers ': Renton Treatment Plant Fill Project Your File: No. SP-065-81 By this letter,. the Municipality of Metropolitan Seattle, Metro, is respectfully appealing to the Renton City Council under the terms of Title IV, Section 3016, for: reconsidera- tion of Item 4 of the conditions contained in the Decision dated September 8 , 1981. Metro appealed to Mr. Fred J. Kaufman, the Land Use Hearing Examiner by letter dated September 10 , 1981, and was informed by letter dated September 16 , 1981, that the requirement to grant an ease- ment to b.e further defined by the Department of Public Works stands . The original application . by Metro was for the right to preload approximately 7 acres within the existing berm at the Renton Sewage Treatment Plant with 126 ,000 cu. yds . , of fill material. The fill is necessary to support future improvements to be constructed by Metro to provide additional sewage treatment facilities . At some in the future, it will be necessary for Metro to apply to the City of Renton for the right to place additional fill and install additional sewage treatment facilities outside the existing berm. These improvements are a part of the Renton Treatment Plant expan- sion studies , copies of which have previously been furnished to the City of Renton. The wording of Item 4 under Decision in the original Report and Decision was too vague to be understandable and the answer to our request for consideration does not rectify the situation. A condition which demands that we grant an easement to be further defined at a later date is one which If The Honorable Barbara Y. Shinpoch, Mayor and Honorable Members of the Renton City Council September. 28, 1981 Page Two . we cannot ask the Metropolitan Council to accept.., Theo- retically, Metro might be forced to grant an easement which would be' completely' at odds with our development plans . We are respectfully' requesting that the original Permit to allow the 126,000 cu. yds of fill to be placed within the existing berm be granted. We further suggest that a re- quirement be included which states that any future plans to increase the treatment facilities outside the existing berm, be coordinated with' the City of Renton before they are finalized. Finally, Metro wishes to reaffirm its intention to cooperate with King County and the City of Renton to solve the drain- age problems in thee, area. Certainly, anyone filling or, building in the flood plain will be obligated to satisfy all legal obligations regarding drainage and water run-off. . What must be understood, however, is that only the Metro- politan Council has the authority to convey permanent interests in real property such as easements or fee title. Any conveyance of such interests can only occur when the members of the .Counil' are aware of what they are conveying and are convinced there are no deleterious affects occasioned by the conveyance. For these reasons, Metro is respectfully requesting the Renton City Council' to remove the condition- to grant the easement. Thank you for your consideration in this matter. Very truly yours , Raymond Drebin, Supervisor Right-of-Way and Property RD:pkd CITY OF RENTON No. 19996 FINANCE DEPARTMENT RENTON, WASHINGTON 98055 19 C,�/ RECEIVED OF --1('r .6Q1 la , L) _ TOTAL Q O -GWEN E. MARSHALL FINANCE DIRECTOR BY (1LO September 29, 1981 OFFICE OF THE LAND USE HEARING EXAMINER CITY OF RENTON REPORT AND DECISION . APPLICANT: I Municipality of Metropolitan Seattle FILE NO. SP-065-8 LOCATION: 1200 Monster Road. SUMMARY OF REQUEST: The applicant seeks a special permit approval to preload the subject property (126,000 cubic yards) for eight secondary clarifiers, a new aeration structure, and a primary sedimentation structure to increase the capacity of the existing Renton Treatment Plant. SUMMARY OF ACTION: Planning Department Recommendation: Approval with conditions. Hearing Examiner Decision: Approval with conditions. PLANNING DEPARTMENT The Planning Department preliminary report was received by the REPORT: Examiner on August 19, 1981 . PUBLIC HEARING: After reviewing the Planning Department report, examining available information on file with the application, and field checking the property and surrounding area, the Examiner conducted a public hearing on the subject as follows: The hearing was opened on August 25, 1981 at 9:05 a.m. in the Council Chambers of the Rento Municipal Building. Parties wishing to testify were affirmed by the Examiner. It was reported that the Hearing. Examiner and the applicant had received and reviewed the Planning Department preliminary report. Roger Blaylock, Associate Planner, presented the report, and entered the following exhibits: into the record: Exhibit #1 : Application File containing Planning Department report and other pertinent documents Exhibit #2: Vicinity Map Exhibit #3: Site Plan Responding to the Examiner's inquiry regarding whether the existing "G" zoning on the site would permit construction or if a rezone to public use would be required, Mr. Blaylock indicated that the matter would be researched,..and he suggested that approval of the fill permit could be conditioned upon future site approval which would require either applicatio for conditional use permit for the specific use or a rezone. Mr. Blaylock discussed comments contained in Section L.4 of the staff report submitted by the Engineering Division to require retention of the area east and north of the existing berm in its natural state, granting of a drainage easement over that area, and dedication to the city of property required for the P-1 Channel . He noted that a disagreement exists between the applicant and city staff regarding the condition , but the city is concerned the because construction of the P-1 channel is necessary, it must be completed in a timely mann The Examiner requested Mr. Blaylock to indicate the property lines of the site and the location where the P-1 Channel would cross the Metro property. Mr. Blaylock designated a small portion of property on the northeast corner of the site. The Examiner requested testimony by the applicant. Responding was: Raymond Drebin Metro 821 2nd Avenue Seattle, WA 98104 • Mr. Drebin, Right of Way and Property Supervisor, requested clarification of the Examiner's previously stated concern regarding requirement for a conditional use permit or rezone of the property. The ExaminerEindicated that the matter would be researched by the Planning Department. Mr. Drebin advised that a conditional use permit had been obtained from the city in 1961 for the purpose of construction of the Renton treatment plant which included SP-065-81 Page Two all future phases. He indicated a desire to conform to the city' s regulations, but to require other action not under the aura, of the original use permit approval would cause a hardship for Metro. Mr. Drebin advised that upon acquisition of additional property arounc the facility, the site boundaries had changed from the existing boundaries of the Renton treatment plant to the new boundaries of the drainage channel as it was established in 1971 He noted that the property was obtained by Metro both for purposes of future expansion and because the seller, Burlington Northern, was unwilling to grant the P-1 Channel route because development of that property would not then be possible and it would remain unused. He stated that Metro has always been very supportive of the construction of the P-1 Channel but the current application is for purposes of filling within the existing berm area which should not have an effect either on the channel or the City of Renton. Mr. Drebin noted that the current phase of construction for secondary structures in the southeast corner and a small building in the center of the plat are located within the confines of the existing berm, and expansion outside of that area will occur at a later date. Mr. Drebin submitted the following exhibit into the record: Exhibit #4: Drawing of Proposed Future Expansion Mr. Drebin explained the process of conveyance of property by the Metro Council , noting the existing uncertainty of the location of the alignment of the channel . He added that if the actual alignment were finalized and legal descriptions made available, the matter could be reviewed by the Metro Council , but at the current time, easements cannot be granted because of Metro's unwillingness to obligate themselves to something that cannot be fulfilled at a later date. He suggested that the fill permit be approved at this time, and negotiations then commence between the city, King County and Metro to resolve the specific location of necessary easements and dedications for the channel . The' Examiner requested testimony in support or opposition to the proposal . There was no response. He then requested questions from the audience. Responding was: Versie Vaupel 400 Cedar Avenue S. Renton, WA 98055 Mrs. Vaupel requested clarification of the extent of the fill project consisting of 126,000 cubic yards, and inquired if it would cover the entire seven acre site. The Examiner referred to the site map, Exhibit #3, noting that the red cross-hatched areas will be filled. Mr. Blaylock further clarified that there is a site elevation differential of from 12 to 15 feet and the areas designated in red would be raised to the existing plain of the treatment plant. Responding to Mrs. Vaupel 's inquiry regarding the level of the remainder of the property, Mr. Blaylock stated that the rest of the undeveloped land and the land inside the dike is down to elevations of 10 to 13 feet above sea level , and the elevation of the developed portion is at approximately 26 feet. The Examiner inquired if the borrow pit will be restored to useable contours or left as a ground pit. Responding wa Joe Fernandes Metro 821 2nd Avenue Seattle, WA 98104 Mr. Fernandes, Consulting Supervisor for Metro, stated that use of the borrow pit is yet indefinite, but it will be sloped, hydroseeded, and landscaped with shrubs and trees to restore it to a more acceptable facility than currently exists. Responding to the Examiner's request for final comments, Mr. Blaylock modified Section L.4 of the report, and stated that the department would have no objection to conditioning approval by the Hearing Examiner to allow Metro, King County and the City of Renton to negotiate the easements and right-of-ways necessary for the P-1 Channel alignment. Since there were no further comments, the hearing regarding SP-065-81 was closed by the Examiner at 9:40 a.m. FINDINGS, CONCLUSIONS & RECOMMENDATIONS: Having reviewed the record in this matter, the Examiner now makes and enters the following: FINDINGS: 1 . The request is for approval of a special permit to allow filling and grading with approximately 126,000 cubic yards of material to allow construction of new structures at the Metro Renton Treatment Plant. 2. The application file containing the application, SEPA documentation, the Planning Depart ment report, and other pertinent documents was entered into the record as Exhibit #1 . SP-065-81 Page Three 3. Pursuant to the City of Renton's Environmental Ordinance and the State Environmental Policy Act of 1971 , R.C.W. 43.21 .C. , as amended, a Declaration of Non-significance has been issued for the subject proposal by Metro, the lead agency. 4. Plans for the proposal have been reviewed by all City departments affected by the impac of this development. 5. There was no opposition to the proposal expressed. 6. All existing utilities are available and in close proximity. 7. The subject property is located in the vicinity of 1200 Monster Road. The site is rela tively level with some topographic relief in the west central and northeasterly portion of the site. An existing berm protects the subject property from potential flooding. The berm is located along the north and east sides. 8. The applicant proposes preloading the site for purposes of expanding the existing sew- age treatment plant. Portions of the site are at a lower elevation than the existing site, and Metro requires the elevations across the site to be equal . 9. The applicant proposes to utilize material from a borrow pit located on site but may no be able to accomplish that objective and may have to resort to importing material to th, site. Approximately 5,000 truck trips will be necessary to import the 126,000 cubic yards of material . 10. The Comprehensive Plan designates the area in which the subject property is located as suitable for the development of public and quasi-public uses. 11 . The subject site is currently zoned G (General ; Single Family Residential ; minimum lot size - 35,000 sq. ft. ) . The G zone will not permit the expansion of the treatment plant. 12. The applicant indicated that a conditional use permit to allow the current plant and future additions was granted in 1961 . The applicant failed to produce documentation of the permit. 13. The City requested that the applicant dedicate portions of the northeast corner of the subject site for use by King County in the proposed construction of the P-1 Channel . The applicant indicated that all conveyances of property by Metro must be approved by the Metro Council . The exact legal description of the property would have to be pro- vided. 14. The City further requested drainage easements along the north and east side of the sub- ject site. As in the dedication, the Metro Council must approve _ all such legal convey. ances of rights pertaining to Metro' s property. The applicant indicated that such easements may interfere with proposed expansion plans north of the Metro berm. 15. The area outside of the berm is to remain in its natural state according to the Public Works Department. This would accommodate natural drainage in accordance with the above drainage easement. 16. If fill must be imported to the subject site, the traffic generated will have an impact on the roads in the area; and the Police Department recommended restrictions on hours of operation and the requirement of route posting and the posting of a bond to permit City crews to clear debris from the roads. 17. There are a number of uses in the vicinity surrounding the subject site including the Earlington Golf Course, which is the site of a potential industrial park, and the Longacres race track south of the site. A mixture of commercial and industrial uses are located east and south of the site. CONCLUSIONS: 1 . The special permit to allow fill and grade of property to be used for the expansion of the Metro Renton Treatment Plan appears to serve the public use and interest. 2. The applicant initially proposes to acquire the fill material from a borrow pit located on site; and, therefore, there would be little or no interference with traffic in the area. 3. Importation of fill would require approximately 5,000 trips by large trucks, which would interfere with the heavy traffic in the area and potentially conflict with traf- fic generated by the Longacres Race Track. In order to forestall interference with SP-065-81 Page 'Four the traffic, if importation of material should be required, a limitation on days and hours of truck travel would be in order. Since the area is industrial in nature, the hours of operation could occur as early as 6:30 a.m. but should not extend past 2:30 p.m. so that there is no interference with the afternoon traffic in the area. 4. The accumulation of debris must be removed by the contractor but, upon failure to properly remove same, the City must be in the position to clear roads to maintain safety; and, therefore, the applicant should post a bond to permit City crews to clear the roads upon determination of the Police or Public Works Department. 5. The route selection should be approved by the Police and Public Works Departments. 6. No hauling should occur on weekends because inspection and clean up is not possible at that time. 7. The creation of an easement for storm water flow required for flood control purposes will have to be executed, and Metro will have to provide same. Metro cannot be in the position of jeopardizing flood control measures in the Valley nor can it enhance the damage potential due to its expanding operations. An easement will , therefore, be required as further specified by the Public Works Department prior to the issuance of the first annual license. 8. The Metro Council must approve any transfer of property for the use of the P-1 Channel , and the specific route must be defined so that Metro can work with other governmental agencies to protect the Green River Valley from flooding. DECISION: The special permit, for fill and grade is approved subject to the following conditions: 1 . The applicant posts a cash bond in the amount of $3,000, (three thousand dollars) to allow City crews to clear the streets of debris generated by the subject operation. 2. The hours and day of operation shall be limited to Monday through Friday from 6:30 a.m. to 2:30 p.m. 3. The truck route shall be approved by the Police and Public Works Departments and posted accordingly. 4. An easement for natural drainage be conveyed to the City. 5. The applicant works with the sponsors of the Green River Eastside Watershed Project to define what portions of Metro' s property is required for the project and to determine a satisfactory means of accomplishing a transfer o,f said property. 6. The applicant demonstrates that the land is zoned or otherwise regulated to permit the expansion of the treatment plant. ORDERED THIS 8th day of September, 1981 . Fred J. Kaufm Land Use. Hearing Examiner TRANSMITTED THIS 8th day of September, 1981 , by Affidavit of Mailing to the parties of record: - Raymond Drebin, Metro, 821 2nd Avenue, Seattle, WA 98104 Joe Fernandes, Metro, 821 2nd Avenue, Seattle, WA 98104 Versie Vaupel , 400 Cedar Avenue S. , Renton, WA 98055 Larry Brown, Western Pacific Properties, Inc. , : 13975 Interurban Ave Seattle, WA 98168 TRANSMITTED THIS 8th day of September, 1981 , to the following: Mayor Barbara Y. Shinpoch Councilman Richard M. Stredicke Richard Houghton, Acting Public Works Director SP-065-81 Page/Five David Clemens, Acting Planning Director Michael Porter, Planning Commission Chairman Barbara Schellert, Planning Commissioner Ron Nelson, Building Director Lawrence J. Warren, City Attorney Pursuant to Title IV, Section 3015 of the City's Code, request for reconsideration must be filed in writing on or before September 22, 1981 . Any aggrieved person feeling that the decision of the Examiner is based on erroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence which could not be reasonably available at the prior hearing may make a written request for review by the Examiner within fourteen (14) days from the date of the Examiner's decision. This request shall set forth the specific errors relied upon by such appellant, and the Examiner may, after review of the record, take further action as he deems proper. An appeal to the City Council is governed by Title IV, Section 3016, which requires that such appeal be filed with the City Clerk accompanying a filing fee of $25.00 and meeting other specified requirements. Copies of this ordinance are available for inspection in the Finance Department, first floor of City Hall , or same may be purchased at cost in said department. OF I lv hn . ° THE CITY OF RENTON U Z MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH. 98055 rt, o MMM BARBARA' Y. SHINPOCH, MAYOR • LAND USE HEARING EXAMINER p Q FRED J. KAUFMAN. 235-2593 ITF0 SEP.1E ' September 16, 1981 • Mr. Raymond Drebin, Supervisor Right-of-Way and Property Metro Exchange Building 821 Second Avenue Seattle, WA 98104 RE: File No. SP-065-81 ; Request for Reconsideration. Dear Mr. Drebin: • I have reviewed your letter, dated September 10, 1981 , regarding the above entitled matter, and my response follows. As was indicated by your letter, specific information about the required easement will have to be provided by the Public Works Department before said easement can be granted. At the same time, any expansion of the plant beyond the current limits of the protective berm will have a potential impact on the flood stage capacity of that land outside the berm. Expansion plans will be reviewed subject to both federal flood control regulations and local requirements. In addition, it is possible that various common law liabilities may exist if the natural drainage and storm water holding capacity of the land is altered. The permit is subject to the 'condition that an easement to be further defined by the Department of Public Works is granted by Metro, and that determination stands. • A new appeal period has now been established for this matter to expire on September 30, 1981 . Very truly yours, Fred J. Kaufman Hearing Examiner cc: Parties of Record ET 140 ® Municipality of Metro olitan Seattle RECEI P VEd Lire, OF Exchange Bldg. • 821 Second Ave.,Seattle,Washington 98104 H EARING LREN nA ER c�E v September 10 , 1981 7 8r.� ' ; 81 r10,11r1c', ' , Pti ..,..,4,5,E A City of Renton Renton Municipal Building Renton, WA. 98055 Attention: Mr. Fred J. Kaufman Land Use Hearing Examiner Gentlemen: Renton Treatment Plant Fill Project Your File: No. SP-065-81 Reference is made to the Report and Decision issued by your office in response to the application filed by the Municipal- ity of Metropolitan Seattle. Pursuant to Title IV, Section 3015 of the Renton Municipal Code, Metro is asking for clar- ification of the intent of Condition No. 4 as contained in the Decision conditions . We do not have enough information to grant any easement which might interfere with our future expansion of the Renton Treat- ment Plant. The need to provide the quantity and quality of sewage treatment as is determined to be necessary demands that we retain the flexibility to alter or increase existing facil- ities . Metro has demonstrated its willingness to cooperate with the Green River Eastside Watershed Project in conformity with the policies promulgated by the Metropolitan Council and we will do our best to continue in this posture. Our paramount con- cern, however, is the ability to use the Renton Treatment Plant for the most efficient treatment of sewage and we do not want to jeapordize our basic function. Any assistance you may give us to understand Condition 4 will be appreciated. Very truly yours, Raymond Drebin, Supervisor Right-of-Way and Property RD:pkd cc: Mr. Roger Blaylock, Associate Planner City of Renton Mr. Joe Fernandes Pro ect En•ineer, 1G1etro ag. 1 mE-rRo „,„Municipality of Metropolitan Seattle �I j®id � �EC- irY °F RANT Exchange Bldg. • 821 Second Ave.,Seattle,Washington 98104 HEARrruG %[Rgir'Nl�r OA September 10 , 1981 �M SEf E98l City of Renton Renton Municipal Building Renton, WA.. 98055 Attention: Mr. Fred J. Kaufman Land Use Hearing Examiner Gentlemen: Renton Treatment Plant Fill Project Your File: No. SP-065-81 Reference is made to the Report and Decision issued by your office in response to the application filed by the Municipal- ity of Metropolitan Seattle. . Pursuant to Title IV, Section 3015 of the Renton Municipal Code, Metro:'-is asking for clar- ification of the intent of Condition No. 4 as contained in the Decision conditions . We do not have enough information to grant any easement which might interfere with our future expansion of the Renton Treat- ment Plant. The need to provide the quantity and quality of sewage treatment as is determined to be necessary demands that we retain the flexibility to alter or increase existing facil- ities . Metro has demonstrated its willingness. .to cooperate with the Green River Eastside Watershed Project in conformity with the policies promulgated by the Metropolitan Council and we will do our best to continue in this posture. Our paramount con- cern, however, is the ability to use the Renton Treatment Plant for the most efficient treatment of sewage and we do not want to jeapordize our basic function. Any assistance you may give us to understand Condition 4 will be appreciated. . . Very truly yours, 1;r"Zi7,4 43/4:71 Raymond Drebin, Supervisor Right-of-Way and Property RD:pkd cc : Mr. Roger Blaylock, Associate 'lanner City of Renton Mr. Joe Fernandes Pro ect En•ineer, I�Metro • AFFIDAVIT OF SERVICE BY MAILING State of Washington) County of King Willis V. Roberts , being first duly sworn, upon oath disposes and states: That on the 8th day of September , 1981 , affiant deposited in the mails of the United States a sealed envelope containing a decision or recommendation with postage prepaid, addressed to the parties of record in the below entitled application or petition. Subscribed and sworn this 8 day of p�S. , 19a/. Notary Public in and for he Stat of Washington, residing a Application, Petition or Case: Municipality of Metropolitan Seattle; SP-065-81 (The m.i.nute4s contain a.tbst o4 the paxti.ez o4 necond. ) /7G'T1-.0 /f OF R 4,4/ /29Cia/,,ve l N THE CITY OF RENTON MUNICIPAL BUILDING 200 MILL AVE. SO. RENTON,WASH. 98055 NIL BARBARA Y. SHINPOCH, MAYOR • PLANNING DEPARTMENT 9A co. 235— 2550 0 9�TEC SEP100 July 15 , 1981 Rodney G. Proctor, Manager Environmental Planning Division Metro 821 Second Avenue; MS-63 Seattle, Washington 98104 RE: PROPOSED DECLARATION OF NON-SIGNIFICANCE FOR RENTON SEWER TREATMENT PLAN SITE STABLIZATION Dear Mr. Proctor: The City of Renton Environmental Review Committee has reviewed your Proposed Declaration of Non-Significance for the site stabilization at the Renton Sewer Treatment Plant. The committee endorses the proposed declaration with the single exception that the question of the conflict between the flood hazard maps provided by HUD and the existing bermed area surrounding the Renton Treatment Plant must be resolved. It is our under- standing that the berms were constructed in 1968 to provide 100 year flood protection for the Sewer Treatment Plant. Assuming this is correct, this committee has no objections to the proposed declaration. Very ruly yo II) ii77((//-1 David R. Clemens Acting Planning Director for the Environmental Review Committee cc : Committee Members mETRoceb /, Municipality of Metropolitan Seattle jut 6 1981 �- r Exchange Bldg. • 821 Second Ave.,Seattle,Washington 98104 ------"----- .-. �,// July 6 , 1981 .\/ijr/N TO: Mr. Roger Blalock, Associate . Planner City of Renton Planning Department Municipal Building 200 Mill Avenue South Renton, Washington 98055 RE: Proposed Declaration of Non-Significance for Renton Sewage Treatment Plant Site Stabilization Enclosed is a copy of a Proposed Declaration of Non-Signi- ficance for the subject project as required by the Washington State Environmental Policy Act of 1971 (RCW 43 . 21C) . Comments are invited and will be received until July 20 , 1981. Written comments should be addressed to : Mr. Rodney G. Proctor, Manager Environmental Planning Division METRO 821 Second Avenue; MS-63 Seattle, WA 98104 Copies of this document may be obtained by visiting Metro at the above address or by calling 447-6613. The comment period for this proposal will expire on July 20 , 1981. I anticipate that we will issue the Final Declaration of Non-Significance on July 24 , 1981. The FDNS will undergo a 15-day appeal period, ending on Aug.ust 7 , 1981. Joe Fernandez (Consultant Supervisor) will be contacting you regarding the submission of permits and scheduling of a hearing date. Very truly yours , Rodney G. Proctor, Manager Environmental Planning Division . RGP :gbj Enclosure fi r:;"r 9 ' O� ENT, kitj • ,45 • co.\,111, • Municipality of 1981 Me ropolitan Seattle ,Ut. 6 Exchange Bldg. 6821 Second Ave., $tle,Washin„ n 98104 /4, G Ds?!'• PROPOSED/ X DECLA_RATION OF "�-- XT c /NON-SIGNIFICANCE • • Action: Site Stabilization at Renton Sewage Treatment Plant . • Description of Proposal : The Renton Sewage Treatment Plant (see map A for site location) has now reached its interim design capacity. Continued population growth in the service area and the desire to improve local water quality conditions now make it necessary to identify alternatives which address expansion of the Renton facility. These questions are now being addressed as • part of the Renton facilities planning process . Regardless of the selected treatment level alternative, some expansion of the Renton Treatment Plant must take place , requiring the site stabilization. The Renton Treatment Plant expansion to 72 mgd is to include the. addition of eight secondary clarifiers located immediately .east of the existing eight secondary clarifiers, an aeration structure located immediately east of the existing aeration structure and' (OV Proponent: Municipality of Metropolitan Seattle (METRO) Location of Proposal: The Renton Sewage Treatment Plant is located' at 1200 Monster Road in the City of Renton (see map A) . Lead Agency: METRO • - This proposal has been determined to. DaXMlnot have) a . significant adverse impact upon the environment. An EIS • his not) required under RCW 43 . 21C. 030 (2) (c) . . This • decision was made after review by the lead agency of a • completed environmental checklist and other information on file with the lead agency. • Responsible Official: Rodney G. Proctor Position/Title: Manager/Environmental Planning Division Date: - July 6 , 1981 Signature : ! • • Environmental Planning Division c:�' • Description of Proposal continued possibly a primary sedimentation structure located to the north of- the primary treatment structure- (see map B) . • The portion of the expansion addressed by this environmental action includes the site stabilization for the proposed secondary clari- fiers and the primary sedimentation- structure. The site stabili- - zation project is presently proceeding on the assumption that approximately 106 ,000 cubic yards of preload. material will be acquired from Borrow Site "A" (see map B) . An additional 20 ,000 cubic yards of preload material will be acquired from outside the treatment plant site. Borrow Site "A" will be rehabilitated to protect .soils disrupted during the borrow operation. The site .stabilization project will begin September 19 , 1981. A second option being considered is acquisition of the .entire • • 126 ,000 cubic yards of preload material from outside the treat- ment plant. Under this option, Borrow Site "A" will not be - . : disturbed. The decision to use Borrow Site "A" or to use material brought in from off-site will be made by the ..contractor and will be based on cost considerations and availability of suitable off-site material. Completion by either option is scheduled for • September 1982 . ETA* " - V- Municipality of Metropolitan Seattle Exchange Bldg. ® 821SecondAve.,Seattle,Washington98104 ENVIRONMENTAL CHECKLIST FORM - - PROPOSED ACTION: Site Stabilization at Renton Sewage Treatment Plant I. BACKGROUND. 1. Name of Proponent Municipality of Metropolitan Seattle (METRO) - 2. Address and Phone Number of Proponent: Exchange Building; 821 Second Avenue; MS-63 Seattle , WA 98118 TELEPHONE: 206/447-6613 3. Date Checklist Submitted July 6 , 1981 4 . Agency Requiring Checklist METRO 5. Name of Proposal, if applicable: _ 6. Nature and Brief Description of the Proposal (in- cluding but not limited to its size, general design elements, and other factors that will give an accurate understanding of its scope and nature) : The Renton Sewage Treatment Plant (see map A for site location) has now reached its interim design capacity. Continued population growth in the service area and the desire to improve local water quality conditions now make it necessary to identify alternatives which ad- dress expansion of the Renton facility. These ques- . tions are now being addressed as part of the Renton facilities planning process . Regardless of the selected treatment level alternative, some expansion of the Renton Treatment Plant must take place , requiring the site stabilization. The Renton Treatment Plant expansion to 72 mgd is to include the addition of eight secondary clarifiers located immediately east of the existing eight secondary clarifiers , an aeration structure located immediately east of the existing aeration structure and possibly - a primary sedimentation structure located to the north of the primary treatment structure (see map B) . (OVER) !:-to,:-'aW I't ti`l Nature and Brief Description continued The portion of the expansion addressed by this environmental action includes the site stabilization for the proposed secondary clari- fiers and the primary sedimentation structure. The site stabili- zation project is presently proceeding on the assumption that approximately 106 ,000 cubic yards of preload material will be acquired from Borrow Site "A" (see map B) . An additional 20 ,000 cubic yards of. preload material will be acquired from outside the treatment plant site. Borrow Site "A" will be rehabilitated to protect soils disrupted during the borrow operation. The site stabilization project will begin September 19 , 1981. A second option being considered is acquisition of .the entire 126 ,000 cubic yards of preload material from outside the treat- ment plant. Under this option, Borrow Site "10' will not be disturbed. The decision to use Borrow Site "A" or to use material brought in from off-site will be made by the contractor and will be based on cost considerations and availability of suitable off-site material. Completion by either option is scheduled for September 1982. • • .. /VIAP A . 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D2AlN5 � PuriP -- '--- ( $LCG. t/0•c47 SD - �t/fit \v,} AEeilT101U _..tilaQ ► sTRIXTURE �.AW - PzbLOAD FoR wEw ._ .3 ?2inARY 11U�1•1 5a[oNDARA? ScDtit.MTAT1o&J • �RPATHE. f 5TRc Tv RE _ .. \ADi11N. 57RvCTURc r1�� aB. r 0 CDI I' ... . _ (a)01CalArnMr.IONSINP” . _ . . _ . ....... - s FtLTe.st. 'ASRtc • 0 J • • . . .. . . _. . .... .....-.. __ .._ _._,. __ SECo�DARY `SEDtrcE-T crrfOnJ • • .Si2vx-ruREE . _ .. _. _ .-. R��Vro�v SEWAGE " R.FATMEA/r- PLAPT . 517E ST,�'sglL! ZAT Io N — • • • 7 . Location of Proposal (describe the physical setting of the proposal, as well as the extent of the land area affected. by any environmental impacts , including any other information • needed to give an accurate understanding of the environ- mental setting of the proposal) : • The Renton Sewage Treatment Plant is located at 1200 Monster • • Road in the City of Renton (see map B) . Preload material will cover approximately 7 acres ' of the treatment plant site (4 .2 . acres for the proposed secondary clarifiers • and 2 . 8acres for' the proposed primary sedimentation structure). • • 8 . Estimated Date for Completion of the Proposal: September 1982 9. List of all Permits , Licenses or Government' Approvals . Required for the Proposal (federal , state and local -- including rezones) : Special Grading Permit and Annual • License (City of Renton) • 10 . Do you have any plans for future additions , expansion, or • further activity related to or connected with this proposal? If yes, explain: Yes. The areas of the Renton Treatment Plant undergoing site stabilization will be used for expansion of the treatment • • facility. Expansion to 72 mgd will include eight secondary clarifiers , a new aeration structure, relocation of a sto.Laye building and possibly a primary sedimentation structure. 11. Do you know of any plans by others which may affect the • property covered by your proposal? If yes, explain: No. • • • • 12 . Attach any other application form that has been completed . regarding the proposal; if none has been completed, but is expected to be filed at some' future date, describe the • • • nature of such application form: • • Application for Special Grading Permit (City of Renton) and • Annual License (City of Renton) will be forthcoming. II. ENVIRONMENTAL IMPACTS (Explanations of all "yes" and "maybe" answers are required. ) . Yes Maybe No 1) Earth. Will the 'proposal result in: a) Unstable earth conditions or in . changes in geologic substructures? X b) Disruptions, displacements, compaction or overcovering of the soil? X c) Change in topography or ground surface relief features? • X • d) The destruction, covering or • modification of any unique geologic- or physical . features? X e). Any increase in wind or water - erosion of soils, either on or .off . • . • the site? X 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 of • any bay, inlet or lake? X • • Explanation: (b&c) The intent of the project is to fill • approximately 126 ;000 cubic yards of preload material - to the sites for proposed secondary clarifiers and the proposed primary sedimentation structure. If all or a. • portion of this material is excavated from Borrow Site "A" (OVER; 2) Air. Will the proposal result in: • a) Air emissions or deterioration of ambient air quality? X - ' . b) The. creation of objectionable odors? . . X • - c) Alteration of air movement, moisture. . . or temperature, or any change in .. • . climate, either locally or regionally? S • . X . Explanation: (a&b) There will be a temporary increase in air emissions and some diesel odors tram construction equipment. No long-term impacts will result. • 1 b&c continued then the topography of the hill will be changed. The topography of the sites intended for stabilization will change slightly, with an elevation increase averaging 10-15 feet. Preloading is designed to consolidate soils where new structures will be built. Soil compaction caused by the movement of construction equipment and by the application of preload material may alter the absorp- tion rate during the construction period. If Borrow Site ''A" is used, the area will be re-sloped at 2 :1 ratio to prevent soil from sloughing. • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Yes Maybe No _ _ 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? X • b) Changes in absorption rates, drainage patterns, or the rate and . • amount of surface water runoff? • X ' c) Alterations to the course .or flow • of flood waters? X d) Change in the amount of surface . _ . water in any water body? • X e) Discharge into surface waters, or in - . any alteration of surface water - • quality, including but not limited to temperature, dissolved oxygen or turbidity? X _ f) Alteration of the direction or rate . . of flow of ground waters? X . . g) Change in . the quantity of ground • - waters, either through direct additions or withdrawals, or . . through interception of an aquifer • by cuts or excavations? X 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 • . water? . , - X . i) Reduction in the amount of water . otherwise available for public . water supplies? • X • Explanation: b) The 'Delia surrounding the treatment plant site provides an excellent barrier to prevent sediment bearing runoff from leaving the site. During . construction, drains located. in the berm (see map B) will be screened with straw bales or sealed off to prevent sediment transfer to local drainages . Filter . . fabric will be installed at Borrow Site "A" and the . (OVER) -_ • • • • • Explanation continued preload site to prevent soil from sloughing over the berm at either area (see map B) . Precautions will be taken during site stabilization work to ensure that the runoff and drainage patterns from the site are not changed. c) A flood hazard analysis performed during the Renton treatment facilities. planning process indicates that the treatment plant • will receive adequate protection from floods. • g) Site preparation may require some dewatering,. which could be accomplished by use of well points or other means available to • the contractor. Groundwater will not be .removed from the site and no impacts are expected to result from any dewatering action. I . • • • • • • • Yes Maybe No 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) ? X • b) Reduction of the numbers of any unique, rare or endangered species • of flora? . X c) Introduction of new species of flora into an area, or in a barrier to the normal replenishment of existing . species? _ X d) Reduction in acreage of any agri- cultural crop? X Explanation: a) Flora present at the preload sites is predominated by native grasses , blackberry, etc. Flora present at Borrow Site "A" is similar, but also includes mature maple, alder and other native deciduous trees. The site stabilization project will result in removal (OVER) 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) ? X b) Reduction of the numbers of any unique, rare or endangered species of fauna? X • c) Introduction of new species of fauna into an area, or result in a barrier to the migration or movement of fauna? X d) Deterioration to existing fish or . wildlife habitat? X Explanation: Although a number of rabbits and other small mammals inhabit the treatment plant property, ample jiabita exists on areas adjacent to the preload sites to ensure that the wildlife population will be accommodated. 4a continued of all vegetation at the preload sites and perhaps a significant portion at Borrow Site "A" if this site is used. The project, however, will include landscaping/vegetation plans to ensure that some habitat is replaced and soils are protected from erosion. Yes Maybe No 6) Noise. Will the proposal increase .' existing noise levels? X Explanation: Noise levels will increase temporarily during construction activities. Standard construction techniques for minimizing noise impacts will be used. The immediate • surrounding area' is zoned industrial and noise impacts should be minimal. Temporary noise levels between 72-94 (OVER) 7) Light and Glare. Will the proposal produce new• light or glare? X Explanation: 8) Land Use. Will the proposal result in the alteration of the present or planned land use of an area? . X Explanation: The proposal may allow some alteration;; of present land use by enabling additional sewerage develop- ment by Metro component agencies . The -proposal would not, however, necessitate any land use changes . Land use changes. • are governed by local. agencies with land use authority. 9) Natural Resources. Will the proposal . result in: a) increase in the rate of use of any natural resources? • X • b) Depletion' of any nonrenewable natural resource? X Explanation: .10) Risk of Upset. Does the proposal involve the risk of an explosion or the release • of hazardous substances (including, but . • not limited to, oil, pesticides, chemicals or radiation) in the event of an accident . or upset conditions? X Explanation: 6 continued dbA can be expected when machinery is operating. To mitigate noise impacts , construction activity shall be restricted to the hours between 8 a.m. and 5 p.m. In the cases of special noise sensitivity, portable noise-reducing barriers shall be used to control noise. • t • Yes Maybe No 11) Population. Will the proposal alter the location, distribution, density, or growth rate of the human population of an area? X Explanation: The project is the first element of plant expansion which would accommodate additional flows into the existing sewage service area, thereby allowing addi- tional development to be served by sewers . However, the location, distribution, density and growth rates are governed by local land use plans and policies . 12). Housing. . Will the proposal affect existing housing, or create a demand for additional housing? X Explanation: See Item 11 13) Transportation/Circulation. Will the proposal result in: • a) Generation of additional vehicular movement? X b) Effects on existing parking facilities or demand for new parking? X c) Impact upon existing transportation . systems? X • d) Alterations to present patterns of circulation or movement of people and/or goods? X e) Alterations to waterborne, rail or air traffic? X f) Increase in traffic hazards to motor vehicles, bicyclists or . pedestrians? X Explanation: (a&b) A minimum of additional traffic may be generated by workers travelling to and from the site during the construction period. If all preload is acquired out- side the site, approximately 6 , 320 roundtrips within a 6-mile radius of the treatment plant will be generated by trucks bringing in preload material. This may result in a slight impact to the existing transportation (OVER) 13 a&b) continued circulation in the immediate area and along Monster Road. Site stabilization for the new secondary clarifiers will require the removal of an existing storage building and parking area. This building and paved area will be relocated elsewhere on the site. f) The possible increase in traffic hazards along Monster Road will be reduced by providing flagmen along the route and posting warning signs as appropriate. Vehicle movement will be limited to daylight hours . Yes Maybe No 14) Public Services. Will the proposal have an effect upon, or result in the need for new or altered governmental services in any of the following areas: a) Fire protection? X b) Police protection? X c) Schools? X d) Parks and other recreational facilities? X e) Maintenance of public facilities, including roads? X f) Other governmental services? X Explanation: 15) Energy. Will the proposal result in: a) Use of substantial amounts of fuel • or energy? X b) Demand upon existing sources of energy, or require the development of new sources of energy? X Explanation: Total fuel consumption by machinery used. at the construction site is estimated at approximately 18 ,000 gallons (gas and diesel) . Total fuel consumption if all preload material is acquired from a site within a 6-mile radius of the sewage treatment plant is estimated at (OVER) 16) Utilities. Will the proposal result in a need for new systems, or alterations to the following utilities? a) Power or natural gas? X b) Communications systems? X c) Water? X d) Sewer or septic tanks? X e) Storm water drainage? X f) Solid waste disposal? X Explanation: 15 a) continued. . . . approximately 36 ,000 gallons (gas and diesel) . This fuel consumption will not be considered significant nor will it result in energy-related impacts . es Maybe No 17) Human Health. Will the proposal result in the creation of any health hazard or potential health hazard (excluding mental health) ? X Explanation : • 18) Aesthetics. Will the proposal result in the obstruction of any scenic vista or view open to the public, or will the • . proposal result in the creation of an aesthetically offensive site open to . . public view? X Explanation: J f sorrow Site "A" is excavated during site • stabilization, some of the excavation may be visible from Mon. ter Road. This area will be re-vegetated in a manner similar to existing flora to minimize aesthetic impact. . uy roseeding will be used to protect exposed slopes from (OVER) 19) Recreation. Will the proposal result in • . an impact upon the quality or quantity • of existing recreational opportunities? X . Explanation: Improved multi-use recreation facilities are being examined during the facilities planning process for expansion of the Renton Sewage Treatment Plant. 20) Archaeological/Historical. Will the proposal result in an alteration of a • • . significant. ar.chaeological or historical site,. structure, object or building? X Explanation: Extensive archaeological/historical investi- . gations have been performed at the Renton Sewage Treatment Plant expansion site. These investigations conducted by • the Office of Public Archaeology revealed no archaeological/ - historical finds . No finds of significance are anticipated (OVER) III. SIGNATURE - • 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 no significance- _ that it might issue in reliance upon this ecklist s ld there be any misrepresentation or lack of f;:,1 i closure my part. Proponent: t) _ Date: L6, 7 .A ( . 18 continued erosion and reduce aesthetic impacts . Recommendations on re-vegetation plans will be prepared by a landscape architect and implemented during the construction period, Borrow Site "A" slopes will be sloped at 2 :1 ratio to prevent erosion. 20 continued at either Borrow Site "A" or the preload sites . If, however, any evidence of archaeological/historical significance is discovered during excavation, all construction activity will be halted until the importance of the find can be evaluated by the State, OFFICE OF THE LAND USE HEARING EXAMINER CITY. OF RENTON REPORT AND DECISION. APPLICANT: Municipality of Metropolitan Seattle FILE NO. SP-065-81 LOCATION: 1200 Monster Road. SUMMARY OF REQUEST: The applicant seeks a special permit approval to preload the subject property (126,000 cubic yards) for eight secondary clarifiers, a new aeration structure, and a primary sedimentation structure to increase the capacity of the existing Renton Treatment Plant. SUMMARY OF ACTION: Planning Department Recommendation: Approval with conditions. Hearing Examiner Decision: Approval with conditions. PLANNING DEPARTMENT The Planning Department preliminary report was received by the REPORT: Examiner on August 19, 1981 . PUBLIC HEARING: After reviewing the Planning Department report, examining available information on file with the application, and field checking the property and surrounding area, the Examiner conducted a public hearing on the subject as follows: The hearing was opened on August 25, 1981 at 9:05 a.m. in the Council Chambers of the Rentoi Municipal Building. Parties wishing to testify were affirmed by the Examiner. It was reported that the Hearing Examiner and the applicant had received and reviewed the Planning Department preliminary report. Roger Blaylock, Associate Planner, presented the report, and entered the following exhibits into the record: • Exhibit #1 : Application File containing Planning Department report and other pertinent documents Exhibit #2: Vicinity Map Exhibit #3: Site Plan Responding to the Examiner's inquiry regarding whether the existing "G" zoning on the site would permit construction or if a rezone to public use would be required, Mr. Blaylock indicated that the matter would be researched, and he suggested that approval of the fill permit could be conditioned upon future site approval which would require either applicatioi for conditional use permit for the specific use or a rezone. Mr. Blaylock discussed comments contained in Section L.4 of the staff report submitted by the Engineering Division to require retention of the area east and north of the existing berm in its natural state, granting of a drainage easement over that area, and dedication to the city of property required for the P-1. Channel . He noted that a disagreement exists between the applicant and city staff regarding the condition, but the city is concerned tha because construction of the P-1 channel is necessary, it must be completed in a timely manni The Examiner requested Mr. Blaylock to indicate the property lines of the site and the location where the P-1 Channel would cross the Metro property. Mr. Blaylock designated a small portion of property on the northeast corner of the site. The Examiner requested testimony by the applicant. Responding was: Raymond Drebin Metro 821 2nd Avenue Seattle, WA 98104 Mr. Drebin, Right of Way and Property Supervisor, requested clarification of the Examiner's previously stated concern regarding requirement for a conditional use permit or rezone of the property. The Examiner indicated that the matter would be researched by the Planning Department. Mr. Drebin advised that a conditional use permit had been obtained from the city in 1961 for the purpose of construction of the Renton treatment plant which included SP-065-81 Page Two all future phases. He indicated.a desire to conform to the city's regulations, but to • require other action not under the aura of the original use permit approval would cause a hardship for Metro. Mr. Drebin advised that upon acquisition of additional property around the facility, the site boundaries had changed from the existing boundaries of the Renton treatment plant to the new boundaries of the drainage channel as it was established in 1971 . He noted that the property was obtained by Metro both for purposes of future expansion and because the seller, Burlington Northern, was unwilling to grant the P-1 Channel route because development of that property would not then be possible and it would remain unused. He stated that Metro has always been very supportive of the construction of the.P-1 Channel , but the current application is for purposes of filling within the existing berm area which should not have an effect either on the channel or the City of Renton. Mr. Drebin noted that the current phase of construction for secondary structures in the southeast corner and a small building in the center of the plat are located within the confines of the existing berm, and expansion outside of that area will occur at a later date. Mr. Drebin submitted the following exhibit into the record: • { Exhibit #4: Drawing of Proposed Future Expansion Mr. Drebin explained the process of conveyance of property by the Metro Council , noting the existing uncertainty of the location of the alignment of the channel . He added that if the actual alignment were finalized and legal descriptions made available, the matter could be reviewed by the Metro Council , but at the current time, easements cannot be granted because of Metro's unwillingness to obligate themselves to something that cannot be fulfilled at a later date. He suggested that the fill permit be approved at this time, and negotiations then commence between the city, King County and Metro to resolve the specific location of necessary easements and dedications for the channel . The Examiner requested testimony in support or opposition to the proposal . There was no response. He then requested questions from the audience. Responding was: Versie Vaupel 400 Cedar Avenue S. Renton, WA 98055 Mrs. Vaupel requested clarification of the extent of the fill project consisting of 126,000 cubic yards, and inquired if it would cover the entire seven acre site. The Examiner referred to the site map, Exhibit #3., noting that the red cross-hatched areas will be filled. Mr. Blaylock further clarified that there is a site elevation differential of from 12 to 15 feet and the areas designated in red would be raised to the existing plain of the treatment plant. Responding to Mrs. Vaupel 's inquiry regarding the level of the remainder of the property, Mr. Blaylock stated that the rest of the undeveloped land and the land inside the dike is down to elevations of 10 to 13 feet above sea level , and the elevation of the developed portion is at approximately 26 feet. The Examiner inquired if the borrow pit will be restored to useable contours or left as a ground pit. Responding was: Joe Fernandes Metro 821 2nd Avenue Seattle, WA 98104 Mr. Fernandes, Consulting Supervisor for Metro, stated that use of the borrow pit is yet indefinite, but it will be sloped, hydroseeded, and landscaped with shrubs and trees to restore it to a more acceptable facility than currently exists. Responding to the Examiner's request for final comments, Mr. Blaylock modified Section L.4 of the report, and stated that the department would have no objection to conditioning approval by. the Hearing Examiner to allow Metro, King County and the City of. Renton to negotiate the easements and right-of-ways necessary for the P-1 Channel .alignment. Since there were no further comments, the hearing regarding SP-065-81 was closed by the Examiner at 9:40 a.m. FINDINGS, CONCLUSIONS & RECOMMENDATIONS: Having reviewed the record in this matter, the Examiner now makes and enters the following: FINDINGS: . 1 . The request is for approval of a special permit to allow filling and grading with approximately 126,000 cubic yards of material to allow construction of new structures at the Metro Renton Treatment Plant. 2. The application file containing the application, SEPA documentation, the Planning Depart- ment report, and other pertinent documents was entered into the record as Exhibit #1 . n • SP-065-81 Page Three 3. Pursuant to the City of Renton's Environmental Ordinance and the State Environmental Policy Act of 1971 , R.C.W. 43.21 .C. , as amended, a Declaration of Non-significance has been issued for the subject proposal by Metro, the lead agency. 4. Plans for the proposal have been reviewed by all City departments affected by the impact of this development. 5. There was no opposition to the proposal expressed. 6. All existing utilities are available and in close proximity. 7. The subject property is located in the vicinity of 1200 Monster Road. The site is rela- tively level with some topographic relief in the west central and northeasterly portions of the site. An existing berm protects the subject property from potential flooding. The berm is located along the north and east sides. 8. The applicant proposes preloading the site for purposes of expanding the existing sew- age treatment plant. Portions of the site are at a lower elevation than the existing site, and Metro requires the elevations across the site to be equal . 9. The applicant proposes to utilize material from a borrow pit located on site but may not be able to accomplish that objective and may have to resort to importing material to the site. Approximately 5,000 truck trips will be necessary to import the 126,000 cubic yards of material . 10. The Comprehensive Plan designates the area in which the subject property is located as suitable for the development of public and quasi-public uses. 11 . The subject site is currently zoned G (General ; Single Family Residential ; minimum lot size - 35,000 sq. ft.) . The G zone will not permit the expansion of the treatment plant. 12. The applicant indicated that a conditional use permit to allow the current plant and future additions was granted in 1961 . The applicant failed to produce documentation of the permit. 13. The City requested that the applicant dedicate portions of the northeast corner of the subject site for use by King County in the proposed construction of the P-1 Channel . The applicant indicated that all conveyances of property by Metro must be approved by the Metro Council . The exact legal description of the property would have to be pro- vided. 14. The City further requested drainage easements along the north and east side of the sub- ject site. As in the dedication, the Metro Council must approve all such legal convey- ances of rights pertaining to Metro's property. The applicant indicated that such easements may interfere with proposed expansion plans north of. the Metro berm. 15. The area outside of the berm is to remain in its natural state according to the Public Works Department. This would accommodate natural drainage in accordance with the above drainage easement. 16. If fill must be imported to the subject site, the traffic generated will have an impact on the roads in the area; and the Police Department recommended restrictions on hours of operation and the requirement of route posting and the posting of a bond to permit City crews to clear debris from the roads. 17. There are a number of uses in the vicinity surrounding the subject site including the Earlington Golf Course, which is the site of a potential industrial park, and the Longacres race track south of the site. A mixture of commercial and industrial uses are located east and south of the site. CONCLUSIONS: 1 . The special permit to allow fill and grade of property to be used for the expansion of the Metro Renton Treatment Plan appears to serve the public use and interest. 2. The applicant initially proposes to acquire the fill material from a borrow pit located on site; and, therefore, there would be little or no interference with traffic in the area. 3. Importation of fill would require approximately 5,000 trips by large trucks, which would interfere with the heavy traffic in the area and potentially conflict with traf- fic generated by the Longacres Race Track. In order to forestall interference with x, SP-065-81 Page Four the traffic, if importation of material should be required, a limitation on days and hours of truck travel would be in order. Since the area is industrial in nature, the hours of operation could occur as early as 6:30 a.m. but should not extend past 2:30 p.m. so that there is no interference with the afternoon traffic in the area. ' - 4. The accumulation of debris must be removed by the contractor but, upon failure to properly remove same, the City must be in the position to clear roads to maintain safety; and, therefore, the applicant should post a bond to permit City crews to clear the roads upon determination of the Police or Public Works Department. - 5. The route selection should be approved by the Police and Public.Works Departments. 6. No hauling should occur on weekends because inspection and clean up is not possible at that time. 7. The creation of an easement for storm water flow required for flood control purposes will have to be executed, and Metro will have to provide same. Metro cannot be in the position of jeopardizing flood control measures in the Valley nor can it enhance the damage potential due to its expanding operations. An easement will , therefore, be required as further specified by the Public Works Department prior to the issuance of the first annual license. 8. The Metro Council must approve any transfer of property for the use of the P-1 Channel , and the specific route must be defined so that Metro can work with other governmental agencies to protect the Green River Valley from flooding. DECISION: The special permit for fill and grade is approved subject to the following conditions: 1 . The applicant posts a cash bond in the amount of $3,000 (three thousand dollars) to allow City crews to clear the streets of debris generated by the subject operation. 2. The hours and day of operation shall be limited to Monday through Friday from 6:30 a.m. to 2:30 p.m. 3.• The truck route shall be approved by the Police and Public Works Departments and posted accordingly. 4. An easement for natural drainage be conveyed to the City. 5. The applicant works with the sponsors of the Green River Eastside Watershed Project to define what portions of Metro's property is required for the project and to determine a satisfactory means of accomplishing a transfer of said property. 6. The applicant demonstrates that the land is zoned or otherwise regulated to permit the expansion of the treatment plant. ORDERED THIS 8th day of September, 1981 . Fred J. Kauf . Land Use Hearing Examiner TRANSMITTED THIS 8th day of September, 1981 , by Affidavit of Mailing to the parties of record: Raymond Drebin, Metro, 821 2nd Avenue, Seattle, WA 98104 Joe Fernandes, Metro, 821 2nd Avenue, Seattle, WA 98104 Versie Vaupel , 400 Cedar Avenue S. , Renton, WA 98055 Larry Brown, Western Pacific Properties, Inc. , 33838 Pacific Hw. S. , Federal Way, WA 98003 TRANSMITTED THIS 8th day of September, 1981 , to the following: Mayor Barbara Y. Shinpoch Councilman Richard M. Stredicke Richard Houghton, Acting Public Works Director SP-065-81 Page Five David Clemens, Acting Planning Director Michael Porter, Planning Commission Chairman Barbara Schellert, Planning Commissioner Ron Nelson, Building Director Lawrence J. Warren, City Attorney Pursuant to Title IV, Section 3015 of the City's Code, request for reconsideration must be filed in writing on or before September 22, 1981 . Any aggrieved person feeling that the. decision of the Examiner is based on erroneous procedure, errors of law or fact, error in judgment, or the discovery of new evidence which could not be reasonably available at the prior hearing may make a written request for review by the Examiner within fourteen (14) days from the date of the Examiner's decision. This request shall set forth the specific errors relied upon by such appellant, and the Examiner may, after review of the record, take further action as he deems proper. An appeal to the City Council is governed by Title IV, Section 3016, which requires that such appeal be filed with the City Clerk accompanying a filing fee of $25.00 and meeting other specified requirements. Copies of this ordinance are available for inspection in the Finance Department, first floor of City Hall , or same may be purchased at cost in said department. • EXE 3IT NO. 4 RECEIVED CITY OF RENTON ITEM NO; 5/Q i 66' -8/ WEARING EXAMINER AUG 2 5 1981 e' ;--- ( I AM PEA ' • FI , • , . , k , , \s., , ,„ ......„,......„ \ ..t. / ..,'' \ 'y / I t ‘ . \ \ ..• / / . \ \ • iiiiii • ' \ . I\I� \ T �� • 1 \ N. 1 Sr9G P-1 DRAINAGE CHANNEL \\ \ \\ \ \ \ • \ 9C r---, DIGESTERS --- \\\ i()D 2� �0 1 k°9p ,i i I l �\\\ . \ , GRAVII�Y TH CK ERS c) s�� -:::--CI - I !\\.\\\ \ • SCALE IN FEET I .I ,...1., \1 • i '%WATER I ID 4§',\tli. �7'" I\ ,,L J • \\\�� STORAGE \ __ DEWATERING \-- \ \� TOWER G BLEND TANK % \� RECOVERY ©©\_i % O/ j 1QGAS DISSOLVED AIR .----- \\ \\\ ,I('+- L--1 STORAGE FLOTATION \\\ \ \ K • ENERGY ,�Zn\ 1 x:r% \\\ \\ .:• RECOVERY ��-� .- \\\\\\\\% \\\\ \\\\1 % \\ e, 1 .. . \\ \\\ \\\ NO% \\---./ \\ ----- \ \ ...' • \ /I/ /� ram 1\ \% )\1 , \\\\ \\" �`, , \\\ c 1 . Ogy • la 14 9L00 p$4AT SURE \\\\\\\ , e•----. II\''..--'\ \\\ \\\. \\ ....----. r\C) A9 SF ``\ fptyUe 9LD0 2 RUC,F\yg£ , I °Lox) r3 \ gY \ \ Cyr MF` G .`.;"a". . •� �� a` �1,�F C BLO 11, TUCTUR£ '•• w„ • \ N RAjLROM rAG D£W L2:N-6-. \a.TN . \ .\ 4h1 CFILORINE STORAGE \ a SPURS \ i J u • \ LEGEND \ / PHASE I `--1 PHASE IZ ` \./' V•3"9`L WpY r -1 L--J FUTURE - r' PLANNING DEPARTMENT PRELIMINARY REPORT,. TO THE HEARING EXAMINER PUBLIC HEARING :AUGUST 25, 1981 • APPLICANT: MUNICIPALITY OF METROPOLITAN ,SEATTLE 'FILE NUMBER: SP-065-81 A. SUMMARY & PURPGS is OF ' }mUEST: . . The applicant seeks a Special Permit approval to preload the subject site (126,000 cubic yards) for 8 secondary •clarifiers, a new aeration structure, and a primary sedimentation structure to increase the capacity of the existing Renton Treatment Plant. B. • GENERAL INFORMATION: 1 . Owner of Record: Raymond Drebin 2. Applicant: METRO 3. Location•. (Vicinity Map Attached) Vicinity of 1200 Monster Road. 4. Legal Description: A detailed legal description is available on file in the Renton Planning Department. 5. `Size of Property: + 7. 0 acres 6. Access: Via Monster Road 7. Existing Zoning: "G" , General Classification District, Minimum lot size 35,000 square feet. 8. Existing Zoning in the Area: "G", M-P, Manufacturing Park 9. Comprehensive. Land Use Plan: Public%Quasi-Public 10. Notification: The applicant was notified in ,writing of the hearing, .date. Notice was proper.ly2 published in the. Daily Record Chronicle on August 10', 1981 and posted in three places on or near • the site as required by City Ordinance • on August 7, 1981 . C. IS'ORY/RcxGRou1 D : The subject . site• was annexed into the City by Ordinance #1745 of April 14,; 1959 at which time the present zoning classification was applied. PLANNING DEPARTMENT PRELIMINARY RE^"-�T.-.TO• THE HEARING EXAMINEF;' • PUBLIC HEARING ►ugust 25, 1981 MUNICIPALITY OFMMETROPOLITAN SEATTLE: FILE NO. SP-065-81 PAGE TWO D. PHYSICAL BACKGROUND: 1 . Topography: Much of the site is level, although there are some minor rises and falls in the west central and northeasterly portions of the property. 2. Soils : Urban land (Ur) is soil that has been modified by disturbance of the naturalllayers with additions . of fill material several feet .thick to accommodate large industrial and housing installations. The erosion hazard is slight to moderate. No capability of woodland classification. 3. Vegetation: Scrub brush and blackberries are the dominant features. 4. Wildlife: The existing .vegetatidn provides some • habitat for birds and small mammals. 5. Water: Other than the water utilized for treatment, no surface water was observed on the subject site. 6. Land Use: The site presently consists of a sewage treatment facility. The Earlington Golf Course is to the north and east while railroad tracks are to the south and the Green River to the west. E. NEI. :i ,t' 'A:00D CHARACTERISTICS: • The surrounding properties consist of a variety of land uses 'but public/quasi-public is the most, common, F. PUBLIC SERVICES: 1 . Water and Sewer: a 12" water main extends north-south on Monster Road adjacent to the subject site while the Metro Gravity sewer is located on Monster Road along the southerly portion of the property. 2. Fire Protection: Provided by :the City of Renton as per Ordinance requirements. 3. Transit: N/A 4 . Schools: N/A • 5. Recreation: N/A G. APPLIC LE SECTItS OF THE ZONING CODE: • 1 . Section. 4-729, General Classification District H. APPLICABLE SECTIONS OF THE .C r C!I:,r:+r,l SI E PgAN OR DER OFFICIAL CITY DOCUMENT: 1 . Policies Element, Comprehensive Plan (1981 ) , 1 .M. 2, 8.D.. I. IMPACT ON THE NATURAL OR BUS ENVa '' 'o I' ' ; : ' 1 . Natural Systems : Grading and filling:.will remove some vegetation, disturb the soils, .increase storm water runoff, and have an effecton traffic'°and noise levels in the area. However, through proper drainage and dust control methods, many of these impacts can be mitigated. PRELIMINARY REPORT TO, THE HEARING EXAMINER PUBLIC HEARING: AUGUST 25, 1981 MUNICIPALITY OF - a: TROPOLITAN SEATTLE: FILE NO. •SP-065-81 PAGE THREE • 2. Population/Employment: Minor -3... Schools: N/A • 4. Social: N/A 5. Traffic:Preloading the 'site with 126,000 cubic yards of fill will result in approximately 5040 truckloads of additional traffic (25 cubic yards/truck) J. I;;:#11ipiC:erillian ASSESSMENT/' HRES„OLD DETERMINATION: Pursuant to the City of Renton 's Environmental Ordinance and the State Environmental Policy Act of 1971, as amended, RCW 4.3-21C, METRO has taken lead agency status and issued proposed and final declaration of non-significance for the subject proposal. . K. AG IPS/19EPARTMEN "S CONTACTED: 1 . City of Renton Building Division. 2. City of Renton Engineering Division. 3. City of Renton Traffic Engineering Division. . 4 . City of Renton Utilities Division. 5. City of Renton Fire Department. 6. City of Renton Parks Department. L. PLANNING DEPARTMENT ANALYSIS: • 1 . The proposed filling operation is consistent with the Comprehensive Plan description of Public/Quasi-Public and "G" zoning for the subject site and surrounding area. 2. As submitted, the applicant proposes a site stabilization project (filling operation) utilizing approximately 106,000 cubic yards of preload material to be acquired from a Borrow Site "A" on the subject property (see map) . An additional 20,000 cubic yards of preload. material will be acquired from outside the subject site. Borrow Site "A" will be rehabilitated to protect soils disrupted during the borrow operation. This material will serve as a base for future construction of secondary- clarifiers and a. primary sedimentation . structure. (There is a possibility that the preload • material will be acquired entirely off-site, depending upon availability and cost considerations of the contractor. ) 3. No landscaping plan has been submitted with the subject proposal, although the applicant indicates in the Environmental Checklist Form that the project will include landscaping/ vegetation plans-:to ensure that some habitat is replaced and soils are protected from erosion. The substantial setbacks of the existing buildings and the location of the berm would not require extensive plantings. However, a detailed plan of proposed revegetation will be necessary prior to issuance of the grading permit by the Building .Department. • . 4. The Engineering Division of the Public Works Department advises that the area east and north of the existing • berm is to remain in its natural state- and a drainage easement over the area must be granted to the City. In addition, property required for the P-1 Channel .must be deeded to the City. See other comment. PLANNING pEPARTMENT pc PRELIMINARY REPO TO THE HEARING EXAMINER PUBLIC HEARING: ._,JGUST 25, 1981 MUNICIPALITY `OF METROPOLITAN SEATTLE: FILE NO. SP-065-81 PAGE FOUR 5. A latecomer 's agreement for water will be required and community facilities charges for water and • sewer will apply as per Utilities Engineering Division comment. 6. The Police Department has devised several requirements which the applicant must fulfill and observe during '" the proposed .operation. They are as follows: • a. Hauling hours to be 6 :30 a.m. to 2: 30 p.m. due to the .heavy traffic in the area. b. The street will be kept clear of dirt and debri at all times. c. A three thousand dollar ($3, 000) cash bond be posted with the City of Renton for street clean-up, if the contractor does not clean up the street. d. No hauling on Saturdays or Sundays unless • the contractor hires a police officer to monitor the hauling. e. Hauling route to be approved by Traffic Engineering Division and Police Department. - f. Signing of area per Traffic Engineering requirements. M. DEPARTkENTAL REC.;'III'oufni*ATICS Based upon the• above analysis recommend approval of . .the Special Permit subject to the satisfaction of items L-3 through L-6. r j 1 I „ s - •w I + arc .-,..�` I '` �i'��''��p�///� . ��P�`�,�,'e•�i�y1 ��''�:�a. <'�� t. ��ri��8 , . / .,' r10 , r� IM >� M — aitiet - - / . i • I r �tr ♦ :e,� it Via' iti �.,ABANOOivEO '�•f•� •-ik:-... �'_._' „ ,la, EC1 \ • _____ _____ _ 0.. .„__I______ r• 1 . 1 . ,,, .. .1 Ito . 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' ' NR -. . v ME •ER DO►15:_fieA — -_ . • MUNICIPALITY OF METROPOLITAN SEATTLE (METRO) SPECIAL PERMIT, File SP-065-81 • APPL I CANT METRO TOTAL AREA + 7.0 acres PRINCIPAL ACCESS Via Monster Road EXISTING ZONING G, General Classification District • EXISTING USE ' METRO Treatment Plant (Renton Treatment Plant) PROPOSED USE Increased capacity of existing Renton- Treatment Plant COMPREHENSIVE LAND USE PLAN Public/Quasi-Public COMMENTS ! . . - . . . , • "..; • . .. . ' . • , ....--- , . -........„, .., ..--- . . . .. . ....,. .i .. i . .. ..,. 5-" ,•• 1\ eine4h*--.5 •.•• ...c : L -- .., I \. zirjii4\O 0 jr;,.4 . :.• V. - • .4 . • ' • i. . C", .-:'' • ,'-- . 3,16 A . ,,..-,..,- . .. # ' .1.. /'1'. qa #. 40• - ...i 1111 ..L Allik\:_.C. 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It l' -4(4t 1 • ,.....4 .: ., fit ,,.........::: 1 ; • - , . k 1 u .-. . . /. 1. S. iSAIW▪ r . . :V. , ; • NOM NOM • f ..t. • - Peen NJAANNI OA almas Imo ICA X, 4 I..:,' •WAIL 8641•611C6111-11111Hfasalau . . . • , .-.:• faareffr a - ut f I \\ i LOCATION II A P SCALE.1%400' -...." .1* kig fTT1t uwaso4arrok.Oeffimeen•low* "11 I a NOM 411110111 VIIMATIWIT PLANt ""'AL OM ...*1112012 • . 1 . i •••••••• . •r If •••••=..ass ailLaitatileST U.,641.11/Et X ....- C44 i ,...... LOCATION ANO VICINITY NAPS "."..j". .;:z.1.1.___J. 2 • • • :I!!1L w Y a 4 • J J ;�.r7,,r .�a,,, . r 14 ! ': •'I sill I.SSG' S. r3 <, • ' /"..% ••••-::::::::....' .,.•..,::::::-* • . •L.... ..5.•41Y....*Z'os. ''',.1.1 s'••- . . -41 4410 -.' ( ..::•• 4 :;-.7:;.--,•'- .•-•. - ' .---• /IA fisa. '' ,....0,a, ,,, ..: li . :a.. . SIVA .... .'.. .;:. 1 a‘ ' MI e, a . y .-t.-63,,-.407:-.- .-- so ---- 110P-irtif Vt-.. '1''' IiiiP l':: , .. ,... ,• \ jAgitille____Aaigi , . (,,:f., ,...11t:r.-;-....:..,L-:-..-:-...:-...fitsav9F.7. --....•:-.:::.'..-i-_;,-i-A-; , `k.(04gf'''''.1'. . P.1\ s • .f.,\.,,,,,,,,, -, •�- •..r.••. 1 let '.:: :•!i.'4°- : I iss------------" --.44400 ,Ztli 'Silk\ 1 t. \ 1, I..$1 ‘ss•.'...'• IN6)** 640) . .. • ....... i .......,.. ,...„:„.„, . * • illi"•'''/ -,.. /.''.. ,4114,0".41W, , i 1; '.....'., ,' ... WI ,., i .„ . %Se' , : , • • '('�'�...ys'..eip •• 33J.i - �,,�_.....J (ram.\\i • b� \ ', •' r ;\II ,, r' • ....S....1' •••k%. .. , : . '......':' - .. .5.; • • . t Revision 3/1981 • RENTON PLANNING DEPARTMENT DEVELOPMENT APPLICATION REVIEW SHEET • Application P&7,4L /EAlj?irtsi• eigs•80 Pvit sta14 ig rrfoexis1 (lactosoviskor S r�►iaa r e1*...for' a stew cteralrer .�iLocdtr o�nfh 'tf1« V ,►e"/• S'/Iepr&se shlee t� ®� . T.�..�-famert"i A, '` ' lie t mho Mbsd Al • Applicant:ifierR® I .: ❑Public Works Department Engineering Division SCHEDULED ERC DATE: o Traf ' n Division g' SCHEDULED HEARING DATE: 2/42147 ti • ies Eng. Division ire Department ®Parks Department Building Department Police Department Others: COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE PROVIDE COMMENTS TO THE PLANNING DEPARTMENT BY 5 :00 P.M. fi /si • REVIEWING DEPARTMENT/DIVISION: ---thef Approved Approved with• Condi 0 Not,Approved i 1; • DATE: e t 4/ Signature of Director or A hor,ized .,Representati.v.e ;.• • REVIEWING DEPARTMEt r/DIV•.IS'tON - ' IAMAT'6S EKpproved ['Approved with Conditions Ej Not Approved • DATE: r/I4%`8/ Si gnat re of Director or Authorized Representative • • • • • Ufl I ; APPROVAL. SMUT TO rO LATE COMERS AGREEMENT • WATER Ld-z 2 LATE CIMEI$ ASIIEEMERI • SEWER 111111.111111111 SYSTEM DEVELOPMENT CRAM • WATERS SYSTEM DEVELOPMENT CRUDE • SEWER _� ''" •� ' SPECIAL ASSESSMENT AREA CHANCE • WATER � � No • APPROVED WATER PLAN APPROVED SEWER PtAII 111111111.1111111111111 APPROVED FIRE HYDRANT LOCATIONS NY FIRE DEPT. ES= FIRE FLOW ANALYSIS • REVIEWING DEPARTMENT, VISION: a Approved 12rApproved with Conditions [] Not Approved .gc.74.___ 47, - 74' DATE: crh3/di Signature of Director or Aut •rued Repuse tative /eGz 4 J�ro��7Zi /��ZC 55q�zy� 2- _/ 12�un2&1] tz) 61 l l l pL. REVIEWING DEPARTMENT/DIVISION: / 2i�/:•_f-/C EkJ Jj /I / /!� Approved Approved with Conditions Not Approved eltfrj DATE / / Signature of Director or Authorized Representat' e REVIEWING DEPARTMENT/DIVISION: Fl Approved [' Approved with Conditions ID Not Approved • DATE: '-'/O'-6 1 Signatur Director or Authorized Representative • • REVIEWING DEPARTMENT/DIVISION: ' POLICE []Approved Q Approved with Conditions (] Not Approved 1) Hauling hours be 0630 A.M. to 02 :30 P.M. due to the heavy traffic in the are 2) Th±ee thousand dollar($3, 000) cash bond be posted with the City of Renton foz street clean up if the contractor does not clean up the street. 3) Street be kept clear of dirt & debri at all times--if not city would clean & 4)Ntake funds from street cleaning bond. o hauling on Saturdays or Sundays unless contractorhires police offic monitor hauling. We do not have enough personnel to moni er to c�r�Ehauling on,, week e Signature of DiRtutoi �d Representative 5) Route of haul be approved by traffic Eng. & Poli Dept. 6) Signing of area per Traffic Eng. REVIEWING DEPARTMENT/DIVISION: Lt ' .R. Persson 8/4/81 Approved Approved with Conditions EjNot Approved .t113 -'' M ; I:3 t r ; Munic. .ty of Metropolitan Seattle Exchange _g. • s21 Second Ave.,Seatt1e,Washington 98104 • RR R 2 /FINAL DECLARATION OF SXMXXXX XN$$/NON-SIGNIFICANCE Action: Site Stabilization at Renton Sewage Treatment Plant Description of Proposal: The Renton Sewage Treatment Plant (see * map A for site location) has now reached its interim design capacity. Continued population growth in the service area and the desire to improve local water quality conditions now mage—it • necessary .to identify alternatives which address expansion of the Renton facility. These questions are now eing a esse . as part of the Renton facilities planning process . Regardless of the selected treatment level alternative, some expansion of the Renton Treatment Plant must take place, requiring the site stabilization. The Renton Treatment Plant expansion to 72 mgd is to include the actdl.t3.on of eight secondary clarifiers located immediately east of the existing eight secondary clarifiers , an aeration structure located immediately east of the existing aeration structure CuvER) Proponent: Municipality of Metropolitan Seattle (METRO) Location of Proposal: The Renton Sewage Treatment Plant is located at 1200 Monster Road inthe City of Renton (see map AL Lead .Agency: METRO This proposal, has been determined to (day/not have) a significant adverse impact upon the environment. An EIS (ix/is not) required under RCW 43.21C. 030 (2) (c) . This • decision was made after review by the lead agency of a completed environmental checklist and other information _ on file with the lead agency. • Responsible Official: Rodney G. Proctor Position/Title: Manager/Environmental Planning Division Date: July 21, 1981 Signature:, 9N,44e 67 Environmental Planning Division Description of Proposal continued and possibly a -primary sedimentation structure located to the north of the primary treatment structure (see map B) . The portion of the expansion addressed by this environmental action includes the site stabilization for the proposed secondary clarifiers and the primary sedimentation structure. The site stabilization project is presently proceeding on the assumption that approximately 106,000 cubic yards of preload material will be acquired from Borrow. Site "A" (see map B) . An additional 20 ,000 cubic yards of preload material will be acquired from outside the treatment plant site. Borrow Site "A" will be rehabilitated to protect soils disrupted during the borrow operation. The site stabilization project will begin September 19, 1981. • A second option being considered is acquisition of the entire 126,000 cubic yards of preload material from outside the treat- ment plant. Under this option, Borrow Site "A" will not be disturbed. The decision to use Borrow Site "A" or to use material brought in from off-site will be made by the contractor and will be based on cost considerations and availability of suitable off-site material. Completion of either option is scheduled for September 1982. ' • • • • • ,. - -- - - - --- - •• -- ••--- \ • • • _ -- - -- ____ Fu.r_,2 f..a�tc —-�— ----- • f p..% O :o rue rf. «o _ _ c • - t • - • mow \gi .00000 ..._ ... __ _ _ . . . __ . __________ -- -. BotQot.J AREA A --. - p 81.Am . --- ` —. --- -�-� _ ?12-'.LIPID e•DR �RJZS .� _ __._ .._- . --..rr- .�----- - .•- _ -7 �.!► I?RIA4 ar -SII.;rteirirar!oJ -. ..... - -- - - - - . !�" _ J 3r�w Za_ _ — —_ — — --- - - �;a+'. P.. ^�Op� -- - ..... -- • -- - -- - - -- -• �— -.. �_:.�y - • - -- ASV,Tfotl tZT� - - -- - ?iL'rW:ZY r i • -' •, • k i ^y W.40.,ARY 5::,ZtPLI lTi AI TA_ArNx. v l 7'T� tI . Sr- Z XiCiMi STzuGTL•R2 _ .. / �{ :1�� ,T Wyt�+J. _ . „1. It . (.3. 0"I- in:SIC lr . L - -•----- - • .- 0 • _. -- s►sDe4RY 'sat:z rnca+ ". , -4 -—--- R E NTO W SE;AJAGL TREAT aAitT - SITE STA Sal ZATtoIv • __ - 6. . P A • RENtGN SE�LJAG . TREA-rM 'Jr PLANT : _ .. . / 4oti rajas vr't © e,a , • I 00 'p 4 • r - sou, li sj y�4srpe - - - 8 1 A •It V . LON6ACRES . . - _ . ... ._ < TRaG.K _ - . . . _. SCVTH as/TA t:&.i .I. _ . w i • • 4 4 OF R�‘i, A. o NA O THE CITY OF RENTON MUNICIPAL BUILDING 200 MILL AVE.SO. RENTON,WASH.98055 omem ° BARBARA Y. SHINPOCH, MAYOR • PLANNING DEPARTMENT �•o co' 235- 2550 o941,-et) SEPSE-OAP August 7, 1981 Municipality of Metropolitan Seattle 821 Second Avenue Seattle, Washington 98104: Attention: Gregory. Bush Environmental Planner Re: APPLICATION FOR SPECIAL PERMIT FOR FILL AND GRADE TO ALLOW PLACEMENT. OF 126,000 CUBIC YARDS OF MATERIAL FOR THE EXPANSION OF THE METRO RENTON SEWAGE TREATMENT PLANT; file SP-065-81 ; property located in the vicinity of 1200 Monster Road Gentlemen: The Renton Planning Department formally accepted the above mentioned application on July 31 , 1981 . A public hearing before the City of Renton Hearing Examiner has been set for. August 25, 1981 , at 9 :00 a.m. Representatives of the applicant are asked to be present. All interested persons are invited to attend the hearing. If you have any further questions, please call the Renton Planning Department, 235-2550. Very truly yours , c6tAltAtk Ro e_ r_J. laylo Associate Planner RJB:wr cc: Raymond Drebin, METRO Rodney G. 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R.,_; NOTICE OF PUBLIC HEARING RENTON LAND USE HEARING EXAMINER RENTON, WASHINGTON A PUBLIC HEARING WILL BE .HELD BY THE RENTON LAND USE HEARING EXAMINER AT HIS REGULAR MEETING IN THE COUNCIL CHAMBERS, CITY HALL, RENTON, WASHINGTON, ON AUGUST 25, 1981 , AT 9:00 A.M. TO CONSIDER THE FOLLOWING PETITION: MUNICIPALITY OF METROPOLITAN SEATTLE Application for a special permit for fill and grade to allow placement of 126,000 cubic yards of material for the expansion of the METRO Renton Sewage Treatment Plant, file SP-065-81 ; property located in the vicinity of 1200 Monster Road. Legal description of the file noted above is on file in the Renton Planning Department. • ALL INTERESTED PERSONS TO SAID PETITION ARE INVITED TO BE PRESENT AT. THE PUBLIC HEARING. ON AUGUST 25, 1981 , AT 9 : 00 . A.M. TO EXPRESS THEIR OPINIONS. PUBLISHED: August 10, 1981 DAVID R. CLEMENS ACTING PLANNING DIRECTOR CERTIFICATION I, STEVE. MUNSON, HEREBY CERTIFY THAT THREE COPIES OF THE ABOVE DOCUMENTS WERE POSTED BY ME IN THREE CONSPICUOUS PLACES ON THE PROPERTY DESCRIBED ABOVE AS PRESCRIBED BY LAW. ATTEST: Subscribed and sworn to before me, a Notary Public, in and for the State of Washington residing in King County, on the 7th `day. Of. August, 1981 . SIGNED: iiiit&4904150141riN —r s6. W® • imvision 3/1981 RENTON PLANNING DEPARTMENT DEVELOPMENT APPLICATION REVIEW SHEET Application• ire ;`, �.; jlt �1r, z• ' Seca ,. 'l® g Aerentilet P deP a p'f t errsti a 0, Ste aenraliori . ff dim f Locition: �� "r 'Tr Kf . lab° Moscestoir . Applicant: METAD ®Publ i c Works' Department SCHEDULED ERC DATE: `�' =� ngineering Division . Traffic Eng. Division SCHEDULED HEARING DATE: VOAS/01, ®Utilities Eng. Division ['Fire Department :Parks Department ® Building Department ® Police Department ®Others: COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE PROVIDE COMMENTS TO THE PLANNING DEPARTMENT BY 5 :00 P .M. ON • - 1 REVIEWING DEPARTMENT/DIVISION: ]Approved 121Approved with Conditions E] Not Approved z_) • -2=1- • �v , G - p DATE: 8/4r/cry Signature of Director or Autrr rT zed Rep ese tati ve /c c�/e� �` Fro, -/L /t/eZ&�SAr2/ /o 7G -/ IFe v112L-D G(- -4 . REVIEWING DEPARTMENT/DIVISION : ['Approved ®Approved with Conditions ® Not Approved DATE: Signature of Director or Authorized Representative • i • • • • • • • • • • • • • • • I I 1 • • • • • 1 .. .. • s/y/w/ I ision 3/1981 RENTON PLANNING DEPARTMENT DEVELOPMENT APPLICATION REVIEW SHEET Application;5PR7.L PERMiT(sP- x-9, ,e f4 ,ore.loi.osi/e (ic,OO V Y1 S3 'fdr 9 3e onia ryCIO r,4r 'rty' a ir�w aerate/Ion S'fn4ir 11 � Lolteioans `' eI1r-r « 64ru&reli Aerertr7 � ct' oedr c �rfd pit ..POWirfAM I g44 .1R.00 Mop r •Ad. Applicant: /WM0 L: Public Works Department ❑Engin -r'i'ng Division SCHEDULED ERC DATE: °""" raffic Eng. Division SCHEDULED HEARING DATE: Utilities Eng. Division ��5" �� ❑ Fire Department Parks Department Building Department Police Department ❑ Others: COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE PROVIDE COMMENTS TO THE PLANNING DEPARTMENT BY 5 :00 P .M. ON 941/49/ - . REVIEWING DEPARTMENT/DIVISION: S/P/1�-_F/c EA/ 6/N t i_ I N c Approved [' Approved with Conditions ❑ Not Approved � 2 C' eftlfijDATE: f /i Vg,/ Si nature of Director or Authorized Re resentat''ve ! 9 P REVIEWING DEPARTMENT/DIVISION: ['Approved ❑Approved with Conditions Not Approved DATE: Signature of Director or Authorized Representative °'" ision 3/1981 RENTON PLANNING DEPARTMENT DEVELOPMENT APPLICATION REVIEW SHEET Application;5p mt , Ain FT tsp.44(.8 F g,5m I1 (iai , st'440 ®r 9 seeepaelr sets fter , a mew(Repro/tan sfiThitebro eptelorteitimaerap&vevio €reel vole avadte• reify wipe Locteon: a4 moo MootCI Applicant: AD LQ. ®Public. Works Department ®Engineering Division SCHEDULED ERC DATE: ®Traffic Eng. Division SCHEDULED HEARING DATE: 44/1rAt • ®Utilities Eng. Division Fire Department Parks Department uilding Department Police Department Others: COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE PROVIDE COMMENTS TO THE PLANNING DEPARTMENT BY 5 :00 P.M. O84/9/ REVIEWING DEPARTMENT/DIVISION: � � `/ Approved Approved with Conditions ® Not Approved DATE: (Aa Signatur Director or Authorized Representative A , . REVIEWING DEPARTMENT/DIVISION: ,®Approved []Approved with Conditions ® Not Approved DATE: Signature of Director or Authorized Representative v® wq . Rovision 3/l981 RENTON PLANNING DEPARTMENT DEVELOPMENT APPLICATION REVIEW SHEET Application ,P 4 1'!A IT(SR .. .e - .0) ii:4006414 iocre/ s'/1 (iagt000vkte -614. 6 aele. afar e.14,1".Ef ffieses , a kinevo -ertrifora .sgfiv,grh, Loct► Ae� ®ea �St A Veli. 6441 t r to ee' (lPfie a ¢e. tionr Applicant: ti"","A 111: ®Public Works Department ['Engineering Division SCHEDULED ERC DATE: ''''' Traffic Eng. Division SCHEDULED HEARING DATE: 10440 D Utilities Frig. Division ® Fire Department ®Parks Department ® Buile*ng Department Police Department Others: COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE PROVIDE COMMENTS TO THE PLANNING DEPARTMENT BY 5 :00 P .M. 0 REVIEWING DEPARTMENT/DIVISION: POLICE ®Approved D Approved with Conditions ® Not Approved 1) Hauling hours be 0630 A.M. to 02 : 30 P.M. due to the heavy traffic in the arE 2) Three thousand dollar ($3 , 000) cash bond be posted with the City of Renton foz street clean up if the contractor does not clean up the street,:' 3) Street be kept clear of dirt & debri at all times--if not city would clean & take funds from street cleaning bond. 4)No hauling on Saturdays or Sundays unless contractor hires police officer to monitor hauling. We do not have enough personnel to monitEmE:hauling on,aweek( Signature of DiTttc-toi •c# gad eR presentative 5) Route of haul be approved by traffic Eng. & Polic. Dept. 6) Signing of area per Traffic Eng. LtG% 441sson 8/4/81 REVIEWING DEPARTMENT/DIVISION: ®Approved ®Approved with Conditions ® Not Approved DATE: Signature of Director or Authorized Representative 'elt ve %vas '-vision 3/1981 RENTON PLANNING DEPARTMENT DEVELOPMENT APPLICATION REVIEW SHEET Application• s J r Sa eF iguiSee0 �rimo % 4 ®� w y e lle M e re&w •'e ee ®f c flatx all Location:ilivesho etes 0- A J. Applicant: inlerA IA Ia: 0 Public Works Department Engineering Division SCHEDULED ERC DATE: ®Traff'- ng. Division d SCHEDULED HEARING DATE: % 2S/94 , u ;VA id ities Eng. Division 2 ire Department ®Parks Department ® Building Department ® Police Department ® Others: COMMENTS OR SUGGESTIONS REGARDING THIS APPLICATION SHOULD BE PROVIDED IN WRITING. PLEASE PROVIDE COMMENTS TO THE PLANNING DEPARTMENT BY 5 :00 P .M. 0 d r REVIEWING DEPARTMENT/DIVISION: �--�/2 Approved 0 Approved with Conditio,n:s-= :_,, D Not Approved .... .� §. Signature of Director or A horizedReprese,ntati.ve ..':'.``:.:.'' : - f , i r REVIEWING DEPARTMENNi/DI'V1-SI'ON —`- — ' --1A I( 17`G`5 dpproved ®Approved with Conditions ® Not Approved DO - DATE: r/19'eei Si gnat re of Director or Authorized Representative • " Vf Liu.APPRDVEII. SUD9ECT iD • LATE COMERS AGREEMENT • WATER uj_242, LATE COMERS AGREEMENT • SEWER SYSTEM DEVELOPMENT CHARGE • WATER SYSTEM DEVELOPMENT CHARGE • SEWER SPECIAL ASSESSMENT AREA CHARGE • WATER No SPECIAL ASSESSMENT AREA CHARGE - SEWER NO APPROVED WATER PLAN - ; APPROVED SEWER PLAN APPROVED FIRE HYDRANT LOCATIONS BY FIRE DEPT. FIRE FLOW ANALYSIS 2JmETRD Municipality of Metropolitan Seattle Exchange Bldg. • 821 Second Ave.,Seattle,Washington 98104 July 29 , 1981 Mr. Roger Blalock Associate Planner City of Renton Planning Department Municipal Building 200 Mill Avenue South Renton, WA 98005 RE: Final Declaration of Non-Significance for Renton, Sewage Treatment Plant Site Stabilization Dear Mr. Blalock: (- s :per your request, :enclosed is a copy of the FDNS for the Renton Sewage Treatment Plant Site Stabilization project. Please feel free to call me if I can be of further assistance (447-6899 ) . Very truly yours , Gregory Bush Environmental Planner GMB:oj Enclosure RE yFR: ///,. UL 311991 ja,- lin . _ . Municipality of Metropolitan Seattle O� - �.I�/T�,,,\ • ��B1dg. * 821 and Ave.,Seattle,W c3.ningeon 9.0 A�C\\�t ' ir_ July 21, 1981 I U Sa. 31 lga� 1- 1 +�A,. 1\ "6 •-"---- A, ,' \'- , NIAG'`�E/r TO: Department of Ecology - Environmental Review Section RE: Final Declaration of Non-Significance for Renton Sewage Treatment Plant Site Stabilization. a Enclosed is a final declaration of non-significance for the subject project as required by the State Environmental Policy Act of 1971 (RCW 43. 21C) and WAC 197-10-340 (7) . ' A proposed declaration of non-significance for this project has been reviewed by agencies with jurisdiction and all comments received during the 15-day review period have been considered. This document is being sent to you for listing in. the "SE;A Register" as specified in WAC 197-10-831. . Very truly yours, - • . I 4g676;D - - Rodney G. Proctor, Manager Environmental Planning Division RGP:gbj . Enclosure H t:^�2`' :: -:'»1':. ..` <: 2-; ..'`r- _4 '''' _ .W ,>- .'"..;W.r:'k.-3. -`+..7...iti.: `•:-4,;"' SX.�`t; 7 oua.�a�s i.m�..ri.a es.m.esa��®.e'tmes oa ss.w..n.r.i P�wllOilY�E�— Sja 2- 5 Municipality of Metropolitan Seattle Exchange Bldg. G 821 SesondAve.,5attie,Was'inggton 98G4 RRaR2 /FINAL DECLARATION OF SXNNANgE/NON-S IGN IF ICANCE • Action: Site Stabilization at Renton Sewage Treatment Plant Description of Proposal: The Renton Sewage Treatment Plant (see ' map A for site location) has now reached its interim design capacity. Continued population growth in the service area and . the desire to improve local water auality conditions now make it necessary to identify alternatives which address expansion of the Renton facility. These questions are now being addressed as part of the Renton facilities planning process . Regardless of the selected treatment level alternative, some expansion of the Renton Treatment Plant must take place, requiring the site stabilization. The Renton Treatment Plant expansion to 72 mgd is to include the addition of eight secondary clarifiers located immediately east of the existing eight secondary clarifiers , an aeration structure located immediately east of the existing aeration structure (ovER) Proponent: Municipality of Metropolitan Seattle METRO) Location of Proposal : The Renton Sewage Treatment Plant is located at 1200 Monster Road in the City of Renton (see map A) . Lead Agency: METRO This proposal has been determined to (lug/not have) a significant adverse impact upon the environment. An EIS ( /is not) required under RCW 43 . 21C. 030 (2) (c) . This decision was made after review by the lead_ agency of a completed environmental checklist and other information . on file with the lead agency. Responsible Official: Rodney G. Proctor Position/Title: Manager/Environmental Planning Division Date : July 21, 1981 Signature: Environmental Planning Division • Description of Proposal continued ' and possibly primary sedimentation structure_ located to the . north of the primary treatment structure (see map B) . - The portion of the expansion addressed by this environmental action includes the site stabilization for the proposed secondary clarifiers and the primary sedimentation structure_ .The site stabilization project is presently proceeding on the assumption that approximately 106 ,000 cubic yards of preload material will . be acquired, fromBorrow. Site "A" (see map B) . An additional . 20 ,000 cubic yards of preload material will be acquired from outside the treatment plant site. • Borrow 'Site "A" will be rehabilitated to protect soils disrupted during the borrow operation. The site stabilization project . will begin September 19 , 1981. A second option being considered is acquisition of the entire 126 ,000 cubic yards of 'preload material from outside the treat ment plant. Under this option, Borrow Site "A" .will not be disturbed. The decision to use Borrow Site "A" or to use material brought in from off-site will be made by the contractor . . and will be based on cost considerations and availability of suitable off-site material. Completion of either option is . scheduled for September 1982 . • . . Pit fa. �, REU-1GN 5E G TRE.Arm�U► PLAfqr _ CALF L^U25c rm r Y _ . -. \\ '�j A . MST ! f i ) ,1j, - . - - 410 5 SOvey` t-.4,7., . ge _ . g‘v 9• 1 L0N6ACRfi5 _ RACE _ , _ . . _ ‘11 t TRAL< SCVTi?C£ :Z �" CZ) . :_ us.. - ►i - ). .' . _ ".. -.. _._ . (IT) ,..... - _ . - - .../ .. .... .-. - _ Sere- '� /-__.- __ --- i _______ 7.,a) wa-_,7.• .3r.art-.------_—--—7,- -- -- _ - /f �^!> >7-inii zr -sZ9t:�73id.-Artez+ - : -- --' --. -- -- -- . - _--- . _ _.__ ! t 1 r vcrvz . . - - -- - - ---•--—- --- vzr- f 1 + t - - - -.DAR:1t-7Ct i , I i i - -- Dv,m1S <_1.rD cg -_ - - • -•- - - NSW a=u,T cs1 - — — - - - — -- - - 05LL'Cr. . ,5/(F,2.,...4...-...,) ----r-"','''. LA - - EQfi7larJ • '17Q t t 2 ,. } •t + •; :Lair Q� =SJL!! 1.1rirtD:3 - - • - — -— - .. 0 .) j _. . . _ . R c)TCW -5ctLIr?G� �"z.r:f i't r. PLAI4-1— . .. _ _ .. . _ _ . _ ._. ... :__ . .. _ _. .._ _ . _ _ _ -5i 5 STAE1LI� T0 A M - ---_ . CITY OF RENTON 7h-'\ RF(;ENE APPLICATION FOR SPECIAL PERMIT JUL 27 1981 FOR OFFICE USE ONLY 4/y/ // G DEPAj� File No . SP- D(OS Date Rec' d. Application Fee $ /''/,/),Uq- Receipt No . /9/91 Environmental Review Fee $ //4 , .77&'� -) ./'Fee__-o�o,.e/ APPLICANT TO COMPLETE ITEMS 1 THROUGH 6 : 1. Name Municipality of Metropolitan Seattle Phone 447-6686 Address R21 Second Avenue, Seattle WA 98104 2 . Property location 1200 Mutter Road, Renton 3. Legal description (attach additional sheet if necessary) The location of the work within the existing Renton Treatment Plant is shown on the drawing entitled "Renton Treatment Plant - Enlargement II, Phase I Layout" attached to this application and by this reference made a part hereof. The description of the Renton Treatment Plant is on the attached sheet. 4 . Number of acres or square feet 7 . 0 acres Present Zoning M-1 f24,0009 ay.LG y/Neos 5 . What do you propose to develop on this property? Preload the site for eight secondary clarifiers, a new aeration structure and a primary sedi- mentation structure to increase the capacity of the existing Renton Treatment Plant. 6 . The following information shall be submitted with this application : A. Site and access plan (include setbacks , Scale existing structures , easements , and other factors limiting development) 1" = 10 ' or 20 ' B. Parking , landscaping and screening plan 1" = 10 ' C. Vicinity map (include land use and zoning on adjacent parcels) 1" = 200 ' to 800 ' D. Building height and area -(existing and proposed) E. A special permit required by the Renton Mining , Excavation and Grading Ordinance shall submit the information listed in Section 4-2307 . 5 in addition to the above. 7. LAND USE HEARING EXAMINER' S ACTION: Date Approved Date Denied Date Appealed Appeal Action Remarks Planning Dept. 1-77 oF AFFIDAVIT 77/. 4 Pgilii) -JUL 27 1°a. I Raymond Drehin , being duly swor ik eclar t ] am the owner of the property involved in this application a'�b �ih_WP foregoing statements and answers herein contained and the inforttat-ion herewith submitted are in all respects true and correct to the best of my knowledge and belief. Subscribed and sworn before me this 27th day of July , 1981 Notary Public in and for the State of Washington, residing at Seattle • Municipality of Metropolitan Seattle by 411aLta ItY eat/4.144..e....r9 1N, e of Notary Public) (Si nature of Owner) Supervisor , Right of Way and Property 821 Second Avenue Seatt1P, WA 981f4 821 Second Avenue (Address) (Address) Seattle , WA 98104 (City) (State) - (206) 447-6642 (Telephone) (FOR OFFICE USE ONLY) CERTIFICATION This is to certify that the foregoing application has been inspected by me and has been found to be thorough and complete in every particular and to conform to the rules and regulations of the Renton Planning Department governing the filing of such application . Date Received , 19 By: Renton Planning Dept . 2-73 1 • RENTON TREATMENT PLANT LEGAL DESCRIPTION • Parts of Government Lots 2, 5 and 6, the NE 1/4 of the NW 1/4 and the SW 1/4 of the NE 1/4 of Section 24, Township 23 North, Range 4. E. , W.M. , King County, Washington, as more particularly • described herein below: Commencing at the Northwest corner of Section 24, Township 23 North, Range 4 E. , W.M. , as established by King County Aerial Survey Coordinates (Existing Monument) ; thence South 87°26 ' 48" East along the north line of Section 24, a distance of 2692. 56 - feet, more or less, to the North 1/4 corner of said Section, established by a survey and the ties thereto, together with the . King County Aerial Survey Coordinates, filed with the King County Engineer; thence South 0°55'30" West along the north-south center - line of said Section 24, the bearing of which is based on the angle - in the southwest quadrant at the North 1/4 corner as determined from King County Aerial Survey Subdivision of said Section 24, a distance of. 609.118 feet to the true point of beginning of this - description; thence South 89°04'30" East along a line perpendicular to said north-south center line of Section 24, a distance of. . 470. 00 feet; thence South 0°55' 30" West along a line which is 470. 00 feet easterly of and parallel with said north-south center line of Section 24, a distance of 1402. 37 feet, more or less, to the intersection thereof with the northerly line of the right of • way of the Northern Pacific Railway Company; thence southwesterly, westerly, and northwesterly, along said northerly line of right - of way, to .the intersection thereof with the northeasterly line of 72nd Avenue South; thence northwesterly, northeasterly and northerly along the easterly line of 72nd Avenue South to the intersection thereof with a line bearing North 89°04'30" West from said true point of beginning; thence South 89°04'30" East along said last mentioned line, 10466.33 feet, more or less, to • said true point of beginning of this description. ALSO - An irregular shaped parcel of land all situate in the Northwest- 1/4 and the Northeast 1/4 of Section 24 , Township 23 North, Range 4 East, W.M. , in King County, Washington, containing 11. 48, more or less, acres described more particularly as follows: • Beginning at a point on the North margin of right-of-way of the Burlington Northern Inc . , "Former Northern Pacific Railway Company" _ 470. 0 feet easterly .as measured at right angles to the North-South . quarter line of said. Section 24; thence North 0°55' 30" East 1402. 37 feet; thence North 89°04' 30" West 1516.33 feet, more ,or less, to the Easterly margin of County Road No. 24-23-4-1 "Monster or Steel Hill Road" ; thence northerly along said easterly margin to a point hereinafter described; "Commencing at a point on the east" line of the Northeast quarter of the Northwest quarter of Section 24, Township 23 North, Range 4 East. , W.M. , in King County, Washington, which point is 1804. 20 feet north of the center of said Section 24 ; thence South 89°34' 43" West 1050 feet, more or less, to the easterly margin of County Road No. 8; 72nd Avenue South "Monster or Steel Hill RENTON TREATMENT PLANT LEGAL DESCRIPTION Road" ; thence northerly along said easterly margin 404.0 feet to said point; thence continuing above description; thence North 89°34' 43" East 200. 0 feet; thence northerly at right angles to a - point on the south margin of a hereinafter described tract of land. - . "A tract of land of varying width all lying- in the north half of Section 24, Township 23 North, Range 4 East, W.M. , in King County, Washington, the centerline being described as follows: Commencing at the northwest corner of. said Section 24; thence South 87°26' 48" East 1826. 61 feet on and along the north _line of Section 24; thence North 22°26° 02" West 13. 12 feet to a beginning of a curve and the true point of beginning of this. description; thence continuing with a tract of land 300 feet in width, being -150 feet on each side of the following described centerline:. . thence southeasterly along a tangent curve to the left having a radius of 572.96 feet a distance of 666. 41 feet; thence South 89°04' 30" East 783. 81 feet; thence southeasterly along a - tangent curve to the right having a radius of 159. 15 feet a distance of 215.27 feet; thence South 11°34' 46" East 311. 39- feet to a .point which is the end of 300-foot width of said tract, thence continuing with a tract of land 280 feet in width, being 140 feet on each side of the following described centerline; thence South 11°34' 46" East 1100. 00 feet to a point which is the end of 280-foot width of said tract; thence continuing with a. tract of land 140 feet in width; being 70 feet on each side of the following described centerline; thence South 11°34' 46" East 29.00 feet; thence South 12°48' 36" East. to a point on the- north margin of Burlington Northern Inc. right- of-way "Former Northern Pacific Railway Company" and the end of - - this description" Thence continuing with the abovedescription: Thence easterly along south margin of said tract of land to a point North 89°04' 30" West 344. 81 feet of a point South 00°55' 30" West 459 . 118 feet of the north quarter of Section 24; thence South 89°04' 30" East 783 . 81 feet; thence southeasterly along a tangent curve to the right having • a radius of 9 . 15 feet a distance of 12 .38 feet; thence South 11'34' 46" _ East 311.39 feet; thence North 78°25° 14" East •10. 00 feet; thence South 11°34' 46" East 1100. 00 feet; thence North 78°25' 14" East 70. 00 feet; thence South 11°34° 46" East 29. 75 feet; thence South . 12°48' 36" East to a point on the north margin of Burlington Northern . Inc. right-of-way "Former Northern Pacific Railway Company" ; thence southwesterly along said north margin to the true point of beginning and end of this description. Containing in total 64. 48 + acres. cg.\\[-b 10 JUG �� 1981 • . • • , . . - , . • ,‘ ":1•:•:,. 'r,Z,:.z.z... • , ...".',--1 f.' ,-•:%,.'2; A:i.) --/-------- , ' Aix--::•:••s—, , s;', ''....•:,3-.• t;:.-. ,-- \ I ." '';:i -' .. ' .LI _ s,'.--‘%:',, ., i.• ‘• •'‘1:2* ., • :. : ''`•• / - sZ „ "ssIs.s. ..1 '-- , '''',./ _,W, ' • \ \• s, .7....4................... / *.• ',,,V.1 . , . `.. ' 'N't„..1/'•,',' `, , • 1 tP7-316---G PIO 20 ' ` \ '4 ; •\‘', .. *. •".22,13,, IN kir&•:„1* •• •. i..., =.,,; • SCALE,r• loo• — --Th-q.' .' :. •... 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'-', :,/,':',1, ',. icy.... — _-__ tw' id., • -- - • vo• --‘, try / ,, , 4,13 .:-------___ ' -----r , ...\,,,,,,,, • L 0,:‘,,,,,, ,, , ,,/,/ /,,g;t0vP,,,,t"...:Iiivw_iti.\. 004s • . • ... • / % , __ -.....,.. _.•-.• ' v.t4i.._•-4 ‘11‘4.,i011'" 11911t.°6:1610 ---- -00-;---..-;. 1.k --,...,, -.41/1,N, --•---...._--.-..' 0,0:0° 's i • `11.0./.1.t.rai-'_.„,././ I 0%30 __ .••• ,,,A111-4>iiiitiat --,'-'•-,''' __ ----2':7::::" °cf. c '.:..-- ' • •-• siso ....,::,-,---------• •N* - .-.N.,' itosc , -............w.01 •••::- ! , --"4144•4/..._ ost* ; '.... .—,.,, ‘, ..:::=:. •,...0 „ .., ''"N.,............ : .;;.;..__ __..- _•••• .- IMMO PROPOSED FILL AREA 72.1-:IF.--- ' liF. .. . . .'. — —.:—I--- J F Cig METR JUL 1981 nwn O IskartkicHlIty of NSPN0P.OtAA Smmtl...... -•-•-• NOTED RENTON TREATMENT PLANT .••.A12010 ENLARGEMENT II-PHASE E ma: C46 111•••••...MIA GENERAL PLAN 2 ••••••••• •• i�J 0Nt\ 7 •-... T r ! Q Z \i ce'/`/16 �0 --.....1%.,.. 47 .<2..z______L______,7 ...._ • ___...• ., } �",� clrr Ll7ra /• ,\, A, ,: AVL 11: ity\._ eyY \\ • '•\ • .11.f. lRTSN • ' \ \V •f .3.7 v • �v y o t ` /a r s,a v ° ;: 1 '�' \• � /•�/ jai~ �c�e F O {Q ` 4, \ , �.RfNTDN a .! - -I. _ /AC t./N6TON a (it) Arar • . V TACLTAIAj 0e RCN7AN •\ •\ u INr.V[1l1 JElYAGE CO UA!S! �! - . .. AIRPoRT W rRUTMENT � \4,, pr PLANT / _ \ 6 •RENT h b - - W - \ ~� t - 10.4 . / vP LA MT 11 Lk" -PUYALLUP \ \ ] in 4 :(Q�S•(CiC• ��' ! ~ y 3 L / �\ V� �� 17 V 1V ; v x. 3 T r VICINITY MAP \ a\\ Qg�• f 1,/ ` /31 i \ \\ .c" c...----- INDEX TO DRAWINGS _ ro. A N. Y R/VCR_ s ill) • h • I � W u Z c: � 2ct o h laI14 V £ONCACREs K 0. RACE" TRACK • 5 Iv, 3r _ DATUM NOTE —' - ' ► AGI ELEVATION Io0 EQUALS M[An SEA LEVEL DATUM LLiG AGS-MI I1.47A4)11 • 1 v I %/�/y/�/ IFUTU EEMENT II u LOCATION MAP I I I \\ 1/ SCALE.1%400. • -..o.ea J.F. Yyj �f"S L•�® eh Munkto fy of Metropolitan 5ot1. F.JUL 19i ~•� O.W.4 L= RENTON TREATMENT PLANT ••••.A1201 • NOTED ENLARGEMENT II-PHASE I Par C46 rr...�a•a LOCATION AND VICINITY MAPS ''�•"`I .e ee.,e,a. I WY OAT( a.•a r 1 0 2 C h a 5 • 4 \ T.• „I r,4 z:.. *1 ti • • 7;"'N 6 ' • -. 0Municipalityof Metropolitan Seattle (..) 39 • „�� . Exd &B . 9 8-2i Second Ave.,Seatt:e,Wa hingioi t 98104 - • \, <,;. - t, PROPOSED/TM3 DECLARATION OF Z1 .-.xr� :•'. Z/NON-S1GNIF ICA.NCE - • • Action: Site Stabilization at Renton Sewage Treatment. Plant • Description of Proposal: The Renton Sewage Treatment Plant (see map A for site location) has now reached its interim design capacity. Continued population growth in the service area and • the desire to improve local water quality conditions now make it - necessary to identify alternatives which address expansion of • the Renton facility. These questions are now being addressed as part of the Renton facilities planning process. Regardless of the selected treatment level alternative, some expansion of the Renton Treatment Plant must take place, regui_rinq the site stabilization. The Renton Treatment Plant expansion, to 72 mgd is to include the - addition of eight secondary clarifiers located immediately .east . of the existing eight secondary clarifiers, an aeration structure located immediately east of the existing aeration structure and (0 Proponent: Municipality of Metropolitan Seattle (METRO) Location of Proposal: The Renton Sewage Treatment Plant is - . located at 1200 Monster Road in the City of Renton (see map- A) . . _ Lead Agency: _ METRO This proposal has been determined to (11XXU/not have) a • significant adverse impact upon the environment. An EIS • t /is not) required under RC:•7 43. 21C. 030 (2) (c) . This . decision was made after review by the lead agency of a - completed environmental checklist and other information on file with the lead agency. Responsible Official : Rodney G. Proctor Position/Title: Manager/Environmental Planning Division • Date: July 6 , 1981 Signature: . 71, ..4zr..,f L`i ,,%,ce --T a . Environmental Planning Division . • s`” 'sa. - -' `re ` "f'.`. �.x.7 `� :.- .- .o ma's., 4-1.-a� a' '"? -rd_` Nature and Brief Description continued The portion of the expansion addressed by this environmental action includes the site stabilization for the proposed secondary clari- fiers and the primary sedimentation structure. The site stabili- zation project 'is presently proceeding on the assumption that approximately 106 ,000 cubic yards of preload material will be acquired from Borrow Site "A" (see map B) . An additional 20 ,000 cubic yards of preload material will be acquired from outside the treatment plant site. Borrow Site "A" will be rehabilitated to protect soils disrupted during the borrow operation. The site stabilization project will begin September 19 , ..1981. . .. . A second option being considered is acquisition of the entire 126 ,000 cubic yards of preload material from outside the treat- ment plant. . Under this option, Borrow Site "A".` will not be disturbed. The decision to use Borrow Site 'A" or to use material brought in from off-site will be made by the contractor and will be based on cost considerations and availability of suitable off-site material. Completion by either option is scheduled for September 1982. • • . . • - c.,.-9 2-3- -- :7.. , .. 7. 41' : . -,:jail - . C7.4:gt-:-. =i . Municipality of metropolitan Seattle • Exchange Bldg. 821 Second Ave.,Seattle,Washington 98104 . .. ENVIRONMENTAL CEECK:_.?ST FORM _ •• . PROPOSED ACTION: sit„ ff-abi 1 i7Ft4 on 7,f-. Rnn-E=on Sey:acrn . • • Treatment Plant - I. BACKGROUND . . .- . 1. Name of Proponent Municipality of Metropolitan Seattle MT. • . - - 2. Address and. Phone Number of .Proponent: - . •• 'Exchange Building; 821• . Second- Avenue;. MS763 • . - . . Seattle, WA 98118 : TELEPHONE: 206/447-6613 - ' . 3. • Date Checklist Submitted - July 6 , 1981 4 . Agency Requiring Checklist METRO - - - • . - 5. Name of Proposal, if .applicable: - - - • - 6. Nature and Brief Description of the Proposal (in- cluding but .not limited to its size, .general design . elements , and other factors that will give an - accurate understanding of its scope and naturel : • The Renton Sewage Treatment Plant (see map A for site location) has now reached its interim design capacity.- . Continued population growth in the service area and the .- desire. to .improve local water quality conditions now .- . make it necessary to identify alternatives which ad- _ dress expansion of the Renton facility. These ques- . tions are now being addressed as part of the Renton facilities planning process . Regardless of the selected - treatment level alternative , some expansion of the • Renton Treatment Plant must take place, requiring the . • site stabilization. The Renton Treatment Plant expansion to 72 mgd is to include the addition of eight secondary clarifiers located immediately east of the existing eight secondary clarifiers , an aeration structure located immediately - - _ east of the existing aeration structure and possibly - a primary sedimentation structure located to trie nofEh _ . • , of the primary treatment structure (see map B) . (OVER) Description of Proposal continued possibly a primary sedimentation structure located to the north of the primary treatment structure (see map B) . The portion of the expansion addressed by this environmental action. includes the site stabilization for the proposed secondary clari- fiers and the primary sedimentation structure. The site stabili- zation project is presently proceeding on the assumption that approximately 106 ,000 cubic yards of preload material will be acquired from Borrow Site "A" (see map B) . An additional 20 ,000 cubic yards of preload material will be acquired from outside the treatment plant site. Borrow Site "A" will be rehabilitated to protect soils disrupted. during the borrow. operation. The site stabilization project will begin September 19 , 1981. A second option being considered is acquisition of the entire 126,000 cubic yards of preload material from outside the treat- ment plant. . Under this option, Borrow Site "A" will not be - - disturbed. The decision to use Borrow Site "A" or to use material brought in from off-site will be made by the contractor and will be based on cost considerations and availability of suitable off-site material. Completion by either option is scheduled for September 1982. . . 1 •1 A F /-\ . _ . R.e-_,JTou sct.a.)AGL TE A;u='il i pLA`JT _-- -- — • tivG:or+ -- ' - �� 47Va tT b , Y sorry c. _ - - s�8 r SEL'7F Cc +: • n _ e - o a r _ _ 1"!A� - -- - - • \ ___ _ _ _ _ _ _ _ _ . . ._ __ _ . __ _____ . _ . • . _. __ _ . _ __ _ _ . . . . _ _ _ _ _ _ . .. _ .__ . . _ __. _ __ _ ____ __ . . ._ _ . .. __. a PLY-ER F.%v321= o Sa rem j o _ —- -- 9 "c;`STAaulSALE'S - --- - ------ - -------- --- p F�R40taJ A2�AA _ 1 3-SKr, - - -- --- - - �-._ - — ;a ?RShrjRI, .,.SEDr:�1stiTRrlo31- - -- -. _ - — / .1 t ! ,/ STRcJcrvR� -- —. PARttvG ; i - D2A.0,75 s�-x.=3 OFF - _- - - N=rJ?svZATIc0 gocuM? AE2R7(OnJ iZ r7 t 1 ,STRcCfVR, I t +, ( 1 1ii ?Q=tJri:DD i}p� Shrcihs LTri _. � � \IN - ADriIU. ✓ � j� i :�, - -- -BLDCT- --• • 0 Si?) SEC�1.%DA?Y •-S.DL!:E cr;c.J - - - - - --'_— .. S:zvcTv2I--- - _ -- -- -- - • --. - - - R E J i ory 5EwA& 1 f)j - L , ; Slims ST?.EILl2 ATIOAt _.:- --. 7. .. Location of _ _2oposal (describe the ph1 -_%_al setting of the proposal, as well as the extent of the land area- affected by any environmental impacts , including any other information needed to give an accurate understanding of the environ- mental setting of the proposal) : - The Renton Sewaae Treatment Plant is located at 1200 Monster Road in the City of Renton (see map B) . Preload material will cover approximately 7 acres of the treatment . plant site (4 .2 acres for the proposed secondary clarifiers and 2 .8 -acres for the proposed primary sedimentation structure), 8 . Estimated Date for Completion of the Proposal: September 1982 9. List of all Permits, Licenses or Government Approvals - - Required for the Proposal (federal, state and local -- including rezones) : Special grading Permit and Annual License (City of Renton) 10 . Do you have any plans for future additions , expansion, or- further activity related to or connected with this proposal? If yes, explain: Yes . The areas of the Renton Treatment Plant undergoing site • stabilization will be used_ for expansion or -tile creatm arc facility. Expansion to 72 mgd will include eight secondary clarifiers , a new aeration structure, resocaciOn o. a stuic_ye building and possibly a primary sedimentation structure. 11. Do you know of any plans by others which may affect the property covered by _Your proposal? If yes , explain: No. • 12 . Attach any other application form that has been coin feted regarding the proposal; if none has been completed, but is expected to be filed at some future date, describe the. • nature of such application form: Application for Special Grading Permit (City of Renton) and Annual License (City of Renton) will be forthcoming. II. ENVIRONMENTAL . IMPACTS (Explanations of- all "yes" and `maybe" _ answers are required.) - Yes Maybe No 1) Earth. Will the proposal result in: - - ' a) Unstable earth conditions or in changes in geologic substructures? X b) Disruptions, displacements, _ compaction or overcovering of the soil? X • c) Change in topography or ground • surface relief features? X - ( d) The destruction, covering or = ` modification of any unique geologic or physical . features? . . 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 of X - any bay, inlet. or lake? _ • Explanation: (b&c) The intent of the project is to fill approximately 126 ,000 cubic yards of preload material - to the sites for proposed secondary clarifiers and the proposed primary sedimentation structure. If all or a. portion of this material is excavated from Borrow Site "A" (OVE 2) Air.- Will the proposal result in: : - a) Air emissions or deterioration of ambient air quality? _ . b) The creation of objectionable odors? X - c) Alteration of air movement, moisture` or temperature, or any change in - - - - climate, either locally or k regionally? Explanation:. (a&b) There will be a temporary increase in air emissions and some diesel odors from construction equipment. No long-term impacts will result. • I b&c continued then the- topography of the hill will be changed. The topography of the sites intended for stabilization will change slightly, with an elevation increase averaging 10-15 feet. Preloading is designed to consolidate soils where new structures will be built. . Soil compaction caused by the movement of construction equipment . and by the application of preload material may alter the absorp- tion rate during the construction period. If Borrow Site "A" is used, the area will be re-sloped at 2:1 ratio to prevent soil from sloughing. _ • • • • Yes Maybe No 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? X b) Changes in absorption rates, drainage patterns, or the rate and amount. of surface water runoff? X 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? - X 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? X 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 - - water? •i) Reduction in the amount of water otherwise available for public water supplies? . X Explanation: b) The berm surrounding the treatment • plant site provides an excellent barrier to prevent sediment bearing runoff from leaving the site. During • construction, drains located, in the berm (see map B) will be screened with straw bales or sealed off to prevent sediment transfer to local drainages _ Filter fabric will be installed at Borrow Site "A" and the - (OVER) • • _ - • Explanation continued . preload site to prevent soil from sloughing over the berm at either area (see map B) . Precautions will be taken during site_ stabilization work to ensure that the runoff and drainage patterns from the site are not changed. • c) A flood hazard analysis. performed during the- Renton treatment facilities planning process indicates that the treatment plant . will receive adequate protection from floods. .. g): Site preparation may require some dewatering, which could be accomplished by use of well points or other means available to the contractor. Groundwater will not be removed from the site and noimpacts - are expected to result from any dewatering .action. • • • • -_` . r .r. Yes Maybe No 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? V _ X c) Introduction of new species of flora _ into an area, or in a barrier to the - normal. replenishment of existing species? g d) Reduction in acreage of any agri- cultural crop? X Explanation: a) Flora present at the preload sites is predominated by native grasses , blackberry, etc. Flora present at Borrow Site "A" is similar, but also includes mature maple, alder and other native deciduous trees . The site stabilization .project will result in removal (OVER) 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) ? V X b) Reduction of the numbers of any - unique, rare or. endangered species . . -of fauna? . X c) Introduction of new species of fauna into an area, or result in a barrier to the migration or movement of - fauna? X d). Deterioration to existing fish or V - wildlife habitat? - X . Explanation: Although a number of rabbits and other small mammals inhabit the treatment plant property, ample 'n�h" atexists on areas adjacent to the preload sites to - ensure that the wildlife population will be accommodated. • 4a continued of all vegetation at the preload sites and perhaps a significant portion at Borrow Site "A" if this site is used. The project, however, will include landscaping/vegetation plans to- ensure that some habitat is replaced and soils are protected from erosion. Yes Maybe No . 6) Noise. Will the, proposal increase existing noise levels? X Explanation: Noise levels will increase temporarily during construction activities . Standard construction techniques . for minimizing noise impacts will be used. The immediate surrounding area is zoned industrial and noise impacts should be minimal. Temporary noise levels' between72-94 (OVER 7) Light and Glare_ Will the proposal produce new- light or glare? X - - Explanation: 8) Land Use. Will the proposal result in the alteration of the present or - . planned land use of an area? X Explanation: The proposal may allow some alteration-, of present land use by enabling additional sewerage develop= ment by Metro component agencies . The proposal would not, however, necessitate any land use changes. Land use changes are governed by local agencies with land use authority_ . 9) Natural Resources.. Will the proposal - • result in: - a) Increase in the rate of use of any -- - natural resources? X b) Depletion of any nonrenewable - natural resource? X Explanation: _ , - 10) Risk of Upset. Does the proposal involve the risk of an explosion or the release of hazardous substances (including, but - - - not limited to, oil, pesticides, chemicals or radiation) in the event of an accident - or upset conditions? ` X Explanation: 6 continued dbA can be expected when machinery is operating. To mitigate -- noise impacts , construction activity shall be restricted to the hours. between 8 a.m. and 5 p.m. In the cases of special noise sensitivity, portable noise-reducing barriers shad be used to control noise. .1 ' • Yes Maybe No 11) Population. Will the. proposal alter the • . location, distribution, density, or . growth rate of the human population of • an area? . X . . Explanation: The project is the first element of plant. . • expansion which would accommodate ad itiona flows into • the existing sewage service area, thereby allowing addi- tional development to be served by sewers. however, the . location, distribution, density and growth rates are . governed by local- land use plans and policies. 12) housing. . Will the proposal affect . existing housing, � or create a demand • - X . _. •• for additional housing? • . Explanation: See Item 11 13) Transportation/Circulation. Will the proposal result in: a) Generation of 'additional vehicular - movement? . � . x . b) Effects on existing parking facilities • or demand for new parking? X c) Impact upon existing transportation ._ . . , - . systems? . . . X - d) Alterations to present patterns of . circulation or movement of people . * and/or goods? • X e) Alterations to waterborne, rail or . air 'traffic? X - f) Increase in traffic hazards to . • - motor vehicles, bicyclists or - pedestrians? X - . Explanation: (a&b) ' A minimum of additional traffic may be generated by workers travelling to and- from the site during the construction period. If all preload is acquired out- • • side the site, approximately 6, 320 roundtrips within a 6-mile_radius of .the treatment plant will be generated . ' by trucks bringing in preload material. This may result in a slight impact to the existing transportation (OVER) 13 a&b) continued - . circulation in the immediate area and along Monster Road. Site stabilization for the new secondary clarifiers will require the removal of an existing storage building and parking area. This building and paved area will be relocated elsewhere on the site. f} . The possible increase in traffic hazards along Monster Road will be reduced by providing flagmen along the route and posting warning signs as appropriate. Vehicle movement will be limited to daylight hours . .o Yes Maybe No 14) Public Services. Will the proposal have an effect upon, or result in the need for new or altered governmental services - in any of the .following areas: . a) Fire protection? X b) Police protection? X c) Schools? x ; ' d) Parks and other recreational facilities?. X e) Maintenance 'of public facilities, = including roads? - X . f) Other governmental services? X Explanation: 15) Energy. Will the proposal result in: a) Use of substantial amounts of fuel - or energy? - X b) Demand upon existing sources of energy, or require the development of new sources of energy? . X Explanation: Total fuel consumption by machinery used at the construction site is estimated at approximately 18 ,000 gal 1 n7is (gas and diesel) . Total fuel consumption if all preload material is acquired from a site within a 6-mile radius of the sewage treatment plant is estimated at (OVER) 16) Utilities. Will the proposal result in a need for new systems, or alterations - to the following utilities? a) Power or natural gas? X b) Communications systems? - - X' c) Water? X d) Sewer or septic tanks? X e) Storm water drainage? x f) Solid waste disposal? x Explanation: 15 a) continued. . . . approximately 36 ,000 gallons (gas and diesel) . This fuel consumption will not be considered significant nor will it result in energy-related impacts .. - '4 • - es Maybe No - { 17) Human Health_ Will the proposal result in the creation of any health hazard or - . potential health hazard (excluding • mental health) ?' X Explanation_: _ - • 18) Aesthetics- Will the proposal result in • -: .- : - the obstruction of any scenic vista or _ - • • • view open to the public, or will the - ' , proposal result in the creation of an . - . - - - aesthetically offensive. site open to - public view? • X Explanation: _If Borrow Site "A" is excavated during site • stabilization, some of the excavation may be visible from - Monster Road. This area will be re-vegetated in -a manner similar to existing flora to minimize .aesthetic impact. • Hvdroseeding_ will be used to protect exposed slopes from (OVER) 19) Recreation. Will the proposal result in . _ an impact upon the quality or quantity . of existing recreational opportunities? X • Explanation: Improved multi-use recreation facilities are being examined during the facilities planning process for • pvnans-ion of the Renton Sewage Treatment Plant. 20) Archaeo`logical/Historical. T:i ll the ' . : • . proposal result in an alteration of a - - . significant archaeological or historical . . site, structure, object. or building? . X Explanation: ` Extensive archaeological/historical investi- • - . . gations have been performed at the Renton Sewage Treatment Plant expansion site. These investigations conducted bv the Office of Public Archaeology revealed no archaeological/ • . historical finds . No finds of significance are anticipated .(OV III. SIGNATURE ' • 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 no '-significance that it might issue in reliance upon this eecklist sh• iild there be any misrepresentation or lack of f.-1 , jsclosur .. d ay part_ VIT4� PP /Proponent L-Xl / .PAW . . . Bate 1 S . 0 t 18 continued erosion and reduce aesthetic impacts . Recommendations on re-vegetation plans will be prepared by a landscape architect . and implemented during the construction period. Borrow Site "A" slopes will be sloped at 2 :1 ratio to prevent erosion. 20 continued_ . at either Borrow. Site "A" or the preload sites . If, howeverr, any evidence of archaeological/historical significance is . discovered during excavation, all construction activity will be halted until the importance of the find can be evaluated. by the State. 429 114kio 044 • rnEia Municipality of Metropolitan Seattle Exchange Bldg. ® 821 Second Ave.,Seattle,Wasitingion July 29 , 1981 Mr. Roger Blalock Associate Planner City of Renton Planning Department Municipal Building 200 Mill Avenue South Renton, WA 98005 RE: Final Declaration of Non-Significance for Renton Sewage Treatment Plant Site Stabilization Dear Mr. Blalock: As per your request, :enclosed is a copy of the FDNS for the Renton Sewage Treatment Plant Site Stabilization project. Please feel free to call me if I can be of further assistance (447-6899) . Very truly yours , Gregory Bush Environmental Planner GMB :o j Enclosure 17/1 • ,nr.1 ;,y x�,y{ 4l 4' .5 ,tf;txy1 r .yyt f_..Y,, I f .. o 3Y t.3,S•uyr yn r .-.�.tbW"`�'i5.`F; .#Sf4`.#�..�� !��i��-F.h�[�•�3�� 7-!'8.�'�r7 .�n�^MsM. �r R*f.�G• ,�+•x�� x 4;.}„t5. ,R R�iXI� y.`.w. :'!t✓a x . ..... Ai ,,3ni� tali Of Metropolitan Seattle t • Ex r e Bidg. ® at Secord Ate.,Se ,Wa ping n 981 <C lice - � � ��r'31. July 21, 1981 • TO: Department of Ecology Environmental Review Section RE: Final Declaration of Non-Significance for Renton Sewage Treatment Plant Site Stabilization Enclosed is a final declaration of non-significance for the subject project as required by the State Environmental Policy Act of 1971 (RCW 43. 21C) and WAC 197-10-340 (7) . A proposed declaration of non-significance for this project has been reviewed by agencies with jurisdiction and all comments received during the 15-day review _period have been considered. This document is being sent to you for listing in the "SEPA Register" as specified in WAC 197-10-831. Very truly yours , al a, • Rodney G. Proctor, Manager Environmental Planning Division RGP:gbj Enclosure `."��'.7ZI" *"i ;"w ."414w:� f.3�•'" �" » �r� �,,iCl�_,C's .y;, t'SP1,i7 -1 �'r. W'k=`f'=� • •_ "Za- *F-, ',..1111171 Municipality of Metropolitan Seattle Exchange Bldg. ® 821 Second Ave.,Seattie,Washington 9S?04 RIUR /FINAL DECIJ.PATION OF EXGXXXXZXN /NON-S IGN IF ICANCE Action: Site Stabilization at Renton Sewage Treatment Plant Description of Proposal : The Renton Sewage Treatment Plant (see map A for site location) has now reached its interim design capacity. Continued population growth in the service area and the desire to improve local water quality conditions now make it necessary to identify alternatives which address expansion of the Renton facility. These questions are now being addressed as part of the Renton facilities planning process . Regardless of the selected treatment level alternative, some expansion of the Renton Treatment Plant must take place, requiring the site stabilization. The Renton Treatment Plant expansion to 72 mgd is to include the addition of eight secondary clarifiers located immediately east of the existing eight secondary clarifiers , an aeration structure located immediately east of the existing aeration structure (( VER) Proponent: Municipality of Metropolitan Seattle [METRO) Location of Proposal : The Renton Sewaae Treatment Plant is located at 1200 Monster Road in the City of Renton (see map A) . . Lead Agency: METRO This proposal has been determined to (kx /not have) a significant adverse impact upon the environment. An EIS (b/is not) required under RCW 43. 21C. 030 (2) (c) . This decision was made after review by the lead agency of a completed environmental checklist and other information . on file with the lead agency. Responsible Official : Rodney G. Proctor Position/Title: Manager/Environmental Planning Division Date : July 21, 1981 Signature: e, Q,y o ` ee..i. Environmental Planning Division .,,..,, � %4i• r...r•ry, e[,i„t.• Y..,� *-hrv��„` '`T`i+`.r'ls._" ,'y`4.`;>: :r,: r". :.,s '- '-''-]';tir>-{`"�,•'..t'•.'T_"'s.�si�,�yt'La. •^r,'�=�'4+iCf't'x Description of Proposal continued • and possibly a -primary sedimentation structure located to the north of the primary treatment structure (see map B) . The portion of the expansion addressed by this environmental action includes the site stabilization for the proposed secondary clarifiers and the primary sedimentation structure. .The site stabilization project is presently proceeding on the assumption that approximately 106 ,000 cubic yards of preload material will be acquired from Borrow Site "A" (see map B) . An additional • 20 ;000 cubic yards of preload material will be acquired from outside the treatment plant site. Borrow Site "A" will be rehabilitated to protect soils disrupted during the borrow operation. The site stabilization project will begin September 19 , 1981. A second option being considered is acquisition of the entire 126,000 cubic yards of preload material from outside the treat- ment plant. Under this option, Borrow Site "A" will not be disturbed. The decision to use Borrow Site "A" or to use material brought in from off-site will be made by the contractor and will be based on cost considerations and availability of suitable off-site material. Completion of either option is • scheduled for September 1982 . • • • • • • :_. ,_..1 . , •• il,c4,p A ,.. . . . _ . . . . . . . . . _ . . . . . . . . . . . _ . . . . . $E Lk)A G 5. TA EA-r I-1.=::::J-r PLA . . .. . .. . _.. . _ . . . . • . - . .. _ . . _ . . . . _ .• . • . A .3.AF LIN GTOM 1 . . . - . . . . . . .or. • • . _ • . . ; . s z .1. . . z s ... . .. _ . _ . . - • Sour . . . . - . . . . 0, • . . . . RAC-E - . 11 { _ •• -- • • • - . - . . . .,• •A . . .. RI . N.,... . .cf . %. . . .__ . . . . . . _ . . . . . . a .113 . ....____ . . . .. _. . ___ _ •• 41, . .. . . _ . . . •,ip - .— - . tIt. . — . . . - . . . . . . ' ...t.1 ' . . • ' I . • I ...1 . . . . . - . _ . . 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"P 3LDG- ,i, --'^t siS. 1.4,••-•-,!....... i • I!N. : .," ' • / - -- • - . . 0 i -- - - -- - .7. __ , ____ _ _ ---- - - • _ -_ Sc�31.;.DA Y ••5a'9trc at3Ca - - _ . .. - - - - - - S;�vc.vim - - -- - - -- --_— -- __ •-- - - -- ;eceipt # CITY OF RENTON PLANNING DEPARTMENT NAME ' • ) C' if/ DATE PROJECT & LOCATION ,+. Application Type Basic Fee Acreage Fee Total • • L' • 6, Environmental Checklist Environmental Checklist Construction Valuation Fee TOTAL FEES Please take take this receipt and your payment to the Finance Department on the first floor. Thank vou. M1 i (,,,-,:,-(0,,,,, T �', c,,,, CANNING �cBFi . ConverseWard Davis Dixon • MICROFILMED -1444 7/4' lsf ��.�� ► c Anchorage, AK • Seattle,WA San Francisco, CA Pasadena, CA Anaheim, CA Las Vegas, NV Denver, CO Cincinnati, OH Caldwell, NJ ga' , • ConverseWard Davis Dixon Geotechnical Consultants • • REPORT ON GEOTECHNICAL EXPLORATION AND STUDY Renton Treatment Plant Phase I Expansion • Site Preparation Renton, Washington • • Conducted for: Municipality of Metropolitan Seattle • • • • (s RE/ ) ckcp,b CWDD Project No. 81-5148-01 July 24, 1981 Converse Ward Davis Dixon, Inc. 300 Elliott Avenue West • Suite 150 Seattle,Washington 98119 Telephone 206 285-5200 } I5iPk ConverseWard Davis Dixon . . <IV Geotechnical Consultants July 24, 1981 81-5148-01 Municipality of Metropolitan Seattle Exchange Building 821 Second Avenue Seattle, Washington 98104 Attention: Mr. Joe Fernandes Acting Consultant Supervisor REPORT Geotechnical Exploration and Study Renton Treatment Plant Phase I Expansion Site Preparation INTRODUCTION This report presents the results of our geotechnical exploration and engineering study for the site preparation of the .proposed Phase I. expansion of the Renton wastewater treatment plant. Briefly, it is planned to prepare the site for the construction of eight additional secondary sedimentation structures, an additional aeration structure and possibly two primary clarifiers. The locations of the proposed struc- tures, in relation to the existing plant facilities, are shown on Draw- ing 1. The purpose of this exploration was to provide geotechnical recommenda- tions for site preparation and for foundation design of the proposed facilities. The scope of the work included review of the existing soils information developed previously during the Predesign, Initial , and Converse Ward Davis Dixon, Inc. 300 Elliott Avenue West Suite 150 Seattle, Washington 98119 Telephone 206 285-5200 �I + -2- Enlargement I soils explorations by Metropolitan Engineers. Also in- cluded was the review of borings drilled during construction, supple- mented by examining construction and settlement records as well as the writer's knowledge of the site construction. In addition, four test pits were excavated in the hill north of the plant to evaluate it as a ! source of possible site fill material . j This work was carried out in accordance with your Request for Proposal of May 15, 1981 and our proposal letter of May 29, 1981 as authorized by your Purchase Order No. C-10318 dated June 8, 1981. • SITE HISTORY Prior:to any construction, the site was used as pasture and a golf driv- ing range. The original ground surface was relatively level except for shallow drainage courses or swales with the ground surface ranging from elevation 113* to about elevation 118. The initial explorations disclosed that the site was underlain by natur- al compressible soils, interpreted as predominantly floodplain deposits, in turn underlain at depth by sandy and gravelly soils which were in turn underlain generally by weathered bedrock (encountered near the high ground at the northeast part of the site) . To cause the anticipated differential settlements to occur prior to construction of the plant structures and final site grading, the preload method of site prepara- tion was selected. A site preparation contract (Contract 61-5) was let and carried out in the late summer and fall of 1961. At structure locations where founda- tions were above original ground surface, compacted select granular fill was placed from the ground surface to above foundation level . Where foundations extended to or below original ground surface, the natural soil was excavated to elevation 108 and replaced with compacted granular fill to above foundation level . Compacted granular fill was not placed _-1 *elevation 100 = mean sea level Converse Ward Davis Dixon,Inc. -3- for future units. Unclassified random fill compacted by hauling units was placed to preload elevations above the compacted fill and outside the building locations. } As noted in Metropolitan Engineers' soils report of September 3, 1962, difficulty was encountered in excavating the natural soils to elevation 108. Pumping or boiling of the exposed soils occurred under the re- peated passage of construction equipment. Generally, wheeled or tracked equipment could operate down to about elevation 110 depending on the equipment routing. Little free water was encountered except that caused by "pumping" under equipment passage. Limited well point dewatering was attempted; however, it was not possible to correct the saturated condi- tion of the upper natural soils once they were disturbed. Dewatering continued throughout the excavation phase and until the compacted fill i, was placed up to elevation 112. A Gradall was used with good results but much of the lower excavation was completed with a dragline with the teeth removed from the bucket. The initial plant units were constructed during 1962-1964 under Contract 62-6 in the site-prepared area. Surplus excavated material from that contract was placed as preload essentially to the east, including the currently-proposed aeration structure area. However, during Contract 62-6 and the subsequent plant Enlargement I (Contract 71-2), overexcava- tion and replacement with compacted granular was not utilized at future structure locations but rather random fill was placed directly on the existing ground surface to preload elevations. This has resulted in the present ground surface topography shown on Drawing 1. Except for Primary Structure 2S, which was prepared under Contract 61-5, the structures (maintenance annex, aeration gallery extension, secon- dary sedimentation tanks 5S, 6S, 7S and 8S) constructed during Contract 71-2 were supported on random fill or on a six-inch layer of drain rock and six-inch layer of uncompacted Metro Type A granular fill placed directly on the exposed natural soils consolidated by previously-placed preload fill . Dewatering by sand-packed well points was successfully Converse Ward Davis Dixon,Inc. -4- carried out for the deeper structures extending below the groundwater level . Limited overexcavation and replacement of the natural soil was necessary--usually during wet weather. SUBSURFACE CONDITIONS The proposed borrow area, Borrow Area B, was explored by surface recon- naissance and digging four test pits at the locations shown on Drawing 1. A .description of the field explorations, together with the test pit logs and laboratory test results are contained in Appendix A. A sum- marization of the conditions encountered and our recommendations are discussed later. The borings drilled previously by Metropolitan Engineers were utilized in evaluating the subsurface conditions at the proposed structure loca- tions. The locations of the pertinent borings are shown on Drawing 1. The logs of those borings are contained in Appendix B. Also included in Appendix B are copies of the Plot Plans showing all exploration borings previously drilled as well as the locations of existing settlement plates and piezometers. It should be pointed out that these borings were generally drilled prior to the placement of any site fill . Thus, the elevation and thickness of individual strata do not reflect any settlement or consolidation of compressible layers. At the location of the proposed secondary sedimentation structures, gen- erally loose to soft silty very fine sands, containing organic material or layers and some wood fragments, were encountered from the original ground surface down to depths ranging from elevation 107 in B-57 to ele- vation 100 in B-56, B-58 and B-59. Loose fine or fine to medium sand was encountered below this layer, increasing to medium dense with depth. Fine to coarse medium compact sand was encountered at depths ranging from elevation 90 in B-57, B-58 and B-59 to about elevation 95 in B-56. This layer was underlain by silty fine sand with pebbles and shell frag- ments to the depths penetrated. At B-12, a three-foot surface layer of J Converse Ward Davis Dixon,Inc. -5- silty sand was encountered underlain by fine sand to elevation 86 where denser sands were encountered. In general , the underlying soils ap- peared to grade sandier to the east. Currently filled to elevation 126 with random fill at the proposed aera- tion structure, the underlying natural soils appear to generally grade siltier and thicker to the north. At B-30, brown silt was encountered from the original ground surface to about elevation 101 underlain by fine sand which in turn was underlain by coarser sandy soils. At the other borings, soft to moderately soft silt to silty clay was encoun- tered from the original surface down to depths ranging from elevation 100 at 6-5 to elevation 90 at B-4 and B-60. At B-4 and B-60, the silt contained interbedded sand. Below the silt, sandy soils were encoun- tered which increased in compactness with depth. Random fill has been placed partially at the location of the proposed north primary structures and ranges up to elevation 132. At the boring locations, the original ground surface was underlain with soft to moder- ately soft sandy to clayey silt to depths ranging from elevation. 105 (B-14 and B-17) to elevation 110 (B-27) . Peat to peaty silt was encoun- tered around or above sea level varying from elevation 103 (B-14) to elevation 100 (B-23) . Generally sandy soils were encountered below the peaty soil . Weathered or decomposed sandstone bedrock was reported at elevation 96 in B-23 and elevation 55 in B-14. The lettered series of borings (B-A through B-E) were drilled with auger-type drilling equipment. Samples were not secured; however, general identification of the subsoils reportedly was made on the basis of the material on the auger flights. Moderately firm to soft alluvial soils were logged from the original ground surface down to depths rang- ing from elevation 105 at B-A to elevation 84 at B-E. Medium black sand was logged at B-B and B-C down to elevation 102 and 97, respectively. Decomposed sandstone (?) was reported at depths ranging from elevation 104 (B-A) to elevation 84 (B-E) . Converse Ward Davis Dixon,Inc. -6- As reported by Metropolitan Engineers during the previous investiga- tions, groundwater observations were made of the water levels in the borings at the time they were drilled. In December 1967, eight piezom- eters were installed at various locations around the plant site to ob- serve the fluctuation of groundwater throughout the year. These con- sisted of Clayton well point screens with 1 1/4-inch diameter PVC riser pipes to the existing grade. The tips were set at depths of 21 to 38 feet below the then present ground level , i .e., elevation 85 to eleva- tion 98. The locations of the piezometers are. shown in Appendix .B and the measured groundwater elevations are tabulated at the upper right of the plate. The measurements show that the groundwater level fluctuates over the year--being higher in the winter months and lower in the late summer. The maximum groundwater level observed in the piezometers was elevation 112 and the minimum was elevation 107--the difference in water levels between piezometer locations on a given day ranged from 0.6 foot to 1.4 feet. DISCUSSION AND RECOMMENDATIONS General It is understood that the foundation levels for the planned Phase I Expansion structures will range from elevation 102.5 at the center of the secondary sedimentation structures to elevation 121 at the primary treatment structures. Based on our review of the settlement records of the existing structures, it is concluded that .preload filling will permit the structures to be supported by foundation slabs and footings provided comparable settlements are acceptable. Subject to the recom- mendations discussed below, satisfactory behavior of the structures may be anticipated following construction. { Converse Ward Davis Dixon,Inc. -7- Settlement Record Review Prior to fill placement during the previous contracts, settlement gauges were installed either on the original ground or the excavation bottom and periodic settlement measurements were taken during and following filling. When construction at structure locations required abandonment of the gauges, the records were transferred to nearby permanent settle- ment points on the structures. Additional settlement points also were • installed on the structures later to observe differential settlement following construction. At secondary sedimentation tanks 1S, 2S, 3S and 4S, the natural soils were excavated to elevation 108, replaced with compacted fill to eleva- tion 112 and random fill to elevation 125 during site preparation Con- tract 61-5. Additional preload fill was placed to elevation 132 for 3 1/2 months prior to constructing the tanks. The tanks are supported by a base slab at elevation 111.83 with the center sump extending to elevation 108. During excavation and prior to pouring the base slab, rebound measurements averaged 1.4 inches at the centers of the tanks. Settlement points were established at the quarter points of the slabs following slab pour and then transferred to the tops of the walls prior to backfilling. The settlements from slab pour in September 1963 to February 1980 are shown at the upper part of Drawing 2. Partial preload fill was placed for tanks 5S, 6S, 7S and 8S during Con- tract 62-6. Placed directly on the original ground surface, the random fill varied from elevation 127 on the west to about elevation 121 on the east. Additional preload fill was placed to elevation 132 for seven months prior to constructing these tanks in 1972. The tank base slabs are at elevation 107.75 with the center sump base at elevation 102.5 and are supported on six inches of drain rock and six inches of uncompacted granular fill placed directly on the natural soils. The settlements which have occurred since completion of the. tank walls are shown at the lower right of Drawing 2. Converse Ward Davis Dixon,Inc. -8- For the purpose of comparing the two support methods, the settlements of tanks 1S through 4S following wall completion are shown for a similar time period at the lower left of Drawing 2. As shown, tanks 5S through 8S have settled about 65 percent more than tanks 1S through 4S in the first 7 1/2 years following construction. In part, it is believed that this is due primarily to the compacted fill reducing the rebound and thus the recompression under the earlier tanks. Constructed in 1963-1964, the existing aeration structure is supported on compacted fill at about elevation 111. The natural soils were exca- vated to elevation 108 and replaced with compacted fill to elevation 112 and random fill to elevation 125 under the site preparation contract. Continuous records since construction are available only for the north- west corner where 2 1/2 inches of settlement has been measured from Sep- tember 1963 to February 1980. However, additional settlement points were established in September 1970. The observed settlements from that time to February 1980 are shown at the right of Drawing 3. During that period of 9 1/2 years, about 70 percent of the settlement occurred in the first 5 1/2 years and about 30 percent in the next four years as shown at the left of Drawing 3. The average settlement rate reduced from about 0.1 inch per year for those first 5 1/2 years to 0.05 inch per year over the latter four years. The existing primary treatment structures are supported on compacted fill placed during the initial site preparation contract. The easterly structure was constructed in 1963-1964 and settlements of about 1/2 inch at the northeast corner, one inch at the northwest corner and about 2 1/2 inches at the center have been measured through February 1980. At the center, two inches occurred in the first nine years and about 1/2 inch in the next seven years. The westerly structure was constructed in 1971-1972. From February 1972 to February 1980, settlements of about 1/2 inch were observed at the northeast and northwest corners over the deeper hopper sections and about 3/4 inch to one inch at the high level tank section. Converse Ward Davis Dixon,Inc. -9- On-site Borrow Area Excavation It is understood that the high ground northeast of the plant is under consideration as a source of fill for site preparation. Designated Borrow Area A on Drawing 1, the ground rises to about elevation 200. A portion of the knob was excavated during Contract 61-5 and the material used as random fill . Towards the lower part of the excavation, it was necessary to rip the material with a dozer. In general , the material . could be loaded by scrapers; however, some rock fragments up to five feet in diameter could not be ripped. Difficulty was experienced in handling the material in wet weather. A boring B-1 drilled during the initial site exploration extended to elevation 120. As shown by the boring log in Appendix B, weathered to fresh unaltered sandstone, andesite and tuffaceous breccia was encoun- tered in the boring. The boring data and surface reconnaissance was supplemented by four test pits dug with a backhoe at the locations shown on Drawing 1. While some sandy silt was encountered at the surface of TP-3 and TP-4, predominantly silty clay to clayey silt (highly weathered rock) was encountered down four feet to seven feet where refusal was met with an International Harvester 3414 backhoe. Sieve analyses run on representative samples from the test pits indi- cated that 35 to 64 percent of the material was finer than the No. 200 sieve. Because of the high silt/clay content, the material will be quite sensitive to increases in moisture content and would be easily disturbed by construction traffic when wet. Because of these charac- teristics, the material will be difficult to handle in wet weather. The material would be acceptable as random or area fill for preload weight. Borrow Area B is located in the dike at the east property boundary. Constructed as part of Contract 71-6, the dike contains unclassified material , including topsoil , and is assumed 'to be quite variable. It is expected that most, if not all , of the material would be moisture sensi- tive and difficult to handle in wet weather. Converse Ward Davis Dixon,Inc. -10- Site Preparation The planned foundation levels will extend into the underlying natural 1 soils, except at the high level part of the primary treatment structure. Based on our review of the settlement records of the existing struc- tures, it is recommended that preload fills be placed for the proposed secondary sedimentation structures and the primary treatment structures. Fill need not be placed for the aeration structures. At the secondary sedimentation structure, it is recommended that the area be preloaded to elevation 132 for a period of at least six months before constructing the units. The preload fill should extend ten feet outside the tank periphery on the west and east and slope down at not steeper than 1H:1V (horizontal to vertical ) to the west and 2H:1V to the east. .. At the south, the fill should extend at least ten feet south of the north wall of the chlorine contact channel and slope down to the crest of the dike. At. the north, the fill should extend across the location of the mixed liquor channel and slope down at not steeper than 3H: 1V, but preferably to the crest of the dike. At the primary treatment structures, it is recommended that the fill be placed to elevation 130 and extend at least 30 feet beyond the limits of the structures and slope down at 5H: 1V. It is recommended that the pre- load fill remain in place at least six months before constructing the structures. The time the actual preload fill is left in place will de- pend on the settlement rates which occur. Where the fill will be placed on the existing original ground surface, it is recommended that the existing sod or grassy surface remain and not be stripped or broken. Removal of this organic mat would destroy the supporting value of the surface and cause soft or rubbery spots to develop during initial fill placement. Trees and brush should be cut off at the surface. At the primary structures, topsoil and sod should be stripped from the existing fill area between elevation 122 and eleva- ' tion 118. The new fill should be notched into the existing slopes. i . Converse Ward Davis Dixon,Inc. -11- Random fill has already been placed below foundation level over part of the primary structure location. Therefore, random fill may be used for the new fill at both the primary structures and the secondary sedimenta- tion structures. The material for random fill may be any type provided that it does not contain organic matter or debris and that it can be satisfactorily placed, operated across, and be susceptible to sufficient compaction in order that future settlement of the fill itself will not be objectionable. The use of granular material for preload random fill would have the ad- vantages of rapid placement, easy compaction, placement could continue during periods of inclement weather, and the granular material could be used later for backfill around structures. Granular material meeting gradation of Metro Type A or Type B material would be acceptable. How- ever, the selection of random fill material could be left to the con- tractor subject to the recommendation that, if the material is at exces- sive moisture content or such that during wet weather construction equipment cannot operate across the fill without heavy rutting, the work should be suspended until satisfactory operations can be resumed. It is recommended that the random fill be placed in 12-inch loose hori- zontal layers and be compacted. If granular material is used, it is our opinion that adequate compaction can be obtained by routing the hauling equipment evenly across the layer so as to give complete coverage before i , placing additional layers. If clayey or silty soils are used, it is recommended that compaction be obtained with at least two complete passes of a loaded sheepsfoot roller, each layer being compacted before additional layers are placed. In addition, the hauling units should be routed so as to give even distribution over the fill layers. Consolidation of the underlying compressible soils will occur under the weight of the preload fills. This will be reflected as settlement of the fill and the original ground surface. In addition to soil con- ditions, the settlement will also vary with fill height. At the secon- dary sedimentation' structures, settlement analyses indicate that fill settlement for B-59 conditions and fill to elevation 132 above original Converse Ward Davis Dixon,Inc. -12- ground' surface is expected to range from six to eight inches. For B-12 soil conditions and similar fill depths, the settlement is expected to range from four to six inches. The settlements of course will be less where existing fill is already in place, probably on the order of about two inches where the fill is presently at elevation 126. At the primary structures, existing fill ranges up to elevation 132. At the southeast corner of .the easterly structure, the ground surface is presently at about elevation 123. Based on B-17 soil conditions and fill to elevation 130, it is estimated that the settlement will be about four inches. For B-B conditions at the northeast corner, settlement on the order of 8 to 12 inches is expected. Near B-C,. it is expected that six to eight inches of settlement will occur. It is expected that the settlement near the northwest corner will be less than two inches. Allowable Bearing Values The proposed secondary sedimentation structures are understood to be similar to tanks 5S through 7S and will be supported at elevation 107.75 with the center sump at elevation 102.5. The 135-foot by 345-foot aertion structure will be supported at about elevation 111 with the RAS pipes founded at elevation 107.5. These structures will extend beneath the existing fills into the underlying natural soils. Similarly, the primary structure hoppers extend to elevation 106 and will be supported on natural soils. The base of the high level slab will range from ele- vati on 119.5 adjacent to the hoppers to elevation 121 at the north end and be supported on random fill . The allowable bearing values will be controlled by settlement rather than soil strength. The supporting soils will have been preloaded by fill . The existing structures supported on the natural and fill soils have performed satisfactorily where bearing pressures have not exceeded preload pressures by about 500 pounds per square foot (psf) . In view of this performance, an allowable bearing value of preload stress plus 500 psf at the foundation level may be utilized for dead plus permanently- applied live load. This bearing value may be increased by one-third for short-term wind and seismic loading. Converse Ward Davis Dixon,Inc. -13- It is understood that pressure relief valves will be installed in the base slabs to reduce the hydrostatic uplift during maintenance. A six-. inch layer of drain rock should be placed beneath the slab to provide a drainage path to the relief valves. For an area two feet square at each valve, the thickness of the drain rock should be increased to 12 inches. To prevent the penetration of concrete into the drain rock during pouring, a plastic membrane should be provided beneath the slab. Material meeting the following gradation requirements would be satis- factory for use as drain rock: U.S. Standard Percent Passing, Sieve Size by Dry Weight 1 1/2 inch 100 3/8 inch 0 - 2 It is recommended that a filter layer at least six inches thick be pro- vided between the bottom of the drain rock and the top of the subgrade material . Material meeting the following Metro Type A gradation re- quirements would be acceptable: _.... U.S. Standard Percent Passing, Sieve Size by Dry Weight 3/4 inch 100 3/8 inch 70 - 100 No. 4 55 - 100 No. 10 35 - 95 No. 20 20 - 80 No. 40 10 - 55 No. 100 0 - 2 Excavation The proposed construction will require excavation into the underlying natural soils. It was reported that during the initial site prepara- tion (Contract 61-5) the repeated passage of excavation equipment caused "pumping" or "boil" conditions in the natural soils at various locations Converse Ward Davis Dixon,Inc. -14- on the site. Metropolitan Engineers recommended that the operation of construction equipment below elevation 115 be restricted to prevent dam- 1 age to the supporting foundation soils. Where the total of all equip- ment passages over the same spot did not exceed three passes per day, operation of construction equipment was permitted between elevation 115 and elevation 112. Except for small compaction equipment, no equipment was operated directly on natural or fill foundation soils below eleva- tion 112. It is understood that this was satisfactory and we concur in this recom- mendation for construction of the structures. Groundwater Control Provisions must be made for the proper groundwater control in view of the depth of excavation required below the observed groundwater table. The silty fine to very fine sandy or clayey silt soils may not yield troublesome quantities of water because of their less permeable nature than the coarse granular materials. However, seepage caused by the groundwater trying to flow into the bottom during excavation can cause a softening and loosening of the bottom and a resulting loss of strength of these soils. It will be necessary to excavate into sands which underlie or are inter- bedded with finer-grained soils. Since these sands are below the water table, they will be water-bearing and under a hydrostatic head that will be equal to the depth below the groundwater table. If these underly- ing or interbedded soils are not dewatered prior to excavation, they will form "boils" or become "quick" when encountered in the excavations. This can also occur where the excavation does not extend completely down to the sands but a layer of silty soil remains at the bottom of the excavation. It is recommended that the static water level be drawn down and maintained during construction at least two feet below the base of the excavation, to minimize or eliminate "quick" or "boil " conditions in the supporting soils. In certain instances, pressure relief of an underlying sand layer will be necessary. Since observing the static Converse Ward Davis Dixon,Inc. -15- groundwater level within or immediately underlying the excavation will not necessarily reflect the hydrostatic pressure conditions underlying the silty layers, liberal use of piezometers or observation well points is advisable. Of course, dewatering systems should not be shut down during off-work hours, on weekends or holidays until the structures are constructed and backfilling completed to at least the static groundwater level and adequate resistance to uplift is attained. On the basis of the piezometer measurements, groundwater will be encoun- tered in open excavations at elevations between elevation 112 and eleva- tion 107, depending on the time of the year. The static water level should be drawn down and maintained at least two feet below final exca- vation grade during excavation to prevent damage to the foundation soils. Where limited excavations extend three feet or less below the natural groundwater levels, cased open sumps could be permitted for dewatering provided they are properly filtered to prevent the removal of fines. Excavations extending below that depth will require well points. Sanding around the well points will be necessary to provide filtering as well as drainage of interbedded sand layers or lenses. Dewatering of excavations will be necessary adjacent to existing struc- tures. Therefore, the installation and operation of dewatering systems should be carefully carried out so as not to damage or endanger the existing structures. Backfill Much of the on-site excavated material will be saturated silty very fine to fine sand or clayey silt. Because of the high moisture content, it will not be possible to properly compact these soils. Where subsequent backfill settlement is not a consideration, excavated material can be used for backfill . Where some moderate settlement can be tolerated, im- ported granular material or select sandy or gravelly excavated material meeting Metro Type A or Type B gradation should be used. Metro Type B gradation is: Converse Ward.Davis Dixon,Inc. -16- U.S. Standard Percent Passing, Sieve Size by Dry Weight 3 inch 100 1 1/2 inch 95 - 100 No. 4 35 - 100 No. 10 10 - 100 No. 40 0 - 60 j No. 100 0 - 30 No. 200 0 - 10 The uniformity coefficient should be 2.5 or greater. The Type A and Type B material should be placed in layers not exceeding two feet in thickness and each layer compacted by two passes of a mechanical compactor such as a vibratory plate or a vibratory drum roller. Where backfill settlement must be restricted, it is recommended that Type A or Type B material be used for backfill . The material should be placed in eight- to ten-inch thick loose layers and each layer be compacted by mechanical or power-operated compaction equipment to 95 percent of the maximum dry density as determined by ASTM D698, method D prior to placing subsequent lifts. Where the backfill will be used to . support foundations or will be placed lower than adjacent foundations, it is recommended that the backfill be compacted to 100 percent of the ASTM D698, method D maximum dry density. Around structures ,and behind retaining walls, if it will not be used to support foundations, it is recommended that the backfill be compacted to 95 percent of the ASTM D698, method D maximum dry density. Lateral Earth Pressures The lateral earth pressure against backfilled walls is dependent on the properties of the backfill , the stiffness of the wall , and the slope above the wall . The majority, if not all , of the walls are understood Converse Ward Davis Dixon,Inc. -17- to be rigid walls in that they are restrained from yielding or deflect- ing laterally at the top a distance equal to 0.005 times the wall height. Thus, the lateral wall pressures are "at rest" and are greater than those for the "active" condition where yield is permitted. Assuming that compacted granular backfill will be placed, it is recom- mended that the walls be designed for a lateral equivalent fluid pres- sure of 55 pounds per cubic foot (pcf) above and 90 pcf below the groundwater table for a rigid wall retaining a level backfill . The latter figure includes the hydrostatic pressure. For an unrestrained wall , it is recommended that a lateral equivalent fluid pressure of 35 pcf above and 80 pcf below the groundwater table be used for level backfill . Structure Uplift Resistance The groundwater was observed to range from elevation 112 to elevation 107 in the piezometers. As discussed earlier, the groundwater is. ex- pected to fluctuate with the seasons. In addition, groundwater levels will be influenced by site subsurface drain systems. The majority of the structures will extend below the groundwater level to various depths. Thus, they will be subjected to uplift forces due to hydrostatic pressures acting on the base of the structures. The weight of the structures may not be sufficient to resist the uplift forces. If not, additional resistance to uplift would be provided by soil friction on the walls from the compacted backfill . An increasing value of 20 pounds per square foot per foot of depth (psf/f) may be used above the water table and 10 psf/f below. Alternately, the base slab could be extended beyond the walls and the weight of the backfill above the slab lip utilized. The backfill unit weight may be taken as 130 pcf above and below the water table. This includes hydrostatic pressure below the water table. For this configu- ration, the additional resistance to uplift will be provided by soil Converse Ward Davis Dixon,Inc. -18- friction acting across a vertical plane extending up from the edge of the slab lip rather than soil friction against the wall . Values of 25 psf/f above and 12 psf/f below the water table may be used. Settlement Measurements As pointed out in previous reports, the observation of foundation be- havior is a vital necessity in the effective utilization of this site. This is particularly important during and following site preparation and the Phase I expansion since these structures will be supported directly . on natural soils rather than on previously-prepared and preloaded com- acted foundation fill used forth e p t e existing structures. Therefore, every effort should be made to maintain continuous records of the set- tlement gauges during and following this construction. While it should be the contractor's responsibility to protect the gauges, measurements should be taken by the engineer. The gauges must be protected from damage at all times. Where additional preload fill is to be placed, existing gauges should be extended. Dur- ing excavation, the riser pipes should be periodically reduced. Accur- ate elevation measurements should be made immediately before and after each extension or reduction of the riser pipes. Where possible, gauge measurements should be transferred to permanent points on structures to maintain observation continuity. Where new fill is to be placed as part of this contract, additional settlement gauges should be installed to observe settlement behavior prior to placing the fill . The recommended locations for these addi- tional gauges are shown on Drawing 4. Limitations The findings and recommendations of this report were prepared in accord- ance with generally accepted professional engineering principles and practice. We make no other warranty, either express or implied. The findings and recommendations are based on the results of the field and Converse Ward Davis Dixon,Inc. -19- laboratory investigations, combined with an interpolation of reported soil conditions between boring and test pit locations. If conditions are encountered during construction that appear to be different from those shown by the borings and test pits, this office should be notified so that we may review and verify or modify our recommendations. Respectfully submitted, CONVERSE WARD DAVIS DIXON, INC. c'°�Eugene R. McMaster a �� L:; � .�t� Vice President W " — + 13 � ERM/kpp `" o (10 copies submitted) {. '/ONO' ' Converse Ward Davis Dixon,Inc. ‘ \--\ \ , \ \ \ - x�l[` IILI\ / , 1 I / \\ it t410,,:„. •\'‘‘C.\.‘ \I • `��,'\ \ �'Ill` \`\ \\\ ' 1 \ 1 I I i I II I \ • \1 III\\ \\\ ,\ I` 11 \ \ \ /'\\ \\ r\ • \\ -I:::,\Itl\/:/\11:IIII ' I' 1 I \ 0 1110ral1" \ \ ..�\ \ '\ `�\\1 1 \ I \ oli r I ' t \ \ ` \ \ 1 \ , \ — \ / 1, ii,,. t_ \ '-°- • 11.1111. l'i i 1 i r t„, , r 1 1 I , / ,, , \ . s t t-tr — • EXIST. WATER \ .1/s' ' r 11 a L ` li110 , \ ,, STORAGE TANK :2, \ r, �� ; i\ m r ' ` , ,, : If BCIRROW AREA " " ;i;''.; I �\.............. \ '\ , , , -.,& ... : : ,.. - \\\\ i gyp_` ;�,.,\6�',/ �� /,�,,, , • i'I \\\\ t1 I\III I/ , , 0� ' p'' I I I �r\`` , \ r ^' ,.. ..AYAJED , I ,,/3 , I , I \ 1.' B— r I , I /� /��// ice``\ , i 1 I � ` it,,",,,,, \. �_\a `\ CO1dZR1�CT ,) 1 \I�\l I • J•BrB 'l /i-- �.. %„/'�ii%\ \, \�\ �`` / \ a ji '\ ,Ii11 \� 'p� \ y \ 1 ,r'" ; i2.` ii/ ,tl I...-��5��!�� --��\\\\ ;� r I'1 I • Nr 'Ira ' %�4 `=.i7,,:ii/1,',c�,��5,��' \\\\\\\\ I ''I,\ \%.� �;�\>�"' ,1 4'�', ..� \\ I, ///I"/z. �`. `- r_;�' sue� \\\\\\\\\ \, I `�`\ BbR�OW AREA,, « n�• ,', ,; ,„- - r, '�'I \ \,�C1. ? _li .k , //i,�/ `ir. ,I'f4'aIS��' � \\\\\\\\\ 1 ' `\` , _ 'i 1 \ ,\\ -23 . r :,1 `',1i \ic\ Ur /r •r ,''i-.-!-sc ? ,-g5:s126 \\\\\ . I I _ N -- / \ RY,i ti 1 .tRPt\ON .i+.�' 133 B-27 B—1 7 1\1,,,`o\I\\„ r �\\\Ilk,. `` �`••� 1, 11 I rry 0 P o\N� P 'gt;R • B—6 0 ,, \ ,, ; �,��' �� . - 1 j V tit' 0U\L P�M O i\'\`,\\�,II\, \ 1 ` ��ii�_ ��;1^ ' ' O \ \ B-14 • 6V\\,�\NG •t\ON AA.RF- ,\"i,\I\;�` \ ,`'i � � • /^..- 1' o \ \ 1 ti0 oc P ^k ;;, G`\\\._ �\►�,,O ct a 1. \% \ !lfl�C1 v\Gt R "u \1 / Z % \ s REP SIR ?,\\\ //j / pp� f� ,2 f I ‘I 1 \ oitt -. `\ e ems_, __ / N ` \'\\ ,,\\fit,,,•,,,, \ / m ii k3c 15 • 1 5 ,.-.,-,_\ `•t,,N_-___ --,,,,. \ B- i • � ' CPC\0 " '‘\'\ / i r , .r1e_ --41[. _ - Fe Q\ME 7S `,e t`I \\i\\,' ,/ 1 � ' 0 _ -� NPNGE ' r R`! 3S : ss _ \ 1 �WO /� 1 - - --- ,j1d 1j5 •,,,:\ '» ttPe�\Lp\N r 1 S SSG 1 \i 0 .\ , -�y., S 8S i ,:' VFtE \ Ar. r o -..,? a NZ pNG 4 S S11° " • P I J 100 0 100 200 ' -1I26 - — _ a -- SCALE IN FEET SITE PLAN LEGEND: RENTON PLANT - PHASE 1 EXPANSION SITE PREPARATION Scale NOTED Project No. Renton, Washin ton Date 81-5148 B-1 • Approximate boring location (from previous exploration) g JULY 1981 for Municipality of Metropolitan Seattle Prepared by JM Drawing No TP-1 ■ Approximate test pit location . Checked by ERM 1 ConverseWard Davis Dixon Geotechnical Consultants Approved by ERM 1.34 1.32 1.28 1 S 1.24 1.50 3S 1.96 1.22 1.13 1.52 1.35 1.67 2S 1.48 1.66 4S 1.63 6S 8S 1.88 1.22 SETTLEMENT OF FIRST FOUR SECONDARY SEDIMENTATION TANKS AT QUARTER POINTS FROM SEPT 1963 TO FEB 1980* • .64 .60 1.6 1.08 .86 1 S .73 .60 3S .97 1.19 5S 1.24 . 1.14 7S 1.46 .71 .65 1.24 1.31 I....70 .54 1.36 1.22 .86 2S .67 .71 48 .86 1.18 6S 1.08 1.12 8S 1.22 1.03 .78 1.15 1.12 0 0 FROM MAR1964 FROM OCT' 1972 TO JUNE 1971 TO FEB 1980 SETTLEMENT OF EXISTING SECONDARY SEDIMENTATION TANKS AT QUARTER POINTS* 0 * Settlement in inches a a Q .. RENTON TREATMENT PLANT-PHASE I EXPANSION SITE PREPARATION Project No. CO Renton, Washington 81-5148 n for Municipality of Metropolitan Seattle 23 Drawing No. 0 fl* r ,��► �onverseWardDavisDixon Geotechnical Consultants 2 „O 'm+,...,-:*- '$•'41:7,04" it-5*!1ito..S.N 4-'--, _ .4. .0 t 4C-' ,,-tt .>. +,.--•Jk..1SCP S01,k'7 :w'.-. rr 44A4A,.-ti,a4A,rxat„a t ;,. _ti-.0•• h.8 ..>sa..•F;'.: ...�^xa...••r.. ,r 1 a-'1r ram:..•r.. �;M_r�y: S-air: .r.�r.6+: ;r::,<.r r„:.ae+uC:.'.aa: "W",.+..=,-.1. r,:rt t, •.._ .. •Vr?'. • FROM SEPT 1970 TO FEB 1980 .58 .88 .88 • • .88 .60 .92 • • .41 .47 .60 • FROM MAR 1976 TO FEB 1980 • .22 .30 .31 • • • .26 .20 * .32 .16 .11 .13 • _ c 0 0 * Settlement in inches 0 SETTLEMENT OF EXISTING AERATION TANKS a RENTON TREATMENT PLANT-PHASE I EXPANSION SITE PREPARATION ProjectNo. • Renton, Washington 81-5148 for Municipality of Metropolitan Seattle Drawing No. `jon,/erJceY1/ard®aV{SD{x®{7 Geotechnical Consultants . 3 ryv�ia :M^,,7-r��,,.; n. .,.?Ny^rt i."w!i; ,'i::'?'�i`. arwvr.�+'r:*rx`r. w. ..,'ic,f:+�t.i.:;3 r:K, r;r'e,,3`�='.a a`z.?laraq=`rs1.,,:r 0.... � uFms d,„ 2 .o.. r`u..: . ,h�5'i. . _x ti..,�'Ksl+'+ •a•r':.,��ecAr,i."Ti^4pst`i�.,*S'`,!.`.ga.0k? LL- .. a�Y1n''i.. m:,^vs,,•nS.p..M i1.4",:,.'`t.,.. v'.,-a l..ii..p5aRi.r,v'c:i:',.",..;10F" n,...y„1, 4,04000tvetttl>T,S?4; ?"Q st'D. ex- met I-3/3?"Hot& ,_— IN 70f'Of CAP I c.I NI f/NAG f/GG I.RAD: • ?''Sr0.. PIPE TYR I SOJC PLACED AROUND gA4e 8-5/8°¢eo6T$ compare ,°Cq. PIPE TO Imp fNGG P ACeatENT W/r/eX.NUTS-,OtT up 7JGHT CPGq. rYP. J'r... ORIt6 /2-3/3Z"HOtdS. , C4 HOLtS IN 7i/ d 6EVe6S o - SPACE-0 ?"J re- 4 HOCES (N MC/' GeVEG 5HAG6 BE • 11". v . j DRIGGED fl 70°L. 1111 'TYP ?" srD PJPE COUPGNC ?LAYERS Of ?x 6 ROUH D.f CONTkw!) mo // kg SP/MD TO95THe e _aim ally. gR0UN0 ELEVATION PLAN NO SCALE NO SCALE INSTALLATION PROCEDURE 1. THE SETTLEMENT GAGE SHALL BE INSTALLED ON THE NATURAL GROUND SURFACE OR ON THE EXCAVATION BOTTOM PRIOR TO FILL PLACEMENT AT THE LOCATIONS INDICATED IN THE TABLE BELOW. INSTALLATION SHALL BE UNDER THE SUPERVISION OF THE ENGINEER. 2. THE BASE OF THE SETTLEMENT GAGE SHALL BE CAREFULLY BEDDED ON A THREE-INCH LAYER OF PAVING SAND SUCH THAT UNIFORM BEARING OVER THE ENTIRE BASE IS OBTAINED. 3. THE FIRST PIPE SECTION SHALL BE INSTALLED AND THE JOINTS TIGHTENED FIRMLY WITH WRENCHES. THE PIPE SHALL BE ERECTED PLUMB BY ADJUSTMENT OF THE GRAN- ULAR FILL UNDER THE BASE AND CHECKED WITH A CARPENTER'S LEVEL. 4. HAND COMPACTED GRANULAR FILL SHALL BE PLACED AROUND AND ABOVE THE BASE OF THE GAGE FOR A MINIMUM HEIGHT OF THREE FEET. THE HAND COMPACTED FILL SHALL PROVIDE THE NECESSARY STABILITY FOR THE SETTLEMENT GAGE DURING THE INITIAL FILL PLACEMENT. 5. THE CONTRACTOR SHALL ADD PIPE SECTIONS TO THE GAGES AS THE FILL PLACEMENT I SETTLEMENT TOTAL COORDINATES a PROCEEDS. THE MAXIMUM LENGTH OF ANY PIPE SECTION SHALL BE SIX FEET. AS GAGE PIPE LENGTH N E EACH SECTION IS ADDED, HAND COMPACTED FILL OF THE SPECIFIED TYPE AND COM- A 20 15 FEET 525 2750 PACTION FOR THAT LOCATION SHALL BE PLACED AROUND THE PIPE SECTION. THE A 21 16 FEET 410 2750 LEVEL OF THE HAND COMPACTED FILL SHALL BE MAINTAINED AT OR ABOVE THE LEVEL A 22 16 FEET 525 2910 OF THE IMMEDIATE ADJACENT MACHINE PLACED FILL. A 23 19 FEET 410 2910 6. THE GAGES SHALL BE PROTECTED BY HEAVY TIMBER RAILINGS TO PROTECT THE GAGE A 24 9 FEET 1070 1860 AGAINST THE IMPACT OF CONSTRUCTION EQUIPMENT AND SHALL BE MARKED BY A MARK- A 25 15 FEET 1300 1860 ER TRIPOD DURING THE ENTIRE FILL PLACEMENT. THE TRIPOD SHALL BE OF SUCH A A 26 11 FEET 1190 1720 HEIGHT AS TO BE CLEARLY VISIBLE TO EQUIPMENT OPERATORS. A FLASHER OR RO- A 27 14 FEET 1300 1720 o TATING TYPE LANTERN SHALL BE ATTACHED TO THE TRIPOD AND KEPT LIGHTED DURING A 28 5 FEET 1300 1550 •io OPERATIONS TO SERVE AS WARNING TO EQUIPMENT OPERATORS. U .O m O V > 2 a. NEW SETTLEMENT GAGE LOCATIONS a. RENTON TREATMENT PLANT-PHASE I EXPANSION SITE PREPARATION Project No. Renton, Washington 81-5148 In for Municipality of Metropolitan Seattle - o o Drawing No. z ConverseWard Davis®Oxon Geotechnical Consultants 4 f c, 0 *, n.' -.g.u'�`. titwFi .vt,v-::..3o. ,e.,,4„,,.;Ni i c .•fir 'a t"F: t-R a li' ,,,,:a 0 �i x 4I a) 1\ ert-ton itx A 161 APPENDIX A FIELD_ EXPLORATIONS AND LABORATORY TESTING The supplementary exploration of Borrow Area A was carried out by digging a series of four test pits (TP-1 through TP-4) at the locations indicated on Drawing 1. } The test pits were excavated with a tractor-mounted backhoe (Interna- tional Harvester model 3414 furnished and operated by Metro) capable of penetrating to depths of about 12 feet. The logging and sampling of the the test pits was carried out under the continuous supervision of our soils engineer at the time of the excavation. In addition, groundwater conditions and the stability of the excavated tests pit walls were noted. . Representative bulk samples of the soils encountered were se- cured for visual examination, classification and limited laboratory testing. The soils encountered are shown on the test pit logs, Drawings A-1 through A-4. _ _ All test pits were backfilled at the conclusion of the field explora- tion. . Test pit locations and elevations were determined by taping and hand leveling based on topographic maps furnished by you. Representative samples obtained from the test pits were subjected to limited laboratory tests. As an aid in evaluating the suitability for use of fill , sieve analyses were run on certain soil samples. The resulting grain-size distribution curves are presented on Drawings A-5 and A-6. Converse Ward Davis Dixon,Inc. **WO:.,:>t k.Mx,;''i'i4tM7ti��',Y�'Y" i �-'}wp'�"'r"�'�,- ..4;4*,-51a`"•'�$v;aWa'v`.�+ira��"4nk�S�t�.""v`+ �^��"`?7" Skc ''"% `t-t'K. .�'M�w3^a��'��y':"^.k«,�.vtsa!�Wn`;: .�"'7 c`''.M-R�v.��``✓?.a+ti+:.,+;""ais:0. LOG OF TEST PIT NO. 1 Location: Borrow Area A Elevation: Approx. 168 Surface Conditions: Grass at o .0 DESCRIPTION REMARKS 3 N V light brown to brown, fine 1- to medium sand, some gravel ; slightly moist, med. dense abundant weatherer 2-� 1 SM CLAYEY, SANDY SILT light brown silt differen- rock which may be broken by hand to ti ted from brown silt by 3- 70� dip to south clayey silt 4-, 5- = becomes dense at 52' as 6- noted by operator 7 Bottom of test pit at depth 7' due to refusal with 8" International Harvester 3414 Backhoe Very minor sloughing 9- No groundwater -encountered Completed 6/26/81 . 10- 11- 12- 13- 14- -` 15 r ... .... S'i:i .Ir.rl..t.,E:'.r WsR:%. -,�...P x . �.h.i revf.'1 'e":..1...,. n...k..:r..-.[�. .:....i k1. '+..i..':,.i.rur rl,f •r:..w.ri .1 '..Y.'it- .. `f+ . ., RENTON TREATMENT PLANT-PHASE I EXPANSION SITE PREPARATION ProlectNo. Renton, Washington 81-5148 for Municipality of Metropolitan Seattle Drawing No. ConverseWard Davis Dixon Geotechnical Consultants A— 1 J+,uraa?:f1-4 iaF� _ �. k:. _:. :w.;"' ,, cr.T;Y; ?. �.: '*`a„ s;'�.:cR��.T i��'��,,n?> '".',�• �r-+' `�'� v. �_aa�.:�''�' r�''� LOG OF TEST PIT NO. 2 Location: Borrow Area A Elevation: Approx. 182 Surfiace Conditions: Tall weeds & grass a,} y -8 DESCRIPTION REMARKS c o a N light brown, brown, dark 1- brown, intermixed with clayey silt, little gravel highly weathered 2- SILTY CLAY and fine sand; slightl moist rock up to 6" dia. medium dense easily hand broker to silty clay & 3- 1 . . clayey silt 4- grades to gray-brown, clayey SILT; slightly moist, medium dense 5- 6- 7 $ Bottom of test pit at depth 7' due to refusal with International •Harvester 3414 Backhoe Very minor sloughing 9- No groundwater encountered Completed 6/26/81 10-1 11- 12- 13- 14- 15 ro RENTON TREATMENT PLANT-PHASE I EXPANSION SITE PREPARATION Project No. Renton, Washington 81-5148 for Municipality of Metropolitan Seattle Drawing No. Converse and Davos Dixon Geotechnical Consultants A-2 b r { 0a~^3 610.:. °`Y'i. .* 3 .. . > rlia2 �t:"b - r€•'•� ,, �"�, k< a`..�w,��;�';""t. •a.t,.�;3«:"� S"'.'�'�.«" Itx'�� u`+��,.`�;J4�� X;��} •;�'.R�3,e�,'",,a'�� w�$x,� :• �, 2'u�'°? '.ae''`r�`;2��.� ".?t�'a?cr o ; LOG OF TEST PIT NO. 3 Locations Base of Borrow Area A Elevation: Approx. 130 Surface Conditions: Shrubs, balckberry bushes (1) ,+? .' E 4 DESCRIPTION REMARKS 0 c SANDY SILT dk. brown, organics; slightly 1- ____ (Toesoil ) moist, loose SANDY SILT light brown to brown, some 2- ____ clay; sl . moist, med. dense CLAYEY SILT brown, some fine sand; 3- slightly moist, med. dense weathered rock which can be easily 4 1 indistinct bedding, broken to clayey undeterminable dip 5- silt 6- • Bottom of test pit at depth 62' due to refusal with International Harvester 3414 Backhoe 8 No sloughing No groundwater encountered 9~ Completed 6/26/81 10- 11- 12- 13- 14- 15 • 0 `o a RENTON TREATMENT PLANT-PHASE I EXPANSION SITE PREPARATION Project No. Renton, Washington 81-5148 for Municipality of Metropolitan Seattle Drawing No. Convers°4.'1f and Davis Dixon Geotechnical Consultants A-3 ;,;. ,,, r ? i t LOG OF TEST PIT NO. 4 Location: Base of Borrow Area A Elevation: Approx. 132 Surface Conditions: Blackberry bushes, trees a151 , - DESCRIPTION REMARKS .0 0, V)) V) SANDY SILT dk. . brown, organics; 1- (Topsoil ) slightly moist, loose ___ _ 'light'brown to dark brown, abundant, highly. CLAYEY SILT some fine sand; slightly weathered rock up 2- moist to moist, med. dense to 11/21 dia. may be Indistinct bedding, undeter- broken .by hand to 3- 1 minable dip clayey silt becomes. dense. at 2 2' 4- intermixed with gray, clayey silt at 3' ; difficult diggirg/ 5� Bottom of test pit at depth 4' due to refusal with International Harvester 3414 Backhoe No sloughing 6-, No groundwater encountered Completed 6/26/81 7-� 8- 9- 10- 11- 12- 13- 14- , 15 s M:n-.=•M1n„..:r.=.✓d ..n:eY,.'.-k✓..'M;•..'R.+'.7*....i. '--r;r7•YaIUA• .b/i3,">$"WKaati'"' S t'+'.-SLw"23w.r,Cv..:.A.:L..,y.. •:m... +:'s..a... r:» ..Y.:..+_x.Y,,R.. -N. ^nrfi•".1iv.:.'.s. *+...rFi r, Project RENTON TREATMENT PLANT-PHASE I EXPANSION SITE PREPARATION Project No. Renton, Washington 81-5148 for Municipality of Metropolitan Seattle Drawing No. Converse\Ward Davis Dixon Geotechnical Consultants A-4 --.RAIM -•- -NALY----SOIL- ---",DESI• .N:0,-- t... 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MSi.,I.P,1: ' e=a 2 2 0 2 8 SECC, 0.2' ScJ/MENihr.O,, pr. , ...) p � � j'?LJCTUl7:5 .!-/0 1 DN4 �� 0 — -7\:, B29 1 I L _ - h !,6 1IAeRAT,o/v sr.?uCrURE--- lDH3 IIii s - I�992 20005 - -- , \ xaao c ,>�� ems,3 \ 1. ■ o � ) (C:-.11112)( 44-- — - a'! DH5 ■ d NORTH-Sour" `12 rUA,.EL DH2 I + I13 • i I --r� ----. A/.S a-lB--- 1-- - -----7?'..111.-1 1 I OI1. I I �� - . I / 12- 1111111 - - / M:INTEVANCE BLDG / GRIT NANOL•A.G • - STRUCTURE I Eli !■■■■Iffl■II 2/I*L1 a.c a PUMA D:Sc,aaRG= /e /�11�/ l !4 ,Ui ■■■■■1�� `1 \ SrRUCTUR� - [] A■■■ �I■ • 7!—L - .... ..: '17 11-1:- 87 1-7 OUMP BU/LO/NG rll11 I I ( 1 I), • • .—PR,MARy ;2EATMENT STQUCT ,/ N/715.00 ' SOUTH CHLORINE CONTACT. .----WATER STORAGE ANC 8-I CHANNE( LLt - / LEGEND `I \. •RAW SEWAGE CONDUITS AN TYPE 14Q SETTiEMENT GAGES '` \ h] TYPE I SEffLEMENT GAGE `\ \ (8 TYPES 5ET1(EMENT GAGE /BOO E 1_�. •• \ /'JOO£. 8.2e \ _ _ \\ aas \ \ \ _ - . i / 7:::: • . l.rp_. 'r--�r-r' 1 \\ \\ - • \ i I ~9•4 \ r # IC On 5 24 • G l' \-N / A ZS -.JD.Y1lN/STRA'(C)N /NCLUE•\' cnNrao. n • '9 ? 2 BU/L D,14G . 2 n § THIS DRAWING REDUCED /p.c:X. h :36J c TO HALF SIZE 2z METROPOLITAN ENGINEERS • L. ' ' RENTON SEWAGE TREATMENT PLANT B- 1 R 2OOA RENTON I-•5O' �,�MAY 1962 SYSTEM PLOT PLAN v -J \ \ • e�, jy %-' p-rs ' —- / A a ) - - — z � - , T — S— — � — \\ . —"\ % /b'�p•3Oy ) `�"ii�/ ' 1-�i ce \\ i - © ' V. �\ \ �r�- - 1\ \ ' 1 I. i LEGEND ,1-�p-B ` \ 1 \ , 4: 00 N NEW CONSTRUCT/ON EXISTING CONSTRUCT/ON too ortA4.51%__ ,� i- 11\ ,\ 1\ A•/1 ;\`1\ ------ FUTURE CONSTRUCT/ON �/ // C' \..„.........A3‘ Art \ °� A•!s\ 1 \ -- BOUNDARY of rroRK j� 1 \ 11 \ \ © ; // I 1 ` \\ \\ \\ e- \ \ \ s SURVEY MONUMENT ! �►,\ \\ ORif�r A RE \\�\\\ ��- A 1�\`I a� A EXISTING SETTLEMENT GAGE ,/ \ sfR �� \\ t p\ $1 / - /'" / \ �.yf0........- i \`\ /f �• \1\\\ A SET7L@MENT GAGE RECOMMENDED P• TO BE //STALLED aY CONTRACTOR % / •� / , \'' �~ A•s D 1 \\ ` --�---\\ • BORINGS DRILLED FOR TN/S r3TRArrpN� �•' A1.06•\ ' �•••�• frON •, 0 A4D \\\�� -�� i�i-' '� \ ■ EXISTING PIEZOMETER LOCATION • ADM oio0 \�'' . \ AtRJOfuR C1vRt� �-- �_ f1_`00,--L-�.,t \ \ AU N \ .'' D1R fro/ g;tNsp/r� -�� \�s�'�- s =.�\ / �1\ 1 �pN ..1 5O�fg{ \t EA Bag - / I t M pR�MA�tNt pia -- ,,�g�.�`I,/ : ‘\;1 / NOTE: FOR LOCATION OF SETTLEMENT POINTS 50�R� \rleALICTle4011 `\ • ( _ \ \ ON EX/STING PRIMARY TREATMENT CX �f Nf fPo Mtoreg is \ �� -E 5f� M4`1j / \\ r-- 1 1 STRUCTURE JS AND TANKS /8,2S,SS A4S \ ;• ® SEE PLATE C-23 fRaWeE 8'• 1fR�j s `, e•ss `e�b D \\\„ i 1,1 �\\\ \�\I\1 11 -.7.,\.% ,N‹ .1 1 % ''• 8-61 l' 1--1 "---- 1:\-c-: ' riA 40 - 54111111111e /- 41/4.0•11 Ig ‘114 ....-, ....); .--." , • \ / f Nam' • sS ' r ti -- _. - -- � ►rA 6048 • . act Ogg LANK A• '. - - ... - $ INftrµ t r5 >t n a s • 1'-� ��% - 10 \ ' cy NNts 562 - - K 16 1 -: �- I �oRp's° fAN - c' - s •S \ �� 1 t , se _ _ _,✓ CNN` • ;�. / �N ' 4YLe� • •' .ARi Z. .- S ! pp .P �� - - �� Nft O� O Ay;D N Br°'� 5tcfp . I % • • LOCATION PLAN BORINGS, SETTLEMENT GAUGES a PIEZOMETERS SCALE I'• 200' • PLATE B-2 • . • • GROL/NDw4rE,! &E✓AT/ONS "PENTON S.T.P. P/EZOMFTERS • ZS J II i�/ 1\ PG PO OS P/? 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' ..� furuRG oav?TRucT/oN - D - __ - BOUNDARY OF sYORK m SLcomt� ,ION So SURVEY MONUMENT PAyEtpN 51R� • ■ XLST/NG-P/EZOMETER LOCATION OCT' S -!RACKS -- N.AR' - • GROUNDWATER LEVEL MEASUREMENTS SCALE I"' 200' PLATE B-3 • r I -, B 0 RIl / q,- O ,zo - SOP ! !VG m - Et_ //L._ . D :L.LEL': 1/-9-5. F-L //7.3 CR/LLED: 11-9-54 S \�// to l/S v •.. MODERATELY CIRM TO soPr AL c_uv/AL 1 //o SOlL5 MODERATELY F-aRM i/o TO S At- VIAL- •. EO O LU o C) \\ - 3O/L5 3 K \ �� i rn D 10 I rn0 n I __ N /o- Jam N � \ -10 C I -� BROWN 5/L7Y SANG �` /D� , - r f W ITH SOME 6.RAY Q ' r — D i snors lN kj rn - 4 CJ z! _AND5TU�/E f �1 \ ME Divn.4 A . D DO I- " /P'LY' CLFAN Zi rn ;O /00 - �'...AGI< 5AAJ C z Z 1G) l oo c) 0 U) 'i _ o z _ zrn l O fl rl -T1 ?: M —1 :;: : UN 0 9 S r%�;i G) ' `.. BROWN 5/LTV SAND N 0 r E = 90 FI P M (DE:an.1nn 5E0 SAWt'STO7 /E ?) ELEVAr/ON = /00.o EQG/ALS MEAN SEA LEVEL Ei-E/A770A/=0.0 0 I -p _. , _ _ ,_ _ _ _... _ . . _ ______ F D � m 9 O R I +�J c © B O R ".J L"@ 1r5 EL /13.O DR/L Z.EL)://-9 59 tic - EL /74.5 OR/L LED:. //-J-:;9 ' � 1l0 N \ 1 \ o ! \ /05 ti 3 . 1 z ��, h \r \/o� 11-'OCER4cn ,3ToSOFT ALL uV/Q/- `j\ SO1L5 -1 O L- `Z 1 , 100 K.dOOERATELY �'/L7M m D mr } OSpST ALLc./V/AL. Z H �4 I F/AMER i Z Z 0 G) I 0 = O I 95 2 zm I1 -n FAIRLY F1RM 95 m (71 -I � \ 23 -I co N 0 FI&/ ' E SAI .0 Z : O RE FUSA L. L. GRAY F'I NE TO 85 MEDIUM . AND - N 0 T E = (rx-r-o,v1Po5- D SAND- 3TONE , D1 r L LED W/TN GONr,,V c/oc 5 0 A-LIG-14T Au6ER !'/a+ al EL_EVAT/OIL/•/OO,O E:QuA<-5 MEAN • SEA LEVEL ELEVATION= 0. 0 , CALCULATION SHEET METROPOLITAN ENGINEERS , SEATTLE , WASHINGTON 1 ---, e 4 R / 1.1 G u /1s ri .EL //3 5 DRILL EL): //-9-59 . ' \ A I 4 RA L'e.' Y E/RM To SOFT ALLOY/AL . SO/L S - ' j //0 1 • 1 l05 • i - SOME .54AJ 5 1 I I ,. 100 . u; 1 95 1 \ . I I 1 I NOTE = qo '; E L VAT1O1‘1= IOQ. O • EQuALS ILEA/`/ SEA LE/ .L ELE VAY/OIl/s-O.O 85 I GQE8N SPAY SAJD 1 W1T- SOME C,rA'AVEL • • - ; S LI DCE//L Y FIRM i (DEGOMPOSEO SAND- sroi-IE ?) _ 80 . IDATE BY JOB NO TITLE - I 1 R - 100 , LOG OF BORING ,B-6 CALCULATION • SHEET METROPOLITAN ENGINEERS SEATTLE , WASHINGTON • By/? ;`/J Lc /acI I FL E,� /( / i`R _� , EL; ..//l/0-/2/{ 9 _; I T1 ;kk bKLi' '•VvV FR.ABL4" Sit.IYSA"/L% /'✓/T1 �'= T,5 `T1 •L/ :T A/ t,/ 7-`' 5.4.VD Vc.•'✓F•; . • • ;. (i•:E.LL•,��CriL;>r•C SAD ,1..__ "�/.':i:!L."ram ,I . • -- /•y.5 >-.'•%':...Ev' ....4 b•p �:;:_ /Bo . . . _ I -} { ,t_.JG.2:, /L:-V .5C,�7- A/1/L, p1./AB2 Cal I .I � I f ! i1 /7 ,, t_t �LLE - .BRAYS/LTY S.�-i,VD. VERY f/R,•-/ , { G __I 1/ .(=7Z> - /VE /E;c'EG A/✓OES/TT, 1 I i_ , .SL. y7�/'' =, .€L.-7d_E ) • t, I -.- - i 1.-y / Qi �L, I• i 11 I . , I , � ,; T J PAR T L Y n/rA:N.E�E'EG 6 EA/-6,�Y .G, 4•:-! 'TL`F.4CE�'[:S 8REC C/A /1//TH F�AS.4-1.5/JT.;i F PC',C/-�idY:E'/T/C B, S;iT i 50 i • .. • . . • 1 ''• <' , I I I. 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