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Home My WebLink AboutLUA14-000968_Report 1,)<:, ,:._-:, ,_; ~ STATE OF WASHINGTON, COUNTY OF KING } AFFIDAVIT OF PUBLICATION ,< PUBLIC NOTICE --.:__. Linda M Mills, being first duly sworn on oath that she is the Legal ~ Advertising Representative of the ...... ~_) ~·--__;_:, Renton Reporter a weekly newspaper, which newspaper is a legal newspaper of "Cneral circulation and is now and has been for more than six months ·ior to the date of publication hereinafter referred to, published in the English language continuously as a weekly newspaper in King County, Washington. The Renton Reporter has been approved as a Legal Newspaper by order of the Superior Court of the State of Washington for King County. The notice in the exact form annexed was published in regular issues of the Renton Reporter (and not in supplement form) which was regularly distributed to its subscribers during the below stated period. The annexed notice, a: Public Notice was published on August 22, 2014. The full amount of the fee charged for said foregoing publication is c sum of $129.50. ~,-,; '· '.,, _,.,,-.~ / _1.-A-!t,U/ /; / .I~,, 0,.---1. .. ..., lirid~·M: Mills Legal Advertising Representative, Renton Reporter Subscribed and sworn to me this 22nd day of August, 2014. : /:... ~ "! "LI! '1-/J..w.z._ ( 7Z,>~,~[d,<_ Kathleen C. Sherman, Notary Public for the State of Washington, Residing in Buckley, Washington ,,,,,,'\~~.\.ltHtttrt .... ........ , \_t:'.~fiJ f.)' ''1,, ~ ~$\ ..,_,,,m.1.1.11;_/~' ~A \i. 2"~~~~\SS/Q~/\/0-"-~ = 20 _,orA <>+,. 1J " -:r, ~ -,...,..,. "$~ -_;., ~ := ==..... '':.c:, --~ s. :. ::: ; ..... • :z;: J> :::: ,;. u,; .... m::: <::: ~ -l. ~ ~-03 ::. -; ~ v~ C --~J"',1,_ V Q"L! .;:' ,E z ...... ,,, ~, ..;:--i~ "'1, 9~16 ,,. ........... -~ -=--',,1 OJ¢-1 i;l1111~\\\\'-'-' ,o ..:;"::-~ 1 11 h;.,,.SH1NG ,,, ,,, ,., ............. 11111,;'j\\\\\'-'\'-"< NOTIC[OF El\ VIH.ONMENTAL DETERJ\.llNATIOJ\ ENVIRONMENTAL REVIEW CO\IMITTEE REJ\TUJ\, WASIU'IGTON The Environmental Review Committee has issued a Determi- nation of Non-Significance Miti- gated (DNS-M) for the following project under the authority of the Renton municipal code. Central Renton Sewer Intercep- tor Reline & Upsizc LlJAl4-000968 Location: Rights-of-\\'llY of N 4th St bct\.\·ccn Sunset Blvd N and Factory Pl N . .Thc appli- cant, City of Renton Wastewa- te1 Division. is requesting SEPA Environmental Review and Critical Areas Exemption for sewer interceptor reline and upsizc within the right-of-way of N 4th St, between Sunset Blvd N at the east and Fadory Ave N at the west The right- of-way area is approximately 46.000 sf. The project \Hmld upsizc and replace 122 linear feet of existing 12-inch con- crete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear kct of 24-mch concrete pipe using cured-in-place pipe. The work area includes HNSF railroad area and a steep slope of approximately 40 percent slope over 20 feet, between the nat area next to Sunset Blvd N and BNSF railroad tracks. Pipe upsi.e".ing would occur within the steep slope area. A geokch- nical engineering report has been submitted. The Critical Areas Exemption would be for the upsizing of the existing utility facility in the steep slope area. Appeals of fhc Di'\S-M must be filed in writin11: on or before 5:00 p.m. on September 08. 2014. Appeals must he filed in writing together with the re- quired fee with: Hearing Examiner c/o City Clerk_ City of Renton. 1055 S Grndy Way, Renton, WA 98057. Appeals to the I !earing Examiner arc governed by RMC 4-8-110 and more information mav be obtained from the Renton· Citv Clerk's Office. 425-430-6510. · Published in the Renton Reporter on August 22. 2014. # l 118700. ~- ., (· ----1R®filu:®Iffi e NOTICE I PlEAS£ !Ndl/1)( Tl-IE PftQIECT NUM ------- CERTIFICATION I,_ l,, ${'.cc ..f;?,,2/11 H ,J . hereby certify that 3 copies of the above document wee, po,ed io ~ mosp;rnoos places 01 oea,by >he dem<bed p1operty :/ / Date: <Z-Z-2-/Y Signed~;;;{;<f',;fk~ STATE OF WASHINGTON ) ) 55 COUNTY OF KING J · I certify that I know or have satisfactory evidence that J , , d-,- 0 Roi,,: I a.,,J ·· signed this instrument and acknowledged it to be his/her/th€lr free and voluntary act for the ~'i'~;.1.ll1t1 · d · h · ---::('i'OWs-,l.lrfl,oses ment1one int e instrument. ---~, "'"' !'i>IS' 1'1 . . ( i To .:?' o : '-2 2 ,J ilf 1[""¥, rev,, u )-;, ff .2: 6 .,0 1 Alfi,. ~ Notary Puhll9ln and for the State of Washington f \u :.:.:~ ~ R Notary (Print): / ">. \ 8-29·' 0 ___ \Jr ___ . \ ... I. .. , '". _:p.__,.Dl'-"-',V"'-"?"'l'-)..,_· _____ _ .., JI ............... ......:f-• .,. ~ "~ M · t t . A .J ' , " ' OF w,...., ,· y appom men expires: vcj· c,, r """ 1 eO(j . ~ ,,,,...... -----=_t-'-'--'----:,-= ...... _,_ _____ _ ; Agencies John Hobson City of Renton STATE OF WASHINGTON Dated: A u'jn,i i 1 lc,i 'i I See Attached Applicant Owner Public in and for the State of Washington Notary (Print): ____ f:...,. ·~u' J ... G.· 4. _~ ... f_,_'r<_.iJA"'<'-"' ·f'.a:·.r_-J,_------------- My appointment expires: .A:::~'.(-5 t Jc.~ ,2 o c 1 Central Renton Sewer Interceptor Reline and Upsize LUA14-000968, ECF, CAE template -affidavit of service by mailing , • Dept. of Ecology** Environmental Review Section PO Box 47703 Olympia, WA 98504-7703 WSDOT Northwest Region * Attn: Ramin Pazooki King Area Dev. Serv., MS-240 PO Box 330310 Seattle, WA 98133-9710 US Army Corp. of Engineers • Seattle District Office Attn: SEPA Reviewer PO Box C-3755 Seattle, WA 98124 Boyd Powers*** Depart. of Natural Resources PO Box 47015 Olympia, WA 98504-701S KC Dev. & Environmental Serv. Attn: SEPA Section 35030 SE Douglas St. #210 Snoqualmie, WA 98065 Metro Transit Senior Environmental Planner Gary Kriedt 201 South Jackson Street KSC-TR-0431 Seattle, WA 98104-3856 Seattle Public Utilities Jailaine Madura Attn: SEPA Coordinator 700 Fifth Avenue, Suite 4900 PO Box 34018 Seanle, WA 98124-4018 AGENCY (DOE) LETTER MAILING (ERC DETERMINATIONS) WOFW -Larry Fisher• 1775 12th Ave. NW Suite 201 Issaquah, WA 98027 Duwamish Tribal Office• 4717 W Marginal Way SW Seanle, WA 98106-1514 KC Wastewater Treatment Division • Environmental Planning Supervisor Ms. Shirley Marroquin 201 S. Jackson ST, MS KSC-NR-050 Seanle, WA 98104-3855 City of Newcastle Attn: Tim McHarg Director of Community Development 12835 Newcastle Way, Ste 200 Newcastle, WA 98056 Puget Sound Energy Kathy Johnson, 355 110'" Ave NE Mailstop EST llW Bellevue, WA 98004 Muckleshoot Indian Tribe Fisheries Dept. * Attn: Karen Walter or SEPA Reviewer 39015-172"' Avenue SE Auburn, WA 98092 Muckleshoot Cultural Resources Program• Attn: Ms Melissa Calvert 39015172nd Avenue SE Auburn, WA 98092-9763 Office of Archaeology & Historic Preservation* Attn: Gretchen Kaehler PO Box 48343 Olympia, WA 98504-8343 City of Kent Attn: Jack Pace Acting Community Dev. Director 220 Fourth Avenue South Kent, WA 98032-5895 City of Tukwila Steve Lancaster, Responsible Official 6200 Southcenter Blvd. Tukwila, WA 98188 *Note: lfthe Notice of Application states that it is an "Optional DNS", the marked agencies and cities will need to be sent a copy of the Environmental Checklist, Site Plan PMT, and the Notice of Application. **Department of Ecology is emailed a copy of the Environmental Checklist, Site Plan PMT, & Notice to the following email address: sepaunit@ecy.wa.gov **"'Department of Natural Resources is emailed a copy of the Environmental Checklist, Site Plan PMT, & Notice the following email address: sepacenter@dnr.wa.gov template -affidavit of service by mailing John Hollson David Christensen City of Renton DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT _ __, _______ r.) /;i: Ci!)' of/L ........ ····· -.'"I\!sJlIGJl PLANNING DIVISION CERTIFICATE OF EXEMPTION FROM CRITICAL AREAS REGULATIONS EVALUATION FORM & DECISION DATE: PROJECT NAME: PROJECT NUMBER: PROJECT MANAGER: OWNER/ APPLICANT: PROJECT LOCATION: PROJECT DESCRIPTION: Central Renton Sewer Interceptor Reline & Upsize Critical Areas Exemption LUA14-000968, ECF, CAR Kris Sorensen, Associate Planner City of Renton, Wastewater Utility Attn: John Hobson 1055 S Grady Way, 5th Floor Renton WA 98057 Right-of-way of N 4th St between Houser Way N and Sunset Blvd N. City of Renton prooses a sewer interceptor reline and upsize within existing improved and unimproved right-of-way. The right-of-way area is approximately 46,000 sf. The project would replace and upsize 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in-place pipe. The work area includes BNSF railroad area and a steep slope where the right-of-way is not improved of approximately 40 percent slope over 20 feet, between the flat area along Sunset Blvd N at the east and the lower BNSF railroad tracks at the west. Pipe upsizing would occur within the steep slope area. CRITICAL AREA: Geological Hazard -Protected Slope EXEMPTION JUSTIFICATION: Pursuant to RMC4-3-050.C. "e.ii" & "g.ii", of the Critical Areas Regulations is hereby granted: City of Renton Department of Comr , & Economic Development Central Sewer Interceptor Reline & Upsize Critical Areas Exemption Certificate of Ex 'on from Critical Areas Exemption LUA14-000968 Page 2 of 3 g. Maintenance and Construction -Existing Uses and Facilities ii. Maintenance and Repair -Any Existing Public or Private Use: Normal and routine maintenance and repair of any existing public or private uses and facilities where no alteration of the critical area and required buffer or additional fill X materials will be placed. The use of heavy construction equipment shall be limited to utilities and public agencies that require this type of equipment for normal and routine maintenance and repair of existing utility or public structures and rights- of-way. In every case, critical area and required buffer impacts shall be minimized and disturbed areas shall be restored during and immediately after the use of construction equipment. e. Roads, Parks, Public and Private Utilities ii. New Trails, Existing Parks, Trails, Roads, Facilities, and Utilities -Maintenance, Operation, Repair, and the Construction of New Trails: Normal and routine maintenance, operation and repair of existing parks and trails or the construction of new trails, streets, roads, rights-of-way and associated appurtenances, facilities X and utilities where no alteration or additional fill materials will be placed other than the minimum alteration and/or fill needed to restore those facilities or to construct new trails to meet established safety standards. The use of heavy construction equipment shall be limited to utilities and public agencies that require this type of equipment for normal and routine maintenance and repair of existing utility structures and rights-of-way. In every case, critical area and required buffer impacts shall be minimized and disturbed areas shall be restored during and immediately after the use of construction equipment. FINDINGS: The proposed development is consistent with the following findings pursuant to RMC section 4-3-0SOC.5: 1. The activity is not prohibited by this or any other chapter of the RMC or state or federal law or regulation. 2. The activity will be conducted using best management practices as specified by industry standards or applicable Federal agencies or scientific principles if submitted plans are followed and the conditions of approval of this exemption are met. 3. Impacts will be minimized and disturbed areas will be immediately restored, if submitted plans are followed and the conditions of approval of this exemption are met. DECISION: An exemption from the critical areas regulations is approved for upsizing and installation of 24-inch wide sewer pipe within the protected slope area of the N 4th St right-of- way. City of Renton Department of Com1 1 & Economic Development Certificate of Exe Central Sewer Interceptor Reline & Upsize Critical Areas Exemption DATE OF DECISION ON LAND USE ACTION: SIGNATURE: Jennifer Henning, AICP, Planning Director Department of Community & Economic Deve(apment in from Critical Areas Regulations LUA14-000968 Page 3 of3 -z /1.1. I zt1 iq Date The above land use decision will become final if the decision is not appealed within the 14- day appeal period {RCW 43.21.C.075{3); WAC 197-11-680). APPEALS: An appeal of this administrative land use decision must be filed in writing together with the required fee to the City of Renton Hearing Examiner, Ci/ o. f Renton, 1055 South Grady Way, Renton, WA 98057, on or before S:00 p.m., on "I /'5 · · , 2014. RMC 4-8-110 governs appeals to the Hearing Examiner and additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, {425) 430-6510. RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by the approval body. The approval body may modify his decision if material evidence not readily discoverable prior to the original decision is found or if he finds there was misrepresentation of fact. After review of the reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within the 14-day appeal time frame. EXPIRATION: Five (5) years from the date of decision 11 / 1-'2 . 2014. August 18, 2014 Department of Community and Economic Development C.E."Chip"Vincent, Administrator Washington State Department of Ecology Environmental Review Section PO Box 47703 Olympia, WA 98504-7703 Subject: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION Transmitted herewith is a copy of the Environmental Determination for the following project reviewed by the Environmental Review Committee (ERC) on August 18, 2014: SEPA DETERMINATION: Determination of Non-Significance Mitigated (DNSM) PROJECT NAME: Central Renton Sewer Interceptor Reline & Upsize PROJECT NUMBER: LUA000968, ECF, CAE Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on September 8, 2014, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and information regarding the appeal process may be obtained from the City Clerk's Office, (425) 430-6510. Please refer to the enclosed Notice of Environmental Determination for complete details. If you have questions, please call me at (425) 430-6598. For the Environmental Review Committee, Kris Sorensen Assistant Planner Enclosure cc: King County Wastewater Treatment Division Boyd Powers, Department of Natural Resources Karen Walter, Fisheries, Muckleshoot Indian Tribe Melissa Calvert, Muckleshoot Cultural Resources Program Gretchen Kaehler, Office of Archaeology & Historic Preservation Ramin Pazooki, WSDOT, NW Region Larry Fisher, WDFW Ouwamish Tribal Office US Army Corp. of Engineers Renton City Hall • 1055 South Grady Way • Renton, Washington 98057 • rentonwa.gov DEPARTMENT OF COMMUI AND ECONOMIC DEVELOPMENT ENVIRONMENTAL {SEPA) DETERMINATION OF NON-SIGNIFICANCE -MITIGATED {DNS-M) PROJECT NUMBER: LUA14-000968, ECF, CAE APPLICANT: City of Renton, Wastewater Utility PROJECT NAME: Central Renton Sewer Interceptor Reline and Upsize PROJECT DESCRIPTION: City of Renton Wastewater Division is requesting SEPA Environmental Review and Critical Areas Exemption for sewer interceptor reline and upsize within the right-of-way of N 4th St, between Sunset Blvd N at the east and Factory Ave N at the west. The area is approximately 46,000 sf and is located within the Aquifer Protection Area "2". The project would upsize and replace 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in-place pipe. The work area includes BNSF railroad area and a steep slope of approximately 40 percent slope across approximately 20 horizontal feet, between the flat area next to Sunset Blvd N and BNSF railroad tracks. Pipe upsizing would be within the steep slope area. A manhole just west of the BNSF tracks would be replaced. A geotechnical engineering report has been submitted. The Critical Areas Exemption would be for the upsizing of the existing utility facility in the steep slope area. PROJECT LOCATION: LEAD AGENCY: Public right-of-way of N 4th St., between Sunset Blvd N atthe east and Factory Ave N at the west. City of Renton Environmental Review Committee Department of Community & Economic Development The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse impact on the environment. An Environmental Impact Statement (EIS) is not required under RCW 43.21C.030(2)(c). Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4-9-070D Renton Municipal Code. These conditions are necessary to mitigate environmental impacts identified during the environmental review process. Because other agencies of jurisdiction may be involved, the lead agency will not act on this proposal for fourteen (14) days. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on September 8, 2014. Appeals must be filed in writing together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and more information may be obtained from the Renton City Clerk's Office, (425) 430-6510. PUBLICATION DATE: August 22, 2014 DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT DATE OF DECISION: SIGNATURES: Terry Higashiyama, Administrator Community Services Department AUGUST 18, 2014 ~lu/ ,11. "'I J} d ~ Mark Peterson,(dministrator Date Fire & Emergency Services I \ ! c;,h rol,y C--. £ \ /, c--- Date c.E. "Chip" Vincent, Administrator Department of Community & Economic Development ~ Date DEPARTMENT OF COI\ .... UNITY AND ECONOMIC DEVELOPMENT DETERMINATION OF NON-SIGNIFICANCE-MITIGATED (DNSM) MITIGATION MEASURES AND ADVISORY NOTES PROJECT NUMBER: APPLICANT: PROJECT NAME: LUA14-000968, ECF, CAE John Hobson, City of Renton Central Renton Sewer Interceptor Reline & Upsize PROJECT DESCRIPTION: City of Renton Wastewater Division is requesting SEPA Environmental Review and Critical Areas Exemption for sewer interceptor reline and upsize within the right-of-way of N 4th St, between Sunset Blvd N at the east and Factory Ave N at the west. The area is approximately 46,000 sf and is located within the Aquifer Protection Area "2". The project would upsize and replace 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in- place pipe. The work area includes BNSF railroad area and a steep slope of approximately 40 percent slope across approximately 20 horizontal feet, between the flat area next to Sunset Blvd N and BNSF railroad tracks. Pipe upsizing would be within the steep slope area. A manhole just west of the BNSF tracks would be replaced. A geotechnical engineering report has been submitted. The Critical Areas Exemption would be for the upsizing of the existing utility facility in the steep slope area. PROJECT LOCATION: LEAD AGENCY: MITIGATION MEASURES: Rights-of-way of N 4th St. between Sunset Blvd N & Factory Pl. N. The City of Renton Department of Community & Economic Development Planning r· v'sion 1. The a~plicant shall comply with the conclusions and recommendations stated in the Geotcchnical Engineering Report, pr·pared by Aspect Consulting, dated May 28, 2014 (Exhibit 2). 2. The applicant shall prepare an inadvPrtent discovery plan as requested by State Department of Archeology and Histrric Preservation {Exhibit 8). ADIVISORY NOTES: The followinp: notes are supplemental information provided in conjunction with the administrative land use action. Because these notes are provided as information only, they are not subject to · · :c appeal process for the land w ·, actions. Planning: 1. RMC sectinn 4-4-030.C.2 limits haul hours beh1een 8:30 am to 3:30 pm, Monday through Friday unless oth : ''!ise approved by the Developmcc. Services Division. 2. Commercial, multi-family, new single family and other nonresidential construction activities shall be restricted to the hours between seven o'clock (7:00) a.m. and eight o'clock (8:00) p.m., Monday through Friday. Work on Saturdays shall be restricted to the hours between nine o'clock (9:00) a.m. and eight o'clock (8:00) p.m. No work shall be p crmitted on Sundays. 3. Within thirty (30) days of completion of grading work, the applicant shall hydroseed or plant an appropriate ground cover over any portion of the site that is graded or cleared of vegetation and where no further construction work will occur within ninety (90) days. Alternative measures such as mulch, sodding, or plastic covering as specified in the current King County Surface Water Management Design Manual as adopted by the City of Renton may be proposed between the dates of Noveml'"' :st and March 31st of each year. The Development Services Division's approval of this work is rec·:·· •C: prior to finu I inspection and ap 0 ·oval of the permit. 4. The applic::1'. :rnv not fill, excavate, stack or st: e any equipment, dispose of any materials, supplies or fluids, c:· ::0 ,iny equipment, ins:all im1-·vious surfaces, or compact the earth in any way within the arc; :'.cfined by the drip line of an',' t, e to be retained. The applicant she' c•·cct and maintain six foot (G') I· h chain link temporary construction fencing around the drip lines of;,' retained trees, or along the per': ·cter of a stand of retained trees. Placards shall be placed on fenc':c.· •:very fifty feet (50') indicating tlv· words, "NO TRESPASSING -Protected Trees" or on each side of ti;, . :,ci ng if less than fifty feet (50'). '.:·· e access to individually protected trees or groups of trees shall be f 0 c! ad signed. Individual trees ,.1 :1 be fenced on four (4) sides. In addition, the applicant sha I! . -' e supervision whenever cq: · ·ent or trucks are moving near trees. ERC Mitigation Mec1surPs ::ind Advisory Notes Page 2 of 2 OF ENVIRONMENTAL DETERMINATION ISSUANCE OF A DETERMINATION OF NON-SIGNIFICANCE· MITIGATED (DNS-M) POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION PROJECT NAME: Central Renton Sewer Interceptor Reline & Upsize PROJECT NUMBER: LUA14-000968, ECF, CAE LOCATION: Rights..gf-way of N 4th St. between Sunset Blvd N & factory Pl, N. DESCRIPTION: City of Renton Wastewater Division rs requesting SEPA Environmental Review and Critical Areas Exemption for sewer interceptor refine and upsize within the right-of-way of N 4th St, between Sunset Blvd Nat the east and Factory Ave N at the west. The area is approximately 46,000 sf and Is located within the Aquifer Protection Area "2". The project would upsize and replace 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-In-place pipe. The work area includes BNSF railroad area and a steep slope of approxlmately 40 percent slope across approximately 20 horizontal feet, between the flat area next to Sunset Blvd N and BNSF railroad tracks. Pipe upsizing would be within the steep slope area. A manhole just west of the BNSF tracks would be replaced. A geotechnical engineering report has been submitted. The Crltical Areas Exemption would be for the upsizing of the existing utility facility in the steep slope area. THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERC) HAS DETERMINED THAT THE PROPOSED ACTION DOES NOT HAVE A SIGNIFICANT ADVERSE IMPACT ON THE ENVIRONMENT. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on September 8, 2014, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by City of RMC 4-8-110 and information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 430-6510. IF THE ENVIRONMENTAL DETERMINATION 15 APPEALED, A PUBLIC HEARING WILL BE SET AND ALL PARTIES NOTIFIED. FOR FURTHER INFORMATION, PLEASE CONTACT THE CITY OF RENTON, DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT AT (425) 430-7200. DO NOT REMOVE THIS NOTICE WITHOUT PROPER AUTHORIZATION PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION. AuglJst 19, 2014 John Hobson City of Renton 1055 South Grady Way, 5th Fl Renton,WA 98057 Department of Community and Economic Development C.E. "Chi p"Vincent, Administrator SUBJECT: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION Central Renton Sewer Interceptor Reline & Upsize, LUA000968, ECF, CAE Dear Mr. Hobson: This letter is written on behalf of the Environmental Review Committee (ERC) to advise you that they have completed their review of the subject project and have issued a threshold Determination of Non-Significance-Mitigated with Mitigation Measures. Please refer to the enclosed ERC Report, for a list of the Mitigation Measures. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on September 8, 2014, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and information regarding the appeal process may be obtained from the City Clerk's Office, (425) 430-6510. If the Environmental Determination is appealed, a public hearing date will be set and all parties notified. If you h.ave any further questions, please call me at (425) 430-7289. For the Environmental Review Committee, Kris Sorensen Associate Planner Enclosure cc: City of Renton/ Owner(s) Renton City Hall • 1055 South Grady Way • Renton, Washington 98057 • rentonwa.gov DEPARTMENT OF COMMUr ... ! AND ECONOMIC DEVELOPMENT ,-,:CZ City of • _____ _.,,,,,,.-.. rtB t1i0I1 ENVIRONMENTAL REVIEW COMMITTEE REPORT ERC MEETING DA TE: Project Name: Project Number: Project Manager: Owner/Applicant/ Contact: Project Location: Project Summary: Exist. Bldg. Area SF: Site Area: STAFF RECOMMENDATION: August 18, 2014 Central Renton Sewer Interceptor Reline and Upsize LUA14-000968, ECF, CAE Kris Sorensen, Associate Planner City of Renton, Wastewater Utility Attn: John Hobson 1055 S Grady Way, 5th Floor Renton WA 98057 Public right-of-way of N 4th St, between Sunset Blvd Nat the east and Factory Ave N at the west. City of Renton Wastewater Division is requesting SEPA Environmental Review and Critical Areas Exemption for sewer interceptor reline and upsize within the right-of-way of N 4th St, between Sunset Blvd N at the east and Factory Ave N at the west. The area is approximately 46,000 sf and is located within the Aquifer Protection Area "2". The project would upsize and replace 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in-place pipe. The work area includes BNSF railroad area and a steep slope of approximately 40 percent slope across approximately 20 horizontal feet, between the flat area next to Sunset Blvd N and BNSF railroad tracks. Pipe upsizing would be within the steep slope area. A manhole just west of the BNSF tracks would be replaced. A geotechnical engineering report has been submitted. The Critical Areas Exemption would be for the upsizing of the existing utility facility in the steep slope area. N/A 46,000 sf Proposed New Bldg. Area (footprint): Proposed New Bldg. Area (gross): Total Building Area GSF: N/ A, underground N/ A, underground N/ A, underground Staff Recommends that the Environmental Review Committee issue a Determination of Non-Significance -Mitigated (DNS-M). Project Location Map ERC Report 14-000968 City of Renton Department of Community & omic Development nvironmentaJ Review Committee Report LUA14-000968, ECF, CAE CENTRAL RENTON SEWER INTERCEPTOR RELINE AND UPSIZE Report of August 18, 2014 Page 2 of 6 PART ONE: PROJECT DESCRIPTION / BACKGROUND A. EXHIBITS: Exhibit 1: Exhibit 2: Exhibit 3: Exhibit 4: Exhibit 5: Exhibit 6: Exhibit 7: Exhibit 8: Exhibit 9: Exhibit 10: Staff Report (dated August 18, 2014) Geotechnical Engineering Report, Central Renton Sewer Interceptor Upsize Project - Final Draft; Prepared by Aspect Consulting; dated May 28, 2014 Project Plan and Profile Drawing; Central Renton Sewer Interceptor Upsize Project - Sewer Upsize; Prepared by BHC Consultants; dated June 2014 Zoning Map Aerial Photo Environmental Checklist City of Renton Maps -Sanitary Sewer System Lines, Printed August 12, 2014 Department of Archaeology and Historic Preservation letter, dated August 11, 2014 Critical Areas Exemption City of Renton Maps -Steep Slope Maps B. GENERAL INFORMATION: 1. Owner of Record, Right-of-Way: 2. Zoning Designation: 3. Comprehensive Plan Land Use Designation: 4. Existing Site Use: 5. Neighborhood Characteristics: City of Renton Attn: Wastewater Utility 1055 S Grady Way, 5th Floor Renton WA 98057 Project is located in the public right-of-way which has no zoning designation. Commercial Corridor (CC) Improved and unimproved street right-of-way North: PACCAR complex {IH) and vegetated slopes East: South: West: 6. Access: 7. Site Area: BNSF railroad tracks and Commercial uses {CA} Commercial uses (CA) Commercial uses and office (CA} N 4th St, Houser Way N, and Sunset Blvd N 46,000 sf C. HISTORICAL/BACKGROUND: Action Land Use File No. Ordinance No. ERC Report 14-000968 City of Renton Department of Community & omic Development 1vironmental Review Committee Report CENTRAL RENTON SEWER INTERCEPTOR Rt AND UPSIZE WA14-000968, ECF, CAE ...;..;--'-..;_.;;.__ _________ ----------..a......a-- Report of August 18, 2014 Page 3 of 6 Comprehensive Plan Zoning Annexation D. PUBLIC SERVICES: N/A N/A N/A 5099 5100 156 1. Utilities: The project is installation of new sewer pipes by the City of Renton. 11/01/2004 11/01/2004 05/23/1909 2. Streets: N 4th St right-of-way is the location of the proposal with access at the east portion of the subject work area from Sunset Blvd N and easterly access through Houser Way N and Factory Pl N. A section of N 4th St near the steep slope is unimproved. 3. Fire Protection: Fire and emergency services for the project location is provided by the City of Renton Fire Department. I PART TWO: ENVIRONMENTAL REVIEW In compliance with RCW 43.21C.240, the following environmental (SEPA) review addresses only those project impacts that are not adequately addressed under existing development standards and environmental regulations. A. Environmental Threshold Recommendation Based on analysis of probable impacts from the proposal, staff recommends that the Responsible Officials: Issue a DNS-M with a 14-day Appeal Period. B. Mitigation Measures 1. The applicant shall comply with the conclusions and recommendations stated in the Geotechnical Engineering Report, prepared by Aspect Consulting, dated May 28, 2014 (Exhibit 2). 2. The applicant shall prepare an inadvertent discovery plan as requested by State Department of Archeology and Historic Preservation (Exhibit 8). C. Environmental Impacts The Proposal was circulated and reviewed by various City Departments and Divisions to determine whether the applicant hos odequotely identified and addressed environmental impacts anticipated to occur in conjunction with the proposed development. Staff reviewers have identified that the proposal is likely to have the following probable impacts: 1. Earth Impacts: The applicant has proposed to upsize and replace 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in-place pipe. Two alternative methods of pipe replacement were considered within the geotechnical report, both conventional open trench method and pipe bursting method. The geotechnical report provides conclusions and recommendations for conventional open trenching and newer pipe bursting. Trenching is the report's preferred method for pipe upsizing. The report includes trenching work recommendations for excavation, the type and use of backfill, and setting ERC Report 14-000968 City of Renton Department of Community & omic Development CENTRAL RENTON SEWER INTERCEPTOR RELINE AND UPSIZE Report of August 18, 2014 nvironmental Review Committee Report LUA14-000968, ECF, CAE Page 4 of 6 of pipe, as well as replacement of one manhole. A small portion of the project has a slope of approximately 40% which is located between the existing manhole in Sunset Blvd N at the west and a manhole on the east side of the BNSF railroad tracks (Exhibit 10). The pipe would be upsized from 12-inch pipe to a 24-inch pipe. Clearing of blackberry bushes and shrubs would be conducted, primarily where the slope is located, of approximately 400 sf in area. The manhole near BNSF railroad tracks would be lowered outside of the slope area. Approximately 275 cubic yards of soil will be excavated to install the new sewer line and manhole. In the area where the 12-inch pipe would be replaced with the 24-inch pipe (Exhibit 3), there are a number of recommendations in the geotechnical report for open cut sewer replacement, and the upsizing of the pipe, and general earthwork recommendations. Other recommendations fall under "Ground Water" found below. For open-trench construction, the geotechnical report provides recommendations for temporary excavation work, pipe bedding, trench backfill, and trench and pavement restoration. Additionally, the report provides further recommendations for the manhole replacement near the BNSF tracks, construction work dewatering, and for earthwork and erosion control including work during wet weather. Based on the recommendations included in the provided Geotechnical Engineering Report, staff recommends as a mitigation measure that the applicant comply with these recommendations. Mitigation Measures: The applicant shall comply with the conclusions and recommendations stated in the Geotechnical Engineering Report, prepared by Aspect Consulting, dated May 28, 2014 (Exhibit 2). Nexus: SEPA, RMC 4-3-050.J.2 "Special Studies required for work within sensitive and protected slopes." 2. Water a. Ground Water Impacts: Groundwater may be encountered as part of pipe trenching or manhole excavation as identified in the Geotechnical Report (Exhibit 2 page 4). Goundwater ranges from 29 to 34 feet below grade and excavations for the project could extend as much as 5 feet below groundwater. Dewatering is anticipated to be required as part of the project. The recommendations state that temporary sumps and trash pumps would not sufficiently dewater the excavation although considering deep wells and the lowering of water over a large area could likely cause ground settlement over a large area including BNSF rail lines area. Well point dewatering methods are recommended. The site is located within the aquifer protection. Any fill would need to come from a clean source. Mitigation Measures: No further mitigation required. Nexus: Not applicable. b. Storm Water Impacts: Potential liquid spills during construction and possible wet weather and rain could create impacts during construction. The geotechnical report provides guidance and recommendations for work in wet weather. The Environmental Checklist, pages 5 and 6, mentions the use of Best Management Practices during construction to prevent potential liquid spills from entering either ground water or storm water. ERC Report 14-000968 City of Renton Department of Community & omic Development CENTRAL RENTON SEWER INTERCEPTOR RELINE ANO UPSIZE Report of August 18, 2014 Mitigation Measures: No further mitigation required. Nexus: Not applicable. 3. Historic and Cultural Preservation _nvironmental Review Committee Report LUA14-000968, ECF, CAE Page 5 of 6 Impacts: The State Department of Archeology and Historic Preservation provided background information that there may be artifacts in or near the work area and there is an archaeological site associated with the use of this trail approximately 2,500 feet from the project area (Exhibit 8). According to the letter, the project area is in proximity to the Cedar River Pack Trail an ethnographic period trail used by the Duwamish and Muckleshoot Indian Tribes as well as tribes from eastern Washington, such as the Yakima. Archaeological sites are protected from knowing disturbance on both public and private lands in Washington State. The state's RCWs require that a person obtain a permit from Department of Archeology and Historic Preservation before excavating, removing, or altering Native American human remains or archaeological resources in Washington. The replacement pipes are larger than existing pipe and the letter states the existing pipe system may have been placed within or near archaeological resources which may be disturbed by the new project. Staff recommends, as a mitigation measure, that a discovery plan be prepared. Mitigation Measures: The applicant shall prepare an inadvertent discovery plan as requested by State Department of Archeology and Historic Preservation (Exhibit 8) and as recommended by staff. Nexus: SEPA, RCW 27.44 and RCW 27.53.060. D. Comments of Reviewing Departments The proposal has been circulated to City Department and Division Reviewers. Where applicable, their comments have been incorporated into the text of this report and/or "Advisory Notes to Applicant." ./ Copies of all Review Comments are contained in the Official File and may be attached to this report. The Environmental Determination decision will become final if the decision is not appealed within the 14-day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). Environmental Determination Appeal Process: Appeals of the environmental determination must be filed in writing together with the required fee to: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057, on or before 5:00 p.m. on September 5, 2014. RMC 4-8-110 governs appeals to the Hearing Examiner and additional information regarding the appeal process may be obtained from the City Clerk's Office, Renton City Hall -th Floor, (425) 430-6510. ADVISORY NOTES TO APPLICANT The following notes are supplemental information provided in conjunction with the administrative land use action. Because these notes are provided as information only, they are not subject to the appeal process for the land use actions. Planning: l. RMC section 4-4-030.C.2 limits haul hours between 8:30 am to 3:30 pm, Monday through Friday unless otherwise approved by the Development Services Division. 2. Commercial, multi-family, new single family and other nonresidential construction activities shall be ERC Report 14-000968 City of Renton Department of Community & CENTRAL RENTON SEWER INTERCEPTOR Rf Report of August 18, 2014 omic Development ANDUPSIZE ,vironmental Review Committee Report LUA14-000968, ECF, CAE Page 6 of 6 restricted to the hours between seven o'clock (7:00) a.m. and eight o'clock (8:00) p.m., Monday through Friday. Work on Saturdays shall be restricted to the hours between nine o'clock {9:00) a.m. and eight o'clock {8:00) p.m. No work shall be permitted on Sundays. 3. Within thirty {30) days of completion of grading work, the applicant shall hydroseed or plant an appropriate ground cover over any portion of the site that is graded or cleared of vegetation and where no further construction work will occur within ninety {90) days. Alternative measures such as mulch, sodding, or plastic covering as specified in the current King County Surface Water Management Design Manual as adopted by the City of Renton may be proposed between the dates of November 1st and March 31st of each year. The Development Services Division's approval of this work is required prior to final inspection and approval of the permit. 4. The applicant may not fill, excavate, stack or store any equipment, dispose of any materials, supplies or fluids, operate any equipment, install impervious surfaces, or compact the earth in any way within the area defined by the drip line of any tree to be retained. 5. The applicant shall erect and maintain six foot {6') high chain link temporary construction fencing around the drip lines of all retained trees, or along the perimeter of a stand of retained trees. Placards shall be placed on fencing every fifty feet (50') indicating the words, "NO TRESPASSING -Protected Trees" or on each side of the fencing if less than fifty feet (50'). Site access to individually protected trees or groups of trees shall be fenced and signed. Individual trees shall be fenced on four (4) sides. In addition, the applicant shall provide supervision whenever equipment or trucks are moving near trees. ERC Report 14-000968 EXHIBIT 2 GEOTECHNICAL ENGINEERING REPORT Central Renton Sewer Interceptor Upsize Project Renton, Washington Prepared for: BHC Consultants and City of Renton Wastewater Utility Engineering Project No. 140013 • May 28, 2014 FINAL DRAFT :\Aspect 6c ON SULT ING ·1, ' ' j c:w.:o-a-dMM EXHIBIT 3 l ~~ -i ,,;,~·«· .,. _ ..... ..,,. .. " . ~ i:3 ~ !i " z ~ i " ~ g ~ i=:i;: " ~~ ~ oa '• ~ f~ a ~ ~ > il ;f,~ ~i " ~ ~::i ~ 0 g '" tffi ~~ ,-o• •• t· < ! • l l I e ! 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(.) ,SEW 1/2 Sl1E:: IL \: R-8 R-8 0 <j,. aTH pl.. 840 F4W I Feet 0 420 b;!..---1 G4W20 T23N RSE W 1/2 1:9,390 17 T23N R5E W 1/2 Page35o1BO City Limits D (CORJ CommerdaVOfflce/Res1dent1al D (R-4) RasidenHal 4du/ac CJ RENTON D (CV) Center Villa;ia D (R-8) RasidenHalBdu/ac [.:J PotentialAnnBXalion Area CJ (IH) Industrial Heavy D (RC) Resouroo Conservaton Zoning Designation D (IL) lndusbial Light D (RM-F) Residential Multi-Family D ICA) Commeri:ialArterial D (IM) Industrial Medium [:] (RM-T) Resi. Mutt1-Family Tradi~onal D ICDJ Center DownlDwn D (R-1) Residental 1dulac 0{RM-U) Re.si. Multi.family IJ"bir, CerJ\er D (CN) Commercial Neighbortiood CJ (R-10) Residential 1 Odulac D (RMH) Residential Manufadured Homes D (CO) Commercial Office D [R-14) Residentjal 14dulac D (UC-N 1) Urban Center North 1 c:J (UC-N2) Ur boo Center North 2 ~ m ~ --J .... "' w z ;o "' m m ~ -"' N t 9 5428 • 5428 54 5427 5426;.; 5426 . 5425 5425 • 6 • B1W B1E. 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G9 23 T23N 23 T23N 24 T23N 24 T23N '-19 T23N 19 T23N 20 T23N 20 T23N 21 T23N 21 T23N ! 22 T , 23 T23N 23 M aJif 24 T23N 24 T23N ';---f§'T R4EWl/1 i R4EE111 R4EWIII R4EE11f~ •. "'..Wl/2\~EEl/2 RS~Wl/1 RSEEl/1·. RSEWl/1 RSEE:11 .• "~;'.. • RSEE '. '::"' ::EWl/2 RSEEl/2 • R6EW 4326' 4326 43i 4325 15330 1 5330. 5329 i 5329 5328. 5328 ef327 5327 • 5326 5326 t.;;5 5325; 633 H1WI H1E H2 ! H2E iH3W H3E I H4W' H4E 'H5W H5E, W, H6E H7W H7E H~ H8E' H9 L ,~e'~',:, . R~e'f,:, ~;~'~', ... ::,'~i. ,· ~{!~); ~.'~'1"11 i ,1.'f,% .~:~~~:,'~% • i~ . ;,';',:, . ~v:,~, ;,'f,:~ N~:J~ :e'0'1 • 4335, 4335 433~~t53Jr~331\;32 5332. 5333 •·$3 53~}~.5334: 5.~35 :._5332A36: 5336 1 1633 . JtYY Jt.~ l~~, Jf,~ . t~X:', ,i,~,~ t~~ · ~~,~ , !~! 5E L~X:' · J~,~ 1frX:' R,,~ · l~~ 1~,~ 1 m,, . R4EW1" R4EE111 R4EWl,a R4Ee•!q,,R5EW11f RSEEl/2 R5EWI)/ RSEEl/2 • RSEWl/1 RSEWl/2 RSEEl/2 i RSEWl/1 RSEEl/1 RS,r:,\ RSEEl/1 f R6EWI . .... . t! I '=· .. ,\<~! ..... ·r--r-'11. ! 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J2E J3W I J3E 'J4W, J4E·; J5W J5E '6 • , Residential LJ (RC) Resource Conservation LJ (R-1) Residential 1dulac LJ (R-4) Residential 4dulac LJ (R-8) Residential 8du/ac LJ {R-10) Residential 10du/ac LJ (R-14) Residential 14du/ac LJ {RM-F) Residential Multi-Family LJ {RM-T) Res Multi-Family Traditional LJ (RM-U) Res Multi-Family Urban Center LJ {RMH) Res Manufactured Homes Mixed Use Centers LJ (CV) Center Village LJ (CD) Center Downtown LJ (UC-N1) Urban Center North 1 LJ (UC-N2) Urban Center North 2 Commercial LJ (CA) Commercial Arterial LJ (CN) Commercial Neighborhood LJ (CO) Commercial Office LJ {COR) Commercial/Office/Residential Industrial LJ (IL) lnduslrial Light LJ (IM) Industrial Medium LJ (IH) Industrial Heavy [=.=.1 RENTON ~---, l ___ J Potential Annexation Area PAGE INDEX Page Number Sect/Town/Range Central Renton Sewer Reline & Upsize 1 36 0 68 136 WGS_ 1984_ Web_Mercator_Auxihary_Sphere Feet Information Technology -GIS RentonMapSu pport@Re ntonwa.gov 07/17/2014 This map 1s a user generated static output from an I nternet mapping site and 1s for refe rence only. Data layers that appear on this map may or may not be a ccurate. current. or otherwise reliable. THI S MAP IS N OT TO BE USED FOR NAVIGATION Legend City and County Boundary r-Other l-· ! City of Renton ... Add resses Pa rcels Notes None 0 m >< :I: .... Cl .... ...,t U1 Cityof~e Finance & IT Division II EXHIBIT 6 SEPA ENVIRONMENTAL CHECKLIST UPDATED "2014 Purpose of checklist: Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance, minimization or compensatory mitigation measures will address the probable significant impacts or if an environmental impact statement will be prepared to further analyze the proposal. Instructions for applicants: This environmental checklist asks you to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use "not applicable" or "does not apply" only when you can explain why it does not apply and not when the answer is unknown. You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision- making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for Lead Agencies: Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of checklist for nonproject proposals: For nonproject proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non-projects) questions in Part B · Environmental Elements -that do not contribute meaningfully to the analysis of the proposal. A. background 1. Name of proposed project, if applicable: Central Renton Sewer Interceptor Reline and Upsize Project 2. Name of applicant: City Of Renton Wastewater Utility SEPA Environmental checklist (WAC 197-11-960) May 2014 Entire Docu Available Upon mRent equest Page 1 of 14 f EXHIBIT 7 I n 11 -! 1 f IJ ,-1,11 HI 1I J ! ! i f 1 ~ tmJ J f I~ I f f I I l I J i I f f J ~ f j 11 J J I j : j D • ~ (-' n @ Ci<] ~ I : I [ I zl fl""!'"" ·"---------.---···---------- !!oel>ARTMENT OF ARCHAEOLOGY & HISTORIC PRESERVATION August 11, 2014 Kris Sorenson Assistant Planner City of Renton Sixth Floor Renton City Hall 1055 S Grady Way Renton, WA 98057 In future correspondence please refer to: Log: 081114-62-KI EXHIBIT 8 Property: LUA 14-000968 Sewer interceptor Reline and Upsize Re: Archaeology -Survey Requested Dear Sorenson: Allyson Brooks Ph.D., Director Sfate Historic Preservation Officer We have reviewed the materials forwarded to our office for the proposed project referenced above. The area has a high potential for archaeological resources. The project area is in proximity to the Cedar River Pack Trail an ethnographic period trail used by the Duwamish and Muckleshoot Indian Tribes as well as tribes from eastern Washington such as the Yakima. The Yakima traveled to winter villages along the Black and Cedar Rivers to trade cured deerskins for dried clams and Black River salmon. Muck.Jeshoot Indian also utilized the Cedar River Pack Trail to travel to salmon fisheries in Maple Valley. An archaeological site associated with the use of this trail is located approximately 2,500 feet from the project area. Please be aware that archaeological sites are protected from knowing disturbance on both public and private lands in Washington States. Both RCW 27.44 and RCW 27.53.060 require that a person obtain a permit from our Department before excavating, removing, or altering Native American human remains or archaeological resources in Washington. Failure to obtain a permit is punishable by civil fines and other penalties under RCW 27 .53.095, and by criminal prosecution under RCW 27.53.090. Chapter 27.53.095 RCW allows the Department of Archaeology and Historic Preservation to issue civil penalties for the violation of this statute in an amount up to five thousand dollars, in addition to site restoration costs and investigative costs. Also, these remedies do not prevent concerned tribes from undertaking civil action in state or federal colll1, or law enforcement agencies from undertaking criminal investigation or prosecution. Chapter 27.44.050 RCW allows the affected Indian Tribe to undertake civil action apart from any criminal prosecution if burials are disturbed. Historic cemeteries and graves are also protected under RCW 68.60. The PVC replacement pipes are larger than the existing concrete pipe and this existing pipe system may have been placed within or near archaeological resources which may be disturbed by the new project. Therefore, we recommend an inadvertent discovery plan be prepared for the project. An example of such a plan is attached .. We also recommend consultation with the concerned Tribes' cultural committees and staff regarding cultural resource issues. State of Washington • Department of Archaeology & Historic Preservation P.O. Box 48343 • Olympia, Washington 98504.£343 • (360) 586-3065 www.dahp.wa.gov If any federal funds or permits are involved Section 106 of the National Historic Preservation Act, as amended, and its implementing regulations, 36CFR800, must be followed. This is a separate process from SEPA and requires formal government-to-government consultation with the affected Tribes and this agency. We would appreciate receiving any correspondence or comments from concerned tribes or other parties concerning cultural resource issues that you receive. Should you have any questions, please feel free to contact me at (360) 586-3088 or Gretchen.Kaehler@dahp.wa.gov. Sincerely, . " -j_.~_;;[#~.--{;~ FJ/-----~-"'---~-- Gretchen Kaehler Local Governments Archaeologist (360) 586-3088 gretchen.kaehler@dahp.wa.gov cc. Laura Murphy, Archaeologist, Muckleshoot Tribe Cecile Hansen, Chair, Duwamish Tribe Dennis Lewarch, THPO, Suquamish Tribe 2 DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT PLANNING DIVISION CERTIFICATE OF EXEMPTION FROM CRITICAL AREAS REGULATIONS EVALUATION FORM & DECISION DATE: PROJECT NAME: PROJECT NUMBER: PROJECT MANAGER: OWNER/APPLICANT: PROJECT LOCATION: PROJECT DESCRIPTION: Central Renton Sewer Interceptor Reline & Upsize Critical Areas Exemption LUA14-000968, ECF, CAR Kris Sorensen, Associate Planner City of Renton, Wastewater Utility Attn: John Hobson 1055 S Grady Way, 5th Floor Renton WA 98057 Right-of-way of N 4th St between Houser Way N and Sunset Blvd N. City of Renton prooses a sewer interceptor reline and upsize within existing improved and unimproved right-of-way. The right-of-way area is approximately 46,000 sf. The project would replace and upsize 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in-place pipe. The work area includes BNSF railroad area and a steep slope where the right-of-way is not improved of approximately 40 percent slope over 20 feet, between the flat area along Sunset Blvd N at the east and the lower BNSF railroad tracks at the west. Pipe upsizing would occur within the steep slope area. CRITICAL AREA: Geological Hazard -Protected Slope EXEMPTION JUSTIFICATION: Pursuant to RMC4-3-050.C. "e.ii" & "g.ii", of the Critical Areas Regulations is hereby granted: EXHIBIT 9 City of Renton Department of Commc..,.rty & Economic Development Central Sewer Interceptor Reline & Upsize Critical Areas Exemption Certificate of Exe111ption from Critical Areas Exemption LUA14-000968 Page 2 of 3 g. Maintenance and Construction -Existing Uses and Facilities ii. Maintenance and Repair -Any Existing Public or Private Use: Normal and routine maintenance and repair of any existing public or private uses and facilities where no alteration of the critical area and required buffer or additional fill X materials will be placed. The use of heavy construction equipment shall be limited to utilities and public agencies that require this type of equipment for normal and routine maintenance and repair of existing utility or public structures and rights- of-way. In every case, critical area and required buffer impacts shall be minimized and disturbed areas shall be restored during and immediately after the use of construction equipment. e. Roads, Parks, Public and Private Utilities ii. New Trails, Existing Parks, Trails, Roads, Facilities, and Utilities -Maintenance, Operation, Repair, and the Construction of New Trails: Normal and routine maintenance, operation and repair of existing parks and trails or the construction of new trails, streets, roads, rights-of-way and associated appurtenances, facilities X and utilities where no alteration or additional fill materials will be placed other than the minimum alteration and/or fill needed to restore those facilities or to construct new trails to meet established safety standards. The use of heavy construction equipment shall be limited to utilities and public agencies that require this type of equipment for normal and routine maintenance and repair of existing utility structures and rights-of-way. In every case, critical area and required buffer impacts shall be minimized and disturbed areas shall be restored during and immediately after the use of construction equipment. FINDINGS: The proposed development is consistent with the following findings pursuant to RMC section 4-3-0SOC.5: 1. The activity is not prohibited by this or any other chapter of the RMC or state or federal law or regulation. 2. The activity will be conducted using best management practices as specified by industry standards or applicable Federal agencies or scientific principles if submitted plans are followed and the conditions of approval of this exemption are met. 3. Impacts will be minimized and disturbed areas will be immediately restored, if submitted plans are followed and the conditions of approval of this exemption are met. DECISION: An exemption from the critical areas regulations is approved for upsizing and installation of 24-inch wide sewer pipe within the protected slope area of the N 4th St right-of- way. City of Renton Department of Community & Economic Development Certificate of Exemption from Critical Areas Regulations Central Sewer Interceptor Reline & Upsize Critical Areas Exemption LUA14-0DD968 DATE OF DECISION ON LAND USE ACTION: SIGNATURE: Jennifer Henning, AICP, Planning Director Deportment of Community & Economic Deve(opment Page 3 of 3 ~ /?. f; I '2.P l(f Date The above land use decision will become final if the decision is not appealed within the 14- day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). APPEALS: An appeal of this administrative land use decision must be filed in writing together with the required fee to the City of Renton Hearing Examiner, CiL, of Renton, 1055 South Grady Way, Renton, WA 98057, on or before 5:00 p.m., on et/~· -, 2014. RMC 4-8-110 • governs appeals to the Hearing Examiner and additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 430-6510. RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by the approval body. The approval body may modify his decision if material evidence not readily discoverable prior to the original decision is found or if he finds there was misrepresentation of fact. After review of the reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within the 14-day appeal time frame. EXPIRATION: Five (5) years from the date of decision '1 f 2. '2 . 2014. 215 0 107 215 WGS_ 1984_ Web_Mercator_Au xil ia ry_Sphere Feet Information Technology· GIS RentonMapSupport@Rentonwa.gov 08/13/2014 This map is a user generated stat ic out pu t f rom a n Internet mapping site and is for reference only. Data layers that appear on t his map may or may not be accurate, cu r rent . o r ot herwise rel iable. THIS MAP IS N OT TO B E USE D FO R NAV IGATIO N Legend City and County Boundary ~J Other [:} City ofRenton Add resses Parcels 0 Rooms/B ui ld i ng Sections Buildings Sites Other Municipal Gove rnment Facility Community / Recreat ion Center Library Museum Fire Station/ EMS Statie- Airport Runway / Airfiel Part< Opens pace Go~Course Greenhouse / N ursery Undeveloped Park • Part<ing Lot Structure , Slope City of Renton >15% &. <=25% • >25% & <=40% (Sen, • >40% & <=90% (Prott • >90% (Protected ) Envi ronm en t Design. O Natu ral O Shoreline High tntem m >< ::c t-4 c,:, t-4 -t ~ 0 O Shore line Isolated High Intensity O Shoreline Res idential O Urban Conservancy Notes None 0 ~one Finance & IT Division Sabrina Mirante From: Kris Sorensen Sent: To: Tuesday, August 12, 2014 3:19 PM Sabrina Mirante Subject: FW: Log 081114-62-Kl; Renton FW: re: LUA14-000968 Sewer interceptor Reline and Upsize Please add to project file. From: Kaehler, Gretchen (DAHP) [mailto:Gretchen.Kaehler@DAHP.wa.gov1 Sent: Tuesday, August 12, 2014 3:06 PM To: Kris Sorensen Subject: RE: Log 081114-62-Kl; Renton FW: re: LUA14-000968 Sewer interceptor Reline and Upsize Sorry, I will fix that. I just recommended an IDP. Example attached. I think with the location of the project area and current conditions that a survey would not be useful. Did you know that when you click on your name on the City's website it takes you to Vanessa Dolbee? Gretchen Kaehler Assistant State Archaeologist, Local Governments Department of Archaeology and Historic Preservation Olympia Ph:360-586-3088 Cell:360-628-2755 From: Kris Sorensen [mailto:K5orensen@Rentonwa.gov1 Sent: Tuesday, August 12, 2014 3:02 PM To: Kaehler, Gretchen (DAHP) Subject: Log 081114-62-Kl; Renton FW: re: LUA14-000968 Sewer interceptor Reline and Upsize Hi Gretchen -I am looking for some clarity from you on Log 081114-62-Kl in of Renton. See attached comment letter from you. The first page, bottom paragraph has a recommendation of a discovery plan for the project and then there is the example mention and the next sentence isn't capitalized and I want to make certain the survey of the project area is or is not required. The sentence capitalization makes me wonder if part of the sentence were deleted from a form letter. Please confirm whether a survey is also needed along with the inadvertent discovery plan. Thank you. Kris Sorensen, Associate Planner, Planning Division, Community & Economic Development, City of Renton, 425-430-6593 From: Vanessa Dolbee Sent: Tuesday, August 12, 2014 1:42 PM To: Kris Sorensen Subject: FW: re: LUAl 4-000968 Sewer interceptor Reline and Upsize l From: Kaehler, Gretchen (DAHP) [mailto:Gretchen.Kaehler@DAHP.wa.gov1 Sent: Monday, August 11, 2014 6:24 PM To: Vanessa Dolbee Subject: FW: re: LUA14·000968 Sewer interceptor Reline and Upsize From: Kaehler, Gretchen (DAHP) Sent: Monday, August 11, 2014 6:24 PM To: 'ksorensen@rentowa.gov' Subject: FW: re: LUA14·000968 Sewer interceptor Reline and Upsize From: Kaehler, Gretchen (DAHP) Sent: Monday, August 11, 2014 6: 10 PM To: 'ksorenson@rentonwa.gov' Cc: 'laura.murphy@muckleshoot.nsn.us' (laura.murphy@muckleshoot.nsn.us); Dennis Lewarch; DTS@gwestoffice.net Subject: re: LUA14·000968 Sewer interceptor Reline and Upsize Please see attached for this project. Please feel free to contact me if you have any questions. Thank you, Gretchen Gretchen Kaehler Assistant State Archaeologist, Local Governments Department of Archaeology and Historic Preservation Olympia Ph:360-586-3088 Cell:360-628-2755 2 August 11, 2014 Kris Sorenson Assistant Planner City of Renton Sixth Floor Renton City Hall 1055 S Grady Way Renton, WA 98057 In future correspondence please refer to: Log: 081114-62-KI Property: LUA14-000968 Sewer interceptor Reline and Upsize Re: Archaeology -Survey Requested Dear Sorenson: Allyson Brool:s Ph.D .. Director State Historic Preservation Officer We have reviewed the materials forwarded to our office for the proposed project referenced above. The area has a high potential for archaeological resources. The project area is in proximity to the Cedar River Pack Trail an ethnographic period trail used by the Duwarnish and Muckleshoot Indian Tribes as well as tribes from eastern Washington such as the Yakima. The Yakima traveled to winter villages along the Black and Cedar Rivers to trade cured deerskins for dried clams and Black River salmon. Muckleshoot Indian also utilized the Cedar River Pack Trail to travel to salmon fisheries in Maple Valley. An archaeological site associated with the use of this trail is located approximately 2,500 feet from the project area. Please be aware that archaeological sites are protected from knowing disturbance on both public and private lands in Washington States. Both RCW 27.44 and RCW 27.53.060 require that a person obtain a permit from our Department before excavating, removing, or altering Native American human remains or archaeological resources in Washington. Failure to obtain a permit is punishable by civil fines and other penalties under RCW 27.53.095, and by criminal prosecution under RCW 27.53.090. Chapter 27.53.095 RCW allows the Department of Archaeology and Historic Preservation to issue civil penalties for the violation of this statute in an amount up to five thousand dollars, in addition to site restoration costs and investigative cosis. Also, these remedies do not prevent concerned tribes from undertaking civil action in state or federal court, or Jaw enforcement agencies from undertaking criminal investigation or prosecution. Chapter 27.44.050 RCW allows the affected Indian Tribe to undertake civil action apart from any criminal prosecution if burials are disturbed. Historic cemeteries and graves are also protected under RCW 68.60. The PVC replacement pipes are larger than the existing concrete pipe and this existing pipe system may have been placed within or near archaeological resources which may be disturbed by the new project. Therefore, we recommend an inadvertent discovery plan be prepared for the project. An example of such a plan is attached .. We also recommend consultation with the concerned Tribes' cultural committees and staff regarding cultural resource issues. State of Washington • Department of Archaeology & Historic Preservation P.O. Box 48343 •Olympia.Washington 98504-8343 • 1360) 586-3065 www.dahp.wa.gov If any federal funds or permits are involved Section 106 of the National Historic Preservation Act, as amended, and its implementing regulations, 36CFR800, must be followed. This is a separate process from SEPA and requires formal government-to-government consultation with the affected Tribes and this agency. We would appreciate receiving any correspondence or comments from concerned tribes or other parties concerning cultural resource issues that you receive. Should you have any questions, please feel free to contact me at (360) 586-3088 or Gretchen.Kaehler@dahp.wa.gov. Sincerely, Gretchen Kaehler Local Governments Archaeologist (360) 586-3088 gretchen.kaehler@dahp.wa.gov cc. Laura Murphy, Archaeologist, Muckleshoot Tribe Cecile Hansen, Chair, Duwamish Tribe Dennis Lewarch, THPO, Suquamish Tribe 2 Sabrina Mirante From: Kris Sorensen Sent: To: Tuesday, August 12, 2014 2:52 PM Sabrina Mirante Subject: Attachments: FW: re: LUA14-000968 Sewer interceptor Reline and Upsize LUA14-000968 Sewer interceptor Reline and Upsize.pdf Please add this email and attachment to official file. Thanks, Kris From: Vanessa Dolbee Sent: Tuesday, August 12, 2014 1:42 PM To: Kris Sorensen Subject: PW: re: LUA14-000968 Sewer interceptor Reline and Upsize ----··-"···---· ----·--·--·--- From: Kaehler, Gretchen (DAHP) [mailto:Gretchen.Kaehler@DAHP.wa.gov1 Sent: Monday, August 11, 2014 6:24 PM To: Vanessa Dolbee Subject: PW: re: LUA14-000968 Sewer interceptor Reline and Upsize From: Kaehler, Gretchen (DAHP) Sent: Monday, August 11, 2014 6:24 PM To: 'ksorensen@rentowa.gov' Subject: PW: re: LUA14-000968 Sewer interceptor Reline and Upsize From: Kaehler, Gretchen (DAHP) Sent: Monday, August 11, 2014 6:10 PM To: 'ksorenson@rentonwa.gov' Cc: 'laura.murphy@muckleshoot.nsn.us' (laura.murohy@muckleshoot.nsn.us); Dennis Lewarch; DTS@gwestoffice.net Subject: re: LUA14-000968 Sewer interceptor Reline and Upsize Please see attached for this project. Please feel free to contact me if you have any questions. Thank you, Gretchen Gretchen Kaehler Assistant State Archaeologist, Local Governments Department of Archaeology and Historic Preservation Olympia Ph:360-586-3088 1 Cell:360-628-2755 2 August 11, 2014 Kris Sorenson Assistant Planner City of Renton Sixth Floor Renton City Hall 1055 S Grady Way Renton, WA 98057 In future correspondence please refer to: Log: 081114-62-KI Property: LUA14-000968 Sewer interceptor Reline and Upsize Re: Archaeology -Survey Requested Dear Sorenson: Allyson Brooks Ph.D., Director Stote Historic Preservation Officer We have reviewed the materials forwarded to our office for the proposed project referenced above. The area has a high potential for archaeological resources. The project area is in proximity to the Cedar River Pack Trail an ethnographic period trail used by the Duwamish and Muckleshoot Indian Tribes as well as tribes from eastern Washington such as the Yakima. The Yakima traveled to winter villages along the Black and Cedar Rivers to trade cured deerskins for dried clams and Black River salmon. Muckleshoot Indian also utilized the Cedar River Pack Trail to travel to salmon fisheries in Maple Valley. An archaeological site associated with the use of this trail is located approximately 2,500 feet from the project area. Please be aware that archaeological sites are protected from knowing disturbance on both public and private lands in Washington States. BothRCW 27.44 and RCW 27.53.060 require that a person obtain a permit from our Department before excavating, removing, or altering Native American human remains or archaeological resources in Washington. Failure to obtain a permit is punishable by civil fines and other penalties under RCW 27.53.095, and by criminal prosecution under RCW 27.53.090. Chapter 27 .53.095 RCW allows the Department of Archaeology and Historic Preservation to issue civil penalties for the violation of this statute in an amount up to five thousand dollars, in addition to site restoration costs and investigative costs. Also, these remedies do not prevent concerned tribes from undertaking civil action in state or federal court, or law enforcement agencies from undertaking criminal investigation or prosecution. Chapter 27.44.050 RCW allows the affected Indian Tribe to undertake civil action apart from any criminal prosecution if burials are disturbed. Historic cemeteries and graves are also protected under RCW 68.60. The PVC replacement pipes are larger than the existing concrete pipe and this existing pipe system may have been placed within or near archaeological resources which may be disturbed by the new project. Therefore, we recommend an inadvertent discovery plan be prepared for the project. An example of such a plan is attached. survey of the project area be conducted prior to ground disturbing activities. We also recommend consultation with the concerned Tribes' cultural committees and staff regarding cultural resource issues. State of Washington • Department of Archaeology & Historic Preservation P.O. Box 48343 • Olympia, Washington 98504-8343 • 1360) 586-3065 www.dahp.wa.gov If any federal fonds or pennits are involved Section 106 of the National Historic Preservation Act, us amended, and its implementing regulations, 36CFR800, must be followed. This is a separate process from SEPA and requires formal government-to-government consultation with the affected Tribes and this agency. We would appreciate receiving any correspondence or comments from concerned tribes or other parties concerning cultural resource issues that you receive. Should you have any questions, please feel free to contact me at (360) 586-3088 or Gretchen.Kaehler@dahp.wa.gov. Sincerely, Gretchen Kaehler Local Governments Archaeologist (360) 586-3088 gretchen.kaehler@dahp.wa.gov cc. Laura l'vlurphy, Archaeologist, Muckleshoot Tribe Cecile Hansen, Chair, Duwamish Tribe Dennis Lewarch, THPO, Suquamish Tribe 2 Inadvertent Archaeological and Historic Resources Discovery Plan for King County In the event that any ground-disturbing activities or other project activities related to this development or in any future development uncover protected cultural material (e.g., bones, shell, antler, horn or stone tools), the following actions will be taken: I. When an unanticipated discovery of protected cultural material (see definitions below) occurs, the property owner or contractor will completely secure the location and contact: a. The property owner and project manager; b. A professional archaeologist; c. The Department of Archaeology and Historic Preservation (DAHP) (Gretchen Kaehler, 360-586- 3088, 360-628-2755 cell); d. The Muckleshoot Indian Tribe Co (Laura Murphy, Archaeologist, 253-876-3272); e. The Duwamish Tribe (Cecile Hansen, Chair, 206-431-1582) f. Suquarnish Tribe, Dennis Lewarch, THPO (360-394-8529), and Steven Mullen-Moses, Cultural Resources, Snoqualmie Tribe (360-652-7362) 2. If the discovery is human remains, the property owner or contractor will stop work in and adjacent to the discovery, completely secure the work area by moving the land-altering equipment to a reasonable distance, and will immediately contact: a. The property owner; b. The Kin County Sheriff's Department (425-556-2500) and; c. The King County Coroner, Richard Harruff (206-731-3232) to determine if the remains are forensic in nature; d. If the remains are not forensic in nature the Department of Archaeology and Historic Preservation (DAHP) (Gretchen Kaehler 360-586-3088 and Guy Tasa 360-586-3534); will take the lead on determining the appropriate method of treatment for the remains and will consult with the affected tribes; 3. Cultural material that may be protected by law could include but is not limited to: a. Buried layers of black soil with layers of shell, charcoal, and fish and mammal bones (Figure I). b. Non-natural sediment or stone deposits that may be related to activity areas of people; c. Stone, bone, shell, horn, or antler tools that may include projectile points (arrowheads),scrapers, cutting tools, wood working wedges or axes, and grinding stones (Figures 2 and 3); d. Stone tools or stone flakes (Figures 2 and 3); e. Buried cobbles that may indicate a hearth feature (Figure 4); f. Old ceramic pieces, metal pieces, tools and bottles (Figures 5 and 6); and g. Perennially damp areas may have preservation conditions that allow for remnants of wood and other plant fibers; in these locations there may be remains including: • Fragments of basketry, weaving, wood tools, or carved pieces; and • Human remains. 1 4. COMPLIANCE WITH ALL APPLICABLE LAWS PERTAINING TO ARCHAEOLOGICAL RESOURCES (RCW 27.53, 27.44 and WAC 25-48) AND WITH HUMAN REMAINS (RCW 68.50) rs REQUIRED. FAILURE TO COMPLY WITH THESE REQUIREMENTS COULD RESULT IN A MISDEMEANOR AND POSSIBLE CIVIL PENALTIES AND/OR CONSTITUTE A CLASS C FELONY. Figure 1: Shell midden 2 Figure 2: Example of stone tools 3 Figure 3: Example o f stone fla k e. 4 Figure 4: Example of hearth (oven) feature. 5 Figure 5 : Example of historic artifacts from debris scatter . r·_· f~ Ii· le ~~ 1-.. • ~. Fi gure 6: Example o f bottle from hi storic debri s dump. 6 TIH, ?"'Joel >Nill bo w~jectb> \he Oli• SEPA on:llnanca, Crtticol .ll'UO otdlrwu:•, 1111! ott,.,•ppiluble codes and rq•ll~on:; ""~pn,pn,11'. Tho mi,,..;na Mllilatloo MOlllffl!I wil IUly l>e ir1'Jpo>ed on th@ P"'l>"sed pn,ject. Thos, rocomfflllndwd M,tipllon Mc•..n< a<ld"" pn,!<'<I im]ll<'I> not <0Yeredl>1-!11«Hle>•ri<l~uc:lle<!o..,.. • Follow recommen<lollcm l<,und ;n the seotochnlcal ~art. c.xnmont,~UM•-•ppllc>tlo!l.....,.basubrnlttw<lln•..tth"Cl<ll'.nlSonlnKn,_. _ _,.,cm-Pla, .... Dlvlllon,1DS5s-thG<adfWr/,ller,ttltl,W"-91!15l',~5;1!Q""-~11,1014. ~--~"'•l><>ul:thls pn,?O,al, or wish ti> bo made• Plrt'/ of IRCl<d ori<l reco,M! >ddltlo1>1I -by mo~. con,:,ct tho Pn>;ect Manager. ,._,,,,.,,...wt., ,ubmil>-"'""""" ccmmo<>ts W1l 1oJton'ln!aily be<oil'le • parryof'nia,nl •nd will be ..,-ol•"f-" °" this pn>jK!. "-a,pyaf1"" wt.sequent lh~ld d<tcrmlnatl<>o Is .....O.l>lo upon "'!l>Oit. CONTACT PERSON: Kris Sorensen, A$50clate Planner, Tel: {425) 430-6593; Eml: ksorensen@rentcnwa.gov CERTIFICATION NOTICE OF APPLICATION AND PROPOSED DETERMINATION OF NON-SIGNIFICANCE-MITIGATED (DNS-M) AMa<lm"~ lalbN<tftled oro:I O<alplmwlththoo.p,,..-tolCOmm•o"V l.[e<11K1mlc DnolDpmeffl {CW)-1'11 ..... t>ioidoftolWOtyofl'looton. Tllefdlowi111brlafty-tl'N1,i,lkatlonand1M~ ~~- DAlE OF lff7T1CZ Of """°"'-TIOH: July U,. 201~ 1.ANIIUstHUMal:11: W~.ECf.u.E. PROltcfll6CIIPT10N: TIN! IPFliant, City of ~.n,on wart-OM<ion, t, "'I"°"'"' SEPA EnvircM>Cotal ~ .. iew and Crititlll """"" ~•m!)llon fut ......,, ;nteruptor ,..r,,,. and ypsi;e wrtt,ln the riJt,1-,1.....,. of N 4d) St, t>o-.iS•IIMI BM! N ,t_ urtaod F1ctary A,o N al tt,e..-_ Tho~ IIH lsoppradml .. J,; 411,CIOO of. TIN, 1'f'Ojea-..d Ul)Qlc aod "'place l2l llnu,!eet al ""lslJ"I l2~n<h conC1tto........,. ?ipo with 2•-1nd> l'VC p;pe •nd rahoblVtata SS!I IN>rfmt af24-mdi «>n<'<I< pl?< u~na curtd--b-place pipe. Tho wa<'< ,,. • .,dude:, ~~ r>ilro.l ,..,. and• -,lopeofijlp,=lmately 40 p1!fa,nt!iopll 1M1r 20foet, tiet.,ttn 1ho,lli1,ro,"""' 10 S<, ... tBlvo N •nd B~ "''"""' trow. p;p.up>ilins*<luld oaur .,;,~In tho ,. .. pllopo,roo. /1, 1ooteclm""l=sinoeii"l"""'" i.., been ..,bn,lt<N. Tho l'.rttlcal -. ErernptiDn """""11111 fi>rth• uµslllngaf U.• .,.;,,;ng utilltyladllt,j In ti>• ~ Ilia!>" ,,.. •• PROJECTt.OC/1,TlOfl: OPTI~ DETUIMIN.lTIDN Of NDN-$1GNIFIC.lN(Z MmCiATm (DNS-Nl); /1,S 11>o t.ea<I ~cnq. the City of .. nton lul< detonnlMd that lignifiant omrlrc,,n,mt>I imporu ,,.. ..,nkely to result fmm the pn,pooed pro)Kt. 11'1,rafure. u ponnitt<ed ll<>dor tho ~,:w 43.l1C.11D, the City ar Ramon li u,q tt,, ~-I Dl6-M ?<O<e<S top r>O!la! that• DN5,M Is Ila~ to be inu<d. Comment periods fot N prajeel ond :IHI pmpo,ed DNS-M ll'O integm<rl ln!O • single comn,,,n1 i><rlod· Th•ra wAI be r.o a,n1rn11nl pariDd fDllawi,qi the il>UOl'l<e of tl>o Th,._ Oetennlnatlcn ol Non, Sljtnl!lc:ana-Mitlptm {ONS-M). U"tl lnO'J bt the only oppo<tunlty to a,mrn11nt on. the 01Mrocm•nlal dn?O<U of the p<1>110ial. "-1-f.d>ya?PO>I per!o<iwUIIDilawthe i»ua=e oltho OJG-M. NOTICE OFCCMPIETE APP\JCIITICIN: July 17, Wl.4 July2B.l0l.4 1<,t,,, H-./Olyol Remoll,'10$5 S Grwq" Way, s"' fl/11,,rm,n, WA 9114S1/,m..oo.7X1!/ J-~rentomn.co. -(SEl'A)--,Critlca!llro .. ~ -- O.partmontof<:onr,,...,fty&Economlc~lCEDI-~ oMslon,Sl>cth Aoarhntonatylloll,1055-lind\'~,"""'°"' W"-= The wbfod 1111! Is wtthln tho publl<: rfghts-ol-y and des~ C<>mmordal Comclor ,no Empi<,ymentAra1 lndumilllon theeityofR•nton Cooipr.-t>f"'J,;e Uod u .. Mop and Cominertiol ""1orlal ond M•ovy lndurtrlol on 1h11 Cly", Zonll'lfll ~. lf)'O'IJ w,;,uld IIM W bo ,node_• parry of re,:nnl ID~ fllC"t!!or ,nlDim,tion on th~ praposed prol<'<I, ccmplet,, this f<irm and mum 10: ctyol Raoti>n, a:o -Plonnil'lg DMslon, 10SS So. lindv'Way. Rontoo, WA9!I057. Name/FIi<! !lo.: c:.ntnol R<nlcn Sewtr omen;,:pu,r RoR,... !, Upsiie/WA14-IXI09611, ECF, u\E ~E'---------------------- t.\AIUNGADD!IESS.: ___________ oty/Sli'te/llpc _______ _ nl.!l'>iONE"IO,; __________ _ I, __ lu <t,.,, f2 2 /61 • rt , hereby certify that ', copies oft he above document were posted in -J conspicuous places or nearby the described property on ' / f ' Signed: <iZ'u1~A_/ / ; . STATE OF WASHINGTON ss COUNTY OF KING I certify that I know or have satisfactory evidence that :::S s-\i"' \<w6,\.9 0 d signed this instrument and acknowledged it to be his/her/their free and voluntary act for the uses and purposes mentioned in the instrument. d for the State of Washington ·,,. Notary ( Print) : ___ \-;IUJ.·P'-'5..>..l.1.--3-· ..,,.o""--''"'AJ'-V"""'---''-· ----- My appointment expires.:_ ----.1--Ai.:.ut5=.-i..i ,<-''-"~·+-1-· _..s.cte:.....i:J_,_..,;;,."---"'c'-',t~L\..,,.· __ Agencies John Hobson, City of Renton See Attached (Signature of Sender): STATE OF WASHINGTON COUNTY OF KING Dated: ) ) s ) See Attached Owner/Applicant 300' surrounding property owners Central Renton Sewer Interceptor Reline & Upsize LUA14-000968, ECF.I CA I:: template -affidavit of service by mailing Dept. of Ecology** Environmental Review Section PO Box47703 Olympia, WA 98504-7703 WSDOT Northwest Region • Attn: Ramin Pazooki King Area Dev. Serv., MS-240 PO Box 330310 Seattle, WA 98133-9710 US Army Corp. of Engineers • Seattle District Office Attn: SEPA Reviewer PO Box C-3755 Seattle, WA 98124 Boyd Powers *** Depart. of Natural Resources PO Box47015 Olympia, WA 98504-7015 KC Dev. & Environmental Serv. Attn: SEPA Section 35030 SE Douglas St. #210 Snoqualmie, WA 98065 Metro Transit Senior Environmental Planner Gary Kriedt 201 South Jackson Street KSC-TR-0431 Seattle, WA 98104-3856 Seattle Public Utilities Jailaine Madura Attn: SEPA Coordinator 700 Fifth Avenue, Suite 4900 PO Box 34018 Seattle, WA 98124-4018 AGENCY (DOE) LETTER MAILING (ERC DETERMINATIONS) WDFW -Larry Fisher' 1775 12th Ave. NW Suite 201 Issaquah, WA 98027 Duwamish Tribal Office • 4717 W Marginal Way SW Seattle, WA 98106-1514 KC Wastewater Treatment Division * Environmental Planning Supervisor Ms. Shirley Marroquin 201 S. Jackson ST, MS KSC-NR-050 Seattle, WA 98104-3855 City of Newcastle Attn: Tim McHarg Director of Community Development 12835 Newcastle Way, Ste 200 Newcastle, WA 98056 Puget Sound Energy Kathy Johnson, 355 110th Ave NE Mailstop EST 11W Bellevue, WA 98004 Muckleshoot Indian Tribe Fisheries Dept.• Attn: Karen Walter or SEPA Reviewer 39015 -172"d Avenue SE Auburn, WA 98092 Muckleshoot Cultural Resources Program * Attn: Ms Melissa Calvert 39015 172"d Avenue SE Auburn, WA 98092-9763 Office of Archaeology & Historic Preservation• Attn: Gretchen Kaehler PO Box 48343 Olympia, WA 98504-8343 City of Kent Attn: Jack Pace Acting Community Dev. Director 220 Fourth Avenue South Kent, WA 98032-5895 City of Tukwila Steve Lancaster, Responsible Official 6200 Southcenter Blvd. Tukwila1 WA 98188 *Note: If the Notice of Application states that it is an '10ptional DNS"1 the marked agencies and cities will need to be sent a copy of the Environmental Checklist, Site Plan PMT, and the Notice of Application. **Department of Ecology is emailed a copy of the Environmental Checklist1 Site Plan PMT, & Notice to the following email address: sepaunit@ecy.wa.gov ***Department of Natural Resources is emailed a copy of the Environmental Checklist, Site Plan PMT, & Notice the following email address: sepacenter@dnr.wa.gov template -affidavit of service by mailing :2305'9197 'ACCAR INC '0 BOX 1518 IELLEVUE, WA 98009 .723059111 1LMONT GARRED L :33 SUNSET BLVD N lENTON, WA 98055 '223000010 'ACCAR INC '0 BOX 1518 IELLEVUE, WA 98009 .352301295 AKHARZADEH M HADI '0 BOX 78404 ,EADLE, WA 98178 :23059109 ,TATE OF WASHINGTON DOT '0 BOX 47338 )LYMPIA, WA 98504 .723059122 :MBA NO 1 LLC .3219 NE 10TH Pl IELLEVUE, WA 98005 723059094 SUNSET HOLDINGS LLC 14715 CRESCENT VALLEY DR GIG HARBOR, WA 98332 1723059111 ALMONT GARRED L 333 SUNSET BLVD N RENTON, WA 98055 1352301205 SEADLE OPERA ASSOCIATION PO BOX9248 SEADLE,WA 98109 823059026 BNSF PO BOX 961089 FORT WORTH, TX 76161 1723059006 BNSF RAILWAY COMPANY PO BOX 961089 FORT WORTH, TX 76161 723059095 KERB MARY JO 22225 SE 4TH ST SAMMAMISH, WA 98073 1723059150 SUNSET CENTER PROPERTIES C/ 3973 E HALF ROUND BAY RD HARRISON, ID 83833 1352301225 BENNED ROBERT M PO BOX 984 RENTON, WA 98057 823059087 TEMPLE SHAARAYTEFILA 340 PEMBERWICK RD #lST FLR GREENWICH, CT 6831 1723059150 SUNSET CENTER PROPERTIES C/ 3973 E HALF ROUND BAY RD HARRISON, ID 83833 John Hobson David Christensen City of Renton __ D..:e~:::~raw------~J-3"f T iD' n July 28, 2014 John Hobson City of Renton 1055 South Grady Way, 5th Fl Renton,WA 98057 Community & Economic Development Department C.E."Chip"Vincent, Administrator Subject: Notice of Complete Application Central Renton Sewer Interceptor Reline & Upsize, LUA000968, ECF, CAE Dear Mr. Hobson: The Planning Division of the City of Renton has determined that the subject application is complete according to submittal requirements and, therefore, is accepted for review. It is tentatively scheduled for consideration by the Environmental Review Committee on August 18, 2014. Prior to that review, you will be notified if any additional information is required to continue processing your application. Please contact me at (425) 430-6593 if you have any questions. Sincerely, Kris Sorensen Assistant Planner cc: City of Renton/ Owner{s) Renton City Hall , 1055 South Grady Way • Renton, Washington 98057 , rentonwa.gov NOTICE OF APPLICATION AND PROPOSED DETERMINATION OF NON-SIGNIFICANCE-MITIGATED {DNS-M) A Master Application has been filed and accepted with the Department of Community & Economic Development (CED)-Planning Division of the City of Renton. The following briefly describes the application and the necessary Public Approvals. DATE OF NOTICE OF APPLICATION: lAND USE NUMBER: PROJECT NAME: July 28, 2014 LUA14-000968, ECF, CAE Central Renton Sewer Interceptor Reline & Upsize PROJECT DESCRIPTION: The applicant, City of Renton Wastewater Division, is requesting SEPA Environmental Review and Critical Areas Exemption for sewer interceptor reline and upsize within the right-of-way of N 4th St, between Sunset Blvd Nat the east and Factory Ave N at the west. The right-of-way area is approximately 46,000 sf. The project would upsize and replace 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in-place pipe. The work area includes BNSF railroad area and a steep slope of approximately 40 percent slope over 20 feet, between the flat area next to Sunset Blvd N and BNSF railroad tracks. Pipe upsizing would occur within the steep slope area. A geotechnical engineering report has been submitted. The Critical Areas Exemption would be for the upsizing of the existing utility facility in the steep slope area. PROJECT LOCATION: N 4th St Right of Way between Houser Way N. and Sunset Blvd N. OPTIONAL DETERMINATION OF NON-SIGNIFICANCE, MITIGATED (DNS-M): As the Lead Agency, the City of Renton has determined that significant environmental impacts are unlikely to result from the proposed project. Therefore, as permitted under the RCW 43.21C.110, the City of Renton is using the Optional DNS-M process to give notice that a DNS-M is likely to be issued. Comment periods for the project and the proposed DNS-M are integrated into a single comment period. There will be no comment period following the issuance of the Threshold Determination of Non- Significance-Mitigated (DNS-M), this may be the only opportunity to comment on the environmental impacts of the proposal. A 14-day appeal period will follow the issuance of the DNS-M. PERMIT APPLICATION DATE: NOTICE OF COMPLETE APPLICATION: July 17, 2014 July 28, 2014 APPLICANT/PROJECT CONTACT PERSON: John Hobson/City of Renton/1055 S Grady Way, 5th Fl/Renton, WA 98057/425-430-7279/ jhobson@rentonwa.gov Permits/Review Requested: Requested Studies: Location where application may be reviewed: CONSISTENCY OVERVIEW: Zoning/Land Use: Environmental (SEPA) Review, Critical Areas Exemption Geotechnlcal report Department of Community & Economic Development (CED}-Planning Division, Sixth Floor Renton City Hall, 1055 South Grady Way, Renton, WA 98057 The subject site is within the public rights-of-way and designated Commercial Corridor and Employment Area Industrial on the City of Renton Comprehensive Land Use Map and Commercial Arterial and Heavy Industrial on the City's Zoning Map. If you would like to be made a party of record to receive further information on this proposed project, complete this form and return to: City of Renton, CED -Planning Division, 1055 So. Grady Way, Renton, WA 98057. Name/File No.: Central Renton Sewer Interceptor Reline & Upsize/LUA14-000968, ECF, CAE NAM Ee---------------------------------- MAILING ADDRESS: ________________ City/State/Zip: __________ _ TELEPHONE NO.: --------------- Environmental Documents that Evaluate the Proposed Project: Development Regulations Used For Project Mitigation: Proposed Mitigation Measures: Environmental (SEPA) Checklist The project will be subject to the City's SEPA ordinance, Critical Areas ordinance, and other applicable codes and regulations as appropriate. The foltowipg Mitigation Measures will likely be imposed on the proposed project. These recommended Mitigation Measures address project impacts not covered by existing codes and regulations as cited above. • Follow recommendations found in the geotechnical report. Comments on the above appllcatlon must be submitted in writing to Kris Sorensen, Associate Planner, CED-Planning Division, 1055 South Grady Way, Renton, WA 98057, by 5:00 PM on August 11, 2014. If you have questions about this proposal, or wish to be made a party of record and receive additional notification by mail, contact the Project Manager. Anyone who submits written comments will automatically become a party of record and will be notified of any decision on this project. A copy of the subsequent threshold determination is available upon request. CONTACT PERSON: Kris Sorensen, Associate Planner; Tel: (425) 430-6593; Eml: ksorensen@rentonwa.gov PLEASE INCLUDE THE PROJECT NUMBER WHEN CALLING FOR PROPER FILE IDENTIFICATION DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT PLANNING DIVISION CERTIFICATE OF EXEMPTION FROM CRITICAL AREAS REGULATIONS EVALUATION FORM & DECISION DATE: PROJECT NAME: PROJECT NUMBER: PROJECT MANAGER: OWNER/ APPLICANT: PROJECT LOCATION: PROJECT DESCRIPTION: Central Renton Sewer Interceptor Reline & Upsize Critical Areas Exemption LUA14-000968, ECF, CAR Kris Sorensen, Associate Planner City of Renton, Wastewater Utility Attn: John Hobson 1055 S Grady Way, 5th Floor Renton WA 98057 Right-of-way of N 4th St between Houser Way N and Sunset Blvd N. City of Renton prooses a sewer interceptor reline and upsize within existing improved and unimproved right-of-way. The right-of-way area is approximately 46,000 sf. The project would replace and upsize 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured-in-place pipe. The work area includes BNSF railroad area and a steep slope where the right-of-way is not improved of approximately 40 percent slope over 20 feet, between the flat area along Sunset Blvd N at the east and the lower BNSF railroad tracks at the west. Pipe upsizing would occur within the steep slope area. CRITICAL AREA: Geological Hazard -Protected Slope EXEMPTION JUSTIFICATION: Pursuant to RMC4-3-050. C. "e.ii" & "g.ii", of the Critical Areas Regulations is hereby granted: City of Renton Department of Comm'unity & Economic Development Central Sewer Interceptor Reline & Upslze Critical Areas Exemption Certificate of E tion from Critical Areas Exemption LUA14-000968 Page 2 of3 g. Maintenance and Construction -Existing Uses and Facilities ii. Maintenance and Repair -Any Existing Public or Private Use: Normal and routine maintenance and repair of any existing public or private uses and facilities where no alteration of the critical area and required buffer or additional fill X materials will be placed. The use of heavy construction equipment shall be limited to utilities and public agencies that require this type of equipment for normal and routine maintenance and repair of existing utility or public structures and rights- of-way. In every case, critical area and required buffer impacts shall be minimized and disturbed areas shall be restored during and immediately after the use of construction equipment. e. Roads, Parks, Public and Private Utilities ii. New Trails, Existing Parks, Trails, Roads, Facilities, and Utilities -Maintenance, Operation, Repair, and the Construction of New Trails: Normal and routine maintenance, operation and repair of existing parks and trails or the construction of new trails, streets, roads, rights-of-way and associated appurtenances, facilities X and utilities where no alteration or additional fill materials will be placed other than the minimum alteration and/or fill needed to restore those facilities or to construct new trails to meet established safety standards. The use of heavy construction equipment shall be limited to utilities and public agencies that require this type of equipment for normal and routine maintenance and repair of existing utility structures and rights-of-way. In every case, critical area and required buffer impacts shall be minimized and disturbed areas shall be restored during and immediately after the use of construction equipment. FINDINGS: The proposed development is consistent with the following findings pursuant to RMC section 4-3-0SOC.5: 1. The activity is not prohibited by this or any other chapter of the RMC or state or federal law or regulation. 2. The activity will be conducted using best management practices as specified by industry standards or applicable Federal agencies or scientific principles if submitted plans are followed and the conditions of approval of this exemption are met. 3. Impacts will be minimized and disturbed areas will be immediately restored, if submitted plans are followed and the conditions of approval of this exemption are met. DECISION: An exemption from the critical areas regulations is approved for upsizing and installation of 24-inch wide sewer pipe within the protected slope area of the N 41h St right-of- way. City of Renton Department of Commtlnity & Economic Development Certificate of Ex Central Sewer Interceptor Reline & Upsize Critical Areas Exemption DATE OF DECISION ON LAND USE ACTION: SIGNATURE: Jennifer Henning, AICP, Planning Director Department of Community & Economic Development ion from Critical Areas Regulations LUA14-000968 Page 3 of 3 'Z /'2 'l, I Z/J l'f Date The above land use decision will become final if the decision is not appealed within the 14- day appeal period (RCW 43.21.C.075(3); WAC 197-11-680). APPEALS: An appeal of this administrative land use decision must be filed in writing together with the required fee to the City of Renton Hearing Examiner, Ci/ of Renton, 1055 South Grady Way, Renton, WA 98057, on or before 5:00 p.m., on "I /'5 -. 2014. RMC 4-8-110 governs appeals to the Hearing Examiner and additional information regarding the appeal process may be obtained from the Renton City Clerk's Office, (425) 430-6510. RECONSIDERATION: Within 14 days of the decision date, any party may request that the decision be reopened by the approval body. The approval body may modify his decision if material evidence not readily discoverable prior to the original decision is found or if he finds there was misrepresentation of fact. After review of the reconsideration request, if the approval body finds sufficient evidence to amend the original decision, there will be no further extension of the appeal period. Any person wishing to take further action must file a formal appeal within the 14-day appeal time frame. EXPIRATION: Five (5) years from the date of decision '? / 2. '2 , 2014. City of Rt. , Department of Community & Economic De ment ENVIRONMENTAL & DEVELOPMENT APPLICATION REVIEW SHEET REVIEWING DEPARTMENT: COMMUNITY SERVICES APPLICATION NO: LUA14-000968, ECF APPLICANT: City of Renton PROJECT TITLE: Central Renton Sewer Interceptor Reline & Upsize SITE AREA: 1,290 square feet LOCATION: N 4'h St Right of Way between Houser Way N and Sunset Blvd N COMMENTS DUE: AUGUST 11, 2014 DATE CIRCULATED: JULY 28, 2014 PROJECT MANAGER: Kris Sorensen PROJECT REVIEWER: EXISTING BLDG AREA (gross): PROPOSED BLDG AREA (gross) SUMMARY OF PROPOSAL: The applicant, City of Renton Wastewater Division, is requesting SEPA Environmental Review and Critical Areas Exemption for sewer interceptor reline and upsize within the right-of-way of N 4th St, between Sunset Blvd N at the east and Factory Ave N at the west. The right-of-way area is approximately 46,000 sf. The project would upsize and replace 122 linear feet of existing 12-inch concrete sewer pipe with 24-inch PVC pipe and rehabilitate 559 linear feet of 24-inch concrete pipe using cured- in-place pipe. The work area includes BNSF railroad area and a steep slope of approximately 40 percent slope over 20 feet, between the flat area next to Sunset Blvd N and BNSF railroad tracks. Pipe upsizing would occur within the steep slope area. A geotechnical engineering report has been submitted. The Critical Areas Exemption would be for the upsizing of the existing utility facility in the steep slope area. A. ENVIRONMENTAL IMPACT (e.g. Non-Cade) COMMENTS Element of the Probable Probable More Environment Minor Major Information Impacts Impacts Necessary Element of the Probable Probable More Environment Minor Major Information Impacts Impacts Necessary Earth Housina Air Aesthetics Water Linht/Glare Plants Recreation Land/Shoreline Use Utilities Animals Transoortation Environmental Health Public Services Energy/ Natural Resources Historic/Cultural Preservation Airport Environment 10,000Feet 14,000 Feet 8. POL/CY-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional inform eeded to properly assess this proposal. I Date CODE-RELATED COMMENTS We have reviewed this application with particular attention to those areas in which we have expertise and have identified areas of probable impact or areas where additional information is needed to properly assess this proposal. Signature of Director or Authorized Representative Date City of Renton LAND USE PERMIT MASTER APPLICATION PROPERTY OWNER($) PROJECT INFORMATION PROJECT OR DEVELOPMENT NAME: NAME: City of Renton Central Renton Sewer Interceptor Reline and Upsize ADDRESS: 1055 South Grady Way PROJECT/ADDRESS(S)/LOCATION AND ZIP CODE: N. 41 " St Right of Way between Houser Way North and CITY: Renton ZIP: 98057 Sunset Blvd North TELEPHONE NUMBER: 425-430-7279 KING COUNTY ASSESSOR'S ACCOUNT NUMBER(S): N/A APPLICANT (if other than owner) EXISTING LAND USE(S): NAME: Right of Way PROPOSED LAND USE(S): COMPANY (if applicable): N/A EXISTING COMPREHENSIVE PLAN MAP DESIGNATION: ADDRESS: Commercial Corridor PROPOSED COMPREHENSIVE PLAN MAP DESIGNATION CITY: Renton ZIP: 98057 (if applicable) N/A EXISTING ZONING: TELEPHONE NUMBER: 425-430-7279 Commercial Arterial CONTACT PERSON PROPOSED ZONING (if applicable): N/A NAME: John Hobson SITE AREA (in square feet): Approximately 1,290 square feet (129' long x 10' wide trench) SQUARE FOOTAGE OF PUBLIC ROADWAYS TO BE COMPANY (if applicable): City of Renton DEDICATED: N/A SQUARE FOOTAGE OF PRIVATE ACCESS EASEMENTS: ADDRESS: 1055 South Grady Way, 5th Floor N/A PROPOSED RESIDENTIAL DENSITY IN UNITS PER NET CITY: Renton ZIP: 98057 ACRE (if applicable) N/A TELEPHONE NUMBER AND EMAIL ADDRESS: NUMBER OF PROPOSED LOTS (if applicable) jhobson@rentonwa.gov N/A r\C(~,.,,,r-·J\ :~~]) ~~·· \ 425-430-7279 NUMBER OF NEW DWEa.MB ONITS (if applicable): N/A 'JUL 1 7 H:\~'ile Sys\WWP -WasteWater\WWP-27-3712 Central Renton Sewer Interceptor Reline & UpsiLe\SEPA\niasterapp -Cen~-I Ren;o1~~e~ceptor Re\ine;and Upme.doc -I -~lT't --03111 l.\'' F IJECT INFORMATION (con . Jed) ~:....:_:._,.-=---.::..:..:_c._:c_:___c=.,_ ___________ ~ NUMBER OF EXISTING DWELLING UNITS (if applicable): N/A PROJECT VALUE: $262,000 SQUARE FOOTAGE OF PROPOSED RESIDENTIAL BUILDINGS (if applicable): N/A IS THE SITE LOCATED IN ANY TYPE OF ENVIRONMENTALLY CRITICAL AREA, PLEASE INCLUDE SQUARE FOOTAGE (if applicable): N/A SQUARE FOOTAGE OF EXISTING RESIDENTIAL BUILDINGS TO REMAIN (if applicable): N/A D AQUIFIER PROTECTION AREA ONE SQUARE FOOTAGE OF PROPOSED NON-RESIDENTIAL D AQUIFIER PROTECTION AREA TWO BUILDINGS (if applicable): N/A D FLOOD HAZARD AREA sq. ft. SQUARE FOOTAGE OF EXISTING NON-RESIDENTIAL BUILDINGS TO REMAIN (if applicable): N/A D GEOLOGIC HAZARD sq. ft. NET FLOOR AREA ON NON-RESIDENTIAL BUILDINGS (if D HABITAT CONSERVATION sq. ft. applicable): N/A D SHORELINE STREAMS & LAKES sq. ft. NUMBER OF EMPLOYEES TO BE EMPLOYED BY THE NEW PROJECT (if applicable): N/A D WETLANDS sq. ft. LEGAL DESCRIPTION OF PROPERTY (Attach leQal description on separate sheet with the followin!l information included) SITUATE IN THE NE QUARTER OF SECTION 17, TOWNSHIP 23, RANGE 05, IN THE CITY OF RENTON, KING COUNTY, WASHINGTON AFFIDAVIT OF OWNERSHIP I, (Print Name/s) ~HAI J/o'B,sm/ , declare under penalty of perjury under the laws of the State of Washington that I am (please c'heck one) __ the current owner of the property involved in this application or -X the authorized representative to act for a corporation (please attach proof of authorization) and that the foregoing statements and answers herein the information herewith are in all respects true and correct to the best of my knowledge and belief. Signal STATE OF WASHINGTON ) COUNTY OF KING ) ss ) 7-/,S--2-cf,t.. Date I certify that I know or have satisfactory evidence that .Jo hD \-\o\o""<>o n signed this instrument and acknowledge it to be his/her/their free and voluntary act for the uses and purpose mentioned in the instrument. Dated Notary Public in and for the State of Washington Notary (Print): 'AM b.11,v-)) \"U l S My appointment expires: ---"{"J'------"-\-t\,,_--'-;;i"'-'=o'-'-'l e,'-'-------------- H:\Filc Sys\WWP -WasteWater\WWP-27-3712 Central Renton Sewer Interceptor Reline & Upsizc\SEPA\masterapp -Central Renton Interceptor Reline and Upsize.doc -2 -03/11 Project Narrative Central Renton Sewer Interceptor Reline & Upsize The project proposes to replace approximately 122 linear feet of existing 12" concrete sewer with 24" PVC pipe and rehabilitate 559 linear feet of 24" concrete pipe using cured-in-place-pipe. This construction will take place within the rights-of-way of North 4th Street from Sunset Blvd N to Factory Pl North. The purpose of the project is to replace an old, undersized concrete sanitary sewer as well as rehabilitate other old concrete sewers. The project will be within existing right-of-ways (improved and unimproved) that are adjacent to commercial areas. There is one slope on the project site that is approximately 40%. This slope is 20 feet in length and separates the plateaued area adjacent to Sunset Blvd N with the flat area of the BNSF railroad adjacent to the improved portion of North 4'" St. The surrounding properties are zoned Commercial Arterial. The proposed project is estimated to cost $262,000. 'JUL l 7 CITY or. Project Mitigation Central Renton Sewer Interceptor Reline & Resize The project is scheduled to be constructed in the summer/fall of 2014. Construction will take place Monday through Friday between 7 AM and 5PM. Construction within the roadway portion of Sunset Blvd North will lake place Saturday and Sunday between 8AM and 5PM to minimize impacts to commuters. The contractor will be required to obtain a traffic control plan approved by the City's Transportation Department. A water truck will be used to minimize dust during construction. REC:EIVED JUL 1 7 70 1' Central Renton Sewer Reline & Upsize 136 0 68 136 WGS _ 1984 _ Web _Mercator _Auxiliary _Sphere Feet Information Technology -GIS RentonMapSupport@Rentonwa .g ov 0 7/17/2014 Th is m ap is a user generated static o utput from an Inte rn et mapping site and is for re ference only. Data layer s th at appear on this m ap may o r may not be accurate . current , or otherwise relia bl e. T HIS MAP IS N OT TO BE US ED FOR NAVIGATI ON Legend C ity and C ounty Bo un dary ;:J O ther [:,! City of Renton Addresses Pa r ce ls 0 UJ > - None \..l.l 0 LLl CY. <:! --= c---.1 r- .-4 _.J :::> --, 0 zz Oo z~ LU-;-.. (.\! 0 u. 2 01 ~~ -:).. (.) City o f &etTto n '® Finance & IT Division SEPA ENVIRONMENTAL CHECKLIST UPDATED 2014 Purpose of checklist: Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance, minimization or compensatory mitigation measures will address the probable significant impacts or if an environmental impact statement will be prepared to further analyze the proposal. Instructions for applicants: This environmental checklist asks you to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use "not applicable" or "does not apply" only when you can explain why it does not apply and not when the answer is unknown. You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision- making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to explain your answers or provide additional information reasonably related to determining if there may be significant adverse impact. Instructions for Lead Agencies: Please adjust the format of this template as needed. Additional information may be necessary to evaluate the existing environment, all interrelated aspects of the proposal and an analysis of adverse impacts. The checklist is considered the first but not necessarily the only source of information needed to make an adequate threshold determination. Once a threshold determination is made, the lead agency is responsible for the completeness and accuracy of the checklist and other supporting documents. Use of checklist for nonproject proposals: For nonproject proposals (such as ordinances, regulations, plans and programs), complete the applicable parts of sections A and B plus the SUPPLEMENTAL SHEET FOR NONPROJECT ACTIONS (part D). Please completely answer all questions that apply and note that the words "project," "applicant," and "property or site" should be read as "proposal," "proponent," and "affected geographic area," respectively. The lead agency may exclude (for non-projects) questions in Part B -Environmental Elements -that do not contribute meaningfully to the analysis of the proposal. A. background 1. Name of proposed project, if applicable: Central Renton Sewer Interceptor Reline and Upsize Project 2. Name of applicant: City Of Renton Wastewater Utility SEPA Environmental checklist (WAC 197-11-960) May 2014 cnv c1 ~: '..'.:t Page 1 of 14 ~1 1 A:'i>'.'.>,::·:., I:,>/: .. ·, 3. Address and phone number of applicant and contact person: John Hobson, Project Manager, Wastewater Utility 1055 South Grady Way Renton,WA 98057 425-430-7279 4. Date checklist prepared: July 2014 5. Agency requesting checklist: City of Renton 6. Proposed timing or schedule (including phasing, if applicable): Summer/Fall 2014 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain. No. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. None. 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. None known. 10. List any government approvals or permits that will be needed for your proposal, if known. SEPA. BNSF crossing/temporary occupancy permit(s). City of Renton Right of Way permit. 11. Give brief, complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.) Relining (using cured in place pipe) approximately 560 linear feet of existing 24-inch diameter sewer located along N 4th St alignment/ROW between City sewer manhole SMH 5317-249 (near the intersection with N 3rd Pl.) and SMH 5317-185 (east of the BNSF railroad tracks, near the intersection of Houser Way); and Upsizing (to 24-inch diameter) approximately 125 linear feet of existing 12-inch diameter sewer located along N 4th St. alignment/ROW between City sewer manholes SMH 5317-185 (east of BNSF railroad tracks, near the intersection of Houser Way) and SMH 5317-186 (in the center of the northbound lane of Sunset Blvd. N). In addition, SMH 5317-185 will be replaced with a new 84-inch diameter manhole. SEPA Environmental checklist (WAC 197-11-960) May 2014 Page 2 of 14 The project will also include temporary bypass sewer systems, traffic control, and site restoration. 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The project is located in the following areas: SW/SE 1/4 of Section 8 and NW/NE 1/4 of Section 17, Township 23N, Range SE, in the City of Renton, and in King County, Washington. The majority of project work will occur at the following locations: along N 4th St. and N 4th St. alignment, at the intersection of N 4th St. alignment and Sunset Blvd. N, adjacent to Houser Way between Factory Pl. N and N 4th St. Temporary project work to establish bypass sewer systems will occur at the intersection of Sunset Blvd. NE and NE 7th St. and at the intersection of NE 7th St. and Aberdeen Ave. NE. 8. ENVIRONMENTAL ELEMENTS 1. Earth a. General description of the site (circle one): Flat, rolling, hilly, steep slopes, mountainous, other ------ Generally flat, with one relatively short, steep slope. b. What is the steepest slope on the site (approximate percent slope)? Approximately 40%. c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any agricultural land of long-term commercial significance and whether the proposal results in removing any of these soils. The general types of soil encountered on the site are fill, alluvium and glacial advance outwash (per project geotechnical engineering report). Fill is generally loose to medium dense, slightly silty, sandy gravel, and loose to medium dense silty to very silty, gravelly sand to sandy gravel. Alluvium is very loose to medium dense, clean to slightly silty, moist to saturated, gravelly sand to sandy gravel. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. SEPA Environmental checklist (WAC 197·11-960) May 2014 Page 3 of 14 No. e. Describe the purpose, type, total area, and approximate quantities and total affected area of any filling, excavation, and grading proposed. Indicate source of fill. Approximately 275 cubic yards of soil will be excavated to install the new sewer and manhole. Approximately 275 cubic yards of soil will be placed as trench backfill. The contractor will supply the backfill from licensed gravel pits. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Minor erosion could occur during construction on the short sloped portion of the sewer alignment, however, will be minimized or mitigated by the implementation of TESC BMPs during construction. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Approximately 80 percent of the project site is currently and will be covered with impervious surfaces after project completion. No new impervious surfaces are proposed. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any: Typical erosion control measures such as silt fencing, catch basin inlet protection, hydroseeding, and replanting of the site should reduce and control any erosion from construction activities. 2. Air a. What types of emissions to the air would result from the proposal during construction" operation, and maintenance when the project is completed? If any, generally describe and give approximate quantities if known. During construction, dust and exhaust from construction equipment will occur. After construction, no emissions are expected from the site. b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. No. c. Proposed measures to reduce or control emissions or other impacts to air, if any: Construction equipment will have mufflers and exhaust systems in good working order. Dust will be kept down by watering the work site as needed. 3. Water a. Surface Water: 1) Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. No. SEPA Environmental checklist (WAC 197-11-960) May 2014 Page 4 of 14 2) Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. N/A 3) Estimate the amount of fill and dredge material that would be placed in or removed from surlace water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. N/A 4) Will the proposal require surlace water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. No.· 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. No. 6) Does the proposal involve any discharges of waste materials to surlace waters? If so, describe the type of waste and anticipated volume of discharge. No. b. Ground Water: 1) Will groundwater be withdrawn froni a well for drinking water or other purposes? If so, give a general description of the well, proposed uses and approximate quantities withdrawn from the well. Will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. Based on geotechnical borings, ground water may be encountered in the bottom several feet of the pipe trench or manhole excavation. The ground water will be removed using standard dewatering techniques during construction. The dewatered ground water will not be discharged back to ground water, but disposed of by an approved method. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the following chemicals ... ; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. None. c. Water runoff (including stormwater): 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. N/A. 2) Could waste materials enter ground or surlace waters? If so, generally describe. SEPA Environmental checklist (WAC 197-11-960) May 2014 Page5of14 Liquid spills during construction that could potentially enter either the ground or surface waters will be minimized or mitigated through the use of BMPs. 3) Does the proposal alter or otherwise affect drainage patterns in the vicinity of the site? If so, describe. No. d. Proposed measures to reduce or control surface, ground, and runoff water, and drainage pattern impacts, if any: The Contractor will use best management practices to control runoff to ensure surface and ground water are not negatively impacted. 4. Plants a. Check the types of vegetation found on the site: __ deciduous tree: alder, maple, aspen, other __ evergreen tree: fir, cedar, pine, other _X_shrubs __ grass __ pasture __ crop or grain __ Orchards, vineyards or other permanent crops. __ wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other __ water plants: water lily, eelgrass, milfoil, other _X_other types of vegetation (Blackberry Bushes) b. What kind and amount of vegetation will be removed or altered? Approximately 400 square feet of vegetation including shrubs and blackberry bushes will be removed. c. List threatened and endangered species known to be on or near the site. None known. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any: All disturbed areas will be replaced to match existing which generally includes pavement and gravel. The removed vegetation will be replaced with hydroseed for erosion control. e. List all noxious weeds and invasive species known to be on or near the site. Blackberry bushes. 5. Animals a. List any birds and other animals which have been observed on or near the site or are known to be on or near the site. Examples include: SEPA Environmental checklist (WAC 197·11·960) May 2014 Page 6 of 14 birds: hawk, heron, eagle, songbirds, other: mammals: deer, bear, elk, beaver, other: None fish: bass, salmon, trout, herring, shellfish, other None b. List any threatened and endangered species known to be on or near the site. None known. c. Is the site part of a migration route? If so, explain. No. d. Proposed measures to preserve or enhance wildlife, if any: N/A. e. List any invasive animal species known to be on or near the site. None known. 6. Energy and natural resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. N/A. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: N/A. 7. Environmental health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so, describe. During construction, fuel and oil spills could occur. 1) Describe any known or possible contamination at the site from present or past uses. None known. 2) Describe existing hazardous chemicals/conditions that might affect project development and design. This includes underground hazardous liquid and gas transmission pipelines located within the project area and in the vicinity. None known. 3) Describe any toxic or hazardous chemicals that might be stored, used, or produced during the project's development or construction, or at any time during the operating SEPA Environmental checklist (WAC 197-11-960) May 2014 Page 7 of 14 life of the project. None. 4) Describe special emergency services that might be required. Typical emergency services by the Fire Department in case of fire, injury, or fuel spills. 5) Proposed measures to reduce or control environmental health hazards, if any: The Contractor will be required to keep construction equipment in good operating condition, and will be responsible to cleanup any oil or fuel leaks and spills, and repair leaking equipment. b. Noise 1) What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Traffic and train noise. 2) What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indi- cate what hours noise would come from the site. Short-term: General noise from construction equipment may typically occur between the hours of 7 AM to S PM Monday through Friday. Noise from construction equipment may also less typically occur between the hours of 9 AM to 7 PM on Saturdays or Sundays during construction, in which the Contractor will be required to comply with City noise control requirements. 3) Proposed measures to reduce or control noise impacts, if any: The contractor will be required to keep the construction equipment's mufflers and exhaust systems in good operating condition. 8. Land and shoreline use a. What is the current use of the site and adjacent properties? Will the proposal affect current land uses on nearby or adjacent properties? If so, describe. The current use of the site is an existing City right of way (both developed and undeveloped) for roadway, sewer and/or utilities. A BNSF railroad right of way is traversed by the project under agreement between the City and BNSF. Adjacent properties include commercial businesses. The Project will not affect current land uses on any properties. b. Has the project site been used as working farmlands or working forest lands? If so, describe. How much agricultural or forest land of long-term commercial significance will be converted to other uses as a result of the proposal, if any? If resource lands have not been designated, how many acres in farmland or forest land tax status will be converted to nonfarm or nonforest use? No. 1) Will the proposal affect or be affected by surrounding working farm or forest land normal SEPA Environmental checklist {WAC 197-11-960) May 2014 PageBof14 business operations, such as oversize equipment access, the application of pesticides, tilling, and harvesting? If so, how: No. c. Describe any structures on the site. None. d. Will any structures be demolished? If so, what? No. e. What is the current zoning classification of the site? None. The site is Right-of-Way. The site is adjacent to Commercial Arterial. f. What is the current comprehensive plan designation of the site? None. The site is Right-of-Way. The site is adjacent to Commercial Corridor. g. If applicable, what is the current shoreline master program designation of the site? N/A. h. Has any part of the site been classified as a critical area by the city or county? If so, specify. It is classified as a "Regulated Slope" by the City of Renton. i. Approximately how many people would reside or work in the completed project? None. j. Approximately how many people would the completed project displace? None. k. Proposed measures to avoid or reduce displacement impacts, if any: N/A. L. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: N/A. m. Proposed measures to ensure the proposal is compatible with nearby agricultural and forest lands of long-term commercial significance, if any: N/A. 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, mid- dle, or low-income housing. None. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. SEPA Environmental checklist (WAC 197-11-960) May 2014 Page 9 of 14 None. c. Proposed measures to reduce or control housing impacts, if any: None. 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? N/A b. What views in the immediate vicinity would be altered or obstructed? None. c. Proposed measures to reduce or control aesthetic impacts, if any: None. 11. Light and glare a. What type of light or glare will the proposal produce? What time of day would it mainly occur? None. b. Could light or glare from the finished project be a safety hazard or interfere with views? No. c. What existing off-site sources of light or glare may affect your proposal? None. d. Proposed measures to reduce or control light and glare impacts, if any: None. 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? None. b. Would the proposed project displace any existing recreational uses? If so, describe. No. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: None. 13. Historic and cultural preservation SEPA Environmental checklist (WAC 197-11-960) May 2014 Page 10 of 14 a. Are there any buildings, structures, or sites, located on or near the site that are over 45 years old listed in or eligible for listing in national, state, or local preservation registers located on or near the site? If so, specifically describe. None known. b. Are there any landmarks, features, or other evidence of Indian or historic use or occupation? This may include human burials or old cemeteries. Are there any material evidence, artifacts, or areas of cultural importance on or near the site? Please list any professional studies conducted at the site to identify such resources. None known. c. Describe the methods used to assess the potential impacts to cultural and historic resources on or near the project site. Examples include consultation with tribes and the department of archeology and historic preservation, archaeological surveys, historic maps, GIS data, etc. Since the new sewer line will be installed in the exact location of the existing sewer line, we don't anticipate impacting anything historic or cultural. d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and disturbance to resources. Please include plans for the above and any permits that may be required. None. 14. Transportation a. Identify public streets and highways serving the site or affected geographic area and describe proposed access to the existing street system. Show on site plans, if any. The project site can be accessed from Sunset Blvd N, Houser Way N or N 4th St. b. Is the site or affected geographic area currently served by public transit? If so, generally describe. If not, what is the approximate distance to the nearest transit stop? Sunset Blvd N serves as a route for public transit, however, no bus stops exist within close proximity to the project site. The nearest transit stop is about Y. mile away. c. How many additional parking spaces would the completed project or non-project proposal have? How many would the project or proposal eliminate? None. d. Will the proposal require any new or improvements to existing roads, streets, pedestrian, bicycle or state transportation facilities, not including driveways? If so, generally describe (indicate whether public or private). No. e. Will the project or proposal use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. f. How many vehicular trips per day would be generated by the completed project or proposal? If known, indicate when peak volumes would occur and what percentage of the volume would SEPA Environmental checklist (WAC 197-11-960) May 2014 Page 11 of 14 be trucks (such as commercial and nonpassenger vehicles). What data or transportation models were used to make these estimates? None. g. Will the proposal interfere with, affect or be affected by the movement of agricultural and forest products on roads or streets in the area? If so, generally describe. No. h. Proposed measures to reduce or control transportation impacts, if any: None. 15. Public services a. Would the project result in an increased need for public services (for example: fire protection, police protection, public transit, health care, schools, other)? If so, generally describe. No. b. Proposed measures to reduce or control direct impacts on public services, if any. None. 16. Utilities a. Circle utilities currently available at the site: electricity. natural gas, water, refuse service, telephone, sanitary sewer, septic system, other ____ _ b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. See description of proposal in A.11 above. Sewer system upgrades are proposed for the project. The sewer utilities are owned by the City of Renton. Construction and operation will be provided by the City of Renton through private contractors and the City Maintenance Department. The sewer system upgrades will generally require temporary bypass sewer systems, excavation, installation of new sewer pipe and manhole, cured in place pipe installation, and site restoration. C. Signature The above answers are t e and complete to the best of my knowledge. I understand that the o them to make its decision. Signature: Name of sig e .....J.ett,v 1/e,~J Position and Agency/Organization C,v,,._ l::Nt:.1Af*1!l'!'/? UT CTY.e>,.c-~J Date Submitted: SEPA Environmental checklist (WAC 197-11-960) May 2014 Page 12 of 14 GEOTECHNICAL ENGINEERING REPORT Central Renton Sewer Interceptor Upsize Project Renton, Washington Prepared for: BHC Consultants and City of Renton Wastewater Utility Engineering Project No. 140013 • May 28, 2014 FINAL DRAFT Aspect 'CONSULTING ,, '1,A5pect 6c ON SULT ING GEOTECHNICAL ENGINEERING REPORT Central Renton Sewer Interceptor Upsize Project Renton, Washington Prepared for: BHC Consultants and City of Renton Wastewater Utility Engineering Project No. 140013 • May 28, 2014 FINAL DRAFT Aspect Consulting, LLC Erik 0. Andersen, P.E., P.Eng. Senior Associate Geotechnical Engineer eandersen@aspectconsulting.com W:\_GEOTECH\140013 Central Renton Interceptor Reline-Upsize\Deliverables\Geotechnical Report\Draft\Central Interceptor Geotechnical Report DRAFT.docx :;t,:· ASPECT CONSUL TING Contents 1 Project Description and Scope of Work .................................................... 1 2 Surface and Subsurface Conditions .......................................................... 2 2.1 Surface Conditions............................... .2 2.2 Subsurface Conditions ............................ 2 2.2.1 Geologic Mapping...... . ... 2 2.2.2 Previous Explorations by Others.... . 2 2.2.3 Subsurface Conditions in Aspect Explorations . 2 2.2.4 Groundwater Conditions ....................................................................... 3 3 Conclusions and Recommendations ......................................................... 4 3.1 General.... .. .............. .4 3.2 Open Cut Sewer Replacement .................................................................. .4 3.2.1 General................................................. . ............................ .4 3.2.2 Temporary Excavations ....................................................................... 4 3.2.3 Pipe Bedding................................. ... . ... 5 3.2.4 Trench Backfill................................. .. ........... 6 3.2.5 Trench and Pavement Restoration .. ... 7 3.3 Pipe Bursting Sewer Replacement ............. 7 3. 3.1 Pipe Bursting Process ..................... 8 3.3.2 Implications of Existing Trench Backfill.. . ............................... 8 3.3.3 Possible Ground Displacements.... . ... 9 3.3.4 Required Excavations......................... .. .. 9 3.3.5 Implications of Existing Sags/Deviations on Pipe Bursting ................... 9 3.3.6 Maintenance of Existing Grade ...................... 9 3.4 Replacement Manhole Structure .. . .. . .. . .. .. .. . .. .. . .. . .. . .. . .. . .. . .. .. .. .............. 10 3.5 Construction Dewatering ............................ .. .... 10 3.6 Earthwork and Erosion Control....... . ............ 11 3.6.1 Structural Fill and Compaction................................. .. .. 11 3.6.2 Wet Weather Earthwork................... ...12 3.6.3 Temporary and Permanent Erosion and Sediment Control Considerations ................................................................................... 13 4 References ................................................................................................. 14 5 Uncertainty and Limitations ..................................................................... 15 -----------------------------~·---·-----~ PROJECT NO. 140013 • MAY 28. 2014 FINAL DRAFT ASPECT CONSUL TING List of Figures 1 Site Location Map 2 Site and Exploration Plan 3 Design Earth Pressures for Temporary Shoring 4 Typical Trench Pavement Reconstruction Detail List of Appendices A Previous Geotechnical Data (by others) B Subsurface Exploration Methodology and Boring Logs (Current Study) C Geotechnical Laboratory Test Results (Current Study) ii FINAL DRAFT PROJECT NO. 140013 • MAY 28, 2014 ASPECT CONSUL TING 1 Project Description and Scope of Work This report presents the results of a geotechnical engineering study by Aspect Consulting LLC (Aspect) in support of improvements to a section of the Central Renton Sewer Interceptor Sewer in Renton, Washington. A vicinity map showing the project location within the City of Renton is presented in Figure 1. Figure 2 is a Site and Exploration Plan. The project includes upsizing of approximately 125 lineal feet of existing 12-inch vitrified clay pipe (VCP). The limits of this portion of the project start at the existing manhole in Sunset Boulevard N, and extend west toward N. 4th Street to a manhole on the east side of the BNSF railroad. This section of pipe was originally anticipated to be replaced with nominally 18-inch diameter pipe for increased flow capacity, however, at the time of finalizing this report, it was decided to upsizc to 24-inch diameter pipe to improve flow characteristics. Conventional open-trench replacement methods are considered in this report. Upsizing by in-situ (pipe bursting/reaming) is also discussed, however in-situ upsizing by more than 50% of the original pipe diameter is generally not recommended. . Jack and bore construction methods were also considered initially, however, these construction methods were eliminated as a feasible alternative during preliminary design and therefore arc not discussed as a potential alternative in the report. The western (i.e., downstream) manhole will be replaced as part of this project. The purpose of our work is to provide geotechnical recommendations in support of these improvements. Our scope included reviewing existing subsurface information in the project area; drilling and sampling exploratory borings; performing laboratory testing; completing engineering analyses to develop geotcchnical conclusions and recommendations for design and construction; and preparing this report. PROJECT NO. 140013 • MAY 28, 2014 FINAL DRAFT ASPECT CONSULTING 2 Surface and Subsurface Conditions 2.1 Surface Conditions The site area includes Sunset Boulevard North and City-owned undeveloped Right of Way to the west. Adjacent property to the west is an active BNSF railroad spur. Sunset Boulevard (State Route 900) is a heavily used 7-lane arterial. Existing pavement surface is at approximate Elevation +55 feet at the eastern (upstream) manhole. The existing undeveloped Right of Way to the west includes a gravel-surfaced gently sloping (less than 10%) area immediately adjacent to Sunset Blvd.; this area appears to be occasionally used as overflow parking. The west side of the gravel-surfaced area is bordered by a chain link fence, west of which is a 10-foot high slope extending down toward the railroad tracks at an average inclination of about 1. 7H: IV. Vegetation on this slope consists of blackberry bushes and small saplings. The toe of this slope is at approximate Elevation +43 feet. To the west of this, the ground is relatively flat. The western (downstream) manhole is near the toe of this slope, at approximate rim Elevation +42.5 feet. The BNSF railroad right of way is just west of the toe of the slope. 2.2 Subsurface Conditions 2.2.1 Geologic Mapping The project area is situated near the edge of a low-lying valley floor at the toe of an upland slope. The geologic map for the site area (Mullineaux, 1965) indicates the site area to be underlain by recent alluvium on the low-lying valley floor to the west and undifferentiated glacial sediments on the upland slope. 2.2.2 Previous Explorations by Others We were provided witl_1 a previous geotechnical engineering report by Golder Associates Inc. (Golder, 2003). The Golder study included two borings in close proximity to the subject project. Boring GB-15 was drilled near the intersection of Houser and 4th to the west of the BNSF railroad tracks; and boring GB-14 was drilled near the upstream manhole in Sunset Blvd North. Site data from these borings are provided in Appendix A of this report. The Golder borings reported loose to medium dense granular fill and recent alluvium. 2.2.3 Subsurface Conditions in Aspect Explorations 2 Aspect completed two exploratory soil borings at the locations shown on the Site and Exploration Plan (Figure 2). Soil boring AB-1 was drilled above the existing sewer line to explore and sample existing trench backfill soil. Soil boring AB-2 was drilled and sampled about 20 feet north to explore and sample "native soil". Boring AB-2 was completed as 2-inch-diameter piezometer to monitor ground water during the design period. This piezometer is the property of the City of Renton and as such it available for use prior to and during construction. Ultimately the piezometer will need to be abandoned in accordance with Ecology requirements. FINAL DRAFT PROJECT NO. 140013 • MAY 28, 2014 ASPECT CONSULTING Summary boring logs of the completed explorations, and more detailed descriptions of the subsurface exploration methodology, are included in Appendix B. A summary of the completed laboratory test methodology and results are included in Appendix C. In our borings we encountered fill, alluvium, and glacial advance outwash. Each of the soil units arc described in more detail below. Fill: Fill was encountered in each boring. Trench backfi]I was encountered (intentionally) in boring AB-I which was dri11cd and terminated above the crown of the existing sewer line; this material consisted of loose to medium dense, slightly silty, sandy GRAVEL. In boring AB-2, fill consisting of loose to medium dense silty to very silty, gravelly SAND to sandy GRAVEL, was encountered down to about 14 feet below existing ground surface. Alluvium: Below the fi]I in boring AB-2 we encountered very loose to medium dense, clean to slightly silty, moist to saturated, gravelly SAND to sandy GRAVEL. flased on its elevation, color, density, and composition, we interpreted this soil to be alluvium associated with the Cedar River. Advance Outwash: At a depth of about 23 Y, feet below ground surface, we encountered very dense, gray, gravelly SAND. Based on its color and density, we interpreted this material to be glacially overridden advance outwash. Boring Afl-2 was terminated in advance outwash at a depth of 3 I 'I, feet below ground surface. 2.2.4 Groundwater Conditions At the time of dri11ing (March 20, 2014), we encountered wet soil and possible standing groundwater in boring AB-2 at a depth of 19 feet, or Elevation + 34 feet. A subsequent water level reading taken on April 7, 2014 encountered groundwater at a depth of 21.2 feet below top of casing, or corresponding Elevation + 32. l feet. In the Golder (2003) report, ground water was reported and subsequently measured in their boring/piezometer GB-15 near the intersection of Houser and 4•h, at approximate Elevation +29 feet in May 2003. Groundwater conditions reported are for the specific location and date indicated. Groundwater levels will vary by location, local precipitation, local subsurface conditions, and other factors. PROJECT NO. 140013 • MAY 28, 2014 FINAL DRAFT 3 ASPECT CONSUL TING 3 Conclusions and Recommendations 3.1 General From a geotechnical engineering perspective, conventional open-trench construction is the most suitable method of pipe replacement for this project. We encountered ground water during drilling our boring/piezometer AB-2 at approximate Elevation + 34 feet; we subsequently measured groundwater in this piezometer at approximate Elevation + 32 feet. Golder (2003) reported ground water in their piezometer GB-15 at approximate Elevation +29 feet. At the downstream manhole, the existing sewer is at approximate invert Elevation +31 feet. Replacement of this downstream manhole structure will likely extend about 2 feet below the invert elevation, or approximate Elevation +29 feet. With groundwater ranging from Elevation +29 to+ 34 feet, excavations could extend as much as 5 feet below groundwater, thus construction dcwatering is anticipated to be required. The following sections of this report provide detailed recommendations for open cut sewer replacement, in situ upsizing, and general site earthwork considerations. 3.2 Open Cut Sewer Replacement 3.2.1 General In our opinion and based on our experience, conventional open trench construction will likely be the fastest, and therefore potentially the most economical method of completing this upsizing project. The disadvantage of this method is the necessary temporary closure of Sunset Blvd. This section presents geotechnical design considerations and recommendations pertaining to open cut trench construction. 3.2.2 Temporary Excavations 4 Maintenance of safe working conditions, including temporary excavation stability, is the responsibility of the contractor, and all excavations must comply with current federal, state and local requirements. Cuts greater than 4 feet in height should be sloped or shored in accordance with Part N of WAC 296-155 (Washington Administrative Code) or properly shored. The existing fill and alluvial soils classify as Type C Soil, and temporary, unsupported, cut slopes in these materials should be inclined no steeper than I .SH: IV (horizontal : vertical). Where the temporary excavations extend below groundwater (i.e., along the part of the project), flatter side slopes and/or shoring will be required. Temporary slopes should be protected from erosion, as necessary, by covering the cut face with well-anchored plastic sheets. Heavy construction equipment, construction materials, excavated soil, and vehicular traffic should not be allowed any nearer to the slope crest than half the height of slope, measured from the top edge of the excavation, unless there is a shoring system that has been designed for support of the additional lateral pressure. FINAL DRAFT PROJECT NO. 140013 • MAY 28, 2014 ASPECT CONSULTING Exposure of personnel beneath properly prepared temporary cut slopes should be kept to a 1111111mum. Where trench excavations are deep and/or spatial limitations do not pennit sloping of the excavation, temporary shoring will be required. Design and construction of such shoring systems should be the responsibility of the contractor, who should be required to present a submittal of the design details for review by the Engineer prior to construction. However, general recommendations for design and implementation of trench shoring systems arc presented below. • Shoring should be designed and constructed to support lateral soil loads, and any surcharge loads from construction equipment, construction materials, excavated soi Is, and vehicular traffic. Anticipated lateral soil loads are presented for design guidance in Figure 3 of this report. • Precautions should be taken during removal of the shoring or sheeting materials to minimize disturbance of the pipe. underlying bedding materials, adjacent structures/utilities and surrounding soils. • Trench boxes, if used, should be adequately reinforced to withstand the lateral forces to which they will be subjected. • Trench boxes should be of sufficient dimension. both vertically and laterally, to snpport the excavation without excessive deformation of the natural soils adjoining the open excavation. I lowever, by their very nature, trench boxes normally arc incapable of positive support of the trench walls and some deformation and possible spalling of the excavated slopes should be anticipated if trench boxes are employed. The contractor should be held responsible for repair of any deformation or damages occur to adjoining facilities where trench box methods have been used. • The open trench excavation should be backfilled immediately after the trench box has been moved. • Trenches must be shored when heavy construction equipment and excavated soils are allowed within a lateral distance, measured from the edge of the excavation. equal to half the depth of the excavation. 3.2.3 Pipe Bedding General recommendations relative to pipe bedding and subgrade are presented below: • Pipe bedding material, placement compaction, and shaping should be in accordance with the project specifications and the pipe manufacturers recommendations. As a minimum. the pipe bedding should meet the gradation requirements for Gravel Backfill for Pipe Zone Bedding, Section 9-03. 12(3) of the PROJECT NO 140013 • MAY 28, 2014 FINAL DRAFT 5 ASPECT CONSUL TING WSDOT Standard Specifications. • Pipe bedding materials should be placed on relatively undisturbed native soils, or compacted fill soils. If the subgrade soils are disturbed, the disturbed material should be compacted in place or removed and replaced with additional compacted bedding material. • In areas where the trench bottom encounters very soft or organic- rich subgrade soils, it will be necessary to over-excavate the unsuitable material and backfill with pipe bedding material. However, the depth of over-excavation should generally be limited to a maximum of2 feet, and should be confirmed by the geotechnical engineer. If necessary, and as determined by the geotechnical engineer, a soil separation-grade geotextile may be utilized to limit trench base over-excavation requirements. • Pipe bedding should provide a firm, uniform cradle for the pipe. We recommend that a minimum 4-inch thickness of bedding material beneath the pipe be provided. Larger thicknesses of bedding may be necessary to prevent loosening and softening of the natural soils during pipe placement. The pipe bedding should extend to a level at least 6 inches above the pipe crown, as indicated on Figure 4, or such greater thickness as may be required by the pipe manufacturer and/or the City of Renton. • Pipe bedding material and/or backfill around the pipe should be placed in layers and tamped to obtain complete contact with the pipe. 3.2.4 Trench Backfill 6 We recommend that trench backfill meet the specifications for structural fill, as described in Section 3.6.1 of this report During placement of the initial lifts, the trench backfill material should not be bulldozed into the trench or dropped directly on the pipe. Furthermore, heavy equipment should not be permitted to operate directly over the pipe until a minimum of2 feet of backfill has been placed in order to prevent deformation or breakage of the new lines. Trench backfill should be placed in 8-inch (maximum) lifts and compacted using mechanical equipment to at least 95 percent of its maximum dry density, as determined by testing in general accordance with ASTM D 1557 (Modified Proctor). As an alternative to compacted granular backfill, controlled density fill (CDF) or controlled low strength material (CLSM), per WSDOT Standard Specification 2-09.3(1 )E, may be used. The advantage of this material is that compaction is not required, a disadvantage is that the material must be given sufficient time (several days) to cure before it can be exposed to traffic. FINAL DRAFT PROJECT NO. 140013 • MAY 28, 2014 ASPECT CONSUL TING 3.2.5 Trench and Pavement Restoration In order to minimize the potential for undennining the existing pavement section, and to reduce the potential for reflective cracking above proposed utility trenches, the following recommendations should be implemented during construction: • No trench excavation should be advanced greater than 4 feet without implementing a positive shoring system. Requiring excavation inside a temporary shoring system will reduce the extent of soil relaxation adjacent to the excavation. As discussed previously, normal trench box systems do not provide positive support for the trench walls and are intended primarily to provide for worker safety. Limiting the extent of trench wall relaxation is key to maintaining proper support for adjacent pavements. • All saw cuts associated with trenching excavations should be made 1.5 to 3 feet back from the anticipated top of trench depending on proposed trench excavation depth. The recommended trench geometry is presented in Figure 4 of this report. • If during excavation of any trench, the existing pavement section is undermined at any location, the undermined pavement should be sawcut and removed prior to pavement reconstruction. • A minimum 6-inch thick layer of Crushed Surfacing Base Course (CSBC) should be placed and compacted to 95 percent of its maximum dry density, as determined using ASTM D 1557 (Modified Proctor), below all reconstructed pavement sections. • The reconstructed pavement section should consist of Hot Mix Asphalt (HMA) or Portland Cement Concrete Pavement (PCCP). The HMA or PCCP should be installed in accordance with City of Renton Standard Plans. 3.3 Pipe Bursting Sewer Replacement At the time of our initial studies, it was anticipated that the new pipe would be up sized from 12 inches to 18 inches. Based on the observed trench backfill conditions over the existing vitrified clay pipe (VCP) wc concluded that pipe bursting would be a feasible method of pipe replacement. However, at the time of this final draft report, it has been decided that the new pipe will be 24 inches in diameter. In-situ upsizing by more than 50% of the original pipe diameter has not been proven to be effective in the industry and is considered ·'experimental". Therefore, we no longer advocate pipe bursting for this project. The following discussion is for reference and information purposes. PROJECT NO. 140013 • MAY 28, 2014 FINAL DRAFT 7 ASPECT CONSUL TING 3.3. 1 Pipe Bursting Process The pipe bursting process consists of in-situ fragmentation, displacement, and replacement of the existing pipe typically with new polyethylene pipe of equal or larger diameter. Typically, the existing pipe is split by a hydraulic, static, or pneumatic bursting-head or nosecone to which the new polyethylene pipe is attached. As the existing pipe is burst, the new polyethylene pipe is pulled into position along the alignment of the old pipe. A chain or cable towline attached to a hydraulic jacking or winch system is used to advance the bursting head. Typically, the polyethylene pipe installed during the pipe bursting process consists of20-to 40-foot long sections that are welded together on site. Pipe bursting is conducted between two points of access; i.e., station-to-station with stations consisting of existing manholes, or insertion and extraction pits. Information regarding the proximity of other service lines or underground structures, and the location of any documented prior service repairs that reinforce the existing pipe should be evaluated for their potential impact on the proposed undertaking. Such information is utilized to select the most appropriate pipe bursting methods and tools, and to evaluate the potential effects of vibrations and ground displacements, associated with the bursting operations. In generaL pipe bursting should not be used when the bursting head will pass within 2.5 feet of other buried pipes and within 8 feet of sensitive surface structures (TTC, 200 I). Where distances are less than these, special provision should be made to protect the existing structures, such as excavating (daylighting) at the crossing point to relieve potential induced-stress on the existing features (TTC, 200 I). 3.3.2 Implications of Existing Trench Backfill 8 Favorable ground conditions for pipe bursting are reportedly within soils that can be moderately compacted such that the enlarged hole behind the bursting head does not cave in before the replacement pipe is installed. This scenario results in minimal lateral extent of outward ground movement because the volume change is accommodated by the local soils. In addition, the absence of caving behind the bursting head will result in lower drag and reduced tensile stress on the pipe during installation. The magnitude of the drag force on the pipe during installation is highly dependent on the contractor's equipment and procedures. Less favorable ground conditions include densely compacted soils or fills, and soils below the water table. These ground conditions tend to increase the force required for the bursting operation. For pipe bursting to be successful at the project site, information regarding the density of the existing soil backfill and adjoining native materials was required. Our boring AB-1 indicates that the trench backfill is relatively loose. Therefore, it is our opinion that pipe upsizing by means of pipe bursting is feasible along the proposed alignment. However, the contractor should anticipate that variation in local fill soil conditions, and the presence or absence of ground water, will affect the amount of force required to burst and pull replacement pipe. Much of the pipe alignment is above groundwater, but the west end will likely dip below the groundwater table. FINAL DRAFT PROJECT NO. 140013 • MAY 28. 2014 ASPECT CONSULTING 3.3.3 Possible Ground Displacements Some ground displacement should typically be expected as a result of a pipe bursting procedures. Displacements tend to be localized and develop in the direction of least resistance. The magnitude and orientation of the displaced soil is largely dependent upon the degree of pipe upsizing, the type and compaction level of the soil surrounding the pipe, and the depth of the pipe. Typically, loose soils will undergo uniform displacement where more densely compacted soils at the same depth will most likely exhibit vertical (heave) expansion. The localized restraining effect of strong soils along trench sides and bottom also serves to direct ground movement upward above the pipe. Conversely, if the existing pipes arc founded on weak soil, displacement would be directed downward. Generally, ground movement (heaving) that may distort the existing road surface is observed during pipe bursting conducted on pipes shallower than about eight (8) feet, and bursting of pipes located deeper than about ten ( 10) feet does not typically cause surface heaving problems. Survey elevation information indicates the existing pipe cover is greater than 10 feet at all locations along the subject project alignment. 3.3.4 Required Excavations Invariably, some surface disturbance along the existing alignment is necessary for the excavation of jacking/receiving pits. These excavations can require an area on the order of24 feet by 12 feet. Given the depth of the sewer line we anticipate that temporary shoring will be required at all jacking and receiving pits. Internally braced temporary shoring should be utilized for this project. Recommended design earth pressures for temporary braced shoring are presented in Figure 3. However, the contractor should be responsible for the temporary shoring system design, which should be performed by a licensed engineer skilled and experienced in the design of such systems. Shoring system designs should be submitted for review and approval of the engineer prior to construction. Notwithstanding, successful installation and removal of the temporary shoring system is the responsibility of the contractor. 3.3.5 Implications of Existing Sags/Deviations on Pipe Bursting Experience has shown that localized sags larger than one half the pipe diameter can be problematic for pipe bursting operations. If sags exist along this section. this would be another factor to consider. 3.3.6 Maintenance of Existing Grade As with any gravity system. maintaining the established grade is very important. However, because the bursting head has a larger diameter than the replacement pipe, a cavity is developed in the soil, allowing the replacement pipe to take up different positions within the cavity. Depending upon the local soil conditions, site conditions, and installation procedures the following outcomes are generally anticipated: PROJECT NO. 140013 • MAY 28. 2014 FINAL DRAFT 9 ASPECT CONSUL TING • If soil displacements arc predominately upward, a larger new pipe will most likely be situated with its centerline higher than the original pipe, but with a matching invert elevation, • lfthe soil displaces uniformly, the centerline of the larger new pipe will match the centerline of the original pipe. • lfthe soil displacements are predominately downward, the larger new pipe will most likely be situated with its crown matching the original pipe crown position, but with a lower invert elevation. • Asymmetrical soil displacement, resulting from the restraining effects of adjacent buried structures, can result in a lateral shift in new pipe position relative to the original. Case histories suggest that, with careful planning, maintenance of the existing pipe grades is achievable when close attention and frequent surveys are conducted. Sometimes, the presence of unforeseen large boulders, existing concrete pipe collars, CDF backfill, adjacent utilities, etc., will prevent the advancement of the pipe bursting head or cause it to deflect above or below the design invert level. These types of obstructions occur quite commonly despite the amount of available subsurface data and/or as-built and maintenance records, and it is recommended that contingencies be provided in the contract to deal with such problems if they occur. 3.4 Replacement Manhole Structure The replacement manhole structure will be subjected to buoyancy due to being partially below ground water. We recommend this manhole be designed assuming that ground water could potentially rise as high as Elevation +35 feet during an extreme high ground water condition. With this manhole structure in close proximity to the existing active BNSF railroad, temporary shoring will be required to facilitate construction. In our opinion, temporary shoring could be accomplished using internally braced interlocking steel sheet piles. An advantage to this type of shoring is that ground water can be more easily controlled. It would also be possible to utilize a 4-sided trench box, in combination with a construction dewatering program. Recommended earth pressures for design of temporary shoring are presented in Figure 3. 3.5 Construction Dewatering 10 A temporary excavation for the replacement manhole structure at the west (downstream) end of the project could extend as much as 5 feet below ground water. Construction dewatering will likely be necessary. It should ultimately be the contractor's responsibility to select and implement an appropriate dewatering system. However, in our opinion, temporary sumps and trash pumps will not sufficiently dewater the excavation. On the other hand, use of deep wells, resulting in water lowering over a large area, is likely to cause ground settlement over a relatively large area including the BNSF FINAL DRAFT PROJECT NO 140013 • MAY 28, 2014 ASPECT CONSULTING rai I road tracks. The magnitude of the settlement and its areal extent would depend on the amount of change in the water level, the length of time the water level was lowered, and the compressibility and thickness of the underlying soils. To limit potential dewatcring-induccd settlement to the area immediately adjacent to the trench and downstream manhole area, we recommend a well point dewatering system be utilized. Well points, or eductor wells, consist of a series of closely spaced, small diameter, screened pipes that are driven or drilled in place, and connected to a manifold which in turn is connected to large vacuum pump operating on the ground surface. A properly designed, installed, and operated wellpoint system can draw down the ground water level within the work area. without causing a large drawdown cone, such as occurs with deep dewatering wells. We recommend the contractor retain an experienced wellpoint specialist to install and operate the dewatering system. We recommend the contractor be required to submit a dcwatering plan for review by Aspect to evaluate other potential impacts. W c recommend the plans and specifications include provisions requiring contractors to maintain a minimum and maximum draw-down from dewatering. The contractor could utilize existing monitoring wells to aid in the detennination of the effectiveness of the dewatering system. However, design and implementation of any dewatering system should remain the responsibility of the contractor. Water produced by construction dewatering could potentially be discharged to the local storm or sanitary sewer. Discharge water quality must meet Ecology's Water Quality Standard for Surface Waters requirements prior to discharge to the stonn sewer system. If the dewatering effluent does not meet Ecology standards, it could likely be discharged into the sanitary sewer. 3.6 Earthwork and Erosion Control ------------------------ 3. 6. 1 Structural Fill and Compaction For purposes of this report, material placed under pavement structures or sidewalks, used as trench backfill, or used as backfill behind below-grade structures such as catch basins, infiltration galleries, or pipes, is classified as structural fill. Imported structural fill (Gravel Borrow) should consist of clean, non-plastic, relatively free-draining, sand and gravel free from organic matter or other deleterious materials. Such materials should contain particles of less than 4 inches maximum dimension, with less than 7% fines (material passing the #200 sieve; based on the %-inch fraction), as described in Section 9-03.14(1) of the WSDOT Standard Specifications (WSDOT, 2014). Fines should be non-plastic. Imported structural fill placed as base course below asphaltic pavement should meet the requirements ofCrushcd Surfacing Base Course (CSBC), as described in Section 9- 03.9(3) of the WSDOT Standard Specifications (WSDOT, 2014). PROJECT NO. 140013 • MAY 28. 2014 FINAL DRAFT 11 ASPECT CONSUL TING In general, much of the existing on-site fill and trench backfill material is predominantly granular with variable fines (clay and silt) content. Providing earthwork is completed during dry weather conditions. much of the on-site soil will be suitable for re-use as structural backfill. However, based on recent similar utility project experience, it is probable that WSDOT will discourage the re-use of on-site soils as structural trench backfill within the travel lanes of State Route 900. Structural fill should be placed in loose, horizontal, lifts ofnot more than 8 inches in thickness and compacted to at least 95 % of the maximum dry density, as detennined using test method ASTM D 1557 (Modified Proctor). At the time of placement, the moisture content of structural fill should be at or near optimum. The procedure required to achieve the specified minimum relative compaction depends on the size and type of compaction equipment, the number of passes, thickness of the layer being compacted, and the soil moisture-density properties. When the first fill is placed in a given area, and/or anytime the fill material changes, the area should be considered a test section. The test section should be used to establish fill placement and compaction procedures required to achieve proper compaction. The geotechnical consultant should observe placement and compaction of the test section to assist in establishing an appropriate compaction procedure. Once a placement and compaction procedure is established, the contractor's operations should be monitored and periodic density tests performed to verify that proper compaction is being achieved. 3.6.2 Wet Weather Earthwork 12 The existing site soils are not particularly moisture sensitive, but may prove to be difficult to handle or traverse with construction equipment during periods of wet weather. Therefore, general recommendations relative to earthwork performed in wet weather or in wet conditions are presented below. These recommendations should be incorporated into the contract specification and should be required when earthwork is performed in wet conditions: • Site stripping and fill placement should be accomplished in small sections to minimize exposure to wet weather. Excavation or removal of unsuitable soil should be followed promptly by placement and compaction of a suitable thickness of clean structural fill. The size and type of construction equipment used may have to be limited to prevent soil disturbance. • Material used as structural fill should consist of clean granular soiL of which not more than 5% passes the U.S. Standard No. 200 sieve, based on wet sieving the fraction passing the %-inch sieve. The fine-grained portion of structural fill soils should be 11011- plastic. • No soil should be left un-compacted so it can absorb water. FINAL DRAFT PROJECT NO. 140013 • MAY 28, 2014 ASPECT CONSULTING Stockpiles of excavated soil should either be shaped and the surface compacted, or be covered with plastic sheets. Soils that become too wet should be removed and replaced with clean granular materials. • Excavation and placement of fill should be monitored by someone experienced in wet weather earthwork to detennine that the work is being accomplished in accordance with the project specifications and the recommendations contained herein. 3.6.3 Temporary and Permanent Erosion and Sediment Control Considerations Soil erosion can be minimized by careful grading practices, the appropriate use of silt fences and/or straw bales and by implementing the recommendations in the Wet Weather Earthwork section of this report. Surface runoff control during construction should be the responsibility of the contractor. All collected water should be controlled and discharged in accordance with local regulations. Grading measures, slope protection, ditching, sumps, dewatering, and other measures should be employed as necessary to permit proper completion of the work. Permanent control of surface water should be incorporated in the final grading design. Water should not be allowed to pond immediately adjacent to foundations or paved areas. PROJECT NO. 140013 • MAY 28. 2014 FINAL DRAFT 13 ASPECT CONSUL TING 4 References 14 Mullineaux, D.R., 1965, Geologic Map of the Renton Quadrangle, King County, Washington, USGS Geologic Map GQ-405. Trenchless Technology Center (TTC), 2001, Guidelines for Pipe Bursting, TTC Technical Report 2001.002, March 200 I. Washington State Department of Transportation (WSDOT), 2014, Standard Specifications for Road, Bridge and Municipal Construction, Manual M 41-10. FINAL DRAFT PROJECT NO. 140013 • MAY 28, 2014 ASPECT CONSULTING 5 Uncertainty and Limitations Work for this project was performed for BHC Consultants and City of Renton Utilities (Client), and this report was prepared in accordance with generally accepted professional practices for the nature and conditions of work completed in the same or similar localities. at the time the work was performed. Experience has shown that subsurface soil and groundwater conditions can vary significantly over small distances. Inconsistent conditions can occur between explorations and may not be detected by a geotechnical study. Further geolechnical evaluations. analyses and recommendations may be necessary for the final design of this project. This report does not represent a legal opinion. No other warranty, expressed or implied, is made. If there is a substantial lapse of time between the submission of this report and the start of construction, or if conditions have changed due to construction operations at or near the site, it is recommended that this report be reviewed to determine the applicability of the conclusions and recommendations considering the changed conditions and lime lapse. All reports prepared by Aspect Consulting for the Client apply only to the services described in the Agreement(s) with the Client. Any use or reuse by any party other than the Client is at the sole risk of that party, and without liability to Aspect Consulting. Aspect Consulting's original files/reports shall govern in the event of any dispute regarding the content of electronic documents furnished to others. PROJECT NO. 140013 • MAY 28. 2014 FINAL DRAFT 15 FIGURES 'Pl 0 2,000 ' ' Feet I Site Location f,:,·,1,,, 4.000 ' Site Location Map Central Renton Sewer Interceptor Upsize Renton, Washington ".A~r:~c t llf-------M,'-,;,-}-~~-4---+--~"~;=;,~, ---a 140013 sec F/GURF 1110 1 ~------------···-- -$-01-15 WSDOT PROPOSED UPSIZE EXTENTS i. ·I '/ '/ . .' / j,.f,' I 1/ f._i i ! i l ! ; L~t---------------1 -=.;::::::-1 1 SHe and Exf]loratlon Plan j Cec.tr•I Renton Sewe, lnte,c,pw ·J~s,,e Al·Z+ Aspect fxplorat,on Des,gnat,on an<l Locat,on Gl·14..p Previous Bonng,Gol~er 2003', Ren:on W~•"rngton 2 :>-----B-----+:-X -j NOTES: I.SB FOR: xe":H: EXISTING GROUND J SURFACE X/2 ,--------, ___J_ f--------1 0.4(i)(l-X/B)q SURCHARGE PRESSURE i=O H>x>H/2: i=0.5 H/2>x>H/4: i=0.75 H/4 >x: i=l.0 CONSTRUmON SURCHARGE = q J J I J BRACED f-----1 / SHORING WALL I 28H II RETAINED SOIL EARTH PRESSURE BOTIOM OF EXCAVATION ASSUMED r GROUNDWATER LEVEL ci NET PASSIVE PRESSURE I. ASSUMEDSOILCONOffiONS: ·, = I20PCF, •I·= 28°, l,a= 0.36, l,p= 2.8 2. CONSTRUmON SURCHARGE PRESSURE SHOULD BE ADDED USING THE FORMULA ABOVE. 3. SHORING EMBEDMENT (0) SHOULD BE DETERMINED BY SOLVING FOR MOMENT EQUILIBRIUM ABOUT THE LOWEST BRACE. 0 SHOULD BE NOT LESS THAN IO FT. 4. A FACTOR OF SAFETY Of 1.5 HAS BEEN APPLIED TO THE NET PASSIVE PRESSURE SHOWN. = H = ,, ii S. DISTANCES ARE IN UNITS Of FEET; PRESSURES ARE IN UNITS OF POUNDS PER SQUARE FOOT. DIAGRAM IS NOTTO SCALE. ~------------------------1§ Design Earth Pressures for Temporary Shoring Central Renton Sewer Interceptor Upsize Renton, Washington '--As_p_e __ Ct-:_-_-_-_M-_A-_Y--_2-_0-1:4:::::::~EA/-~-,~S-C:c:::_:--,,,-ce-,-"----,! L_ _______________________ _L__._c_o_N,_v_,_"_'G'-'----'1"'40:c:,'0"'1"'--'----'S"'c"'c __ _L_ __ 3 __ _J~ EXISTING ASPHALT I I NEW HMA PAVEMENT EXISTING ASPHALT = = ] 6" __l ~------- CSBC I I I I X I I X I I I I I I I TRENCH I I BACKFILL I I I I I VARIES I I I I : J .. MIN : _:___i . I e,e, "'°''G MmR'" t O l I I L_--'-______ _J -- I VARIES I NOTES: 1. TRENCH EXCAVATIONS LESS THAN 6 FEET DEEP, X = 1.5 FEET. 2. TRENCH EXCAVATIONS GREATER THAN 6 FEET DEEP, X = 3 FEET. 0 i 1 f ' ] . ~ 0 " ~----------------------1i Typical Trench Pavement Reconstruction Detail Central Renton Sewer Interceptor Upsize Renton, Washington ' ' £ ' ! >-,-As--p-e_c_t~f--_ --'M=A=Y·=20~1=4=====~c~,\~Sc:c==~~-e,,-,,-,,-,,-----li 'CONSULTING 140013 sctc 4 ~ ~-------------------~---~-~=~~~-=--~---~ APPENDIX A Previous Geotechnical Data (by others) ,r-.-- ~ . . . £1 ~I 'I l 'I ! ~:::8~~~(:t~-:-~ 1t•s ,~c·,,ua s\·,;tn ,,.ivn !"''" I :,bla r,e,;J at cwbra::,-'~ locat:w,; .mlv Ti·e nier;:rdat ~ 1 bc~,ecr Ille,~ :rr;.a·,~cs ha,s t~,,.. nfcn,d bn gculc>:pa ,r,·d~~c.a aro s-~ ·"'~\- "'Y 11cm ·~at s~O'-'" ' '" "-i .,,-1'--~-.---_, ·-·- Oa _'.; 7, : _ _:__,,,/'- ,I I I l_~ I ~.-;;;" I l ~I . Gjl-H SE~' ,,<•,cp ,•."N._e..',',CFi ·-c-c.-.,-..~..:_':;__~~~-~i'. . -I ----< __ I " PLAN AND PROFILE Golder Associates '!ECORD OF BOREHOLE GB-14 SHEET 1 of 1 PROJECT: HOR/Sunset Interceptor/WA DRILLING MElHOD: Hollow Siem Auger DATUM: MSL ELEVATION: 55.87 PROJECT NUMBER: 033-1504.000 DRILLING DATE: 5/22/03 LOCATION: ~ ~ ~ ~ I ~= w- 0 0 5 10 15 20 ~ ~ " 25 0 0 I ~ w • ~ z ~ al • E E • • ~ e !l £ ' • • , < E il ' • 0 " £ ' " • Sunset B!vd Renton WA DRILL RIG: Mobile B-59 S01LPROFkE " ELEV. ~ l:g OESCRIPTiON ~ ~~ ~ DEPTH ~ 1•1 Compact, olive broY,n, nonstrat11'ed, l,n& lo coarse SAND. i:t'.la silt, traca lino to coarse gravG!. trace asphalt lrag:nents.dry (FILL) 1,', SW·S~ ::: .. 489 7.0·21.5 --,0 Comi:a:I !a c:!snsa, brownish grn~ . noos1rati1isd, llna to coarse SAND. s:ime line lo c:,arse subangular 10 rounded gravel. tr£1ce s ~. dry 10 damp (ALLUVIUM) •• • ••• '1 SW \ II I\ :: :: :::1 34.4 21 5 No ll•cundwater enccuniered Bor\ng comple1ed at 21 5 tt AZIMUlrl: N/A INCLINATION: -90 COORDINATES: not survs ,, SAiv.PLE5 PENE'TAATION RESISTANCE BLOWS/ II. NOTES " ~ " 2' "' '° WATER LEVELS w w BLOWS ~ • ~ i:er 6 in N WATER CONTENT (P!cRCENT) • ~ " GRAPHIC ~ w w z 140 lb Nimmer " w, W, 501flehdrcp ss 4.5.5 10 = 1 5 -~------- ss 5-10·10 20 = 1.5 ss 8-15· 15 ,0 _Q,1_ 1.5 • 55 c;.11-12 " ..!.2. 15 ~1--~--'--------------~-~--~--'--'--'-----'--'--'--'--'--'----'--------, w 1 in to 3 tt LOGGED: C. Allen <I ow~ Gol~--r DRILLING CONTRACTOR: Hol1 Drilling CHECKED: D. Findley W:J: " DRILLER: M. Sharp DATE: 5/27/03 'Associates ~~---------------------------------------------------------J CORD OF BOREHOLE GB-15 SHEET 1 ot 1 PROJECT: HOA/Sunset Interceptor/WA DRILLING METHOD: Hollow Stem Auger DATUM: MSL ELEVATION: 40.89 PROJECT NUMBER; 033-1504.0DO DRILLING DATE: 5/22/03 AZIMUTH: NIA INCLINATION: ·90 LOCATION: Sunset Blvd Renton WA DAILL RIG: Mobile B-59 COORDINATES: not SUNavad 8 SOIL PROFJLE SAMPLES PENETRATION AESJSTA\JCE ffi BLOWS/~• NOTES " ti, " ELEV. ,r t: ,0 20 " 40 WATER LEVELS ~ ~ i§ w w BLOWS < w-~ m 0 DESCRIPTION ~ ~ !: pet 6 in N -WATER CONTENT {PERCENT) z ~ u GRAPHIC ~ 5 0/icPTH :, w w 0 (h) z 140lbhamrur C w, ,, ~ 30 Inch drop -o ~gtl~c:rie i(t\ f- ------~-· ~ -'10.4 Co~:~~em~nn~ -0.5. 0.7 0 _ _J '_: ~ 07 07. 5.1 .,. I Gray. f\lle to coarse SANO am! IL-le to ,.-.,: coarse GRAVEL. cla:np observed in ., CU1!111gs (Fili) ~, •· . ~w-ov,~-i. ., ~.:,,· ,. ' Be,1\onr!~-~ Chips t--5 • 1 inch ~vc_ -,--n-a.o 1 riser Soh, d&rl( brown 10 gray, iron oxide mottled, L .!& SILTY CLAY, tmca l,ne sal"ICI, trace roots. 9 1 ss 0·1-2 ' 1 5 I\ J m"'lc>. 141 I 11v11 iM\ ,-. 6.0. 21.5 · .... ~: Very loose 10 dense, yelloWish brown to brownish gray 10 gray. iriterb11dded. fine to , .. ·, me<lium SAND, trace sill and Hr.a to c:,:iarso •• SAND and r111e lo coarse GRAVEL. trace ~-~ sllt, 1race 1ine sandy silt laminae and line 10 ••••• -'' ,-E coari;e subrounded GRAVEL. s~m.i i1ne 10 , .. -.,. £ coarse sand, trace sill, moist to wa1. ., s {ALLUVIUM! ~,. • i,· .' I.: I· • ~ . .. ,: r10 ., • . I-£ ~, • •. ~ I §, ~--· ' ss 5·14·18 32 _LL -= " •• 1.5 ', -: ~ ... E •I' . -~ .. ' ' ,.-.• i ~ ei I < · ...... ::.-" ~ ~-. ' .-' -. ' ~ Iii., -~ ~ s ,.sp.c . f-1 :: . . ··•· Silica Sano-,. ' I •.. , i:· f-: r15 ~·. • 1 ·.nch PVC_ ~' ,_ ·•· screen · t-.... , ... ·., 3 ss 3.7.,0 " .!& ~ .- " ••• 1.5 -':·-.· -.,. ·:.-· .. ~; ' ' r .•. ,. _. ~·· ·r -~•·. I , ... , .. -·. ·-1.:·· ~·· ; ........ ••••• I_,-~ ,: ·' f-·' ~ •• ·:. f-. §r20 ~-•.. • : ..... I-I I " ,. ' .Ll 0 .. ,: • ss ~0-19·2S .. ~ ., 1.5 "' ~, II'..: . 19,4 ~ "' Boring completed at 21.5 It 21 5 0 ~ ~ ~ ~t- ~ z ~ 0 m -0 ,r 8r---2s w -"' w 1lnto3ft LOGGED: C. Allen <t~es g DRILLING CONTRACTOR: Holt Drilling CHECKED: D. Findley w g DRILLER: M. Sharp DATE: 5/27/03 APPENDIX B Subsurface Exploration Methodology and Boring Logs (Current Study) ASPECT CONSULTING B. Field Exploration Program 8.1. Geotechnical Borings 8.2. Geotechnical borings AB-I and AB-2 were drilled using hollow stem auger drilling methods by Environmental Drilling Inc., of Snohomish Washington under subcontract to Aspect. The locations of the four borings, two performed by Aspect and two performed by Golder Associates, are shown on Figure 2 in the main body of the report. Boring logs of the completed explorations, and a key to the symbols and terms used in the boring logs, are found at the end of this appendix as Figures B-1 through B-3. At selected intervals, disturbed samples were recovered using the Standard Penetration Test (SPT) in general accordance with ASTM Method 01586. This involves driving a 2-inch outside-diameter split-barrel sampler a distance of 18 inches into the soil with a 140-pound hammer free-falling from a distance of 30 inches. The number of blows for each 6-inch interval is recorded and the number of blows required to drive the sampler the final 12 inches is known as the Standard Penetration Resistance ("N") or blow count. The resistance, or N-value, provides a measure of the relative density of granular soils or the relative consistency of cohesive soils. An Aspect geotechnical engineer was present throughout the field exploration program to observe the drilling procedure, assist in sampling, and to prepare descriptive logs of the exploration. Soils were classified in general accordance with ASTM D-2488, Standard l'racticefor Description and Identification of Soils (Visual-Manual Procedure). The summary exploration log represents our interpretation of the contents of the field logs. The stratigraphic contacts shown on the individual summary logs represent the approximate boundaries between soil types: actual transitions may be more gradual. The subsurface conditions depicted are only for the specific date and locations reported, and therefore, are not necessarily representative of other locations and times. Piezometer A standpipe piezometer was instalJed in boring AB-2 for periodic measurement of groundwater levels. The piezometer consists of schedule 40, 2-inch inside diameter (ID) PVC pipe, with a I 0-foot long PVC-screened section. The annular space around the piezometer screen zone was backfilled with Colorado I 0/20 silica sand, above which 3/8- inch bentonite chips were placed to form an annular seal to the ground surface. A concrete surface seal was installed at the ground surface and secured a bolted, watertight, steel, flush-mount surface casing. A schematic diagram of the piezometer installation is shown on the summary log of boring AB-2. The static groundwater level in the piezometer was determined by making groundwater level measurements shortly after piczometer installation. PROJECT NO. 140013 • MAY 28, 2014 FINAL DRAFT A-1 .~ <fJ 0 0 N 0 z C 0 u w C ~ "" w > w iii 0 0 N 0 z " m " ro [L ~ 0 ;', cl, GW GP GM GC SW SP SM SC ML CL OL MH CH OH PT Well-graded gravel and grave! with sand, little to no fines Poorly-graded gravel and gravel with sand, little to no fines Silty gravel and silty gravel with sand Well-graded sand and sand with gravel little to no fines Poorly-graded sand and sand with gravel, little to no fines Silty sand and silty sand with gravel Clayey sand and clayey sand with gravel Silt, sandy silt. gravelly silt, silt with sand or gravel ---------- Clay of low to medium plasticity; silty. sandy, or gravelly clay, lean clay Organic clay or silt of low plast1c1ty ------ Elastic silt, clayey silt, silt with micaceous or d1ato- maceous fine sand or silt ---------, Clay of high plasticity. sandy or gravelly clay, fai clay with sand or gravel Organic clay or silt of medium to high plast1c1ty Peat. muck and other highly organic soils Terms Describing Relative Density and Consistency Conrse- Grnmed Soiis Density Very Loose Loose Medium Dense Dense Very Dense SPTi.21 blows/foot o to 4 4 to 10 10 to 30 3010 5:J >50 Test Symbols FC C M Fines Content Gra,n Size Moisture Content A Atterberg Limits Fine- Consistency Very Sott Soft SPT "blows/foot Oto2 2to4 C -Consolidation DD Dry Density K = Permeability St, St1ear Strer1~lh Grained Soils Medium St111 Strff Very Stitt Hard 4 to8 8 to 15 15 to30 >30 Env Environmental P1D Photo1onizat1on Detector Descriptive Term Boulders Component Definitions Size Range and Sieve Number Larger than 12' Cobbles Gravel Coarse Gravel Fine Gravel Sand Coarse Sar1d Med1urn Sand Fine Sand Silt and Clay 3' to 12" 3" to No 4 (4. 75 mm) 3" to 3/4' 3/4'' to No 4 (4. 75 mm) No 4 (4 75 mm) to No 200 (0.075 mm) No 4 (4 75 mm) to No 10 (2.00 mrn) No 10 (2 00 mm} to No 40 (0 425 mm) No 40 (0 425 mm) to No 200 (0 075 mm) Smaller than No 200 (0 075 mm) rn Estimated Percentage Moisture Content Dry -Absence of moisture dusty. dry to the touch Percentage by Weight 5 lo 15 15 to 30 20 to 49 Sampler Type 2.0"0D Split-Spoon Snmpler (SPT] Bulk sample Grab Sample lrace Slightly (sar1dy s1!ty dnyey. gravelly) Sandy. silty, clayey gravelly) Very (sandy. silty clayey. gravelly) Symbols Blows/6' or portion of 6' I • • • Sampler Type Description Cont1nu0Js Push Non-Standard Sampler 3.0" 00 Thin.Wall Tube Sampler • (1nclud1ng Shelby tube) 0 Portion not recovered 111 Percentage by dry weight (?\ ($PT) Standard Penetration Test (ASTM D~ 1586) Sl1~Jhlly Moist -Percepl1l.Jle moisture Moist -Damp buL no v1s1ble wate1 Very Moist -Water visible but not free dra1rnng Wet -Visible ireH water. usually from below waler table Grouted Tr3ns::luccr "' Cemert ;rrou: s·.Jrf3.ce sesl Be1tc1111e chios Grm_;• seal F1lte, oack with t-lank ccs,.-g sect1rm Screenec cas111g or hydrot1p w,th filter pack ,:51 Combined uses symbols used for fines between 5% and 15% as estimated 1n General Accordance •'.3J In General Accordance with with Standard Practice for Standard Practice for Description Descrrpllon and ldent1ticat1on ot and ldent1f1cat1on oi Soils (ASTM 0-2488) Soils (ASTM 0-2488) 1-1; Depth of groundwate1 'SJ._ ATD Al t1r11e o! drilling BGS -below ground ~ Static water level (date) surtace -,, ro u Classifications of soils m this report are based on visual field and/or laboratory observations, which include density/consistency, moisture condition. grain size, and c: plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein Visual-manual and/or laboratory classification ~ methOds of ASTM D-2487 and 0-2488 were used as an identification guide for the Unified Sotl Classification System. Y, 1-------------,.-----------------------------------...,,,...----,r-·P·R·.o·J·E~C·T•N•O--t ! Exploration Log Key B-1 C 140013 0 f------+--F-,G·u-.P·E-N·o---t ~ ~I c_ ________ ..... __________________________ .._ ___ ..,_ ____ _,cj Project Number 140013 Project Name: Central Renton Sewer Interceptor Upsize Location: Renton, WA Driller/Equipment: Environmental Drilling Inc. / HSA Drilling Method/Hammer:SPT/140 lb Autohammer Depth/ Elevation (feet) 50 5 45 10 40 '° 15 < " ~ w N ~ ~ ~ ~ w u ~ w ~ ~ ~ w z ~ ~ 35 Borehc,je Completion backt1lled with soil Oto a 5· bgs Backfilled with bentonite chips O 5' to 7 5· bgs g \11---~S-aJm_p_le_r_TJy-pe: ii l::tl lJ No Recovery G • Standard Penetration Test 5 r_ (ASTM 01586) Sample T~pe/10 S-1 (0,1 5 ~ ') S-213-45 ft Tests GSA Blows/ 5· 6 5 5 6 9 8 5 5 7 N-value A Water Con1ent % • a 10 20 Jo 40 • • I • I I I I I I I I Drilling Method· HSA: Hollow Stem Auger MR: Mud Rotary Material Type Ground Surface Elev Sheet 1 of 1 52.1 Depth to Water (ft B~G=S~) __ N~ot~e~n~c~o~un~t~e~re~d __ _ Start/Finish Date 3/20/2014 Description Surface condition is gravel. Loose to medium dense. moist brown to olive brown, slightly silty to silty, sandy to very sandy, GRAVEL (GP-GM); fine to coarse gravel, fine to coarse sand. (TRENCH BACKFILL) Bottom of boring at 7 .5 ft. bgs. Groundwater not encountered. Borehole was backfilled with bentonite chips. Logged by: EA Approved by: EA Depth (ft) 5 10 · 15 ~ .... ____________________________________ _:f..:i9a:"e:'o:•.:.N:.,O:;.._,:B:;.-..:2:_ ______ ....J. ,~~~~'~! ·ing Log ·-Project Number I Boring Number I sh-eEit ___ 140013 ' AB-2 1 of 2 I Project Name: Central Renton Sewer Interceptor Upsize Ground Surface Elev 53.3 --- Location: Renton, WA Driller/Equipment· Environmental Drilling lnc. / HSA Depth to Water (ft SGS) - Drilling Method/Hammer:SPT/140 lb Autohammer StarVFinlsh Date 3/20/2014 Depth/ Sample Tests Blows/ N-va!ue ... Matenal Depth Elevation Borehole Completion Water Content % e Descnpt!On (feet) Type/ID 6' 0 10 20 30 40 5 Type '"' ' 1 0-1n flush mount Surface condition is grave! ' monument thermos I i I Medium dense, moist. brown, silty, gravelly I cap concreie surface SAND (SM) seal (0-1 ft) Ii I I (FILL) I 11 i:: 17 ! 50 11 j ' ' 3/8~n hydrated -I . '' ber.to111te ch•ps ( 1-16 I j, i rti I j I 5· 4 I 5 ! 5 : 'i' GSA •+ S-2 ,,5-<i C ft B i 'I I i Ii 1 . I ! 'I! ' ! a I I ' • ---- S-l,f7S-8, 27 I Ii 2-:n diameter PVC 11 I '5 blank (0-15 tl) 5 • "' ! ! S 3b(8 911 ! I I, t i ' I • i .i I • >-1, i ·n -Loose. moist. brown, very silty. sandy. GRAVEL 10-' - ··--:1 J/1 · (GM); 10 4 1 it·:.·: GSA 3 I ---S <1ic •, ,'1 5 '. -:t 1:: ', . '1, c ', ;l ;1,i' 1 I-~ n.::·; I -------- ' l 5 I J ' I 5 ~ -'r ·, 40 ~ s' ,, s '"' 8 )f V l I 1-:--t I i ' f ' I , I ' ' • , -t ,...!. 0 I ,_, _____ ' Medium dense, moist, mottled brown and gray N I ' ,,; 15 " brown, slighty silty. gravelly SANO (SP-SM); -15 § 5 I ii trace roots, fine to medium sand, fine gravel < 6 I ':' ii ~-, ·" '"" 11 • ... (ALLUVIUM) " . 10120 s111ca sand filter w packi.16-315ft) N / . '. in C 0 1,--....J.-l.-, r--------------------" 0 : Very loose, moist to wet, clean to slightly silty. c sandy. GRAVEL (GW); fine to coarse gravel, C , I w 6 0 medium to coarse sand " 1 ~ I ,, ;-w c 35 ~--,,,,_.,,, 1 • ' -' ' ' ' ', w ~ ' '-"""" 3t2C·.'~C1,! ' z ' '' 0 2-in i:!1ameter PVC ' ' Wet at 19 ft. bgs ~ " pre-packed 1 O slot ', ' 0 -screen [19 5-29 5 ti) ' ~ - " Sampler Type· Logged by· EA z Drilling Me1hod: ii' 0 LJ No Recovery m HSA: Hollow Stem Auger I r Standard Penetration Test Approved by· EA 0 w (ASTM D1586) MR: Mud Rotary c 0 w F1aure No B-3 " Projecl Number 140013 Project Name: Central Renton Sewer Interceptor Upsize Location: Renton, WA Driller/Equipment· Environmental Drilling Inc. / HSA Drilling Method/Hammer:SPT/140 lb Autohammer Depth/ Ele>"ation {feet) . . 25 30- ~ 35 '& < ~ + - 30 25 20 15 ~ c- [; ~ ~-_I ~ -< ~ -'------, c-= -· ~ :::. -r=i •J -· Sample Tests Borehole Completion Type/ID ' GSA ~ '""·" ·~ t'f 4/7/2014 --. 10120 silica sa11d filter pack(16-315ft) 2-in diameter PVC 10 slot scree11 (19 5 29.5 "' S·9<15·16S ft ---- S10iJO-l1S•• 3,--~~--~------~~--~--~ ··-- " ~ I u w b w Sampler Type· l] No Recovery ~ Standard Penetration Test (ASTM D1586) Blows/ N-value ... Water Content % • ff 0 10 20 30 40 5 6 ~. 4 5 I I \ I I I \ I I I . ,, 9 I 18 'i 30 ' ( I I I I I I I I II ',, 7 22 5014 • 50+ J Drilling Method: HSA: Hollow Stem Auger MR: Mud Rotary I Matenal Type c ... <: . . .. ·. . . I • <: : :,: :: :- .. B IQ LO!! Boring Number AB-2 Ground Surface Elev I Sheet 2 of 2 53.3 Depth to Water (ft B:.:GccS:J)'--------- Start/Finish Date 312012014 Depth Descnp1ian (ft) Loose, wet, brown, clean to slightly silty, very gravelly SAND (SW), fine to coarse gravel, fine to coarse sand C Very dense, we!, gray, clean to slightly silty, very gravelly SAND (SW): fine to coarse sand L (ADVANCE OUlWASH) 25 - 30 L Bottom of Boring at 31.5 ft. bgs. Monitoring well L installed. Groundwater encountered al 19 ft. bgs during drilling. Groundwater level measured at 21.2 ft. bgs on April 7, 2014. 35 - Logged by: EA Approved by: EA ~L-----------------------------------------""===-_;:;.....;;..._ _______ ., Fiaure No. B-3 APPENDIX C Geotechnical Laboratory Testing Results (Current Study) ASPECT CONSULTING C. Geotechnical Laboratory Testing Laboratory tests were conducted on selected soil samples to characterize certain engineering (physical) properties of the soils within the Study Area. Laboratory testing included detennination of grain-size distribution and natural moisture content. The laboratory tests were conducted in general accordance with appropriate ASTM test methods. Test procedures are discussed below. The grain size distribution of selected samples was analyzed in general accordance with ASTM D-422, Standard Test Method/or Particle-Size Analysis of Soils. Results of the grain size distribution testing are presented in this appendix. The moisture content of selected samples was analyzed in general accordance with ASTM D-2216, Standard Tes/ Methods for Laboratory Determination of Water (Moisture) Content ()(Soil and Rock by Mass. Moisture content test results are plotted on the boring logs at the appropriate intervals. PROJECT NO. 140013 • MAY 28. 2014 FINAL DRAFT B-1 ' !Vlaterials T'esting & ('onsulting, Inc. Cienkch111eal Enginecnng • Special Inspection • ;\latenals Te,ting • Frn1rorunental (on;ultmg Project: Central Renton St'11er Interceptor P.-oject #: t..\R058 Client: A,;pect Consult1111 Source: ,\~I S-3. 6-7 5 SamnleU: B14-1406 'l'u,tl,:il1or1' :-:o Specs Samplt :i.lctCs Sptc5? \oual Interpolated Sie\'e Size rs Metric l~ ()ff' JO 00" 8 00'' /, ()(J' .i 00' J 00' '.'. 5U" 2 00" I 7s.·• I 'iO'' I'.'.'" 1 oo·· >i-+" 5;8'' 1 '2" >iR" #100 #l,10 "170 e'.'.00 l()(l{II) '.'.'ill 00 21)0 00 1<.0illl IUO 00 75 00 6\ uo 5~ 00 ,15 00 l7 'i(l 31 50 25 00 l'J ()() 16 IJO 12 50 'J'ilJ 6 30 4 75 2 i(, ::: on !IS 0 8'iO 0 (>00 () 4:'' U 300 0 2.iO 0 IR(I () ] 'ii) 0 ]Oo {l(l()/J 0 07~ ( um11l.,1i,,· Cumulati,e l',·1,·,·11! 1'.1,11n~ Rll'o 4--l"o 7--1", l'ercenl Passine IOO'o IOU', 100°, 100", IOU', ]00°, 1011"0 ]IJ1l"o ](11)', ]00'o 11}0", 100°, 8(1'" 7.1°, 66°, 60~, 5-4"--o 52~, "''" 11°, lo~, 11°, 12°, ll'o liJ'., 8', 7 .j", \11,.,"lt' ,,,,,1,,,.,l·.t,·••'"• ,.,.,,,,,,, "'J ,.,.,ul-1."-'" ,, ,,.,,,,,~1,..s-t,."'"''' 1,,,.,-tl..•,.,1,1. Commi:nts: Sieve Report Date ReceiHd: 20-;\1ar-l4 S:rn1pled By: Clit'nt D3te Tested: 2..\-),,1.ir-l..\ Tested By: C l\!ercdith \~i"I \1 ll-!..\S~ I nitlc·d ',,,ii, ( Li,,inc:11i1111 ,,~1,·111 CiP-Ci:0.1. Poorly graded llra\'el 111th Silt and Sand ":unpk ( .. 10,·: Hnmn ASTM D-2216,ASTM 1)..2419,ASTM D-4318, ASTM D-5821 I.I ()[]_';] ,, 0 14<J " ll .>74 " I (142. " 4 1~8 " 9 560 " 2.1%2. ASTJ\1 C-136,ASTM 1).6913 Specs Specs Mai l\li11 100 0°·, 0 0°·, 100 0°-0 0 0°-, 101) 0°, 0 I)~, 100 00, 0 0°, 100 0°, 0 O"o 100 0°-, 0 I)', 100 O'o o o~. 1000', IJ 0", IOO O'., 0 O", 100 0°, 0 0°, 100 0°, n 0°, 100 0°, [)()", 100 0°, 0 0°, IOol 0°0 0 O'o 100 0°, IJIJ'-, 100 0°, 0 0°, 100 O'o o o•. IOU O"o 00°, 1()0 0°, 0 0°, JO<> O"o 0 O'o 100 O', 0 0°, 100 O'o () 0~, IOU 0°, I)()", 100 O'o 0 O", 100 O'o 0 0°., I OU O~o () (l~·o 100 0°, 00% 100 00, 0 0°, 100 O", o 0°, 100 0°, 0 0°, IOP 0°, 0 0°, mm mm mm mm mm mnt I' :., I .II lk,:'J ', • I I ,1,, . -::c Corporate-777 Chr;,,lei Dme • Bur!mgton. \~A 9!(;33 • Phone (360) 755-19')1) • Fax (360) 755-1980 NW Region -80~ Dupont Street. Suite 5 • Bellingham. W:\ 98125 • Phone (3601 M7-6061 • ~ax (360) 6..\7-8111 SW Rl'~ion -2118 Black Lake Bhd S\\ • Olympia. W.-\ 98512 • Phone (360] 53-1-9777 • Fax {360) 534-9779 Kitsap Rl.'"~ion -'i-1.51 NW :'\e"be1T) Hill Road. Suite JUI • Stht·rdalc. \\ ,cl, 98383 • l'ho11c (3601698-6787 • Fax 1360) 691-l'll'l \'1s1t our v.chs1te: \V\'i\\ mtc-mc ne ,:('· I'.,, l1·c1'. " 1,, 0 76 64 20 4 8~ r.'a ,, Materials Testing & ('onsulting, lnc. Ueoh:chmcal Engineering • Special ln~pecho11 • Materials Te~tmg • I'n1·ironmentnl Consulting Project: Cen1ial Rentun Se\l.er lnlen:eplor Projcrt #: 14B058 Client: A:;peet Con~ultmg Source: AB2 S-2. 5 -6 5 Sam·le#: B\4-1407 Sieve Report Date Recei1·ed: 20-:\lar-l·I Sampled B,·: Chen! Date Tested: 24-Mai-l-l Te5ted By: C. :-Oderedith \SI \I ll-248"7 I nific,d Soils ('l,l',iili(ation S~st,·rn Sf\!. Sihy Sand ""ith Gmcl ';:impk( olnr: Brown Grey ASTMD-1216,ASfM D-2419 ASTM D-4318,ASnf.D-5821 I> 0 01S mm ",(l:.t\d 27 ~··· C,·d( ,,ff 1. O'J') ~P<'CtflCH!l<lll' :-.:o Spe~, Sit•t Size (;S Mtlrir 12 00" 300 00 1000" 25000 8 00" 200 00 600" 15000 --1 oo·· 10000 3 00" 75 00 2 50" 63 00 2 ()(I" '.'iD 00 l 75" 45 00 I 50" 37 50 l 25" 31 50 l 00" 25 00 l.'--1'" l'J 00 5.-'8' 16 00 lil" I 2 50 J.'8" 9 50 114" 6)0 '4 .p, "' 2 Jt, It 10 2 00 /:lb "" /120 0 850 #Hl fl 600 '40 0 --125 11'0 0 300 #60 0 250 ''° 0 180 #100 0 150 #14{1 0 106 #l 70 0 090 #200 0 075 \rrn:,I ( ,1111nl,llh,' l'nn·111 9:l', BS% s,•.; 73', 64°-, 50', 37', lnltrpolalrd Cumulati,·f Prrcen1 Spec, l'as5inn . Mu. 100% 100 o~. IOW·, 100 o~-. 100~-. 1 00 0~ o 100°, 100 O',, l()O•·o 100 o•-;, 100~-. l{IIJ0% 100•. 100 o~. 100~. 100 o•, 100~. 1000% 100°--, 100 O'-• I00'-0 100 o•.·, 100', lllO O'·, 'l3~. 100 o•. 89~-. 100 I)'., 85~-. 100 Q';, 83% 100 O", 7b', 100 o•., 73'·, 100 0% 65~. 100 o•-. 6--1', 100 o~. '4', 100 O"o 51)'., 100 o•-, --12', 100 o~. 37•,, too o•.-; J2~' 100 o~-. 30'.-, 100 o~. 27'-, too o~~ 26% 100 o~---. 23•;, 1000% 22'·• \00 0% 20 5°-o 100 O~•, I> 0 0]7 " " 0 249 I>. 0 887 I> I 695 I> 16 77! ASTM C-136, ASTM 049U Sp,cs Min o o~. o o•-, 0 ll'-, o o•,, o o•-, o o•,, 0 0°, 0 fl', 0 O', o o•o 0 0% o o•. I o o~. 0 O', 0 O"o 0 O'·, () O', 0 0°, 0 0°, o o~. o o~. 0 ()"; o o~ .• oo•,; o o~-. 0 O'·, o o•; oo•·, 00% o o•; 0 O~-, mm mm mm mm mm mm :, ~-' 51 )', {;::",:l,,' 4624 ', ',,(: ,\ ( I.I 20 5'o ! ;., ,,-,, \] 3 33 I ,r n'a I': ,,r., I '" n/a I'. ,t,.1 -. Ir,,!, .. , nia \f.1 ,1,.c,· ·, .,, ,.11 ,:,l,J 9 I', ,, i h;, , ,,1,."1 n/a l!.q'd :0,c. .d I ,:c", .tk;·,1 ~ ,_,_ ........ t .. ~s.c;A;:., is. z.;1;.,ut~, . '", l•,I I,, I Ir I llrlr r r,I' rt r I "''''I• , , , r' • ' ,, '\; ' -\., '" ,\~" ' "' "'' " -:~:f\ '. ,-.-, I \··· -, r, · r --,,;, -T "' ,,,1 ·~· \ ,\ \ '.!. , __ ... '._ _, _ ..l'..! 'S I :o.·,1...-,e,- '\ "'· ",".' -··· I __ ,,,,,,.. ~"""'_., ,,.,.<> ,,,,..-.~mi& l ,hni,-" ~"""' r, 1•,•,,, •. ,. ~I'""" 'F'I'" ,h ,. -" "~ ,.~~,. ,,_. <,.)m,e,r,~"""J I,, m1Cu,I "'"'""""' d,-,,. th, p,h,,-,.,J ""·"· ~I ,,r, ,rt,~. ,,a.,,,n.; ~th..,~~,, . ..,,,~ !"''r'"'" ! .,, • .,,., """ ,ut!,wv"'''" 1 ""'"'"~''" I'"''"''""' . "·'"' "'" "'_,.,,.,.,.It •m ·" ,_,,.,,J,,,i "'~·•!'"''" '""'"', ,.,J,.,,," """·" '!'!"'">I C'ommf'nts: J .t. RE"vif'wed by: --------------------------- Curpurate-777 lhrysler Drive • Burlington. WA 98233 • Phone (360) 755-1990 • Fa'\ (360) 75'.i-1980 :\'W Region -805 Dupont Street. Suite 5 • Bellingham. WA 98225 • Phone (360) 647-6tl61 • fax (360)647-8111 SW Region -2118 Black Lake !11\,d S.W • Olymp1a. \vA. 98512 • Phone{160) 53--1-9777 • fax (360) 53.J.-9779 Kit,ap Region -5451 NW NewheIT)· Hill Road. Suite 101 • S.iherdale. WA 98383 • Phone f360) 698-671:P • Fax (]60) 692-!919 \'1,it our website .,,,v,w mtc-inc ne Materials 1-csting & ('onsulting, Inc. ~ ..... Geotechmc:al Engineering • Special !nspectton • il.t~tenal., Te,tmg • Ennro11menlal Cc>nsulting Projecl: Central Renton \e1~er lntcrcepto1 Projet:t II: l--lBU58 Client: ..\5pec1 Con;ulting Source: AB2 S---l_ Ill -11; Samnlc#: Bl--l-l--l08 "1a·r,tl, :,1.,,11, "\o Spec~ \elu:i\ Tnte~pulatnl ( ,.,,,,,1:,1i,,· ('umula1i,f SitH Siu US Metric 12 on· ,110 oo 10 00' ~)0 00 :s oo" ~on oo (:, OIi' I ,;fl 00 ·I 00' 100 00 300' 7'00 250' 6l00 2 00' 50 00 17~" 4~00 l ~()" 17 ~() l ~5" J l 50 100' 2~00 .i.'-4" l•)()IJ 5,8" 1/J 00 1/2" 12 50 _,;!(" ') 50 I 'I" 6 30 '" ~1r, ,111, ~'.'.IJ ~30 2 _;t, ~ 00 "" I) 8'0 0 60(J 0 42" II .iUO 0 2~() 0 I RO 01,11 0 106 0 ()~() o 07~ !'er,,·,11 Pa-sic,~ 52', ... ,, ........ , .. , ....... ,,."'•·'"'''''' '""'""'" "'" L, ,.,,.al!,,,h a m,J,,.,0-,,a.,1,~•"j \, ''"'"""''""'·•''""' ' Comments: Perctnt P~),ing WO', )()0', 100', WO', 100•, 100', 100', IOO'o 100', lllO"o 100°, IOO', 48°, 46°, 42", 4 1•, l'J', _]()', 34 3', Sieve Report Dale Rccched: 2U-~1m-l l Sam1Jlcd B~: Clicnl Dale Tested: 2-l-:>.1m-l-l Tested B~: C :--.k1cd11h \" I \l ll•!-IS" { nili\'(f ..,,,ii, { 1.,,,ir,~:ili11n ... l>IL'IP Gl\1. Silty Gravel 11i1h Sand '-atrnl'k ( oln,: ['lrown Gre1 ASTM D-2216,ASTM D-2419,ASTM D-4318, ASTM D-5821 " 0 0\ \ " (J 1122 " o o:;J ,, 0 066 " 072--l ,, J 0:24 ,, 18 JJ5 ASTM C-136, ASTM D-6913 Sprrs Specs Mn l\li11 IUO 0°0 ()(f'io 100 O'o 0 0°0 100 O'o o ri0 , IO•J Li0 o UO", 100 0', 0 O', 100 o•, 0 0', l (J() ()~ • 00", 100 o•, 0 0°, \00 0', 0 0°, 10011', 011', IOU 0°, 0 O'o 100 o•, o o•. IUO ll'O 0 II~ , 100 o•., 0 0°, trlO o•, o o·~ l(){)I)"., 110•. 100 O'o 0 0°, 100 0°c o o•, 100 U'o 0 O"o 100 O", rJ 0°0 lllll(l"o IIO"o 100 O"o 00°0 100 O", 0 0°, 10(} O"o 0 O"o 100 Cf,, 0 0°, 100 00., 0 0°,. 100 I)", o 0°, 100 0°, o o~. 100 0~, 0 0°, 10n O', 0 0', 100 0°, 0 I)', .1'«0""'~' "'"'"'·"~'"'"""'°",. mm mm mm mm mm •· r i .1 ii \ ,· .. · ·: 36 ~". ~() -,,, '; ,\ I H:l', · I ,.,. · 11:1 ,·, I .,, , n-'a H.cc J ', ·,JI c:L , ,'1,1 . . ('orpornte-777 Chrysler Dri,e • Burlington W-\ 98~33 • Phone !360) 755-1990 • Fa.x (~601755-1980 'I\\' Region -805 Dupont Street. Smtc 5 • Bellingham. W.-\ 982~5 • Phone 1360) 647-6061 • Fa, (360) 6..\7-8111 SW Region -2118 Black Lah Bkd S\\ • Olympia.\\'.-\ 98512 • Phom: (360153-1--9777 • Fn (360153~-9779 . Kitsap Region -5451 '\W '\e\\-berl)' Hill Road Smte IOI • Silverdale. W\ 9838:; • Phone (3601 698-6787 • Fax 1360) 692-19!9 Visl! our v.cb-;1tc: ,~1v,1 rntc-itK ne ,·(; "\. ··. •···. 0 07 l )8 15 131 '" 10 ~·. ' ' Materials Testing & Consulting, Inc. Gcoteclmical Engineering • Special Inspection • t\[aterials Testing • £nvironmen1al Consulting Project: Cential Renton Sewer lnte1ceptor Project#: 14B058 Client: Aspect Consulting Source: AB2 S-8. 20-21.5 Samnle#: B14-1409 Sieve Report Dale ReceiHil: 20-I\lar-l..J Sampled B}·: Client Date Tested: 24-:\ 1ar-1 ~ Testetl By: C Meredith \S-1 ,1 ll-2487 l nili,·1! Soil~ ( 'la,sifi,ati••n S) ,t,·m sr. Poorly graded Sand "ith Gmd Sam pl,• ( oh!!": Brown Gre} ASTM D-2216, ASTl\1 0..241!1, ASTM D-4318. ASTM D-5821 ,, 0 130 mm 'o (;r,n cl 42 3~o n 0 27~ 111111 , "·'"" 53 'l 0 o 0 70 1961 ~j)<'~ifi(',lliU!l' t',;o Specs n 0 4! 1 mm \, ~.I: ,I.. \"I.,·, 3 8'o ,., ,. \l,·J,s'• 4 66 Sample l\leets Specs ? Vt1,:ol lnterpolatNI r·u,11uL,1i, ~ l"umulatin Sitn Siu l',·rr,·n1 Ptrcf"nl l'S J\Jf"tric l',l',,ill~ Paisine 12 00" JOO 00 100°,o 10 00" 2'i0 00 100•.:, 8 00" 200 00 100", 6 00" 150 00 100"."o 4 oo· 100 00 IOO"·o 3 00" 75 00 100°,, 2 ~O" 6> 00 \()()~ .. 2 (1()" 'iO 00 IOO~, l 75"' 45 00 100°,, I 50" 37 50 100•,. l'.!.5"' 31 50 100°, l 00" 25 00 100', 3,4· 19 00 BS', 88~·· 518" 16 00 84°, li2" \2 'ill 7H'·, 78% 3/8' 9 50 75°, 75~ ... 114" 6 JO 63°,o 1¢4 .j 7) 'i8', S8'·o ,, 236 -14''• ~10 2 00 42°·, 42'·0 '" IIS :;2~. #20 0 850 28', 28% ~30 0 f,()() 21•. ~40 0 425 16°0 16°,o .so 0 JOO 11% µ(,() ll 2~0 9% ,so 0 180 7~ .• #100 0 150 , •.. 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' _' _, __ ., ..l '~ L '-_, U _. L _ -\-' _ '---' _ 1-'' LI L '_, _ J' LI l ' \ .,., . ,.:\ -1\; ' :···~-:' ------------------------------------------------ Reviewf"d hy: Corporate-7i7Cluysle1 Dmc • Burlmg1011. WA98233 • Phonc(360)755-1990 • Fa:,.(360)755-1980 NW Region -805 Dupont Street. Suite 5 • Bellingham. WA 91:1225 • Phone t360) 647-6061 • Fax t360) 647-8111 S\\ Region -2118 Blad, Lake Blvd. SW , Olympia. WA 98512 , Phone (360) ~34-9777 , Fa.:,;:1360) 5H-'1779 Kitsap Region -5,151 NW Newbcny Hill Road. Suite \UI • S1lverda\c. W.A 98383 • !'hone (360) 698-6787 • Fa:,;:{360) 692-1919 \-'1si1 ot1r \.\-ebsite wwv.· mtc-inc ne Materials -resting & C'onsulting, Inc. Cieuleduucal Engrnecring • Special lnspcc\lon • Ma1c11als Testing • En~ir,)11111ental Con.,ulting l'rojl.'t:I: Central Renton Sc\1cr ]nten:eplm Project#; 0104_B_o_,_,~==-------------- Datt' Rcct'ind: _M_,_,_,_,,_,_oc. -"-'-1'--------------- Date Tcsted: March21.20!.J Sam11led by:-'-·'-"-"-'--------------- Tested by: C. l'vkrcd1th Sample;: nl'-1-1, ttt+ ' ,,,,. ' '" ,. ' ""· ' Kl.:1-J, Hl4-,.,,,, Re\"lewed by Moisture Content -ASTM C-566, ASTM D-2216 & AASHTO T-265 Location Tare Wet -Tare Dry -Tare Wg1 OfJl.!01st11re \VL!.1 Of 5011 i I :,,-J \J -! ) ,, L " ,_ +LL ,, I l :,,-J ·' -'I ) ' ' ' '"' "·' " rn :'1-1 /_.) -'I a' ' , .. !., I •. ,.0 11/L I :'.'1-JA /)-/'i\L;ppcru 1 ' ' ', l) ) '"' ' ,. /) -';I 1--'.<i U ·-. ' ·') ,., JL.) -j '1-00" " "' "" l) -l t ' ·'"' -'"'-'JI _,v_l /'i !..!.'! ""' " J /.) " '' ' I D.U .. _,_!. L). --' "" I )v1 ·t /) ·' .t '. tJ jtJ. " ' '"· ti .. _,,-b '""' ' '"' b:\/_<( ,· Corporate Tn ChryslerDnw • Burlm[!ton. WA 982:13 • Phone 060) 755-1990 • Fax\3601755-1980 NWRegion-805DupontStn:-ct.Smtc5 • Bellingham.WA.98225 • Phone1360)(d7-6061 • Fa'\(360)6-17-8111 SW Rl'gion 11 ! 8 Bla.:k LaJ..t: Bh<l • Olympia. WA 9R512 • Plume (360) S:\4-'r-77 • Fa, (360) 534-9779 Kil~ap Re~inn -5451 NW Ne\1beny Hill Road Suite IOI • Sthenlale. WA 9838.\ • l'hone (360) 098-6787 • Fa:-..(360) 692-1919 Visit our website· www.mtc-mc net "·o Moisture 1.0~-o 'I !.~·o ! "·o o (J",0 ) o~-o IL. J"•o ... J ,.u·:-o '!.l"'o ' 0 " l ' "' "' "' 0 r'- "' 0.. s s INDEX OF DRAWINGS SHEET DWG NO. NO. ~ G-1 2 G-2 3 G-3 CIVIL C·1 c.2 c.3 DRAWING TITLE COVER. VICINITY MAP & INDEX OF DRAWINGS NOTES & GENERAL CONSTRUCTION SEQUENCE LEGEND. ABBREVIATIONS. SYMBOLS & OESIGNAl IONS SEWER UPSIZE PLAN & PROFILE MISCELLANEOUS SEWER OET AILS SEWl::R RELINE PLAN & 01::l AILS CITY OF RENTON 0 .2.m + .·~~y C?~ ·~~ ~~) Preliminary 90°/o Review Set Not For Construction 06-2014 CENTRAL RENTON SEWER INTERCEPTOR RELINE & UPSIZE PROJECT PROJECT NO. WWP-27-03712 JUNE 2014 VICINITY MAP ,~-, -,,-I ---_;; : --·-- . I , -' ", -' J,___.. ,--~ 'I ',I\~ ' . ' L••• i, \ • .J ; v·,,,, •, "''1 ••. s ll --' ~ ' i ~ W<t>llrng!M \ 1 ..,__. , ~ ,~· ·~-"" ...... ,.,. -!f,-I, '·~ _\;;: _J: - ,.,_,. ' -_1\~ e.,.,o \!Lr crpal i,_ ,..,,,., "' , , ~ ,, ' • , l 'I ' I: l' j 1' -L._. ~E'!hSI r -, l j ' ~- g t"'."""1- , ~ ! I CONTACT PERSONNEL JOHN HOBSON PROJECT MANAGER (425) 430-7279 DAVE CHRISTENSEN WASTEWATER UTILITY MANAGER (425) 430-7212 CITY OF RENTON 1055 SOUTH GRADY WAY RENTON, WA 98057 PREPARED BY :l•re-: cmtsl~ BHC Consultants, LLC 16C1 F,t:r AV<'n"~ 5urte 500 S~a111~ V'ia~·.,.091no gs 10 I 206 506 3~CO 206 S05 3406 ,t.;x, w"'"' oOcccnsul\ants com IN ASSOCIATION WITH Survey -KPG \-)_ \: ( r:: \ '\ L. --, • \_,. > ' -T• JUl l 'i i K?G -· •J.'A T. Wl-lk~OUS£ P £ P SIMON -·" J. Ke!~SHEL P ~ ., ,., ""'' ~""'""""" ND. REVISION BY \ OATE ! APPR I -.-="""·--· ,.,..;:,:,-:;";,':J!,.,, ~ CITY OF ® RENTON I Publi~ Works o.,p\ cnv {)f ~--\: '?\_ A.ht-:,;-.!' CENTRAL RENTON SEWER INTERCEPTOR RELINE & UPSIZE PROJECT COVER. VICINITY MAP & INDEX OF DRAWINGS I JUNE 2014 I G-1 N " "' 0 "-N (l_ ~ ~ '·!, ,, !~ GENERAL NOTES ALL WORK AND WORK MATERIAL SHALL BE IN CONFORMANCE WITH THE STANDARDS ANO SPECIFICATIONS OF THE CITY OF RENTON PUBLIC WORKS DEPARTMENT ANO THE LATEST EDITION OF THE vVSDOT1APWA STANDARDS AND SPECIFICATIONS, AS APPROVED AND MODIFIED BY THE CITY OF RENTON IN THE RENTON STANDARD PLANS & SPECIFICATIONS. A SET OF APPROVED PLANS SHALL BE KEPT ON SITE AT ALL TIMES DURING CONSTRUCTION 2. THE HOURS OF WORK IN THE STREET RIGHT OF WAY SHALL BE PER CITY SPECIFICATIONS ON WEEKDAYS UNLESS OTHERWISE APPROVED IN WRITING BY THE PLANNINGiBUILDINGiPUBLIC WORKS DEPARTMENT. AN APPROVED TRAFFIC CONTROL PLAN MUST BE OBTAINED PRIOR TO BEGINNING ANY WORK WITHIN PUBLIC RIGHT OF WAY. 3 THE CITY OF RENTON AND BHC CONSULTANTS LLC ASSUME NO RESPONSIBILITY FOR EXISTING UTILITY LOCATIONS AND ELEVATIONS. ALL LOCATIONS OF EXISTING UTILITIES SHOWN ARE APPROXIMATE AND IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO VERIFY THE TRUE AND CORRECT LOCATION AND ELEVATION SO AS TO AVOID DAMAGE OR DISTURBANCE PRIOR TO COMMENCEMENT OF ANY CONSTRUCTION 4 A PRE-CONSTRUCTION CONFERENCE (PROVIDE MIN 7 DAY NOTICE) ANO A 24 HOUR NOTICE SHALL BE REQUIRED PRIOR TO STARTING NEW CONSTRUCTION IT SHALL Bl: THE CONTRACTOR'S RESPONSIBILITY TO SECURE ALL NECESSARY PERMITS PRIOR TO STARTING CONSTRUCTION. (CONSTRUCTION OBSERVATION WILL BE ACCOMPLISHED BY A REPRESENTATIVE OF THE CITY OF RENTON.) IT SHALL BE THE CONTRACTOR'S RESPONSIBILITY TO NOTIFY THE PUBLIC WORKS INSPECTOR 24 HOURS IN ADVANCE OF BACKFILLING ALL CONSTRUCTION 5 CONTRACTOR IS SOLELY RESPONSIBLE FOR THE MEANS. METHODS AND SEQUENCES OF CONSTRUCTION AND FOR THE SAFETY OF WORKERS ANO OTHERS ON THE CONSTRUCTION SITE 6 IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO OBTAIN STREET USE AND ANY OTHER RELATED PERMITS PRIOR TO ANY CONSTRUCTION 7 PLANS APPROVED BY THE CITY OF RENTON, PUBLIC WORKS DEPARTMENT SHALL TAKE PRECEDENCE OVER All OTHER PLANS 8. A COPY OF THESE APPROVED PLANS MUST BE ON lHE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS 9 THE CONTRACTOR SHALL PROVIDE THE CITY OF RENTON WITH AN AS-BUil T DRAWING OF THE SANITARY SEWER SYSTEM. WHICH HAS BEEN STAMPED AND SIGNED BY A LICENSED PROFESSIONAL ENGINEER OR LICENSED PROFESSIONAL SURVEYOR 10 BACKFILL SHALL BE PLACED EQUALLY ON BOTH SIDES OF THE PIPE IN LAYERS WITH A LOOSE AVERAGE DEPTH OF 6 INCHES. MAXIMUM D[PTll OF 8 INCHES THOROUGHLY COMPACTING EACH LAYER TO 95 PERCENT OF MAXIMUM DENSITY. THESE COMPACTED LAYERS MUST EXTEND FOR ONE PIPE DIAMETER ON EACH SIDE OF THE PIPE OR TO THE SIDE OF THE TRENCH. MATERIALS TO COMPLETE THE FILL OVER PIPE SHALL BE THE SAME AS OESCRIBED 11 OPEN CUT ROAD CROSSINGS FOR UTILITY TRENCHES ON EXISTING TRAVELED ROADWAY SHALL BE BACKFILLED WITH CRUSHED ROCK ANO ME CHAN I CALLY COMPACTEO UNLESS OTHERWISE APPROVED BY THE ENGINEER 12 DATUM FOR VERTICAL CONl ROL SHALL BE NORTH AMERICAN VERTICAL DATUM 1988 METERS, AND FOR HORIZONTAL CONrROL SHALL BE NORTH AMERICAN DATUM 1983/1991 METERS UNLESS OTHERWISE APPROVED BY THE CITY OF RENTON PUBLIC WORKS DEPARTMENT. REFERENCE BENCHMARK ANO ELEVATIONS ARE NOTED ON THE PLANS 13 ALL DISTURBED AREAS SHALL BE SEEDED AND MULCHED OR OTHERWISE STABILIZED TO THE SATISFACTION OF THE DEPARTMENT FOR THE PREVENTION OF ON-SITE EROSION AFTE:R THE COMPLETION OF CONSTRUCTION 14 ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN ACCORDANCE WITH THE STANDARDS ANO SPECIFICATIONS or THE CITY OF RENTON PUBLIC WORKS DEPARTME'NT ANO THE LATEST EDITION OF THE WSDOTiAPWA STANDARDS AND SPECIFICATIONS, AS APPROVED ANll MODIFIED BY THE CITY OF RENTON IN THE RENTON STANDARD PLANS & SPECIFICATIONS. THIS SHALL INCLUDE NECESSARY LEVELING OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL. AS WELL AS PLACEMENT AND COMPACTION OF REQUIRED BEDDING MATERIAL. TO UNIFORM GRADE SO THAT THE ENTIRE LENGTH OF THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE. UNYIELDING BASF 15 SANITARY SEWER PIPE MATERIAL SHALL BE AS SPECIFIED ANO AS SHOWN ON THE PLANS 16 IN UNIMPROVED AREAS, MANHOLE TO EXTEND MINIMUM 6 INCHES ANO MAXIMUM 12 INCHES ABOVE FINISHED GRADE OR MUST HAVE MINIMUM 2' DIAMETER CONCRETE RING POURED AT GRADE. IN PAVED AREA, COVER MUST SLOPE IN ALL DIRECTIONS TO MATCH PAVING 17 THE' CONTRACTOR SHALL VERIFY ALL UTILITY LOCATIONS PRIOR TO CONSTRUCTION BY CALLING THE UNDERGROUND LOCATE LINE AT 1-800-424-5555 A MINIMUM OF 48 HOURS PRIOR TO ANY EXCAVATION 18 A PROJECT GEOTECHNICAL ENGINEERING REPORT IS AVAILABLE FOR CONTRACTOR REFERENCE AS NOTED IN THE CONTRACT BIDDING DOCUMENTS :~ • r~ ~sit.~ BHC Consultants, LLC 1601 Fifth Avanua Su,ta ;ca Sealtla Wasr,ngton g51a I LOO 5J, 34GO 206 50C 3406 ,fax, A""" ohcconsultan:s com SURVEY NOTES 1. THE LOCATIONS OF EXISTING UNDERGROUND UTILITY SYSTEMS, AS SHOWN HEREON, ARE TAKEN FROM UTILITY LOCATE PAINT MARKS OR AS-BUil T PLANS ANO ARE SHOWN IN AN APPROXIMATE WAY ONLY 2 TllE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF All EXISTING UTILITIES BEFORE COMMENCING WORK, AND AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL llAMAGES WHICH MIGHT BE OCCASIONED BY THE CONTRACTOR'S FAILURE TO EXACTLY LOCATE ANO PRESERVE ANY ANO ALL UNDERGROUND UTILITIES. ALL LOCATOR SERVICES SHOULD BE CONTACTED PRIOR TO ANY CONSTRUCTION OR SUBSURFACE EXPLORATION CALL 1-800-424-5555 3 FIELD SURVEY KPG. MARCH2014 4 CONTOUR INTE:RVAL"' 1 FOOT 5 STORM ANO SEWER CONNECTIONS HAVE BEEN DRAWN FROM CENTER OF LID TO CENTER OF LID 6 THE LOCATIONS ANO DIMENSIONS OF UNDERGROUND VAULTS HAVE NOT BEEN VERIFIED AND ARE APPROXIMATE HORIZONTAL DATUM WASHINGTON STATE PLANE COORDINATE SYSTEM. NORTH ZONE, NAO 83i2011 VERTICAL DATUM NAVO 88 TRAFFIC CONTROL NOTES AN APPROVED TRAFFIC CONTROL PLAN MUST BE OBTAINED FROM THE CITY OF RENTON'S TRANSPORTATION DEPARTMENT PRIOR TO BEGINNING ANY WORK IN THE PUBLIC RIGHT-OF-WAY 2 SUNSET BLVD N IS A HIGH TRAFFIC VOLUME ROAD WITH MULTIPLE LANES. CONTRACTOR SHALL FAMILIARIZI: lHEMSELVES WITH THE AREA IN ORDER TO PREPARE A TRAFFIC CONTROL PLAN THAT MINIMIZES IMPACTS TO TRAFFIC FLOW. 3 DUE TO THE PROXIMITY OF THE CONSTRUCTION SITE TO THE SUNSET BLVD N OFF-RAMP FROM SOUTHBOUND 1-405, TRAFFIC CONTROL DEVICES WILL NEED TO BE PLACED ALONG THIS FREEWAY OFF-RAMP IT IS THE CONTRACTOR'S RESPONSIBILITY TO OBTAIN ALL PERMITS AND TRAFFIC CONTROL REVIEW REQUIRED BY WASHINGTON STATE DEPARTMENT OF TRANSPORTATION FOR THIS PORTION OF THE TRAFFIC CONTROL PLAN 4 THE HOUSER WAY BYPASS ROADfTUNNEL WILL NEED TO BE TEMPORARILY CLOSED DURING CONSTRUCTION IN SUNSET BLVD N THE CONTRACTOR SHALL SUPPLY ELECTRONIC READER BOARDS INDICATING CLOSURE OATE(S) AND TIMES THESE ELECTRONIC READER BOARDS SHALL BE PLACED AT EACH END OF THE HOUSER WAY BYPASS ROAD!TUNNEL A MINIMUM OF TEN (10) DAYS PRIOR TO THE CLOSURE(SI 5 ALL TRAFFIC CONTROL SHALL BE IN ACCORDANCE WITH THE MUTCO MANUAL. 6 WORKING DAYS AND HOURS FOR CONSTRUCTION IN SUNSET BLVD N SHALL BE SATURDAYS AND10R SUNDAYS FROM 9AM TO 7PM NO. Re:v\SION EROSION CONTROL NOTES 1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS. A PRECONSTRUCTION MEETING MUST BE HELO WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEE:R 2 ALL LIMITS OF CLEARING ANO AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE PLAN(SI SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION 3 ALI. REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED ANO IN OPERATION PRIOR TO LANO CLEARING ANO/OR CONSTRUCTION TO ENSURE THAT SEDIMENT LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM ALL EROSION AND SEDIMENT FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONOIT!ON UNTIL SUCH TIME THAT CLEARING AND/OR CONSTRUCTION IS COMPLETE ANO f10TENTIAL FOR ON-SITE EROSION HAS PASSED. THE IMPLEMENTATION MAINrENANCE, REPLACEMENT AND ADDITIONS TO EROSION.'SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITEE 4 THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SllE CONDITIONS. AS CONSTRUCTION PROGRESSES ANO UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE PERMITEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL BE NECESSARY TO ENSURE COMPLEff SILTATION CONTROL ON THE PROPOSE:D SITE. DURING THE COURSE OF CONSTRUCTION. IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE PERMITEE TO ADDRESS ANY NE:W CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO PROVIDE ADDITIONAL FACILITIES. OVER AND ABOVE MINIMUM REQUIREMENTS AS MAY BE NEEDED. TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THf RECEIVING DRAINAGE SYSTEM 5. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY IT DOES NOT CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN SIZE NOR LOCATION OF PIPES, RESTRICTORS CHANNELS. OR RETENTION FACILITIES 6 DURING THE TIME PERIOD OF OCTOBER 1 ST THROUGH APRIL 30TH. ALL PROJECT DISTRIBUTED SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UN-WORKED FOR MORE THAN 12 HOURS, SHALL BE COVERED BY MULCH. SODDING OR Pl ASTIC COVERING IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS ANTICIPATED FOR A PERIOD 30 DAYS OR MORE. ALL DISTURBED AREAS MUST BE IMMEDIATELY STABILIZED WITH MULCHING. GRASS PLANTING OR OTHER APPROVED EROSION CONTROL TREATMENT APPLICABLE TO THE TIME OF YEAR. GRASS SEEDING ALONE Will BE ACCEPTABLE ONLY DURING THE MONTHS OF APRIL THROUGH SEPTEMBER. INCLUSIVE. SEEDING MAY PROCFF[), HOWEVER. WHENEVER IT IS IN THE INTEREST OF THE PERMITEE, BUT MUST BE AUGMENTED WITH MULCHING NETTING OR OT HER TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE SPECIFIED TIME PERIOD 8 FOR ALL EROSIQNiSEOIMENTATION CONTROL PONDS WHERE THE DEAD STORAGE DEPTH EXCEEDS 6 INCHES. A FENCE IS REQUIRED WITH A MINIMUM HEIGHT OF THREE 13) FEET. 31 SIDE SLOPES 9 A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, ;>4 FEET" X 50 FEET X 8 INCHES OF 4 TO 6 INCH QUARRY SP ALLS SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS AND EGRESS TO THE CONSTRUCTION SITE ""' ,ec -'LA .....;:,~: . ..;,•,, .... , CITY OF ;R T -ll~HOU~l ~ l ® """; 51MQN RENTON --~;::,-:;:, I •. KR~HEL ~ ~ :..~:.;..::;. Public Wori,;s Oept BY IDATEIAPPRI-. GENERAL CONSTRUCTION SEQUENCE THE GENERAL CONSTRUCTION SEQUENCE PROVIDED IS A SUGGESTED SEQUENCE OF WORK AND DOES NOT DESCRIBE ALL ELEMENTS OF WORK. THE GENERAL CONSTRUCTION SEQUENCE IS PROVIDED FOR CONTRACTOR REFERENCE ONLY AND DOES NOT IMPLY DIRECTION, MEANS, OR METHODS OF CONSTRUCTION THE CONTRACTOR SHALL BE RESPONSIBLE. FOR COMPLETING ALL ELEMENTS OF WORK AS DESCRIBED IN THE CONTRACT DOCUMENTS 1 INSTALL EROSION CONTROL MEASURES 2 INSTALL TEMPORARY SEWER BYPASS SYSTFM:S) TO ISOLATE AREAS OF WORK 3 PERFORM DEMOLITION OF EXISTING SMH 5317-185, 12-INCH SANITARY SEWER AND OTHER SITE ELEMENTS WITH EXCEPTION OF WORK IN SUNSET BLVD N 4 INSTALL SMH 5317-185 ANO 24-INCH SANITARY SEWER TO EDGE OF SUNSET BLVD N 5 ESTABLISH TRAFFIC CONTROL IN SUNSET BLVD N AND ELSEWHERE AS REQUIRED 6 REMOVE EXISTING SANITARY SEWER IN SUNSET BLVD N AND INSTALL REMAINING 24-INCH SANITARY SEWER TO EXISTING SMH 5317-186 7 RECHANNEL EXISTING SMH 5317-186 8 PERFORM CONCRETE AND ASPHALT RESTORATION IN SUNSET Bl.VD N 9 REMOVE TRAFFIC CONTROL MEASURES 10. RESTORE SITE BETWEEN SMH 5317-185 ANO SMH 5311-186 11 REMOVE SMH 5317-249 TOP ANO INSTALL GIPP IN EXISTING 24·1NCH SANITARY SEWER BETWEEN SMH 5317-249 AND SMH 5317-185 12. RESTORE SMH 53\ 7-249 AND SURROUNDING CONCRETE PAVEMENT 13 REMOVE EROSION CONTROL MEASURES AND PERFORM FINAL CLEANUP '" ~ r~· _,.~.,. v-· \ ·.. I,--r ..... !..;;,~ Lt~J t_ i \. t~ i} jUl l '1 '.7~i',4 ·CtZ'1' ·::~·.: rI.J..;.\()t-~ ,:\\·0_ )~,·, Preliminary 90°/o Review Set Call 48 Hours Before You Dig Not For Construction 06-2014 ( CENTRAL RENTON SEWER INTERCEPTOR RELINE & UPSIZE PROJECT NOTES & GENERAL CONSTRUCTION SEQUENCE 1-800-424-5555 JNIJS,HGH~UN~ ~[ '<VIC;>, .JUNE 2014 ---G-2 ,...., 2 "'' 6 "' "' "' 0 r-'.. "' fl.. s s --' I .,_. LEGEND: EXISTING --------RIGHT OF WAY CENTERLINE --------PROPERTY LIN[ --------EASEMENT CONTOUR .,~ MONUMENT IN CASE '"'• SURFACE MONUMENT " PK NAIL REBAR& CAP SEWER MANHOl F POWER POLE POWER POLE W>UNDERGROUND CONNECT GUY ANCHOR POWER MANHOLE TELEPHONE MANHOLE GAS VALVE WATER VALVE WATER METER WATER VAULT LID FIRE HYDRANT BLQW.QFF BORE SITE (W/ FIELD DESCRIPTIONj MONITORING WELL GUARD POST SIGN SHRUB DECIDUOUS TREE. DIA (i;t OF TRUNKS) PAINTED POWER PAINTED TELEPHONE PAINTED FIBER OPTIC PAINTED TV PAINTED WATER PAINTED GAS SEWER FENCE RAISED-BUTTON SOLID STRIPE RAISED-BUTlON SKIP SfRIPE EDGE OF PAVEMENT CONTOUR CONCRETE GRAVEL :l • r .. cmtsl~ BHC Consultants, LLC 1601 Fdth A•,,,nue S.J1\s SJO s~at·.I~ Wash1ngtur1 98101 2tlc) 5-JS ~4GD 206 505 3.:.()6 ,fa,, m,,,, orcccrsu•t~~,s com PROPOSED ------------ ------t>---~--<j--- () ® ///////////. ~ <( " DI ~ = $-. :-J ~-,c?·-\:s:,o,J [' ; ·--;J [t?rP,;s,;,~a;J [<J· ,-~-~-, .rj E111!..c.!1.1'-'-'TI [c/D!llsg'jj X X X ~/,,.,. - SAVE ABBREVIATIONS MSHTO AMERICAN ASSOC OF STATE HIGHWAY TEMPORARY CONSTRUCTION EASEMENT TRANSPORTATION OFFICIALS PERMANFNT CONSTRUCl ION EASEMENT AB ANCHOR BOLT AC ASPHALT CONCRETE CLEARING LIMITfWORK ZONE DELINEATION FENCE ACP ASPHALT CONCRETE PAVEMENT ADS POLYETHYLENE PIPE FILTER FABRIC FENCE ALO ALDER GRAVITY SEWER APPROX APPROXIMATE APWA AMERICAN PUBLIC WORKS SANITARY SEWER MANHOLF OR STRUCTURE ASSOCIATION TRACER WIRE HANO HOLE. AVE AVENUE TO BE REMOVED OR ABANDONED BF BLIND FLANGE BH BORE HOLE SLOPE (PROFILE) BLVD BOULEVARD DIRECTION OF FLOW (PLAN) BM BENCH MARK BNSF BURLINGTON NORTHERN SANTA FE SIGN LOCATION CB CATCH BASIN CHANNELIZING DEVICES ccw COUNTER CLOCK WISE COF CONTROLLED DENSITY FILL PROTECllVE VEHICLE -RECOMMENDED CF CLEARING LIMIT FENCE PORTABLE CHANGEABLE MESSAGE SIGN CHLK CHA.IN LINK GIPP CURED IN PLAC[ PIPE ARROW PANEL C/L, CL CENTERLINE CLR CLE:AR ASPHALT CONCRETE PAVEMENT (ACPJ -PLAN co CLEANOUT CONC CONCRETE ASPHALT CONCRETE PAVEMFNT {ACP) -SECTION CPLG COUPLING CSBC CRUSHED SURFACING BASE COURSE CONCRETE CSTC CRUSHED SURFACING TOP COURSE PRE-CAST CONCRETE D,W DRIVEWAY D DEPTH, DOUBLE GROUT OR SAND OBH DIAMETER BREAST HEIGHT 01 DUCTILE IRON CDF DIA DIAMETER DIP DUCTILE IRON PIPE FOUNDATION GRAVEL, DRAIN ROCK DIPS DUCTILE IRON PIPE SIZE DR DRIVE PIPE BEDDING PEA GRAVEL DTREE DECIDUOUS TREE csrc DWG DRAWING E EAST. ELECTRICAL CSBC EA EACH EW EACH WAY COMMON BORROW EL. ELEV 1::U:VATION EP EDGE OF PAVEMENT SELECT BEDDING EX EXISTING UNDISTURBED NATIVE " FINSHED FLOOR FG FINISH GRADE FT,' FEET EXISTING TREE\SJ TO Bf: REMOVED G GAS GALV GALVANIZED GRAV GRAVEL GV EXISTING TREE(Sl TO BE SAVED GATE VALVE HOPE HIGH DENSITY POLYETHYLENE HMA HOT MIX ASPHALT HORIZ. HORIZONTAL HT HUB AND TACK HYO HYDRANT ID INSIDE: DIAMETER IE INVERT ELEVATION IN INCH IPS IRON PIPE SIZE JB JUNCTION BOX L LENGTH Le LINEAR FEET LN LANE LT LEFT MAX MAXIMUM ~,,,~,,,.~ '" i,~,r:- :.. Wl<ITCHOIJS[,-;; P SIMON J ..:ik5~EL p E -· ' --·---NO. REVISION t!T UAI 1:. Al"l't< '""""" MB MOD MFR MH MIN MON MUTCD MW N NF NIC NO. NTS NW QC OD OH OP OPG p PE PG PSF PSI PVC PVMT PWR RD REINF REQ'D RET ROW. R/W RRC RT s SCH SD SDMH SOR SE SERV se SSFM SMH ss SST ST STA STD STL SW T T&B TBM TELJB TELR TV TVJB TVR TYP UGP UNO VCP VERT Wl w WL WM WSOOT ws I "=2C' I "::::_--, .:.... ""'-;:.,;"', MAIL BOX MAXIMUM DRY DENSITY MANUFACTURER MANHOLE MINIMUM MONUMENT MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES MONITORING WELL NORTH NORTHEAST NOT IN CONTRACT NUMBER NOT TO SCALE NORTHWEST ON CENTER OUTSIDE DIAMETER OVERHEAD OVERHEAD POWER OPENING POWER PLAIN END, PROFESSIONAL ENGINEER PERFORMANCE GRADE POUNDS PER SQUARE FOOT POUNDS PER SQUARE INCH POLYVINYL CHLORIDE PAVEMENT POWER ROAD REINFORCEMENT REQUIRED RETAINING RIGHT OF WAY RED REBAR AND CAP RIGHT SOUTH, SLOPE SCHEDULE STORM DRAIN STORM DRAIN MANHOLE STANDARD DIMENSION RATIO SOUTHEAST SERVICE SILT FENCE SANITARY SEWER FORCE MAIN SEWER MANHOLE SANITARY SEWER STAINLESS STEEL STREET STATION STANDARD STEEL SOUTHWEST TELEPHONE TOP ANO BOTTOM TEMPORARY BENCHMARK TELEPHONE JUNCTION BOX TELEPHONE RISER TELEVISION (CABLE) TELEVISION (CABLEI JUNCTION BOX TELEVISION (CABLE) RISER TYPICAL UNDERGROUND POWER UNLESS NOTED OTHERWISE VITRIFIED CLAY PIPE VERTICAL WITH WATER, WEST WATER LEVEL WATER METER WASHINGTON STATE DEPARTMENT OF TRANSPORTATION WATER SERVICE """"'~.::f',,).,"'f,,,, CITY SYMBOLS AND DESIGNATIONS TITLE TITLE ~ DETAIL NUMBER DETAIL 1 SC:ALL 1·2" -1 -0 TITLE TITLE SECTION SCAif 1;, ~1-C, C-2, DRAWING NUMBER VVHERE DETAIL IS REFERENCED. USE DASH IF DETAIL APPEARS ON THE. SAME SHEET AS SHEET REFE:RENCED /~ SECTION. ELEVATION OR PROFILE REFERENCE LETTER a6 --DASH IF SECTION IS TAKEN ON THE SAME DRAWING. USE DRAWING NUMBER IF SECflON WAS TAKEN ON A DIFFERENT SHEET ~ CTION LETTER £ 1 ---- DRAWING NUMBER WHERE SECTION IS DRAWN. USE DASH IF DETAIL CALLOUT 4/C-1 SECTION APPEARS ON SAME: SHl:ET AS CUT ~ ELEVATIONU:TTER A 1 '-...._ DRAWING NUMBER WHERE ELEVATION IS DRAWN USE DASH IF ELEVATION APPEARS ON SAME SHEET AS REFERENCED PIPING DESIGNATIONS PIPING IS IDENTIFIEO BY ITS SIZE FOLLOWED BY PIPING SYSTEM AS FOLLOWS DESIGNATES NEW PIPING .,......-----{ 8" SSFM ) DESIGNATES EXISTING PIPING· ,--·· EX 8" SSFM FOR NEW PIPING MATERIAL FITTINGS. AND VALVES. SEE SPECIFICATIONS PIPING SYSTEM DESIGNATIONS FOR EXISTING PIPING INDICATE TYPE OF SERVICE AND DO NOT IMPLY PIPE MATERIAL USED, UNO I LDRAWING# LDETAIL# DRAWING REFERENCE r.,,1~=t"'-C'P ,1-· r '\ ,:;: ' -\ -. ;,._. ">.,._•· ) t v,•' G GENERAL C CIVIL OF JUL I 7 ?il, (:;~TY 0 Preliminary 90°/o Review Set Not For Construction 06-2014 r~TtJ; J ' Cal I 48 Hours Before You Dig 1-800-424-5555 LJ~'lFRS,RO,,MJ SFR,ir:' JUNE 2014" ~ ;R RENTON CENTRAL RENTON SEWER INTERCEPTOR RELINE & UPSIZE PROJECT Public Worb Dept. LEGEND. ABBREVIATIONS. SYMBOLS & DESIGNATIONS G-3 ~ l 1 "' "' 01 ;{! 91 ~ I I I, ~ V !/ w " S,A~ :n FeN ~h H 15·1t1~0 ' ·1.1~_]7{!411 \ -; I I I '-'-"" \ ---\~-7 --I \ . I '"-GB-15 I I REMOVE EX 77" DIA BRICK MH AND REPLACE WITH _,;' •·1 NEW84"D1ASMH5317-185. ,}/ PER DETAIL 1 iC-2 '--'_.1-, STA 1+00 ~ OFFSET 1' RT \ 'l \ / \ ~~-\ I I "' \ ~ 11 0 ©r\ ' I 8 I 11 /~ 24'SS) f? ~~ ~\ \ 111 / SDR35PVC ~ ............_ 1+00 \ '.._ f 1 / ,--AB-1 ~ /:'~~ " 1' I I I ----If-;L~/-r+-,4-_,L-.r~,,.- \,• !,, I ' !~"'"-\ (';\ '\I \_ REMOVE EX \ °\V I· 12"VCPS5 I \ i1 .1 \, = / I '2; I ii I t j \,!_ AS REQUIREb ~ 0/ / __ .;- I I / ,,--·EX1B"PVCSS /.// -EX 60" DIA / SMH 5317-186 SADDLE TYPE -/.__'.'1"'_/tv_: ___ j/ __ /_,-Q_, __ ~l----~;_~_-_---1---r-r-_:_,7"7/l-a/ ----ST:~_::± -;:-:,:;=;;:;::;,:;=;;-;::;:::;::~!';:c-:,:b:;::;;:;;:;,:;,-;,1:;::;;::;c;c -z ----.,,.~/¥ __ ._ r-/-/~/-0-j'------ ( ,;__j__ -FK' /;/ I / ",~, s, o; .... ~i I I E 'JO.IMO~ 0 I I ["~'% ji 5 1/ Ji/ I/ ------ t I I I I I I I t EX24'VCPSS. / SEE OWG C-3 FOR SEWER RELINE REQUIREMENTS __ / //_ \ I \ EX 15" CONC ss I /f ------ENlffil'RISE CAR~:""""' ae Wc'i__ 7 I I .~/ EX-12"VCPSSA:;_JNO // ' SMH PLUGGED / ANO ABANDONED ' BELOW GRADE ,,, ~ ii ,._ /}/ § , J: -~ "' " r---------------~------~-------~------~-------~------~----------~65 60 55 ~o 50 81 I~'~ APPROX EX FEN:ELINF ~ 0 " 0 Q X w _/ V 1·~ :~~ ~ / 45 40 I EX24" VCPSS \ 35 I \ I J f~" "I ~ ~I, i ~~~I- I ~ -.""' / / APPROX FINISHED GRADE AT CtL STATIONING--\ .. ~ / Q s X X w • -, ~ VERIFY DEPTH OF EX UTILITIES. TYP : -k'c W\ll-l ,22t.LF Rl:.t,"o\1€.€.)(.''t\/~ -··--~ @ PIPE TRENCH DETAIL PER RENTON STD PL.AN 110 8 " ' , .. , C/L SUNSET Bl.VON y ffi-/' . --:r: _-,--------:: I / -~~ ~- ~ 0~ ~ >< NW ~~ .,j·..-j •.. I:,!~ 60 55 50 45 40 " 30 " ,0 :f.· "L. ~~~.~- 15 1-+-00 .,. ---------~---------------------------------------'15 I I I I I I I I I I ( I" h ; /2 If k I I I NOTES: CONTRACTOR SHALL DEVELOP AND SUBMIT A TRAFFIC CONTROL PLAN FOR WORK IN SUNSET BLVD N. THE TRA.FFIC CONTROL PLAN SHALL BE APPROVED BY THE ENGINEER PRIOR TO BEGINNING ANY WORK IN SUNSET BLVD N. SEE DWG G-2 FOR ADDITIONAL TRAFFIC CONTROL NOTES SEE SPECIFICATIONS FOR BYPASS PUMPING REQUIRE'MENTS 3 REFER TO GEOTECHNICAL ENGINEERING REPORT {AVAILABLE FOR REFERENCE ONLY) FOR INFORMATION ON PROJECT SOIL BORINGS AB-1 AB-2. GB-14ANDGB-15 ANY AND ALL WORK WITHIN 25' OF RAILROAD TR.A.CK CENTERLINE REQUIRES A BNSF FLAGGER ONSITE THE CONTRACTOR SHALL PAY AND ARRANGE FOR A FLA.GGER ONE MONTH PRIOR TO CONSTRUCTION ACTIVITIES. ALL EXCAVATION WITHIN R.<\ll ROAD LOADING MUST HAVE AN ENGINEERED SHORING PLAN (PE SEALED) APPROVED BE BNSF PRIOR TO CONSTRUCTION CONTRACTOR SHALL SUBMIT SHORING PLAN THREE WEEKS PRIOR TO CONSTRUCTION FOR ENGINEER ANO BNSF APPROVAL. SEE WSDOT SPEC SECTION 2-09 FOR STRUCTURAL. SHORING REQUIREMENTS. CONSTRUCTION NOTES: 0 (,) 0 0 0 0 0 0 0 @) REMOVE AND REPLACE AC PAVE:MENT PER RENTON STD PLANS110AND1101 REMOVE AND REPLA.CE SIDEWALK, CURB AND GUTTER, AND AC PER RENTON STD PLANS 102 AND 103. AND PER WSDOT STD PLAN F-1() 12-02 REMOVE EXISTING 6' CHAIN LINK FENCE AS NECESSARY ANO REINSTALUREPLACE FENCE TO MATCH EXISTING REMOVE AND REINSTALL DISTURBED R.<\ILROAD TIES BETWEEN BARK AND GRAVEL LOT TO MATCH EXISTING REMOVE SOIL IN 3' LAYERS AROUND MH TO PREVENT SOIL LOADING ON ONE SIDE OF THE MH CUT UPSIZED PENETRATION WITH POWER SAW, NO HAMMERING AL.LOWED. CONNECT NEW SEWER PIPING WITH NPC WATERSTOP GROUTING RING, OR EQUAL FILL VOID WITH NON SHRINK GROUT REMOVE AND REPLACE MH CHANNEL. PER SPECIAL. PROVISIONS SPEC SECTION 7-26, EXCEPT EXTEND CHANNEL HEIGHT TO TOP OF 24" SS RE'MOVE EXISTING SHRUBBERY AS NECESSARY ANO REPLACE WITH SEED, FERTILIZER ANO MULCH, PER WSOOT SPEC SECTION 8-01.3(2). REMOVE AND REPLA.CE DISTURBED GRAVEL ANO BARK TO MATCH EXISTING TRENCH BACKFILL SHALL BE CSTC FOR ALL SEWER UNDER PAVEMENT. NATIVE MATERIAL FOR TRENCH BACKFILL MAY BE USED ELSEWHERE PROVIDED IT MEETS THE REQUIREMENTS OF GRAVEL BORROW PER WSDOT SECrlON 9-03 14(1) Preliminary i') r ,·, ,.9Q 0/'!. Review Set ,, "!--~ \ ... i· ! ~· i_ ,-. -' Call 48 Hours Before You Dig ·--· --, N'oitl=f)i:-.-Construction ·-06-2014 1-800-424-5555 UM">~•JR•C>UNlJ s,~w.E -:l·r~ ~ifs!~ BHC Consultants, LLC 16C1 F1t.r -'.·..onue Su,te ~OJ Sea Ille ·.v~sr,,og:cn 98 10' 2C·O 505 3400 Z06 505 3406 ,•a,1 ;,t'N"' brccorsulla·ls cam ·-'" -T \11\-il"EHOVSE. PE --P. Si'-!J-~ -" KR~SH£., ~ E. I DATE I APPR I ~ -HCRl7 1"'m'\,'-n" VE'<T 1" 5· u'" --I L~E. """'~~~.,., ~ CITY OF 1 CENTRAL RENTON SEWER INTERCEPTOR ~ I JUNE 201+ RENTof'i.:<'1 •, .. -RELINE & UP SIZE PROJECT si'wrn UPSIZE PLAN & PROFILE Pubhc Works Oept. i '; -'~. . I C-1 NO. REVISION BY l N ~ " C') a e'.- N (L § . ~ EXTEND CHANNEL TO TOP OF 24" SEWER, TYP CONTRACTOR TO FIELD VERIFY SKEWED ANGLES AND INVERT ELEVATIONS PRIOR TO FABRICATION OF BASE I.INFR. TYP - \ EX 24" VCP SS. FIELD VERIFY PIPE OD \ \\' 1[3.,2± ~ ,\ \ \ ~ SOR 35 PVC \ ~ 8'' ,OMH PER WSDOT STD PLAN B-15.60-01 ,-MANHOLE BASE LINER PER SPECIAL PROVISION SPEC SECTION 7-05 0316) // l ~~i~SET ' ,- IE 31.41 L { 24"SS ) SDR 35 PVC BELL AND GASKET TO ACCEPT PVC PIPE BY BASE LINER MFR, TYP NOTES: MANHOLE ACCESSORIES COATING AND GENERAL INSTALLATION PER RENTON STD PLAN 400.1, EXCEPT MODIFIED AS SHOWN EX 15" CONG SS, FIELD VERIFY PIPE OD ---.. FLEXIBLE TRANSIT~ON ",., COUPLING, FERNCO ' OR EQUAL, TYP 2 / SMH 5317-185 DETAIL MS IE 31 ?ct: 15" ss SOR 35 PVC CONTRACTOR TO FIELD VERIFY ENTRY ANGLE PRIOR TO FABRICATION OF BASE LINER ffi C-2 .... 16~, F .m, Ave-ue Suite 5CO T. M'll'lHOUcit, f-' l ~,.~.;:;":.\':J,.,, ;R CITY OF RENTON Preliminary 90°/o Review Set Call 48 Hours Before You Dig ••• 4 ,--,.---, ,Ji~t J?c_ ~Q.nstruction 1 ., F-., (--l \, ,-01-2014 !"'\, f .... ···...,/ '.,---' 1_ --· J,GicN'IR/IL 1;1~1.TON SEWER INTERCEPTOR , UL. l REiJN!'.' & UP SIZE PROJECT 1-800-424-5555 'JNl)f """C,)UND SC"VICC JUNE 201+ ~ .~ BHCCoasultants,LLC .= AC S<DW" ® W-. ,.,,,._N,soeswaso, "', "'°' --DATUM · ER DETAILS d 21}e sos 3~C~ """""'-_ ., "'-'-,.,._, I I Public Wor!(s Dept. ~'TV (),:: ~'f('ffll_ S SEW '°''°°''~""' ' '"""'·· ,, ·---! ' .• ',__ " 1-· 5 0 ~ I S L AN S """ °'"'""""'"'"'m RE'1SION 8' O,TE APPR ----' • · , · ' I~ . NO. t I "~ ,,1·,,,_., '• C-2 l ~ C\J I'-G ('") 50 C) 100 ~ j ~ ::r:: S c co•e m Feer ' f... 0... Ct:: s: a s: < ." :~ :. e.··!;" ~ " ~ ~ Q "' ? <_:.. ~ s f i 'l: ;;: ... ~~ ff '.;l; B -r~~-· • lt/ ~ STREET N 4TH ST N 4TH ST UPSTR EAM MANHOLE 5317-185 5317-1 84 2 ~ D &.. '6C:1 F hriAvBr:ue Su1fl:",0:) APPROX DEPTH TO PIPE INV ERT 11.3 FT 4 8 FT G) SEE DWG C-1 FOR REPLACEMENT DETAILS ,1~, .z~ , ~ ~ '!,.. -z ~ ~ ~. SCHEDULE · CURED IN PLACE PIPE FOR SANITARY SEWER DOWNSTREAM APPROX DEPTH TO EXISTING PIPE MANHOLE PIPE IN VERT MATERIAL PIPE SIZE 5317-184 4 8 FT VITRIFIED CLAY 24" 5317-249 5 6 FT VITR IF IED CLAY 24" TOTAL 24" CIPP PLAN AND SCHEDULE PLAN ffi SCALE ' :: :o •C APPROX RUN LENGTH 356 FT 203 FT 5 59 FT --"G :1 • t ~ ~ ~· r ~ ,1 ·~ -~ J I ~~··~ APPROX # L ATERALS TO REINSTATE 3 0 J AS r-.)T[J ,c)IIU~:~-;H, NOTES : CONSTRUCTION NOTES : CONTRACTOR SHALL DEVELOP AN O S UBMIT A TRAFF IC CONTROL PLAN FOR WORK INN 4TH ST THE TRAFFIC CONTROL PLAN SHALL BE A PPROVED BE THE ENGINEER PRIOR TO BEGINNING ANY WORK INN 4TH ST. 8 NEW SMH 5317-185 SHALL B E INSTIii.LED PR IOR TO BEGINNING C IPP W ORK REPLACE TYPE C TRAFF IC CURB TO MATCH EX PER RE NTON STD PLAN H007 -----, APPROX REPLACEM ENl LIMITS . TYP REPLACE YELLOW PAVEMENT MARKING TO MATCH EX REMOVE AN D REPLACE 4 CONC PANELS PER RENTON STD PLAN 1 11, APPROX SIZEa 10·,10·,12· THICK EACH PANEL MANHOLE AND PAVEMENT RESTORATION (LOOKING WEST) DETAIL {f\ NTS REMOVE 72 " OIA MANHOLE' TOP FOR INSTALLATIO N OF CIPP. REINSTALL AN O ROTATE A PPRO X 135' CCWAS APPROVED BY rHE CI TY IN THE FIELD REPLACE 4· WHITE TYPE 1 LINE MARK ERS TO MArCH EX PER RENTON STD PLAN H007 AN O 109 1, TYP 20 MIN Preliminary 90°/o Review Set Call 48 Hours Before You Dig Not F o r Construction 06-2014 1-800-424-5555 J ,,.ut;RC,HQIJ,-.0 :>E~l.1Cl JUNE 2014 ~; ~ []· ~ BHC Consultants, LLC :!.~ ~ Seatle hill'lhmgl:ir,9810" i\ · IO 2C6 505 34,C -·=. . I • ·-.._. I , j I =oowoo ,,,. n<·-· '< I • ---I ___ ·--, , ; ~ C Q N S U L TANT S w~., bh ccoo,.,..,n,, ' 0 "' NO. REVISION oi ();.,~ ;..??R -• : 'i; .,.,.. ~ WHll:.J"IOUS t.. "°'t; ® ;R CITY OF p ~M 0 r4 ----·-L~~ RENTON 0 ••••L • •••••••• -~ --, Publi c Worito Dop\. sc.....i~· I CENTRAL RENTON SEWER INTERCEPTOR RELINE & UPSIZE PROJECT DATE: TO: FROM: SUBJECT: Deoartment Ch an1ed: Account Number FINANCE AND INFORMATION SERVICES DEPARTMENT MEMORANDUM July 17, 2014 Casaundra Commodore, Finance & Information Services Department Kris Sorensen Re: INTERFUND TRANSFER REQUEST Instructions: Please note that failure to provide all digits will result in processing delays. All Signatures and correct documentation must be included. Please prepare the following inter-fund transfer: Project, function, task, sub-task Description 426.465500.018.594.35.63.000/U45497 Central Renton Sewer Reline & Upsize Environmental fee 426 .465500.018.594. 35 .63 .000/U 45497 Central Renton Sewer Reline & Upsize Technology fee ~- ~ X II / Total *Char!!ed Deoartment Authoriza•;,(n* ~ A/ APPROVAL SIGNATURE: ( ( i ·:: ... ....--r '-......-/ '-_,, ---..J ...... -, 17 Printed N arne _D_a_v_id_C_h_n_·s_te_n_s_en ______________ Date Mtt) 28 1 2014 CREDIT· Amount $1,000.00 $30.00 $1,030.00 Account Number Project, function, task, sub-task Description Amount 000.000000.007.345.81.04.000 Central Renton Sewer Reline & Upsize Environmental fee $1,000.00 503.000000.004.322. l 0.00.000 Central Renton Sewer Reline & Upsize Technology fee $30.00 Total $1,030.00 Reason: Note: Documentation to support this transfer request must be attached and all signatures are required. Cash Transfer Form/Finance/bh Revised 01/09