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HomeMy WebLinkAboutPermit 90-38-SPE - SEATTLE WATER DEPARTMENT - CEDAR RIVER PIPELINE SENSITIVE AREA WAIVER90-38-spe 53rd avenue south southcenter parkway cedar river pipeline Minutes - Regular Meeting December 3, 1990 Page 2 Public Hearing (con's) Hearing Postponed Request for; Waiver TO CRITICAL AREA SENSITIVE AREAS MORATORIUM ORDINANCE 1544 and 1550 - (Moratorium) from Seattle Water Dept. Public hearing closed - 7:45 p.m. As the proponent had not yet arrived at the meeting, Mayor VanDusen postponed the hearing on this issued until later in the agenda. City Engineer Ron Cameron reported the applicant, Seattle Water Department, is requesting a waiver in order to maintain/repair the existing Cedar River water pipeline located west of 53rd Ave. So., east of Southcenter Parkway, and perpendicular to an extension of So. 158th Street or Tukwila Parkway, generally located under the Tukwila I -5/I -405 interchange. The repair is to line the inside of the 16 inch pipe with a new pipe, going from a 60 inch to a 54 inch line. Three pits will be trenched m order to re -line the pipe. Walter Anton,,Chief Engineer Seattle Water Department, explained that because of the construction effort, the department needs to relocate the point at which Tukwila takes their service. There will be no change in service, only a change in the location of the tap. Mr. Anton explained that a consultant discovered an error in the design of the 60 inch pipe line that comes across the valley and serves Tukwila and the southern part of the Seattle water system. Extensive cracking and deformation of the pipe line was found and must be repaired in order to re- establish the structural strength under the interstate highway. This pipe line must be in service during the late spring and summer months; however, it can be shut down during low use period in the winter. Construction would take place in developmentally sensitive areas at Southcenter Parkway opposite the movie theater and an access pit would be constructed near Gilliam Creek. The last access pit would be located at the end of So. 160th Street where it deadends. Shored structures, designed by registered civil engineers, will be used to hold back surrounding soils. Access pits will be filled when the pipe insertion and grouting is completed. Ground conditions will be restored using appropriate surface erosion control. Construction can be accomplished within two months (January and February). Councilmember Robertson voiced his concern for work at pits two and three as the hillside is unstable. Mr. Anton responded that he is aware of the problem and reiterated that steel shoring will be used to help stabilize the slope during construction. When construction is completed, the holes will be filled with compacted soil which will leave the hillside strong, if not stronger, than it was originally. Robertson inquired about the City's liability if Council grants the waiver and the construction causes the hillside to cave in. Attorney Mike Kenyon responded that if Council knows, or ought to know, that permitting this project could lead to soil problem or cave in, the City could have some Lability. He suggested obtaining an indemnity agreement if Council approves the waiver. Mr. Anton concluded that it is the intent of the City of Seattle to take the responsibility for the work of the contractor. They have signed a letter from their risk manager to the City of Tukwila certifying their liability. A construction inspector will be on site any time the contractor is there. MOVED BY ROBERTSON, SECONDED BY DUFFIE, THAT THE WAIVER BY GRANTED.* Councilmember Robertson asked Attorney Kenyon if the standard waiver contract makes sense in this situation as the applicant is performing basic maintenance rather than developing the property. Attorney Kenyon responded that the current moratorium waiver ordinances provide for exceptions for maintenance of existing utilities. He suggested adding a stronger indemnity clause to the contract. Decembe 3, 1990 7:00 p.m. CALL I ORD ROLL C OFFIC Request t • Amend Agenda CITIZEN COMMENTS: • Request t Agenda CONS AGENDA PUBLIC Request f Property Blvd. fro by Lindar Amend Consent GS r Rezone for t 5900 Southcenter PO to C -1 is Design TUKWILA CITY COUNCIL Tukwila City Hall Council Chambers Regular Meeting M Mayor VanDusen called the Regular Meeting of the Tukwila City Council to order and led the audience in the Pledge of Allegiance. JOE DUFFLE; DENNIS ROBERTSON; JOAN HERNANDEZ, Council President; CLARENCE MORIWAKI; ALLAN EKBERG; STEVE LAWRENCE, JOHN RANTS. \ MIKE KENYON, City Attorney; JOHN McFARLAND, City Administrator, ALAN DOERSCHEL, Finance Director; ROSS EARNST, Public Works Director; RON WALDNER, Chief of Police; DON WILLIAMS, Parks and Recreation Director; DARREN ON, Assistant Planner. Co cilmembers Robertson and Moriwaki requested a discussion and on t WSDOT dump site on Highway 99 and 118th be addedto the agen • ►: under New Business. Catherin . Harris, 5610 So. 141st Street, asked to jdclress items 6c and 6d (Conse t Agenda). Councilmem • r Duffle requested Items and 6d be removed from the Consent nda and discussed unndder Old Business. a. Approval of utes: N ' ember 5 and November 19. b. Approval of Vou General Fund $ 132,706.38 City Street 23,269.63 Arterial Str . t 49,749.98 Land Building, De 22,046.07 Water F d 309.89 Sewe and 69,504.22 Wa r/Sewer Construction 2,470.57 F ter Golf Course 6,553.29 urface Water (412) 1,169.98 Equipment Rental 15,065.05 Firemen's Pension \ 3,598.10 TOTAL t $326,443.16 c. Moved to Old Business for discussion d. Moved to Old Business for discussion. e. An ordinance levying the general taxes for the City of Tukwila for the fiscal year commencing January 1, 1991. f. Acceptance of recreational/river bank/dike trail easement; authorize Mayor to sign easement agreement. MOVED BY DUFFLE, SECONDED BY HERNANDEZ, THAT THE CONSENT AGENDA BE APPROVED AS SUBMITTED. MOTION CARRIED. The hearing was opened at 7:30 p.m. Darren Wilson, Associate Planner, explained that the applicant, Linardic Design, is requesting approval to rezone property located at 5900 Southcenter Blvd., from PO (Professional Office) to C -1 (Neighborhood Retail). The Planning Commission has recommended approval to grant the rezone based upon the staff reports /findings and conclusions.. In 1984 the property was rezoned from RMH (I-Ugh Density Residential) to PO (Professional Office). The comprehensive plan has designated the area C -1 (Neighborhood Retail). Council approved a waiver from the SAO earlier in the year to process the rezone only. In July of 1990 the Board of Architectural Review approved the request for an office /retail building at this location. Minutes - Regular Meeting December 3, 1990 Page 3 Public Hearing (con't) Mayor's Proposed 1991 Budget N6W BUSINESS Ordinance Adopting a New Cabaret Ordinance and Repealing Ordinances 1170 and 470. (6c) An Ordinance Declaring an Emergency for River Bank Erosion Repairs (6d) *MOTION CARRIED. MOVED BY LAWRENCE, SECONDED BY ROBERTSON, TO AMEND THE MOTION BY INCLUDING THE ADDITION OF A STRONGER INDEMNITY CLAUSE TO THE STANDARD WAIVER CONTRACT. MOTION CARRIED. *MOTION CARRIED AS AMENDED. The waiver is granted with conditions. At 7:55 p.m. the public hearing was opened for public comment. Catherine Harris, resident, read from a prepared statement in which she noted her objections to all that has been done to date regarding the Human Services Policy and Plan. She objected also to the allocation of $20,000 to the Green River Flood Control Zone District from the Storm and Surface Water Utility and the allocation of $243,000 to Green River Dike Improvements from the same utility. It is Mrs. Harris' opinion that these projects are not functions of the Storm and Surface Water Utility. Councilmembers commented on issues raised by Mrs. Harris. The hearing was closed at 8:27 p.m. MOVED BY MORIWAKI, SECONDED BY DUFFLE, THAT THE PROPOSED ORDINANCE BE READ BY TITLE ONLY. MOTION CARRIED. Attorney Kenyon read an Ordinance of the City of Tukwila, Washington, repealing Ordinance Nos. 1170 and No. 470 codified as TMC 5.08 and adopting a new cabaret ordinance to be codified as TMC 5.08. MOVED BY MORIWAKI, SECONDED BY DUFFIE, THAT ORDINANCE NO. 1586 BE ADOPTED AS READ.* Catherine Harris, resident, commented that in her opinion the title of the ordinance is unclear. She pointed out areas of the ordinance she felt were incorrect or questionable. Chief of Police Ron Waldner noted that this type of ordinance is a preventative ordinance needed to keep the criminal element out of our community. Councilmember Robertson commented that Council had requested a clear identification of "entertainer" in order to keep from infringing on an individual's civil rights. Councilmember Rants commented that Council has left options under Section 5.08.080 (a), Appeals and Hearings, that the City Board of Adjustment or other hearing body established by the Council may hear appeals. MOVED BY DUFFLE, SECONDED BY MORIWAKI, THAT THE PROPOSED ORDINANCE BE READ BY TITLE ONLY. MOTION CARRIED. Attorney Kenyon read an Ordinance of the City of Tukwila, Washington, declaring an emergency for river bank erosion repairs and authorizing emergency expenditures. MOVED BY ROBERTSON, SECONDED BY RANTS, THAT ORDINANCE NO. 1587 BE ADOPTED AS READ.* Mayor VanDusen stated he had had concerns regarding the correct use of funds for this project. Broadly taken, the enabling ordinance does include does include the we want to continue mixing our surface water funds which are now going to be also Green River Control District funds. River and the flood control issues have always been identified separately. Until last Minutes - Regular Meeting December 3, 1990 Page 4 New Business (con't) Recess - 9:05 -9:15 p.m. PUBLIC HEARING (CON'T) Request for Rezone - for Property Located at 5900 Southcenter Blvd. by Linardic Design Citizen Comment Hearing Closed - 9:55 p.m. year, the surface water problems were in the Street Fund until the taxing authority was created, and it was separated into a utility. Public Works Director Ross Earnst stated there was no known cause for the erosion around the tree. The bank softened up and the river water going by took it out. It could be that the increased runoff from the storm weakened the road above and the filtration underneath, or the acceleration of the river itself, or a combination of both that caused the problem. Councilmember Moriwaki commented that if it's a cause from surface water, it's directly related to surface water management. If it's a cause from the river itself, it may be best addressed by the Green River Fund. Since no one knows for sure, either fund is justified. Councilmember Ekberg added that currently we are paying a King County Flood Control tax, a Green River Flood Control Zone District tax was just authorized, and we also have a surface water tax —all taxes for water. In his opinion there are two outstanding taxes, one King County -wide, one Green River -wide, spec�cally set aside for river purposes, i.e., dikes, river runs, repairs. H e feels those funds should be used for repairs of existing facilities, riverbanks, improvements to riverbanks, etc. Since there is a surface water tax being charged the City, we should use it on non - designated river areas an d dikes, etc., because there are two other taxing authorities that provide for the Green River. Councilmember Lawrence added that the other funding sources are underfunded; what we would use on this one dike would use up the funding for the whole Green River. *MOTION CARRIED Mayor VanDusen called the meeting back to order. All Councilmembers were in attendance as listed above. Attorney Kenyon explained the procedures for the quasi-judicial rezone hearing. The hearing was opened at 9:20 p.m. Assistant Planner Darren Wilson reviewed his earlier explanation of the applicant's request. Ed Linardic, 1319 Dexter Ave. No., Suite 260, Seattle, stated that by his request he is trying to achieve a project that would be financially feasible and of benefit to the City by providing a mixture of uses. Councilmember Duffle noted his concern for the volume of traffic at the location of the project. Mr. Linardic stated there was not much difference in the amount of traffic generated between a professional office and a retail establishment. Councilmember Ekberg inquired about a revised traffic signal at the intersection. Public Works Director Ross Earnst replied that a revised signal would most likely be investigated. Councilmember Robertson noted that a specific building proposal has not been offered at this time. The applicant is unsure of the type of business he will operate in the building. Robertson also expressed . concern for the current traffic congestion in the area. Mr. Linardic feels the additional traffic between the C -1 and PO zones is minimal under the circumstances. Catherine Harris, resident, spoke in favor of the rezone because of the possible benefit to the neighborhood residents. Councilmember Rants remarked that the allowable parking spaces for the establishment is determined by code. A developer can lease only so many spaces until those spaces are gone. The access to the property is terrible and hard to get into even though the visibility is good. MOVED BY EKBERG, SECONDED BY RANTS, THAT THE PROPOSED ORDINANCE BE READ BY TITLE ONLY.* CITY OF TUKWILA 6200 SOUTHCENTER BOULEVARD, TUKWILA, WASHINGTON 98188 PHONE # (206) 433.1800 Gary L. VanDwun, Mayor STAFF REPORT TO THE CITY COUNCIL PETITIONER: City of Seattle Water Department PROPERTY LOCATION: West of 53rd Avenue S., East of Southcenter Parkway, and perpendicular to an extension of S. 158th Street or Tukwila Parkway, generally located under the Tukwila I -5 /I -405 interchange. ' PROPOSAL: Maintenance /repair of existing Cedar River Water Pipeline by inserting new pipe into existing line. IMPACT OF SENSITIVE AREAS ORDINANCE: Due to a miscalculation of loading from the I -5 freeway on the pipeline, slight compression of the pipe has occurred. Reinforcing through insertion of new lining within the existing pipe is proposed. To accomplish the relining of the pipeline, trenches or access pits, approximately fifteen (15) by fifteen (15) feet need to be dug at three locations (access pits 1 -3). At these points the . new pipe will be inserted and slipped through the existing line. The westernmost access pit ( #3) is on land with an approximate slope of less than 10 percent and is located upslope and downslope of Class 2 Landslide Hazard Areas. The middle access pit ( #2) is located within the WASHDOT right - of -way, which the City maps show as modified material and therefore unclassed and has a slope of approximately twenty -one (21) percent. The easternmost access pit ( #1) is located, at its closest point, twenty (20) feet east of the centerline of Gilliam Creek. The draft SAO permits maintenance of existing utilities in sensitive areas and their buffers. DECISION CRITERIA: Ordinance 1550 states the City Council must use the following criteria to review waiver requests: 1. Intent of . the moratorium 2. Best interest of the City weighed against the interests of the individual. 3. Circumstances and hardship caused by the moratorium. 4. Damage that could result from strict adherence to the moratorium. Seattle Engineering- Department Gary Zarker, Director Norman B. Rice, Mayor Mr. Les Nelson Project Manager Seattle Water Department 9th Floor - Dexter Horton Building 710 2nd Avenue Seattle, Washington 98104 Dear Mr. Nelson: o-3s -SM. Our investigation addresses the soils at three access pit loca- tions for the Seattle Water Department's proposed Cedar River Pipeline #4 Protection construction project (see vicinity map). The soils investigation included drilling one Soil Boring, TB1, at Access Pit #3; performing portable penetrometer determinations at Access Pits #1 and #2; and referencing several reports of previous geotechnical investigations at and near the access pit areas. The soils reports we reviewed for this project are as follows: - GeoEngineers' report' "Geotechnical and Hydrological Studies, Proposed Valley View Estates, Slade Way and 53rd Avenue South, Tukwila, Washington" for Dr. H.N. Allenbach; - Shannon and Wilson's report "Report on Foundation Investigation, Existing Slide Area, Tukwila Interchange, PSH 1 (SR5), Agreement Y- 713 ", dated June 12, 1964; - Shannon and Wilson's report "Report on Foundation Investigation, North of Existing Slide Area, Tukwila Interchange, PSH 1 (SR5), Agreement Y -713, Supplement No. 2 ", dated July 14, 1964 and - Shannon and Wilson's report "Slope Stability Investigation, Tukwila Interchange ", dated April 30, 1966. Our portable penetrometer determination consisted of dropping a 25 pound hammer over a 24 inch drop driving a 1 and 3/8 inch diameter steel tip 18 inches into the soil. The number of blows for each 6 inch depth increment were recorded. "Prinled on Recycled Paper" An equal employment opportunity - affirmative action employer Les Nelson November 9, 1990 Page 2 Access Pit ' #1 Access Pit #1 will be located just northwest of Southcenter Parkway near an existing chain link fence. The surface soils at this access pit location are indicated as a well graded sandy fill. At a rather shallow depth, these sandy fill soils increase in silt content. It appears that the upper fill soils have mixed with the native soils. All soils were found wet; however, this indicated subsurface moisture condition may have resulted from the intrusion of surface ponding waters observed in this area. Our portable penetrometer determinations indicate an upper 10 feet of loose to medium dense soil overlying a stiffer or denser consistency soil (see Soil Log HH2 - labelled "A "). Additional soil boring and test pit information was obtained from Nordstrom's Southcenter Expansion; from Dames and Moore's soils investigation for the Seattle Water Department's pipeline north and west of Southcenter; and from Shannon and Wilson's soils investigation for Southcenter (labelled "B" through "H ". We recommend that the excavation bracing be designed by ar 'Licensed Professional Engineer.:': The proposed Access Pit #1 excavation is expected to penetrate select fill materials used as backfill for the 60 inch watermain. The observed areas of surface water and generally wet surface soils suggest that the contractor be prepared for dewatering. The soil loading for access pit #1 excavation bracing should consider the lateral effects the adjacent roadway fill supporting Southcenter Parkway. Backfill should be with a select structural fill compacted to 95% ASTM D -698 maximum dry density as this backfill should provide lateral support for soils supporting the nearby built -up roadway. Access Pit #2 Access Pit #2 will be located approximately one third up the slope just west of Interstate I -5. Our portable penetrometer determinations and test pit excavation (see Soil Logs HH1 and TP1 - labelled "I" and "J" in this report) indicate an upper loose to medium dense silty sand overlying a hard silt to clayey silt with sandy silt pockets and seams. Groundwater was not observed in test pit TP1. No indication of past slide activity was observed in the soils of test pit TP1. It appears that the very stiff to hard sandy silty and clayey silty soils indicated in Boring Numbers 231 and 233 and Profiles 3, 4 and 5 of Shannon and Wilsons' report dated April 30, 1966 (labelled sheets "K" through "0" in this report) are representative of this area. Access Pit #3 Les Nelson November 9, 1990 Page 3 The slide activity investigated in Shannon and Wilson's reports and also in GeoEngineer's report is indicated as both deep seated and shallow. The deep seated slope stability will not be affected as the proposed Access Pits #2 and #3 are much too shallow. The potential for shallow instability of the slope at Access Pit #2 is extremely low as the dry to slightly moist clayey silt and silty sand soils observed in the test pit TP1 suggest that any native soils exposed by the proposed Access Pit #2 excavation will be as indicated in Boring Numbers 231 and 233. These soils are indicated as either at or below the plastic limit moisture content and are very stiff to hard. However, we expect the proposed excavation to penetrate the backfill soils for the installed watermain. We recommend that, t h e ex cavati a on brae ng, , be desi�gnedd -by, , .e le ;tg-) � ; f.f �i L. nl 7- •l: k�1 ' s. ?. e... .r ' .. .. h.icensed `Pirofess `onal Eng :veer. , di also recommend that at this location, a diversion ditch upslope of the .: access pit be ; exca ,' , vated to capture storm runoff and that : this water be discharged at the toe of the slope .° Excavated soils should be off ; "slope and may be stored for reuse as backfill., if protected from rainwater intrusion. Backfill should be placed and compacted to 95% maximum dry density, as determined by ASTM D -698, to within 3 feet of the surface. The remainder of backfill should be with compacted, native, relatively impermeable silty soils thus forming a surface seal to prevent rainwater infiltration. The entire area should be hydroseeded with a WSDOT seed mix. Access Pit #3 is located just east of the asphalt access road on the east side of 53rd Avenue South. The eastern edge of this access pit is expected to be about 50 feet from the crest of the slope leading to Klickitat Drive. Our Soil Boring TB1 (labelled "P" in this report) indicates an upper approximate 12 feet of very loose, moist silty sand over- lying a very stiff to hard layering of nonplastic silt inter- bedded with sand seams and pockets. Groundwater is indicated at 17 foot depth. Our Soil Boring is relatively close to the Soil Boring DH -7A shown on Profile 5, sheet "0", with very similar soils and depth to groundwater. These soils are also very similar to the soils indicated in Shannon and Wilsons' Soil Borings 231 and 233. Les Nelson November 9, 1990 Page 4 JM cc: .Herb Johnson in f x 1... rate th s lope -:.4xcayation bracts g for the proposed;:;;Access a Licensed Professional Engineer. Ups'lope irectedaway - .' from :. ; the excavation and ;r into' 'o'r ' oin the slope . The contractor sur no t s hould be prepared to control; groundwater near the base of the excavation, pit. Any groundwater'pumpe from the excavation_,;, ' st ould not ' onto the slope or be allowe Excavation spoils are expected to be backfill for the watermain and should be stored upslope of the excavation, away from the crest of the slope. , If these excavatedrsoils da re found suitable, they should bey pro't`ected` yf*m stormwa and may be used for backfill, compacted'to 95 % D -698 maximum dry density, to within 3 feet of the surface. The remaining 3 feet can be backfilled with compacted native silts to form a surface seal for the prevention of stormwater infiltration. The finished surface should then be hydroseeded. The Materials Laboratory is available to review the proposed soil loading for all excavation bracing systems. Very truly yours, Albert C. Rice, P.E. Senior Materials Engineer Access Pit 3 VICINITY MAP- Access Pit 2 Access Pit 1 I� s Southcenter Parkway ........ O C P1 z -H 23 53 S o y n Andover Park W It Sot L._ BOR -1 NG *-- LOCATION MAP R Ca Ta4t 186 42" DATE I I -- 2- l 0 PROJECT 5 VD LOCATION n13 'TLE ENGINEERING DEPARTMENT MATERIALS LABORATORY LOG OF TEST BORING i n c.c -uss Pir I11 ) C L p,9 it R%A'I R PI Peuwi 't PROflfgtQv a N/, dt.. 6QTT r •rtill MAIN w !O SP Itc.bNri INSPECTOR JON MARSH 0 .9 H 2 HOLE NO. GRD. ELEV. P4iIie u,v4y 4 f" ';I'o pvivct= STRATA PLOW COUNT 23 1 fi 8 1 11 IZ 6 L9 23 30 8 21 a7 30 STD. PEN. FIN1= za /'4iD/UIt SANDY Ali Ir H r1& rt opt tn. 2tf 10 DESCRIPTION OF MATERIAL COMPOSITION WLI.L GRAD611 SAMD u irH 1.IIfL& SILT TRPIN ctr10 N V Ndrt — SOILS 111GAtnFILAnntl4 14St'12 ON HAND Au &P?e SAM MAN", C ols /tut MO2 SAMPLt35) CONSISTENCY DtA1SE - Noto 0- • -GAS' ilk NAMNt3R IN tW rRDP _ i1/4"0 rt P mtottot p !VISIT 7 : Loos L� itneo- Hato- ?. MOISTURE W1'1 Mtn PU4Pc Izot.SE COLOR BRncuM BRoodd WATER LEVEL ' • % 10'31'90 14:40 • FAX 206. •3665 TUK PUB WORKS t- ' ' m z o 0o II z a :!i U r z 0 'z r y ' t . ? ': 1 • r. ' •t.. i � t tLnt( : L. ,r ', • . • . r �. - 0 4 a 6 0 w co 0 a 0 m a � - .t.... - .■.. • • , fr M Jr ^� •�, • t, i t. t •I jt - i � ' ' �' ��' ; . ,. • �;. ;Sj ; ; lei. "...f .. :. r •_!i • .. +• s' '• OATE'O /3!,90 . c / Gt bv( -/a- TMArat # cereAmorfir 1 13/ - •5 Vla CP +. fi,: `.. t•.•t. -r•so. . a,...r. • . • • • Dense, moist, brown, silty fine SAND to fine sandy SILT (Fill) - -6 ,- v u - -15 - -20 - -26 -30 -35 ..7-. ATD • 11 " Dense, moist, brown, gravelly. silty SAND _ • • .. . L - orer:.._.* -. _ S - .. -. ----- . 77 r.. _ • • - ._..._y • • .._.1..- r► A Very dense. moist, gray, gravelly, silty SAND (Glacial till) H • .. v . • • 9010 " ,�, Boring terminated at 17-3/4 feet Completed B October 1986 NOTE: Asphalt concrete pavement section not indicated on log. I . __ _. - -_ — -- , . • . ._ -- — — .. — . 10/31/90 14:43 FAX 206 41, 3665 RZA RITTENHOUSE.ZEMAN to ASSOC., INC. r'' ." Gt'rfrcllnicnl / IIsitirngrnirrgirnl SOIL DESCRIPTION Ground Surface Elev.tlon Aporo*lmelely SAMPLING I 2' O0 SPLIT SPOON SAMPLE II 3 OD SHELBY SAMPLE 2.6' ID RING SAMPLE 5 BULK SAMINE • SAMPLE NOT RECOVERED Cuomo/Hants Fool TUK PUB WORKS ( GROUND WATER WATER LEVEL AT TIME OF DRILUNO " C 88R1145I&IMBn Al__ „ -S024 rr1OJECT NAME Nordstrom Southctnter Expansion 0 7 F o c SEAL DATE 0o OBSERVATION WELL TIP STANDARD PENETRATION RESISTANCE . • BLOWS PER FOOT (140 lb. h.mmer. 30 Inch drool 0 10 20 30 40 50 60 70 80 90 1 LABORATORY TESTS j • % WATER CONTENT NP NON PLASTIC /121.A.CTID LIQulD uMIT k --•- NATURAL WATER, CONTENT I lMT 10/31/90 14:44 FAX 206 4( -665 R RITTENHOUSE -ZEMAN & ASSOC., INC. !tt>sftitttt■ Grnlrchllirnl / llurlrnseningicnl Consultants p SOIL DESCRIPTION Oround Series• Elevation Approalmately Very dense (1)■ moist, brown, fine to medium SAND with trace silt (Fill) Very dense, moist, orange -brotm mottled, silty SAND (Weathered glacial till) • - 6 to1gray, gravelly, silty SAND Boring terminated at 14 feet Completed 8 October 1986 NOTE: Asphalt concrete pavement section not indicated on log. SAMPLING 1 Z co SPLIT SPOON SAMPLE n r 00 SHELBY SAMPLE ID RING SAMPLE 5 BULK SAMPLE * SAMPLE NOT RECOVERED Feet W z a. m 3 0 0 3 0 10 20 -5 -10 -16 -20 -25 ^30 -35 TUK PUB WORKS 40 GROUND WATER BORING NUMBER . 84— W.O. W..5O ?M PROJECT NAME Nordstrom Southcenter Expansion SEAL DATE STANDARD PENETRATION RESISTANCE 1. BLOWS PER FOOT (140 Ib. hammer. 30 MCA drop) • WATER LEVEL AT TIME OF DRl1 MK1 T 0 OBSERVATION WELL TIP 30 40 50 60 TO BO 90 100 S0/2" A ( rock?) a • 79/11`A 76/11 86)11 "A • i LABORATORY TEST'S • 1L WATER CONTENT NP NON PLASTIC 1 �--- N-- -- LIONID LIMIT -- NATURAL WATER CONTENT PLASTIC LIMIT e9/ 11 "A J/1818'0 11:31 1 . 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R8a114 $1t18 IlloA fit1NO4 • . ti • IA MMCARI 'rpm 11,0 I /t) 71/11 A9►arsrvw/8, 1. d0 t ' • 'SAWS/ 1t1 LY►AAp>r1 • G. 9.4111 NO WIftA stint C/lERYtO. • . ■ 1 ' ' . /, • I • • ' 1 • 1 •• • t ,0111, LOG I . OF ' BORINGS' • : .. •' . • n 1vtT104: R►•rtl TO .A.E. 42A 0. 11, t0 I11 E . 1!:! H. ,L. . • ,1 • �• • ' 1 bA1Y1123fJ! d M1b0►ttt! • f.ItY01 .B. , •• . �,. V Z.0 5.0 .D 13A C TP1 y1J,(I( TOPSDI'. CC :FACT S0.TY �61iD 4. CaNEL HARD 83 * 1 i &RAY SILT VERY HARD CRAY SI TP4 ¢5 t0PSoil CROWN GRAY SANDY CLAY 6.0 1 DROWN WET M ITT GierdElu' AN WITH its OCC_ COMES 1.4A:ER SLEPRiG INTO TEST PIT BELOW Z fT. 0 r • T • LO tLT 1F U b WW1 GRAY 51LT (0.0 '3.0 o.. VERY YRRD GRAY SILT TPA WS011 -- MOWN CLATEY SILT 5.0 &WWI VET SU.TY• # J GRM LI.1Y WOO 15 *USX 5EE?I45 iTiTO TESL PIT &IOW a rr. TEST PIT LOGS Test pits excavated. by power back hoe . Jan. L6 through t6 1959 Ni1•] X1•1 BROWN SILT IO SS 4. TP6 bPN. StLTY _OO 4 GP.MEt 53ME WYE r.Ta:�s�c�a M. SIND S NEPintatIODID YSLOt aC mi K;✓1/46 WATER SEEPING ‘N TO P.T XT 4.5 TO 5.5 F'. DEPT1i 1 • 0TP4 0 71'3 Limits of Project • _Cou..tisce - " • 1.0 10/91/90 Bt3 • GRAY- BROWN CLAYEY $11.7 W1T1i OCC. eROwN 4 GRAY PEAT I . DARK • • • ;GRAY; RGANIC SILT i GRAVE L 5✓11" MINUS 10 VERY ;oMwt "KTY SAND :4- GRAVEL 3 B 0 -- • . BROWN ' • SAND X I 19/12 • BECOMING • • ••GRAVELLY ../ VAIN DEPTH, 2Y 27/12 • .SOME SILT 11X- -- = f , 19.01 . • .VERY . •HARO • GRAY • CLAYEY • SILT • WITH 6I 90/ 10 •• • • OCCASIONAL • LAYERS • 7 57/6 F,INE SAND, •41U SOME SA ND 8 z 47/6 14:25 FAX 208 5.( )988 SHANNON & WILSON 2.0 wC 7•zi1o •1 i:C /G 91a: 9. 32-X , • I.566 e q X G6/12. SI 90/i re. B14 0 GRAY -BROWN CLAYEY SAND Willi ScME RAV 8.a 5 /LGEL q GR AY BROWN dRGANtC SILT 4 .PEAT • GRAN-moat . Q i 0 3.0 DATE - 26 - 59 DRAWN 0 I m t1 /, 5.0 w.c.: �q.oy 8.0 LEGEND B15 • •. • BRowN ORGANIC • SILT.; GI;A% SILTY MED. SAND W.c. • 6a InISA a.. 2,2a 16/4 16.0 31444/6 16.0 BLUE • GRAY q x 1 69/6 c:MP+CT SILT W1c1 % Z.8.7x l9 S 3m Ws RAY SILIV MEDIUM S AKD , CLEAN MED. SAND WITH SOME PEP, GRAVEL "MARINE SHELLS DEPTh OF BORING IN FEET LOCATION 0F' EsOR1NG LoCA'TIoN ' OF TEST Pr r. PORTER SAMPLE DISTURBED SAMPLE FROM POWER. NG Ft.pft SAMPLE NOT RECOVERED . IL NATURAL WP CONTENT . •Z SPLIT SPOON •STANO PENE'TRP •ION SAMPL • • •..f • ti+ • 'V6 , . -7/l?. ' ETC. t KATE Tl1E NUMBER OE: 81.17WS PER DRIV N • DISTANCE IN INCITES U 51NG A • 39 p1., DROPPED IS INCHES. (PaR.TER SAMPI'4S) • ' SPLVT SPOON 1310W couN T ; I4P QROPPED • 30 ltyCHES . , '° a l t;•.: IB.O. GRAY S11DY 19.5 MED, SAND WITH OCC. •'p E GRAVEL • • • RS • ,3m 66/6 • PLAN. anc LOGS •' of r vn1 t'1D A"T' :. • • X. • • STRATA SAMPLE DEPTH NO. CNCM BLOW COUNT STD. • DESCRIPTION OF MATERIAL WATER LEVEL PEN. COMPOSITION CONSISTENCY MOISTURE COLOR • • • 6• � 12 ' 16" 2iti 361 P 5 r 66 " 66" 72s • • ' . _ • � • � ) A ubL :1? 1 TURNNINAJI. S 11'RIF • /'TWIST si LT Li, trN t, t rrLt- S/}kh 7 - 0 ` I • 60 fivW 6 I. PTN. 12 • • 8 - MIr01gM . S f1F KSC • ' 78" ` ' P3 son 50 4 ID� 96" 10 109" ! • — x 50+ tiAan 3v7 iv L id P — Sot NAaP ? • Nor 251ti. IuAMM ER • • Et mew DRO • • 13/*"0 TIP • Mo r(? — 2 I iJ 5 S /0 • . AAC.K 11QC 1z'xt AAVA TION Da 7.241 PROJECT SEATTLE ENGINEERING DEPARTMENT MATERIALS LABORATORY LOG OF TEST BORING DATE — a 90 - aeZi Pit .2) 5410- C L DnR RIvt. A PI PIsums Y' Pnorticwom GRD. ELEV. LOCATION 20� S IO 6 � � r � ,k � ATLiltMpfN A BiDEiT II,r FROM ro /I Ole SiOPG' �A EIot 3 /-c 's eIStI4VON t rgle.t S INSPECTOR JON MARSH HOLE NO N N i STRATA DEPTH ri; SAMPLE NO. stow COUNT STD, DESCRIPTION OF MATERIAL WATER LEVEL PEN, COMPOSITION • . CONSISTENCY MOISTURE COLOR • fly 3' , sal 6 It tI.Y MI . • • . . ' MOtt:T aOCsr . . u r • L. B R..., 0 t_�cs HOIST ;. 1 1.14`IL'Rt D DRY TO t4/ITN 5 NV) Y Stt.T St. PO 4 sl;a?ts /JOIST • NUM — z c to5' N /■ 14 it i . 5' • BoT • CB 7.141 DATE 1 "- 8 - Q O PROJECT C ATTLE ENGINEERING DEPARTMENT MATERIALS LABORATORY (. LOG OF TEST BORING [jri,j P tr *•Z ) • 1t/D - C.t_=DAR RIV1r1 PIPMINV - I PROTtutO,v INSPECTOR • HOLE NO. JON MARSH oxt GRD. ELEV. . LOCATION ""k Z- s it E /0 kt 15470 10' 'k d O t' l.: 3 4P $t,OPC: SAMPLE STRUCTURE W S N SOIL DESCRIPTION , i 1 . ° 1V'Hid30 ev,.a11Iec . ' • WATER CONTENT.% 29 49 °0..., • PIEZOMETER DATA Top elev. riser A 94.7' Top elev. riser B 94.6' 'Ft` 1 °$ k7. . Hord,proy, fine sandy SILT (ML) w/thIn r tine,sond seams a layers of clayey slit P. •. 'f. • 11 21 • • r J� 10 20 to 20 10 20 �! J 10 3I 4 1 20 . • " `•-'' B • 4 61 • • : • ! A •-----Th. Gray- b rown, silty f ine SAND Hard, gray, clayey SILT(ML B CL) d sandy SILT w/t Ins sand. • • Bottom of boring 71 a! 40 91 IOJ 60 60 70 eo So 100 110 120 i 130. • • , , I. 1' 1 •t A • t . . • • • • ' - - I. f ✓� Much 31,11ee w- S• -4eee SHANNON S WILSON TUKWILA INTERCHANGE AGREEMENT V- 717 SUPPLEMENT e 3O' SUMMARY OF FIELD .a LABORATORY DATA BORINGsNO. E3 1_• • srow 102 +70 offset 66 R E1iv. 94.6 FIG. 3.30 SAMPLE STRUCTURE E W 3 N J SOIL DESCRIPTI■A r ' • I VH1d3G cvs ( • WATER OONTENT,% . 29 49 80 l PIEZOMETER DATA` Top of riser elev. 106.7' JAN FEB MAR Stiff, tan to brown, clayey, sandy SILT vf/tra a of I 2 3 10 4 3 s T 20 It 9 10 • II 1 30 13 14 13 . 40 50 GO To 50 90 100 110 120 130 • • • • ~ 0 l0 2b _ l0 7A 10 20 Very stiff, pprraay, layered, silty CLAY(CU. clayey SILT (ML.1 and silty SAND ISM) vl/ zones of fractures and sfickensides, pockets of sand of tlnearIin s and pockets • Bottom of boring 125• 23• u • • r • • er`• — �• I f y �I -� 15%..13°L--.1 C . • • • • 2Z.� 13• •••••-w—. • • • . ' . •� - ---44—'—}1—. - • . • • • • • • • - • - • MNOA SI, Ifes . • W- e4 •Iese SHANNON • WILSON • TUKWILA INTERCHANGE AGREEMENT Y- TI) SUPPLEMENT • SUMMARY OF FIELD A LABORATORY DATA BORING : NO. 23 ,,.,. 3 -1" sto.W 99410 O 95 Etev, 106.7 FIG. 3.32 I t50 IS0 0` 230 200 ISO 100 50 5.tS0t• Se Aee.m.Ilwits of ma slide sere SAND 8 GRAVEL FILL 53111 -. S. H (S4 1864 Fine to msd.SAND8GRAVEL very stit n a 19 S3 Y Dark graY.silty SAND Hard. gray, sandy SILT • • • saelsMdie 2.315.66 F _-i _ ip-rA 43rd A..S. 238 Sandy SILT ra... ltns ro medium SAND" DH-7A 28 2A SoS64 S5 Brorrktlaysy WLT Gray•cy SILT w /50nd11 homes i SL PROFILE 5 ' — W102+70 -- 7 l Massive gray. clayey SILT Laminated, gray SILT w /line sand Dense, gre' (Ine'maad sANe —. ate growl ~' 6 W I05 +20 • hard, ItUMM•••• . • W Line M clayey SILT ' r graydayeySILT St L Line • 250 200 I50 100 50 0 ar ea• 2 Mass - PreeesedAUse set - A Line _ 235 16 SCALE. feet TUKWILA INTERCHANGE AGREEMENT Y --713, SUPPLEMENT 6 250 200 Om '0 0 'SO 100 LSO 200 GENERALIZED SOIL PROFILES NO. 5 & 6 n lE t r Nerd, gray, clayey to sandy SILT et al etenslde c aaad; S/LT Den N.Oroy SAND Gray, fine to medium SAND Groy eatyp(TILL) T111-like structure •150 Tan re " fine to mad. UM) Hard, grey, clayey SILT SAND &GRAVEL r � —r DH-8A 53n 1.16.4S. Lin .luw.196 = G bo.n,ft SAND 238 , Cr aw elo NOTES L Soil conditions shown between borings are an interpretation of the data and do not neces- sarily represent those actually present. 2. Water levels shown Ste far 2 -15 -66 except . as noted on the profile. DH -3A IA IB GUM euega Gray, sandy Ito clayey S'ILT.„. ft T Getty, layered I SAND S SILT Gray, fine SAND t . PROFILE 3 W 97 + 53 Sandy S l Stied, sI Gear clayey SILT d � ' _, 7 d W LMe cut 232 Laminated, gray SILT with fine sand Dense, gray. fine te....dt SAND \ Gro II jay ........ J a 233 Sryj r Da -..-____,... ense, sin f. St ..... SAND `_ !a � ' Very dense SAND Hard,groy,clayq SILT W Line 4 1 2 - + 8T , A Li Dsnee,gray- brown,sondy SILT Browny clayey ?SILT Gray, clayey SILT with sand lenses t � DH- 1954 A Line Lw Line S-5 • . W Line GIP 0 20• 200 z 0 rear 2 pens - 231 15•Groy, sandy SIL Silty SAND + ray, clayey to sandy SILT • A Line r TUKWILA U41 AGREEMENT Y - T13. GENERALIZED S NO. 3 MARCH 31. DU SHANNON & so.,. reo•rece a POUF • . TTLE ENGINEERING DEPARTMENT " MATERIALS LABORATORY LOG OF TEST BORING C8 7.111 STRATA I- N DATE I) ` 1 o PROJECT S W D - Ce R r %AER PI P t: LINE # Poorecnom LOCATION 20 d 1 S/0 ^- 60,116 .tiJmrvR 114.,, kit 36' &ML Asi1#41..r Atot: Rona ( 53 DEPTH SAMPLE N0. 511 10- IS- 20 2S 30 80H 31' R C. D 2 11 BLOW STD. COUNT PEN. Ae:GtSS Plr *31 DESCRIPTION OF MATERIAL COMPOSITION CONSISTENCY MOISTURE RL.OGkY SrPLlGr14RI; v� IZY VkRy 2 3 SR/ wtrlf LIWLLr d1 LT LOOSIz MOIST 4 NI? I Law 6,RAVI (TIP- 6RA1 t11.T, STRRTI F!LiD NOM- PL14Sne+ JD 1_L7 SILT WITH Oc.RS10N! . VERY VAR sn FF 110167 VEERY FINti SAND THIN .S 4,j A w1 L.IrrI.Ls SILT • WLT VERY 9 rf} 27.12." - 5TRA F/tia Not4 -PLA srv_ StiFr rtol'J slt_r wfGRAVr -tty 5RNt1 SLRf Arlo FIHtT shkn Pitarl u6S S TRAT I t-1Cr'D /J RPlR NOM PLASTIC sl 6RA01N6 TO 11 '?_Z 3 � NARD VERY Feuer 5AND6104t40 STRB rIF•00. I' MOIST To Vi HOL T HOLE NO. GRD. ELEV. COLOR BI.P STRUGTURL" _Thu /t V �R� � 8ROwxs 2. 2 . LI- SRAi 0 Lui rH LIWL.tr $14T LoOSl:' MP /ST Re =ns 'vitro . • a f7tAl 0 SWIRLS ° c Q 11 -s - -9v - 11 -2 - 90 0 B ROII4V o GRAY TS i • WATER LEVEL • we TN T'v°' o • GRAY 'INSPECTOR Jo W M ARS H GRAVUL. PAt lG EDUCATION RESUME Albert C. Rice June, 1964 B.S. degree in Civil Engineering Utah State University, Logan, Utah June, 1978 Master of Engineering, Geotechnical Engineering Utah State University, Logan, Utah LICENSE • • . Professional Engineer, State of Washington, License No. 12361 TRAINING 1. Wave Equation Seminar on Pile Driving, 2 days, February, 1977. 2. Drill Shaft Foundation Seminar, 2 days, November, 1979. 3. Fundamentals of Deep Foundation Design, 40 hour course, University of Missouri, November, 1980. 4. Construction Claims, 2 day Seminar, Battelle, October, 1983. 5. Hazardous /Toxic Waste Management, 2 day.Seminar, Washington State University, October, 1987. EXPERIENCE June, 1984 to Present Plan, coordinate and direct the functions of the Materials Laboratory including materials testing, investigation, quality control and materials research. Supervise materials engineering in project development, construction and maintenance. Review and approve materialf.o design reports. Contract for and schedule commercial testing and inspection services as needed. Supervise research.into new methods, techniques, processes, materials, instruments and equipment for improved construction, maintenance and inspection of public works projects. Supervise soils engineering work for Seattle Engineering Department. • -J Page 1 September. 1980 to June, 1984. Associate Engineer. Seattle Engineering Department Assigned to Corps of Engineers, West Seattle Freeway Bridge Project, Foundations Section for: 1. Inspect and monitor contractor operations related to foundation construction (e.g. pile- driving, tie -back retaining walls, soil densification), to assure contract compliance with plans, specifications and safety regulations. 2. Interpret plans and specifications, review test data, perform engineering studies and make recommendations related to foundation /geotechnical engineering problems encountered during construction. 3. Train and closely supervise a staff of four subordinates involved in inspection and monitoring of foundation construction. 4. Monitor, . coordinate and review work by Consultant. August, 1975 to September. 1980. Associate Engineer. Seattle. Engineering Department . 1. Engineering design and preparation of contract plans and technical specifications for upgrading of Seattle's major water distribution reservoirs. 2. Hydraulic design for the new Riverton Heights Reservoir including preparation of plans and specifications for piping, overflow structure, valving and telemetry controls. 3. Hydraulic network analysis for development •of recommended improvement required to upgrade existing pipe distribution networks to the present fire code-- Water 61 and First Hill watermains. 4. Consultant selection and supervision for: (a) Tolt River Slide $ 23,000 (b) Tolt River Dam Safety Study $245,000 (c) Reservoir Seismic Analysis $200,000 5. Special Studies: (a) "South Beacon Reservoir, Subsurface Investigation and Groundwater Study" to determine cause of excessive leakage and slope failure and to recommend alternate solutions. Page 2 (b) "South Beacon Reservoir, Selection of Membrane Liner" for reservoir rehabilitation. April. 1969 to August. 1975. Associate Engineer. Seattle Engineering Department Conduct and /or supervise soil and foundation investigations including- -test borings, lab testing, engineering analysis and reports for projects such as pipelines, tunnels; building, landslides, retaining walls, interceptor drains, transmission lines and landfills. Also, evaluation and inspection of construction procedures related to foundation. June. 1968 to March. 1969. Geotechnica Engineer. Terra Tec. Inc. Involved in design, manufacture and installation of field instrumentation, pneumatic piezometers, earth pressure cells, extensometers and settlement systems for various earth fill structures. Supervised the installation of Terra Tec equipment. June, 1967 to June, 1968, Assistant Engineer, Seattle Water Department Primary responsibility was development of Comprehensive Longrange Water Supply Plan 'for King County. Twofold purpose of study: analyze and project water needs within metropolitan area and present plan of development to meet this need. March. 1966 to June. 1967. Geotechnical Engineer. Shannon and Wilson. Inc. Conducted foundation investigations including field inspection, lab testing, engineering analysis, and reports. • • ...'DRA1`T MATERIALS /GEOTECRNICAL ENGINEERING SUPERVISOR • 7006507 Class Summary! • ' • .!! . Positions in this class, under limited supervision, supervise professional and technical staff in a Material$ Testing Laboratory which is responsible for: (1) testing and researching' of•'•materials in'Public Works construction projects to ensure compliance with applicable standards and specifications; and (2) geotechnical investigations'by the engineering design division or other City departments. :priva: ^ 'Distinguishing Characteristics of the Class: This is a first -line supervisory in the Materials Engineering Group. The Materials /Geotechnical Engineering Supervisor is responsible for buc.get management, quality control' assurances and over all program administration for the :rste=_als laboratory. This class has full supervisory responsibilities over subcrd_ rate Engineer and'Specialist positions in addition to the Materials /Geotechnical staff. Knowledge of materials engineering testing and standards applicable to such tests, geotechnical engineering andix'westiga:ionS,' Soil mechanics and various types of testing 'equipment :s Requires - ability to supervise professional employees: • .. ";• r.r.'! to C• '.~r!t (:'r a ':mbi.-'j' . c! ?. le_ ican Society of Testing Materials Manuals ;' • ' Transportation Standards and Specifications and State Construction Manuals are available for directing the testing of materials. • Employee in . this class is responsible 'for establishing: and subordinates' priorities, deadlines and.resolving problems... Judgment is exercised in applying standards to unusual or complex situations'and when test results are marginal. 'Employee is expected to resolve most problems with only general supervisory direction. Supervisor seldom reviews work. . . t .. 1) ,I: 1 .. • i 4. r. 4 . i . 1., •.. C .••. ; .. • ,. • . . Typical contacts include,inspectors,. project.managers,,design engineers, contractors, consultants, and representatives from private testing agencies ' to coordinate tests and provide information on test results= and with product manufacturers, and suppliers to exchange information and coordinate.' tests. . .' . . Examples of Work: ' o Supervises and directs' the work of engineers, engineering specialists, and student' interns involved in testing of materials used in public works construction projects and conducting geotechnical investigations. . •• . ti Title: Materials /GeoteCnical Engineering Supervisor (: .;` Schematic Humbert 7006507 o Directs the planning, scheduling, and coordinating of work of Materials Lahora :or; staff. •∎•' :i•. • ... :as!•t 1!Tic . • ... c Approves /disapproves materials and tests used on public works projects. o Provides input /consultation to design engineers and project managers in various departments. rir• 1 !t' ` { R 7►!' i �t';'t r ' ti. ! . t +... n ': o Reviews technical•specificationst• :consultant reports and contractor submittals related to materials and geotechnical engineering issues. o Prepares and administers budget for the Materials Laboratory. o Contracts for and monitors commercial testing and specialty inspection services. :. o Performs other related duties of a comparable level /type as assigned. : Vf•5!! •i•i•r• 31 1 • Ar%colci .t••? F. tr•.Y !.. • Work Environment /Physical Demands: *•:•i • :•! ':1 c M.: s: ::crk .s perfc•rr.ed in. a laboratory environment. ,• : ;! :; . Minimum Qualifications: r . ' • ....t :r :r+: erg r':;t:i R:.,rJ {.- ,. •4. r .;..! „ !., •, Requires a batchelor's decree•in Civil;'Chemical :•• or Mechanical ' ' Engineering, or closely related field•ard five•years of. professional•level work in engineering materials"testing and' research (or a combination of education and /or training and /or experience which provides an equivalent background required to perform• the work .of. the ;class) .• t : I.::•{ t: . Licensing and Other Requirements:..•;'.• Registration as a Professional Engineeriin the State of Washington. Comments: R °• { , i.tt,k3 ;. 4. t: t,h Lee, r'_ct'NL• ✓ , �•� �fi i <�tiv :` �t'p4r�'G ' •i�lt�i�'. :. � • i`lis�7(M11.hi w'! r� ; i. • This description was prepared to indicate the kinds of activities and levels of work difficulty, required of positions in this class. It is not intended as a complete list of'specific duties and responsibilities. , r! • •:r s elf3 :•i :; i..� t : •'. • 4:.1 t•%7.1 t l:i,� i f; x• :i : . t• . � Class History: ' ' • • : ;:li,'• • '. ... ,e9tch+tn,i4 !tit inn and •ot :In r t.1'. Materials Engineer, Sr., 06203 •"':i; Class adopted January 2, 1991 ' . t••.: •9 • • !• *Kirk :. . t9t: , ' t.tlt =.fi'r: , e;.i•" ^f` is 4 . / • • . °•' :i: 1.'. ,.tK .int•.I.vo.. In 'ilt7.!'r'o . t•: ls:* n • 1, •.. • .•1 • i.t-, := •,;nn• r 'r i ytiil'to. .t.1;t 2 City of Seattle Executive Department -Office of Management and Budget Andrew J. Lofton, Director Norman B. Rice, Mayor November 8, 1990 Rick Beeler City of Tukwila 6300 South Center Boulevard #100 Tukwila, Washington 98188 Re: Cedar River Pipeline #4 Protection This is to certify that the City of Seattle is self - insured for all incidents. Should an incident occur which is deemed to be attributed to the negligence of the City of Seattle, self insurance would apply. L ONARD H. BOIS Risk Manager STATE OF WASHINGTON COUNTY OF KING LHB /nct )ss ibed and sworn (affirmed) before me this /3 da o 1990. cc: Liz Stanton, Water Management, SWD Office of Management and Budget 300 Municipal Building Seattle Washington 98104 (206) 684 -8080 An equal opportunity employer "Printed on Recycled Paper NOTARY : BLIC in and for the State of . shington Seattle Water Department Robert P. Groncznack. Superintendent Norman B. Rice, Mayor November 5, 1990 Joan Hernandez 6200 Southcenter Blvd Tukwila, WA 98188 RE: Waiver of Grading Moratorium Dear Ms Hernandez: As provided by Section 3.E of Ordinance 1550, The Seattle Water Department wishes to petition the City Council of the City of Tukwila for a waiver of the city's moratorium on development in environmentally sensitive areas. A waiver would be required to perform grading for the protection of the Seattle Water Department's Cedar River Pipeline #4 at Southcenter. In response to a break which occurred on the Tolt River pipeline in 1987, the Seattle Water Department is engaged in an ongoing process of examination and assessment of the concrete cylinder pipe in it's water supply system. An investigation was recently made of the portion of the 60 inch diameter Cedar River Pipeline #4 beneath 1 -5 near Southcenter. This segment of the pipeline is of particular interest because it was installed previous to the construction of I- 5. In some areas the pipeline is overlain by as much as 35 feet of structural backfill used in achieving the final I -5 grades. Although the design work done for I -5 attempted to account for the effects of backfill on the pipe, it is apparent that highway construction has had some impact on its structural integrity. Seattle Water Department— Dexter Horton Building, 10th Floor 710 Secona Avenue. Seattle, Washington 98104 NOV 12 1990 Joan Hernandez November 5, 1990 Page 2 The analysis consisted of review of original suppliers data, structural calculations, and a physical examination of the pipe interior. The results of that effort are documented in a report being prepared by our consultant, CTL. The physical exam in March 1990 indicated that in some locations the pipe is undergoing deflections to the cylindrical shape. These deflections are the result of vertically applied static loading vs. lateral support provided from backfill. Actual deflection exceeds allowable design limits under the deeper freeway fill sections and cracking of the mortar lining has occurred. Weakening of the steel pipe structure due to water infiltration at the cracks is a likely consequence of the deflection which was observed. Our evaluation concluded with the decision to proceed with protection of the portion of the pipeline which runs beneath the Tukwila Interchange. Approximately 1200 linear feet of 54 inch inside diameter steel pipe is to be inserted inside the existing pipe. Access to the pipe will be through three pits as shown on the accompanying vicinity map. In addition, a 130 -foot long 12" service line will be installed to restore an existing water service to the City of Tukwila. Moira Bradshaw of the Tukwila Department of Community Development has informed us that the slope on the west end of the project where access pit #3 is located is of special concern to the City. We have thoroughly researched the available reports on this area and are performing additional geotechnical borings in support of the excavation permit. The amount of excavation required for the access pit will be limited in scope and will involve less than 200 cubic yards in a soil volume of approximately 15 feet square by 15 feet deep. The soil to be removed is non - native structural backfill which was placed as part of the installation of the original pipeline. We believe that the slope will generally support the construction anticipated but are prepared to ensure the maintenance of slope stability. To maintain the reliability of the water supply system, it is imperative that the project, in its entirety, proceed during off peak periods of the year, i.e. not between May and October. Construction is scheduled to occur during January and February of 1991. In our professional judgement, the most prudent course of action is to proceed with the proposed work as described to avoid potential disruption to the water supply system. Joan Hernandez g r November 5, 199 Page 3 In support of our waiver request, I have enclosed the SEPA Determination of Non - Significance for the project as well as project plans and specifications in their entirety. Please contact the Project Manager, Les Nelson, at 684 -5919 if you have questions or require additional information. I would also appreciate knowing the schedule for your review and any dates we might expect to appear before the City Council. Sincerely, WALTER F. ANTON Chief Engineer Water Management and Engineering WFA:ees EES /tukexc Enclosures cc: Jay Laughlin, Assoc Env Analyst Les Nelson, Assoc CE 12/04/90 08:57 MEMORANDU SENT BY: PHONE NO: 6 FAX COVER SHEET crtm-rfari 4 444 TUK W RKS M VO " TRANSACTION D TE: TIME: TOO MIKA FAX NUMBER: (206) 684-4631 TOTAL NUMBER P PAGES: 5 NAtrkvtt'i CeAreir_ 'Owe • TO: CA11 - 1\-A<•^At-e■ FAX NO:1St-VAS ATTN: tACAN4 1:4146A*AN4 COMMENTS: sir_ L-01.1.4- kw ticoM, t4 %tow Ai) 014 \Atm* k NAVE. fr Jib Mart oF fl ta 1 tserePtC0 lb S. Aril SPY' 'MM. t4 th1147t1S OP - MC ValeVVR. flu 'MOAN Crto p 'Wm V1.-03-40 ct iricA- i06 411 001 City of Seattle Executive Department -Office of Management and Budget Andrew J. Lofton, Director Norman B. Rice, Mayor November 8, 1990 Rick Beeler City of Tukwila 6300 South Center Boulevard #100 Tukwila, Washington 98188 Re: Cedar River Pipeline #4 Protection This is to certify that the City of Seattle is self - insured for all incidents. Should an incident occur which is deemed to be attributed to the negligence of the City of Seattle, self insurance would apply. L ONARD H. BOIS Risk Manager STATE OF WASHINGTON COUNTY OF KING LHB /nct )ss ibed and sworn (affirmed) before me this /.3, da o 1990. cc: Liz Stanton, Water Management, SWD NOTARY BLIC in and for the State of . shington Office of Management and Budget 300 Municipal Building Seattle Washington 98104 (206) 684 -8080 An equal opportunity employer "Printed on Recycled Paper" The'City of Seattl Seattle Standard S Construction) City of Seattle St Construction 1986, "Traffic Control M September 1, 1987 junction with the Streets and Highwa Department of Trans Washington State De Permit No 14649, s +-04 TUK PUB WORKS Q003 ( 7► p•c•C 0,116100. RIVER PIPELINE 14 PROTECTION PLANS AND SPECIFICATI The CEDAR RIVER PIPEL NE 14 PROTECTION improvement together with incidental work in co nection therewith shall be done in accordance with: . The Superintenden of Water Plans, Drawing No. 120 -23, Sheets 1 to 9. Standard Specifications. (1989 City of ecifications for Road, Bridge, and Municipal ndard Plans for Municipal Public Works Eleventh Edition. nual for In- Street Work, Seattle, Washington, which supplements and is to be utilized in con - Manual on Uniform Traffic Control Devices for (MUTCD), 1978 Edition," as published by the ortatlon, Washington, D.C. artment of Transportation (WSDOT) Franchise e Appendix. City of Tukwila Con truction Permit No. , being acquired by SWD. Washington State Department of Wildlife Hydraulic Permit No. , being acquired by SWD. iver.to City of Tu wile Grading Moratorium, being acquired by 3WD. ity of Tukwila Exca ation Permit, being acquired by SWD. =tract from City o Tukwila Noisd Ordinance, see Appendix. this Project Manual. LEGAL RELATIONS AND RESPONSIBI Except as provided for otherwise herein ncluding Change Order Work, shall be the '.ontractor until the Acceptance Date. lestruction of, either permanent or temporar naterials, or equipment and plant shall b eplaced by the Contractor, at the Contra egardless of the cause of damage. ' Exceptions to the above shall be limited e )slowing•. (1)A part of the permanent Work pert Contractor which is damaged by earthq other act of God, or by slides occurri slopes before final acceptance of the however, that this exception shall no damages be by reason of the Contrac comply with the Contractor's contractual or to perform sound engineering an practices in the conduct of the Wo reasonable precautions under the circum (2)Third party damage or vandalism occ Actual Completion Date. r 'S TO THE PUBLIC (5) Disqualification of a bidder, contractor, aibcontractors or other business from eligibility for pro ding goods and services to the City for a period not to ceed two years. No contract shall be awarded to any n or business which is disqualified from doing busin as with the City pursuant to SMC 20.46 or similarly d squallfied from doing business with another governmen agency based upon a failure to comply with WMB requirements substantially the same as SMC 20.46. 1.07.13 CONTRACTOR'S RESPONSIBL FOR WORK AND DAMAGE fter, the Work, ole risk of the amage to, or work, utilities. corrected or tor's expense, lusively to the rmed by the e or flood of g on finished ork; provided, apply should or's failure to esponsibilities construction k, or to take ces. ring after the Damage qualifying under the exceptions lis d above shall corrected promptly when ordered by the ngineer, and tmpensation therefor shall be made at the nit Bid Item ices, if applicable, and as extra work if not. Where public fety is affected and an emergency exists, the Engineer may :et to accomplish repair by means of Owner p ' vided forces. )thing contained in this section shall be onstrued as lieving the Contractor of responsibility fo , or damage suiting from the Contractor's own operation • or from the intractor's own negligence, nor shall the ontractor be lieved from full responsibility for making goo any defective unauthorized work. The Contractor shall bear sole responsibility or damage to operty located off the Project Site cause by erosion, tation, run -off, or other related cause during the natruction of the project and for any pollu on of rivers, earns, ground water, or other waters which y occur as a ;ult of construction operations. )7.14 INDEMNIFICATION The Contractor shall defend, indemnify and ve harmless Owner and its officers, employees and agen s from every im, risk, loss, damage. demand, suit, ju gment and gney's fee, and any other kind of expense n account of try to or death of any and all persons, or account of perty damage of any kind, whether tangible r intangible, loss of use resulting therefrom arising out of or in any nner connected with the Work performe under this itract. or caused or occasioned by reason of th presence of property, or an officer, employee or agent f either the itractor or a subcontractor upon or in pro miry to the arty of the Owner, at any time before the Acc trance Date. I the claim, suit, or action for injuries, death, r damage is ed by or results from the concurrent neg ce of (a) the tractor or its officer, agent, or employee and ) the Owner 33 A 1.07 or its officer, agent or employee, these indemnity provisions shall be valid and enforceable only to the extent of the Contractor's negligence. The Contractor shall also indemnify, defend, and save harmless any county, city or district and the officers and employees of said county, city or district connected with the Work within the limits of which county, city or district the Work is being performed hereunder all in the same manner and to the same extent as provided above for the protection of the Owner and the Owner's officers, employees and agents provided that no retention of money due the Contractor will be made by the Owner except as provided in RCW 60.28, pending disposition of suits or claims for damages brought against the county, city or district. 1 -07.15 TEMPORARY WATER POLLI.TI'ION /EROSION CONTROL Temporary water pollution /erosion control work shall consist of temporary measures which may be indicated in the Contract Documents, proposed by the Contractor and approved by the Engineer, or ordered by the Engineer during performance of the Work. This temporary work is intended to provide prevention, control, and abatement of water pollution /erosion within the limits of the project, and to minimize damage to the Work, adjacent property, streams, and other bodies of water. The Contractor shall coordinate temporary water pollution/ erosion control work with the permanent drainage and erosion control work that may be specified in the Contract Documents to the extent that effective and continuous water pollution /erosion control is maintained during performance of the Work. The Contractor is hereby notified that compliance with these requirements may necessitate performance of certain items of work at a different time or in a different manner than has been considered normal construction practices in the past and that such revisions in scheduling of Work may interfere with said normal construction practices. Therefore, if required by the Contract Documents, the Contractor shall, before starting the Work, submit to the Engineer for approval an effective temporary water pollution /erosion control plan. The plan shall show the scheduling for permanent pollution /erosion control work and for temporary erosion control measures the Contractor proposes to take to prevent water pollution /erosion due to the Work on areas within the limits of the project or on other work areas outside the Project Site, haul roads, and upon adjacent property, streams, and other bodies of water. The Contractor shall not perform clearing, grubbing or earthwork on the project, other than that specifically authorized in writing by the Engineer, until the plan has been approved. The Contractor shall revise and bring the plan up to date whenever the Engineer makes written request for revisions. The Owner will not be liable to the Contractor for failure to approve all or any portion of an originally submitted or revised water pollution /erosion control plan, nor for any delays to the work due to the Contractor's failure to submit an acceptable plan. The Contractor shall allow the Engineer not less than 5 working days for the review of a submitted or revised plan. When the Engineer determines that water pollution/ erosion is likely to be a problem, clearing and grubbing operations shall be so scheduled and performed that grading operations and permanent erosion control features can follow immediately, If the project conditions do not permit this scheduling, temporary water pollution /erosion control measures shall be taken between successive construction stages. The area of excavation, borrow, and embankment operations in progress will be limited commensurate with the