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HomeMy WebLinkAbout10 Strander Boulevard SS Alternatives Memo Draft 8/2/18 Memorandum Date: 2 August 2018 Subject: Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 A18.0085.00 From: Marcia Medina, PE and Jon Corkery, PE To: Steve Carstens, PE, City of Tukwila (City) Route To: Mark Lampard, PE, King County Wastewater Treatment Division (KCWTD) INTRODUCTION The primary objective of the Strander Boulevard/Southwest 27th Street extension is to provide a vital link for freight, transit, passenger vehicle, and non-motorized traffic to move from east to west between the City of Renton and the City of Tukwila. The entire project is proposed to be constructed in three phases. Phase 1 extended Southwest 27th Street from Oakesdale Avenue SW to Naches Avenue SW and was completed in 2006. Phase 2 created a grade separation undercrossing at the Burlington Northern Santa Fe (BNSF) railroad and extended a two-lane roadway with a single 6-foot sidewalk from the intersection of Naches Avenue SW to the Tukwila Station access road. Phase 2 was completed in 2015. The Strander Boulevard/Southwest 27th Street Extension Phase 3 will complete the east to west connection by constructing a second grade separation undercrossing at the Union Pacific Railroad (UPRR) tracks, constructing a full five-lane roadway and a shared-use path from West Valley Highway to Naches Avenue SW. See Figure 1 for project phasing. Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 2 August 2018 Page 2 Figure 1 Project Phasing The roadway corridor extension will begin descending below existing grade just east of the intersection of Strander Boulevard and West Valley Highway to provide a minimum of 16.5 feet of separation from the bottom of the new UPRR bridge and the surface of the new roadway. The new roadway will descend below the high groundwater table in order to achieve the clearance at both the UPRR crossing and the BNSF crossing. Secant pile walls and a concrete bottom seal will be used to create an essentially watertight structure for the portion of roadway located below the high groundwater table. A variety of other wall types will be used to achieve the required separation from existing grade once the roadway is above the regional groundwater table. The lowered roadway will displace both City and KCWTD sewer mains, British Petroleum (BP) petroleum oil pipelines, communication lines running parallel to UPRR’s tracks, the Interurban Trail, and driveway access for Puget Sound Energy (PSE), Jack in the Box, Taco Bell, and Tukwila Station. The relocation of all of these elements will be included in the scope of the Strander Boulevard/Southwest 27th Street Extension Phase 3 project. Driveway access for PSE, Jack in the Box, and Taco Bell will be combined into two single-shared driveways north and south of the lowered road. A looped overpass and new signal will be created to provide access from the Tukwila Station to Strander Boulevard. A new pedestrian bridge with ramped approaches will be constructed over the lowered roadway to continue the north to south connection of the Interurban Trail. See Figure 2 for Phase 3 improvements. Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 2 August 2018 Page 3 Figure 2 Phase 3 Site Map SANITARY SEWER MAIN RELOCATION DESIGN ALTERNATIVES After reviewing the available survey and as-built drawings, BergerABAM met with KCWTD to discuss project constraints. Based on preliminary modeling by KCWTD, the proposed sewer pipe size is shown at 48 inch diameter. KCWTD requested all saddle manholes be a minimum of 96 inches in diameter. KCWTD also requested that all sanitary sewer main relocation options rely on gravity flow only. The three sewer replacement alternatives developed by BergerABAM, as previously presented to KCWTD, are shown in Appendix A of this memorandum and are briefly summarized below: • Option 1 – Construct a new sewer alignment around the southern and eastern sides of the lowered portion of Strander Boulevard. The road grades increase to the east such that the sewer alignment can easily be constructed under the new roadway. • Option 2 – Construct a new sewer alignment though the lowered portion of Strander Boulevard. The new sewer would penetrate wall systems on either side of the new road and would also pass through the groundwater seal beneath the roadway surface. • Option 3 – Construct a new sewer alignment around the western and northern sides of the lowered portion of Strander Boulevard. Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 2 August 2018 Page 4 The exhibits for the three options typically show the minimum spacing or maximum achievable spacing between gas pipes and sewer. A detailed description of each alternative alignment is presented below: Option 1 Alignment Description Option 1 replacement begins at the existing 36 inch main, approximately 200 feet south of Strander Boulevard on City property. The new sanitary sewer pipe alignment would be built through the north end of the City’s stormwater pond parcel and would continue east under the BNSF rail bed. A jack and bore type installation would be required to pass under the BNSF tracks to the Kaiser Permanente (KP) property on its east side. After crossing the rail bed, the alignment would turn north and east through the KP parking area before turning north again and crossing under Strander Boulevard with sufficient cover at a location where the road is no longer below the surrounding grade. The new pipe will be constructed below the water table and will require a substantial dewatering effort. Based on preliminary recommendations from the geotechnical engineer, Shannon & Wilson, the northwest corner of the KP building could experience 1 to 3 inches of settlement. Settlement mitigation efforts could include staged dewatering, continuous sheet piles along the utility alignment, and/or ground improvement to increase soil strength and reduce seepage. Option 1 may include a sub-option, Option 1B, of the replaced main in the same alignment as discussed above, but continuing for approximately an additional ¼ mile to the east before connecting to an existing 72” sanitary sewer main in Oakesdale Ave SW. This sub-option would provide the county a significantly greater length of replaced main and additional capacity in the pipe. The county has mentioned that they may favor this longer solution and may potentially provide the funds needed for the additional length of pipe replacement. KCWTD had initially indicated that Option 1 would be their preferred route. Option 2 Alignment Description Option 2 improvements begin at the existing 36 inch main, approximately 200 feet south of Strander Boulevard and inside the PSE right-of-way. A new manhole would be set at the connection point and the alignment would turn generally north inside the PSE right-of-way. PSE’s corridor is 100 feet wide and currently accommodates two large diameter BP gas mains along the west side. There is a larger electrical transmission tower in the center and a longer narrow wetland on the east side. The new sewer main is currently routed on the east side of the tower, but could also be placed on the west side, provided there is adequate clearance from the tower’s foundation elements and the BP gas mains. Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 2 August 2018 Page 5 Based on preliminary information provided by PSE regarding the transmission tower foundation, the sewer’s nearest trench wall should not be closer than 20 feet from the centerline of the transmission tower’s foundation system. The Option 2 configuration provides this required separation. If the main is located on the west side of the transmission tower, a similar 20 foot sanitary sewer pipe clearance from center of tower would result in an approximately 20 foot separation from the existing BP gas pipes. Once past the transmission tower, the proposed main would continue north to Strander Blvd. KCWTD does not want to route the sanitary sewer under Strander Blvd with a siphon. This option will require pipe penetrations in unreinforced sections of the secant pile walls on either side of the roadway. The pipe will pass through the top of the groundwater seal, requiring additional reinforcing. Once it has exited the roadway section, the pipe would turn east under the UPRR rail bed and connect to the existing sewer pipe on the east side. Work under the UPRR rail bed may be phased with construction of the railroad’s shoofly to avoid a jack/bore under the rail bed. Option 3 Alignment Description Option 3 improvements begin at the existing 36 inch main, approximately 200 feet south of Strander Boulevard and inside the PSE right-of-way, similar to Option 2. A new manhole would be set at the tie-in and the alignment would turn generally north inside the PSE right-of- way. PSE’s corridor is 100 feet wide, and currently accommodates a large diameter BP gas main along the west side, a larger electrical transmission tower in the center, and a longer narrow wetland on the east side. The proposed sewer main is currently shown on the east side of the tower, but could also be placed on the west side, provided there is adequate clearance from the tower foundation elements and the BP gas main. Based on preliminary information provided by PSE regarding the transmission tower foundation, the sewer’s nearest trench wall should not be closer than 20 feet from the centerline of the transmission tower’s foundation system. The Option 3 configuration provides this required separation. If the new main is located on the west side of the transmission tower, a similar 20 foot sanitary sewer pipe clearance from center of tower would result in an approximately 20 foot separation from the existing BP gas pipe. Once past the transmission tower, the main would turn west into the Jack in the Box property, turn north again, then cross Strander Blvd. At this location, the finished grade elevations of Strander Blvd will be high enough to avoid conflict with the sewer and will not require penetrating the groundwater seal or secant walls as in Option 2. The new pipe alignment would continue north through the east side of the Taco Bell parcel before turning east and crossing the PSE easement and UPRR property. Similar to Option 2, work under the UPRR rail Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 2 August 2018 Page 6 bed may be phased with construction of the railroad’s shoofly to avoid a jack/bore under the rail bed. Option Updates Subsequent to the development of the initial three options, both KCWTD and BP have indicated that they will consider sharing a trench to reduce costs as long as safety and maintenance concerns are properly addressed. BergerABAM revised the Option 1 and Option 3 concepts slightly based on input from KCWTD and BP. Refer to Appendix B for updated versions of Option 1 and Option 3 exhibits only. Option 2 was not modified and included in Appendix B. Please note that the revised options were not discussed in the alternative descriptions above and are presented to facilitate further discussion only. BP prefers re-routing their gas pipes in the alignment shown in Option 3. OPTIONS’ COSTS A rough order of magnitude cost estimate that includes all material, labor, and equipment was prepared for the three options using WSDOT unit bid prices. All subcontract prices are reflective of current bid prices. Escalation has not been included. An allowance of 20% for undeveloped design details and 10% for construction contingency has been included in this estimate. The total costs for each sanitary sewer relocation option are Option 1A $1,141,010 Option 1B $2,187,250 Option 2 $ 952,120 Option 3 $ 884,260 The detailed rough order of magnitude cost estimate is included in Appendix C. OPTIONS’ PROS AND CONS The three alternatives have been evaluated for criteria that include: cost, schedule, potential conflicts, sanitary sewer sharing a joint trench with BP gas, and impacts to businesses, rail, power, and wetlands. The three options’ pros and cons are summarized in Table 1 below. Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 2 August 2018 Page 7 Option 1 Option 2 Option 3 Cost Con - 1.14M (Option 1A), 2.19M (Option 1B) Neutral - 952K Pro - 884K Schedule Pro - no known major schedule challenges Con - Requires close coordination with pile/wall contractor. Short window to complete pile penetration work. Pro - no known major schedule challenges Conflicts BNSF, Kaiser Wall, groundwater seal, UPRR, PSE Restaurants, UPRR, PSE Business Impacts Con - will impact Kaiser parking area. Settling impact mitigation will be required and may increase costs above numbers listed. It is currently unknown how receptive KP will be to this option or to impacts in general. Pro - avoids impacts Neutral - will impact restaurants, but franchisees are supportive of project. May require additional costs for settling mitigation, but will likely be less than KP due to size of restaurants. Rail Impacts Con - requires jack and bore under BNSF - BNSF is otherwise not interrupted Pro - potentially installed as an open cut during shoofly sequencing Pro - potentially installed as an open cut during shoofly sequencing Power Impacts Pro - none Con - must shore to avoid impacts to transmission tower, maintain distance from conductors Con - must shore to avoid impacts to transmission tower, maintain distance from conductors Wetland Impacts Pro - no wetland impacts Potential Con - could impact wetlands depending on alignment Potential Con - could impact wetlands depending on alignment Table 1 Options’ Pros and Cons Based on the information provided, the City requests KCWTD recommend their preferred sanitary sewer relocation option. Memorandum Project Sanitary Sewer Improvements Project Sanitary Sewer Improvements Project Sanitary Sewer Improvements Project Sanitary Sewer Improvements –––– Alternatives Analysis MemoAlternatives Analysis MemoAlternatives Analysis MemoAlternatives Analysis Memo Strander Boulevard/Southwest 27Strander Boulevard/Southwest 27Strander Boulevard/Southwest 27Strander Boulevard/Southwest 27thththth Street Extension Street Extension Street Extension Street Extension ---- Phase 3 Phase 3 Phase 3 Phase 3 Tukwila, Washington Appendix A Sanitary Sewer Improvement Exhibits, Options 1-3 X X X X X T T T S S S S X X SD S D S D S D S D S D S D P P PPPP P W WXXXX SD SDSDSDSDSDSDSDSD SD SDSDSD SD SD S D SD P X X X X X X X X X X X X X X X X X X X X X X X X X X X W W W W W W W W W W W W W W W W WP P P X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X S D S D SS SS SS SS SS SS S D G G G G G G G G G G G G G G G G G G G ALL STORM PIPES DRAINING HEREPER SURVEY IE'S. WHERE DOESSTORM RUNOFF GO? SUPPOSED TOGO SOUTH. W 100 101 102 310 P P 26" DECIDUOUS T P T P 20498 20499 20500 20509 20510 20511 20512 T J B JB JB 21773 21774 DECIDUOUS EVERGREEN CEDAR 20" DECIDUOUS 18" CEDAR DECIDUOUS 24" DECIDUOUS RRSG RRSG JB JB 31896 31897 31931 31932 31933 31935 3193731938 31939 31940 31941 31942 31943 3194431945 JB JB JB 2" DECIDUOUS2" DECIDUOUS2" DECIDUOUS PP 2" DECIDUOUS2" DECIDUOUS JB 30" DECIDUOUS CO 2" DECIDUOUS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 STRANDER BLVD B N S F IN T E R U R B A N T R A I L 15+00 20+00 U P R R SSMH #1 - OPT 1A, TYPE 2 - 96"RIM = 27.09EX IE (IN) 5.14 (36" SS S)IE (OUT) 5.04 (48" SS E)SSMH #3 - OPT 1A, TYPE 2 - 84"RIM = 26.00IE (IN) 4.83 (48" SS W) IE (OUT) 4.73 (48" SS N) 285LF 48" SS @ 0.02% SSMH #4 - OPT 1A, TYPE 2 - 84"RIM = 23.00IE (IN) 4.70 (48" SS S)IE (OUT) 4.60 (48" SS E) 164LF 48" SS @ 0.02% SSMH #5 - OPT 1A, TYPE 2 - 84"RIM = 23.00 IE (IN) 4.53 (48" SS W) IE (OUT) 4.43 (48" SS NE) 318LF 48" SS @ 0.02% SSMH #6 - OPT 1A, TYPE 2 - 96"RIM = 22.33 IE (IN) 4.40 (48" SS SW)IE (IN) 4.50 (36" SS W)IE (OUT) 4.30 (36" SS E) 186LF 48" SS @ 0.02% SSMH #2 - OPT 1A, TYPE 2 - 84"RIM = 26.88 IE (IN) 4.97 (48" SS W) IE (OUT) 4.87 (48" SS E) 210LF 48" SS @ 0.02%JACK & BORE UNDER BNSF G G G G G G G G G G G G G G G G G G G G G G G GG G G G NEW WALL ACCESS ROAD EX. WETLAND ROW (VARIES) 124' ROW 100' ROW U P R R P S E WETLAND WETLAND EX. WETLAND PSE TRANSMISSION LINE TOWER CITY OF TUKWILA STORM POND 2523049006 EX. 36" SS EX. 36" SS 0005800036 PSE 7300 S 163RD ST 2523049023 PSE 0886700270 RYAN-GHC TWO LCC (KAISER PERMANENTE) 0886700100 RYAN-GHC TWO LCC (KAISER PERMANENTE) 2523049087 SOUND TRANSIT P S E 100' ROW BNSF PARCEL 008670075 100' ROW RYAN GHC TWO LLC (KAISER) PARCEL0886700090 BNSF PARCEL 008670075 15' POWER ESMT CITY OF SEATTLE 30' OLYMPIC PIPELINE ESMT INGRESS/EGRESS ESMT TO SOUND TRANSIT 10' POWER ESMT PSE 10' METRO SEWER ESMT 10' PSE POWER ESMT 10' &4' METRO SEWER ESMTS 20' UTILITY ESMT 30' POWER ESMT CITY OF SEATTLE 15' UTILITY ESMT 10 ' 25 ' 10' 10'25' 10' 1 0 ' 2 5 ' CONNECT TO EX FUEL LINES CONNECT TO EX FUEL LINES REROUTED FUEL LINES La s t S a v e d b y : Jo n . c o r k e r y o n : Au g 2 , 2 0 1 8 1 : 2 9 P M F i l e : Q: \ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ D e s i g n \ S S \ U t i l i t y o p t i o n s . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1" = 40'feet 8040400 scale STRANDER BOULEVARD EXTENSION PHASE 3 SANITARY SEWER IMPROVEMENTS EXHIBIT OPTION 1A EXISTING GAS NEW GAS EXISTING SS NEW SS EXISTING OH POWER EXISTING WATER REMOVED / ABANDONED UTILITY LEGEND G G SS (WHEN PLOTTED AT 22" X 34") CONCEPTUAL OP W SS APPENDIX A X X X X X T T T S S S S X X SD S D S D S D S D S D S D P P PPPP P W WXXXX SD SDSDSDSDSDSDSDSD SD SDSDSD SD SD S D SD P X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X W W W W W W W W W W W W W W W W WP P P X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X S D S D SS SS SS SS SS SS S D G G G G G G G G G G G G G G G G G G G G ALL STORM PIPES DRAINING HEREPER SURVEY IE'S. WHERE DOESSTORM RUNOFF GO? SUPPOSED TOGO SOUTH. W 100 101 102 310 P P 26" DECIDUOUS EVERGREEN Evergreen T P T P 20498 20499 20500 20501 20502 20503 20507 20508 20509 20510 20511 20512 T J B JB JB 21773 21774 DECIDUOUS EVERGREEN CEDAR 20" DECIDUOUS 18" CEDAR DECIDUOUS 24" DECIDUOUS RRSG RRSG JB JB 31896 31897 31898 31899 31900 31931 31932 31933 31934 31935 3193731938 31939 31940 31941 31942 31943 31944 31945 P JB JB JB 2" DECIDUOUS2" DECIDUOUS2" DECIDUOUS PP 2" DECIDUOUS2" DECIDUOUS2" DECIDUOUS JB 30" DECIDUOUS CO 2" DECIDUOUS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 STRANDER BLVD B N S F IN T E R U R B A N T R A I L 15+00 20+00 SSMH #1 - OPT 1B, TYPE 2 - 96"RIM = 27.09EX IE (IN) 5.14 (36" SS S)IE (OUT) 5.04 (48" SS E) SSMH #3 - OPT 1B, TYPE 2 - 84"RIM = 26.00IE (IN) 4.46 (48" SS W)IE (OUT) 4.36 (48" SS N) 285LF 48" SS @ 0.10% SSHM #4 - OPT 1B, TYPE 2 - 84"RIM = 23.00 IE (IN) 4.20 (48" SS S) IE (OUT) 4.10 (48" SS E) 164LF 48" SS @ 0.10% SSHM #5 - OPT 1B, TYPE 2 - 84"RIM = 23.00IE (IN) 3.79 (48" SS W) IE (OUT) 3.69 (48" SS NE) 318LF 48" SS @ 0.10% SSHM #6 - OPT 1B, TYPE 2 - 84"RIM = 28.31IE (IN) 3.58 (48" SS SW)IE (OUT) 3.48 (48" SS E) 112LF 48" SS @ 0.10% SSMH #2 - OPT 1B, TYPE 2 - 84"RIM = 26.88IE (IN) 4.76 (48" SS W)IE (OUT) 4.66 (48" SS E) 210LF 48" SS @ 0.10%JACK & BORE UNDER BNSF G G G G G G G G G G G G G G G G G G G G G G G GG G G G NEW WALL ACCESS ROAD EX. WETLAND ROW (VARIES) 124' ROW 100' ROW U P R R P S E WETLAND WETLAND EX. WETLAND PSE TRANSMISSION LINE TOWER CITY OF TUKWILA STORM POND 2523049006 EX. 36" SS EX. 36" SS 0005800036 PSE 7300 S 163RD ST 2523049023 PSE 0886700270 RYAN-GHC TWO LCC (KAISER PERMANENTE) 0886700090 BNSF PARCEL 008670075 15' POWER ESMT CITY OF SEATTLE 30' OLYMPIC PIPELINE ESMT INGRESS/EGRESS ESMT TO SOUND TRANSIT 10' POWER ESMT PSE 10' METRO SEWER ESMT 10' PSE POWER ESMT 10' &4' METRO SEWER ESMTS 20' UTILITY ESMT 30' POWER ESMT CITY OF SEATTLE 10 ' 25 ' 10' 10'25' 10' 1 0 ' 2 5 ' CONNECT TO EX FUEL LINES CONNECT TO EX FUEL LINES REROUTED FUEL LINES La s t S a v e d b y : Jo n . c o r k e r y o n : Au g 2 , 2 0 1 8 1 : 2 9 P M F i l e : Q: \ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ D e s i g n \ S S \ U t i l i t y o p t i o n s . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1" = 40'feet 8040400 scale1" = 40'feet 8040400 scale STRANDER BOULEVARD EXTENSION PHASE 3 SANITARY SEWER IMPROVEMENTS EXHIBIT OPTION 1B - WEST (WHEN PLOTTED AT 22" X 34") EXISTING GAS NEW GAS EXISTING SS NEW SS EXISTING OH POWER EXISTING WATER REMOVED / ABANDONED UTILITY LEGEND G G SS OP W SS APPENDIX A W W W W W W W W W W W 8" DECIDUOUST 6" DECIDUOUS 6" DECIDUOUS 6" DECIDUOUS6" DECIDUOUS 4" DECIDUOUS 4" DECIDUOUS 8" DECIDUOUS 10" DECIDUOUS 8" DECIDUOUS 10" DECIDUOUS12" DECIDUOUS 8" DECIDUOUS 10" DECIDUOUS 18" DECIDUOUS 10" DECIDUOUS 8" DECIDUOUS 10" DECIDUOUS8" DECIDUOUS 10" DECIDUOUS 10" DECIDUOUS10" DECIDUOUS12" DECIDUOUS 8" DECIDUOUS 8" DECIDUOUS12" DECIDUOUS 10" DECIDUOUS 6" DECIDUOUS 6" DECIDUOUS NA C H E S 25+00 SSMH #7 - OPT 1B, TYPE 2 - 84"RIM = 24.07 IE (IN) 3.22 (48" SS W) IE (OUT) 3.12 (48" SS NE) 266LF 48" SS @ 0.10% SSHM #8 - OPT 1B, TYPE 2 - 84"RIM = 25.19 IE (IN) 3.07 (48" SS SW) IE (OUT) 2.97 (48" SS E) 53LF 48" SS @ 0.10% SSMH #9 - OPT 1B, TYPE 2 - 84"RIM = 22.00IE (IN) 2.56 (48" SS W)IE (OUT) 2.46 (48" SS E) 400LF 48" SS @ 0.10% SSHM #10 - OPT 1B, TYPE 2 - 84"RIM = 21.00IE (IN) 2.07 (48" SS W)IE (OUT) 1.97 (48" SS E) 400LF 48" SS @ 0.10% SSMH #11 - OPT 1B, TYPE 2 - 84"RIM = 21.00 IE (IN) 1.73 (48" SS W) IE (OUT) 1.63 (48" SS N) 240LF 48" SS @ 0.10% SSMH #12 - OPT 1B, TYPE 2 - 96"RIM = 21.00 IE (IN) 0.75 (48" SS S) EX (OUT) 0.65 (36" SS E) 20LF 48" SS @ 4.39% SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS S S S S O A K E S D A L E A V E S W EX. SSMH EX. 72" SS 0886700100 RYAN-GHC TWO LCC (KAISER PERMANENTE) 0886700100 RYAN-GHC TWO LCC (KAISER PERMANENTE) PRIVATE ACCESS & PUBLIC UTIL ESMT SW 2 7 T H S T 15' POWER ESMT CITY OF SEATTLE 30' OLYMPIC PIPELINE ESMT 10' POWER ESMT PSE 10' METRO SEWER ESMT 20' WIDE WATER/SEWER ESMT La s t S a v e d b y : Jo n . c o r k e r y o n : Au g 2 , 2 0 1 8 1 : 2 9 P M F i l e : Q: \ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ D e s i g n \ S S \ U t i l i t y o p t i o n s . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1" = 40'feet 8040400 scale STRANDER BOULEVARD EXTENSION PHASE 3 SANITARY SEWER IMPROVEMENTS EXHIBIT OPTION 1B - EAST (WHEN PLOTTED AT 22" X 34") CONCEPTUAL EXISTING GAS NEW GAS EXISTING SS NEW SS EXISTING OH POWER EXISTING WATER REMOVED / ABANDONED UTILITY LEGEND G G SS OP W SS APPENDIX A X X X X X W W T T T T T T S S S S S S SS SS S S X X SD S D S D S D SD SD S D S D S D W W P P PPPP P W WXXXX SD SDSDSDSDSDSDSDSD SD SDSDSD SD SD S D SD P X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X W W W W W W W W W W W W WP P P X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X S D S D SS SS SS SS SS SS S D G G G G G G G G G G G G G G G G G G G G ALL STORM PIPES DRAINING HEREPER SURVEY IE'S. WHERE DOESSTORM RUNOFF GO? SUPPOSED TOGO SOUTH. SD W 100 101 102 117 310 P P 26" DECIDUOUS 12" DECIDUOUS MB WMWEL ICB 14" DECIDUOUS14" DECIDUOUS T P P TEL 12" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS 14" DECIDUOUS P P P T P 24" DECIDUOUS 24" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 16" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS 12" EVERGREEN12" Evergreen20" EVERGREEN10" EVERGREEN12" EVERGREEN20" EVERGREEN T P T P 20498 20499 20500 20501 20502 20503 20507 20508 20509 20510 20511 20512 T JB JB JB 21773 21774 28" DECIDUOUS 48" DECIDUOUS 36" EVERGREEN28" CEDAR 10" DECIDUOUS 8" DECIDUOUS 24" DECIDUOUS 36" DECIDUOUS16" DECIDUOUS 16" DECIDUOUS 14" DECIDUOUS 20" CEDAR14" CEDAR 20" DECIDUOUS 18" CEDAR 18" DECIDUOUS 24" DECIDUOUS 10" DECIDUOUS CO COCO RRSG RRSG JB JB 31896 31897 31898 31899 31900 31931 31932 31933 31934 31935 3193731938 31939 31940 31941 31942 31943 31944 31945 JB JB JB 2" DECIDUOUS2" DECIDUOUS2" DECIDUOUS JB 30" DECIDUOUS CO 34452 WMWEL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PC: 167+80.93 PT: 169+ 5 4 . 0 1 16 8 + 0 0 16 9 + 0 0 TACO BELL STRANDER BLVD BN S F IN T E R U R B A N T R A I L 15+00 20+00 JACK IN THE BOX SSCO SSCO SSMH #1 - OPT2, TYPE 2 - 96"RIM = 20.18 EX IN (IN) 5.41 (36" SS SW) IE (OUT) 5.31 (48" SS N) SSMH #2 - OPT2, TYPE 2 - 84"RIM = 25.49 IE (IN) 5.20 (48" SS S) IE (OUT) 5.10 (48" SS N) 254LF 48" SS @ 0.04% SSMH #3 - OPT2, TYPE 2 - 84"RIM = 30.88IE (IN) 4.97 (48" SS S)IE (OUT) 4.87 (48" SS E) 346LF 48" SS @ 0.04% SSMH #4 - OPT2, TYPE 2 - 96"RIM = 26.40IE (IN) 4.80 (48" SS W)EX IE (IN) 6.0 (12" SS N)EX IE (OUT) 4.7 (36" SS E) 146LF 48" SS @ 0.05% G G G G G G NEW WALL ACCESS ROAD EX. WETLAND ROW (VARIES) 124' ROW 100' ROW U P R R P S E WETLAND WETLAND EX. WETLAND PSE TRANSMISSION LINE TOWER CITY OF TUKWILA STORM POND 2523049006 EX. 36" SS 0005800036 PSE 7300 S 163RD ST 2523049023 PSE 0886700270 RYAN-GHC TWO LCC (KAISER PERMANENTE) 0886700090 BNSF PARCEL 008670075 15' POWER ESMT CITY OF SEATTLE 30' OLYMPIC PIPELINE ESMT INGRESS/EGRESS ESMT TO SOUND TRANSIT 10' POWER ESMT PSE 10' METRO SEWER ESMT 10' PSE POWER ESMT 10' &4' METRO SEWER ESMTS 20' UTILITY ESMT 30' POWER ESMT CITY OF SEATTLE 2523049083 NWR REALTY (TACO BELL) 16350 W VALLEY HWY 2523049043 JACK IN THE BOX INC 16400 W VALLEY HWY CONNECT TO EX FUEL LINES CONNECT TO EX FUEL LINES REROUTED FUEL LINES (4' SPACING) RECONNECT EX 12" SS MAIN TO NEW MH RECONSTRUCT AS NEEDED La s t S a v e d b y : Jo n . c o r k e r y o n : Au g 2 , 2 0 1 8 1 : 2 9 P M F i l e : Q: \ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ D e s i g n \ S S \ U t i l i t y o p t i o n s . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1" = 40'feet 8040400 scale STRANDER BOULEVARD EXTENSION PHASE 3 SANITARY SEWER IMPROVEMENTS EXHIBIT OPTION 2 (WHEN PLOTTED AT 22" X 34") CONCEPTUAL EXISTING GAS NEW GAS EXISTING SS NEW SS EXISTING OH POWER EXISTING WATER REMOVED / ABANDONED UTILITY LEGEND G G SS OP W SS APPENDIX A X X X X X W W W T T T T T T T S S S S S S SS SS SS S S X X SD S D S D S D SD SD S D S D S D W W W W W W P P PPPP P W WXXXX SD SDSDSDSDSDSDSDSD SD SDSDSD SD SD S D SD P X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X W W W W W W W W W W W WP P P X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X S D S D SS SS SS SS SS SS S D G G G G G G G G G G G G G G G G G G G G ALL STORM PIPES DRAINING HEREPER SURVEY IE'S. WHERE DOESSTORM RUNOFF GO? SUPPOSED TOGO SOUTH. SD W 100 101 102 117 310 P P 26" DECIDUOUS 12" DECIDUOUS 18" DECIDUOUS DECIDUOUS DECIDUOUS DECIDUOUS MB WMWEL ICB 14" DECIDUOUS14" DECIDUOUS P TEL 12" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS 14" DECIDUOUS P P P T P 24" DECIDUOUS 24" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 16" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS 12" EVERGREEN12" Evergreen 20" EVERGREEN EVERGREEN T P T P 20498 20499 20500 20501 20502 20508 20509 20510 20511 20512 T JB JB JB 21773 21774 28" DECIDUOUS 48" DECIDUOUS 36" EVERGREEN28" CEDAR 10" DECIDUOUS 8" DECIDUOUS 24" DECIDUOUS 36" DECIDUOUS16" DECIDUOUS 24" CEDAR 48" CEDAR 16" DECIDUOUS 14" DECIDUOUS 20" CEDAR14" CEDAR 20" DECIDUOUS 18" CEDAR 18" DECIDUOUS 24" DECIDUOUS 10" DECIDUOUS CO CO CO RRSG RRSG JB JB 31896 31897 31898 31899 31900 31931 31932 31933 31934 31935 3193731938 31939 31940 31941 31942 31943 31944 31945 JB JB JB 2" DECIDUOUS2" DECIDUOUS2" DECIDUOUS JB 30" DECIDUOUS CO 34452 WMWEL 0 0 0 0 0 0 0 0 0 0 0 0 0 0 PC: 167+80.93 16 6 + 0 0 16 7 + 0 0 16 8 + 0 0 16 9 + 0 0 TACO BELL STRANDER BLVD B N S F IN T E R U R B A N T R A I L 15+00 20+00 JACK IN THE BOX SSCO SSCO SSMH #1 - OPT3, TYPE 2 - 96"RIM = 20.18 IE (OUT) 5.31 (48" SS N) SSMH #2 - OPT3, TYPE 2 - 84"RIM = 25.49 IE (IN) 5.23 (48" SS S) IE (OUT) 5.13 (48" SS W) 254LF 48" SS @ 0.03% SSMH #3 - OPT3, TYPE 2 - 84"RIM = 27.53IE (IN) 5.10 (48" SS E)IE (OUT) 5.00 (48" SS N) 124LF 48" SS @ 0.02% SSMH #4 - OPT3, TYPE 2 - 84"RIM = 29.03 IE (IN) 4.94 (48" SS S) IE (OUT) 4.84 (48" SS E) 349LF 48" SS @ 0.02% SSMH #5 - OPT3, TYPE 2 - 96"RIM = 26.40 IE (IN) 4.80 (48" SS W)EX IE (IN) 6.0 (12" SS N)EX IE (OUT) 4.7 (36" SS E) 286LF 48" SS @ 0.01% G G G G G G G G NEW WALL ACCESS ROAD EX. WETLAND ROW (VARIES) 124' ROW 100' ROW U P R R P S E WETLAND WETLAND EX. WETLAND PSE TRANSMISSION LINE TOWER CITY OF TUKWILA STORM POND 2523049006 EX. 36" SS 0005800036 PSE 7300 S 163RD ST 2523049023 PSE 0886700270 RYAN-GHC TWO LCC (KAISER PERMANENTE) 0886700090 BNSF PARCEL 008670075 15' POWER ESMT CITY OF SEATTLE 30' OLYMPIC PIPELINE ESMT INGRESS/EGRESS ESMT TO SOUND TRANSIT 10' POWER ESMT PSE 10' METRO SEWER ESMT 10' PSE POWER ESMT 10' &4' METRO SEWER ESMTS 20' UTILITY ESMT 30' POWER ESMT CITY OF SEATTLE 2523049083 NWR REALTY (TACO BELL) 16350 W VALLEY HWY 2523049043 JACK IN THE BOX INC 16400 W VALLEY HWY CONNECT TO EX FUEL LINES CONNECT TO EX FUEL LINES REROUTED FUEL LINES10' 10' RECONNECT EX 12" SS MAIN TO NEW MH RECONSTRUCT AS NEEDED La s t S a v e d b y : Jo n . c o r k e r y o n : Au g 2 , 2 0 1 8 1 : 2 9 P M F i l e : Q: \ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ D e s i g n \ S S \ U t i l i t y o p t i o n s . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1" = 40'feet 8040400 scale STRANDER BOULEVARD EXTENSION PHASE 3 SANITARY SEWER IMPROVEMENTS EXHIBIT OPTION 3 (WHEN PLOTTED AT 22" X 34") CONCEPTUAL EXISTING GAS NEW GAS EXISTING SS NEW SS EXISTING OH POWER EXISTING WATER REMOVED / ABANDONED UTILITY LEGEND G G SS OP W SS APPENDIX A OPTION 1A 0+00 TO 7+50 0 10 20 30 40 0 10 20 30 40 -0+50 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 7+50 OPTION 1B STA 0+00 TO 9+50 0 10 20 30 40 0 10 20 30 40 -0+50 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 9+50 OPTION 1B STA 9+50 TO 19+50 -5 0 10 20 30 40 -5 0 10 20 30 40 9+50 10+00 11+00 12+00 13+00 14+00 15+00 16+00 17+00 18+00 19+00 19+50 OPTION 1B STA 19+50 TO 25+00 -5 0 10 20 30 40 -5 0 10 20 30 40 19+50 20+00 21+00 22+00 23+00 24+00 25+00 OPTION 1A 7+50 TO 11+65 0 10 20 30 40 0 10 20 30 40 7+50 8+00 9+00 10+00 11+00 12+00 BNSFCITY OF TUKWILA 400LF 48" SS @ 0.10%240LF 48" SS @ 0.10% 20LF 48" SS @ 4.39% 400LF 48" SS @ 0.10% 53LF 48" SS @ 0.10% 266LF 48" SS @ 0.10%112LF 48" SS @ 0.10% 318LF 48" SS @ 0.10%164LF 48" SS @ 0.10%285LF 48" SS @ 0.10% 285LF 48" SS @ 0.02%164LF 48" SS @ 0.02% 318LF 48" SS @ 0.02%186LF 48" SS @ 0.02% OAKESDALE ROW EX METRO SS EASEMENT AFN 6255262 KAISERBNSFBNSFCITY OF TUKWILAEX. 14' WIDE METRO SEWER EASEMENT CITY OF TUKWILA SSMH #1 - OPT 1A, TYPE 2 - 96" RIM = 27.09 EX. IE (IN) 5.14 (36" SS S) IE (OUT) 5.04 (48" SS E) SSMH #3 - OPT 1A, TYPE 2 - 84" RIM = 26.00 IE (IN) 4.83 (48" SS W) IE (OUT) 4.73 (48" SS N) SSMH #4 - OPT 1A, TYPE 2 - 84" RIM = 23.00 IE (IN) 4.70 (48" SS S) IE (OUT) 4.60 (48" SS E) SSMH #5 - OPT 1A, TYPE 2 - 84" RIM = 23.00 IE (IN) 4.53 (48" SS W) IE (OUT) 4.43 (48" SS NE) SSMH #6 - OPT 1A, TYPE 2 - 96" RIM = 22.33 IE (IN) 4.40 (48" SS SW) EX IE (IN) 4.50 (36" SS W) EX IE (OUT) 4.30 (36" SS E) SSMH #1 - OPT 1B, TYPE 2 - 96" RIM = 27.09 IE (OUT) 5.04 (48" SS E) EX IE (IN) 5.13 (36" SS S) SSMH #3 - OPT 1B, TYPE 2 - 84" RIM = 26.00 IE (IN) 4.46 (48" SS W) IE (OUT) 4.36 (48" SS N) SSHM #4 - OPT 1B, TYPE 2 - 84" RIM = 23.00 IE (IN) 4.20 (48" SS S) IE (OUT) 4.10 (48" SS E) SSHM #5 - OPT 1B, TYPE 2 - 84" RIM = 23.00 IE (IN) 3.79 (48" SS W) IE (OUT) 3.69 (48" SS NE) SSHM #6 - OPT 1B, TYPE 2 - 84" RIM = 28.31 IE (IN) 3.58 (48" SS SW) IE (OUT) 3.48 (48" SS E)SSMH #7 - OPT 1B, TYPE 2 - 84" RIM = 24.07 IE (IN) 3.22 (48" SS W) IE (OUT) 3.12 (48" SS NE) SSHM #8 - OPT 1B, TYPE 2 - 84" RIM = 25.19 IE (IN) 3.07 (48" SS SW) IE (OUT) 2.97 (48" SS E) SSMH #9 - OPT 1B, TYPE 2 - 84" RIM = 22.00 IE (IN) 2.56 (48" SS W) IE (OUT) 2.46 (48" SS E) SSHM #10 - OPT 1B, TYPE 2 - 84" RIM = 21.00 IE (IN) 2.07 (48" SS W) IE (OUT) 1.97 (48" SS E) SSMH #11 - OPT 1B, TYPE 2 - 84" RIM = 21.00 IE (IN) 1.73 (48" SS W) IE (OUT) 1.63 (48" SS N) SSMH #12 - OPT 1B, TYPE 2 - 96" RIM = 21.00 IE (IN) 0.75 (48" SS S) EX IE (IN) 0.64 (36" SS W) EX IE (OUT) 0.64 (36" SS E) EX. 36" SS @ 0.84% SSMH #2 - OPT 1A, TYPE 2 - 84" RIM = 26.88 IE (IN) 4.97 (48" SS W) IE (OUT) 4.87 (48" SS E) 210LF 48" SS @ 0.02% 210LF 48" SS @ 0.10% SSMH #2 - OPT 1B, TYPE 2 - 84" RIM = 26.88 IE (IN) 4.76 (48" SS W) IE (OUT) 4.66 (48" SS E) KAISERBNSF La s t S a v e d b y : Jo n . c o r k e r y o n : Au g 2 , 2 0 1 8 1 : 2 9 P M F i l e : Q: \ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ D e s i g n \ S S \ U t i l i t y o p t i o n s . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1" = 40'feet 8040400 scale1" = 40'feet 8040400 scale STRANDER BOULEVARD EXTENSION PHASE 3 SANITARY SEWER IMPROVEMENTS EXHIBIT OPTIONS 1A & 1B PROFILES (WHEN PLOTTED AT 22" X 34") CONCEPTUAL APPENDIX A OPTION 2 0 10 20 30 40 0 10 20 30 40 -0+50 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 7+60 SSMH #2 - OPT2, TYPE 2 - 84" RIM = 25.49 IE (IN) 5.20 (48" SS S) IE (OUT) 5.10 (48" SS N) SSMH #3 - OPT2, TYPE 2 - 84" RIM = 30.88 IE (IN) 4.97 (48" SS S) IE (OUT) 4.87 (48" SS E) TOP OF SEAL=9.20 (5' BELOW GRADE) OPTION 3 0 10 20 30 40 0 10 20 30 40 -0+50 0+00 1+00 2+00 3+00 4+00 5+00 6+00 7+00 8+00 9+00 10+00 10+28 SSMH #1 - OPT3, TYPE 2 - 96" RIM = 20.18 IE (OUT) 5.31 (48" SS N) IE (IN) 5.41 (36" SS S) SSMH #2 - OPT3, TYPE 2 - 84" RIM = 25.49 IE (IN) 5.23 (48" SS S) IE (OUT) 5.13 (48" SS W) SSMH #3 - OPT3, TYPE 2 - 84" RIM = 27.53 IE (IN) 5.10 (48" SS E) IE (OUT) 5.00 (48" SS N) SSMH #4 - OPT3, TYPE 2 - 84" RIM = 29.03 IE (IN) 4.94 (48" SS S) IE (OUT) 4.84 (48" SS E) 254LF 48" SS @ 0.03%124LF 48" SS @ 0.02%349LF 48" SS @ 0.02%286LF 48" SS @ 0.01% SSMH #1 - OPT2, TYPE 2 - 96" RIM = 20.18 IE (OUT) 5.31 (48" SS N) EX IE (IN) 5.41 (36" SS S) SSMH #5 - OPT3, TYPE 2 - 96" RIM = 26.40 IE (IN) 4.80 (48" SS W) EX IE (IN) 6.0 (12" SS N) EX IE (OUT) 4.7 (36" SS E) SSMH #4 - OPT2, TYPE 2 - 96" RIM = 26.40 IE (IN) 4.80 (48" SS W) EX IE (IN) 6.0 (12" SS N) EX IE (OUT) 4.7 (36" SS E) 254LF 48" SS @ 0.04%346LF 48" SS @ 0.04%146LF 48" SS @ 0.05% STRANDER FINISHED GRADE STRANDER FINISHED GRADE SECANT PILE WALL (TYP) SECANT PILE WALL/ PIPE PENETRATION (TYP) CROSSING SEAL (CONCRETE) La s t S a v e d b y : Jo n . c o r k e r y o n : Au g 2 , 2 0 1 8 1 : 2 9 P M F i l e : Q: \ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ D e s i g n \ S S \ U t i l i t y o p t i o n s . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 1" = 40'feet 8040400 scale STRANDER BOULEVARD EXTENSION PHASE 3 SANITARY SEWER IMPROVEMENTS EXHIBIT OPTIONS 2 & 3 PROFILES (WHEN PLOTTED AT 22" X 34") CONCEPTUAL APPENDIX A Memorandum Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 Tukwila, Washington Appendix B Sanitary Sewer Improvement Exhibits, Options 1 and 3 (Revised) 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 EA F O EA F O EA F O EA F O EA F O EA F O EA F O F O FO EA F O EA F O EA F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EL 3 F O EL 3 F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O EL3FO EZFO EZ F O EZ F O EZ F O EZF O EZFO EZFO EZFO EZFO EZFO EZFO EZFO EZFO EZFO EZ F O W W W W W W T T T T T T T T T T T T T T T G S S S S S S S S S S S S S S S S S S SS SS S S S S S S S S S S SS SS SS SS S S S S S S S S S S W W W W W W W W W W W W W W W G G G G G G O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS G G G G G G G G G G G G G G G T T T T T T OHP OHP OHP OHP OHP OHP O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G W W W W W W W G G G G P P P P P P P P P P P P P P P T T T T S S S S X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 8" DECIDUOUS 16" DECIDUOUS 14" DECIDUOUS 14" DECIDUOUS 18" DECIDUOUS 18" DECIDUOUS 18" DECIDUOUS 18" DECIDUOUS 26" DECIDUOUS 18" DECIDUOUS 28" DECIDUOUS 26" DECIDUOUS 32" DECIDUOUS 24" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 16" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS W 20" DECIDUOUS 22" DECIDUOUS 26" DECIDUOUS 30" DECIDUOUS 26" DECIDUOUS 6" DECIDUOUS 6" DECIDUOUS 48" DECIDUOUS 36" EVERGREEN28" CEDAR 10" DECIDUOUS 8" DECIDUOUS 24" CEDAR 48" CEDAR 16" DECIDUOUS 14" DECIDUOUS 20" CEDAR14" CEDAR 20" DECIDUOUS 18" CEDAR 10" DECIDUOUS STRANDER BLVD JACK IN THE BO X TACO BELL W E S T V A L L E Y H W Y W E S T V A L L E Y H W Y STRANDER BLVD B - A - UPRR BRIDGE VEHICULAR BRIDGEPEDESTRIAN BRIDGE BEGIN JOINT TRENCH END JOINT TRENCH LEGEND KING COUNTY SANITARY SEWER BP GAS LEVEL3 FIBER OPTIC PSE DISTRIBUTION STORM DRAINAGE STRUCTURAL WALLS La s t S a v e d b y : Jo u r d e n . m a k i n e n o n : Ju l 1 8 , 2 0 1 8 2 : 3 1 P M F i l e : Q:\ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ F i g u r e s \ U t i l i t y E x h i b i t s \ W e s t U t i l i t y R o u t i n g \ W e s t U t i l i t y R o u t i n g R E V 2 . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PR E L I M I N A R Y 42800 M A R C I A LEE M E D I N ASTATE OF WASHIN G T O N REGISTERE D P R O FESSIONAL EN G I N E E R 1"=30' STRANDER BOULEVARD EXTENSION PHASE 3 WEST UTILITY ROUTING OPTION 1A REVISION SW 1/4, SEC 24, T 23 N, R 4 E, W.M. 1"=60' APPENDIX B E B F O E B F O E B F O E B F O EB F O EB F O EB F O EB F O EB F O EB F O FO FO FO FO FO T T T T T T T T W W W W W W W W W W T T T T T T T T T T T T T T T T T T G G G G G G G G G T T T SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS S S S S S S SS SS SS OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP OHP G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G X X X X X T 30" DECIDUOUS 8" DECIDUOUS 6" DECIDUOUS 6" DECIDUOUS 6" DECIDUOUS6" DECIDUOUS 4" DECIDUOUS 4" DECIDUOUS 12" DECIDUOUS 8" DECIDUOUS 8" DECIDUOUS12" DECIDUOUS 10" DECIDUOUS BNSF BRIDGE LEGEND KING COUNTY SANITARY SEWER STORM DRAINAGE La s t S a v e d b y : Jo u r d e n . m a k i n e n o n : Ju l 1 8 , 2 0 1 8 2 : 3 1 P M F i l e : Q:\ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ F i g u r e s \ U t i l i t y E x h i b i t s \ W e s t U t i l i t y R o u t i n g \ W e s t U t i l i t y R o u t i n g R E V 2 . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PR E L I M I N A R Y 42800 M A R C I A LEE M E D I N ASTATE OF WASHIN G T O N REGISTERE D P R O FESSIONAL EN G I N E E R 1"=30' STRANDER BOULEVARD EXTENSION PHASE 3 WEST UTILITY ROUTING OPTION 1A REVISION SW 1/4, SEC 24, T 23 N, R 4 E, W.M. 1"=60' APPENDIX B VARIES -10 0 10 20 30 -10 0 10 20 30 0+00 0+92 -10 0 10 20 30 -10 0 10 20 30 0+00 0+92 JOINT TRENCH SECTIONA SCALE: NTS JOINT TRENCH SECTIONB SCALE: NTS SECANT PILE WALL JOINT TRENCH PSE DIST. (3) LEVEL3 FIBER (3) 12" BP GAS 14" BP GAS EXISTING GROUND EXISTING STORM 8" SANITARY SEWER JOINT TRENCH PSE DIST. (3) LEVEL3 FIBER (3) 12" BP GAS 14" BP GAS EXISTING GROUND SECANT PILE WALL FINISHED GRADE 6" 14" BP GAS 2' MIN 12" BP GAS 2' MIN ENCASED CONDUIT 8' JOINT TRENCH DIMENSIONSC SCALE: NTS JOINT TRENCH WALL La s t S a v e d b y : Jo u r d e n . m a k i n e n o n : Ju l 1 8 , 2 0 1 8 2 : 3 1 P M F i l e : Q:\ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ F i g u r e s \ U t i l i t y E x h i b i t s \ W e s t U t i l i t y R o u t i n g \ c 3 d _ U t i l i t y _ R o u t i n g _ W e s t _ R E V 2 . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PR E L I M I N A R Y 42800 M A R C I A LEE M E D I N ASTATE OF WASHIN G T O N REGISTERE D P R O FESSIONAL EN G I N E E R NTS STRANDER BOULEVARD EXTENSION PHASE 3 WEST UTILITY ROUTING DETAILS OPTION 1A REVISION SW 1/4, SEC 24, T 23 N, R 4 E, W.M. APPENDIX B AS REQUIRED FOR TRENCH BOX 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 EA F O EA F O EA F O EA F O EA F O EA F O EA F O F O FO EA F O EA F O EA F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EL 3 F O EL 3 F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O EL3FO EZFO EZ F O EZ F O EZ F O EZF O EZFO EZFO EZFO EZFO EZFO EZFO EZFO EZFO EZFO EZ F O W W W W W W T T T T T T T T T T T T T T T G S S S S S S S S S S S S S S S S S S SS SS S S S S S S S S S S SS SS SS SS S S S S S S S S S S W W W W W W W W W W W W W W W G G G G G G O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS SS G G G G G G G G G G G G G G G T T T T T T OHP OHP OHP OHP OHP OHP O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G G W W W W W W W G G G G P P P P P P P P P P P P P P P T T T T S S S S X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X 8" DECIDUOUS 16" DECIDUOUS 14" DECIDUOUS 14" DECIDUOUS 18" DECIDUOUS 18" DECIDUOUS 18" DECIDUOUS 18" DECIDUOUS 26" DECIDUOUS 18" DECIDUOUS 28" DECIDUOUS 26" DECIDUOUS 32" DECIDUOUS 24" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 32" DECIDUOUS 16" DECIDUOUS 12" DECIDUOUS 12" DECIDUOUS W 20" DECIDUOUS 22" DECIDUOUS 26" DECIDUOUS 30" DECIDUOUS 26" DECIDUOUS 6" DECIDUOUS 6" DECIDUOUS 48" DECIDUOUS 36" EVERGREEN28" CEDAR 10" DECIDUOUS 8" DECIDUOUS 24" CEDAR 48" CEDAR 16" DECIDUOUS 14" DECIDUOUS 20" CEDAR14" CEDAR 20" DECIDUOUS 18" CEDAR 10" DECIDUOUS STRANDER BLVD JACK IN THE BO X TACO BELL W E S T V A L L E Y H W Y W E S T V A L L E Y H W Y STRANDER BLVD B - A - UPRR BRIDGE VEHICULAR BRIDGEPEDESTRIAN BRIDGE BEGIN JOINT TRENCH END JOINT TRENCH LEGEND KING COUNTY SANITARY SEWER BP GAS LEVEL3 FIBER OPTIC PSE DISTRIBUTION STORM DRAINAGE STRUCTURAL WALLS La s t S a v e d b y : Jo u r d e n . m a k i n e n o n : Ju l 1 8 , 2 0 1 8 2 : 3 1 P M F i l e : Q:\ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ F i g u r e s \ U t i l i t y E x h i b i t s \ W e s t U t i l i t y R o u t i n g \ W e s t U t i l i t y R o u t i n g R E V 1 . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PR E L I M I N A R Y 42800 M A R C I A LEE M E D I N ASTATE OF WASHIN G T O N REGISTERE D P R O FESSIONAL EN G I N E E R 1"=30' STRANDER BOULEVARD EXTENSION PHASE 3 WEST UTILITY ROUTING OPTION 3 REVISION SW 1/4, SEC 24, T 23 N, R 4 E, W.M. 1"=60' APPENDIX B EA F O EA F O E A F O E A F O EA F O EA F O E A F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EL 3 F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O EV F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O ES F O W W W W W W W W G G G G T T T T S S S S S S SS SS O H P O H P O H P O H P O H P O H P O H P O H P G G G G G G G G G G G O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P O H P G G G G G G G G G G G G SS SS W W W W T T T T T T S S S S S S S S S S S S S S S S S S S S S S X X X X X X X X X X X X X X X X X X X X 24" DECIDUOUS 24" DECIDUOUS26" EVERGREEN 12" EVERGREEN12" Evergreen 20" EVERGREEN10" EVERGREEN12" EVERGREEN20" EVERGREEN 10" EVERGREEN 12" EVERGREEN 10" EVERGREEN 10" EVERGREEN 12" EVERGREEN 14" DECIDUOUS W E S T V A L L E Y H W Y 25' CLR FROM PSE TOWER LEGEND KING COUNTY SANITARY SEWER STORM DRAINAGE La s t S a v e d b y : Jo u r d e n . m a k i n e n o n : Ju l 1 8 , 2 0 1 8 2 : 3 1 P M F i l e : Q:\ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ F i g u r e s \ U t i l i t y E x h i b i t s \ W e s t U t i l i t y R o u t i n g \ W e s t U t i l i t y R o u t i n g R E V 1 . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PR E L I M I N A R Y 42800 M A R C I A LEE M E D I N ASTATE OF WASHIN G T O N REGISTERE D P R O FESSIONAL EN G I N E E R 1"=30' STRANDER BOULEVARD EXTENSION PHASE 3 WEST UTILITY ROUTING OPTION 3 REVISION SW 1/4, SEC 24, T 23 N, R 4 E, W.M. 1"=60' APPENDIX B -10 0 10 20 30 -10 0 10 20 30 0+00 0+92 -10 0 10 20 30 -10 0 10 20 30 0+00 0+92 JOINT TRENCH SECTIONA SCALE: NTS JOINT TRENCH SECTIONB SCALE: NTS SECANT PILE WALL JOINT TRENCH PSE DIST. (3) LEVEL3 FIBER (3) 12" BP GAS 14" BP GAS KC SANITARY SEWER EXISTING GROUND EXISTING STORM 8" SANITARY SEWER JOINT TRENCH PSE DIST. (3) LEVEL3 FIBER (3) 12" BP GAS 14" BP GAS KC SANITARY SEWER EXISTING GROUND SECANT PILE WALL FINISHED GRADE 6" KC SEWER 2' MIN 14" BP GAS 2' MIN 12" BP GAS 2' MIN VARIES KC SEWER 7' 2' MIN 14" BP GAS 2' MIN 12" BP GAS 2' MIN ENCASED CONDUIT VARIES ENCASED CONDUIT 8' JOINT TRENCH DIMENSIONSC SCALE: NTS JOINT TRENCH WALL KC SEWER MANHOLE La s t S a v e d b y : Jo u r d e n . m a k i n e n o n : Ju l 1 8 , 2 0 1 8 2 : 3 2 P M F i l e : Q:\ F e d e r a l W a y \ 2 0 1 8 \ A 1 8 . 0 0 8 5 \ 0 0 \ C A D D \ F i g u r e s \ U t i l i t y E x h i b i t s \ W e s t U t i l i t y R o u t i n g \ c 3 d _ U t i l i t y _ R o u t i n g _ W e s t . d w g Co p y r i g h t © B e r g e r A B A M . A l l R i g h t s R e s e r v e d . CI T Y O F T U K W I L A -ENGINEERING-STREETS-WATER-SEWER-PARKS-BUILDING- date scale file no revisionsdateno PUBLIC WORKS DEPT. proj dir proj eng checked drawn designed dateby **1908 N O T G N I H S A W ALIWKUT F O L A E S field bk no 33301 9th Avenue South, Suite 300 Federal Way, Washington 98003-2600 (206) 431-2300 Fax: (206) 431-2250 DATUM NAD 83 CALL 48 HOURS BEFORE YOU DIG 1-800-424-5555 PR E L I M I N A R Y 42800 M A R C I A LEE M E D I N ASTATE OF WASHIN G T O N REGISTERE D P R O FESSIONAL EN G I N E E R NTS STRANDER BOULEVARD EXTENSION PHASE 3 WEST UTILITY ROUTING DETAILS OPTION 3 REVISION SW 1/4, SEC 24, T 23 N, R 4 E, W.M. APPENDIX B Memorandum Project Sanitary Sewer Improvements – Alternatives Analysis Memo Strander Boulevard/Southwest 27th Street Extension - Phase 3 Tukwila, Washington Appendix C Cost Estimates, Options 1-3 OPTION 1A Quantity Unit Unit cost Total Connect to existing 2 EA $ 5,000 $ 10,000 SSMH 6 EA $ 12,000 $ 72,000 48" pipe 953 LF $ 400 $ 381,200 Jacking mob 1 LS $ 30,000 $ 30,000 Jack pit 1 EA $ 25,000 $ 25,000 Receiving pit 1 EA $ 25,000 $ 25,000 Jacking/LF 210 LF $ 450 $ 94,500 Shoring 24,000 SF $ 5 $ 120,000 Dewatering 1 LS $ 120,000 $ 120,000 Subtotal $ 877,700 Contingency 30% $ 263,310 Total $ 1,141,010 OPTION 1B Quantity Unit Unit cost Total Connect to existing 2 EA $ 5,000 $ 10,000 SSMH 12 EA $ 12,000 $ 144,000 48" pipe 2258 LF $ 400 $ 903,200 Jacking mob 1 LS $ 30,000 $ 30,000 Jack pit 1 EA $ 25,000 $ 25,000 Receiving pit 1 EA $ 25,000 $ 25,000 Jacking/LF 210 LF $ 450 $ 94,500 Shoring 55,200 SF $ 4 $ 220,800 Dewatering 1 LS $ 230,000 $ 230,000 Subtotal $ 1,682,500 Contingency 30% $ 504,750 Total $ 2,187,250 OPTION 2 Quantity Unit Unit cost Total Connect to existing 2 EA $ 5,000 $ 10,000 SSMH 4 EA $ 12,000 $ 48,000 48" pipe 746 LF $ 400 $ 298,400 Wall Penetration & Groundwater Seal 1 LS $ 200,000 $ 200,000 Shoring 19200 SF $ 5 $ 96,000 Dewatering 1 LS $ 80,000 $ 80,000 Subtotal $ 732,400 Contingency 30% $ 219,720 Total $ 952,120 OPTION 3 Quantity Unit Unit cost Total Connect to existing 2 EA $ 5,000 $ 10,000 SSMH 5 EA $ 12,000 $ 60,000 48" pipe 1013 LF $ 400 $ 405,200 Shoring 24000 SF $ 5 $ 120,000 Dewatering 1 LS $ 85,000 $ 85,000 Subtotal $ 680,200 Contingency 30% $ 204,060 Total $ 884,260 Note: These cost estimates only include anticipated construction costs, no property acquisition or easement costs are included.