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Home My WebLink About97.PPP 040115 Newport Force Main �o�NS•{ S A N f Tq T��2 � � o Q � O - h Orange '•�� - - ��( _ o+, — _ .� r, __ AIL Orange County Sanitation District We're here for you. TO PLANT 2 f0 L � f � w nee ,rroe.w XIST CROSS �Q Aaon� OVER #1 W EXIST 0SS J z OVER #2 ,occv.wn.s. nrvoow u`wa M�yV w.wiu u n Or. «po111�R 6M0w�_ d,T10e � O Idle�'nOR JA,R AIq,OA 1�I.N'.el\ eew n��w d,e"Mario" ow ow COAST H O~Y eeeon�wa IlallM Kwwme m ,eex■or,,.e,wr o.we" Irl�1e`IION —�f�� Cw iew 1 8AY BRIDGE emew dlPa VALVE VAULT EXIST CROSS axe► DG \I-,— . ra«rro� OVER p3 woo � u�rs a > n>FwoortT LIDO riEST iU LIDO EAST FY �•. LEGEND Open Trench Jack and Bore Microtunnel Curer' ripe a 6 i r West Newport Phase 2 CIPP : ,. '' ''' Qi Sept 2015 - y> © ��?� ,+ Jan 2016 a CIPP * a May 2015 14, `� ► - s �' ; 7►►- _ .;� I ,. May 2015 r CIPP Pit Locations ' ' � _ Phase 2 CIPP Sept 2015 — Jan 2016 01+ ` "I 41 o •��l�r. Tustin OT 4� 3QL . May 2015 MIA Sterling Q' BMW `� .�?�►= 1 oliday Inn �. _ ,� i Dover OT Joe'�'s -":, May 2015 0 Crab Shack `�� f '� 'Rot�c o No ` ► ' Hornblower y r� R G _ p Sta'ti n ,. _ . T' •r, - �.e Newport Tunnel Cruises . . / �f; ter.' �' � _ .t May 2015 s �' Itl i 4y.4� g 4lid , •,,tom Rr r; _�•: MtDonald's '. 11 12 14 Phase 2 " '151, �'ao Balboa Crestview Dr ad` �h11617 :. Bay Resort , R Feb 2016 .�� t P/ "411 pr, o . May 2016 A: * `='�' CIPP Apr 2015 .•r 1 1 r ay OP 'Ac .A '02126%`2015 5,: 10 V Tunnel Section ............ .......... Existing I I Excavation I 1 Concrete Obstruction I mTBM I Existing Debris r t i � 1 I N � � foe .�:• � .ram /�/�� ..�' � � x`; f • . ` ~ j , •,. . " 1 w • • t i L ' 9 Tunneling Continues • Cleared Debris from Imhoff Tank • Resumed tunneling on March 9 • Concern heightened over potential obstructions under bridge — Re-reviewed any drawings for potential clues — Implemented new technology Geophysical Multichannel Analysis of Surface Waves (MASW). — Potholed below surface to remove any doubts Geophysical Survey Bridge A `tQ Al�), 1�" CALTRANS SR-SS�ST-1 SEPERATION �•� SEE NOTE 2 I v x NEW NgiTH FM-" FOUNDATION PLAN INDICATED HISTCRICAL PLAN INDICATED _ � " F IR-SJL�• "EXIST FOOTING TO BE AQ REMOVED NEW SOUTH FMZ 0 T"F•' 1, -pk{-42 - .a - °IMHOFF TANK N0.1 TO RE DEMOLISHED �. ;-_'_._ -PN`i ` ' .6+ ' ,y a�P -- `.- _":....i 21 S1�1::A`' / y f � + _ .I Tt.0k9p MjH ti-- JI+00•'. I l -- IGNWAY I r 0 4D 80 �/qA�r _1 _ ___=y` _ STA 62+57.60 V /�//i.`' :y' �- _ G6.AG. T— --- SCE 24"ACV ELEC412KV CITY WATER a-- NEW LIDO FM - - R ! SO CAL L GAS\�� •� 8C h 57A EDT! SEE NOTE 4- � - �. NEW 5.FM STA 69+97.68 o - a _ 2' `CALTRANS SR-55 R-1 SEPERATIIXJ i ( ) FOUNDATION PLAN INDICATED / NEW S.FM STA 70+OO.DO(AHEAD) "EXIST FOOTING TO BE REMOVED' SEE NOTE 3 j C 75 o e- o N/5 I" a 0 `OJ,I v Piz- ROADpi- Vi} 70 N — — OOVO T.aNX m -- - _ - - --__- - 10 — — -- -- _— _ — — — Ij 5 - w SD CAL GAS a 9 ' VEPoFY PRIDR 0 0 y y T'AJ7+07.1 a� INlLF1..3.3 a3 46F TA-5 . _5 0.0033 x g gg S 0.0073 — CASING B E Lf -f0 BE CASING 48 STL CAST TUNNEL R CEIVING PIT mo -10 STA 60+60.00 ST.89+89.88 INV.EL-8.86 _ TUN EL LAUNCHI G EL IN CEIVRJO PIT <r�>� ' -f5 -20 -20 F _ PROFILE 3 M< -25 60+00 61+00 62fOG 63+00 64+00 65+00 66+00 67+00 66+00 69+00 7i9+00 71+00 ORANGE COUNTY NEWPORT FORCE MAIN REHABILITATION 5-60 a � =e =Bn�NC LINE 2 MASW SURVEY RESULTS "G' y�1 w SANITATION DISTRICT PERFORMED ONO3/10/15 LINE 2 DESORPTION RAre ASF = z'�A�A:�To^� .0 FEET RIGHT SOUTH OF TUNNEL ALIGNMEN 1 • ,S .r •� �. • 1 - , �• _�ti �V','►+`^ram •�.-,�,J ��.. '� - � �.�' i• . ' f r ' } �r N,`. ,.�.',i �r� •' ter'""ya � r •• ' �,,,� '�:;x tic' �f � .Y �,� •,r � :. � �. Wooden Piles in Tunnel Alignment Caltrans SR-55/SR-1 Separation Foundation Plan "Exist Footing to be Removed" 64+80 65+9 + 00 6 4+ 00 6 5+ 00 I 65+70 65+15 AApproximate Limits of Piles Uncovered below Concrete r ' from 65+15 to 65+70 ti Approximate Limits of Construction and Excavation Investigation «• from 64+80 to 65+90 NN-N- / r Not to Scale Wooden Piles in Tunnel Alignment I'AtlII`KO VV/1JI III%AIIVVr%I I YYLJIL7VVI\V LPIA4LJ LVVf\II\VI YYLJI Bridge pier Current excavation limit Lane 1 I I 8.5'± Westbound Sidewalk I 8'; Reinforced Unreinforced J i /-concrete pile cap 0 O2 Bridge pile concrete pile cap . . . . supports 19 Ov i 42" dia. microtunnel paths OFNot to Scale O# Timber pile row A OP a - i _ 1i AV ��llta►�Ila!R1U11 •i i.T.,T.... - .-. � ^�.-r• �� .�� 1'��.. �.. .�_ Challenges . . . . • Two sets of wood piles obstructing the alignment • MT machines cannot tunnel through wood . • Low overhead clearance from bridge • High groundwater near bay • Shoring difficult due to multiple obstructions • Must keep traffic lane open on PCH Aga ,a � q 11 I I I a ,, `It'i ♦1 .. IJ�rI�� 1 ' G h f _ R t r, -•►. tea.- • t b n. �• ,. i,�r A+ t . � �i r M�r . AZ � IF rJ � , 1 '��-fir•,�",�� •► � , � .� � ,�,��-�r: `.� /` dry. �•��r r I 1 • '� fir, , ' •� .�� + r � ' • � •� ,, �*� ,�,._I r :�"r_ i �' •i�`�J�CJ� � � 1. ,. �� a ,�i .� r_____--.,--- � �� J !1 � _# i _1 � - _ —'� r "e � . � i �� : �� 1 ,� �1 � �r ; r ` / �;� �.�r .� J,i:. �; i / ;��, r . , -'�.��' � .•• � _ Time to Reassess . . • Attempts to remove piles proved unsuccessful • Tunneling was stopped on March 23 to prevent machine going under bridge. • Plans to rescue machine or remove piles were analyzed . • Plan was formed for pile removal through deep excavation and dewatering effort. t • iF ��♦ _ , �t �X, • _ tw r N 1 ' ilk,� • -s i r �• + 4 i = k i t . �-�. � � � •� � �"- � ^��s- J "mow. r IF ,dMann 1, we 1 r MUM- + r. 10 4 � U `<- 2 Recovery Plan • Tunneling planned to resume tomorrow (4/2/2015) • Construction in all areas — Tunnel, CIPP and Open-Cut • Double-shift tunneling and critical intersections • Change Dover intersection to open-cut construction • Targeting completion of Phase 1 work by May 23 • Adding Lido Repairs to allow for Phase 2 work 't J@.Mri - E MAlly STOP MAY z3RII E • " i Questaions 4 0 E �l ■, - � -� ti v .r At about 10 A . N. on March 7 , 1981 , one section of the Newport Beach sewer system ruptured • flooding the Pacific Coast Highway with raw sewage . Break was located near the Balboa Bay Club.