BP EXPLORATION (ALASKA) INC. PRUDHOE BAY UNIT WEST DOCK CAUSEWAY VICINITY MAP

Transcription

1 This map is based on U.S.G.S quad Beechey Point (B-3) and on the Unit Operator's Facility Maps. PROJECT LOCATON: All coordinates are NAD83 WEST DOCK HEAD N.2 LAT. = 7 23' 13.3" LONG.= ' 56.7" ALASKA STATE PLANE ZONE 4, NAD83 X = 1,822, FEET Y = 5,993, FEET DATUM: MEAN SEA LEVEL PURPOSE: MANTENANCE ADJACENT PROPERTY OWNER: STATE OF ALASKA WEST DOCK HEAD N.3 LAT. = 7 23' 59.1" LONG. = ' 25.3" ALASKA STATE PLANE ZONE 4, NAD83 X= 1,821, FEET Y = 5,997, FEET SEAWATER TREATMENT PLANT LAT. = 7 24' 43.7" LONG.= ' 52.2" ALASKA STATE PLANE ZONE 4, NAD83 X = 1,82,767.1 FEET Y = 6,2, FEET SEC. 11, 14, 23, T12N, R14E UMAT M. AOL# & BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT VCNTY MAP 1" = 2 Miles FGURE: 1 np1666-vmxd

2 ti.::" XA west uock Mamtenance :seawater Treatm nt Plant (STP) (19 3) Small Boat Mooring Groin #1 (2) Groin #6 (25) Groin #5 (25) Groin #4 (22) Waterflood Extension (1981) Groin #3 (22) Small Breach (52 ft, 1981) Groin #2 (22) Dock Head No. 3 (DH3, 1976) arge Docking Area ' ' ATS 1144 '... l t. Mcintyre #2 Pad AOL 4249 l (1991 ) ACS Boat Ramp Middle Leg Storage Area for Two Conexes, Boom & Two Reels of Boom ATS 1144 ADL4249 Small Equipment Storage Area,.+--,." Dock Head No. 2 (DH2, 1975) Barge Docking Area ATS 944 AOL Staging Area BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT SEQUENTAL EXPANSON OF " = 2' FGURE: 2 np mxd

3 BPXA West Dock Maintenance Area where Gravel Berms May Be Shaped as Needed to Match Barge Heights Areas for Dredge ;.. Material Placement.,. Within Original Footprint 4 C.Y. Gravel Bags ATS ; ADL4249 Existing Retaining Wall Existing Bridge & Large Breach Notes: 1. From POA AA, Erosion Control and Maintenance. Shoreline mapped from July 5, 215 aerial photography. Bathymetric contours are approximate, in feet. Existing Slope Armor Replace sacrificial bags on gravel bag revetment as needed based on future monitoring. (1) Ex ting Retaining Wall Middle Leg - Fill eroded areas as needed, typically 5, cubic yards of gravel per year (up to a maximum of 2, cubic yards and 8 gravel bags per year). Exact locations to be determined in the field. (1) ATS 1144 AOL 4249 Repair or upgrade gravel bag revetment protecting 36" pipeline as neeeded based on future monitoring findings. (1) Existing Gravel Retention System Existing Small Equipment Staging Area, Small Boat Launch South Leg - Fill eroded areas as needed, typically 5, cubic yards of gravel per year (up to a maximum of 2, cubic yards and 4 gravel bags per year). Exact locations to be determined in the field. (1) BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT FROM SHORE TO DOCK HEAD NO. 2 AND LARGE BREACH 1" = 5' Feet FGURE: 3 np mxd

4 Area for Dredge Material Placement Wrth in Original Footprint. (1) Middle Leg - Fill eroded areas as needed, typically 5, cubic yards of gravel per year (up to a maximum of 2, cubic yards and 8 gravel bags per year). Exact locations to be determined in the field. (1).l:H' XA west uock Maintenance Sheet 4of14 3' x 4' Scour Holes Fill Zone WDH2 Screeding Area Previously Permitted 15' x 4' Scour Holes Fill Zone ' ',, 'f J Existing Retaining Wall Existing Slope Armor Maintenance as needed. (1) nstall new gravel bag revetment protecting flank of Dock Head 2 Based on future monitoring. (1) South Leg - Fill eroded areas as needed, typically 5, cubic yards of gravel per year (up to a maximum of 2, cubic yards and 4 gravel bags per year). Exact locations to be determined in the field. (1) Area for Dredge Material Placement Wrthin Original Footprint. (1) Shoreline mapped from July 5, 215 aerial photography. Bathymetric contours are approximate, in feet. Area where Gravel Berms May Be Shaped as Needed to Match Barge Heights rl a !._ 1 Areas_ for Dredge a..._.._. Material Placement n-... Within Original Footprint 4 C.Y. Gravel Bags BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT WEST DOCK HEAD NO. 2 DETAL MAP Notes: 1. From POA AA, Erosion Control and Maintenance. 1" = 15' Feet FGURE: 4 np mxd

5 ' ' ' " ', ', ', ' ' ', Existing Slope Armor "'l, Replace gravel bags as needed based on future monitoring ' ATS135 AOL HPXA West Dock Maintenance Sheet 5of14 Extend revetment to Crowley Facilities if warranted by erosion as previously permitted Middle Leg - Fill eroded areas as needed, typically 5, cubic yards of gravel per year (up to a maximum of 2, cubic yards and 8 gravel bags per year). Exact locations to be determined in the field. (1) Area for Dredge Material Placement Within Original Footprint. (1) ::-- AOL 4249 ' ', ', ' ---- ' -- --,- Existing Slope Armor Replace gravel bags as needed based on future monitoring. (1) Area where Gravel Berms May Be Shaped as Needed to Match Barge Heights """"" ;::.. Areas for Dredge Material Placement...,u. Within Original Footprint 4 C.Y. Gravel Bags ' ' ' ', ' ' Existing Retaining Wall Shoreline mapped from July 5, 215 aerial photography. Bathymetric contours are approximate, in feet. BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT TO WEST DOCK HEAD NO. 3 Notes: 1. From POA AA, Erosion Control and Maintenance. 1" 5' FGURE: 5 np mxd

6 Area for Dredge Material Placement Within Original Footprint. (1) 'V ATS 1144 ADL4249 tlpxa west uockmamtenance Sheet 6of14 Area where Gravel Berms May Be Shaped as Needed to Match Barge Heights i!: Areas for Dredge '! Material Placement fh... Within Original Footprint 4 C.Y. Gravel Bags Maintenance, replacement, or repositioning of existing groins Notes: 1. From POA AA, Erosion Control and Maintenance. Groin #3 (22) North Leg - Fill eroded areas as needed, typically 15, cubic yards of gravel per year (up to a maximum of 45, cubic yards and 5 gravel bags per year). Exact location to be determined in the field. (1) Existing Small Breach ATS 135 AOL ',... ' ' ' ' Existing Security Station ' ' Source area for beach replinishment material. Material removal/dredging will be permitted separately. Groin #2 (22) ' ', ', ' Existing Slope Armor Replace gravel bags as needed based on future monitoring Middle Leg - Fill eroded areas as needed, typically 5, cubic yards of gravel per year (up to a maximum of 2, cubic yards and 8 gravel bags per year). Exact location to be determined in the field. (1) Areas for Dredge Material Placement Within Original Footprint. (1) BP EXPLORATON (ALASKA) NC. Shoreline mapped from July 5, 215 aerial photography. Bathymetric contours are approximate, in feet. PRUDHOE BAY UNT WEST DOCK HEAD NO. 3, PM-2 and SMALL BREACH 1" = 5' FGURE: 6 np mxd

7 .t:h'xa West uockmamtenanc Sheet 7of14 Existing Slope Armor Seawater Treatment Plant (STP) OutfallPipe Replace Filter Fabric, Gravel Bags, and Concrete Blocks as needed typically 2 gravel bags per year (Up to a maximum of 1,2 gravel bags per year). ' a:: Existing Marine Life Return Line Approx. Location / '-,,. / / Groin #1 (2) Groin #6 (25) Maintenance, replacement, or repositioning of existing groins. Groin #4 (22) North Leg - Fill eroded areas as needed, typically 15, cubic yards of gravel per year (up to a maximum of 45, cubic yards and 5 gravel bags per year). Exact location to be determined in the field. (1) Concrete Blocks a..;.- Area for Dredge Material 4 C.Y. Gravel Bags Notes: 1. From POA AA, Erosion Control and Maintenance. ATS 1144 V ADL4249 : ::::::::::4 Area for Dredge Material Placement Within Original Footprint. (1) Groin #3 (22) Shoreline mapped from July 5, 215 aerial photography. Bathymetric contou rs are approximate, in feet. BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT STP AND NORTH END OF ATS135 l AOL " = 5' FGURE: 7 np mxd

8 l:h-'xa West Uock Mamtenance Sheet 8of ,., Scale 1" = 1' Grid North... LEGEND: -e.1 -a.o-- Elevation (ft. MLLW) Elevation Contour (ft, MLLW) NOTES: Survey data acquired on July 19 and 2, Horizontal datum is Alaska State Plane Zone 4, NAO 27, US Survey Feet. 3. Vertical datum is National Ocean Service (NOS) Mean Lower Low Water (MLLW), as established at the NOS Tide Gauge in Prudhoe Bay, AK. 4. Bathymetric soundings are shoal - biased. 5. Drawing not to be used for navigation. BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT WEST DOCK CAUSEWAY DOCK HEAD No.2 PROPOSED SCOUR FLL LOCATON MAP NOT TO SCALE FGURE: 8 np1666 _figb.cdr

9 BPXA West Dock Maintenance Sheet 9of14 TOP OF EXST NG PLE ELEV. 1;'.l' ELEV. B.O' WEST DOCK HEAD No.2 ELEV. 6.' ELEV. 4.' T ELEV. 2.' ELEV. O. OOMLW t-- ELEV. -1.' ELEV. -2. ELEV. -3. ELEV. -4. ELEV. -5. ELEV. -6.' THS PROJECT SCOUR FLL AREA ELEV. -7.'l l /,--..._ ELEV. -B.O'... ).,...,- ELEV. -9.' ELEV. -1.' ELEV ' CROSS SECTON A - A' BP EXPLORATON (ALASKA) NC. NOTES: 1. Survey data acquired on July 19 and 2, Location of cross section shown in Figure 8. PRUDHOE BAY UNT WEST DOCK CAUSEWAY DOCK HEAD No.2 PROPOSED SCOUR FLL CROSS SECTON NOT TO SCALE FGURE: 9 np1666 _fig9.cdr

10 BPXA West Dock Maintenanc Sheet 1of FT (APPROX) 4 CY GRAVEL BAGS ANCHOR TRENCH GRAVEL POLYESTER FLTER FABRC -5 FT GENERAL CROSS SECTON BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT GRAVEL BAG REVETMENTS CROSS SECTON FGURE: NOT TO SCALE 1 np1666_fig1.cdr

11 BPXA West Dock Maintenance LEGEND 9 2..s CD! 1 s:.! Zl Station Designation w 19+ F2 69 KV Profile Profile 1983 Profile CC1 F1 69 KV CC2-1 36"SW 4"SW 5 NY Range {Feet from Causeway Centerline) 6 SE NOTES 1) Vertical Datum is ARCO MLLW, which is identical to National Ocean Service MLLW. 2) Range datum is causeway centerline unless otherwise noted. 3) 1983 profile and locations of utility lines derived from As-Built Drawing PBFG-CED ) 24 profiles surveyed 2-9 August. 5) 214 profiles surveyed 19-2 July. 6) 216 profiles surveyed July. BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT SDE SLOPE PROFLES NOT TO SCALE FGURE: 11 np1666_fig1 1.cdr

12 tll' XA west LJock Mamtenance * STP-2f--STP-6* s p _,. STP ,..._- TP-7 O TRA SECT m:g LOC ONS --E ""!+-- E North Leg Middle Leg South Leg BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT SLOPE PROTECTON 24 TRANSECT LOCATONS 1" = 2' FGURE: 12 np1 666_fig1.mxd

13 tlp XA West Vock Mamtenanc< 3 STP-2 (Gravel Bag Revetment on STP Pad) Q) 1 c > ij ,,,, ' w Range (Feet from Causeway Centerline) 4 E Q) 1 c > ij... STP-6 (Gravel Bag Revetment on STP Pad) ' w Range (Feet from Causeway Centerline) 25 3 E BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT SDE SLOPE PROFLES NOT TO SCALE FGURE: 13 np1666_fig13.cdr

14 tlp XA West!Jock Maintenance 3 DH3-T (Gravel Bag Revetment on Dockhead 3) 2 ::;?; Q) 1 c > &i -1 NW Range (Feet from Causeway Centerline) 25 3 SE 3 DH2-T1 (Gravel Bag Revetment on Dockhead 2) 2 ::;?; Q) 1.. c > &i -1.. NW Range (Feet from Causeway Centerline) 25 3 SE BP EXPLORATON (ALASKA) NC. PRUDHOE BAY UNT SDE SLOPE PROFLES NOT TO SCALE FGURE: 14 np1666_fig 14.cdr