In Reply Refer To: MS 5231 August 22, 1990

Shell Offshore Inc Attention: Mr. R. C. Watson NOTED - KRAMLK Post Office Box 60159 Nev Orleans, Louisiana 70160

Gentlemen:

Reference ls raade to the following plan received August 8, 1990:

Type Plan - Supplemental Plan of Exploration Lease - OCS-G 7963 Block - 807 Area - Mississippi Canyon Activitiaa Proposed - Well E

In accordance with 30 CFR 250.33, this plan is hereby deemed submitted and is now being considered for approval.

Your control nunber ls S-2517 and should be referenced in your communication and correspondence crncernlng this plan.

Sii cerely,

for. (Orlg. Sgl.) William H. rU'-tin

D. J. Bourgeois Regional Supervisor Field Operations

bcc: Lease OCS-G 7963 POD File (MS 5032) /MS 5034 w/public info, copy of the pl,

TTrosclair:cck:08/08/90:POECOM

Shell Offshore Inc. O n &"6t« iquare PO Bo« 60159 Ntw Cleans Louisiana 70160

Dwowate' O'visior

AUG

A * RECEIVED' [7 AUG 0 01990 VV FIELD

\ v ' - , OPFRAIIGNS <£V

Regional Supervisor Office of Fiela -rations Minerals Management Jervice 1201 Elmwood Park Blvd. New Orleans, LA 70123-2394

Dear Sir:

SUBJECT: SUPPLEMENTAL PLAN OF EXPLORATION SCI OCS-G 7958, MISSISSIPPI CANYON BLOCK 763 SOI OCS-6 7963, MISSISSIPPI CANYON BLOCK 807 OFFSHORE LOUISIANA

Shell Offshore Inc. (SOI) i«rewith submits for your approval a Supplemental Plan of Expi.ation (POE) for Location E in OCS-G 7963, Mississippi Canyon Block 807. Your prompt review and approval of this Plan will be greatly jppredated, as drilling may commence by August 28, 1990.

SOI has submitted five POE's and drilled five wells as follows:

POE'S

1. In i t i a l POE and Shallow Hazards Report. Locations A, B, and C in each of the captioned blocks.

2. Supplemental POE. Add Location C in each block

3. Revised Location A, Mississippi Canyon Block 807.

4. Revised Location B, Mississippi Canyon Block 807.

5. Supplemental POE. Add Location D in Mississippi Canyon Block 807.

APPROVAL DATES

June 3, 1988

December 22, 1988

July 5, 1989

March 1, 1990

May 11, 1990

LP9021401 - 0001.0.0

2

WELLS DRILLED BLOCK AND LOCATION

3. OCS-G 7963 No. 1 ST-1 4. OCS-G 7963 No. 2 5. OCS-G 7963 No. 3

1. OCS-G 7958 No 1 2. OCS-G 7963 No. 1

763 807 807 807 807

Location C Location A Location A Location B Location C

SOI Is currently d r i l l i n g OCS-G 7963 No. 3 ST-1 in Mississippi Canyon Block 807.

The captioned leases are not part nf any Biological Sensitive Area, Shipping Fairway, or M i l i t a ry Warning Area. A search for cul tura l resources prior to d r i l l i n g is not required. The d r i l l i n g r i g we propose to use, the semisubmersible "Zane Barnes", is currently d r i l l i n g for SOI in Mississippi Canyon Block 807.

This Plan 1s submitted in accordance with 30 CFR 250.30, e f fec t ive May 31, 1988, and consists of a series of attachments describing detai ls of our Intended operations. The attachments we desire to be exempted from disclosure under the Freedom of Information Act are marked "Confidential".

Should you require addit ional Information, please con fact Al Pickett at (504) 588-0198 or 588-6312 In ou.- New Orleans o f f i ce .

Yours very t r u l y ,

Original 5 • R. C. vv/>

R. C. Watson

Division Production Administration Manager

ARP/ptc

Attachments cc: D is t r i c t Supervisor (w/attachments)

New Orleans D i s t r i c t Minerals Management Service 1201 Elmwood Park Blvd. New Orleans, LA 70123-2394

LP9021401 - 0002.0.0

INDEX OF ATTACHMENTS SUPPLEMENTAL PLAN OF EXPLORATION

SOI OCS-fi 7958, MISSISSIPPI CANVQN~BTO~CK 763 SOI OCS-G 7963, MISSISSIPPI CANVON DLOCK"5O7

OFFSHORE LOUISIANA

ATTACHMENT NO. OF NO. DESCRIPTION COPIES

1 Index of Attachments 9

2 Description of Ac t i v i t ies and Hydrogen Sulfide 5* Determination

3 General Information (Schedule of Ac t i v i t i e s , Safety 9 Features, Hydrogen Sulfide Precautions, Pol lut ion -Prevention Features, D r i l l i n g Operations, Well Abandonment)

4 P la t , Surface Location of Wells 9

5 P la t , Proposed Bottom-Hole Locations and Depths 5*

6 Geologic Structure Map 5*

7 Cross Section, A 5*

8-A L i s t , D r i l l i n g Mud Components and Additives 9

8-B Mud and Cuttings Discharge Volumes 9

8-C Schematic - Mud and Cuttings Discharge Volumes 9

9 Comments, Spi l l Prevention, Control and 9 Countermeasure Plan

10-A Comments, Air Emissions Data 9

10-B Diagram, A1r Emissions Source and Elevation 9

11 Descript ion, Onshore Support Fac i l i t y and Support 9 Vessels, Description, Travel Frequency

12 Shallow Hazards and Chemosynthetic Organisms 5* Comments

13 P la t , Transportation Routes and Shore Base 9 Description

14 Anchor Sites 5*

•Confidential

Attachment 1

LP9021401 - 0004.0.OK

GENERAL INFORMATION SUPPLEMENTAL PLAN OP EXPLORATION

SOI OCS-G 7956, MISSISSIPPI CANYON BLOCK 763 SOI OCS-G 7963, MISSISSIPPI CANYON BLOTTTgoT

OFFSHORE LOUISIANA

SCHEDULE OF ACTIVITIES , , ?

Exploratory drilling may commence as early as ApY j ] 1990, provided the rig "Discoverer-Seven Seas" is available. Drilling the location is expected to require about 140 days.

SAFETY FEATURES

The drillship "Dtstoverer Seven Sea*" complies with all of the regulations of the American Bureau of Shipping (ABS), International Marit-'me Organization (IMO) and the United States Coast Guard (USCG).

HYDRJGEN SULFIDE PRECAUTIONS

The geological formations that will be encountered in the Plan wells are not expected to contain hydrogen sulfide (H S).

POLLUTION-PREVENTION FEATURES

All sewage, waste, and chemicals are collected and transported to shore for disposal.

DRILLING OPERATIONS

All drilling operations will be conducted under the provisions of 30 CFR, Part 250, Subpart D, and other applicable regulations and notices, including those regarding the avoidance of potential drilling hazards and safety and pollution prevention control.

WELL ABANDONMENT

The well(s) will be drilled, evaluated, and either temporarily or permanently abandoned in accordance with 30 CFR, Part 250, Subpart G. If further explo. tion, development, or production activities are to be undertaken thereafter, appropriate plans will be submitted.

Attachment 3

LP9021401 - OOOu.0.0

Y = » , 2 « , 4 8 O . 0 O

BLOCK 764

OPEN

Ys10,216,800.00 BLOCK 891

SOI

O APPROVED LOCATIONS

© SUPPLEMENTAL PROPOSED LOCATION ( E )

• DRILLED

NOTE '. CURRENTLY D R I L L I N G NO. 3 S T - 1

SURFACE LOCATION

A 3743 ' FEL fc 82" FSL OF BLK. 763 B 3246 ' FEL & . 328 ' FSL OF BLK. 783 C 5122 ' FEL A 1040' FSL OF BLK. 763

989 ' FWL A 7532" FSL OF BLK. 807 2462" FWL A 4173 ' FNL OF BLK. 807 2462 ' FWL A 4253 ' FNL OF BLK. 807

FEL A 2W63' FNL OF BLK. 807 6142 ' FWL A 417 ' FNL OF BLK. 807

ATTACHMENT 4 SMELL OFFSHORE INC.

PROPOSED SURFACE LOCATIONS fc BATHYMETRY

SUPPLEMENTAL PLAN OF EXPLORATION

SOI OCS-6 7958 BLK. 763

SOI OCS-6 7969 BLK. 807

M I S S I S S I P P I CANYON

BLOCKS 7 6 3 . 807 OFT|MON( LOUISIANA

4000" mmi

"T^mmmmmmmm^r

DRILLINC MUD COMPONENTS AND ADDITIVES SUPPLEMENTAL PLAN OF EXPLORATION

SOI OCS-C 7958, MISSISSIPPI CANYON BLOCK 76S SOI OCS-G 7963. MISSISSIPPI CANYON BLOCK 807

OFFSHORE LOUISIANA

I . ITEMS USED ON A ROUTINE BASIS

IDF BARIOD M-I MILPARK DESCRIPTION

luK BAR IDF WYOMINC BENTCNITE IDF LIGNITE IDF CLS CAUSTIC SODA ALUMINUM STEARATE LIME IDF CAUSTICIZED SOOA ASH SODIUM BICARBONATE IDF HI-TEMP IDF DRILLINC DETERGENT IDF DEFOAM IDF HYMUL IDF CMC SALT

IDF STARCH IDF AP-21 IDFLO DRI SPAC/IDF-FLR GYPSUM

IDTEX HYDROCARBON IDFREE IDLUBE MICA IDP WALNUT HULLS

BARITE/BARIOD AQUAGEL CARBONOX Q-BROXIN CAUSTIC SODA ALUMINUM STEARATE LIME CC-16

SODA ASH

BICARB BARANEX CON K T . BARA-DEFOAM I AKTAFLOS CMC OR CELLEX SALT IMPERMEX CYPAN, WL-100, POLYPAC DEXTRID DRISPAC OR PAC GYP

HME/SUPERDRILL

BLACK MACIC SUPERMIX (SFT) ENVIRO-TORQ MICA TEX WALL-NUT

M-I BAR M-I CEL TANNATHIN R D - l l l CAUSTIC SODA ALUMINUM STEARATE LIME CAUSTILIC SODA »3H BICARP RESINEX I I DD DEFOAM-X DMS CMC SALT MY-LO-JEL SP-101 POLY SAL POLY-PAC CYP

HME/SUPERDRIL

PIPE-LAX W LUBE-106. I »r .33 MICA (C OR f ) NUT PLUC (C, M, OR F)

BARITE/MILBAR MILGEL L1CCO UNI CAL CAUSTIC SODA

ALUMINUM STEARATE LIME LIGCON SODA ASH

BICARB CHEMTROL-X/FILTREX M.D. W.O. DEFOAM/LD-8

CMC SALT MILSTARCH CYPAN OR WL-100 PERM-LOSE DRISPAC CYP POLYDRILL NEW-VIS HME/SUPERDRIL

BLACK MAGIC SUPERMIX (SFT) LUBRISAL MIL-MICA MIL PLUC

BARITE (BARIUM SULFATE) BENTONITE LICNITE BLENDED LIGNOSULFONATE SODIUM HYDROXIDE ALUMINUM STEARATE CALCIUM HYDROXIDE BLENDED LICNITE/CAUST1C SODIUM CARBONATE BICARBONATE OF SODA SELECTED POLYMER BLEND DETERGENT DEFOAMER (USUALLY ALCOHOL BASED) NONIONIC MUD SURFACTANT SOOIUM CARBOXY METHYL CELLULOSE SODIUM CHLORIDE PREGELATINIZED STA RCI" SODIUM POLYACRYLATE ORGANIC POLYMER POLYANIONIC CELLULOSE GYPSUM (PLASTER OF PARIS) SULFONATED POLYMER POLYSACCHARIDE POLYMER GILSONITE (TREATED) - NATURAL

MUD CONCENTRATE FOR SPOTTING FLUID ORGANIC LUBRICANT MICA-FLAKES GROUND WALNUT OR OTHER NUT HULLS

Attichawnt B-A

LP9021401 - 0007.0.0

IDP BARIOD M-I MILPARK DESCRIPTIOH

SODIUM CHROMATE IRONITE SPONGE ZINC CARBONATE IDFLOC SAPP

KOH KCL MP-1 BEN-EX SOLTEX

SODIUM CHROMATE IRONITE NO-SULF

E-Z MUD SAPP

KOH KCL MF-1, BORUFLOC BEN-EX SOLTEX

I I . OIL BASE MUD ADDITIVES

INTERDRILL EMUL INTERIMiLL FL INTERDRILL DEFLOC INTERDRILL ESX INTERDRILL VI STONE IDF QUICK LIME VISTA ODC

INVERMUL E-Z MUL DRILTREAT DURA TONE GEL TONE LIME VISTA OOC

SODIUM CHROMATE IRONITE SULF-X

POLY-PLUS

SAPP

KOH KCL MF-1 GELEX SOLTEX

VERSAMUL

VERSAPI IN VERSATROL VERSAGEL LIME/QUICKLIME VISTA ODC

SODIUM CHROMATE IRONITE MIL CARD SEPARAN SAPP SHALE TROL KOH KCL MF-l BEN-EX SOLTEX

CARBO-TEC L CARBO-MUL

CARBO-GEL LIME VISTA ODC

SODIUM CHROMATE SYNTHETIC IRON OXIDE, HS SCAVENGER HS SCAVENGER (ZINC CARBONATE) POLYACRYLAMIDE POLYMER SODIUM ACID PYROPHOSPHATE ORGANO/ALUMINUM COMPOUND POTASSIUM HYDROXIDE POTASSIUM CHLORIDE (POTASSIUM) SELECTIVE FLOCULANT CLAY EXTENDER WATER SOLUBLE SULFONATED ASPHALT

PRIMARY EMULSIFIER SECONDARY EMULSIFIER DISPERSANT HIGH TEMP. STABILIZER, FILTRATE CONTROL VERCOSIFIER WEIGHT SUSPENDING AGENT CALCIUM HYDROXIDE LOW TOXICITY MINERAL OIL (DIESEL

SUBSTITUTE)

I I I . NON ROUTINE ADDITIVES

TRADE NAME SUPPLIER DESCRIPTION

HF-100 A-25 BIOSPOT XC POLYMER ACETIC ACID

HYDRA FLUIDS CESCO CHEMICAL MILPARK KELCO MILPARK

POLYALCOHOL/WATER BLEND - LUBRICANT SURFACTANT/WATER BLEND FOR STUCK PIPE SURFACTANT/WATER BLEND FOR STUCK PIPE XANTHAM CUM (POLYSACCHARIDE) GLACIAL ACETIC ACID SOLUTION

IV. METHOD OF DISPOSAL:

A l l watar baaa mud and aud additives w i l l be disposed of overboard in to the Gulf of Mexico provided the Material to be discharged meets the t o x i c i t y l l a i l t specif ied ln the USEPA NPDES Ceneral Perait No. GMC28XXXX. Any f l u i d containing free o i l w i l l be tranaported to a 29 B a l t e f o r disposal. Dlaaai w i l l not be used ln muda to be discharged, except for spott ing to free stuck pipe ln accord with Part I .A .1 (c ) of the permit. A l l d r i l l cu t t l nga , sand, and othar wel l solids f ron d r i l l i n g wi th water based nuds w i l l be discharged overboard. Cuttings f r o a d r i l l i n g w i t h o i l based nud and dieael p i l l s and buffers w i l l be hauled to 29 B s i t e for disposal.

Revised 3/9/90 JML Attachment ?-A (Cont'd)

LP9021401 - 0008.0.0

MUD ANO CUTTINGS DISCHARGE VOLUMES SUPPLEMENTAL PLAN OF EXPLORATION"

SOI OCS-G 7956, MISSISSIPPI CANVON BLOCK 763 SOI OCS-G 7963, MISSISSIPPI CANVON BL0CO07

OFFSHORE LOUISIANA

All mud and cuttings will be discharged in compliance with the NPDES General Permit GMG 280000 for Discharge of Effluents. Nr. fluids containing free oil will be discharged. Daily discharge rates will vary over the l i f e of the well. Assume that the discharge rate is uniform over the l i f e of the well.

Assume that the cuttings volume discharged is calculated hole volume times 4.

Assume that the mud volume discharged is calculated hole volume time* 11 (accounts for dilution to maintain rheological properties). These values are taken from Walk, Haydel and Associates Inc. (1988).

An example is attached (Attachment 8-C).

LP9021401 - 0009.0.0

Attachment 8-B

MUD AND CUTTINGS DISCHARGE VOLUMES SUPPLEMENTAL PLAN OP EXPLORATION

SOI OCS-G 7958, MISSISSIPPI CANY0N"BTD"CK 763 SOI OCS-G 7963, MISSISSIPPI CANYON 6LOCK"8Q7

OPPSHORE L0UlST*NA~

DEPTH (FT.)

DEPTH BML (FT.)

CASING SIZE (IN.)

HOLE SIZE JtN.)

VOLUME (BBL.)

200 36 3c 250

5,400 0 20 26 1,450

6,500 J 16 22 520

10,200 7,200 13 3/8 17 1/2 1,100

*13,200 10,200 11 3/4 14 3/4 635

i7,000 14,000 9 5/8 12 1/4 j j t j

21,000 18,000 7 5/8 8 1/2 280

23,000 20,000 TD 6 1/2 85

* Contingent.

Total Hole Volume: 4,875 bbl . Total Cuttings Volume: 19,500 bb l .

Total Mud Volume: 53,625 bbl .

Attachment 8-C

LP9021401 - 0010.0.0

SOI's "Oil Spill Contingency . ." w-„ approved by the MMS on November 4, 1987. lhe latest revisions to the "Oil Spill Contingency Plan" were submitted to the MMS for approva1 on August 9, 1989. The dri l l i n g plans proposed herewith w i l l rely primarily •>•• the spill equipment stored at the Clean Gulf Associates base in "en ce. Louisiana. Section I I I of the approved plan lists available equipment ac this base plus other bases fr(.i which additional eauipment. can be c>awn. Section I I lists the preventive measurps co be taken to minimize oil spills and the reporting proctdures to h : roi lowed in the event the*, one occurs. Section VI provides a de .ailed discussion of the clean-up procedures to be initiated, in .luoirg a listing of the personnel who make up tt»» ciea**-up organization. l*.e training of thesr. personnel is summarized in Section XII.

OIL SPILL RESPONSE TIME

Activity Time Requirad (Hours)

Make calls (e. vessel, etc.

1

Muster resoonse t fam at V nice

Move equipment

Boat run (14 nautical miles) from West Delta 30 to Venice (M/V "Masco 8" with l?-kn«t maximum speed)

Load out of equipment (RU)

Channel run co open water (SW Pass) 3

Run time to s p i l l locat ion at 12-knot maximum speed for 60 nautlce Hes (including deployment)

5

RESPOND: TIME (riojrs) 14

( )* denotes nrv in cr i t i c a l path and not included in Response T-.me.

Attachment 9

LP9021401 - 0011.0.0

A review of the MMS Spi 11 Trajectory Anal/sis for tr-3 subject lease blocks (1 c\nch s i t e C-08) shows the , collcwing probabi l i t ies of a major • ipi l l s i r ' i „g the I i i t e d land ."tgaints iC oays of the s p i l l :

SOI would u t i l i ze the f u l l resources o ' Clem Gulf Associates, as well a, the other resources iden t i f i ed in the SOI 'O i l Spi l l Contingency Plan", to respond ?h"*ild th is type of sp^l l occur. This includes seeking approval for Corexit 9527 diapersan* apn" i ' . i t ion i f 'ne resources threatened j u s t i f y sucn a reques'. T!te disf jer jant u*.e decision w i 1 ! be guided by the MIRG Model.

The strategies and response modes to protact resource' in the event of a sp i l l threat are s t t ted in Voiume H ° f the Clear Gulf Associates Operations Marual.

Reference: '(,) 'V f l f t EIS for : = . s 123 and 125 published March 1989, Pages IV-36 \t.-ough 39 and (B) Cleen Gulf Associates Operations Manual, Volume I I , Maps 6 and / .

Lt<nd Segment Probabi1ity (%)

*7 Lafourche, Louisiana lb. Jefferson, Louisiana 19. v ' aquemines, Louisiana

2 1 16

Attachment 9 (Cont'd.)

LP9021401 - 0012.0.0

PROJECTED AIR EMISSIONS SUPPLEMENTAL PLAN OF EXPLORATION

OCS-G 7958, MISSISSIPPI CANYON BLOCK 76J OCS-G 7963, MTSraiPPI CANVON BLOCK 807

OEFSr. ftT~~LOTifS"TA"NA"

DRILLING PHASE

Table 4-2 of EPA 450/3-77-026 report en t i t led "Atmospheric Emissions from Offshore Oil and Gas Development md Production" shows that for a typical d r i l l i n g r i g , 3400, 1900, and 300 ho-cepower are required for (1) d r i l l i n g ; (2) t r ipp ing , casing, and coring; ?nd (3) surveys ana .ogs, respectively. Table 4-3 of th is same report provides a scenario of a 30-day, 10,000-foot well indicating a tota l horsepower usage of 597,200 hp-hr. I f *« assumed that the same breakdown of r ig ac t i v i t y and power require..:.us is applicable to the proposed exploratory program, then the power LS-g f w i l l be approximately 1,791,600 hp-hr /wel l . Dased on the emission rates Vor o i l - f i r e J reciprocating engines (Table 4 -4) , '.ne following gaseou? emissions wou'o *e generated for each well uu. ' iy the 140-day/well d r i l l i n g operation:

DISCHARGE (METRIC TONS) _ PER WELL ANNUAUTAIi

N0X 39.59 103. i

so2 2.67 7.0

HC 1.32 3.4

CO 5.80 15.1

Particulates Unknown Unknown

WATER TRANSPORTATION

Tin.- .'lorsepower usage of the two vessels to be used in connection with th is opeM'ion is as fol lows:

190 Ft. Ce. TO Vessel

3900 hp x .80 (load factor) x x 1 4

m ^ ^ s x 3.0 months = 1,781.384 hp-hr.

Attachment 10-A

LP9021401 - 0013.0.0

z

190 Ft. au-idby Vessel

1300 hp x .80 (load factor) x 2 ] a

h

y [ ' x 90 days

390C hp A .80 (load factor) x x 90 days

= 2,15:,800 hn-br.

?80,800 np-hr.

TOTA = 4,214,984 hp-hr.

Based on Tault 4-4, the gaseous emissions generated by water iranspoi Lation are as follows:

DISCHARGE PER WELL

(METRIC T"'NS) ANNUAL R7T

NO. 59.88 242.9

so2 4.04 16.4

HC 2.00 8.1

CO 8.77 35.6

Particulates unknovn Unknown

INCINERATOR OPERATION

The l?.Hi BARNES dr i l l i n g rig is equipped with an incinerator for disposal of waste o l from the internal combustion engines on the rig. The emissions below were estimated using the EPA Report AP-42, "Compilation of Air Poliutait Emission Factors" for fuel c i l combustion. Table 1.3-1, dated August 1982, at a combustion rate of 10 gallons per hour.

DISCHARGE

N0V

so2

HC

CO

Particulates

RGE (METRIC TONS) ANNUAL RATE

2.4

6.9

<C.i

0.2

O.H

Attachment 10-A (Cont'd.)

11-9021401 - 0014.0.0

"••wcBiMMrr. itt**m-—

3

TOTAL ANNUAL DISCHARGE (METRIC .V• SJ.

CO 50.9

TSP, S02, N0X, VOC 390.8

Emission Exemptions

The proposed location is 47 miles from the nearest shoreline. Therefore, the emission • <empt1on (E) for the various pollutants 1s as follow*:

CO E « 3400 (47) 2 / 3 = 44,280 Tons/rr.

TSP

so2

N0X E = 33.3 (47) « 1,565 Tons/Yr.

The total annual discharge does not exceed the ->xemption totals above; consequently. no further air quality review i .equired for the envisions from the operations in connection w this plan.

EMISSIONS' CATION AND ELEVATION

The diesel exhaust stacks are located 34.5 feet above the waterline under driiling conditions

Attachment 10-A (Cont'd.)

LP9021401 - 0015.0.0

SUPPLEMENTAL PLAN OF EXPLORATION SOI OCS-G 7958, MISSISSIPPI CANVON BLOCK 763 SOI OCS-G 7963, MISSISSIPPI CANYON BLOCK 807

OFFSHORE LOUISIANA

ONSHORE SUPPORT FACILITY

The onshore support base for this activity will be SOI's existing Venice Tenninal. This facility is located on the Mississippi River near Venice, Louisiana, approximately 35 miles upriver from the Gulf of Mexico. The physical plant covers 14 acres and includes 1,000 linear feet of waterfront, 3,000 square feet of office space, 3,200 square feet of personnel quartering space and 7,200 square feet of covered warehouse area. One 45-ton c**anc and two fork trucks are used for material handling operations. No expansior. u r the Venice Tenninal will be squired for this activity. In addition to the above, tubular goods will usually be shipped by land to Venice from one of the contract warehouses located in Morgan City, Louisiana, which will also require no expansion. Also, while personnel transported by helicopter will be picked up and returned to SOI's Venice Terminal, both Air Logistics and PHI operate bases at Venice for refueling and maintenance.

SUPPORT VESSELS

ITEM SIZE OR MODEL USE TRIPS PER WEEK

Boat 190' ± Cargo 3 or 4

Boat 190'± Standby NA

Helicopter Bell 206B, 212, 214, or 412

Crew Change and Misc. 18 to 22

LP9021401 - 0016.0.OK

Attachment 11

LEASE V IC IN ITY 8> TRANSPORTATION ROUTES

SUPPLEMENTAL PLAN OF EXPLORATION 301 OCS- 3 7958 BLK.763 SOI 0CS- -7963 BLK.607

MISSISSIPPI CANYON BLOCKS 763 ,807 OFFSHORE LOUISIANA

10

MILES