OCS-G - 105 Lo

' *

I

Decenber 23, 1967

Texaco Inc. Attention: Mr. J . A. Newton Post Office Box 60252 New Orleans* Louisiana 70160

Gentlemen:

Reference fs nade to your Init ial Plan of Exploration and Environmental Report received Decenber 10* 1987, for Lease OCS-Q 7036, B'ock 204, Green Canyon Area. This plan Includes the ac ities proposed for Wells A, B, and C.

In accordance with 30 CFR 250.34, revised December 13, 1979, and our letter dated January 29, 1979, this plan 1s hereby determined to be conplete and 1s now being considered for approval.

Your plan control number 1s N-2869 and should b« referenced 1n your communi­cation and correspondence concerning this plan.

Sincerely yours.

i

In Reply Refer Toi. Fp-2-1

fOrig. Sgd.) A. Donald Giroir

0. J . Bourgeois Regional apery 1 sor Field Operations

bcci Lease OCS-G 7036 (OPS-3-2) (FILE ROOM) /OPS-3— w/Public Info. Copy of the plan and ER (PUBLIC RECORDS)

MDJoseph seek 112/17/671 poecom

J A Newton Land Manager Southern Exploration Division

Taxaco USA PO Box 6d2S2 New Orleans LA 70160 504 595 1702

November 30 4 1987

Regional Supervisor F i e l d Operations Minerals Management Service 1201 Elmwood Park Blvd. New Orleans, Louis iana 70123-2394

261962 - FEDERAL LEASE OCS-G 7036 GREEK CANYON BLOCK 204 OFFSHORE LOUISIANA PLAN OF EXPLORATION AND ENVIRONMENTAL REPORT

Dear S i r :

I n accordance with the provisions of T i t l e 30 CFR 250.34-1, and your le t ter of January 29, 1979, and October 22, 1981, we hereby submit for your app 3val nine copies each of a Plan of Explorat ion with Environmental Report for the captioned lease. Should any addit ional information be required, please contact Mr. D. F . Cramer by telephone at (504) 595-1249.

Your ear ly approval of this plan w i l l be appreciated.

Yours very t r u l y ,

J . A . NEWTON Land Manager Southern Exploration Division

DFC

tdw POE/2

Attachments

TABLE OF CONTENTS r '

, PAGE

EXPLORATION/PLAN i

Description of and Schedule

for Exploration A c t i v i t i e s 1

Description of Rig and Safety Equipment

Geophysical Equipment 2

Location of Proposed Wells "* 2

Current Subsurface I n t e r p r e t a t i o n 2

Oil S p i l l Contingency Plan * 3

Onshore Support Bases 3

D r i l i i n g Mud Components and Mud Additives .... 4

Projected A i r Emissions Report , 4

D r i l l i n g Hazards Assessment 4

Archaeological Assessment 7

Lease S t i p u l a t i o n 7

Environmental Report and A i i Quality Review

Description of the Proposed Action 1

Description of the Affected

Environment and Impacts 3

Unavoidable Adverse Impacts 9

References 12

Coastal Zone Management Consistency C e r t i f i c a t i o n 13

Appendix

PLAN OF EXPLORATION TEXACO INC.

FEDERAL LEASE OCS-G 7036 GREEN CANYON BLOCK 204

NOVEMBER, 1987

PLAN OF EXPLORATION

TEXACO INC.

FEDERAL LEASE OCS-G 7036

GREEN CANYON BLCCK 204

Description of and Schedule for Exploration A c t i v i t i e s

Texaco Inc.'s e x p l o r a t i o n plan for Green Canyon Block 204

includes the d r i l l i n g and completion of three (3) exploratory

w e l l s . The f i r s t w e l l i s scheduled to commence on or about

February 1, 1988. The commencement dates for the remaining wells

have not been scheduled. Operations for the three (3) wells are

expected to l a s t approximately 293 days.

Description of Riq and Safety Equipment

Depending on the a v a i l a b i l i t y of r i g s , the propoaed wells w i l l be

d r i l l e d with a semi-submersible d r i l l i n g r i g s i m i l a r to the

"Penrod Rig No. 78." Included i n the Appendix are the r i g

specifications f o r the "Penrod Rig No. 78." The specifications

f o r the actual d r i l l i n g vessel and safety equipment to be used

w i l l be submitted along with the appli c a t i o n for permit to d r i l l .

The r i g used t o d r i l l the exploratory wells under t h i s plan w i l l

contain and maintain a d i v e r t e r system, Y lowout-preventers,

a u x i l i a r y equipment, and mud t e s t i n g ano monitoring equipment.

D r i l l i n g operations w i l l be conducted i n a manner so aa to

maximize p o l l u t i o n prevention i n accordance with OCS Order No. 7.

* »

A l l other safety and control equipment w i l l be used in accordance

with other applicable OCS Orders. r

1 i Should| a w e l l indicate the presence of commercial reserves, the

well w i l l be temporarily bandoned i n accordance with CX3

Order No. 3.

Geophysical Equipment

A l l geophysical work p r i o r to the commencement of exploratory

d r i l l i n g operations has been completed. No other geophysical

work i s presently planned for the lease. I f i t i s subsequently

determined that additional work i s required, conventional CDP

r e f l e c t i o n methods w i l l be used.

Location of Proposed Wells

Included i n the Appendix are the V i c i n i t y Map and Location Plat.

The V i c i n i t y Map shows the l o c a t i o n of Green Canyon Block 204

r e l a t i v e to the Louisiana shoreline. The Location Plat provides

the surface and bottom hole locations, proposed t o t a l depth for

each w e l l , and the water depth at each surface location.

Current Subsurface Geologic and Geophysical I n t e r p r e t a t i o n

Included in the Appendix are the subsurface structure map and

geologic cross section which r e f l e c t the current subsurface

i n t e r p r e t a t i o n of the geologic and geophysical data in the area.

These data are considered c o n f i d e n t i a l by Texaco Inc. and should

be exempt from disclosure under the Freedom of Information Act 5

- 2 -

U.ScC. '552. These data are intended for use by. authorized

Minerals! Management Service personnel only. r

' I O i l Spil/1 Contingency Plan

I n accordance w i t h OCS Order No. 7, Texaco Inc. has on f i l e with

the Minerals Management Service an O i l S p i l l Contingency Plan

which has been approved by the Minerals Management Service by

l e t t e r of September 24, 1987.

Texaco Inc. i s a member of Clean Gulf Associates (CGA) and, as

such, has access to a stock-pile of o i l s p i l l containment and

c)ean-up materials use in the offshore and estuarine areas.

There are several v. bases which are s t r a t e g i c a l l y located along

the Texas, Louisiana and Florida coastlines of the Gulf of Mexico

t h a t have the personnel, material and equipment necessary to

c o n t r o l and clean up o i l s p i l l s . The closest CGA base at Grand

I s l e , Louisiana, i s within 106 miles of the proposed d r i l l s i t e s .

Based on the distance from t h i s CGA i n s t a l l a t i o n to the proposed

d r i l l s i t e s , we estimate a t r a v e l and deployment time of approxi­

mately twelve (12) hours.

Onshore Support Bases

Two onshore bases w i l l be used to support the proposed opera­

t i o n s ; one in Venice, Louisiana and the Texaco dock at Morgan

C i t y , Louisiana. From these bases personnel, supplies and ma­

t e r i a l s w i l l be transported by boat t c the proposed d r i l l s i t e s .

A d d i t i o n a l l y , personnel may be transported to and. from the d r i l l

s ites 'by hel i c o p t e r s which are based at Petroleum Helicopter,

Inc.'s f a c i l i t i e s at Amelia, Louisiana and Morgan C i t y ,

Louisiana 1. /

D r i l l i n q Mud Components and Mud Additives

Included i n the Appendix are l i s t i n g s of the d r i l l i n g mud com­

ponents and roud additives which are normally usecl during d r i l l i n g

operations.

Projected A i r Emissions Report

The projected a i r emissions re p o r t , which i s included in the

Appendix, r e f l e c t s the estimated emissions of t o t a l suspended

pa r t i c l e s (TSP), sulf u r dioxide (S0 2), nitrogen oxides (N0 X) ,

carbon monoxide (CO) and v o l a t i l e organic compounds (VOC) for a

293 day period of continuous operations. Upon comparison of the

estimated emissions to the emissions calculated using the exemp­

t i o n formulas, i t was determined that the proposed exploration

a c t i v i t i e s were exempt from f u r t h e r a i r q u a l i t y review. Based on

these data, i t has been determined that these planned a c t i v i t i e s

w i l l not cause any s i g n i f i c a n t e f f e c t on the a i r q u a l i t y of the

onshore areas.

D r i l l i n g Hazards and Archaeoloqical Assessment

An archaeological hazards survey was conducted over Green Canyon

Block 204. The data collected from t h i s survey included

magnetometer, side scan sonar, sparker and pi.nger p r o f i l e s .

THese survey data along with available CDP seismic and velocity

p r o f i l e s were reviewed to evaluate the following proposed d r i l l

s i tes- fojr potential d r i l l i n g hazards. i

Location "A" § 7400' PNL & 800' FEL of GC Blk. 204;

Location "B" § 2450' FNL & 4750' FEL of GC Blk. 204; and

Location "C" § 5800' FSL & 7900' FEL of GC Blk. 204.

At Location "A" the water depth is 2700 feet. The seafloor is

smooth and slopes to the northwest at an approximate rate of 320

feet per mile. Near surface bedding is undetermined at this

time.

Evidence of near surface faulting is observed near the well site.

The nearest fault i s 900 feet from the location and is down to

the southwest. The well bore will intersect shall faulting at

approximately -3700 feet. Shallow "bright spots" are observed at

depths of approximately -4450 feet.

Another indication of shall hazards is that the subbottom i s in a

state of general gas saturation. CDP velocity data indicates an

interval velocity decrease at 2.175 seconds, possibly indicating

top of abnormal pressure at -5750 feet.

The wells on Green Canyon Blocks 116 and 117 encountered abnormal

pressure at 7000 feet and 7012 feet, respectively. Care will be

- 5 -

taken whife d r i l l i n g through tne shallow "bright, spot" at -4450

feet : i j

1 . >

At Locatioi/ "B" the water depth i s 2862 feet. The seafloor is i

smooth and slopes to the west at an approximate rate of 106 feet

per mile. Near surface bedding is undetermined at this time.

Evidence of near surface faulting is observed near tbe well s i t e .

The nearest f a u l t is 1300 feet from the location and is down to

the southwest. The well bore w i l l intersect ohall faulting at

approximately -5850 feet. Shallow "bright spots" are observed at

depths of approximately -4210 feet.

Another indication of shall hazards is that the subbottom is in a

state of general gas saturation. CDP velocity data indicates an

inte r v a l velocity decrease at 2.30 seconds, possibly indicating

top of abnormal pressure at -6150 feet.

The wells on Green Canyon Blocks 116 and 117 encountered abnormal

pressure at 7000 feet and 7012 feet, respectively. Care w i l l be

taken while d r i l l i n g through the shallow "bright spot" at -421C

feet.

At Location "C" the water depth i s 2890 feet. The seafloor is

smooth and slopes to the northwest at an approximate rate cf 176

feet per mile. Near surface bedding is undetermined at this

t ime.

Evidence of ifear surface f a u l t i n g i s observed near the well s i t e .

The nearest f a u l t i s 1900 feet from the location and i s down to r

the northeast. The well bore w i l l intersect shall f a u l t i n g at

I approximately /-3790 feet. Shallow "bright spots" are served in

< t h e v i c i n i t y o f t h e proposed l o c a t i o n .

Another i n d i c a t i o n o f s h a l l i . r ^ s t h a t the subbottom i s i n a

s t a t e of g e n e r a l gar s a t u r a t i o n . CDP v e l o c i t y data i n d i c a t e s an

i n t e r v a l v e l o c i t y decrease a t 1.90 seconds, p o s s i b l y i n d i c a t i n g

t o p o f abnormal p ressure at -4925 f e e t .

The w e l l s on Green Canyon Blocks 116 and 117 encountered abnormal

p ressure at 7000 f e e t and 7012 f e e t , r e s p e c t i v e l y . Care w i l l be

t e k e n w h i l e d r i l l i n g th rough the sha l low " b r i g h t spot" a t -3790

f e e t .

A r Taeoloqi *>ssessme i t

There are no known a r c h a e o l o g i c a l or c u l t u r a l resources l oca t ed

on Green Canycn Block 204. The p r o b a b i l i t y o f oec- ?nce a..'J r e ­

cove ry of an a r c h a e o l o g i c a l r e source at the proposed d r i l l s ices

i s minuscule .

Lease S t i p u l a t i o n

Texaco I n c . w i l l comply w i t h t he p r o v i s i o n s o f Lease S t i p u l a t i o n

No. 3 - M i l i t a r y Warning Area .

DF~:tdw POE/3 11/17/87

7

I

ENV!RONMIINTAL RFPORT

ANO

AIR QUALI I V REVIEW

FOR COASTAL MANAGEMENT CONSISTENCY OU' iNATION

BY THE STATE OF LOUIS ANA ON OPERATION?

PROPOSED IN THE PLAN OF , Vpj.OF ' TION FOR

GULF OF MEXICO L?A ,CS-G 7036

GREEN CANYON BLOCK 204

OCTOBER 1987

Prepared b y :

Vincent F. Cotton*. P.E.

Texaco Inc .

Post Off ice Box 60252

New Or leans, LA 70i&0

OQ4) 595-1471

* DESCRIPTION OF PROPOSED ACTION

i

Tha~ report addressee fha activities proposed by Texaco Inc. for

Grson Cajiyon Block 04 ;cv»--G 703c*/. The approximate location of

the proposed activity is presenter1 J.a Figure 1. a general

vicinity map ol Outer Continental : heli (OCS; le iaa areas os.£

the cosir of LouisAana.

I t antic-paced tnat a rem: ~»nbmerrible r t j v * l l be movad on

the lease .. 1 Lhr»*e '.3) ex *JLO*t '-.>ry wells will be drilled The

surface lo-at-rms :>t the wells and .'dditional information regard­

ing specific act j. vities prcr-jjHF.d by Texaco Cor this block are

included in the PJ-n of Explori.'wion to which *->is reperc is

attached.

The proposed activitiee will be carried out by Texaco Inc. vith a

guarantee of *:ht following

1. The best available ».\ i rafest tec; ^logies will be utilized

throughout the project This deludes meeci: uJ applicable

requirements for equipment types, general project layout,

safet: syjtvw.li, equipment and mot*i*:o ing H\ atftjns.

Dr;WNG NOT TO SCALE

2. Ai l operations w i l l be covered by a Minerals Management i

i

Service (MMS) approved Oil S p i l l Contingency Plan.

3. All/ applicable Pectoral, Stata, and local requirements regard­

ing a i r emissions, wcter qualit\ , and discharge for the

propcsed a c t i v i t i e s , as well as any ov ies permit conditions,

vxl 7 be ~ )aplit*d vith.

A. Travel Modea, Routes, and Frequencies

In addition to the d r i l l i n g rig, service bo&ts and helicopters

w i l l be used x.o transport equipment, material, personnel, ar/i

supplifb to the d r i l l s i t e . Texaco exp-tcts to operate '-he

service boat?: *ut of support base f a c i i i t i *£ in Morgan City and

Venice, Louisiana. I t i s estimated that the tervice boats w i l l

make three (3) to four (4) trip s each week. Helicopter f l i g h t s

to Green Canyon Block 204 w i l l average two (2) trips per week ani

w i l l originate fro-a and return too Petroleum Helicopters, Inc.'s

f a c i l i t i e s at Amelia or Venice Louisiana.

I t ib anticipated that the transportation vessels w i l l u t l l i r e

the most direct routes from their points of origin. However*,

because a vassal supporting the proposed exploration a c t i v i t i e s

may be schedule-o 'or other stops in the area the exact route for

each vessel on each particular t r i p cannot re predetermined.

- 2 -

B • Support Facilities an-' <ew Personnel

i

r

The proposed a c t i v i t i e s ,will use "wo 2) exist ing support bases,

rhe Texacoj dock at , Venice, Louisiana, and the Texaco dock at

Morgan City, Louisiana. The proposed a c t i v i t i e s w i l l not require

any expansion to these f a c i l i t i e s . Also, a l l proposed a c t i v i t i e s

w i l l be accomplished using existing employees and contract

personnel; therefore, no new en;.I oyment i s expected to be

generated as a r e s u l t of these a c t i v l ci-fs.

C New Support f'acil.ties

The pr posed exploration a c t i v i t i e s v i i i not require any new

support f a c i l i t i e s .

D. New or Unusual Technology

No new techniques or unusual technology w i l l be used.

E . Location of the Proposed Activities

The OVeen Canyon Area exploration a c t i v i t y i > located

approximately eighty-seven (87) miles ^outh of tho Louisiana

c >4-st a Timbalier Island. Figure 1 shows the locati o n of Block

2C^i i n r e l a t i o n t o the Gulf coast, as we l l as the geographic-

r e l a t i o n s h i p between Green Canyon Block 204 and the other OCS

leas.* areas.

- 3 -

» DESCRIPTION OF THE AFFECTED ENVIRONMENT AND IMPACTS

Commercial Fishing

Green Canyon Block 204 i s located approximately 87 miles from

shore where the water depth i s approximately 3000 feet. This

location beyond the outer l i m i t s of the principal f i n f i s h and

shell fishing areas (U.S.D.I., FEIS, Gulf of Mexico, 1986,

Visual No. 2 ) . The placement of a d r i l l i n g r i g on Block 204

w i l l remove a portion of the waters from use by commercial

fisheries. Additionally, the waters adjacent to the d r i l l

sites may become temporarily turbid due to d r i l l i n g

operations. These operations should have no significant

impact on commercial fisheries.

Green Canyon Block 204 i s clear of a l l designated ahipping

fairways and anchorage areas. The nearest fairway i s located

approximately 13 miles to the north (U.S.D.I., FEIS, Gulf of

Mexico, 1986, Visual No. 3). I t i s l i k e l y that marine ves­

sels supporting the a c t i v i t i e s proposed in Green Canyon Block

204 will u t i l i z e this shipping fairway to gain access to the

support bases. However, i t i s unlikely that the marine ves­

sels w i l l have a significant effect on fairway t r i n f i c . A l l

Shipping

i

marine vessel operations w i l l be i n accordance w i t h the U.S.

, coast Guard's regulations regarding navigation standards and j

the d r i l l i n g r i g and each marine vessel w i l l be equipped w i t h

a l l ujs Coast Guard required navigational saiety aids.

3. Small Craft Pleasure Boating, Sport Fishing and Recreation

The a c t i v i t i e s proposed i n the accompanying Plan of Explora­

t i o n are p r i m a r i l y confined to Green Canyon Block 204, which

is located approximately 87 miles from the Louisiana coast

and has a water depth of approximately 3000 feet. Since

Block 204 i s so far removed from shore, very l i t t l e pleasure

boating or sport f i s h i n g w i l l take place i n the area. Addi­

t i o n a l l y , the water depth precludes most recreational

a c t i v i t i e s such as sport diving. No adverse impacts on

pleasure boating, sport f i s h i n g or recreation are anticipated

as a r e s u l t of these proposed a c t i v i t i e s .

4. Cultural Resources

There are no known c u l t u r a l resources located i n Block 204.

Visual No. 4 from the F i n a l Environmental Impact Statement

(FEIS) (U.S.D.I., 1986) indicates Green Canyon Block 204 i s

located w e l l outside the U.S.D.I. designated h i s t o r i c and

pr e h i s t o r i c c u l t u r a l resources high p r o b a b i l i t y l i n e s . Also,

the geohazards survey conducted on Block 204 indicates no

cu l t u r a l resources were detected. Therefore, no impact on

cu l t u r a l resources i s expected.

5

5. Eco\>gically Sensit ive Features

• Ther^ are.no known e c o l o g i c a l l y sensitive features located on r

Green Canyon Block, 204 (U.S.D.I., FEIS, Gulf of Mexico, 1986,

Visual No. 3).. The nearest sensitive feature i s the Diaphus

Bank located approximately twenty-two (22) miles to the

west-northwest of Block 204. The proposed operations should

have no impact on t h i s feature.

The onshore support bases w i l l necessitate the passage of

marine vessels and h e l i c o p t e r t r a f f i c . These operations w i l l

have only minimal impact on the Louisiana shoreline.

6. Existing Pipelines and Cables

There i s no evidence of any cables or pipelines being located

. n Green Canyon Block 204.

7. Other Mineral Uses

The a c t i v i t i e s proposed f o r Green Canyon Block 204 w i l l have

no impact on other mineral uses.

8. Ocean Dumping

The major sources of ocean dumping related t c OCS hydrocarbon

exploration a c t i v i t i e s are d r i l l i n g muds and d r i l l c u t t i n g s .

D r i l l c u t t i n g s are brought to the surface by the d r i l l i n g

mud. These c u t t i n g s are separated and disposed of overboard.

After the exploratory d r i l l i n g i n Green Canyon Block 204 i s

- 6 -

complet .id, Texaco anticipates dumping i t s excess water-based

d r i l l i n g ' f l u i d (estimate 1000 bbls.). I f any oil-based mud

is used, i t w i l l be transported to shore for proper disposal.

Treated /domestic waste, d r i l l water, and kitchen and other

wastes w i l l also be disposed of at the proposed d r i l l s i t e .

There w i l l be no intentional discharge of any oily or hazard­

ous materials in violation of MAS or KPA regulations.

9. Endangered or Threatened Species

Federally l i s t e d endangered or threatened species which might

occur in the Green Canyon Area are the f i n whale, humpback

whale, right whale, sei whale, sperm whale, Kemp's ridley

turtle, green turtle, hawksbill turtle, leatherback turtle,

and loggerhead turtle (U.S.D.I., FEIS, Gulf of Mexico 1986,

pp 111-32) . Of the whale species, the sperm whale i s perhaps

the most common in the Gulf of Mexico. Generally, these

whales inhabit the waters of the continental slope and the

deep oceanic waters. The other species of whales may be con­

sidered uncommon in the Gulf. The leatherback turtle i s

believed to prefer the deeper oceanic waters while the other

species may be considered more coastal in nature. However,

i t i s possible that any of these turtle species may occur in

the project area at one time or another. L i t t l e or no impact

i s expected to any of these threatened or endangered species

by the proposed a c t i v i t i e s .

7

Federally l i s t e d endangered or threatened species expected to

occur jin the v i c i n i t y of the onshore bases are the bald r

eagle and brown pelican (U.S.D.I., FEIS, Gulf of Mexico,

1986-, (Visual No, 2). Also, the American alligator, which

occurs generally throughout the Gulf coast, is listed in

Louisiana as "threatened by similarity of appearance". The

bald eagle inhabits the area from Morgan City, Louisiana east

and north to the Mississippi River. The brown pelican inhab­

its the Barataria Bay area west of Venice, Louisiana. No

federally listed endangered plant species are known to occur

in the Louisiana coastal area.

The FEIS for lease sales 110 and 112 (U.S.D.I., 1986) dis­

cusses the occurrence and impact on endangered or threatened

species. The impacts discussed are primarily based on the

occurrence of oil s p i l l s . The impacts on various endangered

and threatened species wil l depend on the nature of the

spill, weather conditions, proximity of the s p i l l to the

species, tolerance of the species for o i l , and the response

time and effectiveness of the sp i l l cleanup and containment

services. Given these variables, the impact on the various

endangered or threatened species will vary from no effect to

serious.

- 8 -

The* experience of o i l and gas exploration in the Gulf of

' Mexico indicates that there i s a small probability of

occurrence of an, o i l s p i l l . The probability remains low

because of tne level of technology used by the industry to

insure safe and responsible operations. Texaco Inc., as a

prudent operator, w i l l take the necessary measures to reduce

the probability of o i l s p i l l s . Towards this, Texaco w i l l

comply with OCS Order No. 7 on pollution prevention and con­

trol, and has an approved O i l S p i l l Contingency Plan on f i l e

with the MMS. I t i s unlikely that the offshore or onshore

acti v i t i e s related to the Green Canyon Area exploratory

dr i l l i n g a c t i v i t i e s w i l l have any effect on the federally

listed endangered or threatened species.

In accordance with MMS guidelines, the i n i t i a l OCS Socio-Economic

Data Base Report for the support base f a c i l i t i e s u t i l i z e d by

Texaco Inc. w i l l be prepared for submission pursuant to the spe­

c i f i c parameters to be established by the MMS at a later date.

B. Socio-Economic Data

UNAVOIDABLE ADVERSE IMPACTS

The greatest threat to the environment would be caused by an o i l

s p i l l or well blowout. These occurrences can be reduced in

number by u t i l i z i n g trained personnel, adequate operational safe-

a * * " " " " ™ ill • e w e ^ ^ M e ^ a ^ e M ... . , • " — ^ ™ . II

guards, a-.d employing available safety and pollution control

systems. These .measures are standard operating procedure for 5 r

Texaco Inc. (

The unavoidable adverse impacts that w i l l occur as a r e s u l t of

th e proposed exploratory d r i l l i n g w i l l be few i n number and

temporary i n nature. The primary adverse impacts are a lo c a l i z e d

degradation of water and a i r q u a l i t y i n the v i c i n i t y of the

d r i l l i n g s i t e , the p o t e n t i a l obstruction to commercial and

recr e a t i o n a l f i s h i n g vessels, and the d i s r u p t i o n and/or k i l l i n g

o f benthic and/or pelagic org*, .isms during the location of the

d r i l l i n g r i g and dur i i - che disposal of muds, cuttings, domestic

wastes, and t r e a t e d sewage.

The discharge o f d r i l l c u t t i n g s and water-based muds w i l l r e s u l t

i n an increase i n water t u r b i d i t y , b u r i a l of benthic organisms,

and possible t o x i c e f f e c t on marine organisms i n the immediate

v i c i n i t y of the d r i l l i n g r i g . A reduction i n photosynthetic

a c t i v i t y and plankton population can also be expected as a r e s u l t

o f discharging. However, i t i s expected that the pelagic and

benthi c organisms w i l l repopulate the area r a p i d l y a f t e r d i s ­

charges end.

The proposed a c t i v i t i e s w i l l generate a small amount of a i r p o l ­

l u t a n t s due to the emissions from the diesel engines; therefore,

some d e t e r i o r a t i o n i n a i r q u a l i t y of the OCS operation area i s

expected. Trese c-ittissions a f f e c t only **Jie immediate exploration

a c t i v i t y s i t e and are r a p i d l y distvpatea Ly the atmosphere. A

Projected^ A i r Emissions Report has t - e n prepared f o r the proposed

a c t i v i t i e s anc* i s included i n t l i e appendix to the L--*r. of Explor-i

ation t i which t h i s Environmental Report i s -* p a r t .

Commercial and recreational f i s h i n g cculd affected by th'? pro­

posed a c t i v i t i e s , mainly i n rarnrj of *nterference. Although the

unavoidable adverse impacts could include some smothering of

s h e l l f i s h , reduction of the area presently available f o r unre­

s t r i c t e d f i s h i n g , and minimal f i n f . I s h k i l l i n g , f i s h i n g a c t i v i t i e s

would not be s i g n i f i c a n t l y affected.

x l -

R P F E R EN CES

United States Department of the I n t e r i o r , Minerals Management

Service, F i n a l Environmental Impact Statement, Gulf of

Mexico, December 1983.

2. United States Department of the I n t e r i o r , Minerals Managment

Service, F i n a l Environmental Impact Statement, Gulf of

Mexico, December 1984.

3. United States Department of the Interior, **:.\orals Management

Service, Final Environmental Impact ,:l Jtement, Gulf of

Mexico, November 1 J

4. United Statec Department of the I n t e r i o r , Minerals Manageraent

Service, I i n a l Environmental Impact Statement, Culf of

Mexico, November 1986.

VFC (das) sh 0RC/E1Q? 102287

- 12

r COASTAL ZONE MANAGEMENT C NSISTE^CY CERTIFICATION

Exploration Type of Plan

Green Canyon Block 2G4 Area and Block

OCS-G 7036 Lease Number

The proposed activities described in detail in this Plan comply with Louisiana's approved Coastal Zone Management Program and w i l l b«s conducted in a manner consistent with such Program.

Arrangements have been made with the States-Item in Baton Rouge, Louisiana, to publish notice of the proposed activities no later than sfpf^rf V, t t t t •

Texaco Inc. Lessee or Operator

ertifying Official

g6 In Date

APPENDIX

• II — i

Rig Specif ications for "Penrod Rig No. 78"

Vic in i ty Map

Tjocation Plat

Subsurface Structure Map

Geologic Cross Sections

Drilling Mud Components

Mud Additives

Projected Air Emissions Report

PENROD 78 INVENTORY ic SPECIFICATIONS i

» COLUMN STABILIZED. SEMI-SUBMERSIBLE VESSEL 1 i

Description The rig is of the catamaran type with two pontoons and six' columns. A combination of box girders, columns, and stay support the upper hull which itself is a box girder and contains machinery, storage and living spaces. 4 x 2000 HP azimuthing thrusters are in pontoons for mooring assist.

Dimensions

Length overall 102.00 m. 334.3 f eet

Width overall 70.2 m. 230.3 feet

Height from B.L. to main deck 43.0 m. 141.08 feet

Length of pontoons 102.00 m. 334.5 feet

Breadth of pontoons 16.2 m. 53.15 feet

Height of pontoons 7.6 m. 24.93 feet

Diameter of columns:

Corner I l . l m. 36.42 feet

Center 11.0 m. 36.09 feet

Length ot main oeck 77.0 m. • ' i f eet

Brepdth of main deck 65,C m. 2x3.25 feet

Operating draft 21.03 m. 70 ; eet

Transit draft 7.33 m. 24.05 feet

Air Gap 15.2 m. 49.87 feet

Displacement (operating draft) 33,400 L.T.

Displacement (transit draft) 22,383 L.T.

Water Depth Capacity 3000 feet

PENROD 78 INVENTORY, PAGE 1

Speed f

Normal transit speed in calm weather, smooth sea and water temperature not less than 15 degrees C, 100% MCR shail be 7 knots.

Supplies

Item

Accommodation Plperack Riser rack Sack mud & cement Bulk mud Bulk cement Liquid mud

Total .variable drill load Fuel oU Drill/fresh water Mooring load

Total

Capacity Spec. Weight

90 persons 307 m2 352 m2 320 m2 170 m3 170 m3 334 m3 (2100 bbls)

2.44 t/m2 1.22 t/m2 3.17 t/m2 2.5 t/m3 1.5 t/m3 2.4 t/m3

20 ppg

Max. Weight

1237 t. 429 t. 1014 t. 425 t. 255 t. 800 t.

2200 t. with II* CM. 1645 t. 1855 t. 775 t.

6475 t.

Rules and Regulations

The platform shall be designed and built in accordance with the rules of:

a. American Bureau of Shipping +A1, Column Stabilized.

b. United States Co'*st Guard MOD'J.

c. United Kingdom D.E.N. and D.O.T.

PENROD 78 INVENTORY, PACE 2

PENROD 78 INVENTORY

DRAWWORKS: ,

National l$25-pE Drawworks with sandline drum, emergency rotary drive and a PARMAC V-293 hydromatic brake. Drawworks driven by two EMD D-79 electric motors rated at 2000 hoisting HP.

POWER

Four EMD 16-643E9B diesel engines. Each is rated at 3320 continuous HP and drives a 2100 KW 60 volt AC generator.

Eight Intergrated Power Systems Corp., Model 2200M SCR units are used to supply DC power for drilling and mooring functions.

MUD PUMPS:

Two National Model 12P-160 Triplex mud pumps. Each pump independently driven by two EMD D-79 electric motors rated at 1600 HP and supercharged by an electric driven 6" x 3M centrifugal pump.

DERRICK AND ACCESSORIES:

Derrick Services International, Inc. 165* high x 40' wide base beam leg derrick with static hook load capacity of 1,300,000 lbs. wirh 14 lines strung to traveling biock. The derrick has the foUowing dynamic capacities:

1« With 300,000 lbs, of pipe racked in derrick (tripping) (a) 14 degree roll in 8 second period (b) 14 degree pitch in 8 second period (c) 20 feet total amplitude heave in 8 second period (d) 73 knot wind

Derrick Service International, Inc. Crown Block with rsht 60" • iamet sheaves grooved for l%" diameter wire line* Adjustable casing stabbing piatform.

RISER TENSIONERS:

Eight NL R.J; Equipment Extended Life Model, 80,000 lb. capacity units.

GUIDELINE TENSIONERS:

Four NL Rig Equipment, 16,000 lb, capacity units.

PENROD 78 INVENTORY, PAGE 3

TV LINE TENSIONERS: • 1 _

Two NL Rig Equipment, 16,000 ib. capacity units.

BOP HANDLING IYSTEM: i

One A-S Normar hydraulic BOP Carrier system with skid unit, auxiliary trolley and power unit. Capacity 200 tons.

TRAVEUNG BLOCK:

National Type 760H650 Traveling Block with 7 sheaves 60" diameter for IW* wire line 650 ton Capacity.

HOOK:

National Type H-650, 650 ton capacity.

SWIVEL:

National Type P-650, 650 ton capacity

DRILL STRING MOTION COMPENSATOR:

NL Rig Equipment Model 25/600 drill string compensator, 25 feet stroke and 600,000 pound compensating capacity.

ROTARY EQUIPMENT:

National Type C-495 rotary with kSYx table opening independently driven by an EMD D-79 electric motor through a National two speed transmission. Varco type MPCH drive bushing. Varco Type 27-HDP Kelly bushing with wiper assembly.

MUD MIXING:

Tv/o 6" x 51' ccntril igal mud miring pumps. Each p«*rrr> driven by a 100 HP AC eectric motor.

MUD SYSTEM:

950 bbl. active mud tanks, 500 bbl reserve mud storage, 330 bbL mud and cement water pre-mix and 60 bbl. capacity slug tank. All active and reserve mud tanks equipped with

PENROD 78 INVENTORY, PAGE 4

Brandt mud agitators. Desander unit with three 10" cones to IioHdle 1500 GPM. Desilter unit with sixteen 5 n cones to handle 1280 GPM. Two Br.->nd* dual screen shale shakers.

11,200* of 5" 0.b. 19.50*/ft. Grade E, Range 2 drill pipe with 6-3/*" O.D. 5" XH T J . 5,900* of 5" O.D. 19.50#/ft Grade G, Range 2 drill pipe with 6-3/8" O.D. 3" XH T J . 36-a" CD. x 2-13/16" I.D. drill collars 31' long with 6-5/8" API Reg. connection. 3 - Kelly saver subs 5" XH box and pin 2 - Cross over subs 5" XH box by ft" IF pin 2 - Ci oss over subs 5" XH box x 6-5/8" API reg. pin 2 - Cross over subs ft" IF box by 6-5/8" API pin 2 - Bit subs 6-5/8" API reg. box by 6-5/8" API reg. box bored for float 2 - Bit subs ft" IF box by ftft" API reg. box bored for float 30 - 6h" O.D. x 2)4" I.D. spiraled drill collar 31' long with ft" IF connections ft5 - Joints 5" heavy weight drill pipe with ftft" IF connections 2 - Bit ubs 6-5/8" API reg. box by 7->/8" API reg. box bored for float 2 - Bit subs ft" IF box by 6-5/8" API reg. box bored for float 2 - Kelly 5K" HEX by 3K" bore by 5ft feet long with 5" XH pin 1 - (Pair) Byron Jackson type DB rotary tongs 3ft" to 17" range 1 - (Set) VARCO 2-3/ft" x 132" 350 ton links 2 - Bry on Jackson type GG 350 ton 5" drill pipe elevators 2 - VARCO type SDXL 5" driL pipe slips 1 - VARCO type DCS-L 6-3/ft" - 8" drill collar slips 1 - VARCO type DCS-R 5ft" - 7 - collar slips 2 - VARCO type MP-R ftft" - 1G/2 saiety clamps

BLOWOUT PREVENTERS, RISER SYSTEM. DIVERTER SYSTEM. BLOWOUT PREVENTER. PREVENTER CONTROL SYSTEM AND CHOKE

The stack is 18-3/ft" - 10,000 psi W.P. Cameron type "U" II double .preventer*, 18-3/ft" 5,000 psl, W.P. Cameron type "D" annular blowout preventers. Starting at the wellhead and going up, the stack will have a National 18-3/ft" - 10,000 psi W.P. autolock straight connector; Cameron type "U" II 18-3/ft" - 10,000 psi, W.P. double with 5" pipe rams in top and bottom; Cameron type "U" II 18-3/ft" - 10,000 psi W.P. double with blind shear rams in top and 5" pipe rams in bottom; Cameron 18-3/ft" - 5000 psi W.P. type "D" annular blowout preventer; Cameron 18-3/ft" - 10,000 psi W.P. collect connector; Cameron 18-3/ft" - 5000 psi W.P. Type "D" annular blowout preventer; 18-3/ft" nominal Cameron flex joint with Cameron 21" "RD" box connector. There are 1ft fifteen gallon, 3,000 psi W.P. separator type accumulator bottles mounted on the stack. The stack mounted choke and kill valves are Cameron type "F" gate double 90 degree block tee, with 3-1/8" - 10,000 psi W.P. BX-15ft clamp hub inlet and outlet, with two type "DF" 30000 operators.

The riser is 20" O.D. x ft" wall X-65 pipe with Cameron connectors and integral kill and choke lines. 3000 feet total, as follows:

Sixty 50' joints with bouyancy modules. Two each 20' and 10* joints. The slip joint has a 60' stroke.

PENROD 78 INVENTORY, PAGE 5

» I

'Regan type KFDS Diverter with the following components: 1

Support housing permanetly mounted under the ft9fc rotary table, KFD diverter nominal 20" with ten inch bore insert packer, flow. Une spacer spool with two hydraulic actuated seals and a type DR-1 support bail J

Blowout preventer control is a Koomey Hydraulic Sub-Sea B.O.P. Control system with the following components: Master electric drillers control panel Model EX32G6R, Model EW21GM electric remote control panel, Model SSA-300-11S Koomey accumulator unit with 300 gallon mixed f'-ud reservoir, 100 gallon soluble oil reservoir, 100 gallon Welkic reservoir, three Model I 7A36 air powered pumps, two Model UET6GB electric driven triplex pump, Model UP3. *24EPR Hydraulic Control Manifold, 109 eleven gallon, 3000 psi, W.P. separator type accumulator pottles, two Model RHSP-50 retrevable hydraulic control pods, two hose reels with 35Cw of control hose and diverter control panel.

Th* choke manifold is 3-1 /16" - 10,000 W.P. having two H-2 adjustable chokes and two hydraulic operated Cameron adjustable chokes.

SPECIAL EQUIPMENT:

1. Mud-Gas separator 2. Drilling Recorder-Geolograph Model Drill Sentry six pen. 3. Dual mud lines complete with dual standpipes and 3" x 75" - 10,000 psi test rotary

hoses. 4. SWACO horizontal style degasser. 5. Halliburton twin HT-400 rement unit driven by two EMD D-79 DC electric motors. 6. V/ RCO Model 6600 Power sub. 7. Totco Pitometer system mud volume totalizer with recorder. 2. Totco pump stroke-trip flow counter system. 9. One MAXIM Model RO-100 water distillation unit, 10,000 gallons per day. 10. Two 400 amp welding machines and oxygen-acetylene equipment. 11. Mathey ••Surveyor" wireline unit with 25,000* of .092" line. 12. Three sets of 350 ton casing tools for running 13-3/8", 9-5/8" & 7" casing. 13. OMSCO 6-5/8", 15,000 psi test Kelly valve (upper). 14. Two OMSCO 10,000 psi test Kelly valves (lower). 15. Two Gray inside BOP. 16. Drilco E-Z torque hydraulic cathead. 17. Fork lift truck for sack mud storage room. IS. One pair Baash-Ross type A AX tongs for 20" and 30" casing. 19. Baash-Ross type H-200 side door elevators for 20" casing. 20. One Lamb Model 16000 hydraulic casing tong for 13-3/8", 9-5/8" and 7" casing. 21. One Totco operating unit 0-8° and 0-16°. 22. Overshots and Taper taps for contractor furnished drill string. 23. One OMSCO 10,000 psi test drill pipe safety valve. 2ft. Totco type 100 weight indicator with tong torque gauge, pump pressure gauge,

rotary RPM indicator and pump strokes indicators. 25. Houston Engineers partially balanced driiiing bumper jars two 8" and two 6K". 26. Baash-Ross type H-i 50 side door casing elevator for 30" casing. 27. 23 Beebe Bros, air tuggers in various sizes for use on rig floor, guidelines, BOP

storage area and main deck area.

PENROD 78 INVENTORY, »AGE 6

28. "i wo 490 CFM at 125 psi air compressors, one air dryer and one bulk compressor with air rec J

29. V.M.W. tyill String Racking Arm on drill floor - Mcdel RJT-33C. 30. VARCO type CB casing bushings for 20" OD and 30" OD casing. 31. VARCO tVpe CMS-XL casing slip for 30" OD casing. 32. Spinnerhawk Model 13,000 329 drill pipe spinner. 33. Diesel engine driven 550 KW emergency AC generator. « 34. Two Red Fox Model Fox-Pac FP-l500 sewage treatment plants. 35. Two Clayton steam generators Model EO-200-1 •

COMMUNICATIONS EQUIPMENT:

One HARRIS Model RF 230M(AC) single side band 125 wan radio with 1,000 watt linear amplifier. Two Sailor Model RT 1144AC VHF/FM Marine transceiver. Radio room clock with silence periods marked. VHF/AM transmitter/receiver for helipcopter operations - NARCO Model 120/TR-1000B. Helicopter homing beacon - Southern Avionics model SS-1000A. ACR Model RLB-14 (D.P.I.R.B.) Emergency Position Industry Radio Beacon. Two Lifeboat Radio's - ITT Mackay Model 403A Six Standard Communications Model 83DS-5QB Marine VHF-FM Portable (Hand Held) Transceivers.

MOORING SYSTEM:

Skagit 8 point wire/chain combination mooring system consisting of 4 Skagit Model ETW-350/48 DBL winch/windlasses, each one equipped with 2 Eaton 336 water cooled Disc brakes and 2 air cooled 128 inch band brakes. Brake holding capacity is 1100 kips per anchor. Winch pulling capacity is 500 kips.

Each wire is 3ft inch x 6300 ft. Each chain is 3 inch x 3000 ft. Breaking strength of wire rope is 983 kips, and of the chain 1045 kips.

9 (Includes 1 spare) Bruce fabricated (not cast) 15 tonne high holding anchors with Bruce designed chasers. Anchors have been tested to hold at least 15 and up to 40+ times their weight on almost ai type of bottom. The chasers have been designed to be used with wire/chain combination systems and are used instead of the conventional buoy/pennant wire system.

THRUSTERS:

Four (4) Schottel type S 1502 LS 360 degree full azimuthing thrusters.

Each thruster is driven by a 2000 horsepower DC motor at a maximum of 720 RPM through a reduction gear.

PENROD 78 INVENTORY, PAGE 7

Propellw diameter is 8 feet 6 inch and is enclosed in a kort nozzle. Propeller RPM range is ftom 0 to 233 and each thruster dev elopes a thrust of 0-56+ kips. Rig has sufficient DC har*et?t»wer installed to operace thrusters and driliing functions simultaneously.

CRANES: . j

Two National Supply OS435HD Hydraulic/Diesel with 150 foot booms. Rated at 88 kios at 60 foot radius.

PENROD 78 INVENTORY, PAGE 8

SOUTHERN EXPLORATION DIVISION OFFSHORE LOUISIANA

INDEX MAP SHOWING PROPOSED WILDCAT LOCATION—

T E X A S

HOUSTON

CAST BREAKS ARE*

AL AU/NOS CANYON AREA

CA»OCN BANKS ARC*

KEATHLEY CANVON AREA

r ^ U , r L , i EVINC ..-HK

VIOSCA KNOLL ARE*

UlSS1SS!PP> CANYON AREA

BLOCK 204

CREEN CANYON AREA A1WATCR VALlCT ARtA

HALKER R/OGE AREA NG 16-*

100 MILES

T

Y • IOJ390D8QDO

f I

& SURF. LOC.

WELL '&. SURF. LOC. GREEN CANYON BLOCK 204 OCS-G-7036

GREEN CANYON BLOCK OCS-G-7036

204

TEJJCO MC LS (5783 JCRES)

WELL 'A' SURF. & PBHL GREEN CANYON BLOCK 204 OCS-G-7056

'A' 600'

I I 7900' —

V SURF. LOC.

WEU 'C SURF. LOC. GREEN CANYON BLOCK 204 OCS-G-7036

174240OO

NOTEi

HI COORDINATES ARE BASED ON UNNF.RSH. TRANSVERSE UERCAIOR GRID STSTEU. ZONE li.

L A N O F E X P L O R A T I O N PUBUC INFORMATION PLAT

T E X A C O I N C . N E W O R L I A N 8 , l - A .

GflEEW C/WTO/V 5LCT/C 2fK

'JS */££5 SOUTHEAST FROM UOROAM CITY.LOWSIANA

.DRILLING MOD COMPONENTS

Common Chemical or Chemical Trade Name

Aluminum Stearate j "AKTAFLQ-Sr B a r i t e Calcium Carbonate Calcium Chloride Calcium Oxide Calcium Sulfate Carboxymethyl Cel lu lose Caus t i c Potash Caus t i c Soda Chrome l ignite Chrome Lignosulfonate D r i l l i n g Detergent " E - P a l "

Ferrochrome Lignosulfonate Gel

Gypsum L i g n i t e Lignosul fonate "Mud Sweep" "MOR-REX" "Shale-Trol" Sapp Soda Ash

Sodium Bicarbonate Sodium Carboxymethyl Cellulose Sodium Chloride Sodium Chromate Starch

"TX-9010"

"TORQ-Trim"

Description of Material

Aluminum Stearate

Nonionic Surfactant

Barium Sulfate (BaS04)

Aragonite (CaCO^)

Hydrophilite {CaCL2>

Lime (Quick)

Anhydrite (CaS04)

Carboxymethyl Cellulose

Potassium Hydrate

Sodium Hydroxide (NaOH)

Chrome L i g n i t e

Chrome Lignosulfonate

Soap

Non-toxic, biodegradable defoamer

Derived frcm wood pulp

Sodium montmorillonite, bentonite,

a t t a p u l g i t e

CaS0..2Hn0 4 2 L i g n i t e

Lignosulfonate

Cement Pre-flush

Hydrolyzed Cereal Solid

Organo-aluminum complex

Sodium Acid Pyrophosphate

Sodium Carbonate

NaHC03

Sodium Carboxymethyl Cellulose

NaCL

NaCr04.10H2O

Corn Starch

Biodegradable d r i l l i n g lubricant

Biodegradable d r i l l i n g lubricant

DFC : t v POE/3

r

'• i Common Chemical or Chemical Trade Name

"Black Magic"

"Black Magic Supermix*

Diesel

"J e l f l a k e "

MICA

"Pipe-Lax"

"Wall-Nut"

Wood Fibers

MOD ADDITIVES

Description of Material

O i l base mud concentrate

Sacked concentrated o i l base mud

Osed to mix certain' loss-c i r c u l a t i o n p i l l s

P l a s t i c f o i l , shredded cellophane

Loss - c i r c u l a t i o n material

Surfactant mixed with diesel

Ground wallnut shells

Loss-circulation material

DFC tdw POE/3 10/17/87

PROJECTED AIR EMISSIONS REPORT

GREEN CANYON BLOCK 204

. FEDERAL LEASE OCS-G 7036

LOCATIONS "A", "B" and "C"* '

EMISSIONS IN POUNDS PER DAY

TEMPORARY SOURCES1 N O x CO VOC TSP so2

2 D r i l l i n g Equipment

264 57 21 19 18

Other So- ccea 19 11 11 _2 __2

TOTAL 283 72 32 21 20

EMISSIONS IN TONS PER YEAR

**• TEMPORARY SOURCES1 N O x CO VOC TSP so2

2 D r i l l i n g Equipment

38.7 8.4 3.0 2.7 2.6

Other Sources 3 2.8 2.2 1^6 0.3 0.3

TOTAL 41.5 10.6 4.6 3.0 2.9

Emission Exemptions for NOx, CO, voc, iSP and SO? r»r* .Iculated

using the f o l l o w i n g formulas with a distance ti e of S7

mi les.

CO Exemption (E) i n Tons Per tear .

3400 x (distance from shore) 2 / 3 * 340C (87) 2 / 3 = 66,766

NO , VOC, TSP, SQ2 Exemption (E) i n Tons Par Year.

E • 33.3 x distance from shore * 3...3 (87) = 2897

(1) A i r emissions from temporary a c t i v i t i e s that occur in one location for less than three years are exempt from further a i r q u a l i t y review. Temporary a c t i v i t i e s for t h i s proposal w i l l l a s t approximately 293 days, therefore, being w i t h i n the l i m i t s of the d e f i n i t i o n of temporary a c t i v i t i e s .

(2) Based on 60 hph r / f t . from study, "Atmospheric Emissions From Offshore O i l and Gas Development and Production," EPA 450/3-77-026, June, 1977.

(3) Based on emission factors frcm "Compilation of A i r Pollutant Emission Factors," Third Edition SPA Report AP-42, August,

19/77 (Tables 3.2.1-3, 3.2.3-4, and 9.1-2). Included are helicopter landing and take o f f , two trips/week; supply

'and/or crew boats, at dockside, 12 hrs./day, two days/v*ek; fuel storage and t r a n s f e r ; loading and unloading operations

'and i n c i n e r a t i o n of waste paper (averaqe c: 800 lb/mc• for duration of p r o j e c t .

DFC tdw POE/3 10/17/87