28 1983manual, 1983) including grand isle, venice, gretna, and houma, louisiana. each of these...
TRANSCRIPT
1
jln Vvly Reier To: RP-2-1
iMarathon 011 fonjpany Attention: Nr. F. F. Schneider 'ost Office Box 532* r
Lafayette. Louis 1<a 05
Gentlemen:
Reference 1s made to your Initial Plan of Exploration and environmental Report received November !9, .983, for Lrise OCS-G 5639, Block 2RC, South Timbalier Area. This plan Includes the dri l l ing of 10 wells*
In accordance with 30 CFR 250.34, revised December 13, 1979, and our letter dated January 29, 1979, this plan nas been determined to be complete as of November Z&» 19A3, and 1s now being considered Tor approval.
Your plan control number 1s ft-1427 and should be referenced 1n your comnr'nlcation and correspondence concerning this plan.
Sincerely yours.
NOV 28 1983
i
(Orig. Sgd.) D.W. Solanas ^
0. V Solanas Regional Supervisor Rules and Production
bcc: Lease OCS-G 5639 (OPS-4) (FILE ROOM) (lQPS-4 w/Publfc Info. Copy of the plan and ER (PUBLIC RECORDS kOOM) 00-6
HHekmatdoost:gtj: 11/21/83 Disk 3b
OffU* of ^ Management Support
NOV 301903
Records Management
, o. *****
EXPLORATORY DRILLING PLAN SOUTH TIMBALIER BLOCK 280
OCS-G-5639
Intersea Research Corporation conducted a high resolution geophysical survey on South Timoalier Area Block 280 for Marathon Oil Company. The survey was performed with a magnetometer, a sub-bottom p ro f i l e r , a side scan sonar, a minisparker, and an 80-inch water gun.
Interpretation of the seismic information allowed the generation of the current attached structure maps and a cross sectional schematic of the a.*ea showing the expected depths of marker formations. Additional geophysical dala w i l l be obtained as warranted as new information is gained during d r i l l i n g ac t iv i ty .
Based on che present interpretation of seismic information, locations of the proposed wells are l i s ted in the attached proprietary information copy.
The exploratory work is to be done with one or more semi-submersible type mobile d r i l l i ng rigs. As presently scheduled, two wells w i l l be directionally d r i l l ed and eight (8) w i l l be straight holes. As each well is d r i l l ed and new information is obtained, the location and number of subsequent wells on the block may change. This contingency is required in order to optimize the evaluation of the block with a minimum of wells in the most strategic locations.
Each exploratory well is projected to require a minimum of 60 days to d r i l l and evalur Present scheduling indicates that the f i r s t well w i l l spudded approximately December, 1983. Because a ten (10) well program w i l l require at least 66̂ iays of continuous d r i l l i n g ac t iv i ty , the complete program as affected by present and future r i g scheduling, is projected to extend through October, 1985.
The service base fo r this exploration program w i l l be Venice, Louisiana. Numerous service f a c i l i t i e s , including storage areas, pipe yards, mud companies, helipads, docks, and other related services, are located here and are deemed adequate to support this exploration program.
The Oil Spill Contingency Plan for Marathon Oil Company was approved January 5, 1983. Marathon is a member of Clean Gulf Associates. In the event of an o i l s p i l l , Clean Gulf's service equipment from Venice, Louisiana, w i l l be ut i l ized for cleanup operations. Oil s p i l l response time is estimated to be ten (10) hours for the Workboat t̂aunted Fast Response Systems and twenty (20) hours for the Hoss Barge Open Sea Skimmer System.
Gaseous Air Emission projections are located in the attached environmental report.
. Office of Management Support
NOV oO'J83
Records Management
Marcthon Oil Company OCS-6 - 3639
BLK. 279 BLK. 280 - A
BLK. 291
BLK. 28
MASTER SHEET IOOO
SCALE
PROPOSED MINERAL DEVELOPMENT
SO. TIMBALIER AREA - SO. ADD. GULF OF M EXICO
APPLICATION BY NOVEMBER 15,1983
MARATHON OIL COMPANY LAFAYETTE, LOUISIANA
I
Mud U M ^7 IWWPWP WWmWBf MMS* TVZkWm
TYPICAL SEMI-SUBMERSIBLE RIG
PROPOSED MINERAL DEVELOPMENT
SOUTH TIMBALIER AREA - SO. ADD. G U L F OF M E X I C O
APPLICATION BY MARATHON OIL COMPANY NOVEMBER 15. 1983 LAFAYETTE. LOUISIANA
. I •
WATER BASE MUD COMPONENTS
GULF OF MEXICO
- \ Composition
Gelling Agent
Weight Material
Thinner
Viscosifier
Lost Circulation Material
Corrosion Inhibitor
pH Control
Lubricants
Wyoming Bentonite Clay Attapulgite
Barium Sulfate Barite
Sodium Acid Pyrophosphate Leanardite Phosphate Lignite Resign Soaps Sodium i'etraphosphate Ferrochrome Lignosulfonate Oirome Lignosulfonate Polymeric Lignosulfonate Aluminum Chrome Lignosulfonate Calcium Lignosulfonate Hemlock Bark Extract Gilsonite Quebracho
Starch Carboxymethyl Cellulose Sodium Hexametaphosphate Pelletized Asbestos
Cellophane Mica Flakes Ground Nut Hulls Expanded Perlite Diatomaceous Earth Shredded Leather Rice Hulls
Filming Amine
Potassium Hydrate Caustic Soda
Detergent Castor Oil Alcohol
Various Chemicals CaCI 2
CaCot
OIL BASE MUD COMPONENTS
GULP OF MEXICO
egory • 1
K. |
Gellfng Agent
Weighting Agent
Thinner or Emulsifer
Water Loss Control Agent
pH Control
Lost Circulation Material
Composition
Organophylic Clay
Barite or Barium Sulfate
Organic Fatty Acid Amines
Modified Asphat.tine
Lime
Cellophane Mica Flakes Ground Nut Hulls Expanded Perlite Diatomaceous Earth Shredded Leather Rice Hulls
Various Chemicals Oil Diesel CaCI 2
OCEAN VIKING rx • I Ml — I MUC » » l v f |
4>4
J j~
TYPICAL PRESSURE CONTROL SYSTEM ,SEMh SUBMERSIBLE RIG
o — 1
V
ENVIRONMENTAL REPORT'
PLAN OF EXPLORATION
SOUTH TIMBALIER AREA BLOCK 280
OCS-G-5639
MARATHON OIL COMPANY
November 18, 1983
COMPANY CONTACT PERSON: MR. R. J. CORDES MARATHON OIL COMPANY P. 0. BOX 53266 OCS LAFAYETTE, LA 70505 PHONE (318) 233-8420
I
• I •
r
1 . INTRODUCTION ' *
—
Marathon 1 d i l Company plans to conduct exploratory d r i l l i n g
operations a t South Timbalier Block 280. This area i s located
approximately 93 miles southwest of Venice, Louisiana.
The o b j e c t i v e of the proposed a c t i v i t y i s o u t l i n e d i n the Plan of
Exploration. B r i e f l y , the o b j e c t i v e i s to d r i l l 8 s t r a i g h t
exploratory wells and 2 d i r e c t i o n a l exploratory w e l l s . A jack-up
exploratory d r i l l i n g r i g w i l l move on l o c a t i o n i n December, 1983.
The d u r a t i o n of the d r i l l i n g a c t i v i t y i s estimated to be 90 days
per d i r e c t i o n a l well and 60 days per s t r a i g h t hole for a t o t a l
p r r j e c t d u r a t i o n of 660 days. The e x p l o r a t i o n a c t i v i t i e s w i l l be
completed by October, 1985.
NOTE: The information included i n t h i s Plan follows the
Guidelines f o r Preparation of Environmental Reports f o r Coastal
Management Consistency Determination by the States of Alabama,
Louisiana and M i s s i s s i p p i . Sections are designated in t h i s
report to conform with those of the Guideline.
2. DESCRIPTION OF THE PROPOSED ACTION
a. Travel routes for supplies and personnel w i l l be from Venice,
Louisiana to the p r o j e c t area u t i l i z i n g workboats and
crewboats.
- 1 -
One round t r i p per boat w i l l usually occur every one to
two days. .Helicopters w i l l provide a i r # s e r v i c e averaging one
f l i g h t per day.
IM j
The Marathon shorebase at Venice, Louisiana i s already manned
and w i l l not require a d d i t i o n a l personnel. S i m i l a r l y , no
sig . i f i c a n t adjustment i n a c t i v i t y l e v e l s or f a c i l i t i e s i s
expected i n a n c i l l a r y companies such as warehouses, mud
companies, pipe storage yards, h e l i p o r t s , and other service
companies.
A l i s t of employees to be used in the proposed operations
offshore and onshore i s l i s t e d below. The l i s t i s t y p i c a l ,
though the exact number of employees may vary day by day.
Offshore
Position Number of Employees
D r i l l e r 2 Derrickman 2 Roughneck 6 Toolpusher 2 Machanic 1 Crane Operator 2 Roustabout 8 Welder 1 E l e c t r i c i a n 1 A u x i l i a r y Toolpusher 1 Cook 2 Gaily hand 3 Company Man 1 Di r e c t i o n a l Serviceman 1
To t a l , 2 crews 66 persons 33
-2-
J
I •
Onshore
Posi t i o n Number of employees
Warehouse and Wharf Helicopter Crewboat Stfpply (work) boat
6 3 4 7
T o t a l , 1, 2 crews • 40 persons 20
The d r i l l i n g r i g u t i l i z e d i n the p r o j e c t w i l l be occupied
approximately 66 persons, ""nese workers are c u r r e n t l y
assigned to the d r i l l i n g r i g . No a d d i t i o n a l personnel w i l l
be required as a r e s u l t of the d r i l l i n g a c i t v i t i e s .
c. No new support f a c i l i t i e s w i l l be needed for the proposed
act i v i t y .
d. No new techniques or unusual technology w i l l be used.
e. Maps are not requi r e d . Travel w i l l be from Venice to South
Timbalier Area Block 280.
f. P i p e l i n e routes, e t c . are not applicable at t b i s time.
ADDITIONAL INFORMATION
P o t e n t i a l waste products from the p r o j e c t w i l l include domestic
s o l i d wastes, s a n i t a r y wastes, and d r i l l i n g f l u i d s . D r i l l i n g
f l u i d s u t i l i z e d i n the p r o j e c t may be both o i l based and water
based o r i l l i n g muds. Onshore disposal of d r i l l i n g muds w i l l
depend on the composition of the muds. P o t e n t i a l components of
the J r i l l i n g f l u i d system w i l l include those components commonly
u t i l i z e d in t h i s type of a c t i v i t y . These components are l i s t e d
in the Plan of Ex p l o r a t i o n .
-3-
Thet Marathon O i l Company Gulf Coast Offshore D i s t r i c t O i l S p i l l
Contingency Plan, submitted to the M.M.S. on December 31, 1982
and; approved January 5, 1983 , discusses contingency plans f o r
preventing, r e p o r t i n g , and cleaning up s p i l l s of o i l or waste
materials. The Contingency Plan describes p o l l u t i o n prevention
procedures and r e s p o n s i b i l i t i e s for Marathon O i l Company
employees and contract personnel. Sp e c i f i c duties for Marathon
employees involved in the implementation of contingency plans are
outlined i n the O i l S p i l l Contingency Plan. The duties of
contract o i l s p i l l cleanup companies are also addressed.
Marathon O i l Company i s a member of Clean Gulf Associates (CGA).
In the fevent of a major s p i l l , equipment owned by CGA would be
u t i l i z e d i n the s p i l l c o n t r o l and cleanup e f f o r t . CGA maintains
s p i l l c o n t r o l and cleanup equipment at various coastal
communities on the Gulf Coast (Clean Gulf Associates, Operation
Manual, 1983) including Grand I s l e , Venice, Gretna, and Houma,
Louisiana. Each of these locations i s r e l a t i v e l y proximate to
the p r o j e c t s i t e .
I t is Marathon O i l Company's p o l i c y that a l l employees and
contractors w i l l comply w i t h the p o l l u t i o n prevention
requirements of OCS Orders 5 and 7.
-4-
3. DESCRIPTION OF THE AFFECTED ENVIRONMENT AND IMPACTS
a. (j.) South Timbalier Block 280 i s not known to be in an
evironmentally s e n s i t i v e area. While the d r i l l i n g r i g i s
locate d over the proposed w e l l s i t e s , 2.5 to 5.0 acres of
s e a f l o o r K ' w i l l be removed from commerical bottom f i s h i n g .
South Timbalier Block 280 i s located w i t h i n the 200 mile
Fishery Conservation Zone and i s shown to be i n NMFS
f i s h i n g g r i d zone number 14 on Visual 4-1, MMS Offshore
F i s h e r i e s Map. South Timbalier Block 280 is not located
near any major oyster areas but i s located inside the
boundary of the major f i n f i s h area.
(2) South Timbalier Block 280 l i e s outside of any major
shipping fairway.
(3) The use of pleasure c r a f t i n the pr o j e c t area may be
d i r e c t l y a ffected by the presence of the d r i l l i n g r i g . A
discus s i o n of these impacts can be found in the Final
Regional Environmental Impact Statement for the Gulf of
Mexico published i n January 1983.
Marathon O i l company was a p a r t i c i p a n t of the Minerals
Management Service sponsored study of the re c r e a t i o n a l use
associated w i t h petroleum s t r u c t u r e s . The ob j e c t i v e of
the study was to document the number of pleasure boats
associated w i t h OCS r e c r e a t i o n a l f i s h i n g . Although the
study has been concluded, Marathon w i l l continue to
support pleasure and sport f i s h i n g on the OCS.
-5-
(4) South Timbalier Block 280 is located inside the c u l t u r a l
resource s e n s i t i v i t y demarcation. Intersea Research
of'the block. Information concerning the survey is
included in the Plan of Exploration. The proposed well
si t e s appear to be located in an area with no unmanageable
shallow d r i l l i n g hazards or archeological sites. The
block seafloor shows no evidence of drowned archeolog .cai
or c u l t u r a l resources.
(5) The project area is not proximate to marine sanctuaries or
breeding grounds. Also, w i l d l i f e refuges, breeding and
spawning grounds, and marine and estuarine sanctuaries
w i l l not be affected by a c t i v i t i e s associated with t h i s
p r o j e c t .
(6) There is no indication of pipelines or other manmade
structures near the proposed woll s i t e s . No known cables
ex i s t on South Timbalier Elock 280.
(7) There are no other known minerals uses at South Timbalier
Block 280.
(8) The geology of South Timbalier Block 280 is variable, but
consists primarily of Pleistocene Shelf Deposits.
Specifics of the block geology ar* included in the Plan of
Exploration.
a high resolution geophysical survey
-6-
I I •
The most s i g n i f i c a n t source of s o l i d wastes for the
proposed a c t i v i t y i s c u t t i n g s from the bore hole and
dumped at the s i t e and consist of rock p a r t i c l e s ranging
from grain to pebble si z e . The amount of c u t t i n g s from a
10,000 foot w e l l i s estimated to be 1,000 tons.
Impacts on the environment from these c u t t i n g s would
include a burying of benthic organisms found at the r i g
s i t e . Juration of t h i s impact would be sho~t as the
c u t t i n g s w i l l s e t t l e to the bottom. The o v e r a l l impact on
benthic organisms w i l l be of a l o c a l i z e d and temporary
nature. A l i s t of d r i l l i n g mud a d d i t i v e s u t i l i z e d i n the
p r o j e c t is included i n the Plan of Exploration.
The c u t t i n g s are processed over a shale shaker and washed
to remove d r i l l i n g mud and o i l f r o them. Some of the mud
may become entrained w i t h the d r i l l i n g f l u i d s and cause a
t u r b i d i t y plume. The long term e f f e c t s of the plume are
not known although l o c a l i z e d impacts on the phytoplankton
population can be expected. No o i l based d r i l l i n g f l u i d s
w i l l be discharged overboard.
Winter and summer currents in South Timbalier Block 280
run generally to the northwest at 41 cm/sec wi t h
occasional variances.
d r i l l i n g f l u i d s . The c u t t i n g s are normally
-7-
t / • 1 ' I.
• I •
South Timbalier Block 280 does not l i e in a U.S.E.P.A.
approved Ocean Dumping Site. i
-T- ' ' - \
(9) Four species of marine t u r t l e occur in the Gulf of Mexico.
These)- are the loggerhead, green sea t u r t l e , Atlantic
Ridley, and hawksbill. These t u r t l e species are on the
endangered species l i s t . Turtles in the v i c i n i t y of the
project area would be vulnerable to major o i l s p i l l s and
possible co l l i s i o n s with boats. The potential for an o i l
s p i l l i s remote. No t u r t l e nesting grounds are located in
the v i c i n i t y of the project area, transportation routes,
or shore support base. There is l i t t l e reason to suspect
disruption of t u r t l e migrations.
Of the marine mammals occuring in the Gulf of Mexico, the
sperm whale, black r i g h t whale, sei whale, f i n whale, and
blue whale are on the endangered species l i s t . Lowery
(1974) presents a discussion of the state of knowledge of
the marine mammals o f f the coast of Louisiana and Texas.
From the information presented, i t appears that any
endangered whales discovered in the project area would be
strays, i f they occurred at a l l . Resident populations of
these whales are either in colder waters, deep waters, or
more t r o p i c a l waters. Porpoises of the genus Stannella,
Tursiops, and Delphinus are expected to commonly occur in
the project area.
-8-
• I •
The whooping crane and brown pelican were l i s t e d as
endangered in 1967 and 1970, respectively. The
transportation routes from the project area to the
shorebase (Venice, Louisiana) are not in the v i c i n i t y of
the c r i t i c a l habitat for these species.
-9-
SOUTH TIMBALIER BLOCK 280 GASEOUS AIR EMISSION PROJECTION
Airborne pollutants in this project w i l l be generated by engines on the drilling r i g , supply and transport boats, and helicopters. Attached are summaries of the projected emissions from each of these sources for'one year as well as for the duration of the project. The sum of these projected emissions were used to calculate the total projected emissions and the exemption status as listed below.
PARAMETER EMISSION EXEMPTION AMOUNT (Tons/Year)
TOTAL PROJECTED EMISSION, 1 Yr. Duration (Tons) STATUS
SO- 3,097 .4.4 Exempt
TSP
NOx
00
VOC
3,097
3,097
69,791
3,097
26.4
369.5
81.7
29.6
Exempt
Exempt
Exempt
Exempt
Bnission exemption amounts are calculated based on the following formulas from CFR 30, Part 250.57-1.
E - 33.3D (For S02, TSP, NOx, and VOC)
E « 3400D 2 / 3 (For CO)
Where E is the emission exemption amount in tons per year and D is the distance of the f a c i l i t y from the mean high water mark in statute miles.
-10-
SOUTH TIMBALIER BLOCK 280 . , GASEOUS AIR EMISSION PROJECTION
HELICOPTER SOURCES
Helicopter^ used i n this operation are expected to make one t r i p per day dur i the 660 day project duration. While in the immediate v i c in i ty , emissions w i l l
occur during takeoff and*'landing. Projected Emissions are as follows:
EMISSION FACTOR FROJECTED ONE PROJECTED EMISSIONS, PARAMETER (lbs/100 per cycle) YEAR EMISSIONS (Tons) 660 Day Project Duration (Tons)
S Q 2 0.18 0.03 0.06
TSP 0.25 .05 0.08
NCV °*57 °*10 ° ' 1 9
CO 5.7 1.04 1.88
VOC 0.52 0.09 0.17
•Emission factors are based on data from "Compilation of Air Pollutant Emission Factors," 3rd Edition, AP-42, U.S. EPA, 1977.
-11-
GA5t^^A7RD^S^foNIPRaJECriON WORKBOAT SOURCES
Workboats Jay consume up to 45,000 gallons of fuel per month. Based on this quantity of fuel consumed, the projected emissions from this source w i l l be as follows:
K. j
EMISSION FACTOR* PROJECTED ONE PROJECTED EMISSIONS PARAMETER (lns/1000 gal fuel) YEAR BIT SSI ONS (Tons) 660 Day, Project LXiration
S02 31.2 8.4 15.4
TSP 33.5 9.0 16.6
NOx 469.0 126.6 232.2
CO 102.0 27.5 50.5
VOC 37.5 10.1 18.6
•Emission factors are based on data from "Compilation of Air Pollutant Bnission Factors," 3rd Edition, .AP-42, U.S. EPA, 1977.
-12-
SOUTH TIMBALIER BLOCK 280 GASEOUS AIR EMISSION PROJECTION
DRILLING RIG SOURCE GLOMAR MAIN PASS TI
Source Fuel Projected Emission
Running Elevation, Consumption, Emission Factor r Projected Emission 660 Day Proiect Durat ion .
Running (Ft. Above (Gallons (Pounds/1000 Gallons) (pounds/day) (Tons) Time, Sea Per
(Tons)
Engine Horsepower (Percent) Level) Day) SO? TSP NOy
33.5 469
CO VOC SO?
16.8
TSP NOy
253.3
CO VOC SQ7 TSP NOy CO VOC
6.0 83.6 18.2 6.7 Cat. D-399 1100 75 80 720 31.2
TSP NOy
33.5 469 102 37.5
SO?
16.8 18.1
NOy
253.3 55.1 20.3 5.5
TSP NOy CO VOC
6.0 83.6 18.2 6.7 Cat. D-399 1100 75 80 720 31.2 33.5 469 102 37.5 16.8 18.1 253.3 55.1 20.3 5.5 6.0 83.6 18.2 6.7 Cat. D-399 1100 75 80 720 31.2 33.5 469 102 37.5 16.8 18.1 253.3 55.1 20.3 5.5 6.0 83.6 18.2 6.7 Cat. D-399 1100 75 80 720 31.2 33.5 469 102 37.5 16.8 18. 1 253.3 55.1 20.3 5.5 6.0 83.6 18.2 6.7 Cat. D-399 1100 35 80 720 31.2 33.5 469 102 37.5 7.9 8.4 118.2 25.7 9.5 2.6 2.8 39.0 8.5 3.1 Cat. D-379(Emery) 125 1 80 480 31.2 33.5 469 102 37.5 0.1 0.2 2.3 0.5 0.2 0.03 0.07 0.80 0.2 0.07 Cat. 3306(Crane) 200 50 95 288 31.2 33.5 469 102 37.5 4.5 4.8 67.5 14.7 5.4 1.5 1.6 22.3 4.9 1.8 Cat. 3306(Crane) 200 « j 95 288 31.2 33.5 469 102 37.5 0.5 0.5 6.8 1.5 0.5 0.2 0.2 2.2 0.5 0.2 Cat. 3406(Crane) 250 60 95 360 31.2 33.5 469 102 37.5 6.7 7.2 101.3 22.0 8.1 2.2 2.4 33.4 7.3 2.7 L i s te r (Ai r Gompr) 20 1 80 48 31.2 33.5 469 102 37.5 0.01 0.02 0.2 0.05 0.02 0.003 0.007 0.07 0.02 0.007 Detroit 8V-92 350 5 75 408 31.2 33.5 469 102 37.5 0.6 0.7 9.6 2.1 0.8 0.2 0.2 3.2 0.7 0.3 (Halliburton)
0.2 3.2 0.7 0.3
GM671 (Schlumberger) 220 5 75 240 31.2 33.5 469 102 37.5 0.4 0.4 5.6 1.2 0.5 0.1 0.1 1.8 0.4 0.2
660 DAY PROJECTION TOTALS 28.8 31.4 437.2 95.3 35.2
•Bnission factors are based on data from "Compilation of A i r Pollutant Emission Factors", 3rd Edi t ion, AP-42, U. S. EPA, 1977.
'b. No socio-economic data beyond that already provided
i s required.
4J JUNAVOIDABLE 'AD'E3SE IMPACTS
An unavoidable and i r r e v e r s i b l e impact to the geology w i l l
occur due to the removal of rock c u t t i n g s from the
subsurface s t r a t a . This impact is considered n e g l i g i b l e .
The water q u a l i t y 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 w i l l be temporarily degraded by the t u r b i d i t y r e s u l t i n g
from the d r i l l i n g f l u i d s and c u t t i n g s . Impacts on the b i o t a
of the area w i l l be of mixed q u a l i t y and dur a t i o n . The
negative impacts w i l l include the burying of benthic
organisms by the c u t t i n g s and the minor decrease i n
phytoplankton p r o d u c t i v i t y due to the d r i l l i n g mud plume.
Organism recovery rates would be dependent upon seasonal
reproduction cycles and r e c o l o n i z a t i o n by indigenous and
other species. Estimates for r e c o l o n i z a t i o n range from
months to several years.
These impacts are j u s t i f i e d due to the temporary nature of
the e f f e c t s of c u t t i n g s disposal on l o c a l water c l a r i t y and
benthic organims.
-14-
I I.
5. REFERENCES
The fallowing information sources were used in the
preparation of t h i s document:
Clean Gulf Associates, Operations Manual, 1983
Lowery, G. H., Jrv., The Mammals of Louisiana and I t s Adjacent Waters, Louisiana State Universi t y , 1974
Marathon O i l Company, Gulf Coast Offshore D i s t r i c t O i l S p i l l Contingency Plan, Lafayette, Louisiana, 1982
U. S. Department of the I n t e r i o r , Minerals Management Service, Final Reg ional Environmental Impact Statement, Gulf of Mexico
U. S. Environmental Protection Agency, Comp:lation of A i r P o l l u t a n t Emission Factors, 3r_ E d i t i o n , AP-42, 1977
Zingula, R. P., "Effects of D r i l l i n g Operations on the Marine Environment," Environmental Aspects of Chemical Use i n Well D r i l l i n g Operations, EPA 56011-75-004,1975
The proposed a c t i v i t y on OCS-G-5639; South Timbalier Block 280,
w i l l be c a r r i e d out and completed with the guarantee of the
fol l o w i n g items:
1. The best a v a i l a b l e and safest techologies w i l l be
u t i l i z e d th; >ughout the p r o j e c t . This includes meeting
a l l applicable requirements for equipment types, general
p r o j e c t l a y o u t , safety systems, and equipment and
monitoring systems.
There w i l l be no new or unusual technologies u t i l i z e d
throughout the p r o j e c t .
-15-
I
No new employment for re l a t e d onshore f a c i l i t i e s w i l l be
required as a r e s u l t cf t h i s projected a c t i v i t y .
2. A l l operations w i l l be covered by a M.S.S.-approved o i l
s p i l l contingency plan. Marathon's Gulf Coast Offshore
D i s t r i c t Plan dated December 31, 1582, for the
preventing, r e p o r t i n g , and cleaning up s p i l l s of o i l or
waste m a t e r i a l s , was approved January 5, 1983. (See
Append ix I ) .
3. A l l applicable Federal, Suate, and loc a l requirements
regarding a i r emission and water q u a l i t y and discharge
f o r the proposed a c t i v i t i e s , as well as any other permit
con d i t i o n s , w i l l be complied w i t h .
-16-
APPENDIX I
Notice of U. S. Geological Survey (Minerals Management Service)
Approval of the Marathon Gulf Coast Offshore D i s t r i c t Oil S p i l l
Contingency Plan.
-17-
COASTAL ZONE MANAGEMENT
CONSISTENCY CERTIFICATION
PLAN OF EXPLORATION
SOUTH TIMBALIER BLOCK 280
OCS-G-5639
The proposed a c t i v i t i e s described i n d e t a i l i n t h i s plan comply
w i t h the State of Louisiana's approved Coastal Zone Management
Program and w i l l be conducted i n a manner consistent w i t h such a
program. A request for p u b l i c a t i o n of P"L±ic Notice of a Plan of
Exploration has been made w i t h the State Time?, the o f f i c i a l
Louisiana s t a t e j o u r n a l . The notice w i l l be published i n the
leg a l Ad Section of the States Times on November 25, 1983.
MARATHON OIL COMPANY
; -I, i. Qti Westward D i s t r i c t Operations Manager Eastern Area
-19-