In Reply Refer To: HS 5231 March 21. 1991

Santa Pe Internat ional Corporation Attention: Mr. J . E . Jordan 13455 Noel Road. Suite 1100 Delia*. Texas 75240-6620

Gentlenen: NOTED - KRAMER

Reference Is nade to the following plan received March 7, 1991:

Type Plen • Initial Development Operations Coordination Docuaent Lasses • OCS-G 604? and 7202 Blocka • 633 and 634 Area - Matag~.aa Island Activities Proposed - a pletfora. a caisson, and four wells

In accordance with 30 CPR 250.34, this plen is hereby deeacd subaitted and Is now being considered for approval.

Your control nuaber is N-4020 and should be referenced ln your coBueunlcatlon and correspondence concerning this plen.

Sincerely ,

for (Orig. Sgd.) William H. Martin

D. J . Bourgeois Regional Supervisor F i e l d Operetions

bcc: Lease OCS-C 6042 POD F i l e (MS 5032) Leese OCS-C 7202 POD F i l e (MS 5032)

V.S 5034 w/publlc Info, copy of the plen end eccoap. info.

MTolbert:cic:03/11/91:DOCDCOM

577/7/17 fc intemstiona' corporation

March 5, 1991

U. S. Department of t h t In ter ior Minerals Management Service 1201 Elmwood Park Boulevard New Orleans, Louisiana 70123-2394

A t ten t ion : Nr. D. J . Bourgeois Regional Supervisor Office of F ie ld Operations

Gentleaen:

In coapliance with the provisions of 30 CFR 250.34, Santa Fe International Corporation hereby submits for your review and approval nine (9) copies of a Jo in t Developaent Operations Coordination Docuaent for OCS-G-6042/7202, Matagorda Island Blocks 633 and 634F. Five (5) copies are "Proprietary Inforaat ion" and four (4) copies are "Public Inforaat ion". The structure map 1s considered proprietary data to be exeapt froa disclosure under the Freedom o f Information Act and should not be aade available to the publ ic. In th is respect proprietary data has been removed from the copies marked public information.

Yours very t ru ly ,

SANTA FE INTERNATIONAL CORPORATION

Re: Jo int Developaent Operations Coordination Docuaent for OCS-G-6042/7202 Matagorda Island Blocks 633 and 634F Offshore, Texas

J . E. Jordan Sr. Regulatory Special ist

JEJ:sam

Enclosures

HMO On-ce WOO Sou* Frvmort A,«nuc • aamami Ca.'tom.j 91802-4000 Resoorc Tc Two Gaitt* Tow • W55 Noe' «c • SJ'W "00 • Dmm S240-662C • Te+phone (2U) 701-7300

JOINT DEVELOPMENT OPERATIONS COORDINATION DOCUNENT SANTA FE INTERNATIONAL CORPORATION

NATA60R0A ISLAND BLOCKS §33 ANO 634F OCS-6-6042/7202

In compl Unci with T i t l e 30 CFR 2S0.34 and the Regional Director 's l e t t e r of October 12, 1988 and September S, 1989 the fol lowing Information Is submitted f o r the Joint Development Operations Coordination Document (DOCO) for leases OCS-G-6042/7202 Matagorda Island Blocks 633 and 634F.

I . Description of Development Act iv i t ies

Santa Fe International Corporation Is operator of leases OCS-G-6042/7202, Matagorda Island Block 633/634.

Matagorda Island Block 633 was obtained through a farmout from Amoco. Well No. 3 was d r i l l e d in November 1968, and tested two Intervals from 7400'-7500' at +5 MMCFD each and TPIA. A DOCD for th is well was submitted to the "Minerals Management Service on May 29, 1989 and approved on June 30, 1989. Well No. 3 was completed In June 1990 with a platform and fac i l i t y deck ins ta l led thereafter. This well was placed on production in December 1990.

Under the revised Plan ot Exploration for Matago-da Island 633 Wall No. 4 was dr i l led In July 1990 and encountered 128' of net pay which tested +6 MMCFD from the bottom 20' Interval and temporarily abandoned.

Matagorda Island Block 634F was acquired In the July 1984 Lease Sale -Well Ko. 1 was d r i l l e d In March 1989 and encouncered 55'-60' of net pay which tested 14 MMCFD plus 100 BOPD and temporarily abandoned. Well No. 2 was dr i l l ed In September 1989 and temporarily abandoned In November 1989. Santa Fe plans to re-enter Well No. 2 In Apr i l 1991 and directionally d r i l l the wall to a new BHL. This should prove up an additional 6 BCF of gas. A Moss I I structure Is to be Instal led upon completion of d r i l l i n g operations.

Santa Fc proposes to do the following work under this DOCO.

Install a four p i l e , seven well production platform 1n Matagorda Ml and Block 633.

Dr i l l two addi t ional walls from tha Matagorda Island 633A production pi at Form.

Production from Matagorda Island Blocks 633/634F w i l l be processtd and commingled on the 633A platform and transported via an 8" natural gas pipeline to a t i e 1n with Seagull Pipeline In Matagorda Island Block 624 for salt In the spot market.

The estimated l i f e o ' reserves for Matagorda .'Jand Blocks 633/634F Is 10 years. Dally production 1s expected to be 40 MMCFD.

PUBLIC INFORMATICN

Activities proposed under this Joint DOCO for Matagorda Island Blocks 533/634F commenced 1n December 1990 with production to commence In December 1991.

Activity

Commence Design of Well Protector for MI 634F #2

Commence Design of Deck and Faci l i t ies MI 633A

Fabrication of 4-Pile Jacket for MI 633A

Install 4-Pile Jacket MI 633A

Approximate Start-Up Date

December 1590

January 1991

February 1991

March 1991

March 1991

March 1991

April 1991

May 1991

May 1991

Juna 1991

July 1991

August 1991

August 1991

August 1991

October 1991

November 1991

Conmence Production December 1991

2. Description of Dri l l ing Unit and Proposed Faci l i t ies

Drilling Unit

The proposed wells will be drilled with a jack-up drill ing r ig . When a rig Is selected, the rig specs will be made a part of the Application for Permit to D r i l l . Typical diverter and BOP schematics are enclosed herewith as Exhibit 1. Any rig utilized by Santa Fe will be designed, operated and maintained 1n accordance with 30 CFR 2S0.40 (b) (4).

Pollution prevention features will Include a dr i l l floor containment system with collection tank In hull.

Commence Design of 8" Pipeline Extension of MI 634F to HI 633A Platform

Commence 4" Flowline MI 634F 12 to MI 633A

Sidetrack and Complete MI 634F 12

Complete Fabrication MI 634F #2 Wall Protector

Install NI 634F #2 Well Protector

Commence Design of Deck for NI-634F #2 Well Protector

Drill and Complete MI 634F #3

Drill and Complete MI 633 #5

Complete NI 633 #4

Install 8" Pipeline Extension and 4" Flowline

Complete Fabrication of Deck for MI 634F #2

Install NI 634F #2 Well Protector Deck and MI 633A Deck and Fac i l i t i es

Safety features wil l Include well control and blowout prevention equipment as described In 30 CFR, Subpart D. Santa Fe will perform all operations In a safe and workmanlike manner and will maintain all equipment in a safe condition, thereby ensuring the protection of lease and associated f a c i l i t i e s , tha health and safety of a l l persons, and tha preservation and conservation of property and tha environment. Lifesaving appliances and fire fighting equipment on the rig will be In accordance with the U. S. Coast Guard regulations.

Description of Platforme

The Matagorda Island Block 633 "A" Platform Is a 4-p1le, 7-slot drilling/production platform. Attached as Exhibit 2 Is a schanatic of this platform.

Install a Moss I I well protaction structure at Matagorda Island Block 634F Well No. 2. See Exhibit 3 for schematic of wall structure and deck.

All hydrocarbon handling equipment for testing and production such as separators, tanks and treaters shall be designed, Installed and operated to prevent pollution.

Maintenance or repairs which ara necessary to prevent pollution of offshore waters shall be undertaken Immediately.

Curbs, gutters, drip pans, and drains shall be Installed In deck areas In a manner necessary collect a l l contaminants not authorized for discharge. 011 drainage shall ba piped to a properly designed, operated, and maintained sump system which will automatically maintain tha oil at a level sufficient to prevent discharge of oil Into offshore waters. All gravity drains shall be equipped with a water trap or other means to prevent gas In the sump system from escaping through the drains. Sump piles shall not be used as processing devices to treat or skim liquids, but may be used to collect treated-produced water, treated-produced sand, or liquids from drip pans and deck drains and as a final trap for hydrocarbon liquids in the event of equipment upsets. Improperly designed, operated or maintained sump piles which do not prevent the discharge of oil Into offshore waters shall be replaced or repaired.

There shall be no disposal of equipment, cables, chains, containers, or other Materials Into offshore waters.

3. Well Locations

A table Indicating the surface locations, bottom hole locations, total vertical depths and measured depths for these wells covered by this Joint DOCD are enclosed as Exhibit 4.

Supporting Information

1. Structure Map

A Structure Map for Matagorda Island Blocks 633 and 634F Is nel osed as Exhibit 5.

2. Btthywtry Map

A Bathymetry Map showing tha location of axisting wall and proposad walls for Matagorda Island Blocks 633 and 634F Is enclosed as Exhibit 6.

3. Shallow Hazards

Inforaation on geological hazards and surface location for Matagorda Island Block 633 Wall No. 4 was Included In our Revised Exploration Plan that was subaitted to the N1 nerals Manageaent Service on March 6, 1990. The report Indicated no magnetic anomalies, shallow gas, r iser channels or other bottoa conditions to haapar completion and production operations. A four pile jacket will ba Installed over this well. Two additional walls will ba drilled froa this location. See Exhibit 7 for copy of Shallow Hazard Report.

4. 011 Spill Contingency Plan

See Exhibit 8 for reference to our 011 Spil l Contingency Plan.

5. No new techniques or unusual technology will be required for these operations.

6. Lease Stipulations

In accoroance with Lease Stipulation No. 1 attached to lease for Matagorda Island Block 633, Amoco Production Co. submitted to the Minerals Management Service with the Plan of Exploration datad October 5, 1983 a Cultural Resources Report which assessed the potential existence of any cultural resources and was reviewed by Minerals Management Service on December 5, 1983 and satisfied the requirements of Notices to Lessees and Operators No. 75-3 (Revision No. 1).

In accordanca with Laasa Stipulation No. 1 attached to lease for Matagorda Island Block 634F, Santa Fe International Corporation submitted a Cultural Resources Report to the Minerals Management Service on June 18, 1985 which was reviewed on August 6, 1985 and satisfied the requirements of Notice to Lessees and Operators No. 75-3 (Revision No.

In accordance with Lease Stipulation No. 3 attached to leases for Matagorda Island 633/634F, Santa Fa will notify tha Chief, Naval Air Training, Naval Air Station, Corpus Chr ist i , Texas regarding air and boat operations affecting the Military Wanting Area W-228.

Santa Fe International Corporation 1s environmentally sensitive to the wildlife In the Matagorda Island Area and agrees to abide by the two conditions covering endangered whooping cranes and the Brown Pelican mentioned in Minerals Management Service letter dated April 13, 1990 approving our Revised Plan of Exploration.

7. Discharges

Listed below ara the discharges to be Incurred during dr i l l ing and production operations. Any discharge will be done within the guidelines as set forth In the Final NPDES Permit dated July 9, 1986.

Drillinq Operations

Tho anticipated discharge rates for Santa Fa's dril l ing operations for Matagorda Island Blocks 633/634F are l isted below:

* Basad on SO gals/parson/day with average 40 persons on board.

The quantity of discharge of cuttings Is based on the avaraga hole size for each saction of hole. Mud nay ba discharged for purposes of dilution or at the end of the well. Fifty percent (50*) for attached liquids to cuttings Is added to give a total dr i l l ing fluids discharge. Sewage Is treated on location. Solid domestic wastes are transported to shore for proper disposal at an authorized disposal s i te .

The fluid used for dri l l ing will be a typical lignosulfonate mud, unless otherwise noted In the drill ing prognosis. Concentrations of the chemicals In tha mud can ba estimated from the dally fluids chemical Inventory. Other surveillance of the fluid Is accomplished by the monthly and end-of-well LC 50 toxicity tests required by the EPA. A 11st of mud additives that may be used while conducting development dril l ing operations 1s enclosed as Exhibit 9.

In no Instance wil l the dril l ing fluid discharge rate exceed 1,000 bbls/hr.

Any drilling fluid contaminated with oil will be transported to shore for proper disposal at an authorized disposal s i te .

Production Operations

The volume of produced water discharge Is presently unknown. However, all produced watar discharges will be monitored In accordance with the EPA NPDES Permit.

The Natagorda Island Production platform will be manned after dril l ing operations are completed.

Deck drainage Is estimated to be approximately 900 bbls/month from the structure.

I f any solid wastes ara generated on the platform, these wastes will be transported to shore for proper disposal at an authorized disposal s i te .

8. Hydrogen Sulfide

Marathon. McMoran and Amoco has previously drilled wells 1n Matagorda Island Block 633 and no H?S was encountered. Santa Fe dril led Well No. 3 to a depth of 8246' and Well No. 4 to a depth of 8950' and encountered no H2S in either wel l .

Drilling Fluids Drill Cuttings Deck Drainage

3,000 bbls/month 2,002 bbls/month 1,500 bbls/month 2,000 gals/day* Sewage and Domestic Liquid Waste

In Matagorda Island Block 634F, Santa Fa drilled Wall No. 1 to a dapth of 13.935' and Wall No. 2 to a dapth of 10.055' and ancountarad no H2S gas.

Therefore, In accordanca with 30 CFR 250.67, Santa Fa haraby requests that a determination ba mada, that drilling and production oparations will taka place whan tha absanca of hydrogen sulfide has baan confirmed.

9. Coastal Zone Consistency

Certificate of Coastal Zone Consistency Is not applicable.

10. Projected Emissions

See Exhibit 10 for Air Quality Report.

H. Environmental Report

Environmental Raport 1s not applicable.

12. Onshore Base

Matagorda Island Blocks 633/634 are located approximately 10 miles from shore 1n watar depths of approximately 80 feet. A map showing the location of Blocks 633/634 relative to the shoreline and onshore base Is enclosed as Exhibit 11.

Santa Fe Intamatlonal Corporation will utilize the existing onshore facilities located at Harbor Island Terminal In Aransas Pass, Texas. This will serve as port of debarkation for supplies and craws. No onshore expansion or construction Is anticipated with respect to this activity.

This base 1s capable of providing the services necessary for the proposed activities. It has 24 hour service, a radio tower with a phone patch, dock space, equipment and supply storage base, drinking and drill water, etc. This will serve as our base of operations for Matagorda Island Blocks 633/634. During drilling oparations, a supply boat will maka a round trip every three days, a crew boat will maka a round trip aach day and a helicopter will make two (2) round trips per week. During production activities, a supply boat will make one (1) round trip per week and a helicopter will make two (2) round trips pcr week.

The onshore activities associated with Matagorda Island Blocks 633/634 should not result in any increase in the size and number of onshore support and storage facilities or land and personnel requirements.

Authorized Representative

Inquiries concerning this plan mey be mede to the following euthorized representative of Santa Fa International Corporation:

Nr. Jamas E. Jordan Santa Fa International Corporation Two Gallar1a Tower 13455 Noel Road, Suite 1100 Dallas, Texas 75240-6620 (214) 701-7533

LIST Of EXHIBITS

1. Typical D1 vartar vtd BOP Schematics

2. 4 Pile, 7 Slot Drilling/Production Platform

3. Schematic of Mall Structure and Deck

4. Well Information Sheet

5. Structure Maps for Matagorda Island Blocks 633 and 634F

6. Bathymetry Maps for Matagorda Island Blocks 633 and 634F

7. Shallow Hazard Report

8. 011 Spill Plan, Deployment Time and Trajectory Analysis

9. Drilling Mud Components

10. Air Quality Review

11. Vicinity PHt

•.3 6 / f 10*** hmm H.CJ

i

SFIC

DIVERTER HOOKUP

I C . 2000 ' demote Control Val»r

IC" LO.

20* 2 0 0 0 * f LC

10*. 2 0 0 0 ' Romoic Control Voiwt

SECTION *A-A.'

21 I M * 2000# Annular Pre .emer

J 10* LD

IC*. 2 0 0 0 * * * m e t e Contro' Voiveft

Exh ib i t ]

MAIN DECK T.O.S. ELEV.(V)86'-6'

^ | Omega Marine Houston. Texcs

son to fe i n t e r n o t i o n o l corp .

^ | Omega Marine Houston. Texcs

x - P l L i . 7-WILL PRODUCTION PLATFORM ^ | Omega Marine Houston. Texcs

M A T A G D P D A 'SWAND 622 - 6* TT w.O

^ | Omega Marine Houston. Texcs

ASSEMBLY ELEVATiON

J M A T A 27 DEC 90 T - 3 0 - 0 " *5S2

MBJ DCCK wpt t . f t j io ' -o '

rtooucTw oecx

A m (CATION BV: COMPANY SANTA FE INTERNATIONAL CORJ>

TTTU

taoVoNDUCTOI* (PUTUftt)

LEAH NO

•LOCK NO.

AMA

QCS-G-7202

4r4d%arMOrJ MUDMAT *

BLOCK 034F WELL » 2A MATAQOROA ISL AHP

OMRATON SANTA FE itTERNATIOWAL CORP.

WEIL INFORMATION SHEET

MATAGORDA ISLAND BLOCKS 633/634F OCS I 6061 OCS-G-7202

Woll Surficc Location BHL _Mp_ TVD WO

12 Re-Entry and Sidetrack 7003.99' FSL a 4420.15' FWL 81' of HI 634F

#5 3006' FSL a 1010' FEL 78' of Ml 633

13 3006' FSL a 1010' FEL 78' of MI 633

Exhibit 4

7 m 3EST AVAILABLE COPY y f i •

Exhlblt 6

Santo Fo International MATAGORDA ISL. 633

OFFSHORE TEXAS

BATHYMETRY MAP

Exhibit 6

Sfs^rtz fs minsrzis.in:. Two Gaiiana Tow* • 13455 No* «0 • Surto 1100 • Dallas Town 75140-5630 • Tatapnono (214) 701-7300

DRILLING HAZARDS

MATAGORDA ISLAND BLOCK 633

Cultural Resources conducted a geophysical survey over Matagorda Island Block 633. The geophysical systems used during the survey were comprised of a sub-bottom profiler, side scan sonar, magnetometer, depth sounder and 6-fold CDP Super Sparkar.

Water depths over Matagorda Island Block 633 range from 73 feet in the northwest corner to 88 feet in the southeast. Water depth over the proposed d r i l l i n g locations i s approximately 86 feet.

Location D: Shallow hazard surveys conducted over this location indicate no shallow gas, river channels, or bottom conditions to hamper dri l l i n g operations.

7. M. Stevens Sem-. Staff Geophysicist

Exhibit 7

Santa fa UiwiU. A Division ol Santa fa mtarnanona' Corooration • SfU holdings mc Santa fi-Anaovar Oil Company • Santa fa Btaun mc

OIL SPILL PLAN AND TRAJECTORY ANALYSIS

MATAGORDA ISLAND BLOCKS 633/634

Santa Fa has an approved 011 Spi l l Contingency Plan for the Gulf of Mexico. An updated plan was subnltted to Minerals Managenent Service on Novenber 6, 1990 in accordance wi th 30 CFR 2S0.42 (a-1) and approved on January 28, 1991. in the event of a s p i l l , th is plan w i l l be act ivated.

Santa Fe Is a member of Clean Gulf Associates (CGA), and in the event of a s p i l l at Matagorda Island Blocks 633/634F, equipment would be mobilized from the CGA stockpile at Aransas Pass, Texas.

Estimated response tima fo r a sp i l l at Matagorda Island Blocks 633/634F during nonnal weather conditions would be 10 hours based on the fol lowing:

A. Procurement Time:

1. Estimated time to assemble the equipment 2.0 Hours

2. Estimated time to procure transportation vessel and deployment to CGA base at Aransas Pass, Texas 4.0 Hours

3. Secure personnel to load and operated the equipment 2.5 Hours

Maximum Procurement Time 4.0 Hours

B. Equipment Load Out 2.0 Hours

C. Travel to lease s i t e from CGA Base (30 miles at 10 miles/hour - 3 hours) (1/2 hour to t ravel to open water)

3.5 Hours

0. Deployment of equipment at sp i l l s i te 0.5 Hours

Total Time 10.0 Hours

The Minerals Management Service published an Oil Spi l l Risk Estimates for the Lease Sales 131, 135 and 137 (Hannon and Lear, 1989). The results of that analysis as i t related to Matagorda Island Blocks 633/634F are summarized in the following paragraphs. A detailed description of the model used in the Minerals Management Service analysis can be found in papers by Smith et al (1982), Lafear and Samuels (1981), La Belle and Anderson (1985), and La Belle (1986).

Exhibit 8

Matagorda Island Blocks 633/634F f a l l s in Launch Sita 4 ( re f : o i l sp i l l launch aap furnished by M1rara1s Managaaant Service on June 2, 19B9). The probabi l i t ies (expressed as percentage of chance) that a s p i l l occurring In t h i s block wi l l contact la.id within 10 days ara l is ted below:

Environmental Resource Category Probabil i ty

Land Segaent 5 Nueces, Texas San Pat r ic io , Texas IX

Land Segment 6 Aransas, Texas 4% Land Segment 7 Calhoun, Texas 41% Land Segment 8 Matagorda, Texas 23%

The environmental resources that are located within these land segments are depicted on the maps l i s t e d below found 1n Section V, Vol uaa I I of the Clean Gul f Associates Operetions Manual.

Texas

Map 2 Ident i f icat ion of the Biological ly Sensitive Areas V-32.0e thru V-42.Ob and Protection Response Modes for the Biological ly Sensitive Areas V-43.0 th ru V-52.0a.

Map 3 Ident i f icat ion of the Biological ly Sensitive Areas V-54.0a thru V-62.0b and Protection Response Modes for the Biological ly Sensitive Areas V-63.0a thru V-68.0a.

The recommended response strategies to protect these resources are presented on pages VI-1.Ob through VI-23.0 of Section I I of the CGA Operations Manual.

Literature Cited

Hannon, L. J . and Eileen M. Lear 1989 Draft o i l - s p i l l r i s k analysis: Gulf of Mexico (proposed sales 131,

135 and 137) outer continental shelf. USDOI, MMS, Offshore Environmental Assessment Division, Branch of environmental Modeling, Herndon, VA.

La Bel le , R. P. 1986 Use of applied oceanography in stochastic modeling of o i l sp i l l s on

the outer cont inental shelf. Proceedings of OCEANS 86 Conference, September 1986.

La Bel le, R. P. and C. M. Anderson 1985 The application of oceanography to o i l - s p i l l modeling for the outer

continental shel f o i l and gas leasing program. Marine Tech. Soc. Journal 19(2):19-26

Exhibit 8

Lanfear, K. J . and W. B. Samuels 1981 Documentation of user s guide to the U. S. Geological Survey oil spil l

risk analysis modal: oil spi l l trajectories and the calculation of conditional probabilities. USGS Open-File Report 81-316. 95 pp.

Smith, R. A., J . R. Slack, T. Uyant, and K. J . Lanfear 1982 The oil sp i l l r isk analysis model of the U. S. Geological Survey, USGS

Professional Paper 1227. 40 op.

Exhibit 8

DF.: .IKS YZb CC"-rOtsT.~S U3g CD^SK CKZMICAL QF. CKDSCAL TRADE KA?g

Aluuinua Stearate "ALTATLO-S" Bar i te Caleiua Carbonate Caleiua Chloride Caleiuc Orlot Caleiua Su l fa t e Carboryraethyl Ce l lu lose Caustic Potash Caustic Soda Chrcae L i g n i t e Chrorae Lignosul f onate Drilling, Batarfaat " I - P a l "

Jtrrochroae L i g n o s u l f o n a t e Cel

Gypsua

L i g n i t e L i goosulfonate "Mud Sweep" "MOF.-F.II" "Sha le -Trd" Sapp Soda Ash Sodiun 2icarbcoace Sodiua Carbcryaer::yl Cel lulose Sodiun Chicride Sodiun Chrcaatt Starch "~-901C" "?0?.C~:rin" "Black l U g i c " "l l iz t . Mftglc tapers lx" r i . n i

" J e l f l a k e " i d LA

•'?ipe-Las:,• "VaLL-Nut" »ooc Fibers

DESCT.LT7I0K OF MATTRlAl

Aluainua Stearate Konionic Sur fac t an t Bariua Sul fa te (BaSo^) Araroui te (CaCc,) Byd ropk i l i t e (CaCl , ) Liae (Quick) Aahydriate (CaSO ) Carborraethy: Ca . l u lo se Potaasiuc Rycrate Sodiua Bydroxide (NaOE) Chroae LifBlta Chroae L ipnosu l fona t e Soap

Nor - tox ic . Biodegradable d t foaae r - t : : - e : f r o r vood p u l p Sodivs a o n t a o r i l l e n i a t e , b e n t o n i t e , a t t a p u l g i t e

L i j r . i t . L ipnosul fonate Ctaent P r e - f l u s h Pydroloreed Caraal S o l i d Orgaac—aiuainun eoasle.: Sodiun Acid Pyrophosphate Sodiun Carbonate KaSCOJ Sodiun GarbcryaethyL Ce l lu lo se XaC2 KaCrOA.lCalO Com Starch Biodegradable d r i l l i n g l u b r i c a n t Biodegradable d r i l l i n g l u b r i c a n t O i l base sud cone. Sacked concentrated c i l baat aud t-sed to air. c e r t a i n L e s s - c i r r u l a r i c n p i l l s P l a s t i c f e l l , shredded ee l lophaa t L o s s - c i r c u l a t i o n n a t e r i a l Surfactant n ixed v i t h d i a a a i Ground va lau t s h e l l s L-oss-circuLat icn a a t e r i a l

Exhibit 9

AIR QUALITY REVIEW FOR

MATAGORDA ISLAND AREA BLOCKS 633 ANO 634F OCS-G-6042 AND OCS-G-7202

SANTA FE INTERNATIONAL CORPORATION 13455 NOEL ROAD, SUITE 1100 DALLAS. TEXAS 75240-6620

SUBMITTED TO: HR. JAMES E. JORDAN

SENIOR REGULATORY SPECIALIST

FEBRUARY 27, 1991

PREPARED BY JOHN E. CHANCE & ASSOCIATES, INC. REGULATORY & ENVIRONMENTAL DIVISION

PROJECT NO. 91-8048

John E. Chance •% Aamoo-, Inc. Exhibit 10

Projected Emissions Schedule for Project

I . General Infonnation

Location of F a c i l i t y - Matagorda Island Area Blocks 633 and 634F

Nee* of Rig/Pi at for* - Jeck Up Orill inc Rig, Production Platform, and a Single Uell Platform

Owner/Operator - Santa Fe International Corporation ~wo Gall ar i a Tower 13455 Noel Road, Suite UOO Dal las, Texas 75240-6620

Contact Person - Mr. James E. Jordan Senior Regulatory Special ist

Project Start Data - March 1991 Project End Date - Merch 2002

27,510 Feet to be Dr i l led 10 Miles Offshore

I I . Total Enissions f o r Construction

Total Time f o r Construction: 2 months

Projected Enissions (Pounds/Day of Construction)

Emitted Substance CO S02 N0X VOC TSP

Welding Machines 16.90 5.19 78.08 6.25 5.58

Crane 2.32 0.71 10.74 0.86 0.77

Crewboat 73.02 * 25.69 30.52 *

Supply Boat 13.07 * 93.05 50.95 *

Helicopter 11.58 0.37 1.16 1.06 0.51

Derrick Barge 689.88 309.25 2616.77 76.12 261.68

Pipeline Lay Barge 21.62 6.64 99.91 7.99 7.14

Tug Boat Assist 134.78 * 663.12 63.72 *

V John C. Chance et Ammoo^ Inc.

Construction Eaissions (Continued)

Calculated construction eaissions are based on the following factors:

Crewboat horsepower of 2,000 Port of Aransas Pass, Texas Waiting Tlae 2 hour(s) per t r i p

3 t r i p ( s ) per week

Supply Boat horsepower of 2,500 Port of Aransas Pass, Texas Waiting Tlae 24 hours(s) per t r i p

3 t r1p(s) per week

Helicopters Port of Aransas Pass, Texas

3 t r i p ( s ) per week

Derrick Barge horsepower of 4,500 Working for 20 day(s)

Pipeline Lay targe Working for 10 day(s)

Tugboat Assist horsepower of 3,500 Working for 10 day(s)

Two Cranes horsepower of 110 Operating 4 hour(s) per day for 12 day(s)

Four Welding Machines horsepower of 50 Operating 12 hour(s) per day for 32 day(s)

Total Eaissions for Dr i l l i ng

Total Time for D r i l l i n g 3 wel ls: 4 months

Projected Eaissions (Pounds/Day of D r i l l i ng )

Emitted Substance CO S02 NO, VOC TSP

Dr i l l ing Rig 86.65 38.84 328.66 9.56 32.87

Cranes 5.87 1.80 27.13 2.17 1.94

Welding Machine 1.33 0.41 6.17 0.49 0.44

Crewboat 79.10 * 27.83 33.07 *

Supply Boat 14.16 * 100.80 55.20 *

Stand-by Boat 2.72 2.75 13.97 1.79 •

•John E. Chance et Ammoo^ Intu

Projected Eaissions (Continued)

Emitted Substance CO so, M0X VOC TSP

Helicopter U.M 0.40 1.25 1.14 0.55

Tow Tugboat(s) 404.35 * 1969.36 191.16 *

C u t Ing Skid 64.07 19.69 296.04 23.68 21.15

Calculated d r i l l i n g eaissions are based on the following factors:

Dr i l l ing R' ei issions are based on 60 horsepower-hour/foot d r i l l e d ;

Two Cranes, horsepower of 110 each, operating four hours/day;

Welding Machine, hc-sepower of 50, operating four hourr/day.

Crewboat horsepower of 2.000 Port of Aransas Pass, Texas Waiting Tlae 2 hour(s) p i r t r i p

7 t r l p ( s ) per week

Supply Boat horsepower of 2,50" Port of Aransas Pass, Texas Waiting Tlae 24 hours(s) per t r i p

1 t r i p every three days

Stand-by Boat Generator Rating 200 ki lowatts

Running 24 hou» [ ) per day

Helicopters Port of Aransas Pass, Texas

2 t r l p ( s ) per week

Towing Tugboats horsepower of 3,600 each Working for 6 day(s)

Ceaenting Skid horsepower of 400 Working for 1 day(s) per well

Total Emissions for Production

Total T1ae for Production: 10 years

John tZ Chance et Ammoc^ tna.

Projected Emissions (Pounds/Day of Production)

Emitted Substance CO so2 N0X VOC TSP

Stand-by Boat 2.72 2.75 13.97 1.79 *

Helicopter 12.54 0.40 1.25 1.14 0.55

Supply Boat 1.18 * 8.40 4.60 *

Venting Emissions * * * 561.75 *

Calculated production enissions are based on the following factors:

Ventmg enissions i re based .n "*5 cubic feet of gai ver*ec" oer barrel of o i l produced. Average specif ic gravi ty of the gas is assumed to be .65;

Two cranes, horsepower of 110 each, operating two hours/day.

Helicopters Port of Aransas Pass, Texas

2 t r1p(s) per week

Stand-by Boat Generator Rating of 200 ki lowatts

Running for 24 hours per day

Supply Boat wi th horsepower of 2,400 Port of Aransas Pass, Texas

Waiting Time 2 hour(s) per t r i p 1 t r i p per week

Project Summary, Total Emissions

Emitted Substance CO so2 N0X

VOC TSP

Allowable ( tons/yr ) 15781 33J 333 333 333

Projected Emissions (Tons/Year)

Year 1 22.62 6.28 70.57 24.89 5.08 Year 2 5.12 1.14 15.88 106.66 0.27 "ear 3 5.12 1.14 15.88 106.66 0.27 Year 4 5.12 1.14 15.88 106.66 0.27 Year 5 5.12 1.14 15.88 106.66 0.27 Year 6 5.12 1.14 15.88 106.66 0.27 Year 7 5.12 1.14 15.88 106.66 0.27

John tZ Chanco et Amaoc^ inc.

Total Emissions (Continued)

Emitted Substance CO SO{ N0X VOC TSP

Projected Emissions (Tons/Year)

Year 8 Year 9 Year 10 Year 11

5.12 5.12 5.12 5.12

1.14 1.14 1.14 1.14

15.88 15.88 15.88 15.88

106.66 106.66 106.66 106.66

0.27 0.27 0.27 0.27

Total Emissions are comprised of a l l Construction, D r i l l i n g , and Production Emissions.

V I . Findings o ' A i r Quality Review

As per DOI-MMS regulations, th is f a c i l i t y is exempt from further air quality review as i t has been determined that i t s operation w i l l not have a s ign i f i cant adverse environmental impact on a i r qual i ty . Calculated emissions are for a worst case condition. Actual emissions from this project w i l l probably be lower.

VII. Methodology

Dri l l ing - horsepower-hour/ft d r i l l e d method Boats - horsepower-hour method Helicopters - landing/takeoff (LTO) cycle method All Others - horsepower-hour method

VIII References

ATMOSPHERIC EMISSIONS FROM OFFSHORE OIL DEVELOPMENT AND PROOUCTION, EPA-450/3-77-026 (June, 1977).

COMPILATION OF AIR POLLUTANT EMISSIONS FACTORS, EPA Report AP 42 (September, 1985), 4th Edit lor..

* The EPA does not provide S02 and TSP emission factors for boat engines or TSP emission factors for diesel powered electr ical generates In vessels.

John E. Chance at ABBOO^ Ino,

# EMISSION SOURCES AT THIS ELEVATION INCLUDE : SUPPLY BOATS. CREW BOATS. ANO STANDBY BOATS.

PREPARED BY J»** £. Chonce S Mstocioles, lnc L«f0ftftfl>, Loyinana

T Y P I C A L P R O D U C T I O N P L A T F O R M

• EMISSION SOURCES AT THIS ELEVATION INCLUDE : POWER GENERATION EOUIPMENT. OAS COMPRESSION. HEATER TREATER. VENTING, HELICOPTERS. AND WELDING MACHINES.

• EMISSION SOURCES AT THIS ELEVATION INCLUDE I SUPPLV BOATS. CREW BOATS. AND STANDBY BOATS.

PREPARED BY

John £. Chance 8 Assoao'es, Ine Laf oyer te , Louisionc

MAHJ DECK

TYPICAL WELL PROTECTOR

EMISSION SOURCES AT THIS ELEVATION INCLUDEi POWER GENERATION EOUIPMENT. CAS COMPRESSION. HEATER TREATER. V E N T I N G . HELICOPTERS. AND WELDiNC MACHINES.

EMISSION SOURCES AT THIS ELEVATION INCLUDE: SUPPLY BOATS. CREW BOATS. AND STANDBY BOATS

John E. Chance A Assoc., Intu

g f Santa Fa International Corp.

MATAGORDA ISL. 633 & 634F OFF8HOM: TUX AS

OCS-G-6042 OCS-G-7202

DOCD VICINITY PLAT