A5-58

Delineation Drilling Activities Offshore Santa Barbara County

APPENDIX 5.3. OIL-ON-WATER: SOURCES,

BEHAVIOR, RESPONSE

The purpose of this Appendix is to provide the

reader with information on the sources of petroleum

hydrocarbons to the sea, to discuss activities which

may cause these inputs that are discussed in the EIS

and those sources considered in the cumulative analysis. Other topics addressed include, responses to oil

spills, how oil changes when it is spilled on water, how

various organizations respond to oil spills, and the

tools they have available in the “response tool box”.

SOURCES OF OIL

In 1985, the National Research Council’s Steering Committee for the Petroleum in the Marine Environment Update, issued a book entitled, “Oil in the

Sea: Inputs, Fates, and Effects (NRC, 1985). The NRC

is updating this information but it is not available for

direct citation until June, 2002; however, sources

within the document were used. Data and information from Pacific OCS Region (POCSR) records were

also used to ascertain the sources and amount of oil

contributed to the sea.

OIL AND GAS EXPLORATION ACTIVITIES

Exploration activities include mobilization and

operations on the drilling vessel and other associated

activities as support vessels. Two general potential

sources exist for spills during exploration activities:

• Spills during drilling operations due to loss of

well control (blowouts), and

• Spills from other exploratory activities including those related to support vessels.

Minerals Management Service oil spill records

do not differentiate between spills from development

operations and from exploratory operations. In small

part, this is due to the fact that few exploratory wells

are drilled from fixed platforms. Mainly, however, it

is because spills resulting from drilling on any facility has similar causes and risks. Exploratory drilling

is subjected to more unknowns geologically, hence increasing the inherent risks. Recent technological innovations, however, that have greatly lessened the risk

from this last eventuality include:

• Increased knowledge of nondrilled geology

from such methods as 3-D seismic surveys and

improved data processing;

• A better ability to control wells by intensive

monitoring of a plethora of downhole data

while drilling is occurring; and

• Intensive training and drills by facility workers, resulting in a readiness and an instant

responsiveness to unexpected events.

Spills during drilling due to loss of well

control

MMS investigates blowouts and provides reports

describing the circumstances surrounding the incidents with the ultimate goal of prevention through

the use of safety alerts and other regulatory means.

Table 5.3-1 summarizes each of the blowouts for years

1992-present. This report is based on information

contained in the MMS Technical Information Management System for the years 1995 through 2000, and

in MMS files for the years prior to 1995. Some data

details may not be available for 1999 through 2001

because investigations have not yet been completed.

Most incidents involve everyday operations and duties. By providing brief descriptions of each blowout,

MMS is trying to prevent similar incidents from occurring in the future. A total of 38 blowouts occurred

in this 9 year period.

Of the 38 events summarized in table 5.3-1, 4

separate events resulted in a total spillage of 302 bbl

of hydrocarbons. Twenty-six of the 38 events occurred

during drilling, and 25 occurred during development

(rather than exploration) operations. Only two events

occurred in the POCSR, both as a result of workover

operations; during one of these, in November 2000,

approximately 1 gallon of oil was spilled.

http://www.mms.gov/stats/OCSincident.htm

1992 1993 1994 1995 1996 1997 1998 1999 2000 2001

Gulf of Mexico Region 3 3 0 1 4 5 6 5 8 1

Pacific Region 0 0 0 0 0 0 1 0 1 0 

Total 3 3 0 1 4 5 7 5 9 1 

Revised 3/13/01 

Table 5.3-1. Uncontrolled well (Blowout) information. Compiled from MMS’s website:

http://www.mms.gov/stats/OCSincident.htm
A5-82

Delineation Drilling Activities Offshore Santa Barbara County Appendix 5.4 - Emission Data and Assumptions Tables Table 5.4-1. Electromotive drilling requirements.

Table 5.4-2. Drilling phase emission factors.

Electromotive Drilling Requirements 

 Duration (Days)2 Power Requirement (hp-hr) Drilling Phase 

Engine Load (hp)1

Hours/Day Bonito Pt. Sal Purisima 

Point 

Gato Canyon 

Bonito Point Sal Purisima 

Point 

Gato Canyon 

Movement 2765 24 2.75 2 2 1 182,490 132,720 132,720 66,360 Site Prep. 2050 24 2 1 1 3 98,400 49,200 49,200 147,600 Drilling 1785 24 23.5 29 23 21.5 1,006,740 1,242,360 985,320 921,060 Tripping 1730 24 4.75 4 4 6.5 197,220 166,080 166,080 269,880 Set Casing 1239 24 6.5 5 5 18 193,284 148,680 148,680 535,248 Recover Casing 

1319 24 2.25 0 0 1 71,226 0 0 31,656 

Logging 744 24 7.25 5 5 6 129,456 89,280 89,280 107,136 Testing 1049 24 27.5 21 21 30 692,340 528,696 528,696 755,280 Abandon Well 

1240 24 3.5 5 5 4 104,160 148,800 148,800 119,040 

Standby 983 24 10 2 2 4 235,920 47,184 47,184 94,368  Total 90 74 68 95 2,911,236 2,553,000 2,295,960 3,047,628 Equipment  Cranes 600 2 60 60 60 60 72,000 72,000 72,000 72,000 1 - Assessment of NOx Control Measures for Diesal Engines on Offshore Exploratory Drilling Vessels and Rigs. Radian, 1982- 2.Provided in project description. 

Drilling Phase Emission Factors 

 Emission Factors 

Equipment Hrs/day Days Load NOx CO VOC SO2 PM10 Units Reference 

Main Engines 24 * 7.10 0.95 0.04 0.16 0.31 g/bhp-hr 1990 

SEDCO 712 

Source test 

Cranes 2 60 600 8.96 3.48 0.04 0.16 0.31 g/bhp-hr 

Flare 24 4 0.7mmcf/

day 

100 35.0 6.4 4.1 5.0 lbs/mmcf AP-42 (1.4-1)

*Variable
A5-83

Appendix for Chapter 5

Drilling Phase Emission Estimates 

Hourly Emissions Daily emissions Total Emissions 

 (lbs/hr) (lbs/day) (tons) Drilling Operation 

NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10

Bonito  Drilling Activities 

21.10 2.82 0.12 0.48 0.92 506.31 67.75 2.85 11.41 22.11 22.78 3.05 0.13 0.51 0.99 

 Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 

Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 

 Total 35.87 8.44 0.36 0.81 2.39 600.01 101.46 7.44 14.7 28.26 23.63 3.38 0.14 0.53 1.08 Pt. Sal  Drilling Activities 

22.50 3.01 0.13 0.51 0.98 540.1 72.26 3.04 12.17 23.58 19.98 2.67 0.11 0.45 0.87 

 Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 

Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 

 Total 37.27 8.63 0.37 0.84 2.45 633.8 105.97 7.63 15.46 29.73 20.83 3.00 0.12 0.47 0.96 Purisima  Drilling Activities 

22.02 2.95 0.12 0.50 0.96 528.49 70.71 2.98 11.91 23.08 17.97 2.40 0.10 0.40 0.78 

 Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 

Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 

 Total 36.79 8.57 0.36 0.83 2.43 622.19 104.42 7.57 15.20 29.23 18.82 2.73 0.11 0.42 0.87 Gato  Drilling Activities 

20.92 2.80 0.12 0.47 0.91 502.14 67.19 2.83 11.32 21.92 23.85 3.19 0.13 0.54 1.04 

 Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 

Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 

 Total 35.69 8.42 0.36 0.80 2.38 595.84 100.90 7.42 14.61 28.07 24.70 3.52 0.14 0.56 1.13 

Table 5.4-3. Drilling phase emission estimates per Proposed Action.
A5-84

Delineation Drilling Activities Offshore Santa Barbara County Table 5.4-4. Purisima Point Mobile Source Emission Factors. Table 5.4-5. Purisima Point Mobile Source Emission Estimates. Purisima Point Mobile Source Emission Factors Emission Factors Vessel Hrs/day Days Load Fuel Rate (gal/mi) Mileage (R/T) NOx CO VOC SO2 PM10 Units Reference Crew boat Idle 1 21 2.97 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) Cruise 12 2.97 220 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) Supply Boat Idle 1 18 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) Cruise 18 8.24 220 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) Tug Boats Small Idle 8 1 20 33.7(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3) Manuever 16 1 50 84.3(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3) Large Idle 8 3 20 56.2(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3) Manuever 16 3 50 140.5(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3) Helicopters LTO 80 3.02 13.54 6.78 0.44 0.40 Lbs/cycle AP-42 (II-1-10) Cruise 40 (hrs) 6.4 5.0 0.70 0.9 0.8 Lbs/mile AP-42 (II-1-8)

Purisima Point Mobile Source Emissions 

 Hourly Emissions Daily emissions Total Emissions Vessel (lbs/hr) (lbs/day) (tons)  NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10Crew boat 

Idle 1.12 0.53 0.71 0.03 0.14 1.12 0.53 0.71 0.03 0.14 0.01 0.01 0.01 0.00 0.00 

 Cruise 14.53 6.88 9.27 0.38 1.82 174.46 82.52 111.21 4.61 21.89 1.05 0.50 0.67 0.03 0.13 Supply Boat 

Idle 2.24 1.06 1.43 0.06 0.28 2.24 1.06 1.43 0.06 0.28 0.02 0.01 0.01 0.00 0.003 

 Cruise 40.33 19.08 25.71 1.06 5.06 484.02 228.96 308.54 12.78 60.73 4.36 2.06 2.78 0.11 0.55 Tug Boats  Small (2) 

Idle 21.91 7.43 2.67 0.48 2.22 175.24 59.42 21.35 3.83 17.79 0.09 0.03 0.01 0.00 0.01 

 Manuever 59.01 16.37 4.97 1.20 5.56 944.16 261.94 79.58 19.15 89.02 0.47 0.13 0.04 0.01 0.04  Large (2) 

Idle 36.53 12.39 4.45 0.80 3.71 584.48 198.18 71.22 12.77 59.35 0.88 0.30 0.11 0.02 0.09 

 Manuever 98.35 27.29 8.29 1.99 9.27 786.8 218.28 66.32 15.96 74.18 1.18 0.33 0.10 0.02 0.11 Helicopters  LTO 6.05 27.1 13.55 0.90 0.80 6.05 27.1 13.55 0.90 0.80 0.12 0.54 0.27 0.02 0.02  Cruise 6.40 5.00 0.70 0.90 0.80 6.40 5.00 0.70 0.90 0.80 0.13 0.10 0.01 0.02 0.02 

Total 
A5-85

Appendix for Chapter 5

Table 5.4-6. Point Sal Mobile Source Emission Factors.

Table 5.4-7. Point Sal Mobile Source Emission Estimates.

Point Sal Mobile Source Emission Factors 

Emission Factors 

Vessel Hrs/day Days Load Fuel Rate 

(gal/mi) 

Mileage (R/T) 

NOx CO VOC SO2 PM10 Units Reference 

Crew boat 

Idle 1 21 2.97 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) 

Cruise 14 2.97 240 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)

Supply Boat 

Idle 1 18 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)

Cruise 22 8.24 240 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)

Tug Boats  Small 

Idle 8 1 20 33.7(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3)

 Manuever 16 1 50 84.3(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3) Large 

Idle 8 3 20 56.2(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3)

 Manuever 16 3 50 140.5(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3)Helicopters  LTO 100 3.02 13.54 6.78 0.44 0.40 Lbs/cycle AP-42 (II-1-10) 

Cruise 50 (hrs) 6.4 5.0 0.70 0.9 0.8 Lbs/mile AP-42 (II-1-8)

Point Sal Mobile Source Emissions 

 Hourly Emissions Daily emissions Total Emissions Vessel (lbs/hr) (lbs/day) (tons)  NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10Crew boat 

Idle 1.12 0.53 0.71 0.03 0.14 1.12 0.53 0.71 0.03 0.14 0.01 0.01 0.01 0.00 0.00 

Cruise 15.86 7.50 10.11 0.42 1.99 190.32 90.03 121.32 5.03 23.88 1.33 0.63 0.85 0.04 0.17 

Supply Boat 

Idle 2.24 1.06 1.43 0.06 0.28 2.24 1.06 1.43 0.06 0.28 0.02 0.01 0.01 0.00 0.00 

Cruise 44.00 20.81 28.05 1.16 5.52 528.02 249.77 336.59 13.94 66.25 5.81 2.75 3.70 0.15 0.73 

Tug Boats  Small 

Idle 21.91 7.43 2.67 0.48 2.22 175.24 59.42 21.35 3.83 17.79 0.09 0.03 0.01 0.00 0.01 

 Manuever 59.01 16.37 4.97 1.20 5.56 944.16 261.94 79.58 19.15 89.02 0.47 0.13 0.04 0.01 0.04  Large 

Idle 36.53 12.39 4.45 0.80 3.71 584.48 198.18 71.22 12.77 59.35 0.88 0.30 0.11 0.02 0.09 

 Manuever 98.35 27.29 8.29 1.99 9.27 786.8 218.28 66.32 15.96 74.18 1.18 0.33 0.10 0.02 0.11 Helicopters  LTO 6.00 27.20 13.60 0.80 0.80 6.00 27.20 13.60 0.80 0.80 0.15 0.68 0.34 0.02 0.02 

Cruise 6.40 5.20 0.80 0.80 0.80 6.40 5.20 0.80 0.80 0.80 0.16 0.13 0.02 0.02 0.02 
A5-86

Delineation Drilling Activities Offshore Santa Barbara County Table 5.4-8. Bonito Mobile Source Emission Factors.

Table 5.4-9. Bonito Mobile Source Emission Estimates.

Bonito Mobile Source Emission Factors 

Emission Factors 

Vessel Hrs/day Days Load Fuel Rate 

(gal/mi) 

Mileage (R/T) 

NOx CO VOC SO2 PM10 Units Reference 

Crew boat 

Idle 1 21 2.97 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) 

Cruise 18 2.97 204 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)

Supply Boat 

Idle 1 18 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)

Cruise 23 8.24 204 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)

Tug Boats  Small 

Idle 8 2 20 33.7(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3)

 Manuever 16 2 50 84.3(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3) Large 

Idle 8 4.75 20 56.2(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3)

 Manuever 16 4.75 50 140.5(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3)Helicopters  LTO 180 3.02 13.54 6.78 0.44 0.40 Lbs/cycle AP-42 (II-1-10) 

Cruise 90 (hrs) 6.4 5.0 0.70 0.9 0.8 Lbs/mile AP-42 (II-1-8)

Bonito Mobile Source Emissions 

 Hourly Emissions Daily emissions Total Emissions Vessel (lbs/hr) (lbs/day) (tons)  NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10Crew boat 

Idle 1.12 0.53 0.71 0.03 0.14 1.12 0.53 0.71 0.03 0.14 0.01 0.01 0.01 0.00 0.00 

 Cruise 13.48 6.38 8.59 0.36 1.69 161.77 76.52 103.12 4.27 20.30 1.42 0.67 0.90 0.04 0.18 Supply Boat 

Idle 2.24 1.06 1.43 0.06 0.28 2.24 1.06 1.43 0.06 0.28 0.02 0.01 0.01 0.00 0.00 

 Cruise 37.40 17.69 23.84 0.99 4.69 448.82 212.31 286.10 11.85 56.31 5.05 2.39 3.22 0.13 0.63 Tug Boats  Small 

Idle 21.91 7.43 2.67 0.48 2.22 175.24 59.42 21.35 3.83 17.79 0.18 0.06 0.02 0.00 0.02 

 Manuever 59.01 16.37 4.97 1.20 5.56 944.16 261.94 79.58 19.15 89.02 0.94 0.26 0.08 0.02 0.09  Large 

Idle 36.53 12.39 4.45 0.80 3.71 584.48 198.18 71.22 12.77 59.35 1.39 0.47 0.17 0.03 0.14 Manuever 98.35 27.29 8.29 1.99 9.27 786.8 218.28 66.32 15.96 74.18 1.87 0.52 0.16 0.04 0.18 

Helicopters  LTO 6.00 27.11 13.56 0.89 0.89 6.0 27.11 13.56 0.89 0.89 0.27 1.22 0.61 0.04 0.04  Cruise 6.44 5.11 0.66 0.89 0.89 6.44 5.11 0.66 0.89 0.89 0.29 0.23 0.03 0.04 0.04 
A5-87

Appendix for Chapter 5

Table 5.4-10. Gato Canyon Mobile Source Emission Factors.

Table 5.4-11. Gato Canyon Mobile Source Emissions.

Gato Canyon Mobile Source Emission Factors 

Emission Factors 

Vessel Hrs/day Days Load Fuel Rate 

(gal/mi) 

Mileage (R/T) 

NOx CO VOC SO2 PM10 Units Reference 

Crew boat 

Idle 1 21 2.97 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) 

 Cruise 7 2.97 50 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)Supply Boat 

Idle 1 18 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)

 Cruise 25 8.24 100 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)Tug Boats  Small 

Idle 8 3 20 33.7(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3)

 Manuever 16 3 50 84.3(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3) Large 

Idle 8 4 20 56.2(gal/hr) 325 97.1 29.5 7.1 33 lbs/1000 gal AP-42 (II-3-3)

 Manuever 16 4 50 140.5(gal/hr) 350 110.2 39.6 7.1 33 lbs/1000 gal AP-42 (II-3-3)Helicopters  LTO 168 3.02 13.54 6.78 0.44 0.40 Lbs/cycle AP-42 (II-1-10)  Cruise 21 (hrs) 6.4 5.0 0.70 0.9 0.8 Lbs/mile AP-42 (II-1-8)

Gato Canyon Mobile Source Emissions 

 Hourly Emissions Daily emissions Total Emissions Vessel (lbs/hr) (lbs/day) (tons)  NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10Crew boat 

Idle 1.12 0.53 0.71 0.03 0.14 1.12 0.53 0.71 0.03 0.14 0.01 0.01 0.01 0.00 0.00 

Cruise 3.30 1.56 2.11 0.09 0.41 39.65 18.76 25.27 1.05 4.97 0.14 0.07 0.09 0.00 0.02 

Supply Boat 

Idle 2.24 1.06 1.43 0.06 0.28 2.24 1.06 1.43 0.06 0.28 0.02 0.01 0.01 0.00 0.00 

Cruise 18.33 8.67 11.69 0.48 2.30 220.01 104.07 140.24 5.81 27.60 2.75 1.30 1.75 0.07 0.35 

Tug Boats  Small 

Idle 21.91 7.43 2.67 0.48 2.22 175.24 59.42 21.35 3.83 17.79 0.26 0.09 0.03 0.01 0.03 

 Manuever 59.01 16.37 4.97 1.20 5.56 944.16 261.94 79.58 19.15 89.02 1.42 0.39 0.12 0.03 0.13  Large 

Idle 36.53 12.39 4.45 0.80 3.71 584.48 198.18 71.22 12.77 59.35 1.17 0.40 0.14 0.03 0.12 

 Manuever 98.35 27.29 8.29 1.99 9.27 786.8 218.28 66.32 15.96 74.18 1.57 0.44 0.13 0.03 0.15 Helicopters  LTO 5.95 27.14 13.57 0.95 0.71 5.95 27.14 13.57 0.95 0.71 0.25 1.14 0.57 0.04 0.03 

Cruise 9.29 29.52 13.81 1.43 1.19 9.29 29.52 13.81 1.43 1.19 0.39 1.24 0.58 0.06 0.05 
A5-88

Delineation Drilling Activities Offshore Santa Barbara County Table 5.4-12. Total emission estimates by unit. Total Emission Estimates by Unit Hourly Emissions Daily emissions Total Emissions (lbs/hr) (lbs/day) (tons) Drilling Operation NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10 Bonito Drilling 21.10 2.82 0.12 0.48 0.92 506.31 67.75 2.85 11.41 22.11 22.78 3.05 0.13 0.51 0.99 Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 Vessels 10.06 0.24 1.15 4.06 4.22 241.56 5.78 27.56 97.33 101.33 10.87 0.26 1.24 4.38 4.56 Helicopter 12.44 1.78 1.60 32.08 14.26 12.44 1.78 1.60 32.08 14.26 0.56 0.08 0.07 1.44 0.64 Total 58.37 10.46 3.11 36.95 20.87 854.01 109.02 36.6 144.11 143.85 35.06 3.72 1.45 6.35 6.28 Pt. Sal Drilling 22.50 3.01 0.13 0.51 0.98 540.1 72.26 3.04 12.17 23.58 19.98 2.67 0.11 0.45 0.87 Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 

Vessels 11.02 0.27 1.30 4.71 5.44 264.59 6.49 31.08 112.97 130.54 9.79 0.24 1.15 4.18 4.83 

 Helicopter 12.44 1.78 1.60 32.08 14.26 12.44 1.78 1.60 32.08 14.26 0.31 0.04 0.04 0.80 0.36  Total 60.73 10.68 3.27 37.63 22.15 910.83 114.24 40.31 160.51 174.53 30.93 3.28 1.31 5.45 6.15 Purisima  Drilling 22.02 2.95 0.12 0.50 0.96 528.49 70.71 2.98 11.91 23.08 17.97 2.40 0.10 0.40 0.78  Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 

Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 Vessels 9.87 0.25 1.15 4.12 4.56 236.76 5.88 27.64 98.82 109.41 8.05 0.20 0.94 3.36 3.72 

 Helicopter 12.44 1.78 1.60 32.08 14.26 12.44 1.78 1.60 32.08 14.26 0.25 0.04 0.03 0.64 0.29  Total 59.1 10.6 3.11 37.03 21.25 871.39 112.08 36.81 146.1 152.9 27.12 2.97 1.08 4.42 4.88 Gato  Drilling 20.92 2.80 0.12 0.47 0.91 502.14 67.19 2.83 11.32 21.92 23.85 3.19 0.13 0.54 1.04  Cranes 11.85 4.60 0.05 0.21 1.32 23.70 9.21 0.11 0.42 2.65 0.71 0.28 0.00 0.01 0.08 

Flare 2.92 1.02 0.19 0.12 0.15 70.00 24.50 4.48 2.87 3.50 0.14 0.05 0.01 0.01 0.01 Vessels 6.44 0.15 0.69 2.37 2.01 154.53 3.58 16.63 56.84 48.21 7.34 0.17 0.79 2.70 2.29 

 Helicopter 18.48 2.66 2.40 59.16 27.82 18.48 2.66 2.40 59.16 27.82 0.39 0.06 0.05 1.24 0.58 

Total 60.61 11.23 3.45 62.33 32.21 768.85 107.14 26.45 130.61 104.1 24.70 3.52 0.14 0.56 1.13 
A5-89

Appendix for Chapter 5

Table 5.4-13. Estimated MODU peak hour emissions.

Table 5.4-14. Cumulative Scenario - emission factors and assumptions.

Estimated MODU Peak Hour Emissions 

Activity NOx CO VOC SO2 PM10

Site Preparation  Main Engines 32.09 4.29 0.18 0.72 1.40 

Small Tugboats 59.01 16.37 4.97 1.20 5.56 

 Large Tugboats 98.35 27.29 8.29 2.00 9.27 

Total 189.45 47.95 13.44 3.92 16.23 

Drilling Phase*  Main Engines 27.94 3.74 0.16 0.63 1.22  Cranes 11.85 4.60 0.05 0.21 1.32  Crew (idle) 1.12 0.53 0.71 0.03 0.14  Supply (idle) 2.24 1.06 1.43 0.06 0.28 

Total 43.15 9.93 2.35 0.93 2.96 

*Representative of typical project emissions

Cumulative Scenario - Emission Factors and Assumptions 

 Emission Factors 

Activity Platforms Pipeline 

(kms) 

Days Wells Trips NOx CO VOC SO2 PM10 Units Reference 

Platform Installation 

5 175.52 41.6 12.87 11.99 2.82 tons/platform Jacobs (C-1.3) 

Pipeline Installation 

 209.3 3.83 1.54 0.44 0.08 0.19 tons/km Jacobs (C-2.2) 

Power Cable Installation 

 177.1 249 1140 240 32 60 80 lbs/day SBCAPCD 

(SYU ATC 1991) 

Production Wells 

 181 3.56 1.69 0.49 0.53 0.52 tons/well Jacobs (C-3.3) 

Production 5 35.89 18.90 26.82 6.99 2.74 tons/platform

(avg.) 

SBCAPCD 

(1996 Inventory) 

Vessels 

Crew 1,402 516.70 54.80 24.79 7.10 31.68 lbs/1000 gals AP-42 (11-3-3) 

Supply 2,978 550.00 54.80 24.79 7.10 31.68 lbs/1000 gals AP-42 (11-3-3) 

Helicopters  LTO 4745 2.60 2.10 0.10 0.40 0.10 lbs/hr 

(5 min cycle) 

Jacobs (5-23) 

Cruise 4745 2.60 2.10 0.10 0.40 0.10 lbs/hr 

(1hr 20 min) 

Jacobs (5-23) 
A5-90

Delineation Drilling Activities Offshore Santa Barbara County Table 5.4-15. Cumulative Scenario - estimated emissions.

Table 5.4-16.Peak year cumulative emissions.

Peak Year Cumulative Emissions With Development of 36 Leases 

(2008) 

 Peak Hour (lbs/hr) Peak Year (tons) 

Activity NOx CO SOx VOC PM10 NOx CO SOx VOC PM10 

Platform Construct 113.54 26.92 7.76 8.33 8.37 497.3 117.9 34.0 36.5 36.7 Pipeline Install 148.26 59.54 3.11 17.03 14.70 649.4 260.8 13.6 74.6 64.4 Power Cable Install 20.11 4.25 1.07 0.57 1.42 88.1 18.6 4.7 2.5 6.2 Development Wells 4.89 2.31 0.73 0.66 0.71 21.4 10.1 3.2 2.9 3.1 Production 163.88 86.30 31.92 122.47 12.51 717.8 378.0 139.8 536.4 54.8 Spills 0 0 0 1.79 0 0 0 0 7.84 0 Service Vessels 1.39 0.14 0.02 0.06 0.08 6.07 0.61 0.08 0.28 0.35 Helicopters 0.50 1.18 0.10 0.09 0.11 2.18 5.16 0.44 0.38 0.49 

Total 452.57 180.64 44.71 151 37.9 1,982.25 791.17 195.82 661.4 166.04 

Cumulative Scenario - Estimated Emissions 

(tons per project life) 

Activity NOx CO VOC SO2 PM10Platform Installation 877.6 208.0 64.35 59.95 14.10 Pipeline Installation 801.27 322.18 92.05 16.74 39.75 Power Cable Installation 

141.93 29.88 3.98 7.47 9.96 

Production Wells 644.36 305.89 88.69 95.93 94.12 Production 4,199.13 2,211.30 3,137.94 817.83 320.58 Spills 0 0 7.84 0 0 Vessels 0 0 0 0 0 

Crew 27.38 2.90 1.31 0.38 1.68 

Supply 124.335 12.39 5.60 1.60 7.16 

Helicopters 0 0 0 0 0  LTO 12.85 10.38 0.49 1.98 0.49  Cruise 41.52 118.63 8.90 8.90 11.86 

Total 6,870.375 3,221.55 3,411.15 1,010.78 499.7 
A5-91

Appendix for Chapter 5

Table 5.4-18. Mud and Cuttings to Shore Alternative Estimated Emissions.

Table 5.4-17. Mud and Cuttings to Shore Alternative Emission Factors.

Muds and Cuttings to Shore Alternative - Emission Factors

 Emission Factors Unit Vessel 

Trips 

Vessel Mileage 

Truck Trips 

Truck Mileage 

Vessel Fuel Rate (gal/mi) 

NOx CO VOC SO2 PM10 Units Reference 

Bonito  1 well 12 204 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)  140 150 8.2 11.5 2.0 - - Gms/mile* AP-42 (II-3-3) 2 wells 12 204 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)  140 150 8.2 11.5 2.0 - - Gms/mile AP-42 (II-3-3)Purisima 35 240 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3)  410 150 8.2 11.5 2.0 - - Gms/mile AP-42 (II-3-3)Point Sal 35 240 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) 410 150 8.2 11.5 2.0 - - Gms/mile AP-42 (II-3-3)Gato 20 100 8.24 267 126.3 170.2 7.05 33.5 lbs/1000 gal AP-42 (II-3-3) 210 150 8.2 11.5 2.0 - - Gms/mile AP-42 (II-3-3)*assumes a 1995 model year tanker truck on 1/1/03 

 Muds and Cuttings to Shore Alternative - Estimated Emission Increases 

 Daily emissions Total Emissions Unit (lbs/day) (tons)  NOx CO VOC SO2 PM10 NOx CO VOC SO2 PM10Bonito  Truck 0.19 0.27 0.05 

Vessel 448.8 212.3 286.1 11.9 56.3 2.69 1.27 1.72 0.07 0.34 

 Total 2.88 1.54 1.76 0.07 0.34  2 wells 5.76 3.08 3.52 0.14 0.68 Purisima  Truck 0.56 0.78 0.14 

Vessel 528.0 249.8 336.6 13.9 66.2 9.24 4.37 5.89 0.24 1.16 

 Total 9.80 5.15 6.03 0.24 1.16 Point Sal  Truck 0.56 0.78 0.14 

Vessel 528.0 249.8 336.6 13.9 66.2 9.24 4.37 5.89 0.24 1.16 

 Total 9.80 5.15 6.03 0.24 1.16 Gato  Truck 0.28 0.40 0.07 

Vessel 220.0 104.1 140.2 5.8 27.6 2.20 1.04 1.40 0.06 0.28 

 Total 2.48 1.44 1.47 0.06 0.28 
A5-92

Delineation Drilling Activities Offshore Santa Barbara County