HomeMy WebLinkAboutMITIGATION (2)I ENVIRONMENTAL MANAGEMENT CONSULTANTS
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September 24, 2001
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Mr. Eric Roehl
Chevron Products Company
Post Office Box 2292
t45 South State College Boulevard
Brea, California 92822-2292
Subject:
WORK PLAN FOR PRELIMINARY SITE ASSESSMENT AT
CHEVRON PRODUCTS COMPANY SERVICE STATION #20-6561
3360 PANAMA LANE, BAKERSFIELD, CALIFORNIA
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Dear Mr. Roehl:
Holguin, Fahan & Associates, Inc. (HFA) is pleased to present Chevron Products Company
(Chevron) with this work plan to conduct a soil assessment at Chevron Service Station #20-6561,
located at 3360 Panama Lane, Bakersfield, California (see Figure 1 Site Location Map).
This work is being proposed in order to investigate the condition of soil due to the site's
proximity to potential groundwater receptors in the area.
PURPOSE AND SCOPE: The purpose of this work plan is to outline the methodology to be
followed during the investigation. The proposed scope of work for this project includes the
following major tasks:
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· develop a work plan and worker health and safety plan for the preliminary site
assessment at Chevron Service Station #20-6561;
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advance six direct-push sampling locations to an approximate maximum depth of
30 fbg;
*. analyze 18 soil samples for TPH as gasoline, BTEX, MTBE, TBA, DIPE, ETBE, and TAME; and
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prepare a Preliminary Site Assessment Report documenting the sampling activities,
sample results, data analysis, conclusions, and recommendations for any further action
that may be necessary.
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ENVIRONMENTAL; SCIENTISTS * GEOLOGISTS * ENGINEERS
Contaminated Site Assessments · Phase I Audits · Site Remediation * Hazardous Waste Management
143 South Figueroa Street 5940 Lakeshore Drive 2820 Pegasus Drive, Suite 1 1003 East Cooley Drive, Suite 201 1215 South park Lane, Suile 1
Ventura. California 93001 Cypress. California 90630 Bakersfield, California 93308 Coltom Califonxia 92324 Tempe. Arizona 85281
(805) 652-0219 (714) 236-1741 {805) 391-0517 (909) 422-8988 (480) 505-3332
(805) 652-0793 FAX: (714) 236-1745 FAX (805) 391-0826 FAX (909) 422-8099 FAX (480) 505-3336 FAX
www.hfa.cora
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I FAHAN &
ASSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
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Mr. Eric Roehl
Chevron Products Company
September 24, 2001 - Page 2
SITE DESCRIPTION: The site is located at 3360 Panama Lane in the city of Bakersfield,
Kern County, California (see Figure 1 - Site Location Map). The site is located at the
northwestern corner of the intersection of Panama Lane and Wible Road. The site is
located within a commercial district that flanks Panama Lane and Wible Road.
An Exxon-brand service station is located at the northeastern corner of the intersection of
Panama Lane and Wible Road. The site is located within the southeastern quarter of the
southeastern quarter of Section 23, Township 30 South, Range 27 East, MDBM. The fueling
facilities at the site consist of three 1 2,000-gallon, double-walled, fiberglass gasoline USTs
and four multiple product dispensers (MPDs) on four dispenser islands (see Figure 2 - Plot
Plan).
The property owner contact is Mr. Eric Roehl, Chevron Products Company,
Post Office Box 2292, Brea, California, 92822-2292, (714) 671-3447. The consultant contact is
Mr. Mark R. Magargee, Holguin, Fahan & Associates, Inc., 2820 Pegasus Drive, Suite 1,
Bakersfield, California, 93308, (661) 391-0517.
3. SITE MAPS: Site maps are included as Figures 1 and 2.
TOPOGRAPHY, GEOLOGY, AND HYDROGEOLOGY: The site is located at an elevation of
approximately 362 feet above MSL, and the topography slopes slightly to the
south-southwest (see Figure 1). The subject site is located on the eastern flank of the
San Joaquin Valley and west of the southern Sierra Nevada. The surface of the San Joaquin
Valley is composed primarily of unconsolidated Pleistocene (1.6 million to 11,000 years ago)
and Recent (11,000 years ago to the present) alluvial sediments. Beneath the alluvial
sediments are older, predominantly lake-bed deposits. These lie unconformably on
Mio-Pliocene marine sediments, which extend to a crystalline basement at a depth of
approximately 50,000 fbg (California Division of Mines and Geology (CDMG), 1965, Geologic
Map of California, Bakersfield Sheet).
At the subject site, surface deposits consist of Quaternary (recent) unconsolidated alluvium
overlying Quaternary (Pleistocene) nonmarine sediments. Geologic deposits in the study
area include Pleistocene alluvial sediments that form a homocline dipping gently to the
west-southwest. The deposits are alluvium consisting of indurated and dissected fan
deposits (CDMG, 1965). Surface soils are classified by the Soils Conservation Services as
Kimberlina - Urban Land - Cajon Complex and are characterized as 35 percent Kimberlina
fine, sandy loam with moderate permeability; 30 percent Urban land with impervious
surfaces and altered fills; and 20 percent Cajon loamy sand with high permeability.
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HOLGUIN,
F, IA &
ASSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
Mr. Eric Roehl
Chevron Products Company
September 24, 2001 - Page 3
The site is located in the southern portion of the Great Valley geomorphic province.
The Great Valley is a north-south-trending valley, approximately 400 miles long by
50miles wide, the southern portion of which is known as the San Joaquin Valley.
Surface water and groundwater in the San Joaquin Valley are derived predominantly from
the Sierra Nevada to the east and are transported by five major rivers, the closest to the site
being the Kern River. The subject site is located approximately 5 miles south of the
Kern River.
The depth to the regional, unconfined aquifer is approximately 165 fbg, and the
groundwater gradient is to the south-southwest, (Kern County Water Agency (KCWA), 1998,
1997 Report on Water Conditions, Improvement District No. 4, February 1, 1998).
Perched groundwater is known to be present flanking the current course of the Kern River,
but is not known to extend to the site (KCWA, 2001, 1997 Water Supply Report, August 2001 ).
The CWSC operates four municipal water supply wells within 2,500 feet of the subject
Chevron station. CWSC Well #23P01 is located approximately 1,250 feet to the west;
CWSC Well #24M01 is located approximately 1,500 feet east; CWSC Well #23101 is located
approximately 2,000 feet northwest; and CWSC Well #23N01 is located approximately
2,500 feet east of the site (see Figure 1 for the water supply well locations).
TANK HISTORY: In 1997, the service station was constructed on the site on previously
fallowed agricultural land. Fueling facilities include three 12,000-gallon, double-walled,
fiberglass gasoline USTs; four MPDs with secondary containment on four dispenser islands;
and double-walled product piping (see Figure 2].
6. IDENTIFICATION AND ESTIMATED QUANTITY OF MATERIAL RELEASED: None currently known.
PREVIOUS WORK: The service station was constructed in 1997 on previously fallowed land,
and no subsurface investigations have been performed at the site subsequent to service
station construction.
STRATEGY AND PROCEDURES FOR ASSESSING THE POTENTIAL FOR GASOLINE-CONTAINING
SOIL AND GROUNDWATER: The intent of this work plan is to evaluate the subsurface
conditions at the site. HFA proposes to accomplish this by advancing six direct-push
sampling locations (B-1 through B-6) to a depth of approximately 30 fbg and analyzing 18 soil
samples for TPH as gasoline, BTEX, MTBE, TBA, DIPE, ETBE, and TAME (see Figure 2 for the
proposed direct-push sampling locations).
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HOLGUIN,
FAI-IAN &
,~..SSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
Mr. Eric Roehl
Chevron Products Company
September 24, 2001 - Page 4
DESCRIPTION OF WORK TO BE PERFORMED: Prior to any intrusive methods being conducted,
Underground Service Alert of Northern California will be utilized to map out the underground
structures. Based on the clearances obtained, HFA will site the direct-push sampling in safe
locations.
A total of six direct-push sampling locations will be advanced during this preliminary site
characterization. The soil sampling locations will be advanced using HFA's 20-ton
direct-push sampling rig to an approximate maximum depth of 30 fbg.
Direct-push sampling locations B-l, B-2, and B-3 will be positioned to the north, west, and
east, respectiveiy, of the UST cluster, and direct-push sampling locations B-4, B-5, and B-6
will be positioned to the west, east, and south, respectively, of the dispenser islands
(see Figure 2).
During the drilling process each soil sample will be field-screened for VC)Cs using a PID
calibrated to 100 ppmv isobutylene, and observations will be made for the visual
identification of'any soil staining or discoloration. Soils will be classified according to the
Unified Soil Classification System by an experienced environmental geologist under the
direct supervision of a state of California registered geologist, and all data will be recorded
on logs of exploratory borings. Soil samples will be wrapped in Teflon®, followed by
close-fitting plastic caps, and held at a temperature of 4°C while in the field and in transit to
the laboratory. Soil sampling equipment will be decontaminated between sampling
attempts using a non-phosphate, soap and water wash; a tap-water rinse; and a distilled,
deionized water rinse. Selected soil samples will be analyzed forTPH as gasoline using
EPA Method 8015 (M) and BTEX, MTBE, TBA, DIPE, ETBE, and TAME using EPA Method 8260B
(see Attachment 1 for the direct-push sampling procedures).
Upon completion of the drilling and sampling activities and receipt of the laboratory report,
HFA will provide a Preliminary Site Assessment Report that details the field activities, sample
collection, analytical results, data analysis, conclusions, and HFA's recommendation for
further assessment or remedial activities, if required. Certified laboratory reports and
chain-of-custody documents will be included.
10.
EQUIPMENT DECONTAMINATION PROCEDURES: Sampling equipment will be
decontaminated using a non-phosphate, soap and water wash; a tap water rinse; and a
distilled, deionized water rinse. The direct-push rods will be decontaminated in a similar.:
manner between sampling locations.
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HoI,~m~,
FAa,~ &
ASSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
Mr. Eric Roehl
Chevron Products Company
September 24, 2001 - Page 5
11. WASTE DISPOSAL PROCEDURES: Because the site investigation activities are being
performed using direct-push sampling techniques, drilling waste is not generated.
12. EMERGENCY OR INTERIM CLEANUP: Not applicable.
13.
WORK SCHEDULE: Work will begin within 45 days subsequent to the acceptance of this work
plan by the Bakersfield Fire Department, Environmental Services Division (BFDESD).
The BFDESD will be notified at least 48 hours before any on-site work commences.
A Preliminary Site Assessment Report will be submitted to the BFDESD approximately
45 days after commencement of the work.
14.
SITE SAFETY PLAN: A worker health and safety plan developed by HFA's industrial hygienist
for UST site investigations outlines the procedures for conducting all on-site work.
Site-specific information is provided on the cover page of the worker health and safety plan
(see Attachment 2 for the worker health and safety plan).
All work will be conducted in accordance with all regulatory requirements as defined by the
State Water Resources Control Board's LUFT Field Manual and the BFDESD guidance
documents.
Holguin, Fahan & Associates, Inc., trusts that you will find this work plan to your satisfaction, if you
have any questions or require additional information, please contact Mr. Mark Magargee at
(661) 391-051 7 or at e-mail address Mark_Magargee@hfa.com.
Respectfully submitted,
Mark R. Magargee, CHG, RG
Senior Hydrogeologist
Holguin, Fahan & Associates, inc.
MRM:rri
Enclosures:
No, l
Figure 1 - Site Location Map
Figure 2 - Plot Plan
Attachment 1 - Direct-Push Sampling Procedures
Attachment 2 - Worker Health and Safety Plan
cc: Mr. Howard Hi Wines, III, BFDESD
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HOLGUIN,
F.u-lm~ &
ASSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
Mr. Eric Roehl
Chevron Products Company
September 24, 2001 - Page 6
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HOLGUIN,
F,~ &
ASSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
Mr. Eric Roehl
Chevron Products Company
September 24, 2001 - Page 7
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SIDEWALK
r--SIGN-~
t
B-4
B-2
B-1
12,000-GALLON
PLUS
UNLEADED
GASOLINE UST
12,000-GALLON
SUPREME
UNLEADED
GASOLINE UST
B-3
D~ER.~LAND~
B-6
0
_J
SCALE IN FEET
0 20 40
LEGEND
PROPOSED DIRECT-PUSH SAMPLING LOCATION
REVISION DATE: SF-t.'I EMBER 17, 2001: RRI
CHEVRON PRODUCTS COMPANY
SERVICE STATION #20-6561
3360 PANAMA LANE
BAKERSFIELD, CALIFORNIA
FIGURE 2 - PLOT PLAN
HOLGUIN, FAHAN & ASSOCIATES, INC.
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HOLGUIN,
FtHAi~ &
ASSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
ATTACHMENT 1.
DIRECT-PUSH SAMPLING PROCEDURES
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DIRECT-PUSH SAMPLING PROCEDURES
SITING
Direct-push sampling will be conducted as noted in the work plan.
TRUCK-MOUNTED DRILLING AND SOIL SAMPLING PROCEDURES
Each sampling location will be manually drilled for the first 4 feet in order to establish that the
area is clear of subsurface structures. Direct-push sampling will be conducted with
Holguin, Fahan & Associates, Inc.'s (HFA's) 10-ton hydraulic-push rig to the depths noted in the
work plan. During the drilling process, lithology data will be recorded on a log of soil sample
descriptions by an experienced environmental geologist under the direct supervision of a state
of California registered geologist. Soil samples will be collected with a modified California
split-spoon sampler at intervals consistent with the work plan, unless a change in lithology is
noted, in which case an additional sample will be collected. The sampler will be outfitted with
1.5-inch by 3-inch stainless steel or brass sleeves. When the sample is withdrawn, the ends of
the sleeve will be covered with aluminum foil or TeflonTM tape followed by plastic caps.
Sample preservation, handling, and transportation procedures will be consistent with HFA's
QA/QC procedures.
soIL CLASSIFICATION PROCEDURES
Soil in each direct-push sampling location will be continuously classified according to the
Unified Soil Classification System (USCS) and logged by an experienced environmental
geologist under the direct supervision of a state of California registered geologist.
Specific geologic and hydrologic information that will be obtained during direct-push sampling
include the following:
· stratigraphic characteristics: thickness, correlation of units, extent (horizontal and vertical)
of aquifers and confining units, if any;
· observed porosity;
· volatile organic content;
· particle-size distribution;
· moisture content;
· plasticity;
· strength;
· mineral composition;
· depth to groundwater;
· soil type, structure, and size; and
· distribution of soil type.
The data will be recorded on individual logs of soil sample descriptions, including observations
regarding the types and quantities of waste materials encountered and any PID readings.
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Direct-Push Sampling Procedures
Page 2
This data is recorded on a standardized log sheet in the field log book.
The specific information that will be recorded is listed in Table 1, below.
TABLE 1.
LOG OF SOIL SAMPLE DESCRIPTION INFORMATION
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GENERAL
Project name
Direct-push sampling
location name/number
Date started and finished
Geologist"s name
Driller"s name
· Direct-push sampling location;
map and elevation
· Rig type (bit size/auger size)
· Petrologic lithologic classification
scheme used (Wentworth, USCS)
· Sheet number
INFORMATION COLUMNS
Depth * Gradation
Sample location/number * Narrative description ,
PID or FID reading * Soil classification
NARRATIVE DESCRIPTION
Geologic Observations
- Soil/rock type
- Color and stain
- Gross petrology
- Friability
- Degree of weathering
- Particle shape
- Particle size
- Depositional structures
- Bedding
- Fossils
- Moisture content
- Formational strike and dip
- Organic content
- Odor
- Suspected contaminant
- Discontinuities
- Water-bearing zones
Drilling Observations
- Changes in drilling method
- Readings from detection
equipment (if any)
- Drilling difficulties
- Advance rates or equipment rig
chatter
- Caving/hole stability
- Amounts and types of
any liquids used
- Water levels
Other Remarks
- Equipment failures
- Possible contamination
- Deviations from drilling plan
- Weather
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All field logs will be typed and presented verbatim in an appendix of the preliminary soils
assessment report. The typed logs of soil sample descriptions will be on a form identical to that
used in the field log book. Each log of soil sample descriptions includes a graphic log in which a
symbol for each USCS soil group is included for each soil interval.
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Direct-Push Sampling Procedures
Page 3
DATA REDUCTION
The data compiled from the sampling locations will be summarized and analyzed. A narrative
summary of the soil characteristics will also be presented. The logs of soil sample descriptions
are checked for the following information:
· correlation of stratigraphic units among sampling locations;
· identification of zones of potentially high hydraulic conductivity;
· identification of the confining formation/layer;
· indication of unusual/unpredicted geologic features (fault zones, fracture traces, facies
changes, solution channels, buried stream deposits, cross-cutting structures, pincho,ut
zones, etc.); and
· continuity of petrographic features such as sorting, grain-size distribution, cementation, etc.
Direct-push sampling locations will be plotted on a properly scaled map. The purpose of each
soil sample is indicated on the map. Depending on the results of this analysis, the soil
stratigraphy of the site will be presented in a scaled stratigraphic column (if soil stratigraphy is
laterally homogeneous) or, more likely, a scaled cross section or a fence diagram (if soil is
laterally heterogeneous).
Specific features that may impact contaminant migration, e.g., fault zones or impermeable
layers, will be discussed in narrative form and supplemented with graphical presentations as
deemed appropriate.
DECONTAMINATION PROCEDURES
Prior to each sampling episode, the sampling equipment will be decontaminated using a
non-phosphate soap and water wash, a tap water rinse, and two deionized water rinses.
The drill string will be decontaminated with a steam cleaner between each sampling location.
SAMPLING LOCATION ABANDONMENT
The sampling locations will be abandoned with a
delivered by a grout pump through a tremie pipe.
5-percent
bentonite neat cement grout
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HOLGUIN,
FAma. N &
ASSOCIATES, INC.
ENVIRONMENTAL MANAGEMENT CONSULTANTS
ATTACHMENT 2.
WORKER HEALTH AND SAFETY PLAN
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WORKER HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK INVESTIGATIONS
SITE-SPECIFIC INFORMATION
Site Address:
Name of Business Occupying Site:
Owner Contact: Mr. Eric Roehl
3360 Panama Lane, Bakersfield, California
Chevron Products Company
Owner Tel. fl': (714) 671-3447
BFDESD Contact:
Mr. Howard H. Wines, III
Tel. fl.: (661) 326-3979
FIELD ACTIVITIES AND GOALS OF THIS INVESTIGATION: Advance six direct-push sampling
locations to a depth of 30 fbg to assess the potential for gasoline hydrocarbons in soil.
KNOWN HAZARDS AT THE SITE INCLUDE:
Gasoline hydrocarbons
KEY PERSONNEL AND RESPONSIBILITIES:
NAME RESPONSIBILITIES
James Anderson
SITE SAFETY OFFICER- Primarily responsible for site safety,
(661) 391-0517
response operations, and protection of the public. Responsible
for work site inspections to identify particular hazards and define
site security.
Mark R. Magargee, CHG, RG
(661) 391-0517
PROJECT MANAGER Primarily responsible for site
characterization. The project manager delineates authority,
coordinates activities and functions, and directs activities
related to mitigative efforts of cleanup contractors.
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James Anderson
(661) 391-0517
SITE INVESTIGATIVE PERSONNEL- Responsible for actual field
work including sampling, monitoring, equipment use, and other
related tasks as defined by the project manager.
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ANTICIPATED WEATHER CONDITIONS FOR THIS AREA DURING THE PROJECT'S DURATION WILL BE:
Temp. range: 70-90°F Humidity: 30-60% Ambient temp.: 80°F
Potential for heat stress: High: Medium: X Low:
ANTICIPATED PROTECTION LEVEL DURING THIS PROJECT*
Level "D" *Will be upgraded or downgraded to fit situations as they arise.
EMERGENCY INFORMATION:
All emergency calls: 911
Closest hospital with emergency room: Mercy Hospital
2215 Truxtun Avenue, Bakersfield, California, (661) 632-5000
Map Showing Route from Site to Hospital Attached?
Yes:
X
No:
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WORKER HEALTH AND SAFETY PLAN FOR UNDERGROUND STORAGE TANK SITE INVESTIGATIONS
This document outlines Holguin, Fahan & Associates, Inc.'s (HFA's) worker health and safety
plan for its employees to be used at City of Bakersfield UST site investigations.
Site-specific information is provided on the cover page of this document.
This worker health and safety plan was developed by HFA's industrial hygienist through
consultation of the following documents:
· Occupational Safety and Health Administration (OSHA) 29 CFR 1910 - "Hazardous Waste
Operations and Emergency Response, Final Ruling," March 1989;
· NIOSH/OSHA/USCG/EPA "Occupational Safety and Health Guidance Manual for
Hazardous Waste Site Activities," October 1985; and
· HFA's Corporate Health and Safety Program.
This worker health and safety plan is divided into the following categories:
1. Job Hazard Assessment;
2. Exposure Monitoring Plan;
3. Personal Protective Equipment;
4. Work Zones and Security Measures;
5. Decontamination and Disposal;
6. Employee Training; and
7. Emergency Procedures.
1. JOB HAZARD ASSESSMENT
Immediate tasks at any leaking UST site include an evaluation of any present or potential threat
to public safety. Questions need to be answered regarding the dangers of significant vapor
exposures and potential explosion hazards.
Potential Chemical Hazards
The chemical components of gasoline that are the most dangerous to site workers are the
volatile aromatics, benzene, toluene, ethylbenzene, xylene, and potentially, organic lead
(see Appendix 1 for the Material Safety Data Sheet). Additionally, solvents such as
1,2-dichlorobenzene and 1,2-dichloroethane may also be used as cleaning solutions at service
stations. The primary health risks associated with each of these chemicals are described
below.
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Worker Health and Safety Plan
Page 2
Gasoline - Suspected human carcinogen. A TLV of 300 ppm or 900 mg/m3 has been assigned
to gasoline. This value of 300 ppm was assigned based on an average of 3 percent benzene
(10 ppm TLV) in gasoline. Low-level inhalation exposure to gasoline can cause irritation to the
eyes, nose, and respiratory system; headache; and nausea.
Benzene - Suspected human carcinogen. A TLV of 10 ppm or 30 mg/m3 has been assigned to
benzene. Benzene has a Iow odor threshold limit of 1.4 ppm. Low-level inhalation exposure to
benzene can cause 'irritation to the eyes, nose, and respiratory system; headache, and
nausea,
Toluene - A TLV OF 100 ppm or 375 mg/m3 has been assigned to toluene. Toluene has a Iow
odor threshold limit of 2.1 ppm. Low-level inhalation exposure to toluene can cause fatigue,
weakness, confusion, and euphoria.
Ethylbenzene - A TLV of 100 ppm or 435 mg/m3 has been assigned to ethylbenzene.
Ethylbenzene has a Iow odor threshold limit of 2 ppm. Low-level inhalation exposure to
ethylbenzene can cause irritation to the eyes and mucous membranes.
Xylene - A TLV or 100 ppm or 435 mg/m3 has been assigned to xylene.
limit has been established for xylene. Low-level inhalation exposure
dizziness, excitement, and drowsiness.
No Iow odor threshold
to xylene can cause
1,2-Dichlerobenzene A TLV of 50 ppm or 306 mg/m3 has been assigned to
1,2-dichlorobenzene. 1,2-dichlorobenzene has a Iow odor threshold limit of 4.0 ppm.
Acute vapor exposure can cause coughing, dizziness, and drowsiness. It may cause skin
irritation.
1,2-Dichloroethane- A TLV of 203 ppm. No data is available concerning odor threshold.
Acute vapor exposure can cause coughing, dizziness, drowsiness, and skin irritation.
Tetraethyl Lead - A TLV of 0.1 mg/m3 has been assigned to tetraethyl lead. Tetraethyl lead is a
colorless or red-dyed liquid at atmospheric conditions. No data is available concerning odor
threshold. Acute vapor exposure can cause insomnia, delirium, coma, and skin irritation.
Potential Physical Hazards
Trenchin.q - Dangerously high fuel vapor levels will be monitored using an LEL meter.
The presence of underground utilities are also of concern, and Underground Service Alert will
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Worker Health and Safety Plan
Page 3
be notified in advance of any trenching work for identification of all underground utilities in the
immediate area.
Drillin,q - Dangerously high fuel vapor levels will be monitored using an LEL meter. The presence
of underground utilities are also of concern, and Underground Service Alert will be notified in
advance of any drilling work for identification of all underground utilities in the immediate area.
Samplin.q - Use of personal protective equipment will minimize the potential for exposure of
personnel conducting site investigation activities.
Heat stress will be monitored by each individual and controlled through regular work breaks as
outlined in the American Conference of Governmental Industrial Hygienists' TLV's for heat stress
conditions.
2. EXPOSURE MONITORING PLAN
Potential exposure hazards found at UST
leaking USTs.
sites primarily
include toxic airborne vapors from
The most dangerous airborne vapor likely to be encountered during a UST investigation is
benzene. Gasoline vapor concentration levels will be monitored in the breathing zone with a
PID calibrated to benzene. When the action level of 150 ppm (one half the TLV of gasoline)is
detected in the breathing zone, respiratory protection will be required utilizing full-face or
half-face respirators with organic vapor cartridges.
Monitoring for combustible gases will also be performed using an LEL meter when vapor
concentrations above 2,000 ppm are detected with the PID. The action level is 35 percent of
the LEL for gasoline vapors or 4,500 ppm. If this level is attained or exceeded, the work party will
be IMMEDIATELY withdrawn.
3. PERSONAL PROTECTIVE EQUIPMENT
The level of protection during the site investigation will usually be level "D." Level "D" protective
equipment includes coveralls, safety boots, safety glasses, gloves, and hard hats if drilling or
trenching operations are in progress.
Upgrading the protection level would be based on airborne benzene concentration levels
equal to or exceeding the action level. An upgrade to level "C" protection would be required if
the action level is equaled or exceeded. Additional equipment required for level "C" would be
a full-face or half-face air purifying canister-equipped respirator and TyvekTM suits with taped
arm and leg seals.
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Worker Health and Safety Plan
Page 4
If the action level is met or exceeded (35 percent) for the LEL, work will cease until the vapor
level is measured to be below 20 percent of the LEL.
A fire extinguisher will be maintained on site. Decisions for workers' safety are based on a
continual evaluation of existing or changing conditions.
4. WORK ZONES AND SECURITY MEASURES
To facilitate a minimum exposure to dangerous toxic vapors and/or physical hazards, only
authorized persons will be allowed on the job site. Work zones will be defined by HFA staff who
will also be responsible for maintaining security within these zones. Only the minimum number of
personnel necessary for the UST investigation will be present in the work zone.
5. DECONTAMINATION AND DISPOSAL
HFA's standard operating procedures establish practices that minimize contact with potentially
contaminated materials. Decontamination procedures are utilized if there is suspected or
known contamination of equipment, supplies, instruments or any personnel surfaces.
Soap and water will be utilized to remove contaminants from personnel surfaces as well as
equipment and instruments. Contaminated wash water will be disposed of in accordance with
procedures outlined in the City of Bakersfield Fire Department LUFT guidance document.
6. EMPLOYEE TRAINING
All HFA employees working on the site will have had, at a minimum, the required 40-hour OSHA
Training for Hazardous Waste Site Activities (29 CFR 1910, 120), which includes training in the use
of personal protective equipment. Individualized respirator fit testing is required of all HFA
employees working at the site
7. EMERGENCY PROCEDURES
HFA employees are trained in emergency first aid, and emergency first aid provisions will be
brought to the site. In the event of overt personnel exposure (i.e., skin contact, inhalation, or
ingestion), the victim will be transported to and treated at the closest hospital
(see Hospital Map).
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Worker Health and Safety Plan
Page 5
SAN FRANCISCO
LOS ANGELES
r
__ O
~ TRUXTUN AVENUE
~O ~ MERCY HOSPITAL
~ 2215 TRUXTUN AVENUE
BAKERSFIELD, CALIFONIA
~ (661) 632-5000
LOCAT~,,,~aaj ~ PANAMA LANE
SAN DIEGO
CHEVRON PRODUCTS COMPANY
SERVICE STATION #20-6561
3360 PANAMA LANE
BAKERSFIELD, CALIFORNIA
HOSPITAL MAP
HOLGUIN, FAHAN & ASSOCIATES, INC.
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APPENDIX 1.
MATERIAL SAFETY DATA SHEET
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Material Safety Data Sheet
Page
! o! 25
Chevron
CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
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CHEVRON I4ID-GRADE UNLEADED GASOLINE
PRODUCT NUMBER(S): CPS201001 CPS201003 CPS201004 CPS201006
CPS201007 CPS201008 CPS201010 CPS201011
CPS201018 CPS201021 CPS20103t CPS201032
CPS201033 CPS201034 CPS201036 CPS201037
CPS201038 CPS201041 CPS201043 CPS201046
CPS201048 CPS201064 CPS201208 CPS201210
CPS201211 CPS201212 CPS201230 CPS201231
CPS201232 CPS201260 CPS201261 CPS201262
CPS201271 CPS201272 CPS201273 CPS201280
CPS201281 CPS201282 CPS201288 CPS201290
CPS201291 CPS201292
SYNONYM: Calco Mid-Grade Unleaded Gasoline
CHBVRON Plus Unleaded Gasoline
COIqPANY IDENTIFICATION
EMERGENCY TELEPHONE NUMBERS
Chevron Products Company
575 Market St.
San Francisco, CA 94105-2856
HEALTH (24 hr): (800)231-0623 or
(510)231-0623 (International)
TRANSPORTATION (24 hr): CHEMTREC
(800)424-9300 or (703)527-3887
Emergency Information Centers
are located in U.S.A.
Int'l collect calls accepted
PRODUCT INFORMATION: MSDS Requests (800) 689-3998
(Sl0) 242-5357 Technical Information
SPECIAL NOTES: This MSDS applies to: Federal Reformulated Gasoline,
California Reformulated Gasoline, wintertime oxygenated Gasoline,
Low RVP Gasoline and Conventional Gasoline.
2. COMPOSITION/INFORMATION ON INGREDIENTS
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100.0 % CHEVRON MID-GRADE UNLEADED GASOLINE
Revision Number: 20
Revision Date: 07/31/99
MSDS Number: 003205
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CHEVRON MID-GRADE UNLEADED GASOhlNE
CONTA I N I NG
COMPONENTS AMOUNT
LIMIT/~TY
GASOLINE (GENERIC)
100.00%
890 mg/m3
1480 mg/m3
2000 mg/m3
POTENTIALLY
INCLUDING
BENZENE
Chemical Name: BENZENE
CAS71432
4.90%
0.5 ppm
2.5 ppm
1 ppm
5 ppm
10 LBS
ETHYL BENZEN~
Chemical Name: BENZENE,
CAS100414
ETHYL-
100 ppm
125 ppm
100 ppm
1,000 LBS
XYLENE
Chemical Name: BENZENE, DIMETHYL-
CAS1330207
100 ppm
150 ppm
100 ppm
100 LBS
TOLUENE
Chemical Name: TOLUENE
CAS108883
50 ppm
200 ppm
300 ppm
1,000 LBS
N-BUTANE
Chemical Name: N-BUTANE
CAS106978
800 ppm
N-HEPTANE
Chemical Name: N-HEPTANE
CAS142825
400 ppm
500 ppm
500 ppm
N-HEXANE
Chemical Name: N-HEXAN~
~_A~110543
Revisioa Number: 20
50 ppm
Revision Data: 07/31/99
Page 2 of 15
AGENCY/TYPE
ACGIH TWA
ACGIH STEL
OSHA PEL
ACGIH TWA
ACGIH STEL
OSHA PEL
OSHA CEILING
CERCLA 302.4 RQ
ACGIH TWA
ACGIH STEL
OSHA PEL
CERCLA 302.4 RQ
ACGIH TWA
ACGIH STSL
OSHA PEL
CERCLA 302.4 RQ
ACGIH TWA
OSHA PEL
OSHA CEILING
CERCLA 302.4 RQ
ACGIH TWA
ACGIN TWA
ACGIH STEL
OSHA PEL
....... 6CG~H TWA
MSDS Number: 003205
X-DgS~]21 (01-89)
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CHEVRON MID-GRADE UNLEADED GASOLINE
500 ppm
5,000 5BS
HEXANE I SOHI~RS (OTHER THAN N)
HEXANES
500 ppm
1000 ppm
PENTANE (ALL ISOMERS)
PENTANES
600 ppm
750 ppm
1000 ppm
cYcnom~x~m
Chemical Name: CYCLONEXANE
CASl10827
300 ppm
300 ppm
1,000 LBS
METHYLCYCLOHEXANE
Chemical Name: CYCLOHEXAN~, METHYL
CAS108872
¢00 ppm
500 ppm
TRIMETHYLBENZKNE
Chemical Name: BENZENE, TRIMETHYL-
CAS25551137
25 ppm
2,2,4-TRIMETHYLPF.~NTANE
Chemical Name: 2,2,4-TRIMETHYLPF~NTANE
CAS540841
1,000 LBS
CAN CONTAIN
METHYL TERT BUTYL STHER (MTBE)
Chemical Name: 2-METHOKY-2-MMTHYL PROPANE
CAS1634044 < 15.00% 40 ppm
50 ppm
1,000 LBS
ETHYL TKRT BUTYL ETHER (ETBE)
Chemical Name: 2-ETHOXY-2-METHYL PROPANE
CAS637923 < 18.00%
NON~
TERT-AMYL METHYL ETHER (TAME)
Chemical Name: 2-MMTHOXY-2-METHYL-BUTAN~
CAS994058 < 17.00%
50 ppm
OR
ETHANOL
Chemical Name: ETHYL ALCOHOL
CAS64175 < 10.00%
1000 ppm
]NNN
Revision Nu,~ber: 20
Revision Date: 07/31/99
Page 3 o£ 15
OSHA PEL
CERCLA 302.4 RQ
ACGIH TWA
ACGIH STEL
ACGIH TWA
ACGIH STEL
OSHA PEL
ACGIH TWA
OSHA PEL
CERCLA 302.4 RQ
ACGIH TWA
OSHA PEL
ACGIH TWA
CERCLA 302.4 RQ
ACGIH TWA
Chevron STEL
CERCLA 302.4 RQ
NA
Chevron STEL
ACGIH TWA
~HA PET., ,
NSDS Number: 003205
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CHEVRON MID-GRADE UNLEADKD GASOLINE Page 4 of 15
COMPOSITION CO]4NEN~:
Refer to the OSHA Benzene Standard (29 CFR 1910.1028) and Table Z-2 for
detailed training, exposure monitoring, respiratory protection and medical
surveillance requirements before using this product.
Motor gasoline is considered a mixture by EPA under the Toxic Substances
Control Act (TSCA). The refinery streams used to blend motor gasoline are
all on the TSCA Chemical Substances Inventory. The appropriate CAS number
for refinery blended motor gasoline is 86290-81-5. The product
specifications of motor gasoline sold in your area will depend on
applicable Federal and State regulations. Ethyl Alcohol is only added in
limited specific distribution areas.
HAZARDS IDENTIFICATION
************************* KNERGENC¥ OVERVIEW *************************
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Colorless to yellow liquid
- EXTRENELY FLANNABLE
- HARNFUL OR FATAL IF SWALLOWED - CAN ENTER LUNGS
AND CAUSE DANAGE
- VAPOR HAI~UL
- NAY CAUSE EYE AND SKIN IRRITATION
- LONG-TERN EXPOSURE TO VAPOR HAS C&USED CANCER IN
LABORATORY ANINALS
- KEEP OUT OF REACH OF CHILDREN
I~I~EDIATE HEALTH EFFEC?S
EYE:
Contact with the eyes causes irritation. Eye contact with the vapors,
fumes, or spray mist from this substance could also cause similar signs
and symptoms.
SKIN:
Contact with the skin causes irritation. Not expected to be harmful to
internal organs if absorbed through the skin. Prolonged or frequently
repeated contact may cause the skin to become cracked or dry from the
deferring action of this material.
INGESTION:
Because of the low viscosity of this substance, it can directly enter the
lungs if it is swallowed (this is called aspiration). This can occur
during the act of swallowing or when vomiting the substance. Once in the
lungs, the substance is very difficult to remove and can cause severe
injury to the lungs and death.
INHALATION:
May be harmful if inhaled. Breathing the vapors at concentrations above
the recommended exposure standard can cause central nervous system
effects. The vapor or fumes from this material may cause respiratory
~{+=+~Nn .....
Revision Number: 20
Revision Date: 07/31/99
NSDS Number: 003205
X-OOSQ'21 (0~-~)
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CHEVRON MID-GRADE UNLEADED GASOLIN~ Page 5 of 15
SIGNS AND SYMPTOMS OF EXPOSURE:
Eye damage or irritation: may include pain, tearing, reddening, swelling,
and impaired vision. Skin injury: may include pain, discoloration,
swelling, and blistering. Respiratory irritation: may include coughing
and difficulty breathing. Central nervous system effects may include
headache, dizziness, nausea, vomiting, weakness, loss of coordination,
blurred vision, drowsiness, confusion, or disorientation. At extreme
exposures, central nervous system effects may include respiratory
depression, tremors or convulsions, loss of consciousness, coma or death.
CARCINOGENICITY:
Risk depends on duration and level of exposure. See Section ll for
additional information. Gasoline has been classified as a Group 2B
carcinogen (possibly carcinogenic to humans) by the International Agency
for Research on Cancer (IARC). Contains chemical(s) known to the State of
California to cause cancer. Contains benzene, which has been classified
as a carcinogen by the National Toxicology Program (NTP), and a Group 1
carcinogen (carcinogenic to humans) by the International Agency for
Research on Cancer (IARC).
Whole gasoline exhaust was reviewed by the International Agency for
Research on Cancer (IARC) in their Monograph Volume 46 (1989). Evidence
for causing cancer was considered inadequate in animals and inadequate in
humans. IARC placed whole gasoline exhaust in Category 2B, considering it
possibly carcinogenic to humans.
4. FIRST AID MEASURES
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EYE:
Flush eyes with water immediately while holding the eyelids open. Remove
contact lenses, if worn, after initial flushing, and continue flushing for
at least 15 minutes. Get medical attention if irritation persists.
SKIN:
Wash skin immediately with soap' and water and remove contaminated clothing
and shoes. Get medical attention if irritation persists. Discard
contaminated clothing and shoes or thoroughly clean before reuse.
INGESTION:
If swallowed, give water or milk to drink and telephone for medical
advice. DO NOT make person vomit unless directed to do so by medical
personnel. If medical advice cannot be obtained, then take the person and
product container to the nearest medical emergency treatment center or
hospital.
INHALATION:
Move the exposed person to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical
attention if breathing difficulties continue.
NOTE TO PHYSICIANS:
Ingestion of this product or subsequent vomiting can result in aspiration
of light hydrocarbon liquid which can cause pneumonitis.
Revision Number: 20
Revision Date: 07/31/99
MSDS Number: 003205
X-DOS021 (01-89)
CHEVRON NID-GRADE UNLEADED GASOLINE Paqe 6 of 15
5. FIRE FIGHTING MEASURES
'FIRE CLASSIFICATION:
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OSHA Classification (29 CFR 1910.1200): Flammable liquid. See section 7
for appropriate handling and storage conditions.
FLAMMABLE PROPERTIES:
FLASH POINT: (TCC) < -49F (<-45C)
AUTOIGNITION: NDA
FLAMMABILITY LIMITS (% by volume in air): Lower: 1.4 Upper: 7.6
EXTINGUISHING MEDIA:
Dry chemical, CO2, AFFF Foam or alcohol resistant
foam if >15% volume polar solvents (oxygenates).
NFPARATINGS: Health 1; Flammability 3; Reactivity O.
FIRE FIGHTING INSTRUCTIONS:
U~e water spray to cool fire-exposed containers and to protect personnel.
For f{res involving this material, do not enter any enclosed or confined
fire space without proper protective equipment, including self-contained
breathing apparatus.
COMBUSTION PRODUCTS:
Normal combustion forms, carbon dioxide and water vapor; incomplete
combustion can produce carbon monoxide.
6. ACCIDENTAL RELEASE MEASURES
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CHEMTREC EMERGENCY NUMBER (2& hr): {800)42&-9300 or (703)527-3887
International ColleCt Calls Accepted
ACCIDENTAL RELEASE HEASURES:
Eliminate all sources of ignition in the vicinity of the spill or released
vapor.
Stop the source of the leak or release, clean up releases as soon as
possible, observing precautions in Exposur6 Controls/Personal Protection.
Contain liquid to prevent further contamination of soil, surface water or
groundwater. Clean up small spills using appropriate techniques such as
sorbent materials or pumping. Where feasible and appropriate, remove
contaminated soil. Follow prescribed procedures for reporting and
responding to larger releases. Place contaminated materials in disposable
containers and dispose of in a manner consistent with applicable
regulations. Contact local environmental or health authorities for
approved disposal of this material.
Release of this product should be prevented from contaminating soil and
water and from entering drainage and sewer systems. U.S.A. regulations
require reporting spills of this material that could reach any surface
waters. The toll free number for the U.S. Coast Guard National Response
Center is (800) 424-8§02.
Revision Number: 20
Revision Date: 07/31/99
MSDS Number: 003205
×-00S021 (01-89)
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~ON MID'GRADE UNLEADED GASOLINE Page
7 of ~5
7. HANDLING AND STORAGE
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This product presents an extreme fire hazard. Liquid very quickly
evaporates, even at iow temperatures, and forms vapor (fumes) which can
catch fire and burn with explosive violence. Invisible vapor spreads
easily and can be set on fire by many sources such as pilot lights,
welding equipment, and electrical motors and switches.
Blectrostatic charge may accumulate and create a hazardous condition when
handling this material. To minimize this hazard, bonding and grounding may
be necessary but may not, by themselves, be sufficient. Review all
operations which have the potential of generating an accumulation of
electrostatic charge and/or a flammable atmosphere (including tank and
container filling, splash filling, tank cleaning, sampling, gauging,
switch loading, filtering, mixing, agitation, and vacuu~ truck operations)
and use appropriate mitigating procedures. For more information, refer to
OSHA Standard 29 CFR 1910.106, "Flammable and Combustible Liquids",
National Fire Protection Association (NFPA) 77, "Recommended Practice on
static Electricity", and/or the A~erican Petroleum Institute (API)
Recommended Practice 2003, "Protection Against Ignitions Arising Out of
Static, Lightning, and Stray Currents".
Improper filling of portable gasoline containers creates danger of fire.
Only dispense gasoline into approved and properly labeled gasoline
containers. Always place portable containers on the ground. Be sure pump
nozzle is in contact with the container while filling. Do not use a
nozzle's lock-open device. Do not fill portable containers that are
inside a vehicle or truck/trailer bed.
Never siphon gasoline by mouth. Use only as a'motor fuel. Do not use for
cleaning, pressure appliance fuel, or any other such use. DO NOT USE OR
STORE near heat, sparks or open flames. USE AND STOR~ ONLY IN W~LL
yENTILATED AREA. Keep container closed when not in use. READ AND OBSERVE
ALL PRECAUTIONS ON PRODUCT LABEL.
Container is not designed to contain pressure. Do not use pressure to ~
empty container or it may rupture with explosive force. Empty containers
retain product residue (solid, liquid, and/or vapor) and can be dangerous.
Do not pressurize, cut, weld, braze, solder, drill, grind, or expose such
containers to heat, flame, sparks, static electricity, or other sources of
ignition. They may explode and cause injury or death. Empty containers
should be completely drained, properly closed, and promptly returned to a
dru~ reconditioner, or properly disposed of.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
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GENERAL CONSIDERATIONS:
Consider the potential hazards of this material (see Section 3),
applicable exposure limits, job activities, and other substances in the
Revision Numbec: 20
Revision Date: 07/~1/99
MSDS Number: 00~205
×-395021 (01-89)
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CHEVRON NID-GRADEUNLEADED GASOLINE Page 8 of 15
protective equipment. If engineering controls or work practices are not
adequate to prevent exposure to harmful levels of this material, the
personal protective equipment listed below is reco~ended. The user should
read and understand all instructions and limitations supplied with the
equipment since protection is usually provided for a limited time or under
certain circumstances.
ENGINEERING CONTROLS
Use process enclosures, local exhaust ventilation, or other engineering
controls to control airborne levels below the reco~u~ended exposure limits.
PERSONAL PROTECTIVE EQUIPMENT
EYE/FACE PROTECTION:
No special eye protection is normally required. Where splashing is
possible, wear safety glasses with side shields as a good safety practice.
SKIN PROTECTION:
No special'protective clothing is normally required. Where splashing is
possible, select protective clothing depending on operations conducted,
physical requirements and other substances. Suggested materials for
protective gloves include: <Nitrile> <Polyurethane> <Viton> <Chlorinated
Polyethylene (or Chlorosulfonated Polyethylene or CPE)>
RESPIRATORY PROTEC?ION:
Determine if airborne concentrations are below the recommended exposure
limits. If not, wear a NIOSH approved respirator that provides adequate
protection from measured concentrations of this material. Use the
following element(s) for air-purifying respirators: Organic Vapor. Use a
positive pressure, air-supplying respirator if there is potential for
uncontrolled release, exposure levels are not known, or other
circumstances where air-purifying respirators may not provide adequate
protection.
9. PHYSICAL AND CHEMICAL PROPERTIES
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PHYSICAL DESCRIPTION:
Colorless to yellow liquid
VAPOR PRESSURE:
VAPOR DE,SI TY
(AIR-i):
BOILING POINT:
FREEZING POINT:
MELTING POINT:
SOLUB I L I TY:
SPECIFIC GRAVITY:
EVAPORAT I ON RATE:
PERCENT VOLATILE
(VOL):
NDA
5 - 15 PSI @ 100F (REID)
3-4
25 - 225C
NDA
NA
Soluble in hydrocarbons; insoluble in water.
0.7 - 0.8 @ 15.6/15.6C
NDA
99.%
STABILITY AND REACTIVITY
Revision Number: 20 " Revision Date:
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MSDS Number: 003205
x-nOS021 (01-89)
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CHKVRON MID-~RADE UNLEADED GASOLINE Pa~e
None known
CHEMICAL STABILITY:
Stable.
CONDITIONS TO AVOID:
See section 7.
INCOMPATIBILITY WITH OTHER MATERIALS:
May react with strong oxidizing agents, such as chlorates, nitrates,
peroxides, etc.
HAZARDOUS POSYMERIZATION:
Polymerization will not occur.
11. TOXICOLOGICAL INFORMATION
9 O! 15
EYE EFFECTS:
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The mean 24-hour Draize eye irritation score in rabbits is 0.
SKIN EFFECTS:
This material was not a skin sensitizer in the modified ~uehler Guinea Pig
Sensitization Test. For a 4-hour exposure, the Primary Irritation Index
(PII) in rabbits is: 4.8.
ACUTE ORAL EFFECTS:
The oral LD50 in rats is > 5 ml/kg.
ACUTE INHALATION EFFECTS:
No product toxicology data available.
ADDITIONAL TOXICOLOGY ~NFORMATION:
When vapor exposures are low, or short duration and infrequent, such as
during refuelling and tanker loading/unloading, neither total hydrocarbon
nor components such as benzene are likely to result in any adverse health~
effects. In situations such as accidents or spills where exposure to
gasoline vapor and liquid is potentially high, attention should be paid to
potential toxic effects of specific components in addition to those of
total hydrocarbons. Information about specific components in gasoline are
found in Section 1 and Section lS of this MSDS. More detailed information
on the health hazard of specific gasoline components can be obtain from
the Chevron F~mergency Information Center (see Section i for telephone
numbers).
A study was done in which ten volunteers were exposed for 30 minutes to
about 200, 500 or 1000 ppm concentrations of the vapor of three different
unleaded gasolines. Irritation of the eyes was the only significant effect
observed, based on both subjective and objective assessments.
An inhalation study with rats exposed to 0, 400 and 1600 ppm of wholly
vaporized unleaded gasoline, 6 hours per day on day 6 through 16 of
gestation, showed no teratogenic effects nor indication of toxicity to
either the mother or the fetus (sex ratio, embryotoxicity, fetal growth
and development).
An inhalation study with pregnant rats exposed to 0, 1000, 3000, and 9000
ppm of unleaded gasoline vapor, 6 hours per day on days 6 through 20 of
gestation, showed no teratogenic effects nor indications of toxicity to
either the mother or the fetus.
Revision Number: 20
Revision Date: 07/31/99
MSDS Number: 003205
X-00S021 (01-1~)
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CHEVRON NID-GRADE UNLEADED GASOLINE Page 10 of 15
exposed to 2056 ppm of wholly vaporized unleaded gasoline for 6 hours per
day, 5 day per week for up to 18 months. Histopathology of the peripheral
nervous system and spinal cord revealed no distal axonal neuropathy of the
type associated with exposure to n-hexane even though gasoline contained
1.9% n-hexane. The authors concluded that gasoline treatment may have
amplified the incidence and prominence of some naturally occurring age
related changes in the nervous system.
Wholly vaporized unleaded gasoline was used in a 3 month inhalation study.
Groups of 40 rats (20 males, 20 female) and 8 squirrel monkeys (4 male, 4
female) were exposed 6 hours per day and 5 days per week for 13 weeks to
384 or 1552 ppm gasoline. One group of each species served as unexposed
controls. The initial conclusion of this study was that inhalation of
gasoline at airborne concentrations of up to 1522 ppm caused no toxicity
in rats or monkeys. However, further histopathological examination of male
rat kidneys on the highest dose group revealed an increased incidence and
severity of regenerative epithelium and dilated tubules containing
proteinaceous deposits.
Rabbits were exposed to unleaded gasoline 24 hour per day, 5 days per week
for two weeks; 0, 2.5, S or 8 ml were applied to the skin under an
occlusive dressing. Applied in such a way, this motor gasoline was
corrosive to the rabbit skin and animals in all dose groups had decreased
bodyweights. The slight and/or isolated systemic effects noted in the
study were judged to be not significant.
Unleaded gasoline was assayed for mutagenic and cytogenettc activity.
Gasoline was not mutagenic, either with or without activation, in Ames
assay (Salmonella typhimurium), Saccharamyces cerevisesae,.or mouse
lymphoma assays. In addition, point mutations were not induced in human
lymphocytes exposed to gasoline in vivo. The gasoline was not mutagenic
when tested in the mouse dominant lethal assay. Administration of
gasoline to rats did not cause Chromosomal aberrations in their bone
marrow cells.
In a lifetime skin painting study, 50 male Swiss mice were treated with
0.05 ml of unleaded gasoline three times per week. Positive control
groups were treated with benzo(a)pyrene in acetone; an untreated negative
control group was also included. The repeated exposure to gasoline caused
severe skin irritation, ulceration, hyperkeratosis and abscesses. There
was no statlst[cally significant increase in the incidence of skin tumors.
Histopathology at the end of the study showed that unleaded gasoline did
not increase the incidence of tumors in other organs.
Lifetime inhalation of wholly vaporized unleaded gasoline at 2056 ppm has
caused increased liver tumors in female mice. The mechanism of this
response is still being investigated but is thought to be an epigenetic
process unique to the female mouse. This exposure also caused kidney
damage and eventually kidney cancer in male rats. No other animal model
studied has shown these adverse kidney effects and there is no
physiological reason to believe that they would occur in man. EPA has
concluded that the mechanism by which wholly vaporzied unleaded gasoline
causes kidney damage is unique to the male rat. The response in that
species (kidney damage and cancer) should not be used in human risk
m~m~n~ _ ,,,,m ,
Revision Number: 20
Revision Date: 07/3Z/99
MSDS Number: 003205
X-DOS021 (01-88)
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CHEVRON MID-~RADt~ UNLEADED (~ASOL:INE Page ~.~. of~ 1.5
In their 1988 review of carcinogenic risk from gasoline, The Internatioal
Agency for Research on Cancer (IARC) noted that, because published
epidemiology studies did not include any exposure data, only occupations
where gasoline exposure may have occurred were reviewed. These included
gasoline service station attendants and automobile mechanics. IARC also
noted that there was no opportunity to separate effects of combustion
products from those of gasoline itself. Although IARC allocated gasoline
a final overall classification of Group 2B, i.e. possibly carcinogenic to
humans, this was based on limited evidence in experimental animals plus
supporting evidence including the presence in gasoline of benzene and 1.
3-butadiene. The actual evidence for cacinogenicity in humans was
considered inadequate.
To explore the health effects of workers potentially exposed to gasoline
vapors in the marketing and distribution sectors of the petroleum
industry, the American Petroleum Institute sponsored a cohort mortality, a
nested case-control, and an exposure assessment study. Histories of
exposure to gasoline were reconstructed for a cohort of more than 18,000
employees from four companies for the time period between 1946 and 198S.
Data were analyzed based on length of employment, length of exposure, job
category, age at first exposure and estimated cumulative and peak
exposures. Cumulative exposure was defined as the sum of products of TWA
exposure and duration of exposure of each job in an employee's work
history. Amoung cohort members, cumulative exposure ranged from 2 to
8,000 ppm-years. In general, long-term drivers at small terminals had the
highest exposures, and short-term workers with "other terminal jobs" had
the lowest. A peak exposure was def'ined as an episode in excess of $00
ppm lasting 15 to 90 minutes.
The results of the cohort study indicated that there was no increased
mortality from either kidney cancer or leukemia among marketing and marine
distribution employees who were exposed to gasoline in the petroleum
.industry, when compared to the general population. More importantly,
based on internal comparisons, there was no association between mortality
from kidney cancer or leukemia and various indices of gasoline exposure.
For acute myeloid leukemia (AML), a non-significant mortality increase was
found in land-based terminal employees, 'but no trend was detected when the
data were analyzed by various gasoline exposure indices. This
non-significant excess was limited to land-based terminal employees hired
prior to 1948. On the other hand, a deficit of mortality from AML was
observed among marine employees.
In addition to the cohort study, a subsequent nested case-control study
was also conducted, Four diseases were selected for analysis in the
case-control study: Leukemia (all cell types), AML, kidney cancer and
multiple myeloma. For each case, five individually matched controls were
randomly selected from the cohort. In the original cohort study, broad
gener{c job categories were used as part of exposure assessment. In the
case-control study, a finer and more homogeneous job classification was
developed. In addition to job category, several quantitative gasoline
exposure indices were used in the case-control analysis: length of
exposure, cumulative exposure (ppm-years in terms of total hydrocarbons)
Revision Number: 20
Revision Date: 07/$1/99
MSD$ Number: 003205
X-DOS021 (01-89)
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CHEVRON NIP-GRADE UNLEADED GASOLINE Page 12 of 15
(1948 or before and 19~9 or after) vas also included as an exposure index.
Results of the nested case-control study confirmed the findings of the
original cohort study. That is, exposure to gasoline at the levels
experienced by this cohort of distribution workers is not a significant
risk factor for leukemia (all cell types), acute myeloid leukemia, kidney
cancer or multiple myeloma.
12. ECOLOGICAL INPORMA?ION
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ECO?OXICIT¥:
Gasoline studies have been conducted in the laboratory under a variety of
test conditions with a range of fish and invertebrate species. An even
more extensive database is available on the aquatic toxicity of individual
aromatic constituents. The majority of published studies do not identify
the type of gasoline evaluated, or even provide distinguishing
characteristics such as aromatic content or presence of lead alkyls. As a
result, comparison of results among studies using open and closed vessels,
different ages and species of test animals and different gasoline types,
is difficult.
The bulk of the available literature on gasoline relates to the
environmental impact of monoaromatic (BTF.,X) and diaromatic (naphthalene,
methylnaphthalenes) constituents. In general, non-oxygenated gasoline
exhibits some short-term toxicity to freshwater and marine organisms,
especially under closed vessel or flow-through exposure conditions in the
laboratory. The components which are the most prominent in the water
soluble fraction and cause aquatic toxicity, are also highly volatile and
can be readily biodegraded by microorganisms.
The 96-hour LC50 in rainbow trout (Oncorhynchus mykiss) is 2.7 mg/1
(BTEX). The 48-hour LCS0 in daphnia (Daphnia magna) is 3.0 mg/1 (BTEX).
The 96-hour LCS0 in sheepshead minnow (Cyprinodon variegatus) is 8.3 mg/1
(BTEX). The 96-hour LCS0 in mysid shrimp (Mysidopsis bahia) is 1.8 mg/1
(BTEX).
EI%WIRONNENTAL FATE:
Following spillage, the more volatile components of gasoline will be
rapidly lost, with concurrent dissolution of these and other constituents
into the water. Factors such as local environmental conditions
(temperature, wind, mixing or wave action, soil type, etc),
photo-oxidation, biodegradation and adsorption onto suspended sediments,
can contribute to the weathering of spilled gasoline. The aqueous
solubility of non-oxygenated unleaded gasoline, based on analysis of
benzene, toluene, ethylbenzene+xylenes and naphthalene, is reported to be
112 mg/1. Solubility data on individual gasoline constituents also
available.
13. DISPOSAL CONSIDERATIONS
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Use material for its intended purpose or recycle if possible.
Revision Number: 20
Revision Date: 07/31/99
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CHEVRON NID-GRADE UNGEADED GASOLINE Page 13 of 15
This material, if it must be discarded, may meet the criteria of a
hazardous waste as defined by US~PA under RCRA (40CFR261) or other State
and local regulations. Measurement of certain physical properties and
analysis for regulated components may be necessary to make a correct
determination. If this material is classified as a hazardous waste,
federal law requires disposal at a licensed hazardous waste disposal
facility.
lt. TRANSPORT INFORMATION
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The description shown may not apply to all shipping situations.
Consult 49CFR, or appropriate Dangerous Goods Regulations, for
additional description requirements (e.g., technical na~e) and
mode-specific or quantity-specific shipping requirements.
DOT SHIPPING NAME: GASOLINE
DOT HAZARD CLASS: 3 (FLAMMABLE LIQUID)
DOT IDENTIFICATION NUMBER: UN1203
DOT PACKING GROUP: II
15. REGULATORY INFORMATION
SARA 311 CATEGORIES:
1. I~ediate (Acute) Health Effects: YES
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2. Delayed (Chronic) Health Effects: YES
3. Fire Hazard: YES
4. Sudden Release of Pressure Hazard: NO
5. Reactivity Hazard: NO
REGULATORY LISTS SEARCHED:
01=SARA 313
02=MASS RTK
03-NTP Carcinogen
04-CA Prop 65-Carcin
05-CA Prop 65-Repro Tox
06-IARC Group 1
07=IARC Group 2A
08=IARC Group 2B
09=SARA 302/304
10=PA RTK
ll~NJ RTK
12=CERCLA 302.4
13-MN RTK
14-ACGIH TWA
15-ACGIH STEL
16-ACGIH Calc TLr
17-OSHA PEL
18=DOT Marine Pollutant
19-Chevron TWA
20-EPA Carcinogen
22-TSCA Sect 5(a)(2)
23=TSCA Sect 6
24-TSCA Sect 12(b)
25~TSCA Sect 8(a)
26-TSCA Sect 8(d)
27=~SCA Sect 4(a)
28=CanadianWHMIS
29=OSHA CEILING
30-Chevron STEL
The following components of this material are found on the regulatory
lists indicated.
BENZENE, ETHYL-
is found on lists:
N-BUTANE
is found on lists:
CYCLOHEXANE, METHYL
is found on lists:
01,02,03,10,11,12,13,14,15,17,26,28,
02,10,11,13,1~,28,
02,10,11,13,1~,17,26,28,
Revision Number: 20
Revision Date: O7/31/99
MSDS Number: 003205
/.~- DOS(J21 (01 -§9)
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is found on lists:
N-HEXAN~.
is found on lists:
CYC LOHEXANF.
is found on lists:
BENZF2~, DIMETHYL-
is found on lists:
N-HEPTANE
is found on lists:
MID-GRADE UN~ADED GASOLINE
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01,02,05,10,11,12,13,14,17,26,28,29,
01,02,10,11,12,13,14,17,27,28,
01,02,10,11,12,13,14,17~26,28,
01,02,10,11,12,13,14,15,17,
02,10,11,13,14,15,17,26,28,
Page
2-METHOXY-2-METHYL PROPANE
is found on lists: 01,02,10,11,12,14,24,26,27,30,
BENZENE, TRIMETHYL-
zs found on lists: 02,10,11,13,14,26,28,
'2,2,4-TRIMETHYLPENTANE
zs found on lists: 02,10,11,12,26,
2-ETHOXY-2-METHYL PROPANE
zs found on lists: 25,26,
ETHYL ALCOHOL
is found on lists: 02,10,11,13,14,17,28,
BENZENE
is found on lists: 01,02,03,04,06,10,11,12,13,14,15,17,20,28,29,
2-METHOXY-2-METHYL-BUTANE
is found on lists: 24,25,26,27,30,
GASOLINE (GENERIC)
~s found on lists: 04,08,1~,15,17,
PENTANES
ls found on lists= 14,15,17,
~s found on lists: 14,15,
WI{MIS CLASSIFICATION:
Class B, Division 2: Flammable Liquids
Class D, Division 2, Subdivision A: Very Toxic Material
-Carcinogenicity
Class D, Division 2, Subdivision B: Toxic Material
-Skin or Eye Irritation
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16. OTHER INFORMATION
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NFPA RATINGS= Health 1; Flammability 3; Reactivity 0;
HMIS RATINGS: Health 1; Flammability 3: Reactivity 0;
(O-Least, 1-Slight, 2-Moderate, 3-High, 4-Extreme, PPE:- Personal
.Protection Equipment Index recom~endation, *- Chronic Effect
Indicator). These values are obtained using the guidelines or
published evaluations prepared by the National Fire Protection
Association (NFPA) or the National Paint and Coating Association
(for HMIS ratings).
REVISION STATEMENT:
This revision updates Sections 1 (Add Product Numbers).
ABBREVIATIONS THAT MAY HAVE BEEN USED IN 1'HIS DOCUMENT:
Revision Number: 20
Revision Date: 07/31/99
MSDS Number: 003205
X-DOS021 (01-89)
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CRKVRON MID-GRADE UNLEADED GASOLINE
STSL - Short-term Exposure Limit
~Q - Reportable ~an~it¥
C - Ceiling Limit
Al-5 - Appendix A Categories
NPA - No Data Available
Page 15 of 15
TPQ - ?hreshold Planning Quantity
PEL - Permissibl~ Exposure Limit
CAS - Chemical Abstract Service Number
() - Change Has Been Proposed
NA - Not Applicable
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Prepared according to the OSHA Hazard Communication standard
(29 CFR 1910.1200) and the ANSI MSDS Standard (z400.1) by the Toxicology
and Health Risk Assessment Unit, CRTC, P.O. Box 1627, Richmond, CA 94804
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The above information is based on the data of which we are aware and is
believed to be correct as of the date hereof. Since this information may
be applied under conditions beyond our control and with which we may be
unfamiliar and since data made available subsequent to the date hereof
suggest modification of the information, we do not assume any responsibil-
ity £or the results o! its use. This information is furnished upon
condition that the person receiving it shall make his own determination
of the suitability of the material for his particular purpose.
**********************************************************************
THIS IS TIIE LAST PAGE OF THIS MSDS
Revision Number: 20
Revision Date: 07/~/99 MSDS Number: 003205
X-OOSO?! I01-89)