HomeMy WebLinkAboutHAZ-WASTE PLAN 6/19/1992Earth Systems Environmental,
A Member of The Earth Systems Group
Inc.
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WORK PLAN
FOR
EXCAVATION AND REMEDIATION OF
GASOLINE IMPACTED SOIL
BAKERSFIELD COLLEGE
1801 PANORAMA DRIVE
BAKERSFIELD, CALIFORNIA
June 19, 1992
Prepared by
Earth Systems Environmental, Inc.
6701 McDivitt Drive, Suite B
Bakersfield, California 93313
(805) 836-0901
FAX (805) 836-0911
EB-8191-2
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Earth Systems Environmental, Inc.
A Member of The Earth Systems Group
6701 McDivitt Drive, Suite B · Bakersfield, CA 93313 ° (805) 836-0901 ° FAX (805) 836-0911
June 19, 1992
Project No.: EB-8191-2
Doe No.: 9206-E058,WP
City-of Bakersfield Fire Department
Hazardous Materials Division
2101 H Street
Bakersfield, California 93301
Attention: Mr. Joe A. Dunwoody
WORK PI,AN FOR REMEDIATION OF
GASOLINE IMPACTED SOil,q
BAKERSFIELD COIIJFGE
180t PANORAMA DRIVE
BAKERSFIELD, CALIFORNIA
REFERENCE: TANK CLOSURE REPORT, BAKERSFIELD COLLEGE,
'(ESE, MAY 21, 1992)
Introduc.t. ion
Earth Systems Environmental (ESE) has been contracted bY -Franzen Hill
representing Bakersfield College to prepare this work plan for soil remediation
.activities at the Bakersfield College automotive maintenance department, fueling
facility located' at 1801 Panorama Drive in thc city of Bakersfield in Kern County,
California-(Figure l). ESE proposes excavation and bioremediation/aeration of
approximately 50 cubic-yards of soils impacted with gasoline hydrocarbons recently
documented by ESE .in the above referenced report.
After review of the available data, ESE believes the impacted soil can be treated on-
site utilizing biological degradation technologies. .The advantages of
. bioremediation/aeration is the permanent destruction -of the petroleum
hydrocarbons, thus minimizing the potential long term liabilities associated with off-
site disposal at a hazardous waste facility. The final by-products of biologic
degradation of the petroleum hydrocarbons consist primarily of carbon dioxide (CO2)
and water-.
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Bakersfield College
2 June 19, 1991
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We propose the construction of a bioremediation/aeration treatment system on-site
as the most suitable method for mitigating the volatile petroleum based compounds
and reducing the concentrations of gasoline hydrocarbons within the soils at the
above mentioned site to levels considered to be non-hazardous by Regional Water
Quality Control Board Central Valley District, and City of Bakersfield Fire Department,
Hazardous Materials Division criteria. Following approval by City of Bakersfield Fire
Department, Hazardous Materials Division a biological/aeration treatment system will
be implemented to treat impacted soils at the site. Upon successful completion of .the
treatment . (reduction of total petroleum hydrocarbon concentration to below the
acceptable limits), and with the permission of the local governing regulatory
agency, we will request that the treated soil be. spread on-site as grading fill. We
anticipate the minimum time frame for successful treatment to be on the order of 3
months.
All methods .employed are in compliance with regulations and guidelines set forth in
California Code of Regulations (CCR) Title 22, Article 11, and Title 23, Chapter 3,
California Site Mitigation Decision Tree Manual, the Code of Federal Regulations (CFR)
Title 29, part' 1910, Section 120, CFR Title 40, Parts 300-399, along with Tri-Regional
Board Staff Recommendations for Preliminary Evaluation and Investigation of
Underground Tank Sites, 'and San Joaquin Valley' Unified Air Pollution Control
District, Kern County Zone guidelines, as well as accepted professional
environmental/geotechnical engineering procedures and applicable local
regulations.
Subject to your acceptance of this work plan, our plan to treat soils includes:
· Preparation of a site Health and Safety Plan in accordance with regulations set
fOrth in Federal OSHA CFR 29 1910.120, as well as California OSHA regulations.
· Excavation of approximately. 50 cubic yards of gasoline impacted soil.
· Confirmatory sampling and analysis of excavation pit base and sidewalls as
well as providing a vertical profile of the gasoline concentrations during
excavation.
EB -81-91-2 9206-E058.WP
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Bakersfield College
3 June 19, 1991
Backfilling pit with "clean" import fill material, compacting, and returning to
surface grade.
· Construction and placement of impacted soil within treatment cell.
· Mechanical cultivation of
biodegradation, and aeration.
the impacted soil resulting in oxygenation,
· Verification samPling and preparation of a final report documenting
remediation activities.
Site Description
The site is located at 1801 Panorama Drive in the city of Bakersfield in Kern County,
California (Figure 1). A 3,000 gallon underground gasoline storage tank, fuel
dispenser, and associated product pipeline were removed on May 1, 1992 (Figure 2).
The underground storage' tank was operated to fuel Bakersfield College's maintenance
department vehicles.
Project Background
Bakersfield College 'contracted with Franzen Hill of Tulare, California~ to remove the
underground fuel storage tank, dispenser, and associated product pipeline at the site.
On May 1, 1992, Franzen Hill removed the tank, dispenser, and associated product
pipeline. The tank was removed under permit with the City of Bakersfield Fire
Department, Hazardous Materials Division.
Franzen Hill contracted with Earth Systems Environmental to provide an
environmental technician to collect soil samples at the direction of Mr. Joe Dunwoody
with the City of Bakersfield Fire Department, Hazardous Materials Division.
One soil sample (TH-I) was collected from beneath the center of the the former tank
location at a depth of 11 feet below surface grade (Figure 2). Two soil samples (TH-2,
and TH-3 ) were collected from beneath the former product pipeline at a depth of 6
and 4 feet below surface grade, respectively. One soil sample (TH-4) was collected
from beneath the former dispenser at a depth of 4 feet below surface grade. The
samples were collected from the backhoe bucket immediately after soil excavation
and stored in 2" brass tubes, sealed with teflonTM liners and end caps. .The samples
EB-8191-2
9206-E058.WP
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Bakersfield College
4 June 19, 1991
were then labeled, handled and transported according to the United States
Environmental Protection Agency (USEPA) protocol to a State of California
Department of Health Services (DOHS) certified laboratory. Sample identification and
chain-of-custody procedures were utilized for the samples to ensure sample integrity
and to document sample possession from the time of collection to its ultimate
destination. The sample label identified' the job number, sampler, date and time of
collection and sample number unique to the sample. All sampling equipment was
washed with TSPTM (tri-sodium phosphate) cleanser, pre-rinsed with tap water and a
final rinse of de-ionized water prior to sampling.
The soil samples designated for chemical analysis were submitted to B C Laboratories
in Bakersfield, a State of California Department of Health Ser~vices (DOHS) certified
laboratory. Appendix A presents copies of the analytical results and chain-of-
custody documents. The soil samples were analyzed for Total Purgeable Hydrocarbons
(TPH) as gasoline using the California DOHS LUFT Method, and for the gasoline
constituent volatile aromatics, benzene, toluene, ethylbenzene, and total xylenes
(BTEX) using USEPA Test Method 8020.
Total Purgeable Hydrocarbons (TPH) as gasoline and the gasoline constituent volatile
aromatics were not detected at or above the detection limit in the sample TH-1
analyzed from beneath the' former underground storage tank. However, TPH as
gasoline were detected at concentrations of 21 mg/kg, and 4,000 rog,kg from the
samples TH-2 and TH-3. TH-2 was positioned beneath the product pipeline on the side
of the excavation at a depth of 6 feet, where there, was a visual indication questioning
the integrity of the tank. TH-3 was positioned beneath the product pipeline run. TPI-I
as gasoline was detected at concentrations of 1,000 mg/kg in sample TH-4 from
beneath the former dispenser. Volatile. aromatic compounds were detected in minor
concentrations in samples TH-2 and TH-3, but were detected in significant
concentrations in TH-4 with benzene detected at 2 mg/kg.
EB-8191-2
9206-E058.WP
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Bakersfield College
5 June 19, 1991
Table 1 presents a summary of the analytical results for TPH as gasoline, and the
gasoline constituent volatile aromatics in the four soil samples:
TABLE 1. Analytical Results expressed in milligrams per kilogram.
Sample No.
TH-1
Depth
11'
TH-2 I 6'
TH-3 I n'
TPH I Benzene
Gasoline
2~ I ND
4~000 I ND
Toluene ] Ethyl-
benzene
ND [ ND
0.07 ] 0.07
10 [ ND
36 [ 14
1.0 I 6.8
TH-4 ] 4'
A L NA
1 ~000 [ 2
1 ~000[ 0.67
Total
Xylenes
ND
1.76
350
199
17.5
ND: None Detected at or above minimum reporting level.
NA: Not Applicable
A L: Regional Water Quality Control Board Action Level for contaminants in soil. Action Levels
were calculated using the LUFT methodology by multiplying the most stringent current federal or
state water quality standards by a factor of 1000 to account for attenuation due to soil
composition and distance from groundwater.
Based on the soil sampling and analysis, detectable concentrations of TPH as gasoline
and the gasoline constituent volatile aromatics were not present in the soil samples
collected from beneath the former underground fuel storage tank. However,
gasoline hydrocarbons constituents were detected in the soil samples from beneath
the product pipeline and dispenser. Bakersfield College has contracted with Franzen
Hill to excavated the approximately 50 cubic yards of soil at the site with
concentrations of TPH as gasoline in excess of 1,000 mg/kg.
ESE has been contracted by Franzen Hill to prepare this work plan, provide an
environmental technician to collect soil samples during and after excavation and soil
treatment, conduct laboratory analysis of the soil samples, and prepare a closure
report for the site. Subsequently we have developed the following scope of work:
Health & Safety Plan
A written Health and Safety plan will be implemented for site work conducted during
the mitigation phase of this project. The purpose of the plan is to provide specific
safety procedures to be implemented during the handling of petroleum hydrocarbon
EB-8191-2
9206-E058.WP
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Bakersfield College
6 June 19, 1991
contaminated materials. The Health and Safety Plan is required under regulations set
forth in Federal OSHA CFR 29 1910.120, since the referenced report documented the
presence of potentially hazardous materials at the site. This Health and Safety plan is
included as Appendix A to the work plan.
Soil Excavation
Franzen Hill will provide a backhoe to excavate the estimated 50 cubic yards of
impacted soil at the site. Based upon Regional Water Quality Control Board Action
Levels, City of Bakersfield policy, and LUFT guidelines, ESE proposes an action level of
1,000 mg/kg for the maximum 'concentration of total purgeable hydrocarbons as
gasoline. This action level is recommended due. to the significant depth of
groundwater estimated to be approximately 400 feet below surface grade beneath the
site (Kern County Water Agency, Improvement District No. 4, 1990 Report on Water
Conditions, February 1, 1991). No perched groundwater is known to exist beneath the
subject site. Subsequent to the City' of Bakersfield Fire Department, Hazardous
Materials Division approval, soils will be excavated until the soils remaining in-place
are believed to have concentrations of total purgeable hydrocarbons as gasoline less
than 1,000 mg/kg.
Prior to excavation, Underground Service Alert (USA) will be notified 48 hours in
advance. In addition, the excavation contractor will obtain any necessary excavation
permits from California Occupational Safety and Health Administration (Cai OSHA).
Contaminated soils in the areas 'identified by the ESE Tank Closure Report dated May
21, 1992 will be removed by excavating with backhoe. The contaminated soil will
then be placed in the remediation cell. Excavating will proceed to the to an estimated
length, Width, and depth of i2 feet, .or until concentrations are below the prescribed
action levels in the vicinity of the former gasoline product Pipeline, and dispenser.
The estimated total volume of impacted soil to be removed is approximately 50 cubic
yards (this includes partial mixing of clean material anticipatedJ to be sluff). The
excavation will be performed so that sidewall slopes conform to California and
Federal OSHA code requirements.
EB-8191-2
9206-E058.WP
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Bakersfield College
7 June 19, 1991
Excavation and Aeration Emissions
Volatile aromatic hydrocarbons may be emitted during the excavation and placement
of the semi-volatile petroleum impacted soil at. the site. However, a review, of the
available analytical data indicates that the profile of gasoline hydrocarbons
impacting the soil qualifies for an exemption to air emissions permitting as described
in San Joaquin Valley Unified Air Pollution Control District Kern County Zone
regulations because less than 60 cubic yards of soil will be excavated and treated
through 'aeration. Earth Systems Environmental believes that the excavation and
aeration of the 50 cubic yards of gasoline impacted soil does not present a public
health risk.
Excavation Pit Field Screening
During eXcavation soil samples will be collected from the base and sidewalls of the
excavation pit, and-will be screened for total organic vapors with a portable flame-
ionization detector (FID). I-Ieadspace vapor analysis will be performed by filling a
mason jar to 50% capacity to produce a head space allowing volatilization for a period
of 15 minutes,' and protruding the probe of the FID through the cap and into the
headspace for analysis. The FID readings will be recorded on the daily log. When
field screening indicates concentrations less than .1,000 ppm, the excavation will be
discontinued. Otherwise ~excavation will continue, until field screening indicates
concentrations less than 1,000 ppm. Soil samPles will also be collected at a five foot
vertical depth increment during excavation so that the vertical profile of gasoline
hydrocarbons can be assessed.
Gasoline impacted soil will be removed until the soils remaining in place contain less
than 1,000 mg/kg total purgeable hydrocarbons (TPI-I) as gasoline, unless otherwise
Specified by the City of Bakersfield Fire Department, Hazardous Materials Division.
Soil grab samples will be collected from the boundaries of the excavation to verify
removal of the impacted soil.
EB-8191-2
9206-EO58.WP
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Bakersfield College
8 June 19, 1991
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Soil Sample Collection
Following excavatiOn five verification soil samples will be collected from the base
and sidewalls of the excavation pit. The soil samples wilt be collected in 2" brass tubes
filled in such a .way that no. headspace remains, immediately sealed with a Teflon®
lined cap, labeled, and placed on ice for transport to a California Department of
Health Services (DOHS) certified laboratory. Strict chain of custody procedures will
be utilized for all samples c°lleeted to ensure sample integrity and to document
sample possession from the time of collection to the final destination.
Laboratory Analysis: Excavation. Verification Soil Samples
Eight soil samples comprised of the three collected for vertical profiling of the
impacted soil, and the five from the excavation sidewalls and base will be analyzed
for total purgeable hydrocarbons as gasoline using the DOHS LUFT Method, and for
the gasoline constituent volatile aromatics benzene, toluene, ethylbenzene, and total
xylenes (BTEX) by USEPA Method 8020.
Backfill and Compaction
With the approval of the City of Bakersfield Fire Department, ~Hazardous Materials
Division, the excavation pit resulting from soil removal will be baekfilled with the
"clean" import soil to replace the removed impacted soil. The soil will be compacted to
90% relative compaction in 12 inch lifts.
Construction of Remediation Cell
The contaminated soil excavated from the site will be placed within a lined,
impermeable cell consisting of visqueen plastic sheeting. We estimate that the
following scope of work will result in satisfactory construction of the remediation
cell:
· Select remediation cell .subgrade.
, Construct lined remediation cell.
· Remove and segregate debris (i.e. large concrete pieces, timbers, steel
piping) not considered suitable for treatment in the cell.
· Transport contaminated material to remediation cell.
EB-8191-2
9206-E058.WP
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Bakersfield College
9 June 19, 1991
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Design, Management, and Monitoring
The system will be designed to minimize the total treatment cost while obtaining a
reasonable time frame for successful completion. It is important to note that the
system envisioned to excavate and spread the impacted soil onto the treatment
membrane will result in a significant decrease in the concentration of the petroleum'
hydrocarbons P through aeration, and oxygenation. ESE proposes to allow the aeration
process to continue as long as significant progress continues to be observed. This
will be done through aggressive turning of the soil. Aeration of this volume of
gasoline impacted soil is permissible under San Joaquin Valley Unified Air Pollution
Control District, Kern County Zone regulations.
The bioremedial/aeration system will utilize active mechanical cultivation by a
tractor and plow or dozer and ripper combination. Tilling of the stockpiled material
would be conducted on a weekly basis.
The impacted soil will be placed within the treatment cell at a thickness no greater
than 12 inches on an impermeable liner. The treatment cell will be approximately 40
feet by 40 feet.
Treatment Cell: Interim and Verification Soil Sampling
The progress of the treatment will be monitored periodically by an assistant geologist
or engineer using a OVM photo-ionization detector (PID) or a Foxb0ro® OVA (organic
vapor analyzer) 108 flame-ionization meter.
Soil sampling will be accomplished with a 2.5-inch diameter hand held ring sampler
equipped with stainless steel liners for soil retention. Soil samples will be collected
'for final verification of treatment. When contaminant levels are thought to be
acceptably low (to specified clean-up level or less), the soil stockpile will be sampled
in the presence of a representative of the City of Bakersfield Fire Department,
Hazardous Materials Division. Soil samples will be sealed with Teflon® film, capped,
and placed on ice for transport to a California Department of Health Services (DOHS)
certified laboratory. Strict chain of custody procedures will be utilized for all
samples collected to ensure sample integrity and to document sample possession from
EB-8191-2
9206-E058.WP
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Bakersfield College
10 June 19, 1991
the time of collection to the final destination. All sampling equipment will be washed
with TSP (tri-sodium phosphate) cleanser, and rinsed with tap water and de-ionized
water prior to sampling, between sample intervals to minimize the possibility of
cross-contamination.
Laboratory Analysis of Soil Samples
We anticipate the final verification sampling may require two soil samples each
representing 25 cubic yards of soil. Soil samples will be sent to a state-certified
laboratory for chemical analysis. Soil samples will be analyzed for Total Purgeable
Hydrocarbons (TPH) as gasoline by the D.O.H.S.L.U.F.T Method, and the gasoline
constituent volatile aromatics (BTEX) using USEPA Method 8020.
Treated Soil Disposition
The clean treated soil will be used as grading fill on the subject property. The treated
soil will be spread at a thickness of no greater than two inches over the property.
Report Preparation
The project manager will prepare a final report documenting the results of the soil
excavation and treatment which will be sent to the client. The final report will be
signed by a Registered Geologist and will contain a summary of the installation and
treatment activities, required permits, a site map showing soil sample locations,
description of methodologies used, certified laboratory reports and chain of custody
documents. A request will be made for closure of the case at this time.
Schedule and Conditions
It is expected that the excavation, placement of contaminated soil in the treatment
cell can be completed within two days upon receiving approval of the work plan by
the city. We anticipate that the soil will be monitored once every two weeks with a
OVA, with the verification sampling to be conducted approximately 3 months from
the initiation of treatment. With approval of the City of Bakersfield Fire Department,
Hazardous Materials Division, upon completed treatment of the soils, the system will
be dismantled and the remediated soils may be used as grading fill on-site.
EB-8191-2
9206-E058.WP
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Bakersfield College 1 1 Sune 19, 1991
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Thank you for your consideration of this work plan. If you 'have any questions, or if
I we can be of service in any way, please contact this office at your convenience.
I Sincerely,
_.Tim A. Martin / ~I~k
I tznvironmental Specialist ' Senior Geologist
cc: 1 - Addressee
1 - Bakersfield College - Chuck Palmgren
I - Franzen Hill - Tom Lockwood
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EB-8191-2
9206-E058.WP
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670t McOivi. Drive, Suite S
Bakersfield, CA 93313
(805) 836-0~1
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APPENDIX A
SITE HEALTH' AND SAFETY PLAN
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SITE HEALTH AND SAFETY PLAN
SITE DESCRIPTION
The site is located at 1801 Panorama Drive in the city. of Bakersfield in Kern County,
California. A 3,000 gallon underground gasoline storage tank, fuel dispenser, and
associated product pipeline were removed on May 1, 1992. The underground storage
tank was operated to fuel Bakersfield College's maintenance department vehicles.
SITE HISTORY
According to the ESE Tank Closure Report, dated May 21, 1992, a 3,000 gallon
underground gasoline storage tank, fuel dispenser, and associated product pipeline
were removed on May 1, 1992 by Franzen Hill under permit with the City of
Bakersfield Fire Department, Hazardous Materials Division. Reportedly, no soil was
removed from the site during removal of the tank and dispenser.
During the UST removal activities, 1989, soil samples were collected from beneath the
tank, dispenser, and product pipeline. Subsequent laboratory analysis of the soil
samples from beneath the product line and dispenser indicated concentrations of
total petroleum hydrocarbons (TPH) as diesel above the Regional Water Quality
Control Board (RWQCB) Action Level for this compound in soil.
Based on. these analytical results Franzen Hill has been retained to excavate
approximately 50 cubic yards of soil believed to be present which contain
concentrations of TPH as gasoline in excess of 1,000 mg/kg.
PURPOSE
The purpose of this plan, which was developed specifically for operations at the
referenced site, is to assign responsibilities, establish personnel protection standards
and mandatory safety procedures, and provide for contingencies that may arise
while removal, and bioremediation/aeration of the gasoline impacted, soil are belng
conducted at the site. This plan complies with, but does not replace, Federal Health
and Safety Regulations as set forth in 29 CFR 1910 and 1926,. California Health and
Safety Regulations set forth in Title 8, California Code of Regulations, and guidance
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Bakersfield College
2 June 19, 1992
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established by the California Department of Health Services. This plan is to be used
by ESE as a supplement to such rules, regulations, and guidance.
APPLICABILITY
The Provisions of the plan are mandatory for all on-site ESE employees engaged in
activities known to be or potentially associated with the presence of hazardous
materials. These activities may include, but are not limited to, mobilization, project
operations, and demobilization.
Changes and/or unanticipated site conditions may require modification of this Site
Health and Safety Plan (SHSP) in order to maintain a safe work environment. Any
proposed changes to this plan should be reviewed by the Corporate Health and Safety
Officer of ESE, prior to their implementation.
If this is not feasible, the project team leader may modify the plan and record all
changes in the field log book. Under no circumstances will the plan modifications
conflict with Federal, state, or local health and safety regulations.
Under 29 cFR 1910.120 (b) (15) ESE. is required to notify each subcontractor of 'the
hazardous materials identified by ESE. The acceptance of such responsibility does not
and shall not be deemed an acceptance of responsibility for any other health and
safety requirements, such as those related to excavating, trenching, drilling or
backfilling. Each subcontractor shall perform all work in accordance with a Site
Health and Safety Plan for its employees, which covers any exposure to hazardous
materials which may be present on site. The subcontractor shall hold ESE harmless
from, and indemnify it against, all liability in the case of any injury or injury of its
own employees. ESE reserves the right to review the subcontractor's Site. Health and
Safety Plan at any time.
ESE reserves the right to suspend the subcontractor's site work and ask the
subcontractor's personnel to evacuate the hazard area in the event of grossly
inadequate health and safety precautions on the part of the subcontractor or the
EB-8191-2
9206-E058.WP
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Bakersfield College
3 June 19, 1992
belief that the subcontractor's personnel are or may be exposed to an immediate
health hazard.
KEY PERSONNEL AND RESPONSIBILITIES
The key personnei and their responsibilities for this project are as follows:
Corporate Health and Safety Officer
The ESE Corporate Health and Safety Officer (CHSO) for this project is Mr. Robert
Mohle. It is his responsibility for developing and coordinating, the ESE health and
safety programs. For this project, he is responsible for reviewing and approving
this SHSP for accuracy and incorporating new information or guidelines which aid
the Project Manager and Site Health and Safety Officer in further definition and
control of potential health and safety hazards associated with the project.
Project Manager
The ESE Project Manager (PM) for this project is Mr. Mark Magargee. It is his
responsibility to report to upper-level management. The~ duties of the PM are as
follows:
· Prepare and organize the SHSP which describes all planned field activities
that may be encountered at the site.
· Obtains permission for site access and coordinate field activities.
· Brief field team on specific assignments and potential hazards, and ensures
that all health and safety requirements are met.
· Provides a copy of this SHSP to each member of the project field team.
Site Health and Safety Officer
The ESE Site Health and Safety Officer (SHSO) for this remediation is Mr. Tim Martin.
He advises the PM on all aspects of health and safety on-site and recommends
Other duties
stopping work if any operation threatens worker or public safety.
include:
· Implement the SHSP.
· Select personal protective clothing and equipment specific for the project
and ensures that they are properly stored and maintained.
EB-8191-2
9206-E058.WP
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Bakersfield College
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Assure that all personnel assigned to site have apPropriate health and
safety training and have a current baseline medical examination.
Assign key safety duties and responsibilities to team members.
Monitor the work parties for signs of stress, and also 'monitors on-site
hazards and conditions.
Know emergency procedures, evacuation routes, arranges on-site first aid
facilities and off-site emergency care.
· Conduct daily safety meetings and periodic inspections to determine if SHSP
is being followed.
· Establish and maintain site record keeping, including reporting accidents,
as required.
· Participate in preparation of SHSP and revise it as necessary.
· Verify that drilling or excavation locations have been cleared for
underground utilities and other subsurface structures before subsurface
exploration is initiated.
Team Members
The responsibilities for the team members are as follows:
· Take all reasonable precautions to'prevent injUry, to themselves and to
their fellow employees; and
· Performing only those tasks that they believe they can do safely, and
immediately reporting any accidents and/or unsafe conditions to the client
and the CHSO.
· Implementing the procedures set forth in the SHSP, and reporting any
deviations from the procedures described in the Plan to the' SHSO and to the
CHSO.
SITE INFORMATION
All field activities will take place on the Bakersfield College property. Ail excavation
activities will take place in the daylight hours between 7:00 A.M. and 7:00 P.M.
The presence and location of hazardous materials, which are hydrocarbon
compounds, has been confirmed through previous investigations.' If needed, three
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blasts of a horn will be sounded for site evacuation.
and has been verified through analytical testing.
This site information is current
HAZARD ASSESSMENT
Hazardous Materials
Hazardous materials .may be a health hazard to site personnel via ingestion, skin
absorption, or inhalation. Biohazards or accidental ingestion of contaminants may
occu~ via hand-to-mouth actions. Dust inhalation may also contribute to ingestion of
chemical contaminants. During excavation, soil sample collection, and sample
preparation, inhalation of contaminant vapors could occur. Skin absorption may
occur via contact with contaminated soil and/or ground water. The degree of hazard
depends upon the adverse characteristics and toxicity of the chemical contamination,
the amount of potential contact, and the exposure time. The greatest potential for
chemical hazard to site personnel is during excavation activities.
The following substance is potentially a chemical hazard at the subject site:
Substances Involved
Gasoline Fuel
Physical State
Liquid/Absorbed
Characteristics
Irritant
The following materials potentially present at this project site are specified by
California Health and Safety Code 25249.5 as recognized and confirmed by the State of
California as carcinogenic and/or mutagenic:
1. Gasoline containing benzene.
Potential Worker Hazards
With hydrocarbon-based liquids, contact may result in dermal irritation due to
desiccation. Respiration of air laden with hydrocarbon vapors may result in oxygen
deficiency and/or mucous membrane irritation. Mixtures of air and hydrocarbon
fuels exhibit an explosive range thus presenting an explosion hazard. Gasoline fuel
may contain significant amounts of benzene, a proven human carcinogen. Potential
exposure values and limits for benzene are listed in the table below.
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TABLE 1 - POTENTIAL EXPOSURE VALUF_~
Chemical Highest Concl IP1 TLV2 IDLH3 Flammable
DeteCted in (electron (ppm) Level 'Range
' Samples (ppm) volts) (percent)
i...Benzene 2.0 ' 0.9245 10 Carcinogen 1.3 - 7.1
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lionization Potential in electron 'volts-(eV)
2Threshold Limit Value as the time-weighted average (TWA) published by the American
Conference of Governmental Industrial Hygienists (ACGIH)
31mraediately dangerous to life and health (IDLH) level as published by National Institute of
Occupational Safety and Health (NIOSH), Publication Number 85-114, September 1985.
NA: not available
Benzene is a colorless liquid with an aromatic Odor. It is incompatible with strong
oxidizers like chlorine or bromine with iron. The routes of exposure for benzene
include inhalation, skin absorption, ingeslion, and skin and/or eye contact.
Symptoms of exposure to 'benzene include irritation to the eyes, nose~ and respiratory
system, giddiness, headache, nausea, staggering gait, fatigue, anorexia, lassitude,
dermatitis, and abdominal pain.
The potential health hazard from benzene exposure is low to moderate at this site.
Conditions for Suspension of Operations
Site monitoring equipment will include a Photo-ionization detector (PID) or a Flame-
ionization detector (FID) during drilling and trenching. Field activities at Level D
will be suspended when the continuous FID or PID level in the breathing zone
increases to ten times background levels (assuming an ambient range of five to ten
ppm).
Level of Protection
The level of Personal Protection Equipment (PPE) needed for this investigation is
Level D. Level D PPE includes coveralls, leather boots with steel toes and shanks, eye
protection, .safety helmet and gloves. If warranted, this Site Safety Plan can be
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modified for use of Level C sitUations. Modification to Level B or Level A is beyond
the scope for this Site Safety Plan and is not permitted.
The criteria for upgrading to Level C PPE is the detection of unknown gasses or
vapors in concentrations greater than 10 times background levels or unknown
liquids present within the work area. Level C PPE includes Tyvek suits, nitrile gloves
and rubber boots, eye protection, hard hat, and a full-face air-purifying respirator
with Scott 642-OA-H cartridge-filters or equivalent.
Physical Hazards
Workers will be positioned upwind from operating equipment at all times.
Excavation Sloping
Contaminated soils in the areas identified by ESE will be removed by excavating with
a backhoe. Excavating will proceed to a depth of approximately 12 feet below grade,
if necessary. -It is recommended that all open excavations be fenced. The sidewalls
for all excavations will be designed to protect employees working in excavations
from cave-ins and be in accordance with 'Federal OSHA requirements in 29-CFR Part
1926, Appendix B ,to Subpart P. The maximum allowable slope for each excavation will
depend on the soil type and shall be determined from Table B-1 in 29 CFR Part 1926.
The actual slope of the excavations will be less than the maximum slope, when there
are signs of distress. If this situation occurs, the slope will be cut back to an actual
slope which is at least one-half horizontal to one vertical (1/2 H: 1 V) less steep than
the maximum allowable slope.
Slips, Trips and Falls
All field personnel shall become familiar with the .general terrain and potential
physical hazards (ravines, potholes, and loose gravel) which would be associated with
accidental risk to slips, trips and/or falls.
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8 June 19, 1992
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Splashes and Spills
All field personnel shall wear appropriate chemical resistant gloves and goggles to
prevent potential dermal exposure to accident splashes and spills that may occur
during excavation of contaminated soil and soil sampling.
Sunburn
Working outdoors on sunny days for extended periOds of time can cause sunburn to
the skin. Excessive exposure to sunlight is associated with the development of skin
cancer. Field staff should take precautions to prevent sunburn by using sun-screen
lotion and/or wearing hats and long-sleeved garments.
Heat Stress
Heat stress can be a major hazard, especially for workers donning personnel
protectiVe equipment (PPE). The same protective materials that shield the body from
chemical exposure also limit the dissipation of body heat and moisture. Heat stress
can occur very quickly, depending on the work being performed, the ambient
weather conditions, clothing, and the individual characteristics of the worker.
Because heat stress is probably one of the most common (and potentially serious)
illness at hazardous waste sites, regular monitoring and other preventive
precautions are vital.
Heat stress monitoring should commence when personnel are wearing PPE,
including Tyvek-type coveralls, and the ambient temperature exceeds 70°F. If
impermeable garments are not worn, monitoring should start when the temperature
reaches 85°F. The following 'monitoring program is for workers wearing
semipermeable or impermeable encapsulating ensembles when the temperature in
the work area iR above 70°F:
Heart Rate should be measured by the radial pulse during a 30 second period as
early as possible in the rest period. The next work cycle should be shortened
by one-third while the rest period is kept the same, if the heart rate exceeds
110 beats per minute. If the heart rate still exceeds 110 beats per minute at the
beginning of the next rest period, shorten the following work cycle by one-
third.
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Preventing heat stress is particularly important because once someone suffers from
heat stroke or heat exhaustion, that person may be predisposed to additional heat
injuries.' To avoid heat stress, the following steps may be taken:
· Modify work/rest schedules according to monitoring requirements, and
mandate slowdowns as needed.
· Alternate personnel assigned to particular tasks to minimize over stress at
one job function.
· Add additional persons to work team, and work during cooler hours, if
possible.
· .Provide shelter or shaded areas to protect personnel during rest periods.
· Maintain workers body fluids to ensure that the cardiovascular system
functions .adequately by having workers drink 16 ounces of fluid
(preferably water) before beginning work, and urge workers to drink at
least 16 ounces of fluid during each rest period.
· Encourage workers to maintain an optimal level of physical fitness.
An initial work/rest cycle on one hour work and fifteen minutes rest is
recommended for protection of staff when the heat stress hazard is high. The
recommended cycle will be adjusted up or down based upon worker monitoring,
environmental conditions, and the judgement of the site safety officer. At any time
field team members recognize the signs or symptoms of heat stress prior to a
scheduled rest period, they will notify the site safety officer immediately in order
that a rest period can be called.
Some of the signs and symptoms of heat stress are heat rash, heat cramps, heat
exhaustion, and heat stroke. Heat rash is' characterized by a decreasing ability to
tolerate heat and skin irritation and may result from exposure to heat or humid air.
Skin cleanliness and treatment with mild drying lotions are necessary to prevent
infection. Heat cramps are caused by heavy sweating with inadequate electrolyte
replacement and are characterized by muscle spasms and pain in the hands, feet, and
abdomen. Treatment of this disability consists of administering salted liquids orally.
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Heat exhaustion may result form physical exertion in a hot environment when
cardiac output is inadequate to meet increased flow of blood that results from dilation
of. peripheral blood vessels or dehydration. It is distinguished by pale, cool, moist
skin, heavy sweating, dizziness, nausea, and fainting. First aid for heat exhaustion is
as .follows:
1.
3.
4.
5.
Immediately remove victim to support area, or if you are the victim,
proceed to the support area.
Decontaminate, if practical, before entering support area.
Start cooling, but be careful not t° cause a chill.
If conscious and not in shock, give water to drink slowly.
If vomiting, and/or signs and symptoms are not lessening within an
hour, call for emergency help and/or transport victim to emergency
room.
If person is a victim of heat exhaustion, they should not work the
remainder of the day.
The most serious form of heat stress is heat stroke. This is caused when the
tempera.ture regulation fails and the body temperature rises to critical levels.
Immediate action must be taken to cool the body before serious injury and death
occur. Red, hot, usually dry skin, lack of reduced perspiration, nausea, dizziness and
confusion, strong, rapid pulse, and coma are the signs and symptoms of heat stroke.
First aid for heat stroke is as follows:
Immediately move victim to cool, uncontaminated area, the support area,
and remove and dispose of victim's chemical-resistant clothing, if
wearing any.
Cool the Victim raPidly using whatever means necessary. This can
include,, but may not be limited to, removing clothing, fanning, and
placing in water.
3. Do not give drinking water to. victim.
4. Treat for shock, if needed.
Transport the victim to a medical facility immediately for further cooling
and monitoring of body functions.
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· Cold Stress
Cold stress is a particular concern when field activities are performed while the air
temperatures at the site are below 40°F. If winds are blowing at 5 .mph or grater
and/or'the weather· is damp or wet, 'cold stress is even more of a potential hazard.
Donning of appropriate 'clothing, having warm shelter readily available, carefully
scheduling work and rest periods, and monitoring workers' Physical conditions are
precautions that will be taken to prevent 'cold stress.
Cold injury (frostbite and hypothermia) may occur, if cold Stress is not prevented. As
a Preventive-measure, the body core temperature must not drop below 96.8°F. Pain in
the extremities is the first early sign of cold stress. Severe shivering sets in when
the body core temperature drops below 95°F. If this occurs, work will stop
immediately and the affected worker(s) will take a warming break of sufficient
duration that the signs and symptoms of cold stress go away.
Noise
Heavy equipment, such as backhoes, may produce loud noise. The effects of noise can
include, but may not be limited to:
· Distracted, annoyed, or startled workers.
· Physical damage to the ear, pain, and temporary and./or permanent
hearing loss.
· Communication 'interference that may increase potential hazards due to
the inability to warn of dangers and the proper safety precautions to be
taken.
OSHA regUlation 29 CFR part 1910.95 describes an effective hearing conservation
program that' must be administered whenever noise exposures equal or exceed an 8-
hour, time-weighted average sound level of 85 dBA' (decibels on the A-weighted
scale). In addition, if workers are subjected to noise exceeding an 8-hour, time-
weighted average sound level of 90 dBA, feasible administrative or engineering
controls must be utilized.
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Bakersfield College
12 June 19, 1992
Heavy .. Equipment and Excavating
Before beginning any site 'work, the excavator subcontractor will perform a safety
inspection of the excavation equipment. Personnel shall not work with equipment
that they 'judge to be unsafe because of deterioration, missing parts, obvious defects,
or improper use for site .conditions. All equipment shall be bonded and. grounded,
sparkproof, and explosion-resistant, as appropriate.
Operation of backhoes of other heavy equipment in areas with steep embankments
or unstable' ground will be avoided, if possible. The subcontractor will make
appropriate provisions to ensure safe operation of equipment, if it is necessary to
operate equipment in these areas.
ANSI-approved hardhats must be worn at and near the excavator or 'any other heavy
equipment. Since heavy pieces of equipment will be used during excavation, steel-
toed boots/shoes are required during, drilling operations, as well as during operation
of other heavy equipment.
The backhoe must maintain a safe clearance (at least 10 feet) between overhead
utility lines and the excavation machinery at all times.
Underground Utilities
The general engineering contractor will locate all underground utility locations
prior to the starting of excavation activities. Resources used include site plans,
utility companies, and Underground Services Alert (USA). In California, USA must be
contacted at least two, but not more than fourteen, days prior to excavating on public
property.
MEDICAL MONITORING
All Earth Systems Environmental, Inc. (ESE). employees assigned to the sampling
operations must be active participants in ESE Employee Medical Surveillance
Program, which meets the requirements of 29 CFR 1910.120. ESE's program~ requires
employees, assigned to hazardous waste site investigations and remediation to take
pre-assignment, annual, and exit medical examinations. The CHSO will maintain
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Bakersfield College
13 June 19, 1992
current copies of training certificates and statements of medical program
participation for all site personnel.
Work-Rest Schedule
Depending on the prevailing temperature and humidity, a work-rest schedule may be
necessary. Duration and frequency will be at the discretion of the excavator and/or
site supervisor. A supply of potable water will be kept available near the site.
Safety Training
Field personnel must receive 40-hour basic health and safety training, designed to
comply, with the. OSHA/EPA requirements for hazardous waste operations and eight
hours of annual refresher as set forth in 29 CFR 1910.120, and attend a site-specific
safety orientation conducted by the project supervisor. The briefing shall include
the following:
1 ) A briefing on the work to be performed and the work schedule
2) A discussion of the potential chemical and physical hazards associated with
the work to be performed
3) Hazard identification
4) Purpose and limitations of personal protective equipment
5) Decontamination and emergency response procedures
6) Proper on-site conduct.
EMERGENCY CONTACT AND PROCEDURES
Contacts
Should any. situation or unplanned occurrence require outside or support services,
the appropriate contact from the following should be made:
Agency
Ambulance ' dispatcher
City Fire Department dispatcher
Police dispatcher
Hazardous Materials Division Joe Dunwoody
Person to Contact
Kern Medical
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Center dispatcher
Telephone
911
911
911
(805) 326-3911
(805)326-2620
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1 4 'June 19, 1992
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To reach Kern Medical Center, take Mount Vernon Avenue south two miles to Flower
Street and turn right; take Flower Street west I/8 mile following the signs to the
emergency entrance of the hospital which will be on the right (north side of Flower
Street) at 1830 Flower Street in Bakersfield.
Paramedics should be summoned in the event of a serious injury; they will arrange to
transport the victim to the nearest appropriate facility. A first aid kit will be
available at the site for use in case of minor injuries. If anyone receives a splash or
particle in the eye, the portable eyewash will be used to irrigate the eye for 15
minutes. If direct contact with contaminants occurs, affected skin areas should be
washed immediately with soap and water.
At least one person at the site will have current certification in First Aid and CPR.
SITE LAYOUT
The level of hazard associated with the work to be performed does not require
dividing the site into formal exclusion, contamination reduction, and support zones.
However, care will be taken to avoid breathing vaporized gasoline fuel.
CONTAMINATION MONITORING
Organic vapor monitoring of the ambient air shall be conducted at reasonable
intervals as determined by project personnel. The purpose of monitoring is to
determine if vapor levels in the work area are high enough to warrant personal
protection measures or evacuation of the site.
Organic vapor levels should be monitored using an OVM photoionization meter with
an 11.7 eV lamp (probe), calibrated to benzene or a Foxboro® OVA (organic vapor
analyzer) 108 flame-ionization detector calibrated for non-methane hydrocarbons.
Background should be determined by taking readings before sampling begins. All
readings, background and others, must be recorded. If any continuous measurement
is observed to be 10 times over background levels in the work area, respiratory
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Bakersfield College
1 5 Jm~e 19, 1992
orotective action will be reo. uired.
geologists or engineers discretion.
Lesser _~rotective measures are at the field
DECONTAMINATION
Before leaving the site/work area, r~ersonnel must remove all protective eauir~ment
and wash their hands, faces and necks. These washing procedures shall be observed
heft)re all work breaks.
To minimize the rmtential for cross-contamination, all excavation eouir~ment shall be
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decontaminated before the start of drilling, between borings, and before removal
from the site. Samr~ling equipment shall be decontaminated before sampling and
between samtAine with washine with laboratory-grade detergent, a water rinse and
a contaminant-free distilled water rinse.
EMERGENCY PROCEDURES
Emergency conditions 'are considered to exist if:
* Any member of the field crew is involved in an accident, experiences any
adverse effects or' symptoms of exposure while on-site: or
* A condition is discovered that suggests the existence of a situation more
hazardous than. antici.oated.
In the event of an on-site emergency, the ~rocedures described below are to be
immediately followed.
Personnel on-site should 'use the "buddy system" (stay in ~ai~'s]. In the .event of
a communication breakdown, i.e. radio malfunction or if radios are not
available. "buddies" should, use prearranged hand sienals or other means of
emergency signals as follows:
Hand gripping throat - out of air, can't breath.
Grip partner's wrist or r~lace both hands around waist
immediately, no debate!
leave area
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Bakersfield College
June 19, _1992
Hands on top of head - need assistance
Thumbs down no, negative.
The field engineer or geologist will establish eme. rgency evacuation routes and
will make all project r~ersonnel aware of these routes prior to the first on-site
activities. In the event of an emergency, selection other escape route will be
based on the nature of the emergency and wind direction.
o
Visual contact should be maintained between "buddies" on-site, with the team
remaining i.n close proximity in order to assist each other in case of
emergencies.
In the event that any member of the field crew exr~eriences any adverse effects
of symptoms of exposure while on site, the entire field crew should immediately
halt work and follow the instructions provided the project sur~ervisor.
Wind indicators visible to all on-site personnel should be provided by the
project supervisor to indicate possible routes for upwind escape.
The discovery of any condition that would suggest the existence of a situation
more hazardous than anticipated should result in the evacuation of the field
team and re-evaluation of the hazard and the level of protection required.
In the event an should accident occur, it will be necessary to complete an
Accident Report Form with the company Safety Officer.
STANDARD SAFE-WORK PRACTICES
General
Eating, drinking, chewing tobacco and smoking are prohibited in the
contaminated or potentially contaminated area of where the possibility for the
transfer of contamination exists.
Avoid contact with potentially contaminated substances. Do not walk through
puddles, pools, mud, etc. Avoid, whenever possible, kneeling on the ground,
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Bakersfield College
17 June 19, 1992
leaning or sitting on equipment or ground. Do not place monitoring equipment
on potentially contaminated surfaces (i.e., ground, etc.).
All field crew members should be alert to the presence of strong, irritating or
nauseating odors that could indicate a potentially dangerous situation. Other
senses should be kept alert to possible hazards as well.
Precaution should be taken to prevent spillage.
occur, the liquid should be contained.
Prevent splashing of the contaminated liquids.
In the event a spillage should
Field crew members shall be familiar with the physical characteristics of
investigations, including the following:
Wind direction in relation to ground-zero, area.
Accessibility. to associates, equipment, and vehicles.
Communications.
Hot Zone (areas of known or suspected contamination).
Site access.
Nearest water sources.
The number of personnel and equipment in the contaminated area should be
minimized but only to the extent consistent with work-force requirements of
safe site operations.
All -wastes generated during Earth Systems Environmental, Inc. and/or
subcontractor activities at the site remain the property of the client.
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PLAN ACCEPTANCE FORM
The Plan Acceptance Form (attached) should be filled out by all employees working
on the site and retained in the job file.
Corporate Health & Safety Officer Robert Mohle (805) 541-5983
Site Safety. Officer
Tim Martin
(805) 836-0901 - office
(209) 784-5045 - home
Project-Site Safety Plan prepared by Mark Maeareee in conjunction with the
Corporate Health & Safety Officer.
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The undersigned have read and understood the attached safety plan and agree
to comply with the provisions of this plan.
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