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HomeMy WebLinkAboutHAZ-WASTE PLAN 6/19/1992Earth Systems Environmental, A Member of The Earth Systems Group Inc. I I I i I I I I I I I I I I i I I 1 I 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 I I I I I I I I I I I I '1 I '1 I I I 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-. I I Bakersfield College 2 June 19, 1991 I I I I i I I I I. I I I i I I I I 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 I I I I I I I I I I I I I I I I I I I 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 I I I I I I I I I I I I I I I I I I I 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 I I I I I I I I ! I I I I I I I I I ! 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 I I I I I I I I I I I I I I I I I I 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 I I I I I I I I I I I I I I I I I I I 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 1 I Bakersfield College 8 June 19, 1991 I I I I I I I I I I I I I I I I I 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 I I Bakersfield College 9 June 19, 1991 I i I I I I I I I I I I I I I I I 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 I I I I I I I I i I I I I I I I I I 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 I Bakersfield College 1 1 Sune 19, 1991 ' 0 I 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 1 I I~BAK I I I I I I EB-8191-2 9206-E058.WP i ~.~..~"'~// '"~.1 ~N~_~i~~~,,~~/ H*sromC~L ~ .¢' //~'///,.-..._ o: ri //';-,~ / -- '"' ~ · - ~,ck v Poi,il ~:c i , ' /~ ~ ~ ,, ~ ~ s,,,,,~,, ~,,, '.E~,,,;~:~:~ a.~Ur~/ ~J~ Unive, s, ty Al ~ J ~ NOBL¢ WASHING r ...... e I. - -- c ~-- -3 .... J Jefhev o Street ~ ~ ~ SCHOOL ~ ~ _ . .... '='o- ~ ~] : ~ ' - ~ c ~ - = - ~ ~ Bm~ham - . ' '~ ~ ~i~ ~ ~ o~ 5  Eadh Systems T ITL E Figure A ~m~r of The EaCh Syste~ Grip s~o~ UcD;vm D.~. S~.~ a Bakersfield. CA 93313 (805) 836-~0~ JOB NO. F~ ~6-0911 ~ ~ ~r-7.~ .'~  EaCh Systems TITLE Figure ,nc. A Mem~ of The EaCh Systems Gro~ 670t McOivi. Drive, Suite S Bakersfield, CA 93313 (805) 836-0~1 JO8 NO. I I I I I I I I I I I I I i I I I I I APPENDIX A SITE HEALTH' AND SAFETY PLAN I I I I I ! I I I I I I I I I I I I I 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 I I Bakersfield College 2 June 19, 1992 I I I I I I I I I I I I I I 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 I I i I I i I ! I' I I 1 i I I' I I I 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 I i I i' ! I I I I I I I i I I, Bakersfield College 4 June 19, 1992 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 EB-8191-2 9206-E058.WP I i Bakersfield College 5 June 19, 1992 I I I I ! I I i I I I I I I I I I- 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. 'EB-8191-2 9206-E058.WP I 1 Bakersfield College 6 June 19, 1992 I I I I 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 I I ! I i I I I I I I I I 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 EB-8191-2 9206-E058.WP I I Bakersfield College 7 June 19, 1992 I I I I I I I I I I I I I i I I I 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. EB-8191-2 9206-E058.WP Bakersfield College 8 June 19, 1992 I I I I I I I i I I I I I I I I I 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. EB-8191-2 9206-E058.WP I I Bakersfield College 9 June 19, 1992 I I I I I I I I I I I I I I I I I 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. EB-8191-2 9206-E058.WP I I Bakersfield College 10 June 19, 1992 I I I I I ! I I I I i I I I I I I 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. EB-8t91-2 9206-E058.WP I i Bakersfield College 1 1 June 19~ '1992 I I I I I I I I I i I I I I I i I · 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. EB-819t-2 9206-E058.WP I I I I I I i I I I I I I I I I I I I 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 EB-8191-2 9206-E058.WP I I I I I I I I I I I I I I I I I I, I 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 EB-8191-2 Center dispatcher Telephone 911 911 911 (805) 326-3911 (805)326-2620 9206-E058.WP I I Bakersfield College 1 4 'June 19, 1992 I I I I I I I I I I I I I I I' I I 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 EB-8191-2 9206-E058.WP I I I I I I I I I I I I ! I I I I I I 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 ~ 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 EB-8191-2 9206-E058.WP I I I I I I I I I I I I i i I I I I I 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, EB-8191-2 9206-E058.WP I I I I I I I I I I I I I i I I I i I 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. EB-8t91-2 9206-E058.WP I I Bakersfield College 18 June 19, 1992 I I I I I I I I I I I I I I i I I 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. EB-8t91-2 9206-E058.WP I I Bakersfield College 19 June 19, 1992 The undersigned have read and understood the attached safety plan and agree to comply with the provisions of this plan. I Name Date Name Date I I Position~ Position Name Date Name Date I Position Position I Name Date Name Date I Position Position I Name Date Name Date I I Position Position Name Date Name Date I I I I Position Position EB-8191-2 9206-E058.WP