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<br /> 180 E.Weber Street July 21,2014 180 E.Wcber Street July 21,2014
<br /> Stockton.California Project No.402132005 Stockton,California Project No.402132005
<br /> exercises by all field personnel at the start of each shift will be encouraged by the 4.2.2. Overhead Electrical Hazards
<br /> SHSO. Overhead cables may be present on-site.A detailed hazard analysis swill be prepared by
<br /> the subcontractor prior to operating heavy equipment(exraamors and cranes)urder-
<br /> The s maiGeneral Physical t awards neath or within 20 feet ofthe maximum reach of the equipment.
<br /> The site may include areas that am paddy drained,rough or uneven terrain,depressed
<br /> aaas,protruding objecisr and impalement hazards.The SHSO will assure that a careful 4.2.3• Pipelines
<br /> pre-work wwalkovor is made of all work anus and potential access or ogress routes.Un- Buried pipelines oonimmi g natural gas and petroleum fuels am common on industrial
<br /> safe arras may be flagged or taped by the SHSO and will be identified to all personnel. sites_These pipelines present another source of a potential fine and explosion hazard.
<br /> When locations of buried lines arc suspected or uncertain,hand excavation will alssa_vs
<br /> 4.1.7. Solar Radiation be performed until the utility is located orthe area is cleared.
<br /> `Hee SHSO will encourage Progaam personnel working out of doors to utifim covering.
<br /> or sunblock preparations to minimize die harmful uffects of the sum's rays on the skin_ 43. Chemical Hazards
<br /> 4.2. Industrial Hazards
<br /> This section describes the toxicological(health)hazards associated with exposure to organic
<br /> and.inorganic chemicals and metals during the project,.Chemicals which ani;expected to be
<br /> Project field activities m this site may expose personnel to various industrial hazards.The encountcrad are discussed in the following sections.
<br /> following section presents a summary of the industrial hazards that may be encountered and
<br /> general methods that will be utilized bythe employees to assure worker safety. In dry,and desert conditions,exposer:may occur principally by inhalation of contaminated
<br /> particulates.Exposure to vapors an occur if trapped volatiles arc exposed to the high heat
<br /> 4.2.1. Soil EzcavationlTrenrhing conditions once the mareria3 is exposed to the atmosphere,
<br /> Excavation of impacted soil presents multiple hazards to workers including chemical
<br /> exposure,fire and explosion hazards,confined space,and exposure to hazards of can- 4.3.1. Petroleum Hydrocarbons
<br /> tacdng unidentified energized utility contact All work amus will be cicared by the Total permlcum hydrocarbons(TPH)is a term used to dewnba a large family ofsevcral
<br /> independent utility laminrs poor to soil-intrusive work or movement of heavy equip- hundred chemical compounds tial originate from crude oil.TPH is a mixture of chemi-
<br /> ment into or through utility comdors,and on-site utilities M11 be shut off and cals,but thev are all made primarily from hydrocarbons.Some chemicals that may be
<br /> disconnected prior to excavation activities.A Competent person will be on-site during found in TPI1 are hexane,jet fuels,mineral oils,benzene,toluene,xylenes,naphthalene.
<br /> all excavation activities to identify potential safety issues associated with trenching and and fluomne.a;well as other petroleum products and gasoline components.Sonne of
<br /> oxca.vation_Ninyo&Moore personnel will not enter the excavation under any circum- the TPH compounds Can affect}uur Central nervous system.One compound cat cause
<br /> staoees. headaches and dizziness at high levels in the air.Another compound can Cause a none
<br /> disorder called"peripheral neuropathy,"consisting of numbness in the feet and legs_
<br /> Otter 7TH compounds can cause effects on the blood,immune system,lungs,skin,and
<br /> um� ewes_
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<br /> I80 E.Weber Street July 21,2014 180 E.Weber Street Judy 21,2014
<br /> Stockton,California Project No.402132005 Stockton,California Project No.402132W5
<br /> Animal studies have shown effacts on the lungs,central nervous system,liver,and kid- ity to operate machinery.The low toxicity of thew materials is not a basis for allowing
<br /> ney from exposure to TPH compeunds.Some TPH Compounds have also been showm to cxposuros in excess of established limits.
<br /> affect reproduction and the developing fetus in animals.The International Accncv for
<br /> Research on Caner(IARC)has detemimed that one TPH compound(ben—)is car- 43.4. Flammability
<br /> einegcnic to hanans,IARC has determined that other TPH Compounds(benzo(aJpymnc There is a possibility of Flammable vapors from high concentrations of volatile petm-
<br /> and gasoline)are probable and possible carcinogens to humans.Most of the other TPH lellm hydrocarbons in groundwater or from a layer of fire product that may exist at the
<br /> compounds are cunsidcmd not classifiable by IARC site.Accordingly,monitoring will be conducted to identify locations where flammable
<br /> vapors may ignite from sparksgencrated by equipment.
<br /> 43.2. Benzene
<br /> Benzene'es a common constituent of motor fuels,aviation gasoline,and some indusinal 43.5. Lead
<br /> solvents_A known human Carcinogen,bennne is the principal eancem and the basis for Load may be encountered as a contaminant of soil as a result of spills or leakage of lead
<br /> establishing the action levels for continuous monitoring equipment in the vicinity of additives to motor fuels.Lead is a toxic heavy metal and a suspected carcinogen that
<br /> gasoline and other light distillow products.Continuous organic vapor monitoring will may he encountered in inorganic or organic forms.Where lead is identified as present in
<br /> not detect benzene specifically;therefore,the action level is based upon the ourecrva- suffaeiendy high concentrations,work trill he conducted in accordance with the appli-
<br /> live assumption that the benzene content of the volatile mixture is less than 20 percent cable OSHA standards.
<br /> The action level for n:spindory protection may be revised once the airborne eontuni-
<br /> nant environment is fully characterized.The use of benzene-specific detector lubes or 4.3.6. Other Heavy Metals
<br /> portable gas chromatography ma)he used to quantify benzene concentrations, A variety of heavy mauls am encountered as contaminants at mdnsiriai-typo sites.
<br /> Some heavy metals are highly toxic.others arc also recognized human carcinogens.Bo-
<br /> In the event that the pacwrce of banmoc is Confirmed to be above the OSHA action Cause these materials am not wclatilz unless highly heated,Control by proper use of
<br /> level,guidelines act Ranh in the OSHA document,Benma,Regulated Areas,will be Personal Protective Equipment(PPE)and personnel hygiene practices will prevent sig-
<br /> implementednificaat exposure to heavy mctals.
<br /> 4.33. Non.aromatic Hydrocarbons
<br /> The category of nonaromatic hydrocarbons refers to a variety of volatile and wmivola-
<br /> 4.4. Biological Hazards
<br /> The SHSO will seven the arca for biological hazards during the initial site visit and will dis-
<br /> tile compounds,including simple hvdmcarbwts such at propane,pasnfanc,and octane.
<br /> 'l ucsc unspe�sified Compounds are present in petroleum hydrocarbon mixtures and may cuss any problems with installation personnel during the pmwork review. Multiple
<br /> biological hazards arc present at the site,The most cornnson hazards anticipated are des-
<br /> exist as gas,vapor.liquid,or some combination.The compounds arc generally of lowv
<br /> toxicity;howwcvcr,they produce a narcotic Cussed below.cotic effect at moderate concentrations.F%posum
<br /> to nvinummatic hydrocarbons at moderate concium-inions may affect the operator's abil-
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