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Site Health and Safety Plan
<br />19133 East Liberty Road, Clements, California
<br />August 16, 2022
<br />Page 7
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<br />Sharp Environmental Technologies, Inc.
<br />In California, Permissible exposure limits (PELs) for COCs are found in CCR Title 8, Section 5155. PELs
<br />refer to the maximum allowable airborne concentrations of hazardous substances and represent
<br />concentrations at which it is believed that nearly all the workers may be repeatedly exposed, eight
<br />hours per day, for a 40-hour workweek, without adverse effect. However, due to the wide variation in
<br />individual susceptibility, a small number of workers may experience discomfort to some or all of these
<br />chemical substances at concentrations equal to or below the PEL. A still smaller percentage of persons
<br />may be affected more seriously from exposures at or below the PEL due to aggravation of a pre-
<br />existing condition or development of an occupational illness. The majority of PELs are expressed as a
<br />time-weighted average based on an eight-hour workday, five days a week or 40-hour workweek. The
<br />PEL is an average exposure concentration spread over a 480-minute exposure period. CAL/OSHA also
<br />has established short-term exposure limits (STEL) for certain substances that typically have strong
<br />irritant properties. STELs are based on a 15-minute average exposure limit. In addition some
<br />substances have ceiling exposure limits that establish exposure limits that cannot be exceeded at any
<br />time. In many cases, a specific chemical hazard will have an eight-hour PEL, a 15-minute STEL and a
<br />ceiling limit. Certain substances, which can readily enter the body via skin contact, are denoted by
<br />CAL/OSHA with "S" notation referring to skin absorption. The same notations and standards are used
<br />in this SHSP.
<br />The following table lists the COCs associated with the site operations covered by this SHSP and
<br />includes routes of exposure, symptoms, PELs, immediately dangerous to life and health (IDLH)
<br />concentrations, and lower explosive limits (LEL).
<br />Chemical
<br />Name
<br />Route of Exposure Symptoms Target Organs
<br />Total petroleum
<br />hydrocarbons
<br />(TPH)
<br />Inhalation/ingestion/ skin
<br />absorption/skin or eye
<br />contact
<br />Dizziness, drowsiness,
<br />headache, nausea; irritation of
<br />the eyes, nose, throat; dry
<br />cracked skin
<br />Skin, eyes, respiratory
<br />system, central nervous
<br />system
<br />Benzene Inhalation/skin
<br />absorption/ingestion/
<br />skin or eye contact
<br />Giddiness, headache, nausea,
<br />staggered gait, fatigue, anorexia,
<br />lassitude, dermatitis, bone
<br />marrow depression (carcinogen)
<br />Blood, central nervous
<br />system, skin, bone marrow,
<br />eyes, respiratory system
<br />Toluene Inhalation/ingestion/ skin
<br />absorption/skin or eye
<br />contact
<br />Fatigue, weakness; confusion,
<br />euphoria, dizziness, headache;
<br />dilated pupils, lacrimation;
<br />nervousness, muscle fatigue;
<br />insomnia; paresthesia; dermatitis
<br />Central nervous system,
<br />liver, kidneys, skin
<br />Ethylbenzene Inhalation/ingestion Irritation of the eyes, mucous
<br />membrane, headache; dermatitis;
<br />irritation of the eyes,
<br />Eyes, upper respiratory
<br />system, skin, central
<br />nervous system
<br />Xylenes Inhalation/ingestion/ skin
<br />absorption/skin or eye
<br />contact
<br />Dizziness, excitement
<br />drowsiness, incoordination,
<br />staggering gait; irritation of the
<br />eyes, nose, throat; corneal
<br />vacuolization; anorexia, nausea,
<br />vomit, abdominal pain; dermatitis
<br />Central nervous system,
<br />eyes, GI tract, blood, liver,
<br />kidneys, skin
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