The following temperature thresholds trigger specific Cal/OSHA-required protective measures. All supervisors must monitor temperature throughout the shift using a reliable source (e.g., National Weather Service, OSHA-NIOSH Heat Index app, on-site thermometer).

Stealth Construction Water Procedures

• Water is provided free of charge at every Stealth jobsite. Employees are encouraged to drink small amounts frequently (one cup every 15 minutes) rather than large amounts infrequently.
• Water containers are placed as close as practicable to the work area and shade area, and never in direct sunlight.
• Water is suitably cool — under 60°F when feasible. Ice is provided when temperatures exceed 90°F.
• Single-use cups or individual water bottles are provided. Communal drinking from a single container is prohibited.
• Each crew begins the shift with a minimum of 2 quarts of water per employee for the first 2 hours, plus continuous replenishment thereafter.
• The foreman/superintendent is responsible for checking water levels every 2 hours and arranging refill before any container reaches empty.
• Supervisors actively remind workers to drink water throughout the shift, not just on breaks.

Site-Specific Water Plan

Stealth Construction Shade Procedures

• Shade structures (pop-up canopies, EZ-Ups, scaffold tarps, or equivalent) are erected and open before temperature reaches 80°F on the workday.
• Shade is sized so that all employees on a rest break can sit fully shaded, in a normal posture, without touching one another.
• Shade is located as close as practicable to the work area. When work moves, shade moves with it.
• Employees may take a preventative cool-down rest of at least 5 minutes in the shade whenever they feel the need to do so to protect themselves from overheating. They are not required to wait for a scheduled break and will not be discouraged from taking this rest.
• Any employee taking a cool-down rest is observed by a supervisor or designee for signs of heat illness, asked if they are experiencing symptoms, and not sent back to work until symptoms have subsided (minimum 5 minutes).
• Below 80°F, shade is provided either present or made available within 5 minutes upon employee request.

Site-Specific Shade Plan

Mandatory High-Heat Actions (≥95°F)

• Effective communication: Voice, observation, or electronic means is maintained at all times so employees can contact a supervisor when necessary. If cell reception is unreliable at the worksite, an alternate means is established before the shift starts.
• Observation for heat illness: Supervisor regularly observes (no more than 20 employees per supervisor for direct observation), OR a mandatory buddy system is implemented where workers monitor each other.
• Verbal reminders: Supervisors remind employees throughout the shift to drink plenty of water.
• Designated EMS callers: One or more employees per worksite are designated and authorized to call emergency medical services. All other workers may call when no designated person is available.
• Pre-shift tailgate meeting: Before work begins on any day temperatures will reach 95°F, a pre-shift meeting is held covering the day's high-heat procedures, the importance of drinking water, the right to take cool-down rest, and how to recognize heat illness.
• Mandatory cool-down rest: Each employee takes a minimum 10-minute net preventative cool-down rest every 2 hours. This may be combined with required meal/rest periods. If the shift extends past 8 hours, additional cool-down rest is required at the end of the 8th hour, and again at the 10th hour, and so on.

Stealth Construction Acclimatization Procedures

• New employees assigned to high-heat areas are closely observed by a supervisor or designee for the first 14 days of their employment.
• Returning employees who have been away from heat work for more than 14 consecutive days are treated as new employees and re-acclimatized.
• During a heat wave (any day with predicted high of at least 80°F AND at least 10°F above the average high of the preceding five days), all employees are closely observed regardless of tenure.
• For new or returning workers, work duration may be progressively increased: 20% Day 1, 40% Day 2, 60% Day 3, 80% Day 4, 100% Day 5 and after. Where this is not practicable, supervision is intensified instead.
• Workers are explicitly informed that they should not work through symptoms of heat illness, and that taking time to acclimatize is a protected right.
• All acclimatization observations are logged on the Acclimatization tab of this document.

Signs & Symptoms of Heat Illness

Emergency Response Procedures

• Any employee showing signs of possible heat illness is provided immediate cool-down rest in shade or a cool area, monitored, and not left alone.
• If symptoms do not subside within a few minutes, OR if symptoms suggest heat stroke (confusion, loss of consciousness, hot/dry skin, vomiting, seizures), EMS is contacted IMMEDIATELY (call 911).
• The designated emergency contact on site ensures clear, precise directions to the work location are available for emergency responders, including landmarks, gate codes, and the best access route.
• If the work site is remote and EMS response time is extended, Stealth maintains a written transportation plan to bring the employee to a point where EMS can reach them.
• All heat illness incidents — including those that did not require EMS — are logged on the Incident tab of this document.

Site-Specific Emergency Information

Required Training Topics (All 9 Cal/OSHA Subjects)

• Environmental and personal risk factors for heat illness, including dehydration, prior heat illness, alcohol/caffeine use, medications, age, and prior medical conditions.
• The employer's procedures for complying with §3395 (water, shade, high-heat, emergency response, acclimatization).
• The importance of frequent water consumption — small amounts (about one quart per hour) and frequently, before thirst sets in.
• The importance of acclimatization and how Stealth implements it for new and returning workers.
• The different types of heat illness (cramps, syncope, exhaustion, stroke), their common signs and symptoms, and that heat illness can progress quickly from mild to life-threatening.
• The importance of immediately reporting symptoms — both their own and those of co-workers — to the supervisor.
• The employer's procedures for responding to symptoms of possible heat illness, including how EMS will be contacted.
• The employer's procedures for contacting EMS and providing clear directions to the worksite.
• The employer's procedures for ensuring that supervisors are trained on all the above plus weather monitoring and high-heat tracking.

Training records are logged on the Training tab of this document. Training is documented at hire, before first heat exposure, and re-administered annually at the start of the heat season (typically April for Southern California).