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' Inr THE <br /> ,a MARK <br /> GROUP <br /> ENGINEERS a GEOLOGISTS, INC Site-Specific Health and Safety Plan <br /> COMMUNICATIONS <br /> ' Field Phone Aphone will be available at the fob site Location Stockton Scavenger Association Office <br /> Field Radio Frequency- Location <br /> STANDARD HAND SIGNALS RESPONSE <br /> Hand on face Don Respirator <br /> Hand gripping throat Out of air, can't breathe <br /> Grip partner's wrist Leave restricted work area immediately <br /> to predetermined area upwind, no debate <br />' Both hands on waist Leave area immediately <br /> Hand on top of head Need assistance <br /> Thumb upward OK, positive confirmed, understood <br /> Thumbs down No, negative, don't understand <br /> Open hand, palm down <br />' drawn across throat Stop <br /> SIREN/HORN BLASTS SIGNALS NIA <br /> 1 <br />