A320 captain reported a ground gate return due to flight attendant notification of physiological iss...

Narrative:

We started both engines after push back. After second engine start we were cleared to taxi. Approximately 2-3 minutes into our taxi; the number 2 and 3 fas called the flight deck to tell us there was a strong odor of 'gas'. They said it seemed to be dissipating however one of the fas felt dizzy and was getting a headache. We requested to pull over and evaluate the situation. I spoke to the fas again and I asked them if it had gotten better and they said yes; but that they said one of them still felt dizzy. I spoke with the [chief pilot] and discussed my concerns continuing the flight with an flight attendant that is complaining of a headache and being dizzy coupled with 1/8 mile visibility and a takeoff alternate. He asked if I would call the flight attendant back and confirm he was no 'fit for duty'; which I did. The flight attendant confirmed he was not fit so we returned to the gate; deplaned; and flight attendant 2 and 3 were taken to the hospital for evaluation.

Original NASA ASRS Text

Title: A320 Captain reported a ground gate return due to Flight Attendant notification of physiological issues experienced from cabin fumes. Two flight attendants were replaced and treated at local hospital.

Narrative: We started both engines after push back. After second engine start we were cleared to taxi. Approximately 2-3 minutes into our taxi; the number 2 and 3 FAs called the flight deck to tell us there was a strong odor of 'gas'. They said it seemed to be dissipating however one of the FAs felt dizzy and was getting a headache. We requested to pull over and evaluate the situation. I spoke to the FAs again and I asked them if it had gotten better and they said yes; but that they said one of them still felt dizzy. I spoke with the [Chief Pilot] and discussed my concerns continuing the flight with an FA that is complaining of a headache and being dizzy coupled with 1/8 mile visibility and a takeoff alternate. He asked if I would call the FA back and confirm he was no 'fit for duty'; which I did. The FA confirmed he was not fit so we returned to the gate; deplaned; and FA 2 and 3 were taken to the hospital for evaluation.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1716834
Time
Date	202001
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Flight Deck / Cabin / Aircraft Event Smoke / Fire / Fumes / Odor Flight Deck / Cabin / Aircraft Event Illness

A320 captain reported a ground gate return due to flight attendant notification of physiological issues experienced from cabin fumes. Two flight attendants were replaced and treated at local hospital.