Mass outflow rates and loading factors are typically used to infer the quenching potential of galactic-scale outflows .
However , these generally rely on observations of a single gas phase which can severely underestimate the total ejected gas mass .
To address this , we use observations of high mass ( \geqslant 10 ^ { 10 } M _ { \odot } ) , normal star-forming galaxies at z \sim 0 from the MaNGA , xCOLD GASS , xGASS and ALFALFA surveys and a stacking of Na D , H \alpha , CO ( 1-0 ) and H I 21cm tracers with the aim of placing constraints on an average , total mass outflow rate and loading factor .
We find detections of outflows in both neutral and ionised gas tracers , with no detections in stacks of molecular or atomic gas emission .
Modelling of the outflow components reveals velocities of | v _ { \text { NaD } } | =131 km s ^ { -1 } and | v _ { \text { H } \alpha } | =439 km s ^ { -1 } and outflow rates of \dot { M } _ { \text { NaD } } =7.55 M _ { \odot } yr ^ { -1 } and \dot { M } _ { \text { H } \alpha } =0.10 M _ { \odot } yr ^ { -1 } for neutral and ionised gas , respectively .
Assuming a molecular/atomic outflow velocity of 200 km s ^ { -1 } , we derive upper limits of \dot { M } _ { \text { CO } } < 19.43 M _ { \odot } yr ^ { -1 } and \dot { M } _ { \text { HI } } < 26.72 M _ { \odot } yr ^ { -1 } for the molecular and atomic gas , respectively .
Combining the detections and upper limits , we find average total outflow rates of \dot { M } _ { \text { tot } } \lesssim 27 M _ { \odot } yr ^ { -1 } and a loading factor of \eta _ { \text { tot } } \lesssim 6.39 , with molecular gas likely contributing \lesssim 72 % of the total mass outflow rate , and neutral and ionised gas contributing \sim 28 % and < 1 % , respectively .
Our results suggest that , to first order , a degree of quenching via ejective feedback could occur in normal galaxies when considering all gas phases , even in the absence of an AGN .