SUBSURFACE DISPOSAL OF STORM RUNOFF

INJECTION OF STORM RUNOFF INTO THE BASAL GROUNDWATER BODY FROM THE TOWN OF KAHULUI, MAUI, HAWAII, WILL OCCUR IN ZONES BELOW THE FRESHWATER LENS. THE QUALITY OF THE STORM RUNOFF GENERALLY IS GOOD, WITH LOW DISSOLVED SOLIDS (DS) AND LOW CHLORIDE CONCENTRATIONS. THE GENERAL EFFECT OF INJECTION WILL BE A DECREASE IN DS OF THE GROUNDWATER NEAR THE WELLS. PUMPING AND INJECTION TESTS OF THE COMPLETED INJECTION WELLS INDICATE THAT THE DISPOSAL WELLS SHOULD BE ABLE TO INJECT AT RATES IN EXCESS OF 5,500 GPM (20,800 L/M) IF SIGNIFICANT CLOGGING FROM SEDIMENT DOES NOT OCCUR AND IF HYDRAULIC INTERFERENCE AMONG THE FOUR WELLS OPERATING SIMULTANEOUSLY IS NOT SIGNIFICANT. /AUTHOR/