u2033 18 l 18 r preferably comprising the basic structure of our containment housing 17 are shown in fig2 arranged in a somewhat exploded manner for greater visual clarity the preferably planar grating ramp 21 is shown here elevated substantially in the manner by which it is to be dislodged from within the uppermost framing of the containment housing 17 and manually withdrawn through mouth 10 u2033 shown here phantom outlined only of an exemplified existing concrete curb inlet this is the first step enabling maintenance workers to thereby gain easy access to the containment housing 39 s confines so as to next proceed to remove the exemplified disposable hc absorbent unit 23 preferably suspended via lanyard hooks 23 u2032 within the forwardmost situated stage 2 ref 28 b of fig1 sediment chamber 17 u2032 with the preferably combined bypass cover 21 c and aperture 21 u2032 of grating ramp 21 and thereunder disposable absorbent unit 23 thus both temporarily removed a maintenance worker can thereby readily access and clean out the lower confines of the three generally employed fig1 chambers 17 u2032 17 u2033 17 u00d7 chambers 17 u2033 and 17 x being regarded as options to improve the pollutant trap 39 s effectiveness with a commercially available wand tipped vacuum hose connected to an industrial vacuum cleaner usually built in to their adjacently parked maintenance truck not.