Scott L. Ed P. Chris S. 

4/27/15 the crew worked on crevice and tube cleaning ending 2.3 meters north of HNW-4-016. Tested clean areas (posted on this report) and began moving lights and cords to the next section. Vacuumed support tubes and sprayed bleach/water solution.

4/28/15 continued vacuuming and began tube cleaning. Cleaned 55 meters ending 17.5 meters north of HNW-4-018.