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Victoria University Antarctic Research Expedition Science and Logistics Reports 2002-03: VUWAE 47

*ENVIRONMENTAL IMPACT

*ENVIRONMENTAL IMPACT

*Sites Visited

Site name McMurdo Ice Shelf HWD-1
Site location (coordinates/description) 77 53.308′S 167 05.067′E
Dates occupied 3 - 23 Jan. 2003
Total days (or hours) at site 20 Days
Maximum number of people at site 15
Total person-days (or person-hours) at site (see SB Ops report for person nights)
Main activity undertaken Hot Water drilling, sub ice oceanography and sea floor sampling

*Sites Visited

Site name McMurdo Ice Shelf HWD-1
Site location (coordinates/description) 77 5.111′S 167 20.209′E
Dates occupied 23 Jan. - 5 Feb. 2003
Total days (or hours) at site 13 days
Maximum number of people at site 15
Total person-days (or person-hours) at site (see SB Ops report for person nights)page 11
Main activity undertaken Hot Water drilling, sub ice oceanography and sea floor sampling

*Sites Visited

Site name Sea ice BB site
Site location (coordinates/description) 77 5.111′S 167 20.209′E (approx 4.5 km south of Scott Base)
Dates occupied Instrument: 10 Jan.-3 Feb. 2003
Total days (or hours) at site Instrument deployment: 23 days
Maximum number of people at site 6
Total person-days (or person-hours) at site Approx. 300 hours
Main activity undertaken Hot Water drilling, sub ice oceanography and sea floor sampling

*Sites Visited

Site name Gonville and Caius Range
Site location (coordinates/description)
Dates occupied
Total days (or hours) at site
Maximum number of people at site
Total person-days (or person-hours) at site
Main activity undertaken Geological sampling

*Sites Visited

Site name New Harbour (Rig Point)
Site location (coordinates/description) 77 32.686′S 163 42.241′E
Dates occupied
Total days (or hours) at site 1 hour
Maximum number of people at site 4
Total person-days (or person-hours) at site
Main activity undertaken Locate for possible ANDRILL land storage site.

*Geological Material

Location 77 53.308′S 167 05.067′E
Specimen type Sea floor sediments
Quantity (kg) 30 kg max.

*Geological Material

Location 77 5.111′S 167 20.209′E
Specimen type Sea floor sediments
Quantity (kg) 30 kg max.

*Geological Material

Location Gonville and Caius Range
Specimen type Beacon rock samples
Quantity (kg) ?
page 12

Chemicals

Chemical form Propylene Glycol (food grade)
Quantity used Approx 300 litres, mixed with fresh water.
Location of use Two Hot Water drill sites
Storage/release details of unused chemicals Used antifreeze mix was returned to Scott Base for ultimate return and disposal in NZ. Minor quantity of mix was lost down hole.

Chemicals

Chemical form Glutaraldehyde.
Quantity used 50 mg
Location of use Camp Lab
Storage/release details of unused chemicals All contaminated sea water filtration liquids (20 litres) were returned to Scott Base and returned to NZ

Chemicals

Chemical form Mercuric Chloride solution. (HgCl)
Quantity used 10 ml
Location of use Camp Lab
Storage/release details of unused chemicals No release of chemical. Unused solution returned to Scott base and NZ for disposal.

Equipment installed/left in field

Type of equipment Drilling equipment lost down hole or buried in 2 m deep snow pit.
Location of installation left in field 77 53.308′S 167 05.067′E in moving McMurdo ice Shelf.
Size of items left in field Plywood sheet 1.2 m × 1.2 m, Plastic deflector 0.45 m diameter
Number of items left in field 2
Date of intended retrieval Not retrievable

*Other environmental impacts

Minor loss of food grade glycol fresh water mixture

*Differences from original Preliminary Environmental Evaluation (PEE)

Approval for use of food grade glycol and burying of human wastes as part of revised PEE process.