Ten officers, from Tameside and Oldham Division, began the 110 mile (177km) walk this morning.
She joined Greater Manchester Police in 2009, serving all three years with the Tameside division.
David Ward had gone to Central Library in Ashton-under-Lyne, Tameside, while on holiday to look into his history.
From April 2013, it will be trialled in Tameside, Oldham, Wigan and Warrington for an estimated 1, 500 new claimants.
Karl Armstrong, 23, of Grange Close, Hyde, Tameside, and Kalvin Heaney, 22, of Newchurch Street, Rochdale, were both sentenced to six months in prison.
PCs Fiona Bone, 32, and Nicola Hughes, 23, were shot dead in a gun and grenade attack in Hattersley, Tameside, on 18 September.
BBC: Fiona Bone and Nicola Hughes memorial garden opened in Hyde
Tameside council, near Manchester, has denoted it a "PG-12", meaning children under 12 could only be admitted if they were with an adult.
The other hospitals being reviewed are Colchester Hospital University NHS Foundation Trust, Tameside Hospital NHS Foundation Trust and Basildon and Thurrock University Hospitals NHS Foundation Trust.
In April, Plevin agreed to erect an acoustic barrier after consultation with Tameside Council and the Environment Agency, following complaints of excessive noise at the plant.
BBC: Wood dust protesters march from Mossley to Plevin plant
They are Colchester Hospital University NHS Foundation Trust, Tameside Hospital NHS Foundation Trust, Blackpool Teaching Hospitals NHS Foundation Trust, Basildon and Thurrock University Hospitals NHS Foundation Trust and East Lancashire Hospitals NHS Trust.
Tameside General and Hope Hospital in Salford, where Olivia was transferred on the day she died last June, have now apologised to parents Deborah Hitchen and Andy Dowling, of Openshaw, Manchester, for the "tragic accident".
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