Put on a Tyvek suit with a hood and respirator just so that your client thinks you are taking the issue seriously. Lay down plastic to catch and chips or dust and bag it. Lead based paint hazard is overrated as far as I can tell. I wouldn't encourage a regular diet of lead paint chips though.

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13