Abstract: "Intermediate model structures for simplicial presheaves",
by J.F. Jardine

This note (it is not really a finished paper) shows that any set of
cofibrations containing the standard set of generating projective
cofibrations determines a closed model structure on the category of
simplicial presheaves on a small Grothendieck site, for which the weak
equivalences are the local weak equivalences in the usual sense. A
condition is given for these new model structures to be cofibrantly
generated; this condition is met by Blander's local projective theory.

Department of Mathematics
University of Western Ontario
London, Ontario N6A 5B7
Canada

URL:  http://www.math.uwo.ca/~jardine/papers/