Yes, there is some language

[luchabee]

Yes, there is some language in the law about reasonable wear and tear concerning a tenancy.

(My two cents: just clean it very well and take a lot of photos in case you have to go to small claims.)

Everything you need to know is probably in these pamphlets from the CA Department of Real Estate:

http://www.dre.ca.gov/faq_landlord_tenant.html