Urgent query

I am a manufacturer located in rural area of maharashtra state, I had a enquiry from excise deptarment for evasion of excise duty,
 I have certain queries regrding the same which are as follows.

1. how much exemption does SSI unit have located in rural area?

2. The proprietor of the firm expired just before 10 days of enqiry, so wat are the liablities that can be forced on successors by excise department?

Any one who can answer my query will be very thankful.. and will be eagrly waiting

Thank you