Need Help with 30-Day notice c

[Eddie Fleckenstein]

Hi Everyone! 

My partner and I remember recently purchased our first property which is a 3 family in Chelsea Massachusetts (very tenant friendly state). My partner and I will be landlord occupying. The building has 1 unit vacant and 2 occupied. Both of the current tenant's leases end on 8/31. We decided to renew the lease for the tenants in unit 1 and are asking the tenant in unit 2 to leave because she did not meet our application requirements.

In Massachusetts we are required to provide 30-day notice by the end of August if we want to tenant to leave by September 30th. The tenant does not speak English only Spanish although her sister speaks English and has translated for her so far. My partner and I are also concerned that she might not leave after the 30-Day notice and its possible we could have to file for eviction. 

I'm wondering:

1. Are their requirements for what needs to be in a 30-day notice form? 

2. The current tenant is the only one on the lease but has 2 other "roommates" living there (that we know of) who are not on the lease (Its a 4 bedroom apartment). Any advice on how to word the 30-Day notice to ensure from a legal perspective that means all people currently living in the unit? 

2. Are there templates or resources on how to make a Massachusetts 30-day notice form that meet any or all legal requirements for the form?  

3. Are there any 30-day notice templates in Spanish? 

4. If the answer for point 3 is no, should I hire a translation service to professionally translate the 30-day notice to ensure the translation is accurate and will be seen as valid in court (if it comes to that)? 

5. I'm thinking of mailing the 30-day noticed from the post office direct recorded mail so I have a record that the notice was sent to my tenant. I would mail both an English and Spanish copy of the form. Is that sufficient or are the further steps that I should take to prove notice was sent to the tenant? 

Appreciate any advice or guidance, don't want to get this wrong!