Reviewing the license provided and the info linked it appears to me the channels are as follows- this was determined by matching dates of first use with the pairs:
152.9900/ 149.6600 Ch 1 Atlantic 1
152.2850/157.5450 Ch 5 Atlantic 4
I highly recommend you review your companies Radio Operations Policies - this is from the policy I found with a simple google search of Cataldo Ambulance frequencies- the bold is as written in the policy.
PROHIBITED USES OF RADIO COMMUNICATION SYSTEM(S)
1. FCC rules prohibit the use of any profane or indecent language on the radio.
2. Use of personal radio equipment mobile or portable not issued, programed or maintained by the Cataldo Ambulance Service is prohibited.
3. Personal messages unrelated to company business are prohibited, except emergency in nature
4. Do not reprimand over the air.
5. Do not click your microphone or make odd noises on the air.
Cataldo Radio Operations Policy
Cataldo Radio Users Guide
Scan New England Cataldo Info