Permits may be issued by a county.Logical formLearned from4 sentences. A (permit process) can be simple.Logical formLearned from4 sentences. Validity may pertain-to permits.Logical formLearned from4 sentences. A permit can be invalid.Logical formLearned from4 sentences. Activities may require a (da permit).Logical formLearned from4 sentences. Permits can be for (construction work).Logical formLearned from4 sentences. An issuance may pertain-to a permit.Logical formLearned from4 sentences. Permits can be a type of permit.Logical formLearned from4 sentences. An (airport permit) can be amended.Logical formLearned from4 sentences. A permit can be active.Logical formLearned from4 sentences. A communications-commission may grant a (construction permit).Logical formLearned from4 sentences. A permit can be on a basis.Logical formLearned from4 sentences. (Work permit) may be required.Logical formLearned from4 sentences. A requirement can be for (work permit criteria).Logical formLearned from4 sentences. A (service permit) can be complementary.Logical formLearned from4 sentences.