Del. Code Ann. tit. 7, § 6137
No permit or lease shall be granted to any person then in violation of any law or regulation applicable to this chapter.
7 Del. C. 1953, § 6437; 55 Del. Laws, c. 442, § 1; 59 Del. Laws, c. 212, § 1; 65 Del. Laws, c. 508, § 1