D.C. Mun. Regs. tit. 20, § 2402
2402.1 Each Pesticide Operator License shall specify the category(ies) or subcategory(ies) of pest control activity in which the business may lawfully engage.
2402.2 The Pesticide Operator Certificate shall be conspicuously posted on the premises of the licensee and shall be accessible during normal business hours for inspection.
2402.3 A licensee who elects to add or delete one (1) or more categories or subcategories from the existing license shall notify the Director in writing of the proposed changes to the modification of the current license.
2402.4 The licensee shall immediately notify the Director when supervision by a licensed certified applicator is not available.
2402.5 The license shall not be affected for ten (10) days after notification, during which time the licensee shall designate another licensed certified applicator.
2402.6 The Director may extend the grace period up to thirty (30) days where deemed a necessity.
2402.7 During the grace period, restricted use pesticides may not be used without a licensed certified applicator available to supervise the application.
SOURCE: As amended by Final Rulemaking published at 25 DCR 3044 (October 6, 1978), incorporating Proposed Rulemaking published at 25 DCR 2118 (August 25, 1978); as amended by Final Rulemaking published at 30 DCR 2204, 2207 (May 13, 1983).