* State how long have you have known or worked with the person. * List your strengths, talents, and abilities. These may include diligence, punctuality, leadership, reliability, enthusiasm, creativity, independence, teamwork, organization, etc. * Proofread your reference letter and make corrections.
Back to Licensing and Certification Program. Sign up to receive e-mail updates on DPR's Licensing Program activities. The Department of Pesticide Regulation (DPR) issues licenses and/or certificates to: 1  Persons and businesses that apply or sell pesticides. 2  Pest control dealers and brokers. 3  Persons who advise on agricultural pesticide applications.
(DF) and is for a pipeline with no flow. However, all municipal water systems involve flowing water. For example, HDPE (PE4710) DR 17 pipe has a static pressure rating for water of 125 psig. The working pressure rating (WPR) is based on actual system requirements and is a dynamic pressure rating, that is, a pressure rating for pipe with flowing water.