7 Pa. Code § 130d.23
The applicant shall develop a waste sampling plan. The waste sampling plan shall be attached to and made part of the land application proposal submitted to the Department. The waste sampling plan shall encompass the sampling techniques utilized for the soil or groundwater from the agricultural chemical facility site and the application site. The waste sampling plan shall cover each agricultural chemical, nutrient or constituent proposed to be applied to the agricultural land. The waste sampling plan shall take into account and be consistent with the chemical analysis and testing protocol required by § 130d.22 (relating to chemical analysis of waste and sampling techniques and protocol). At a minimum, the plan shall include:
(1) Quality assurance and quality control procedures. The plan shall ensure an accurate and representative sampling of the contaminated soil or groundwater, or both, the person seeks to apply to agricultural land and an accurate and representative sampling from each field or plot at the application site upon which the contaminated media will be placed. The plan shall set forth the following:
This section cited in 7 Pa. Code § 130d.21 (relating to general requirements for land application proposal form); 7 Pa. Code § 130d.51 (relating to general requirements); and 7 Pa. Code § 130d.61 (relating to site closure plan).