Form 11-D Instructions: Other Manure Storage Best Management Practices 1. This form is a list of best management practices related to the operation of manure storages. You may or may not utilize these BMP’s. Mark the checkbox under “Y” if you utilize that practice. If your facility could utilize the bmp on Form 11-D, but does not, mark the checkbox under “N.” Mark the checkbox under “NA” if the BMP on Form 11-D, is not applicable for your manure storage, for example, check the NA box for Secondary Containment if you have not been required to have a secondary containment by a professional geologist or professional engineer.