Spent catalyst, washwater, and waste management. Spent catalyst, catalyst washwater, reagent-contaminated absorbents, ammonia-contaminated materials, and related wastes shall be characterized, stored, transported, recycled, treated, or DISPOSED OF IN ACCORDANCE WITH APPLICABLE LAW. No spent catalyst or reagent-contaminated waste shall be disposed of on site or discharged to stormwater, sanitary sewer, groundwater, surface water, or land unless expressly approved under all applicable permits and municipal approvals.