Specifications include, but are not limited to: This material will be used to de-chlorinate the treated effluent at the Rock River Water Reclamation District. The material shall be a liquid solution of Sodium Bisulfite that is approximately 40% by weight in available Sodium Bisulfite content. Product in the range of 38% to 42% by weight in available Sodium Bisulfite content is in full compliance with Rock River Water Reclamation District specifications. Product that does not meet the weight percentage specifications will be rejected. There is no further treatment of the effluent prior to discharge to the stream. Therefore, the product must not contribute any constituents that would cause violation of the District's NPDES permit.