Sent May 05, 2018, all in uppercase so I knew he was serious.

TUESDAY I HAVE TO PICK UP 9,000 LBS OF CLASS 8 MATERIALS IN 200 BOXES ON 10 PALLETS PLUS 50 BAGS ON 2 PALLETS AT 1500 LBS OF CLASS 9 MARINE POLLUTANT MATERIALS.
DO I NEED A CORROSIVE PLACARDS WITH THE UN NUMBER ON THEM AND MARINE POLLUTANT PLACARDS FOR MY TRAILER?
I REFUSED THIS LOAD FRIDAY FOR THE LEAKING OF ONE BAG OF THE MARINE POLLUTANTS AND NO HAZMAT DOCUMENTS FOR THE CLASS 8 BOXES.

My reply the next day:

Thank you for contacting me.  I will answer your question below:

• The hazard class 8 Corrosive Material as described meets the following criteria:
  • 9,000 lbs in 200 boxes on 10 pallets.
  • Class 8 is listed in Table 2 at 49 CFR 172.504(e).
  • A quantity of more than 454 kg (1,001 lb).
  • Is in a non-bulk packaging.
• The vehicle must display the Class 8 placard on all four sides of the vehicle.
  • Display of placards
  • Visibility of placards
• However, it is not necessary to display the HazMat’s identification number (UN NUMBER) on the placard because both of the following are true for this consignment:
  • The HazMat is not in a bulk packaging. If in a bulk packaging it would be necessary to display the identification number on the vehicle.
  • It is not the only HazMat on the vehicle and is not more than 4,000 kg (8,820 lb). Read: Vehicle Marking Requirements for Large Quantities of a Single Hazardous Materials in Non-Bulk Packagings
• The marine pollutant as described meets the following criteria:
  • 1,500 lbs in 50 bags on 2 pallets.
  • It is a marine pollutant.
  • It is a Class 9 Miscellaneous.
• It is not necessary to display either the Class 9 placard or the marine pollutant mark.
  • When is the marine pollutant mark not required?
  • Is the Class 9 Placard  Required?
  • FYI: though it has the same dimensions and visibility requirements as a placard, the identification of a marine pollutant is a mark, not a placard.

• You were correct to reject the original consignment due to damaged packaging and lack of hazardous material shipping paper.  Per 49 CFR 177.801:

No person may accept for transportation or transport by motor vehicle a forbidden material or hazardous material that is not prepared in accordance with the requirements of this subchapter.

I hope this helps.  Please don’t hesitate to contact me with any other questions.

That must have done it because I didn’t hear from him after that.