Inc., Wakefield MA, USA; ScaleStick® and Hydroblend™ are used in accordance with an agreement. Black ink use document number Package Identification Number (PIN CODE) KEEP TANK AGREEMENT This agreement is between the government unit and the tank owner(s) Date of the government agency. Form 3400-185 or Waste Treatment Agreements (for domestic wastewater tanks. USLegal meets industry safety and compliance standards. Follow these simple instructions to get the Holding Tank Agreement Form – Manitowoc County ready to ship: filling out the form of the holding tank agreement – Manitowoc County no longer needs to be really complicated. Now you can easily move from your apartment or workplace directly from your smartphone or office. #1 trusted security seal on the Internet.