1. (1) Prefabricated tanks: The application for prefabricated tank design and construction approval must include the information listed in Table 1.

   Table 1—Required Application Information

   (a) Manufacturer information:	(i) Manufacturer's name;
   	(ii) Mailing address;
   	(iii) Street address;
   	(iv) Phone number; and
   	(v) Email address.
   (b) Manufacturer's authorized contact information:	(i) Name of the manufacturer's authorized contact;
   	(ii) Mailing address;
   	(iii) Street address;
   	(iv) Phone number; and
   	(v) Email address.
   (c) If there is an agent, manufacturer's agent information:	(i) Name of the manufacturer's agent;
   	(ii) Mailing address;
   	(iii) Street address;
   	(iv) Phone number;
   	(v) Email address; and
   	(vi) A signed and dated statement from the agent verifying agent status. The statement must include the following: "I certify that I represent (insert manufacturing company name) and I am authorized to prepare or direct the preparation of this application for registration. I attest, under penalty of law, that this document and all attachments are true, accurate, and complete."
   (d) Water-tightness certification:	A signed and dated statement from the manufacturer or agent certifying their sewage tank is watertight at the point of manufacturing. The certification must include:
   	(i) A description of the test method and identification of the person performing the test; or
   	(ii) The facility certification from National Precast Concrete Association testing.
   (e) A full set of design drawings with supporting calculations:	(i) Design drawings stamped by the design engineer.
   	(ii) The design drawings meeting all the requirements in WAC 246-272C-0200.
   (f) Installation instructions.
   (g) A description of the function of the sewage tank along with any known limitation on its use.
   (h) A design engineer's certification:	A signed and dated statement from the design engineer submitted with the design documents certifying the tank meets all standards and requirements in WAC 246-272C-0200 through 246-272C-0250.
   (i) Proprietary product manufacturer statement, if the tank is used with a proprietary product listed with the department:	A signed and dated statement from the proprietary product manufacturer:(i) Identifying the proprietary product model number; and
   	(ii) Stating the tank drawings were reviewed and found acceptable for use with the specified proprietary product.
   (j) Payment of all applicable fees.

2. (2) Cast-in-place tank: The application for cast-in-place tank design and construction plan approval must include the following information:

   1. (a) Design drawings and supporting calculations stamped by a design engineer;
   2. (b) All tank design load limits including maximum traffic loading and earth loading;
   3. (c) Specific excavation, compaction, bedding, tank construction, and backfill requirements;
   4. (d) A signed and dated statement from the design engineer submitted with the design documents certifying the tank meets all standards and requirements of WAC 246-272C-0200 through 246-272C-0250; and
   5. (e) A signed and dated statement from the proprietary product manufacturer identifying the proprietary product model number, and stating the tank drawings were reviewed and found acceptable for use with the specified proprietary product.

[Statutory Authority: RCW 43.20.050 (2) and (3). WSR 09-23-119, § 246-272C-0125, filed 11/18/09, effective 12/19/09.]