WP 93: Renewal of Type I Approval of Suitability (AOS)

Use this form to renew a Type I Approval of Suitability, necessary for land application of residuals for beneficial purposes.

Wastewater Section Chiefs

The Details

What you need

This form is for the renewal of a Type I Approval of Suitability, necessary for land application of residuals for beneficial purposes. In accordance with the provisions in 310 CMR 32.13(11) these approvals are presumptively approved within 45 days.

These approvals comprehensively regulate the land application of sludge, sludge products (such as compost and pellets), and septage.  Land application of these materials must be conducted in a proper manner to prevent pollution of ground and surface waters, drinking water supplies, and protect public health from potential contamination and transport of heavy metals and pathogens.

You must apply for this renewal if you wish to utilize sludge, sludge derived products, or septage as a fertilizer or soil conditioner by providing nutrients for growing vegetation or improving the quality of the soil for the purpose of growing vegetation.

How to renew

See details in Step 5, below.

Next steps

  1. Review the Instructions

  2. Complete the Application Form

    You may fill out and save the Microsoft Word form on your computer. The PDF version has to be printed out and completed by hand.

  3. Obtain a Transmittal Form and Number

    A unique Transmittal Number is needed for each application you submit to MassDEP.

  4. Look up the Permit Application Fee

    See page 5 of the fee schedule below.

  5. Mail your Application and Fee Payment

    Submit your fee payment and a copy of your transmittal form to:

    Department of Environmental Protection
    PO Box 4062
    Boston, MA 02211

    Submit your complete application package to the Wastewater Permitting Program in the appropriate MassDEP Regional Office (see listing below).

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