(a) Class Y facility design must include the following:

1. (1) A general schematic of the proposed process including the proposed receiving, processing, production, curing, and storage areas;
2. (2) The composting area shall have a surface that can withstand heavy equipment loads, and shall be sloped to prevent ponding;
3. (3) Stormwater management controls to meet state and federal regulations and to prevent stormwater run-on from entering receiving, processing, curing, or storage areas;

4. (4) Site access and security measures to include:

   1. (A) Barriers to unauthorized entry and dumping;
   2. (B) All-weather access roads; and
   3. (C) Signage;
5. (5) Methods for odor, noise, dust, vector, and litter control; and
6. (6) Sufficient capacity to handle incoming waste and the storage of six (6) months’ production of finished compost and methods to handle and remove unacceptable wastes delivered to the facility.

(b) Type O and Type S facilities shall be designed and certified by a professional engineer registered in the State of Arkansas, and the design must include the following:

1. (1) A flow diagram of the proposed processing steps including:

   1. (A) An estimated mass balance of material received;
   2. (B) Residuals generated;
   3. (C) Recyclable items recovered; and
   4. (D) Finished compost produced;
2. (2) A description and depiction of proposed equipment;

3. (3)

   1. (A) A low permeability composting floor system for storage of incoming waste and active composting areas.
   2. (B) The floor system shall consist of:

(i) A subbase of compacted clay, treated soil, or other impermeable material with a permeability of 1 x 10^-7 cm/sec or less and, for all new Type S facility applications and expansions after the effective date of this rule, a minimum thickness of twelve inches (12”); and

1. (ii) Overlain by cement treated soil, stone or gravel base course, asphalt, concrete, compacted clay, or other material which can withstand heavy equipment loads.

   1. (C) The top of the composting floor system shall be sloped a minimum of two percent (2%) to prevent ponding and shall drain or empty into:

      1. (i) A holding tank;
      2. (ii) A sanitary sewer;
      3. (iii) A permitted treatment system; or
      4. (iv) An other leachate collection system;
2. (4) Site plan showing dimensions and details of the proposed processing, production, curing, and storage areas;
3. (5) Engineering drawings of the site indicating the location of roads, buildings, equipment, fences and gates, landscaping, utility lines, drainage facilities, and existing and final contours indicating any site grading work that will be necessary;

4. (6) Profile or cross section views of the site as necessary to describe the construction of:

   1. (A) Access roads;
   2. (B) Drainage structures and features;
   3. (C) Existing and final grade;
   4. (D) Superstructures;
   5. (E) Processing or storage areas; and
   6. (F) Other significant features or structures;
5. (7) Stormwater management controls to meet state and federal regulations and to prevent stormwater run-on from entering receiving, processing, curing, or storage areas, and to control stormwater run-off from these areas;
6. (8) Leachate collection and removal systems designed for incorporating the liquid back into the compost piles and/or removal and treatment;
7. (9) Site access and security measures to include barriers to unauthorized entry and dumping, all-weather access roads, and signage;
8. (10) Methods for odor, noise, dust, vector, and litter control; and
9. (11) Sufficient capacity to handle incoming waste including three (3) days’ storage, and storage of six (6) months’ production of finished compost, and methods to handle and remove unacceptable wastes delivered to the facility.