The plans and specifications for every on-site system shall be prepared as follows:

1. (1) Every system shall be designed by a Massachusetts Registered Professional Engineer or a Massachusetts Registered Sanitarian provided that a Registered Sanitarian shall not design a system to discharge more than 2,000 gallons per day pursuant to 310 CMR 15.203. Any other agent of the owner may prepare plans for the repair of one or more components, excluding the soil absorption system, of a system designed to discharge not more than 2,000 gallons per day pursuant to 310 CMR 15.203 provided the plans are reviewed and stamped by a Massachusetts Registered Sanitarian or Massachusetts Registered Professional Engineer and approved by the Approving Authority.
2. (2) Every plan submitted for approval must be dated and bear the stamp and signature of the designer. At least one copy submitted shall bear the original stamp and signature of the designer.
3. (3) Every plan for a new system or plan for the upgrade or expansion of an existing system which requires a variance to a property line setback distance, must also reference a plan which bears the stamp and signature of a Massachusetts Licensed Land Surveyor in accordance with M.G.L. c. 112, § 81D;

4. (4) Every plan for a system shall be of suitable scale (one inch = 40 feet or fewer for plot plans and one inch = 20 feet or fewer for details of system components) and shall include depiction of:

   1. (a) the legal boundaries of the facility to be served;
   2. (b) the holder and location of any easements appurtenant to or which could impact the system;
   3. (c) the location of all dwelling(s) and building(s) existing and proposed on the facility and identification of those to be served by the system;
   4. (d) the location of existing or proposed impervious areas, including driveways and parking areas;
   5. (e) location and dimensions of the system (including reserve area);
   6. (f) system design calculations, including design daily sewage flow, septic tank capacity (required and provided); soil absorption system capacity (required and provided); and whether system is designed for garbage grinder;
   7. (g) North arrow and existing and proposed contours;
   8. (h) location and log of deep observation hole tests including the date of test, existing grade elevations marked on each test, and the names of the representative of the Approving Authority and soil evaluator;
   9. (i) location and results of percolation tests including the date of test and the names of the representative of the Approving Authority and soil evaluator;
   10. (j) name and approval date of the Soil Evaluator of record;

   11. (k) location of every water supply, public and private,

       1. 1. within 400 feet of the proposed system location in the case of surface water supplies and gravel packed public water supply wells,
       2. 2. within 250 feet of the proposed system location in the case of tubular public water supply wells, and
       3. 3. within 150 feet of the proposed system location in the case of private water supply wells;
   12. (l) any surface waters of the Commonwealth, Zone As, rivers, bordering vegetated wetlands, salt marshes, inland or coastal banks, regulatory floodway, velocity zone, surface water supplies, tributaries to surface water supplies, certified vernal pools, private water supplies or suction lines, gravel packed or tubular public water supply wells, and subsurface drains located up to 100 feet beyond the setback distances in 310 CMR 15.211, any leaching catch basins and dry wells located up to 25 feet beyond the setback distances in 310 CMR 15.211; and the location of any nitrogen sensitive area identified in 310 CMR 15.214 within which any portion of the facility or the proposed system is located as well as any nitrogen sensitive area up to 100 feet beyond any property line of the facility.
   13. (m) location of water lines and other subsurface utilities on the facility;
   14. (n) observed and adjusted ground-water elevation in the vicinity of the system;
   15. (o) a complete profile of the system;
   16. (p) a note on the plan listing all variances to the provisions of 310 CMR 15.000 sought in conjunction with the plan;
   17. (q) the location and elevation of one benchmark within 50 to 75 feet of the system components which is not subject to dislocation or loss during construction on the facility;
   18. (r) when pressure distribution or dosing is proposed, complete design and specifications of the distribution system proposed including but not limited to dosing chamber capacity (required and provided), pump curves and specifications, number of dosing cycles and depth per cycle;
   19. (s) when a Recirculating Sand Filter or equivalent alternative technology is required or proposed, a complete plan and specifications for the system, including a hydraulic profile;
   20. (t) a locus plan to show the location of the facility including the nearest existing street;
   21. (u) the street number and lot number, if any, and the tax map number and lot number, if any, of the facility; and
   22. (v) the materials of construction and the specifications of the system.