The applicant shall submit plan sheets showing the following:

1. (a) A plan to scale of the lot on which the new or replacement ISDS is proposed to be installed, including:

   1. (1) A description of the lot including the area of the lot, the lot’s dimensions, and all visible boundary markers around the lot within 75 feet of the ISDS;
   2. (2) The location of all existing and proposed buildings within 75 feet of any component of the ISDS within the subject lot;
   3. (3) The location of the existing ISDS, if known, and proposed ISDS on the lot;
   4. (4) The location of each known burial site or cemetery on the lot, which demonstrates compliance with the setback required by RSA 289:3, III, or a statement that there is no known burial site or cemetery on the lot within 25 feet of any component of the ISDS;
   5. (5) The location of each well that exists on the lot, if any, with a statement of whether the well is planned to be used or decommissioned; and
   6. (6) As required by RSA 485-A:30-b, the actual or proposed location of each well to be installed on the lot and the protective radius associated with the well, or a designated area within which the well can be installed without the protective well radius extending beyond the property line and without violating any other setback or lot loading requirements, located such that well construction equipment can reasonably reach the location;
2. (b) If the proposed ISDS or well is closer than 75 feet to a boundary, the location of each known burial site or cemetery on the adjoining lot that is within 25 feet of any component of the ISDS, which demonstrates compliance with the setback required by RSA 289:3, III, or a statement that there is no known burial site or cemetery on the adjoining lot within 25 feet of any component of the ISDS;
3. (c) A location plan of the property with road names and sufficient detail so that an inspector is able to locate the site;

4. (d) Wetlands information, including:

   1. (1) A note on the plan certifying that the wetlands, if present, have been delineated in accordance with Env-Wq 1014.06 and identifying who performed the delineation and the date on which it was done;
   2. (2) The wetland delineation with locations of the nearest wetlands, and surface water depicted in relation to the proposed ISDS or a note on the plan that the nearest wetland or surface water is greater than 75 feet away from the proposed ISDS; and
   3. (3) Hydric soil description as having poorly drained or very poorly drained soils in order to determine setbacks in accordance with Env-Wq 1008.05(a);
5. (e) The source of drinking water and the location of all proposed and existing drinking water supply pipes;

6. (f) Unless the application is only to connect to an existing state-approved EDA as specified in Env-Wq 1004.08, soil data:

   1. (1) Percolation test location and supporting data; and
   2. (2) Test pit locations and supporting test pit log data, unless submitted on a separate sheet in accordance with Env-Wq 1006.06;

7. (g) The existing topography on the 1:20 scale site plan per Env-Wq 1003.03(d), with elevations established using an onsite benchmark which is shown on the plan. If the National Geodetic Vertical Datum of 1929 (NGVD 29), North American Vertical Datum of 1988 (NAVD 88), mean sea level (M.S.L.), or the mean high-water level of the nearest surface water is used to establish the existing topography on the lot, the onsite benchmark shall be referenced to the datum used. Topographic information shall be prepared using the following methods and levels of accuracy:

   1. (1) Topographic information obtained from physical field measurements of the ground surface on a lot shall be taken with a precision that meets the requirements of the administrative rules at Lan 500, and shall have the following accuracy:

      1. a. Existing ground surface elevations, spot elevations, and water level measurements shall be taken to the nearest tenth of a foot; and
      2. b. Two-foot contour intervals shall be accurate to the nearest foot;

   2. (2) Topographic information established from methods other than obtaining physical field measurements shall be taken with a precision that meets the requirements of the administrative rules at Lan 500, and shall:

      1. a. Include contour lines depicted with 2-foot intervals that have an accuracy the meets the requirements of (g)(1) above;
      2. b. Be field verified with no less than 1 ground shot per 500 square-feet to confirm the accuracy of the data that is associated method; and
      3. c. Ground shots shall be depicted and labeled as such on the plan and a note shall be included on the plan indicating the method that was used to generate the topographic information that is depicted on the plan; and

   3. (3) Topographic information within the 4,000 square foot area required by Env-Wq 1005.02(b)(2) or within the area that is 75 feet from the ISDS shall be prepared using the method referenced in (g)(1) or in (g)(2), above, and shall:

      1. a. Be depicted with 2-foot contour intervals within both of the areas for sloping lots, as applicable, and have an accuracy that meets (g)(1), above; or
      2. b. Depict a sufficient number of spot elevations within both of the areas for flat lots, as applicable, and have an accuracy that meets (g)(1), above;

8. (h) The proposed septic tank or treatment tank with details, as applicable, including:

   1. (1) The liquid capacity of the tank(s), in gallons;
   2. (2) The material of construction, such as concrete, fiberglass, or plastic;
   3. (3) The location and elevations of all pipe inverts flowing into and out of the tank;
   4. (4) The location of all baffles and the depths below the pipe invert in or out of the septic tank or tank chamber that each baffle extends into; and
   5. (5) The location of the tank on the property and tank risers and covers in accordance with Env-Wq 1010.05;

9. (i) A 1:20 scale site plan, or 1:10 scale site plan in accordance with Env-Wq 1003.03(d), of the proposed ISDS with notes for construction, construction details, and dimensions on the plan, including:

   1. (1) The structure from which the existing or proposed ISDS will provide sewage disposal service;
   2. (2) A foundation sill or floor slab elevation for the structure;
   3. (3) The location of all ISDS components;
   4. (4) The location of an existing or proposed drinking water well or potable water source with applicable well radius identified;
   5. (5) Existing topographic information that meets the requirements of (g) above;
   6. (6) Existing conditions, physical features, and proposed improvements within 75-feet of the ISDS;
   7. (7) Proposed grading for the ISDS in 1-foot or 2-foot whole number contour intervals that tie back into the existing contours shown on the plan. Proposed spot elevations may be used to depict the finish grade of the top of an EDA, the fill extension of an EDA, and on flat lots and shall include all finish grades above ISDS components to the nearest tenth of a foot;
   8. (8) The location of a benchmark within 75-feet of the existing or proposed ISDS with a clear line of sight horizontally to the EDA and a vertical accuracy of 0.1 feet, and that is no more than 5-feet vertically from the proposed bed bottom of the EDA;
   9. (9) The location of 2 tie points within 100 feet of the proposed ISDS with a clear line of sight horizontally to the EDA and with distances noted from the 2 tie points to two corners of the EDA, subject to (n) below; and
   10. (10) The horizontal location of the test pit(s) pursuant to Env-Wq 1006.01 and of the percolation tests pursuant to Env-Wq 1007.01;

10. (j) A profile plan of the proposed ISDS beginning at the location of the pipe connection to the existing or proposed structure and ending at the furthest point of the proposed EDA, including:

    1. (1) The elevation of all pipe connections to the existing or proposed structure;
    2. (2) The elevations of proposed pipe connections to and from the existing or proposed septic tank;
    3. (3) The elevations of all pipe connections to and from the existing or proposed distribution box;
    4. (4) The elevation of all pipe connections to and throughout the existing or proposed EDA;
    5. (5) The elevation and dimensions of the bed bottom;
    6. (6) The type, depth, and width of all fill material, sand, and septic stone within the EDA; and
    7. (7) The slopes of all effluent conduits, all of which shall be referenced to a benchmark;

11. (k) A cross-section detail of the proposed EDA including:

    1. (1) The type and size of the effluent conduits;
    2. (2) The spacing and number of all effluent conduits; and
    3. (3) The type, depth, and width of all fill material, sand, and septic stone within the EDA, unless shown on the profile;
12. (l) A reference to the county, book and page number or a notarized document to be recorded that describes easements for any part of the proposed ISDS that is located on property other than the ISDS owner’s property, and for any other easements that are required;
13. (m) At least one benchmark that is within 75-feet horizontally from the existing or proposed ISDS, and that is within 5 feet vertically of the proposed bed bottom of the ISDS, with a vertical accuracy of 0.1 feet;
14. (n) Tie points from landmarks or established reference points within 100 feet of the bed or of the center for dry wells. There shall be at least 2 tie points, which establish 3 ties, for use in locating the corners of the beds or the centers of dry wells. The benchmark may also be used as a tie point;

15. (o) If a pump is proposed, the following information:

    1. (1) The total dynamic head calculation;
    2. (2) The make, type, capacity, and model of the sewage pump;
    3. (3) Details of the pump well, including pump well manufacturer, type, and size;
    4. (4) The make, type, and model of the pump controls, including elevations of control switches; and
    5. (5) A cross-section of the pump, pump chamber with applicable dimensions, supply and discharge pipes and connections, floats and float elevations, dosing capacity and frequency, storage capacities, and details of the discharge line, including pressure line data and siphons, and siphon chambers, when used, or provide the previous approval number and date of previous approval to operate date if the pump is re-used from a previous approval having the same flow;
16. (p) Details of the distribution box, if applicable, including the material of construction, the inlet and outlet pipe configuration, and the name of the manufacturer;
17. (q) A statement that the effluent conduits and the bottom of the bed are level, as required by Env-Wq 1017.05(h);
18. (r) A statement that the effluent conduits shall be installed in accordance with Env-Wq 1017.01;
19. (s) A designation on the plan of all areas of exposed ledge or boulders greater than 6 feet in diameter within 75 feet of the proposed EDA;
20. (t) A statement signed by the applicant certifying that the plan conforms to all applicable local septic system ordinances and regulations;
21. (u) The approximate location of any special flood hazard areas that exist within any part of the lot;
22. (v) The location of any part of the lot that is subject to deeded rights of flowage;

23. (w) If the lot is within the protected shoreland, the following additional information:

    1. (1) The reference line;
    2. (2) The primary building line;
    3. (3) The distance and location of nearest protected waterbody in relation to the ISDS unless the nearest protected waterbody is greater than 125 feet away; and
    4. (4) A designation on the plan of the limits of the woodland buffer;

24. (x) The design intent, stated clearly on the plan as follows:

    1. (1) “The bed bottom shall be constructed at elevation _____ feet”; and

    2. (2) “This elevation shall be:

       1. a. At existing grade on the high side of the proposed bed”;
       2. b. _____ feet above existing grade on the high side of the proposed bed”; or
       3. c. ____ feet below existing grade on the high side of the proposed bed”; and
25. (y) Lot loading calculations in accordance with Env-Wq 1005 for the proposed flow or the lot loading calculations from a previous construction approval for the same lot, unless documentation in accordance with Env-Wq 1008.02 is provided.

Source. (See Revision Notes #1 and #2 at chapter heading for Env-Wq 1000) #11184, eff 10-1-16; ss by #14486, eff 2-1-26, EXPIRES: 2-1-36