Facility plans and specifications, including preliminary and final plans submitted with an application pursuant to Env-Sw 311 through Env-Sw 315 and record drawings submitted pursuant to Env-Sw 1104.07, shall conform to the following requirements:

1. (a) Plans and specifications shall bear the date of preparation and, for a facility already permitted, the facility permit number;
2. (b) Plans and specifications shall be clearly readable;
3. (c) Plans and specifications shall be prepared in accordance with standard engineering practices, including dimensions, labels, details, and other graphic elements;
4. (d) Plans and specifications shall bear the signature and seal of a qualified professional engineer as required by RSA 310-A:18;

5. (e) Except as provided by (f) below, plans shall:

   1. (1) Be prepared at a scale of no less than one inch equals 50 feet;
   2. (2) Be presented on paper no larger than 24 inches by 36 inches;
   3. (3) Show profiles drawn to standard scales with a ratio of 10 horizontal to 1 vertical (10:1), such as 40:4 and 50:5;
   4. (4) Show elevations of the surface to the nearest 0.1 foot;
   5. (5) Show elevations of the piping, sewer, and manhole inverts to the nearest 0.01 foot;
   6. (6) Report all elevations in feet and tenths and reference all elevations to a standard datum, which shall be indicated on the plans, based on mean sea level;
   7. (7) Show contours at a minimum interval of 2 feet on all plan views; and
   8. (8) Show a north arrow.
6. (f) Alternatives to (e) above shall be accepted if the information presented on the plans is as clear and understandable when prepared according to the alternative(s) as it would be prepared according to (e) above.

7. (g) Plans and specifications submitted for construction approval shall include the intended methods for sequencing facility construction, consistent with:

   1. (1) The adverse conditions specified in Env-Sw 1104.04;
   2. (2) The construction schedule required by Env-Sw 1104.02; and
   3. (3) For landfills constructed in phases over time, the requirements in Env-Sw 805.11(d).
8. (h) Plans and specifications shall be submitted with all calculations and design related documentation required to support and verify the adequacy of the proposed design and construction.

Source. #6619-B, eff 10-29-97; (See Revision Note at chapter heading for Env-Sw 1100); ss by #8459, eff 10-28-05 (formerly Env-Wm 2803.05); ss by #10598, eff 7-1-14; ss by #14108, eff 11-13-24, EXPIRES: 11-13-34