New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 1000 - SUBDIVISIONS; INDIVIDUAL SEWAGE DISPOSAL SYSTEMS
Part Env-Wq 1003 - APPLICATIONS FOR SUBDIVISION OR ISDS APPROVAL
Section Env-Wq 1003.13 - Plans Required for ISDS Applications
Current through Register No. 13, March 27, 2025
The plan sheets required by Env-Wq 1003.12(n) shall show the following:
(a) A description of the lot on which the new or replacement ISDS is proposed to be installed, including:
(b) If the proposed ISDS or well is closer than 75 feet to a boundary, the location of:
(c) The location of the property in sufficient detail so that an inspector is able to locate the site, including the property's location shown on a USGS quadrangle map or other similar location plan and narrative directions for getting to the property by car which include telephone pole numbers and mileage from intersections or other readily-identifiable landmarks;
(d) The distance and location of the nearest wetlands identified in accordance with Env-Wq 1014.06 and surface water in relation to the proposed ISDS or, if the nearest wetland or surface water is greater than 75 feet away, a statement to that effect;
(e) A note on the plan certifying that the wetlands have been delineated in accordance with Env-Wq 1014.06 and identifying who performed the delineation and the date on which it was done;
(f) The wetland delineation performed for the purpose of locating the EDA on the property;
(g) The source of drinking water and the location of all proposed and existing drinking water supply pipes;
(h) Unless the application is only to connect to an existing state-approved EDA as specified in Env-Wq 1004.08, soil data including percolation test data, test pit log, hydric soil data including hydric soil criterion and location of hydric soils and corroborated USDA-NRCS soil survey data, in accordance with Env-Wq 1014.06;
(i) Ground surface elevations for the lot on the 1:20 scale plan showing the slope of the land at 2-foot contour intervals, to at least 75 feet from the existing or proposed structure and ISDS, including, as appropriate:
(j) Subject to (o), below, details of the proposed septic tank or treatment tank, as applicable, including:
(k) A scale plan of the proposed ISDS with construction details and dimensions on the 1:20 scale drawings, including all connections to the proposed EDA if multiple connections to a single EDA are being proposed;
(l) If any part of the proposed ISDS is located on property other than the ISDS owner's property, or if other easements or well releases are required, copies of the recorded easement(s) or well release(s);
(m) At least one benchmark and at least one tie point to landmarks or established reference points within 100 feet;
(n) Sill elevations, invert elevations at building exit, invert elevations at the inlet and outlet from the septic tank, invert elevations at the inlet and outlet from the distribution box, invert elevations of effluent conduits, and the bottom elevation of the bed, referenced to a benchmark;
(o) If a pump is proposed, the following information:
(p) Details of the distribution box, if applicable, including the number of outlets and the name of the manufacturer;
(q) A cross-section of the proposed ISDS showing the lay-out of the system;
(r) Details of the proposed EDA, including:
(s) A statement that the effluent conduits and the bottom of the bed are level, as required by Env-Wq 1017.05(h);
(t) A statement that the effluent conduits shall be installed in accordance with Env-Wq 1017.01;
(u) 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;
(v) A statement signed by the applicant certifying that the plan conforms to:
(w) The location of any part of the lot that lies within a special flood hazard area;
(x) The location of any part of the lot that is subject to deeded rights of flowage;
(y) If the application is being submitted for a replacement ISDS, whether pursuant to RSA 485-A:33, IV or otherwise, the following additional information:
(z) If the lot is within the protected shoreland, the following additional information:
(aa) The design intent, stated clearly on the plan using the statement in (1), below, together with the statement in (2)a., b., or c., below, as applicable, with the distance inserted if (2)b. or c. is used:
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08; ss by #9904-A, eff 4-16-11