N.H. Admin. Code § Env-Or 606.07

Current through Register No. 50, December 12, 2024

Section Env-Or 606.07 - Conceptual Model

The site investigation report shall include a conceptual model that includes:

(a) A narrative description supported by the technical illustrations required pursuant to (b), below, that describes the occurrence and movement of groundwater and contaminants at the site including transport mechanisms, migration, and degradation pathways;

(b) Technical illustrations of the nature and extent of contamination including the following:

(1) A groundwater contaminant concentration contour map(s), prepared using the site plan prepared pursuant to Env-Or 606.04(m) as a base map, that depicts:

a. The lateral distribution of groundwater contamination; and

b. The predominant contamination characteristics;

(2) A soil contaminant concentration contour map(s), prepared using the site plan prepared pursuant to Env-Or 606.04(m) as a base map, that depicts:

a. The lateral extent of soil contamination; and

b. The predominant contamination characteristics;

(3) A contaminant distribution map(s), prepared using the cross-sections prepared pursuant to Env-Or 606.06(d) as a base map, that depicts:

a. The vertical extent of soil and groundwater contamination; and

b. The predominant contamination characteristics;

(c) An estimate of the amount of contaminant mass at the site;

(d) A potential receptor map, prepared using a tax map as a base map, that identifies and locates, to the extent ascertainable, the following listed items located within 1,000 feet of the site:

(1) Streets;

(2) Properties, including tax map and lot number, ownership, and land use;

(3) Surface water;

(4) Locations where potentially sensitive human subpopulations exist such as daycare centers, schools, playgrounds, parks, senior housing; and

(5) Water supply wells including tax map and lot number and owner's name and mailing address for each well;

(e) A list of water supply wells sampled pursuant to Env-Or 606.05(d)(3), including for each well:

(1) The owner's name, mailing address, tax map and lot number; and

(2) The type of well construction and well depth to the extent ascertainable; and

(f) A preliminary groundwater management zone delineated in accordance with Env-Or 607.05.

N.H. Admin. Code § Env-Or 606.07

(See Revision Note at chapter heading for Env-Or 600) #8812, eff 2-1-07

Amended by Volume XXXV Number 23, Filed June 11, 2015 , Proposed by #10831, Effective 6/1/2015, Expires6/1/2025.