Section Env-Wq 1008.01 - Lot Loading(a) Unless otherwise allowed by this section, the maximum allowable loading of sewage for subsurface disposal shall be 2,000 gallons per day (GPD) per acre with the best soil and slope conditions, with loading for a specific lot determined based on soils and slopes as specified in Env-Wq 1005.03.(b) An existing ISDS may be replaced with an ISDS designed for the same sewage load even if the lot does not meet the size requirement established as specified in (a), above, provided that: (1) The existing ISDS is a state-approved system installed after the applicable date in Env-Wq 1003.11(a); and(2) The sewage load has not increased and is not proposed to increase.(c) If an existing ISDS serving the ISDS owner's domicile cannot be replaced under (b), above, and is on a lot that does not meet the size requirements for the existing use, the ISDS may be replaced with an ISDS designed for the existing use if the ISDS owner demonstrates that the existing use has not changed since September 1, 1989, by providing: (1) A town property tax record for 1989 or earlier that is authenticated by a current official of the town; or(2) A sworn, notarized affidavit that the existing use has not increased from the use existing as of September 1, 1989 from an individual unrelated to the current ISDS owner who: a. Owned the structure served by the ISDS prior to September 1, 1989; orb. Has personal knowledge of the use of the structure prior to September 1, 1989 in an official capacity, such as by being a tax assessor or code enforcement officer. (d) The maximum sewage loading for an undeveloped lot created prior to September 1, 1989 shall be the loading determined as specified in Env-Wq 1005.03 or 300 GPD, whichever is greater.(e) An undeveloped lot created prior to September 1, 1989 for which the maximum loading under (d), above, is 300 GPD shall be eligible for approval of an ISDS only if:(1) The building on the lot is strictly residential, as defined in Env-Wq 1002;(2) The ISDS proposed for the lot meets all other applicable requirements in Env-Wq 1000;(3) The application is accompanied by: a. Proof that the lot was created in accordance with RSA 149-E or RSA 485-A; orb. Deed(s) demonstrating that the lot was created prior to the dates specified in Env-Wq 1003.11(a)(1), (2), or (3), as applicable;(4) The plan indicates that low-flow fixtures must be installed in the building;(5) The lot is restricted to sewage flows of 300 GPD for 2 bedrooms; and(6) The plan shows the footprint of the proposed residence.(f) If approval is issued pursuant to (e), above, the property owner shall record the approval showing that the sewage loading is limited to 300 GPD at the registry of deeds for the county in which the property is located in the chain of title for the property.(g) A condominium that meets the criteria of Env-Wq 1003.11(c) and that does not meet the loading criteria of (a), above, shall be eligible for approval of an ISDS to replace an existing ISDS only if: (1) The fixtures in each condominium unit are low-flow fixtures or will be replaced within 90 days of the issuance of construction approval with low-flow fixtures; and(2) There will be no expansion of the condominium or of the size or use of the individual units in the condominium.N.H. Admin. Code § Env-Wq 1008.01
(See Revision Note at chapter heading for Env-Wq 1000) #9086, eff 2-9-08
Amended by Volume XXXVI Number 41, Filed October 13, 2016, Proposed by #11184, Effective 10/1/2016, Expires 10/1/2026.