Okla. Admin. Code § 785:32-3-2

Current through Vol. 42, No. 4, November 1, 2024

Section 785:32-3-2 - Site-specific aquifer storage and recovery plan

(a) An approvable site-specific aquifer storage and recovery plan shall include, at a minimum:

(1) a report containing hydro geologic properties of the project area, including;

(A) description of the aquifer selected for storage, including its areal extent, any associated confining or semi-confining layer(s), and any other aquifer(s) present in the area of hydrologic effect;

(B) description of the lithology, soil types, geochemistry, and well logs including but not limited to geologic and/or drillers' logs;

(C) location of surface water bodies including but not limited to springs, creeks, ponds, rivers, and lakes within the area of hydrologic effect;

(D) groundwater information in the area of hydro-logic effect including;

(i) elevation of groundwater;

(ii) location of water rights and groundwater wells, including total depth, within the area of hy-drologic effect;

(iii) groundwater flow direction and hydraulic gradient determined by a sufficient number of wells in the same water bearing zone developed according to the aquifer conditions;

(iv) assessment of previous hydrologic data;

(E) site-specific aquifer characteristics including;

(i) storage capacity of the aquifer (storage coefficient for confined aquifers and specific yield for unconfined aquifers);

(ii) hydraulic conductivity, transmissivity, and porosity;

(iii) aquifer thickness and saturated thickness;

(iv) if applicable, perched groundwater conditions;

(v) estimated annual recharge in inches per year;

(2) a site monitoring plan for the aquifer storage and recovery system shall include, at a minimum:

(A) sufficient number of monitoring wells dependent upon aquifer type, including a minimum of three (3) monitoring in the same water bearing zone to determine if any changes to groundwater flow direction and gradient have occurred;

(i) number, location, and design of monitoring wells; extraction wells can be used as monitoring wells;

(ii) at least one monitoring well must be located down-gradient of the flow path through the water delivery mechanism;

(B) proposed method to demonstrate proportion of source water present at recovery;

(C) effects of the operation on groundwater elevation, aquifer leakage rates, and groundwater discharge rates;

(D) the frequency of reporting shall be a maximum of one year unless otherwise determined by the Board;

(E) methods to monitor impacts of ASR operation on nearby surface water features.

(3) impact area of proposed aquifer storage and recovery plan;

(4) anticipated effects on any hydrologic feature within the area of hydrologic effect;

(5) source of water to be used in ASR and estimated annual volumes available;

(6) description of the method for determining the amount of source water available at the proposed recovery site;

(7) accounting for changes in volume and quality of stored water;

(8) current and proposed land use within the ASR area of hydrologic effect;

(9) plan for well spacing that demonstrates that the storage and recovery of water shall not interfere with any domestic or permitted groundwater use in the basin. Unless otherwise determined by the Board, minimum spacing requirements shall be:

(A) Within bedrock groundwater basins, no new or proposed well(s), excluding observation and monitoring wells, shall be drilled and completed within one thousand three hundred twenty feet (1320') of an authorized existing well or proposed well location on lands of another.

(B) Within alluvium and terrace groundwater basins, no new or proposed well(s) shall be drilled and completed within six hundred sixty feet (660') of an authorized existing well or proposed well location on lands of another.

(C) These well spacing provisions shall not be applicable to plugged or abandoned wells.

(b) The delivery of stored water and the recovery of such water must occur within the same subsurface watershed unless otherwise determined by the Board.

(c) The proposed site-specific aquifer storage and recovery plan shall be reviewed and approved by Board staff prior to the ASR permit application being submitted to the Board for approval. Corrections, changes, or amendments to site-specific ASR plan. If the site-specific ASR plan is found defective, the board shall advise the applicant of the corrections, changes, or amendments required and the applicant shall be allowed to re-file within sixty (60) days from the date of notification of deficiency. If the site-specific ASR plan is not corrected, Adopted, or changed within the time required, the board may inactivate the application.

(d) Final approvable site-specific aquifer storage and recovery plan shall be reviewed and approved by the Board as part of the ASR permit application.

Okla. Admin. Code § 785:32-3-2

Adopted by Oklahoma Register, Volume 35, Issue 24, September 4, 2018, eff. 9/14/2018