Sec. 366.405. - Investigations and Monitoring.

(a) After the Board has approved the Wellhead Protection Area Map(s), the Division, using the City GIS system, shall map the location of all Private wells within the Wellhead Protection Area that are drilled into the Hawthorne Group or the Floridan Aquifer. The Division shall also map known sources of groundwater contamination in the surficial aquifer, the Hawthorne Group or the Floridan Aquifer within the Wellhead Protection Area. Thereafter, the Division shall conduct an investigation to determine whether any such site is, or is likely to contaminate the Floridan Aquifer within a Wellhead Protection Area. (b) The mapping and site investigation shall include a review of available federal, State and local environmental databases, including, but not limited to, databases pertaining to Brownfields Redevelopment Programs, Florida Department of Environmental Protection SIS Contaminated Sites List, lists of commercial hazardous waste transporters' facilities, hazardous waste notifications, solid waste facilities, storage tank and petroleum contamination/cleanup records, U.S. Environmental Protection Agency Comprehensive Environmental Response, Compensation and Liability Act and Resource Conservation and Recovery Act remedial action sites. In conducting the investigation, the Division shall, at a minimum, consider the condition of such sites; the status of the site within any applicable U.S. Environmental Protection Agency and/or Florida Department of Environmental Protection regulatory program; and, any existing or planned remediation activities and site management plans. (c) Using the Division's and St. Johns River Water Management District (SJRWMD) water well database, the Division shall map private well locations within the Wellhead Protection Areas and shall assess the depth, use, and condition of each identified private well. If additional information is required to make such an assessment, the Division shall inspect the well and perform appropriate testing to complete the well evaluation. The Division shall identify wells known or likely to penetrate the Hawthorne Group and/or Floridan aquifer within each Wellhead Protection Area. Thereafter, the Division shall conduct an investigation of each well into the Hawthorne Group and Floridan Aquifer to determine the condition of the well and its potential as a contaminant pathway into the Floridan aquifer. (d) The Division shall assess whether any wells are located within, or downgradient in the shallow aquifer gradient from a contaminated site within a Wellhead Protection Area. The Division shall determine the condition of the well to prevent the downward migration of contaminants from the shallow aquifer to the Floridan Aquifer based on the applicable regulatory standards of design and installation, and proper maintenance practices including, but not limited to: (1) Proper grout seal outside of the casing; (2) Presence of an approved and certified back flow prevention device; (3) Proper sanitary seal on wellhead; (4) Concrete pad around wellhead; (5) Surface water drainage; (6) Well casing integrity; (7) Properly maintained pumping and distribution systems. (e) It shall be the responsibility of the Division to determine that a Public Potable Water well is at Risk of Contamination. Once this determination has been made, the Division shall notify the Public Water Supply Utility and identify the specific contaminants of concern. Within 30 days after receiving the notice, the Public Water Supply Utility shall submit to the Division a proposed plan to sample the Public Potable Water well. The plan should reflect the configuration of the affected well or wellfield, any existing groundwater monitoring plan, and the level of concern regarding the potential for the contaminants to reach the Floridan Aquifer. The Division shall review and approve the proposed groundwater monitoring plan before it is implemented by the Utility. The costs to execute the monitoring plan shall be the responsibility of the Utility. The results of the monitoring shall be supplied to the Division as specified in the monitoring plan. In the event a monitoring plan is not approved within 60 days after the initial notification date, the Director may order the Public Water Supply Utility to implement a monitoring plan recommended by the Division. A Public Water Supply Utility may request the Director to reconsider an order to implement a monitoring plan or appeal the order to the Board as provided in Section 360.112 , Ordinance Code. (Ord. 2004-973-E, § 2; Ord. 2008-346-E, § 3) Note— Former § 366.605 .