Agenda - Council - 07/28/1981 - Laserfiche WebLink

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ANOKA COUNTY J't COMMUNITY HEALTH 6 SOCIAL SERVICES 1981 ENVIRONMENTAL SERVICES (I d RECEIVrn Policy and Proceedures For ��o£cZ 8Z lZg Landfill Water Monitoring GENERAL The goal of a landfill ground water monitoring program is to detect changes in ground water quality, caused by landfill leachate, and to monitor the movement and strength of that consist of three or areas ofrconsidera- monitoring program Phase II - Expanded tion. These are: 1) Phase I - Basic /Initial Monitoring; 2 ) Monitoring; and 3) Phase III - Restoration and Mitigation. identify baseline water quality The purpose of the basic monitoring program is to and any changes in water quality that might result from landfill This monitoring is to serve as an early warning system and will utilize a g genera lized enera (non- hazardous) parameters that are most likely to be prese =am i lea and to migrate the fastest. When the basic monitoring P g must be modi- S. This new or expanded monitoring program tistically significant trend of change in water quality, the program ro ram fied to deal with the new condition . will better dilineate the location, direction of flow, and character of act leac plume to provide for adequate assessment of health and environmental imp need for remedial or restorative action (Phase Although water monitoring is a condttisnand shall license remainmthe licenseeasdresponsibde- lines are setforth by the County, protection (and lity to provide for the adequacy of the monitoring program and the restoration) of the waters of the County. PHASE I MONITORING PROGRAM , The Phase I monitoring program design and operation is the responsibility of the �icensee and shall include at least the following: 1. A hydrogeologic study shall be conducted to define the water - bearing layers beneath the site, determine the direction of ground water flow in these layers, and establish the proper placement of wells. 2. The water monitoring program should be conducted as setforth in sedtion 265.93 33241 ( The annual report,requiredMshall ' be Federa R submittedtotheDepart by April 30 each year. be 3. A minimum of at least three surficial ground water monitoring wells shall such provided (one up- gradient and two down - gradient from the fill area) and such additional wells as may be necessary to adequately monitor the site. 4. At least one set of nested wells shall be installed up- gradient of the fill. These nested wells shall be developed in the surficial ground water, the glacial till, and the top of the bedrock. Undisturbed soil samples shall be collected at 5 foot intervals and changes in formation and classified acco rd ing to ASTMI- D2486. Said samples shall be retained and turned over to the Department after classification. Water level measurements shall be made quarterly as outlined below.