As a chemist, I can provide you with a general approach to determine the concentration of heavy metals in the groundwater surrounding a landfill site. However, I cannot provide you with specific values without actual data. Here's the approach you can follow:1. Collect groundwater samples: To determine the concentration of heavy metals in the groundwater, you will need to collect samples from various locations surrounding the landfill site. This may include samples from different depths and distances from the landfill.2. Analyze the samples: Use analytical techniques such as Inductively Coupled Plasma Mass Spectrometry ICP-MS or Atomic Absorption Spectroscopy AAS to determine the concentration of heavy metals lead, cadmium, and nickel in the collected samples.3. Evaluate the influence of landfill leachate discharge: To understand the impact of landfill leachate on the heavy metal concentrations in the groundwater, you will need to analyze the leachate samples as well. This will help you determine the source of the heavy metals and their migration patterns.4. Compare the results with regulatory limits: Compare the concentrations of heavy metals in the groundwater samples with the regulatory limits set by the relevant environmental protection agency. This will help you determine if the concentrations are within acceptable limits or if there is a potential risk to human health and the environment.5. Develop a remediation plan: If the concentrations of heavy metals in the groundwater are found to be above the regulatory limits, you will need to develop a remediation plan to address the issue. This may include measures such as improving the landfill design, implementing groundwater treatment systems, or conducting regular monitoring of the groundwater quality.Remember that the actual concentrations of heavy metals in the groundwater will depend on various factors such as the composition of the landfill waste, the local geology, and the hydrogeological conditions. Therefore, it is essential to conduct a site-specific investigation to obtain accurate results.