The furnishing of a safety and stabilization guarantee to return the property to a safe and stable condition or to otherwise implement measures to protect the public from access to an unsafe or unstable condition. The amount of such a guarantee shall be $5,000 where the overall bonded improvements are $100,000 or less. Where the overall bonded improvements are $100,000 or more, then the Township Engineer shall calculate the bond amount in accord with the following: $5,000 for the first $100,000 of bonded improvement costs, plus 2.5% of bonded improvement costs in excess of $100,000 up to $1,000,000, plus 1% of bonded improvement costs in excess of $1,000,000.