You are the Contract Manager of the Employer's Representative in a Thermal Power Plant Project. The Contract for this project is EPC Turnkey Contract using the FIDIC Silver Book (edition 2017) with a Contract Price of 28 million USD. The Employer's Requirements require that: "the Contractor design in accordance with international and national technical regulations, and standards, [etc.]".

For piling works, the Employer's Requirements state that the Contractor will design according to a specific national standard for piling works NTS-PW-01. After all piles for the jetty have been installed, a pile load test on lateral bearing capacity shows that actual lateral bearing capacity is much lower than the calculated lateral bearing capacity. It was later revealed by the Technical Standard Committee that there was a typo mistake during preparation of the NTS-PW-01 (translated from a foreign standard). The lateral bearing capacity of installed piles had been substantially overestimated as a result of this typo. Contractor submits a claim for 200,000 USD regarding extra costs for installing additional piles as a result of errors in the Employer's Requirements.

In the hydrological information of Site Data provided by the Employer, the annual high water level is 4.0m. However, during the design stage, with updated data from local stations along the rivers, the Contractor found out there was a mistake in the calculation. The annual high water level should be 4.5m. As a result, the Contractor has to design and build additional flood walls along the river to protect the Plant from flooding. The Contractor claims an amount of 300,000 USD to construct the flood wall, based on Unforeseeable difficulties.

As the Employer's Representative, after you have consulted with both Parties but failed to reach agreement, you will make a fair determination of the Claims of the Contractor.

In your "Notice of the Employer's Representative's determination", what is your determination for the Contractor?