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shall be provided to DTSC within 20 days after receiving the laboratory analytical results as described in the Contract No. 22-T5019. Tasks 9 and 10 will be executed upon an email from the DTSC Contract PM. The Encroachment permits, County Department of Health permits, and the tubing, are not fixed costs but estimates only. If the actual costs estimates exceed the estimates in the Contract, Contractor will notify the DTSC Contract PM immediately and provide a justification and additional documentation as requested. The DTSC Contract PM will authorize additional funds to pay the actual costs through a Field Order. Per the contract language in Exhibit B, Tasks 3 — 10 will be invoiced on a per Site basis. The previous monthly invoices were charged per Task. Invoices should follow a basic outline and requirements. Invoices must be provided on Contractor Letterhead in a searchable PDF. A monthly invoice package will be submitted to DTSC, and the package will consist of individual invoices for each site. For every site, including additional sites, the site must be on a new page. Individual invoices will be broken down into tasks with detailed discussions of what was completed (e.g, Final Phase I submitted on 11/15/2022, six of ten soil vapor probes installed within the parking lot and right-of-way — no indoor or outdoor samples collected, samples collected on 11/15/2022, samples submitted to lab on 11/15/2022, etc.). An example of how invoices will be submitted is provided below: Invoice Date DTSC Contract Manager Name Contract Number Work Order Number Site Name in Envirostor Site Address City, State, Zip Code Envirostor/DTSC Site Billing Code TASK # Details of task expenditures Expenditure Amount Task notes — examples provided above. Details of task expenditures Expenditure Amount Task notes — examples provided above. Task notes should include a basic summary of what was completed, and key dates.