I have spoken about this earlier. If the county had asked Musk to help, Musk would have gone full speed And helped.I think the county is trying to force Elon to provide the testing for them. There are 78K people in Alameda county. If Tesla has to test all 10,000 workers every day then BOOM, the county meets their quota.
"....the document doesn’t include any plans to test workers...." (referring to Tesla's Return to work Playbook)
"Alameda officials have said more testing needs to come online"
Musk Emerges as Loudest Reopen Proponent With Tesla Threats
Testing is cheap in comparison to being shut down.
Musk would pull the right people and resources together and got it done.
My guess is Musk has offered and been refused.