Lakeisha Williams has a pretty good will - she finds $10,500 in cash at the Goodwill store and returns it.

It's not uncommon for Goodwill to receive items that weren't intended for the donation mile, but it's not often that they find $10,000 -- in cash.

Goodwill employee Lakeisha Williams was sorting through donations at the Stockton, Calif., collection spot when she found an envelope full of $100 bills -- a total of $10,500 -- according to ABC affiliate KXTV. But instead of pocketing the cash, she turned the full sum in to her manager.

"My concern was, someone is out that money and I'd like for them to get it back," Williams told KXTV.

Goodwill's policy for such incidents is to hold the money for the donor in the event that they misplaced it.

“What we did is we take the money … and put it into a holding account," David Miller, president of Goodwill Industries of San Joaquin Valley told ABC, "We wait usually a pretty good amount of time to see if somebody comes forward and identifies themselves and says they made a donation and a mistake."

If the donor does not come forward to claim the money within 120 days, however, the cash will be treated as a donation to Goodwill, and Williams will be awarded 10 percent of it -- roughly $1,000 -- for turning it in.

“We have a policy to reward our employees for their honesty and integrity," Miller told ABC.