A Webster Groves citizens group delivered a referendum petition bearing 982 signatures to the city clerkâs office on Tuesday morning, May 18. Signatures collected represent more than twice the number needed to force a public vote on a recent zoning code change. The Webster Groves Citizens Organization had until Wednesday, May 19, to file the petition, which calls for a public vote on zoning code modifications passed by the Webster Groves City Council on May 4. The group was required by the city charter to collect a minimum of 428 signatures from registered voters. Richard Mazzarella, president of The Webster Groves Residents Organization, said most of the 982 signatures collected were gathered at a day-long signature drive held on May 15.