For AI agents: read the machine-readable documentation index at /llms.txt or the single-file full reference at /llms-full.txt.

DUTIES AND REQUIREMENTS (10-21-040 et seq)

Municipal Code of Chicago tit. 10, ch. 10-21, art. II
in effect

Municipal Code of Chicago § 10-21-040 Membership in 811 Chicago.

Municipal Code of Chicago § 10-21-045 Industry standards to be followed.

Municipal Code of Chicago § 10-21-050 Excavation and demolition requirements.

Municipal Code of Chicago § 10-21-060 Facility marking requirements.

Municipal Code of Chicago § 10-21-065 Joint meet.

Municipal Code of Chicago § 10-21-070 Third-party violations.

Municipal Code of Chicago § 10-21-080 Damage to underground facilities.

Municipal Code of Chicago § 10-21-090 Liability or financial responsibility.

Municipal Code of Chicago § 10-21-100 Limitation on liability.

Municipal Code of Chicago § 10-21-110 Penalties.

Municipal Code of Chicago § 10-21-120 Emergency telephone system outages; reimbursement.

Municipal Code of Chicago § 10-21-130 Chicago Underground Facilities Damage Prevention Fund.

Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2651100Fetched: 10/24/2026