Residency requirements must be verified, except in unusual cases such as migrant farm worker households newly arrived in an area, where verification of residency cannot reasonably be accomplished. Verification of residency is accomplished to the extent such as, but not limited to, utility expenses or identity. If verification cannot be accomplished in conjunction with the verification of other information, then the worker uses a collateral contact or other readily available documentary evidence. Documents used to verify other factors of eligibility should normally suffice to verify residence as well. Any document or collateral contact which reasonably establishes the applicant's residency must be accepted and no requirement for a specific type of verification may be imposed. No durational residency requirement may be established.