IN WITNESS WHEREOF, the parties hereto have executed this Agreement on the date specified below: Signed: Signed: Authorized Signatory for Filer. WITNESS these signatures: FAIRFAX COUNTY WATER AUTHORITY. CONTRACTOR. AUTHORIZED. AUTHORIZED.A witness signature refers to the signature of an individual who has observed the signing of a legal document and can attest to its authenticity. This manual is intended to assist persons who are involved in the administration of a decedent's estate in Virginia. For this reason, the name and contact details of the witnesses must appear on the agreement, in addition to their signature. A copy of instructions and general sample questions are in. ATTACHMENT 7A and 7B. IN WITNESS WHEREOF the Parties have executed this Agreement the date and year first above written. Just print, complete and fax or mail the attached Agreement. Make sure to list all the rental properties you want included in the Agreement.