Grounds maintenance services for Riverside National Cemetery. Base year plus four option years. Please see the performance work statement and instructions to offerors.Purpose of this amendment is to p... Grounds maintenance services for Riverside National Cemetery. Base year plus four option years. Please see the performance work statement and instructions to offerors.Purpose of this amendment is to publish the past performance questionnaire document. Please see instructions to offerors for more information. Deadline for proposals remains 9/15/2026.