11/19: Amendment posted extending due date and changing base period PoP datesNon-Personal UT034 Snow Removal Services at CO017 - Denver CO, CO128 - Aurora CO, UT010 and UT032- Salt lake City UT , and ... 11/19: Amendment posted extending due date and changing base period PoP datesNon-Personal UT034 Snow Removal Services at CO017 - Denver CO, CO128 - Aurora CO, UT010 and UT032- Salt lake City UT , and WY010 - Evansville WY . The period of performance is one (1) 12-month base period,and four (4) twelve (12) month option periods with an option to extend services up to six (6) months.