4 MOD #4: THE PURPOSE OF THIS MODIFICATION (MOD 0004) IS TO EXERCISE OPTION PERIOD 4 (9/19/2015 TO 9/18/2016) FOR MAINTENANCE AND CALIBRATION OF SIEMENS BUILDING MONITORING SYSTEM FOR BUILDING 38 WITH ZERO ADDITIONAL 12-MONTH OPTION PERIOD REMAINING. AMOUNT OBLIGATED: $48,972.00 TOTAL AMOUNT OBLIGATED: $235,104.00 (CHANGED) PERIOD OF PERFORMANCE: 9/19/2011 TO 9/18/2016 (CHANGED) ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED. Exercise an Option $49.0k 9/8/15 3 MOD #2: PURPOSE: 1) TO EXERCISE OPTION YEAR 2 (9/19/2013 TO 9/18/2014) FOR MAINTENANCE AND CALIBRATION OF SIEMENS BUILDING MONITORING SYSTEM FOR BUILDING 38 WITH TWO (2) ADDITIONAL 12-MONTH OPTION PERIODS REMAINING, AND 2) TO MODIFY THE SOW TO ELIMINATE TASKS ASSOCIATED WITH THE 301 N. STONE STREET, 109E FACILITY EFFECTIVE 9/19/2013. THE MONTHLY FIXED INVOICE WILL BE REDUCED BY $255.00 PER MONTH FOR A TOTAL ANNUAL REDUCTION IN THE FIXED PRICE INVOICE OF $3,060.00. SEE THE ATTACHED ENVIRONMENTAL MONITORING SERVICES MODIFICATION DATED 9/9/2013. AMOUNT OBLIGATED: $45,804.00 TOTAL AMOUNT OBLIGATED: $138,768.00 (CHANGED) PERIOD OF PERFORMANCE: 9/19/2011 TO 9/18/2014 (CHANGED) TWO (2) OPTION PERIODS REMAINING: OPTION PERIOD 3: SEPTEMBER 19, 2014 TO SEPTEMBER 18, 2015 - $47,364 OPTION PERIOD 4: SEPTEMBER 19, 2015 TO SEPTMEBER 18, 2016 - $48,972 ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED. Exercise an Option $47.4k 9/2/14 2 MOD #2: PURPOSE: 1) TO EXERCISE OPTION YEAR 2 (9/19/2013 TO 9/18/2014) FOR MAINTENANCE AND CALIBRATION OF SIEMENS BUILDING MONITORING SYSTEM FOR BUILDING 38 WITH TWO (2) ADDITIONAL 12-MONTH OPTION PERIODS REMAINING, AND 2) TO MODIFY THE SOW TO ELIMINATE TASKS ASSOCIATED WITH THE 301 N. STONE STREET, 109E FACILITY EFFECTIVE 9/19/2013. THE MONTHLY FIXED INVOICE WILL BE REDUCED BY $255.00 PER MONTH FOR A TOTAL ANNUAL REDUCTION IN THE FIXED PRICE INVOICE OF $3,060.00. SEE THE ATTACHED ENVIRONMENTAL MONITORING SERVICES MODIFICATION DATED 9/9/2013. AMOUNT OBLIGATED: $45,804.00 TOTAL AMOUNT OBLIGATED: $138,768.00 (CHANGED) PERIOD OF PERFORMANCE: 9/19/2011 TO 9/18/2014 (CHANGED) TWO (2) OPTION PERIODS REMAINING: OPTION PERIOD 3: SEPTEMBER 19, 2014 TO SEPTEMBER 18, 2015 - $47,364 OPTION PERIOD 4: SEPTEMBER 19, 2015 TO SEPTMEBER 18, 2016 - $48,972 ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED. Exercise an Option $45.8k 9/7/13 1 OTHER FUNCTION (OF) - MOD #1:PURPOSE: TO EXERCISE OPTION YEAR 1 (9/19/2012 TO 9/18/2013) FOR MAINTENANCE AND CALIBRATION OF SIEMENS BUILDING MONITORING SYSTEM FOR BUILDING 38 AND THE STONE STREET FACILITY WITH THREE (3) ADDITIONAL 12-MONTH OPTION YEARS REMAININGAMOUNT OBLIGATED: $47,256.00TOTAL AMOUNT OBLIGATED: $92,964.00 (CHANGED)ALL OTHER TERMS AND CONDITIONS REMAIN UNCHANGED. Exercise an Option $47.3k 9/8/12 Not listed MAINTENANCE AND CALIBRATION OF SIEMENS BUILDING MONITORING SYSTEM FOR NLM, PROPOSAL NUMBER PAM 08032011A DATED AUGUST 3, 2011PLEASE SEE ATTACHED TERMS AND CONDITIONS AND ADDENDUM TO TERMS AND CONDITIONS Not listed $45.7k 9/16/11