The City of Yakima desires to continue the remediation at the former Tiger Oil site located at 2312 West Nob Hill Boulevard. Funding for the remediation of this site has been provided by the Department of Ecology through a Remedial Action Grant. The scope of work for this phase of the project is detailed in the attached Supplemental Agreement and includes an additional $55,373 of tasks, as follows: 

-          Task 21b, additional work which MFA has already completed in May through July 2020 due to the HVOCs issue: $20,583.

-          Tasks 22 through 24, accounting for the additional work for the HVOCs component in addition to the petroleum hydrocarbons (as the primary contaminant of concern at the site) in the semi-annual groundwater events (2 years: from November 2020 through May 2022), air quality assessments, and project management.

o   Each semi-annual groundwater event cost was increased by an additional $3,608.  For 4 semi-annual events, the total additional cost is $14,432.

o   The air quality assessments (2 events) cost was increased by $2,090.

o   Project management task cost was increased by $4,557 per quarter.  Previously, we didn’t wholly account for the necessary level of efforts to prepare the monthly invoice letters, quarterly progress reports, and project discussions with Ecology and sometimes with the City.