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CP0034 ARCO #2133 AND CHEVRON #94275 -2- February 24, 2011
<br /> COMMINGLED PLUME ACCOUNT NUMBER 034
<br /> PRE-APPROVAL REQUEST NO. 7
<br /> All costs for corrective action must meet the requirements of Article 11, Chapter
<br /> 16, Underground Storage Tank Regulations in order to be eligible for
<br /> reimbursement.
<br /> COST PRE-APPROVAL BREAKDOWN
<br /> # Amount
<br /> Task* Pre- Comments
<br /> Approved
<br /> 1 Perform Semi-Annual GW monitoring in 25 wells
<br /> for the first quarter of 2011 and 8 GWMWs for
<br /> Quarterly the third quarter of 2011, gauging, monitoring,
<br /> Monitoring and traffic control, sampling, lab analysis using EPA
<br /> Sampling 25 methods 8015/8260B for TPH(g), TPH(d)—if
<br /> GWMWs in Q1 $16,047 required, BTEX and Oxygenates, purge/decon
<br /> and 8 wells in water disposal; includes cost for time, materials,
<br /> 03 equipment, instruments, supplies, support, and a
<br /> detailed QMR.
<br /> 2 Perform Semi-Annual GW monitoring in 31 wells
<br /> (on-site, off-site and public right of way),
<br /> gauging, monitoring, traffic control, sampling, lab
<br /> analysis using EPA methods 8015/8260B for
<br /> TPH(g), TPH(d), if required, BTEX and
<br /> Oxygenates, purge/decon water disposal;
<br /> includes cost for time, materials, equipment,
<br /> Prepare Semi- instruments, supplies, support, and a detailed
<br /> Annual
<br /> GW $5,500 Semi-Annual GW monitoring report. The Semi-
<br /> Reports
<br /> Annual GW monitoring reports shall have
<br /> Reports historic gw elevation data, contaminant
<br /> concentration data, figures showing iso-
<br /> concentration maps for TPH(g), benzene,
<br /> MTBE, GW flow gradient maps, electronic data
<br /> format, conclusions, recommendations and
<br /> revisions to the site conceptual model (if
<br /> applicable).
<br /> 3 All necessary project management for both the
<br /> Project $5,980 sites, agencies coordination etc. for the duration
<br /> Management of the next four semi-annual groundwater
<br /> monitoring and wellheads replacement.
<br /> TOTAL PRE- $31,849
<br /> APPROVED
<br /> * Task descriptions are the same as those identified in Stantec Consulting
<br /> Corporation's February 7, 2011, cost estimate.
<br /> California En vironmental Protection Agency
<br /> Z4'Recycled Paper
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