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SAN JOAQUIN COUNTY ENVIRONMENTAL HEALTH DEPARTMENT UST WORKSHEET FOR SITE CLOSURE EVALUATION I . FACILITY/TANK INFORMATION L DATE : q111412A SITE/FACILITY NAME : NuStar Terminals Operations Partnership L . P . STATUS CODE : d3 ADDRESS : 3505 Navy Drive CITY: I Stockton FA#: FA0002052 PR#: PR0231848 TANK # j 39- 10180861 -001 TANK SIZE : 6 , 000 gallons FUEL TYPE : contact waste water II . GENERAL SITE HISTORY Is Permit Current? 0 Yes ❑ No ❑ NA Documented Soil/GW Contamination ?` Yes ❑ No Number of Tanks at Facility 1 Age of Tanks (if available) 33 years Type of❑ Dual Tank QSteel ZFiberglass ❑ Single III . TANK HISTORY Was Tank Tested ? OYes ❑ No ❑ NA Failed Testing ? ❑ Yes KNo ❑ NA If Yes , Provide Dates : Was Tank System Repaired ? ❑ Yes ❑ No'j&,NA If Yes , Describe Repair: Was Repair Done Under Permit? ❑ Yes ❑ No2(NA Were Soil Samples Analyzed ? 10 Yes ❑ No Q BTEX 0 TPH-G R1 TPH-D Q LEAD ❑ EDB 0 OTHER: vocs ❑ OXYGENATES Type of Failure/Discharge: ❑ Catastrophic ❑ Long-term Leak ❑ Overfill ❑ Unknown ❑ Other IV. REMOVAL HISTORY Attach File Soil Samples Received ? Q Yes ❑ No Seasonal High Depth to GW 30_ ft bgs Year/ Reference Spring 2015 Onsite and/or Nearby Well (s) ? ❑ Yes Q No LJ Irrigation : # Distance to Tank ft C Score 10 C Score 9 C ❑ Domestic: # Distance to Tank ft 0 points if 0 points if 0 Score 5 points if ❑ Public: # Distance to Tank ft R condition is R condition is R condition is met V. SITE FEATURE — LEACHING POTENTIAL ANALYSIS E met E met E Minimum Depth to Groundwater from Soil Sample (feet) > 100 51 - 100 25 - 501 Fractures in Subsurface (applies to foothill or mountain areas) None 9 Unknown Present Average Annual Precipitation ( 14 inches for SJC area) < 10 9 10 - 25 26 - 402 Man- Made Conduits which Increase Vertical Migration None 9 Unknown Present i . e . septic sstems , water wells , ponds) Unique Site Features : Recharge Area, Coarse Soil (coarse sands , None 9 At Least One More Than One gravels) , nearby wells Column Totals Total Points 0 + 36 + = Li Sample Results for BTEX: Range of Total Points 49 Points or More 41 — 48 Points 40 Points or Less T QC� . O � E Maximum Allowable BTEX B T E X B T X 3 E p Levels ( ppm) 1 . 0 50 50 50 0 . 3 0 . 3 0 1 . 0 N/A X 0 Sample Results for TPH : Maximum Gasoline 11000 100 10 Ga ') ' , Iq 7 190 ) 7 Allowable TPH (00 OZ�1'1 150 ( Levels m Diesel 10 , 000 11000 100 Footnotes: *** If documented soil and/or groundwater contamination is present, do not complete leaching potential analysis ( i. e. site is already on the contamination list) . If depth is >5 feet and < 25 feet, score 0 points. If depth is <=5 feet, do not use table. 2 If precipitation is > 40 inches, score 0 points. 3 Levels for BTEX are not applicable at a concentration of 10 ppm for TPH—Gasoline or 100 ppm for TPH-Diesel . V1 . STAFF RECOMMENDATION/ REFERRAL/ REVIEW 1 . Are BTEX or TPH Concentrations > Allowable Levels? KYes . No 2 . If No , Is Site Closure Recommended ? ❑ Yes ❑ No Completed By: VI C _ Q Date Referred to Site Mitigation Unit for Final Actiont Reviewed B Concur with Staff Recommendation ❑ Yes ❑ No tAll Cases are Referred to Site Mitigation for Final Action Date Closure Letter Mailed EH 23 -0080 (Rev 11 / 14/08)