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Complaint Investigation Summary Report#:5105 <br /> COMPLAINT ID: C00055079 Site Location: 898 S DE ANZA BLVD <br /> Received by: EE0000753 NG Received Date: 7/28/2022 Complaint Received Via: PHONE <br /> Assigned To: EE0000033 NSO Assigned Date: 7/28/2022 <br /> Program/Element Code 2546-Release/Spill Response(excluding Joint Team) <br /> Nature of complaint: <br /> ABOVE GROUND TRANSFORMER MALFUNCTION AND WAS LEAKING NON-PCB MINERAL OIL-200 GALLONS,NO WATER IMPACT, NEAR <br /> DRAIN BUT PLACED BERM. STILL LEAKING BUT INTO BUCKET. <br /> PROPERTY INFORMATION <br /> PropertN Name: <br /> Site Location 898 S DE ANZA BLVD District 005-RICKMAN,ROBERT <br /> MOUNTAIN HOUSE,CA 95391 Location Code 99-UNINCORPORATED AREA <br /> Cross Street MUSTANG APN 25405032 <br /> Complaint Status: at <br /> Date Abated: (j 7 I V `� 'L.k, "� Abated By: 14,,G <br /> Activity Summary <br /> Activity Date Recorded by <br /> 07/28/2022 Received Cal OES spill report#22-4276 about an electrical malfunction causing a NSO <br /> fuse to blow. According to Cassandra Gomez of Modesto Irrigation district this <br /> resulted in a non-PCB mineral oil leak of approximately 200 gallons from a pad <br /> mount transformer. No waterways or storm drains were impacted, spill was <br /> continuous and contained into buckets and soil berms put down to protect <br /> waterways. Arrived on site met with Cassandra Gamez- Environmental <br /> Compliance analyst for Modesto Irrigation District (MID). Observed Pad mount <br /> transformer leaking oil into a bucket. Modesto Irrigation District(MID) employees <br /> were on site with equipments cleaning up. Concrete and soil/dirt over concrete <br /> was impacted. Kitty litter was applied on impacted concrete. MID employees <br /> excavated the dirt/soil approximately 9 inches deep and removed the impacted <br /> dirt/soil and sand and clean the concrete. Two 55 gallon drums of oily dirt and one <br /> 5 gallon container(used oil) of waste was generated from the clean up operation. <br /> Clean up completed by MID employees and was looking adequate. Discuss <br /> mineral oil sample for PCB analysis. <br /> prepared OIR and e mailed to <br /> Cassandra Gamez -.Cassandra.Gamez@mid.org <br /> 08/01/2022 Received an e-mail from Cassandra Gomez stating that the correct amount of NSO <br /> mineral oil release was 90 gallons instead of 200 gallons. She attached a photo of <br /> transformer data plate indicating "no detectable PCBs at time of manufacture" <br /> discuss with PC M. Elena. Elena stated that we still needed a PCB analysis. I <br /> e-mailed Cassandra and let her know that the PCB analysis is also needed. <br /> Cassandra accepted to profile the mineral oil for PCB and send test results. <br /> Hi Paul, <br /> We have a sample lined up to be taken and tested for PCBs. We'll forward the <br /> test results to you when completed. <br /> Also, our Meter Tech was able to provide a better estimate of how much oil was <br /> released. The oil was around 4-6" below the top of the cooling fans, and he <br /> estimated there was at least 300 gallons he pumped into the used oil tank. <br /> Approximately 90— gallons was released instead of the conservative 200 gallons <br /> that I initially reported. <br /> Thank you, <br /> Cassandra <br /> 5105 apt Page 1 of 2 <br />