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SAN J O A Q U I N Environmental Health Department _ \J 1 Y Complaint Record Daily Time and Activity Summary from 6/21/2013 to 6/21/2020 for C00050437 located at 3019 NAVY DR Activity Date Recorded by 09/12/2019 Received the following email updates: PE 2546 FLORIDO 18 min SC 007 From: Sayyed A. Ridwan [mai Ito:sridwan@wbcm.com] Sent: Thursday, September 12, 2019 9:11 AM To: Bare, Mark@Waterboards <Mark.Bare@Waterboards.ca.gov> Cc: Gebremedhin,Alula@CALFIRE <Alula.Gebremedhin@fire.ca.gov>; Florido, Elianna <eflorido@sjgov.org> Subject: YARA LTE-Excavation of damaged diesel pipe and update Importance: High "Gentlemen: As discussed please see below the detailed description of the last few days activities regarding the diesel spill: Description of the Incident: On, 9/6/19 we were performing boring operation on a public property and presumably hit an underground fuel line. We immediately stopped the work and started notifying different agencies. So far, no agencies have taken the ownership of this line. The reason we knew it was fuel because after hitting the pipe, the fluid trickled through the bore sleeve to the jacking pit, smelling diesel. We also collected sample of the spill. In about 15 minutes time the trickling of the fluid stopped, leading us to believe that it might be an abandoned line with some residual fluid in it. However, unless we test pit the impact point, we will not be able to verify the size of the fuel line. The excavated pit will also shed some light to determine whether the pipe is active or not. We have acquired the services of an hazmat certified company to perform the test pitting to expose the impacted pipe to give us a better understanding of the incident. We are in close contact with SJ Environmental Health Department and also reported the incident to CAL OES and our report no is 195783. On, 9/11/19, We excavated the damaged pipe in the presence of Cal-EPA, Cal-Fire, PoS, Nu-Star and Kinder-Morgan. Our findings and next course of actions are summarized below: Pipe Material-8" Carbon Steel Pipe Status- No owner, No flow, No smell,Abandoned-however, not properly purged per current regulations Date of Material- Probably late 60's or early 70's Possible Owner-1972 As-Built, as acquired from PoS suggests that existing YARA site and PoS lands belonged to Sunland Oil and Refinery. Pipe Orientation- Crossing all of our four borings. We were lucky not have hit it during our first two bores. The third bore nicked the pipe from the bottom. Course of Actions Taken: 1. Per Cal EPA suggestions, we took two (2) samples, one from the impacted location and the other from inside the sleeve from the jacking pit end for petroleum product check. Results are expected this friday. Page 6 of 7