HomeMy WebLinkAbout2021-04-20 BR Report 2600General Contractor License #841453
Buena resourcel;
P.O. Box 2040
Santa Maria, CA 93457-2040
P: (805) 346-1766
F: (805) 346-1767
April 20, 2021
Ms. Molly Brown, Haz Mat Inspector
City of SLO Fire Dept.
2130 Santa Barbara Avenue
San Luis Obispo, CA 93401
Subject: April 6, 2021 Laboratory Results for 2600 Broad Street, San Luis Obispo, CA.
Dear Molly:
Buena Resources, Inc. has summarized the six samples taken from the Sump Trench West,
Sump Trench Pile, Sump Trench Bottom, Fire Trench Bottom, Fire Trench West and Fire
Trench East that were analyzed for CAM metals. Samples taken from the Sump Trench
West, Sump Trench Pile and Sump Trench Bottom required additional STLC and TCLP
testing for both chromium and lead. Samples were taken by staff from Pacific Petroleum
California (PPQ on April 6, 2021 and delivered to OEC Laboratory in Santa Maria, CA.
DISCUSSION OF RESULTS
As noted above, CAM metals reported TTLC levels of chromium and lead that required
additional soluble testing to determine the STLC and TCLP levels. The STLC chromium
levels were 0.7 mg/I for the Sump Trench West sample, 0.39 mg/I for the Sump Trench
Pile sample and 0.27 mg/I for the Sump Trench Bottom sample all of which are below
the hazardous threshold.
The STLC lead results were 3.6 mg/1 for the Sump Trench West sample, 15 mg/1 for the
Sump Trench Pile and 7.6 mg/1 for the Sump Trench Bottom sample, of which the last
two samples are above the hazardous threshold for lead which is 5.0 mg/1 and would be
considered CAL Haz for STLC lead.
Buenarcsccrcc"
A State Certified Small & WBE Business
BUENARESOURCES
TCLP testing was also performed on the three samples for lead but all three reported
levels from 0.086 mg/1-0.23 mg/I which are all below the RCRA hazardous threshold of
5.0 mg/I.
CONCLUSIONS
Three of the samples taken were below action levels for the TTLC CAM metals that were
analyzed and do not require any further soil removal. The Sump Trench West sample
reported STLC levels below the hazardous threshold and does not require additional soil
removal. The Sump Trench Pile and the Sump Trench Bottom reported STLC levels that
are CAL Hazardous for STLC lead and require additional soil removal. The material for
the last two samples would require disposal at a Class I TSD facility.
Thank you for the opportunity to be of service. If you have any questions, please contact
this office at (805) 346-1766.
Sincerely,
Buena Resources, Inc.
Daniel P. Ringstmeyer, P.E. (043540)
Owner/Engineer
Buenaresour(:L,
A State Certified Small & WBE Business
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