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APR 2 6 2016 <br />fittings currently offered by OPW. OPW DEB sump entry fittjngf:jVArq6 <br />listed on OPW' s Manufacturer's Affirmative Statement of Com <br />for Biodiesel (As required by California Code of Regulations section <br />2631(k)) signed by Chuck Liebal on July 19, 2012. Being of the same <br />compatible materials, the Environ DEB and FEB sump entry fittings are <br />approved for use in existing diesel UST installations with up to B20 <br />blend in California. <br />American (Advanced) Containment Sumps (ACS) <br />On April 4, 2016 I telephoned Mr. Richard DiMaggio who said he was the <br />manufacturer of ACS and he told me that the ACS are single wall <br />fiberglass sumps that are 3/8 -inch to 1/4 -inch thick. This is a typical <br />single wall fiberglass sump wall thickness. Mr. DiMaggio approved the <br />use of ACS with B20 in a letter dated March 7, 2016. Mr. DiMaggio <br />stated that ACS and layup are made from Reichhold DION 6631 Series <br />Isophthalic Polyester Resin. This resin is approved for use with Esters <br />of Fatty Acids at temperatures up to 150 degrees F according to page 33 <br />of DIONE Corrosion Guide. This temperature range is acceptable for use <br />in UST systems in California. Therefore American (Advanced) Containment <br />Sumps are approved for use in existing diesel UST installations with up <br />to B20 blend in California. <br />Information Resources <br />I relied upon the following information: <br />OPW letter from Chuck Liebal (1 page, attached) <br />OPW's Manufacturer's Affirmative Statement of Compatibility for <br />Biodiesel (on SWRCB website) <br />Richard DiMaggio, letter dated March 7, 2016 (1 page, attached) <br />Telephone conversation with Richard DiMaggio April 4, 2016 <br />Reichhold DIONE 6631 April 2015 Product Bulletin (3 pages, attached) <br />Reichhold DIONE Corrosion Guide (52 pages, attached) <br />�pFESS/ql,\ <br />NO�57 <br />EXP. 12-31-17 <br />CIV iL �P <br />Matthew E. Donohue, P.E., CA Registered Civil Engineer No. C57219 <br />2 of 2 <br />FAA <br />