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07/16/2009 09:29 MUSD MAINTENANCE 4 94640138 <br /> <br />NO.112 003 <br /> PATRELL OJj <br /> ENGINEERING <br /> GROUP, INC. <br />MAIN DRAIN SUMP AND GRATE CERTIFICATION <br />Pool Name: Sierra High School Competition Swimming Pool <br />Address: 1700 Thomas St. <br />City: Manteca, California <br />Drain Description: Competition Swimming Pool Main Drains <br />certify that I have evaluated the main drains in the above mentioned Swimming Pool. <br />This evaluation has included: <br />Determination of the overall dimensions of each drain sump, <br />Determination of the size and location of the piping entering the sump, <br />Determination of the anticipated peak flow (GPM) exiting the sumps. <br />Based upon the results of my evaluation, remedial work to the main drains ha:49auga-.ri <br />completed at the above-mentioned swimming pool. I certify that I have review100. <br />remedial work that has been performed on these main drains and found the w <br />been completed in accordance with that recommended from my evaluation. <br />Therefore, as a Registered Professional Engineer in the State of California, I cert <br />the main drains, including the sump, piping and grates in the above mentioned p <br />in compliance with the ASME/ANSI A112.19.8-2007 Pool Safety Standards, more .C:0 <br />commonly known as the Virginia Graeme Baker Pool and Spa Safety Act. 1C ° <br />Any changes to the configurations of the drains, the secured grates, the piping or flow <br />rates of the above-mentioned swimming pool may serve to void this certification. All <br />grates are to remain firmly anchored in place while the pool is filled, and are to be kept <br />clean of debris in keeping with proper maintenance standards. Prior to performing <br />any alterations to the above-mentioned swimming pool that may, in some way, <br />affect or alter the performance of these certified main drains, this office is to be <br />notified and a review scheduled.. <br />Douglas Ferrell RE. <br />Principal <br />Patrell Engineering Group, Inc <br />751 Sunny Grove Lane <br />Glendora, CA 91741 <br />(626) 335-4362 <br />751 Sunny Grove Ln. • Glendora, CA 91741 • PH: (626) 335-4362 • FAX (626) 963-4812