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costs for the project are $278,290, including the 5 percent project contingency. This is an increase of
$18,990 compared to our original proposal. The added components of the project provide more
detailed data collection (test basin water level telemetry) and additional field crew and supervision
time to account for unforeseen conditions/delays during site-to-site mobilization/demobilization
days.

Please let me know if you have any questions or would like to discuss anything. I’m available anytime
tomorrow (if I’m not in the office, I can be reached on my cell phone at 415-828-2457). I would also
be happy to incorporate the revised cost table in a revised proposal if you need that before your
meeting on Wednesday.

Thanks,
Ed

Edwin Lin, PG, CHg
Principal Hydrogeologist

2490 Mariner Square Loop, Suite 215
Alameda, CA 94501
510.747.6920 x104
elin@toddgroundwater.com
www.toddgroundwater.com

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Yucaipa Groundwater Sustainability Agency - March 14, 2018 - Page 189 of 226