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To: %lr. Pctcr Hays <br /> Date: Febi-Liary 21, 2022 <br /> pa'-'e 18 <br /> CDWR RESPONSE TO CONSIDERATION CONSTRUCTION <br /> MATERIALS RECLAMATION PERMIT CONVERSION <br /> APPLICATION <br /> CDWR Comment 1 <br /> The final reclamation plan includes unlined ponds of exposed groundwater at the site. The <br /> ponds will be required to be included in a plan for augmentation prior to final release of <br /> the site. <br /> CDWR Response 1 <br /> LRM plans to file an Augmentation Plan with the Water Court. LRM holds shares for <br /> water storage rights at their Walters and Bokelman Pits site under Decree 2009CW105, <br /> which will be used as the replacement source. See response 10 of the DRMS comments, <br /> included with this letter for more details. <br /> CDWR Comment 2 <br /> If stormwater runoff is intercepted by this operation and is not diverted or captured in <br /> priority, it must be released to the stream system or infiltrate into the ground within 72 <br /> hours; otherwise the operator will need to make replacements for evaporation from the <br /> surface area of the intercepted stormwater <br /> CDWR Response 2 <br /> LRM has already submitted a request for a Substitute Water Supply Plan(SWSP)and will <br /> provide an Augmentation Plan once approved. See response 10 of the DRMS comments, <br /> included with this letter, for more details. Pit lake evaporation is estimated for the first <br /> year of operations and will be updated and calculated monthly. <br /> Because the pits are unlined,stormwater that is intercepted by the pit lakes will be included <br /> in the monthly consumptive loss accounting reported to the DWR and replaced as described <br /> in the SWSP. Also, any excess stormwater not evaporated quickly returns to the <br /> groundwater system,of which the lake is a part. Stormwater entering the lake immediately <br /> raises the head, which immediately results in an increased outflow. Given that the travel <br /> distance is only 100 feet,response in the river is also immediate. Thus, there should be no <br /> reason to replace evaporation from the surface area of the intercepted stormwater. <br /> 20220209_1045_DRUS_Adequacy_Review Response_MASTE <br /> R.docx TELESTG <br />