SU0004092 - Laserfiche WebLink

Home Browse Search

Makeup water for the processing of sand is to be provided by a groundwater well and by storm water retained and pumped during the storm season . Makeup water is captured and pumped to a series of settling ponds . All process water will be pumped from the settling ponds and recycled through the system . The settling process involves pumping the water into an initial settling pond . The water then flows , via pipeline, into a secondary holding pond . The water is then pumped back into the washing plant . 4 . 4 . 2 Office And Vehicle Maintenance Self Contained Trailers - The office and vehicle maintenance self contained trailers shown in Figure 3, includes the truck loading area , offices , shop and equipment wash area . The area is generally flat . The vehicle maintenance shop is an enclosed work area . The equipment wash area comprises a concrete pad adjacent to the shop 4 . 4. 3 The Water System - The washing and screening plant will require approximately 160, 000 gallons of make-up water per day to replace water retained in the settled clays and silts, and in the stockpiled raw sand product . There is no discharge from this operation . All water used is recycled . Some water will be taken from the settling ponds and used for dust control on the roads around the quarry site during the dry summer season . Water for domestic uses will be taken from a well located on a portion of the property away from the mining pit . It is anticipated that the site will be dewatered in advance of the mining by drilling a series of perimeter wells . Groundwater discharge from these wells will be directed to an existing drainage easement across the Union Pacific Railroad right-of- way, and from there to the San Joaquin River . 4 . 5 Geology and Seismicity Landmark Lathrop Group, LLC 4 - February 3, 2000