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r a <br /> anteca '�� <br /> "ITY OF MANTECA <br /> a <br /> PUBLIC WORKS DEPARTMENT <br /> WASTEWATER QUALITY CONTROL FACILITY <br /> DATE: OCTOBER 2, 2001 <br /> TO: KAREN NIIYA <br /> ASSOCIATE W:TER RESOURCES CONTROL ENGINEER <br /> CALIFORNIA REGIONAL WATER QUALITY CONTROL BOARD <br /> FROM: WARREN SHANNON <br /> WASTEWATER SYST r3 SUPERINTENDENT <br /> SUBJECT: PRE APPLICATION REPORT AMENDMENTS, ECKERT'S DISPOSAL <br /> Per your request, the City's Pre Application Report for 2001 biosolids <br /> spreading has been amended tc show the projected impacts from the disposal of <br /> Eckert's Frozen Foods (Eckert 's) process water on the City's agricultura- <br /> fields. <br /> The City proposes to discharge approximately one half of Eckert's process <br /> water at agronomic rates on City owned agricultural fields. Fields 1, 2, and <br /> 4 (87 acres total) have been set aside for this purpose. A m-=p of th:e <br /> disposal area is attached. <br /> An amended copy of Pre Appl_cation Report page 2 is also attached for your <br /> review. Please note Table V, "Nitrogen Loading From All Sources (available - <br /> N 2001) , " where the projected nitrogen contribution from the Eckert's <br /> discharge is shown in the column labeled "Eckert 's -N lbs/acre. " <br /> projections are based on a worst case scenar_o of 50 mg/L -otal nitrogen at <br /> 275, 000 gallons per day (half of Eckert's permitted flow) for 60 days. Field <br /> 3 will be added if mcre area is needed to maintain agro-:om�ic ra-es. ^e <br /> application area may also �De reduced if nitrogen loadings are less than <br /> expected. In addition, BOD loadings will not exceed 100 lbs/acre/day. <br /> Finally, please note the column labeled "App?_ied -N over/under req'd. " This <br /> column shows the am,oun- cf nitrogen applied relative -o the nitro-.en <br /> requirement of the crop. Ni-rogen applications on all fields are below the <br /> agronomic rakes of the crops grown. The average application rate for all <br /> fields is 107/ '-pounds under the agronomic rate. <br /> Our lease operator has -ndicated that, depending on weather condi--ions and <br /> cutting cycles, he s•;iL' either harrow or disc the fields follof_nc biosolids <br /> application. <br /> Please call if you have any questions. Thank you. <br /> c: Jim Podesta, Deputy Director of Public orks <br /> Phil Govea, Associate -7ngineer <br /> Roger Bennett, City of Lathrop <br /> Robert Dixon, CPAg, Dixon Agronomics <br /> 1001 W. CENTER ST. • MANTECA, CA 95337 • (209) 239-8433 FAX (209) 825-2359 <br /> R—IeJ Nr<, <br />