Laserfiche WebLink
Project:North County Landfill Instrument: <br />Location:17720 E Harney Lane, Lodi, CA 95240 G510512 Calibration Date:3/28/2025 <br />Date:1/22/2026 Field Staff:Garrett Backus <br />Weather Conditions:44 degrees F, fog Comments:Field Calibration 1: Fresh Air <br />Bar. Pressure:30.02 inches Field Calibration 2: 4% O2, balance N2, part # QED CG-00-00, lot # 4220617, C of A on file <br /> <br />Balance <br />(%) <br />H2S <br />(ppm) <br />example 100 0.5 0.14 GA-5000 0.0194 7.0 <br />2 shallow 8 1 0.04 GA-5000 0.0194 2.2 9:02 AM 9:05 AM 44 0.0 0.0 4.0 78.8 N/A N/A <br />2 intermediate 28 1 0.15 GA-5000 0.0194 7.9 9:05 AM 9:13 AM 44 0.0 0.0 2.8 78.7 N/A N/A <br />2 deep 47 1 0.26 GA-5000 0.0194 13.2 9:13 AM 9:28 AM 44 0.0 0.0 0.6 79.8 N/A N/A <br />3 shallow 11 1 0.06 GA-5000 0.0194 3.1 8:32 AM 8:38 AM 44 0.0 0.0 1.5 81.0 N/A N/A <br />3 intermediate 21 1 0.11 GA-5000 0.0194 5.9 8:52 AM 8:58 AM 44 0.0 0.0 1.8 80.8 N/A N/A <br />3 deep 28.5 1 0.16 GA-5000 0.0194 8.0 8:39 AM 8:47 AM 44 0.0 0.0 1.5 80.1 N/A N/A <br />Notes: <br />(1) Yellow highlighted columns are calculated from non-highlighted inputted data. <br />(2) Purge time: to determine seconds, multiply the number after decimal by 60. For example, for 1.2 minutes, multiply 0.2 by 60 = 12. Total purge time then is 1 minute, 12 seconds. <br />(3) Start Time: Record time when meter is turned on to purge. <br />(4) End Time: Record time when final measurements are taken. <br />(5) Initial CH4 is the highest reading exhibited anytime during the purge window. <br />Field Observations <br />CO <br />(ppm) <br />Temp <br />(° F) <br />Monitoring Data <br />QED GA 5000, flow specification = 550 cc/min = 0.194 cu ft / min, field calibration done at time of sampling <br />Serial #: <br /> CH4 <br />(%) <br />Field Calibration 3: 50% CH4, 35% C02, part # QED CG-50-35, lot# 4307601, C of A on file. <br />18.5 <br />17.3 <br />19.6 <br />17.5 <br />18.4 <br />17.4 <br />Probe ID <br />CO2 <br />(%) <br />End <br />Time4 <br />Probe Purge Calculations <br />One Purge <br />Volume (ft3) <br />Probe <br />Depth (ft) <br />Inside <br />Probe <br />Diameter <br />(inches) <br />O2 <br />(%) <br />Meter pump <br />rate (cfm) <br /> Initial CH4 <br />(%)(5) <br />Which gas <br />meter? <br />Purge <br />Time2 <br />(min) <br />Start <br />Time3 <br />California Department of Resources Recycling and Recovery <br />1001 I Street -Sacramento, CA 95814 <br />Waste Permitting Compliance & Mitigation Division <br />(Engineering Support Branch) <br />Log-sheet <br />1/26/2026 amc