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Rainwater Harvesting Legal Framework <br />Page 9 <br />Describe any additional nearby rain gages that may be used to verify on-site <br />observations. <br />2. Describe runoff model used to estimate runoff (and therefore infiltration as <br />precipitation - runoff) in the native condition. Describe model inputs such as soil types <br />and slopes and other assumptions. Describe how field observations and any other <br />measurement have been/will be used to calibrate and verify runoff model results. <br />3. Describe soil water budget model used to parse infiltration into ET, storage and deep <br />percolation in the native condition. Describe how field observations and soil water <br />monitoring have been/will be used to calibrate and verify soil water budget model <br />results. <br />4. For both the runoff and soil water budget models: If Applicant is seeking credit for <br />historic natural depletion, the application must show reasonable success in using the <br />models to simulate runoff and the soil water budget in the native condition based <br />upon two years of data collection. <br />5. Estimate the timing when captured precipitation would have accrued to the stream <br />system without the rainwater harvesting system through (a) surface flows, and (b) <br />ground water return flows. Describe how the amounts vary with rainfall intensity or <br />other factors. Describe glover model parameters and their basis. It may be necessary <br />to divide the precipitation collection area into multiple regions with different lagging <br />results based on differing geology or distance to the stream. <br />6. Provide all model files for review. <br />7. For the two-year data collection phase when historical natural depletions must be <br />replaced, the Applicant may assume that historical natural depletions accrued to the <br />stream system in the same ratio as surface and ground water return flows, for the <br />purpose of determining the timing for replacing the volume attributable to historical <br />natural depletions. If the Applicant proposes a different method for timing <br />replacements from historical natural depletions, the application should justify that <br />alternative approach. <br />Other Information Related to Rainwater Harvesting System: <br />8. Describe and map the systems that will capture precipitation for non -potable reuse as <br />well as their catchment areas. <br />9. Describe and map the surface area of natural vegetative cover made impermeable and <br />associated with the pilot project. <br />10. Describe and map measuring devices for rainwater harvesting system including inflow, <br />outflow and stage recording devices. <br />11. Describe if there is a maximum amount that will be captured in any storm event, <br />month, or over the 12 -month period total, given the constraints of the rainwater <br />harvesting system or potentially the limits of replacement water available. <br />12. Describe how and if any captured precipitation will be released to the stream system <br />and map the release system (and describe measurement if any amount released by the <br />system is to be credited toward depletions). <br />13. Complete SWSP monthly summary table (projection) with rows for each: <br />a. Diversions: potential maximum rainwater captured, <br />b. Depletions: surface return flow obligations, ground water return flow <br />obligations, historical natural depletion, total depletion <br />c. Replacements: list each replacement source and timing. <br />