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Overview
New Kahle Wet Basin (DCA, 20701, 20702, 5007, 5008b)
BMP Registration
Approved
10/01/2018 to 09/30/2033 (15 years)
51 credits
51 credits (100%)
Yes
Yes
No
Registration Area & BMPs
Declarations
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Credit Schedule
10/1/2018
15 years
09/30/2033
Per NDEP and Lahontan, this BMP will be registered for a period of 15 years. The wet basin will be inspected annually in the summer and maintenance will be conducted when threshold levels are met. Wet basin was constructed in 2018.
100%
51
51
PLRM Models and Load Reduction
| DCA954 (Project13) | |||||
| Baseline (Scenario1) | Baseline Scenario | 100% | |||
| Existing (Scenario2) | Expected Scenario | 100% | |||
| 11,486 | 38 | 132 | N/A | |
| 1,335 | 8 | 51 | N/A | |
| Load Reduction | 10,151 | 30 | 81 | 51 |
Treatment BMPs
Yes
| Wet Basin | New Kahle Wet Basin | 6,260 | 16 | 32 | 31 | Essential | No |
| Wet Basin | DCWB0002 | 0 | 0 | 0 | 0 | Supporting | Yes |
| Total | 31 |
| No distributed BMPs added to registration | ||||
Douglas County will inspect and maintain the new Kahle wet basin annually and after large storms. Douglas County will conduct BMP RAM annually with NDEP. The forebay will be maintained by removing sediment and debris when sediment accumulates to a depth of one foot. The wet basin has a benchmark value for material accumulation of 0 feet and a threshold of a 50% decline (1.5 feet). The benchmark value for vegetative cover is 60% and the threshold is +/-15%. This is in line with TRPA’s BMP Handbook. Vegetation will be removed when nears the threshold of 75%. Vegetation will be removed by an excavator and by hand. DCWB0002 is a wet basin on the Kahle Community Center property. It takes runoff from 20702 (Kingsbury Grade). Because the basin is located on Douglas County property, Douglas County staff will perform inspection and maintenance of the basin. The wet basin has a benchmark and threshold value the same as the new wet basin.
It is the responsibility of Douglas County to monitor all drainage improvements and treatment BMPs. Douglas County inspects the drop inlets in the roads within the catchment once a year in the summer, and after large storm events. BMP RAM is conducted in the summer months.
DCWB0002 was last maintained the summer of 2018.
Parcel BMPs
Yes
| Single Family Residential | |||||||
| 7% | 0% | ||||||
| 2.1 | 0.15 | 0 | 7.1% | 0.0% | 37.3 | ||
| 2.1 | 0 | 0 | 0.0% | 0.0% | 39.7 | ||
| Multi-Family Residential | |||||||
| 19% | 0% | ||||||
| 0.4 | 0.08 | 0 | 20.0% | 0.0% | 7 | ||
| 0.4 | 0 | 0 | 0.0% | 0.0% | 8.6 | ||
| Commercial, Industrial, and Community Use | |||||||
| 5% | 0% | ||||||
| 31.7 | 1.59 | 0 | 5.0% | 0.0% | 4756.1 | ||
| 31.7 | 30.02 | 0 | 94.7% | 0.0% | 859.1 |
Essential
Douglas County will coordinate with the Tahoe Regional Planning Agency annually on BMP compliance and maintenance.
Douglas County has an annual contract with TRPA to coordinate BMP compliance and maintenance, with the highest priority areas being registered catchments.
Other Pollutant Control Strategies
No other pollutant control strategies implemented in this registration