LT Info | Al Tahoe 2

Registration

City of South Lake Tahoe

Al Tahoe 2

Overview

Jurisdiction

City of South Lake Tahoe

Name

Al Tahoe 2

Type

BMP Registration

Status

Expired

Timeframe

10/01/2017 to 09/30/2022 (5 years)

Annual Credit Potential

46 credits

Establishment Year Credit Potential

46 credits (100%)

Treatment BMPs Included in Registration

Yes

Parcel BMPs Included in Registration

Other Pollutant Control Strategies

Supporting Documents

Catchment Map.pdf stormfilter-maintenance-guide-2016.pdf 2018AlTahoe2MemoFINAL.pdf

Registration Area & BMPs

Declarations

Currently viewing of Registration Years Download Table

Credit Schedule

Establishment Date

10/1/2017

Registration Duration

5 years

Registration End Date

09/30/2022

Duration Rationale

Registration reflects updated CEC numbers for Cartridge Filters per Sept. 2017 PLRM Stormwater Treatment BMP Data Evaluation Project (Northwest Hydraulic Consultants, Inc.), Regional Stormwater Monitoring Data, and League to Save Lake Tahoe citizen-science Pipe Keeper data.

Establishment Year Credit Potential

100%

Water Year 2018 Credit Potential

Water Years 2019 - 2022 Credit Potential

PLRM Models and Load Reduction

PLRM Zip Archive

Download AlTahoe2.zip Summary Report

Models and Scenarios

Model Name	Scenario Name	Scenario Type	Catchment Connectivity
AlTahoe2 (Project1)
	ExpectedRoads (Scenario2)	Baseline Scenario	100%
	ExpectedConditions (Scenario3)	Expected Scenario	100%

Load Reduction Details

	FSP (lbs)	TP (lbs)	TN (lbs)	Credit Potential
Baseline Load	12,359	46	165	N/A
Expected Load	3,221	8	80	N/A
Load Reduction	9,138	38	85	46

Treatment BMPs

Treatment BMPs Included in Registration

Yes

Centralized/PLRM BMPs

Treatment BMP Type	BMP Name	Change in FSP Reduction (lbs)	Change in TP Reduction (lbs)	Change in TN Reduction (lbs)	Credits	Water Quality Importance	Pre 2004 BMP
Cartridge Filter	ReganCartridgeFilter2	1,941	10	29	10	Essential	No
Cartridge Filter	ReganCartridgeFilter1	1,503	8	26	7	Key	No
Treatment Vault	ReganTreatmentVault1	1,245	9	0	6	Key	No
				Total	23

Distributed BMPs

Treatment BMP Type	BMP Name	Water Quality Importance	Water Quality Importance Rationale	Pre 2004 BMP
No distributed BMPs added to registration

Maintenance Plan Summary

The City plans to maintain treatment BMPs within CSLTG11 based on BMP RAM, the manufacturer’s specifications and NPDES inspection (drainage system inspection requirements). Cartridge filters are considered to be essential BMPs and will be maintained by Public Works staff on an as-needed basis dependent on inspection results. Maintenance consists of cartridge replacement and/or sediment removal. Replacement of the the cartridge filters will be performed during periods of dry weather, while cleaning of the pre-treatment vaults can occur a variety of conditions. The City cleans the pre-treatment twice per year at a minimum, and plans to replace the cartridge filters once every three years (or as required by inspections and the manufacturer’s protocols).

Inspection Plan Summary

The City plans to maintain treatment BMPs within CSLTG11 based on BMP RAM, the manufacturer’s specifications and NPDES inspection (drainage system inspection requirements). Cartridge filters are considered to be essential BMPs and will be maintained by Public Works staff on an as-needed basis dependent on inspection results. Maintenance consists of cartridge replacement and/or sediment removal. Replacement of the the cartridge filters will be performed during periods of dry weather, while cleaning of the pre treatment vaults can occur a variety of conditions. The City cleans the pre-treatment twice per year at a minimum, and plans to replace the cartridge filters once every three years (or as required by inspections and the manufacturer’s protocols).

Additional Implementation Information

See attached CONTECH StormFilter Inspection and Maintenance Procedures PDF uploaded with registration for Maintenance Decision Tree.

Parcel BMPs

Parcel BMPs Included in Registration

PLRM Parcel BMP Model Details

		Total Area (acres)	BMP Area (acres)	Source Control Area (acres)	BMP Area (% of total)	Source Control Area (% of total)	FSP (lbs/yr)
Single Family Residential
	Standard Baseline				7%	0%
	Baseline Scenario	36.7	2.57	0	7.0%	0.0%	n/a
	Expected Scenario	36.7	2.57	0	7.0%	0.0%	n/a
Multi-Family Residential
	Standard Baseline				19%	0%
	Baseline Scenario	12.1	2.3	0	19.0%	0.0%	n/a
	Expected Scenario	12.1	2.3	0	19.0%	0.0%	n/a
Commercial, Industrial, and Community Use
	Standard Baseline				5%	0%
	Baseline Scenario	1.7	0.08	0	4.7%	0.0%	n/a
	Expected Scenario	1.7	0.09	0	5.3%	0.0%	n/a

Other Pollutant Control Strategies

No other pollutant control strategies implemented in this registration