Att E-Project OSMRP.pdf

Open Space Maintenance and Restoration Program

Project Notification Sheet

Calendar Year 2024 – Maintenance Entry Form

Project Name: Berm Repair Project Manager: Beckman, Craig

Cityworks Work Order: 5006 Asset ID Number(s): INOUT00199

Activity Description(s): Berm Repair

Workgroup: Engineering and Construction Preserve: Miramontes Ridge

Location/Address: Madonna Creek Dam Repair

Coordinates: (lat)37.474031 (long) -122.409020 Desired Work Dates: 9/1/2023 to 9/30/2024

Working within the Ordinary High-Water Mark? (check one) Y N x

Estimate the total disturbed area and amount of material excavated in waterways and riparian areas.

LF 0 SF 2000 CY 0

Existing Conditions & Issue to be Addressed: Roughly 2,000 sq ft erosional feature on the face of an earthen berm.

Proposed Activity (include vegetation removal): Excavate and remove unsuitable soils from the base and walls of the erosional feature. Grade to form a tiered keyway along base of feature. Install curtain drain where the keyway base meets the earthen berm. Curtain drain will consist of Caltrans Class II permeable material and 4” weep pipes to drain any subsurface flows exiting the earthen berm. Backfill keyway and subdrain with clay-rich material up to 8’ deep to form an impermeable layer along the face of the earthen berm, extending 38’ down to the toe of the erosion feature. Overtop clay-rich layer with an 8” layer of

Caltrans Class II Permeable and Caltrans Universal Gravel Filter. Add surfacing layer of 2.5’ thick

Caltrans Class V along face of repaired slope, and 3’ thick Caltrans Class VII at toe of slope. Place 12” along top of repair section and install live willow stakes throughout the entire repaired slope.

Watershed: Pilarcitos Creek Waterbody/Stream Name: Madonna Creek

Physical Setting: Remediated off channel excavated dump site serves as the earthen berm to instream CRLF breeding pond on perennial non-anadromous stream.

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Enhancement Opportunities:

Reinforcement of dump site headwall will preserve the CRLF breeding pond within critical CRLF habitat and prevent catastrophic loss of berm/streambank .

OS MRP Project Notification Sheet Calendar Year 2024

Natural Resources and Compliance Form

Figure 1: Site photo.

Figure 3: Aerial photo.

Figure 4: Map.

Biological Assessment

Biological Conditions: Vegetation encroachment into the spillway/pond outlet. Pond functions as breeding habitat for CRLF and spillway work maintains CRLF breeding habitat within federally designated critical habitat.

Protected Wildlife Species

Common Name Occurrence Impact Tier

California red-legged frog

Migratory Birds

San Francisco dusky footed woodrat

Confirmed

Potential

Potential

2B

2B

2B

(See Appendix for Plant Species) Requires Qualified Bio

Monitor

Classify the overall program activity: Tier 1 Tier 2A

| Yes |

Tier 2BX Tier 3

X N

Invasive Species Present:

Permissible Work Window: May 15 to Oct 31 (CRLF)

Applicable BMPs:

BIO1, BIO2, BIO3, BIO09, BIO10, BIO12, BIO17, BIO 22, BIO23, BIO24, BIO25

Botanical surveys required? Y X N If yes, which type? Targeted Protocol X

If a survey is required, list timing of surveys: March to June

Biomonitoring required? Pre-construction Initial Training Throughout None

If required, who is the biomonitor? Chris Perry or Steve Davison or consultant biologist d o u t b y b io lo gi ca l s ta ff

Will the work modify a Sensitive Natural Community? Y

Cultural Resource survey required? (check one)

Pre-construction Initial Training x During Excavation None

CUL1 (completed). Low to Moderate Sensitivity. Due to previously disturbed site, shifts to low. CUL5 and

CUL6 apply due to previously disturbed soils in the proposed work area.

Erosion Control and Revegetation Requirements: BMPs EC-1 through EC-5

Other Requirements (Integrated Pest Management, Wildland Fire Resiliency, other CEQA document):

Compensatory Mitigation Summary:

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