Underground Storage Tank Program

SITE ASSESSMENT WORKPLAN REQUIREMENTS

A workplan (proposal) must be submitted and approved prior to conducting any site assessment activities; the Responsible Party shall modify the workplan, as necessary, at the direction of the Los Angeles Fire Department (LAFD), pursuant to Article 11, Section 2722 (c) and (d) of the California Code of Regulations, July, 2001, and Division 31 of the Los Angeles Fire Code, 1998 Edition. The workplan must describe all activities to be undertaken and appropriate protocols to be used. All reported data shall be properly referenced as applicable. All analytical results shall be tabulated by sampling point name and number and presented in chronological order.

A workplan must contain a wet ink signature and a seal indicating expiration date of one of the following California licensed professionals:

- Professional Civil Engineer (PE)
- Professional Geologist (PG)
- Certified Engineering Geologist (CEG)
- Professional Petroleum Engineer (PE)

All work must be performed under the direct supervision of an PE, PG, CEG, or PE.

A. Site Information

1. Name and address of the site and Responsible Party.
2. Name and telephone number of the appropriate contact person.
3. LAFD case number.
4. Complete mailing list of all record fee title owners and written certification that the landowner notification requirement has been met.

B. Site History

1. Current and previous type(s) of business activities on site.
2. Hazardous material(s) spill/release history at the site.
3. Location, capacity, content, and construction material of existing and removed tank systems.
4. Current site conditions including summary of all previous site investigations, soil vapor study, remedial actions, etc.

C. Maps

1. Site Map to include the following:

• The location of all tanks (past and present) with associated product piping; chemical storage and processing areas; and transfer/drain lines.
• The location of all previous sampling points, borings, and monitoring wells.
• The location of surface and subsurface features and structures (buildings, pump islands, and planters).
• The location of utilities (sewer, water, gas and power lines).
• Tank excavations (past, existing, and proposed).
• The location of proposed sampling points, borings, trenches, and monitoring wells.
• Scale, legend, date, and compass direction.

2. Vicinity Map to include the following:

• An index map showing the regional area and site boundaries. U.S. Geological Survey topographic map or a street guide map is recommended.
• The location of geographic features (surface waters, water wells, schools, and hospitals).
• The location of topographic features (depressions, slopes, cliffs, etc.)
• Scale, legend, date, and compass direction.

D. Regional and Site-Specific Geology

1. Describe lithology of soil and any bedrock formations using the United Soil Classification System.
2. Include color, grain distribution, and general characteristics of the subsurface soil and/or bedrock.

E. Regional and Site-Specific Hydrogeology

1. Indicate both the current depth to shallowest groundwater and the historic high groundwater level. If LAC DWP Hydraulic/Water Conservation Division records are used, indicate the depth of the well and screening interval.
2. Provide groundwater basin information including known and potential beneficial uses.

F. Description of Proposed Work

1. Provide a brief summary of the objectives of the proposed site assessment activities and demonstrate how these goals will be accomplished through the proposed activities.
2. Provide a sampling and analysis plan including the locations and number of samples to be obtained and analyzed, type(s) of drilling and sampling equipment, soil and/or groundwater sampling procedures, and sample collection and field handling protocol.
3. Indicate the analytical methods to be performed on the soil and/or groundwater samples collected.
4. Include equipment decontamination procedures.
5. Include waste disposal procedures.

G. Schedule of Proposed Work

Provide a detailed schedule for implementation and completion of proposed work.

H. Interim Remedial Actions

1. Treatment system design, type of equipment, and operation specifications.
2. Description of monitoring method and schedule to evaluate system effectiveness and to ensure receptors are protected.
3. Remedial waste determination and management of remedial wastes.
4. Verification sampling plan.

I. Community Health and Safety Plan

1. Evaluation of potential public health hazards and exposure pathways.
2. Site monitoring protocol and equipment.
3. Administrative and/or engineering controls to prevent or minimize public exposure to chemical and physical hazards:

• Site security
• Vapor
• Dust
• Noise
• Open excavations
• Stockpiled soil.

4. Site Safety Manager: name and 24-hour emergency telephone number.
5. Emergency Planning.
6. Public Notification Program.