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SANTA CLARA COUNTY CODE OF ORDINANCES: Sec. B11 1/2-20. Storm water treatment design information to be included with final building and/or final grading plan submittals.

Copyrighted by SANTA CLARA COUNTY CODE & Municipal Code Corporation, 1998.

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Sec. B11 1/2-20. Storm water treatment design information to be included with final building and/or final grading plan submittals.

A. For projects where storm water treatment and/or H.M.P measures are required, the following items shall be submitted for plan checking prior to issuance of building permits and/or grading permits:

1. Hydrologic computations, including drainage area maps depicting existing and post-development runoff flow paths and land use.

2. Hydraulic computations for existing and post-development conditions.

3. If a grading permit is involved, an erosion prevention and sediment control plan must be submitted, as required by the County Grading Ordinance, County Ordinance Code, Division C12, Chapter III.

4. Structural and construction details for all components of the proposed drainage system or systems and storm water management facilities.

5. If landscaping is required, submit a landscaping plan showing disposition of existing vegetation and any vegetative site stabilization and/or landscape-based storm water management measures.

6. Cost estimates for all proposed on-site storm water treatment facilities.

7. Recommended BMP operation and maintenance procedures, including maintenance tasks, inspection and maintenance schedule, the parties responsible for BMP operation and maintenance, funding mechanisms for on-going operation, maintenance, access and safety issues.

B. HMP-Related Requirements. The following information must be included for any Group 1 project that is also subject to HMP requirements.

1. A statement of the particular reasons for the applicability of the HMP requirements to the specific project.

2. Hydrologic and hydraulic calculations for any hydromodification management BMPs, including an explanation of how these BMPs will function as the required flow controls.

3. If the applicant is applying for an exemption from HMP requirements, hydraulic calculations and construction cost data must be submitted in order to justify the requested exemption.

4. This information shall be prepared, signed, and stamped by a private professional civil engineer who is registered by the State of California.

(Ord. No. NS-517.74, § 1, 10-17-06)