Contra Costa County |
Ordinance Code |
Title 7. BUILDING REGULATIONS |
Division 716. GRADING |
Chapter 716-4. PERMITS |
§ 716-4.804. Reports—Soil.
(a)
The county building official may require a soil investigation and report based on the most recent plan.
(b)
The preliminary soil report shall be prepared by a soil engineer based upon adequate test borings or excavations. The report shall indicate the presence of critically expansive soils, or other soils problems, which if not corrected would lead to defects in structures, buildings or other improvements; and when it so indicates, it shall further report on an investigation of each lot of the development including recommended corrective action which is likely to prevent such defects or damage to each building, structure or improvement to be constructed.
(c)
The preliminary soil report shall also contain:
(1)
Reports on the suitability of the earth material for construction of stable embankments and excavation slopes, including those necessary for any artificial or natural drainage channels;
(2)
Recommendations for construction procedures to obtain required stability;
(3)
Maximum design velocities for any natural or artificial drainage channel; and
(4)
Any other recommendations concerning slides, unstable soil conditions, springs and seepage conditions, erosion control planting, or drainage facilities to enable proper development of the site.
(d)
The preliminary soil report shall be prepared on eight and one-half-inch (two hundred ten millimeters) by eleven-inch (two hundred ninety-seven millimeters) paper of durable quality and any maps or documents which accompany the report shall be of a convenient size and scale to fold to eight and one-half-inch (two hundred ten millimeters) by eleven inches (two hundred ninety-seven millimeters).
(Ords. 99-46 § 7: 69-59 § 1, 1969.)