SU0004094 - Laserfiche WebLink

Home Browse Search

The excavation of the sand and gravel deposits will involve extensive modifications to the site. The applicants are proposing to have temporary slopes of%to 1, which exceeds 1:1 as specified in the San Joaquin County Development Title Section 9- 1415.3(k)(5). In order to exceed the 1:1 slope the applicant must provide the Community Development Department with a slope suitability study. The Development Title Section 9-1415.3(k) requires that all slopes over fifty feet in height shall be terraced. The applicant is proposing that final slopes have a full-engineered 2:1 slope without the required terracing. County standards for slopes are designed to reduce the likelihood of erosion and mudslides. This is a potentially significant impact. Also, as previously explained in the discussion on water, the applicant is proposing to ,. relocate Hospital Creek to increase the area that could be mined. Grading and mining in the area could alter the stream flow on a permanent basis. This is a potentially significant impact. Plant/Animal Life The Department of Fish and Game has indicated in a telephone conversation dated January 29, 2002 that the project will result in a loss of habitat and recommends participation in the San Joaquin Multi- Species Habitat Conservation Plan (SJMSHCP). Participating in the SJMSHCP will reduce the potential impact to less than significant. If the applicant decides to participate in the SJMSHCP the mitigation fees will be collected at the time of development of the proposed quarry. Air/Climate The project will generate dust from excavation, hauling, and processing operations. _ Equipment and traffic will also contribute to air quality impacts. The San Joaquin Valley Air Pollution Control District (SJVAPCD) has reviewed the referral information. In a letter dated January 28, 2002, the SJVAPCD indicates that it is likely the proposed project will exceed the District levels of Nitrogen Oxides and Volatile Organic Compounds and indicated that further review is necessary. This is a potentially significant impact. Noise Trucks associated with the proposed quarry may create noise levels along haul routes that exceed noise standards for residences in the proximity of the haul route. Residences in proximity of the project site may also be exposed to noise levels from quarry equipment and processing plant that exceeds the maximum levels in the San Joaquin County Development Title. This may be a potentially significant impact. Traffic/Circulation _ The Public Works Department estimates that the proposed quarry will generate approximately 500 trip ends per day. This is expected to have a significant impact on County roads. In the letter dated January 25, 2002, the Public Works Department is requiring that a traffic study be completed and that all mitigations proposed in the traffic study be Conditions of Approval. Traffic is a potentially significant impact. Cultural Resources Notice of Preparation 3 PA-0200065