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HomeMy WebLinkAbout7.1 Branaugh Quarry Surface Mining Permit 0 0 AGENDA STATEMENT CITY COUNCIL MEETING DATE: February 11, 1985 SUBJECT: Alameda County Planning Department Draft EIR Surface Mining Permit SMP-18 (Branaugh Quarry - Collier Canyon Road) EXHIBITS ATTACHED: 1 - Transmittal letter from Alameda County Planning Department requesting review and comment of Draft EIR (A copy of the complete Draft EIR is available for review at the Dublin City Offices) 2 - Draft memo from Larry Tong, Dublin Planning Director to William Fraley, County Planning Director, indicating City Staff ' s comments on the Draft EIR r (ft)7 3 - Notice of Public Hearing on Surface Mining Permit SMP-18 4 - Excerpts from Draft EIR including summary section and selected maps . RECOMMENDATION: Review and comment on the draft memo (Exhibit 2 ) and direct Staff to transmit comments to Alameda County Planning Department FINANCIAL STATEMENT: None DESCRIPTION: On January 17 , 1985, the Alameda County Planning Department distributed copies of the Draft Environmental Impact Report for Surface Mining Permit and Reclamation Plan; SMP-18, an application of R. D. Branaugh to mine over a ten (10 ) year period an approximate 30 acre portion of a 39 . 8 acre parcel located at 1881 Collier Canyon Road. The subject property is situated approximately 0 . 6 miles west of Doolan Road, in the unincorporated portion of Alameda County. The subject property occupies the most southeasterly corner of the City' s eastern Extended Planning Area and is situated within the City' s adopted Sphere of Influence. Staff has documented the specific comments on the Draft EIR in the draft memo to William Fraley of the County Planning Department. The areas of comment/concern are summarized as follows; 1. Dublin General Plan and Sphere of Influence The Draft EIR should indicate that the site is within the Extended Planning Area of the revised draft Dublin General Plan and the Dublin Sphere of Influence. The southern portion of the site is designated for Business Park/Industrial ; Low Coverage Use. The intent is to provide a high quality campus-like setting for research and development uses . The northern portion of the site is designated for either residential or open space uses. ITEM NO. 7 / COPIES TO: Based on the information presented in the Draft EIR, the proposed quarry operation would be in conflict with the Dublin General Plan. 2 . Coordination of Mining Activities with Adjoining Parcels to the West: Various sections of the Draft EIR discuss potential benefits to securing coordination of grading activities between the subject property and the parcels to the west (increased efficiency, reduced aesthetic impacts, etc . ) While the Draft EIR cites cooperation between adjoining properties as a desirable goal, little discussion or analysis is presented in the form of proposed mitigation measures that would serve as a basis to entice and/or require said cooperation to occur. Staff feels this is an area that needs to be analyzed in the Draft EIR in greater detail to assure that all potential avenues are explored to secure the desired cooperation between the affected private property owners. 3 . Detailing Mitigations to Potential Aesthetic Impacts: In a manner similar with the previous area of concern, the Draft EIR provides some discussion concerning the potential aesthetic impacts but seems to fall short in its level of detail of its discussion about possible mitigation measures . Staff feels it would be appropriate for specific alternate grading criteria to be developed as part of the "Project Alternatives" section. The more detailed analysis should include a graphic depiction of the resulting modifications to the proposed Mining Plan for this project. 4 . Methodology Used to Estimate Average Trip Generation Rates and Average Activity Days: In Staff ' s opinion it is unclear as to what methodology was utilized in estimating average trip generation rates and the average number of annual activity days. Since the identified traffic impacts would be directly influenced by any fluctuation of these rates, it is desirable to know if there is any likelihood that these numbers could significantly understate the actual trip generation and activity days rates. -2- ALAMEDA COUNTY PLANNING DEPARTMENT 399 Elmhurst Street, Hayward, California 94544 (415) 881-6401 January 17, 1985 Interested Parties: Presented herein for review and comment is a copy of the Draft Environmental Impact Report for Surface Mining Permit and Reclamation Plan, SMP-18, application of Robert D. Branaugh to mine over a 10 year period an approximately 30 acre portion of a 39.8 acre parcel located at 1881 Collier Canyon Road, approximately 0.6 miles westerly of Doolan Road, unincorporated Alameda County. All comments on this Draft EIR must be received by February 20, 1985 to be considered and included in the Final EIR. A public hearing before the Alameda County Planning Commission has been scheduled for Monday, February 4, 1985, beginning at 6:00 p.m. in the Auditorium of the Alameda County Puolic Works Building, 399 Elmhurst Street, Hayward, California. Interested parties may appear and give testimony with respect to the Draft EIR at that time. If there are any questions, please contact Paul Deutsch at the above number. Ver trul ours, azd aul Deutsch, Planner III Development Planning Division PD/pd d t i Doc. 0983D Mir, EXHIBIT e? TO: William Fraley, Planning Director and Secretary County Planning Commission of Alameda County Attention: Paul Deutsh, Planner III, Development Planning Division FROM: Laurence L. Tong, Planning Director City of Dublin by Kevin J. Gailey, Senior Planner DATE: February 6, 1985 RE: DRAFT EIR, SURFACE MINING PERMIT AND RECLAMATION PLAN; SMP-18 As requested in your letter of January 17 , 1985, herewith submitted are comments on the Draft Environmental Impact Report for Surface Mining Permit and Reclamation Plan; SMP-18. The primary concern that the City has with the proposal is that it would be in conflict with the Dublin General Plan. The revised draft General Plan designates the southern portion of the site for Business Park/Industrial ; Low Coverage Uses. The northern portion of the site is designated for either residential or open space uses. Operation of a quarry adjacent to the Business Park/Industrial area, or residentia/open space areas would not be compatible or desirable. Other specific concerns are indicated below: Page i, Final Paragraph; In addition to the "Partial Mitigation" spelled out in this paragraph, it should also be stated that coordination of the proposed mining operation with grading on the adjoining property to the west would also serve to mitigate potential adverse aesthetic impacts. Page ii, Final Paragraph; While the Draft EIR indicates that coordination with adjoining properties to the west is desirable, additional analysis to provide a "hook" and/or incentive to secure that coordination should be made part of this document. Page 2, Paragraph 5; The Mining Plan submitted should more precisely detail the envisioned future land uses to assure those uses will be compatible with the land form proposed by the Mining Plan. Page 5, Paragraph 7; It would appear appropriate to require on- site monitoring of the removal of the existing well by a representative of Zone 7 of ;the Alameda County Flood Control and Water Conservation District, rather then just "consultation" with the District. Page 7, Paragraph 3; As an elaboration to the stated mitigation measures, it appears appropriate to require the applicant to secure review and comment on the proposed reclamation plan by the Bureau of Reclamation. The basis of this review should be to assure that the manner topsoil is stockpiled will maximize the retention of its organic content and assure the soils ability to support revegative cover of disturbed areas during reclamation stages. Page 9, Paragraph 4; It is unclear in the text what methodology is used in estimating the average number of working days per year and the average number of truck loads per year. Can these -3- 0 estimates potentially double or triple? What would be the corresponding impacts if the estimates proved to be substantially on the low side? Page 15, Paragraph 2; Mitigation measures proposed for dust control (i.e. , working small areas to final or near-final grade and proceeding outward in a series of vertical lifts) should also be considered as a possible mitigation for potential aesthetic impacts. Page 17, Paragraph 5; The mitigation measures proposed in this section seem to be overly generalized. Explicit alternate grading criteria should be offered, perhaps tying into the "Project Alternative" section of the report and including a graphic presentation of the alternate grading design. This paragraph appears to have a typographical error in third sentence where "2 : 1 slopes" should be replaced with "3 : 1 slopes" . Another possible mitigation measure that should be discussed is use of a narrower "mouth" at the south end of the subject valley to limit views into the area to be mined. Page 19, Paragraph 1; This section should be expanded and modified to acknowledge that the subject property is within the adopted Sphere of Influence and Extended Planning Area the City of Dublin and is partially slated for a Business Park/Industrial; Low Coverage land use. A twenty year buildout of this has been anticipated in the City' s Draft General Plan. This implies that some development activity in the vicinity of the site may overlap with the operation of the surface mining project, which is proposed to run for a period of ten ( 10) years. Page 20, Paragraph 6; This paragraph cites a requirement that a periodic review be performed for surface mining permits with time intervals not to exceed five ( 5) years. The rapid development rates being experienced in the Tri-Valley area appear to dictate a shorter time interval, perhaps 2-3 years. A range of undiscussed potential impacts may come into play if new land uses in the vicinity are established in the proposed 10-year time frame of the surface mining permit. Page 21, Final Sentence; Additional consideration should be given to entice and/or require coordination of this surface mining permit with potential mining operations on adjoining parcels to the west. The impacts cited in this section of the Draft EIR do not necessarily have to be "Unavoidable Adverse Impacts" . Various approaches seem to be available to secure the desired coordination between the adjoining properties. One approach would be a requirement imposed on the applicant of the subject permit requiring him to demonstrate he has diligently pursued an agreement with the adjoining property owner to coordinate grading activity at the shared property line (s) . The applicant could also be required to show how the proposed Mining Plan would interface with potential future mining of the adjoining property, or properties, to the west. Another approach would be to require the applicant to record the necessary agreements that would provide coordination with the adjoining property to the west if and when that property files a separate Surface Mining Permit. The adjoining property owner could then be required to record the corresponding documents if and when he submits an application for a Surface Mining Permit, thereby allowing the previous agreement to be exercised. Page 23, First Paragraph: As mentioned elsewhere in this transmittal, it appears that additional analysis should be made in an attempt to find a manner to entice/require coordination between the subject property and adjoining properties to the west to allow a move efficient- mining operating and allow for a diminishment of the potential adverse aesthetic impacts associated with the subject project. -4- 0 Figure 2, Vicinity Map; This map should graphically depict the adopted sphere lines of the three cities involved. A separate map may be appropriate to indicate the respective general plan designations each city has adopted in its adjoining sphere area. The City of Dublin appreciates the opportunity to comment on this Draft EIR. If you have any questions regarding this matter, please contact Kevin J. Gailey of the Dublin Planning Department. -5- RECEI � tD J P%1\1 198 NOTICE OF PUBLIC HEARING pIyLIN PIA SURFACE MINING PERMIT SMP-18 Notice is hereby given that the Alameda County Planning Commission will hold a public hearing to consider SURFACE .4,MINING PERMIT SMP-18, application of Robert D. Branaugh for approval of a Surface Mining Permit and Reclamation Plan to`;allow mining over -a ?;10 -r year .:period an -approximately :30 acre area of "'a f39.8 :`acre ' parcel located at 1881 :Collier Canyon Road,' north side, approximately 0.6 miles west of Doolan Canyon Road, Livermore area, unincorporated Alameda County. Said public hearing will be held on Monday, the 4th day-'of `February, x 1985, beginning at 6:00 p.m., in the Auditorium of the Alameda County Public Works Building, 399 Elmhurst Street, Hayward, California. A Draft Environmental Impact Report for this project has been prepared pursuant to the California Environmental Quality Act. Copies of the Draft EIR are available at Valley libraries and from the Alameda County Planning Department, Public Works Building, 399 Elmhurst Street, Room 136, Hayward, California 94544. Responses to the Draft EIR must be received prior to February 20, 1985, in order to be considered. All persons interested in the matter may appear and be heard at this meeting. WILLIAM H. FRALEY - PLANNING DIRECTOR & SECRETARY COUNTY PLANNING COMMISSION OF ALAMEDA COUNTY TELEPHONE: (415) 881-6401 EXHIBIT 3 G O SMP -18 BRANAUGH QUARRY Collier Canyon Road Draft Environmental Impact Report January 1985 EXHIBIT 4- 0 I SUMMARY IIRobert D. Branaugh has requested approval of a Surface Mining Permit (SMP-18) to permit mining over a 10 year period an approximately 30 acre portion of a I 39.8 acre parcel located at 1881 Collier Canyon Road, adjacent and northerly of Collier Canyon Road and approximately 0.6 miles westerly of Doolan Road, unincorporated Alameda County, Assessor's Parcel No. 99B-3200-4-4. IThis Draft Environmental Impact Report identifies the following principal impacts which would result from carrying out the project as proposed, with mitigation measures given where such measures would alleviate impacts: 1. Potential for erosion and sedimentation. Mitigation: Require a Grading Permit to be obtained, so that a comprehensive erosion and sedimentation control plan can be approved and implemented to the satisfaction of the Director of Public Works. Require commitment and adherence to a detailed reclamation program for resoiling and revegetating the site. ii2. Potential for excess surface water runoff and groundwater collection in the quarry area. Mitigation: Require installation of adequate subdrains and drainage channels. 1 3. Potential for surface water contamination possibly leading to groundwater contamination. Mitigation: Require surface water subject to contamination to be retained on site. 4. Potential loss of wildlife habitat. Mitigation: Require commitment f and adherence to a detailed reclamation program for resoiling and revegetating the site. III 5. Generation of 400-900 truck trips daily on peak days, causing potential deterioration of Collier Canyon Road and contributing to future need for road improvements. Increase of 12-18% in traffic at Airway Boulevard/I-580 interchange on peak days of operation; no significant IIIeffect on interchange operations. Mitigation: Require operator to establish a trust fund for road cleanup and repair. Require operator to contribute proportionate share for nearby road improvements. 111 6. Generation of noise, primarily affecting two residences on the Collier Canyon Road haul route. Partial Mitigation: Various noise reduction IIIstrategies. 7. Potential dust generation. Mitigation: Require frequent sprinkling, shakedown berms for trucks, more limited operating hours, other dust control measures. 8. Adverse aesthetic impacts caused by presence of mining, large exposed II and visible quarry face, and ultimate artificial land contours, visible from 1-580. Partial Mitigation: Require flatter and more rounded final slopes. 11 i I II 0 0 Alternatives discussed include "No Project," which would eliminate impacts at i the site but may increase cost of the commodity and, to the extent demand for fill must be met by more distant operations, energy consumption and air pollution may increase. Alternative quarry sites to supply fill material are Iavailable; some have greater, some lesser impacts. An alternative of coordinating mining with the property immediately adjacent i li to the west was found to be environmentally superior to the proposed project, as it would allow an increase in marketable material to be mined while being less visible from 1-580 and reduce the need to mine the easterly hill on site so extensively. Coordination of mining among the existing Bexley Quarry two properties to the west, the intervening Righetti property, and the subject property, would enable all properties to be mined to the property line, thus maximizing use of the fill resource, while potentially creating a useable, , 11 aesthetically decent land area upon reclamation. THIS SUMMARY IS NOT INTENDED AS A SUBSTITUTE FOR READING THIS ENTIRE REPORT. II 1111 . ill 1 ,,, il • I ' i I ii III -A •0 0 CO o3 (tit ` ' 2 CO ilo to 0 C, ewat.40:411414116.10,41.--t a r v% 1 .,-- - rr- 1/-: i '' '' •' .."/t ' ■ 4 . ` Vill CD al, '- , \•iFccii, 4, 4 / • ',.. , I , ' , •o ' At: , ... 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