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HomeMy WebLinkAboutMINUTES - 11041986 - 1.43 1-043 TOBOARD OF SUPERVISORS n,,,,+ FROM: Harvey E. Bragdon lira Director of Communtiy Development Cbst DATE: October 24, 1986 Courcy SUBJECT: Approval of draft application for Coastal County Offshore Energy Assistance Block Grant. SPECIFIC REQUEST(S) OR RECOMMENDATION(,S) a BACKGROUND AND JUSTIFICATION RECOMMENDATION Authorize the Director of Community Development to apply to the State Secretary of Environmental Affairs, (SEA), following program review by the Bay Conservation and Development Commission (BCDC) , for a grant of $128,053 to study the role of natural gas extraction in subsidence. FINANCIAL IMPACT None. BACKGROUND Contra Costa County is eligible to apply for a block grant in an amount up to $128,053 from the State SB 959 (Coastal County Offshore Energy Assistance) program. No matching funds are required. The County's proposed program must be reviewed and approved by the Bay Conserva- tion and Development Commission after public hearings, then forwarded to the State Secretary of Environmental Affairs for final approval . A copy of the draft proposal and application are attached. The Community Development Department proposes a program which would use funds to assist the State Department of Water Resources to study the impact of natural gas extraction from under- water State lands in Contra Costa County on subsidence. Two public hearings have been held, September 22 and October 6, and response to the draft program was entirely favorable. The proposed grant program responds to Board Order of March 12, 1985, requesting numerous State, Federal , and local agencies to study subsidence (and liquefaction) in Contra Costa County; Board Resolution 85/549 directing staff to locate sources of revenue to assist State subsidence studies, and board inquiries to staff on an appropriate subsidence study funding mechanism. The draft program is attached. Board members were informed of the Community Development Department's intent to apply by letter to individual Supervisors of September 23, 1986. TN/jn 5c:energy6 CONTINUED ON ATTACHMENT: - YES SIGNATURE' RECOMMENDATION OF COUNTY ADMINISTRATOR RECO4 fkt� W4ION OA D COMMITTEE APPROVE OTHER SIGNATURE(S): ACTION OF BOARD ON _ November , 1986 APPROVED AS RECOMMENDED X OTHER VOTE OF SUPERVISORS I HEREBY CERTIFY THAT THIS IS A TRUE X UNANIMOUS (ABSENT - ) AND CORRECT COPY OF AN ACTION TAKEN AYES: NOES: AND ENTERED ON THE MINUTES OF THE BOARD ABSENT: ABSTAIN: OF SUPERVISORS ON THE DATE SHOWN. CC: County Administrator ATTESTED _ November 4 , 1986 CAO PHIL BATCHELOR, CLERK OF THE BOARD OF Auditor-Controller SUPERVISORS AND COUNTY ADMINISTRATOR , State of California (2) M382/7-83BY DEPUTY DRAFT COASTAL RESOURCES AND ENERGY ASSISTANCE (SB 959) BLOCK GRANT PROGRAM The program, pursuant to Division 25 (Section 35000 and following sections) of the Public Resources Code of the State of California, will provide block grants to coastal counties including counties within the jurisdiction of the (San Francisco) Bay Conservation and Development Commission. Grants may be awarded for the purposes of planning, assessment, mitigation, permitting, mon- itoring and enforcement, public services and facilities, and for other activi- ties related to off-shore energy development, consistent with the requirements of the state's coastal management program. Subsidence is known to accompany the extraction of gas and oil with hundreds of examples worldwide. Less commonly, subsidence accompanies the extraction of gas which is not associated with oil (non-associated gas) . Subsidence is known to be occurring or has occurred in northern and eastern Contra Costa County - largely within the delta, where much state land lies, and also where major non-associated gas pools are located. The amount and rates of subsidence need to be measured, the various increments of subsidence from each of several causative factors - extraction of natural gas and/or groundwater, peat oxidation, and settlement - need to be identified, and for man-induced causes, mitigation could then be planned and applied. Such a subsidence-measuring program has begun, sponsored by the California Department of Water Resources' (DWR) Central District. The area of interest of the Central District encompasses much State submerged and park land, some of which is being actively prospected for gas. The Central District bounda- ries overlap the Bay Conservation and Development Commission boundaries in Suisun Bay. The gas-producing areas provide an opportunity to measure total subsidence - amount and rate - in places where the sum of subsidence may be due to a combination of gas extraction, groundwater withdrawal , and oxidation and/or settlement of soft peat or highly organic soils. It is intended to assist and support the DWR study from the block grant pro- gram by establishing subsidence monitoring stations that are expected to con- tribute to an understanding of the relation of gas extraction to the subsi- dence. Currently this is in the vicinity of Bethel Island, Oakley, and near Webb tract on the edge of the Sherman Island gas field. Coastal Reources and Energy Assistance Page 2 (SB 959) Block Grant Program WORK ELEMENTS The program has four elements: 0 Construction of two subsidence recording stations. o Precise level surveys tying the subsidence recording stations to the DWR network of precise bench marks. o Evaluation of increased flood hazard potential . o Program administration. OBJECTIVES The objectives are to measure total subsidence at places where, if it is oc- curring, it may be influenced by gas extraction. Based on measured amount and rate of subsidence, conclude whether permitted gas extraction significantly increases flood hazard, and if so, (1) to evaluate the contribution of gas extraction (and groundwater use) to the total subsidence and increased flood hazard, and (2) to develop appropriate mitigation. PRODUCTS Two products would result from the program: o Recording stations and bench marks of a near-permanent nature, usable indefinitely for continuing subsidence study. o Reports evaluating contribution of gas extraction to total subsidence on at least a short-term basis. PLANNING AND ENERGY PRODUCTION Current planning for orderly development in low-lying parts of Contra Costa County is hindered by adequate understanding of flood hazard potential , and of its potential to increase due to subsidence. This results from (1) lack of up-to-date precise elevation data and (2) lack of detailed, local knowledge on the amount and rates of subsidence attributable to man-made and natural caus- es. The data obtained in this program should be put to immediate and long-term use for general and site-specific planning. The results of the pro- gram would be used to evaluate mitigation measures proposed with projects in state lands and elsewhere in the County, which is a leader in the production of non-associated natural gas. At this time planning largely neglects any contribution of subsidence to in- creased flood hazard, based largely on the lack of management of the subsi- dence and resultant difficulty evaluating flood hazard potential . Coastal Reources and Energy Assistance Page 3 (SB 959) Block Grant Program SCHEDULE o Monitoring station construction: February 1987 through December 1987 o Precise levelling: July 1987 through December 1988 o Evaluation report: January 1989 through March 1989 BUDGET The program budget allocates 55 percent $71,000) of the grant request to con- struction of two monitoring stations; 17 percent ($22,000) to precise level- ling, 23 percent ($30,000) to administration, and 4 percent ($5,000) for end-product report preparation. See Exhibit 1. Applicable laws and regulations: CEQA (See Initial Study and Notice of Prepa- ration of a Negative Declaration of Environmental Significance, attached. ) Contra Costa County is subject to jurisdiction of Bay Conservation and Devel- opment Commission. PUBLIC COMMENTS Results of public hearings on September 22 and October 6 will be summarized in the final program application. TN/jn 5b:sb959.txt Secretary of Environmental Affairs Coastal County Offshore Energy Assistance Program Program Element Budget San Francisco Bay Area Counties 1 . Applicant/Payee : Name Contra Costa Count Street Address - bbl Pine Street 4th Floor North Win City/Zip Martinez, 2 . Contact Person : Name Todd Nelson Phone Number 415 372-2024 3 . . Proposed Funding Period .from to 4 . Proposed Budget( attach supporting schedules for each line item) : Expenditures : Line Item Dollars A . Salaries and Wages $ 32.000 8 . Operating Expenses S. 3,000 53 C . Consulting Services s 93,0@t 0 . Construction Expenses $ (71,053) E . Fixed Assets $_ _0_ Total, Proposed -0- Total, Proposed Expenditures s 128,053 Funding : A . Proposed Funding 5 128,053 S . Certification : 1 certify to the best of my, knowledge and belief , under penalty of perjur that data in this budget are true and correct . Grantee Signature : Date : Name and Title: Harvey E. Bragdon, Director of Community Development 6 . Bay Conservation and Development Commission Approval : Signature : Date : 7 . Grant Manager Approval : Signature : Date : B . Chief , Office of Offshore Development Approval : Signature : Date : 9 . Chief , Air Resources Board Fiscal Branch Approval : Signature : Date : 'State �f California DEPARTMENT OF WATER RESOURCES The Resources Agency ..t OFFICE MEMO TO: DATE: _ . August 30, 1985 ' Carl Hauge SUBJECT: Preliminary Cost Estimate for FROM: Compaction Indicator Construction George Newmarch Following are preliminary estimates for the construction of two compaction indicators to measure subsidence in the Sacramento-San Joaquin Delta . One indicator would measure compaction between 0 and 50 feet in depth. The other indicator would measure compaction between 0 and 400 feet in depth. Summarized estimates are: _ Drilling $10,000 Electric Log 1 ,000 Soils Laboratory Testing 200 Recording Equipment & Supplies 12,900 Installation of recording Devices , 11 ,400 Field Supervision, and Project Adminis- tration by Central District Personnel Total for Two Compaction Indicators $35,500 at a Common Site Details on estimated costs of specific items are attached. Attachments 4 Mft O DWR 100a (Est. 1/80) OVER Electric Log Item Estimated Cost Electric log of 400-foot well Range: No charge if done by DWR geologist with borrowed equipment to $1 ,000 if contracted. Soils Laboratory Testing Item Unit Cost Estimated Cost Grain size analysis, $ 50 each $200 4 cutting samples Recording Equipment and Supplies Item Unit Cost Estimated Cost for Both Holes Recorder, Stevens, Type F. 10:1 $1 ,200 $2,400 and accessories. 2 each. Special collar formodification 150 300 of recorder. 2 each Boston gear, G-188 for 50 100 recorder. 2 each Compaction pipe, 2-inch $2/ft 904 diameter, Schedule 80, black, 452 feet Slip joint, 5 feet long closed, 100 each 100 8 feet long expanded. 1 each Miscellaneous connectors 100 Clamps , hardware, cement Pressure recorder, Bristol , 1 ,500 each 3,000 Range 0-100 with 30-day clock, 2 each . Airline, 150 feet, 1/4-inch 35 coil 105 copper, continuous with of 50 ft 1/4-inch galvanized section on bottom Nitrogen, 2 cylinders for 15 each 60 each well Nitrogen regulator, 2-stage, 200 each 400 1 for each well Compaction table, steel 250 each 500 3-legged &. flucrum for compaction pipe -2- Recording Equipment and Supplies (cont) Item Unit Cost Estimated Cost for Both Hole Tractor with auger & operator $50 hour $400 for drilling, three 12-foot deep holes for compaction table legs at each site - Compaction table legs; concrete and supplies 50 each well 100 Concrete base, forms , 125 each - 250 readymix, hardware Building, 8 ft x 10 ft, 2,000 each 4,000 steel , insulated. 1 for each well Miscellaneous hardware 100 each well 200 and accessories Total , Recording Equipment $12,919 and Supplies Recording Devices Installation, Field Supervision, and Project Administration by Central District Personnel Est. Hourly Item Hrs . Rate* Estimated Cost Contract writing Senior Engineering Geologist 8 $51 .55 $412 Associate Engineering Geol . 40 44.72 1 ,789 Delineator 8 33.28 266 Equipment and supply acquisition Associate Engineering Geol . 4 44.72 179 Student Assistant 16 18.16 291 I Field Logging & supervision Senior Engineering Geologist 12 51 .55 619 Associate Engineering Geol .' 12 44.28 - 531 Assistant Engineering Geol . 56 36.73 2,057 Recorder installation & servicing Water Resources Eng. Tech. (2) 80 35 .38 2,830 Per Diem, 4 days x 2 people 75/day 600 7/1/85 rate -3- � M I Trip to Arizona to see USGS Installation Air Fare 250 Per Diem, 3 days 225 Salary, Sr. Engr. Geol . 3 days 1 ,237 Car rental & Miscel . Trans . Costs 150 Total for installation, supervision, $11 ,436 Administration -4- Delta Subsidence Compaction Indicators Preliminary Cost Estimates DETAILS Drilling Drill Wells : One well 50 feet deep ) Hole diameter 8 inches One well 400 feet deep j- Install standard steel casing, 6-inch diameter, with spacers. Perforate in permeable zones . No gravel pack. Lower compaction pipe, 2-inch diameter, schedule 80, black and ' cement at bottom of well . Take cutting samples each 10 feet. Contractor Estimated Cost for Both Holes Remarks Company A $119250 Move-in and out and rasing included Company B 9,600 Move in and out and casing included Company C 319000 Do not have equipment for the 400 ft hole cost would be about $1000 for 50-foot hole; includes move in/out and casing. Company D 10,000 Move in/out and casing included Preliminary estimate based on above information: $10,000 NOTICE OF A PUBLIC HEARING You are hereby notified that on September 22, 1986 and October 69 1986 at 1:30 p.m. in Room 107, County Administration Building, 651 Pine Street, Martinez, California, the County Zoning Administrator will consider Coastal Resources and Energy Assistance Grants, described as follows: COASTAL RESOURCES AND ENERGY ASSISTANCE GRANTS: This is a public hearing pursuant to Senate Bill 959 (Division 25 (Commencing with Section 35000) of the Public Resources Code). Comments are solicited on. the Block Grant Program Report to the State Secretary for Environmental Affairs. Copies of the report are available from the Contra Costa County Community Development Department, 651 Pine Street, 4th Floor - North Wing, Martinez, California. For further details, contact the County Community Development Department in Martinez or phone Todd Nelson at 372-2024. Harvey E. Bragdon, Director Contra Costa County Community Development Department For purposes of compliance with the provisions of the California Environmental Quality Act (CEQA)) a Negative Declaration of Environmental Significance (no Environmental Impact Report required) has been issued !or this project.