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HomeMy WebLinkAboutMINUTES - 09181990 - 2.3 Z-003 TO: BOARD OF SUPERVISORS AS GOVERNING BODY OF SANITATION DISTRICT NO. 15 FROM: J. MICHAEL WALFORD, CHIEF ENGINEER DATE: September 18, 1990 SUBJECT: Referral of August 21, 1990: Sanitation District No. 15 Emergency Storage Pond Fence project. Project No.: 7392-6X9L.84-90 SPECIFIC REQUEST(S) OR RECOMMENDATION(S) &BACKGROUND AND JUSTIFICATION I. Recommended Action: ACCEPT report from Chief Engineer on Sanitation District No. 15 Emergency Storage Pond Fence project and DIRECT Chief Engineer to proceed with project. II. Financial Impact: Completion of a previously awarded contract for $61,314.50, funded;by Sanitation District No. 15 (100%). III. Reasons for Recommendations and Background: R. J. Law owns property adjacent to the Sanitation District No. 15 emergency storage pond site. R. J. Law's letter of August 1, 1990 to the Board of Supervisors raises concerns about the emergency storage ponds and the project to fence the District's property. In 1978 Sanitation District No. 15 purchased the site from Boyd Development Company. The company had built a sewage treatment plant on the site to service the Willows Park Marina condominium project. In early 1979 the Sanitation District sewer collection system became operational and pumped sewage to the plant for treatment. On November 23, 1983 the sewage Continued on Attachment: X SIGNATURE: --� �` _ RECOMMENDATION OF COUNTY ADMINISTRATOR _ RECOMMENDATION OF BOARD COMMITTEE APPROVE OTHER SIGNATURE(S): ACTION OF BOARD ON Se��?�a� r;..,1$., _1990.. APPROVED AS RECOMMENDED1 X OTHER VOTE OF SUPERVISORS X UNANIMOUS (ABSENT III ) AYES: NOES: ABSENT: ABSTAIN: I hereby certify that tris Is a um and correct copy of an action taken and entered on the minutes of the EJS:drg Board of Supervisors on the date shown. c\BO:18.t9 ATTESTE13: SEP 18 199n PHIL BATCHELOR.Clerk of the Board Orig. Div: Public Works (Design Division) of Supervisors and County Administrator cc: SD 15 SD 15 CAC "'"vepuw J. Kerekes, Construction D. Heisch, Ref'I 1.46 8/21/90 i i Referral of August 21, 1990: Sanitation District No. 15 Emergency Storage Pond Fence project. September 18, 1990 Page Two III. Reasons for Recommendations and Background Cont'd.: flow was diverted to the Oakley Bethel Island Sewage Treatment Plant (OBI).' The sewage treatment ponds were retained for emergency storage in the event the force main to OBI is not usable. In December, 1986 a force main valve began to leak and the sewage flow was ,diverted to the storage ponds. The south ponds were full and sewage was being storied in the north pond prior to the force main being repaired. When the north pond was 3/4 full, water began to flow into Law's backyard. It was never determined if the flow was ground water being squeezed from under the ponds by the weight of the sewage or if it was the sewage seeping out,;of the storage ponds. Subsequently, the north pond was lined to prevent any leaking and ',OBI has been notified that all repairs to the force main must be completed prior to,the pond filling (approxi- mately 72 hrs.). It is imperative that the storage pond site be retained as a place to temporarily,,store sewage when there is a problem with the force main to Oakley. The storage pond has been used four times in the last twelve months. Without the Emergency Storage Ponds the sewage would have been pumped into Dutch Slough. In 1988 R. J. Law sent a letter to Sanitation District No. 15 claiming the existingfence was not providing adequate security to the site. The Sanitation District No. 15 Citizens Advisory Committee requested that a eight foot high chain link fence be installed around the property. During the preparation of the fence plans it was discovered that the':existing fence was about 20 feet inside the property line. The Citizens Advisory Committee was informed of this and they requested that the fence be placed on the property line. The fence project consists of clearing and grubbing a strip along the property line, placing fill as necessary to provide a level working surface and installing an eight foot high chain. link fence on the property line. The project has been determined to be exempt from' the California Environmental Quality Act as a Class 1 b Categorical Exemption, Section 15301. The project was approved by the Board of Supervisors on July 10; 1990. A Notice of Exemption was filed with the County Clerk. Reclamation District No. 799 has reviewed the fence plans and determined that,the project will not affect any of their drainage channels. The drainage corridor.will not be na'r'rowed nor will any active ditch be filled. The drainage ditch on R. J. Law's property is a private ditch not maintained by the Reclamation District. An application for a U. S. Army Corps of Engineers permit has been submitted. A field meeting between the District and the Corps was held on August 29, 1990. It was determined that to mitigate the impacts of construction, four willow sprouts will be planted for each tree removed and the riparian vegetation will be permitted to regrow in the area disturbed by:construction. It is recommended that the Board DIRECT that the fence be installed.. IV. Consequences of Negative Action: If the fence is not built the County will be obligated for the cost to cancel the contract and the District will continue to be exposed to the liability of trespassers and encroachment.