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Home My WebLink About06/13/1978M I N U T E S ADJOURNED MEETING OF THE CITY COUNCIL CITY OF SAN LUIS OBISPO TUESDAY, JUNE 13, 1978 - 12:20 P.M. COUNCIL HEARING ROOM, CITY HALL, 990 PALM STREET STUDY SESSION Roll Call Councilmen PRESENT: Ron Dunin, Steve Petterson, Allen Settle and Mayor Kenneth E. Schwartz ABSENT: Jeff Jorgensen City Staff PRESENT: J.H..Fitzpatrick, City Clerk; R:D. Miller, Administrative Officer; Gordon Johnson, Personnel Director; Henry Engen, Community Development Director; Jim Stockton, Director of Parks & Recreation; Roger Neuman, Police Chief; Richard Minor, Fire Chief; Rudy Muravez, Finance Director; Dave Romero, Public Services Director; Wayne Peterson, City Engineer ------------------------------------------------------------------- - - - - -- 1. The City Council continued their study of the Proposed 1978 -.79 City Budget, starting with IV -25 through V -3. 2. Continued to 7:30 p.m., Tuesday,.June 13, 1978. APPROVED: July 18, 1978 � Yy��F4ffzpatrick, City Clerk -------------------------------------------------------------------------- M I N U T E S ADJOURNED MEETING OF THE CITY COUNCIL .CITY OF SAN LUIS OBISPO TUESDAY, June 13, 1978 - 7:30 P.M. COUNCIL HEARING ROOM, CITY HALL, 990 PALM STREET STUDY SESSION Roll Call rnimni loran PRESENT: Ron Dunin, Steve Petterson, Allen Settle and Mayor Kenneth E. Schwartz ABSENT: Jeff Jorgensen City Staff PRESENT: J.H. Fitzpatrick, City Clerk; R.D. Miller, Administrative Officer; Richard Minor, Fire Chief; Roger Neuman, Police Chief; Henry Engen, - - - - - -- Community Development Director;.Wayne Peterson, City Engineer - - - - -- -------------------------------------------------------------- 1. City Council Members reported on Activities of Standing Council Subcommittees: A. Area Council of Governments Councilman Allen Settle B. C.C.C.J.C. Councilman Steve Petterson D. Water Advisory Board Mayor Kenneth E. Schwartz F. Zone 9 Advisory Committee Councilman Ron Dunin M City Council Minutes June 13, 1978 Page 2 2. Wayne Peterson, City Engineer, submitted a proposal for Council's consideration of a change in the City's Hydraulic Design Criteria. He stated that the existing adopted design criteria was difficult for the staff to enforce due to the fact that many of the older parts of the City had so many small storm drains that when a property owner wished to add a small section. across their property, the design was not compatible with the size of the culverts up- and -down stream. In some instances, upstream culverts restricted the flow to a degree that the 100 -year design flow could not possibly reach the area In other cases, downstream culverts restricted the flow in such a way that, should they enclose.the pipe, the water would come out upstream and might cause damage to other areas due to flows being diverted down streets. The proposed design results in-smaller pipes and drop inlets while they did cause some local flooding, they helped to slow the flow of water and level out the peaks so that downstream problems were minimized. Local streets and yards became holding areas during a major storm, but buildings were not flooded if built to the design elevation. Finally, Wayne Peterson recommended that the Council consider adopting a new design standard for drainage similar to the criteria used by the County of San Luis Obispo as follows: 1. Those waterways defined as having drainage areas of over 4 sq. miles will be designed for a 100 -year frequency storm. 2. Secondary waterways which have drainage areas between 1 and 4 sq. miles shall be designed for a 25 -year frequency storm with freeboard. 3. Minor waterways which have drainage areas of less than 1 sq. mile shall be designed-for a 10 -year frequency storm with freeboard. 4. All new building pads being created shall have the first f elevation a minimum of 1 ft. above the 100 -year storm flow 5. All new residential buildings going on existing lots shall floors above the 100 -year flood design elevation or in the ercial buildings shall be flood proofed to 1 -1/2 ft. above flood design elevation. Loor elevation. have finished case of comm- the 100 -year 6. Streets are to be designed to contain a 10 -year frequency storm within 6 or 8 inch curbs to the approval of the City Engineer. Any additional discharge from a 10 -year storm shall be carried underground in storm drains. 7. Hydraulic gradients in culverts flowing under pressure shall be maintained a half foot below inlet grates and manhole covers of all structures. 8. Additions to existing culverts shall be sized in relation to the practical quantity of water that can reach that location and which can safely be carried considering downstream restrictions. 9. No new improvement should be allowed which would divert flood water should it become overtaxed, to another location that formerly was not being affected by flood flows. D.F. Romero, Public Services Director, reminded the Council that the current 100 -year design criteria was adopted.in the emotional days following the 1973 flood and in some cases had proven to be impractical. He added that it was the highest design criteria in the State of California. He continued that attempts to adhere strictly to the adopted criteria had resulted in impractical designs such as putting in a large pipe to close a gap between two runs of much smaller pipe: He concluded his statements by stating that the standards recommended by Wayne Peterson were excellent and he felt it represented a practical solution and would protect most buildings in the City from flooding. The City Council discussed with Wayne Peterson, D.F. Romero and the public present, the impact that their proposed relaxation of Council adopted flood and drainage design standards would have on the community. City Council Minutes June 13, 1978 Page 3 Councilman Settle stated that it was a difficult decision. He felt that the City staff had stated that their proposals were cost - effective and that more improvements could be made with funds available. He felt he could support the staff's proposal. Councilman Dunin stated he did not wish to reduce the flood protection criteria in the City after the floods the City had experienced over the past few years. In fact, he felt the present flood control system did not work very effectively during the 1977 and 1978 heavy rains. Councilman Petterson stated that he would support the staff recommendation. He had never agreed with the Council's adopted 100 -year flood criteria. He felt that a lesser span was adequate and the City could stand.some flooding in some areas and to a limited extent. Mayor Schwartz questioned the practicality of reducing a standard that had been adopted by the Council to protect the property and citizens of the City a number of years ago. He felt that, rather than relax standards, something should be done to guarantee protection to life and property. The matter was continued for discussion with Item 3. 3. Wayne Peterson, City Engineer., reviewed for the Council, information from the HUD Flood Maps prepared by the Corps-of Engineers which defined areas in the City subject to flooding. The map showed insurance rates for properties eligible for flood insurance. The maps also showed: 1) Areas subject to sheet flow.of water that has jumped out of the creek; and 2) Areas with less than 1 ft. of flooding during a 100 -year storm; and ' 3) Flood planes on middle San Luis Obispo Creek from the confluence to the south City limits. The floodway was an area set aside in which no additional encroachment would be allowed. The theory was that all flooded areas outside of the floodway might be filled-without causing the flood waters within the floodway to rise more than 1 ft. To eliminate a floodway, an adequate creek channel must be built. To build in a floodway, an existing encroachment must be removed to compensate for the new construction. Any construction that occurred in an area shown subject to flooding (Zone A) must be flood - proofed in either of two ways: a) Residential projects must have all.floors subject to habitation a minimum of 1 ft. above the flood level. b) Non - residential buildings may either have floors 1 ft. above the flood elevation be flood- proofed with walls 1 -1/2 ft. above the flood elevation. Wayne Peterson continued that the City Council would soon be asked to adopt a flood plane management•6rdinance whic.h.would control development in all areas designated A and B with the primary goal of preventing flooding of new buildings and minimizing additional flooding to existing developments. Finally, Wayne Peterson stated that the Army Corps of Engineers had taken jurisdiction of the major creeks throughout the City and that they would require a "404" Permit prior to any encroachment into existing waterways. By common consent of the Council, the. staff was authorized to proceed with the HUD processes and then prepare the required flood plane management ordinances for future Council consideration. The City Council then discussed Item 2, the Criteria for Drainage Design Standards, in light of the report submitted by Wayne Peterson on the HUD flood Plane Maps. City Council Minutes June 13, 1978 Page 4 On motion on Councilman Petterson, seconded by Councilman Settle, that the staff be directed to prepare a resolution for Council consideration establishing Council Policy on amending the drainage design standards and criteria of the City. Motion carried with Councilman Jorgensen absent. 4. 9:40 p.m., the Council adjourned to Executive Session to discuss property acquisition. 10:25 p.m., the City Council reconvened in Regular Session. 5., The City Council continued their study of the Proposed 1978 -79 City Budget beginning with Page V -5 through A =3 thereby completing the first run through of the proposed budget. 6. There being no further business to come before the Council, Mayor Schwartz adjourned the meeting at 11:40 p.m. to 12:10 p.m., Monday, June 19, 1978. APPROVED: July 18, 1978 ;A' `i zpatrick, City Clerk M I N U T E S ADJOURNED MEETING OF THE CITY COUNCIL CITY OF SAN LUIS OBISPO MONDAY, JUNE 19, 1978 - 12:10 P.M. HEARING ROOM, CITY HALL, 990 PALM STREET STUDY SESSION Roll Call Councilmen PRESENT: Ron Dunin,.Jeff Jorgensen, Steve Petterson, Allen Settle and Mayor Kenneth E. Schwartz ABSENT: None City Staff PRESENT: J.H. Fitzpatrick,.City Clerk; R.D. Miller, Administrative Officer; R. Muravez, Finance Director Promotional Coordinating Committee PRESENT: Sally Punches, Ron Ratcliffe and Art Willard Human Relations Committee PRESENT: Joe Turner -------------------------------------------------------------------------- 1. City Council continued their study of the 1978 -79 Proposed City Budget with the following agencies: A. Promotional Coordinating Committee (P. II -15)