Loading...
HomeMy WebLinkAboutMINUTES - 01181994 - H.6 H. 6 �TO: BOARD OF SUPERVISORS FROM: J. MICHAEL WALFORD, PUBLIC WORKS DIRECTOR HARVEY BRAGDON, DIRECTOR OF COMMUNITY DEVELOPMENT DATE: January 18, 1994 SUBJECT: MODIFICATION OF CONDITIONS OF APPROVAL FOR SUBDIVISION 7840 IN THE PACHECO AREA. Specific Request(s)or Recommendation(s)&Background&Justification I. Recommended Action: 1. MODIFY Conditions of Approval, development plan, and tentative map plans as outlined in the following Exhibit. 2. APPROVE the closure of Elder Drive and DIRECT the Public Works Director to locate the closure as far south as possible on the existing road alignment without sacrificing safety, and report his findings back to the Board. 3. APPROVE the installation of a three way stop at the intersection of Deodar Drive and First Avenue South. 4. DIRECT the Public Works Director to investigate the need for stop signs at various intersections in the vicinity of the former Pacheco school site and report his findings back to the Board. II. Financial Impact: None for the County. III. Reasons for Recommendations and Background: These changes were coordinated between Public Works and Community Development Department staffs and both concur in these recommendations. Subdivision 7840 is an. infill project on the old Pacheco School site. The property is bounded by Center Avenue, Second Avenue South, Deodar Drive, and Elder Drive. The existing vertical alignments of Elder Drive and Deodar Drive are substandard. Deodar Drive and Elder Drive were constructed many years ago and do not meet today's design standards. The proposed project of 71 dwelling units will have homes that front along Deodar Drive, Elder Drive and Second Avenue South. As a result, the roads are required to be brought up to today's standards. Continued on attachment: x yes SIGNATURE: ^4 RECOMMENDATION OF N ADMINISTRATOR RECOMMENDATION OF BOARD COMMITTEE APPROVE OTHER SIGNATURE(S): ACTION OF BOARD ON: January 18 , 1994 APPROVED AS RECOMMENDED X OTHER VOTE OF SUPERVISORS X UNANIMOUS (ABSENT I I , I I AYES: NOES: ABSENT: ABSTAIN: Contact: R. Mitch Avalon (510) 313-2235 RMA\kd\cl c:BO\BO18c.t1 Orig. Div.: PW(Engineering Services) cc: County Administrator Auditor-Controller V. Alexeeff, GMEDA Director, Community Development I hereby Building Inspection, Grading Division y certify that this is a true and correct Public Works copy of an action taken and entered on the Transportation Engineering minutes of the Board of Supervisors on the Accounting, R. Gilchrist date shown Traffic Engineering ATTESTED: Braddock & Loggan PHIL BAT ELOR, erk of the Board Wally Wiggs, Cfiair PMAC of ervis and Co ty dministrator By o Deputy MODIFICATION OF CONDITIONS OF APPROVAL FOR SUBDIVISION 7840 January 18, 1994 Page Two Late in November of 1993, the developer's engineers submitted their final design for reconstructing Elder Drive and Deodar Drive. At that time, it was recognized there would be a tremendous impact to the surrounding properties if the two roads were to be reconstructed to satisfy the design speed required by the conditions of approval. In the ensuing weeks, the developer, their engineers, and our staff, worked on many different alternatives to resolve the problem. The alternatives, and the issues associated with each of the alternatives, for Elder Drive and Deodar Drive are as follows: 1. Elder Drive Alternatives a. Reconstruct Elder Drive per the conditions of approval at a 30 mile per hour design speed. b. Construct Elder Drive to a reduced design speed of 25 miles per hour. c. Close Elder Drive with a barrier at the top of the hill. Discussion The conditions of approval require Elder Drive to be constructed for a 30 mile per hour design speed. Collector roads are required to have a 30 mile per hour design speed. Elder Drive, however, is not a collector road in the classic sense, since it does not extend beyond Center Avenue or Second Avenue South. The design on Elder Drive, therefore, could be reduced to 25 miles per hour. If Elder Drive is to be a through street, the Ordinance Code requires that the pavement width must be 36 feet. If Elder Drive is not a through street, the pavement width can be reduced to 32 feet and the existing road between Center Avenue and the top of the hill at the driveway to the Centerpointe condominiums can remain intact. To satisfy a design speed of 30 miles per hour, Elder Drive would have to be lowered seven feet at the driveway to the Centerpointe condominiums. Even if Elder Drive is reconstructed to a reduced design speed of 25 mile per hour, the top of the hill at the driveway to the condominiums would still have to be lowered by approximately five feet. Issues Associated with Elder Drive Alternatives Alternative A. Reconstruct Elder Drive per the conditions of approval (30 mile per hour design speed) *Reconstruct Elder Drive and lower the hill by over seven feet *Reconstruct the existing curb, gutter, sidewalk and landscaping along the Centerpointe condominiums *Reconstruct the access, parking and landscaping within the Centerpointe condominiums *Disrupt access to the Centerpointe condominium during reconstruction of Elder Drive. e Construct retaining walls along the frontage of the house immediately south of the Centerpointe condominiums *Reconstruct the driveways to the houses south of the Centerpointe condominiums *Increase circulation in the area *Increase through traffic on Elder Drive *Potentially disrupt circulation patterns because of the change in the road network Alternative B. Reconstruct Elder Drive to a reduced design speed of 25 miles per hour *Same issues as in alternative A above except the impacts to the Centerpointe condominiums and the properties on the west side of Elder Drive are reduced. Elder Drive will still have to be lowered 5 feet at the driveway to the Centerpointe Condominiums Alternative C. Close Elder Drive with a barrier at the top of the hill *No change to the current status of Elder Drive as a dead end road *No impact to the driveway and access to the Centerpointe condominiums *No need to reconstruct curb, gutter, sidewalk and landscaping on Elder Drive along the Centerpointe condominiums *Eliminates through traffic on Elder Drive *Allows emergency access on Elder Drive between Center Avenue and Second Avenue South *Does not disrupt circulation patterns in the area, since there is no change to the road network *Reduces potential general circulation in the area *Existin homes on Elder Drive (three homes) would have to drive out to Second Avenue South instead of Center Avenue MODIFICATION OF CONDITIONS OF APPROVAL FOR SUBDIVISION 7840 January 18, 1994 Page Three 2. Deodar Drive Alternatives a. Reconstruct Deodar Drive per the conditions of approval at a design speed of 30 miles per hour. b. Close Deodar Drive with a cul de sac located at Second Avenue South. C. Reconstruct Deodar Drive to a reduced design speed of 25 mileser hour provided the intersection of Deodar Drive and First Avenue South is improved and a three way stop is installed, and Deodar Drive is widened to 36 feet of pavement. d. Close Deodar Drive with a cul de sac at Center Avenue. Discussion Deodar Drive is a collector road in the classic sense, since it is the extension of Camelback Road and connects the Pacheco area with shoppping in Pleasant Hill and the major arterials of Center Avenue and ChilpancingopTarkway: However, constructing Deodar Drive to a 30 mile per hour design speed will result in steeper driveways for the existing homes on the east side of the street. Steep driveways will reduce the safety for the residents backing out of their driveways. Our concerns on Deodar Drive relate to the density of dwelling units fronting on the street. Deodar Drive will have homes fronting on both sides of the street which results in conflicts with cars backing out of their driveways onto the road. Conflicts between cars translate into potential traffic accidents. This is the reason why arterials and major collectors are generally designed to have no homes fronting along the roacl. Another safety concern we have is the width of Deodar Drive. -The proposed width is 32 feet. If the design speed is to be reduced to 25 miles per hour, then the pavement width should be widened to 36 feet to provide more maneuvering room for the turning movements in and out of the driveways. It should be noted that if Deodar Drive is to be left open and reduced to a 25 mile per hour design speed then Elder Drive must be closed in order to gain the four feet width needed on hieodar Drive. Issues Associated with Deodar Drive Alternatives Alternative A. Reconstruct Deodar Drive per the conditions of approval (30 mile per hour design'speed) @Reconstruct Deodar Drive by lowering the hill approximately three feet and raising the low section by First Avenue South by approximately three feet *Reconstruct driveways to existing homes on the east side of Deodar Drive. @Increase safety on Deodar Drive @No change to the circulation patterns in the area, except for First Avenue South @Construct retaining walls along front yards of existing homes on east side of Deodar Drive @Maintains integrity of the circulation element @Requires closure of First Avenue South Alternative B. Close Deodar Drive with a cul de sac located at Second Avenue South @Directs project traffic to Center Avenue @ Changes circulationatterns in the area @Diverts traffic onto First Avenue South, C Street,Blackwood Drive, Flame Drive and Second Avenue South. @Increases safety for homes on Deodar Drive *Eliminates through traffic on Deodar Drive @ Creates more of a neighborhood feel for the residents of Deodar Drive *Diverts traffic to the intersection of Contra Costa Boulevard and Second Avenue South which is congested and un-signalized @Re uires a general plan amendment to remove Deodar Drive from the circulation element @Reduces traffic speeds on Deodar Drive @Impacts access to two homes at the south end of Deodar Drive @Results in retaining walls, reduced front yards and reduced rearyards for lots 1-5 @Reduces design speed of Deodar Drive between First Avenue South and the cul de sac to 20 miles per hour Alternative C. Reconstruct Deodar Drive to a reduced design speed of 25 miles per hour, provided a three way stop is installed at Deodar Drive and First Avenue South and the pavement is widened to 36 feet *Reduced impact to existing properties on the east side of Deodar Drive, as compared with alternative A above @No change to the circulation patterns in the area, except for a possible minor diversion created by the stop sign @Maintains integrity of the circulation element MODIFICATION OF CONDITIONS OF APPROVAL FOR SUBDIVISION 7840 January 18, 1994 Page Four Alternative D. Close Deodar Drive with a cul de sac at Center Avenue sEliminates through traffic on Deodar Drive *Creates more of a neighborhood feel for the residents on Deodar Drive •Increases safety for the homes fronting on Deodar Drive •Reduces traffic speeds on Deodar Drive *Changes the circulation pattern in the area *Diverts traffic onto C Street,First Avenue South,Blackwood Drive,Flame Drive and Second Avenue South •Diverts traffic to the intersection of Contra Costa Boulevard and Second Avenue South which is congested and unsignalized •Re uires a general plan amendment to remove Deodar Drive from the circulation element of the general plan Pacheco Municipal Advisory Council A meeting with the neighborhood residents was held at Supervisor Sunne McPeak's office on January 14, 1994. The above alternatives were discussed and refined. On January 17, 1994, the Pacheco Municipal Advisory Council met to discuss all of the alternatives for Elder Drive and Deodar Drive. After taking public testimony, the Pacheco Municipal Advisory Council voted to keep both Elder Drive and Deodar Drive as through streets and to construct both streets as required by the conditions of approval. SUMMARY Reconstructing Elder Drive to a design speed of 30 miles per hour or 25 miles per hour would have a tremendous impact on the existing properties on the west side of Elder Drive. To reconstruct the road as recommended by the Pacheco Municipal Advisory Council would result in lowering the hill seven feet at the entrance to the 36 unit Centerpointe condominiums. The driveway at Elder Drive is their only access. In addition, Elder Drive is currently not a through street so there would be no change to the driving patterns in the neighborhood if the road were closed, except for the two existing homes south of the Centerpointe condominiums. Reconstructing Deodar Drive to a 30 mile per hour design speed would impact the existing homes on the east side of Deodar Drive by steepening the driveways. This would alsorequire the closure of First Avenue South because of the change in grade at the intersection with Deodar Drive. The biggest issue with closing Deodar Drive is the diversion of the traffic to the surrounding local streets, and the diversion of traffic to the intersection of Second Avenue South and Contra Costa Boulevard,which is a congested unsignalized intersection. A signal at the intersection of Second Avenue South and Contra Costa Boulevard would help to reduce the diversion of traffic heading to the north and east, however, it may be several years before a signal is installed. After considering the above, staff recommends the following: I. Elder Drive Staff recommends not providing a through connection on Elder Drive by installing a barrier at the crest of the hill, just south of the driveway to the Centerpointe condominiums for the following reasons: a) Elder Drive currently is not a through road so there would be no change to the circulation patterns in the area. b) The tremendous impact to the existing properties on the west side of the road is eliminated. c) The road width can be reduced by 4 feet, which is needed on Deodar Drive. II. Deodar Drive Staff recommends granting an exception to the Ordinance Code requirement for a design speed on a collector road by allowing a design speed of 25 miles per hour for the following reasons: a) Constructing the road to a 30 mile per hour design speed would result in steeper driveways for the homes fronting on Deodar Drive which would reduce the safety of accessing the homes from the street and in backing out from the homes to the street. b) The only other alternatives identified involved closing Deodar Drive. This would result in two kinds of diverted traffic; 1) traffic diverted to local neighborhood streets that have an inadequate vertical alignment or inadequate MODIFICATION OF CONDITIONS OF APPROVAL FOR SUBDIVISION 7840 January 18, 1994 Page Five pavement width to handle the increased traffic, and 2) traffic diverted to the intersection of Second Avenue South and Contra Costa Boulevard, which is currently congested and unsignalized. The following mitigations are recommended to justify the granting of an exception: a) Improving the intersection of Deodar Drive and First Avenue South and installing a three way stop at the intersection. This will stop the flow of traffic on Deodar Drive and should prevent traffic speeds from exceeding the design speed. b) Widening the pavement on Deodar Drive to 36 feet. This can be accomplished by reducing the width of Elder Drive, if Elder Drive is not a through street. The widening on Deodar Drive will provide an additional safety margin and maneuvering room for cars backing out of their driveways onto the street. IV. Consequences of Negative Action: The conditions of approval for Subdivision 7840 would not be modified and the subdivision would be delayed, or would have to construct the improvements as required in the conditions of approval, creating adverse impacts on the surrounding properties. V. Exhibit- A. MODIFY the following components of the development plan and tentative map: 1. MODIFY theplan to close Elder Drive provided an elevated planter area is constructed across Elder Drive from curb to curb. The "planter" shall be located near the crest of the vertical curve so it can be seen safely by vehicles on Elder Drive. Concrete curbs shall be installed on each side of the "planter." The planter shall be landscaped, and shall be included in the landscaping to be maintained by he Lighting and LandscapinVistrict for this project. The "planter" shall be as wide as practicable. There shala twelve-foot wide emergency access through the planter area if required by the Fire District. This plan change shall be subject to the review of the Public Works Department and Fire District; and the review and approval of the Zoning Administrator. Prior to filingg the mapp, apply to the Public Works Department for annexation to the County. Landscaping District AD 1979-3 (LL-2) for future maintenance of landscaping and irrigation facilities in the Elder Drive "planter" area and along Center Avenue. Submit landscaping plans to the Public Works Department prior to filing the map and pay the plan review and field inspection fees. All landscaping and irrigation facilities shall e maintained by the applicant for ninety days following acceptance of the landscaping improvements. 2. MODIFY the plan to allow one stair tread to encroach into the twenty foot by twenty foot garage element at the house access to the garage. B. MODIFY the following conditions of approval: 1. MODIFY Condition 2.A to allow for the following standards for setbacks and lot size: a. Front Yard Setback All lots shall have a front yard setback to provide a minimum of 17.5 feet between the back of the sidewalk and the structures (garage). b. Side Yard Setback Lots on Center Avenue shall have a minimum side yard of four feet. c. Rear Yard Setback All lots shall have a minimum rear yard of ten feet. d. Lot Size The minimum lot size shall be 2600 square feet. 2. MODIFY Condition 17.A.1 to allow a four-foot six-inch sidewalk, width measured from curb face, instead of a six-foot sidewalk on Center Avenue. 3. MODIFY Condition 17.A.1 to require the face of curb on the west side of Deodar Drive to be 24 feet from the ultimate centerline of the road and to provide 36 feet of pavement along the Deodar Drive frontage. 4. MODIFY Condition 17.A.5 to allow the storm drain, between lots 66 and 67, to be split between the two parcels provided that an exclusive use easement is shown on the final map for either lots 66 or 67 that precludes the installation of a fence within the storm drain easement area. 5. MODIFY Condition 1733 to allow dedication of right of way on Elder Drive for fifty- two feet instead of fifty-six feet. 6. MODIFY Condition 17.0 1) to allow for a twenty-five mile per hour design speed on Second Avenue South; 2) to allow a twenty-five mile per Dour design speed on Deodar Drive and 3) to allow the existing vertical alignment to remain on Elder Drive from Center Avenue to the top of the crest. The new portion of Elder Drive, south of the crest, shall be designed for twenty-five miles per hour. MODIFICATION OF CONDITIONS OF APPROVAL FOR SUBDIVISION 7840 January 18, 1994 Page Six 7. MODIFY Condition 17.G to specify intersection improvements and the installation of a three way stop at the intersection of Deodar Drive and First Avenue South. 8. MODIFY Condition 17.K to acknowledge the existence of the heritage oak tree that intrudes into the road section of Second Avenue South. The following are the actual modified conditions of approval: 2.A Guide for minimum yard standards shall be as follows: Front: 16 feet from property line; 4S feet back of sidewalk. Side: 4 feet; total 1 feet between builcf"irigs; side yards adjacent to a street, f >`fn shall not be less than 6 feet. ..........:..................................... dear:"4�5 € 6 feet. W HL 17.A1 Constructing road improvements along the frontage of Center Avenue, Deodar Drive, Second Avenue, and Elder Drive. Constructing curb, 4-foot 6-inch sidewalk (width measured from curb face), necessary longitudinal and traverse drainage and necessary pavement widening will satisfy this requirement for the Deodar Drive, Second Avenue, and Elder Drive fronta es. e face of curb shall be 20 4 feet from the ultimate centerline of Deodar Drive and :>;`:'`:":eet::' ::': €tat .: exlterme f Second Avenue, and 48 feet from the ultimate centerline of Elder Drive Construct curb, six ftixz -foot s -inch sidewalk (width measured from curb face), necessary longitudinal and traverse drainage,and necessary pavement wideningwill satisfy this requirement for the Center Avenue frontage. The face of the curb shall be 3feet from the centerline of the road. On all public roads with longitudinal slopes less than five percent, allublic pedestrian access ways shall be designed in accordance with Title 24 (Handicap access This shall include all driveway depressions as well as handicap ramps. 17.A.5 Installing, within a dedicated draina e..easement,.::any::portion of:thedrainage:system,which conveys run-off from Public streets. � � ��t �����€ I� � ��' ;p��}}} �� �#�� 1. i}iri::i:4iiiii}}}i".:}}}::tiiiiriiiiYtiv.?}?}i}y.Y:.: iiiiiiiiiiiii ...i..........................................::.f.v..:..:.x.......::.�::.�:..:: ....... ...... ............R.. ....................... .. .:r :::::.:::.::.:m.:::::.:rvldec.isan:;eu�^tv...e:: se::e .e.. t.::t .: h :: n:. ::1"t :: €1 :::1~ x.::p : :: la: h :.::::P.....1 .. ...... .. ........::........ :.................. .. ....:::::::.:::::.....:::::::::::::::::t..:.::::::::.::..._. .. ................................ ..:................+ ::1 ..........:: ...::.:::::..:..�..::. .:.r.:: .::::.::.a::.:...:.: r:.:::::.:::. . :.:.::::.:::::: :::::::::.::::::.:.::.::::::.t....:.a::.:::.::::::::::::::::::::::::: o„s, :..: Qi'b .;th .; atla €c :;a ;ferts:a .; fir..uIurs.;ulhz .> h .; tarm:.:driri.; asment.:. e : :::::::.P.....:::::::::::::::. .:.::::::::::: ::::::::::::::.. ::::::::.:::::::.;:.:::............:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::. 17.13.3 On Elder Drive as required for the planned future width of 56 feet. '''"" ' ��' "..' ..........:....... .. ........ ' ' .... :::< x c t :.::.<:.:................:.:...............................:..::.:::.:::::: ::.:::::P.::::::.:::::::::. ::::::.::::.::::..:::::..... :::::::::.:...................:::::...: ? if :€:gin :..esti...>' :..... .... ,,.... :::.... :::..,.. :::. �;:.t...:::..... .....:::.... ::' :':<::<': «' `: » : der::.;:::...:..n; excess r� hfi ofwa Alun iEh ,r e #fr nt ....wl#h.: e:; n :;bf.the final :..............:.:::::::::::.:..... ......::::::::::::.:. '.::::::.::::: .:::::::::::F.::::J:.:::::::::::::::::......11.:::::::::::::.::::::.:::::::::::::::.::F:. .....................................................................:........................ 17.0 Provide for adequate sight distance along Deodar Drive, Elder Drive, s # i.. and Second Avenue for a design speed of 30 2 miles per hour in accorlancei with"ialtrans standards. This require lowering. the crest..of the vertical curve on Deodar Drive. :T7.7-hi ..:(,... R:.. ♦ ...:::.:. :.}ii':. :•:•:Oiiiii.iiii:;iiiiii j;:ii:X!L.:i.ii:.:.iii:.{:.i:.i'.:ii.....iiiiY:4:'iiS};ii.is Yi( r .:a nr ': .: h.:cd: c .:. n:. a� :. s.: t:: xt::::es, 17.G Install safety related improvements on Second Avenue, Deodar Drive, and Elder Drive includin traffic si ns and channelization as a roved b the Public Works Department. 'h# ° iffi:................:...................Q..... ............... ........................................ ir. #.:. � u :::;.Scud >:t end.....h ::�::�::::::,:>::::>:; 17.K Along that portion of Second Avenue which lies between Deodar Drive and the Pacheco Creek bridge, restripe the existing pavement to provide for at least a 12-foot lane width from the northerly edge of pavement to the centerline of Second Avenue. Along the south side of Second avenue provide::fr at least an 18-foot lane width from face of curb to the Second Avenue ....;...... :i:i:};:}'ii':;? ;ii{ii:f'•:iiiiiiiiiiiiii:�i'iii?::•:�::i centerline sw dtat i t :. .;...;:::.;:;:. ;::::::::'.:::'.;:.;:i:::.::.i:.i:.i:::.i:.i:.i:.i;:.:;:.: .;:: : .;".;:.;:.: ;:::; aitxe If these lane widths cannot .......... ..r..... r............... ......... be provided by restriping t$is portion o Second Avenue; the.iap licant shall be required to widen the existing pavement along the uncurbed side of the road to accomodate those lane widths, subject to the review and approval of the Public Works Department. If the centerline stripe on Second Avenue east of Deodar Drive is to be shifted to the south, the applicant shall restripe Second Avenue west of Deodar Drive to align with the new striping. Adequate transitions for a 30 mileper hour design speed shall be provided, subject to the review and approval of the Public Works Department. Restriping along this portion of Second Avenue shall not eliminate parking on the south side of Second Avenue. ADDENDUM TO H.6 JANUARY 18, 1994 This is the time heretofore noticed by the Clerk of the Board of Supervisors for hearing on consideration of modifications to the project conditions of approval and project plans for Rezoning Application 3004-RZ, Final Development Plan 3009-93, and Subdivision 7840 developed by Braddock and Logan (applicant) on the former Pacheco School site in the Pacheco area, including the closure of Elder Drive and Deodar Drive in the Pacheco area. Dennis Barry, Community Development Department, introduced the item. Mitch Avalon, Public Works Department, presented the staff report and recommendations on the proposal which he advised were different from the ones in the Board packet. The public hearing was opened and the following persons presented testimony: Joe Raphel, P.O. Box 5300, Danville, representing Braddock and Logan; Wally Wiggs, 187 Freda Drive, Pacheco; Pello Walker, 1239 Raymond Drive, Pacheco; Donna J. Davidson, 1000 Temple Drive, Pacheco; Jim McQuay, 2000 Almond Avenue, Concord; Daphne Golliler, 98A Elder Drive, Pacheco; Edith Hills, 301 First Avenue South, Pacheco; Dan Hart, 137 Deodor Drive, Pacheco; John D. Harvey, 114 C Street, Pacheco; Jean Shoop, 118 Blackwood Drive, Pacheco; Joyce Jones, 45 Rutherford Lane, Pacheco; Peter Lujan, 104 Elder Drive, Pacheco; Dixie Sauvain, 1237 Temple Drive, Pacheco; Alberta Boeger, 711 Pacifica Avenue, Pacheco; Karl Boeger, 113 C Street, Pacheco; Michael Stratton, 110 Flame Drive, Pacheco; Mr. Raphel spoke in rebuttal. The public hearing was closed. Supervisor McPeak moved approval of the recommendation of staff dated January 13, 1994, with the modification that the barrier on Elder be moved as far South as can be done to orient as much of the traffic to Center without a compromise on safety and to look at the feasibility of some additional stop sign systems to promote safety. Supervisor Torlakson seconded the motion.