Loading...
Planning Commission Meeting 07-19-2016MINUTES OF A REGULAR MEETING OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS JULY 19, 2016 CALL MEETING TO ORDER A regular meeting of the Planning Commission of the City of Rolling Hills was called to order by Chairman Chelf at 6:36 p.m. on Tuesday, July 19, 2016 in the City Council Chamber, at City Hall, 2 Portuguese Bend Road, Rolling Hills, California. ROLL CALL Commissioners Present: Cardenas, Kirkpatrick, Gray and Chairman Chelf. Commissioners Absent: None. Others Present: Raymond R. Cruz, City Manager. Yolanta Schwartz, Planning Director. Natalie Karpeles, Assistant City Attorney. Wendy Starks, Associate Planner. Heidi Luce, City Clerk. Criss Gunderson, Architect. Tavisha Nicholson, Bolton Engineering. Charlie Raine, 4 Pinto Road. Carole Hoffman, 3 Hillside Lane. APPROVAL OF THE AGENDA Approved as presented. PUBLIC COMMENTS ON MINUTES AND ANY ITEM NOT ON THE AGENDA None. APPROVAL OF MINUTES June 21, 2016, Adjourned Regular Meeting of the Planning Commission Commissioner Cardenas moved that the Planning Commission approve the minutes of the adjourned regular meeting of the Planning Commission held on June 21, 2016 as presented. Commissioner Kirkpatrick seconded the motion, which carried without objection. "June 21, 2016, Regular Meeting of the Planning Commission Vice Chairman Gray moved that the Planning Commission approve the minutes of the regular meeting of the Planning Commission held on June 21, 2016 as presented. Commissioner Kirkpatrick seconded the motion, which carried without objection. RESOLUTIONS RESOLUTION NO. 2016-17. A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR A SWIMMING POOL, SPA AND POOL EQUIPMENT, AND A VARIANCE TO EXCEED 2.5' HIGH AVERAGE FOR ASSOCIATED WALLS IN ZONING CASE NO. 906 AT 27 CREST ROAD WEST, (LOT 174 -B -MS), ROLLING HILLS, CA (GOLDENBERG). IT HAS BEEN DETERMINED THAT THE PROJECT IS CATEGORICALLY EXEMPT FROM THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) GUIDELINES. Chairman Chelf introduced the item and asked for staffs comments. Associate Planner Starks briefly reviewed the applicant's request stating that last month the Planning Commission visited the proposed project in the field and following the public hearing, directed staff to prepare a Resolution granting approval of the applicant's request. Minutes Planning Commission Regular Meeting 07-19-16 ,• Chairman Chelf called for public comment. Hearing none, he asked for comments from the members of the Planning Commission. Vice Chairman Gray moved that the Planning Commission adopt Resolution No. 2016-17 granting approval of the applicant's request in Zoning Case No. 906 at 27 Crest Road West. Commissioner Cardenas seconded the motion, which carried without objection and with Commissioner Kirkpatrick abstaining due to an excused absence from last month's meeting when this project was discussed. PUBLIC HEARINGS ON ITEMS CONTINUED FROM PREVIOUS MEETING ZONING CASE NO. 895 -REVISED. Request for a Site Plan Review to construct a new 5,270 square foot single family residence, 848 square foot garage, 6,000 square foot basement, swimming pool, several not to exceed 5' high retaining walls, a new driveway and grading of 8,946 cubic yards of dirt which includes excavation from basement and pool; Variances are requested to encroach with the residence, retaining walls and basement light wells into setbacks, to locate the set aside area for a future stable and portion of the corral, the swimming pool and pool equipment in front yard and a portion of the corral within front setback, to exceed the maximum permitted total lot coverage and disturbed area of the lot, to construct retaining walls that do not average out to 2.5' in height, exceed the maximum permitted coverage with a driveway of the front setback and to export dirt off site, in Zoning Case No. 895, at 10 Bowie Road, (Lot 4-CRA), Rolling Hills, CA (Pang Jui Yiu). AND CONSIDERATION OF A RESOLUTION OF APPROVAL RESOLUTION NO. 2016-18. A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR CONSTRUCTION OF A NEW SINGLE FAMILY RESIDENCE, GARAGE AND A BASEMENT, SWIMMING POOL, VARIOUS OUTDOOR AMENITIES AND VARIOUS RETAINING WALLS, A NEW DRIVEWAY AND GRADING; REQUEST FOR VARIANCES TO ENCROACH WITH THE RESIDENCE, BASEMENT, LIGHT WELLS AND SEVERAL WALLS INTO SETBACKS, OF WHICH SOME DO NOT AVERAGE OUT TO 2.5' IN HEIGHT, TO LOCATE THE POOL, POOL EQUIPMNENT AND FUTURE STABLE AND CORRAL IN FRONT YARD AREA, TO EXCEED THE MAXIMUM PERMITTED TOTAL LOT COVERAGE AND DISTURBED AREA, TO EXCEED THE MAXIMUM PERMITTED COVERAGE OF FRONT SETBACK WITH THE DRIVEWAY AND TO EXPORT DIRT IN ZONING CASE NO. 895, AT 10 BOWIE ROAD, (LOT 4- CRA), ROLLING HILLS, CA (PANG JUI YIU). IT HAS BEEN DETERMINED THAT THE PROJECT IS CATEGORICALLY EXEMPT FROM THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) GUIDELINES. Chairman Chelf introduced the item and asked for staff's comments. Planning Director Schwartz reviewed the applicant's revised request stating that since the last meeting, the applicant has revised the request in response to comments and suggestions from the Planning Commission and as such, the project has been readvertised for public hearing. She further stated that based on direction from the Planning Commission, staff has prepared a Resolution granting approval of the applicant's revised request for the Planning Commission's consideration upon the conclusion of the public hearing. She stated that the changes from the original application include reducing the house size by almost 1,000 sq. ft.; lowering the house by 5-6 ft.; and variances requested to export 8,360 cu. yds. of soil and to locate the pool equipment in the front yard area of the lot. Ms. Schwartz stated that since the last meeting a letter was received from the residents at 19 Bowie Road expressing objection to the project and that letter is included with the staff report. In response to Vice Chairman Gray, Ms. Schwartz stated that the applicant will be required to submit a landscaping plan to staff as a part of the grading permit application. Vice Chairman Gray commented that doing so may address the concerns raised in the letter. Chairman Chelf called for public comment. Criss Gunderson addressed the Planning Commission to further explain the revisions that were made in response to the concerns raised by the neighbors and the Planning Commission. Commissioner Kirkpatrick commented that he reviewed the previous staff report and listened to the audio record of this previous meeting and is prepared to act on this matter. Minutes Planning Commission Regular Meeting 07-19-16 Following brief discussion, Vice Chairman Gray moved that the Planning Commission adopt Resolution No. 2016-18 granting approval of the applicant's request in Zoning Case No. 895 -REVISED at 10 Bowie Road. Commissioner Cardenas seconded the motion, which carried without objection. ZONING CASE NO. 902. Request for a Site Plan Review for the construction of a new 11,100 square foot residence, with 11,100 square foot basement, 1,540 square feet attached garages, 2,654 square feet covered porches, 864 square foot swimming pool and spa, trellises, a new driveway and an outdoor kitchen and grading for a total of 51,625 cubic yards of dirt, which includes over -excavation and re -compaction, of which 785 cubic yards will be exported; Conditional Use Permits to construct an 800 square foot guest house, and a 1,300 square foot stable with a 792 square foot loft; in Zoning Case No. 902, at 23 Crest Road East, (Lot 132A - MS), Rolling Hills, CA (Hynes). The project is exempt from the California Environmental Quality Act (CEQA) pursuant to Section 15303, Class 3 exemption Guidelines. Chairman Chelf introduced the item and asked for staffs comments. Planning Director Schwartz reviewed the applicant's request stating that there have been several public hearing, including a site visit in the Planning Commission's review of this project. She stated that the request was modified in response to recommendation and suggestions from the Planning Commission to address the concerns raised previously and there was an additional site visit earlier today. She stated that there are no variances requested with this application. She further stated that concern has been previously raised regarding drainage because this property is adjacent to the geotechnically hazardous area of the City. She further reviewed the concems raised regarding drainage stating that the City's Drainage Engineer was present at a previous meeting to further explain the drainage requirements and how the proposed drainage plan will work. She stated that included with the staff report is an additional report form Bolton Engineering which further explains the proposed drainage plan. She commented that as of earlier today, the applicant has submitted a drainage plan, which proposes additional cisterns to capture the water from the impervious surfaces on the lower pad as well. She stated that included with the staff report is letter from an attorney representing the residents below the proposed development; and a second letter received today from the applicant's attorney has been placed on the dais. Ms. Schwartz further reviewed the proposed grading stating that the bedrock ranges from 3 ft. to 6 ft. below the natural grade. She stated that based on previous discussion if the project is approved, the Planning Commission may suggest as a condition of approval that the plans be submitted to Los Angeles County for plan check rather than the City's other consulting building and safety officials. Chairman Chelf called for public comment. Tavisha Nicholson addressed the Planning Commission to further review the modifications to the project including the size of the house, the reduced grading and the revised drainage plan which includes additional cisterns on the lower pad. She further reviewed and explained the hydrology stating that the cisterns are designed for the 25 year storm. Discussion ensued conceming the drainage plan and the proposed cisterns and the location of the septic system. In response to Chairman Chelf, Ms. Nicholson explained how the cisterns work. Charlie Raine, 4 Pinto Road addressed the Planning Commission to express concern regarding the drainage and its impact on the properties below in the landslide area. He expressed further concem regarding the size of the house and the amount of hardscape. He further suggested that there be an independent review of the hydrology study. Carole Hoffman, 3 Hillside Lane addressed the Planning Commission to express concern regarding the size of the proposed house and the impact the project, including the septic system will have on the properties below. Discussion ensued concerning the drainage plan and the revisions that were made to the applicant's request. The Planning Commission expressed appreciation to the applicant for their efforts in revising the project to address the concerns raised. Following discussion, Vice Chairman Gray moved that the Planning Commission direct staff to prepare a Resolution granting approval of the applicant's request in Zoning Case No. 902 at 23 Crest Road East with the standard findings of fact and conditions of approval plus a condition that the County of Los Angeles be engaged to provide building and safety related services for this project. Commissioner Kirkpatrick seconded the motion, which carried without objection. Minutes Planning Commission Regular Meeting 07-19-16 Minutes Planning Commission Regular Meeting 07-19-16 ZONING CASE NO. 904 -REVISED. Request for a Site Plan Review, a Conditional Use Permit and a Variance for grading and construction of an 1,140 square foot stable with 1,032 square feet of covered porches, 1,950 square foot corral and 5,500 square foot riding ring, to encroach with the riding ring into the front and side setbacks and to exceed the maximum permitted disturbance of the lot at 34 Saddleback Road (Lot 102-RH) Rolling Hills, CA, (Delgado). The project has been determined to be categorically exempt from the California Environmental Quality Act, (CEQA) pursuant to Section 15303 of the CEQA Guidelines. Associate Planner Starks reviewed the applicant's request and reported that at the field trip earlier in the day, the Planning Commission directed staff to prepare a Resolution granting approval of the applicant's request in Zoning Case No. 904 -REVISED at 34 Saddleback Road with the standard findings of fact and conditions of approval for the Planning Commission's consideration at its next meeting. Chairman Chelf called for public comments. Carole Hoffman, 3 Hillside Lane addressed the Planning Commission in support of the project. NEW PUBLIC HEARINGS None. SCHEDULE OF FIELD TRIPS The Planning Commission scheduled a field trip to the following properties to be conducted on Tuesday, August 16, 2016 beginning at 7:30 a.m. 7 Southfield (deck) 10 Pine Tree Lane (Lot Lines Adjustment/grading) 10 Middleridge Lane South (reconfiguration of driveways) ITEMS FROM THE PLANNING COMMISSION None. ITEMS FROM STAFF None. ADJOURNMENT Hearing no further business before the Commission, Chairman Chelf adjourned the meeting at 7:49 p.m. to an adjoumed regular meeting of the Planning Commission scheduled to be held on Tuesday, August 16, 2016 beginning at 7:30 a.m. for the purpose of conducting field trips to 7 Southfield (deck); 10 Pine Tree Lane (Lot Lines Adjustment/grading) and 10 Middleridge Lane South (reconfiguration of driveways). The next regular meeting of the Planning Commission is scheduled to be held on Tuesday, August 16, 2016 beginning at 6:30 p.m. in the City Council Chamber, Rolling Hills City Hall, 2 Portuguese Bend Road, Rolling Hills, California. Respectfully submitted, Heidi Luce City Clerk CITY OF ROLLING HILLS PROOF OF SERVICE BY MAIL AND POSTING STATE OF CALIFORNIA ss COUNTY OF LOS ANGELES 1 am a citizen of the United States. I am over the age of eighteen years and not a party to the within proceeding; my business address is 2 Portuguese Bend Road, Rolling Hills, California. On the 15ih day of July, 2016, I serve the within Planning Commission Meeting Agenda Regular Meeting - 07/19/2016 a copy of which is annexed hereto and made a part hereof, on the person, or persons, named below by placing a true copy thereof enclosed in a sealed envelope with postage thereon fully prepaid, in the United States mail at Rolling Hills, California addressed as follows: Emailed MAILED DROPBOX DELIVERED 1 Assistant RH ListSery Interested City Attorney Parties Also posted at City Hall and at www.Rolling-Hills.org City Manager Planning Commission I certify (or declare) under penalty of perjury, that the foregoing is true and correct. Executed on the 15" day of July, 2016 at Rolling Hills, California. Ewa Nikodem Administrative Assistant ger,a# Ram gie INCORPORATED JANUARY 24, 1957 NO. 2 PORTUGUESE BEND ROAD ROLLING HILLS, CA 90274 (310) 377-1521 FAX (310) 377-7288 REGULAR MEETING OF THE PLANNING COMMISSION CITY OF ROLLING HILLS 6:30 PM TUESDAY, JULY 19, 2016 ROLLING HILLS CITY HALL 2 PORTUGUESE BEND ROAD, ROLLING HILLS, CA 90274 1. CALL MEETING TO ORDER 2. ROLL CALL 3. APPROVAL OF THE AGENDA 4. PUBLIC COMMENTS ON MINUTES AND ANY ITEM NOT ON THE AGENDA 5. APPROVAL OF MINUTES A. June 21, 2016, Adjourned Regular Meeting of the Planning Commission B. June 21, 2016, Regular Meeting of the Planning Commission 6. RESOLUTIONS A. RESOLUTION NO. 2016-17. A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR A SWIMMING POOL, SPA AND POOL EQUIPMENT, AND A VARIANCE TO EXCEED 2.5' HIGH AVERAGE FOR ASSOCIATED WALLS IN ZONING CASE NO. 906 AT 27 CREST ROAD WEST, (LOT 174 -B -MS), ROLLING HILLS, CA (GOLDENBERG). IT HAS BEEN DETERMINED THAT THE PROJECT IS CATEGORICALLY EXEMPT FROM THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) GUIDELINES. -1- 7. PUBLIC HEARINGS ON ITEMS CONTINUED FROM A PREVIOUS MEETING A. ZONING CASE NO. 895 -REVISED. Request for a Site Plan Review to construct a new 5,270 square foot single family residence, 848 square foot garage, 6,000 square foot basement, swimming pool, several not to exceed 5' high retaining walls, a new driveway and grading of 8,946 cubic yards of dirt which includes excavation from basement and pool; Variances are requested to encroach with the residence, retaining walls and basement light wells into setbacks, to locate the set aside area for a future stable and portion of the corral, the swimming pool and pool equipment in front yard and a portion of the corral within front setback, to exceed the maximum permitted total lot coverage and disturbed area of the lot, to construct retaining walls that do not average out to 2.5' in height, exceed the maximum permitted coverage with a driveway of the front setback and to export dirt off site, in Zoning Case No. 895, at 10 Bowie Road, (Lot 4-CRA), Rolling Hills, CA (Pang Jui Yiu). AND CONSIDERATION OF A RESOLUTION OF APPROVAL RESOLUTION NO. 2016-18. A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR CONSTRUCTION OF A NEW SINGLE FAMILY RESIDENCE, GARAGE AND A BASEMENT, SWIMMING POOL, VARIOUS OUTDOOR AMENITIES AND VARIOUS RETAINING WALLS, A NEW DRIVEWAY AND GRADING; REQUEST FOR VARIANCES TO ENCROACH WITH THE RESIDENCE, BASEMENT, LIGHT WELLS AND SEVERAL WALLS INTO SETBACKS, OF WHICH SOME DO NOT AVERAGE OUT TO 2.5' IN HEIGHT, TO LOCATE THE POOL, POOL EQUIPMNENT AND FUTURE STABLE AND CORRAL IN FRONT YARD AREA, TO EXCEED THE MAXIMUM PERMI I l tD TOTAL LOT COVERAGE AND DISTURBED AREA, TO EXCEED THE MAXIMUM PERMITTED COVERAGE OF FRONT SETBACK WITH THE DRIVEWAY AND TO EXPORT DIRT IN ZONING CASE NO. 895, AT 10 BOWIE ROAD, (LOT 4-CRA), ROLLING HILLS, CA (PANG JUI YIU). IT HAS BEEN DETERMINED THAT THE PROJECT IS CATEGORICALLY EXEMPT FROM THE CALIFORNIA ENVIRONMENTAL QUALITY ACT (CEQA) GUIDELINES. B. ZONING CASE NO. 902. Request for a Site Plan Review for the construction of a new 11,100 square foot residence, with 11,100 square foot basement, 1,540 square feet attached garages, 2,654 square feet covered porches, 864 square foot swimming pool and spa, trellises, a new driveway and an outdoor kitchen and grading for a total of 51,625 cubic yards of dirt, which includes over -excavation and re -compaction, of which 785 cubic yards will be exported; Conditional Use Permits to construct an 800 square foot guest house, and a 1,300 square foot stable with a 792 square foot loft; in Zoning Case No. 902, at 23 Crest Road East, (Lot 132A -MS), Rolling Hills, CA (Hynes). The project is exempt from the California Environmental Quality Act (CEQA) pursuant to Section 15303, Class 3 exemption Guidelines. -2- C. ZONING CASE NO. 904 -REVISED. Request for a Site Plan Review, a Conditional Use Permit and a Variance for grading and construction of an 1,140 square foot stable with 1,032 square feet of covered porches, 1,950 square foot corral and 5,500 square foot riding ring, to encroach with the riding ring into the front and side setbacks and to exceed the maximum permitted disturbance of the lot at 34 Saddleback Road (Lot 102-RH) Rolling Hills, CA, (Delgado). The project has been determined to be categorically exempt from the California Environmental Quality Act, (CEQA) pursuant to Section 15303 of the CEQA Guidelines. 8. SCHEDULE OF FIELD TRIPS (August 16, 2016) 7 Southfield (deck) 10 Pine Tree Lane (Lot Lines Adjustment/grading) 10 Middleridge Ln. S. (Reconfiguration of drwys) 9. ITEMS FROM THE PLANNING COMMISSION 10. ADJOURNMENT In compliance with the Americans with Disabilities Act (ADA), if you need special assistance to participate in this meeting due to your disability, please contact the City Clerk at (310) 377-1521 at least 48 hours prior to the meeting to enable the City to make reasonable arrangements to ensure accessibility and accommodation for your review of this agenda and attendance at this meeting. Documents pertaining to an agenda item received after the posting of the agenda are available for review in the City Clerk's office or at the meeting at which the item will be considered. -3- Agenda Item No: 5A Mtg. Date: 07-19-16 MINUTES OF AN ADJOURNED REGULAR MEETING OF THE PLANNING COMMISSION JUNE 21, 2016 FIELD TRIP PRESENT: Chairman Chelf, Commissioners Cardenas, Gray, and Smith Commissioner Kirkpatrick absent and excused Raymond Cruz, City Manager Yolanta Schwartz, Planning Director Wendy Starks, Associate Planner A. ZONING CASE NO. 906, Request for a Site Plan Review for grading and a 1,375 square foot pool/spa, pool equipment, and a Variance to exceed 2.5' high average for associated retaining walls at 27 Crest Road West (Lot 174 -B -MS) Rolling Hills, CA, (Goldenberg). Also present at this field trip were: Jim Aichele, resident 14 Crest Road West Leah Mirsch, resident 4 Cinchring Road Thomas Dobos, Architect Chairman Chelf called the meeting to order at 7:36 a.m. at 27 Crest Road West. Planning Director Schwartz reviewed the applicant's request for approval of a 1,375 square foot pool/spa with associated walls, fire pit, wall for master bathroom courtyard, and pool equipment enclosure. Following brief discussion and there being no objections, the Commissioners requested that staff draft a Resolution of Approval. Commissioner Smith joined the group and was toured through the project. In response to Commissioner Smith regarding the location of future stable, corral and access to it, Mr. Dobos pointed out the location and access, which is to the east of the tennis court. Commissioner Smith voiced no objections to the previous motion to approve. B. ZONING CASE NO. 904, Request for a Site Plan Review and a Conditional Use Permit to construct a 976 square foot stable with 767 square feet of covered porches, and a maximum 5' high retaining wall, and grading at 34 Saddleback Road (Lot 102-RH) Rolling Hills, CA, (Delgado). Also present at this field trip were: Ms. Eddy Delgado, Property Owner Richard Gastelun, representative for Russ Barto, Architect V Mark Walters, construction project manager for property owner Dr. Ralph Black, resident 36 Saddleback Road Leah Mirsch, resident 4 Cinchring Road Jim Aichele, resident 14 Crest Road West Associate Planner Wendy Starks reviewed the applicant's proposed project for a 976 square foot stable with 767 square feet of porches adjacent to the existing riding ring. Ms. Starks explained that the Planning Department visited the site last week to preview the staking and realized that as it is staked there is not 35' distance between the guesthouse and the proposed stable. The applicant then subsequently requested a Variance from the 35' use separation requirement that was submitted to the Planning Department after the agenda and staff reports were completed. Discussion ensued about the location of the stable and the subsequent request for a variance. Commissioners provided suggestions for various alternatives that would remove the need for a Variance that included: moving the stable closer to the equestrian trail which would require more grading and a retaining wall at the trail, reducing the portion of the porch that encroaches, shifting the stable closer to the riding ring, or allowing the variance and the stable as is currently proposed. Commissioners voiced concerns about the variance as to recollection of staff, one of this nature has not been requested before and alternatives are available to negate the need for a Variance. Following further discussion Commissioners suggested that the applicant consider the alternatives for discussion when the Planning Commission reconvenes in the evening meeting. Dr. Black inquired about the 2 utility poles between 34 Saddleback and the neighboring property and Ms. Delgado stated that one of the poles will be removed with the cost shared between her and her neighbor. There being no further discussion, the public hearing was continued to the evening meeting of the Planning Commission beginning at 6:30 PM. Respectfully Submitted, Yolanta Schwartz Date Planning Director Approved: Brad Chelf, Chairman Date ' DRAFT Agenda Item No. 5-B Meeting Date: 07-19-16 MINUTES OF A REGULAR MEETING OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS JUNE 21, 2016 CALL MEETING TO ORDER A regular meeting of the Planning Commission of the City of Rolling Hills was called to order by Chairman Chelf at 6:33 p.m. on Tuesday, June 21, 2016 in the City Council Chamber, at City Hall, 2 Portuguese Bend Road, Rolling Hills, California. ROLL CALL Commissioners Present: Cardenas, Gray, Smith and Chairman Chelf. Commissioners Absent: Commissioner Kirkpatrick (excused). Others Present: Yolanta Schwartz, Planning Director. Natalie Karpeles, Assistant City Attorney. Wendy Starks, Associate Planner. Heidi Luce, City Clerk. Lauren Shamg, 5 Pine Tree Lane. Criss Gunderson, Architect. Ross Smith, 4 Bowie Road. V'Etta Virtue, 4 Maverick Lane. Tavisha Nicholson, Bolton Engineering. Charlie Raine, 4 Pinto Road. Carmen Schaye, 58 Portuguese Bend Road. Tom, Hynes, 23 Crest Road East (property owner). Eddy Delgado, 38 Saddleback Road. Carole Hoffman, 3 Hillside Lane. APPROVAL OF THE AGENDA Approved as presented. PUBLIC COMMENTS ON MINUTES AND ANY ITEM NOT ON THE AGENDA None. Minutes Planning Commission Regular Meeting 06-21-16 ' DRAFT APPROVAL OF MINUTES May 17, 2016, Adjourned Regular Meeting of the Planning Commission Commissioner Smith moved that the Planning Commission approve the minutes of the adjourned regular meeting of the Planning Commission held on May 17, 2016 as presented. Commissioner Cardenas seconded the motion, which carried without objection. May 17, 2016, Regular Meeting of the Planning Commission Commissioner Smith moved that the Planning Commission approve the minutes of the regular meeting of the Planning Commission held on May 17, 2016 as presented. Commissioner Cardenas seconded the motion, which carried without objection. REORGANIZATION CONSIDERATION OF REORGANIZATION OF THE PLANNING COMMISSION The Planning Commission continued this matter to a future meeting. CONSIDERATION OF REORGANIZATION OF THE COMMITTEE ON TREES AND VIEWS The Planning Commission continued this matter to a future meeting. REQUEST FOR TIME EXTENSION REQUEST FOR TIME EXTENSION TO COMMENCE WORK IN ZONING CASE NO. 863, 38 PORTUGUESE BEND ROAD. Commissioner Smith recused herself from consideration of this case due to the proximity of her property to the subject property and left the dais. Chairman Chelf introduced this item and asked for staff's comments. Planning Director Schwartz stated the applicant in Zoning Case No. 863 at 38 Portuguese Bend Road submitted a request for a two-year time extension to commence construction on the project. Following brief discussion, Vice Chairman Gray moved that the Planning Commission adopt Resolution No. 2016-16 granting two-year time extension to commence construction in Zoning Case No. 863 at 38 Portuguese Bend Road. Commissioner Cardenas seconded the motion, which carried without objection. Commissioner Smith returned to the dais. RESOLUTIONS RESOLUTION NO. 2016-15. A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL FOR A SITE PLAN REVIEW, FOR GRADING AND CONSTRUCTION OF A NEW RESIDENCE WITH A BASEMENT, DETACHED GARAGES, COVERED PORCHES, STABLE, SWIMMING POOL WITH A SPA, RETAINING WALLS, NEW DRIVEWAY; A CONDITIONAL USE PERMIT TO Minutes Planning Commission Regular Meeting 06-21-16 DRAFT CONSTRUCT A GUEST HOUSE, DETACHED GARAGES, AND STABLE WITH LOFT; AND VARIANCES TO EXCEED MAXIMUM PERMITTED AVERAGE HEIGHT OF RETAINING WALLS AND TO EXCEED THE MAXIMUM PERMITTED LOT DISTURBANCE IN ZONING CASE NO. 901 AT 5 PINE TREE LANE, (LOT 94-RH), (SHARNG). Chairman Chelf introduced this item and asked for staff's comments. Planning Director Schwartz briefly reviewed the applicant's request in Zoning Case No. 901 at 5 Pine Tree Lane stating that at its last meeting, the Planning Commission directed staff to prepare a Resolution approving this project and that resolution is presented for consideration with the standard findings of fact and conditions of approval as well as certain conditions specific to this project. She noted that the proposed driveway was reviewed by the Traffic Commission and recommended for approval but the applicant has since revised the driveway location to address concerns raised. She reviewed the new driveway configuration stating that it will be moved 20 ft. to the North so that the Pine trees can be retained. She stated that this change will be reviewed by the Traffic Commission at its July meeting and the resolution contains a condition that the driveway is subject to Traffic Commission review and approval. She stated that today, an e-mail was received from the new property owner at 3 Pine Tree Lane requesting that that the Planning Commission defer its decision on this matter to give him an opportunity to review the plans. Discussion ensued concerning this request and it was noted that there are no specific objection presented in the correspondence. Chairman Chelf called for public comments. Lauren Sharng, 5 Pine Tree Lane addressed the Planning Commission regarding the request to defer stating that she met the new owners at the RHCA office recently and offered to show them the plans and review the project. She stated that the new owners were aware of the project when they purchased the property and requested that the decision not be deferred. Tavisha Nicholson, Bolton Engineering addressed the Planning Commission to further explain the revised driveway configuration. Following brief discussion, Vice Chairman Gray moved that the Planning Commission adopt Resolution No. 2016-15 granting approval of the applicant's request in Zoning Case No. 901 at 5 Pine Tree Lane. Commissioner Smith seconded the motion, which carried without objection. PUBLIC HEARINGS ON ITEMS CONTINUED FROM PREVIOUS MEETING ZONING CASE NO. 895 -REVISED. Request for a Site Plan Review to construct a new 5,270 square foot single family residence, 848 square foot garage, 6,000 square foot basement, swimming pool, several not to exceed 5' high retaining walls, a new driveway and grading of 8,500 cubic yards of dirt which includes excavation from basement and pool; Variances are requested to encroach with the residence into the rear setback, to locate the set aside area for a future stable and portion ,of the corral in front yard and a portion of the corral within front setback, to exceed the maximum permitted total lot coverage and disturbed area of the lot, to encroach with retaining walls and basement light wells into setbacks, to construct retaining walls that do not average out to 2.5', in height, to exceed the maximum permitted coverage with a Minutes Planning Commission Regular Meeting 06-21-16 DRAFT driveway of the front setback and to export the dirt off site, in Zoning Case No. 895, at 10 Bowie Road, (Lot 4-CRA), Rolling Hills, CA (Pang Jui Yiu). The project has been determined to be categorically exempt (Class 3) pursuant to the California Environmental Quality Act (CEQA) Guidelines, Section 15303. Chairman Chelf introduced this item and asked for staff's comments. Planning Director Schwartz reviewed the applicant's revised request stating that the revisions were made based on the concerns raised by the Planning Commission and neighbors when the project was previously considered regarding the size of the house, the grading, and the amount of fill, the driveway and the walls. She reviewed the revisions stating that the size of the house was reduced from 6,269 sq. ft. to 5,270 sq. ft. resulting in less encroachment into the yard setback; the number of lightwells was reduced; the pad was lowered by 5-6 ft.; the size of the building pad was reduced and the retaining walls were revised and reduced. She stated that today, the applicant's representative submitted further revisions to the pool and the location of the pool equipment based on concerns raised by a neighbor. She stated that by moving the pool, it is now in front of the leading edge of the house, which requires a variance and will have to be noticed and advertised as such. She noted that the grading quantities also changed. She further provided an overview of the applicant's request including the grading, disturbance and variances requested. She stated that the driveway approach was reviewed by the Traffic Commission and recommended for approval. In response to Commissioner Cardenas regarding the size of the building pad getting smaller, Planning Director Schwartz stated that it was a result of the pad being lowered and there being less fill. Chairman Chelf called for public comment. Criss Gunderson, Architect addressed the Planning Commission to further explain the changes that were made to the project stating that in addition to addressing the concerns raised by the Planning Commission, he met with several neighbors to hear their concerns and the revisions were based on those concerns as well. With regard to moving the pool and the pool equipment, he stated that change was in response to concern raised by a neighbor regarding noise the pool equipment and the pool itself. Chairman Chelf expressed his appreciation to Mr. Gunderson for his responsiveness to the concerns raised. Ross Smith, 4 Bowie Road addressed the Planning Commission stating that he and other neighbors met with Mr. Gunderson to express their concerns regarding the project and the revised plans were reviewed by neighbors. He stated that overall they are happy with what has been achieved so far. He commented that Mr. Gunderson also agreed to landscape the area between his property and the subject property. V'Etta Virtue, 4 Maverick Lane addressed the Planning Commission to express concern regarding the soil stability in the area. Chairman Chelf asked the Planning Commissioners if they feel a second field trip is necessary. Vice Chairman Gray commented that his concerns have been addressed and he does not feel it is necessary to visit the site again. Commissioner Cardenas concurred. Commission Smith commented that she would like to see the project. Minutes Planning Commission Regular Meeting 06-21-16 DRAFT In response to Chairman Chelf regarding the concern raised by Mrs. Virtue, Mr. Gunderson stated that the soils and geology reports have been done and there were issues of concern. Discussion ensued concerning the grading and the fill. Mr. Gunderson commented that there is no fill on the northerly slopes. Following discussion, Vice Chairman Gray moved that the Planning Commission direct staff to prepare a Resolution granting approval of the applicant's request in Zoning Case No. 895 -REVISED at 10 Bowie Road with the standard findings of fact and conditions of approval. Commissioner Cardenas seconded the motion. Planning Director Schwartz commented that based on the latest revisions made, the request for variance will be re-noticed/advertised and it will come back before the Planning Commission as a public hearing with a resolution of approval for consideration. Following brief discussion, the motion carried with Commissioner Smith opposed. ZONING CASE NO. 902. Request for a Site Plan Review for the construction of a new 11,100 square foot residence, with 11,100 square foot basement, 1,540 square feet attached garages, 2,654 square feet covered porches, 864 square foot swimming pool and spa, trellises, driveway and an outdoor kitchen and grading for a total of 63,250 cubic yards of dirt, which includes over - excavation and re -compaction; Conditional Use Permits to construct an 800 square foot guest house, and a 1,300 square foot stable with a 792 square foot loft; in Zoning Case No. 902, at 23 Crest Road East, (Lot 132A -MS), Rolling Hills, CA (Hynes). The project is exempt from the California Environmental Quality Act (CEQA) pursuant to Section 15303, Class 3 exemption Guidelines. Chairman Chelf introduced the item and asked for staff's comments. Planning Director Schwartz reviewed the applicant's request stating that the Planning Commission visited the site and held a public hearing in May. She stated at the last meeting, the Planning Commission expressed concern regarding the size of the house, the configuration of the lower pad, and the tennis court and the amount of fill required for the tennis court and neighboring resident expressed concern regarding the grading and drainage and the impact the development will have on the properties below in the Flying Triangle landslide area. She further stated that in response to the concerns regarding drainage, the County Engineer was present at the last meeting to address the drainage questions and the applicant has prepared a hydrology study that was deemed adequate for this project by Willdan Engineering. She stated that in response to the concerns raised previously, the applicant has revised the project in several aspects. She reviewed the revisions, which include reducing the size of the house and basement to 11,100 sq. ft.; relocating the driveway 20 ft. to the east and 4 ft. south to lessen the impact of the driveway; modifying the garages; reducing the size of the pool; removing some of the parking pads and outdoor amenities and eliminating the tennis court. She stated that a 1,300 sq. ft. stable and 800 sq. ft. guesthouse are now proposed on the lower pad instead of the tennis court. She further reviewed the grading for the lower pad noting that the amount of cut and fill has been revised. She stated that as recommended by the Planning Commission, the applicant is proposing cisterns to handle the water rather than the infiltration unit previously proposed. She further reviewed the proposed drainage. She stated that the revised driveway apron will be presented to the Traffic Commission for consideration at its July meeting. She further reviewed the grading, which is proposed at 63,250 cu. yds. with 19,000 cu. yds. of overexcavation and 19,500 cu. yds. of recompaction. She stated that no variances are requested with this application since the tennis court was eliminated and the driveway was reconfigured. She further reviewed the coverage and grading percentages which are all below the Code requirements. S • . r Minutes Planning Commission Regular Meeting 06-21-16 0 DRAFT Brief discussion ensued concerning the proposed cisterns. Chairman Chelf called for public comment. Tavisha Nicholson, Bolton Engineering addressed the Planning Commission to further explain how the cisterns were designed to work stating that all of the water from the upper area will be going the cisterns and discharged into the outlet structure. Further discussion ensued concerning the proposed drainage plan. Ms. Nicholson further explained the other revisions that were made to the project stating that all of the variances were eliminated. Charlie Raine, 4 Pinto Road addressed the Planning Commission to express concern that the drainage and grading associated with this project will affect the stability of the properties below. He reviewed a map/aerial image of the area showing the canyons and neighboring properties, pointing out the canyons that flank property. He further commented that he believes the hydrology report should be further reviewed. Carmen Schaye, 58 Portuguese Bend Road addressed the Planning Commission to express concern regarding the stability of property and the size of the house. She expressed further concern regarding the drainage from the property and its affect on the properties below. Tom Hynes, Property Owner addressed the Planning Commission stating that this property has been in family many years and they should be able to develop it as long as the applicable laws and engineer's recommendations are followed. Commissioner Cardenas commented that he believes a site visit should be scheduled. Commissioner Smith expressed concern regarding the large amount of cut and fill and the stability of the area. Vice Chairman Gray commented that he is pleased with the addition of the cisterns for water retention and also expressed concern regarding the amount of fill on the lower pad and suggested that maybe the guesthouse could be lowered to reduce the fill. Chairman Chelf expressed appreciation to the applicant for the efforts that have been made in attempt to address the concerns raised. He suggested the applicant provide an explanation of the water retention system and how it affects the outflow. Commissioner Cardenas suggested that the applicant provide more information regarding the affect the cisterns have on the amount of water coming off the developed property as compared to the undeveloped site. In response to Commissioner Smith, Mr. Hynes explained the history behind his family's purchase of the property and stated that it was simply due to personal family reasons that the property was not developed. Following staff's presentation, public testimony and discussion, the members of the Planning Commission determined that a site visit should be scheduled to provide the members of the Planning Commission with further understanding of the applicant's revised request in Zoning Case No. 902 at 23 Crest Road East. The public hearing was continued. M inutes Planning Commission Regular Meeting 06-21-16 DRAFT ZONING CASE NO. 904, Request for a Site Plan Review and a Conditional Use Permit to construct a 976 square foot stable with 767 square feet of covered porches, and a maximum 5' high retaining wall, and grading at 34 Saddleback Road (Lot 102-RH) Rolling Hills, CA, (Delgado). The project has been determined to be categorically exempt from the California Environmental Quality Act, (CEQA) pursuant to Section 15303 of the CEQA Guidelines. Chairman Chelf introduced the item and asked for staff's comments. Associate Planner Starks reviewed the applicant's request and stated that the Planning Commission visited the site earlier in the day. She stated that grading is proposed at 250 cu. yds. of cut and 250 cu. yds. of fill. She stated that as staff was reviewing the staking, it was realized that there wasn't the required 35 ft. distance between the guesthouse and the stable so the applicant will need to request a Variance if they wish to leave it as currently proposed and the project will have to be renoticed/advertised. She reviewed the coverage percentages stating that the structural lot coverage is 9.7%, total lot coverage is 22.9% and disturbance is 63%. She further stated that since the field trip staff received a letter from a neighbor regarding a utility pole noting that the applicant will be required to underground the utilities to the structure, but there will be no requirement that the pole be removed. In response to Commissioner Cardenas, Planning Director Schwartz stated that the Zoning Ordinance requires undergrounding to the structure under consideration, but does not require that the pole be removed because other property owners may be receiving service form the pole. Chairman Chelf called for public comment. Eddy Delgado addressed the Planning Commission stating that she is working with her contractors to determine the best way to address the concerns raised during the field trip but it is proving to be a challenge because either the trail or the riding arena will be impacted. Ms. Delgado expressed frustration over the challenges she's faced attempting to construct this stable. Discussion ensued concerning options for addressing the concerns raised. It was suggested that applicant consider locating the stable where the arena is proposed, the corral where stable is proposed and requesting a variance to locate the riding area in the front yard area. Carole Hoffman, 3 Hillside Lane addressed the Planning Commission suggesting that the barn be re- located to an area with more open space around it to provide the best utilization for equestrian uses. Following staff's presentation, public testimony and discussion, the members of the Planning Commission asked the applicant to submit revised plans to address the Planning Commission's concerns regarding the project. The public hearing was continued. ZONING CASE NO. 906, Request for a Site Plan Review for grading and a 1,375 square foot pool/spa, pool equipment, and a Variance to exceed 2.5' high average for associated retaining walls at 27 Crest Road West (Lot 174 -B -MS) Rolling Hills, CA, (Goldenberg). The project has been determined to be categorically exempt from the California Environmental Quality Act, (CEQA) pursuant to Section 15303 of the CEQA Guidelines. Chairman Chelf introduced the item and asked for staff's comments. Planning Director Schwartz reported that at the field trip earlier in the day, the Planning Commission directed staff to prepare a Minutes Planning Commission Regular Meeting 06-21-16 DRAFT Resolution granting approval of the applicant's request in Zoning Case No. 906 at 27 Crest Road West with the standard findings of fact and conditions of approval which will be presented to the Planning Commission for consideration at its July meeting. Chairman Chelf called for public comment. Hearing none, he closed the public hearing. NEW PUBLIC HEARINGS None. SCHEDULE OF FIELD TRIPS The Planning Commission scheduled a field trip to the following properties to be conducted on Tuesday, July 19, 2016 beginning at 7:30 a.m. 7 Ringbit Rd. E (tentative) 23 Crest Rd. East 10 Pine Tree Lane (Lot Line Adjustment) 2950 Palos Verdes Drive North - slope repair ITEMS FROM THE PLANNING COMMISSION Commissioncr Smith expressed her appreciation to the other Planning Commissioners and stated that she has enjoyed working with them and serving on the Planning Commission. Chairman Chelf thanked Commissioner Smith for her years of service stating at he appreciates the balance she brought to the Planning Commission. ITEMS FROM STAFF Topics and dates for joint meeting between the Planning Commission and City Council. Planning Director Schwartz reviewed potential dates and topics for the joint meeting between the Planning Commission and City Council. Recognizing that the August dates were not convenient for everyone, staff was asked to look for dates in September for the meeting. ADJOURNMENT Hearing no further business before the Commission, Chairman Chelf adjourned the meeting at 8:31 p.m. to an adjourned regular meeting of the Planning Commission scheduled to be held on Tuesday, July 19, 2016 beginning at 7:30 a.m. for the purpose of conducting field trips to 7 Ringbit Road East; 23 Crest Road East; 10 Pine Tree Lane and 2950 Palos Verdes Drive North. The next regular meeting of the Planning Commission is scheduled to be held on Tuesday, July 19, 2016 beginning at 6:30 p.m. in the City Council Chamber, Rolling Hills City Hall, 2 Portuguese Bend Road, Rolling Hills, California. Minutes Planning Commission Regular Meeting 06-21-16 ' DRAFT Respectfully submitted, Heidi Luce City Clerk Approved, Brad Chelf Chairman Minutes Planning Commission Regular Meeting 06-21-16 ger9 Rage4 gam¢ INCORPORATED JANUARY 24, 1957 TO: NO. 2 PORTUGUESE BEND ROAD ROLLING HILLS, CA 90274 (310) 377-1521 FAX (310) 377-7288 Agenda Item No.: 6-A Mtg. Date: 7-19-16 HONORABLE CHAIRMAN AND MEMBERS OF THE PLANNING COMMISSION FROM: YOLANTA SCHWARTZ, PLANNING DIRECTOR WENDY STARKS, AICP, ASSOCIATE PLANNER APPLICATION NO. SITE LOCATION: ZONING AND SIZE: APPLICANT: REPRESENTATIVE: DATE PUBLISHED: ZONING CASE NO. 906 27 CREST ROAD WEST (174 -B -MS) RA -S-2, 4.5 ACRES (GROSS) MR. & MRS. GOLDENBERG THOMAS G. DOBOS, LANDSCAPE ARCHITECT MAY 5, 2016 REQUEST AND RECOMMENDATION 1. The applicants Mr. and Mrs. Goldenberg request a Site Plan Review and Variance for a 1,375 square foot pool/spa with infinity edge, with several terraced retaining walls ranging from 1' to 4'8" high for pool area, associated grading totaling 388 cubic yards, 64 square feet of pool equipment enclosed with 5' high maximum wall, and a 5' high wall to enclose a master bath courtyard for privacy. A new 68 square foot barbecue structure and a 40 square foot fire pit are also proposed. The privacy wall and pool equipment enclosure wall will not average out to 2.5' in height, thus the variance request. 2. The Planning Commission held public hearings on May 17, 2016, in the field on June 21, 2016 and later that same day in Council Chambers on June 21, 2016 and following the review and discussion of the project, directed staff to prepare a Resolution of approval. 3. It is recommended that the Planning Commission review and consider the attached Resolution 2016-17 for adoption. Other than the standard conditions of Z.C. No. 906 v approval, the Planning Commission did not require any other conditions specific to this case be included. Z.C. No. 906 RESOLUTION NO. 2016-17 A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR A SWIMMING POOL/SPA, WALLS, FIRE PIT, BARBECUE, POOL EQUIPMENT, AND A VARIANCE TO EXCEED 2.5' HIGH AVERAGE FOR ASSOCIATED WALLS IN ZONING CASE NO. 906 AT 27 CREST ROAD WEST, (LOT 174 -B -MS), ROLLING HILLS, CA (GOLDENBERG). THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS DOES HEREBY FIND, RESOLVE AND ORDER AS FOLLOWS: Section 1. An application was duly filed by Mr. and Mrs. Goldenberg for a 1,375 square foot pool with infinity edge, with several terraced retaining walls ranging from 1' to 4'8" high for pool area, associated grading totaling 388 cubic yards, 64 square feet of pool equipment enclosed with 5' high maximum wall, and a 5' high wall to enclose a master bath courtyard for privacy. A new 68 square foot barbecue structure and a 40 square foot fire pit are also proposed. The privacy wall will not average out to 2.5' in height, thus the variance request. Section 2. The Planning Commission conducted duly noticed public hearings to consider the application on May 17, 2016, on June 21, 2016 at a field trip and an evening meeting on the same day. The applicants were notified of the public hearings in writing by first class mail. Evidence was heard and presented from all persons interested in affecting said proposal and from members of the City staff and the Planning Commission having reviewed, analyzed and studied said proposal. The applicants' representative was in attendance at the public hearings. Section 3. The property is zoned RAS-2 and the gross lot area is 4.5 acres. The net lot area is 3.81 acres or 165,986 square feet. The property is currently developed with a 14,683 square foot residence and a 1,173 square foot garage, a 7,000 square foot recreation court, 1,690 square feet of entryways, 624 square feet of trellises, and a 200 square foot service yard. In 2004 the previous owner was granted an administrative approval to convert the then existing 996 square foot stable into part of the residence (used now as a recreation room) and attached it via a solid roof breezeway to the main residence. As this was an addition of under 25% of the size of the then residence, it was approved administratively. At that time the previous property owner elected to set aside an area on the property for a future stable/corral. In 2007 and 2015 administrative approvals were granted for interior remodel of the residence. Reso. 2016-17 27 Crest Road West Section 4. The project is exempt from the California Environmental Quality Act (CEQA) pursuant to Section 15303, Class 3 exemption Guidelines. Section 5. Sections 17.46.020 and 17.16.200G require a development plan to be submitted for Site Plan Review for grading and for swimming pools exceeding 800 square feet, and Section 17.16.190F requires a Site Plan review for walls over 3 feet in height. With respect to the Site Plan Review application for grading and for the improvements the Planning Commission makes the following findings of fact: A. The proposed development is compatible with the General Plan and surrounding uses because the proposed project complies with the requirement of low profile, low -density residential development with sufficient open space between surrounding structures. The project conforms with development standard requirements for lot coverage and disturbance of the Zoning Ordinance. The grading for the improvements is minor (388 cubic yards) on a large lot and it mostly consists of excavation for the larger pool. The resulting slopes will match the slopes currently surrounding the outdoor amenities and therefore the lot would not have the appearance of having unnatural terrain, as all of the grading blends into a natural, existing looking condition. The tiered walls range in height from 1' to 4'8" high for the pool area and will average out to 2'6". The tiered walls are being introduced to avoid having 5' high retaining walls around the pool and at the back of the infinity edge, and will be screened by landscaping so as to reduce the visual impact of the development. The swimming pool will be located in a flat area behind the house on a portion of the property away from any other residence and street and will not be visible or obtrusive to neighbors. The 3,458 square foot on grade deck will not be visible from any street or neighbors. Regarding requested Site Plan Review from Zoning Ordinance Section 17.16.150 relating to walls over 3 feet in height, the wall to enclose the area for the pool equipment is proposed in an area that has two existing walls already and is in a depressed area, away from the primary living area. A 3' high wall would not adequately screen the pool equipment. The other 5' high maximum wall proposed to enclose a courtyard adjacent to the master bath would provide security and privacy for the residents as large windows overlook the existing living spaces and proposed pool and deck area and it replaces a previously existing wall that was located further out from the residence. This proposed configuration would leave more open space between the residence and the proposed pool area. B. The development plan substantially preserves the natural and undeveloped state of the lot because the new improvements will not cause the lot to look overdeveloped. The proposed development will be located on an area that is already flat, adjacent to the great room where the indoor pool was demolished. Significant portions of the 4.5 acre lot will be left undeveloped so as to maintain open space on the property. The nature, condition, and development of adjacent uses, Reso. 2016-17 27 Crest Road West O buildings, and structures and the topography of the lot have been considered, and the construction will not adversely affect or be materially detrimental to the adjacent uses, buildings, or structures because the proposed improvements will be constructed on a portion of the lot which is least intrusive to surrounding properties, will be screened and landscaped with plants and shrubs, is of sufficient distance from nearby residences so that the proposed project will not impact the view or privacy of surrounding neighbors. C. The proposed development, as conditioned, is harmonious in scale and mass with the site, the natural terrain and surrounding residences. The proposed project is consistent with the scale of the neighborhood, as it is on a large lot. The lot coverage maximums set forth in the Zoning Code will not be exceeded. D. The development plan follows natural contours of the site to the maximum extend practicable to accomplish groomed and usable areas of the lot. Natural drainage courses will not be affected by the project. Grading will not modify existing drainage channels nor redirect drainage flow. The project is not located in a canyon or on existing slopes that exceed 25%. E. The project preserves much of the existing vegetation elsewhere on the lot and will introduce drought -tolerant landscaping, which is compatible with and enhances the rural character of the community, and the landscaping will provide a buffer or transition area between private and public areas. A landscaping plan has been filed with the City. F. The proposed development is sensitive and not detrimental to the convenience and safety of circulation for pedestrians and vehicles because the proposed development will utilize the existing driveway. Section 6. Sections 17.38.010 through 17.38.050 of the Rolling Hills Municipal Code permit approval of a Variance granting relief from the standards and requirements of the Zoning Ordinance when exceptional or extraordinary circumstances applicable to the property prevent the owner from making use of a parcel of property to the same extent enjoyed by similar properties in the same vicinity or zone. In proposing walls that do not average out to 2.5' high Variances are required to grant relief from Section 17.16.190F for walls. Two maximum 5' high walls that will not average out to 2.5' high are proposed. One 5' maximum high wall encloses the pool equipment and one 5' maximum high wall provides privacy to the master bath courtyard. With respect to the aforementioned requests for Variance, the Planning Commission finds as follows: Reso. 2016-17 27 Crest Road West A. There are exceptional circumstances and conditions on the subject property as follows: Regarding requested variance from Zoning Ordinance Section 17.16.190F relating to walls not averaging out to 2.5' feet in height, the wall to enclose the area for the pool equipment is proposed in an area that has two existing 5 -6 ' walls already and is in a depressed area, away from the primary living area. A lesser wall would not adequately screen the pool equipment. The other 5' high maximum wall proposed to enclose a courtyard adjacent to the master bath would provide security and privacy for the residents as large windows overlook the existing living spaces and proposed pool and deck area. The variance is necessary for the preservation and enjoyment of a substantial property right possessed by other property owners in the same vicinity and zone but which is denied to the property in question by strict application of the code. The property right which otherwise would be enjoyed is the ability to adequately screen the pool equipment in a location that would ensure noise is buffered, and to ensure privacy for the residents and their guests from the master bathroom. B. The granting of the Variance would not be materially detrimental to the public welfare or injurious to the properties or improvements in such vicinity and zone in which the property is located in that the degree of deviation from the allowed average of walls is relatively minor because the walls are very short in length and do not span over a large area. Further, the proposed improvements would not be visible from the adjoining street or private properties and therefore are not expected to result in any visual or privacy impacts. The pool equipment area is tucked away and will not be visible by residents or neighbors. The privacy wall will be screened with landscaping. C. In granting of the Variance the spirit and intent of the Zoning Ordinance will be observed in that the proposed walls construction will be orderly, attractive, and will not affect the rural character of the community. The subject proposed structures are in the rear of the property and will not impact the proposed future stable and corral area and will not impact the use of the existing structures. D. The Variance request is consistent with the General Plan of the City of Rolling Hills because the proposed structures comply with the General Plan requirement of low profile, low -density residential development with sufficient open space between surrounding structures. The property is located above the adjacent property to rear and due to the large size of the properties and sloped conditions there is large open space between any structures on subject property and the adjacent properties. Reso. 2016-17 27 Crest Road West E. The Variance is consistent with the portions of the County of Los Angeles Hazardous Waste Management Plan relating to siting and siting criteria for hazardous waste facilities. Section 7. Based upon the foregoing findings, the Planning Commission hereby approves the Site Plan Review and Variance in Zoning Case No. 906 for new 1,375 square foot pool with infinity edge, with several terraced retaining walls ranging from 1' to 4'8" high for pool area, associated grading totaling 388 cubic yards, 64 square feet of pool equipment enclosed with 5' high maximum wall, and a 5' high wall to enclose a master bath courtyard for privacy, a 68 square foot barbecue structure and a 40 square foot fire pit subject to the following conditions: A. The Site Plan and Variance approvals shall expire within two years from the effective date of approval if construction pursuant to this approval has not commenced within that time period, as required by Section 17.38.070 and 17.46.080 of the Rolling Hills Municipal Code, or the approval granted is otherwise extended pursuant to the requirements of these sections. B. It is declared and made a condition of the approval, that if any conditions thereof are violated, this approval shall be suspended and the privileges granted thereunder shall lapse; provided that the City has given the applicants written notice to cease such violation, the opportunity for a hearing has been provided, and if requested, has been held, and thereafter the applicant fails to correct the violation within a period of thirty (30) days from the date of the City's determination. C. All requirements of the Building and Construction Ordinance, the Zoning Ordinance, LA County Building Code and of the zone in which the subject property is located must be complied with unless otherwise set forth in the Permit, or shown otherwise on an approved plan. D. The lot shall be developed and maintained in substantial conformance with the site plan on file dated May 11, 2016, and a concept landscaping plan, with condition to retain certain vegetation, and dated May 11, 2016 except as otherwise provided in these conditions. E. The working drawings submitted to the Department of Building and Safety for plan check review must conform with the development plan approved with this application. A copy of the conditions of this Resolution shall be printed on plans approved when a building permit is issued and a copy of such approved plans, including conditions of approval, shall be available on the building site at all times. F. Prior to obtaining a building permit a detailed landscaping plan shall be submitted to the Planning Department. To maximum extent practicable, the existing trees and shrubs shall remain, or be replaced. Reso. 2016-17 27 Crest Road West G. If landscaping of 5,000 square foot area or greater is introduced or redeveloped, the landscaping shall be subject to the requirements of the City's Water Efficient Landscape Ordinance. Any plants introduced for this project shall not grow into a hedge but be offset. The landscaping plan shall utilize to the maximum extent feasible, plants that are native to the area and are consistent with the rural character of the community. H. A drainage plan shall be prepared and submitted to the City's Building Department for review and approval, and the project shall comply with their requirements. The applicants, at all times, shall maintain the drainage devices in good working condition and free of debris and vegetation. I. A licensed professional preparing construction plans for this project for Building Department review shall execute a Certificate affirming that the plans conform in all respects with this Resolution approving this project and including conformance with all of the conditions set forth therein and the City's Building Code and Zoning Ordinance. Further, the person obtaining a building permit for this project shall execute a Certificate of Construction stating that the project will be constructed according to this Resolution and any plans approved therewith. J. Grading for this project shall not exceed 388 cubic yards which includes 260 cubic yards of excavation from the swimming pool that may be exported. K. Structural lot coverage shall not exceed 27,373 square feet, or 16.1% (with allowable deductions). Total lot coverage shall not exceed 30.4% or 50,464 square feet, as approved by this Variance. Building Pad coverage on the 74,316 square foot residential pad shall not exceed 25.8%. L. Disturbance for the pool/spa, barbecue, fire pit, walls, and future proposed stable/corral will not exceed 56,417 square feet or 33.9% M. The future set -aside area for the stable and corral area of minimum of 1,000 square feet, shall be retained on the property at all times. N. A minimum of four -foot level path and/or walkway, which does not have to be paved, shall be provided around the perimeter of the project. O. The pool equipment area shall be enclosed. Per LA County Building Code, pool barrier/fencing shall be required for the pool. Reso. 2016-17 27 Crest Road West P. During construction, conformance with the air quality management district requirements, stormwater pollution prevention practices, county and local ordinances and engineering practices so that people or property are not exposed to undue vehicle trips, noise, dust, and objectionable odors shall be required. Q. During and after construction, all parking shall take place on the project site and there shall be no parking on the common driveway. During construction, to maximum extend feasible, employees of the contractor shall car-pool into the City. R. During construction, the property owners shall be required to schedule and regulate construction and related traffic noise throughout the day between the hours of 7 AM and 6 PM, Monday through Saturday only, when construction and mechanical equipment noise is permitted, so as not to interfere with the quiet residential environment of the City of Rolling Hills. S. The property owners shall be required to conform with the Regional Water Quality Control Board and County Public Works Department Best Management Practices (BMP's) requirements related to solid waste, drainage and storm water management. T. A minimum of 50% of the construction material spoils shall be recycled and diverted. The hauler shall provide the appropriate documentation to the City. U. The project must be reviewed and approved by the Rolling Hills Community Association (RHCA) Architectural Review Committee prior to the issuance of building permit. Perimeter easements and trails, if any, shall remain free and clear of any improvements including, but not be limited to fences -including construction fences, any hardscape, driveways, landscaping, irrigation and drainage devices, except as otherwise approved by the RI-ICA. V. The contractor shall not use tools that could produce a spark, including for clearing and grubbing, during red flag warning conditions. Weather conditions can be found at: http://www.wrh.noaa.gov/lo,Qmain.php?suite=safety&page=hazard definitions#DIRE. It is the sole responsibility of the property owner and/or his/her contractor to monitor the red flag warning conditions. Should a red flag warning be declared and if work is to be conducted on the property, the contractor shall have readily available fire distinguisher. W. All requirements of the Building and Construction Code, the Zoning Code, and of the zone in which the subject property is located must be complied with. The applicant shall comply with all requirements of the Lighting Ordinance of the City of Rolling Hills (RHMC 17.16.190 E), pertaining to lighting on said property Reso. 2016-17 27 Crest Road West CD X. Prior to finaling of the project an "as graded" and an "as constructed" plans and certifications shall be provided to the Planning Department and the Building Department to ascertain that the completed project is in compliance with the approved plans. In addition, any modifications made to the project during construction, shall be depicted on the "as built/as graded" plan. Y. Until the applicants execute an Affidavit of Acceptance of all conditions of this approval, the approvals shall not be effective. Such affidavit shall be recorded together with the resolution. PASSED, APPROVED AND ADOPTED THIS 19th DAY OF JULY 2016. BRAD CHELF, CHAIRMAN ATTEST: HEIDI LUCE, CITY CLERK Any action challenging the final decision of the City made as a result of the public hearing on this application must be filed within the time limits set forth in section 17.54.070 of the Rolling Hills Municipal Code and Code of Civil Procedure Section 1094.6. STATE OF CALIFORNIA COUNTY OF LOS ANGELES ) §§ CITY OF ROLLING HILLS ) Reso. 2016-17 27 Crest Road West I certify that the foregoing Resolution No. 2016-17 entitled: A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR A SWIMMING POOL/SPA, WALLS, FIRE PIT, BARBECUE, POOL EQUIPMENT, AND A VARIANCE TO EXCEED 2.5' HIGH AVERAGE FOR ASSOCIATED WALLS IN ZONING CASE NO. 906 AT 27 CREST ROAD WEST, (LOT 174 -B - MS), ROLLING HILLS, CA (GOLDENBERG). was approved and adopted at a regular meeting of the Planning Commission on July 19, 2016 by the following roll call vote: AYES: NOES: ABSENT: ABSTAIN: and in compliance with the laws of California was posted at the following: Administrative Offices. CITY CLERK Reso. 2016-17 27 Crest Road West INCORPORATED JANUARY 24, 1957 NO. 2 PORTUGUESE BEND ROAD ROLLING HILLS, CA 90274 (310) 377-1521 FAX (310) 377-7288 Agenda Item No. 7A Mtg. Date: 7-19-16 TO: HONORABLE CHAIRMAN AND MEMBERS OF THE PLANNING COMMISSION FROM: YOLANTA SCHWARTZ, PLANNING DIRECTOR APPLICATION NO. SITE LOCATION: ZONING AND SIZE: APPLICANT: REPRESENTATIVE: PUBLISHED: PROJECT RE -NOTICED: MAY 5, 2016, JUNE 9, 2016, JULY 7, 2016 AND CONSIDERATION OF A RESOLUTION OF APPROVAL ZONING CASE NO. 895 10 BOWIE ROAD (LOT 4-CRA) RA -S-1, 1.6 ACRES (EXCL. ROADWAY EASEMENT) PANG JUI YIU CRISS GUNDERSON, ARCHITECT DECEMBER 3, 2015 REQUEST AND RECOMMENDATION 1. The applicants request a Site Plan Review to construct a new 5,270 square foot single family residence, 848 square foot garage, 6,000 square foot basement, 640 square foot swimming pool and spa, various retaining walls, ranging from 6" curb to 5' in height, with mostly 3' and 4' walls, service yard, entryway, covered porches, outdoor kitchen, a new 400' long driveway and grading of 8,946 cubic yards of dirt, of which 8,360 cubic yards will be exported, (4,303 cubic yards will be generated from excavation of the basement and swimming pool and is allowed to be exported). Variances are requested to encroach with the residence, basement, two light wells, covered entry, service yard, several of the walls over 3' in height into the rear, side and front setbacks, to locate a portion of the swimming pool and pool equipment area, the set aside area for a stable and portion of the corral in front yard and a portion of the corral within front setback; to exceed the maximum permitted total lot coverage and disturbed area of the net lot; to construct walls that do not average out to 2.5' in height, to exceed the maximum permitted coverage with a driveway of the front setback (21.2%) and to export dirt off site. ZC NO. 89510 Bowie Rd. 2. At the June 21, 2016 Planning Commission meeting, (by 4-0 vote, Commissioner Kirkpatrick was absent), following review of the revised project, the Planning Commission directed staff to prepare a Resolution approving the project as presented during the Planning Commission meeting that relocates the pool and pool equipment partially in the front yard, per the request of a neighbor, and to export 8,360 cubic yards of which 4,057 cubic yards of dirt is allowed to be exported (balance requiring variance - 4,057). Those two items were not part of the project previously reviewed by the Commission and therefore, needed to be re -noticed. A notice for the additional requests was published in the PV Peninsula News on July 7, 2016 and mailed to residents within 1,000 -foot radius. As of the writing of this report no inquires or objections were received. 3. The project architect submitted the development to RHCA for a request of a license agreement to construct the double/terraced walls along the driveway in the side easement. Since that time he has restudied the desirability of the walls and was able to remove the double walls in the easement, by instead grading out into the easement, and will be seeking the Association's approval for grading in the easement. Therefore, the proposed plan is to further eliminate retaining walls along the driveway; however the retaining wall substituting this condition would be 5' high. The retaining wall at the start of the driveway (south side) will be 5' in height and as it follows the driveway, it will be 4' at approximately the area of the future stable and corral and then taper off to a 4' then 3' and to a 6" curb. Along the north side of the driveway, the retaining wall will range from 4' to 5', with 12" and 6" curb along the middle of the driveway. A site plan reflecting this condition was submitted to the Planning Department. 4. It is recommended that the Planning Commission open the public hearing and after taking testimony and deliberation, review and consider the attached Resolution No. 2016-18 for adoption. 5. The Resolution contains standard finding, facts and conditions including: • All graded areas shall be landscaped • Prior to obtaining a building permit landscaping plan to be submitted • The pool, pool equipment area and walls to be screened from view from the street and neighbors • If new trees are introduced they shall not grow into neighbors' views • All utility lines shall be placed underground • City's Low Impact Development (LID) ordinance and Water Efficient Landscaping ordinance requirements must be met • Best management construction measures shall be implemented, such as a construction fence may be required, dust control, parking of construction vehicles on site, and if necessary on the roadway easement immediately adjacent to the site • Per LA County Building Code, pool barrier and/or fencing shall be required ZC No. 895 10 Bowie Road • Before final, as graded and as built certifications shall be submitted to confirm that project was built per plans • RHCA approval is required 6. The chart included with this staff report reflects the changes that were made to the project since the first submittal. In addition, during the proceedings the applicant, in response to the Planning Commission concerns, amended the project by lowering the building pad by 6 feet vertically at the north edge - front, and gently slope back to the south; and by about 5' in the back and there will be no fill placed between the road and the house, except where necessary for the driveway. ZC No. 895 10 Bowie Road ZC NO. 89510 BOWIE ROAD -REVISIONS Changes discussed at 6/21/16 PC meeting in bold. SITE PLAN REVIEW EXISTING PREVIOUSLY PROPOSED RA -S- 1 ZONE SETBACKS Front: 50 ft. from front easement line Side: 20 ft. from property line Rear: 50 ft. from rear property line STRUCTURES (Site Plan Review required for new residence and if size of structure increases by more than 999 s.f. in a 36 -month period). SINGLE FAMILY RESIDENCE WITH GARAGE, GAZEBO, TO BE DEMOLISHED NEW RESIDENCE WITH BASEMENT, POOL, WALLS, DRWY, OUTDOOR KITCHEN, SET -ASIDE STABLE/CORRAL LOCATION Residence Garages Stable (future) Service yard Pool Pool Equipment Outdoor kitchn. Att. porches Entry Basement REVISED 6/21/16 NEW RESIDENCE WITH BASEMENT, POOL, WALLS, DRWY, OUTDOOR KITCHEN, SET -ASIDE STABLE/CORRAL LOCATION Residence Garages Stable (future) Service yard Pool/spa Pool Equipment Outdoor kitchn. Att. Porches Entry Basement Residence Garage Gazebo Service yard 3506 sq.ft. 702 sq.ft 128 sq.ft. 96 sq. ft. 6269 sq.ft. 848 sq.ft. 450 sq.ft. 96 sq.ft. 640 sq.ft. 20 sq.ft. 144 sq.ft 550 sq.ft. 98 sq.ft. 6000sq. ft. 5270 sq.ft. 848 sq.ft. 450 sq.ft. 96 sq.ft. 640 sq.ft. * 20 sq.ft. * 144 sq.ft. 550 sq.ft. 98 sq.ft. 6000 sq.ft. TOTAL 4,432 sq.ft TOTAL 9,115 sq.ft TOTAL 8,116 sq.ft. STRUCTURAL LOT COVERAGE (20% maximum) 7.2% (with allowances) TOTAL LOT COVERAGE (35% maximum) 38.8% 8,995 sq.ft. w/ allowed deductions or 15.1 % of 59,376 sq.ft. net lot area 23,345 sq.ft. w/allowances or 39.3% of 59,376 sq.ft. net lot area 7,996 sq.ft. w/allowed deductions or 13.5% of 59,376 sq.ft. net lot area 22,466 sq.ft. w/ allowances or 37.6% of 59,376 sq.ft. net lot area -variance request 48.5% of 14,708 sq.ft. residential pad BUILDING PADS (30% guideline) Residence, garage, gazebo Stable (minimum 450 sq. ft.) 10 Bowie, ZC No. 895 — R 41.6% (to be demolished) None existing 47.4% of 16,882 sq.ft. residential pad 21.7% on future 2,073 sq.ft. pad 21.7% on future 2,073 sq.ft. pad GRADING N/A 4,209 c.y. cut and 4,075 c.y. fill 134 c.y. from basement (export) 8,946 c.y. total cut and fill; fill only - 293 c.y. 8,360 c.y. to be exported of which 4,303 c.y. is allowed to be exported; balance -variance request Revised, lower pad & no fill, except where necessary for the driveway. Site Plan Review required if excavation and/or fill or combination thereof that is more than 3 feet in depth; must be balanced on site (except basement) DISTURBED AREA 91.5% 96.6% 59,376 sq.ft. of net lot area 94.0 % (55,820 sq.ft.) of 59,376 sq.ft. of net lot area (40% maximum; any graded building pad area, any remedial grading (temporary disturbance), any graded slopes and building pad areas, and any nongraded area where impervious surfaces exist.) STABLE (min. 450 SQ.FT. N/A 450 sq. ft future proposed 550 sq. ft. future corral 450 sq. ft. future proposed 550 sq. ft. future corral & 550 SQ.FT. CORRAL) STABLE ACCESS N/A Off main private driveway Off main private driveway ROADWAY ACCESS Existing Existing driveway approach, slightly reconfigured. Existing driveway approach, slightly reconfigured -Traffic Commission approved. VIEWS N/A Planning Commission review Planning Commission condition PLANTS AND ANIMALS N/A Planning Commission review Planning Commission condition • *A portion of the swimming pool to be moved into the front yard area and pool equipment to be moved entirely into the front yard area, and will be below the ground in a vault in sloped area. • Walls were reconfigured to remove a double/terraced retaining walls along the front portion of the driveway 10 Bowie, ZC No. 895 — R Thursday, July 14, 2016 2:16:44 PM Pacific Daylight Time Subject: 10 Bowie Rd Zoning Case #895 -Modification Date: From: To: CC: Thursday, July 14, 2016 1:45:49 PM Pacific Daylight Time ADRIENNE BARNARD <zazzi2@cox.net> Yolanta Schwartz <ys@cityofrh.net> Adrienne Barnard <zazzi2@cox.net>, Bill Barnard <wlbarnarddds@hotmail.com> Ms. Yolanda Schwartz Planning Commission Director Planning Commission of the City of Rolling Hills No. 2 Portuguese Bend Rd. Rolling Hills, CA 90274 Dear Ms. Schwartz, I would like to voice my strong objection to the proposed plan for construction in Zoning Case #895 at 10 Bowie Rd. I specifically object to: 1- All encroachment into the rear, side & front setbacks. 2- Exceeding the maximum permitted lot coverage & disturbed area of the net lot. We moved to Rolling Hills specifically for it's rural character & spaciousness. Encroaching on the setbacks takes away from the wonderful character of our street & neighborhood. If we wanted to he surrounded by large homes on small lots, we would have moved to Rolling Hills Estates. The fact that there will be so much extension into the front setback by any building or driveway is not acceptable. I feel that this will begin a sad precedent of oversized homes on small lots. As we drive down Bowie Road on the way to our home in the cul de sac, this will be an eyesore. It should be noted, that when we built our home in 1995, we initially wanted a larger home. We decided to obey the rules of our community to preserve the "feel of living in the country." Thank you for your time. Sincerely, Adrienne & Bill Barnard RECEIVED JUL 14 2016 City of Rolling rillls By Page 1 of 1 RESOLUTION NO. 2016-18 A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR CONSTRUCTION OF A NEW SINGLE FAMILY RESIDENCE, GARAGE AND A BASEMENT, SWIMMING POOL, VARIOUS OUTDOOR AMENITIES AND VARIOUS RETAINING WALLS, A NEW DRIVEWAY AND GRADING; REQUEST FOR VARIANCES TO ENCROACH WITH THE RESIDENCE, BASEMENT, LIGHT WELLS AND SEVERAL WALLS INTO SETBACKS, OF WHICH SOME DO NOT AVERAGE OUT TO 2.5' IN HEIGHT, TO LOCATE THE POOL, POOL EQUIPMNENT AND FUTURE STABLE AND CORRAL IN FRONT YARD AREA, TO EXCEED THE MAXIMUM PERMITTED TOTAL LOT COVERAGE AND DISTURBED AREA, TO EXCEED THE MAXIMUM PERMITTED COVERAGE OF FRONT SETBACK WITH THE DRIVEWAY AND TO EXPORT DIRT IN ZONING CASE NO. 895, AT 10 BOWIE ROAD, (LOT 4- CRA), ROLLING HILLS, CA (PANG JUI YIU). THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS DOES HEREBY FIND, RESOLVE AND ORDER AS FOLLOWS: Section 1. An application was duly filed by Mr. Pang Jui Yiu with respect to real property located at 10 Bowie Road, Rolling Hills (Lot 4-CRA) requesting a site plan review to construct a new 5,270 square foot single family residence, 844 square foot garage, 550 square feet covered porches, 98 square foot entryway, 6,000 square foot basement, 640 square foot swimming pool and spa, outdoor kitchen, various retaining walls, ranging from 6" curb to 5' in height, with mostly 3' and 4' high walls, service yard, entryway, covered porches, outdoor kitchen, a new 400' long by 20' wide driveway and grading of 8,946 cubic yards of dirt, of which 8,360 cubic yards will be exported. Variances are requested to encroach with the residence, basement, two light wells, service yard, several of the walls over 3' in height into the required setbacks, to locate a portion of the swimming pool and pool equipment area, the set aside area for a stable and portion of the corral in front yard and a portion of the corral within front yard setback; to exceed the maximum permitted total lot coverage and disturbed area of the net lot; to construct walls that do not average out to 2.5' in height, to exceed the maximum permitted coverage with a driveway of the front setback (21.2%) and to export dirt off site. Section 2. The Planning Commission conducted duly noticed public hearings to consider the application at their regular meeting on December 15, 2015 and at the request of the applicants the case was continued for several months to May 17, 2016, at which time the Planning Commission visited the site to view the silhouette of the project and held a meeting in the evening on May 17. At the May 17, 2016 meetings, the Planning Commission and the neighbors expressed concerns with the project and the applicant revised the project to address their concerns and a revised project was reviewed at a public hearing held on June 21, 2016. Neighbors within 1,000 -foot radius were notified of the public hearings and notices were published in the Peninsula News on May 5, 2016, June 9, 2016 and July 7, 2016. The applicant and his agents were notified of the public hearings in writing by first class mail and the applicant's agents were in attendance at the hearings. Evidence was heard and presented from 10 Bowie Rd. I \J all persons interested in affecting said proposal, and from members of the City staff. Once the project was revised, there were no objections to the project. The Planning Commission have reviewed, analyzed and studied said proposal. Section 3. The property is zoned RAS-1 and the lot area excluding the roadway easement is 1.6 acres. For development purposes the net lot area of the lot is 59,376 square feet or 1.36 acres. The existing 3,506 square foot house and 703 square feet detached garage and a gazebo will be demolished. The existing house encroaches 1,110 square feet and up to 28' into the rear yard. There are some existing retaining walls that will remain including a 7 -foot tall wall that is within the rear yard setback and which has nonconforming status. That wall will not be altered or extended but will be maintained at the existing height. Section 4. The Planning Commission finds that the project qualifies as a Class 3 Exemption, and is therefore categorically exempt from environmental review under the California Environmental Quality Act. Section 5. Section 17.46.030 requires a development plan to be submitted for Site Plan Review and approval before any grading requiring a grading permit or any new building or structure may be constructed or any expansion, addition, alteration or repair to existing buildings may be made which involve changes to grading or an increase to the size of the building or structure by 999 square feet or more in any thirty-six (36) month period. With respect to the Site Plan for grading, the new residence, garages, porches, swimming pool/spa, retaining walls, driveway and other miscellaneous structures, the Planning Commission makes the following findings of fact: A. The proposed development is compatible with the General Plan, the Zoning Ordinance and surrounding uses because the proposed structures comply with the General Plan requirement of low profile, low -density residential development with sufficient open space between surrounding structures and maintaining sufficient setbacks to provide buffers between residential uses. The project is situated on a large, but topographically is constraint; however the development would not cause the lot to be overdeveloped. The existing residence encroaches into the rear setback. The proposed project would encroach less than the existing residence. The proposed project is situated away from the road so as to reduce the visual impact of the development. The project conforms with Zoning Code structural coverage requirements, however due to the Fire Department requirement for a new driveway, the total lot coverage (hardscape and structures) exceeds the maximum permitted. The net lot area of the lot is 59,376 square feet. The structural net lot coverage is proposed at 13.5%, which includes all of the structures, with allowance for permitted deductions, (20% max. permitted); and the total lot coverage proposed, including the future stable would be 37.6%, (35% max. permitted). The lot was mostly disturbed when it was developed and when Bowie Road was created and is currently over 91% disturbed. The disturbed area of the lot is proposed to increase by 2.5% for a total of 94%. B. The project substantially preserves the natural and undeveloped state of the lot by minimizing building coverage. The topography and the configuration of the lot, have been considered, and it was determined that the proposed development will not adversely affect or be materially detrimental to adjacent uses, buildings, or structures, because the proposed 10 Bowie Rd. 2- project will be constructed largely on an existing building pad, will be the least intrusive to surrounding properties, will be screened and landscaped with trees and shrubs, is of sufficient distance from nearby residences so that it will not impact the view or privacy of surrounding neighbors, and will permit the owners to enjoy their property without deleterious infringement on the rights of surrounding property owners. The lot will not be built up or raised to accommodate the development, but will utilize to the maximum extent practicable the existing topography. The grading for the driveway will follow the topography. C. The proposed development, as conditioned, is harmonious in scale and mass with the site, and is consistent with the scale of the neighborhood when compared to new residences in the vicinity of said lot. Significant portions of the lot will be left undeveloped. The project will be screened from the road and all neighbors. D. The development plan will introduce additional landscaping, which is compatible with and enhances the rural character of the community, and the landscaping will provide a buffer or transition area between private and public areas. E. The proposed development is sensitive and not detrimental to the convenience and safety of circulation for pedestrians and vehicles because the project will capture all resident and visitor parking on -site with guest parking spaces on the fire turn around area and in the garage. The applicants will continue to utilize the existing driveway approach to the residence, but widen it by 6' and construct a new driveway along the front of the parcel. F. The project conforms to the requirements of the California Environmental Quality Act (CEQA) and is exempt pursuant to Section 15303 of the CEQA Guidelines. Section 6. Sections 17.38.010 through 17.38.050 of the Rolling Hills Municipal Code permit approval of a Variance granting relief from the standards and requirements of the Zoning Ordinance when exceptional or extraordinary circumstances applicable to the property prevent the owner from making use of a parcel of property to the same extent enjoyed by similar properties in the same vicinity or zone. The following Variances from the RHMC are required: Sections 17.16.190F - the project exceeds the allowed maximum permitted average of walls height of 2.5 -feet, and walls in setbacks Section 17.16.070 - the maximum permitted disturbance of the lot will exceed 40% and will be at 94%, whereas the existing disturbance is at 91.5%; and the total lot coverage will exceed the maximum permitted coverage of 35% and will be 37.6% Section17.12.190 Setbacks; portion of the residence and basement, light wells, walls, trash area, entry porch and portion of the future corral will be located in setbacks Section 17.16.150, the new driveway will cover more than 20% of the front setback, (21.2% of front setback) Section 17.12.250 Yards; the pool, pool equipment future stable and corral will be located in the front yard area of the lot Section 15.04.150 Balanced Cut and Fill Ratio; 8,260 cubic yards of dirt will be exported, of which 4,403 c.y is allowed to be exported, the remainder requires a variance. 10 Bowie Rd. 3 With respect to the aforementioned requests for Variances, the Planning Commission finds as follows: A. There are exceptional circumstances and conditions on the subject property as follows: Regarding requested variance relating to the height and encroachment into the setbacks with the proposed retaining walls, some of which do not average out to 2.5' in height the longest retaining walls in the front are necessary for the construction of the driveway. The configuration of the lot is such that the existing driveway does not meet the Fire Department requirements and a new driveway must be built. The topography of the lot in the area along the front is steep and in order to avoid additional grading the walls are necessary. The retaining wall in the rear is necessary so that the building pad could be kept at its existing elevation and not be raised, but yet allow a larger than existing house to be built on the lot. The sloping condition at the rear of the lot in this area makes a retaining wall necessary to protect the proposed residence. There already exists a retaining wall that supports the rear slope and the new wall will aid in this respect. Al of the retaining walls will match the sloped topography, will blend in with the natural slope and will not be seen from the street. Regarding the requested variances from Section 17.16.070, relating to maximum structural coverage limits and disturbance of the lot: the property is uniquely constrained by the steep topography both at the front and the rear of the building pad. The lot coverage is relatively small compared to the amount of coverage that is associated with the improvements, specifically the proposed driveway, which is necessary to meet the Fire Code standards. The proposed additional disturbance to provide a slightly larger building pad and to exceed the maximum permitted total lot coverage is mostly due to the requirement for the driveway and is minimal and will result in better vehicle access. The lot has been previously graded and disturbed to over 91%, when the road (Bowie Rd.) and the equestrian trail located along the westerly property line were graded out and constructed. To the maximum extent practicable the proposed development works within and follows the existing conditions on the lot. Regarding the requested variances from Sections 17.12.190 encroachment into setbacks; 17.16.150 coverage with driveway; and 17.12.250 Front yards; the encroachments is minimal given the configuration and topography of the lot. Over 1,100 square feet of the existing residence encroaches up to 28' into the rear setback and the new residence will lessen this condition where 1,064 square feet of the residence will encroach up to 18.5' into the rear setback. Due to the configuration and topography of the lot, without more grading of the hillsides, there is no other area to place a pool, future area for stable and corral and the driveway, than the front of the residence or in setbacks. The steepness and configuration of the lot makes it impossible to meet the code requirement and provide for a reasonable size house on the lot. In general, the existing residence encroaches into the rear yard setback and the requested encroachment is less than the existing. The topography of the lot, specifically the steep slopes, paired with the applicants' desire to minimize grading by utilizing the existing residential pad, create difficulty in remaining outside of the setbacks. 10 Bowie Rd. 4 Regarding the requested variance from Section 15.04.150 Balanced Cut and Fill Ratio where 8,360 cubic yards of dirt will be exported, 4,303 cubic yards of dirt will be generated from the excavation of the basement and swimming pool, which is allowed to be exported. The additional 4,057 cubic yards, which is to be exported, is riecessary in order to not to raise the building pad. To keep the dirt on site would mean raising the building pad and/or the steepness of the slopes, which in turn would require a variance for slopes of over 2:1 grade. Due to the already steep slopes surrounding the building pad and the neighbors' desire to not to raise the pad, it is necessary to export the dirt. B. The variances are necessary for the preservation and enjoyment of a substantial property right possessed by other property owners in the same vicinity and zone but which is denied to the property in question by strict application of the code. The property right which otherwise would not be enjoyed is the ability to utilize a portion of the front yard and setbacks for superior access and entry/exit than currently exists and which meets the Fire Code, as well as not to substantially change to exiting topography and configuration of the lot. C. The granting of the Variances would not be materially detrimental to the public welfare or injurious to the properties or improvements in such vicinity and zone in which the property is located in that the proposed reconfigured driveway access increases safety to the property. Additionally, the improvements to the property will not be easily viewed from adjacent properties, and the street and visual impacts are minor. To the maximum extent practicable the proposed development works within and follows the existing conditions on the lot and therefore will not be materially or otherwise detrimental to the public. The project would not affect any neighbor's views and therefore would not affect property values, and would be screened from the street. D. In granting of the Variances the spirit and intent of the Zoning Ordinance will be observed in that the proposed driveway, retaining walls, and the new residential construction will be orderly, attractive, and while it encroaches into the rear setback, it will be buffered and mediated with landscaping and a wall to ensure it will not affect the rural character of the community. The subject property retains a suitable stable and corral set -aside area and the development will not impact use of the set aside for stable and corral. E. The Variances request are consistent with the General Plan of the City of Rolling Hills because the proposed structures comply with the General Plan requirement of low profile, low -density residential development with sufficient open space between surrounding structures. F. The proposed development is sensitive and not detrimental to the convenience and safety of circulation for pedestrians and vehicles because the proposed development will utilize the existing driveway approach, however, the new driveway will comply with the Fire Code requirements and will be long and wide to accommodate emergency vehicles and where no cars would need to be parked in the roadway easements. 10 Bowie Rd. 5 G. The Variances are consistent with the portions of the County of Los Angeles Hazardous Waster Management Plan relating to siting and siting criteria for hazardous waste facilities. Section 7. Based upon the foregoing findings, the Planning Commission hereby approves Zoning Case No. 895 a Site Plan Review for grading, for a new residence with a basement and garage, new pool/spa, covered porch, new driveway, site retaining walls that exceed 3 feet in height; and Variances to encroach with a portion of the residence, basement, retaining walls and light wells into setbacks and with pool, spa and future stable/corral into the front yard area; to exceed the maximum permitted disturbance and total lot coverage, to exceed coverage of the front setback with a driveway, to exceed 2.5' high walls on the average and to export dirt subject to the following conditions: A. The Site Plan and Variances approvals shall expire within two years from the effective date of approval as defined in Sections 17.46.080 and 17.38.070, unless otherwise extended pursuant to the requirements of this section. B. It is declared and made a condition of this approval that if any conditions thereof are violated, this approval shall be suspended and the privileges granted thereunder shall lapse; provided that the applicant has been given written notice to cease such violation, the opportunity for a hearing has been provided, and if requested, has been held, and thereafter the applicant fails to correct the violation within a period of thirty (30) days from the date of the City's determination. C. All requirements of the Buildings and Construction Ordinance, the Zoning Ordinance, and of the zone in which the subject property is located must be complied with unless otherwise set forth in this permit, or shown otherwise on an approved plan. D. The lot shall be developed and maintained in substantial conformance with the site plan on file dated July 13, 2016 except as otherwise provided in these conditions. The working drawings submitted to the Department of Building and Safety for plan check review shall conform to the approved development plan. All conditions of the Site Plan Review and Variance approvals shall be incorporated into the building permit working drawings and where applicable complied with prior to issuance of a grading or building permit from the building department. The conditions of approval of this Resolution shall be printed onto building plans submitted to the Building Department for review and shall be kept on site at all times. E. Prior to submittal of final working drawings to the Building and Safety Department for issuance of building permits, the plans for the project shall be submitted to City staff for verification that the final plans are in compliance with the plans approved by the Planning Commission. F. A licensed professional preparing construction plans for this project for Building Department review shall execute a Certificate affirming that the plans conform in all respects 10 Bowie Rd. 6 1.2 to this Resolution approving this project and all of the conditions set forth therein and the City's Building Code and Zoning Ordinance. Further, the person obtaining a building and/ or grading permit for this project shall execute a Certificate of Construction stating that the project will be constructed according to this Resolution and any plans approved therewith. G. Structural lot coverage of the lot shall not exceed 8,116 square feet or 13.5% of the net lot area, (with allowed deductions) in conformance with lot coverage limitations (20% maximum). The total lot coverage proposed, including structures and flatwork shall not exceed 22,466 square feet or 37.6% of the net lot area, which includes the driveway. H. Grading for this project shall consist of 8,946 cubic yards of cut and 293 cubic yards of fill with 8.360 cubic yards to be exported. The disturbed area of the lot, including the future stable and corral area shall not exceed 94%. I. The residential building pad shall be 14,708 square feet and will have coverage of 48.5%. J. 1,060 square feet of the new residence and of the basement may encroach up to 18.5' into the rear setback. K. The applicant shall comply with all requirements of the Lighting Ordinance of the City of Rolling Hills (RHMC 17.16.190 E), pertaining to lighting on said property, roofing and material requirements of properties in the Very High Fire Hazard Severity Zone. L. All utility lines to the development shall be placed underground, subject to all applicable standards and requirements. M. A drainage plan, as required by the Building Department shall be prepared and approved by City Staff prior to issuance of a construction permit. Such plan shall be subject to LA County Code requirements. N. All graded slopes shall be landscaped. Prior to obtaining a building permit, a landscaping plan shall be submitted to the City in conformance with Fire Department Fuel Modification requirements and for graded slopes. Prior to finaling the project, trees and shrubs shall be planted to screen the project from the neighbors. Any shrubs and trees shall not form a hedge like screen but be offset and they shall be of a height, which shall not at any time grow into residents' view. The landscaping plan shall utilize to the maximum extent feasible, plants that are native to the area and are consistent with the rural character of the community. If landscaping of 5,000 square foot area or greater is introduced or redevelop, the landscaping shall be subject to the requirements of the City's Water Efficient Landscape Ordinance. 10 Bowie Rd. .3 7 O. The pool and pool equipment area shall be screened with landscaping. Per LA County Building Code, pool barrier/fencing shall be required. The swimming pool and the spillway shall utilize the most quiet and technologically advanced equipment to dampen the sound. P. The west and south side setback lines in the vicinity of the construction for this project shall remain staked throughout the construction. A construction fence may be required. Q. The project must be reviewed and approved by the Rolling Hills Community Association (RHCA) Architectural Review Committee prior to the issuance of building permit. Perimeter easements and trails, if any, shall remain free and clear of any improvements including, but not be limited to fences -including construction fences, any hardscape, driveways, landscaping, irrigation and drainage devices, except as otherwise approved by RHCA. R. A minimum of 50% of any construction materials must be recycled or diverted from landfills. The hauler of the materials shall obtain City's Construction and Demolition permit for waste hauling prior to start of work, and provide the appropriate documentation to the City. S. During construction, the property owners shall be required to schedule and regulate construction and related traffic noise throughout the day between the hours of 7 AM and 6 PM, Monday through Saturday only, when construction and mechanical equipment noise is permitted, so as not to interfere with the quiet residential environment of the City of Rolling Hills. T. The contractor shall not use tools that could produce a spark, including for clearing and grubbing, during red flag warning conditions. Weather conditions can be found at: httpjwww.wrh.noaa.gov/lox/main.php?suite=safety&page=hazard definitions#FIRE. It is the sole responsibility of the property owner and/or his/her contractor to monitor the red flag warning conditions. Should a red flag warning be declared and if work is to be conducted on the property, the contractor shall have readily available fire distinguisher. U. During construction, all parking shall take place on the project site and, if necessary, any overflow parking shall take place within nearby unimproved roadway easement adjacent to subject site. There shall be no blocking of adjacent driveways or blocking of the trail. During construction a flagmen shall be used to direct traffic when it is anticipated that a lane may be impeded. V. The property owners shall be required to conform with the Regional Water Quality Control Board and County Public Works Department Best Management Practices (BMP's) requirements related to solid waste, drainage and storm water management and comply with the City's Low Impact development Ordinance (LID). Further the property owners shall be required to conform to the County Health Department requirements for a septic system. 10 Bowie Rd. X. Prior to finaling of the project an "as graded" and an "as constructed" plans and certifications shall be provided to the Planning Department and the Building Department to ascertain that the completed project is in compliance with the approved plans. In addition, any modifications made to the project during construction, shall be depicted on the "as built/as graded" plan. Y. The applicant shall execute an Affidavit of Acceptance of all conditions of this permit pursuant to Zoning Ordinance, or the approval shall not be effective. The affidavit shall be recorded together with the resolution. PASSED, APPROVED AND ADOPTED THIS 19TH DAY OF JULY 2016. BRAD CHELF, CHAIRMAN ATTEST: HEIDI LUCE, CITY CLERK Any action challenging the final decision of the City made as a result of the public hearing on this application must be filed within the time limits set forth in Section 17.54.070 of the Rolling Hills Municipal Code and Code of Civil Procedure Section 1094.6. 10 Bowie Rd. 9 STATE OF CALIFORNIA COUNTY OF LOS ANGELES ) §§ CITY OF ROLLING HILLS I certify that the foregoing Resolution No. 2016-18 entitled: A RESOLUTION OF THE PLANNING COMMISSION OF THE CITY OF ROLLING HILLS GRANTING APPROVAL OF A SITE PLAN REVIEW FOR CONSTRUCTION OF A NEW SINGLE FAMILY RESIDENCE, GARAGE AND A BASEMENT, SWIMMING POOL, VARIOUS OUTDOOR AMENITIES AND VARIOUS RETAINING WALLS, A NEW DRIVEWAY AND GRADING; REQUEST FOR VARIANCES TO ENCROACH WITH THE RESIDENCE, BASEMENT, LIGHT WELLS AND SEVERAL WALLS INTO SETBACKS, OF WHICH SOME DO NOT AVERAGE OUT TO 2.5' IN HEIGHT, TO LOCATE THE POOL, POOL EQUIPMNENT AND FUTURE STABLE AND CORRAL IN FRONT YARD AREA, TO EXCEED THE MAXIMUM PERMITTED TOTAL LOT COVERAGE AND DISTURBED AREA, TO EXCEED THE MAXIMUM PERMITTED COVERAGE OF FRONT SETBACK WITH THE DRIVEWAY AND TO EXPORT DIRT IN ZONING CASE NO. 895, AT 10 BOWIE ROAD, (LOT 4- CRA), ROLLING HILLS, CA (PANG JUI YIU). was approved and adopted at regular meeting of the Planning Commission on July 19, 2016 by the following roll call vote: AYES: NOES: ABSENT: ABSTAIN: and in compliance with the laws of California was posted at the following: Administrative Offices HEIDI LUCE, CITY CLERK 10 Bowie Rd. 10 INCORPORATED JANUARY 24, 1957 TO: FROM: APPLICATION NO. SITE LOCATION: ZONING AND SIZE: APPLICANT: REPRESENTATIVE: DATE PUBLISHED: NO. 2 PORTUGUESE BEND ROAD ROLLING HILLS, CA 90274 (310) 377-1521 FAX (310) 377-7288 Agenda Item No.: 7-B Mtg. Date: 07-19-16 HONORABLE CHAIRMAN AND MEMBERS OF THE PLANNING COMMISSION YOLANTA SCHWARTZ, PLANNING DIRECTOR WENDY STARKS, AICP, ASSOCIATE PLANNER ZONING CASE NO. 902 23 CREST ROAD EAST (LOT 132A -MS) RA -S-2, 6.02 ACRES (EXCL. ROADWAY EASEMENT) MR. JIM HYNES TAVISHA NICHOLSON, BOLTON ENGINEERING APRIL 7, 2016 JUNE 9, 2016 REQUEST AND RECOMMENDATION 1. The Planning Commission visited the site to view the silhouette of the proposed revised project in the morning of July 19, 2016. Previously, public hearings were held on April 19, 2016, and they visited the site in the morning of May 17, 2016 and continued the public hearing until later that same evening. More recently, the Planning Commission held a public hearing on June 21, 2016. 2. At the April 19, May 17, and June 21, 2016 meetings, several residents expressed concerns regarding water run-off from the proposed project and its impact, if any, on the downhill properties. Therefore, the Planning Commission requested that the City's grading/drainage engineer be present at the meeting on May 17, 2016. The City's grading/drainage engineer and a building official from LA County Public Works Dept. both visited the site and attended the evening meeting to address concerns about grading and drainage in general and specifically for the project. They advised that they will review and assess the plan once it has been submitted to them to ensure that proposed stormwater devices, whether dissipaters, biofiltration, cisterns or other method, (currently proposed cisterns and dissipaters), would adequately ensure that ZC NO. 902, 23 Crest E. the proposed project does not generate more sheet flow or storm water to the properties below then exists at present day with a vacant lot. 3. The applicant revised the submittal to remove all requests for variances, and eliminated the tennis court proposal. Also, they removed all fill from the lower pad by reconfiguring the proposed structures on the pad. Overall disturbance for the project decreased from 39.78% to 38.53%. 4. Following the June 21, 2016 meeting, in response to additional questions from the Planning Commission regarding the handling of the run-off from the property and retention of the water on site, the applicants' engineer prepared a hydrology analysis for the proposed method of storage system (cisterns) for 1 year storm, 2 year storm, 5 year storm, 10 year storm 25 year storm, 50 year storm and 100 year storm. The proposed storage system is designed for a 25 -year storm to store the difference in stormwater runoff volume between the pre and post development conditions. These terms mean the frequency of run off occurring from a storm falling on a saturated watershed. A 25 -year frequency design storm has a probability of 1/25 (4%) of being equaled or exceeded in any year. Meaning that there is a 4% probability of a 25 year storm and anything greater occurring in any year. The terms are a statistical designation; any storm can occur in any year regardless of what happened the previous year. The hydrology analysis for 23 Crest Rd W. is included. The engineers have also provided for Commissioners' information a Summary of Hydrologic Procedures and Analysis for Projects in LA County, which provides some basic background on Hydrology and terminology and calculations for designing retention systems based on the LA County Building Codes. This summary is also included. 5. With the previously proposed changes, the applicants request a Site Plan Review for the construction of a new 11,100 square foot residence and 11,100 square foot basement (was 11,500 square foot residence, 11,500 square foot basement), two garages totaling 1,540 square feet (both are now attached), 2,654 square feet of covered porches for the entire project (was 2,430 square feet), a new pool and spa totaling 864 square feet (was 900 square feet) with a 50 square foot pool equipment area, a 96 square foot service yard, a 270 square foot outdoor kitchen (was 510 square feet), a 400 square foot trellis near the 800 square foot guesthouse, a two-story stable with 1,300 square foot on the first level and a 792 square foot loft, a new driveway and turnaround access. Grading will entail a total of 51,625 cubic yards of dirt (12,455 c.y. cut and 11,670 c.y. fill; and 13,750 c.y. over -excavation and 13,750 c.y. recompaction) with 785 cubic yards to be exported. 6. It is recommended that the Planning Commission having seen the silhouette of the proposed project the field take public testimony and provide direction to staff. ZC No. 902 BACKGROUND 7. The property is zoned RAS-2 and the gross lot area is 7.05 acres. The net lot area for development purposes is 6.02 acres or 262,368 square feet. The existing property is currently vacant and has never been developed. 8. In 2015 the applicant requested to subdivide the existing vacant lot known as 23 Crest Road East, totaling 7.055 acres (gross) into 2 parcels. In February 2016 the applicant withdrew an application for a subdivision. 9. A natural drainage course is located along the western portion of the lot and a blue line stream, which is a part of the Klondike Canyon System, is located approximately 200 feet south of the southern property line of the lot. The lot is also located in proximity to the Geotechnical Hazardous area of the City, known as the Flying Triangle. A geotechnical and geological report prepared for the subdivision states that the crown of a landslide (Flying Triangle) is about 230 feet west of the southwestern portion of the lot. The single-family residence on the lot as it is currently proposed is categorically exempt pursuant to the California Environmental Quality Act (CEQA), Class 3. However, the Planning Commission may require additional information to aid them in the decision - making process and place conditions on the development, which are site specific. MUNICIPAL CODE COMPLIANCE 10. The new residence is proposed at 11,100 square feet and the first floor level will be about 15' below Crest Road East. The proposed residence will have a maximum ridge height of 18.5' above the finished floor, plus chimneys. The attached garages will have a maximum ridge height of 13' from finished floor. The basement is proposed to be 11,100 square feet and be contained entirely within the footprint of the new residence and will be 14' in depth. Per the applicant, the residence is proposed on the shallowest sloped area with a basement being added to increase the residence size while reducing the footprint. None of the proposed structures are in setbacks. 11. The lot drains to the southwest and south east of the property and the run-off is proposed to be collected and stored in two cisterns that are 50' long and 10' in diameter and located on the upper northeast portion of the lot under the driveway. A dissipater is proposed just southeast of the cisterns and the residence to help filter stormwater from the residential building pad. A second dissipater is located southeast of the guesthouse/stable pad to filter stormwater on the second pad. The dissipater has been repositioned from the previous submittal to point away from the residence directly below and to the south of the proposed project. ZC No. 902 During the Planning Commission proceedings for the subdivision, several letters were received from neighbors expressing their concern regarding drainage. Further, on the site visit and during the public hearings in May and June residents continued to express their concerns about drainage from the site. The applicant responded by providing 2 cisterns, removing the biofiltration unit, and repositioning the dissipater on guesthouse pad as described above. In the previously proposed request to subdivide the lot (since withdrawn), the applicant proposed containment cisterns as a method of controlling water run-off. Willdan Engineering, City's contracted engineering firm, reviewed the proposed containment system and deemed it adequate to protect the down hill properties from water run-off from the site. With the cistern method all new volume of water will be stored. The run- off would first pass through a pre-treatment system and then would enter into the cisterns. An overflow system will be installed to address times when the volume exceeds the capacity in the tanks, such as a pump, which will release the excess volume, possibly for irrigation, and will be collected in the dissipater to slowly be distributed into the canyon. As stated, LA County grading/ drainage engineer and the building official were present at the Planning Commission meeting on 5/17 and answered questions. The proposed drainage method will have to meet building code requirements. This project is subject to the City's Low Impact Development Ordinance, due to land' development activities for construction of a new single-family residence where one acre or more of land is disturbed, and where the project adds 10,000 square feet or more of impervious surface. (Chapter 8.32 of the Rolling Hills Municipal Code). 12. The applicant also proposes a new driveway off of Crest Road East. Per the Fire Department requirement, the driveway will be 20' wide and include a turn -around area to accommodate fire truck access. The proposed driveway apron was shifted by approximately 20 feet to the east, moved further back, away from Crest Road and is 9,875 square feet (was 10,650 square feet previously, and covers 17.48% of the front setback (was 27.9%). Per Section 17.16.150B driveways shall not cover more than 20% of the area of the setback in which they are located. The Traffic Commission reviewed and approved the previously proposed driveway access at their May 26th meeting. The Traffic Commission will review the newly revised and proposed apron on July 28, 2016 and their recommendation will be communicated to the Planning Commission. A not to exceed 3' high retaining wall with a swale is proposed along the north and east sides of the driveway. A 600 square foot parking pad (was 750 square feet) in front of the residence, and adjacent to the driveway is proposed to accommodate guest parking. Both meet Zoning Code provisions. 13. A stable with 1,300 square feet on the first floor and a 792 square foot loft with a 264 square foot covered porch and 2,250 square foot corral is proposed as part of the ZC No. 902 guesthouse building pad that will be accessed by both a 10' wide stable access on a 25% slope, accessed from Crest Road. A proposed (for pedestrians) 780 square foot stairway with 3' high maximum walls joins the residence pad and the guesthouse pad. A 3' high retaining wall is required just north of the stable and will have a swale behind it to collect drainage. Pursuant to the zoning code requirements the following is applicable to this request: REQUIREMENTS Minimum 6' wide access with roughened surface Stable, corral not to be located on slopes greater than 4:1 Not in front yard or side or front setback. May be located up to 25' in rear setback. Stable min. 35' from any residential structure PROPOSED 10 'wide access -way from Crest Road with roughened surface (not paved) Grading with 3' retaining wall; 2,500 cubic yards cut , 0 cubic yards fill, 750 cubic yards over - excavation and 750 cubic yards recompaction. Not proposed in any setback Proposed stable more than 35' from any residential structure. Stable is proposed with 4 stalls, 400 sf of agricultural storage, 73 sf feed room, and tack spact in the loft (792 sf) which is 37.9% of the structure Ground floor (1,300 sf.): 593 sf stalls, 234 sf center aisle, 73 sf feed room, 400 sf agricultural storage; Loft (792 sf is tack room) Agricultural uses: 1,300 sf (ground floor) 62.1% Stable building to be designed for rural and agricultural uses only, but may include storage for vehicles, household items Size to include the entire footprint including loft, if any Minimum of 60% shall be maintained for agricultural uses Maximum of 40% not to exceed 800 s.f. may bi maintained for a tack room use Tack area may have sanitary and kitchen amenities Tack area may have glazed openings Agricultural space entry doors to be min. 4'wide & 7.5' high; appearance of a stable door Loft is permitted Loft plate height may not exceed 7' Tack use area comprises 792 sf. or 37.9% Includes tack room/storage & bathroom Bathroom proposed; no kitchen Shall be a condition of approval. Shall be a condition of approval. Exterior area of stables may not to be paved Corral minimum 550 sf.; fenced and contiguous to stable. (Planning Commission may determine the size of a corral) Access slope not to exceed 25% ZC No. 902 Loft; proposed for tack room purposes The total height of the structure at its highest peak is proposed to be 21' with a 7' plate height shown for the loft. (Plate heights per condition of approval.) Dirt or D.G. (condition of approval) Proposed 2,250 sq. ft. corral enclosed with 3' high wall on north side From main driveway and Crest Road with 25% maximum slope Commercial uses or sleeping is not allowed Applicant is not proposing any commercial uses or sleeping in the stable The applicant must comply with all other requirements of Chapter 17.18 of the Zoning Ordinance pertaining to stables, as well as to all other regulations including, but not be limited to undergrounding of utility lines to the structures, lighting, roof material, Fire Department requirements and others. The following table lists stables /sizes approved since 2011. LOCATION SQUARE FEET/ NO. OF STORIES 11 Blackwater Cyn. Rd. 890 sq. ft. one story 5 Buggy Whip 890 sq. ft. one story 0 Chestnut 900 sq. ft. one story 9 Chuckwagon Rd. 1,296 sq. ft. first floor / 792 sq. ft. loft 2,088 sq.ft. total 10 Crest Rd. W. 735 sq. ft. first floor / 453 sq. ft. loft 1,188 sq.ft. total 49 Eastfield 600 sq. ft. one story 12 Johns Cyn. Rd. 735 sq. ft. one story 3 Meadowlark 480 sf. first floor / 360 sf. loft 840 sq.ft. total 29 Middleridge Rd. S. 2,160 sq. ft. first floor / 800 sf. loft with center aisle; 2,960 sq.ft. total 6 Portuguese Bend Rd. 450 sq. ft. one story 77 Crest Rd. E 3,456 sq. ft. first floor/ 235 sq.ft. loft with center isle; 3,691 sq.ft. total 1 Pine Tree Lane 2,976 sq. ft. one story 11 Saddleback 2,415 sq. ft. with 625 sq. ft. loft with center isle; 3,040 sq.ft. total 5 Pine Tree Lane 1,810 sq. ft. with 611 sq. ft. loft; 2,421 sq.f.t total 34 Saddleback Rd. Proposed 1,140 sq.ft. - one story 23 Crest Rd. E. Proposed 1,300 sq.ft. with 792 sq.ft. loft; total - 2,092 sq.ft. 14. An 800 square foot guesthouse is proposed with a 14.6' high maximum ridgeline plus chimneys. Section 17.16.210 (A)(5) of the Zoning Ordinance contains conditions for a guesthouse, subject to approval of a conditional use permit. These conditions, listed below, are intended to ensure that such structures are ancillary uses, do not eliminate an existing or future development for a stable and are not converted to other than permitted uses. ZC No. 902 REQUIREMENTS PROPOSED Shall not exceed eight hundred square feet An 800 square foot guesthouse is proposed. Shall not be located in the front yard or any setback. The guesthouse is not proposed to be in the front yard or any setback. A kitchenette and sanitary facility consisting of a shower, sink and toilet shall be permitted. Applicant proposes a kitchenette and a sanitary facility No vehicular access or paved parking area shall be developed within fifty feet of the guesthouse. The driveway is more than fifty feet away. Occupancy of the guesthouse shall be limited to persons employed on the premises, the immediate family of the occupants of the main residence or by the temporary guests of the occupants of the main residence. No temporary guest may remain in occupancy for more than thirty days in any six-month period. This is a standard condition of approval. Renting of a guesthouse is prohibited. This is a standard condition of approval. 15. The proposed disturbed area of the lot will be 101,090 square feet or 38.53%, of the net lot area which at the maximum allowed disturbance of 40% (Municipal Code 17.16.070B). Grading for this project is proposed to be 12,455 cubic yards of cut and 11,670 cubic yards of fill, 13,750 cubic yards of over -excavation, and 13,750 cubic yards of recompaction, for a total of 51,625 cubic yards of dirt and with 785 cubic yards to be exported. The cut/excavation will occur at the driveway, yard areas, and 4,800 cubic yards from the basement excavation. The fill will primarily be placed at the south side of the residential pad with 10,800 cubic yards accounting for yard areas, and 13,000 cubic yards recompaction. The guest house pad requires a cut of 3,250 cubic yards and fill of 750 cubic yards for recompaction. There is no fill on this lower pad. Maximum cut will be 16.75' for the basement excavation, 11.25' for the north driveway, 11' for the northeast corner, 11.25' for the northwest portion of the corral, and 11.5' for the northwest stable. 16. Two building pads are proposed. The residential building pad is proposed at 47,325 square feet and will have coverage of 15,405 square feet or 32.55% with allowed deductions, (30% max. guideline). This pad includes all the structures minus the guesthouse, stable and trellis. Pad 2 for the guesthouse and stable is proposed at 11,100 ZC No. 902 square feet with 2,389 square feet of coverage or 21.5% with allowed deductions for the trellis. 17. The structural net lot coverage is proposed at 19,074 square feet or 7.3%, and with allowed deductions would be 18,554 or 7.1%, (20% max. permitted); and the total lot coverage including the structures and all hardscape and flatwork will be 36,684 square feet or 14.0% (35% max. permitted) excluding allowable deductions. 18. It will be required that the utility lines to the residence and garages be placed underground. 19. Rolling Hills Community Association will review this project at a later date. 20. When reviewing a development application the Planning Commission must consider whether the proposed project meets the criteria for a Site Plan Review, and Conditional Use Permit, and must find that the proposed uses are consistent with the General Plan and development standards of the City, including provision for open space and maintaining rural environment and that the uses will not adversely affect adjacent properties. ZC NO. 902 NEARBY PROPERTIES For information onl Address House size in sq.ft. Lot Area (gross acres) 16 Crest Road E. 5,460* 1.51 17 Crest Road E. 8,796* (under construction) 9.64 18 Crest Road E. 6,700* 3.84 22 Crest Road E. 10,367* 5.34 26 Crest Road E. 3,904 4.76 29 Crest Road E. 4,766* 6.57 30 Crest Road E. 6,572* 4.72 34 Crest Road E. 6,387 4.87 56 Portuguese Bend Road 2,270 3.21 58 Portuguese Bend Road 2,166 6.96 Average 5,739 5.14 23 Crest Road. E 11,100 Proposed 7.05 NOTE: The above do not include garages, basements or accessory structures. SOURCES: Assessors' records * City records ZC No. 902 CRITERIA FOR APPROVAL OF CONDITIONAL USE PERMIT: 17.42.050 Basis for approval or denial of conditional use permit. The Commission (and Council on appeal), in acting to approve a conditional use permit application, may impose conditions as are reasonably necessary to ensure the project is consistent with the General Plan, compatible with surrounding land use, and meets the provisions and intent of this title. In making such a determination, the hearing body shall find that the proposed use is in general accord with the following principles and standards: A. That the proposed conditional use is consistent with the General Plan; B. That the nature, condition and development of adjacent uses, buildings and structures have been considered, and that the use will not adversely affect or be materially detrimental to these adjacent uses, building or structures; C. That the site for the proposed conditional use is of adequate size and shape to accommodate the use and buildings proposed; D. That the proposed conditional use complies with all applicable development standards of the zone district; E. That the proposed use is consistent with the portions of the Los Angeles County Hazardous Waste Management Plan relating to siting and siting criteria for hazardous waste facilities; F. That the proposed conditional use observes the spirit and intent of this title. SITE PLAN REVIEW CRITERIA 17.46.010 Purpose. The site plan review process is established to provide discretionary review of certain development projects in the City for the purposes of ensuring that the proposed project is consistent with the City's General Plan; incorporates environmentally and aesthetically sensitive grading practices; preserves existing mature vegetation; is compatible and consistent with the scale, massing and development pattern in the immediate project vicinity; and otherwise preserves and protects the health, safety and welfare of the citizens of Rolling Hills. 17.46.050 Required findings. A. The Commission shall be required to make findings in acting to approve, conditionally approve, or deny a site plan review application. B. No project which requires site plan review approval shall be approved by the Commission, or by the City Council on appeal, unless the following findings can be made: 1. The project complies with and is consistent with the goals and policies of the general plan and all requirements of the zoning ordinance; ZC No. 902 2. The project substantially preserves the natural and undeveloped state of the lot by minimizing building coverage. Lot coverage requirements are regarded as maximums, and the actual amount of lot coverage permitted depends upon the existing buildable area of the lot; 3. The project is harmonious in scale and mass with the site, the natural terrain and surrounding residences; 4. The project preserves and integrates into the site design, to the greatest extent possible, existing topographic features of the site, including surrounding native vegetation, mature trees, drainage courses and land forms (such as hillsides and knolls); 5. Grading has been designed to follow natural contours of the site and to minimize the amount of grading required to create the building area; 6. Grading will not modify existing drainage channels nor redirect drainage flow, unless such flow is redirected into an existing drainage course; 7. The project preserves surrounding native vegetation and mature trees and supplements these elements with drought -tolerant landscaping which is compatible with and enhances the rural character of the community, and landscaping provides a buffer or transition area between private and public areas; 8. The project is sensitive and not detrimental to the convenient and safe movement of pedestrians and vehicles; and 9. The project conforms to the requirements of the California Environmental Quality Act. ZC No. 902 ZONING CASE NO. 902 23 Crest Road East SITE PLAN REVIEW EXISTING PREVIOUSLY PROPOSED May 17, 2016 PROPOSED July 19, 2016 RA -S- 2 ZONE SETBACKS VACANT LOT NEW RESIDENCE ACCESSORY STRUCTURES, SPORTS COURT, DETACHED GARAGE, GUEST WITH NEW RESIDENCE WITH ACCESSORY STRUCTURES, GUEST HOUSE, ATTACHED GARAGES, POOL AND STABLE Front: 50 ft. from front easement line Side: 35 ft. from property line Rear: 50 ft. from rear easement line HOUSE STRUCTURES Residence Basement Garage attached Garage attached Pool/spa Pool Equip. Stable Recreation Court Att. Cov. Porches Trellis Outdoor Kitchen Service yard 0 sq.ft. 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft 0 sq.ft Residence *Basement 14' Garage attached Garage detached Pool/spa Pool Equip. Stable (future) Recreation Court Att. Cov. Porches Entryway Trellises Outdoor Kitchen Service Yard 11,500 sq.ft. 11,500 sq.ft. 770 sq.ft. 770 sq.ft. 900 sq.ft. 50 sq.ft. 450 sq.ft 7,150 sq.ft 2,430 sq.ft. 410 sq.ft. 400 sq.ft. 510 sq.ft. 96 sq.ft Residence *Basement 14' Garage attached Garage attached Pool/spa Pool Equip. Stable Guest House Att.Cov.Porches Trellises Outdoor Kitchen Service Yard 11,100 sq.ft. 11,100 sq.ft. 770 sq.ft. 770 sq.ft. 864 sq.ft. 50 sq.ft. 1,300 sq.ft 800 sq.ft 2,654 sq.ft. 400 sq.ft. 270 sq.ft. 96 sq.ft (Site Plan Review required if size of structure increases by at least 1,000 sq.ft. and has the effect of increasing the size of the structure by more than 25% in a 36 -month period). TOTAL 0 sq.ft. TOTAL 25,436 sq.ft. TOTAL 19,074 sq.ft STRUCTURAL LOT COVERAGE 0% 24,916 sf w/ allowances 9.5% of 262,368 sq.ft. net lot area 18,554 sf w/allowances 7.1% of 262,368 sq.ft. net lot area (20% maximum) TOTAL LOT COVERAGE 0% 44,841 w/ allowances or 17.1% of 262,368 sq.ft. net lot area 36,684 w/allowances or 14.0% of 262,368 sq.ft. net lot area (35% maximum) BUILDING PADS (30% guideline) N/A N/A 34.1% of 48,780 sq.ft. pad 71.36% of 10,650 sq.ft pad 32.55% of 47,325 sq.ft. pad 21.5% of 11,100 sq.ft pad Residential Guesthouse GRADING N/A 12,510 cy cut, 12,510 cy fill, 19,500 cy overexcavation, 19,500 cy recompaction = balanced on site. 51,625 c.y. total; 12,455 cy cut, 11,670 cy fill, 13,750 cy overexcavation, 13,750 cy recompaction = 785 cy to be Site Plan Review required if excavation and/or fill or combination thereof that is more than 3 feet in depth and covers more than 2,000 sq.ft.) must be balanced on site. exported DISTURBED AREA N/A 39.99% (104,915sq.ft. of the net lot area) 38.5% (101,090 sq.ft. of the net lot area) (40% maximum; any graded building pad area, any remedial grading (temporary disturbance), any graded slopes and building pad areas, and any nongraded area where impervious surfaces exist.) STABLE (min. 450 SQ.FT. N/A 450 sq. ft. 550 sq. ft. 1,300 sq. ft. (with 792 sq. ft. loft) 2,250 sq. ft. & 550 SOFT. CORRAL) STABLE ACCESS N/A Proposed from Residence Pad Proposed from Crest Road ROADWAY ACCESS N/A Off Crest Road East Off Crest Road East VIEWS N/A Planning Commission condition Planning Commission condition PLANTS AND ANIMALS N/A Planning Commission condition Planning Commission condition *Basements are not included in calculation for structural square footage. SPIERER 1 WOODWARD 1 CORBALIS 1 GOLDBERG ATTORNEYS AT LAW A PROFESSIONAL CORPORATION O PLEASE RESPOND TO. 707 TORRANCE BOULEVARD SUITE 200 REDONDO BEACH. CALIFORNIA 90277-3400 TELEPHONE (310) 540-3199 TELECOPIER (310/ 316.1823 July 14, 2016 www praclIcallawyer.com ORIGINAL VIA FIRST CLASS MAIL COPY VIA EMAIL (WHERE INDICATED) James Hynes 20252 Bancroft Circle Huntington Beach, CA 92646 Email: jimphynes@gmail.com Rolling Hills Community Association Attn: Board of Directors/ Architectural Committee, Kristen Raig, Mgr. 1 Portuguese Bend Road Rolling Hills, CA 90274 Email: kraig@rhca.net Wilidan Engineering 13191 Crossroads Parkway N., Suite 405 Industry, CA 91746-3443 Email: ekiepke@willdan.com Anthony Inferrera and Associates 401 E. Ocean Blvd. Long Beach, CA 90802 RECEVED JUL 14 2016 City of Rolling Hills By Re: 23 Crest Road East, Rolling Hills, California Greetings, ❑ PLEASE RESPOND TO: 2 INVERNESS DRIVE EAST SUITE 200 ENGLEWOOD. COLORADO 80112 TELEPHONE (303) 792-3456 TELECOPIER (303) 792-9092 Raine/Hynes (160841/02) Bolton Engineering 25834 Narbonne Ave. Suite 210 Lomita, CA 90717 Email: office@boltonengineering.com City of Rolling Hills ATTN: Planning Commission/ City Council Planning Director, Yolanda Schwartz City Manager, Ray Cruz 2 Portuguese Bend Road Rolling Hills, CA 90274 Email: ys@cityofrh.net; rcruz@cityofrh.net Hamilton & Associates, Inc. 1641 Border Avenue - Torrance, CA 90501 Email: information@Hamilton-Associates.net Ann L. Johnson 461 W. 6i6 St. Suite 300 San Pedro, CA 90731 We are the attorneys for Charlie and Pia Raine, Lucy Agid, Joseph and Erna Johnson, Paige Lademan, John and Heidi Mackenbach, Randa Marin, Duncan and Michelle McBride, Paul Mitchell, Catherine Neel, Robert O'Shea, Damoder and Soumitri Reddy, Terry and Lynne James Hynes, et al. Re: Charlie and Pia Raine, el al. July 14, 2016 Page 2 of 5 Rhodes, Gordon and Carmen Schaye. Constance Schwartzman, Greg and Heidi Stager, Ali Tashakori. and Mark and Paula Thomas, with respect to the proposed development of the property located at 23 Crest Road East, Rolling Hills, California (hereinafter referred to as the Subject Property). Those parties have engaged this law office to protect and perhaps later to redress rights which they have. and rights which they may acquire in the future, against the City of Rolling Hills, against the owners of the Subject Property (hereinafter referred to as "Ownership"), against their advisors, experts, advocates, representatives and against any other potentially responsible parties or entities with respect to Ownership's intentions to attempt construction, to conduct water management. to engage in debris management or to perform any earth movement or any other activity that may result. directly or indirectly, in property damage and physical injury. The Flying Triangle Landslide was first visible in 1980 as a small crack on Portuguese Bend Road immediately below what is now the Mackenbach home. The most likely trigger of the Flying Triangle Landslide was the 1980 construction of a new home at 62 Portuguese Bend Road, directly below the "crack" in the road. This home required grading of 775 cubic yards of earth. What eventually followed was a devastation of the neighborhood. both in financial terms and in the huge emotional toll on those whose homes were affected and whose lives were dislocated. Enclosed is a map that will help everyone understand the geography. The landslide eventually affected all but a few homes in the Flying Triangle. Four of the as yet unaffected homes lie directly below or adjacent to the proposed construction project at the Subject Property. Grading decisions and water management choices have proven to be the actions that, together with inherent geologic conditions, triggered the Flying Triangle Landslide. The proposal for development at the Subject Property calls for 51,625 cubic yards of grading (compared with the 775 cubic yards that collapsed The Flying Triangle in the first place). This grading would occur all directly above an active landslide. During grading, "benching" the lot will require a redistribution of weight, directly above a home with no movement but whose rear and west side yard are severely affected by the slide. If the Mackenbach home moves. the two others, with no historic movement, that share its slide affected driveway may or may not be accessible. You will be held responsible for making decisions that may damage or destroy their homes or prevent access to them. The Little Klondike Canyon watershed is fed mainly by a drain at the foot of 18 Crest Road East, collecting water from other properties on the North side of Crest Road East as well as the road itself. That drain continues to lubricate the slide and needs to be removed. Little Klondike Canyon is the only natural drainage course for the Subject Property, but the canyon does not flow to the ocean. It is blocked just below the Mackenbach property due to slide debris. More James Hynes, et al. Re: Charlie and Pia Raine. et al. July 14, 2016 Page 3 of 5 water in the canyon is begging for disaster. You must be certain that no drainage contributions will be made into the landslide area in any proposed plans. The decisions you make in the approval process for this home can have catastrophic results on those living below. Every square foot of lot coverage adds additional concentrations of water to other parts of the property. Every cubic yard of soil moved for this project adds to the possibility that unintended consequences may affect nearby homeowners. In hindsight, with knowledge today of an active landslide, would your predecessors have chosen to reject the approval of some of the homes in the Flying Triangle or would they have chosen to minimize the impact on the land through less grading, smaller structures and careful consideration of drainage? Of course they would. Their decisions were made without the knowledge you now possess; That below the proposed development you are faced with an active landslide that encompasses 70 acres and affects the homes of 27 families whose geologic instability and unpredictability has been tragically proven. Responsible development would necessarily entail minimal earth movement and no contribution of water to the properties below, including those already affected by land movement. We know that. as good people, you will want to do that. For our clients' pan, we will settle for nothing less. The following excerpts are from a manual titled "Natural Hazards Mitigation Plan" published November 2nd, 2004 as an emergency preparedness manual for the city and are offered to assist in decision -making. Landslide Conditions: Landslides are often triggered by periods of heavy rainfall. Earthquakes, subterranean water flow and excavations may also trigger landslide. Certain geologic formations are more susceptible to landslide than others. Human activities, including locating development near steep slopes, can increase susceptibility to landslide events. Landslides on steep slopes are more dangerous because movements can be rapid. Although landslides are a natural geologic process, the incidence of landslide and their impacts on people can be exacerbated by human activities. Grading for road construction and development can increase slope steepness. Grading and construction can decrease the stability of a hill slope by adding weight to the top of the slope, removing support at the base of the slope, and increasing water content. Other human activities effecting landslide include: excavation. drainage and groundwater alterations, and changes in vegetation. Natural Hazards Mitigation Plan (11/04), Page 104. What is a Debris Flow? A debris or mud flow is a river of rock, earth and other materials, including vegetation that is saturated with water. This high percentage of water gives the debris flow a very rapid rate of movement down a slope. Debris flows often with speeds greater than 20 mile per hour, and can often move much faster. This high rate of speed makes debris flows extremely dangerous to people James Hynes. et al. Re: Charlie and Pia Raine. et al. July 14, 2016 Page 4 of 5 and property in its path. Natural Hazards Mitigation Plan (11/04), Page 103. (This provision is cited in regards to any future flow in Little Klondike, directly above the Lademan, Stager and Raine properties. Slope modification during grading can render slopes unstable. Slope instability occurs when bedding planes intersect the slope face of either natural slopes or designed cut slopes. Site specific investigations are necessary to determine potential slope instability problems at specific sites. Landslide are considered "potentially active", meaning they could be reactivated in the future, either by excessive rainfall, introduction of artificial water in the slope (landscaping irrigation/broken water or septic systems), or improper site design or grading practices. Grading activities must consider these geologic constraints as a condition of project approval. Natural Hazards Mitigation Plan (11/04), Page 106. All of the clients represented by this law office in this matter are determined to do two things: 1) They intend to be good neighbors and to participate in good faith in support of allowing the owners of the Subject Property to utilize their property in a completely responsible way, and 2) They intend to hold responsible all parties who proceed in any manner that results or may result in property damage or physical injury. Actions taken on the Subject Property could have significant and potentially catastrophic consequences for our clients. The current lack of a responsible and specific water management plan for the proposed improvements on the Subject Property combined with 51,625 cubic yards of grading is irresponsible and unnecessarily puts our clients at risk. The purpose of this letter is to place its recipients on notice of some of the risks and responsibilities they undertake if any change in the Subject Property results in property damage or personal injury of any kind, to anyone, anywhere, anytime. Sincerely. SPIERER. WOODWARD, CORBA LIS & GOLDBERG Attorneys at A Pro oration Sven F'Sp SFS:bjw Enclosure cc: Charlie and Pia Raine Lucy Agid Joseph and Erna Johnson Robert O'Shea Damoder and Soumitri Reddy Terry and Lynne Rhodes James Hynes. et al. Re: Charlie and Pia Raine, et al. July 14, 2016 Page 5 of 5 Paige Lademan John and Heidi Mackenbach Randa Marin Duncan and Michelle McBride Paul Mitchell Catherine Neel Gordon and Carmen Schaye Constance Schwartzman Greg and Heidi Stager Ali Tashakori Mark and Paula Thomas ...r0, O'SHEA d.. rain driveway RNC p ntonRoad ls start GtacoftheaFid yi naTrian9e La slide ci tseisse Litt le Klondike Block d9 Littleriondikeronyn BigKlondikeClnyon as Representeds s f- 1` 1 SUMMARY OF HYDROLOGY ANALYSIS 23 CREST ROAD EAST PR 11114t BY: BOLTON ENGINF9,1 ROLLING HILLS EERING COMMISSIONNG DATE: JULY 9, 2016 .JUL 11 2v;; City of Holing Hi11s By Title: STORMWATER RUNOFF CALCULATION SUMMARY 23 CREST ROAD EAST ROLLING HILLS, CA 90274 Client: JAMES P. HYNES LIVING TRUST 4147 MARITIME ROAD RANCHO PALOS VERDES, CA 90274 OIle:Jey 6.2010 Bolton Engineering Corp 25834 Norbonne Avenue Ste. 21Lsa'°ASS"0 `,e` Lomita, Co. 90717 La Phone: (310) 325-5580 Fox: (310) 325-5581 Uem: met bet 13115 Sleet 1 Oi 1 J: \13315_Hynes\dwg\C—Site Plon_2016_G.dwg 7/8/2016 2:28:43 PM ROOF RUNOFF COLLECTED I GUTTERS AND INTO DOWNSPOU ATRIUM DRAW TO COLLECT RUNOFF AT BASE OF BERM ARTHEN BERM TO PREVENT WATER FROM GOING OVER FILL SLOPE UNDERGROUND DRAINAGE UNE. ALL GRATES AND DOWNSPOUTS CONNECT TO THIS. EW RESIDENCE OOF RUNOFF COLLECTED IN GUTTERS AND INTO DOWNSPOUTS FINISHED GRADE PRETREATMENT SYSTEM 10 UNDERGROUND OSTERN EACH 58' LONG RIVEWAY CATCH BASIN. COLLECTS DRIVEWAY AND PARKING PAD RUNOFF LESS MANHOLES CONNECTING PIPE OUTLET TO PUM UMP MANHOLE. BOTH CISTERNS CONNECT TO THIS AND OUTLET IS IRRIGATION OR OTHER APPROVED DISCHARGE GRDING GRADE OVERFLOW PIPE TO OUTLET STRUCTURE • ROSIDN CONTROL OUTLET STRUCTURE FOR OVERFLOW. KISTNG GRADE • SCHEMATIC DIAGRAM STORMWATER RUNOFF 23 CREST ROAD EAST ROLLING HILLS. CA 90274 JAMES P. HYNES LIVING TRUST 4107 MARITIME ROAD RANCHO PALOS VERDES. CA 90274 �/ BBolton Engineering Corp. - 25834 Noncom Avenue Ste. 210 a Lomb. Ca. 60717 Maa Roo (310) 325-5580 M Fa(310)3255501 DON Al LION Olmeg a. ULM :113318 Hyne&dgICSIIe PMn_2016 GAME 7/11/20160:28:10 AM __ P) Il PEA PAD ERDSiDN - CONTROL CUTLET 47,t,, 6X YjALy HEIGHT " — E)Qs1?Np ROW 'CRcST H?:0: -Q APN 756,7-0.11= r ` GRAPHIC SCALE TO 0 (IN FEET) I Inch .80 P. UNDERGROUND STORMWATER STORAGE OFSIGN NARRATIVE. DC WOW WRAC( 5YSIW WAS 1646 10 SW DC 01T0 1¢ PA 510NFIOp WOW WILCO WON DC MC APO POST WIFLOPWENT WWAOS. T[ WOW RAM PROW P CARP LRASCRW 945 opium TO R SWUM OW DC DS1[PAY. M WILCO O =USIIM NC SIGNS B AS MOOR DC OSTpt pS OOMR KNOW FRO. 0Q ICCWAY. ROY 0009V12 MO DC MOM WO P05 AAA DC CWT pL rI151 PASS TOWN A OMSd MM COS 102-TREANOR WO MC 1101 WO ono DC SIOIA2 001101%. TOE WAS R 100 4COSS (WI CT N COWER AND W IOrp EON WNW WU R WWII/ OVATE A WOW OC MOOT nip DC 000 DC MOOT FILL 1100 DII01 MO A YAMps OOOIILVIC A NAq. OIO TIC RUNOFF WOES A WOOD ADO. A 9dLlL POW VOL WI ON MO POW iK PitA TO A 51000 MO WOW LOCATOR POIOSLAY FOR WATCH WW1 AT ROAM PW101p11K MOM KWIC Ql7 TIC STORAGE O S A wooly DC VFW M µ WOW PAL RW W TWO. AN O 1p PPE NC 16O WIR DPWOM 04 110 05-//27 STRJO EM5WOW DC PAP CYOAAIOG FOR OW WO OF TIC OW AMC YAMTKNCOI RTA&S An BMOC --------------------------- -------------------- ------------------- IC ------------- ----------------- i• RUENCE OF_________ __ — _ __ _ (�/yP� _______� Tom_ (CLC f•wB—A^ I ,L� I PROPERTY UNE EASEMENT SETBACK (E) CONTOUR (P) CONTOUR (P) STRUCTURE (P) HARDSCAPE (P) COVERED PORCH (P) CISTERN (P) CORRAL (P) WATERSHED AREAS (P) FLOW PATH (E) FLOWPATH C — 1300 — CZ CT C HYDROLOGY EXHIBIT STORMWATER RUNOFF 23 CREST ROAD EAST ROLLING HILLS. CA 90274 Pthw JAMES P. HYNES LIVING TRUST a Bolton Engineering Corp. ]5131 NEEENs WOW Ste. 210 4147 MARITIME ROAD Lamb; 80]1] RANCHO PALOS VERGES. CA 90274 s, Rpq(31 (310) 3255-5580 \/ FAX 010)J23-5581 Sall MIPS IS OM awl of 112315_HynestlwgIC.SMe Plan 2011 G.4wg 7111/20188:18.53 AM BREn6wluEUT SYSTEM. PRA AOlEJn11Y. A0TEm1NY Teo® eWpm./ mmlm 5-a RRSmml TATGV D- - OR RISERS RS mN Id. PETumer PIPES SPED PER PROJECT Rmu.EENT5 uNTTIE CAMELS PLR E Ad[o rtv PROJECT REQUIREMENTS al I. "mCR PEOPEPANMRAT. PLAN VIEW i 'ACAS PLUM On¢ ' CLACKR41. EE ERCPEER PLANS. I. WELL EAAOED WAMAP AI. RATA UM CLASS LL R OR EOEVAMFNT. CpOACT TO NP, p% STLI45D DFImT PER PAP= MALAY PCP= ROAD B lE S AGAINRY Lea °way. 17700/ 41, ROUGHLY ROPED TO M epnOM Or WARD. . TOE. GPTO IO mmI KM. PER ATR DWI OAvla o OR OTIrn5 TALLE ONRAREOO STORE FRL S. TOILAL NW COL l wAND .ROiRDwmu. POSESS WATER TIE FOR EIRE DEFT FEP EETEATUDa ABILITY OF NATIVE MOPE/ TO OE ROMEO EV PWwER Of ENO TOE Rem PE amVER3®P RAP nOAT OONmn BMgauS STEEL REB(d® PCILYETIOIENE PLATE RFJNFORCED CONCRETE COLLAR T OTSE CURET to www FINAL TREAT PC NT ELEVATION VIEW URBANGREEN' PPE PPE CONVECTCP0 OF BARREL EnS RAY BE EVE/® VTR WELLEB 1VRW OvtmmOw TO EIAEAECOI W My FLOAT CONTROL OPTION 2 OPTION 1 WEEqunT PR FROU METRaTialli STORAGE AVAILABILITY PER DIAMETER du.EtEn AvwSEE AVAtACE STORAGERnlml STORAGE PER IF. It F'Iml) STORAGE PER L.F. O11 103 10 ;GY/'U31.11.150 1310 /la 1.211,01 MRSS RISE OW PRO CURET TO PRTEAVWNE «i %'X" ..11 POW I/maE PILE' ISOMETRIC VIEW PERERAL Nam I. Cax7E04 TO mwne ALL wroIue x533 NOTED PnCRMSE 2 FOR GTE SEOWC DRAWINGS WTTI mA.ED STRUCTURE. wbTY NO 5A03SL CCM& REPASS CONTACT YOUR TNTEOA CONSTRUCTION Pg CTS WC REPRESENTATIVE. ...mw.ym.. 3 ALL ELEVATIONS, mason WO LOCATION, Of SEERS MO Mtn awl E YCSRD m THE CHOICER OF Emm. A AOTTOPTAoHEO+o The O. RTEP AINEmnmCTw sEETTAO pail E. MOLTED ATTENDE FORE 50 TO A TICO RC OF PRIOR OEERIL OTmACTo1.aHGWTMAW APO RE SNOWIER - 5 TIE aTEO TAIIACTU® FROM FM wGswnDPPMnmt PINT' S. ACCESS TOPEES TAPE 11.7107118 wE LOWING, PCP .4wl° LAM RCTw n. s. ACCESS COVERS TO ET PASHTO =METERS TDw RAT W s RSTW REILCOvER ENT.EIT(I�WO)IDO A'OQINmm PR uxTASA qo TP�ACSTIAsmm TO nn11R IMiWP W.TPCTO0®PIPPnL OPAL ONOnT PIPE aNWP COVER OEMCS N SRI • OR TFOTATIOT ON TS.TREATAEM MMES. REVERENCE Co0001 PRWTRIATIRIR SYSTEM TNONO mAEO WATACT YOUR LOCAL COOED EPayNTAn.E PPM/ATOP IATEl A MT AwTM THE TO E BEV ORID T 01TRACTOR POM TO BRTALAT41. B. CONTRACTOR TO PROVIDE BRTALL POGROM ALL INLET £501051551P ES. a MLNCTOR TO P 0505 PP STALL 4L DEBo`O ARO AYSAL w.1En AL 0. PRIOR TO PA V ETID'. TIE FOROATW WA1 BE m.TP.CIEG TO A PROW AM TAME GNLE P TIC EvENT MILE=O1 � MARnwLSMALL B REMOVED pSAGA TO MUM MTh AL wTEPALL AS E APPROVED B. TIC ERAEER OF ENO. ONCE THE PTRUPTRPREP MUTTON IS O P LCTE TR MONO RATER./ CAR AS WED. E STONE EMEET MATERIAL WALL E .1310.1.1.0/10 EEl T1M10 PROCTOR DENSITY APO RCMP 54101 PO Wel ro PS'D IUl mmP6n SUCH TUT WOE O PC MORE Mem A TWO Lm OTOEMw OCTAVO. ANY o O AO' T!JAMS AT TIE. OMEOR SAOGEMATERIALSHALLE NPA L SHALL BIE TO ERGO OACKFAIJNO E AWAMLFD PLOW TIC LENOIR O M BARRELS AT RITE DPR RAT: MARCTRENML IMDOR NO E6PsaAEHT O TIC SA EN. THE 1.00.11.11/PPE ORONO MUST BE MAPTA4(D F. ROTA TO INSTALLATION OMR FOR TtMwIwCAN01RWTVP0.w0 am»E2. FESOwenm OF no wxmATOR TO mLw. ova mans PL RIFE MACTc]. Al. GENERAL IHSTALLATIONME11.1.XIS AND MATERIALS TO E P ACCORDANCE W11110.511.16:121.. CONTECH' ENGINEETEG S NWJTIONS SICwpm OMars Pans Or be .PF.man Platlm DISTIVTT IT«slto?M URBANGREEN SRPE CISTERN STANDARD DETAIL • • CISTERN DETAILING STORMWATER RUNOFF 23 CREST ROAD EAST ROLLING HILLS, CA 90274 013315_HynesWAA\C.50p Plan 2016_G.Gwg 7/0/2010 2:29:02 PM JAMES P. HYNES LIVING TRUST 4142 MARITIME ROAD RANCHO PALOS VERDES. CA 90274 B_ Bolton Engine ring Corp. ram 1 nit 25834 Narbonne Avenue Ste. 210 sat moon 1.0003. Ca. 90717 ■i1 Rot: (310)325-5580 m v Fa01T0)3D:al A.N I of Hydrology 8 H) draulics: 25 Year Storm Undeveloped Lot Proposed Development Notes Lot Area (e0 307,314 307.314 Analyze Entire Site Lot Area (acres) 7.055 7.055 - Developed Area Watershed (s.l.) 307.314 307.314 Analyze Entire Site Developed Area Watershed (acres) 7.0550 7.0550 - Structures (al) 0 19,074 - Hardscape(ef) 6,030 24,130 a Portion of Crest Road on Property Total Structural t Hlydscape 8003 43.204 Impervious (%) 1.95% 14.06% Fbw Path (4) 950 . - 1220 Longest few path for runoff to reach convergence point of Wm canyon streams below propel site. Change in Elevation (ft) -245 245 Slope (%) . 25.79% - 20.08% Cu 0.8499 0.8383 Undeveloped Runoff Coeffeclent Cd 0.8509 ' 0.8470 Devehpod Runoff Coefecieent Tc(mi) 7 9 Time of Concentration Flow Rate (cis) 13.42 11.87 Vo4ume(83) 38,708 44,552 Icrease in flow path length = decrease in slope and flow rate Increase in Flow Rate (cfs) -1 55 decrease in WWme (f0) 7.844 - STORAGETANKNEEDSTO STOREAMINIMUMOF 7,844 FT3 OF RUNOFF - 56,673 GAL OF RUNOFF - CONTECH URBANGREEN SRPE CISTERN SIZING Option 1 PIPE DWNETER (9y LENGTH OF PIPE (FT) NUMBER OF PIPES AVALIABLE STORAGE PER L.F. (GAIJLF) PROVIDED STORAGE CAPACITY (GAL) 120 5B 2 569.87 65.989 CHECK: 65,989 4 58.673 OK CONTECH URBANGREEN SRPE CISTERN SIZNG Option 2 PIPE DIAMETER (IN) LENGTH OF PIPE (FT) NUMBER OF PIPES AVALIABLE STORAGE PER L.F. (GAL/LF) PROVIDED STORAGE CAPACITY (GAL) 84 5B 4 278.74 84,668 CHECK: 64,668 < 158.673 OK Rain Event Storm (Year) Undeveloped Developed Pre vs Post %of 0 tern Felled R On y Storing Difference in Pre Vs. Poo Unleme 160f Volume (Difference of Pre vs Post) Stored by rletamc Additional Volume Stored (Above Difference In Pre vs Post) Cubic Feet Flow Rate (cfs) 24 Hr Volume (ft3) Flow Rate (cfs) 24 Hr Volume (ft3) Flow Rate (ds) 24 Hr Volume (ft3) 1 1.6 6,139 1.5583 9,350 -0.0417 3,211 36.40% 100% 5,611 2 3.01 9,675 2.8384 13,917 -0.1716 4,242 48.08% 100% 4,580 5 6.47 18,486 6 24,424 -0.47 5,938 67.31% 100% 2,884 30 9.202 25,769 8.377 32,653 -0.825 6,884 78.03% 100% 1,938 25 13.42 36,708 11.87 44,552 -155 7,844 88.91% 100% 978 50 15.53 46,111 14.56 54,525 -0.97 8,414 95.37% 100% 408 100 19.2 56,642 16.546 65,456 -2.654 8,814 99.91% 100% 8 500 26.84 82,959 24.466 92,492 -2.374 9,533 108.06% 92.54% 0 CALCULATION SUMMARY STORMWATER RUNOFF 23 CREST ROAD EAST ROLLING HILLS, CA 90274 JAMES P. HYNES LIVING TRUST 4147 MARITIME ROAD RANCHO PALOS VERDES, CA 90274 B Bolton Engineering Corp. 25334 wmPme Moue Se. 210 I TIa. Ca. 90717 ■i1— Rule (310) 325-5580 v Ft;D49i masa% kelt IliaV TIM 11311. :113315_HyneaidwgICSile Phn_201fi G.dwg 71370162:29:03 PM • • Title: UN —DEVELOPED 25 YEAR CALCULATION SUMMARY 23 CREST ROAD EAST ROLLING HILLS, CA 90274 Peak Flow Hydrologic Analysis File location: J:/13315_Hynes/Documents/Hydrology_Entire Site/23 Crest Road East - Un-Developed_25 Year_w road.pdf Version: HydroCalc 0.3.1 -beta Input Parameters Project Name Subarea ID Area (ac) Flow Path Length (ft) Flow Path Slope (vft/hft) 50-yr Rainfall Depth (in) Percent Impervious Soil Type Design Storm Frequency Fire Factor LID 23 Crest Road East Un-Developed_25 Year 7.055 950.0 0.2579 5.0 0.0195 2 25-yr 0 False Output Results Modeled (25-yr) Rainfall Depth (in) Peak Intensity (in/hr) Undeveloped Runoff Coefficient (Cu) Developed Runoff Coefficient (Cd) Time of Concentration (min) Clear Peak Flow Rate (cfs) Burned Peak Flow Rate (cfs) 24 -Hr Clear Runoff Volume (ac -ft) 24 -Hr Clear Runoff Volume (cu -ft) 4.39 2.2361 0.8499 0.8509 7.0 13.4229 13.4229 0.8427 36707.9728 14 12 • 10 - 0 - ai 6 4- 2 0 Hydrograph (23 Crest Road East: Un-Developed_25 Year) 200 400 600 800 1000 Time (minutes) 1200 1400 1600 Client: JAMES P. HYNES LIVING TRUST 11lie 4147 MARITIME ROAD RANCHO PALOS VERDES, CA 90274 J: \13315J4ynes\dwg\C—Site Plan_2016_G.dwg 7/8/2016 2: 29:13 PM Bolton Engineering Corp. 25834 Narbonne Avenue Ste. 21C Lomita, Co. 90717 Phone: (310) 325-5580 Fax: (310) 325-5581 Dale:July 6. 3016 Sale: AS SHOWN Oman: TN911 Jed 13315 Shed 1 OF1 Peak Flow Hydrologic Analysis File location: J:/13315 Hynes/Documents/Hydrology_Entire Site/23 Crest Road East - Developed, 25 Year_w road.pol Version: HydroCalc 0.3.1 -beta Title: DEVELOPED 25 YEAR STORM CALCULATIONS 23 CREST ROAD EAST ROLLING HILLS, CA 90274 Input Parameters Project Name Subarea ID Area (ac) Flow Path Length (ft) Flow Path Slope (vft/hft) 50-yr Rainfall Depth (in) Percent Impervious Soil Type Design Storm Frequency Fire Factor LID 23 Crest Road East Developed_25 Year 7.055 1220.0 0.2008 5.0 0.1406 2 25-yr 0 False Output Results Modeled (25-yr) Rainfall Depth (in) Peak Intensity (in/hr) Undeveloped Runoff Coefficient (Cu) Developed Runoff Coefficient (Cd) Time of Concentration (min) Clear Peak Flow Rate (cfs) Burned Peak Flow Rate (cfs) 24 -Hr Clear Runoff Volume (ac -ft) 24 -Hr Clear Runoff Volume (cu -ft) 4.39 1.987 0.8383 0.847 9.0 11.8728 11.8728 1.0228 44551.967 12 Hydrograph (23 Crest Road East: Developed_25 Year) to 8 4 2 0 0 200 400 600 800 1000 Time (minutes) 1200 1400 1600 JAMES P. HYNES LIVING TRUST lax 4147 MARITIME ROAD a RANCHO PALOS VERDES, CA 90274 J: \13315J-lynes\dwg\C-Site Plon_2016_G.dwg 7/8/2016 2: 29:08 PM Bolton Engineering Corp. 25834 Narbonne Avenue Ste. 21C Lomita, Co. 90717 Phone: (310) 325-5580 Fax: (310) 325-5581 OYe:July e, 2019 Sale: AS SHOWN Clara TAPI J* 13315 Shea 1 OF I ellen': I,.l.LL11lJVIJ I-111.0 Ia A. 064 • . . , • ✓ 1 2)(1142" - 1 • r- <c»t) • PROJECT SITE SAN PEDRO 1-111.2 \1' v r___— vun X016 `sn'¢'.nD. / 7.2 InuO%w : rTha u.wv1 3 DPA — 6 . 1,111111. POTENT] %I .RI 0 2 hides 25 -YEAR 24-HOCR ISOHYET REDUCTION FACTOR: 0.878 I0-YIAI4 24-111)1:8 !SOO vrr HEIILCr10n FACI'OH: 0.714 TORRANCE 50 —YEAR 24 —FLOUR ISOHYET 1—H 1.4 2 a 4.1 IC 4.4 33' 44' 00" °BLS et) Ua110 WORKS Title: HYDROLOGIC MAP CALCULATION SUMMARY 23 CREST ROAD EAST ROLLING HILLS, CA 90274 CIIen1: JAMES P. HYNES LIVING TRUST 4147 MARITIME ROAD RANCHO PALOS VERDES, CA 90274 J: \13315J-lynes\dwg\C—Site Plan_2016_G.dwg 7/8/2016 2:29:18 PM lis Bolton Engineering Corp 25634 Nabonne Avenue Ste. 21C `..Lomita, Ca. 90717 ttPhone: (310) 325-5580 Fox: (310) 325-5581 Dile:aty & 2018 Sale: AS 9I '*N Daen: Tlwu Jek 13315 Site 1 OF 1 33'45.00" TORRANCIS I-111.4 _'I wgs „ . _:.. `` if, .. . :. --.1. . uus ", : >l ^. v,,t:a-rr.�•'- ., _ 1y\�{ ' oo . - ,::, , '; - {1113 _ ty, \;1 ` { ..,,5.a I>1 ;.' may(y1 am•+ OOP . . - DPA — 6 '7,, ) �.. y % /6 i' 4.6 ' /• .4 ` :'DPA —17, 1i ou4 ., t '147 \ A , /' A• / r /' ' F. , , it103 1 '--- .. 33•.37'30•' 0I wll. I 0 I 2 Mites /�)CI_\9SIFlC\TIUT N .\111:♦ Y•• - �" J. 4 254EAR 24 -HOUR ISOH\ET REDUCTION FACTOR:0E7S 7.2' namUcues''f It uSU 10-1'EA 24-11111.8 ISOIIVET HIin1CI•ION EACITIR: 0.714 a IS J �; SAN PEDRO 1-111.2 PUBLIC WORKS A s f\ DPA — 6 l o;;;=;maL 50 —YEAR 24 —HOUR JSOHYET T❑ HYDROLOGIC MAP Client: JAMES P. HYNES LIVING TRUST Bolton Engineering Corp. oae:My6, 9118 CALCULATION 25834 Narbonne Avenue Ste. 21C °—u.:ASS10AN SUMMARY 4147 MARITIME ROAD Lomita, Ca. 90717 _ Drawn: TIAN 23 CREST ROAD EAST ROWNG HILLS, CA 90274 RANCHO PALOS VERDES, CA 90274 Phone: (310) 325-5580 i ,s Fax: (310) 325-5581 sheet 1 OF I PI \13315)lynes\dwg\C—Site on�2016_G.dwg 7/8/2016 2:29:28 PM S 1.0 0.9 0.8 z W 0.7 U ow 0.6 U 0 0.5 2 re o 0.4 W a O w 0.3 W 0 j 0.2 0.1 0.0 Co = (0.9 ' IMP) + (1.0 - IMP)' Cu Where: Co = Developed Runoff Coefficient IMP = Proportion Impervious Cu = Undeveloped runoff coefficient Los Angeles County Department of Public Works RUNOFF COEFFICIENT CURVE SOIL TYPE NO. 002 Ii I I _ 1 - - t -; _._.. - -. __ __. I _._ .__ . __ .. . _. i ______ I I1 I I I i I ;. . i_ i I I , I 1 I I 00 20 40 60 80 10.0 12.0 14.0 RAINFALL INTENSITY (I) INCHES/HOUR File:Soil Curve Data and Graphs 0-24 Tab:GN2 HYDROLOGY APPENDIX C 16.0 18.0 BJW: 06/14/2004 20.0 n N g a U O (6 2 p O S OE cc W Wcn f J O r PtE as a Co U aQ u -a aK U � H n N o < r U) w¢ is. O ZQ W 0 ui °Fizw gITx O CZ Z J U 3 IX 0 Nix 7/8/2016 2:29:33 PM J: \13315J-lynes\dwg\C—Site Plan.2016_G.dwg 1 Year Storm Storage of Pre Vs. Post 3,211; 36% 5,611; 64% % of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet 2 Year Storm Storage of Pre Vs. Post • % of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume 4,580; 52% 4,242; 48% Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet • 5 Year Storm Storage of Pre Vs. Post 2,884; 33% % of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume • 5,938; 67% Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet 10 Year Storm Storage of Pre Vs. Post 1,938; 22% % of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet 6,884; 78% 25 Year Storm Storage of Pre Vs. Post 978; 11% of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume 7,844; 89% Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet 50 Year Storm Storage of Pre Vse Post 408; 5% % of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet 8,414; 95% 100 Year Storm Storage of Pre Vs. Post 8; 0.09% % of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet 8,814; 99.91% 500 Year Storm 0; o% Storage of Pre Vs. Post % of Cistern Filled if Only Storing Difference in Pre Vs. Post Volume Additional Volume Stored (Above Difference in Pre vs Post) Cubic Feet 9,533; 100% • .a SUMMARY OF HYDROLOGIC DROLOGIC PROCEDURES AND ANALYSIS E AR PROJECTS IN LA COUNTY Date: July 11, 2016 RE E 0 V : ['pared for: Rolling Hills Planning Commission Prepared by: Bolton Engineering JUL 1.1 2016 TNicholson@boltonengineering.com City of Rolling Hills By Contents Introduction 2 Recurrence Intervals 2 Rainfall and Design Storm Characteristics - 3 Rainfall Intensity -Duration -Frequency 3 Rainfall Isohyets 3 Rainfall Losses and Runoff Production 4 Infiltration 4 MODIFIED RATIONAL LOSS CALCULATIONS 4 Undeveloped Runoff Coefficient (Cu) 5 Developed Soil Runoff Coefficient Curves (CD) 5 Burned Soil Runoff Coefficient Curves (Cba) 5 MODIFIED RATIONAL METHOD 6 Time of Concentration 6 BUILDING AND SAFETY DIVISION 6 Hydrology Review Includes: 6 Hydraulics Review Includes: 7 Grading Review Includes: 7 References 7 Appendix A 8 Lectures Notes from Western Washington University Soils & Geology Class 8 1IPage INTRODUCTION In order to provide some basic background on Hydrology and soil characteristics, Bolton Engineering has put together a brief summary of the more relevant items from the current LA County Hydrology Manual (2006), and the United States Geology Survey (USGS) website. We are also including, as an Appendices a set of slides prepared by a Soils & Geology Professor at Western Washington University. Our hope is that the information provided within this document helps to educate the Planning Commission on some of the terminologies and methodologies being discussed with regard to Soil and Geology. All information is taken directly from the Hydrology Manual and USGS website; we have not included any additional narrative within this document. RECURRENCE INTERVALS Recurrence intervals and probabilities of occurrences Recurrence interval, in Probability of occurrence in Percent chance of occurrence in any years any given year given year 100 1 in 100 1 50 1 in 50 2 25 1 in 25 4 10 1 in 10 10 5 1 in 20 2 1 in 50 "Statistical techniques, through a process called frequency analysis, are used to estimate the probability of the occurrence of a given precipitation event. The recurrence interval is based on the probability that the given event will be equaled or exceeded in any given year. For example, assume there is a 1 in 50 chance that 6.60 inches of rain will fall in a certain area in a 24 -hour period during any given year. Thus, a rainfall total of 6.60 inches in a consecutive 24 -hour period is said to have a 50 -year recurrence interval. Likewise, using a frequency analysis (Interagency Advisory Committee on Water Data, 1982) there is a 1 in 100 chance that a streamflow of 15,000 cubic feet per second (ft3/s) will occur during any year at a certain streamflow-measurement site. Thus, a peak flow of 15,000 ft3/s at the site is said to have a 100 -year recurrence interval. Rainfall recurrence intervals are based on both the magnitude and the duration of a rainfall event, whereas streamflow recurrence intervals are based solely on the magnitude of the annual peak flow. Ten or more years of data are required to perform a frequency analysis for the determination of recurrence intervals. Of course, the more years of historical data the better —a hydrologist will have more confidence on an analysis of a river with 30 years of record than one based on 10 years of record. Recurrence intervals for the annual peak streamflow at a given location change if there are significant changes in the flow patterns at that location, possibly caused by an impoundment or diversion of flow. The effects of development (conversion of land from forested or agricultural uses to commercial, residential, or industrial uses) on peak flows is generally much greater for low -recurrence interval floods than for high -recurrence interval floods, such as 25- 50- or 100 -year floods. During these larger floods, the soil is saturated and does not have the capacity to absorb additional rainfall. Under these 2IPage conditions, essentially all of the rain that falls, whether on paved surfaces or on saturated soil, runs off and becomes streamflow." (USGS) "All drainage facilities in developed areas not covered under the Capital Flood protection conditions must meet the Urban Flood level of protection. The Urban Flood is runoff from a 25 -year frequency design storm falling on a saturated watershed. A 25 -year frequency design storm has a probability of 1/25 of being equaled or exceeded in any year." (LA County Hydrology Manual 2006) RAINFALL AND DESIGN STORM CHARACTERISTICS "The Department of Public Works' hydrologic method uses a design storm derived from historic rainfall data. Observed major extratropical storms in the Los Angeles region provided a pattern for the design storm. The storm does not represent an actual event but is an idealized series of precipitation data that fits a specific design objective. The design storm is a composite determined by analysis of regional rainfall patterns. Three components define the design storm: an Intensity -Duration -Frequency (IDF) equation, a temporal distribution, and a spatial rainfall distribution. Public Works developed the rainfall distribution and design storms in 2002. A network of approximately 250 rain gages allowed an accurate definition of the spatial and temporal variability of rainfall over the county. The average historic record length for these gages is 75 years Data analysis provided the three components needed for the design storm. Analysis of rainfall data within the county provided the IDF equation, which is a relationship between rainfall intensity, duration, and frequency. Then a 24 -hour temporal distribution was established using the IDF relationship. The 24 - hour temporal distribution is represented by the unit hyetograph, which plots rainfall intensity versus time. Finally, a set of isohyets was established for the county. The isohyets represent rainfall depths for a specific duration and frequency and are applied to the unit hyetograph. The result is a hyetograph for a given location and recurrence interval, which is the design storm for a specific subarea." (LA County Hydrology Manual 2006) RAINFALL INTENSITY -DURATION -FREQUENCY "The fundamental unit of rainfall is depth. Rain gages directly measure depth. Measuring depth and time provides intensity. Intensity is the amount of rain that has fallen per unit of time. The average intensity is calculated by dividing a rainfall depth by the duration, the time over which the rainfall accumulated. The average intensity is: Rain Depth Intensity = Duration The peak intensity produces the largest runoff rate. If rainfall were constant throughout a storm, any duration less than the storm duration would produce the same intensity. However, rainfall is rarely constant for the storm duration and intensity varies." (LA County Hydrology Manual 2006) RAINFALL ISOHYETS "Historical data indicates that spatial distribution of precipitation across the county is not uniform during storm events. To account for this spatial variability of rainfall, Public Works developed rainfall isohyetal maps for the County of Los Angeles. Isohyetal maps show the 24 -hour rainfall depths expected for the 50 -year storm frequency. The rainfall pattern depicted on these maps shows the influence of topography on rainfall. The isohyetal maps incorporate information from Public Works' rain gages and the National Oceanic and Atmospheric Administration's (NOAA) gridded rainfall maps of the area. The process used NOAA's Atlas 3(Page 2, 2 -year, 24 -hour isohyetal data to provide the spatial rainfall pattern. NOAA is a widely accepted source for meteorological data, and NOAA At/as 2 is a recognized standard for spatial rainfall distribution data." (LA County Hydrology Manual 2006) RAINFALL LOSSES AND RUNOFF PRODUCTION "Rainfall becomes runoff when all loss processes are satisfied. Runoff results from rainfall not lost to infiltration, interception, depression storage, and evaporation. "Infiltration is the process of water penetrating the ground surface into the soil."i Interception loss occurs when water is retained on vegetation and other surfaces. Intercepted water may evaporate or infiltrate. Loss due to depression storage occurs when water accumulates in depressions of all sizes that are not connected to a flow path. Evapotranspiration, a dominant force in the hydrologic cycle, proceeds slowly during a storm. Different methods have been developed to model rainfall losses. These include runoff coefficients, constant loss parameters, the Horton method, exponential loss calculations, and Green-Ampt losses. The Modified Rational Method uses runoff coefficients. The following sections discuss infiltration and loss methods used within the County of Los Angeles." (LA County Hydrology Manual 2006) INFILTRATION "Infiltration losses have the greatest effect on surface runoff. The rate of infiltration is a function of the state of the soil and is highly heterogeneous over space and time. Hydraulic conductivity is a measure of the ease with which water can travel through the soil and is a measure of the infiltration rate when the soil is saturated. Similar soils generally have similar hydraulic conductivities. However, the infiltration rate is also affected by the degree of soil saturation. Dry soil allows more infiltration than wet soil. Factors such as ground cover or recent fires within the watershed affect the soil surface and infiltration rates. Public Works' hydrologic standards assume that watersheds subject to design rainfall are at a field capacity soil moisture condition. This condition is also referred to as a saturated condition. At field capacity, the forces due to gravity and the surface tension on a drop of water in the soil column are in balance. At this point, no water is draining from the soil. Adding water to the soil forces downward movement and allows infiltration to begin." (LA County Hydrology Manual 2006) MODIFIED RATIONAL LOSS CALCULATIONS "The modified rational method (MODRAT) uses a runoff coefficient that is a function of the rainfall intensity. The runoff coefficient reflects the fraction of rainfall that does not infiltrate and is based on the rainfall intensity for a given time period. The Modified Rational Method uses the following equation at each time step: Q=C`I*A Where: Q = Volumetric flow rate in cfs C = Runoff coefficient, dimensionless I = Rainfall intensity at a given point in time in in/hr A = Watershed area in acres The following sections describe development of the unburned soil runoff coefficient, Cu, the developed soil runoff coefficient, CD, and the burned soil runoff coefficient, Cba. The appropriate coefficient represents runoff for different watershed conditions." (LA County Hydrology Manual 2006) 4IPage UNDEVELOPED RUNOFF COEFFICIENT (Cu) "MODRAT uses runoff coefficient curves to model the runoff response of the soil to changing intensity. The 179 undeveloped runoff coefficient curves, plotted in Appendix C, correspond to different soil types within the County of Los Angeles. A series of runoff coefficient -intensity pairs compose each runoff coefficient curve. Each of the curves has a minimum coefficient (Cu) of 0.1 indicating that there is some runoff even at the smallest rainfall intensities. Appendix C contains the runoff coefficient curves for all the soils within the County of Los Angeles. MODRAT requires assigning a single soil type for each subarea modeled. If a subarea contains more than one soil type, the predominant soil type in the subarea is used." (LA County Hydrology Manual 2006) DEVELOPED SOIL RUNOFF COEFFICIENT CURVES (CD) "Each undeveloped runoff coefficient curve represents natural soil conditions. When precipitation occurs over a developed watershed, the rain falls on directly connected impervious areas and pervious areas. Runoff from pervious areas only occurs during heavy rainfall. Directly connected impervious area always produces direct runoff. As impervious area increases, the amount of direct runoff increases. The runoff coefficient curve must be modified to match the developed condition. Equation 6.3.2 accounts for the effects of development based on the undeveloped runoff coefficient and the amount of impervious area. Cd = (0.9 * IMP) + (1— IMP) *Cu (Equation 6.3.2) Where: Cd = Developed area runoff coefficient IMP = Percent impervious Cu = Undeveloped area runoff coefficient The 0.9 in the equation represents the general assumption that no development is completely impervious. This assumption also accounts for initial abstraction losses in developed areas. Imperviousness is assigned based on the land use types present in a subarea. Land use information requires existing and/or planned development patterns. If more than one type of development is present within a subarea, a composite impervious value must be determined using an area -weighted average. Representative proportion impervious values have been developed by measuring sample areas for each land use type. Appendix D has a table of these values. For undeveloped rural areas, 1% of the area is assumed impervious." (LA County Hydrology Manual 2006) BURNED SOIL RUNOFF COEFFICIENT CURVES (Cm) "Wildfires frequently burn undeveloped watersheds within the County of Los Angeles. Infiltrometer tests conducted in burned chaparral -covered mountain watersheds indicate that these watersheds suffer from a decreased infiltration rate after a fire. The decrease results from calcification caused by intense heat, plugging of the soil pores by ash or other fines, and other chemical reactions that produce a hydrophobic condition. A lack of surface cover also promotes the formation of a crust of fine soil due to the impact of raindrops. This crust further impedes infiltration. Burned area runoff calculations use a runoff coefficient curve adjusted for the burned watershed condition. For burned watersheds, the rational equation becomes Qw= CbolA, in which Qb.and Cm are respectively the peak runoff from a burned area and the statistically adjusted burned soil runoff coefficient. The burned runoff coefficient is adjusted using a fire factor. The fire factor is an index between the natural and completely burned watershed conditions, which ranges from 0 to 1 5IPage respectively. An analysis of historic fires in the major watersheds within the County of Los Angeles provided design fire factors for undeveloped watersheds. Fires increase runoff and debris production. Higher runoff rates entrain more debris and burned watersheds have more debris available for entrainment. Peak flows from burned watersheds are "bulked" to account for volume changes caused by debris entrainment. Debris basins remove the sediment so that downstream flows are equal to flows from burned watershed. For more information on debris production, bulking flows, sediment transport, and design of debris retaining structures and basins, see the Department of Public Works Sedimentation Manual." (LA County Hydrology Manual 2006) MODIFIED RATIONAL METHOD "The modified rational method (MODRAT) uses a design storm and a time of concentration to calculate runoff at different times throughout the storm. Section 5.2 describes the temporal distribution of the design storm. Section 5.3 describes the spatial distribution of design storm rainfall within the County of Los Angeles. Calculating flows based on the rainfall distribution results in a runoff hydrograph. The volume of runoff equals the area under the hydrograph curve. MODRAT allows users to route hydrographs generated in each subarea through conveyances and combine hydrographs based on time. MODRAT produces peak flows equal to or lower than flows calculated using the rational method. The reduction in peak results from attenuation, channel storage, and combining flows that peak at different times." (LA County Hydrology Manual 2006) TIME OF CONCENTRATION "The time of concentration (Tc) is the time it takes for rain in the most hydrologically remote part of the watershed to reach the outlet. Using a rainfall duration equal to the Tcensures that the runoff from the entire subarea is contributing flow at the outlet. MODRAT requires a time of concentration in order to calculate intensities for use with the rational equation." (LA County Hydrology Manual 2006) BUILDING AND SAFETY DIVISION "The primary function of Building & Safety is the enforcement of Los Angeles County Building, Plumbing, Mechanical, and Electrical Codes, as well as other local and State requirements relevant to the construction and occupancy of public and private structures. The Division provides this enforcement through plan checking and inspection of new commercial and residential construction. The County's unincorporated area and 21 contracted cities are served by 25 branch or city inspection offices and a central administrative office. The Drainage and Grading Section provides the following services related to hydrology and hydraulics: HYDROLOGY REVIEW INCLUDES: • Reviewing hydrologic studies for single lot residential and commercial projects based on Public Works' standards. The review identifies flood hazards due to inundation, overflow, or debris, and verifies that the appropriate levels of protection exist against these hazards. • Verifying single lot residential and commercial project compliance with the Department's National Pollution Discharge Elimination System (NPDES) permit, including the enforcement of Standard Urban Stormwater Mitigation Plan (SUSMP) compliance. 61 Page • Verifying that post -development flow rates in watercourses adjacent to the development are no greater than pre -development flow rates. HYDRAULICS REVIEW INCLUDES: • Reviewing proposed drainage facilities and storm drains for capacity, appropriate levels of protection, and negative impacts on existing drainage systems. • Checking pre- and post -development flows, velocities, and flow areas at the upstream and downstream of proposed single lot residential and commercial projects to verify that no negative impacts, including diversions, are created. • Enforcing compliance with the National Flood Insurance Program (NFIP), including FEMA and County floodplain and floodway regulations. • Reviewing hydraulic models of floodway and flood plain encroachments to determine development requirements and effects to upstream and downstream properties. GRADING REVIEW INCLUDES: • Verifying that grading plans for single lot residential and commercial projects do not affect off -site areas negatively in terms of hydrology or debris production. • Verifying compliance with the Department's NPDES permit by reviewing grading plans and inspecting the installation of required BMP's." (LA County Hydrology Manual 2006) REFERENCES Wolfe, Donald L., Chris Conicle, and Janelle Moyer. Los Angeles County Department of Public Works: Hydrology Manual. Alhambra: Los Angeles County Dept. of Public Works, 2006. Print. "Floods: Recurrence Intervals and 100 -year Floods (USGS)." Floods: Recurrence Intervals and 100 -year Floods. N.p., n.d. Web. 8 July 2016. 7IPage Appendix A LECTURES NOTES FROM WESTERN WASHINGTON UNIVERSITY SOILS & GEOLOGY CLASS Wage • • Hydrology is the science that examines the occurrence and movement of atmospheric, surface, and groundwater. A Watershed is the area of land that drains to a single outlet and is separated from other watersheds by a topographic divide. Also known as a catchment, river basin, or drainage basin Soil is an un isolidated aggregate of feral and rock fragments ranging in size from clay, silt, sand, to gravel. Some soils (near surface) also contain organic matter. Soil type (or classification) is determined by fragment (clast) size and distribution of clast sizes. GRAVEL mm 1 I 0 1 inches RELATIVE SIZES SAND 3 SILT 2 4 CLAY t invsble at this scale I I 1 5 0 2/16 3 116 Soil classification can get more descri1ve, but for hydrology purposes we use clast size. R«E O. Hanson a composed mostly n ly of organic monnb_nludng decompos do- d.cis oupe ugkecnol, ys, en.. TAG cob, of she horizon oftend f b no bbd A. Monroe a Compared of both miner& end aguna mole -flab the color a often lam bbd Is bewn touching defined as the process of dasol.mg wosl.ng at dromeg faith mo4Nah by po.celolion cl greundanm. or oAn Imu.ds, occurs .n the A tw..ran and 'sans day and other inward such o: bah and coki..m to the g horizon E. Ho..zon is cunposed J 1glncolad mmn.oIs.esJt.y from 4nchug of dtoy cccium, mognepua, ond bon to bear hairpin The A end E horaan. together canseWe the zone of teacb.ng B. rlaizon a ranched m cloy, bon antes, u,co. carbonate, et other morefcol leached hors a lung horizons Honors is I new.. as t.. zone of occumulntw C. hm iron 'Scampoa.d of partially (Aped Iwecenmedl omens material, foci Is shone bee bar Ae .noerld (nod eke be olMbl in nappy.. such as finer grovels in pet enwranmnms The Ita.uen may be stained red web eon andel f R. Uwast etd lunacered) pores malarial t /Cone of bathing Zone el occemulebn"t 444 y^1 ‘ t H Cu • • Percolation rate controls the infiltration rate infiltration percolation When the rainfall rate exceeds the infiltration rate, surface ponding and runoff occurs othing came out groundwater recharge Infiltration (and runoff) is controlled by soil type, thickness, original water content, and precipitation characteristics runoff sandy soils allow water to infiltrate Moist soils produce more runoff than dry soils silt and clay soils have slow infiltration rates, hence more surface runoff The degree of infiltration and runoff depends on the soil type sands have high infiltration rates il 60/ Clp) '�.A n0 .1 --'--, '!'Sayda a,n ,� F --_—t caw ;Qom* .•‘• 6.m, :Im \ 70 30 j Sand day \ \Imm \ / Icon / 23,/ .. .-4. / ,� /� sordyiom \\ ,�,P ! 5o torn \c0 1`t. � .. i.omm'. .c. Sib 6C 1pd `.O tlI) >p n0 w Jr 30 TO Sand (vresnq Caryrgntl Vtae Peaxn NmMO 14'.1n:. :0 USDA Soil Texture Classification silts have low infiltration rates determine the amount of infiltration versus runoff Soil storage is the amount of water the soil can hold. It is controlled by the soil type, thickness, and porosity. r Porosity is a measure of void space in a soil Grain -size distribution controls the magnitude of porosity uniform grain sizes porosity = 40% mixture of grain sizes porosity = 25% Hydrograph attenuated response silt and clay soils Q Time Hydrograph rapid " high peak" response Time Time Impervious surfaces in urban settings don't allow any infiltration, hence very rapid surface runoff Time Psc,'r' u;;-•e,�i,'r ,,s�'`rr? ' ^r1.�p�'F.s�rr�Ya `S'4'l ye+e .. Hydrograph very rapid "high peak" response I thick, dry soils can store a lot of rain, hence produce less runoff (if they are dry to begin with) Q Hydrograph \ Time thin soils saturate quicker, hence produce more runoff Hydrograph Q Time soils near saturation produce more runoff Hydrograph Q ger, al Raga, qda INCORPORATED JANUARY 24, 1957 TO: FROM: APPLICATION NO. SITE LOCATION: ZONING AND SIZE: APPLICANT: REPRESENTATIVE: NOTICE PUBLISHED: NO. 2 PORTUGUESE BEND ROAD ROLLING HILLS, CA 90274 (310) 377-1521 FAX (310) 377-7288 Agenda Item: 7-C Mtg. Date: 7/19/16 HONORABLE CHAIRMAN AND MEMBERS OF THE PLANNING COMMISSION YOLANTA SCHWARTZ, PLANNING DIRECTOR WENDY STARKS, AICP, ASSOCIATE PLANNER ZONING CASE NO. 904 34 SADDLEBACK ROAD (Lot 13-RH) RAS-1 - 2.71 ACRES (EXCL. ROAD EASEMENT) MS. DELGADO RUSS BARTO, ARCHITECT MAY 5, 2016 JULY 7, 2016 REQUEST AND RECOMMENDATION 1. The Planning Commission visited the property in the morning of July 19, 2016. The Planning Commission at their June 21, 2016 field visit and at their evening meeting expressed concerns regarding the location of the proposed stable and in particular the need for a variance for the proximity of the stable (covered porch) to the existing guest house. The Planning Commission suggested that the project be revised to eliminate the variance request and consider providing a more open area for the equestrian facilities. They also suggested that the applicant consider placing the riding ring in the front of the property. 2. The applicant, Ms. Delgado, revised the project and is requesting a Site Plan Review, a Conditional Use Permit and Variances for a 1,140 square foot single story stable with 1,032 square feet of covered porches with 1,950 square foot adjacent corral, and 5,500 square feet riding ring, 400 cubic yards of grading for the ring, to encroach with the riding ring into the front setback by 2,150 square feet, and to exceed the already non -conforming disturbance of the net lot area to 68.8% (max. permitted disturbance is 40% and existing is at 63.3%). ZC NO. 904 O 3. It is recommended that the Planning Commission continue the hearing from the field trip and provide direction to staff. BACKGROUND 4. The property is zoned RAS-1 and the gross lot area is 2.71 acres. The net lot area is 2.32 acres or 101,040 square feet. The property is currently developed with a 3,420 square foot residence, a 640 square foot garage, a 780 square foot swimming pool/spa, 50 square foot pool equipment, 663 square foot guest house, 510 square feet of attached covered porches, 600 square feet of sheds (a 500 square foot storage shed and a 100 square foot shed), and a 350 square foot service yard. A 959 square foot addition to the residence and a 35 square foot barbecue were approved administratively in October, 2015. With the addition, the residence will be 4,379 square feet. All existing structures are legal and permitted. 5. In 1989 a Conditional Use Permit was granted to convert the then existing stable into a guest house (Resolution 89-30) and area was set aside for the stable at that time adjacent to the 6,200 square foot riding ring that exists today. The existing 500 sq.ft. storage shed was approved and permitted in 1969 as a detached garage. MUNICIPAL CODE COMPLIANCE 6. This proposal is subject to the stable ordinance, adopted in 2011 which requires that all new stables over 200 sq. ft. and corrals/riding rings over 550 sq. ft. require a Conditional Use Permit and are subject to the requirements of Chapter 17.18 of the Zoning Ordinance. The proposed stable will be 1,140 square feet at a maximum height of 15' to the ridgeline. The stable structure is proposed to be located where the riding ring currently is. The floor plan provides for 3 horse stalls, a feed room, muck room and a 300 square foot tack room. 1,032 square feet of covered porches will extend from the stable. Access to the stable will be provided from the existing driveway through a pathway, which will have a D.G. surface. The stable structure will be located 40' from the guesthouse (as measured from the edge of the guesthouse porch to the edge of the stable structure). The stable structure will be developed with 73.7% agricultural uses and a 300 sq.ft. or 26.3% tack room. The 5,500 square foot riding ring is proposed to be located in the front of the lot and encroach into the front setback by 2,150 square feet, thus the variance requests. ZC NO. 904 O 7. Pursuant to the zoning code requirements, the following is applicable to this request: REQUIREMENTS PROPOSED Stable access -way minimum 6' wide with roughened surface A short 6'wide minimum access -way exists joining existing driveway and will be lengthened to the stable. Stable, corral, riding ring not to be located on slopes greater than 4:1 Grading includes 400 c.y. total (200 c.y. cut and 200 c.y. fill for the riding ring). Stable, corral, riding ring - not in front yard; min. 35 ' from side prop line; may be located up to 25' in rear setback. Riding ring requires a variance for front setback encroachment. Stable is towards tha rear of the property and not in any setbacks Stable, riding ring, turnout min. 35' from any residential structure Distances from nearest residential structure (guest house): Stable 40'; Riding ring: 75' to the residence) Stable building to be designed for rural and agricultural uses only, but may include storage for vehicles, household items Stable is proposed to be for horse keeping and associated uses. Stable size to include the entire footprint including loft, if any 1,140 square foot stable is comprised of 3 horse stalls, tack room, muck room, and a feed room. Stable minimum of 60% s all be maintained for agricultural uses Agricultural spaces, incl. stalls, muck room, and feed room comprise 73.7% Stable maximum of 40% not to exceed 800 s.f. may be maintained for a tack room use Tack use area comprises 300 square feet or 26.3%. Stable tack area may have sanitary and kitchen amenities It will be a condition of approval that the stable may have one sanitary facility and a kitchenette. However, neither is being proposed at this time. Stable tack area may have glazed openings Allowed, but not shown currently Stable agricultural space entry doors to be min. 4'wide & 8' high; appearance of a stable door Entry doors conforming with the code; will be a condition of approval. Stable loft permitted No loft is proposed. Stable loft plate height may not exceed 7' No loft is proposed. Stable exterior area may not be paved Dirt or D.G. (condition of approval) Corral minimum 550 sf.; fenced and contiguous to stable. (Planning Commission may determine the size of a corral) 1,950 sq.ft. corral & 5,500 sq.ft. riding ring Stable access slope not to exceed 25% Compliant stable access is existing. Commercial uses or sleeping is not allowed Applicant is not proposing any commercial uses or sleeping in the stable The applicant will be required to comply with all other requirements of Chapter 17.18 of the Zoning Ordinance pertaining to stables, and riding rings as well as to all other regulations including, but not be limited to undergrounding of utility lines to the structure, lighting, roof material, Fire Department requirements and others. ZC NO. 904 8. Grading in the amount of 400 cubic yard (200 c.y. cut and 200 c.y. fill) is proposed, for the riding ring. 9. Currently the lot is disturbed at 63.3%, which is legal non -conforming. Additional disturbance is required for the riding ring, for a total disturbance of the net lot area of 68.8%, requiring a variance. 10. There are two building pads on the property (not in setbacks): one for or the existing home (28,000 square feet) and the other for the proposed stable (11,640 square feet). The residential building pad coverage will remain at 28.6%, and the proposed stable pad coverage will be 18.7%. 11. The structural lot coverage is proposed at 10,179 sf. or 10.07% of the net lot area, (20% permitted); and the total lot coverage including the structures and paved areas is proposed to be 23,599 square feet, or 23.4%, (35% permitted). 12. The following table lists stables /sizes approved since 2011. Location Square Feet / No. of Stories 11 Blackwater Cyn. Rd. 890 sq. ft. one story 5 Buggy Whip 890 sq. ft. one story 0 Chestnut 900 sq. ft. one story 9 Chuckwagon Rd. 1,296 sq. ft. first floor / 792 sq. ft. loft 2,088 sq.ft. total 10 Crest Rd. W. 735 sq. ft. first floor / 453 sq. ft. loft 1,188 sq.ft. total 49 Eastfield 600 sq. ft. one story 12 Johns Cyn. Rd. 735 sq. ft. one story 3 Meadowlark 480 sf. first floor / 360 sf. loft 840 sq.ft. total 29 Middleridge Rd. S. 2,160 sq. ft. first floor / 800 sf. loft with center aisle; 2,960 sq.ft. total 6 Portuguese Bend Rd. 450 sq. ft. one story 77 Crest Rd. E 3,456 sq. ft. first floor/ 235 sq.ft. loft with center isle; 3,691 sq.ft. total 1 Pine Tree Lane 2,976 sq. ft. one story 11 Saddleback 2,415 sq. ft. with 625 sq. ft. loft with center isle; 3,040 sq.ft. total 5 Pine Tree Lane 1,810 sq. ft. with 611 sq. ft. loft; 2,421 sq.ft total 23 Crest Rd. E. Proposed: 1,300 sq.ft. first story; 782 sq.ft. loft 34 Saddleback Rd. Proposed 1,140 sq.ft. - one story 13. When reviewing a stable development application the Planning Commission should consider whether the proposed pro� ect meets the criteria for a Conditional Use ZC NO. 904 4 Permit, Site Plan Review and Variance and Chapter 17.18 of the Zoning Code pertaining to stable requirements and must find that the use is consistent with General Plan policies and goals such as maintenance of the City's rural environment and open space, complies with the specific applicable development standards of the Municipal Code, and also determine that the use, with appropriate conditions, will not adversely affect adjacent or nearby properties. 14. Should this request be approved, the applicant would have to meet all of the conditions of the permitted uses/construction specified in the Zoning Ordinance for stables and corrals as well as all imposed conditions of approval, including maintaining the structure in accordance with the approved floor plan and specified amount and location of agricultural uses. 15. Other required approvals include the RHCA (Architectural Committee), and ultimately Building and Safety plan checking for building permits. At this time, the applicant has not reviewed the project with the RHCA. 16. The project is categorically exempt from the requirements of the California Environmental Quality Act (CEQA Guidelines, Sec.15303). ZONING CASE NO. 904 SITE PLAN REVIEW EXISTING PREVIOUSLY PROPOSED RA -S- 1 ZONE SETBACKS SINGLE FAMILY RESIDENCE, GARAGE, GUEST HOUSE, SERVICE YARD, POOL STABLE, RIDING RING, CORRAL Front: 50 ft. from front easemnt line Sides: 20 ft. from side property line Rear: 50 ft. from rear property line Residence 4379 sq.ft. Residence 4379 sq.ft. Garages Pool/ spa Pool equip. Stable Att. porch Service yard Guesthouse Sheds BBQ 640 sq.ft. 780 sq.ft. 50 sq.ft. 0 sq. ft. 510 sq. ft. 350 sq.ft. 663 sq.ft. 600 sq.ft. 35 sq.ft. Garages Pool/spa Pool equip. Stable Attach. porch Service yard Guesthouse Sheds BBQ 12'6" high 640 sq.ft. 780 sq.ft. 50 sq.ft. 1,140 sq.ft. 1,542 sq.ft. 350 sq.ft. 663 sq.ft. 600 sq.ft. 35 sq ft. TOTAL 8,007 sq.ft. TOTAL 10,179 sq. ft. GRADING N/A 400 cubic yards (200 cy. cut, 200 cy.fill) balanced on -site 200 cy. for new riding ring, & 200 cy. for riding ring Site Plan Review required if excavation and/or fill or combination thereof that is more than 3 feet in depth and covers more than 2,000 sq. ft.). ZC NO. 904 Must be balanced on -site. STRUCTURAL LOT 7.9% 10.07% or 10,179 sf of 101,040 s.f. net lot area COVERAGE (20% maximum) TOTAL LOT COVERAGE 20.3% 23.4% or 23,599 sq.ft. of 101,040 sq.ft. net lot area (35% maximum) BUILDING PAD COVERAGE 28.6% N/A 28.6% of 28,000 sq.ft. pad 18.7% of 11,640 sq.ft. pad (30% maximum -guideline) Residential Stable DISTURBED AREA (40% 63.3% (legal nonconforming) 68.8% (legal nonconforming) maximum; any graded building pad area, any remedial grading (temporary disturbance), any graded slopes and building pad areas, and any non -graded area where impervious surfaces exist.) STABLE (min. 450 SQ.FT. N/A 1,140 sq.ft & 1,950 sq.ft. corral & 550 SQ.FT. CORRAL) STABLE ACCESS Existing Existing RIDING RING (CUP 6,200 5,500 sq. ft. partially in front setback Required) ROADWAY ACCESS Existing driveway approach Existing driveway approach VIEWS N/A Planning Commission review PLANTS AND ANIMALS N/A Planning Commission review SITE PLAN REVIEW CRITERIA 17.46.010 Purpose. The site plan review process is established to provide discretionary review of certain development projects in the City for the purposes of ensuring that the proposed project is consistent with the City's General Plan; incorporates environmentally and aesthetically sensitive grading practices; preserves existing mature vegetation; is compatible and consistent with the scale, massing and development pattern in the immediate project vicinity; and otherwise preserves and protects the health, safety and welfare of the citizens of Rolling Hills. 1146.050 Required findings. A. The Commission shall be required to make findings in acting to approve, conditionally approve, or deny a site plan review application. B. No project which requires site plan review approval shall be approved by the Commission, or by the City Council on appeal, unless the following findings can be made: 1. The project complies with and is consistent with the goals and policies of the general plan and all requirements of the zoning ordinance; ZC NO. 904 0 2. The project substantially preserves the natural and undeveloped state of the lot by minimizing building coverage. Lot coverage requirements are regarded as maximums, and the actual amount of lot coverage permitted depends upon the existing buildable area of the lot; 3. The project is harmonious in scale and mass with the site, the natural terrain and surrounding residences; 4. The project preserves and integrates into the site design, to the greatest extent possible, existing topographic features of the site, including surrounding native vegetation, mature trees, drainage courses and land forms (such as hillsides and knolls); 5. Grading has been designed to follow natural contours of the site and to minimize the amount of grading required to create the building area; 6. Grading will not modify existing drainage channels nor redirect drainage flow, unless such flow is redirected into an existing drainage course; 7. The project preserves surrounding native vegetation and mature trees and supplements these elements with drought -tolerant landscaping which is compatible with and enhances the rural character of the community, and landscaping provides a buffer or transition area between private and public areas; 8. The project is sensitive and not detrimental to the convenient and safe movement of pedestrians and vehicles; and 9. The project conforms to the requirements of the California Environmental Quality Act. CRITERIA FOR APPROVAL OF CONDITIONAL USE PERMIT: 17.42.050 Basis for approval or denial of conditional use permit. The Commission (and Council on appeal), in acting to approve a conditional use permit application, may impose conditions as are reasonably necessary to ensure the project is consistent with the General Plan, compatible with surrounding land use, and meets the provisions and intent of this title. In making such a determination, the hearing body shall find that the proposed use is in general accord with the following principles and standards: A. That the proposed conditional use is consistent with the General Plan; B. That the nature, condition and development of adjacent uses, buildings and structures have been considered, and that the use will not adversely affect or be materially detrimental to these adjacent uses, building or structures; C. That the site for the proposed conditional use is of adequate size and shape to accommodate the use and buildings proposed; D. That the proposed conditional use complies with all applicable development standards of the zone district; E. That the proposed use is consistent with the portions of the Los Angeles County Hazardous Waste Management Plan relating to siting and siting criteria for hazardous waste facilities; F. That the proposed conditional uses observes the spirit and intent of this title. ZC NO. 904 CRITERIA FOR VARIANCES 17.38.050 Required findings. In granting a variance, the Commission (and Council on appeal) must make the following findings: A. That there are exceptional or extraordinary circumstances or conditions applicable to the property that do not apply generally to other properties in the same vicinity and zone; B. That such variance is necessary for the preservation and enjoyment of substantial property rights possessed by other properties in the same vicinity and zone but which is denied the property in question; C. That the granting of such variance will not be materially detrimental to the public welfare or injurious to properties or improvements in the vicinity; D. That in granting the variance, the spirit and intent of this title will be observed; E. That the variance does not grant special privilege to the applicant; F. That the variance is consistent with the portions of the County of Los Angeles Hazardous Waste Management Plan relating to siting and siting criteria for hazardous waste facilities; and G. That the variance request is consistent with the general plan of the City of Rolling Hills. SOURCE: City of Rolling Hills Zoning Ordinance ZC NO. 904